CN104864259A - Truss - Google Patents

Abstract

The invention discloses a truss, which is characterized in that it comprises at least one main beam and at least one side beam; at least one end of the side beam is connected to one of the main beams. The truss in the present invention consists of main girders and side girders. Among them, the main beam makes full use of the ductility and material uniformity of metal materials, the designability and fatigue properties of composite materials, so that the main beam can not only withstand instantaneous impact and long-term high-frequency vibration, but also has good resistance High temperature properties and tensile strength.

Description

truss

technical field

The invention relates to a truss.

Background technique

In marine engineering, bridge engineering, or other fields that have strict requirements on structural weight, there are not only certain weight index requirements for structures, but also higher technical index requirements, such as stiffness, strength, tensile strength, and compressive strength. , Instantaneous impact strength, etc. If the structural components are made of all-metal materials, the structure will not only be bulky but also heavy in order to make the structure meet certain technical index requirements. Taking the truss as an example, if it is an all-metal truss, in order to make it have a higher technical index, it is necessary to increase the size of the truss, thereby increasing the weight of the truss itself and the space it occupies. The spatial arrangement of other components creates difficulties, and also places a heavy weight burden on the entire product, reducing the load-bearing capacity of the structure to carry other objects. On the other hand, trusses made of all-metal materials have poor corrosion resistance and poor resistance to harsh environments.

Contents of the invention

The object of the present invention is to provide a truss in order to overcome the deficiencies in the prior art.

To achieve the above object, the present invention is achieved through the following technical solutions:

The truss is characterized by comprising at least one main beam and at least one side beam; at least one end of the side beam is connected to one of the main beams.

Preferably, the main beam includes at least one first composite material rod; the first composite material rod includes a metal cylinder; the outer surface of the metal cylinder is covered with a first fiber reinforced plastic layer; the metal An insulating coating is provided on the outer surface of the cylinder; the insulating coating is arranged between the outer surface of the metal cylinder and the first fiber-reinforced plastic layer.

Preferably, the first fiber-reinforced plastic layer is formed by winding one or more first fiber-reinforced plastic threads or first fiber-reinforced plastic tapes on the outer surface of the metal cylinder; the plurality of first fiber-reinforced plastic The wire or the first fiber-reinforced plastic tape is wound around the outer surface of the metal cylinder in sequence.

Preferably, a second fiber-reinforced plastic layer is provided on the outer surface of the first fiber-reinforced plastic layer; the second fiber-reinforced plastic layer is a second fiber-reinforced plastic thread or a second fiber-reinforced plastic tape wound around the The outer surface of the first fiber reinforced plastic layer is formed.

Preferably, the first fiber-reinforced plastic layer is a carbon fiber-reinforced plastic layer; the second fiber-reinforced plastic layer is a glass fiber-reinforced plastic layer or a whisker-reinforced plastic layer.

Preferably, the metal cylinder is provided with a first through hole extending in the axial direction.

Preferably, the insulating coating is a resin coating.

Preferably, the outer surface of the metal cylinder is wavy.

Preferably, the end of the first composite material rod is provided with a flange; the first composite material rod is connected to another first composite material rod through the flange.

Preferably, the outer surface of the flange is wavy; the first fiber reinforced plastic layer covers the wavy outer surface of the flange and mechanically engages with the wavy outer surface of the flange.

Preferably, both ends of the first composite material rod are provided with the flange; the outer surface of the flange is provided with a plurality of first protrusions distributed along the circumferential direction; the first fiber reinforced plastic wire Or the first fiber-reinforced plastic belt is wound along the axial direction of the metal cylinder, and sequentially bypasses the first bumps on the flanges at both ends of the metal cylinder, and connects the flanges at both ends of the metal cylinder to the Metal posts are connected and form the first fiber reinforced plastic layer.

Preferably, the side beam includes a support body; at least one first lug is respectively provided at both ends of the support body; and the outer surface of the support body is covered with a third layer of fiber reinforced material.

Preferably, one or two lugs are respectively provided at both ends of the support body; the two lugs located at the same end of the support body are arranged at intervals.

Preferably, the first tab abuts against the support body; a third fiber reinforced material wire or a third fiber reinforced material belt is wound around the support body and the first lug along the axial direction of the support body. The ear piece is heated and solidified to form the third fiber reinforced material layer, and connect the first ear piece to the support body.

Preferably, the outer surface of the third layer of fiber-reinforced material is also covered with a fourth layer of fiber-reinforced material; the fourth fiber-reinforced material wire or the fourth fiber-reinforced material belt is along the circumferential direction and the axial direction of the support body The fourth fiber reinforced material layer is formed by heating and curing after winding the third fiber reinforced material layer.

Preferably, the first tab abuts against the support body; the third fiber reinforced material wire or the third fiber reinforced material belt is wound around the support body and the support body along the circumferential direction and the axial direction of the support body. The first ear piece is heated and solidified to form the third fiber reinforced material layer, and the first ear piece is connected to the support body.

Preferably, the outer surface of the third fiber-reinforced material layer is also coated with a fourth fiber-reinforced material layer; The supporting body is formed by winding the third fiber reinforced material layer in the axial direction and then heating and curing.

Preferably, the first lug is provided with a first groove; when the third fiber reinforced material wire or the third fiber reinforced material strip is wound around the first lug in the axial direction, it is accommodated in the first lug. or the fourth fiber reinforced material wire or the fourth fiber reinforced material strip is accommodated in the first groove when axially wound around the first tab.

Preferably, the first lug is provided with a plurality of second protrusions distributed along the circumferential direction; the third fiber-reinforced material wire or the third fiber-reinforced material strip is wound along the axial direction and passed around in sequence The second lugs on the first lugs at both ends of the support connect the first lugs at both ends of the support to the support; or the fourth fiber reinforced material line or the fourth fiber reinforced The material strip is wound along the axial direction and sequentially passes around the second lugs on the first lugs at both ends of the support body to connect the first lugs at both ends of the support body to the support body.

Preferably, the outer surface of the first ear piece is corrugated; when the third fiber reinforced material thread or the third fiber reinforced material strip is wound around the first ear piece, it will be in contact with the first ear piece The wavy outer surface mechanically snaps together.

Preferably, the side sill further includes a first connecting piece; the first connecting piece includes a matched first protrusion and a first slot; the first protrusion is arranged on the first lug and the first slot. On one of the supporting bodies, the first slot is arranged on the other of the first tab and the supporting body; the first protrusion is pluggably inserted into the first lug. Install the first lug on the end of the supporting body in a slot.

Preferably, the side beam further includes a connecting rod; the two ends of the connecting rod are respectively provided with the first lug; the supporting body is provided with a groove extending in the axial direction; the groove Compatible with the connecting rod; the connecting rod is inserted into the groove, so that the first tab protrudes from the groove and is arranged at the end of the support body.

Preferably, the number of the connecting rods is two; the support body is provided with two grooves; each of the connecting rods is embedded in one of the grooves; The two lugs at the end are spaced apart.

Preferably, the first lug is integrated with the connecting rod; the first lug and the connecting rod are made of metal material, or are made of a fifth fiber-reinforced material that is wound and then heated and cured, or Formed using a resin transfer molding process.

Preferably, the third fiber-reinforced material wire or the third fiber-reinforced material belt is wound around the support body, the connecting rod and the ear pieces along the circumferential direction and the axial direction of the support body, and then heated and cured to form the first Three fiber reinforced material layers are used to connect the connecting rod and the support body.

Preferably, the outer surface of the third fiber-reinforced material layer is also coated with a fourth fiber-reinforced material layer; The supporting body is formed by winding the third fiber reinforced material layer in the axial direction and then heating and curing.

Preferably, the third fiber reinforced material layer is a third fiber reinforced resin layer; the fourth fiber reinforced material layer is a fourth fiber reinforced resin layer; the fifth fiber reinforced material layer is a fifth fiber reinforced resin layer layer; the third fiber-reinforced resin layer includes a third fiber and a third resin; the fourth fiber-reinforced resin layer includes a fourth fiber and a fourth resin; the fifth fiber-reinforced resin layer includes a fifth fiber and a first resin Five resins; the third fiber, the fourth fiber and the fifth fiber are the same or different; the third fiber, the fourth fiber or the fifth fiber is selected from glass fiber, carbon fiber, metal One or more of fiber, boron fiber, asbestos fiber, aramid fiber, orlon fiber, polyester fiber, nylon fiber, vinylon fiber, polypropylene fiber, polyimide fiber, cotton fiber and sisal ; the first resin, the second resin or the third resin is the same or different; the third resin, the fourth resin or the fifth resin is selected from epoxy resin, phenolic resin, vinyl One or more of resins, benzoxazine resins, polyimide resins, and bismaleimide resins.

Preferably, the lugs can be made of either metal materials or composite materials. Composite materials can be metal matrix composites, ceramic matrix composites or polymer matrix composites. The first tab is provided with a second through hole. When the lug is made of composite material, the first bushing can be arranged in the second through hole. The first bushing prevents lug wear and prolongs lug life. After the first bush is worn out, it is easier to replace than the lugs.

Preferably, the support body is made of fluffy and lightweight materials such as foam materials.

Preferably, the main beam is provided with a second lug compatible with the first lug; bolts or screws pass through the first lug and the second lug in turn, and the side beam installed on the main beam.

Preferably, a sleeve is also included, and at least one of the second lugs is provided on the outer surface of the sleeve; the sleeve is sleeved on the outer surface of the main beam; the main beam is provided with A first through hole extending in the axial direction; a second bushing is arranged in the first through hole; bolts or screws pass through the sleeve, the hole wall of the main beam and the second bushing in sequence, and the The sleeve is locked on the main beam.

Preferably, the sleeve includes at least two arc-shaped plates; both sides of the arc-shaped plates are provided with flanges extending radially outward; bolts or screws pass through two adjacent arc-shaped plates in sequence The flanging of the two adjacent curved plates is connected.

Preferably, the main beam is a cuboid; the second lug is arranged on a flat plate; bolts or screws pass through the flat plate and the main beam in turn, and the second lug is installed on the main beam superior.

The truss in the present invention consists of main girders and side girders. Among them, the main beam makes full use of the ductility and material uniformity of metal materials, the designability and fatigue properties of composite materials, so that the main beam can not only withstand instantaneous impact and long-term high-frequency vibration, but also has good resistance High temperature properties and tensile strength. The invention provides an insulating coating on the outer surface of the metal cylinder, which can prevent the galvanic corrosion problem between the metal cylinder and the first fiber-reinforced plastic layer. When the first fiber-reinforced plastic layer is a carbon fiber-reinforced plastic layer, its impact resistance is poor and it is easily affected by the external environment. Therefore, a glass fiber-reinforced plastic layer is arranged on the outer surface of the carbon fiber-reinforced plastic layer to enhance the impact resistance of the main beam. .

The side girder of the truss in the present invention makes full use of the designability and fatigue properties of the composite material, so that it has excellent tensile and compressive properties. The fiber reinforced material is wrapped around the ear piece and the support body along the axial direction of the support body to improve the bonding strength of the ear piece and the support body. More importantly, the side beam has excellent tensile properties, and the tensile strain can reach up to 3.5% or more. The side beam has excellent compressive performance by wrapping the lugs and the support body with the fiber reinforced material along the circumferential direction and the axial direction of the support body.

Compared with the all-metal truss, the truss in the present invention has an obvious weight advantage and a higher safety factor under the condition of achieving the same various mechanical indexes, no matter the main beam or the side beam in the present invention can 30% lighter than all-metal rods. Compared with all-metal rods, under the condition of the same weight and the same length, the mechanical indexes of the main girder and the side girder of the present invention are both increased by 20% to 40%. This also means that the present invention will have a bright application prospect in ocean engineering, bridge engineering and other fields that have strict requirements on structural weight.

Under the condition of achieving the same mechanical indexes such as tensile performance, compression resistance and impact resistance, the weight of the truss of the present invention is only 70% of the weight of the all-metal truss. That is to say, by using the truss of the present invention instead of the all-metal truss, the workload required for handling can be reduced, the work efficiency can be improved, and the cost required for production can be reduced. Considering from another aspect, because the weight of the truss of the present invention is only 70% of the weight of the all-metal truss under the condition of reaching the same mechanical indexes such as tensile performance, compressive performance, and impact resistance, so the lifting equipment The length or quantity of main girders or side girders that can be hoisted is greater than that of all-metal rods, thereby reducing the number of hoisting times, reducing the workload of hoisting, improving work efficiency, and reducing production costs.

The main beam and the side beam are connected together through the cooperation of the first lug and the second lug, which is convenient for installation and disassembly.

Description of drawings

Fig. 1 is the structural representation of the truss in embodiment 1;

Fig. 2 is the schematic diagram of the axial section of the main beam in embodiment 1;

Fig. 3 is the structural representation of the side beam in embodiment 1;

Fig. 4 is the structural explosion diagram of the side beam in embodiment 1;

Fig. 5 is a structural schematic diagram after hiding the main beam in Fig. 1;

Fig. 6 is the structural representation of the truss in embodiment 2;

Fig. 7 is another perspective schematic view of the structure shown in Fig. 6;

Fig. 8 is the structural representation of the truss in embodiment 3;

Fig. 9 is a schematic diagram of the axial section of the main beam and the flange in embodiment 3;

Fig. 10 is the structural representation of main beam and flange in embodiment 4;

Fig. 11 is the structural representation of the side beam in embodiment 5;

Fig. 12 is the structural representation of the side beam in embodiment 6;

Fig. 13 is a schematic diagram of a radial cross-section of a side beam in Embodiment 6;

Fig. 14 is a schematic exploded view of the partial structure of the side beam in embodiment 8;

Fig. 15 is a schematic diagram of a radial cross-section of a side beam in Embodiment 8;

Fig. 16 is the structural representation of the side beam in embodiment 9;

Fig. 17 is a partial structural schematic diagram of a side beam in Embodiment 9;

Fig. 18 is a schematic diagram of a radial cross section of a side beam in Embodiment 9;

Fig. 19 is a schematic axial cross-sectional view of a composite material rod in Example 10;

Figure 20 is a schematic structural view of the side beam in Embodiment 11;

Fig. 21 is a schematic exploded view of the partial structure of the side beam in embodiment 11;

Fig. 22 is a schematic diagram of a radial section of a side beam in Embodiment 11;

Fig. 23 is a schematic diagram of a radial cross-section of the composite material rod shown in Fig. 22 after being covered with a fourth fiber-reinforced material layer.

Detailed ways

The present invention is described in detail below in conjunction with accompanying drawing:

Example 1

As shown in FIG. 1 , the truss includes a main beam 1 and a side beam 2 . One end of the side beam 2 is connected to the main beam 1 .

As shown in Fig. 2, the main girder 1 comprises a first composite material member. The first bar of composite material comprises a metal cylinder 11 . Metal cylinder 11 can adopt various metal materials, such as metals such as steel, iron, alloy. The metal cylinder 11 is provided with a first through hole 111 . The outer surface 112 of the metal cylinder 11 is wavy. The wavy shape extends in the axial direction of the metal cylinder 11 . The outer surface of the metal cylinder 11 is covered with an insulating resin layer (not shown in the figure). The surface of the insulating resin layer is covered with a first fiber reinforced plastic layer 12 . It only needs that the insulating resin layer can insulate and separate the metal cylinder 11 from the first fiber reinforced plastic layer 12 . The first fiber reinforced plastic layer 12 is carbon fiber, metal fiber, carbon fiber, boron fiber, asbestos fiber, metal fiber, aramid fiber, orlon fiber, polyester fiber, nylon fiber, vinylon fiber, polypropylene fiber, polyimide One or more reinforced plastics of amine fiber, cotton fiber and sisal. The first fiber-reinforced plastic layer 12 is formed by winding the first fiber-reinforced plastic wire or the first fiber-reinforced plastic tape on the outer surface of the metal cylinder 11, and a plurality of first fiber-reinforced plastic wires or first fiber-reinforced plastic tapes are wound in sequence on the outer surface of the metal cylinder 1. The outer surface of the first fiber reinforced plastic layer 12 is also provided with a second fiber reinforced plastic layer 13 . The second fiber reinforced plastic layer 13 is a glass fiber reinforced plastic layer or a whisker reinforced plastic layer. The second fiber-reinforced plastic layer 13 is formed by winding second fiber-reinforced plastic wires or second fiber-reinforced plastic tapes on the outer surface of the first fiber-reinforced plastic layer 12 in sequence. In the example shown in FIG. 2 , the first fiber reinforced plastic layer 12 is a carbon fiber reinforced plastic layer, and the second fiber reinforced plastic layer 13 is a glass fiber reinforced plastic layer. Both the first fiber-reinforced plastic layer 12 and the second fiber-reinforced plastic layer 13 adapt to the corrugated shape of the outer surface 112 of the metal cylinder 11 .

As shown in FIGS. 3 and 4 , the side member 2 includes a support body 21 . In the preferred example shown in the figure, the support body 21 is in the shape of a strip and made of foam material. Two ends of the support body 21 are respectively provided with a first tab 22 . The first lug 22 can be made of metal material or composite material. Composite materials can be metal matrix composites, ceramic matrix composites and polymer matrix composites. Preferably in this embodiment, the first lug 22 is made of metal material. The first lug 22 is sheet-shaped and has a second through hole 221 .

The side beam 2 also includes a first connecting piece. The first connecting piece includes a first protrusion 231 and a first slot 232 that match. The first protrusion 231 is disposed on one of the first lug 22 and the supporting body 21 , and the first slot 232 is disposed on the other of the first lug 22 and the supporting body 21 . Preferably in this embodiment, the first protrusion 231 is disposed on the first lug 22 , and the first slot 232 is disposed at the end of the supporting platform 21 . The first protrusion 231 is removably plugged into the first slot 232 , and the first lug 22 is mounted on the end of the supporting body 21 .

The outer surface of the support body 21 is covered with a third layer 24 of fiber-reinforced material. The third fiber reinforced material layer 24 is formed by winding the support body 21 and the first lug 22 along the axial direction of the support body 21 with the third fiber reinforcement material wire or the third fiber reinforcement material belt, and then heating and curing. The third fiber-reinforced material layer 24 is a third fiber-reinforced resin layer. The third fiber-reinforced resin layer includes third fibers and a third resin. The third fiber is selected from glass fiber, carbon fiber, metal fiber, boron fiber, asbestos fiber, aramid fiber, oron fiber, polyester fiber, nylon fiber, vinylon fiber, polypropylene fiber, polyimide fiber, cotton fiber and one or any combination of sisal. The third resin is selected from one or more of epoxy resins, phenolic resins, vinyl resins, benzoxazine resins, polyimide resins, and bismaleimide resins.

The first ear piece 22 is further provided with a first groove 223 , and the first groove 223 divides the first ear piece 22 into two single pieces 220 . Each single piece 220 is provided with a second through hole 221 . When the third fiber-reinforced material wire or the third fiber-reinforced material strip is wound around the first lug 22 in the axial direction, it is accommodated in the first groove 223, and the third fiber-reinforced material or the third fiber is restricted by the first groove 223. Reinforcing band, ensure that the third fiber reinforced wire or the third fiber reinforced band is firmly wound on the first ear piece 22 and the support body 21, avoiding the third fiber reinforced wire or the third fiber reinforced band from the first ear piece 22 or the support body Body 21 slides off.

As shown in FIG. 5 , a sleeve 3 is sheathed on the outer surface of the main beam 1 . A second lug 31 is provided on the outer surface of the sleeve 3 . The second lug 31 is provided with a second groove 32 . The second groove 32 divides the second tab 22 into two individual pieces 30 . Each single piece 30 is provided with a third through hole 33 . The first lug 22 at one end of the side beam 2 is inserted into the second groove 32, and bolts are used to pass through the third through hole 33, the second through hole 221 and the third through hole 33 in sequence, and the side beam 2 is installed on the main beam 1 .

The sleeve 3 is formed by splicing two arc-shaped plates 34 . Both sides of the arc-shaped plate 34 are provided with flanges 35 extending radially outward. Bolts are used to sequentially pass through the flanges 35 on two adjacent arc-shaped plates 34 to connect the two arc-shaped plates 34 so that they are sheathed on the main beam 1 . In the first through hole 111 of the main beam 1 , a second bushing 4 is provided in a region corresponding to the position of the sleeve 3 . Screws are used to sequentially pass through the arc plate 34 , the hole wall of the main beam 1 and the second bushing 4 to lock the arc plate 34 on the main beam 1 and improve the stability of the side beam 2 installed on the main beam 1 .

The main girder 1 of this embodiment makes full use of the ductility and material uniformity of metal materials, the designability and fatigue properties of composite materials, so that it can not only withstand instantaneous impact and long-term high-frequency vibration, but also has Good high temperature resistance and tensile strength. An insulating coating is provided on the outer surface of the metal cylinder 11 to prevent galvanic corrosion between the metal cylinder and the first fiber reinforced plastic layer 12 . When the first fiber-reinforced plastic layer 12 is a carbon fiber-reinforced plastic layer, its impact resistance is poor, and it is easily affected by the external environment. Shocking.

In the side beam 2 of this embodiment, the first ear piece 22 and the support body 21 are wrapped around the first ear piece 22 and the support body 21 through the third fiber reinforced material thread or the third fiber reinforced material belt, which improves the first ear piece 22 and the support body 21. A binding force between the ear piece 22 and the support body 21 . More importantly, the third fiber-reinforced material wire or the third fiber-reinforced material belt is wound along the axial direction of the support body 21, so that the tensile performance of the side beam 2 is greatly improved compared with the all-metal rod.

Compared with the all-metal truss, the truss of this embodiment has obvious weight advantage, volume advantage and higher safety factor under the condition of achieving the same various mechanical indexes. It can reduce the weight by 30% compared with all metal rods. Compared with all-metal rods, under the condition of the same weight and the same length, the tensile performance, compressive performance and impact resistance of the main girder of this embodiment are all improved by 20% to 40%, and the side girder of this embodiment is The tensile performance is improved by 20% to 40%. The truss of this embodiment has a bright application prospect in the fields with strict requirements on structural weight, such as marine engineering and bridge engineering.

The first lug 22 may not be provided with the first groove 223, which does not affect the installation of the compound side beam and its mechanical properties.

Example 2

Different from Embodiment 1, as shown in FIGS. 6 and 7 , the truss in this embodiment includes one main girder 1 and two side girders 2 . The main beam 1 is a cuboid. The two side beams 2 are respectively connected to the main beam 1 through a second lug 31 . Each second lug 31 is arranged on a flat plate 5 . Two flat plates 5 are located on both sides of the main beam 1 and abut against the outer surface of the main beam 1 . Bolts are used to pass through one of the flat plates 5 , the main beam 1 and the other flat plate 5 sequentially from one side of the main beam 1 , and the flat plate 5 provided with the second lug 31 is installed on the main beam 1 .

Example 3

On the basis of Embodiment 1, as shown in FIG. 8 , the number of main girders 1 and side girders 2 included in the truss of this embodiment is increased. Each girder 1 comprises two first composite rods 10 . Two ends of each first composite rod 10 are respectively provided with a flange 6 . The first composite material rod 10 is connected to another first composite material rod 10 through the flange 6 at its end to form the main girder 1 .

As shown in FIG. 9 , the outer surface 61 of the flange 6 is wavy. The first fiber-reinforced plastic layer 12 covers the corrugated outer surface 61 of the flange 6 and mechanically engages with the corrugated outer surface 61 of the flange 6, thereby connecting the flange 6 to the first composite rod, and through mechanical engagement to transfer the load between interfaces.

Example 4

Different from Embodiment 3, as shown in FIG. 10 , the outer surface 61 of the flange 6 in this embodiment is a smooth surface, and is provided with a plurality of first protrusions 62 distributed along the circumferential direction. The first fiber-reinforced plastic wire 01 is wound along the axial direction of the metal cylinder 11, and sequentially bypasses the first bumps 62 on the flanges 6 at both ends of the metal cylinder 11, so that the flange 6 and the first composite rod are connected. connected to form the first fiber-reinforced plastic layer 12.

Example 5

Different from Embodiment 1, as shown in FIG. 11 , there is no first groove on the first tab 22 in this embodiment. And the third fiber reinforced material layer 24 is formed by winding the support body 21 and the first lug 22 along the circumferential direction and the axial direction of the support body 12 with the third fiber reinforcement material wire or the third fiber reinforcement material belt, and then heating and curing. The third fiber reinforced material layer 24 covers the connecting portion of the first ear piece 22 and the support body 21 .

In the side beam 2 of this embodiment, the first ear piece 22 and the support body 21 are wrapped around the first ear piece 22 and the support body 21 through the third fiber reinforced material thread or the third fiber reinforced material belt, which improves the first ear piece 22 and the support body 21. A binding force between the ear piece 22 and the support body 21 . More importantly, the third fiber-reinforced material wire or the third fiber-reinforced material strip is wound along the circumferential direction and the axial direction of the support body 21, so that the compressive performance of the side beam 2 is greatly improved compared with the all-metal rod. And compared with all-metal rods, in the case of achieving the same mechanical indicators, the side beam 2 of this embodiment has obvious advantages in weight, volume and higher safety factor, and can reduce the weight by 30%. Compared with all-metal rods, under the condition of the same weight and the same length, the tensile performance, compressive performance and impact resistance of the main girder of this embodiment are all improved by 20% to 40%, and the side girder of this embodiment is Compressive performance increased by 20% to 40%. Therefore, the truss of this embodiment has a bright application prospect in marine engineering, bridge engineering and other fields with strict requirements on structural weight.

Example 6

On the basis of Embodiment 1, as shown in FIGS. 12 and 13 , the outer surface of the third fiber-reinforced material layer 24 is also coated with a fourth fiber-reinforced material layer 25 . The fourth fiber-reinforced material layer 25 is formed by winding the third fiber-reinforced material layer 24 with the fourth fiber-reinforced material wire or the fourth fiber-reinforced material belt along the circumferential direction and the axial direction of the support body, and then heating and curing. The fourth fiber reinforced material layer 25 covers the connecting portion of the first ear piece 22 and the support body 21 .

The fourth fiber-reinforced material layer 25 is a fourth fiber-reinforced resin layer. The fourth fiber-reinforced resin layer includes fourth fibers and fourth resin. The fourth fiber and the third fiber may be the same or different. The fourth fiber is selected from glass fiber, carbon fiber, metal fiber, boron fiber, asbestos fiber, aramid fiber, orlon fiber, polyester fiber, nylon fiber, vinylon fiber, polypropylene fiber, polyimide fiber, cotton fiber and one or any combination of sisal. The fourth resin and the third resin are the same or different. The fourth resin is selected from one or more of epoxy resins, phenolic resins, vinyl resins, benzoxazine resins, polyimide resins, and bismaleimide resins.

In the side beam 2 of this embodiment, the first ear piece 22 and the support body 21 are wrapped around the first ear piece 22 and the support body 21 through the third fiber reinforced material thread or the third fiber reinforced material belt, which improves the first ear piece 22 and the support body 21. A binding force between the ear piece 22 and the support body 21 . More importantly, the third fiber-reinforced material wire or the third fiber-reinforced material belt is wound along the axial direction of the support body 21, so that the tensile performance of the side beam 2 is greatly improved compared with the all-metal rod. The fourth fiber reinforced material wire or the fourth fiber reinforced material strip is wound along the circumferential direction and the axial direction of the support body 21, so that the compression resistance of the side beam 2 is greatly improved compared with the all-metal rod. And compared with all-metal rods, in the case of achieving the same mechanical indicators, the side beam 2 of this embodiment has obvious advantages in weight, volume and higher safety factor, and can reduce the weight by 30%. Compared with all-metal rods, under the condition of the same weight and the same length, the tensile performance, compressive performance and impact resistance of the main girder of this embodiment are all improved by 20% to 40%, and the side girder of this embodiment is Both tensile and compressive properties are increased by 20% to 40%. Therefore, the truss of this embodiment has a bright application prospect in marine engineering, bridge engineering and other fields with strict requirements on structural weight.

Example 7

Different from Embodiment 6, the third fiber-reinforced material layer 24 in this embodiment consists of a third fiber-reinforced material wire or a third fiber-reinforced material belt wound around the support body 21 and the first ear along the circumferential direction and axial direction of the support body 21. Sheet 22 is then formed by heating and curing. The third fiber reinforced material layer 24 covers the connecting portion of the first ear piece 22 and the support body 21 . The fourth fiber-reinforced material layer wrapped on the third fiber-reinforced material layer 24 is formed by heating and curing the fourth fiber-reinforced material wires or fourth fiber-reinforced material strips wound along the axial direction of the support body 21 . When the fourth fiber reinforced material wire or the fourth fiber reinforced material strip is wound around the first lug 22 in the axial direction, it is accommodated in the first groove 223, and the fourth fiber reinforced material or the fourth fiber is restricted by the first groove 223. Reinforcement band, ensure that the fourth fiber reinforced wire or the fourth fiber reinforced band is firmly wound on the first ear piece 22 and the support body 21, avoiding the fourth fiber reinforced wire or the fourth fiber reinforced band from the first ear piece 22 or the support body Body 21 slides off.

In the side beam 2 of this embodiment, the first ear piece 22 and the support body 21 are wrapped around the first ear piece 22 and the support body 21 through the third fiber reinforced material thread or the third fiber reinforced material belt, which improves the first ear piece 22 and the support body 21. A binding force between the ear piece 22 and the support body 21 . More importantly, the third fiber-reinforced material wire or the third fiber-reinforced material strip is wound along the circumferential direction and the axial direction of the support body 21, so that the compressive performance of the side beam 2 is greatly improved compared with the all-metal rod. The fourth fiber-reinforced material wire or the fourth fiber-reinforced material strip is wound along the axial direction of the support body 21, so that the tensile performance of the side beam 2 is greatly improved compared with that of an all-metal rod. And compared with all-metal rods, in the case of achieving the same mechanical indicators, the side beam 2 of this embodiment has obvious advantages in weight, volume and higher safety factor, and can reduce the weight by 30%. Compared with all-metal rods, under the condition of the same weight and the same length, the tensile performance, compressive performance and impact resistance of the main girder of this embodiment are all improved by 20% to 40%, and the side girder of this embodiment is Both tensile and compressive properties are increased by 20% to 40%. Therefore, the truss of this embodiment has a bright application prospect in marine engineering, bridge engineering and other fields with strict requirements on structural weight.

Example 8

Different from Embodiment 6, as shown in FIGS. 14 and 15 , two first ear pieces 22 are respectively provided at both ends of the support body 21 of this embodiment. The two first lugs 22 located at the same end of the support body 21 are arranged at intervals. The gap 224 between the two first lugs 22 passing through the same end of the support body 21 is adapted to the single piece 30 of the second lug 31 on the main beam 1 . A single piece 30 of the second lug 31 is inserted into the gap 224, the first lug 22 is inserted into the second groove 32 on the second lug 31, and the bolts are passed through the first lug 22 and the second lug in turn. 31, so that the side beam 2 is installed on the main beam 1.

Example 9

Different from Embodiment 1, as shown in FIGS. 16-18 , the side beam 2 of this embodiment includes a support body 21 . In the preferred example shown in the figure, the support body 21 is a cylinder and is made of foam material. Two ends of the support body 21 are respectively provided with a first tab 22 . The first lug 22 can be made of metal material or composite material. Composite materials can be metal matrix composites, ceramic matrix composites and polymer matrix composites. Preferably in this embodiment, the first lug 22 is made of metal material. The first tab 22 is sheet-shaped and has a second through hole 221 .

The first ear piece 22 is further provided with a first groove 223 , and the first groove 223 divides the first ear piece 22 into two single pieces 220 . Each single piece 220 is provided with a second through hole 221 . A single piece 30 of the second lug 31 on the main beam 1 is inserted into the first groove 223, and the bolts are sequentially passed through the first lug 22 and the second lug 31, thereby realizing the connection between the side beam 2 and the main beam 1. connect.

As shown in FIG. 17 , one end of the first ear piece 22 is provided with a cylinder 225 adapted to the supporting body 21 . A plurality of second protrusions 226 are disposed on the post 225 . A plurality of second protrusions 226 are distributed along the circumferential direction. The cylinder 225 on the first lug 22 abuts against the support body 21, the third fiber reinforced material wire or the third fiber reinforced material belt is wound along the axial direction of the support body 21, and turns around in turn against the two ends of the support body 21. The second protrusions 226 of the first lugs 22 connect the first lugs 22 against both ends of the support body 21 to the support body 21 , and form the third fiber reinforced material layer 24 on the outer surface of the support body 21 .

As shown in FIGS. 16 and 18 , the outer surface of the third layer of fiber-reinforced material 24 is also coated with a fourth layer of fiber-reinforced material 25 . The fourth fiber-reinforced material layer 25 is formed by winding the third fiber-reinforced material layer 24 with the fourth fiber-reinforced material wire or the fourth fiber-reinforced material belt along the circumferential direction and the axial direction of the support body, and then heating and curing. The fourth fiber reinforced material layer 25 covers the contact portion of the first lug 22 and the support body 21 .

The third fiber-reinforced material layer 24 is a third fiber-reinforced resin layer. The fourth fiber-reinforced material layer 25 is a fourth fiber-reinforced resin layer. The third fiber-reinforced resin layer includes third fibers and a third resin. The fourth fiber-reinforced resin layer includes fourth fibers and fourth resin. The third fiber and the fourth fiber are the same or different. The third fiber and the fourth fiber are selected from glass fiber, carbon fiber, metal fiber, boron fiber, asbestos fiber, aramid fiber, orlon fiber, polyester fiber, nylon fiber, vinylon fiber, polypropylene fiber, polyimide One or more of fiber, cotton fiber and sisal. The third resin and the fourth resin are the same or different. The third resin and the fourth resin are selected from one or more of epoxy resin, phenolic resin, vinyl resin, benzoxazine resin, polyimide resin and bismaleimide resin.

In the composite material bar of this embodiment, the first ear piece 22 and the support body 21 are wrapped around the first ear piece 22 and the support body 21 by the third fiber reinforced material thread or the third fiber reinforced material belt, thereby improving the The bonding force between the first tab 22 and the support body 21 . More importantly, the third fiber-reinforced material wire or the third fiber-reinforced material belt is wound along the axial direction of the support body 21, so that the tensile performance of the side beam 2 is greatly improved compared with the all-metal rod. The fourth fiber reinforced material wire or the fourth fiber reinforced material strip is wound along the circumferential direction and the axial direction of the support body 21, so that the compression resistance of the side beam 2 is greatly improved compared with the all-metal rod. And compared with all-metal rods, in the case of achieving the same mechanical indicators, the side beam 2 of this embodiment has obvious advantages in weight, volume and higher safety factor, and can reduce the weight by 30%. Compared with all-metal rods, under the condition of the same weight and the same length, the tensile performance, compressive performance and impact resistance of the main girder of this embodiment are all improved by 20% to 40%, and the side girder of this embodiment is Both tensile and compressive properties are increased by 20% to 40%. Therefore, the truss of this embodiment has a bright application prospect in marine engineering, bridge engineering and other fields with strict requirements on structural weight.

Example 10

Different from Embodiment 9, as shown in FIG. 19 , in this embodiment, the first wave segment 227 is provided on the outer surface of the cylinder 225 on the first ear piece 22 , and the second protrusion 226 is not provided. The third fiber-reinforced material wire or the third fiber-reinforced material belt is wound around the column body 225 on the lug 22 and the support body 21 along the circumferential direction and the axial direction of the support body 21 and then heated and solidified to form the third fiber-reinforced material layer 24 . The third layer of fiber reinforced material 24 mechanically engages with the first wave segment 227 on the outer surface of the cylinder 225 . Thus, the lugs 22 at both ends of the support body 21 are connected to the support body 21 . The outer surface of the third fiber material layer 24 is also wrapped with a fourth fiber reinforcement material layer 25 . The fourth fiber material layer 25 is formed by winding the first fiber reinforcement material layer 25 with the fourth fiber reinforcement material wire or the fourth fiber reinforcement material strip along the circumferential direction and the axial direction of the support body 21 and then heating and curing.

The third fiber-reinforced material layer 24 is a third fiber-reinforced resin layer. The fourth fiber-reinforced material layer 25 is a fourth fiber-reinforced resin layer. The third fiber-reinforced resin layer includes third fibers and a third resin. The fourth fiber-reinforced resin layer includes fourth fibers and fourth resin. The third fiber and the fourth fiber are the same or different. The third fiber and the fourth fiber are selected from glass fiber, carbon fiber, metal fiber, boron fiber, asbestos fiber, aramid fiber, orlon fiber, polyester fiber, nylon fiber, vinylon fiber, polypropylene fiber, polyimide One or more of fiber, cotton fiber and sisal. The third resin and the fourth resin are the same or different. The third resin and the fourth resin are selected from one or more of epoxy resin, phenolic resin, vinyl resin, benzoxazine resin, polyimide resin and bismaleimide resin. In a preferred solution of this embodiment, the third fiber is carbon fiber, and the fourth fiber is glass fiber.

In the side beam of this embodiment, the first ear piece 22 and the support body 21 are wrapped around the first ear piece 22 and the support body 21 through the third fiber reinforced material wire or the third carbon fiber reinforced material belt to wrap the first ear piece 22 and the support body 21, thereby improving the first ear piece 22 and the bonding force between the support body 21. More importantly, the third fiber-reinforced material wire or the third fiber-reinforced material belt is wound along the circumferential direction and the axial direction of the support body 21, so that the compressive performance of the side beam is greatly improved compared with the all-metal rod. The fourth fiber-reinforced material wire or the fourth fiber-reinforced material belt is wound outside the third fiber-reinforced material layer along the circumferential direction and the axial direction of the support body 21, which further improves the compressive performance of the side beam and greatly improves the fourth fiber. The fiber can enhance the corrosion resistance of the side beam, play a protective role, prolong the service life of the side beam, and expand the application range of the truss. And compared with all-metal rods, in the case of achieving the same mechanical indicators, the side beam of this embodiment has obvious weight advantages, volume advantages and higher safety factor, and can reduce the weight by 30%. Compared with all-metal rods, under the condition of the same weight and the same length, the tensile performance, compressive performance and impact resistance of the main girder of this embodiment are all improved by 20% to 40%, and the side girder of this embodiment is Both tensile and compressive properties are increased by 20% to 40%. This also means that the side beam of this embodiment will have a bright application prospect in fields such as aerospace, heavy machinery, and automobiles.

Example 11

Different from Embodiment 1, as shown in FIGS. 20-22 , the side beam 2 of this embodiment includes a support body 21 . In the preferred example shown in the figure, the support body 21 is in the shape of a strip and made of foam material. The side member 2 also includes two connecting rods 26 . Two ends of the connecting rod 26 are respectively provided with a first lug 22 . The first lug 22 is sheet-shaped and has a second through hole 221 . A first bushing 222 is disposed in the second through hole 221 . The first bush 222 can be a metal bush or a non-metal bush. The first lug 22 and the connecting rod 26 are integrally arranged, and the first lug 22 and the connecting rod 26 are made of metal materials, or are made by winding the fifth fiber reinforced material wire or the fifth fiber reinforced material belt and then heating and curing, or Formed using a resin transfer molding process. In this embodiment, preferably, the first lug 22 and the connecting rod 26 are formed by heating and curing the fifth fiber reinforced material wire or the fifth fiber reinforced material belt after winding.

The supporting body 21 is provided with two grooves 211 extending along the axial direction. The groove 211 is adapted to the connecting rod 26 . The connecting rod 26 is inserted into the groove 211 along the direction of the arrow in FIG. 21 , so that the first lug 22 protrudes from the groove 211 and is arranged at the end of the supporting body 21 . The two first lugs 22 located at the same end of the support body 21 are arranged at intervals. The gap 224 between the two first lugs 22 passing through the same end of the support body 21 is adapted to the single piece 30 of the second lug 31 on the main beam 1 . A single piece 30 of the second lug 31 is inserted into the gap 224, the first lug 22 is inserted into the second groove 32 on the second lug 31, and the bolts are passed through the first lug 22 and the second lug in turn. 31, so that the side beam 2 is installed on the main beam 1. The first bushing 222 in the second through hole 221 can prevent the lugs from being worn. After the first bushing 222 is worn out, it is easier to replace than the first lug 22 .

As shown in FIGS. 20 and 22 , the outer surface of the support body 21 is covered with a third layer 24 of fiber-reinforced material. The third fiber-reinforced material layer 24 is formed by winding the support body 21 , the connecting rod 26 and the first lug 22 along the circumferential and axial directions of the support body 21 with the third fiber-reinforced material wire or the third fiber-reinforced material belt, and then heating and curing. The winding direction of the fifth fiber-reinforced material wire or the fifth fiber-reinforced material strip for forming the connecting rod 26 and the first lug 22 is along the axial direction of the support body 21 .

The outer surface of the third fiber reinforced material layer 24 may also be coated with a fourth fiber reinforced material layer 25 (as shown in FIG. 23 ). The fourth fiber material layer 25 is formed by wrapping the fourth fiber reinforcement material wire or the fourth fiber reinforcement material strip around the outer surface of the third fiber reinforcement material layer 24 along the axial direction of the support body 21 and then heating and curing.

The third fiber-reinforced material layer 24 is a third fiber-reinforced resin layer. The third layer of fiber reinforcement includes third fibers and third fibers. The fourth fiber-reinforced material is a fourth fiber-reinforced resin. The fourth fiber-reinforced resin includes fourth fibers and fourth resin. The fifth fiber-reinforced material is a fifth fiber-reinforced resin. The fifth fiber-reinforced resin includes fifth fibers and fifth resin. The third fiber, the fourth fiber and the fifth fiber are the same or different. The third fiber, the fourth fiber and the fifth fiber are selected from glass fiber, carbon fiber, metal fiber, boron fiber, asbestos fiber, aramid fiber, Oron fiber, polyester fiber, nylon fiber, vinylon fiber, polypropylene fiber, One or more of polyimide fiber, cotton fiber and sisal. The third resin, the fourth resin and the fifth resin are the same or different. The third resin, the fourth resin and the fifth resin are selected from one or any combination of epoxy resin, phenolic resin, vinyl resin, benzoxazine resin, polyimide resin, bismaleimide resin kind. In a preferred solution of this embodiment, the third fiber is carbon fiber, and the fourth fiber is glass fiber.

In the side beam of this embodiment, the first lug 22 and the connecting rod 26 are integrally arranged, and are formed by winding the fifth fiber reinforced material wire or the fifth fiber reinforced material belt and heating and curing, and the fifth fiber reinforced material wire or the fifth fiber reinforced material The winding direction of the reinforcing material belt is along the axial direction of the support body 21, so that the tensile performance of the side beam 2 is greatly improved compared with the all-metal rod. The third fiber-reinforced material wire or the third fiber-reinforced material belt is wound along the circumferential direction and the axial direction of the support body 21, wrapping the lugs, connecting rods and support body together, so that the side beam 2 is more compressive than the all-metal rod. Performance is greatly improved. The fourth fiber reinforced material line or the fourth fiber reinforced material belt is wound outside the first fiber reinforced material layer along the circumferential direction and axial direction of the support body 1, which further improves the compressive performance of the side beam and greatly improves the fourth fiber. The fiber can enhance the corrosion resistance of the side beam, play a protective role, prolong the service life of the side beam, and expand the application range of the truss. And compared with all-metal rods, in the case of achieving the same mechanical indicators, the side beam 2 of this embodiment has obvious advantages in weight, volume and higher safety factor, and can reduce the weight by 30%. Compared with all-metal rods, under the condition of the same weight and the same length, the tensile performance, compressive performance and impact resistance of the main girder of this embodiment are all improved by 20% to 40%, and the side girder of this embodiment is Both tensile and compressive properties are increased by 20% to 40%. Therefore, the truss of this embodiment has a bright application prospect in marine engineering, bridge engineering and other fields with strict requirements on structural weight.

The embodiments in the present invention are only used to illustrate the present invention, and do not constitute a limitation to the scope of the claims. Other substantially equivalent substitutions that can be thought of by those skilled in the art are within the protection scope of the present invention.

Claims (25)

1. truss, is characterized in that, comprises at least one girder and at least one curb girder; At least one end of described curb girder is connected with a wherein girder.

2. truss according to claim 1, is characterized in that, described girder comprises at least one first composite material rod member; Described first composite material rod member comprises metal cartridge; Described metal cartridge outer surface is coated with the first fiber-reinforced plastic layer; Described metal cartridge outer surface is provided with insulation coating; Described insulation coating is arranged between described metal cartridge outer surface and described first fiber-reinforced plastic layer.

3. truss according to claim 2, is characterized in that, described first fiber-reinforced plastic layer is formed for one or more the first fiber reinforcement plastic stockline or the first fiber reinforcement plastic material strip are wound in described metal cartridge outer surface; Described many first fiber reinforcement plastic stocklines or the first fiber reinforcement plastic material strip are wound in described metal cartridge outer surface successively.

4. truss according to claim 2, is characterized in that, described first fiber-reinforced plastic layer outer surface is also provided with the second fiber-reinforced plastic layer; Described second fiber-reinforced plastic layer is that the second fiber reinforcement plastic stockline or the second fiber reinforcement plastic material strip are wound in described first fiber-reinforced plastic layer outer surface formation successively.

5. truss according to claim 4, is characterized in that, described first fiber-reinforced plastic layer is cfrp layer; Described second fiber-reinforced plastic layer is glass fiber reinforced plastic layer or whisker reinforced plastic layer.

6. truss according to claim 2, is characterized in that, described metal cartridge outer surface is waveform.

7. truss according to claim 2, is characterized in that, the end of described first composite material rod member is provided with flange; Described first composite material rod member is connected with the first composite material rod member described in another by described flange.

8. truss according to claim 7, is characterized in that, the outer surface of described flange is waveform; Described first fiber-reinforced plastic layer covers the outer surface of described flange undulate, with the outer surface mechanical snap of described flange undulate.

9. truss according to claim 7, is characterized in that, the two ends of described first composite material rod member are equipped with described flange; The outer surface of described flange is provided with multiple the first projection along the circumferential direction distributed; First fiber reinforcement plastic stockline or the first fiber reinforcement plastic material strip are axially wound around and the first projection walked around successively in described metal cartridge two end flange along described metal cartridge, the flange at described metal cartridge two ends is connected with described metal cartridge, and forms described first fiber-reinforced plastic layer.

10. truss according to claim 1, is characterized in that, described curb girder comprises support; The two ends of described support are respectively equipped with at least one first auricle; The outer surface of described support is coated with the 3rd fibrous reinforcing material.

11. truss according to claim 10, is characterized in that, described first auricle is resisted against on described support; 3rd fibre reinforced materials line or the 3rd fibre reinforced materials band form described 3rd fibrous reinforcing material along being heating and curing after the axis of described support is wound around described support and described first auricle, and are connected with described support by described first auricle.

12. truss according to claim 11, is characterized in that, the outer surface of described 3rd fibrous reinforcing material is also coated with the 4th fibrous reinforcing material; 4th fibre reinforced materials line or the 4th fibre reinforced materials band are along the circumferencial direction of described support and described 4th fibrous reinforcing material of formation that is heating and curing after being axially wound around described 3rd fibrous reinforcing material.

13. truss according to claim 10, is characterized in that, described first auricle is resisted against on described support; Described first auricle along the circumferencial direction of described support and described 3rd fibrous reinforcing material of formation that is heating and curing after being axially wound around described support and described first auricle, and is connected with described support by the 3rd fibre reinforced materials line or the 3rd fibre reinforced materials band.

14. truss according to claim 13, is characterized in that, the outer surface of described 3rd fibrous reinforcing material is also coated with the 4th fibrous reinforcing material; Described 4th fibrous reinforcing material is heating and curing by the 4th fibre reinforced materials line or the 4th fibre reinforced materials band and is formed after described 3rd fibrous reinforcing material of axis winding of described support.

15. truss according to claim 11 or 14, it is characterized in that, described first auricle is provided with the first groove; When described 3rd fibre reinforced materials line or described 3rd fibre reinforced materials band are wound around described first auricle vertically, be placed in described first groove; Or when described 4th fibre reinforced materials line or described 4th fibre reinforced materials band are wound around described first auricle vertically, be placed in described first groove.

16. truss according to claim 11 or 14, it is characterized in that, described first auricle is provided with multiple the second projection along the circumferential direction distributed; Described 3rd fibre reinforced materials line or described 3rd fibre reinforced materials band are wound around vertically and walk around the second projection on the auricle of described support two ends first successively, are connected by first auricle at described support two ends with described support; Or described 4th fibre reinforced materials line or described 4th fibre reinforced materials band are wound around vertically and walk around the second projection on the auricle of described support two ends first successively, are connected by first auricle at described support two ends with described support.

17. truss according to claim 11 or 13, it is characterized in that, the outer surface of described first auricle is waveform; When described 3rd fibre reinforced materials line or described 3rd fibre reinforced materials band are wound around described first auricle, with the outer surface mechanical snap of undulate on described first auricle.

18. truss according to claim 10, is characterized in that, described curb girder also comprises the first link; Described first link comprises the first projection and the first slot that match; Described first projection is arranged on described first auricle and described support on one of them, and described first slot is arranged on another in described first auricle and described support; Described first projection is inserted in described first slot pluggablely, described first auricle is arranged on the end of described support.

19. truss according to claim 10, is characterized in that, described curb girder also comprises connecting rod; The two ends of described connecting rod are respectively equipped with described first auricle; Described support is provided with the groove extended vertically; Described groove and described connecting rod adapt; Described connecting rod embeds in described groove, makes described first auricle stretch out the end that described groove is arranged at described support.

20. truss according to claim 19, is characterized in that, the number of described connecting rod is two; Described support is provided with two described grooves; Each described connecting rod embeds in a described groove; Be arranged at two the auricle intervals settings of described support with one end.

21. truss according to claim 19, is characterized in that, described first auricle and described connecting rod are wholely set; Described first auricle and described connecting rod are obtained by metallic material, or it is obtained to be heating and curing after being wound around by the 5th fibre reinforced materials, or adopt resin transfer molding technique to be formed.

22. truss according to any one of claim 10,11,12,13,14,21, it is characterized in that, described 3rd fibrous reinforcing material is the 3rd fiber-reinforced resin layer; Described 4th fibrous reinforcing material is the 4th fiber-reinforced resin layer; Described 5th fibrous reinforcing material is the 5th fiber-reinforced resin layer; Described 3rd fiber-reinforced resin layer comprises the 3rd fiber and the 3rd resin; Described 4th fiber-reinforced resin layer comprises the 4th fiber and the 4th resin; Described 5th fiber-reinforced resin layer comprises the 5th fiber and the 5th resin; Described 3rd fiber, described 4th fiber or not phase identical with described 5th fiber; Described 3rd fiber, described 4th fiber or described 5th fiber are selected from the one or several arbitrarily in glass fibre, carbon fiber, steel fiber, boron fiber, asbestos fiber, aramid fibre, Orlon fiber, polyester fibre, nylon fiber, vinylon fiber, polypropylene fiber, polyimide fiber, cotton fiber and sisal hemp; Described first resin, described second resin or described 3rd resin are identical or different; Described 3rd resin, described 4th resin or described 5th resin are selected from the one or several arbitrarily in epoxy resin, phenolic resin, vinylite, benzoxazine colophony, polyimide resin, bimaleimide resin.

23. truss according to claim 10, is characterized in that, described girder is provided with the second auricle adapted with described first auricle; Bolt or screw run through described first auricle and described second auricle successively, are arranged on described girder by described curb girder.

24. truss according to claim 23, is characterized in that, also comprise sleeve, and the outer surface of described sleeve is provided with the second auricle described at least one; Described jacket casing is located on the outer surface of described girder; Described girder is provided with the first through hole extended vertically; The second lining is provided with in described first through hole; Bolt or screw run through described sleeve, the hole wall of described girder and described second lining successively, are locked at by described sleeve on described girder; Described sleeve comprises at least two arc plates; The both sides of described arc plate are provided with the flange extended radially outward; Bolt or screw run through the flange on two adjacent arc plates successively, are connected by adjacent two arc plates.

25. truss according to claim 23, is characterized in that, described girder is cuboid; Described second auricle is arranged on a flat board; Bolt or screw run through described flat board and described girder successively, are arranged on described girder by described second auricle.