CN101666162A - Joint arm of cloth arm bracket and manufacturing method thereof as well as concrete conveying machine - Google Patents
Joint arm of cloth arm bracket and manufacturing method thereof as well as concrete conveying machine Download PDFInfo
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- CN101666162A CN101666162A CN200910179427A CN200910179427A CN101666162A CN 101666162 A CN101666162 A CN 101666162A CN 200910179427 A CN200910179427 A CN 200910179427A CN 200910179427 A CN200910179427 A CN 200910179427A CN 101666162 A CN101666162 A CN 101666162A
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- joint arm
- cloth
- riser
- transverse slat
- composite layer
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- 238000004519 manufacturing process Methods 0.000 title abstract description 13
- 239000002131 composite material Substances 0.000 claims abstract description 56
- 239000000835 fiber Substances 0.000 claims abstract description 48
- 229920005989 resin Polymers 0.000 claims abstract description 15
- 239000011347 resin Substances 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 15
- 239000006260 foam Substances 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 5
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- 230000008878 coupling Effects 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
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- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920006387 Vinylite Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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- 239000007924 injection Substances 0.000 description 1
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a joint arm of a cloth arm bracket and a manufacturing method thereof and also relates to a concrete conveying machine provided with the joint arm. The joint arm of the cloth arm bracket comprises a transverse plate and a vertical plate, wherein in the longitudinal direction, the transverse plate and the vertical plate extend along the same direction; in the transverse section, the transverse plate extends horizontally, and the vertical plate extends vertically; the side of the vertical plate has flanging, and the side of the vertical plate and the horizontal flanging are fixed with the transverse plate; and the transverse plate and the vertical plate are respectively provided with a composite material layer which comprises resin and fiber. The joint arm can maintain less weight while ensuring higher strength and fatigue resistance, and also can reduce the adverse effect for the joint arm caused by welding; furthermore, the joint arm provided by the invention also has damping performance and corrosion resistance, thus prolonging the service life of the joint arm.
Description
Technical field
The present invention relates to a kind of cloth jib technology that is used for delivering concrete, the preparation method of particularly a kind of joint arm of cloth jib and this joint arm also relates to a kind of concrete conveyer with this joint arm.
Background technology
At present, when carrying out constructions work, generally with concrete mixer or concrete distributing frame delivering concrete.In the delivering concrete process, concrete pump provides suitable power, makes concrete mud suitably arrive predetermined place by conveyance conduit under the pressure effect, to carry out concrete pouring or perfusion operation away from the position of agitator.Conveyance conduit is joined in proper order by a plurality of carrier pipes and forms.
Conveyance conduit is generally supported by the cloth jib.As shown in Figure 1, this figure is in the prior art, a kind of structural representation of cloth jib.Among the figure, the cloth jib comprises four joint arms 110; Four joint arms 110 are hinged and connected by horizontal hinge 120 orders; Be provided with driving mechanism between two adjacent joint arms 110, driving mechanism comprises hydraulic jack 130 and connecting rod 140; When hydraulic jack 130 carried out stretching motion, driving mechanism can drive adjacent joint arm 110 and rotate relatively, thereby can adjust the not position of end joint arm 110, realized the adjustment to the concrete pouring position.
When delivering concrete, the cloth jib will provide support power for conveyance conduit and concrete mud, and therefore, performances such as the intensity of cloth jib, endurance life, weight directly have influence on the functional performance of concrete conveyer.Along with engineering development, engineer operation require concrete conveyer with transmission and concrete transmission to higher and distant positions more.In order to satisfy the needs of engineer operation, in the concrete conveyer, the cloth jib has increasing joint arm 110; Simultaneously, in order to improve concrete feed flow, the sectional area of conveyance conduit is also increasing; Therefore, in the transmission and concrete transmission process, the load of joint arm 110 is increasing, and further, engineer operation requires joint arm 110 to have higher intensity.In addition, because in the transmission and concrete transmission process, concrete mud produces pulsating load to joint arm 110, therefore, also require joint arm 110 to have higher endurance life.
The joint arm of existing cloth jib is formed by the steel plate welding, and there is following problem in the joint arm of this structure:
The first, there is the contradiction that is difficult to be in harmonious proportion between intensity and the weight.In the prior art, when guaranteeing that by increase steel plate thickness the joint arm has higher intensity, the increase of steel plate thickness must be accompanied by the increase of joint arm weight, and this just feasible joint arm need bear bigger moment, is very easy to cause the overload of cloth jib.Though can make the joint arm with particulate metal, manufacturing cost that undoubtedly can envoy's arm is very high, does not meet actual generation needs.
The second, there is the contradiction that is difficult to be in harmonious proportion between intensity and the manufacture craft performance.By being hinged and connected, syndeton need obtain by welding manner between the joint arm of existing cloth jib; With high-strength steel sheet manufacturing joint arm the time, because the welding performance of high-strength steel sheet is relatively poor, therefore can cause the joint arm to make very difficulty of processing, increase the cost of manufacture of joint arm.And because welding performance is relatively poor, weld is very easy to ftracture because of tired, and shortened the application life of cloth jib.
Three, there is the contradiction that is difficult to be in harmonious proportion between intensity and the fatigue performance.When the steel plate of making the joint arm had higher intensity, its endurance life reduced, and the fatigability fracture appears in joint arm easily, made the lost of life of cloth joint arm.
Summary of the invention
At the problems referred to above, first purpose of the present invention is, a kind of joint arm of in light weight, cloth jib that intensity is high is provided, and guarantees that simultaneously it has higher endurance life.
On the basis of first purpose, second purpose of the present invention is, a kind of concrete conveyer is provided, and this transmission and concrete transmission mechanism comprises the joint arm of above-mentioned cloth jib.
The 3rd purpose of the present invention is, a kind of method of making the joint arm of cloth jib is provided, and when guaranteeing joint arm intensity, improves its manufacture craft performance.
In order to realize above-mentioned first purpose, the joint arm of cloth jib provided by the invention comprises transverse slat, riser; On the longitudinal direction, described transverse slat and riser extend in the same direction; In lateral cross section, described transverse slat horizontal-extending, the vertical extension of described riser, described riser side and transverse slat are fixed, and described transverse slat and riser comprise composite layer respectively, and described composite layer comprises resin and fiber.
Preferably, at least a portion fiber in the composite layer of described transverse slat forms single shaft to cloth.
Preferably, a part of fiber in the composite layer of described transverse slat forms three axial direction fibre cloth.
Preferably, described riser side also has flange, and described flange extends along the transverse slat surface, and fixes with transverse slat.
Preferably, at least a portion fiber in the composite layer of described riser forms twin shaft to cloth.
Preferably, the part fiber of described riser end composite layer forms three axial direction fibre cloth.
Preferably, described riser end also has metal parts, and described metal parts forms installing hole, and described metal parts and composite layer are fixed.
Preferably, described riser also comprises the foam sandwich laminate by the composite layer parcel.
In order to realize above-mentioned second purpose, concrete conveyer provided by the invention comprises the cloth jib, and described cloth jib comprises the joint arm of above-mentioned any cloth jib.
In order to realize above-mentioned the 3rd purpose, the preparation method of the joint arm of cloth jib provided by the invention may further comprise the steps:
Make transverse slat and riser with resin and fiber;
Described transverse slat and riser are fixed.
The transverse slat and the riser of the joint arm of cloth jib provided by the invention comprise composite layer respectively, and described composite layer comprises resin and fiber, can be formed by resin and fiber composite.Owing to comprise composite layer, the joint arm of this cloth jib has following technique effect:
The first, the intensity of composite layer and armor plate strength are suitable, its density has only 1/4 of steel density, therefore, joint arm provided by the invention can be when guaranteeing that the joint arm has higher-strength, keep less weight, thereby the contradiction that exists between the prior art that is in harmonious proportion preferably joint arm intensity and the weight prevents cloth jib overload.
The second, composite layer has designability energy preferably, thereby can obtain the joint arm of predetermined structure, reduces in the prior art harmful effect that welding causes joint arm intensity; Thereby can when obtaining predetermined structure, keep joint arm intensity, be in harmonious proportion preferably in the prior art joint arm intensity with save the contradiction that exists between the arm manufacturing process;
Three, because composite material has higher fatigue performance.The joint arm that comprises composite layer also has stronger endurance life, thereby can be in harmonious proportion the contradiction that exists between existing joint arm intensity and the fatigue behaviour preferably.
Four, because composite material has good shock resistance and decay resistance, therefore, comprise that the jib of composite layer also has damping property and decay resistance preferably, thereby can prolong the application life of joint arm.
Gradual characteristic during five, owing to fracture of composite materials, the process that comprises the joint arm inefficacy of composite layer comprises a plurality of stages, comprise a series of stages such as matrix damage, cracking, interface unsticking, fibrous fracture, therefore, in use, can in time find to save the problem that arm exists, prevent trouble before it happens, improve the safety that the joint arm uses.
In further technical scheme, at least a portion fiber in the composite layer of described transverse slat forms single shaft to cloth, the joint arm that provides in this technical scheme can make full use of the anisotropic characteristics of composite material, and envoy's arm bears bigger bending load; In further technical scheme, the part fiber of the composite layer of described transverse slat forms three axial direction fibre cloth, and the joint arm that this technical scheme provides not only can bear bigger bending load, can also bear bigger torque load.
In further technical scheme, at least a portion fiber in the riser composite layer forms twin shaft to cloth; The joint arm that this technical scheme provides can bear bigger shear-type load; In further technical scheme, the part fiber of the composite layer of described riser end forms three axial direction fibre cloth, and the end of the joint arm that this technical scheme provides has higher intensity on a plurality of directions, can improve the reliability of joint arm coupling part; In further technical scheme, described riser comprises that also the joint arm riser that this technical scheme provides has bigger width by the foam sandwich laminate of composite layer parcel, thereby can improve the stability of joint arm.
In addition, in the method for the joint arm of cloth jib provided by the invention, make composite layer, form transverse slat and riser with composite layer with resin and fiber; Again with transverse slat and the fixing acquisition of riser joint arm provided by the invention; This method preparation method is simple, thereby has improved the manufacturing process performance of joint arm preferably.
Because the joint arm of cloth jib has above-mentioned technique effect, the concrete conveyer with above-mentioned joint arm also has the corresponding techniques effect.
Description of drawings
Fig. 1 is in the prior art, a kind of structural representation of cloth jib;
Fig. 2 is the structural representation of the joint arm that provides of the embodiment of the invention one;
Fig. 3 is an A-A sectional structure schematic diagram among Fig. 2;
Fig. 4 is the sectional structure schematic diagram of B-B among Fig. 2, the figure shows the structural representation of riser lateral cross section;
Fig. 5 is the lateral cross section structural representation of the joint arm that provides of another embodiment of the present invention.
The specific embodiment
According to traditional technical thought,, must form the joint arm with the steel plate welding in order to guarantee to save the reliability of arm; Along with cloth jib length increases, save increasing of arm quantity, the problem that the joint arm is overweight is more and more outstanding; In order to reduce the weight of joint arm, the technology path of taking is normally by hot-working, make steel plate have corresponding performance, improve the intensity of steel plate, reduce the thickness of steel plate, and this technology path can cause adverse effect to joint arm manufacture craft performance inevitably, reduces the fatigue performance of joint arm; And joint arm weight remains a bottleneck of restriction cloth jib development.
Different with the technology path of prior art joint arm, the present invention is from a new technology path, overcome the prejudice of making the joint arm in the prior art of steel plate, big with intensity, the composite material that density is little is made the joint arm, to be in harmonious proportion the contradiction that exists between the prior art joint arm performance, provide a kind of joint arm of cloth jib from a new angle; Not only can guarantee to save the reliability of arm work, also produce the technique effect that many existing joint arms do not have.
Describe the present invention below in conjunction with accompanying drawing, the description of this part only is exemplary and explanatory, should any restriction not arranged to protection scope of the present invention.
Please refer to Fig. 2 and Fig. 3, this figure is the structural representation of the joint arm that provides of the embodiment of the invention one.Fig. 3 is an A-A sectional structure schematic diagram among Fig. 2.
The joint arm that embodiment one provides comprises upper cross plate 221, lower cross plate 222 and two risers 210, and upper cross plate 221 and lower cross plate 222 form the transverse slat 220 of joint arm; On the longitudinal direction, upper cross plate 221, lower cross plate 222 and riser 220 extend to equidirectional; In lateral cross section, upper cross plate 221 and lower cross plate 222 horizontal-extendings, riser 210 vertical extensions.As shown in Figure 3, the dual-side of each riser 210 is fixed with upper cross plate 221 and 222 1 sides of lower cross plate respectively, and like this, upper cross plate 221, lower cross plate 222 and two risers 210 form the joint arm.As shown in Figure 3, described riser 210 dual-sides also are provided with flange 213, two flange 213 are respectively along the soffit of upper cross plate 221 and the soffit horizontal-extending of lower cross plate 222, and fix with the soffit of upper cross plate 221 and the soffit of lower cross plate 222 respectively, like this, bonding area between riser 210 and the transverse slat 220 is increased, thereby increase the reliability that is connected between riser 210 and the transverse slat 220.It is multiple to be appreciated that the mode that increases bonding area between riser 210 and the transverse slat 220 can also have, such as: can flange be set at transverse slat 220, can also on transverse slat 220 and riser 210, flange be set respectively.In addition, flange can be positioned at joint arm external surface, and optimized technical scheme is that flange is positioned on the joint arm internal chamber wall.
The joint arm that is formed by composite layer has following technique effect:
The first, the intensity of composite layer and armor plate strength are suitable, but its density has only 1/4 of steel density, and therefore, the joint arm that this example provides can be when guaranteeing that the joint arm has higher-strength, keep less weight, the contradiction that exists between the prior art that is in harmonious proportion preferably joint arm intensity and the weight.Because the joint arm has less weight; The cloth jib can comprise more a plurality of joint arms, with transmission and concrete transmission to farther, higher position, the facility that provides for concrete work.
The second,, thereby can obtain the riser 210 of predetermined structure because composite layer has designability energy preferably, can also be according to the stressed difference of joint arm different parts, envoy's arm different piece has suitable structure; This not only can help saving arm and the cooperation that is connected that saves between the arm, can also avoid in the prior art, because welding to the harmful effect that joint arm intensity causes, keeps joint arm intensity, the contradiction that exists between the prior art that is in harmonious proportion preferably joint arm intensity and the manufacturing process.
Three, because composite material has higher endurance life.The joint arm that comprises composite layer also has higher endurance life, prolongs the application life of joint arm, thereby can be in harmonious proportion the contradiction that exists between prior art joint arm intensity and the fatigue performance preferably.
Four, because composite material has good shock resistance and decay resistance, therefore, comprise that the jib of composite layer also has favorable damping performance and decay resistance, thereby can prolong the application life of joint arm.
Five, because the performance that composite material has, the process that the joint arm that this example provides lost efficacy comprises a plurality of stages, comprise a series of stages such as matrix damage, cracking, interface unsticking, fibrous fracture, therefore, in use, can in time find to save the problem that arm exists, prevent trouble before it happens, improve the safety that the joint arm uses.
In use, the joint arm affords the time spent of doing of moment of flexure load, its upper cross plate 221 produces tensile stress, lower cross plate 222 produces compressive stress, for envoy's arm has the bigger ability of bearing bending load, can also utilize the anisotropy of fiber, make upper cross plate and 221 and lower cross plate 222 have stronger tensile property and compressive property respectively.Therefore, in embodiment one, can make in upper cross plate 221 and lower cross plate 222 composite layers fiber form single shaft to cloth, promptly when making transverse slat 220, with single shaft to cloth and resin compounded formation composite layer.
Because the complexity of cloth jib action, the joint arm also will bear torque loads, upper cross plate 221 and lower cross plate 222 also can produce horizontal shear stress, in order to improve upper cross plate 221 and lower cross plate 222 anti-shear performances, can also make the part fiber in the composite layer form three axial direction fibre cloth, promptly when making transverse slat 220, with three axial direction fibre cloth and single shaft to cloth common and resin compounded formation composite layer.Optimized technical scheme is to establish three axial direction fibre cloth near upper cross plate 221 and lower cross plate 222 surfaces, makes distance between three axial direction fibre cloth and the surface less than the distance of single shaft between cloth and surface; Can make full use of three axial direction fibre cloth intensity in the horizontal like this, improve the anti-shear ability of upper cross plate 221 and lower cross plate 222, improve the peak torque that the joint arm can bear.
In use, the joint arm affords the time spent of doing of moment of flexure load, and riser 210 produces shear stress, and therefore, the fiber of riser 210 can form twin shaft to cloth; In order to improve the intensity at riser 210 two ends, the part fiber in the riser 210 two ends composite layers can also form three axial direction fibre cloth.Equally, in order to improve the anti-wear performance between the joint arm coupling part, can also metal parts be set in riser 210 appropriate locations, and form hinge hole or other structures with metal parts.Please refer to Fig. 4, this figure is the sectional view of B-B among Fig. 2.Also be provided with metal parts 211 in the riser 210, in this example, metal parts 211 is a metal cylinder, and the outer peripheral face and the composite layer of metal cylinder are fixed, and endoporus forms the hinge hole of joint arm, with hinged with other joint arms; Equally, a plurality of metal cylinder can also be set in position, to form the installing hole that driving mechanism is installed.
In order to improve the stability of joint arm, can also in riser 210, foam sandwich construction be set; As shown in Figure 5, this figure is the lateral cross section structural representation of the joint arm that provides of another embodiment of the present invention.Also be provided with foam sandwich laminate 212 in the riser 210,, improve the stability of joint arm to make full use of composite layer.The material of foam sandwich laminate 212 can be one or more combination in polyurethane, polyvinyl chloride, Polymethacrylimide and the PEI.
Be appreciated that the joint arm is not limited to said structure, can also according to actual needs the cross section of saving arm be made into other structures, can be i iron shape, two web i iron shapes, channel steel shape, Two bors d's oeuveres channel steel shape or the like.
In addition, the present invention also provides a kind of method of making the joint arm of cloth jib, and this method can be: make transverse slat and riser with resin and fiber; Then transverse slat and riser are fixed, formed the joint arm.Can be used in the above-mentioned joint arm of making though should be noted that this method, above-mentioned joint arm is not limited to adopt this method to obtain.
Wherein, making transverse slat 220 with resin and fiber specifically can be: lay suitable cloth by predetermined structure in mould, can lay three axial direction fibre cloth earlier, re-lay single shaft to cloth, re-lay three axial direction fibre cloth at last, the quantity of each cloth is by predetermined structure design decision.Form transverse slat 220 by priming by vacuum again.Can certainly form transverse slat 220 by other moulding process, such as can stick with paste by hand, injection, pultrusion, winding, mold pressing form.Equally, riser also can obtain by said method.When using vacuum infusion molding, can lay the outermost layer twin shaft earlier to cloth, lay the three axial direction fibre cloth at end and position of mounting hole place then, and it is metal parts 211 is pre-buried, then lay foam sandwich laminate 212, at installing hole and end position, foam sandwich laminate 212 preferably adopts the oblique angle transition; Laid foam sandwich laminate 212 backs and laid end three axial direction fibre cloth, the twin shaft of laying nexine at last is to cloth.
Fixedly the method for transverse slat and riser can connect with suitable high strength is gluing, can also stick with paste bound edge by hand after bonding, has suitable intensity with envoy's arm.
On the basis that above-mentioned joint arm is provided, the present invention also provides a kind of concrete conveyer, this concrete conveyer comprises concrete pump and cloth jib, and described cloth jib comprises above-mentioned joint arm, and concrete conveyer can be concrete mixer, concrete distributing frame or the like.Because joint arm provided by the invention has above-mentioned technique effect, the concrete conveyer that has this joint arm also has the corresponding techniques effect.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1, a kind of joint arm of cloth jib, described joint arm comprise transverse slat (220), riser (210); On the longitudinal direction, described transverse slat (220) and riser (210) extend in the same direction; In lateral cross section, described transverse slat (220) horizontal-extending, the vertical extension of described riser (210), described riser (210) side and transverse slat (220) are fixing, it is characterized in that, described transverse slat (220) and riser (210) comprise composite layer respectively, and described composite layer comprises resin and fiber.
2, the joint arm of cloth jib according to claim 1 is characterized in that, at least a portion fiber in the composite layer of described transverse slat (220) forms single shaft to cloth.
3, the joint arm of cloth jib according to claim 2 is characterized in that,
A part of fiber in the composite layer of described transverse slat (220) forms three axial direction fibre cloth.
According to the joint arm of each described cloth jib of claim 1-3, it is characterized in that 4, described riser (210) side also has flange (213), described flange (213) extends along transverse slat (220) surface, and fixing with transverse slat (220).
According to the joint arm of each described cloth jib of claim 1-4, it is characterized in that 5, at least a portion fiber in the composite layer of described riser (210) forms twin shaft to cloth.
6, the joint arm of cloth jib according to claim 5 is characterized in that, the part fiber of described riser (210) end composite layer forms three axial direction fibre cloth.
7, the joint arm of cloth jib according to claim 6 is characterized in that, described riser (210) end also has metal parts (211), and described metal parts (211) forms installing hole, and described metal parts (211) is fixed with composite layer.
8, the joint arm of cloth jib according to claim 7 is characterized in that, described riser (210) also comprises the foam sandwich laminate (212) by the composite layer parcel.
9, a kind of concrete conveyer comprises the cloth jib, it is characterized in that, described cloth jib comprises the joint arm of each described cloth jib of claim 1-8.
10, a kind of preparation method of joint arm of cloth jib is characterized in that, may further comprise the steps:
Make transverse slat (220) and riser (210) with resin and fiber;
Described transverse slat (220) and riser (210) is fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910179427A CN101666162A (en) | 2009-10-09 | 2009-10-09 | Joint arm of cloth arm bracket and manufacturing method thereof as well as concrete conveying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910179427A CN101666162A (en) | 2009-10-09 | 2009-10-09 | Joint arm of cloth arm bracket and manufacturing method thereof as well as concrete conveying machine |
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| CN101666162A true CN101666162A (en) | 2010-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910179427A Pending CN101666162A (en) | 2009-10-09 | 2009-10-09 | Joint arm of cloth arm bracket and manufacturing method thereof as well as concrete conveying machine |
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| CN102392539A (en) * | 2011-11-30 | 2012-03-28 | 中联重科股份有限公司 | Concrete pumping equipment, bent connecting rod device thereof and manufacturing method of bent connecting rod device |
| CN102493651A (en) * | 2011-11-30 | 2012-06-13 | 中联重科股份有限公司 | Concrete equipment and arm support thereof |
| CN102535857A (en) * | 2012-03-21 | 2012-07-04 | 三一重工股份有限公司 | Box beam, arm support, outrigger and engineering machine |
| CN102605957A (en) * | 2012-03-09 | 2012-07-25 | 三一重工股份有限公司 | Prestress reinforced boom, prestress reinforced support leg and pump truck |
| CN102733609A (en) * | 2012-06-26 | 2012-10-17 | 三一重工股份有限公司 | Arm frame, arm frame system and engineering machinery |
| CN102900235A (en) * | 2012-09-19 | 2013-01-30 | 三一重工股份有限公司 | Material distribution arm support, method for manufacturing material distribution arm support, and pumping equipment |
| WO2013020385A1 (en) * | 2011-08-05 | 2013-02-14 | 湖南三一智能控制设备有限公司 | Box-shaped structural member for engineering machinery, boom system and engineering machinery |
| CN102995901A (en) * | 2012-12-17 | 2013-03-27 | 中联重科股份有限公司 | Composite material arm support, engineering machinery and manufacturing method of composite material arm support |
| CN103057927A (en) * | 2013-01-15 | 2013-04-24 | 益阳晨光机器制造有限公司 | Hydraulic folding transfer arm for self-unloading sand carriers |
| CN103318628A (en) * | 2013-06-24 | 2013-09-25 | 益阳晨光机器制造有限公司 | Hydraulic two-section upward folded conveying arm for sand-transport self-unloading ship |
| CN103476698A (en) * | 2011-02-23 | 2013-12-25 | 西法股份公司 | Method to make arms in a composite material for the distribution of concrete and arm thus obtained |
| CN103953195A (en) * | 2014-05-06 | 2014-07-30 | 航天材料及工艺研究所 | Composite material cantilever section for cantilever crane of concrete pump truck and manufacturing method thereof |
| CN104220359A (en) * | 2012-02-14 | 2014-12-17 | 西法股份公司 | Segment of an articulated arm and articulated arm comprising said segment |
| CN105544491A (en) * | 2015-12-02 | 2016-05-04 | 上海云逸民用航空科技有限公司 | Cantilever and drilling platform |
| WO2018011271A1 (en) * | 2016-07-12 | 2018-01-18 | Schwing Gmbh | Large manipulator having a weight-optimized articulated boom |
| WO2021179546A1 (en) * | 2020-03-10 | 2021-09-16 | 三一汽车制造有限公司 | Boom and working equipment |
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2009
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| CN103476698B (en) * | 2011-02-23 | 2016-04-20 | 西法股份公司 | With the arm-piece that composite material makes the method for distributing concrete arm-piece and uses this method obtained |
| WO2013020385A1 (en) * | 2011-08-05 | 2013-02-14 | 湖南三一智能控制设备有限公司 | Box-shaped structural member for engineering machinery, boom system and engineering machinery |
| WO2013078919A1 (en) * | 2011-11-30 | 2013-06-06 | 中联重科股份有限公司 | Concrete device and arm support thereof |
| CN102392539A (en) * | 2011-11-30 | 2012-03-28 | 中联重科股份有限公司 | Concrete pumping equipment, bent connecting rod device thereof and manufacturing method of bent connecting rod device |
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| CN102995901A (en) * | 2012-12-17 | 2013-03-27 | 中联重科股份有限公司 | Composite material arm support, engineering machinery and manufacturing method of composite material arm support |
| CN102995901B (en) * | 2012-12-17 | 2014-02-19 | 中联重科股份有限公司 | Composite material arm support, engineering machinery and manufacturing method of composite material arm support |
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| CN103953195B (en) * | 2014-05-06 | 2016-01-20 | 航天材料及工艺研究所 | A kind of concrete pump truck arm composite material arm saves |
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| CN105544491A (en) * | 2015-12-02 | 2016-05-04 | 上海云逸民用航空科技有限公司 | Cantilever and drilling platform |
| WO2018011271A1 (en) * | 2016-07-12 | 2018-01-18 | Schwing Gmbh | Large manipulator having a weight-optimized articulated boom |
| CN109477339A (en) * | 2016-07-12 | 2019-03-15 | 德国施维英有限公司 | Large-scale manipulator with Weight-optimised hinged mast |
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| CN109477339B (en) * | 2016-07-12 | 2021-11-23 | 德国施维英有限公司 | Large robot with weight-optimized articulated mast |
| WO2021179546A1 (en) * | 2020-03-10 | 2021-09-16 | 三一汽车制造有限公司 | Boom and working equipment |
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