CN102493651B - Concrete equipment and arm support thereof - Google Patents
Concrete equipment and arm support thereof Download PDFInfo
- Publication number
- CN102493651B CN102493651B CN 201110391070 CN201110391070A CN102493651B CN 102493651 B CN102493651 B CN 102493651B CN 201110391070 CN201110391070 CN 201110391070 CN 201110391070 A CN201110391070 A CN 201110391070A CN 102493651 B CN102493651 B CN 102493651B
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- Prior art keywords
- jib
- girder
- enhancement layer
- prepreg
- fibrous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002131 composite material Substances 0.000 claims abstract description 29
- 239000000835 fiber Substances 0.000 claims abstract description 13
- 239000004744 fabric Substances 0.000 claims description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 229910052799 carbon Inorganic materials 0.000 claims description 16
- 238000000465 moulding Methods 0.000 claims description 16
- 229920005989 resin Polymers 0.000 claims description 14
- 239000011347 resin Substances 0.000 claims description 14
- 238000003475 lamination Methods 0.000 claims description 7
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 6
- 239000004917 carbon fiber Substances 0.000 claims description 6
- 210000005056 cell body Anatomy 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 239000013585 weight reducing agent Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 7
- 230000004580 weight loss Effects 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 3
- 229920006241 epoxy vinyl ester resin Polymers 0.000 description 3
- 239000002657 fibrous material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 229920006337 unsaturated polyester resin Polymers 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000002929 anti-fatigue Effects 0.000 description 2
- 229920006231 aramid fiber Polymers 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides concrete equipment and an arm support thereof. The arm support includes: a main beam made of a first fiber composite material; the reinforced layer is integrally formed by a second fiber composite material and is connected with the main beam, and the reinforced layer is arranged on at least one part of the surface of the outer side of the main beam. The arm support is completely made of composite materials, so that the weight reduction effect is improved, and the impact strength and the structural stability of the arm support are greatly improved.
Description
Technical field
The present invention relates to the concrete equipment field, more specifically, relate to a kind of concrete equipment and jib thereof.
Background technology
Concrete equipment of the prior art (as concrete mixer or concrete spreader) is widely used in the constructions work field, and the stretching, extension of the jib in concrete equipment height will determine the working range of concrete equipment, thereby the length of jib becomes the leading indicator of the functional performance of weighing concrete equipment.Yet if adopt high strength steel as structural meterials, when improving jib length, the weight of jib will improve greatly so, and this will reduce flexibility and the safety of jib greatly, and be easy to cause the overload of jib.If when guaranteeing the jib safety, improve the length of jib, just require jib to have higher intensity and lighter quality.Fiber-reinforced resin matrix compound material has higher specific strength and specific modulus, also has good anti-fatigue performance and damping property, and the designability of its structure and performance is strong, can be used for making jib.Yet, because fiber is anisotropic, its mechanical property difference axial and radially is very big, in the recombination process of fiber and resin, need design aspects such as the lay mode of the selection of material, fiber and jib structures at its working condition and stressing conditions, could guarantee its safety.
Fig. 1 shows the structural representation of composite material jib of the prior art.As shown in Figure 1, the composite layer 2 ' that jib of the prior art comprises metal inner lining 1 ' and is arranged on the metal inner lining 1 ' outside, this composite layer 2 ' comprises riser 21 ' and transverse slat 22 ', and riser 21 ' and transverse slat 22 ' form composite layer 2 ' through glueing joint.Because composite layer is that formed by splicing rather than integrated, therefore has the problem of poor stability, impact strength difference.In addition, its inner employing metal inner lining, so weight loss effect is not obvious.
Summary of the invention
The present invention aims to provide a kind of concrete equipment and jib thereof, to solve poor, the unconspicuous problem of weight loss effect of poor stability, impact strength of prior art jib.
For solving the problems of the technologies described above, according to an aspect of the present invention, provide a kind of jib of concrete equipment, comprising: the girder of being made by first fibrous composite; By the integrated enhancement Layer of second fibrous composite, enhancement Layer is connected with girder, and enhancement Layer is arranged at least a portion surface in the outside of girder.
Further, first fibrous composite is by cloth and resin molding compound or by the prepreg curing molding.
Further, cloth comprises unidirectional fibre braid and/or two-way fibrous braid and/or 3 D multi-directional fibrous braid.
Further, girder comprises interconnective first and second portion, and first and second portion surround framework, and framework comprises cavity, and girder also comprises a plurality of dividing plates, and dividing plate is arranged in the cavity and support frame.
Further, dividing plate is made by nylon or ABS resin or polystyrene or first fibrous composite.
Further, at least a portion of first is the cell body with opening, and at least a portion of second portion is cover plate, and cover plate covers on the opening of cell body.
Further, dividing plate is with respect to axis normal ground or the setting obliquely of girder.
Further, enhancement Layer is at least a portion surface in unidirectional lamination that stratiform is laid and/or two-way carbon cloth and/or the 3 D multi-directional carbon cloth outside that is molded over girder by resin solidification.
Further, enhancement Layer is unidirectional lamination prepreg that stratiform is laid and/or two-way carbon cloth prepreg and/or 3 D multi-directional carbon cloth prepreg curing molding at least a portion surface in the outside of girder.
According to another aspect of the present invention, provide a kind of concrete equipment, comprised jib, this jib is above-mentioned jib.
Jib among the present invention is made of composite material fully, therefore, has improved weight loss effect on the one hand, has improved impact strength and the structural stability of jib on the other hand greatly.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not constitute improper restriction of the present invention.In the accompanying drawings:
Fig. 1 has schematically shown the structural representation of jib of the prior art;
Fig. 2 has schematically shown the schematic diagram of a kind of jib among the present invention;
Fig. 3 has schematically shown the schematic diagram of the another kind of jib among the present invention; And
Fig. 4 has schematically shown the sectional view of jib.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As one aspect of the present invention, provide a kind of jib of concrete equipment.As Fig. 2-shown in Figure 4, jib among the present invention comprises: the girder of being made by first fibrous composite 1 and by the integrated enhancement Layer 3 of second fibrous composite, wherein, enhancement Layer 3 is connected with girder 1, and enhancement Layer is arranged at least a portion surface in the outside of girder 1 (namely can only be arranged on the surface in the outside of a part of girder, also can arrange around the surface in the whole outside of girder).Fibrous composite has intensity height, characteristics that density is little, and its specific strength is 4 times of steel.Because this jib is made of fibrous composite fully, therefore, improved weight loss effect on the one hand, impact strength and the structural stability of jib have been improved on the other hand greatly, can when guaranteeing that jib has higher-strength, keep lower weight, prevent the jib overload.Preferably, the thickness of girder is less than 5mm.
One preferred embodiment in, first fibrous composite is by cloth and resin molding compound.Wherein, cloth comprises unidirectional fibre braid and/or two-way fibrous braid and/or 3 D multi-directional fibrous braid.The fiber of cloth is one or more in glass fiber, carbon fiber, superhigh molecular weight polyethylene fibers, the aramid fiber.Resin is unsaturated polyester resin or epoxy vinyl ester resin or epoxy resin.Adopt the mode of cloth and resin molding compound, reduced the cost of first fibrous composite, and can guarantee that first fibrous material has excellent mechanical property.
Another preferred embodiment in, first fibrous composite is by the prepreg curing molding, prepreg comprises fibrage and resin.Fibrage comprises one or more in unidirectional fibre, two-way fibrous braid and the 3 D multi-directional fibrous braid.Fibrolaminar fiber is one or more in glass fiber, carbon fiber, superhigh molecular weight polyethylene fibers (molecular weight is between 1,000,000-3,000,000) or the aramid fiber.Resin is unsaturated polyester resin or epoxy vinyl ester resin or epoxy resin.Adopt the mode of prepreg curing molding, can avoid first fibrous composite with defective that generates, also can guarantee can not cause damage to first fibrous composite because of processing, reduced the consumption of material on the one hand, guaranteed also that on the other hand first fibrous material has excellent mechanical property.
Enhancement Layer 3 is to be made by carbon fiber or carbon fiber prepreg.Preferably, enhancement Layer 3 can be unidirectional lamination that stratiform is laid and/or two-way carbon cloth and/or 3 D multi-directional carbon cloth are molded over the outside of girder 1 by resin solidification this at least a portion surface.Enhancement Layer 3 also can be that unidirectional lamination prepreg that stratiform is laid and/or two-way carbon cloth prepreg and/or 3 D multi-directional carbon cloth prepreg curing molding are on this at least a portion surface in the outside of girder 1.Resin is unsaturated polyester resin or epoxy vinyl ester resin or epoxy resin.Wherein, unidirectional lamination is main load part, and it is used for providing tensile strength and the tensile modulus of jib; Two-way carbon cloth and 3 D multi-directional carbon cloth provide shear strength and the impact strength of jib, thereby above-mentioned material can improve the structural stability of jib simultaneously.Especially, can be determined lay position, type and the quantity of the carbon cloth in the enhancement Layer by the mechanical characteristic of carbon cloth, and can make enhancement Layer by one-time formed mode (can utilize girder as the mould one-shot forming), the molding mode that the enhancement Layer that makes by above-mentioned one-time formed mode glueds joint with respect to flitch of the prior art, have more excellent mechanical property, under the situation of using less material, just can reach the requirement of strength that needs.
As shown in Figure 4, girder 1 comprises interconnective first 11 and second portion 12, and first 11 and second portion 12 surround framework, and framework comprises cavity, and girder 1 also comprises a plurality of dividing plates 2, and dividing plate 2 is arranged in the cavity and support frame.Preferably, the density of dividing plate 2 is less than 3000Kg/m
3, because dividing plate has adopted the material (for example adopting nylon or ABS resin or polystyrene or first fibrous composite to make) of lightweight, thereby in the weight that has alleviated jib self, guaranteed the intensity of jib.In the prior art, the forming process of composite material need be by means of mould, and this causes prior art to add dividing plate in integrated girder inside.Girder among the present invention adopts interconnective first and second portion to constitute, can process first earlier, then dividing plate being arranged on first inside (for example couples together dividing plate and first 11 by bonding mode, can also the two be coupled together dividing plate and not completely crued first 11 integrated modes as yet), at last first and second portion are linked into an integrated entity, thereby, solved the problem that dividing plate can not be set to the inside of girder in the prior art, both guarantee the tensile strength of jib, improved impact strength and the structural stability of jib again; Further, because fibrous material is anisotropic, therefore can cause the horizontal impact strength of jib lower, after the inside to girder adds dividing plate, girder can be divided into a plurality of chambers, both can improve whole impact strength and the anti-fatigue performance of jib, can improve damping property again.In addition, the mould when girder can also serve as the enhancement Layer moulding, when the moulding enhancement Layer, the material that can use at the peripheral lay enhancement Layer of girder is to make lightweight, high-intensity jib.Preferably, dividing plate 2 is with respect to the axis normal ground (as shown in Figure 2) of girder 1 or (as shown in Figure 3) setting obliquely, and preferably, the angle of inclination is 30 degree, 45 degree or 60 degree, the dividing plate that employing is obliquely installed can be saved the consumption of composite material when guaranteeing jib intensity and stability.Preferably, dividing plate 2 is square or triangle or other shape.Preferably, girder can be by making first and second portion bonding mode, perhaps can first and second portion be solidified the all-in-one-piece mode by not completely crued resin as yet and make, perhaps also can make through behind the curing molding by not completely crued first as yet and not completely crued second branch as yet.As shown in Figure 4, preferably, at least a portion of first 11 is the cell body with opening, and at least a portion of second portion 12 is cover plate, and cover plate covers on the opening of cell body.
As another aspect of the present invention, a kind of concrete equipment is provided, comprise jib, this jib is the jib in the various embodiments described above.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the jib of a concrete equipment is characterized in that, comprising:
The girder of being made by first fibrous composite (1);
By the integrated enhancement Layer of second fibrous composite (3), described enhancement Layer (3) is connected with described girder (1), and described enhancement Layer is arranged at least a portion surface in the outside of described girder (1);
The mould of described girder (1) during as described enhancement Layer (3) moulding;
Described enhancement Layer (3) is to be made by carbon fiber or carbon fiber prepreg;
Described girder (1) comprises interconnective first (11) and second portion (12), described first (11) and described second portion (12) surround framework, described framework comprises cavity, described girder (1) also comprises a plurality of dividing plates (2), and described dividing plate (2) is arranged in the described cavity and supports described framework.
2. jib according to claim 1 is characterized in that, described first fibrous composite is by cloth and resin molding compound or by the prepreg curing molding.
3. jib according to claim 2 is characterized in that, described cloth comprises unidirectional fibre braid and/or two-way fibrous braid and/or 3 D multi-directional fibrous braid.
4. jib according to claim 1 is characterized in that, described dividing plate (2) is made by nylon or ABS resin or polystyrene or described first fibrous composite.
5. jib according to claim 1 is characterized in that, at least a portion of described first (11) is the cell body with opening, and at least a portion of described second portion (12) is cover plate, and described cover plate covers on the described opening of described cell body.
6. jib according to claim 1 is characterized in that, described dividing plate (2) is with respect to axis normal ground or the setting obliquely of described girder (1).
7. jib according to claim 1, it is characterized in that described enhancement Layer (3) is described at least a portion surface in unidirectional lamination that stratiform is laid and/or two-way carbon cloth and/or the 3 D multi-directional carbon cloth outside that is molded over described girder (1) by resin solidification.
8. jib according to claim 1, it is characterized in that described enhancement Layer (3) is unidirectional lamination prepreg that stratiform is laid and/or two-way carbon cloth prepreg and/or 3 D multi-directional carbon cloth prepreg curing molding on described at least a portion surface in the outside of described girder (1).
9. a concrete equipment comprises jib, it is characterized in that, described jib is each described jib among the claim 1-8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110391070 CN102493651B (en) | 2011-11-30 | 2011-11-30 | Concrete equipment and arm support thereof |
| PCT/CN2012/082650 WO2013078919A1 (en) | 2011-11-30 | 2012-10-09 | Concrete device and arm support thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110391070 CN102493651B (en) | 2011-11-30 | 2011-11-30 | Concrete equipment and arm support thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102493651A CN102493651A (en) | 2012-06-13 |
| CN102493651B true CN102493651B (en) | 2013-08-21 |
Family
ID=46185505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110391070 Active CN102493651B (en) | 2011-11-30 | 2011-11-30 | Concrete equipment and arm support thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102493651B (en) |
| WO (1) | WO2013078919A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493651B (en) * | 2011-11-30 | 2013-08-21 | 中联重科股份有限公司 | Concrete equipment and arm support thereof |
| CN102733609B (en) * | 2012-06-26 | 2016-01-20 | 三一汽车制造有限公司 | A kind of jib, boom system and engineering machinery |
| CN102729488B (en) * | 2012-07-05 | 2013-05-08 | 中联重科股份有限公司 | Carbon fiber composite material arm support, production method thereof and concrete pump truck comprising same |
| CN102900235B (en) * | 2012-09-19 | 2015-08-12 | 三一汽车制造有限公司 | The manufacture method of a kind of distributing arm support, distributing arm support and pumping equipment |
| 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 |
| CN103332610B (en) * | 2013-07-09 | 2016-03-09 | 武汉理工大学 | A kind of connection structure of carbon-fibre composite boom end |
| DE102014224462A1 (en) | 2014-11-28 | 2016-06-02 | Putzmeister Engineering Gmbh | Mast for a working machine and method for its production |
| DE202017104032U1 (en) * | 2017-05-31 | 2018-09-18 | Liebherr-Werk Biberach Gmbh | Structure for a crane and similar machines, as well as a crane with such a structure |
| CN111173287B (en) * | 2020-03-10 | 2024-05-28 | 三一汽车制造有限公司 | Arm support and operation equipment |
| CN111498715B (en) * | 2020-04-21 | 2022-02-25 | 三一汽车制造有限公司 | Arm support, arm support system and mechanical equipment |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2246111B (en) * | 1990-07-13 | 1994-05-04 | Samsung Heavy Ind | Dipper stick for excavator of high strength polymeric composite materials and method for manufacturing such |
| US6786233B1 (en) * | 2001-02-23 | 2004-09-07 | Schwing America, Inc. | Boom utilizing composite material construction |
| CN101666162A (en) * | 2009-10-09 | 2010-03-10 | 三一重工股份有限公司 | Joint arm of cloth arm bracket and manufacturing method thereof as well as concrete conveying machine |
| CN201531121U (en) * | 2009-10-30 | 2010-07-21 | 三一重工股份有限公司 | Connecting support, distributing arm provided with connecting support and concrete delivery machine |
| CN102493651B (en) * | 2011-11-30 | 2013-08-21 | 中联重科股份有限公司 | Concrete equipment and arm support thereof |
| CN202324648U (en) * | 2011-11-30 | 2012-07-11 | 中联重科股份有限公司 | Concrete equipment and arm support thereof |
-
2011
- 2011-11-30 CN CN 201110391070 patent/CN102493651B/en active Active
-
2012
- 2012-10-09 WO PCT/CN2012/082650 patent/WO2013078919A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013078919A1 (en) | 2013-06-06 |
| CN102493651A (en) | 2012-06-13 |
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