CN102030274A - Jib arm structure of lorry-mounted crane - Google Patents
Jib arm structure of lorry-mounted crane Download PDFInfo
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- CN102030274A CN102030274A CN 201010612174 CN201010612174A CN102030274A CN 102030274 A CN102030274 A CN 102030274A CN 201010612174 CN201010612174 CN 201010612174 CN 201010612174 A CN201010612174 A CN 201010612174A CN 102030274 A CN102030274 A CN 102030274A
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Abstract
The invention relates to a jib arm structure of a lorry-mounted crane. The jib arm is formed by bending a steel plate into a structure of which the cross section is a polygon in one step by means of a bending machine, wherein two short sides corresponding to an opening of the polygon are connected with each other by welding, so that long sides and the short sides of the polygon are connected into a whole. By using the jib arm having a one-welding seam structure, the invention has the advantages of less possible torsional deformation and more reasonable stressed state. The geometric accuracy of the jib arm can be effectively controlled in the bending process, welding deformation has minimal influence on the structural dimension precision of the jib arm, the product quality control cost is lowered, the product quality is ensured, the production efficiency is improved, and the labor intensity of workers is reduced. Besides, the structural strength of the jib arm is obviously improved.
Description
Technical field
The invention belongs to the weight-lifting equipment technical field, relate to a kind of lorry-mounted crane boom structure that can improve intensity, the rigidity of lorry-mounted crane arm and reduce torsion resistance.
Background technology
Existing lorry-mounted crane arm all is that the hexagon boom structure is adopted in the cross section, is that the assembly by two U fonts is welded, and needs corresponding two limits of welding, thereby two weld seams are arranged.This kind boom structure is all existing great defective for blanking bending, welding etc.: the one, aspect the bending: form because the arm of this kind structure is welded together by two bending plates, so it is quite high to the accuracy requirement of bending, and two bending plates can not be converted into striking resemblances, or the deviation of width aspect, or the deviation of angle aspect, precision is wayward; The 2nd, the welding aspect: because the existence of various deviations has brought great trouble for welding work, not only production efficiency is low, and labor strength is big, and product design can not get guaranteeing, and welding deformation is bigger, and arm is torsional deflection very easily.
Summary of the invention
For overcoming above-mentioned technical disadvantages, the present invention adopts the assembly that once folds moulding, only needs the arm that weld seam just can be welded, and has improved intensity, the rigidity of arm and has reduced torsion resistance.
The present invention solves the technical method that its technical matters adopts: a kind of lorry-mounted crane boom structure, by angle bender steel plate once is bent into the crane arm that cross-sectional plane is a polygonized structure, by being weldingly connected, polygonal long limit and minor face are fused between two corresponding minor faces at polygonal-shaped openings place.
Described lorry-mounted crane boom structure is by angle bender steel plate once to be bent into the crane arm that cross-sectional plane is a hexagonal structure, by being weldingly connected, make hexagonal long limit and minor face fuse between two corresponding minor faces at hexagonal apertures place.
The weld seam at the described place of being weldingly connected is to utilize frock that the weld seam mouth is closed up, and it is correct to measure and proofread and correct each size, and spot welding is firm.
The method for making of described lorry-mounted crane boom structure is: at first according to the size of each arm, calculated the development size and the blanking of hexagon arm; According to the size of hexagon arm, calculate the bending size on minor face and long limit and draw bending line then; Press the line bending at last on the large-sized numerical control angle bender, roll over two minor faces earlier, last cutter is middle, and arm is closed up, and pulls out the arm of rolling well from angle bender.
The invention has the beneficial effects as follows: the arm that has adopted a welding line structure, be difficult for torsional deflection, the arm geometric accuracy just can effectively be controlled by the bending operation, welding deformation is minimum to the influence of boom structure dimensional accuracy, the production quality control cost reduces, and product design is guaranteed, and has improved production efficiency, reduced working strength of workers, the structural strength of arm itself also significantly improves.
Description of drawings
Fig. 1 is a cross-sectional structure scheme drawing of the present invention.
Among the figure: the long limit of 1-, 2-minor face, 3-weld seam.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
Referring to Fig. 1, a kind of lorry-mounted crane boom structure, by angle bender steel plate once is bent into the crane arm that cross-sectional plane is a polygonized structure, by being weldingly connected, polygonal long limit 1 and minor face 2 is fused between two corresponding minor faces 2 at polygonal-shaped openings place.
In the present embodiment, the lorry-mounted crane boom structure is by angle bender steel plate once to be bent into the crane arm that cross-sectional plane is a hexagonal structure, by being weldingly connected, make hexagonal long limit 1 and minor face 2 fuse between two corresponding minor faces 2 at hexagonal apertures place.Weld seam 3 is to utilize frock that the weld seam mouth is closed up, and it is correct to measure and proofread and correct each size, and spot welding firmly gets final product.
The precision of arm of the present invention is by bending operation control, and the influence of being welded reduces greatly, and from the stressing conditions analysis of arm, arm is for being subjected to the moment of flexure girder construction, one side the cross section be subjected to tensile stress, Yi Bian the correspondence compression chord.Weld seam is to the tensile stress sensitivity, and compressive strength is higher, so a weld seam arm when structural arrangement, is arranged in one side of compression chord with weld seam, compares the boom structure of existing two welding line structures, has improved the bending strength and the strength at repeated alternation of arm greatly.
During concrete the making,, calculated the development size and the blanking of hexagon arm at first according to the size of each arm; According to the size of hexagon arm, calculate the bending size and the setting-out (bending line) on minor face and long limit then; Press the line bending at last on the large-sized numerical control angle bender, roll over two minor faces earlier, last cutter is middle, and arm is closed up, and pulls out the arm of rolling well from angle bender and gets final product.
Claims (4)
1. lorry-mounted crane boom structure, it is characterized in that: steel plate once is bent into the crane arm that cross-sectional plane is a polygonized structure by angle bender, by being weldingly connected, polygonal long limit and minor face are fused between two corresponding minor faces at polygonal-shaped openings place.
2. lorry-mounted crane boom structure as claimed in claim 1, it is characterized in that: described lorry-mounted crane boom structure is by angle bender steel plate once to be bent into the crane arm that cross-sectional plane is a hexagonal structure, by being weldingly connected, make hexagonal long limit and minor face fuse between two corresponding minor faces at hexagonal apertures place.
3. lorry-mounted crane boom structure as claimed in claim 1 or 2 is characterized in that: the weld seam at the described place of being weldingly connected is to utilize frock that the weld seam mouth is closed up, and it is correct to measure and proofread and correct each size, and spot welding is firm.
4. make the method for lorry-mounted crane boom structure as claimed in claim 1 or 2, it is characterized in that:, calculated the development size and the blanking of hexagon arm at first according to the size of each arm; According to the size of hexagon arm, calculate the bending size on minor face and long limit and draw bending line then; Press the line bending at last on the large-sized numerical control angle bender, roll over two minor faces earlier, last cutter is middle, and arm is closed up, and pulls out the arm of rolling well from angle bender.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010612174 CN102030274A (en) | 2010-05-24 | 2010-12-30 | Jib arm structure of lorry-mounted crane |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020210919 | 2010-05-24 | ||
| CN201020210919.0 | 2010-05-24 | ||
| CN 201010612174 CN102030274A (en) | 2010-05-24 | 2010-12-30 | Jib arm structure of lorry-mounted crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102030274A true CN102030274A (en) | 2011-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010612174 Pending CN102030274A (en) | 2010-05-24 | 2010-12-30 | Jib arm structure of lorry-mounted crane |
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| CN (1) | CN102030274A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249170A (en) * | 2011-07-15 | 2011-11-23 | 徐州徐工特种工程机械有限公司 | Main jib structure for fork installing machine |
| CN102502426A (en) * | 2011-10-20 | 2012-06-20 | 中联重科股份有限公司 | Crane boom and crane |
| CN103241663A (en) * | 2013-05-07 | 2013-08-14 | 三一帕尔菲格特种车辆装备有限公司 | Crane, and telescopic arm and knuckle arm thereof |
| CN105584943A (en) * | 2016-01-15 | 2016-05-18 | 三一帕尔菲格特种车辆装备有限公司 | Crane boom and crane |
| CN110733979A (en) * | 2019-11-19 | 2020-01-31 | 姚运文 | Upper side light load single welding seam crane boom |
| CN111390498A (en) * | 2020-03-11 | 2020-07-10 | 武汉理工大学 | Lightweight operation vehicle arm and forming method |
| CN111650645A (en) * | 2020-06-16 | 2020-09-11 | 中油奥博(成都)科技有限公司 | Variable offset VSP curved line correction processing method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11158908A (en) * | 1997-12-02 | 1999-06-15 | Kubota Corp | Boom structure of working machine and production of boom member |
| JP2004149268A (en) * | 2002-10-31 | 2004-05-27 | Tadano Ltd | Boom section for telescopic boom |
| CN101269783A (en) * | 2007-03-23 | 2008-09-24 | 宝山钢铁股份有限公司 | Process for manufacturing suspension arm of crane |
| JP4265040B2 (en) * | 1999-08-13 | 2009-05-20 | 株式会社加藤製作所 | Multistage boom |
-
2010
- 2010-12-30 CN CN 201010612174 patent/CN102030274A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11158908A (en) * | 1997-12-02 | 1999-06-15 | Kubota Corp | Boom structure of working machine and production of boom member |
| JP4265040B2 (en) * | 1999-08-13 | 2009-05-20 | 株式会社加藤製作所 | Multistage boom |
| JP2004149268A (en) * | 2002-10-31 | 2004-05-27 | Tadano Ltd | Boom section for telescopic boom |
| CN101269783A (en) * | 2007-03-23 | 2008-09-24 | 宝山钢铁股份有限公司 | Process for manufacturing suspension arm of crane |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249170A (en) * | 2011-07-15 | 2011-11-23 | 徐州徐工特种工程机械有限公司 | Main jib structure for fork installing machine |
| CN102249170B (en) * | 2011-07-15 | 2013-06-12 | 徐州徐工特种工程机械有限公司 | Main jib structure for fork installing machine |
| CN102502426A (en) * | 2011-10-20 | 2012-06-20 | 中联重科股份有限公司 | Crane boom and crane |
| CN103241663A (en) * | 2013-05-07 | 2013-08-14 | 三一帕尔菲格特种车辆装备有限公司 | Crane, and telescopic arm and knuckle arm thereof |
| CN105584943A (en) * | 2016-01-15 | 2016-05-18 | 三一帕尔菲格特种车辆装备有限公司 | Crane boom and crane |
| CN110733979A (en) * | 2019-11-19 | 2020-01-31 | 姚运文 | Upper side light load single welding seam crane boom |
| CN111390498A (en) * | 2020-03-11 | 2020-07-10 | 武汉理工大学 | Lightweight operation vehicle arm and forming method |
| CN111650645A (en) * | 2020-06-16 | 2020-09-11 | 中油奥博(成都)科技有限公司 | Variable offset VSP curved line correction processing method and device |
| CN111650645B (en) * | 2020-06-16 | 2022-05-20 | 中油奥博(成都)科技有限公司 | Variable offset VSP curved line correction processing method and device |
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Application publication date: 20110427 |