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Crane boom and crane

A crane and jib technology, applied in the field of cranes, can solve the problems of increased manufacturing cost, high difficulty in electro-hydraulic synchronization control, complicated disassembly and assembly process, etc., and achieve the effects of improving strength, simplifying structure and reducing cost.

Active Publication Date: 2014-07-23
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, compared with other single-section jib cranes, the configuration of the whole vehicle has increased the manufacturing cost a lot, the disassembly and assembly process of each component is complicated, and the electro-hydraulic synchronization control is also very difficult.

Method used

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  • Crane boom and crane
  • Crane boom and crane
  • Crane boom and crane

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Embodiment Construction

[0027] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0028] The present invention provides a crane jib, which is composed of chords 1 and webs 2, wherein the number of said chords 1 is at least 5, and said crane surrounded by said at least 5 chords 1 The cross section of the boom is an axisymmetric polygon with at least 5 sides.

[0029] Such as Figure 4 As shown, for the truss jib of the crane, on the one hand, the size of the jib is often limited by transportation during the transportation of the crane because the shape and structure of the jib itself is fixed and cannot be stretched. The boom has sufficient strength, rigidity and stability, and it is usually necessary to increase the size of the boom to meet...

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PUM

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Abstract

The invention discloses a crane boom, which consists of chord rods (1) and a web rod (2). The crane bom is characterized in that the number of the chord rods (1) is at least 5, and the cross section of the crane boom surrounded by the at least 5 chord rods (1) is an axisymmetric polygon with at least 5 edges. Through the technical scheme, the cross section of the crane boom is a polygonal structure larger than four edges so as to improve the strength, rigidity and stability of the crane boom under the condition that the size of the crane boom is limited. Through optimal design of the structure of the crane boom in the invention, a single crane boom structure can be used to replace common double crane boom structure in some cases, thereby not only simplifying the structure of the crane, but also reducing the cost.

Description

technical field [0001] The invention relates to a crane jib and a crane, in particular to a crane jib with higher strength, rigidity and stability, and a crane with the jib. Background technique [0002] At present, the tonnage of crane design and manufacture continues to increase. The jib, as an important and directly stressed component of the crane's hoisting operation, must not only meet the lifting performance of the whole machine, the strength, stiffness and stability of the jib itself, but also meet the needs of the jib for road transportation. There are many constraints such as time and size, so the design difficulty is getting higher and higher. [0003] Usually, the jib of the crane adopts a quadrilateral space truss structure with the middle jib section equal in section and the jib sections at both ends variable in section. Among them, the chord and the web are preferably steel pipes with circular sections. For this structure, such as figure 1 As shown, in order...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C23/64
Inventor 詹纯新刘权丁慧智
Owner ZOOMLION HEAVY IND CO LTD