Crane provided with folding arm and beams

A crane and girder technology, which is applied in the field of folding arm girder cranes, can solve problems such as reducing the reliability of the crane, and achieve the effect of increasing the reliability of the system and ensuring the stability.

Active Publication Date: 2013-09-25
SHANGHAI ZHENHUA HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the harsh aviation height limit conditions, the inner girder 2 of the folding arm cannot be pitched to 80 degrees, and the girder can only be fixed by the pitching wire rope winding system 6, which has an adverse effect on the service life of the pitching wire rope winding system 6, and reduces the operating time of the entire crane. Reliability in non-operating conditions such as storms

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  • Crane provided with folding arm and beams
  • Crane provided with folding arm and beams
  • Crane provided with folding arm and beams

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0030] refer to figure 2 , in this embodiment, the folding arm girder of the folding arm girder crane includes the folding arm inner section girder 2 and the folding arm outer girder 1 connected thereto. In addition, the folding arm girder crane of this embodiment also includes a working tie rod system 5, a pitching wire rope Winding system 6, sea-side trapezoidal frame 7, sea-side upper beam 8, pitching gooseneck pull rod 9. It should be noted, figure 2 The figure shows the two states of the folding arm girder, the pitch and the supine.

[0031] Wherein, the outer girder 1 of the folding arm is a truss structure, and the inner girder 2 of the folding arm can still maintain a double-box trapezoidal girder structure. While ensuring the rigidity of the girder, the t...

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Abstract

The invention discloses a crane provided with a folding arm and beams. The beams comprise a beam arranged at the inner side of the folding arm, and a beam arranged at the outer side of the folding arm. The beam arranged at the outer side of the folding arms has a truss structure. The stability of the beams in pitching is ensured. A rhomboid system is formed by hinge points of the two ends of a luffing gooseneck derrick, and hinge points of the two ends of the beam arranged at the inner side of the folding arm, so that the beam arranged at the outer side of the folding arm is always approximately parallel to horizontal line in pitching. The crane also enables rigid fixation of the beams to be realized in incomplete pitching.

Description

technical field [0001] The invention relates to a folding arm girder crane. Background technique [0002] At the wharf near the airport, there are strict height restrictions on the working and non-working states of the hoisting machinery. However, with the increase in size of container ships, a larger external lift distance and higher lifting height are required for the hoisting machinery. In wharves with strict height restrictions, knuckle-boom girder cranes are often equipped to meet the height limit requirements. [0003] refer to figure 1 , the folding jib girder of the folding jib girder crane in the prior art includes the front end girder structure 1 of the folding jib and the inner girder 2 of the folding jib, and the two are connected by a hinge point 3 . The front and rear structural sections of the folding arm girder are usually trapezoidal double box girders. Under the condition of meeting the rigidity requirements, the trapezoidal double box girder structure is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/68B66C23/78B66C23/82
Inventor 黄斌宇严云福张明海熊丁根张艺群周雪茹
Owner SHANGHAI ZHENHUA HEAVY IND
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