A special spreader for hoisting the jib frame of a large crawler crane
A crawler crane and spreader technology, applied in the field of hoisting and spreader, can solve the problems of long time consumption and increased workload, and achieve the effects of reducing personnel operation, improving hoisting efficiency and improving operation safety.
Active Publication Date: 2017-09-22
CHINA NUCLEAR IND MECHANICAL ENG
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Problems solved by technology
This boom hoisting method increases the workload and takes a long time
Method used
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[0011] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only parts related to the present invention are shown in the drawings but not all content.
[0012] The special spreaders for hoisting the jib of large crawler cranes are all designed with steel structure, and the parts are connected by pins, bolts or welding. This spreader is designed for lattice jibs. During the hoisting process, the two curved hooks of the spreader clamp the chords on both sides of the truss arm. The opening angle of the hook is controlled by the adju...
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The invention discloses a lifting appliance special for lifting of a large crawler crane boom. The two ends of a cross beam are each sleeved with a cross beam web plate. Lifting hook web plate locating pin shafts of lifting hook web plates are arranged in strip holes of the cross beam web plates in a penetrating manner and can slide. Lifting hooks are fixed to the bottoms of the lifting hook web plates through lifting hook pin shafts and can rotate around the lifting hook pin shafts. An operation handle is arranged in the middle of each lifting hook web plate and can rotate. One end of each steel wire rope is fixed to a rotary wheel of the corresponding operation handle, and the rotary wheels rotate along with the operation handles. The other end of each steel wire rope is wound around a pulley to be fixed to the bent arc of the side face of the corresponding lifting hook. According to the lifting appliance, semi automation of boom clamping is achieved, and compared with a traditional clamping manner, the clamping time is greatly shortened, and the lifting efficiency is improved. Meanwhile, personnel operation is reduced, and work safety is improved.
Description
technical field [0001] The invention relates to the technical field of hoisting gear and hoisting, in particular to a hoisting gear specially used for hoisting the arm frame of a large crawler crane. Background technique [0002] With the development of the construction machinery industry, the maximum tonnage of crawler cranes has reached 4,000 tons. For large-tonnage cranes, the precise installation of the boom is a prerequisite for ensuring the normal operation of the crane. The traditional jib installation method mostly uses ropes to fix the jib, and the hook completes the installation method of lifting. This boom hoisting method increases the workload and takes a long time. Contents of the invention [0003] The purpose of the present invention is aimed at the design of the truss-type jib of a crawler crane, to ensure the reduction of manpower during the installation of the jib, to realize automatic fixing of the jib, and to shorten the hoisting cycle. [0004] The i...
Claims
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IPC IPC(8): B66C1/10
CPCB66C1/10
Inventor 陈慧川吴宇鹏姜志建金星池
Owner CHINA NUCLEAR IND MECHANICAL ENG