Cantilever type crane

Abstract

The invention provides a cantilever type crane. The cantilever type crane comprises a stand column assembly and a cantilever assembly; the stand column assembly comprises a fixed stand column and a rotary stand column which can rotate relatively; the cantilever assembly comprises a first cantilever and a second cantilever; the near end of the first cantilever is fixed to the top end of the rotary stand column; the far end of the first cantilever is rotationally connected with the near end of the second cantilever; and a hoisting part is fixed at the far end of the second cantilever. By means of the above structure, when the cantilever type crane is applied to the vicinity of a large-scale structure, the cantilever type crane can still conduct hoisting under the condition that the cantilever type crane does not interfere with the large-scale structure through cooperation of the fixed stand column and the rotary stand column and cooperation of the two rotating shafts of the first cantilever and the second cantilever; except for the working range overlapped with the large-scale structure, the working blind area of the cantilever type crane can be effectively reduced, even no working blind area exists, and the hoisting requirement near the large-scale structure is met.

Description

Technical field [0001] The present invention relates to the field of lifting mechanical technology, and more particularly to a cantilever crane. Background technique [0002] The cantilever cranes used in the prior art sea platform typically include components such as columns, cantilever and hooks, and the column is fixed at sea platform, and the cantilever can rotate relative to the column, and the hook is moved along the cantilever by electric hoist, etc. At the same time, the driver can drive the hook or increased to achieve lifting function, the operating range of the cantilever crane is a circular shape with a hollow center. [0003] When there is a lifting demand in the vicinity of some large structures of the sea platform, the cantilever of the cantilever crane will interfere with the large structure, resulting in a reduction in rotation, and the overall operating range is reduced, and it is impossible to meet the hanging demand, for example The cantilever crane near the t...

AI Technical Summary

Problems solved by technology

[0003] When there is a lifting demand near some large structures on the offshore platform, the cantilever of the cantilever crane will interfere with the large structure, resulting in a reduction in its rotatable range and overall working range, which cannot meet the lifting requirements. The cantilever crane near the tower door platform. The tower is a large cylindrical structure. When it is tangent to the tower, it will interfere with the tower and cannot continue to rotate, resulting in a certain working blind area of ​​the cantilever crane near the tower, which cannot meet the lifting requirements of the corresponding position

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