An adjustable lifting bracket

Abstract

The invention discloses an adjustable lifting bracket which is mainly applied to the technical field of lifting. Two lifting arms are arranged in parallel along the horizontal direction and penetrate through a rectangular pipe; lifting lugs are respectively arranged and welded on the two lifting arms and the rectangular pipe; two diagonal members are respectively hinged with the two lifting arms and a multistage hydraulic cylinder on the top and at the bottom; the two diagonal members are hinged with each other; two round pipes are respectively inserted into another two round pipes to form two groups of round pipes; the two groups of round pipes are respectively hinged with the two lifting arms and the multistage hydraulic cylinder on the top and at the bottom; pin shafts are respectively connected between the two lifting arms and the rectangular pipe and between the two groups of round pipes; and bolt and nut fasteners are respectively hinged among the lifting arms, the diagonal members, the round pipes and the multistage hydraulic cylinder. The lengths of the lifting arms, the section height, namely moment of inertia of cross-section and the positions of the lifting lugs are adjustable, the lifting bracket can adapt to different lifting distances and the gravity center position of a lifted structure, and the lifting bracket still has enough carrying capacity under the condition that the lifting arms are lengthened.

Description

technical field [0001] The invention relates to the technical field of hoisting, in particular to an adjustable hoisting bracket for two-point hoisting. Background technique [0002] When lifting large structures, multi-point lifting is usually used, which mainly considers two factors: a) In order to prevent the structure being hoisted from being damaged due to the concentration of force on the lifting point when single-point lifting is used ; b) because it is inconvenient to arrange lifting points in the vertical direction of the center of gravity of the suspended structure, it can only be lifted at multiple points. When multi-point lifting is adopted, since there is a certain angle between the hanging ropes, the suspended structure will not only bear the vertical force of the hanging ropes, but also be subjected to the horizontal pulling force of the hanging ropes. When the horizontal pulling force is large enough to a certain extent, it will It will adversely affect the ...

AI Technical Summary

Problems solved by technology

[0003] Most of the traditional lifting brackets are fixed, with simple structure and no adjustment function. Even if it can be adjusted, the adjustment function is relatively simple. Generally, multiple lifting lugs are arranged on the lifting bracket and different lifting lugs are matched to change the lifting position. Spacing or adapting to the center of gravity of the suspended structure, usually its section height cannot be adjusted

Images