Crane and torque self-balancing device and method thereof

Abstract

The invention discloses a crane and a torque self-balancing device and an amplitude variation method thereof, the torque self-balancing device comprises a walking mechanism, a guide mechanism, and a synchronous mechanism; the walking mechanism is arranged on a counterweight assembly of an amplitude variation crane, the guide mechanism is vertically arranged along a turntable, and provides guidance for longitudinal movement of the center of gravity of the counterweight assembly along the turntable, the synchronous mechanism synchronizes the longitudinal movement of the center of gravity of the counterweight assembly along the turntable and amplitude-variation winding rotary movement, during amplitude variation from small amplitude to large amplitude, the center of gravity of the counterweight assembly moves toward the rear side of the amplitude variation crane, and during amplitude variation from large amplitude to small amplitude, the center of gravity of the counterweight assembly moves toward the front side of the amplitude variation crane. The overall stability and lifting performance of the crane can be improved.

Description

technical field [0001] The invention relates to hoisting machinery, in particular to a moment self-balancing device for a crane, a crane with the above-mentioned moment self-balancing device and an amplitude-changing method for the crane. Background technique [0002] At present, my country's economic growth is in an important period of investment-driven and rapid urbanization development, and the scale of fixed asset investment and infrastructure construction in the whole society is relatively large. And for a long period of time in the future, it will still maintain a rapid growth momentum. Therefore, the mobile crane market will have great market potential. [0003] For jib luffing cranes, in order to enhance the overall stability of the crane and thereby improve the performance of the crane, it is necessary to install a counterweight on the opposite side of the lifting object to balance the lifting moment. For example, the publication number is CN103708364A (hereinafte...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems existing in the prior art, the object of the present invention is to provide a moment self-balancing device for jib luffing cranes, so as to solve the gap between the hoisting moment of the complete machine and the stability of the back turning in the prior art. Finding a balance point and sacrificing the technical problem of lifting performance of the whole machine

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