Crane and movable-type balance weight mechanism thereof

Abstract

The invention relates to the technical field of engineering machinery, and discloses a crane and a movable-type balance weight mechanism thereof. The movable-type balance weight mechanism comprises a first power transmission piece, a deflection oil cylinder and a connecting frame which is fixedly connected with a balance weight block; two ends of the first power transmission piece are respectively connected with a winding box and the connecting frame; two ends of the deflection oil cylinder are respectively connected with a rotary table / the winding box and the connecting frame. According to the movable-type balance weight mechanism for the crane provided by the embodiment of the invention, the balance weight (block) moves under the driving of the deflection oil cylinder so that the center of gravity of a finished vehicle changes, a hoisting range under the same working condition in a working condition table can be increased without stopping the operation and moving the finished vehicle, not only is the operation efficiency improved, but also the labor intensity of operators is relieved.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a mobile counterweight mechanism for a crane. The present invention also relates to a crane with the above-mentioned mobile counterweight mechanism. Background technique [0002] Truck cranes are widely used in lifting operations and hoisting tools in industrial and mining enterprises, construction sites, ports, oil fields, railways, warehouses and freight yards. With the rapid development of the national economy, the role of truck cranes in various industries is also increasing, and the economic leverage is increasing day by day. With the increasing application of truck cranes, customers have higher and higher requirements for the lifting performance and stability of the whole vehicle. [0003] At present, there are two ways to increase the lifting capacity of a truck crane under the same working condition: one way is to stop the work first, retract the outrigger...

AI Technical Summary

Problems solved by technology

[0003] At present, there are two ways to increase the lifting capacity of a truck crane under the same working condition: one way is to stop the work first, retract the outriggers, move the whole vehicle to a suitable position, and then extend the outriggers, and then Carry out normal hoisting work, this method not only reduces the efficiency of the whole vehicle operation, but also increases the fatigue of the operator; another way is to increase the counterweight, but because the increase of the counterweight is limited by the work table, and when it is increased to the maximum When counterweighting, it can only be solved by moving the whole vehicle

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