Balancing weight mechanism of engineering machinery, engineering machinery and shifting method of balancing weight mechanism

Abstract

The invention discloses a counterweight mechanism, engineering machinery and a counterweight mechanism displacement method. The balance weight mechanism comprises a base frame, a balance weight, a bracket, a swing rod and a telescopic mechanism. The base frame is installed on the rear side of a rotary platform of the engineering machine. The bracket is used for bearing the balance weight, and one end of the bracket is rotatably connected to the base frame. The first end of the swing rod is rotatably connected to the base frame. The first end of the telescopic mechanism is rotatably connected to the bracket, and the second end of the telescopic mechanism is rotatably connected to the second end of the swing rod. The first end and the second end of the telescopic mechanism are telescopically arranged to drive the bracket and the swing rod to rotate relative to the base frame so as to adjust the position of the balance weight. According to the scheme, the rotating range of the bracket is enlarged by arranging the swing rod, and therefore the gravity center adjusting range of the balance weight is enlarged.

Description

technical field [0001] The present application relates to the field of construction machinery, in particular to a counterweight mechanism of construction machinery, construction machinery and a method for displacing the counterweight mechanism. Background technique [0002] Cranes are widely used in the hoisting operations of wind farms, large petrochemical projects, large bridges and other projects, and are also increasingly used in the construction of cities and factories. Customers have more and more requirements for the performance and space adaptability of cranes. high. In order to improve the lifting performance of the crane, it is necessary to continuously increase the weight of the counterweight to increase the anti-overturning moment of the crane, which results in continuous increases in manufacturing and transportation costs, and more importantly, limits the working conditions of the crane in many small working spaces. [0003] In the prior art, a fixed balance we...

AI Technical Summary

Problems solved by technology

In order to improve the hoisting performance of the crane, it is necessary to continuously increase the weight of the counterweight to increase the anti-overturning moment of the crane, thus causing the continuous increase of manufacturing and transportation costs, and more importantly, limiting the working conditions of the crane in many small working spaces

[0003]In the prior art, fixed counterweights are generally used, and because their positions are relatively fixed, they cannot be adjusted according to the working environment during the operation

In addition, there are some counterweights that use horizontal slide rail mechanisms, but their structures are more complex, their reliability is poor, and the degree of displacement of the counterweight is limited.

Images