Controllable counterweight system of crawler crane

Abstract

The invention discloses a controllable counterweight system of a crawler crane. The controllable counterweight system comprises main pulling plate devices, auxiliary pulling plate devices, an extending supporting frame device and a controller. A super-lift mast and a luffing device are hinged to the upper ends of the main pulling plate devices, and a small mast is hinged to the lower ends of the main pulling plate devices. A tension sensor is arranged on each main pulling plate device. Each auxiliary pulling plate device comprises an auxiliary combined pulling plate and a telescopic unit. The super-lift mast and the luffing device are hinged to the upper ends of the auxiliary combined pulling plates. The upper end of a telescopic piece of each telescopic unit is hinged to the lower end of the corresponding auxiliary combined pulling plate. The lower ends of the telescopic pieces of the telescopic units are connected with a supporting frame of the extending supporting frame device. A hinge pin sensor is arranged on each auxiliary pulling plate device. The extending supporting frame device comprises the supporting frame used for placing of a counterweight mechanism. The supporting frame is connected with a main platform of the crawler crane. Data are transmitted to the controller through the tension sensors and the hinge pin sensors. The extending and retracting of the telescopic pieces are controlled by the controller. According to the controllable counterweight system of the crawler crane, the safety and reliability of the crawler crane are improved.

Description

technical field [0001] The invention belongs to the technical field of crawler cranes, and in particular relates to a controllable counterweight system of crawler cranes. Background technique [0002] At present, the 350-ton to 1000-ton crawler cranes on the market all use superlift counterweight mechanism to increase the rear moment. The rear host cannot move or rotate, and has poor performance in terms of efficiency and reliability. From the prior art, for the design of medium and large tonnage, the structure, control and method of increasing the rear moment have become bottlenecks. Contents of the invention [0003] The purpose of the present invention is to provide a controllable counterweight system for crawler cranes. This mechanism can replace the traditional super-lifting counterweight mechanism, solve the difficult problem of difficult material selection and high price for pull plates in the market, and is beneficial to improve the hoisting of crawler cranes. , ...

AI Technical Summary

Problems solved by technology

[0002] At present, the 350-ton to 1000-ton crawler cranes on the market all use superlift counterweight mechanism to increase the rear moment. The rear host cannot move or rotate, and its performance is poor in terms of efficiency and reliability.

From the perspective of existing technology, for the design of medium and large tonnage, the structure, control and method of increasing the rear moment have become bottlenecks

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