System and method for automatic deviation correction of door crane

Abstract

The invention relates to a correction system and method mainly used for a large-span gantry crane and particularly relates to an automatic correction system and method for traveling of a gantry crane. The automatic correction system comprises an encoder group, a programmable controller, a traveling motor for driving traveling mechanisms of rigid legs and flexible legs of the gantry crane and a frequency converter for controlling the traveling motor, wherein the encoder group is connected with the programmable controller, and the frequency converter is connected with the traveling motor. Therefore, the automatic correction system has the advantages that (1) the automation degree is high, and automatic correction can be realized without need of artificial intervention; (2) the error correction accuracy is high, the deviation degree can be accurately detected by utilizing the encoder group, the traveling motor is driven by the frequency converter to carry out accurate adjustment, simultaneously, the slipping phenomenon of the low-speed ends of traveling wheel groups can be found in time, and corresponding adjustment can be made; and (3) the application scope is wide, the deformation of a traveling track of a cart and the whole deflection of the cart can be judged and error operation can be prevented.

Description

technical field [0001] The invention relates to a deviation correction system and method, which are mainly used for large-span door cranes, and in particular to an automatic deviation correction system and method for door cranes. Background technique [0002] Gantry cranes are important equipment in the production and transportation of construction, factories, ports and terminals. Due to the structural rigidity of the gantry crane, there must be a deviation in the running speed of the door legs on both sides during the traveling process of the cart. When this deviation accumulates to a certain extent, it will cause the wheels of the cart to squeeze against the side wall of the cart track, resulting in "gnawing". track" happens. Severe "gnawing rails" damage the wheels or rails; the wheels of carts climbed onto the rails, causing safety accidents and seriously affecting normal production. For this reason, the automatic deviation correction technology of gantry crane carts m...

AI Technical Summary

Problems solved by technology

This method cannot make judgments on the deformation of the traveling track of the cart and the overall deviation of the cart to one side, which is prone to misoperation and seriously affects the correction effect

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