Control method, control system and controller for super-lift winch of crane

Abstract

The invention discloses a control method, control system and controller for the super-lift winch of a crane and belongs to the technical field of engineering machinery. The control method specificallycomprises the following steps that: the real-time length L1 of a main arm and the real-time rope unwinding amount L2 of a winding drum are obtained; the target rope unwinding amount L2'of the windingdrum is calculated according to the real-time length L1 of the main arm, and a length relation l2 between the preset length l1 of the main arm and the preset rope unwinding amount l2 of the winding drum during the stretch and contraction of the main arm and synchronous winding and unwinding of the winding drum, wherein the length relation l2 can be indicated that an equation that l2=f1 (l1); andwhen the target rope unwinding amount L2'of the winding drum is not equal to the real-time rope unwinding amount L2 of the winding drum, the real-time rope unwinding amount L2 is adjusted to be the target rope unwinding amount L2 '. With the control method adopted, the retracting and releasing length of the super-lift winch can be effectively determined on the premise that the telescopic length ofthe main arm is determined, so that the synchronous movement of the winch and the main arm can be realized, and the safety performance of the crane is ensured.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a control method, a control system and a controller for a super-lift winch of a crane. Background technique [0002] With the process of modern industrialization, more and more large-volume, heavy-weight components and devices require cranes for installation, disassembly, and transfer. Truck cranes are more and more used in various occasions due to their small footprint, flexible transition, and fast construction speed. [0003] As an important mechanism of the super-large tonnage barrel jib crane, the superlift can greatly reduce the deflection and side bending of the telescopic boom, and greatly improve the lifting capacity of the equipment. [0004] The superlift is installed on the basic section of the main boom, and there are two basically symmetrical masts, which are placed on the left and right of the main boom. Each mast is equipped with a reel that is wou...

AI Technical Summary

Problems solved by technology

In the process of extending the arm, if the rope is released too slowly, the main arm will be pulled back and deformed too much or even broken; if the rope is released too slowly, the winch rope will swing down

In the process of retracting the arm, if the rope is retracted too slowly, the hoisting rope will swing down; if the rope is retracted too quickly, the main arm will be pulled back and deformed too much or even broken

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