Crane and synchronous control device and method of double winches

Abstract

The invention discloses a synchronous control device of double winches, wherein a hook is connected with the double winches by a hook component, the synchronous control device comprises an angle signal acquisition part and a controller, wherein the angle signal acquisition part is used for acquiring the gesture angle of a frame of the hook component, the controller outputs a synchronous control signal to a drive mechanism / drive mechanisms of one or both of the double winches according to the gesture angle of the frame of the hook component, so as to control the gesture maintaining level of the frame of the hook component. According to the synchronous control device of the double winches, the frame of the hook component is kept at a horizontal gesture to improve the working stability of the whole machine. On the basis, the invention further provides a synchronous control method of the double winches and a crane applying the synchronous control device.

Description

technical field [0001] The invention relates to engineering machinery technology, in particular to a crane and a double winch synchronous control device and control method thereof. Background technique [0002] Based on the ever-changing construction needs, the existing crane technology has developed rapidly, and it took less than ten years to complete the leapfrog development from 100-ton products to kilo-ton products. At present, when a large crane lifts a heavy load, two winches will be used to simultaneously lift a lifting hook through a block of pulleys, so as to be suitable for the working conditions of a relatively large lifting weight. [0003] However, during the working process of the crane using double winches, affected by factors such as external force, uneven hydraulic oil flow, and wire rope winding differences, it is easy to cause the hook pulley block to work deflected, resulting in damage to the pulley and accelerated wear of the wire rope. In addition, the...

AI Technical Summary

Problems solved by technology

[0006] First of all, the initial level state before hoisting can only be observed by people, and the initial level accuracy cannot be guaranteed. If the posture of the hook assembly frame is not level before the hoisting operation, even if the hoisting out (receiving) rope amount is the same during the hoisting process , nor can it guarantee that the double winch works synchronously and the force is equal

[0007] Second, by installing an electric detection switch at the pulley to calculate the output (retraction) rope amount of the hoist at the guide pulley, there are errors in the detection and calculation process, and the control accuracy is not high

[0008] Third, it is necessary to install an induction plate with induction teeth on the outside of the pulley, the structure is complex, and the machining error directly affects the synchronization control accuracy

Images