Method, device and system for synchronous control of winches, and multi-winch single-hook type crane

Abstract

The invention relates to the technical field of craning machinery, and discloses a method, a device and a system for synchronous control of the winches of a multi-winch single-hook type crane, and the multi-winch single-hook type crane, which are used for improving the reliability and the safety in synchronous control of the winches. The method for synchronous control of the winches comprises the following steps of: obtaining present winching speed signals detected by a plurality of sensors on each winch respectively; aiming at each sensor, determining a longitudinal ratio score according to the present winching speed signal and the winching speed signal in the last time; aiming at every two sensors, determining a transversal ratio score according to the respective present winching speed signals; aiming at each sensor, calculating the sum of the corresponding longitudinal ratio score and each transversal ratio score, so as to obtain a total score sum; and in the case that the corresponding total score sums of the two sensors in the plurality of sensors of the plurality of winches are unequal, outputting sensor fault prompt information.

Description

technical field [0001] The invention relates to the technical field of hoisting machinery, in particular to a hoisting synchronous control method, device and system for a multi-hoisting single-hook type crane and a multi-hoisting single-hook type crane. Background technique [0002] The multi-hoist single-hook crane controls the lifting of a single hook through multiple hoists, and is usually a large-tonnage crane. In order to ensure that the wire ropes of multiple winches are automatically synchronized during the movement of the hook (that is, they move in concert to keep their respective speeds in line with actual needs), it is usually necessary to detect the working speed of each winch. like figure 1 As shown, in the existing hoist synchronous control system, each drum of hoist 12 is provided with a sensor 13 for detecting the rotational speed of the drum, and the control device (not shown in the figure) communicates with each sensor 13 signal According to the rotation ...

AI Technical Summary

Problems solved by technology

[0003] The defect of the existing technology is that the operator cannot know the fault state of the sensor in time. If the sensor on a winch fails, the control device will not be able to obtain the exact working speed of the winch, which will cause the winch to be synchronized. The control fails, resulting in a synchronization difference between multiple winches, so that the hook cannot be in a balanced state, and in severe cases, it will also lead to safety accidents, poor reliability and safety

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