Method and device for controlling secondary hoisting of crane winch

Abstract

The invention provides a method and a device for controlling secondary hoisting of a crane winch, and the method and device provided by the invention are used for solving the problems of low power utilization efficiency, poor control effect and higher equipment manufacturing cost during control over gliding down of the secondary hoisting of the crane winch. The method comprises the following steps of: recording the pressure of a winch motor when the crane winch performs hoisting; detecting the current pressure of the winch motor when the crane winch performs secondary hoisting, and comparing the current pressure with the recorded pressure of the winch motor; and if the current pressure of the winch motor is less than the recorded pressure of the winch motor, braking a winch mechanism, and pressurizing the hoisting loop of the winch motor to enable the current pressure to be not less than the preset pressure, wherein the preset pressure is determined according to the recorded pressure of the winch motor. By utilizing the technical scheme provided by the invention, the power utilization efficiency and the control effect are improved, and the manufacturing cost of equipment is reduced.

Description

technical field [0001] The invention relates to a control method and a control device for the secondary hoisting of a crane winch. Background technique [0002] Crane is a commonly used construction machinery, and the hoist of the crane is an important part of the crane. Crane hoist mainly refers to the hoist used for hooks and luffing on mobile cranes, such as the main and auxiliary hoists of truck cranes and tire cranes, such as the hoisting hoist and luffing hoist of crawler cranes. In practical engineering applications, it is often encountered the working condition of the winch being lifted twice. The secondary hoisting of the winch mainly refers to the hoisting operation to realize the hoisting or lowering after the hoisting stops for a period of time. During the working process of the second hoisting of the winch, the phenomenon of hoisting and sliding sometimes occurs. Lifting and falling mainly means that the actual direction or speed of the winch is not controlle...

AI Technical Summary

Problems solved by technology

[0008] The main purpose of the present invention is to provide a control method and control device for the secondary hoisting of the crane winch, so as to solve the problem of low power utilization efficiency and poor control effect in the control of preventing the secondary hoisting and sliding of the crane hoist in the prior art. Poor quality and high equipment manufacturing cost

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