A control system and control method for an electric hoist

Abstract

The invention relates to an electric control winch control system, which includes a PLC controller, a base, a motor, a reducer, and a reel on the base. The reel includes a reel body and two Drum hub, the wire rope is wound on the drum body, the main shaft of the motor is connected to the input shaft of the reducer, the PLC controller is electrically connected to the motor, the output shaft of the reducer is connected to the drum, and it is also installed above the drum for The limit mechanism for the limit of the steel wire rope, the sleeve type rotary encoder sleeved on the output shaft of the reducer, the travel switch device installed under the reel, and the high-precision electric lifting platform for controlling the lift of the travel switch device; The shaft sleeve type rotary encoder, the limit switch device and the high-precision electric lifting platform are respectively electrically connected with the PLC controller. The electronically controlled hoist control system can intelligently detect overlapping and knotting of the wire rope on the hoist drum, and timely control the shutdown of the hoist and prevent the wire rope from going out of the drum.

Description

technical field [0001] The invention relates to the technical field of hoisting machines, in particular to an electronically controlled hoisting machine control system and a control method thereof. Background technique [0002] The hoist is a light and small lifting device that uses a drum to wind a wire rope to lift or pull heavy objects. At present, the most common is the electric control (electric) winch, such as figure 1 As shown, the hoist generally consists of a base 1, a PLC controller 6 (not shown) and a motor 2, a reducer 3, and a reel 4 arranged on the base 1, and the reel 4 includes a reel body 41 and is respectively arranged on The reel hub 42 and the reel hub 43 on the left and right sides of the reel body 41, the reel body 41 is wound with a steel wire rope 5, and the main shaft of the motor 2 is connected to the input shaft of the reducer 3 (not shown in the figure, the connection technical means It is a conventional technical means in the art), the input sh...

AI Technical Summary

Problems solved by technology

The wire ropes 5 on the reel 4 should be neatly arranged, and the wire rope 5 is wound on the reel 4 for one layer, and then the next layer; This will cause the steel wire rope 5 to overlap and knot, which is not conducive to the safe use of the steel wire rope 5

[0003] In the actual use process, when the steel wire rope is not stressed for a moment (the end of the steel wire rope pulling the heavy object is unloading the heavy object), it will loosen due to the elasticity of the steel wire rope, causing the steel wire rope to overlap, knot or go out of the drum. The continuous use of the wire rope in the case of overlapping, knotting or going out of the drum will easily lead to the accident of wire rope breaking

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