Fuzzy control system and control method for gear tooth type crusher

Abstract

The invention discloses a fuzzy control system and a control method for a gear tooth type crusher, wherein the control system comprises a feeding drive motor, two main motors, a hydraulic control system, a Hall sensor, a hydraulic sensor, a fuzzy controller and an alternating-current frequency converter, wherein the two main motors are respectively used for driving a pair of roll shafts to relatively rotate; the hydraulic control system is used for regulating a distance between the pair of roll shafts; the Hall sensor is used for monitoring instantaneous load of the crusher in real time; the hydraulic sensor is used for monitoring instantaneous pressure of working oil in a hydraulic cylinder in the hydraulic control system in real time; and the fuzzy controller is used for receiving signals of the Hall sensor, comparing the instantaneous load of the crusher with a preset load, logically controlling the alternating-current frequency converter according to a comparison result, also receiving signals of the hydraulic sensor, comparing the instantaneous pressure of the working oil in the hydraulic cylinder with preset pressure of the working oil and logically controlling the hydraulic control system according to the comparison result.

Description

technical field [0001] The invention relates to a fuzzy control system and control method for a toothed crusher. Background technique [0002] The gear tooth crusher is mainly used for crushing limestone, siltstone and coal and other materials with a compressive strength of ≤150MPa. Broken material. The outer surfaces of the fixed roller shaft and the movable roller shaft are equipped with crushing teeth at axial intervals. When the material enters the crushing cavity of the machine through the feeder, it is subjected to the meshing force of the crushing teeth on the rotating roller shaft, so that the material is forced to pass between the crushing teeth on the fixed roller shaft and the crushing teeth on the movable roller shaft, and is crushed at the same time. When the crushing teeth are squeezed, rolled, ground and cut, the material begins to break, and the broken small particles are thrown to the bottom of the machine through the gap between the fixed roller and the m...

AI Technical Summary

Problems solved by technology

[0003] In the process of conveying materials by the traditional apron feeding drive motor, the feeding speed can only be adjusted limitedly. When the large stones arrive, they are still feeding at high speed, which often causes the main motor to trip due to overload. When there are few stones, the feeding drive The speed of the motor is limited, which can only make the crusher wait for a long time under light load. Due to the lack of flexible and intelligent control devices (including manual control and step-switching speed regulation), the crusher is often in overload and under-load situations. Under the condition of working, so that the main motor of the crusher cannot work at the state of optimum efficiency

In addition, if a large piece of material or non-crushed material enters the crushing chamber, the hydraulic cylinder in the hydraulic control system used to adjust the gap between the movable roller and the fixed roller will widen the gap between the movable roller and the fixed roller. The gap between the movable roller shaft and the normal working position after discharge of large materials or non-broken objects. Due to the lack of flexible and intelligent control device, it is reflected that the speed of moving the movable roller shaft is slow, which aggravates the damage of the crushing teeth. wear and tear

In addition, large pieces of material can be broken into the required small particle size after being crushed again, thus reducing the efficiency of the crusher.

Images