Intelligent control system for automatic cutting formation of tunneling

Abstract

The invention relates to an intelligent control system for automatic cutting formation of tunneling, comprising a space position detecting device of a cutting head, a current sensor of a cutting motor, a programmable controller, a proportional amplifier and a load-sensitive proportional multi-path reversing valve set, wherein the programmable controller is used for carrying out arithmetical operation on signals collected by the space position detecting device of the cutting head to control the cutting head to move along the set track in the stated range of a tunnel so that a regular section is cut. The current sensor of the cutting motor is used for collecting the current signals of the cutting motor to compare with rated current, the opening sizes of the valve ports of the load-sensitive proportional multi-path reversing valve set is controlled by the programmable controller to correspond to the constant-power pulling speed of the cutting motor with different coal properties so that the automatic formation control on the section of the tunnel and the intelligent control on the constant-power pulling speed of the cutting motor are realized. The invention is suitable for automatic cutting formation of the section when the tunnel of a coal mine and an engineering tunnel are tunneled by a cantilever type tunneling machine.

Description

technical field [0001] The invention relates to a tunnel boring machine in the field of coal mine machinery, in particular to an intelligent control system for automatic cutting and forming of tunneling for controlling the tunnel boring machine. It uses a programmable controller to perform mathematical operations on the signal collected by the cutting head spatial position detection device, controls the cutting head to move according to the set trajectory within the range specified in the coal roadway operation rules, and automatically cuts out a regular section; cutting The motor current sensor collects the current signal of the cutting motor and compares it with the rated current, and controls the load-sensitive proportional multi-way reversing valve group valve opening through the programmable controller to automatically adjust the cutting head speed steplessly to ensure the cutting Cutting motor constant power operation; and become a very practical and progressive new desi...

AI Technical Summary

Problems solved by technology

However, the electromagnetic valve in the control system can only realize two speed regulation functions, and cannot realize stepless speed change, and cannot realize automatic stepless speed regulation of the cutting head traction speed corresponding to different coal quality changes, thereby ensuring cutting Motor running at constant power

[0007] Although the above-mentioned existing roadheader automatic control system can provide the user with a roadheader automatic control system with intelligent control effect, it is indeed progressive, but in actual use, it is found that there are some shortcomings in its structure, resulting in The roadheader automatic control system failed to achieve the best use effect in practical application, and its shortcomings can be summarized as follows:

[0008] 1. The existing automatic control system of the roadheader cannot automatically cut into the required shape section

[0009] 2. The existing automatic control system of the roadheader cannot realize the stepless speed regulation of the cutting head corresponding to different coal qualities, so it cannot guarantee the constant power operation of the cutting motor

[0010] 3. The existing roadheader automatic control system cannot realize the above two functions at the same time

[0011] This shows that the above-mentioned existing roadheader automatic control system obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently

In order to solve the problems existing in the automatic control system of the roadheader, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and there is no suitable structure for general products to solve the above problems. This is obviously a problem that relevant industry players are eager to solve

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