The electronic control system of EBH300 (A) TBM includes KXJ-400/1140EA mining explosion-proof and intrinsically safe electrical control box; CXH-12EA mining intrinsically safe operation boxes; KXH-12EA mine with intrinsically safe control box; TH-12EA mine with intrinsically safe operating boxes; XSB-24EA mining Flameproof display box; BZA1-5/36 mining Flameproof button; DGY21/24A mining Flameproof lights; GJC4 gas disconnector, remote control transmitter and receiver; explosion-proof motor; Harvey explosion-proof electro-hydraulic proportional valve; also includes a variety of sensors, including the lift cylinder, arm telescopic cylinders, magnetostrictive displacement sensor in the apron fuel tank; Dual speed sensor of rotary table, tank oil temperature, liquid level sensor; water supply pressure, flow sensors; gearbox oil temperature sensor, etc.
The core of System control is the a programmable computer controller (PCC), it combines the advantages of the PLC and industrial PC, on behalf of the automation of the most advanced control technology. Man-machine interface has a beautiful appearance, good reliability, and function of integrated controller.
In order to meet the requirements of the rock tunneling, the electronic control system to is designed with a high shock resistance. The electronic control system of EBH300 (A) obtained a high value since the TBM went down to the underground and successful run in April 2009 for its high reliability, low failure rate.
The main functions of the electromechanical control system of EBH300 (A) TBM:
1. A remote control function: all the actions of the TBM can be remote controlled. remote distance in underground tunnel is not less than 20 meters, which greatly facilitate the operation of underground workers, reduce labor intensity, and ensure safety.
2. Automatic cutting function: The sensors installed on the TBM will collect complete information about position and conditions of TBM, through the programming process, to complete the automatic cutting.
3. human-machine interface display function: the cutting profile, the track of cutting head, the running state of each motors, the current voltage value, which greatly facilitate the workers to operate.
4. Perfect protection function: conventional protection functions such as motor overload, phase short, short circuit, leakage protection; also provide the lighting system leakage, gas ultra-high, motor temperature protection. Besides, oil temperature, liquid level protection is also provided. By soft protection program to prevent crash between apron and cutting booms, to improve security.
5. fault checking and diagnosis: a large-screen LCD display, the faults of motor or system can be found very quickly, greatly improves the electrical system operability and maintainability; perfect self-diagnostic function, be able to display various failures clearly the accurately, provides comprehensive guarantee for equipment maintenance.
