CN2331702Y - Breakdown display and protecting control device for mining excavating machine - Google Patents

Abstract

The utility model relates to a device displaying, protecting and controlling faults for a mining excavator, solving the problems of no self-diagnosis on equipment faults and complicated auxiliary motor control of a large electric excavator. An input interface circuit of a PLC programmable controller is connected with 16 input signals. A CPU supported by programs is used for sampling, scanning and calculation. Results control 22 trouble signal lights and the operation of the auxiliary motor through the output interface circuit. The utility model with the advantage of simple and convenient operation can raise the running efficiency of equipment and can be used on excavators.

Description

The fault of mine excavator shows and the protection control device

The fault that the utility model relates to a kind of large-sized mining dredger shows and the protection control device.

Excavator is a kind of main equipment of exploiting surface mine; work under bad environment; most of electric fixtures all concentrates in the narrow canopy; the auxiliary motor of excavator is many; the necessary dedusting of machine; need ventilation fan and purify blower fan; braking will have air compressor and electromagnetic valve etc. with pneumatic means, and the machine reduction box must have oil pump and selfoiling system, the direct current generator Fraquent start; must there be blower fan to force cooling; in addition, the excavator power supply is three phase 6 k v or 3kv high voltage source, and control system has 380 volts of accessory power supplys; 220 volts of DC control supplies are arranged; also have the light current of control system, the factor of so huge device fails is a lot, often takes place as earth fault; be provided with ground protection; can't judge cause of accident after the power failure, bring very big difficulty, have a strong impact on productivity ratio to maintenance; most of at home at present mine excavator rate of attendance has had a strong impact on economic benefit of enterprises all less than 80%.

The purpose of this utility model is to provide the fault of the mine excavator that stand-by motor programme-control of a kind of using PLC Programmable Controller excavator and fault diagnosis show to show and the protection control device.

The utility model is finished with following mode: the fault of mine excavator shows and the protection control device, it includes central processing unit CPU and output interface circuit IC1 and output interface circuit IC2, IC3, IC4 forms the PLC programmable controller, it is characterized in that on input interface circuit IC1, being connected to reset switch FA and 15 input signals, 15 input signals are respectively 380 volts in excavators, 220 volts, the ground signalling relay tip YJ1 of 170 volts of power-supply systems, YJ2, YJ3, the lifting of excavator, pushing, revolution overload signal relay tip 1GJ, 2GJ, 3GJ, air compressor machine working signal YLJ and switch HK1, air filter operating switch HK2,220 volts of power work switch HK3,170 volts of power supplys and motor ventilator operating switch HK3, self-lubricate gauge tap HK4, self-lubricate heater switch HK5, self-lubricate oil upper and lower bound signal WJ1 and WJ2, self-lubricate pressure signal YYJ; At output interface circuit IC1, IC2, being connected to 22 faults on the IC3 shows and operational order, they are respectively: 380 volts, 220 volts, 170 volts of earth fault display lamp XD11, XD12, XD13, promote, pushing, revolution overload display lamp XD14, XD15, XD16, air compressor motor work control relay JC1 also meets signal lamp XD17, air filter I machine operation control relay JC2 also meets signal lamp XD18, promote blower fan I machine operation control apparatus JC3 and meet signal lamp XD19, promote blower fan II machine operation control relay JC4 and meet signal lamp XD20, pushing blower motor work control relay JC5 also meets signal lamp XD21, revolution blower fan I machine operation control relay JC6 also meets signal lamp XD22, revolution blower fan II machine operation control relay JC7 also meets signal lamp XD23,170 volts of power connection control relay JC8 also meet signal lamp XD24,220 volts of power connection control relay JC9 also meet signal lamp XD25, grounding alarm electric bell DL, self-lubricate working signal lamp XD26, self-lubricate Oil pump electrical machinery work control relay JC10, self-lubricate solenoid control relay DF, self-lubricate fault alarm electric bell DL2 also meets signal lamp XD27, self-lubricate heating signal lamp XD28, self-lubricate heating control relay JC11.

The fault of the utility model mine excavator shows and the protection control device adopts the logical program of all stand-by motors of PLC Programmable Controller excavator to control, and each stand-by motor is all realized individual operation and sent work order by microcomputer.The demonstration and the protection of using PLC Programmable Controller earth fault; the dc motor overload shows and accident automatic diagnosis is accomplished in protection; and can after outage, keep the fault demonstration; conveniently fix a breakdown; increase work efficiency; the self-lubricate of using PLC Programmable Controller regularly; fixed point control; alleviate manually-operated trouble; in the application life of raising equipment, this device makes things convenient for excavating-machine operator to grasp commanding apparatus at drivers' cab, and working signal has been arranged; fault detect is judged; can in time understand state of runtime machine, can avoid the generation of major break down, glitch also can in time be got rid of.

Fig. 1 is the utility model programmable controller (PLC) power supply wiring figure.

Fig. 2 is the utility model input interface circuit (I/O) IC1 external wiring diagram.

Fig. 3 is the utility model output interface circuit (I/O) IC2 external wiring diagram.

Fig. 4 is the utility model output interface circuit (I/O) IC3 external wiring diagram.

Fig. 5 is the utility model output interface circuit (I/O) IC4 external wiring diagram.

Below in conjunction with accompanying drawing the utility model embodiment is described in further detail:

As Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5; the fault of the utility model mine excavator shows and the protection control device; be that input interface circuit IC1 by the PLC programmable controller is connected to 16 input signals, output interface circuit IC2, IC3, IC4 are connected to that 22 output faults show and operation instruction signal is formed.The PLC programmable controller is selected SR-21 type CPU CPU SR-21-EX for use, and the storage capability of CMOSRAM is 0.7K, and input interface circuit IC1 adopts E-0.5N, 16 input modules, output interface circuit IC2, IC3, IC4 adopt E-20T, 8 outputs, R-21P-EX instruction programming device.Programmable controller (PLC) is a kind of universal industrial control device that adopts microprocessor technology, the fault of using it for excavator shows and the protection control device, as Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, on input interface circuit IC1, be connected to 16 input signals, as shown in Figure 2,16 input signals are 380 volts in excavators, 220 volts, the ground protection voltage relay contact YJ1 of 170 volts of power-supply systems, YJ2, YJ3, the lifting overload of excavator, the pushing overload, revolution overload detection signals relay tip 1GJ, 2GJ, 3GJ, reset signal switch FA after above-mentioned 6 faults are got rid of, air compressor machine working signal YLJ serial connection operating switch HKl, air filter operating switch HK2,220 volts of power work switch HK3,170 volts of power supplys and motor ventilator operating switch HK3, self-lubricate gauge tap HK4, self-lubricate heater switch HK5, self-lubricate warm upper and lower bound signal WJ1 of oil and WJ2, self-lubricate pressure signal YYJ; Being connected to 8 faults on output interface circuit IC2 shows and operational order, as shown in Figure 3, the operational orders that these 8 output faults show are: 380 volts, 220 volts, 170 volts earth fault display lamp XD11, XD12, XD13 promote, push, turn round and transship display lamp XD14, XD15, XD16.Remove air compressor motor work control loop r relay coil JC1 and meet signal lamp XD17 and resistance, electric capacity, remove the relay coil JC2 of air filter I machine operation control loop and connect signal lamp XD18 and resistance capacitance.Being connected to fault on output interface circuit IC3 shows and operational order, as shown in Figure 4, these 8 output faults show and operational order is: go to promote the motor I ventilated machine work control loop relay coil JC3 and connect signal lamp XD19 and resistance capacitance, go to promote the motor II ventilated machine work control loop relay coil JC4 and connect signal lamp XD20 and resistance capacitance, go to push the ventilated machine work control loop relay coil JC5 of motor and connect signal lamp XD21 and resistance capacitance, go the turning motor I ventilated machine work control loop relay coil JC6 and connect signal lamp XD22 and resistance capacitance, remove the relay coil JC7 of turning motor II Air cooler machine operation control loop and connect signal lamp XD23 and resistance capacitance, remove 170 volts of power connection control loop relay coil JC8 and connect signal lamp XD24 and resistance capacitance, remove the relay coil JC9 of 220 groups of power connection control loops and connect signal lamp XD25 and resistance capacitance, grounding alarm electric bell DL.Being connected to 6 faults on output interface circuit IC4 shows and operational order.As shown in Figure 5, these 6 faults show and operational order is: ZRZ self-lubricate working signal lamp XD26, remove the relay coil JC10 of ZRZ self-lubricate Oil pump electrical machinery work control loop, remove ZRZ self-lubricate solenoid control loop relay DF, ZRZ self-lubricate fault alarm electric bell DL2 also meets signal lamp XD27, ZRZ self-lubricate heating signal XD28 removes ZRZ self-lubricate heating control loop relay J C11.This device is under the program of establishment is supported, CPU adopts the scan round working method, receives the signal through the input interface circuit input, carry out logic, regularly, counting, displacement etc. carry out computing, the result through output interface circuit control relay and signal lamp, is shown and controls controlled device.

Claims (1)

1. the fault of a mine excavator shows and the protection control device, it includes central processing unit CPU and output interface circuit IC1 and output interface circuit IC2, IC3, IC4 forms the PLC programmable controller, it is characterized in that on input interface circuit IC1, being connected to reset switch FA and 15 input signals, 15 input signals are respectively 380 volts in excavators, 220 volts, the ground signalling relay tip YJ1 of 170 volts of power-supply systems, YJ2, YJ3, the lifting of excavator, pushing, revolution overload signal relay tip 1GJ, 2GJ, 3GJ, air compressor machine working signal YLJ and switch HK1, air filter operating switch HK2,220 volts of power work switch HK3,170 volts of power supplys and motor ventilator operating switch HK3, self-lubricate gauge tap HK4, self-lubricate heater switch HK5, self-lubricate oil upper and lower bound signal WJ1 and WJ2, self-lubricate pressure signal YYJ; At output interface circuit IC1, IC2, being connected to 22 faults on the IC3 shows and operational order, they are respectively: 380 volts, 220 volts, 170 volts of earth fault display lamp XD11, XD12, XD13, promote, pushing, revolution overload display lamp XD14, XD15, XD16, air compressor motor work control relay JC1 also meets signal lamp XD17, air filter I machine operation control relay JC2 also meets signal lamp XD18, promote blower fan I machine operation control relay JC3 and meet signal lamp XD19, promote blower fan II machine operation control relay JC4 and meet signal lamp XD20, pushing blower motor work control relay JC5 also meets signal lamp XD21, revolution blower fan I machine operation control relay JC6 also meets signal lamp XD22, revolution blower fan II machine operation control relay JC7 electrical equipment also meets signal lamp XD23,170 volts of power connection control relay JC8 also meet signal lamp XD24,220 volts of power connection control relay JC9 also meet signal lamp XD25, grounding alarm electric bell DL, self-lubricate working signal lamp XD26, self-lubricate Oil pump electrical machinery work control relay JC10, self-lubricate solenoid control relay DF, self-lubricate fault alarm electric bell DL2 also meets signal lamp XD27, self-lubricate heating signal lamp XD28, self-lubricate heating control relay JC11.

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