CN215493999U

CN215493999U - Low-voltage high-current device for testing cutting part of coal mining machine

Info

Publication number: CN215493999U
Application number: CN202121273683.XU
Authority: CN
Inventors: 王昆宏; 白永胜; 张桃卫; 赵立猛; 刘晶晶; 李雷; 李庆章; 王伟; 毕晓斌; 郭岱; 李胜军; 黄伟; 路艳旗; 杜建明
Original assignee: Coal Machinery Equipment Research Institute Of Huayang New Material Technology Group Co ltd
Current assignee: Coal Machinery Equipment Research Institute Of Huayang New Material Technology Group Co ltd
Priority date: 2021-06-08
Filing date: 2021-06-08
Publication date: 2022-01-11
Anticipated expiration: 2031-06-08

Abstract

A low-voltage high-current device for testing a cutting part of a coal mining machine aims at directly carrying out function testing on a cutting motor and quickly judging a fault occurrence point; the utility model comprises a circuit breaker, an electric voltage regulator, a single-phase heavy current generator, a fuse, a button, a coil, a current transformer, a current timer transformer, an ammeter and a current timer; the secondary output side of the breaker Q is sequentially connected with an emergency stop button S5, a KM1 coil, a stop button S2, a start button S1 and a secondary output side N of the breaker Q; the circuit breaker is connected between an external 380V power supply and an electric voltage regulator T1, the output current is regulated by the electric voltage regulator T1, buttons S3 and S4, the secondary output side of the electric voltage regulator T1 is connected with a voltmeter PV1 by fuses FU1 and FU2 and is connected with the primary input side of a single-phase large-current generator T2 by KM1, and the secondary output side of the single-phase large-current generator T2 is connected with a current transformer TA 1; current transformer TA1 is connected to one side of current timer transformer TA 2.

Description

Low-voltage high-current device for testing cutting part of coal mining machine

Technical Field

The utility model relates to a low-voltage high-current device for testing, in particular to a low-voltage high-current device for testing a cutting part of a coal mining machine.

Background

The large-current generator is necessary equipment in a large-current place required in an electrical test, and is widely applied to units such as power plants, distribution substations, electrical appliance manufacturing, scientific research, laboratories and the like. It is a short-time or intermittent working system, and has the features of small volume, light weight, good performance and convenient use and maintenance. At present, a large number of large-current generators exist in the market, but the large-current generators mainly used for testing a cutting part of a coal mining machine are rare, the installed power of the coal mining machine is increased along with the continuous improvement of the electrification degree of the coal industry, and the original old equipment cannot meet the requirement of equipment performance testing.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides a low-voltage high-current device for testing a cutting part of a coal mining machine. The device can directly and quickly perform function test on the cutting motor under the condition of not disassembling all motor devices of the coal mining machine, quickly judge fault occurrence points, save time, reduce disassembling cost, improve repairing efficiency of the mine coal mining machine and have obvious economic benefit.

The utility model comprises a breaker Q, an electric voltage regulator T1, a single heavy current generator T2, a fuse FU1, an FU2, a voltmeter PV1, an emergency stop button S5, a KM1 coil, a stop button S2, a start button S1, a current transformer TA1, a current timer transformer TA2, an ammeter PA1, a current timer JS1 and a time reset button S6; the secondary output side of the breaker Q is sequentially connected with an emergency stop button S5, a KM1 coil, a stop button S2, a start button S1 and a secondary output side N of the breaker Q; the circuit breaker is connected between an external 380V power supply and an electric voltage regulator T1, the output current is regulated by the electric voltage regulator T1, buttons S3 and S4, the secondary output side of the electric voltage regulator T1 is connected with a voltmeter PV1 through fuses FU1 and FU2, and is connected with the primary input side of a single-phase large-current generator T2 through KM1, and the secondary output side of the single-phase large-current generator T2 is connected with a current transformer TA 1; current transformer TA1 links to each other with current timer transformer TA2 one side, and current timer transformer TA2 opposite side links to each other with ampere meter PA1, and current timer JS1 links to each other with time reset button S6 to the output value and the output time timing of voltage electric current.

The model of the current timer mutual inductor TA2 is JLS800-1/AC 220V; the model of the circuit breaker is TGM 1-125L/80A/4P. The model of the electric voltage regulator T1 is TDGC2g-15KVA/380V, the input is 380V, and the output is 0-500V. The current timer JS1, which records the output times of the voltmeter PV1 and ammeter PA1, is provided with a time reset button S6. The model of the single-phase large-current generator T2 is HN-DDL/500A/5V, 0-500V is input, and 0-500A current is output.

An external 380V power supply is connected into a current cabinet, firstly, the voltage is regulated to 1-500V through an electric voltage regulator T1 for output, then the conversion is carried out through a T2 single-phase large current generator, and finally, 0-500A current is output. The button can adjust the output voltage of the T1, and the voltmeter, the ammeter and the current timer JS1 play the roles of measurement and timing. The circuit breaker Q outputs, simultaneously switches on a start button S1, a stop button S2, an emergency stop button S5 and a time reset button S6. The current transformer TA1 is connected with a current timer transformer TA2, is connected with an ammeter PA1, a current timer JS1 and a time reset button S6, and realizes the timing of the output values of voltage and current and the output time. The electric voltage regulator T1 is characterized in that the electric voltage regulator T1 inputs 380V and outputs 0-500V. The current timer JS1 records the output time of the voltmeter PV1 and the ammeter PA1, and is provided with a time reset button S6. The single-phase high-current generator T2 is characterized in that the single-phase high-current generator T2 inputs 0-500V and outputs 0-500A current. The current output by the single high-current generator T2 is connected in series to a motor of the cutting part of the coal mining machine and is used for testing the motor function of the cutting part of the coal mining machine. The buttons S1-S6 respectively control start, stop, indicator light, current drop, current rise, start and time reset.

The utility model can directly and quickly carry out function test on the cutting motor under the condition of not disassembling all motor devices of the coal mining machine, observe the test effect, quickly judge the fault occurrence point, save time, reduce the disassembling cost, improve the repairing efficiency of the mine coal mining machine, have obvious economic benefit, provide possibility for the large-current test experiment of the cutting part motor of the coal mining machine, greatly improve the fault interruption rate of the cutting motor of the coal mining machine and ensure the delivery quality of products.

Drawings

Fig. 1 is an electrical schematic of the present invention.

Detailed Description

The output side (4) of the breaker Q is sequentially connected with an emergency stop button S5, a KM1 coil, a stop button S2, a start button S1 and the output side N of the breaker Q; the circuit breaker is connected between an external 380V power supply and an electric voltage regulator T1, the electric voltage regulator T1 regulates the rising or falling of output current through buttons S3 and S4, the (3) and (4) sides of the secondary output of the electric voltage regulator T1 are connected with a voltmeter PV1 through fuses FU1 and FU2, meanwhile, the secondary output sides (3) of the single-phase high-current generator T2 are connected with the primary input sides (1) and (2) of the single-phase high-current generator T1, the secondary output side (3) of the single-phase high-current generator T2 is connected with a current transformer TA1, and the model of T2 is HN-DDL/500A/5V, and 0-500A current is finally output. Current transformer TA1 links to each other with one side of current timer transformer TA2, and current timer transformer TA2 opposite side links to each other with ampere meter PA1, and current timer JS1 is connected with time reset button S6, realizes the timing to the output value and the output time of voltage, electric current.

A380V alternating current power supply is connected to the low-voltage large-current cabinet, and the power supply is output through a circuit breaker Q to light an indicator lamp. Buttons adjust current up S4 and current down S3 to view the reading of voltmeter PV1, which causes the output voltage of the electric voltage regulator T1 to increase or decrease as required by the test. When the start button S1 is pressed, the indicator light is on, the reading of the ammeter PA1 is observed, the output current can be adjusted between 0 and 500A, and the test requirements of different cutting motors of the coal mining machine are met. When an accident occurs, the stop button S2, or the scram button S5, may be pressed. When a test is completed, the time reset button S6 may be pressed to time reset the current timer in preparation for the next test. When the output current of the low-voltage high-current cabinet meets the rated current of the cutting motor of the coal mining machine, the test is started, and the feedback condition of the control system of the coal mining machine is tested by observing the output time of the current timer, so that the high-current performance test of the cutting part motor of the coal mining machine with large installed power is realized, the test data is mastered in advance, the quality of the cutting system is judged, and the downhole fault is avoided. An external 380V power supply is connected into a current cabinet, firstly, the voltage is regulated to 1-500V through an electric voltage regulator T1 for output, then the conversion is carried out through a T2 single-phase large current generator, and finally, 0-500A current is output. The button can adjust the output voltage of the T1, and the voltmeter, the ammeter and the current timer JS1 play the roles of measurement and timing.

Claims

1. A low-voltage large-current device for testing a cutting part of a coal mining machine is characterized by comprising a breaker Q, an electric voltage regulator T1, a single large-current generator T2, a fuse FU1, an FU2, a voltmeter PV1, an emergency stop button S5, a KM1 coil, a stop button S2, a start button S1, a current transformer TA1, a current timer transformer TA2, an ammeter PA1, a current timer JS1 and a time reset button S6; the secondary output side of the breaker Q is sequentially connected with an emergency stop button S5, a KM1 coil, a stop button S2, a start button S1 and a secondary output side N of the breaker Q; the circuit breaker is connected between an external 380V power supply and an electric voltage regulator T1, the output current is regulated by the electric voltage regulator T1, buttons S3 and S4, the secondary output side of the electric voltage regulator T1 is connected with a voltmeter PV1 through fuses FU1 and FU2, and is connected with the primary input side of a single-phase large-current generator T2 through a KM1 coil, and the secondary output side of the single-phase large-current generator T2 is connected with a current transformer TA 1; current transformer TA1 links to each other with current timer transformer TA2 one side, and current timer transformer TA2 opposite side links to each other with ampere meter PA1, and current timer JS1 links to each other with time reset button S6 to the output value and the output time timing of voltage electric current.

2. The low-voltage high-current device for testing the cutting part of the coal mining machine as claimed in claim 1, wherein the type of the current timer transformer TA2 is JLS800-1/AC 220V; the model of the circuit breaker is TGM 1-125L/80A/4P.

3. The low-voltage high-current device for testing the cutting part of the coal mining machine as claimed in claim 1 or 2, wherein the electric voltage regulator T1 is of TDGC2g-15KVA/380V, the input is 380V, and the output is 0-500V.

4. The low-voltage high-current device for testing the cutting unit of a coal mining machine as claimed in claim 1 or 2, wherein a current timer JS1 for recording the output time of a voltmeter PV1 and an ammeter PA1 is provided with a time reset button S6.

5. The low-voltage high-current device for testing the cutting part of the coal mining machine as claimed in claim 1 or 2, wherein the type of the single high-current generator T2 is HN-DDL/500A/5V, 0-500V is input, and 0-500A current is output.