CN203811712U - Performance detection device for frequency converter of coal cutter - Google Patents
Performance detection device for frequency converter of coal cutter Download PDFInfo
- Publication number
- CN203811712U CN203811712U CN201420194064.5U CN201420194064U CN203811712U CN 203811712 U CN203811712 U CN 203811712U CN 201420194064 U CN201420194064 U CN 201420194064U CN 203811712 U CN203811712 U CN 203811712U
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- CN
- China
- Prior art keywords
- frequency converter
- plc
- coalcutter
- coal cutter
- load motor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a performance detection device for a frequency converter of a coal cutter. The performance detection device comprises a PLC, a keyboard, a display, a contactor, and a load motor, wherein the keyboard and the display are respectively connected with different communication interfaces of the PLC, a normally-open contact of the contactor is serially connected in a power supply loop of the frequency converter of the coal cutter, and a control coil is connected with an output port of the PLC; and the load motor is connected to an output terminal of a main frequency converter, control input terminals of the main frequency converter are connected with different output ports of the PLC, and the PLC is communicated with the main frequency converter through an RS485 interface or a CAN bus. The circuit system of the performance detection device is obtained by simplified design according to the work principle of an electrical control system of the coal cutter, thus is allowed to simulate the electrical control system of the coal cutter to achieve control for the frequency converter. With the performance detection device, performances of the frequency converter of the coal cutter are detected fully and visually, and the detection difficulty and the detection cost of the frequency converter are reduced greatly.
Description
Technical field
The utility model relates to a kind of device for coalcutter is detected by functional completeness and the loading performance of frequency converter, belongs to detection technique field.
Background technology
In recent years, on coal mine fully-mechanized mining working, electrical haulage shearer has replaced hydraulic haulage shearer gradually, and the core of the automatically controlled part of electrical haulage shearer has been the frequency converter of Speed-regulation effect, its governor control characteristics plays vital effect for the normal operation of electrical haulage shearer.Frequency converter is to utilize the on-off action of power semiconductor device power frequency supply to be transformed to the electric energy control device of another frequency power supply, coalcutter special converter is the arrangements for speed regulation of shearer haulage drive part, by it, controls the control that traction electric machine is realized the coalcutter speed of travel and direction of travel.Because volume and the quality of the special-purpose traction frequency convertor of coalcutter are larger, and trailer system forms principal and subordinate's control system by two frequency converters to be realized one-to-one mode and moves, control system is complicated, and this has just proposed higher requirement to the transportation of frequency converter, daily servicing, Performance Detection.
At present, coalcutter adopts just controlling of separate unit frequency converter by the Function detection mode of traction frequency convertor more (basis), by Frequency Converter Control keyboard, inputting given motor speed parameter to transducer drive load motor moves, and then the correlated performance parameter of Measurement for Inverter, as whether steady in: temperature rise, output voltage etc.Separate unit frequency converter just control the partial properties parameter that can only detect tested frequency converter (basis), for the online electrical system with many frequency converters as traction system of coal cutter, can not carry out intuitively Performance Detection comprehensively, the online testing that realizes many frequency converters of traction system of coal cutter must be mounted to tested frequency converter carries out on-line testing in coal mining machine electric control box, yet, globality due to coalcutter system, electric cabinet part must together be assembled the as a whole load operating of could switching on coalcutter mechanical part, that is to say and will realize on ground the function of frequency converter, performance test, whole coalcutter must be assembled to the test of could switching on ground.For test frequency converter need to prepare a coalcutter, the difficulty of this method of testing and cost are big well imagines.
Utility model content
The purpose of this utility model is the drawback for prior art, and a kind of coalcutter frequency converter device for detecting performance is provided, to reduce detection difficulty and the testing cost of frequency converter.
Problem described in the utility model realizes with following technical proposals:
A kind of coalcutter frequency converter device for detecting performance, formation comprises PLC, keyboard, display, contactor and load motor, described keyboard and display connect respectively the different communication interfaces of PLC, the normally opened contact of described contactor is serially connected in the current supply circuit of coalcutter frequency converter, and its control coil connects the output port of PLC; Described load motor is connected to the output terminal of primary transducer, and each control signal input end of primary transducer connects respectively the different output ports of PLC, passes through RS485 interface or CAN bus communication between PLC and master and slave frequency converter.
Above-mentioned coalcutter frequency converter device for detecting performance, in formation, also comprise loading motor and clutch coupling, described loading motor is connected to the output terminal from frequency converter, and its output shaft docks with the output shaft of load motor through clutch coupling, the output port of the control termination PLC of described clutch coupling.
Above-mentioned coalcutter frequency converter device for detecting performance, described load motor is the threephase asynchronous that power is identical with progression with loading motor.
Above-mentioned coalcutter frequency converter device for detecting performance, also comprises air switch in formation, described air switch is serially connected in the current supply circuit of PLC.
Above-mentioned coalcutter frequency converter device for detecting performance, primary transducer and connect respectively X24 and the X25 port of PLC from the fault-signal output terminal of frequency converter.
The utility model is according to the Circuits System of Electric Control System of Coal Cutter principle of work Reduced Design, this system can be simulated Electric Control System of Coal Cutter and realize the control to frequency converter, utilize this pick-up unit to carry out comprehensive visual inspection to the performance of coalcutter frequency converter, and can significantly reduce detection difficulty and the testing cost of frequency converter.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is electrical schematic diagram of the present utility model.
In figure, each list of reference numerals is: PLC, programmable controller, KB, keyboard, LCD, display, ZB, primary transducer, CB, from frequency converter, KM, contactor, QS, air switch, M1, load motor, M2, loading motor, LH, clutch coupling, optical fiber, GX.
Embodiment
Referring to Fig. 1, the utility model comprises PLC, keyboard KB, display lcd, contactor KM, air switch QS, load motor M1, loading motor M2 and clutch coupling LH.Load motor M1 is the power threephase asynchronous identical with progression for two experiments with loading motor M2.
In order to detect the functional completeness of coalcutter special converter, the utility model requires design circuit kit system to realize the control to frequency converter in order to simulate Electric Control System of Coal Cutter according to Electric Control System of Coal Cutter.Want to simulate completely the control of Electric Control System of Coal Cutter to frequency converter, various communication port of the present utility model must be consistent with Electric Control System of Coal Cutter, and PLC and frequency converter adopt RS485 interface or CAN bus communication; Industrial display LCD is connected with PLC by RS232 interface, for real-time parameter, shows, picture data mainly comprises rotating speed, rotation direction, frequency converter temperature, frequency converter output current, PLC input and output dotted state etc.; The control signal of the Y21 of PLC, Y22, Y24, Y25, Y26, the output of Y27 port comprises the frequency converter function control signals such as " lead and send ", " lead and stop " " acceleration ", " deceleration ", " reset "; Primary transducer ZB and meet respectively load motor M1 and loading motor M2 from frequency converter CB, in the experiment of frequency converter functional completeness, load motor M1 is not connected mutually with loading motor M2, be clutch coupling LH in released state, load motor M1 and loading motor M2 carry out no-load running.In experiment, PLC controls primary transducer ZB and drives load motor M1 to realize acceleration, slow down, the actions such as commutation, primary transducer ZB is controlled from frequency converter CB drive load motor M 2 and is followed load motor M1 rate of doing work balance play (simulation coalcutter) operation by fiber-optic signal simultaneously, in experimentation primary transducer ZB and from every numerical parameter of frequency converter CB as temperature, DC bus-bar voltage, output current, output frequencies etc. all show in real time on display lcd, monitoring, and then detection primary transducer ZB, whether complete from frequency converter CB various functions parameter and communication, reliably.
Another function of this pick-up unit is that the loading performance that realizes separate unit frequency converter detects, realize principle as follows: during test, load motor M1 and loading motor M2 select two power, the threephase asynchronous that number of poles is identical, the tested frequency converter of primary transducer ZB() be connected with load motor M1, by controlling primary transducer ZB, drive load motor M1 to rotate, from frequency converter CB(test frequency converter) be connected with loading motor M2, by controlling, from frequency converter CB(from frequency converter CB, have the control button carrying) drive loading motor M2 to rotate, loading motor M2 is connected by clutch coupling LH firmly with load motor M1 rotating shaft, by regulating the frequency of primary transducer ZB and from the torque of frequency converter CB, frequency converter is carried out to loading characteristic test, given primary transducer ZB frequency values, load motor M1 rotates, drag the equidirectional rotation of loading motor M2, from frequency converter CB, increased gradually torque value, make loading motor M2 and load motor M1 counter-rotation, observe torque and the electric current of two motors, the variation of temperature, torque value and overcurrent when record reaches rated condition, torque value during excess temperature, thereby measure the maximum load value of primary transducer ZB, and by torque, frequency, electric current, the parameters such as temperature are uploaded, carry out data analysis comparison, show in real time, after primary transducer ZB detects, to be connected with PLC from frequency converter CB, realization is to the detection from frequency converter CB.
Change for convenience test frequency converter, be in particular this device designed a movably casing according to test frequency converter's workflow, all components and parts are all arranged on box house, and this bottom half is provided with four universal wheels, during convenient test, move around.Change for convenience the frequency converter that weight is large, special design the case inner support dolly of a placement frequency converter, frequency converter is placed on support dolly, a people just can advance in case gently.
PLC can adopt the FX of Mitsubishi
2N-64MR type.
Claims (5)
1. a coalcutter frequency converter device for detecting performance, it is characterized in that, it comprises PLC, keyboard (KB), display (LCD), contactor (KM) and load motor (M1), described keyboard (KB) and display (LCD) connect respectively the different communication interfaces of PLC, the normally opened contact of described contactor (KM) is serially connected in the current supply circuit of coalcutter frequency converter, and its control coil connects the output port of PLC; Described load motor (M1) is connected to the output terminal of primary transducer (ZB), and each control signal input end of primary transducer (ZB) connects respectively the different output ports of PLC, passes through RS485 interface or CAN bus communication between PLC and primary transducer (ZB).
2. a kind of coalcutter frequency converter device for detecting performance according to claim 1, it is characterized in that, in formation, also comprise loading motor (M2) and clutch coupling (LH), described loading motor (M2) is connected to from the output terminal of frequency converter (CB), its output shaft docks with the output shaft of load motor (M1) through clutch coupling (LH), the output port of the control termination PLC of described clutch coupling (LH).
3. a kind of coalcutter frequency converter device for detecting performance according to claim 2, is characterized in that, described load motor (M1) is the threephase asynchronous that power is identical with progression with loading motor (M2).
4. a kind of coalcutter frequency converter device for detecting performance according to claim 3, is characterized in that, in formation, also comprise air switch (QS), described air switch (QS) is serially connected in the current supply circuit of PLC.
5. a kind of coalcutter frequency converter device for detecting performance according to claim 4, is characterized in that, primary transducer (ZB) and connect respectively X24 and the X25 port of PLC from the fault-signal output terminal of frequency converter (CB).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420194064.5U CN203811712U (en) | 2014-04-21 | 2014-04-21 | Performance detection device for frequency converter of coal cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420194064.5U CN203811712U (en) | 2014-04-21 | 2014-04-21 | Performance detection device for frequency converter of coal cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203811712U true CN203811712U (en) | 2014-09-03 |
Family
ID=51450445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420194064.5U Expired - Fee Related CN203811712U (en) | 2014-04-21 | 2014-04-21 | Performance detection device for frequency converter of coal cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203811712U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104375030A (en) * | 2014-11-11 | 2015-02-25 | 上海大屯能源股份有限公司 | Frequency converter loading test device for mining coal cutter |
| CN106291325A (en) * | 2016-08-23 | 2017-01-04 | 武汉船用机械有限责任公司 | A kind of pilot system of marine deck machinery electrical system |
-
2014
- 2014-04-21 CN CN201420194064.5U patent/CN203811712U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104375030A (en) * | 2014-11-11 | 2015-02-25 | 上海大屯能源股份有限公司 | Frequency converter loading test device for mining coal cutter |
| CN106291325A (en) * | 2016-08-23 | 2017-01-04 | 武汉船用机械有限责任公司 | A kind of pilot system of marine deck machinery electrical system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20210421 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |