CN219936042U

CN219936042U - Contactor test stand

Info

Publication number: CN219936042U
Application number: CN202320775423.5U
Authority: CN
Inventors: 张聪; 林胜; 卢丙达
Original assignee: Changchun Langruisi Environmental Protection Technology Co ltd
Current assignee: Changchun Langruisi Environmental Protection Technology Co ltd
Priority date: 2023-04-11
Filing date: 2023-04-11
Publication date: 2023-10-31
Anticipated expiration: 2033-04-11

Abstract

The utility model belongs to the technical field of contactors, in particular to a contactor test bed, which comprises a detection cable W1, a guide rail, a contactor to be tested, an alternating current adjustable power supply, an industrial personal computer, a main power supply, an industrial personal computer fixing buckle, a 24V direct current power supply, a PLC, an analog module, a time detection instrument, a KM1 contactor, a K01 relay and a direct current adjustable power supply, wherein the detection cable W1 is connected with the main power supply through a wire; the utility model can test the contact sucking time, the breaking time, the contact resistance, the contact sucking condition and the contact breaking condition of the contactor, simulate the voltage fluctuation condition of the contactor in actual use and ensure that the detected contactor can meet the actual use requirement. The contactor of multiple model, multiple supply voltage type can be detected, detection equipment is not required to be replaced, and detection efficiency is improved. The contact sucking time, the breaking time, the contact resistance, the contact sucking condition, the contact breaking condition and the detection result of the contactor are displayed on the industrial personal computer, so that the contactor is more visual.

Description

Contactor test stand

Technical Field

The utility model relates to the technical field of contactors, in particular to a contactor test bed.

Background

The contactor test bed is specially designed for detecting the contactor, can be used for detecting the contact point suction time and the disconnection time of the contactor, can detect the resistance value of the contact point of the contactor, and can also detect the suction and disconnection conditions of the contact point of the contactor; before leaving the factory or during overhauling, the contactor needs to test parameters such as contact suction time, disconnection time, contact resistance, action condition and the like. At present, the contactor detection is basically installed on a system for functional test, the operation is complex, the efficiency is low, and the test conditions are limited. There is a need to develop a contactor detection test stand that is simple to operate and that can perform functional detection of contactor singlets without being connected to the system.

The prior art has the following problems:

before leaving the factory or when overhauling, the contactor needs to test parameters such as contact suction time, disconnection time, contact resistance, action condition and the like, and at present, the contactor detection is basically all installed on a system to perform functional test, so that the operation is complex, the efficiency is low, and the test conditions are limited.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a contactor test bed, which solves the problem that the existing contactor is installed on a system to perform functional test.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the contactor test bed comprises a detection cable W1, a guide rail, a contactor to be detected, an alternating current adjustable power supply, an industrial personal computer, a total power supply, an industrial personal computer fixing buckle, a 24V direct current power supply, a PLC, an analog quantity module, a time detection instrument, a KM1 contactor, a K01 relay, a direct current adjustable power supply, a KM2 contactor, a voltage sensor 01, a voltage sensor 02, a voltage sensor 03, a current sensor, a resistor, a KM3 contactor, a KM4 contactor, a K02 relay and a conversion module.

As a preferable technical scheme of the utility model, the total power supply is respectively connected with a direct-current adjustable power supply, an alternating-current adjustable power supply, a 24V direct-current power supply and a time detection instrument to supply power for equipment; the DC+ pole of the direct-current adjustable power supply is connected with one end of the normally open contact 1 of the KM1 contactor, and the DC-pole of the direct-current adjustable power supply is connected with one end of the normally open contact of the KM2 contactor; the output of the alternating current adjustable power supply is connected with one end of a normally open contact 1 of the KM3 contactor and one end of a normally open contact of the KM4 contactor respectively; the other end of the normally open contact 1 of the KM1 contactor is connected with the other end of the normally open contact 1 of the KM3 contactor, and is connected to a coil A1 of the contactor to be detected through a No. 1 wire of a detection cable W1.

As a preferable technical scheme of the utility model, the other end of the normally open contact of the KM2 contactor is connected with the other end of the normally open contact of the KM4 contactor and the pin (2) of the resistor, and is connected to the coil A2 of the contactor to be detected through the No. 5 wire of the detection cable W1; the 24V output of the 24V direct current power supply is connected with one end of a normally open contact of the K01 relay, and the 0V output is connected with one end of the normally open contact of the K02 relay; the other end of the normally open contact of the K01 relay is connected with the 5 pin of the voltage sensor 01, the 5 pin of the voltage sensor 02, the 5 pin of the voltage sensor 03 and the 5 pin of the current sensor; the other end of the normally open contact of the K02 relay is connected with the 6 pin of the voltage sensor 01, the 6 pin of the voltage sensor 02, the 6 pin of the voltage sensor 03 and the 6 pin of the current sensor; the 1 foot of the time detection instrument is respectively connected with one end of a normally open contact 2 of the KM1 contactor and one end of a normally open contact 2 of the KM3 contactor, and is connected to an L3 contact of the contactor to be detected through a No. 3 wire of a detection cable W1; the other end of the normally open contact 2 of the KM1 contactor and the other end of the normally open contact 2 of the KM3 contactor are connected with a2 pin of a time detection instrument.

As a preferable technical scheme of the utility model, the 3-pin of the time detection instrument is connected to the L4 contact of the contactor to be detected through the No. 7 wire of the detection cable W1; the pin 1 of the voltage sensor 01 is connected to the L1 contact of the contactor to be tested through the line 2 of the detection cable W1, and is connected to the line 1 of the detection cable W1; the pin 2 of the voltage sensor 01 is connected to the L2 contact of the contactor to be tested through the line 6 of the detection cable W1 and is connected to the line 3 of the detection cable W1; the pin 1 of the voltage sensor 02 is connected to the L3 contact of the contactor to be tested through the line 3 of the detection cable W1; the pin 2 of the voltage sensor 02 is connected to the L4 contact of the contactor to be tested through the line 7 of the detection cable W1 and is connected to the line 4 of the detection cable W1; the pin 1 of the voltage sensor 03 is connected to the L5 contact of the contactor to be tested through the line 4 of the detection cable W1, and the line 4 of the detection cable W1 is connected to the conversion module; the 2 pin of the voltage sensor 03 is connected to the L6 contact of the contactor to be tested through the No. 8 wire of the detection cable W1, and is connected to the 1 pin of the current sensor; the 2 pin of the current sensor is connected to the 1 pin of the resistor.

As a preferred embodiment of the present utility model, the dc adjustable power supply, the ac adjustable power supply, the time detecting device, the conversion module, the 3 pin of the voltage sensor 01, the 4 pin of the voltage sensor 01, the 3 pin of the voltage sensor 02, the 4 pin of the voltage sensor 02, the 3 pin of the voltage sensor 03, the 4 pin of the voltage sensor 03, the 3 pin of the current sensor, the 4 pin of the current sensor, the KM1 contactor coil, the KM2 contactor coil, the KM3 contactor coil, the KM4 contactor coil, the K01 relay coil, and the K02 relay coil are all connected to the control system.

As a preferable technical scheme of the utility model, the industrial personal computer outputs signals to the PLC, and the PLC feeds the processed signals back to the industrial personal computer. Meanwhile, the PLC controls each executing mechanism according to signals obtained from the industrial personal computer, and the industrial personal computer and the PLC are communicated by adopting the Ethernet.

As a preferable technical scheme of the utility model, the control system comprises a PLC, an analog quantity module and an industrial personal computer, the detection cable W1 is an 8-core cable, and the conversion module can convert alternating current/direct current voltage into direct current voltage.

Compared with the prior art, the utility model provides a contactor test bed, which has the following beneficial effects:

the utility model can test the contact sucking time, the breaking time, the contact resistance, the contact sucking condition and the contact breaking condition of the contactor, simulate the voltage fluctuation condition of the contactor in actual use and ensure that the detected contactor can meet the actual use requirement. The contactor of multiple model, multiple supply voltage type can be detected, detection equipment is not required to be replaced, and detection efficiency is improved. The contact sucking time, the breaking time, the contact resistance, the contact sucking condition, the contact breaking condition and the detection result of the contactor are displayed on the industrial personal computer, so that the contactor is more visual.

Drawings

FIG. 1 is a schematic diagram of the system principle structure of the present utility model;

FIG. 2 is a schematic diagram of a front view of a test stand according to the present utility model;

FIG. 3 is a schematic diagram of the right-side view structure of the test stand of the present utility model;

FIG. 4 is a schematic diagram of a left-hand structure of the test stand of the present utility model;

FIG. 5 is a schematic diagram of the rear view of the test stand of the present utility model;

FIG. 6 is a schematic top view of the test stand of the present utility model;

FIG. 7 is a schematic view showing the bottom structure of the test stand of the present utility model.

In the figure: 1. detecting a cable W1; 2. a guide rail; 3. a contactor to be tested; 4. an ac adjustable power supply; 5. an industrial personal computer; 6. a main power supply; 7. the industrial personal computer is fixed with the buckle; 8. a 24V DC power supply; 9. a PLC; 10. an analog quantity module; 11. a time detecting instrument; 12. a KM1 contactor; 13. a K01 relay; 14. a DC adjustable power supply; 15. a KM2 contactor; 16. a voltage sensor 01; 17. a voltage sensor 02; 18. a voltage sensor 03; 19. a current sensor; 20. a resistor; 21. a KM3 contactor; 22. a KM4 contactor; 23. a K02 relay; 24. a conversion module;

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 4, in the present embodiment: the contactor test bed comprises a detection cable W1/1, a guide rail 2, a contactor to be detected 3, an alternating current adjustable power supply 4, an industrial personal computer 5, a main power supply 6, an industrial personal computer fixing buckle 7, a 24V direct current power supply 8, a PLC9, an analog quantity module 10, a time detection instrument 11, a KM1 contactor 12, a K01 relay 13, a direct current adjustable power supply 14, a KM2 contactor 15, a voltage sensor 01/16, a voltage sensor 02/17, a voltage sensor 03/18, a current sensor 19, a resistor 20, a KM3 contactor 21, a KM4 contactor 22, a K02 relay 23 and a conversion module 24;

in the embodiment, a main power supply 6 is respectively connected with a direct-current adjustable power supply 14, an alternating-current adjustable power supply 4, a 24V direct-current power supply 8 and a time detection instrument 11 to supply power for equipment; the DC+ pole of the direct current adjustable power supply 14 is connected with one end of a normally open contact 1 of the KM1 contactor 12, and the DC-pole of the direct current adjustable power supply 14 is connected with one end of a normally open contact 15 of the KM2 contactor; the output of the alternating current adjustable power supply 4 is respectively connected with one end of a normally open contact 1 of the KM3 contactor 21 and one end of a normally open contact of the KM4 contactor 22; the other end of the normally open contact 1 of the KM1 contactor 12 is connected with the other end of the normally open contact 1 of the KM3 contactor 21, and is connected to a coil A1 of the contactor 3 to be detected through a No. 1 wire of a detection cable W1/1; the other end of the normally open contact of the KM2 contactor 15 is connected with the other end of the normally open contact of the KM4 contactor 22 and the pin (2) of the resistor 20, and is connected to the coil A2 of the contactor 3 to be detected through the No. 5 wire of the detection cable W1/1; the 24V output of the 24V direct current power supply 8 is connected with one end of a normally open contact of the K01 relay 13, and the 0V output is connected with one end of a normally open contact of the K02 relay 23; the other end of the normally open contact of the K01 relay 13 is connected with the 5 pin of the voltage sensor 01/16, the 5 pin of the voltage sensor 02/17, the 5 pin of the voltage sensor 03/18 and the 5 pin of the current sensor 19; the other end of the normally open contact of the K02 relay 23 is connected with the 6 pin of the voltage sensor 01/16, the 6 pin of the voltage sensor 02/17, the 6 pin of the voltage sensor 03/18 and the 6 pin of the current sensor 19; the 1 foot of the time detection instrument 11 is respectively connected with one end of a normally open contact 2 of a KM1 contactor 12 and one end of a normally open contact 2 of a KM3 contactor 21, and is connected to an L3 contact of a contactor 3 to be detected through a No. 3 wire of a detection cable W1/1; the other end of the normally open contact 2 of the KM1 contactor 12 and the other end of the normally open contact 2 of the KM3 contactor 21 are connected with the 2 pin of the time detection instrument 11; the 3 pin of the time detection instrument 11 is connected to the L4 contact of the contactor 3 to be detected through the No. 7 wire of the detection cable W1/1; the pin 1 of the voltage sensor 01/16 is connected to the L1 contact of the contactor 3 to be tested through the line 2 of the detection cable W1/1 and is connected to the line 1 of the detection cable W1/1; the pin 2 of the voltage sensor 01/16 is connected to the L2 contact of the contactor 3 to be tested through the line 6 of the detection cable W1/1 and is connected to the line 3 of the detection cable W1/1; the pin 1 of the voltage sensor 02/17 is connected to the L3 contact of the contactor 3 to be tested through the No. 3 wire of the detection cable W1/1; the pin 2 of the voltage sensor 02/17 is connected to the L4 contact of the contactor 3 to be tested through the line 7 of the detection cable W1/1 and is connected to the line 4 of the detection cable W1/1; the pin 1 of the voltage sensor 03/18 is connected to the L5 contact of the contactor 3 to be tested through the line 4 of the detection cable W1/1, and the line 4 of the detection cable W1/1 is connected to the conversion module 24; the 2 pin of the voltage sensor 03/18 is connected to the L6 contact of the contactor 3 to be tested through the No. 8 wire of the detection cable W1/1, and is connected to the 1 pin of the current sensor 19; the 2 pin of the current sensor 19 is connected to the (1) pin of the resistor 20; the direct-current adjustable power supply 14, the alternating-current adjustable power supply 4, the time detection instrument 11, the conversion module 24, the 3 pin of the voltage sensor 01/16, the 4 pin of the voltage sensor 01/16, the 3 pin of the voltage sensor 02/17, the 4 pin of the voltage sensor 02/17, the 3 pin of the voltage sensor 03/18, the 4 pin of the voltage sensor 03/18, the 3 pin of the current sensor 19, the 4 pin of the current sensor 19, the KM1 contactor 12 coil, the KM2 contactor 15 coil, the KM3 contactor 21 coil, the KM4 contactor 22 coil, the K01 relay 13 coil and the K02 relay 23 coil are all connected to a control system; the industrial personal computer 5 outputs signals to the PLC9, and the PLC9 feeds back the processed signals to the industrial personal computer 5. Meanwhile, the PLC9 controls each executing mechanism according to signals obtained from the industrial personal computer 5, and the industrial personal computer 5 and the PLC9 adopt Ethernet communication; the control system comprises a PLC9, an analog quantity module 10 and an industrial personal computer 5, wherein the detection cable W1/1 is an 8-core cable, and the conversion module 24 can convert alternating current/direct current voltage into direct current voltage.

The contactor 3 to be tested is fixed on a test bed through the guide rail 2, the detection cable W1/1 is connected with the contactor 3 to be tested, and meanwhile, the total power supply 6 is connected to the AC220V power supply, and detection is started. 1: when the contact sucking time of the direct current contactor is detected, the voltage output value of the direct current adjustable power supply 14 can be set on the control system, the control system controls the coil of the KM1 contactor 12 and the coil of the KM2 contactor 15 to be electrified, so that the normally open contact 1 of the KM1 contactor 12, the normally open contact 2 of the KM1 contactor 12 and the normally open contact 15 of the KM2 contactor 15 are closed, the coil of the direct current contactor to be detected is electrified, the 1 foot and the 2 foot of the time detection instrument 11 are short-circuited, and the time detection instrument 11 provides a trigger signal for the control system. After a period of time, the contacts of the direct current contactor to be tested are closed, namely L1 and L2 are closed, L3 and L4 are closed, and L5 and L6 are closed, at the moment, the 1 foot and 3 foot of the time detection instrument 11 are short-circuited, the time detection instrument 11 gives another trigger signal to the control system, and the data obtained after the control system calculates the two trigger signals is the contact sucking time of the direct current contactor to be tested. 2: when the disconnection time of the direct current contactor contact is detected, the control system controls the loss of electricity of the coil of the KM1 contactor 12 and the coil of the KM2 contactor 15, so that the normally open contact 1 of the KM1 contactor 12, the normally open contact 2 of the KM1 contactor 12 and the normally open contact 15 of the KM2 contactor are disconnected, the coil of the direct current contactor to be detected is lost, the 1 foot and the 2 foot of the time detection instrument 11 are disconnected, and the time detection instrument 11 provides a trigger signal for the control system. After a period of time, the contacts of the direct current contactor to be tested are disconnected, namely, L1 and L2 are disconnected, L3 and L4 are disconnected, and L5 and L6 are disconnected, at the moment, the 1 pin and 3 pin of the time detection instrument 11 are disconnected, the time detection instrument 11 gives another trigger signal to the control system, and the data obtained after the control system calculates the two trigger signals is the contact disconnection time of the direct current contactor to be tested. 3: when the contact sucking time of the alternating-current contactor is detected, the voltage output value of the alternating-current adjustable power supply 4 can be set on the control system, the control system controls the coil of the KM3 contactor 21 and the coil of the KM4 contactor 22 to be electrified, so that the normally open contact 1 of the KM3 contactor 21, the normally open contact 2 of the KM3 contactor 21 and the normally open contact 22 of the KM4 contactor are closed, the coil of the alternating-current contactor to be detected is electrified, the 1 foot and the 2 foot of the time detection instrument 11 are short-circuited, and the time detection instrument 11 provides a trigger signal for the control system. After a period of time, the contacts of the alternating current contactor to be tested are closed, namely L1 and L2 are closed, L3 and L4 are closed, and L5 and L6 are closed, at the moment, the 1 pin and 3 pin of the time detection instrument 11 are short-circuited, the time detection instrument 11 gives another trigger signal to the control system, and the data obtained after the control system calculates the two trigger signals is the contact sucking time of the alternating current contactor to be tested. 4: when the contact disconnection time of the alternating-current contactor is detected, the control system controls the coil of the KM3 contactor 21 and the coil of the KM4 contactor 22 to lose electricity, so that the normally open contacts of the KM3 contactor 21, the normally open contacts of the KM4 contactor 22 and the normally open contacts of the KM3 contactor 21 are disconnected, the coil of the alternating-current contactor to be detected is lost, the 1 foot and the 2 foot of the time detection instrument 11 are disconnected, and the time detection instrument 11 gives a trigger signal to the control system. After a period of time, the contacts of the alternating current contactor to be tested are disconnected, namely, L1 and L2 are disconnected, L3 and L4 are disconnected, and L5 and L6 are disconnected, at the moment, the 1 pin and 3 pin of the time detection instrument 11 are disconnected, the time detection instrument 11 gives another trigger signal to the control system, and the data obtained after the control system calculates the two trigger signals is the contact disconnection time of the alternating current contactor to be tested. 5: when the contact resistance of the direct current contactor is detected, the control system controls the coil 12 of the KM1 contactor, the coil 15 of the KM2 contactor, the coil 13 of the K01 relay and the coil 23 of the K02 relay to be electrified, so that the normally open contact 1 of the KM1 contactor 12, the normally open contact 15 of the KM2 contactor, the normally open contact 13 of the K01 relay and the normally open contact 23 of the K02 relay are closed. The DC adjustable power supply 14 supplies power to the coils of the DC contactor to be tested, and the 24V DC power supply 8 supplies power to the voltage sensors 01/16, 02/17, 03/18 and 19. The DC+ pole of the direct current adjustable power supply 14 is connected with the L1 contact of the contactor 3 to be tested through the No. 2 wire of the detection cable W1/1 at the same time, and the whole power supply loop is as follows: DC+ pole of DC adjustable power supply 14, L1 contact of contactor 3 to be measured, L2 contact of contactor 3 to be measured, L3 contact of contactor 3 to be measured, L4 contact of contactor 3 to be measured, L5 contact of contactor 3 to be measured, L6 contact of contactor 3 to be measured, 1 pin of current sensor 19, 2 pins of current sensor 19, 1 pin of resistor 20, 2 pin of resistor 20, DC pole of DC adjustable power supply 14. The purpose of connecting the pin 1 and the pin 2 of the voltage sensor 01/16 with the contact L1 and the contact L2 of the contactor 3 to be tested through the wire 2 and the wire 6 of the detection cable W1/1 is to detect the voltage drop between the contact L1 and the contact L2 and transmit data to a control system; the purpose of connecting the pin 1 and the pin 2 of the voltage sensor 02/17 with the contact L3 and the contact L4 of the contactor 3 to be tested through the wire 3 and the wire 7 of the detection cable W1/1 is to detect the voltage drop between the contact L3 and the contact L4 and transmit data to a control system; the purpose of connecting pins 1 and 2 of the voltage sensor 03/18 with the L5 contact and the L6 contact of the contactor 3 to be tested through the wires 4 and 8 of the detection cable W1/1 is to detect the voltage drop between the L5 contact and the L6 contact and transmit data to the control system. The purpose of the current sensor 19 being connected in series to the detection circuit is to detect the current in the circuit in the contact closed state of the contactor 3 to be detected and to transmit the detected data to the control system; the control system calculates the data transmitted by the voltage sensor 01/16, the voltage sensor 02/17, the voltage sensor 03/18 and the current sensor 19 to obtain the average value of the resistance of each contact and the resistance of three groups of contacts. 6: when the contact resistance of the alternating-current contactor is detected, the control system controls the coil of the KM3 contactor 21, the coil of the KM4 contactor 22, the coil of the K01 relay 13 and the coil of the K02 relay 23 to be electrified, so that the normally open contact 1 of the KM3 contactor 21, the normally open contact 22 of the KM4 contactor, the normally open contact 13 of the K01 relay and the normally open contact 23 of the K02 relay are closed. The alternating current adjustable power supply 4 supplies power to coils of alternating current contactors to be tested, and the 24V direct current power supply 8 supplies power to the voltage sensors 01/16, 02/17, 03/18 and the current sensor 19. The output of the alternating current adjustable power supply 9 is connected with the L1 contact of the contactor 3 to be tested through the No. 2 wire of the detection cable W1/1 at the same time, and the whole power supply loop is as follows: the AC output pole of the AC adjustable power supply 4, the L1 contact of the contactor 3 to be tested, the L2 contact of the contactor 3 to be tested, the L3 contact of the contactor 3 to be tested, the L4 contact of the contactor 3 to be tested, the L5 contact of the contactor 3 to be tested, the L6 contact of the contactor 3 to be tested, the 1 pin of the current sensor 19, the 2 pin of the current sensor 19, the (1) pin of the resistor 20, the (2) pin of the resistor 20 and the other AC output pole of the AC adjustable power supply 4. The purpose of connecting the pin 1 and the pin 2 of the voltage sensor 01/16 with the contact L1 and the contact L2 of the contactor 3 to be tested through the wire 2 and the wire 6 of the detection cable W1/1 is to detect the voltage drop between the contact L1 and the contact L2 and transmit data to a control system; the purpose of connecting the pin 1 and the pin 2 of the voltage sensor 02/17 with the contact L3 and the contact L4 of the contactor 3 to be tested through the wire 3 and the wire 7 of the detection cable W1/1 is to detect the voltage drop between the contact L3 and the contact L4 and transmit data to a control system; the purpose of connecting pins 1 and 2 of the voltage sensor 03/18 with the L5 contact and the L6 contact of the contactor 3 to be tested through the wires 4 and 8 of the detection cable W1/1 is to detect the voltage drop between the L5 contact and the L6 contact and transmit data to the control system. The purpose of the current sensor 19 being connected in series to the detection circuit is to detect the current in the circuit in the contact closed state of the contactor 3 to be detected and to transmit the detected data to the control system; the control system calculates the data transmitted by the voltage sensor 01/16, the voltage sensor 02/17, the voltage sensor 03/18 and the current sensor 19 to obtain the average value of the resistance of each contact and the resistance of three groups of contacts. 7: when the attraction action of the contact of the direct current contactor is detected, the voltage output value of the direct current adjustable power supply 14 can be set on the control system, and the control system controls the coil of the KM1 contactor 12 and the coil of the KM2 contactor 15 to be electrified, so that the normally open contacts of the KM1 contactor 12 and the normally open contacts of the KM2 contactor 15 are closed. The dc adjustable power supply 14 supplies power to the dc contactor coil to be tested. The DC+ pole of the DC adjustable power supply 14 is connected with the L1 contact of the contactor 3 to be tested through the No. 2 wire of the detection cable W1/1, and the L5 contact of the contactor 3 to be tested also outputs the DC+ pole voltage of the DC adjustable power supply 14 because the contacts of the contactor 3 to be tested are all closed, and the DC+ pole voltage is converted into the voltage which can be received by the control system through the conversion module 24 and then transmitted to the control system. If the contact of the direct current contactor to be tested is always closed and has no opening condition, the control system always receives signals, and the contact actuation action of the direct current contactor to be tested can be judged to be good. When the opening action of the direct current contactor contact is detected, the control system controls the coil of the KM1 contactor 12 and the coil of the KM2 contactor 15 to lose electricity, so that the normally open contacts of the KM1 contactor 12 and the normally open contacts of the KM2 contactor 1 and 15 are opened. The coil of the direct current contactor to be tested loses power. If the contact of the direct current contactor to be tested is immediately disconnected and has no adhesion, the control system can not receive signals all the time, and the disconnection action of the contact of the direct current contactor to be tested can be judged to be good. 8: when the attraction action of the contact of the alternating-current contactor is detected, the voltage output value of the alternating-current adjustable power supply 4 can be set on the control system, and the control system controls the coil of the KM3 contactor 21 and the coil of the KM4 contactor 22 to be electrified, so that the normally open contacts of the KM3 contactor 21 and the normally open contacts of the KM4 contactor 22 are closed. An alternating current adjustable power supply 4 supplies power to the coil of the alternating current contactor to be tested. The AC pole of the AC adjustable power supply 4 is connected with the L1 contact of the contactor 3 to be tested through the No. 2 wire of the detection cable W1/1, and the L5 contact of the contactor 3 to be tested also outputs the AC pole voltage of the AC adjustable power supply 4 because the contacts of the contactor 3 to be tested are all closed, and the AC pole voltage is converted into the DC voltage which can be received by the control system through the conversion module 24 and then transmitted to the control system. If the contact of the alternating current contactor to be tested is always closed and has no opening condition, the control system always receives signals, and the contact actuation of the alternating current contactor to be tested can be judged to be good. When the opening action of the alternating-current contactor contact is detected, the control system controls the coil of the KM3 contactor 21 and the coil of the KM4 contactor 22 to lose electricity, so that the normally open contacts of the KM3 contactor 21 and the normally open contacts of the KM4 contactor 22 are opened. The coil of the alternating current contactor to be tested loses power. If the contact of the alternating current contactor to be tested is immediately disconnected and has no adhesion, the control system can not receive signals all the time, and the disconnection action of the contact of the alternating current contactor to be tested can be judged to be good.

The working principle and the using flow of the utility model are as follows: the designed contactor detection test bed does not need to be connected to a system, can perform functional detection on a contactor single piece, is simple to operate, can perform test only by connecting a power line with a detection cable W1/1, and greatly saves test time. The contactor of multiple model, multiple supply voltage type can be detected, detection equipment is not required to be replaced, and detection efficiency is improved. Meanwhile, voltage fluctuation of the contactor in actual use can be simulated, and the detected contactor can meet the actual use requirement. The detection parameters, control logic and execution mode set by the test bed meet the actual use requirements, the test bed is provided with an industrial personal computer 5 and a detection system, and the detection system is controlled by the industrial personal computer 5 to realize one-key start detection and automatic judgment results.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. Contactor test stand, its characterized in that includes: detection cable W1 (1), guide rail (2), contact to be detected (3), AC adjustable power supply (4), industrial computer (5), total power supply (6), industrial computer fixing buckle (7), 24V DC power supply (8), PLC (9), analog module (10), time detection instrument (11), KM1 contactor (12), K01 relay (13), DC adjustable power supply (14), KM2 contactor (15), voltage sensor 01 (16), voltage sensor 02 (17), voltage sensor 03 (18), current sensor (19), resistor (20), KM3 contactor (21), KM4 contactor (22), K02 relay (23) and conversion module (24).

2. The contactor test stand according to claim 1, wherein: the main power supply (6) is respectively connected with the direct-current adjustable power supply (14), the alternating-current adjustable power supply (4), the 24V direct-current power supply (8) and the time detection instrument (11) to supply power for equipment; the DC+ pole of the direct current adjustable power supply (14) is connected with one end of a normally open contact 1 of the KM1 contactor (12), and the DC-pole of the direct current adjustable power supply (14) is connected with one end of a normally open contact of the KM2 contactor (15); the output of the alternating current adjustable power supply (4) is respectively connected with one end of a normally open contact 1 of the KM3 contactor (21) and one end of a normally open contact of the KM4 contactor (22); the other end of the normally open contact 1 of the KM1 contactor (12) is connected with the other end of the normally open contact 1 of the KM3 contactor (21), and is connected to a coil A1 of the contactor (3) to be detected through a No. 1 wire of the detection cable W1 (1).

3. The contactor test stand according to claim 1, wherein: the other end of the normally open contact of the KM2 contactor (15) is connected with the other end of the normally open contact of the KM4 contactor (22) and the pin (2) of the resistor (20), and is connected to the coil A2 of the contactor (3) to be detected through the No. 5 wire of the detection cable W1 (1); the 24V output of the 24V direct current power supply (8) is connected with one end of a normally open contact of the K01 relay (13), and the 0V output is connected with one end of a normally open contact of the K02 relay (23); the other end of the normally open contact of the K01 relay (13) is connected with the 5 pin of the voltage sensor 01 (16), the 5 pin of the voltage sensor 02 (17), the 5 pin of the voltage sensor 03 (18) and the 5 pin of the current sensor (19); the other end of the normally open contact of the K02 relay (23) is connected with the 6 pin of the voltage sensor 01 (16), the 6 pin of the voltage sensor 02 (17), the 6 pin of the voltage sensor 03 (18) and the 6 pin of the current sensor (19); the 1 foot of the time detection instrument (11) is respectively connected with one end of a normally open contact 2 of the KM1 contactor (12) and one end of a normally open contact 2 of the KM3 contactor (21), and is connected to an L3 contact of the contactor (3) to be detected through a No. 3 wire of the detection cable W1 (1); the other end of the normally open contact 2 of the KM1 contactor (12) and the other end of the normally open contact 2 of the KM3 contactor (21) are connected with the 2 pin of the time detection instrument (11).

4. The contactor test stand according to claim 1, wherein: the 3 pin of the time detection instrument (11) is connected to the L4 contact of the contactor (3) to be detected through the No. 7 wire of the detection cable W1 (1); the pin 1 of the voltage sensor 01 (16) is connected to the L1 contact of the contactor (3) to be tested through the line 2 of the detection cable W1 (1) and is connected to the line 1 of the detection cable W1 (1); the pin 2 of the voltage sensor 01 (16) is connected to the L2 contact of the contactor (3) to be tested through the line 6 of the detection cable W1 (1) and is connected to the line 3 of the detection cable W1 (1); the pin 1 of the voltage sensor 02 (17) is connected to the L3 contact of the contactor (3) to be tested through the No. 3 wire of the detection cable W1 (1); the pin 2 of the voltage sensor 02 (17) is connected to the L4 contact of the contactor (3) to be tested through the line 7 of the detection cable W1 (1) and is connected to the line 4 of the detection cable W1 (1); the pin 1 of the voltage sensor 03 (18) is connected to the L5 contact of the contactor (3) to be tested through the wire 4 of the detection cable W1 (1), and the wire 4 of the detection cable W1 (1) is connected to the conversion module (24); the pin 2 of the voltage sensor 03 (18) is connected to the L6 contact of the contactor (3) to be tested through the line 8 of the detection cable W1 (1), and is connected to the pin 1 of the current sensor (19); the 2 pin of the current sensor (19) is connected to the 1 pin of the resistor (20).

5. The contactor test stand according to claim 1, wherein: the direct current adjustable power supply (14), the alternating current adjustable power supply (4), the time detection instrument (11), the conversion module (24), the 3 pin of the voltage sensor 01 (16), the 4 pin of the voltage sensor 01 (16), the 3 pin of the voltage sensor 02 (17), the 4 pin of the voltage sensor 02 (17), the 3 pin of the voltage sensor 03 (18), the 4 pin of the voltage sensor 03 (18), the 3 pin of the current sensor (19), the 4 pin of the current sensor (19), the KM1 contactor (12) coil, the KM2 contactor (15) coil, the KM3 contactor (21) coil, the KM4 contactor (22) coil, the K01 relay (13) coil and the K02 relay (23) coil are all connected to a control system.

6. The contactor test stand according to claim 1, wherein: the industrial personal computer (5) outputs signals to the PLC (9), the PLC (9) feeds the processed signals back to the industrial personal computer (5), meanwhile, the PLC (9) controls each executing mechanism according to the signals obtained from the industrial personal computer (5), and the industrial personal computer (5) and the PLC (9) adopt Ethernet communication.

7. The contactor test stand according to claim 5, wherein: the control system comprises a PLC (9), an analog quantity module (10) and an industrial personal computer (5), wherein the detection cable W1 (1) is an 8-core cable, and the conversion module (24) can convert alternating current/direct current voltage into direct current voltage.