Motor running-in and withstand voltage testing device

Abstract

The utility model relates to a motor running-in and withstand voltage testing device, which comprises a connecting end, a running-in testing unit and a withstand voltage testing unit, the electrode of a motor can be connected with the connecting end for running-in and / or withstand voltage testing, the running-in testing unit and the withstand voltage testing unit are connected with the connecting end in a switchable manner through a relay, and the relay is powered by the running-in testing unit. When the running-in test unit works, the running-in test unit supplies power to the relay, the relay enables the running-in test unit to be connected with the connecting end, the motor is driven by the running-in test unit to perform forward and reverse rotation running-in, and when the relay is not powered, the relay enables the withstand voltage test unit to be connected with the connecting end. The motor is subjected to a withstand voltage test by the withstand voltage test unit. According to the utility model, a motor does not need to be moved between a running-in test and a withstand voltage test, so that the test efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a device for motor running-in and withstand voltage testing. Background Art

[0002] The running-in test of a motor refers to running the motor forward and backward for a period of time under a certain voltage to ensure a flat contact surface between the carbon brush and the commutator. The withstand voltage test refers to testing whether the leakage current between the positive and negative poles of the motor and the motor housing exceeds the standard under high voltage. In the prior art, generally, the motor is placed in different devices to perform the above two tests separately, and the process of transferring the motor will obviously reduce the efficiency. Summary of the Utility Model

[0003] The main purpose of the utility model is to provide a device that can perform running-in tests and withstand voltage tests.

[0004] To achieve the above purpose, the utility model provides a device for motor running-in and withstand voltage testing, including:

[0005] A connection end, to which the electrodes of the motor can be connected for running-in and / or withstand voltage testing,

[0006] A running-in test unit and a withstand voltage test unit, which are connected to the connection end through a relay that can be switched, and the relay is powered by the running-in test unit.

[0007] When the running-in test unit works, the running-in test unit supplies power to the relay, and the relay conducts the running-in test unit and the connection end, and the motor is driven by the running-in test unit to run forward and backward for running-in.

[0008] When the relay is not powered, the relay conducts the withstand voltage test unit and the connection end, and the motor is subjected to a withstand voltage test by the withstand voltage test unit.

[0009] In some embodiments of the utility model, the withstand voltage test unit includes a withstand voltage tester, which has a grounding end and a probe, and the grounding end is connected to the relay.

[0010] In some embodiments of the utility model, the running-in test unit includes a running-in test power supply and a control switch.

[0011] In some embodiments of the utility model, the relay is an electromagnetic relay, which has an electromagnetic connection end, a normally open connection end, a normally closed connection end, and an output end. The running-in test unit is respectively connected to the electromagnetic connection end and the normally open connection end, the withstand voltage test unit is connected to the normally closed connection end, and the connection end is connected to the output end.

[0012] The device of the present utility model does not need to move the motor between the running-in test and the withstand voltage test, improving the test efficiency. Description of the Drawings

[0013] Figure 1 It is a circuit schematic diagram of the motor running-in and withstand voltage test device in the embodiment.

[0014] In the figure: 11 - Host of the withstand voltage tester, 12 - Probe, 20 - Running-in tester, 21 - Running-in test power supply, 22 - Control switch, 30 - Electromagnetic relay, 31 - Electromagnetic coil, 32 - Normally open terminal, 33 - Normally closed terminal, 40 - Motor, 50 - Connection terminal. Detailed Embodiment

[0015] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art. In case of conflict, the description and definition herein shall prevail.

[0016] In view of the fact that in the prior art, the motor needs to be placed in different devices for running-in test and withstand voltage test respectively, the present utility model provides a device for running-in and withstand voltage test of the motor, and its structure mainly includes:

[0017] Connection terminal, the electrodes of the motor can be connected to the connection terminal for running-in and / or withstand voltage test.

[0018] Running-in test unit and withstand voltage test unit, which are connected to the connection terminal through a relay in a switchable manner, and the relay is powered by the running-in test unit.

[0019] When the running-in test unit works, the running-in test unit supplies power to the relay, and the relay makes the running-in test unit conduct with the connection terminal, and the motor is driven by the running-in test unit to perform forward and reverse running-in.

[0020] When the relay is not powered, the relay makes the withstand voltage test unit conduct with the connection terminal, and the motor is subjected to the withstand voltage test by the withstand voltage test unit.

[0021] The above device switches between the two test units through a relay, and the switching control of the relay is actually realized by the running-in test unit. When the running-in test unit is powered on and working, the relay is powered on and switches to connect the running-in test unit with the connection terminal. After the motor is connected to the connection terminal, the running-in test unit supplies power to the motor for alternating forward and reverse rotation to perform the running-in test. When the running-in test unit is powered off and stops working, the relay switches to connect the withstand voltage test unit with the connection terminal due to power loss. At this time, the motor does not need to be transferred to other devices and can directly perform the withstand voltage test, which is very simple.

[0022] The withstand voltage test unit used is known. Preferably, a withstand voltage tester is used. The withstand voltage tester has a grounding terminal and a probe. The grounding terminal is connected to the relay. The probe is used to provide high voltage, and the grounding terminal is used to connect to the electrode of the motor. The usage method of the withstand voltage tester is known. After turning on the withstand voltage tester, the probe is contacted with the motor housing for a period of time, and then the withstand voltage performance of the motor is judged according to the magnitude of the detected current.

[0023] The running-in test unit described above is known. Generally, it includes a running-in test power supply and a control switch. The running-in test power supply is used to drive the motor to rotate forward and backward alternately, and the control switch controls the conduction or disconnection of the running-in test unit. On the one hand, the running-in test power supply supplies power to the relay, and on the other hand, it is connected to the switchable terminal of the relay to realize the switching of the motor between the running-in test unit and the withstand voltage test unit through the relay.

[0024] The relay is an electromagnetic relay, which has an electromagnetic terminal, a normally open terminal, a normally closed terminal and an output terminal. The running-in test unit is respectively connected to the electromagnetic terminal and the normally open terminal of the relay. The withstand voltage test unit is connected to the normally closed terminal of the relay, and the connection terminal is connected to the output terminal.

[0025] Hereinafter, the present invention will be further described in conjunction with specific embodiments.

[0026] Figure 1 Fig. shows the structure of a specific motor running-in and withstand voltage test device. It mainly includes a connection terminal 50, a running-in tester 20, a withstand voltage tester and a relay 30. The withstand voltage tester mainly includes a withstand voltage tester main unit 11, and the withstand voltage tester main unit 11 is provided with a probe 12 and a grounding terminal 13. The running-in tester 20 mainly includes a running-in test power supply 21 and a control switch 22. The relay 30 mainly includes an electromagnetic coil 31, a normally open end 32 and a normally closed end 33.

[0027] The running-in tester supplies power to the relay to control the relay to switch. Refer to the attached Figure 1 , the running-in test power supply 21, the control switch 22 and the electromagnetic coil 31 of the relay form a loop. When the control switch 22 is closed, the running-in tester starts to work and supplies power to the electromagnetic coil 31 of the relay. The electromagnetic coil 31 is energized to control the normally open terminal 32 to close and the normally closed terminal 33 to open.

[0028] The running-in tester and the withstand voltage tester are switchably connected to the connection terminal 50 through the relay 30. The specific structure can be referred to Figure 1。The grounding terminal 13 on the withstand voltage tester main unit 11 is connected to the normally closed terminal 33 in the relay 30 through a wire; the running-in tester 20 is connected to the normally open terminal 32 in the relay 30 through a wire, and the output terminal of the relay is connected to the connection terminal 50 through a wire. The positive and negative electrodes of the motor can be connected to the connection terminal for running-in and withstand voltage tests.

[0029] When the control switch 22 is closed, the running-in test power supply 21 supplies power to the electromagnetic coil 31. After the electromagnetic coil 31 is energized, it drives the contact to move, and the normally open terminal 32 is closed. The running-in test power supply 21 supplies power to the motor 40 through the connection terminal 50 for the running-in test of forward and reverse rotation.

[0030] When the control switch 22 is opened, the electromagnetic coil 31 loses power, the contact moves in the reverse direction, and the normally closed terminal 33 comes into contact and conducts again. The withstand voltage tester main unit 11 and the motor 40 are conducted through the connection terminal 50. At this time, operate to turn on the withstand voltage tester main unit 11, and contact the probe 12 on the surface of the motor 40 to perform the withstand voltage test.

[0031] The embodiments in the present utility model are only used to illustrate the present utility model and do not constitute a limitation on the scope of the claims. Other substantially equivalent alternatives that can be conceived by those skilled in the art are all within the protection scope of the present utility model.

Claims

1. Motor running-in and withstand voltage test device, characterized by include: Connection terminals, to which the motor electrodes can be connected for running-in and / or withstand voltage testing, The running-in test unit and the withstand voltage test unit are switchably connected to the connection end via a relay, and the relay is powered by the running-in test unit. When the running-in test unit is working, the running-in test unit supplies power to the relay, and the relay connects the running-in test unit with the connection end, and the motor is driven by the running-in test unit to perform forward and reverse running-in. When the relay is not powered, the relay connects the withstand voltage test unit to the connection end, and the motor is subjected to a withstand voltage test by the withstand voltage test unit.

2. The motor running-in and withstand voltage test device according to claim 1, characterized in that The withstand voltage test unit comprises a withstand voltage tester, the withstand voltage tester has a ground terminal and a probe, and the ground terminal is connected to the relay.

3. The motor running-in and withstand voltage test device according to claim 1, characterized in that The running-in test unit comprises a running-in test power supply and a control switch.

4. The motor running-in and withstand voltage test device according to claim 1, characterized in that The relay is an electromagnetic relay having an electromagnetic terminal, a normally open terminal, a normally closed terminal and an output terminal. The running-in test unit is respectively connected to the electromagnetic terminal and the normally open terminal, the withstand voltage test unit is connected to the normally closed terminal, and the connection terminal is connected to the output terminal.

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