Relay durability tester

Abstract

The utility model discloses a relay durability tester, belongs to the technical field of relay testing, and solves the technical problem that the existing relay life testing device is complex in circuit structure. The device comprises a DC power supply module and further comprises a test cabinet, the front side of the test cabinet is provided with a test panel, and the test panel is provided with a counter, a time controller and a relay connecting seat for plugging a relay to be tested; the relay connecting seat is provided with a coil pin and a normally open contact pin which correspond to a relay to be tested, the direct-current power supply module is electrically connected with the coil pin of the relay connecting seat through the time controller, the normally open contact pin of the relay connecting seat is electrically connected with the input end of the counter, and the direct-current power supply module is electrically connected with the power supply end of the counter; and the test panel is provided with a pressing mechanism for pressing the relay to be tested. According to the utility model, the counter, the time controller and the relay connecting seat are used to build the test circuit, the circuit structure is simple, and wiring is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of relay testing, and more specifically, to a relay durability tester. Background Art

[0002] Relays are automatic switching components with isolation functions. They are widely used in remote control, telemetry, communication, automatic control, mechatronics and power electronic equipment. They are one of the most important control components. Relays are frequently switched on and off for a long time, so their durability must be guaranteed.

[0003] Patent publication CN108508355A discloses a relay life test device, including a control unit and a drive circuit connected to a relay under test, wherein one end of an output contact of the relay under test is connected to a load power supply, and the other end is grounded through a resistive load. The control unit includes a switch action control module for controlling the on and off of the drive circuit, a switch state collection / counting module for collecting and counting the switch states of the drive circuit and the contacts of the relay under test, a resistive load control module for controlling the size of the resistive load of the relay under test, and a human-computer interaction module. The switch state collection / counting module uses the number of switch actions of the drive circuit as a reference to calculate the number of errors in the contact actions of the relay under test and record the number of times the contact of the relay under test has made an error. The switch frequency of the drive circuit is set through the human-computer interaction module, and the total number of actions of the drive circuit and the number of errors in the contact of the relay under test and the number of errors are displayed.

[0004] The above-mentioned test device needs to be connected to a resistive load and a human-computer interaction module, and the circuit structure is relatively complicated. Utility Model Content

[0005] The technical problem to be solved by the utility model is aimed at the above-mentioned deficiencies in the prior art, and the purpose of the utility model is to provide a relay durability tester with a simple structure.

[0006] The technical scheme of the utility model is: a relay durability tester, including a DC power supply module and a test cabinet, wherein a test panel is provided on the front side of the test cabinet, and the test panel is provided with a counter, a time controller, and a relay connection socket for plugging in a relay to be tested; the relay connection socket is provided with a coil pin and a normally open contact pin corresponding to the relay to be tested, the DC power supply module is electrically connected to the coil pin of the relay connection socket through the time controller, the normally open contact pin of the relay connection socket is electrically connected to the input end of the counter, and the DC power supply module is electrically connected to the power supply end of the counter; the test panel is provided with a clamping mechanism for clamping the relay to be tested.

[0007] As a further improvement, the clamping mechanism includes a pressure rod, a first connecting seat located on one side of the relay connecting seat, and a second connecting seat located on the other side of the relay connecting seat. The pressure rod spans above the relay connecting seat, one end of the pressure rod is rotatably connected to the top of the first connecting seat, and a threaded hole is provided on the top of the second connecting seat. The other end of the pressure rod is locked in the threaded hole by a bolt.

[0008] Furthermore, the other end of the pressure rod is provided with a waist-shaped hole for installing the bolt.

[0009] Furthermore, an elastic material layer is provided at the bottom of the pressure rod.

[0010] Furthermore, the elastic material layer is made of elastic cotton or silicone.

[0011] Furthermore, a heat dissipation fan is provided on one side wall of the test cabinet, and heat dissipation holes are provided on the other side wall of the test cabinet.

[0012] Furthermore, the counter, the time controller, and the relay connection socket are arranged laterally and linearly on the test panel, wherein the relay connection socket is located on the far right.

[0013] Furthermore, the model of the DC power supply module is E3631A.

[0014] Furthermore, the model of the counter is JDM11-6H.

[0015] Furthermore, the model of the time controller is DH48S-S.

[0016] Beneficial Effects

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] The utility model constructs a test circuit through a counter, a time controller and a relay connection seat, and does not need to connect a resistive load or a human-computer interaction module. The circuit structure is simple and wiring is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the pressing mechanism in the utility model;

[0021] Figure 3 It is a schematic diagram of the top view of the structure of the intermediate pressure rod of the utility model.

[0022] Wherein: 1-DC power supply module, 2-test cabinet, 3-test panel, 4-counter, 5-time controller, 6-relay to be tested, 7-relay connecting seat, 8-pressing mechanism, 9-pressure rod, 10-first connecting seat, 11-second connecting seat, 12-bolt, 13-waist-shaped hole, 14-elastic material layer, 15-cooling fan. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0024] See also Figure 1 to Figure 3 A relay durability tester includes a DC power supply module 1 and a test cabinet 2. A test panel 3 is provided on the front side of the test cabinet 2, and the test panel 3 is provided with a counter 4, a time controller 5, and a relay connector 7 for plugging in a relay to be tested 6. The relay connector 7 is provided with coil pins and normally open contact pins corresponding to the relay 6 to be tested. Of course, the relay connector 7 can adopt a relay base that matches the relay 6 to be tested. The DC power supply module 1 is electrically connected to the coil pins of the relay connector 7 through the time controller 5, and the normally open contact pins of the relay connector 7 are electrically connected to the input end of the counter 4, and the DC power supply module 1 is electrically connected to the power supply end of the counter 4. The test panel 3 is provided with a clamping mechanism 8 for clamping the relay 6 to be tested.

[0025] Working process: The power supply is controlled on and off by the time controller 5 to realize the control of the pull-in and release of the relay 6 to be tested. At the same time, the counter 4 is used to record the number of pull-in times of the relay 6 to be tested, so as to realize the life statistics of the number of pull-in times of the mechanical parts of the test relay and improve the relay test efficiency.

[0026] Compared with the prior art, the utility model constructs a test circuit through a counter, a time controller, and a relay connection socket, and does not need to connect a resistive load or a human-computer interaction module. The circuit structure is simple and wiring is convenient.

[0027] In this embodiment, the pressing mechanism 8 includes a pressing rod 9, a first connecting seat 10 located on one side of the relay connecting seat 7, and a second connecting seat 11 located on the other side of the relay connecting seat 7. The pressing rod 9 spans over the top of the relay connecting seat 7, and one end of the pressing rod 9 is rotatably connected to the top of the first connecting seat 10. A threaded hole is provided on the top of the second connecting seat 11, and the other end of the pressing rod 9 is locked in the threaded hole by a bolt 12. Since the mechanical part of the relay generates vibration when it is attracted, the stability of the electrical contact between the relay 6 to be tested and the relay connecting seat 7 can be improved by pressing the pressing rod 9.

[0028] The other end of the pressure rod 9 is provided with a waist-shaped hole 13 for installing a bolt 12, so that the bolt 12 can be conveniently screwed into the threaded hole when the pressure rod 9 presses the relay 6 to be tested.

[0029] An elastic material layer 14 is provided at the bottom of the pressure rod 9 to prevent the pressure rod 9 from rigidly contacting the relay to be tested 6. Preferably, the elastic material layer 14 is made of elastic cotton or silicone.

[0030] A cooling fan 15 is disposed on one side wall of the test cabinet 2 , and a cooling hole is disposed on the other side wall of the test cabinet 2 for cooling the inside of the test cabinet 2 .

[0031] The counter 4, the time controller 5, and the relay connector 7 are arranged horizontally and linearly on the test panel 3, wherein the relay connector 7 is located on the far right, so that the right hand can conveniently perform plugging / unplugging operations on the relay 6 to be tested.

[0032] Preferably, the model of the DC power supply module 1 of the utility model is E3631A, the model of the counter 4 is JDM11-6H, and the model of the time controller 5 is DH48S-S.

[0033] The above are only preferred implementations of the utility model. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the utility model, which will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A relay durability tester, comprising a DC power supply module (1), characterized in that: The invention also comprises a test cabinet (2), wherein a test panel (3) is provided on the front side of the test cabinet (2), wherein the test panel (3) is provided with a counter (4), a time controller (5), and a relay connection socket (7) for plugging in a relay to be tested (6); the relay connection socket (7) is provided with a coil pin and a normally open contact pin corresponding to the relay to be tested (6); the DC power supply module (1) is electrically connected to the coil pin of the relay connection socket (7) through the time controller (5); the normally open contact pin of the relay connection socket (7) is electrically connected to the input end of the counter (4); and the DC power supply module (1) is electrically connected to the power supply end of the counter (4); and the test panel (3) is provided with a pressing mechanism (8) for pressing the relay to be tested (6).

2. A relay durability tester according to claim 1, characterized in that: The clamping mechanism (8) comprises a pressure rod (9), a first connection seat (10) located on one side of the relay connection seat (7), and a second connection seat (11) located on the other side of the relay connection seat (7); the pressure rod (9) spans above the relay connection seat (7); one end of the pressure rod (9) is rotatably connected to the top of the first connection seat (10); a threaded hole is provided at the top of the second connection seat (11); and the other end of the pressure rod (9) is locked in the threaded hole by a bolt (12).

3. A relay durability tester according to claim 2, characterized in that: The other end of the pressure rod (9) is provided with a waist-shaped hole (13) for installing the bolt (12).

4. A relay durability tester according to claim 2, characterized in that: An elastic material layer (14) is provided at the bottom of the pressure rod (9).

5. A relay durability tester according to claim 4, characterized in that: The elastic material layer (14) is made of elastic cotton or silica gel.

6. A relay durability tester according to claim 1, characterized in that: A heat dissipation fan (15) is provided on one side wall of the test cabinet (2), and a heat dissipation hole is provided on the other side wall of the test cabinet (2).

7. A relay durability tester according to claim 1, characterized in that: The counter (4), the time controller (5), and the relay connection socket (7) are arranged laterally and linearly on the test panel (3), wherein the relay connection socket (7) is located on the far right.

8. A relay durability tester according to claim 1, characterized in that: The model of the DC power supply module (1) is E3631A.

9. A relay durability tester according to claim 1, characterized in that: The model of the counter (4) is JDM11-6H.

10. A relay durability tester according to claim 1, characterized in that: The model of the time controller (5) is DH48S-S.

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