Electromagnetic switch service life testing device

Abstract

The utility model discloses an electromagnetic switch service life testing device which comprises a testing table, a supporting frame and a flywheel are installed on the testing table, a starting motor and an electromagnetic switch to be tested are installed on the supporting frame, the supporting frame comprises a vertical plate and a transverse plate, the starting motor and the electromagnetic switch to be tested are installed on the vertical plate, and the flywheel is installed on the transverse plate. The axial direction of the starting motor is parallel to the axial direction of the flywheel, and the flywheel is installed on the rear side of the supporting frame. An X-direction moving mechanism used for adjusting the left-right position of the supporting frame and a Y-direction moving mechanism used for adjusting the front-back position of the supporting frame are further arranged on the testing table. The X-direction moving mechanism comprises a first sliding rail, a sliding seat and a first lead screw nut transmission mechanism, and the Y-direction moving mechanism comprises a second sliding rail and a second lead screw nut transmission mechanism. The electromagnetic switch service life testing device can adapt to service life tests of electromagnetic switches of different models.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic switch detection, in particular to a service life testing device for an electromagnetic switch. Background Technique

[0002] Simply put, an electromagnetic switch is a combination of an electromagnet and a switch. When the electromagnet coil is energized, an electromagnetic attraction force is generated, and the movable iron core pushes or pulls the switch contact to close, thereby connecting the controlled circuit. Electromagnetic switches are widely used in various industries. In the automotive industry, the functions of an electromagnetic switch are as follows: on the one hand, the movable iron core is moved by the electromagnetic attraction force to push or pull the pinion of the starting motor to engage with the flywheel gear, and on the other hand, the switch contact is pushed to close, so that the starting motor is energized and runs, and then drives the engine to start and run.

[0003] When developing new products of electromagnetic switches, a parameter that needs attention is the service life of the electromagnetic switch. Suppose the specified service life of the electromagnetic switch is 20,000 starts. If a failure occurs during the 8,000th start of the electromagnetic switch and it cannot work properly, it means that the electromagnetic switch fails to meet the life test requirements. When conducting the life test on the electromagnetic switch, the current method is to simply simulate the use environment of the electromagnetic switch, connect the electromagnetic switch to be tested with the corresponding starting motor and flywheel. On the one hand, when testing electromagnetic switches of different models, the pinions of their corresponding starting motors may have different sizes, and each time the installation positions of various components need to be redesigned according to the size. On the other hand, only one electromagnetic switch to be tested can be tested each time, and the test efficiency is low, which cannot meet the existing work requirements. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a service life testing device for an electromagnetic switch to adapt to the life tests of electromagnetic switches of different models.

[0005] To solve the above problems, the utility model adopts the following technical solutions:

[0006] A service life testing device for an electromagnetic switch, including a test bench, on which a support frame and a flywheel are installed. An starting motor and an electromagnetic switch to be tested are installed on the support frame. The support frame includes a vertical plate and a horizontal plate. The starting motor and the electromagnetic switch to be tested are installed on the vertical plate. The axial direction of the starting motor is parallel to the axial direction of the flywheel, and the flywheel is installed at the rear side of the support frame; an X-direction moving mechanism for adjusting the left and right positions of the support frame and a Y-direction moving mechanism for adjusting the front and rear positions of the support frame are further arranged on the test bench.

[0007] Optionally, the X-direction moving mechanism includes a first slide rail, a sliding seat, and a first lead screw-nut transmission mechanism. The first slide rail is fixed to the test bench in the left-right horizontal direction. The sliding seat is slidably connected to the first slide rail. The first lead screw-nut transmission mechanism includes a first lead screw shaft, a first nut, and a first lead screw support seat. The first lead screw support seat is fixed to the test bench. The first nut is fixedly connected to the sliding seat. The first lead screw shaft is arranged in the left-right horizontal direction and supported by the first lead screw support seat. One end of the first lead screw shaft is connected to a first driving member.

[0008] Optionally, the Y-direction moving mechanism includes a second slide rail and a second lead screw-nut transmission mechanism. The second slide rail is fixed to the sliding seat in the front-back horizontal direction. The cross plate is slidably connected to the second slide rail. The second lead screw-nut transmission mechanism includes a second lead screw shaft, a second nut, and a second lead screw support seat. The second lead screw support seat is fixed to the sliding seat. The second nut is fixedly connected to the cross plate. The second lead screw shaft is arranged in the front-back horizontal direction and supported by the second lead screw support seat. One end of the second lead screw shaft is connected to a second driving member.

[0009] Optionally, two support frames are symmetrically arranged on the test bench, and the flywheel is located behind the two support frames.

[0010] Optionally, a protective cover is further arranged on the test bench, and the protective cover is located behind the support frame.

[0011] Optionally, a heat dissipation device is further included. The heat dissipation device includes a blower and an air duct, and the air outlet of the air duct faces the starting motor.

[0012] Optionally, protective doors are arranged around the test bench, and the protective doors are of a grid structure.

[0013] Adopting the above technical solutions, the present utility model has the following advantages:

[0014] The present utility model can conveniently adjust the relative position between the pinion of the starting motor and the flywheel through the X-direction moving mechanism and the Y-direction moving mechanism, which is beneficial to adapting electromagnetic switches of different models for testing without having to separately design a test device with corresponding dimensions. In addition, two workstations are set for testing. During the test interval of one electromagnetic switch to be tested, another switch to be tested can be tested, and the test efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of one embodiment of the present utility model;

[0016] Figure 2 is Figure 1 the schematic structural diagram of the Y-direction moving mechanism in

[0017] Reference Numerals: 1, test bench; 21, vertical plate; 22, horizontal plate; 3, flywheel; 4, starting motor; 5, electromagnetic switch to be tested; 61, first slide rail; 62, sliding seat; 63, first lead screw shaft; 64, first nut; 65, first lead screw support seat; 66, first driving member; 71, second slide rail; 72, second lead screw shaft; 73, second nut; 74, second lead screw support seat; 75, second driving member; 8, protective cover; 9, fan; 10, air duct; 11, protective door. Detailed Embodiment

[0018] To make the technical objectives, technical solutions and beneficial effects of the present utility model clearer, the following further describes the technical solutions of the present utility model with reference to the Figure 1-2 accompanying drawings and specific embodiments. Embodiment

[0019] An electromagnetic switch life test device includes a test bench 1, on which a support frame and a flywheel 3 are installed. A starting motor 4 and an electromagnetic switch 5 to be tested are installed on the support frame. The support frame includes a vertical plate 21 and a horizontal plate 22. The starting motor 4 and the electromagnetic switch 5 to be tested are installed on the vertical plate 21. The axial direction of the starting motor 4 is parallel to the axial direction of the flywheel 3, and the flywheel 3 is installed at the rear side of the support frame. An X-direction moving mechanism for adjusting the left and right positions of the support frame and a Y-direction moving mechanism for adjusting the front and rear positions of the support frame are further provided on the test bench 1.

[0020] The working principle is as follows: After the electromagnetic switch 5 to be tested and the starting motor 4 are powered on, the pinion of the starting motor 4 extends under the action of the electromagnetic switch and meshes with the flywheel 3, driving the flywheel 3 to rotate. This completes one start-up action of the electromagnetic switch 5 to be tested. The life test of the electromagnetic switch needs to repeat this start-up action until the preset service life is reached. For different electromagnetic switch products, the specifications of the corresponding starting motor 4 will also change, manifested as: different pinion diameters and different strokes of the pinion extending under the action of the electromagnetic switch. At this time, by adjusting the left and right positions and the front and rear positions of the support frame through the X-direction moving mechanism and the Y-direction moving mechanism, it can be adapted to the diameter and the extending stroke of the pinion of the starting motor 4. When powered on, the pinion of the starting motor 4 and the flywheel 3 can smoothly complete the meshing and carry out the test work.

[0021] Further, as one embodiment of the present utility model, the X-direction moving mechanism includes a first slide rail 61, a sliding seat 62, and a first lead screw nut transmission mechanism. The first slide rail 61 is fixed on the test bench 1 in the left-right horizontal direction. The sliding seat 62 is slidably connected to the first slide rail 61. The first lead screw nut transmission mechanism includes a first lead screw shaft 63, a first nut 64, and a first lead screw support seat 65. The first lead screw support seat 65 is fixed to the test bench 1. The first nut 64 is fixedly connected to the sliding seat 62. The first lead screw shaft 63 is arranged in the left-right horizontal direction and is supported by the first lead screw support seat 65. One end of the first lead screw shaft 63 is connected to a first driving member 66. In this embodiment, the first driving member 66 is a handwheel. When it is necessary to adjust the position of the support frame through the X-direction moving mechanism, rotate the handwheel, and the support frame can be driven to move left and right through the first lead screw nut transmission mechanism, so that the diameter of the pinion of the starting motor 4 is adapted to the flywheel 3. In other embodiments, the first driving member 66 can also be an electric rotating device.

[0022] Further, as one embodiment of the present utility model, as Figure 2 shown, the Y-direction moving mechanism includes a second slide rail 71 and a second lead screw nut transmission mechanism. The second slide rail 71 is fixed on the sliding seat 62 in the front-rear horizontal direction. The cross plate 22 is slidably connected to the second slide rail 71. The second lead screw nut transmission mechanism includes a second lead screw shaft 72, a second nut 73, and a second lead screw support seat 74. The second lead screw support seat 74 is fixed to the sliding seat 62. The second nut 73 is fixedly connected to the cross plate 22. The second lead screw shaft 72 is arranged in the front-rear horizontal direction and is supported by the second lead screw support seat 74. One end of the second lead screw shaft 72 is connected to a second driving member 75. In this embodiment, the first driving member 66 is a handwheel. When it is necessary to adjust the position of the support frame through the Y-direction moving mechanism, rotate the handwheel, and the support frame can be driven to move back and forth through the second lead screw nut transmission mechanism, so that the extension stroke of the pinion of the starting motor 4 is adapted to the position of the flywheel 3.

[0023] Further, as one embodiment of the present utility model, two support frames are symmetrically arranged on the test bench 1, and the flywheel 3 is located behind the two support frames. When performing the life test on the electromagnetic switch, it is necessary to repeatedly repeat the starting action of the electromagnetic switch, and there needs to be a certain gap between every two starting actions. By setting two support frames, two electromagnetic switches 5 to be tested can be respectively installed, and the life tests of the two electromagnetic switches 5 to be tested can be alternately carried out, making full use of the test gap of the electromagnetic switches 5 to be tested.

[0024] Further, as one embodiment of the present utility model, a protective cover 8 is also provided on the test bench 1. The protective cover 8 is located behind the support frame. The rotation of the pinion of the starting motor 4 and the flywheel 3 are both within the protective cover 8, improving the safety of the test process.

[0025] Further, as one embodiment of the present utility model, it further includes a heat dissipation device, which includes a fan 9 and an air duct 10. The air outlet of the air duct 10 faces the starting motor 4. Since the starting motor 4 runs frequently and generates heat, the heat dissipation device can take away a certain amount of heat, facilitating the smooth progress of the test process.

[0026] Further, as one embodiment of the present utility model, protective doors 11 are provided around the test bench 1, further improving test safety. The protective doors 11 are of a grid structure, facilitating observation.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0029] The above embodiments do not impose any formal restrictions on the shape, material, structure, etc. of the present utility model. Any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present utility model all belong to the protection scope of the technical solution of the present utility model.

[0030] It should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments understandable to those skilled in the art.

Claims

1. An electromagnetic switch life test device, comprising a test bench, on which a support frame and a flywheel are installed, and on the support frame, a starting motor and an electromagnetic switch to be tested are installed, characterized in that: The support frame includes a vertical plate and a horizontal plate. The starting motor and the electromagnetic switch to be tested are installed on the vertical plate. The axial direction of the starting motor is parallel to the axial direction of the flywheel, and the flywheel is installed at the rear side of the support frame. An X-direction moving mechanism for adjusting the left-right position of the support frame and a Y-direction moving mechanism for adjusting the front-rear position of the support frame are also provided on the test bench.

2. The electromagnetic switch life test device according to claim 1, wherein: The X-direction moving mechanism includes a first slide rail, a sliding seat, and a first lead screw-nut transmission mechanism. The first slide rail is fixed on the test bench along the left-right horizontal direction. The sliding seat is slidably connected to the first slide rail. The first lead screw-nut transmission mechanism includes a first lead screw shaft, a first nut, and a first lead screw support seat. The first lead screw support seat is fixed to the test bench. The first nut is fixedly connected to the sliding seat. The first lead screw shaft is arranged along the left-right horizontal direction and is supported by the first lead screw support seat. One end of the first lead screw shaft is connected with a first driving member.

3. An electromagnetic switch life test device according to claim 2, characterized in that: The Y-direction moving mechanism includes a second slide rail and a second lead screw-nut transmission mechanism. The second slide rail is fixed on the sliding seat along the front-rear horizontal direction. The horizontal plate is slidably connected to the second slide rail. The second lead screw-nut transmission mechanism includes a second lead screw shaft, a second nut, and a second lead screw support seat. The second lead screw support seat is fixed to the sliding seat. The second nut is fixedly connected to the horizontal plate. The second lead screw shaft is arranged along the front-rear horizontal direction and is supported by the second lead screw support seat. One end of the second lead screw shaft is connected with a second driving member.

4. An electromagnetic switch life test device according to claim 1, characterized in that: Two support frames are symmetrically arranged on the test bench, and the flywheel is located at the rear side of the two support frames.

5. An electromagnetic switch life test device according to any one of claims 1 to 4, characterized in that: A protective cover is also provided on the test bench, and the protective cover is located at the rear side of the support frame.

6. An electromagnetic switch life test device according to any one of claims 1 to 4, characterized in that: It further includes a heat dissipation device, which includes a blower and an air duct. The air outlet of the air duct faces the starting motor.

7. An electromagnetic switch life test device according to any one of claims 1 to 4, characterized in that: Protective doors are arranged around the test bench, and the protective doors are of a grid structure.

Images