CN112083326A

CN112083326A - Testing device

Info

Publication number: CN112083326A
Application number: CN202010827576.0A
Authority: CN
Inventors: 高雪峰; 谢勋; 张贤杰; 张丽君; 陈关关
Original assignee: Dongfeng Electric Drive Systems Co Ltd
Current assignee: Dongfeng Electric Drive Systems Co Ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2020-12-15
Anticipated expiration: 2040-08-17
Also published as: CN112083326B

Abstract

The invention discloses a test device, which is used for testing the reliability of a relay and comprises a base plate, a pressure output assembly and a relay mounting plate for mounting the relay; the pressure output assembly and the relay mounting plate are arranged at the top of the bottom plate; the pressure output assembly is used for applying pressure to the end part of the iron core of the relay arranged on the relay mounting plate; the relay is arranged on the relay mounting plate, and mechanical loads of different degrees are applied to the end part of the iron core of the relay through the pressure output assembly so as to simulate various adverse conditions faced by the relay in the actual use process; therefore, the fault reappearance of the relay is quickly realized, the test efficiency is improved, and the test effect is better; the testing device can quickly detect defects and weak links in the design and manufacture of the relay, and make improvement measures in a targeted manner, so that the production quality of products is improved, namely the reliability of the products is improved.

Description

Testing device

Technical Field

The invention relates to the field of testing devices, in particular to a testing device of a relay.

Background

A relay, also known as a relay, is an electronic control device having a control system (also known as an input loop) and a controlled system (also known as an output loop), which is commonly used in automatic control circuits, and which is actually an automatic switch that uses a smaller current to control a larger current. Therefore, the circuit plays the roles of automatic regulation, safety protection, circuit conversion and the like.

In order to ensure the production quality of the relay, the reliability of the relay is generally tested in the production process; the traditional relay reliability testing device generally takes a durability test as a main means, generally enables an internal element of a relay to repeat a certain mechanical action to cause the internal element of the relay to break down, then observes the position where the internal element of the relay breaks down, and judges defects and weak links of the relay in design and manufacture according to the position and the times of the repeated mechanical action of the internal element of the relay in the experimental process.

However, the traditional experimental device has a long experimental period and is difficult to complete in a short period, so that the experimental efficiency is low; meanwhile, the test effect is poor, the reliability problem of the relay is difficult to reproduce through tests, and failure modes such as contact adhesion and unsmooth pull-in of the relay are difficult to realize through traditional tests; therefore, a test device needs to be developed to solve the problems faced by the reliability test of the relay.

Disclosure of Invention

The invention provides a testing device, aiming at the problems of low testing efficiency and poor testing effect of the reliability testing device of a relay in the prior art.

The technical scheme for solving the technical problems is as follows: a test device is used for testing the reliability of a relay and comprises a bottom plate, a pressure output assembly and a relay mounting plate for mounting the relay; the pressure output assembly and the relay mounting plate are both arranged at the top of the bottom plate; the pressure output assembly is provided with a mandril which is used for applying pressure to the end part of an iron core of the relay which normally works and is arranged on the relay mounting plate.

Has the advantages that: the relay mounting plate is matched with the pressure output assembly, the normally working relay is mounted on the relay mounting plate, and mechanical loads of different degrees are applied to the end part of an iron core of the relay through the pressure output assembly so as to simulate various adverse conditions faced by the relay in the actual use process; the relay is enabled to rapidly generate the conditions of contact adhesion, motion clamping stagnation, contact ablation and the like through mechanical load, and the fault reappearance of the relay is rapidly realized, so that the test efficiency is improved; meanwhile, various problems in the use process of the relay are reproduced through experiments, and a good test effect is achieved; the testing device can quickly detect defects and weak links in the design and manufacture of the relay, quantitatively analyze the design parameters and the quality state of a product, and make improvement measures in a targeted manner, so that the production quality of the product is improved, namely the reliability of the product is improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a testing apparatus according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below: 1. a base plate; 2. a pressure output assembly; 3. a relay mounting plate; 4. a sliding assembly; 5. a displacement control assembly; 6. a limiting component; 7. a guide rail; 8. a connecting plate; 21. a pressure gauge; 22. a pressure regulator; 41. a sliding platform; 42. a slot bar; 51. mounting a bracket; 52. a screw rod; 53. a moving block; 54. a handle; 61. a compression nut; 62. a limiting bracket; 63. adjusting a rod; 64. and (7) a rubber pad.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

Referring to fig. 1, the invention is a testing device, the testing device is used for testing the reliability of a relay, and the testing device comprises a bottom plate 1, a pressure output assembly 2 and a relay mounting plate 3 matched with the pressure output assembly 2; the pressure output assembly 2 and the relay mounting plate 3 are both arranged at the top of the bottom plate 1; the relay is arranged on the relay mounting plate 3 through the mutual matching of the pressure output assembly 2 and the relay mounting plate 3, and mechanical loads of different degrees are applied to the end part of an iron core of the relay through the pressure output assembly 2 so as to simulate various adverse conditions faced by the relay in the actual use process; the relay is subjected to the conditions of contact adhesion, movement clamping stagnation, contact ablation and the like through mechanical load; recording a mechanical load value when the relay has faults, carrying out multiple tests, and observing the frequency of the relay with various faults; defects and weak links existing in the design and manufacture of the relay are detected quickly, product design parameters and the quality state of a real object are analyzed quantitatively, and improvement measures are made in a targeted mode.

In the present embodiment, the pressure output assembly 2 includes a pressure gauge 21 and a pressure regulator 22 fixedly connected to the pressure gauge 21; the pressure gauge 21 is used for reading the pressure value of the pressure regulator 22; the pressure gauge 21 may be an electronic pressure gauge or a mechanical pressure gauge, and in this embodiment, the electronic pressure gauge is preferably used because the electronic pressure gauge has higher precision; meanwhile, the pressure regulator 22 can be of a spring type, a cylinder type or other types, and the spring type is adopted in the embodiment, so that the pressure input is ensured by the spring type, and other input sources are not required to be added, so that the device is more concise in design; the pressure regulator 22 in this embodiment controls a plunger connected to a spring by adjusting the elastic force of the spring therein, and performs an experiment by pushing the plunger against the end of the relay core.

Furthermore, in order to adjust the position of the pressure output assembly 2, the distance between the pressure output assembly 2 and the relay mounting plate 3 can be set according to the requirement during the experiment; the relay reliability test device also comprises a sliding component 4 arranged at the top of the bottom plate 1, a displacement control component 5 used for adjusting the position of the sliding component 4 and a limiting component 6 used for fixing the sliding component 4; a guide rail 7 is arranged on the bottom plate 1, and the sliding component 4 is arranged on the guide rail 7 in a sliding manner; the pressure output assembly 2 is fixed on the sliding assembly 4; firstly, the position of the sliding component 4 is adjusted through the displacement control component 5, and after the position is adjusted, the position of the sliding component 4 is fixed through the limiting component, so that the purpose of adjusting the position of the pressure output component 2 is achieved.

Specifically, the sliding assembly 4 includes a sliding platform 41 and a slot rod 42 matched with the guide rail 7; a groove rod 42 is welded at the bottom of the sliding platform 41, and the groove rod 42 is connected with the guide rail 7 in a sliding manner; the top of the sliding platform 41 is also provided with two mounting plates for mounting the pressure output assembly 2; the two mounting plates are different in size, one end of the pressure gauge 21 is fixed on the larger mounting plate through a screw, and the other end of the pressure gauge is fixedly connected with the pressure regulator 22; the pressure regulator 22 is fixed at the bottom to the top of a smaller mounting plate.

In this embodiment, the displacement control assembly 5 includes a mounting bracket 51, a lead screw 52 and a moving block 53 cooperating with the lead screw 52; the mounting bracket 51 is U-shaped, and two ends of the screw rod 52 are fixed on the mounting bracket 51 through bearings; the moving block 53 is of a cubic structure, a threaded hole matched with the lead screw 52 is formed in the moving block 53, the lead screw 52 penetrates through the threaded hole to be in transmission connection with the moving block 53, and the moving block 53 is driven to move by rotating the lead screw 52; the moving block 53 is fixedly connected with the sliding platform 41 through the connecting plate 8; in order to facilitate the rotation control of the screw rod 52, a handle 54 is arranged at one end of the screw rod 52; meanwhile, in order to enable the moving block 53 to move more stably, a sliding rod is arranged at the bottom of the mounting bracket 51; the bottom of the moving block 53 is provided with a roller matched with the sliding rod; the roller is arranged on the sliding rod in a sliding manner.

Further, the limiting component 6 comprises a compression nut 61 and a limiting bracket 62 for mounting the compression nut 61; the limiting bracket 62 is C-shaped, the bottom of the limiting bracket is fixed on the bottom plate through a screw, the top of the limiting bracket is provided with a screw hole matched with the compression nut 61, and the compression nut 61 is arranged in the screw hole of the limiting bracket 62 and is vertical to the top of the grooved rod 42; the grooved rod 42 is arranged right below the compression nut 61, and the grooved rod 42 can be prevented from moving by the fact that the bottom of the compression nut 61 abuts against the top of the grooved rod 42; in order to make the compression nut 61 more convenient for manual operation, an adjusting rod 63 which rotates synchronously with the compression nut 61 is arranged at the head of the compression nut 61; and also to prevent damage to the grooved bars by direct contact of the compression nut 61 with the top of the grooved bars 42; in this embodiment, a rubber pad 64 is fixed to the bottom of the compression nut 61.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A test device is used for testing the reliability of a relay and is characterized by comprising a base plate (1), a pressure output assembly (2) and a relay mounting plate (3) for mounting the relay; the pressure output assembly (2) and the relay mounting plate (3) are arranged at the top of the bottom plate (1); the pressure output assembly (2) is provided with a mandril which is used for applying pressure to the end part of an iron core of the relay which normally works and is arranged on the relay mounting plate (3).

2. A testing device according to claim 1, characterized in that the pressure output assembly (2) comprises a pressure gauge (21) and a pressure regulator (22) fixedly connected to the pressure gauge (21); the pressure gauge (21) is used for reading the pressure value of the pressure regulator (22); the ejector rod is arranged at one end of the pressure regulator (22).

3. The testing device of claim 1, further comprising a sliding assembly (4) arranged on the top of the bottom plate (1), a displacement control assembly (5) for adjusting the position of the sliding assembly (4), and a limiting assembly (6) for fixing the sliding assembly (4); a guide rail (7) is arranged on the bottom plate (1), and the sliding assembly (4) is arranged on the guide rail (7) in a sliding manner; the pressure output assembly (2) is fixed on the sliding assembly (4).

4. A test device according to claim 3, characterized in that the sliding assembly (4) comprises a sliding platform (41) and a grooved bar (42) which is matched with the guide rail (7); the grooved rod (42) is fixed at the bottom of the sliding platform (41), and the grooved rod (42) is connected with the guide rail (7) in a sliding manner; the groove rod (42) is arranged under the limiting component (6), and the position of the groove rod (42) is fixed by controlling the limiting component (6).

5. A test device according to claim 4, characterized in that the displacement control assembly (5) comprises a mounting bracket (51), a lead screw (52) and a moving block (53) cooperating with the lead screw (52); two ends of the screw rod (52) are fixed on the mounting bracket (51) through bearings; the moving block (53) is in transmission connection with the lead screw (52), and the moving block (53) is fixedly connected with the sliding platform (41) through a connecting plate (8).

6. A test device according to claim 4, characterized in that the limiting assembly (6) comprises a compression nut (61) and a limiting bracket (62) for mounting the compression nut (61); the compression nut (61) is arranged on the limiting support (62) and is perpendicular to the top of the groove rod (42).

7. A test device according to claim 5, wherein the screw (52) is provided with a handle (54) at one end.

8. A test device according to claim 5, characterized in that the bottom of the mounting bracket (51) is provided with a slide bar; the bottom of the moving block (53) is provided with a roller matched with the sliding rod; the roller is arranged on the sliding rod in a sliding mode.

9. A test device according to claim 6, characterized in that the top of the compression nut (61) is provided with an adjustment rod (63).

10. A test device according to claim 6, characterized in that a rubber pad (64) is fixed to the bottom of the compression nut (61).