CN112083326B

CN112083326B - Test device

Info

Publication number: CN112083326B
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: 2023-06-20
Anticipated expiration: 2040-08-17
Also published as: CN112083326A

Abstract

The invention discloses a test device, which is used for testing the reliability of a relay, and comprises a bottom plate, a pressure output assembly and a relay mounting plate used 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; according to the invention, the relay is arranged on the relay mounting plate, and the pressure output assembly is used for applying mechanical loads to the end parts of the iron cores of the relay to different degrees so as to simulate various adverse conditions faced by the relay in the actual use process; thereby realizing the fault reproduction of the relay rapidly, improving the efficiency of the test and having better experimental effect; the test device can be used for rapidly detecting defects and weak links existing in relay design and manufacture, and improving measures can be formulated in a targeted manner, so that the production quality of products is improved, and the reliability of the products is improved.

Description

Test device

Technical Field

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

Background

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

In order to ensure the production quality of the relay, the relay is generally subjected to a reliability test in the production process; the traditional relay reliability test device generally takes a durability test as a main means, generally enables internal elements of the relay to repeat a certain mechanical action to enable the internal elements to fail, then observes the position where the internal elements fail, and judges defects and weak links existing in the design and manufacture of the relay according to the position and the number of times of repeated mechanical actions of the internal elements of the relay in the experimental process.

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

Disclosure of Invention

Aiming at the problems of low test efficiency and poor test effect of the reliability test device of the relay in the prior art, the invention provides the test device.

The technical scheme for solving the technical problems is as follows: a test device for testing reliability of a relay, the test device comprising 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 has a ram for applying pressure to the core end of a normally operating relay mounted on the relay mounting plate.

The beneficial effects are that: according to the invention, the relay which normally works is arranged on the relay mounting plate through the mutual matching of the pressure output assembly and the relay mounting plate, and the mechanical load with different degrees is applied to the iron core end part of the given 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, movement clamping stagnation, contact ablation and the like through mechanical load, so that the fault reproduction of the relay is rapidly realized, and the efficiency of a test is improved; meanwhile, various problems in the using process of the relay are reproduced through experiments, so that a good test effect is achieved; the test device can be used for rapidly detecting defects and weak links existing in relay design and manufacture, quantitatively analyzing product design parameters and physical quality states, and pertinently making improvement measures, so that the production quality of the product is improved, and the reliability of the product is improved.

Drawings

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

In the drawings, the list of components represented by the various numbers is as follows: 1. a bottom plate; 2. a pressure output assembly; 3. a relay mounting plate; 4. a sliding assembly; 5. a displacement control assembly; 6. a limit component; 7. a guide rail; 8. a connecting plate; 21. a pressure gauge; 22. a pressure regulator; 41. a sliding platform; 42. a grooved bar; 51. a mounting bracket; 52. a screw rod; 53. a moving block; 54. a handle; 61. a compression nut; 62. a limit bracket; 63. an adjusting rod; 64. and a rubber pad.

Detailed Description

The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.

Referring to fig. 1, the invention is a test device for testing reliability of a relay, the test 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 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 the mechanical load with different degrees is applied to the iron core end part of the given 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 enabled to generate contact adhesion, movement clamping stagnation, contact ablation and other conditions through mechanical load; recording the mechanical load value of the relay when the relay fails, testing for multiple times, and observing the frequency of various failures of the relay; defects and weak links existing in relay design and manufacture are detected rapidly, quantitative analysis is carried out on product design parameters and physical quality states, and improvement measures are formulated in a targeted manner.

In this 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 accuracy of the electronic pressure gauge is higher; meanwhile, the pressure regulator 22 can be spring type, cylinder type or other types, and the spring type is adopted in the embodiment, so that the pressure transmission is ensured by the spring type, and other input sources are not needed to be additionally arranged, so that the device is simpler in design; the pressure regulator 22 in this embodiment controls a plunger connected to the spring by adjusting the spring force of the spring therein, and experiments were performed by pushing the plunger against the end of the core of the relay.

Further, 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 experiments; 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 for adjusting the position of the sliding component 4 and a limiting component 6 for fixing the sliding component 4; the bottom plate 1 is provided with a guide rail 7, and the sliding component 4 is arranged on the guide rail 7 in a sliding way; 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 that is mutually 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 in sliding connection with the guide rail 7; 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 secured at the bottom to the top of the smaller block mounting plate.

In this embodiment, the displacement control assembly 5 includes a mounting bracket 51, a screw 52, and a moving block 53 cooperating with the screw 52; wherein 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 cube structure, a threaded hole matched with the screw rod 52 is formed in the moving block 53, the screw rod 52 penetrates through the threaded hole to be in transmission connection with the moving block 53, and the screw rod 52 is rotated to drive the moving block 53 to move; the moving block 53 is fixedly connected with the sliding platform 41 through the connecting plate 8; in order to more conveniently control the rotation of the screw rod 52, a handle 54 is arranged at one end of the screw rod 52; meanwhile, in order to make the movement of the moving block 53 smoother, 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 which is matched with the sliding rod; the roller is arranged on the slide bar in a sliding way.

Further, the limiting assembly 6 comprises a compression nut 61 and a limiting bracket 62 for installing the compression nut 61; the limiting bracket 62 is C-shaped, the bottom is fixed on the bottom plate through screws, the top is provided with screw holes matched with the compression nuts 61, and the compression nuts 61 are arranged in the screw holes of the limiting bracket 62 and are perpendicular to the top of the grooved bars 42; the groove bar 42 is arranged right below the compression nut 61, and the bottom of the compression nut 61 is propped against the top of the groove bar 42, so that the groove bar 42 can be prevented from moving; 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; while also preventing the compression nut 61 from damaging the channel bar 42 by direct contact with the top of the channel bar; in this embodiment, a rubber pad 64 is also fixed to the bottom of the compression nut 61.

The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

1. A test device for testing the reliability of a relay, characterized in that the test device comprises 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 push rod which is used for applying pressure to the end part of an iron core of a relay which is installed on the relay installation plate (3) and works normally; the test device further comprises a sliding component (4) arranged at the top of the bottom plate (1), a displacement control component (5) for adjusting the position of the sliding component (4) and a limiting component (6) for fixing the sliding component (4); the bottom plate (1) is provided with a guide rail (7), 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);

the pressure output assembly (2) comprises a pressure gauge (21) and a pressure regulator (22) fixedly connected with 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);

the sliding component (4) comprises a sliding platform (41) and a groove rod (42) which is matched with the guide rail (7); the groove rod (42) is fixed at the bottom of the sliding platform (41), and the groove rod (42) is in sliding connection with the guide rail (7); the groove rod (42) is arranged right below the limiting assembly (6), and the position of the groove rod (42) is fixed by controlling the limiting assembly (6);

the displacement control assembly (5) comprises a mounting bracket (51), a screw rod (52) and a moving block (53) matched with the screw rod (52); both 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 screw rod (52), and the moving block (53) is fixedly connected with the sliding platform (41) through a connecting plate (8);

the limiting assembly (6) comprises a compression nut (61) and a limiting bracket (62) for installing the compression nut (61); the compression nut (61) is arranged on the limit bracket (62) and is perpendicular to the top of the groove rod (42);

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 which is matched with the sliding rod; the roller is arranged on the sliding rod in a sliding way.

2. A test device according to claim 1, wherein one end of the screw (52) is provided with a handle (54).

3. A test device according to claim 1, characterized in that the top of the compression nut (61) is provided with an adjustment rod (63).

4. A test device according to claim 1, wherein a rubber pad (64) is fixed to the bottom of the compression nut (61).