A switch contact pressure tester

Abstract

This utility model relates to the field of pressure testing instrument technology, specifically disclosing a switch contact pressure tester, including a tester assembly, a second snap-fit ​​component, and a third snap-fit ​​component. A cover plate is hinged to the rear end of the tester assembly, and a first snap-fit ​​component is provided at the front end of the cover plate. When the testing process is transferred to the inside of the tester assembly, the cover plate can be closed to enhance stability and reduce external influences. The first, second, third, and fourth connecting rods are then threaded together for easy and quick assembly when needed. A fixing plate is fixedly connected to the tester assembly, and a bracket is installed at the bottom of the tester assembly, allowing for easy adjustment of the tester assembly's height according to user needs. Assembling an external support frame facilitates height adjustment and enhances stability of the testing device, ensuring accurate probe positioning and mechanical stability during testing.

Description

Technical Field

[0001] This utility model relates to the field of pressure testing instrument technology, specifically a switch contact pressure testing instrument. Background Technology

[0002] A switch contact pressure tester is a specially designed portable precision measuring instrument. Its core function is to accurately measure and evaluate the actual contact pressure of the moving and stationary contacts of electrical switchgear, such as circuit breakers, disconnectors, and contactors, in the closed state. Its core purpose is to ensure that the contact system has reliable, sufficient, and design-compliant contact pressure to prevent increased contact resistance and overheating due to insufficient pressure, or excessive wear or mechanical damage due to excessive pressure. This ensures the safe and stable operation of switchgear, its rated current carrying capacity, and its ability to effectively interrupt fault currents. It is an indispensable diagnostic tool in the preventive testing and maintenance of power equipment.

[0003] However, traditional switch contact pressure testers require different testing equipment for different specifications or types of switch contacts during the testing process. Frequent changes to different testing devices reduce testing efficiency. Furthermore, during the testing process, operators hold the testing device directly to test the switch contacts. Affected by environmental factors such as temperature, the handheld testing device may shake, lacking mechanical stability. This can lead to human-induced errors in probe positioning and testing accuracy, thus reducing the reliability of pressure measurement data. Utility Model Content

[0004] The purpose of this invention is to provide a switch contact pressure tester to solve the problems mentioned in the background art, such as the need to frequently change the testing device for different types and sizes of switch contacts during the testing process, which reduces the testing efficiency, and the possibility of shaking when the operator holds the testing device, which lacks mechanical stability and causes human error in the positioning and testing accuracy of the probe, thereby reducing the reliability of the pressure measurement data.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a switch contact pressure tester, comprising: a tester assembly, a second snap-fit ​​component and a third snap-fit ​​component, wherein a cover plate is hinged to the rear end of the tester assembly, and a first snap-fit ​​component is provided at the front end of the cover plate;

[0006] The invention is characterized by the following features: a third connecting rod is included; a first test interface is provided at the rear end of one side of the upper surface of the tester assembly; a second test interface is provided at the front end of one side of the upper surface of the tester assembly; a display screen is provided in the middle of the upper surface of the tester assembly; a controller is provided on the side of the upper surface of the tester assembly away from the first test interface; a control button is provided at the front end of the upper surface of the tester assembly; the first connecting rod is snapped into the interior of the second snap-fit ​​component; the second connecting rod is snapped into the interior of the third snap-fit ​​component; the first connecting rod and the second connecting rod are fixedly connected by threads; a hinge is provided at the lower end of the third connecting rod; and a support rod is hinged at the lower end of the hinge.

[0007] The front end of the tester assembly is hinged with a switch door, and a baffle is fixedly connected inside the tester assembly.

[0008] The tester component has a storage box inside, and the storage box has a first placement slot inside.

[0009] The cover plate has a second placement groove on its inner wall, and the lower end of each support rod is fixedly connected with a reinforcing pad.

[0010] The tester components are made of 17-4PH stainless steel.

[0011] The first connecting rod, the second connecting rod, the third connecting rod, and the fourth connecting rod are all made of tungsten-cobalt cemented carbide.

[0012] The upper end of the third connecting rod is threadedly connected to the fourth connecting rod, and the upper end of the fourth connecting rod is fixedly connected to the fixing plate. The tester assembly and the fixing plate are fixedly connected by threads.

[0013] This utility model has at least the following beneficial effects:

[0014] When the detection process is transferred to the internal testing instrument assembly, a cover plate can be placed to enhance stability and reduce external influences. The first, second, third, and fourth connecting rods are then threaded together for easy and quick assembly when needed. A fixing plate secures the assembly to the testing instrument assembly, and a bracket is installed at the bottom of the assembly, allowing for easy height adjustment according to user needs. Assembling an external support frame facilitates height adjustment and enhances stability of the testing device, ensuring accurate probe positioning and mechanical stability during testing, reducing human error, and improving the reliability of pressure measurement data.

[0015] By setting the testing device as a box, the cover is opened during testing. The upper surface of the tester component is equipped with various types of first and second test interfaces, which support the testing of contact pressure of different specifications or types of contacts. This expands the applicability of the instrument and allows for the completion of diverse testing tasks without frequent replacement of parts. Furthermore, the display screen, controller, and control buttons work together to achieve real-time visualization of pressure data and one-click operation, simplifying the testing process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the working state of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 3 This is a partial three-dimensional schematic diagram of the present invention;

[0019] Figure 4 This is a side view of the present invention;

[0020] Figure 5 This is a top view of the present invention.

[0021] In the diagram: 1. Tester assembly; 2. Cover plate; 3. First snap-fit ​​connector; 4. Second snap-fit ​​connector; 5. Third snap-fit ​​connector; 6. First test interface; 7. Second test interface; 8. Display screen; 9. Controller; 10. Control button; 11. First connecting rod; 12. Second connecting rod; 13. Third connecting rod; 14. Fourth connecting rod; 15. Fixing plate; 16. Hinge connector; 17. Support rod; 18. Opening / closing door; 19. Baffle; 20. Storage box; 21. First placement slot; 22. Second placement slot; 23. Reinforcing pad. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] Please see Figures 1 to 5 The present invention provides a technical solution: a switch contact pressure tester, comprising: a tester assembly 1, a second snap-fit ​​component 4 and a third snap-fit ​​component 5, wherein a cover plate 2 is hinged to the rear end of the tester assembly 1, and a first snap-fit ​​component 3 is provided at the front end of the cover plate 2.

[0025] It also includes a third connecting rod 13. A first test interface 6 is provided at the rear end of one side of the upper surface of the tester assembly 1, and a second test interface 7 is provided at the front end of one side of the upper surface of the tester assembly 1. A display screen 8 is provided in the middle of the upper surface of the tester assembly 1. A controller 9 is provided on the side of the upper surface of the tester assembly 1 away from the first test interface 6. A control button 10 is provided at the front end of the upper surface of the tester assembly 1. The first connecting rod 11 is snapped into the inside of the second snap-fit ​​4, and the second connecting rod 12 is snapped into the inside of the third snap-fit ​​5. The first connecting rod 11 and the second connecting rod 12 are fixedly connected by threads. A hinge 16 is provided at the lower end of the third connecting rod 13, and a support rod 17 is hinged to the lower end of the hinge 16. When testing is required, the switch contact to be tested is placed in the first test interface 6 or the second test interface 7 according to its type. Interface 7, start control button 10. If the surrounding environment is poor, close cover 2 to allow the device to test the switch contacts to be tested. The test data is displayed on display screen 8. After one test is completed, the staff can place the switch contacts with qualified and unqualified test data into the storage box 20 respectively. The qualified and unqualified switch contacts can also be placed into the first placement slot 21 according to different types for distinction. When height adjustment is required, the first connecting rod 11, the second connecting rod 12, the third connecting rod 13 and the fourth connecting rod 14 are taken out from the first snap-fit ​​3, the second snap-fit ​​4 and the third snap-fit ​​5. The third connecting rod 13 and the fourth connecting rod 14 are threaded together and fixed to the bottom of the tester assembly 1 by the fixing plate 15, thereby adjusting the tester assembly 1 to the required height for testing.

[0026] Example 2

[0027] The front end of the tester assembly 1 is hinged with a switch door 18, and the inside of the tester assembly 1 is fixedly connected with a baffle 19. The switch door 18 is hinged to facilitate the opening of the inside of the tester assembly 1 when it is in use, and it protects the inside when it is closed. The baffle 19 is used to separate the inside of the tester assembly 1 for placing different contacts.

[0028] The tester component 1 has a storage box 20 inside, and the storage box 20 has a first placement slot 21 inside. The storage box 20 and the first placement slot 21 make it convenient for staff to place different types of contacts or distinguish between those that have been tested and those that have not.

[0029] The inner wall of the cover plate 2 is provided with a second placement groove 22, and the lower end of the support rod 17 is fixedly connected with a reinforcing pad 23. The second placement groove 22 makes it easy for workers to place the required parts and to quickly retrieve them during use. The reinforcing pad 23 increases the friction between the support rod 17 and the ground, thereby improving the protective performance.

[0030] The material of tester component 1 is 17-4PH stainless steel, which has ultra-high strength, excellent corrosion resistance and excellent process adaptability.

[0031] The first connecting rod 11, the second connecting rod 12, the third connecting rod 13, and the fourth connecting rod 14 are all made of tungsten cobalt cemented carbide, which has extreme hardness and super wear resistance.

[0032] The upper end of the third connecting rod 13 is threadedly connected to the fourth connecting rod 14, and the upper end of the fourth connecting rod 14 is fixedly connected to the fixing plate 15. The tester assembly 1 and the fixing plate 15 are fixedly connected by threads, so that when the support device is needed, it can be quickly removed and fixed to the lower part of the tester assembly 1 for operation.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A switch contact pressure tester, comprising: The tester assembly includes a second connector and a third connector. The rear end of the tester assembly is hinged to a cover plate, and the front end of the cover plate is provided with a first connector. The invention is characterized by the following features: it further includes a third connecting rod; a first test interface is provided at the rear end of one side of the upper surface of the tester assembly; a second test interface is provided at the front end of one side of the upper surface of the tester assembly; a display screen is provided in the middle of the upper surface of the tester assembly; a controller is provided on the side of the upper surface of the tester assembly away from the first test interface; a control button is provided at the front end of the upper surface of the tester assembly; the first connecting rod is snapped into the interior of the second snap-fit ​​member; the second connecting rod is snapped into the interior of the third snap-fit ​​member; the first connecting rod and the second connecting rod are fixedly connected by threads; a hinge is provided at the lower end of the third connecting rod; and a support rod is hinged to the lower end of the hinge.

2. The switch contact pressure tester according to claim 1, characterized in that: The front end of the tester assembly is hinged with a switch door, and a baffle is fixedly connected inside the tester assembly.

3. The switch contact pressure tester according to claim 1, characterized in that: The testing instrument assembly has a storage box inside, and the storage box has a first placement slot inside.

4. The switch contact pressure tester according to claim 2, characterized in that: The inner wall of the cover plate is provided with a second placement groove, and the lower end of each support rod is fixedly connected with a reinforcing pad.

5. The switch contact pressure tester according to claim 1, characterized in that: The components of the tester are made of 17-4PH stainless steel.

6. The switch contact pressure tester according to claim 1, characterized in that: The first connecting rod, the second connecting rod, the third connecting rod, and the fourth connecting rod are all made of tungsten-cobalt cemented carbide.

7. The switch contact pressure tester according to claim 1, characterized in that: The upper end of the third connecting rod is threadedly connected to the fourth connecting rod, and the upper end of the fourth connecting rod is fixedly connected to the fixing plate. The tester assembly and the fixing plate are fixedly connected by threads.

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