Detection tool for 35kV switch cabinet
By designing a 35kV switchgear testing fixture that includes a frame, connection components, fixing components, support components, and limit components, the problems of loose and tangled wire harnesses were solved, achieving stable connection and convenient organization, thus improving testing efficiency and maintenance convenience.
Patent Information
- Application Number
- CN202423098413.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-16
AI Technical Summary
Existing switchgear testing fixtures are prone to loosening when connecting wire harnesses, leading to unstable testing. Furthermore, the wire harnesses are easily tangled and messy, and the fixing methods are cumbersome, affecting the efficiency of subsequent disassembly and assembly.
A testing fixture comprising a frame, connecting components, fixing components, supporting components, and limiting components was designed. Through elastic clamping and clamping plate structure, it achieves stable connection and arrangement of wire harnesses and is adaptable to wire harnesses of different diameters.
It improves the stability and convenience of the testing process, facilitates the fixing and organization of wire harnesses, adapts to wire harnesses of different diameters, and simplifies subsequent inspection and maintenance.
Smart Images

Figure CN223650645U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of switchgear testing, specifically a testing fixture for 35kV switchgear. Background Technology
[0002] A switchgear is an electrical device. External power lines first enter the main control switch inside the cabinet, then the branch control switches, each branch circuit configured according to its needs; such as instruments, automatic control systems, motor magnetic switches, various AC contactors, etc. Some switchgear also have high-voltage and low-voltage compartments, and high-voltage busbars, such as in power plants. Some also have underfrequency load shearing mechanisms to protect key equipment. However, during long-term operation, various objective factors can cause problems such as cable joint faults, busbar faults, contact faults, operating mechanism faults, or surge arrester faults in switchgear after installation and commissioning. Therefore, testing instruments are needed during installation to check the operation of the switchgear.
[0003] Existing switchgear testing fixtures have limitations. If the connecting wire harnesses are loose, it will affect the testing. In addition, when there are too many wires, the wire harnesses will become tangled and messy, making it impossible to fix them. If the fixing method is too cumbersome, it will be inconvenient for subsequent disassembly and assembly. Therefore, we propose a testing fixture for 35kV switchgear. Utility Model Content
[0004] The purpose of this invention is to provide a testing fixture for a 35kV switchgear to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a testing fixture for a 35kV switchgear, comprising a frame, a connecting component, a fixing component, a supporting component, and a limiting component. The connecting component is located at the center of the rear end of the frame, and fixing components are located on both sides of the connecting component. The supporting component is located on the side of the fixing component, and a limiting component is located in the center of the supporting component. The connecting component comprises an end seat, a plug port, a connector, and an elastic plate. The plug port is located in the center of the end seat, and a connector is located on the side of the plug port. An elastic plate is located on the side of the connector.
[0006] Furthermore, the connector and the plug port are matched, and the elastic plate wraps around the connector.
[0007] Furthermore, the fixing component includes a fixing block, a top cover, a slot, and a first lead hole, and the top cover is provided on the top edge of the fixing block, the slot is provided in the middle of the fixing block, and the first lead hole is provided on the side of the slot.
[0008] Furthermore, the support assembly includes a crossbeam, a locking block, and a second lead hole, with a locking block provided on one side of the top of the crossbeam and a second lead hole provided on the side of the locking block.
[0009] Furthermore, the limiting component includes a retaining plate, a groove, a protrusion, and an elastic buckle, wherein the retaining plate has a groove inside, a protrusion is provided on the side of the groove, and elastic buckles are provided inside both ends of the retaining plate.
[0010] Furthermore, the protrusions are symmetrically arranged along the grooves, and the protrusions are connected to the elastic buckle.
[0011] Furthermore, the frame includes a body, a storage cavity, and supports, with the storage cavity located in the middle of the body and supports located on both sides of the bottom of the body.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: the testing fixture is frame-type, so it needs to be placed in front of the switch cabinet when testing. The crossbar is installed at the rear end and is connected to both the testing fixture and the switch cabinet through the connecting wire harness head. Then the machine body performs testing and observation. In order to avoid the plug shaking during docking, an elastic concave frame is set in the middle of the end seat to elastically press the connector head. The clamping plate is set behind the testing machine body fixture through the crossbar and is parallel to the port. Since each protrusion is set independently, not only can the wire harness be installed according to the requirements, but it can also adapt to wire harnesses of different diameters.
[0013] The testing fixture is frame-type, so it needs to be placed in front of the switch cabinet when testing it. Then, it is connected to both the switch cabinet and the switch cabinet through the connecting wire harness head. The connection is completed through the plug port at the rear of the testing fixture. After that, the switch cabinet is inspected and observed through the machine body. To prevent the plug from shaking during the connection, a flexible concave frame is set in the middle of the end seat to elastically press the connector head, increase stability and prevent shaking.
[0014] The elastic buckle and the protrusion are integrated and are set inside both sides of the clamping plate. The clamping plate is set at the rear of the testing machine tooling via a crossbar, parallel to the port. Since each protrusion is set independently, not only can wire harnesses be installed according to requirements, making it convenient to organize, but also when the testing tooling and switch cabinet are tested, there are many wire harnesses to connect, which can accommodate wire harnesses of different diameters, making it convenient for subsequent maintenance and repair. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0016] Figure 2 This is a schematic diagram of the rear view structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the limiting component structure of this utility model.
[0018] In the diagram: 1. Frame; 101. Body; 102. Storage cavity; 103. Support; 2. Connecting assembly; 201. End seat; 202. Insertion port; 203. Connector; 204. Elastic plate; 3. Fixing assembly; 301. Fixing block; 302. Top cover; 303. Slot; 304. First lead hole; 4. Supporting assembly; 401. Cross frame; 402. Locking block; 403. Second lead hole; 5. Limiting assembly; 501. Locking plate; 502. Groove; 503. Protrusion; 504. Elastic buckle. Detailed Implementation
[0019] like Figure 1-2As shown, a testing fixture for a 35kV switchgear includes a frame 1, a connecting assembly 2, a fixing assembly 3, a support assembly 4, and a limiting assembly 5. The connecting assembly 2 is located at the center of the rear end of the frame 1, and fixing assemblies 3 are located on both sides of the connecting assembly 2. Support assemblies 4 are located on the sides of the fixing assemblies 3, and a limiting assembly 5 is located in the center of the support assembly 4. The connecting assembly 2 includes an end base 201, a plug port 202, a connector 203, and an elastic plate 204. The plug port 202 is located in the center of the end base 201, and the connector 203 is located on the side of the plug port 202. The elastic plate 204 is located on the side of the connector 203. The connector 203 and the plug port 202 are matched, and the elastic plate 204 wraps around the connector 203. The testing fixture is a frame type, so it needs to be placed in front of the switch cabinet when testing it. Then, it is connected to both through the connecting wire harness head, and then docked through the plug port 202 at the rear of the testing fixture to complete the docking process. After that, it is inspected and observed through the body 101. In order to prevent the plug from shaking during docking, an elastic concave frame is provided in the middle of the end seat 201, so as to elastically press the connector 203, increase stability, and prevent shaking. The fixing component 3 includes a fixing block 301, a top cover 302, a slot 303, and a first lead hole 304, and the fixing block 301... A top cover 302 is provided on the top side of component 1. A slot 303 is provided in the middle of the fixing block 301, and a first lead hole 304 is provided on the side of the slot 303. The top cover 302 is located on the side of the fixing block 301. The cross frame 401 is embedded in the slot 303 by the slot 402 and is supported by the top cover 302 to prevent it from tilting. At the same time, the first lead holes 304 on both sides are aligned with the built-in second lead hole 403 and are fixed by fasteners to prevent the cross frame 401 from loosening and to increase stability. The support component 4 includes a cross frame 401, a slot 402 and a second lead hole 403, and a slot 402 is provided on one side of the top of the cross frame 401. The side of block 402 is provided with a second lead hole 403. When not needed, the cross frame 401 is placed in the storage cavity 102. When needed, the cross frame 401 is embedded in the slot 303 of the fixing block 301 by the locking block 402. Then, the cross frame 401 is fixed by fasteners inserted through the lead holes of both. The locking plate 501 is set in the middle of the cross frame 401. Therefore, the connector 203 and wire harness connected to the switch cabinet are organized and limited by the locking plate 501. The frame 1 includes a body 101, a storage cavity 102 and a support 103. The storage cavity 102 is provided in the middle of the body 101 and the supports 103 are provided on both sides of the bottom end of the body 101.
[0020] like Figure 3As shown, a testing fixture for a 35kV switchgear includes a limiting component 5 comprising a clamping plate 501, a groove 502, a protrusion 503, and an elastic buckle 504. The clamping plate 501 has a groove 502 inside, and a protrusion 503 is provided on the side of the groove 502. The elastic buckle 504 is provided inside both ends of the clamping plate 501. The protrusions 503 are symmetrically arranged along the groove 502 and are connected to the elastic buckles 504. The elastic buckles 504 and the protrusions 503 are integrated and are all located inside both sides of the clamping plate 501. The clamping plate 501 is set behind the testing fixture 101 via a crossbar 401, parallel to the port. Since each protrusion 503 is independently set, it can not only install wire harnesses according to requirements, making it convenient to organize, but also accommodates a large number of wire harnesses when the testing fixture is used to test the switchgear, and can adapt to wire harnesses of different diameters, facilitating subsequent maintenance by the staff.
[0021] Working principle: First, the testing fixture is a frame type, so it needs to be placed in front of the cabinet when testing the switch cabinet. When not needed, the horizontal frame 401 is placed in the storage cavity 102. When needed, the horizontal frame 401 is embedded in the slot 303 of the fixing block 301 through the card block 402. Then, the horizontal frame 401 is fixed by fasteners inserted through the holes of both.
[0022] Next, the wire harness head is connected to both the testing fixture and the switch cabinet. The test fixture is then docked through the plug port 202 at the rear. The machine body 101 is then used for testing and observation. To prevent the plug from shaking during docking, an elastic concave frame is provided in the middle of the end seat 201 to elastically press against the connector 203.
[0023] The card plate 501 is set behind the tooling of the testing machine body 101 via the crossbar 401, parallel to the port. Since each protrusion 503 is set independently, not only can wire harnesses be installed according to requirements, which is convenient for organization, but also when the testing tooling and switch cabinet are tested, there are many wire harnesses connected, which can adapt to wire harnesses of different diameters, making it convenient for subsequent maintenance and repair.
[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A testing fixture for a 35kV switchgear, comprising a frame (1), a connecting assembly (2), a fixing assembly (3), a supporting assembly (4), and a limiting assembly (5), characterized in that: A connecting component (2) is provided at the middle of the rear end of the frame (1), and a fixing component (3) is provided on both sides of the connecting component (2). A supporting component (4) is provided on the side of the fixing component (3), and a limiting component (5) is provided in the middle of the supporting component (4). The connecting component (2) includes an end seat (201), a plug port (202), a connector (203), and an elastic plate (204). The plug port (202) is provided in the middle of the end seat (201), and a connector (203) is provided on the side of the plug port (202). An elastic plate (204) is provided on the side of the connector (203).
2. The testing fixture for a 35kV switchgear according to claim 1, characterized in that: The connector (203) is matched with the insertion port (202), and the elastic plate (204) wraps around the connector (203).
3. The testing fixture for a 35kV switchgear according to claim 1, characterized in that: The fixing component (3) includes a fixing block (301), a top cover (302), a slot (303), and a first lead hole (304). The top cover (302) is provided on the top side of the fixing block (301), the slot (303) is provided in the middle of the fixing block (301), and the first lead hole (304) is provided on the side of the slot (303).
4. The testing fixture for a 35kV switchgear according to claim 1, characterized in that: The support assembly (4) includes a crossbeam (401), a locking block (402), and a second lead hole (403). The locking block (402) is provided on one side of the top of the crossbeam (401), and the second lead hole (403) is provided on the side of the locking block (402).
5. The testing fixture for a 35kV switchgear according to claim 1, characterized in that: The limiting component (5) includes a retaining plate (501), a groove (502), a protrusion (503), and an elastic buckle (504). The retaining plate (501) has a groove (502) inside, and a protrusion (503) is provided on the side of the groove (502). The retaining plate (501) has elastic buckles (504) inside both ends.
6. The testing fixture for a 35kV switchgear according to claim 5, characterized in that: The protrusion (503) is symmetrically arranged along the groove (502), and the protrusion (503) is connected to the elastic buckle (504).
7. The testing fixture for a 35kV switchgear according to claim 1, characterized in that: The frame (1) includes a body (101), a storage cavity (102) and a support (103), and the storage cavity (102) is provided in the middle of the body (101), and the supports (103) are provided on both sides of the bottom end of the body (101).