High-voltage switch cabinet

Abstract

The utility model relates to a high-voltage switch cabinet. The technical problem to be solved by the utility model is to provide a high-voltage switch cabinet. According to the technical scheme, the high-voltage switch cabinet comprises a switch cabinet body, a cabinet middle plate assembly, a chassis truck assembly and a vacuum circuit breaker, the cabinet middle plate assembly comprises a cabinet middle plate, a guide rail and a lower grounding assembly, the chassis truck assembly comprises a chassis truck and an upper grounding assembly, the upper grounding assembly comprises an upper grounding plate and a pressurizing spring, and the vacuum circuit breaker is arranged in the cabinet middle plate. The upper grounding plate comprises an upper grounding plate butt joint part which is in butt joint with the lower grounding assembly. The two ends of the upper grounding plate butt joint part are sequentially bent to form an upper grounding plate transition part and an upper grounding plate installation part. The high-voltage switch cabinet provided by the utility model has the advantages that the matching design of the upper grounding plate and the lower grounding plate ensures the stability of grounding contact, the pressurization spring and the compression spring further improve the continuous pressure of grounding, the reliable grounding effect is ensured, and the safety is higher.

Description

Technical Field

[0001] The utility model relates to a high-voltage switch cabinet. Background Art

[0002] High-voltage switchgear is an electrical device used in power distribution systems, responsible for controlling, protecting, and distributing electricity. The switchgear contains multiple modular units, such as circuit breaker units, metering units, and grounding units, which work together to complete functions such as current interruption, overload protection, and short-circuit protection. Existing high-voltage switchgear is equipped with a chassis and a vacuum circuit breaker fixed to the chassis. The vacuum circuit breaker is connected and disconnected by moving the chassis. Generally, the chassis needs to be grounded with the switchgear cabinet to ensure the safe operation of the switchgear and the safety of personnel during maintenance. The existing chassis grounding device has the following problems: 1. Insufficient grounding reliability: The imperfect design of the grounding components leads to poor grounding contact. Especially during movement, the grounding effect is unstable and continuous and safe grounding cannot be guaranteed; 2. Mechanical wear: Frequent movement and operation can easily cause wear of the grounding components, affecting the grounding quality. Improvements and optimizations are made to this end. Utility Model Content

[0003] In order to solve the above problems, the technical problem to be solved by the present invention is to provide a high-voltage switch cabinet.

[0004] The technical solution adopted by the utility model high-voltage switch cabinet: includes a switch cabinet body, a cabinet middle plate assembly provided in the middle of the switch cabinet body, a chassis vehicle assembly movably provided on the cabinet middle plate assembly and a vacuum circuit breaker fixed on the chassis vehicle assembly, characterized in that the cabinet middle plate assembly includes a cabinet middle plate, guide rails provided at both ends of the cabinet middle plate, and a lower grounding assembly, the chassis vehicle assembly includes a chassis vehicle and an upper grounding assembly fixed in the chassis vehicle, the upper grounding assembly includes an upper grounding plate and a pressure spring, the upper grounding plate includes an upper grounding plate docking portion connected to the lower grounding assembly, and both ends of the upper grounding plate docking portion The upper grounding plate transition portion and the upper grounding plate mounting portion are bent in sequence, and the chassis includes a chassis bottom surface. Both ends of the chassis bottom surface are bent in sequence to form a chassis upper mounting surface arranged parallel to the chassis bottom surface. The upper grounding plate mounting portion is fixed to the chassis upper mounting surface by an upper fastening screw assembly. The pressure spring is sleeved on the upper fastening screw assembly, the lower end of which rests on the upper grounding plate mounting portion and the upper end of which rests on the chassis bottom surface. The chassis bottom surface is provided with a chassis bottom surface give-way opening for giving way when the upper grounding plate docking portion contacts.

[0005] The lower grounding assembly includes a lower grounding plate and a compression spring. The lower grounding plate is fixed to the back of the cabinet middle plate by a lower fastening screw assembly. The compression spring is sleeved on the lower fastening screw assembly, with its upper end resting on the back of the lower grounding plate and its lower end resting on the limit pin. The lower grounding plate is provided with a lower grounding plate docking portion that is integrally bent and arranged parallel to the upper grounding plate docking portion. The cabinet middle plate is provided with a cabinet middle plate yielding opening for the lower grounding plate docking portion to pass through.

[0006] The upper grounding plate abutting portion can pass through the bottom surface of the chassis.

[0007] The upper grounding plate abutting portion is provided with an arc reinforcement protrusion, and the lower grounding plate abutting portion is provided with an arc abutting groove corresponding to the arc reinforcement protrusion.

[0008] The radius of the arc-shaped docking groove is greater than the radius of the arc-shaped reinforcement protrusion.

[0009] The advantages of the high-voltage switchgear of the utility model are: the coordinated design of the upper grounding plate and the lower grounding plate ensures the stability of the grounding contact, the pressure spring and the compression spring further increase the continuous grounding pressure to ensure a reliable grounding effect and higher safety; the lower arc reinforcement protrusion and the corresponding groove structure help absorb vibration and displacement, reduce friction and wear, and extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0011] Figure 1 This is a structural diagram of the high-voltage switchgear of the utility model;

[0012] Figure 2 This is a structural diagram of the cabinet mid-plate assembly of the utility model;

[0013] Figure 3 It is a structural diagram of the chassis vehicle assembly of the utility model;

[0014] Figure 4 This is an exploded view of the grounding assembly of the utility model;

[0015] Figure 5 This is a structural diagram of the upper grounding plate of the utility model;

[0016] Figure 6 It is a structural diagram of the chassis vehicle of the utility model;

[0017] Figure 7 It is a structural diagram of the lower grounding assembly of the utility model;

[0018] Figure 8This is a structural diagram of the lower grounding plate of the utility model;

[0019] Figure 9 It is a structural schematic diagram of the cabinet middle plate of the present utility model. DETAILED DESCRIPTION

[0020] like Figure 1-9 As shown, the high-voltage switchgear involved in the present invention includes a switchgear cabinet body 1, a cabinet middle plate assembly 2 provided in the middle of the switchgear cabinet body 1, a chassis vehicle assembly 3 movably provided on the cabinet middle plate assembly 2 and a vacuum circuit breaker 4 fixed on the chassis vehicle assembly 3, the cabinet middle plate assembly 2 includes a cabinet middle plate 6, guide rails 7 provided at both ends of the cabinet middle plate 6, and a lower grounding assembly 8, the chassis vehicle assembly 3 includes a chassis vehicle 9 and an upper grounding assembly 10 fixed in the chassis vehicle 9, the upper grounding assembly 10 includes an upper grounding plate 20 and a pressure spring 21, the upper grounding plate 20 includes an upper grounding plate docking portion 24 connected to the lower grounding assembly 8, the two ends of the upper grounding plate docking portion 24 are bent in sequence to form an upper grounding plate transition portion 25 and an upper grounding plate mounting portion 26, the bottom The winch 9 includes a chassis bottom surface 27, and both ends of the chassis bottom surface 27 are bent in sequence to form a chassis upper mounting surface 28 arranged parallel to the chassis bottom surface 27. The upper grounding plate mounting portion 26 is fixed to the chassis upper mounting surface 28 by an upper fastening screw assembly 22. The pressure spring 21 is sleeved on the upper fastening screw assembly 22, with its lower end resting on the upper grounding plate mounting portion 26 and its upper end resting on the chassis bottom surface 27. The chassis bottom surface 27 is provided with a chassis bottom surface making way opening 29 for making way when the upper grounding plate docking portion 24 contacts. An upper grounding assembly 10 is added, and the matching design with the lower grounding plate ensures the stability of the grounding contact. The pressure spring increases the continuous pressure of the grounding, ensures the grounding effect of the upper grounding plate 20, and is safer.

[0021] The lower grounding assembly 8 includes a lower grounding plate 11 and a compression spring 12. The lower grounding plate 11 is fixed to the back of the cabinet middle plate 6 by a lower fastening screw assembly 13. The compression spring 12 is sleeved on the lower fastening screw assembly 13, with its upper end resting on the back of the lower grounding plate 11 and its lower end resting on the limit pin 14. The lower grounding plate 11 is provided with a lower grounding plate docking portion 16 that is integrally bent and arranged parallel to the upper grounding plate docking portion 24. The cabinet middle plate 6 is provided with a cabinet middle plate yielding opening 18 for the lower grounding plate docking portion 16 to pass through. The lower grounding plate 11 realizes elastic compression contact, ensures the tightness during contact, improves the contact stability and does not affect the normal movement of the chassis vehicle.

[0022] The upper grounding plate abutting portion 24 can pass through the chassis bottom surface clearance opening 29 , so that the lower grounding plate abutting portion 16 and the upper grounding plate abutting portion 24 can better contact each other.

[0023] The upper grounding plate docking portion 24 is provided with an arc reinforcement protrusion 31, and the lower grounding plate docking portion 16 is provided with an arc docking groove 32 corresponding to the arc reinforcement protrusion 31. The arc reinforcement protrusion 31 helps to absorb vibration and displacement, increase the contact area, reduce friction and wear, and extend the service life.

[0024] The radius of the arc-shaped docking groove 32 is greater than the radius of the arc-shaped reinforcement protrusion 31 , ensuring that the arc-shaped reinforcement protrusion 31 contacts the arc-shaped docking groove 32 more smoothly, further improving contact reliability.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention are included in the scope of protection of the present invention.

Claims

1. A high-voltage switchgear comprising a switchgear cabinet body (1), a cabinet mid-plate assembly (2) arranged in the middle of the switchgear cabinet body (1), a chassis assembly (3) movably arranged on the cabinet mid-plate assembly (2), and a vacuum circuit breaker (4) fixed on the chassis assembly (3), characterized in that: The cabinet middle plate assembly (2) includes a cabinet middle plate (6), guide rails (7) provided at both ends of the cabinet middle plate (6), and a lower grounding assembly (8); the chassis vehicle assembly (3) includes a chassis vehicle (9) and an upper grounding assembly (10) fixed in the chassis vehicle (9); the upper grounding assembly (10) includes an upper grounding plate (20) and a pressure spring (21); the upper grounding plate (20) includes an upper grounding plate docking portion (24) connected to the lower grounding assembly (8); the two ends of the upper grounding plate docking portion (24) are bent in sequence to form an upper grounding plate transition portion (25) and an upper grounding plate mounting portion (26); the chassis vehicle (9) includes a bottom The chassis bottom surface (27) is bent at both ends of the chassis bottom surface (27) to form a chassis upper mounting surface (28) arranged parallel to the chassis bottom surface (27). The upper grounding plate mounting portion (26) is fixed to the chassis upper mounting surface (28) through an upper fastening screw assembly (22). The pressure spring (21) is sleeved on the upper fastening screw assembly (22), with its lower end abutting against the upper grounding plate mounting portion (26) and its upper end abutting against the chassis bottom surface (27). The chassis bottom surface (27) is provided with a chassis bottom surface giving way (29) for giving way when the upper grounding plate docking portion (24) contacts the chassis bottom surface.

2. The high-voltage switchgear according to claim 1, characterized in that: The lower grounding assembly (8) includes a lower grounding plate (11) and a compression spring (12). The lower grounding plate (11) is fixed to the back of the cabinet middle plate (6) through a lower fastening screw assembly (13). The compression spring (12) is sleeved on the lower fastening screw assembly (13), with its upper end resting on the back of the lower grounding plate (11) and its lower end resting on the limit pin (14). The lower grounding plate (11) is provided with a lower grounding plate docking portion (16) that is integrally bent and arranged parallel to the upper grounding plate docking portion (24). The cabinet middle plate (6) is provided with a cabinet middle plate clearance opening (18) for the lower grounding plate docking portion (16) to pass through.

3. The high-voltage switchgear according to claim 1, characterized in that: The upper grounding plate docking portion (24) can pass through the chassis bottom surface clearance opening (29).

4. The high-voltage switchgear according to claim 2, characterized in that: The upper grounding plate docking portion (24) is provided with an arc reinforcement protrusion (31), and the lower grounding plate docking portion (16) is provided with an arc docking groove (32) corresponding to the arc reinforcement protrusion (31).

5. The high-voltage switchgear according to claim 4, characterized in that: The radius of the circular arc docking groove (32) is greater than the radius of the circular arc reinforcement protrusion (31).

Images