Subway direct-current switch cabinet with protective isolation valve
By introducing rail columns, articulation frames and guide structures into the subway DC switch cabinet, the problem of safety protection devices is solved, and the smooth movement and automatic reset of the insulating protective plate are achieved, which improves safety and operation convenience.
Patent Information
- Application Number
- CN202422142980.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-02
AI Technical Summary
The safety protection devices of existing subway DC switch cabinets are prone to jam when moving up and down, and require manual operation, which poses safety hazards.
A subway DC switch cabinet with protective isolation valve is designed, using rail columns, hinges and guide structures to ensure smooth movement of the insulating protective plate and automatic reset through the reset structure.
It avoids friction between the insulating protective plate and the rear wall of the cabinet, ensures smooth movement, avoids jamming, and improves safety and operation convenience.
Smart Images
Figure CN223141322U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of switch cabinets, and specifically relates to a subway DC switch cabinet with a protective isolation shutter. Background Technique
[0002] In recent years, rail transit has developed vigorously in China due to its advantages such as large carrying capacity, fast and punctual operation, and low noise and exhaust pollution. At present, the most commonly used power supply mode for subway rail transit is the bilateral power supply of 750V or 1500V DC. The subway DC switch cabinet is an important device in the subway DC power supply system. The structure of the subway DC switch cabinet includes a circuit breaker handcart chamber and a positive busbar chamber. When the circuit breaker handcart of the switch cabinet is pushed in, the circuit breaker handcart chamber is connected to the positive busbar chamber. The safety protection isolation device of the switch cabinet is a device for connecting and insulating the circuit breaker handcart chamber and the positive busbar chamber, and the safety protection isolation device is installed on the switch cabinet.
[0003] The current safety protection device has the following problems: when the safety protection device moves up and down, it is easy to get stuck. After getting stuck, the staff needs to open the rear cabinet door to manually operate the movable insulating protection plate, which has potential safety hazards. Summary of the Utility Model
[0004] The purpose of the utility model is to overcome the deficiencies existing in the prior art and design a subway DC switch cabinet with a protective isolation shutter, which can effectively solve the problem that the safety protection device is easy to get stuck when moving up and down in the prior art.
[0005] To achieve the above purpose, the utility model provides a subway DC switch cabinet with a protective isolation shutter, and adopts the following technical solutions, including: a cabinet body, a protective isolation shutter is arranged on one side of the cabinet body. The protective isolation shutter includes an insulating protection plate, a guide rail column, a hinge frame and a support block. Symmetric sliding grooves are opened on the left and right sides of the insulating protection plate. The guide rail column is arranged on the inner wall of the cabinet body and is adapted to the position of the sliding groove. One ends of two hinge frames are symmetrically arranged on the insulating protection plate, and the other ends of the hinge frames are arranged on the cabinet body through the support block. The insulating protection plate is movably sleeved on the guide rail column through the sliding groove, and the insulating protection plate can move up and down along the guide rail column; a guiding structure is arranged between the inner wall of the cabinet body and the protective isolation shutter. The guiding structure includes a first mounting seat arranged on the inner wall of the cabinet body. The first mounting seats are arranged in pairs on the left and right. The top end of the first mounting seat is movably provided with a first roller, and the first roller abuts against the protective isolation shutter.
[0006] Further, the hinge frame includes a mounting plate, a first hinge rod, a second hinge rod, and a connecting block. The mounting plate is disposed on the insulating protection plate. One end of the first hinge rod is hinged to the mounting plate, the other end of the first hinge rod is hinged to the second hinge rod, the other end of the second hinge rod is hinged to the connecting block, and the connecting block is mounted on the support block.
[0007] Further, the hinge frame includes an insulating column, and the insulating column is disposed on a side wall of the second hinge rod facing away from the support block.
[0008] Further, the cabinet body is provided with a reset structure. The reset structure includes a U-shaped bracket, a reset plate, and a spring assembly. The reset structure is disposed on both sides of the inner wall of the cabinet body. Among them, the U-shaped bracket is fixedly disposed on both sides of the inner wall of the cabinet body. A plurality of spring assemblies are provided between the reset plate and the U-shaped bracket, and the side wall of the reset plate is parallel to the side wall of the insulating protection plate.
[0009] Further, the spring assembly includes a spring, a guide post, and a limit post. One end of the guide post is fixedly disposed on the reset plate, the other end of the guide post passes through the U-shaped bracket and is connected to the limit post, and the spring is sleeved outside the guide post and is located between the U-shaped bracket and the reset plate.
[0010] Further, a second mounting seat is provided on the side wall of the insulating protection plate parallel to the reset plate, and a second roller is movably disposed on the top of the second mounting seat.
[0011] Further, the distance between the second roller and the reset plate is 0 - 0.5 cm.
[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0013] 1. By providing a guiding structure, friction between the insulating protection plate and the rear wall of the cabinet body can be avoided, so that it moves smoothly up and down, and the insulating protection plate is prevented from getting stuck.
[0014] 2. When the insulating protection plate moves up and down and is displaced, the second roller on the insulating protection plate presses the reset plate, the reset plate presses the spring, and under the reaction force of the spring, the insulating protection plate is reset. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic structural diagram of the present utility model;
[0016] Figure 2 is a schematic structural diagram of another perspective of the present utility model;
[0017] Figure 3 is Figure 2 an enlarged schematic structural diagram of part A in
[0018] Figure 4 This is the structural schematic diagram of the protective isolation flap of the present utility model;
[0019] Figure 5 This is the partial structural schematic diagram of the present utility model;
[0020] Figure 6 is Figure 5 the enlarged structural schematic diagram at position B in
[0021] In the figure: 1 - cabinet body; 2 - protective isolation flap; 21 - insulating protection board; 22 - guide rail column; 23 - hinge frame; 231 - mounting piece; 232 - first hinge rod; 233 - second hinge rod; 234 - connecting block; 235 - insulating column; 24 - support block; 25 - chute; 26 - second mounting seat; 27 - second roller; 3 - guiding structure; 31 - first mounting seat; 32 - first roller; 4 - reset structure; 41 - U-shaped bracket; 42 - reset plate; 43 - spring; 44 - guiding column; 45 - limiting column. Specific embodiments
[0022] The preferred embodiments of the present utility model will be described in more detail below. Although the preferred embodiments of the present utility model are described below, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present utility model more thorough and complete, and to convey the scope of the present utility model fully to those skilled in the art.
[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0025] As Figures 1-6 shown, the present utility model is a subway DC switch cabinet with a protective isolation flap, which includes: a cabinet body 1, a protective isolation flap 2 is arranged on one side of the cabinet body 1. The protective isolation flap 2 includes an insulating protection plate 21, a guide rail column 22, a hinge frame 23, and a support block 24. Chute grooves 25 are symmetrically opened on the left and right sides of the insulating protection plate 21. The guide rail column 22 is arranged on the inner wall of the cabinet body 1 and is adapted to the position of the chute grooves 25. One ends of two hinge frames 23 are symmetrically arranged on the insulating protection plate 21, and the other ends of the hinge frames 23 are arranged on the cabinet body 1 through the support block 24. The insulating protection plate 21 is movably sleeved on the guide rail column 22 through the chute grooves 25, and the insulating protection plate 21 can move up and down along the guide rail column 22.
[0026] A guiding structure 3 is arranged between the inner wall of the cabinet body 1 and the protective isolation flap 2. The guiding structure 3 includes a first mounting seat 31 arranged on the inner wall of the cabinet body 1. The first mounting seats 31 are arranged in pairs on the left and right. A first roller 32 is movably arranged at the top of the first mounting seat 31, and the first roller 32 abuts against the protective isolation flap 2.
[0027] In the above technical solution, the handcart is installed on the insulating protection plate 21. By arranging the guiding structure 3, the insulating protection plate 21 can be prevented from rubbing against the rear wall of the cabinet body 1, so that it moves smoothly when moving up and down, and at the same time, the insulating protection plate 21 can be prevented from getting stuck.
[0028] As a preference of the above technical solution, the hinge frame 23 includes a mounting piece 231, a first hinge rod 232, a second hinge rod 233, and a connection block 234. The mounting piece 231 is arranged on the insulating protection plate 21. One end of the first hinge rod 232 is hinged to the mounting piece 231, the other end of the first hinge rod 232 is hinged to the second hinge rod 233, the other end of the second hinge rod 233 is hinged to the connection block 234, and the connection block 234 is installed on the support block 24. Among them, the hinge frame 23 includes an insulating column 235, and the insulating column 235 is arranged on the side wall of the second hinge rod 233 facing away from the support block 24.
[0029] The cabinet body 1 is provided with a reset structure 4. The reset structure 4 includes a U-shaped bracket 41, a reset plate 42 and a spring assembly. The reset structure 4 is arranged on both sides of the inner wall of the cabinet body 1. Among them, the U-shaped bracket 41 is fixedly arranged on both sides of the inner wall of the cabinet body 1. There are several spring assemblies between the reset plate 42 and the U-shaped bracket 41. The spring assembly includes a spring 43, a guide post 44 and a limit post 45. One end of the guide post 44 is fixedly arranged on the reset plate 42. The other end of the guide post 44 penetrates through the U-shaped bracket 41 and is connected with the limit post 45. The spring 43 is sleeved outside the guide post 44 and is located between the U-shaped bracket 41 and the reset plate 42. The side wall of the reset plate 42 is parallel to the side wall of the insulation protection plate 21.
[0030] A second mounting seat 26 is arranged on the side wall of the insulation protection plate 21 parallel to the reset plate 42. A second roller 27 is movably arranged at the top of the second mounting seat 26. In a specific embodiment, the distance between the second roller 27 and the reset plate 42 is 0 - 0.5 cm.
[0031] In the above technical solution, when the insulation protection plate 21 moves up and down and has a position offset, the second roller 27 on the insulation protection plate 21 squeezes the reset plate 42, and the reset plate 42 squeezes the spring 43. Under the reaction force of the spring 43, the insulation protection plate 21 is reset.
[0032] The working principle of the present utility model is as follows:
[0033] The trolley can be installed on the insulation protection plate 21. By pushing the trolley in, the insulation protection plate 21 moves up or down along the guide rail column 22. By arranging the guiding structure 3, it can be avoided that the insulation protection plate 21 rubs against the rear wall of the cabinet body 1, making it smooth when moving up and down and avoiding jamming of the insulation protection plate 21. When the insulation protection plate 21 moves up and down and has a position offset, the second roller 27 on the insulation protection plate 21 squeezes the reset plate 42, and the reset plate 42 squeezes the spring 43. Under the reaction force of the spring 43, the insulation protection plate 21 is reset.
[0034] The above embodiments are only the preferred embodiments of the present utility model. The above description does not limit the protection scope of the present utility model in turn. The above description is exemplary and not exhaustive. Therefore, all equivalent changes made according to the structure, shape and principle of the present utility model should be covered within the protection scope of the present utility model. Without departing from the scope and spirit of the described embodiments, many modifications and changes are obvious to those of ordinary skill in the art of this technology.
Claims
1. A subway DC switchgear with a protective isolation valve, characterized in that, include: A cabinet (1), wherein a protective isolation valve (2) is arranged on one side of the cabinet (1), and the protective isolation valve (2) comprises an insulating protective plate (21), a guide rail column (22), a hinged frame (23) and a bracket block (24), wherein slide grooves (25) are symmetrically provided on the left and right sides of the insulating protective plate (21), the guide rail column (22) is arranged on the inner wall of the cabinet (1) and is adapted to the position of the slide groove (25), one end of the two hinged frames (23) is symmetrically arranged on the insulating protective plate (21), and the other end of the hinged frame (23) is arranged on the cabinet (1) through the bracket block (24). The insulating protection plate (21) is movably mounted on the guide rail column (22) through the slide groove (25), and the insulating protection plate (21) can move up and down along the guide rail column (22); a guide structure (3) is arranged between the inner wall of the cabinet (1) and the protective isolation valve (2), and the guide structure (3) includes a first mounting seat (31) arranged on the inner wall of the cabinet (1), the first mounting seats (31) are arranged in pairs on the left and right, and a first roller (32) is movably arranged on the top of the first mounting seat (31), and the first roller (32) is in contact with the protective isolation valve (2).
2. The DC switchgear for subway with a protective isolation flap according to claim 1, characterized in that, The articulated frame (23) comprises a mounting plate (231), a first articulated rod (232), a second articulated rod (233) and a connecting block (234); the mounting plate (231) is arranged on the insulating protection plate (21); one end of the first articulated rod (232) is articulated to the mounting plate (231); the other end of the first articulated rod (232) is articulated to the second articulated rod (233); the other end of the second articulated rod (233) is articulated to the connecting block (234); and the connecting block (234) is mounted on the bracket block (24).
3. The DC switchgear for subway according to claim 2, characterized in that, The hinged frame (23) comprises an insulating column (235), and the insulating column (235) is arranged on a side wall of the second hinged rod (233) facing away from the bracket block (24).
4. A subway DC switchgear with a protective isolation flap according to claim 1, characterized in that, The cabinet (1) is provided with a reset structure (4), the reset structure (4) comprising a U-shaped bracket (41), a reset plate (42) and a spring assembly, the reset structure (4) being arranged on both sides of the inner wall of the cabinet (1), wherein the U-shaped bracket (41) is fixedly arranged on both sides of the inner wall of the cabinet (1), a plurality of spring assemblies are arranged between the reset plate (42) and the U-shaped bracket (41), and the side wall of the reset plate (42) is parallel to the side wall of the insulating protection plate (21).
5. The DC switchgear for subway with a protective isolation flap according to claim 4, characterized in that, The spring assembly comprises a spring (43), a guide column (44) and a limit column (45); one end of the guide column (44) is fixedly arranged on the reset plate (42); the other end of the guide column (44) passes through the U-shaped bracket (41) and is connected to the limit column (45); the spring (43) is sleeved on the outside of the guide column (44) and is located between the U-shaped bracket (41) and the reset plate (42).
6. The DC switchgear for subway with a protective isolation valve according to claim 5, characterized in that A second mounting seat (26) is provided on a side wall of the insulating protection plate (21) parallel to the reset plate (42), and a second roller (27) is movably arranged on the top of the second mounting seat (26).
7. A subway DC switchgear with a protective isolation flap according to claim 6, characterized in that, The distance between the second roller (27) and the reset plate (42) is 0 - 0.5 cm.