Subway power distribution cabinet convenient to maintain

Abstract

This utility model discloses a subway power distribution cabinet that is easy to maintain, relating to the technical field of subway power distribution cabinets. It addresses the problem that vibrations generated by the ground during subway operation can be transmitted to the inside of the power distribution cabinet, causing loose wiring. Loose grounding wires or other wiring within the cabinet can increase the grounding resistance of electrical equipment, leading to instability in its operation. The lower end of the power distribution cabinet is fixedly equipped with a shock-absorbing mechanism. An upper support base is provided at the upper end of the shock-absorbing mechanism, and a lower support base is provided at the lower end. Four rubber spring pads are installed at the midpoint between the upper and lower support bases, and at the four corners between the lower and upper support bases. Two shock-absorbing cylinders are symmetrically arranged on the side closest to the adjacent rubber spring pads. A cable management mechanism is fixedly installed inside the power distribution cabinet using Velcro.

Description

Technical Field

[0001] This utility model relates to the field of subway power distribution cabinet technology, specifically a subway power distribution cabinet that is easy to maintain. Background Technology

[0002] A subway power distribution cabinet is a device used for centralized control, distribution, and protection of electrical energy. It distributes electrical energy from upstream power distribution equipment to nearby loads, such as subway trains, station equipment, and lighting systems, providing protection, monitoring, and control functions for these loads. Subway power distribution cabinets adopt a modular structure, effectively saving placement space and adapting to the strict space requirements of subway stations and other locations. They support multiple power transmissions, allowing for on-demand control of power access to meet the power needs of different situations. The main distribution cabinet and its auxiliary equipment are rationally designed and employ reliable automatic switching protection measures to ensure the safety and reliability of the electrical system. Made of special materials, they possess fire-retardant properties, providing a certain degree of safety for passengers and equipment. Subway power distribution cabinets are characterized by mobility, scalability, and versatility, meeting the needs of different regions and locations and ensuring a stable and reliable power supply for the subway system.

[0003] Chinese Patent Publication No. CN222234193U discloses a four-electric distribution cabinet for railway construction, comprising a cabinet body, a pair of cabinet doors, a pair of mounting brackets, and a heat dissipation mechanism. The cabinet body has openings on both sides, with the cabinet doors located on both sides. The mounting brackets are located at the openings on both sides of the cabinet body, and the heat dissipation mechanism is located between the pair of mounting brackets. This utility model has the following advantages and effects: by setting up a distribution cabinet where components can be installed on both sides, the space inside the distribution cabinet is fully utilized, improving the utilization rate of the distribution cabinet; by setting up a highly stable heat dissipation mechanism, stable heat dissipation of the components inside the distribution cabinet is ensured, guaranteeing the normal and stable operation of the distribution cabinet.

[0004] The existing technical solutions mentioned above have the following drawbacks: When the subway is running, it will be vibrated by the ground, and the vibration will be transmitted to the inside of the distribution cabinet, causing the wiring inside the distribution cabinet to become loose. Loose grounding wires or other wiring inside the distribution cabinet will increase the grounding resistance of electrical equipment, which will in turn cause the electrical equipment to be unstable in operation. Therefore, we propose a subway distribution cabinet that is easy to maintain in order to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this utility model is to provide a subway power distribution cabinet that is easy to maintain, in order to solve the problem mentioned in the background art that the subway will vibrate when it is running, and the vibration will be transmitted to the inside of the power distribution cabinet, causing the wiring inside the power distribution cabinet to become loose. Loose grounding wires or other wiring inside the power distribution cabinet will lead to an increase in the grounding resistance of electrical equipment, which in turn will cause the electrical equipment to be unstable in operation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a subway power distribution cabinet that is easy to maintain, comprising a power distribution cabinet body, a shock-absorbing mechanism fixedly installed at the lower end of the power distribution cabinet body, an upper support seat provided at the upper end of the shock-absorbing mechanism, a lower support seat provided at the lower end of the shock-absorbing mechanism, four rubber spring pads respectively installed at the middle position between the lower support seat and the upper support seat, and at the four corners between the lower support seat and the upper support seat, two shock-absorbing cylinders symmetrically arranged on the side close to the rubber spring pads between adjacent rubber spring pads, a cable bundling mechanism fixedly installed inside the power distribution cabinet body by Velcro, a cable reel provided at the middle position inside the cable bundling mechanism, and adjustment seat grooves opened on the rear sides of the upper and lower ends of the cable bundling mechanism, with adjustment seats slidably installed inside the adjustment seat grooves.

[0007] Preferably, the central damping mechanism includes an upper damping seat, a lower mounting seat, a compression spring, a compression spring groove, a rotating seat, a limiting ring, a sliding seat, a spherical crown plate, a spherical slide groove, a limiting ring groove, a ball slide groove, and balls. The upper damping seat is provided at the upper end of the central damping mechanism and is fixedly connected to the upper support seat. The lower mounting seat is provided at the lower end of the central damping mechanism and is fixedly connected to the lower support seat.

[0008] Preferably, a rotating seat is fixedly installed above the lower mounting base, a sliding seat is fitted on the outside of the rotating seat, a compression spring groove is provided inside the upper shock absorber, and multiple compression springs are rectangularly arranged between the sliding seat and the compression spring groove, and the sliding seat is slidably connected to the compression spring groove.

[0009] Preferably, a ball bearing is rotatably mounted on the outer side of the upper end of the sliding seat, a ball bearing groove is formed on the inner side of the lower end of the upper shock absorber, the ball bearing groove is rotatably connected to the ball bearing, a spherical crown plate is fixedly mounted at the middle position inside the lower end of the sliding seat, a spherical groove is formed at the middle position of the upper end of the rotating seat, the spherical crown plate is slidably connected to the spherical groove, a limiting ring is provided on the outer side of the upper end of the rotating seat, a limiting ring groove is formed on the outer side of the inner side of the sliding seat, and the limiting ring groove is rotatably connected to the limiting ring in a rolling and rotating manner.

[0010] Preferably, the wire harnessing mechanism includes a guide seat, an electric wire, an adjusting seat, an adjusting seat groove, and a winding reel. The guide seat is fixedly installed at the middle position of the upper and lower ends of the wire harnessing mechanism. The electric wire passes through the guide seat and the adjusting seat respectively and is wound around the outside of the winding reel. The adjusting seat is located on the upper and lower sides of the winding reel.

[0011] Preferably, a fixed seat is fixedly installed at the lower end of the adjusting seat, and limit protrusions are symmetrically arranged on the front and rear sides of the fixed seat. Limit protrusion grooves are symmetrically opened on the front and rear sides inside the sliding groove of the adjusting seat. The limit protrusion grooves are slidably connected to the limit protrusions. A toothed row is provided at the bottom end of the sliding groove of the adjusting seat, and spring plates are symmetrically arranged at the lower end of the fixed seat. The spring plates are arranged corresponding to the toothed grooves.

[0012] Preferably, the adjusting seat has an internal wire groove, and the upper end of the wire groove is symmetrically provided with limiting rubber blocks, and the wire is located inside the wire groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. When this utility model encounters vibration during use, the piston inside the shock-absorbing cylinder will move up and down accordingly. One end of the shock-absorbing cylinder is connected to the lower support seat, and the other end is connected to the upper support seat, thereby realizing the reciprocating motion of the piston. The inside of the shock-absorbing cylinder is filled with air, which is the key medium for generating damping force. When the piston moves, the damping cylinder flows from one chamber to another through small holes on the piston. During the flow, the damping cylinder experiences frictional resistance between the hole wall and oil molecules, achieving a damping effect. When the central damping mechanism vibrates, the upper damping seat moves down with the upper support seat, compressing the distance between the upper damping seat and the lower mounting seat, thus pressurizing the compression spring. The compression spring undergoes compression deformation, absorbing some energy and helping to reduce the amplitude and intensity of vibration or impact. The upper damping seat slides stably up and down outside the lower mounting seat as the balls roll, while the spherical crown plate slides with the rotating seat. The sliding seat can change its tilt angle by cooperating with the limiting ring and the limiting ring groove. This solves the problem that when the subway is running, vibrations generated by the ground are transmitted to the inside of the distribution cabinet, causing loose wiring inside the distribution cabinet. Loose grounding wires or other wiring inside the distribution cabinet can increase the grounding resistance of electrical equipment, leading to unstable operation of the electrical equipment.

[0015] 2. This utility model uses a wire-binding mechanism to constrain the direction of the wire, preventing bending and messiness caused by excess wire length. The wire-binding mechanism is attached to the area where wire binding is required using Velcro. The upper end of the wire is passed through the upper guide seat and then through the upper adjustment seat. The number of turns wrapped around the outside of the reel is selected according to the excess length of the wire. After winding, the wire passes through the lower adjustment seat and guide seat. The misalignment between the wire, guide seat, and reel can be adjusted by sliding the adjustment seat, thus keeping the wire outside the wire-binding mechanism straight and neat. When adjusting the left and right position of the adjustment seat, grasp the adjustment seat and move it to the left or right. When the pushing force is greater than the elastic force of the two spring plates, the spring plates move out of the tooth groove of the toothed row and slide left and right below the limit of the limiting protrusion groove. Attached Figure Description

[0016] Figure 1 This is the front view of the present invention;

[0017] Figure 2 This is a front view of the shock absorption mechanism in this utility model;

[0018] Figure 3 This is a schematic diagram of the shock absorption mechanism in this utility model;

[0019] Figure 4 This is a schematic diagram of the central shock absorption mechanism in this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the wire harness mechanism in this utility model;

[0021] Figure 6 This is a diagram showing the connection relationship between the adjusting seat and the adjusting seat groove in this utility model.

[0022] In the diagram: 1. Distribution cabinet body; 2. Vibration damping mechanism; 3. Central vibration damping mechanism; 4. Lower support seat; 5. Upper support seat; 6. Rubber spring pad; 7. Vibration damping cylinder; 8. Upper vibration damping seat; 9. Lower mounting seat; 10. Compression spring; 11. Compression spring groove; 12. Rotating seat; 13. Limiting ring; 14. Sliding seat; 15. Spherical crown plate; 16. Spherical slide groove; 17. Limiting ring groove; 18. Ball slide groove; 19. Ball; 20. Cable harness mechanism; 21. Guide seat; 22. Wire; 23. Adjusting seat; 24. Adjusting seat slide groove; 25. Cable reel; 26. Spring plate; 27. Limiting protrusion groove; 28. Limiting protrusion; 29. ​​Wire groove; 30. Limiting rubber block; 31. Fixed seat; 32. Tooth row. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Please see Figure 1-6This utility model provides an embodiment of a subway power distribution cabinet that is easy to maintain, comprising a cabinet body 1, a shock-absorbing mechanism 2 fixedly installed at the lower end of the cabinet body 1, an upper support seat 5 provided at the upper end of the shock-absorbing mechanism 2, a lower support seat 4 provided at the lower end of the shock-absorbing mechanism 2, four rubber spring pads 6 respectively installed at the middle position between the lower support seat 4 and the upper support seat 5, and at the four corners between the lower support seat 4 and the upper support seat 5, two shock-absorbing cylinders 7 are symmetrically arranged on the side close to the rubber spring pads 6 between adjacent rubber spring pads 6, a cable management mechanism 20 is fixedly installed inside the cabinet body 1 by Velcro, a cable reel 25 is provided at the middle position inside the cable management mechanism 20, and an adjustment seat groove 24 is opened on the rear side of the upper and lower ends of the cable management mechanism 20, and an adjustment seat 23 is slidably installed inside the adjustment seat groove 24.

[0025] When vibration occurs during use, the piston inside the damping cylinder 7 moves up and down accordingly. One end of the damping cylinder 7 is connected to the lower support 4, and the other end is connected to the upper support 5, thus realizing the reciprocating motion of the piston. The inside of the damping cylinder 7 is filled with air, which is the key medium for generating damping force. When the piston moves, the damping cylinder 7 flows from one chamber to another through the small hole on the piston. During the flow, the damping cylinder 7 is subjected to frictional resistance between the hole wall and oil molecules, thus achieving a damping effect. When the central damping mechanism 3 vibrates, the upper damping seat 8 moves down with the upper support seat 5, and the distance between the upper damping seat 8 and the lower mounting seat 9 is compressed, thereby pressurizing the compression spring 10. The compression spring 10 will undergo compression deformation, thereby absorbing some energy and helping to reduce the amplitude and intensity of vibration or impact. The upper damping seat 8 slides stably up and down outside the lower mounting seat 9 as the ball 19 rolls. The spherical crown plate 15 is slidably connected to the rotating seat 12, allowing the sliding seat 14 to change its tilt angle through the cooperation of the limiting ring 13 and the limiting ring groove 17.

[0026] Please see Figure 3The central damping mechanism 3 includes an upper damping seat 8, a lower mounting seat 9, a compression spring 10, a compression spring groove 11, a rotating seat 12, a limiting ring 13, a sliding seat 14, a spherical crown plate 15, a spherical slide groove 16, a limiting ring groove 17, a ball slide groove 18, and balls 19. The upper damping seat 8 is located at the upper end of the central damping mechanism 3 and is fixedly connected to the upper support seat 5. The lower mounting seat 9 is located at the lower end of the central damping mechanism 3 and is fixedly connected to the lower support seat 4. A rotating seat 12 is fixedly mounted above the lower mounting seat 9. A sliding seat 14 is fitted onto the outside of the rotating seat 12. A compression spring groove 11 is formed inside the upper damping seat 8. Multiple compression springs 10 are rectangularly arranged between the sliding seat 14 and the compression spring groove 11. The sliding seat 14 is slidably connected to the compression spring groove 11. A ball bearing 19 is rolled on the outer side of the upper end of the sliding seat 14. A ball bearing groove 18 is opened on the inner side of the lower end of the upper shock absorber 8. The ball bearing groove 18 is rolledly connected with the ball bearing 19. A spherical crown plate 15 is fixedly installed at the middle position inside the lower end of the sliding seat 14. A spherical groove 16 is opened at the middle position of the upper end of the rotating seat 12. The spherical crown plate 15 is slidably connected with the spherical groove 16. A limiting ring 13 is provided on the outer side of the upper end of the rotating seat 12. A limiting ring groove 17 is opened on the outer side of the inner side of the sliding seat 14. The limiting ring groove 17 and the limiting ring 13 are rolled and rotated in a sliding connection.

[0027] Please see Figure 5-6 The cable bundling mechanism 20 includes a guide seat 21, a wire 22, an adjusting seat 23, an adjusting seat groove 24, and a winding reel 25. The guide seat 21 is fixedly installed at the middle position of both the upper and lower ends of the cable bundling mechanism 20. The wire 22 passes through the guide seat 21 and the adjusting seat 23 respectively and is wound around the outside of the winding reel 25. The adjusting seat 23 is located on the upper and lower sides of the winding reel 25. A fixing seat 31 is fixedly installed at the lower end of the adjusting seat 23. Limiting protrusions 28 are symmetrically arranged on the front and rear sides of the fixing seat 31. Limiting protrusion grooves 27 are symmetrically opened on the front and rear sides inside the adjusting seat groove 24. The limiting protrusion grooves 27 and the limiting protrusions 28 are slidably connected. A toothed row 32 is provided at the bottom end of the adjusting seat groove 24. Spring plates 26 are symmetrically arranged at the lower end of the fixing seat 31, and the spring plates 26 correspond to the toothed grooves. A wire groove 29 is opened inside the adjusting seat 23. Limiting rubber blocks 30 are symmetrically arranged at the upper end of the wire groove 29, and the wire 22 is located inside the wire groove 29.

[0028] Working principle: When maintaining the distribution cabinet, open the cabinet door to clean and inspect the cabinet body 1. When it is necessary to adjust the wires 22 inside the cabinet body 1, use the wire harness 20 to constrain the direction of the wires 22 to prevent bending and messiness caused by the excess length of the wires 22. Attach the wire harness 20 to the area where the wires need to be harnessed using Velcro. Pass the upper end of the wire 22 through the upper guide seat 21, and then through the upper adjusting seat 23. Select the number of turns to wrap around the outside of the reel 25 according to the excess length of the wire 22. After winding, pass it through the lower adjusting seat 23 and guide seat 21. The adjustment seat 23 can also be used for sliding. The adjustment mechanism adjusts the misalignment between the wire 22, guide seat 21, and reel 25, ensuring the wires outside the cable harness 20 remain straight and neat. When adjusting the left or right position of the adjustment seat 23, grasping it moves it to the left or right. When the pushing force exceeds the elastic force of the two spring plates 26, the spring plates 26 move out of the toothed grooves of the toothed row 32 and slide left and right below the limiting protrusion groove 27. When the subway passes by, the ground vibration is transmitted to the damping mechanism 2. When the rubber spring pads 6 at the four corners are vibrated, their internal molecular chains undergo friction and internal wear, converting vibration energy into heat energy that dissipates. This energy conversion process effectively reduces vibration amplitude and frequency, thus achieving vibration reduction and noise reduction. The rubber spring pad can also isolate the vibration source from the protected object and prevent the vibration from being transmitted through the rigid connection. The damping cylinders 7 on both sides of the rubber spring pad 6 improve the stability of both sides of the rubber spring pad 6. When vibration is encountered during use, the piston inside the damping cylinder 7 will move up and down. One end of the damping cylinder 7 is connected to the lower support 4 and the other end is connected to the upper support 5, thereby realizing the reciprocating motion of the piston. The inside of the damping cylinder 7 is filled with air, which is the key medium for generating damping force. When the piston moves, the damping cylinder 7 flows from one chamber to another through the small hole on the piston. During the flow, the damping cylinder 7 is subjected to frictional resistance between the hole wall and oil molecules, thus achieving a damping effect. When the central damping mechanism 3 vibrates, the upper damping seat 8 moves down with the upper support seat 5, and the distance between the upper damping seat 8 and the lower mounting seat 9 is compressed, thereby pressurizing the compression spring 10. The compression spring 10 will undergo compression deformation, thereby absorbing some energy and helping to reduce the amplitude and intensity of vibration or impact. The upper damping seat 8 slides stably up and down outside the lower mounting seat 9 as the ball 19 rolls. The spherical crown plate 15 is slidably connected to the rotating seat 12, allowing the sliding seat 14 to change its tilt angle through the cooperation of the limiting ring 13 and the limiting ring groove 17.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A subway power distribution cabinet that is easy to maintain, comprising a cabinet body (1), characterized in that: A shock-absorbing mechanism (2) is fixedly installed at the lower end of the distribution cabinet (1). An upper support seat (5) is provided at the upper end of the shock-absorbing mechanism (2), and a lower support seat (4) is provided at the lower end of the shock-absorbing mechanism (2). Four rubber spring pads (6) are installed at the middle position between the lower support seat (4) and the upper support seat (5), and at the four corners between the lower support seat (4) and the upper support seat (5). Two shock-absorbing cylinders (7) are symmetrically arranged on the side of the adjacent rubber spring pads (6) near the rubber spring pads (6). A cable management mechanism (20) is fixedly installed inside the distribution cabinet (1) by Velcro. A cable reel (25) is provided at the middle position inside the cable management mechanism (20). Adjustment seat grooves (24) are provided on the rear sides of the lower two ends. Adjustment seats (23) are slidably installed inside the adjustment seat grooves (24). The central damping mechanism (3) includes an upper damping seat (8), a lower mounting seat (9), a compression spring (10), a compression spring groove (11), a rotating seat (12), a limiting ring (13), a sliding seat (14), a spherical crown plate (15), a spherical groove (16), a limiting ring groove (17), a ball groove (18), and a ball (19). The upper end of the central damping mechanism (3) is provided with an upper damping seat (8), which is fixedly connected to the upper support seat (5). The lower end of the central damping mechanism (3) is provided with a lower mounting seat (9), which is fixedly connected to the lower support seat (4).

2. The subway power distribution cabinet that is easy to maintain according to claim 1, characterized in that: A rotating seat (12) is fixedly installed above the lower mounting base (9). A sliding seat (14) is fitted on the outside of the rotating seat (12). A compression spring groove (11) is opened inside the upper shock absorber (8). Multiple compression springs (10) are rectangularly arranged between the sliding seat (14) and the compression spring groove (11). The sliding seat (14) and the compression spring groove (11) are slidably connected.

3. The subway power distribution cabinet that is easy to maintain according to claim 2, characterized in that: A ball bearing (19) is rolled on the outer side of the upper end of the sliding seat (14). A ball bearing groove (18) is opened on the inner side of the lower end of the upper shock absorber (8). The ball bearing groove (18) is rolled and connected with the ball bearing (19). A spherical crown plate (15) is fixedly installed at the middle position inside the lower end of the sliding seat (14). A spherical groove (16) is opened at the middle position of the upper end of the rotating seat (12). The spherical crown plate (15) is slidably connected with the spherical groove (16). A limiting ring (13) is provided on the outer side of the upper end of the rotating seat (12). A limiting ring groove (17) is opened on the outer side inside the sliding seat (14). The limiting ring groove (17) and the limiting ring (13) are rolled and rotated and slidably connected.

4. The subway power distribution cabinet that is easy to maintain according to claim 1, characterized in that: The wire harnessing mechanism (20) includes a guide seat (21), an electric wire (22), an adjusting seat (23), an adjusting seat groove (24), and a winding reel (25). The guide seat (21) is fixedly installed at the middle position of the upper and lower ends of the wire harnessing mechanism (20). The electric wire (22) passes through the guide seat (21) and the adjusting seat (23) respectively and is wound around the outside of the winding reel (25). The adjusting seat (23) is located on the upper and lower sides of the winding reel (25).

5. A subway power distribution cabinet that is easy to maintain according to claim 4, characterized in that: A fixed seat (31) is fixedly installed at the lower end of the adjusting seat (23). Limiting protrusions (28) are symmetrically arranged on the front and rear sides of the fixed seat (31). Limiting protrusion grooves (27) are symmetrically opened on the front and rear sides inside the adjusting seat slide groove (24). The limiting protrusion grooves (27) are slidably connected to the limiting protrusions (28). A toothed row (32) is provided at the bottom end of the adjusting seat slide groove (24). Spring plates (26) are symmetrically arranged at the lower end of the fixed seat (31). The spring plates (26) are arranged corresponding to the toothed grooves.

6. A subway power distribution cabinet that is easy to maintain according to claim 1, characterized in that: The adjusting seat (23) has an internal wire groove (29), and the upper end of the wire groove (29) is symmetrically provided with limiting rubber blocks (30). The wire (22) is located inside the wire groove (29).

Images