A lightning protection distribution cabinet

Abstract

This utility model discloses a lightning protection distribution cabinet, including a cabinet body with two sets of cabinet doors rotatably connected to the front wall. Multiple mounting plates are arranged vertically inside the cabinet body. This utility model solves the problems of cumbersome operation and easy loosening of traditional threaded drives by using a cam-driven structure composed of a dial and a protrusion, combined with a mechanical self-locking structure composed of a limiting pin and a limiting hole. A single rotation of the dial can clamp or release the cable, significantly improving maintenance efficiency. Simultaneously, the cooperation of the limiting pin and the limiting hole ensures clamping stability and prevents cable loosening under vibration. The side-open slot design allows the cable to be directly embedded laterally into the clamping slot without axial threading. The arc-shaped anti-wear layer on the fixed and movable clamping blocks prevents damage to the cable's external insulation, balancing installation convenience and protective reliability.

Description

Technical Field

[0001] This utility model relates to the field of distribution cabinet technology, and in particular to a lightning protection distribution cabinet. Background Technology

[0002] A lightning protection distribution cabinet's lightning protection module is a protective device that discharges lightning potential into the ground through grounding or other methods. Under normal circumstances, its resistance is extremely high, and almost no current flows through it; when struck by lightning, its resistance drops sharply, guiding the lightning current into the ground and protecting equipment and personnel.

[0003] The existing lightning protection communication distribution cabinet installation structure includes a cabinet body, cabinet door, lightning protection plate, and conductive plates on both sides. During a lightning strike, the current is diverted to ground through the conductive plates, reducing damage to internal components. This structure has cable routing holes and cable outlet holes on both sides of the distribution plate to fix the cables; however, because the hole dimensions are fixed, the cables are prone to falling out of the holes.

[0004] To address this, an improved technology has been proposed for railway signal monitoring lightning protection distribution cabinets: mounting plates are installed on both sides of the partition, with slots on the plates for cable placement. Tightening the nut rotates the threaded rod, causing the slide to move horizontally, which in turn drives the arc clamping plate into the mounting slot, securing the cable. This design reduces cable loosening and detachment, and reversing the nut allows for quick disassembly.

[0005] However, the screw-on drive requires multiple rotations, which is inefficient, and the threaded structure lacks an anti-loosening design, making the cable prone to detachment. Further structural improvements are needed. Utility Model Content

[0006] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a lightning protection distribution cabinet.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a lightning protection distribution cabinet, comprising a cabinet body, with two sets of cabinet doors rotatably connected to the front wall of the cabinet body. Multiple sets of mounting plates are arranged vertically inside the cabinet body. Each set of mounting plates has four sets of wire clamping areas arranged horizontally at its front and rear ends. Each wire clamping area includes eight sets of wire clamping grooves, arranged in four pairs at the front and rear ends of the mounting plates. A fixed clamping block is fixedly connected to the inner left wall of each wire clamping groove, and a movable clamping block is slidably connected to the inner right wall of each wire clamping groove. The fixed clamping block and the movable clamping block are positioned relative to each other. The mounting plate is equipped with an anti-wear structure to prevent wear when clamping cables. Two sets of rectangular holes, arranged front-to-back, are located on the inner wall of the mounting plate and on the right side of the cable clamping groove. Two sets of guide rods are fixedly connected to the right wall of the movable clamping block. An elastic structure is provided between the guide rods and the rectangular holes to drive the movable clamping block to move to the right. A rotary disc is rotatably connected to the upper wall of the mounting plate, located between the two sets of rectangular holes, via a rotating shaft. A drive structure is provided between the rotary disc and the movable clamping block to push the movable clamping block toward the fixed clamping block. A limiting structure is provided between the rotary disc and the mounting plate to fix the position.

[0008] As a further description of the above technical solution:

[0009] The wear-resistant structure includes two sets of wear-resistant layers. The fixed clamping block and the movable clamping block are each provided with an arc-shaped groove on the opposite side. The two sets of wear-resistant layers are respectively provided on the opposite side of the two sets of arc-shaped grooves.

[0010] As a further description of the above technical solution:

[0011] The elastic structure includes two sets of first springs. The two sets of guide rods pass through the inner right wall of the clamping groove and extend into the corresponding rectangular hole. One end of each set of guide rods extending into the rectangular hole is fixedly connected to a set of limiting blocks. The two sets of first springs are respectively sleeved on the outer wall of a set of guide rods and are both located between the limiting blocks and the inner left wall of the rectangular hole.

[0012] As a further description of the above technical solution:

[0013] The drive structure includes a back plate and a protrusion. The protrusion is disposed on the outer peripheral wall of the dial. The back plate is fixedly connected to the upper wall of the movable clamping block. When the dial rotates, the movable clamping block moves toward the fixed clamping block through the contact between the protrusion and the back plate.

[0014] As a further description of the above technical solution:

[0015] The limiting structure includes a set screw, a second spring, a limiting pin, and a limiting hole. The limiting hole is located on the upper wall of the mounting plate and between two sets of rectangular holes. The limiting hole is located on the side of the rotating shaft away from the clamping groove. The set screw, the second spring, and the limiting pin are arranged sequentially from top to bottom on the inner wall of the dial. The end of the limiting pin away from the second spring passes through the lower wall of the dial and extends to the lower side of the dial. When the movable clamping block moves to cooperate with the fixed clamping block through the driving structure, the end of the limiting pin away from the second spring extends into the limiting hole.

[0016] As a further description of the above technical solution:

[0017] The inner left and inner right walls of the cabinet are fixedly connected to multiple sets of vertically distributed partitions, and the mounting plate is snapped between two sets of partitions that are opposite each other.

[0018] As a further description of the above technical solution:

[0019] The upper end of the rotating shaft passes through the upper wall of the dial and is fixedly connected to a lever for facilitating the rotation of the dial.

[0020] As a further description of the above technical solution:

[0021] The mounting plate has multiple sets of mounting grooves arranged in a left-right distribution on its inner wall, located at the center position in the front-back direction.

[0022] As a further description of the above technical solution:

[0023] An opening is provided on the outside of the cable clamping groove for the cable to enter.

[0024] This utility model has the following beneficial effects:

[0025] 1. Compared with existing technologies, this surge protection distribution cabinet solves the problems of cumbersome operation and easy loosening of traditional threaded drives by using a cam-driven structure composed of a dial and a protrusion, combined with a mechanical self-locking structure composed of a limit pin and a limit hole. A single rotation of the dial can clamp or release the cable, significantly improving maintenance efficiency. At the same time, the cooperation between the limit pin and the limit hole ensures clamping stability and prevents the cable from loosening under vibration.

[0026] 2. Compared with existing technologies, this lightning protection distribution cabinet adopts a side-open slot design, which allows cables to be directly embedded horizontally into the cable clamping slot without the need for axial threading. The arc-shaped anti-wear layer on the fixed and movable clamps prevents damage to the external insulation of the cables, thus balancing installation convenience and protection reliability. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a lightning protection distribution cabinet proposed in this utility model;

[0028] Figure 2 This is a schematic diagram of the internal structure of a lightning protection distribution cabinet proposed in this utility model;

[0029] Figure 3 This is a schematic diagram of the mounting plate structure of a lightning protection distribution cabinet proposed in this utility model;

[0030] Figure 4 This utility model proposes a lightning protection distribution cabinet. Figure 3 A magnified view of a section at point A in the middle;

[0031] Figure 5 This is a partial schematic diagram of the connection structure between the mounting plate and the movable clamping block of a lightning protection distribution cabinet proposed in this utility model.

[0032] Figure 6 This is a partial sectional view of the connection structure of the mounting plate, rotating shaft, and actuating disc of a lightning protection distribution cabinet proposed in this utility model.

[0033] Legend:

[0034] 1. Cabinet body; 2. Cabinet door; 3. Shelf; 4. Mounting plate; 401. Cable tray; 402. Rectangular hole; 5. Mounting slot; 6. Fixed clamp; 7. Movable clamp; 8. Guide rod; 9. Backing plate; 10. Rotating shaft; 11. Actuating disc; 1101. Protrusion; 12. Actuating lever; 13. Set screw; 14. Anti-wear layer; 15. Limiting block; 16. First spring; 17. Limiting hole; 18. Limiting pin; 19. Second spring. Detailed Implementation

[0035] 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.

[0036] Reference Figures 1 to 6 The present invention provides a lightning protection distribution cabinet, which includes a cabinet body 1, and two sets of cabinet doors 2 are rotatably connected to the front wall of the cabinet body 1.

[0037] In order to achieve efficient use of the internal space of the distribution cabinet and quick maintenance, multiple sets of mounting plates 4 are arranged vertically inside the cabinet 1. Multiple sets of vertically arranged partitions 3 are fixedly connected to the left and right inner walls of the cabinet 1. The mounting plates 4 are snapped between two sets of partitions that are opposite each other in the left and right directions. Multiple sets of horizontally arranged mounting slots 5 are provided on the inner wall of the mounting plates 4 and at the center position in the front-back direction.

[0038] Multiple sets of partitions 3 are fixedly connected to the left and right inner walls of the cabinet 1 to form a snap-fit ​​track. The mounting plate 4 is horizontally snapped between the two sets of partitions 3 to achieve detachable installation. The mounting plate 4 can be removed from the cabinet 1 for inspection or replacement. The upper and lower layered layout ensures the management of cables in separate areas, avoiding the problem of difficult maintenance of traditional integrated structures.

[0039] To avoid the cumbersome axial wire threading operation, each mounting plate 4 has four sets of wire clamping areas distributed left and right at the front and rear ends. The wire clamping areas include eight sets of wire clamping grooves 401. The eight sets of wire clamping grooves 401 are arranged in four pairs at the front and rear ends of the mounting plate 4. The outside of the wire clamping grooves 401 is provided with an opening for the cable to enter.

[0040] The cable can be directly inserted into the cable clamping groove 401 from the side, without having to be threaded through the end of the mounting plate 4, which greatly improves the installation efficiency;

[0041] To avoid damage to the cable insulation layer during clamping, a fixed clamping block 6 is fixedly connected to the inner left wall of the clamping groove 401, and a movable clamping block 7 is slidably connected to the inner right wall of the clamping groove 401. An anti-wear structure is provided between the fixed clamping block 6 and the movable clamping block 7 to prevent wear when clamping the cable. The anti-wear structure includes two sets of anti-wear layers 14. An arc-shaped groove is provided on the opposite side of the fixed clamping block 6 and the movable clamping block 7. The two sets of anti-wear layers 14 are respectively provided on the opposite side of the two sets of arc-shaped grooves.

[0042] The anti-wear layer 14 embedded in the arc groove of the fixed clamping block 6 and the movable clamping block 7 is made of polyurethane elastomer (Shore hardness 70A). Its arc curvature radius matches the outer diameter of the standard cable. When clamped, the anti-wear layer 14 forms a surface contact with the cable surface, and the pressure is evenly distributed, while effectively preventing the cable surface from being worn.

[0043] To ensure that the movable clamp 7 automatically resets when the cable is disassembled, two sets of rectangular holes 402 distributed in a front-to-back manner are provided on the inner wall of the mounting plate 4 and on the right side of the clamping groove 401. Two sets of guide rods 8 are fixedly connected to the right wall of the movable clamp 7. An elastic structure for moving the movable clamp 7 to the right is provided between the guide rods 8 and the rectangular holes 402. The elastic structure includes two sets of first springs 16. The two sets of guide rods 8 pass through the inner right wall of the clamping groove 401 and extend into the corresponding rectangular holes 402. A set of limiting blocks 15 are fixedly connected to one end of the two sets of guide rods 8 that extends into the rectangular holes 402. The two sets of first springs 16 are respectively sleeved on the outer wall of one set of guide rods 8 and are both located between the limiting block 15 and the inner left wall of the rectangular hole 402.

[0044] The outer diameter of the guide rod 8 is clearance-fitted with the rectangular hole 402. The first spring 16 is made of stainless steel. When the dial 11 is unlocked, the first spring 16 pushes the limit block 15 to drive the movable clamping block 7 to move to the right and reset. The reset stroke error is small.

[0045] To solve the problem of excessive number of turns in the thread drive operation, a dial plate 11 is rotatably connected to the upper wall of the mounting plate 4 between two sets of rectangular holes 402 via a rotating shaft 10. A drive structure for pushing the movable clamping block 7 toward the fixed clamping block 6 is provided between the dial plate 11 and the movable clamping block 7. The drive structure includes a back plate 9 and a protrusion 1101. The protrusion 1101 is provided on the outer peripheral wall of the dial plate 11. The back plate 9 is fixedly connected to the upper wall of the movable clamping block 7. When the dial plate 11 rotates, the movable clamping block 7 moves toward the fixed clamping block 6 through the contact between the protrusion 1101 and the back plate 9. The upper end of the rotating shaft 10 passes through the upper wall of the dial plate 11 and is fixedly connected to a lever 12 for convenient rotation of the dial plate 11.

[0046] A single rotation of lever 12 ninety degrees is enough to move the backplate 9 to its full range of motion, greatly reducing the operation time.

[0047] To address the risk of loosening under vibration, a limiting structure for fixing the position is provided between the actuating disk 11 and the mounting plate 4. The limiting structure includes a set screw 13, a second spring 19, a limiting pin 18, and a limiting hole 17. The limiting hole 17 is located on the upper wall of the mounting plate 4 and between two sets of rectangular holes 402. The limiting hole 17 is located on the side of the rotating shaft 10 away from the clamping groove 401. The set screw 13, the second spring 19, and the limiting pin 18 are arranged sequentially from top to bottom on the inner wall of the actuating disk 11. The end of the limiting pin 18 away from the second spring 19 passes through the lower wall of the actuating disk 11 and extends to the lower side of the actuating disk 11. When the movable clamping block 7 moves to cooperate with the fixed clamping block 6 through the driving structure, the end of the limiting pin 18 away from the second spring 19 extends into the limiting hole 17.

[0048] The limiting pin 18 is made of hardened 45 steel (HRC40-45), and the limiting hole 17 is fitted with a copper sleeve. The preload of the second spring 19 is 5N. When the limiting pin 18 is engaged in the limiting hole 17, a torque of ≥2N·m must be applied to unlock it. This not only serves as a limiting function but also does not affect the disassembly and assembly work.

[0049] Working principle: Multiple sets of partitions 3 are fixedly connected to the left and right inner walls of the cabinet 1 to form a snap-fit ​​track. The mounting plate 4 is horizontally snapped between the two sets of partitions 3, enabling detachable installation. The mounting plate 4 can be individually removed from the cabinet 1 for inspection or replacement. The layered layout ensures zoned cable management, avoiding the maintenance difficulties of traditional integrated structures. Cables can be directly embedded into the cable clamping groove 401 from the side, without needing to be threaded through the end of the mounting plate 4, greatly improving installation efficiency. The anti-wear layer 14 embedded in the arc-shaped grooves of the fixed clamping block 6 and the movable clamping block 7 is made of polyurethane elastomer (Shore hardness 70A), and its arc curvature radius matches the outer diameter of the standard cable. During clamping, the anti-wear layer 14 forms surface contact with the cable surface, resulting in uniform pressure distribution and effectively preventing cable surface wear. The outer diameter of the guide rod 8 is clearance-fitted with the rectangular hole 402. The first spring 16 is made of stainless steel. When the toggle disc 11 is unlocked, the first spring 16 pushes the limit block 15, causing the movable clamping block 7 to move to the right and reset, with a small reset stroke error. The limit pin 18 is made of quenched 45 steel (HRC40-45), and a copper sleeve is embedded in the limit hole 17. The preload of the second spring 19 is 5N. When the limit pin 18 is engaged in the limit hole 17, a torque of ≥2N·m must be applied to unlock it, which can both limit the movement and not affect the disassembly and assembly work.

[0050] 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. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 lightning protection distribution cabinet, characterized in that: The system includes a cabinet (1), with two sets of cabinet doors (2) rotatably connected to the front wall of the cabinet (1). Multiple sets of mounting plates (4) are arranged vertically inside the cabinet (1). Each set of mounting plates (4) has four sets of cable clamping areas arranged horizontally at its front and rear ends. Each cable clamping area includes eight sets of cable clamping grooves (401), arranged in four pairs at the front and rear ends of the mounting plates (4). A fixed clamping block (6) is fixedly connected to the left inner wall of each cable clamping groove (401), and a movable clamping block (7) is slidably connected to the right inner wall of each cable clamping groove (401). An anti-wear structure is provided between the fixed clamping block (6) and the movable clamping block (7) to prevent wear when clamping cables. Two sets of rectangular holes (402) are arranged in a front-to-back pattern on the inner wall of the mounting plate (4) and on the right side of the clamping groove (401). Two sets of guide rods (8) are fixedly connected to the right wall of the movable clamping block (7). An elastic structure for driving the movable clamping block (7) to move to the right is provided between the guide rods (8) and the rectangular holes (402). A dialing disk (11) is rotatably connected to the upper wall of the mounting plate (4) and between the two sets of rectangular holes (402) via a rotating shaft (10). A driving structure for pushing the movable clamping block (7) toward the fixed clamping block (6) is provided between the dialing disk (11) and the movable clamping block (7). A limiting structure for fixing the position is provided between the dialing disk (11) and the mounting plate (4).

2. The lightning protection distribution cabinet according to claim 1, characterized in that: The wear-resistant structure includes two sets of wear-resistant layers (14). The fixed clamping block (6) and the movable clamping block (7) are provided with arc-shaped grooves on opposite sides. The two sets of wear-resistant layers (14) are respectively provided on opposite sides of the two sets of arc-shaped grooves.

3. The lightning protection distribution cabinet according to claim 1, characterized in that: The elastic structure includes two sets of first springs (16), and two sets of guide rods (8) respectively penetrate the inner right wall of the clamping groove (401) and extend into the corresponding rectangular hole (402). One end of each set of guide rods (8) extending into the rectangular hole (402) is fixedly connected to a set of limiting blocks (15). The two sets of first springs (16) are respectively sleeved on the outer wall of a set of guide rods (8) and are both located between the limiting block (15) and the inner left wall of the rectangular hole (402).

4. A lightning protection distribution cabinet according to claim 1, characterized in that: The drive structure includes a back plate (9) and a protrusion (1101). The protrusion (1101) is disposed on the outer peripheral wall of the dial (11). The back plate (9) is fixedly connected to the upper wall of the movable clamp (7). When the dial (11) rotates, the movable clamp (7) moves toward the fixed clamp (6) through the contact between the protrusion (1101) and the back plate (9).

5. A lightning protection distribution cabinet according to claim 1, characterized in that: The limiting structure includes a set screw (13), a second spring (19), a limiting pin (18), and a limiting hole (17). The limiting hole (17) is located on the upper wall of the mounting plate (4) and between two sets of rectangular holes (402). The limiting hole (17) is located on the side of the rotating shaft (10) away from the clamping groove (401). The set screw (13), the second spring (19), and the limiting pin (18) are arranged in order from top to bottom on the inner wall of the dial (11). The end of the limiting pin (18) away from the second spring (19) passes through the lower wall of the dial (11) and extends to the lower side of the dial (11). When the movable clamping block (7) moves to cooperate with the fixed clamping block (6) through the driving structure, the end of the limiting pin (18) away from the second spring (19) extends into the limiting hole (17).

6. A lightning protection distribution cabinet according to claim 1, characterized in that: The cabinet (1) has multiple sets of partitions (3) that are distributed vertically on the left and right sides of its inner side. The mounting plate (4) is snapped between two sets of partitions (3) that are opposite each other on the left and right.

7. A lightning protection distribution cabinet according to claim 1, characterized in that: The upper end of the rotating shaft (10) passes through the upper wall of the dial (11) and is fixedly connected to a lever (12) for convenient rotation of the dial (11).

8. A lightning protection distribution cabinet according to claim 1, characterized in that: The mounting plate (4) has multiple sets of mounting grooves (5) arranged in a left-right distribution on its inner wall and at the center position in the front-back direction.

9. A lightning protection distribution cabinet according to claim 1, characterized in that: The outside of the cable clamping groove (401) is provided with an opening for the cable to enter.

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