Line protection device for electric power design
By designing the top cover positioning and insert extrusion structure inside the protection box, the problem of inconvenient cable operation in the protection device was solved, achieving stable clamping and neat arrangement of the cable, and improving construction efficiency and maintenance convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PUER JUNYAN POWER ENG DESIGN CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-04-21
AI Technical Summary
Existing line protection devices are inconvenient to operate when protecting long cables, easily causing cables to become tangled or bent, affecting their service life. They are also time-consuming and labor-intensive, increasing manpower costs, and making it difficult to ensure the neat arrangement of cables in the protection box.
A line protection device is designed, which includes a protective box, a top cover, a groove, a panel, a limiting groove, a compression plate, and a spring. Through the positioning of the top cover, the embedding of the panel, and the cooperation of the spring compression plate, the cable is stably clamped, ensuring that the cable is neatly arranged in the protective box, which facilitates maintenance and repair.
It improves the neatness of cables inside the protection box and construction efficiency, reduces labor costs, simplifies cable insertion and assembly operations, and enhances the convenience of maintenance and repair.
Smart Images

Figure CN224153909U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power technology, and in particular to a line protection device for power design. Background Technology
[0002] Cables are used for multiple functions such as control installation, equipment connection, and power transmission. They are a common and indispensable part of power equipment. In most existing line protection devices, cables are simply installed in junction boxes. Over time, cables can easily become tangled and damaged cables are difficult to find during maintenance, increasing the difficulty of maintenance for repair workers.
[0003] Existing patents, such as Chinese Patent Publication No. CN222147097U, disclose a line protection device for power design, relating to the field of power equipment technology. This device includes a protection box and an isolation component located at the bottom of the protection box. It also includes an adjustment and sealing unit located outside the protection box and a positioning and separating unit located above the isolation component. The adjustment and sealing unit includes a rectangular column, a first lead screw, a rectangular support block, a support sleeve, a support block, and a sealing cover. The positioning and separating unit includes a support column, a lower arc plate, a strip box, a second lead screw, a guide block, a support horizontal plate, and an upper arc plate. In this invention, controlling the forward and reverse rotation of the first lead screw causes the rectangular support block, threadedly connected to the first lead screw, to be subjected to force, which can drive the support sleeve to rise and fall on the rectangular column to adjust its exposed area. The support block at the top of the support sleeve can then help the sealing cover rise and fall to adjust the distance between it and the protection box, achieving sealing and opening operations. The opening at the top of the device has good sealing performance and is easy to operate.
[0004] While the aforementioned patented technology can protect cables, when protecting longer cables, the structure requires passing one end of the cable through a conduit. Due to the cable's length, this process is extremely inconvenient. Firstly, longer cables are prone to tangling and bending during insertion, potentially damaging the cable insulation and even the internal conductor structure, affecting the cable's normal use and lifespan. Secondly, manually threading long cables is time-consuming and labor-intensive, reducing construction efficiency, increasing labor costs, and making it difficult to ensure the cable's neat arrangement within the conduit, which is detrimental to subsequent maintenance and repair. Utility Model Content
[0005] The purpose of this utility model is to solve the problem in the existing technology that the cable length is too long and the operation is extremely inconvenient when passing through the protection box, and to propose a line protection device for power design.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a line protection device for power design, comprising a protection box, the top of which is covered by a top cover, and grooves are formed on the top of the protection box near both ends, with inserts embedded inside each groove, the top of each insert being fixedly connected to the bottom of the top cover; second arc grooves are formed at equal intervals on the inner wall of the bottom of the protection box, with protective pads embedded and fixedly connected inside each of the second arc grooves; an extrusion plate is provided inside the protection box above each of the second arc grooves; three cylinders are provided at the bottom of the top cover above each of the extrusion plates, each cylinder having a protruding hole inside, and a limiting plate inside each of the protruding holes; a vertical rod is fixedly connected to the bottom of each limiting plate, the bottom of each vertical rod being fixedly connected to the top of the extrusion plate; and a spring is fixedly connected to the top of each limiting plate, the top of which is fixedly connected to the bottom of the top cover.
[0007] Preferably, the inner walls on both sides of the groove are provided with limiting grooves, and limiting plates are embedded and slidably connected inside the limiting grooves, and the limiting plates are fixedly connected to the inserts.
[0008] Preferably, the bottom of each panel is provided with a first arc groove.
[0009] Preferably, the protective box has fixing blocks fixedly connected to both sides of the side walls near the center, and fixing plates fixedly connected to both sides of the top cover above the fixing blocks. The top of each fixing block has a slot, and a rotating column is embedded in the slot. The surface of the rotating column has a sliding hole, and a card plate is embedded in the sliding hole. A screw rod is threaded through and connected to the center of the card plate.
[0010] Preferably, the top of the rotating column passes through the fixed plate and is rotatably connected to its bearing, and a first rotating component is fixedly connected to the top of the rotating column.
[0011] Preferably, the bottom of the screw is rotatably connected to the inner wall of the bottom of the sliding hole and to its bearing, and the top of the screw penetrates the inner wall of the top of the sliding hole and is rotatably connected to its bearing.
[0012] Preferably, a second rotating component is fixedly connected to the top of the screw.
[0013] Preferably, one end of both the fixing block and the fixing plate is rounded.
[0014] Preferably, the bottom of the extrusion plates are all arc grooves.
[0015] Preferably, the protective box has grooves on its top and near both sides, and sealing gaskets are embedded and fixedly connected inside the grooves.
[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0017] In this invention, the cable can be placed into the groove and the second arc groove by opening the top cover. Then, by closing the top cover, the cable ends are positioned by the insert plate. Simultaneously, the cooperation of springs, compression plates, and other components ensures the cable is securely clamped after placement, ensuring neat arrangement of the cable within the protective box and facilitating subsequent maintenance and repair. Furthermore, the design of the rotating column and clamping plate makes assembly and cable insertion more convenient, improving construction efficiency and reducing labor costs. Attached Figure Description
[0018] Figure 1 This utility model provides a three-dimensional view of the overall structure of a line protection device for power design;
[0019] Figure 2 This utility model provides an overall structural cross-sectional view of a line protection device for power design;
[0020] Figure 3 This utility model proposes a line protection device for power design. Figure 2 Enlarged view of the structure of area A in the middle;
[0021] Figure 4 This utility model provides a perspective view of the protective box structure of a line protection device for power design;
[0022] Figure 5 This utility model presents a partial three-dimensional structural view of a line protection device for power design.
[0023] Legend: 1. Protective box; 2. Top cover; 3. Groove; 4. Panel; 5. Limiting groove; 6. Limiting plate; 7. First arc groove; 8. Second arc groove; 9. Protective pad; 10. Cylinder; 11. Protruding hole; 12. Spring; 13. Limiting plate; 14. Vertical rod; 15. Extrusion plate; 16. Fixing block; 17. Fixing plate; 18. Slot; 19. Rotating column; 20. Sliding hole; 21. Clamping plate; 22. Screw; 23. First rotating component; 24. Second rotating component; 25. Groove; 26. Sealing gasket. Detailed Implementation
[0024] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0026] Example 1, as Figure 1-5 As shown, this utility model provides a line protection device for power design, including a protection box 1. The top of the protection box 1 is covered with a top cover 2. The top of the protection box 1 and near both ends are provided with grooves 3. The grooves 3 are all embedded with plates 4. The top of the plates 4 are fixedly connected to the bottom of the top cover 2. The bottom inner wall of the protection box 1 is provided with second arc grooves 8 at equal intervals. The second arc grooves 8 are all embedded with and fixedly connected with protective pads 9. The protection box 1 is provided with extrusion plates 15 inside and above the second arc grooves 8. The bottom of the top cover 2 and above the extrusion plates 15 is provided with three cylinders 10. The cylinders 10 are all provided with protrusions 11 inside. The protrusions 11 are all provided with limiting plates 13 inside. The bottom of the limiting plates 13 is fixedly connected with vertical rods 14. The bottom of the vertical rods 14 is fixedly connected to the top of the extrusion plates 15. The top of the limiting plates 13 is fixedly connected with springs 12. The top of the springs 12 is fixedly connected to the bottom of the top cover 2.
[0027] The overall effect of Embodiment 1 is as follows: the top of the protective box 1 is covered by a top cover 2; the top of the protective box 1 and near both ends are provided with grooves 3; each groove 3 has a panel 4 embedded inside; the top of the panel 4 is fixedly connected to the bottom of the top cover 2; the bottom inner wall of the protective box 1 has equally spaced second arc grooves 8; each second arc groove 8 has a protective pad 9 embedded and fixedly connected inside, which can effectively place the cable from the groove 3 and embed it inside the protective pad 9; and extrusion sleeves are provided inside the protective box 1 above the second arc grooves 8. Three cylinders 10 are provided at the bottom of the pressure plate 15 and the top cover 2, and above the extrusion plate 15. Each cylinder 10 has a protruding hole 11 inside, and each protruding hole 11 has a limiting plate 13 inside. The bottom of each limiting plate 13 is fixedly connected to a vertical rod 14, and the bottom of each vertical rod 14 is fixedly connected to the top of the extrusion plate 15. The top of each limiting plate 13 is fixedly connected to a spring 12, and the top of each spring 12 is fixedly connected to the bottom of the top cover 2. This allows the spring 12 to push the limiting plate 13 and the vertical rod 14, and the extrusion plate 15 to clamp and fix the cable.
[0028] Example 2, as Figure 1-5As shown, limit grooves 5 are provided on both inner walls of the groove 3, and limit plates 6 are embedded and slidably connected inside the limit grooves 5. The limit plates 6 are fixedly connected to the insert plate 4. The bottom of the insert plate 4 is provided with a first arc groove 7. Fixing blocks 16 are fixedly connected to both sides of the protective box 1 near the center. Fixing plates 17 are fixedly connected to both sides of the top cover 2 above the fixing blocks 16. The top of the fixing blocks 16 is provided with a slot 18. A rotating post 19 is embedded inside the slot 18. A sliding hole 20 is provided on the surface of the rotating post 19. A card plate 21 is embedded inside the sliding hole 20. The center of the card plate 21 is through and screwed. The screw 22 is connected to the threaded connection; the top of the rotating column 19 passes through the fixing plate 17 and is rotatably connected to its bearing, and the top of the rotating column 19 is fixedly connected to the first rotating component 23; the bottom of the screw 22 is connected to the bottom inner wall of the sliding hole 20 and is rotatably connected to its bearing, and the top of the screw 22 passes through the top inner wall of the sliding hole 20 and is rotatably connected to its bearing; the top of the screw 22 is fixedly connected to the second rotating component 24; one end of the fixing block 16 and the fixing plate 17 are both rounded; the bottom of the extrusion plate 15 is both arc groove; the top of the protective box 1 and near both sides are provided with grooves 25, and sealing gaskets 26 are embedded and fixedly connected inside the grooves 25.
[0029] The overall effect of embodiment 2 is as follows: Limiting grooves 5 are formed on both inner walls of the groove 3; limiting plates 6 are embedded and slidably connected inside the limiting grooves 5; the limiting plates 6 are fixedly connected to the insert plate 4, thus limiting the insert plate 4 by the limiting plates 6 and the limiting grooves 5; a first arc groove 7 is formed on the bottom of the insert plate 4, which resists the cable; fixing blocks 16 are fixedly connected to both sides of the protective box 1 near the center; and the top cover 2... Fixing plates 17 are fixedly connected to both sides and above the fixing block 16. Each fixing block 16 has a slot 18 on its top, and a rotating post 19 is embedded inside each slot 18. A sliding hole 20 is formed on the surface of the rotating post 19, and a locking plate 21 is embedded inside the sliding hole 20. A screw 22 is threaded through and connected to the center of the locking plate 21. This allows the rotating post 19 to rotate, causing the locking plate 21 to rotate 90 degrees inside the slot 18. Then, the screw 22 rotates, causing the locking plate 21 to rise, allowing the top cover 2 to be raised. The device achieves a fixed effect; the top of the rotating column 19 passes through the fixing plate 17 and is rotatably connected to its bearing. The top of the rotating column 19 is fixedly connected to the first rotating component 23, which can drive the rotating column 19 to rotate; the bottom of the screw 22 is rotatably connected to the inner wall of the bottom of the sliding hole 20 and is rotatably connected to its bearing. The top of the screw 22 passes through the inner wall of the top of the sliding hole 20 and is rotatably connected to its bearing, which can position both ends of the screw 22; the top of the screw 22 is fixedly connected to the second rotating component 24, which can drive the screw 22 to rotate; the rounded corners at one end of the fixing block 16 and the fixing plate 17 can improve the safety of the device; the bottom of the extrusion plate 15 has arc grooves, which can compress and fix both ends of the cable; the top of the protective box 1 and near both sides have slots 25, and the interior of each slot 25 is fitted with and fixedly connected to a sealing gasket 26, which can improve the sealing between the top cover 2 and the protective box 1.
[0030] Working principle: By opening the top cover 2, the cable can be placed into the groove 3 and the second arc groove 8. At this time, the protective pad 9 protects the cable. Then, by closing the top cover 2, the insert plate 4 can be inserted into the groove 3, and the limiting plate 6 can be inserted into the limiting groove 5. The insert plate 4 can then position both ends of the cable. At the same time, the spring 12 can also push the limiting plate 13 and the vertical rod 14 to descend, allowing the pressing plate 15 to press and fix the cable. This can securely clamp the cable after placement, ensuring that the cable is neatly arranged in the protective box 1, facilitating subsequent maintenance and repair. At this time, the clamping plate 21 will also be inserted into the clamping groove 18. The first rotating component 23 can then be rotated to drive the rotating column 19 90 degrees. The rotating column 19 can then drive the clamping plate 21. Then, by rotating the second rotating component 24, the screw 22 can be rotated. The rotation of the screw 22 can lift the clamping plate 21, which can fix the top cover 2. This makes the assembly and cable insertion of the device more convenient, improves construction efficiency, and reduces labor costs.
[0031] The wiring diagram of the spring 12 in this utility model is common knowledge in the field. Its working principle is a well-known technology. The appropriate model is selected according to the actual use. Therefore, the control method and wiring arrangement of the spring 12 will not be explained in detail.
[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A line protection device for electric power design, comprising a protection box (1), characterized in that: The protective box (1) is covered with a top cover (2). The top of the protective box (1) and near both ends are provided with grooves (3). Each groove (3) is embedded with a panel (4). The top of the panel (4) is fixedly connected to the bottom of the top cover (2). The bottom inner wall of the protective box (1) is provided with second arc grooves (8) at equal intervals. Each second arc groove (8) is embedded with and fixedly connected with a protective pad (9). Each protective box (15) is provided inside the protective box (1) and above the second arc groove (8). Three cylinders (10) are provided at the bottom of the top cover (2) and above the extrusion plate (15). Each cylinder (10) has a protruding hole (11) inside. Each protruding hole (11) has a limiting plate (13) inside. Each limiting plate (13) has a vertical rod (14) fixedly connected to its bottom. The bottom of each vertical rod (14) is fixedly connected to the top of the extrusion plate (15). Each limiting plate (13) has a spring (12) fixedly connected to its top. The top of each spring (12) is fixedly connected to the bottom of the top cover (2).
2. A line protection device for power design according to claim 1, characterized in that: Limiting grooves (5) are provided on both sides of the inner wall of the groove (3). Limiting plates (6) are embedded and slidably connected inside the limiting grooves (5). The limiting plates (6) are fixedly connected to the inserts (4).
3. A line protection device for power design according to claim 1, characterized in that: The bottom of each panel (4) is provided with a first arc groove (7).
4. A line protection device for power design according to claim 1, characterized in that: The protective box (1) has fixed blocks (16) fixedly connected to both sides of the side walls and near the center. The top cover (2) has fixed plates (17) fixedly connected to both sides above the fixed blocks (16). The top of the fixed blocks (16) has slots (18). The slots (18) have rotating columns (19) embedded inside. The rotating columns (19) have sliding holes (20) on their surfaces. The sliding holes (20) have card plates (21) embedded inside. The card plates (21) have screws (22) threaded through and connected to the center of the card plates (21).
5. A line protection device for power design according to claim 4, characterized in that: The top of the rotating column (19) passes through the fixed plate (17) and is rotatably connected to its bearing. The top of the rotating column (19) is fixedly connected to the first rotating component (23).
6. A line protection device for power design according to claim 4, characterized in that: The bottom of the screw (22) is rotatably connected to the inner wall of the bottom of the sliding hole (20) and its bearing, and the top of the screw (22) penetrates the inner wall of the top of the sliding hole (20) and is rotatably connected to its bearing.
7. A line protection device for power design according to claim 6, characterized in that: The top of the screw (22) is fixedly connected to a second rotating part (24).
8. A line protection device for power design according to claim 4, characterized in that: Both the fixing block (16) and the fixing plate (17) have rounded corners at one end.
9. A line protection device for power design according to claim 1, characterized in that: The bottom of the extrusion plate (15) is an arc groove.
10. A line protection device for power design according to claim 1, characterized in that: The top and near both sides of the protective box (1) are provided with grooves (25), and sealing gaskets (26) are embedded and fixedly connected inside the grooves (25).
Citation Information
Patent Citations
Line protection device for electric power design
CN222147097U