Electric power ring main unit with wire arrangement structure
By introducing plug rods and limit components into the power ring main unit, the problem of cumbersome bolt operation is solved, enabling rapid fixing and disassembly of the wire harness, improving maintenance efficiency, reducing bolt loss, and enhancing the stability of the connecting block.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-03-17
AI Technical Summary
The existing power ring main unit requires tightening multiple bolts when fixing the wiring harness, which is cumbersome and can easily lead to bolt loss, affecting the fixing effect of the connection block.
The design employs a plug and limit assembly. The plug is inserted into the slot and fixed by the limit rod. Combined with the limit spring and push rod, the plug can be quickly installed and removed. The clamping plate is connected by a magnet for easy replacement.
It enables quick fixing and disassembly of wire harnesses, avoids the hassle of bolt operation, improves maintenance efficiency, reduces the risk of bolt loss, and enhances the stability of the connecting block.
Smart Images

Figure CN224006333U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power ring main unit technology, specifically a power ring main unit with a cable management structure. Background Technology
[0002] A ring main unit (RMU) is an electrical device consisting of a group of power transmission and distribution equipment (high-voltage switchgear) housed in a metal or non-metal insulated cabinet or assembled into a modular ring network power supply unit. Its core components utilize load switches and fuses. It offers advantages such as simple structure, small size, low cost, improved power supply parameters and performance, and enhanced power supply safety. It is widely used in substations and prefabricated substations in load centers such as urban residential areas, high-rise buildings, large public buildings, and factories.
[0003] The prior art disclosure number CN220914767U discloses a power construction ring main unit with a cable management structure, including a box body. Several ventilation openings are symmetrically arranged at both ends of the outer side wall of the box body. A screening screen is fixedly installed inside each ventilation opening. A motor is fixedly installed inside the box body. A rotating rod is fixedly connected to the output end of the motor. Several fans are fixedly connected around the perimeter of the rotating rod on the side away from the motor. A filter screen is fixedly installed inside the box body near the fans. A placement plate is fixedly installed inside the box body on the side away from the filter screen. Several grooves are symmetrically arranged on the surface of the placement plate, making the cable harnesses inside the ring main unit cleaner, neater, and more aesthetically pleasing. When cable harnesses malfunction, workers can easily and quickly repair them, thereby improving work efficiency and making inspections more intuitive.
[0004] With the above configuration, the existing ring main unit, by setting a combing assembly, allows the clamping plate on the combing assembly to slide against the clamping slot, thereby bringing the compression plate inside the combing assembly into contact with the wire harness and fixing the combing assembly to the placement plate. Each wire harness is placed individually in its placement slot, so when a wire harness malfunctions, the search time can be reduced. The clamping plate also clamps the lower end of the wire harness. However, the existing ring main unit has the following drawbacks during operation:
[0005] When using the existing ring main unit, multiple first bolts need to be tightened to fix the connecting block, thereby securing the wire harness. Tightening multiple bolts is cumbersome, and carrying multiple bolts can easily lead to their loss, resulting in the inability to fix the connecting block. Utility Model Content
[0006] This utility model aims to provide a power ring network cabinet with a cable management structure, mainly to solve the technical problems of existing technology where it is troublesome to fix the connecting plate by tightening multiple bolts and inconvenient to fix the connecting block.
[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0008] A power ring main unit with a cable management structure includes a cabinet, a placement plate, and a connecting block. The placement plate is fixed to the inner wall of the cabinet. Symmetrical slots are provided on the surface of the placement plate. Insert rods are inserted into the inner walls of the slots. The other end of the insert rods is fixed to one side of the connecting block. Movable grooves are provided on the inner walls of the slots. Limiting components are installed on the inner walls of the movable grooves.
[0009] The working principle and beneficial effects of this utility model:
[0010] 1. Working principle: When it is necessary to fix the wire harness, first place the wire harness on the placement plate, then push the connecting block to insert the plug into the slot, so that the plug squeezes the limiting rod and inserts the limiting rod into the limiting groove, and then limit the plug. At this time, put the lower end of the wire harness into the clamping plate and fix it.
[0011] 2. Beneficial effects:
[0012] Existing technology uses a combing assembly where the clamping plate and slots slide, allowing the compression plate inside the combing assembly to contact the wire harness, thus fixing the combing assembly to the placement plate. Each wire harness is placed individually in its placement slot, reducing search time when a wire harness malfunctions. A technical issue arises with the use of clamping plates, which hold the lower end of the wire harness. However, existing ring main units require tightening multiple bolts to secure the connecting blocks and thus the wire harness, which is cumbersome. The previous method was cumbersome, and carrying multiple bolts could easily lead to bolt loss, making it impossible to secure the connecting block. This solution uses a plug rod, a limiting component, and a placement block. The plug rod and the limiting component work together to limit the plug rod after it is inserted into the slot. When the connecting block needs to be disassembled, pressing the push rod will disengage the limiting rod from the limiting slot, allowing the plug rod to be pulled out. Installation and disassembly are very convenient and quick. The placement block allows for efficient replacement of damaged parts inside the clamping plate, avoiding technical problems such as unstable wire harness clamping.
[0013] Preferably, the limiting component includes a limiting rod that is slidably connected to the inner wall of the movable groove. A limiting spring is fixedly connected to the inner wall of the movable groove, and the other end of the limiting spring is fixedly connected to the limiting rod. A sliding groove is formed in the inner wall of the movable groove, and a sliding rod is slidably connected to the inner wall of the sliding groove. A push rod is fixedly connected to the lower surface of the sliding rod, and the push rod passes through and is slidably connected to the placement plate. One side of the sliding rod is fixedly connected to the outer wall of the limiting rod. A limiting groove is formed on the upper surface of the insertion rod, and the limiting rod is inserted into the limiting groove. By setting the limiting component, the insertion rod can be fixed, and the insertion rod and connecting block can be easily disassembled. Fixing the wiring harness is very convenient and saves time.
[0014] The inner wall of the enclosure has multiple placement slots, and the inner wall of each slot has a placement block. One side of each placement block has a symmetrical rotating groove, and the inner wall of the rotating groove is rotatably connected to a rotating rod. A clamping plate is fixed to the outer wall of the rotating rod. By using placement blocks and rotating rods, the clamping plate can be prevented from bending and breaking over time when clamping large wire harnesses.
[0015] A first magnet is fixed to the inner wall of the placement slot, and a second magnet is fixed to the side of the placement block away from the rotating slot. The first magnet and the second magnet attract each other. By setting the first magnet and the second magnet, the placement block can be disassembled and replaced when the internal parts of the clamping plate are damaged.
[0016] The outer wall of the limiting rod has a bevel facing the opening of the slot, and the limiting groove abuts against the bevel. This facilitates the installation of the insertion rod.
[0017] A push plate is fixed to the end of the push rod away from the slide rod, and a rubber pad is fixed to the outer wall of the push plate. This increases the friction between the fingers and the push plate, preventing slippage, and the push plate also prevents fingers from being injured. Attached Figure Description
[0018] Figure 1 This is a structural diagram of the present utility model patent;
[0019] Figure 2 This is a diagram of the internal structure of this utility model patent;
[0020] Figure 3 This is an internal cross-sectional view of the present utility model patent.
[0021] Figure 4 This is a side sectional view of the structure of this utility model patent;
[0022] Figure 5 This utility model patent Figure 3 Structural diagram at point A;
[0023] Figure 6 This utility model patent Figure 4 Structural diagram at point B.
[0024] The reference numerals in the accompanying drawings of the instruction manual include: 1. Box body; 2. Placement plate; 3. Connecting block; 4. Slot; 5. Insert rod; 6. Movable groove; 7. Limiting rod; 8. Limiting spring; 9. Slide groove; 10. Slide rod; 11. Push rod; 12. Limiting groove; 13. Placement groove; 14. Placement block; 15. Rotating groove; 16. Rotating rod; 17. Clamping plate; 18. First magnet; 19. Second magnet; 20. Push plate. Detailed Implementation
[0025] 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.
[0026] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, a power ring main unit with a cable management structure includes a housing 1, a placement plate 2, and a connecting block 3. The placement plate 2 is fixed to the inner wall of the housing 1. Symmetrical slots 4 are formed on the surface of the placement plate 2. A guide rod is inserted into the side of the placement plate 2 away from the slot 4. The guide rod serves to fix the connecting block 3 and prevent it from moving. A plug rod 5 is inserted into the inner wall of the slot 4. The other end of the plug rod 5 is fixed to one side of the connecting block 3. A movable groove 6 is formed on the inner wall of the slot 4. A limit component is installed on the inner wall of the movable groove 6. The limit component includes a limit rod 7. The limit rod 7 is located in the movable groove 6. The inner wall of the groove 6 is slidably connected, and the inner wall of the movable groove 6 is fixedly connected to a limiting spring 8. The other end of the limiting spring 8 is fixedly connected to a limiting rod 7. The inner wall of the movable groove 6 is provided with a sliding groove 9. The inner wall of the sliding groove 9 is slidably connected to a sliding rod 10. The lower surface of the sliding rod 10 is fixedly connected to a push rod 11. The push rod 11 passes through the placement plate 2 and is slidably connected to it. One side of the sliding rod 10 is fixedly connected to the outer wall of the limiting rod 7. The upper surface of the insertion rod 5 is provided with a limiting groove 12. The limiting rod 7 is inserted into the limiting groove 12. The end of the push rod 11 away from the sliding rod 10 is fixedly connected to a push plate 20. The outer wall of the push plate 20 is fixedly connected to a rubber pad.
[0027] like Figure 4 and Figure 6 As shown, the inner wall of the box 1 is provided with multiple placement slots 13, and the inner wall of the placement slot 13 is provided with a placement block 14. One side of the placement block 14 is provided with a symmetrical rotating groove 15. The inner wall of the rotating groove 15 is rotatably connected to a rotating rod 16. The outer wall of the rotating rod 16 is fixedly connected to a clamping plate 17. The inner wall of the placement slot 13 is fixedly connected to a first magnet 18. The side of the placement block 14 away from the rotating groove 15 is fixedly connected to a second magnet 19. The first magnet 18 and the second magnet 19 attract each other, which makes it easy to disassemble and replace the placement block 14.
[0028] As can be seen from the above, the specific embodiments of this utility model are as follows:
[0029] When it is necessary to fix the wire harness, first place the wire harness on the placement plate 2, then push the connecting block 3 to insert the plug rod 5 into the slot 4, so that the plug rod 5 presses against the limiting rod 7, the limiting rod 7 presses against the limiting spring 8, the limiting rod 7 drives the slide rod 10 to move, the slide rod 10 drives the push rod 11 to move, at this time, under the action of the rebound force of the limiting spring 8, the limiting rod 7 is inserted into the limiting groove 12 to limit the plug rod 5. At this time, put the lower end of the wire harness into the clamping plate 17 and fix it. When it is necessary to repair the wire harness, press the push plate 20 to drive the push rod 11 to move, the push rod 11 drives the slide rod 10 to move, the slide rod 10 drives the limiting rod 7 to disengage from the limiting groove 12, then pull the connecting block 3 to pull out the plug rod 5, and then the wire harness can be repaired.
[0030] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A power ring main unit having a wire arrangement structure, comprising a box (1), a placing plate (2) and a connecting block (3), characterized in that, The placing plate (2) is fixed to the inner wall of the box body (1), the surface of the placing plate (2) is provided with symmetrical insertion slots (4), the inner wall of the insertion slot (4) is inserted with an insertion rod (5), the other end of the insertion rod (5) is fixedly connected with one side of the connecting block (3), the inner wall of the insertion slot (4) is provided with a movable slot (6), and the inner wall of the movable slot (6) is provided with a limiting assembly.
2. The electrical ring main unit with wire arrangement structure according to claim 1, characterized in that: The limiting assembly comprises a limiting rod (7), the limiting rod (7) is slidably connected to the inner wall of the movable slot (6), the inner wall of the movable slot (6) is fixedly connected with a limiting spring (8), the other end of the limiting spring (8) is fixedly connected with the limiting rod (7), the inner wall of the movable slot (6) is provided with a sliding groove (9), the inner wall of the sliding groove (9) is slidably connected with a sliding rod (10), the lower surface of the sliding rod (10) is fixedly connected with a push rod (11), the push rod (11) penetrates through the placing plate (2) and is slidably connected with the same, one side of the sliding rod (10) is fixedly connected with the outer wall of the limiting rod (7), the upper surface of the insertion rod (5) is provided with a limiting slot (12), and the limiting rod (7) is inserted into the limiting slot (12).
3. The electrical ring main unit with wire arrangement structure according to claim 1, characterized in that: The inner wall of the box body (1) is provided with a plurality of placing slots (13), the inner wall of the placing slot (13) is provided with a placing block (14), one side of the placing block (14) is provided with symmetrical rotating slots (15), the inner wall of the rotating slot (15) is rotatably connected with a rotating rod (16), and the outer wall of the rotating rod (16) is fixedly connected with a clamping plate (17).
4. The electrical ring main unit with wire arrangement structure according to claim 3, characterized in that: The inner wall of the placing slot (13) is fixedly connected with a first magnet (18), and the side, away from the rotating slot (15), of the placing block (14) is fixedly connected with a second magnet (19).
5. The electrical ring main unit with wire arrangement structure according to claim 2, characterized in that: The outer wall of the limiting rod (7) is provided with an inclined surface facing the opening of the insertion slot (4), and the limiting slot (12) is in abutment with the inclined surface.
6. The electrical ring main unit with wire arrangement structure according to claim 2, characterized in that: The end, away from the sliding rod (10), of the push rod (11) is fixedly connected with a push disc (20), and the outer wall of the push disc (20) is fixedly connected with a rubber pad.
Citation Information
Patent Citations
Power construction ring main unit with wire arrangement structure
CN220914767U