Locking mechanism of ring main unit and ring main unit
The locking mechanism of the ring main unit utilizes a rotary handle and bevel gear meshing to achieve rapid power disconnection, solving the problem of the ring main unit circuit not being able to be shut down in time, ensuring safety and orderly wiring, and improving maintenance efficiency.
Patent Information
- Application Number
- CN202423074175.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-13
AI Technical Summary
The existing locking mechanism of the ring main unit can easily lead to the circuit being energized when the door is opened, making it impossible to close in time, which poses a safety hazard.
A locking mechanism was designed that uses a rotating handle to drive a bevel gear to engage and disconnect the circuit connection, achieving rapid power-off. The mechanism also uses a label clip and a clamp to organize the wiring and prevent it from becoming tangled.
It enables rapid and safe circuit disconnection during maintenance or emergencies, ensuring operator safety, maintaining neat and orderly wiring, and improving maintenance efficiency and safety.
Smart Images
Figure CN223540103U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ring main unit technology, and in particular to a locking mechanism for a ring main unit and a ring main unit. Background Technology
[0002] A ring main unit (RMU) is an electrical device consisting of a set of power transmission and distribution equipment housed in a metal or non-metal insulated cabinet or assembled into a modular ring network power supply unit. Its core components are load switches and fuses. Load switches control the high-voltage circuit, while fuses protect the high-voltage circuit. RMUs are widely used in substations and prefabricated substations in load centers such as urban residential areas, high-rise buildings, and factories.
[0003] In the prior art, some ring main unit locking mechanisms, when used in specific applications, can easily cause accidents if the cabinet is powered on when the ring main unit door is opened, as they cannot shut off the main circuit switch of the ring main unit, thus causing the circuit to lose power. Therefore, in order to address the above-mentioned problems, a locking mechanism for a ring main unit and a ring main unit are proposed. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a locking mechanism for a ring main unit and a ring main unit, aiming to improve the problem that existing technologies cannot shut down and de-energize the circuit of the ring main unit.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a locking mechanism for a ring main unit and a ring main unit, comprising a cabinet body, a rotating door rotatably connected to the front side of the cabinet body, a partition plate fixedly connected inside the cabinet body, a rotating handle rotatably connected inside the rotating door, a bevel gear I fixedly connected to the rear side of the rotating handle, a through hole opened on the outside of the partition plate, electrical components fixedly connected inside the cabinet body, a locking block fixedly connected inside the partition plate, a rotating rod rotatably connected inside the partition plate, a bevel gear II fixedly connected to the outside of the rotating rod, multiple elliptical blocks fixedly connected to the outside of the bevel gear II, an arc-shaped block rotatably connected to the outside of the elliptical blocks, multiple support blocks fixedly connected inside the partition plate, a connecting block rotatably connected inside the arc-shaped block, a cable routing chamber provided inside the cabinet body, two fixing blocks fixedly connected inside the cable routing chamber, and a label assembly for identification fixedly connected to the outside of the fixing blocks.
[0006] As a further description of the above technical solution:
[0007] The label assembly includes multiple label clips, which are fixedly connected to the outside of the fixing block, and the multiple label clips are arranged linearly outside the fixing block.
[0008] As a further description of the above technical solution:
[0009] The fixing block has two sliding grooves inside and a limiting groove outside. A limiting rod is fixedly connected inside the limiting groove. A limiting block is slidably connected outside the limiting rod. A spring is sleeved on the outside of the limiting block. A connecting rod is rotatably connected outside the limiting block. An installation block is rotatably connected to the front side of the two connecting rods. A clamping plate is fixedly connected outside the installation block. Two sliders are fixedly connected outside the clamping plate. A clamping plate is fixedly connected inside the fixing block.
[0010] As a further description of the above technical solution:
[0011] The outer part of the elliptical block is rotatably connected to the inside of the partition plate, and the outer part of the bevel gear II is rotatably connected to the inside of the partition plate.
[0012] As a further description of the above technical solution:
[0013] The external parts of the electrical component and the external parts of the card block are electrically connected, and the external parts of the first bevel gear and the external parts of the second bevel gear are meshed.
[0014] As a further description of the above technical solution:
[0015] The bottom of the connecting block is rotatably connected to the top of the support block, and the outside of the connecting block engages with the inside of the locking block.
[0016] As a further description of the above technical solution:
[0017] One side of the spring is fixedly connected to the inside of the limiting groove, and the other side of the spring is fixedly connected to the outside of the limiting block.
[0018] As a further description of the above technical solution:
[0019] The limiting block is externally slidably connected to the inside of the fixed block, and the limiting block is externally slidably connected to the inside of the limiting groove.
[0020] This utility model has the following beneficial effects:
[0021] 1. In this utility model, the elliptical block rotates relative to the arc-shaped block by rotating the rotating rod, causing the connecting block and the locking block to disengage, thereby realizing the function of shutting off the power to the ring main unit circuit. In case of maintenance or emergency, the operator can quickly and safely cut off the circuit, effectively avoiding safety accidents caused by circuit failure or unexpected situations, and ensuring the safety of the operator and the integrity of the equipment.
[0022] 2. In this utility model, the label clips in the cable management compartment can mark different cables, enabling operators to quickly identify the purpose and connection status of different cables, thus facilitating cable management and maintenance. Clamping plate one, in conjunction with clamping plate two, can clamp and categorize the cables inside the cabinet, keeping them neat and orderly and preventing them from becoming tangled and chaotic. Attached Figure Description
[0023] Figure 1 This utility model provides a locking mechanism for a ring main unit and a perspective view of the ring main unit.
[0024] Figure 2 This is a schematic diagram of a locking mechanism and a rotating door structure of a ring main unit proposed in this utility model.
[0025] Figure 3 This is a schematic diagram of the locking mechanism and partition plate structure of a ring main unit proposed in this utility model.
[0026] Figure 4 for Figure 3 Enlarged view of point A in the middle;
[0027] Figure 5 This is a schematic diagram of a locking mechanism and a slider structure of a ring main unit proposed in this utility model.
[0028] Figure 6 This is a schematic diagram of the locking mechanism and mounting block structure of a ring main unit proposed in this utility model.
[0029] Legend:
[0030] 1. Cabinet body; 2. Rotating door; 3. Divider; 4. Rotating handle; 5. Bevel gear one; 6. Through hole; 7. Electrical components; 8. Locking block; 9. Rotating rod; 10. Bevel gear two; 11. Elliptical block; 12. Arc-shaped block; 13. Support block; 14. Connecting block; 15. Cable tray; 16. Fixing block; 17. Label holder; 18. Slide groove; 19. Limiting groove; 20. Limiting rod; 21. Limiting block; 22. Spring; 23. Connecting rod; 24. Mounting block; 25. Clamping plate one; 26. Slider; 27. Clamping plate two. Detailed Implementation
[0031] 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.
[0032] Reference Figures 1 to 3As shown, this utility model provides an embodiment of a locking mechanism for a ring main unit and the ring main unit itself. The ring main unit includes a cabinet 1, which serves as the external frame of the entire device. A rotating door 2 is rotatably connected to the front of the cabinet 1, providing protection for the interior of the cabinet 1 and enabling flexible opening and closing. A partition plate 3 is fixedly connected inside the cabinet 1, dividing the internal space and improving the rationality of the layout. A rotating handle 4 is rotatably connected inside the rotating door 2, serving as the component for operating the locking mechanism. A bevel gear 5 is fixedly connected to the rear of the rotating handle 4, meshing with a bevel gear 10. A through hole 6 is provided on the exterior of the partition plate 3, providing space for the meshing of the bevel gear 5 and the bevel gear 10.
[0033] Reference Figures 2 to 4 As shown, electrical component 7 is fixedly connected inside the cabinet 1. Electrical component 7 is the core component of the ring main unit. The external parts of electrical component 7 and the external parts of the card block 8 are electrically connected. The card block 8 can cooperate with the connecting block 14 to realize the on / off control of the circuit. The internal parts of the partition plate 3 are fixedly connected to the card block 8. The position of the card block 8 is reasonably designed so that it can accurately cooperate with the connecting block 14. The internal parts of the partition plate 3 are rotatably connected to the rotating rod 9. The rotating rod 9 is a component for transmitting power. The external parts of the rotating rod 9 are fixedly connected to the bevel gear 10. The bevel gear 10 can mesh with the bevel gear 5 for transmission. The external parts of the bevel gear 10 are fixedly connected to multiple elliptical blocks 11. The elliptical blocks 11 can push the arc block 12 to move during rotation. The external parts of the elliptical blocks 11 are rotatably connected inside the partition plate 3 to ensure the stable movement of the elliptical blocks 11.
[0034] The external bevel gear 10 is rotatably connected to the inside of the partition plate 3 to ensure the stable movement of the bevel gear 10. The external elliptical block 11 is rotatably connected to the arc block 12, which can move under the push of the elliptical block 11. Multiple support blocks 13 are fixedly connected inside the partition plate 3. The support blocks 13 can provide support for the connecting block 14 and ensure the stable movement of the connecting block 14. The internal arc block 12 is rotatably connected to the connecting block 14, which can cooperate with the locking block 8 to realize the on / off control of the circuit. The bottom of the connecting block 14 is rotatably connected to the top of the support block 13 to ensure the stable movement of the connecting block 14. The external of the connecting block 14 is engaged with the internal of the locking block 8 to realize the connection control of the circuit.
[0035] Reference Figure 2 and Figure 5 , Figure 6As shown, the cabinet 1 has a cable management compartment 15 inside, which serves as a space for organizing and arranging cables. Two fixing blocks 16 are fixedly connected inside the cable management compartment 15. The fixing blocks 16 are components for installing label assemblies and clamping cables. Label assemblies for identification are fixedly connected to the outside of the fixing blocks 16. The label assemblies include multiple label clips 17, which can mark different cables, allowing operators to quickly identify the cables. The multiple label clips 17 are arranged linearly outside the fixing blocks 16, ensuring neat label arrangement and easy viewing.
[0036] The fixed block 16 has two sliding grooves 18 inside, which provide a track for the sliding of the slider 26. The fixed block 16 has a limiting groove 19 outside, which provides space for the movement of the limiting block 21. A limiting rod 20 is fixedly connected inside the limiting groove 19, which serves as a sliding track for the limiting block 21. The limiting block 21 is slidably connected to the outside of the limiting rod 20 to ensure the stability of the movement of the limiting block 21. The limiting block 21 is slidably connected to the inside of the fixed block 16 and the limiting groove 19 to ensure the stability of the movement of the limiting block 21.
[0037] A spring 22 is fitted around the outside of the limiting block 21. The spring 22 provides elastic restoring force to the mounting block 24. One side of the spring 22 is fixedly connected to the inside of the limiting groove 19 to ensure that the spring 22 is securely installed. The other side of the spring 22 is fixedly connected to the outside of the limiting block 21, so that the spring 22 can effectively act on the limiting block 21. A connecting rod 23 is rotatably connected to the outside of the limiting block 21, and the connecting rod 23 can connect the limiting block 21 and the mounting block 24.
[0038] The front sides of the two connecting rods 23 are rotatably connected to the mounting block 24. The mounting block 24 serves as a component for connecting the first clamping plate 25. The first clamping plate 25 is fixedly connected to the outside of the mounting block 24. The first clamping plate 25 can cooperate with the second clamping plate 27 to clamp the line. The first clamping plate 25 is fixedly connected to the outside of the two sliders 26. The sliders 26 can slide in the slide groove 18. The second clamping plate 27 is fixedly connected to the inside of the fixing block 16. The second clamping plate 27 can cooperate with the first clamping plate 25 to clamp the line.
[0039] Working Principle: In the ring main unit, the partition plate 3 in cabinet 1 divides the internal space of cabinet 1, improving the rationality of the internal layout. When opening and closing the rotating door 2, the locking operation must be completed first. Rotating the handle 4 causes the handle 4 to drive the bevel gear 5 to rotate. The bevel gear 5 meshes with the bevel gear 10 on the rotating rod 9 inside cabinet 1 through the through hole 6 on cabinet 1. When the rotating rod 9 rotates, it drives the elliptical block 11 to rotate. During its rotation, the elliptical block 11 pushes the arc block 12 to move. The arc block 12 pulls the connecting block 14, causing the connecting block 14 to disengage from the locking block 8, thus disconnecting the locking block 8 from the electrical component 7. This achieves the function of shutting down and disconnecting the ring main unit circuit, ensuring a quick and safe circuit cutoff in case of maintenance or emergency.
[0040] Inside cabinet 1, the cable management compartment 15 is specifically designed for organizing and arranging cables. Label clips 17 mounted on the fixing block 16 can mark different cables, allowing operators to quickly identify the purpose and connection status of each cable, facilitating management and maintenance. Cables are placed between clamping plates 25 and 27, and the slider 26 slides within the groove 18, causing clamping plate 27 to move closer to clamping plate 25, thus clamping the cable. A limiting block 21 moves within a limiting groove 19, restricting the movement range of the slider 26 and ensuring appropriate clamping force—neither too loose, causing cable loosening, nor too tight, damaging the cable. Spring 22, via connecting rod 23, pushes the mounting block 24, causing it to move clamping plate 25 in conjunction with clamping plate 27 to classify and organize the cables, keeping them neat and orderly, preventing tangled cables, and facilitating quick and accurate location of target cables during maintenance and repair, improving work efficiency and safety.
[0041] 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 locking mechanism for a ring main unit and the ring main unit, comprising a cabinet (1), characterized in that: A rotating door (2) is rotatably connected to the front of the cabinet (1). A partition plate (3) is fixedly connected inside the cabinet (1). A rotating handle (4) is rotatably connected inside the rotating door (2). A bevel gear (5) is fixedly connected to the rear of the rotating handle (4). A through hole (6) is provided on the outside of the partition plate (3). An electrical component (7) is fixedly connected inside the cabinet (1). A locking block (8) is fixedly connected inside the partition plate (3). A rotating rod (9) is rotatably connected inside the partition plate (3). The rotating rod (9) is fixedly connected to the outside of the partition plate (9). A bevel gear (10) is connected to the outside of the bevel gear (10), and an arc block (12) is rotatably connected to the outside of the elliptical block (11). A plurality of support blocks (13) are fixedly connected to the inside of the partition plate (3), and a connecting block (14) is rotatably connected to the inside of the arc block (12). A cable tray (15) is provided inside the cabinet (1), and two fixing blocks (16) are fixedly connected inside the cable tray (15). A label assembly for identification is fixedly connected to the outside of the fixing blocks (16).
2. The locking mechanism and ring main unit of a ring main unit according to claim 1, characterized in that: The label assembly includes a plurality of label clips (17), the label clips (17) being fixedly connected to the outside of the fixing block (16), and the plurality of label clips (17) being arranged linearly outside the fixing block (16).
3. The locking mechanism and ring main unit of a ring main unit according to claim 1, characterized in that: The fixed block (16) has two sliding grooves (18) inside and a limiting groove (19) outside. A limiting rod (20) is fixedly connected inside the limiting groove (19). A limiting block (21) is slidably connected outside the limiting rod (20). A spring (22) is sleeved on the outside of the limiting block (21). A connecting rod (23) is rotatably connected outside the limiting block (21). An installation block (24) is rotatably connected to the front side of the two connecting rods (23). A clamping plate (25) is fixedly connected outside the installation block (24). Two sliders (26) are fixedly connected outside the clamping plate (25). A clamping plate (27) is fixedly connected inside the fixed block (16).
4. The locking mechanism and ring main unit of a ring main unit according to claim 1, characterized in that: The outer side of the elliptical block (11) is rotatably connected to the inside of the partition plate (3), and the outer side of the bevel gear (10) is rotatably connected to the inside of the partition plate (3).
5. The locking mechanism and ring main unit of a ring main unit according to claim 1, characterized in that: The exterior of the electrical component (7) and the exterior of the card block (8) are electrically connected, and the exterior of the first bevel gear (5) and the exterior of the second bevel gear (10) are meshed.
6. The locking mechanism and ring main unit of a ring main unit according to claim 1, characterized in that: The bottom of the connecting block (14) is rotatably connected to the top of the support block (13), and the outside of the connecting block (14) engages with the inside of the locking block (8).
7. The locking mechanism and ring main unit of a ring main unit according to claim 3, characterized in that: One side of the spring (22) is fixedly connected to the inside of the limiting groove (19), and the other side of the spring (22) is fixedly connected to the outside of the limiting block (21).
8. The locking mechanism and ring main unit of a ring main unit according to claim 3, characterized in that: The limiting block (21) is externally slidably connected to the inside of the fixed block (16), and the limiting block (21) is externally slidably connected to the inside of the limiting groove (19).