High-voltage ring main unit with quick dismounting and mounting
By introducing a combination structure of L-shaped plugs, cylindrical tubes and locking columns into the high-voltage ring main unit, the problems of inconvenient operation and safety hazards in the existing technology are solved, and convenient disassembly and assembly and efficient splicing of the ring main unit are realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI GUOFENG ELECTRIC CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-06-19
AI Technical Summary
Existing high-voltage ring main units have low operational freedom and pose safety hazards during disassembly and assembly, especially when operating under power.
The ring main unit adopts a combination structure of L-shaped plug rod, cylindrical tube and locking column, and is conveniently assembled and disassembled by splicing and locking on the outside.
It improves the freedom and safety of disassembly and assembly of ring main units, simplifies the splicing process of multiple high-voltage ring main units, and improves work efficiency.
Smart Images

Figure CN224384849U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of high-voltage ring main unit technology, specifically a high-voltage ring main unit that can be quickly disassembled and assembled. Background Technology
[0002] High-voltage ring main units are designed to improve power supply reliability, allowing users to obtain power from two directions. They typically connect the power supply network into a ring shape.
[0003] A search revealed that the existing technology, specifically the authorized patent with publication number CN222463852U, discloses a quick-assembly and disassembly high-voltage ring main unit. This unit includes a high-voltage ring main unit cabinet, a door hinged to one end of the cabinet, a handle at one end of the door, a height adjustment component at the bottom of the cabinet, symmetrically placed insertion holes on the left side of the cabinet, and symmetrically placed fixing mechanisms for quick assembly and disassembly on the right side of the cabinet. These fixing mechanisms and insertion holes work together. By symmetrically placing the fixing mechanisms on the right side of the cabinet and the insertion holes on the left side, these mechanisms can be used together during installation, enabling quick assembly and disassembly of multiple high-voltage ring main units in series. This convenient assembly and disassembly also saves space in smaller installation areas, increasing the space utilization rate of the operating environment.
[0004] However, the above technical solutions still have the following shortcomings in use: the ring main unit in the above device is assembled and installed through an internal fixing mechanism, and the ring main unit generally has a relatively dense number of electrical components installed inside, which makes the freedom of operation during disassembly and assembly low, inconvenient to operate, and poses a safety hazard if operated while energized. To address these issues, we propose a high-voltage ring main unit that allows for quick disassembly and assembly. Utility Model Content
[0005] The purpose of this utility model is to provide a high-voltage ring main unit that can be quickly disassembled and assembled, so as to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-voltage ring main unit that is quick to assemble and disassemble, comprising:
[0007] The ring main unit has a cabinet door installed on its front side wall. Two L-shaped plugs are fixedly welded to the top wall of one side of the ring main unit. Limiting holes are provided on the L-shaped plugs. A cylindrical tube is provided at the end of the ring main unit away from the L-shaped plugs. Two L-shaped mounting rods are fixedly welded to the outer wall of the cylindrical tube. The L-shaped mounting rods are fixedly welded to the top wall of the ring main unit. Two slots are provided on the cylindrical tube. The slots are adapted to the L-shaped plugs. A locking post is threaded to the front end of the cylindrical tube. A limiting rod is fixedly welded to the center of the inner wall of the locking post. The limiting rod is adapted to the limiting hole.
[0008] Preferably, two plug-in sleeves are fixedly welded to one side of the bottom wall of the ring main unit, and two L-shaped plug-in posts are fixedly welded to the bottom wall of the ring main unit away from the plug-in sleeves, and the L-shaped plug-in posts are adapted to the plug-in sleeves.
[0009] Preferably, multiple casters are fixedly installed on the bottom wall of the ring main unit.
[0010] Preferably, a knob is fixedly installed on the outer end of the locking pin.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] In use, when two ring main unit cabinets are spliced together, the outer walls of the two cabinets can be brought together, allowing the L-shaped plug of one cabinet to be inserted into the plug sleeve of the other cabinet. Two L-shaped rods from one cabinet are then inserted into two slots in the cylindrical section of the other cabinet. The locking pin is then screwed onto the front end of the cylindrical section using a knob, allowing the limiting rod to be inserted into the limiting holes of the two L-shaped rods to fix them in place. This locks the two cabinets together, enabling convenient series connection and disassembly of multiple high-voltage ring main units. Furthermore, the L-shaped rods, cylindrical section, and locking pin used for locking the ring main units are all located on the outside of the cabinets, increasing the freedom of operation during assembly and disassembly. This makes the assembly and disassembly of multiple high-voltage ring main units simpler and more convenient, improving the efficiency of splicing multiple high-voltage ring main units. Attached Figure Description
[0013] Figure 1 A three-dimensional structural diagram of a high-voltage ring main unit that can be quickly assembled and disassembled according to this utility model;
[0014] Figure 2 This is a three-dimensional structural diagram of the ring main unit in a high-voltage ring main unit that can be quickly disassembled and assembled according to this utility model.
[0015] Figure 3This utility model presents a three-dimensional structural diagram showing the separation of the circular cylinder and locking column in a high-voltage ring main unit that allows for quick assembly and disassembly.
[0016] In the diagram: 1. Ring main unit cabinet; 2. Cabinet door; 3. L-shaped plug rod; 4. Limiting hole; 5. Circular cylinder; 6. L-shaped mounting rod; 7. Slot; 8. Locking post; 9. Limiting rod; 10. Knob; 11. Plug sleeve; 12. L-shaped plug post; 13. Casters. Detailed Implementation
[0017] 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.
[0018] Please see Figure 1-3 This utility model provides a technical solution: a high-voltage ring main unit that can be quickly disassembled and assembled, comprising:
[0019] The ring main unit 1 has a cabinet door 2 installed on its front side wall. Two L-shaped plug rods 3 are fixedly welded to one side top wall of the ring main unit 1. Limiting holes 4 are provided on the L-shaped plug rods 3. A circular cylinder 5 is provided at the end of the ring main unit 1 away from the L-shaped plug rods 3. Two L-shaped mounting rods 6 are fixedly welded to the outer wall of the circular cylinder 5. The L-shaped mounting rods 6 are fixedly welded to the top wall of the ring main unit 1. Two slots 7 are provided on the circular cylinder 5. The slots 7 are adapted to the L-shaped plug rods 3. A locking post 8 is threaded to the front end of the circular cylinder 5. A limiting rod 9 is fixedly welded to the center of the inner wall of the locking post 8. The limiting rod 9 is adapted to the limiting hole 4.
[0020] Two plug-in sleeves 11 are fixedly welded to one side of the bottom wall of the ring main unit 1, and two L-shaped plug-in posts 12 are fixedly welded to the bottom wall of the ring main unit 1 away from the plug-in sleeves 11. The L-shaped plug-in posts 12 are adapted to the plug-in sleeves 11. When two ring main units 1 are spliced, the bottom ends of the two spliced ring main units 1 can be limited and fixed by the plug-in cooperation between the L-shaped plug-in posts 12 and the plug-in sleeves 11.
[0021] Multiple casters 13 are fixedly installed on the bottom wall of the ring main unit 1, which facilitates the movement of the ring main unit 1 during assembly.
[0022] A knob 10 is fixedly installed on the outer end of the locking pin 8, which can easily rotate the locking pin 8.
[0023] Working principle: During use, when two ring main unit cabinets 1 are spliced, the outer walls of the two ring main unit cabinets 1 can be fitted together, so that the L-shaped plug-in post 12 of one ring main unit cabinet 1 is inserted into the plug-in sleeve 11 of the other ring main unit cabinet 1, and the two L-shaped plug rods 3 of one ring main unit cabinet 1 are inserted into the two slots 7 of the circular cylinder 5 of the other ring main unit cabinet 1. Then, the locking post 8 is screwed onto the front end of the circular cylinder 5 by the knob 10. This allows the limiting rod 9 to be inserted into the limiting holes 4 of the two L-shaped plug rods 3 to limit and fix the L-shaped plug rods 3 and the circular cylinder 5, thereby locking and fixing the two ring main unit cabinets 1. This enables convenient series connection and disassembly of multiple high-voltage ring main units. Furthermore, the L-shaped plug rods 3, circular cylinder 5, and locking posts 8 used to lock and fix the ring main units are all located on the outside of the ring main units, which improves the degree of freedom of operation during disassembly and assembly, making the disassembly and assembly of multiple high-voltage ring main units simpler and more convenient, and improving the work efficiency of splicing multiple high-voltage ring main units.
[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A high-voltage ring main unit that can be quickly assembled and disassembled, characterized in that, include: The ring main unit (1) has a cabinet door (2) installed on the front side wall of the ring main unit (1). Two L-shaped plug rods (3) are fixedly welded on one side top wall of the ring main unit (1). Limiting holes (4) are opened on the L-shaped plug rods (3). A circular cylinder (5) is provided at the end of the ring main unit (1) away from the L-shaped plug rods (3). Two L-shaped mounting rods (6) are fixedly welded on the outer wall of the circular cylinder (5). The L-shaped mounting rods (6) are fixedly welded on the top wall of the ring main unit (1). Two slots (7) are opened on the circular cylinder (5). The slots (7) are adapted to the L-shaped plug rods (3). A locking post (8) is threaded to the front end of the circular cylinder (5). A limiting rod (9) is fixedly welded at the center of the inner wall of the locking post (8). The limiting rod (9) is adapted to the limiting hole (4).
2. The high-voltage ring main unit with quick assembly and disassembly according to claim 1, characterized in that: Two plug sleeves (11) are fixedly welded on one side of the bottom wall of the ring network cabinet (1), and two L-shaped plug posts (12) are fixedly welded on the bottom wall of the ring network cabinet (1) away from the plug sleeves (11). The L-shaped plug posts (12) are adapted to the plug sleeves (11).
3. The high-voltage ring main unit with quick assembly and disassembly according to claim 1, characterized in that: Multiple casters (13) are fixedly installed on the bottom wall of the ring main unit (1).
4. A high-voltage ring main unit with quick assembly and disassembly according to claim 1, characterized in that: A knob (10) is fixedly installed on the outer end of the locking pin (8).
Citation Information
Patent Citations
High-voltage ring main unit capable of being quickly assembled and disassembled
CN222463852U