A compact ring main unit

Abstract

The utility model relates to a compact looped netowrk cabinet, and aims to provide a compact looped netowrk cabinet. The utility model adopts the technical scheme: including looped netowrk cabinet frame and middle connecting support, the looped netowrk cabinet frame includes looped netowrk cabinet middle sole, looped netowrk cabinet main longitudinal beam, first side beam and second side beam, the middle connecting support includes support middle sole plate, the support middle sole plate left end vertical bending forms support first butt joint part, the support middle sole plate front and back end all vertical bending forms support connecting part, the support first butt joint part and two the support connecting part between form the support main positioning mouth for the looped netowrk cabinet main longitudinal beam inserts. The utility model has the advantages of: the middle connecting support is connected with the looped netowrk cabinet middle sole, looped netowrk cabinet main longitudinal beam, first side beam and second side beam simultaneously, reduces the component, the structure is more compact and the connecting structure integration, promotes integral rigidity and the linkage, strengthens the torsional resistance and the compression resistance.

Description

Technical Field

[0001] This utility model relates to a compact ring main unit. Background Technology

[0002] Compact ring main units (RMUs) are the core units of ring main power supply systems, used for power system control, protection, and measurement. Their high integration reduces size, making them suitable for space-constrained environments. A compact RMU includes a frame, typically composed of multiple profiles. To strengthen connections and improve cabinet strength, connecting brackets are often used between these profiles. Existing compact RMUs typically include a horizontally positioned bottom beam, a vertically positioned main longitudinal beam at the end of the bottom beam, and horizontally positioned first and second side beams abutting the bottom of the main longitudinal beam. Traditionally, the main longitudinal beam is connected to the bottom beam, first side beam, and second side beam via connecting brackets. This prevents the beams from being fully integrated, resulting in poor interoperability, low overall cabinet rigidity, uneven stress distribution, and weak torsional and compressive resistance. Furthermore, the need for multiple connecting brackets leads to numerous components, cumbersome assembly, and low on-site installation efficiency. Therefore, improvements and optimizations are proposed to address these issues. Utility Model Content

[0003] To address the above problems, the technical problem to be solved by this utility model is to provide a compact ring main unit.

[0004] The technical solution adopted by this compact ring main unit is as follows: It includes a ring main unit frame and a central support bracket. The ring main unit frame includes a horizontally arranged bottom beam, a main longitudinal beam vertically arranged at the end of the bottom beam, and a first and second side beam arranged horizontally and longitudinally, respectively abutting the front and rear sides of the bottom of the main longitudinal beam. The central support bracket includes a base plate. The left end of the base plate is vertically bent to form a first connecting portion. Both the front and rear ends of the base plate are vertically bent to form connecting portions. A main positioning opening for inserting the main longitudinal beam is formed between the first connecting portion and the two connecting portions. The side ends of the connecting portions are vertically bent outwards to form a support passage. The transition section of the bracket has a bottom end that is vertically bent to form a second connecting part of the bracket. The bottom beam of the ring main unit, the main longitudinal beam of the ring main unit, the first side beam, and the second side beam all include a main beam support part. The two ends of the main beam support part are bent vertically inward in sequence to form a beam side part and a beam inner reinforcement part. The bottom plate of the bracket is fixed to the beam inner reinforcement part of the bottom beam of the ring main unit. The first connecting part of the bracket is fixed to the beam inner reinforcement part of the main longitudinal beam of the ring main unit. The connecting part of the bracket is fixed to the beam side part of the main longitudinal beam of the ring main unit. The two second connecting parts of the bracket are respectively fixed to the beam side parts of the first side beam and the beam side parts of the second side beam.

[0005] The second docking part of the bracket is bent vertically at its end to form a bracket wrapping part, and the inner end of the bracket wrapping part is bent vertically outward to form a bracket reinforcement part. The bracket reinforcement part and the bracket connecting part are connected by screws.

[0006] The two brackets are respectively fixed to the inner reinforcement of the first side beam and the inner reinforcement of the second side beam.

[0007] The central support bracket is formed by bending in one piece.

[0008] The intermediate support bracket is made of aluminum-zinc coated material.

[0009] The advantages of this compact ring main unit are as follows: the central support bracket connects simultaneously to the bottom beam, main longitudinal beam, first side beam, and second side beam of the ring main unit, reducing the number of parts, making the structure more compact and the connection structure integrated, improving the overall rigidity and linkage, and enhancing the torsional and compressive resistance; the integral bending and forming and the closed-loop structure at both ends of the central support bracket make the overall structure more stable and robust, and extend its service life. Attached Figure Description

[0010] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0011] Figure 1 This is a left view of the compact ring main unit of this utility model;

[0012] Figure 2 This is a schematic diagram showing the connection between the ring main unit frame and the intermediate support of this utility model;

[0013] Figure 3 This is a schematic diagram of the structure of the intermediate support bracket of this utility model;

[0014] Figure 4 This is a structural schematic diagram of the main longitudinal beam type of this utility model ring main unit. Detailed Implementation

[0015] like Figure 1-4As shown, the compact ring main unit of this utility model includes a ring main unit frame and a central support bracket 5. The ring main unit frame includes a horizontally arranged bottom beam 1, a main longitudinal beam 4 vertically arranged at the end of the bottom beam 1, and a first side beam 2 and a second side beam 3 horizontally arranged and respectively abutting the bottom front and rear sides of the main longitudinal beam 4. The central support bracket 5 includes a central base plate 7. The left end of the central base plate 7 is vertically bent to form a first connecting part 8. The front and rear ends of the central base plate 7 are both vertically bent to form connecting parts 9. A main positioning port 15 for inserting the main longitudinal beam 4 is formed between the first connecting part 8 and the two connecting parts 9. The side ends of the connecting parts 9 are vertically bent outward to form a transition part 10. The bottom end of the transition part 10 is vertically bent to form a second connecting part 11. The bottom beam 1, the main longitudinal beam 4 ... The main longitudinal beam 4, the first side beam 2, and the second side beam 3 of the ring main cabinet all include a main beam support portion 16. The two ends of the main beam support portion 16 are bent vertically inward in sequence to form a beam side portion 17 and a beam inner reinforcement portion 18. The bottom plate 7 of the bracket is fixed to the beam inner reinforcement portion 18 of the bottom beam 1 of the ring main cabinet. The first connecting portion 8 of the bracket is fixed to the beam inner reinforcement portion 18 of the main longitudinal beam 4 of the ring main cabinet. The connecting portion 9 of the bracket is fixed to the beam side portion 17 of the main longitudinal beam 4 of the ring main cabinet. The two second connecting portions 11 of the bracket are respectively fixed to the beam side portion 17 of the first side beam 2 and the beam side portion 17 of the second side beam 3. The middle connecting bracket 5 is simultaneously connected to the bottom beam 1 of the ring main cabinet, the main longitudinal beam 4 of the ring main cabinet, the first side beam 2, and the second side beam 3, reducing the number of parts, making the structure more compact and the connection structure integrated, improving the overall rigidity and linkage, and enhancing the torsional and compressive resistance.

[0016] The end of the second docking part 11 of the bracket is bent vertically to form the bracket wrapping part 12, and the inner end of the bracket wrapping part 12 is bent vertically outward to form the bracket reinforcement part 13. The bracket reinforcement part 13 is connected to the bracket connecting part 9 by screws.

[0017] The two bracket wrapping parts 12 are respectively fixed to the beam inner reinforcement part 18 of the first side beam 2 and the beam inner reinforcement part 18 of the second side beam 3. The two ends of the middle bracket form a closed loop structure with the middle bracket body through the bracket wrapping parts 12, making the overall structure more stable and solid and the service life longer.

[0018] The central support bracket 5 is integrally bent and formed, replacing multiple traditional connecting brackets. Its highly integrated structure reduces assembly steps and simplifies the production process. Installation only requires positioning and fixing, shortening the assembly cycle.

[0019] The intermediate bracket 5 is made of aluminum-zinc coated material, which reduces material costs while being corrosion resistant and achieving an environmentally friendly effect.

[0020] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model are included within the protection scope of the present utility model.

Claims

1. A compact ring main unit, comprising a ring main unit frame and a central support bracket (5), wherein the ring main unit frame comprises a horizontally arranged bottom beam (1), a main longitudinal beam (4) vertically arranged at the end of the bottom beam (1), and a first side beam (2) and a second side beam (3) arranged horizontally and longitudinally and respectively abutting the bottom front and rear sides of the main longitudinal beam (4), characterized in that: The intermediate support bracket (5) includes a bracket base plate (7). The left end of the bracket base plate (7) is vertically bent to form a first bracket docking part (8). The front and rear ends of the bracket base plate (7) are both vertically bent to form bracket connecting parts (9). A bracket main positioning port (15) for inserting the main longitudinal beam (4) of the ring main cabinet is formed between the first bracket docking part (8) and the two bracket connecting parts (9). The side end of the bracket connecting part (9) is vertically bent outward to form a bracket transition part (10). The bottom end of the bracket transition part (10) is vertically bent to form a bracket second docking part (11). The ring main cabinet base beam (1), the ring main longitudinal beam (4), the first side beam (2), and the second side beam (2) are connected. The beam (3) includes a main beam support part (16). The two ends of the main beam support part (16) are bent vertically inward to form a beam side part (17) and a beam inner reinforcement part (18). The bottom plate (7) of the bracket is fixed on the beam inner reinforcement part (18) of the bottom beam (1) of the ring network cabinet. The first docking part (8) of the bracket is fixed on the beam inner reinforcement part (18) of the main longitudinal beam (4) of the ring network cabinet. The bracket connecting part (9) is fixed on the beam side part (17) of the main longitudinal beam (4) of the ring network cabinet. The two second docking parts (11) of the bracket are respectively fixed on the beam side part (17) of the first side beam (2) and the beam side part (17) of the second side beam (3).

2. The compact ring main unit according to claim 1, characterized in that: The end of the second docking part (11) of the bracket is bent vertically to form the bracket wrapping part (12), and the inner end of the bracket wrapping part (12) is bent vertically outward to form the bracket reinforcement part (13). The bracket reinforcement part (13) and the bracket connecting part (9) are connected by screws.

3. The compact ring main unit according to claim 2, characterized in that: The two bracket wrapping parts (12) are respectively fixed to the beam inner reinforcement part (18) of the first side beam (2) and the beam inner reinforcement part (18) of the second side beam (3).

4. The compact ring main unit according to claim 1, characterized in that: The intermediate support bracket (5) is integrally bent and formed.

5. The compact ring main unit according to claim 1, characterized in that: The intermediate bracket (5) is made of aluminum-zinc coated material.

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