Ring main unit convenient to install

The ring main unit is conveniently installed and efficiently cooled by a hydraulic push rod and a motor-driven rope system. This solves the problem of insufficient installation space for the ring main unit, improves installation efficiency, and ensures the normal operation of the equipment.

CN224082976UActive Publication Date: 2026-04-03BEIJING ZHONGKE ZHONGDIAN POWER ENG MANAGEMENT LTD
View PDF 1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-28
Publication Date
2026-04-03

AI Technical Summary

Technical Problem

Existing ring main units require a certain amount of installation space. If the on-site space is insufficient, it will prevent normal installation and affect subsequent operation and maintenance.

Method used

The cabinet is lifted and installed using a hydraulic push rod and pull rod system, combined with a motor-driven pull rope and U-shaped plate system to achieve heat dissipation and cleaning of the cabinet. The installation and maintenance process is optimized by utilizing the heat dissipation mechanism and tool storage structure.

Benefits of technology

It enables installation without the need for external tools, saving installation space and improving installation efficiency. Furthermore, its heat dissipation and cleaning functions ensure equipment performance and reduce the impact of dust accumulation on the equipment.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224082976U_ABST
    Figure CN224082976U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of ring main units, and discloses a ring main unit convenient to install, which comprises a base, a hydraulic push rod is fixedly connected to the top of the base, a plurality of double-section outer groove columns are fixedly connected to the top of the base at equal intervals, and a U-shaped frame is fixedly connected to the front side of the outer wall of each double-section outer groove column. The middle of the U-shaped frame is slidably connected with a pull rod, the outer wall of the pull rod is fixedly connected with a spring, the top of the double-section outer groove column is in threaded connection with a second screw, the outer wall of the second screw is in threaded connection with a fixed short plate, and the top of the fixed short plate is fixedly connected with a plurality of cabinet bodies at equal intervals. According to the utility model, the pull rod is rebounded by the spring to clamp and fix the groove column, and the installation can be carried out without the help of an external tool, so that the problems that the conventional ring main unit needs a certain installation space during the installation, the normal installation cannot be carried out if the field space is insufficient, and the later operation and maintenance are influenced are solved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of ring main unit technology, and in particular to a ring main unit that is easy to install. Background Technology

[0002] A ring main unit is a set of high-voltage switchgear for power transmission and distribution equipment. It is a combined electrical cabinet with assembled and intervalized ring network power supply units inside a metal and non-metal insulated cabinet. An easy-to-install ring main unit refers to a type of ring main unit that fully considers the convenience and efficiency of the installation process in its design and manufacturing. By adopting special structures, materials and design concepts, it simplifies the installation process, reduces installation difficulty, and reduces installation time and labor costs.

[0003] A search revealed Chinese Patent Publication No. CN114204443B, which discloses a power ring main unit that is easy to disassemble and install. This relates to the field of power ring main unit technology and solves the problem that power ring main units require assembly before transportation, leading to high transportation costs and large space requirements. The power ring main unit, designed for easy disassembly and installation, includes a movable door panel. An assembly frame is provided on the outer side of the movable door panel. The assembly frame includes eight corner connecting frames. Each corner connecting frame has insertion holes on three end faces. Flat connecting frames are provided at the ends and midway between the ends of the corner connecting frames and the flush corner connecting frames. This invention enables the rapid assembly of the entire power ring main unit by setting up surrounding baffles, a bottom plate, a top plate, an assembly frame, and a locking mechanism. The operation is simple and quick, effectively improving work efficiency. It is also convenient for overall disassembly, storage, and actual transportation. However, existing ring main units require a certain amount of installation space to facilitate the installation of other additional equipment. If the site space is insufficient, it will lead to the inability to install normally and affect the subsequent operation and maintenance, thus causing inconvenience to the installation of the ring main unit. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a ring main unit that is easy to install, aiming to improve the problem that existing ring main units require a certain amount of installation space during installation. If the on-site space is insufficient, it will lead to the inability to install normally and affect the subsequent operation and maintenance.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a ring main unit that is easy to install, comprising a base, a hydraulic push rod fixedly connected to the top of the base, multiple double-section external groove columns fixedly connected at equal intervals to the top of the base, a U-shaped frame fixedly connected to the front side of the outer wall of the double-section external groove columns, a pull rod slidably connected to the middle of the U-shaped frame, a spring fixedly connected to the outer wall of the pull rod, a screw two threadedly connected to the top of the double-section external groove columns, a fixing short plate threadedly connected to the outer wall of the screw two, multiple cabinets fixedly connected at equal intervals to the top of the fixing short plate, an inner sliding groove plate long plate fixedly connected to the left and right sides of the top of the base, a sliding block slidably connected inside the inner sliding groove plate long plate, the other end of the outer wall of the sliding block fixedly connected to the outer wall of the cabinet, and multiple heat dissipation mechanisms installed at equal intervals on the top of the base for dissipating heat from the inside of the cabinet.

[0006] The above technical solution involves using a hydraulic push rod to lift the fixed short plate, then pulling the pull rod to compress the spring, causing the spring to contract and separating the pull rod from the groove on the outer wall of the double-section outer groove column. As the fixed short plate rises, it drives the top cabinet to rise synchronously. Because of the sliding block inside the inner sliding plate, and because the other end of the sliding block's outer wall is fixedly connected to the outer wall of the cabinet, the inner sliding plate on both sides can limit the distance and direction of the cabinet's movement during the cabinet's rise. Once the desired height is reached, the pull rod is released, the spring returns to its elasticity, and the pull rod pops out and engages with the groove on the outer wall of the double-section outer groove column, completing the installation without the need for any external tools.

[0007] As a further description of the above technical solution:

[0008] The heat dissipation mechanism includes a motor, which is equidistantly mounted on the top of the base. A fixed short column is fixedly connected to the output end of the motor. Multiple pull ropes are equidistantly fixed to the outer wall of the fixed short column. Multiple sliding plates are equidistantly fixed to the inner bottom wall of the cabinet. A U-shaped plate is slidably connected to the outer wall of the sliding plate. Multiple batteries are fixedly connected to the middle of the outer wall of the U-shaped plate. Multiple fans are equidistantly fixed to the outer wall of the U-shaped plate. The other end of the outer wall of the pull rope is fixedly connected to the top of the U-shaped plate. Brushes are fixedly connected to all four sides of the outer wall of the U-shaped plate. Multiple sliding plates are equidistantly fixed to the inner wall of the base. The interior of the sliding plates is slidably connected to the outer wall of the pull rope.

[0009] The above technical solution involves: activating a motor to rotate a fixed short column at the output end. During rotation, multiple pull ropes are equidistantly connected to the outer wall, causing them to retract or extend. The other end of the pull rope is fixedly connected to the top of the U-shaped plate, and slides within a second sliding groove on the inner wall of the base. This second sliding groove guides and limits the movement of the pull rope, ensuring its stability. As the pull rope winds, the U-shaped plate slides on a first sliding groove on the bottom wall of the cabinet. Because the U-shaped plate and the first sliding groove are slidably connected, the tension of the pull rope causes the U-shaped plate to slide up and down on the first sliding groove. The fan on the outer wall of the U-shaped plate accelerates the airflow inside the cabinet, thereby dissipating heat from the electrical equipment inside.

[0010] As a further description of the above technical solution:

[0011] A screw is threadedly connected to the front side of the outer wall of the inner sliding plate on the right, and a hook is threadedly connected to the outer wall of the screw.

[0012] The above technical solution allows hooks to facilitate the hanging of tools used and cleaned daily by staff.

[0013] As a further description of the above technical solution:

[0014] The outer wall of the inner sliding plate on the left side is threaded with screw three, and the outer wall of screw three is threaded with a warning sign.

[0015] Through the above technical solution, the warning signs can remind staff of precautions when using the equipment, thereby reducing the probability of accidents.

[0016] As a further description of the above technical solution:

[0017] A hollow box is fixedly connected to the top right side of the base, and a drawer is slidably connected inside the hollow box.

[0018] The above technical solution allows for the convenient storage of tools used daily and for maintenance, facilitating their future use.

[0019] As a further description of the above technical solution:

[0020] A handle is fixedly connected to the front side of the outer wall of the drawer, and an anti-slip sleeve is fixedly connected to the outer wall of the handle.

[0021] The above technical solution enables staff to easily open and close the drawers for use.

[0022] As a further description of the above technical solution:

[0023] A hinge is fixedly connected to the front side of the outer wall of the cabinet, and an observation window is rotatably connected to the other side of the outer wall of the hinge.

[0024] The above technical solution allows the observation window panel to be sealed, preventing impurities from entering the ring main unit and causing pollution.

[0025] As a further description of the above technical solution:

[0026] Multiple handles are fixedly connected at equal intervals on the front side of the outer wall of the cabinet, and anti-slip sleeves are fixedly connected to the outer wall of each handle.

[0027] Through the above technical solution, handle two can facilitate the opening of cabinet doors by staff.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, a hydraulic push rod pushes the short plate upward, pulling the pull rod to compress the spring and cause it to contract, thus separating it from the groove of the grooved column. The rise of the short plate drives the cabinet to rise synchronously. The inner sliding plate and sliding block restrict the movement of the cabinet. After reaching the required height, the pull rod is released, and the spring returns the pull rod to lock and fix the grooved column. This achieves installation without the need for external tools, thus avoiding the problem that existing ring main units require a certain amount of installation space to facilitate the installation of other additional equipment. If the site space is insufficient, it will lead to the inability to install normally and affect the subsequent operation and maintenance, thus causing inconvenience to the installation of the ring main unit.

[0030] 2. In this utility model, a fixed short column is rotated by a motor. The short column is retracted and extended by a connected pull rope. The pull rope is connected to the top of the U-shaped plate and slides within the second slide plate of the base. It is guided and limited by the second slide plate. The U-shaped plate slides on the first slide plate and moves up and down under the influence of the pull rope. The fan on the U-shaped plate promotes airflow inside the cabinet to help dissipate heat. At the same time, the brush cleans the surface of the internal components of the cabinet during sliding, which can remove dust and impurities from the surface of the components and prevent dust accumulation from affecting the performance and heat dissipation effect of the equipment. Attached Figure Description

[0031] Figure 1 This is a perspective view of a ring main unit that is easy to install according to this utility model;

[0032] Figure 2 This is a side view of a ring main unit that is easy to install according to this utility model;

[0033] Figure 3 This is a rear view of a ring main unit that is easy to install according to this utility model;

[0034] Figure 4This is a partial structural diagram illustrating a ring main unit that is easy to install, as proposed in this utility model.

[0035] Figure 5 This is a schematic diagram of a heat dissipation mechanism for a ring main unit that is easy to install, as proposed in this utility model.

[0036] Legend:

[0037] 1. Base; 2. Heat dissipation mechanism; 201. Motor; 202. Battery; 203. Fan; 204. Slide rail one; 205. U-shaped plate; 206. Brush; 207. Pull rope; 208. Slide rail two; 209. Fixed short column; 3. Anti-slip sleeve one; 4. Handle one; 5. Drawer box; 6. Hollow box; 7. Screw one; 8. Hook; 9. Observation window panel; 10. Hinge; 11. Sliding block; 12. Inner slide rail long plate; 13. Handle two; 14. Anti-slip sleeve two; 15. Cabinet body; 16. Screw two; 17. Spring; 18. Pull rod; 19. U-shaped frame; 20. Double-section external groove column; 21. Fixed short plate; 22. Warning sign; 23. Screw three; 24. Hydraulic push rod. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0039] Reference Figure 1 , Figure 2 and Figure 4This utility model provides an embodiment of a ring main unit that is easy to install, including a base 1. A hydraulic push rod 24 is fixedly connected to the top of the base 1. Multiple double-section external grooved columns 20 are fixedly connected to the top of the base 1 at equal intervals. A U-shaped frame 19 is fixedly connected to the front side of the outer wall of the double-section external grooved column 20. A pull rod 18 is slidably connected to the middle of the U-shaped frame 19. The U-shaped frame 19 serves to fix the pull rod 18, and the pull rod 18 serves to slide and fix. A spring 17 is fixedly connected to the outer wall of the pull rod 18. A screw 16 is threadedly connected to the top of the double-section external grooved column 20. A fixing short plate 21 is threadedly connected to the outer wall of the screw 16. Multiple cabinets 15 are fixedly connected to the top of the fixing short plate 21 at equal intervals. An inner sliding groove plate long plate 12 is fixedly connected to the left and right sides of the top of the base 1. The inner sliding connection has a sliding block 11. The sliding block 11 inside the inner sliding plate 12 can limit the movement distance and direction of the cabinet 15. The other end of the outer wall of the sliding block 11 is fixedly connected to the outer wall of the cabinet 15. Multiple heat dissipation mechanisms 2 are installed at equal intervals on the top of the base 1. The heat dissipation mechanism 2 is used to dissipate heat from the inside of the cabinet 15. The front side of the outer wall of the right inner sliding plate 12 is threaded with a screw 7. The outer wall of the screw 7 is threaded with a hook 8. The hook 8 can facilitate the staff to hang tools for daily use and cleaning. The left side of the outer wall of the left inner sliding plate 12 is threaded with a screw 23. The outer wall of the screw 23 is threaded with a warning sign 22. The warning sign 22 can remind the staff of the precautions when using the equipment to reduce the probability of accidents.

[0040] Specifically, by turning on the motor 201, the fixed short column 209 at the output end is rotated. During the rotation of the fixed short column 209, multiple pull ropes 207 are fixedly connected at equal intervals on the outer wall, causing the pull ropes 207 to retract or extend. The other end of the outer wall of the pull rope 207 is fixedly connected to the top of the U-shaped plate 205, and the pull rope 207 slides inside the slide plate 208 on the inner wall of the base 1. The slide plate 208 guides and limits the pull rope 207, ensuring the stability of the pull rope 207's movement. As the pull rope 207 rolls, the U-shaped plate 205 slides on the slide plate 204 on the inner bottom wall of the cabinet 15. Because the U-shaped plate 205 and the slide plate 204 are slidably connected, the tension of the pull rope 207 causes the U-shaped plate 205 to slide on the slide plate 204. The U-shaped plate 205 slides up and down, and the fan 203 on the outer wall of the U-shaped plate 205 can accelerate the airflow inside the cabinet 15, thereby achieving heat dissipation for the electrical equipment inside the cabinet 15. The brush 206 can clean the surface of the components inside the cabinet 15 during the sliding process, and can remove dust and impurities from the surface of the components. The front side of the outer wall of the right inner slide plate 12 is threaded with screw 7, and the outer wall of screw 7 is threaded with hook 8. The hook 8 can facilitate the staff to hang tools for daily use and cleaning. The left side of the outer wall of the left inner slide plate 12 is threaded with screw 3 23, and the outer wall of screw 3 23 is threaded with warning sign 22. The warning sign 22 can remind the staff of the precautions when using the equipment, so as to reduce the probability of accidents.

[0041] Reference Figure 1 , Figure 3 and Figure 5The heat dissipation mechanism 2 includes a motor 201, which is equidistantly mounted on the top of the base 1. A fixed short column 209 is fixedly connected to the output end of the motor 201. Multiple pull ropes 207 are equidistantly fixed to the outer wall of the fixed short column 209. Turning on the motor 201 causes the fixed short column 209 to rotate, which in turn causes the multiple pull ropes 207 on the outer wall to rotate and retract. Multiple sliding plates 204 are equidistantly fixed to the inner bottom wall of the cabinet 15. A U-shaped plate 205 is slidably connected to an adjacent side of the outer wall of the sliding plate 204. Multiple batteries 202 are fixedly connected to the middle of the outer wall of the U-shaped plate 205. Multiple fans 203 are equidistantly fixed to an adjacent side of the outer wall of the U-shaped plate 205. The other end of the outer wall of the pull rope 207 is fixedly connected to the top of the U-shaped plate 205. Brushes 206 are fixedly connected to all four sides of the outer wall of the U-shaped plate 205. The brushes 206 play a brushing and cleaning role. Multiple sliding plates 208 are fixedly connected at equal intervals to the inner wall of the base 1. The interior of the sliding plates 208 is slidably connected to the outer wall of the pull rope 207. A hollow box 6 is fixedly connected to the top right side of the base 1. A drawer 5 is slidably connected inside the hollow box 6. The drawer 5 can conveniently store tools for daily use and maintenance for subsequent use. A handle 4 is fixedly connected to the front side of the outer wall of the drawer 5. The handle 4 can facilitate the staff to open and close the drawer 5 for use. An anti-slip sleeve 3 is fixedly connected to the outer wall of the handle 4.

[0042] Specifically, by turning on the motor 201, the fixed short column 209 at the output end is rotated. During rotation, multiple pull ropes 207 are equidistantly fixed to the outer wall, causing them to retract or extend. The other end of the pull rope 207 is fixedly connected to the top of the U-shaped plate 205, and slides within the second slide plate 208 on the inner wall of the base 1. The second slide plate 208 guides and limits the movement of the pull rope 207, ensuring its stability. As the pull rope 207 rolls, the U-shaped plate 205 slides on the first slide plate 204 on the inner bottom wall of the cabinet 15. Because the U-shaped plate 205 and the first slide plate 204 are slidably connected, the tension of the pull rope 207 causes... The U-shaped plate 205 slides up and down on the slide plate 204. The fan 203 on the outer wall of the U-shaped plate 205 can accelerate the airflow inside the cabinet 15, thereby achieving heat dissipation for the electrical equipment inside the cabinet 15. The brush 206 can clean the surface of the components inside the cabinet 15 during the sliding process, removing dust and impurities from the surface of the components. A hollow box 6 is fixedly connected to the top right side of the base 1. A drawer 5 is slidably connected inside the hollow box 6. The drawer 5 can conveniently store tools for daily use and maintenance for future use. A handle 4 is fixedly connected to the front side of the outer wall of the drawer 5. The handle 4 can facilitate the opening and closing of the drawer 5 for use. An anti-slip sleeve 3 is fixedly connected to the outer wall of the handle 4.

[0043] Reference Figure 1 and Figure 2 A hinge 10 is fixedly connected to the front side of the outer wall of the cabinet 15. An observation window 9 is rotatably connected to the other side of the outer wall of the hinge 10. The observation window 9 can seal the observation window to prevent impurities from entering the ring network cabinet and causing pollution. Multiple handles 13 are fixedly connected at equal intervals to the front side of the outer wall of the cabinet 15. The handles 13 can facilitate the staff to open the cabinet door. Anti-slip sleeves 14 are fixedly connected to the outer wall of the handles 13.

[0044] Specifically, a hinge 10 is fixedly connected to the front of the outer wall of the cabinet 15, and an observation window 9 is rotatably connected to the other side of the outer wall of the hinge 10. The observation window 9 can seal the observation window to prevent impurities from entering the ring network cabinet and causing pollution. Multiple handles 13 are fixedly connected at equal intervals to the front of the outer wall of the cabinet 15. The handles 13 can facilitate the staff to open the cabinet door. Anti-slip sleeves 14 are fixedly connected to the outer wall of the handles 13.

[0045] Working principle: The hydraulic push rod 24 pushes the fixed short plate 21 upwards, then pulls the pull rod 18 to compress the spring 17, causing the spring 17 to contract and thus separating the pull rod 18 from the groove on the outer wall of the double-section outer groove column 20. When the fixed short plate 21 rises, it drives the top cabinet 15 to rise synchronously. Because of the sliding block 11 within the inner sliding plate 12, and because the other end of the sliding block 11 is fixedly connected to the outer wall of the cabinet 15, the inner sliding plate 12 on both sides can move upwards during the cabinet 15's ascent. This mechanism restricts the movement distance and direction of the cabinet 15. Once the desired height is reached, the pull rod 18 is released, and the spring 17 returns to its elasticity, causing the pull rod 18 to pop out and engage with the groove on the outer wall of the double-section external groove column 20. Installation can be completed without the aid of any external tools. This avoids the problem that existing ring main units require a certain amount of installation space for the installation of additional equipment. If the site space is insufficient, it may lead to the inability to install normally and affect subsequent operation and maintenance, thus causing inconvenience to the installation of the ring main unit.

[0046] By activating the motor 201, the fixed short column 209 at the output end rotates. During this rotation, multiple pull ropes 207 are equidistantly fixed to the outer wall, causing them to retract or extend. The other end of each pull rope 207 is fixedly connected to the top of the U-shaped plate 205, and slides within the second slide plate 208 on the inner wall of the base 1. The slide plate 208 guides and limits the movement of the pull ropes 207, ensuring their stability. As the pull ropes 207 retract, the U-shaped plate 205... The U-shaped plate 205 slides on the sliding groove plate 204 on the inner bottom wall of the cabinet 15. Because the U-shaped plate 205 is slidably connected to the sliding groove plate 204, the pulling force of the pull rope 207 will cause the U-shaped plate 205 to slide up and down on the sliding groove plate 204. The fan 203 on the outer wall of the U-shaped plate 205 can accelerate the airflow inside the cabinet 15, thereby achieving heat dissipation for the electrical equipment inside the cabinet 15. The brush 206 can clean the surface of the components inside the cabinet 15 during the sliding process, removing dust and impurities from the surface of the components and preventing dust accumulation from affecting the performance and heat dissipation effect of the equipment.

[0047] 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 ring main unit for easy installation comprising a base (1) characterised in that: The top of the base (1) is fixedly connected with a hydraulic push rod (24), and the top of the base (1) is fixedly connected with a plurality of double-section outer groove columns (20) at equal intervals, and the front side of the outer wall of the double-section outer groove column (20) is fixedly connected with a U-shaped frame (19), and the middle part of the U-shaped frame (19) is slidably connected with a pull rod (18), and the outer wall of the pull rod (18) is fixedly connected with a spring (17), and the top of the double-section outer groove column (20) is threadedly connected with a screw two (16), and the outer wall of the screw two (16) is threadedly connected with a fixed short plate (21), and the top of the fixed short plate (21) is fixedly connected with a plurality of cabinet bodies (15) at equal intervals, and the top of the base (1) is fixedly connected with an inner sliding groove plate long plate (12) on the left and right sides, and the inner sliding groove plate long plate (12) is slidably connected with a sliding block (11), and the outer wall of the other end of the sliding block (11) is fixedly connected with the outer wall of the cabinet body (15), and a plurality of heat dissipation mechanisms (2) are installed on the top of the base (1) at equal intervals, and the heat dissipation mechanism (2) is used for heat dissipation to the inside of the cabinet body (15).

2. The ring main unit according to claim 1, characterized in that: The heat dissipation mechanism (2) comprises a motor (201), the motor (201) is installed on the top of the base (1) at equal intervals, the output end of the motor (201) is fixedly connected with a fixed short column (209), the outer wall of the fixed short column (209) is fixedly connected with a plurality of pull ropes (207) at equal intervals, the inner bottom wall of the cabinet body (15) is fixedly connected with a plurality of sliding groove plate one (204) at equal intervals, the outer wall of the sliding groove plate one (204) is slidably connected with a U-shaped plate (205) on the adjacent side, the outer wall of the U-shaped plate (205) is fixedly connected with a plurality of batteries (202) in the middle part, the outer wall of the U-shaped plate (205) is fixedly connected with a plurality of fans (203) on the adjacent side at equal intervals, the outer wall of the other end of the pull rope (207) is fixedly connected with the top of the U-shaped plate (205), the outer wall of the U-shaped plate (205) is fixedly connected with a brush (206) around, the inner wall of the base (1) is fixedly connected with a plurality of sliding groove plate two (208) at equal intervals, and the inner wall of the sliding groove plate two (208) is slidably connected with the outer wall of the pull rope (207).

3. The ring main unit according to claim 1, characterized in that: The outer wall of the right inner sliding groove plate long plate (12) is threadedly connected with a screw one (7) on the front side, and the outer wall of the screw one (7) is threadedly connected with a hook (8).

4. The ring main unit according to claim 1, characterized in that: The outer wall of the left inner sliding groove plate long plate (12) is threadedly connected with a screw three (23) on the left side, and the outer wall of the screw three (23) is threadedly connected with a prompt board (22).

5. The ring main unit according to claim 1, characterized in that: The top of the base (1) is fixedly connected with a hollow box (6) on the right side, and the inside of the hollow box (6) is slidably connected with a drawer (5).

6. The ring main unit according to claim 5, characterized in that: The outer wall of the drawer (5) is fixedly connected with a handle one (4) on the front side, and the outer wall of the handle one (4) is fixedly connected with an anti-skid sleeve one (3).

7. The ring main unit according to claim 1, characterized in that: The outer wall of the cabinet body (15) is fixedly connected with a hinge (10) on the front side, and the outer wall of the other side of the hinge (10) is rotatably connected with an observation window plate (9).

8. The ring main unit according to claim 1, characterized in that: The outer wall of the cabinet (15) is equidistantly fixedly connected with a plurality of handles two (13), and the outer wall of the handle two (13) is fixedly connected with an anti-skid sleeve two (14).

Citation Information

Patent Citations

  • A power ring main unit that is easy to disassemble and install

    CN114204443B