Ring main unit

Abstract

The invention discloses a ring main unit, and belongs to the technical field of ring main units, and the ring main unit comprises a cabinet body which is internally provided with a placement plate; the placing plate is slidably connected with a placing unit for placing an electric appliance element; the first shell is arranged outside the cabinet body in a sleeving manner; an air blowing unit is arranged between the first shell and the cabinet body so as to cool the cabinet body; first openings are formed in two opposite side walls of the first shell; a plurality of rotating plates are longitudinally arranged in the first opening at intervals; the rotating plate is rotatably connected with the first shell; an adjusting unit is arranged on the rotating plate to adjust the inclination angle of the rotating plate, and external dust or rainwater is prevented from entering the cabinet body. According to the ring main unit, air flow around the ring main unit is accelerated, the heat dissipation effect is enhanced, dust is prevented from entering the ring main unit body, and dryness of air in the ring main unit body is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of ring network cabinets, and in particular relates to a ring network cabinet. Background Art

[0002] A ring main unit is a group of electrical equipment installed in a metal or non-metallic insulating cabinet or made into an assembled interval ring main unit. Its core part uses load switches and fuses. It has the advantages of simple structure, small size, low price, improved power supply parameters and performance, and power supply safety. It is widely used in distribution stations and box-type substations in load centers such as urban residential areas, high-rise buildings, large public buildings, factories and enterprises.

[0003] The existing ring network cabinets installed outdoors have messy internal wiring, and the various electrical components are directly connected to the cabinet body, which makes the electrical components block each other during maintenance and need to be disassembled one by one for maintenance, resulting in inconvenience in maintenance; most outdoor ring network cabinets do not have good dust and rain protection functions, and have poor heat dissipation. If dust enters the ring network cabinet or is not kept in a good dry state, the service life of the electrical components inside the ring network cabinet will be reduced. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a ring main unit, which adopts the following technical solutions:

[0005] A ring main unit, comprising:

[0006] A cabinet body; a placement plate is provided on the cabinet body; a placement unit is slidably connected to the placement plate to place electrical components;

[0007] A first shell, which is sleeved on the outside of the cabinet; a blowing unit is arranged between the first shell and the cabinet to dissipate heat from the cabinet; first openings are arranged on two opposite side walls of the first shell; a plurality of rotating plates are arranged in the first opening at longitudinal intervals; the rotating plate is rotatably connected to the first shell; an adjusting unit is arranged on the rotating plate to adjust the tilt angle of the rotating plate to prevent external dust or rainwater from entering the cabinet.

[0008] Furthermore, the bottom of the cabinet and the first shell are connected via a plurality of support columns to support the cabinet.

[0009] Furthermore, the top of the first shell is in an inverted V shape; the top of the cabinet is connected to an inverted V-shaped isolation plate; and a plurality of heat dissipation holes are provided on the isolation plate.

[0010] Furthermore, the blowing unit includes a first fan and a second fan; the first fan is arranged at the top of the first shell; and the second fan is arranged between the first shell and the cabinet.

[0011] Furthermore, the placement unit includes a placement rack; the placement rack is a box structure; the bottom of the placement rack is provided with a first slider and a second slider at both ends in the width direction; an edge slide groove is provided along the edge of the placement plate; the edge slide groove is annular; the first slider and the second slider can be slidably arranged in two oppositely arranged side edges of the edge slide groove; a stopper is arranged in the edge slide groove extending in the length direction to limit the movement of the second slider in the edge slide groove;

[0012] A plurality of detachable partitions are arranged in the placement rack; the partitions divide the space in the placement rack into a plurality of sub-spaces for placing a plurality of electrical components.

[0013] Furthermore, a plurality of wire placing grooves are provided on one end of the placement rack away from the placement plate; a second opening is provided on one end of the placement rack away from the wire placing grooves; and the second opening is communicated with the subspace.

[0014] Furthermore, a first cabinet door is hinged on the first side wall of the cabinet body; a second cabinet door is hinged on the second side wall adjacent to the first side wall; the first cabinet door and the second cabinet door have the same rotation direction when opened; a third cabinet door is hinged on the first shell body; and the third cabinet door is arranged corresponding to the first cabinet door.

[0015] Furthermore, the adjusting unit includes a winding rope, a rope winding wheel, a second housing, a worm, a worm wheel and a rotating rod; the second housing is fixedly connected to an end of the outer wall of the first housing away from the ground; the worm is rotatably arranged in the second housing; the rope winding wheel is arranged on the outer wall of the second housing, and passes through the outer wall of the second housing to be connected with the worm to drive the worm to rotate; the worm wheel is rotatably arranged in the second housing, and meshes with the worm, so that the worm drives the worm wheel to rotate; the first end of the rotating rod is fixedly connected to the center of the worm wheel; the second end of the rotating rod extends along the outer wall of the first housing, and is rotatably connected to the outer wall of the first housing;

[0016] The first end of the winding rope is connected to a first adjusting block; the second end of the winding rope is connected to a second adjusting block; and the portion of the winding rope between the first end of the winding rope and the second end of the winding rope is wound around the winding rope wheel.

[0017] Furthermore, multiple pull rope plates are fixedly connected to the rotating rod; the first pull rope and the second pull rope are respectively fixedly connected to the two ends of the pull rope plate along the rotation direction; the end of the first pull rope away from the pull rope plate is vertically connected to the multiple rotating plates in sequence; the end of the second pull rope away from the pull rope plate is vertically connected to the multiple rotating plates in sequence, so as to control the rotation direction of the rotating plate by rotating the pull rope plate.

[0018] Further, a fixed box is connected to one end of the first housing close to the rotating rod; the first adjusting block is movably arranged in the fixed box; a spring is arranged between the first end of the first adjusting block and the fixed box to reset the first adjusting block; a water receiving block is connected to the second end of the first adjusting block; the water receiving block is slidably connected to the inner wall of the fixed box;

[0019] The first end of the water receiving block gradually shrinks and is connected to the first regulating block; the second end of the water receiving block is provided with a water receiving trough; an opening of the water receiving trough close to the first regulating block gradually shrinks.

[0020] Beneficial effects:

[0021] (1) A ring network cabinet provided by the present invention divides the interior of a placement rack into multiple subspaces by partitions, and different components are installed in the subspaces, so that the arrangement of components in the cabinet is more reasonable, saving space in the cabinet and facilitating maintenance by staff; a plurality of wire troughs are arranged on the side walls of the placement rack, and the connecting wires of the components pass through the wire troughs, which arrange the connecting wires, making the connecting lines neat and preventing the connecting wires from being entangled, thereby improving the safety in the cabinet and facilitating maintenance by staff;

[0022] (2) The present invention provides a ring network cabinet adjustment unit that controls the inclination angle of the adjustment plate, which can prevent rainwater from entering the interior of the ring network cabinet while dissipating the heat of the ring network cabinet, and will not allow rainwater to come into contact with the electronic components inside the ring network cabinet; through the arrangement of the first fan and the second fan, while accelerating the air flow around the ring network cabinet and enhancing the heat dissipation effect, it prevents dust or rainwater from entering the interior of the ring network cabinet, reduces the humidity of the components inside the cabinet, ensures the dryness of the air inside the ring network cabinet, and makes the ring network cabinet body have waterproof, dustproof and moisture-proof functions, thereby ensuring the normal operation of the equipment, improving safety, preventing erosion, and extending the service life of the ring network cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the external structure of the ring main unit of the present invention;

[0024] Figure 2 It is a schematic diagram of the internal structure of the ring main unit of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the ring main unit of the present invention in which no placement unit is provided in the cabinet;

[0026] Figure 4 It is a structural schematic diagram of the connection between the placement unit and the placement plate of the ring network cabinet of the present invention;

[0027] Figure 5 It is a front view of the interior of the ring main unit of the present invention;

[0028] Figure 6 A bottom view of a placement plate of a ring main unit of the present invention;

[0029] Figure 7 It is a structural schematic diagram of a placement plate of a ring main unit of the present invention;

[0030] Figure 8 The ring main unit of the present invention Figure 1 Enlarged view of point A in the middle;

[0031] Fig. 9 It is a cross-sectional view of the internal structure of the fixed box of the ring main unit of the present invention;

[0032] Fig.10 It is a schematic structural diagram of the connection between the rope winding, rope winding wheel, second housing, worm, worm wheel and rotating rod, first pull rope, second pull rope and rope pull plate of the ring main unit of the present invention;

[0033] Among them, 1. cabinet; 2. first shell; 3. placement plate; 4. first opening; 5. rotating plate; 6. support column; 7. isolation plate; 8. placement rack; 9. first slider; 10. second slider; 11. edge slide; 12. block; 13. partition; 14. wire groove; 15. second opening; 16. first cabinet door; 17. second cabinet door; 18. third cabinet door; 19. first fan; 20. second fan; 21. rope; 22. rope wheel; 23. second shell; 24. worm; 25. worm wheel; 26. rotating rod; 27. rope pull plate; 28. first rope; 29. ​​second rope; 30. fixed box; 31. spring; 32. water receiving block; 33. water receiving trough; 34. first adjustment block; 35. second adjustment block. DETAILED DESCRIPTION

[0034] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below.

[0035] Example 1

[0036] Reference Figures 1 to 10As shown, a ring main unit comprises:

[0037] A cabinet 1; a placement plate 3 is provided in the cabinet 1; a placement unit is slidably connected to the placement plate 3 to place electrical components;

[0038] A first shell 2 is sleeved outside the cabinet 1; a blowing unit is provided between the first shell 2 and the cabinet 1 to dissipate heat from the cabinet 1; first openings 4 are provided on two oppositely arranged side walls of the first shell 2; a plurality of rotating plates 5 are longitudinally spaced in the first opening 4; the rotating plates 5 are rotatably connected to the first shell 2; an adjusting unit is provided on the rotating plate 5 to adjust the inclination angle of the rotating plate 5 to prevent external dust or rainwater from entering the cabinet 1.

[0039] Through the above technical solution, the blowing unit accelerates the air flow between the cabinet 1 and the first shell 2, and the blowing unit intermittently circulates the air, and the air entering the first shell 2 is blown out from the gap between two adjacent rotating plates 5 through the blowing unit to circulate the air.

[0040] In this embodiment, the bottom of the cabinet 1 and the first shell 2 are connected via a plurality of support columns 6 to support the cabinet 1 .

[0041] Through the above technical solution, the multiple support columns 6 at the bottom of the cabinet 1 support the cabinet 1, so that there is a certain gap between the bottom of the cabinet 1 and the bottom of the first shell 2. While accelerating the heat dissipation of the cabinet 1, it prevents rainwater on the ground from entering the cabinet 1 from the bottom of the first shell 2, thereby ensuring the dryness of the interior of the cabinet 1.

[0042] In this embodiment, the top of the first shell 2 is in an inverted V shape; the top of the cabinet 1 is connected with an inverted V-shaped isolation plate 7; and a plurality of heat dissipation holes are provided on the isolation plate 7.

[0043] Through the above technical scheme, the top of the first shell 2 is an inverted V-shape, which can prevent rainwater from gathering on the top of the first shell 2 and drain the rainwater to both sides; a plurality of heat dissipation holes are arranged on the inverted V-shaped isolation plate 7 on the top of the cabinet 1, and the heat generated by the cabinet 1 is dissipated to between the first shell 2 and the cabinet 1 through the heat dissipation holes, and then dissipated to the outside through the rotating plate 5 at the first opening 4 on the first cabinet 1; at the same time, when the blowing unit is working, it can not only blow air into the cabinet 1 through the heat dissipation holes, but also blow the heat generated by the cabinet 1 through the gap between two adjacent rotating plates 5, thereby enhancing the heat dissipation effect of the cabinet 1.

[0044] In this embodiment, the blowing unit includes a first fan 19 and a second fan 20 ; the first fan 19 is disposed at the top of the first shell 2 ; and the second fan 20 is disposed between the first shell 2 and the cabinet 1 .

[0045] Through the above technical scheme, the first fan 19 and the second fan 20 are both connected to a controller, and intermittently work at the same time under the action of the controller; the first fan 19 blows the air on the top of the first shell 2 downward, and the second fan blows the air at the bottom of the first shell 2 upward, and finally blows the air out from the gap between the two adjacent rotating plates 5 at the first opening 4 to achieve air circulation; the first fan 19 and the second fan 20 work at the same time to blow out the air and heat between the cabinet 1 and the first shell 2, and the first fan 19 and the second fan 20 stop working at the same time, so that the outside air enters the cabinet 1 and the first shell 2, and finally enters the cabinet 1, and performs circulating blowing work to ensure the heat dissipation of the cabinet 1.

[0046] In this embodiment, the placement unit includes a placement rack 8; the placement rack 8 is a box structure; a first slider 9 and a second slider 10 are respectively arranged at both ends of the bottom of the placement rack 8 in the width direction; an edge slide groove 11 is opened along the edge of the placement plate 3; the edge slide groove 11 is annular; the first slider 9 and the second slider 10 can be slidably arranged in two oppositely arranged side edges of the edge slide groove 11; a stopper 12 is arranged in the edge slide groove 11 extending in the length direction to limit the movement of the second slider 10 in the edge slide groove 11;

[0047] A plurality of detachable partitions 13 are arranged in the placement rack 8; the partitions 13 divide the space in the placement rack 8 into a plurality of sub-spaces for placing a plurality of electrical components.

[0048] Among them, one end of the two side edges extending along the width direction of the edge slide groove 11 is connected to the outside of the placement plate 3, so that the placement rack 8 can move along the width direction of the placement plate 3; one end of the two side edges extending along the length direction of the edge slide groove 11 is connected to the outside of the placement plate 3, so that the placement rack 8 can move along the length direction of the placement plate 3.

[0049] Among them, there are two first sliders 9, which are respectively arranged at the two ends of the bottom of the placement rack 8 along the length direction; there are two second sliders 10, which are respectively arranged at the two ends of the bottom of the placement rack 8 along the length direction.

[0050] Through the above technical scheme, the moving distance of the placement rack 8 is limited by the stopper 12 to prevent the placement rack 8 from sliding off the placement plate 3; according to the size of the electrical components actually required to be placed, the interior of the placement rack 8 is divided into sub-spaces of corresponding sizes by the partition 13, which has a wider range of applications and different components are installed in the sub-spaces of the placement rack 8, making the arrangement of components in the cabinet 1 more reasonable and saving space in the cabinet 1.

[0051] In this embodiment, a plurality of wire placing grooves 14 are provided on one end of the placement rack 8 away from the placement plate 3; a second opening 15 is provided on one end of the placement rack 8 away from the wire placing grooves 14; and the second opening 15 is communicated with the subspace.

[0052] Through the above technical scheme, a plurality of wire grooves 14 are provided on the side wall of the placement rack 8, and a plurality of electrical components are placed one by one in the subspace of the placement rack 8, and the connecting wires pass through the wire grooves 14. The wire grooves 14 organize the connecting wires to make the connecting lines neat and prevent the connecting wires from being entangled, thereby improving the safety in the cabinet 1 and facilitating maintenance by the staff; the wiring port of the electrical component is arranged corresponding to the second opening 15, and the wiring of the electrical component can be achieved from the second opening 15, which is more convenient and quick; the protruding area of ​​the electrical component can extend from the opening, which is convenient for the installation of the electrical component and the connection of the electrical component in the subspace.

[0053] In this embodiment, a first cabinet door 16 is arranged on the first side wall of the cabinet body 1; a second cabinet door 17 is arranged on the second side wall adjacent to the first side wall; the first cabinet door 16 and the second cabinet door 17 have the same rotation direction when opened; a third cabinet door 18 is arranged on the first shell body 2; and the third cabinet door 18 is arranged corresponding to the first cabinet door 16.

[0054] By the above technical scheme, when the first cabinet door 16 is opened and the electrical components near the first cabinet door 16 are inspected, the placement rack 8 is pulled to move the placement rack 8 along the length direction of the placement plate 3, so that the placement rack 8 can move outward from the first cabinet door 16, and under the action of the stopper 12, it can only move a certain distance toward the first cabinet door 16, which is convenient for inspecting the electrical components near the first cabinet door 16, and at the same time, the electrical components far away from the first cabinet door 16 are also moved outward a certain distance, which is also convenient for inspecting them; when the second cabinet door 17 is opened and the electrical components near the second cabinet door 17 are inspected, the placement rack 8 is pulled to move the placement rack 8 along the width direction of the placement plate 3, so that the placement rack 8 can move outward from the second cabinet door 17, and under the action of the stopper 12, it can only move a certain distance toward the second cabinet door 17, which is convenient for inspecting the electrical components near the second cabinet door 17, and at the same time, the electrical components far away from the second cabinet door 17 are also moved outward a certain distance, which is also convenient for inspecting them, and a certain electrical component can be directly inspected without multiple disassembly.

[0055] In this embodiment, the adjusting unit includes a winding rope 21, a rope winding wheel 22, a second housing 23, a worm 24, a worm wheel 25 and a rotating rod 26; the second housing 23 is fixedly connected to an end of the outer wall of the first housing 2 away from the ground; the worm 24 is rotatably arranged in the second housing 23; the rope winding wheel 22 is arranged on the outer wall of the second housing 23, and passes through the outer wall of the second housing 23 to be connected with the worm 24 to drive the worm 24 to rotate; the worm wheel 25 is rotatably arranged in the second housing 23, and meshes with the worm 24, so that the worm 24 drives the worm wheel 25 to rotate; the first end of the rotating rod 26 is fixedly connected to the center of the worm wheel 25; the second end of the rotating rod 26 extends along the outer wall of the first housing 2, and is rotatably connected to the outer wall of the first housing 2;

[0056] The first end of the winding rope 21 is connected to the first adjusting block 34 ; the second end of the winding rope 21 is connected to the second adjusting block 35 ; the portion of the winding rope 21 between the first end of the winding rope 21 and the second end of the winding rope 21 is wound on the winding rope wheel 22 .

[0057] Through the above technical scheme, when the upper and lower relative positions of the first adjusting block 34 and the second adjusting block 35 change, the rope 21 connecting the first adjusting block 34 and the second adjusting block 35 generates a force on the rope wheel 22, so that the rope wheel 22 starts to rotate, and the rotating rope wheel 22 drives the worm 24 to rotate. Since the worm 24 is meshing with the worm wheel 25, the worm wheel 25 drives the rotating rod 26 to rotate; the size of the change in the upper and lower relative distance between the first adjusting block 34 and the second adjusting block 35 corresponds to the rotation amplitude of the rotating rod 26, and the upper and lower relative distance between the first adjusting block 34 and the second adjusting block 35 has a small change range, so that the rotating rod 26 rotates left and right by a certain amplitude.

[0058] In this embodiment, a plurality of pull rope plates 27 are fixedly connected to the rotating rod 26; a first pull rope 28 and a second pull rope 29 are respectively fixedly connected to the pull rope plate 27 at both ends along the rotation direction; an end of the first pull rope 28 away from the pull rope plate 27 is vertically connected to a plurality of rotating plates 5 in sequence; an end of the second pull rope 29 away from the pull rope plate 27 is vertically connected to a plurality of rotating plates 5 in sequence, so as to control the rotation direction of the rotating plate 5 by rotating the pull rope plate 27.

[0059] The first pull rope 28 is disposed on one end of the pull rope plate 27 close to the first shell 2 , and the second pull rope 29 is disposed on one end of the pull rope plate 27 away from the first shell 2 .

[0060] Through the above technical solution, when the rotating rod 26 rotates left and right to a certain extent, the pull rope plate 27 follows the rotating rod 26 to rotate to a certain extent. When the pull rope plate 27 rotates in the direction of the first shell 2, the second pull rope 29 moves upward and the first pull rope 28 moves downward, so that the end of the rotating plate 5 away from the first shell 2 is tilted upward; when the pull rope plate 27 rotates in the direction away from the first shell 2, the first pull rope 28 moves upward and the second pull rope 29 moves downward, so that the end of the rotating plate 5 close to the first shell 2 is tilted upward.

[0061] In this embodiment, a fixed box 30 is connected to one end of the first housing 2 near the rotating rod 26; a first adjusting block 34 is movably disposed in the fixed box 30; a spring 31 is disposed between the first end of the first adjusting block 34 and the fixed box 30 to reset the first adjusting block 34; a water receiving block 32 is connected to the second end of the first adjusting block 34; the water receiving block 32 is slidably connected to the inner wall of the fixed box 30;

[0062] The first end of the water receiving block 32 gradually shrinks and is connected to the first regulating block 34 ; the second end of the water receiving block 32 is provided with a water receiving groove 33 ; the opening of one end of the water receiving groove 33 close to the first regulating block 34 gradually shrinks.

[0063] Among them, in rainless weather, the position of the first adjusting block 34 in the fixed box 30 does not change. At this time, the state of the rotating plate 5 is that the end away from the first shell 2 is tilted upward. This tilt angle can prevent dust and other impurities from entering the first shell 2; when it rains, rainwater falls into the water receiving groove 33 on the top of the first adjusting block 34, so that the first adjusting block 34 compresses the spring 31 under the action of the gravity of the rainwater and moves downward. At this time, the second adjusting block 35 starts to move upward to drive the rope winding wheel 22 to rotate, so that the rope pulling plate 27 on the rotating rod 26 rotates toward the first shell 2, so that the first pull rope 28 moves downward and the second pull rope 29 moves upward. The state of the rotating plate 5 is that the end close to the first shell 2 is tilted upward to prevent rainwater from entering the first shell 2.

[0064] Through the above technical solution, the inverted V-shaped structure at the top of the first shell 2 introduces rainwater into the sliding groove, so that the trumpet-shaped opening at the top of the first adjusting block 34 collects rainwater. Under the action of gravity, the first adjusting block 34 falls and the second adjusting block 35 rises, so that the rope winding wheel 22 drives the rotating rod 26 to rotate, and the rotating rotating rod 26 drives the rope pulling plate 27 to rotate, and the inclination angle of the rotating plate 5 is adjusted, so that the end of the rotating plate 5 away from the first shell 2 is tilted downward to prevent rainwater from entering the first shell 2; after the rain stops, the water in the first adjusting block 34 evaporates, and under the action of the spring 31, the first adjusting block 34 rises and the second adjusting block 35 falls, so that the rope winding wheel 22 drives the rotating rod 26 to rotate, and the rotating rotating rod 26 drives the rope pulling plate 27 to rotate, and the inclination angle of the rotating plate 5 is adjusted, so that the end of the rotating plate 5 away from the first shell 2 is tilted upward to prevent dust and the like from entering the first shell 2. At the same time, under the action of the second fan 20, the humid air at the bottom is blown out from the first opening 4.

[0065] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A ring main unit, characterized in that: include: A cabinet body; a placement plate is provided on the cabinet body; a placement unit is slidably connected to the placement plate to place electrical components; A first shell, which is sleeved on the outside of the cabinet; a blowing unit is arranged between the first shell and the cabinet to dissipate heat from the cabinet; first openings are arranged on two opposite side walls of the first shell; a plurality of rotating plates are arranged in the first opening at longitudinal intervals; the rotating plate is rotatably connected to the first shell; an adjusting unit is arranged on the rotating plate to adjust the tilt angle of the rotating plate to prevent external dust or rainwater from entering the cabinet.

2. The ring main unit according to claim 1, characterized in that: The bottom of the cabinet and the first shell are connected via a plurality of support columns to support the cabinet.

3. The ring main unit according to claim 1, characterized in that: The top of the first shell is in an inverted V shape; the top of the cabinet is connected to an inverted V-shaped isolation plate; and a plurality of heat dissipation holes are arranged on the isolation plate.

4. The ring main unit according to claim 1, characterized in that: The blowing unit includes a first fan and a second fan; the first fan is arranged at the top of the first shell; and the second fan is arranged between the first shell and the cabinet.

5. The ring main unit according to claim 1, characterized in that: The placement unit comprises a placement rack; the placement rack is a box structure; a first slider and a second slider are respectively arranged at both ends of the bottom of the placement rack in the width direction; an edge slide groove is opened along the edge of the placement plate; the edge slide groove is annular; the first slider and the second slider can be slidably arranged in two opposite side edges of the edge slide groove; A stopper is provided in the edge sliding groove extending in the length direction to limit the movement of the second sliding block in the edge sliding groove; A plurality of detachable partitions are arranged in the placement rack; the partitions divide the space in the placement rack into a plurality of sub-spaces for placing a plurality of electrical components.

6. The ring main unit according to claim 5, characterized in that: A plurality of wire placing grooves are arranged on one end of the placement rack away from the placement plate; a second opening is arranged on one end of the placement rack away from the wire placing grooves; and the second opening is communicated with the subspace.

7. The ring main unit according to claim 1, characterized in that: A first cabinet door is hinged on the first side wall of the cabinet body; a second cabinet door is hinged on the second side wall adjacent to the first side wall; the first cabinet door and the second cabinet door have the same rotation direction when opened; a third cabinet door is hinged on the first shell body; the third cabinet door is arranged corresponding to the first cabinet door.

8. The ring main unit according to claim 1, characterized in that: The adjusting unit includes a winding rope, a rope winding wheel, a second shell, a worm, a worm wheel and a rotating rod; the second shell is fixedly connected to an end of the outer wall of the first shell away from the ground; the worm is rotatably arranged in the second shell; the rope winding wheel is arranged on the outer wall of the second shell, and passes through the outer wall of the second shell to be connected with the worm to drive the worm to rotate; the worm wheel is rotatably arranged in the second shell and meshed with the worm so that the worm drives the worm wheel to rotate; the first end of the rotating rod is fixedly connected to the center of the worm wheel; the second end of the rotating rod extends along the outer wall of the first shell and is rotatably connected to the outer wall of the first shell; The first end of the winding rope is connected to a first adjusting block; the second end of the winding rope is connected to a second adjusting block; and the portion of the winding rope between the first end of the winding rope and the second end of the winding rope is wound around the winding rope wheel.

9. The ring main unit according to claim 8, characterized in that: A plurality of pull rope plates are fixedly connected to the rotating rod; a first pull rope and a second pull rope are respectively fixedly connected to the two ends of the pull rope plate along the rotating direction; an end of the first pull rope away from the pull rope plate is vertically connected to the plurality of rotating plates in sequence; an end of the second pull rope away from the pull rope plate is vertically connected to the plurality of rotating plates in sequence, so as to control the rotating direction of the rotating plate by rotating the pull rope plate.

10. The ring main unit according to claim 8, characterized in that: A fixed box is connected to one end of the first housing close to the rotating rod; the first adjusting block is movably arranged in the fixed box; a spring is arranged between the first end of the first adjusting block and the fixed box to reset the first adjusting block; a water receiving block is connected to the second end of the first adjusting block; the water receiving block is slidably connected to the inner wall of the fixed box; The first end of the water receiving block gradually shrinks and is connected to the first regulating block; the second end of the water receiving block is provided with a water receiving trough; an opening of the water receiving trough close to the first regulating block gradually shrinks.

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