Looped net box convenient for wiring maintenance

Abstract

The application discloses a ring net box convenient for wiring maintenance, which comprises a box body, a maintenance mechanism arranged in the box body, vertical bars and horizontal bars fixed perpendicularly to each other, the outer surfaces of the vertical bars and the horizontal bars are fixedly connected with the box body, the outer surface of each vertical bar is movably connected with a supporting block, the bottom of the supporting block is provided with an inner cavity, the outer surface of the supporting block is provided with a wire hole in communication with the inner cavity, the inner parts of the vertical bars and the horizontal bars are provided with sliding grooves in communication with each other, the outer surfaces of the vertical bars and the horizontal bars are provided with connecting grooves in communication with the sliding grooves, the inner part of the sliding groove on each vertical bar is movably connected with a clamp wheel, the shaft end of the clamp wheel is movably connected with the inner part of the connecting groove, and the shaft end of the clamp wheel is rotatably connected with the outer surface of the supporting block, and belongs to the technical field of ring net boxes. The ring net box solves the problem that the existing ring net cabinet is inconvenient to disassemble and maintain because electrical elements are compactly installed in the cabinet body.

Description

Technical Field

[0001] This invention relates to the field of ring main unit technology, specifically to a ring main unit that is easy to wire and maintain. Background Technology

[0002] A ring main unit is an electrical device consisting of a set of high-voltage switchgear housed in a steel plate metal cabinet or assembled into a modular ring network power supply unit. Its core components utilize load switches and fuses, offering advantages such as simple structure, small size, low cost, improved power supply parameters and performance, and enhanced power supply safety. It is widely used in substations and prefabricated substations in load centers such as urban residential areas, high-rise buildings, large public buildings, and factories.

[0003] To reduce the size of ring main units, their internal electrical components are installed more compactly. However, some smaller electrical components are inconvenient to install and disassemble inside the ring main unit due to their small size and compact installation. This makes it difficult to disassemble and maintain the electrical components during subsequent use, especially for electrical components with many tightly connected wires. Therefore, it is necessary to improve the existing ring main units to address the problem of inconvenient maintenance. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a ring main unit that facilitates wiring and maintenance, solving the problem that existing ring main units have electrical components that are compactly installed inside the cabinet, making disassembly and maintenance inconvenient and difficult.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a ring main unit for easy wiring and maintenance, comprising a housing, wherein a maintenance mechanism is provided inside the housing, the maintenance mechanism comprising vertical and horizontal bars fixed perpendicularly to each other, the outer surfaces of the vertical and horizontal bars being fixedly connected to the interior of the housing, a support block being movably connected to the outer surface of the vertical bars, an inner cavity being formed at the bottom of the support block, and a wire hole communicating with the interior of the inner cavity being formed on the outer surface of the support block, and interconnected sliding grooves being formed inside the vertical and horizontal bars, and the outer surfaces of the vertical and horizontal bars being... The system includes a connecting groove that communicates with the slide groove. A clamping wheel is movably connected inside the slide groove on the vertical bar. The shaft end of the clamping wheel is movably connected to the inside of the connecting groove. The shaft end of the clamping wheel is rotatably connected to the outer surface of the support block. A fixing bar is fixedly connected inside the slide groove on the horizontal bar. The outer surface of the clamping wheel is movably connected to the outer surface of the fixing bar. A locking rod is fixedly connected to both sides of the outer surface of the support block. Clamping bars are movably connected to both the upper and lower sides of the locking rod. The outer surface of the upper clamping bar is fixedly connected to the inside of the housing. The lower clamping bar abuts and clamps the locking rod by sliding inside the housing.

[0006] Preferably, one end of the lower clamping bar is fixedly connected to the outer surface of the upper clamping bar via a spring rod, and the bottom of the other end of the lower clamping bar is provided with a chamfer. The locking rod pushes the lower clamping bar to slide by abutting against the chamfer. The lower clamping bar is magnetically connected to an electromagnet, and the outer surface of the electromagnet is embedded and fixedly connected to the outer surface of the upper clamping bar.

[0007] Preferably, the inner cavity is provided with a wire clamping assembly, which includes clamping plates. The clamping plates are disposed on both sides of one edge of the wire hole. The outer surfaces of both clamping plates are movably connected to the interior of the inner cavity. A clamping groove is formed on the side of the outer surfaces of both clamping plates that are close to each other. The interior of the clamping groove is connected to the interior of the wire hole. A push-pull rod is provided on the side of the outer surfaces of both clamping plates that are far from each other. One end of each push-pull rod is fixedly connected to the interior of the inner cavity.

[0008] Preferably, grooves are provided on the outer surfaces of the two clamping plates that are far apart from each other. Slider blocks are fixedly connected inside the grooves on both sides. Slide rails are slidably connected to the outer surfaces of the sliders on both sides. The outer surfaces of the slide rails on both sides are slidably connected to the inside of the grooves on both sides. The outer surfaces of the slide rails on both sides are fixedly connected to the output ends of the push-pull rods on both sides.

[0009] Preferably, the inner cavity is provided with a winding assembly, the winding assembly includes a winding block, the outer surface of the winding block is movably connected to the interior of the inner cavity, a T-shaped support plate is fixedly connected to one side of the outer surface of the winding block, and winding plates are hinged to both sides of the outer surface of the support plate, and adjusting rods are rotatably connected to the outer surfaces of the winding plates on both sides, with one end of each adjusting rod rotatably connected to the outer surface of the support plate.

[0010] Preferably, a connecting plate is movably connected to the outer surface of the roll block, the outer surface of the connecting plate is movably connected to the interior of the inner cavity, a groove is provided on the other side of the outer surface of the roll block, a rotating motor is provided inside the groove, the output end of the rotating motor is fixedly connected to the interior of the groove, and the outer surface of the rotating motor is fixedly connected to the outer surface of the connecting plate.

[0011] Preferably, a traction unit is provided on the outside of the connecting plate. The traction unit includes a drum, which is disposed on both sides of the outer surface of the block. The outer surface of the drum is rotatably connected to the interior of the inner cavity. A traction rope is wound around the outer surface of the drum. Two sets of fixed pulleys are movably connected to the outer surface of the traction rope. The outer surfaces of both sets of fixed pulleys are fixedly connected to the interior of the inner cavity. A lifting ring is wound around one end of the traction rope. The outer surface of the lifting ring is fixedly connected to the top of the connecting plate. A winding motor is fixedly connected to the outer surface of the drum. The outer surface of the winding motor is fixedly connected to the outer surface of the support block. The output end of the winding motor is rotatably connected through the body of the support block.

[0012] Preferably, telescopic rods are provided on both sides of the outer surface of the connecting plate, and lugs are fixedly connected to both ends of the telescopic rods. The outer surface of one lug is fixedly connected to the outer surface of the connecting plate, and the outer surface of the other lug is fixedly connected to the interior of the cavity.

[0013] Beneficial effects This invention provides a ring main unit that facilitates wiring and maintenance. Compared with existing technologies, it has the following advantages: (1) By setting up a maintenance mechanism, the electrical components are installed on the support block, and the connecting wires are arranged using the inner cavity and wire holes. By setting redundant connecting wires inside the inner cavity, the support block can slide out of the box along the vertical and horizontal bars through the connection of the clamping wheel and the sliding groove and the connecting groove, as well as the cooperation of the clamping wheel and the fixed bar. This avoids the obstruction of adjacent electrical components, which would cause difficulties in disassembly and maintenance. In the process of the support block driving the electrical components to move, the extension of the redundant connecting wires inside the inner cavity makes it easy for the ends of the connecting wires to move synchronously with the electrical components, thus facilitating the disassembly and assembly of both, and also facilitating the disassembly and maintenance of the connecting wires.

[0014] (2) By setting the wire clamping assembly, the output ends of the push-pull rods on both sides can extend and drive the corresponding clamping plates to move closer to each other, thereby using the clamping grooves on both sides to clamp the connecting wire part at the edge of the wire hole, so that the redundant part of the connecting wire can be neatly stored and stretched inside the cavity. This makes it easier for the redundant part of the connecting wire to be processed synchronously when the support block drives the electrical components to be disassembled and assembled. Furthermore, the position of the clamping plate can be adjusted by the cooperation of the groove, slider and slide rail, so that the clamping grooves of different sizes of the clamping plate can be connected to the wire hole, so as to clamp the connecting wires of different specifications.

[0015] (3) By setting up a winding assembly, the output end of the adjusting rod can be extended to drive the two winding plates on both sides to rotate at one end of the support plate through the hinge. First, the winding plate on one side rotates and abuts against the redundant part of the connecting line, so that the redundant part is equally divided and tightened on both sides. Then, the winding plate on the other side rotates and abuts against the redundant part of the connecting line, thus completing the clamping of the middle part of the redundant part. Then, the rotating motor on the connecting plate drives the winding block, the support plate and the two winding plates to rotate, so that the redundant part of the connecting line is wound on the winding plate, so that the redundant part of the connecting line can be neatly stored in the inner cavity. The redundant part of the connecting line is released by reversing the rotating motor, so that the connecting line can adapt to the movement of the support block and electrical components.

[0016] (4) By setting up a traction unit, the drum can rewind or release the traction rope in both directions. The traction rope is supported by two fixed pulleys and the traction rope is connected by the lifting ring. This allows the connecting plate to drive the roll block and the roll plate to rise and fall inside the cavity, which facilitates the stretching and winding of the redundant part of the connecting line by the roll plate. The drum can rewind the traction rope so that the roll plate can rewind the redundant part of the connecting line. At the same time, during the movement of the connecting plate, the output end of the telescopic rod can improve the stability of the movement of the connecting plate and the roll plate through the telescopic and the connection of the two ear plates. Attached Figure Description

[0017] Figure 1 This is a perspective view of the internal structure of the present invention; Figure 2 This is a perspective view of the external structure of the clamping strip of the present invention; Figure 3 This is a perspective view of the internal structure of the support block of the present invention; Figure 4 This is a perspective view of the external structure of the clamping plate of the present invention; Figure 5 This is a perspective view of the external structure of the support plate of the present invention; Figure 6 This is a three-dimensional view of the external structure of the connecting plate of the present invention.

[0018] In the diagram: 1. Box body; 2. Vertical bar; 3. Horizontal bar; 4. Support block; 5. Inner cavity; 6. Wire hole; 7. Wire clamping assembly; 71. Clamping plate; 72. Clamping groove; 73. Push-pull rod; 74. Groove; 75. Slider; 76. Slide rail; 8. Winding assembly; 81. Winding block; 82. Support plate; 83. Winding plate; 84. Adjusting rod; 85. Connecting plate; 86. Traction unit; 861. Drum; 862. Fixed pulley; 863. Lifting ring; 864. Winding motor; 865. Telescopic rod; 866. Fixed lug; 87. Embedded groove; 88. Rotating motor; 9. Slide groove; 10. Connecting groove; 11. Clamping wheel; 12. Fixed bar; 13. Locking rod; 14. Clamping bar; 15. Spring rod; 16. Electromagnet. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-6 This invention provides a technical solution: a ring main unit that facilitates wiring and maintenance. The enclosure includes a housing 1, inside which is a maintenance mechanism. This mechanism includes vertical bars 2 and horizontal bars 3 fixed perpendicularly to each other. Multiple vertical bars 2 are mounted on the horizontal bars 3, and the spacing between adjacent vertical bars 2 is determined according to actual needs. The outer surfaces of both the vertical bars 2 and the horizontal bars 3 are fixedly connected to the interior of the housing 1. Support blocks 4 are movably connected to the outer surfaces of the vertical bars 2. The side of the support block 4 closest to the interior of the housing 1 has a mounting position for installing electrical components. An inner cavity 5 is formed at the bottom of the support block 4. The inner cavity 5 reduces the weight of the support block 4 and provides storage space for storing redundant connecting wires. The outer surface of block 4 has wire holes 6 that communicate with the interior of cavity 5. The wire holes 6 have a larger diameter to accommodate wiring of different specifications of connecting wires, and there are two sets. One set is located on the top of block 4 and on the side of block 4 facing the interior of housing 1, and the other set is located on the left and right sides of block 4 and on the side of block 4 facing the interior of housing 1. This allows for wiring according to actual installation requirements. The interiors of vertical bars 2 and horizontal bars 3 have interconnected sliding grooves 9. The inner width of the sliding grooves 9 on vertical bars 2 decreases sequentially from the inside to the outside. The outer surfaces of vertical bars 2 and horizontal bars 3 have connecting grooves 10 that communicate with the sliding grooves 9. The sliding groove 9 is internally connected to a clamping wheel 11. The outer diameter of the clamping wheel 11 is matched with the inner diameter of the sliding groove 9 on the vertical bar 2. Since the outer diameter of the clamping wheel 11 corresponds one-to-one with the inner width of the sliding groove 9 on the vertical bar 2, the problem of the support block 4 being mismatched with the vertical bar 2 when sliding along the horizontal bar 3 can be avoided. The shaft end of the clamping wheel 11 is internally connected to the connecting groove 10, and the shaft end of the clamping wheel 11 is rotatably connected to the outer surface of the support block 4. The sliding groove 9 on the horizontal bar 3 is fixedly connected to a fixing bar 12. The fixing bar 12 can be connected to clamping wheels 11 with different outer diameters to facilitate the abutment and support of clamping wheels 11 with different outer diameters. This can improve the stability of different support blocks 4 when they move along the crossbar 3, and also reduce the wear of different clamping wheel 11 shaft ends when they move inside the groove 10 on the crossbar 3. The outer surface of the clamping wheel 11 is movably connected to the outer surface of the fixed bar 12. Both sides of the outer surface of the support block 4 are fixedly connected to the clamping rod 13. The upper and lower sides of the clamping rod 13 are movably connected to the clamping bar 14. The contact between the clamping rod 13 and the upper and lower clamping bars 14 can fix and support the support block 4 and the corresponding electrical components. The outer surface of the upper clamping bar 14 is fixedly connected to the inside of the housing 1. The lower clamping bar 14 slides inside the housing 1 to abut and clamp the clamping rod 13.

[0021] One end of the lower clamping bar 14 is fixedly connected to the outer surface of the upper clamping bar 14 via a spring rod 15. The spring rod 15 can easily return to its original position after the lower clamping bar 14 moves by rebounding, thereby achieving the clamping of the lever 13. The bottom of the other end of the lower clamping bar 14 is provided with a chamfer. The lever 13 pushes the lower clamping bar 14 to slide by abutting against the chamfer. The lower clamping bar 14 is magnetically connected to an electromagnet 16. The electromagnet 16 is electrically connected to an external control circuit. The lower clamping bar 14 is made of a permanent magnet and has a pressure-resistant and wear-resistant coating on its surface. The electromagnet 16 can easily disengage from the lever 13 by magnetic attraction with the lower clamping bar 14, thereby facilitating the movement of the support block 4. The outer surface of the electromagnet 16 is embedded and fixedly connected to the outer surface of the upper clamping bar 14.

[0022] The inner cavity 5 is equipped with a wire clamping assembly 7, which includes clamping plates 71. The clamping plates 71 are located on both sides of one edge of the wire hole 6. The two clamping plates 71 move synchronously in opposite directions along the axis of the wire hole 6 in a mirror-symmetrical manner, which can clamp or loosen the connecting wire. The outer surfaces of the two clamping plates 71 are movably connected to the interior of the inner cavity 5. The outer surfaces of the two clamping plates 71 that are close to each other are provided with clamping grooves 72. Multiple sets of clamping grooves 72 are provided on the surface of the clamping plates 71, and the inner diameter of each set of clamping grooves 72 is different, so as to clamp connecting wires with different outer diameters. The interior of the clamping grooves 72 is connected to the interior of the wire hole 6. The outer surfaces of the two clamping plates 71 that are far apart from each other are provided with push-pull rods 73. The push-pull rods 73 are made of electric push rods and are electrically connected to an external control circuit. One end of the push-pull rods 73 on both sides is fixedly connected to the interior of the inner cavity 5.

[0023] The outer surfaces of the two clamping plates 71, on opposite sides, are provided with grooves 74. The grooves 74 provide space for movement to avoid occupying the extension space of the push-pull rod 73 output end, and can reduce the weight of the clamping plates 71 to reduce drive power consumption. Slider 75 is fixedly connected inside the grooves 74 on both sides. Slide rails 76 are slidably connected to the outer surfaces of the sliders 75 on both sides. The sliders 75 and slide rails 76 are made of linear motors with self-locking function and are electrically connected to external control circuit. The outer surfaces of the slide rails 76 on both sides are slidably connected to the inside of the grooves 74 on both sides, and the outer surfaces of the slide rails 76 on both sides are fixedly connected to the output ends of the push-pull rods 73 on both sides.

[0024] The inner cavity 5 is equipped with a winding assembly 8, which includes a winding block 81. The outer surface of the winding block 81 is movably connected to the interior of the inner cavity 5. A T-shaped support plate 82 is fixedly connected to one side of the outer surface of the winding block 81. The support plate 82 serves as a connection and support. Both sides of the outer surface of the support plate 82 are hinged to winding plates 83. The winding plates 83 can be evenly divided into a cylinder, similar to the structure of a curling iron. Its arc surface can facilitate the winding of redundant connecting wires and avoid wear during winding. Adjusting rods 84 are rotatably connected to the outer surfaces of the winding plates 83 on both sides. The adjusting rods 84 are made of electric push rods and are electrically connected to an external control circuit. One end of the adjusting rods 84 on both sides is rotatably connected to the outer surface of the support plate 82.

[0025] A connecting plate 85 is movably connected to the outer surface of the roll block 81. The connecting plate 85 serves as a connection and support. The outer surface of the connecting plate 85 is movably connected to the interior of the inner cavity 5. A groove 87 is provided on the other side of the outer surface of the roll block 81. The groove 87 serves as a storage and protection function and can reduce the weight of the roll block 81. A rotary motor 88 is installed inside the groove 87. The rotary motor 88 is made of a servo motor and is electrically connected to an external control circuit. The output end of the rotary motor 88 is fixedly connected to the interior of the groove 87. The outer surface of the rotary motor 88 is fixedly connected to the outer surface of the connecting plate 85.

[0026] A traction unit 86 is provided on the outside of the connecting plate 85. The traction unit 86 includes a drum 861, which is located on both sides of the outer surface of the block 81. A traction rope is wound on the drum 861, and the balance can be improved by traction from both sides. The outer surface of the drum 861 is rotatably connected to the inside of the inner cavity 5. The traction rope is wound around the outer surface of the drum 861. Two sets of fixed pulleys 862 are movably connected to the outer surface of the traction rope. The fixed pulleys 862 can support and reverse the traction rope, thereby reducing the wear of the traction rope during traction. The outer surfaces of both sets of fixed pulleys 862 are fixedly connected to the inside of the inner cavity 5. One end of the guide rope is wound with a lifting ring 863, which facilitates the traction rope to pull the connecting plate 85. The traction rope is connected in sequence to the drum 861, the lower fixed pulley 862, the upper fixed pulley 862, and the lifting ring 863. The outer surface of the lifting ring 863 is fixedly connected to the top of the connecting plate 85. The outer surface of the drum 861 is fixedly connected to the winding motor 864, which is made of servo motor and is electrically connected to the external control circuit. The outer surface of the winding motor 864 is fixedly connected to the outer surface of the support block 4, and the output end of the winding motor 864 is rotatably connected to the body of the support block 4.

[0027] Telescopic rods 865 are provided on both sides of the outer surface of the connecting plate 85. The output end of the telescopic rod 865 adopts multi-stage telescopic, which can provide a large movement space for the roll block 81. The two ends of the telescopic rod 865 are fixedly connected to the lugs 866. The lugs 866 play a fixed connection role, which can guide and limit the movement of the connecting plate 85 by the telescopic rod 865. The outer surface of one lug 866 is fixedly connected to the outer surface of the connecting plate 85, and the outer surface of the other lug 866 is fixedly connected to the inside of the inner cavity 5.

[0028] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0029] Working principle: First, according to the actual installation requirements of the electrical components, the connecting wire is inserted into the inner cavity 5 through the corresponding wire hole 6, and then the end of the connecting wire is exposed on the side of the support block 4 facing away from the clamping wheel 11. Next, the end of the connecting wire is connected to the connection point of the electrical component. Then, the redundant part of the connecting wire is manually stretched through the opening of the inner cavity 5, so that the electrical component and the side of the support block 4 facing away from the clamping wheel 11 are attached and fixed. Then, while manually stretching the redundant part of the connecting wire, the redundant part is stretched symmetrically and taut along the middle. At the same time, the output end of the push-pull rod 73 extends and drives the clamping plate 71 to approach the connecting wire. During this process, the slider 75 inside the groove 74 slides along the slide rail 76, so that the corresponding size clamping groove 72 on the clamping plate 71 faces the connecting wire. When the two clamping plates 71 approach each other, the connecting wire is clamped at the wire hole 6 on both sides through the corresponding size clamping groove 72. At the same time, the winding motor 864 drives the drum 861 to rotate to release the traction rope through the upper and lower fixed pulleys 8. The connection between 62 and the lifting ring 863 allows the connecting plate 85 to descend inside the inner cavity 5 via the winding block 81 and the support plate 82. During the descent, the upper winding plate 83 extends through the corresponding adjustment rod 84 and rotates through the hinge, positioning itself between the two sides of the redundant part of the connecting line. It then abuts against the middle of the redundant part of the connecting line as it descends. During movement, the output end of the telescopic rod 865 enhances the stability and force bearing capacity of the connecting plate 85 through multi-stage telescopic extension and the action of the fixing lug 866. Then, the other winding plate 83 rotates to make the two winding plates 83 parallel to each other, thereby clamping the middle of the redundant part of the connecting line. Next, the rotating motor 88 drives the winding plate 83 to rotate through the winding block 81 and the support plate 82 to wind the redundant part of the connecting line. At the same time, the winding motor 864 drives the drum 861 to reverse and wind the traction rope, thereby causing the winding block 81 to rise inside the inner cavity 5, so that the redundant part of the connecting line can be neatly stored inside the inner cavity 5. While the coil plate 83 is winding and storing the redundant part of the connecting wire, the clamping wheel 11 on the support block 4 is placed inside the sliding groove 9 on the crossbar 3, and the shaft end of the clamping wheel 11 is connected to the connecting groove 10, so that the surface of the support block 4 is in contact with the crossbar 3. Then, the support block 4 is pushed to slide along the crossbar 3 into the interior of the box 1. When the clamping wheel 11 moves to the corresponding vertical bar 2 and descends, the support block 4 is pushed to slide upward so that the clamping wheel 11 is connected to the sliding groove 9 on the corresponding vertical bar 2, so that the support block 4 rises along the vertical bar 2. During the rising process, the locking rod 13 on the support block 4 abuts against the lower clamping bar 14 through the chamfer, so that the clamping bar 14 slides along the spring rod 15 axially and compresses the output end of the spring rod 15. After the locking rod 13 disengages from the chamfer, the output end of the spring rod 15 rebounds and drives the lower clamping bar 14 to reset. Thus, the support block 4 is fixed by the abutment of the upper and lower clamping bars 14 and the upper and lower sides of the locking rod 13. When it is necessary to disassemble the electrical components, firstly, the electromagnet 16 is activated to attract the lower clamp 14, causing it to disengage from the clamp 13. Then, the output end of the push-pull rod 73 on the side away from the electrical components retracts, causing the corresponding clamp 71 to reset and disengage from the side of the redundant part of the connecting wire. Next, the support block 4 moves in the opposite direction, causing the electrical components to move from the inside of the housing 1 to the outside. During the movement, the drum 861 rotates to release the traction rope, causing the drum block 81 to move inside the inner cavity 5. At the same time, the motor 88 rotates to drive the drum plate 83 to reverse and release the redundant part of the connecting wire. Then, the exposed electrical components can be disassembled, maintained, or replaced. If it is necessary to maintain or test the connecting wire, the clamp 71 that has not been loosened resets and disengages from the other side of the redundant part of the connecting wire. Then, the end of the connecting wire can be pulled out for maintenance or testing.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ring main unit that is easy to wire and maintain, comprising a housing (1), characterized in that: The box (1) is equipped with a maintenance mechanism, which includes vertical bars (2) and horizontal bars (3) that are fixed perpendicularly to each other. The outer surfaces of the vertical bars (2) and horizontal bars (3) are fixedly connected to the interior of the box (1). A support block (4) is movably connected to the outer surface of the vertical bar (2). An inner cavity (5) is opened at the bottom of the support block (4). A wire hole (6) communicating with the interior of the inner cavity (5) is opened on the outer surface of the support block (4). A sliding groove (9) communicating with each other is opened inside the vertical bars (2) and horizontal bars (3). A connecting groove (10) communicating with the sliding groove (9) is opened on the outer surface of the vertical bars (2) and horizontal bars (3). The sliding groove (9) on the vertical bar (2) is inside the sliding groove (9). A clamping wheel (11) is movably connected. The shaft end of the clamping wheel (11) is movably connected to the inside of the connecting groove (10). The shaft end of the clamping wheel (11) is rotatably connected to the outer surface of the support block (4). A fixed strip (12) is fixedly connected to the inside of the sliding groove (9) on the crossbar (3). The outer surface of the clamping wheel (11) is movably connected to the outer surface of the fixed strip (12). Both sides of the outer surface of the support block (4) are fixedly connected to the clamping rod (13). The upper and lower sides of the clamping rod (13) are movably connected to the clamping strip (14). The outer surface of the upper clamping strip (14) is fixedly connected to the inside of the box (1). The lower clamping strip (14) abuts and clamps the clamping rod (13) by sliding inside the box (1).

2. The ring main unit for easy wiring and maintenance according to claim 1, characterized in that: One end of the lower clamping bar (14) is fixedly connected to the outer surface of the upper clamping bar (14) via a spring rod (15). The bottom of the other end of the lower clamping bar (14) is chamfered. The locking rod (13) pushes the lower clamping bar (14) to slide by abutting against the chamfer. The lower clamping bar (14) is magnetically connected to an electromagnet (16). The outer surface of the electromagnet (16) is embedded and fixedly connected to the outer surface of the upper clamping bar (14).

3. A ring main unit for easy wiring and maintenance according to claim 1, characterized in that: The inner cavity (5) is provided with a wire clamping assembly (7), which includes a clamping plate (71). The clamping plate (71) is located on both sides of the edge of the wire hole (6). The outer surfaces of the clamping plates (71) on both sides are movably connected to the interior of the inner cavity (5). A clamping groove (72) is provided on the side of the outer surfaces of the clamping plates (71) that are close to each other. The interior of the clamping groove (72) is connected to the interior of the wire hole (6). A push-pull rod (73) is provided on the side of the outer surfaces of the clamping plates (71) that are far apart from each other. One end of the push-pull rod (73) on both sides is fixedly connected to the interior of the inner cavity (5).

4. A ring main unit for easy wiring and maintenance according to claim 3, characterized in that: The outer surfaces of the two clamps (71) on opposite sides are provided with grooves (74). Sliders (75) are fixedly connected inside the grooves (74) on both sides. Slide rails (76) are slidably connected to the outer surfaces of the sliders (75) on both sides. The outer surfaces of the slide rails (76) on both sides are slidably connected to the interior of the grooves (74) on both sides. The outer surfaces of the slide rails (76) on both sides are fixedly connected to the output ends of the push-pull rods (73) on both sides.

5. A ring main unit for easy wiring and maintenance according to claim 1, characterized in that: The inner cavity (5) is provided with a winding assembly (8), which includes a winding block (81). The outer surface of the winding block (81) is movably connected to the interior of the inner cavity (5). A T-shaped support plate (82) is fixedly connected to one side of the outer surface of the winding block (81). Both sides of the outer surface of the support plate (82) are hinged with winding plates (83). The outer surfaces of the winding plates (83) on both sides are rotatably connected with adjusting rods (84). One end of the adjusting rods (84) on both sides is rotatably connected to the outer surface of the support plate (82).

6. A ring main unit for easy wiring and maintenance according to claim 5, characterized in that: The outer surface of the roll block (81) is movably connected to a connecting plate (85). The outer surface of the connecting plate (85) is movably connected to the interior of the inner cavity (5). A groove (87) is provided on the other side of the outer surface of the roll block (81). A rotating motor (88) is provided inside the groove (87). The output end of the rotating motor (88) is fixedly connected to the interior of the groove (87). The outer surface of the rotating motor (88) is fixedly connected to the outer surface of the connecting plate (85).

7. A ring main unit for easy wiring and maintenance according to claim 6, characterized in that: A traction unit (86) is provided on the outside of the connecting plate (85). The traction unit (86) includes a drum (861). The drum (861) is located on both sides of the outer surface of the block (81). The outer surface of the drum (861) is rotatably connected to the inside of the inner cavity (5). A traction rope is wound around the outer surface of the drum (861). Two sets of fixed pulleys (862) are movably connected to the outer surface of the traction rope. The outer surfaces of the two sets of fixed pulleys (862) are fixedly connected to the inside of the inner cavity (5). A lifting ring (863) is wound around one end of the traction rope. The outer surface of the lifting ring (863) is fixedly connected to the top of the connecting plate (85). A winding motor (864) is fixedly connected to the outer surface of the drum (861). The outer surface of the winding motor (864) is fixedly connected to the outer surface of the support block (4). The output end of the winding motor (864) is rotatably connected to the body of the support block (4).

8. A ring main unit for easy wiring and maintenance according to claim 7, characterized in that: Telescopic rods (865) are provided on both sides of the outer surface of the connecting plate (85). The two ends of the telescopic rods (865) are fixedly connected to lugs (866). The outer surface of one lug (866) is fixedly connected to the outer surface of the connecting plate (85), and the outer surface of the other lug (866) is fixedly connected to the inside of the inner cavity (5).

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