A solid-insulated compact ring main unit

Abstract

The present application relates to a solid-insulated compact ring main cabinet, belonging to the technical field of ring main cabinets. It includes a cabinet body and a cabinet door arranged on the cabinet body. A substrate is fixedly provided on the bottom side of the cabinet body, and a plurality of moving wheels are fixedly provided on the side of the substrate away from the cabinet body; a plurality of support rods are slidably arranged on the substrate in the vertical direction. An adjusting member for controlling the downward movement of the support rods and a reset member for driving the support rods to move upward and reset are provided above the substrate. The lower end of the support rod can move downward to a state flush with the lowest point of the moving wheels; in the present application, when the ring main cabinet is installed inside the box-type substation, the user can drive the lower end of the support rod to move downward to a state flush with the lowest point of the moving wheels through the adjusting member; when it is necessary to move the ring main cabinet out of the box-type substation for maintenance, the control rod is released from pressing the support rod, and then the support rod is moved upward through the reset member. At this time, only the moving wheels are in contact with the ground inside the box-type substation, which is convenient for moving the ring main cabinet out.

Description

Technical Field

[0001] The present application relates to the technical field of ring main unit enclosures, and particularly to a solid-insulated compact ring main unit enclosure. Background Art

[0002] A solid-insulated ring main unit, as a power equipment using solid insulation materials as the core insulation medium, demonstrates its unique advantages. By encapsulating key conductive circuits such as vacuum interrupters and their conductive connections, disconnectors, earthing switches, main busbars, and branch busbars, either singly or in combination, with solid insulation media, modules with full insulation and full sealing characteristics are formed. These modules not only have clear functions but also can be recombined or expanded. Their surfaces are coated with conductive or semi-conductive shielding layers and can be directly grounded to ensure the safety of operators.

[0003] In terms of technical implementation, a solid-insulated ring main unit usually includes two major components: a cabinet body and a cabinet door. Inside the cabinet body, multiple functional areas such as a switch room, a fuse room, an operating mechanism room, and a protector room are carefully arranged, enabling key components such as disconnectors, fuses, protectors, and operating mechanisms to perform their respective functions and be installed in corresponding chambers, thus ensuring the stable operation of the equipment.

[0004] However, when a solid-insulated ring main unit is installed inside a box-type substation, its maintenance problem becomes prominent. Due to the limited space inside the box-type substation and the compact structure of the ring main unit, it is particularly inconvenient to perform maintenance on it. Especially in harsh environments, the maintenance cycle of the ring main unit often needs to be shortened to address potential safety hazards. However, removing the ring main unit from the box-type substation for separate maintenance is not only complex in operation but also difficult, which undoubtedly reduces the maintenance efficiency, increases the operation and maintenance costs, and there is room for improvement. Summary of the Invention

[0005] The purpose of the present application is to provide a solid-insulated compact ring main unit enclosure to solve the problem of low maintenance efficiency of the ring main unit installed inside a box-type substation in the above-mentioned related technologies.

[0006] A solid-insulated compact ring main unit enclosure provided by the present application adopts the following technical solutions:

[0007] A solid-insulated compact ring main unit enclosure includes a box body and a box door provided on the box body. A base plate is fixedly provided on the bottom side of the box body, and a plurality of moving wheels are fixedly provided on the side of the base plate away from the box body; a plurality of support rods are slidably provided on the base plate in the vertical direction, an adjusting member for controlling the downward movement of the support rods and a resetting member for driving the support rods to move upward and reset are provided above the base plate, and the lower end of the support rod can move downward to a state flush with the lowest point of the moving wheels.

[0008] By adopting the above technical solution, when the ring main unit box is installed inside the box-type substation, due to the combined setting of the moving wheels, adjusting members, resetting members and support rods, the user can drive the lower end of the support rod to move down to a state flush with the lowest point of the moving wheels through the adjusting member, thereby improving the corresponding installation stability at this time; when it is necessary to move the ring main unit box out of the box-type substation for maintenance, the control rod is released from pressing the support rod, and then the support rod is moved up by the resetting member. At this time, only the moving wheels are in contact with the ground inside the box-type substation, which is convenient for moving the ring main unit box out, reducing the corresponding time and improving the efficiency of moving the ring main unit box out for maintenance.

[0009] Optionally, accommodation notches are formed on two opposite vertical side surfaces of the base plate, and installation through holes for the support rods to pass through are formed on the inner wall of the base plate away from the box body at the accommodation notches; a baffle is fixedly arranged on the outer periphery of the support rod, and an installation sinking groove for the baffle to be placed and slide is formed on the upper side opening edge of the installation through hole. The resetting member includes a reset spring with two ends fixedly connected to the lower side of the baffle and the bottom side of the installation sinking groove respectively.

[0010] By adopting the above technical solution, the user can control the downward movement of the support rod by operating the adjusting member, and the support rod is moved up and reset by the elastic force of the reset spring, without complex operation steps, and the operation is more convenient; the design of the baffle on the outer periphery of the support rod and the installation sinking groove not only provides an installation space for the reset spring, but also increases the structural safety. The baffle can prevent the reset spring from popping out or being damaged during operation, improving the safety of the equipment.

[0011] Optionally, a guiding inclined surface is arranged on the upper edge of the support rod. The adjusting member includes an adjusting rod slidably arranged in the accommodation notch and a control member for driving the adjusting rod to reciprocate. An adjusting convex block is fixedly arranged on the outer periphery of the adjusting rod; the adjusting convex block can slide along the guiding inclined surface to above the installation through hole, and then press the support rod downward.

[0012] By adopting the above technical solution, the arrangement of the guiding inclined surface enables the adjusting convex block to more easily slide along the inclined surface to above the installation through hole, so as to press the support rod downward.

[0013] Optionally, the control member includes a control spring installed in the accommodation notch and two control rods slidably arranged side by side in the vertical direction on the side surface of the box body where the box door is installed; the control spring is used to press one end of the adjusting rod so that the other end protrudes from the accommodation notch. A guiding inclined surface is arranged on the edge of the end of the adjusting rod away from the control spring; when the control rod moves down to be able to press the protruding part of the adjusting rod along the guiding inclined surface, the adjusting rod is driven to slide towards the end close to the control spring.

[0014] By adopting the above technical solution, the introduction of the control spring realizes the automatic extrusion of the adjusting rod, enabling one end of the adjusting rod to protrude from the accommodating notch, facilitating interaction with the control rod. This design reduces the complexity of manual operation and improves the convenience of use.

[0015] Optionally, a guiding block is fixedly provided on the outer side surface of the box body, and a guiding through hole for the control rod to pass through is provided on the guiding block; a locking through hole is provided on the guiding block, and a plurality of locking screw holes capable of coinciding with the locking through hole are provided on the control rod. A locking bolt is provided outside the box body and is screwed into the locking screw hole after passing through the locking through hole.

[0016] By adopting the above technical solution, the combined design of the guiding block and the control rod enables the control rod to remain stable during movement and is not prone to deviation or shaking; when the control rod is adjusted to the required position, it can be fixed on the guiding block through the locking bolt to prevent the control rod from accidentally moving or loosening. This design improves the safety of the equipment and reduces the potential risks caused by the movement of the control rod.

[0017] Optionally, the locking bolt is a wing nut.

[0018] By adopting the above technical solution, due to its unique wing-shaped head design, the wing nut enables users to easily tighten and loosen the operation without tools. This convenience is particularly important in emergency situations or when the locking state of the control rod needs to be frequently adjusted, saving a large amount of time and effort.

[0019] Optionally, the two control rods are located on the opposite side surfaces of the box door. Limiting blocks are fixedly provided at the upper ends of the two control rods. A flexible traction belt for connecting the two limiting blocks is provided outside the box body, and the flexible traction belt is detachably connected to the limiting blocks.

[0020] By adopting the above technical solution, the limiting blocks and the flexible traction belt together form a "handle", which can not only simultaneously pull the two control rods to slide synchronously through the "handle", but also pull the overall moving ring network box through the "handle"; this design increases the moving flexibility of the ring network box and makes it more suitable for use in environments where frequent movement is required; when the box door needs to be opened, the flexible traction belt needs to be disassembled, so the "handle" can also prevent the box door from being opened accidentally, strengthening the corresponding protection performance.

[0021] Optionally, spring hooks are fixedly provided at both ends of the flexible traction belt, and hanging rings for the spring hooks to be snapped into are fixedly provided on the side surface of the limiting block away from the control rod.

[0022] By adopting the above technical solution, the spring hook can be easily snapped into the hanging loop and can be easily released when needed. This design ensures the safety of the user during the operation process and avoids accidental risks caused by loose connections.

[0023] Optionally, a heat dissipation opening is provided on the cabinet door, and an adapter plate for connecting two control rods is provided outside the cabinet body. A plugging through hole is provided on the adapter plate; two opposite edges of the adapter plate are detachably connected to the two control rods, and the plugging through hole is misaligned with the heat dissipation opening when the adapter plate moves upward with the limit block and coincides with the heat dissipation opening when the adapter plate moves downward with the limit block.

[0024] By adopting the above technical solution, due to the setting of the adapter plate, when the two limit blocks move up and down, they will drive the adapter plate to move up and down synchronously; when the adapter plate moves upward with the limit block (i.e., when the ring network cabinet needs to be removed from the box transformer), the plugging through hole is misaligned with the heat dissipation opening, and at this time the heat dissipation opening is in a plugged state, improving the protection performance at this time; when the adapter plate moves downward with the limit block (i.e., during normal application in the box transformer), the plugging through hole coincides with the heat dissipation opening, and at this time normal heat dissipation can be achieved.

[0025] Optionally, an adapter bump is fixedly provided on the side surface of the adapter plate close to the control rod, and a limit notch for inserting the adapter bump is provided on the side surfaces of the two control rods close to each other; an elastic clamping member is provided on the adapter bump, and a positioning groove for the elastic clamping member to be clamped into is provided on the inner wall of the limit notch.

[0026] By adopting the above technical solution, when the adapter plate is installed between the two control rods, the adapter bump on the adapter plate is snapped into the corresponding limit notch, and at this time the elastic clamping member on the adapter bump is snapped into the corresponding positioning groove, realizing the quick installation of the adapter plate and also facilitating subsequent disassembly.

[0027] In summary, the present application includes the following beneficial technical effects:

[0028] When the ring network cabinet is installed inside the box transformer, the user can drive the lower end of the support rod to move downward to a state flush with the lowest point of the moving wheel through the adjusting member, improving the corresponding installation stability at this time; when it is necessary to remove the ring network cabinet from the box transformer for maintenance, the control rod is released from pressing on the support rod, and then the support rod is moved upward through the reset member. At this time, only the moving wheel abuts against the ground inside the box transformer, facilitating the removal of the ring network cabinet, reducing the corresponding time, and improving the efficiency of removing the ring network cabinet for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0030] Figure 1 is the overall structural schematic diagram of the embodiment of the present application;

[0031] Figure 2 is the exploded structural schematic diagram showing the installation distribution of the substrate and the adjusting member in the embodiment of the present application;

[0032] Figure 3 is the partial sectional structural schematic diagram showing the installation cooperation of the support rod in the embodiment of the present application;

[0033] Figure 4 is the partial sectional structural schematic diagram showing the installation cooperation of the adjusting rod and the control rod in the embodiment of the present application;

[0034] Figure 5 is the exploded structural schematic diagram showing the installation distribution of the control rod and the connecting plate in the embodiment of the present application;

[0035] Figure 6 is the partial sectional structural schematic diagram showing the installation cooperation of the connecting plate in the embodiment of the present application;

[0036] Figure 7 is Figure 6 the enlarged schematic diagram of part A in

[0037] Figure 8 is Figure 6 the enlarged schematic diagram of part B in

[0038] In the figure, 1. box body; 11. guide block; 111. guide through hole; 12. locking bolt; 121. wing bolt; 13. flexible traction belt; 14. spring hook; 2. box door; 21. heat dissipation port; 3. substrate; 31. accommodation notch; 32. installation through hole; 321. installation counterbore; 4. moving wheel; 5. support rod; 51. baffle; 52. guiding inclined surface; 6. adjusting member; 61. adjusting rod; 611. adjusting convex block; 612. guiding inclined surface; 62. control member; 621. control spring; 622. control rod; 6221. limiting notch; 6222. positioning groove; 63. limiting block; 631. hanging ring; 7. reset member; 71. reset spring; 8. connecting plate; 81. plugging through hole; 82. connecting convex block; 821. placing groove; 83. elastic clamping member; 831. compression spring; 832. arc convex block. Specific embodiments

[0039] The present application will be further described in detail below in conjunction with all the accompanying drawings.

[0040] Embodiment:

[0041] Referring to Figure 1 and Figure 2 , a solid-insulated compact ring main unit box includes a box body 1 and a box door 2 provided on the box body 1. One side of the box door 2 is rotatably connected to the box body 1, and the other side of the box door 2 is detachably connected to the box body 1 through a conventional lock structure; a substrate 3 is fixedly provided on the bottom side of the box body 1, and four moving wheels 4 with a braking and locking function are fixedly provided on the side surface of the substrate 3 away from the box body 1; four support rods 5 are slidably provided on the substrate 3 in the vertical direction, and an adjusting member 6 for driving the support rods 5 to move downward and a reset member 7 for driving the support rods 5 to move upward and reset are provided above the substrate 3;

[0042] When the ring main unit box is installed inside the box-type substation, the adjusting member 6 is used to drive the lower ends of the support rods 5 to move downward to a state flush with the lowest part of the moving wheels 4; when it is necessary to remove the ring main unit box from the box-type substation for maintenance, the adjusting member 6 is used to release the extrusion on the support rods 5, and then the support rods 5 are moved upward by the reset member 7. At this time, only the moving wheels 4 are in contact with the ground inside the box-type substation, which is convenient for removing the ring main unit box.

[0043] Referring to Figure 2 and Figure 3 , accommodation notches 31 are formed on two opposite vertical side surfaces of the substrate 3. An installation through hole 32 for the support rod 5 to penetrate is formed on the inner wall of the substrate 3 away from the box body 1 in the accommodation notch 31, so as to realize the vertical sliding limit of the support rod 5;

[0044] A baffle 51 is fixedly provided on the outer periphery of the support rod 5, and an installation sink 321 for the baffle 51 to be placed and slide is formed on the upper side opening edge of the installation through hole 32. The reset member 7 includes a reset spring 71 with two ends respectively fixed to the lower side of the baffle 51 and the bottom side of the installation sink 321.

[0045] Referring to Figure 2 and Figure 3 , a guiding inclined surface 52 is provided on the upper edge of the support rod 5. The adjusting member 6 includes an adjusting rod 61 slidably provided in the accommodation notch 31 and a control member 62 for driving the adjusting rod 61 to reciprocate. An adjusting convex block 611 is integrally formed on the outer periphery of the adjusting rod 61;

[0046] The user can drive the adjusting rod 61 to slide reciprocally. In this process, the adjusting convex block 611 can slide along the guiding inclined surface 52 to the upper side of the installation through hole 32, and then press the support rod 5 downward, so that the lower end of the support rod 5 is in contact with the ground.

[0047] Referring to Figure 2 , Figure 3 and Figure 4, the control member 62 includes a control spring 621 installed in the accommodation notch 31 and two control rods 622 slidably arranged side by side in the vertical direction on the side of the box body 1 where the box door 2 is installed; the control spring 621 is used to squeeze one end of the adjusting rod 61 so that the other end of the adjusting rod 61 protrudes from the accommodation notch 31, and a guiding inclined surface 612 is provided at the edge of the end of the adjusting rod 61 away from the control spring 621;

[0048] When the control rod 622 moves downward, it can squeeze the protruding part of the adjusting rod 61 along the guiding inclined surface 612, drive the adjusting rod 61 to slide towards the end close to the control spring 621, and then make the adjusting convex block 611 slide along the guiding inclined surface 52 to the upper side of the installation through hole 32; when the control rod 622 moves upward, the lower end of the control rod 622 is misaligned with the adjusting rod 61. At this time, under the action of the control spring 621, the adjusting rod 61 slides in the direction away from the control spring 621 until the adjusting convex block 611 on the adjusting rod 61 is misaligned with the upper end of the support rod 5.

[0049] Refer to Figure 5 and Figure 6 , a guiding block 11 is fixedly arranged on the outer side of the box body 1, and a guiding through hole 111 for the control rod 622 to pass through is opened in the guiding block 11; a locking through hole is opened in the guiding block 11, and a plurality of locking screw holes that can coincide with the locking through hole are uniformly opened along the length direction of the control rod 622. A locking bolt 12 is arranged outside the box body 1 and screwed into the locking screw hole after passing through the locking through hole, and the locking bolt 12 is a butterfly bolt 121;

[0050] The up and down sliding of the control rod 622 is limited by the guiding block 11. When the control rod 622 slides to a certain height, the user can manually tighten or loosen the locking bolt 12, that is, use the locking bolt 12 to fix the control rod 622 in this state, so as to realize the sliding and adjustment of the control rod 622.

[0051] Refer to Figure 6 and Figure 7 , the two control rods 622 are located on the opposite side surfaces of the box door 2, and limiting blocks 63 are integrally formed at the upper ends of the two control rods 622. A flexible traction belt 13 for connecting the two limiting blocks 63 is arranged outside the box body 1, and spring hooks 14 are fixedly arranged at both ends of the flexible traction belt 13. Hanging rings 631 for the spring hooks 14 to be clamped into are fixedly arranged on the side surfaces of the limiting blocks 63 away from the control rods 622.

[0052] The flexible traction belt 13 is detachably connected to the limiting block 63, so that the limiting block 63 and the flexible traction belt 13 together form a "handle", which can not only simultaneously pull the two control rods 622 to slide up and down through the "handle", but also pull the overall moving of the mesh box through the "handle".

[0053] Refer to Figure 5And Figure 6 A heat dissipation opening 21 is provided on the box door 2, and an adapter plate 8 for connecting two control rods 622 is provided outside the box body 1. The two side edges of the adapter plate 8 are detachably connected to the two control rods 622. A plugging through hole 81 is provided on the adapter plate 8. When the two limit blocks 63 move up and down, the adapter plate 8 will be driven to move up and down synchronously;

[0054] When the adapter plate 8 moves up with the limit block 63, the plugging through hole 81 is misaligned with the heat dissipation opening 21, and at this time the heat dissipation opening 21 is in a plugged state; when the adapter plate 8 moves down with the limit block 63, the plugging through hole 81 coincides with the heat dissipation opening 21, and at this time normal heat dissipation can be carried out.

[0055] Refer to Figure 6 And Figure 8 On the side surface of the adapter plate 8 close to the control rod 622, an adapter convex block 82 is fixedly provided. On the side surfaces of the two control rods 622 close to each other, a limit notch 6221 for inserting the adapter convex block 82 is provided; an elastic clamping member 83 is provided on the adapter convex block 82, and the elastic clamping member 83 includes a compression spring 831 and an arc-shaped convex block 832;

[0056] A placement groove 821 for placing the compression spring 831 and the arc-shaped convex block 832 is provided on the adapter convex block 82. The compression spring 831 squeezes one side of the arc-shaped convex block 832, so that a part of the arc-shaped convex block 832 protrudes from the opening of the placement groove 821. The outer side surface of the protruding part is an arc surface, and the arc length corresponding to the arc surface is a minor arc. A positioning groove 6222 for the elastic clamping member 83 to be inserted is provided on the inner wall of the limit notch 6221.

[0057] The implementation principle of the embodiment of the present application is as follows:

[0058] When the ring network box is installed inside the box transformer, the handle formed by the limit block 63 and the flexible traction belt 13 moves down as a whole, and then drives the two control rods 622 to move down synchronously, so that the control rod 622 squeezes the protruding part of the adjusting rod 61 along the guiding inclined surface 612, driving the adjusting rod 61 to slide towards the end close to the control spring 621, and then making the adjusting convex block 611 slide along the guiding inclined surface 52 to above the installation through hole 32, and then pressing down on the support rod 5, so that the lower end of the support rod 5 abuts against the ground; at this time, the plugging through hole 81 coincides with the heat dissipation opening 21, and at this time normal heat dissipation can be carried out;

[0059] When it is necessary to move the ring network cabinet out of the box transformer, the two control rods 622 are driven to move upward as a whole. At this time, the blocking through hole 81 is misaligned with the heat dissipation port 21, and the heat dissipation port 21 is in a blocked state; the lower end of the control rod 622 is misaligned with the adjusting rod 61. At this time, under the action of the control spring 621, the adjusting rod 61 slides in a direction away from the control spring 621 until the adjusting convex block 611 on the adjusting rod 61 is misaligned with the upper end of the support rod 5. Then, under the action of the return spring 71, the support rod 5 moves upward, so that there is a gap between the lower end of the support rod 5 and the ground.

[0060] Unless otherwise defined, the terms or scientific terms used in this application shall have the ordinary meaning understood by those of ordinary skill in the field to which this application belongs. The words "first", "second", "third" and similar words used in the text of this application do not denote any order, quantity or importance, but are only used to distinguish different components. Words such as "a" or "an" do not denote a quantity limitation either, but mean that there is at least one. Words such as "including" or "comprising" mean that the elements or objects appearing before "including" or "comprising" cover the elements or objects listed after "including" or "comprising" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationships may also change accordingly.

[0061] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same parts are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape and principle of this application shall be covered within the protection scope of this application.

Claims

1. A solid insulated compact ring main box, comprising a box body (1) and a box door (2) arranged on the box body (1), characterized in that: A base plate (3) is fixedly arranged on the bottom side of the box body (1), and a plurality of moving wheels (4) are fixedly arranged on the side of the base plate (3) away from the box body (1); a plurality of support rods (5) are slidably arranged on the base plate (3) in the vertical direction, and an adjusting member (6) for controlling the support rods (5) to move downward and a reset member (7) for driving the support rods (5) to move upward and reset are arranged above the base plate (3); the lower end of the support rod (5) can be moved downward to a state where it is flush with the lowest point of the moving wheel (4); The base plate (3) is provided with accommodating notches (31) on two opposite vertical side surfaces, and a mounting through hole (32) for the support rod (5) to pass through is provided on the inner wall of the base plate (3) away from the accommodating notch (31) and the box body (1); a baffle (51) is fixedly provided on the outer periphery of the support rod (5), and a mounting recess (321) for the baffle (51) to be placed and slide is provided on the upper opening edge of the mounting through hole (32), and the reset member (7) comprises a reset spring (71) whose two ends are respectively fixedly connected to the lower side of the baffle (51) and the bottom side of the mounting recess (321); The upper edge of the support rod (5) is provided with a guiding inclined surface (52), the adjusting member (6) comprises an adjusting rod (61) slidably arranged in the accommodating notch (31), and a control member (62) driving the adjusting rod (61) to move back and forth, and an adjusting protrusion (611) is fixedly arranged on the outer periphery of the adjusting rod (61); the adjusting protrusion (611) can slide along the guiding inclined surface (52) to the upper side of the mounting through hole (32), thereby pressing the support rod (5) downward; The control member (62) comprises a control spring (621) installed in the receiving notch (31), and two control rods (622) slidably arranged side by side in a vertical direction on the side of the box body (1) on which the box door (2) is installed; the control spring (621) is used to squeeze one end of the adjustment rod (61) so that the other end protrudes out of the receiving notch (31); the edge of the end of the adjustment rod (61) away from the control spring (621) is provided with a guide inclined surface (612); the control rod (622) moves downward until it can squeeze the protruding part of the adjustment rod (61) along the guide inclined surface (612), thereby driving the adjustment rod (61) to slide toward the end close to the control spring (621); A guide block (11) is fixedly provided on the outer side surface of the box body (1), and a guide through hole (111) is provided on the guide block (11) for the control rod (622) to pass through; a locking through hole is provided on the guide block (11), and a plurality of locking screw holes that can overlap with the locking through hole are provided on the control rod (622); a locking bolt (12) is provided on the outside of the box body (1) and passes through the locking through hole and is screwed into the locking screw hole; The two control rods (622) are located on two opposite sides of the box door (2); the upper ends of the two control rods (622) are fixedly provided with limit blocks (63); the outside of the box body (1) is provided with a flexible traction belt (13) for connecting the two limit blocks (63); the flexible traction belt (13) is detachably connected to the limit blocks (63); The box door (2) is provided with a heat dissipation port (21); a connecting plate (8) for connecting two control rods (622) is provided on the outside of the box body (1); a blocking through hole (81) is provided on the connecting plate (8); two opposite edges of the connecting plate (8) are detachably connected to the two control rods (622); the blocking through hole (81) is misaligned with the heat dissipation port (21) when the connecting plate (8) moves upward with the limit block (63), and overlaps with the heat dissipation port (21) when the connecting plate (8) moves downward with the limit block (63).

2. A solid insulated compact ring mainframe according to claim 1, characterized in that: The locking bolt (12) is a butterfly bolt (121).

3. A solid insulated compact ring mainframe according to claim 1, characterized in that: Spring hooks (14) are fixedly provided at both ends of the flexible traction belt (13), and a hanging ring (631) for the spring hook (14) to be clamped is fixedly provided on the side of the limit block (63) away from the control rod (622).

4. A solid insulated compact ring mainframe according to claim 1, characterized in that: A connecting protrusion (82) is fixedly provided on the side of the connecting plate (8) close to the control rod (622), and a limiting notch (6221) for the connecting protrusion (82) to be inserted is provided on the sides of the two control rods (622) close to each other; The engaging protrusion (82) is provided with an elastic clamping piece (83), and the inner wall of the limiting notch (6221) is provided with a positioning groove (6222) for the elastic clamping piece (83) to be clamped into.

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