Solid insulation compact type ring main unit

Abstract

The invention relates to a solid insulation compact type ring main unit, and relates to the technical field of ring main units, the solid insulation compact type ring main unit comprises a box body and a box door arranged on the box body, a base plate is fixedly arranged on the bottom side of the box body, and a plurality of moving wheels are fixedly arranged on the side face, away from the box body, of the base plate; a plurality of supporting rods are arranged on the base plate in the vertical direction in a sliding mode, an adjusting piece for controlling the supporting rods to move downwards and a reset piece for driving the supporting rods to move upwards to reset are arranged above the base plate, and the lower ends of the supporting rods can move downwards to be flush with the lowest positions of the moving wheels. According to the invention, when the ring main unit is installed in the box transformer substation, a user can drive the lower end parts of the supporting rods to move downwards to be flush with the lowest positions of the moving wheels through the adjusting parts; when the ring main unit needs to be moved out of the box transformer substation to be overhauled, the control rod relieves extrusion on the supporting rod, then the supporting rod is moved upwards through the reset piece, only the moving wheels abut against the ground in the box transformer substation at the moment, and the ring main unit can be moved out conveniently.

Description

Technical Field

[0001] The present application relates to the technical field of ring main boxes, and in particular to a solid-insulated compact ring main box. Background Art

[0002] Solid insulated ring main unit, as a power equipment that uses solid insulating material as the core insulating medium, has demonstrated its unique advantages. The equipment forms a fully insulated and fully sealed module by encapsulating the key conductive circuits such as vacuum interrupter and its conductive connection, disconnector, grounding switch, main bus and branch bus, either singly or in combination, with solid insulating medium. These modules not only have clear functions, but can also be combined or expanded again. Their surfaces are also coated with a conductive or semi-conductive shielding layer and can be directly grounded, ensuring the safety of operators.

[0003] In terms of technical implementation, solid insulated ring main unit usually consists of two major parts: the cabinet body and the cabinet door. The cabinet body is carefully arranged with multiple functional areas such as the switch room, fuse room, operating mechanism room and protector room, so that key components such as disconnectors, fuses, protectors and operating mechanisms can perform their respective functions and be installed in corresponding chambers, thus ensuring the stable operation of the equipment.

[0004] However, when the solid-insulated ring main unit is installed inside the box-type substation, its maintenance problem becomes prominent. Due to the limited internal space of the box-type substation and the compact structure of the ring main unit, it is particularly inconvenient to maintain it. Especially in harsh environments, the maintenance cycle of the ring main unit often needs to be shortened to deal with potential safety hazards. However, removing the ring main unit from the box-type substation for separate maintenance is not only complicated but also difficult, which undoubtedly reduces the maintenance efficiency and 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 box to solve the problem of low maintenance efficiency of the ring main cabinet installed in the box-type substation in the above-mentioned related technology.

[0006] The solid insulation compact ring network box provided in this application adopts the following technical solution: A solid insulated compact ring network box comprises a box body and a box door arranged on the box body, a base plate is fixedly arranged on the bottom side of the box body, and a plurality of movable wheels are fixedly arranged on the side of the base plate away from the box body; a plurality of support rods are slidably arranged on the base plate in the vertical direction, and an adjusting member for controlling the downward movement of the support rod and a reset member for driving the support rod to move upward and reset are arranged above the base plate, and the lower end of the support rod can be moved downward to a state flush with the lowest point of the movable wheel.

[0007] By adopting the above technical solution, when the ring network box is installed inside the box-type transformer, due to the combined arrangement of the moving wheel, the adjusting member, the resetting member and the support rod, the user can use the adjusting member to drive the lower end of the support rod to move down to a state flush with the lowest point of the moving wheel, thereby improving the corresponding installation stability; when the ring network box needs to be moved out of the box-type transformer for maintenance, the control rod releases the squeezing of the support rod, and then the support rod is moved up through the resetting member. At this time, only the moving wheel is in contact with the ground inside the box-type transformer, which facilitates the removal of the ring network box, reduces the corresponding time, and improves the efficiency of moving the ring network box out for maintenance.

[0008] Optionally, an accommodating notch is provided on two opposite vertical side surfaces of the base plate, and an installation through hole for the support rod to pass through is provided on the inner wall of the base plate away from the accommodating notch; a baffle is fixedly provided on the outer periphery of the support rod, and an installation groove for the baffle to be inserted and slide is provided on the upper opening edge of the installation through hole, and the reset component includes a reset spring with two ends respectively fixedly connected to the lower side of the baffle and the bottom side of the installation groove.

[0009] By adopting the above technical solution, the user can control the downward movement of the support rod by operating the adjustment member, and the support rod can be moved upward and reset by the elastic force of the reset spring, without complicated operation steps, and the operation is more convenient; the design of the baffle and the installation groove on the outer periphery of the support rod not only provides installation space for the reset spring, but also increases the safety of the structure. The baffle can prevent the reset spring from popping out or being damaged during operation, thereby improving the safety of the equipment.

[0010] Optionally, a guide bevel is provided on the upper end edge of the support rod, and the adjusting member includes an adjusting rod slidably arranged in the accommodating notch, a control member driving the adjusting rod to move back and forth, and an adjusting protrusion is fixedly provided on the outer periphery of the adjusting rod; the adjusting protrusion can slide along the guide bevel to above the mounting through hole, thereby squeezing the support rod downward.

[0011] By adopting the above technical solution, the setting of the guiding inclined surface enables the adjusting protrusion to slide along the inclined surface to the top of the mounting through hole more easily, thereby pressing the support rod downward.

[0012] Optionally, the control component includes a control spring installed in the accommodating notch and two control rods slidably arranged side by side in the vertical direction on the side of the box body where the door is installed; the control spring is used to squeeze one end of the adjusting rod so that the other end protrudes out of the accommodating notch, and the end edge of the adjusting rod away from the control spring is provided with a guide slope; the control rod moves downward to be able to squeeze the protruding part of the adjusting rod along the guide slope, driving the adjusting rod to slide toward the end close to the control spring.

[0013] By adopting the above technical solution, the introduction of the control spring realizes the automatic squeezing of the adjusting rod, so that one end of the adjusting rod can protrude from the accommodating notch, which is convenient for interaction with the control rod. This design reduces the complexity of manual operation and improves the convenience of use.

[0014] Optionally, a guide block is fixedly provided on the outer side surface of the box body, and a guide through hole is provided on the guide block for the control rod to pass through; a locking through hole is provided on the guide block, and a plurality of locking screw holes that can overlap with the locking through hole are provided on the control rod; a locking bolt is provided on the outside of the box body and passes through the locking through hole and is screwed into the locking screw hole.

[0015] By adopting the above technical solution, the matching design of the guide 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 desired position, it can be fixed to the guide block by a 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.

[0016] Optionally, the locking bolt is a butterfly bolt.

[0017] By adopting the above technical solution, the butterfly bolt, with its unique butterfly head design, allows users to easily tighten and loosen without tools. This convenience is particularly important in emergency situations or when the locking state of the control rod needs to be frequently adjusted, which can save a lot of time and energy.

[0018] Optionally, the two control rods are located on two opposite sides of the box door, and limit blocks are fixed to the upper ends of the two control rods. A flexible traction belt for connecting the two limit blocks is provided on the outside of the box body, and the flexible traction belt is detachably connected to the limit block.

[0019] By adopting the above technical solution, the limit block and the flexible traction belt together form a "handle", which can be used to simultaneously pull the two control rods to slide synchronously, and can also be used to pull the ring network box as a whole to move; this design increases the mobility of the ring network box, making it more suitable for use in environments that require frequent movement; when the box door needs to be opened, the flexible traction belt needs to be removed, so the "handle" can also prevent the box door from opening due to accidents, thereby enhancing the corresponding protective performance.

[0020] Optionally, spring hooks are fixedly provided at both ends of the flexible traction belt, and a hanging ring for the spring hook to be inserted is fixedly provided on the side of the limit block away from the control rod.

[0021] By adopting the above technical solution, the spring hook can be easily snapped into the hanging ring and can be easily released when needed. This design ensures the safety of the user during operation and avoids the accidental risk caused by loose connection.

[0022] Optionally, a heat dissipation port is provided on the box door, and a connecting plate for connecting two control rods is provided on the outside of the box body, and a blocking through hole is provided on the connecting plate; the two opposite edges of the connecting plate are detachably connected to the two control rods, and the blocking through hole is misaligned with the heat dissipation port when the connecting plate moves upward with the limit block, and coincides with the heat dissipation port when the connecting plate moves downward with the limit block.

[0023] By adopting the above technical solution, due to the setting of the connecting plate, the two limit blocks will drive the connecting plate to move up and down synchronously when they move up and down; when the connecting plate moves up with the limit blocks (that is, when the ring network box needs to be moved out of the box transformer), the blocked through hole and the heat dissipation port are misaligned, and the heat dissipation port is in a blocked state at this time, thereby improving the protection performance at this time; when the connecting plate moves down with the limit blocks (that is, when it is normally used in the box transformer), the blocked through hole coincides with the heat dissipation port, and normal heat dissipation can be achieved at this time.

[0024] Optionally, a connecting protrusion is fixedly provided on the side of the connecting plate close to the control rod, and a limiting notch for inserting the connecting protrusion is opened on the sides of the two control rods close to each other; an elastic clip is provided on the connecting protrusion, and a positioning groove for the elastic clip to be inserted is opened on the inner wall of the limiting notch.

[0025] By adopting the above technical solution, when the connecting plate is installed between the two control rods, the connecting protrusion on the connecting plate is inserted into the corresponding limiting notch. At this time, the elastic clip on the connecting protrusion is inserted into the corresponding positioning groove, thereby realizing the rapid installation of the connecting plate and facilitating subsequent disassembly.

[0026] In summary, this application includes the following beneficial technical effects: When the ring network box is installed inside the box-type transformer, the user can use the adjustment part to drive the lower end of the support rod to move down to a state flush with the lowest point of the moving wheel, thereby improving the corresponding installation stability; when the ring network box needs to be moved out of the box-type transformer for maintenance, the control rod releases the squeeze on the support rod, and then the support rod is moved up by the reset part. At this time, only the moving wheel is in contact with the ground inside the box-type transformer, which is convenient for moving the ring network box out, reducing the corresponding time and improving the efficiency of moving the ring network box out for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 It is a schematic diagram of the exploded structure of the installation distribution of the substrate and the adjustment member in the embodiment of the present application; Figure 3 It is a partial cross-sectional structural schematic diagram of the support rod installation and coordination in the embodiment of the present application; Figure 4 It is a partial cross-sectional structural schematic diagram of the installation and matching of the adjustment rod and the control rod in the embodiment of the present application; Figure 5 It is a schematic diagram of the exploded structure of the installation distribution of the control rod and the connecting plate in the embodiment of the present application; Figure 6 It is a partial cross-sectional structural schematic diagram of the embodiment of the present application embodying the installation and matching of the connecting plate; Figure 7 yes Figure 6 A magnified schematic diagram of part A; Figure 8 yes Figure 6 Schematic diagram of the enlarged portion B.

[0029] In the figure, 1, box body; 11, guide block; 111, guide through hole; 12, locking bolt; 121, butterfly bolt; 13, flexible traction belt; 14, spring hook; 2, box door; 21, heat dissipation port; 3, base plate; 31, accommodation gap; 32, installation through hole; 321, installation sink groove; 4, moving wheel; 5, support rod; 51, baffle; 52, guide slope; 6, adjustment member; 61, adjustment rod; 611 , adjusting protrusion; 612, guiding inclined plane; 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, blocking through hole; 82, connecting protrusion; 821, placement groove; 83, elastic clamping member; 831, compression spring; 832, arc-shaped protrusion. DETAILED DESCRIPTION

[0030] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0031] Example: Reference Figure 1 and Figure 2A solid insulated compact ring network box comprises a box body 1 and a box door 2 arranged on the box body 1, wherein 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 base plate 3 is fixedly arranged on the bottom side of the box body 1, and four moving wheels 4 with a brake locking function are fixedly arranged on the side of the base plate 3 away from the box body 1; four support rods 5 are slidably arranged on the base plate 3 in the vertical direction, and an adjusting member 6 for controlling the downward movement of the support rod 5 and a reset member 7 for driving the support rod 5 to move upward and reset are arranged above the base plate 3; When the ring network box is installed inside the box-type transformer, the lower end of the support rod 5 is driven by the adjusting member 6 to move down to a state flush with the lowest point of the moving wheel 4; when the ring network box needs to be moved out of the box-type transformer for maintenance, the adjusting member 6 releases the squeezing of the support rod 5, and then the support rod 5 is moved up by the resetting member 7. At this time, only the moving wheel 4 is in contact with the ground inside the box-type transformer, which facilitates the removal of the ring network box.

[0032] Reference Figure 2 and Figure 3 , two opposite vertical side surfaces of the base plate 3 are provided with accommodating notches 31, wherein 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, so as to realize the vertical sliding limit of the support rod 5; A baffle 51 is fixedly provided on the outer periphery of the support rod 5, and a mounting groove 321 is provided on the upper opening edge of the mounting through hole 32 for the baffle 51 to be placed and slide. The reset member 7 includes 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 groove 321.

[0033] Reference Figure 2 and Figure 3 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, a control member 62 driving the adjusting rod 61 to move back and forth, and an adjusting protrusion 611 is integrally formed on the outer periphery of the adjusting rod 61; The user can drive the adjustment rod 61 to slide back and forth, during which the adjustment protrusion 611 can slide along the guide slope 52 to the top of the installation through hole 32, and then press the support rod 5 downward to make the lower end of the support rod 5 abut against the ground.

[0034] Reference Figure 2 , Figure 3 and Figure 4 The control member 62 includes a control spring 621 installed in the receiving notch 31, and two control rods 622 slidably arranged side by side in the 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 press one end of the adjustment rod 61 so that the other end of the adjustment rod 61 protrudes out of the receiving notch 31, and the edge of the end of the adjustment rod 61 away from the control spring 621 is provided with a guide inclined surface 612; When the control rod 622 moves downward, it can squeeze the protruding part of the adjusting rod 61 along the guiding bevel 612, drive the adjusting rod 61 to slide toward the end close to the control spring 621, and then make the adjusting protrusion 611 slide along the guiding bevel 52 to above the mounting 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 protrusion 611 on the adjusting rod 61 is misaligned with the upper end of the support rod 5.

[0035] Reference Figure 5 and Figure 6 A guide block 11 is fixedly provided on the outer side of the box body 1, wherein 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 the control rod 622 is evenly provided with a plurality of locking screw holes that can overlap with the locking through hole along its length direction, and a locking bolt 12 is provided on the outside of the box body 1 and passes through the locking through hole and then screwed into the locking screw hole, and the locking bolt 12 is a butterfly bolt 121; The guide block 11 is used to limit the upward and downward sliding of the control rod 622. 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, thereby realizing the sliding and adjustment of the control rod 622.

[0036] Reference Figure 6 and Figure 7 The two control rods 622 are located on the two opposite sides of the box door 2, and the upper ends of the two control rods 622 are integrally formed with limit blocks 63. A flexible traction belt 13 for connecting the two limit blocks 63 is provided on the outside of the box body 1, wherein 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 inserted is fixedly provided on the side of the limit block 63 away from the control rod 622.

[0037] The flexible traction belt 13 is detachably connected to the limit block 63, so that the limit block 63 and the flexible traction belt 13 together constitute a "handle", which can be used to simultaneously pull the two control rods 622 to slide up and down synchronously, and can also be used to pull the ring network box to move as a whole.

[0038] Reference Figure 5 and Figure 6 The box door 2 is provided with a heat dissipation port 21, and a connecting plate 8 for connecting the two control rods 622 is provided on the outside of the box body 1. The two side edges of the connecting plate 8 are detachably connected to the two control rods 622. A blocking through hole 81 is provided on the connecting plate 8. When the two limit blocks 63 move up and down, the connecting plate 8 will be driven to move up and down synchronously. When the connecting plate 8 moves upward with the limit block 63, the blocked through hole 81 is misaligned with the heat dissipation port 21, and the heat dissipation port 21 is in a blocked state; when the connecting plate 8 moves downward with the limit block 63, the blocked through hole 81 coincides with the heat dissipation port 21, and normal heat dissipation can be achieved at this time.

[0039] Reference Figure 6 and Figure 8 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 inserting the connecting protrusion 82 is provided on the sides of the two control rods 622 close to each other; an elastic clamping member 83 is provided on the connecting protrusion 82, wherein the elastic clamping member 83 includes a compression spring 831 and an arc-shaped protrusion 832; A placement groove 821 is provided on the connecting protrusion 82 for the compression spring 831 and the arc-shaped protrusion 832 to be placed. The compression spring 831 presses one side of the arc-shaped protrusion 832 so that a part of the arc-shaped protrusion 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 is provided on the inner wall of the limiting notch 6221 for the elastic clip 83 to be inserted into.

[0040] The implementation principle of the embodiment of the present application is: When the ring network box is installed inside the box transformer, the handle composed of the limit block 63 and the flexible traction belt 13 moves downward as a whole, thereby driving the two control rods 622 to move downward synchronously, so that the control rod 622 squeezes the protruding part of the adjustment rod 61 along the guide inclined surface 612, driving the adjustment rod 61 to slide toward the end close to the control spring 621, and then the adjustment protrusion 611 slides along the guide inclined surface 52 to the top of the installation through hole 32, thereby squeezing the support rod 5 downward, so that the lower end of the support rod 5 abuts against the ground; at this time, the blocked through hole 81 coincides with the heat dissipation port 21, and heat dissipation can be normal at this time; When the ring network box needs to be moved out of the transformer, the two control rods 622 are driven to move upward as a whole. At this time, the blocked 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 adjustment rod 61. At this time, under the action of the control spring 621, the adjustment rod 61 slides in the direction away from the control spring 621 until the adjustment protrusion 611 on the adjustment rod 61 is misaligned with the upper end of the support rod 5, and then the support rod 5 is moved upward under the action of the reset spring 71, so that there is a gap between the lower end of the support rod 5 and the ground.

[0041] Unless otherwise defined, the terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The "first", "second", "third" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and other similar words do not indicate a quantitative limit, but indicate that there is at least one. "Including" or "comprising" and other similar words mean that the elements or objects appearing in front of "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" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present 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 a vertical direction. An adjusting member (6) for controlling the support rods (5) to move downward and a resetting 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 move downward to a state where it is flush with the lowest point of the moving wheel (4).

2. A solid insulated compact ring mainframe according to claim 1, characterized in that: The base plate (3) is provided with accommodating notches (31) on two opposite vertical side surfaces, and the base plate (3) is provided with a mounting through hole (32) for the support rod (5) to pass through on the inner wall of the base plate (3) away from the accommodating notch (31); A baffle (51) is fixedly provided on the outer periphery of the support rod (5); an installation recess (321) for the baffle (51) to be inserted and slide is provided on the upper opening edge of the installation 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 installation recess (321).

3. A solid insulated compact ring mainframe according to claim 2, characterized in that: The upper end 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 top of the mounting through hole (32), thereby pressing the support rod (5) downward.

4. A solid insulated compact ring mainframe according to claim 3, characterized in that: 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 adjusting rod (61) so that the other end protrudes out of the accommodating notch (31); the edge of the end of the adjusting rod (61) away from the control spring (621) is provided with a guiding inclined surface (612); the control rod (622) moves downward to be able to squeeze the protruding portion of the adjusting rod (61) along the guiding inclined surface (612), thereby driving the adjusting rod (61) to slide toward the end close to the control spring (621).

5. A solid insulated compact ring mainframe according to claim 4, characterized in that: 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; The guide block (11) is provided with a locking through hole, the control rod (622) is provided with a plurality of locking screw holes that can overlap with the locking through hole, and the outside of the box body (1) is provided with a locking bolt (12) that penetrates the locking through hole and is screwed into the locking screw hole.

6. A solid insulated compact ring mainframe according to claim 5, characterized in that: The locking bolt (12) is a butterfly bolt (121).

7. A solid insulated compact ring mainframe according to claim 4, characterized in that: 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).

8. A solid insulated compact ring mainframe according to claim 7, 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).

9. The solid insulated compact ring mainframe box according to claim 7, characterized in that: The box door (2) is provided with a heat dissipation port (21), the box body (1) is provided with a connecting plate (8) for connecting the two control rods (622) on the outside, and the connecting plate (8) is provided with a blocking through hole (81); Two opposite edges of the connecting plate (8) are detachably connected to two control rods (622); the blocking through hole (81) is misaligned with the heat dissipation opening (21) when the connecting plate (8) moves upward with the limit block (63), and overlaps with the heat dissipation opening (21) when the connecting plate (8) moves downward with the limit block (63).

10. A solid insulated compact ring mainframe according to claim 9, 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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