10kV switch trolley maintenance platform

Abstract

The invention provides a 10kV switch trolley maintenance platform, and relates to the technical field of electric power tools, the 10kV switch trolley maintenance platform comprises a frame and supporting frames, the supporting frames are connected to the two sides of the frame, the top of each supporting frame is provided with a fixing assembly for fixing a circuit breaker, the top of the frame is provided with a lifting platform in a lifting mode, and the two sides of the top of the lifting platform are each provided with a side frame; the bearing platform bears the circuit breaker, the lifting platform lifts and adjusts the circuit breaker to be in butt joint and fixed with the fixing hole site, meanwhile, the circuit breaker and the fixing pin site are fixed through the fixing pin, the lifting platform and the bearing platform are provided with the first opening and the second opening which are consistent with the hole site of the circuit breaker chassis, and screws of the circuit breaker chassis are convenient to disassemble; the lifting platform is operated to ascend or descend, on the premise that the circuit breaker is fixed, the circuit breaker chassis and the lifting platform ascend or descend together, the chassis part of the circuit breaker can be directly inspected and maintained in the descending space, safety risks are avoided, and the field work management level is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric power tools, in particular to a 10kV switch trolley maintenance platform. BACKGROUND

[0002] With the development of the electric power industry, 10kV switch devices (circuit breaker switches) are increasingly widely used in power grids. During normal operation, regular maintenance is required, and the maintenance, repair and component replacement of 10kV switches are important aspects of 10kV switch maintenance. In particular, the rapid disassembly of the chassis of a 10kV switch can quickly improve the efficiency of 10kV switch maintenance and facilitate the repair and maintenance of the internal mechanisms of the switch.

[0003] However, in actual maintenance, a special trolley is needed to transport the circuit breaker switch to the designated location. Although some trolley designs based on tracks or guide rails have been put into use and can provide good mobility stability and load capacity, there are certain limitations in the structure and design of the chassis, which cannot meet the disassembly and action characteristic test requirements of the chassis under maintenance conditions. During traditional maintenance, the on-site maintenance personnel transport the circuit breaker switch to the maintenance support and then push it to the turnover switch for bottom plate disassembly. The transportation and turnover switch pose a safety risk to personnel. Therefore, how to stably lift, quickly move, safely and simply operate, and quickly disassemble the switch chassis is a problem to be solved. Therefore, the present application proposes a 10kV switch trolley maintenance platform to solve the problems in the prior art. SUMMARY

[0004] To solve the above problems, the present application provides a 10kV switch trolley maintenance platform. The 10kV switch trolley maintenance platform is raised or lowered by operating the lifting platform. Under the premise that the circuit breaker is fixed, the circuit breaker chassis is raised or lowered together with the lifting platform. The space for lowering can directly check and maintain the bottom part of the circuit breaker, avoiding safety risks and improving the level of on-site work management.

[0005] To achieve the purpose of the present application, the following technical solutions are used: a 10kV switch trolley maintenance platform, comprising a frame and a support frame, the support frame is connected to both sides of the frame, and the top of the support frame is provided with a fixed component for fixing the circuit breaker, the top of the frame is provided with a lifting platform, and the top of the lifting platform is provided with a side frame on both sides, two groups of side frames are movably arranged between the two groups of side frames, the lower side of the two groups of side frames is provided with a rotating belt member, and the two sides of the bearing platform are respectively connected with the upper surfaces of the two rotating belt members.

[0006] The lower part of the outer side of the support frame of the two groups is movably provided with a counterweight frame, the counterweight frame is used for bearing counterweight blocks, the counterweight frame and the lower surface of the rotating belt piece are connected with an extension rod, and the counterweight frame is connected with the bearing platform in linkage motion.

[0007] Further improvement lies in that universal wheels are arranged at the four corners of the bottom of the frame, and a brake assembly is arranged on the universal wheels.

[0008] Further improvement lies in that the fixing assembly comprises a mounting seat and a circuit breaker support rod, the mounting seat is arranged at the upper end of the support frame, the circuit breaker support rod is connected to the rear end of the top of the mounting seat, the circuit breaker support rod is provided with a fixing hole, the front end of the top of the mounting seat is provided with a fixing pin, after the bearing platform bears the circuit breaker, the height of the circuit breaker is adjusted through the lifting of the lifting platform, the fixing hole is docked, a fixing bolt is inserted, and the circuit breaker is fixed with the fixing pin through the fixing pin.

[0009] Further improvement lies in that the lifting platform is provided with a first opening, the bearing platform is provided with a second opening corresponding to the first opening, the first opening and the second opening are consistent with the bottom disc hole of the circuit breaker, and the bottom disc screw of the circuit breaker is disassembled.

[0010] Further improvement lies in that lifting mechanisms are arranged at the two sides of the top of the frame, and matching worm wheels and worm gears are rotatably arranged in the lifting mechanisms, the inner side of the worm wheel is provided with an internal screw hole, first threaded lead screws are arranged at the two sides of the bottom of the lifting platform, the first threaded lead screws pass through the internal screw hole and are screw-fitted, connecting shafts are connected between the worm gears on the two sides, one side of the connecting shafts is connected with a rotating disc, guide rods are arranged at the four corners of the bottom of the lifting platform, guide sleeves are arranged at the four corners of the top of the frame, and the guide rods movably pass through the guide sleeves.

[0011] Further improvement lies in that guide grooves are arranged above the interiors of the side frames, and H-shaped blocks are movably arranged on the guide grooves, the inner side of the H-shaped block is connected with the bearing platform, the outer side of the H-shaped block is connected with the upper surface of the rotating belt piece, the inner bottom surface of the side frame is provided with a plurality of groups of ball bearings, and the bearing platform is arranged on the ball bearings.

[0012] Further improvement lies in that shaft plates are arranged at the middle positions of the front and rear ends of the top of the lifting platform, a second threaded lead screw is rotatably arranged between the two groups of shaft plates, the bottom of the bearing platform is provided with a nut block matched with the second threaded lead screw, and the rear end of the second threaded lead screw is connected with a rotating handle.

[0013] Further improvement lies in that the rotating belt part comprises a rotating wheel and a steel belt, the rotating wheel is arranged at two ends below the outside of the side frame, the steel belt is arranged outside the rotating wheel, the telescopic rod comprises a sleeve and a plug rod, the plug rod is movably arranged in the sleeve, and the upper surface and the lower surface of the steel belt are connected with the lower end of the H-shaped block and the upper end of the plug rod respectively.

[0014] Further improvement lies in that the outside of the support frame is provided with a guide rail below, and the inside of the guide rail is provided with a sliding groove, one side of the counterweight frame is provided with a sliding block matched with the sliding groove, and the lower end of the sleeve is connected with the counterweight frame.

[0015] Further improvement lies in that the weight of the counterweight block in the counterweight frame is calculated according to the following formula:

[0016]

[0017] Wherein, W1 is the weight of the circuit breaker, W2 is the weight of the bearing platform itself, W3 is the weight of the counterweight block in the counterweight frame, W4 is the weight of the counterweight frame itself, L1 is the distance from the center of gravity of the bearing platform containing the circuit breaker to the fulcrum, and L2 is the distance from the center of gravity of the counterweight frame containing the counterweight block to the fulcrum.

[0018] The beneficial effects of the present application are:

[0019] 1. The circuit breaker is carried by the bearing platform, and after the circuit breaker is butted with the fixed hole position through the lifting adjustment of the lifting platform, the fixed bolt is inserted, and the circuit breaker is fixed with the fixed pin position by using the fixed pin at the same time. The lifting platform and the bearing platform are provided with a first opening and a second opening, and are consistent with the hole position of the circuit breaker bottom plate. The circuit breaker bottom plate screw is operated at the bottom of the lifting platform. Then, the lifting platform is operated to rise or fall. Under the premise that the circuit breaker is fixed, the circuit breaker bottom plate rises or falls together with the lifting platform. The space of the descending can directly check and maintain the bottom part of the circuit breaker, avoid safety risk, and improve the work management level of the site.

[0020] 2. The second threaded screw rod is rotated by rotating the rotating handle, the bearing platform is arranged on the ball and moves by using the matching effect of the second threaded screw rod and the nut block, and the bearing platform is extended into the power equipment, so that the circuit breaker is conveniently carried onto the bearing platform, and convenience is provided for maintenance.

[0021] 3. In the movement process of the bearing platform, the H-shaped block is driven to move along the guide groove, the steel belt is driven to move from the upper surface, the telescopic rod is driven to move reversely from the lower surface of the steel belt, so that the counterweight frame moves on the guide rail in the opposite direction of the movement of the bearing platform. By using the effect of the counterweight block in the counterweight frame, the weight of the circuit breaker carried by the bearing platform is balanced, so as to improve the stability of the whole equipment. The required counterweight block weight is accurately calculated by the formula, and the stability and safety of the equipment are further improved. Attached Figure Description

[0022] Figure 1 This is the front view of the present invention;

[0023] Figure 2 This is a schematic diagram of the linkage structure of the present invention;

[0024] Figure 3 For the present invention Figure 2 Schematic diagram of the structure at point A in the middle;

[0025] Figure 4 This is a schematic diagram of the framework structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the support frame structure of the present invention.

[0027] The components are as follows: 1. Frame; 2. Support frame; 3. Lifting platform; 4. Side frame; 5. Bearing platform; 6. Counterweight frame; 7. Casters; 8. Mounting base; 9. Circuit breaker support rod; 10. Fixing hole; 11. Fixing pin; 12. First opening; 13. Second opening; 14. Lifting mechanism; 15. First threaded screw; 16. Turning plate; 17. Guide rod; 18. Guide sleeve; 19. Guide groove; 20. H-block; 21. Ball bearing; 22. Rotary wheel; 23. Steel strip; 24. Sleeve; 25. Insert rod; 26. Guide rail; 27. Sliding block; 28. Shaft plate; 29. ​​Second threaded screw. Detailed Implementation

[0028] To enhance understanding of the present invention, the present invention will be further described in detail below with reference to embodiments. These embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0029] Example 1

[0030] according to Figure 1 , 2 As shown in Figures 3, 4, and 5, this embodiment proposes a 10kV switch trolley maintenance platform, including a frame 1 and a support frame 2. The support frame 2 is connected to both sides of the frame 1, and the top of the support frame 2 is provided with a fixing component for fixing the circuit breaker. The top of the frame 1 is provided with a lifting platform 3, and both sides of the top of the lifting platform 3 are provided with side frames 4. A bearing platform 5 is movably provided between the two sets of side frames 4. A conveyor belt is provided below the outer side of both sets of side frames 4. The two sides of the bearing platform 5 are respectively connected to the upper surface of the conveyor belt on both sides.

[0031] A counterweight frame 6 is movably provided on the lower outer side of both sets of support frames 2. The counterweight frame 6 is used to support the counterweight block. A telescopic rod is connected between the counterweight frame 6 and the lower surface of the conveyor belt. The counterweight frame 6 moves in conjunction with the support platform 5.

[0032] The four corners of the bottom of the frame 1 are each provided with a universal wheel 7, and the universal wheel 7 is provided with a brake assembly. When in use, the device can be directly pushed to move to the designated position by the action of the universal wheel 7, and then the universal wheel 7 is fixed by using the brake assembly.

[0033] The fixing assembly comprises a mounting seat 8 and a circuit breaker support rod 9, the mounting seat 8 is arranged at the upper end of the support frame 2, the circuit breaker support rod 9 is connected to the rear end of the top of the mounting seat 8, and the circuit breaker support rod 9 is provided with a fixing hole 10, the front end of the top of the mounting seat 8 is provided with a fixed pin position 11, after the circuit breaker is carried on the bearing platform 5, the height of the circuit breaker is adjusted by the lifting of the lifting platform 3, and the fixed hole 10 is connected, the fixed bolt is inserted, and the circuit breaker and the fixed pin position 11 are fixed by using the fixed pin at the same time. The lifting platform 3 is provided with a first opening 12, the bearing platform 5 is provided with a second opening 13 corresponding to the first opening 12, the first opening 12 and the second opening 13 are consistent with the bottom disc hole of the circuit breaker, and are used for disassembling the circuit breaker bottom disc screw. When in use, the circuit breaker is carried to the bearing platform 5, the fixed hole 10 is connected after the height of the circuit breaker is adjusted by the lifting of the lifting platform 3, the fixed bolt is inserted, and the circuit breaker and the fixed pin position 11 are fixed by using the fixed pin at the same time, the first opening 12 and the second opening 13 are left on the lifting platform 3 and the bearing platform 5, and are consistent with the hole position of the circuit breaker bottom disc, the operation of disassembling the circuit breaker bottom disc screw is carried out at the bottom of the lifting platform 3, then the lifting platform 3 is operated to rise or fall, under the premise that the circuit breaker is fixed, the circuit breaker bottom disc is lifted together with the lifting platform 3, and the inside of the circuit breaker bottom disc can be directly overhauled.

[0034] The two sides of the top of the frame 1 are each provided with a lifting mechanism 14, and a matched worm gear and worm are rotatably arranged in the lifting mechanism 14, the inner side of the worm gear is provided with an internal screw hole, the two sides of the bottom of the lifting platform 3 are each provided with a first threaded lead screw 15, the first threaded lead screw 15 penetrates through the internal screw hole and is screw adapted, a connecting shaft is connected between the two sides of the worm, one side of the connecting shaft is connected with a rotary disc 16, the four corners of the bottom of the lifting platform 3 are each provided with a guide rod 17, the four corners of the top of the frame 1 are each provided with a guide sleeve 18, and the guide rod 17 movably penetrates through the guide sleeve 18. When in use, the rotary disc 16 is rotated to drive the connecting shaft to rotate, so that the worm is rotated, the worm drives the worm gear to rotate, the first threaded lead screw 15 is driven to rise or fall by the screw thread action of the internal screw hole, so that the lifting platform 3 is lifted, and in this process, the guide rod 17 movably penetrates through the guide sleeve 18, so that the stability of the lifting of the lifting platform 3 is improved.

[0035] Embodiment two

[0036] According to Figure 1 , 2The embodiment shown in 1, 2, 3, 4, 5 proposes a 10kV switch trolley maintenance platform, which comprises a frame 1 and a support frame 2, the support frame 2 is connected on both sides of the frame 1, and the top of the support frame 2 is provided with a fixed assembly for fixing the circuit breaker, the top of the frame 1 is provided with a lifting platform 3, and the top of the lifting platform 3 is provided with a side frame 4 on both sides, two groups of the side frame 4 are movably arranged between the bearing platform 5, and the lower side of the outer side of the two groups of the side frame 4 is provided with a rotating belt piece, and the two sides of the bearing platform 5 are respectively connected with the upper surfaces of the rotating belt pieces on both sides.

[0037] The lower side of the outer side of the two groups of the support frame 2 is movably provided with a counterweight frame 6, the counterweight frame 6 is used for bearing the counterweight block, the counterweight frame 6 and the lower surface of the rotating belt piece are connected with the telescopic rod, and the counterweight frame 6 and the bearing platform 5 are linked and moved.

[0038] The four corners of the bottom of the frame 1 are provided with universal wheels 7, and the universal wheels 7 are provided with brake assemblies. When in use, the device can be directly pushed to move to the specified position by the action of the universal wheels 7, and then the universal wheels 7 are fixed by using the brake assemblies.

[0039] The upper portion of the side frame 4 is provided with a guide groove 19, and the guide groove 19 is movably provided with an H-shaped block 20, the inner side of the H-shaped block 20 is connected with the bearing platform 5, the outer side of the H-shaped block 20 is connected with the upper surface of the rotating belt part, the inner bottom surface of the side frame 4 is provided with a plurality of groups of rolling balls 21, and the bearing platform 5 is arranged on the rolling balls 21. The middle positions of the front and rear ends of the top of the lifting platform 3 are provided with shaft plates 28, and a second threaded rod 29 is rotatably arranged between the two groups of shaft plates 28, the bottom of the bearing platform 5 is provided with a nut block matched with the second threaded rod 29, and the rear end of the second threaded rod 29 is connected with a rotating handle. The rotating belt part includes a rotating wheel 22 and a steel belt 23, the rotating wheel 22 is rotatably arranged at both ends of the lower portion of the outer side of the side frame 4, and the steel belt 23 is arranged on the outer side of the rotating wheel 22. The telescopic rod includes a sleeve 24 and a plug rod 25, the plug rod 25 is movably inserted into the inner portion of the sleeve 24, and the upper surface and the lower surface of the steel belt 23 are respectively connected with the lower end of the H-shaped block 20 and the upper end of the plug rod 25. The lower portion of the outer side of the support frame 2 is provided with a guide rail 26, and the inner portion of the guide rail 26 is provided with a sliding groove, one side of the counterweight frame 6 is provided with a sliding block 27 matched with the sliding groove, and the lower end of the sleeve 24 is connected with the counterweight frame 6. When in use, the rotating handle drives the second threaded rod 29 to rotate, and the bearing platform 5 is arranged on the rolling balls 21 to move by the matching effect of the second threaded rod 29 and the nut block, the bearing platform 5 is extended into the power equipment, thereby facilitating the carrying of the circuit breaker onto the bearing platform 5, in the movement process of the bearing platform 5, the H-shaped block 20 is driven to move along the guide groove 19, and the steel belt 23 is driven to move from the upper surface, the telescopic rod is reversely driven to move from the lower surface of the steel belt 23, so that the counterweight frame 6 moves on the guide rail 26 in the opposite direction of the movement of the bearing platform 5, and the counterweight block in the counterweight frame 6 is used to balance the weight of the circuit breaker carried by the bearing platform 5, thereby improving the stability of the whole equipment. The telescopic effect of the telescopic rod is used to adapt to the lifting position of the lifting platform 3.

[0040] The weight of the counterweight block in the counterweight frame 6 is calculated by the following formula:

[0041]

[0042] Wherein, W1 is the weight of the circuit breaker; W2 is the self weight of the bearing platform 5; W3 is the weight of the counterweight block in the counterweight frame 6; W4 is the self weight of the counterweight frame 6; L1 is the distance from the center of gravity of the bearing platform 5 containing the circuit breaker to the fulcrum; L2 is the distance from the center of gravity of the counterweight frame 6 containing the counterweight block to the fulcrum.

[0043] The 10kV switch trolley maintenance platform bears the circuit breaker through the bearing platform 5, adjusts the circuit breaker and the fixed hole position 10 through the lifting platform 3, inserts the fixed bolt, and simultaneously fixes the circuit breaker and the fixed pin position 11 by using the fixed pin, the first opening 12 and the second opening 13 of the lifting platform 3 and the bearing platform 5 are consistent with the hole position of the circuit breaker bottom plate, the circuit breaker bottom plate screw operation is carried out at the bottom of the lifting platform 3, then the lifting platform 3 is operated to rise or fall, under the premise that the circuit breaker is fixed, the circuit breaker bottom plate rises or falls together with the lifting platform 3, the space of the descending can directly check and maintain the bottom plate part of the circuit breaker, avoid the safety risk, improve the work management level of the scene, and the bearing platform 5 is erected on the ball 21 to move by rotating the second threaded screw rod 29, the second threaded screw rod 29 and the nut block are matched, the bearing platform 5 is stretched into the power equipment, so that the circuit breaker is conveniently carried on the bearing platform 5, and convenience is provided for maintenance. At the same time, the H-shaped block 20 is driven to move along the guide groove 19 in the process of the movement of the bearing platform 5, and the steel belt 23 is driven to move from the upper surface, the lower surface of the steel belt 23 drives the telescopic rod to move reversely, so that the counterweight frame 6 moves on the guide rail 26 in the opposite direction of the movement of the bearing platform 5, the counterweight block in the counterweight frame 6 is used to balance the weight of the circuit breaker borne by the bearing platform 5, so as to improve the stability of the whole equipment, the required counterweight block weight is accurately calculated through the formula, and the stability and safety of the equipment are further improved.

[0044] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A 10kV switch trolley maintenance platform, comprising a frame (1) and a support frame (2), characterized in that: The support frame (2) is connected to both sides of the frame (1), and the top of the support frame (2) is provided with a fixing component for fixing the circuit breaker. The top of the frame (1) is provided with a lifting platform (3), and both sides of the top of the lifting platform (3) are provided with side frames (4). A bearing platform (5) is movably provided between the two sets of side frames (4). A conveyor belt is provided below the outer side of the two sets of side frames (4). The two sides of the bearing platform (5) are respectively connected to the upper surface of the conveyor belt on both sides. A counterweight frame (6) is movably provided on the lower outer side of both sets of support frames (2). The counterweight frame (6) is used to support the counterweight block. A telescopic rod is connected between the counterweight frame (6) and the lower surface of the conveyor belt. The counterweight frame (6) moves in conjunction with the support platform (5).

2. The 10kV switch trolley maintenance platform according to claim 1, characterized in that: The frame (1) is provided with casters (7) at the four corners of its bottom, and the casters (7) are provided with braking components.

3. The 10kV switch trolley maintenance platform according to claim 1, characterized in that: The fixing assembly includes a mounting base (8) and a circuit breaker support rod (9). The mounting base (8) is located at the upper end of the support frame (2). The circuit breaker support rod (9) is connected to the rear end of the top of the mounting base (8). The circuit breaker support rod (9) is provided with fixing holes (10). The front end of the top of the mounting base (8) is provided with fixing pins (11). After the bearing platform (5) carries the circuit breaker, the height of the circuit breaker is adjusted by the lifting platform (3) to align with the fixing holes (10). Fixing bolts are inserted, and the circuit breaker is fixed to the fixing pins (11) at the same time using fixing pins.

4. The 10kV switch trolley maintenance platform according to claim 1, characterized in that: The lifting platform (3) is provided with a first opening (12), and the bearing platform (5) is provided with a second opening (13) corresponding to the first opening (12). The first opening (12) and the second opening (13) are consistent with the chassis hole of the circuit breaker and are used to remove the chassis screws of the circuit breaker.

5. The 10kV switch trolley maintenance platform according to claim 1, characterized in that: The top of the frame (1) is provided with lifting mechanisms (14) on both sides, and the lifting mechanism (14) is provided with a matching worm gear and worm. The inner side of the worm gear is provided with an internal thread hole. The bottom of the lifting platform (3) is provided with first threaded screws (15) on both sides. The first threaded screws (15) pass through the internal thread hole and are threadedly matched. The worms on both sides are connected by a connecting shaft, and a rotating disk (16) is connected to one side of the connecting shaft. The bottom of the lifting platform (3) is provided with guide rods (17) at the four corners. The top of the frame (1) is provided with guide sleeves (18) at the four corners. The guide rods (17) move through the guide sleeves (18).

6. The 10kV switch trolley maintenance platform according to claim 1, characterized in that: The side frame (4) has a guide groove (19) on its upper part, and an H-shaped block (20) is movably mounted on the guide groove (19). The inner side of the H-shaped block (20) is connected to the bearing platform (5), and the outer side of the H-shaped block (20) is connected to the upper surface of the conveyor belt. The inner bottom surface of the side frame (4) is provided with ball bearings (21), and there are multiple sets of ball bearings (21). The bearing platform (5) is mounted on the ball bearings (21).

7. A 10kV switch trolley maintenance platform according to claim 6, characterized in that: The lifting platform (3) has a shaft plate (28) at the middle position of the front and rear ends of the top, and a second threaded screw (29) is rotatably provided between the two sets of shaft plates (28). The bottom of the bearing platform (5) is provided with a nut block that is compatible with the second threaded screw (29), and a handle is connected to the rear end of the second threaded screw (29).

8. A 10kV switch trolley maintenance platform according to claim 6, characterized in that: The rotating belt component includes a rotating wheel (22) and a steel belt (23). The rotating wheel (22) is rotatably mounted at both ends below the outside of the side frame (4). The steel belt (23) is wrapped around the outside of the rotating wheel (22). The telescopic rod includes a sleeve (24) and an insert rod (25). The insert rod (25) is movably inserted into the inside of the sleeve (24). The upper and lower surfaces of the steel belt (23) are respectively connected to the lower end of the H-shaped block (20) and the upper end of the insert rod (25).

9. A 10kV switch trolley maintenance platform according to claim 8, characterized in that: The support frame (2) has a guide rail (26) on its lower outer side, and the guide rail (26) has a sliding groove inside. The counterweight frame (6) has a sliding block (27) on one side that is adapted to slide with the sliding groove. The lower end of the sleeve (24) is connected to the counterweight frame (6).

10. A 10kV switch trolley maintenance platform according to claim 1, characterized in that: The weight of the counterweight block inside the counterweight frame (6) is calculated using the following formula: Wherein, W1 is the weight of the circuit breaker; W2 is the weight of the bearing platform (5); W3 is the weight of the counterweight block inside the counterweight frame (6); W4 is the weight of the counterweight frame (6); L1 is the distance from the center of gravity of the bearing platform (5) including the circuit breaker to the fulcrum; L2 is the distance from the center of gravity of the counterweight frame (6) including the counterweight block to the fulcrum.

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