Maintenance and first-aid repair platform based on transformer substation AC-DC integrated power supply

Abstract

The invention discloses a maintenance first-aid repair platform based on a transformer substation AC-DC integrated power supply, which comprises a mobile base, two buckles are arranged on each of the left and right sides of the mobile base, a push handle is arranged on one side of the mobile base, four connecting cylinders are slidably connected to the periphery of the mobile base, supporting rods are slidably connected in the connecting cylinders, and universal wheels are connected to the lower ends of the connecting cylinders. A first spring is arranged between the supporting rod and the connecting cylinder, a rotating shaft is sleeved with the buckle and connected with a first supporting rod, the first supporting rod is rotationally connected with a second supporting rod, a supporting table is fixed to the top end of the second supporting rod, and the upper portion of the supporting rod is connected with a supporting plate through a connecting rod. During use, the supporting table can be stably unfolded so that an operator can stand on the supporting table, maintenance treatment of high-altitude components of a transformer substation can be achieved, and the equipment maintenance process is more flexible and convenient.

Description

Technical Field

[0001] The invention relates to the technical field of transformer substation emergency repair platforms, in particular to a maintenance emergency repair platform based on a transformer substation AC / DC integrated power supply. Background Art

[0002] Today, with the increasing concern for the safety of power supply, the importance of substation maintenance and emergency repair is related to the reliable operation of the entire power grid. Under normal circumstances, the DC system of the substation provides reliable DC power for control signals, relay protection, automatic devices, circuit breaker tripping and closing operation circuits, etc. When an AC power failure occurs, it provides DC power for emergency lighting, AC uninterrupted power supply and accident lubricating oil pumps. Whether the DC system can play a vital role in the safe operation of the substation is the guarantee of safe operation. The key components of the DC system of the substation, the battery pack, the charger fails or needs maintenance, the battery panel in the battery pack is broken, the battery pack is charged and discharged, the DC transformation, the charger is damaged, etc. Due to the special requirement that the power cannot be cut off, a temporary battery pack needs to be built manually. Battery group, temporary charging system and other systems, battery is also a very special power equipment, on the one hand, it is the ultimate power source of the substation and an important part of the DC system, on the other hand, it is a dangerous source of the substation, bursting, acid spraying and burning often occur under the action of electric current. The stability of the battery is of vital importance to the substation, and when the key components of the DC system of the substation, the battery group and charger fail or need to be repaired, a crane needs to be used to enter the substation site, and the crane is large in size and cannot be moved well in the substation site. When a cart is used to carry heavy equipment, the height of the cart support platform is low. When the installation position is high, the cart needs to be lifted to an appropriate height manually, which is time-consuming and laborious, and brings great inconvenience to the on-site operators.

[0003] Therefore, it is necessary to provide a substation maintenance and repair platform that can flexibly and easily perform maintenance and repair. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a maintenance and repair platform based on the AC / DC integrated power supply of the substation, which can solve the problem that there is a large gap between the cart and the maintenance height when maintaining AC / DC, and the operation is not flexible, resulting in inconvenience in maintenance.

[0005] To achieve the above object, the present invention provides the following technical solution: A maintenance and emergency repair platform based on the integrated AC-DC power supply of a substation, including a mobile base. On each of the left and right sides of the mobile base, there are two buckles. On one side of the mobile base, there is a push handle. Four connecting cylinders are slidably connected around the mobile base. In the four connecting cylinders, there are support rods slidably connected. The lower end of the connecting cylinder is connected with a universal wheel. A first spring is sleeved between the support rod and the connecting cylinder. A rotating shaft is sleeved in the buckle. The rotating shaft is connected with a first support rod. The first support rod is rotatably connected with a second support rod. The top end of the second support rod is fixedly provided with a support platform.

[0006] Furthermore, the side above the support rod is rotatably connected with a connecting rod. The other end of the connecting rod is rotatably connected with a support plate. A limiting seat is fixed on the support plate. A fixing plate is arranged at the edge of the support plate. A fixing block is clamped on the support plate. The fixing block is horizontally provided with a through hole. A cross bar passes through the fixing block. One end of the cross bar is fixedly connected with a linkage rod. One side of the linkage rod is parallel to the cross bar. A rectangular seat is sleeved on the linkage rod.

[0007] Furthermore, the support platform is formed by splicing two movable plates. Both of the two movable plates are provided with insertion holes and are slidably connected with a plurality of insertion beams.

[0008] Furthermore, the second support rod is provided with a clamping plate. The clamping plate is fixed on the left and right side edges of the second support rod. The clamping plate is provided with a through hole. An insertion rod is arranged on the clamping plate. A second spring is arranged between the insertion rod and the clamping plate.

[0009] Furthermore, a clamping rod is arranged on the lower surface of the first support rod. A connection port is opened at the upper end of the clamping rod. The size of the connection port is adapted to the thickness of the insertion rod.

[0010] Furthermore, a rotating rod is rotatably connected to one end of the mobile base close to the push handle. The surface of the rotating rod is rotatably connected with the push handle. A limiting port is arranged at one end of the rotating rod.

[0011] Furthermore, a corresponding positioning rod is inserted into the limiting port. The positioning rod is arranged on the corresponding connecting plate. The positioning rod at one end of the connecting plate is slidably connected to the mobile base. The lengths of the positioning rods at both ends of the connecting plate are different.

[0012] Furthermore, a pull rod is arranged on the push handle. One end of the pull rod is fixedly connected with the push handle, and the other end is fixedly connected with the linkage rod.

[0013] Furthermore, the lengths of the positioning rods at both ends of the connecting plate can be adjusted by a threaded connection method.

[0014] Furthermore, the second support rod is rotatably connected to the support platform through a limiting groove. The number of universal wheels is four, and a brake pad for braking is provided inside the universal wheel.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. Based on the maintenance and emergency repair platform for the integrated AC-DC power supply of a substation, the present invention sets a limiting seat on the moving base. The limiting seat is connected to the first support rod through a rotating shaft, and the first support rod can rotate around the rotating shaft. The first support rod can be in a straightened state. One end of the first support rod is connected to the second support rod, and the first support rod and the second support rod can rotate relative to each other. The first support rod and the second support rod can be kept in a folded state in the initial state. The first support rod and the second support rod are arranged in a V shape. The first support rod is rotatably connected to the corresponding support platform. When the first support rod and the second support rod are folded, the position of the support platform will be lowered, and the two movable plates of the support platform will be aligned. A charger and a battery pack can be placed on the support platform for transfer, so as to move to the position that needs to be maintained, or move away the removed components. When it is necessary to maintain the charger or the battery pack, the first support rod and the second support rod can be pulled. The first support rod and the second support rod can be gradually stretched to the maximum limit. The first support rod and the second support rod can be perpendicular to the transfer platform. The first support rod and the second support rod can lift the height of the support platform, so as to facilitate the maintenance of components at high places. When the support platform becomes lower, the two movable plates will separate from each other. When separating, the insertion beam will be exposed, and the support platform can be fixed through the insertion beam. The support platform will not rotate, so that the operator can stand on the support platform to maintain high places. The support platform has two functions. It can not only transport batteries or tools, but also be used as a support tool for personnel. It is convenient and practical, bringing convenience to the maintenance and emergency repair of substations.

[0017] 2. Based on the maintenance and emergency repair platform for the integrated AC-DC power supply of a substation, the present invention utilizes the cooperation design between the clamping rod and the insertion rod, combined with the connection port on the lower surface of the first support rod and the through hole on the clamping plate, to form a multiple safety guarantee mechanism, effectively preventing components from loosening or falling off. A rotating rod is provided at one end of the moving base close to the push handle. The rotating rod, the limiting port and the positioning rod cooperate with each other to ensure that the platform will not move accidentally due to external forces during the working state. The pull rod arranged on the push handle is fixedly connected with the linkage rod, realizing the organic combination of manual drive and mechanical action. The positioning rods at both ends of the connecting plate are connected by a threaded connection method, and the length can be adjusted to adapt to different working environments, improving the practicability of the present invention.

[0018] 3. The maintenance and emergency repair platform of the present invention is based on the integrated AC / DC power supply of a substation. By setting a connecting cylinder on the mobile base, a support rod can be slidably connected inside the connecting cylinder. The lower end of the support rod is connected to a universal wheel, which facilitates the movement of the mobile base. A first spring is sleeved on the support rod, which can drive the mobile base to move upward, and the universal wheel can move forward, thus realizing the movement of the base. The support rod is connected to a connecting rod, and the connecting rod is connected to the support plate. The connecting rod can slide in the limit seat. There is a fixed block on the support plate, and a cross bar is inserted into the fixed block, which will limit the support plate. The cross bar is arranged on the linkage rod, and the linkage rod is slidably connected to the fixed seat. The linkage rod can drive the cross bar to move, and the cross bar can be inserted into or away from the cross seat, thus realizing the adjustment of the transfer platform. One end of the linkage rod is provided with a pull rod, and the pull rod is arranged on the push handle. When the push handle rotates, it can drive the pull rod to move, and the pull rod can drive the whole linkage rod to move, thus controlling the movement of the cross bar. When an object is placed on the platform of the transfer platform or a staff member stands on it, the push handle can be rotated, and the push handle can pull the cross bar out of the cross seat. The cross seat will not be limited and will move. During the movement process, the transfer platform will move downward, and the universal wheel can retract into the vertical cylinder, so that the vertical cylinder can be connected to the ground, ensuring the stability of the transfer platform and the platform, and thus ensuring the safety of the staff members. Description of the Drawings

[0019] Figure 1 Structural diagram of the maintenance and emergency repair platform of the present invention based on the integrated AC / DC power supply of a substation;

[0020] Figure 2 Schematic diagram of the mobile base structure of the maintenance and emergency repair platform of the present invention based on the integrated AC / DC power supply of a substation;

[0021] Figure 3 Side view of the maintenance and emergency repair platform of the present invention based on the integrated AC / DC power supply of a substation;

[0022] Figure 4 Top view of the maintenance and emergency repair platform of the present invention based on the integrated AC / DC power supply of a substation;

[0023] Figure 5 Partial enlarged view at A of the maintenance and emergency repair platform of the present invention based on the integrated AC / DC power supply of a substation;

[0024] Figure 6 Partial enlarged view at B of the maintenance and emergency repair platform of the present invention based on the integrated AC / DC power supply of a substation;

[0025] Figure 7 Partial enlarged view at C of the maintenance and emergency repair platform of the present invention based on the integrated AC / DC power supply of a substation;

[0026] Reference Signs:

[0027] 1. Mobile base; 2. Push handle; 3. Insert beam; 4. Support platform; 5. Universal wheel; 6. Connecting cylinder; 7. First spring; 8. Support rod; 9. Rotating shaft; 10. First support rod; 11. Second support rod; 12. Insert rod; 13. Clamping plate; 14. Second spring; 15. Clamping rod; 16. Connection port; 17. Linkage rod; 18. Fixed plate; 19. Rectangular seat; 20. Cross bar; 21. Connecting rod; 22. Support plate; 23. Fixed seat; 24. Buckle; 25. Limit seat; 26. Rotating rod; 27. Limit port; 28. Positioning rod; 29. Connecting plate; 30. Pull rod; 31. Limit groove. Detailed implementation manner

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Embodiment 1

[0030] As Figures 1 to 7 shown, it shows a schematic structural diagram of the present invention. The maintenance and emergency repair platform based on the integrated AC-DC power supply of the substation includes a mobile base 1. Two buckles 24 are provided on each of the left and right sides of the mobile base 1. A push handle 2 is provided on one side of the mobile base 1. Four connecting cylinders 6 are slidably connected around the mobile base 1. A support rod 8 is slidably connected in the four connecting cylinders 6. The lower end of the connecting cylinder 6 is connected with a universal wheel 5. A first spring 7 is sleeved between the support rod 8 and the connecting cylinder 6. A rotating shaft 9 is sleeved in the buckle 24. The rotating shaft 9 is connected with a first support rod 10. The first support rod 10 is rotatably connected with a second support rod 11. The top end of the second support rod 11 is fixedly provided with a support platform 4. The mobile base 1 bears the weight of the entire platform and facilitates the overall movement. Two buckles 24 are provided on each of the left and right sides of the mobile base 1 for fixedly connecting the rotating shaft 9. The push handle 2 is provided on one side of the base to facilitate the operator to push or pull the platform. The four connecting cylinders 6 are slidably connected around the mobile base for supporting and adjusting the height and angle of the platform. The support rod 8 slidably connected in the four connecting cylinders 6 is connected with the connecting cylinder 6 through the first spring 7 to achieve the stability and flexibility of the platform. The universal wheel 5 is provided at the lower end of the support rod to facilitate the movement of the platform on different grounds. The universal wheel 5 is internally provided with a brake pad to achieve rapid braking. The rotating shaft 9 is connected with the first support rod 10 to achieve the rotation function of the platform.

[0031] Above the side of the support rod 8 is rotatably connected to a connecting rod 21, the other end of the connecting rod 21 is rotatably connected to a support plate 22, a pair of limit seats 23 are fixed on the support plate 22, a fixing plate 18 is arranged at the edge of the support plate 22, a fixing block 25 is clamped on the support plate 22, the fixing block 25 is transversely provided with a through hole, a cross bar 20 passes through the fixing block 25, one end of the cross bar 20 is fixedly connected to a linkage rod 17, one side of the linkage rod 17 is parallel to the cross bar 20, a rectangular seat 19 is sleeved on the linkage rod 17, the connecting rod 21 rotatably connected to the upper side of the support rod 8 is rotatably connected to the support plate 22, which can adjust the angle and direction of the platform, and at the same time, the stable fixation of the platform is realized through components such as the limit seats 23 and the fixing block 25. The fixing block 25 on the fixing plate 22 clamps the cross bar 20, and the linkage and balance of the platform are realized through components such as the linkage rod 17 and the rectangular seat 19.

[0032] Further, the support table 4 is composed of two movable plates spliced together. Both of the two movable plates are provided with insertion holes, and a plurality of insertion beams 3 are slidably connected. The support table 4 composed of the insertion beams and the two movable plates, and the insertion beams can slide in the insertion holes of the plates, which is used to adjust the area and layout of the support table 4.

[0033] The second support rod 11 is provided with a clamping plate 13, the clamping plate 13 is fixed on the left and right side edges of the second support rod 11, the clamping plate 13 is provided with a through hole, an insertion rod 12 is arranged on the clamping plate 13, and a second spring 14 is arranged between the insertion rod 12 and the clamping plate 13, which realizes the telescopic and fixing functions of the platform.

[0034] The lower surface of the first support rod 10 is provided with a clamping rod 15, a connection port 16 is opened at the upper end of the clamping rod 15, and the size of the connection port 16 is adapted to the thickness of the insertion rod 12. When the first support rod 10 is docked with the second support rod 11, the insertion rod 12 is inserted into the connection port 16, so as to realize the firm connection between the two, which is convenient for disassembly and assembly.

[0035] Further, one end of the moving base 1 close to the push handle 2 is rotatably connected to a rotating rod 26, the surface of the rotating rod 26 is rotatably connected to the push handle 2, a limit port 27 is arranged at one end of the rotating rod 26, a corresponding positioning rod 28 is inserted in the limit port 27, the positioning rod 28 is arranged on the connecting plate 29, one end of the connecting plate 29 is slidably connected to the moving base 1, and the lengths of the positioning rods 28 at both ends are different, so as to facilitate the adjustment of the angle and height of the push handle 2. The positioning rods 28 at both ends of the connecting plate 29 can adjust the length through a threaded connection method, which further enhances the flexibility of the device.

[0036] A pull rod 30 is provided on the push handle 2. One end of the pull rod 30 is fixedly connected to the push handle 2, and the other end is fixed to the linkage rod 17. By pulling the pull rod 30, the linkage rod 17 can be driven to move, thereby adjusting the position and angle of the support plate 22 to make the operation more convenient and reduce manual operation.

[0037] The second support rod 11 is rotatably connected to the support table 4 through a limit groove 31. This connection method not only ensures the stability of the support table 4 but also allows it to adjust the angle within a certain range to adapt to different working environments.

[0038] The working principle of the present invention is as follows: By setting a buckle 24 on the moving base 1, the buckle 24 is connected to the first support rod 10 through a rotating shaft 9, and the first support rod 10 can rotate around the buckle 24. The first support rod 10 can rotate to a vertical state. One end of the first support rod 10 is connected to the second support rod 11, and the first support rod 10 and the second support rod 11 can support and rotate with each other. The first support rod 10 and the second support rod 11 are initially in a folded state, and the first support rod 10 and the second support rod 1 are arranged in a V shape. The second support rod 11 is rotatably connected to the corresponding support platform 4. When the first support rod 10 and the second support rod 11 are folded, the position of the support platform 4 will be lower, and the two movable plates of the support platform 4 will be aligned. The UPS device and the battery pack can be placed on the support platform 4 for transfer, and then moved to the position that needs to be maintained. After removing the disassembled components, when it is necessary to maintain the charger or the battery pack, the first support rod 10 and the second support rod 11 can be stretched. The first support rod 10 and the second support rod 11 can become vertical states, and the first support rod 10 and the second support rod 11 can lift the vertical height of the support platform 4, so as to facilitate the maintenance of the components at a high position. When the vertical position of the support platform 4 changes, the two movable plates will separate from each other. When separating, the insertion beam 3 will appear, and the support platform 4 can be fixed through the insertion beam 3, and the support platform 4 will not rotate, so as to realize the stepping of personnel. By setting a clamping plate 13 on the second support rod 11 and a clamping rod 15 on the corresponding first support rod 10, when the second support rod 11 and the first support rod 10 are opened, the clamping rod 15 of the first support rod 10 can be clamped into the clamping plate 13 of the second support rod 11. When the clamping rod 15 of the first support rod 10 is clamped into the clamping plate 13, it can first push the insertion rod 12 on one side. When the insertion rod 12 is pushed, it can move outward from the clamping plate 13, and the clamping rod 15 can be clamped into the clamping plate 13. A second spring 14 is sleeved on the insertion rod 12 arranged on the clamping plate 13, and the second spring 14 can drive the whole insertion rod 12 to move downward, and the insertion rod 12 can be inserted into the connection port 16 of the clamping rod 15, so that the clamping rod 15 is fixed in the clamping plate 13, and the first support rod 10 and the second support rod 11 will not separate from each other. By setting a connecting cylinder 6 on the moving base 1, a support rod 8 can be slidably connected inside the connecting cylinder 6. One end of the support rod 8 is connected to a universal wheel 5, and the universal wheel 5 can facilitate the movement of the moving base 1. A first spring 7 is sleeved on the support rod 8, and the first spring 7 can drive the moving base 1 to move upward when no items are placed on the moving base 1, and the universal wheel 5 can be exposed, so as to realize the movement of the moving base 1. A connecting rod 21 is connected to the support rod 8, and the connecting rod 21 is connected to the support plate 22 of the guide groove 18. The support plate 22 can slide in the guide groove 18. When the moving position of the moving base 1 is different, the support plate 22 can move in the guide groove 18. When the support plate 22 is fixed, the moving base 1 will not move along the support rod 8. A fixing block 25 is arranged on the support plate 22,The cross bar 20 is inserted into the fixed block 25. The cross bar 20 will limit the support plate 22. The cross bar 20 is arranged on the linkage rod 17. The linkage rod 17 is slidably connected to the rectangular base 19. The linkage rod 17 can drive the cross bar 20 to move. The cross bar 20 can be inserted into or away from the fixed block 25, so as to realize the adjustment of the moving base 1. One end of the linkage rod 17 is provided with a pull rod 30. The pull rod 30 is arranged on the push handle 2. When the push handle 2 rotates, it can drive the pull rod 30 to move. The pull rod 30 can drive the whole linkage rod 17 to move, so as to control the movement of the cross bar 20. When an object is placed on the support table 4 of the moving base 1 or a staff member stands on it, the push handle 2 can be rotated. The push handle 2 can pull out the cross bar 20 from the fixed block 25. The fixed block 25 will not be limited and will move. During the movement, the moving base 1 will move downwards, and the universal wheel 5 can retract into the connecting cylinder 6, so that the connecting cylinder 6 can be connected to the ground, thus ensuring the stability of the moving base 1 and the support table 4, and ensuring the safety of the staff. By arranging a rotating rod 26 on the moving base 1 and a push handle 2 on the rotating rod 26, the push handle 2 can rotate through the rotating rod 26. One end of the rotating rod 25 is provided with a limiting port 27. A positioning rod 28 can be inserted into the limiting port 27. The positioning rod 28 is arranged on the connecting plate 29. The other end of the connecting plate 29 is also provided with a positioning rod 28. The length of the upper positioning rod 28 is greater than that of the lower positioning rod 28. When the connecting plate 29 moves, it can drive the lower positioning rod 28 to insert into the limiting port 27, so as to limit the rotating rod 26, and the rotation angle of the rotating rod 26 will be limited.,

[0039] The preferred embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art, various changes can be made without departing from the purpose of the present invention. These changes involve related technologies well-known to those skilled in the art, and all fall within the protection scope of this invention patent.

[0040] Many other changes and modifications can be made without departing from the concept and scope of the present invention. It should be understood that the present invention is not limited to the specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. A maintenance and repair platform based on a substation AC / DC integrated power supply, comprising a mobile base (1), characterized in that: Two buckles (24) are respectively provided on the left and right sides of the mobile base (1); a push handle (2) is provided on one side of the mobile base (1); four connecting tubes (6) are slidably connected to the four connecting tubes (6); support rods (8) are slidably connected inside the four connecting tubes (6); a universal wheel (5) is connected to the lower end of the connecting tube (6); a first spring (7) is sleeved between the support rod (8) and the connecting tube (6); a rotating shaft (9) is sleeved inside the buckle (24); the rotating shaft (9) is connected to the first supporting rod (10); the first supporting rod (10) is rotatably connected to the second supporting rod (11); a supporting platform (4) is fixedly provided at the top end of the second supporting rod (11).

2. The maintenance and repair platform based on the substation AC / DC integrated power supply according to claim 1, characterized in that: The upper side of the support rod (8) is rotatably connected to the connecting rod (21), and the other end of the connecting rod (21) is rotatably connected to the support plate (22). A limit seat (23) is fixed on the support plate (22), and a fixing plate (18) is provided at the edge of the support plate (22). A fixing block (25) is clamped on the support plate (22), and a through hole is horizontally opened on the fixing block (25). A cross bar (20) is passed through the fixing block (25), and one end of the cross bar (20) is fixedly connected to the linkage rod (17). One side of the linkage rod (17) is parallel to the cross bar (20), and a rectangular seat (19) is sleeved on the linkage rod (17).

3. The maintenance and repair platform based on the substation AC / DC integrated power supply according to claim 1, characterized in that: The support platform (4) is formed by splicing two movable plates, both movable plates are provided with insertion holes, and are slidably connected with a plurality of insertion beams (3).

4. The maintenance and repair platform based on the substation AC / DC integrated power supply according to claim 1, characterized in that: The second support rod (11) is provided with a clamping plate (13), the clamping plate (13) being fixed to the left and right edges of the second support rod (11), the clamping plate (13) being provided with a through hole, the clamping plate (13) being provided with an insertion rod (12), and the insertion rod (12) and the clamping plate (13) being provided with a second spring (14).

5. The maintenance and repair platform based on the substation AC / DC integrated power supply according to claim 1, characterized in that: A clamping rod (15) is provided on the lower surface of the first support rod (10), and a connecting opening (16) is provided at the upper end of the clamping rod (15), wherein the size of the connecting opening (16) is adapted to the thickness of the insertion rod (12).

6. The maintenance and repair platform based on the substation AC / DC integrated power supply according to claim 1, characterized in that: One end of the movable base (1) close to the push handle (2) is rotatably connected to a rotating rod (26); the surface of the rotating rod (26) is rotatably connected to the push handle (2); and a limiting opening (27) is provided on one end of the rotating rod (26).

7. The maintenance and repair platform based on the substation AC / DC integrated power supply according to claim 6, characterized in that: A corresponding positioning rod (28) is inserted into the limiting opening (27); the positioning rod (28) is arranged on a corresponding connecting plate (29); the positioning rod (28) at one end of the connecting plate (29) is slidably connected to the movable base (1); and the positioning rods (28) at both ends of the connecting plate (29) have different lengths.

8. The maintenance and repair platform based on the substation AC / DC integrated power supply according to claim 1, characterized in that: The push handle (2) is provided with a pull rod (30), one end of the pull rod (30) is fixedly connected to the push handle (2), and the other end of the pull rod (30) is fixed to the linkage rod (17).

9. The maintenance and repair platform based on the substation AC / DC integrated power supply according to claim 7, characterized in that: The positioning rods (28) at both ends of the connecting plate (29) can be adjusted in length by threaded connection.

10. The maintenance and repair platform based on the substation AC / DC integrated power supply according to claim 1, characterized in that: The second support rod (11) is rotatably connected to the support platform (4) via a limiting groove (31); the number of the universal wheels (5) is four, and brake pads for braking are provided inside the universal wheels (5).

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