A subway electrical equipment debugging and maintenance platform

Abstract

The utility model discloses a subway electrical equipment debugging and maintenance platform, which relates to the technical field of subway electrical equipment debugging and maintenance, and includes a support platform, an electric cylinder is installed on the top of the support platform, a maintenance platform body is fixedly connected to the top of the electric cylinder, and a mounting groove is opened on the top of the maintenance platform body. The utility model adopts the above structure, and when the control button is used, its waterproof plate can effectively protect the inner side of the mounting groove, and its protective film can effectively protect the face of the control button without hindering the use of the control button. When the screw is turned, the rotating shaft can make the end of the screw rotate in place, and the waterproof plate will move downward through the second slide groove, so that the waterproof plate and the sealing ring are tightly fitted, thereby achieving a good sealing effect between the waterproof plate and the mounting groove, while improving the waterproof performance of the control button, it can also prevent the control button from contacting with dust.

Description

Technical Field

[0001] The utility model belongs to the technical field of subway electrical equipment debugging and maintenance, in particular to a subway electrical equipment debugging and maintenance platform. Background Art

[0002] The subway electrical equipment debugging and maintenance platform is a professional equipment designed for the subway system. It integrates debugging, maintenance, and fault diagnosis. It can simulate the actual operating environment to ensure the efficient and safe operation of electrical equipment. It has data recording and analysis functions, is easy to operate, safe and reliable, and is an important tool for subway operation and maintenance.

[0003] However, the existing maintenance table still has some shortcomings. A plurality of control buttons are installed on the table top of the maintenance table, and the control buttons are all exposed. Firstly, they do not have a waterproof function. If water adheres to the surface of the control buttons, the water will flow into the interior of the maintenance table along the gaps of the control buttons, thereby affecting the normal driving of the control buttons. Secondly, a large amount of dust is easily attached to the surface of the control buttons, and the dust is extremely difficult to clean. Utility Model Content

[0004] In view of the problems mentioned in the background technology, the purpose of the utility model is to provide a subway electrical equipment debugging and maintenance platform to solve the problems raised by the above background technology.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A subway electrical equipment debugging and maintenance platform, comprising a support platform, an electric cylinder is installed on the top of the support platform, the top of the electric cylinder is fixedly connected to the maintenance platform body, a mounting groove is provided on the top of the maintenance platform body, a control button is installed on the inner bottom end of the mounting groove, a waterproof plate is slidably connected to the inner wall of the mounting groove, the waterproof plate covers the inner side of the mounting groove, a second slide groove matching the waterproof plate is provided on the inner wall of the mounting groove, the waterproof plate is slidably connected to the inner wall of the mounting groove through the second slide groove, a sealing ring is fixedly connected to the inner bottom end of the mounting groove, the position of the sealing ring is symmetrical to the position of the waterproof plate, a through opening matching the control button is provided on the top of the waterproof plate, a protective film is fixedly connected to the inner side of the through opening, the protective film covers the inner side of the through opening, and the position of the protective film is on the same horizontal line as the position of the control button On the top, the top of the waterproof plate is rotatably connected with a rotating shaft, the top of the inspection platform body is clamped with a fixing block, the top of the fixing block is provided with a first screw hole, the inner side of the first screw hole is threadedly connected with a screw, the bottom end of the screw is fixedly connected to the top of the rotating shaft, the top of the inspection platform body is provided with an inspection groove, a display is installed inside the inspection platform body, the face of the inspection platform body is threadedly connected with a protective plate, the front side of the protective plate is provided with a rectangular opening, the position of the rectangular opening is symmetrical with the position of the display, and the installation of the waterproof plate can effectively protect the inner side of the installation groove, and the protective film can effectively protect the surface of the control button without hindering the normal use of the control button, and the sealing ring can effectively seal the connection point between the waterproof plate and the installation groove, thereby achieving good waterproof and dustproof effects.

[0007] As a preferred technical solution, a telescopic rod is fixedly connected to the top of the support platform, the telescopic rod is fixedly connected to the four sides of the top of the support platform near the corners, the electric cylinder is installed at the center position of the top of the support platform, and the top of the telescopic rod is fixedly connected to the bottom end of the maintenance platform body. By installing the telescopic rod, the bottom end of the maintenance platform can be effectively supported and limited, thereby effectively improving the stability of the height adjustment of the maintenance platform.

[0008] As a preferred technical solution, a protective shell is fixedly connected to the bottom end of the maintenance platform body, and the inner wall of the protective shell is slidably connected to the outer wall of the support platform. A first sliding groove matching the protective shell is opened on the outer wall of the support platform, and the inner wall of the protective shell is slidably connected to the outer wall of the support platform through the first sliding groove. The height of the maintenance platform can be adjusted by installing an electric cylinder, and the first sliding groove can facilitate the sliding of the protective shell, and the protective shell can effectively protect the top of the support platform.

[0009] As a preferred technical solution, a vent is opened on the front side of the protective shell, and the position of the vent is symmetrical to the position of the electric cylinder. A dustproof plate is fixedly connected to the inner side of the vent, and the dustproof plate covers the inner side of the vent. Through the opening of the vent, the electric cylinder can be effectively ventilated and heat dissipated, and the dustproof plate can prevent a large amount of dust or pollutants from being adsorbed on the surface of the electric cylinder.

[0010] As an optimal technical solution, a first slot is provided at the top of the fixed block, and a second slot is provided on the inner wall of the first slot. The first slot and the second slot both pass through the top of the fixed block and the inspection platform body, a circular groove is provided at the inner bottom end of the first slot, and a retaining spring is installed at the inner bottom end of the circular groove. The first clamping block is clamped on the inner side of the first slot, and the second clamping block matching the second slot is fixedly connected to the outer side of the first clamping block. The second clamping block is clamped to the top of the retaining spring through the second slot. A sealing block is fixedly connected to the top of the sealing block, and a protrusion is fixedly connected to the top of the sealing block. The shape of the protrusion corners is arc-shaped. The first and second clamping blocks are clamped into the circular groove, and then the position of the second clamping block is fixed by the retaining spring, so that the position of the fixed block can be effectively limited. When the fixed block needs to be removed, the first clamping block can be pulled out.

[0011] As a preferred technical solution, a second screw hole is opened on the front side of the protective plate, and the second screw hole passes through the surface of the protective plate and the support platform. The inner side of the second screw hole is threadedly connected with a bolt, and the rear side of the bolt is threadedly connected to the inside of the maintenance platform body through the second screw hole. The protective plate is threadedly connected to the surface of the maintenance platform body through the second screw hole and the bolt. By screwing in the bolt, the position of the protective plate can be effectively fixed, and displacement of the protective plate can be avoided.

[0012] As a preferred technical solution, the bottom end of the support platform is fixedly connected with a support leg, and the support leg is fixedly connected to the four sides of the bottom end of the support platform near the corners. The bottom end of the support platform is fixedly connected to a limit frame, and the inner side of the limit frame is fixedly connected with a rubber pad, and the rubber pad covers the inner side of the limit frame. The position of the bottom end of the rubber pad is on the same horizontal line as the position of the bottom end of the support leg. By fixing the support leg, the bottom end of the support platform can be effectively supported. The rubber pad has good anti-slip ability and rubber shock absorption ability, thereby effectively improving the stability of the support platform's placement.

[0013] In summary, the utility model mainly has the following beneficial effects:

[0014] First, when the control button is used, the waterproof plate can effectively protect the inner side of the installation groove, and the protective film can effectively protect the surface of the control button without hindering the use of the control button to prevent the control button from being bumped. To improve the stability of the waterproof plate position fixation, the user can turn the screw, and the shaft can make the end of the screw rotate in place, and the waterproof plate will move downward through the second slide groove, so that the waterproof plate and the sealing ring are closely fitted, thereby achieving a good sealing effect between the waterproof plate and the installation groove, while improving the waterproof performance of the control button, it can also prevent the control button from contacting with dust, thereby effectively improving the service life of the control button;

[0015] Second, due to the existence of the electric cylinder, when the electric cylinder is started, the electric cylinder can push the inspection platform body to move upward or downward, which is beneficial for the user to adjust the height of the inspection platform body. It will be more efficient to adjust the inspection platform body to a height that is convenient for the user to operate. The telescopic rod can effectively support and limit the bottom end of the inspection platform body without hindering the adjustment of the height of the inspection platform body, thereby improving the stability of the height adjustment of the inspection platform body. Due to the opening of the vent, the electric cylinder can be effectively ventilated and dissipated, and the dustproof plate can block a large amount of dust and pollutants, thereby increasing the service life of the electric cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the fixed block structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the inner structure of the installation groove of the utility model;

[0019] Figure 4 This utility model Figure 3 A schematic diagram of the enlarged structure of part A;

[0020] Figure 5 It is a side structural schematic diagram of the utility model.

[0021] 1. The support table is provided with a plurality of support members, each of which is provided with a plurality of support members, and a plurality of support members are provided with a plurality of support members. The support members are provided with a plurality of support members, each of which is provided with a plurality of support members. DETAILED DESCRIPTION

[0022] Example

[0023] refer to Figures 1 to 5A subway electrical equipment debugging and maintenance platform of the present embodiment includes a support platform 1, an electric cylinder 2 is installed on the top of the support platform 1, and a maintenance platform body 4 is fixedly connected to the top of the electric cylinder 2. A mounting groove 9 is provided on the top of the maintenance platform body 4, and a control button 10 is installed on the inner bottom end of the mounting groove 9. A waterproof plate 13 is slidably connected to the inner wall of the mounting groove 9, and the waterproof plate 13 covers the inner side of the mounting groove 9. A second slide groove 12 matching the waterproof plate 13 is provided on the inner wall of the mounting groove 9. The waterproof plate 13 is slidably connected to the inner wall of the mounting groove 9 through the second slide groove 12. A sealing ring 11 is fixedly connected to the inner bottom end of the mounting groove 9, and the position of the sealing ring 11 is symmetrical to the position of the waterproof plate 13. The top of the waterproof plate 13 is provided with a through hole 14 matching the control button 10, and a protective film 15 is fixedly connected to the inner side of the through hole 14, and the protective film 15 covers the inner side of the through hole 14, and the position of the protective film 15 is on the same horizontal line as the position of the control button 10. The top of the waterproof plate 13 is rotatably connected with a rotating shaft 19, and the top of the maintenance platform body 4 is clamped with a fixing block 16, and the top of the fixing block 16 is provided with a first screw hole 17, and the inner side of the first screw hole 17 is threadedly connected with a screw 18, and the bottom end of the screw 18 is fixedly connected to the top of the rotating shaft 19, and the top of the maintenance platform body 4 is provided with an inspection groove 36, and a display 33 is installed inside the maintenance platform body 4, and the surface of the maintenance platform body 4 is threadedly connected with a protective The front side of the protective plate 31 is provided with a rectangular opening 32, and the position of the rectangular opening 32 is symmetrical with the position of the display 33. The subway electrical equipment debugging and maintenance platform is an indispensable professional equipment in subway operation and maintenance. Its main functions include debugging, maintenance and data recording and analysis. Debugging can simulate the actual operating environment of subway trains, accurately debug electrical equipment, and ensure that equipment performance meets subway operation requirements. Maintenance provides comprehensive electrical equipment maintenance services, including fault diagnosis, performance evaluation, etc., to ensure that the equipment is safe and reliable. Data recording and analysis can record various data in the debugging and maintenance process, and analyze and process them through software, providing a scientific basis for equipment maintenance and maintenance. Its structural features are equipped with advanced control systems and a variety of testing instruments, such as oscilloscopes, multimeters, etc., to ensure the accuracy and efficiency of debugging and maintenance. The working platform is sturdy and durable, and can withstand the weight and impact of electrical equipment to ensure safe operation. Its operating characteristics adopt a friendly human-computer interaction interface and intuitive operation methods, so that operators can debug and maintain equipment conveniently and quickly. The debugging and maintenance platform can quickly and accurately complete the debugging and maintenance of electrical equipment, improve the operation efficiency and safety of subway trains, and the debugging and maintenance platform has strict safety protection measures, such as electrical isolation, overload protection, short-circuit protection, etc., to ensure the safety of personnel and equipment during maintenance and debugging.

[0024] refer to Figure 5The top of the support platform 1 is fixedly connected with a telescopic rod 3, which is fixedly connected to the four sides of the top of the support platform 1 near the corners. The electric cylinder 2 is installed in the center position of the top of the support platform 1, and the top of the telescopic rod 3 is fixedly connected to the bottom end of the maintenance platform body 4. The telescopic rod 3 includes a movable rod and a sleeve rod. The movable rod is sleeved on the inner side of the sleeve rod, and the bottom end of the sleeve rod is fixedly connected to the top of the support platform 1. The top of the movable rod is fixedly connected to the bottom end of the maintenance platform body 4. Due to the existence of the electric cylinder 2, when the electric cylinder 2 is started, the electric cylinder 2 can push the maintenance platform body 4 to move upward or downward, which is beneficial for the user to adjust the height of the maintenance platform body 4. It will be more efficient to adjust the maintenance platform body 4 to a height that is convenient for the user to operate. The telescopic rod 3 can effectively support and limit the bottom end of the maintenance platform body 4 without interfering with the adjustment of the height of the maintenance platform body 4, thereby improving the stability of the height adjustment of the maintenance platform body 4.

[0025] refer to Figure 1 The bottom end of the inspection platform body 4 is fixedly connected with a protective shell 6, and the inner wall of the protective shell 6 is slidably connected to the outer wall of the support platform 1. A first slide groove 5 matching the protective shell 6 is opened on the outer wall of the support platform 1, and the inner wall of the protective shell 6 is slidably connected to the outer wall of the support platform 1 through the first slide groove 5. A vent 7 is opened on the front side of the protective shell 6, and the position of the vent 7 is symmetrical with the position of the electric cylinder 2. A dustproof plate 8 is fixedly connected to the inner side of the vent 7, and the dustproof plate 8 covers the inner side of the vent 7. Due to the existence of the protective shell 6, the protective shell 6 can effectively protect the position of the electric cylinder 2. The opening of the slide groove can facilitate the synchronization of the protective shell 6 and the inspection platform body 4, and can prevent them from being bumped. Due to the opening of the vent 7, the electric cylinder 2 can be effectively ventilated and dissipated, and the dustproof plate 8 can block a large amount of dust and pollutants, thereby improving the service life of the electric cylinder 2.

[0026] refer to Figures 1 to 4A first card slot 20 is provided at the top of the fixed block 16, and a second card slot 21 is provided on the inner wall of the first card slot 20. The first card slot 20 and the second card slot 21 both penetrate the top of the fixed block 16 and the inspection platform body 4. A circular groove 26 is provided at the inner bottom end of the first card slot 20, and a retaining spring 27 is installed at the inner bottom end of the circular groove 26. A first card block 22 is connected to the inner side of the first card slot 20, and a second card block 23 matching the second card slot 21 is fixedly connected to the outer side of the first card block 22. The second card block 23 is connected to the top of the retaining spring 27 through the second card slot 21. A sealing block 24 is fixedly connected to the top of the first card block 22, and the top of the sealing block 24 is fixedly connected to the A protrusion 25 is connected, and the shape of the corner of the protrusion 25 is arc-shaped. By inserting the first clamping block 22, the second clamping block 23 can be clamped into the circular groove 26, and then the first clamping groove 20 is rotated by the protrusion 25. When the positions of the second clamping block 23 and the second clamping groove 21 are not corresponding, the position of the first clamping block 22 will be limited and connected, and the retaining spring 27 can perform secondary limit fixing on the position of the second clamping block 23. When the fixed block 16 needs to be removed, the first clamping block 22 is rotated to pull it out of the first clamping groove 20, thereby achieving the purpose of facilitating the disassembly and assembly of the fixed block 16, and it is also beneficial for the user to perform maintenance on the waterproof board 13 later.

[0027] refer to Figure 1 and Figure 5 A second screw hole 34 is provided on the front side of the protective plate 31, and the second screw holes 34 penetrate the surface of the protective plate 31 and the support platform 1. The inner side of the second screw hole 34 is threadedly connected with a bolt 35, and the rear side of the bolt 35 is threadedly connected to the inside of the maintenance platform body 4 through the second screw hole 34. The protective plate 31 is threadedly connected to the surface of the maintenance platform body 4 through the second screw hole 34 and the bolt 35. By screwing in the bolt 35, the position of the protective plate 31 can be effectively fixed, and the protective plate 31 can be prevented from being displaced. When the protective plate 31 needs to be removed, the bolt 35 can be screwed out of the second screw hole 34.

[0028] refer to Figure 5 The bottom end of the support platform 1 is fixedly connected with a support leg 28, and the support leg 28 is fixedly connected to the four sides of the bottom end of the support platform 1 near the corners. The bottom end of the support platform 1 is fixedly connected to a limit frame 29, and the inner side of the limit frame 29 is fixedly connected with a rubber pad 30. The rubber pad 30 covers the inner side of the limit frame 29, and the position of the bottom end of the rubber pad 30 is on the same horizontal line as the position of the bottom end of the support leg 28. Due to the existence of the support leg 28, the support leg 28 can effectively support the bottom end of the support platform 1, and the rubber pad 30 has good anti-slip ability and rubber shock absorption ability, and can also share the force area of ​​the bottom end of the support leg 28, thereby effectively improving the stability of the support platform 1.

[0029] Principle and advantages of use: Due to the existence of the legs 28, the legs 28 can effectively support the bottom of the support platform 1, and the rubber pads 30 have good anti-slip and rubber shock absorption capabilities, and can also share the force area at the bottom of the legs 28, thereby effectively improving the stability of the support platform 1. When using the control button 10, the waterproof plate 13 can effectively protect the inner side of the mounting groove 9, and the protective film 15 can effectively protect the face of the control button 10 without hindering the use of the control button 10 to avoid the control button 10 from being bumped. In order to improve the stability of the fixed position of the waterproof plate 13, the user can screw the screw 18, and the shaft 19 can make the screw 1 The end of the control button 10 rotates in place, and the waterproof plate 13 moves downward through the second slide groove 12, so that the waterproof plate 13 is closely fitted with the sealing ring 11, thereby achieving a good sealing effect between the waterproof plate 13 and the installation groove 9, while improving the waterproof performance of the control button 10, it can also prevent the control button 10 from contacting with dust, thereby effectively improving the service life of the control button 10. Due to the existence of the electric cylinder 2, when the electric cylinder 2 is started, the electric cylinder 2 can push the inspection platform body 4 to move upward or downward, thereby facilitating the user to adjust the height of the inspection platform body 4. It will be more efficient to adjust the inspection platform body 4 to a height that is convenient for the user to operate. The telescopic rod 3 can be While adjusting the height of the inspection platform body 4, the bottom end of the inspection platform body 4 can be effectively supported and limited, thereby improving the stability of the height adjustment of the inspection platform body 4. Due to the existence of the protective shell 6, the protective shell 6 can effectively protect the position of the electric cylinder 2. The opening of the slide groove can facilitate the synchronization of the protective shell 6 and the inspection platform body 4 to avoid them from being bumped. Due to the opening of the vent 7, the electric cylinder 2 can be effectively ventilated and cooled, and the dustproof plate 8 can block a large amount of dust and pollutants, thereby improving the service life of the electric cylinder 2. By inserting the first clamping block 22, the second clamping block 23 can be inserted into the circular groove 26, and then the first clamping block 25 is rotated to rotate the second clamping block 23. A card slot 20, when the second card block 23 and the second card slot 21 are not in correspondence, the position of the first card block 22 will be limited and connected, and the retaining spring 27 can perform secondary limit fixation on the position of the second card block 23. When the fixing block 16 needs to be removed, the first card block 22 is rotated to pull it out of the first card slot 20, thereby achieving the purpose of facilitating the disassembly and assembly of the fixing block 16, and also facilitating the user to perform maintenance on the waterproof plate 13 at a later stage. By screwing in the bolt 35, the position of the protective plate 31 can be effectively fixed, and the displacement of the protective plate 31 can be avoided. When the protective plate 31 needs to be removed, the bolt 35 can be screwed out of the second screw hole 34.

Claims

1. A subway electrical equipment debugging and maintenance platform, comprising a support platform (1), characterized in that: An electric cylinder (2) is installed at the top of the support platform (1), and the top of the electric cylinder (2) is fixedly connected to a maintenance platform body (4). A mounting groove (9) is provided at the top of the maintenance platform body (4), and a control button (10) is installed at the inner bottom end of the mounting groove (9). A waterproof plate (13) is slidably connected to the inner wall of the mounting groove (9), and the waterproof plate (13) covers the inner side of the mounting groove (9). A second sliding groove (12) matching the waterproof plate (13) is provided on the inner wall of the mounting groove (9), and the waterproof plate (13) is slidably connected to the inner wall of the mounting groove (9) through the second sliding groove (12). A sealing ring (11) is fixedly connected to the inner bottom end of the mounting groove (9), and the position of the sealing ring (11) is symmetrical with the position of the waterproof plate (13). A through opening (14) matching the control button (10) is provided at the top of the waterproof plate (13), and the inner side of the through opening (14) is provided with a through opening (14). A protective film (15) is fixedly connected to the side, the protective film (15) covers the inner side of the through opening (14), the position of the protective film (15) and the position of the control button (10) are on the same horizontal line, the top of the waterproof plate (13) is rotatably connected to a rotating shaft (19), the top of the inspection platform body (4) is clamped with a fixing block (16), the top of the fixing block (16) is provided with a first screw hole (17), the inner side of the first screw hole (17) is threadedly connected with a screw rod (18), the bottom end of the screw rod (18) is fixedly connected to the top of the rotating shaft (19), the top of the inspection platform body (4) is provided with an inspection groove (36), a display (33) is installed inside the inspection platform body (4), the surface of the inspection platform body (4) is threadedly connected with a protective plate (31), the front side of the protective plate (31) is provided with a rectangular opening (32), the position of the rectangular opening (32) is symmetrical with the position of the display (33).

2. A subway electrical equipment debugging and maintenance platform according to claim 1, characterized in that: The top of the support platform (1) is fixedly connected to a telescopic rod (3), and the telescopic rod (3) is fixedly connected to the four sides of the top of the support platform (1) near the corners. The electric cylinder (2) is installed at the center position of the top of the support platform (1), and the top of the telescopic rod (3) is fixedly connected to the bottom end of the maintenance platform body (4).

3. A subway electrical equipment debugging and maintenance platform according to claim 1, characterized in that: A protective shell (6) is fixedly connected to the bottom end of the inspection platform body (4); the inner wall of the protective shell (6) is slidably connected to the outer wall of the support platform (1); a first sliding groove (5) matching the protective shell (6) is provided on the outer wall of the support platform (1); the inner wall of the protective shell (6) is slidably connected to the outer wall of the support platform (1) via the first sliding groove (5).

4. A subway electrical equipment debugging and maintenance platform according to claim 3, characterized in that: A vent (7) is provided on the front side of the protective shell (6), the position of the vent (7) is symmetrical with the position of the electric cylinder (2), and a dustproof plate (8) is fixedly connected to the inner side of the vent (7), and the dustproof plate (8) covers the inner side of the vent (7).

5. The subway electrical equipment debugging and maintenance platform according to claim 1 is characterized by: The top of the fixing block (16) is provided with a first clamping groove (20), the inner wall of the first clamping groove (20) is provided with a second clamping groove (21), the first clamping groove (20) and the second clamping groove (21) both penetrate the top of the fixing block (16) and the inspection platform body (4), the inner bottom end of the first clamping groove (20) is provided with a circular groove (26), the inner bottom end of the circular groove (26) is provided with a clamping spring (27), the inner side of the first clamping groove (20) is clamped with a first clamping block (22), the outer side of the first clamping block (22) is fixedly connected with a second clamping block (23) matching the second clamping groove (21), the second clamping block (23) is clamped with the top of the clamping spring (27) through the second clamping groove (21), the top of the first clamping block (22) is fixedly connected with a sealing block (24), the top of the sealing block (24) is fixedly connected with a protrusion (25), and the corner shape of the protrusion (25) is arc-shaped.

6. A subway electrical equipment debugging and maintenance platform according to claim 1, characterized in that: A second screw hole (34) is provided on the front side of the protective plate (31), and the second screw hole (34) penetrates the surface of the protective plate (31) and the support platform (1). A bolt (35) is threadedly connected to the inner side of the second screw hole (34), and the rear side of the bolt (35) is threadedly connected to the inside of the inspection platform body (4) through the second screw hole (34). The protective plate (31) is threadedly connected to the surface of the inspection platform body (4) through the second screw hole (34) and the bolt (35).

7. The subway electrical equipment debugging and maintenance platform according to claim 1 is characterized by: The bottom end of the support platform (1) is fixedly connected to a support leg (28), and the support leg (28) is fixedly connected to the four sides of the bottom end of the support platform (1) near the corners. The bottom end of the support platform (1) is fixedly connected to a limit frame (29), and the inner side of the limit frame (29) is fixedly connected to a rubber pad (30), and the rubber pad (30) covers the inner side of the limit frame (29). The position of the bottom end of the rubber pad (30) is on the same horizontal line as the position of the bottom end of the support leg (28).

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