Telescopic folding type maintenance safety platform device and using method thereof

Abstract

The invention discloses a telescopic folding type maintenance safety platform device and a using method thereof, and belongs to the technical field of tobacco industry formula elevated warehouse maintenance, the telescopic folding type maintenance safety platform device comprises a storage rack and a protection mechanism, one end of the protection mechanism is arranged in the storage rack, and the other end of the protection mechanism penetrates out of the storage rack; the protection mechanism comprises a telescopic supporting assembly arranged in the storage rack, a combined pedal is arranged on the upper portion of the telescopic supporting assembly, a folding limiting assembly is arranged on the lower portion of the telescopic supporting assembly, a positioning balance assembly is arranged on the lower portion of the folding limiting assembly, and the positioning balance assembly penetrates out of the storage rack. A balancing weight is arranged at the end, away from the telescopic supporting assembly, of the positioning balancing assembly. By means of the telescopic folding type protection device integrating a triangular supporting structure, balance weight balance and modular design, the stability and safety in aerial work of tobacco industry formula elevated warehouse maintenance are improved, and the problem that the efficiency of current maintenance work is bottleneck is solved.

Description

Technical Field

[0001] The invention relates to the technical field of maintenance of tobacco industry formula elevated warehouses, and in particular to a retractable and foldable maintenance safety platform device and a use method thereof. Background Art

[0002] At present, in the maintenance and construction operations of the tobacco industry formula high-bay warehouse, maintenance personnel are usually sent to the designated location with the help of the stacker platform and work on the stacker platform, or a temporary work platform is built on the racks of the high-bay warehouse for the workers to carry out construction work. This method not only has certain safety hazards, but also the workload of building a temporary work platform on the racks each time is very large, which affects the efficiency of maintenance. Especially when the racks in different parts of the high-bay warehouse need to be repaired, the maintenance work is carried out with the help of the stacker platform. The maintenance work surface is limited by the stacker platform and obviously does not meet the maintenance requirements. More temporary work platforms need to be built on the racks to carry out the maintenance of the racks in different positions. Not only does the maintenance efficiency decrease significantly, but the production progress may also be affected by the long maintenance time.

[0003] It is understandable that in the current field of tobacco industry formula elevated warehouse maintenance technology, the main problems are as follows: First, the stability is insufficient. Temporary work platforms often rely on single-point support or simple brackets, which can easily cause shaking or tipping due to uneven loads. This is especially true in high-altitude operations such as elevated warehouses, where the support stability of the work platform must be ensured to ensure the safety of the workers. Second, there are safety flaws. The existing work platforms have a single anti-rollover measure, which can easily cause workers to fall due to uneven force on the platform, causing it to overturn, tilt, or slide. Third, efficiency is low. Traditional work platforms cannot adapt to simultaneous operations in different areas. The maintenance work surface is limited by the stacker crane platform. Expanding the maintenance work surface requires temporarily building more work platforms on the racks. This requires repeated disassembly and assembly of the work platforms, which prolongs the maintenance cycle and increases the workload of the staff. Fourth, the adaptability is poor. Instead of using a temporary platform, an existing maintenance platform device is used for maintenance. The existing device is difficult to adapt to shelves of different sizes or complex spatial structures, and cannot meet various operation requirements. Summary of the Invention

[0004] In response to the problems existing in the prior art, the present invention provides a retractable and foldable maintenance safety platform device and a method of using the same. By integrating a triangular support structure, counterweight balance and a modularly designed retractable and foldable protective device, the stability and safety of high-altitude maintenance operations in tobacco industry formula elevated warehouses are improved, and the current bottleneck problem in maintenance operation efficiency is solved.

[0005] The technical solutions of the present invention are as follows: In a first aspect of the present invention, a retractable and foldable maintenance safety platform device is provided, comprising a storage rack and a protective mechanism, wherein one end of the protective mechanism is arranged inside the storage rack, and the other end of the protective mechanism is arranged outside the storage rack; the protective mechanism comprises a retractable supporting assembly arranged inside the storage rack, the upper portion of the retractable supporting assembly is provided with a combined pedal, the lower portion of the retractable supporting assembly is provided with a folding limit assembly, the lower portion of the folding limit assembly is provided with a positioning and balancing assembly, the positioning and balancing assembly is arranged outside the storage rack, and the end of the positioning and balancing assembly away from the retractable supporting assembly is provided with a counterweight block. In some embodiments of the present invention, the telescopic supporting assembly includes a mounting seat arranged on the upper part of the folding limit assembly, and a plurality of channel steel support beams are hinged on the mounting seat, and the end of the channel steel support beam away from the mounting seat is in contact with the inner wall of the storage rack; a middle storage tube is provided on the channel steel support beam, and a telescopic vertical plate is slidably connected to the interior of the middle storage tube, and the telescopic vertical plate is provided with a contact side plate close to the inner wall of the storage rack, and the surface of the contact side plate is in contact with the inner wall of the storage rack, and the lower part of the channel steel support beam forms a set angle structure with the upper part of the positioning and balancing assembly. In some embodiments of the present invention, a first positioning groove is provided on the side of the telescopic vertical plate, and first positioning bolts are threadedly connected to both sides of the middle receiving tube. The first positioning bolts pass through the end of the middle receiving tube and contact the first positioning groove. In some embodiments of the present invention, a side hole is provided on the side of the channel steel support beam, and a middle receiving tube is passed through the side hole. In some embodiments of the present invention, two telescopic compartments are axially provided inside the middle receiving tube, the opening directions of the two telescopic compartments are opposite, and the two telescopic compartments are slidably connected to telescopic vertical plates respectively. In some embodiments of the present invention, the positioning and balancing assembly includes a placement rack provided at the lower portion of the folding limit assembly, one end of the placement rack extending to the interior of the rack, and the other end of the placement rack extending to the exterior of the rack and provided with a counterweight; The lower part of the placement rack is provided with an anti-flip vertical plate, the middle part of the placement rack is provided with positioning side beams on both sides, the upper end of the positioning side beam is provided with an anti-flip vertical rod, the inner wall of the placement rack is provided with a sliding channel, the upper part of the placement rack is provided with a second positioning groove, and the second positioning groove is provided with a limit block. In some embodiments of the present invention, the folding limit assembly includes a sliding base frame slidably connected to the interior of the placement rack, sliding side frames are provided on both sides of the sliding base frame, and the sliding side frames are provided with sliding bars, and the sliding bars are slidably connected to the sliding channel; A threaded hole is formed at the upper end of the sliding side frame, a second positioning bolt is threadedly connected to the threaded hole, a limiting block is provided on the second positioning groove, and the lower end of the second positioning bolt is engaged with the upper surface of the limiting block. In some embodiments of the present invention, the end of the placement rack away from the telescopic supporting assembly is fixedly connected to a counterweight placement platform, and the counterweight placement platform is provided with a counterweight block. In some embodiments of the present invention, a reinforcing rib is fixedly connected to the surface of the positioning side beam, and the reinforcing rib is fixedly connected to one side of the placement rack. In a second aspect of the present invention, a method for using a retractable and foldable maintenance safety platform device is provided, comprising: One end of the placement rack is inserted into the interior of the storage rack, and the sliding base is set to slide inside the placement rack, and the end of the channel steel support beam away from the mounting seat contacts the inner wall of the storage rack. The channel steel support beam, the inner wall of the storage rack and the upper horizontal surface of the sliding base form a triangular structure; The second positioning bolt of the knob is turned to make its lower end engage with the limit block in the second positioning slot to limit the displacement of the sliding side frame, the telescopic vertical plate is pulled out to make the interference side plate interfere with the inner walls of both sides of the storage rack, the first positioning bolt is rotated to make its end interfere with the inner wall of the first positioning slot, the surface of the interference side plate maintains contact with the inner wall of the storage rack, a combined pedal is laid above the telescopic vertical plate, the anti-turnover vertical plate and the anti-turnover vertical rod are in contact with the side walls of the storage rack, and the counterweight is prevented from being placed on the counterweight platform; The operator stands on the combined pedal to perform maintenance operations.

[0006] One or more technical solutions of the present invention have the following beneficial effects: The present invention provides a retractable and foldable maintenance safety platform device and a method of using the same. The triangular support structure formed provides geometric stability for the platform, and a counterweight system is set to dynamically balance the working load to prevent rollover. At the same time, the modular design supports synchronous operation in multiple areas, shortening the maintenance cycle. The telescopic and folding components can realize rapid deployment and storage, adapting to complex spaces, and the anti-rollover and anti-slip structures have multiple levels of protection to reduce the risk of falling. Therefore, through the triangular support structure, dynamic counterweight balancing system and modular expansion design, combined with the adjustable telescopic support components, double anti-rollover limit structure and anti-slip combination pedals, a comprehensive improvement in the stability, safety, efficiency and adaptability of the aerial work platform is achieved.

[0007] In the working state, the structural design of the protective work platform is optimized through the setting of the protective platform mechanism, and maintenance work can be carried out in an unsupported state under the elevated warehouse with good stability. By extending the telescopic support assembly into the storage rack, the channel steel support beam is tilted and combined with the inner wall of the elevated warehouse storage rack and the horizontal surface of the upper end of the sliding chassis to form a triangular support structure. Since the triangular support structure has good stability, the operators can carry out maintenance work smoothly, and a good protective work platform is formed with the combined pedal combination. According to the needs of maintenance, the operators can configure multiple sets of this device to operate synchronously in different maintenance areas of the elevated warehouse, which greatly improves the efficiency of maintenance operations while ensuring stable and safe operations.

[0008] When the operator above the telescopic support assembly operates, it will exert downward pressure on the ends of the placement rack and the storage rack, causing the placement rack to have a tendency to flip over. When the positioning and balancing assembly is in use, the cooperation of the anti-flip vertical plate and the anti-flip vertical rod can limit the placement rack from flipping over, ensuring that the placement rack remains in a horizontal state at the storage rack port, thereby maintaining the stability of the telescopic support assembly and maintaining the balance and stability of the operator when working.

[0009] The sliding bar is used in conjunction with the sliding channel, so that the sliding side frame will not flip over easily, and the sliding base frame can always slide horizontally, which has the effect of assisting the positioning of the mounting seat. At the same time, the lower end of the second positioning bolt will form a card-engaging state with the surface of the second positioning groove. The second positioning bolt limits the displacement of the sliding base frame and the sliding side frame, so that the position of the mounting seat at the upper end of the sliding side frame remains stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is an overall structural diagram of a retractable and foldable maintenance safety platform device provided in Example 1 of the present invention; Figure 2 A schematic diagram of a partial structure of an elevated warehouse storage rack provided in Example 1 of the present invention; Figure 3 This is a schematic diagram of the structure of the protection platform provided in Example 1 of the present invention; Figure 4 This is a schematic diagram of the connection between the positioning side beam and the anti-rollover vertical rod provided in Example 1 of the present invention; Figure 5 This is a schematic diagram of the connection between the channel steel support beam and the middle receiving tube provided in Example 1 of the present invention; Figure 6 A schematic diagram of a partially exploded structure of a telescopic support assembly provided in Example 1 of the present invention; Figure 7 This is a schematic structural diagram of the positioning and balancing assembly provided in Example 1 of the present invention; Figure 8This is a schematic structural diagram of the folding limit assembly provided in Example 1 of the present invention.

[0011] In the figure: 1. Storage rack; 2. Combined pedal; 3. Protection mechanism; 31. Telescopic support assembly; 311. Mounting seat; 312. Channel steel support beam; 313. Side hole; 314. Middle storage tube; 315. Telescopic vertical plate; 316. Contact side plate; 317. Telescopic compartment; 318. First positioning bolt; 319. First positioning groove; 32. Positioning balance assembly; 321. Placement rack; 322. Positioning side beam; 323. Anti-rollover vertical bar; 324. Anti-rollover vertical plate; 325. Reinforcement rib; 326. Counterweight placement platform; 327. Sliding channel; 33. Folding limit assembly; 331. Sliding base frame; 332. Sliding side frame; 333. Second positioning groove; 334. Limit block; 335. Threaded hole; 336. Second positioning bolt; 337. Sliding bar; 34. Counterweight block. DETAILED DESCRIPTION

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Example 1 In a typical embodiment of the present invention, a retractable and foldable maintenance safety platform device is provided, comprising: a storage rack 1, wherein evenly distributed combination pedals 2 are provided inside the storage rack 1; the combination pedals 2 are provided on a protective mechanism 3, which is provided inside the storage rack 1, and the surface of the protective mechanism 3 extends through the exterior of the storage rack 1, and the protective mechanism 3 is used to improve the safety protection of workers; Among them, the protective mechanism 3 includes a telescopic supporting component 31 arranged inside the storage rack 1, a folding limit component 33 is provided at the lower end of the telescopic supporting component 31, a positioning and balancing component 32 is provided on the surface of the folding limit component 33, and a counterweight 34 is provided on the surface of the positioning and balancing component 32 away from the telescopic supporting component 31. Each combined pedal 2 is formed by hingedly connecting two pedals to each other. When laying and installing, it can be assisted by clamping or screw positioning. The connection method is appropriately adjusted according to the specific conditions of the construction site. By setting the telescopic supporting component 31, it is placed in When the folding limit assembly 33 is placed inside the storage rack 1, a relatively wide construction plane is formed for the storage rack 1. At the same time, the position of the folding limit assembly 33 on the positioning and balancing assembly 32 can be adjusted to control the tilt angle of the telescopic supporting assembly 31. The positioning and balancing assembly 32 can provide auxiliary protection. When the operator stands on the upper end of the telescopic supporting assembly 31 to operate, the positioning and balancing assembly 32 can maintain the stability of the telescopic supporting assembly 31. At the same time, the counterweight 34 cooperates with the positioning and balancing assembly 32 to form a lever-like effect, thereby enhancing the stabilizing effect of the positioning and balancing assembly 32 on the telescopic supporting assembly 31. like Figures 1 to 8When the folding mechanism 314 is in the process of being wound, the folding mechanism 314 is in the process of being wound. As shown in FIG, the telescopic supporting assembly 31 includes a mounting base 311 fixedly connected to the upper end of the folding limit assembly 33, the surface of the mounting base 311 is hingedly connected to a channel steel support beam 312, the other end of the channel steel support beam 312 is in contact with the inner wall of the storage rack 1, the interior of the channel steel support beam 312 is fixedly connected to a middle storage tube 314, the interior of the middle storage tube 314 is slidably connected to a telescopic vertical plate 315, the telescopic vertical plate 315 is fixedly connected to a contact side plate 316 near the inner wall of the storage rack 1, the lower end of the channel steel support beam 312 forms an acute angle with the horizontal plane of the upper end of the positioning and balancing assembly 32, the surface of the contact side plate 316 is in contact with the inner wall of the storage rack 1, the side of the telescopic vertical plate 315 is provided with a first positioning groove 319, and both sides of the middle storage tube 314 are threadedly connected to a first positioning bolt 318. The end of a positioning bolt 318 contacts the inner wall of the first positioning slot 319, and the inner wall of the channel steel support beam 312 is provided with a side hole 313. The inner wall of the side hole 313 is fixedly connected to the surface of the middle storage tube 314. The inner wall of the middle storage tube 314 is provided with two telescopic bins 317. The telescopic bins 317 are slidably connected to the surfaces of adjacent telescopic risers 315. When unfolding and using, the end of the channel steel support beam 312 needs to be moved against the inner wall of the storage rack 1. At this time, the channel steel support beam 312 is in an inclined state, and then the channel steel support beam 312, the inner wall of the storage rack 1 and the upper end horizontal plane of the sliding base 331 form a triangle. Due to the stability of the triangle, the operator standing on the combined pedal 2 can work in a relatively stable state, maintaining the operator's balance when working; At the same time, the telescopic riser 315 slides out from the inner wall of the middle storage tube 314, so that the interference side plate 316 contacts the inner wall of the storage rack 1. When the operator stands on the combined pedal 2 placed at the telescopic riser 315, the telescopic riser 315 at this location will tilt downward due to the effect of gravity. At this time, the interference side plate 316 limits the downward tilting trend of the end of the telescopic riser 315 away from the channel steel support beam 312, thereby ensuring the stability of the operator. The inner side of the first positioning groove 319 can be provided with a rubber strip. When the first positioning bolt 318 is screwed into the telescopic chamber 317 and contacts the rubber strip on the inner wall of the first positioning groove 319, the rubber strip can be squeezed and deformed to maintain the positioning and stability of the telescopic vertical plate 315, so that the contact side plate 316 is attached to the inner wall of the storage rack 1. The provision of the two telescopic chambers 317 ensures that the two telescopic vertical plates 315 do not affect each other when sliding, thereby maintaining the stability of the device. The deployment of the telescopic vertical plates 315 is convenient for operators to operate. Operators can configure multiple sets of the device according to maintenance needs to meet the requirements of operating multiple parts that need to be maintained at the same time, thereby greatly improving the efficiency of maintenance work. The positioning and balancing component 32 includes a placement frame 321 arranged on the surface of the folding limit component 33, one end of the placement frame 321 extends to the interior of the storage rack 1, the lower end of the placement frame 321 is fixedly connected to an anti-flip vertical plate 324, both sides of the placement frame 321 are fixedly connected to positioning side beams 322, the upper end of the positioning side beams 322 is fixedly connected to an anti-flip vertical rod 323, the inner wall of the placement frame 321 is provided with a sliding channel 327, the end of the placement frame 321 away from the telescopic supporting component 31 is fixedly connected to a counterweight placement platform 326, the counterweight block 34 is located on the inner side of the counterweight placement platform 326, and the surface of the positioning side beam 322 is fixedly connected The reinforcing rib 325 is fixedly connected to one side of the placement rack 321. When the placement rack 321 is in use, its end can be inserted into the interior of the storage rack 1. At this time, when the operator above operates the telescopic supporting assembly 31, it will press down on the end of the placement rack 321, causing the placement rack 321 to have a tendency to flip. The cooperation between the anti-flip vertical plate 324 and the anti-flip vertical rod 323 prevents the placement rack 321 from flipping, ensuring that the placement rack 321 remains horizontal on the ground at the elevator door, thereby maintaining the stability of the telescopic supporting assembly 31 and keeping the operator's balance when working; At the same time, the reinforcing ribs 325 can enhance the supporting effect of the positioning side beams 322 and the outer side of the high-bay storage rack, thereby preventing the positioning side beams 322 from bending and preventing the entire storage rack 321 from shifting, thereby ensuring the stability of the device. The counterweight placement platform 326 fixed to the end of the placement rack 321 can cooperate with the placement rack 321 to form a lever-like effect, so that the gravity generated at the other end of the placement rack 321 will be offset by the counterweight block 34 inside the counterweight placement platform 326. The weight of the counterweight block 34 can be configured according to actual usage. like Figure 1 、 Figure 3 and Figure 8When the folding limit assembly 33 is folded, the folding limit assembly 33 includes a sliding base frame 331 slidably connected to the interior of the placement frame 321 and a second positioning slot 333 opened at the upper end of the placement frame 321. The surface of the sliding base frame 331 is fixedly connected to the sliding side frame 332. The upper end of the sliding side frame 332 is provided with a threaded hole 335. The inner wall of the threaded hole 335 is threadedly connected to the second positioning bolt 336. The inner bottom wall of the second positioning slot 333 is fixedly connected to the limiting block 334. The lower end of the second positioning bolt 336 is engaged with the surface of the limiting block 334. The inner side of the sliding side frame 332 is fixedly connected to a sliding bar 337. The sliding bar 337 is slidably connected to the inner wall of the sliding channel 327. The sliding side frames 332 on both sides of the sliding base frame 331 slide When the cam 331 is in the unlocked position, the cam 332 is locked and the lock 333 is unlocked, so the cam 333 is locked.

[0014] When the present invention is in use, the end of the placement rack 321 is sent into the interior of the storage rack 1, and the sliding base frame 331 slides on the inner side of the placement rack 321, so that the other end of the channel steel support beam 312 conflicts with the inner wall of the storage rack 1. The channel steel support beam 312, the inner wall of the storage rack 1 and the upper horizontal surface of the sliding base frame 331 form a triangle. At this time, the second positioning bolt 336 is turned to make its lower end engage with the limit block 334 in the second positioning groove 333 to limit the displacement of the sliding side frame 332. Then, the combined pedal 2 on the channel steel support beam 312 is laid, and the telescopic vertical plate 315 is pulled out at the same time to make the conflicting side plate 316 conflict with the inner wall of the storage rack 1. The first positioning bolt 318 is rotated to make its end conflict with the inner wall of the first positioning groove 319. At this time, the conflicting side plate 316 The surface will maintain contact with the inner wall of the storage rack 1, and then the combined pedal 2 will be laid above the telescopic vertical plate 315. When an operator stands on the combined pedal 2, the anti-turnover vertical plate 324 cooperates with the anti-turnover vertical rod 323 to prevent the storage rack 321 from turning over. The reinforcing rib 325 prevents the positioning side beam 322 from bending. The counterweight placement platform 326 fixed at the end of the storage rack 321 cooperates with the storage rack 321 to form a lever-like effect. The gravity generated at the other end of the storage rack 321 will be offset by the counterweight block 34 inside the counterweight placement platform 326, so that the operator can perform maintenance work in a relatively stable state. The operator can configure multiple sets of this device according to maintenance needs to meet the requirements of simultaneous operation of multiple parts that need to be maintained, thereby greatly improving the efficiency of maintenance work.

[0015] The present invention provides a retractable and foldable maintenance safety platform device and a method of using the same. The triangular support structure formed provides geometric stability for the platform, and a counterweight system is set to dynamically balance the working load to prevent rollover. At the same time, the modular design supports synchronous operation in multiple areas, shortening the maintenance cycle. The telescopic and folding components can realize rapid deployment and storage, adapting to complex spaces, and the anti-rollover and anti-slip structures have multiple levels of protection to reduce the risk of falling. Therefore, through the triangular support structure, dynamic counterweight balancing system and modular expansion design, combined with the adjustable telescopic support components, double anti-rollover limit structure and anti-slip combination pedals, a comprehensive improvement in the stability, safety, efficiency and adaptability of the aerial work platform is achieved.

[0016] Although the above describes the specific embodiments of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without any creative work are still within the scope of protection of the present invention.

Claims

1. A retractable and foldable maintenance safety platform device, characterized in that: It includes a storage rack and a protective mechanism, one end of the protective mechanism is arranged inside the storage rack, and the other end of the protective mechanism is arranged outside the storage rack; the protective mechanism includes a telescopic supporting assembly arranged inside the storage rack, the upper part of the telescopic supporting assembly is provided with a combined pedal, the lower part of the telescopic supporting assembly is provided with a folding limit assembly, the lower part of the folding limit assembly is provided with a positioning and balancing assembly, the positioning and balancing assembly is arranged outside the storage rack, and the end of the positioning and balancing assembly away from the telescopic supporting assembly is provided with a counterweight block.

2. The retractable and foldable maintenance safety platform device according to claim 1, characterized in that: The telescopic supporting assembly includes a mounting seat arranged on the upper part of the folding limit assembly, and a plurality of channel steel support beams are hinged on the mounting seat, and the end of the channel steel support beam away from the mounting seat contacts the inner wall of the storage rack; a middle storage tube is provided on the channel steel support beam, and a telescopic vertical plate is slidably connected to the interior of the middle storage tube, and the telescopic vertical plate is provided with a contact side plate close to the inner wall of the storage rack, and the surface of the contact side plate contacts the inner wall of the storage rack, and the lower part of the channel steel support beam forms a set angle structure with the upper part of the positioning and balancing assembly.

3. The retractable and foldable maintenance safety platform device according to claim 2, characterized in that: A first positioning groove is provided on the side surface of the telescopic vertical plate, and first positioning bolts are threadedly connected to both sides of the middle receiving tube. The first positioning bolts pass through the end portion of the middle receiving tube and contact the first positioning groove.

4. The retractable and foldable maintenance safety platform device according to claim 2, characterized in that: A side hole is provided on the side of the channel steel support beam, and a middle receiving tube is passed through the side hole.

5. The retractable and foldable maintenance safety platform device according to claim 2, characterized in that: Two telescopic chambers are axially provided inside the middle receiving tube. The opening directions of the two telescopic chambers are opposite to each other. The two telescopic chambers are respectively slidably connected to the telescopic vertical plates.

6. The retractable and foldable maintenance safety platform device according to claim 1, characterized in that: The positioning and balancing assembly includes a placement rack provided at the lower portion of the folding limit assembly, one end of the placement rack extending to the interior of the rack, and the other end of the placement rack extending to the exterior of the rack and provided with a counterweight; The lower part of the placement rack is provided with an anti-flip vertical plate, positioning side beams are provided on both sides of the middle part of the placement rack, the upper ends of the positioning side beams are provided with anti-flip vertical rods, the inner wall of the placement rack is provided with a sliding channel, the upper part of the placement rack is provided with a second positioning groove, and the second positioning groove is provided with a limit block.

7. The retractable and foldable maintenance safety platform device according to claim 6, characterized in that: The folding limit assembly includes a sliding base frame slidably connected to the interior of the placement rack, sliding side frames are provided on both sides of the sliding base frame, and the sliding side frames are provided with sliding bars, and the sliding bars are slidably connected to the sliding track; A threaded hole is formed at the upper end of the sliding side frame, a second positioning bolt is threadedly connected to the threaded hole, a limiting block is provided on the second positioning groove, and the lower end of the second positioning bolt is engaged with the upper surface of the limiting block.

8. The retractable and foldable maintenance safety platform device according to claim 6, characterized in that: The end of the placement frame away from the telescopic supporting assembly is fixedly connected to a counterweight placement platform, and the counterweight placement platform is provided with a counterweight block.

9. The retractable and foldable maintenance safety platform device according to claim 6, characterized in that: A reinforcing rib is fixedly connected to the surface of the positioning side beam, and the reinforcing rib is fixedly connected to one side of the placement frame.

10. A method for using a retractable and foldable maintenance safety platform device according to any one of claims 1 to 9, characterized in that: include: One end of the placement rack is inserted into the interior of the storage rack, and the sliding base is set to slide inside the placement rack, and the end of the channel steel support beam away from the mounting seat contacts the inner wall of the storage rack. The channel steel support beam, the inner wall of the storage rack and the upper horizontal surface of the sliding base form a triangular structure; The second positioning bolt of the knob is turned to make its lower end engage with the limit block in the second positioning slot to limit the displacement of the sliding side frame, the telescopic vertical plate is pulled out to make the interference side plate interfere with the inner walls of both sides of the storage rack, the first positioning bolt is rotated to make its end interfere with the inner wall of the first positioning slot, the surface of the interference side plate maintains contact with the inner wall of the storage rack, a combined pedal is laid above the telescopic vertical plate, the anti-turnover vertical plate and the anti-turnover vertical rod are in contact with the side walls of the storage rack, and the counterweight is prevented from being placed on the counterweight platform; The operator stands on the combined pedal to perform maintenance operations.

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