Quick positioning and fixing structure and fireproof shed

Abstract

The utility model relates to the technical field of fireproof sheds, in particular to a rapid positioning and fixing structure and a fireproof shed, the rapid positioning and fixing structure is added, the fireproof shed can be moved to the back of a spontaneous combustion automobile through manual work or intelligent mobile equipment, and a first clamping hook and a second clamping hook extend between two wheels of the automobile; the inner sides of the two wheels of the automobile are clamped respectively, the inner sides of the two wheels of the automobile are firmly clamped through the first clamping hook and the second clamping hook under the tension action of the first spring and the second spring, the frame is prevented from shaking in the left-right direction, and rapid left-right positioning is achieved; through cooperation of the hook parts of the first clamping hook and the second clamping hook and the cross rod, front-back fixing of the frame is achieved, after front-back and left-right fixing is completed, an operator can press down the pressing switch, the telescopic assembly is driven by the driving assembly to stretch forwards, the operator does not need to manually fix the frame, and personnel are prevented from being hurt by a fire disaster.

Description

Technical Field

[0001] This utility model relates to the field of fireproof shed technology, specifically to a quick positioning and fixing structure and a fireproof shed. Background Technology

[0002] Currently, electric vehicle batteries are chemically reactive and flammable. When a battery experiences thermal runaway, a violent reaction occurs inside, releasing oxygen and a huge amount of heat. Due to the limited space inside the battery pack, this heat will accumulate in a short time. If the heat and gas are not released in time, the battery may burn or even explode. Although the power of a battery explosion is not as great as that of explosives, it will be accompanied by the splashing of copper foil, electrolyte, and other substances. These substances, which can reach temperatures of nearly 1000°C, can not only burn and corrode the skin, but also create new ignition points, damaging other vehicles and nearby objects. If people do not have time to escape, they are easily injured.

[0003] To address these significant safety hazards and ensure personal and property safety, some manufacturers have designed a fireproof shed with fire-resistant features. Such structures can be referenced from a novel electric mobile telescopic electric vehicle fireproof cover disclosed in Chinese Patent Publication No. CN114367069A. It comprises high-silica fire-resistant fiber cloth, a supporting frame, round holes, a pull rope, an X-shaped rectangular steel pipe, a cable, an electric trailer, directional wheels, motor wheels, a trailer handle, a control button, a trailer chassis, a battery, omnidirectional brake wheels, a controller, frame wheel grooves, and a trailer base. In use, i.e., when the electric vehicle spontaneously combusts, the omnidirectional brake wheels are manually opened, the electric trailer is pulled, and the fireproof cover is moved to the side of the burning electric vehicle and aligned. The control button is then activated, and the battery supplies power to the motor wheels through the controller and cable. The motor wheels pull the fireproof cover, causing it to move automatically and open. The high-silica fire-resistant fiber cloth surrounds the left and right sides of the electric vehicle. Pulling the pull rope then lowers the rolled-up fiber cloth to surround the front and rear of the electric vehicle. The round holes on both sides allow for proper ventilation to prevent the accumulation and expansion of gas and heat, and facilitate the connection of fire hoses for water spraying and fire extinguishing.

[0004] However, existing automotive fireproof covers require the cover to be moved next to the spontaneously combusting electric vehicle and aligned properly. Because the cover is prone to wobbling during extension, it usually needs to be manually supported at one end to prevent it from shifting. Furthermore, since spontaneous combustion of a car may be accompanied by an explosion, approaching the burning vehicle poses a significant safety hazard.

[0005] Therefore, the above problems urgently need to be solved. Utility Model Content

[0006] To address the technical deficiencies in the background technology, this utility model proposes a rapid positioning and fixing structure and a fireproof canopy, which solves the aforementioned technical problems and meets practical needs. The specific technical solution is as follows:

[0007] A quick positioning and fixing structure, comprising:

[0008] The frame has a first caster at its bottom;

[0009] The positioning mechanism includes a crossbar located at the bottom front end of the frame and used to block the vehicle wheels in the front-rear direction, with mounting brackets at both ends of the crossbar;

[0010] The quick-fixing mechanism includes a first hook and a second hook rotatably mounted on the two mounting brackets, a first spring connected to the crossbar and pulling the first hook to the left, and a second spring connected to the crossbar and pulling the second hook to the right. The first hook and the second hook can extend between the two wheels of the car and respectively lock the inner sides of the two wheels of the car.

[0011] Specifically, the front end of the first hook is provided with a first inclined surface for guiding the first hook to engage with the inside of the car wheel; the front end of the second hook is provided with a second inclined surface for guiding the second hook to engage with the inside of the car wheel.

[0012] A fireproof canopy, including the aforementioned quick-positioning and fixing structure, further includes:

[0013] A telescopic assembly, disposed within the frame, is extendable forward beyond the frame to form a fireproof space surrounding the vehicle;

[0014] A drive component for driving the telescopic component to extend forward or retract backward.

[0015] Specifically, the drive assembly is located within the frame, and the drive assembly includes a scissor arm, sliders hinged to the upper and lower arms at the rear end of the scissor arm, a tension spring connected between the two sliders, and a reset mechanism for driving the two sliders to move in opposite directions.

[0016] The two sliders slide along the frame in the vertical direction;

[0017] The front end of the scissor arm is hinged to the telescopic assembly to drive the telescopic assembly to extend and retract in the front-back direction.

[0018] Specifically, the telescopic assembly includes at least two fireproof inner frames that are sequentially nested from the inside out, a second fireproof plate fixed to the fireproof inner frame, and a second caster located at the bottom of the fireproof inner frame. The front end of the scissor arm is hinged to the outermost fireproof inner frame.

[0019] Specifically, a sliding rail assembly that extends and retracts in the front-to-back direction is provided between the frame and the innermost fireproof inner frame, and the sliding rail assembly that extends and retracts in the front-to-back direction is provided between two adjacent fireproof inner frames.

[0020] Specifically, each layer of the fireproof inner frame is provided with a pulling structure at the rear end, through which the multi-layered fireproof inner frames are pulled forward and unfolded in sequence.

[0021] The outermost fireproof inner frame has a baffle at its front end, which drives the remaining fireproof inner frames to retract and retract into the frame.

[0022] Specifically, the reset mechanism includes a turntable rotatably disposed at the center of the front end of the frame and pulleys rotatably disposed on the upper and lower sides of the front end of the frame. Both sliders are connected to pull ropes. The pull rope located above passes around the upper pulley and is connected to the turntable. The pull rope located below passes around the lower pulley and is connected to the turntable. The turntable is connected to a handle.

[0023] Specifically, the drive assembly further includes a locking mechanism, which includes a ratchet fixed to the turntable, a pawl fixed to the frame and capable of locking the ratchet, and a control box for driving the pawl. The control box is fixed to the frame and has a push switch on its outer side.

[0024] Specifically, the drive assembly has two sets, which are respectively located on the left and right sides of the frame, and adjacent turntables are connected by a transmission rod.

[0025] The beneficial effects of this utility model are as follows:

[0026] The rapid positioning and fixing structure and fireproof canopy of this application include a rapid positioning and fixing structure. The fireproof canopy can be moved behind the spontaneously combusting vehicle manually or using a smart mobile device. Then, the frame of the fireproof canopy is aligned with the vehicle, and the frame is driven forward. This causes the first and second hooks to extend between the two wheels of the vehicle, respectively locking the inner sides of the two wheels. The tension of the first and second springs ensures that the first and second hooks are stably locked to the inner sides of the two wheels, preventing the frame from swaying left and right, thus achieving rapid left and right positioning. The rear ends of the two wheels of the vehicle are limited by a crossbar. Through the cooperation of the hooks of the first and second hooks and the crossbar, the frame is fixed front and back. After the front, back, left, and right fixation is completed, the operator can press the push switch, which drives the telescopic component to extend forward. The operator does not need to manually fix the frame, thus avoiding personnel injury in the fire. Attached Figure Description

[0027] Figure 1 This is a perspective view of the fireproof canopy and the car in this application. The fireproof canopy is moved to the rear of the car and positioned and fixed using a quick positioning and fixing structure.

[0028] Figure 2 for Figure 1Enlarged view of section F in the middle;

[0029] Figure 3 A top-down view of the fireproof canopy and the car in this application. Figure 1 The fireproof canopy is in a retracted state and moved to the rear of the car;

[0030] Figure 4 A top-down view of the fireproof canopy and the car in this application. Figure 2 The fireproof canopy extends outwards to surround the car;

[0031] Figure 5 This is a right view of the fireproof canopy of this application, showing the fireproof canopy in a retracted state;

[0032] Figure 6 for Figure 5 Cross-sectional view of surface AA;

[0033] Figure 7 for Figure 6 Enlarged view of section B;

[0034] Figure 8 This is a right view of the fireproof canopy of this application, with the fireproof canopy in an extended position;

[0035] Figure 9 For the three-dimensional fireproof canopy of this application Figure 1 The fireproof canopy is in a retracted state;

[0036] Figure 10 for Figure 9 Enlarged view of section G in the middle;

[0037] Figure 11 For the three-dimensional fireproof canopy of this application Figure 2 The fireproof canopy is in a retracted state;

[0038] Figure 12 for Figure 11 Enlarged view of section C;

[0039] Figure 13 This is a perspective view of the driving component of this application.

[0040] The attached figures are labeled as follows: Frame 10, Crossbar 12, Mounting bracket 15, First hook 16, Second hook 17, First spring 18, Second spring 19, First inclined plane 161, Second inclined plane 171, Telescopic assembly 20, Drive assembly 30, Scissor arm 31, Slider 32, Tension spring 33, Reset mechanism 34, First fireproof plate 11, First caster 41, Fireproof inner frame 21, Second fireproof plate 22, Second caster 23, Slide rail assembly 24, Pulling structure 25, Baffle 26, Turntable 341, Pulley 342, Pull rope 343, Handle 344, Locking mechanism 35, Ratchet 351, Pad 352, Control box 353, Press switch 354, Transmission rod 345, Car 50, Fixed slide rail 241, Moving slide rail 242. Detailed Implementation

[0041] The embodiments of this utility model will be described below with reference to the accompanying drawings and related examples. The embodiments of this utility model are not limited to the following examples, and this utility model relates to relevant necessary components in this technical field, which should be regarded as well-known technology in this technical field and can be known and mastered by those skilled in this technical field.

[0042] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0043] Please refer to Figure 1-13 As shown, this embodiment discloses a rapid positioning and fixing structure and a fireproof canopy. The fireproof canopy includes a rapid positioning and fixing structure, a telescopic component 20, and a driving component 30, wherein...

[0044] The quick positioning and fixing structure includes:

[0045] Frame 10, with a first caster 41 at the bottom;

[0046] The positioning mechanism includes a crossbar 12 located at the bottom front end of the frame 10 and used to block the wheels of the car 50 in the front-rear direction. Mounting brackets 15 are provided at both ends of the crossbar 12.

[0047] The quick-fixing mechanism includes a first hook 16 and a second hook 17 rotatably mounted on two mounting brackets 15, a first spring 18 connected to the crossbar 12 and pulling the first hook 16 to the left, and a second spring 19 connected to the crossbar 12 and pulling the second hook 17 to the right. The first hook 16 and the second hook 17 can extend between the two wheels of the car 50 and respectively lock the inner sides of the two wheels of the car 50.

[0048] The telescopic component 20 is located inside the frame 10 and can extend forward outside the frame 10 to form a fireproof space surrounding the vehicle 50; the drive component 30 is used to drive the telescopic component 20 to extend forward or retract backward.

[0049] The fireproof canopy of this embodiment can be applied to situations where a car spontaneously combusts, such as... Figures 3 to 4 As shown, if a car 50 spontaneously combusts while charging, the fireproof canopy can be moved behind the burning car 50 manually or via a smart mobile device. This eliminates the need for guide rails or other structures at each parking space, reducing costs. The telescopic component 20 is driven by the drive component 30 to extend forward beyond the frame 10, forming a fireproof space surrounding the car 50. This blocks the flames from the burning car 50, preventing the fire from spreading to the cars 50 on either side and buying more than half an hour for fire rescue.

[0050] Please refer to the fireproof canopy in this embodiment. Figure 1 , Figure 2 , Figure 9 and Figure 10 A quick-positioning and fixing structure is set up, which can be moved behind the spontaneously combusting car 50 by manual or intelligent mobile devices. Then, the frame 10 of the fireproof canopy is aligned with the car 50, and the frame 10 is driven forward so that the first hook 16 and the second hook 17 extend between the two wheels of the car 50 and respectively lock the inner side of the two wheels. The tension of the first spring 18 and the second spring 19 makes the first hook 16 and the second hook 17 stably lock the inner side of the two wheels of the car 50, preventing the frame 10 from shaking in the left and right direction, thus achieving quick left and right positioning. The rear end of the two wheels of the car 50 is limited by the crossbar 12. Through the cooperation of the hooks of the first hook 16 and the second hook 17 with the crossbar 12, the frame 10 is fixed at the front and back. After the front, back, left and right fixation is completed, the operator can press the push switch 354, and the drive component 30 drives the telescopic component 20 to extend forward. The operator does not need to manually fix the frame 10, avoiding personnel injury from fire.

[0051] Due to the tension of the first spring 18 and the second spring 19, the first hook 16 and the second hook 17 have a tendency to swing in opposite directions. In order to make it easier for the first hook 16 and the second hook 17 to engage with the inside of the wheel of the car 50, the front end of the first hook 16 is provided with a first inclined surface 161 for guiding the first hook 16 to engage with the inside of the wheel of the car 50. When the first inclined surface 161 contacts the wheel of the car 50, the elasticity of the first spring 18 and the guiding effect of the first inclined surface 161 make the first hook 16 quickly engage with the inside of the wheel of the car 50. The front end of the second hook 17 is provided with a second inclined surface 171 for guiding the second hook 17 to engage with the inside of the wheel of the car 50. When the second inclined surface 171 contacts the wheel of the car 50, the elasticity of the second spring 19 and the guiding effect of the second inclined surface 171 make the second hook 17 quickly engage with the inside of the wheel of the car 50.

[0052] Furthermore, such as Figure 13 As shown, the drive assembly 30 of this embodiment is disposed within the frame 10. The drive assembly 30 includes a scissor arm 31, sliders 32 hinged to the upper and lower arms at the rear end of the scissor arm 31, a tension spring 33 connected between the two sliders 32, and a reset mechanism 34 for driving the two sliders 32 to move in opposite directions. The two sliders 32 slide in the vertical direction on the frame 10. The front end of the scissor arm 31 is hinged to the telescopic assembly 20 to drive the telescopic assembly 20 to extend and retract in the front-back direction. The drive assembly 30 of this embodiment adopts a mechanical structure. After the switch of the drive assembly 30 is turned on, the tension of the tension spring 33 causes the two sliders 32 to move relative to each other in the vertical direction. The two sliders 32 drive the scissor arm 31 to extend forward, thereby driving the telescopic assembly 20 to extend forward beyond the frame 10 to form a fireproof space surrounding the car 50. The mechanical drive structure allows the telescopic assembly 20 to extend smoothly without being affected by the high temperature of the fire, ensuring that the telescopic assembly 20 covers the spontaneously combusting car 50 and isolates the flames generated by the spontaneously combusting car 50.

[0053] Please refer to Figure 11 In this embodiment, the inner side of the frame 10 is provided with a plurality of first fireproof boards 11 that close the hollow positions of the frame 10. The first fireproof boards 11 can be fixed to the frame 10 with bolts. When the first fireproof board 11 is burned, it can be disassembled and replaced to extend the service life of the fireproof canopy.

[0054] As a preferred embodiment, the first fireproof board 11 in this embodiment can be made of fireproof materials such as mineral wool board, cement board, perlite board, fireproof gypsum board, calcium carbonate fiber board, and magnesium oxychloride fireproof board, which have good fireproof performance.

[0055] Furthermore, in order to quickly move the fire shelter to the rear of the spontaneously combusting car 50, this application provides a moving device at the bottom of the frame 10. This moving device can be an intelligent moving device, such as the chassis moving device of an automated guided vehicle. The intelligent moving device can automatically and accurately move the fire shelter to the spontaneously combusting car 50, which is fast and more efficient.

[0056] Please refer to Figure 8 The telescopic component 20 of this embodiment includes at least two layers of fireproof inner frame 21 that are sequentially nested from the inside out, a second fireproof plate 22 fixed on the fireproof inner frame 21, and a second caster 23 located at the bottom of the fireproof inner frame 21. The front end of the scissor arm 31 is hinged to the outermost fireproof inner frame 21 through a rotating shaft. By setting two or more layers of fireproof inner frame 21, the length of each fireproof inner frame 21 in the front-back direction can be shortened when the maximum extension distance is the same. Since all fireproof inner frames 21 can be retracted into the frame 10, the length of the frame 10 in the front-back direction can be shortened, resulting in a more compact structure and less space occupation.

[0057] Furthermore, by setting a second caster 23 at the bottom of the fireproof inner frame 21, the fireproof inner frame 21 can be moved in the front-back direction by the second caster 23, which reduces the movement resistance of the fireproof inner frame 21 and facilitates the drive assembly 30 to drive the fireproof inner frame 21 to move in the front-back direction.

[0058] Please refer to Figure 6 and Figure 7 In this embodiment, a slide rail assembly 24 that extends and retracts in the front-to-back direction is provided between the frame 10 and the innermost fireproof inner frame 21. A slide rail assembly 24 that extends and retracts in the front-to-back direction is provided between two adjacent fireproof inner frames 21. The slide rail assembly 24 includes a fixed slide rail 241 and a movable slide rail 242. Since both the fixed slide rail 241 and the movable slide rail 242 are heavy-duty slide rails, they can withstand greater gravity without deformation, thereby improving the stability of the fireproof inner frame 21 in the front-to-back direction.

[0059] Please refer to Figure 8 Each fireproof inner frame 21 has a pulling structure 25 at its rear end. The pulling structure 25 can be a baffle. When the rear end of the outermost fireproof inner frame 21 moves to the front end of the inner fireproof inner frame 21, the baffle blocks the front end of the inner fireproof inner frame 21, causing the inner fireproof inner frame 21 to move forward. In this way, the pulling structure 25 can pull the multi-layered fireproof inner frames 21 forward in sequence.

[0060] For further details, please refer to... Figure 9The outermost fireproof inner frame 21 is provided with a baffle 26 at its front end. When the scissor arm 31 retracts and moves the outermost fireproof inner frame 21 backward, the baffle 26 blocks the other fireproof inner frames 21, and the baffle 26 drives the remaining fireproof inner frames 21 to retract and return to their original position within the frame 10.

[0061] Please refer to Figure 12 The reset mechanism 34 includes a turntable 341 rotatably located at the center of the front end of the frame 10 and pulleys 342 rotatably located on the upper and lower sides of the front end of the frame 10. Both sliders 32 are connected to pull ropes 343. The upper pull rope 343 passes over the upper pulley 342 and is connected to the turntable 341. The lower pull rope 343 passes over the lower pulley 342 and is connected to the turntable 341. The turntable 341 is connected to a handle 344. When the telescopic component 20 needs to be retracted and reset, the user can shake the handle 344 to rotate the turntable 341, thereby causing the upper and lower pull ropes 343 to pull the upper and lower sliders 32 to move in opposite directions in the vertical direction, so as to drive the scissor arm 31 to retract. The operation is simple.

[0062] For further details, please refer to... Figure 11 and Figure 12 The drive assembly 30 in this embodiment also includes a locking mechanism 35. The locking mechanism 35 includes a ratchet 351 fixed to the turntable 341, a pawl 352 fixed to the frame 10 and capable of locking the ratchet 351, and a control box 353 for driving the pawl 352. The control box 353 is fixed to the frame 10 and has a push switch 354 on its outside. When the telescopic assembly 20 is in the retracted state, the ratchet 351 is locked by the pawl 352, thereby preventing the turntable 341 from deflecting, which has good structural stability. When the user needs to extend the telescopic assembly 20, the push switch 354 can be pressed, and the control box 353 controls the pawl 352 to swing. The pawl 352 no longer locks the ratchet 351. Under the tension of the tension spring 33, the two sliders 32 move relative to each other, thereby the scissor arm 31 extends and deforms forward, driving the outermost fireproof inner frame 21 to move forward. The structure is ingenious.

[0063] For further details, please refer to... Figure 13 In this embodiment, the drive assembly 30 has two sets, which are respectively located on the left and right sides of the frame 10. Two adjacent turntables 341 are connected by a transmission rod 345, and the two sets of drive assemblies 30 are linked by the transmission rod 345, which is ingenious.

[0064] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A rapid positioning and fixing structure, characterized in that, The rapid positioning and fixing structure includes: A frame (10) is provided with a first caster (41) at the bottom of the frame (10); The positioning mechanism includes a crossbar (12) located at the bottom front end of the frame (10) and used to block the wheels of the car (50) in the front-rear direction. The crossbar (12) is provided with mounting brackets (15) at both the left and right ends. The quick-fixing mechanism includes a first hook (16) and a second hook (17) rotatably mounted on the two mounting brackets (15), a first spring (18) connected to the crossbar (12) and pulling the first hook (16) to the left, and a second spring (19) connected to the crossbar (12) and pulling the second hook (17) to the right. The first hook (16) and the second hook (17) can extend between the two wheels of the car (50) and respectively lock the inner sides of the two wheels of the car (50).

2. The rapid positioning and fixing structure according to claim 1, characterized in that, The front end of the first hook (16) is provided with a first inclined surface (161) for guiding the first hook (16) to engage with the inner side of the wheel of the car (50); the front end of the second hook (17) is provided with a second inclined surface (171) for guiding the second hook (17) to engage with the inner side of the wheel of the car (50).

3. A fireproof canopy, comprising the quick-positioning and fixing structure as described in any one of claims 1 to 2, characterized in that, Also includes: Telescopic component (20) is provided inside the frame (10). The telescopic component (20) can extend forward outside the frame (10) to form a fireproof space surrounding the vehicle (50). A drive component (30) is used to drive the telescopic component (20) to extend forward or retract backward.

4. The fireproof shed according to claim 3, characterized in that, The drive assembly (30) is located inside the frame (10). The drive assembly (30) includes a scissor arm (31), a slider (32) hinged to the upper and lower arms at the rear end of the scissor arm (31), a tension spring (33) connected between the two sliders (32), and a reset mechanism (34) for driving the two sliders (32) to move in opposite directions. The two sliders (32) slide vertically along the frame (10); The front end of the scissor arm (31) is hinged to the telescopic assembly (20) to drive the telescopic assembly (20) to extend and retract in the front-back direction.

5. The fireproof shed according to claim 4, characterized in that, The telescopic assembly (20) includes at least two fireproof inner frames (21) that are sequentially nested from the inside out, a second fireproof plate (22) fixed on the fireproof inner frame (21), and a second caster (23) located at the bottom of the fireproof inner frame (21). The front end of the scissor arm (31) is hinged to the outermost fireproof inner frame (21).

6. The fireproof shed according to claim 5, characterized in that, A sliding rail assembly (24) that extends and retracts in the front-to-back direction is provided between the frame (10) and the innermost fireproof inner frame (21), and the sliding rail assembly (24) that extends and retracts in the front-to-back direction is provided between two adjacent fireproof inner frames (21).

7. The fireproof shed according to claim 5, characterized in that, Each layer of the fireproof inner frame (21) is provided with a pulling structure (25) at the rear end, through which the multi-layered fireproof inner frame (21) is pulled forward and unfolded in sequence; The outermost fireproof inner frame (21) has a baffle (26) at its front end. The baffle (26) drives the remaining fireproof inner frames (21) to retract into the frame (10) to the rear.

8. The fireproof shed according to claim 4, characterized in that, The reset mechanism (34) includes a turntable (341) rotatably disposed at the middle of the front end of the frame (10) and pulleys (342) rotatably disposed on the upper and lower sides of the front end of the frame (10). Both sliders (32) are connected to pull ropes (343). The pull rope (343) located above passes over the pulley (342) above and is connected to the turntable (341). The pull rope (343) located below passes over the pulley (342) below and is connected to the turntable (341). The turntable (341) is connected to a handle (344).

9. The fireproof shed according to claim 8, characterized in that, The drive assembly (30) further includes a locking mechanism (35), which includes a ratchet (351) fixed to the turntable (341), a pawl (352) fixed to the frame (10) and capable of locking the ratchet (351), and a control box (353) for driving the pawl (352). The control box (353) is fixed to the frame (10) and has a push switch (354) on its outside.

10. The fireproof shed according to claim 8, characterized in that, The drive assembly (30) has two sets, and the two sets of drive assemblies (30) are respectively located on the left and right sides of the frame (10). The two adjacent turntables (341) are connected by transmission rods (345).

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