A fire protection system for car showrooms

Abstract

This application relates to the technical field of fire protection systems, and more particularly to a fire protection system for an automobile showroom. The system includes a receiving tank located on the ground, within which a lifting device and a fireproof barrier are installed. The receiving tank is circumferentially arranged around the vehicles, and the fireproof barrier is connected to the lifting device. The lifting device is used to raise the fireproof barrier from the receiving tank to the area around the vehicles. A top sealing plate is provided on the top of the fireproof barrier to seal its upper opening. This application has the effect of protecting vehicles that have not yet caught fire in the event of a fire within the showroom.

Description

Technical Field

[0001] This application relates to the technical field of fire protection systems, and more particularly to a fire protection system for automobile showrooms. Background Technology

[0002] Fire protection systems are designed to protect materials and personnel in a protected area during a fire, thereby reducing loss of life and property. For car showrooms, fire prevention is crucial because cars are valuable items that are easily and rapidly combustible, and the large number of cars in a showroom means that a fire could easily cause significant property damage.

[0003] The fire protection system installed in the car showroom in the relevant technology includes fire sprinklers located on the ceiling of the showroom. The fire sprinklers are connected to fire water pipes. When a fire occurs, the fire sprinklers are heated by the fire and open, so that the fire sprinklers can spray water to cool the interior of the car showroom, thereby achieving the effect of extinguishing the fire.

[0004] However, the aforementioned structure makes it easy for vehicles that have not yet caught fire to catch fire if the fire is not controlled in time. Summary of the Invention

[0005] In order to protect vehicles that have not caught fire in the event of a fire in the showroom, this application provides a fire protection system for automobile showrooms.

[0006] This application provides a fire protection system for automobile showrooms, which adopts the following technical solution:

[0007] A fire prevention system for an automobile showroom includes a receiving tank set in the ground, a lifting device and a fireproof barrier installed in the receiving tank, the receiving tank being arranged circumferentially around the vehicle and the fireproof barrier being connected to the lifting device, the lifting device being used to raise the fireproof barrier from the receiving tank to the area around the vehicle, and a top sealing plate being provided on the top of the fireproof barrier to seal the upper opening of the fireproof barrier.

[0008] By adopting the above technical solution, the receiving groove on the ground can be used as a reference for the position of parked vehicles, so that the vehicles are located inside the ring formed by the receiving groove. The fireproof barrier is arranged inside the receiving groove and connected to the lifting device. When a fire occurs inside the exhibition hall, the fireproof barrier extends upward from the receiving groove under the action of the lifting device and blocks the vehicles. Then, the top sealing plate installed at the top of the fireproof barrier seals the opening at the top of the fireproof barrier, thereby protecting the vehicles inside the fireproof barrier and the top sealing plate. After a fire occurs in the exhibition hall, it can protect vehicles that have not caught fire; at the same time, vehicles that have caught fire can also reduce the spread of fire through the fireproof barrier and the top sealing plate.

[0009] Preferably, the top of the fireproof enclosure is fixedly provided with an annular frame, which matches the opening of the receiving groove. When the fireproof enclosure is located in the receiving groove, the upper surface of the annular frame is flush with the opening of the receiving groove. The top sealing plate is vertically rotatably installed on the lower surface of the annular frame, and when the top sealing plate is in a vertical state, the top sealing plate is located below the annular frame.

[0010] By adopting the above technical solution, the ring frame matches the opening of the receiving groove. When the fireproof enclosure is located in the receiving groove, the ring frame seals the receiving groove, which facilitates the normal use of the exhibition hall. At the same time, the top sealing plate can also be stored in the receiving groove along with the fireproof enclosure, making it convenient to take out the top sealing plate along with the fireproof enclosure when needed.

[0011] Preferably, a driving device is installed on the annular frame. The driving device includes a motor, a first worm, and a first worm wheel. The motor is fixed on the annular frame, the first worm wheel is fixed on the top sealing plate, the first worm meshes with the first worm wheel, and the motor drives the first worm to rotate.

[0012] By adopting the above technical solution, when the annular frame reaches the preset height, the motor drives the first worm to rotate, which in turn drives the first worm wheel. As a result, the first worm wheel and the top sealing plate rotate to a horizontal position at the same time, which facilitates the automatic opening of the top sealing plate. Furthermore, the self-locking of the first worm and the first worm wheel can prevent the top sealing plate from opening under gravity.

[0013] Preferably, the top sealing plate includes a plate body and a movable body, the movable body being slidably connected to the plate body, and the sliding direction of the movable body relative to the plate body being perpendicular to the rotation axis of the top sealing plate relative to the annular frame; the plate body is vertically rotatably connected to the annular frame and the sliding direction of the movable body is away from the edge of the annular frame.

[0014] By adopting the above technical solution, the movable body is slidably connected to the plate. When the plate rotates vertically, the movable body is located on the side of the plate closer to the annular frame, reducing the maximum radius when the top sealing plate rotates and opens, thereby protecting vehicles inside the fireproof enclosure and reducing the height required for the fireproof enclosure.

[0015] Preferably, a second worm gear is rotatably mounted on the plate, and a second worm is coaxially fixed on the output shaft of the motor. The second worm is horizontally positioned and is connected to the first worm via a connecting rod. When the plate rotates to a horizontal position, the second worm meshes with the second worm gear, and the connecting rod disengages from the transmission of the first worm. The second worm gear is used to drive the moving body to slide.

[0016] By adopting the above technical solution, the second worm is coaxially fixed on the motor, and the second worm and the first worm are connected by a connecting rod for transmission. Thus, under the action of the motor, the first worm and the second worm can be driven simultaneously. When the second worm wheel meshes with the second worm, the connecting rod disengages from the transmission of the first worm, so that the movement of the moving body is after the rotation of the plate, avoiding collision with the vehicle caused by the downward movement of the moving body.

[0017] Preferably, both the first worm and the second worm have connecting holes, the connecting holes being parallel to the center line of the first worm. The first worm is sleeved on the second worm, and a spring is provided between the first worm and the second worm. The connecting rod is inserted into the connecting hole to drive and connect the first worm and the second worm, and the connecting rod is rotatably mounted on the movable body.

[0018] By adopting the above technical solution, a connecting hole is opened on the first worm and the second worm, and the connecting rod is inserted into the connecting hole to drive the first worm and the second worm. When the moving body is driven by the second worm wheel, the first worm first compresses the spring, and at the same time the moving body drives the connecting rod to move in the direction of disengaging from the first worm, thereby facilitating the motor to drive the first worm and the second worm.

[0019] Preferably, the plate is provided with a transmission device, which includes two transmission wheels. One transmission wheel is coaxially fixed with the second worm gear, and the other transmission wheel is installed on the side of the plate away from the annular frame. The two transmission wheels are connected by a transmission belt, and the movable body is connected to the transmission belt.

[0020] By adopting the above technical solution, a transmission wheel is fixed coaxially with the second worm wheel, so that the second worm wheel can drive the transmission wheel to rotate, and then the transmission belt installed between the two transmission wheels rotates, causing the moving body to slide under the action of the transmission belt.

[0021] Preferably, it also includes a gas cylinder for containing fire extinguishing gas, a gas pipe connected to the gas cylinder, the gas pipe extending from the ground in the middle of the fireproof enclosure, and a solenoid valve connected to the gas pipe.

[0022] By adopting the above technical solution, the gas cylinder is filled with fire extinguishing gas. When the fireproof barrier is raised, the fire extinguishing gas released by the gas cylinder can temporarily reduce the spread of the fire. At the same time, under the action of the fireproof barrier, the fire extinguishing gas produced by the gas cylinder can be more concentrated, reducing the possibility of vehicle fires.

[0023] Preferably, the lifting device includes multiple screws, a drive gear, a driven gear, and a drive motor. The drive motor is fixed in the receiving groove, the drive gear is coaxially fixed on the output shaft of the drive motor, the screws are vertically arranged and rotatably installed in the receiving groove, a base is threaded onto the screw, the fireproof enclosure is fixed on the base, and the driven gear is coaxially fixed to the lower end of the screw; the drive gear meshes with the driven gear.

[0024] By adopting the above technical solution, multiple screws are rotatably installed in the receiving groove, and the base is threadedly connected to the screws. When the screws are driven by the drive motor and the drive gear, the base moves along the length of the screws, thereby enabling the fireproof enclosure installed on the base to be raised and lowered.

[0025] Preferably, the receiving groove is arranged in a rectangular ring, and a plurality of screws are distributed at the four corners of the receiving groove. A synchronous belt is connected to the driven gears on the plurality of screws, and the driving gear meshes with a driven gear.

[0026] By adopting the above technical solution, the receiving groove is arranged in a rectangle, and multiple screws are located at the four corners of the receiving groove. Thus, the driven gears on the multiple screws can be synchronously connected by a timing belt, so that the base on the screw can be kept in a horizontal state and the stability can be improved.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. In the event of a fire inside the showroom, the fireproof barrier extends upward from the receiving groove and surrounds the vehicles. The top sealing plate installed at the top of the fireproof barrier then seals the opening at the top of the fireproof barrier, thus protecting vehicles that have not yet caught fire in the event of a fire inside the showroom.

[0029] 2. The movable body is slidably connected to the panel. When the panel rotates vertically, the movable body is located on the side of the panel closer to the annular frame, which reduces the maximum radius when the top sealing panel rotates and opens, and reduces the height required for the fireproof enclosure.

[0030] 3. When the second worm gear meshes with the second worm, the engaging rod disengages from the transmission of the first worm, so that the movement of the moving body occurs after the plate rotates, thus avoiding a collision with the vehicle caused by the downward movement of the moving body. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0032] Figure 2 This is a schematic diagram showing the arrangement of the screw in an embodiment of this application;

[0033] Figure 3 This is a schematic diagram of the top sealing plate in an embodiment of this application;

[0034] Figure 4 This is a schematic diagram of the installation structure of the drive device in an embodiment of this application;

[0035] Figure 5 This is a schematic diagram of the installation structure of the transmission wheel in an embodiment of this application;

[0036] Figure 6 This is a schematic diagram of the structure of the connecting rod drive connecting the first worm and the second worm in the embodiment of this application.

[0037] Explanation of reference numerals in the attached drawings: 1. Lifting device; 11. Screw; 12. Driving gear; 13. Driven gear; 14. Drive motor; 15. Synchronous belt; 2. Fireproof enclosure; 21. Base; 22. Annular frame; 221. Positioning surface; 3. Top sealing plate; 31. Plate; 32. Movable body; 33. Guide rod; 4. Receiving groove; 51. Gas tank; 52. Gas pipe; 53. Solenoid valve; 6. Drive device; 61. Electric motor; 62. First worm; 63. First worm wheel; 71. Second worm; 72. Connecting rod; 73. Rotating block; 74. Second worm wheel; 75. Support seat; 76. Spring; 77. Connecting hole; 8. Transmission device; 81. Transmission wheel; 82. Transmission belt. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0039] This application discloses a fire protection system for automobile showrooms, as shown in the following embodiments. Figure 1 The system includes a lifting device 1, a fireproof barrier 2, and a top sealing plate 3. A receiving groove 4, which is annular, is provided on the ground. The lifting device 1 is located inside the receiving groove 4, and the fireproof barrier 2 is arranged within the receiving groove 4, mounted on the lifting device 1. The lifting device 1 is used to move the fireproof barrier 2 upwards. The top sealing plate 3 is located on the upper part of the fireproof barrier 2 and is used to seal the upper opening of the fireproof barrier 2. The fireproof barrier 2 is arranged in a ring along the annular shape of the receiving groove 4. The receiving groove 4 can be used as the boundary line of a vehicle parking space, ensuring that the vehicle is parked within the area enclosed by the receiving groove 4. In the event of a fire, each vehicle is separated by a corresponding fireproof barrier 2, while the top sealing plate 3 seals the top of the fireproof barrier 2. The fireproof barrier 2 is made of fire-resistant material, such as concrete, thus separating each vehicle individually. Even if a single vehicle catches fire, the fire in other vehicles that are not on fire can be contained by the fireproof barrier 2 and the top sealing plate 3. At the same time, the fire in vehicles that have already caught fire can be reduced from spreading further, thus minimizing losses, thanks to the fireproof barrier 2 and the top sealing plate 3.

[0040] refer to Figure 1 and Figure 2 The lifting device 1 includes multiple screws 11, a driving gear 12, a driven gear 13, and a drive motor 14. The screws 11 are vertically arranged within the receiving groove 4, with their lower ends rotatably positioned. The screws 11 are distributed along the annular receiving groove 4, connecting to the fireproof enclosure 2. A base 21 is fixedly mounted on the lower part of the fireproof enclosure 2, slidingly engaging with the receiving groove 4. The screws 11 are threadedly connected to the base 21, and the fireproof enclosure 2 is located on the upper surface of the base 21. When the screws 11 rotate simultaneously, the base 21 can maintain a horizontal and vertical movement under the action of the screws 11, allowing the fireproof enclosure 2 to rise and fall. An annular frame 22 is fixedly mounted on the upper part of the fireproof enclosure 2. The shape of the annular frame 22 matches the shape of the receiving groove 4, and the annular frame 22 is used to seal the opening of the receiving groove 4. When no fire occurs, the fireproof enclosure 2 is located in the receiving groove 4, and the annular frame 22 enters the receiving groove 4. The upper surface of the annular frame 22 is flush with the ground to facilitate the use of the exhibition hall. The upper surface of the annular frame 22 can serve as the frame line for vehicle parking positions. When a fire occurs, the fireproof enclosure 2 can be raised by multiple screws 11 to isolate the area around the vehicle, reduce the area affected by the fire, and thus reduce losses. One driven gear 13 is provided at the lower end of each screw 11, and the driven gear 13 is coaxially fixedly connected to the corresponding screw 11. The drive motor 14 is fixed at the bottom of the receiving groove 4, and the output shaft of the drive motor 14 is coaxially fixedly connected to the driving gear 12. The driving gear 12 meshes with the driven gear 13 on one of the screws 11. The receiving groove 4 can be arranged in a rectangular ring shape, and multiple driven gears 13 can be arranged at the four corners of the rectangle. A synchronous belt 15 is connected to multiple driven gears 13. The synchronous belt 15 is used to drive multiple driven gears 13 simultaneously, and thus, under the action of the drive motor 14, multiple screws 11 can be driven simultaneously. The base 21 mounted on the screw 11 can move upward stably.

[0041] refer to Figure 1A gas cylinder 51 can be installed in the middle of the fireproof enclosure 2. The gas cylinder 51 can be filled with compressed fire extinguishing gas, which can be carbon dioxide or nitrogen. The gas cylinder 51 is located below ground level. A gas pipe 52 is connected to the gas cylinder 51. One end of the gas pipe 52 is connected to the gas cylinder 51, and the other end extends vertically from the ground. A solenoid valve 53 is installed on the gas pipe 52. When the top sealing plate 3 closes the top of the fireproof enclosure 2, or when the fireproof enclosure 2 is raised, the solenoid valve 53 can open the gas pipe 52, allowing the fire extinguishing gas in the gas cylinder 51 to be discharged outward, thereby reducing the oxygen content inside the fireproof enclosure 2 and thus reducing the possibility of vehicle combustion. One side of the top sealing plate 3 is rotatably connected to the annular frame 22, and the rotation axis of the top sealing plate 3 is set horizontally. The rotation axis of the top sealing plate 3 and the annular frame 22 is located at the middle of the lower surface of the top sealing plate 3. When the top sealing plate 3 rotates downward around the rotation axis of the annular frame 22 to a vertical state, the top sealing plate 3 is below the annular frame 22, so that when the fireproof enclosure 2 enters the receiving groove 4, the top sealing plate 3 can enter the receiving groove 4 at the same time as the fireproof enclosure 2.

[0042] refer to Figure 3A positioning surface 221 is provided on the lower surface of the annular frame 22 at the position where the top sealing plate 3 is installed. When the top sealing plate 3 is rotated to a horizontal position, the positioning surface 221 abuts against the upper surface of the top sealing plate 3, so that the top sealing plate 3 is just in a horizontal state. A driving device 6 is installed on the annular frame 22, and the driving device 6 is used to drive the top sealing plate 3 to rotate upward to the position abutting against the positioning surface 221. One top sealing plate 3 is provided on each of the two opposite inner sides of the annular frame 22, so that when the two top sealing plates 3 are in a horizontal state, the top of the fireproof enclosure 2 can be sealed. The top sealing plate 3 includes a plate body 31 and a movable body 32. One side of the plate body 31 is rotatably connected to the annular frame 22. One side of the movable body 32 is in contact with one side of the plate body 31. A guide rod 33 is fixedly installed on the side of the movable body 32 facing the plate body 31. The cross-section of the guide rod 33 is T-shaped. A guide groove is opened on the plate body 31 relative to the guide rod 33. The guide rod 33 slides in the guide groove. The length direction of the guide rod 33 is perpendicular to the rotation axis of the plate body 31 and the annular frame 22, so that the movable body 32 is an extension of the plate body 31. When the plate body 31 rotates to a horizontal position, the movable body 32 moves relative to the plate body 31 to seal the upper part of the fireproof enclosure 2. When the top sealing plate 3 is in the receiving groove 4, the movable body 32 is located near the annular frame 22, so that the vertical length of the top sealing plate 3 formed by the plate body 31 and the movable body 32 is smaller, thereby reducing the maximum radius when the top sealing plate 3 rotates upward. Because a vehicle is positioned in the middle of the fireproof enclosure 2, the maximum radius of rotation of the top sealing plate 3 is reduced, which lowers the required height of the fireproof enclosure 2. This allows the fireproof enclosure 2 to reach the fireproof location more quickly, while also reducing the required height of the receiving trough 4. Furthermore, the height of the fireproof enclosure 2 is reduced to accommodate the height of the exhibition hall, preventing the situation where the top sealing plate 3 cannot be safely rotated even after the fireproof enclosure 2 reaches the top of the exhibition hall. This also reduces the manufacturing cost and weight of the fireproof enclosure 2.

[0043] refer to Figure 4 The driving device 6 includes a motor 61, a first worm 62, and a first worm wheel 63. The axis of the first worm 62 is horizontally arranged. The motor 61 is fixed inside the annular frame 22, and its output shaft drives the first worm 62 to rotate. The first worm wheel 63 is fixed on the plate 31, and its centerline coincides with the rotation axis of the plate 31 relative to the annular frame 22. The first worm wheel 63 meshes with the first worm 62. When the first worm 62 rotates, it drives the first worm wheel 63 to rotate, which in turn causes the first worm wheel 63 to drive the plate 31 to rotate vertically around the horizontal axis, changing the plate 31 from a vertical to a horizontal state. Furthermore, the self-locking property between the first worm wheel 63 and the first worm 62 prevents the plate 31 from rotating downwards under the influence of gravity.

[0044] refer to Figure 4 and Figure 5 A second worm 71 is coaxially mounted with the first worm 62. The second worm 71 is fixed coaxially with the output axis of the motor 61. The first worm 62 and the second worm 71 are connected by a connecting rod 72. The first worm 62 is sleeved on the second worm 71. When the connecting rod 72 connects the first worm 62 and the second worm 71, the motor 61 drives the first worm 62 and the second worm 71 to rotate simultaneously. When the connecting rod 72 separates the first worm 62 and the second worm 71, the motor 61 only drives the second worm 71 to rotate. A rotating block 73 is provided at one end of the connecting rod 72. The rotating block 73 is rotatably mounted inside the movable body 32. The length direction of the connecting rod 72 is parallel to the sliding direction of the movable body 32 relative to the plate 31. When the movable body 32 moves, the rotating block 73 drives the connecting rod 72 to move away from the first worm 62.

[0045] refer to Figure 4 and Figure 5 A second worm gear 74 is provided inside the plate 31. The second worm gear 74 is rotatably connected to the plate 31 and is used to mesh with the second worm 71. When the plate 31 is rotated to a horizontal position by the first worm gear 63, the second worm gear 74 meshes with the second worm 71; when the plate 31 rotates downward, the second worm gear 74 disengages from the second worm 71. A transmission device 8 is connected to the second worm gear 74. The transmission device 8 includes two transmission wheels 81 and a transmission belt 82. One transmission wheel 81 is coaxially and fixedly connected to the second worm gear 74, and the other transmission wheel 81 is located on the side of the plate 31 away from the side connected to the annular frame 22. The transmission belt 82 is drivenly connected to the two transmission wheels 81. The transmission direction of the transmission belt 82 is parallel to the sliding direction of the movable body 32 relative to the plate 31. The movable body 32 is fixed at one point with the transmission belt 82, so that the transmission belt 82 can drive the movable body 32 to slide relative to the plate 31 during transmission.

[0046] refer to Figure 5 and Figure 6A support seat 75 is provided on the second worm 71, and the support seat 75 is fixed on the annular frame 22. The support seat 75 and the motor 61 horizontally position the second worm 71, and the second worm 71 is rotatably connected to the support seat 75. A spring 76 is provided between the first worm 62 and the second worm 71. The spring 76 is in a compressed state, and the minimum elastic force of the spring 76 is sufficient to keep the first worm 62 driving the plate 31 to rotate. That is, when the plate 31 rotates, the distance between the first worm 62 and the second worm 71 remains constant. One end of the spring 76 can be welded to the first worm 62, and the other end abuts against the second worm 71. When the plate 31 rotates to a horizontal position and abuts against the positioning surface 221, both the plate 31 and the first worm wheel 63 stop rotating. When the first worm 62 continues to rotate, it will move closer to the second worm 71 and compress the spring 76, causing the elastic force of the spring 76 to continue to increase. At the same time, since the plate 31 is in a horizontal state, the plate 31, along with the second worm wheel 74, meshes with the second worm 71. Thus, the second worm 71 will drive the second worm wheel 74 to rotate, thereby moving the movable body 32 away from the second worm 71. The movable body 32 drives the connecting rod 72 to disengage from the first worm 62, stopping the motor 61 from driving the first worm 62. Both the first worm 62 and the second worm 71 have connecting holes 77. The connecting holes 77 are parallel to and offset from the axes of the first worm 62 and the second worm 71. The connecting rod 72 is used to insert into the connecting hole 77, and the connecting hole 77 on the second worm 71 passes through the second worm 71. When the connecting rod 72 is located in the connecting hole 77 within the first worm 62 and the second worm 71, the second worm 71 can simultaneously drive the first worm 62 to rotate. When the connecting rod 72 disengages from the connecting hole 77 within the first worm 62, the motor 61 only drives the second worm 71 to rotate. Since the first worm 62 and the second worm 71 are driven by a single motor 61, and when the second worm 71 drives the second worm wheel 74 to rotate, the plate 31 is already in a horizontal state. This ensures that the movable body 32 moves while in a horizontal state, reducing the risk of damage to vehicles inside the fireproof enclosure 2 caused by premature movement of the movable body 32.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fire protection system for automobile showrooms, characterized in that: The system includes a receiving trough (4) on the ground, a lifting device (1) and a fireproof enclosure (2) are provided in the receiving trough (4), the receiving trough (4) is arranged circumferentially around the vehicle and the fireproof enclosure (2) is connected to the lifting device (1), the lifting device (1) is used to raise the fireproof enclosure (2) from inside the receiving trough (4) to around the vehicle, and a top sealing plate (3) is provided on the top of the fireproof enclosure (2) to seal the upper opening of the fireproof enclosure (2); The top of the fireproof enclosure (2) is fixedly provided with an annular frame (22), which matches the groove of the receiving groove (4). When the fireproof enclosure (2) is located in the receiving groove (4), the upper surface of the annular frame (22) is flush with the groove of the receiving groove (4). The top sealing plate (3) is vertically rotated and installed on the lower surface of the annular frame (22). When the top sealing plate (3) is in a vertical state, the top sealing plate (3) is located below the annular frame (22). A drive device (6) is installed on the annular frame (22). The drive device (6) includes a motor (61), a first worm (62) and a first worm wheel (63). The motor (61) is fixed on the annular frame (22), and the first worm wheel (63) is fixed on the top sealing plate (3). The first worm (62) meshes with the first worm wheel (63) and is driven to rotate by the motor (61). The top sealing plate (3) includes a plate body (31) and a movable body (32). The movable body (32) is slidably connected to the plate body (31). The sliding direction of the movable body (32) and the plate body (31) is perpendicular to the rotation axis of the top sealing plate (3) relative to the annular frame (22). The plate body (31) is vertically rotatably connected to the annular frame (22), and the sliding direction of the movable body (32) is away from the edge of the annular frame (22).

2. The fire protection system for an automobile showroom according to claim 1, characterized in that: A second worm gear (74) is rotatably mounted on the plate (31), and a second worm (71) is coaxially fixed on the output shaft of the motor (61). The second worm (71) is horizontally arranged, and the second worm (71) and the first worm (62) are connected by a connecting rod (72). When the plate (31) rotates to the horizontal position, the second worm (71) meshes with the second worm gear (74), and the connecting rod (72) disengages from the transmission of the first worm (62). The second worm gear (74) is used to drive the moving body (32) to slide.

3. The fire protection system for an automobile showroom according to claim 2, characterized in that: Both the first worm (62) and the second worm (71) are provided with connecting holes (77), the connecting holes (77) are parallel to the center line of the first worm (62), the first worm (62) is sleeved on the second worm (71), and a spring (76) is provided between the first worm (62) and the second worm (71). The connecting rod (72) is used to insert into the connecting hole (77) to drive and connect the first worm (62) and the second worm (71). The connecting rod (72) is rotatably mounted on the movable body (32).

4. A fire protection system for an automobile showroom according to claim 2 or 3, characterized in that: The plate (31) is provided with a transmission device (8), which includes two transmission wheels (81). One transmission wheel (81) is coaxially fixed with the second worm gear (74), and the other transmission wheel (81) is installed on the side of the plate (31) away from the annular frame (22). The two transmission wheels (81) are connected by a transmission belt (82), and the movable body (32) is connected to the transmission belt (82).

5. A fire protection system for an automobile showroom according to claim 1, characterized in that: It also includes a gas cylinder (51) for filling with fire extinguishing gas, and a gas pipe (52) connected to the gas cylinder (51). The gas pipe (52) extends from the ground in the middle of the fireproof enclosure (2) and a solenoid valve (53) is connected to the gas pipe (52).

6. The fire protection system for an automobile showroom according to claim 1, characterized in that: The lifting device (1) includes multiple screws (11), a drive gear (12), a driven gear (13), and a drive motor (14). The drive motor (14) is fixed in the receiving groove (4). The drive gear (12) is coaxially fixed on the output shaft of the drive motor (14). The screws (11) are vertically arranged and rotatably installed in the receiving groove (4). A base (21) is threaded onto the screws (11). The fireproof enclosure (2) is fixed on the base (21). The driven gear (13) is coaxially fixed at the lower end of the screws (11). The drive gear (12) meshes with the driven gear (13).

7. A fire protection system for an automobile showroom according to claim 6, characterized in that: The receiving groove (4) is arranged in a rectangular ring, and multiple screws (11) are distributed at the four corners of the receiving groove (4). The driven gears (13) on the multiple screws (11) are connected to a synchronous belt (15), and the driving gear (12) meshes with a driven gear (13).

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