Novel environment-friendly gas fire extinguishing device for protecting automobile engine

Abstract

The novel environment-friendly gas fire extinguishing device for protecting the automobile engine comprises an engine cover, a fire extinguishing assembly is mounted on the lower surface of the engine cover, and the fire extinguishing assembly comprises a mounting plate, a fire extinguishing agent storage tank, a fire extinguishing pipe, a pipe clamp, a spray head, a smoke alarm, a connector and a conveying pipe; one end of the conveying pipe is communicated with the fire extinguishing agent storage tank, and the other end of the conveying pipe is communicated with the fire extinguishing pipe through a connector. By arranging the protection damping assembly, damping protection of the fire extinguishing agent storage tank can be achieved in the running process of a vehicle, the fire extinguishing agent storage tank can be prevented from being directly collided by arranging the protection cover outside the fire extinguishing agent storage tank, then the protection effect is achieved, and when the vehicle runs on a complex road surface and bumps, the fire extinguishing agent storage tank can be prevented from being collided. And the damping rod is matched with the supporting spring, the buffering and damping effects can be achieved, shaking generated by the fire extinguishing agent storage tank is reduced, and safety is improved.

Description

Technical Field

[0001] The invention relates to a fire extinguishing device, in particular to a novel environmentally friendly gas fire extinguishing device for protecting automobile engines, belonging to the technical field of fire extinguishing devices. Background Art

[0002] The internal structure of a car engine is complex, with a large number of wires and cables and flammable materials. Once a fire occurs, it can easily spread rapidly. Since the engine compartment is relatively closed and the internal space is small, traditional manual fire extinguishing methods often fail to quickly and effectively extinguish the fire. Car engine fires may not only cause damage to the vehicle, but also cause serious injuries to the driver and passengers and surrounding personnel, and even endanger their lives. Especially in the hot summer, excessive temperatures in the engine compartment or short circuits in the wiring can cause the engine compartment to catch fire. When a fire occurs in the engine compartment, many drivers will open the cover and put out the fire, resulting in a large amount of oxygen being added instantly, causing the fire to become uncontrollable.

[0003] A known Chinese authorized patent (Announcement No.: CN207041767U) discloses an automatic fire extinguishing device for a car hood, which lays a fire extinguishing agent delivery pipeline in the engine box, collects the fire signal in the engine box by using a fire detection tube, and transmits the fire signal to a controller, which turns on an electronic switch valve, and the fire extinguishing agent in the fire extinguishing agent storage tank is sprayed into the engine box through the delivery pipeline and the nozzle; It accurately delivers the fire extinguishing agent to the engine box through the fire extinguishing agent delivery pipeline, thereby achieving rapid and effective fire extinguishing of the engine box. However, the following problems still exist in actual use: The intricate wiring and limited space inside the engine box make it very inconvenient to install the fire extinguisher tank. In addition, the fire extinguisher tank may be bumped to varying degrees due to the complex and changing road conditions during driving. This physical impact may not only damage the tank, but also cause the fire extinguisher to leak and even cause the risk of explosion. Therefore, a novel environmentally friendly gas fire extinguishing device for protecting automobile engines is proposed. Summary of the invention

[0004] The object of the present invention is to provide a new environmentally friendly gas fire extinguishing device for protecting automobile engines, so as to solve one of the problems raised in the above background technology.

[0005] The present invention is implemented by the following technical scheme: a new environmentally friendly gas fire extinguishing device for protecting automobile engines, comprising an engine cover, a fire extinguishing assembly is installed on the lower surface of the engine cover, and the fire extinguishing assembly includes a mounting plate, a fire extinguishing agent storage tank, a fire extinguishing pipe, a pipe clamp, a nozzle, a smoke alarm, a joint and a delivery pipe; One end of the delivery pipe is connected to the fire extinguishing agent storage tank, and the other end of the delivery pipe is connected to the fire extinguishing pipe through a joint. The fire extinguishing pipe is fixedly connected to the lower surface of the mounting plate through a pipe clamp, and the mounting plate is fixedly connected to the lower surface of the hood. The nozzles are evenly installed on the outer side wall of the fire extinguishing pipe, and the smoke alarm is installed on the lower surface of the mounting plate. The lower surface of the mounting plate is fixedly connected to a limiting frame, and two mounting grooves are symmetrically provided on both sides of the inner wall of the limiting frame. A limiting assembly is installed inside the mounting groove, and a protective shock-absorbing assembly is provided below the mounting plate, and the protective shock-absorbing assembly is clamped with the limiting frame through a limiting assembly.

[0006] As a further preferred embodiment of the technical solution: the protective shock-absorbing assembly comprises a protective cover, a fixing sleeve, a sliding column and a bottom cover; Two L-shaped limit plates are symmetrically fixedly connected to the upper surface of the protective cover, the bottom cover is fixedly connected to the lower surface of the protective cover by bolts, the fixed sleeve is symmetrically fixedly connected to the lower surface of the bottom cover and the upper surface of the protective cover, the sliding column is slidably connected to the inside of the fixed sleeve, one end of the sliding column is fixedly connected to an arc-shaped limit sleeve, and a damping rod is installed at the other end of the sliding column. The outer wall of the damping rod is sleeved with a support spring, and a limiting slot is provided on the outer wall of the L-shaped limit plate.

[0007] As a further preferred embodiment of the technical solution: the arc-shaped limit clamping sleeve is symmetrically located inside the protective cover, and the upper and lower corresponding arc-shaped limit clamping sleeves are respectively clamped on the two ends and the middle of the fire extinguishing agent storage tank.

[0008] As a further preferred embodiment of the present technical solution: the other end of the damping rod is installed on the inner wall of the fixed sleeve, one end of the support spring supports the sliding column, and the other end of the support spring supports the fixed sleeve, the two L-shaped limit plates are slidably connected to the inner wall of the limit frame, and the limit assembly is inserted into the inside of the limit slot.

[0009] As a further preferred embodiment of the present technical solution: a pressure transmitter and a solenoid valve are installed on the outer side wall of the delivery pipe.

[0010] As a further preferred embodiment of the present technical solution: the limit assembly includes a pull plate, a pull rod, a limit seat and a limit spring; The limit seat is slidably connected to the inner wall of the installation groove, the two ends of the pull rod are respectively fixedly connected to the pull plate and the limit seat, the limit spring is sleeved on the outer wall of the pull rod, one end of the limit spring is fixedly connected to the inner wall of the installation groove, and the other end of the limit spring is fixedly connected to the limit seat.

[0011] As a further preferred embodiment of the technical solution: the protective shock-absorbing assembly includes a protective cover, an arc-shaped limit sleeve, four sliding columns, two support springs, two damping rods, a support plate and a bottom cover; The bottom cover is fixedly connected to the lower surface of the protective cover by bolts, the arc-shaped limit sleeve is symmetrically fixedly connected to the inner top wall of the protective cover and the upper surface of the bottom cover, the two ends of the two damping rods are respectively connected to the support plate and the protective cover, the four sliding columns are symmetrically fixedly connected to the lower surface of the support plate, the two support springs are both sleeved on the outer side walls of the sliding columns, and the bottom end of the sliding column is fixedly connected to the limit plate.

[0012] As a further preferred embodiment of the present technical solution: the protective cover is slidably connected to the outer side walls of the four sliding columns, the two support springs are respectively located inside and outside the protective cover and support the protective cover, and the other ends of the two support springs respectively support the support plate and the limit plate.

[0013] As a further preferred embodiment of the technical solution: the support plate is slidably connected to the inner wall of the limiting frame, and the fire extinguishing agent storage tank is located inside the protective cover and fits against the inner walls of the two corresponding arc-shaped limiting sleeves.

[0014] As a further preferred embodiment of the technical solution: two limiting slots are symmetrically provided on both sides of the support plate, and the limiting components are inserted into the limiting slots.

[0015] Advantages of the present invention: 1. The present invention monitors the internal situation of the engine box through a smoke alarm. When a fire occurs, a signal is sent to the vehicle control system, and the vehicle control system controls the solenoid valve to open. At this time, the heptafluoropropane fire extinguishing agent in the fire extinguishing agent storage tank enters the fire extinguishing pipe through the delivery pipe and is then sprayed out from the nozzle. When the heptafluoropropane gas enters the engine box, it quickly extinguishes the fire point. The fire extinguishing assembly is installed under the engine cover through a mounting plate, and the fire extinguishing pipe is extended to cover the engine box, thereby ensuring the fire extinguishing effect while not occupying additional internal space of the engine box, and facilitating the overall installation; 2. The present invention provides a protective shock-absorbing component, so that the fire extinguishing agent storage tank can be protected from shock during driving. A protective cover is provided on the outside of the fire extinguishing agent storage tank to avoid direct collision with the fire extinguishing agent storage tank, thereby achieving a protective effect. When the vehicle is bumpy when driving on a complex road, the damping rod cooperates with the support spring to achieve a buffering and shock-absorbing effect, thereby reducing the shaking of the fire extinguishing agent storage tank and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the structure of a new environmentally friendly gas fire extinguishing device for protecting automobile engines according to the present invention; Figure 2 This is a schematic diagram of the installation position of the protective shock absorbing assembly of the present invention; Figure 3 It is a schematic diagram of the structure of the fire extinguishing assembly of the present invention; Figure 4 It is a schematic diagram of the structure of the limit assembly of the present invention; Figure 5 It is a schematic diagram of the structure of the limiting frame of the present invention; Figure 6 It is a structural schematic diagram of a protective shock absorbing assembly in the first embodiment of the present invention; Figure 7 It is a schematic diagram of the structural decomposition of the protective shock absorbing assembly in the first embodiment of the present invention; Figure 8 It is a schematic diagram of the protective cover structure of the present invention; Fig. 9 This is a schematic diagram of the arc-shaped limit sleeve structure of the present invention; Fig.10 It is a structural schematic diagram of a protective shock absorbing assembly in a second embodiment of the present invention; Fig.11 It is a schematic diagram of the structural decomposition of the protective shock absorbing assembly in the second embodiment of the present invention; Fig.12 It is a schematic diagram of the sliding column structure of the present invention.

[0018] In the figure: 101, protective shock-absorbing assembly; 11, protective cover; 12, fixing sleeve; 13, limiting slot; 14, L-shaped limiting plate; 15, arc-shaped limiting sleeve; 16, sliding column; 17, supporting spring; 18, damping rod; 19, supporting plate; 20, limiting plate; 21, bottom cover; 301, fire extinguishing assembly; 31, engine cover; 32, mounting plate; 33, limiting frame; 34, fire extinguishing agent storage tank; 35, pressure transmitter; 36, solenoid valve; 37, fire extinguishing pipe; 38, pipe clamp; 39, nozzle; 40, pull plate; 41, pull rod; 42, limiting seat; 43, limiting spring; 44, mounting slot; 45, smoke alarm; 46, joint; 47, delivery pipe; 401, limiting assembly. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Embodiment 1 See also Figure 1-Figure 9 The present invention provides a technical solution: a new environmentally friendly gas fire extinguishing device for protecting automobile engines, comprising an engine cover 31, a fire extinguishing assembly 301 is installed on the lower surface of the engine cover 31, and the fire extinguishing assembly 301 includes a mounting plate 32, a fire extinguishing agent storage tank 34, a fire extinguishing pipe 37, a pipe clamp 38, a nozzle 39, a smoke alarm 45, a joint 46 and a delivery pipe 47; The fire extinguishing agent storage tank 34 stores high-pressure heptafluoropropane gas, which does not contain harmful substances, and thus has a good environmental protection effect when extinguishing a fire; One end of the delivery pipe 47 is connected to the fire extinguishing agent storage tank 34, and the other end of the delivery pipe 47 is connected to the fire extinguishing pipe 37 through the joint 46. The fire extinguishing pipe 37 is fixedly connected to the lower surface of the mounting plate 32 through the pipe clamp 38, and the mounting plate 32 is fixedly connected to the lower surface of the engine cover 31. The nozzle 39 is evenly installed on the outer side wall of the fire extinguishing pipe 37. The position of the fire extinguishing pipe 37 can be limited by the pipe clamp 38. The fire extinguishing pipe 37 is used to deliver the heptafluoropropane gas and then spray it out from the nozzle 39. When the heptafluoropropane gas enters the engine box, it quickly extinguishes the fire point; The fire extinguishing assembly 301 is installed under the engine cover 31 through the mounting plate 32, and the fire extinguishing pipe 37 is extended to cover the engine box, thereby not occupying the internal space of the engine box extra; The smoke alarm 45 is mounted on the lower surface of the mounting plate 32, and the outer wall of the delivery pipe 47 is mounted with a pressure transmitter 35 and a solenoid valve 36. The signal ends of the pressure transmitter 35, the solenoid valve 36 and the smoke alarm 45 are all connected to the signal control system of the vehicle; The pressure value of the fire extinguishing agent storage tank 34 can be monitored in real time through the pressure transmitter 35, and an alarm signal is issued when the pressure value of the fire extinguishing agent storage tank 34 is missing; The internal condition of the engine box can be monitored by the smoke alarm 45. When a fire occurs, a signal is sent to the vehicle control system, and the vehicle control system controls the solenoid valve 36 to open. At this time, the heptafluoropropane fire extinguishing agent in the fire extinguishing agent storage tank 34 enters the fire extinguishing pipe 37 through the delivery pipe 47, thereby performing a fire extinguishing action; The lower surface of the mounting plate 32 is fixedly connected to the limiting frame 33, and two mounting grooves 44 are symmetrically provided on both sides of the inner wall of the limiting frame 33. The limiting assembly 401 is installed inside the mounting groove 44. A protective shock-absorbing assembly 101 is arranged below the mounting plate 32, and the protective shock-absorbing assembly 101 is clamped with the limiting frame 33 through the limiting assembly 401. The protective shock-absorbing assembly 101 is used to achieve shock-absorbing protection for the fire extinguishing agent storage tank 34 to avoid collision of the fire extinguishing agent storage tank 34. The protective shock-absorbing assembly 101 is connected to the limiting frame 33 by clamping.

[0021] In the first embodiment, specifically: the protective shock absorbing assembly 101 includes a protective cover 11, a fixing sleeve 12, a sliding column 16 and a bottom cover 21; Two L-shaped limit plates 14 are symmetrically fixedly connected to the upper surface of the protective cover 11, and the bottom cover 21 is fixedly connected to the lower surface of the protective cover 11 by bolts. The protective shock absorbing assembly 101 can be installed on the mounting plate 32 through the L-shaped limit plates 14. The L-shaped limit plates 14 are slidably connected to the mounting plate 32. The protective cover 11 can be sealed through the bottom cover 21, thereby realizing the protection of the fire extinguishing agent storage tank 34; The fixing sleeve 12 is symmetrically fixedly connected to the lower surface of the bottom cover 21 and the upper surface of the protective cover 11, and the sliding column 16 is slidably connected to the inside of the fixing sleeve 12. One end of the sliding column 16 is fixedly connected to an arc-shaped limit clamping sleeve 15, and the arc-shaped limit clamping sleeve 15 is symmetrically located inside the protective cover 11. The upper and lower corresponding arc-shaped limit clamping sleeves 15 are respectively clamped to the two ends and the middle of the fire extinguishing agent storage tank 34, and then the position of the fire extinguishing agent storage tank 34 can be limited by the arc-shaped limit clamping sleeve 15 to enhance the stability of the fire extinguishing agent storage tank 34. When the vehicle collides or stops suddenly, the fire extinguishing agent storage tank 34 is always fixed in the protective cover 11; A damping rod 18 is installed at the other end of the sliding column 16, and a support spring 17 is sleeved on the outer wall of the damping rod 18. The other end of the damping rod 18 is installed on the inner wall of the fixed sleeve 12. One end of the support spring 17 supports the sliding column 16, and the other end of the support spring 17 supports the fixed sleeve 12. Through the structures such as the damping rod 18, the sliding column 16, the support spring 17 and the fixed sleeve 12, a shock absorbing device can be formed. When the vehicle encounters strong bumps, with the cooperation of the damping rod 18 and the support spring 17, the arc-shaped limit sleeve 15 can be buffered and shock-absorbing to reduce the shaking of the fire extinguishing agent storage tank 34 during driving.

[0022] In embodiment one, specifically: a limiting slot 13 is provided on the outer wall of the L-shaped limiting plate 14, and both L-shaped limiting plates 14 are slidably connected to the inner wall of the limiting frame 33, and the limiting component 401 is inserted into the inside of the limiting slot 13. Through a snap-on connection, the protective cover 11 can be removed according to actual usage so as to replace the internal fire extinguishing agent storage tank 34.

[0023] In the first embodiment, specifically: the limiting assembly 401 includes a pull plate 40, a pull rod 41, a limiting seat 42 and a limiting spring 43; The limiting seat 42 is slidably connected to the inner side wall of the installation slot 44, the two ends of the pull rod 41 are fixedly connected to the pull plate 40 and the limiting seat 42 respectively, the limiting spring 43 is sleeved on the outer side wall of the pull rod 41, one end of the limiting spring 43 is fixedly connected to the inner side wall of the installation slot 44, and the other end of the limiting spring 43 is fixedly connected to the limiting seat 42, the limiting seat 42 is inserted into the inside of the limiting slot 13, and the limiting spring 43 pushes the limiting seat 42, so that the limiting seat 42 is always located in the limiting slot 13, thereby limiting the position of the L-shaped limiting plate 14; When removing the protective cover 11, the pull plate 40 drives the pull rod 41 to slide, and the pull rod 41 drives the limit seat 42, and the limit seat 42 is disengaged from the limit slot 13. At this time, the position limitation of the L-shaped limit plate 14 is released, and the protective cover 11 can be taken out.

[0024] Embodiment 2 See also Figure 10-12 The protective shock-absorbing assembly 101 includes a protective cover 11, an arc-shaped limit sleeve 15, four sliding columns 16, two supporting springs 17, two damping rods 18, a supporting plate 19 and a bottom cover 21; The bottom cover 21 is fixedly connected to the lower surface of the protective cover 11 by bolts, and the arc-shaped limit sleeve 15 is symmetrically fixedly connected to the inner top wall of the protective cover 11 and the upper surface of the bottom cover 21. The arc-shaped limit sleeve 15 is a fixed connection, and the structure is more stable; The two ends of the two damping rods 18 are connected to the support plate 19 and the protective cover 11 respectively. The four sliding columns 16 are symmetrically fixedly connected to the lower surface of the support plate 19. The protective cover 11 is slidably connected to the outer side walls of the four sliding columns 16. The position of the protective cover 11 can be limited by the sliding columns 16. The two support springs 17 are both sleeved on the outer side wall of the sliding column 16, and the bottom end of the sliding column 16 is fixedly connected to the limit plate 20. The two support springs 17 are respectively located inside and outside the protective cover 11 and support the protective cover 11. The other ends of the two support springs 17 respectively support the support plate 19 and the limit plate 20. By arranging the support springs 17 and cooperating with the damping rod 18, a supporting and shock-absorbing effect can be achieved. When the vehicle is bumpy during driving, the support springs 17 are supported by force, and the damping rod 18 buffers the force, thereby ensuring the stability of the protective cover 11.

[0025] In the second embodiment, specifically: the support plate 19 is slidably connected to the inner wall of the limit frame 33, the fire extinguishing agent storage tank 34 is located inside the protective cover 11 and fits the inner walls of the two corresponding arc-shaped limit sleeves 15, and the arc-shaped limit sleeves 15 respectively clamp the two ends and the middle part of the fire extinguishing agent storage tank 34, so that the fire extinguishing agent storage tank 34 can be fixed in the protective cover 11. When the vehicle is bumpy, the protective cover 11 as a whole can be buffered and shock-absorbed through the cooperation of the support spring 17 and the damping rod 18.

[0026] In the second embodiment, specifically: two limit slots 13 are symmetrically provided on both sides of the support plate 19, the limit assembly 401 is inserted into the limit slot 13, and the support plate 19 is connected to the mounting plate 32 by snap-fitting, so as to facilitate the disassembly of the protective cover 11 to maintain or replace the fire extinguishing agent storage tank 34.

[0027] Working principle or structural principle, when in use, the internal situation of the engine box is monitored through the smoke alarm 45, and when a fire is detected, a signal is sent to the vehicle control system, and the vehicle control system controls the solenoid valve 36 to open, at which time the heptafluoropropane fire extinguishing agent in the fire extinguishing agent storage tank 34 enters the fire extinguishing pipe 37 through the delivery pipe 47, and then is sprayed out from the nozzle 39. When the heptafluoropropane gas enters the engine box, the fire point is quickly extinguished; During the driving process of the vehicle, the protective shock-absorbing assembly 101 can realize the shock-absorbing protection of the fire extinguishing agent storage tank 34, and by arranging the protective cover 11 outside the fire extinguishing agent storage tank 34, it can avoid direct collision with the fire extinguishing agent storage tank 34, thereby achieving a protective effect. When the vehicle is driving on a complex road and bumps, the damping rod 18 cooperates with the support spring 17 to play a buffering and shock-absorbing role, reduce the shaking of the fire extinguishing agent storage tank 34, and improve safety. The limit assembly 401 is provided to facilitate maintenance work. When the protective cover 11 is removed, the pull plate 40 drives the pull rod 41 to slide, and the pull rod 41 drives the limit seat 42, and the limit seat 42 is disengaged from the limit slot 13. At this time, the position limitation of the L-shaped limit plate 14 is released, and the protective cover 11 can be taken out, which facilitates the maintenance or replacement of the fire extinguishing agent storage tank 34.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A new environmentally friendly gas fire extinguishing device for protecting automobile engines, characterized in that: It comprises an engine cover (31), a fire extinguishing assembly (301) being mounted on the lower surface of the engine cover (31), the fire extinguishing assembly (301) comprising a mounting plate (32), a fire extinguishing agent storage tank (34), a fire extinguishing pipe (37), a pipe clamp (38), a nozzle (39), a smoke alarm (45), a joint (46) and a delivery pipe (47); One end of the delivery pipe (47) is in communication with the fire extinguishing agent storage tank (34), and the other end of the delivery pipe (47) is in communication with the fire extinguishing pipe (37) via a joint (46). The fire extinguishing pipe (37) is fixedly connected to the lower surface of the mounting plate (32) via a pipe clamp (38), and the mounting plate (32) is fixedly connected to the lower surface of the engine cover (31). The nozzle (39) is evenly mounted on the outer side wall of the fire extinguishing pipe (37), and the smoke alarm (45) is mounted on the lower surface of the mounting plate (32). The lower surface of the mounting plate (32) is fixedly connected to a limiting frame (33), and two mounting grooves (44) are symmetrically provided on both sides of the inner wall of the limiting frame (33). A limiting assembly (401) is installed inside the mounting groove (44), and a protective shock absorbing assembly (101) is arranged below the mounting plate (32). The protective shock absorbing assembly (101) is clamped with the limiting frame (33) via the limiting assembly (401).

2. A novel environmentally friendly gas fire extinguishing device for protecting automobile engines according to claim 1, characterized in that: The protective shock-absorbing assembly (101) comprises a protective cover (11), a fixing sleeve (12), a sliding column (16) and a bottom cover (21); The upper surface of the protective cover (11) is symmetrically fixedly connected to two L-shaped limit plates (14); the bottom cover (21) is fixedly connected to the lower surface of the protective cover (11) by bolts; the fixed sleeve (12) is symmetrically fixedly connected to the lower surface of the bottom cover (21) and the upper surface of the protective cover (11); the sliding column (16) is slidably connected to the interior of the fixed sleeve (12); one end of the sliding column (16) is fixedly connected to an arc-shaped limit sleeve (15); the other end of the sliding column (16) is mounted with a damping rod (18); the outer wall of the damping rod (18) is sleeved with a support spring (17); and the outer wall of the L-shaped limit plate (14) is provided with a limit slot (13).

3. A novel environmentally friendly gas fire extinguishing device for protecting automobile engines according to claim 2, characterized in that: The arc-shaped limit clamping sleeves (15) are symmetrically located inside the protective cover (11), and the upper and lower corresponding arc-shaped limit clamping sleeves (15) are respectively clamped on the two ends and the middle of the fire extinguishing agent storage tank (34).

4. A novel environmentally friendly gas fire extinguishing device for protecting automobile engines according to claim 2, characterized in that: The other end of the damping rod (18) is mounted on the inner side wall of the fixing sleeve (12), one end of the supporting spring (17) supports the sliding column (16), and the other end of the supporting spring (17) supports the fixing sleeve (12), the two L-shaped limiting plates (14) are both slidably connected to the inner side wall of the limiting frame (33), and the limiting assembly (401) is inserted into the inside of the limiting slot (13).

5. A novel environmentally friendly gas fire extinguishing device for protecting automobile engines according to claim 1, characterized in that: A pressure transmitter (35) and a solenoid valve (36) are installed on the outer side wall of the delivery pipe (47).

6. A novel environmentally friendly gas fire extinguishing device for protecting automobile engines according to claim 1, characterized in that: The limiting assembly (401) comprises a pull plate (40), a pull rod (41), a limiting seat (42) and a limiting spring (43); The limit seat (42) is slidably connected to the inner wall of the installation groove (44), the two ends of the pull rod (41) are respectively fixedly connected to the pull plate (40) and the limit seat (42), the limit spring (43) is sleeved on the outer wall of the pull rod (41), one end of the limit spring (43) is fixedly connected to the inner wall of the installation groove (44), and the other end of the limit spring (43) is fixedly connected to the limit seat (42).

7. A novel environmentally friendly gas fire extinguishing device for protecting automobile engines according to claim 1, characterized in that: The protective shock-absorbing assembly (101) comprises a protective cover (11), an arc-shaped limit sleeve (15), four sliding columns (16), two supporting springs (17), two damping rods (18), a supporting plate (19) and a bottom cover (21); The bottom cover (21) is fixedly connected to the lower surface of the protective cover (11) by bolts, the arc-shaped limit sleeve (15) is symmetrically fixedly connected to the inner top wall of the protective cover (11) and the upper surface of the bottom cover (21), the two ends of the two damping rods (18) are respectively connected to the support plate (19) and the protective cover (11), the four sliding columns (16) are symmetrically fixedly connected to the lower surface of the support plate (19), the two support springs (17) are both sleeved on the outer side walls of the sliding columns (16), and the bottom end of the sliding column (16) is fixedly connected to the limit plate (20).

8. A novel environmentally friendly gas fire extinguishing device for protecting automobile engines according to claim 7, characterized in that: The protective cover (11) is slidably connected to the outer side walls of the four sliding columns (16); the two support springs (17) are respectively located inside and outside the protective cover (11) and support the protective cover (11); the other ends of the two support springs (17) respectively support the support plate (19) and the limit plate (20).

9. A novel environmentally friendly gas fire extinguishing device for protecting automobile engines according to claim 7, characterized in that: The support plate (19) is slidably connected to the inner side wall of the limiting frame (33), and the fire extinguishing agent storage tank (34) is located inside the protective cover (11) and fits the inner side walls of two corresponding arc-shaped limiting sleeves (15).

10. A novel environmentally friendly gas fire extinguishing device for protecting automobile engines according to claim 7, characterized in that: Two limiting slots (13) are symmetrically provided on both sides of the support plate (19), and the limiting assembly (401) is inserted into the limiting slots (13).

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