Highway safety identification device

Abstract

The invention provides an expressway safety identification device, and relates to the technical field of expressway safety identification. The highway safety recognition device comprises a mounting rod, highway vertical plates are fixedly connected to the left end and the right end of the mounting rod, pressure plates are fixedly connected to the outer sides of the highway vertical plates, and a vehicle accident camera and a vehicle overspeed camera are fixedly connected to the outer side of the mounting rod. A fixing plate is fixedly connected to the upper side of the highway vertical plate, a top plate is fixedly connected to the upper side of the fixing plate, an anti-collision unit is arranged on the outer side of the mounting rod, and a mounting bottom plate is fixedly connected to the lower side of the highway vertical plate. By arranging protective covers, a connecting plate, a top block, a screw cylinder, a screw rod, a rotating rod and a motor, the protective covers on the left side and the right side can be conveniently controlled to be close to each other oppositely, a vehicle accident camera and a vehicle overspeed camera can be conveniently protected, and it is avoided that when an accident happens, highway monitoring equipment is damaged, and losses are increased.

Description

Technical Field

[0001] The invention relates to the technical field of highway safety identification, in particular to a highway safety identification device. Background Art

[0002] Expressways, or highways for short, are roads designed for high-speed driving of cars. There are different regulations in different countries, regions, eras, and scientific research fields. According to China's Highway Engineering Technical Standards (JTG B01-2014), expressways are defined as multi-lane roads designed for cars to drive in different directions and lanes, with full access control.

[0003] After searching, the application number is "202223353901.8", which provides a highway monitoring device. By setting up a vehicle accident camera, a vehicle speeding camera and a traffic event analysis server, it can effectively identify vehicle accidents and vehicle speeding incidents on the highway, and superimpose the recognition results on the picture taken by the vehicle information camera through a video character superimposer, thereby further improving the monitoring effect.

[0004] The above-mentioned vehicle accident cameras and vehicle speeding cameras are used to shoot the highway to ensure the safety of vehicles traveling on the highway. When an external vehicle loses control and hits the mounting frame on which the monitoring equipment is installed, the monitoring equipment on the mounting frame is easily dropped and damaged, thereby increasing the loss caused by the accident. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the shortcomings of the prior art, the present invention provides a highway safety identification device, which solves the problem that the monitoring and identification equipment is easily dropped and damaged when hit by external vehicles.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a highway safety identification device, comprising a mounting rod, both left and right ends of the mounting rod are fixedly connected to highway vertical plates, the outer side of the highway vertical plates is fixedly connected to a pressure plate, the outer side of the mounting rod is fixedly connected to a vehicle accident camera and a vehicle speeding camera, the upper side of the highway vertical plates is fixedly connected to a fixing plate, the upper side of the fixing plate is fixedly connected to a top plate, the outer side of the mounting rod is provided with an anti-collision unit, and the lower side of the highway vertical plates is fixedly connected to a mounting bottom plate;

[0009] The anti-collision unit includes a plurality of protective covers, which are respectively arranged on the outside of the mounting rod and located on the left and right sides of the vehicle accident camera and the vehicle speeding camera. The front and rear sides of the protective covers on the left and right sides are fixedly connected with airbags. A connecting block 1 is fixedly connected to the upper side of the protective cover, a connecting plate is rotatably connected to the outer side of the connecting block 1, a connecting block 2 is rotatably connected to the outer side of the upper end of the connecting plate, a top block is fixedly connected to the upper side of the connecting block 2, a connecting pipe is fixedly connected between the airbags on the front and rear sides, a connecting hose is fixedly connected between the connecting pipes on the left and right sides, a screw barrel is fixedly connected to the upper side of the top block, and two screws are rotatably connected to the lower side of the top plate.

[0010] Preferably, a rectangular groove is provided on the outer side of the protective cover, a plurality of moving rods are arranged on the inner side of the rectangular groove, the lower end of the moving rod passes through the lower side of the protective cover and is fixedly connected with a protective ball, the upper end of the moving rod is fixedly connected with a control plate, a moving groove is provided on the upper inner wall of the rectangular groove, a moving block is slidably connected to the inner side of the moving groove, a rotating block 1 is fixedly connected to the lower side of the moving block, a rotating plate is rotatably connected to the outer side of the rotating block 1, a rotating block 2 is rotatably connected to the outer side of the lower end of the rotating plate, the rotating block 2 is fixedly connected to the control plate, a spring is fixedly connected between the upper side of the control plate and the upper inner wall of the rectangular groove, a side plate is fixedly connected to the outer side of the moving block, and a contact rod is fixedly connected to the outer side of one side plate. It is convenient to protect the bottom of the monitoring device.

[0011] Preferably, the screw rod is threadedly connected to the barrel, the outer side of the barrel is fixedly connected to a limit plate, the outer side of the fixed plate is provided with a lifting groove, the inner side of the lifting groove is slidably connected to a lifting block, and the lifting block is fixedly connected to the limit plate, so as to facilitate the up and down movement of the barrel.

[0012] Preferably, the upper side of the top plate is rotatably connected to two rotating rods, the rotating rods are fixedly connected to the screw rod, the upper side of the top plate is fixedly connected to an air box, the right side of the air box is fixedly connected to an air intake pipe, a distribution pipe is fixedly connected between the connecting hoses on the left and right sides, an air intake pipe is fixedly connected between the distribution pipe and the air box, a piston plate is slidably connected to the inner side of the air box, a push-pull rod is fixedly connected to the left side of the piston plate, a mounting block is fixedly connected to the left end of the push-pull rod, a push-pull plate is rotatably connected to the outer side of the mounting block, a cam is fixedly connected to the outer side of the rotating rod on the left side, and the cam is rotatably connected to the push-pull plate. It is convenient to control the piston plate to move left and right repeatedly so that the gas enters the air intake pipe.

[0013] Preferably, one-way valves are provided on the outsides of the air inlet pipe and the air intake pipe.

[0014] Preferably, the outer sides of the rotating rods on both sides are fixedly connected with pulleys, a belt is arranged between the two pulleys, a top rod is fixedly connected to the upper side of the top plate, a mounting plate is fixedly connected to the upper end of the top rod, a motor is fixedly connected to the upper side of the mounting plate, and the output end of the motor is fixedly connected to the upper end of the rotating rod, so as to facilitate the control of the rotation of the rotating rod.

[0015] Preferably, the protective cover is slidably connected to the mounting rod, a median plate is fixedly connected to the middle of the mounting rod, and telescopic rods are fixedly connected between the median plate and one side protective cover and between the other side protective cover and the highway vertical plate.

[0016] Preferably, an exhaust pipe is fixedly connected to the outside of the airbag, and a valve is arranged on the outside of the exhaust pipe to facilitate exhaust of the airbag.

[0017] (III) Beneficial effects

[0018] The present invention provides a highway safety identification device, which has the following beneficial effects:

[0019] 1. By providing a protective cover, a connecting plate, a top block, a screw barrel, a screw, a rotating rod and a motor, it is convenient to control the protective covers on the left and right sides to move closer together, so as to protect the vehicle accident camera and the vehicle speeding camera, and avoid damage to the highway monitoring equipment and increase losses when an accident occurs.

[0020] 2. By providing an airbag, a connecting pipe, a connecting hose, a distribution pipe, an air intake pipe and an air box, it is convenient to fill the airbag with gas to expand the airbag, thereby increasing the protection effect on vehicle accident cameras and vehicle speeding cameras and avoiding monitoring damage.

[0021] 3. By providing a rectangular groove, a moving rod, a protective ball, a control plate, a moving block, a rotating plate, a spring, a side plate and a contact rod, when the protective covers on both sides are close to each other, the protective ball on the lower side drops, which is convenient for protecting the lower side of the vehicle accident camera and the vehicle speeding camera and enhancing the protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is the overall three-dimensional structure diagram of the present invention;

[0023] Figure 2 It is a three-dimensional structural diagram of the protective cover in the present invention;

[0024] Figure 3 It is a cross-sectional three-dimensional structural diagram of the protective cover in the present invention;

[0025] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0026] Figure 5It is a three-dimensional structural diagram of the rear view part of the present invention;

[0027] Figure 6 for Figure 5 The enlarged view of point B in the middle;

[0028] Figure 7 It is a sectional three-dimensional structural diagram of the top plate of the present invention;

[0029] Figure 8 It is a partial three-dimensional structural diagram of the anti-collision unit in the present invention.

[0030] Among them, 1. Mounting rod; 2. Highway vertical plate; 3. Mounting bottom plate; 4. Pressure plate; 5. Fixed plate; 6. Top plate; 7. Anti-collision unit; 701. Protective cover; 702. Airbag; 703. Connecting pipe; 704. Exhaust pipe; 705. Connecting hose; 706. Connecting block 1; 707. Connecting plate; 708. Connecting block 2; 709. Top block; 710. Screw barrel; 711. Limiting plate; 712. Lifting block; 713. Rectangular groove; 714. Moving rod; 715. Protective ball; 716. Control board; 717. Spring; 718. Moving groove; 719. Moving block; 720, rotating block one; 721, rotating plate; 722, rotating block two; 723, side plate; 724, contact rod; 726, distribution pipe; 727, air intake pipe; 728, lifting slot; 729, screw; 730, rotating rod; 731, pulley; 732, belt; 733, cam; 734, push-pull plate; 735, mounting block; 736, push-pull rod; 737, push rod; 738, mounting plate; 739, motor; 740, air box; 741, intake pipe; 742, piston plate; 8, vehicle accident camera; 9, vehicle speeding camera; 10, telescopic rod; 11, median plate. DETAILED DESCRIPTION

[0031] 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.

[0032] Embodiment 1:

[0033] like Figure 1 - Figure 8As shown, the highway safety identification device includes a mounting rod 1, the left and right ends of the mounting rod 1 are fixedly connected to the highway vertical plate 2, the outer side of the highway vertical plate 2 is fixedly connected to the pressure plate 4, the outer side of the mounting rod 1 is fixedly connected to the vehicle accident camera 8 and the vehicle speeding camera 9, the upper side of the highway vertical plate 2 is fixedly connected to the fixing plate 5, the upper side of the fixing plate 5 is fixedly connected to the top plate 6, the outer side of the mounting rod 1 is provided with an anti-collision unit 7, the lower side of the highway vertical plate 2 is fixedly connected to the mounting bottom plate 3, the vehicle accident camera 8 and the vehicle speeding camera 9 are arranged therein, which are convenient for shooting accidents and speeding vehicles on the highway, and the external control box is electrically connected, the control box is electrically connected to the pressure plate 4, the inner side of the pressure plate 4 is provided with a pressure sensor, and the pressure sensor is electrically connected to the motor 739. When an accident occurs outside, when the accident vehicle hits the pressure plate 4, under the action of the control box, it is convenient to control the motor 739 to start, so that the anti-collision unit 7 can protect the vehicle accident camera 8 and the vehicle speeding camera 9 to prevent the vehicle accident camera 8 and the vehicle speeding camera 9 from falling and being damaged.

[0034] The anti-collision unit 7 includes a plurality of protective covers 701, which are respectively arranged on the outside of the mounting rod 1 and located on the left and right sides of the vehicle accident camera 8 and the vehicle speeding camera 9. The front and rear sides of the left and right protective covers 701 are fixedly connected with airbags 702. The upper side of the protective cover 701 is fixedly connected with a connecting block 1 706, and the outer side of the connecting block 1 706 is rotatably connected with a connecting plate 707. The outer side of the upper end of the connecting plate 707 is rotatably connected with a connecting block 2 708, and the upper side of the connecting block 2 708 is fixedly connected with a top block 709. A connecting pipe 703 is fixedly connected between the front and rear airbags 702, a connecting hose 705 is fixedly connected between the left and right connecting pipes 703, a screw barrel 710 is fixedly connected to the upper side of the top block 709, and the top plate The lower side of the top plate 6 is rotatably connected to two screw rods 729, the protective cover 701 is slidably connected to the mounting rod 1, the middle part of the mounting rod 1 is fixedly connected to a median plate 11, the median plate 11 and the protective cover 701 on one side, and the other side The protective cover 701 and the highway vertical plate 2 are fixedly connected with a telescopic rod 10, the screw rod 729 is threadedly connected to the screw barrel 710, the outer side of the screw barrel 710 is fixedly connected to a limit plate 711, the outer side of the fixed plate 5 is provided with a lifting groove 728, the inner side of the lifting groove 728 is slidably connected to a lifting block 712, the lifting block 712 is fixedly connected to the limit plate 711, the upper side of the top plate 6 is rotatably connected to two rotating rods 730, the rotating rod 730 is fixedly connected to the screw 729, the upper side of the top plate 6 is fixedly connected to an air box 740, the air box 740 The right side of the device is fixedly connected with an intake pipe 741, a distribution pipe 726 is fixedly connected between the connecting hoses 705 on the left and right sides, an intake pipe 727 is fixedly connected between the distribution pipe 726 and the air box 740, a piston plate 742 is slidably connected to the inner side of the air box 740, a push-pull rod 736 is fixedly connected to the left side of the piston plate 742, a mounting block 735 is fixedly connected to the left end of the push-pull rod 736, a push-pull plate 734 is rotatably connected to the outer side of the mounting block 735, a cam 733 is fixedly connected to the outer side of the left rotating rod 730, the cam 733 is rotatably connected to the push-pull plate 734, a one-way valve is arranged on the outer side of the intake pipe 727 and the intake pipe 741, a pulley 731 is fixedly connected to the outer side of the rotating rods 730 on both sides, and a belt 731 is arranged between the two pulleys 731. 32. A top rod 737 is fixedly connected to the upper side of the top plate 6. A mounting plate 738 is fixedly connected to the upper end of the top rod 737. A motor 739 is fixedly connected to the upper side of the mounting plate 738. The output end of the motor 739 is fixedly connected to the upper end of the rotating rod 730. When an external accident vehicle hits the highway vertical plate 2, the motor 739 is started, and the motor 739 drives the right rotating rod 730 to rotate. The rotating rod 730 drives the pulley 731 to rotate. Under the action of the belt 732, the rotating rods 730 on both sides rotate at the same time. The rotating rod 730 drives the screw rod 729 to rotate. Since the screw rod 729 is threadedly connected to the screw barrel 710, the screw rod 729 drives the screw barrel 710 to rise. The screw barrel 710 drives the top block 709 to rise. The top block 709 drives the connecting plate 707 to rotate.The left and right connecting plates 707 are closed, and the connecting plates 707 drive the protective cover 701 to move, so that the left and right protective covers 701 are close to each other, so that the protective covers 701 on both sides cover the vehicle accident camera 8 and the vehicle speeding camera 9, which is convenient for protecting the vehicle accident camera 8 and the vehicle speeding camera 9 and avoiding damage to the vehicle accident camera 8 and the vehicle speeding camera 9. At the same time, the left rotating rod 730 rotates, the rotating rod 730 drives the cam 733 to rotate, the cam 733 drives the push-pull plate 734 to rotate, the push-pull plate 734 drives the push-pull rod 736 to move, and the push-pull rod 736 drives the piston plate 742 to move, so that the piston plate 742 moves left and right repeatedly. When the piston plate 742 moves left, the one-way valve on the air intake pipe 741 allows the external airflow to enter the air box 740. When the piston plate 742 moves right, the one-way valve on the air intake pipe 727 allows the gas in the air box 740 to enter the air intake pipe 727, and the gas is distributed to the air bags 702 on the front and rear sides through the distribution pipe 726, the connecting hose 705 and the connecting pipe 703, so that the air bags 702 expand, so that the air bags 702 can buffer the impact force on the front and rear sides, and the protection of the front and rear sides of the vehicle accident camera 8 and the vehicle speed camera 9 is convenient, and the protection effect is increased.

[0035] An exhaust pipe 704 is fixedly connected to the outside of the airbag 702. A valve is provided on the outside of the exhaust pipe 704. By opening the valve, the gas in the airbag 702 can be easily discharged, which facilitates the separation of the protective covers 701 on both sides from each other in the later stage.

[0036] Embodiment 2:

[0037] A rectangular groove 713 is provided on the outer side of the protective cover 701, and a plurality of moving rods 714 are arranged on the inner side of the rectangular groove 713. The lower end of the moving rod 714 passes through the lower side of the protective cover 701 and is fixedly connected to a protective ball 715. The upper end of the moving rod 714 is fixedly connected to a control plate 716. A moving groove 718 is provided on the upper inner wall of the rectangular groove 713. A moving block 719 is slidably connected to the inner side of the moving groove 718. A rotating block 720 is fixedly connected to the lower side of the moving block 719. A rotating plate 721 is rotatably connected to the outer side of the rotating block 1 720. A rotating block 2 722 is rotatably connected to the outer side of the lower end of the rotating plate 721. The rotating block 2 722 is fixedly connected to the control plate 716. A spring 717 is fixedly connected between the upper side of the control plate 716 and the upper inner wall of the rectangular groove 713. A side plate 723 is fixedly connected to the outer side of the moving block 719. A contact rod 724 is fixedly connected to the outer side of 723. When the protective covers 701 on both sides approach each other, the protective cover 701 on one side drives the contact rod 724 to move, and the contact rod 724 presses against the side plate 723 on the other side, driving the side plate 723 to move. Since the force is mutual, the moving block 719 on the contact rod 724 moves, and the moving blocks 719 on both sides move away from each other. The moving block 719 drives the rotating plate 721 to drive the control plate 716 to descend, and the control plate 716 drives the moving rod 714 to descend, and the moving rod 714 drives the protective ball 715 to descend, so that multiple protective balls 715 protect the lower side of the vehicle accident camera 8 and the vehicle speeding camera 9 to avoid damage to the vehicle accident camera 8 and the vehicle speeding camera 9. When the protective covers 701 on both sides are separated, under the action of the spring 717, the protective ball 715 is easy to reset, which is convenient for next use.

[0038] Working principle: When in use, the accident camera 8 and the speeding camera 9 are used to monitor accidents and speeding vehicles on the highway. When the accident vehicle hits the highway vertical plate 2, the motor 739 is started, the motor 739 drives the rotating rod 730 to rotate, and the rotating rod 730 drives the screw 729 to rotate. Under the action of the screw barrel 710, the top block 709 and the connecting plate 707, it is easy to control the protective covers 701 on the left and right sides to approach each other, so that the protective covers 701 on the left and right sides protect the accident camera 8 and the speeding camera 9. At the same time, the rotating rod 730 drives the cam 733 to rotate. Under the action of plate 734, push-pull rod 736 and piston plate 742, external gas enters into the air intake pipe 727, and under the action of connecting hose 705 and exhaust pipe 704, the airbags 702 on the front and rear sides are easily expanded, so as to protect the front and rear sides of the vehicle accident camera 8 and the vehicle speeding camera 9. When the protective covers 701 on both sides are close to each other, under the action of contact rod 724, side plate 723, moving block 719 and rotating plate 721, it is convenient to control the protective ball 715 on the moving rod 714 to descend, so as to protect the lower side of the vehicle accident camera 8 and the vehicle speeding camera 9 and avoid damage.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A highway safety identification device, comprising a mounting rod (1), the left and right ends of the mounting rod (1) are fixedly connected to a highway vertical plate (2), the outer side of the highway vertical plate (2) is fixedly connected to a pressure plate (4), the outer side of the mounting rod (1) is fixedly connected to a vehicle accident camera (8) and a vehicle speeding camera (9), characterized in that: The upper side of the highway vertical plate (2) is fixedly connected to a fixing plate (5), the upper side of the fixing plate (5) is fixedly connected to a top plate (6), an anti-collision unit (7) is arranged on the outer side of the mounting rod (1), and the lower side of the highway vertical plate (2) is fixedly connected to a mounting bottom plate (3); The anti-collision unit (7) comprises a plurality of protective covers (701), the plurality of protective covers (701) being respectively arranged on the outside of the mounting rod (1) and located on the left and right sides of the vehicle accident camera (8) and the vehicle speed camera (9), the front and rear sides of the left and right protective covers (701) are both fixedly connected to airbags (702), the upper side of the protective cover (701) is fixedly connected to a connecting block 1 (706), the outer side of the connecting block 1 (706) is rotatably connected to a connecting plate (707), The outer side of the upper end of the connecting plate (707) is rotatably connected to a connecting block 2 (708), the upper side of the connecting block 2 (708) is fixedly connected to a top block (709), a connecting pipe (703) is fixedly connected between the front and rear air bags (702), a connecting hose (705) is fixedly connected between the left and right connecting pipes (703), a screw barrel (710) is fixedly connected to the upper side of the top block (709), and two screw rods (729) are rotatably connected to the lower side of the top plate (6).

2. The highway safety identification device according to claim 1, characterized in that: A rectangular groove (713) is provided on the outer side of the protective cover (701), a plurality of moving rods (714) are provided on the inner side of the rectangular groove (713), the lower end of the moving rod (714) passes through the lower side of the protective cover (701) and is fixedly connected to a protective ball (715), the upper end of the moving rod (714) is fixedly connected to a control plate (716), a moving groove (718) is provided on the upper inner wall of the rectangular groove (713), a moving block (719) is slidably connected to the inner side of the moving groove (718), and the lower side of the moving block (719) is fixedly connected to the control plate (716). The movable block (719) is fixedly connected with a rotating block 1 (720), the outer side of the rotating block 1 (720) is rotatably connected with a rotating plate (721), the outer side of the lower end of the rotating plate (721) is rotatably connected with a rotating block 2 (722), the rotating block 2 (722) is fixedly connected with a control plate (716), a spring (717) is fixedly connected between the upper side of the control plate (716) and the upper inner wall of the rectangular groove (713), the outer side of the movable block (719) is fixedly connected with a side plate (723), and the outer side of one side of the side plate (723) is fixedly connected with a contact rod (724).

3. The highway safety identification device according to claim 1, characterized in that: The screw rod (729) is threadedly connected to the screw barrel (710); the outer side of the screw barrel (710) is fixedly connected to a limit plate (711); a lifting groove (728) is provided on the outer side of the fixed plate (5); a lifting block (712) is slidably connected to the inner side of the lifting groove (728); and the lifting block (712) is fixedly connected to the limit plate (711).

4. The highway safety identification device according to claim 1, characterized in that: The upper side of the top plate (6) is rotatably connected to two rotating rods (730), the rotating rods (730) are fixedly connected to the screw rod (729), the upper side of the top plate (6) is fixedly connected to an air box (740), the right side of the air box (740) is fixedly connected to an air intake pipe (741), a distribution pipe (726) is fixedly connected between the connecting hoses (705) on the left and right sides, and an air intake pipe (727) is fixedly connected between the distribution pipe (726) and the air box (740). ), the inner side of the air box (740) is slidably connected to a piston plate (742), the left side of the piston plate (742) is fixedly connected to a push-pull rod (736), the left end of the push-pull rod (736) is fixedly connected to a mounting block (735), the outer side of the mounting block (735) is rotatably connected to a push-pull plate (734), the outer side of the left rotating rod (730) is fixedly connected to a cam (733), and the cam (733) is rotatably connected to the push-pull plate (734).

5. The highway safety identification device according to claim 4, characterized in that: One-way valves are provided on the outsides of the air inlet pipe (727) and the air suction pipe (741).

6. The highway safety identification device according to claim 4, characterized in that: The outer sides of the rotating rods (730) on both sides are fixedly connected with pulleys (731), a belt (732) is arranged between the two pulleys (731), the upper side of the top plate (6) is fixedly connected with a top rod (737), the upper end of the top rod (737) is fixedly connected with a mounting plate (738), the upper side of the mounting plate (738) is fixedly connected with a motor (739), and the output end of the motor (739) is fixedly connected to the upper end of the rotating rod (730).

7. The highway safety identification device according to claim 1, characterized in that: The protective cover (701) is slidably connected to the mounting rod (1); a middle plate (11) is fixedly connected to the middle of the mounting rod (1); telescopic rods (10) are fixedly connected between the middle plate (11) and the protective cover (701) on one side and between the protective cover (701) on the other side and the highway vertical plate (2).

8. The highway safety identification device according to claim 1, characterized in that: An exhaust pipe (704) is fixedly connected to the outer side of the air bag (702), and a valve is arranged on the outer side of the exhaust pipe (704).

Images