Multi-stage buffer equipment shield

Abstract

The invention discloses a multi-stage buffer equipment shield, which is applied to the technical field of equipment protection, and is provided with a capturing mechanism and a transmission mechanism, so that when a vehicle is about to collide with road equipment, an intercepting net can intercept the vehicle, and the collided part of the vehicle is wrapped by a net structure to avoid secondary displacement of the vehicle; afterwards, a transmission rod conveys gas from a pneumatic cylinder to a pressure assembly along with impact on an intercepting net, the pressure assembly is limited through a positioning frame, the gas can be conveyed into a centralizing pipe in a centralized mode through a gas guiding pipe, and finally gas pressure is conveyed to a locking clamping sleeve through the centralizing pipe. The trigger bead can be separated from the locking clamping sleeve after being subjected to strong air pressure, so that the trigger bead is emitted to the air generator, the air generator is started, and the air generator can quickly release air and supply the air to the buffer mechanism through the flow equalizing pipe.

Description

Technical Field

[0001] The invention belongs to the technical field of equipment protection, and in particular relates to a multi-stage buffer equipment shield. Background Art

[0002] During road construction and maintenance, various types of road equipment such as traffic lights, speed cameras, roadside distribution boxes, etc., often face the risk of vehicle collision. Once a collision occurs, the equipment is easily damaged, the maintenance cost is high and it affects traffic operations. Traditional simple protective measures are difficult to cope with the impact force of high-speed vehicles. Therefore, there is an urgent need for an efficient protective device that can provide multi-level buffering at the moment of collision, absorb and disperse energy, reduce the degree of damage to the equipment, and ensure the safe and stable operation of road equipment.

[0003] At present, a Chinese invention with publication number: CN113774836B discloses a road buffering and speed reduction safety guardrail, including an anti-collision guardrail, a support rod, a secondary anti-collision spring, a secondary protective member, a buffering and shock-absorbing spring, an anti-collision guardrail, a second support rod, a first-level anti-collision spring, a first-level protective member, a connecting support plate, a vehicle speed bump, an anti-drop grid, an angle-inclined reinforcement rod and an anti-drop protective net, wherein the support rod is arranged on the first anti-collision guardrail, the second-level anti-collision spring is arranged on the first support rod, the second-level protective member is arranged on the second anti-collision spring, the buffering and shock-absorbing spring is arranged on the first anti-collision guardrail, the second anti-collision guardrail is arranged on the buffering and shock-absorbing spring, the support rod is arranged on the second anti-collision guardrail, and the first-level anti-collision spring is arranged on the second support rod. The present invention belongs to the technical field of road guardrails, and specifically is a road buffering and speed reduction safety guardrail, which effectively solves the problem of poor protection effect of road guardrails on the market, and effectively reduces casualties caused by traffic accidents by setting multi-level protection.

[0004] Existing multi-level buffer equipment shields have the following disadvantages when dealing with impacts:

[0005] 1. When the traffic equipment encounters an accidental collision with a vehicle, due to the lack of a structure that automatically triggers the buffer in response to the collision, it is unable to automatically buffer the impacting vehicle, reducing the stability of the protection of the vehicle and traffic equipment;

[0006] 2. When the traffic equipment encounters an unexpected collision with a vehicle for buffering, due to the lack of a structure to position the vehicle when buffering the impacted vehicle, the vehicle cannot be positioned to prevent a secondary collision, which reduces the stability of the vehicle buffering. Summary of the invention

[0007] The object of the present invention is to provide a multi-stage buffer device shield with the advantages that:

[0008] 1. When the traffic equipment is hit by a vehicle unexpectedly, it can automatically buffer the impacting vehicle due to the structure that automatically triggers the buffer in response to the impact, thus improving the stability of the protection of the vehicle and traffic equipment;

[0009] 2. When the traffic equipment encounters an unexpected collision with a vehicle for buffering, since it has a structure for positioning the vehicle when buffering the impacted vehicle, the vehicle can be positioned to prevent a secondary collision, thereby improving the stability of the vehicle buffering.

[0010] The above technical objectives of the present invention are achieved through the following technical solutions: a multi-stage buffer device shield, comprising a capture mechanism, a transmission mechanism and a buffer mechanism, wherein the transmission mechanism is fixedly connected to the inner side of the capture mechanism, and the buffer mechanism is fixedly connected to the front side of the inner side of the transmission mechanism;

[0011] The capture mechanism includes an interception net, a transmission rod and a pneumatic cylinder, wherein four transmission rods are respectively fixedly connected to both sides of the top of the rear side of the interception net and both sides of the bottom of the rear side, and the pneumatic cylinder is fixedly connected to the rear side of the transmission rod;

[0012] The transmission mechanism includes a positioning frame, a pressure assembly, an air generator and a flow equalizing tube, the tops of both sides of the positioning frame and the bottoms of both sides are fixedly connected to the inner side of the pneumatic cylinder, the pressure assembly is fixedly connected to the inner side of the positioning frame, the air generator is connected to the front side of the pressure assembly, and the flow equalizing tube is connected to both sides of the air generator;

[0013] The pressure assembly includes an air bleed pipe, a centralizing pipe, a locking sleeve and a trigger bead. The two sides of the top and the two sides of the bottom of the two air bleed pipes are respectively fixedly connected to the two sides of the bottom of the inner side of the positioning frame and the two sides of the inner top. The two sides of the top and the two sides of the bottom of the air bleed pipe are both connected to the pneumatic cylinder. The two centralizing pipes are respectively connected to the top and the bottom of the inner side of the air bleed pipe. The locking sleeve is connected to the inner side of the centralizing pipe. The trigger bead is clamped on the inner side of the locking sleeve. The front side of the centralizing pipe is connected to the rear side of the air generator.

[0014] The buffer mechanism includes a limit frame, a partition plate and an airbag, which is fixedly connected to the front side of the positioning frame, and the partition plate is fixedly connected to the inner side of the limit frame. Two airbags are respectively clamped on both sides of the partition plate, and the surface of the airbag is clamped to the inner side of the limit frame. The rear side of the airbag is connected to the front side of the flow equalizing tube.

[0015] Adopt the above technical solution and set up.

[0016] The present invention is further configured as follows: buffer balls are fixedly connected to both sides of the top and both sides of the bottom of the intercepting net, the rear side of the buffer ball is fixedly connected to the front side of the transmission rod, and the surface of the buffer ball is provided with an anti-wear sleeve.

[0017] By adopting the above technical solution, the connection between the interception net and the transmission rod can be protected by setting a buffer ball. At the same time, since the buffer ball is spherical, the damage caused by contact with the colliding vehicle can be reduced. The anti-wear sleeve can protect the buffer ball and extend the service life of the buffer ball.

[0018] The present invention is further configured as follows: a protective cover is provided on the surface of the interception net, and a corrosion-resistant coating is coated on the surface of the protective cover.

[0019] By adopting the above technical solution, the surface of the interception net can be protected by setting a protective cover, thereby blocking the impact of the vehicle and increasing the impact resistance effect of the interception net. The corrosion-resistant coating can make the protective cover corrosion-resistant.

[0020] The present invention is further configured as follows: the top and the bottom of the air duct are fixedly connected with a reinforcement plate, and the side of the reinforcement plate away from the centralizing pipe is fixedly connected to the inner side of the positioning frame.

[0021] By adopting the above technical solution, the connection between the air duct and the positioning frame can be supplementarily reinforced by setting a reinforcement plate, thereby further increasing the stability of the connection between the air duct and the positioning frame.

[0022] The present invention is further configured as follows: a pressure-resistant sleeve is provided on the inner side of the centralizing pipe, and a waterproof coating is coated on the inner side of the pressure-resistant sleeve.

[0023] By adopting the above technical solution, a pressure-resistant sleeve is provided to protect the inner wall of the centralizing pipe, thereby increasing the resistance of the centralizing pipe to pressure. At the same time, the waterproof coating can intercept water when air compression produces water vapor, thereby preventing water from corroding the centralizing pipe and extending the service life of the centralizing pipe.

[0024] The present invention is further configured as follows: a connecting plate is fixedly connected to the top and the bottom of the rear side of the positioning frame, and a mounting frame is fixedly connected to the rear side of the connecting plate.

[0025] By adopting the above technical solution, by providing a connecting plate and a mounting frame, the connecting plate can support and limit the mounting frame, so that the mounting frame can be installed on the road equipment, thereby protecting the road equipment.

[0026] The present invention is further configured as follows: the top of the left side and the bottom of the left side of the positioning frame are both fixedly connected with a connecting sleeve frame, and the top of the right side and the bottom of the right side of the positioning frame are both fixedly connected with a connecting clamping frame.

[0027] By adopting the above technical solution, by setting up a connecting sleeve and a connecting clamping frame, and connecting the connecting sleeve on the current positioning frame with the connecting clamping frame on another identical positioning frame, when there are multiple adjacent road equipment that need to be protected at the same time, multiple transmission mechanisms can protect the road equipment at the same time.

[0028] The present invention is further configured as follows: a gripping plate is fixedly connected to the bottom of the positioning frame, and the bottom of the gripping plate is configured to be tooth-shaped.

[0029] By adopting the above technical solution, the bottom of the positioning frame can be protected by providing a gripping plate, and the stability when in contact with the ground can be increased by the toothed structure.

[0030] The present invention is further configured as follows: a top, a front side and a bottom of the front side of the safety airbag are all fixedly connected with a buffer soft plate, and the front side of the buffer soft plate is configured as a trapezoid.

[0031] By adopting the above technical solution, the surface of the airbag can be protected by providing a buffer soft plate, and the trapezoidal design can better adapt to the shape of the vehicle, thereby facilitating changing the shape of the airbag to adapt to the shape of the vehicle.

[0032] The present invention is further configured as follows: the surface of the safety airbag is connected to an exhaust pipe, and the diameter of the exhaust pipe is smaller than the flow equalizing pipe.

[0033] By adopting the above technical solution and providing an exhaust pipe, after the airbag is filled with gas and intercepts the vehicle, the internal gas can be gradually discharged through the exhaust pipe to facilitate subsequent rescue operations.

[0034] In summary, the present invention has the following beneficial effects:

[0035] 1. By setting up a capture mechanism and a transmission mechanism, when a vehicle is about to collide with road equipment, the interception net will intercept the vehicle and wrap the impact part of the vehicle through a mesh structure to prevent the vehicle from secondary displacement. After that, the transmission rod will transport the gas from the pneumatic cylinder to the pressure component as the interception net is impacted. Through the positioning frame to limit the pressure component, the gas can be concentrated through the air duct to the central pipe, and finally the air pressure is transported to the locking sleeve through the central pipe. The trigger bead will detach from the locking sleeve after being subjected to strong air pressure, so that the trigger bead will be launched to the air generator, and the air generator will be started. The air generator will quickly release the gas and send it to the buffer mechanism through the flow equalization pipe;

[0036] 2. By setting up a buffer mechanism, the limit frame can limit the partition plate and the airbag, and the air pressure is transmitted to the airbag through the transmission mechanism. The airbag can expand rapidly after inflation, thereby buffering the vehicle and achieving the effect of automatic buffering of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 It is a schematic diagram of the structure of the capture mechanism of the present invention;

[0039] Figure 3 It is a schematic diagram of the transmission mechanism structure of the present invention;

[0040] Figure 4 It is a schematic diagram of the structure of the pressure assembly of the present invention;

[0041] Figure 5 It is a schematic diagram of the structure of the compression sleeve of the present invention;

[0042] Figure 6 It is a schematic diagram of the structure of the mounting frame of the present invention;

[0043] Figure 7 It is a schematic diagram of the structure of the buffer mechanism of the present invention;

[0044] Figure 8 It is a schematic diagram of the exhaust pipe structure of the present invention.

[0045] Figure numerals: 1. Capture mechanism; 101. Intercepting net; 102. Transmission rod; 103. Pneumatic cylinder; 2. Transmission mechanism; 201. Positioning frame; 202. Pressure assembly; 2021. Air duct; 2022. Concentrating pipe; 2023. Locking sleeve; 2024. Trigger bead; 203. Air generator; 204. Flow equalizing pipe; 3. Buffer mechanism; 301. Limiting frame; 302. Partition plate; 303. Airbag; 4. Buffer ball; 5. Protective cover; 6. Reinforcement plate; 7. Pressure-resistant cover; 8. Connecting plate; 9. Mounting frame; 10. Connecting frame; 11. Connecting card frame; 12. Grip floor; 13. Soft buffer plate; 14. Exhaust pipe. DETAILED DESCRIPTION

[0046] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0047] Embodiment 1:

[0048] refer to Figure 1-6A multi-stage buffer device shield comprises a capture mechanism 1 and a transmission mechanism 2, wherein the transmission mechanism 2 is fixedly connected to the inner side of the capture mechanism 1; the capture mechanism 1 comprises an interception net 101, a transmission rod 102 and a pneumatic cylinder 103, wherein four transmission rods 102 are respectively fixedly connected to both sides of the top of the rear side and both sides of the bottom of the rear side of the interception net 101, and the pneumatic cylinder 103 is fixedly connected to the rear side of the transmission rod 102; the transmission mechanism 2 comprises a positioning frame 201, a pressure assembly 202, an air generator 203 and a flow equalizing pipe 204, wherein the top of both sides of the positioning frame 201 and the bottom of both sides are connected to the pneumatic cylinder 103 The pressure assembly 202 is fixedly connected to the inner side of the positioning frame 201, the air generator 203 is connected to the front side of the pressure assembly 202, and the flow equalizing pipe 204 is connected to both sides of the air generator 203; the pressure assembly 202 includes an air duct 2021, a central pipe 2022, a locking sleeve 2023 and a trigger bead 2024, and the two sides of the top and the two sides of the bottom of the two air ducts 2021 are respectively fixedly connected to the two sides of the bottom of the inner side of the positioning frame 201 and the two sides of the top of the inner side of the positioning frame 201. The two sides of the top and the two sides of the bottom of the air duct 2021 are both connected to the pneumatic cylinder 103, and the two The centralizing pipes 2022 are respectively connected to the top and the bottom of the inner side of the air duct 2021, the locking sleeve 2023 is connected to the inner side of the centralizing pipe 2022, the trigger bead 2024 is clamped on the inner side of the locking sleeve 2023, and the front side of the centralizing pipe 2022 is connected to the rear side of the air generator 203. By setting the capture mechanism 1 and the transmission mechanism 2, when the vehicle is about to collide with the road equipment, the interception net 101 will intercept the vehicle and wrap the impact part of the vehicle through the mesh structure to avoid secondary displacement of the vehicle. After that, the transmission rod 102 will move along with the interception net 101. The impact transports the gas from the pneumatic cylinder 103 to the pressure component 202. By limiting the pressure component 202 through the positioning frame 201, the gas can be concentratedly transported to the central pipe 2022 through the air duct 2021, and finally the air pressure is transported to the locking sleeve 2023 through the central pipe 2022. The trigger bead 2024 will be detached from the locking sleeve 2023 after being subjected to strong air pressure, so that the trigger bead 2024 will be launched to the air generator 203, and the air generator 203 will be started. The air generator 203 will quickly release the gas and send it to the buffer mechanism 3 through the flow equalizing pipe 204.

[0049] like Figure 2 As shown, buffer balls 4 are fixedly connected to both sides of the top and bottom of the intercepting net 101, the rear side of the buffer ball 4 is fixedly connected to the front side of the transmission rod 102, and an anti-wear sleeve is provided on the surface of the buffer ball 4. By setting the buffer ball 4, the connection between the intercepting net 101 and the transmission rod 102 can be protected. At the same time, since it is spherical, it can reduce the damage caused by contact with the colliding vehicle. The anti-wear sleeve can protect the buffer ball 4 and extend the service life of the buffer ball 4.

[0050] like Figure 2 As shown, the surface of the interception net 101 is provided with a protective cover 5, and the surface of the protective cover 5 is coated with corrosion-resistant paint. By providing the protective cover 5, the surface of the interception net 101 can be protected, thereby blocking the impact of the vehicle, increasing the impact resistance effect of the interception net 101, and the corrosion-resistant paint can make the protective cover 5 corrosion-resistant.

[0051] like Figure 4 As shown, the top and bottom of the air duct 2021 are fixedly connected with a reinforcement plate 6, and the side of the reinforcement plate 6 away from the central pipe 2022 is fixedly connected to the inner side of the positioning frame 201. By setting the reinforcement plate 6, the connection between the air duct 2021 and the positioning frame 201 can be auxiliary reinforced, further increasing the stability of the air duct 2021 when connected to the positioning frame 201.

[0052] like Figure 5 As shown, a pressure-resistant sleeve 7 is provided on the inner side of the concentrated pipe 2022, and a waterproof coating is coated on the inner side of the pressure-resistant sleeve 7. By providing the pressure-resistant sleeve 7, the inner wall of the concentrated pipe 2022 can be protected, thereby increasing the resistance of the concentrated pipe 2022 to pressure. Meanwhile, the waterproof coating can intercept water when water vapor is generated by air compression, thereby preventing water from corroding the concentrated pipe 2022 and extending the service life of the concentrated pipe 2022.

[0053] like Figure 6 As shown, the top and bottom of the rear side of the positioning frame 201 are fixedly connected with a connecting plate 8, and the rear side of the connecting plate 8 is fixedly connected with a mounting frame 9. By setting the connecting plate 8 and the mounting frame 9, the connecting plate 8 can support and limit the mounting frame 9, so that the mounting frame 9 can be installed on the road equipment, thereby protecting the road equipment.

[0054] like Figure 6 As shown, the top of the left side and the bottom of the left side of the positioning frame 201 are fixedly connected with a connecting sleeve 10, and the top of the right side and the bottom of the right side of the positioning frame 201 are fixedly connected with a connecting clamp 11. By setting the connecting sleeve 10 and the connecting clamp 11, the connecting sleeve 10 on the current positioning frame 201 is connected with the connecting clamp 11 on another identical positioning frame 201. When there are multiple adjacent road equipment that need to be protected at the same time, multiple transmission mechanisms 2 can protect the road equipment at the same time.

[0055] like Figure 6 As shown, the bottom of the positioning frame 201 is fixedly connected with a gripping plate 12, and the bottom of the gripping plate 12 is configured to be toothed. By configuring the gripping plate 12, the bottom of the positioning frame 201 can be protected, and the toothed structure can increase stability when in contact with the ground.

[0056] A brief description of the usage process: First, when a vehicle is about to collide with road equipment, the interception net 101 will wrap and intercept the vehicle, and then the transmission rod 102 will push the pneumatic cylinder 103 along with the interception net 101, and the pneumatic cylinder 103 will transmit the air pressure to the air duct 2021, and the air duct 2021 will concentrate the air pressure to the central pipe 2022, and the central pipe 2022 will transmit the air pressure to the trigger bead 2024 in the locking sleeve 2023. After being pushed by the air pressure, the trigger bead 2024 is launched to the air generator 203, and the air generator 203 will be hit by the trigger bead 2024 to generate gas, and the gas is transmitted to the buffer mechanism 3 through the flow equalizing pipe 204.

[0057] Embodiment 2:

[0058] refer to Figure 7-8 A multi-stage buffer device shield includes a buffer mechanism 3; the buffer mechanism 3 includes a limit frame 301, a partition plate 302 and an airbag 303, which are fixedly connected to the front side of the positioning frame 201, the partition plate 302 is fixedly connected to the inner side of the limit frame 301, and two airbags 303 are respectively clamped on both sides of the partition plate 302, the surface of the airbag 303 is clamped with the inner side of the limit frame 301, and the rear side of the airbag 303 is connected with the front side of the flow equalizing pipe 204. By setting the buffer mechanism 3, the limit frame 301 can limit the partition plate 302 and the airbag 303, and the air pressure is transmitted to the airbag 303 through the transmission mechanism 2. The airbag 303 can expand rapidly after inflation, thereby buffering the vehicle, which has the effect of automatically buffering the vehicle.

[0059] like Figure 8 As shown, the top, front side and bottom of the front side of the airbag 303 are fixedly connected with a buffer soft plate 13, and the front side of the buffer soft plate 13 is set to a trapezoid. By setting the buffer soft plate 13, the surface of the airbag 303 can be protected, and the trapezoidal design can better adapt to the shape of the vehicle, thereby facilitating the change of the shape of the airbag 303 to adapt to the shape of the vehicle.

[0060] like Figure 8 As shown, the surface of the airbag 303 is connected to an exhaust pipe 14, and the diameter of the exhaust pipe 14 is smaller than the flow equalizing pipe 204. By setting the exhaust pipe 14, after the airbag 303 is filled with gas and intercepts the vehicle, the internal gas can be gradually discharged through the exhaust pipe 14 to facilitate subsequent rescue operations.

[0061] Brief description of the use process: First, after the airbag 303 is delivered with strong air pressure, it will expand, thereby contacting the vehicle and cushioning the vehicle.

[0062] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A multi-stage buffer device shield, comprising a capture mechanism (1), a transmission mechanism (2) and a buffer mechanism (3), characterized in that: The transmission mechanism (2) is fixedly connected to the inner side of the capture mechanism (1), and the buffer mechanism (3) is fixedly connected to the front side of the inner side of the transmission mechanism (2); The capture mechanism (1) comprises an interception net (101), a transmission rod (102) and a pneumatic cylinder (103), wherein the four transmission rods (102) are respectively fixedly connected to both sides of the top of the rear side of the interception net (101) and both sides of the bottom of the rear side, and the pneumatic cylinder (103) is fixedly connected to the rear side of the transmission rod (102); The transmission mechanism (2) comprises a positioning frame (201), a pressure assembly (202), an air generator (203) and a flow equalizing tube (204); the tops on both sides of the positioning frame (201) and the bottoms on both sides are fixedly connected to the inner side of the pneumatic cylinder (103); the pressure assembly (202) is fixedly connected to the inner side of the positioning frame (201); the air generator (203) is connected to the front side of the pressure assembly (202); and the flow equalizing tube (204) is connected to both sides of the air generator (203); The pressure assembly (202) comprises an air bleed pipe (2021), a central pipe (2022), a locking sleeve (2023) and a trigger bead (2024); the two sides of the top and the two sides of the bottom of the two air bleed pipes (2021) are respectively fixedly connected to the two sides of the bottom of the inner side and the two sides of the top of the inner side of the positioning frame (201); the two sides of the top and the two sides of the bottom of the air bleed pipe (2021) are both connected to the pneumatic cylinder (103); the two central pipes (2022) are respectively connected to the top and the bottom of the inner side of the air bleed pipe (2021); the locking sleeve (2023) is connected to the inner side of the central pipe (2022); the trigger bead (2024) is clamped on the inner side of the locking sleeve (2023); and the front side of the central pipe (2022) is connected to the rear side of the air generator (203); The buffer mechanism (3) comprises a limiting frame (301), a partition plate (302) and an airbag (303), the airbag being fixedly connected to the front side of the positioning frame (201), the partition plate (302) being fixedly connected to the inner side of the limiting frame (301), two airbags (303) being respectively clamped on the two sides of the partition plate (302), the surface of the airbag (303) being clamped to the inner side of the limiting frame (301), and the rear side of the airbag (303) being connected to the front side of the flow equalizing pipe (204).

2. A multi-stage buffer device shield according to claim 1, characterized in that: Buffer balls (4) are fixedly connected to both sides of the top and both sides of the bottom of the intercepting net (101); the rear side of the buffer ball (4) is fixedly connected to the front side of the transmission rod (102); and the surface of the buffer ball (4) is provided with an anti-wear sleeve.

3. The multi-stage buffer device shield according to claim 1, characterized in that: The surface of the interception net (101) is provided with a protective cover (5), and the surface of the protective cover (5) is coated with corrosion-resistant paint.

4. The multi-stage buffer device shield according to claim 1, characterized in that: The top and bottom of the air duct (2021) are both fixedly connected to a reinforcement plate (6), and the side of the reinforcement plate (6) away from the centralizing pipe (2022) is fixedly connected to the inner side of the positioning frame (201).

5. The multi-stage buffer device shield according to claim 1, characterized in that: The inner side of the centralizing pipe (2022) is provided with a pressure-resistant sleeve (7), and the inner side of the pressure-resistant sleeve (7) is coated with a waterproof coating.

6. The multi-stage buffer device shield according to claim 1, characterized in that: The top and bottom of the rear side of the positioning frame (201) are both fixedly connected to a connecting plate (8), and the rear side of the connecting plate (8) is fixedly connected to a mounting frame (9).

7. The multi-stage buffer device shield according to claim 1, characterized in that: The top and bottom of the left side of the positioning frame (201) are both fixedly connected to a connecting sleeve frame (10), and the top and bottom of the right side of the positioning frame (201) are both fixedly connected to a connecting card frame (11).

8. The multi-stage buffer device shield according to claim 1, characterized in that: The bottom of the positioning frame (201) is fixedly connected to a gripping plate (12), and the bottom of the gripping plate (12) is configured to be tooth-shaped.

9. The multi-stage buffer device shield according to claim 1, characterized in that: The top, front side and bottom of the front side of the safety airbag (303) are all fixedly connected with a buffer soft plate (13), and the front side of the buffer soft plate (13) is set in a trapezoidal shape.

10. The multi-stage buffer device shield according to claim 1, characterized in that: The surface of the safety airbag (303) is connected to an exhaust pipe (14), and the diameter of the exhaust pipe (14) is smaller than that of the flow equalizing pipe (204).

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