阅读说明：本技术 一种用于高速公路上的摩擦吸能防撞装置 (Friction energy-absorbing anti-collision device for expressway ) 是由 杨大伟 梁明坤 何建丁 于 2021-08-10 设计创作，主要内容包括：本发明公开了一种用于高速公路上的摩擦吸能防撞装置,包括固定台,所述固定台上安装有摩擦吸能机构,所述摩擦吸能机构包括三个方形套筒,所述摩擦吸能机构一侧设有转动防护机构,所述转动防护机构包括两个转动轴,所述三个方形套筒中的一个方形套筒安装在固定台前侧,所述三个方形套筒中的另外两个方形套筒安装在转动轴上。本发明的有益效果是,在此装置从正面受到碰撞时,可通过齿轮的传动,将两个侧面的防撞部件转动到中间位置,可增大吸能的力度,可以更好的保护车辆上的人员安全。(The invention discloses a friction energy-absorbing anti-collision device for a highway, which comprises a fixed table, wherein a friction energy-absorbing mechanism is arranged on the fixed table and comprises three square sleeves, a rotation protection mechanism is arranged on one side of the friction energy-absorbing mechanism and comprises two rotation shafts, one square sleeve of the three square sleeves is arranged on the front side of the fixed table, and the other two square sleeves of the three square sleeves are arranged on the rotation shafts. The energy-absorbing device has the beneficial effects that when the device is collided from the front, the anti-collision parts on the two side surfaces can be rotated to the middle position through the transmission of the gear, so that the energy-absorbing force can be increased, and the safety of personnel on a vehicle can be better protected.)

1. A friction energy-absorbing anti-collision device for an expressway comprises a fixed platform (1) and is characterized in that a friction energy-absorbing mechanism is mounted on the fixed platform (1) and comprises three square sleeves (2), a rotation protection mechanism is arranged on one side of the friction energy-absorbing mechanism and comprises two rotation shafts (3), one square sleeve (2) of the three square sleeves (2) is mounted on the front side of the fixed platform (1), the other two square sleeves (2) of the three square sleeves (2) are mounted on the rotation shafts (3),

the friction energy absorption mechanism comprises a telescopic frame (4) positioned in a square sleeve (2), first friction plates (5) are arranged on the upper surface and the lower surface of the telescopic frame (4), the rear side surface of the telescopic frame (4) is connected with the inner side surface of the square sleeve (2) through a plurality of first reset springs (6), limiting cylinders (7) are arranged on the two sides of the upper end and the lower end of the rear side surface of the telescopic frame (4), limiting rods (8) are arranged in the limiting cylinders (7), a plurality of inlet and outlet openings (9) are formed in the upper end and the lower end of the square sleeve (2), one end of each limiting rod (8) penetrates through the inlet and outlet openings (9) and stretches to the outer side of the square sleeve (2), a circular baffle (10) is arranged at one end of each limiting rod (8), the lifting plate (12) is arranged at one end of each circular baffle (10) and is connected with the surface of one side of the square sleeve (2) through a plurality of second reset springs (11), a first pulley (13) is arranged on the surface of one side of the lifting plate (12), first friction plate (5) one side is equipped with second friction plate (14), second friction plate (14) one side is equipped with connecting rod (15), open about square sleeve (2) has business turn over hole (16), connecting rod (15) one end is passed business turn over hole (16) and is stretched square sleeve (2) outside, connecting plate (17) are installed to connecting rod (15) one end, connecting plate (17) one side surface is connected with square sleeve (2) one side surface through a plurality of third reset spring (18), second pulley (19) are installed to connecting plate (17) other side surface, telescopic frame (4) front side surface is installed first energy-absorbing board (20), first energy-absorbing board (20) front side is equipped with second energy-absorbing board (21), second energy-absorbing board (21) and first energy-absorbing board (20) are connected through a plurality of fourth reset spring (22), moving platform (23) are installed to the lower extreme on second energy-absorbing board (21) inboard surface.

2. The friction energy-absorbing anti-collision device for the expressway according to claim 1, wherein the rotation protection mechanism comprises a circular through hole (24) on the fixed platform (1), rolling bearings (25) are installed at the upper end and the lower end of the circular through hole (24), one end of the rotating shaft (3) is installed in the rolling bearings (25), a transmission gear (26) is installed at one end of the rotating shaft (3), a square through hole (27) is formed in the fixed platform (1), pushing platforms (28) are arranged on two sides in the square through hole (27), a fixed rack (29) is installed on one side surface of each pushing platform (28), a support rod (30) is arranged on one side of each pushing platform (28), one end of each support rod (30) is connected with one side surface of each pushing platform (28), a connecting hole (31) is formed on one side of each square sleeve (2) installed on the fixed platform (1), one end of each support rod (30) penetrates through the connecting hole (31) to be fixedly connected with a telescopic frame (4), a limiting gear (32) is installed on one side of the rotating shaft (3), a limiting rack (33) is arranged on one side of the limiting gear (32), a spring thimble (34) is installed on the surface of one side of the limiting rack (33), one end of the spring thimble (34) is fixedly installed on one side of the square through hole (27), and a blocking rod (35) is installed on one side of the telescopic end of the spring thimble (34).

3. The friction energy-absorbing anti-collision device for the expressway of claim 1, wherein the upper and lower surfaces of the moving platform (23) are provided with inclined surfaces.

4. The friction energy-absorbing anti-collision device for the expressway of claim 1, wherein the moving platform (23) is provided with a guide hole (36) at one side, a guide rod (37) is arranged in the guide hole (36), one end of the guide rod (37) is provided with a fixing rod (38), and the lower end of the fixing rod (38) is fixedly arranged on the upper surface of the square sleeve (2).

5. The friction energy-absorbing anti-collision device for the expressway according to claim 1, wherein the square sleeve (4) is provided with guide slideways (39) at the upper and lower ends of the two side surfaces, the telescopic frame (4) is provided with guide plates (40) at the upper and lower ends of the two side surfaces, and one end of each guide plate (40) is positioned in each guide slideway (39).

6. The friction energy-absorbing anti-collision device for the expressway of claim 1, wherein the lower end of the limit rod (8) is provided with a universal ball (41), and the lower end of the universal ball (41) is positioned in the limit cylinder (7).

7. The friction energy-absorbing anti-collision device for the expressway of claim 1, wherein the square sleeve (4) is internally provided with a plurality of intercepting plates (42) on the upper and lower surfaces, and the intercepting plates (42) are positioned on one side of the limiting cylinder (7).

8. A friction energy-absorbing impact protection device for motorways according to claim 1, characterized in that the cross-sectional shape of the second energy-absorbing plate (21) is arc-shaped.

Technical Field

The invention relates to the technical field of highway anti-collision equipment, in particular to a friction energy-absorbing anti-collision device for a highway.

Background

At present, domestic highway does not generally do the processing or only places the warning bucket at the guardrail tip of export trigone reposition of redundant personnel department, accident vehicle striking back, vehicle and passenger can suffer serious injury, data display, it only accounts for 6% to lead to the casualties accident in the collision guardrail accident, and the accident that causes accounts for the majority of casualties accident because the guardrail tip is not handled properly, it is therefore visible, rational processing guardrail tip has the significance to reduce accident severity, the crash pad product is mostly destructive energy-absorbing structure on the market, energy-absorbing stability is poor, reuse rate is low.

Disclosure of Invention

Aiming at the defects, the invention provides a friction energy-absorbing anti-collision device for an expressway to solve the problem.

In order to achieve the purpose, the invention adopts the following technical scheme:

a friction energy-absorbing anti-collision device for an expressway comprises a fixed table, wherein a friction energy-absorbing mechanism is arranged on the fixed table and comprises three square sleeves, a rotation protection mechanism is arranged on one side of the friction energy-absorbing mechanism and comprises two rotation shafts, one square sleeve of the three square sleeves is arranged on the front side of the fixed table, the other two square sleeves of the three square sleeves are arranged on the rotation shafts,

the friction energy absorption mechanism comprises a telescopic frame positioned in a square sleeve, first friction plates are arranged on the upper surface and the lower surface of the telescopic frame, the rear side surface of the telescopic frame is connected with the inner side surface of the square sleeve through a plurality of first reset springs, limiting cylinders are arranged on the upper side and the lower side of the rear side surface of the telescopic frame, limiting rods are arranged in the limiting cylinders, a plurality of inlets and outlets are formed in the upper end and the lower end of the square sleeve, one end of each limiting rod penetrates through the inlet and outlet and extends to the outer side of the square sleeve, a circular baffle is arranged at one end of each limiting rod, the circular baffle is connected with the surface of one side of the square sleeve through a plurality of second reset springs, a lifting plate is arranged at one end of each limiting rod, a first pulley is arranged on the surface of one side of the lifting plate, a second friction plate is arranged on one side of the second friction plate, a connecting rod is arranged on the upper end and the lower end of the square sleeve, and one end of the connecting rod penetrates through the inlet and outlet and extends to the outer side of the square sleeve, the connecting plate is installed to connecting rod one end, and connecting plate one side surface is connected through a plurality of third reset spring and square sleeve one side surface, and the second pulley is installed to connecting plate opposite side surface, and telescopic frame installs first energy-absorbing plate in the front side surface, and first energy-absorbing plate front side is equipped with the second energy-absorbing plate, and second energy-absorbing plate and first energy-absorbing plate are connected through a plurality of fourth reset spring, and the mobile station is installed to the inboard upper and lower end of second energy-absorbing plate.

Further, the rotation protection mechanism is including being located the circular through-hole on the fixed station, antifriction bearing is installed to the lower extreme about the circular through-hole, axis of rotation one end is installed in antifriction bearing, drive gear is installed to axis of rotation one end, it has square through-hole to open on the fixed station, both sides are equipped with the promotion platform in the square through-hole, promote platform one side and install the fixed rack on the surface, promote platform one side and install the bracing piece, it has the connecting hole to open square sleeve one side of installing on the fixed station, bracing piece one end passes connecting hole and a telescoping frame fixed connection, axis of rotation one side is installed limit gear, limit gear one side is equipped with spacing rack, spacing rack one side surface mounting has the spring thimble, spring thimble one end fixed mounting is in square through-hole one side, the flexible end one side of spring thimble is installed and is blocked the pole.

Furthermore, the upper surface and the lower surface of the mobile station are provided with inclined surfaces.

Furthermore, a guide hole is formed in one side of the mobile station, a guide rod is arranged in the guide hole, a fixing rod is installed at one end of the guide rod, and the lower end of the fixing rod is fixedly installed on the upper surface of the square sleeve.

Furthermore, the upper end and the lower end of the surface of the two sides in the square sleeve are provided with guide slideways, the upper end and the lower end of the surface of the two sides of the telescopic frame are provided with guide plates, and one end of each guide plate is positioned in each guide slideway.

Furthermore, universal ball is installed to gag lever post lower extreme one side, and universal ball lower extreme is located a spacing section of thick bamboo.

Furthermore, a plurality of intercepting plates are arranged on the upper surface and the lower surface in the square sleeve, and the intercepting plates are located on one side of the limiting cylinder.

Further, the cross section of the second energy-absorbing plate is arc-shaped.

The invention has the beneficial effects that: the device mainly adopts a friction energy absorption mode to reduce the impact force, does not adopt a destructive energy absorption structure, and can be repeatedly utilized for many times, when the device is impacted in the front, the two friction plates can be firstly close to each other, the friction force between the friction plates can be increased, the buffering and the shock absorption of the impacted vehicle are convenient, after the automobile is impacted and driven away, under the action of the spring, the two friction plates can be separated, the friction force can be reduced, the device is convenient to reset through the reset spring, when the side surface of the device is impacted, the shock absorption effect can be realized, the device can be prevented from being damaged by being impacted in the side surface, when the device is impacted in the front surface, the transmission of the gear can be realized, the anti-collision parts on the two side surfaces are rotated to the middle position for absorbing the energy, the force can be increased, and the safety of personnel on the vehicle can be better protected.

Drawings

FIG. 1 is a schematic structural diagram of a friction energy absorption anti-collision device for a highway, which is disclosed by the invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

FIG. 4 is a schematic view, partially in section, of the rotation prevention mechanism of the present invention;

FIG. 5 is a schematic view of the connection between the limiting cylinder and the limiting rod according to the present invention;

FIG. 6 is a schematic top view of an energy absorbing friction impact device for a highway according to the present invention;

FIG. 7 is a side view schematic cross-sectional view of an energy absorbing friction impact absorption apparatus for a highway according to the present invention;

FIG. 8 is an enlarged view of a portion of FIG. 7 at C;

FIG. 9 is a schematic view showing the connection between the pushing stage and the intercepting bar according to the present invention;

in the figure, 1, a fixed table; 2. a square sleeve; 3. a rotating shaft; 4. a telescoping frame; 5. a first friction plate; 6. a first return spring; 7. a limiting cylinder; 8. a limiting rod; 9. an inlet and an outlet; 10. a circular baffle; 11. a second return spring; 12. a lifting plate; 13. a first pulley; 14. a second friction plate; 15. a connecting rod; 16. an inlet and outlet hole; 17. a connecting plate; 18. a third return spring; 19. a second pulley; 20. a first energy absorbing plate; 21. a second energy absorbing panel; 22. a fourth return spring; 23. a mobile station; 24. a circular through hole; 25. a rolling bearing; 26. a transmission gear; 27. a square through hole; 28. a pushing table; 29. fixing a rack; 30. a support bar; 31. connecting holes; 32. a limit gear; 33. a limit rack; 34. a spring thimble; 35. a catch bar; 36. a guide hole; 37. a guide bar; 38. fixing the rod; 39. a guide slide way; 40. a guide plate; 41. a ball transfer unit; 42. a interception plate.

Detailed Description

The invention is described in detail below with reference to the accompanying drawings, as shown in FIGS. 1-9: a friction energy-absorbing anti-collision device used on an expressway comprises a fixed platform 1, wherein a friction energy-absorbing mechanism is arranged on the fixed platform 1 and comprises three square sleeves 2, a rotation protection mechanism is arranged on one side of the friction energy-absorbing mechanism and comprises two rotation shafts 3, one square sleeve 2 of the three square sleeves 2 is arranged on the front side of the fixed platform 1, the other two square sleeves 2 of the three square sleeves 2 are arranged on the rotation shafts 3,

the friction energy absorption mechanism comprises a telescopic frame 4 positioned in a square sleeve 2, first friction plates 5 are arranged on the upper surface and the lower surface of the telescopic frame 4, the rear side surface of the telescopic frame 4 is connected with the inner side surface of the square sleeve 2 through a plurality of first reset springs 6, limiting cylinders 7 are arranged on the two sides of the upper end and the lower end of the rear side surface of the telescopic frame 4, limiting rods 8 are arranged in the limiting cylinders 7, a plurality of inlets and outlets 9 are formed in the upper end and the lower end of the square sleeve 2, one end of each limiting rod 8 penetrates through the inlets and outlets 9 and extends to the outer side of the square sleeve 2, a circular baffle 10 is arranged at one end of each limiting rod 8, the circular baffle 10 is connected with the surface of one side of the square sleeve 2 through a plurality of second reset springs 11, a lifting plate 12 is arranged at one end of each limiting rod 8, a first pulley 13 is arranged on the surface of one side of the lifting plate 12, a second friction plate 14 is arranged on one side of the first friction plate 5, a connecting rod 15 is arranged on one side of the upper end of the square sleeve 2, and an inlet and outlet 16 are formed on the lower end of the square sleeve 2, one end of a connecting rod 15 passes through an access hole 16 and extends to the outer side of the square sleeve 2, one end of the connecting rod 15 is provided with a connecting plate 17, one side surface of the connecting plate 17 is connected with one side surface of the square sleeve 2 through a plurality of third return springs 18, the other side surface of the connecting plate 17 is provided with a second pulley 19, the front side surface of the telescopic frame 4 is provided with a first energy-absorbing plate 20, the front side of the first energy-absorbing plate 20 is provided with a second energy-absorbing plate 21, the second energy-absorbing plate 21 and the first energy-absorbing plate 20 are connected through a plurality of fourth return springs 22, the upper end and the lower end of the inner side surface of the second energy-absorbing plate 21 are provided with a movable platform 23, when the second energy-absorbing plate 21 is impacted, the first energy-absorbing plate 20 is intercepted by the limiting rod 8 and can not move, the second energy-absorbing plate 21 can drive the movable platform 23 to move, and further can pull the limiting rod 8 upwards to push the connecting rod 15 downwards, so that the second friction plate 14 can be contacted with the first friction plate 5, the friction force between the two friction plates is increased, so that energy can be absorbed, after the impact is finished, the second energy absorption plate 21 returns to the original position under the action of the spring, the connecting rod 15 can move upwards, the second friction plate 14 and the first friction plate 6 are separated, and the telescopic frame 4 returns to the original position under the action of the spring.

The rotary protection mechanism comprises a circular through hole 24 positioned on a fixed platform 1, rolling bearings 25 are arranged at the upper end and the lower end of the circular through hole 24, one end of a rotating shaft 3 is arranged in the rolling bearing 25, a transmission gear 26 is arranged at one end of the rotating shaft 3, a square through hole 27 is formed in the fixed platform 1, pushing platforms 28 are arranged at two sides in the square through hole 27, a fixed rack 29 is arranged at the upper end and the lower end of the surface of one side of each pushing platform 28, a supporting rod 30 is arranged at one side of each pushing platform 28, a connecting hole 31 is formed in one side of a square sleeve 2 arranged on the fixed platform 1, one end of each supporting rod 30 is fixedly connected with a telescopic frame 4 through the corresponding connecting hole 31, a limiting gear 32 is arranged at one side of the rotating shaft 3, a limiting rack 33 is arranged at one side of each limiting gear 32, a spring thimble 34 is arranged at one side of the square through hole 27, and a blocking rod 35 is arranged at one side of the telescopic end of each spring thimble 34, the rotating shaft 3 can be driven to rotate through the transmission of the gear, and then the energy absorption mechanisms at the other two positions can be rotated to the middle, so that the energy absorption force can be increased.

The upper and lower surfaces of the mobile station 23 are provided with inclined surfaces, which is convenient for pushing the limit rod 8 and the connecting rod 15.

One side of the mobile station 23 is provided with a guide hole 36, a guide rod 37 is arranged in the guide hole 36, one end of the guide rod 37 is provided with a fixing rod 38, and the lower end of the fixing rod 38 is fixedly arranged on the upper surface of the square sleeve 2, so that the moving direction of the mobile station 23 can be ensured.

The upper end and the lower end of the surface of two sides in the square sleeve 2 are provided with guide slideways 39, the upper end and the lower end of the surface of two sides of the telescopic frame 4 are provided with guide plates 40, and one end of each guide plate 40 is positioned in each guide slideway 39, so that the moving direction of the telescopic frame 4 can be ensured.

Universal ball 41 is installed to gag lever post 8 lower extreme one side, and universal ball 41 lower extreme is located spacing section of thick bamboo 7, can reduce the frictional force when gag lever post 8 removes.

A plurality of interception plates 42 are arranged on the upper surface and the lower surface in the square sleeve 2, and the interception plates 42 are positioned on one side of the limiting cylinder 7 and can prevent the telescopic frame 4 from moving out of the square sleeve 2.

The cross section of the second energy-absorbing plate 21 is arc-shaped, so that the protection area can be increased.

In the embodiment, the fixed platform 1 of the device is arranged at the front end of the end part of the guardrail at high speed, the volume of the square sleeve 2 and the telescopic frame 4 at the middle position is larger than that of the square sleeve 2 and the telescopic frame 4 above and below the fixed platform, under the normal state, the three square sleeves 2 respectively point to different directions, the telescopic frame 4 is positioned at the front end in the square sleeve 2 under the elastic force action of the first return spring 6, the interception plate 42 can block the limiting cylinder 7 and can prevent the telescopic frame 4 from moving out of the square sleeve 2, the second energy absorption plate 21 and the first energy absorption plate 20 are connected through the fourth return spring 22 and positioned at the front side of the telescopic frame 4, the fourth return spring 22 is in a compressed state and can push the second energy absorption plate 21 forwards, the second energy absorption plate 21 is connected with the movable platform 23, the circular baffle 10 can block the lower end of the movable platform 23, the lower end of the limiting rod 8 is positioned in the limiting cylinder 7, the second friction plate 14 and the first friction plate 5 are in a separated state,

when the automobile runs on a highway and the front side collides with the second energy-absorbing plate 21 at the middle position, the second energy-absorbing plate 21 moves to the rear side, the first energy-absorbing plate 20 is installed on the telescopic frame 4, the telescopic frame 4 is blocked by the limiting rod 8 and can not move, and further, when the second energy-absorbing plate 21 moves to the rear side, the fourth return spring 22 is compressed, when the second energy-absorbing plate 21 moves to the rear side, the mobile platform 23 can be driven to move to the rear side, the guide rod 37 and the guide hole 36 can ensure the moving direction of the mobile platform 23, when the mobile platform 23 moves to the rear side, the inclined surface at the upper end of the mobile platform 23 can push the first pulley 13 upwards, the first pulley 13 can drive the lifting plate 12, the limiting rod 8 and the circular baffle 10 to move upwards, and stretch the second return spring 11, the first pulley 13 can reduce the friction force when the mobile platform 23 moves, the universal ball 41 can reduce the friction force between the limiting rod 8 and the limiting cylinder 7 when the limiting rod 8 moves upwards, further, the lower end of the stopper rod 8 is moved out of the stopper cylinder 7, and at the same time, the inclined surface of the lower end of the movable stage 23 pushes the second pulley 19 downward, the second pulley 19 reduces the frictional force when the movable stage 23 moves, and when the second pulley 19 moves downward, the second friction plate 14 is pushed downward, so that the second friction plate 14 contacts with the first friction plate 5 to generate a large frictional force, and the third return spring 18 is compressed, and at this time, the rear side of the telescopic frame 4 is not blocked, so that the telescopic frame 4 can move rearward, the guide plate 40 and the guide slide way 39 can secure the moving direction of the telescopic frame 4, and the first return spring 6 is compressed, thereby absorbing the impact of the automobile by the frictional force between the first friction plate 14 and the second friction plate 5,

when the telescopic frame 4 at the middle position moves towards the rear side, the two pushing platforms 28 can move towards the rear side through the supporting rod 30, when the pushing platforms 28 move, the inclined surface at one side of the pushing platforms 28 can push the blocking rod 35 towards one side and compress the spring thimble 34, so that the limiting rack 33 can be pulled towards one side, the limiting rack 33 can be disconnected with the limiting gear 32, the rotating shaft 3 can not be limited, meanwhile, the pushing platforms 28 can drive the fixed rack 29 to move, the fixed rack 29 is meshed with the transmission gear 26 and can drive the transmission gear 26 to rotate, when the transmission gear 26 rotates, the rotating shaft 3 and the square sleeve 2 can be driven to rotate, the square sleeve 2 at the upper part and the lower part can be rotated towards the middle position, when the fixed rack 29 passes through one side of the transmission gear 26, the pushing platforms 28 also move away from one side of the blocking rod 35, the spring thimble 34 can push the limiting rack 33 towards the direction of the limiting gear 32, the two are engaged with each other to limit the rotating shaft 3, at the moment, all the square sleeves 2 are positioned on the same straight line and can increase the buffering force, after the collision is finished and the automobile moves away, a larger friction force exists between the first friction plate 5 and the second friction plate 14, the telescopic frame 4 cannot move, at the moment, the second energy-absorbing plate 21 moves outwards under the elastic force of the fourth return spring 22, the second energy-absorbing plate 21 can drive the moving platform 23 to move, when the moving platform 23 moves to one side of the circular baffle plate 10, the moving platform 23 and the second energy-absorbing plate 21 do not move any more, at the moment, the inclined surface on the moving platform 23 moves to one sides of the first pulley 13 and the second pulley 19, under the elastic force of the third return spring 18, the connecting plate 17, the connecting rod 15 and the second friction plate 14 can move to the direction far away from the first friction plate 5, at the moment, no friction force exists between the first friction plate 5 and the second friction plate 14, under the elastic force of the first return spring 6, the telescopic frame 4 can be pushed outwards, when the limiting cylinder 7 moves to one side of the interception plate 42, the telescopic frame 4 stops moving, at the moment, the limiting cylinder 7 moves to the lower part of the limiting rod 8, under the tensile force of the second return spring 11, the lower end of the limiting rod 8 can be pushed into the limiting cylinder 7 for limiting, and the elastic force of the first return spring 6 is larger than that of the fourth return spring 22, when the telescopic frame 4 returns to the original position, the fourth return spring 22 can be in a compressed state,

when the telescopic frame 4 returns to the original position, the telescopic frame 4 can pull the pushing platform 28 reversely through the supporting rod 30, and further the spring thimble 34 can be pushed to one side through the inclined surface action of the pushing platform 28, so that the limit rack 33 is disconnected with the limit gear 32, and then the rotating shaft 3 can be rotated back to the original position through the meshing of the fixed rack 29 and the transmission gear 26, thereby resetting the device,

when the automobile impacts the device from the side, the second energy-absorbing plate 21 on the side can be impacted, the second friction plate 14 at the corresponding position can be firstly attached to the first friction plate 5 through the principle, the friction force is increased, the energy absorption and the shock absorption are carried out through the movement of the telescopic frame 4, and after the impact is finished, the second friction plate can be reset through the action of the spring.

The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.