CN111455845B

CN111455845B - Bridge guardrail capable of changing vehicle impact direction

Info

Publication number: CN111455845B
Application number: CN202010366118.1A
Authority: CN
Inventors: 门付安
Original assignee: Hebei Huajiu Metal Products Co ltd
Current assignee: HEBEI HUAJIU METAL PRODUCTS Co.,Ltd.
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-06-08
Anticipated expiration: 2040-04-30
Also published as: CN111455845A

Abstract

The invention relates to a bridge guardrail for changing a vehicle impact direction, which aims to solve the problems that the existing guardrail cannot buffer, cannot perform vehicle intervention and easily causes secondary injury of personnel and avoid larger safety accidents caused by the fact that a vehicle rushes out of a bridge floor; a pushing sliding block which slides vertically is arranged on the vertical rod, the pushing sliding block is hinged with the sliding block in a universal way through a connecting rod, and the connecting rod is obliquely arranged towards the outer side direction of the cross beam; the device also comprises a gravity beam arranged above the cross beam, wherein a plurality of vertical ejector rods arranged below the gravity beam are arranged on the gravity beam, and the lower ends of the vertical ejector rods downwards slide to penetrate through the cross beam and contact with the pushing sliding block.

Description

Bridge guardrail capable of changing vehicle impact direction

Technical Field

The invention relates to a bridge safety protection device, in particular to a bridge guardrail for changing the collision direction of vehicles.

Background

The existing bridge mainly depends on the guardrails to protect the vehicle, but the impact inertia is large when the vehicle is impacted, the vehicle often rolls over and falls off the bridge after impacting the guardrails, or the guardrail is impacted to break off and fall off the bridge floor, or the guardrail is impacted and bent and falls off the bridge floor along the bent guardrails, and under-bridge personnel are inevitably fallen off after the vehicle leaves the bridge floor under any condition, so that serious subsequent injuries are brought to the personnel on the vehicle.

Meanwhile, because the existing guardrails are rigidly connected with the bridge, when a vehicle is impacted, the guardrails can change the speed of the vehicle instantly, and people on the vehicle can rapidly rush forward under the action of inertia, so that the vehicle control is difficult to implement, the body cannot make self-protection reaction, and the people on the vehicle can only passively rely on safety devices such as an air bag and the like, and often can suffer from secondary injuries of different degrees, such as cervical vertebra dislocation, local part fracture, suffocation caused by the head sinking into the air bag and the like.

Therefore, in the aspect of safety protection of the bridge guardrail, the guardrail has a certain function of vehicle movement intervention, so that the impact force of the vehicle to the side face of the bridge is reduced or avoided as much as possible, and the vehicle is prevented from rushing out of the guardrail; meanwhile, the time for the vehicle to passively decelerate after the collision is prolonged, and more reaction time is provided for personnel on the vehicle to implement vehicle control and self-protection.

Disclosure of Invention

Aiming at the situation, in order to make up for the technical defects in the prior art, the invention provides the bridge guardrail for changing the vehicle impact direction, so as to solve the problems that the conventional bridge guardrail cannot buffer the vehicle impact, cannot actively interfere the vehicle motion and easily causes secondary damage to personnel on the vehicle at the moment of impact, and avoid the vehicle from rushing out of the bridge floor to cause larger safety accidents.

The technical scheme for solving the problem is as follows: the anti-collision device comprises a base body fixed on a bridge, a cross beam arranged above the base body and a plurality of vertical rods arranged below the cross beam and used for supporting the cross beam, wherein the vertical rods are uniformly distributed along the length direction of the cross beam, the base body is provided with an arc-shaped chute with an upward opening facing the inner side direction of the bridge, a sliding block is arranged in the arc-shaped chute, the sliding block is provided with an anti-collision rod vertically arranged above the sliding block, the cross beam is provided with an arc-shaped guide groove matched with the upper end of the anti-collision rod, the arc-shaped chute and the arc-shaped guide groove vertically correspond to each other and have the same radian, the upper end of the anti-collision rod is slidably arranged in the arc-shaped guide groove, and the anti-; the vertical rod is provided with a pushing sliding block which vertically slides on the vertical rod, the pushing sliding block is hinged with the sliding block in a universal mode through a connecting rod, the connecting rod is obliquely arranged towards the outer side of the cross beam, namely the outer side direction of the bridge, and when the anti-collision rod slides along an arc-shaped track due to impact, the sliding block slides along with the connecting rod and pushes the pushing sliding block to slide upwards through the connecting rod; the gravity beam is arranged above the cross beam and is arranged in the same direction as the cross beam, the gravity beam is provided with vertical ejector rods which are arranged below the gravity beam and are in one-to-one correspondence with the pushing sliders, the upper ends of the vertical ejector rods are connected with the gravity beam, the lower ends of the vertical ejector rods downwards slide to penetrate through the cross beam and contact with the upper end faces of the pushing sliders, when any pushing slider upwards slides, the gravity beam integrally moves upwards, impact force is buffered and offset by utilizing the gravity of the gravity beam, and the whole weight of the gravity acts on the pushing slider after the upward movement due to the upward movement of any pushing slider, so that the effective resistance to the impact force can be effectively ensured, and the protection failure caused by insufficient resistance is avoided; when the anti-collision rod crosses the closest point on the arc track and outside the bridge, the gravity beam falls and resets to form a reverse thrust action on the pushing sliding block, the downward sliding of the pushing sliding block is accelerated, the anti-collision rod continuously slides to drive the head or the collision part of the vehicle to be forcibly changed in the motion direction, and at the moment, the tail of the vehicle generates drift under the action of self inertia to throw towards the guardrail, so that the side face of the vehicle collides with the guardrail.

The invention can not only buffer, consume and decompose the impact force of the vehicle, but also interfere the vehicle operation to forcibly change the motion direction of the vehicle, finally make the side surface of the vehicle collide with the guardrail, prevent the vehicle from rushing out of the bridge floor, and effectively protect the safety of the vehicle and the safety of the guardrail; meanwhile, the range sliding of the anti-collision rod can prolong the passive deceleration time of the vehicle, slow down the inertial movement of the body of the vehicle personnel, bring more reaction time to the vehicle personnel to implement self-protection and vehicle control, and reduce the secondary damage of the vehicle collision to the vehicle personnel as much as possible; in addition, the range activity of the crash bar can also enable the crash bar to have certain avoidance and buffer space when being impacted by a vehicle, so that the crash bar is prevented from being damaged by bearing all impact force of the vehicle at one time, the crash bar is effectively prevented from being bent or broken, and the integrity of the guardrail is ensured.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is an isometric view of the present invention.

Fig. 3 is a perspective view of the present invention.

Fig. 4 is an enlarged view of a portion a of fig. 1 according to the present invention.

Fig. 5 is a sectional view taken along line B-B of fig. 4 according to the present invention.

Fig. 6 is a cross-sectional view taken along line C-C of fig. 5 in accordance with the present invention.

Fig. 7 is a schematic perspective view of a portion a in fig. 1 according to the present invention.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 7, the anti-collision device comprises a base body 1 fixed on a bridge 19, a cross beam 2 arranged above the base body 1, and a plurality of vertical rods 3 arranged below the cross beam 2 and used for supporting the cross beam 2, wherein the vertical rods 3 are uniformly distributed along the length direction of the cross beam 2, the base body 1 is provided with an arc-shaped chute 4 with an upward opening facing the inner side direction of the bridge 19, a sliding block 5 is arranged in the arc-shaped chute 4, the sliding block 5 is provided with an anti-collision rod 6 vertically arranged above the sliding block 5, the cross beam 2 is provided with an arc-shaped guide groove 7 matched with the upper end of the anti-collision rod 6, the arc-shaped chute 4 corresponds to the arc-shaped guide groove 7 from top to bottom, the radian of the arc-shaped chute 4 is consistent with that of the arc-shaped guide groove 7, and the anti-collision rod 6 is kept in the vertical direction; montant 3 on have on montant 3 vertical gliding top to push away slider 8, top push away between slider 8 and the slider 5 through the universal articulated of connecting rod 9: namely, two ends of the connecting rod 9 are respectively and universally hinged with the pushing sliding block 8 and the sliding block 5, when the anti-collision device is used, the sliding block 5 is arranged at one end of the arc-shaped sliding groove 4 facing to the coming direction, the connecting rod 9 is obliquely arranged towards the outer side of the cross beam 2, namely the outer side direction of the bridge 19, and when the anti-collision rod 6 is impacted and slides along the arc-shaped track, the sliding block 5 slides along with the anti-collision rod and pushes the pushing sliding block 8 to slide upwards through the connecting rod 9; the device also comprises a gravity beam 10 which is arranged above the cross beam 2 and is arranged in the same direction as the cross beam 1, wherein vertical ejector rods 11 which are arranged below the gravity beam and correspond to the pushing sliders 8 one by one are arranged on the gravity beam 10, the upper ends of the vertical ejector rods 11 are connected with the gravity beam 10, the lower ends of the vertical ejector rods 11 downwards slide to penetrate through the cross beam 2 and contact with the upper end faces of the pushing sliders 8, when any pushing slider 8 upwards slides, the vertical ejector rods 11 are pushed by the pushing sliders 8 to upwards move, the gravity beam 10 integrally moves upwards, impact force is buffered and counteracted by the gravity of the gravity beam 10, and the upwards movement of any pushing slider 8 can cause the integral weight of the gravity 10 to act on the upwards-moved pushing slider 8, so that the effective resistance to the impact force can be effectively ensured, and the failure of protection caused by insufficient resistance can be avoided; when the crash bar 6 crosses the closest point on the arc track and outside the bridge 19, the crash bar 6 still receives the inertia impact of the vehicle and continues to slide, at the moment, the slide block 5 pulls the pushing slide block 8 to slide downwards through the connecting rod 9, the gravity beam 10 immediately falls to reset, the falling of the gravity beam 10 can form a reverse pushing action on the pushing slide block 8, the sliding of the pushing slide block 8 is accelerated, the continuous sliding of the crash bar 6 is reliably assisted, the head or the impact part of the vehicle is driven to be forcibly changed in the moving direction, at the moment, the tail of the vehicle drifts under the self inertia action to swing towards the guardrail direction, the side surface of the vehicle collides with the guardrail, the rolling over and falling of the vehicle can be effectively prevented, and the driver and passengers can be prevented from being thrown out of the front window of the vehicle, falling into an air bag to cause suffocation or the head to be seriously injured by.

Preferably, the pushing slide block 8 is provided with a positioning hole 12 corresponding to the vertical ejector rod 11 in a matching manner, the vertical ejector rod 11 can vertically slide in the positioning hole 12, a bolt 13 screwed in from bottom to top is arranged in the positioning hole 12, and the lower end of the vertical ejector rod 11 is contacted with the upper end of the bolt 13; the height of the gravity beam 10 can be adjusted by adjusting the screwing-in depth of the bolt 13, and after the collision happens, the anti-collision rod 6 slides to the other end of the arc-shaped sliding groove 4, the bolt 13 is only required to be taken out, the corresponding pushing sliding block 8 does not bear the weight of the gravity beam 10, and the anti-collision rod 6 can be easily reset.

Preferably, at least two vertical push rods 11 corresponding to any one pushing slide block 8 are uniformly distributed along the circumference of the axis of the vertical rod 3; the at least two vertical push rods 11 which are uniformly distributed enable the stress on the periphery of the pushing sliding block 8 to be balanced, the influence on the normal sliding of the anti-collision rod 6 due to the fact that the sliding is blocked due to the stress on one side is prevented, and the influence on subsequent use due to the fact that the rear connecting rod 9 of the anti-collision rod 6 is bent or broken due to the fact that the stress is too large is avoided.

Preferably, the upper end of the vertical rod 3 is connected with the cross beam 2, and the lower end of the vertical rod 3 is connected with the base body 1, so that the vertical rod 3 supports the cross beam 2.

Preferably, the upper end of the vertical rod 3 is connected with the cross beam 2, and the lower end of the vertical rod 3 is fixed on the bridge 19, so that the vertical rod 3 supports the cross beam 2.

Preferably, the invention also comprises a cross bar 14 which is arranged below the cross beam 2 and has the same direction with the cross beam 2 and a plurality of pillars 15 which are arranged below the cross bar 14 and are used for supporting the cross bar 14, the upper ends of the pillars 15 are connected with the cross bar 14, the lower ends of the pillars 15 are connected with the base body 1 or the bridge 19, the pillars 15 are uniformly distributed along the length direction of the cross bar 14, and the pillars 15 and the vertical bars 3 are arranged at intervals; the upper end of the vertical rod 3 is connected with the cross beam 2, and the lower end of the vertical rod 3 is connected with the cross rod 14; certain elastic buffering can be realized through the transition support of horizontal pole 14, makes montant 3 and pillar 15 constitute the elastic support subassembly, when avoiding great striking power down crossbeam 2 can't avoid producing to rock, the fracture of being connected the position between montant 3 and the crossbeam 2 increases crossbeam 2 and montant 3's connection reliability.

Preferably, the upper end of the crash bar 6 is provided with a roller 16 which is coaxially and rotatably connected with the crash bar 6, and the roller 16 is slidably arranged in the arc-shaped guide groove 7; the rolling of the roller 16 in the arc-shaped guide groove 7 is used for replacing the sliding friction between the anti-collision rod 6 and the arc-shaped guide groove 7, so that the friction force between the anti-collision rod 6 and the arc-shaped guide groove 7 can be greatly reduced, the synchronous sliding of the upper end and the lower end of the anti-collision rod 6 is facilitated, and the anti-collision rod 6 is prevented from being blocked due to the inclination.

Preferably, the crash bar 6 is sleeved with a roller 17 coaxially and rotatably connected with the crash bar 6, and the rolling of the roller 17 can further decompose the impact force, thereby being beneficial to the forced steering of the crash bar 6 to the vehicle.

Preferably, the gravity beam 10 is a cavity structure, the cavity is filled with a counterweight 18 such as sand, metal chips, water and the like, and the overall weight of the gravity beam 10 can be changed by filling a proper amount of the counterweight 18 according to actual needs, so as to provide better buffering energy absorption and reverse thrust effects in response to impact.

Preferably, the cross beam 2 and the gravity beam 10 are respectively formed by sequentially connecting a plurality of sections of cross beam structure units and gravity beam structure units, and two ends of any section of cross beam structure unit and any section of gravity beam structure unit are respectively fixed through a support rib plate fixed on the bridge 19, so that the overall stability of the cross beam 2 and the gravity beam 10 can be ensured, the local falling of the cross beam 2 and the gravity beam 10 caused by overlarge length span can be avoided, the large pressure on the vertical rod 3 can be avoided, and the service life of the whole guardrail is not facilitated.

The guardrail has no difference with the prior guardrail in normal use, can well play a role in isolation and prevent pedestrians and vehicles from accidentally falling; when the vehicle is out of control and rushes to the guardrail, the anti-collision rod arranged on the inner side of the bridge firstly contacts with the vehicle and drives the sliding block to slide along the arc-shaped sliding chute under the action of collision, the sliding block pushes the pushing sliding block to slide upwards through the connecting rod when sliding, and then the gravity beam is pushed to move upwards through the vertical ejector rod, and the vehicle collision force is gradually consumed by utilizing the gravity of the gravity beam and the counterweight filled in the gravity beam; then, the gravity beam rises for a certain distance and then begins to fall, so that the pushing slide block is pushed reversely to slide downwards, and the slide block, namely the bumper bar, continuously slides; the arc-shaped sliding track of the anti-collision rod can drive the vehicle collision part to turn, so that the direct collision between the vehicle and the guardrail can be effectively avoided; therefore, the invention can not only buffer, consume and decompose the impact force of the vehicle, but also intervene the operation of the vehicle to forcibly change the motion direction of the vehicle, finally make the side surface of the vehicle collide with the guardrail, prevent the vehicle from rushing out of the bridge floor, and effectively protect the safety of the vehicle and the safety of the guardrail.

Meanwhile, the anti-collision rod has a certain moving range, so that the vehicle cannot cause rapid change of speed at the moment of collision, the passive deceleration time of the vehicle is prolonged, the inertial movement of the body of the vehicle personnel is slowed down, more reaction time is brought to the vehicle personnel to implement self protection and vehicle control, and the secondary damage of the vehicle collision to the vehicle personnel is reduced as much as possible; in addition, because of the range nature activity of crash bar for it has certain dodge and buffering space when receiving the vehicle striking, avoid once only bearing the whole impact force of vehicle and lead to self to damage, and along with the guide of crash bar to vehicle direction of motion, partly vehicle impact force acts on the gravity beam through connecting rod and top push slider, make the impact force that crash bar self received reduce gradually, effectively avoided the bending or the rupture of crash bar, make the guardrail remain intact all the time, good guard action, provide effective guarantee for subsequent reverse thrust turns to and recycles.

Claims

1. The bridge guardrail capable of changing the vehicle impact direction comprises a base body (1), a cross beam (2) arranged above the base body (1) and a plurality of vertical rods (3) used for supporting the cross beam (2), wherein the vertical rods (3) are uniformly distributed along the length direction of the cross beam (2), the bridge guardrail is characterized in that an arc-shaped sliding groove (4) with an upward opening is formed in the base body (1), the arc-shaped sliding groove (4) faces the inner side direction of a bridge (19), a sliding block (5) is arranged in the arc-shaped sliding groove (4), an anti-collision rod (6) vertically arranged above the sliding block (5) is arranged on the sliding block (5), an arc-shaped guide groove (7) is formed in the cross beam (2), the arc-shaped sliding groove (4) corresponds to the arc-shaped guide groove (7) up and down, the radian of the arc-shaped guide groove (7) is consistent; the vertical rod (3) is provided with a pushing sliding block (8) which vertically slides on the vertical rod (3), the pushing sliding block (8) is universally hinged with the sliding block (5) through a connecting rod (9), and the connecting rod (9) is obliquely arranged towards the outer side direction of the cross beam (2); the device is characterized by further comprising a gravity beam (10) arranged above the cross beam (2), wherein vertical ejector rods (11) which are arranged below the gravity beam and correspond to the pushing sliding blocks (8) one by one are arranged on the gravity beam (10), and the lower end of each vertical ejector rod (11) penetrates through the cross beam (2) in a downward sliding mode and is in contact with the pushing sliding block (8).

2. The bridge guardrail for changing the vehicle impact direction as claimed in claim 1, wherein the pushing slide block (8) is provided with a positioning hole (12) matched and corresponding to the vertical mandril (11), a bolt (13) screwed from bottom to top is arranged in the positioning hole (12), and the lower end of the vertical mandril (11) is contacted with the upper end of the bolt (13).

3. The bridge guardrail for changing the vehicle impact direction as claimed in claim 1, wherein at least two vertical top rods (11) corresponding to any one pushing slide block (8) are uniformly distributed along the circumference of the axis of the vertical rod (3).

4. A bridge guardrail for changing the direction of impact of a vehicle according to claim 1, characterized in that the upper ends of the vertical rods (3) are connected with the cross beam (2), and the lower ends of the vertical rods (3) are connected with the base body (1), so that the vertical rods (3) support the cross beam (2).

5. A bridge guardrail for changing the direction of impact of a vehicle according to claim 1, characterized in that the upper ends of the vertical rods (3) are connected with the cross beam (2), and the lower ends of the vertical rods (3) are fixed on the bridge (19) to realize the support of the cross beam (2) by the vertical rods (3).

6. The bridge guardrail for changing the vehicle impact direction is characterized by further comprising a cross beam (14) which is arranged below the cross beam (2) and has the same direction with the cross beam (2) and a plurality of pillars (15) for supporting the cross beam (14), wherein the pillars (15) are uniformly distributed along the length direction of the cross beam (14), and the pillars (15) and the vertical rods (3) are arranged at intervals; the upper end of the vertical rod (3) is connected with the cross beam (2), and the lower end of the vertical rod (3) is connected with the cross rod (14).

7. The bridge guardrail for changing the collision direction of a vehicle as claimed in claim 1, wherein the upper end of the crash bar (6) is provided with a roller (16) coaxially and rotatably connected with the crash bar (6), and the roller (16) is slidably arranged in the arc-shaped guide groove (7).

8. The bridge guardrail for changing the collision direction of a vehicle as claimed in claim 1, wherein the crash bar (6) is sleeved with a roller (17) coaxially and rotatably connected with the crash bar (6).

9. A bridge guardrail according to claim 1, characterized in that the gravity beam (10) is of a cavity structure, and the cavity is filled with a weight (18).

10. The bridge guardrail for changing the vehicle impact direction according to claim 1, wherein the cross beam (2) and the gravity beam (10) are respectively formed by sequentially connecting a plurality of sections of cross beam structure units and gravity beam structure units, and two ends of any section of cross beam structure unit and any section of gravity beam structure unit are respectively fixed through supporting rib plates.