CN114855670A

CN114855670A - Anti-collision guardrail for highway and construction method

Info

Publication number: CN114855670A
Application number: CN202210487456.XA
Authority: CN
Inventors: 占新文; 方文生; 方大庆
Original assignee: Anhui Luda Highway Engineering Co ltd
Current assignee: Anhui Luda Highway Engineering Co ltd
Priority date: 2022-05-06
Filing date: 2022-05-06
Publication date: 2022-08-05
Anticipated expiration: 2042-05-06
Also published as: CN114855670B

Abstract

The invention discloses an anti-collision guardrail for a highway and a construction method thereof. This application has and makes car and stand take place to wipe when bumping, reduces the effect of the harm that the stand caused to the car.

Description

Anti-collision guardrail for highway and construction method

Technical Field

The invention relates to the field of anti-collision guardrails, in particular to an anti-collision guardrail for a road and a construction method.

Background

The highway protective guard is the most important traffic infrastructure, and at present, road traffic is increasingly developed in China, and the protective guard is frequently used on roads, and the highway protective guard is made of steel materials such as round steel tubes, square steel tubes or profiled steel plates. Crash barriers used outdoors generally require surface treatment to achieve a more aesthetically pleasing appearance while not being susceptible to rust.

The utility model discloses a chinese utility model patent that bulletin number is CN207934585U in the correlation technique, it discloses a concatenation formula rail guard, including the rail guard body, the rail guard body includes that two intervals set up in subaerial stand side by side and be fixed in the protection network between two adjacent stands, the protection network includes a plurality of mutual parallel arrangement's montant and be located between the montant with montant welded fastening's horizontal pole, two stands all are provided with the first recess that supplies rail guard body one end to stretch into along vertical direction, one side that the stand is located first recess is provided with the first draw-in groove one that supplies the montant embedding, be provided with a plurality of first breachs that supply the horizontal pole to stretch into that are linked together with first draw-in groove one along vertical direction on the stand.

Aiming at the related technology, the upright post in the existing protective guard is often made of metal materials, and when the automobile is rubbed and collided with the upright post in the driving process, the upright post can scratch or dent on the automobile body, so that the damage of the upright post to the automobile is increased.

Disclosure of Invention

In order to reduce the damage of the upright column to the automobile when the automobile and the upright column are rubbed and collided, the application provides the anti-collision guardrail for the highway and the construction method.

In a first aspect, the present application provides a crash barrier for a roadway, which adopts the following technical solution:

the utility model provides an anticollision barrier for highway, includes the stand, the stand is including being fixed in subaerial bottom plate, being fixed in well pipe on the bottom plate top surface, being fixed in roof and cover on the well pipe top end face are located the rubber sleeve outside the pipe, the top fixed connection of rubber sleeve in on the roof, the bottom fixed connection of rubber sleeve in on the bottom plate, it has the air to dash in the rubber sleeve.

Through adopting above-mentioned technical scheme, the bottom plate is fixed in subaerially, and on the well pipe was fixed in the bottom plate, on the roof was fixed in the top surface of well pipe, the rubber sleeve cover was located outside the well pipe, and the both ends of rubber sleeve are fixed mutually with bottom plate and roof respectively, dashes into air in the rubber sleeve, and when the car took place to wipe with the inside rubber sleeve that has the air, the rubber sleeve received the extrusion of car automobile body and takes place to deform to the rubber sleeve to when making car and stand take place to wipe, reduce the harm that the stand caused the car.

Preferably, a first sliding groove is formed in the inner wall of the middle pipe, a sliding block is vertically and slidably arranged in the first sliding groove, a first communicating hole is formed in the side wall, close to the outer peripheral face of the middle pipe, of the first sliding groove, a second communicating hole is formed in the side face of the sliding block, the second communicating hole is located above the first communicating hole, high-pressure gas is filled in the middle pipe, and a triggering mechanism capable of pushing the sliding block downwards when the rubber sleeve is extruded is arranged on the stand column.

Through adopting above-mentioned technical scheme, when the car took place to wipe with the stand that inside dashes there is the air and bumps, the rubber sleeve received the extrusion and takes place to warp, trigger mechanism promotes the sliding block and slides down this moment, makes first intercommunicating pore and second intercommunicating pore be linked together to make intraductal high-pressure gas can rush into in the rubber sleeve in the well, atmospheric pressure in the rubber sleeve increases this moment, hinder the car to continuously be close to well pipe, thereby reduced the car and hit the curved condition that leads to the stand to take place deformation with well pipe, reduced the damage of anticollision barrier.

Preferably, a sliding hole is formed in the bottom surface of the top plate, the sliding hole is located between the rubber sleeve and the middle pipe, a second sliding groove is formed in the inner wall of the sliding hole, a third sliding groove communicated with the second sliding groove is further formed in the bottom surface of the top plate, the trigger mechanism comprises a first control block slidably disposed in the sliding hole, a second control block slidably disposed in the second sliding groove, and a third control block slidably disposed in the third sliding groove, the third control block is fixedly connected to the top surface of the sliding block, a first inclined surface is formed in the top surface of the first control block, the first inclined surface is located on one side, close to the second control block, of the first control block, a second inclined surface capable of abutting against the first inclined surface is formed in the second control block, and a third inclined surface is formed in one side, far away from the second inclined surface, of the second control block, the third inclined surface is positioned at the lower part of the second control block, and a fourth inclined surface which can be abutted against the third inclined surface is arranged on the top surface of the third control block.

By adopting the technical scheme, when the automobile rubs against the upright column with air inside, the rubber sleeve is extruded to deform, the air pressure in the rubber sleeve is increased, the increased air pressure generates thrust on the first control block, so that the first control block slides upwards in the sliding hole, under the interference action of the first inclined plane and the second inclined plane, the second control block slides towards the direction far away from the first control block, and under the interference action of the third inclined plane and the fourth inclined plane, the third control block is pushed to slide downwards, so that the third control block drives the sliding block to slide downwards, and the first communicating hole is communicated with the second communicating hole.

Preferably, a first limiting groove is formed in the side face of the sliding hole, a first limiting block is fixedly connected to the side face of the first control block, and the first limiting block is arranged in the first limiting groove in a sliding mode.

Through adopting above-mentioned technical scheme, first stopper slides and sets up in first spacing inslot to hinder first control piece and break away from the slide opening, improved the stability of trigger mechanism structure.

Preferably, a second limiting groove is formed in the side wall of the first sliding groove, a second limiting block is fixedly connected to the side face of the sliding block, and the second limiting block is arranged in the second limiting groove in a sliding mode.

Through adopting above-mentioned technical scheme, the second stopper slides and sets up in the second spacing inslot to hinder the sliding block to break away from first sliding tray, make that the sliding block can be more stable slide in first sliding tray.

Preferably, a return spring is arranged in the second limiting groove, one end of the return spring abuts against the bottom surface of the second limiting groove, and the other end of the return spring abuts against the bottom surface of the second limiting block.

Through adopting above-mentioned technical scheme, reset spring sets up in the second spacing inslot, makes reset spring can provide ascending thrust for the sliding block to make the sliding plate under the condition that is not promoted by trigger mechanism, the second intercommunicating pore can be located the top of first intercommunicating pore, makes first intercommunicating pore not be linked together with the second intercommunicating pore.

Preferably, an inflation hole communicated with the interior of the middle pipe is formed in the bottom plate, an air valve mechanism is arranged in the inflation hole, the air valve mechanism comprises a supporting plate fixedly connected to the inner wall of the inflation hole, an air inlet hole is formed in the supporting plate, a first rubber pad is arranged on the side face, close to the middle pipe, of the supporting plate, and the first rubber pad is fixed to the supporting plate through a bolt.

Through adopting above-mentioned technical scheme, the backup pad is fixed in on the inner wall of aerifing the pore, and first rubber pad passes through the bolt fastening in the backup pad is close to one side of well pipe, makes the staff can make high-pressure gas pass through the inlet port and pour into well pipe in through aerifing the pore to accomplish at the staff and aerify the back, first rubber pad can be in well intraductal high-pressure gas's pressure down with inlet port shutoff post, hinder intraductal high-pressure gas outflow, make well intraductal keep high-pressure state.

Preferably, the top plate is provided with an adjusting hole, the adjusting hole is located between the rubber sleeve and the middle pipe, an adjusting mechanism is arranged in the adjusting hole, the adjusting mechanism comprises an adjusting bolt in threaded connection with the inner wall of the adjusting hole, and a second rubber pad is arranged between the adjusting bolt and the top surface of the top plate.

Through adopting above-mentioned technical scheme, adjusting bolt and the inner peripheral surface threaded connection of regulation hole, the second rubber pad sets up between the top surface of adjusting bolt and roof, makes the staff can rotate adjusting bolt and regulates and control the pressure of the air between rubber sleeve and the well pipe, has reduced the interior long-time atmospheric pressure that keeps too big of rubber sleeve and has leaded to the rubber sleeve to warp or the atmospheric pressure undersize in the rubber sleeve leads to the stand can't form the condition emergence of protection to the car. The second rubber pad improves the air tightness of the fastened adjusting mechanism.

In a second aspect, the application provides a method for constructing an anti-collision guardrail for a highway, which adopts the following technical scheme:

a construction method of an anti-collision guardrail for a highway comprises the following steps: s1: the bottom plate of the upright post is fixed on the ground by a worker; s2: a worker injects high-pressure gas into the middle pipe through the inflation duct; s3: and the air pressure of the air in the rubber sleeve is adjusted by the staff through the adjusting bolt.

Through adopting above-mentioned technical scheme, the staff is fixed in subaerial with the stand, wash into high-pressure gas in with well pipe through aerifing the pore, make when car and inside stand that has washed the air take place to wipe and bump, the rubber sleeve is extruded and takes place to warp, make in the intraductal high-pressure gas of well can wash into in the rubber sleeve, it bends the condition that leads to the stand to take place to deform to have reduced the car to hit well pipe, the damage of anticollision barrier has been reduced, make the rubber sleeve form certain guard action to the automobile body of car simultaneously, when making car and stand take place to wipe and bump, reduce the harm that the stand caused to the car.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the bottom plate is fixed on the ground, the middle pipe is fixed on the bottom plate, the top plate is fixed on the top surface of the middle pipe, the rubber sleeve is sleeved outside the middle pipe, two ends of the rubber sleeve are respectively fixed with the bottom plate and the top plate, air is filled in the rubber sleeve, and when an automobile collides with the rubber sleeve filled with the air, the rubber sleeve is extruded by the automobile body to deform towards the rubber sleeve, so that when the automobile collides with the upright posts, the damage of the upright posts to the automobile is reduced;

2. when an automobile rubs against the upright post with air filled inside, the rubber sleeve is extruded to deform, the trigger mechanism pushes the sliding block to slide downwards to enable the first communicating hole to be communicated with the second communicating hole, so that high-pressure gas in the middle pipe can be flushed into the rubber sleeve, the air pressure in the rubber sleeve is increased, the automobile is prevented from continuously approaching the middle pipe, the situation that the upright post deforms due to the fact that the automobile bends the middle pipe is reduced, and damage to the anti-collision guardrail is reduced;

3. when the automobile rubs against the upright column with air filled inside, the rubber sleeve is extruded to deform, the air pressure in the rubber sleeve is increased, the increased air pressure generates thrust on the first control block, the first control block slides upwards in the sliding hole, the second control block slides towards the direction far away from the first control block under the action of the interference of the first inclined surface and the second inclined surface, and the third control block is pushed to slide downwards under the action of the interference of the third inclined surface and the fourth inclined surface, so that the third control block drives the sliding block to slide downwards, and the first communicating hole is communicated with the second communicating hole.

Drawings

Fig. 1 is a schematic view of the overall structure of a crash barrier in an embodiment of the present application.

Fig. 2 is a sectional view of a pillar in an embodiment of the present application.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Fig. 4 is a cross-sectional view of a middle tube in an embodiment of the present application.

Fig. 5 is a partially enlarged view at B in fig. 2.

Description of reference numerals:

1. a base plate; 11. an inflation duct; 111. a vertical section; 112. a transverse segment; 2. a middle tube; 21. a first sliding groove; 22. a first communication hole; 23. a second limit groove; 3. a top plate; 31. a slide hole; 311. a first limit groove; 32. a second sliding groove; 33. a third sliding groove; 34. an adjustment hole; 4. a rubber sleeve; 5. a slider; 51. a second limiting block; 52. a second communication hole; 53. a return spring; 6. a trigger mechanism; 61. a first control block; 611. a first stopper; 612. a first inclined plane; 62. a second control block; 621. a second inclined plane; 622. a third inclined plane; 63. a third control block; 631. a fourth slope; 7. a valve train; 71. a support plate; 711. an air inlet; 72. a first rubber pad; 8. an adjustment mechanism; 81. adjusting the bolt; 82. a second rubber pad; 100. a column; 101. a connecting rod.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses an anti-collision guardrail for a road. Referring to fig. 1 and 2, the crash barrier includes two columns 100 and two connecting rods 101, the two connecting rods 101 are horizontally fixed between two adjacent columns 100, and two ends of the connecting rod 101 are respectively fixed to the columns 100 at two sides of the connecting rod 101.

Referring to fig. 1 and 2, the column 100 includes a bottom plate 1, a middle pipe 2, a top plate 3, a rubber sleeve 4, a sliding block 5, a trigger mechanism 6, an air valve mechanism 7, and an adjusting mechanism 8. Bottom plate 1 and roof 3 are square board, and bottom plate 1 is fixed in subaerially, and the vertical welded fastening of well pipe 2 is in the middle part of bottom plate 1 top surface, and on 3 welded fastening of roof were in the top terminal surface of well pipe 2, well pipe 2 was located the bottom surface middle part of roof 3, and two connecting rods 101 welded fastening respectively were in the roof 3 and the bottom plate 1 of connecting rod 101 both sides stand 100. Rubber sleeve 4 is the tubular structure, and outside 2 well pipes were located to rubber sleeve 4 covers, the top fixed connection of rubber sleeve 4 was on the bottom surface of roof 3, and the bottom fixed connection of rubber sleeve 4 was on the top surface of bottom plate 1, dashed air between rubber sleeve 4 and well pipe 2.

Referring to fig. 2 and 3, a first sliding groove 21 is formed in the inner wall of the middle pipe 2, the first sliding groove 21 is communicated with the top end face of the middle pipe 2, the sliding block 5 is arranged in the first sliding groove 21 along the vertical sliding direction, a first communicating hole 22 is formed in the side wall, close to the outer peripheral face of the middle pipe 2, of the first sliding groove 21, a second communicating hole 52 is formed in the side face of the sliding block 5, high-pressure gas is filled in the middle pipe 2, and the pressure in the middle pipe 2 can be 1.6 MPa.

Referring to fig. 3 and 4, two second limiting grooves 23 are formed in the side wall of the first sliding groove 21, the length direction of the second limiting grooves 23 is parallel to the sliding direction of the sliding block 5, and the two second limiting grooves 23 are respectively located on two side walls of the first sliding groove 21, which are away from each other. Two second limiting blocks 51 are welded and fixed on the sliding block 5, the two second limiting blocks 51 are respectively located on two sides of the sliding block 5, which are far away from each other, and the two second limiting blocks 51 are respectively arranged in the two second limiting grooves 23 in a sliding manner. Reset springs 53 are arranged in the two second limiting grooves 23, one ends of the reset springs 53 abut against the bottom surfaces of the second limiting grooves 23, and the other ends of the reset springs 53 abut against the bottom surfaces of the second limiting blocks 51. The second communication hole 52 is positioned above the first communication hole 22 by the elastic force of the return spring 53.

Referring to fig. 2 and 5, an inflation duct 11 is formed in the bottom plate 1, the inflation duct 11 is communicated with the middle pipe 2, the inflation duct 11 includes a vertical section 111 and a horizontal section 112, the horizontal section 112 is horizontally arranged on the side surface of the bottom plate 1, the vertical section 111 is vertically arranged on the top surface of the top plate 3, one end of the vertical section 111 is communicated with the middle pipe 2, and the other end of the vertical section 111 is communicated with the horizontal section 112.

Referring to fig. 2 and 5, the valve train 7 is disposed in the vertical section 111, and the valve train 7 includes a support plate 71 and a first rubber pad 72. The supporting plate 71 is welded and fixed on the inner wall of the vertical section 111, the top surface of the supporting plate 71 is provided with two air inlet holes 711, the two air inlet holes 711 are symmetrically distributed on the supporting plate 71 along the circumferential direction of the supporting plate 71, the first rubber pad 72 is arranged on the side surface, close to the middle pipe 2, of the supporting plate 71, the first rubber pad 72 is fixed on the supporting plate 71 through bolts, and the side surface of the first rubber pad 72 is abutted to the inner wall of the vertical section 111.

Referring to fig. 2 and 3, a sliding hole 31 is formed in the bottom surface of the top plate 3, the sliding hole 31 is located between the rubber sleeve 4 and the middle pipe 2, a second sliding groove 32 is horizontally formed in the inner wall, close to the middle pipe 2, of the sliding hole 31, a third sliding groove 33 is further formed in the bottom surface of the top plate 3, and the third sliding groove 33 is communicated with the second sliding groove 32.

Referring to fig. 2 and 3, the trigger mechanism 6 includes a first control block 61, a second control block 62, and a third control block 63. The first control block 61 is slidably disposed in the sliding hole 31, a first limiting groove 311 is disposed on a side wall of the sliding hole 31 away from the middle pipe 2, the first limiting groove 311 is a dovetail groove, a length direction of the first limiting groove 311 is parallel to a sliding direction of the first control block 61, a first limiting block 611 is welded and fixed on a side surface of the first control block 61, the first limiting block 611 is a dovetail block, and the first limiting block 611 is slidably disposed in the first limiting groove 311.

Referring to fig. 2 and 3, the second control block 62 is slidably disposed in the second sliding groove 32, a first inclined surface 612 is disposed on a top surface of the first control block 61, the first inclined surface 612 is located on a side of the first control block 61 close to the second control block 62, a second inclined surface 621 is disposed on the second control block 62, and the second inclined surface 621 abuts against the first inclined surface 612. The second control block 62 is provided with a third inclined surface 622 on the side away from the second inclined surface 621, the third inclined surface 622 is located at the lower portion of the second control block 62, the third control block 63 is slidably disposed in the third sliding groove 33, the third control block 63 is welded and fixed to the top surface of the sliding block 5, the top surface of the third control block 63 is provided with a fourth inclined surface 631, and the fourth inclined surface 631 abuts against the third inclined surface 622.

Referring to fig. 2, an adjusting hole 34 is formed in the top plate 3, the adjusting hole 34 is located between the rubber sleeve 4 and the middle pipe 2, an adjusting mechanism 8 is arranged in the adjusting hole 34, and the adjusting mechanism 8 includes an adjusting bolt 81 and a second rubber pad 82. The adjusting bolt 81 is in threaded connection with the inner wall of the adjusting hole 34, and the second rubber pad 82 is arranged between the adjusting bolt 81 and the top surface of the top plate 3.

The implementation principle of the anti-collision guardrail for the highway is as follows: when the automobile is rubbed and collided with the rubber sleeve 4 with air filled inside, the rubber sleeve 4 is extruded by the automobile body to deform the rubber sleeve 4, so that the damage of the upright post 100 to the automobile is reduced when the automobile is rubbed and collided with the upright post 100. Meanwhile, when the automobile collides with the upright post 100 with air inside, the rubber sleeve 4 is extruded to deform, at this time, the first control block 61 slides upwards in the sliding hole 31, under the action of the interference of the first inclined surface 612 and the second inclined surface 621, the second control block 62 slides towards the direction away from the first control block 61, and under the action of the interference of the third inclined surface 622 and the fourth inclined surface 631, the third control block 63 is pushed to slide downwards, so that the third control block 63 drives the sliding block 5 to slide downwards, the first communication hole 22 is communicated with the second communication hole 52, high-pressure air in the middle tube 2 can flush into the rubber sleeve 4, at this time, the air pressure in the rubber sleeve 4 is increased, the automobile is prevented from continuously approaching the middle tube 2, the situation that the upright post 100 deforms due to the fact that the automobile collides with the middle tube 2 is reduced, and damage to the crash barrier is reduced.

The embodiment of the application discloses a construction method of an anti-collision guardrail for a highway, which comprises the following steps:

s1: the staff fixes the bottom plate 1 of the upright post 100 on the ground;

s2: a worker injects high-pressure gas into the middle pipe 2 through the inflation duct 11;

s3: the staff adjusts the air pressure of the air in the rubber sleeve 4 through the adjusting bolt 81.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A crash barrier for highways, comprising a post (100), characterized in that: stand (100) are including being fixed in subaerial bottom plate (1), being fixed in well pipe (2) on bottom plate (1) top surface, being fixed in roof (3) and the cover on well pipe (2) top end face are located the outer rubber sleeve (4) of well pipe (2), the top fixed connection of rubber sleeve (4) in on roof (3), the bottom fixed connection of rubber sleeve (4) in on bottom plate (1), it has the air to dash in rubber sleeve (4).

2. A crash barrier for a road according to claim 1, wherein: seted up first sliding tray (21) on the inner wall of well pipe (2), vertical slip is provided with sliding block (5) in first sliding tray (21), first sliding tray (21) are close to seted up first intercommunicating pore (22) on the lateral wall of well pipe (2) outer peripheral face, second intercommunicating pore (52) have been seted up on the side of sliding block (5), second intercommunicating pore (52) are located the top of first intercommunicating pore (22), well pipe (2) are dashed high-pressure gas, be provided with on stand (100) can with when being extruded rubber sleeve (4) sliding block (5) trigger mechanism (6) that promote downwards.

3. A crash barrier for a road according to claim 2, wherein: the bottom surface of the top plate (3) is provided with a sliding hole (31), the sliding hole (31) is located between the rubber sleeve (4) and the middle pipe (2), the inner wall of the sliding hole (31) is provided with a second sliding groove (32), the bottom surface of the top plate (3) is further provided with a third sliding groove (33) communicated with the second sliding groove (32), the trigger mechanism (6) comprises a first control block (61) arranged in the sliding hole (31) in a sliding manner, a second control block (62) arranged in the second sliding groove (32) in a sliding manner and a third control block (63) arranged in the third sliding groove (33) in a sliding manner, the third control block (63) is fixedly connected to the top surface of the sliding block (5), the top surface of the first control block (61) is provided with a first inclined surface (612), and the first inclined surface (612) is located on the first control block (61) close to the second control block (62) And a second inclined surface (621) which can be abutted against the first inclined surface (612) is arranged on the second control block (62), a third inclined surface (622) is arranged on one side, away from the second inclined surface (621), of the second control block (62), the third inclined surface (622) is positioned at the lower part of the second control block (62), and a fourth inclined surface (631) which can be abutted against the third inclined surface (622) is arranged on the top surface of the third control block (63).

4. A crash barrier for a road according to claim 3, wherein: a first limiting groove (311) is formed in the side face of the sliding hole (31), a first limiting block (611) is fixedly connected to the side face of the first control block (61), and the first limiting block (611) is arranged in the first limiting groove (311) in a sliding mode.

5. A crash barrier for a road according to claim 2, wherein: the lateral wall of first sliding tray (21) has been seted up second spacing groove (23), the side fixedly connected with second stopper (51) of sliding block (5), second stopper (51) slide and set up in second spacing groove (23).

6. A crash barrier for a road according to claim 5, wherein: a return spring (53) is arranged in the second limiting groove (23), one end of the return spring (53) abuts against the bottom surface of the second limiting groove (23), and the other end of the return spring (53) abuts against the bottom surface of the second limiting block (51).

7. A crash barrier for a road according to claim 2, wherein: the bottom plate (1) is provided with an air inflation hole channel (11) communicated with the interior of the middle pipe (2), an air valve mechanism (7) is arranged in the air inflation hole channel (11), the air valve mechanism (7) comprises a supporting plate (71) fixedly connected to the inner wall of the air inflation hole channel (11), an air inlet hole (711) is formed in the supporting plate (71), a first rubber pad (72) is arranged on the side face, close to the middle pipe (2), of the supporting plate (71), and the first rubber pad (72) is fixed to the supporting plate (71) through bolts.

8. A crash barrier for a road according to claim 7, wherein: the adjustable rubber tube is characterized in that an adjusting hole (34) is formed in the top plate (3), the adjusting hole (34) is located between the rubber sleeve (4) and the middle tube (2), an adjusting mechanism (8) is arranged in the adjusting hole (34), the adjusting mechanism (8) comprises an adjusting bolt (81) in threaded connection with the inner wall of the adjusting hole (34), and a second rubber pad (82) is arranged between the adjusting bolt (81) and the top surface of the top plate (3).

9. A method of constructing a crash barrier for a road according to claim 8, comprising the steps of:

s1: the bottom plate (1) of the upright post (100) is fixed on the ground by a worker;

s2: a worker injects high-pressure gas into the middle pipe (2) through the inflation duct (11);

s3: the air pressure of the air in the rubber sleeve (4) is adjusted by the staff through the adjusting bolt (81).