CN204570534U - A kind of expressway guardrail - Google Patents

Abstract

A kind of expressway guardrail, comprise column (10), guardrail board (20) and the buffering bracket (30) be arranged between described column (10) and described guardrail board (20), described column (10) outside is arranged with a conically shaped (11), and the external diameter of described conically shaped (11) becomes large from top to bottom gradually; Described buffering bracket (30) is set in the outside of described conically shaped (11) from the top of described conically shaped (11); Described guardrail board (20) is buckled on described buffering bracket (30); Described buffering bracket (30) has a bellmouth (31) matched with described conically shaped (11), and the internal diameter of described bellmouth (31) becomes large from top to bottom gradually.Above-mentioned expressway of the present utility model guardrail provides the buffer structure that can move upward, eliminate the link of whole bolt and so on, substantially increase the buffering deformation stroke of expressway guardrail, avoid the generation of secondary injury, and structure of modification is few, be convenient to install.

Description

A kind of expressway guardrail

Technical field

The utility model relates to a kind of traffic safety protection technology, especially a kind of expressway guardrail with buffer structure for speedway and so on.

Background technology

The expressway guardrail of such as expressway guardrail and so on is the principal mode of semi-steel guardrail, is a kind of mutually to splice with undulatory guardrail board and by the continuous structure of upright supports.When vehicle collides it, because guardrail board has good Impact Resisting Capability and endergonic effect, be both not easy to be smashed, can have played a very good protection to vehicle and driver and conductor again simultaneously.The preventing principle of expressway guardrail utilizes the distortion of soil matrix, column, guardrail board to absorb collision energy; and force errant vehicle to change direction, be returned to normal travel direction, prevent vehicle run-off-road; to protect vehicle and passenger, the loss that minimizing accident causes.

Fig. 1 display be a kind of expressway guardrail of typical structure, comprise column 10, undulatory guardrail board 20 and the buffering bracket 30 be arranged between column 10 and guardrail board 20, buffering bracket 30 is bolted on column 10, and guardrail board 20 is bolted on buffering bracket 30.The cylindrical shape that buffering bracket 30 is made for galvanized steel plain sheet or polygonal thin-shell absorption structure, in time colliding, buffering bracket 30 absorbs a part of collision energy by stress deformation.

The cause that the expressway guardrail of above-mentioned typical structure is fixedly connected with due to bolt, only distortion energy-absorbing function can be provided in the horizontal direction when being collided, especially in the position at column 10 place, substantially buffering bracket 30 can only be leaned on to provide the distortion of limited travel, there is certain defect in buffer protection usefulness.

Chinese patent application CN 200480025123.5 discloses a kind of expressway guardrail, and which provide elastic body that a kind of rubber makes to replace the buffering bracket shown in Fig. 1, this elastomer design has up-narrow and down-wide horizontally disposed trapezoid-shaped openings.Can amoeboid movement from bottom to top time the prior art claims that elastic body is impacted, thus drive guardrail board to move upward by elastic body, can obtain the distortion of more Long Distances, energy-absorbing effect is better.But actual conditions are, because trapezoid-shaped openings is a kind of up-narrow and down-wide structure, material more thus rigidity in elastomeric top are larger, and the few rigidity of lower material is less, when thus being impacted, lower deformation can be larger, in fact total can move downward instead of move upward, and guardrail board finally can be caused to move earthward and do not reach the object of protection.

In addition, buffering bracket or elastic body in prior art, and guardrail board etc. is all be fixed on column by the syndeton of bolt and so on, when sharp impacts occurs, these metal connection parts come off sometimes, fly out, even can hit the vehicle that relative direction travels, cause the consequence being difficult to expect.

Utility model content

The technical problems to be solved in the utility model is to provide a kind of expressway guardrail, to reduce or to avoid problem noted earlier.

Specifically, the utility model provides a kind of expressway guardrail, this expressway guardrail provides a kind of buffer structure moved upward, eliminate the link of whole bolt and so on, substantially increase the buffering deformation stroke of expressway guardrail, avoid the generation of secondary injury, and structure of modification is few, is convenient to install.

For solving the problems of the technologies described above, the utility model proposes a kind of expressway guardrail, comprise column, undulatory guardrail board and the buffering bracket be arranged between described column and described guardrail board, be arranged with a conically shaped outside described column, the external diameter of described conically shaped becomes large from top to bottom gradually; Described buffering bracket is set in the outside of described conically shaped from the top of described conically shaped; Described guardrail board is buckled on described buffering bracket, and described buffering bracket has a bellmouth matched with described conically shaped, and the internal diameter of described bellmouth becomes large from top to bottom gradually.

Preferably, it is protruding that described buffering bracket is provided with at least one buckle coordinated with the hole clipping in described guardrail board, and described buckle projection has the neck of the minor diameter of a large diameter end and a described end of connection.

Preferably, described hole clipping has the macropore portion that is greater than described end, and one is greater than described neck and is less than the aperture portion of described end.

Above-mentioned expressway of the present utility model guardrail provides the buffer structure that can move upward, eliminate the link of whole bolt and so on, substantially increase the buffering deformation stroke of expressway guardrail, avoid the generation of secondary injury, and structure of modification is few, be convenient to install.

Accompanying drawing explanation

The following drawings is only intended to schematically illustrate the utility model and explain, does not limit scope of the present utility model.Wherein,

Fig. 1 display be a kind of structural representation of expressway guardrail of typical structure;

Fig. 2 display be the structural representation of expressway guardrail according to a specific embodiment of the present utility model;

Fig. 3 display be the top view of the buffering bracket of the guardrail of expressway shown in Fig. 1;

Fig. 4 display be the partial exploded perspective view of expressway guardrail according to a specific embodiment of the present utility model, wherein just show buffering bracket and guardrail board.

Detailed description of the invention

In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and detailed description of the invention of the present utility model is described.Wherein, identical parts adopt identical label.

Just as described in the background section, the utility model provides a kind of expressway guardrail of modified node method, Fig. 2 display be the structural representation of expressway guardrail according to a specific embodiment of the present utility model, as shown in the figure, expressway of the present utility model guardrail comprises column 10, undulatory guardrail board 20 and the buffering bracket 30 be arranged between column 10 and guardrail board 20, with Fig. 1 unlike, the utility model is arranged with a conically shaped 11 outside column 10, the external diameter of conically shaped 11 becomes large from top to bottom gradually, that is the utility model is without the need to changing existing pillar construction, only need, on the cover of the outside of column 10, a conically shaped 11 is installed.

The utility model is after the sheathed conically shaped 11 in the outside of column 10, and existing buffering bracket needs to be modified into the form that can match with conically shaped 11, and its detailed construction as shown in Figure 3-4.Buffering bracket 30 is set in the outside of conically shaped 11 from the top of conically shaped 11; Guardrail board 20 is buckled on buffering bracket 30.

The above-mentioned expressway guardrail that the utility model proposes, its primary structure all adopts form that is sheathed or buckle, eliminate the link of whole bolt of the prior art and so on, thus the metal connection parts come off can not be produced when colliding, avoid the generation of secondary injury, and structure of modification is few, be convenient to install.The most important thing is; buffering bracket 30 of the present utility model is set in the outside of conically shaped from the top of conically shaped 11; when occurring to clash into; buffering bracket 30 can move up along the external surface of conically shaped 11; thus provide the buffer structure that can move upward; substantially increase the buffering deformation stroke of expressway guardrail, can absorb and more clash into kinetic energy, better protective effect can be played to vehicle and driver and conductor.

In addition, the utility model adopts the structure being arranged with conically shaped 11 outside column 10 to be for the ease of installing location, because if column 10 is designed to pyramidal structure, then need exactissima diligentia embedding precision when burying column 10 underground, once the depth of burying is excessive or too small, then the sheathed height of buffering bracket 30 will off-design requirement.The utility model adopts the form of sheathed conically shaped 11, as long as arrange the lower end and the ground that make conically shaped 11, just can guarantee that each conically shaped 11 protrudes the height on ground identical, thus very easily buffering bracket 30 can be set in the same height and position in distance ground, very convenient installation location, without the need to considering the problem connecting punching and so on.

In a specific embodiment, for the ease of the tool for mounting between conically shaped 11 and column 10 for certain bonding strength, can be provided with a flexible lining 12 in conically shaped 11 inside, preferably this flexible lining 12 can be made up of copper or copper alloy, and preferably it is highly less than the height of conically shaped 11.When conically shaped 11 is arranged on outside column 10, certain pressure can be applied with hammer, make flexible lining 12 that certain distortion occur, thus conically shaped 11 can be made relatively firmly to be connected with column 10, as long as the height of flexible lining 12 is less than the height of conically shaped 11, then flexible lining 12 would not counteract installation.Certainly, those skilled in the art are to be understood that, if the machining accuracy of conically shaped 11 is very high, and the embedding precision of column 11 is also very high, this flexible lining 12 also can omit, just this is difficult to accomplish under normal circumstances, therefore arranges flexible lining 12 and can overcome by very simple structure and manufacture and defect that embedding precision is low, can obtain relatively better bonding strength simultaneously.

Describe the structure of buffering bracket of the present utility model in detail referring to Fig. 3-4, wherein, Fig. 3 display be the top view of the buffering bracket of the guardrail of expressway shown in Fig. 1; Fig. 4 display be the partial exploded perspective view of expressway guardrail according to a specific embodiment of the present utility model, wherein just show buffering bracket and guardrail board.As shown in Figure 3-4, buffering bracket 30 of the present utility model can be made up of rubber, and it has a bellmouth 31 matched with conically shaped 11, and the internal diameter of bellmouth 31 becomes large from top to bottom gradually.

In a specific embodiment, buffering bracket 30 is provided with at least one buckle projection 33 coordinated with the hole clipping 21 in guardrail board 20, and buckle projection 33 has the neck 332 of the minor diameter of a large diameter end 331 and a connecting end portion 331.Corresponding with it, hole clipping 21 has the macropore portion 211 that is greater than end 331, and one is greater than neck 332 and is less than the aperture portion 212 of end 331.When guardrail board 20 is installed on buffering bracket 30, the end 331 of buckle projection 33 is first allowed to pass from macropore portion 211, then allow the neck 332 of buckle projection 33 snap into position, aperture portion 212, thus prevent guardrail board 20 from throwing off from aperture portion 212 by end 331.That is above-mentioned specific embodiment provides simple buckle structure, eliminates the metal connection parts such as bolt.

Further, in order to improve cushion stroke, in a specific embodiment, buffering bracket 30 has a cushion hole 32, and cushion hole 32 is arranged between bellmouth 31 and guardrail board 20.When guardrail board 20 is subject to impacting time, cushion hole 32 can provide the deformation displacement of larger distance, thus can absorb shock kinetic energy further, can play better protection to vehicle and driver and conductor.

In sum, above-mentioned expressway of the present utility model guardrail provides the buffer structure that can move upward, and eliminates the link of whole bolt and so on, substantially increase the buffering deformation stroke of expressway guardrail, avoid the generation of secondary injury, and structure of modification is few, is convenient to install.

Although it will be appreciated by those skilled in the art that the utility model is described according to the mode of multiple embodiment, not each embodiment only comprises an independently technical scheme.So describe in manual be only used to clear for the purpose of; manual should integrally be understood by those skilled in the art, and regards technical scheme involved in each embodiment as the mode that mutually can be combined into different embodiment to understand protection domain of the present utility model.

The foregoing is only the schematic detailed description of the invention of the utility model, and be not used to limit scope of the present utility model.Any those skilled in the art, the equivalent variations done under the prerequisite not departing from design of the present utility model and principle, amendment and combination, all should belong to the scope of the utility model protection.

Claims (3)

1. an expressway guardrail, comprise column (10), guardrail board (20) and the buffering bracket (30) be arranged between described column (10) and described guardrail board (20), it is characterized in that, described column (10) outside is arranged with a conically shaped (11), and the external diameter of described conically shaped (11) becomes large from top to bottom gradually; Described buffering bracket (30) is set in the outside of described conically shaped (11) from the top of described conically shaped (11); Described guardrail board (20) is buckled on described buffering bracket (30); Described buffering bracket (30) has a bellmouth (31) matched with described conically shaped (11), and the internal diameter of described bellmouth (31) becomes large from top to bottom gradually.

2. expressway as claimed in claim 1 guardrail, it is characterized in that, described buffering bracket (30) is provided with at least one buckle projection (33) coordinated with the hole clipping (21) in described guardrail board (20), and described buckle projection (33) has the neck (332) of the minor diameter of a large diameter end (331) and the described end of a connection (331).

3. expressway as claimed in claim 2 guardrail, it is characterized in that, described hole clipping (21) has the macropore portion (211) that is greater than described end (331), and one is greater than described neck (332) and is less than the aperture portion (212) of described end (331).