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

Expressway guardrail

Technical Field

The utility model relates to a traffic safety protection technology, especially a highway guardrail that has buffer structure for highway and so on.

Background

An expressway guardrail such as an expressway guardrail is a main form of a semi-rigid guardrail, and is a continuous structure in which corrugated guardrail plates are spliced with each other and supported by pillars. When the vehicle collides with the guardrail plate, the guardrail plate has good collision resistance and an energy absorption function, so that the guardrail plate is not easy to be damaged by collision, and can well protect the vehicle and drivers and passengers. The protection principle of the highway guardrail is that the deformation of the soil foundation, the upright post and the guardrail plate is utilized to absorb collision energy, and an out-of-control vehicle is forced to change the direction and return to a normal running direction, so that the vehicle is prevented from rushing out of the highway, the vehicle and passengers are protected, and the loss caused by accidents is reduced.

Fig. 1 shows a typical structure of a highway barrier comprising a post 10, a corrugated balustrade panel 20, and a buffer bracket 30 disposed between the post 10 and the balustrade panel 20, wherein the buffer bracket 30 is fixed to the post 10 by bolts, and the balustrade panel 20 is fixed to the buffer bracket 30 by bolts. The buffer bracket 30 is a cylindrical or polygonal thin-walled energy-absorbing structure made of galvanized steel sheet, and when collision occurs, the buffer bracket 30 absorbs a part of collision energy through forced deformation.

The highway guardrail with the typical structure can only provide deformation energy absorption in the horizontal direction when being collided due to the bolt fixed connection, and particularly provides deformation with limited travel only by the buffer bracket 30 at the position of the upright post 10, so that the buffer protection effect has certain defects.

Chinese patent application CN 200480025123.5 discloses an expressway guardrail which provides an elastic body made of rubber to replace the buffer bracket shown in fig. 1, and the elastic body is designed with a horizontally arranged trapezoid opening with a narrow top and a wide bottom. This prior art claims that the elastomer can be from up down to the motion of warping when receiving the impact to drive the guardrail board through the elastomer and move upwards, can obtain the deformation of bigger stroke, the energy-absorbing effect is better. However, in practice, since the trapezoid opening is a structure with a narrow upper part and a wide lower part, the upper part of the elastic body is made of more material and therefore more rigid, and the lower part of the elastic body is made of less material and less rigid, so that the lower part of the elastic body deforms more when being impacted, the whole structure moves downwards instead of upwards, and finally the guardrail plate moves towards the ground without achieving the purpose of protection.

In addition, in the prior art, the buffer bracket, the elastic body, the guardrail plate and the like are fixed on the upright post through connecting structures such as bolts, and when a violent collision occurs, the metal connecting parts can fall off and fly out, and even hit vehicles running in opposite directions, so unexpected results are caused.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an expressway guardrail to reduce or avoid the aforementioned problem.

Particularly, the utility model provides a highway guardrail, this highway guardrail provide a but buffer structure of upward movement, have got rid of the adapting unit of whole bolts class, have improved the buffering deformation stroke of highway guardrail greatly, have avoided the emergence of secondary injury, and the institutional advancement is few, the installation of being convenient for.

In order to solve the technical problem, the utility model provides a highway guardrail, which comprises a stand column, a corrugated guardrail plate and a buffer bracket arranged between the stand column and the guardrail plate, wherein a conical cylinder is sleeved outside the stand column, and the outer diameter of the conical cylinder is gradually increased from top to bottom; the buffering bracket is sleeved on the outer side of the conical cylinder from the upper part of the conical cylinder; the guardrail plate is buckled on the buffering bracket, the buffering bracket is provided with a tapered hole matched with the tapered cylinder, and the inner diameter of the tapered hole is gradually increased from top to bottom.

Preferably, the buffering bracket is provided with at least one snap projection which is matched with the snap hole on the guardrail plate, and the snap projection is provided with an end part with a large diameter and a neck part with a small diameter which is connected with the end part.

Preferably, the card hole has a large hole portion larger than the end portion and a small hole portion larger than the neck portion and smaller than the end portion.

The utility model discloses an above-mentioned highway guardrail provides the buffer structure that can the upward movement, has got rid of the adapting unit of whole bolts class, has improved the buffering deformation stroke of highway guardrail greatly, has avoided the emergence of secondary injury, and the institutional transformation is few, is convenient for install.

Drawings

The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein,

FIG. 1 is a schematic illustration of a typical highway barrier construction;

fig. 2 is a schematic structural view of a highway barrier according to an embodiment of the present invention;

FIG. 3 shows a top view of a buffer carriage of the highway barrier of FIG. 1;

fig. 4 shows a partially exploded perspective view of a highway barrier according to an embodiment of the present invention, in which only a buffering bracket and a barrier plate are shown.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings. Wherein like parts are given like reference numerals.

Just as the background art part, the utility model provides an improve highway guardrail of structure, fig. 2 shows the structure schematic diagram according to the utility model discloses a highway guardrail of embodiment, as shown in the drawing, the utility model discloses a highway guardrail includes stand 10, corrugated guardrail plate 20 and set up the buffer bracket 30 between stand 10 and guardrail plate 20, is different with fig. 1, the utility model discloses the cover is equipped with a cone 11 in the stand 10 outside, and cone 11's external diameter is by last grow gradually down, that is the utility model discloses need not to change current stand structure, only need to sheathe in the outside of stand 10 and install a cone 11 can.

After the tapered tube 11 is sleeved outside the upright post 10, the existing buffer bracket needs to be modified to a form that can be matched with the tapered tube 11, and the detailed structure thereof is shown in fig. 3-4. The buffer bracket 30 is sleeved on the outer side of the conical barrel 11 from the upper part of the conical barrel 11; the guardrail plate 20 is snapped onto the bumper bracket 30.

The utility model provides an above-mentioned highway guardrail, the form that its major structure all adopted the cover to establish or the buckle has got rid of the adapting unit of all bolts and so on among the prior art to can not produce the metal connecting part who drops when bumping, avoided the emergence of secondary injury, and the institutional transformation is few, the installation of being convenient for. Most importantly, the utility model discloses a buffering bracket 30 is established in the outside of a toper section of thick bamboo from the top cover of a toper section of thick bamboo 11, and when the striking takes place, buffering bracket 30 can be along the surface rebound of a toper section of thick bamboo 11 to but provide upward movement's buffer structure, improved the buffering deformation stroke of highway guardrail greatly, can absorb more striking kinetic energy, can play better guard action to vehicle and driver and crew.

In addition, the utility model discloses a structure of being equipped with a toper section of thick bamboo 11 outside stand 10 cover is for the convenience of installation location, because if designing stand 10 into the toper structure, then need pay close attention to when burying underground stand 10 underground and bury precision underground, in case bury underground the degree of depth too big or undersize, then the cover of buffer bracket 30 establishes the height and will deviate the designing requirement. The utility model discloses a form of a toper section of thick bamboo 11 is established to the cover, as long as set up the lower extreme that makes a toper section of thick bamboo 11 and meet with ground, just can ensure the height on each toper section of thick bamboo 11 protrusion ground the same to can be very convenient establish buffering bracket 30 cover apart from the same high position in ground, very easy to assemble location need not to consider to connect the problem of punching the class.

In a specific embodiment, in order to facilitate the installation of the tapered cylinder 11 and the upright column 10 with a certain connection strength, a flexible liner 12 may be disposed inside the tapered cylinder 11, and preferably, the flexible liner 12 may be made of copper or copper alloy, and preferably, the height thereof is smaller than the height of the tapered cylinder 11. When the tapered tube 11 is mounted on the outside of the column 10, a certain pressure is applied by a hammer to deform the flexible liner 12 to a certain extent, so that the tapered tube 11 can be relatively firmly connected to the column 10, and the flexible liner 12 does not interfere with the mounting as long as the height of the flexible liner 12 is smaller than that of the tapered tube 11. Of course, it will be understood by those skilled in the art that if the machining accuracy of the tapered cylinder 11 is high and the burying accuracy of the column 11 is also high, the flexible liner 12 can be omitted, which is difficult to achieve in the usual case, so that the provision of the flexible liner 12 can overcome the disadvantage of the low manufacturing and burying accuracy with a simple structure, while obtaining a relatively better joint strength.

The structure of the buffer bracket of the present invention will be described in detail with reference to fig. 3-4, wherein fig. 3 shows a top view of the buffer bracket of the highway guardrail shown in fig. 1; fig. 4 shows a partially exploded perspective view of a highway barrier according to an embodiment of the present invention, in which only a buffering bracket and a barrier plate are shown. As shown in fig. 3-4, the buffer bracket 30 of the present invention may be made of rubber, and has a tapered hole 31 for engaging with the tapered barrel 11, and the inner diameter of the tapered hole 31 is gradually increased from top to bottom.

In one embodiment, the buffering bracket 30 is provided with at least one catching protrusion 33 engaged with the catching hole 21 of the balustrade panel 20, and the catching protrusion 33 has a large diameter end portion 331 and a small diameter neck portion 332 connecting the end portions 331. Correspondingly, the card hole 21 has a large hole portion 211 larger than the end portion 331 and a small hole portion 212 larger than the neck portion 332 and smaller than the end portion 331. When the balustrade panel 20 is mounted on the buffer bracket 30, the end portion 331 of the catch projection 33 is first passed through the large hole portion 211, and then the neck portion 332 of the catch projection 33 is caught at the small hole portion 212, so that the balustrade panel 20 is prevented from being detached from the small hole portion 212 by the end portion 331. That is, the above-described embodiment provides a simple snap structure, omitting a metal connecting member such as a bolt.

Further, to increase the buffering stroke, in one embodiment, the buffering bracket 30 has a buffering hole 32, and the buffering hole 32 is disposed between the tapered hole 31 and the balustrade panel 20. When the guardrail plate 20 is impacted, the buffer holes 32 can provide deformation displacement at a larger distance, so that the impact kinetic energy can be further absorbed, and the vehicle and the drivers and passengers can be better protected.

To sum up, the utility model discloses an above-mentioned highway guardrail provides but upward movement's buffer structure, has got rid of the adapting unit of whole bolts class, has improved the buffering deformation stroke of highway guardrail greatly, has avoided the emergence of secondary injury, and the institutional advancement is few, the installation of being convenient for.

It is to be understood by those skilled in the art that while the present invention has been described in terms of several embodiments, it is not intended that each embodiment cover a separate embodiment. The description is given for clearness of understanding only, and it is to be understood that all matters in the embodiments are to be interpreted as including all technical equivalents which are encompassed by the claims.

The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations that may be made by those skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention.

Claims (3)

1. A highway guardrail comprises a vertical column (10), a guardrail plate (20) and a buffer bracket (30) arranged between the vertical column (10) and the guardrail plate (20), and is characterized in that a conical cylinder (11) is sleeved on the outer side of the vertical column (10), and the outer diameter of the conical cylinder (11) is gradually increased from top to bottom; the buffering bracket (30) is sleeved on the outer side of the conical barrel (11) from the upper part of the conical barrel (11); the guardrail plate (20) is fastened on the buffer bracket (30); the buffer bracket (30) is provided with a tapered hole (31) matched with the tapered barrel (11), and the inner diameter of the tapered hole (31) is gradually increased from top to bottom.

2. An expressway guardrail according to claim 1, wherein the buffering bracket (30) is provided with at least one snap projection (33) engaged with the snap hole (21) of the guardrail plate (20), the snap projection (33) having an end portion (331) with a large diameter and a neck portion (332) with a small diameter connecting the end portion (331).

3. An expressway guardrail according to claim 2, wherein the clamp hole (21) has a large hole portion (211) larger than the end portion (331) and a small hole portion (212) larger than the neck portion (332) and smaller than the end portion (331).