Prefabricated bridge anti-collision guardrail

Abstract

The utility model discloses a prefabricated bridge anti-collision guardrail, which belongs to the related technical field of prefabricated bridges and comprises a base, a guardrail body and an anti-collision structure. The base has corresponding supporting force; the guardrail body is in a multi-half splicing type, the bottom of the guardrail body is connected to the base, and the guardrail body has corresponding supporting force. The anti-collision structure comprises anti-collision air bags which are installed on the anti-collision working face of the guardrail body and distributed on the corresponding splice plates of the guardrail body respectively, and the adjacent anti-collision air bags are communicated through communicating guide pipes. The supporting plate is located in the anti-collision air bag and can abut against the anti-collision working face of the anti-collision air bag. The sliding supporting assembly is arranged on the rear side of the anti-collision working face of the guardrail body and connected with the supporting plate through a sliding column, the sliding column movably penetrates through the guardrail body, and through the structure, the connecting points of the guardrail body and the base are increased, the stability of connection with the base is improved, and the performance of the whole device for coping with large impact force is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to prefabricated bridges, and in particular relates to an anti-collision guardrail for a prefabricated bridge. Background Art

[0002] At present, the concept of rapid and prefabricated green bridge construction has made great progress, and prefabricated bridge structures have developed rapidly. Anti-collision guardrails are an important part of bridges.

[0003] Existing prefabricated bridge guardrails are generally single-layer protection. When a vehicle loses control, it directly hits the hard guardrail, causing serious damage to the vehicle. In addition, the protection of a single-layer guardrail is limited and can withstand less vehicle impact force. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a prefabricated bridge anti-collision guardrail to solve the above problems.

[0005] The technical solution adopted by the utility model is as follows: a prefabricated bridge anti-collision guardrail, comprising a base, a guardrail body and an anti-collision structure; the base has a corresponding supporting force; the guardrail body is mostly spliced, and the bottom is connected to the base, and has a corresponding supporting force; the anti-collision structure includes an anti-collision airbag, which is installed on the anti-collision working surface of the guardrail body, and is respectively distributed on the corresponding splicing plates of the guardrail body, and the adjacent anti-collision airbags are connected by a connecting duct; a support plate is located inside the anti-collision airbag and can abut against the anti-collision working surface of the anti-collision airbag; a sliding support assembly is arranged on the rear side of the anti-collision working surface of the guardrail body, and is connected to the support plate through a sliding column, and the sliding column movably passes through the guardrail body.

[0006] Furthermore, a restraint strip is installed on the anti-collision working surface of the anti-collision airbag, and the restraint strip has a corresponding restraint force to limit the deformation of the anti-collision airbag to both sides.

[0007] Furthermore, the base forms a guide step on one side of the anti-collision working surface, and the top end of the guide step forms a predetermined arc with the anti-collision working surface.

[0008] Furthermore, the sliding support assembly includes a sliding tube fixed on the rear side of the sliding connection between the sliding column and the guardrail body, and one end of the sliding column is slidably arranged in the sliding tube; a support spring is arranged in the sliding tube and abuts against the corresponding end of the sliding column.

[0009] Furthermore, one end of the sliding tube away from the guardrail body is fixed to a limiting plate, and the bottom of the limiting plate is plugged into the base.

[0010] Furthermore, a fixing plate that fits on the base support working surface is set at a corresponding position on the side of the guardrail body, and corresponding installation holes are opened on the fixing plate, and corresponding fixing holes are opened at corresponding positions on the base support working surface; mutually matching plug rods and plug sleeves are set between the splicing plates of the guardrail body.

[0011] Furthermore, through holes for long rods to pass through are provided at the upper and lower parts of the guardrail body along the splicing direction of the guardrail body.

[0012] After adopting the above structure, the beneficial effects of the utility model are as follows: a prefabricated bridge anti-collision guardrail proposed by the utility model, through the anti-collision structure set up, first utilizes the deformation of the anti-collision airbag and the support spring to absorb energy and unload force, thereby reducing the impact force and reducing the damage caused by the hard impact on the vehicle; through the connection between the bottom of the guardrail body and the base, the connection between the side fixing plate of the guardrail body and the base, and the connection between the limit plate and the base, the connection points between the guardrail body and the base are increased, the stability of the connection with the base is improved, and the overall performance of the improvement device in coping with larger impact forces. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0014] Figure 1 This is a schematic diagram of the overall structure of a prefabricated bridge anti-collision guardrail proposed by the utility model;

[0015] Figure 2 A cross-sectional view of a prefabricated bridge anti-collision guardrail proposed by the utility model;

[0016] Figure 3 This is a cross-sectional view from another angle of a prefabricated bridge anti-collision guardrail proposed by the utility model;

[0017] Figure 4 This is a schematic diagram of the overall structure from another angle of a prefabricated bridge anti-collision guardrail proposed by the utility model.

[0018] In the attached drawings: 1. base, 2. guardrail body, 3. anti-collision airbag, 4. connecting duct, 5. support plate, 6. restraint strip, 7. guide step, 8. sliding tube, 9. sliding column, 10. support spring, 11. limit plate, 12. fixing plate, 13. through hole, 14. plug-in rod, 15. plug-in sleeve. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0021] Example 1

[0022] like Figure 1-4 As shown, a prefabricated bridge anti-collision guardrail comprises three parts: a base 1, a guardrail body 2 and an anti-collision structure; the base 1 has a corresponding supporting force; the guardrail body 2 is mostly spliced, and the bottom is connected to the base 1, and has a corresponding supporting force. The base 1 forms a guide step 7 on one side of the anti-collision working surface, and the top of the guide step 7 forms a predetermined arc with the anti-collision working surface; the anti-collision mechanism is arranged on the anti-collision working surface of the guardrail body 2; wherein the guardrail body 2 can be formed by splicing a plurality of splicing plates, and in order to ensure the stable cooperation between the guardrail body 2 and the base 1, a plurality of splicing plates are provided at the corresponding positions on the supporting working surface of the base 1 Positioning grooves, preferably, there are two splicing plates, and the corresponding positioning grooves are set to two. The splicing plate is inserted into the positioning groove through the positioning block at the bottom. In addition, a fixing plate 12 is set on the side wall of the splicing plate, and the position of the fixing plate 12 is set to be able to fit on the supporting working surface of the base 1, and the fixing plate 12 has a mounting hole, and a fixing hole is set at the corresponding position of the supporting working surface of the base 1, and the splicing plate and the base 1 are further fixed by bolts and screws; further, the adjacent side walls of the two splicing plates are respectively equipped with matching plug-in rods 14 and plug-in sleeves 15 to realize splicing to form the guardrail body 2. At corresponding positions on the upper and lower parts of the splicing plates, through holes 13 are provided along the splicing direction to penetrate the splicing plates. When installing the guardrail, the upper parts of adjacent guardrail bases 1 are connected, and according to actual needs, the long rods passing through the through holes 13 can pass through a corresponding number of guardrail bodies 2, and multiple guardrail bodies 2 are connected in series to form a group. Fixing plates can be welded to both ends of the long rods of a group of guardrail bodies 2 and fixing holes can be provided, and a detachable connection can be made between the long rods of an adjacent group of guardrail bodies 2, so that the damaged corresponding guardrail can be easily replaced and installed.

[0023] Example 2

[0024] On the basis of Example 1, the anti-collision structure includes an anti-collision airbag 3, which is installed on the anti-collision working surface of the guardrail body 2 and is respectively distributed on the corresponding splicing plates of the guardrail body 2. The adjacent anti-collision airbags 3 are connected through a connecting duct 4. Here, it should be noted that two unidirectional connecting ducts 4 can be set between the adjacent anti-collision airbags 3. The connecting duct 4 guides the airflow from one anti-collision airbag 3 to another anti-collision airbag 3, and the connecting duct 4 guides the airflow in the opposite direction to the connecting duct 4. In addition, the connecting ducts between the adjacent anti-collision airbags are sleeved, and can be connected through the sleeve connection when the guardrail body is assembled; a support plate 5 is located inside the anti-collision airbag 3 and can be abutted on the anti-collision working surface of the anti-collision airbag 3; a sliding support assembly is arranged on the rear side of the anti-collision working surface of the guardrail body 2, and is connected to the support plate 5 through a sliding column 9, and the sliding column 9 movably penetrates the guardrail body 2. The anti-collision working surface of the anti-collision airbag 3 is equipped with a restraint strip 6, and the restraint strip 6 has a corresponding restraining force to limit the deformation of the anti-collision airbag 3 to both sides. Specifically, the sliding support assembly includes a sliding tube 8, which is fixed on the rear side of the sliding connection between the sliding column 9 and the guardrail body 2, and one end of the sliding column 9 is slidably arranged in the sliding tube 8; a support spring 10, which is arranged in the sliding tube 8 and abuts against the corresponding end of the sliding column 9. When the guardrail is hit, the anti-collision airbag 3 is first squeezed and deformed, and the constraint strip 6 limits the deformation of the anti-collision airbag 3 to both sides, further eliminating the impact force, and the anti-collision airbag 3 deforms toward the guardrail body 2, squeezing the support plate 5, and then pushing the sliding column 9 to squeeze the support spring 10 into the sliding tube 8 (in the initial state, the support spring 10 presses the support plate 5 against the inner wall of the anti-collision airbag 3); when the impacted anti-collision airbag 3 is deformed, the airflow enters the adjacent anti-collision airbag 3 through the corresponding one-way connecting conduit 4, and the adjacent anti-collision airbag 3 returns the airflow to the impacted airbag through the corresponding one-way connecting conduit 4, and when the deformation stroke remains unchanged, the speed of deformation of the anti-collision airbag 3 caused by the impact force is reduced.

[0025] In addition, one end of the sliding tube 8 away from the guardrail body 2 is fixed to the limit plate 11, and the bottom of the limit plate 11 is inserted into the base 1, which increases the connection points between the guardrail body 2 and the base 1, making the whole formed by the guardrail body 2 and the base 1 more stable.

[0026] When in use, in the initial state, the splicing plates are separated from each other, and the base 1 is separated from the guardrail body 2; the adjacent splicing plates are spliced ​​together to form the guardrail body 2; the guardrail body 2 is stably connected to the base 1 through multiple insertions and corresponding bolt connections; multiple guardrail bodies 2 can also be connected by long rods passing through the through holes 13 to improve the stability of the overall device during collision prevention;

[0027] When the guardrail is hit, the vehicle tire will first be restricted by the guide step 7, causing a brief force unloading pause; the vehicle impact squeezes the corresponding anti-collision airbag 3, and the airflow in the anti-collision airbag 3 can flow back after being squeezed out, and the constraint strip 6 limits the deformation of the anti-collision airbag 3 to both sides, thereby reducing the deformation speed of the anti-collision airbag 3. At the same time, the support spring 10 is squeezed to form a reverse working force, which further unloads the impact force of the vehicle. Therefore, through the stable whole of the guardrail body 2 and the base 1, the connection between multiple guardrails (connected by a long rod to form a group) and the unloading of the above-mentioned anti-collision mechanism, the guardrail has good anti-collision performance.

[0028] Although the embodiments of the utility model have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the attached claims and their equivalents. In short, if those skilled in the art are inspired by them and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the scope of protection of the utility model.

Claims

1. A prefabricated bridge anti-collision guardrail, characterized in that: include: The base has corresponding supporting force; The guardrail body is mostly spliced, with the bottom connected to the base and having corresponding support; The anti-collision structure includes an anti-collision airbag, which is installed on the anti-collision working surface of the guardrail body and is respectively distributed on the corresponding splicing plates of the guardrail body. The adjacent anti-collision airbags are connected by a connecting duct; a support plate is located inside the anti-collision airbag and can be abutted against the anti-collision working surface of the anti-collision airbag; a sliding support assembly is arranged on the rear side of the anti-collision working surface of the guardrail body, connected to the support plate through a sliding column, and the sliding column moves through the guardrail body.

2. The prefabricated bridge anti-collision guardrail according to claim 1 is characterized in that: The anti-collision working surface of the anti-collision airbag is equipped with a restraint strip, and the restraint strip has a corresponding restraint force to limit the deformation of the anti-collision airbag to both sides.

3. The prefabricated bridge anti-collision guardrail according to claim 1 is characterized in that: The base forms a guide step on one side of the anti-collision working surface, and the top end of the guide step forms a predetermined arc with the anti-collision working surface.

4. The prefabricated bridge anti-collision guardrail according to claim 1 is characterized in that: The sliding support assembly includes a sliding tube fixed on the rear side of the sliding connection between the sliding column and the guardrail body, one end of the sliding column is slidably arranged in the sliding tube; a support spring is arranged in the sliding tube and abuts against the corresponding end of the sliding column.

5. The prefabricated bridge anti-collision guardrail according to claim 4 is characterized in that: A limiting plate is fixed to one end of the sliding tube away from the guardrail body, and the bottom of the limiting plate is plugged into the base.

6. The prefabricated bridge anti-collision guardrail according to claim 1, characterized in that: A fixing plate that fits on the base support working surface is set at the corresponding position of the side of the guardrail body, and the fixing plate has corresponding installation holes, and corresponding fixing holes are set at the corresponding positions of the base support working surface; matching plug rods and plug sleeves are set between the splicing plates of the guardrail body.

7. The prefabricated bridge anti-collision guardrail according to claim 1, characterized in that: The upper part and the lower part of the guardrail body are provided with through holes for the long rod to pass through along the splicing direction of the guardrail body.

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