Prefabricated concrete crash barrier

Abstract

The utility model provides a prefabricated concrete crash barrier, which belongs to the field of highway traffic facilities and comprises a roadbed, a crash barrier and a buffer mechanism. A mounting groove is formed in the surface of the roadbed, an anti-collision fence is arranged at the top of the roadbed, and a sliding block is fixedly connected to the bottom of the anti-collision fence; the installation cavity is formed in the roadbed, the installation hole communicated with the installation groove is formed in the installation cavity, the supporting rod is installed in the installation hole in a sliding mode, the supporting rod is fixedly connected with the crash barrier through the screw rod at one end, and after the crash barrier is impacted, the crash barrier drives the supporting rod to move, so that the crash barrier is prevented from being damaged. When a vehicle collides with the crash barrier, the supporting rod moves towards the interior of the fixing sleeve, the buffer spring is driven by the limiting ring to be compressed, the buffer spring absorbs and dissipates impact force through self deformation, the crash barrier has the buffer effect, and hurt to passengers when the vehicle collides with the crash barrier is reduced.

Description

Technical Field

[0001] The utility model relates to the field of highway traffic facilities, in particular to a prefabricated assembled concrete crash barrier. Background Art

[0002] At present, the concept of rapid, prefabricated green bridge construction has made great progress, and prefabricated bridge structures have developed rapidly. Anti-collision guardrails are an important part of bridges. The anti-collision guardrails of bridges at home and abroad basically adopt the construction technology of on-site steel bar binding and cast-in-place concrete construction. The existing construction process has a long construction period, is time-consuming and labor-intensive, and the construction quality is difficult to control. If the quality cannot meet the requirements of the specifications, it will cause concrete cracking, increase the risk of internal steel corrosion, seriously affect the durability of the guardrail, and ultimately affect the safety of the bridge. The construction waste and noise generated at the construction site conflict with the concept of developing green bridge construction. Among them, a prefabricated and assembled bridge anti-collision guardrail with application number "CN201921027129.6" has a fixed connection method, which is easy to implement standardized installation operations and realize efficient prefabricated bridge construction; it only needs to be hoisted when transported to the site, and it also meets the requirements of green and environmentally friendly construction. However, there is still room for improvement in the use of this anti-collision guardrail: due to the rigid connection between the guardrail and the roadbed, the connection between the guardrail and the roadbed does not have a buffer function. When a car collides with the guardrail, the guardrail cannot further absorb the impact energy, causing certain damage to the people in the car. Utility Model Content

[0003] The purpose of the utility model is to provide a prefabricated assembled concrete crash barrier to solve the problem raised in the above-mentioned background technology that due to the rigid connection between the guardrail and the roadbed, the connection between the guardrail and the roadbed does not have a buffering function, and when a car collides with the guardrail, the guardrail cannot further absorb the impact energy, causing certain injuries to the occupants.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a prefabricated assembled concrete crash barrier, comprising a roadbed, a crash barrier and a buffer mechanism;

[0005] Wherein: a mounting groove is provided on the surface of the roadbed, a crash barrier is provided on the top of the roadbed, a slider is fixedly connected to the bottom of the crash barrier, and the slider slides inside the mounting groove;

[0006] The buffer mechanism includes an installation cavity opened inside the roadbed, the installation cavity is located on both sides of the installation groove, the installation cavity is provided with an installation hole connected with the installation groove, a support rod is slidably installed inside the installation hole, a limit ring is fixedly installed in the middle of the support rod, a buffer spring is installed on the surface of the limit ring, a fixing sleeve is installed inside the installation cavity, the support rod is inserted inside the fixing sleeve, one end of the buffer spring is installed inside the fixing sleeve, one end of the support rod is fixedly connected with a screw rod, and the screw rod is connected to the anti-collision barrier.

[0007] As a preferred solution of the utility model: grooves are provided on both sides of the crash barrier, steel plates are embedded inside the grooves, fixing holes are provided on the surface of the steel plates, and one end of the screw rod passes through the fixing hole and is fixedly connected by a nut.

[0008] As a preferred solution of the utility model: the slotting length of the installation slot is greater than the sliding distance of the support rod in the installation hole.

[0009] As a preferred solution of the utility model: both sides of the top of the crash barrier are connected with hanging rings.

[0010] As a preferred solution of the utility model: connecting holes are provided through both sides of the crash barrier.

[0011] As a preferred solution of the utility model: the surfaces of the screw and the nut are subjected to hot-dip galvanizing treatment.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) An installation cavity is opened inside the roadbed, and an installation hole connected to the installation groove is opened inside the installation cavity. The support rod is slidably installed inside the installation hole. The support rod is fixedly connected to the crash barrier through a screw at one end. When the crash barrier is hit, the crash barrier drives the support rod to move, and the support rod moves into the fixed sleeve, and drives the buffer spring to be compressed through the limit ring. The buffer spring absorbs and dissipates the impact force through its own deformation, so that the crash barrier has a buffering effect, thereby reducing the damage to passengers when the vehicle collides with the crash barrier;

[0014] (2) Grooves are provided on both sides of the crash barrier, steel plates are embedded in the grooves, fixing holes are provided on the surface of the steel plates, screws penetrate the crash barrier and are inserted into the fixing holes and fixedly connected by nuts, so that the crash barrier and the roadbed are installed and connected. When the crash barrier needs to be replaced, the nuts are unscrewed to remove the screws from the inside of the crash barrier. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a side view structural schematic diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the installation structure of the slider of the utility model;

[0018] Figure 4 It is a schematic diagram of the structure of the buffer mechanism of the utility model.

[0019] In the figure: 1. roadbed; 2. installation groove; 3. anti-collision barrier; 31. groove; 32. steel plate; 33. fixing hole; 34. nut; 4. slider; 5. buffer mechanism; 51. installation cavity; 52. installation hole; 53. support rod; 54. limiting ring; 55. buffer spring; 56. fixing sleeve; 57. screw; 6. lifting ring; 7. connecting hole. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 4 A prefabricated assembled concrete crash barrier comprises: a roadbed 1, a crash barrier 3 and a buffer mechanism 5; a mounting groove 2 is provided on the surface of the roadbed 1, a crash barrier 3 is provided on the top of the roadbed 1, a slider 4 is fixedly connected to the bottom of the crash barrier 3, and the slider 4 slides inside the mounting groove 2;

[0022] See also Figure 3 , Figure 4 The buffer mechanism 5 includes an installation cavity 51 opened inside the roadbed 1, the installation cavity 51 is located on both sides of the installation groove 2, a mounting hole 52 connected to the installation groove 2 is opened inside the installation cavity 51, a support rod 53 is slidably installed inside the installation hole 52, a limit ring 54 is fixedly installed in the middle of the support rod 53, a buffer spring 55 is installed on the surface of the limit ring 54, a fixing sleeve 56 is installed inside the installation cavity 51, the support rod 53 is inserted inside the fixing sleeve 56, one end of the buffer spring 55 is installed inside the fixing sleeve 56, one end of the support rod 53 is fixedly connected with a screw 57, and the screw 57 is connected to the crash barrier 3.

[0023] During specific use: an installation cavity 51 is opened inside the roadbed 1, and an installation hole 52 connected with the installation groove 2 is opened inside the installation cavity 51. The support rod 53 is slidably installed inside the installation hole 52. The support rod 53 is fixedly connected to the crash barrier 3 through a screw 57 at one end. When the crash barrier 3 is hit, the crash barrier 3 drives the support rod 53 to move, and the support rod 53 moves toward the inside of the fixed sleeve 56, and drives the buffer spring 55 to be compressed through the limit ring 54. The buffer spring 55 absorbs and dissipates the impact force through its own deformation, so that the crash barrier 3 has a buffering effect, thereby reducing the damage to passengers when the vehicle collides with the crash barrier 3.

[0024] See also Figure 1 , Figure 2 , Figure 3 A groove 31 is provided on both sides of the crash barrier 3 , a steel plate 32 is embedded in the groove 31 , a fixing hole 33 is provided on the surface of the steel plate 32 , and one end of the screw rod 57 passes through the fixing hole 33 and is fixedly connected by a nut 34 .

[0025] During specific use: grooves 31 are opened on both sides of the guardrail 3, steel plates 32 are pre-buried inside the grooves 31, and fixing holes 33 are opened on the surface of the steel plates 32. The screws 57 penetrate the guardrail 3 and are inserted in the fixing holes 33 and are fixedly connected by nuts 34, so that the guardrail 3 and the roadbed 1 are installed and connected. When the guardrail 3 needs to be replaced, the nuts 34 are unscrewed to remove the screws 57 from the inside of the guardrail 3.

[0026] See also Figure 3 , Figure 4 The slot length of the mounting slot 2 is greater than the sliding distance of the support rod 53 in the mounting hole 52 .

[0027] During specific use: when the crash barrier 3 is hit, the crash barrier 3 slides inside the installation groove 2 through the slider 4 at the bottom. The slot length of the installation groove 2 is greater than the distance that the crash barrier 3 drives the support rod 53 to move inside the installation hole 52, thereby satisfying the support rod 53 to drive the buffer spring 55 to the maximum degree of compression and absorb the impact force.

[0028] See also Figure 2 , Figure 3 , both sides of the top of the crash barrier 3 are connected with lifting rings 6.

[0029] When used specifically: the lifting ring 6 installed on the top of the crash barrier 3 is used to lift and transport the crash barrier 3.

[0030] See also Figure 2 , connection holes 7 are provided on both sides of the crash barrier 3 .

[0031] When in use, connection holes 7 are provided on both sides of the crash barrier 3 , so as to facilitate connection with adjacent crash barriers 3 through the connection holes 7 .

[0032] See also Figure 4 The surfaces of the screw rod 57 and the nut 34 are hot-dip galvanized.

[0033] When used specifically, the screw rod 57 and the nut 34 are hot-dip galvanized to provide them with better resistance to oxidation and corrosion.

[0034] An installation cavity 51 is provided inside the roadbed 1, and an installation hole 52 connected to the installation groove 2 is provided inside the installation cavity 51. The support rod 53 is slidably installed inside the installation hole 52. The support rod 53 is fixedly connected to the crash barrier 3 through a screw 57 at one end. When the crash barrier 3 is hit, the crash barrier 3 drives the support rod 53 to move, and the support rod 53 moves into the fixed sleeve 56, and drives the buffer spring 55 to be compressed through the limit ring 54. The buffer spring 55 absorbs and dissipates the impact force through its own deformation, so that the crash barrier 3 has a buffering effect, thereby reducing the damage to passengers when the vehicle collides with the crash barrier 3.

[0035] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for technical personnel in the field to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A prefabricated concrete crash barrier, characterized in that: include: A roadbed (1), wherein a mounting groove (2) is provided on the surface of the roadbed (1), a crash barrier (3) is provided on the top of the roadbed (1), a slider (4) is fixedly connected to the bottom of the crash barrier (3), and the slider (4) slides inside the mounting groove (2); A buffer mechanism (5), the buffer mechanism (5) comprising an installation cavity (51) provided inside the roadbed (1), the installation cavity (51) being located on both sides of the installation groove (2), the installation cavity (51) being provided with an installation hole (52) communicating with the installation groove (2), a support rod (53) being slidably installed inside the installation hole (52), a limit ring (54) being fixedly installed in the middle of the support rod (53), a buffer spring (55) being installed on the surface of the limit ring (54), a fixing sleeve (56) being installed inside the installation cavity (51), the support rod (53) being inserted inside the fixing sleeve (56), one end of the buffer spring (55) being installed inside the fixing sleeve (56), one end of the support rod (53) being fixedly connected with a screw rod (57), and the screw rod (57) being connected to the crash barrier (3).

2. The prefabricated concrete crash barrier according to claim 1, characterized in that: Grooves (31) are provided on both sides of the crash barrier (3), a steel plate (32) is embedded in the groove (31), a fixing hole (33) is provided on the surface of the steel plate (32), one end of the screw rod (57) passes through the fixing hole (33) and is fixedly connected by a nut (34).

3. The prefabricated concrete crash barrier according to claim 1, characterized in that: The slotting length of the installation slot (2) is greater than the sliding distance of the support rod (53) in the installation hole (52).

4. The prefabricated concrete crash barrier according to claim 1, characterized in that: Both sides of the top of the crash barrier (3) are connected with hanging rings (6).

5. The prefabricated concrete crash barrier according to claim 1, characterized in that: Connection holes (7) are provided through both sides of the crash barrier (3).

6. The prefabricated concrete crash barrier according to claim 1, characterized in that: The surfaces of the screw rod (57) and the nut (34) are subjected to hot-dip galvanizing treatment.

Images