Steel jointed precast concrete guard rail

Abstract

The utility model provides a kind of steel connecting precast concrete guardrail, comprising: guardrail is reversibly installed on pedestal, and utilizes elastic component to support guardrail.When out-of-control vehicle and guardrail mutually collide, elastic component can absorb the kinetic energy of collision, whereby realizing soft contact between guardrail and out-of-control vehicle.Because it can realize soft contact, compared with the mode of hard contact, out-of-control vehicle and driver will receive smaller reverse acceleration, thereby reducing the probability of driver injury.

Description

Technical Field

[0001] This utility model generally relates to the field of guardrail technology, and specifically to a steel-connected precast concrete guardrail. Background Technology

[0002] The existing guardrail consists of steel posts buried underground and multiple horizontal steel pipes. Its main function is to use a relatively sturdy concrete base as a foundation structure to resist impact, and to use the steel posts and horizontal pipes to contact the out-of-control vehicle, thereby achieving a guiding effect and causing the out-of-control vehicle to stop moving.

[0003] However, existing guardrails are all fixed connection structures, permanently installed on concrete bases. When an out-of-control vehicle collides with the guardrail, there is hard contact between the guardrail and the vehicle. This results in the driver experiencing significant reverse acceleration at the moment of impact, and during the process of the guardrail causing the out-of-control vehicle to decelerate, thus increasing the likelihood of driver injury. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a steel-connected precast concrete guardrail.

[0005] This utility model provides a steel-connected precast concrete guardrail, comprising: Base; A guardrail is provided, which is arranged vertically; the guardrail is hinged to the base via a horizontally extending flip axis, so that the guardrail can rotate relative to the base around the flip axis; an installation space is formed between the base and the guardrail. An elastic component is disposed within the installation space, with one end connected to the base and the other end connected to the guardrail, for providing vertical support to the guardrail under normal conditions; When subjected to a collision, the guardrail can rotate around the flip axis, causing the elastic component to deform; the elastic component absorbs the kinetic energy of the collision through deformation.

[0006] According to the technical solution provided by this utility model, the guardrail has a collision surface and a back surface; The elastic component includes: The first spring rod has one end hinged to the base near the collision surface and the other end hinged to the guardrail near the collision surface. The second spring rod has one end hinged to the base near the back side and the other end hinged to the back side of the guardrail.

[0007] According to the technical solution provided by this utility model, a buffer device is also installed on the collision surface of the guardrail to absorb the collision kinetic energy in advance at the moment of collision.

[0008] According to the technical solution provided by this utility model, the guardrail is provided with through holes; The buffer device includes: A connecting block, wherein the connecting block is disposed on one side of the back of the guardrail; A buffer plate, wherein the buffer plate is disposed on one side of the collision surface of the guardrail; A connecting rod passes through the through hole, with one end fixedly connected to the connecting block and the other end fixedly connected to the buffer plate; An elastic element is sleeved on the connecting rod, with one end abutting against the buffer plate and the other end abutting against the guardrail.

[0009] According to the technical solution provided by this utility model, the guardrail has multiple sections, and an energy-dissipating connector is fixedly connected between adjacent guardrails to buffer the collision kinetic energy between adjacent guardrails.

[0010] According to the technical solution provided by this utility model, the energy-consuming connector includes: A reed tube is provided vertically, and its two sides are fixedly connected to two adjacent guardrails respectively; the reed tube has a first space inside; Two elastic springs are fixedly installed in the first space; the two elastic springs abut against each other to buffer the collision kinetic energy between adjacent guardrails.

[0011] The beneficial effects of this utility model are as follows: The guardrail can be flipped up and mounted on a base, supported by elastic components. When an out-of-control vehicle collides with the guardrail, the elastic components absorb the kinetic energy of the impact, thus achieving soft contact between the guardrail and the out-of-control vehicle. Due to this soft contact, both the out-of-control vehicle and the driver experience less adverse acceleration compared to hard contact, thereby reducing the likelihood of driver injury. Attached Figure Description

[0012] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 A front view of a steel-connected precast concrete guardrail; Figure 2 This is a cross-sectional view of the base; Figure 3 This is a side view of the base; Figure 4 This is a top view of the guardrail; Figure 5 This is a top view of the reed pipe; The components include: 1. Base; 2. Guardrail; 3. First spring rod; 4. Second spring rod; 5. Through hole; 6. Connecting block; 7. Buffer plate; 8. Connecting rod; 9. Elastic element; 10. Spring tube; 11. Elastic spring sheet; 12. Bearing; 13. Flipping shaft; 14. Groove; 15. Rotating groove; 16. Mounting base; 01. Collision surface; 02. Back side. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0014] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0015] refer to Figure 1-2 , Figure 2 This is a cross-sectional view in the main view direction.

[0016] This utility model provides a steel-connected precast concrete guardrail, comprising: Base 1; Guardrail 2 is arranged vertically; guardrail 2 is hinged to base 1 via a horizontally extending flip shaft 13, so that guardrail 2 can be flipped relative to base 1 around the flip shaft 13; an installation space is formed between base 1 and guardrail 2; guardrail 2 has a collision surface 01 and a back surface 02. An elastic component is disposed within the installation space, with one end connected to the base 1 and the other end connected to the guardrail 2, for providing vertical support to the guardrail 2 under normal conditions.

[0017] Specifically, the base 1 has multiple supporting protrusions, and rotating grooves 15 are formed between the multiple supporting protrusions. The guardrail 2 has multiple mounting seats 16 on the edge near the base 1, and each mounting seat 16 has a bearing mounting hole; a bearing 12 is installed in each bearing mounting hole. The outer ring of the bearing 12 is fixedly connected to the bearing mounting hole.

[0018] Multiple mounting bases 16 are respectively disposed in multiple rotating slots 15; a tilting shaft 13 passes through all the support protrusions and through the bearing 12 disposed in the rotating slot 15. The tilting shaft 13 is fixedly connected to the inner ring of the bearing 12.

[0019] Since there is an installation space between the guardrail 2 and the base 1, and the mounting base 16 can rotate relative to the flipping shaft 13 and the base 1 through the bearing, when the guardrail 2 is hit, it can flip around the flipping shaft, causing the elastic component to deform; the elastic component absorbs the kinetic energy of the collision through deformation.

[0020] In this embodiment, an elastic component is used to support the guardrail. When the out-of-control vehicle collides with the guardrail, the elastic component can absorb the kinetic energy of the collision, thereby achieving soft contact between the guardrail and the out-of-control vehicle. Because soft contact is achieved, compared to hard contact, both the out-of-control vehicle and the driver will experience a smaller reverse acceleration, thus reducing the probability of driver injury.

[0021] Preferably, in order to avoid motion interference between the base 1, the mounting seat 16 and the rotating groove 15, the cross-section of the mounting seat 16 is semi-circular, and the top of the base 1 is designed to be arc-shaped.

[0022] Further, refer to Figure 3 The resilient component includes: The first spring rod 3 has one end hinged to the side of the base 1 near the collision surface 01, and the other end hinged to the side of the guardrail 2 near the collision surface 01. The second spring rod 4 has one end hinged to the base 1 near the back 02 side, and the other end hinged to the back 02 side of the guardrail 2.

[0023] Specifically, when no collision occurs, the first spring rod 3 and the second spring rod 4 support the guardrail from both sides and achieve force balance. Since only a small force is needed to keep the guardrail in a vertical state during this process, the first spring rod 3 and the second spring rod 4 are almost in a natural extension and contraction state, with only a small amount of compression or extension.

[0024] When an out-of-control vehicle collides with the guardrail, the guardrail will be subjected to a significant force from the out-of-control vehicle, causing it to flip relative to the base 1. This, in turn, compresses the second spring rod 4 and stretches the first spring rod 3. During this process, part of the kinetic energy of the collision is converted into the elastic potential energy of the first spring rod 3 through stretching, and part is converted into the elastic potential energy of the second spring rod 4 through compression.

[0025] At this point, the guardrail absorbs some of the kinetic energy of the collision and reduces the reaction force on the out-of-control vehicle, thus reducing the magnitude of the reverse acceleration experienced by the driver during the collision and achieving the effect of soft contact during the collision.

[0026] Further, refer to Figure 4The guardrail 2 is also equipped with a buffer device on its collision surface 01 to absorb the kinetic energy of the collision in advance. The guardrail 2 has through holes 5. The buffer device includes: Connecting block 6, which is disposed on the back side 02 of the guardrail 2; Buffer plate 7, the buffer plate 7 is disposed on one side of the collision surface 01 of the guardrail 2; Connecting rod 8 passes through the through hole 5, with one end fixedly connected to the connecting block 6 and the other end fixedly connected to the buffer plate 7; Elastic element 9 is sleeved on the connecting rod 8, with one end abutting against the buffer plate 7 and the other end abutting against the guardrail 2.

[0027] To enhance the buffering effect of guardrail 2, a buffer device is also installed on guardrail 2 in this embodiment.

[0028] Among them, the buffer plate 7 in the buffer device is set on the collision surface 01 side of the guardrail 2, mainly for pre-contact with the out-of-control vehicle.

[0029] The two ends of the connecting rod 8 are fixedly connected to the buffer plate 7 and the connecting block 6 by bolts, and are slidably disposed in the through hole 5 along its extension direction, so that the buffer plate 7 and the connecting block 6 can move relative to the guardrail 2. The elastic element 9 is a spring, which causes the buffer plate 7 to protrude from the surface of the collision surface 01 when no collision occurs, and the connecting block 6 abuts against the back surface 02.

[0030] Before the out-of-control vehicle collides with the guardrail 2, it will make contact with the buffer plate 7 in advance. Since the buffer plate 7, the connecting rod 8 and the connecting block 6 can move relative to the guardrail 2, the buffer plate 7 will compress the elastic element 9 under the action of the out-of-control vehicle, and move the buffer plate 7 closer to the guardrail 2, causing the connecting rod 8 to slide in the through hole 5, and causing the connecting block 6 to move away from the guardrail 2.

[0031] During this process, it can also absorb the kinetic energy of the collision. With the combined action of the elastic components, it can achieve a better buffering effect and further reduce the magnitude of the reverse acceleration experienced by the driver, thereby further reducing the chance of driver injury.

[0032] Preferably, a groove 14 is provided on the collision surface 01 side of the guardrail 2, directly opposite the buffer plate 7. When an out-of-control vehicle collides with the buffer plate 7, the buffer plate 7 is partially embedded in the groove 14.

[0033] Furthermore, there are multiple guardrails 2, and energy-dissipating connectors are fixedly connected between adjacent guardrails 2 to buffer the collision kinetic energy between adjacent guardrails 2.

[0034] refer to Figure 5The power-consuming connector includes: A reed tube 10 is arranged vertically and fixedly connected to two adjacent guardrails 2 on both sides; the reed tube 10 has a first space inside; Two elastic springs 11 are fixedly installed in the first space; the two elastic springs 11 abut against each other to buffer the collision kinetic energy between adjacent guardrails 2.

[0035] To further enhance the kinetic energy absorption function of the guardrail 2, this embodiment also considers the installation of an energy-dissipating connector between adjacent guardrails 2, utilizing the space between the guardrails 2 to strengthen the buffering effect on collision kinetic energy.

[0036] Specifically, both the reed tube 10 and the two elastic springs 11 are deformable. The two elastic springs 11 are fixed inside the reed tube, and their bent parts abut against each other.

[0037] When an out-of-control vehicle collides with a guardrail 2, the kinetic energy is transferred to the adjacent guardrail 2 through the energy dissipation connector. During this process, the impacted guardrail 2 will shift and flip, and the gap between adjacent guardrails 2 will change (it may increase or decrease).

[0038] Once the gap between the guardrails 2 changes, it will compress or stretch the reed tube 10, causing the cross-section of the reed tube 10 to change from a circle to an ellipse. At the same time, the two elastic spring sheets 11 inside it will also deform. Thus, the collision kinetic energy is converted into elastic potential energy between the reed tube 10 and the two elastic spring sheets 11, ultimately achieving the effect of soft contact.

[0039] In summary, when an out-of-control vehicle collides with a precast concrete guardrail with steel connections, the working process of the precast concrete guardrail with steel connections includes: The buffer device first absorbs part of the collision kinetic energy and converts it into the elastic potential energy of the elastic element 9; Consequently, guardrail 2 tilts upon impact, and the elastic component absorbs some of the collision kinetic energy, converting it into elastic potential energy. As guardrail 2 tilts, the distance between it and the adjacent guardrail 2 changes, causing the energy-dissipating connector to deform and further absorb the kinetic energy of the collision.

[0040] Based on the above process, steel-connected precast concrete guardrails can absorb more collision kinetic energy than conventional guardrails, thereby reducing the damage caused by collisions.

[0041] The above description is merely a preferred embodiment of this utility model and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of this utility model is not limited to the specific combination of the above-described technical features, but should also cover other technical solutions formed by any combination of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this utility model.

Claims

1. A steel-connected precast concrete guardrail, characterized in that, include: Base (1); Guardrail (2), the guardrail (2) is set in a vertical direction; the guardrail (2) is hinged to the base (1) by a horizontally extending flip axis, so that the guardrail (2) can flip relative to the base (1) around the flip axis; an installation space is formed between the base (1) and the guardrail (2); An elastic component is disposed within the installation space, with one end connected to the base (1) and the other end connected to the guardrail (2), for providing vertical support to the guardrail (2) under normal conditions; When the guardrail (2) is hit, it can rotate around the flip axis, causing the elastic component to deform; the elastic component absorbs the kinetic energy of the collision through deformation.

2. The steel-connected precast concrete guardrail according to claim 1, characterized in that, The guardrail (2) has a collision surface and a back surface; The elastic component includes: The first spring rod (3) has one end hinged to the base (1) near the collision surface and the other end hinged to the guardrail (2) near the collision surface. The second spring rod (4) has one end hinged to the base (1) near the back side, and the other end hinged to the guardrail (2) on the back side.

3. A steel-connected precast concrete guardrail according to claim 2, characterized in that, The guardrail (2) is also equipped with a buffer device on its collision surface, which is used to absorb the collision kinetic energy in advance at the moment of collision.

4. A steel-connected precast concrete guardrail according to claim 3, characterized in that, The guardrail (2) has through holes (5); The buffer device includes: Connecting block (6), the connecting block (6) is disposed on the back side of the guardrail (2); A buffer plate (7) is provided on one side of the collision surface of the guardrail (2); A connecting rod (8) passes through the through hole (5), with one end fixedly connected to the connecting block (6) and the other end fixedly connected to the buffer plate (7); The elastic element (9) is sleeved on the connecting rod (8), with one end abutting against the buffer plate (7) and the other end abutting against the guardrail (2).

5. A steel-connected precast concrete guardrail according to claim 1, characterized in that, The guardrail (2) has multiple sections, and an energy-dissipating connector is fixedly connected between adjacent guardrails (2) to buffer the collision kinetic energy between adjacent guardrails (2).

6. A steel-connected precast concrete guardrail according to claim 5, characterized in that, The power-dissipating connector includes: A reed tube (10) is arranged vertically and fixedly connected to two adjacent guardrails (2) on both sides; the reed tube (10) has a first space inside; Two elastic springs (11) are fixedly installed in the first space; the two elastic springs (11) abut against each other to buffer the collision kinetic energy between adjacent guardrails (2).

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