Energy-absorbing wave-shaped guardrail

Abstract

The utility model relates to the field of road protection, and discloses an energy absorption type wave-shaped guardrail which comprises a wave-shaped beam, a fixing frame used for installing the wave-shaped beam and an energy absorption assembly arranged between the wave-shaped beam and the fixing frame. The energy absorption assembly comprises a V-shaped support, a connecting shaft, a belleville spring and a locking nut, one end of the V-shaped support is fixedly connected with the wave-shaped beam, the other end of the V-shaped support is welded to the connecting shaft, the connecting shaft penetrates through the fixing frame and is in threaded connection with the locking nut, the belleville spring is arranged on the connecting shaft, and the two ends of the belleville spring abut against the V-shaped support and the fixing frame respectively. The energy absorption assemblies can compress the belleville springs after the wave-shaped beams are impacted, primary energy absorption is achieved, then residual energy is absorbed through deformation of the V-shaped supports, and therefore the energy absorption effect of the guardrail is improved; in addition, compared with a traditional anti-blocking block serving as an energy absorption mechanism, the energy absorption assembly has the advantage that collision force distribution is more uniform.

Description

Technical Field

[0001] The utility model relates to the field of highway protection, in particular to an energy-absorbing corrugated guardrail. Background Art

[0002] The corrugated guardrail is a combined corrugated plate movable steel guardrail used at the opening of the central divider of a highway. When a vehicle collides with it, due to the good anti-collision performance and energy absorption effect of the corrugated steel guardrail plate, it is not easily damaged, and at the same time, it can play a good protective role for the vehicle and the driver and passengers.

[0003] The existing corrugated guardrail mainly consists of columns, anti-collision blocks and corrugated beams. The anti-collision block is an energy-absorbing mechanism, which can make the guardrail gradually deform after being collided, facilitating energy absorption and reducing casualties of passengers. In addition, when the anti-collision block deforms due to collision, it also involves the deformation of adjacent anti-collision blocks, which can distribute the collision force to more span structures, so that the force on the guardrail is more uniform. It can be seen that the energy-absorbing mechanism is the key component for the corrugated guardrail to protect the vehicle and the driver and passengers. Therefore, how to improve the energy absorption effect of the corrugated guardrail is an important research topic for those skilled in the art.

[0004] Based on this, the present application provides an energy-absorbing corrugated guardrail with good energy absorption effect, which can better distribute the impact force to more span structures. Summary of the Utility Model

[0005] The utility model aims to solve the technical problems existing in the prior art. For this purpose, the utility model provides an energy-absorbing corrugated guardrail with good energy absorption effect, which can better distribute the impact force to more span structures.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0007] Provide an energy-absorbing corrugated guardrail, including a corrugated beam, a fixing frame for installing the corrugated beam, and an energy-absorbing component arranged between the corrugated beam and the fixing frame; the energy-absorbing component includes a V-shaped bracket, a connecting shaft, a disc spring and a locking nut. One end of the V-shaped bracket is fixedly connected to the corrugated beam, and the other end is welded to the connecting shaft. The connecting shaft passes through the fixing frame and is screwed with the locking nut. The disc spring is arranged on the connecting shaft, and its two ends respectively abut against the V-shaped bracket and the fixing frame.

[0008] In some optional embodiments, the fixing frame includes two columns arranged in parallel, two cross beams arranged between the two columns for connecting the two columns, and a pull plate arranged between the two cross beams. The connecting shaft passes through the pull plate.

[0009] In some optional embodiments, a pull rod parallel to the connecting shaft is further arranged above and / or below the V-shaped bracket on the connecting shaft. The pull rod passes through the cross beam and is screwed with a tightening nut.

[0010] In some alternative embodiments, the connecting shaft is a hollow shaft.

[0011] In some alternative embodiments, the column is inserted into the concrete pier of the roadbed, and the insertion depth exceeds 1 m.

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

[0013] 1. The energy absorption component designed in the present utility model can compress the disc spring after the corrugated beam is impacted, realizing primary energy absorption, and then absorbing the remaining energy through the deformation of the V-shaped bracket, thereby improving the energy absorption effect of the guardrail;

[0014] 2. During the process of compressing the disc spring, the energy absorption component can transmit the impact force to the adjacent energy absorption components through the corrugated beam, so that the collision force is distributed to more span structures, making the force on the guardrail more uniform. Compared with the traditional energy absorption mechanism using a shock-resistant block, this energy absorption mechanism has a more uniform distribution of collision force and a better energy absorption effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, where:

[0016] Figure 1 is the top view of the energy absorption type corrugated guardrail provided by the present utility model;

[0017] Figure 2 is Figure 1 the A-A cross-sectional view of the energy absorption type corrugated guardrail provided;

[0018] In the drawings, the list of components represented by each reference numeral is as follows:

[0019] 1 - corrugated beam, 2 - energy absorption component, 2.1 - V-shaped bracket, 2.2 - connecting shaft, 2.3 - disc spring, 2.4 - lock nut, 3 - fixing bracket, 3.1 - column, 3.2 - cross beam, 3.3 - pull plate, 4 - concrete pier, 5 - tie rod, 6 - tension nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model; the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of the technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0024] Embodiment 1

[0025] As shown in the attached Figure 1 and the attached Figure 2 figures, this embodiment provides an energy-absorbing corrugated guardrail, which includes a corrugated beam 1, a fixing frame 3 for installing the corrugated beam, and an energy-absorbing component 2 provided between the corrugated beam and the fixing frame.

[0026] The energy absorption component 2 includes a V-shaped bracket 2.1, a connecting shaft 2.2, a disc spring 2.3 and a locking nut 2.4. One end of the V-shaped bracket 2.1 is fixedly connected to the corrugated beam 1, and the other end is welded to the connecting shaft 2.2. The connecting shaft 2.2 passes through the fixing bracket 3 and is screwed with the locking nut 2.4. The disc spring 2.3 is arranged on the connecting shaft 2.2, and its two ends respectively abut against the V-shaped bracket 2.1 and the fixing bracket 3. The energy absorption component designed in this embodiment can compress the disc spring after the corrugated beam is impacted, realizing primary energy absorption, and then absorbing the remaining energy through the deformation of the V-shaped bracket, thereby improving the energy absorption effect of the guardrail; in addition, since the energy absorption component can absorb energy through compression deformation, the collision force can be better distributed to more span structures, so that the guardrail is more evenly stressed. This energy absorption mechanism distributes the collision force more evenly compared with the traditional energy absorption mechanism using a shock-resistant block.

[0027] Preferably, the fixing bracket 3 of this embodiment includes two columns 3.1 arranged in parallel, two cross beams 3.2 arranged between the two columns for connecting the two columns, and a pull plate 3.3 arranged between the two cross beams. The connecting shaft 2.2 passes through the pull plate 3.3. The fixing bracket designed in this embodiment has high structural strength and good stability, and can improve the protection performance of the guardrail.

[0028] Preferably, the connecting shaft 2.2 is a hollow shaft, which can reduce the self-weight of the structure.

[0029] Preferably, the column 3.1 is inserted into the concrete pier 4 of the roadbed, and the insertion depth exceeds 1 m.

[0030] Embodiment 2

[0031] Repeat Embodiment 1. Further, as shown in the appendix Figure 2 As shown, in this embodiment, a pull rod 5 parallel to the connecting shaft is further provided above and / or below the V-shaped bracket 2.1 where the connecting shaft 2.2 is located. The pull rod 5 passes through the cross beam 3.2 and is screwed with a tightening nut 6. This design, on the one hand, ensures the installation stability of the corrugated beam, and on the other hand, can also play a guiding role when the energy absorption component compresses and deforms when being impacted, and can also increase the structural strength of the energy absorption component and improve the protection performance.

[0032] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. An energy-absorbing corrugated guardrail, comprising a corrugated beam and a fixing frame for installing the corrugated beam, characterized in that: It further includes an energy absorption component disposed between the corrugated beam and the fixing frame; The energy absorption component includes a V-shaped bracket, a connecting shaft, a disc spring and a locking nut. One end of the V-shaped bracket is fixedly connected to the corrugated beam, and the other end is welded to the connecting shaft. The connecting shaft passes through the fixing frame and is screwed with the locking nut. The disc spring is disposed on the connecting shaft, and its two ends respectively abut against the V-shaped bracket and the fixing frame.

2. The energy-absorbing corrugated guardrail according to claim 1, wherein: The fixing frame includes two columns arranged in parallel, two cross beams disposed between the two columns for connecting the two columns, and a tension plate disposed between the two cross beams. The connecting shaft passes through the tension plate.

3. The energy-absorbing corrugated guardrail according to claim 1, wherein: A pull rod parallel to the connecting shaft is further provided above and / or below the V-shaped bracket and the connecting shaft. The pull rod passes through the cross beam and is screwed with a tension nut.

4. The energy-absorbing corrugated guardrail according to claim 1, wherein: The connecting shaft is a hollow shaft.

5. The energy-absorbing corrugated guardrail according to claim 2, wherein: The column is inserted into the concrete pier of the roadbed, and the insertion depth exceeds 1m.

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