Guardrail structure with multi-stage buffering function

Abstract

The utility model discloses a guardrail structure with multi-stage buffering, which relates to the field of buffering guardrails, and adopts the technical scheme that the guardrail structure comprises a supporting seat and a stress piece, and the stress piece is connected with the supporting seat in a sliding manner; the elastic damper is arranged on the stress piece; the hydraulic damper is arranged on the supporting seat and is connected with the stress piece; the force bearing piece is used for bearing impact force and moves in the axial direction of the supporting seat when bearing the impact force, the elastic damper and the hydraulic damper sequentially bear the impact force for buffering and energy absorption, the elastic damper elastically deforms when absorbing energy, and the multi-stage buffering and energy absorption device has the effects of conducting multi-stage buffering and energy absorption on impact and reducing impact damage.

Description

Technical Field

[0001] This utility model relates to the field of buffer guardrail technology, and more specifically to a guardrail structure with multi-level buffering. Background Technology

[0002] Traffic barriers are safety facilities used to separate traffic lanes, primarily separating motor vehicle and non-motor vehicle lanes, and providing some protection in the event of a traffic hazard. Existing traffic barriers include fixed and shock-absorbing types. Fixed barriers are anchored to the ground to form rigid protection, while shock-absorbing barriers deform upon impact to absorb energy and reduce injuries caused by collisions.

[0003] Based on the prior art, the applicant developed and improved upon the invention patent with publication number CN118422619A, which discloses a traffic barrier with a buffer function, based on the existing patent with publication number CN212772094U. This invention discloses an anti-collision traffic barrier end, which includes a fixed part for fixed connection with the road and the barrier, and also includes a movable part and an energy-absorbing buffer structure. The fixed part and the movable part are respectively connected to and support the two ends of the energy-absorbing buffer structure. The energy-absorbing buffer structure includes at least one buffer device with a retractable structure. When a vehicle hits the movable part, the buffer device retracts and provides buffer force to the vehicle.

[0004] However, in practical application feedback, the applicant found that the impact speed should not be too high when using a single-stage hydraulic buffer for energy absorption. Actual testing revealed that because forces are reciprocal and the hydraulic buffer has a fast energy absorption response, when the speed exceeds the test threshold, the impact force increases instantaneously, essentially impacting a rigid structure and easily causing injury. When the speed is within the test threshold range, the hydraulic buffer can quickly and safely absorb energy, providing impact protection. Simultaneously, the applicant conducted similar simulation tests on publicly available deformation buffer barriers, and the test results were similar to those in the applicant's prior application.

[0005] Therefore, it is particularly important to design an effective and stable energy-absorbing buffer device for impacts. This application makes changes based on prior applications and existing technologies and implements multi-stage buffering to improve the impact velocity range that can absorb energy. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a guardrail structure with multi-level buffering, which can absorb energy through multiple levels of impact and reduce impact damage.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A guardrail structure with multi-level buffering includes:

[0009] Support base;

[0010] The force-bearing component is slidably connected to the support base;

[0011] An elastic damper is disposed on a force-bearing component;

[0012] A hydraulic damper is mounted on a support base and connected to a force-bearing component;

[0013] The force-bearing component is used to withstand impact force and moves along the axial direction of the support seat when subjected to impact force. The elastic damper and the hydraulic damper absorb the impact force in sequence and the elastic damper undergoes elastic deformation when absorbing energy.

[0014] As a further improvement of this utility model, the elastic damper disposed on the force-bearing component includes, but is not limited to, one, two or more.

[0015] As a further improvement to this utility model, it also includes:

[0016] A deformation support is disposed between the force-bearing component and the support base, and is connected to both the force-bearing component and the support base respectively;

[0017] When the force-bearing component moves along the axial direction of the support base, it causes the deformation support to deform, and when the force-bearing component resets, it causes the deformation support to recover.

[0018] As a further improvement of this utility model, a partition is provided on the force-bearing component along the direction of impact movement.

[0019] As a further improvement of this utility model, a guide member is connected to the partition member, and the deformation support member is slidably connected to the guide member. The guide member is used to guide and support the deformation support member when it deforms.

[0020] As a further improvement of this utility model, the deformation support includes a node and at least two struts, with the two struts rotatably connected at the node so that the two struts form an intersecting and stress-deformed structure.

[0021] As a further improvement of this utility model, the elastic damper is disposed outside or inside the force-bearing component.

[0022] As a further improvement of this utility model, when the elastic damper is disposed outside the force-bearing member, the elastic damper includes one end and / or both ends acting on the partition member.

[0023] As a further improvement of this utility model, a storage seat is connected to the side of the support base away from the force-bearing component, and a storage cavity for moving the force-bearing component is formed in the storage seat.

[0024] As a further improvement to this utility model, it also includes:

[0025] The ground rail is fixed to the ground by ground anchors. The support base is fixedly connected to the ground rail. A limiter is provided between the force-bearing component and the ground rail. When the force-bearing component moves axially along the support base under impact force, the limiter is used to restrict the force-bearing component from sliding on the ground rail.

[0026] The beneficial effects of this utility model are:

[0027] 1. By setting a force-bearing component that can slide and connect with the support base, and setting an elastic damper between the force-bearing component and the support base, the force-bearing component is moved along the support base when it is impacted, and the elastic damper is driven to provide elastic force to form a buffer to absorb energy from the impact. Due to the characteristics of elastic force, the impact speed is increased when providing flexible buffer to absorb energy.

[0028] 2. In conjunction with a hydraulic damper, after the elastic damper provides flexible buffering and energy absorption during the impact, the hydraulic damper quickly absorbs the remaining impact energy, achieving the effect of reducing impact damage through multi-stage buffering and energy absorption. Attached Figure Description

[0029] Figure 1 A three-dimensional structural diagram illustrating the guardrail structure;

[0030] Figure 2 To illustrate the structure of the hydraulic damper;

[0031] Figure 3 This is a schematic diagram illustrating the structure where a single elastic damper is located outside the load-bearing component;

[0032] Figure 4 This is a structural diagram illustrating a single elastic damper located within a load-bearing component;

[0033] Figure 5 This is a schematic diagram illustrating the structure of the elastic damper located within the load-bearing component and connected to the deformation support component;

[0034] Figure 6 This is a schematic diagram illustrating the structure where the elastic damper is located outside the stressed component and connected to the deformation support component;

[0035] Figure 7 This is a schematic diagram illustrating the structure of the elastic damper connecting the partition;

[0036] Figure 8 This is a schematic diagram illustrating the structure of the elastic damper connecting two partitions;

[0037] Figure 9 This is a schematic diagram illustrating a structure consisting of multiple elastic dampers connected to partitions;

[0038] Figure 10 To illustrate the structural diagram of the deformation support component;

[0039] Figure 11 This is a partial schematic diagram of the limit switch;

[0040] Figure 12 This is a partial schematic diagram illustrating the limitation of the limit switch by the ground rail.

[0041] Reference numerals in the attached drawings: 1. Support base; 2. Load-bearing component; 21. Guide bar; 22. Base; 23. Support component; 3. Elastic damper; 4. Hydraulic damper; 5. Ground rail; 51. Stop bar; 6. Partition component; 7. Deformation support component; 71. Node; 72. Support rod; 8. Guide component; 9. Limiter; 10. Storage base; 11. Protective cover. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. The components of the embodiments of this disclosure described and shown herein can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this disclosure is not intended to limit the scope of the claimed disclosure, but merely represents selected embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0043] Example 1:

[0044] refer to Figures 1 to 4The diagram illustrates a specific embodiment of a guardrail structure with multi-stage buffering according to this utility model. It includes a support base 1, a load-bearing component 2, an elastic damper 3, and a hydraulic damper 4. The support base 1 is fixed to the ground by ground anchors. A ground rail 5 is also fixedly connected to the support base 1. The ground rail 5 is fixed to the ground by ground anchors and one end is connected to the support base 1. The load-bearing component 2 is slidably connected to the ground rail 5, so that the load-bearing component 2 is positioned on one side of the support base 1. A storage seat 10 is connected to the side of the support base 1 opposite to the load-bearing component 2. The storage seat 10 has a storage cavity for the movement of the load-bearing component 2, and the support base 1 also has an inner cavity for the movement of the load-bearing component 2. The elastic damper 3 is disposed on the load-bearing component 2, and the hydraulic damper 4 is disposed on the support base 1 and connected to the load-bearing component 2. The ground rail 5 has a moving section and a buffer section. The load-bearing component 2 moves along the moving section of the ground rail 5 and stops when it reaches the buffer section.

[0045] It also includes a protective sleeve 11 for protecting the elastic damper 3 and the hydraulic damper 4.

[0046] The force-bearing component 2 includes a base 22 and a support 23. The base 22 moves along the ground rail 5. The support 23 is connected to the base 22 and one end is inserted into the inner cavity of the support seat 1. The elastic damper 3 is disposed outside or inside the force-bearing component 2. More specifically, the elastic damper 3 is disposed inside or inside the support 23. When the elastic damper 3 is disposed outside the force-bearing component 2, the elastic damper 3 includes, but is not limited to, being sleeved on the support 23 in the force-bearing component 2 or being disposed parallel to the support 23.

[0047] When the elastic damper 3 is installed inside the force-bearing member 2, the elastic damper 3 is installed along the axis of the force-bearing member 2. The installation position of the elastic damper 3 is not limited by the method provided in this embodiment. The elastic damper 3 to be protected in this application is capable of providing elastic deformation to absorb energy when subjected to impact force.

[0048] When the load-bearing component 2 is impacted, it moves along the axial direction of the support base 1. At this time, the impact force acts on the elastic damper 3, which provides elasticity and forms a flexible energy absorption mechanism against the impact force. Since forces are reciprocal, while the elastic damper 3 provides flexible energy absorption, the hydraulic damper 4 withstands the impact force and rapidly buffers and absorbs energy. This allows for the synergistic effect of the elastic damper 3 and the hydraulic damper 4 in buffering and absorbing the impact force. The hydraulic damper 4, while acting as a buffer, also protects the elastic damper 3, preventing it from collapsing under the instantaneous impact force. Under the action of the hydraulic damper 4, the elastic damper 3 is protected from energy absorption while releasing energy, thus maintaining the overall guardrail structure's ability to perform multi-stage buffering and energy absorption to reduce injuries caused by impacts.

[0049] Example 2

[0050] refer to Figure 5 As shown, this embodiment of a guardrail structure with multi-level buffers differs from Embodiment 1 in that the elastic damper 3 includes two components, which are respectively disposed outside or inside the force-bearing component 2.

[0051] By setting two elastic dampers 3 distributed inside or outside the force-bearing member 2, the impact force that can be withstood when providing flexible energy absorption can be improved.

[0052] Example 3

[0053] refer to Figure 6 As shown, this embodiment of the guardrail structure with multi-level buffers differs from embodiment 2 in that both elastic dampers 3 are sleeved on the outside of the force-bearing member 2 and are arranged sequentially along the axial direction of the force-bearing member 2.

[0054] By sequentially arranging elastic dampers 3 along the axial direction of the force-bearing member 2, multi-stage flexible energy absorption can be achieved through the arrangement of elastic dampers 3. During buffering energy absorption, the elastic dampers 3 acting with the force-bearing member 2 preferentially absorb energy flexibly, while releasing the impact force to the elastic dampers 3 acting with the support base 1. This forms a system that protects the elastic dampers 3 while flexibly absorbing energy, thereby improving the reliability of buffering energy absorption.

[0055] Example 4

[0056] refer to Figure 7 As shown, this embodiment of a guardrail structure with multi-level buffering differs from Embodiment 3 in that a partition 6 is provided on the force-bearing member 2 along the direction of impact movement. When two elastic dampers 3 are sleeved on the force-bearing member 2, the partition 6 is located on the opposite side of the two elastic dampers 3 and contacts or connects to each of the two elastic dampers 3. At this time, one end of the elastic damper 3 acts with the partition 6, so that during flexible energy absorption, the energy of the elastic damper 3 acting with the force-bearing member 2 can be better transferred to the elastic damper 3 acting with the support base 1 by the action of the partition 6.

[0057] Example 5

[0058] refer to Figure 8 and Figure 9 As shown, this embodiment of a guardrail structure with multi-level buffers differs from embodiment 4 in that the elastic damper 3 is provided in two or more forms. This application provides, by way of example, three elastic dampers 3.

[0059] If the elastic damper 3 is installed inside the force-bearing member 2, the three elastic dampers 3 are arranged sequentially along the axial direction inside the force-bearing member 2.

[0060] If the elastic dampers 3 are installed outside the load-bearing member 2, then three elastic dampers 3 are sleeved outside the load-bearing member 2, and a partition 6 is installed on the load-bearing member 2. When more than two elastic dampers 3 are selected, the number of partitions 6 is one less than the number of elastic dampers 3. Therefore, when there are three elastic dampers 3, two partitions 6 are selected. In this case, the elastic dampers 3 that act with the load-bearing member 2 and the elastic dampers 3 that act with the support 1 each act with the partition 6 at one end, and the remaining elastic dampers 3 act with the partitions 6 at both ends.

[0061] By setting multiple elastic dampers 3, multi-stage energy absorption and transfer can be further achieved, thereby further improving the impact speed of the overall guardrail.

[0062] Example 6

[0063] refer to Figure 1 and Figure 10 As shown, this embodiment of the guardrail structure with multi-level buffering differs from embodiment 5 in that it further includes a deformation support 7. The deformation support 7 is disposed between the force-bearing member 2 and the support base 1, and is connected to both the force-bearing member 2 and the support base 1. This allows the deformation support 7 to deform when the force-bearing member 2 moves axially along the support base 1, and to return to its original position when the force-bearing member 2 resets. Multiple deformation support 7s are installed between the force-bearing member 2 and the support base 1, allowing the number of deformation support 7s to be adjusted according to the size of the force-bearing member 2 and the required energy absorption distance. Under the action of the deformation support 7s, not only can energy be absorbed and buffered, but the force-bearing member 2 can also be provided with auxiliary support during energy absorption movement, ensuring stable overall movement.

[0064] Example 7

[0065] refer to Figure 1 and Figure 9 As shown, the specific implementation of a guardrail structure with multi-level buffer in this embodiment differs from that in embodiment 6 in that a guide member 8 is connected to the partition member 6, and the deformation support member 7 is slidably connected to the guide member 8. The guide member 8 is used to guide and support the deformation support member 7 when it deforms, so as to improve the deformation support member 7 can deform better when the force-bearing member 2 absorbs energy and moves, and drive the deformation support member 7 to recover when the force-bearing member 2 recovers.

[0066] Example 8

[0067] refer to Figure 1 and Figure 10As shown, this embodiment of a guardrail structure with multi-level buffering differs from Embodiment 7 in that the deformable support 7 includes a node 71 and at least two struts 72. The two struts 72 are rotatably connected at the node 71, so that the two struts 72 form an intersecting and stress-deformable structure. When the deformable support 7 deforms, the struts 72 rotate along the node 71, thereby increasing the deformation of the deformable support 7 within a limited space.

[0068] Example 9

[0069] refer to Figure 1 and Figure 11 As shown, this embodiment of the guardrail structure with multi-level buffers differs from embodiment 8 in that a limiter 9 is provided between the force-bearing component 2 and the ground rail 5. Under the action of the limiter 9, the force-bearing component 2 can be guided so that the force-bearing component 2 maintains energy absorption deformation along the axial direction of the support seat 1 when it is impacted.

[0070] Example 10

[0071] refer to Figure 1 and Figure 12 As shown, this embodiment of the guardrail structure with multi-level buffering differs from embodiment 9 in that a stop bar 51 is provided on the ground rail 5 along the moving direction of the force-bearing member 2, and a guide bar 21 is provided on the force-bearing member 2. The guide bar 21 is provided with mounting holes for the limiter 9 to be installed, and the guide bar 21 and the limiter 9 are respectively provided on both sides of the ground rail 5. The guide bar 21 and the stop bar 51 fit together to form an anti-tilting limit for the force-bearing member 2, so that when the force-bearing member 2 is subjected to impact force, it should move as much as possible along the axial direction of the support seat 1, and ensure that the elastic damper 3 and the hydraulic damper 4 can fully buffer and absorb energy.

[0072] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems and devices described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. In the several embodiments provided in this disclosure, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division; in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Another point is that the displayed or discussed mutual coupling or direct coupling or communication connection may be through some communication interfaces; the indirect coupling or communication connection of devices or units may be electrical, mechanical, or other forms.

[0073] Finally, it should be noted that the above-described embodiments are merely specific implementations of this disclosure, used to illustrate the technical solutions of this disclosure, and not to limit it. The protection scope of this disclosure is not limited thereto. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the scope of the technology disclosed in this disclosure. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure, and should all be covered within the protection scope of this disclosure. Therefore, the protection scope of this disclosure should be determined by the protection scope of the claims.

Claims

1. A guardrail structure with multi-level buffering, characterized in that, include: Support base (1); Force-bearing component (2), which is slidably connected to support base (1); An elastic damper (3) is disposed on the force-bearing member (2); A hydraulic damper (4) is mounted on a support base (1) and connected to a force-bearing component (2). The force-bearing component (2) is used to withstand the impact force and moves along the axial direction of the support seat (1) when subjected to the impact force. The elastic damper (3) and the hydraulic damper (4) are subjected to the impact force buffer and absorb energy in sequence. The elastic damper (3) undergoes elastic deformation when absorbing energy.

2. The guardrail structure with multi-level buffering according to claim 1, characterized in that: The elastic damper (3) disposed on the force-bearing member (2) includes, but is not limited to, one, two or more.

3. The guardrail structure with multi-level buffering according to claim 1, characterized in that, Also includes: Deformation support (7) is disposed between the force-bearing member (2) and the support base (1) and is connected to the force-bearing member (2) and the support base (1) respectively; When the force-bearing component (2) moves axially along the support base (1), it causes the deformation support component (7) to deform, and when the force-bearing component (2) resets, it causes the deformation support component (7) to recover.

4. The guardrail structure with multi-level buffering according to claim 3, characterized in that: A partition (6) is provided on the force-bearing component (2) along the direction of impact movement.

5. The guardrail structure with multi-level buffering according to claim 4, characterized in that: The partition (6) is connected to a guide (8), and the deformation support (7) is slidably connected to the guide (8). The guide (8) is used to guide and support the deformation support (7) when it deforms.

6. The guardrail structure with multi-level buffering according to claim 3, characterized in that: The deformable support (7) includes a node (71) and at least two struts (72), with the two struts (72) rotatably connected at the node (71) so that the two struts (72) form an intersecting and stress-deformed structure.

7. The guardrail structure with multi-level buffering according to claim 1, characterized in that: The elastic damper (3) is disposed outside or inside the force-bearing member (2).

8. The guardrail structure with multi-level buffering according to claim 4, characterized in that: When the elastic damper (3) is disposed outside the force-bearing member (2), the elastic damper (3) includes one end and / or both ends acting on the partition member (6).

9. The guardrail structure with multi-level buffering according to claim 1, characterized in that: The support base (1) is connected to a storage base (10) on the side away from the force-bearing member (2), and a storage cavity is formed in the storage base (10) for the force-bearing member (2) to move.

10. The guardrail structure with multi-level buffering according to any one of claims 1 to 9, characterized in that, Also includes: The ground rail (5) is fixed to the ground by ground anchors. The support base (1) is fixedly connected to the ground rail (5). A limiter (9) is provided between the force-bearing component (2) and the ground rail (5). When the force-bearing component (2) moves axially along the support base (1) under impact force, the limiter (9) is used to restrict the force-bearing component (2) from sliding on the ground rail (5).

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