Protective fence for expressway
By introducing a multi-stage buffer system consisting of movable plates, rotating rods, and damping components into the guardrail, the problem of insufficient deformation space between the corrugated plate and the pillar is solved, achieving more effective absorption of vehicle collision energy and reduction of vehicle damage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-03-20
AI Technical Summary
When existing highway guardrails are hit by a car at the corresponding positions of the corrugated plate and the post, the limited plastic space for the corrugated plate to deform due to the post's obstruction prevents the full utilization of the new material's deformability, resulting in severe vehicle damage.
A guardrail was designed, including a movable plate, a rotating rod, a damping component, and a linkage assembly. The initial impact kinetic energy is absorbed by the elastic support component, and the rotating rod and the damping component work together to perform multi-level buffering, forming a multi-level buffering system to reduce the peak impact force.
It effectively absorbs the kinetic energy of vehicle collisions, reduces the degree of vehicle damage, significantly reduces the peak impact force transmitted to the posts, and improves the buffering performance of the guardrail.
Smart Images
Figure CN224016199U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to traffic safety technical field, concretely relates to the guard rail for highway. BACKGROUND
[0002] In recent years, with the rapid increase of highway traffic and the improvement of vehicle speed, the limitations of traditional guardrails in collision safety performance are increasingly prominent. Most of the existing guardrails are rigid crash structures (such as corrugated beam guardrails, concrete guardrails, etc.), which are mainly installed in cliff road sections or used for multi-lane isolation. They are mainly composed of a stand and a corrugated plate fixed on one side of the stand, which can limit the vehicle trajectory, prevent vehicles from running out of control, and require high structural strength, so the material is usually made of steel;
[0003] Although it can limit the vehicle trajectory to a certain extent, the structural strength is large, and the vehicle is often severely damaged when it contacts the corrugated plate. With the development of new material technology such as carbon fiber plate, which has structural strength and can be deformed under pressure, it can be used to manufacture corrugated plates to a certain extent to solve the above problems;
[0004] However, the corrugated plate is fixed by the stand, and the stand itself has high structural strength and requires high installation stability when fixed with the roadbed. Therefore, when the position corresponding to the corrugated plate and the stand is subjected to automobile collision, the plastic space of the corrugated plate is limited due to the obstruction of the stand, and the deformable characteristics of the corrugated plate made of micro-deformation material cannot be fully utilized. SUMMARY
[0005] Therefore, the purpose of the utility model is to provide a guard rail for highway to solve the problem that the corrugated plate and the stand are relatively fixed, and the plastic space of the corrugated plate is limited due to the obstruction of the stand when the position corresponding to the corrugated plate and the stand is subjected to automobile collision, and the characteristics of the corrugated plate made of micro-deformation material cannot be fully utilized.
[0006] The utility model realizes the following technical scheme:
[0007] A guard rail for highway, comprising a guard rail body extending along one side of the road and a plurality of stands for supporting the guard rail body, the stand is hollow and tubular, a rotating rod is coaxially and rotatably connected inside the stand, and a damping member is arranged between the rotating rod and the stand;
[0008] The side of the guard rail body facing the road is provided with a movable plate, a plurality of elastic supports are arranged between the movable plate and the guard rail body along the length direction of the guard rail body, and the movable plate is kept away from the guard rail body under the elastic force of the elastic supports;
[0009] A plurality of guide rods corresponding to the plurality of columns are arranged between the movable plate and the guardrail body, one end of the guide rod is connected with the movable plate, the other end passes through the guardrail body and is in sliding connection with the guardrail body, a linkage assembly is arranged between the guide rod and the rotating rod, and the rotating rod is driven to rotate in the column by the linkage assembly when the guide rod moves axially.
[0010] Further limitation, the linkage assembly comprises a gear and a rack, the gear is coaxially connected with the rotating rod, the rack is engaged with one side of the gear, the rack is connected with the guide rod and extends axially along the guide rod.
[0011] Further limitation, the damping member comprises a plurality of first support bodies surrounding and protruding outward from the rotating rod and extending axially along the rotating rod, and a second support body located between any two adjacent first support bodies, the second support body is connected with the inner wall of the column;
[0012] The first support body is a rigid structure, and the second support body is a flexible structure;
[0013] Or, the first support body is a flexible structure, and the second support body is a rigid structure;
[0014] Or, the first support body and the second support body are both flexible structures.
[0015] Further limitation, the damping member is a rubber roller, the rubber roller is fixedly sleeved outside the rotating rod, and the outer wall is in close fit with the inner wall of the column.
[0016] Further limitation, the inner wall of the rubber roller is provided with an insertion slot extending along the thickness direction thereof, the insertion slot is provided with an insertion block, and the insertion block is connected with the outer wall of the rotating rod.
[0017] Further limitation, the damping member is a rubber roller, the rubber roller is fixedly connected with the column and movably sleeved outside the rotating rod, and is in close fit with the outer wall of the rotating rod.
[0018] Further limitation, the outer wall of the rubber roller is provided with an insertion slot extending along the thickness direction thereof, the insertion slot is provided with an insertion block, and the insertion block is connected with the inner wall of the column.
[0019] Further limitation, the damping member is a rubber roller, the rubber roller is rotatably arranged in the column and is in close fit with the column and the rotating rod.
[0020] Further limited, the elastic support includes two connecting rods, two fixed rods and two first spring dampers arranged on the upper and lower sides of the movable plate respectively, the connecting rod, the fixed rod and the first spring damper are located between the movable plate and the guardrail body, the connecting rod and the fixed rod are hinged at opposite ends and hinged at the other ends with the movable plate and the guardrail body respectively, and the first spring damper is connected with the connecting rod and the guardrail body at two ends respectively.
[0021] Further limited, the elastic support further includes a second spring damper, the second spring damper is sleeved outside the guide rod, and the two ends of the second spring damper are respectively abutted with the movable plate and the guardrail body.
[0022] The beneficial effects of the utility model lie in:
[0023] When the vehicle collides with the movable plate, firstly, the elastic support is deformed to absorb part of the impact kinetic energy of the vehicle collision, then the linear motion of the movable plate drives the rotating rod to rotate under the action of the linkage assembly, and the rotating inertia and the damping piece buffer are utilized to absorb part of the impact kinetic energy of the vehicle collision, so that the impact kinetic energy of the vehicle is absorbed multiple times, and the protection effect of the vehicle deviating from the road is effectively achieved.
[0024] Meanwhile, the vehicle directly contacts the movable plate, and the movable plate is elastically connected to the guardrail body, so that the damage degree of the vehicle when the vehicle collides with the existing rigid anti-collision structure is reduced.
[0025] Other advantages, objects and features of the utility model will be described in the subsequent specification to some extent, and to some extent, it will be obvious to those skilled in the art based on the study of the following text or can be taught from the practice of the utility model. The objects and other advantages of the utility model can be achieved and obtained by the following specification. BRIEF DESCRIPTION OF DRAWINGS
[0026] Figure 1 It is a three-dimensional structure schematic view (first visual angle) of the utility model embodiment one;
[0027] Figure 2 It is a three-dimensional structure schematic view (second visual angle) of the utility model embodiment one;
[0028] Figure 3 It is a connection schematic view (top view) of the guardrail body and the movable plate of the utility model;
[0029] Figure 4 Structure diagram of linkage assembly and damping member of the utility model;
[0030] Figure 5 Structure diagram of internal structure of the utility model;
[0031] Figure 6 Structure diagram of the second embodiment of the utility model;
[0032] Figure 7 Connection diagram of rotating rod and rubber roller in the second embodiment of the utility model;
[0033] Figure 8 Connection structure diagram of the third embodiment of the utility model;
[0034] Figure 9 Structure diagram of rubber roller in the fourth embodiment of the utility model.
[0035] In the drawings:
[0036] 1, guardrail body; 2, stand; 3, rotating rod; 4, movable plate; 401, guide rod; 5, gear; 501, rack; 6, first support body; 7, second support body; 8, rubber roller; 9, slot; 901, plug; 10, connecting rod; 11, fixed rod; 12, first spring damping; 13, second spring damping. DETAILED DESCRIPTION
[0037] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.
[0038] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.
[0039] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined, explained and interpreted in the subsequent drawings.
[0040] In the above description of the utility model, it needs to be explained that the terms "one side", "the other side" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.
[0041] In addition, the term "same" and the like do not mean that the components must be absolutely the same, but there can be slight differences. The term "vertical" only means that the positional relationship between the components is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly inclined.
[0042] Please refer to Figures 1-9 The utility model provides the following technical scheme:
[0043] Embodiment one: a guardrail for a highway, comprising a guardrail body 1 extending along one side of a road and a plurality of stand columns 2 for supporting the guardrail body 1, the stand column 2 is hollow and tubular, a rotating rod 3 is coaxially and rotatably connected in the stand column 2, and a damping member is arranged between the rotating rod 3 and the stand column 2;
[0044] A movable plate 4 is arranged on the side of the guardrail body 1 facing the road, a plurality of elastic supporting members are arranged between the movable plate 4 and the guardrail body 1 along the length direction of the guardrail body 1, and the movable plate 4 is kept away from the guardrail body 1 under the elastic force of the elastic supporting members;
[0045] A plurality of guide rods 401 corresponding to the plurality of stand columns 2 are further arranged between the movable plate 4 and the guardrail body 1, one end of the guide rod 401 is connected with the movable plate 4, the other end penetrates through the guardrail body 1 and is slidably connected with the guardrail body 1, a linkage assembly is arranged between the guide rod 401 and the rotating rod 3, and the guide rod 401 can drive the rotating rod 3 to rotate in the stand column 2 through the linkage assembly when the guide rod 401 moves axially.
[0046] In this scheme, the movable plate 4 is pushed away from the guardrail body 1 under the elastic force of the elastic supporting members, and a first-stage buffer structure is formed under the cooperation of the movable plate 4 and the elastic supporting members.
[0047] The rotating rod 3 can rotate in the stand column 2 through the linkage assembly and cooperate with the damping member to buffer the rotation of the rotating rod 3 through the damping member, thereby forming a second-stage buffer structure.
[0048] In specific use, when the vehicle collides with the position corresponding to the guardrail body 1 and the post 2 after deviating from the road, the vehicle first collides with the movable plate 4. At this time, the movable plate 4 is affected by the impact force of the vehicle, overcomes the elastic force of the elastic support, and is hit by the vehicle to the guardrail body 1. At this time, the guide rod 401 is displaced synchronously with the movable plate 4, and drives the rotating rod 3 to rotate in the post 2 through the linkage assembly, and buffers the potential energy of the rotating rod 3 through the damping member.
[0049] In the above process, the vehicle collides with the movable plate 4. First, part of the impact kinetic energy of the vehicle collision is absorbed by the deformation of the elastic support. Then, the linear motion of the movable plate 4 drives the rotating rod 3 to rotate under the action of the linkage assembly, and the rotating inertia and the damping member buffer of the rotating rod 3 absorb part of the impact kinetic energy of the vehicle collision again. In this way, the impact kinetic energy of the vehicle is absorbed multiple times, effectively achieving the protection effect when the vehicle deviates from the road. The movable plate 4 is installed at the position opposite to the guardrail body 1 and the post 2, and is supported by the elastic support to be lifted away from the post 2. When the vehicle collides, the elastic support plate absorbs part of the impact energy by deforming, forming a secondary buffer system complementary to the main support of the post 2, and significantly reducing the impact force peak value transmitted to the post 2 directly.
[0050] At the same time, the vehicle directly contacts the movable plate 4, and the movable plate 4 is elastically connected to the guardrail body 1. Compared with the existing rigid anti-collision structure, the damage degree of the vehicle can be reduced when the vehicle collides.
[0051] In the embodiment, the linkage assembly includes a gear 5 and a rack 501. The gear 5 is coaxially connected with the rotating rod 3. The rack 501 is engaged with one side of the gear 5. The rack 501 is connected with the guide rod 401 and extends axially along the guide rod 401.
[0052] In the scheme, when the vehicle collides with the movable plate 4, the movable plate 4 is displaced towards the guardrail body 1. At this time, the rack 501 is driven to displace synchronously by the guide rod 401. Since one side of the gear 5 is engaged with the rack 501, the gear 5 is driven to rotate under the linear motion of the rack 501, so that the rotating rod 3 is driven to rotate by the gear 5.
[0053] In the embodiment, the damping member includes a plurality of first support bodies 6 surrounding and protruding outward from the rotating rod 3 and extending axially along the rotating rod 3, and a second support body 7 located between any two adjacent first support bodies 6. The second support body 7 is connected with the inner wall of the post 2.
[0054] The first support body 6 is a rigid structure, and the second support body 7 is a flexible structure.
[0055] Or, the first support body 6 is a flexible structure, and the second support body 7 is a rigid structure.
[0056] Or, the first support body 6 and the second support body 7 are both flexible structures.
[0057] In the scheme, the second support body 7 is located on the rotation track of the first support body 6. When the rotating rod 3 rotates, it drives the first support body 6 to contact the second support body 7. Thus, through the contact between the first support body 6 and the second support body 7, the rotation kinetic energy of the rotating rod 3 is buffered through the flexible characteristics of the first support body 6 and / or the second support body 7, thereby indirectly absorbing part of the impact kinetic energy when the vehicle collides.
[0058] Among them, the flexible structure can adopt spring steel. Through the elastic deformation characteristics thereof, the rotation kinetic energy of the rotating rod 3 can be buffered during the rotation and contact of the first support body 6 and the second support body 7.
[0059] In the embodiment, the elastic support member includes two connecting rods 10, two fixed rods 11 and two first spring dampings 12 respectively arranged on the upper and lower sides of the movable plate 4. The connecting rod 10, the fixed rod 11 and the first spring damping 12 are located between the movable plate 4 and the guardrail body 1. The connecting rod 10 and the fixed rod 11 are hingedly connected at opposite ends, and the other ends are hingedly connected with the movable plate 4 and the guardrail body 1 respectively. The two ends of the first spring damping 12 are connected with the connecting rod 10 and the guardrail body 1 respectively.
[0060] In the scheme, the two connecting rods 10 and the two fixed rods 11 form a double-hinged structure, and the double-hinged structure allows three-dimensional deformation, which can adapt to different collision angles of the vehicle. At the same time, through the cooperation of the first spring damping 12, a basic linear damping is provided for the connecting rod 10, forming a third-level buffer structure. When the movable plate 4 is displaced towards the guardrail body 1, the connecting rod 10 is extruded against the first spring damping 12, and the impact kinetic energy suffered by the movable plate 4 is buffered through the compression of the first spring damping 12.
[0061] In the embodiment, the elastic support member further includes a second spring damping 13, and the second spring damping 13 is sleeved outside the guide rod 401. The two ends of the second spring damping 13 are respectively abutted against the movable plate 4 and the guardrail body 1.
[0062] In the scheme, the second spring damping 13 is sleeved outside the guide rod 401. When the guide rod 401 is synchronized with the movable plate 4 to move towards the guardrail body 1, the movable plate 4 and the guardrail body 1 extrude the second spring damping 13, thereby providing a basic linear damping for the movable plate 4, forming a fourth-level buffer structure, and buffering the impact kinetic energy suffered by the movable plate 4 through the second spring damping 13.
[0063] Embodiment two, embodiment two and embodiment one are different in that: the damping member is a rubber roller 8, the rubber roller 8 is fixedly sleeved outside the rotating rod 3, and the outer wall is tightly matched with the inner wall of the stand column 2.
[0064] In this scheme, when the rotating rod 3 rotates, the rubber roller 8 is driven to rotate synchronously. Because the outer wall of the rubber roller 8 is tightly matched with the inner wall of the stand column 2, the high friction coefficient and elastic deformation characteristics of the rubber of the rubber roller 8 can effectively absorb the kinetic energy impact generated by the rotation of the rotating rod 3, thereby buffering the rotational kinetic energy of the rotating rod 3.
[0065] In this embodiment, the inner wall of the rubber roller 8 is provided with a slot 9 extending along the thickness direction thereof, and a plug 901 is arranged in the slot 9, and the plug 901 is connected with the outer wall of the rotating rod 3.
[0066] In this scheme, the plug 901 extends along the thickness direction of the rotating rod 3, and is inserted into the slot 9, so that when the rotating rod 3 rotates, the plug 901 and the slot 9 cooperate to drive the rubber roller 8 to rotate synchronously.
[0067] Embodiment three, embodiment three and embodiment one are different in that: the damping member is a rubber roller 8, the rubber roller 8 is fixedly connected with the stand column 2, and is movably sleeved outside the rotating rod 3, and is tightly matched with the outer wall of the rotating rod 3.
[0068] In this scheme, when the rotating rod 3 rotates, because the outer wall thereof is tightly matched with the inner wall of the rubber roller 8, the high friction coefficient and elastic deformation characteristics of the rubber of the rubber roller 8 can effectively absorb the kinetic energy impact generated by the rotation of the rotating rod 3, thereby buffering the rotational kinetic energy of the rotating rod 3.
[0069] In this embodiment, the outer wall of the rubber roller 8 is provided with a slot 9 extending along the thickness direction thereof, and a plug 901 is arranged in the slot 9, and the plug 901 is connected with the inner wall of the stand column 2.
[0070] In this scheme, the slot 9 and the plug 901 cooperate to fix the rubber roller 8 on the inner wall of the stand column 2, and because the inner wall of the rubber roller 8 is tightly matched with the outer wall of the rotating rod 3, under the extrusion of the rotating rod 3, the rubber roller 8 is stably connected with the stand column 2.
[0071] Embodiment four, embodiment four and embodiment one are different in that: the damping member is a rubber roller 8, the rubber roller 8 is rotatably arranged in the stand column 2 together with the rotating rod 3, and is tightly matched with the stand column 2 and the rotating rod 3.
[0072] In this scheme, the rubber roller 8 is movably installed between the rotating rod 3 and the stand column 2, and double friction is formed between the rotating rod 3-rubber roller 8-stand column 2, thereby further buffering the rotational kinetic energy of the rotating rod 3.
[0073] Finally, it is pointed out that the above embodiments are merely intended to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the purpose and scope of the present application, and all should be covered in the scope of the claims of the present application.
Claims
1. A guardrail for highways, comprising a guardrail body (1) extending along one side of the road and a plurality of posts (2) for supporting the guardrail body (1), characterized in that: The column (2) is hollow and tubular inside. A rotating rod (3) is coaxially and rotatably connected inside the column (2). A damping element is provided between the rotating rod (3) and the column (2). The guardrail body (1) has a movable plate (4) on the side facing the road. Multiple elastic support members are provided between the movable plate (4) and the guardrail body (1) along the length of the guardrail body (1). The movable plate (4) is kept away from the guardrail body (1) under the elastic force of the elastic support members. Between the movable plate (4) and the guardrail body (1), there are also a plurality of guide rods (401) corresponding to a plurality of posts (2). One end of the guide rod (401) is connected to the movable plate (4), and the other end passes through the guardrail body (1) and the two are slidably connected. A linkage component is provided between the guide rod (401) and the rotating rod (3). When the guide rod (401) moves axially, the linkage component can drive the rotating rod (3) to rotate inside the post (2).
2. The guardrail for highways according to claim 1, characterized in that: The linkage assembly includes a gear (5) and a rack (501). The gear (5) is coaxially connected to the rotating rod (3). The rack (501) meshes with one side of the gear (5). The rack (501) is connected to the guide rod (401) and extends axially along the guide rod (401).
3. The guardrail for highways according to claim 1, characterized in that: The damping element includes a plurality of first support bodies (6) that surround and protrude from the rotating rod (3) and extend along the axial direction of the rotating rod (3) and a second support body (7) located between any two adjacent first support bodies (6), the second support body (7) being connected to the inner wall of the column (2); The first support (6) is a rigid structure, and the second support (7) is a flexible structure; Alternatively, the first support (6) may be a flexible structure, and the second support (7) may be a rigid structure; Alternatively, both the first support (6) and the second support (7) are flexible structures.
4. The guardrail for highways according to claim 1, characterized in that: The damping component is a rubber roller (8), which is fixedly sleeved on the outside of the rotating rod (3), and its outer wall is tightly fitted with the inner wall of the column (2).
5. The guardrail for highways according to claim 4, characterized in that: The inner wall of the rubber roller (8) is provided with a slot (9) extending along its thickness direction. A plug (901) is provided in the slot (9), and the plug (901) is connected to the outer wall of the rotating rod (3).
6. The guardrail for highways according to claim 1, characterized in that: The damping component is a rubber roller (8), which is fixedly connected to the column (2) and movably sleeved outside the rotating rod (3), and closely fitted with the outer wall of the rotating rod (3).
7. The guardrail for highways according to claim 6, characterized in that: The outer wall of the rubber roller (8) is provided with a slot (9) extending along its thickness direction, and a plug (901) is provided in the slot (9), and the plug (901) is connected to the inner wall of the column (2).
8. The guardrail for highways according to claim 1, characterized in that: The damping component is a rubber roller (8), which is rotatably disposed inside the column (2) along with the column (2) and the rotating rod (3), and is in close cooperation with both the column (2) and the rotating rod (3).
9. The guardrail for highways according to claim 1, characterized in that: The elastic support includes two connecting rods (10), two fixed rods (11), and two first spring dampers (12) respectively disposed on the upper and lower sides of the movable plate (4). The connecting rods (10), fixed rods (11), and first spring dampers (12) are all located between the movable plate (4) and the guardrail body (1). The connecting rods (10) and fixed rods (11) are hinged at one end and the other end is hinged to the movable plate (4) and the guardrail body (1) respectively. The two ends of the first spring dampers (12) are connected to the connecting rods (10) and the guardrail body (1) respectively.
10. The guardrail for highways according to claim 9, characterized in that: The elastic support also includes a second spring damper (13), which is sleeved on the outside of the guide rod (401). The two ends of the second spring damper (13) abut against the movable plate (4) and the guardrail body (1) respectively.