Stiffness precisely controlled adjusting type guardrail beam

Abstract

The utility model discloses a stiffness precision control adjustment formula guardrail crossbeam relates to highway guardrail technical field. Including a plurality of connecting pieces and a plurality of standard sections, connecting piece will each standard section with each stand column detachable connection together, and every two standard sections are detachable connection together through the inner sleeve pipe. The present application can calculate the required crossbeam stiffness of guardrail according to the target vehicle protection demand, determine the crossbeam stiffness demand of different height positions, select the crossbeam adjusting piece structure pertinently, and carry out construction connection with the different height position on the stand column, realize the differentiation and precision of the crossbeam stiffness of different height. When needing to improve the crossbeam stiffness in the later use period, can determine the stiffness demand according to the actual calculation result, replace the upper and lower adjusting piece of crossbeam alone, also can replace the left and right adjusting piece alone, thereby reach the purpose of quick adjustment crossbeam stiffness, save the manpower and resource investment of operation maintenance and protection link, reduce the use cost.

Description

Technical Field

[0001] This utility model belongs to the field of highway guardrail technology, and more specifically, it relates to a guardrail beam with adjustable stiffness control. Background Technology

[0002] During highway operation, guardrails, as an important component of traffic safety facilities, play a crucial role in preventing vehicles from veering off the road. On sections of road where the outer edge is more dangerous, when vehicles deviate from their lanes due to operational errors or other reasons, the guardrails act as a barrier, buffer, and guide, preventing vehicles from veering off the road and causing more serious accidents, thus mitigating the consequences. Highway guardrails consist of posts and beams. Currently, the beams in highway guardrails mainly include corrugated beams, round tubes, and rectangular tubes. The cross-sectional dimensions of the beams are standardized and fixed. During construction, they need to be assembled on-site. Later, during operation and maintenance, the existing structure is usually dismantled and a new guardrail beam structure is installed.

[0003] Chinese Patent 202021775405.X discloses an adjustable guardrail, including a handrail, a connecting rod, a guardrail structure, and a support rod structure. The support rod structure includes a ground support rod, a spiral rod, and a rotating block. A connecting rod is provided between two ground support rods. Both the ground support rod and the handrail are hollow. The lower surface of the handrail has a through hole, and the upper end of the ground support rod has a spiral channel block. One end of the spiral rod is screwed into the spiral channel block, and the other end of the spiral rod passes through the through hole of the handrail and is connected to the rotating block. The rotating block is located inside the handrail, and the thickness of the rotating block is equal to the hollow thickness of the handrail. The guardrail structure includes a lower guardrail and an upper guardrail. Users can adjust the guardrail up and down according to their height requirements without having to replace the guardrail due to height issues, saving costs and manpower, increasing the user experience, and enhancing the safety of the guardrail.

[0004] Chinese Patent 202222580782.3 discloses an adjustable road warning guardrail, including a support frame, with fixed tubes fixedly installed on both sides of the support frame, and a support plate fixedly installed on the bottom surface of the fixed tubes. An adjustment component is disposed inside the fixed tubes and used to adjust the height of the road warning guardrail. The adjustment component includes a movable plate movably fitted inside the support plate, a first limiting hole on one side of the support plate, an L-shaped plate fixedly installed on one side of the support plate, and a U-shaped plate fixedly installed on the inner side of the L-shaped plate. A limiting post is movably fitted onto the inner wall of the first limiting hole. Through the coordinated use of the support frame, movable plate, connecting plate, support plate, and fixed tubes, the space occupied during the transportation of the road warning guardrail is reduced, and the number of transportation trips is reduced when transporting road warning guardrails in large quantities.

[0005] Based on existing technology, it is known that the collision points between vehicles and guardrail beams vary depending on the type of traffic. Large vehicles often collide with all guardrail beams, while smaller vehicles, due to their lower height, typically collide with the lower guardrail beams. The effectiveness of beams at different heights also varies in actual road sections. Furthermore, with changes in road traffic conditions and the increase in heavy vehicles, the protective objectives of guardrails change, often requiring an increase in the rigidity of the beam structure. Since the beams are of fixed dimensions, only beams with greater rigidity can be replaced, and the original beams cannot be reused, increasing the operating cost of the guardrail structure. Summary of the Invention

[0006] The technical problem to be solved by this utility model is to provide a stiffness-adjustable guardrail beam that can accurately set and conveniently adjust the stiffness of each beam after calculating and determining the required stiffness value of the beam according to the specific road section and improvement requirements, and realize the differentiation of beam stiffness to meet the requirements of precise control setting and quick disassembly of beam stiffness.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a stiffness-controlled adjustable guardrail beam, including several connectors and several standard sections. The connectors detachably connect each standard section to each post, and every two standard sections are detachably connected together through an inner sleeve.

[0008] Preferably, the standard section includes a left adjusting member, an upper adjusting member, a right adjusting member, and a lower adjusting member. The left and right adjusting members are symmetrically arranged, as are the upper and lower adjusting members. The four adjusting members are detachably connected to each other to form a hollow tubular structure.

[0009] Preferably, both the left and right adjusting members are U-shaped structures, with the bottom and top of the U-shaped structure being first horizontal parts, and the left and right sides being first vertical parts, the first vertical parts fixing the upper and lower first horizontal parts together.

[0010] Preferably, both the upper and lower adjusting components are T-shaped structures. The top of the T-shape is a second horizontal section, and the middle is a second vertical section. The second horizontal section covers the first horizontal sections of the left and right adjusting components, and the second vertical section is sandwiched between the two first horizontal sections of the left and right adjusting components. The bottom surface of the second vertical section is attached to the surface of the inner sleeve. Bolts detachably connect the left, right, upper, and lower adjusting components and the inner sleeve together. When the required rigidity of the crossbeam is large, the upper and lower adjusting components are thicker, and their second vertical sections are provided with grooves. The locking heads on the left and right adjusting components can be slid into the grooves to achieve locking, thereby enhancing the overall structural integrity.

[0011] Preferably, the left and right adjusting components are both channel steel or steel plates bent into a U-shape, the upper and lower adjusting components are both steel plates with a "T" shaped cross-section, and the inner sleeve is a square or rectangular tube.

[0012] Preferably, the two sides of the second vertical part are symmetrically provided with slots, which are arranged along the length of the crossbeam. At the free ends of the two first horizontal parts of the left and right adjustment members, there are locking parts parallel to the first vertical part. The two locking parts extend towards each other and are arranged along the length of the crossbeam. The locking parts are locked and connected to the slots.

[0013] Preferably, the column and the connector are detachably connected by a rotary locking member, and the connector is detachably connected to the left adjusting member by a rotary locking member.

[0014] Preferably, the rotary locking component includes two parallel rotating rods and a connecting rod, with the two ends of the connecting rod respectively fixedly connected to the two rotating rods, forming an H-shape, and a spherical gravity head is provided at the end of the rotating rod.

[0015] Preferably, the column, connector, and left adjusting member are all provided with horizontal connecting holes. The connecting holes are adapted to the rotary locking member. The bottom surface of the connecting hole is provided with a groove. After the rotary locking member passes through the connecting hole, the two rotating rods clamp the column and connector in the middle. The connecting rod passes through the column and connector and is engaged in the groove.

[0016] The beneficial effects of adopting the above technical solution are as follows:

[0017] 1. In this utility model, the required crossbeam stiffness of the guardrail can be calculated based on the protection needs of the target vehicle, determining the stiffness requirements of the crossbeam at different heights. A targeted crossbeam adjustment structure can be selected and connected to the posts at different heights, achieving differentiated and precise setting of crossbeam stiffness at different heights. When the crossbeam stiffness needs to be increased later in use, the stiffness requirement can be determined based on the actual calculation results. The vertical or horizontal adjustment components of the crossbeam can be replaced individually, thereby achieving rapid adjustment of the crossbeam stiffness, saving manpower and resources in operation, maintenance, and upkeep, and reducing operating costs.

[0018] 2. In this utility model, the crossbeam is assembled from standard sections, and each standard section is assembled from four adjusting parts. Every two standard sections are connected by an inner sleeve. The overall structure is very simple and easy to disassemble and replace. At the same time, the self-rotating locking part is used to achieve the self-rotating locking between the left adjusting part and the connecting part, as well as between the connecting part and the crossbeam, avoiding the complicated construction and adjustment process of bolt connection, improving construction efficiency and reducing construction costs.

[0019] 3. In this utility model, a continuous slot is provided on the upper and lower adjustment parts, and a continuous snap-fit ​​part is provided on the left and right adjustment parts, which allows the left and right adjustment parts to be easily and quickly connected with the upper and lower adjustment parts, and improves the overall integrity of the crossbeam.

[0020] 4. In this utility model, the column and the connector, as well as the connector and the left adjusting component, are connected by a rotating locking component. During installation, simply pass the rotating locking component horizontally through the connecting hole, and then rotate it to a vertical position. The two rotating rods will clamp the two connected components. Moving the rotating locking component will then lock the connecting rod into the groove of the connecting hole. The entire operation is very simple, more labor-saving and time-saving than traditional bolt connections, and improves construction efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0022] Figure 2 This is a top view of the structure of this utility model;

[0023] Figure 3 These are front and top views of the rotary locking component;

[0024] Figure 4 This is a schematic diagram showing the connection between the rotary locking component and the column;

[0025] Figure 5 This is a schematic diagram of the connection holes;

[0026] Figure 6 This is a cross-sectional diagram of the rotating locking mechanism that connects the column and the connector.

[0027] Figure 7 This is a schematic diagram of the structure in which the left-right adjustment component and the up-down adjustment component are connected by a slot and a snap-fit ​​part.

[0028] In the diagram: 1. Connector; 2. Left adjusting component; 21. Snap-fit ​​part; 3. Upper adjusting component; 4. Bolt; 5. Right adjusting component; 6. Inner sleeve; 7. Lower adjusting component; 8. Column; 9. Connecting hole; 91. Groove; 10. Rotary locking component; 101. Connecting rod; 102. Rotating rod; 103. Gravity head. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0030] Example 1

[0031] like Figure 1-2 As shown, two crossbeams are provided on the column 8 from top to bottom. The crossbeams consist of several standard sections, and the connector 1 connects each standard section to the column 8 with bolts. Every two standard sections are detachably connected together through the inner sleeve 6.

[0032] The standard section includes a left adjusting component 2, an upper adjusting component 3, a right adjusting component 5, and a lower adjusting component 7. Left adjusting component 2 and right adjusting component 5 are symmetrically arranged, as are upper adjusting component 3 and lower adjusting component 7. Left adjusting component 2 and right adjusting component 5 are channel steel. Upper adjusting component 3 and lower adjusting component 7 are steel plates with a T-shaped cross-section. The four adjusting components form a hollow tubular structure. The inner sleeve 6 is a rectangular tube that fits perfectly inside the tubular structure formed by the four adjusting components, connecting two adjacent standard components together. Bolts 4 detachably connect the four adjusting components and the inner sleeve 6 together.

[0033] Example 2

[0034] like Figure 3-6 As shown, in this embodiment, the column 8 and the connector 1 are detachably connected via a rotary locking member 10, and the connector 1 and the left adjusting member 2 are connected via the rotary locking member 10. The rotary locking member 10 consists of two parallel rotating rods 102, a connecting rod 101, and two gravity heads 103. In practical applications, the connecting rod 101 should be connected close to one end of the rotating rod 102, and the gravity head 103 should be connected to the end away from the connecting rod 101. This eccentric design is to increase the tendency of the rotary self-locking member 10 to rotate from horizontal to vertical around the connecting rod 101, making it easier for the rotary self-locking member 10 to automatically rotate to the vertical position under the action of gravity. During installation, first align the connecting holes 9 of the connected parts, then place the rotary locking member 10 horizontally through the connecting holes 9. When the two rotating rods 102 are located on both sides of the connected parts, rotate the two rotating rods 102 to make them vertical and downward, and move the rotary locking member 10 to lock the connecting rod 101 into the groove 91. The entire installation process is very simple. For disassembly, simply rotate the rotating locking member 10 to a horizontal position and pull it out of the connecting hole 9. Both ends of the connecting hole 9 have round holes that match the gravity head 103, making it easier to install the rotating locking member 10.

[0035] Example 3

[0036] As shown in the figure, when the thickness of the vertical adjustment component is large, a slot can be provided on the second vertical part. Correspondingly, a locking part 21 is provided on the first horizontal part of the left and right adjustment component. Both the slot and the locking part 21 are provided along the length of the crossbeam. During installation, the locking part 21 is inserted into the slot from the end. Compared with the crossbeam connected only by bolts, the crossbeam in this embodiment has better overall integrity.

[0037] During the design of the guardrail, the required beam stiffness at different heights can be determined through calculations, and the corresponding beam structure can be selected and installed to achieve precise setting of the guardrail beam stiffness. If the beam stiffness needs to be adjusted later in operation, the upper and lower adjusting components can be replaced individually, and then a suitable inner sleeve 6 can be matched. Alternatively, the left and right adjusting components can be replaced individually, and then a suitable inner sleeve 6 can be matched to achieve dynamic adjustment of the beam stiffness.

[0038] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A stiffness-adjustable guardrail beam, characterized in that, It includes several connectors (1) and several standard sections. The connectors (1) detachably connect each standard section to each column (8). Every two standard sections are detachably connected together through an inner sleeve (6). The standard section includes a left adjusting member (2), an upper adjusting member (3), a right adjusting member (5), and a lower adjusting member (7). The left adjusting member (2) and the right adjusting member (5) are symmetrically arranged, and the upper adjusting member (3) and the lower adjusting member (7) are symmetrically arranged. The four adjusting members are detachably connected to each other to form a hollow tubular structure. The left adjusting member (2) and the right adjusting member (5) are both U-shaped structures. The bottom and top of the U-shaped structure are both first horizontal parts. The first vertical part fixes the two first horizontal parts together.

2. The stiffness-adjustable guardrail beam according to claim 1, characterized in that, Both the upper adjusting member (3) and the lower adjusting member (7) are "T" shaped structures. The top of the "T" shaped structure is the second horizontal part, and the middle is the second vertical part. The second horizontal part covers the first horizontal part of the left adjusting member (2) and the first horizontal part of the right adjusting member (5). The second vertical part is sandwiched between the two first horizontal parts of the left adjusting member (2) and the right adjusting member (5). The bottom surface of the second vertical part is attached to the surface of the inner sleeve (6). The bolt (4) detachably connects the left adjusting member (2), the right adjusting member (5), the upper adjusting member (3), the lower adjusting member (7), and the inner sleeve (6) together.

3. The stiffness-adjustable guardrail beam according to claim 2, characterized in that, The left adjusting member (2) and the right adjusting member (5) are both channel steel or steel plate bent into a U shape, the upper adjusting member (3) and the lower adjusting member (7) are both steel plates, the cross section of the steel plate is "T" shaped, and the inner sleeve (6) is a square tube or a rectangular tube.

4. The stiffness-adjustable guardrail beam according to claim 2, characterized in that, The two sides of the second vertical part are symmetrically provided with slots, which are set along the length of the crossbeam. At the free ends of the two first horizontal parts of the left and right adjustment parts, there are two locking parts (21) parallel to the first vertical part. The two locking parts (21) extend towards each other and are set along the length of the crossbeam. The locking parts (21) are locked and connected to the slots.

5. The stiffness-adjustable guardrail beam according to claim 1, characterized in that, The column (8) and the connector (1) are detachably connected by a rotating locking member (10), and the connector (1) is detachably connected to the left adjusting member (2) by a rotating locking member (10).

6. The stiffness-adjustable guardrail beam according to claim 5, characterized in that, The rotary locking component (10) includes two parallel rotating rods (102) and a connecting rod (101). The two ends of the connecting rod (101) are respectively fixedly connected to the two rotating rods (102), and the three form an H shape. A spherical gravity head (103) is provided at the end of the rotating rod (102).

7. The stiffness-adjustable guardrail beam according to claim 6, characterized in that, A horizontal connecting hole (9) is provided on the column (8), the connector (1), and the left adjusting part (2). The connecting hole (9) is adapted to the rotating locking part (10). The bottom surface of the connecting hole (9) is provided with a groove (91). After the rotating locking part (10) passes through the connecting hole (9), the two rotating rods (102) clamp the column (8) and the connector (1) in the middle. The connecting rod (101) passes through the column (8) and the connector (1) and is engaged in the groove (91).

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