Anti-blocking block and guardrail unit

Abstract

The utility model discloses an obstruction block and a guardrail unit. The barrier block is used for connecting a truss and a protective beam of a guardrail, the barrier block comprises a top plate, a back plate and two opposite side plates, the top plate fixes the tops of the two side plates, the back plate is fixedly connected with the two side plates and the top plate, and the top plate, the back plate and the side plates form a semi-surrounding structure. A connecting plate is arranged at one end, deviating from the back plate, of each side plate, is parallel to the back plate, and is used for connecting the protective beam; a through groove is formed in the side, away from the connecting plate, of the blocking preventing block, the extending direction of the through groove is consistent with the extending direction of the stand column, and the truss is fixedly installed in the through groove. The anti-blocking block is of a hollow structure, and the energy absorption effect is good. The through groove is also of a semi-surrounding structure, the truss is fixedly installed in the through groove, the three faces of the truss are surrounded by the blocking prevention blocks, the connection strength is high, and the safety of the guardrail at the road filling and digging junction can be improved.

Description

Technical Field

[0001] This application relates to the field of road construction facility technology, and in particular to a barrier block and guardrail unit. Background Technology

[0002] In recent years, with the increasing mileage of expressways and the growing popularity of automobiles in my country, traffic accidents occurring frequently at the ends of guardrails at the transition sections between excavation and embankment sections, often due to the presence of buried drainage ditches along the roadside. In traffic accidents, when a protective beam is impacted, it transfers the collision energy to the anti-collision blocks. These blocks absorb some of the energy through deformation, thus mitigating the severity of injuries and fatalities. However, the existing anti-collision blocks at the ends of guardrails absorb limited collision energy in traffic accidents, thereby affecting the protective performance of the guardrails. Utility Model Content

[0003] The anti-blocking blocks and guardrail units provided in this application can improve the safety of guardrails at the road cut-and-fill junction.

[0004] On one hand, this application provides a blocking block for connecting the truss and protective beam of a guardrail. The blocking block includes a top plate, a back plate, and two oppositely arranged side plates. The top plate fixes the top of the two side plates, and the back plate fixes the two side plates and the top plate. The top plate, the back plate, and the side plates form a semi-enclosed structure. Each side plate has a connecting plate at one end away from the back plate. The connecting plate is parallel to the back plate and is used to connect the protective beam. The blocking block has a through groove on the side away from the connecting plate. The extension direction of the through groove is consistent with the extension direction of the column. The truss is fixedly installed in the through groove.

[0005] In the above embodiments, the anti-blocking block has a hollow structure, which provides better energy absorption. The through slot also has a semi-enclosed structure, with the truss fixedly installed in the through slot and surrounded by anti-blocking blocks on three sides, resulting in high connection strength and improved reliability.

[0006] In one embodiment, the protective beam is a corrugated plate, the corrugated plate includes corrugated peaks and troughs spaced apart along the extension direction of the column, the two side plates each include a protrusion adapted to the shape of the raised area on the back side of the corrugated plate, and the vertical projection of the connecting plate on the side plate is located between the protrusion and the back plate.

[0007] In one embodiment, the back plate and the connecting plate do not overlap in a direction perpendicular to the back plate.

[0008] In one embodiment, each side plate is provided with a plurality of first mounting holes, which are spaced apart and arranged along the extension direction of the through groove.

[0009] In one embodiment, the connecting plate is provided with a plurality of second mounting holes, which are spaced apart and arranged along the extension direction of the through groove.

[0010] In one embodiment, the top plate, back plate, and side plate are an integral structure.

[0011] In one embodiment, the upper edge of the connecting plate is located between the upper edge and the lower edge of the side plate, and the lower edge of the connecting plate is lower than the lower edge of the side plate.

[0012] On the other hand, embodiments of this application also provide a guardrail unit, which includes a post, a truss, a protective beam and the aforementioned anti-blocking block. One end of the truss is connected to the post, and the other end is connected to the through groove of the anti-blocking block. The protective beam is installed on the side of the anti-blocking block away from the truss.

[0013] In one embodiment, the protective beam is a three-wave protective beam. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the anti-blocking block provided in one embodiment of this application;

[0015] Figure 2 A side view of a blocking block provided in one embodiment of this application;

[0016] Figure 3 A rear view of a blocking block provided in one embodiment of this application;

[0017] Figure 4 A top view of a blocking block provided in one embodiment of this application;

[0018] Figure 5 A top view of the back panel and side panel provided in one embodiment of this application;

[0019] Figure 6 A top view of the back panel and side panel provided for another embodiment of this application;

[0020] Figure 7 A side view of a guardrail unit provided in one embodiment of this application.

[0021] Figure label:

[0022] 100-Antiblocking block; 200-Column; 300-Protective beam; 400-Truss; 1-Side plate; 10-Through groove; 101-First side plate; 102-Second side plate; 2-Top plate; 3-Back plate; 301-First back plate; 302-Second back plate; 31-First side wall; 32-Second side wall; 11-First mounting hole; m-Valley; n-Crest; 12-Protrusion; 5-Connecting plate; 51-Second mounting hole; 52-Third mounting hole. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description of the application is provided in conjunction with the accompanying drawings and embodiments.

[0024] The terminology used in the following embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” “the,” and “this” are intended to also include expressions such as “one or more” unless the context clearly indicates otherwise.

[0025] References to “an embodiment” or “a specific embodiment” as used in this specification mean that one or more embodiments of this application include a particular feature, structure, or characteristic described in connection with that embodiment. The terms “comprising,” “including,” “having,” and variations thereof mean “including, but not limited to,” unless otherwise specifically emphasized.

[0026] In related technologies, guardrails are typically installed on both sides of roads to guide vehicles within designated lanes and prevent them from veering off course due to loss of control or driver negligence. Guardrails consist of posts, protective beams, and anti-collision blocks. One end of each post is buried underground, while the other end is connected to the protective beam via anti-collision blocks. The anti-collision blocks, acting as load-bearing components between the protective beam and the post, function as both a connecting structure and an energy-absorbing mechanism. After the guardrail deforms upon impact, the anti-collision blocks can absorb some of the impact energy, thereby reducing the severity of passenger injuries or fatalities. The anti-collision blocks are fixed between the post and the protective beam, allowing the protective beam to suspend from the post. If an out-of-control vehicle collides with the guardrail, the front wheels will not be trapped at the post due to the protective beam being close to it.

[0027] The boundary between excavation and embankment on highways is typically located during highway construction. Excavation involves removing earth and rock from the natural ground to lower the ground level, while embankment involves taking soil from other areas to raise the ground level and form a road embankment. The boundary between excavation and embankment, the transition zone between the two, is typically marked with a drainage ditch.

[0028] Since guardrail posts cannot be installed at the ditch, they must be placed on the outer side of the ditch away from the road. The protective beams must be placed at the edge of the road and gradually extend outwards towards the ditch. Therefore, a truss spanning the ditch needs to be installed on the posts, and anti-blocking blocks are then installed on the truss to connect the protective beams. The existing anti-blocking blocks, connected to the truss, have poor energy absorption.

[0029] To address the aforementioned issues, this application provides a barrier block and guardrail unit that can improve the safety of guardrails at road cut-and-fill junctions.

[0030] Figure 1 This is a schematic diagram of the structure of the anti-blocking block provided in an embodiment of this application. Figure 2 A side view of a blocking block provided in one embodiment of this application. Figure 3 A rear view of a blocking block provided in one embodiment of this application. Figure 4 This is a top view of a blocking block provided in one embodiment of this application. (In conjunction with...) Figures 1 to 4 This application provides an anti-blocking block applied to the end of a guardrail spanning a ditch, used to connect the guardrail truss 400 and the protective beam 300. The anti-blocking block includes a top plate 2, a back plate 3, and two oppositely arranged side plates 1. The top plate 2 fixes the top of the two side plates 1, and the back plate 3 fixes the two side plates 1 and the top plate 2. The front and lower ends of the anti-blocking block are open. Each side plate 1 has a connecting plate 5 at the end opposite to the back plate 3. The connecting plate 5 is parallel to the back plate 3 and is used to connect the protective beam 300 at the front end of the anti-blocking block. The rear end of the anti-blocking block, i.e., the side opposite to the connecting plate 5, has a through groove. The extension direction of the through groove is consistent with the extension direction of the column, and the truss 400 is fixedly installed in the through groove.

[0031] In the above embodiment, the anti-blocking block has a hollow structure, which provides better energy absorption. The through slot also has a semi-enclosed structure, with the truss 400 fixedly installed in the through slot. It is surrounded by anti-blocking blocks on three sides, resulting in high connection strength and improved reliability.

[0032] Figure 5 A top view of the back panel and side panel provided in one embodiment of this application, with reference to... Figure 3 , Figure 4 and Figure 5In one specific embodiment, the back plate 3 has a U-shaped structure, recessed into the anti-blocking block. Correspondingly, the top plate 2 connected to the back plate 3 also has a recessed portion, so that the interconnected back plate 3 and top plate 2 form a through groove. The top plate 2, back plate 3, and side plates 1 form a semi-enclosed structure. The recessed portion of the back plate 3 includes a first side wall 31 and a second side wall 32 that are parallel to each other, and the first side wall 31, the second side wall 32, and the two side plates 1 are parallel to each other. The side plates 1 include a first side plate 101 and a second side plate 102. The first side wall 31 and the first side plate 101 are spaced apart by a predetermined distance, and the second side wall 32 and the second side plate 102 are spaced apart by a predetermined distance. Therefore, the U-shaped back plate 3 and the two side plates 1 include two small deformation spaces A. Compared with the anti-blocking block where both side plates are directly connected to the truss 400, the embodiment of this application sets the U-shaped back plate to be connected to the truss 400, which has better energy absorption effect and higher strength.

[0033] Figure 6 A top view of the back panel and side panel provided for another embodiment of this application. (See reference) Figure 3 , Figure 4 and Figure 6 In another specific embodiment, the back plate 3 includes a first back plate 301 and a second back plate 302. Both the first back plate 301 and the second back plate 302 are L-shaped structures and are symmetrically arranged. The first back plate 301 includes a side wall 31, and the second back plate 302 includes a second side wall 32. The first side wall 31 and the second side wall 32 are parallel and spaced apart by a preset distance. This preset distance can be the thickness of the truss 400. The first side wall 31, the second side wall 32, and the two side plates 1 are parallel to each other. The side plate 1 includes a first side plate 101 and a second side plate 102. The first side wall 31 and the first side plate 101 are spaced apart by a preset distance, and the second side wall 32 and the second side plate 102 are spaced apart by a preset distance. Therefore, there is a small deformation space A between the first side wall 31 and the first side plate 101, and there is also a small deformation space A between the second side wall 32 and the second side plate 102. Compared to the anti-blocking blocks whose side plates are directly connected to the truss 400, the embodiments of this application provide two L-shaped back plates connected to the truss 400, which makes the anti-blocking blocks have better energy absorption effect and higher strength.

[0034] Figure 7 A side view of a guardrail unit provided in one embodiment of this application, as shown below. Figure 7As shown, in one embodiment, the guardrail's protective beam 300 is a corrugated plate, which includes wave crests n and wave troughs m spaced apart along the extension direction of the post 200. The two side plates 1 each include a protrusion 12 adapted to the shape of the raised area on the back side of the corrugated plate. In this embodiment, the protective beam 300 can specifically be a three-wave protective beam, having two wave troughs m and three wave crests n. The two wave troughs m protrude towards the side where the anti-blocking block is located, and the three wave crests n protrude towards the side away from the anti-blocking block. The protrusion 12 is connected to the outer wall of the upper wave trough m of the two wave troughs m. The protrusion 12 has an inclined edge that fits against the outer wall of the upper wave trough m, improving the support strength of the protective beam 300. The vertical projection of the connecting plate 5 onto the side plate is located between the protrusion 12 and the back plate 3. The anti-blocking block also includes two connecting plates 5, each connecting plate 5 being connected to a side plate 1. The connecting plates 5 are used to connect the guardrail's protective beam 300. Specifically, the connecting plate 5 is connected to two trough sections m.

[0035] In one embodiment, the aforementioned anti-blocking block is made of Q235 steel.

[0036] Please refer to Figure 3 In one embodiment, the back plate 3 and the connecting plate 5 do not overlap in a direction perpendicular to the back plate 3. Specifically, the connecting plate 5 extends outward from the side plate 1, resulting in a larger overlap area between the anti-blocking block and the protective beam 300, thereby increasing the support strength of the protective beam 300.

[0037] In one embodiment, the upper edge of the connecting plate 5 is located between the upper edge and the lower edge of the side plate, and the lower edge of the connecting plate 5 is lower than the lower edge of the side plate.

[0038] In one embodiment, each side plate is provided with a plurality of first mounting holes 11, which are spaced apart and arranged along the extension direction of the through groove. The plurality of first mounting holes 11 are connected to the truss 400, improving the reliability of the connection between the anti-blocking block and the truss 400. The aforementioned first side wall 31 and second side wall 32 are provided with through holes corresponding to the first mounting holes 11. The truss 400 is also provided with through holes corresponding to the first mounting holes 11. During assembly, the truss 400 is placed in the through groove, and then long screws are sequentially passed through the first side plate 101, the first side wall 31, the truss 400, the second side wall 32, and the second side plate 102, and then secured with nuts.

[0039] In one embodiment, the connecting plate 5 is provided with a plurality of second mounting holes 51, which are spaced apart and arranged along the extension direction of the through groove. Correspondingly, each trough of the protective beam 300 is provided with a third mounting hole 52. The distance 'a' between two adjacent second mounting holes 51 is equal to the distance 'b' (the distance between two troughs) between two adjacent third mounting holes 52. When installing the three-wave protective beam, the third mounting holes 52 of the protective beam 300 are aligned one-to-one with the second mounting holes 51 of the anti-blocking block, and then screws are inserted for fixation.

[0040] In one embodiment, the top plate 2, back plate 3, and side plates are an integral structure. This reduces the likelihood of rainwater entering the interior of the barrier block.

[0041] Please continue to refer to this. Figure 7 On the other hand, embodiments of this application also provide a guardrail unit applied to the end of a guardrail across a ditch. The guardrail unit includes a post 200, a truss 400, a protective beam 300, and a blocking block 100 as described in any of the above embodiments. One end of the truss 400 is connected to the post, and the other end is connected to the through groove 10 of the blocking block 100. The protective beam 300 is installed on the side of the blocking block facing away from the truss 400.

[0042] In the above embodiments, the protective beams 300 of the multiple guardrail units are connected end to end to form the end of the guardrail across the ditch. Because the anti-blocking block 100 has a good energy absorption effect and a reliable connection with the truss 400, the safety of the end of the guardrail across the ditch is improved, thereby enhancing the safety of the guardrail at the road cut-and-fill junction.

[0043] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A chock, characterized in that A truss and a guard beam for connecting a guardrail, the guardrail comprising a post, one end of the truss being connected to the post and the other end being connected to the guard block; The guard block comprises a top plate, a back plate and two opposite side plates, the top plate fixing the top of the two side plates, the back plate fixedly connecting the two side plates and the top plate, the top plate, the back plate and the side plates forming a semi-enclosed structure, each of the side plates being provided with a connecting plate at an end away from the back plate, the connecting plate being parallel to the back plate, the connecting plate being used for connecting the guard beam; the guard block being provided with a through groove on a side away from the connecting plate, the through groove extending in the same direction as the post, the truss being fixedly installed in the through groove.

2. The anti-chopping block of claim 1, wherein, The guard beam is a corrugated plate, the corrugated plate comprising wave crest portions and wave trough portions arranged at intervals along the extending direction of the post, the two side plates each comprising a protruding portion matching the shape of a protruding area on the back side of the corrugated plate, the connecting plate being located between the protruding portion and the back plate in the vertical projection of the side plate.

3. The anti-chopping block of claim 1, wherein, In a direction perpendicular to the back plate, the back plate and the connecting plate do not overlap.

4. The anti-chopping block of claim 1, wherein, Each of the side plates is provided with a plurality of first mounting holes, the plurality of first mounting holes being arranged at intervals and along the extending direction of the through groove.

5. The anti-chopping block of claim 1, wherein, The connecting plate is provided with a plurality of second mounting holes, the plurality of second mounting holes being arranged at intervals and along the extending direction of the through groove.

6. The anti-chopping block of claim 1, wherein, The top plate, the back plate and the side plates are of an integral structure.

7. The anti-chopping block of claim 1, wherein, An upper edge of the connecting plate is located between an upper edge of the side plate and a lower edge of the side plate, and a lower edge of the connecting plate is lower than the lower edge of the side plate.

8. A barrier unit, characterised in that The guardrail comprises a post, a truss, a guard beam and the guard block according to any one of claims 1-7, one end of the truss being connected to the post and the other end being connected to the through groove of the guard block, the guard beam being installed on a side of the guard block away from the truss.

9. A fence unit according to claim 8, characterised in that The guard beam is a three-wave guard beam.

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