Extending protective fence

Abstract

The utility model belongs to the technical field of highway protective guard equipment, and particularly relates to an abduction protective guard. Comprising a guardrail body spanning a ditch from one side of an obstacle to the road surface side, a plurality of cantilever supports and connecting supports. The connecting support comprises a connecting part and a first stand column connected with the connecting part, the connecting part is connected with the guardrail body located on one side of the barrier body, and the first stand column is installed on one side of the barrier body; the cantilever support comprises a cantilever support and a second stand column connected with the cantilever support, and the second stand column is installed on one side of the obstacle body and connected with the guardrail body spanning over a ditch or on the side of the road surface through the cantilever support. The cantilever support is additionally arranged, so that the guardrail crossing the ditch section is still supported, the strength requirement is met, and the safety performance is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of highway guardrail equipment, and in particular relates to an outward-extending guardrail. Background Art

[0002] Drainage ditches are basically set up on both sides of the expressway section, and the ditch is located between the obstacle 91 and the expressway road surface 93. There is no corresponding guardrail solution across the drainage ditch in the design specification, resulting in a variety of treatment methods for the drainage ditch guardrail, such as anchoring the guardrail into the ground and adding a circular arc head at the upstream end of the guardrail, which can meet certain anti-collision performance, but the anti-collision level cannot meet the requirements of the specification. Due to the current guardrail across the ditch, such as Figure 1 As shown, it is connected to the road surface 93-ditch 92-obstacle 91 (mountain), and the guardrail is connected to the ground through columns. As for the guardrail 921 across the ditch section, there is currently no supporting connection, that is, only the part of the guardrail located at the obstacle body is supported by columns and the part located at the road surface is supported by columns. In this way, if an accident occurs, the car will crash into the guardrail from the guardrail across the ditch section, and it will directly destroy the guardrail and break the guardrail (due to the lack of column support). The broken guardrail will still lead to a serious accident in which the guardrail is inserted into the car. Utility Model Content

[0003] The purpose of the utility model is to provide an outward-extending guardrail, which adds a cantilever bracket so that the guardrail across the ditch section is still supported, meets the strength requirements, and greatly improves the safety performance.

[0004] Based on this, the utility model provides an outward extension guardrail, including a guardrail body that spans the ditch from one side of the obstacle to the road side, a plurality of cantilever brackets and a connecting bracket;

[0005] The connecting bracket includes a connecting portion and a first column connected to the connecting portion, wherein the connecting portion is connected to a guardrail body located at one side of the obstacle body, and the first column is installed at one side of the obstacle body;

[0006] The cantilever bracket comprises a cantilever frame and a second column connected to the cantilever frame. The second column is installed on one side of the obstacle body and is connected to a guardrail body spanning over the ditch or on the road side through the cantilever frame.

[0007] In the outward extension guardrail as described above, the plurality of cantilever brackets are arranged at equal intervals along the length direction of the guardrail body.

[0008] In the outward extension guardrail as described above, the cantilever frame is a V-shaped frame, which includes a fixed frame connected to the second column and a movable frame sleeved on the fixed frame, and one end of the movable frame is connected to the guardrail body.

[0009] In the outward extension guardrail as described above, the fixed frame adopts two C-shaped beams arranged at an angle relative to each other, and the inner side surfaces of the two C-shaped beams relative to each other form an inner groove for mounting the movable frame. The movable frame can extend into the inner groove and can slide along the inner groove. The upper end and / or lower end surface of the C-shaped beam is also provided with a buffer connection structure for fixing the movable frame.

[0010] In the outward extension guardrail as described above, the cross section of the movable frame is also C-shaped, and a connecting cross bar is further provided at one end of the fixed frame that is butt-jointed with the movable frame.

[0011] In an outward extension guardrail as described above, the buffer connection structure includes a plurality of connection holes arranged on the upper end surface of the C-beam and spaced apart along its length direction, a diamond-shaped self-collapsing hole located between the plurality of connection holes, and a connecting piece for passing through the connection hole and connecting to a movable frame in the inner groove.

[0012] In the outward extension guardrail as described above, the angle of the fixed frame is greater than or equal to 30°, and the opening width of the movable frame is less than or equal to 1 m.

[0013] According to the above-mentioned outward extension guardrail, a connection position connected to the cantilever bracket is provided on the peripheral side end surface of the second column close to the upper part, and the connection position includes three first connection holes arranged along the two opposite end surfaces thereof in the transverse direction and two second connection holes arranged along the two opposite end surfaces thereof in the longitudinal direction, the three first connection holes are arranged at intervals in the vertical direction, the two second connection holes are arranged at intervals in the vertical direction, and the three first connection holes and the two second connection holes are staggered in the vertical direction;

[0014] A U-shaped connecting portion is provided at the end of the cantilever bracket, and the U-shaped connecting portion can be sleeved on the outer side of the second column and matched with the second column. The U-shaped connecting portion is provided with a first mounting hole corresponding to the position and number of the first connecting hole, and a second mounting hole corresponding to the position and number of the second connecting hole.

[0015] In the outward extension guardrail as described above, the guardrail body includes a plurality of connectable guardrail units, and each guardrail unit is provided with at least one set of the cantilever brackets, and the guardrail unit at the front end is also connected to the connecting bracket.

[0016] In the outward extension guardrail as described above, the end of the guardrail unit is provided with five splicing holes arranged from top to bottom.

[0017] Implementing the embodiments of the utility model has the following beneficial effects:

[0018] 1. The utility model provides an outward-extending guardrail. Through optimized design, the cantilever bracket and the connecting bracket are installed on one side of the obstacle body, thereby eliminating the adverse effects of the guardrail on the road section of the road surface on driving, and can ensure that even the guardrail crossing over the ditch has a connecting support, which greatly improves the overall strength of the guardrail body, solves the defects of the existing guardrail production and installation being restricted by the drainage ditch, reduces the installation cost, improves the installation efficiency, and ensures the protection quality of the outward-extending guardrail.

[0019] 2. The utility model's cross-ditch guardrail adopts a V-shaped structure with a large suspension distance, and the suspension distance range can reach 0.5-2 meters, which meets the size application of existing ditches. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic diagram of a ditch-crossing guardrail in the prior art;

[0022] Figure 2 A schematic diagram of an application scenario of an outward extension guardrail provided by an embodiment of the utility model;

[0023] Figure 3 A schematic diagram of an outward extension guardrail provided in an embodiment of the utility model;

[0024] Figure 4 It is a partial connection diagram of the guardrail body;

[0025] Figure 5 For the explosion of cantilever bracket Figure 1 ;

[0026] Figure 6 For the explosion of cantilever bracket Figure 2 . DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figures 2 to 6As shown, an embodiment of the utility model provides an outward-extending guardrail, comprising a guardrail body 1 spanning a ditch 92 from one side of an obstacle body 91 to a side of a road surface 93, a plurality of cantilever brackets 2 and a connecting bracket 3; the connecting bracket 3 comprises a connecting portion 31 and a first column 32 connected to the connecting portion 31, the connecting portion 31 is connected to the guardrail body 1 located on one side of the obstacle body 91, and the first column 32 is installed on one side of the obstacle body 91; the cantilever bracket 2 comprises a cantilever frame 21 and a second column 22 connected to the cantilever frame 21, the second column 22 is installed on one side of the obstacle body 91, and is connected to the guardrail body 1 spanning above the ditch 92 or on the side of the road surface 93 through the cantilever frame 21. Through optimized design, the cantilever bracket and the connecting bracket are installed on one side of the obstacle body, eliminating the adverse effects of the guardrail on the road section on driving, and ensuring that even the guardrail crossing over the ditch has a connecting support, which greatly improves the overall strength of the guardrail body, solves the defects of the existing guardrail production and installation being restricted by the drainage ditch, reduces the installation cost, improves the installation efficiency, and ensures the protection quality of the outward-facing guardrail.

[0029] In the embodiment of the utility model, it is equivalent to having a cantilever bracket 2 connected to the guardrail 921 across the ditch section, thereby improving the strength of this section of the guardrail. Specifically, the multiple cantilever brackets 2 are arranged at equal intervals along the length direction of the guardrail body 1. The guardrail body 1 in this solution refers to one end that is set across the ditch, which is in an inclined posture, that is, it crosses the ditch obliquely from one side of the obstacle body 91 to a section of the road surface. In practice, the rear end of a section of the guardrail on the road surface will continue to connect with a protective guardrail extending parallel to the road surface at one end, and the protective guardrail is generally directly connected to the road surface through a column. Therefore, this solution is to set equidistantly connected cantilever brackets 2 for the guardrail body at the crossing end, thereby improving the strength of this section. Even if a car crash occurs, the guardrail of this section is not easy to break or be damaged.

[0030] In the embodiment of the utility model, the installation according to the terrain is fully considered, and the cantilever bracket 2 is integrally installed on one side of the obstacle body 91 for easy fixation. Specifically, the cantilever frame 21 is a V-shaped frame, which includes a fixed frame 211 connected to the second column 22 and a movable frame 212 sleeved on the fixed frame 211, and one end of the movable frame 212 is connected to the guardrail body 1. A V-shaped structure with a large overhang is adopted, and the overhang range is 0.5-2 meters. The role of the large overhang V-shaped guardrail structure is to solve the defects of the existing guardrail production and installation being restricted by the drainage ditch, simplify the on-site installation process of the outreach guardrail, reduce customized components, reduce installation costs, improve installation efficiency, and ensure the protection quality of the outreach guardrail.

[0031] In the embodiment of the utility model, the fixed frame 211 adopts two C-shaped beams arranged at an angle relative to each other, and the inner side surfaces of the two C-shaped beams relative to each other form an inner groove for sleeve-mounting the movable frame 212. The movable frame 212 can extend into the inner groove and can slide along the inner groove. The upper end and / or lower end surface of the C-shaped beam is also provided with a buffer connection structure for fixing the movable frame 212. This solution adopts a C-shaped crossbeam. The open crossbeam can provide good support force. When the force reaches the limit, it will bend in the same direction, effectively controlling the deformation of the guardrail, and,

[0032] The cantilever bracket 2 is designed with an adjustable cantilever length, which is divided into a fixed frame 211 and a movable frame 212, so that the cantilever bracket 2 can adjust the installation slope of the guardrail according to the road speed limit, such as adjusting the installation slope from 1:11 to 1:14 or 1:17 [Highway Traffic Safety Facilities Design Specification JTG D81-2017]. In addition, this scheme designs multiple rows of adjustment holes, and the buffer connection structure includes a plurality of connection holes 41 arranged on the upper end surface of the C-beam and spaced along its length direction, a diamond-shaped self-collapse hole 42 located between the plurality of connection holes 41, and a connector for passing through the connection hole 41 and connecting to the movable frame 212 in the inner groove. The distance of the overhang can be adjusted according to different situations. A self-collapsing long slot hole is designed in the middle of the two holes of the adjustment hole position. When the movable frame 212 is subjected to excessive force, it will shear the fixed frame 211 step by step. The shearing process can slow down the collision speed of the vehicle and reduce the collision energy, thereby reducing the damage caused by the guardrail to the vehicle and the damage to the driver and passengers. The self-collapsing long slot hole can prevent the cantilever bracket from being inserted. Because the cantilever of the cantilever bracket is more than 2 meters long, it will be a relatively dangerous long cantilever in perception. If the cantilever and the corrugated plate guardrail are separated during the collision, insertion may be formed. Therefore, the self-collapsing long slot hole is designed so that the cantilever bracket will self-collapse and shorten its length after being subjected to excessive force. Multiple holes are opened on the outer bracket, and the strength is reduced. The design of the reinforcing steel plate strengthens the strength of the cantilever bracket and also ensures that the self-collapsing slot hole of the bracket can play a corresponding role. The reinforcing steel plate is set at the center of the cantilever and arranged in parallel with the corrugated plate, which can ensure that both sides collapse at the same time. After the self-collapse reaches the limit, it can support the corrugated plate to ensure the collision strength of the corrugated plate.

[0033] In addition, the cross section of the movable frame 212 is also C-shaped, and the end of the fixed frame 211 that is connected to the movable frame 212 is also provided with a connecting crossbar 2111. The C-shaped crossbeam and the open crossbeam can provide good support force, and will bend in the same direction when the force reaches the limit, effectively controlling the deformation of the guardrail.

[0034] In this solution, the angle of the fixed frame 211 is greater than or equal to 30°, and the opening width of the movable frame 212 is less than or equal to 1m. The stress state is good, and the production cost can be effectively controlled;

[0035] Further, in the embodiment of the utility model, a connection position connected to the cantilever bracket 2 is provided on the peripheral side end surface of the second column 22 near the upper part, and the connection position includes three first connection holes 51 arranged along the two opposite end surfaces thereof in the horizontal direction, and two second connection holes 52 arranged along the two opposite end surfaces thereof in the longitudinal direction, the three first connection holes 51 are arranged at intervals in the vertical direction, the two second connection holes 52 are arranged at intervals in the vertical direction, and the three first connection holes 51 and the two second connection holes 52 are staggered in the vertical direction;

[0036] The end of the cantilever bracket 2 is provided with a U-shaped connection part, and the U-shaped connection part 23 can be sleeved on the outside of the second column 22 and matched with the second column 22. The U-shaped connection part 23 is provided with a first mounting hole corresponding to the position and number of the first connecting hole 51, and a second mounting hole corresponding to the position and number of the second connecting hole 52. The cantilever bracket 2 is connected to the second column with 5 bolts, and a three-vertical and two-horizontal solution is adopted. The cross-fixation locks the cantilever bracket and the column firmly together. During the collision, the cantilever force-bearing column will also be stressed, and the force-bearing process will not be offset, thereby causing the guardrail to be offset, affecting the overall anti-collision effect.

[0037] In addition, a single cantilever bracket 2 uses 4 bolts and a three-wave plate, that is, the guardrail body is connected and fixed, and the 4 bolts are arranged as two on the top and two on the bottom to form a rectangular structure, which can quickly transmit the force exerted on the three-wave plate to the cantilever bracket, and then quickly transmit it to the column.

[0038] In the embodiment of the utility model, the guardrail body 1 includes multiple sections of splicable guardrail units 11, and each section of the guardrail unit 11 is provided with at least one group of the cantilever brackets 2, and the guardrail unit 11 at the front end is also connected to the connecting bracket 3. The end of the guardrail unit 11 is provided with five splicing holes 101 arranged from top to bottom. Local reinforcement technology is adopted. The existing design specifications of the traditional three-wave plate are 16 holes in two ways. After many actual vehicle experiments, the hole position is modified to 10 holes to reduce the stress generated by the hole position, thereby breaking the wave plate, improving the strength of the three-wave plate connection, and enhancing the force of the three-wave plate during the collision. The guardrail with a broken three-wave plate basically has no protective strength.

[0039] The utility model provides an outward-extending guardrail. Through optimized design, a cantilever bracket and a connecting bracket are both installed on one side of an obstacle body, thereby eliminating the adverse effects of the guardrail on driving on the road fill and excavation section, and can ensure that even the guardrail crossing over the ditch has a connecting support, thereby greatly improving the overall strength of the guardrail body, solving the defects of the existing guardrail production and installation being restricted by the drainage ditch, reducing the installation cost, improving the installation efficiency, and ensuring the protection quality of the outward-extending guardrail.

[0040] It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but such information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information. In addition, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. An outward extension guardrail, characterized in that: It comprises a guardrail body (1) spanning a ditch (92) from one side of an obstacle body (91) to the side of a road surface (93), a plurality of cantilever brackets (2) and a connecting bracket (3); The connecting bracket (3) comprises a connecting portion (31) and a first column (32) connected to the connecting portion (31), wherein the connecting portion (31) is connected to a guardrail body (1) located on one side of the barrier body (91), and the first column (32) is installed on one side of the barrier body (91); The cantilever support (2) comprises a cantilever frame (21) and a second column (22) connected to the cantilever frame (21); the second column (22) is installed on one side of the obstacle body (91) and is connected to a guardrail body (1) spanning above the ditch (92) or on the side of the road surface (93) through the cantilever frame (21).

2. The outward extension guardrail according to claim 1, characterized in that: The plurality of cantilever brackets (2) are arranged at equal intervals along the length direction of the guardrail body (1).

3. The outward extension guardrail according to claim 2, characterized in that: The cantilever frame (21) is a V-shaped frame, comprising a fixed frame (211) connected to the second column (22) and a movable frame (212) sleeved on the fixed frame (211), and one end of the movable frame (212) is connected to the guardrail body (1).

4. The outward extension guardrail according to claim 3, characterized in that: The fixed frame (211) is formed of two C-shaped beams arranged at an angle to each other, and the inner side surfaces of the two C-shaped beams facing each other form an inner groove for sleeve-mounting the movable frame (212). The movable frame (212) can extend into the inner groove and can slide along the inner groove. The upper end and / or lower end surface of the C-shaped beam is also provided with a buffer connection structure for fixing the movable frame (212).

5. The outward extension guardrail according to claim 4, characterized in that: The cross section of the movable frame (212) is also C-shaped, and one end of the fixed frame (211) that is butt-jointed with the movable frame (212) is further provided with a connecting cross bar (2111).

6. The outward extension guardrail according to claim 4, characterized in that: The buffer connection structure comprises a plurality of connection holes (41) disposed on the upper end surface of the C-shaped beam and spaced apart along the length direction thereof, a diamond-shaped self-collapsing hole (42) located between the plurality of connection holes (41), and a connection piece for passing through the connection hole (41) and connecting to a movable frame (212) in the inner groove.

7. An outward extension guardrail according to any one of claims 3 to 6, characterized in that: The included angle of the fixed frame (211) is greater than or equal to 30°, and the opening width of the movable frame (212) is less than or equal to 1 m.

8. The outward extension guardrail according to claim 1, characterized in that: A connection position connected to the cantilever bracket (2) is provided on the peripheral side end surface of the second column (22) near the upper part, and the connection position includes three first connection holes (51) arranged along the two opposite end surfaces thereof in the transverse direction, and two second connection holes (52) arranged along the two opposite end surfaces thereof in the longitudinal direction, the three first connection holes (51) are arranged at intervals in the vertical direction, the two second connection holes (52) are arranged at intervals in the vertical direction, and the three first connection holes (51) and the two second connection holes (52) are staggered in the vertical direction; The cantilever bracket (2) has a U-shaped connecting portion at its end, the U-shaped connecting portion (23) can be sleeved on the outside of the second column (22) and matched with the second column (22), and the U-shaped connecting portion (23) has a first mounting hole corresponding in position and number to the first connecting hole (51), and a second mounting hole corresponding in position and number to the second connecting hole (52).

9. The outward extension guardrail according to claim 1, characterized in that: The guardrail body (1) comprises a plurality of sections of splicable guardrail units (11), and each section of the guardrail unit (11) is provided with at least one set of the cantilever brackets (2), and the guardrail unit (11) at the front end is also connected to the connecting bracket (3).

10. The outward extension protection fence according to claim 9, characterized in that: The end of the guardrail unit (11) is provided with five splicing holes (101) arranged from top to bottom.

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