Side-ditch-crossing guardrail outward-extending end fixing device

Abstract

The utility model discloses a side ditch crossing guardrail outward extending end fixing device which is mainly applied to the technical field of wave-shaped beam guardrails and comprises a stand column, a truss, a hoop and a bracket, one side of the truss is detachably connected with the bracket, the other side of the truss is fixedly connected with the hoop, the bracket is used for being connected with the wave-shaped beam guardrail, and the hoop is detachably connected with the stand column. The side-ditch-crossing guardrail outward-extending end fixing device is safe, reliable, convenient to install, high in construction efficiency, capable of effectively shortening the construction period and capable of absorbing vehicle collision energy during use and reducing damage to vehicles and personnel, parts are connected through bolts, the original shape can be restored only by replacing part of the parts after collision, and the side-ditch-crossing guardrail outward-extending end fixing device is convenient to use. The maintenance cost of a maintenance unit is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of corrugated beam guardrails, in particular to a device for fixing the outward-extended end of a cross-ditch guardrail. Background Art

[0002] A corrugated guardrail is a type of guardrail designed for highway collision prevention. It utilizes deformation in the foundation, columns, and beams to absorb collision energy and force out-of-control vehicles to change direction and return to their normal course, preventing them from running off the road. This protects vehicles and passengers and minimizes damage caused by accidents. Corrugated guardrails are categorized by crashworthiness level, including C, B, A, and Am. Each specification features different guardrail panel dimensions, column specifications, and accessories.

[0003] Application No.: 2022220330362 discloses a truss-type corrugated beam guardrail structure. By setting a combination of truss columns, cantilever trusses spanning the roadside drainage ditch, steel pipes and barrier blocks, it is equivalent to the columns being able to retreat a certain distance when encountering areas such as ditches where piles cannot be driven, so that the columns can safely fall within the area where piles can be driven. It is suitable for situations where even in situations where roadside drainage ditch areas where piles cannot be driven, the ends of the corrugated beam guardrails can be arranged into trumpet-shaped induction entrances with a certain slope, thereby eliminating the safety hazards of the ends of the corrugated beam guardrails and thus improving the protective function of the guardrail.

[0004] The above technical solution solves the problem of installation of drainage ditch guardrails, but the following problems still exist: 1. The installation is not convenient enough. The upper chord and the lower chord are connected to the truss columns by bolts. During the installation process, the ends of the corrugated beam guardrail are extended outward at a certain slope. The angle between the truss column and the upper chord and the lower chord needs to be adjusted according to the slope. The screw holes need to be kept perpendicular to the ditch to ensure that the truss column and the upper chord and the lower chord are installed correctly. Once the position of the truss column screw holes is not ideal, it is difficult to adjust them again; 2. When a vehicle collides with the corrugated beam guardrail, the collision energy absorption effect is poor, and there is a lack of protection measures for vehicles and passengers; 3. Maintenance is difficult. There are many parts in the above technical solution, and the overall strength is average. After a collision, most parts will be deformed, and replacement is difficult, which increases maintenance costs. Utility Model Content

[0005] The utility model provides a device for fixing the outward end of a cross-ditch guardrail, which solves the problems of difficult installation, poor energy absorption effect, difficult maintenance and high maintenance cost of existing cross-ditch guardrail outward end fixing devices.

[0006] The technical solution of the utility model is: a device for fixing the outward end of a cross-ditch guardrail, comprising a column, a truss, a hoop, and a bracket. One side of the truss is detachably connected to the bracket, and the other side is fixedly connected to the hoop. The bracket is used to connect the corrugated beam guardrail, and the hoop is detachably connected to the column.

[0007] Preferably, the truss main frame is a right-angled trapezoid, with reinforcing beams between the two waists and the upper and lower bottoms, the upper bottom is detachably connected to the bracket, and the lower bottom is welded with a hoop.

[0008] Preferably, the truss is made of a square tube with a length of 70 mm, a width of 50 mm and a wall thickness of 4 mm.

[0009] Preferably, the column is made of a round tube with a diameter of 140 mm and a wall thickness of 4.5 mm.

[0010] Preferably, the lower part of the front end of the bracket has a straight flange and the upper part has an oblique flange. There are waist-shaped holes on the straight flange and the oblique flange, and bolts are used to pass through the waist-shaped holes to connect with the corrugated beam guardrail. The rear end of the bracket has a groove, and there is a waist-shaped hole perpendicular to the direction of the groove. The groove fits with the upper bottom of the truss and is connected by bolts.

[0011] Preferably, the size of the waist-shaped hole is 18mm*22mm.

[0012] Preferably, the columns, trusses and clamps are made of ordinary carbon structural steel.

[0013] Preferably, the embedding depth of the column is not less than 1100 mm.

[0014] Preferably, the cross section of the bracket is in a concave shape and is formed by bending and welding a steel plate with a wall thickness of 4 mm.

[0015] The principle of the utility model: In order to solve the problem of difficulty in installing the fixing device of the outward-extending end of the cross-ditch guardrail, the utility model adopts the following technical solutions to solve the above problems. The utility model is composed of four parts: column, truss, hoop and bracket. Each part is formed separately, wherein the truss and the hoop are welded and formed, and the hoop and the column can be connected at any angle, solving the limitation of the existing technology that the position of the screw hole of the truss column needs to be perpendicular to the ditch, reducing the difficulty of installation and improving the efficiency of installation. The components are connected by bolts and waist-shaped holes, with scientific redundancy, which is convenient for operators to adjust according to the actual situation. According to the field conditions, the connection dimensions of the components are adjusted to further improve the installation efficiency. The utility model adopts the method of deformation absorption of energy during collision by the bracket, which reduces the transmission of collision energy to vehicles and personnel and reduces economic losses. The cross section of the bracket is "concave". Compared with other components, the deformation of this component is larger during collision and has the conditions for deformation absorption. The utility model has fewer components, and the columns, trusses and hoop structures are higher in strength. The deformation after collision is small. Only the bracket has a large deformation and needs to be replaced after collision. The components are connected by bolts, which is convenient for replacement, low in maintenance cost, and convenient and quick maintenance.

[0016] The beneficial effects of the utility model are as follows: a fixing device for the outward-extending end of a cross-ditch guardrail is safe and reliable, easy to install, has high construction efficiency, effectively shortens the construction period, can absorb the energy of vehicle collisions when in use, and reduces damage to vehicles and personnel. The components are connected by bolts, and after a collision, only some components need to be replaced to restore the original state, effectively reducing the maintenance cost of the maintenance unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is the main view of the utility model;

[0019] Figure 3 This is the left side view of the utility model;

[0020] Figure 4 This is a top view of the utility model;

[0021] In the figure, 101-column, 102-truss, 103-hoop, 104-bracket, 1041-straight flange, 1042-oblique flange, 1043-groove. DETAILED DESCRIPTION

[0022] The specific implementation of the utility model is as follows: Figure 1 、 Figure 2 、 Figure 3 、 Figure 4As shown, a device for fixing the outward-extending end of a ditch-crossing guardrail includes a column 101, a truss 102, a clamp 103, and a bracket 104. One side of the truss 102 is detachably connected to the bracket 104, and the other side is fixedly connected to the clamp 103. The bracket 104 is used to connect to the corrugated beam guardrail, and the clamp 103 is detachably connected to the column 101. In this embodiment, the size of each component can be selected according to the crashworthiness level to meet the corresponding crashworthiness level requirements. Each component can be prefabricated in advance according to the construction drawings. After each component is transported to the construction site, it can be installed in sections, improving construction efficiency and shortening the construction period.

[0023] Specifically, such as Figure 1 、 Figure 2 、 Figure 3 As shown, the main frame of the truss 102 is a right-angled trapezoid, with reinforcement beams between the two sides and the upper and lower bases. The upper base is detachably connected to the bracket 104, and the lower base is welded to a clamp 103. In this embodiment, the size of each truss 102 can be adjusted based on the slope and outward expansion, and the reinforcement beams are adjusted accordingly. The trusses 102 are prefabricated using welding, resulting in high structural strength, resistance to deformation after collisions, and reusability, reducing maintenance costs for maintenance units.

[0024] Specifically, the truss 102 is made of a square tube with a length of 70 mm, a width of 50 mm, and a wall thickness of 4 mm. Relevant experiments have shown that the truss 102 made of the square tube with the above dimensions can achieve a strength of above grade A for anti-collision, and is safe and reliable.

[0025] Specifically, the column 101 is made of a round tube with a diameter of 140 mm and a wall thickness of 4.5 mm. The column 101 made of the square tube with the above dimensions can achieve a strength of anti-collision grade A or above, and is safe and reliable.

[0026] Specifically, such as Figure 3 、 Figure 4 As shown, the bracket 104 has a straight flange 1041 at the lower front end and an oblique flange 1042 at the upper end. Both the straight flange 1041 and the oblique flange 1042 have waist-shaped holes through which bolts are passed to connect to the corrugated beam guardrail. The bracket 104 has a groove 1043 at the rear end, with waist-shaped holes perpendicular to the groove 1043. The groove 1043 fits against the upper bottom of the truss 102 and is bolted to the bracket 104. The bracket 104 with the above structure can be quickly connected to the truss 102 and the corrugated beam guardrail via bolts, improving installation efficiency.

[0027] Specifically, the waist hole size is 18mm*22mm. The waist hole of the above size can be used for M16 bolt connection, ensuring the connection strength and ensuring the safety and reliability of the corrugated beam guardrail.

[0028] Specifically, the columns 101, trusses 102, and hoop 103 are made of ordinary carbon structural steel. The columns 101, trusses 102, and hoop 103 made of ordinary carbon structural steel have high structural strength and low manufacturing cost.

[0029] Specifically, the embedding depth of the pillar 101 is not less than 1100 mm. In this embodiment, the embedding depth is not less than 1100 mm, which can achieve a strength of anti-collision grade A or above, and is safe and reliable.

[0030] Specifically, such as Figure 4 As shown, the bracket 104 has a concave cross-section and is formed by bending and welding 4mm thick steel plates. In this embodiment, the bracket 104 has a certain degree of deformation ability, which absorbs the energy of the collision through deformation, reducing damage to the vehicle and personnel, and reducing economic losses.

[0031] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A device for fixing the outward end of a ditch-crossing guardrail, comprising a column (101), characterized in that: The invention also comprises a truss (102), a hoop (103), and a bracket (104); one side of the truss (102) is detachably connected to the bracket (104), and the other side is fixedly connected to the hoop (103); the bracket (104) is used to connect the corrugated beam guardrail; the hoop (103) is detachably connected to the column (101).

2. The device for fixing the outward end of a ditch guardrail according to claim 1, characterized in that: The main frame of the truss (102) is a right-angled trapezoid, with reinforcement beams between the two waists and the upper and lower bases. The upper base is detachably connected to the bracket (104), and the lower base is welded with a hoop (103).

3. The device for fixing the outward end of a ditch guardrail according to claim 2, characterized in that: The truss (102) is made of a square tube with a length of 70 mm, a width of 50 mm and a wall thickness of 4 mm.

4. The device for fixing the outward end of a ditch guardrail according to claim 1, characterized in that: The column (101) is made of a round tube with a diameter of 140 mm and a wall thickness of 4.5 mm.

5. The device for fixing the outward end of a ditch guardrail according to claim 1, characterized in that: The lower part of the front end of the bracket (104) is provided with a straight flange (1041), and the upper part is provided with an oblique flange (1042). The straight flange (1041) and the oblique flange (1042) are provided with waist-shaped holes, and bolts are passed through the waist-shaped holes to connect with the corrugated beam guardrail. The rear end of the bracket (104) is provided with a groove (1043), and a waist-shaped hole is provided perpendicular to the groove (1043). The groove (1043) is fitted with the upper bottom of the truss (102) and connected by bolts.

6. A device for fixing the outward end of a ditch guardrail according to claim 5, characterized in that: The size of the waist-shaped hole is 18mm*22mm.

7. The device for fixing the outward end of a ditch guardrail according to claim 1, characterized in that: The columns (101), trusses (102) and hoop (103) are made of ordinary carbon structural steel.

8. The device for fixing the outward end of a ditch guardrail according to claim 1, characterized in that: The embedding depth of the column (101) is not less than 1100 mm.

9. The device for fixing the outward end of a ditch guardrail according to claim 5, characterized in that: The cross section of the bracket (104) is in the shape of a "concave" character and is formed by bending and welding a steel plate with a wall thickness of 4 mm.

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