Guardrail support components and environmentally friendly buffer beams for highway mobile guardrails

Abstract

A guardrail support assembly and an environmentally friendly buffer beam highway movable guardrail, the guardrail support assembly includes a mounting column assembly and a base; the mounting column assembly includes a jacket assembly and a movable column tube that can be placed in the jacket assembly, the jacket assembly is composed of an outer column tube and a box body, the lower end of the outer column tube is mounted on the box body, and the lower end of the movable column tube has a clamp; the base is provided with a locking cavity for locking the clamp; during assembly, the movable column tube is placed in the jacket assembly, the cavity opening at the upper end of the locking cavity of the base corresponds to the through hole at the lower end of the jacket assembly, the upper end of the movable column tube is flush with the upper end of the jacket assembly, and the lower end of the movable column tube extends out of the jacket assembly, when the movable column tube rotates to drive the clamp into the locking cavity, the mounting column assembly and the base are combined into a whole, and when the movable column tube rotates to drive the clamp out of the locking cavity, the mounting column assembly and the base are split into two parts. The present invention is simple and environmentally friendly to install on site, easy to move for later maintenance, and quick to open and close.

Description

Technical Field

[0001] The invention discloses a movable guardrail support component for a highway center dividing strip and a movable highway guardrail. Technical Background

[0002] With the rapid growth of my country's economy and the rapid development of the transportation industry, highways, bridges and urban expressways of various grades have been built and opened to traffic. The smoothness of the roads has led to a geometric increase in the number of cars. Correspondingly, the frequency of traffic accidents has also increased. People have higher and higher requirements for the safety of road traffic safety facilities. The median guardrails of highways, bridges and urban expressways of various grades have been upgraded from Class A to Class SB. The SB-level movable guardrails currently used in the market require excavation and pouring of column foundations, pre-embedded column outer casings or drilling holes into column casings. Due to the poor adhesion (sealing) between the asphalt and casing or concrete joints of the asphalt pavement, rainwater seeps into the lower layer and loses the roadbed. When the mobile movable guardrail needs to be opened for emergency and maintenance, it is difficult to pull out the column because of the pebbles or dust that penetrate into the space between the column and the casing, which seriously affects the function of the mobile movable guardrail itself. At the same time, the impact of the disposal of slag generated by excavation, pre-embedding and drilling on the environment is an environmental impact assessment issue that must be considered. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the current prior art and to provide a guardrail support assembly with reasonable structural design, economical and practical, easy to open, close and move; no damage to the road surface, environmental protection, convenient later maintenance and low cost.

[0004] Another object of the present invention is to provide an environmentally friendly buffer beam highway movable guardrail, which is a universal highway, urban expressway, bridge median strip or opening movable guardrail.

[0005] The technical solution of the present invention is: a guardrail support assembly, characterized in that: it includes a mounting column assembly and a base; the mounting column assembly includes a jacket assembly, a movable column tube that can be placed in the jacket assembly, the jacket assembly is composed of an outer column tube located at the upper part and a box body located at the lower part, the lower end of the outer column tube is installed on the box body, the cross-section of the box body is larger than the cross-section of the outer column tube, the length of the movable column tube is larger than the length of the jacket assembly, and a clamp is provided at the lower end of the movable column tube; a locking cavity for locking the clamp is provided on the base; during assembly, the movable column tube is placed in the jacket assembly, the cavity opening at the upper end of the locking cavity of the base corresponds to the through hole at the lower end of the jacket assembly, the upper end of the movable column tube is flush with the upper end of the jacket assembly, and the lower end of the movable column tube extends out of the jacket assembly, when the movable column tube rotates to drive the clamp to enter the locking cavity, the mounting column assembly and the base are combined into a whole, and when the movable column tube rotates to drive the clamp to leave the locking cavity, the mounting column assembly and the base are split into two parts.

[0006] The clamping head is a rectangular plate with rounded corners; the protruding portion of the bottom plate surface of the base is two parallel chambers spaced apart, and the two parallel chambers spaced apart form a locking chamber; the distance between the two chambers matches the clamping head.

[0007] The base includes a bottom plate, which has a circle of assembly holes around it that cooperate with fixing bolts. Two symmetrically arranged bent steel plates are provided in the middle of the top of the bottom plate. A locking cavity is formed between the two bent steel plates and the bottom plate. The bent steel plate is composed of a horizontal steel plate and an inclined steel plate. The outer end of the horizontal steel plate is connected to the upper end of the inclined steel plate, and the lower end of the inclined steel plate is connected to the bottom plate. There is a gap between the horizontal steel plates of the two bent steel plates. The inner ends of the horizontal steel plates are respectively connected to the upper ends of a reinforcing plate 301 on both sides, and the lower end of the reinforcing plate is connected to the bottom plate.

[0008] The box body is a prismatic structure, with through holes at both ends. The through hole at the upper end of the box body corresponds to the lower tube opening of the outer column tube, and the through hole at the lower end of the box body corresponds to the notch at the upper end of the card slot of the base.

[0009] The inner cavity of the box body is provided with a trapezoidal flange bracket, and the trapezoidal flange bracket is provided with two horizontally spaced partition boards, and the spacing between the two partition boards corresponds to the clamping plate; when the movable column tube rotates and lifts the clamping plate to be placed on the two partition boards, the movable column tube is positioned on the partition board.

[0010] The box body has a trapezoidal cross section and rolling wheels are arranged at the bottom of the box body.

[0011] An environmentally friendly buffer beam highway movable guardrail includes an energy absorbing tube beam group and a guardrail support assembly as described above. At least two outer column tubes are installed on the box body. At least one group of energy absorbing tube beam groups are symmetrically arranged on both sides of the two outer column tubes to form a movable guardrail unit. The energy absorbing tube beam group consists of more than two energy absorbing tube beams.

[0012] The energy-absorbing tube beam is composed of a small head located on the inner side and a large head located on the outer side. The outer side surface of the large head and the inner side of the small head are vertical planes parallel to each other. The upper and lower side surfaces of the large head are arc-shaped surfaces. The middle part of the arc-shaped surface on the upper side protrudes upward, and the middle part of the arc-shaped surface on the lower side protrudes downward. The upper and lower side surfaces of the small head are planes. Support square tube clamps are symmetrically arranged on both sides of the outer column tube. There are more than two concave grooves in the middle of the vertical plane of the small head of the energy-absorbing tube beam, and the concave grooves are connected to the support square tube clamps through a pin.

[0013] There are at least two movable guardrail units, and the ends of two adjacent movable guardrail units are connected via a connecting piece to form a guardrail frame.

[0014] A wedge-shaped groove plate is provided at each of the two inner ends of the energy-absorbing tube beam, and a connecting plate is provided at each of the front and rear ends of the box body. The connecting plates at the front and rear ends of the box body are staggered and overlapped with each other, and the wedge-shaped groove plates at the ends of two adjacent energy-absorbing tube beams and the connecting plates at the ends of two adjacent boxes are connected by connecting pieces to form a guardrail frame.

[0015] The present invention provides a universal environmentally friendly buffer beam highway movable guardrail with simple construction, quick opening, convenient movement and SB safety protection level. The movable guardrail of the present invention is designed as a combination unit that is easy to fold and assemble, and the number of combined units can be determined according to the needs of the implementation site.

[0016] The mobile movable guardrail of the present invention is an environmentally friendly buffer beam highway mobile movable guardrail that can be installed at the implementation site without the need for basic construction such as excavation of the road surface, pre-embedded reinforcement, and drilling and embedding sleeves.

[0017] The environmentally friendly buffer beam highway movable bread-shaped energy-absorbing tube beam of the present invention is made of steel pipe. The bread-shaped energy-absorbing steel tube beam absorbs a certain amount of collision energy because its arc surface is deformed in the Z-axis direction by the instantaneous collision energy, which reduces the rebound force of the vehicle collision, improves the safety of the vehicle's accompanying personnel, and greatly increases the safety of the personnel on the vehicle. The mobile guardrail fully meets the SB level protection level requirements.

[0018] The movable guardrail unit of the present invention is composed of a mounting column assembly, a base and an energy-absorbing pipe beam. The structure can be set in the middle of a highway or a bridge for long-term use; it can also be opened to the required length at any time as needed for vehicle passage or road maintenance.

[0019] The environmentally friendly buffer beam movable guardrail of the present invention consists of a flange-fixed locking cavity base (referred to as the base) and a trapezoidal box truss unit fixed by a movable "丄" column: one or more trapezoidal box truss units form a guardrail section of the required length. Each trapezoidal box truss unit consists of a trapezoidal box and a truss on its upper part. The trapezoidal boxes of each trapezoidal box truss unit are connected by bolts, and a connecting plate is placed between the upper trusses and fixed by bolts. The trapezoidal box of each trapezoidal box truss unit has a built-in hollow flange bracket, a trapezoidal steel plate with perforated connecting plates welded at both ends, and universal wheels arranged on the bottom cross beam. Its upper body plane is cut with column penetration holes and its flange bolt connection holes. Each trapezoidal box truss unit truss has a hollow flange column / bread-shaped energy-absorbing steel pipe beam. The hollow holes and flange bolt connection holes of the hollow flange column correspond to the column penetration holes and their flange bolt connection holes on the upper body plane of the trapezoidal box, and are fastened with bolts. Two layers of convex square tubes are welded symmetrically on both sides of the end of the hollow flange column, and the convex square tubes have connection holes vertically. One or more tenon grooves are welded on the side planes at both ends of the bread-shaped energy-absorbing steel pipe, and a concave chuck is welded on the middle side plane and corresponds to the convex square tube at the end of the hollow flange column. One or more parallel horizontal bread-shaped energy-absorbing steel pipes are symmetrically arranged on both sides of the hollow flange column, and are engaged with the convex heads of the hollow flange column in a concave-convex manner and fixed with bolts. The flange-fixed locking cavity base of the present invention contains two parallel concave inner cavities, which are fixed on the road surface in the trapezoidal box by anchor bolts, and the center points thereof correspond to the center points of the hollow flange columns; its two parallel rectangular convex inner cavities are parallel to the inner side surface of the trapezoidal box. The column end of the loose-fitting "丄" column passes through the top flange penetration hole of the trapezoidal bracket in the trapezoidal box into the hollow flange column, and the horizontal rectangular chuck end thereof can be placed in the two parallel convex inner cavities of the flange-fixed locking cavity base, or can be removed from the convex inner cavity. When the movable guardrail needs to be closed, rotate the movable "丄" column from the inside of the hollow flange column end so that the horizontal rectangular chuck end of the movable "丄" column is placed in the concave inner cavity; when the movable guardrail needs to be opened, rotate the loose-fitting "丄" column from the inside of the hollow flange column end so that the horizontal rectangular chuck end of the movable "丄" column is removed from the concave inner cavity and lifted and rotated 90° so that the horizontal rectangular chuck end is placed on the partition of the trapezoidal bracket.

[0020] The flange-fixed locking cavity base and the loose-fitting "丄" column of the present invention do not require road surface excavation and large-area drilling, the on-site installation is simple and environmentally friendly, the construction and maintenance costs are low, and the later maintenance and movement are simple and the opening and closing are fast. Brief Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the environmentally friendly buffer beam movable guardrail of the present invention;

[0022] Figure 2 is Figure 1 the top view of

[0023] Figure 3 Front view of the energy-absorbing pipe beam

[0024] Figure 4 is Figure 3 side view of;

[0025] Figure 5 is Figure 3 top view of;

[0026] Figure 6 Schematic diagram of the structure of connecting plate two

[0027] Figure 7 is Figure 2 of partial enlarged view of;

[0028] Figure 8 is Figure 7 C-C sectional view of;

[0029] Fig. 9 is Figure 1 side view of;

[0030] Fig.10 is Figure 1 A-A sectional view of;

[0031] Fig.11 is Figure 1 B-B sectional view of the connection between unit I parts of;

[0032] Fig.12 Schematic diagram of the structure of the base

[0033] Fig.13 is Fig.12 top view of;

[0034] Fig.14 Front view of the trapezoidal box

[0035] Fig.15 Top view of the trapezoidal box

[0036] Fig.16 Sectional view of the trapezoidal box

[0037] Fig.17 Front view of the hollow flange column

[0038] Fig.18 is Fig.17 top view of;

[0039] Fig.19 Front view of the movable "丄" column

[0040] Fig. 20 is Fig.19 top view;

[0041] Fig.21 It is a schematic diagram of a trapezoidal flange bracket. Specific implementation manner

[0042] Figure 1-21 In it, a flange fixing and locking cavity base (referred to as the base) 3, a movable "丄" column (also called a movable column tube) 4, a hollow flange column (also called an outer column tube) 5, a trapezoidal box body 2, and a bread-shaped energy-absorbing pipe beam 1 form a trapezoidal box body truss unit. The hollow flange column 5 supports the energy-absorbing pipe beam 1, and the hollow flange column 5 is flange-connected and fixed to the trapezoidal box body 2. The trapezoidal box bodies 2 between two or several trapezoidal box body truss units are overlapped with each other through a first connecting plate 6 and fastened with a second bolt 16. A required movable guardrail device group is formed by tenoning a second connecting plate 15 between the upper parts of two adjacent trapezoidal box body truss units and fastening with a first bolt 14.

[0043] The energy-absorbing pipe beam 1 is a single layer or two or more layers that are horizontally parallel. The energy-absorbing pipe beam 1 consists of a small head on the inner side and a large head on the outer side, forming a bread shape or a gourd shape. The outer side of the large head and the inner side of the small head are parallel vertical planes. The upper and lower sides of the large head are arc-shaped surfaces. The middle of the arc-shaped surface on the upper side protrudes upward, and the middle of the arc-shaped surface on the lower side protrudes downward. The upper and lower sides of the small head are flat surfaces. The arc-shaped surface of the large head and the flat surface of the small head are transitioned by an arc surface. The bottom of the trapezoidal box body 2 has universal wheels 4. The convex parts on both sides symmetrically centered on the center line of the flange-fixed locking cavity base 3 are rectangular inner cavities. On both sides symmetrically at the end of the column body of the hollow flange column 5, one or two or more layers of supporting square pipe chucks 9 are horizontally welded. The supporting square pipe chucks 9 are perpendicular to the direction of the trapezoidal box body surface during equipment. There are bolt equipment holes perpendicular to the upper and lower surfaces of the pipe head of the supporting square pipe chuck 9. At the lower end of the hollow flange column 5, a hollow flange 17 with an equipment hole is welded. The hollow diameter of the hollow flange 17 is the same as the inner hole diameter of the column body of the hollow flange column 5 welded to it. One or more column penetration holes and bolt equipment holes are cut on the upper plane of the trapezoidal box body 2. The center point of the column penetration hole coincides with the center point of the hollow flange 17. Inside the trapezoidal box body 2, there is a trapezoidal flange bracket 11. The trapezoidal flange bracket 11 is formed by welding a hollow flange 17 on the upper plane and two trapezoidal steel plates 10 on both sides. Between the two trapezoidal steel plates 10, a spacer 19 made of two horizontally spaced steel plates is welded. The distance between the two spacers 19 corresponds to the rectangular chuck and is used to support the lifted movable sleeve "丄" column 4. The column penetration holes and flange equipment holes on the upper plane of the trapezoidal box body 2 correspond to the hollow and flange equipment holes of the trapezoidal flange bracket 11. Bolts are used to connect and fasten through the flange equipment holes of the trapezoidal flange bracket 11 and through the flange equipment holes of the hollow flange column 5 on the trapezoidal box body 2 and its upper surface. At both ends of the bread-shaped energy-absorbing pipe beam 1, wedge-shaped groove plates 7 with equipment holes are welded on the inner side plane. In the middle of the inner side plane, two concave groove cards 8 with equipment holes are welded. The concave groove cards 8 cooperate with the supporting square pipe chucks 9 of the hollow flange column 5 and are fastened with bolts. The center point of the hollow flange 17 of the trapezoidal flange bracket 11 corresponds to the center point of the penetration hole 20 on the upper surface of the trapezoidal box body 2. Its two trapezoidal steel plates 17 are perpendicularly and tightly fitted and welded to the inner side of the trapezoidal box body. A double-hole connecting plate two 15 is placed between adjacent bread-shaped energy-absorbing pipe beams and fixed with bolts. The concave groove cards 8 of two or more parallel multi-layer bread-shaped energy-absorbing pipe beams and the supporting pipe chucks 9 are engaged with each other and fastened with bolts to form a truss structure. The flange-fixed locking cavity base 3 is precision-cast at one time. The protruding part of the flange surface is two rectangular inner cavity rooms with parallel intervals. The distance between the two rectangular inner cavity rooms fits the rectangular chuck of the movable sleeve "丄" column. The flange-fixed locking cavity base 3 is fixed by screwing the anchor bolt nuts placed on the road surface. Its center point corresponds to the center point of the column penetration hole 20 of the trapezoidal box body 2 and the center point of the hollow flange 17 of the trapezoidal flange bracket 11.At the bottom end of the movable "丄" column 4, a rectangular chuck 18 is welded. The column end is placed inside the hollow flange column 5 through the hollow flange 17 and the column through-hole 20, and the rectangular chuck 18 end is placed inside the flange fixed locking cavity base 3. By rotating the movable "丄" column 4, the rectangular chuck 15 can be placed inside the convex cavity of the flange fixed locking cavity base 3 or moved out. When fixing, place the rectangular chuck of the movable "丄" column 4 between the two convex cavities of the flange convex cavity base and rotate it 90° to lock it. Then rotate the movable "丄" column 4 by 90° and lift it onto the spacer plate 19 of the trapezoidal flange bracket 11. Trapezoidal steel plates 10 are welded to the inner sides of both ends of the trapezoidal box body 2. Two connecting plates one 6 are vertically and horizontally welded to the surface of the trapezoidal steel plate 10, and there are bolt fastening holes on both sides of the connecting plates one 6 and they are overlapped with each other in a staggered manner. A channel-shaped cross beam 12 is welded to the bottom of the trapezoidal box body 2, and each channel-shaped cross beam 12 is equipped with a rolling wheel 13, which is convenient for maintenance and emergency opening and movement. The rolling wheel is a universal wheel.

[0044] When this movable movable guardrail needs to be opened during road maintenance and emergency management, the base 3 left by the center line of the median strip can play the role of a shock absorber to keep the vehicle driving at a low speed when passing through.

[0045] During assembly, the column end of the movable "丄" column 4 is placed inside the hollow flange column 5 from the trapezoidal box body 2, and its chuck 18 end is placed inside the convex cavity of the flange locking cavity base 3 and is clamped. Rotate the upper end of the movable "丄" column 4 by 90° and lift it so that the chuck is placed on the spacer plate 19 of the trapezoidal plate flange bracket 11, and then the trapezoidal box body truss guardrail unit can be moved.

Claims

1. A guardrail support assembly, characterized in that: It includes a mounting column assembly and a base (3); The mounting column assembly comprises a jacket assembly and a movable column tube (4) which can be placed in the jacket assembly. The jacket assembly is composed of an outer column tube (5) located at the upper part and a box body (2) located at the lower part. The lower end of the outer column tube (5) is mounted on the box body (2). The cross section of the box body (2) is larger than the cross section of the outer column tube (5). The length of the movable column tube (4) is larger than the length of the jacket assembly. The lower end of the movable column tube (4) is provided with a clamp (18). A locking cavity for locking the clamp (18) is provided on the base (3); During assembly, the movable column tube (4) is placed in the outer sleeve assembly, the cavity opening at the upper end of the locking cavity of the base (3) corresponds to the through hole at the lower end of the outer sleeve assembly, the upper end of the movable column tube (4) is flush with the upper end of the outer sleeve assembly, and the lower end of the movable column tube (4) extends out of the outer sleeve assembly. When the movable column tube (4) rotates to drive the clamping head (18) into the locking cavity, the installation column assembly and the base (3) are combined into a whole. When the movable column tube (4) rotates to drive the clamping head (18) out of the locking cavity, the installation column assembly and the base (3) are separated into two parts.

2. The guardrail support assembly according to claim 1, characterized in that: The clamping head (18) is a rectangular plate with rounded corners. The protruding portion of the bottom plate surface of the base (3) is two parallel chambers spaced apart from each other, and the two parallel chambers form a locking chamber. The distance between the two chambers matches that of the clamping head (18).

3. The guardrail support assembly according to claim 2, characterized in that: The base (3) comprises a bottom plate, the bottom plate has a circle of assembly holes around its periphery for matching with fixing bolts, two symmetrically arranged bent steel plates are arranged in the middle of the top of the bottom plate, a locking cavity is formed between the two bent steel plates and the bottom plate, the bent steel plate comprises a horizontal steel plate and an inclined steel plate, the outer end of the horizontal steel plate is connected to the upper end of the inclined steel plate, the lower end of the inclined steel plate is connected to the bottom plate, there is a gap between the horizontal steel plates of the two bent steel plates, the inner ends of the horizontal steel plates are respectively connected to the upper ends of a reinforcing plate (301), and the lower end of the reinforcing plate (301) is connected to the bottom plate.

4. The guardrail support assembly according to claim 1, characterized in that: The box body (2) is a prismatic structure, and has through holes at both the upper and lower ends of the box body (2). The through hole at the upper end of the box body (2) corresponds to the lower tube opening of the outer column tube (5), and the through hole at the lower end of the box body (2) corresponds to the notch at the upper end of the card slot of the base (3).

5. The guardrail support assembly according to claim 1, characterized in that: The inner cavity of the box body (2) is provided with a trapezoidal flange bracket (11), and two horizontally spaced partition plates (19) are provided in the trapezoidal flange bracket (11), and the spacing between the two partition plates (19) corresponds to the clamping head (18); when the movable column tube (4) rotates and lifts the clamping head (18) to be placed on the two partition plates (19), the movable column tube (4) is positioned on the partition plates (19).

6. The guardrail support assembly according to claim 1, characterized in that: The box body (2) has a trapezoidal cross section, and a rolling wheel (13) is provided at the bottom of the box body (2).

7. An environmentally friendly buffer beam highway movable guardrail, characterized in that: The invention comprises an energy absorbing tube beam group and a guardrail support assembly as claimed in any one of claims 1 to 6, wherein at least two outer column tubes (5) are mounted on a box body (2), at least one group of energy absorbing tube beam groups are symmetrically arranged on both sides of the two outer column tubes (5) to form a movable guardrail unit, and the energy absorbing tube beam group is composed of more than two energy absorbing tube beams (1).

8. The environmentally friendly buffer beam highway movable guardrail according to claim 7 is characterized by: The energy absorbing tube beam (1) is composed of a small head located on the inner side and a large head located on the outer side. The outer side surface of the large head and the inner side of the small head are vertical planes parallel to each other. The upper and lower side surfaces of the large head are arc-shaped surfaces. The middle part of the arc-shaped surface located on the upper side is convex upward, and the middle part of the arc-shaped surface located on the lower side is convex downward. The upper and lower side surfaces of the small head are planes. Support square tube clamps (9) are symmetrically provided on both sides of the outer column tube (5). The middle part of the vertical plane of the small head of the energy absorbing tube beam (1) has two or more concave clamping grooves (8), and the concave clamping grooves (8) are connected to the support square tube clamp (9) through a pin (14).

9. The environmentally friendly buffer beam highway movable guardrail according to claim 7 is characterized by: There are at least two movable guardrail units, and the ends of two adjacent movable guardrail units are connected via a connecting piece to form a guardrail frame.

10. The environmentally friendly buffer beam highway movable guardrail according to claim 9 is characterized in that: A wedge-shaped groove plate (7) is provided at each of the two inner ends of the energy-absorbing tube beam (1), and a connecting plate (6) is provided at each of the front and rear ends of the box body (2). The connecting plates (6) at the front and rear ends of the box body (2) are mutually offset and overlapped, and the wedge-shaped groove plates (7) at the ends of two adjacent energy-absorbing tube beams (1) and the connecting plates (6) at the ends of two adjacent boxes (2) are connected via connecting pieces to form a guardrail frame.

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