A high-strength anti-collision guardrail that is easy to assemble and its assembly process

Abstract

The present invention discloses a high-strength anti-collision guardrail and an assembly process thereof that are easy to assemble. The guardrail comprises a concrete base, a column and a cross bar arranged on the concrete base; the column and the cross bar are connected by bolt fasteners; the nut of the bolt fastener is rectangular; bolt holes are provided on the column, and a sinker matching the size of the nut is provided on the contact surface between the column and the cross bar; the cross bar is a hollow circular tube, and a plurality of rectangular holes for nuts to pass through are provided on the tube wall, and the tube wall extends inwardly at the rectangular holes to form a curling edge; a groove for limiting the nut is provided on the curling edge; the long side direction of the rectangular hole is consistent with the long side direction of the sinker; the present invention has a simple structure and is easy to assemble, avoids the strength influence and safety hazards caused by the through slots on the cross bar, ensures the stability of the guardrail structure, and at the same time reduces the construction difficulty and improves the construction efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of guardrail construction, and in particular to a high-strength anti-collision guardrail that is easy to assemble and an assembly process thereof. Background Art

[0002] Guardrails are an important part of roads and bridges, usually located on both sides of the road, which can effectively prevent vehicles from running out of the lane and causing more serious accidents. Common bridge guardrails are mostly based on concrete bases, with several columns set at intervals on the base, and then crossbars or handrails are set between the columns. Bolt fasteners are used to fix the connection between the crossbars and the columns.

[0003] Since the crossbar is a long hollow round tube, the fixing point in the middle of the crossbar is difficult to assemble because it is difficult for people to reach in. Therefore, in order to facilitate on-site construction, the conventional practice is to open a through groove directly from the end of the crossbar along its axis during processing of the crossbar. During installation, first insert the nut of the bolt fastener from the end of the crossbar into the through groove, then adjust the position so that it is aligned with the assembly hole on the column, and finally tighten it to fix it. However, for the crossbar, opening a through groove will greatly damage the integrity of the tube body and affect the strength of the structure, thereby reducing the anti-collision performance of the guardrail and increasing safety hazards. Summary of the invention

[0004] The object of the present invention is to provide a high-strength anti-collision guardrail that is easy to assemble and an assembly process thereof, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A high-strength anti-collision guardrail that is easy to assemble, comprising a concrete base, columns and a cross bar arranged on the concrete base; the columns and the cross bar are connected by bolt fasteners; the bolt fasteners include bolts and nuts, and the nuts are rectangular; bolt holes are provided on the columns, and a sinker matching the size of the nut is provided on the contact surface between the columns and the cross bar; the depth of the sinker is less than the height of the nut; the cross bar is a hollow circular tube, and a plurality of rectangular holes for the nuts to pass through are provided on the tube wall, and the tube wall extends inward at the rectangular holes to form a curling edge; a groove for limiting the nut is provided on the curling edge; the long side direction of the rectangular hole is consistent with the long side direction of the sinker.

[0007] The groove is located on the long side of the rectangular hole, and the nut passes through the rectangular hole and then rotates 90 degrees to fall into the groove and be clamped.

[0008] The rectangular holes are arranged at intervals along the axial direction of the cross bar, and the long side direction of the rectangular holes is consistent with the axial direction of the cross bar.

[0009] The crossbar is an aluminum alloy crossbar, and the upright column is a cast aluminum upright column.

[0010] An assembly process for a high-strength anti-collision guardrail that is easy to assemble comprises the following steps:

[0011] S1. Clamp-on bolt fasteners: insert the bolts into the columns, put on the nuts, pull the bolts to clamp the nuts into the sinks;

[0012] S2. Install the crossbar: align the rectangular hole of the crossbar with the nut and lower the crossbar so that the top of the nut fits into the rectangular hole to limit the crossbar.

[0013] S3, nut limit: the nut passes through the rectangular hole into the crossbar, and after rotation, it is stuck in the groove of the curling edge;

[0014] S4. Tension locking: Tighten the bolts to tension and lock the column and the crossbar.

[0015] The beneficial effects of the present invention are:

[0016] 1. The present invention has a simple structure and is easy to assemble. In practical applications, rectangular holes can be opened at points on the cross bar that need to be fixed according to relevant standards and construction requirements, thereby avoiding the strength impact and safety hazards caused by the through grooves on the entire cross bar, ensuring the stability of the guardrail structure, and reducing the construction difficulty and improving the construction efficiency.

[0017] 2. A rectangular nut and a matching rectangular hole are provided, and a groove is provided at the curled edge of the rectangular hole, so that the nut can be rotated 90 degrees after passing through the rectangular hole and fall into the groove to achieve positioning; a corresponding sinker is provided on the column to facilitate positioning of the nut at the beginning of assembly, and the length direction of the sinker is consistent with the length direction of the rectangular hole, so that the nut can be smoothly inserted into the rectangular hole.

[0018] 3. A sink is provided on the contact surface between the column and the crossbar, and the depth of the sink is less than the height of the nut. Therefore, when the nut is mounted on the sink, the top of the nut will protrude from the contact surface between the column and the crossbar, which can position and support the crossbar when the crossbar is erected, preventing the crossbar from rotating circumferentially and improving the convenience of assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 For the present invention Figure 1 The enlarged schematic diagram of point A in the middle;

[0021] Figure 3 It is a schematic diagram of the structure of the rectangular hole in the present invention;

[0022] Figure 4 Schematic diagram of the assembly of the crossbar and the column in the present invention Figure 1 ;

[0023] Figure 5 Schematic diagram of the assembly of the crossbar and the column in the present invention Figure 2 ;

[0024] Figure 6 Schematic diagram of the assembly of the crossbar and the column in the present invention Figure 3 ;

[0025] Figure 7 Schematic diagram of the assembly of the crossbar and the column in the present invention Figure 4 .

[0026] In the figure: 1. Concrete base; 2. Column; 3. Cross bar; 4. Sink; 5. Rectangular hole; 6. Curled edge; 7. Groove; 8. Bolt; 9. Nut. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0028] See also Figure 1 to Figure 7 In an embodiment of the present invention, a high-strength anti-collision guardrail that is easy to assemble is provided, comprising a concrete base 1, a column 2 and a cross bar 3 arranged on the concrete base 1; the column 2 and the cross bar 3 are connected by bolt fasteners; the bolt fasteners include bolts 8 and nuts 9, and the nuts 9 are rectangular; bolt holes are provided on the column 2, and a sink 4 matching the size of the nut 9 is provided on the contact surface between the column 2 and the cross bar 3; the depth of the sink 4 is less than the height of the nut 9; the cross bar 3 is a hollow circular tube, and a plurality of rectangular holes 5 for the nuts 9 to pass through are provided on the tube wall, and the tube wall extends inward at the rectangular holes 5 to form a curling edge 6; a groove 7 for limiting the nut 9 is provided on the curling edge 6; the long side direction of the rectangular hole 5 is consistent with the long side direction of the sink 4.

[0029] The groove 7 is located on the long side of the rectangular hole 5. After the nut 9 passes through the rectangular hole 5, it rotates 90 degrees and falls into the groove 7 to be clamped.

[0030] The plurality of rectangular holes 5 are spaced apart along the axial direction of the cross bar 3 , and the long side direction of the rectangular holes 5 is consistent with the axial direction of the cross bar 3 .

[0031] The crossbar 3 is an aluminum alloy crossbar, and the column 2 is a cast aluminum column.

[0032] See also Figure 4During assembly, first pass the bolt 8 through the bolt hole of the column 2, put on the nut 9, pull the bolt 8 to make the nut 9 fit into the sinker 4, and then set up the cross bar 3 to align the rectangular hole 5 of the cross bar 3 with the nut 9; since the depth of the sinker 4 is less than the height of the nut 9, the top of the nut 9 will protrude from the contact surface between the column 2 and the cross bar 3, and fit into the rectangular hole 5, which plays a role in positioning and supporting the cross bar 3 and prevents the cross bar 3 from rotating circumferentially; then push the bolt 8 to the upper right to make the nut 9 enter the inside of the cross bar 3, and the length direction of the sinker 4 is consistent with the length direction of the rectangular hole 5, so that the nut 9 can pass through the rectangular hole 5 smoothly.

[0033] See also Figure 5 The tube wall of the crossbar 3 extends inward at the rectangular hole 5 to form a curling edge 6, providing a mounting plane for the nut 9, which is more secure than directly mounting on the inner wall of the arc tube. When the nut 9 passes through the rectangular hole 5 and the bottom of the nut 9 is higher than the top of the curling edge 6, the bolt 8 is rotated 90 degrees, driving the nut 9 to rotate 90 degrees.

[0034] See also Figure 6 A groove 7 is provided at the curling edge 6. After the nut 9 passing through the rectangular hole 5 is rotated 90 degrees, the bolt 8 is pulled to the lower left to make the nut 9 fit into the groove 7, thereby limiting the position of the nut 9 and preventing the nut 9 from rotating in the cross bar 3 and being unable to be fixed during subsequent tightening.

[0035] See also Figure 7 After the nut 9 is limited, screw the bolt 8 to lock the column 2 and the cross bar 3.

[0036] In practical applications, the number and positions of the rectangular holes 5 can be set according to relevant standards and construction requirements. They only need to be opened at preset fixed points without opening through grooves. This causes little damage to the entire cross bar 3, does not affect the structural strength, and is more stable and safe.

[0037] An assembly process for a high-strength anti-collision guardrail that is easy to assemble comprises the following steps:

[0038] S1. Clamp the bolt fastener: insert the bolt 8 into the column 2, put on the nut 9, pull the bolt 8 to clamp the nut 9 into the sink 4;

[0039] S2, erecting the crossbar 3: aligning the rectangular hole 5 of the crossbar 3 with the nut 9 and then lowering the crossbar 3 so that the top of the nut 9 is inserted into the rectangular hole 5 to limit the crossbar 3;

[0040] S3, nut 9 limiting: the nut 9 passes through the rectangular hole 5 and enters the interior of the crossbar 3, and after rotation, it is clamped into the groove 7 of the curling edge 6;

[0041] S4, tension locking: tighten the bolt 8 to tension and lock the column 2 and the cross bar 3.

[0042] The working principle of the present invention is: the rectangular nut 9 and the rectangular hole 5 are matched with each other, and a groove 7 is set at the curling edge 6 of the rectangular hole 5. During assembly, the long side direction of the nut 9 can be changed by a simple rotation action to limit the nut 9, and the bolt fastener is locked and fixed to the column 2 and the cross bar 3. The assembly is simple, and the defect of opening a through groove on the cross bar 3 to affect the structural strength is overcome, the construction difficulty is reduced, and the working efficiency is improved.

[0043] The above is only a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not deviate from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. A high-strength anti-collision guardrail that is easy to assemble, comprising a concrete base, columns and crossbars arranged on the concrete base, characterized in that: The column and the cross bar are connected by bolt fasteners; the bolt fasteners include bolts and nuts, and the nuts are rectangular; bolt holes are provided on the column, and a sinker matching the size of the nut is provided on the contact surface between the column and the cross bar; the depth of the sinker is less than the height of the nut; the cross bar is a hollow circular tube, and a plurality of rectangular holes for the nuts to pass through are provided on the tube wall, and the tube wall extends inward at the rectangular holes to form a curling edge; a groove for limiting the nut is provided on the curling edge; the long side direction of the rectangular hole is consistent with the long side direction of the sinker; the groove is located on the long side of the rectangular hole, and the nut passes through the rectangular hole and is rotated 90 degrees to fall into the groove for clamping; the rectangular holes are arranged at intervals along the axial direction of the cross bar, and the long side direction of the rectangular holes is consistent with the axial direction of the cross bar.

2. The high-strength anti-collision guardrail that is easy to assemble according to claim 1 is characterized in that: The crossbar is an aluminum alloy crossbar, and the upright column is a cast aluminum upright column.

3. The assembly process of the high-strength anti-collision guardrail that is easy to assemble according to claim 1 is characterized in that: The following steps are involved: S1. Clamp-on bolt fasteners: insert the bolts into the columns, put on the nuts, pull the bolts to clamp the nuts into the sinks; S2. Install the crossbar: align the rectangular hole of the crossbar with the nut and lower the crossbar so that the top of the nut fits into the rectangular hole to limit the crossbar. S3, nut limit: the nut passes through the rectangular hole into the crossbar, and after rotation, it is stuck in the groove of the curling edge; S4. Tension locking: Tighten the bolts to tension and lock the column and the crossbar.

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