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Asphalt pavement screw

A technology of asphalt pavement and screws, which is applied in the field of public transportation supporting facilities, can solve problems such as the insecure fixation of expansion screws, and achieve the effect of enhancing strength

Inactive Publication Date: 2014-03-12
江苏安美捷交通设施有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of asphalt road screw that can solve the aforementioned problems in view of the problem that the existing road railings pointed out in the background technology are not firmly fixed by steel nails or existing expansion screws.

Method used

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  • Asphalt pavement screw
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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] refer to figure 1 with figure 2 A kind of asphalt road screw shown, this asphalt road screw comprises main rod 1, outer jacket 2, pressure piece 3 and nut 4, and main rod 1 material is the metal material with higher strength, preferably casting steel, described main rod 1 is a columnar rod, the lower end of the main rod 1 is provided with a table 5 for supporting the outer cover 2, the table 5 and the main rod 1 are integrally formed, the middle part of the main rod 1 passes through the inner hole of the outer cover 2, and the main rod 1 The upper part is provided with a threaded section 6, the pressure piece 3 and the nut 4 are arranged on the threaded section 6, two deformation holes 7 are provided on the outer casing 2, and the deformation holes 7 are arranged along the axial direction of the outer casing 2, and the deformation The middle part of the hole 7 is larger than the upper and lower sides of the deformation hole 7, and the position between adjacent deforma...

Embodiment 2

[0020] On the basis of Embodiment 1, in order to tighten the nut 4, the pressing piece 3 and the table top 5 cooperate to squeeze the outer cover 2 from the upper and lower directions of the outer cover 2 respectively, so that the deformation part 8 on the outer cover 2 can be squeezed. Deformation occurs under action, and the deformation hole 7 is an oval deformation hole. The width of the middle part of the elliptical deformed hole is larger than the upper and lower sides, so that a deformed part 8 is formed between two adjacent deformed holes, and the formed deformed part 8 gradually narrows from the upper and lower sides to the middle width, and the deformed part is subjected to After the pressure is deformed, the middle of the deformed part opens to the outside of the main rod, forming deformed teeth 10, which extend into the asphalt layer 9 of the asphalt road, so that the asphalt road screws and the asphalt road form a firm connection, so that the asphalt Pavement screw...

Embodiment 3

[0022] In Embodiment 1, the preferred solution is: the deformation hole 7 is a diamond-shaped deformation hole. The edge of the rhombus-shaped deformation hole is straight, and the edge of the corresponding deformation part is also straight. Using the spatial instability of the parallelogram, the deformation part is easier to bend and deform, and the resistance is stronger when the deformation part enters the asphalt layer. Smaller, deformed teeth are easier to penetrate into the asphalt layer.

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Abstract

The invention relates to an asphalt pavement screw, which comprises a main rod, a jacket, a pressing piece and a nut, wherein the main rod is a cylindrical rod, and a table-board for supporting the jacket is arranged at the lower end of the main rod; the middle of the main rod penetrates through an inner hole of the jacket, and a threaded section is arranged at the upper part of the main rod; the pressing piece and the nut are arranged on the threaded section, and at least two deformation holes are arranged on the jacket; the middle of each deformation hole is larger than the upper and lower sides of each deformation hole, and a deformation part is arranged between the adjacent deformation holes; the width of the middle of each deformation part is smaller than that of the upper and lower sides of the deformation part. After the asphalt pavement screw is assembled, the screw can not be disengaged from an asphalt pavement even when being impacted because of strong bonding force with an asphalt road; the asphalt pavement screw is used to fix a road railing, so that the fastness of road railing assembly can be enhanced.

Description

technical field [0001] The invention relates to the field of public transportation supporting facilities, in particular to an asphalt road screw used for fixing a guardrail on an asphalt road. Background technique [0002] With the continuous improvement of road facilities, guardrails are set up at the separation position between the upper and lower lanes in the middle of the roads in most cities. At the same time, guardrails are also set up between motor vehicle lanes and non-motor vehicle lanes. Bases are set at the bottom of the column of the guardrail. If the steel nail is fixed, the deformation hole should be drilled on the asphalt road first, and then the steel nail should be knocked into the deformation hole, because the outer wall of this steel nail is cylindrical, and the friction force against the ground is small, so it is easy to be damaged by the guardrail. In the event of an external impact, the steel nails are easily detached from the asphalt road, making the r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B13/06E01F15/02
Inventor 蔡建纲
Owner 江苏安美捷交通设施有限公司