Anticorrosion flexible guardrail and making method thereof

A technology of flexible guardrails and manufacturing methods, applied to roads, road safety devices, roads, etc., can solve the problems of short service life, low safety, and easy fading of guardrails, and achieve avoidance of secondary damage, good safety performance, and weather resistance Good results

Active Publication Date: 2016-12-07
黑龙江天地承尚科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problems of short service life, low safety, easy corrosion and easy fading of existing guardrails, achieves the direction of overcoming rigidity with softness and decomposing force, improves safety, realizes effective interception, absorb

Method used

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  • Anticorrosion flexible guardrail and making method thereof
  • Anticorrosion flexible guardrail and making method thereof
  • Anticorrosion flexible guardrail and making method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5

[0043] Embodiment 1-5: the making of guardrail board

[0044] Such as figure 1 As shown, the length of the guardrail is 4320mm, the width of the guardrail is 310mm, the wave height is 85mm, and the wall thickness of the guardrail is 6-9mm.

[0045] Table 1:

[0046]

[0047] The production steps are as follows:

[0048] a. Fully mix the additives in the above Table 1 according to the above mass parts, and then add them together with ultra-high molecular weight polyethylene into a twin-screw extruder to extrude and pelletize. The extrusion temperature is 130-230 ° C, and the extrusion speed is 5 -15Hz, extrusion pressure 25-45Mpa;

[0049] b. Fix the aramid tape with a winding machine, transport the particles prepared in step a to the feed port of the co-extrusion screw extruder, and at the same time transport the fixed three aramid tapes or steel wire mesh to the co-extrusion screw extruder The mold distributor of the machine is locked, the extrusion temperature is 130-...

Embodiment 6-10

[0053] Embodiment 6-10: Add the making of a longitudinal rib guardrail board on the waist of W shape:

[0054] Such as figure 2 As shown, the geometric shape design of the anti-corrosion flexible guardrail is 4320mm in length, 310mm in width, 85mm in wave height, and 6-9mm in wall thickness.

[0055] table 3

[0056]

UPE

flame retardant

anti aging agent

Anti-ultraviolet agent

antioxidant

masterbatch

glass fiber

A silane coupling agent

Example 6

100

8

1

1.1

0.8

0.3

10

2

Example 7

100

11

1.5

1

1.1

0.3

10

3

Example 8

100

12

1.1

1.2

1.2

0.3

10

1

Example 9

100

9

1.3

1

1.3

0.3

10

3

Example 10

100

10

1.2

1.1

1.4

0.3

10

1

[0057] The production steps are as follows:

[0058] a. Fully mix the additives in the above Table 3 according to the above mass parts, and then add them to the tw...

Embodiment 11-15

[0063] Example 11-15: Fabrication of anti-blocking blocks

[0064] Such as image 3 As shown, the geometric shape of the guardrail (W type) anti-blocking block is frame type, the design length is 170mm, the two ends are clamp-shaped, the width is rectangular 120mm*140mm, and the thickness of the board wall is 12mm.

[0065] The raw material of embodiment 11-13 and the mass parts that add thereof are:

[0066] table 5

[0067]

[0068] The production steps are as follows: mix the mass parts in Table 5 of the above-mentioned raw materials evenly, and then inject them into an injection molding machine for injection molding. The injection molding temperature is , and the injection molding pressure is .

[0069] The anti-blocking block that above embodiment is made carries out performance test, and result is as follows:

[0070] a. Tensile strength: 280-300Mpa

[0071] b. Elongation at break 80%

[0072] c. Impact strength: 180Kj / m2

[0073] d. Hardness: Shore 72D

[0074...

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Abstract

The invention relates to an anticorrosion flexible guardrail which comprises a guardrail plate, a stand column and an obstruction block. The guardrail plate is formed by compositing a flexible outer layer and a support core layer; the stand column is formed by compositing the flexible outer layer and a middle support layer, the flexible outer layer of the guardrail plate is made of ultra-high molecular weight polyethylene or modified ultra-high molecular weight polyethylene, and the support core layer of the guardrail plate adopts an aramid belt or steel wire mesh; the flexible outer layer of the stand column is made of ultra-high molecular weight polyethylene or modified ultra-high molecular weight polyethylene, and the middle support layer of the stand column adopts a steel plate mesh. According to the anticorrosion flexible guardrail, the flexible guardrail plate, the stand column and the obstruction block are subjected to primary shaping through coextrusion by adopting modified ultra-high molecular weight polyethylene and the steel wire mesh or the aramid belt, the flexible outer layer of the flexible guardrail plate and the flexible outer layer of the stand column can absorb collision energy and reduce or even avoid secondary damage.

Description

technical field [0001] The invention relates to the field of guardrails, in particular to an anti-corrosion flexible guardrail and a manufacturing method thereof. Background technique [0002] The safety of the guardrail is one of the most important performances, but there are different types, different tonnages, and different speeds of vehicles driving on the expressway. It is not known where the accident occurred and how much energy each collision generates. my country's toll roads have exceeded 160,000 kilometers. In 2006, the Ministry of Transport revised and released the "Code for Design of Highway Traffic Safety Facilities" and "Technical Specifications for Construction of Highway Traffic Safety Facilities", which specifically put forward specific requirements and regulations for the use of expressway guardrails. [0003] The disadvantages of the current rigid concrete guardrails and semi-rigid wave beam guardrails are: almost no deformation, great damage to vehicle m...

Claims

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Application Information

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IPC IPC(8): E01F15/04
CPCE01F15/0453
Inventor 何清江高永涛林礼财
Owner 黑龙江天地承尚科技有限公司
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