What is the deceleration belt? Guizhou traffic line tell you!
Also called Ridge Road, is installed in the vehicle through the reduction of transportation facilities, the shape of strip is also a dot, the main material is rubber, there is metal, usually with a yellow black and white to attract visual attention, make the road slightly arching to achieve the deceleration of the vehicle, the vehicle generally set on the road, industrial and mining enterprises, schools, residential entrance to slow sections and easy to cause traffic accidents Road, is used for the slowdown in motor vehicle speed of the new traffic special security settings. The deceleration belt greatly reduces the occurrence of traffic accidents, and is a new type of special facility for traffic safety. The vehicle is both safe and cushioning in driving, so as to improve the safety of traffic crossing. At present, the deceleration zone has been widely used in highways around the world.
Rubber deceleration belt
It is designed according to the angle principle of the tire and the special rubber on the ground, and is made of special rubber. It is a new special traffic safety device set at the entry of highway crossing, industrial and mining enterprises, schools, residential quarters, etc., which is used for decelerating motor vehicles and non motor vehicles to run at a speed. Compared with the original cement ridge and steel pipe, the rubber deceleration belt has the characteristics of shock absorption, excellent compression resistance, long life, less wear to the car, less noise, yellow and black interphase, and distinct colors, and no need to paint again every year, which is beautiful and generous. After the use of the deceleration belt, it greatly reduces the occurrence of traffic accidents, and is a new type of special facilities for traffic safety.
Composition and general requirements
The rubber deceleration ridge is made up of a rubber decelerating ridge unit between yellow and black.
1.2 General requirements
The rubber deceleration ridge should be formed in one, and the surface should have the stripe to increase the adhesion. Each decelerating ridge unit is supposed to have an antireflective material that is easy to identify at night in the direction of the vehicle. There should be no blowhole on the surface, no obvious scratches and lack of material, the color should be uniform and no flfei. The name of the production unit should be suppressed by the surface of the rubber deceleration ridge. If the bolt is connected to the ground by a bolt, the bolt hole should be a sink. Each unit of the deceleration ridge should be connected in a reliable way.
减速垄单元宽、高方向截面应为近似梯形或弧形。其宽度尺寸应在(300 mm±5 mm)～ (400 mm±5 mm)范围内，高度尺寸应在(25 mm±2 mm)-(70 mm±2 mm)范围内，在公路和城市道路上使用的橡胶减速垄高度与宽度尺寸之比应不大于0.7
The width and high direction section of the deceleration ridge unit should be approximate to the trapezium or arc. The width should be in the range of (300 mm + 5 mm) to (400 mm + 5 mm), and the height should be in the range of (25 mm + 2 mm) - (70 mm + 2 mm). The ratio of rubber deceleration ridge height to width and width should be less than 0.7 on roads and urban roads.
2 pressure resistance performance
整车重量为20 t的双轴汽车以40 km/h的车速通过已在路面固定的橡胶减速垄，试验后，目测检查试样，试验后橡胶减速垄应无任何破损、开裂现象。
A biaxial vehicle with a weight of 20 t is passed through the rubber deceleration ridge which has been fixed on the road at a speed of 40 km/h. After the test, the specimen is inspected visually. After testing, the rubber deceleration ridge should not be damaged or cracked.
3 physical properties
3. 1 扯断伸长率
Rubber decelerationridge surface material elongation shall be not less than 200% in highway and city road use rubber decelerationridge surface material elongation shall be not less than 250%.
3.2 tensile strength
橡胶减速垄表面材料拉伸强度应不小于6.0 MPa，在公路和城市道路上使用的橡胶减速垄表面材料拉伸强度应不小于8.5 MPa
The tensile strength of rubber deceleration surface material should not be less than 6 MPa, and the tensile strength of rubber deceleration ridge surface material on highway and urban road should not be less than 8.5 MPa.
3.3 shore A hardness
The Shaoer A hardness of the rubber deceleration ridge surface material should be within 65-85 range.
3.4 tearing strength
The tear strength of the rubber decelerated ridge surface material should not be less than 20 kN/m
3.5 attrition reduction
橡胶减速垄表面材料的磨耗减量应不大于0.8 cm3/1.61 Km.
The wear reduction of the rubber decelerated ridge surface material should not be more than 0.8 cm3/1.61 Km.
3.6 impact elasticity
The impact elasticity of the rubber decelerated ridge surface material should not be less than 20%
4 inverse reflection performance
The reverse reflection performance of the rubber deceleration unit on the driving direction of the vehicle should not be less than the requirements stipulated in Table 1.
5 adaptability of climate and environment
Under various environmental testing, rubber decelerationridge should be nodiscoloration cracks spalling warping phenomenon, its elongation and tensile strength shall still comply with the requirements of 3.
6 solvent resistance performance
After the rubber deceleration belt is wiped by No. 93 gasoline, there should be no obvious trace of dissolution and destruction.
After rubbing the rubber deceleration ridge with No. 0 diesel, there should be no obvious trace of dissolution and destruction.
After rubbing the rubber deceleration ridge with SAE 5W-30 lubricating oil, there should be no obvious trace of dissolution and destruction.
Problems and development
Before 1997, only foreign companies were producing and selling rubber decelerates in the market. It was equipped with reflective beads. In foreign countries, there is a person called "the policeman lying down", meaning that the vehicle is here, like the police to slow down. At that time, the domestic mainly used cement and cast iron to make deceleration belts. The rubber deceleration has a certain degree of softness, and there is no strong bump in the impact of the vehicle, and the effect of shock absorption and shock absorption is good. In the daytime see the black and yellow phase, the reflection of the reflection of light in the evening, especially striking. Easy to install and easy to maintain. Later, a large number of rubber manufacturers throughout the country mimicked the style.
In the middle of the deceleration belt, there is a small hole in each side, which is the installation hole, and the deceleration belt is fixed to the pavement with the expansion screw. So when the vehicle is rolling down the deceleration zone, the most important place is to install the hole position. The first tear area is the connection hole, so the deceleration slope falls off and the steel nail is exposed. One of the steel nails protruded the road to pierce the wheel tires. The main cause of this situation is to reduce the strength of the material, and the strength of the material is greatly reduced by adding a large amount of low cost additive to the recycled rubber. To avoid this problem, it is necessary