Urban road deceleration belts are transportation facilities installed on highways to slow down passing vehicles. The shape is generally strip-shaped and also a bit shaped. The material is mainly rubber or metal. It is usually yellow and black to attract visual attention. The road is slightly arched to slow down the vehicle. Today I will take you to understand what the quality standards for speed reducers include.
①Physical properties: The elongation at break of the surface material of the deceleration ridge should not be less than 200%, and the elongation at break of the surface material of the deceleration ridge used on highways and urban roads should not be less than 250%.
Pressure resistance: A two-axle vehicle with a total weight of 20t passes a speed reduction ridge fixed on the road at a speed of 40km / h. After the test, the specimen is visually inspected. After the test, the speed reduction ridge should not have any damage or cracking.
Solution resistance: After the deceleration ridge is wiped with gasoline No. 93, there should be no obvious signs of dissolution and destruction.
④ After the deceleration ridge is wiped by No. 0 diesel oil, there should be no obvious signs of dissolution and destruction.
⑤ After the deceleration ridge is wiped with the SAE5W-30 lubricating oil, there should be no obvious signs of dissolution and destruction.
⑥Tensile strength: The tensile strength of the surface material of the deceleration ridge should not be less than 6.0MPa, and the tensile strength of the surface material of the deceleration ridge used on highways and urban roads should not be less than 8.5MPa
⑦ Adaptability: After being subjected to various climatic environmental tests, the deceleration ridge should be free of discoloration, cracks, spalling, warping and other phenomena, and its elongation at break and tensile strength should still meet the requirements.
The above is the quality standard information of the speed reducer introduced to you. I hope to provide you with some help. Thank you for reading. If you have any questions, please feel free to contact us. We look forward to working with you.

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