Among the roller accessories, today we want to talk about the shock absorber of the roller.

After the inspection and repair of the roller shock absorber, the working performance test shall be conducted on a special test bench. When the resistance frequency is 100 ± 1mm, the resistance of its extension stroke and compression stroke shall meet the requirements. For example, the stretching stroke resistance of liberation cal091 is 2156 ~ 2646n, and the compression stroke resistance is 392 ~ 588n; The extension stroke resistance of Dongfeng locomotive is 2450 ~ 3038n, and the compression stroke resistance is 490 ~ 686n.

Rubber has both high elastic state and high viscosity state. The elasticity of rubber is produced by the change of its curly molecular conformation. The interaction between rubber molecules will hinder the movement of the molecular chain, showing the characteristics of viscosity, so that the stress and strain are often in an unbalanced state. This curly long-chain molecular structure of rubber and the weak secondary force between molecules make rubber materials present unique viscoelastic properties, which have good shock absorption, sound insulation and cushioning properties.

Rubber components are widely used to isolate vibration and absorb impact because of their hysteresis, damping and reversible large deformation. In addition, rubber also has hysteresis and internal friction characteristics, which are usually expressed by loss factors. The larger the loss factor, the more obvious the damping and heat generation of rubber, and the more obvious the damping effect. In conclusion, the rubber shock absorber made of rubber also has a good shock absorption effect.

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