The main parameters to measure the performance of the damping buffer.
Release time:
2021-11-24 10:25
Source:
damping buffer generally refers to the ability of the damping buffer to buffer deformation allowed by the damping buffer under the impact force of the truck before and after the truck from the distance between the plate seats. Generally, it refers to the deformation before the plate and the buffer box When contact occurs, a deformation before a rigid impact occurs is called the working stroke. The free stroke refers to the deformation allowed by the structure of the damping buffer in a free state, which is generally larger than the working stroke of the buffer to compensate for the performance of the buffer, because of the influence of wear and energy consumption. Prevent the damping buffer from generating a certain gap between the plate seats before and after the plate, and reduce the effect of the damping buffer. The formation of the damping buffer is affected by the clearance of the hook shoulder. There is an important principle when the
buffer is loaded, that is, the gap between the hook and shoulder of the vehicle should be larger than that of the buffer, so that the longitudinal impact force of the truck can be transmitted to the traction beam through the buffer when the truck is working. When the coupler is impacted, the hook shoulder and the impact seat contact, and this part of the impact force can be directly transmitted to the bottom of the car, avoid damage to the damping buffer after overload.
damping buffer during full compression, the sum of the work done by the resistance force on its stroke is called capacity. Capacity is a very important technical indicator to measure the performance of a buffer. The selection of capacity is closely related to the impact speed of train marshalling, the total weight of freight cars and the traction weight of trains, and is also restricted by its own structure and working principle. Static prepressure of damping buffer. The initial pressure will affect the starting acceleration of the train.
Energy absorption rate: During the full compression process of the damping buffer, a part of the energy is consumed by the damping, and the ratio of the energy consumed to the buffer capacity is called the energy absorption rate. The greater the absorption rate, the greater the buffer's ability to absorb impact energy and the smaller the recoil effect. Otherwise, the damping buffer will have to work back and forth several times to consume the impact energy, which will lead to premature fatigue damage of the coupler and underframe, and may aggravate the longitudinal impulse of the train. At this time, the energy absorption rate is generally required to be not less than 80%.
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