关键词: 机械化采制样, 初级采样器, 弱冲击, 冲击力, 有限单元法

Abstract: The coal mechanical sampling system has problems of strong vibration and much leak coal when the sampler works. The primary cause of the impact force has been discussed. For reducing the impact force, the design of new type sampler with low impact has been done. The cooperation of platform’s responses under sampling impacting with new sampler and old sampler has been done via FEM(finite element methods). The result shows that the impact to the platform and the channel steel has been reduced greatly. The sampling impact has been transferred to internal force. The maximum deformation of supporting channel steels has decreased from 2.18mm to 0.85mm, and the maximum stress has decreased from 189.87MPa to 68.51MPa. They has decreased 61.0% and 63.9% separately. The impact force caused by sampling of sampler has been decreased strongly via the using of the new type sampler with low impact.