小型液压捣固机(图1)是一种广泛用于铁路施工及营业线上大、中、维修作业的工程机械。它属于振动机械范畴,其振动源是一个带两个偏心块的惯性激振器。它对石碴的捣固采用振动和夹实两种方式的结合,即高频振动的镐板在垂直油缸的作用下插入石碴,使石碴产生振动,同时镐板又在水平油缸的作用下“夹紧”石碴,在振动和“夹紧”力的共同作用下,捣实道床。下面 Small hydraulic tamping machine (Figure 1) is a widely used in railway construction and operation of large, medium and maintenance operations of construction machinery. It belongs to the category of vibrating machinery whose source of vibration is an inertial exciter with two eccentric blocks. Its tamping ballast using vibration and clamping combination of two ways that the high-frequency vibration of the pick plate in the vertical cylinder under the action of inserting ballast, ballast vibration, while the pick plate and horizontal cylinder role Under the “clamp” ballast, under the action of vibration and “clamping” force, tamping the bed. the following