在垛式自移支架中,推移千斤顶担负着推溜与移架的任务。它的使用好坏,关系着自移支架能否顺利前移,能否顺利实现推溜,是十分重要的,应于剖析。 (一)推力和拉力的使用 目前在垛式支架中,普遍采用的结构是用推力推溜,用拉力移架(如图一)。这种方式对于合理使用推移千斤顶的推力和拉力是不恰当的。从图中可知,当工作面每向前推进一步时,支架和工作面运输机都要向前移动一个步距,使支架和运输机保持一定的距 In the stack-type self-moving stent, pushing the jack shoulders the task of pushing and moving. It’s use of good or bad, the relationship between the self-moving stent can move forward smoothly, can it be implemented smoothly, it is very important, should be analyzed. (A) the use of thrust and tension At present in the stacker bracket, the commonly used structure is to push the slide with the thrust, the tension with the shift frame (Figure 1). This method is not appropriate for judicious use of jacks and jacks. As can be seen from the figure, when the working surface moves forward one step forward, the bracket and face conveyor must move one step forward to keep the bracket and the conveyor at a certain distance