本发明结构简单、合理，方便生产，方便使用，易于更换，可以改变传动螺母的往复行程。
The invention has the advantages of simple and reasonable structure, convenient production, convenient use and easy replacement, and can change the reciprocating stroke of the driving nut.
液压千斤顶又称机械式千斤顶，是由人力通过螺旋副传动，螺杆或螺母套筒作为顶举件。
The hoisting jack calls the mechanical hoisting jack, is by the manpower through the screw vice-transmission, the screw rod or the nut sleeve achievement goes against lifts.
摘要：本系统采用一级齿轮减速，带动丝杠传动，通过螺母的直线移动带动工作台运动。
Abstract: the system USES a gear reducer, drives the lead screw drive, And nut straight through mobile workbench movement.
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