The hoisting jack calls the mechanical hoisting jack, is by the manpower through the screwvice-transmission, the screw rod or the nut sleeve achievement goes against lifts.
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。
2
The utility model relates to a fast anvil vice which is a simple, convenient and practical new device which can arbitrarily regulate a vice travel without a screw rod rotating.