The paper is about the design and application of a kind of simple bending machine of Ⅰ-steel,in which screw jack and cycloid pinwheel planetary reducer are used.
介绍了一种自行设计制作的简易机械式折弯机,指出设计中主要采用了螺旋千斤顶和摆线针轮减速器,该机可以用来弯曲工字钢等型材,在一些加工精度和效率要求不高的应用场合中表现出了很好的性价比。
3D part library for jack screw based on optimal design;
基于优化设计的螺旋千斤顶三维零件库的建立
A jack operated by a screw.
螺旋起重机，螺旋千斤顶由螺旋杆运作的起重机
The lifting capacity of this chain hoist (hydraulic jack, screw jack) is 5tons.
这个吊链（油压千斤顶、螺旋千斤顶）的起重能力为5吨。
"Is there a jack-screw to be had?"
“你们有千斤顶吗？”
Complete detail drawings of the screw thread insert (Part 2#) by the assembly drawing of the jack.
根据千斤顶装配图拆画件2螺套的零件图。
Jack up a car
用千斤顶把汽车顶起来
Contents: understand the assembly drawing of a jack and complete detail drawings of a screw thread insert by the assembly drawing.
内容：读懂千斤顶装配图，并由装配图拆画件2螺套的零件图。
395 we can adjust the levelness of the machine by means of shim and screw jack.
我们可以利用垫铁和螺丝千斤顶来调整机器的水平度。
They put the car up with a hoisting jack.
他们用千斤顶把车抬高。
lifting jack (excl. hydraulic)
千斤顶（液压的除外）
hydraulic jack (excl. built in)
液压千斤顶（固定的除外）
hydraulic trolley jack
手推车式液压千斤顶
horizontal action jack (excl. hydraulic)
水平千斤顶（液压的除外）
a pneumatic jack
气力起重机, 气力千斤顶
hand vertical hydraulic jack
手动立式油压千斤顶
oil-powered hydraulic truck jack
燃油液压汽车千斤顶
built-in jack for lifting vehicles
起升车辆固定千斤顶
hand operated vertical hydraulic jack
手动立式液压千斤顶
lift a car with a jack
用千斤顶把汽车托起