一种结构新颖的机械千斤顶——双销式杠杆千斤顶最近由北京农业工程大学研制成功。它既无齿条又无螺母丝杠,主要零件只有10个,如图1所示。一般千斤顶多以壳体为底座,工作时壳体是不动的,而双销式杠杆千斤顶壳体工作时可沿着立柱上升并抬起重物,所以它的提升高度比一般千斤顶高得多,可以将重物从90毫米提升至1米甚至更高。 A novel mechanical jack - double pin lever jack recently developed by Beijing Agricultural Engineering University. It has neither rack nor nut screw, the main parts only 10, as shown in Figure 1. General jacks to the shell as a base, the work of the shell is not moving, while the double-pin lever jack jack shell work up along the raises and lifts heavy objects, so its lifting height is much higher than the average jack , You can lift weights from 90 mm to 1 meter or more.