Differential synchronous heavy-load multistage electric cylinder

The differential synchronous heavy-load multi-stage electric cylinder is a heavy-load electric cylinder which is arranged in a small space and can realize stable erection of a large radar array plane, a first-stage screw rod adopts a planetary roller screw rod and provides higher bearing capacity, and a second-stage screw rod adopts a hollow ball screw rod and is lower in cost under the condition that the bearing capacity is met. The two-stage lead screw is designed to be different in lead according to the available size and stroke, and the length of the electric cylinder body is reduced more effectively. 本发明公开了一种差速同步重载多级电动缸，本发明小空间内布局的，可以实现大型雷达阵面平稳起竖的重载电动缸：第一级丝杆采用行星滚柱丝杆，提供更大的承载能力，第二级丝杆采用空心滚珠丝杆，承载力满足的情况下成本更低。两级丝杆根据可利用的尺寸和行程，设计为不同的导程，更有效地减小电动缸本体长度。