Large-stroke double-stage double-cylinder device

The invention provides a large-stroke double-stage double-cylinder device. The large-stroke double-stage double-cylinder device comprises a throttling bolt assembly, wherein the throttling bolt assembly is connected with a plurality of cylinder assemblies with the same model and specification through a balance valve assembly pipeline; and a balance valve assembly synchronously controls the outputof a plurality of gas paths. According to the large-stroke double-stage double-cylinder device, a large push-out stroke can be realized on the premise that the size of the large-stroke double-stage double-cylinder device is relatively small; the control over the impact force of push-out in place and the control over synchronous push-out in place are realized through a throttling bolt, a balance valve and negative pressure in a cylinder, the push-out in place can be realized in 1.5S, and the impact force is guaranteed to be less than 50g/3ms; and the number of parts is small, the structure is simple, other external ele