| 摘要 |
The invention is related to mechanical engineering particularly to the mechanisms intended for remote control of the gas and petroleum products pipelines stop and control devices actuators. The inventive pneumatic drive comprising the sequentially connected electropneumatic control device (1) consisting of limit switches (2, 3), electropneumatic valves (3, 4), gasflow control units (6, 7), reversing jet engine (9) with its shaft (13) connected to the drive output shaft (15) through the mechanical reducing gear (11) and crank screw rotation gear (14) comprising the housing (21), crank (22), guide (25), sliding nut (24) and lead screw (23) connected to stick (45) of drive kinetic energy absorbing unit wherein lead screw (23) and stick (45) of the drive movable parts kinetic energy absorbing unit are interconnected through the rod gear (51) whereas the drive movable parts kinetic energy absorbing unit is accommodated inside the rotation gear (21) housing (14) in parallel with the lead screw (23).
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