FIELD: machine building.
SUBSTANCE: invention relates to mechanical control devices of gear transmissions and can be used in chemical and oil-and-gas machine building at manufacture of two-speed drives of pipeline shut-off valves. Two-speed manual shutoff valve drive comprises a housing; flywheel, rigidly connected with drive shaft; cylindrical roller installed on drive shaft; fixed wheel with external teeth; movable wheel with inner teeth fitted freely on cylindrical roller and connected by means of flexible rods to driven link. At that, driven link is equipped with pins rigidly installed in it, and movable wheel with internal teeth is made with holes, which diameter exceeds diameter of pins located in them on two interaxle distances of fixed wheel with external teeth and movable wheel with internal teeth.
EFFECT: higher loading capacity of mechanism.
3 cl, 4 dwg
| Title | Year | Author | Number |
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|
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| TWO-SPEED DRIVE MECHANISM | 2010 |
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| MANUAL DOUBLE-SPEED DRIVE FOR PIPELINE VALVES | 2008 |
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| INVALID CHAIR WITH ELECTROMECHANICAL DRIVE | 1991 |
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RU2085166C1 |
| PLANETARY TRANSMISSION | 2010 |
|
RU2445529C1 |
