FIELD: machine building.
SUBSTANCE: invention relates to mechanical gear control devices, in particular, to drives of pipeline shut-off valves. Two-speed manual drive of shutoff valves includes housing (1), cover (2), flywheel (3), planetary mechanism including stationary central wheel with external teeth (4), satellite with internal teeth (5), rigidly connected to hub (6), having longitudinal cylindrical slot, roller (7) located in slot of drive shaft (8), flexible elements (9) connecting hub (6) of satellite to driven shaft , which is installed on sliding bearing (11). Flexible elements (9) are made with variable cross-section in the form of beams of equal resistance, which allows reducing the axial size of the drive compared to the drive containing flexible elements in form of constant cross-section rods.
EFFECT: making conical flexible elements (9) increases level of manufacturability of the drive compared to a drive comprising flexible elements in the form of beams of equal resistance.
1 cl, 5 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
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RU2701982C1 |
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RU2378555C2 |
| DOUBLE-SPEED MANUAL DRIVE OF PIPELINE VALVES | 2006 |
|
RU2343329C2 |
| TWO-SPEED MANUAL DRIVE OF SHUT-OFF VALVES | 2016 |
|
RU2641415C2 |
