FIELD: engines and pumps.
SUBSTANCE: proposed assembly comprises reversible motor and rolling screw-nut arranged in oil-filled casing. Screw of said screw-nut is engaged with motor shaft via countershaft. Nut is engaged with pump plunger via hollow chromium-plated rods. Besides, assembly includes guides of said nut and spring dampers. Said assembly differs from known designs in that it is equipped with hydrodynamic damper while pressure end collar is arranged on hollow rod.
EFFECT: higher reliability.
2 dwg
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Authors
Dates
2013-04-20—Published
2011-11-09—Filed