PLUNGER MACHINE Russian patent published in 1995 - IPC

FIELD: mechanical engineering. SUBSTANCE: plunger machine has housing 1 and two cylinders mounted inside it. The cylinders are provided with pistons 3 which move toward each other and define common chamber 4 of varying volume. Pistons 3 are coupled with rocking washers 6 through connecting rods 5. The washers are symmetrically arranged on sloping pins 7 of crankshaft 8 and abut against radially thrust bearings 9. The axis of crankshaft 8 is parallel to axes 11 of cylinder barrels 2. End crank journal supports 12 of crankshaft 8 is mounted with a spaced relation to housing 1. The cylinder barrels 2 and crankshaft 8 are provided with locators which prevent axial displacement and are arranged at in the middle part of crankshaft 8 and cylinder barrels 3. The locator of shaft 8 is constructed as ring projection 14 and received in the ring hollow of housing 1. EFFECT: improved design. 1 dwg