| 摘要 |
FIELD: transport engineering; vehicle gearbox control devices. ^ SUBSTANCE: proposed piston unit contains cylinder with axle-rod on end of which smaller type-size piston is rigidly secured. Intermediate ring piston is installed on piston of smaller type-size coaxially to inner diameter of cylinder. Grooves are made on outer and inner surfaces of intermediate piston in which sealing members are placed. Grooves are made with displacement relative to axis of intermediate piston and are connected with lower pressure zone. Piston of smaller type-size and intermediate piston are installed for displacement together with sealing members within the limits of thrust bead made on smaller piston and stop ring installed in cylinder. ^ EFFECT: simplified design, increased service life of piston unit. ^ 2 cl, 4 dwg |
