DUMPING MECHANISM OF DUMP TRUCK Russian patent published in 1994 - IPC

FIELD: mechanical engineering. SUBSTANCE: dumping mechanism has telescopic hydraulic cylinder 2 of one-sided action with several extensible plungers hinged on frame 1 of the dump truck. Ring grooves are made in the lower part on the outer surface of the plungers. Two cylindrical guiding linings 16 and 18 are set into each groove. The face surfaces of the linings can interact with locking ring members (spring-controlled rings) 14 and 21 limiting the plunger axial displacement. Faceted protrusions having the shape of blunt wedge are made on the ends of both guiding linings 18 of the last plunger. The distance n between the neighboring protrusions in case the faceted protrusions of the opposite ends of these linings are conjugated between themselves, is less than the distance m between the lining ends of the remaining plungers in case they are symmetrically located relative to the axis of hydraulic cylinder 2. EFFECT: ensures the supporting of the excess pressure with gasket 12 in case of jerks of platform 5. 6 dwg