TRANSMISSION OF HYDRAULIC POWERED VEHICLE Russian patent published in 2006 - IPC B60K17/10 

FIELD: transport engineering.

SUBSTANCE: proposed transmission of hydraulically powered vehicle has pumping unit driven from heat engine through friction clutch and consisting of main and make-up pumps, hydraulic motors connected with pumping unit by main hydraulic lines and forming hydraulic circuit, and self-contained pump with drive from electric motor. Clutch control mechanism contains spring-loaded lever to move spring-loaded pressure plate of clutch from friction plate, hydraulic cylinder to move lever closing clutch plate by spring engaging with pressure plate, vessel with liquid communicating with hydraulic cylinder, valve for communicating vessel with compressed air source. Valve control, electric circuit is provided with switches operated by compressed air source pressure sensor, engine shaft speed sensor, pressure sensor of make-up pump and sensors of maximum temperature and minimum liquid level in hydraulic tank. Electric control circuit of self-contained pump drive motor has switch controlled manually and switches controlled by pumping unit shaft speed sensor, hydraulic tank working liquid minimum level sensor, shutoff element of two-position valve communicating suction space of self-contained pump in turn hydraulic tank and with device for filling hydraulic tank with working liquid.

EFFECT: improved reliability of transmission of hydraulic powered vehicle by monitoring its condition to prevent emergency situations.

2 cl, 1 dwg