Bosch Rexroth Ag

Stefan Rinck

Michael Brand

Günter Girschikofsky

Jukka Pekkanen

A hydrostatic drive () with a hydraulic pump () and a plurality of hydraulic motors () that are hydraulically linked with the hydraulic pump (). One speed sensor () each allocated to a respective hydraulic motor () and is linked with a control device () and detects the speed (n; n; n; n) of the allocated hydraulic motor (). Every hydraulic motor () is functionally linked with a brake device () that in turn is linked with the control device (). When the speed (n; n; n; n) of one of the hydraulic motors () exceeds a predetermined threshold value (n), the control device () triggers the brake device () allocated to the associated hydraulic motor ().

Hydrostatic drive and method for operating such a hydrostatic drive

The invention relates to a hydrostatic traveling mechanism ( ) that comprises a closed hydraulic circuit ( ) in which a first hydraulic pump ( ) with a first hydraulic engine ( ) is linked with a flow pipe ( ) and a return pipe ( ). Said hydraulic engine ( ) drives the vehicle wheels ( ) of two first vehicle axles ( ). According to the invention, an additional open hydraulic circuit ( ) is used in which a second hydraulic engine ( ) and a third hydraulic engine ( ) are linked with a second hydraulic pump ( ) via a supply pipe ( ) and a control valve ( ). Said second hydraulic engine ( ) and said third hydraulic engine ( ) drive the vehicle wheels ( ) of a second vehicle axle ( ).

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Weissenhorn, Germany

Stefan Rinck