REVERSE OVER-RIDE SYSTEM FOR MOWER TRACTION DRIVE

A reverse over-ride system is provided for a mower traction drive having a front pair of hydraulic traction motors and a rear pair of hydraulic traction motors. Each motor is operable in a forward direction or a reverse direction, and each front motor is in series with a rear motor. The system inclu...

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Bibliographische Detailangaben
1. Verfasser:	LINK TODD ALLEN
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES AUXILIARY DRIVES FOR VEHICLES BLASTING ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING INSTRUMENTATION OR DASHBOARDS FOR VEHICLES LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS THERMAL INSULATION IN GENERAL TRANSPORTING VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A reverse over-ride system is provided for a mower traction drive having a front pair of hydraulic traction motors and a rear pair of hydraulic traction motors. Each motor is operable in a forward direction or a reverse direction, and each front motor is in series with a rear motor. The system includes a solenoid operated valve connected to each rear motor. Each solenoid operated valve has a first position in which a check valve opens to allow recirculation through the rear wheel motors while the mower operates in a forward turn, and closes to disallow recirculation so the rear wheel motors may build pressure and drive during hill climbing. Each solenoid operated valve has a second position allowing free rotation of the rear motor while the machine operates in a reverse direction. A mechanical or electronic linkage is provided between the reverse pedal and solenoid operated valves.