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 (116, 117) and a rear pair of hydraulic traction motors (118, 119). Each motor (116, 117, 118. 119) is operable in a forward direction or a reverse direction, and each front motor (116,...

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Bibliographic Details
Main Author LINK, TODD A
Format Patent
LanguageEnglish
French
German
Published 14.01.2009
Subjects
BLASTING
ENGINEERING ELEMENTS AND UNITS
GEARING
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:A reverse over-ride system is provided for a mower traction drive having a front pair of hydraulic traction motors (116, 117) and a rear pair of hydraulic traction motors (118, 119). Each motor (116, 117, 118. 119) is operable in a forward direction or a reverse direction, and each front motor (116, 117) is in series with a rear motor (118, 119). The system includes a solenoid operated valve (120, 121) connected to each rear motor (116, 117, 118, 119). Each solenoid operated valve (120, 121) has a first position in which a check valve opens to allow recirculation through the rear wheel motors (118, 119) while the mower operates in a forward turn, and closes to disallow recirculation so the rear wheel motors (118, 119) may build pressure and drive during hill climbing. Each solenoid operated valve (120, 121) has a second position allowing free rotation of the rear motor (118, 119) while the machine operates in a reverse direction. A mechanical or electronic linkage is provided between the reverse pedal (127) and solenoid operated valves (120, 121).
Bibliography:Application Number: EP20080159422