WORK VEHICLE

PROBLEM TO BE SOLVED: To provide a work vehicle having traveling stability by preventing an excessive load from being applied to a static pressure type continuously variable transmission when the load applied to the continuously variable transmission becomes large and an engine rotation speed is red...

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Bibliographic Details
Main Authors KUROKAWA MASAHIRO, KAWASAKI JUN, IKEUCHI NOBUAKI, UEJI HITOSHI
Format Patent
LanguageEnglish
Published 04.02.2013
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:PROBLEM TO BE SOLVED: To provide a work vehicle having traveling stability by preventing an excessive load from being applied to a static pressure type continuously variable transmission when the load applied to the continuously variable transmission becomes large and an engine rotation speed is reduced.SOLUTION: The work vehicle includes a control device 31 for controlling the operation of a trunnion shaft drive motor 32 to reduce an aperture of a trunnion shaft 26 in the case that an engine rotation speed detected by an engine rotation speed detection sensor 44 is reduced by a work load to a predetermined engine rotation speed allowed in accordance with a magnitude of the work load. In accordance with the magnitude of a load during work in a field or the like, a degree of reducing the engine rotation speed can be varied, thereby stably and periodically performing the work.
Bibliography:Application Number: JP20110156231