INDUSTRIAL VEHICLE

To suppress generation of a response lag of steering.SOLUTION: The industrial vehicle includes: a power steering valve 40 for switching supply of hydraulic oil to a power steering cylinder 39 steering a direction of a steering wheel; a priority valve 41 for controlling a flow rate of hydraulic oil f...

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Bibliographic Details
Main Author MATSUO TSUTOMU
Format Patent
LanguageEnglish
Japanese
Published 23.01.2020
Subjects
LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
MOTOR VEHICLES
PERFORMING OPERATIONS
TRAILERS
TRANSPORTING
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Summary:To suppress generation of a response lag of steering.SOLUTION: The industrial vehicle includes: a power steering valve 40 for switching supply of hydraulic oil to a power steering cylinder 39 steering a direction of a steering wheel; a priority valve 41 for controlling a flow rate of hydraulic oil flowing into the power steering valve 40. The priority valve 41 is a valve in which opening adjustment is executed by electromagnetic proportional control. A vehicle control device 30 supplies hydraulic oil from a fixed capacity type hydraulic pump 36 to the power steering valve 40 by adjusting an opening of the priority valve 41 to obtain a setting pressure corresponding to a difference between a target tire angle and an actual tire angle.SELECTED DRAWING: Figure 2 【課題】操舵の応答遅れを抑制すること。【解決手段】操舵輪の向きを操舵するパワーステアリングシリンダ３９への作動油の供給を切り替えるパワーステアリングバルブ４０と、パワーステアリングバルブ４０へ流れる作動油の流量を制御する優先弁４１と、を備える。優先弁４１は、電磁比例制御によって開度調整が行われる弁である。そして、車両制御装置３０は、目標タイヤ角と実際のタイヤ角との差分に応じた設定圧となるように優先弁４１の開度を調整することで、固定容量型の油圧ポンプ３６からの作動油をパワーステアリングバルブ４０へ供給する。【選択図】図２
Bibliography:Application Number: JP20180133324