Hydraulic circuit and slope face working vehicle using the circuit



PROBLEM TO BE SOLVED: To obtain a hydraulic circuit for concurrently and effectively operating two hydraulic operating machines by one hydraulic pump, and a slope face working vehicle using the circuit. SOLUTION: This hydraulic circuit is composed of a hydraulic pump, first and second oil pressure supply circuits for supplying oil pressure from the pump to the respective hydraulic operating machines via a control valve, and an oil pressure adjusting mechanism for reducing the supply path of another side oil pressure supply circuit when a given or more pressure difference is caused between the oil pressure supply path of one side oil pressure supply circuit of the circuits and an oil pressure discharge path.
(57)【要約】 【課題】 本発明は1個の油圧ポンプで2つの油圧作動 機を、同時に効率よく作動させることができる油圧回路 および該油圧回路を用いた法面作業車を得るにある。 【解決手段】 油圧ポンプと、この油圧ポンプからの油 圧をコントロールバルブを介してそれぞれ油圧作動機に 供給することができる第1・第2の油圧供給回路と、こ の第1・第2の油圧供給回路の一方の油圧供給回路の油 圧供給路と油圧排出路との間に所定以上の圧力差が生じ た場合に、前記他方の油圧供給回路の供給路を小さくす る油圧調整機構とで油圧回路を構成している。




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    JP-2013060792-AApril 04, 2013Toshihito Okamoto, 俊仁 岡本Working vehicle for slope