A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
HYDRAULIC SYSTEM OF WORK MACHINE, AND WORK MACHINE
PROBLEM TO BE SOLVED: To reduce the number of components to operate hydraulic control portions by controlling a plurality of hydraulic control portions by a prescribed proportional valve.SOLUTION: A hydraulic system includes hydraulic pumps 66a, 66b discharging a hydraulic fluid, a hydraulic apparatus 57 operated by the hydraulic fluid, a plurality of hydraulic control portions 63, 59 controlling the hydraulic apparatus by changing an operation state according to a pressure of the hydraulic fluid, and a proportional valve 45 connected to the plurality of hydraulic control portions and capable of setting a pressure of the hydraulic fluid supplied to the hydraulic control portions. The hydraulic apparatus includes a traveling motor 57, the plurality of hydraulic control portions include first hydraulic switch valves 63 of which an operating state is changed by a pressure of the hydraulic fluid to change a speed of the traveling motor, and brake mechanisms 59 of which an operating state is changed by the pressure of the hydraulic fluid to brake the travelling motor and to release the braking.SELECTED DRAWING: Figure 1
【課題】複数の油圧制御部を所定の比例弁で制御できるようにすることで、油圧制御部を作動させる部品の点数を低減することができるようにする。【解決手段】油圧システムは、作動油を吐出する油圧ポンプ６６ａ，６６ｂと、作動油によって作動する油圧機器５７と、作動油の圧力に応じて作動状態が変化することで油圧機器を制御する複数の油圧制御部６３，５９と、複数の油圧制御部に接続され且つ当該油圧制御部に供給する作動油の圧力を設定可能な比例弁４５とを備えている。油圧機器は、走行モータ５７を含み、複数の油圧制御部は、作動油の圧力によって作動状態が変化して走行モータの速度を変更可能な第１油圧切換弁６３と、作動油の圧力によって作動状態が変化して走行モータの制動と当該制動の解除とを行うブレーキ機構５９と、を含んでいる。【選択図】図１
HYDRAULIC SYSTEM OF WORK MACHINE, AND WORK MACHINE
PROBLEM TO BE SOLVED: To reduce the number of components to operate hydraulic control portions by controlling a plurality of hydraulic control portions by a prescribed proportional valve.SOLUTION: A hydraulic system includes hydraulic pumps 66a, 66b discharging a hydraulic fluid, a hydraulic apparatus 57 operated by the hydraulic fluid, a plurality of hydraulic control portions 63, 59 controlling the hydraulic apparatus by changing an operation state according to a pressure of the hydraulic fluid, and a proportional valve 45 connected to the plurality of hydraulic control portions and capable of setting a pressure of the hydraulic fluid supplied to the hydraulic control portions. The hydraulic apparatus includes a traveling motor 57, the plurality of hydraulic control portions include first hydraulic switch valves 63 of which an operating state is changed by a pressure of the hydraulic fluid to change a speed of the traveling motor, and brake mechanisms 59 of which an operating state is changed by the pressure of the hydraulic fluid to brake the travelling motor and to release the braking.SELECTED DRAWING: Figure 1
【課題】複数の油圧制御部を所定の比例弁で制御できるようにすることで、油圧制御部を作動させる部品の点数を低減することができるようにする。【解決手段】油圧システムは、作動油を吐出する油圧ポンプ６６ａ，６６ｂと、作動油によって作動する油圧機器５７と、作動油の圧力に応じて作動状態が変化することで油圧機器を制御する複数の油圧制御部６３，５９と、複数の油圧制御部に接続され且つ当該油圧制御部に供給する作動油の圧力を設定可能な比例弁４５とを備えている。油圧機器は、走行モータ５７を含み、複数の油圧制御部は、作動油の圧力によって作動状態が変化して走行モータの速度を変更可能な第１油圧切換弁６３と、作動油の圧力によって作動状態が変化して走行モータの制動と当該制動の解除とを行うブレーキ機構５９と、を含んでいる。【選択図】図１
HYDRAULIC SYSTEM OF WORK MACHINE, AND WORK MACHINE
作業機の油圧システム及び作業機
FUKUDA YUJI (author) / NAKAGAWA HIROAKI (author) / ARII KAZUYOSHI (author) / MIURA TAKANORI (author) / KINUGAWA RYOSUKE (author)
2016-08-18
Patent
Electronic Resource
Japanese