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 make it possible to suppress a shock in the case that an operation state of hydraulic equipment is changed.SOLUTION: A hydraulic system of a work machine comprises: a hydraulic pump for discharging hydraulic oil; first hydraulic equipment which is operated in the case that a pressure of the hydraulic oil is equal to or more than a prescribed value; a first oil passage which is connected to the first hydraulic equipment and can supply the hydraulic oil to the first hydraulic equipment; a second oil passage which is connected to the first oil passage and can discharge the hydraulic oil in the first oil passage; and a pilot check valve which has a pressure reception part which receives a pressure of the hydraulic oil, blocks discharge of the hydraulic oil in the second oil passage when the pressure reception part receives the pressure of the hydraulic oil, and permits discharge of the hydraulic oil in the second oil passage when the pressure reception part receives no pressure of the hydraulic oil.SELECTED DRAWING: Figure 1
【課題】油圧機器の作動状態を変化させる場合のショックを抑制することができる。【解決手段】作動油を吐出する油圧ポンプと、作動油の圧力が所定以上になった場合に作動する第１油圧機器と、第１油圧機器に接続されて当該第１油圧機器に作動油を供給可能な第１油路と、第１油路に接続されて当該第１油路の作動油を排出可能な第２油路と、作動油を受圧する受圧部を有し、受圧部に作動油が受圧した時に第２油路の作動油の排出を阻止し且つ、受圧部に作動油が受圧していない時に第２油路の作動油の排出を許容するパイロットチェック弁と、を備えている。【選択図】図１
HYDRAULIC SYSTEM OF WORK MACHINE AND WORK MACHINE
PROBLEM TO BE SOLVED: To make it possible to suppress a shock in the case that an operation state of hydraulic equipment is changed.SOLUTION: A hydraulic system of a work machine comprises: a hydraulic pump for discharging hydraulic oil; first hydraulic equipment which is operated in the case that a pressure of the hydraulic oil is equal to or more than a prescribed value; a first oil passage which is connected to the first hydraulic equipment and can supply the hydraulic oil to the first hydraulic equipment; a second oil passage which is connected to the first oil passage and can discharge the hydraulic oil in the first oil passage; and a pilot check valve which has a pressure reception part which receives a pressure of the hydraulic oil, blocks discharge of the hydraulic oil in the second oil passage when the pressure reception part receives the pressure of the hydraulic oil, and permits discharge of the hydraulic oil in the second oil passage when the pressure reception part receives no pressure of the hydraulic oil.SELECTED DRAWING: Figure 1
【課題】油圧機器の作動状態を変化させる場合のショックを抑制することができる。【解決手段】作動油を吐出する油圧ポンプと、作動油の圧力が所定以上になった場合に作動する第１油圧機器と、第１油圧機器に接続されて当該第１油圧機器に作動油を供給可能な第１油路と、第１油路に接続されて当該第１油路の作動油を排出可能な第２油路と、作動油を受圧する受圧部を有し、受圧部に作動油が受圧した時に第２油路の作動油の排出を阻止し且つ、受圧部に作動油が受圧していない時に第２油路の作動油の排出を許容するパイロットチェック弁と、を備えている。【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) / ARII KAZUYOSHI (author) / SUMIYOSHI RYOHEI (author)
2017-06-15
Patent
Electronic Resource
Japanese
IPC:
B60K
Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen
,
ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES
/
E02F
Baggern
,
DREDGING
/
F15B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL
,
Druckmittelbetriebene Systeme allgemein
/
F16H
Getriebe
,
GEARING