A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
WHEEL TYPE WORK MACHINE
To shorten the time required for vibration suppression, and reduce the impact on fuel consumption at low cost when traveling with a load loaded onto a work device, in a wheel type work machine equipped with a traveling vibration suppression device.SOLUTION: The present invention comprises a ride control valve 26 for controlling the flow rate of pressure oil supplied from a fan pump 24 to a boom cylinder 7 and the flow rate of pressure oil returned from the boom cylinder 7 to a hydraulic oil tank 22, valve devices 27 and 28 for switching whether the pressure oil discharged from the fan pump 24 is guided to a fan motor 25 or the ride control valve 26, and a controller 33, and switching control between the valve devices 27 and 28 and the ride control valve 26 is performed based on the pressure deviation between the pressure detection value of a bottom chamber of the boom cylinder 7 and a pressure target value and the angle deviation between the angle detection value of a boom 2 and an angle target value.SELECTED DRAWING: Figure 2
【課題】走行振動抑制装置を備えたホイール式作業機械において、作業装置に積荷を積載して走行するときに、振動抑制に要する時間を短くし、かつ安価で燃費への影響を少なする。【解決手段】ファンポンプ２４からブームシリンダ７に供給される圧油の流量とブームシリンダ７から作動油タンク２２に戻される圧油の流量を制御するライドコントロール弁２６と、ファンポンプ２４から吐出された圧油をファンモータ２５に導くか、ライドコントロール弁２６に導くかを切り替える弁装置２７，２８と、コントローラ３３を設け、ブームシリンダ７のボトム室の圧力検出値と圧力目標値との圧力偏差及びブーム２の角度検出値と角度目標値との角度偏差に基づいて、弁装置２７，２８とライドコントロール弁２６の切り換え制御を行う。【選択図】図２
WHEEL TYPE WORK MACHINE
To shorten the time required for vibration suppression, and reduce the impact on fuel consumption at low cost when traveling with a load loaded onto a work device, in a wheel type work machine equipped with a traveling vibration suppression device.SOLUTION: The present invention comprises a ride control valve 26 for controlling the flow rate of pressure oil supplied from a fan pump 24 to a boom cylinder 7 and the flow rate of pressure oil returned from the boom cylinder 7 to a hydraulic oil tank 22, valve devices 27 and 28 for switching whether the pressure oil discharged from the fan pump 24 is guided to a fan motor 25 or the ride control valve 26, and a controller 33, and switching control between the valve devices 27 and 28 and the ride control valve 26 is performed based on the pressure deviation between the pressure detection value of a bottom chamber of the boom cylinder 7 and a pressure target value and the angle deviation between the angle detection value of a boom 2 and an angle target value.SELECTED DRAWING: Figure 2
【課題】走行振動抑制装置を備えたホイール式作業機械において、作業装置に積荷を積載して走行するときに、振動抑制に要する時間を短くし、かつ安価で燃費への影響を少なする。【解決手段】ファンポンプ２４からブームシリンダ７に供給される圧油の流量とブームシリンダ７から作動油タンク２２に戻される圧油の流量を制御するライドコントロール弁２６と、ファンポンプ２４から吐出された圧油をファンモータ２５に導くか、ライドコントロール弁２６に導くかを切り替える弁装置２７，２８と、コントローラ３３を設け、ブームシリンダ７のボトム室の圧力検出値と圧力目標値との圧力偏差及びブーム２の角度検出値と角度目標値との角度偏差に基づいて、弁装置２７，２８とライドコントロール弁２６の切り換え制御を行う。【選択図】図２
WHEEL TYPE WORK MACHINE
ホイール式作業機械
TSUKADA YOKO (author) / ICHINOSE MASANORI (author) / ARAI MASATSUGU (author) / HIGURE MASATERU (author)
2019-12-12
Patent
Electronic Resource
Japanese
IPC:
E02F
Baggern
,
DREDGING