Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
MECHANICAL TYPE HYDRAULIC PRESSURE SHOVEL HAVING LEVELING FUNCTION
To provide a mechanical type hydraulic pressure shovel capable of avoiding delay at the instance when movements between lowering of a leveling device and lift of a boom are reversed.SOLUTION: A mechanical type hydraulic pressure shovel includes a jack V1, a pump 31, a hydraulic pressure device 3, a control mechanism 4, a control unit 6, a graph 61 (pressure and temperature) of a vapor pressure of a working liquid, a comparator 62, and a control mechanism 5. The control unit 6 controls the operation of a shovel in a normal operation mode of adjusting flow rates Q of a valve and the pump 31 according to a signal (SC) of the control mechanism 4 and a leveling mode required by the control mechanism 4 so that an arm part freely descends due to an action of its weight, the valve fully opens an outlet C1 of the jack V1 toward a storage part 33, and the pump 31 supplies a fuel to an inlet C2 of the jack V1, and keeps the pressure to be higher than a vapor pressure of the working liquid and lower than an atmospheric pressure at a temperature of the working liquid in the jack V1.SELECTED DRAWING: Figure 1
【課題】地固め機具の降下とブームの上昇との間で動きを逆にする瞬間の遅延を回避する機械式液圧ショベルを提供する。【解決手段】ジャッキＶ１、ポンプ３１、液圧装置３、制御機構４、制御ユニット６、作動液の蒸気圧のグラフ６１（圧力および温度）、比較器６２、及び制御機構５を備え、制御ユニット６は、弁およびポンプ３１の流量Ｑが制御機構４の信号（ＳＣ）に応じて調節される通常動作モードと、腕部がその重みの作用で自由降下するように制御機構４によって要求される地固めモードでショベルの動作を制御し、弁は、ジャッキＶ１の出口Ｃ１を貯蔵部３３に向かって完全に開放し、ポンプ３１は、ジャッキＶ１の入口Ｃ２に燃料供給して、圧力を作動液の蒸気圧よりも高いがジャッキＶ１内の作動液の温度での大気圧よりも低く維持する。【選択図】図１
MECHANICAL TYPE HYDRAULIC PRESSURE SHOVEL HAVING LEVELING FUNCTION
To provide a mechanical type hydraulic pressure shovel capable of avoiding delay at the instance when movements between lowering of a leveling device and lift of a boom are reversed.SOLUTION: A mechanical type hydraulic pressure shovel includes a jack V1, a pump 31, a hydraulic pressure device 3, a control mechanism 4, a control unit 6, a graph 61 (pressure and temperature) of a vapor pressure of a working liquid, a comparator 62, and a control mechanism 5. The control unit 6 controls the operation of a shovel in a normal operation mode of adjusting flow rates Q of a valve and the pump 31 according to a signal (SC) of the control mechanism 4 and a leveling mode required by the control mechanism 4 so that an arm part freely descends due to an action of its weight, the valve fully opens an outlet C1 of the jack V1 toward a storage part 33, and the pump 31 supplies a fuel to an inlet C2 of the jack V1, and keeps the pressure to be higher than a vapor pressure of the working liquid and lower than an atmospheric pressure at a temperature of the working liquid in the jack V1.SELECTED DRAWING: Figure 1
【課題】地固め機具の降下とブームの上昇との間で動きを逆にする瞬間の遅延を回避する機械式液圧ショベルを提供する。【解決手段】ジャッキＶ１、ポンプ３１、液圧装置３、制御機構４、制御ユニット６、作動液の蒸気圧のグラフ６１（圧力および温度）、比較器６２、及び制御機構５を備え、制御ユニット６は、弁およびポンプ３１の流量Ｑが制御機構４の信号（ＳＣ）に応じて調節される通常動作モードと、腕部がその重みの作用で自由降下するように制御機構４によって要求される地固めモードでショベルの動作を制御し、弁は、ジャッキＶ１の出口Ｃ１を貯蔵部３３に向かって完全に開放し、ポンプ３１は、ジャッキＶ１の入口Ｃ２に燃料供給して、圧力を作動液の蒸気圧よりも高いがジャッキＶ１内の作動液の温度での大気圧よりも低く維持する。【選択図】図１
MECHANICAL TYPE HYDRAULIC PRESSURE SHOVEL HAVING LEVELING FUNCTION
地固めの機能を有する機械式液圧ショベル
GILLES FLOREAN (Autor:in)
17.06.2021
Patent
Elektronische Ressource
Japanisch
HYDRAULIC SYSTEM AND CONTROL METHOD FOR LEVELING CYLINDER OF FACE SHOVEL HYDRAULIC EXCAVATOR
| Europäisches Patentamt | 2024
Hydraulic system for leveling oil cylinder of face shovel hydraulic excavator and control method
| Europäisches Patentamt | 2022