Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Switchable hydraulic circuit and excavator
The invention provides a switchable hydraulic circuit and an excavator, and relates to the technical field of excavators. The switchable hydraulic circuit comprises at least one hydraulic cylinder, afirst switching valve set, a second switching valve set and an energy accumulator. The hydraulic cylinder comprises a cylinder body, a mandrel and a piston rod. One end of the mandrel is mounted at the bottom end of an inner cavity of the cylinder body, a cavity is formed in the piston rod, the mandrel is slidingly connected into the cavity, a first cavity is formed by the mandrel and the piston rod, the portion, in the cylinder body, of the piston rod and the cylinder body cooperate to form a second cavity, and the piston rod, the mandrel and the cylinder body cooperate to form a third cavity. The first cavity and the third cavity are connected through the first switching valve set. The third cavity is connected with the energy accumulator through the second switching valve set. The firstcavity and the second cavity are connected with a hydraulic oil tank and a hydraulic power source through a reversing valve. The first cavity and the third cavity are disconnected or communicate witheach other through the first switching valve set, the third cavity and the energy accumulator communicate with each other or are disconnected through the second switching valve set, an energy savingmanner and a traditional manner are switched, and the switchable hydraulic circuit can adapt to multiple working conditions of the excavator.
本发明提供了一种可切换式液压回路及挖掘机，涉及挖掘机技术领域，包括至少一个液压缸、第一切换阀组、第二切换阀组和蓄能器；液压缸包括缸体、芯轴、活塞杆；芯轴的一端安装在缸体的内腔的底端，活塞杆内部开有空腔，芯轴滑动连接在空腔内，芯轴与活塞杆形成腔体一，活塞杆位于缸体内部的部分与缸体配合形成腔体二，活塞杆、芯轴与缸体配合形成腔体三；腔体一和腔体三通过第一切换阀组连接；腔体三通过第二切换阀组与蓄能器连接；腔体一和腔体二通过换向阀与液压油箱和液压动力源连接。通过第一切换阀组使腔体一和腔体三断开或者连通，通过第二切换阀组使腔体三与蓄能器连通与断开，实现节能模式和传统模式的切换，可适应挖掘机的多种工况。
Switchable hydraulic circuit and excavator
The invention provides a switchable hydraulic circuit and an excavator, and relates to the technical field of excavators. The switchable hydraulic circuit comprises at least one hydraulic cylinder, afirst switching valve set, a second switching valve set and an energy accumulator. The hydraulic cylinder comprises a cylinder body, a mandrel and a piston rod. One end of the mandrel is mounted at the bottom end of an inner cavity of the cylinder body, a cavity is formed in the piston rod, the mandrel is slidingly connected into the cavity, a first cavity is formed by the mandrel and the piston rod, the portion, in the cylinder body, of the piston rod and the cylinder body cooperate to form a second cavity, and the piston rod, the mandrel and the cylinder body cooperate to form a third cavity. The first cavity and the third cavity are connected through the first switching valve set. The third cavity is connected with the energy accumulator through the second switching valve set. The firstcavity and the second cavity are connected with a hydraulic oil tank and a hydraulic power source through a reversing valve. The first cavity and the third cavity are disconnected or communicate witheach other through the first switching valve set, the third cavity and the energy accumulator communicate with each other or are disconnected through the second switching valve set, an energy savingmanner and a traditional manner are switched, and the switchable hydraulic circuit can adapt to multiple working conditions of the excavator.
本发明提供了一种可切换式液压回路及挖掘机，涉及挖掘机技术领域，包括至少一个液压缸、第一切换阀组、第二切换阀组和蓄能器；液压缸包括缸体、芯轴、活塞杆；芯轴的一端安装在缸体的内腔的底端，活塞杆内部开有空腔，芯轴滑动连接在空腔内，芯轴与活塞杆形成腔体一，活塞杆位于缸体内部的部分与缸体配合形成腔体二，活塞杆、芯轴与缸体配合形成腔体三；腔体一和腔体三通过第一切换阀组连接；腔体三通过第二切换阀组与蓄能器连接；腔体一和腔体二通过换向阀与液压油箱和液压动力源连接。通过第一切换阀组使腔体一和腔体三断开或者连通，通过第二切换阀组使腔体三与蓄能器连通与断开，实现节能模式和传统模式的切换，可适应挖掘机的多种工况。
Switchable hydraulic circuit and excavator
可切换式液压回路及挖掘机
LIU QIMING (Autor:in) / YIN MANYI (Autor:in) / SHI XIANGXING (Autor:in)
17.07.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
E02F
Baggern
,
DREDGING
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