A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Excavator movable arm hydraulic control system and excavator
The invention relates to the field of excavators, and discloses an excavator movable arm hydraulic control system and an excavator. The excavator movable arm hydraulic control system comprises a hydraulic pump, a multi-way valve, a movable arm oil cylinder and a hydraulic oil tank, wherein the multi-way valve can be used for communicating the rod-free cavity of the movable arm oil cylinder with the oil outlet of the hydraulic pump, and communicating a rod cavity of the movable arm oil cylinder with the hydraulic oil tank, so that the movable arm oil cylinder is in a floating state. In the excavator movable arm hydraulic control system and method, a floating valve is added, the movable arm oil cylinder is in the floating state, a pilot control oil port of a regeneration valve is in communication with the hydraulic oil tank under the control of the floating valve, and the oil outlet of the rod cavity is in communication with the hydraulic oil tank through the regeneration valve in orderto relieve the pressure of the rod cavity, so that the problem of severe collision between a bucket of the excavator and a boat deck or a pipeline is solved.
本发明涉及挖掘机领域，公开了一种挖掘机动臂液压控制系统及挖掘机，该挖掘机动臂液压控制系统包括液压泵、多路阀、动臂油缸和液压油箱，多路阀能够使动臂油缸的无杆腔与液压泵的出油口连通且动臂油缸的有杆腔与液压油箱连通，以使动臂油缸处于浮动状态。本发明增设了浮动阀，动臂油缸处于浮动状态下，通过浮动阀控制再生阀的先导控制油口与液压油箱连通，使有杆腔的出油口通过再生阀与液压油箱连通，以对有杆腔进行泄压，解决了挖掘机的铲斗与船板或管道等发生剧烈碰撞的问题。
Excavator movable arm hydraulic control system and excavator
The invention relates to the field of excavators, and discloses an excavator movable arm hydraulic control system and an excavator. The excavator movable arm hydraulic control system comprises a hydraulic pump, a multi-way valve, a movable arm oil cylinder and a hydraulic oil tank, wherein the multi-way valve can be used for communicating the rod-free cavity of the movable arm oil cylinder with the oil outlet of the hydraulic pump, and communicating a rod cavity of the movable arm oil cylinder with the hydraulic oil tank, so that the movable arm oil cylinder is in a floating state. In the excavator movable arm hydraulic control system and method, a floating valve is added, the movable arm oil cylinder is in the floating state, a pilot control oil port of a regeneration valve is in communication with the hydraulic oil tank under the control of the floating valve, and the oil outlet of the rod cavity is in communication with the hydraulic oil tank through the regeneration valve in orderto relieve the pressure of the rod cavity, so that the problem of severe collision between a bucket of the excavator and a boat deck or a pipeline is solved.
本发明涉及挖掘机领域，公开了一种挖掘机动臂液压控制系统及挖掘机，该挖掘机动臂液压控制系统包括液压泵、多路阀、动臂油缸和液压油箱，多路阀能够使动臂油缸的无杆腔与液压泵的出油口连通且动臂油缸的有杆腔与液压油箱连通，以使动臂油缸处于浮动状态。本发明增设了浮动阀，动臂油缸处于浮动状态下，通过浮动阀控制再生阀的先导控制油口与液压油箱连通，使有杆腔的出油口通过再生阀与液压油箱连通，以对有杆腔进行泄压，解决了挖掘机的铲斗与船板或管道等发生剧烈碰撞的问题。
Excavator movable arm hydraulic control system and excavator
一种挖掘机动臂液压控制系统及挖掘机
ZHAO ZILIANG (author) / SHENG JICHENG (author) / WANG LEI (author)
2020-10-16
Patent
Electronic Resource
Chinese
IPC:
E02F
Baggern
,
DREDGING
| European Patent Office | 2022