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A platform for research: civil engineering, architecture and urbanism
Excavator hydraulic system and excavator
The invention discloses an excavator hydraulic system and an excavator. The excavator hydraulic system comprises an actuating element, a hydraulic pump and a pile-up valve. The actuating element comprises a rotary hydraulic motor, a walking hydraulic motor, a bucket operating cylinder, a bucket rod operating cylinder and a swing arm operating cylinder, the hydraulic pump is a four-unit pump, and the four-unit pump comprises a first pump body, a second pump body, a third pump body and a fourth pump body, wherein the first pump body, the second pump body, the third pump body and the fourth pumpbody are connected in series, an oil outlet of the first pump body communicates with an oil inlet of the rotary hydraulic motor, an oil outlet of the second pump body communicates with an oil inlet of the bucket rod operating cylinder, and oil outlets of the third pump body and the fourth pump body separately communicate with an oil inlet of the pile-up valve, and operating oil passages of the walking hydraulic motor, the bucket operating cylinder and the swing arm operating cylinder separately communicate with an oil outlet of the pile-up valve. According to the excavator hydraulic system, the rotating and action of a swing arm, a bucket rod and a bucket can be completely independent, and the coordination of the compound operation of the excavator is met.
本发明公开了一种挖掘机液压系统及挖掘机，该挖掘机液压系统包括执行元件、液压泵和集成阀，所述执行元件包括回转液压马达、行走液压马达、铲斗工作油缸、斗杆工作油缸和动臂工作油缸，所述液压泵为四联泵，所述四联泵包括依次串联的第一泵体、第二泵体、第三泵体和第四泵体，第一泵体的出油口与所述回转液压马达的进油口连通，第二泵体的出油口与斗杆工作油缸的进油口连通，第三泵体和第四泵体的出油口分别与集成阀上的进油口连通，行走液压马达、铲斗工作油缸和动臂工作油缸的工作油路分别与集成阀上的出油口连通；该挖掘机液压系统使得回转与动臂、斗杆与铲斗的动作可以完全独立，满足了挖掘机复合操作的协调性。
Excavator hydraulic system and excavator
The invention discloses an excavator hydraulic system and an excavator. The excavator hydraulic system comprises an actuating element, a hydraulic pump and a pile-up valve. The actuating element comprises a rotary hydraulic motor, a walking hydraulic motor, a bucket operating cylinder, a bucket rod operating cylinder and a swing arm operating cylinder, the hydraulic pump is a four-unit pump, and the four-unit pump comprises a first pump body, a second pump body, a third pump body and a fourth pump body, wherein the first pump body, the second pump body, the third pump body and the fourth pumpbody are connected in series, an oil outlet of the first pump body communicates with an oil inlet of the rotary hydraulic motor, an oil outlet of the second pump body communicates with an oil inlet of the bucket rod operating cylinder, and oil outlets of the third pump body and the fourth pump body separately communicate with an oil inlet of the pile-up valve, and operating oil passages of the walking hydraulic motor, the bucket operating cylinder and the swing arm operating cylinder separately communicate with an oil outlet of the pile-up valve. According to the excavator hydraulic system, the rotating and action of a swing arm, a bucket rod and a bucket can be completely independent, and the coordination of the compound operation of the excavator is met.
本发明公开了一种挖掘机液压系统及挖掘机，该挖掘机液压系统包括执行元件、液压泵和集成阀，所述执行元件包括回转液压马达、行走液压马达、铲斗工作油缸、斗杆工作油缸和动臂工作油缸，所述液压泵为四联泵，所述四联泵包括依次串联的第一泵体、第二泵体、第三泵体和第四泵体，第一泵体的出油口与所述回转液压马达的进油口连通，第二泵体的出油口与斗杆工作油缸的进油口连通，第三泵体和第四泵体的出油口分别与集成阀上的进油口连通，行走液压马达、铲斗工作油缸和动臂工作油缸的工作油路分别与集成阀上的出油口连通；该挖掘机液压系统使得回转与动臂、斗杆与铲斗的动作可以完全独立，满足了挖掘机复合操作的协调性。
Excavator hydraulic system and excavator
挖掘机液压系统及挖掘机
XIN JIANBO (author) / WANG SHOUFU (author) / YIN MANYI (author)
2020-08-07
Patent
Electronic Resource
Chinese
IPC:
E02F
Baggern
,
DREDGING
Excavator main valve, excavator hydraulic system and excavator
| European Patent Office | 2023
| European Patent Office | 2022