A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Multi-tandem valve group of middle-sized hydraulic excavator
The invention discloses a multi-tandem valve group of a middle-sized hydraulic excavator. The multi-tandem valve group comprises a main valve and a pilot shuttle valve group. The main valve comprises a first control loop and a second control loop. The first control loop comprises a first pump, a leftward-walking control valve, a rotation control valve, a movable arm second control valve, a bucket rod first control valve, an auxiliary control valve, a first bypass switch-off convergence valve and a first flow control valve. The second control loop comprises a second pump, a straight line walking control valve, a rightward-walking control valve, a movable arm first control valve, a bucket rod second control valve, a bucket control valve, a second bypass switch-off convergence valve and a second flow control valve. The pilot shuttle valve group is mainly used for collecting straight line walking signals. The multi-tandem valve group is good in universality and controllability, and has the obvious energy saving and high efficiency effects.
Multi-tandem valve group of middle-sized hydraulic excavator
The invention discloses a multi-tandem valve group of a middle-sized hydraulic excavator. The multi-tandem valve group comprises a main valve and a pilot shuttle valve group. The main valve comprises a first control loop and a second control loop. The first control loop comprises a first pump, a leftward-walking control valve, a rotation control valve, a movable arm second control valve, a bucket rod first control valve, an auxiliary control valve, a first bypass switch-off convergence valve and a first flow control valve. The second control loop comprises a second pump, a straight line walking control valve, a rightward-walking control valve, a movable arm first control valve, a bucket rod second control valve, a bucket control valve, a second bypass switch-off convergence valve and a second flow control valve. The pilot shuttle valve group is mainly used for collecting straight line walking signals. The multi-tandem valve group is good in universality and controllability, and has the obvious energy saving and high efficiency effects.
Multi-tandem valve group of middle-sized hydraulic excavator
HE QINGHUA (author) / GUO YONG (author) / YOU XINRONG (author) / CHEN GUIFANG (author) / ZHANG XINHAI (author)
2015-07-08
Patent
Electronic Resource
English
IPC:
E02F
Baggern
,
DREDGING