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Hydraulic excavator operating control system is used to complete the excavation work to manipulate various actions, which is the main control system of the excavator.
Hydraulic excavators working process include four movements: bucket rotation, arm forward and backward, boom lifting and turntable rotating. Cylinder push-pull operation and hydraulic motor reverse of operation control system, mostly using three axially movable slide valve to control fluid flow direction, and the operating speed is based on the type of hydraulic system (quantitative system or system variables) and the valve opening size of the control by the operator or by auxiliary device to control.
Basic Requirements for Hydraulic Excavators Operating Control System
1) Hydraulic excavator operating control system is arranged to be concentrated in the cab, and meet the requirements of the human body function studies. For example, according to the 160-180cm tall of man, 150-170cm of woman to design, layout and operating device cab.
2) Hydraulic excavator Starting and stopping should be smooth manipulation, and control its speed and power. You can simultaneously control complex movements.
3) Simple manipulation, lightweight and intuitive. General operation force on the handle does not exceed 40-60N, while unilateral operations selection handle not more than 17cm, turning handle angle does not exceed 35-40 degrees. Rotation angle of the pedals does not exceed 60-70 degrees. Pedal stroke in the 6-20cm range, riding pedal power does not exceed 80-100N.
4) Hydraulic excavator Operating mechanism lever deformation smaller, clearance and air travel agencies to be small.
5) The number of joysticks and foot pedals should be as less as possible, better to handle and pedal linkage to facilitate the operator to do complex operations.
6) Should ensure the normal operational performance in the range of -40-50 degrees.