The Improvements and effects for the impossibility of lifting the movable arm belt
(l) Improving hydraulic system design. After several demonstrations, the advanced preferential valve and load sensing full-hydraulic steering gear are finally adopted. New system can be in accordance with the requirements for steering, givung the distribution of flow, whatever the load size and the steering wheel rotation speed to ensure oil supply is adequate. The rest can be used all the work device of the supply circuit, eliminating the loss caused by steering loop oil supply too much power, improving the efficiency of the system, reducing the working pressure of hydraulic pump.
(2) Optimizing the design of movable arm oil cylinder and hydraulic pump modeling to reduce the operating pressure of the system. Through optimization calculation, the movable arm cylinder adopts the standard series 80/4. The hydraulic pump capacity is increased from 10ml/r to 14ml/r, and the system setting pressure is 14MPa, meeting the lifting force and speed requirements of the movable arm oil cylinder.
(3) In the process of use, attention should also be paid to the correct use and maintenance of the loader. The hydraulic oil should be added or replaced regularly. The cleanliness of the hydraulic oil should be maintained, and routine inspection and maintenance should be strengthened.