How to improve the hydraulic excavator

(l) Improve hydraulic system design. After many arguments, the final use of advanced priority valve and load sensing hydraulic steering gear form. The new system can give priority to the distribution of traffic in accordance with the steering requirements, regardless of the size of the load, the steering wheel speed can ensure adequate supply of oil, the remaining part can be fully supplied to the working device circuit, thus eliminating the power supply due to excessive steering oil supply Loss, improve the system efficiency, reduce the working pressure of excavator hydraulic pump.

(2) Optimize the design of boom cylinder and hydraulic pump to reduce the pressure of system work. Through optimization calculation, the boom cylinder adopts standard series 80/4. Hydraulic pump displacement increased from 10ml / r to 14ml / r, the system set pressure of 14MPa, to meet the boom cylinder lifting force and speed requirements.

(3) Pay attention to proper use and maintenance of loaders in the process of using, regularly add or replace hydraulic oil, maintain the cleanliness of hydraulic oil, and strengthen routine inspection and maintenance.