Research on Wheel Loader Duty Cycle Test and Numerical Expression

Abstract

A method to establish duty cycle was proposed based on wheel loader operating characteristics and features. Firstly, wheel loader operating characteristics, energy consumption and power distribution rules were summarized theoretically. Wheel loader energy consumption rules were explored through operating test. The features were extracted from testing data which can represent wheel loader operating rules. Finally, the duty cycle was composed according to the rules features arose in the actual operating test. The duty cycle will provide support for data files for hybrid wheel loader power system matching, computer simulation and dynamic analysis. Furthermore, the duty cycle will be helpful for traditional wheel loader dynamic matching, simulation analysis and numerical optimization.

Development of loader scooping performance test platform oriented to the work process

“…through calculating transmission, work and steering hydraulic systems to establish a physical model and develope a real-time test program that tests the resistance formula caused by acceleration, slope angle, rolling friction resistance, steering force, etc. ; Zou Naiwei et al [5] created a loader cycle condition based on the test data such as driving speed, driving resistance, and overall machine quality, and described the most basic energy consumption rules during the operation from the operation terminal of the loader; Wan Yipin et al [6,7]conducted a comparative study on the test method and the compilation method of the load spectrum of the working device during the scooping operation of the loader. Existing research mainly focuses on operational resistance, energy consumption and work device load testing, etc.…”