Study On The Hydraulic Driving System Of High-power With No-axle Hydrostatic Grader

High-power grader means the machine’s power is greater than500hp.It’s mainly used inmine road cleaning and maintenance. Application of the technology of hydraulic transmissionused in mechanical driving system belongs to a frontier topic. At present there is no productof hydraulic high-power grader neither in here nor abroad. And its study is still at thebeginning stage. This paper studies in the driving system of hydraulic High-power grader withon axis. As some reference for the development of the grader in driving system.Based on the comprehensive analysis of the existing driving system of high-power grader.Put forward a scheme of hydraulic driving with no axis and a scheme of hydraulic with axis.Through the two schemes, finally, confirm the scheme of hydraulic driving with no axis. Forthe500hp grader may adopt the double pumps and four motors in driving scheme, for the800-1000hp grader may adopt the four pumps and eight motors in driving scheme. Accordingto the load characteristics and the performance of the machine requires high-power grader.And match the parameters of the driving system. Then calculated and selection the parametersof the main components of engine, hydraulic variable pump, variable hydraulic motor etc. Inthe theoretical analysis on the transmission efficiency of the high-power grader in workingcondition and transition condition. And draw the curve of the traction characteristics andefficiency. Use the hydraulic simulation software of AMESim. Ride the modeling andsimulation of high-power grader. Through the simulation of the start, stop, different load andtraction characteristics show that the high-power grader with hydrostatic drive technologyscheme is feasible in theory.