Some Parts Design Of The Mountainous Micro-Cultivator & Tractive And Adhesion Performance Test

The research on the agricultural machines which applied in the areas of hillside has become one of the significant and difficult points in the field of the Chinese Agricultural Engineering. Confined by its complicated operation environment, the transportation and application of this kind of machine is an unsettled problem.This paper commissioned by the Department of Tobacco in Shaanxi dedicates to design a mountainous micro-cultivator which combines technical of hydraulic, agricultural machinery and digital design and manufacture, which aimed at accommodating the environment where the tobacco grows. Through conducting a tractive and adhesion performance test analysis the date quantificational, find out the optimal combination of the crawler structural parameter. The main research content of this paper lists as follows:(1) The chassis of this micro-cultivator employed the chassis of the 1YG type orchard mini-tiller, at the same time combined it's running system with Hydraulic balance adjust equipment.(2) Working parts utilize a bidirectional balance shovel based on parallelogram mechanism to accommodate the working environment of mountain.(3) Complete calculation, design and model selection of the hydraulic system of the micro-cultivator based on the theory of the hydraulic system.(4) Molding parts and components of the whole micro-cultivator utilize Pro/E in order to provide a platform for the further analysis via Analysis software and improve of this machine.(5) A prototype mountainous micro-cultivator was complicated based on the design and calculation.(6) The test of tractive performance was conducted. At the same time an orthogonal experiment was designed and conducted in order to find out the effects caused by changing the crawler structural parameter which includes Track Shoe Width (b), Caterpillar Supporting Section Length (L₀) and Track Shoe Grouser (h) on the adhesion performance. Through analysis the date quantificational, find out the optimal combination. The result indicates that Track Shoe Grouser plays a crucial role in improving adhesion performance. Because of its exits the adhesion performance enhanced by 26.64%, the optimal combination in trial stretch is: b =125mm, L₀=1020mm, h=28mm.The check index were listed as follows: ground clearance from 136 to 336mm, working width 30cm, designed tilling depth 25cm, maximum tractive force 3300N, Therefore theoretical basis is provided for caterpillar tread design of this kind of tractor.