Improvement And Design On The Hydraulic Driving System Of A Sugarcane Cultivator With Rhombic Chassis Of Four-wheel

Sugarcane is the main raw material of sugar industry in China. Sugar which is made of sugarcane accounts for over ninety percents of the total. Sugarcane is mainly planted in southern China like Guangdong province, Guangxi province, Yunnan province and Hainan province. For many years, sugarcane production is mainly done by human hand. So the production costs of sugar has been staying in a high position without going down for a while which leads a lower competitiveness in the international market. But as the agricultural population getting fewer and fewer in China, mechanization in sugarcane production is a tendency.Cultivation is a most important process in sugarcane production. The existing high ground clearance tractor can not meet the needs of sugarcane cultivation because of the row spacing. Carry out researching on sugarcane cultivator become meaningful. Thus a new kind of sugarcane cultivator with adjustable row spacing is made by South China Agricultural University.Hydraulic driving system is a critical part of the whole machine whose performance will have a profound influence on the reliability of the machine. Based on the hydraulic driving system of this machine, I have done some research as below:(1)Analyzed structure characteristics and working principle of the existing sugarcane cultivator in detail. Such defects as cannot running fast, lacking of driving force and large synchronization error are revealed by prototype tests. Considering agronomic requirements of sugarcane cultivation, a improvement method is come up.(2)Based on the improvement method, the driving force of the machine is recalculated, a new kind of traveling motor and other hydraulic component are selected. A kind of motor installation form and transmission mode are applie. The hydraulic driving system of the existing machine is also optimized.(3)Synchronization of two driving wheels is mainly depending on the flow distributing performance of a FCD valve. This article used AMESim to model and simulate the hydraulic driving system of the machine. The influence factors acting on synchronization performance of the two driving motors and the synchronization method using a FCD valve are analyzed.(4)Test after some improvement shows that the walking speed of the machine can reach 25km/h, the synchronization error is less than 2%, At the same time, synchronization of driving wheels improved significantly and the hydraulic driving system runs more stably.