Hydraulic System Of Small Cut Sugarcane Harvester Design And Research

China is a large sugarcane planting country,and its sugar production ranks third in the world,but the sugarcane cultivation and harvesting mechanization level is low,especially in the harvest season,or traditional manual harvesting.At present,sugarcane harvesters developed at home and abroad have poor adaptability to the small and scattered,uneven hilly terrain of the sugarcane field,and cannot meet the flexibility and efficiency required by the sugarcane field.In view of the above problems,the thesis mainly studies the hydraulic system of small-cut sugarcane harvester,uses crawler-type walking mechanism to improve its adaptability,uses theory to analyze the speed matching relationship of each working mechanism,and integrates the hydraulic system of the working mechanism to reduce its volume.Improve the flexibility of the whole machine,and use simulation software to analyze the rationality and feasibility of its hydraulic system.This article focuses on the following aspects:(1)An overview of the overall structure of the sugarcane harvester and an introduction to its working process;analysis of the speed relationship between the main actuators and matching: theoretical analysis of the sugarcane lodging posture and the structure of the sugarcane lifter,the walking speed and the speed of the sugarcane lifter Carry out speed matching;theoretically analyze the working principle of double disc cutters,sugarcane non-leakage conditions and multi-knife cutting,infer the non-leakage conditions and multi-knife cutting conditions,and match the walking speed with the speed of the cutter;The overlap amount is analyzed theoretically,and the walking speed is matched with the conveying speed;(2)Based on the speed matching relationship between the actuators,combined with the actual working conditions and use requirements of the small-cut sugarcane harvester,comprehensively consider conditions such as reliability,efficiency,and economy,according to the various agencies of the sugarcane harvester.For the required actions and requirements,design and integrate the working hydraulic system;for the walking hydraulic system,compare open,closed systems,high-speed,low-speed solutions,variable pump speed control circuits,variable motor speed control circuits,and variable pumps-Different variable motor speed control circuits,determine variable pump speed control circuit schemes,and design the walking hydraulic system,and finally determine the complete machine hydraulic system;(3)According to the designed sugarcane harvester hydraulic system,query data and theoretical analysis,calculate the power parameters and working parameters of the sugarcane harvester working mechanism,analyze and select reasonable working parameters and select the main components of the hydraulic system For walking hydraulic system,the parameters of hydraulic components are calculated and selected according to the different load and speed requirements under operating conditions and transition conditions;the parameters and models of the hydraulic components of each mechanism in the complete hydraulic system are finally determined.(4)Use AMESim simulation software to establish a hydraulic model of a small-cut sugarcane harvester,simulate the hydraulic system of each working mechanism,analyze the dynamic response changes of the actuators in each hydraulic system,and analyze the starting conditions for the walking hydraulic system Speed ??response and system pressure response under braking conditions,transition conditions,and complex conditions;simulation results show that the vehicle hydraulic system solution can meet the requirements of the operating conditions,and provides a design for the hydraulic system of a small cut sugarcane harvester reference.