基于AMESim葡萄修剪机液压系统设计与仿真分析  

Design and simulation analysis on hydraulic system of grape trimmer based on AMESim

作　　者：蔡文龙 周艳[2] 贾首星[2] 温相源 何磊[2] Cai Wenlong;Zhou Yan;Jia Shouxing;Wen Xiangyuan;He Lei(School of Mechanical and Electrical Engineering,Shihezi University,Shihezi,832000,China;Xinjiang Academy of Agricultural Sciences,Shihezi,832003,China)

机构地区：[1]石河子大学机械电气工程学院,新疆石河子832000 [2]新疆农垦科学院,新疆石河子832003

出　　处：《中国农机化学报》2020年第10期41-47,共7页Journal of Chinese Agricultural Mechanization

基　　金：国家重点研发计划(2017YFD0701402);新疆兵团工业攻关计划项目(2016AB003);新疆兵团农业领域重点科技公关项目(2018AB016)。

摘　　要：葡萄生长期间进行适时修剪,可以减少不必要的营养流失,提高葡萄水肥利用率,但目前葡萄修剪还主要以人工修剪为主,手工修剪不但劳动强度大、生产效率低,而且长期的手工修剪对手指关节损伤大。手工修剪已经不适应现代化农业发展,且严重阻碍葡萄的规模化、标准化生产。使用CAXA软件绘制酿酒葡萄修剪机液压系统原理图的基础上,以葡萄修剪机液压系统中的举升油缸作为研究对象,根据实际需求计算油缸内径和活塞杆直径,并进行强度校核。确定液压系统压力为15 MPa,经过计算液压油缸工作负载为3 526 N,油缸内径为32 mm,活塞杆直径为20 mm。分析双作用单杆活塞在举升油缸内速度以及缸内液体变化规律,利用AMESim软件对举升油缸回路进行建模仿真,经过仿真建模验证活塞杆速度为0.148 3 m/s。并通过田间试验验证其液压回路的正确性。通过仿真结果图像分析工作负载、油缸内径、压力及流量的变化曲线,在田间试验中油缸进口压力达到预定压力15 MPa,出口压力为2.5 MPa,温度保持在29℃~35℃之间,符合设计要求。Proper pruning during grape growth can reduce unnecessary nutrient loss and improve the utilization rate of water and fertilizer in grapes, but currently pruning is mainly manual pruning. Manual pruning not only has high labor intensity and low production efficiency, but also long-term manual pruning The finger joints are damaged. Manual pruning is no longer suitable for the development of modern agriculture, and seriously hinders the large-scale and standardized production of grapes. On the basis of drawing the schematic diagram of the hydraulic system of the wine grape pruning machine using CAXA software, taking the lifting cylinder in the hydraulic system of the grape pruning machine as the research object, the inner diameter of the cylinder and the diameter of the piston rod are calculated according to the actual demand, and the strength is checked. The pressure of the hydraulic system was determined to be 15 MPa. After calculation, the working load of the hydraulic cylinder was 3 526 N, the inner diameter of the cylinder was 32 mm, and the diameter of the piston rod was 20 mm. The speed of the double-acting single-rod piston in the lifting cylinder and the change of liquid in the cylinder were analyzed. AMESim software was used to model and simulate the circuit of the lifting cylinder. The simulation and modeling verified that the piston rod speed was 0.148 3 m/s. And through the field test to verify the correctness of its hydraulic circuit. Through the analysis of the simulation results, the curves of the workload, cylinder inner diameter, pressure and flow were analyzed. In the field test, the inlet pressure of the cylinder reached the predetermined pressure of 15 MPa, the outlet pressure was 2.5 MPa, and the temperature was maintained between 29 ℃ ~35 ℃, which met the design requirements. Provide the necessary theoretical basis for the design of the hydraulic system of the grape pruning machine.

关 键 词：葡萄修剪机 仿真建模 举升油缸 液压系统 

分 类 号：TH136[机械工程—机械制造及自动化]