Position: Home > Articles > Design and Experiment of Full Hydraulic Drive High Clearance Tracked Vehicle
Transactions of the Chinese Society for Agricultural Machinery
2016,47
(1)
471-476
全液压驱动高地隙履带作业车设计与试验
作 者：
王宝山;王万章;王淼森;种东风;陈蒋
单 位：
河南农业大学机电工程学院
关键词：
履带作业车;液压驱动;高地隙;分流集流阀
摘 要：
针对玉米、烟草等高秆作物中耕管理作业需求,设计了一种液压驱动的小型遥控高地隙履带作业车。作业车采用龙门架式车架结构,可以在田间实现跨行行走和原地转向,液压系统中采用分流集流阀以提高作业车行走的直线性。为研究重心偏移和分流集流阀对作业车直线行驶稳定性的影响,在作业车左侧车架上添加不同配重,使用Solid Works软件对作业车重心偏移量进行精确评估,选取空载、添加2块和4块配重3种典型负载工况,对含有和去除分流集流阀的作业车行驶直线性进行仿真和样机试验。使用AMEsim软件对液压系统进行仿真表明:有、无分流集流阀时两侧马达稳定工作时转速差相对于总转速偏差分别小于1%和大于38%。样机试验表明,含有分流集流阀时偏驶率分别为4.12%、4.28%、4.62%;无分流集流阀时偏驶率为5.08%、6.54%、9.43%。仿真和试验结果表明,采用分流集流阀提高行驶直线性的液压方案可行,作业车直线行驶稳定性满足国家标准要求。
译 名：
Design and Experiment of Full Hydraulic Drive High Clearance Tracked Vehicle
作 者：
Wang Baoshan;Wang Wanzhang;Wang Miaosen;Chong Dongfeng;Chen Jiang;College of Mechanical and Electrical Engineering,Henan Agricultural University;Collaborative Innovation Center of Henan Grain Crops;
关键词：
tracked vehicle;;hydraulic drive;;high clearance;;synchro-valve
摘 要：
To complete the field management of tobacco corn and other high stalk crops,a small high clearance tracked vehicle with remote control and full hydraulic drive was designed. The vehicle was more compact than most of the vehicles which used mechanical transmission structures and it had better passing ability in the field. A synchro-valve was used to improve the straight driving stability of the vehicle. The effect of offset barycenter and synchro-valve for the straight driving stability of the vehicle was studied. Solid Works software was used to accurately assess the positions of the offset barycenter when the vehicle was no-load and put two or four counterweights on the left frame. The quality of each counterweight was 42. 6 kg. Torques of left hydraulic motor were 23. 19 N·m,32. 79 N·m and 42. 41 N·m.Torques of right hydraulic motor were 34. 28 N·m,34. 47 N·m and 34. 65 N·m. Static torque values were applied to the motors and AMEsim software was used to simulate the hydraulic system. Simulation results showed that the differences between the motors were less than 1% and more than 38% relative to the total speed when the system had or didn't have synchro-valve. The driving direction of the tracked vehicle was adjusted well on the dry and hard cement floor. The direction was marked with red rope and marked the end point 50 m away in right ahead of the vehicle. The vehicle was driven forward to the end point and the offset distance was measured. Deviation rate was equal to offset distance divided by 50. Prototype tests showed that when hydraulic system had synchro-valve,the deviation rates of the vehicle were4. 12%,4. 28% and 4. 62%. When hydraulic system didn't have synchro-valve,the deviation rates ofthe vehicle were 5. 08%,6. 54% and 9. 43%. Simulations and tests showed that using synchro-valves to improve the straight driving stability of the vehicle was feasible. Deviation rates of the vehicle could meet the requirements of the relevant national standards. This research could provide references for small high clearance tracked vehicles which were driven by hydraulic.
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