摘要
针对目前姿态调整式丘陵山地拖拉机只能实现静态调平和差高调平、调平精度低等问题,设计了一种轮式丘陵山地拖拉机扭腰姿态调整装置,该装置通过调整前后车身的相对转动来实现丘陵山地拖拉机对复杂路面的适应。首先,根据丘陵山地特殊作业要求,对拖拉机坡地作业稳定性进行研究,设计了扭腰姿态调整装置;然后,对扭腰姿态调整装置进行动力学仿真,建立轮式拖拉机模型并进行多工况动力学仿真分析,仿真试验结果显示,扭腰姿态调整装置最大转动角为15.2°,拖拉机纵向坡行驶保持稳定的最大倾角为23.2°,横向坡行驶保持稳定的最大倾角为16.8°;最后,进行了样机田间试验,田间试验结果表明,扭腰姿态调整装置平均转动角为15.03°,拖拉机最大纵向爬坡角为25.6°,最大横向爬坡角为16.2°;在坡度为15°的地面上,旋耕作业平均生产率为0.65 hm^(2)/h,犁耕作业平均生产率为0.36 hm^(2)/h,该拖拉机能够较好地适应丘陵山地环境,满足丘陵山地正常作业需求。
Aiming at the current attitude-adjustable hilly tractors can only achieve static leveling,height difference leveling,and low leveling accuracy,an attitude adjustment device of the twisting and swinging wheel hilly tractor was designed.This device realized the tractor's adaptation to complex roads by adjusting the relative rotation of the front and rear vehicle bodies.Firstly,according to the requirements of the special pavement in hilly areas,the stability of tractors on slopes was studied,and a twisting and swinging attitude adjustment device was designed.Then,dynamic simulation of twisting and swinging attitude adjustment device was carried out,model of the tractor was established,and dynamic simulation analysis of multiple working conditions was performed.The dynamic simulation showed that the device maximum rotation angle was 15.2°,the maximum inclination angle for the tractor to maintain stability on longitudinal slopes was 23.2°,and the maximum inclination angle for stable driving on transverse slopes was 16.8°.Finally,field trials of prototypes were conducted.The test results showed that the average angle of rotation of the twisting and swinging attitude adjustment device was 15.03°,the maximum longitudinal climbing angle of the tractor was 25.6°,and the maximum transverse climbing angle was 16.2°.The average productivity of rotary farming was 0.65 hm^(2)/h,and the average productivity of plow farming was 0.36 hm^(2)/h on the ground with a slope of 15°.The tractor met the design and technical requirements,and can better adapt to the hilly and mountainous environment,and it can meet the normal operation requirements of the hilly and mountainous areas.
作者
张开兴
张斓
李政平
殷月鹏
刘贤喜
赵秀艳
ZHANG Kaixing;ZHANG Lan;LI Zhengping;YIN Yuepeng;LIU Xianxi;ZHAO Xiuyan(College of Mechanical and Electronic Engineering,Shandong Agricultural University,Taian 271018,China;Shandong Wuzheng Group Co.,Ltd.,Rizhao 276800,China;Shandong Provincial Engineering Laboratory of Agricultural Equipment Intelligence,Taian 271018,China;College of Information Science and Engineering,Shandong Agricultural University,Taian 271018,China)
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2022年第6期425-433,共9页
Transactions of the Chinese Society for Agricultural Machinery
基金
国家重点研发计划项目(2016YFD0700502)
山东省自然科学基金项目(ZR2021ME181)
山东省重点研发计划项目(2019GNC106120)。
关键词
丘陵山地
轮式拖拉机
扭腰姿态调整装置
多工况动力学仿真
试验
hilly
wheeled tractor
twisting and swinging attitude adjustment device
multi-conditions dynamics simulation
test
