摘要
四轮驱动拖拉机的驱动轮沿前轮辙行驶,在旱地、水田获得良好的牵引性能,因而得列广泛应用,有取代履带拖拉机的趋势。在水田,四轮驱动船式拖拉帆具有优良的越野、牵引性能,其后驱动叶轮除滑前驱动轮轮辙行驶外,还要求后驱动轮轮时沿前驱动轮刺孔行驶,这是更进一步的要求。该文是对沿前刺孔行驶的四轮驱动船式拖拉机动力学的专项试验研究,设计了三轮叶模拟试验装置,对前后轮叶刺孔的最佳偏移距或偏移率、前岳驱动叶轮轮叶的推力、承力和效率,以及影响效率的因素如滑转率、倾角、陷深、轮叶数等进行了深入的试验和探讨。
It was found that the second pass of a power-wheel would encounter less moving resistance and obtain higher efficiency. This led to the broad use of 4WD tractors and the tendency of using them instead of crawlers. In paddy field, the 4WD boat tractors were also proved to have excellent tractive efficiency and performance, with their power-wheel lug stepping along the previous cavities in ruts. A special experimental research was conducted on the dynamic performance of 4WD paddy tractor with its power-wheel lugs stepping along the previous cavities in ruts. A 3-lug model wheel of original size with sensors was designed to simulate this working condition. The optimum distance between the previous cavity of front-wheel-lug and the following cavity of rear-wheel-lug, the rate of cavity displacement, the lug pull and lift force, the lug efficiency and the influencing factors (slip, inclined angle, depth and number of lug) on performance were analysed and studied based on experiments in this paper.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
1995年第1期58-64,共7页
Transactions of the Chinese Society of Agricultural Engineering
基金
博士基金
关键词
四轮驱动船式
拖拉机
机耕船
轮叶
轮辙
刺孔
Four-wheel-drive(4WD) tractor Boat-wheel tractor Blade-lug Wheel rut Lug cavity
