农业工程学报2017，Vol.33Issue(16)：32-40,9.DOI:10.11975/j.issn.1002-6819.2017.16.005
高地隙折腰式水田多功能动力底盘设计与试验
Design and experiment of high clearance roll-waist multifunctional power chassis for paddy field
摘要
Abstract
Rice is the most important crop in China,which has the largest plant area,the highest per area yield and the most total output.The production scale of rice has important significance to the development of grain production safety.The field management of paddy field is important guarantee for rice growth and the construction of standardized farmland.At present,some regions in China are still in manual labor to manage paddy field,and the comprehensive mechanization has low level,poor quality,long operation period,and high labor intensity.Some Chinese scientific research institutes and agricultural machinery enterprises have focused on high clearance chassis technology,and developed a variety of related supporting work equipment.Most equipment are improved through transplanter chassis or four-wheel tractor,which have low ground clearance,high center of gravity,low working efficiency,and large turning radius,and cannot meet the requirements for paddy field management operations.In this case,a high-clearance roll-waist multifunctional power chassis for paddy field was designed,in view of meeting the agronomic requirements of rice planting in the northeast region of China.The overall structure,transmission scheme and working principle of the multifunctional chassis with power train were illustrated and analyzed.The three-dimensional model was used for its parametric modeling,and the model was imported to FEA (finite element analysis) software ANSYS Workbench 14.0 to analyze the carframe.Different experimental conditions were simulated to calculate stress and deformation of the frame,and the stress of the main deformed part was measured,which provided the basis for the weak area improvement and lightweight design of the following frame.The finite element analysis results showed that:Under the full load bending condition,the maximum stress experienced was 130.7 MPa at the roll of the balance device,and the maximum displacement was 1.56 mm at the rear carframe;under the full load condition,the maximum stress occurring was 255.44 MPa at the junction of the right rear suspension and the stringer,and the maximum displacement was 9.44 mm at the junction of the left and right beams of the carframe.On the basis,the steering performance,running performance and climbing ridge performance of the multifunctional chassis with power train were analyzed theoretically.The field performance experiment was carried out with the driving speed,the minimum turning radius,the maximum climbing ridge angle and height as response indices.The test results showed that:The driving speed in field road was 1-14 km/h,the driving speed in paddy field was 1-6 km/h,the minimum turning radius was 3 200 mm,and the maximum climbing angle and height were 56°and 533 mm,respectively.The high clearance articulated multifunctional chassis with power train can meet the requirements for paddy field management operations,which has the characteristics of high ground clearance,small turning radius and flexible operation.The research results in this paper can provide the comprehensive application basis and technical support for the effective implementation of paddy field management.关键词
农业机械/设计/试验/水田/动力底盘/高地隙/折腰转向Key words
agricultural machinery/design/experiment/paddy field/chassis with power train/high clearance/roll-waist分类
农业科技引用本文复制引用
王金武,唐汉,沈红光,白海超,那明君..高地隙折腰式水田多功能动力底盘设计与试验[J].农业工程学报,2017,33(16):32-40,9.基金项目
现代农业产业技术体系建设专项资金资助(CARS-01) （CARS-01）
国家重点研发计划项目(2017YFD0701305) （2017YFD0701305）
