螺旋推进式滩涂贝类采捕设备行走装置研制  

Development of the walking system for spiral-propelled tidal flat shellfish harvesting device

在线阅读下载全文

作  者:梁喜凤 陆鑫煜 郑立文[2] 王永维[3] LIANG Xifeng;LU Xinyu;ZHENG Liwen;WANG Yongwei(College of Mechanical and Electrical Engineering,China Jiliang University,Hangzhou 310018,China;Chaoyang Teachers College,Chaoyang 122000,China;College of Biosystems Engineering and Food Science,Zhejiang University,Hangzhou 310058,China)

机构地区:[1]中国计量大学机电工程学院,杭州310018 [2]朝阳师范高等专科学校,朝阳122000 [3]浙江大学生物系统工程与食品科学学院,杭州310058

出  处:《农业工程学报》2024年第24期11-19,共9页Transactions of the Chinese Society of Agricultural Engineering

基  金:国家自然科学基金项目(32372007,31971796)。

摘  要:针对目前滩涂贝类采捕设备存在驱动部件沉陷量大、装置运载能力差等问题,设计了一种基于螺旋推进原理的滩涂运输行走装置,并对该行走装置进行结构设计与样机试验。利用DEM-MED(discrete element method-multibody dynamics)耦合仿真技术,对影响行走装置工作性能的螺旋叶片升角、厚度以及高度等关键结构参数进行仿真模拟。并以仿真结果为依据设计三因素三水平正交试验,获得螺旋升角、叶片高度、厚度的最优组合为叶片升角25°,叶片高度150 mm,叶片厚度7.5 mm。试制试验样机并进行空载和负载工作性能试验。结果表明:行走装置在空载、负载10和15 kg时的滑转率分别为46.92%、63.48%以及58.35%,滑转率随负载的增加呈上升趋势;沉陷量分别为47.59、60.09和70.22 mm,与负载呈正比例关系,比例系数1.512;系统的额定负载约为8 kg,极限负载约为21.61 kg,在滩涂环境中具有较好的运载能力。研究结果可为开发适应性与工作效率更高的滩涂贝类采捕设备奠定基础。Most of the tidal flat shellfish harvesting equipment predominantly employed tracked or wheeled walking devices,which encountered issues such as significant sinking of the driving components during operation,poor load-carrying capacity of the devices,and high maintenance costs in the later stage.Therefore,this paper designed a tidal flat walking device based on the principle of spiral propulsion,which could be used for transportation,and conducted structural design and experimental research on the walking device.The impact of the spiral blade structure on working performance was analyzed by using DEM-MBD(discrete element method-multibody dynamics)coupling simulation technology.A single-factor test was carried out to identify the optimal range for height,thickness,and helix angle of spiral blade on the walking mechanism.Subsequently,a three-factor and three-level orthogonal test method was then used to determine the optimal design parameters of blade.Finally,no-load and load operating performance tests were carried out on an experimental prototype,which was constructed according to similar criteria to evaluate the working performance of the designed running gear.The results indicated the following:1)When all factors were independent,the slip rate of the walking device increased with higher helix angles.Both the traction force and working efficiency of the walking device initially increased and then decreased with higher helix angles.The slip rate of the walking device increased with the thickness increased,while working efficiency and traction coefficient of the walking device followed an initial increase and then decrease pattern.On the other hand,increasing the height-to-diameter ratio resulted in a decrease followed in slip rate of the walking device.The traction coefficient,increased overall with higher height-to-diameter ratios,with working efficiency exhibiting a similar trend.2)The walking device demonstrated optimal driving performance with a helix angle of 25°,a height of 150 mm,and a thickness of 7.5 mm

关 键 词:土壤 模型 试验 螺旋驱动 离散元法 

分 类 号:S9722[农业科学—捕捞与储运]

 

参考文献:

正在载入数据...

 

二级参考文献:

正在载入数据...

 

耦合文献:

正在载入数据...

 

引证文献:

正在载入数据...

 

二级引证文献:

正在载入数据...

 

同被引文献:

正在载入数据...

 

相关期刊文献:

正在载入数据...

相关的主题
相关的作者对象
相关的机构对象