光刃刀片切割甘蔗茎秆破坏过程高速摄像分析  

High-speed Photography Analysis on the Damage Process in Cutting Sugarcane Stalk with Smooth-edge Blade

作　　者：刘庆庭[1] 区颖刚[1] 卿上乐[2] 黄世醒[1] 

机构地区：[1]华南农业大学工程学院 [2]湖南工程学院机械工程系

出　　处：《农业机械学报》2007年第10期31-35,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(项目编号:50475178);广东省自然科学基金博士启动资助项目(项目编号:05300334)

摘　　要：在自制的单圆盘根切器试验台上,利用高速摄像机拍摄了甘蔗茎秆在光刃刀片切割时的破坏过程。分别对一刀切割和两刀切割模式下,发生根茬"无破损"、"蔗皮破损"、"劈裂破损"和"爆裂破损"的破坏过程进行了研究,分析了切割速度和切割方式对各种破坏模式的影响。结果表明:切割过程中甘蔗茎秆的破坏主要表现为在切割过程后期造成的蔗皮、蔗芯撕裂或劈裂;两刀切割时,甘蔗茎秆在被第1刀切割过程中发生扭转变形,甘蔗上段蔗皮、蔗芯撕裂严重,而根茬部分的破损较一刀切割时轻微;在本文试验条件下,采用光刃刀片切割时,刀片线速度应大于22m/s,以满足收割机对根茬切割质量的要求。By using the self-made test equipment of single-disk base cutter, high-speed photography tests on the damage process in cutting sugarcane stalk with smooth-edge blade were done. Sugarcane stubbles＇ damage modes of ＂no damage＂, ＂edge damage＂, ＂split damage＂ and ＂shatter damage＂ under one-blade cutting or two-blade cutting process were individually studied. The influences of cutting speed and cutting modes on damage modes were also researched. It is found that the damage of the stalk in cutting mainly expressed as stalk＇s bark or core tearing, and stalk splitting. When two-blade cutting, the stalk was twisted in the first blade cutting, the top segment＇s bark and core were tore seriously, and the stubble damaged lightly than in one-blade cutting. The smooth blade＇s cutting speed should be above 22 m/s in order to meet the requirements on stubbles＇ cutting quality of sugarcane harvester.

关 键 词：甘蔗 茎秆 切割破坏 高速摄像 试验 

分 类 号：S225.53[农业科学—农业机械化工程]