摘要
9GSCC-1.4H水草收割机往复式切割装置不同于牧草收获机械切割装置,其割刀传动装置位于切割器的后面,且曲柄连杆与水平面成一定角度,割刀传动零件拨叉主动臂与从动臂不在同一平面内,切割过程中拨叉与动刀组拨杆接触的运动轨迹为空间弧线的线接触,同时在拨叉和拨杆间有冲击振动,加快了拨叉与拨杆的磨损,缩短了切割装置的使用寿命。为此,对9GSCC-1.4H水草收割机切割装置进行了动力学分析,针对切割装置存在的问题,对割刀传动装置进行了结构改进设计:将拨叉从动臂改为摇杆,曲柄连杆与小拨叉铰接,小拨叉通过中间连杆驱动摇杆往复摆动,小拨叉和中间连杆用球轴承连接消除空间曲线轨迹对连杆的作用,摇杆驱动切割器实现往复切割运动。
The reciprocating cutting device of the 9GSCC-1. 4H aquatic weed harvester is different from cutting device of the forage harvesting machinery. The cutter gear of the reciprocating cutting device is assembled behind the cutter,and the crank and connecting rod of the reciprocating cutting device has a certain angled with cutter in the water,the active arm of the fork,part of the gear cutter,is not in the same plane with the slave arm,in the cutting process ,the motion trace of the line contact between fork and lever is a space curve,at the same time there is shock and vibration between the fork and lever,which accelerate the abrasion,shorten the life of the cutting device. By making a dynamic analysis for the cutting device of the 9GSCC-1. 4H aquatic weed harvesters,proposed the cutting device＇s problem,the gear cutter was improved for the structure,the fork was changed into to a joystick,crank and connecting rod articulated with small fork,small fork drave joystick swing back and fort through intermediate link,small fork and intermediate link connecting with the ball bearings to eliminate space curve tracks the role of the connecting rod,rocker-driven cutter to achieve reciprocating cutting motion.
出处
《农机化研究》
北大核心
2010年第9期69-72,共4页
Journal of Agricultural Mechanization Research
基金
国家自然科学基金项目(30160022)
国家科技成果重点推广计划项目(2002EC000128)
