摘要
为研究目前能够满足进行爬山而且能够自主作业的小型设备,提出一种步行割灌机行走部分的设计。阐述新型步行割灌机行走部分的工作原理和结构设计,以及对步行机构、行走机架和控制机构进行参数设计和计算。步行机构的行走是将动力传递到曲轴上的输入轴,由输入轴传递到凸轮,凸轮带动腿向前行走。对曲轴主轴径、长度、曲柄等参数进行设定,选用组合式曲轴,加入凸轮机构进行防震,利用两只脚通过连接板的连接,构成一组具有良好的结构稳定性、较强的机动性能和跨越能力、近似平行四边形的机构将步行机构设计出来。利用方钢管承载重力小,具有足够刚度,良好抗震性的特点将其应用于行走部分的行走机架,并与步行机构用曲轴相连接。采用牙嵌式离合器,依据离合器的接合过程对摩擦转矩进行分析,计算出控制机构主要参数。最后将该行走部分应用于步行割灌机,得到所需合理的爬山机构。结果表明:该设计可实现割灌机爬山和自主作业的功用。
In order to find out the small devices which can satisfy climbing and do autonomous task at present, this article puts forward a kind of walking part design of the walking brush breaker. It has clarified the working principle and structural design of the new walking brush breaker, as well as design parameters of the walking structure, walking frame and control structure in details. The structure transport the power is passed on to the input shaft of crankshaft, then the power transmission also by the input shaft to the cam and the cam driven legs to walking forward. The diameter of a crankshaft principal axis, length and crank are set, it chooses the combined crankshaft and takes in the cam structure to shock absorption. It uses two feet to connect the junction plate, in order to con-stitute a pair of approximate parallelogram walking structure. The structure has good structure stability, strong maneuverability and spanning capacity. The square steel tube has the characteristics of bearing small gravity and enough stiffness, good vibration resist-ance, so it is applied to walking part of the frame and uses the crankshaft to connect with the walking structure. The claw coupling is used in the control structure, based on the claw coupling engaging process, the friction torque is analyzed, and the diameter of control structure is designed. Until now, the reasonable parameters of the crankshaft and clutch control mechanism have been designed and the walking part of walking brush breaker overall layout has been ascertained. Finally, make the walking part used in walking brush breaker, so the reasonable mountain climbing structure has obtained. The result shows that this design can make the brush breaker^ climbing and autonomous task function has achieved.
出处
《森林工程》
2016年第5期48-54,共7页
Forest Engineering
基金
国家林业行业公益专项资助(201504508)
关键词
割灌机
爬山机构
行走部分
结构设计
brush breaker
climbing structure
walking structure
structure design
