自走式割灌机翻转机构的设计与分析

Flip mechanism design and analysis of self-propelled brush breaker

基于目前人工灌木林收割设备少、生产率低的现状,设计了一种新型自走式割灌机。根据割灌机的设计要求,将翻转机构设计安装在行走机架上,利用四圆锯进行灌木切割作业。针对翻转机构结构强度,利用ANSYS软件对模型进行有限元静强度分析。翻转轴为承载翻转机构的关键部件,分析其结构强度,并且利用ADAMS对翻转机构进行运动模拟仿真。结果表明,翻转轴的受力强度在许用应力范围内,翻转结构满足强度设计要求。通过ADAMS的运动分析可知锯片可实现一定角度翻转和高度运动,翻转机构可实现0°~60°范围的角度翻转,圆锯片亦可以在垂直高度100~120 mm范围内工作。

In the face of limited and inefficient shrub plantation harvesting equipment,a new type of self-propelled brush breaker was developed. According to the design requirements of the brush breaker,the cutting operation of shrubs was carried out by four circular saws with mounting the flip mechanism on a walking frame. The finite element analysis of static strength of flip mechanism was conducted by ANSYS software. As the key component of flip mechanism,the flip axis’ s structural strength was analyzed,as well as its motion simulation was emulated by ADAMS software. The results showed that the force strength of the roll axis is within the allowable range of stress,and the flip structural strength is meet the design requirements. The ADAMS motion analysis showed that the saws can achieve movement with a certain angle and altitude,the flip mechanism can achieve flip angle with a range of 0° to 60°,the circular saw blade can also work in the vertical height ranging from 100 to 120 mm.