便携式木材绞盘机新型卷筒离合器设计

在利用便携式木材绞盘机进行木材生产试验过程中,发现卷筒离合器在分离与接合过程中易出现卡阻现象,从而影响集材生产效率。在对牙嵌式离合器结构进行受力分析和卡阻原因分析的基础上,基于Solid Works的建模分析设计方法,设计了一种新型多孔旋转圆柱式卷筒离合器,该方法有效缩短了新型卷筒离合器的设计周期。新型卷筒离合器采用圆柱销与圆孔的嵌合,代替牙嵌式离合器牙嵌轴与牙嵌套的嵌合,同等试验条件下,旋转柱销式卷筒离合器平均分离时间分别比柱销式卷筒离合器节省3.71 s、比牙嵌式卷筒离合器节省8 s,改善了便携式木材绞盘机卡阻后离合器分离困难的现象,节约了离合器分离时间,从而有效提高了便携式木材绞盘机在集材作业中的生产效率。

Novel design of reel clutches for improving production efficiency of portable timber harvesters

Timber production tests using portable timber harvesters at the cutting site have shown that the reel clutch of harvesters gets jammed during the continuous scissoring motion of the jaws,leading to lower production efficiency.To circumvent this,a new type of rotary porous cylinder reel clutch was designed by analyzing the stress force on the jaw clutch and exploring probable causes of jamming.The analytical modeling method in Solid Works was used to effectively facilitate the design process.The coupling of the jaw roller and the jaw sleeve in conventional reel clutches was replaced by fitting the cylindrical pin to the round hole in the new design.Under the same experimental conditions,the rotary cylinder pin reel clutch reduces 3.71 s and 8 s of average separation time compared to the cylinder pin reel clutch and the jaw reel clutch,respectively.Therefore,the novel reel clutch design reported here minimizes the occurrence of jamming and significantly improves the production efficiency of portable timber harvesters.