曲柄压力机转键离合器的改进

• 作 者: 钟光奇
• 机 构: 沈铁锦州工程处
• 出 处: 设备管理与维修
• 发表日期: 1991年08期
• 关键词: 曲柄压力机 副键 滑动轴承 密封装置 操纵机构 大轮 面接触 曲轴 润滑条件 接触面

目前中小型曲柄压力机采用的转键离合器,由工作键、副键与中套、前后外套、曲轴半圆槽等组成的滑动轴承副为面接触,离合器的前部没有密封装置,杂质很容易进入,而润滑油却又很快流出,润滑条件恶化,各接触面很快磨损、划伤,使离合器失灵。在更换时又必须将主动大轮、操纵机构、离合器拆卸,劳动强度很大。特别是曲轴上的半圆形键槽,磨损后很难修复,只得在其它部位完好的情况下报废,造成很大损失。

At present, the key clutch used in small and medium-sized crank press is composed of working key, auxiliary key and middle sleeve, front and back outer cover, semi-circular groove of crankshaft and so on. The front part of the clutch has no sealing device and impurities are easy to enter , But the lubricating oil flows out quickly, the lubrication condition is deteriorated, the contact surfaces are rapidly worn and scratched, which causes the clutch to malfunction. In the replacement must take the initiative to round, control agencies, clutch disassembly, labor-intensive. In particular, the semicircular keyway on the crankshaft is hard to repair after being worn and has to be scrapped under other parts in good condition, resulting in a great loss.