我公司一台PC200挖掘机，其铲斗的销轴与套、铲斗缸连杆一端的销轴与套，由于磨损造成短期内间隙急剧增大。曾更换过几次，但短期内间隙仍然达到3－5mm，以致影响工作。请问，有何办法才能使其使用寿命延长？答：反铲工作装置见图回。这两处的销轴经常处于泥砂、泥水中工作，一 A PC200 excavator of our company has its pin shaft and sleeve, and the pin shaft and sleeve at the end of the connecting rod of the bucket cylinder. Due to the wear, the clearance in the short term increases sharply. It has been replaced several times, but the short-term gap is still 3-5mm, which affects the work. Excuse me, what methods can we use to extend the service life? Answer: The backhoe working device is shown in the figure back. The pins in these two places are often working in silt and mud.