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我公司使用的sAQ-16交通液压汽车起重机,伸缩油缸漏油严重。我们更换了密封件,只能暂时不漏,使用数天后又开始漏油,且而越来越严重。我们将活塞杆抽出后,检查了各密封部位,发现油缸端内档O型密封圈受损,痕迹为刮、削所致。两活塞杆连接端截面处的磨损达0.30mm,使得在二节吊臂伸出时(第二节活塞杆伸出油缸)由于受载,活塞杆产生的挠度,使两活塞杆连接处出现刃口,在活塞杆伸缩时刮削O型密封圈,
The sAQ-16 traffic hydraulic truck crane used by our company has serious oil leakage from telescopic cylinders. We replaced the seals and only temporarily leaked. After a few days of use, we began to leak oil and it became more and more serious. After we extracted the piston rod, we inspected the seals and found that the O-rings on the end of the cylinder were damaged and the marks were scraped and cut. The wear of the cross-section of the two piston rods is 0.30 mm, which makes the two piston rod joints appear bladed when the two booms are extended (the second piston rod extends out of the cylinder) due to the load. In the mouth, scrape the O-ring when the piston rod is retracted.