登车桥http://www.iyunsun.com/负载主要表现为活塞杆停位不准、推力不足、速度下降、工作不稳定等，登车桥液压缸内部泄漏包括液压缸体密封、活塞杆与密封盖密封及活塞密封均磨损过量等引起的泄漏。活塞杆与密封盖密封泄漏的原因是，密封件折皱、挤压、撕裂、磨损、老化、变质、变形等，此时应更换新的密封件。
Ramps load mainly for piston stop bit inaccurate, insufficient thrust, slow down, job insecurity, etc, Ramps internal leakage of hydraulic cylinders including hydraulic cylinder seals, rod seals and piston seals and closures are excessive wear etc. caused by the leakage. Cause the piston rod and the sealing cap seal leaks, the sealing member wrinkle, crush, tear, abrasion, aging, deterioration, deformation, etc., we should replace with new seals.

登车桥http://www.iyunsun.com/活塞密封过量磨损的主要原因是速度控制阀调节不当，造成过高的背压以及密封件安装不当或液压油污染。其次是装配时有异物进入及密封材料质量不好，其后果是动作缓慢、无力，严重时还会造成活塞及缸筒的损坏，出现“拉缸”现象。处理方法是调整速度控制阀，对照安装说明应做必要的操作和改进；清洗过滤器或更换滤芯、液压油。
Ramps piston seal wear is mainly due to excessive speed control valve regulating properly, resulting in excessive back pressure and a seal improperly installed or hydraulic oil contamination. Followed by a foreign substance enters the assembly and sealing materials quality is not good, the consequences are slow, weak, can also cause serious damage to the piston and the cylinder, a "pull-cylinder" phenomenon. Approach is to adjust the speed control valve, the control installation instructions shall make the necessary operation and improvement; cleaning the filter or replace the filter, hydraulic oil.