液压预应力拉杆油缸典型故障原因探讨  

Discussion on Typical Faults of Hydraulic Prestressed Pull Rod Cylinder

作　　者：吴远洪 杨莉华[2] WU Yuan-hong;YANG Li-hua(Panzhihua Steel and Vanadium Co.,Ltd.,Panzhihua 617062,China;Sichuan Institute of Mechanical and Electrical Technology,Panzhihua 617000,China)

机构地区：[1]攀枝花钢钒有限公司轨梁厂,四川攀枝花617062 [2]四川机电职业技术学院,四川攀枝花617000

出　　处：《液压气动与密封》2021年第5期81-82,共2页Hydraulics Pneumatics & Seals

摘　　要：某企业的万能轧机功能是轧制高精度钢轨的重要设备。万能轧机属于开式轧机,由传动侧和操作侧两部分机架牌坊组成,更换辊系时两机架牌坊分离,更换完辊系后两机架牌坊在轧线上合拢并锁紧,两机架牌坊在轧线上合拢并锁紧是依靠四件预应力拉杆在四个油缸的牵引力作用下实现的。即就是两机架牌坊分离时四件油缸要释放牵引力,两机架牌坊合拢后四件油缸要加上牵引力。在实际的更换辊系中,四件油缸出现了一件油缸只能加上牵引力,不能实现释放牵引力的故障现象(四件油缸是分别控制的),严重影响了万能轧机的有效作业率。故此,该文着重探讨分析了预应力拉杆油缸典型故障原因,从而找到了原因并加以排除解决。The universal rolling mill is a kind of open mill comprised of two pieces of mill housing by drive side and operation side,which is the key equipment for precision rail production in an enterprise.The transmission and work side mill housing is separate from each other in roll change mode,and then get linked till replacement of roll is completed and fastened tightly by four prestressed pull rods under the traction force of four individual hydraulic cylinders,that is,these four cylinders retract when the two frame archway disengage and stretch out when they closed.However,there might be a failure that only single hydraulic cylinder is in good functioning while the others do not work,resulting a critical reduction of the effective operating rate of the universal mill.Therefore,this article mainly takes a research on the prestressed rod cylinder typical fault diagnosis so as to find and solve it within the shortest time.

关 键 词：万能轧机 预应力拉杆 油缸 探讨 

分 类 号：TH137[机械工程—机械制造及自动化]