液压开口机是保证高炉能够连续生产作业并控制高炉出铁的一种关键设备之一，

液压开口机是保证高炉能够连续生产作业并控制高炉出铁的一种关键设备之一，三路铰是液压油通过液压管路实现开口机旋转和打击动作的一个中转站，起到支撑和连接液压管路的作用，也是液压系统设计小车行走过程中常使用的部件之一，但由于其工作环境恶劣，在使用过程中容易出现内部串油、管口开焊等故障，严重的影响着高炉的安全生产。本文主要是针对三路铰的工作原理及故障进行分析，通过取消三路铰，利用二连杆和胶管总成的组合进行替代，并对支撑铰轴进行改造，彻底解决了液压开口机存在的问题，取得了较好的效益。

Hydraulic opening machine is one of the key equipment to ensure continuous production and operation of blast furnace and control blast furnace tapping. The three-way hinge is a transfer station for hydraulic oil to realize the rotation and striking action of opening machine through hydraulic pipeline. It plays the role of supporting and connecting hydraulic pipeline. It is also one of the components often used in the traveling process of hydraulic system design trolley. However, due to its poor working environment, In the process of use, faults such as internal oil leakage and pipe opening welding are easy to occur, which seriously affects the safe production of blast furnace. This paper mainly analyzes the working principle and faults of the three-way hinge. By canceling the three-way hinge, replacing it with the combination of two connecting rods and rubber hose assembly, and transforming the supporting hinge shaft, the problems existing in the hydraulic opening machine are completely solved and good benefits are obtained.

Hydraulic tapping machine is one of the key equipment to ensure the continuous production operation of blast furnace and control the tapping of blast furnace. Three-way hinge is a transfer station for hydraulic oil to rotate and strike the tapping machine through hydraulic pipelines, which plays the role of supporting and connecting hydraulic pipelines, and is also one of the components commonly used in the traveling process of the hydraulic system design trolley. However, due to its harsh working environment, internal oil leakage and nozzle opening welding are prone to occur during use, which seriously affects the safe production of blast furnace. This paper mainly analyzes the working principle and fault of the three-way hinge. By canceling the three-way hinge, replacing it with the combination of two connecting rods and hose assembly, and reforming the supporting hinge shaft, the problems existing in the hydraulic opening machine are completely solved, and good benefits are obtained.