Types of Rail Joints According to Application
Ordinary Rail Joint: This refers to the standard coupling joint between two rails, typically achieved using splints and bolts for connection. It's used in the installation of both standard and non-standard rails.
Compromise Rail Joint: These joints connect rails of different types by utilizing special-shaped splints and pads to ensure alignment of the rail surfaces and heads. Special-shaped rails are required for positive line rails when using special-shaped joints.
Conductive Rail Joint: These joints serve as connectors for conducting rail current, commonly used in automatic blocking sections and electric traction areas. They typically consist of two galvanized iron wires inserted into round holes in the rail waist or welded into steel sleeves at the rail head using a steel wire cable.
Insulated Rail Joint: Also known as glued insulated rail joints, these are used in automatic blocking sections to prevent the passage of track circuits between adjacent blocked sections. Insulated rail joints employ nylon rail headers, splints, and bolt sleeves to separate the rail components and prevent current flow, thus serving as insulators.
Welded Rail Joint: These joints are created by welding rails together using methods such as resistance welding, small gas pressure welding, or thermite welding. They are commonly used in seamless rail lines for enhanced durability and stability.