Track gauge block structure, function, and selection criteria
What is the main function of gauge blocks in a fastening system?
Gazette blocks are mainly used to adjust track gauge, ensure rail centering, transmit lateral forces, provide electrical insulation, buffer some vibrations, and protect the contact surface between the spring clip and the rail, reducing wear.
What materials are commonly used for gauge blocks, and what are their characteristics?
Common materials include nylon, reinforced nylon, and glass fiber reinforced plastic. These materials offer high strength, good toughness, stable insulation performance, aging resistance, and wear resistance, making them suitable for long-term outdoor use and in environments with track vibration.
What are the main forms of gauge block damage?
Common damage includes breakage, chipping, crushing, wear, aging deformation, and decreased insulation performance. These are often caused by improper installation, excessive impact, material fatigue, or environmental aging.
What precautions should be taken when replacing gauge blocks?
Use only the same model and specifications to ensure accurate track gauge; ensure proper installation without skewing; avoid damage from impacts; and simultaneously check the insulation condition of insulated sections.
How to select appropriate gauge blocks for different tracks?
High-strength reinforced type is selected for high-speed and heavy-load lines; wear-resistant and lateral pressure-resistant type is selected for curves and turnout sections; and high insulation type is selected for track circuit sections to ensure safety and reliability.