Железопътна риба

A fish plate (or joint bar) is a metal connector used to join two rail ends at a gap, serving the following functions:Load Transfer: Distributes wheel forces to reduce impact stress at the joint.Gauge Maintenance: Keeps rails aligned to standard track gauge (1435mm).Thermal Expansion: Allows rail expansion/contraction (typical gap: 6–8mm).Electrical Continuity (except for insulated types).