Railway fish plate, also known as rail joint or rail joint bar, is a typical rail component in railway track system. Fishtail bolts are railway fasteners used together with railway fishplates.
Functions of Fish Plates:
The railway fishplate can effectively reduce the influence of wheels on the rail connection section, and increase the stability and continuity of the train when passing through the connection section.
Application of Fish Plates:
Track fishplates are widely used in the transportation of light rail, heavy rail and crane rails.
Light rail: 8kg, 9kg, 12kg, 15kg, 18kg, 22kg, 24kg, 30kg
Heavy rail: 38kg, 43kg, 50kg, 60kg
Crane rail: QU70, QU80, QU100 and QU120
There are a wide variety of railway fishplates with 4 or 6 holes, suitable for 60kg, UIC, 54kg UIC, 52kg UIC, 52kg, 90A, 90R, 80A, 75R, 60R, 115RE, 132RE, 50R guide rails, etc.
Types of Fish Plates:
According to different applications, rail fish plates can be divided into many types. Typical fish plate types include ordinary fish plates, insulated fish plates, non-standard fish plates, compromise fish plates and joggled fish plates
1. Common rail fish plates
Common rail fish plates are generally made of Q235 steel, which can be used for various types of rails. The appearance and weight of ordinary steel rail fish plates vary with the weight of the railway track. The main types of ordinary railway fishplates are 4 holes and 6 holes.
2. Insulating fish plates
The raw materials and production process of insulating fish plates are determined by the process standard of insulating materials. The size of insulating fish plates is the same as ordinary fish plates. Insulating fish plates are generally used in railway sections or leaky sections near power plants. Insulating fish plates can effectively prevent leakage accidents.
3. Non-standard fish plates
There are many types of non-standard rail fish plates in all rail fish plates. For the cross-section and speed of different railways, the difference between some rail joints and ordinary railway fish plates is determined. Generally, non-standard rail fish plates have three different weights, different pitches and different appearances.
4. Compromise fish plates
Compromise fish plates are different from non-standard rail fish plates. General compromise fish plates include protruding railway fishplates and railway turnout expansion joints. Compromise fish plates are basically customized, mainly used for turnout expansion joints or the appearance of some railway sections with special designs and requirements. Compared with other types of rail fish plates, compromise fish plates are difficult to process.
5. Joggled fish plate
Joggled fish plate is a special forged fish plate with a simple structure. It can quickly and temporarily repair the welded track joints, allowing the train to pass through the railway track at a reduced speed.
Maintenance of railway fish plate
When the train is running at high speed, the vehicle will produce huge impact and friction. Safe railway transportation requires high-quality, regularly maintained railway fishplates.
1. The use of fishtail bolts can improve the performance of railway fishplates
2. The nut can be tightened with a wrench
3. Carry out secondary maintenance after 1200 kilometers of railway operation. When repairing the railway fish plate, the fish bolt should be removed. If the clearance is too large, replace the fishtail bolt. At the same time, the connecting rod of the fishtail bolt should be replaced
4. In daily operation, pay attention to unstable operation or abnormal noise