Suspension Method For Overhead Line Of Trolley Locomotive

Suspension method for overhead line of trolley locomotive. Through this article, you will be familiar with how to suspend overhead line of electric locomotive:

There are three ways to suspend the overhead line: rigid suspension, elastic suspension and chain suspension.

(1) Rigid suspension: Fix the hanging clamp with porcelain head holder on the wire steel beam or hardwood crossbar with special Karan, and the two ends of the profile steel or hardwood crossbar are cemented in the wall. This suspension method has strong stability and small protection. Moving the crushing station, but because the overhead line has no elastic buffering, the sliding pantograph has a large frictional force on the overhead line, which shortens the service life of the overhead line.

It is suitable for the roads with lower lanes, smaller cross-sections, fewer trips, and lower speeds (less than 10km / h), such as motor-locomotive garage lines, mobile lines, and underground lines passing through dampers. At this time, the pantograph of the electric locomotive should use the rolling touch.

(2) Elastic suspension: 2-14 strands of galvanized low-carbon steel wire with a diameter of 3.2mm are used to make horizontal suspension wires. Two tension insulators are used to insulate the overhead wires from the roadway. The overhead wires are clamped with suspension wire clamps. Porcelain hangers fix the hanger clamps and suspend the overhead wires on the horizontal hangers. The two ends of the horizontal hanging wire are hung on the hanging hook of the lane wall, and the horizontal hanging wire is tightened with a conditioner.

This suspension method has certain elasticity, so it is called elastic suspension. The elastic suspension has an elastic buffering effect on the overhead line, which can reduce the friction between the pantograph and the overhead line and reduce the wear of the overhead line. Therefore, it is widely used above and below the well. The running speed of the dry mill is 10-20km / h. However, because of the elasticity, the wire is easily swayed and damaged, and the amount of protection T is relatively large. It is suitable for situations where the roadway has a large cross-sectional area, a high height, and the motor vehicle pantograph is bow-shaped.

(3) Chain suspension: This suspension method can adjust the tension, and the suspension point has elasticity, which can be used for a long straight line with a driving speed of more than 20km / h, more driving times. This suspension method is generally used on the ground.