Qiu Lin writer Kim Moon House special trucks have grown flat cars, falling hole car, female car, clamp vehicles.
S11 type caboose schematic car chassis beams, side sills are made into a fish shape, the purpose is to reduce vehicle weight and lower center of gravity.
(1) allows the vehicle's center of gravity falls on the center line of the line, in order to reduce or avoid hunting vehicle movement, the wheel on the more smoothly through the curve, reducing wheel slide on the rail;
Vehicles running on the line, both due to the axle load to bear, but also to continuously rotate the axle so the heat would have caused friction between the journal and the bearing or roller bearing inner and outer rings, the shaft temperature rise. If the axle after the rise in temperature reaches a certain level, while maintaining a normal temperature, which is the normal movement of the vehicle axle caused by heating, the heat does not belong to the axis, generally referred to as operating heat. If for some reason or destruction of rolling bearing lubrication conditions with the journal and the inner child, between the outer ring, or make them in an abnormal position or status, causing uasc online the axle to produce more than the normal temperature of the heat, then known as the hot shaft . After the hot axle failure, if not timely detection, processing, ranging from causing train delays, halfway rejection car; weight may cause cut-axis (ie journal break, cut the shaft axis failure caused by heat is called earnest), causing uasc online the vehicle major accidents and train derailment subversion. Currently using the second generation surveillance systems to monitor Hotbox Hotbox.
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