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Gear coupling drives are widely used in power-distributed electric passenger trains, subways and light rails because of the limited power transfer that can be transmitted by the couplings. Of course, to ensure the safe operation of the locomotive, while minimizing the unsprung mass, it is also necessary to ensure that the torque output from the motor can be smoothly transmitted to the wheel pair. This requires that between various parts of the drive unit under various extreme motion conditions. There will be no interference. To do this, it is first necessary to accurately analyze the dynamic range of motion to determine the proper design of the components in the drive and the characteristic parameters of the elastic components used. The motion modes of the above several types of driving devices are basically similar, but each has its own characteristics, in which the dynamic range of motion of the gearbox coupling drive device is briefly analyzed.
The traction motor is supported on the frame at three points, and the motor quality is all a series of sprung mass. The torque output from the motor is directly transmitted to the pinion shaft through a gear coupling. The pinion and its shaft are mounted on the tapered roller bearing. Inside the gearbox. One end of the gear box is seated on the axle through the tapered roller bearing, and the other end is suspended on the frame by a boom and a rubber element, and the pinion shaft torque is transmitted to the wheel pair through the large gear. At the present stage of the motion analysis, almost all of the locomotives or the locomotives are equipped with two-stage elastic suspension. Under the static conditions of the locomotive and the static conditions of the locomotive, the axial line of the traction motor shaft and the axis of the axle are basically parallel.