High-speed carriage-axle gearbox

Abstract

The invention relates to a high velocity axle gear box of the large-scale maintenance machinery for railway, including case, striking gear for blocks changing, castellated shaft, driving toothed gear, mid-gear , dummy shaft, layshaft drive gear, driven gear, pillow, lube oil system and wagon axle. The driving toothed gear engages castellated shaft through the internal spline, and it also can engage or divorce idler gear. The layshaft drive gear engages the driven gear, which is fixed on the wagon axle. The drive gear is a duplicate one including the first and the second, and the idler gear contains the high gear and the low one. The shifting yoke in the striking blocks changing gear connects with the drive gear in a driven motion. And the yoke can make the engagement or abscission between the first gear and the idler gear or between the second gear and the idler one, when it drives the driving toothed gear and shifts toward the axial direction on the castellated shaft. This invention with a sample and rational structure can be manufactured easily and fulfill the request for line feed of a high speed and united hitch moving.

Description

technical field [0001] The invention relates to a driving and traveling transmission system device, in particular to an axle gear box of a large-scale railway maintenance machinery. Background technique [0002] Axle gearbox is an important part of the vehicle running transmission system. It is a transmission mechanism used to transmit power and change the external input torque and speed to meet the operating requirements of the vehicle under different working conditions. With the rapid development of my country's railway industry, the axle gearboxes of large-scale railway maintenance machinery and vehicles can not only meet the requirements of low-speed operation and high-speed self-propelled operation (maximum self-propelled speed 100km / h), but also meet the requirements of linked operation (highest self-propelled speed of 100km / h). The special requirement of the coupling speed is 120km / h). At present, the axle gearboxes of large-scale railway maintenance machinery vehicle...

AI Technical Summary

Problems solved by technology

At present, whether it is imported or domestically produced, the axle gearboxes of large-scale railway maintenance machinery vehicles cannot meet the above requirements due to the following reasons

For example: the 08-32 type tamping vehicle auxiliary drive axle gearbox imported from Austria Plasser&Theurer Company is only one-stage gear reduction transmission, the speed ratio is small, and the transmission power is small, so it cannot meet the requirements of high-speed running and coupled operation; another example is the introduction of Although the axle gearbox of the PGM-48 rail grinding vehicle of Jackson Corporation of the United States is a two-stage gear reduction transmission, the transmission speed ratio range is large, and the transmission power is improved, but because of the thin-walled meshing sleeve with internal and external splines Engaging or disengaging with the gear shaft with external splines and the gear with internal splines, the thin-walled meshing sleeve also has inverted bevel teeth, so it is difficult to manufacture the thin-walled meshing sleeve, and there are many matching parts on the gear shaft. The requirements are high, the force is complicated, the processing is difficult, the structure is unreasonable, and it is difficult to meet the operation requirements of high-speed running and coupling; another example is the axle gearbox of the domestic SPZ-200 ballast distribution and shaping vehicle, which adopts two-stage gear reduction transmission, and the transmission The speed ratio range is large, but the transmission power is small and the structure is relatively complicated

Because it uses many gears and the designed transmission chain is very complex, it is bulky, and there is a set of shifting mechanisms powered by oil cylinders on the high-speed shaft and the intermediate shaft. The gear shifting of the intermediate shaft with internal and external splines further complicates the structure and makes it difficult to manufacture, use and maintain

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