Bogie

Abstract

The invention discloses a bogie. The bogie comprises a framework, a gearbox, a traction motor, wheel pairs, a wheel axle, a six-connecting-rod hollow shaft and a suspension cross beam; the suspensioncross beam comprises a beam body, a through groove and a bearing seat, wherein the through groove is transversely formed in the beam body; and the bearing seat is transversely arranged in the groove opening of one end of the through groove in an overhanging manner and fixedly connected with the beam body; one end, with the through groove, of the beam body is fixedly connected with the tractor motor in a longitudinal manner; a sealed cavity formed after connecting one end, with the through groove, of the beam body with the tractor motor sleeves the external surface of the hollow shaft; the other end of the tractor motor is suspended on a middle cross beam of the framework; one end, without the through groove, of the beam body is hooked with a framework end beam through a lifting rod; and adriven gear of the gearbox is sleeved with the bearing seat through a bearing. The bogie has the advantages that a problem of cross instability of heavy-duty freight electric locomotive in the high speed running process is solved by using a driving device elastic suspension mode; and problems of complicated gearbox structure and heavy load on the gearbox are solved because the gearbox adopts a non-load structure.

Description

technical field [0001] The invention belongs to the field of rail transportation, and in particular relates to a bogie. Background technique [0002] At present, the operating speed of heavy-duty freight electric locomotives is generally below 120km / h, and its driving devices (including traction motors, gearboxes, etc.) are generally mounted on shaft suspension. Such as figure 1 As shown, one end of the traction motor 3 is rigidly fixed together with the axle box 300 through a hexagon bolt, and the axle box 300 is suspended on the axle 5 through two sets of bearings; the other end of the traction motor 3 is elastically suspended on the frame through a set of suspenders. on the middle beam. The driven gear 21 is assembled with the gear hub 400 through bolts, and the gear hub 400 is installed on the axle 5 with interference, and drives the wheel pair to rotate together when moving, thereby driving the whole vehicle to move forward. This method results in a heavy load on the...

AI Technical Summary

Problems solved by technology

For fast and heavy-duty electric locomotives, if the gearbox adopts the above-mentioned load-bearing structure, the heavy load will increase the complexity of the gearbox structure and cause the gearbox to be more easily damaged

[0006] In addition, as the running speed of the locomotive increases, the change of the air pressure distribution inside the gearbox becomes more uncertain, and the oil lubrication method will greatly increase the risk of oil leakage in the gearbox

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