a bogie

Abstract

The invention discloses a bogie, comprising a frame, a gear box, a traction motor, a wheelset and an axle, a six-link hollow shaft, and a suspension beam. A bearing seat which is horizontally cantilevered at the notch at one end of the through groove and fixedly connected to the beam body; along the longitudinal direction, the end of the beam body with the through groove is fixedly connected to the traction motor, and the closed cavity formed after the connection is sleeved on the The outer surface of the hollow shaft; the other end of the traction motor is suspended on the middle beam of the frame; the end of the beam body without a through slot is connected to the end beam of the frame through a hanger rod; the driven gear of the gearbox is sleeved with the bearing seat through a bearing. The invention adopts the elastic frame suspension mode of the driving device to solve the problem of lateral instability of the heavy-duty freight electric locomotive during high-speed operation; the gearbox adopts a non-load-bearing structure to solve the complex structure of the gearbox and the large load on the gearbox. The problem.

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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