Built-in axle box mechanism for axle box built-in bogies

Abstract

The invention discloses a built-in axle box mechanism for a bogie with built-in axle boxes and belongs to the field of axle boxes for bogies of railway vehicles with axle boxes on the inner sides of wheel sets and auxiliary damping positioning devices of the axle boxes. The built-in axle box mechanism comprises a trapezoidal axle box, two ridged rubber spring pieces, a positioning towing bar, twospring piece positioning clips and a semicircular axle box collision-proof gasket. The built-in axle box mechanism has the advantages that with the ridged rubber spring pieces compared with traditional cone metal rubber springs featuring vertical bearing, the built-in axle box mechanism can obtain extremely high longitudinal stiffness while low vertical stiffness is guaranteed, so that high-speedstability of the vehicles is gained; the axle box mechanism is capable of preventing axial movement of the ridged rubber spring pieces effectively and substituting for previous additional axle box protective covers, and accordingly daily inspection of bearings is facilitated; a minimal curve passing radius of the bogie with the built-in axle box mechanism is decreased from at least 100 meters to at least 36 meters remarkably, so that turning maneuverability and flexibility of the novel bogie are improved substantially.

Description

technical field [0001] The invention belongs to the field of an axle box for a rail vehicle bogie with an axle box placed inside a wheel set and its auxiliary shock-absorbing positioning device, and in particular relates to a built-in axle box mechanism for a bogie with a built-in axle box. Background technique [0002] Traditional rail cars generally adopt an external axle box wheel set structure in which two axle boxes are respectively arranged at the axial ends of the axle 6-2 corresponding to the wheel composition 6. Such external axle boxes usually directly pass through the vertical conical metal rubber The spring-type positioning structure is linked with the frame, and its structure is exposed at the outer end of the axle 6-2, resulting in a large span between them and an insufficiently compact structure. Impact, the external axle box needs to add a protective cover, but this method not only brings inconvenience to the maintenance of the axle box, but also makes the di...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the existing axle box external wheel set structure in which two axle boxes are respectively arranged at the end of the axle of the corresponding wheel, the axle boxes are usually exposed at the outer end of the axle, resulting in a large distance span and an insufficiently compact structure, which is not conducive to The maneuverability of the bogie, such as turning and speeding up, is improved, but the newly developed rail vehicle bogie with a letter C-shaped axle box mount and the axle box placed inside the wheel set lacks a corresponding built-in axle box Therefore, the technical problem that the minimum curve passing performance of the bogie cannot be improved by reducing the distance between the axle boxes and the lateral span of the wheels, the invention provides a built-in axle box mechanism for the axle box built-in bogie

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