Built-in wheelsets for axlebox built-in bogies

Abstract

The invention discloses a built-in wheel set for a bogie with built-in axle boxes and belongs to the field of wheel set devices for bogies of railway vehicles with axle boxes on the inner sides of wheel sets. The built-in wheel set comprises wheels and two built-in axle box devices, and each built-in axle box device comprises a trapezoidal axle box, two ridged rubber spring pieces, a positioning towing bar, two spring piece positioning clips and a semicircular axle box collision-proof gasket. The built-in wheel set for the bogie with the built-in axle boxes has the advantages that extremely high longitudinal stiffness can be obtained while low vertical stiffness is guaranteed, so that high-speed stability of the vehicles is gained; axle box mechanisms are 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 mechanisms is remarkably decreased from at least 100 meters previously to at least 36 meters, so that turning maneuverability and flexibility of thenovel bogie are improved substantially.

Description

technical field [0001] The invention belongs to the field of a wheel set device for a rail vehicle bogie with an axle box placed inside the wheel set, and in particular relates to a built-in wheel set for an axle box built-in bogie. Background technique [0002] like figure 1 As shown, traditional rail cars generally adopt two conventional axle boxes 8 that are respectively arranged on the axial ends of the axles 6-2 of the corresponding wheel components 6. The axle box external wheel set structure is generally They are directly connected to the frame through the vertical conical metal rubber spring type positioning structure embedded in the conventional axle box 8. The structure of the conventional axle box 8 is exposed to the outer end of the axle 6-2, resulting in a large distance span and insufficient compact structure. And in order to protect the external conventional axle box 8 structure protruding from the outside of the rails from accidental impact, the external axl...

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 railway vehicle bogie with a letter C-shaped axle box mount and the axle box placed inside the wheel set lacks a corresponding built-in wheel set 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 present invention provides a built-in wheel set for the axle box built-in bogie

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