Positioning split type auxiliary frame work steering frame

Abstract

The invention relates to a positioning split type deputy frame bogie, in particular to a bogie used for a railway freight car, and belongs to the technical field of the railway vehicle and the machinery. The bogie comprises two wheel pairs, a side frame, a bolster and wheel pair radial devices, rolling bearing devices are in press mounting at two ends of each wheel pair, and wheel pair radial devices are respectively mounted on four rolling bearing devices on the two wheel pairs. The key technology is that the U-shaped deputy frame is assembled from a U-shaped deputy frame body and an adapter positioning group. The invention has the advantage that only the adapter which is worn to the limit is required to be replaced when the U-shaped deputy frame is overhauled, and the entire U-shaped deputy frame is not required to be replaced, thereby saving the cost of overhaul and facilitating the maintenance.

Description

technical field [0001] The utility model relates to a positioning split sub-frame bogie, relates to a bogie used for railway freight cars, and belongs to the technical field of railway vehicles and machinery. Background technique [0002] In order to adapt to the rapid development of my country's railways, new railway equipment is constantly emerging. Taking truck bogies as an example, it has developed from Zhuan K1, Zhuan K2, Zhuan K4, etc. to the current Zhuan K5 and Zhuan K6 in just a few years. The common problems of these bogies are: the unsprung mass is large, the wheel-rail force is large when passing a curve, the wheel-rail wear is serious, and there is always an irreconcilable relationship between improving the stability of the bogie’s lateral movement and improving the bogie’s curve passing performance. contradiction. With the increase of bogie axle weight and speed, the problem of wheel and rail wear becomes more serious. The wear and tear of the wheel and rail...

AI Technical Summary

Problems solved by technology

The common problems of these bogies are: the unsprung mass is large, the wheel-rail force is large when passing a curve, the wheel-rail wear is serious, and there is always an irreconcilable relationship between improving the stability of the bogie’s lateral movement and improving the bogie’s curve passing performance. contradiction

Increased wheel and rail wear greatly shortens the service life of wheels and tracks, resulting in a sharp increase in the maintenance costs of wheels and tracks

The emergence of the Zhuan K7 bogie has achieved good results in reducing the wheel-rail force and wheel-rail wear. However, due to design defects, its U-shaped sub-frame is an integral sub-frame. Inconvenient, the U-shaped sub-frame that wears to the limit must be replaced as a whole, thus increasing the maintenance cost

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