CZ2012826A3 - Rail vehicle bogie - Google Patents

Abstract

The undercarriage for rolling stock consists of a frame (1) consisting of a pair of side members (11) connected by at least one cross member (12) to an H-shape. The axles (21) of the wheelset (2) are located in front of the ends of the side members (11) each the axle bearing (23) is housed in a housing (31) for angular work (3) hinged to the side member (11). A spring (4) is arranged between the opposite end (33) of the angle lever (3) and the stop (13) on the frame (1).

Description

Chassis for rail vehicles

Technical field

The invention is a conventional rail vehicle bogie comprising a frame consisting of a pair of longitudinal members connected by at least one H-shaped crossbeam. Such a bogie generally connects two adjacent rail vehicle wagons intended especially for regional, suburban and passenger transport.

BACKGROUND OF THE INVENTION

For regional, suburban and high-speed vehicles as a result of their operation on lines of local importance, multi-articulated vehicles equipped with conventional bogies on which the wagons of the two wagons meet are becoming increasingly widespread. Such two-axle bogies called the Jakobs bring a number of advantages. In particular, such bogies have a low weight, a low floor height from the top of the rail while maintaining good handling characteristics. Placing the ends of the wagons of two wagons on one bogie reduces the frequency of bogies needed, since the bogie thus established is common to two wagons, eliminating the need for couplings between vehicles. The chassis is connected to the cabinets either by pivots or tow bars. The primary suspension in this type of bogie is provided by springs incorporated between the bearing boxes at the end of the side members. The springs can be both coiled steel and elastometric. The springs are usually completed with hydraulic dampers. Such a primary suspension, which is supported from below by the longitudinal members, requires longitudinal members with a length in plan view overlapping the location of the springs on the bearing housing. This not only lengthens the side members but also increases the weight of the chassis frame.

SUMMARY OF THE INVENTION

The invention is an improved Jakobs bogie for rail vehicles, consisting primarily of a frame consisting of a pair of longitudinal members joined by at least one H-shaped crossbeam. The wheelset axles are positioned in front of the longitudinal end of each longitudinal bearing. A spring is arranged between the opposite end of the angle lever and the frame stop. By offsetting the axle bearings in front of the end members of the rails, the usable length of the rails and thus their weight is shortened, and at the same time the possibility of a lower height placement of the rails from the rail head along their entire length.

To better exploit the advantages offered by the proposed solution, it is advisable that the axle bearings are mounted on the axle between the wheels. This frees up space outside the wheelset axis and shortens the required length of the cross members. Bearing the axle bearings between the wheels of the wheelset stresses the axle much more favorably than their mounting outside the wheelset.

When opposed, the springs are supported against a common stop, such an embodiment is compact and the common stop also contributes to weight reduction. MO images on the drawingCt

An overall axonometric view of the assembled bogie of the rail vehicle is shown in Fig. 1, a view of the bogie frame is shown in Fig. 2, and a detailed view of the angular lever is shown in Fig. 3.

An embodiment of the invention

The bogie for rail vehicles consists of a frame 1 which consists of a pair of longitudinal members 11 connected by a pair of crossbars 12 in an H-shape. The axles 21 of the wheelset 2 are positioned in front of the ends of the longitudinal members 11. the lever 3 is articulated to the longitudinal members 11 by a pin 32 which is mounted in brackets 14 extending from the longitudinal members 11. A coil spring 4 is arranged between the opposite end 33 of the angular lever 3 and the stop 13 on the frame 1, like a hydraulic damper supported on the arm 34 extending from the angle lever 3 to the side. Brake discs 24 are also mounted on the axles 21 between the wheels 22, the mechanism of which is supported by brackets 15 extending from the crossbeam 12. Axle bearings 23 are supported on the axle 21 between the wheels 22. The opposite springs 4 are supported by a common stop 13 extending from the frame 1. The secondary suspension is provided by a pair of pneumatic bellows mounted on brackets extending from the side members 11 between the wheels 22 to the sides.

Claims (3)

Patent claims PV2O12-826 A bogie for rail vehicles formed by a frame (1) consisting of a pair of longitudinal members (11) connected by at least one cross-member (12) to an H shape, characterized in that the axles (21) of the wheelset (2) are positioned before the ends of the longitudinal members (11). the axle bearing (23) is housed in a housing (31) on an angular lever (3) articulated to the longitudinal members (11), wherein a spring (1) is arranged between the opposite end (33) of the angular lever (3) and the stop (13) 4). Chassis according to claim 1, characterized in that the axle bearings (23) are mounted on the axle (21) between the wheels (22). Chassis according to claim 1 or 2, characterized in that the opposing springs (4) are supported on a common stop (13).