SK107697A3 - Single-axle running gear with six pivot points for articulated trains - Google Patents

Abstract

With their lower weight and better sprung to unsprung weight ratio, articulated trains with a single axle between two adjacent units have advantages over conventional designs with four axles per unit. The running characteristics of prior art designs are unsatisfactory, however. The aim of the invention is to significantly improve the running characteristics by using single-axle running gear which is mounted on the common axle and has three pivot points for each of the units it joins together. The running gear (11) is mounted via suspension springs (122) on two wheels (121). In the middle, the running gear (11) is connected to adjacent units (31, 32) of the articulated train by tie rods (261, 271) hinged to the adjacent units (31, 32), while the sides of the running gear are connected to the adjacent units by springs (21, 22, 23, 24) with steering-control characteristics. In curves, the running gear (11) is steered round the curve by the springs (21, 22, 23, 24) as a function of the relative motion of the train units, resulting in a smoother ride.

Description

Single-axle bogie especially for articulated railway trains

Technical field

The invention relates to a suspension single-axle bogie which connects two adjacent members of a railway train.

The prior art

Articulated rail trainsets with a common axle between adjacent wagons have a lower weight and a more favorable ratio of unsprung mass to sprung compared to a conventional four-axle design. A major disadvantage is the unsatisfactory driving characteristics caused by imperfect axle guidance, especially under different loads. This drawback is remedied by various stabilizing devices, for example according to DE-AS 10 05 544, DE 21 53 866 C3, DE 22 59 924 C2, whose essence is that their bodies are pivotable around a common central drawbar and are connected to one another by stabilizing means elements located alongside the towing joint. However, these solutions do not provide the satisfactory required running characteristics of articulated rail trains, in particular the desirable silent operation.

SUMMARY OF THE INVENTION

The above-mentioned drawbacks are overcome by the solution according to the invention, which is based on the fact that the wagons of the railway train are articulated to each other by means of steering elastic elements with a single-axle bogie and in the longitudinal axis by traction elastic elements. In the longitudinal axis between the carriages and the one-axle bogie near the traction elastic elements, the regulating planar parts and the vertical part of the elastic element are fixed to one another. The solution of the resilient element has a number of embodiments, such as a bogie, which comprises a drive stator, to which the bogie joints on the sides are attached directly or on the body and are axial bogie joints in the longitudinal axis. Other chassis alternatives consist in the design of a support drive, for example in the form of an electric motor with a stator and separate rotors, in which the axles of the axle wheels are independently mounted.

The advantage of the solution according to the invention is the improved running characteristics of the trainsets under all conditions, whether plane on curves or on gradients and descents, as well as in combination with each other. In the case of a bogie comprising or consisting of a stator of the drive, in the case of an electric motor with separate rotors, it is possible to supply electricity to the line during regenerative braking and to eliminate wear of the wheels.

Summary of the drawings

In the accompanying drawings, the invention is shown in the general solution and in the exemplary embodiments, wherein FIG. 1 is a general basic solution of a single axle bogie. Fig. 2 shows the solution of FIG. 1 with the connection of two elements of the railway train. Fig. 3a shows a modification of the basic solution and FIG. 3b illustrates one particular embodiment of a resilient member between the axle and the wagon in a longitudinal axis in section. Fig. 4a shows a schematic bogie in a top view. Fig. 4b shows a side view of the kinematic behavior of the control elastic elements. Fig. 5 shows an integrated drive chassis solution and FIG. 6 shows a similar integrated solution with the possibility of independent drive of individual wheels.

DETAILED DESCRIPTION OF THE INVENTION

The articulated railway train consists of at least two wagons 31 and 32, which are mutually suspended with a bogie 11. On the bogie body 11, for example, wheels 121 and 121 are fastened by means of a spring element 122 and connected by an axle 12. bogie articulated joints 211. 221. 231 or 241 and in the center, in the direction of the travel axis, the person has bogie articulated joints 261 and / or 271. The bogie articulated joints 211, 221, 231 and 241 respectively are connected to the control elastic elements 21, 22, 23 and and / or 24, the other end of which is articulated to the carriage articulated joints 212. 222. 232. and 242 on the carriage elements 31 and 32 respectively. Axle bogie articulated joints 261 and 271 are articulated to the tension elastic elements 27 and / or 26. the other end of which is articulated to the central carriage articulated articulated joints 272 and / or 262 It is desirable that a resilient element consisting of a vertical part 42 and planar control sections 41 and 41 is provided in or near the axle between the bogie 11 and the carriage elements 31 and 32. The solution of this resilient element has a number of embodiments and can be integrated. One particular embodiment of the chassis 11 (FIG. 5) is formed by a drive stator housing 611 to which the chassis articulated joints 211. 221. 231 and 241 are attached as well as the axial chassis articulated joints 261 and 271. Another embodiment of the chassis 11 is formed by an electric drive 61 with two rotors 612 and 612 by which the wheels 121 and / or 121 are independently driven.

To clarify the functionality of the general solution of FIG. Figures 4a and 4b show a single axle bogie when passing in an arc, wherein solid line control elements 21 and 23 illustrate their straight line kinematics, dashed drawn elastic elements 21 and 23 illustrate their orientation when passing in an arc on the inner wall and on the outer On the other hand, the control elastic elements 21 and 23 are likewise indicated by dashed lines.

Claims (4)

A single-axle bogie for articulated trainsets comprising a body in which at least two wheels are supported by a spring on a common axis, characterized in that it has lateral control elements (21), (22), (23) and (24) respectively. ), by means of which it is articulated to the carriages (31) and (32) and has longitudinal elastic elements (27) and / or (26) which are similarly articulated to the carriages (31) and (32) in the longitudinal axis. A one-axle bogie according to claim 1, characterized in that the carriages (31) and (32) and the bogie (11) near their longitudinal axis are spring-loaded with a resilient element consisting of a vertical part 42 and planar control parts (41) and (41). 41 '). Disposable bogie according to claim 1 and / or 2, characterized in that it is constituted by a drive stator (611) on which the bogie articulated joints (211), (221), (231) and (241), respectively, are fastened to the sides. the longitudinal axis has axial bogie joints (261) and (271). Single axle bogie according to claim 1 and / or 2 and 3, characterized in that it is formed by an electric drive (61) with separate rotors (612) and (612) wheels (121) and (12 ') in the stator (611').