SK18794A3 - Yoke suspension of leaf spring for bogies of rail vehicles - Google Patents

Abstract

The invention relates to a chain-link suspension for the running gear of rail vehicles having high balance quality which is suitable for high travel speeds and high axial travel masses. The spring bolts (3) and/or chain links (1) have different diameters in their support areas. As far as possible the dimensions of the UIC replacement parts are adopted for the upper support area of the chain link (1), the upper chain-link block (4) and the upper spring bolt (3). The diameter of the lower support area including chain-link block (5) and/or the diameter of the lower spring bolt (3) are increased to such an extent that the transverse and longitudinal damping values required for high travel speed and large axial travel masses are achieved. The support area of the chain-link block (4, 5) is provided with a depression or the support area of the spring bolt (3) is provided with a flattened portion, the said depression or flattened portion contributing to increasing the longitudinal damping. In order to increase the transverse spring constant of the wheel set guidance, the chain links (1) can be arranged spread out apart from one another in the transverse direction of the wagon. The chain-link suspension according to the invention is provided for the running gear of rail vehicles and is particularly suitable for retrofitting in UIC standard wagons. <IMAGE>

Description

Technical field

The invention relates to a spring clamp suspension for suspension of leaf support springs on rolling stock, in particular for retrofitting to UIC standard wagons.

BACKGROUND OF THE INVENTION BACKGROUND OF THE INVENTION 1 DD 119 752 are known yoke linkages in which the desired improvement in driving quality (running mark), while simultaneously increasing speed and axle transport weight, is achieved by increasing the reciprocating torque of the wheelset by reducing the distance between the springs of the leaf springs is as close as possible to the smallest, as far as possible construction, or the required degree of travel technique.

However, this known embodiment has the disadvantage that with the increase of the wheelset's reversing moments in the longitudinal direction of the wagon, the possibility of its radial adjustment is inevitably more difficult and consequently great wear on the wheelsets and on the track equipment occurs in track arches.

It is further known that the above object can be achieved by increasing transverse damping of the wheelset guidance. According to DD 280 508, a cavity is therefore formed between the caliper and the caliper, while in the less known caliper arrangement of DD 296 253, the cavity is in the bearing surface between the caliper and the caliper while increasing the diameter of the caliper mounting and the additional placement of the damping spring. which increases transverse and longitudinal damping.

The known design according to DD 280 508 has the disadvantage that the desired driving speeds are not achieved when the cavity is formed in the bearing surface between the caliper and the caliper and when these parts are used in standard UIC dimensions. With the known horizontal damping on bogies according to DD 296 253, it is a disadvantage that these devices are not usable in the UIC parameters of vehicles with very limited space in their installation.

The generally known connections of leaf spring pins with caliper stones by known springs mounted on the outside of the pins have the disadvantage that unfavorable abrasion surfaces are formed between the spring bracket bearing and the caliper stone.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a spring suspension for vehicle bogies which permits high driving speeds even at. high axle transport weights, at the same time it guarantees a high quality of travel (mark of running), it can be integrated into a given UIC parameters of heavily restricted vehicles, mounting space and, moreover, little wear.

SUMMARY OF THE INVENTION

This object is achieved by the spring bracket for the bogies of the rolling stock according to the invention, which is characterized in that the brackets on their bearing surfaces and / or the bolts of the bracket springs have different radii, preferably with chamfers.

In order to fit the new yoke, in the maximum diameter of the lower bearing area, adhered to UIC vehicle parameters limited it is expedient for the upper bearing area of the yoke and take over the UIC dimensions including space, for the upper measure the upper pin springs of replacement parts, yoke and / or diameter the lower pivot of the leaf springs should be increased and preferably fitted with a chamfer so that the desired transverse and longitudinal damping values are achieved at high driving speeds with high axle carrying weights.

In order to minimize wear, it is expedient to secure the lower pin of the leaf springs in the opening of the spring bracket against the rotation of the screw connection located between the calipers and the bearing area of the caliper or the caliper. leaf spring pin, equipped with a recess, respectively. bevel, to increase longitudinal damping.

According to a further feature of the invention, in the direction of the length of the yoke suspension, it is expedient to spread the yokes together in the transverse direction of the wagon with limited mounting conditions for the spatial placement of the increased bearing surface diameter, including yoke stones, or to increase the transverse stiffness of the wheelset.

For yoke hinges with mounting spaces limited from all sides, eg. With rotating bogies, it is proposed to taper the yokes at their ends and / or taper so that the yoke approaches a rectangular frame with elastic joints at the corners to achieve the necessary caliper diameters in the bearing region of the invention.

In order to relieve the e-elastic joints, according to the invention, the frame posts are connected to each other at least once below or below each other. connecting crossbars placed in two underneath and above the stirrups.

With the yoke hinge according to the invention, high driving quality of the vehicles is achieved even at high axle transport weights even in rail curves. In addition, the new yoke can be easily integrated into the installation space, which is severely limited by the vehicle UIC parameters, and can also be retrofitted in standard UIC wagons.

It is also an object of the present invention to use said novel features in dual yoke hinges.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be explained in more detail by way of example. The images in question show:

- Fig. 1: a cross-section through a yoke according to the invention,

- fig. 2: cross-section through the bevelled pin of the leaf spring,

- fig. 3: cross-section through a stirrup with deepening,

4 shows a section through the yoke according to the invention, with the yokes mutually spaced apart in the transverse direction of the wagon,

- fig. 5: caliper according to the invention with rounded corners and connecting crossbars,

6: a longitudinal section through the yoke according to FIG.

EXAMPLE 1 of the invention

According to FIG. 1, the yoke of the spring comprises the two yokes 1, the upper yoke 4, the lower yoke 5, the eye of the spring 14, the tailstock of the spring 15, the upper and lower bolts 3 and the screw connection 13. 1 in their bearing regions 2 and / or the pins of the yoke suspension springs 3 have different diameters. It has been found that for the upper bearing area 2 (bearing surface) of the caliper 1, as well as for the upper caliper stone 4 and the upper pin of the leaf spring 3, it is expedient to assume the UIC dimensions of the exchangeable parts. The diameter of the lower bearing area 2, including the caliper 5 and / or the diameter of the lower pin of the leaf spring 3, is increased in such a way that the desired transverse and longitudinal damping values are achieved at high driving speeds and large axle carrying weights. In this case, it is advantageous to provide, in order to increase the longitudinal damping in the bearing region 7 of the leaf spring pin 3 according to FIG. 2, the chamfer 9 or the depression area 7 of the caliper stone 5 the depression 8 according to FIG. 3. In this case, the lower pin of the leaf spring 3 is secured against rotation in the bore 6 of the spring taper between the yokes 1 by means of known screw connections 13.

With limited mounting options, it is possible, in order to better accommodate the increased diameters of the recess area 2, including the yoke stones 5 and to increase the transverse spring constant of the wheelset guide, to locate the yokes 1 displaced in the transverse direction of the wagon according to FIG. This displaced arrangement of the yokes 1 ensures that the bearings are prevented from reaching the maximum extent due to the centrifugal track of the axle brackets on the excessive centrifugal force, in particular at high axle forces resulting from driving speeds and high axle transport weights, thereby achieving an improvement. driving quality, in particular transverse and transversal.

For yoke hinges with mounting spaces limited on all sides, the invention assumes that the yokes 1 are beveled and / or tapered at their corners 10. 5 and 6 form a rectangular frame, the corners of which behave almost like a resilient joint, and to relieve these resilient joints, the frame posts 11 are bound to each other by at least one connecting crossbeam 12. The invention also provides a plurality of crossbars which they may be located below and above the stirrups 4, 5.

Claims (5)

PATENT CLAIMS v. A-fl. ,. 1. Spring suspension ppe for rolling stock bogies consisting of yokes, upper and lower yoke, spring eye and spring-bearing bearing, upper and lower leaf springs, as well as a leaf spring peg, characterized in that the shackles (1) in their bearing regions (2) and / or the leaf spring pins (3) of the yoke hinge have different diameters, the upper yoke bearing region (2), the upper yoke (4) and the upper leaf spring pin (3) are formed to the maximum extent with the UIC dimensions of the replacement parts and the diameter of the lower yoke bearing area (2) including the yoke (5) and / or the lower leaf spring pin diameter (3) are larger than the upper bearing areas (2), upper yoke stones (4) and / or upper springs of leaf springs (3). The yoke according to claim 1, characterized in that the yoke bearing area (7) is provided with a recess (8) or the leaf spring pin (3) in the bearing area (7) is provided with a chamfer (9). A yoke suspension, characterized in that the yokes (1) are mutually spaced apart in the transverse direction of the wagon. The yoke according to claim 1 or 3, characterized in that the yokes (1) are bevelled and / or tapered in their corners (10) and connecting crossbars (12) are placed one or more times between the columns of the frame (11). below and above the stirrups (4; 5). The yoke according to claims 1 to 4, characterized in that a screw connection (13) is provided between the yokes (1) on the tailstock bearing of the spring (15) to secure the pivot of the leaf spring (3) against rotation.