DK150659B - BOGIE FOR QUICK-RUNNING SKIN DRIVERS - Google Patents

Description

150659

BACKGROUND OF THE INVENTION The invention relates to a bogie for fast-moving rail vehicles, the wheelset of which is guided on both sides of the vehicle by means of slat guiding arms, and whose bogie frame is resiliently mounted on the wheelsets through primary springs, while the carriage rests on a cradle arranged across the bogie frame, the ends through a secondary-spring system rest on spring supports which are suspended via pendulum bars in the bogie frame and firmly connected to each other by means of cross-links.

10 In the case of known bogies of this kind, bogie frames consist of two longitudinal carriers connected to each other by means of two cross carriers. Near the ends of the longitudinal drag, there are primary springs on their underside which support the axle bushings of the wheelsets. The axle bushings of the wheel-15 kits are controlled by means of two lumbar control arms, parallel to one another in different height planes, which are at the other end clamped in brackets on the bogie frame. Between the crossbars of the bogie frame there is a cradle at the known bogie, the ends of which extend 20 beyond the longitudinal supports of the bogie frame. In the middle of the cradle is the lower part of the bogie bed or a guide bearing, on which the bearing or side slide pieces the trolley box supports the bogie. On the underside of the ends of the cradle projecting beyond the longitudinal supports of the bogie frame, the cradle is provided with resilient secondary springs, which are supported on each of the longitudinal supports of the bogie, which are sprung suspended in suspension bars in the bogie frame. The springs are firmly connected to each other by means of cross-links.

30 There are rubber-metal elements in the connection points for the slat control arms as well as the shaft bars, which prevent the transfer of driving noise from the wheelsets to the bogie frame. These rubber-metal elements, however, can only be small for constructive reasons, so that complete noise insulation is not achieved. Furthermore, noise from the wheelsets will be transmitted through the primary springs to the bogie frame, so that a fairly high noise level is transmitted to the carriage through the secondary springs which can even amplify these sound vibrations. The noise level leads to limiting the driving comfort of these bogies, which are mainly used for passenger traffic.

It is therefore an object of the invention to provide additional sound insulation between the cradle and bogie frame or between the cradle and the spring racks and thus to reduce the sound vibrations transmitted to the carriage. It is further an object of the invention to shorten the usually secondary springs, which, as a result of their constructively conditioned length, act as resonant tubes, so as to displace the resonant region. Finally, it is intended to increase the transverse stiffness of the coil springs in order to take advantage of the load dependence of the pendulum bars and to reduce the tension in the coil springs.

This is achieved according to the invention in that between the springs and the secondary springs there is an intermediate carrier on which the secondary springs rest, and that the intermediate support rests again through support elements on the spring support, which support elements are designed as downwardly open cup springs with rubber or rubber metal elements.

The invention advantageously avoids the purely metallic connection between the cradle and the spring supports. The secondary springs are shortened and thus their resonance effect changes. The tension in the coil springs is reduced by simultaneously increasing the shuttle path. Advantageously, a damping element is engaged at the intermediate carrier's installation on the spring carrier through the rubber-metal elements. In a further embodiment of the invention 30, the cross-links are arranged on the intermediate supports and firmly interconnect them. With the fixed connection between the intermediate supports, a cross-cutting of the intermediate supports is prevented, and thus the end faces of the coil springs are kept horizontal and parallel, so that the cross-stiffness of the coil springs can be made fully operable. Furthermore, the moments arising from the forces of the vertical cradle dampers can be absorbed.

3 15065

The intermediate supports are preferably connected to the cradle through shock absorbers. In the known embodiments, the shock absorbers were generally positioned between the springs and the cradle, so that a sound transmission could also take place here. Advantageously, this sound transmission is avoided from the frame to the cradle due to the application of shock absorbers according to the invention. In the embodiment according to the invention, the intermediate carrier is arranged horizontally over the spring carrier and parallel to it. Furthermore, the cup-10 spring housing is firmly mounted with the middle carrier. The secondary springs are supported at their lower ends by the cup springs.

In the invention, the transmission of sound oscillations from the wheels to the car crate is substantially reduced.

BRIEF DESCRIPTION OF THE DRAWINGS The invention is explained in more detail below with reference to the drawing, in which: FIG. 1 is a side view of a bogie according to the invention; FIG. 2 the bogie of FIG. 1 is a top view, FIG. 3 is a sectional view taken along line III-III of FIG. 2, and FIG. 4 is a section along line IV-IV of FIG. 2nd

The frame for the bogie shown in the drawing is generally comprised of longitudinal supports 1 and transverse supports 2. On the underside of the ends of the longitudinal supports 1 25 are mounted primary springs 3, through which springs bogie frame 1 and 2 rest on the axle bushings 4 of the wheel set 5. the shaft bushes 4 and the longitudinal supports 1 are furthermore shock absorbers 6. The axle bushings 4 of the wheel sets 5 are clamped 30 by slat guide arms 7 in brackets not shown on the bogie frame 1 and 2. Between the cross supports 2 in the bogie frame there is a cradle 8 across the bogie frame 1 and 2. The cradle 8 protrudes with its ends beyond the longitudinal carriers of the bogie frame 1.

In the middle of the cradle 8 there is a lower part of a bogie bed 35 9 on which the carriage box is mounted.

On the underside of each end of the cradle 8 are secured secondary springs 10 which in this embodiment

Claims (2)

Example 150659 is designed as coil springs. The secondary springs 10 are supported on each end by intermediate supports 11 arranged parallel to the longitudinal supports of the bogie frame 1. The ends of the intermediate supports 11 consist of 5 downwardly open cup springs 12, 13, whose cup 12 is firmly joined to the intermediate supports 11. The cup spring 12, 13 is a rubber-metal spring with tapered rubber-metal elements 13. The rubber-metal elements 13 are supported on the upper side of each of the springs 14 arranged parallel to the intermediate supports 14. The spring supports 14 are extended past the cup springs 11 12, 13 and are suspended at the ends through pendulum rods 15 and rubber metal elements 16 and 17 in the longitudinal supports of the bogie frame 1. Both intermediate supports 11 are interconnected 15 through transverse links 11 placed on the bogie across the bogie. the center with brackets 19 on the intermediate supports 11 placed shock absorbers 20, which in turn are connected to the cradle 8. 20 1. Bogie for fast-moving rail vehicle, the wheelset of which is guided on both sides of the vehicle by means of slat guiding arms, and whose bogie frame is the springs mounted 25 on the wheelsets through primary springs, while the trolley box rests on a cradle placed across the bogie frame, which at the ends through a secondary spring system rests on spring supports which are suspended via pendulum rods in the bogie frame and firmly connected to each other by means of cross-links, characterized in that by the secondary spring system between the spring supports (14) and the secondary springs (10) there is an intermediate carrier (11) the secondary springs (lO) rest and that the intermediate support (11) rests through the support elements (14) again, which support elements are formed as downwardly open cup springs (12, 13) with rubber or rubber metal elements (13).