RU210510U1 - Two-axle railway bogie - Google Patents

Abstract

The utility model relates to a special railway rolling stock and concerns two-axle bogies of track machines, which are intended for maintenance, maintenance and repair of railway transport structures and devices. In a two-axle railway bogie, one of the side frames is rigidly connected to the pivot beam, and the other side frame is rigidly connected to the side cross beam, while the free ends of the pivot and side cross beams are pivotally connected to the adjacent side frame. 2 w.p. f-ly.

Description

The utility model relates to a special railway rolling stock and concerns two-axle bogies of track machines, which are intended for maintenance, maintenance and repair of railway transport structures and devices.

From the description of the utility model to the patent RU No. 133486, class. B61F 3/02, publ. 10/20/2013, a two-axle bogie of a railway freight car is known, containing two sidewalls with axlebox openings, a bolster, a central thrust bearing, side bearings, wheelsets with axlebox assemblies on bearings, brake equipment and spring suspension, in which the sidewalls are hinged to each other by means of cross beams.

Thanks to the hinged transverse connection of the sidewalls, in the known bogie, an increase in the smoothness of the ride and a decrease in its impact on the path are ensured. However, the presence of transverse beams under the bolster excludes the use of this technical solution in the design of motor bogies due to the impossibility of assembling the drive with an axial gearbox.

From the “Technical description and operating instructions for the MPD motor platform”, Moscow, ed. "Transport", 1976, p. 21-32, fig. 18, a two-axle railway bogie is known, including a frame consisting of two sidewalls, a pivot and side cross beams, wheelsets, which are kinematically connected to the drive through axle gearboxes, axle boxes with spring suspension and brake equipment. This technical solution was chosen as a prototype for the largest number of common features with the proposed one.

The disadvantages of the prototype include the inconsistency of its technical characteristics with the new requirements for modern rolling stock bogies, such as, for example, an increase in axial load, a decrease in the impact on the track, an increase in overhaul runs, etc.

The technical task of the proposed device is the creation of a two-axle bogie of a special railway rolling stock with an axial load of 245 kN, reduced impact on the track, increased overhaul runs by reducing the wear of the flanges of the wheel sets when passing curved sections of the track.

This is achieved due to the fact that in a two-axle railway bogie, which includes a frame consisting of two sidewalls, a pivot and side cross beams, wheelsets, which are kinematically connected to the drive through axle gearboxes, axle boxes with spring suspension and brake equipment, in contrast to prototype, one of the sidewalls is rigidly connected to the pivot beam, and the other sidewall is rigidly connected to the side transverse beam, while the free ends of the pivot and side transverse beams are pivotally connected to the adjacent sidewall. In addition, the free end of the pivot beam passes through the opening in the adjacent side frame and rests on it through a spherical bearing, and the free end of the side cross beam is connected to the adjacent side frame also by means of a spherical bearing.

This embodiment of the proposed device allows to reduce its impact on the track, to increase the overhaul runs by reducing the wear of the ridges of the wheel pairs when passing curved sections of the track.

The claimed technical solution is illustrated by drawings, where:

- in Fig. 1 shows a side view of the cart;

- in Fig. 2 shows a top view of the trolley;

- in Fig. 3 shows an isometric view of the side frame with the pivot beam;

- in Fig. 4 is an isometric view of a side frame with a side cross member;

- in Fig. 5 shows a section along A-A in Fig. 2;

- in Fig. 6 shows a section along B-B in Fig. 2;

- in Fig. 7 shows a section along B-B in Fig. 2.

Biaxial railway bogie contains a frame consisting of two sidewalls 1 and 2, pivot 3 and side 4 cross beams. Wheel pairs 5 are kinematically connected to drive 7 through axle reduction gears 6.

Between the guides 8 of the sidewalls 1 and 2, axleboxes 9 are located, on the bodies of which the sidewalls 1 and 2 are supported through the spring suspension 10 with friction dampers. The brake equipment of the bogie is made in the form of brake cylinders 11 fixed on the sidewalls 1 and 2, which transmit the brake pressure to the pads 12 through the brake linkage 13. The brake cylinders 11 are made with built-in automatic parking brakes. Side elastic side bearings 14 are installed on the pivot beam 3 and a thrust bearing assembly 15 is located. The inseparability of the connection is ensured by the king pin 19.

The side frame 1 is rigidly connected to the pivot beam 3, and the side frame 2 is rigidly connected to the side cross beam 4.

The free end of the pivot beam 3 is located in the opening 20 of the side frame 2 and rests on it through a spherical bearing 21.

The free end of the side transverse beam 4 is connected to the side frame 1 by means of a spherical bearing 22.

In axleboxes 9 installed tapered double-row bearings 23 cassette type.

The cart works as follows. The load from the weight of the body of the rolling stock unit through the adapter 17 is transferred to the spherical thrust bearing 16 of the sidewall 1 and further, through the thrust spherical bearing 21, to the sidewall 2, through the spring suspension 10 to the wheelset 5. In this case, the movement of the adapter 17 in the thrust bearing 16 occurs along the insert 18 of a composite material, and the mutual movement of the sidewalls 1 and 2 is limited by the hinged bearing 22. In addition, part of the weight of the body of the rolling stock unit is transferred to the side elastic bearings 14.

The mutual movement of the sidewalls 1, 2, combined by means of a thrust spherical bearing 21 and a spherical bearing 22 into a single semi-rigid frame, helps to adapt the wheel sets to the unevenness of the railway track, and also when the bogie passes curved sections of the railway track, it helps to reduce the angles of approach of the wheel sets 5 and, as consequently, reducing the impact on the track, reducing the undercutting of the wheel flanges and increasing their service life. Friction vibration dampers of the spring suspension 10 and side elastic bearings 14 provide damping of vibrations in all modes of movement, both in straight and curved sections of the track, contributing to the improvement of dynamic performance and an increase in the smoothness of the movement of the rolling stock unit. Mounted in axleboxes 9 tapered double-row bearings 23 cassette type have increased load capacity and high operational reliability.

Thus, the proposed design of a two-axle bogie of a special railway rolling stock with an axial load of 245 kN makes it possible to reduce the impact on the track and increase the overhaul runs.

Since the design of this utility model includes existing components and assemblies that have proven their industrial applicability and efficiency, it can be manufactured and used in industry, that is, it satisfies the patentability condition "industrial applicability".

Claims (3)

1. A two-axle railway bogie, including a frame consisting of two sidewalls, a pivot and a side crossbeam, wheelsets, which are kinematically connected to the drive through axle gearboxes, axlebox units with spring suspension and braking equipment, characterized in that one of the sidewalls is rigidly connected with a pivot beam, and the other side frame is rigidly connected to the side cross beam, while the free ends of the pivot and side cross beams are pivotally connected to the adjacent side frame. 2. A two-axle railway bogie according to claim 1, characterized in that the free end of the pivot beam passes through an opening in the adjacent sidewall and rests on it through a spherical bearing. 3. A two-axle railway bogie according to claim 1, characterized in that the free end of the side cross beam is connected to the adjacent side frame by means of a spherical bearing.

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