CZ4580U1 - Bogie frame for rail vehicles - Google Patents

Abstract

A method of adaptation of a swivel bogie frame for railway vehicles having two longitudinal beams (2, 3) a two transverse beams (4, 5) where semicircular consoles for adjusting bearing housings (9) are provided on extremities of said longitudinal beams (2, 3) and where the first transverse beam (4) is firmly attached to the first longitudinal beam (2) and to the second longitudinal beam (3) is attached via a first joint (14); the second transverse beam (5) is attached to the first longitudinal beam (2) via a second joint (15) and to the second longitudinal beam (3) in a fixed manner; said method can be characterised in that said joints (14, 15) are fixed between said transverse beams (4, 5) and longitudinal beams (2, 3) and after the fixation process the semicircular consoles are removed. Then on the extremities of the longitudinal beams (2, 3) welded are low-end open tapered clamp consoles (6) for the bearing housing (9), axle (16) and for primary spring (7) made of layered rubber, as well as for an axle (16) key (8) bearing (10). The joint (14, 15) fixations are thereafter removed.

Description

The technical solution relates to a bogie frame for rail vehicles, with two longitudinal beams and two cross beams. The first transverse beam is rigidly connected to the first longitudinal beam and is connected to the second longitudinal beam by means of the first joint. The second crossbeam is in turn connected to the first longitudinal beam by means of a second hinge and rigidly connected to the second longitudinal beam.

BACKGROUND OF THE INVENTION

Such chassis frames have been known for a long time and have been used for the corresponding time.

CS 87038 discloses a rail-mounted four-wheel bogie with two wheels mounted on the same side in the sidewall. The sidewalls are connected to each other by two crossbars. In this case, each side wall is pivotally connected to one cross member about a vertical axis and articulated to the other cross member. The joints and axes of rotation are diagonally opposite to each other in plan view. This solution is mainly suitable only for low operating speeds, as are commonly used in the transport of self-supporting objects, for which the chassis is also designed according to the invention.

CS 89338 discloses a multi-axle bogie frame which is composed of two T-shaped rigid parts. The two rigid parts are connected to each other by two hinges, each located at the free ends of the cross-member of the rigid part and its longitudinal member.

However, such a chassis frame has a large proportion of unsprung mass and the resulting unfavorable running conditions.

The essence of the technical solution

Based on the knowledge of the prior art, the object of the invention is to reduce the unsprung mass and improve the running conditions of the chassis frame mentioned above. At the same time, this solution must be easy to apply to the chassis frames of the type referred to above.

This task is fully accomplished by welding the open trapezoidal bearing brackets at the ends of the longitudinal beams for the axle bearing cover, the primary laminated rubber suspension and the axle key bearing.

For applying the technical solution to the chassis frames used hitherto, it is important that the joints between the cross members and the longitudinal members are fixed. Although this fixation is removed prior to the running of the chassis frame, it is advantageous during conversion, since the bearing cover and the primary spring can be installed in the correct position relative to each other at a defined position of the crossbeam and longitudinal beam.

-1GB 4580 U1

Overview of the drawings

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of the bogie according to the present invention; and FIG. 2 is a plan view of the bogie of FIG. 1.

Examples of technical solution

The chassis 1 of Figures 1 and 2 is formed by a frame consisting of two longitudinal beams 2 and 3 and two transverse beams 4 and 5, the first transverse beam 4 being rigidly connected to the first longitudinal beam 2 and articulated by the first the joint 14 with the second longitudinal beam 2 and the second transverse beam 5 is articulated on the reverse side by a second joint 15 to the first longitudinal beam 2 and is rigidly connected to the second longitudinal beam 3. At the ends of the longitudinal beams 2 and 3 trapezoidal bearing brackets 6 in which the axle bearing cover 9 with wheels 17 is located, wherein a primary laminated rubber spring 7 is disposed between the bearing cover 9 and the bearing bracket 6. At the lower end of the stowage bracket 6 is located a bearing 10 for an axle key 8. Further, vertically effective compression springs 11 are located between the bearing cover 9 and the mounting bracket 6. The bogie 1 is further provided with a magnetic brake 12 with a stop 13.

Especially when converting existing bogies to bogies 1 according to this technical solution, the joints 14 and 15 are temporarily fixed during the conversion, for example sheets.

Claims (2)

A bogie frame for rail vehicles, with two longitudinal beams (2, 3) and two cross beams (4, 5), the first cross beam (4) being rigidly connected to the first longitudinal beam (2) and the second longitudinal beam (3). ) is connected by means of a first joint (14) and the second transverse beam (5) is in turn connected to the first longitudinal beam (2) by a second joint (15) and fixed to the second longitudinal beam (3), characterized in that The beams (2, 3) are welded down the open trapezoidal bearing brackets (6) for the axle bearing cover (9), the laminated rubber primary spring (7) and the axle spanner bearing (10). Chassis frame according to claim 1, characterized in that the joints (14, 15) are fixed between the cross members (4, 5) and the longitudinal members (2, 3).