SK5196Y1 - Two-axle bogies for rail vehicle with radial settings coupled wheels by cross member - Google Patents

Abstract

Two-axle bogie for trailing railway vehicle with radially adjustable wheelsets with cross coupling, which consists of 2 crossed draw rods and which diagonally connects both wheelsets of one bogie, contains L-shaped dimensional adapters (3), which are connected by two crossed draw rods (4) and (7), and which are firmly connected to the axle box (1) through an axle box carrier (2), whereby dimensional adapter arms (3) do not lie in one plane and therefore dimensional adapter (3) contains at least one more bend, through which its connecting points to the axle box carrier (2) and draw rod (4) and/or (7) will get into the required position.

Description

Technical field

The technical solution concerns rolling stock.

Background Art

In order to reduce the force effects and wear in the wheel-rail contact, the loosening of the link between the chassis frame and the wheelset (in the next release of the wheelset) is promoted in the area of the rolling stock in order to create conditions for radial adjustment of the wheelset when passing through the arc. In addition to meeting the requirements for dynamic performance, its application to rail vehicles must also meet the requirements for simple, trouble-free maintenance, inspection, replacement and adjustment.

The radial adjustment of the wheelsets for passing through the arc can be achieved by using such a suspension in the wheelset guide which is sufficiently flexible in the longitudinal direction (parallel to the direction of travel of the rolling stock). The forces arising between the wheel and the rail when passing through the arc ensure the wheelsets are automatically adjusted to a position near the optimum position. This is characterized in that there is minimal or even no slippage between the wheel and the rail.

For example, with the released wheelset, e.g. Y25 Lsod chassis, one of the UIC standardized chassis.

Such a design tends to impair vehicle stability and, without additional measures, leads to a reduction in the speed at which stability is lost. This phenomenon is undesirable or dangerous, and therefore additional measures are needed to ensure a stable vehicle ride at a speed safely above the designed vehicle speed.

This chassis is not equipped with any stability device (Fig. 1).

It is known to improve the arc control and stability characteristics of the biaxial chassis, which is based on the diagonal connection of the two-axle chassis by a drawbar - the so-called. cross anchor.

For example, the following applications of a diagonal connection of two-axle bogie wheels are known:

1. Tzv. Scheffel chassis (Fig. 2), named after its inventor Herbert Scheffel, protected by USP 4067261, WO000 / 030914.

In this type of chassis, the two wheelsets are connected so that the radial adjustment of the previous wheelset is transmitted to the next wheelset. This is achieved by interconnecting the wheelsets with a cross anchor, which diagonally connects the drawbar of the two-axle bogie to produce an automatic guidance and ride stabilization effect. The railway vehicle itself consists of two bogies and a superstructure mounted on two bogies.

Typically, such a chassis has 2 U-shaped subframes, indicated as 5 and 6 in the figure, which are connected to the chassis bearing housing 7. The subframes are interconnected by a cross arm 9, which lies substantially in the chassis diagonals. The cross anchors 9 are connected to the U-shaped sub-frames 5 and 6 in anchoring points 10, which lie substantially in the plane of the wheelset axis 3a and 3b. Cross anchors 9 are also located approximately in the same plane.

2. Other configurations include USP 6910426. According to this solution, shown in Figure 3, the chassis includes 2 pairs of C-shaped control arms, indicated by numbers 5 and 6 in the figure. Two pairs of C-shaped control arms are diagonally connected to each other by a cross anchor 9. Cross anchor is connected to the control arms 5 and 6 by means of pins in the anchoring points 10.

3. Also known is the suggestion of using a diagonal bond between the wheelsets by means of a cross anchor in the LEILA chassis structure. This is an experimental chassis - a prototype that does not yet have a serial application (Fig. 4). Unlike the previous solutions, the bearing housing is mounted on the inside of the wheels.

The essence of the technical solution

The technical solution of a two-axle bogie for a towed railway vehicle with radially adjustable twin-wheeled wheelsets, consisting of 2 crossbars, diagonally joining both wheelsets of one bogie, is that the ends of the drawbars are provided with L-shaped shaped adapters connected to the bearing housing by a carrier the bearing housing, wherein the L-shaped shape adapter is implemented in the right and left variants and includes at the beginning of the free arm an eye to which the pull rod is attached and the other arm of which is attached to the bearing housing by screwing, welding, or as one an integral part comprising a bearing housing, a bearing housing support and an L-shaped shaped adapter. The two crossed rods are the same, but one of them has a rectangular opening in the center, extending beyond the dimensions of the rod.

SK 5196 Υ1

The essence of the technical solution is also a bearing box support, which is an integral part of the bearing housing, either by welding, screwing or from one piece.

Furthermore, the essence of the invention is the fact that the L-shaped shaped adapter is fixedly fixed to one bearing housing by one arm, which has one or more mutually interconnected surfaces for connection to the shaped adapter, each L-shaped adapter adapting the wheel from the inner side to avoid the brake blocks. The L-shaped shape adapter arms are not flush, and therefore the L-shaped shape adapter includes at least one further bend through which its attachment points to the bearing housing support and the crossbars are brought to the desired position.

The L-shaped shape adapter is made by welding, forging, bending or casting or a combination thereof.

The cross armature according to this solution lies below the plane formed by the axles of the wheel set of the undercarriage and thus bypasses the supporting structure of the chassis frame.

BRIEF DESCRIPTION OF THE DRAWINGS

The figures show known chassis solutions without or using a cross anchor and a solution according to this utility model. FIG. 1, the Y25 Lsod chassis is one of the standard UIC chassis and is not equipped with any stability enhancing device. FIG. 2 is called. Scheffel cross-arm chassis, where the radial adjustment of the previous wheelset is transferred to the next wheelset. FIG. Figure 3 shows another type of cross armature, namely the LHB chassis, developed in Northern Europe. Fig. 4 shows a diagonal bond between the wheelsets in the LEILA chassis (experimental chassis, prototype). The technical solution according to this utility model in the chassis of the Y25 series is made in 2 variants shown in FIG. 5 and 6. 7 is an example of an L-shaped shape adapter.

An example of a technical solution

Example 1

The present technical solution was applied to the Y25 series chassis (Fig. 5). The shape adapter 3 has an L-shape, the free arm of which comprises an eye 5 to which a pull rod 4 is attached and a second leg is attached to a bearing housing 2. The bearing housing 2 is an integral part of the bearing housing 1. The bearing housing carrier 2 is welded to the bearing housing 1. Alternatively, it may be fixed by screwing or the carrier 2 is part of the bearing housing 1 as a casting. The base of the shaped adapter 3 is fixedly connected to the bearing housing 2 by screwing. Alternatively, the connection may be provided by a pin or as a casting, whereby the housing 1 as a whole will also include a bearing housing 2 as well as a shape adapter 3. The shape adapter 3 must be implemented in the right and left versions. Alternative bearing housing 1 as one piece in right and left design. The shape adapter 3 according to the present example comprises an eye 5 on a free arm into which a pin 4 and 7 is attached by a pin. The eye 5 of the shaped adapter 3 lies in a plane below the bearing surface of the spring 6 of the bearing housing 1. The puller 7 is of rectangular design. a hole 4 without a hole, as shown in the figure. The rectangular opening of the pull rod 4 ensures the crossing of the two pull rods without interference. At both ends of the rods 4 and 7 there are spherical joints providing a rotatable connection with the molded adapter 3, alternatively with the bearing housing 1 as a whole. Alternatively, instead of a spherical pin, rubber-metal pins or sleeves may be used to provide the necessary freedom of movement in conjunction with the molded adapter 3 and / or the adapter. with bearing housing 1 as a whole.

Example 2

The present invention was applied similarly to Example 1 to the Y25 series chassis (Fig. 6).

The L-shaped shaped adapter 3 connects to the bearing housing 2, the shorter arm, the base, the shaped adapter, which, together with its longer free arm, form the L-shape, forms the eye 5 to which the tie 4 is attached. an integral part of the bearing housing 1. Attachment of the bearing housing 2 to the bearing housing 1 is realized by welding. Alternatively, it may be provided by screwing or the bearing housing 2 is part of the bearing housing 1 as a casting. The adapter adapter arm 3 is rigidly connected to the bearing housing support 2 by screwing. Alternatively, the connection may be provided by a pin or as a casting, whereby the bearing housing 1 as a whole will also include a bearing housing 2 as well as a shape adapter 3. The embodiment of the L-shaped shaped adapter 3 must be implemented in the right and left variant. An alternative bearing housing 1 as one piece is in pre3

SK 5196 Υ1 lines right and left. The shape adapter 3 comprises an eye 5 into which a tie rod 4 and 7 is attached. The eye 5 of the shaped adapter 3 lies in a plane below the bearing surface of the spring 6 of the bearing housing 1. The handle 7 is designed with a rectangular opening and the drawbar 4 without a hole as is seen from the picture. The rectangular opening of the puller 7 ensures the crossing of the two drawers without interference. At both ends of the pull rod 4 and 7 there are spherical joints providing a pivoting connection with the molded adapter 3, alternatively with the bearing housing 1 as a whole. Alternatively, instead of a spherical pin, rubber-metal pins or sleeves may be used to provide the necessary freedom of movement in conjunction with the molded adapter 3 and / or the adapter. with bearing housing 1 as a whole.

Claims (7)

1. A two-axle bogie for a towed railway vehicle with a radially adjustable cross-wheeled two-wheel set consisting of 2 crossed drawbars diagonally connecting the two wheelsets of one bogie, characterized in that the ends of the crossed drawbars (4) and (7) are fitted with 3) L-shaped, connected to the bearing housing (1) by means of a bearing housing carrier (2). Two-axle bogie according to claim 1, characterized in that the L-shaped form adapter (3) is in the variant right and left and at the beginning of the free arm comprises an eye (5) to which the rod (4) is attached. ) and / or (7) and the second arm of which is connected to the bearing housing (2) by screwing, welding, or as an integral part comprising a bearing housing (1), bearing housing (2) and a form adapter ( 3). A two-axle bogie according to claims 1 and 2, characterized in that the 2 crossed drawbars (4) and (7) are the same, but the drawbeam (7) comprises a rectangular opening (8) in the center exceeding the drawbeam dimensions. Two-axle bogie for a towed railway vehicle according to claims 1 to 3, characterized in that the bearing box support (2) is an integral part of the bearing box (1), either by welding, screwing or in one piece. A two-axle bogie for a towed rail vehicle according to claim 1, characterized in that the L-shaped form adapter (3) is fixedly fixed by one arm to the bearing box support (2) having a connection formed with the form adapter (3). one or more interconnected surfaces, each shape adapter (3) bypassing the wheel from the inside to avoid the brake blocks. Two-axle bogie according to claim 5, characterized in that the arms of the L-shaped adapter (3) do not lie in one plane and therefore the L-shaped adapter (3) comprises at least one further bend by means of which its attachment points to the bearing box carrier (2) and the rod (4) and / or (7) are brought to the desired position. Two-axle bogie according to claim 1, characterized in that the L-shaped form adapter (3) is produced by welding, forging, bending or casting or a combination thereof.