RU2562082C1 - Railway vehicle mounted axle brake disc (versions) - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: brake disc comprises hub, rim and circular strap with cylindrical groove made over ID on the rim side connected by tightening elements arranged over concentric circle of their conjugation. Flat ring is fitted between circular strap and rim. In compliance with first version, flat ring acts via round cross-section split ring on the hub taper surface and on the rim cylindrical surface conjugated with said hub. In compliance with second version, flat ring acts via round cross-section split ring on the hub cylindrical surface and on the rim conical surface conjugated with said hub.

EFFECT: simplified design, higher reliability of brake operation.

6 cl, 4 dwg

Description

The invention relates to railway vehicles and relates to brake disc devices mounted on axles of wheelsets.

A brake disk of a railway carriage trolley is known, comprising a crown and a hub connected to each other by means of fastening nodes arranged on a concentric circle of their interface, each of which is a cylindrical roller mounted in the coaxial holes of the crown and the hub, with a one-sided gap relative to the crown from the center disk, while on a cylindrical roller in the area of its location in the hole of the crown is made a one-sided eccentric groove / 1 /.

The disadvantages of the known brake disc are: the difficulty of manufacturing a cylindrical roller, the need to fix it during installation in a strictly oriented position, as well as the decrease in the strength of the cylindrical roller due to an eccentric groove, which can lead to its "cut" during operation of the brake disk.

A known brake disk of a rail transport, comprising a hub and an annular crown connected by elastically conjugated with the holes of the crown and the hub hubs with a longitudinal through cut, and a device for fixing these bushes and crowns on the hub. The axis of the holes are located along the generatrix of the conjugation of the crown with the hub, and the specified device is made in the form of overlays that cover the said holes on both sides, interconnected by means of tightening elements passed through the bushings / 2 /.

The disadvantages of the known brake disc are: rigid fastening of the bolt and lock washer in the pads, which leads to additional efforts to break from thermal expansion when the brake disc is heated during braking, increased heating of the brake disc rim due to insufficient heat removal to the hub through the bushings with longitudinal through cut.

Known brake disc brake device of a railway carriage trolley adopted for a prototype comprising a hub, a crown, interconnected by split bushes and bolted joints grouped in pairs and spaced around the circumference, while the ventilation windows are made partially in the hub, partially in the crown and are located between pairs grouped split bushings and bolted connections / 3 /.

The disadvantages of the known brake disc are: the complexity of manufacturing the mating surfaces of the crown and hub and their connections, the lack of fixation of the split sleeve in a strictly oriented position, which affects the compensation of thermal deformation and balancing of the crown, which reduces the reliability of the brake disk during braking of a railway carriage.

The technical result of the claimed invention is to increase the reliability of the brake disk of the axle of a wheel pair of a railway vehicle due to the simplification of the design of the mating surfaces of the crown, hub and their joints, ensuring normal balancing of the crown with the hub and maintaining balance when the crown expands due to heating during braking.

The specified technical result is achieved by the fact that in the first embodiment, the brake disk of the axle of a pair of wheels of a railway vehicle, comprising a hub, a ring and an annular plate connected by means of pulling elements arranged along a concentric circle, a flat ring is installed between the ring plate and the ring, acting through a split ring O-ring on the conical surface of the hub and on the cylindrical surface of the crown mating with the hub, and in the annular plate a cylindrical groove is made about the inner diameter from the side of the crown.

In the second embodiment, the brake disk of the axle of a wheel pair of a railway vehicle, comprising a hub, a crown and an annular plate connected by means of pulling elements arranged along a concentric circle of their pair, a flat ring is installed between the ring plate and the ring, acting through the split circular ring on the cylindrical surface of the hub and on the conical surface of the crown mating with the hub, and in the annular plate on the inner diameter from the side of the crown, qi lindric groove.

In both cases, it is possible to install between the flat ring and the split circular ring of at least one flat adjusting ring, and the annular plate, flat ring and flat adjusting ring can be made integral, consisting of at least two parts.

The essence of the invention is presented in the following drawings:

- in FIG. 1 is a general view of the brake disc according to the first embodiment;

- in FIG. 2 - fragment A of FIG. 1 - installation of a flat adjusting ring according to the first embodiment;

- in FIG. 3 is a general view of the brake disc according to the second embodiment;

- in FIG. 4 - fragment B of FIG. 3 - installation of a flat adjusting ring according to the second embodiment.

The brake disk according to the first embodiment (Fig. 1) is located on the axis 1 of the wheelset of a railway vehicle (not shown in the drawing) and consists of a hub 2, a crown 3, an annular lining 4 connected by means of tightening elements 5 arranged in a concentric circle. Between the annular plate 4 and the crown 3 a flat ring 6 is installed, acting through a split ring 7 of circular cross section on the conical surface 8 of the hub 2 (Fig. 2) and on the cylindrical surface 9 of the crown 3 mating with the hub. In the ring strip 4 to the inside diameter from the ring 3 is a cylindrical bore 10. Between the flat ring 6 and the split-ring 7 can be installed in at least one plane of the adjusting ring 11.

The brake disk according to the second embodiment (Fig. 3) is located on the axis 1 of the wheelset of a railway vehicle (not shown in the drawing) and consists of a hub 2, a crown 3, an annular lining 4, connected by means of tightening elements 5 arranged in a concentric circle. Between the annular plate 4 and the crown 3 a flat ring 6 is installed, acting through a split ring 7 of circular cross section on the cylindrical surface 12 of the hub 2 (Fig. 4) and on the conical surface 13 of the crown 3 mating with the hub. In the rings th strip 4 to the inside diameter from the ring 3 is a cylindrical bore 10. Between the flat ring 6 and the split-ring 7 can be installed in at least one plane of the adjusting ring 11.

The brake disc axis of the wheelset of a railway vehicle is assembled and operates as follows.

After manufacturing and balancing the crown 3 and the hub 2, they are collected directly on the axis 1 of the wheelset of the railway vehicle.

When the axis 1 of the wheelset of a railway vehicle is rotated, in the first embodiment, the centered position of the crown 3 on the hub 2 under the action of dynamic forces is ensured by the action of a flat ring 6 through a split ring of circular cross section 7 on the conical surface 8 of the hub 2 and being in close contact with mating with the hub 2, the cylindrical surface 9 of the crown 3.

In the second embodiment, the centered position of the crown 3 on the hub 2 under the action of dynamic forces is ensured by the action of a flat ring 6 through a split circular ring 7 on the cylindrical surface 12 of the hub 2 and being in close contact with the conical surface 13 of the crown 3 mating with the hub 2.

When the crown 3 expands due to heating during braking, its centered position with respect to the hub 2 is maintained as a result of the action of the flat ring 6 on the split circular ring 7, which seals the gap formed due to heating between the conical surface 8 of the hub 2 and the cylindrical surface 9 of the crown mating with the hub 2 3 according to the first embodiment and sealing the gap formed due to heating between the cylindrical surface 12 of the hub 2 and the conical surface 13 of the crown 3 mating with the hub 2 mu embodiment.

When cooling the crown 3, the split circular ring 7 returns to its original state due to a decrease in the gap between the conjugate radial surfaces of the crown 3 and the hub 2, acting on the flat ring 6, for the axial compliance of which in the ring plate 4, a cylindrical groove is made along the inner diameter from the side of the crown 3 8.

The installation of one or more flat adjusting rings 11 between the flat ring 6 and the split circular ring 7 increases the force acting from the flat ring 6 on the split circular ring 7 in tight contact with the mating radial surfaces of the crown 3 and hub 2 in both versions, centering the crown 3 relative to the hub 2 and increasing the balance of the brake disc.

To simplify the installation and adjustments that increase the balance of the brake disc in operation, the annular lining 4, the flat ring 6 and the flat adjusting ring 11 in both versions can be made integral, consisting of at least two parts.

Thus, in the proposed brake disk of the axle of a wheelset of a railway vehicle, the design of the mating surfaces of the crown, hub and their joints is simplified, providing a centered position of the crown relative to the hub, normal balancing of the crown is maintained under the action of dynamic forces and when the crown expands due to heating during braking and, therefore , increases the reliability and safety of the brake disc in operation.

Information sources

1. SU, ed. testimonial. No. 1625750 A1, IPC B61H 5/00, publ. 02/07/91.

2. RU, utility model No. 7650 U1, IPC B61H 5/00, publ. 09/16/98.

3. RU, patent No. 125152 U1, IPC B61H 5/00, publ. 02/27/13.

Claims (6)

1. The brake disk of the axle of a pair of wheels of a railway vehicle, comprising a hub, a ring and an annular lining connected by means of pulling elements arranged along a concentric circle of their mating, characterized in that a flat ring is installed between the annular lining and the rim, acting through a split circular ring on the conical surface of the hub and on the cylindrical surface of the crown mating with the hub, and in the annular plate on the inner diameter from the side of the crown and the cylindrical groove. 2. The brake disc of the axis of the wheelset of a railway vehicle according to claim 1, characterized in that at least one flat adjusting ring is installed between the flat ring and the split circular ring. 3. The brake disc axis of the wheelset of the trolley of a railway vehicle according to paragraphs. 1 and 2, characterized in that the annular plate, a flat ring and a flat adjusting ring are made integral, consisting of at least two parts. 4. The brake disk of the axle of a wheel pair of a railway vehicle, comprising a hub, a ring and an annular lining connected by means of pulling elements arranged along a concentric circle of their mating, characterized in that a flat ring is installed between the annular lining and the rim, acting through a split circular ring on the cylindrical surface of the hub and on the conical surface of the crown mating with the hub, and in the annular plate on the inner diameter from the side of the crown and the cylindrical groove. 5. The brake disc of the axle of the wheelset of the railway vehicle trolley according to claim 4, characterized in that at least one flat adjusting ring is installed between the flat ring and the split circular ring. 6. The brake disc axis of the wheelset of the trolley of a railway vehicle according to paragraphs. 4 and 5, characterized in that the annular plate, a flat ring and a flat adjusting ring are made integral, consisting of at least two parts.

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