RU2375203C1 - Profile of railroad vehicle wheel bearing disk flange - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: proposed wheel comprises bearing disk and hub running in bearings fitted on axle, rim fitted on the hub with the help of elastic gasket. Note that the gap between rim and hub seat surfaces is shaped. All along bearing disk perimetre, a flange is made with its side surface in contact with railhead. Surface in contact with railhead and switchblade is defined by curvilinear generating line with its camber directed towards railhead.

EFFECT: higher safety, longer life and reduced resistance.

2 dwg

Description

The invention relates to rail transport, ranging from railway rolling stock to bridge cranes and monorails.

Known wheels of rail vehicles containing elastic elements that dampen vibrations caused by movement along the rail track, for example, "The elastic wheel of a rail vehicle" according to USSR copyright certificate No. 1775319, MKI 7 V60V 9/12. For the prototype, based on the greatest coincidence, the “Wheel of a rail vehicle” was adopted according to the author's certificate of the Russian Federation No. 2207250, the design of which has a thrust disk, along the perimeter of which there is a ridge, hub, elastic element, bearings, sprung brace, independently rotating relative to the thrust disk and the wheel axis couples.

The disadvantage of these solutions is the presence of a rectilinear generatrix of the lateral surface of the ridge of the thrust disc in contact with the rail head. This is the reason for the insufficient safety level of the wheelset wheels movement.

The purpose of the invention is to increase traffic safety and comfort within the crew, to increase the resource of the thrust disc and reduce the resistance to movement of the wheelset wheelset.

The essence of the invention lies in the fact that this goal is achieved by replacing the rectilinear generatrix of the lateral surface of the ridge of the thrust disk in contact with the lateral surface of the rail head by a curvilinear generatrix (for example, parabolic), convex directed towards the rail head.

Figure 1 shows the design of the wheel of a rail vehicle. Figure 2 on an enlarged scale shows the profiles forming the lateral surface of the ridge 9 of the thrust disk 2 in contact with the rail head 10.

Figure 1 shows that the design of the wheel consists of a thrust disk 2 and a hub 5, independently rotating relative to each other. The thrust disk 2 is rigidly mounted on the axis 1, which has the ability to rotate in the axle box bearings 8. A ridge 9 is formed along the perimeter of the thrust disk 2. The hub 5 is mounted on the axle of the wheel pair 1 by means of the bearing 7. .

The lateral surface of the ridge 9 is defined by a curvilinear generatrix convex directed towards the rail head 10. The lateral surface of the ridge can be divided into two zones: a surface section in the spacecraft zone contacts with the upper part of the lateral surface of the rail head during the passage of curved sections of the track; the second section of the lateral surface in the NE zone is in contact with the wit of the railroad rail gauge. In both of these cases, a horizontal transverse guiding force acts on the crest.

A comb with a curved outline of the side surface works as follows. During the passage of the curved sections of the path by a wheel with a sprung bandage, the lateral surface of the ridge 9 is in contact with the head of the rail 10 in the spacecraft section and perceives a horizontal-transverse guiding force. In this section, the angle (γ) of the slope of the tangent to the generatrix of the lateral surface at the point of contact is the least. Therefore, the vertical component of the guiding force is minimal and significantly less than the vertical load of the wheel. With this ratio of vertical forces, the likelihood of rolling the wheel flange onto the rail is significantly reduced.

When inscribing a pair of wheels with sprung bandages in the turnout of the rail track, the point of contact between the crest and the wit is at the bottom of the section of the generatrix (CB) of the side surface of the ridge 9. In this section, the value of the angle (γ) of the tangent angle at the point of contact of the ridge and the wit is greater than on the upper section (KA) and compared with the angle of inclination of the rectilinear generatrix (segment AB). Therefore, the value of the angle γ at the point of contact between the comb and the wit is quite sufficient for reliable "capture" of the guide surface of the wit of the switch by the lateral surface of the comb. As the wheel moves in the longitudinal direction, the guide lateral surface of the pin increases in height and the point of contact of the ridge and the pin moves up into the zone of a smaller angle γ.

The technical result is an increase in the resource of the thrust disk, traffic safety, comfort inside the crew.

Improving traffic safety and comfort within the crew is ensured by giving a convex curved configuration to the generatrix of the lateral surface of the ridge of the thrust disc in contact with the rail head.

Claims (1)

A wheel of a rail vehicle containing a thrust disk and a hub that is mounted on an axis by bearings, a bandage fixed to the hub with an elastic layer, the space between the seating surfaces of the bandage and the hub is shaped, a ridge is formed around the perimeter of the thrust disc, which contacts the side surface with a rail head, characterized in that, in order to increase the resource of the thrust disc, the safety of movement of the wheel with a sprung bandage, the lateral surface of the ridge hard disk, in contact with the head of the rail and a tongue rail track turnout, given curvilinear generatrix which the convexity is directed towards the rail head.

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