RU2245809C1 - Locomotive wheelset drive - Google Patents

Abstract

FIELD: railway transport.

SUBSTANCE: invention can be used in drives to transmit torque from motor to wheelset of locomotive. Proposed drive contains electric motor 1 with drive gear 2 on shaft, and driven gear 3 installed on bearings 4 on hollow support 5 of electric motor. Hollow shaft 6 encloses axle of wheelset, being engaged with wheelset and with driven gear by means of four-link mechanisms arranged at its ends. Said four-link mechanism consists of stops 7 and braces consisting of self-aligning resilient members 8.

EFFECT: reduced dynamic loads in drive.

5 dwg

Description

The invention relates to the field of railway transport. It can be used in the design of locomotives to transmit torque from an electric motor to a wheelset.

A drive wheel of a locomotive is known, comprising a drive gear located on an electric motor shaft, a driven gear connected to the wheel pair by means of a transmission mechanism, and elastic elements located between the crown and the hub of the driving or driven gear [1], [2], [3] , [5].

The disadvantage of these drives is that when using brushless motors with large torque pulsations, strong dynamic loads occur in the drive, since the absorption capacity of the elastic elements is insufficient due to the fact that it is impossible to place elements with a large absorption capacity.

A drive of a locomotive’s wheel pair, which is closer in technical essence, is known, comprising a pinion gear located on an electric motor shaft, a pinion gear mounted with bearings on an electric motor hollow support, a hollow shaft articulated to the wheel pair by means of four link mechanisms consisting of fingers and leads with hinges located on both sides of the wheelset [4].

The disadvantage of this drive is that it does not absorb torque pulsations, which leads to high dynamic loads in the drive.

The aim of the invention is to reduce dynamic loads in the drive. This is achieved by the fact that in a locomotive’s wheel drive containing a pinion gear located on an electric motor shaft, a driven gear mounted by bearings on a hollow support, and a hollow shaft articulated with a pair of wheels using four-link mechanisms located on both sides of the wheelset , bonds of four-link mechanisms are made in the form of spores consisting of self-centering elastic elements.

The invention is illustrated by the drawing, in which Fig. 1 shows a general view of the drive, in Fig. 2 is a section along aa (Fig. 1), in Fig. 3 is an arrangement of self-centering elastic elements in struts, in Figs. 4 and 5 are drive variants using a six-link and eight-link mechanism.

The drive includes an electric motor 1, on the shaft of which there is a driving gear 2, coupled to the driven gear 3, which with bearings 4 is located on the hollow support 5 located on the body of the electric motor 1. The hollow shaft 6 is suspended concentrically at one end to the driven gear 3 by four-link mechanism, consisting of stops 7 and self-centering elastic elements 8, and the other end to the wheel of the pair of wheels 9 through a similar four-link mechanism.

The torque from the electric motor 1 is transmitted to the driven gear 3 through the drive gear 2, and from it through the spacers of the four-link mechanism to the hollow shaft 6. The hollow shaft 6 transmits torque through the spacers of the four-link mechanism located on the opposite end of the hollow shaft to the wheel pair. Since the wheels of the wheelset 9 are rigidly connected to its axis, torque is transmitted to both wheels. The moment pulsation is absorbed by self-centering elastic elements working on shear and compression. Since the transverse stiffness of the elastic self-centering elements in the transverse direction is much higher than in the axial direction, the spacers do not lose the stability of the loads, while at the same time providing compensation for the transverse, axial and angular displacements of the wheel pair relative to the electric motor.

Drive variants are possible in which, in order to increase the bearing capacity of the struts, instead of a four-link mechanism, a six-link mechanism (Fig. 4), an eight-link mechanism (Fig. 5) or a mechanism with more than eight links, similar to those shown in Figs. 2, 4, 5.

The advantage of the drive is the ability to widely vary the stiffness and damping ability of the elastic elements, which allows to reduce dynamic loads. This is done by changing the number of sizes and shapes of self-centering elastic elements, as well as by changing the number of links in the mechanisms connecting the hollow shaft with the driven gear and the wheelset.

List of references

1. M. Zyuberkryub. Traction drive of locomotives. Goszheldorizdat, 1933

2. Auth. testimonial. USSR No. 243731, IPC В 61 С dated 27.2.1968

3. Auth. testimonial. USSR No. 249415, IPC В 61 С dated September 8, 1976

4. Auth. testimonial. USSR No. 265929, IPC B 61 C dated 12/26/1967 (prototype).

5. I.V. Biryukov, A.I. Belyaev, E.K. Rybnikov. Traction gears of electric rolling stock of railways. - M .: Transport, 1986. - 256 p.

Claims (1)

A locomotive wheel pair drive comprising a pinion gear located on an electric motor shaft, a pinion gear mounted with bearings on a hollow motor support, a hollow shaft spanning an axle of the pair of wheels and articulated with it and with a pinion gear by four link mechanisms located at the ends of the hollow shaft , characterized in that the four-link mechanism consists of stops and ties made in the form of struts, consisting of self-centering elastic elements.

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