RU29504U1 - A device for damping linear and torsional vibrations in the suspension of a traction motor with an axial axle suspension - Google Patents

Description

A device for damping linear and torsional vibrations in the iodine of a traction motor with an axial axial axle mount

The proposed utility model relates to the field of vibration protection of traction gears of railway vehicles.

A traction drive of a locomotive 1 is known, in which a traction motor included in the gear is supported on the one hand through the motor-axial plain bearings on the axle of the wheel pair, and on the other hand, on a spring set consisting of four springs located between two beams pulled together by bolts, installed between the legs of the bracket welded to the transverse frame of the vehicle trolley with a preload that eliminates the deformation of the springs from the traction moment, or structurally simpler mounting on a suspension with elastic rubber washers that make up the block of shock absorbers that define the main mechanical chain of vibration protection, providing dynamic damping of vibrations in the vertical movement of the traction motor.

However, in the non-uniform mode of operation of the traction engine — starting, braking, accelerating — angular fluctuations of torsional vibrations and transverse fluctuations of vertical vibrations appear. Their appearance is dangerous in the general oscillatory mechanical system of the vehicle by the appearance of resonance.

This proposal solves the problem of preventing the occurrence of resonance, damping torsional vibrations and transverse vibrational components of vertical movement (Fig. 1 a, b).

The problem is solved by introducing parallel to the main mechanical chain 2, which includes spring sets or a block of rubber shock absorbers, an additional chain 3, containing a non-self-locking screw pair, the movable link of which is a flywheel nut, while ensuring relative mobility of the pair links:

flywheel nuts and guide screw. At the same time, the non-self-braking pair is attached to the engine housing and the frame of the trolley in two ways (Fig. 2 a, b.):

1. The fastening of the flywheel nut to the engine casing 1 is carried out motionless 5, and the screw is fastened to the carriage frame by means of a spherical hinge 4, which provides the screw 6 with three degrees of freedom in rotational motion (Fig. 2 a);

2. The screw is fastened to the frame of the carriage without relative rotation, and the flywheel nut 7 to the engine housing 1 is secured by relative rotation with the implementation of three degrees of freedom in rotational motion (the outer surface of the flywheel nut is made spherical and connected to the inner surface of the glass 8 reciprocal form, fixedly mounted on the engine casing) (Fig.2 b).

In uneven operating modes of the engine, a non-self-braking screw pair has the ability to self-adjust with the absorption of the transverse components of the vertical movement.

The technical result of the implementation of the utility model is the possibility of stabilizing the operation and increasing the service life of the traction drive of the vehicle.

Literature:

1. Biryukov I.V., Savoskin A.N., Burchak G.P. and others. The mechanical part of traction rolling stock: Textbook for universities railway. transp. M .: Transport, 1992.440 s., S. 319-321.

Authors G., x, Khomenko A.P.

Milovanov A.I. Gozbenko V.E. Ermoshenko Yu.V.

Claims (1)

A device for damping linear and torsional vibrations in a suspension of a traction electric motor with an axial-axle suspension, containing means of effective protection against vibrations in the axial-axle suspension system of a locomotive traction engine, such as spring sets consisting of four springs located between two beams and tightened by bolts , or elastic rubber washers, representing a block of shock absorbers, constituting the main mechanical chain of vibration protection, characterized in that it contains additional an additional chain, in the form of a non-self-locking screw pair, the flywheel of which serves as a movable link with the possibility of eliminating angular fluctuations in torsional vibrations and transverse components of the vertical movement of the traction motor, while the connection of the flywheel nut with the motor frame is made with the exception or with the possibility of providing relative motion , the connection of the screw with the frame is made accordingly with the possibility of providing or with the exception of relative motion.