UA84797U - Method for modernization of wheel-motor unit of railway locomotive - Google Patents

Abstract

A method for modernization of a wheel-motor unit of a railway locomotive, which consists of a traction motor with motor-axial plain bearings, a wheel pair, which consists of wheel centers with treads and axle, one or two traction gear boxes, one or two gears and two boxes including dismantling body of a traction gear box or two traction gear boxes, a traction motor with motor-axial plain bearings, axle boxes, compaction of wheel centers and one or two gears of axle, restoration or repair, or replacement of the body of traction gear box, wheel centers, gears, axle boxes and assembly of wheel-motor unit, moreover, after dismantling the traction motor with motor-axial sliding bearings is modernized by removing the motor-axial sliding bearings and welding to the body of traction motor of beams for fasteners of the body of motor and axial rolling bearings followed by replacement of the axle of wheel pair with motor and axial sliding bearings on the axle of wheel pair with motor axial rolling bearings, on which the body is put, in which motor and axial rolling bearings are mounted, in the case of removal of the wheel-motor unit the modernized traction electric motor is connected to the body of motor and axial rolling bearings.

Description

The utility model belongs to railway transport, namely to wheel-motor units for traction rolling stock of railway transport and concerns the method of modernization of wheel-motor units of mainline and shunting locomotives with motor-axle sliding bearings for the purpose of using motor-axle rolling bearings in them.

Currently, wheel-motor units with motor-axle sliding bearings of various designs and lubrication methods are widely used in railway transport, primarily freight. The general disadvantages of these bearings are high friction losses and, as a result, low efficiency, constant supervision due to high lubrication requirements and the danger of overheating, high consumption of lubricants, uneven wear of the bearing and axle, the use of expensive materials for the manufacture of bearings, relatively high labor-intensive manufacturing, which leads to a significant amount of maintenance and high monetary costs, as well as a limited service life due to wear and tear.

Today, in the production of new railway locomotives, unified wheel-motor units with motor-axle rolling bearings are used, which have greater reliability and service life, and do not require large costs during operation and maintenance.

However, the presence of old but working wheel-motor units with motor-axle sliding bearings poses the task of ensuring the use of these blocks to create wheel-motor units with motor-axle rolling bearings, which will make it possible to equip locomotives with more efficient rolling bearings at low costs. This task can be solved by upgrading the existing wheel-motor units with motor-axle sliding bearings.

In the field of railway transport, methods of upgrading equipment are known, for example, a method of modernizing the drain device of a railway tank for petroleum products (patent of Ukraine for a utility model Мо 52878, Е16К 27/00, publ. 10.09.2010), a method of modernizing the stop of the front outlet of the backbone beam of a railway vehicle (patent of Ukraine for a utility model Mo 67254, B28E 9/00, publ. 10.02.2012), a method of modernizing the electric drive of the arrow (patent of the Russian Federation for the invention Mo 2325296, Vb1I 5/06, publ.

From 27.05.2008).

However, these methods and devices do not apply to the modernization of the wheel-motor unit with motor-axle sliding bearings of railway locomotives, which consists of a traction electric motor with motor-axial sliding bearings, a wheel pair, which consists of two wheel centers with rims and an axle, one or two traction reducers, one or two gears, depending on the type of locomotive, and two axles.

A known method of capital repair of the wheel-motor unit of railway locomotives. During overhaul of wheel-motor units, they are disassembled by dismantling the equipment, repairs and restoration of worn units, units and parts are carried out, or non-renewable units, units and parts are replaced, after which the wheel-motor unit is assembled.

Overhaul includes a number of technological operations: removal of the traction reducer housing or housings of two traction reducers (depending on the type of locomotive), removal of the traction electric motor with motor-axle sliding bearings, removal of bushings, depressing of wheel centers with rims from the axle, depressing of a gear wheel or two gears wheels (depending on the type of locomotive), repair of worn units, units and parts or replacement of non-renewable units, units and parts, pressing one or two gear wheels onto the axle, pressing wheel centers with tires onto the axle, connecting the traction electric motor with motor- sliding axial bearings, securing the housing of one traction reducer or the housings of two traction reducers, putting on the bushings. (ЦТ-0038. Rules for maintenance and current repair of AC electric locomotives ВЛбОк ВЛбОп, ВЛ8Ок, ВЛ8Ос, ВЛ8От, ВЛ8б2м, approved by the order of Ukrzaliznytsia dated 60 30.01.2002 Мо 40-Ц ЦТТ-0039 Rules for maintenance and current repair of electric locomotives ЧС2, ЧС4 .

ChMEZE, approved by the order of Ukrzaliznytsia dated June 24, 2009; TsT-468. Rules for repair of locomotives 2713116; Locomotive 2713116. Manual for medium and major repairs;

Diesel locomotive ChMZ3-3. Guide to medium and major repairs. Hryshchenko A.V.,

Strekopyitov V.V., Rolle I.A. Installation and repair of electrified locomotives and electrified trains. - M.

Academy, 2008; Kraskovskaya S.N. etc. Current repair and maintenance of DC electric locomotives. - M.: Transport, 1989).

This method does not allow to significantly increase the service life and reliability of the wheel-motor unit for the traction rolling stock of railway transport, as well as to reduce costs during its operation and maintenance, since it does not provide for the equipment of the wheel-motor unit with motor-axle sliding bearings with effective motor- axial rolling bearings.

The useful model is based on the task of increasing the efficiency of the wheel-motor unit for traction rolling stock of railway transport, by modernizing the wheel-motor unit with motor-axle sliding bearings to equip it with motor-axle rolling bearings, which ensures an increase in the service life and reliability, and as well as a reduction in maintenance costs of the wheel-motor unit, due to the use of rolling bearings, which have greater reliability and service life, and do not require large costs during operation and maintenance.

The task is solved by the fact that in the method of modernization of the wheel-motor unit of a railway locomotive, which consists of a traction electric motor with motor-axle sliding bearings, a wheel pair, which consists of wheel centers with rims and an axle, one or two traction reducers, one or two gear wheels and two axles, which includes dismantling of the traction gear housing or two traction gears, traction electric motor with motor-axle sliding bearings, axles, pressing of wheel centers and one or two gear wheels from the axle, restoration or repair or replacement of the traction gear housing, wheel centers, gears, axles and assembly of the wheel-motor unit, according to the useful model, after dismantling the traction electric motor with

Motor-axial sliding bearings are modernized by removing the motor-axial sliding bearings and welding the beams for mounting the motor-axial rolling bearing housing to the housing of the traction electric motor, replacing the axle of the wheel pair with motor-axial sliding bearings with the axle of the wheel pair with motor-axial rolling bearings , on which the housing in which the motor-axial rolling bearings are installed, when assembling the wheel-motor unit, the modernized traction electric motor is attached to the housing of the motor-axial rolling bearings.

The technical result of the useful model is to ensure the possibility of using wheel-motor units of locomotives with motor-axial sliding bearings as unified wheel-motor units with motor-axial rolling bearings due to the modernization of the traction electric motor housing with motor-axial sliding bearings and installing it on a new axle wheelset with motor-axle rolling bearings during overhaul of locomotive wheel-motor units.

The essence of the method of modernization of the wheel-motor unit of the locomotive of railway transport is shown in the attached drawings, where: in Fig. 1 shows a wheel-motor unit with motor-axle sliding bearings.

In Fig. 2 shows a modernized wheel-motor unit.

The method is implemented as follows.

The wheel-motor unit with motor-axle sliding bearings (Fig. 1) of a railway locomotive consists of a traction electric motor 1 with motor-axial sliding bearings, wheel centers 2 with rims, which together with the axle form a wheel pair, the housing of the traction reducer Z (housings there may be two, it depends on the type of locomotive), one gear wheel (there may be two gears, it depends on the type of locomotive) (not marked in Fig. 1) and two axles 4. The modernization of the wheel-motor unit begins with the operations of dismantling the equipment of the wheel-motor unit in accordance with the requirements established for the repair of the wheel-motor unit by the relevant rules and regulatory documents. From the axle of the wheel pair, remove the housing of the traction reducer C or all housings, if there are two of them. Next, traction motor 1 with motor-axial sliding bearings is removed, which is sent for modernization. After that, the wheel centers 2 with tires, which can be previously removed, and the gear wheel (or two gear wheels) from the axle are pressed. The dismantled equipment, namely, the housing of the traction reducer C (or two housings), wheel centers with rims 2, gear wheel (or two wheels), bushings 4, are repaired or replaced, if the equipment is not subject to restoration in accordance with the requirements established by the relevant rules and regulatory documents. Traction electric motor 1 with motor-axial sliding bearings is being modernized, namely, the motor-axial sliding bearings are removed, support places for attaching the motor-axial sliding bearings are cut out in the housing of the traction electric motor, beams are welded to the traction electric motor housing for attaching the housing of the motor-axial rolling bearings . The axle of the wheel pair with motor-axle sliding bearings is replaced by the axle of the wheel pair with motor-axle rolling bearings. The body is put on the axle, in which the motor-axle rolling bearings are installed, and the modernized wheel-motor unit (Fig. 2) is assembled in accordance with the requirements established for the repair of the wheel-motor unit by the relevant rules and regulatory documents. Gear wheel 5 (or two gear wheels, depending on the type of locomotive) and wheel centers 2 with rims are pressed onto the new axle, modernized traction electric motor 1 is attached to the housing 6 of motor-axle rolling bearings 7, and the housing of the traction reducer Z (or two traction reducers) is fixed depending on the type of locomotive) and put on the axles 4.

The use of a modernized housing of the traction electric motor and a new axle provides the possibility of retrofitting existing wheel-motor units with motor-axle sliding bearings to convert them with motor-axle rolling bearings.

In order to improve the technical characteristics and extend the service life of wheel-motor units that were equipped with motor-axle rolling bearings, NTC "Privid" LLC offers a technology for their modernization during the overhaul of the main units of mainline and shunting locomotives. Modernization of existing wheel-motor units allows to improve the technical characteristics of mainline and shunting locomotives of railway transport in a relatively short period of time and at relatively low costs, to increase the duration of their effective use.

Claims (1)

USEFUL MODEL FORMULA З The method of modernization of the wheel-motor unit of a railway locomotive, which consists of a traction electric motor with motor-axle sliding bearings, a pair of wheels, which consists of wheel centers with rims and an axle, one or two traction reducers, one or two gear wheels and two axles , which includes the dismantling of the housing of the traction gearbox or two traction gearboxes, the traction electric motor with motor-axle sliding bearings, bushings, pressing of wheel centers and one or two gears from the axle, restoration or repair, or replacement of the housing of the traction gearbox, wheel centers, gears , axle box and assembly of the wheel-motor unit, which differs in that after disassembly, the traction electric motor with motor-axial sliding bearings is modernized by removing the motor-axial sliding bearings and welding beams to the housing of the traction electric motor for fastening the housing of the motor-axial rolling bearings, replacing the axle wheeled pairs with motor-axle bearings slide on the axle of a wheel pair with motor-axle rolling bearings, on which the housing in which the motor-axle rolling bearings are installed is put on, when assembling the wheel-motor unit, the modernized traction electric motor is attached to the housing of the motor-axle rolling bearings.