EA028425B1 - Method for modernizing a wheel-motor unit for railway locomotive stock - Google Patents

Abstract

The invention is related to railway transport, in particular, to wheel-motor units for railway locomotive stock, and allows utilization of motor-axle rolling bearings instead of motor-axle plain bearings in wheel-motor units of main-line and shunting locomotives. A wheel-motor unit for railway locomotive stock consists of a traction motor with motor-axle plain bearings, a wheel pair consisting of wheel centres with tyres and an axle, one or two traction gear boxes, one or two gears and two axle-boxes. A method for modernizing a wheel-motor unit includes dismantling of the traction gear box body and two traction gear boxes, the traction motor with motor-axle plain bearings, pressing wheel centres and one or two gears out of the axle, restoration or repair or replacement of the traction gear box body, wheel centres, gears, axle-boxes, and assembly of the wheel-motor unit. After dismantling, motor-axle plain bearings in the traction motor are removed, bearing sites for mounting the motor-axle plain bearings are cut in the body of the traction motor, and bars for mounting motor-axle rolling bearings are welded to the traction motor body. A wheel pair axle with motor-axle plain bearings is then replaced by a wheel pair axle with motor-axle rolling bearings, and a body into which the motor-axle rolling bearings are inserted is fitted thereon, during the assembly of the wheel-motor unit, the modernized electric traction motor is connected to the body of the motor-axle rolling bearings.

Description

The invention relates to railway transport, and in particular, to wheel-motor blocks for traction rolling stock of railways and relates to a method for the modernization of wheel-motor blocks of main and shunting locomotives with motor-axial plain bearings for the purpose of using motor-axial rolling bearings in them.

State of the art

Currently, wheel-motor blocks with motor-axial sliding bearings of various designs and methods of lubrication are widely used on traction rolling stock of railway transport, and first of all, freight transport. The common disadvantages of these bearings are large friction losses and, as a result, low efficiency, constant supervision due to high lubrication requirements and the risk of overheating, high consumption of lubricants, uneven bearing wear on the axle, use of expensive materials for the manufacture of bearings, the relatively high complexity of manufacturing, which leads to a significant amount of maintenance and large cash costs, as well as a limited service life in consequence wear and tear.

Today, in the production of new rolling stock of railway transport, unified wheel-motor blocks with motor-axial rolling bearings are used, which are more reliable and have a longer service life, and also do not require large expenditures during operation and maintenance.

However, the presence of old, but working wheel-motor blocks with motor-axial sliding bearings sets the task to ensure the use of these blocks to create wheel-motor blocks with motor-axial rolling bearings, which will make it possible to equip the rolling stock with more efficient rolling bearings. This task can be solved by modernizing existing wheel-motor blocks with motor-axial plain bearings.

In the railway transport industry, equipment modernization methods are known, for example, a method for upgrading a drain device of a railway tank for oil products (Ukrainian patent for utility model No. 52878, Р16К 27/00, published on 09/10/2010), a method for upgrading the stop of the front socket of a spinal beam of a railway vehicle (Patent of Ukraine for utility model No. 67254, Р28Р 9/00, publ. 02/10/2012), a method of modernization of a pointer electric drive (patent of the Russian Federation for invention No. 2325296, ВЬЬ 5/06, publ. 05/27/2008).

However, these methods and devices do not concern the modernization of the wheel-motor block with motor-axial plain bearings for traction rolling stock of railway vehicles, which consists of a traction motor with motor-axial plain bearings, a pair of wheels consisting of a wheel center with a brace and an axle, one or two traction gears, one or two gears, depending on the type of locomotive, and two axle boxes.

A known method of overhaul of the wheel-motor unit for traction rolling stock of railway transport. During the overhaul of wheel-motor blocks, they are disassembled, dismantling the equipment, repair and restore worn-out units, assemblies and parts, or replace units, assemblies and parts that cannot be restored, and then assemble the wheel-motor block.

Overhaul includes a number of technological operations:

removal of the housing of the traction reducer or the housings of two traction reducers (depending on the type of locomotive), removal of the traction motor with motor-axial plain bearings, removal of the axle boxes, extrusion of wheel centers with bandages from the axle, extrusion of a gear wheel or two gears (depending on type locomotive), repair of worn-out units, assemblies and parts, or replacement of units, assemblies and parts not subject to restoration, pressing on the axis of one or two gear wheels, pressing on the axle of wheels centers with bandages, connecting a traction motor with motor-axial plain bearings, securing the housing of one traction gearbox or the housings of two traction gearboxes - dressing the axle boxes.

(CT-0038. Rules for the maintenance and repair of AC electric locomotives VL60k VL60p, VL80k, VL80s, VL80t, VL82m, approved by Order of the State Administration of Ukraine Railways dated 30.01.2002 No. 40-Ts; TsT-0039 Rules for maintenance and repair electric locomotives ChS2, ChS4, ChS7, ChS8, approved by Order of the State Administration of Ukraine Railways dated 30.01.2002 No. 40-Ts; CT-0042 Rules for maintenance and fluid repairs of locomotives of the ChME3, ChME3T, ChME3E series, approved by Order G State Administration of Railway Transport of Ukraine dated 06.24.2009; CT-1 028425

468. Rules for repair of diesel locomotives 2TE116; Locomotive 2TE116. Manual on average and overhaul; Locomotive ChME-3. Guidelines for medium and overhaul. Grishchenko A.V., Strekopytov V.V., Rolle I.A. Device and repair of electric locomotives and electric trains. M: Academy, 2008; Kraskovskaya S.N. and other. Current repair and maintenance of DC electric locomotives. - M., Transport, 1989).

This method does not significantly increase the life and reliability of the wheel-drive unit for traction rolling stock of railway transport, as well as reduce the costs of its operation and maintenance, as it does not provide for equipping the wheel-motor unit with motor-axial plain bearings with effective motor-axial bearings rolling.

SUMMARY OF THE INVENTION

The basis of the invention is the task to increase the efficiency of the wheel-motor block for traction rolling stock of railway transport, by modernizing the wheel-motor block with motor-axial plain bearings to equip it with motor-axial rolling bearings, which will increase the service life and reliability, as well as reduce costs during maintenance of the wheel-motor unit due to the use of rolling bearings having greater reliability and service life, as well as not ebuyuschih costly operation and maintenance.

The problem is solved in that in the method of upgrading a wheel-motor unit for a traction rolling stock of railways, consisting of a traction motor with motor-axial plain bearings, a pair of wheels consisting of wheel centers with braces and an axis, one or two traction gears, one or two gears and two axle boxes, which includes the dismantling of the housing of the traction gearbox or two traction gearboxes, the traction motor with motor-axial plain bearings, axle boxes, pressing out the wheels centers and one or two gears from the axis, restoration or repair or replacement of the traction gear housing, wheel centers, gears, axle boxes and assembly of the wheel-motor block, according to the invention, after dismantling, the traction motor with motor-axial plain bearings is modernized by removal motor-axial bearings, cutting in the housing of the traction motor bearings for mounting motor-axial bearings and welding beams to the housing of the traction motor under the cross the casing of the motor-axial rolling bearings, replace the axle of the wheelset with motor-axial bearings on the axis of the wheelset with motor-axial bearings, on which they put the housing into which the motor-axial bearings are inserted, when assembling the wheel-motor block, the upgraded traction electric motor is attached to the housing of motor-axial rolling bearings.

The technical result of the invention is the provision of the possibility of using wheel-motor blocks of locomotives with motor-axial sliding bearings, by modernizing the body of the traction motor with motor-axial sliding bearings, as well as using a new axis of the wheel pair, with installed motor-axial rolling bearings, during execution major repairs, as unified wheel-motor blocks with motor-axial rolling bearings.

List of drawings

The essence of the method of upgrading the wheel-motor unit for traction rolling stock of railways is shown in the attached drawings, where:

in FIG. 1 shows a wheel-motor block with motor-axial plain bearings; in FIG. 2 depicts an upgraded wheel-motor unit.

An example embodiment of the invention

The method is implemented as follows.

The wheel-motor block with motor-axial sliding bearings (Fig. 1) for traction rolling railway transport consists of a traction electric motor 1 with motor-axial sliding bearings, wheel centers 2 with tires, which together with the axis make up a pair of wheels, a traction gear housing 3 ( there can be two housings, depending on the type of locomotive), one gear wheel (there may be two gears, depending on the type of locomotive) (not indicated in Fig. 1) and two axle boxes 4. The modernization of the wheel-motor unit begins I am from the operations of dismantling the equipment of the wheel-motor block in accordance with the requirements established for the repair of the wheel-motor block by the relevant rules and regulatory documents. From the axis of the wheelset remove the housing of the traction reducer 3 or all the housings, if there are two. Next, remove the traction engine 1 with motor-axial plain bearings, which are sent for modernization. Then produce the extrusion of the wheel centers 2 with bandages, which can be previously removed, and the gear (or two gears) from the axis. Dismantled equipment, namely, the housing of the traction reducer 3, wheel centers with bandages 2, gears, axle boxes 4, are repaired or replaced if the equipment cannot be restored in accordance with the requirements established by the relevant rules and regulatory documents. 1 s traction motor

- 2 028425 they modernize with motor-axial plain bearings, namely, they remove the motor-axial plain bearings, cut out the support points for mounting the motor-axial plain bearings in the housing of the traction motor, and weld beams to the housing of the traction motor for attaching the housing of the motor-axial rolling bearings. Replace the axis of the wheelset with motor-axial bearings on the axis of the wheelsets with motor-axial bearings. A housing is mounted on the axis into which the motor-axial rolling bearings are mounted, and the upgraded wheel-motor block is assembled (Fig. 2) in accordance with the requirements established for the repair of the wheel-motor block by the relevant rules and regulations. A gear wheel 5 (or two gears depending on the type of locomotive) and wheel centers 2 with bandages are pressed onto the new axis, the upgraded traction motor 1 is connected to the housing 6 of the motor-axial rolling bearings 7, the housing of the traction gear 3 (or two traction gears) is fixed depending on the type of locomotive) and put on axle boxes 4.

The use of a modernized traction motor housing and a new axis makes it possible to modernize existing wheel-motor blocks with motor-axial plain bearings for re-equipping them with motor-axial rolling bearings.

In order to increase technical characteristics and extend the life of wheel-motor blocks, which were equipped with motor-axial plain bearings, NTC Drive LLC offers a technology for their modernization during major repairs of the main units of main and shunting locomotives. Modernization of existing wheel-motor blocks allows for a relatively short time and at relatively low cost to improve the technical characteristics of the rolling stock of railway transport, to increase the duration of its effective use.

Claims (1)

CLAIM A method of upgrading a wheel-motor unit for a traction rolling stock of railways, consisting of a traction motor with motor-axial plain bearings, a pair of wheels consisting of wheel centers with braces and an axle, one or two traction gearboxes, one or two gears and two axle boxes , including the dismantling of the housing of the traction gearbox or two traction gearboxes, the traction motor with motor-axial plain bearings, axle boxes, the extrusion of wheel centers and gears from the axis, restored repair or replacement of the traction gear housing, wheel centers, gears, axleboxes and assembly of the wheel-motor block, characterized in that after dismantling the traction motor with motor-axial plain bearings is modernized by removing the motor-axial plain bearings, cutting in the traction housing electric bearings for mounting motor-axial bearings and welding to the housing of the traction motor of the beams under the housing of the motor-axial bearings, replace l wheelset with motor-axial bearings on the axis of the wheelset with motor-axial bearings, on which they put a housing into which the motor-axial bearings are mounted, when assembling the wheel-motor block, a modernized traction motor is connected to the motor-axial bearings rolling.