RU2545240C1 - Method of updating rolling stock motored wheel assembly - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: for updating, traction motor of rolling stock motored wheel assembly are dismantled. After dismantling, axle antifriction bearings are removed, seats are cut in motor housing for securing of said axial bearings to weld the beam to said housing for securing of said axial antifriction bearings. Then, motored wheel assembly is replaced by a new one with rolling bearings to fit the housing thereon for rolling bearings to be fitted therein. In assembly, updated traction motor is coupled with the housing of rolling bearings.

EFFECT: longer life.

2 dwg

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 sliding bearings with the aim of using motor-axial rolling bearings in them.

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, the 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 due to 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, methods for upgrading equipment 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, F16K 27/00, published September 10, 2010), a method for upgrading the stop of the front socket of the spinal beam of a railway vehicle ( Patent of Ukraine for utility model No. 67254, F28F 9/00, publ. 02/10/2012), a method of modernization of a pointer electric drive (patent of the Russian Federation for invention No. 2225296, B61L 5/06, publ. 05.27.2008).

However, these methods and devices do not concern the modernization of the wheel-motor block with motor-axial sliding bearings for traction rolling stock of railway transport, which consists of a traction motor with motor-axial sliding bearings, a pair of wheels consisting of a wheel center with a bandage and an axle, one or two traction gearboxes, 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 units, they are disassembled, dismantling the equipment, repair and restore worn-out units, assemblies and parts, or replace units, units and parts that cannot be restored, and then assemble the wheel-motor unit.

Overhaul includes a number of technological operations:

- removal of the housing of the traction gearbox or the housings of two traction gearboxes (depending on the type of locomotive),

- removal of the traction motor with axial motor bearings,

- removal of axle boxes,

- pressing out wheel centers with bandages from the axis,

- pressing out a gear or two gears (depending on the type of 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 gears,

- pressing on the axis of the wheel centers with bandages,

- connection of a traction motor with axial motor bearings,

- fixing the housing of one traction gearbox or the housings of two traction gearboxes,

- putting on the axle boxes.

(CT-0038. Rules for the maintenance and repair of AC electric locomotives VL60k, VL60p, VL80k, VL80s, VL80t, VL82 m, approved by Order of the State Administration of Ukraine Railways dated 30.01.2002 No. 40-Ts; TsT-0039. Rules for maintenance and current repair of electric locomotives ChS2, ChS4, ChS7, ChS8 approved by Order of the State Administration of Ukraine Railways dated 30.01.2002 No. 40-Ts; TsT-0042. Rules for maintenance and repair of diesel locomotives of the ChME3, ChME3T, ChME3E series, approved by the Order State Administration of Railway Transport of Ukraine dated June 24, 2009; CT-468. Rules for the repair of diesel locomotives 2TE116; Locomotive 2TE116. Guide for medium and overhaul; Locomotive ChME-3. Guide for medium and overhaul. Grishchenko AV, Strekopytov V. V., Rolle I.A. Device and repair of electric locomotives and electric trains. M: Academy, 2008; Kraskovskaya S.N. et al. Current repair and maintenance of DC electric locomotives. - M., Transport, 1989).

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

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 sliding bearings to equip it with motor-axial rolling bearings, which will increase the service life and reliability, as well as reduce costs for maintenance of the wheel-motor unit, due to the use of rolling bearings, which have greater reliability and service life, as well as not Larger operating and maintenance costs.

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 with an 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 of motor-axial sliding bearings, cutting out in the housing of the traction motor of support points for fastening the motor-axial sliding bearings and welding beams to the housing of the traction motor of the cr 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 the housing is put on, into which the motor-axial rolling bearings are inserted, when assembling the wheel-motor block 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 and also using a new axle of a pair of wheels, with installed motor-axial rolling bearings, during repair, as a unified wheel-motor blocks with motor-axial rolling bearings.

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

figure 1 shows a wheel-motor unit with motor-axial bearings;

figure 2 shows the upgraded wheel-motor block.

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 motor 1 with motor-axial sliding bearings, wheel centers 2 with bandages, which together with the axis make up a pair of wheels, a traction reducer housing 3 ( there can be two cases, depending on the type of locomotive), one gear wheel (there can 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 from operations to dismantle 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 gearbox 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. The traction motor 1 with motor-axial plain bearings is modernized, namely, the motor-axial plain bearings are removed, the reference points for mounting the motor-axial plain bearings are cut out in the housing of the traction motor, and beams are welded to the housing of the traction motor for mounting the motor-axial bearings. Replace the axis of the wheelset with motor-axial bearings on the axis of the wheelsets with motor-axial bearings. A housing is put on the axis, into which motor-axial rolling bearings are installed, and the upgraded wheel-motor block is assembled (Fig. 2) in accordance with the requirements established for repairing the wheel-motor block by the relevant rules and regulatory documents. 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, Scientific and Technical Center “Drive” LLC offers a technology for their modernization during the overhaul of the main units of trunk 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)

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 or repairing or replacing the housing of the traction reducer, wheel centers, gears, axle boxes and assembling the wheel-motor block, characterized in that after dismantling, the traction motor with motor-axial plain bearings is modernized by removing motor-axial plain bearings, cutting into the housing of the traction motor of bearing points for mounting the motor-axial sliding bearings and welding to the housing of the traction motor of the beams under the mount of the housing of the motor-axial rolling bearings, replace the wheelset with motor-axial bearings on the axle of the wheelset with motor-axial bearings, on which the housing is mounted, in which the motor-axial bearings are mounted, when assembling the motor-wheel block, a modernized traction motor is connected to the motor-axial bearings rolling.

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