RU136407U1 - WHEEL-MOTOR LOCOMOTIVE BLOCK - Google Patents

Abstract

A locomotive wheel-motor block containing a wheel pair, a traction reducer, a traction motor based on the wheel pair axis through rolling bearings pressed onto it, characterized in that, in order to increase the reliability of the wheel-motor block and increase the overhaul period, the traction motor is installed with based on the frame of the trolley using an articulated suspension with elastic elements, the wheelset contains a gear wheel with elastic elements, in the hub of which ring grooves are made, and the bearings are of The rings contain inner rings fixed axially by the hub of the gear on one side and the labyrinth ring on the other, while a locking collar is installed between the labyrinth ring and the hub of the wheel center.

Description

The utility model relates to the field of rail vehicles and can be used in the construction of shunting and mainline diesel locomotives.

The prior art wheel-locomotive block of a locomotive, consisting of a traction electric motor, the anchor of which is connected with gears to the gears mounted on the axis of the wheelset. Each of the gears on its end surfaces facing the backbone of the TED is equipped with an annular recess in which the rolling bearings are located, made for example in the form of angular contact ball bearings placed in the vertical plane of the said annular grooves at an angle of 90 ° to each other friend and mounted on the fingers rigidly fixed on the said skeleton TED. The technical result consists in increasing reliability by ensuring a stable center distance between the gears of the drive (RF patent No. 2399528, B61C 9/00, publ. 09/20/10.).

A disadvantage of the known technical solution is that the rolling bearings 11 (Fig. 3) are installed in the annular groove of the gear 6 (Fig. 2) with a gap, which results in their uneven loading due to tolerances in the manufacture and skew of the outer rings of the bearings, as well as for due to gaps, shock loads from the unsprung mass of TED both on the indicated bearings and on the gear wheel increase, which, in turn, leads to a decrease in the strength, endurance, and bearing capacity of the assembly as a whole.

Another drawback of this design is that the unsprung mass of the TED is supported through bearings 11 on the traction gears 6, which increases the bending stresses in its body from the effects of dynamic radial and axial forces, reducing the endurance resource of the gear.

The closest analogue of the known ones is the locomotive wheel-motor unit, in which the traction motors are supported on the axles of the wheelsets through rolling bearings pressed onto them (RF patent No. 117377, B61C 9/50 of January 26, 2012, published on June 27, 2012).

The disadvantages of the known device include the lack of technical ability to prevent the sliding of the inner rings of bearings under the action of axial forces when the locomotive moves in curved sections of the track. This reduces the reliability of the wheel-motor unit as a whole and increases repair costs.

The technical result of the utility model is to increase the reliability of the wheel-motor unit, as well as to increase the overhaul period.

The specified technical result is achieved by the fact that in the known wheel-motor unit of a locomotive containing a pair of wheels, a traction gearbox, a traction motor based on the axis of the pair of wheels through rolling bearings pressed onto it, the traction motor is based on the carriage frame using articulated suspension with elastic elements. The wheelset contains a gear wheel with elastic elements, in the hub of which annular grooves are made. Rolling bearings contain inner rings that are axially fixed on two sides: the gear hub on one side and the labyrinth ring on the other. Also new is the fact that a locking collar is installed between the labyrinth ring and the wheel center hub.

The use of articulated suspension with elastic elements for TED, based on the frame of the trolley, ensures the synchronization of the natural frequency of the oscillations of the suspension with the frequency of rotation of the electromagnetic field of the traction motor. Fixing bearings in the axial direction from two sides provides the necessary structural rigidity, and the use of a locking collar installed between the labyrinth ring and the wheel center hub prevents the inner rings of bearings from sliding under the action of axial forces, which are especially manifested when the locomotive moves in curved sections of the track. Thus, the claimed technical solution ensures the achievement of the technical task of increasing the reliability of the wheel-motor unit as a whole and increasing the period of overhaul maintenance.

The totality of the claimed essential features ensures the compliance of the claimed utility model with the patentability criterion of “novelty”.

The inventive utility model is presented in the following graphic images:

In FIG. 1 is a general view of a locomotive wheel-motor unit; type A - safety device;

In FIG. 2 - General view of the wheelset;

In FIG. 3 - view B, view C in FIG. 2 - rolling bearings.

The locomotive wheel-motor block (Fig. 1-3) contains a pair of wheels 1, a traction reducer 2, a traction motor 3, which is supported on one side by an axle 4 of a pair of wheels through rolling bearings 5.1, 5.2 pressed onto it. On the other hand, the traction motor is supported on the trolley frame 6 by an articulated suspension 7 with elastic elements 8. The wheel pair contains an elastic gear 9, in the hub 10 of which ring grooves 11 are located. Rolling bearings contain inner rings 12. The inner rings of the bearings are fixed in axial the direction of the hub of the gear on one side and the labyrinth ring 13 on the other. A locking collar 14 is installed between the labyrinth ring and the hub.

Works wheel-motor unit as follows. The wheel-motor block (Fig. 1) provides kinematic and power communication between the wheelset 1 and the traction motor 3. The traction reducer 2 converts the electric energy of the TED into the mechanical work of the wheelset. The torque of the TED is transmitted to the wheelset through a single-stage gear transmission: a gear pressed through the armature shaft and in constant engagement with the elastic gear 9. When assembling the wheel-motor block, the traction motor is supported on the axle 4 of the wheel pair on the one hand, and on the other on the side, the electric motor rests on the trolley frame 6 with the help of an articulated suspension 7 with elastic elements 8. When assembling the wheelset (Fig. 2), an elastic gear wheel is mounted on the axle using the thermal method, in the hub 10 of which the annular grooves are variably performed 11. The annular grooves are filled with Buksol grease, after which a bearing cover is put on the axis, which is centered along the grooves in the hub. Then, from the side of the grooves 11 on the gear wheel, the inner ring 12 of the conical bearing 5.1 is installed until it stops in the hub of the elastic gear (Fig. 3). An outer ring of the bearing is installed in the bearing housing by thermal method. Grease is applied to the inner ring. The bearing housing with the outer ring fitted is put on the inner ring of the bearing and tightened with bolts. Bolts are locking. The mounted bearing housing is bolted to the bearing cap. Using the thermal method, the labyrinth ring 13 is planted. Then, the inner ring of the second tapered bearing 5.2 is likewise mounted on the axle of the wheelset. To prevent axial movement of the bearings between the labyrinth ring and the hub set the retaining clamp 14.

The claimed utility model has been tested as part of a prototype shunting and export diesel locomotive. The locomotive wheel-motor unit is intended for use in an industrial environment and is manufactured in an industrial environment, which allows us to consider the claimed utility model as meeting the patentability criterion of “industrial applicability”.

Claims (1)

A locomotive wheel-motor block containing a wheel pair, a traction reducer, a traction motor based on the wheel pair axis through rolling bearings pressed onto it, characterized in that, in order to increase the reliability of the wheel-motor block and increase the overhaul period, the traction motor is installed with based on the frame of the trolley using an articulated suspension with elastic elements, the wheelset contains a gear wheel with elastic elements, in the hub of which ring grooves are made, and the bearings are of The rings contain inner rings fixed axially by the hub of the gear on one side and the labyrinth ring on the other, while a locking collar is installed between the labyrinth ring and the hub of the wheel center.

Images