RU209809U1 - FREIGHT CAR TROLLEY - Google Patents

Abstract

The utility model relates to railway transport, namely to two-axle bogies of freight cars intended for installation under freight cars of mainline railways. The freight car bogie comprises a side frame, a bolster, spring suspension with double-row and single-row helical coil springs located under the friction wedges and under the bolster. Under the supporting surfaces of the same height of the springs, there are spacers with a height “h”. The technical result, to which the utility model is directed, is the possibility of unifying the springs of the spring set of the bogie, as well as reducing the laboriousness of selecting springs when completing the spring set of the freight car bogie. 6 w.p. f-ly, 5 ill.

Description

The utility model relates to railway transport, namely to two-axle bogies of freight cars intended for installation under freight cars of mainline railways.

Known bogie two-axle three-element freight wagons of railways, containing a bolster, supported by supporting surfaces on the lower belt on the supporting springs of the central spring suspension, located in the corresponding openings of the side frames, which are thin-walled steel castings, which through the nodes, consisting of adapters and elastic gaskets , placed in axle box openings on the frame consoles, rest on the bearing units of the wheel pairs. The central spring suspension is a combination of groups of one-, two- or multi-row springs supporting the bollard beam, having a bilinear stiffness characteristic, the lower section of which corresponds to the operation of an empty car, and the upper section corresponds to the operation of a car loaded to full load capacity, and the use of wedges in friction vibration dampers increased width, having a flat or variously shaped inclined surface in contact with the inclined surface of the pockets of the bolster, as well as the use of "preload" of the largest spring in the group of springs supporting wedges of friction dampers (RU 2608205, IPC B61F 3/08, B61F 5/06, B61F 5/16, B61F 5/26, B61F 5/52, published 01/17/2017).

The disadvantage of the known technical solution is the use of double-row springs with different heights in the bogie, which leads to an increase in the range, an increase in costs in the production of springs and the repair of the bogie.

A spring suspension of a freight car bogie is known, containing double-row wedge springs used to suspend the wedge of the friction damper and a spring used to suspend the bolster, while the height of the wedge springs in the free state is made larger than the size of the opening of the spring window of the freight car bogie, measured between the supporting surface side frame and the lower bearing surface of the wedges of the friction damper, and at the same time being in the extreme upper position with the emphasis of the wedges in the bearing surfaces of the bolster, and the bolster - in the upper edge of the spring window of the side frame (RU 157931, IPC B61F 5/12, publ. . 20.12.2015).

The disadvantage of this technical solution is the need to use springs with different heights, which leads to an increase in the range, increased costs in the production of springs and repair of the cart.

It is known spring suspension of a truck of a freight railway car, containing double-row springs, assembled from external and internal springs, designed to be placed under the friction wedges of the vibration damper and under the bolster, while the outer and inner springs of the double-row springs, designed to be placed under the friction wedges of the vibration damper, are made with equal heights in the free state, the outer and inner springs of the double-row springs intended for placement under the bolster are made with unequal heights in the free state and at the same time less than the heights of the double-row springs intended for placement under the damper friction wedges vibrations in the free state (RU 160055, IPC B61F 5/00, publ. 27.02.2016).

The disadvantage is the use of double-row springs with different heights, which leads to an increase in the range, an increase in costs in the production of springs and repair of the bogie.

The closest analogue to the claimed utility model is a freight car bogie containing side frames, wheelsets, a bolster, a spring suspension consisting of a set of springs and wedges, a pendulum located between the bolster and a set of springs. At the same time, elastic elements are installed between the pendulum and the bolster, and the pendulum is connected to the elastic elements with detachable connections (RU 189 698, IPC B61F 5/50, B61F 3/08, publ. 05/30/2019).

The disadvantage of this technical solution is that the use of the pendulum reduces the misalignment of the bolster in the bogie, but does not exclude it, as well as the use of double-row springs with different heights, which leads to an increase in the range, increased costs in the production of springs and repair of the bogie.

The objective of the claimed utility model is the use of double-row unified springs of a spring set of the same height in the bogie, which leads to a reduction in the range of springs, a reduction in the cost of producing springs and repairing the bogie, and also reduces the complexity of selecting springs when completing the bogie, which will reduce the range of parts.

The technical result, to which the utility model is directed, is the possibility of unifying the springs of the spring set of the bogie, as well as reducing the laboriousness of selecting springs when completing the spring set of the bogie of a freight car.

Said technical result is achieved in that the freight car bogie comprises a side frame, a bolster, spring suspension with double-row and single-row helical coil springs located under the friction wedges and under the bolster. Under the bearing surfaces of the same height of the springs, there are spacers with a height “h”. The features of the utility model are

1. Truck of a freight car.

2. Containing a side frame.

3. Bolster.

4. Spring suspension.

5. Containing double-row or single-row helical coil springs.

6. Located under the friction wedges and under the bolster.

7. Spacers with a height of "h" provide a difference in the heights of the springs.

8. Gaskets of height “h” are located under the bearing surfaces of the same height of the springs.

9. Gaskets for internal and external springs can be made in different heights "h".

10. Gaskets can be located under the internal springs.

11. Gaskets can be located under the outer springs.

12. “H” collar gaskets may include an “H-h” collar to limit horizontal movement of the springs.

13. Gaskets can be made of metal.

14. Gaskets can be made from non-metallic material. Features 1-6 are common with the prototype, features 7-9 are

essential distinguishing features of the utility model, features 10-14 are complementary features of the utility model.

The utility model is illustrated by graphic material:

figure 1 - general view of a freight car bogie,

figure 2 - top view of the spring suspension,

figure 3 - local view A with spring suspension, with the location of the gasket under the bearing surfaces of certain springs,

figure 4 - 3D model of the gasket in dimetry,

figure 5 is a gasket containing a shoulder to limit the shift relative to the springs.

The proposed truck freight car works as follows.

Freight car truck (Fig. 1) contains a side frame 1, a bolster 2, a spring suspension 3 with double-row and single-row helical coil springs 4, designed to be placed under the friction wedges 5, and springs 6, designed to be placed under the bolster bolster 2. Springs 4 and 6 of the spring suspension 3 (Fig. 2) are made of the same height, although the springs 4 placed under the friction wedges 5 must have a height greater than the springs 6. In this regard, in the spring opening 7 of the side frame 1 on the boss 8 ( Fig. 3) gaskets 9 are installed, designed to center the springs and limit movement, designed to increase the heights of the required springs. Gaskets 9 can be located under the inner springs, under the outer springs, or under both at the same time, and are made in different heights "h". Gaskets can be made of both metal and non-metal material.

When testing, we used (Fig. 4-5) gaskets 9 with a height “h” located under the supporting surfaces of the same height of the springs.

Gaskets 9 may contain a shoulder height "H-h" to limit the horizontal shift of the springs (Fig. 4-5). Height "h" can be selected in the range of 5-100 mm. The height "H" can be selected in the range of 10-150 mm, based on the condition H=h+5...50 mm.

Thus, the proposed technical solution allows the use of spring suspension with springs of the same height in the bogie, which leads to the unification of the springs of the bogie spring set, as well as to a decrease in the laboriousness of selecting springs when completing the bogie spring set.

Claims (7)

1. Freight car bogie, containing a side frame, a bolster, spring suspension with double-row and single-row helical coil springs located under the friction wedges and under the bolster, characterized in that under the bearing surfaces of the same height of the springs there are spacers with a height "h". 2. Freight car bogie according to claim 1, characterized in that the gaskets with collar height "H" may contain collar height "H-h" to limit the horizontal shift of the springs. 3. Freight car trolley according to claim 1, characterized in that the gaskets are located under the internal springs. 4. Freight car trolley according to claim 1, characterized in that the gaskets are located under the outer springs. 5. Freight car trolley according to claim 1, characterized in that the gaskets for the inner and outer springs are made of different heights "h". 6. Freight wagon trolley p. 1, characterized in that the gaskets are made of metal. 7. Freight car trolley of claim 1, characterized in that the gaskets are made of non-metallic material.

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