RU190776U1 - TRAINING CARGO CARGO HANGING TRUCK - Google Patents

Abstract

The utility model relates to the field of railway transport, in particular, to spring suspension of carriages of railway freight cars, and can be used in the construction of heavy freight cars having a trolley with a maximum design load from the wheel set on the rails 25-30 tf. The technical result is achieved by the fact that the spring suspension of a freight car truck includes two spring sets, each of which is made of seven double-row coil springs, including external and internal coil springs with working and support coils, located under friction wedges and under a spring bar, and the springs have a cataphoretic coating. 3 of FIG.

Description

The utility model relates to the field of railway transport, in particular to the spring suspension of carts of railway freight cars and can be used in the construction of heavy freight cars that have a cart with a maximum design load from the wheel set on the rails 25-30 tf.

The suspension of a two-axle bogie of a freight car (RU # 183704, MГЖ B61F 5/06, publ. 10/01/2018) is known, which contains two spring sets, each of which is made of seven double-row helical coil springs, including external and internal springs, located under friction wedges and under the bolster. The sum of the indices of the outer and inner springs of the double-row helical coil spring installed under each friction wedge is at least 11.40, and the sum of the indices of the outer and inner springs of each two-row helical coil spring installed under the bolster is smaller than the sum of the indices of the springs of the two-row helical coil spring installed under the friction wedge, not more than 0.40.

The closest technical solution for the combination of features is the spring suspension of a two-axle trolley of a freight car (RU # 167062, IPC B61F 5/00, publ. 12/20/2016), which contains two spring sets, each of which is made of seven double-row helical coil springs, including external and internal springs located under the friction wedges and under the bolster. The number of working turns of the outer spring is 3.85-4.20, and the number of working turns of the internal spring is 6.00-6.80, and the index of the external spring, defined as the ratio of the average diameter of the coil to the diameter of the spring bar, is 5.450-5.930, and the index of the internal spring is 5,200-6,053.

A common disadvantage of existing solutions is the small period of time for the preservation of the surface coating, and do not provide good physical and mechanical properties.

The technical result of the claimed utility model is to increase the physico-mechanical properties and corrosion resistance, thereby increasing the service life of the surface coating of the springs.

The technical result is achieved in that the spring suspension of the trolley of a freight car includes two spring sets, each of which is made of seven double row cylindrical springs, including outer and inner coiled springs with working and supporting coils, located under the friction wedges and under the bolster beam, and the springs have cataphoresis coating.

Cataphoretic coating, at the same time combining elements of physical and chemical insulation.

The main advantages of this coating:

- high resistance of the soil to external negative impacts, which create the conditions for the formation of corrosion;

- uniform laying layer;

- high penetrating ability, environmental safety.

The proposed utility model is illustrated by drawings, where in FIG. 1 shows a general view of a two-axle bogie with the proposed spring suspension; FIG. 2 and 3 - external and internal spring suspension spring in the section.

The proposed spring suspension consists of two spring sets 1, each of which is made of seven symmetrically arranged two-row cylindrical springs, including outer 2 and inner 3 twisted springs with working and supporting coils. Springs 2 and 3 are located under the friction wedges 4 and under the bolster 5. The internal springs 3 are the same height as the external 2 and the cataphoresis coating is applied to the springs.

The proposed spring suspension is used in trucks of a freight car with the maximum design load from the wheelset on the rails 25-30 tf. These carts (Fig. 1) most often contain a bolster 5, two side frames, two wheel pairs, axle boxes, spring suspension, located on each side of the cart, consisting of a set of 1 double-row twisted springs, including outer 2 springs and inner 3 springs.

Claims (1)

Suspension suspension of a freight car truck, including two spring sets, each of which is made of seven double row cylindrical springs, including outer and inner coiled springs with working and supporting coils located under the friction wedges and under the bolster beam, characterized in that the springs have a cataphoresis coating .

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