RU110046U1 - WEAR-RESISTANT REPLACEABLE ABSORBER OF A RAILWAY CARRIAGE VEHICLE VIBRATION - Google Patents

Abstract

The technical solution relates to railway transport, to wagon trolleys. In the thrust bearing 3 of the nadressor beam 2 of the side frame 1 of the trolley, a wear-resistant removable absorber 4 is used, made in the form of a bowl with a central hole of metal plates 6 and 7, between which there is an elastic gasket 8. The use of a wear-resistant removable absorber reduces the wear of the rubbing surfaces in the area of the carriage's Friday and the thrust bearing of the trolley due to the reduction of high-frequency vibrations arising from the movement of the car (trolley). 2 s.p. f-ly, 2 ill.

Description

The technical solution relates to railway transport, to wagon trolleys.

A known design of the thrust node of a railway carriage trolley, in which a thrust insert in the form of a bowl with a hole in the center, which is installed in the thrust bearing, is used - RF patent No. 2286272 "The thrust bearing insert of the overpressor beam of a freight wagon trolley" dated 11.02.2005.

The disadvantage of the design is the inability to absorb high-frequency vibrations of parts in the area of the thrust bearing and, as a result, increased wear of the contacting surfaces of the heel and thrust bearing.

As the closest analogue, a thrust damper device made in the form of a bowl, repeating the shape of the thrust bearing, with a hole in the center, consisting of an elastic gasket and metal plates firmly connected to it, is adopted - RF patent No. 2397090 “Damping of the thrust bearing” dated 01.12.2008.

A design drawback is the design complexity, the use of a liquid material as a damping layer.

The technical result of the proposed solution is to reduce the wear of the rubbing surfaces of the Friday and the thrust bearing, to improve the dynamic qualities of the trolleys without changing their design.

The specified technical result is achieved due to the fact that in the wear-resistant removable vibration absorber of the thrust bearing of the railway carriage trolley, made in the form of a bowl repeating the shape of the thrust bearing, with a hole in the center, consisting of an elastic gasket with a thickness of a and metal plates firmly connected to it with a total thickness of "c", according to the proposed technical solution, the thickness "a" of the elastic strip is less than or equal to the total thickness "in" of the metal plates.

In addition, a wear-resistant removable absorber consists of n elastic plates and n + 1 metal plates, with a≤v and n = 1 ... 5.

Also, in a wear-resistant removable absorber, the thickness of the elastic gasket "a" is 1-5 mm.

The elastic plate of small thickness allows to reduce the wear of the contact surfaces of the Friday and the thrust bearing, between which the block is installed, due to the damping of high-frequency vibrations arising from the movement of the trolley (car).

The use of several elastic gaskets allows you to make a removable block of the required thickness and reduce the intensity of high-frequency vibrations of various elements of the chassis and reduce wear of the contacting surfaces.

An elastic gasket having a small thickness "a" equal to 1-5 mm, allows you to effectively dampen high-frequency vibrations in contact with the elastic block of the friday and thrust bearing of the trolley.

The essence of the technical solution is illustrated by drawings, in which: in Fig.1 - a trolley with a thrust bearing, equipped with a wear-resistant removable absorber; figure 2 - wear-resistant removable absorber.

The trolley (Fig. 1) contains side frames 1, a sprung beam 2, in the center of which a thrust bearing is made 3. In the thrust bearing is a wear-resistant removable absorber 4 in the form of a bowl with a hole 5 for a king pin (not shown), repeating the shape of the thrust bearing 3.

The wear-resistant removable absorber consists of metal plates 6 and 7 of thickness c and d, respectively, between which there is an elastic gasket 8 of thickness a. The gasket 8 is made of an elastic material, preferably of an elastomeric material, for more effective damping of vibrations, rubber, etc. The gasket 8 is firmly connected to the metal plates 6, 7 by gluing, vulcanizing, pouring, or in another way. The total thickness end of the two plates 6, 7 is equal to b, that is, b = c + d. The thickness a of the elastic strip 8 has a value not exceeding the total thickness of the plates 6, 7, i.e., a ≤ b.

In the area of the hole 5, an internal flange (not shown) can be made as an external flange 9.

The gasket 8 may have a thickness of 1-5 mm. Also, to ensure the required thickness, the wear-resistant removable absorber 4 can be multilayer, that is, contain n layers of elastic gaskets 8 and n + 1 metal plates 6, 7 connected to it, where n = 1-5. When this ratio also holds a _s ≤b _s, where a _s - total thickness of the spacers 8 n, b _s - total thickness of the n + 1 metal plates 6, 7 are connected with elastic gaskets.

The plates 6, 7 and / or the elastic gasket 8 may have the same or variable thickness, depending on the configuration of the zone in which the wear-resistant removable absorber is installed.

When cars move in the mating zone of adjacent rubbing parts of the thrust bearing 3 and the car’s firing pin (not shown), high-frequency vibrations occur, which are the main cause of wear of rubbing surfaces. To reduce the wear of the marked elements, a wear-resistant removable absorber is used 4. The presence of an elastic gasket 8 of small thickness in it can effectively reduce the high-frequency vibrations of the contacting surfaces. This increases the wear resistance of the interacting surfaces of the wear-resistant removable absorber 4 and the parts between which it is installed.

Due to the use of elastic gaskets 8 of small thickness, the wear-resistant removable absorber has little effect on the mutual position of adjacent surfaces between which it is installed. Therefore, wear-resistant removable absorbers can be used both in newly created carts and for the modernization of carts in operation, for example, type 18-100, 18-578. At the same time, the small thickness of wear-resistant removable absorbers allows them to be used in trolleys without changing their design within the tolerances of normative documentation for the manufacture, repair and maintenance of trolleys.

The use of the proposed wear-resistant removable absorber in the thrust unit of the new bogies and the modernization of the bogies in operation can improve their driving performance and reduce wear on rubbing surfaces.

Claims (3)

1. Wear-resistant removable vibration absorber of the thrust bearing of a railway carriage trolley made in the form of a bowl repeating the shape of the thrust bearing, with a hole in the center, consisting of an elastic strip with a thickness of "a" and metal plates firmly connected to it with a total thickness of "b", characterized in that the thickness "a" of the elastic strip is less than or equal to the total thickness "in" of the metal plates. 2. The wear-resistant removable absorber according to claim 1, characterized in that the block consists of n elastic plates and n + 1 metal plates, with a≤v, a n = 1 ... 5. 3. Wear-resistant removable absorber according to claims 1 and 2, characterized in that the thickness of the elastic strip "a" is 1-5 mm.