RU204152U1 - AIR RESERVOIR - Google Patents

Abstract

The utility model relates to the braking mechanisms of railway transport, in particular to the air tanks of railway cars. An air tank is proposed, containing a shell (5), a blind bottom (8), a bottom (2) with an opening and a fitting (1), and the fitting (1) has a flange (10) and is located in the opening of the bottom (2) with an opening so, to fit against the inner surface of the bottom section (2) with the hole. The inner surface of the bottom section (2) with the hole and the flange (10) of the fitting (1) at the point of contact with the inner surface of the bottom section (2) with the hole correspond to each other in shape to ensure mating.

Description

FIELD OF TECHNOLOGY

This utility model relates to the field of pneumatic braking equipment for railway transport, in particular for freight and passenger railway cars. More specifically, the present invention relates to air reservoirs, also called spare (auxiliary) reservoirs of pneumatic braking equipment of railway cars.

LEVEL OF TECHNOLOGY

An air reservoir for brakes of freight and passenger railroad cars is known from the prior art according to GOST R 52400-2005. The air reservoir contains a cylindrical shell, a bottom with an opening in which a bottom fitting, a blind bottom, backing rings and a shell fitting installed in an opening in the lower part of the cylindrical shell are installed. The bottom union is made in the form of a hollow cylinder with an internal thread and is designed to connect the air reservoir with the air distributor of the railway car brake system by means of a pipeline. The bottom fitting is installed in the bottom hole and is connected to the bottom by welded seams made from the inner and outer sides.

However, there is a technical problem, which consists in a loose fit of the choke flange to the inner surface of the bottom, which reduces the load-bearing capacity of the structure and increases the possibility of leaks when making poor-quality welds of the choke and bottom welding.

From document RU 2375217, an air tank for an automatic brake is known, containing a shell, a bottom with a union welded to it, a blind bottom and backing rings, and the fitting is made with a flange facing the bottom and welded to it with two seams: the flange is to the inner surface of the bottom, and with the nozzle body - to the outer surface, while due to the difference in the diameters of the flange and the nozzle body, the welded seams of their welding to the bottom are located in different sections.

However, this technical solution does not solve this problem, since the flat flange of the fitting does not fit tightly to the bottom with the hole due to the fact that when the flat flange is connected to the convex inner surface of the bottom, a gap remains between the two welded seams. Under increased operating loads, leakage is possible through this place.

From the prior art document RU 160560 is known, which discloses an air tank containing a shell, a blank bottom, a bottom with an opening for a fitting and a fitting, in which the fitting is made with a stepped flange, which is welded to the bottom with two seams: the edge of the flange to the inner surface of the bottom and the edge of the step flange to the outer surface of the bottom.

However, making the choke flange a stepped one does not in itself solve the indicated problem of a loose connection, since the bottom at the connection point does not follow the shape of the flange.

From the prior art document RU No. 164209 is also known, which discloses an air reservoir containing a cylindrical shell, a blank bottom, a bottom with a fitting, connected by means of a flange. The bottom nozzle is butt-welded to the flange made in the form of a truncated cone and welded to the bottom by two seams: a flange mirror to the inner bottom surface and the conical flange surface to the outer bottom surface, as a result of which the strength characteristics of the connection of the nozzle to the tank bottom are increased. This technical one was chosen as a prototype.

The known solution provides a more reliable connection, but does not solve the specified technical problem, since the flange of the choke has a conical shape, which still does not provide the most snug fit to the convex inner surface of the bottom.

DISCLOSURE OF THE USEFUL MODEL

The specified technical problem is solved due to the fact that an air reservoir is proposed, which contains a shell, a blank bottom, a bottom with an opening and a fitting. The fitting has a flange and is located in the opening of the bottom with a hole so as to adjoin the inner surface of the section of the bottom with an opening. The inner surface of the bottom section with the hole and the flange of the fitting at the point of abutment to the inner surface of the bottom section with the hole correspond to each other in shape to ensure mating.

The technical result, the achievement of which is provided by the utility model, is to provide a better connection density (tightness) of the fitting and the bottom with the hole.

In a preferred embodiment, the inner surface of the bottom section with a hole and the flange of the fitting at the point of contact with the inner surface of the bottom section are flat.

In yet another preferred embodiment, the diameter of the inner surface of the bottom portion with the opening is from 1.1 to 1.5 times the diameter of the flange of the fitting at the point of contact with the inner surface of the bottom portion with the opening. It was found that the specified ratio of the diameters of the inner surface of the section of the bottom with a hole and the flange of the choke also provides a better tightness of the connection of the choke and the bottom with the hole.

In another preferred embodiment, the choke flange is tapered.

In another preferred embodiment, the choke flange is stepped.

BRIEF DESCRIPTION OF DRAWINGS

The utility model is described below using an example of its implementation with links to the accompanying drawings, in which:

FIG. 1 shows a side view of an air reservoir;

FIG. 2 shows a side view of the bottom of an air reservoir with a bottom fitting.

IMPLEMENTATION OF THE USEFUL MODEL

In the preferred embodiment illustrated in FIG. 1-2, the air tank contains a shell 5, a blind bottom 8, a bottom 2 with an opening, backing rings 3, 4, a shell fitting 7, a plug 6, a bottom fitting 1. In the illustrated example of FIG. 1-2 flange 10 of the bottom nozzle 1 has a stepped shape, while the flange is made flat at the point of abutment to the inner surface of the bottom section 2 with a hole, and the inner surface of the bottom section 2 with a hole has a corresponding flat shape at the place where the flange 10 of the bottom nozzle 1 adjoins bottom 2 with a hole.

In the illustrated example of FIG. 1-2 fitting 1 is located in the bottom hole from the inside and welded to the bottom with two seams: the flat edge of the flange to the inner surface of the bottom and the edge of the flange step to the outer surface of the bottom.

Although in the case shown in FIG. 1-2 embodiment of the bottom connection 1 is shown made with a stepped flange 10, any other connection known from the prior art with a flange of a different surface shape, for example, a connection with a flange with a tapered surface, can be used. In this case, the flat inner surface of the bottom portion with the hole follows the shape of the fitting at the point of abutment with the specified inner surface of the bottom portion with the hole. In the shown example of implementation, the surface of the flange (10) of the fitting and the inner surface of the section of the bottom (2) with the hole are located at an angle of 90 degrees to the longitudinal axis of the tank. It should be noted that according to the present invention, the repetition of the shape of the flange surface of the choke at the point of abutment to the inner surface of the bottom section with a hole also means that when the surface of the choke flange is made at the point of contact with the inner surface of the bottom section at an angle, i.e. at an angle different from 90 degrees to the longitudinal axis of the tank, the flat inner surface of the bottom section with the hole is also made at an inclination equal to the angle of inclination of the flange surface of the fitting at the point of contact, to ensure a tight sealed fit of the bottom fitting to the bottom with the hole.

According to the given example of implementation, the diameter A of the inner surface of the bottom section 2 with the hole is not less than 1.1 and not more than 1.5 of the diameter A1 of the flange 10 of the fitting 1 at the point of contact with the inner surface of the bottom section (2) with the hole.

With a value of the diameter A of the flat part of the bottom 2 with an opening less than 1.1 × A1, a tight fit of the flange 10 and the bottom 2 with the hole will not be ensured. With a value of the diameter A of the flat part of the bottom 2 with an opening more than 1.5 × A1, the standard value of the volume of the air reservoir will not be provided.

Thus, in order to achieve the best fit of the flange 10 and the bottom 2 with the hole while ensuring the standard value of the volume of the air reservoir, the diameter A of the flat part of the bottom 2 with the hole should be from 1.1 × A1 to 1.5 × A1.

When assembling the tank, due to the abutment of the flange surfaces of the nozzle 1 of the bottom and the bottom 2 with the hole, a tight tight connection of the nozzle with the bottom of the tank is ensured. Simplification of the tank assembly is also achieved, i. E. acceleration of the assembly process due to the absence of a gap at the place of abutment of the flat surface of the flange 10 to the flat inner surface of the bottom section 2 before welding. When operating the tank as part of the vehicle's autobrake, the load from the bottom nozzle 1 is transmitted evenly over the entire contact surface on the bottom 2 with a hole. Thus, the strength and reliability of the connection of the fitting 1 with the bottom 2 is additionally increased without further increasing the thickness of the walls of the bottom 2 and the reliability of the vehicle's autobrake operation is ensured by reducing the likelihood of leakage from the air reservoir.

The claimed utility model in accordance with the disclosed example of implementation has been tested as a prototype of an air carriage tank, manufactured in an industrial environment and is intended for industrial use, namely, in railway cars.

Claims (5)

1. An air reservoir containing a shell (5), a blind bottom (8), a bottom (2) with an opening and a fitting (1), and the fitting (1) has a flange (10) and is located in the opening of the bottom (2) with an opening so to adjoin the inner surface of the bottom section (2) with a hole, characterized in that the inner surface of the bottom section (2) with a hole and the flange (10) of the fitting (1) at the point of contact with the inner surface of the bottom section (2) with a hole correspond to to each other in shape with the provision of conjugation. 2. Air reservoir according to claim 1, characterized in that the inner surface of the bottom section (2) with the hole and the flange (10) of the fitting (1) at the point of contact with the inner surface of the bottom section (2) with the hole are made flat. 3. Air reservoir according to claim 1, characterized in that the diameter A of the inner surface of the bottom section (2) with the hole is from 1.1 to 1.5 times the A1 diameter of the flange (10) of the fitting (1) at the point of contact with the inner surface of the section bottoms (2) with a hole. 4. Air reservoir according to any one of paragraphs. 1-3, characterized in that the flange (10) of the union (1) is made conical. 5. An air reservoir according to any one of paragraphs. 1-3, characterized in that the flange (10) of the union (1) has a stepped shape.

Images