RU197240U1 - SIDE FRAME OF THE TRUCK OF A CAR - Google Patents

Abstract

The utility model relates to rolling stock of railway transport and can be used in the construction of biaxial bogies of freight cars. The technical result consists in increasing the manufacturability of manufacturing while increasing the reliability of the side frame of a freight wagon trolley by improving its strength properties. According to a utility model, in the side frame of a freight wagon trolley containing upper (1) and lower (2) horizontal belts interconnected by vertical columns (3), and inclined belts (5), paired with the lower horizontal belt (2), on the site the inner surface of the upper wall (5.1) of the inclined belts (5) at the interface between the specified wall and the wall of the corresponding vertical column, local tides-thickenings (9) are made. 3 s.p. f-ly, 4 ill.

Description

The technical field to which the utility model relates.

The utility model relates to rolling stock of railway transport and can be used in the construction of biaxial bogies of freight cars.

State of the art

There are various technical solutions in this area.

Known patent for utility model RU No. 1155315 Ul (B61F 5/52, publ. 04/27/2012). The side frame of the freight car truck, made in the form of a steel casting, consists of upper and lower horizontal belts interconnected by vertical columns made with a vertical tide on the inner side and two holes in the middle part for installing the friction bar, forming together with horizontal belts a spring an aperture, in the lower part of which there is a supporting surface with bonks for installing springs and limiters against displacement of the springs, inclined belts, conjugated with the lower belt som and horizontal supporting sections of the jaw openings having external and internal supporting stops, the inner guide of the jaw opening with an open section on the outside, the observation window and the upper horizontal belt in the area of the observation window of the box section. On the inner surface of the lower shelf of the lower horizontal zone between the vertical walls, thickenings 10-20 mm high are made in the form of cylinder sectors with a generatrix transverse to the side frame.

In addition, a patent is known for utility model RU No. 174094 U1 (B61F 5/00, published 02.10.2017), according to which the side frame contains an upper belt with consoles forming axle openings with internal and external corners, a lower belt with a support platform for spring set connecting the upper and lower belts vertical and inclined belts. In the zones of the inner corners of the axle openings on the inner surface of the side wall of the upper belt, tides are made. Tides-thickenings are made in the form of extended sections located between the junctions of the lower shelves of the upper and inclined belts and the upper shelf of the upper belt.

Also known patent for utility model RU No. 102577 (B61F 5/52, publ. 03/10/2011), which is the closest to the proposed solution and adopted as a prototype. According to this patent, the side frame of a freight car truck contains upper and lower horizontal belts connected to each other by two side walls and vertical columns, forming together with horizontal belts a spring opening, in the lower part of which there is a supporting surface, inclined sections conjugated with the lower belt and horizontal supporting platforms of axle box openings formed by external and internal jaw guides, technological windows formed by the inner surface of inclined wall, vertical columns and upper horizontal belt. The side walls in the area of the inner corner of the jaw opening are made with a semicircular thickening centered at the apex of the corner and a thickness equal to the thickness of the horizontal supporting shelf of the jaw opening. In the annular zone, the wall thickness is gradually decreasing to a value equal to the total thickness of the side walls, the surfaces of the support stops in the jaw opening are made cylindrical with a vertical generatrix, the vertical wall of the vertical column is mated with the upper shelf of the lower belt in radius.

The technical problem inherent in the known constructions is that the analogues have low fatigue strength at the locations of stress concentrators, which include, in particular, the corner zones at the transition points of the lower belt to the inclined belt, which are the places of mating of several walls.

Utility Model Disclosure

The technical result achieved by using the proposed utility model is to increase the manufacturability of manufacturing while increasing the reliability of the side frame of the freight wagon trolley by improving its strength properties.

This technical result is achieved by the fact that in the side frame of the freight wagon trolley, comprising upper and lower horizontal belts interconnected by vertical columns, and inclined belts paired with the lower horizontal belt, it is proposed on the inner surfaces of the upper walls of the inclined belts at the interface of the upper the walls of the inclined belts with the walls of the vertical columns forming the spring opening, made local tides-thickenings with a width h from 55 to 65 mm, a length of 1 from 130 mm to 150 mm and thicknesses hydrochloric s from 12 to 20 mm with an angle of inclination α to the respective upper wall in the range of 2 to 10 °.

The application of the proposed local tides-thickenings allows you to create an additional melt volume in the wall of the inclined belt to increase the profit zone, which, in turn, improves the manufacturability and improves the quality of the side frame casting by reducing the likelihood of shrinkage casting defects as a result of power supply the zone of mating of the walls located on the opposite side from the supply of this node arrived. An additional effect of this change in the design of the walls is to improve the strength properties in the loaded sections of the transitions of the upper part belt.

Brief Description of the Drawings

The essence of the proposed utility model is illustrated by the following graphic material:

FIG. 1, which shows a General view of the side frame of the truck wagon;

FIG. 2, which shows a sectional view of a portion of a side frame with a tide,

FIG. 3, which shows a sectional view of the interface between the lower horizontal belt and the inclined belts along line AA,

FIG. 4, which shows a perspective view of a portion of the side frame with the tide, where:

1- upper horizontal belt;

2- lower horizontal belt;

3- vertical column;

4- spring opening;

5- inclined belt;

5.1 - the upper wall of the inclined belt;

6- technological window;

7-jaw guide;

8 - horizontal reference platform axle box.

9 - tide-thickening;

Utility Model Implementation

The side frame of the freight car truck contains the upper 1 and lower 2 horizontal belts, interconnected by two vertical columns 3, forming together with horizontal belts a spring aperture 4, in the lower part of which there is a supporting surface for installing springs, and inclined belts 5, paired with the lower belt 2 and horizontal supporting platforms 8 axle box openings formed by the outer and inner jaw guides 7. The side frame also contains technological windows 6 formed by vertical l columns 3, the upper horizontal belt 1, as well as inclined belts 5.

As shown in FIG. 2 and FIG. 3, on the portion of the inner surface of the upper wall 5.1 of each of the inclined belts 5 at the interface between the specified upper wall 5.1 of the inclined belts 5 and the wall of the corresponding adjacent vertical column 3 facing the spring opening 4, a local tide-thickening 9 is made.

Local tides-thickenings 9 have a width h from 55 to 65 mm, a length of 1 from 130 to 150 mm, and a thickness s from 12 to 20 mm with an angle α of inclination to the corresponding upper wall 5.1 in the range from 2 to 10 °. The results of the calculation of shrinkage defects in the studied area showed that when the proposed tides-thickenings 9 with the indicated parameters are used in the design, the appearance of conditional volumes of metal of reduced density (discontinuities) above a certain level is unlikely, while the implementation of tides does not cause an excessive increase in the material consumption of manufacturing the side frame.

The use of tides-thickenings proposed in accordance with this utility model in the mating zone of the upper wall 5.1 of inclined belts 5 with the walls of the vertical columns 3 can improve the quality of casting of the side frame due to a significant reduction in the likelihood of casting defects of shrinkage as a result of power supply to the mating zone of the walls located on the opposite side of the supply of this node arrived.

Thus, the side frame of the wagon of the freight car according to the proposed solution has improved technical characteristics, in particular, has increased reliability compared to known structures, in particular, increased fatigue strength at the locations of stress concentrators, thereby eliminating the disadvantages of analogues.

Claims (4)

1. The lateral frame of the freight car truck, comprising upper and lower horizontal belts interconnected by vertical columns, and inclined belts mated to the lower horizontal belt, characterized in that on a portion of the inner surface of the upper wall of each of the inclined belts at the interface of the specified wall with the wall of the corresponding vertical column, a local tide-thickening is made. 2. The side frame according to claim 1, characterized in that the local tides and thickenings are made from 55 to 65 mm wide. 3. The side frame according to claim 1, characterized in that the local tides-thickenings are made in lengths from 130 mm to 150 mm. 4. The side frame according to claim 1, characterized in that the local tides-thickenings are made from 12 mm to 20 mm thick and with a slope angle to the corresponding upper wall in the range from 2 to 10 °.

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