RU214176U1 - FREIGHT CAR FRAME - Google Patents

Abstract

The utility model relates to the field of railway technology, in particular to the frames of freight cars used for the transport of various goods, for example, large-capacity containers. The frame (1) of a freight car contains a center beam (2), transverse beams (3). The spinal beam (2) is made of side walls (2.1), upper flange (2.2), lower flange (2.3). In the inner longitudinal cavity of the main beam (2) there are transverse stiffening elements made in the form of upper and lower segments. The upper segments of the transverse stiffeners are made in the form of transverse ribs (4) connected by their ends to the side walls (2.1) and by their upper edges to the upper flange (2.2) of the main beam (2), while the transverse ribs (4) are placed in sections fixing the transverse beams (3) on the main beam (2). The lower segments of the transverse stiffeners are made in the form of transverse ribs (5). The transverse ribs (5) are connected by their ends to the side walls (2.1) of the main beam (2), by their lower edges they are connected to a horizontal shelf (5.1) rigidly connecting the indicated transverse ribs (5). The technical result consists in increasing the strength of the freight car frame. 6 w.p. f-ly, 6 ill.

Description

The utility model relates to the field of railway engineering, in particular to the frames of freight cars used for the transport of various goods, for example, large-capacity containers.

A well-known frame of a freight car containing a center beam, cross beams, the center beam is made of side walls, an upper shelf, a lower shelf, forming an internal longitudinal cavity in which transverse stiffeners are installed in the form of upper and lower segments, see RU 176568, B61F 1 /02, publ. 01/23/2018 (prototype).

The technical problem of the specified frame of the freight car is the lack of strength of the center sill due to the underdeveloped system of cross-links in the internal cavity of the sill.

The technical result of the proposed utility model is to increase the strength of the freight car frame.

The specified technical result is achieved by a freight car frame containing a center beam, transverse beams, the center beam is made of side walls, an upper shelf, a lower shelf, forming an internal longitudinal cavity in which transverse stiffeners are installed in the form of upper segments and lower segments, the upper segments are made in the form of transverse ribs installed in the areas of fastening on the main beam of the transverse beams and connected by their ends to the side walls of the main beam, the upper edges - to the upper shelf of the main beam, the lower segments are fixed under the upper segments and are made in the form of transverse ribs, also connected by their ends with side walls of the main beam, lower edges - with horizontal shelves, rigidly connecting these transverse ribs;

the upper segments and lower segments can be fixed in the inner longitudinal cavity of the main beam symmetrically with respect to the respective vertical planes of symmetry;

the transverse ribs of the upper and lower segments can be set at angles α, maintained in the range from 50° to 130° from the horizontal;

horizontal shelves of the lower segments can be made with holes;

the end edges of the transverse ribs of the upper and lower segments can be made with a height H greater than the height h of their middle sections, and the height H is from 1.2 to 1.5 height h;

the height h of the middle sections of the transverse ribs of the lower segments is made in the range from 0.3 to 0.7 of the width S of the horizontal shelves;

the lower segments can be mounted at a height L, measured from the lower flange of the main beam to the horizontal shelf, while the height L is from 0.05 to 0.6 of the height M of the main beam.

The claimed utility model differs from the prototype in that

the upper segments are made in the form of transverse ribs installed in the areas of fastening on the main beam of the transverse beams and connected by their ends to the side walls of the main beam, the upper edges - to the upper shelf of the main beam, the lower segments are fixed under the upper segments and are made in the form of transverse ribs, also connected at their ends to the side walls of the main beam, the lower edges - with horizontal shelves, rigidly connecting these transverse ribs;

the upper segments and lower segments can be fixed in the inner longitudinal cavity of the main beam symmetrically with respect to the respective vertical planes of symmetry;

the transverse ribs of the upper and lower segments can be set at angles α, maintained in the range from 50° to 130° from the horizontal;

horizontal shelves of the lower segments can be made with holes;

the end edges of the transverse ribs of the upper and lower segments can be made with a height H greater than the height h of their middle sections, and the height H is from 1.2 to 1.5 height h;

the height h of the middle sections of the transverse ribs of the lower segments is made in the range from 0.3 to 0.7 of the width S of the horizontal shelves;

the lower segments can be mounted at a height L, measured from the lower flange of the main beam to the horizontal shelf, while the height L is from 0.05 to 0.6 of the height M of the main beam.

Such differences give grounds to assert that the proposed technical solution complies with the criterion of patentability of a utility model - novelty.

The utility model is shown in the drawings, where:

in fig. 1 - freight car with the proposed frame, general view;

in fig. 2 - the same, top view;

in fig. 3 - section A-A in Fig. one;

in fig. 4 - section B-B in Fig. 3;

in fig. 5 - the lower segment of the transverse stiffener assembly, isometric view;

in fig. 6 - cross-section of the main beam at the installation site of the upper and lower segments of the transverse stiffener, local view, isometric projection.

The frame 1 (Fig. 1, 2) of a freight car contains a center beam 2, transverse beams 3. The center beam 2 (Fig. 3, 4) is made of side walls 2.1, an upper shelf 2.2, a lower shelf 2.3. These elements form an internal longitudinal cavity in the main beam 2. In the internal longitudinal cavity of the main beam 2, transverse stiffeners are installed, each made in the form of upper and lower segments.

The upper segments of each transverse stiffening element are made in the form of a pair of transverse ribs 4, connected by their ends to the side walls 2.1 and their upper edges - with the upper shelf 2.2 of the main beam 2, while the transverse ribs 4 are placed in the areas of fastening of the transverse beams 3 on the main beam 2 The lower segments of each transverse stiffening element are made in the form of a pair of transverse ribs 5 fixed under the corresponding pair of transverse ribs 4 (Fig. 5, 6). The transverse ribs 5 are connected at their ends to the side walls 2.1 of the main beam 2, the lower edges are connected to the horizontal shelf 5.1, which rigidly connects a pair of said transverse ribs 5.

The upper segments and lower segments can be fixed mutually symmetrically with respect to the vertical plane of symmetry.

Transverse ribs 4, 5 of the upper segments and lower segments to increase the strength of the frame 1 of the freight car in the longitudinal direction can be set at angles α maintained in the range from 50° to 130° from the horizontal.

Angles α provide the most optimal stiffness of the frame 1. If the angles α go beyond the specified upper and lower limit values, the transverse stiffeners will not provide the optimal combination of stiffness in the vertical and horizontal planes.

Horizontal shelves 5.1 transverse ribs 5 can be made with holes 5.2.

The end edges 4.1, 5.3 of the transverse ribs 4, 5 can be made with a height H greater than the height h of their middle sections, and the height H can be made from 1.2 to 1.5 of the height of their middle sections. A more developed length of the end edges of said ribs 4, 5 makes it possible to obtain a greater length of welding seams, reduce internal mechanical stresses arising during the operation of a freight car, and increase the strength of a freight car.

The height h of the middle sections of the transverse ribs 5 can be made in the range from 0.3 to 0.7 of the width S of the horizontal shelf 5.1.

The transverse ribs 5 of the lower segments can be installed at a height L, measured from the lower flange 2.3 of the main beam 2 to the corresponding horizontal shelf 5.1, while the height L is from 0.05 to 0.6 of the height M of the main beam 2.

The height h of the middle sections of the transverse ribs 5 of the lower segments of the transverse stiffeners can be made in the range from 0.3 to 0.7 of the width S of the horizontal flange 5.1. If this ratio is less than 0.3, underdeveloped cross sections of the lower segments will be formed. Making this ratio greater than 0.7 will increase the weight of the lower segments without significantly increasing their strength and stiffness.

As the most optimal position relative to the forces perceived by the main beam 2 from the transverse beams 3, the lower segments are installed at a height L, measured from the bottom shelf 2.3 of the main beam 2 to the horizontal shelf 5.2, while the height L can be from 0.05 to 0.6 of the height M of the spinal beam 2.

When using a freight car to transport cargo, for example, large-capacity containers mounted on the cross beams 3, these cross beams 3 are subjected to a large static and dynamic load. The specified load from the transverse beams 3 is distributed on the side walls 2.1 of the main beam 2 on the transverse stiffeners, made in the form of upper and lower segments, which perceive and distribute internal mechanical stresses arising from loads on the transverse beams 3, reducing their extreme values.

Thus, the proposed design of the freight car frame 1 provides an increase in the strength of the freight car frame.

Claims (7)

1. The frame of a freight car, containing a center beam and cross beams, the center beam is made of side walls, an upper shelf, a lower shelf, forming an internal longitudinal cavity in which transverse stiffeners are installed in the form of upper segments and lower segments, characterized in that the upper the segments are made in the form of transverse ribs installed in the areas of fastening on the main beam of the transverse beams and connected by their ends to the side walls of the main beam, and by their upper edges - to the upper shelf of the main beam, the lower segments are fixed under the upper segments and are made in the form of transverse ribs, also connected with their ends to the side walls of the main beam, and the lower edges - with horizontal shelves, rigidly connecting the indicated transverse ribs. 2. Freight car frame according to claim 1, characterized in that the upper segments and lower segments are fixed in the inner longitudinal cavity of the center beam symmetrically with respect to the corresponding vertical planes of symmetry. 3. Freight car frame according to claim 1, characterized in that the transverse ribs of the upper and lower segments are set at angles α, maintained in the range from 50° to 130° from the horizontal. 4. Freight car frame according to claim 1, characterized in that the horizontal shelves of the lower segments are made with holes. 5. Freight car frame according to claim 1, characterized in that the end edges of the transverse ribs of the upper and lower segments are made with a height H greater than the height h of their middle sections, and the height H is from 1.2 to 1.5 height h. 6. Freight car frame according to claim 1, characterized in that the height h of the middle sections of the transverse ribs of the lower segments is made in the range from 0.3 to 0.7 of the width S of the horizontal shelves. 7. Freight car frame according to claim 1, characterized in that the lower segments are installed at a height L, measured from the lower shelf of the center beam to the horizontal shelf, while the height L is from 0.05 to 0.6 height M of the center beam.

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