RU211469U1 - FREIGHT CAR FRAME - Google Patents

Abstract

The utility model relates to the design of the pivot beam of a freight car frame. The freight car frame contains a center beam (1), side beams (2) associated with it, pivot beams (3), end beams (4) and intermediate beams (5). On the pivot beams (3) the lower sheets (6) are fixed, made at their ends with protruding connecting parts (6.1), by which the lower sheets (6) are fixed on the side beams (2). On the indicated protruding connecting parts (6.1), symmetrically to the longitudinal axis О–О of the lower sheets (6), at a distance L, control-based technological elements are made in the form of grooves (6.2) or in the form of through holes (6.4). The technical result of the utility model is to improve the manufacturability of the freight car frame. 3 w.p. f-ly, 4 ill.

Description

The utility model relates to the design of the frame of a freight railway car, namely to the design of the pivot beam.

A freight car frame is known, comprising a center beam, side beams connected to the center beam by pivot beams, end and intermediate beams, pivot beams include bottom sheets fixed at their ends to the side beams, while the ends of the bottom sheets are made with protruding connecting parts, see RU 199815, B61F 1/02, B61F 1/08, publ. 09/21/2020 (prototype).

The technical problem characteristic of this freight car frame is the low manufacturability of its manufacture, caused by the difficulty of orienting and controlling the position of the bottom sheets relative to the longitudinal axis of the pivot beam due to the absence of any straight edges on the bottom sheets that could serve as a measuring base for positioning and fixing the bottom sheet on the pivot beam relative to its longitudinal axis.

The technical result of the proposed utility model is to improve the manufacturability of the frame of a freight car.

The specified technical result is achieved by a freight car frame containing a center beam, side beams connected to the center beam by pivot beams, end and intermediate beams, the pivot beams include bottom sheets fixed at their ends to the side beams, while the ends of the bottom sheets are made with protruding connecting parts , on the protruding connecting parts of the lower sheets of the pivot beams, control-based technological elements are made, used in positioning the lower sheets when they are fixed;

control-based technological elements can be made in the form of grooves on the end edges of the protruding connecting parts of the lower sheets of the pivot beams;

grooves can be made through with a width of 5 to 30 mm and a length of 5 to 25 mm;

control-based technological elements can be made in the form of through holes with a diameter of 5 to 36 mm, located indented from the end edges of the protruding connecting parts of the lower sheets of the pivot beams.

The claimed utility model differs from the prototype in that on the protruding connecting parts of the lower sheets of the pivot beams, control-based technological elements are used for positioning the lower sheets when they are fixed;

control-based technological elements are made in the form of grooves on the end edges of the protruding connecting parts;

the grooves are made through with a width of 5 to 30 mm and a length of 5 to 25 mm;

control-based technological elements are made in the form of through holes with a diameter of 5 to 36 mm, located indented from the end edges of the protruding connecting parts.

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 frame, general view, isometric projection;

in FIG. 2 - pivot assembly, other details are conventionally not shown, isometric view;

in FIG. 3 - pivot assembly, bottom view;

in FIG. 4 - an example of the execution of the end of the lower sheet of the pivot beam, local view.

The freight car frame contains a center beam 1 (Fig. 1), side beams 2 connected with the center beam 1, pivot beams 3 (Fig. 2), end beams 4 and intermediate beams 5. On the pivot beams 3, bottom sheets 6 are fixed, made on at their ends with protruding connecting parts 6.1 (Fig. 3), with which the sheets 6 are fixed on the side beams 2.

On these protruding connecting parts 6.1 at a mutual distance L, control-based technological elements are made, for example, in the form of grooves 6.2, made on the end edges 6.3 of the protruding connecting parts 6.1 (Fig. 3), or in the form of through holes 6.4, located indented from end edges 6.3 (Fig. 4).

Grooves 6.2 can be made through with a width of 5 to 30 mm and a length of 5 to 25 mm, through holes 6.4 can be made with a diameter of 5 to 36 mm, the distance L can be made from 200 to 300 mm. Making grooves 6.2 less than 5 mm wide makes it difficult to work with grooves 6.2 due to their small size, making the width of these grooves 6.2 more than 30 mm can weaken the strength of the protruding connecting parts 6.1 of the bottom sheet 6. Making the diameter of through holes 6.4 less than 5 mm makes it difficult to work with these holes due to their small size, the implementation of a diameter of more than 36 mm can weaken the strength of the protruding connecting parts 6.1 of the bottom sheet 6. The distance L from 200 to 300 mm is determined by the specific dimensions of the bottom sheet 6 and is selected depending on the technological needs in the production of the freight car frame.

The utility model is used as follows.

For high-quality assembly of the frame of a freight car, it is necessary to accurately mutually position its constituent elements before they are connected by a welding seam, including the position of the bottom sheet 6 on the pivot beam 3 within the specified error. Due to the fact that in order to reduce internal stresses, the bottom sheets 6 are made in the form of a part with smoothly mating edges and without straight sections that can serve as a measuring base, the operation of orienting and controlling the relative position of the bottom sheet 6 on the pivot beam 3 is difficult. the operation of positioning the bottom sheet 6 on the pivot beam 3 on the protruding connecting parts 6.1, as the widest and allowing to place at the greatest distance L, symmetrically to the longitudinal axis O–O of the bottom sheet 6, is performed by control-based technological elements, for example, in the form of grooves 6.2 or through holes 6.4. These control-based technological elements are used as a measuring base for accurate positioning of the longitudinal axis O-O of the bottom sheet 6 on the longitudinal axis of the pivot beam 3. Due to their small size, the control-based technological elements do not reduce the strength and rigidity of the bottom sheet 6. The specified control-based technological elements made in the form of grooves 6.2 can also be used as breaks in welds on the end edges 6.3 of the protruding connecting parts 6.1 in order to create discrete isolated sections of internal mechanical stresses, as well as to increase the manufacturability of the assembly operation of applying welds of shortened length. If necessary, these control-based technological elements after fixing the bottom sheet 6 on the pivot beam 3 can be welded.

Thus, the use of the proposed control-based technological elements on the pivot beam can significantly increase the manufacturability of the freight car frame.

Claims (4)

1. A frame of a freight car containing a center beam, side beams connected to the center beam by pivot beams, end and intermediate beams, pivot beams include bottom sheets, fixed at their ends to the side beams, while the ends of the bottom sheets are made with protruding connecting parts, differing by the fact that control-based technological elements are made on the protruding connecting parts of the lower sheets of the pivot beams. 2. Freight car frame according to claim 1, characterized in that the control-based technological elements are made in the form of grooves on the end edges of the protruding connecting parts of the lower sheets of the pivot beams. 3. Freight car frame according to claim 2, characterized in that the grooves are made through with a width of 5 to 30 mm and a length of 5 to 25 mm. 4. Freight car frame according to claim 1, characterized in that the control-based technological elements are made in the form of through holes with a diameter of 5 to 36 mm, located indented from the end edges of the protruding connecting parts of the lower sheets of the pivot beams.

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