RU210063U1 - RAILWAY VEHICLE CENTER BEAM - Google Patents

Abstract

The proposed utility model relates to the center beams of the frames of railway vehicles, in particular freight cars, for example, platform cars. The technical result consists in reducing the mass of the railway vehicle center beam, which has a widening section in the central part. The technical result is achieved due to the fact that the main beam (1) includes a wall (4) and has a middle section (6), which is a widening section, while in the wall (4) a plurality of holes (9) are made located in the middle section (6) and on the neutral line (10) of the main beam (1), and the distance S between them is at least 120 mm. 3 w.p. f-ly, 3 ill.

Description

Field of technology to which the utility model belongs

[0001] The proposed utility model relates to the center beams of the frames of railway vehicles, in particular freight cars, for example, flat cars.

State of the art

[0002] From the prior art, the center beam of the platform car 13-7133 is known, see, for example, https://www.kvsz.com/index.php/ru/produktsiya/gruzovoe-vagonostroenie/ vagony-platformy/item/2366 -vagon-platforma-model-13-7133-i-13-7133-01, including a wall and having a middle section, which is a widening section and contains two variable height segments and a constant height segment located between the variable height segments.

[0003] From the prior art, a center beam is known, disclosed in the Russian patent No. 186435 for a utility model, publ. 01/21/2019, taken as the closest analogue and including a wall and having a middle section, which is a widening section, while a lot of holes are made in the wall, located in the middle section and on the neutral line of the main beam.

[0004] The disadvantage of the known devices is their increased weight.

[0005] The technical problem is to create a device that eliminates the disadvantages of analogues.

Disclosure of the essence of the utility model

[0006] The technical result consists in reducing the mass of the railway vehicle center beam, which has a broadening section in the middle part, while maintaining its strength.

[0007] The technical result is achieved due to the fact that the main beam includes a wall and has a middle section, which is a widening section, while the wall has a plurality of holes located in the middle section and on the neutral line of the main beam and the distance S between which is at least 120 mm.

[0008] In an additional aspect, the proposed technical solution is characterized by the fact that the centers of the holes are located on the neutral line.

[0009] In an additional aspect, the proposed technical solution is characterized in that one of the diameters of each hole is located along the neutral line.

[0010] In an additional aspect, the proposed technical solution is characterized in that the distance S between the holes is not more than 1100 mm.

Brief description of the drawings

[0011] An embodiment of the proposed technical solution is characterized by a drawing, where:

[0012] FIG. 1 shows its general view,

[0013] FIG. 2 shows its side view,

[0014] FIG. 3 shows the dependence of the equivalent stresses arising in the main beam on the distance between the holes.

Implementation of the utility model

[0015] FIG. 1 shows a general view of the center beam 1 of the platform car frame. The spinal beam 1 is made symmetrical, has a box-shaped section and includes an upper shelf 2, oriented horizontally, two lower shelves 3, oriented horizontally, and two side walls 4, oriented vertically and connected to the upper shelf 2 and the lower shelves 3 by means of at least one known from the prior art assembly operation, for example, welding.

[0016] FIG. 2 shows a side view of the main beam 1. The main beam 1 is conditionally divided into two end sections 5 and the middle (central, intermediate) section 6, located between the end sections 5, adjoining its ends to the end sections 5 and representing a section of the widening of the main beam 1 The height of the middle section 6 is greater than the height of each of the end sections 5 and is made variable.

[0017] The middle section 6 is conditionally divided into two segments 7 of variable height (or “section 7 of variable height section”) and segment 8 of constant height (or “section 8 of constant height section”) located between segments 7 of variable height and adjacent to them. The conditional boundaries of sections 5, 6 and segments 7, 8 are indicated by dotted lines.

[0018] To reduce the mass of the main beam 1 in the side walls 4, a plurality of holes 9 are made, located in the segments 7, 8 of the middle section 6 of the main beam 1 and on the neutral lines 10 of the profile of each of the walls 4 and having different sizes and shapes, while in Each segment 7 of variable height has two holes 9, and each segment 8 of constant height has five holes 9. Each hole 9 located in each segment 7 of variable height has the shape of an oval, the longitudinal axis of which lies on the neutral line 10. Location of holes 9 along the neutral line 10 helps to maintain the strength of the side walls 4 due to its zero normal stresses. Accordingly, the closer the holes 9 are to the neutral line 10 (along its trajectory), the lower the intensity of internal forces at the edge of the holes 9. Thanks to this approach, the maximum possible increase in the size of the holes 9 and, accordingly, a decrease in the weight of the main beam 1 and the car tare are achieved. maintaining the remaining optimal parameters of the design of the main beam 1 and the car, such as strength, reliability, fatigue, as well as dynamic qualities.

[0019] With reference to FIG. 3, the minimum distance S between the holes 9 is not less than 120 mm, to ensure the specified strength of the structure of the main beam 1 and the frame as a whole. Calculations showed that a further decrease in this distance leads to a loss of strength of the main beam. The saving of metal in the manufacture of a unit is about 0.5 tons. Also, the calculations showed that the holes in the segments 7 of variable height made it possible to reduce the mass and material consumption of the main beam 1 while maintaining its strength, which led to a decrease in tare weight, which is due to the use of this solution about 0.2 t while maintaining the optimal parameters of strength, fatigue and stability of the frame. The maximum distance S between the holes 9 is not more than 1100 mm, because when holes are made at a greater distance, a reduction in the mass of the main beam will not be achieved compared to the closest analogue.

[0020] The solution of the technical problem and the achievement of the technical result are shown above in the preferred embodiment of the proposed technical solution with reference to the drawings. A person skilled in the art is aware of other options for implementing the proposed technical solution using other material and technical means known from the prior art. Below are possible options for performing some of the features of the proposed technical solution.

[0021] In other embodiments of the proposed technical solution, at least one upper shelf 2 and / or at least one lower shelf 3 can be a part, for example, a sheet or a shelf (for example, a brand or an I-beam), an assembly unit, for example, at least two sheets or shelves (for example, tees or I-beams) connected by at least one assembly operation known from the prior art, for example, by welding, or at least two elements located at a given distance from each other, for example, shelves ( for example, brand, I-beam or Z profile).

[0022] In other embodiments of the proposed technical solution, at least one wall 4 may be at least one sheet and/or at least one part of another element, for example, a wall of the Z profile.

[0023] In other embodiments of the proposed technical solution, at least one wall 4 may include a plurality of holes 9, while in order to achieve the maximum weight reduction of the proposed technical solution while maintaining the remaining optimal parameters, it is necessary that in each of the segments 7, 8 there at least one hole 9 is made. Additionally, to reduce the weight of the proposed technical solution while maintaining its strength, the center of at least one or each hole 9 can be located on the neutral line 10 and/or one of the diameters of at least one or each hole 9 on at least one or each segment 7, 8 of the middle section 6 can be located along the neutral line 10.

[0024] In other embodiments of the proposed technical solution, at least one opening 9 of at least one wall 4 may have a different shape, for example, a circle, an ellipse, a parallelogram with rounded sides, a parallelogram with rounded corners, etc.

[0025] The proposed technical solution can be used in railway vehicles known from the prior art, for example, in freight cars, in particular, platform cars. With a decrease in weight and material consumption, the tare weight obviously decreases and the load capacity of a railway vehicle increases. In addition, the design of the proposed technical solution of variable height along the length makes it possible to reduce the mass while maintaining strength, since the proposed solution corresponds to the diagram of the bending moment that occurs in operation.

[0026] Positions in the drawing:

1 - spinal beam

2 - top shelf

3 - bottom shelf

4 - wall

5 - end section

6 - middle (central) section

7 - variable height segment

8 - constant height segment

9 - hole

10 - neutral line

Claims (4)

1. The spinal beam (1), including the wall (4) and having a middle section (6), which is a widening section, while in the wall (4) a plurality of holes (9) are made located in the middle section (6) and on the neutral line (10) of the center beam (1), characterized in that the distance S between the holes (9) is at least 120 mm. 2. Spinal beam according to claim 1, characterized in that the centers of the holes (9) are located on the neutral line (10). 3. Spinal beam according to claim 1, characterized in that one of the diameters of each hole (9) is located along the neutral line (10). 4. Spinal beam according to claim 1, characterized in that the distance S between the holes (9) is not less than 120 mm and not more than 1100 mm.

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