RU176432U9 - TROLLEY FOR FREIGHT RAILWAY CARS - Google Patents

Abstract

This utility model relates to railway transport, in particular to the design of a bogie for freight railway cars. The proposed bogie for freight railway cars contains a bolster (4), two side frames (3) located on opposite sides of the bolster (4), a brake linkage (6), a support beam (9) of the auto mode device, a contact bar (7) of the auto mode device fixed on the support beam (9) of the auto mode, and the support brackets (10) of the side frame, intended for fixing the support beam (7) of the auto mode device. The distance from the center of the platform of the contact strip (7) of the auto mode device to the vertical plane, the transverse axis of the track passing through the center of the thrust bearing (5) of the bogie bolster (4), is from 310 to 355 mm, and the brake linkage (6) is integrated into the bogie .

Description

1.1 Technical field

This utility model relates to railway transport, and in particular to bogies for freight railway cars.

1.2 State of the art

Various designs of bogies for rail freight cars are known in the art.

Known bogie two-axle model 18-100, type 2 GOST 9246-2013 for freight railway cars, containing two wheelsets, four axle boxes, two cast side frames, two sets of central spring weighing, cast bolster and brake linkage. The bogie brake is a shoe brake with one-sided pressing of the shoes. The connection of the frame with the axle boxes is direct jaw, the support of the body on the bogie through the thrust bearing of the bolster, and when the body is tilted, additionally through the bearings. The bogie allows axle load up to 230.5 kN (23.5 tf) at a speed of 120 km/h and 235 kN (24 tf) at a speed of 100 km/h. Moreover, the distance from the center of the platform of the contact strip of the auto mode device to the vertical transverse axis of the path of the plane passing through the center of the bogie bearing should be 270-275 mm.

The disadvantage of the design of the cart 18-100 is the limitation of the distance from the center of the platform of the contact beam of the auto mode device to the vertical transverse axis to the path of the plane passing through the center of the thrust bearing of the cart, which makes the design of the cart insufficiently reliable.

Also, a two-axle bogie model 18-6863, type 4 GOST 9246-2013 for freight railway cars is known, containing two side frames, side frame brackets, a cast bolster, two sets of central spring weighing, an axlebox assembly with roller bearings, two wheelsets, brake linkage, contact beam of the auto mode device, slippers. The bogie brake is a shoe brake with one-sided pressing of the shoes. The connection of the frame with the axle boxes is jaw, the support of the body on the bogie through the thrust bearing, and when the body is tilted, additionally through the bearings. The bogie allows an axle load of up to 265 kN (27 tf) at a speed of 100 km/h. Moreover, the distance from the center of the platform of the contact strip of the auto mode device to the vertical transverse to the axis of the path of the plane passing through the center of the bogie bearing should be 300-310 mm.

The disadvantage of this design of a two-axle bogie, as well as in the bogie of model 18-100 mentioned above, is the rigid limitation of the distance from the center of the platform of the contact beam of the auto mode device to the vertical transverse axis to the path of the plane passing through the center of the bogie bearing, which in turn reduces reliability of the design, since there is a possibility of touching the car side carrier on the beam of the auto mode device when the freight trolley passes the curved sections of the track.

Another disadvantage of the above designs of bogies for railway cars is the complicated design of the brake transmission, in which the brackets of the side frame of the bogie are designed to fasten the support beam of the auto mode device and the suspensions of the brake linkage triangular.

Thus, there is a need in the prior art to provide a freight car bogie that provides a more reliable design when the freight bogie passes curved track sections.

In curved sections, the track arrangement has a number of features, the main of which are the elevation of the outer rail above the inner one, the presence of transition curves, the widening of the track at small radii, the use of shortened rails on the inner rail thread, strengthening the track, increasing the distance between the axes of the tracks in circular curves of two- and multi-track lines in accordance with the requirements of the gauge. Thus, with an unreliable design of the cargo bogie, there is a possibility of hitting the sidecar of the car on the beam of the auto mode device when passing curved sections of the track, and there is also a high probability of hitting the beam of the auto mode device with the vertical lever of the brake linkage.

In connection with the above, there is a need for a more reliable design of the cargo trolley, which is solved by the present utility model described below.

Disclosure of the essence of the utility model

A design of a cargo bogie for freight railway cars is proposed, which contains one bolster, a bolster bearing, two bolster bearings located at opposite ends of the bolster, two side frames, each of which is installed on each side of the bolster, two wheelsets located at the ends of the side frames, four axleboxes of the wheel pairs, a brake linkage integrated into the bogie, an auto mode device support beam, side frame brackets intended only for fastening the auto mode device support beam, an auto mode device contact plate located on the auto mode device support beam , and the use of a brake linkage integrated into the bogie, as presented in this utility model, allows you to increase the distance from the center of the platform of the contact beam of the auto mode device to a vertical transverse to the axis of the path of the plane passing through the center of the bearing nick of the trolley by a value from 310 to 355 mm.

EFFECT: technical result is to exclude the possibility of hitting the carriage bearing on the support beam of the auto mode device when passing the freight car on curved sections of the track and is achieved by increasing the distance from the center of the platform of the contact strip of the auto mode device to the vertical plane transverse to the axis of the track from 310 to 355 mm, instead of the established distance according to GOST 9246-2013 from 300 to 310 mm

In another embodiment, the brake linkage is configured to accept cast iron brake pads.

In another embodiment, the bearings of the bolster can be made rigid, resilient, roller (roller) or resilient.

In one embodiment, the side frames and bolster may be cast.

In one possible implementation, the side frames and the bolster can be made of stamped welded steel.

Brief description of the drawings

The essence of the utility model is explained in more detail with reference to the attached drawings:

The figure 1 shows a top view of a freight bogie known from the prior art (a bogie of a freight car model 18-6863) with a distance from the center of the platform of the contact strip of the auto mode device to a vertical plane transverse to the axis of the path passing through the center of the bogie bearing by a value of 300 to 310 mm according to GOST 9246-2013.

The figure 2 shows a detailed top view of the frame of the side cargo trolley, known in the prior art with a distance from the center of the platform of the contact strip of the auto mode device to a vertical transverse to the axis of the path of the plane passing through the center of the trolley bearing by a value of 300 to 310 mm according to GOST 9246-2013 .

Figure 3 shows a top view of a cargo trolley, as described in this utility model.

The figure 4 shows a detailed view of the cargo trolley according to the description of the present utility model.

Detailed description of the utility model

As you know, the cargo auto mode is a device that automatically regulates the train braking mode depending on the load of each car by changing the air pressure in the brake cylinders (Encyclopedia of Railway Transport, Moscow, Scientific publishing house "Big Russian Encyclopedia", 1995).

In FIG. 1 and FIG. 2 shows a top view and a detailed top view of a frame of a side cargo truck known in the prior art (models 18-6863) with a distance from the center of the platform of the auto mode contact strip to a vertical plane transverse to the axis of the path passing through the center of the trolley bearing by a value of 300 to 310 mm according to GOST 9246-2013.

The bogie consists of two wheelsets, four axle boxes, two cast side frames, two sets of central spring suspension, a cast bolster and a brake linkage.

In the cart in Fig. 1, known in the prior art, uses a brake linkage - shoe type, with one-sided pressing of the shoes. The brake linkage in the bogie according to FIG. 1 has vertical brake linkage arms (not shown).

The connection of the frame with the axle boxes is jaw, the support of the body on the bogie through the bearing of the bolster, and when the body is tilted, additionally through the bearings.

The bolster is cast from steel 20GL or 20G1FL in the form of a beam of equal resistance to bending of a closed box section. The bolster has a thrust bearing, a shelf for fastening the bracket of the dead point of the lever transmission of the brake, supports for side bearings, recesses for accommodating friction wedges, shoulders limiting the displacement of the internal springs of the spring set, and protrusions that keep the external springs from being displaced when the bogie moves.

Lateral movements of the bolster are damped by the transverse elasticity of the springs on which it rests.

Bogie sliders are the lateral support of the car body. The gap between the bearings for the main types of four-axle cars should be within 6 - 16 mm.

In FIG. Figure 2 additionally shows the upper chord of the side frame (projection A), which shows the side frame brackets, which in this bogie design are designed to fasten the auto mode support beam and suspensions of the brake linkage triangular.

The bogie for freight railway cars proposed in the present description of the utility model is intended for all freight four-axle mainline cars, except for isothermal ones, with axial loads up to 230 kN (23.5 tf) and speeds up to 120 km/h.

As shown in FIG. 3, the proposed truck for freight railway cars consists of two wheelsets 1; two sets of central spring suspension (not shown), four axleboxes 2, which drive the wheelsets; bolster 4, two bearings 8 bolster 4; two side frames 3 located on opposite sides of the bolster 4. The thrust bearing 5 of the bolster, designed to support the freight car body on the bogie. Brake linkage 6 integrated in the bogie. Support beam 9 auto mode device; contact strip 7 of the auto mode device, fixed on the support beam 9 of the auto mode device.

In the present design of the truck, a brake linkage 6 integrated into the truck is used. The term "brake linkage integrated in the bogie" means that all components of the brake linkage, as well as the brake cylinder, are located on the bogie, and only the pneumatic part of the brake is located on the frame of the car. This design of the brake linkage 6 does not have vertical levers that limit the possibility of increasing the distance from the center of the platform of the contact strip 7 of the auto mode device to the vertical one, thus, the distance from the center of the platform of the contact strip 7 of the auto mode device to the vertical transverse to the axis of the path of the plane is from 310 to 355 mm relative to the requirements of GOST 9246-2013. This design of the brake linkage, unlike analogue, has no levers that limit the possibility of increasing the distance from the center of the site of the contact strip of the auto mode device to a vertical plane transverse to the track axis. The possibility of increasing this distance makes it possible to exclude the possibility of touching the car side bearing on the support beam 9 of the auto mode device when the trolley passes through curved sections of the track. The minimum value of this range (310 mm) of dimensions is due to a decrease in the probability of hitting the car side bearing on the beam of the auto mode device when passing curved sections of the track. The maximum value of this range (355 mm) of dimensions is due to the exclusion of the possibility of contact between the auto mode support beam and the wheels of the cargo trolley.

Thus, to ensure complete overlap of the bogie side bearing in curved sections of the track of a small radius by the side supports of the car, the size of the side supports is increased, which, at standard values of the distance to the auto mode beam, can lead to touching the auto mode by the side support of the car. To exclude such a possibility, in a bogie with an integrated braking system, the auto mode beam is displaced.

In FIG. Figure 4 additionally shows the upper belt of the side frame (projection A), which shows the brackets of the side frame, which in this bogie design, unlike the analogue, are intended only for attaching the support beam of the auto mode device. The need for fastening the hangers of the brake linkage triangles is not necessary in this case, since the brake linkage is integrated into the bogie.

The connection of the side frames with the axleboxes is direct jaw, with free support of the frame on the axleboxes and limitation of the movement of the axleboxes relative to the frame due to the guide jaws, the railway car body is supported on the bogie through the thrust bearing 5 of the bolster, and when the railway car body is tilted, when the bogie passes through curvilinear sections of the path is additionally carried out through the bearings 8 of the bolster.

The side frame 3 consists of horizontal and inclined belts, as well as columns. In the middle of the side frame 3 there is an opening for the central spring suspension (not shown), and at the ends there are axlebox openings designed for axleboxes 2. The sections of inclined belts and vertical columns are trough-shaped. The horizontal section of the lower belt has a closed box-shaped section.

In the preferred embodiment of this utility model, in accordance with GOST 9246-2013, the side frames 3 of the truck and the bolster 4 can be cast from low-alloy steel 20GL, 20G1FL or 20FTL.

In another embodiment of the present utility model, in accordance with GOST 9246-2013, the side frames 3 of the bogie and the bolster can be made of stamped-welded steel.

In one of the embodiments, in accordance with GOST 9246-2013 side bearings 8 of the bolster 4 can be made rigid, resilient, roller (roller) or resilient.

In one embodiment, in accordance with GOST 9246-2013, the brake linkage may contain composite brake pads.

In another embodiment, in accordance with GOST 9246-2013, the brake linkage may also contain cast iron brake pads.

This utility model is not limited to the specific examples disclosed in the description for illustrative purposes, and covers all possible modifications and alternatives included in the scope of this utility model, defined by the claims of the utility model.

Reference designation list

1 - wheelset,

2 - axle box,

3 - side frame,

4 - bolster,

5 - bolster bearing,

6 - brake linkage,

7 - contact strip of auto mode,

8 - slider of the bolster,

9 - support beam auto mode.

10 - side frame brackets.

Claims (6)

1. A bogie for freight railway cars, comprising a bolster, two side frames located on opposite sides of the bolster, a brake linkage, an auto mode device support beam, an auto mode device contact plate fixed on the auto mode support beam, and side frame support brackets designed to for fastening the support beam of the auto mode device, characterized in that the distance from the center of the platform of the contact strip of the auto mode device to the vertical plane, the transverse axis of the track passing through the center of the thrust bearing of the bogie bolster, is from 310 to 355 mm, and the brake linkage is integrated into the bogie. 2. Truck according to claim. 1, characterized in that the brake linkage contains composite brake pads. 3. Cart according to claim. 1, characterized in that the brake linkage contains cast-iron brake pads. 4. Trolley according to any one of paragraphs. 1-3, characterized in that the bearings of the bolster can be made rigid, resilient, roller or resilient. 5. Trolley according to any one of paragraphs. 1-4, characterized in that the side frames and the bolster are made of cast. 6. Trolley according to any one of paragraphs. 1-4, characterized in that the side frames and the bolster are made of stamped-welded steel.

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