RU212638U1 - FREIGHT CAR TROLLEY - Google Patents

Abstract

The utility model relates to the rolling stock of railway transport and can be used in the construction of two-axle bogies of freight cars. The technical result achieved by the utility model is to increase the operational reliability of the freight car bogie while simultaneously improving the manufacturability of its manufacture. A freight car bogie containing a dead center bracket, a bolster including an upper chord with a thrust bearing, side walls, a lower chord made with support sections at the ends of the bolster for spring suspension springs, pockets for friction wedges, bearing pads, lugs for attaching the bracket dead center, while each lug rests on a stiffener associated with the lug and the side wall of the beam, and between the lugs there is an additional middle stiffener associated with the side wall and the thrust bearing, characterized in that the middle rib is made with a thickness S2 and a height H2 exceeding the thickness S1 and the height H1 of the stiffening ribs on which the lugs rest, and the transitions from the ribs to the side wall, from the lugs to the side wall, from the lugs to the upper chord, from the lugs to the thrust bearing and from the middle rib to the thrust bearing are made of radius. 11 w.p. f-ly, 8 ill.

Description

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

A well-known design of the bolster of a freight car bogie (RU No. 79509, B61F 5/52, 01/10/2009), containing an upper chord with an internal vertical rib, a thrust bearing with a flat base plate and a thrust annular shoulder, a lower chord, vertical side walls and located between the upper and the lower chords the support column of the thrust bearing. The landing surfaces for side bearings are made with a system of several holes located asymmetrically relative to the axis of the bolster, allowing you to install various types of removable side bearings on the landing surface. Technological holes located in the upper belt are made with additional reinforcement in the form of a rounded protrusion on the outer surface. The vertical belt is made without a hole in the vertical wall in the area of the bearings installation.

The disadvantage of the bolster according to patent No. 79509 is the low reliability of the attachment point of the dead center bracket.

From patent No. 118275 for a utility model, a bolster of a freight car bogie is known, containing an upper belt with a cylindrical thrust bearing with a flat support surface and a thrust annular shoulder, with flat support platforms for side bearings with mounting holes, a lower belt made with a support surface for spring suspension springs , turning into an inclined chord, vertical side walls, pockets for installing friction wedges in the end parts of the bolster, two parallel vertical ribs connecting the upper and lower chords, two oval-shaped holes in the side walls under the support pads for the side bearings, while the ribs are made along the entire length of the beam and increasing in thickness towards the center, under the thrust collar between the ribs and side walls, internal profits are made in the form close to a cylinder with a vertical generatrix, in the thrust collar on the inner surface, vertical recesses are made in the form of a cylinder sector with a vertical 118275, B61F 5/52, published on 07/20/2012, two supporting platforms for side bearings have two pairs of mounting holes.

The disadvantage of the bolster according to patent No. 118275 is the insufficient reliability of the attachment point of the dead center bracket.

From patent No. 195127, a freight car bogie is known, including a dead center bracket made with holes on the axis of which the dead center is located, a dead center earring, the end of which is pivotally connected to the dead center bracket, a bolster containing a thrust bearing and a shelf with mating surfaces , with which the dead center bracket is rigidly connected, and the wear-resistant disc located in the thrust bearing, characterized in that the axis of the holes of the dead center bracket is located in the range from 12 mm below the surface of the wear-resistant disc to 38 mm above the surface of the wear-resistant disc, while the axis of the holes of the dead center bracket point is located relative to the axis of the thrust bearing at a distance S, which is L/2 - 684 ≤ S ≤ L/2 - 624, (mm), where L is the bogie base, indicated in mm (RU No. 195127, B61F 5/50, B61H 13/ 34, published 01/15/2020).

The disadvantage of the bolster according to patent No. 195127 is the insufficient reliability of the attachment point of the dead center bracket.

The bolster according to patent No. 195127 is chosen as the closest analogue.

The technical problem solved by the proposed utility model is the creation of a manufacturable, reliable in operation design of a freight car bogie.

The technical result achieved by the utility model is to increase the operational reliability of the freight car bogie while simultaneously improving the manufacturability of its manufacture.

The claimed technical result is achieved due to the fact that in the freight car bogie containing the dead center bracket, the bolster, including the upper belt with a thrust bearing, side walls, the lower belt, made at the ends of the bolster with support areas for spring suspension springs, pockets for friction wedges, side bearing pads, lugs for installing the dead center bracket, each lure rests on a stiffener, and between the lugs there is an additional middle stiffener associated with the side wall and the thrust bearing, while the middle rib is made with a thickness and height exceeding the thickness and height of the ribs stiffnesses on which the lugs are based, and the transitions from the ribs to the side wall, from the lugs to the side wall, from the lugs to the upper chord, from the lugs to the thrust bearing and from the middle rib to the thrust bearing are made of radius.

The thickness S2 of the middle rib may be 20 mm to 40 mm.

The thickness S1 of each side stiffener on which the tide rests can be from 10 mm to 22 mm.

The height H2 of the middle rib can be between 70 mm and 110 mm.

The height H1 of each side stiffener on which the tide rests can be between 45 mm and 85 mm.

The angle α of deviation of the long side of the mentioned tide from the transverse axis of the bolster can be from 10° to 20°.

The radius transition R3 from the side ribs to the side wall can be from 8 mm to 30 mm.

The radius transition R4 from the bosses to the side wall can be from 20 mm to 40 mm.

The radius transition R1 from the tides to the upper belt can be from 40 mm to 60 mm.

The radius transition R5 from the middle rib to the thrust bearing can be from 10 mm to 20 mm.

The radius transition R2 from bosses 8 to thrust bearing 2 can be from 5 mm to 30 mm.

The radius transition R6 from the middle rib 10 to the side wall 4 can be between 5 mm and 20 mm.

The utility model is illustrated by drawings:

in fig. 1 - a general view of the trolley from the side;

in fig. 2 - shows a general view of the trolley disassembled from above;

in fig. 3 - a section of the bolster with a dead center bracket is presented;

in fig. 4 - shows a general view of the bolster from above;

in fig. 5 - shows a general view of the bolster from the side;

in fig. 6 - area with tides for installing the dead center bracket, isometry, bottom view;

in fig. 7 - area with tides for installing the dead center bracket, side view;

in fig. 8 - area with tides for installing the dead center bracket, top view.

Positions on figures:

1 - bolster;

2 - side frame;

3 - wheelset;

4 - spring suspension;

5 - dead point bracket;

1.1 - the upper belt of the bolster;

1.2 - thrust bearing;

1.3 - the lower belt of the bolster;

1.4 - side walls of the bolster;

1.5 - pockets for placing friction wedges;

1.6 - supporting surfaces for spring suspension springs;

1.7 - base bearing platform;

1.8 - lugs for attaching the dead center bracket;

1.9 - stiffener on which the tide 1.8 rests;

1.10 - middle stiffener;

S1 - stiffener thickness 1.9;

S2 - stiffener thickness 1.10;

H1 - stiffener height 1.9;

H2 - stiffener height 1.10;

R1 - radius transition from tides 1.8 to the upper belt 1.1;

R2 - radial transition from the tides 1.8 to the thrust bearing 1.2;

R3 - radial transition from the rib 1.9, on which the tide 1.8 rests, to the side wall 1.4;

R4 - radial transition from the tides 1.8 to the side wall 1.4;

R5 - radial transition from the middle rib 1.10 to the thrust bearing 1.2;

R6 - radial transition from the middle rib 1.10 to the side wall 1.4.

The inventive bogie of a freight car (Fig. 1, 2) contains a bolster 1, side frames 2, wheelsets 3, spring suspension 4, dead center bracket 5. Bolster 1 (Fig. 4.5) includes an upper belt 1.1 with a thrust bearing 1.2 , side walls 1.4, the lower belt 1.3, made with support sections 1.6 at the ends of the bolster 1 for spring suspension springs 4, pockets 1.5 for friction wedges, supporting platforms 1.7 of the side bearing, lugs 1.8 for installing the dead center bracket 5, with each tide 1.8 (Fig. 6.7) rests on a stiffener 1.9, and between the tides there is an additional middle stiffener 1.10, associated with the side wall 1.4 and the thrust bearing 1.2.

The middle rib 1.10 is made with a thickness and height exceeding the thickness and height of the stiffening ribs 1.9, on which the bosses 1.8 rest, and the transitions from the ribs 1.9 and 1.10 to the side wall 1.4, from the bosses 1.8 to the side wall 1.4, from the bosses 1.8 to the upper belt 1.1, from the tides 1.8 to the thrust bearing 1.2 and from the middle rib 1.10 to the thrust bearing 1.2 are made of radius. The middle rib 1.10 is made thicker than the ribs 1.9 under the lugs 1.8 due to the fact that this rib 1.10 provides the necessary rigidity of the thrust bearing 1.2 of the bogie, which bears the main load from the weight of the car, and the side ribs 1.9 provide the rigidity of only the lugs 1.8 for attaching the dead bracket points.

The thickness S2 of the middle rib 1.10 can be between 20 mm and 40 mm.

The thickness S1 of each stiffener 1.9, on which the boss 1.8 rests, can range from 10 mm to 22 mm.

The height H2 of the middle rib 1.10 can be between 70 mm and 110 mm.

The height H1 of each stiffener 1.9, on which the boss 1.8 rests, can range from 45 mm to 85 mm.

The deviation angle α (Fig. 8) of the long side of the tide 1.8 from the transverse axis of the bolster can be from 10° to 20°.

Radial transition R1 (Fig. 6) from the tides 1.8 to the upper belt 1.1 can be from 40 mm to 60 mm.

Radius transition R2 from lugs 1.8 to thrust bearing 1.2 can be from 5 mm to 30 mm.

The radial transition R3 from each rib 1.9, on which the boss 1.8 rests, to the side wall 1.4 can be between 8 mm and 30 mm.

The radius transition R4 from the bosses 1.8 to the side wall 1.4 can range from 20 mm to 40 mm.

The radius transition R5 from the middle rib 1.10 to the thrust bearing 1.2 can be from 10 mm to 20 mm.

The radius transition R6 from the middle rib 1.10 to the side wall 1.4 can be between 5 mm and 20 mm.

Calculations have shown that the implementation of the mentioned transitions with a radius made it possible to ensure the conjugation of the tides and ribs most smoothly, without the occurrence of local tensions, ensuring the proper reliability and strength of the bolster in this area.

All geometrical parameters of the claimed bolster given in the formula of the utility model are selected by calculation, going beyond these ranges can lead to defects during the solidification of the finished product during casting. The absence of defects and local stresses was established from diagrams obtained from the results of computer simulation of the beam.

An example of use is a manufactured bolster whose middle rib thickness S2 is 30 mm. The thickness S1 of each stiffener was 12 mm. The height H2 of the middle rib was 90 mm. The height H1 of each side stiffener, on which the tide rests, was 65 mm. The angle α of deviation of the long side of the tide from the transverse axis of the bolster was 15°. The radius transition R3 from each side rib, on which the tide rests, to the side wall was 12 mm. The radius transition R5 from the middle rib to the side wall was 10 mm. The radius transition R4 from the tides to the side wall was 30 mm. The radius transition R1 from the tides to the upper belt was 50 mm. The radius transition R2 from the tides to the thrust bearing was 15 mm. The radius transition R6 from the middle rib to the thrust bearing was 10 mm. Tests have shown the reliability of the manufactured bolster and the absence of casting defects.

Another example of use is the bolster, in which the thickness S2 of the middle rib was 40 mm. The thickness S1 of each stiffener was 18 mm. The height H2 of the middle rib was 100 mm. The height H1 of each side stiffener, on which the tide rests, was 80 mm. The angle α of deviation of the long side of the tide from the transverse axis of the bolster was 18°. The radius transition R3 from each side rib, on which the tide rests, to the side wall was 20 mm. The radius transition R5 from the middle rib to the side wall was 17 mm. The radius transition R4 from the tides to the side wall was 35 mm. The radius transition R1 from the tides to the upper belt was 55 mm. The radius transition R2 from the tides to the thrust bearing was 25 mm. The radius transition R6 from the middle rib to the thrust bearing was 18 mm. The calculations showed the reliability of the bolster and the absence of casting defects.

Thus, the claimed utility model, in comparison with the closest analogue, makes it possible to increase the reliability in operation while improving the manufacturability of its manufacture by eliminating places of additional tension.

Claims (12)

1. A freight car bogie containing a dead center bracket, a bolster including an upper belt with a thrust bearing, side walls, a lower belt made with support sections at the ends of the bolster for spring suspension springs, pockets for friction wedges, bearing pads, tides for fixing the bracket of the dead center, while each lug rests on a stiffening rib associated with the lug and the side wall of the beam, and between the tides there is an additional middle stiffener associated with the side wall and the thrust bearing, characterized in that the middle rib is made with a thickness of S2 and a height of H2 exceeding the thickness S1 and the height H1 of the stiffening ribs on which the lugs rest, and the transitions from the ribs to the side wall, from the lugs to the side wall, from the lugs to the upper chord, from the lugs to the thrust bearing and from the middle rib to the thrust bearing are made of radius. 2. Freight car bogie according to claim 1, characterized in that the thickness S2 of the middle rib is between 20 mm and 40 mm. 3. Freight car bogie according to claim 1, characterized in that the thickness S1 of each stiffener, on which the tide rests, is from 10 mm to 22 mm. 4. Freight car bogie according to claim 1, characterized in that the height H2 of the middle rib H2 is between 70 mm and 110 mm. 5. Freight car bogie according to claim 1, characterized in that the height H1 of each stiffener H1, on which the tide rests, is from 45 mm to 85 mm. 6. Truck of a freight car according to claim 1, characterized in that the angle of deviation α of the long side of the tide from the transverse axis of the bolster is from 10° to 20°. 7. Freight car bogie according to claim 1, characterized in that the radius of the radial transition R3 from each rib, on which the tide rests, to the side wall is from 8 mm to 30 mm. 8. Freight car bogie according to claim 1, characterized in that the radius of the radial transition R6 from the middle rib to the side wall is from 5 mm to 20 mm. 9. Freight car bogie according to claim 1, characterized in that the radius of the radial transition R4 from the tides to the side wall is from 20 mm to 40 mm. 10. Freight car trolley according to claim 1, characterized in that the radius of the radial transition R1 from the tides to the upper belt is from 40 mm to 60 mm. 11. Freight car trolley according to claim 1, characterized in that the radius of the radial transition R2 from the tides to the thrust bearing is from 5 mm to 30 mm. 12. Freight car trolley according to claim 1, characterized in that the radius of the radial transition R5 from the middle rib to the thrust bearing is from 10 mm to 20 mm.

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