RU105871U1 - SIDE FRAME OF RAILWAY CAR TROLLEY - Google Patents

Abstract

 1. The side frame of the railroad car truck, which contains a spring opening (1) for the spring set, formed by the upper belt (3) with cantilever parts forming the external jaw (4), the lower belt (5) of a closed section with a support platform (6) for spring set and vertical walls (7) with a platform (8) for attaching a friction plate connecting the upper belt (3) and the lower belt (5), the specified side frame also contains axle openings (2) for axlebox assemblies of wheel pairs formed by external jaws (4) supporting surfaces by means of (13) the upper belt (3), as well as the internal jaws (14) connected to the inclined belts (11), while the vertical walls (7) of the spring opening (1) for the spring set, the inclined belts (11) and the upper belt (3) form holes (12) substantially symmetrically arranged relative to the transverse axis of the frame, having a substantially triangular shape, while in the lower corners of the spring opening (1) there are collars (10) for the spring kit to fix the position of the spring springs kit, characterized in that in the console part inside the top of the belt (3) at the place of its transition into the external jaw (4), the first tide (15) of metal was made, from the side of the hole (12) on the vertical wall (7) of the spring opening (1) for the spring set, local thickenings (16) of metal were made , between the local thickenings (16) of the metal, a jumper (17) is made, from the side of the hole (12) on the platform (8) for securing the friction plate, a second tide of metal (18) is made, and the shoulders (10) are made so that they are not mated with the radius of transition of the support platform (6) into the vertical walls (7). ! 2. The side frame according to claim 1, exc.

Description

FIELD OF TECHNOLOGY

The proposed technical solution relates to the field of railway transport. More specifically, the present technical solution relates to the construction of a cast side frame of a three-element truck carriage.

BACKGROUND

Three-element carts with one or two-stage spring suspension of models 18-100, 18-131, 18-578, 18-579, 18-194-1 are widely used in the freight railway transport as carriage chassis of the cars of the Russian Federation and the CIS countries ( Russia), 18-7020, 18-755, 18-781, 18-1711 (Ukraine), etc., which use cast side frames.

A distinctive feature of the known side frames is their execution in the form of one steel casting, in the middle part of which there is an opening for the central spring set, and at the ends there are openings for axle boxes of wheel pairs. Such side frames are described, for example, in patents RU 42992, RU 2224673, RU 2200681, RU 39558 and RU 42991.

The closest analogue of this utility model is the side frame of a railway carriage trolley described in the copyright certificate SU 1135684. The specified side frame contains a spring opening for a spring set, formed by an upper belt with cantilever parts forming the outer jaw, a lower closed-section belt with a support platform for the spring set and vertical walls with a platform for attaching a friction plate connecting the upper belt and lower belt, the specified side frame also contains axle boxes new openings for axle boxes of wheel pairs formed by external jaws, supporting surfaces of the upper belt, and also internal jaws connected to inclined belts, while the vertical walls of the spring opening, inclined belts and the upper belt form holes essentially symmetrically located relative to the transverse axis of the frame, having a substantially triangular shape, while in the lower corners of the spring opening there are collars for fixing the position of the springs of the spring set.

The disadvantage of the closest analogue is the low fatigue strength of the structure, due to the presence in the body of the frame of the zones prone to fatigue failure. This leads to the destruction of the side frames much earlier than the intended service life.

DISCLOSURE OF A USEFUL MODEL

The objective of this utility model is to create a side frame of a railway carriage trolley with increased fatigue strength and extended service life.

This problem was solved by manufacturing a side frame, in which the strength of those zones where thermal units are created, leading to the occurrence of internal casting defects, is increased. According to one embodiment of the present utility model, the proposed side frame comprises a spring opening for a spring set, formed by an upper belt with cantilever parts forming the external jaws, a lower closed-section belt with a support platform for the spring set and vertical walls with a platform for attaching a friction plate connecting the upper belt and lower belt, the specified side frame also contains openings for axle boxes of wheel pairs, formed by external jaws, supporting legs the surface of the upper belt, as well as the internal jaws connected to the inclined belts, while the vertical walls of the spring opening for the spring set, the inclined belts and the upper belt form holes essentially symmetrically arranged relative to the transverse axis of the frame, having a substantially triangular shape, while in the lower The corners of the spring opening for the spring kit have collars for fixing the position of the springs of the spring kit. The specified side frame is characterized in that in the cantilever part inside the upper zone at the place of its transition into the external jaw, the first metal rush is made, from the side of the hole on the vertical wall of the spring opening for the spring set, local metal thickenings are made, a jumper is made between the local metal thickenings, on the side holes on the platform for attaching the friction plate made a second tide of metal, and these flanges are made in such a way that they are not conjugated with the radius of transition of the base Vertical, wall.

Thus, through the formation or reduction of thermal units, which determine the installation location of easily separated direct supply profits, conditions are provided for uniform crystallization in the production of castings of all structural elements and the production of dense metal without shrinkage defects.

The technical result of the proposed technical solution is to increase the fatigue strength of the most damaged in operation areas of the cast structure of the side frame.

According to another embodiment, the first metal tide is made in the form of a pyramid, the top of which is facing the mating angle of the walls of the cantilever part of the frame, the local metal thickenings are made in the form of protrusions, the bridge is made in the form of a local metal thickening, and the second metal tide is made in the form of a column.

According to another embodiment, on one side of the longitudinal axis of the side frame, the thickness of the local thickenings of the metal increases in the direction from the specified longitudinal axis, and the width of the local thickenings of the metal increases toward the center between them and in the direction from the specified longitudinal axis.

According to yet another embodiment, the local thickenings of the metal are substantially symmetrical with respect to the second tide of the metal.

BRIEF DESCRIPTION OF THE DRAWINGS

The proposed side frame will now be described in more detail with reference to the accompanying drawings, in which:

figure 1 shows the main view and top view of the proposed side frame;

figure 2 shows a section along the line aa shown in figure 1;

figure 3 shows a section along the line BB shown in figure 1;

figure 4 shows a section along the line bb shown in figure 1;

figure 5 shows a section along the line GG shown in figure 1;

6 shows a view along arrow D shown in figure 1;

Fig.7 shows a view along arrow E shown in Fig.4;

Fig.8 shows a section along the line ZZ shown in Fig.6.

IMPLEMENTATION OF A USEFUL MODEL

As shown in figure 1, in the middle part of the inventive side frame posted spring aperture 1 for a spring set, and at the ends - axle openings 2 for axle box wheel assemblies. The openings 2 can be made open (see figure 1) or closed. The aperture 1 is formed by the upper belt 3 with consoles forming the outer jaw 4, the lower belt 5 of a closed section, which has a support pad 6 for the spring set, and vertical walls 7 with a pad 8 for attaching the friction plate connecting the belt 3 and belt 5. On the support platform 6 of the belt 5 there are cylindrical protrusions (bonks) 9 and shoulders 10 for fixing the position of the springs of the spring set. The frame has inclined belts 11, which have a closed section and which, together with the walls 7 of the opening 1, the cross section of which has a trough shape with some bend inside the ends of the shelves, form essentially symmetrically arranged holes 12 with respect to the transverse axis of the frame with substantially rounded corners. Holes 12 provide the ability to inspect and replace brake pads during operation of railway carts. The frame also has internal jaws 14, which are connected to the belts 11 and which, together with the external jaws 4 and the supporting surfaces of the belt 3, form an opening 2. The belt 3 in the region of the opening 1 for the central spring set has a closed oval section with local openings along the lower face. In the area of the hole 12, it has a trough-like shape with some bend inside the ends of the shelves, and in the area of the openings 2 - a rectangular closed section.

Further, as can be seen from FIGS. 2 and 3, in the cantilever part of the side frame inside the girdle 3, at the place of its transition into the external jaw 4, the first tide 15 of metal is made in the form of a pyramid, the apex of which faces the wall mating angle.

Further, as can be seen from Figs. 4 and 5, from the side of the hole 12 on the wall 7 of the opening 1, local metal thickenings 16 are made in the form of two protrusions. Moreover, on one side of the longitudinal axis of the side frame, the thickness S _{1 of the} local thickenings 16 of the metal increases in the direction from the specified longitudinal axis, and the width S _{2 of the} local thickenings 16 of the metal increases towards the center between them and in the direction from the specified longitudinal axis. Also, between the local thickenings 16 of the metal made a jumper 17 in the form of local thickening of the metal. From the side of the hole 12 on the platform 8 for mounting the friction plate, a second tide 18 of metal is made in the form of a column (see Fig. 7). In this case, the thickenings 16 of the metal are made essentially symmetrical with respect to the second tide 18 of the metal.

Further, as can be seen from Fig.6 and 8, the shoulders 10 in the lower corners of the opening 1 are made in such a way that they are not conjugated with the radius of transition of the supporting platform 6 into the vertical walls 7.

LIST OF POSITIONAL DESIGNATIONS

1 - spring aperture for spring kit;

2 - axle box opening for axle box;

3 - upper belt;

4 - an external jaw;

5 - lower belt;

6 - reference platform of the lower zone;

7 - vertical walls of the spring opening;

8 - platform for mounting the friction bar;

9 - cylindrical protrusions (bonks);

10 - beads;

11 - an inclined belt;

12 - hole;

13 - supporting surface of the upper zone;

14 - an internal jaw;

15 - a tide of metal in the inner part of the upper girdle in the cantilever part of the side frame when the upper girdle passes into the outer jaw;

16 - local thickening of the metal in the form of two protrusions on the inner side of the vertical wall of the spring opening;

17 - jumper between two protrusions in the form of local thickening of metal in the upper part of the casting;

18 is a tide of metal in the form of a column from the back of the platform for attaching a friction strip in the upper part of the casting;

S ₁ - the thickness of the protrusions 16;

S ₂ - the width of the protrusions 16.

Claims (4)

1. The side frame of the railroad car truck, which contains a spring opening (1) for the spring set, formed by the upper belt (3) with cantilever parts forming the outer jaw (4), the lower belt (5) of a closed section with a support platform (6) for spring set and vertical walls (7) with a platform (8) for attaching a friction plate connecting the upper belt (3) and the lower belt (5), the specified side frame also contains axle openings (2) for axle boxes of wheel pairs formed by external jaws (4) supporting surfaces by means of (13) the upper belt (3), as well as the internal jaws (14) connected to the inclined belts (11), while the vertical walls (7) of the spring opening (1) for the spring set, the inclined belts (11) and the upper belt (3) form holes (12) substantially symmetrically arranged relative to the transverse axis of the frame, having a substantially triangular shape, while in the lower corners of the spring opening (1) there are collars (10) for the spring kit to fix the position of the spring springs kit, characterized in that in the console part inside the top of the belt (3) at the place of its transition into the external jaw (4), the first tide (15) of metal was made, from the side of the hole (12) on the vertical wall (7) of the spring opening (1) for the spring set, local thickenings (16) of metal were made , between the local thickenings (16) of the metal, a jumper (17) is made, from the side of the hole (12) on the platform (8) for securing the friction plate, a second tide of metal (18) is made, and the shoulders (10) are made so that they are not mated with the radius of transition of the support platform (6) into the vertical walls (7). 2. The side frame according to claim 1, characterized in that the first tide (15) of metal is made in the form of a pyramid, the apex of which is facing the mating angle of the walls of the cantilever part of the frame, local thickenings (16) of metal are made in the form of protrusions, a jumper (17) made in the form of local thickening of the metal, and the second tide (18) of metal is made in the form of a column. 3. The side frame according to claim 1, characterized in that on one side of the longitudinal axis of the side frame, the thickness S _{1 of the} local thickenings (16) of the metal increases in the direction from the specified longitudinal axis, and the width S _{2 of the} local thickenings (16) of the metal increases in the direction to the center between them and in the direction from the specified longitudinal axis. 4. The side frame according to claim 1, characterized in that the local thickenings (16) of the metal are made essentially symmetrically with respect to the second tide (18) of the metal.