RU2375224C2 - Lengthwise beam of anti-rattle frame (versions) - Google Patents

Abstract

FIELD: railroad equipment.

SUBSTANCE: lengthwise beam comprises transition profile with symmetrically arranged sections of variable box-like cross section. Anti-rattle intermediate bush flanges are welded into jointing element vertical bores, their attachment zones being overlapped by supporting parts of beam. In compliance with first version, beam made from steel strips or bent rolled-form sections a component beam with transition section being produced from thicker sheet metal compared with that of its end rectangular tubes. Transition section is jointed to end tubes by superimposing shelves and walls. In compliance with one more version, composite beam made from steel strips features variable-thickness walls and shelves only at end tubes, while according to another version wherein the beam is made from bent sections, it features symmetrically aligned box-like sections fitted one into another. One of the latter, an inner section, supports jointing elements arranged in attachment zones of intermediate bushes. In compliance with second version, through rectangular tube is made, all along beam length, from thinner sheet metal, namely, from solid steel strips or bent U-sections and aligned with transition section enveloping it. Transition section has its variable-thickness shelves and jointing elements is welded to through tube with its walls making the ribs of transition section to strengthen attachment zones of intermediate bushes.

EFFECT: higher reliability, longer life.

7 cl, 8 dwg

Description

The claimed invention relates to car building, and in particular to nodes of reinforcement of spontaneous frames of subway cars.

Known designs of frames with longitudinal beams described in RF patents Nos. 23423, 27552, 39560, 57695.

Known frame designs have a number of significant structural and operational drawbacks, consisting in the irrational distribution of the mass of metal along the length of the longitudinal beam, and along the cross section at the seal points of spintons, brake brackets, and other power frame elements.

For the prototype according to the first and second options adopted "The longitudinal beam of the spinto frame" (Russian Federation, patent No. 22649, B61F 5/52, publ. 04/20/2002), containing an intermediate box-section profile made in the form of symmetrically located sections (1 ) of variable width, ending at the same time with nozzles made into them, into the vertical holes of which are flanges (7, 8) of spinto intermediate sleeves welded, overlapped along the entire length of their fastening by the reinforcing parts (9) of the beam.

The main disadvantage: the connection of the intermediate sleeve (6) with the nozzle (3) of the intermediate profile when it is insufficient to overlap it with the reinforcing parts (9) along the beam section weakens it in this section. At this point, the lower shelf of the longitudinal beam experiences tensile forces in conjunction with the intermediate sleeves, and these tensile forces can lead to metal fatigue and destruction of the beam.

The task of the invention according to the first and second options is to increase the operational reliability of the longitudinal beams in the nodes of its connection with the intermediate spinton bushings due to a more rational distribution of the mass of metal along the length of the longitudinal beam and its cross section.

Option 1. The essence of the proposal.

The longitudinal beam of the sponton frame contains a transition profile with symmetrically arranged sections of variable box section ending at the same time with connecting elements made with them, flanges of spinton intermediate bushings are welded into the vertical holes of the latter, the fastening zones of which are overlapped by the reinforcing parts of the beam. New is that the reinforcing parts of the beam are made in the form of end rectangular pipes with holes for fixing the intermediate and extreme bushings, the shelves and walls of each end pipe and connecting element are aligned with each other by planes and fastened with intermediate bushings installed in the holes of the double shelves, and side welds made in longitudinal cutouts of the walls of each connecting element.

In addition, the outer wall and the upper shelf of the end rectangular pipe assembled from steel strips has a smaller thickness than the inner wall located on the side of the block of transverse beams, and the lower shelf located on the side of the spintons.

Another feature of this beam is that the connecting element of the transition profile is assembled along with it from bent channels with thickened walls and reinforced from the inside by the shelves and walls of the end rectangular pipe assembled from thin-walled bent channels.

Option 2. The essence of the proposal.

The longitudinal beam of the sponton frame contains a transition profile with symmetrically arranged sections of variable box section ending at the same time with connecting elements made with them, flanges of spinton intermediate bushings are welded into the vertical holes of the latter, the fastening zones of which are overlapped by the reinforcing parts of the beam. New is that the reinforcing parts of the beam are made in the form of a through rectangular pipe with holes for fixing the intermediate and extreme bushings, the shelves of which and the transition profile flanges combined with them by planes are connected by two continuous welding seams located longitudinally in the same plane with the axis of the beam, the shelves of variable width are reinforced from the inside of the transition profile by the shelves of the through pipe overlapping in the connecting elements of the fastening zone of the flanges of the intermediate bushings, m the walls of the connecting elements through the side cuts are welded to the walls of the through pipe with the formation of equal consoles for fastening the extreme spinton sleeves with the through pipe using intermediate sleeves coaxially mounted in the holes of the combined shelves and side welds made in the cutouts of equally thickened walls of the connecting elements and connecting them with a through thin-walled pipe.

In addition, the outer wall and the upper shelf of the through rectangular pipe assembled from steel strips equal to the length of the beam have a smaller thickness than the inner wall located on the side of the block of transverse beams, and the lower shelf located on the side of the spintons.

A feature of this beam is that the lower and upper shelves along the entire length of the transition profile are additionally supported by a thickened lower and thin-walled upper shelves of the through rectangular pipe.

The upper and lower flanges of a through rectangular pipe equal to the length of the claimed beam and the transition profile flanges connected to them by planes are formed by bent channels, interconnected by two continuous welding seams and form box-shaped profiles symmetrically located in one another, of which the inner one has shelves of smaller thickness, than a transition profile.

The technical result is expressed in the following.

Option 1.

The implementation of the reinforcing part of the beam in the form of a double connection of the walls and shelves of the connecting element of the transition profile and the end rectangular pipe, the reinforcing shelves of which are blocked by the fastening zones of the flanges, as well as the connection of the walls of the rectangular pipe by welding with the edges of the side symmetrical cutouts of the rectangular section of this profile provides the same mass beams a decrease in the level of stresses in the indicated sections of the beams and an increase in the stability of its walls in joints with intermediate spy bushings ntons. This will increase the operational reliability of the beam and the frame as a whole.

Additional reinforcement of the lower shelf and the inner wall of the rectangular section of the transition profile with thickened lower shelf and the inner wall of the rectangular end pipe, assembled from steel plates of different thicknesses, will allow rational use of the mass of metal along the beam sections.

Assembling a rectangular section of the aforementioned profile along with it from bent channels with thickened walls and reinforcing the transition profile from the inside with shelves of a rectangular end pipe assembled from thin-walled bent channels will allow rational use of the metal mass along the length of the beam and reduce the complexity of its assembly by reducing welding work.

Option 2

The implementation of the reinforcing part of the beam in the form of a double sleeveless connection of the walls and shelves of the rectangular section and the rectangular single pipe passing through the cavity of the transition profile, as well as overlapping reinforcing shelves of the single pipe of the fastening zones of the flanges, the connection of the walls of the single pipe by welding with the brackets of the symmetrical side cutouts of rectangular sections of the transition profile , symmetrical combination of the upper and lower shelves of a single pipe with shelves of variable width, connecting them together horizontally and if the vertical longitudinal welding seam located in a vertical plane with the axis of the beam to increase the bearing capacity of the longitudinal beam and the reliability of its connection with the intermediate shpintonnymi bushings.

Coaxial fastening of the intermediate bushings in the holes of the combined shelves of the transition profile and a single rectangular pipe will increase the bearing capacity of the longitudinal beams and, in general, the rigidity of the entire frame of the trolley.

Additional reinforcement of the lower and upper shelves along the entire length of the transition profile of the thickened lower shelf of a rectangular single pipe and its upper thin-walled shelf will allow for the same mass of the longitudinal beam to increase its rigidity in the middle section.

The assembly of the transition profile and the rectangular sections of a single thin-walled pipe reinforcing it from bent channels, the shelves of which are aligned along the entire length of the transition profile with planes with each other and are assembled symmetrically relative to the beam axis by means of two longitudinal welding seams, will reduce the complexity of manufacturing beams and increase their rigidity in the middle section .

The accompanying drawings depict:

First option.

Figure 1 is a longitudinal beam, side view, the middle part of this beam is made of thicker sheet parts, and the rectangular end pipes are made of thinner steel plates (in this embodiment, the beam is assembled from three groups of mutually extending sheet metal parts);

Figure 2 is a top view of a longitudinal beam;

Figure 3 is a cross section along aa in figure 2 (shows a cross section of a rectangular end pipe made of thin and thickened steel plates);

In Fig.4 is a cross section along aa in Fig.2 (shows a cross section of a rectangular end pipe made of bent channels, the thickness of the shelves of which is less than the wall thickness of the transition profile).

The second option.

Figure 5 - rectangular single pipe, the middle part of which is covered by a transition profile of variable width, made of thicker sheet metal;

Figure 6 is a top view of a longitudinal beam connected rigidly to the block of cross-sectional beams of box section;

Fig. 7 is a cross-section along BB in Fig. 6. (a section of a rectangular single pipe made of thin and thickened longitudinal plates interconnected by longitudinal welds is shown; a section of a transition profile in which thickened shelves of variable width are assembled from previously longitudinal plates welded into the channel, forming a transition profile between themselves, the planes of the shelves of which are aligned with the planes of the shelves of a rectangular single pipe);

On Fig - cross section along BB in Fig.6 (thin-walled shelves of bent channels are butt welded and form shelves of a rectangular single pipe; similarly assembled in the transition profile, shelves of variable width, made broadened in the middle, and formed at the ends of the transition profile rectangular sections with vertical holes made coaxially with the vertical holes of a rectangular single pipe under the flanges of the intermediate bushings).

First option.

The longitudinal beam of the spinto frame contains a transition profile 1 (Fig. 1) of a box-shaped section (Figs. 3, 4), assembled from thickened steel plates or bent channels of the same thickness. Profile 1 has symmetrically located sections 2 of variable box-section, ending at the same time made connecting elements 3 (Fig.2, 6) with lateral longitudinal cutouts 4 (Fig.1, 5), made in its walls 5 (Fig.3, 4). The transition profile has broadened in the middle of the lower 6 and upper 7 shelves (Figs. 1, 5) of variable width, ending in the lower 8 and upper 9 shelves (Figs. 3, 4) of the connecting element 3 (Figs. 2, 6).

In the vertical holes 10 and 11 (Figs. 1, 5) of the connecting elements 3 and the reinforcing parts of the beam, made in the form of end rectangular pipes (Figs. 1, 2), the flanges 13, 14 (Figs. 3, 4) of the intermediate bushings are fixed coaxially 15, 16 (Figs. 3, 4).

The shelves 8, 9 with the fastening zones 17, 18 (Figs. 3, 4) of the flanges 13, 14 are closed by the shelves 19, 20 (Figs. 3, 4) of the end pipe 12 (Fig. 1.), reinforcing the fastening zones of the flanges 13 from the inside 14 intermediate sleeves.

The intermediate bushings are fixed in coaxial holes 10, 11 (Fig. 1) of the combined shelves of the transition profile 1 (Fig. 2) and end pipes 12 of equal length.

The transition profile 1 (figure 1, 2) and the connecting elements 3 are made of sheet metal, equally thickened in comparison with the reinforcing parts of the beam. The latter are in the form of rectangular pipes: through single 21 (figure 5, 6) for the entire length of the claimed beam or two end 12 (figure 1, 2) with vertical holes 10, 11 (figure 3, 4) to reinforce the flanges of the intermediate bushings and with vertical holes 22 and 23 (FIG. 1) for coaxial fastening of the extreme spinton lower 24 and upper 25 bushings (FIG. 1).

The reinforcing part of the beam is made in the form of a double connection of the walls 5 and the shelves 8 and 9 of the connecting element 3 and the rectangular end pipe 12, the reinforcing shelves 19 and 20 (Figs. 3, 4) of which the fastening zones 17, 18 of the flanges 13 and 14 welded into holes of the connecting element 3.

The outer 26 and inner 27 walls of each end rectangular pipe are connected by welding seams 28, 29 with the edges of the side cutouts 4 of the connecting element 3.

The lower shelf 8 and the inner wall 5 'of the connecting element (Fig. 3) are additionally reinforced with thickened lower shelf 19 and the outer wall 26 of the end rectangular pipe assembled from steel plates of different thicknesses.

The connecting element 3 of the transition profile 1, assembled from bent channels (figure 4) with thickened walls in its joints with the flanges 13, 14 of the intermediate sleeves 15, 16 is supported by the flanges 19 and 20 of the end rectangular pipe assembled from thin-walled bent channels.

The shelves 8, 9 of the connecting elements 3 and the shelves 19, 20 of the end rectangular pipe are rigidly interconnected by means of the lower 15 and upper 16 of the bushings coaxially fixed by welding seams.

According to the first embodiment, the longitudinal beam is assembled using a welding machine from steel strips (Fig. 3) of different thicknesses. To do this, the strips are pre-fixed in the conductor, and then they are welded together in two channels: the outer one with the outer wall 26 and the inner one with a thickened shelf 27.

Similarly to that described, two channels of variable width are assembled from steel strips, each ending in protrusions having a cross-section of a channel obtained by welding from three strips.

The ends of the shelves and walls of the outer and inner channels are combined with the inner surfaces of the shelves and the walls of the protrusions, two pairs of intermediate spinton sleeves are installed coaxially aligned with the openings of the double shelves of the assembled box sections, and the fixed components are welded to the longitudinal beam along its entire length.

The transition profile 1 of the box section is assembled from equally thickened steel strips, and the end rectangular pipes extending it are made from steel strips of different thicknesses. As described above, a longitudinal beam of bent channels is assembled.

The second option.

A feature of this embodiment of the longitudinal beam compared to its first version is that the reinforcing part of the beam is made in the form of a through rectangular pipe 21 along the entire length of the beam with lower 30 and upper 31 intermediate holes, with lower 32 and upper 33 end holes (Fig. 5 ) for fastening with snap-joint seams of intermediate 15, 16 and extreme 24, 25 spontaneous sleeves.

Through rectangular pipe 21 is fastened by welding with connecting elements 3 (Fig.6). In the holes 10, 11 (Fig. 1) and 30, 31 (Fig. 5) of the combined shelves 8, 9 (Fig. 3) of each connecting element 3 (Figs. 2, 6) of the shelves 34, 35 (Fig. 8) through rectangular pipe 21 (figure 5) coaxially mounted intermediate sleeve 15 and 16 (figure 4).

In longitudinal cutouts 4 of equally thickened walls 5 (FIG. 4) of the connecting element 3, welds 28 and 29 are made connecting the walls 5 (FIG. 3,4) with a through rectangular pipe 21 (FIG. 6).

The shelves 34, 35 (Figs. 7, 8) of the through pipe 21 are symmetrically aligned with the planes of the shelves 6 and 7 of variable width and are assembled by means of welding seams 36, 37 located in the same plane with the axis of the beam into contour reinforcing profiles.

The outer wall 26 and the upper shelf 35 (Fig. 7) of a through rectangular pipe 21 assembled from six steel strips equal to the length of the claimed beam have a smaller thickness than the inner wall 27 (Fig. 7) located on the side of the block of transverse box-shaped beams 38 , and the lower shelf 34, located on the side of the spintons 39 (figure 1).

Equally thickened shelves 6 and 7 of variable width of the transition profile 1 (Fig. 5) are additionally reinforced with a thickened lower 34 (Fig. 7) and thin-walled upper 35 shelves (Fig. 7) of a through rectangular pipe 21.

The through rectangular pipe 21 (Fig. 5, 6) is assembled from thin-walled, equal to the length of the claimed beam, bent channels 26, 27 (Fig. 8) and is perimetrically covered in the fastening areas of the spinto intermediate sleeves 15, 16 (Fig. 3) by connecting elements 3 (Fig.6) thickened transition profile 1 (Fig.5) and connected to the walls 5 (Fig.4) closed in a circle by welding seams 24, 25 (Fig.5, 6).

According to the second variant, the transition profile is also collected from equally thickened steel strips, and the through rectangular pipe located inside it is assembled from six equal lengths of the entire beam of steel strips of different thicknesses (Fig. 7).

To do this, steel strips are fixed and assembled in a jig using a welding machine in two channels of the same height but different in cross-section: the outer one with a thin-walled shelf 26 and the inner one with a thickened shelf 27 (Fig. 7).

Similarly to that described, two channels of variable width are assembled from steel strips, each ending in protrusions having a cross-section of a channel obtained by welding from three strips of equal thickness. The edges of the shelves and the planes of the combined horizontal walls of the four channels obtained by welding of constant and variable sections are combined with each other and welded into box sections with two longitudinal seams 36 and 37, located in the same plane with the axis of the beam. Two pairs of intermediate spinton sleeves are installed in the coaxially aligned openings of the double shelves of the assembled box section profiles and welded into profiles closed over the section, while the shelves and walls of the protrusions form connecting elements 3 (Fig. 6), covering a rigidly through pipe.

Similarly to that described, a longitudinal beam of bent thin-walled channels is assembled. A thin-walled through pipe assembled from bent channels has longitudinal walls that act as dividing ribs in the transition profile.

Claims (7)

1. A longitudinal beam of a sponton frame containing a transition profile with symmetrically arranged sections of variable box section, terminating at the same time with connecting elements made with them, into the vertical holes of the latter are flanges of spinton intermediate bushings, the fastening zones of which are overlapped by the reinforcing parts of the beam, characterized in that the reinforcing parts the beams are made in the form of end rectangular pipes with holes for fixing the intermediate and extreme bushings, shelves and walls of each tsevoy pipe and the connecting element are aligned with one another and the planes are bonded by means of intermediate sleeves installed in the openings of dual shelves and lateral welds, longitudinal recesses formed in the walls of each coupling element. 2. The longitudinal beam according to claim 1, characterized in that the outer wall and the upper shelf of the end rectangular pipe assembled from steel strips have a smaller thickness than the inner wall located on the side of the block of transverse beams, and the lower shelf located on the side of the spintons . 3. The longitudinal beam according to claim 1, characterized in that the connecting element of the transition profile is assembled at the same time from bent channels with thickened walls and reinforced from the inside by the shelves and walls of the end rectangular pipe assembled from thin-walled bent channels. 4. The longitudinal beam of the spontaneous frame, containing the transition profile with symmetrically arranged sections of variable box section, ending at the same time with connecting elements made with them, the flanges of the spinton intermediate bushings are welded into the vertical holes of the latter, the fastening zones of which are overlapped by the reinforcing parts of the beam, characterized in that the reinforcing parts the beams are made in the form of a through rectangular pipe with holes for fixing the intermediate and extreme bushings, the shelves of which are compatible the flanges of the transition profile with the planes are interconnected by two continuous welding seams located longitudinally in the same plane with the axis of the beam, while flanges of variable width are reinforced from the inside of the transition profile by flanges of the through pipe overlapping in the connecting elements of the fastening area of the flanges of the intermediate bushings, while the walls connecting elements through the side cuts are welded to the walls of the through pipe with the formation of equal consoles for fastening the extreme spinton sleeves with the through pipe via:
intermediate sleeves coaxially mounted in the holes of the combined shelves, and side welds made in cutouts of equally thickened walls of the connecting elements and connecting them to the through thin-walled pipe. 5. The longitudinal beam according to claim 4, characterized in that the outer wall and the upper shelf of the through rectangular pipe assembled from steel strips equal to the length of the beam have a smaller thickness than the inner wall located on the side of the block of transverse beams, and the lower shelf, located on the side of the spintons. 6. The longitudinal beam according to claim 5, characterized in that the lower and upper shelves along the entire length of the transition profile are additionally supported by a thickened lower and thin-walled upper shelves of the through rectangular pipe. 7. The longitudinal beam according to claim 4, characterized in that the upper and lower flanges of the through rectangular pipe equal to the length of the claimed beam and the transition profile flanges combined with them by planes are formed by bent channels, are interconnected by two continuous welding seams and form symmetrically located one and the other box-shaped profiles, of which the inner has shelves of smaller thickness than the transition profile.

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