UA32356U - Center sill of car frame - Google Patents

Abstract

A center-sill of the car frame contains side vertical walls and lower and upper horizontal flanges, which form a box form in the section, carriage elements of automatic couplings installed into the oblong holes in the lower part of the center-sill, and connecting vertical diaphragms located in the locations of center bearers and transverse brackets or frame rails. Connecting vertical diaphragms are made with horizontal sections and are connected by these sections to lower horizontal flange of the center-sill. Oblong holes in the latter are made in the form of cuts in the lower flange on the width of carriage elements, and to the vertical section of connecting diaphragms located in the area of center bearers, horizontal diaphragms-inserts are connected, which form additional connections of side vertical walls with lower horizontal flange through connecting vertical diaphragms and reduce torsion stresses in the areas of center bearers.

Description

The proposed useful model applies to railway transport, mainly to tipper wagons of the "dumpcar" type, as well as to platform wagons with inclined loading platforms for the transportation of wide rolled steel and can be used in the industrial production of these wagons.

A feature of the design of tipper wagons of the "dumpcar" type and platform wagons with inclined loading platforms for the transportation of wide-format rolled products is that their backbone beams are practically load-bearing frames that accept all operational loads, including torsional loads, therefore, increased requirements for strength, reliability and durability are imposed on such backbone beams of frames.

Known from the state of the art, the supporting frame of a dump truck (dump car) type VOS-105 (1), of the Kaliningrad Wagon-Building Plant, includes a box-shaped backbone beam made of rolled profiles - Me55 I-beams, connected to each other by vertical diaphragms, cast car elements of auto couplings and upper and lower reinforcing overlay sheets.

The backbone beam of the railway platform frame (2) is also known, it is also made of a box, formed by a pair of rolling elements, which are rigidly connected to each other by the upper and lower overlay sheets.

However, increasing the carrying capacity of wagons and, accordingly, increasing the strength of the backbone beams is limited by the possibility of using solid-rolled I-beams for their manufacture, which are not produced by the industry with increased height and reinforced shelves, therefore the use of welded I-beams is required.

The lower frame of the dump truck |Z| is known with a ridge beam, the sides of which are made of I-beams of a welded structure with the dimensions required for strength in cross-section and with reinforcement of the sides with upper and lower overlay sheets. A similar ridge beam is also used in the construction of a platform wagon with an inclined floor for the transportation of large-format sheet metal I|4|. These are the designs of the backbone beams of the wagon frame |Z and 4| have a high metal capacity and a large number of welding seams due to overlapping of welded I-beams with welded overlay sheets. In platform wagons for large-format rolled sheet |I4), due to the presence of various brackets located on the backbone beam of the frame, the upper overlay sheet is made of several parts, it is connected to the soles of the frame brackets by transverse welding seams with the fitting of parts, which causes thermal deformations of the structure and forms stress concentrators in particularly loaded parts of the beam. Spinal beams do not have torsional reinforcements in the end parts and areas where the pivot beams are located.

The purpose of the proposed useful model is to increase the manufacturability and reduce the labor-intensiveness of manufacturing the backbone beam and the frame formed by it, which is provided by the possibilities of structural consolidation of the assembly of the improved beam and the streamlining of the welding of known and new elements of the latter, as well as the reduction of metal consumption with increased bearing capacity of the structure.

To achieve the specified tasks in the spinal beam of the frame, which contains side vertical walls and lower and upper horizontal shelves, which create a box shape in section, and carriage elements of auto couplings installed in longitudinal holes in the lower part of the beam, connecting vertical diaphragms are made with horizontal sections and connected by these sections to the horizontal lower shelf, while the longitudinal openings in the lower part of the beam are made in the form of cutouts in the lower shelf along the width of the carriage elements, and horizontal insert diaphragms are attached to the vertical section of the connecting diaphragms located at the location of the pivot beams, which create additional connections of the vertical walls of the connecting diaphragms with the horizontal lower shelf and thereby reduce the torsional stresses in the areas where the pivot beams are located. The vertical connecting diaphragms are made I-shaped and connected by their horizontal sections to the horizontal lower shelf of the beam by spot welding seams made through the holes made in the horizontal lower shelf.

The cutouts in the horizontal lower shelf end in a parabola rounding, and the horizontal diaphragm insert is also made with a similar rounding of the cutout at the free end. In addition, the vertical walls of the beam in the areas of installation of carriage elements and connecting vertical diaphragms located in the locations of the pivot beams of the frame are made thicker in relation to the vertical walls of the middle part of the beam in a ratio of 2:1.5 and are welded to the latter at an inclination in at the same time, the slope of the welding seam on the opposite wall is made in the opposite direction.

The strength indicators of the backbone beams of the frames of various types of wagons are achieved by the thickness of the horizontal overlay sheets and the height of the beam, and for the backbone beams of heavily loaded dumper wagons, also by structural features related to the thickness of the vertical walls and their connection with the beam elements.

The proposed design of the backbone beam of the railway car frame, in its main section, can also be used, in addition to the direct purpose, for railcars-platforms of other purposes, the backbone beams of which are made with a variable height along the length.

Fig. 1 is a general view of the proposed spinal beam, side view with local cuts. The location of the beam elements is shown.

Fig. 2 - the same, top view.

Fig. 3 - the same, bottom view.

Fig. 4 is a cross-section of the spinal beam along A-A in Fig. 1. The connection of vertical walls, horizontal shelves and connecting diaphragms with welding seams is shown.

The proposed spinal beam of the railway car frame is a welded box metal structure, which consists of two side walls (sidewalls) 1, Fig. 1, created from thickened vertical walls 2, Fig. 1-3, located in the end parts of the beam, and vertical walls Z of the middle part of the beam, as well as the upper and lower horizontal shelves, respectively, 4 and 5. The connection of walls 2 and З is made with welding seams. The horizontal upper and lower shelves 4 and 5, together with the vertical sidewalls - walls 2 and C, form a box-shaped beam in cross-section, in which the carriage elements of auto couplings - sockets 6 and rear stops 7, as well as connecting vertical diaphragms 8, Fig. 1, 2 are placed , 4, are placed in the locations of pivot beams and transverse brackets or frame beams (not shown in the drawings - the axes "a" of the pivot beams are indicated). Connecting vertical diaphragms 8 are made with horizontal sections, i.e. I-shaped, and are connected by their horizontal sections "g" to the horizontal lower shelf 5, forming a rigid connection of the beam elements in its lower part. The connection of the horizontal sections of the diaphragms with the horizontal lower shelf 5 is made by point welding seams, passed through circular holes 9 in the lower shelf 5. Longitudinal holes in the lower shelf 5 for installing carriage elements are made in the form of "v" cutouts, Fig. 3, in width these car elements, and to the vertical section of the connecting diaphragms 8, placed symmetrically to the axis "a" of the pivot beams. Horizontal diaphragms-inserts 10 are attached to the vertical walls 2, Fig.1 and C, designed to reduce the torsional stress in the end parts of the beam. Cuts "in" in the horizontal lower shelf 5, Fig. 3, end by being rounded in the form of a parabola. The horizontal diaphragm-insert 10 is also made with a cutout at the free end in the form of a parabola. From the ends of the beam to the places of installation of the connecting diaphragms 8, located in the areas of the pivot beams, the vertical walls 2 are thickened in relation to the vertical walls of the middle part of the beam in a ratio of 2:1.5. The latter are welded together at an angle of 60" to the horizontal, while the seam on the opposite wall is made inclined in the opposite direction.

The assembly of the spinal beam begins in an inverted view with the assembly of the beam frame, which includes the upper shelf 4, Fig. 1, the side walls 1 and the connecting vertical diaphragms 8. At the same time, the shelf 4 and the side walls 1 are connected only by internal welding seams "b", Fig. 4, as well as walls 2 and Z sidewalls between themselves. The external welding seams connecting the vertical walls 2 and З with each other, as well as with the horizontal shelves 4 and 5, are performed by automatic welding with a beam inclination of 45". The necessary strength of the box beam under vertical loads is provided by its height "H" with the required thickness "t" of the upper and lower shelves, and in the case of torsion, the presence of additional reinforcing horizontal diaphragms-inserts 10 and strengthening of the vertical walls at the ends of the beam.

The applicant company has developed working drawings of the proposed backbone beam of the railway car frame, in order to improve dump cars (dump trucks), to ensure more economical production of backbone beams in-house. The patent-pending design of the backbone beams is offered to wagon-building enterprises for other types of wagons as well.

Sources of information: 1. "Wagons of industrial transport", V.G. Kalmykov and A.G. Kovalev, "Transport", 1978, pp. 140-142 (level of technology). 2. Patent of the Russian Federation Mob2075 for the utility model "Spinal beam of the railway platform frame", Vb1E1/2 IPC (2006). 3. Patent of Ukraine Me11547 for the utility model "Lower frame of a dump truck", B6109/8 IPC (2006). 4. Application for utility model Meg0200706970 "Wagon-platform for wide-format sheet rolling" dated 06.21.07. in the city of 3 Ya. in -8 rods and same you and ram vu

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Claims (5)

1. Spinal beam of the frame of a railway car, which contains side vertical walls and lower and upper horizontal shelves that create a box shape in section, car elements of auto couplings installed in longitudinal holes in the lower part of the beam, and connecting vertical diaphragms placed in the locations of pivots beams and transverse brackets or beams of the frame, which is distinguished by the fact that the connecting vertical diaphragms are made with horizontal sections and are connected by these sections to the lower horizontal shelf of the beam, the longitudinal openings in the latter are made in the form of cutouts in the lower shelf along the width of the car elements, and to horizontal diaphragms-inserts are attached to the vertical section of the connecting diaphragms located at the location of the pivot beams, which create additional connections of the side vertical walls with the lower horizontal shelf through the connecting vertical diaphragms and reduce torsional stresses at the locations of the pivot beams. 2. Spinal beam of the frame of the railway car according to point I, which differs in that the connecting vertical diaphragms are made I.-shaped and are connected by their horizontal sections to the horizontal lower shelf by spot welding seams made through holes in the latter. 3. The spinal beam of the frame of the railway car according to claims 1 1 2, which is characterized by the fact that the cutouts of the longitudinal holes in the horizontal lower shelf end by being rounded in the form of a parabola, and the horizontal diaphragm-insert is made with a cutout at the free end with a rounding similar to the cutout in the bottom shelf. 4. Spinal beam of the railway car frame according to claims 1, 2 1 3, which differs in that the side vertical walls in the areas of installation of car elements of auto couplings and connecting vertical diaphragms, located in the locations of the pivot beams of the frame, are made thicker in relation to the vertical walls of the middle parts of the beam in the ratio of 21.5 1 welded with the latter at an angle. 5. The backbone beam of the railway car frame according to claims 1 1 4, which differs in that the slopes of the welding seams of the vertical walls are made at 607 to the horizontal, while the slope of the welding seam on the opposite wall is made in the opposite direction.