RU218812U1 - PIVOT BEAM OF A THREE-AXLE TROLLEY OF A RAILWAY FREIGHT CAR - Google Patents

Abstract

The utility model relates to the design of three-axle freight car bogies, in particular to the design of the pivot beam of a three-axle bogie of a freight railway car. The technical result achieved by the utility model is to increase the reliability of the pivot beam. The pivot beam of a three-axle bogie of a freight railway car, containing two longitudinal parts and one transverse part, forming an H-shaped casting, each longitudinal part and the transverse part include side walls, upper and lower shelves, the transverse part contains a thrust bearing place, each longitudinal part contains holes for fasteners connecting the bolsters with the pivot, the jaws designed to accommodate the bolsters between them, and the platform for the bearing, the lower surface of the platform for the bearing and the side wall of the longitudinal part are connected by stiffeners, technological windows are made under the platform for the bearing, differs in that the technological the windows under the bearing platform are formed by the contour of the stiffening ribs. 3 ill.

Description

The utility model relates to the construction of three-axle freight car bogies, in particular to the design of the pivot beam of a three-axle bogie of a freight railway car.

From the patent of the Russian Federation No. 2726509 for the invention, a three-axle bogie of a high-speed freight car is known, containing a frame consisting of two sidewalls connected by crossbars, based through a spring suspension on the axleboxes of the wheel pairs, and to the sidewalls in the openings between the wheel pairs, pallets are pivotally suspended through pendulum suspensions, on which, through elastic elements, an H-shaped pivot beam rests with elastically closed side bearings and a thrust bearing fixed on it, characterized in that the pallets are made in the form of transverse beams, brackets are installed at the ends of each of them, opposite which elastic transverse stops are fixed on the sidewalls of the frame, consisting of housing with a spring and a rod placed in it, while between each rod and the bracket there is a gap Δ, the value of which is from 20 to 30 mm, and on the vertical walls of the crossbars from the side of the middle wheelset, longitudinal stops are fixed through elastic gaskets, interacting with the corresponding polished plates installed in response places of the end parts of the H-shaped pivot beam, while the support of the end parts of the H-shaped pivot beam on the transverse beams is carried out through sets of elastic elements of various stiffness installed on the transverse beams with the possibility of interacting with the end parts of the H-shaped pivot beam beams, moreover, the elastic elements of high rigidity are made below the elastic elements of low rigidity with the possibility of interacting with the end parts of the H-shaped pivot beam after compression of the elastic elements of low rigidity by at least 10 mm.

The disadvantage of the solution according to patent No. 2726509 is the insufficient reliability of the pivot beam.

From the source “Drawings of spare parts for 1524 mm gauge railway cars. Chassis, shock devices and shock absorbers of transition platforms. Moscow, "Transport", 1970" known connecting beam, selected for the prototype.

The disadvantage of the prototype is the lack of reliability of the pivot beam.

The technical problem solved by the proposed utility model is the insufficient reliability of the pivot beam.

The technical result achieved by the utility model is to increase the reliability of the pivot beam.

The technical result is achieved due to the fact that in the pivot beam of a three-axle bogie of a freight railway car, containing two longitudinal parts and one transverse part, forming an H-shaped casting, each longitudinal part and the transverse part include side walls, upper and lower shelves, the transverse part contains thrust bearing place, each longitudinal part contains holes for fastening connecting the bolsters with the pivot, jaws designed to accommodate bolsters between them, and a platform for a bearing, the lower surface of the platform for the bearing and the side wall of the longitudinal part are connected by stiffening ribs, under the platform for the bearing technological windows are made, according to the utility model, the technological windows under the platform for the side bearing are formed by the contour of the stiffening ribs.

The claimed utility model is illustrated by figures.

Figure 1 shows a General view of the pivot beam, top view

Figure 2 shows a General view of the pivot beam, side view,

Figure 3 shows a section of the pivot beam with ribs under the platform for the side bearing.

Positions on figures:

1 - longitudinal part,

1.1 - side wall of the longitudinal part,

1.2 - upper shelf of the longitudinal part,

1.3 - a platform for a slipper,

1.4 - technological window under the platform for the bearing, in the side wall of the longitudinal part,

1.5 - stiffener connecting the bottom surface of the platform for the bearing and the side wall of the longitudinal part,

2 - transverse part,

3 - jaws designed to accommodate bolsters between them

4 - holes for fastening connecting the bolsters with the pivot,

5 - bearing place.

The inventive pivot beam of a three-axle bogie of a freight railway car contains two longitudinal parts 1 and one transverse part 2, forming an H-shaped casting. Each longitudinal part and transverse part includes side walls, upper and lower shelves. The transverse part 2 contains a thrust bearing place 5. Each longitudinal part 1 contains holes for fastening 4 connecting the bolsters with the pivot, jaws 3, designed to accommodate bolsters between them, as well as a platform 1.3 for a side bearing. Platform 1.3 for the bearing is located in the central part of the upper shelf 1.2 of the longitudinal part 1. The lower surface of the platform 1.3 for the bearing and the side wall 1.1 of the longitudinal part 1 are connected by stiffeners 1.5. Technological windows 1.4 are made for the bearing platform 1.3. Technological windows 1.4 under the platform 1.3 for the bearing formed by the contour of the ribs 1.5.

The technical solution, in which the technological windows 1.4 under the platform 1.3 for the bearing are formed by the contour of the stiffeners 1.5, allows you to increase the rigidity in this place. Considering that these ribs reinforce the place where the increased load created by the bearings falls, such an increase in rigidity makes it possible to increase the reliability of the pivot beam. In addition, this design is optimal and ensures the absence of defects in the manufacture of the pivot beam by casting, which also increases the reliability of the pivot beam.

Pivot beams were made, in which the technological windows 1.4 under the platform 1.3 for the side bearing were formed by the contour of the stiffeners 1.5. Experimental work confirmed the increase in reliability - the pivot beam withstood increased loads.

Thus, the claimed utility model makes it possible to increase the reliability of the pivot beam by increasing the rigidity at the installation sites of the side bearings, while ensuring the absence of defects in the manufacture of the pivot beam by casting.

Claims (1)

The pivot beam of a three-axle bogie of a freight railway car, containing two longitudinal parts and one transverse part, forming an H-shaped casting, each longitudinal part and the transverse part include side walls, upper and lower shelves, the transverse part contains a thrust bearing place, each longitudinal part contains holes for fasteners connecting the bolsters with the pivot, the jaws intended for placing bolsters between them, and the platform for the bearing, the lower surface of the platform for the bearing and the side wall of the longitudinal part are connected by stiffeners, technological windows are made under the platform for the bearing, characterized in that the technological the windows under the platform for the side bearing are formed by the contour of the stiffening ribs.

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