RU173126U1 - OVERBOARD LAYING OF THE SIDE FRAME OF THE CAR - Google Patents

Abstract

The utility model relates to structural elements of freight wagon trolleys, in particular, to the manufacture and restoration of load-bearing parts of freight wagons with supporting surfaces operating under sliding friction and shock loads, to increase the wear resistance of the over-slip surface of the side frame by improving the design of the over-slip lining of such a frame. The side frame of the carriage trolley made of steel has a curved shape and consists of a base and branches protruding upward from the opposite sides of the base, while a wear-resistant plate of steel of the following composition is attached to the working surface of the base,%: C 0.28 - 0.34, Si 0.9 - 1.2, Mn 0.8 - 1.1, Ni up to 0.3, S up to 0.025, P up to 0.025, Cr 0.8 - 1.1, Cu to 0.3, C 0.28 - 0.34, iron (Fe) and impurities - the rest. Wear-resistant plate can be attached to the base surface by welding in protective gas. The technical result is the strengthening of the lining as a whole, the working surface of the lining, optimization of the application method wear-resistant plate on the pad. 5 ill.

Description

The utility model relates to structural elements of freight wagon trolleys, in particular, to the manufacture and restoration of load-bearing parts of freight wagons with abutment surfaces operating under sliding friction and impact loads, to increase the wear resistance of the over-box surface of the side frame by improving the design of the over-box lining of such a frame.

For the purposes of this application, the term "trolley" without special reservations is understood as "truck wagon."

A solution is known for a removable cover plate (replaceable platband) according to the invention patent RU 2229401 (application 2002124182), according to which a sheet of steel sheet with wear-resistant and spring-like properties is protected, having a working horizontal plane of trapezoidal shape, coinciding in contour with the over-bearing bearing surface, to the beveled sides which adjoins inlets for bending beyond the contour of the supporting surface with a height of at least 1/2 of the thickness of the overboard wall, and the parts fixed on the side walls, characterized in that in the area corresponding to In addition to the box section of the end part of the part with technological holes in the side walls, the plate has vertically oriented S-shaped clamps spaced at least half the tolerance on the width of the end part of the part at the bottom and paired with a horizontal plane of radius equal to this removal, in the middle part of which holes are made, located coaxially with the technological holes, smaller in comparison with the latter diameters, the edges of which are concave into the lining spherically th surface and the top edge of the clamp are bent from the side walls of the items within the width of the bottom of the laths, wherein the horizontal plane with an overlap and lower S-shaped clamps heat treated by quenching and tempering regimen.

The disadvantage of this strap (lining, platband) is that its execution is assumed to be from a single sheet of metal, and therefore, in general, the material properties coincide both in the place of holding (pressing) the lining on the frame (clamps, branches), and in the place of maximum load (work plane).

As the closest analogue, the solution of a removable cover plate (replaceable platband) is proposed according to the invention patent RU 2200681 (application 2001101657) for a railway carriage trolley containing wheel pairs with axle assemblies, which take the load from the trolley frame, which are overlays with wear-resistant plates located between horizontal support plates the surfaces of the overbook openings and axle boxes, have branches protruding upward from opposite sides of the base of removable platbands, bent at the level of the technological openings, in about the internal cavities of the side frames (such branches can have a trapezoidal shape).

The advantage of the closest analogue is the strengthening of the working surface of the lining by means of a wear-resistant plate. The disadvantage is the failure to indicate the material used for the manufacture of this device, as well as the uncertainty of the technology for applying a wear-resistant plate to the plate.

The technical result of the proposed utility model is to strengthen the lining in general, the working surface of the lining, optimizing the method of applying a wear-resistant plate to the lining.

The specified technical result is achieved due to the fact that the removable over-slip pad of a curved shape is steel and consists of a base and branches protruding upward from opposite sides of the base (on the sides), while a wear-resistant plate made of 30KhGSA steel is attached to the working surface of the base, i.e. steel of the following composition in% of material:

FROM 0.28-0.34, Si 0.9-1.2, Mn 0.8-1.1, Ni up to 0.3, S to 0.025, P to 0.025, Cr 0.8-1.1, Cu up to 0.3, FROM 0.28-0.34,

Iron (Fe) and impurities - the rest.

Thus, the overlay (platband) consists of a housing and a wear-resistant plate.

The best way to attach the plate is welding in shielding gas (s).

Branches (laps) may have clamping bends inward at the ends for better attachment to the holes of the side frame.

The lining body is steel and can be made of steel grade St. 3 according to GOST 380-2005.

The list of images (drawings):

FIG. 1 - over-slip pad assembly, side view;

FIG. 2 - over-slip pad assembly, view from the side of the working surface;

FIG. 3 - over-slip pad assembly, front view;

FIG. 4 - lining case without plate, side view;

FIG. 5 - over-slip pad assembly, general view.

In FIG. 1, 2 and 3 it can be seen that the plate has a horizontal working plane 2, to which curved branches (laps) 3 are adjacent to the sides, while a wear-resistant plate 5 is applied to the working plane 2.

In FIG. 4 is a side view of a cover body without a plate.

In FIG. 5 shows an embodiment when the branches (laps) 3 have clamping bends at the ends inward 4 for attachment to the holes of the side frame (not shown).

Basic principles for using the product.

The axle box is a protective, replaceable, consumable element of the frame of the wagon trolley. During repairs of the trolley frame, the cover is removed and after checking the cover and flaw detection of the over-box wall, it is put back in place or replaced with another (serviceable) cover.

Claims (4)

1. The over-slip pad of the side frame of the wagon carriage made of steel has a curved shape and consists of a base and branches protruding upward from opposite sides of the base, while a wear-resistant plate of steel of the following composition is attached to the working surface of the base,%: FROM 0.28-0.34 Si 0.9-1.2 Mn 0.8-1.1 Ni up to 0.3 S up to 0.025 R up to 0.025 Cr 0.8-1.1 Cu up to 0.3 FROM 0.28-0.34 Iron (Fe) and Impurities Rest 2. Over-slip pad according to claim 1, characterized in that the wear-resistant plate is attached to the working surface of the base by welding in protective gas. 3. Overhead pad according to claim 1 or 2, characterized in that each of the branches has a clamping bend inward.

Images