RU32065U1 - Replaceable protective pad for axle box - Google Patents

Description

MKI B61F15 / 12

REPLACEMENT PROTECTIVE COVER OF A BEECH NROEM

The invention proposed is related to railway transport, and specifically, to devices for restoring a worn-out part of the axle opening of the side frames of freight carriages.

The lateral frames of the trucks of freight railway cars are one of the nodes of the rolling stock operating in difficult conditions, from which the safety of movement is dependent on.

A method for reconditioning parts is not known, in which a preformed shell is installed and fixed by welding on the part of the part (see AS USSR No. 789253, MKI V23K9 / 04, 1979), however, the use of this snosob requires a lot of labor, especially when restoring uneven wear in large areas.

Also known is the over-slip pad for the side frame of the freight wagon truck (see RF patent No. 2156681 “Method for restoring the supporting surfaces of the song parts of freight cars, published in bulletin No. 27, 2000), made of sheet steel in the form of a supporting surface with inlets for bending to side walls equal to at least 1/2 of the wall thickness located at the support surface, which is installed in a state heated to the forging temperature and deposited with a uniformly distributed static load to a thickness equal to the floor deflection the bearing surface is reduced from the nominal size in the direction of load application simultaneously with the bending of the nanosets, then they unload the part and guide the nesting to the edges of the lining by lipia mating with the walls of the part. The application of this method also requires large labor costs and affects the maintainability of the part in the area of the axle box opening.

The prototnp is taken by a wear-resistant plate made of sheet steel, made in the form of an over-box support of the surface of the side frame and secured by welding to the copy of this surface (see Nranov A.A., Shanaurin. A.M. machine building, No. 10, 2000, p. 32). The disadvantage of this solution is the need to weld the lining to the side surface of the side frame with extended welded seams near the zones experiencing in the process

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there is a need to weld the lining to the supporting surface of the side frame with extended welds near the zones, which undergo high cyclic and shock loads during operation, and stresses from which often coincide in sign with thermal stresses from welding, and, when combined with them, reduce the operational reliability of the part. In addition, the welding does not allow the flaw detection of the over-box wall of the side frame, which worsens its repairability.

The objective of the invention is to reduce the complexity and increase the quality and efficiency of restoration of body parts.

To accomplish this task, a removable snap-on pad for the axle box is made of sheet steel and has a working horizontal surface that coincides in contour with the over-axle bearing surface. New is that it has a trapezoidal cross-section, its side walls adjacent to the supporting surface of the trolley are made with clamping petals, in which there are holes coaxial with the technological holes of the side frame of the carriage trolley, and, to impair the manufacturability of assembly and removal of the lining, the edges of the petals are bent outward.

In FIG. 1 of the accompanying drawings shows a removable protective pad, a plan view;

In FIG. 2 - overlay, side view;

In FIG. 3 - pad, rear view;

In FIG. 4 - overlay, top view;

In FIG. 5 - pad assembly with the side frame of the wagon trolley.

Installation of the lining in the working position is carried out as follows.

An interchangeable protective 2 overlay is applied to the axle openings of the side frame 1 so that the bearing surface of the axle opening N coincides with its horizontal working surface, then a pin 4 is inserted into the holes made in the clamping petals 3 of the package simultaneously passing through the side holes of the coaxial technological holes frames of the carriage carriage and are pulled together by fastening elements 5.

Claims (1)

Replaceable protective overlay of axle box made of sheet steel and having a working horizontal surface coinciding in contour with the over-axle bearing surface, characterized in that the overlay has a trapezoidal cross-section, its side walls are made with pressure lobes in which there are holes aligned with the technological openings of the side frame of the wagon, and to ensure the manufacturability of the assembly and removal of the lining, the edges of the petals are bent outward.