RU83562U1 - RADIAL ROLLER BEARING - Google Patents

Abstract

A radial roller bearing containing an inner ring, an outer ring, cylindrical rollers, a cage, characterized in that the outer ring is double-breasted, the inner ring is flanged with an inner ring width exceeding the width of the outer ring, and with straight chamfers at the edges of the inner hole, the cage from bronze coated with silver and with thirty rectangular sockets stretched in rectangular section under cylindrical rollers located in the nests of the separator guided by the sides of the ring n outer, inner ring, outer ring and cylindrical rollers subjected to high temperature tempering.

Description

The invention relates to the field of mechanical engineering, in particular to roller bearings.

The closest analogue is a roller bearing containing an inner ring, outer ring, rollers, cage (see, for example, the description of the invention to the copyright certificate SU 1674604 F16C 19/00, publication date 09/27/2006).

The disadvantage of the closest analogue is the lack of reliability due to stress concentration in the contact of the roller with the inner ring.

The technical result of the claimed solution is to increase reliability by eliminating stress concentration and improving the lubrication conditions of the ends of the rollers with the guide rails of the outer ring.

The essence of the technical solution is characterized in that it contains an inner ring, an outer ring, cylindrical rollers, a separator, characterized in that the outer ring is double-breasted, the inner ring is flanged with an inner ring width exceeding the outer ring width and with straight chamfers at the edges of the inner hole, the separator made of bronze coated with silver and with extended, rectangular cross-section with thirty sockets for cylindrical rollers located in the nests of the separator, the outer flanges of the ring, an inner ring, an outer ring and cylindrical rollers are subjected to high-temperature tempering.

The essence of the technical solution is illustrated by the drawing, where in figure 1

sectional view is shown.

The radial roller bearing contains an inner ring 2, an outer ring 1, cylindrical rollers 3, a cage 4 (figure 1). The outer ring 1 is double-breasted. The inner ring 2 is made flangeless with a width of the inner ring 2 greater than the width of the outer ring 1 and with straight chamfers at the edges of the inner hole. The separator 4 is made of bronze coated with silver and with thirty rectangular sockets stretched out in a rectangular cross section for cylindrical rollers 3, which are located in the nests of the separator 4, guided by the sides of the outer ring 1. The inner ring 2, outer ring 1 and cylindrical rollers 3 are subjected to high temperature tempering.

The claimed bearing was made with an outer diameter of the outer ring of 1345 mm with a tolerance of -0.028 mm and a width of the outer ring of 1 35 mm with a tolerance of -0.35 mm, with an inner diameter of the inner ring of 2,225 mm with a tolerance of -0.025 mm with thirty rollers 3 sizes 25 × 25 mm in an amount of 30 pieces. The shape of the rollers 3, the shape of the raceways of the outer ring 1 and the inner ring 2 are determined by optimizing dimensions according to well-known calculation methods (see, for example, Balyakin V.B. Zhilnikov EP, Samsonov VN, Makarchuk VV Theory and design of support for rotors of aviation gas turbine engines - Samara: Publishing House of Samar State Aerospace University, 2007, pp. 93-234).

The choice of the diameter of the rollers 3 begins with the minimum acceptable standard value determined by the source data. From the diameter of the roller, using standard bearing size ratios, find the length of the roller, the outer and middle diameters of the bearing and the number of rollers acceptable under the conditions of placement, the obtained values are rounded to standard (see Balyakin V.B. Zhilnikov EP, Samsonov V.N. ., Makarchuk VV Theory and design of support for aircraft rotors

GTD - Samara: Publishing House Samar. state aerospace. University, 2007, pp. 192-195).

The number of cylindrical rollers 3 with the number of 30 pieces was also selected as a result of optimization in order to ensure durability and reliability at specified loads on the rotation axes.

The radial roller bearing operates as follows. When the inner ring 2 and / or the outer ring 1 rotate, the workload is transferred between the rings 1 and 2 through the cylindrical rollers 3, while the cylindrical rollers 3 are set in motion. Each cylindrical roller 3 rotates around its axis of rotation and all cylindrical rollers 3 move around in a circle together with the separator 4. The separator is located in the outer ring 1 with its guide rails guiding the outer ring 1 provides lubricant to the contact points of the ends of the rollers 3 with the outer ring 1 with selection of supply pressure.

The design of the separator 4, the design of the outer ring 1 and thirty rollers 3 increase the reliability of the bearing by eliminating the stress concentration from the contact area of each roller 3 with the outer ring 1 and improving the lubrication conditions of the ends of the rollers 3 with the guide rails of the outer ring 1 in the area of lubrication of the outer ring one.

Claims (1)

A radial roller bearing containing an inner ring, an outer ring, cylindrical rollers, a cage, characterized in that the outer ring is double-breasted, the inner ring is flanged with an inner ring width exceeding the width of the outer ring, and with straight chamfers at the edges of the inner hole, the cage from bronze coated with silver and with thirty rectangular sockets stretched in rectangular section under cylindrical rollers located in the nests of the separator guided by the sides of the ring n outer, inner ring, outer ring and cylindrical rollers subjected to high temperature tempering.