RU2008105201A

RU2008105201A - COMBINED ROLLING BEARING SEPARATE

Info

Publication number: RU2008105201A
Application number: RU2008105201/11A
Authority: RU
Inventors: Борис Васильевич Гонченко (RU); Борис Васильевич Гонченко; Иршат Атауллович Махмутов (RU); Иршат Атауллович Махмутов
Original assignee: Общество с ограниченной ответственностью научно-производственное объединение "ИНТЕРМАШ" (RU); Общество с ограниченной ответственностью научно-производственное объединение "ИНТЕРМАШ"
Priority date: 2008-02-11
Filing date: 2008-02-11
Publication date: 2009-08-20
Also published as: RU2391575C2

Abstract

Комбинированный подшипник качения бессепараторный, содержащий наружное кольцо, которое совмещено со свободным кольцом упорного подшипника, внутреннее кольцо и тугое кольцо упорного подшипника, размещенные между ними тела качения, выполненные в виде роликов двухступенчатого типа на участке радиального подшипника, большая ступень роликов верхнего яруса, имеющая четыре участка, контактирует только с дорожкой качения наружного кольца по линии, а большие ступени роликов нижнего яруса своими тремя участками контактируют только с дорожкой качения внутреннего кольца по линии, а меньшие ступени верхнего яруса, выполненные с тремя участками, контактируют по линии с большими участками роликов нижнего яруса, а наружное кольцо установлено на тела качения с предварительным натягом, а между тугим кольцом и участком свободного кольца расположены в два ряда конические ролики, контактирующие с дорожками качения и между собой, при этом контакт между роликами проходит по трем линиям с углом контакта, равным 120° между роликами, образуя единый замкнутый кольцевой комплект из конических роликов, а плоскость линейных контактов роликов одного ряда со вторым проходит, например, по продольной оси симметрии упорного участка комбинированного подшипника, конические ролики выполнены с подпятниками, которые контактируют с упорным высоким бортом колец, при этом подпятники расположены на оси вращения конических роликов и выполнены сферическими с постоянной и одинаковой частотой вращения, при этом на участке радиального подшипника качения должно выполняться условие сборки подшипника: ! , ! где D1m - диаметр дорожки качения наружногA combined non-separating rolling bearing, comprising an outer ring that is aligned with the free ring of the thrust bearing, an inner ring and a tight ring of a thrust bearing, rolling elements between them, made in the form of two-stage type rollers in a radial bearing section, a large step of the upper tier rollers having four section, in contact only with the raceway of the outer ring in a line, and the large steps of the rollers of the lower tier with their three sections in contact only with the track the inner ring is rolling along the line, and the lower stages of the upper tier, made with three sections, are in contact with the large sections of the lower tier rollers in the line, and the outer ring is mounted on the rolling bodies with a preload, and are arranged in two rows between the tight ring and the free ring section conical rollers in contact with the raceways and with each other, while the contact between the rollers passes through three lines with a contact angle equal to 120 ° between the rollers, forming a single closed ring set of conical rollers, and the plane of the linear contacts of the rollers of one row with the second passes, for example, along the longitudinal axis of symmetry of the thrust section of the combined bearing, the tapered rollers are made with thrust bearings that are in contact with the thrust high bead of the rings, while the thrust bearings are located on the axis of rotation of the conical rollers and made spherical with a constant and the same speed of rotation, while the condition for the assembly of the bearing must be fulfilled in the area of the radial rolling bearing:! ! where D1m is the diameter of the outer raceway

Claims

A combined non-separating rolling bearing, comprising an outer ring that is aligned with the free ring of the thrust bearing, an inner ring and a tight ring of a thrust bearing, rolling elements between them, made in the form of two-stage type rollers in a radial bearing section, a large step of the upper tier rollers having four section, in contact only with the raceway of the outer ring in a line, and the large steps of the rollers of the lower tier with their three sections in contact only with the track the inner ring is rolling along the line, and the lower stages of the upper tier, made with three sections, are in contact with the large sections of the lower tier rollers in the line, and the outer ring is mounted on the rolling bodies with a preload, and are arranged in two rows between the tight ring and the free ring section conical rollers in contact with the raceways and with each other, while the contact between the rollers passes through three lines with a contact angle equal to 120 ° between the rollers, forming a single closed ring set of conical rollers, and the plane of the linear contacts of the rollers of one row with the second passes, for example, along the longitudinal axis of symmetry of the thrust section of the combined bearing, the tapered rollers are made with thrust bearings that are in contact with the thrust high bead of the rings, while the thrust bearings are located on the axis of rotation of the conical rollers and made spherical with a constant and the same speed, while the condition of the bearing assembly must be met on the section of the radial rolling bearing:

,

where D1m is the diameter of the raceway of the outer ring;

Dwm2 - a large step of the upper tier roller;

d1m is the diameter of the raceway of the inner ring;

Dwm1 - a large step of the lower tier roller,

and the outer ring contains two protective washers on the radial section of the bearing and two washers on the section of the thrust bearing - at the top there is a lock washer with a ring of stiffness and an additional washer at the bottom, and on the outer surfaces of the rings are made, for example, three recesses and grooves, and grooves in smaller steps the rollers of the upper tier include three sections of large steps of the rollers of the lower tier, while the diameters of the three sections of large steps of the lower tier in contact with the three sections of the lower steps of the rollers of the upper tier are equal, and all the rollers to the upper and lower tiers are in contact with each other and raceways in three lines, forming a power single closed annular set of rollers of the upper and lower tiers, characterized in that at least three or all of the rollers of the upper tier are made the axis of the roller are thrust bearings, of a spherical type, for example, on one side, which contact the flange of the outer ring, while the lower protective plate of the thrust bearing portion is made, for example, of a bellows type, and the rollers of the lower tier are made short.