RU98055U1 - FRICTION BEARING - Google Patents

Abstract

 1. The rolling bearing, containing the outer and inner rings with raceways, rolling elements and a separator with sockets, equipped with cavities for lubricant-cooling substance and channels for supplying the substance to the area of the contact line of the rolling elements with bearing elements, characterized in that in the separator between the nests made intermediate channels in communication with channels for the supply of cutting fluid and cavities for cutting fluid, while the cavity is made in the form of annular grooves located on both sides from the separator sockets, and the coolant supply channels are directed to the area of the contact line of the rolling elements with the raceways of the outer and inner rings. ! 2. The rolling bearing according to claim 1, characterized in that in one of the rings of the bearing channels are made for supplying a cutting fluid in the cavity for cutting fluid.

Description

The utility model relates to the field of mechanical engineering and can be used in high-speed, highly loaded rolling bearings, including in the supports of gas turbine engines (GTE).

Known ball bearing, which contains the outer and inner rings with raceways, a cage with sockets and rolling elements. (N.A.Sherlygin, V.G.Shakhverdov “Design and operation of aircraft gas turbine engines”, Moscow, “Mechanical Engineering” 1969 p. 182 fig. 9.2)

In such bearings, the cutting fluid is supplied under pressure through the nozzles into the gap between the inner ring and the cage, lubricates and cools the working surface of the inner ring of the bearing, the surface of the rolling elements and rises to the surface of the outer ring under the action of centrifugal forces. The disadvantage is that the cutting fluid is supplied to the cavity, and not to the heat release zones, which reduces the cooling efficiency.

Also known is a rolling bearing, which contains the outer and inner rings with raceways, rolling elements and a cage with sockets. The separator is equipped with cavities for cutting fluid and channels for supplying cutting fluid to the area of contact between the rolling elements and the separator. (Copyright certificate No. 1693286557215, class F16C, claimed March 25, 1975)

In such a bearing, the cutting fluid is introduced into the contact areas of the rolling elements with the bearing element - the separator, i.e. directly into the zones of heat generation, however, at high loads and high speeds, the greatest friction and heat generation occurs between the rolling bodies and the rings - along the line of contact, where the lubricant enters only after cooling the separator, which reduces the cooling efficiency.

The technical result, to which the utility model is directed, is the supply of a cooling lubricant to the zones of greatest heat release - the contact line of the rolling elements with the rings.

The specified technical result is achieved in that the rolling bearing contains an outer and inner ring with raceways, rolling elements and a cage with sockets. The separator is equipped with cavities for the lubricating-cooling substance and channels for supplying the substance to the area of the contact line of the rolling elements with bearing elements.

New in the utility model is that in the separator between the sockets there are intermediate channels connected with channels for supplying a cutting fluid and cavities for a cutting fluid. The cavities for the cutting fluid are made in the form of annular grooves and are located on both sides of its separator sockets. The cooling lubricant supply channels are directed to the area of the contact line of the rolling elements with the raceways of the outer and inner rings.

In one of the rings of the bearing, channels are made for supplying a cooling lubricant to a cavity for a cooling lubricant.

The accompanying drawings depict the proposed rolling bearing.

Figure 1 - rolling bearing, General view;

Figure 2 - section aa of figure 1.

The rolling bearing contains an outer ring 1 and an inner ring 2 with raceways 3 and 4, the rolling elements 5 and the separator 6 with sockets 7. The separator 6 is provided with cavities for the lubricant-cooling substance in the form of ring grooves 8 located on both sides of the sockets 7 of the separator 6, channels 9 for supplying a cooling lubricant to the zone of contact of the rolling elements 5 with raceways 3 and 4 of the outer and inner rings 1 and 2 and intermediate channels 10. Channels 10 are located in the separator 6 between sockets 7 and communicated with channels 9 for supplying lubricating hlazhdayuschego substance and annular recesses 8. The outer ring 1 has channels 11 for supplying the lubricant in the coolant cavity 8 for lubrication.

The air-oil mixture or air, through channels 11 enters the annular grooves 8 and through intermediate channels 10 and supply channels 9, enters the main heat release zone - to the contact line of the rolling elements 5 with the raceways 3 and 4 of the outer 1 and inner 2 rings, effectively removing heat. In addition, the air-oil mixture, passing through the grooves 8 and channels 9, 10, 11, additionally removes heat from the rings 1 and 2 and the separator 6, and also, flowing over the surface of the rolling elements 5, enters the nests 7 of the separator 6, removes heat from rolling elements 5. Next, the air-oil mixture leaves the bearing through the gaps between the rings 1 and 2 and the separator 6.

Due to the fact that the lubricant is brought to the zones of the greatest heat release - to the raceways of the bearing rings, it is possible to cool it effectively, thereby increasing the bearing life.

Claims (2)

1. The rolling bearing, containing the outer and inner rings with raceways, rolling elements and a separator with sockets, equipped with cavities for lubricant-cooling substance and channels for supplying the substance to the area of the contact line of the rolling elements with bearing elements, characterized in that in the separator between the nests made intermediate channels in communication with channels for the supply of cutting fluid and cavities for cutting fluid, while the cavity is made in the form of annular grooves located on both sides from the separator sockets, and the coolant supply channels are directed to the area of the contact line of the rolling elements with the raceways of the outer and inner rings. 2. The rolling bearing according to claim 1, characterized in that in one of the rings of the bearing channels are made for supplying a lubricant-cooling substance in the cavity for a lubricant-cooling substance.