RU1785563C - Rolling bearing - Google Patents

Description

The invention relates to mechanical engineering, in particular to rolling bearings operating with solid lubricant under conditions of high and low temperatures.

A rolling bearing is known, comprising bodies, rolling elements, separated by a separator with its separating elements, which are connected by means of connecting devices for the possibility of joint rotation to the scrapers located in the grooves of the outer and inner rings intended for moving the solid lubricant powder, having Roller Life 0

The main disadvantage of this known rolling bearing is that in it the coupling devices for the possibility of joint rotation are made in the form of rigid joints.

A rolling bearing is known, comprising rolling bodies and separating elements of the separator, in which channels are arranged with springs located in neither, compressing the solid lubricant against rubbing tracks to the outer and inner ends

The main disadvantage of this known rolling bearing is the fact that in it are made of hardened spring steel, spiral bars lifting

Joint venture joint venture

With

solid lubricant to the raceways of the outer and inner rings, p conditions; high temperatures will be tempered and, at the same time, rub their spring properties, which will impair the conditions for rubbing solid lubricant into the raceways of the outer and inner rings. As a result, the durability of this known rolling bearing is high / low: temperatures

The purpose of the invention is to increase the durability of the bearing under high conditions: temperatures, improving the rubbing of solid lubricant powder in the raceways of the outer and inner rings

To this end, each connecting device for the possibility of joint rotation is made in the form of axially mounted axially displaceable relative to the non-center separator separator, the force transmitted from the separator to the scraper installed with the formation of a radial clearance between it and the separator:

In FIG. 1 is a bearing, general view, longitudinal section; rtinr ,, 2 - cut AD in FIG. I,;

The proposed rolling bearing Contains rolling elements 1, separated by a separator 2 with its separating elements 3 which are connected by means of connecting devices A for the possibility of joint rotation with the scraper 5 and 6 intended for conveying solid lubricant powder located in the groove: 7 and ° 9 and inner 10 rings, which are attached to the rolling fluids 11 and 12,

Each connecting device for the possibility of joint joint rotation is made in the form of a force, which is installed with the possibility of axial movement relative to the separator of the concentrator, transmitted to the scraper from the separator. Each such concentrator of the force transmitted from the separator to the scraper is made in the form of an auxiliary ball 13, which in one part is located in the hemisphere recess of the scraper 5 or 6, and is located in the section 0 made by the first other part.

5

0

5

0

a solid separator element 3 with an elongated groove 15 made elongated in a direction parallel to the - axis; Bearing-: Separator 2 is made up of a gear sleeve 16 and the auxiliary ring 17t are locally connected) - in one piece with rivets 18. Radial clearances 19 and 20 are made inseparably by the separator 2 and the scrapers 5 and 6 to allow some rotation of the scrapers 5 and B relative to the adjacent v surface of the separator 2 around the auxiliary: - balls 13:

To enable the bearing to be ingrown, between the scrapers 5 and the outer ring 9, radial clearances 21 are made, and, apart from the scrapers 6 and the inner ring 10, there are radial clearances 22 :: The separator 2 is centered, mainly along the scrapers b, and the shchmm interact with the inner ring 10; for which the gaps 22 between the scrapers 6 and the inner ring 10 are made small, equal, for example, to several microns, moreover, the gaps 21 between the scrapers 5 and the outer ring 9 are made larger, larger than the gaps 22, This allows the separator to hang

5

0

5

0

B s

ABOUT

the formation of the antennae to: it is shown

5

- on a scrake of linden under F a l-I and a yng-2 ;,

Separating elements 3 of the cage are made with the possibility of free movement between them of the rolling elements 1 in radial directions, on pages B and C. The movement of the inner ring U in the direction of the load on the bearing D is limited by the rolling elements 1, which excludes the possibility of jamming of the scrapers 5 and h between 1 separator 2 and rings 9 and 10.

A certain amount of solid lubricant powder, for example, graphite, is introduced into the cavity of the proposed rolling bearing of the proposed rolling bearing, such as: and into its housing equipped with seals, in which the bearing is mounted. The rational amount of injected solid lubricant powder is determined taking into account the operating conditions of the bearing and accumulated knowledge about the effectiveness of the use of powder lubricant.

The mass 0 of the separator 2 acts on the scrapers 5 and b in such a way that its components 0 (and O, through the auxiliary balls 13, press the corresponding scrapers 5 and b to the rings 9 and 10, concentrating the forces transmitted from the separator to the scrapers 5 and 6 at the points contacting the auxiliary balls 13 with the scrapers 5 and 6, the Concentration of the forces transmitted from the separator to the scrapers 5 and b to a point located mainly along the axis of symmetry of the scrapers 5 and 6, provides approximately uniform distribution of forces from the separator in conjunction with By using tools 9 and 10, the surfaces of the scrapers 5 and 6 This creates better conditions for the scrapers 5 and 6 to rub solid lubricant powder into the rolling bearings 11 and 12 of rings 9 and 10,

Depending on the thickness of the solid lubricant powder layer introduced at a particular time interval between specific scrapers 5 and 6 and rings U and 10, the actual value 0 will vary from value to value 5 0; in this case, accordingly, the values of gk will vary from 0, 0 to. The mathematical expressions given correspond to the specific instantaneous arrangement of the rolling bodies 1 in the working bearing and the effective load P shown in FIG. 2

During the operation of the proposed rolling bearing, auxiliary chnp made in chmnp, balls 13 centercounters k are transmitted from the separator 2 forces 0 and O 2 to the scrapers 5 and b, providing joint rotation of the scrapers 5 and b with the separator 2, also provide the possibility of turning the scraper 5 or b relative to the adjacent surface of the separator 2 around the auxiliary ball 13 for all- ;, are caused; movement on the rolling element bearing I, it is possible to skew the axis of the separator 2 relative to the axis of the outer ring and relative to the axis of the inner ring. This possibility is also provided by the presence of radial clearances 19 and 20, for all relative relative axial movements of the rings B and S, auxiliary balls 13, moving camping along

55 & 3

oblong

6

grooves

15 provide

0

5

0

5

0

5

0

5

0

5

appropriate mutual axial movement of the scraper 5 relative to the scraper 6 and, thereby, exclude the possibility of jamming of the working bearing, including at small, even if a few microns, clearance; between the scrapers 5 and b and the rings 9 and 10

Shown in FIG. 2 forces 0 and Pn, which are, in time, instantaneous components from the mass О of the separator 2, raise the corresponding scrapers 5 and 6 to the rings 9 and 10, this ensures rubbing of the solid powder rings 9 and 10 into the raceways 11 and 12 lubricant carried away and sprayed into the cavity of the working bearing with scrapers 5 n b. This ensures that the raceways 11 and 12 get solid, without tearing films of solid lubricant, which increases the durability of the proposed rolling bearing in condition 1: high temperatures,

The possibility of rubbing the powder of solid lubricant material with scrapers 5 and b into the lower part, i.e., into the zone of the i-iron ring 9 loaded by the force P, under the condition that the gaps 21 are large and the gaps 22 is ensured by the inevitable accumulation of a layer in this lower part of the bearing powders of solid lubricant. material pz under the action of its forces and gravity. In this case, even with insufficient rubbing of the powder of solid lubricant, the formation of a layer of solid lubricant is ensured, which reduces wear of the lower part of the raceway And the outer ring 9

Scrapers 5 and b can be made in itiopne arcuate: plates pr, h, in case shown (ting. I and 2 forms and cross-sectional profile, for this, dgt conditions are high; temperature, scrapers 5 and 6 should be made either from the corresponding heat-resistant and heat-resistant cast iron with spring properties; by analogy with the cast-iron piston rings of BHj engines, combustion burns; or from heat-resistant and sharp-spring steel and hardened, In this case, the curvature of the arcuate scrapers 5 and 6 in the free state, t „E“ before and; installation in the bearing ir, by comp