SU586940A1 - Antifriction bearing, particularly, for a rolling mill - Google Patents

Description

The invention relates to bearing supports, in particular bearing supports of multi-shaft rolling mills and stonework pipe rolling.

Known bearings of rolling mills, including an outer ring installed with the possibility of rotation relative to the axis of the bearing, a non-rotating inner colpo, raceways of rings with installed JQ rollers fixed in them. The raceway of the inner ring is made with a constant radius, and the thickened outer ring is installed with the possibility of interaction with a cylindrical or flat surface jg

Ij. However, when loading the bearing:. load distribution between rollers i-. for the bending of the outer ring is of a concentrated nature, which leads to an overload of the roller lying on the line acting load 20 ky on the bearing, reducing its durability .; ;

in the proposed bearing, the catenary track of the inner ring on the arc of the load is limited to an angle of 60–18 ° from ver

tire on the axis of rotation of the outer ring, is made with a radius equal to

O-ft)

TO

Tijj (l-cos6)

where.-a is the radius of the raceway in the unloaded; zone;

d - mounting clearance in the bearing in the absence of load; . : -radius roller ;;

 - radius of the circle of centers of pol. .: - ;,. - ,,,,,; -; , ; ,,

(Y is half the angle limiting the arc of loading.

FIG. 1 shows a bearing, longitudinal section; in fig. 2 - section A - A of FIG. i.

The bearing includes a thickened outer ring 1,} fixed with the possibility of rotation relative to the longitudinal axis of the bearing, not rotating when the bearing is in operation, the inner ring 2. j tracks 3 and 4 rings rolling, rollers 5. Track 4 is right for one arc of 6 loadings bounded by an angle of 2 ff equal to 60-180 / completed with a radius T. a large radius of 1 g of the rest of the raceway 4. When this rollers 5 can be installed in the separator (conventionally not shown in the drawing), the inner ring 2 is mounted on a non-moving axis 7 and fixed from the surface pin 8, and the rollers 5 and outer ring; the central heating station 1 is fixed in the axial axle with the hub 9 and the large axes 1O to 11 Rollers 5 of radius fp and radius of the circle of their centers RO: mounted between the rings 1 and 2. In the absence of load on The bearing 4 of the ring 2 contacts mainly with two rollers 5f and a clearance is set between the twin rollers 5 and the other 6 loading, the largest value of which is the load Pg, acting on the bearing, where; pg ,; , Tr, 3 HarpyiSKa, acting on the rollers 5 on the loading arc. The radius of the rolling tracks on the loading arc d6 is determined by the dependencies (-P L. (Y) op, JS.-... 2, where the number of rollers perceiving; ngruek y, j | e :;. 2 the number of rollers in the under load, and the most loaded ri. lnh is equal to gfv .f 1 is a biaraameric hoeffidient; .. "QTHOffliifBi hardness j | roller in the outer cell 1 | Tty.) G - FASHION: L is more normal than the width of the | equal to 2.0 10 JBti / MMt} E-roll on video; - the width of the outer ring. The bearing works as follows. When a bearing is loaded with a load P, due to deflection / outer ring 1, the load is loaded by at least seven rollers 5. At the same time, the greatest load on the roller, which largely determines the durability of the bearing, is redistributed among all the rollers of the loading zone. When one of the arcs 6 is loaded, the track of the inner ring is loaded — the axis 7 can be rotated through a certain angle. Under the load, a different arc will be installed 6 loading the track 4 rolling rollers 5, FORM u p a Li 3 o b e R e Rolling bearing mainly of a rolling mill, including external and non-rotary. inner rings with raceways and ooli installed between them | With the aim of increasing durability and bearing capacity, rolling the inner ring on the loading arc, the limiting angle of 6 ~ 180 with the tip on the axis of rotation of the outer ring is made with p & by a dnus equal to 0–10 T, (1-co-avg) where r is the radius of the rolling track in the unloaded zone; d 0 - mounting clearance in the bearing with no load; fp is the roller radius; KQ is the radius of the circle of the centers of the roles; U POPRVININA Uglv pgravichivayuscheyoutuu loaded load Itochiki information taken into consideration PR L (C |