CN2447570Y

CN2447570Y - Precision-adjustable roller bearing without retainer

Info

Publication number: CN2447570Y
Application number: CN 00218073
Authority: CN
Inventors: 张富生
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-06-16
Filing date: 2000-06-16
Publication date: 2001-09-12
Anticipated expiration: 2010-06-16

Abstract

The utility model discloses a bearing without a retainer and the utility model is used in the mechanical engineering. Rolling columns can be arranged between an inner ring and an outer ring of the bearing in equal-distance way; one rolling column can be arranged between each two adjacent rolling columns at one side near the outer ring; the length and the diameter of the rolling column are equal to the length and the diameter of the prearranged rolling column; when the utility model is used for the large scale equipment, the rolling columns can be made into the hollow rolling columns; both sides of the inner ring and the outer ring of the bearing are covered with a dust-proof cover; because the rolling columns can move in the bearing and the moving belongs to the rolling motion, the utility model can eliminate the non-rolling friction brought by the retainer; when the utility model is used for the large scale equipment, the rolling columns can carry out the fine adjustment for the high temperature thermal expansion produced by the high speed because of the hollow rolling columns; the utility model can ensure the accuracy and the normal running operation of the bearing.

Description

Do not have and hold frame adjustable accuracy roller bearing

A kind of nothing that is used for mechanical engineering is held frame adjustable accuracy roller bearing, belongs to mechanical engineering technical field.

The roller bearing that is used for mechanical engineering at present, usually all use a roller in the retainer spring bearing, the shortcoming of this general bearing is roller and retainer constantly friction at the volley, not only increased resistance, and roller and retainer all generate heat because of friction, not only increased resistance, and roller is damaged.

The purpose of this utility model provides the roller bearing that a kind of nothing is held frame, adjustable accuracy.

Scheme of the present utility model is to realize like this, equidistant placement roller between the inner ring of bearing and outer ring, on one side near the outer ring, place a length another roller identical with this roller between per two adjacent rollers again with diameter, the diameter of another roller is greater than distance between the cylindrical of this two adjacent roller, one side cylindrical of another roller rolls with the inwall of outer ring and contacts, the opposite side cylindrical rolls with the cylindrical of roller and contacts, the opposite side cylindrical of roller rolls with the cylindrical of inner ring and contacts, roller and another roller be by outer ring and the inner ring location that is clipped in the middle, and with the both sides of dust cover cap seal outer ring and inner ring; When being used for main equipment, aforementioned two kinds of rollers are made hollow.

The utility model has the advantages that roller moves between the inside and outside circle of bearing, is to roll fully, eliminated and retainer between non-rolling friction, thereby improved the rotational velocity of bearing greatly, prolonged the working life of bearing, reduced noise; When being used for main equipment, roller can be made hollow, the thermal expansion that in running up, produces, and hollow roller can be finely tuned automatically.

The utility model has following accompanying drawing, and accompanying drawing is made brief description.

Accompanying drawing 1 is a front view of the present utility model.

Accompanying drawing 2 is sectional views of accompanying drawing 1.

Accompanying drawing 3 is sectional views of the utility model bearing outer ring.

Accompanying drawing 4 is sectional views of dust cover.

Accompanying drawing 5 is the bearing inner race sectional views with a shelves limit.

Accompanying drawing 6 is the bearing inner race sectional views with two shelves limits.

Accompanying drawing 7 is the bearing inner race sectional views that are not provided with grade limit.

Below in conjunction with accompanying drawing structure characteristic of the present utility model is elaborated.

See also accompanying drawing 1, equidistant placement roller 2 between the inner ring 4 of bearing and outer ring 1, on one side near outer ring 1, place another identical roller 5 of a length and diameter and roller 2 between per two adjacent rollers 2 again, the diameter D of roller 5 greater than between the cylindrical of two adjacent rollers 2 apart from d, one side cylindrical of roller 5 rolls with the inwall of outer ring 1 and contacts, the opposite side cylindrical of roller 5 rolls with the cylindrical of roller 2 and contacts, the opposite side cylindrical of roller 2 rolls with the cylindrical of inner ring 4 and contacts, roller 2 and roller 5 be by outer ring 1 and inner ring 4 location that is clipped in the middle, and with the both sides of dust cover 3 cap seal outer rings 1 and inner ring 4; Roller 2 does not have retainer with roller 5, clamp inner ring 4 and outer ring 1 by bearing, when the inner ring 4 of bearing when the S direction is moved, roller 2 moves along the N direction, roller 5 between two rollers 2 moves along the R direction, like this, roller 2 and roller 5 in bearing all are rolling motions, have eliminated the non-rolling friction that brings because of retainer; When this bearing is used for main equipment, for example be used in aviation field, roller 2 and roller 5 can be made hollow, in running up, because of the elevated temperature heat of bringing at a high speed expands, this bearing is not only because of having eliminated non-rolling friction, thereby can reduce temperature, but also because of roller is hollow, during thermal expansion, hollow roller can have the function of fine setting, guarantees that bearing runs well under good precision state.

Accompanying drawing 2 is sectional views of accompanying drawing 1, and the inner ring 4 among the figure is to have

unidirectional shelves limit

10, and 3 among the figure is dust covers, roller 2 in its cap seal bearing and roller 5, and its effect is dustproof on the one hand, prevents that on the other hand roller 2 and roller 5 from coming off; Accompanying drawing 3 is sectional views of bearing outer ring 1, among the figure in the outer ring 1 inboard fluted 12, crimp 8 close-fittings of oblique groove 7 and dust cover 3; Accompanying drawing 4 is sectional views of dust cover 3, and the crimp 8 among the figure is the crooked crimp of the exterior rim of circular lid, so as with outer ring 1 in oblique recess 7 close-fittings; Accompanying drawing 5 is the inner rings 4 with a shelves limit 10; Accompanying drawing 6 is the inner rings 4 with two shelves limits 11, and accompanying drawing 7 is the inner rings 4 that do not have grade limit, and it is to be used for miniature bearing, and all there is recess 9 on the around side both sides of each inner ring 4 so that and dust cover 3 cap seals, keep the bearing both sides smooth.

Claims

1, a kind of nothing is held frame adjustable accuracy roller bearing, it is levied the spy and is: equidistant placement roller (2) between the inner ring (4) of bearing and outer ring (1), on one side near outer ring 1, place a length another roller (5) identical with roller (2) between per two adjacent rollers (2) again with diameter, the diameter D of roller (5) equals between the cylindrical of two adjacent rollers (2) apart from d, one side cylindrical of roller (5) rolls with the inwall of outer ring (1) and contacts, the opposite side cylindrical of roller (5) rolls with the cylindrical of roller (2) and contacts, the opposite side cylindrical of roller (2) rolls with the cylindrical of inner ring (4) and contacts, roller (2) and roller (5) be by outer ring (1) and inner ring (4) location that is clipped in the middle, and with the both sides of dust cover (3) cap seal outer ring (1) and inner ring (4).

2, connect the described nothing of claim 1 and hold frame adjustable accuracy roller bearing, it is levied the spy and is: inboard fluted (12) of outer ring (1), and inner ring (4) has a shelves limit (10), there is recess (9) at its edge, and the outer circular edge of circular dust cover (3) curves a crimp (8).

3, connect the described nothing of claim 1 and hold frame adjustable accuracy roller bearing, it is levied the spy and is: roller (2) and roller (5) are made hollow.