CN202545571U

CN202545571U - Rotary support bearing with double-row thrust conical roller structure

Info

Publication number: CN202545571U
Application number: CN2012201735001U
Authority: CN
Inventors: 郝文路
Original assignee: LUOYANG XINQIANGLIAN SLEWING BEARING CO Ltd
Current assignee: LUOYANG XINQIANGLIAN SLEWING BEARING CO Ltd
Priority date: 2012-04-23
Filing date: 2012-04-23
Publication date: 2012-11-21
Anticipated expiration: 2022-04-23

Abstract

The utility model discloses a rotary support bearing with a double-row thrust conical roller structure. The rotary support bearing comprises inner rings, outer rings, sealing rings and rolling bodies, wherein the rolling bodies are arranged in rolling channels by retainers; ring-shaped bosses are arranged at the middle parts of the inner-diameter surfaces of the outer rings; the upper end surfaces of the ring-shaped bosses are provided with concave grooves I, and the lower end surfaces of the ring-shaped bosses are provided with concave grooves II; the rolling channel formed among the concave grooves I and the first inner ring is internally provided with rolling bodies I; and a rolling channel formed among the concave grooves II and the second inner ring is internally provided with rolling bodies II. The rotary support bearing disclosed by the utility model has the beneficial effects that the rotary axes of two rows of rollers are intersected into points and on the axis of a rotary support, so that the pure rolling of the rollers in working is guaranteed, the rollers are prevented from sliding, the friction is reduced and the service life is prolonged; the conical rollers not only can bear axial loads, but also can bear radial loads, so that one row of rollers are omitted; for the shape and the size, compared with the rotary support with the three rows of rollers, the axial size is reduced, materials are saved and relatively large overturning moment can be born.

Description

A kind of biserial thrust cone roller structure pivoting support bearing

Technical field

The utility model relates to a kind of extra large size bearing, a kind of specifically biserial thrust cone roller structure pivoting support bearing.

Background technique

In field of bearings; This bearing of some industry requirements possesses also needs short axial dimension when bearing axial load, radial load and tilting moment; At present; The three-row roller turntable bearing is generally adopted in this field, yet owing to produce during two row's thrust rollers work of conventional three-row roller turntable bearing and slide, can't satisfy the demand.

The model utility content

The purpose of the utility model is to be the deficiency that solves the problems of the technologies described above, and a kind of biserial thrust cone roller structure pivoting support bearing is provided, and it is simple in structure, and its axial dimension dwindles greatly, and friction is little in the rotation process, improves working life greatly.

The utility model is the deficiency that solves the problems of the technologies described above; The technological scheme that is adopted is: a kind of biserial thrust cone roller structure pivoting support bearing; Comprise inner ring, outer ring, seal ring and rolling element, rolling element is arranged in the raceway through retainer, and inner ring is made up of first inner ring and second inner ring; Correspondence is provided with attachment hole on first inner ring and second inner ring; Aperture surface middle part, described outer ring is provided with annular boss, and the upper-end surface of annular boss is provided with the Baltimore groove I, and the lower end surface of annular boss is provided with the Baltimore groove II; Be provided with the rolling element I in the raceway that between the Baltimore groove I and first inner ring, forms; Be provided with the rolling element II in the raceway that between the Baltimore groove II and second inner ring, forms, the rotational axis of the rotational axis of rolling element I and rolling element II is given on the axis of inner ring mutually, and described rolling element I and rolling element II are tapered roller.

The beneficial effect of the utility model is: these bearing two row roller rotational axis meet at a little, and hand on the axis of pivoting support, make pure rolling when guaranteeing roller work, avoid roller slip, reduce friction, and improve the life-span; Tapered roller both can bear axial load, can bear radial load again, had economized a row footpath roller; Boundary dimension is compared with the three-row roller pivoting support, and axial dimension reduces, and saves material; Can bear bigger tilting moment.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the structural representation of outer ring in the utility model.

Mark among the figure: 1, inner ring, 101, first inner ring, 102, second inner ring, 2, the outer ring, 201, annular boss, 202, the Baltimore groove I, 203, the Baltimore groove II, 3, the rolling element I, 4, the rolling element II, 5, retainer, 6, seal ring.

Embodiment

As shown in the figure, a kind of biserial thrust cone roller structure pivoting support bearing comprises inner ring 1, outer ring 2, seal ring 6 and rolling element; Rolling element is arranged in the raceway through retainer 5; Inner ring 1 is made up of first inner ring 101 and second inner ring 102, and correspondence is provided with attachment hole on first inner ring 101 and second inner ring 102, in use links together through bolt assembly; 2 aperture surfaces middle part, described outer ring is provided with annular boss 201; The upper-end surface of annular boss 201 is provided with Baltimore groove I 202, and the lower end surface of annular boss 201 is provided with Baltimore groove II 203, is provided with rolling element I 3 in the raceway that between the Baltimore groove I 202 and first inner ring 101, forms; Be provided with rolling element II 4 in the raceway that between the Baltimore groove II 203 and second inner ring 102, forms; The rotational axis of the rotational axis of rolling element I 3 and rolling element II 4 intersects, and intersection point is on the axis of inner ring 1, and described rolling element I 3 is tapered roller with rolling element II 4.

Claims

1. biserial thrust cone roller structure pivoting support bearing; Comprise inner ring (1), outer ring (2), seal ring (6) and rolling element; Rolling element is arranged in the raceway through retainer (5); Inner ring (1) is made up of first inner ring (101) and second inner ring (102); First inner ring (101) and second inner ring (102) are gone up correspondence and are provided with attachment hole; It is characterized in that: aperture surface middle part in described outer ring (2) is provided with annular boss (201), and the upper-end surface of annular boss (201) is provided with Baltimore groove I (202), and the lower end surface of annular boss (201) is provided with Baltimore groove II (203); Be provided with rolling element I (3) in the raceway that between Baltimore groove I (202) and first inner ring (101), forms; Be provided with rolling element II (4) in the raceway that between Baltimore groove II (203) and second inner ring (102), forms, the rotational axis of rolling element I (3) is given on the axis of inner ring (1) with the rotational axis of rolling element II (4) mutually, and described rolling element I (3) and rolling element II (4) are tapered roller.