CN203035748U

CN203035748U - Split single-row ball slewing bearing

Info

Publication number: CN203035748U
Application number: CN 201220543171
Authority: CN
Inventors: 侯宁; 梅帮明; 许丽华; 朱良银; 毕娟娟
Original assignee: MAANSHAN JINGYI ENGINEERING MACHINERY Co Ltd
Current assignee: MAANSHAN JINGYI ENGINEERING MACHINERY Co Ltd
Priority date: 2012-10-23
Filing date: 2012-10-23
Publication date: 2013-07-03
Anticipated expiration: 2022-10-23

Abstract

The utility model discloses a split single-row ball slewing bearing which comprises an outer ring, an inner ring, a steel ball, a retainer and a sealing ring and is characterized in that the outer ring, the inner ring and the retainer are divided into two symmetrical halves, and the steel ball is placed in the retainer. According to the split single-row ball slewing bearing, a single-row ball slewing bearing is divided into two semicircular slewing bearings, each half slewing bearing serves as a whole and comprises the half inner ring, the half outer ring, a half isolation block, the half steel ball and the half sealing ring. During assembly, the two identical semicircular slewing bearings directly constitute the slewing bearing. In this case, since the inner ring, the outer ring and the retainer are divided into the two halves capable of being dismounted freely, the slewing bearing can be replaced or maintained simply and quickly without dismounting a whole upper rack and without limitation of fields.

Description

A kind of single-row ball type slewing bearing of split type

Technical field

The utility model relates to pivoting support, relates in particular to a kind of single-row ball type slewing bearing.

Background technique

Pivoting support is the mechanical necessary important force transfer element that needs to do to turn round relatively, need to bear again axial force, radial force, tilting moment between all two-part as the important foundation element of engineering machinery and building machinery.Pivoting support is divided into by its structural type: single-row ball type, three organ timbering formulas, decussation roller formula, double eight point contact ball formulas, goalpost combined type etc.Therefore but these pivoting supports are integrated type at present, in maintenance or when changing pivoting support, need all dismantle whole upper spider, and workload is big, complex process, and be subjected to the restriction in place sometimes, the dismounting of pivoting support can't realize.

Summary of the invention

Problem to be solved in the utility model provides a kind of single-row ball type slewing bearing of split type, and it is with the pivoting support separated into two parts, does not need to remove whole upper spider like this, just can finish replacing or the maintenance of pivoting support part, and is simple and quick.

The single-row ball type slewing bearing of a kind of split type of the utility model, it comprises outer ring, inner ring, steel ball, retainer, seal ring, it is characterized in that: outer ring, inner ring, retainer all are the two halves of symmetry, and steel ball is placed in the retainer.

The single-row ball type slewing bearing of the utility model split type is the pivoting support that a single-row ball type slewing bearing is divided into two semicircles, per half pivoting support is regarded an integral body as, and this half pivoting support comprises half inner ring, half outer ring, half spacing block and the steel ball of half quantity, half seal ring.During assembling, directly form a pivoting support by two identical semicircle pivoting supports.Like this, because Internal and external cycle, retainer all are the two halves that can freely dismantle, so when pivoting support is changed or keeped in repair, do not need to remove whole upper spider and just can finish, simple and fast, and be not subjected to the restriction in place.

Description of drawings

Fig. 1 is the plan view of this novel rotation supporting;

Fig. 2 is the left view of this novel rotation supporting;

Fig. 3 is the parts drawing of retainer;

Fig. 4 is the sectional view along A-A line among Fig. 3;

Fig. 5 is the enlarged diagram at B place among Fig. 3;

Fig. 6 is the erection drawing of retainer and steel ball.

Embodiment

From Fig. 1, Fig. 2 as can be known, a kind of split type pivoting support of the utility model, it comprises outer ring 1, inner ring 5, steel ball 2, retainer 3, seal ring 4, and wherein, outer ring 1, inner ring 5, retainer 3 all are the two halves of symmetry, and steel ball 2 is placed in the retainer 3.

From Fig. 3, Fig. 4, Fig. 5 as can be known, in aggregates by fishplate bar 6 connections between two retainers 3, form a complete retainer.Wherein, two of fishplate bar 6 is fixed on the interface of retainer 3 by screw 7.Retainer will guarantee it is a complete retainer in the running, and therefore retainer 3 is two halves before installation, and during assembling, two and half retainers, 3 usefulness screws 7 and fishplate bar 6 couple together, and form a complete retainer.

The isolation of steel ball and steel ball generally is spacing block and annular retainer in the pivoting support, and these are not suitable for using in the split type pivoting support, because the split type pivoting support will be guaranteed the convenience of assembling.So as this novel a kind of improved procedure, retainer 3 is pocket hole retainer.

Split type pivoting support during this is novel refers to the directly pivoting support of a single ball function of composition of two identical semicircle pivoting supports, and this pivoting support comprises two of semicircle outer rings, two of semicircle inner rings, steel ball, retainer, seal ring.Wherein two semicircle outer rings are the outer ring to be cut from the centre be divided into two the same semicircular ring, two semicircle inner rings are inner ring to be cut from the centre be divided into two the same semicircular ring, four semicircular ring have so just been formed, two rings in outer ring to just formed the interior raceway of a pivoting support together, two rings of inner ring to just formed the outer raceway of a pivoting support together.During assembling, the steel ball in the raceway separates uniformly with retainer.Retainer also is that a complete retainer is cut open from the centre, is divided into two the same semicircular ring retainers, and retainer is provided with the pocket hole, and steel ball is put into the pocket hole, so just can regard steel ball and retainer as an integral body assembling (as shown in Figure 6).

When assembling with main frame, whole pivoting support separated into two parts, per half pivoting support is regarded an integral body as, and this half pivoting support comprises half inner ring, half outer ring, half spacing block and the steel ball of half quantity, half seal ring.

Adding man-hour, the outer ring is divided equally two semicircular ring (two half rings of guaranteeing to cut is the same) with inner ring with the line cutting, after the incision, amount of deformation will be controlled in 0.5mm, carrying out full circle then handles, guaranteeing that two half-turns lump together can become a whole circle, makes the circularity control of Internal and external cycle in 0.1mm, and guarantees the jointing rounding off.Retainer is that a complete pocket hole retainer is divided into two duplicate semicircle retainers, retainer is divided into two up and down, steel ball is packed into behind the pocket hole, connect with screw then, guarantee that namely steel ball goes slick, can not come off again, and can guarantee that steel ball and retainer do as a whole the assembling.When assembling with main frame, whole pivoting support separated into two parts, per half pivoting support is regarded an integral body as, and this half pivoting support comprises half inner ring, half outer ring, half spacing block and the steel ball of half quantity, half seal ring.

Claims

1. the single-row ball type slewing bearing of a split type, it comprises outer ring (1), inner ring (5), steel ball (2), retainer (3), seal ring (4), it is characterized in that: outer ring (1), inner ring (5), retainer (3) all are the two halves of symmetry, and steel ball (2) is placed in the retainer (3); Retainer (3) is pocket hole retainer, and it is divided into two-part up and down.

2. single-row ball type slewing bearing according to claim 1 is characterized in that: connect in aggregatesly between two retainers (3) by fishplate bar (6), form a complete retainer.

3. single-row ball type slewing bearing according to claim 2, it is characterized in that: two of fishplate bar (6) is fixed on the interface of retainer (3) by screw (7).