CN205876990U - Bearing of top load - Google Patents

Abstract

The utility model discloses a bearing of top load, bearing outer ring and bearing inner ring including coaxial setting, be provided with a plurality of ball between bearing outer ring and the bearing inner ring, bearing inner ring is provided with the ball groove, the ball sets up at the ball inslot, at least, two mutual contact positions that correspond have between ball and the ball groove, it keeps the holder of ball position to set up on the ball, the ball is interior hollow structure, the draw -in groove is seted up to bearing outer ring's interior disc, be provided with the shield on the bearing, the outer tip joint of shield is in the draw -in groove, the internal surface of shield is towards the ball, the utility model discloses a ball adopts the hollow structure design, light in weight, and the thermal capacitance is little, and the ball is placed at the ball inslot simultaneously, and the ball groove is by the both ends arc surface and be located two sections sunk areas between the arc surface and constitute, has the clearance between the sunk area in ball groove and the ball for the bearing can bear radial load and axial load simultaneously, has the life -span improved 2 than ordinary deep groove ball bearing when bearing axial load 3 doubly.

Description

A kind of bearing of top load

Technical field

This utility model belongs to mechanical engineering apparatus field, is specifically related to the bearing of a kind of top load.

Background technology

Bearing refers to play parts that are fixing and that reduce load coefficient of friction in mechanical transmission course.When other parts are at axle On when producing relative motion each other, coefficient of friction and holding shaft center that bearing can be used to reduce in power transmission process are solid Fixed.Therefore, a kind of very important parts during bearing is plant equipment in the present age.Its major function is to support machinery to rotate Body, in order to reduce equipment mechanical load coefficient of friction in transmission process.Outside being directly exposed in order to avoid the ball of bearing, A lot of designers are additionally arranged dust cap on bearing, it is to avoid ball is by the contaminating erosion such as dust, greasy dirt.

China's patent CN202348987U discloses a kind of shield bearing, this shield bearing mainly include outer ring, inner ring and Steel ball, arranges several steel balls between outer ring and inner ring, outer collar dustproof groove is all offered in the both sides of the inner headed face of outer ring, and outer ring is with interior Arranging dust cap between circle, the edge of dust cap arranges groove, and groove snaps in the outer collar dustproof groove of outer ring.Install dust cap additional Bearing can effectively avoid the dust of job site to enter Bearing inner at the construction field (site), thus avoid Bearing inner card Point phenomenon.

But, it can be seen that the periphery of the edge of dust cap and bearing inner race from above-mentioned patent specification accompanying drawing Between there is bigger gap, and the outer surface of dust cap is the most smooth, and dust falls the most mobile behind dust cap surface wafing To the gap between dust cap and bearing inner race, hence into Bearing inner, corrode ball, reduce the service life of bearing.

Meanwhile, current Application comparison bearing widely has deep groove ball bearing, and its ball grooves is usually semicircle, assembles at bearing Time, semicircle ball grooves combines closely with ball, but such setting makes bearing be only capable of bearing the axial of radial load and trace Load, when suffer from larger axis impact to power when, bearing is highly susceptible to destroy, and causes the precision of bearing and performance fall Low, meanwhile, the service life of bearing also can be greatly shortened.

Utility model content

The purpose of this utility model is the defect for prior art and deficiency, it is provided that a kind of simple in construction,

The bearing of top load reasonable in design, easy to use.

For achieving the above object, the technical solution adopted in the utility model is: the bearing of a kind of top load, including coaxially setting The outer race put and bearing inner ring, be provided with several balls, in described bearing between described outer race and bearing inner ring Ring is provided with ball grooves, and described ball is arranged in ball grooves, at least have between described ball and ball grooves two mutual right The contact position answered, described ball is provided with the retainer keeping ball position, and described ball is interior hollow-core construction, described axle Holding and offer draw-in groove on the inner headed face of outer shroud, described bearing is additionally provided with dust cap, the outer end of described dust cap is connected in In draw-in groove, the inner surface of described dust cap is towards ball, and it is recessed that the outer surface of described dust cap offers the hemispherical being uniformly arranged Groove, the internal diameter of described hemispherical groove is 0.4-0.8mm.

Further, described dust cap includes discoid dust cap body, and described dust cap body offers center Hole, described centre bore is coaxial with bearing inner ring, and the inner surface of described dust cap body offers opening, described dust cap body Edge be provided with and carry out the setting-in flange of clamping with draw-in groove.

Further, described hemispherical groove is arranged on the outer surface of dust cap body, the bottom land of described hemispherical groove Being evenly arranged with several hemispherical protuberances, the outer edge of described hemispherical groove is also symmetrically arranged with strip raised line.

Further, described ball grooves by the first arc surface, the second arc surface and is positioned at the first arc surface and the second circular arc , there is gap in the sunk area composition between face, described sunk area is arc structure between described sunk area and ball.

After using said structure, this utility model has the beneficial effect that

(1) ball of the present utility model uses hollow-core construction design, and lightweight, thermal capacitance is little, and ball is placed on ball simultaneously In groove, ball grooves is made up of two terminal circle cambered surface and the sunk area between two sections of arc surfaces, the sunk area of ball grooves And there is gap between ball so that bearing can bear radial load and axial load, when bearing axial load, longevity simultaneously Life improves 2-3 times than common deep groove ball bearing.

(2), after this utility model is designed with several hemispherical groove on the outer surface of dust cap, dust cap is added The surface roughness of outer surface, dust falls dust cap outer surface, it is not easy to produces movement again, thus accumulates in hemispherical groove In, will not move to the gap between dust cap and bearing inner ring, it is to avoid dust enters Bearing inner and makes the parts such as ball Become to corrode, improve the service life of bearing.

(3) this utility model is by being designed with hemispherical protuberances on the bottom land of hemispherical groove, it is possible to improve further The surface roughness of hemispherical groove, it is to avoid fall into the dust in hemispherical groove once again because the factors such as vibrations are run out, improves The anti-dust performance of dust cap, and then improve the service life of this bearing.

(4) after this utility model is by being designed with strip raised line, it is possible to the dust in hemispherical groove is risen a resistance Gear effect, avoids further departing from hemispherical groove in dust, improves the anti-dust performance of this bearing.

Accompanying drawing explanation

Fig. 1 is side view of the present utility model；

Fig. 2 is sunk area partial enlarged drawing of the present utility model；

Fig. 3 is the structural representation of dust cap of the present utility model.

Description of reference numerals:

1, outer race；11, ball；2, bearing inner ring；3, retainer；4, ball grooves；41, the first arc surface；42, depression Region；43, the second arc surface；5, draw-in groove；6, dust cap；61, dust cap body；62, opening；63, setting-in flange；64, hemisphere Connected in star；65, hemispherical protuberances；66, strip raised line.

Detailed description of the invention

Below in conjunction with the accompanying drawings this utility model is further described.

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing and concrete Embodiment, is further elaborated to this utility model.Should be appreciated that detailed description of the invention described herein is only used To explain this utility model, it is not used to limit this utility model.

Referring to Fig. 1, Fig. 2 and Fig. 3, the bearing of a kind of top load, including the outer race 1 being coaxially disposed and bearing inner ring 2, Being provided with several balls 11 between outer race 1 and bearing inner ring 2, bearing inner ring 2 is provided with ball grooves 4, and ball 11 is arranged In ball grooves 4, at least there are between ball 11 with ball grooves 4 two mutual corresponding contact positions, ball 11 is provided with Keeping the retainer 3 of ball 11 position, ball 11 is interior hollow-core construction, and the inner headed face of outer race 1 offers draw-in groove 5, axle Holding and be additionally provided with dust cap 6, the outer end of dust cap 6 is connected in draw-in groove 5, and the inner surface of dust cap 6 is towards ball 11, anti- The outer surface of dirt lid 6 offers the hemispherical groove 64 being uniformly arranged, and the internal diameter of hemispherical groove 64 is 0.4-0.8mm.

Dust cap 6 includes discoid dust cap body 61, and dust cap body 61 offers centre bore, centre bore and axle Holding internal ring 2 coaxial, the inner surface of dust cap body 61 offers opening 62, the edge of dust cap body 61 is provided with and card Groove 5 carries out the setting-in flange 63 of clamping.This utility model is designed with several hemispherical groove 64 on the outer surface of dust cap 6 After, adding the surface roughness of dust cap 6 outer surface, dust falls dust cap 6 outer surface, it is not easy to produce movement again, from And accumulate in hemispherical groove 64, will not move to the gap between dust cap 6 and bearing inner ring 2, it is to avoid dust enters Ball 11 parts such as grade are caused erosion by Bearing inner, improve the service life of bearing.This utility model is by hemispherical groove Hemispherical protuberances 65 it is designed with, it is possible to improve the surface roughness of hemispherical groove 64 further, it is to avoid fall on the bottom land of 64 Dust in hemispherical groove 64 is run out because of factors such as vibrations once again, improves the anti-dust performance of dust cap 6, and then improves this axle The service life held；After this utility model is by being designed with strip raised line 66, it is possible to the dust in hemispherical groove 4 is played one Individual barrier effect, avoids further departing from hemispherical groove 64 in dust, improves the anti-dust performance of this bearing.

Hemispherical groove 64 is arranged on the outer surface of dust cap body 61, if the bottom land of hemispherical groove 64 is evenly arranged with Dry hemispherical protuberances 65, the outer edge of hemispherical groove 64 is also symmetrically arranged with strip raised line 66.

Ball grooves 4 by first arc surface the 41, second arc surface 43 and be positioned at the first arc surface 41 and the second arc surface 43 it Between sunk area 42 form, there is gap between sunk area 42 and ball 11, sunk area 42 is arc structure.This practicality Novel ball 11 uses hollow-core construction to design, and lightweight, thermal capacitance is little, in ball 11 is placed on ball grooves 4 simultaneously, and ball grooves 4 It is made up of two terminal circle cambered surface and the sunk area between two sections of arc surfaces 42, the sunk area 42 of ball grooves 4 and ball Gap is there is so that bearing can bear radial load and axial load simultaneously between 11, when bearing axial load, life-span ratio Common deep groove ball bearing improves 2-3 times.

The above, is only in order to the technical solution of the utility model to be described and unrestricted, those of ordinary skill in the art couple Other amendment or equivalent that the technical solution of the utility model is made, without departing from technical solutions of the utility model Spirit and scope, all should contain in the middle of right of the present utility model.

Claims (4)

1. a bearing for top load, including the outer race (1) being coaxially disposed and bearing inner ring (2), described outer race (1) And between bearing inner ring (2), it is provided with several balls (11), it is characterised in that: described bearing inner ring (2) is provided with ball grooves (4), described ball (11) is arranged in ball grooves (4), at least has two mutually between described ball (11) and ball grooves (4) Corresponding contact position, described ball (11) is provided with the retainer (3) keeping ball (11) position, and described ball (11) is Interior hollow-core construction, the inner headed face of described outer race (1) offers draw-in groove (5), described bearing is additionally provided with dust cap (6), the outer end of described dust cap (6) is connected in draw-in groove (5), and the inner surface of described dust cap (6) is towards ball (11), institute The outer surface stating dust cap (6) offers the hemispherical groove (64) being uniformly arranged, and the internal diameter of described hemispherical groove (64) is 0.4-0.8mm。

The bearing of a kind of top load the most according to claim 1, it is characterised in that: described dust cap (6) includes discoid Dust cap body (61), described dust cap body (61) offers centre bore, described centre bore and bearing inner ring (2) with Axle, the inner surface of described dust cap body (61) offers opening (62), and the edge of described dust cap body (61) is arranged Have and carry out the setting-in flange (63) of clamping with draw-in groove (5).

The bearing of a kind of top load the most according to claim 2, it is characterised in that: described hemispherical groove (64) is arranged on The outer surface of dust cap body (61), the bottom land of described hemispherical groove (64) is evenly arranged with several hemispherical protuberances (65), the outer edge of described hemispherical groove (64) is also symmetrically arranged with strip raised line (66).

The bearing of a kind of top load the most according to claim 1, it is characterised in that: described ball grooves (4) is by the first circular arc Face (41), the second arc surface (43) and sunk area (42) group being positioned between the first arc surface (41) and the second arc surface (43) Becoming, there is gap between described sunk area (42) and ball (11), described sunk area (42) is arc structure.