CN205677977U - Self-aligning roller bearing, papermaking equipment, elevator and industrial machine - Google Patents

Abstract

The utility model provides a kind of self-aligning roller bearing to have the papermaking equipment of self-aligning roller bearing, elevator and industrial machine.Self-aligning roller bearing has: inner ring；Outer ring；Axially aligned between above-mentioned inner ring and above-mentioned outer ring is multiple rolling elements of two row；With the retainer with pocket hole, this pocket hole is for circumferentially keeping above-mentioned rolling element at predetermined intervals, and wherein, the pocket hole of above-mentioned retainer is to be divided into by annulus and the post portion axially extending from this annulus.Above-mentioned self-aligning roller bearing can be applicable to papermaking equipment, elevator and industrial machine.

Description

Self-aligning roller bearing, papermaking equipment, elevator and industrial machine

Technical field

The utility model relates to for example for the self-aligning roller bearing in the rotation supporting portion of general industrial machine etc., Particularly for the self-aligning roller bearing in the rotation supporting portion of the papermaking equipment or elevator that require that high speed.

Background technology

As conventional this self-aligning roller bearing, for example, know the bearing (with reference to patent document 1) shown in Fig. 6. This self-aligning roller bearing 101 is at the inner ring 102 with multiple row raceway 102a, 102a and the concave spherical surface with multiple row one Between the outer ring 103 of raceway 103a, the 104th, 104 can circumferentially rollably be equipped as rolling element via a pair retainer Two row spherical rollers the 105th, 105.It is provided with flange part 106 between multiple row raceway 102a, 102a of inner ring 102.Retainer is the 104th, 104 is directed along the outer peripheral face of this flange part 106, this retainer the 104th, 104 base portion 104a, 104a be provided with vertically Oilhole 104x, 104x that (left and right directions in figure) runs through.

Generally, spherical roller 105 can generate heat because there is sliding friction in the case of glancing off (skew), thus carries on a shoulder pole The heart, because producing impact to lubricant (lubricating oil, lubricating grease), in order to prevent the deflection of above-mentioned spherical roller, preferably makes spherical roller And the gap between the end face of the gap between retainer and spherical roller and flange part or guiding circle is little.But, more contracting This gap little is more difficult to the inflow of lubricant, is thus difficult to persistently maintain well the lubricating status of contact surface.

Illustrate according to patent document 1: in the composition of Fig. 6, be provided with oilhole 104x, 104x, thus via oilhole 104x, 104x makes lubricating oil circulate vertically, make collecting spherical roller the 105th, 105 pocket hole portion inside and outside between connection, carry out swimmingly The circulation of lubricating oil, stirring.Thus, the delay in the axial direction of the lubricating oil in suppression pocket hole portion, prevents foreign matter accumulation at its pocket In the portion of hole.

Patent document

Patent document 1: Japanese Unexamined Patent Publication 2008-69868 publication

In the conventional self-aligning roller bearing 101 shown in Fig. 6, it is suppressed that in the axial direction of the lubricating oil in the portion of pocket hole Delay, but do not account for the mobility of the lubricating oil radially of bearing.In order to improve productivity, the High Rotation Speed of bearing Change constantly in development.In order in above-mentioned High Rotation Speed, also relax based on metal parts directly contact each other produced The generation of the surface damage of abnormal heating and contact surface abrasion etc., and the bearing that needs take measures in bearing is radially also Improve the mobility of lubricating oil.

Utility model content

The utility model in view of the above problems, for the purpose of a kind of self-aligning roller bearing to be provided, this automatic aligning Roller bearing can improve the mobility of the lubricating oil radially of bearing, even if thus also can press down when bearing High Rotation Speed System heating, abrasion and vibration.

Above-mentioned purpose of the present utility model is realized by following constituting.

(1) a kind of self-aligning roller bearing, it has: inner ring；Outer ring；Along axle between above-mentioned inner ring and above-mentioned outer ring To the multiple rolling elements being arranged as two row；With the retainer with pocket hole, this pocket hole is for circumferentially keeping at predetermined intervals Stating rolling element, wherein, the pocket hole of above-mentioned retainer is to be divided into by annulus and the post portion axially extending from this annulus , above-mentioned post portion is formed with the radial hole extending radially through.

(2) in the self-aligning roller bearing of above-mentioned (1), above-mentioned post portion is formed with the circumference circumferentially running through Hole.

(3) above-mentioned (1) or (2) self-aligning roller bearing can be applicable to papermaking equipment.

(4) above-mentioned (1) or (2) self-aligning roller bearing can be applicable to elevator.

(5) above-mentioned (1) or (2) self-aligning roller bearing can be applicable to industrial machine.

The effect of utility model

According to the utility model, the post portion of retainer is formed with the radial hole radially extending, therefore, it is possible to improve The mobility of bearing lubricating oil radially.Thus, even if heating also can be suppressed during bearing High Rotation Speed, wears away and shakes Dynamic.In addition, can make retainer lightweight by forming radial hole, starting when starting that rotates that can reduce bearing turns Braking moment when square, rotation stopping.

Brief description

Fig. 1 is the sectional view of the self-aligning roller bearing that the 1st embodiment of the present utility model is described.

Fig. 2 is to take out the stereogram that the retainer of Fig. 1 represents.

Fig. 3 is the partial enlarged drawing of Fig. 2.

Fig. 4 is the stereogram of the retainer representing the 2nd embodiment of the present utility model.

Fig. 5 is the partial enlarged drawing of Fig. 4.

Fig. 6 is the sectional view of the case that conventional self-aligning roller bearing is described.

Description of reference numerals

1 self-aligning roller bearing

2 inner rings

3 outer rings

4th, 4 ' retainer

4a annulus

4b post portion

4c pocket hole

4d radial hole

4e circumference hole

5 spherical rollers

6 guide circle

Detailed description of the invention

Hereinafter, the embodiment of self-aligning roller bearing of the present utility model is described based on accompanying drawing.

(the 1st embodiment)

Fig. 1～3 represent the 1st embodiment.As it is shown in figure 1, self-aligning roller bearing 1 is (hereinafter referred merely to as " bearing ".) Have: inner ring 2；Outer ring 3；And between inner ring 2 and outer ring 3, be arranged as two row and retainer 4 is rotatably kept many Individual spherical roller 5.

Inner ring 2 so that the mode that axial (left and right directions in Fig. 1) center side is convex is formed with multiple row roller surface 2a, 2a, Axial central portion between two roller surface 2a, 2a, is formed with the end face 2b of general planar.Axial both ends are provided with a pair convex Edge 2c, 2c, prevent spherical roller 5 from coming off outside bearing.

Outer ring 3 is formed with the roller surface 3a of concave spherical surface shape on inner peripheral surface.In addition, the axial central portion at outer peripheral face runs through Be formed with lubricant hand-hole 3b, supply lubricant from this hand-hole 3b to bearing 1.

As rolling element spherical roller 5 (hereinafter referred merely to as " roller ".) be arranged respectively at the roller surface 3a of outer ring 3 with interior Between each roller surface 2a of circle 2, rotatably kept by retainer 4.

Retainer 4 is set to the brass cutting retainer of raceway circle guidance mode, and from Fig. 2, knowable to 3, it has configuration at axle To substantially central portion on annulus 4a and from the axial both ends of this annulus 4a respectively to the post portion of axially external extension 4b.The pocket hole 4c marking off "U" shape by each post portion 4b adjacent one another are in the circumferential and annulus 4a, in this pocket hole 4c rotatably maintains spherical roller 5.Separately house the roller 5 of each row in each pocket hole 4c, thus at ring The both sides of shape portion 4a form each rows of rollers respectively, and by each roller 5 of each rows of rollers along its circumferentially spaced predetermined distance ground Rotatably keep.

In addition, be formed with the radial hole 4d extending radially through on post portion 4b.But, although this radial hole is preferably located at respectively In post portion, but also may not necessarily be located in whole post portions.On the contrary, it is also possible in a post portion, be formed with multiple radial direction Hole.

Additionally, as from Fig. 2, knowable to 3, each pocket hole 4c of retainer 4 with between each rows of rollers along its circumference every half The mode of pitch is formed, and the spherical roller 5 of each row replaces (bended) configuration across annulus 4a.

Guide circle 6 being presented axially in two row spherical rollers the 5th, between 5, be radially positioned the end face 2b of inner ring 2 with Mode between the annulus 4a of retainer 4 is arranged.This guiding circle 6 has: a pair side relative with two row spherical rollers 5 6a、6a；The outer peripheral face 6b relative with retainer 4；And the inner peripheral surface 6c relative with inner ring 2, along the end face 2b guiding of inner ring 2 And can rotate.In addition, retainer 4 is directed on outer peripheral face 6b.

Then explanation action.

The self-aligning roller bearing 1 of present embodiment is not so that the axle that inner ring 2 is arranged on such as supporting paper grade (stock) roller (is schemed Show) on, the mode making outer ring 3 be arranged on housing (not shown) uses.When inner ring 2 rotates together with axle, spherical roller 5 exists Roll between inner ring raceway face 2a and outer ring raceway face 3a.

Now, the lubricating oil of supply in from the lubricant hand-hole 3b of outer ring 3 to bearing 1 supplies to retainer 4 and sphere Between roller 5, between spherical roller 5 and inner ring raceway face 2a and outer ring raceway face 3a, guide between circle 6 and inner ring end face 2b And guide between circle 6 and the annulus 4a of retainer 4, make these contact surfaces become the good state of lubricity.In addition, at axle Hold in action, because causing the lubricating oil being on the 2a of inner ring raceway face to flow into based on the rotating produced centrifugal force of inner ring 2 The accumulation to the radial hole 4d of retainer 4, or cause the lubricating oil of accumulation to flow out from radial hole 4d.Thus, maintain well Lubricating status between spherical roller 5 and outer ring 3, the temperature that causes because of heating can be suppressed from result to rise, abrasion with And vibration.

Additionally, the mobile lubricating oil to outer ring 3 side falls and arrives again at because conducting oneself with dignity to inner ring raceway face 2a.And, will Lubrication, the one of this lubricating oil simultaneously between inner ring raceway face 2a and spherical roller 5, between spherical roller 5 and retainer pocket hole 4c Part as described above, flows into radial hole 4d the accumulation of retainer 4, or makes the lubricating oil of accumulation from radial hole 4d outflow, It is possible to make lubrication oil circulation while maintaining the lubricating status between spherical roller 5 and outer ring 3 well.

In addition, retainer 4 lightweight can be made by forming radial hole 4d, and when the rotation that can reduce bearing starts Starting torque, rotate stop when braking moment.

(the 2nd embodiment)

Then, with reference to Fig. 4,5 the 2nd embodiment is described.

Bearing be monolithically fabricated compared to Figure 1, be identical in addition to the composition of retainer 4 '.Fig. 4 is as Fig. 2 The stereogram of retainer 4 ', Fig. 5 is the enlarged drawing of the retainer 4 ' as Fig. 3.Retainer 4 ' is in a same manner as in the first embodiment Ground has annulus 4a and the post portion 4b from this annulus 4a to axially external extension, is drawn by these annulus 4a and post portion 4b Separate pocket hole 4c.But, it on post portion 4b, in addition to the radial hole 4d of the 1st embodiment, is also formed with circumferentially Circumference hole 4e.Additionally, this circumference hole also can be not formed in whole post portions.In addition, as by illustrated by the 1st embodiment Ground, in the case of being formed without the post portion of radial hole, it is also possible to only form circumferential hole circumferentially.

When bearing action, lubricating oil flows into radial hole 4d and circumference hole 4e the accumulation of retainer 4 ', or accumulation Lubricating oil from radial hole 4d and circumference hole 4e flow out, the mobility improving lubricating oil maintains spherical roller well Lubricating status between 5 and retainer pocket hole 4c.

Additionally, the utility model is not limited to above-mentioned embodiment, can be appropriately deformed, improvement etc..For example, shape Radial hole in post portion also radially can not extend with radial as the crow flies, but radially extends sideling.In addition, conduct Lubricant also can substitute for lubricating oil and uses lubricating grease.

In addition, the purposes being suitable for self-aligning roller bearing of the present utility model is the rotation for general industrial machine etc. Turn the self-aligning roller bearing in support, be particularly suited for require that the papermaking equipment of high speed, but in addition to that, also The self-aligning roller bearing being used in the rotation supporting portion of elevator can be applicable to.

Claims (5)

1. a self-aligning roller bearing, it has: inner ring；Outer ring；Arrange vertically between described inner ring and described outer ring It is classified as multiple rolling elements of two row；With the retainer with pocket hole, this pocket hole is for circumferentially keeping described rolling at predetermined intervals Kinetoplast, this self-aligning roller bearing is characterised by,

The pocket hole of described retainer is to be divided into by annulus and the post portion axially extending from this annulus,

Described post portion is formed with the radial hole extending radially through.

2. self-aligning roller bearing according to claim 1, it is characterised in that be formed circumferentially in described post portion The circumferential hole run through.

3. a papermaking equipment, it is characterised in that there is the self-aligning roller bearing described in claim 1 or 2.

4. an elevator, it is characterised in that there is the self-aligning roller bearing described in claim 1 or 2.

5. an industrial machine, it is characterised in that there is the self-aligning roller bearing described in claim 1 or 2.