CN205689595U - Roller bearing, continuous casting equipment, paper machine, engineering machinery and industrial machine - Google Patents

Abstract

This utility model provides a kind of roller bearing, there is inner ring, outer ring and be formed with multiple rollers of a pair end face at axis direction two ends, wherein, above-mentioned roller bearing has: the fixing annular groove being located in some of above-mentioned inner ring and outer ring and retainer ring, and this retainer ring has: the radial direction holding section engaged with above-mentioned fixing annular groove；From this blocking portion that radially holding section is relative with above-mentioned roller end face outside the axis direction of above-mentioned roller bearing；With the linking part that above-mentioned radial direction holding section and this blocking portion are linked.

Description

Roller bearing, continuous casting equipment, paper machine, engineering machinery and industrial machine

Technical field

This utility model relates to roller bearing, particularly relates in general industrial machine, steel machinery, papermaking equipment and work The roller bearing used in journey machinery etc..

Background technology

For the roller bearing used in general industrial machine or steel machinery, engineering machinery etc., the lotus acted on In the case of carrying greatly, even if causing the external diameter of bearing, internal diameter, width identical for the restriction because of bearing peripheral construction, also can Enough increase the load capacity of bearing, and employ and there is no retainer and increase the roller bearing of full dress roller-type of roller quantity (full complement roller bearing).Barrel roller bearing as one of this roller bearing is interior by being located at Annular flange portion on the end of circle or outer ring carrys out along the circumferential direction aimming circle tubular roller, but in order to carry out the group of bearing Dress, decomposition, and the end of at least one part in the both ends of Internal and external cycle is set to do not have flange.

But, (hereinafter referred merely to as " the rolling of cylinder roller can be caused under non-lipped state because departing from raceway circle Son ".) come off, on the side face being set to non-lipped end, therefore it is provided with mounting groove continuously in a circumferential, installs in the cell C-shaped retainer ring (for example, referring to patent documentation 1).And, by above-mentioned retainer ring, stop cylinder roller in raceway coil axis side Move up, prevent coming off of cylinder roller.

Fig. 4 is the partial sectional view of an example of the roller bearing representing this band retainer ring completely filling roller-type.This band is solid The roller bearing 120 determining ring can edge between the outer ring 121 with two flanges 121a, 121a and non-lipped inner ring 122 It is equipped with multiple cylinder roller 123 with circumferentially rotating.Axis direction (width) both ends at non-lipped inner ring 122 Near be provided with groove 122b continuously in a circumferential, in this groove 122b, C-shaped retainer ring 124 is installed.

This C-shaped retainer ring 124 be the part in circumference be truncated and can be expanding circle shape part, by this C-shaped Retainer ring 124 push make under the state that expands its along inner ring 122 periphery towards axis direction medial movement, embedding by bounce-back Enter to groove 122b.

Patent documentation

Patent documentation 1: Japanese Unexamined Patent Publication 9-177770 publication

Utility model content

But, in the case of the roller bearing 120 of above-mentioned conventional band retainer ring, house the groove of retainer ring 124 122b has to be formed at the width both ends from inner ring 122 and only enters the position of distance d slightly towards inner side.The opposing party Face, size Lr on the axis direction (long side direction) of roller 123 because of burden load size between relation and need be More than specific length.And, the axle supported at roller bearing is such as used in two of the guide reel in continuous casting equipment In the case of the axle of end, guide reel can because of guide reel based on slab contact or variations in temperature that noncontact is caused or The impact of the variations in temperature of the sheet material (slab) contacted self and stretch along long side direction.

Thus, it is desirable to arrange the space that can be only absorbed by this stroke between roller end face 123c and retainer ring 124 s.Assume in the case of not guaranteeing space s, then worry that retainer ring 124 can be pushed away in the axial direction because of the flexible of guide reel Pressure, departs from from groove 122b.In result, size B on the axis direction of bearing needs for following size.

(numerical expression 1)

B≥Lr+2(s+w+d)···(1)

The axis direction size of Lr: roller

S: the space between roller end face and retainer ring

The width of w: groove

D: the distance between inner ring end face and groove

Wherein, distance d between inner ring end face and groove 122b be in order to formed necessary to groove 122b so-called extremely Space (dead space), if can by its size reduction some, it becomes possible to absorbed the long side direction of guide reel by space s On flexible, and size B on the axis direction of bearing can be reduced.Its result is, it is possible to avoid continuous casting equipment overall Maximization.

This utility model is made based on above-mentioned investigation, for the purpose of a kind of roller bearing to be provided, and this roller bearing By making the position abutted with roller end face of retainer ring be positioned near the end of raceway circle, and can absorb what bearing was supported Change in size (stretching) on the axis direction of axle, and the size on the axis direction of bearing can be reduced.

In order to solve above-mentioned problem, roller bearing of the present utility model is constituted as follows.

A kind of roller bearing, has inner ring, outer ring and is located between above-mentioned inner ring and above-mentioned outer ring and at axis direction two End is formed with multiple rollers of a pair end face, and wherein, above-mentioned roller bearing has some being located at above-mentioned inner ring and outer ring On fixing annular groove and retainer ring, this retainer ring has: the radial direction holding section engaged diametrically with above-mentioned fixing annular groove；From This blocking portion that radially holding section is relative with above-mentioned roller end face outside the axis direction of above-mentioned roller bearing；With by above-mentioned footpath The linking part linked to holding section and this blocking portion.

It addition, above-mentioned roller bearing can be applicable to continuous casting equipment.

It addition, above-mentioned roller bearing can be applicable to paper machine.

It addition, above-mentioned roller bearing can be applicable to engineering machinery.

It addition, above-mentioned roller bearing can be applicable to industrial machine.

According to this utility model, the cross sectional shape of retainer ring is set to substantially bent axle shape, the blocking portion relative with roller end face On bearing axis direction, outside it is positioned at, even if thus because having with engaging relative to the radial direction holding section engaged with fixing annular groove The axis direction change in size (stretching) of the axle of the inner ring of retainer ring or outer ring one, is also not result in the blocking portion of retainer ring Abut with roller end face, and the size on the axis direction of bearing can be reduced.

Accompanying drawing explanation

Fig. 1 is the schematic configuration diagram of the continuous casting equipment being suitable for roller bearing of the present utility model.

Fig. 2 is the guide reel of the continuous casting equipment of Fig. 1 and supports the sectional view of bearing arrangement of this guide reel.

Fig. 3 is the explanatory diagram of roller bearing of the present utility model.

Fig. 4 is the explanatory diagram of conventional roller bearing.

Description of reference numerals

10 bearing arrangements

20 barrel roller bearings

21 outer rings

21a flange part

22 inner rings

22b fixes annular groove

23 rollers

23c roller end face

24 retainer ring

24c blocking portion

24d linking part

24e radially holding section

Detailed description of the invention

Hereinafter, of the present utility model embodiment is described in detail with reference to the attached drawings.Fig. 1 represent be suitable for of the present utility model The continuous casting equipment of roller bearing.In this continuous casting equipment, by the molten steel in melting furnace (ladle) 1 with casting pan (tundish) 2, the order of mould (casting mold) 3 carries, and is delivered to guide by slab FE starting solidification in this mould 3 Between roller 4.Carry out the cooling of slab FE in the underface of mould 3, promote solidification.

Fig. 2 is to represent guide reel 4 and support the sectional view of composition of bearing arrangement of this guide reel 4.This embodiment party In formula, although bearing arrangement 10,10 uses identical device, but invert and use, the most only explanation one.In fig. 2, guide Roller 4, in the axis direction both sides of the rolling portion 4a of rolling slab FE (with reference to Fig. 1), is sequentially provided with and rolling portion from 4a side, rolling portion 4a is in a ratio of the 1st cylindrical portion 4b, the 2nd cylindrical portion 4c and the 3rd cylindrical portion 4d of path and arranged coaxial.

In the inside of the housing main body 11 being fixed on by lower surface on pedestal 5, it is coaxially formed with cylindrical portion 11a and sealing Part maintaining part 11b.Barrel roller bearing 20 it is configured with in cylindrical portion 11a.Sealing member maintaining part 11b is configured with sealing member 13, its lip is connected to the periphery of the lost formula ring 14 chimeric with the 1st cylindrical portion 4b and seals.The circumference of lost formula ring 14 Cross section is substantially "U" shape, combines with having minim gap with the housing main body 11 of correspondingly-shaped, thus form as non- The lost formula sealing member of contact seals.But, sealing member structure is not limited to this.

On the periphery of the 3rd cylindrical portion 4d of housing main body 11, by chimeric in the way of the end face of the 2nd cylindrical portion 4c abutting It is configured with endless member 15, and fixes by bolt B.The inner ring 22 of barrel roller bearing 20 is by the end face of the 1st cylindrical portion 4b and ring Shape parts 15 clamp, and fix in the way of rotating integrally relative to guide reel 4.Additionally, there is also the installation accuracy because of shell Relation and use the end face to endless member 15 with inner ring 22 somewhat to pay the structure in gap.

Housing main body 11 uses bolt B the cover 16 of annular plate-like is installed, outer ring 21 is fixed on shell In main body 11.It is arranged in the sealing member 17 at the central opening of cover 16 to abut with endless member 15 and seal.By outward Shell main body 11 and cover 16 constitute shell.Additionally, although not shown, although but supply as a rule and use grease Lubricate, but be preferably, contain the appropriate profit of lubricating oil from oil-air lubricating device via pipe arrangement to pressurized delivered in shell Lubrication prescription, lubricates cylinder roller 23.

Fig. 3 is the figure of enlarged representation barrel roller bearing of the present utility model 20.In figure 3, barrel roller bearing 20 by Inner ring 22 that the outer ring 21 chimeric with the inner circumferential of housing main body 11 is chimeric with the 2nd cylindrical portion 4c of guide reel 4 and outside being arranged in Multiple cylinder rollers 23 between circle 21 and inner ring 22 are constituted.

Outer ring 21 is integrally formed oriented radial direction at axis direction two ends in the way of being clipped in the middle by cylinder roller 23 Flange part 21a, 21a that inner side extends.

The outer peripheral face of the axis direction central part of inner ring 22 is set as the roller surface 22a for cylinder roller 23, in this rolling Outside the axis direction two of face, road 22a, it is formed for fixing annular groove 22b for a pair with retainer ring 24 described later engages.Fixing Annular groove 22b has: radial direction radially extending groove 22c along inner ring 22 and axially extending along the axis direction of inner ring 22 Groove 22d.

Cylinder roller 23 has the par 23a of axis direction central part, extends to direction of both ends from this par 23a Cydariform portion 23b and end face 23c.Additionally, illustrate cydariform portion 23b in the drawings turgidly for the ease of understanding.Cylinder roller 23 Axis direction (long side direction) on size and pair of flanges portion 21a, 21a of above-mentioned outer ring 21 between size compared with somewhat Little.

Retainer ring 24 is preferably spring steel, be the part in circumference be truncated have end circle shape part, its cross section It is shaped so as to substantially bent axle shape.That is, retainer ring 24 has: the radial direction holding section 24e engaged with the radial slot 22c of inner ring 22； From blocking portion 24c that this is radially relative with roller end face 23c outside the axis direction of roller bearing 20 for holding section 24c；And will The axial holding section 24d as linking part that radially holding section 24e links with blocking portion 24c.This axial holding section 24d and inner ring The axial groove 22d engaging of 22.Additionally, the distance in the outside between two blocking portions 24c, 24c is set as and inner ring 22 axis side Width dimensions upwards is roughly the same, prevents the interference with miscellaneous part.It addition, outer diameter D d of axial holding section 24d and inner ring Outer diameter D b of roller surface 22a is compared and is somewhat set to path, as described later, by shape on the radial direction holding section 24e of retainer ring 24 Become to have layer difference portion, and prevent and the interference of roller end face 23c.

When retainer ring 24 is installed to inner ring 22, make from the expanding retainer ring 24 in inner ring side in fixing annular groove 22b Mobile, then make retainer ring 24 undergauge by bounce-back.

Then, the action of present embodiment is described.

In the continuous casting equipment shown in Fig. 1, according to the supply of slab FE, guide reel 4 with per minute 2～3 circles about Pole low speed rotation.The bearing arrangement 10 of supporting guide reel 4 rotatably supports guide reel 4 relative to housing main body 11.

Here, when guide reel 4 having been acted on big load from slab FE, guide reel bends, produce barrel roller bearing 20 Inner ring 22 relative to the gradient of housing main body 11.But, by being formed at axis direction (long side direction) two ends of roller 23 There is cydariform portion 23b, without producing problem based on edge load (edge load).

It addition, in the case of making because of slab FE guide reel 4 heated and producing thermal expansion, support with the 1st cylindrical portion 4b The direction displacement that the inner ring 22 of the left and right barrel roller bearing 20 connect leaves to each other.Meanwhile, it is arranged on inner ring 22 It is located at the direction displacement that the retainer ring 24 of the side close to guide reel is left the most to each other.Now, although roller 23 is due to outward Circle flange part 21a abuts without moving, but owing to guaranteeing between blocking portion 24c of roller end face 23c and retainer ring 24 Sufficient space s, so roller end face 23c will not abut with retainer ring 24 and cause retainer ring 24 to take off from fixing annular groove 22b Fall.It is possible to discharge the thermal expansion of guide reel 4.

Additionally, when this inner ring 22 displacement laterally, though assume axis direction (long side direction) size of roller with In the case of the situation of diagram is in a ratio of short size, also as described above, because the external diameter of the axial holding section 24d of retainer ring 24 Dd is somewhat path compared with outer diameter D b of inner ring raceway face 22a, so preventing roller end face 23c and inner ring raceway face 22a And layer between the axial holding section 24d of retainer ring 24 is poor abuts (interference).Therefore, will not occur if roller end face 23c is with solid Determine the radial direction holding section 24e abutting of ring 24, retainer ring 24 is pushed out and such situation that comes off to the inner side of roller bearing 20.

In contrast, make guide reel 4 cooled generation thermal contraction in the cooling direct shower of water in the case of, with annulus The direction displacement that the inner ring 22 of left and right barrel roller bearing 20 that part 15 abuts is the most close.Meanwhile, it is arranged on inner ring The direction displacement that the retainer ring 24 being located at the side away from guide reel 4 on 22 is the most close.

But, owing to ensure that sufficient space s between the blocking portion of roller end face and retainer ring 24, so in these feelings Under condition, roller end face 23c and retainer ring 24 also will not abut and make retainer ring 24 come off.It is possible to discharge the heat of guide reel 4 Shrink.When this inner ring 22 is to inner side displacement, also as described above, it is therefore prevented that with the interference of roller end face 23c, thus without making Retainer ring 24 is pushed out laterally.

Conventional retainer ring 124 and inner ring 122 is illustrated by double dot dash line in figure 3 in order to compare.Inner ring can be made Width only reduce 2d (=d+d), make the axis direction compact dimensions of bearing.

As it has been described above, according to the roller bearing 20 of present embodiment, it is possible between retainer ring 24 and roller end face 23c really Protect sufficient space s, thus without the expansion on the axis direction being guided roller 4 and the impact of contraction, it is possible to prevent from fixing Ring 24 comes off from inner ring 22, and can make the axis direction compact dimensions of roller bearing 20.

Additionally, this utility model should not be limited to explain in above-mentioned embodiment, certainly can suitably change and improve. The domain variability that such as roller bearing is suitable for is not limited to steel casting equipment, it is also possible to be applicable to paper machine and engineering machinery Deng, and various industrial machine can be applicable to.It addition, retainer ring can not be located at the both ends of inner ring, and it is located at any one end. It addition, also

Can be that two flanges are formed at inner ring, are provided with retainer ring on outer ring.

Claims (5)

1. a roller bearing, has inner ring, outer ring and is located between described inner ring and described outer ring and at axis direction two ends It is formed with multiple rollers of a pair end face, it is characterised in that described roller bearing has and is located at consolidating on described inner ring or outer ring Determining annular groove and retainer ring, this retainer ring has:

The radial direction holding section engaged diametrically with described fixing annular groove；

From this blocking portion that radially holding section is relative with described roller end face outside the axis direction of described roller bearing；With

The linking part that described radial direction holding section and this blocking portion are linked.

2. a continuous casting equipment, it is characterised in that there is the roller bearing described in claim 1.

3. a paper machine, it is characterised in that there is the roller bearing described in claim 1.

4. an engineering machinery, it is characterised in that there is the roller bearing described in claim 1.

5. an industrial machine, it is characterised in that there is the roller bearing described in claim 1.