CN1058638A

CN1058638A - Cover element for bearing

Info

Publication number: CN1058638A
Application number: CN 91103339
Authority: CN
Inventors: 威廉姆·罗斯
Original assignee: William - W - Adam
Current assignee: William - W - Adam
Priority date: 1990-04-24
Filing date: 1991-04-24
Publication date: 1992-02-12
Also published as: AU7656691A; CA2015240A1; WO1991016548A1; CA2015240C

Abstract

By the pillow block formula bearing of a covering protection, covering extends to the pillow block top and imitates the profile of pillow block by moulding basically.Comprise that also a slit that extends to an opening from the device lower is used to make axle to feed covering arrival opening.Covering is formed by polypropylene, and it is high elasticity and shock-resistant destruction.Lubricating grease is filled into one in the groove or gap between bearing face and the covering internal surface.In the device of a replacement, cover and to form by two-part, these two-part are sandwiched on the limit separately of plate of block bearing.Also have a slit and central opening to be inserted into the top of axle.

Description

Cover element for bearing

The present invention relates to a kind of cover element for bearing, the bearing of this form comprises an inner bearing spare that is used to retrain a rotatable axle, one is installed in an outer bearing spare in the supporting that matches, and be contained in bearing means in the annular cavity between the inside and outside part with the form of ball, to realize unconfined rolling friction.

The bearing of this general style is received in lubricating grease then by an end plate closes, and this end plate is fixed on one of these elements, so that the end face of bridge joint annular cavity.Yes is used in very widely in the various application and often uses in such occasion for the bearing of this style, and promptly it is open in by in the highly polluted environment of dust and other dirts.

This bearing has quite high rate of fault, thereby this often is to have increased friction and causing that wearing and tearing cause parts damages and often blocking owing to dirt enters bearing.This bearing seal structure has been given close attention, and the problem of a series of existence causes that the expense of the routine replacement of bearing is quite high.

A problem of this pattern bearing results from the operational phase and the heating and the cooling of stop phase middle (center) bearing, and can cause that grease pump goes out bearing, and the lubricating grease band dirt and entered bearing when cooling off, and dirt is in the bearing collected outside.

Therefore an object of the present invention is to provide a kind of bearing of improvement and the assembly parts of covering, make the protection of bearing improve and increased the life-span greatly.

Further aim of the present invention provides a kind of covering of particular design, and it can be used on the relevant pillow block.

A further object of the invention provides a kind of covering of particular design, and it can be used in the clamping between two dunnages of this bearing.

Embodiments of the invention are shown in the accompanying drawing, wherein:

Fig. 1 is an axonometric drawing that is used for pillow block bearing structure of the present invention.

Fig. 2 is the front elevation of the covering of Fig. 1;

Fig. 3 is the rear view of the covering of Fig. 1;

Fig. 4 is the sectional drawing along Fig. 2 line 4-4, has also represented the pillow block bearing structure;

Fig. 5 is the sectional drawing along Fig. 3 line 5-5, has represented bearing structure once more additionally;

Fig. 6 is the front elevation of a part of second kind of structure of covering;

Fig. 7 is the axonometric drawing of the covering of Fig. 6;

Fig. 8 is the rear view of the covering of Fig. 6;

Fig. 9 is the sectional drawing along the 9-9 line of Fig. 8, has represented an additional bearing structure.

Pillow block bearing in Fig. 5 with label 10 indications and comprise executing with respect to a dunnage 12 for one and change the axle 11 that ground is settled.Axle 11 has an inner bearing spare 13, and this part can be executed commentaries on classics together with axle.An outer bearing spare 14 places in the pillow block spare 15, and this pillow block spare has one at least in part round the upper wall portion of outer bearing spare and a pair of from the outwards outstanding flanges 16 and 17 of an annular brace part 18.

One group of ball 19 is housed between inside and outside bearing member, and for the ease of diagram, the retainer of supporting sephere is left out.Spheroid provides one to execute the inner ring or the bearing member of commentaries on classics with respect to the unconfined substantially friction of outer ring, can make axle 11 execute commentaries on classics with respect to dunnage 12 like this.One annular pass is arranged between inside and outside bearing member, and this passage provides the zone that holds ball 19.Passage is opened at the two ends of bearing and is covered by a bearing seal 20, and sealing is bound by inner bearing spare or outer bearing spare so that with respect to another rotation.Bearing seal is designed to keep lubricating grease and stop dirt to enter bearing in bearing.

Above-described pillow block and bearing unit have common character and have the example of very many this pattern devices of use, and use good.

The most at length be illustrated among Fig. 1,2 and 3 according to a covering provided by the invention, but be also illustrated in the mounting point of Figure 4 and 5.

Covering comprises pair of

sidewalls

25 and 26, pair of

end walls

27 and 28 and covering wall 29.Covering wall defines the cylindrical section 30 of a part, and cylindrical section 30 extends across the top of pillow block and has the curvature of the curvature of an imitation pillow block outer surface.On the both sides of cylindrical section 30, have a pair of surface that extends outwardly 31 and 32, they be lower edge from cylindrical section 30 tilt to down and outwardly separately

end wall

27 and 28 edge, top.As shown in Figure 2, sidewall has the shape that adapts with the covering wall edge in view.In the sidewall each respectively has an opening 34, and its size is wanted to hold axle 11 and at the outer surface of axle and the edge of opening 34 gap arranged slightly.

As shown in Figure 3,

sidewall

25 and 26 and covering wall 29 with respect to the size of covering be approach so that form the inside of a hollow, this inside can occupy-place on pillow block.

As the expression of Fig. 3 and 4 the bests,

sidewall

25 and 26 comprises a step 35 so that form thin part consistent with the bearing arrangement, defines a groove or gap like this, and it is between the internal surface of the outer surface of bearing and wall separately 25,26.In the sidewall each comprises a slit 36 that directly extends to the edge, the end of sidewall from the bottom of opening 34 down.This slit forms by the thermal cutting nappe, and this cutting has formed a slit that does not cut the material of any effective amount, so that the slit is closely under the loose situation covering.Further, the wall thickness place is crossed being parallel to be cut on the direction of axis so that the limit in slit is positioned at direct crosscut with the surface of wall as Fig. 3 shown in clearly with meeting at right angles in the slit.This seam is arranged in an axial plane like this.

This covers by elastomeric polypropylene and forms so that it can be from illustrated state of rest torsional deformation to a twisted state, the slit is crossed spool enter opening 34 up to axle thereby be fully opened by the distortion of sidewall in this slit.

Even temperature is low to-50 ℃, the polypropylene of this pattern also has very high elasticity and impact resistance.Ultraviolet inhibitor has stoped because sunlight acts on the damage that causes on the plastics thereby this material comprises.

This covering also comprises the device of constraint supporting element or flange 16,17, is used for fixing covering on bearing.More specifically, represent, often have the font 37 of protuberance on flange 16 and 17 the side surface as the best of Fig. 4.Step 35 allows to retrain the flange side surface with flange 16 and 17 one-tenth one rows'

wall

25 and 26 internal surface with press fit or frictional fit.Tending to admittedly the lower edge of sidewall like this enters downwards and the contacting of plate 12.The effect that is press fitted into the flange sidewall also tends to close slit 36.

Before annex entered common pillow block tip position, covering can have the lubricating grease of appropriate amount to enter its inside so that lubricating grease is fully inserted in the zone between the inner edge of bearing side and

sidewall

25,26.

Like this, the effect of covering is the damage that the protection bearing exempts from impact, moisture, dust and other dirts and sunlight, and these factors can fully cause the damage of bearing, axle and supporting element.

(not shown) in the example of a replacement, covering can have a medium-sized filling mouth in order to insert lubricating grease on the maintenance seat of a routine.On the other hand, covering can be holed and be affacted bearing outer wall so that a grease fitting passes to cover.For this purpose, cover and to have to become 90 ° of little protuberance 29A that locate, this mark and be used to the boring that the arrangement with common grease fitting matches and be provided with in the central position at covering wall 29 tops and with two walls.(not shown) in a further alternative, the size of single opening 34 can increase and have one separate and is capped the insertion seal arrangement that carries with covering, so as the constraint axle also more effective prevention lubricating grease spill and the entering of dirt.Surface 34 or settle abreast forming a cylindrical surface, or as shown in Figure 4 from the constant space of axle with axis, with the axle surface becomes be similar to 45 ground forms in case on the outer surface of covering with on than its internal surface more closely approaching.This can make in the acutangulate intersection of outer surface a more effective sealing.

Sidewall

25 and 26 and the adjacent face of bearing between the gap preferably be 1/6 inch at least.It pumps into covering and enter bearing then with the dirt that stops expansion and contraction to cause for the lubricating grease that holds a q.s is enough.

Forward Fig. 6 to 9 now to, shown the bearing structure of replacing, an axle 40 is installed with respect to a pair of plate 41 and 42 rotations and the operation that has opening at this, axle 40 passes this opening.In this case, each plate is deformed and forms a cup-

like portion

43,44 that is used for the outer ring 45 of bearing unit 46.Bearing unit comprises an inner ring 47 and spheroid 48.Inner ring 47 is connected to axle 40 and rotation together.Outer ring 45 is held by the cup shell that plate 41 and 42 distortion limit.The bearing means of this form is well-known and is used in many occasions on many dissimilar machines.

At this, covering device is formed by two-part, wherein each be roughly Fig. 6,7,8, shown in shape.Zhuan Zhi profile is the triangle on band chamfering top 50 substantially in this case, forms an irregular hexagon like this.On each top, be drilled with an opening 51 and extend axially along covering.Opening holds a whole thickness that is used for the metallic sheath 52 of stiffening element and extends through parts.The core of parts forms a counterbore 53, its external diameter and equates with plate 41 and the 42 cup-shaped outsides that limit basically.Opening 54 and hole 53 are coaxial and extend through the end wall of the parts that hole 53 limits.Example with the front is the same, and a seam 55 leads to an edge 56 of parts from opening 54 extensions.

As shown in Figure 9, two parts are different slightly, and one of them is thicker than another, and the hole 53 that defines parts like this is darker than the hole 53A of another parts.This device holds the assembly in the

cup shell

43 and 44 of plate 41 and 42 respectively.

On-stream, plain bolt is fixed together plate 41 and 42 in three positions around bearing, bearing be movably and covering stride across axle 40 by distortion and settle on the throne with seam 55 relevant parts.These parts are moved into the position of corresponding edge of bearing then so that bearing is placed in the cup in hole 53 and in the hole 53A of second portion.Metallic sheath 52 leans on plates 41 then has the opening 51 consistent with common opening on the plate with this strip of outer surface of 42.In this position, the bolt that increases length can insert opening 51 so that live to cover against plate holder, thereby provides a pressuring action that plate is fixed together so onboard and make bearing in place.Cover stops the compression of plastic pattern spare so that stop its distortion under the pressuring action of spiral fastener.

Cover as previously described and charged into lubricating grease to keep bearing covering fully and protection.

In an alternative embodiment (not shown), the position of the profile of opening 51 are changed so that have 4 such openings on one, and it is rectangle substantially in end elevation.

The example (not shown) that also has an application, bearing are contained in the portion of axle.Be provided with the protuberance outwardly of axle at this, opening 54 and seam 55 are omitted and cover the bolt that is run through parts and be clamped in the end of axle simply and enter in the bearing means of common arrangement.

In sum, bearing of the present invention and covering assembly parts comprise an axle, a supporting element, a bearing, this bearing comprises that is installed in axle is upward also executed commentaries on classics together with axle an inner bearing spare, an outer bearing spare has an outer periphery surface and define an annular cavity between inside and outside bearing member, the end face of chamber is positioned at the end of facing bearing coaxially, bearing means is installed in the internals that are used in the chamber support with respect to outer part, so that relatively execute commentaries on classics, outer bearing spare device is installed in the fixed position on supporting member, so that axle is executed commentaries on classics with respect to supporting member, a covering that is used for bearing comprises that an integrally formed plastics is to limit an end wall portion, this part covers one of described end face of described bearing, with the outer periphery part of the outer periphery surface of part outside the covering, this device constraint supporting member is so that fix described covering on described bearing.Wherein plastic materials is a kind of elastomeric polypropylenes.Wherein end wall portion comprises an opening round axle, and this end wall portion by from the one edge cuts to opening so that plastics around the axle restrained.Otch forms with slit of material, covers round axle with box lunch that all materials keep sealing with no damage the slit when restrained.The slit is arranged in an axial plane.Wherein end wall portion and peripheral wall portion separate from the part of bearing bottom, and wherein said restraint device and supporting member form a compression fit together.

Between the following part of peripheral wall portion and end wall portion and bearing, has 1/16 inch gap at least.Charge into lubricating grease in the gap.

Supporting member comprises a restrained pillow block against the plate of a bearing support, this pillow block comprise upper wall that a part is a cylindricality and a pair of from the rectangular supporting member of axle than the flange of lower part towards outer process, covering comprises that a part around the axis of bearing is the upper wall of cylindricality, a pair of with the axle a rectangular parallel side, there is an opening each side, opening and axis coaxle are so that hold axle, pair of end walls is to separate outwardly with the cylindrical wall of the rectangular direction of axis from part, each end wall is all in a plane of paralleling to the axis, in a pair of upper wall portion each extends to separately end wall from the cylindrical wall of part, a bottom of covering is opened to expose a hollow cavity, covering is pressed onto above the pillow block and this device defines pair of slits thus, each bar slit each since the following opening that extends to separately.Wherein each sidewall has an inner wall surface and is defining a groove with the bearing consistent location, inner wall surface is positioned at and the pillow block position contacting that separates from bearing substantially like this, and defines a gap to hold lubriation material between inner wall surface and bearing.

Supporting member comprises one first plate and one second plate, they are clamped together so that at the groove Rio bundle outer bearing spare round axle with the relation of substantially parallel contact, covering comprises the first portion on the one side that is installed in one of plate and is installed in second portion on one side of another plate so that the clamping plate, wherein each part has one to be used for around the opening of axle, slit extends to the outer rim of this part and the opening that runs through of one group of grip fastener that is used to hold run through from opening.

Wherein each parts is formed by elastic plastic material, and is wherein having a rigid insert to be used on the direction parallel with opening transmission power so that described plate is clipped together in each opening.

A covering that is used for the pillow block bearing means comprises an integrally formed plastics, plastics defines a upper wall around a part of cylindricality of the axis of bearing, a pair of and the rectangular parallel side of axis, each side has a coaxial opening in axis to be used to hold the axle of bearing means, pair of end walls is to separate outwardly with the cylindrical wall of the rectangular direction of axis from part, each end wall all is being positioned at a plane of paralleling to the axis, a pair of upper wall portion, wherein each all extends to separately end wall from the cylindrical wall of part, the bottom of a covering is opened to expose a hollow cavity, by being pressed onto on the pillow block bearing means than covering and defining pair of notches, each bar otch extends to separately opening from bottom.Wherein plastic materials is a kind of elastomeric polypropylenes.Wherein each otch forms with the slit of material so that when covering when axle retrains, all material maintenance nondestructively is used to seal the slit.The slit is arranged in an axial plane.

A kind of covering that is used for bearing unit comprises first plate and second plate that the relation with substantially parallel contact is clamped together, so that retrain one at the outer bearing spare in the groove of axle, covering comprises the first portion on the one side that is installed in one of plate and is installed in second portion on one side of another plate, so that clamp plate at this, each part is formed by elastic plastic material and has a groove that is used to retrain bearing, bottom portion of groove has around first opening of axle, an otch extends to an outside of this part from first opening, one group of second opening that runs through is used to hold fastening piece in the position that is separated by around described first opening, and each second opening has a rigid insert to be used for transmitting power so that described plate is clipped together in the direction that is parallel to opening.Wherein plastic materials is an elastomeric polypropylenes.Wherein otch forms with the slit of material, covers round axle with box lunch that all materials all keep nondestructively sealing the slit when restrained.The slit is arranged in an axial plane.

Claims

1, a bearing comprises an axle with the covering assembly parts, a supporting element, a bearing, this bearing comprises that is installed in axle is upward also executed commentaries on classics together with axle an inner bearing spare, an outer bearing spare has an outer periphery surface and define an annular cavity between inside and outside bearing member, the end face of chamber is positioned at the end of facing bearing coaxially, bearing means is installed in the internals that are used in the chamber support with respect to outer part, so that relatively execute commentaries on classics, outer bearing spare device is installed in the fixed position on supporting member, so that axle is executed commentaries on classics with respect to supporting member, a covering that is used for bearing comprises that an integrally formed plastics is to limit an end wall portion, this part covers one of described end face of described bearing, with the outer periphery part of the outer periphery surface of part outside the covering, this device constraint supporting member is so that fix described covering on described bearing.

2, assembly parts according to claim 1, wherein plastic materials is a kind of elastomeric polypropylenes.

3, assembly parts according to claim 1, wherein end wall portion comprises an opening round axle, and this end wall portion by from the one edge cuts to opening so that plastics around the axle restrained.

4, assembly parts according to claim 3, wherein otch forms with slit of material, covers round axle with box lunch that all materials keep sealing with no damage the slit when restrained.

5, assembly parts according to claim 4, wherein the slit is arranged in an axial plane.

6, assembly parts according to claim 1, wherein end wall portion and peripheral wall portion separate from the part of bearing bottom, and wherein said restraint device and supporting member form a compression fit together.

7, assembly parts according to claim 6 wherein has 1/16 inch gap at least between the following part of peripheral wall portion and end wall portion and bearing.

8, according to the described assembly parts of claim 7, charge into lubricating grease in its intermediate gap.

9, assembly parts according to claim 1, wherein supporting member comprises a restrained pillow block against the plate of a bearing support, this pillow block comprise upper wall that a part is a cylindricality and a pair of from the rectangular supporting member of axle than the flange of lower part towards outer process, covering comprises that a part around the axis of bearing is the upper wall of cylindricality, a pair of with the axle a rectangular parallel side, there is an opening each side, opening and axis coaxle are so that hold axle, pair of end walls is to separate outwardly with the cylindrical wall of the rectangular direction of axis from part, each end wall is all in a plane of paralleling to the axis, in a pair of upper wall portion each extends to separately end wall from the cylindrical wall of part, a bottom of covering is opened to expose a hollow cavity, covering is pressed onto above the pillow block and this device defines pair of slits thus, each bar slit each since the following opening that extends to separately.

10, assembly parts according to claim 9, wherein each sidewall has an inner wall surface and is defining a groove with the bearing consistent location, inner wall surface is positioned at and the pillow block position contacting that separates from bearing substantially like this, and defines a gap to hold lubriation material between inner wall surface and bearing.

11, assembly parts according to claim 1, wherein supporting member comprises one first plate and one second plate, they are clamped together so that at the groove Rio bundle outer bearing spare round axle with the relation of substantially parallel contact, covering comprises the first portion on the one side that is installed in one of plate and is installed in second portion on one side of another plate so that the clamping plate, wherein each part has one to be used for around the opening of axle, slit extends to the outer rim of this part and the opening that runs through of one group of grip fastener that is used to hold run through from opening.

12, assembly parts according to claim 11, wherein each parts is formed by elastic plastic material, and is wherein having a rigid insert to be used on the direction parallel with opening transmission power so that described plate is clipped together in each opening.

13, a covering that is used for the pillow block bearing means comprises an integrally formed plastics, plastics defines a upper wall around a part of cylindricality of the axis of bearing, a pair of and the rectangular parallel side of axis, each side has a coaxial opening in axis to be used to hold the axle of bearing means, pair of end walls is to separate outwardly with the cylindrical wall of the rectangular direction of axis from part, each end wall all is being positioned at a plane of paralleling to the axis, a pair of upper wall portion, wherein each all extends to separately end wall from the cylindrical wall of part, the bottom of a covering is opened to expose a hollow cavity, by being pressed onto on the pillow block bearing means than covering and defining pair of notches, each bar otch extends to separately opening from bottom.

14, covering according to claim 13, wherein plastic materials is a kind of elastomeric polypropylenes.

15, covering according to claim 13, wherein each otch forms with the slit of material so that when covering when axle retrains, all material maintenance nondestructively is used to seal the slit.

16, covering according to claim 15, wherein the slit is arranged in an axial plane.

17, a kind of covering that is used for bearing unit comprises first plate and second plate that the relation with substantially parallel contact is clamped together, so that retrain one at the outer bearing spare in the groove of axle, covering comprises the first portion on the one side that is installed in one of plate and is installed in second portion on one side of another plate, so that clamp plate at this, each part is formed by elastic plastic material and has a groove that is used to retrain bearing, bottom portion of groove has around first opening of axle, an otch extends to an outside of this part from first opening, one group of second opening that runs through is used to hold fastening piece in the position that is separated by around described first opening, and each second opening has a rigid insert to be used for transmitting power so that described plate is clipped together in the direction that is parallel to opening.

18, covering according to claim 17, wherein plastic materials is an elastomeric polypropylenes.

19, covering according to claim 17, wherein otch forms with the slit of material, covers round axle with box lunch that all materials all keep nondestructively sealing the slit when restrained.

20, covering according to claim 19, wherein the slit is arranged in an axial plane.