CN105465186A - Dust-prevention sealing component and bearing for preventing fluid from leaking through outer-circle sealing groove opening - Google Patents
Dust-prevention sealing component and bearing for preventing fluid from leaking through outer-circle sealing groove opening Download PDFInfo
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- CN105465186A CN105465186A CN201610002646.2A CN201610002646A CN105465186A CN 105465186 A CN105465186 A CN 105465186A CN 201610002646 A CN201610002646 A CN 201610002646A CN 105465186 A CN105465186 A CN 105465186A
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- dust
- bearing
- sealing assembly
- elastic material
- outer ring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
- F16C33/7806—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for spherical roller bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
- F16C33/7823—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region of sealing lips
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
- F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc
- F16C33/7853—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc with one or more sealing lips to contact the inner race
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Sealing Of Bearings (AREA)
Abstract
The invention discloses a dust-prevention sealing component and a bearing for preventing fluid from leaking through an outer-circle sealing groove opening. The typical structure of the dust-prevention sealing component is characterized in that an oil-resistant elastic material is adhered and hung onto at least one of the bottom surface, the top surface and the front surface of a dust-prevention cover crimping part; after the dust-prevention sealing component is punched into an outer circle sealing groove, the dust-prevention sealing component and the sealing groove form elastic interference contact due to the existence of the elastic material, so that the fluid lubricant in the bearing can be prevented from leaking through the outer-circle sealing groove opening, and fluid around the bearing is prevented from invading into the inner cavity of the bearing through the outer-circle sealing groove opening; the dust-prevention sealing performance of the bearing is greatly improved, so that the operation reliability of the bearing is obviously improved, and the service life of the bearing is obviously prolonged; the effect is more obvious for an outer circle swivel bearing and a bearing at a high acceleration/deceleration working condition; and the dust-prevention sealing component and the bearing have great engineering practical significance.
Description
Technical field
The present invention relates to extraordinary dust sealing assembly and extraordinary technical field of rolling bearings, particularly anti-fluid seals dust sealing assembly and the bearing of notch seepage from outer ring.
Background technique
If bearing seal is improper, oiling agent leaks in a large number, and bearing works under oil-poor or oil-free lubrication state, and bearing will lose efficacy very soon; If bearing is dust-proof improper, foreign enters bearing cavity, pollutes bearing lubricant, to significantly reduce the lubricating life of bearing, thus significantly reduce the fatigue life of bearing, therefore say, dust-proof and sealing has conclusive impact to the operational reliability of rolling bearing and service life.
In the dust sealing of bearing, the theoretical research person of association area and engineers and technicians have done a large amount of effort, by the sealing of design labyrinth structure, multi-lip seal, contact-type and even heavy-contact-type, the sealing vice division chief that oiling agent substantially can be avoided to form from dust seal and bearing inner race leaks.But along with main frame to more at a high speed, limitization future development, in engineering reality, find that lubricating grease gets more and more from the case of bearing outer ring sealing notch seepage, especially with the bearing that works under outer ring swivel bearing, high plus/minus speed environment for very, the bearing worked under so harsh operating mode, compare nominal situation, oiling agent is subject to larger centrifugal force and therefore gathers to outer ring seal groove mouth, and the risk that oiling agent leaks from outer ring sealing notch sharply raises.Current art metal dust-proof cover and skeleton rubber seal all can not significantly reduce the risk avoiding oiling agent to leak from outer lip even completely, this by engineering actual confirm, reason is also understood that.Metal dust-proof cover, the resiliently deformable at outer rim crimping position during punching press is relied on now to contact cooperation with outer ring seal groove cause for gossip, but this is the contact cooperation between metallic material and metallic material, and dust cover material is soft more than bearing outer ring material, the magnitude of interference that contact coordinates is little, Interference contact area is also smaller, and, in order to the abnormal deformation making punch riveting easily and not cause position beyond dust cover place crimping, slot at crimping circumference equal dividing, all these are all that oiling agent hides some dangers for from the leakage of outer ring sealing notch; Skeleton rubber seal, relies on the resiliently deformable of outer lip rubber and the existing interference fit of outer ring seal groove cause for gossip, but because the elasticity of rubber is very large, pliability is fine, also makes oiling agent become possibility from the leakage of outer ring sealing notch; Metal collar for microminiature bearing adds 2 combined sealing components of metal collar, oiling agent exist equally from outer ring sealing notch reveal hidden danger, concrete reason and metal dust-proof cover similar.
Due to fluid, especially there is lubricant oil and the lubricating grease of certain viscosity, metal surface to climb attached effect very strong, as above reason is analyzed, under the special operation conditions such as bearing outer ring rotation, high plus/minus speed, existing dust sealing component metals dust cover, skeleton rubber seal, metal collar add metal collar assembly parts etc. and are all difficult to stop that it is from bearing outer ring sealing notch seepage outward, this also confirm by engineering practice.The oiling agent of seepage not only pollutes main frame and at goods, and considerably reduce bearing operational reliability, become several times, tens times of ground shorten working life of bearing.Therefore, invent a kind of fluid that can stop, from the dust sealing assembly of bearing outer ring sealing notch seepage and bearing, there is very important practical meaning in engineering.
Fig. 1 is typical bearing outer ring seal groove shape, be made up of three faces, bottom surface, end face and above (also known as slope), current art dust cover, skeleton rubber seal, collar are exactly by the Elastic Contact with these three faces thus are fixed together with outer ring, formed contactless with the seal groove on bearing inner race rib or inner ring or contact seal is secondary, thus make a whole set of bearing have certain dust sealing effect.But due to outer rim place be not with elastic material (as dust cover, collar etc.) though or band elastic material but very soft, it fastens on three faces of seal groove not have foreign compulsion, therefore, does not all have to form effective elasticity Interference contact with outer ring seal groove.
Fig. 2 A is prior art dust cover, substantially outer rim can be divided into, inner edge and marginal middle part, outer rim can be subdivided into bottom surface again, end face and above, correspond respectively to the bottom surface of outer collar dustproof groove, end face and above, dust cover is stamped in bearing outer ring seal groove, form band dust cover stuffing box bearing as shown in Figure 2 B, this bearing is by outer ring 21, inner ring 22, rolling element 23, retainer 24, oiling agent 25, dust cover 26 formed, the bottom surface of dust cover outer rim crimping can be found out, end face and above respectively with the bottom surface of bearing outer ring seal groove, end face contacts with being formed above, thus dust cover 26 and bearing outer ring 21 are fixed together.Because dust cover 26 and bearing outer ring 21 are generally all metallic material, they are in seal groove bottom surface, end face, contact above, its contact area can't be very large, contact also can not be very honest, it contacts and non-resilient interference, add the existence of foozle, when along the circumferential direction totally presenting contact, likely gap is there is in local pole, and in bearing rotary process, due to centrifugal force and effect of expanding with heat and contract with cold, these positions contacted under off working state, also very likely occur in working order disengaging, form gap, due to the fluid lubricant such as lubricating grease of injection bearing inner chamber, its base oil has stickiness, climb attached property very strong, will from these micro-gaps continuous seepage, seriously jeopardize the operational reliability of bearing, service life, in the performance of goods and main frame, to some main frames such as elevators, this seepage also likely jeopardizes operation and personal safety.
Fig. 3 A is the skeleton rubber seal of prior art, Fig. 3 B is the bearing of this seal ring of dress, the rubber of skeleton rubber seal head by with seal groove bottom surface, outer ring, end face is arranged on bearing outer ring with contacting above, this contacts because rubber is elastomer, it is elasticity Interference contact, but the metal frame due to seal ring does not extend to head (because extend to the words of head, whole seal ring just cannot enter inside seal groove from seal groove notch), so, the contact force of the elasticity Interference contact that seal ring head and seal groove are formed is little, in operation process, by the impact of centrifugal force with factor of expanding with heat and contract with cold, elasticity Interference contact will become the very little elasticity interference of contact force, even become micro-gap, fluid lubricant will be taken advantage of the crack and enter, leak out.
Fig. 4 A is collar, the back-up ring combination seal that prior art microminiature bearing adopts, and Fig. 4 B is the microminiature bearing with this combination seal.For power when preventing punching press dust cover and skeleton rubber seal causes race deformation and the precision change of microminiature bearing, so adopt this combination seal.Not hard to imagine, be with the bearing of dust cover the same with Fig. 2 B, owing to not forming elasticity Interference contact between combination seal and outer collar dustproof groove, bearing cavity fluid lubricant seals the leakage of notch under some special operation condition conditions from outer ring, just become inevitable.
Therefore, a kind of anti-fluid is provided to seal dust sealing assembly and the bearing of notch seepage from outer ring, make bearing all can not seal notch at the working condition lower seal of any harshness from outer ring at interior fluid lubricant to reveal, the flowing medium of bearing periphery also can not seal notch and infiltrate bearing cavity from outer ring, just seem very urgent and necessary.
Summary of the invention
The first object of the present invention is the dust sealing assembly providing a kind of anti-fluid from bearing outer ring sealing notch seepage, oiling agent can not be stoped from the technical problem of bearing outer ring seal groove seepage to solve the dust sealing assemblies such as existing metal dust-proof cover, skeleton rubber seal.
The second object of the present invention is to provide a kind of anti-fluid from the rolling bearing of bearing outer ring sealing notch seepage, to solve technical quality problems and safety problem that oiling agent that existing rolling bearing exists under certain working condition becomes several times, tens times to reduce with main frame, bearing operational reliability with service life at goods from outer ring seal groove seepage and the seepage lubricant contamination that causes thus.
The present invention is the dust sealing assembly of a kind of anti-fluid from bearing outer ring sealing notch seepage, it is characterized in that: the monomer composite structure that described dust sealing assembly is made up of metal dust-proof cover outer rim bonding elastic material, or the composite structure to be combined with one heart by two or more part axials, one of them part is made up of elastic material completely or this part is made up of metallic material but its outer rim bonding elastic material, inner layout, another part is collar, outer layout, residue part is arranged between two parties.
Described dust sealing assembly, it is characterized in that: the dust sealing assembly of described monomer composite structure, metal dust-proof cover comprises inner edge for the pure metal dust cover of " L " type crimping and inner edge are not with metal crimping but by the band rubber seal lip metal dust-proof cover of sulfuration process sticking rubber sealing lip, the elastic material of metal dust-proof cover outer rim bonding, more preferably, for oil resistant rubber, bondd by sulfuration process.
Described dust sealing assembly, it is characterized in that: the dust sealing assembly of described composite structure, comprise plain washer and metal dust-proof cover two parts that elastic material makes, the outer axial arranged concentric of the inner dust cover of plain washer, more preferably, selected elastic material is oil resistant rubber.
Described dust sealing assembly, it is characterized in that: the dust sealing assembly of described composite structure, comprise metal collar two parts of collar and outer edge bonding elastic material, the outer axial arranged concentric of the inner collar of back-up ring, more preferably, selected elastic material is oil resistant rubber, is bondd by sulfuration process.
Described dust sealing assembly, it is characterized in that: the dust sealing assembly of described composite structure, comprise plain washer three parts that collar, metal collar and elastic material are made, plain washer is inner, back-up ring is placed in the middle, the outer axial arranged concentric of collar, more preferably, selected elastic material is oil resistant rubber.
Described dust sealing assembly, it is characterized in that: the metal dust-proof cover of described outer rim bonding elastic material, elastic material be bonded in that dust cover contacts with bearing outer ring seal groove one is on all surfaces, for improving adhesion strength, bonded part may extend to bending that dust cover do not contact with seal groove on the surface.
Described dust sealing assembly, it is characterized in that: the metal collar of described outer rim bonding elastic material, elastic material be bonded in that back-up ring outer rim contacts with bearing outer ring seal groove and collar one is on all surfaces, for improving adhesion strength, bonded part may extend on the top that back-up ring do not contact with collar with seal groove.Contact surface has three, front, top, the end.Therefore, one also can be described as part or all of surface to all surfaces, refers to any one in three, also can refer to any two in three.
A kind of anti-fluid is from the rolling bearing of outer ring sealing notch seepage, comprise bearing outer ring, inner ring, rolling element, retainer, fluid lubricant and dust sealing assembly, it is characterized in that, dust sealing assembly is described anti-fluid seals notch seepage dust sealing assembly from outer ring, and this dust sealing assembly is by sealing the radial direction of notch or/and axial Interference contact is arranged on bearing outer ring with outer ring.
Described rolling bearing, it is characterized in that, the dust sealing assembly be installed on it is described monomer composite structure, dust cover is fixed in the seal groove of outer ring by the resiliently deformable of outer rim crimping, the elastic material folder lining of dust cover outer rim bonding, between dust cover and the faying surface of seal groove, forms elasticity Interference contact.
Described rolling bearing, it is characterized in that, the dust sealing assembly be installed on it is described composite structure, the plain washer that elastic material is made is inner, metal dust-proof cover is outer, dust cover is fixed in the seal groove of outer ring by the resiliently deformable of outer rim crimping, elastic material plain washer folder lining, between dust cover and the faying surface of seal groove, forms elasticity Interference contact.
Described rolling bearing, it is characterized in that, the composite structure described in dust sealing assembly be installed on it, the metal collar of outer edge bonding elastic material is inner, collar is outer, both are fixed in the seal groove of outer ring by the resiliently deformable of collar, and elastic material folder serves as a contrast at back-up ring and seal groove, between ring washer and the faying surface of collar, forms elasticity Interference contact.
Described rolling bearing, it is characterized in that, the dust sealing assembly be installed on it is described composite structure, the plain washer that elastic material is made is inner, collar is outer, back-up ring is placed in the middle, three is fixed in the seal groove of outer ring by the resiliently deformable of collar, elastic material folder lining, between back-up ring and the faying surface of seal groove, forms elasticity Interference contact.
Anti-fluid is from the monomer composite dust-proof black box of outer ring seal groove seepage, at existing metal dust-proof cover outer rim place bonding elastic material, the preferred oil resistant rubber of elastic material, such as nitrile rubber, lactoprene, fluorine rubber etc., the preferred sulfuration of bonding mode.Because will at dust cover outer rim sulfuration sticking rubber, therefore, although selected metal dust-proof cover is the same at materials and structures formal co-occurrence row metal dust cover, but the size essential factor sulfuration sticking rubber at outer rim position and adjusting accordingly, such as, when outer ring seal groove size constancy, size before metal dust-proof cover kiss-coating will be more smaller than existing metal dust-proof cover, reserve the space of the thickness after elastic material compressive deformation, to ensure that simple efficient and this dust sealing assembly of sulfuration process is pressed fit into after in bearing outer ring seal groove by impact style, rubber is clipped between dust cover outer rim end face and seal groove end face, between dust cover outer rim bottom surface and seal groove bottom surface, before dust cover outer rim and between seal groove slope, form elasticity Interference contact, play and stop bearing in-lubricant from bearing outer ring sealing notch toward seepage bearing and stop bearing outer fluid and fine dust to enter the effect of bearing cavity from bearing outer ring sealing notch, thus obtained anti-fluid is from the rolling bearing of bearing outer ring sealing notch seepage.
Anti-fluid is from the dust sealing assembly of the composite structure of outer ring sealing notch seepage, comprise metal dust-proof cover and rubber washer two parts of axial arranged concentric, the first small pieces of cloth used for patches of rubber washer is on bearing outer ring seal groove bottom surface, then metal dust-proof cover is put into, metal dust-proof cover is molded into after in seal groove, rubber washer is just extruded and is pasted between dust cover and seal groove, form elasticity Interference contact, play and stop bearing in-lubricant from bearing outer ring sealing notch toward bearing external leakage and stop bearing outer fluid and fine dust to enter the effect of bearing cavity from bearing outer ring sealing notch, thus obtained anti-fluid is from the rolling bearing of outer ring sealing notch seepage.
Anti-fluid is from the dust sealing assembly of the composite structure of outer ring sealing notch seepage, to microminiature bearing, the precision deterioration problem of the bearing outer ring caused for avoiding dust cover punching press and a whole set of bearing, current art does not often adopt edge-curled type dust cover, but employing metal collar, and with metal collar, metal collar is locked in bearing outer ring seal groove.Metal collar adds metal collar black box, and does not form elasticity Interference contact between bearing outer ring seal groove, and fluid just can not be stoped completely from bearing outer ring sealing notch seepage outward.Dust sealing assembly of the present invention, be made up of metal collar and back-up ring equally, but pass through sulfuration sticking rubber in the outer rim of metal collar, like this, at metal collar, the metal collar of outer rim kiss-coating is locked after in bearing outer ring seal groove, rubber is just extruded and is pasted between metal collar and seal groove and between metal collar and metal collar, form elasticity Interference contact, play and stop bearing in-lubricant from bearing outer ring sealing notch toward bearing external leakage and stop bearing outer fluid and fine dust to enter the effect of bearing cavity from bearing outer ring sealing notch, thus obtained anti-fluid is from the rolling bearing of outer ring sealing notch seepage.
Dust sealing assembly of the present invention, elastomer need be bonded in the position contacted with outer ring seal groove, like this, be arranged on after on bearing outer ring at dust sealing assembly, elasticity Interference contact could be formed between dust sealing assembly and bearing seal groove, thus prevent fluid lubricant from outer ring sealing notch seepage outward, certainly, convenient in order to improve adhesion strength and bonding process, also bonding can be extended on dust sealing assembly and outer ring seal groove discontiguous position.
Dust sealing assembly of the present invention, be conceived to anti-fluid from outer ring sealing notch seepage, namely the sealing pair formed between dust sealing assembly and outer ring is conceived to, therefore, do not repel and be restricted to the dust sealing ability improving the sealing pair formed between dust sealing assembly and inner ring and the various technical measures taked and means.Such as, the metal dust-proof cover mentioned in dust sealing assembly of the present invention just includes pure metal dust cover and the inner edge place inner edge kiss-coating metal dust-proof cover not with " L " type crimping with rubber seal lip of inner edge place band " L " type crimping.
Also can according to the know-why of above-mentioned prevention fluid from the dust sealing assembly of outer ring sealing notch seepage, the obtained fluid that stops is from the dust sealing assembly of inner ring sealing notch seepage, at this moment, need the seal groove offered on inner ring required for fixing dust sealing assembly, need the dust sealing assembly making inner edge bonding elastic material, dust sealing assembly is fit into after in bearing inner race seal groove, elasticity Interference contact is formed between dust sealing assembly and inner ring seal groove, thus anti-fluid is from inner ring sealing notch seepage, when bearing installation stops fluid to seal the dust sealing assembly of notch seepage from inner ring, just obtained anti-fluid is from the rolling bearing of inner ring sealing notch seepage.If bearing leakage performance requires high, when bearing axial space allows, the seal groove of the fixing dust sealing assembly of processing can be designed on bearing outer ring and inner ring simultaneously, install simultaneously and stop fluid from the dust sealing assembly of outer ring sealing notch seepage and stop fluid from the dust sealing assembly of inner ring sealing notch seepage, just can obtain the high rolling bearing of leakage performance.
The present invention stops fluid to seal dust sealing assembly and the bearing of notch seepage from outer ring, the steel used in dust sealing assembly include but not limited to low carbon steel and stainless steel, and the elastic material used includes but not limited to oil resistant rubber, oil resistant plastics, resistance to asphalt felt.
The present invention stops fluid to seal dust sealing assembly and the bearing of notch seepage from outer ring, is applicable to and the dust sealing assembly of all types, structure, size and rolling bearing.
Accompanying drawing explanation
Fig. 1 is bearing outer ring seal groove
Fig. 2 A, Fig. 2 B are respectively current art dust cover and the bearing with this dust cover
Fig. 3 A, Fig. 3 B are respectively the bearing of current art seal ring and band sealing circle
Fig. 4 A, Fig. 4 B are respectively the bearing of current art collar, back-up ring combination seal and band sealing
Fig. 5 A, Fig. 5 B are respectively the dust sealing assembly of dust cover outer rim local and whole sticking rubber
Fig. 6 is the bearing adopting dust cover outer rim sticking rubber dust sealing assembly
Fig. 7 A, Fig. 7 B are the dust sealing assembly of the equal sticking rubber of dust cover outer rim and inner edge
Fig. 8 is the bearing adopting dust cover outer rim and inner edge equal sticking rubber dust sealing assembly
Fig. 9 is the dust sealing assembly of dust cover and rubbery flat gasket circle composition
Figure 10 is the bearing adopting dust cover and rubbery flat gasket circle dust sealing assembly
The dust sealing assembly that the back-up ring that Figure 11 A, 11B are respectively collar and outer rim local and whole sticking rubber forms
Figure 12 is the bearing of the dust sealing assembly adopting the back-up ring of collar and outer rim sticking rubber to form
Figure 13 is the dust sealing assembly of collar, back-up ring, rubbery flat gasket circle composition
Figure 14 is the bearing of the dust sealing assembly adopting collar, back-up ring, rubbery flat gasket circle composition
Embodiment
Under bearing outer ring rotation, there is the harsh working conditions such as high acceleration/deceleration, due to the impact of centrifugal force, lubricating grease in bearing or the base oil in lubricating grease can be assembled toward bearing outer ring sealing notch place, and because fluid lubricant stickiness and climb attached property and from outer ring sealing notch ooze out or reveal, cause bearing premature failure.Certainly, when bearing periphery exists external fluid medium, these flowing mediums also very likely infiltrate bearing cavity from bearing outer ring sealing notch, once occur, pollute the oiling agent of bearing cavity, can cause bearing early failue equally.Fluid or colloid to infiltrate bearing cavity by black box with the micro-gap existed between the seal groove of outer ring or leak from bearing cavity from outside, the not only operational reliability of entail dangers to bearing and service life, but also harm can be brought to main frame or at goods, time serious, even entail dangers to some type main frame such as elevator safe operation and and then jeopardize personal safety, therefore, the great attention in correlation engineering field has been caused.
The invention provides a kind of anti-fluid from the dust sealing assembly of outer ring sealing notch seepage and the bearing adopting this black box, its basic ideas are exactly the contact area layout elastomer between similar current art dust cover and outer ring seal groove, such as rubber, make dust sealing assembly and outer ring seal groove in bottom surface, end face and form elasticity Interference contact between at least one face, three faces above, thus thoroughly block dust sealing assembly with the micro-gap between the seal groove of outer ring, stop bearing inner fluid oiling agent if lubricating grease leakage from here or external fluid are from here toward the infiltration of bearing cavity, thus some stopping because oiling agent leakage or foreign are infiltrated bearing and caused arrange possible hidden danger and harm.
Below in conjunction with accompanying drawing, describe the present invention in detail.
Embodiment one, the dust sealing assembly of dust cover outer rim sticking rubber
As shown in Figure 5A, for the dust sealing assembly of dust cover outer rim local bonding rubber, local bonding refers to the bottom surface in dust cover outer rim, end face and have at least a place to be bondd oil resistant rubber by sulfuration process above, certainly, for increasing adhesion strength, can adhesive surface be expanded to dust cover chamfered portion, but the viscose glue of dust cover inclined-plane and chamfered portion there is no chance and contacts with bearing outer ring dustproof groove, what Fig. 5 A provided is the dust sealing assembly that dust cover bottom surface and inclined-plane sticking rubber are formed, this dust sealing assembly is closely similar with current art dust cover in design, difference is exactly to have been bondd oil resistant rubber by sulfuration process on the bottom surface and inclined-plane of dust cover outer rim, this dust sealing assembly is the same with current art dust cover, by in punch die press-in bearing outer ring seal groove, after only in this dust sealing assembly press-in bearing outer ring seal groove, due to bottom surface kiss-coating, elasticity Interference contact is formed with dustproof groove bottom surface, the fluid lubricant being sealed in bearing cavity is due to cannot by this elasticity Interference contact region, so there is no chance reveal from outer ring sealing notch, in like manner, if the external environment condition of bearing working has flowing medium, flowing medium cannot infiltrate bearing cavity by this elasticity Interference contact region equally.
As shown in Figure 5 B, for the dust sealing assembly of the whole sticking rubber of dust cover outer rim, whole bonding refers in the bottom surface of dust cover outer rim, end face and all being bondd oil resistant rubber by sulfuration process above, certainly, for increasing adhesion strength, can expand mucilage glue surface to dust cover chamfered portion, but the viscose glue of dust cover inclined-plane and chamfered portion there is no chance contacts with bearing outer ring dustproof groove.This dust sealing assembly is closely similar with current art dust cover in design, difference is exactly to have been bondd oil resistant rubber by sulfuration process in dust cover outer rim, this dust sealing assembly is the same with current art dust cover, by in punch die press-in bearing outer ring seal groove, after only in this dust sealing assembly press-in bearing outer ring seal groove, due to outer rim kiss-coating, with dustproof groove bottom surface, end face, all form elasticity Interference contact above, the fluid lubricant being sealed in bearing cavity is due to cannot by these elasticity Interference contact regions, so there is no chance reveal from outer ring sealing notch, in like manner, if the external environment condition of bearing working has flowing medium, flowing medium cannot infiltrate bearing cavity by these elasticity Interference contact regions equally.
Embodiment two, adopt the bearing of dust cover outer rim sticking rubber dust sealing assembly
Bearing shown in Fig. 6, comprise bearing outer ring 61, inner ring 62, rolling element 63, retainer 64, lubricating grease 65 and dust sealing assembly 66, dust sealing assembly 66 is exactly the dust sealing assembly of the dust cover outer rim sticking rubber described in embodiment one, what this enforcement adopted is the dust sealing assembly at dust cover outer rim bottom surface sticking rubber shown in Fig. 5 A, in the seal groove of dust sealing assembly 66 by mould press-in outer ring 61, in bottom surface, end face, form Interference contact above, but because dust sealing assembly 66 is at bottom surface kiss-coating, therefore, what formed with the bottom surface of outer ring 61 seal groove is elasticity Interference contact, due to the existence of this elasticity Interference contact, even if under this bearing operates in very harsh work condition environment, lubricating grease 65 does not have possibility from the seal groove of bearing outer ring 61 toward bearing external leakage yet, thus ensure that operational reliability and the service life of bearing and even main frame.
Embodiment three, the dust sealing assembly of the equal sticking rubber of dust cover outer rim and inner edge
Current art dust cover, as shown in Figure 2 A, at inner edge place, is " L " type crimping, and it is secondary that this crimping and bearing inner race rib or seal groove form dust sealing, but this dust sealing pair can only be contactless, the ability of dust sealing and limited efficiency.In order to improve the dust sealing ability between itself and bearing inner race, the crimping of dust cover inner edge can be taken away, to be bondd oil resistant rubber by sulfuration process at inner edge place, these rubber seal lips can form mazy type, contact seal with bearing inner race rib or seal groove.As described in embodiment one and embodiment two, for improving the dust sealing ability between dust sealing assembly and bearing outer ring, need at dust cover outer rim kiss-coating.Therefore, for improving dust sealing assembly and the dust sealing ability between bearing outer ring and bearing inner race simultaneously, need to pass through sulfuration process sticking rubber in dust cover outer rim and inner edge simultaneously, if bearing is not very large, just can at dust cover side entire body kiss-coating.
Fig. 7 A gives dust cover inner edge and the equal sticking rubber of outer rim, but middle part does not have the dust sealing assembly of sticking rubber, is suitable for the dust sealing assembly that size is larger; Fig. 7 B gives the dust sealing assembly of dust cover side entire body sticking rubber, is suitable for the dust sealing assembly that size is little.As can be seen from Fig. 7 A and 7B, dust cover, without inner edge crimping, the substitute is rubber seal lip.This dust sealing assembly pours in bearing outer ring seal groove by mould, forms elasticity Interference contact between dust cover outer rim and bearing outer ring seal groove, between dust cover inner edge rubber seal lip and inner ring rib, form contact seal.
Embodiment four, adopt the bearing of dust cover outer rim and inner edge equal sticking rubber dust sealing assembly
Bearing shown in Fig. 8, comprises the dust sealing assembly that outer ring 81, inner ring 82, rolling element 83, retainer 84, lubricating grease 85 and dust sealing assembly 86,86 are exactly the dust cover side entire body sticking rubber described in embodiment three Fig. 7 B.In the seal groove of dust sealing assembly 86 by mould press-in outer ring 81, and form elasticity Interference contact at the dust cover outer rim kiss-coating place of dust sealing assembly 86 and the sealing groove face of outer ring 81, thus prevent the lubricating grease 85 in bearing from the seal groove seepage outward of outer ring 81; Form mazy type between the rubber seal lip at position, dust cover inner edge of dust sealing assembly 86 and the rib of bearing inner race 82 to contact and seal simultaneously, increase substantially the dust sealing ability of bearing inner race sealing pair.Adopt the bearing of dust cover side entire body sticking rubber dust sealing assembly to have equally and stop the fluid outside bearing or dust medium to infiltrate the ability of Bearing inner.
Embodiment five, the dust sealing assembly of dust cover and rubbery flat gasket circle composition
As shown in Figure 9, this dust sealing assembly comprises a dust cover and a rubbery flat gasket circle, dust cover is outer, rubbery flat gasket circle is by inner, both retainer shafts are to one heart, the rib diameter that the external diameter of rubbery flat gasket circle is not less than outer ring adds 0.5 millimeter, be not more than seal groove groove top, outer ring diameter, 2 groove top width degree, 2 slope length sums, this dust sealing assembly is as follows toward the erection sequence in bearing outer ring seal groove: first rubbery flat gasket circle is put into bearing outer ring seal groove, then dust cover is poured with mould, at this moment, dust cover is while being fixed on oneself in the seal groove of outer ring, also rubbery flat gasket circle is fixed between dust cover and bearing outer ring seal groove, and at dust cover, rubbery flat gasket circle, the contact position of bearing outer ring seal groove three forms elasticity Interference contact.
Embodiment six, adopt the bearing of dust cover and rubbery flat gasket circle dust sealing assembly
As shown in Figure 10, bearing comprises outer ring 101, inner ring 102, rolling element 103, retainer 104, lubricating grease 105, dust sealing assembly 106, wherein dust sealing assembly 106 is as described in embodiment five, be made up of rubbery flat gasket circle 1061 and dust cover 1062, the rib diameter that the external diameter of rubbery flat gasket circle 1061 is not less than outer ring adds 0.5 millimeter, is not more than seal groove groove top, outer ring diameter, 2 groove top width degree, 2 slope length sums.During assembling, first put into bearing outer ring seal groove by axially concentric to rubbery flat gasket circle 1061 and bearing outer ring 101, then with mould, dust cover 1062 is poured in bearing outer ring seal groove, rubbery flat gasket circle 1061 is clamped between the seal groove of dust cover 1062 and outer ring 101, form elasticity Interference contact, thus prevent the lubricating grease 105 in bearing from leaking out from the seal groove of bearing outer ring 101.
Embodiment seven, the dust sealing assembly that the back-up ring of collar and outer rim sticking rubber forms
To microminiature bearing seal, the race deformation caused when being pressed in the seal groove of outer ring for avoiding dust cover or skeleton rubber seal and precision deterioration, back-up ring is adopted to add the sealing means of collar, back-up ring puts into collar after putting into seal groove, collar is while being fixed in the seal groove of outer ring by self, be fixed on by back-up ring in seal groove, back-up ring plays the effect of dust sealing.Such dust sealing assembly, under the working condition of harshness, the fluid lubricant of sealing can leak out from bearing outer ring seal groove in bearing, and for avoiding this risk, the present invention to be bondd oil resistant rubber by sulfuration process in the outer rim of back-up ring.
Figure 11 A is the dust sealing assembly of the back-up ring composition of collar and outer rim bottom surface sticking rubber, back-up ring is by inner, and collar is outer, and both axially with one heart, this dust sealing assembly is arranged on after in bearing outer ring seal groove, and rubber and the seal groove bottom surface, outer ring of back-up ring bottom surface bonding form elasticity Interference contact.
Figure 11 B is the dust sealing assembly of back-up ring composition of collar and outer rim bottom surface, end face, the equal sticking rubber in outside, back-up ring is by inner, collar is outer, both axially with one heart, this dust sealing assembly is arranged on after in bearing outer ring seal groove, rubber and the seal groove bottom surface, outer ring of back-up ring bottom surface bonding form elasticity Interference contact, form elasticity Interference contact outside back-up ring with the rubber of end face bonding and collar, seal groove.
Embodiment eight, the bearing of the dust sealing assembly adopting collar and outer rim sticking rubber back-up ring to form
As shown in figure 12, bearing comprises outer ring 121, inner ring 122, rolling element 123, retainer 124, lubricating grease 125, dust sealing assembly 126, wherein dust sealing assembly 126 is as shown in Figure 11 A of embodiment seven, comprise back-up ring 1261 and the collar 1262 of outer rim place sticking rubber, collar 1262 relies on resiliently deformable to be fixed in the seal groove of outer ring 121 by oneself and back-up ring 1261, at the position of back-up ring outer rim kiss-coating, form elasticity Interference contact with the seal groove of outer ring 121, thus the lubricating grease 125 in bearing is had no chance from the seal groove seepage of bearing outer ring 121.
Embodiment nine, the dust sealing assembly of collar, back-up ring, rubbery flat gasket circle composition
As shown in figure 13, dust sealing assembly is made up of collar, back-up ring, rubbery flat gasket circle, rubbery flat gasket circle by inner, collar is outer, back-up ring axial arranged concentric placed in the middle, the sequencing putting into bearing seal groove is rubbery flat gasket circle, back-up ring, collar, while collar relies on resiliently deformable oneself to be fixed in bearing outer ring seal groove, also back-up ring, rubbery flat gasket circle are fixed in the seal groove of outer ring, further, back-up ring and rubber washer, form elasticity Interference contact between rubber washer and seal groove bottom surface, outer ring.
Embodiment ten, adopt the bearing of the dust sealing assembly of collar, back-up ring, rubbery flat gasket circle composition
As shown in figure 14, bearing comprises outer ring 141, inner ring 142, rolling element 143, retainer 144, lubricating grease 145, dust sealing assembly 146, wherein dust sealing assembly 146 is as described in embodiment nine, by rubbery flat gasket circle 1461, back-up ring 1462, collar 1463 forms, collar 1463 relies on resiliently deformable by oneself, back-up ring 1462 and rubbery flat gasket circle 1461 are fixed in the seal groove of outer ring 141, back-up ring 1462 and rubber washer 1461, elasticity Interference contact is formed between rubber washer 1461 and seal groove bottom surface, outer ring 141, this elasticity Interference contact can stop lubricating grease 145 from the seal groove seepage of bearing outer ring 141.
Above-described embodiment is contrast conveniently with current art, all adopt single-groove grooved ball bearing, in fact, the know-why that the anti-fluid of the present invention adopts from dust sealing assembly and the bearing of outer ring sealing notch seepage and scheme are suitable for the shaping rolling bearing of all types, all material, all sizes, all technological methodes, can also be as required, adopt wherein a kind of dust sealing assembly of the present invention to the side of bearing, opposite side adopts another dust sealing assembly.
Be only several specific embodiments of the application above, but the application is not limited thereto, the changes that any person skilled in the art can think of, all should drops in the protection domain of the application.
Claims (14)
1. an anti-fluid is from the dust sealing assembly of bearing outer ring sealing notch seepage, it is characterized in that: described dust sealing assembly comprises the monomer composite structure be made up of metal dust-proof cover outer rim bonding elastic material, or the composite structure to be combined with one heart by two or more part axials, one of them part is made up of elastic material completely or this part is made up of metallic material but its outer rim bonding elastic material, to make bearing dust sealing assembly and bearing outer ring seal groove in bottom surface, end face and form elasticity Interference contact between at least one face, three faces above, blocking micro-gap each other.
2. dust sealing assembly as claimed in claim 1, it is characterized in that: the composite structure combined with one heart by two or more part axials, the inner layout of part of its part be made up of elastic material or outer rim bonding elastic material, another part is collar, outer layout, residue part is arranged between two parties.
3. dust sealing assembly according to claim 1, it is characterized in that: the dust sealing assembly of described monomer composite structure, metal dust-proof cover comprises inner edge for the pure metal dust cover of " L " type crimping and inner edge are not with metal crimping but by the band rubber seal lip metal dust-proof cover of sulfuration process sticking rubber sealing lip, the elastic material of metal dust-proof cover outer rim bonding, for oil resistant rubber, bondd by sulfuration process.
4. dust sealing assembly according to claim 1, it is characterized in that: the dust sealing assembly of described composite structure, comprise plain washer and metal dust-proof cover two parts that elastic material makes, the outer axial arranged concentric of the inner dust cover of plain washer, selected elastic material is oil resistant rubber.
5. dust sealing assembly according to claim 1, it is characterized in that: the dust sealing assembly of described composite structure, comprise metal collar two parts of collar and outer edge bonding elastic material, the outer axial arranged concentric of the inner collar of back-up ring, selected elastic material is oil resistant rubber, is bondd by sulfuration process.
6. dust sealing assembly according to claim 1, it is characterized in that: the dust sealing assembly of described composite structure, comprise plain washer three parts that collar, metal collar and elastic material are made, plain washer is inner, back-up ring is placed in the middle, the outer axial arranged concentric of collar, and selected elastic material is oil resistant rubber.
7. the dust sealing assembly according to claim 1 or 3, it is characterized in that: the metal dust-proof cover of described outer rim bonding elastic material, elastic material is bonded on the part or all of surface that dust cover contacts with bearing outer ring seal groove, and bonded part may extend to bending that dust cover do not contact with seal groove on the surface.
8. dust sealing assembly according to claim 5, it is characterized in that: the metal collar of described outer rim bonding elastic material, elastic material be bonded in that back-up ring outer rim contacts with bearing outer ring seal groove and collar one is on all surfaces, and bonded part may extend on the top that back-up ring do not contact with collar with seal groove.
9. an anti-fluid is from the rolling bearing of outer ring sealing notch seepage, comprise bearing outer ring, inner ring, rolling element, retainer, fluid lubricant and dust sealing assembly, it is characterized in that, dust sealing assembly is the dust sealing assembly of anti-fluid according to claim 1 from outer ring sealing notch seepage, and this dust sealing assembly is by sealing the radial direction of notch or/and axial Interference contact is arranged on bearing outer ring with outer ring.
10. rolling bearing according to claim 9, it is characterized in that, the dust sealing assembly be installed on it is the monomer composite structure of claim 1,3,7 described in any one, dust cover is fixed in the seal groove of outer ring by the resiliently deformable of outer rim crimping, the elastic material folder lining of dust cover outer rim bonding, between dust cover and the faying surface of seal groove, forms elasticity Interference contact.
11. rolling bearings according to claim 9, it is characterized in that, the dust sealing assembly be installed on it is the composite structure of claim 1,2,4 described in any one, the plain washer that elastic material is made is inner, metal dust-proof cover is outer, dust cover is fixed in the seal groove of outer ring by the resiliently deformable of outer rim crimping, elastic material plain washer folder lining, between dust cover and the faying surface of seal groove, forms elasticity Interference contact.
12. rolling bearings according to claim 9, it is characterized in that, the dust sealing assembly be installed on it is the composite structure of claim 1,2,5,8 described in any one, the metal collar of outer edge bonding elastic material is inner, collar is outer, both are fixed in the seal groove of outer ring by the resiliently deformable of collar, and elastic material folder serves as a contrast at back-up ring and seal groove, between ring washer and the faying surface of collar, forms elasticity Interference contact.
13. rolling bearings according to claim 9, it is characterized in that, the dust sealing assembly be installed on it is the composite structure of claim 1,2,6 described in any one, the plain washer that elastic material is made is inner, collar is outer, back-up ring is placed in the middle, three is fixed in the seal groove of outer ring by the resiliently deformable of collar, elastic material folder lining, between back-up ring and the faying surface of seal groove, forms elasticity Interference contact.
14. as any one rolling bearing in claim 10 to 13, and it is characterized in that, selected elastic material is oil resistant rubber, is bondd by sulfuration process.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610002646.2A CN105465186A (en) | 2016-01-06 | 2016-01-06 | Dust-prevention sealing component and bearing for preventing fluid from leaking through outer-circle sealing groove opening |
| PCT/CN2016/111105 WO2017118278A1 (en) | 2016-01-06 | 2016-12-20 | Dust-prevention seal assembly for preventing fluid from leaking from seal groove opening of outer ring, and bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610002646.2A CN105465186A (en) | 2016-01-06 | 2016-01-06 | Dust-prevention sealing component and bearing for preventing fluid from leaking through outer-circle sealing groove opening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105465186A true CN105465186A (en) | 2016-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610002646.2A Pending CN105465186A (en) | 2016-01-06 | 2016-01-06 | Dust-prevention sealing component and bearing for preventing fluid from leaking through outer-circle sealing groove opening |
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| Country | Link |
|---|---|
| CN (1) | CN105465186A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017118278A1 (en) * | 2016-01-06 | 2017-07-13 | 上海斐赛轴承科技有限公司 | Dust-prevention seal assembly for preventing fluid from leaking from seal groove opening of outer ring, and bearing |
| CN110454498A (en) * | 2019-07-31 | 2019-11-15 | 无锡诚石轴承有限公司 | A kind of micro-wave oven heat dissipation circulation bearing |
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| CN2382888Y (en) * | 1998-08-10 | 2000-06-14 | 李向明 | Bearing dust-proof seal ring |
| CN2611670Y (en) * | 2003-03-27 | 2004-04-14 | 洛阳轴研科技股份有限公司 | High speed detachable sealed angle contact ball bearing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017118278A1 (en) * | 2016-01-06 | 2017-07-13 | 上海斐赛轴承科技有限公司 | Dust-prevention seal assembly for preventing fluid from leaking from seal groove opening of outer ring, and bearing |
| CN110454498A (en) * | 2019-07-31 | 2019-11-15 | 无锡诚石轴承有限公司 | A kind of micro-wave oven heat dissipation circulation bearing |
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