CN107387570A - Cartridge seal device and the bearing for including the cartridge seal device - Google Patents
Cartridge seal device and the bearing for including the cartridge seal device Download PDFInfo
- Publication number
- CN107387570A CN107387570A CN201610323391.XA CN201610323391A CN107387570A CN 107387570 A CN107387570 A CN 107387570A CN 201610323391 A CN201610323391 A CN 201610323391A CN 107387570 A CN107387570 A CN 107387570A
- Authority
- CN
- China
- Prior art keywords
- seal device
- cartridge seal
- lip
- cover plate
- pumping groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
- F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
- F16J15/3256—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals
- F16J15/3264—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals the elements being separable from each other
-
- 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
-
- 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
- F16C33/7869—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward
- F16C33/7879—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a further sealing ring
- F16C33/7883—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a further sealing ring mounted to the inner race and of generally L-shape, the two sealing rings defining a sealing with box-shaped cross-section
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3208—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip provided with tension elements, e.g. elastic rings
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Sealing Of Bearings (AREA)
Abstract
The present invention provides a kind of cartridge seal device and includes the bearing of the cartridge seal device.The cartridge seal device includes：The skeleton and cover plate being oppositely arranged；And then in the skeleton and/or multiple sealing lips of the cover plate, wherein, the cartridge seal device can be by pump section of the foreign matter pump from the cartridge seal device when being additionally included in rotation.The invention provides a kind of outstanding cartridge seal device of sealing effectiveness, and by the setting of pump section, the cartridge seal device can for a long time be immersed in muddy water and keep sealing effectiveness at high speeds.
Description
Technical field
The present invention relates to Sealing Technology, more particularly to a kind of cartridge seal technology.
Background technology
Fig. 1 is shown according to a kind of the schematic of cartridge seal device for hub bearing of prior art
Sectional view.The sealing device includes skeleton 100 and cover plate 200.Skeleton 100 is fixed on the outer ring 300 of bearing,
Cover plate 200 is fixed on the inner ring 400 of bearing, so as to which cover plate 200 can rotate relative to skeleton 100.In bone
Formed with primary seal lip 110 and two secondary sealing lips 120,130 on frame 100.Primary seal lip 110 is by spring
140 press and compress cover plate 200.Secondary sealing lip 120 contacts with the wall radially extended of cover plate 200.It is secondary
Sealing lip 130 contacts with the inner ring 400 of bearing.Fat can be sealed in inside (in Fig. 1 by the sealing device
Left side), while by muddy water etc. be maintained at outside (right side in Fig. 1).
Be traditionally used for the cartridge seal device of hub bearing easily can spray pollution examination by muddy water
Test.But to the requirement more and more higher of this cartridge seal device, sealing device must for a long time and
Pass through muddy water immersion test under conditions of high speed.Being traditionally used for the sealing device of hub bearing can not expire
This requirement of foot.
The content of the invention
The problem of can not meeting higher and higher sealing requirements in view of the sealing device of prior art and
Make the present invention.
The present invention can use but be not limited to following proposal.
A kind of cartridge seal device, it includes：The skeleton and cover plate being oppositely arranged；And then in described
Multiple sealing lips of skeleton and/or the cover plate, wherein,
The cartridge seal device can be by foreign matter pump from the cartridge seal device when being additionally included in rotation
Pump section.
Preferably, the pump section is formed from the cover plate or is formed at the material adhered on the cover plate
Pumping groove formed.
Preferably, direction of the circumferential width of the pumping groove along pumping groove pumping foreign matter gradually increases
Greatly.
Preferably, the pumping groove be for it is axially external pumping foreign matter axial pumping groove.
Preferably, the pumping groove includes bottom wall and the first side wall, second sidewall, the 3rd side wall, described
The first side wall and the second sidewall are relative to each other, the 3rd side wall and the surrounding wall portion split-phase of the skeleton
Right, the plane where the 3rd side wall does not intersect with the inner peripheral portion.
Preferably, the pumping groove is the radial direction pumping groove for pumping foreign matter to radial outside.
Preferably, the section in the direction along its pumping foreign matter of the pumping groove is in generally u-shaped or V-type.
Preferably, the direction of the pumping groove pumping foreign matter and the rotation axis of the cartridge seal device are in
Angle less than 90 degree, and the pumping groove realizes the pumping effect on single direction of rotation.
Preferably, the pumping groove includes bottom wall and the first side wall, second sidewall, the 3rd side wall, described
The first side wall and the second sidewall are relative to each other, and the first side wall and the second sidewall are asymmetric
Set.
Preferably, the cartridge seal device also includes the first centrifugation lip,
It is described first centrifugation lip on the rotation axis direction of the cartridge seal device with the pump section
Relatively, or the first centrifugation lip is arranged on the radially inner side of the pump section,
Annular groove is formed between the described first centrifugation lip and the pump section.
Preferably, the cover plate includes：For being fixed on the first inner peripheral portion of rotor；From described
The axially external end of one inner peripheral portion is to the radially extending wall part of radial outside；And from the radial wall
The second inner peripheral portion that partial radial outside end extends to axially inner side,
The cartridge seal device also includes：From the axially inner side end of second inner peripheral portion to the bone
Second centrifugation lip of the radial wall portion extension of frame；From the radial wall portion of the skeleton to the lid
The primary seal lip of the first inner peripheral portion extension of plate；And from the primary seal lip to the radial direction of the cover plate
3rd centrifugation lip of wall part extension.
Preferably, the annular space that the cartridge seal device is used between seal shaft and shell, the bone
Frame is used to be fixed on the shell, and the cover plate is used to be fixed on the axle, and the pump section is formed at institute
State the radial outer end of cover plate.
A kind of bearing, it includes inner ring, outer ring and rolling element, wherein, the bearing also includes as above institute
The cartridge seal device stated, the cover plate are fixed on the inner ring of the bearing, and the skeleton is fixed on described
The outer ring of bearing.
The invention provides a kind of outstanding cartridge seal device of sealing effectiveness, the cartridge seal device includes
Pump section, pump section can rotate when by foreign matter pump from the cartridge seal device.For example, by the box
In the case that formula sealing device is used for hub bearing, muddy water can be immersed in for a long time at high speeds
In and keep sealing effectiveness.The present invention also provides a kind of bearing for including the cartridge seal device.
Brief description of the drawings
Fig. 1 is shown according to a kind of the schematic of cartridge seal device for hub bearing of prior art
Sectional view.
Fig. 2 is the schematic cross-section for showing cartridge seal device according to the first embodiment of the invention.
Fig. 3 A are the cover plates for the cartridge seal device for showing the first embodiment, then on the cover plate
The schematic diagram of the structure of sealing lip and pump section.
Fig. 3 B are Fig. 3 A partial enlarged drawings.
Fig. 4 is the schematic cross-section for showing cartridge seal device second embodiment of the invention.
Fig. 5 is the cover plate for the cartridge seal device for showing the second embodiment, then on the cover plate
The schematic diagram of the structure of sealing lip and pump section.
Fig. 6 A and 6B are the schematic diagrames for the pumping groove for illustrating the cartridge seal device of the present invention.
Fig. 7 to 9 is some schematic diagrames for the pumping groove for showing the cartridge seal device of the present invention.
Description of reference numerals
The primary seal lip 120 of 100 skeleton 110, the cover plate of 130 secondary sealing lip, 140 spring 200
The inner ring of the bearing of outer ring 400 of 300 bearings
The radial wall portion 2 of 1 skeleton, 11 inner peripheral portion 12 centrifugation lip (the first centrifugation lip)
23 annular grooves 3 centrifugation lip (the second centrifugation lip) 9 centrifugation lips (the 3rd centrifugation lip) 6 are non-to be connect
Touch the radial wall portion of 4 spring of lip, 5 primary seal lip, 7 71 first inner peripheral portion of cover plate 72
The pump section of 73 second inner peripheral portion, 74 inclined wall part 8
The side wall of 81 pumping groove, 810 bottom wall, 811 the first side wall, 812 second sidewall 813 the 3rd
The radial wall portion 22 of 212 first radial wall portion 213 second centrifugation lip (the first centrifugation lip)
The annular groove of 272 first 275 second radial wall portion of radial wall portion, 28 pump section 223
The second sidewall 2,813 of 281 pumping groove, 2810 bottom wall, 2811 the first side wall 2812
Three side walls
The pumping groove of T bottom wall X second sidewall Y the first side walls 381,481,581
Embodiment
The embodiment of the present invention is described with reference to the accompanying drawings.
First embodiment
Reference picture 2,3A and 3B, first embodiment of the invention provide a kind of cartridge seal device, its
More specifically there is the cartridge seal device of pump function.
It should be appreciated that the section shown in Fig. 2 is through the section of the rotation axis of the cartridge seal device
Half, therefore, whole cartridge seal device is in substantially annulus/cylindrical shape.The radial wall portion 12 of skeleton 1
Side (left side in Fig. 2) is to be referred to as axially inner side by sealed sides, thus by the side, by the radial direction of cover plate 7
The side of wall part 72 is referred to as axially external.
The cartridge seal device includes skeleton 1, cover plate 7 and then in multiple sealing of skeleton 1 and cover plate 7
Lip.More specifically, these sealing lips include centrifugation lip 2, centrifugation lip 3, primary seal lip 5, non-contact close
Seal lip 6 and centrifugation lip 9.Skeleton 1 can be fixed on unshowned shell, and cover plate 7, which can be fixed on, not to be shown
On the axle gone out, so as to be produced relative rotation between skeleton 1 and cover plate 7.Therefore, the cartridge seal device
Can be with the annular space between seal shaft and shell.Preferably, the cartridge seal device can be used for bearing.
Bearing typically comprises inner ring, outer ring and rolling element.Skeleton 1 can be fixed on the outer ring of bearing, cover plate 7
The inner ring of bearing can be fixed on.
Skeleton 1 has the axial cross section of generally L-shaped, i.e. skeleton 1 includes：Around the rotation of sealing device
Axis (that is, the rotation axis of cover plate 7) surrounds the inner peripheral portion 11 of tubular, and the inner peripheral portion 11 is used for
It is fixed on the outer ring of unshowned shell or bearing；And from the axially inner side end of inner peripheral portion 11 to radially
The radially extending wall part 12 in inner side.Cover plate 7 has slightly complicated axial cross section shape, i.e. cover plate 7 wraps
Include：The first inner peripheral portion 71 of tubular, first inner peripheral portion are surrounded around the rotation axis of sealing device
71 inner ring for being fixed on unshowned axle or bearing；From the axially external end of the first inner peripheral portion 71 to
The radially extending wall part 72 of radial outside；Prolong from the radial outside end of radial wall portion 72 to axially inner side
The second inner peripheral portion 73 stretched；And from the axially inner side end of the second inner peripheral portion 73 to axially external and footpath
The inclined wall part 74 of extension is tilted laterally.
Lip 2 is centrifuged then in the inclined wall part 74 of cover plate 7, and extends into and makes from the inclined wall part 74
：The centrifugation lip 2 more goes more to lean on radial outside to axially external.Lip 2 is centrifuged as the surrounding wall portion with skeleton 1
Divide the 11 non-contact seals lips for being spaced apart small―gap sutures.Pump section 8 is also formed with the inclined wall part 74.
In this specific embodiment, the pump section 8 is axial direction, unidirectional pump section.In centrifugation lip 2 and pump section
Annular groove 23 is formed between 8.Centrifugation lip 2 can keep muddy water not enter sealing device in short time, in mud
In the case of the annular groove 23 that water enters between centrifugation lip 2 and pump section 8, pump section 8 can be by muddy water pump
From sealing device, so that muddy water is away from sealing device.
Reference picture 3A and 3B, pump section 8 include being formed at the inclined wall part 74, circumferentially of skeleton 7
The multiple pumping grooves 81 spread.Here, pumping groove 81 can be formed directly into the material of cover plate 7.But
It is, it is preferable that pumping groove 81 is formed in the material of the rubber for being attached to cover plate 7 etc..More preferably
Ground, pumping groove 81 are formed from the same material with centrifugation lip 2, centrifugation lip 3 in same forming step.So
Pumping groove 81 can be readily formed, and reduces the number of procedure of processing.
Here, pumping groove 81 is the groove for being formed at inclined wall part 74 or the material adhered to thereon.This is recessed
Groove is by bottom wall 810, the first side wall 811 relative to each other, second sidewall 812, and the structure of the 3rd side wall 813
Into.Wherein, the first side wall 811 is relative to the radial direction through the first side wall 811 and the intersection of bottom wall 810
First angle of plane is with second sidewall 812 relative to the intersection through the second sidewall 812 and bottom wall 810
Sagittal plane the second corner dimension it is different, in other words, the first side wall 811 and second sidewall 812 are not
Specular, so that the pumping groove 81 has directionality.More specifically, the phase of the first side wall 811
For prolonging through the sagittal plane of the first side wall 811 and the intersection of bottom wall 810 away from the ground of second sidewall 812
Stretch.The arrow P for the rotation direction for representing cover plate 7 is shown in Fig. 3 B.Thus, present embodiment is for lid
The situation that the axle or the inner ring of bearing that plate 7 is installed to rotate in one direction in one direction or mainly is outstanding
Its is effective.3rd side wall 813 is relative with the inner peripheral portion 11 of skeleton 1, flat where the 3rd side wall 813
Face and inner peripheral portion 11 are non-intersect, so as to ensure that the muddy water for entering pumping groove 81 can be along the 3rd side
Wall 813 (and the first side wall 811) is pumped away from sealing device, it is, the muddy water being pumped away from will not be got to
The inner peripheral portion 11 of skeleton 1 and rebound.The circumferential width of the radially inner side (i.e. bottom wall 810) of pumping groove 81
Less than the circumferential width of the radial outside (i.e. open side) of pumping groove 81.In other words, the week of pumping groove 81
The direction (axially and/or radially outside) of foreign matter is pumped by relatively increase to width along it.
Lip 3 is centrifuged from the axially inner side end of the second inner peripheral portion 73 of cover plate 7, the i.e. and of the second inner peripheral portion 73
Coupling part between inclined wall part 74 tilts extension towards the radial wall portion 12 of skeleton 1.Centrifuge lip 3
It is designed to contact sealing lip.Centrifugation lip 3 has long and thin structure, thus its radial wall with skeleton 1
There is larger interference but less contact force between part 12.Centrifugation lip 3 can also be protected muddy water the short time
Sealing device will be departed from outside, muddy water due to centrifugal force by holding.Because centrifugation lip 3 then arrives what is rotated
Cover plate 7, so centrifugal effect is strong.It should be noted that the centrifugation lip 3 and skeleton illustrated in Fig. 2 and Fig. 4
1 radial wall portion 12 partly overlaps, and primary seal lip 5 and the first inner peripheral portion 71 of cover plate 7 partly overlap,
This be merely represented under true assembled state centrifuge lip 3 and radial wall portion 12 it is in sealing contact/closely against main
The inner peripheral portion of sealing lip 5 and first is 71 in sealing contact/closely against, and do not indicate that centrifugation lip 3 and really enter
In the material of radial wall portion 12, primary seal lip 5 is really entered in the material of the first inner peripheral portion 71.
Primary seal lip 5 tilts from the first inner peripheral portion 71 of radial wall portion 12 towards the cover plate 7 of skeleton 1 prolongs
Stretch and contacted with the first inner peripheral portion 71.Spring 4 is extension spring and is pressed to primary seal lip 5 first week
Wall part 71.Centrifugation lip 9 is connected to primary seal lip 5 and the radial wall portion 72 towards cover plate 7 tilts extension.
Centrifuging lip 9 has the function similar to centrifugation lip 3, but it is non-contact seals lip to centrifuge lip 9.Primary seal
Lip 5 forms another road defence line after lip 9 is centrifuged.
Non-contact lip 6 extends from the radial wall portion 12 of skeleton 1 towards unshowned axle or bearing inner race.It is non-
Contact lip 6 will form small―gap suture with being not shown between axle or bearing inner race, for fat to be sealed in into internal (figure
Left side in 2).
It should be appreciated that although the pump section or pumping groove in present embodiment are axial pump section or pumping
Groove.But pump section or the pumping direction of pumping groove and/or bearing of trend and/or the inclination of the 3rd side wall
The bearing of trend of wall part 74 should be in be less than with the direction (axial direction) of the rotation axis of cartridge seal device
90 degree of angle.
Second embodiment
With reference to Figure 4 and 5, second embodiment of the present invention is a kind of cartridge seal device, and it is more specifically
It is the cartridge seal device with pump function.
Same or analogous accompanying drawing is marked for part same or analogous with first embodiment or part
Mark, and omit to these parts or partial detailed description.
Centrifugation lip 3, primary seal lip 5, non-contact seals in the cartridge seal device of second embodiment
Lip 6, centrifugation lip 9 and spring 4 are identical with first embodiment, do not illustrate herein.Second
Skeleton 1, cover plate 7 and centrifugation lip 22 and pump section 28 and first in the cartridge seal device of embodiment
It is different in embodiment.The difference of second embodiment and first embodiment is mainly explained below
Place.
In this second embodiment, skeleton 1 includes：Rotation axis around sealing device surrounds tubular
Inner peripheral portion 11；The first radial wall extended from the axially inner side end of inner peripheral portion 11 to radially inner side
Divide 212；And the second radial wall portion extended from the axially external end of inner peripheral portion 11 to radial outside
213.Cover plate 7 includes：The first inner peripheral portion 71 of tubular is surrounded around the rotation axis of sealing device；From
The first radial wall portion 272 that the axially external end of first inner peripheral portion 71 extends to radial outside；From
The second inner peripheral portion 73 that the radial outside end of one radial wall portion 272 extends to axially inner side；From second
The axially inner side end of inner peripheral portion 73 tilts the inclined wall part 74 of extension to axially external and radial outside；
And the second radial wall portion 275 extended from the radial outside end of inclined wall part 74 to radial outside.
Second radial wall portion 213 of skeleton 1 and the second radial wall portion 275 of cover plate 7 are relatively and with substantially
Identical radial height.It should be appreciated that the second radial wall portion 213 of skeleton 1 and the second footpath of cover plate 7
Need not strictly it be radially extended to wall part 275, they can also be with radially angularly prolonging
Stretch.
In this embodiment, the second radial wall portion 213 of skeleton 1 and the second radial wall of cover plate 7
Divide and form small―gap suture between 275 or pump section 28, the small―gap suture can prevent foreign matter from entering sealing device simultaneously
It ensure that the function of pump section 28.
Further, since the thickness of the second radial wall portion 213 of skeleton 1 can be less than other portions of skeleton 1
Point, i.e. the first radial wall portion 212 and the thickness of inner peripheral portion 11, thus material usage can be reduced.
Lip 22 is centrifuged then in the inclined wall part 74 of cover plate 7, and is extended into from the inclined wall part 74
So that：Centrifugation lip 22 more goes more to lean on radial outside to axially external.In the second radial wall portion of cover plate 7
Formed with pump section 28 on 275.In this specific embodiment, the pump section 28 is radial direction, two-way pump
Send portion.Compared with first embodiment, the centrifugation lip 22 shows slightly than the centrifugation lip 2 in first embodiment
It is elongated.Annular groove 223 is formed between centrifugation lip 22 and pump section 28.Centrifuging lip 22 can be in short time
Muddy water is kept not enter sealing device, in the annular groove that muddy water enters between centrifugation lip 22 and pump section 28
In the case of 223, pump section 28 can be by muddy water pump from sealing device, so that muddy water is away from sealing device.
Reference picture 5, pump section 28 include being formed at the second radial wall portion 275, circumferentially of skeleton 7
The multiple pumping grooves 281 spread.Here, pumping groove 281 can be formed directly into the material of cover plate 7.
It is, however, preferable that pumping groove 281 is formed in the material of the rubber for being attached to cover plate 7 etc..It is more excellent
Selection of land, pumping groove 281 are formed from the same material with centrifugation lip 22, centrifugation lip 3 in same forming step.
Here, pumping groove 281 is be formed at the second radial wall portion 275 or the material adhered to thereon recessed
Groove.The groove is by bottom wall 2810, the first side wall 2811 relative to each other, second sidewall 2812, Yi Ji
Three side walls 2813 are formed.Pumping groove 281 has relative to a sagittal plane pair for dividing the pumping groove 281 equally
The shape of title, it is, the first side wall 2811 relative to each other, second sidewall 2812 mirror relative to each other
As symmetrical.Thus the pumping groove 281 is two-way pumping groove.So, present embodiment is installed for cover plate 7
To axle or the inner ring of bearing can be particularly effective along the situation of positive and negative Double-directional rotary.3rd side wall 2813 and bone
Second radial wall portion 213 of frame 1 is relative and almost parallel.
Reference picture 6A and 6B further illustrate the pumping groove of the cartridge seal device of the present invention.Fig. 6 A and 6B
For from Fig. 4,5 pumping groove left sides, i.e. from the axially inner side of cartridge seal device
Schematic diagram.The pumping groove includes bottom wall T, the first side wall Y, second sidewall X and the 3rd side wall (figure
Do not indicated in 6A, 6B).The outer peripheral edge E of pumping groove is also show in Fig. 6 A, outer peripheral edge E corresponds to
The outer peripheral edge of cover plate 7.Point O in Fig. 6 A shows the outer peripheral edge E center of circle, and it is also cartridge seal simultaneously
Point on the rotation axis of device.In Fig. 6 A Y0 represent by the first side wall Y and bottom wall T it is intersection point,
Along the straight line of outer peripheral edge E radial direction, the X0 in Fig. 6 A represents the friendship by second sidewall X and bottom wall T
The straight line of radial direction put, along outer peripheral edge E.Preferably, the first side wall Y and/or second sidewall X ratios
More expanded along the straight line Y0 and/or X0 of the radial direction of outer peripheral edge, it is, angle a and/or angle b are located at
The outside in the space between X0 and Y0, this is advantageous to the foreign matters such as muddy water and is smoothly discharged out pump by centrifugal force
Send groove.In the specific example, the first side wall Y and second sidewall X angle is more than straight line Y0 and straight
Angle between line X0.
The pumping theory of the pumping groove of the present invention is further illustrated referring to Fig. 4,5 and 6B.It is close in boxlike
In the actual use of seal apparatus, such as the foreign matter such as muddy water is possibly into the second radial wall portion to skeleton 1
Between 213 and the second radial wall portion 275 of cover plate 7, now, foreign matter is easily caught by pumping groove 281.
When cover plate 7 rotates and (for example, in terms of Fig. 4,5 left side, is rotated in a clockwise direction), pumping groove
The first side wall Y (2811) push foreign matter, foreign matter is left pumping groove under the influence of centrifugal force.With
Exemplified by Fig. 6 B, on the first side wall Y and bottom wall T point of intersection, foreign matter is applied by the first side wall Y, edge
The thrust in point of intersection bottom wall T tangent line Q direction, therefore, the movement under force direction of foreign matter is with being somebody's turn to do
The rotary motion trace (bottom wall T) of intersection point is different, and foreign matter can move along the first side wall Y-direction radial outside.
Compared with straight line Y0, more gone to radial outside, the rear side that the first side wall Y is more leaned in rotation direction, therefore,
The first side wall Y is more conducive to foreign matter and moves away pumping groove.
In above-mentioned Fig. 6 A, angle a and angle b can be with identical or different.And it is possible to suitably set
The number of the pumping groove set in cover plate 7.Fig. 7 to 9 shows that some of two-way pumping groove of the present invention are shown
Example.The section in the direction along its pumping foreign matter of pumping groove 381 is generally u-shaped.The edge of pumping groove 481
It is V-type it and pump the section in the direction of foreign matter.Pumping groove 581 pumps cutting for the direction of foreign matter along it
Face is generally u-shaped.In fig.9, two side walls relative to each other of pumping groove 581 are not symmetrical to answer
Work as understanding, the pumping groove 581 can be equally used for two-way pumping.
It should be appreciated that structure, the action principle of the pumping groove of the invention illustrated above in several paragraphs
The pumping groove of the cartridge seal device of first embodiment can be suitably applied to.
In the said structure of the present invention, pump section can be by muddy water pump from sealing device.It is meanwhile multiple
Sealing lip and skeleton, cover plate form labyrinth structure, further improve sealing effectiveness.Only centrifuge the He of lip 3
Primary seal lip 5 is contact seal lip, to reduce friction torque.
Thus, it is low the invention provides a kind of compact-sized, friction torque and outstanding sealing effectiveness close
Seal apparatus, it can for a long time be immersed in muddy water and keep sealing effectiveness at high speeds.This is close
Seal apparatus can be particularly applied to hub bearing.
The invention is not restricted to above-mentioned embodiment, those skilled in the art can be right under the teachings of the present invention
Above-mentioned embodiment is variously modified and modification, without departing from the scope of the present invention.
(1) illustratively and without limitation, each sealing lip and pump section can be by elastomeric material systems
Into.Particularly pump section can be made up of other suitable materials.
(2) size of pumping groove of the invention can specifically be set according to its application.Illustratively,
And without limitation, the thickness (size on the direction of the 3rd side wall) of pumping groove can be
0.5mm to 5mm；The depth (size on the direction of bottom wall) of pumping groove can be for 1mm extremely
10mm。
Claims (13)
1. a kind of cartridge seal device, it includes：The skeleton and cover plate being oppositely arranged；And then in
Multiple sealing lips of the skeleton and/or the cover plate, it is characterised in that
The cartridge seal device can be by foreign matter pump from the cartridge seal device when being additionally included in rotation
Pump section.
2. cartridge seal device according to claim 1, it is characterised in that the pump section is by shape
Cover plate described in Cheng Yu is formed at the pumping groove of the material adhered on the cover plate and formed.
3. cartridge seal device according to claim 2, it is characterised in that the week of the pumping groove
The direction that foreign matter is pumped to width along the pumping groove gradually increases.
4. the cartridge seal device according to Claims 2 or 3, it is characterised in that the pumping groove
For for it is axially external pumping foreign matter axial pumping groove.
5. cartridge seal device according to claim 4, it is characterised in that the pumping groove includes
Bottom wall and the first side wall, second sidewall, the 3rd side wall, the first side wall and the second sidewall are each other
Relatively, the 3rd side wall is relative with the inner peripheral portion of the skeleton, the plane where the 3rd side wall
Do not intersect with the inner peripheral portion.
6. the cartridge seal device according to Claims 2 or 3, it is characterised in that the pumping groove
For the radial direction pumping groove for pumping foreign matter to radial outside.
7. the cartridge seal device according to Claims 2 or 3, it is characterised in that the pumping groove
To pump the section in direction of foreign matter along it be in generally u-shaped or V-type.
8. the cartridge seal device according to Claims 2 or 3, it is characterised in that the pumping groove
The direction of pumping foreign matter and the angle that the rotation axis of the cartridge seal device is in less than 90 degree, and institute
State pumping groove and realize pumping effect on single direction of rotation.
9. the cartridge seal device according to Claims 2 or 3, it is characterised in that the pumping groove
Including bottom wall and the first side wall, second sidewall, the 3rd side wall, the first side wall and the second sidewall
Toward each other, the first side wall and the second sidewall are non-symmetrically arranged.
10. cartridge seal device according to any one of claim 1 to 3, it is characterised in that institute
Stating cartridge seal device also includes the first centrifugation lip,
It is described first centrifugation lip on the rotation axis direction of the cartridge seal device with the pump section
Relatively, or the first centrifugation lip is arranged on the radially inner side of the pump section,
Annular groove is formed between the described first centrifugation lip and the pump section.
11. cartridge seal device according to any one of claim 1 to 3, it is characterised in that institute
Stating cover plate includes：For being fixed on the first inner peripheral portion of rotor；From the axle of first inner peripheral portion
Outside side is to the radially extending wall part of radial outside；And the radial outside from the radial wall portion
The second inner peripheral portion extended to axially inner side is held,
The cartridge seal device also includes：From the axially inner side end of second inner peripheral portion to the bone
Second centrifugation lip of the radial wall portion extension of frame；From the radial wall portion of the skeleton to the lid
The primary seal lip of the first inner peripheral portion extension of plate；And from the primary seal lip to the radial direction of the cover plate
3rd centrifugation lip of wall part extension.
12. cartridge seal device according to any one of claim 1 to 3, it is characterised in that institute
The annular space that cartridge seal device is used between seal shaft and shell is stated, the skeleton is used to be fixed on institute
Shell is stated, the cover plate is used to be fixed on the axle, and the footpath that the pump section is formed at the cover plate is outside
End.
13. a kind of bearing, it includes inner ring, outer ring and rolling element, it is characterised in that the bearing is also
Including the cartridge seal device any one of claim 1-11, the cover plate is fixed on the bearing
Inner ring, the skeleton is fixed on the outer ring of the bearing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610323391.XA CN107387570A (en) | 2016-05-16 | 2016-05-16 | Cartridge seal device and the bearing for including the cartridge seal device |
| DE102017110087.3A DE102017110087B4 (en) | 2016-05-16 | 2017-05-10 | A cassette sealing device and a bearing with such a cassette sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610323391.XA CN107387570A (en) | 2016-05-16 | 2016-05-16 | Cartridge seal device and the bearing for including the cartridge seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107387570A true CN107387570A (en) | 2017-11-24 |
Family
ID=60163637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610323391.XA Pending CN107387570A (en) | 2016-05-16 | 2016-05-16 | Cartridge seal device and the bearing for including the cartridge seal device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107387570A (en) |
| DE (1) | DE102017110087B4 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108374881A (en) * | 2018-02-05 | 2018-08-07 | 江门市鑫辉密封科技有限公司 | A kind of resistance to large eccentricity of gearbox and the shaft seal assembly of low friction resistance |
| CN109244998A (en) * | 2018-08-20 | 2019-01-18 | 国网江苏省电力公司盐城供电公司 | A kind of cable seal circle of for transformer power distribution cabinet |
| CN109253259A (en) * | 2018-10-23 | 2019-01-22 | 舍弗勒技术股份两合公司 | sealing device and bearing |
| CN111656033A (en) * | 2018-02-13 | 2020-09-11 | 舍弗勒技术股份两合公司 | Wheel bearing arrangement having a rotational axis |
| CN111828486A (en) * | 2019-04-16 | 2020-10-27 | 斯凯孚公司 | Labyrinth seal for improved drainage |
| CN111895095A (en) * | 2019-05-06 | 2020-11-06 | 舍弗勒技术股份两合公司 | Seal assembly |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022000923B3 (en) | 2022-03-17 | 2023-09-14 | C&U Europe Holding GmbH | Bearing device for a vehicle with a sealing arrangement and vehicle with the bearing device |
| CN115325035B (en) * | 2022-08-09 | 2024-04-19 | 海宁市耐特陶塑轴承股份有限公司 | Precise zirconia ceramic bearing and processing technology thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108374881A (en) * | 2018-02-05 | 2018-08-07 | 江门市鑫辉密封科技有限公司 | A kind of resistance to large eccentricity of gearbox and the shaft seal assembly of low friction resistance |
| CN111656033A (en) * | 2018-02-13 | 2020-09-11 | 舍弗勒技术股份两合公司 | Wheel bearing arrangement having a rotational axis |
| CN109244998A (en) * | 2018-08-20 | 2019-01-18 | 国网江苏省电力公司盐城供电公司 | A kind of cable seal circle of for transformer power distribution cabinet |
| CN109253259A (en) * | 2018-10-23 | 2019-01-22 | 舍弗勒技术股份两合公司 | sealing device and bearing |
| CN111828486A (en) * | 2019-04-16 | 2020-10-27 | 斯凯孚公司 | Labyrinth seal for improved drainage |
| CN111895095A (en) * | 2019-05-06 | 2020-11-06 | 舍弗勒技术股份两合公司 | Seal assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102017110087B4 (en) | 2023-06-22 |
| DE102017110087A1 (en) | 2017-11-16 |
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Application publication date: 20171124 |