CN213541091U - Labyrinth sealing mechanism for shaft-connected bearing - Google Patents
Labyrinth sealing mechanism for shaft-connected bearing Download PDFInfo
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- CN213541091U CN213541091U CN202022469286.1U CN202022469286U CN213541091U CN 213541091 U CN213541091 U CN 213541091U CN 202022469286 U CN202022469286 U CN 202022469286U CN 213541091 U CN213541091 U CN 213541091U
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Abstract
The utility model discloses a labyrinth seal mechanism for axle coupling bearing, after the axle coupling bearing is assembled, the end of the bearing outer ring is provided with an outer ring seal groove, the opening of the outer ring seal groove faces the mandrel of the axle, a seal mechanism is arranged between the outer ring seal groove and the mandrel, the seal mechanism comprises an outer ring seal component and a mandrel seal component; the outer diameter of the outer ring sealing component is embedded in the outer ring sealing groove, and the inner diameter of the outer ring sealing component is in interference fit with the outer diameter of the mandrel; the mandrel sealing assembly is positioned on the inner side of the outer ring sealing assembly, the outer diameter of the mandrel sealing assembly is in dynamic sealing interference fit with the inner side of the outer diameter of the outer ring sealing assembly, and the inner side of the outer diameter of the outer ring sealing assembly and the outer diameter of the mandrel sealing assembly form a first sealing chamber; the inner diameter of the mandrel seal assembly is in interference fit with the outer diameter of the mandrel. The utility model discloses an outer lane seal assembly and dabber seal assembly cooperation have effectively improved sealed effect and sealed life-span.
Description
Technical Field
The utility model belongs to the technical field of mechanical equipment spare part, concretely relates to labyrinth sealing mechanism for axle is bearing even.
Background
In a shaft connecting bearing in mechanical equipment parts, a sealing device is needed to seal the shaft connecting bearing so as to prevent external pollutants from polluting the inside of the shaft connecting bearing, and the leakage of the external pollutants can influence the normal service life of the shaft connecting bearing and influence the service performance of the internal shaft connecting bearing; if the sealing effect is not good, the leakage of grease in the shaft coupling bearing can be caused, the abrasion of the shaft coupling bearing is increased, and the service life of the shaft coupling bearing is shortened. The prior shaft-connected bearing sealing scheme mainly achieves the sealing effect by static sealing at the outer ring part and dynamic sealing of a mandrel part; however, the mandrel is a rotating part, which inevitably causes abrasion to the sealing lip to reduce the sealing effect, or causes early leakage or external pollutant invasion due to poor installation concentricity of the shaft connecting bearing, thereby affecting the service performance of the internal shaft connecting bearing, and meanwhile, if a larger interference is adopted, the rotating torque of the bearing is obviously increased, thereby increasing the operation power consumption of equipment; therefore, the technical problems caused by the technical defects of the above shaft coupling bearing are urgently needed to be solved.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims to provide a labyrinth sealing mechanism for axle is bearing to prior art not enough.
Realize the technical scheme of the utility model is that:
the utility model relates to a labyrinth seal mechanism for axle coupling bearing, after the axle coupling bearing assembly, the end of bearing inner race is equipped with the outer lane seal groove, the opening of outer lane seal groove faces the dabber of axle, install sealing mechanism between outer lane seal groove and the dabber, sealing mechanism includes outer lane seal assembly and dabber seal assembly; the outer diameter of the outer ring sealing component is embedded in the outer ring sealing groove, and the inner diameter of the outer ring sealing component is in interference fit with the outer diameter of the mandrel; the mandrel sealing assembly is positioned on the inner side of the outer ring sealing assembly, the outer diameter of the mandrel sealing assembly is in dynamic sealing interference fit with the inner side of the outer diameter of the outer ring sealing assembly, and the inner side of the outer diameter of the outer ring sealing assembly and the outer diameter of the mandrel sealing assembly form a first sealing chamber; the inner diameter of the mandrel seal assembly is in interference fit with the outer diameter of the mandrel.
The utility model discloses a further preferred technical scheme is, outer lane seal assembly includes first skeleton and first sealed rubber ring; the cross section of the first framework comprises a notch sealing part, an axial bending part bent towards the axial outer side of the notch sealing part, and a radial bending part bent towards the radial inner side of the axial bending part; the first sealing rubber ring is wrapped at two ends and the outer surface of the first framework and comprises a first lip and a second lip; the first lip is positioned at the top of the notch sealing part and is in interference fit with the outer ring sealing groove; the second lip is located the bottom of radial bend portion, and it and the outside diameter interference fit of dabber.
Preferably, the mandrel seal comprises a second backbone and a second sealing rubber ring; the cross section of the second framework comprises a transverse bending part positioned at the outer diameter, a vertical bending part bent towards the radial inner side from the inner side of the transverse bending part, and an inner-diameter bending part bent towards the axial outer side from the vertical bending part; the second sealing rubber ring is wrapped on the outer surface of the transverse bending part of the second framework; the second sealing rubber ring comprises a third lip and a fourth lip, and the third lip is positioned on the obliquely inner side of the top of the transverse bending part and is in dynamic sealing interference fit with the axial bending part of the first framework; the fourth lip is positioned at the outer side end of the transverse bending part and is in dynamic sealing interference fit with the radial bending part of the first framework; the third lip, the fourth lip and the first framework form a first sealing chamber; and the fourth lip, the first framework, the fourth framework and the second lip form a second sealing cavity. The utility model discloses well outer lane seal assembly and dabber seal assembly combination form first sealed cavity and the sealed cavity of second, form buffer area and isolation effect to the slight seepage that produces in the course of the work, reduce the influence of seepage counter shaft and bearing work, improve the life of axle and bearing.
Preferably, a third sealing rubber ring is wrapped on the inner side of a bottom corner of the vertical bending part of the second framework, the third sealing rubber ring comprises a fifth lip, the fifth lip is positioned on the inner side of the bottom of the vertical bending part, and the inner diameter bending parts of the fifth lip and the second framework are in interference fit with the outer diameter of the mandrel; the second lip in the first sealing line can form the effective isolation to outside pollutant, and the sealed line of rethread second way and the sealed cavity of second are to outside light little seepage effectively keep apart and cushion, and inside grease can not only be kept apart to the third sealing rubber ring, can also keep apart outside seepage effectively, improves sealing mechanism to the sealing performance and the effect of the surface of dabber.
Preferably, the interference magnitude of the interference fit between the fifth lip and the inner diameter bending part of the second framework and the outer diameter of the mandrel is not less than 0.05mm, so that a static sealing state of the outer surface of the mandrel is formed. The utility model discloses the surface that makes the dabber forms quiet sealing state, can reduce sealing member's wearing and tearing, improves sealing member's life.
Preferably, the interference fit of the third lip and the first framework is a dynamic seal interference fit with interference magnitude not less than 0.05 mm; and the fourth lip and the radial bending part of the first framework of the outer ring sealing assembly form a gap dynamic seal with a gap not smaller than 0.1 mm.
Preferably, the maximum outer diameter of the first lip is in interference fit with the outer ring sealing groove with interference magnitude not less than 0.2mm, so that a static sealing state of a bearing outer ring joint surface is formed; and the second lip and the outer diameter of the mandrel form a dynamic sealing state with interference magnitude not less than 0.5 mm.
The utility model provides a sealing mechanism, at bearing during operation, the inside grease of bearing is pushed to the dabber seal assembly along with the dabber rotation owing to receiving the rolling element extrusion, the grease will be sealed completely inside sealing mechanism by the fifth lip on the third seal rubber ring among the dabber seal assembly, the influence that receives centrifugal force through partial grease removes to bearing inner race direction along dabber seal assembly's second skeleton, will be blockked by the third lip and make partial grease get back to lubrication area again, make the inside grease of bearing realize the circulation effect at the rotation in-process. The outer ring sealing component is in a static state along with the bearing outer ring, and a dynamic sealing surface formed by a second lip and the mandrel forms sealing protection on external pollutants; the first sealing chamber and the second sealing chamber formed by the outer ring sealing assembly and the mandrel sealing assembly form a buffering area and an isolation effect on slight leakage generated in the working process; the utility model discloses an to sealing mechanism's improvement, the sealed static seal state that all adopts with the dabber seal of bearing inner race, through forming the sealed cavity of first sealed cavity and second, effectively improve the sealed effect and the sealed life-span of shaft bearing, through reducing the requirement to the installation concentricity and reduce the early inefficacy that installation error arouses.
By adopting the technical scheme, the utility model discloses following beneficial effect has:
(1) the utility model discloses a set up outer lane seal assembly and dabber seal assembly between bearing inner race and dabber, wherein the external diameter and the outer lane seal groove interference fit of outer lane seal assembly seal the bearing inner race, the internal diameter of outer lane seal assembly and the external diameter interference fit of dabber seal the outer circumference of dabber, outer lane seal assembly can effectively keep apart the seepage that blocks external pollutant; the mandrel sealing component is a component matched with the outer ring sealing component, the outer diameter of the mandrel sealing component is in interference fit with the inner side of the outer diameter of the outer ring sealing component in a dynamic sealing manner, a first sealing cavity is formed by the mandrel sealing component and the outer diameter of the mandrel sealing component, and the inner diameter of the mandrel sealing component is in interference fit with the outer diameter of the mandrel to form a sealing state; the first sealed chamber forms buffer zone and isolation effect to the slight seepage that produces in the working process, and outer lane seal assembly and dabber seal assembly join in marriage and act on effectively improving sealed effect and sealed life-span, reduce the requirement to shaft coupling bearing installation concentricity simultaneously.
(2) The outer ring sealing component comprises a first sealing rubber ring and a first framework, and is in interference fit with an outer ring sealing groove through a first lip on the first sealing rubber ring, and is in interference fit with the outer diameter of a mandrel through a second lip; the cooperation of first sealing rubber ring and second skeleton can improve outer lane seal assembly's sealing performance, reduces the early inefficacy that installation error arouses, improves its life.
(3) The mandrel sealing component comprises a second sealing rubber ring and a second framework, and a first sealing cavity is formed by a third lip and a fourth lip of the second sealing rubber ring and the first framework; the fourth lip, the first framework, the fourth framework and the second lip form a second sealing chamber; the first sealing chamber and the second sealing chamber form a buffer area and an isolation effect for slight leakage generated in the working process, reduce the influence of leakage on the work of the shaft and the bearing, and prolong the service life of the shaft and the bearing.
(4) The bottom corner inner side of the vertical bending part of the second framework in the utility model is wrapped with a third sealing rubber ring, the third sealing rubber ring is provided with a fifth lip, and the fifth lip and the inner diameter bending part of the second framework are in interference fit with the outer diameter of the mandrel; the utility model discloses well second lip can form the effective isolation to the outside pollutant, and the radial portion of bending and the sealed cavity of second of rethread second skeleton carry out effective isolation and buffering to the light little seepage in outside, and inside grease can not only be kept apart to the third rubber sealing ring, makes the inside grease of bearing realize the circulation effect rotating the in-process, can also keep apart outside seepage effectively, improves sealing performance and the effect of sealing mechanism to the surface of dabber.
(5) The bearing outer ring seal and the mandrel seal in the utility model both adopt static seal states, and by forming two seal cavities, the design of the structure effectively improves the sealing effect and the effective sealing service life of the shaft-connected bearing, and simultaneously reduces the requirement on the installation concentricity; form Z style of calligraphy labyrinth space between two subassemblies, play the effect that the interior outer material of hysteresis bearing is shared, the lip installation back that sets up on the dabber seal assembly contacts with outer lane seal assembly, can form a plurality of buffer seal cavity chambers in Z style of calligraphy space, and the sealed cavity chamber can be effectively to the slight seepage formation buffer area that produces in the course of the work and keep apart the effect, further strengthens sealing mechanism's sealed effect.
Drawings
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings, in which:
fig. 1 is a schematic structural view of the sealing mechanism of the present invention;
fig. 2 is a schematic structural view of the outer ring sealing assembly of the present invention;
fig. 3 is a schematic structural view of the mandrel seal assembly of the present invention.
In the figure, 1-outer ring seal assembly, 11-first seal rubber ring, 111-first lip, 112-second lip, 12-first framework, 2-mandrel seal assembly, 21-second seal rubber ring, 211-third lip, 212-fourth lip, 22-third seal rubber ring, 23-second framework, 3-bearing outer ring, 4-outer ring seal groove, 5-mandrel, 6-first seal chamber, and 7-second seal chamber.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
Example (b): a labyrinth seal mechanism for a shaft coupling bearing, after the shaft coupling bearing is assembled, the end of a bearing outer ring 3 is provided with an outer ring seal groove 4, the opening of the outer ring seal groove 4 faces a mandrel 5 of a shaft, and a seal mechanism is arranged between the outer ring seal groove 4 and the mandrel 5, as shown in figure 1, the seal mechanism comprises an outer ring seal component 1 and a mandrel seal component 2; the outer diameter of the outer ring sealing component 1 is embedded in the outer ring sealing groove 4, and the inner diameter of the outer ring sealing component is in interference fit with the outer diameter of the mandrel 5; the mandrel seal assembly 2 is positioned on the inner side of the outer ring seal assembly 1, the outer diameter of the mandrel seal assembly 2 is in dynamic seal interference fit with the inner side of the outer diameter of the outer ring seal assembly 1, and the inner side of the outer diameter of the outer ring seal assembly 1 and the outer diameter of the mandrel seal assembly 2 form a first seal chamber 6; the inner diameter of the mandrel seal assembly 2 is an interference fit with the outer diameter of the mandrel 5.
As shown in fig. 2, the outer ring seal assembly 1 in the present embodiment includes a first frame 12 and a first seal rubber ring 11; the cross section of the first framework 12 comprises a notch sealing part, an axial bending part which is bent towards the axial outer side of the notch sealing part, and a radial bending part which is bent towards the radial inner side of the axial bending part; the first sealing rubber ring 11 is wrapped on two ends and the outer surface of the first framework 12, and the first sealing rubber ring 11 comprises a first lip 111 and a second lip 112; the first lip 111 is positioned at the top of the notch sealing part and is in interference fit with the outer ring sealing groove 4, the maximum outer diameter of the first lip 111 and the outer ring sealing groove are in interference fit with the interference magnitude of not less than 0.2mm, and a static sealing state of a bearing outer ring joint surface is formed; the second lip 112 is positioned at the bottom of the radial bending part and is in interference fit with the outer diameter of the mandrel 5, and the second lip 112 and the outer diameter of the mandrel 5 form a dynamic sealing state with the interference magnitude not less than 0.5 mm; in this embodiment, the first lip is in interference fit with the outer ring sealing groove, so that the bearing outer ring forms a sealing structure, and the second lip 112 is in interference fit with the outer diameter of the mandrel 5, so that a sealing structure is formed on the outer surface of the mandrel 5, and external pollutants are prevented from being infected.
As shown in fig. 3, the mandrel seal assembly 2 in the present embodiment includes a second frame 23 and a second seal rubber ring 21; the cross section of the second framework 23 comprises a transverse bending part positioned at the outer diameter, a vertical bending part bent towards the radial inner side from the inner side of the transverse bending part, and an inner diameter bending part bent towards the axial outer side from the vertical bending part; the second sealing rubber ring 21 is wrapped on the outer surface of the transverse bending part of the second framework 23; the second sealing rubber ring 21 comprises a third lip 211 and a fourth lip 212, the third lip 211 is positioned on the top of the transverse bending part and is obliquely and internally in interference fit with the axial bending part of the first framework 12, and the interference fit of the third lip 211 and the first framework 12 is dynamic sealing interference fit with the interference magnitude of not less than 0.05 mm; the fourth lip 212 is positioned at the outer side end of the transverse bending part and is in interference fit with the radial bending part of the first framework 12 in a dynamic sealing manner, and the gap between the fourth lip 212 and the radial bending part of the first framework 12 of the outer ring sealing assembly 1 is not less than 0.1mm in dynamic sealing manner; the third lip 211, the fourth lip 212 and the first skeleton 12 constitute a first sealed chamber 6; the fourth lip 212, the first backbone 12, the fourth backbone and the second lip 112 constitute a second sealed chamber 7. In the embodiment, the outer ring sealing assembly 1 and the mandrel sealing assembly 2 are combined to form a first sealing chamber 6 and a second sealing chamber 7, so that a buffer area and an isolation effect are formed on slight leakage generated in the working process, the influence of leakage on the working of a shaft and a bearing is reduced, and the service lives of the shaft and the bearing are prolonged; in order to improve the sealing effect of the sealing mechanism, a third sealing rubber ring 22 wraps the inner side of a bottom corner of the vertical bending part of the second framework 23, the third sealing rubber ring 22 comprises a fifth lip, the fifth lip is positioned on the inner side of the bottom of the vertical bending part, the fifth lip and the inner diameter bending part of the second framework 23 are in interference fit with the outer diameter of the mandrel 5, the interference magnitude of the interference fit between the fifth lip and the inner diameter bending part of the second framework 23 and the outer diameter of the mandrel 5 is not less than 0.05mm, and a static sealing state of the outer surface of the mandrel 5 is formed; the third sealing rubber ring 22 in this embodiment is set as a third sealing line arranged from outside to inside of the sealing mechanism, where the first sealing line is the second lip 112, the second sealing line is a radial bending portion of the second framework 23, and the third sealing rubber ring 22 is a third sealing line; the second lip 112 in the first sealing line can form effective isolation to external pollutants, the second sealing line and the second sealing chamber 7 can effectively isolate and buffer external light and micro leakage, the third sealing rubber ring 22 can not only isolate internal grease, but also effectively isolate external leakage, and the sealing performance and effect of the sealing mechanism on the outer surface of the mandrel 5 are improved.
In the sealing mechanism in the embodiment, after the shaft connecting bearing is assembled, the mandrel sealing component 2 is installed, wherein the interference fit between the fifth lip and the maximum outer diameter of the mandrel is that the interference magnitude is not less than 0.05mm, so that the static sealing state of the surface of the mandrel is formed; then, the outer ring sealing assembly 1 is installed into the outer ring sealing groove 4, wherein the maximum outer diameter of the first lip is in interference fit with the outer ring sealing groove 4 to form a static sealing state of a bearing outer ring joint surface, and all parts in the installed sealing mechanism are consistent with the sealing mechanism in the embodiment, so that the installation of the sealing mechanism in the embodiment is completed; when the bearing works, grease in the bearing is pushed to the mandrel seal assembly 2 rotating along with the mandrel 5 due to the extrusion of the rolling bodies, the grease is completely sealed in the sealing mechanism by the fifth lip on the third sealing rubber ring 22 in the mandrel seal assembly 2, and partial grease moves towards the bearing outer ring 3 direction along the second framework 23 of the mandrel seal assembly 2 under the influence of centrifugal force, is blocked by the third lip 211 and returns to a lubricating area again. The outer ring sealing component 1 is in a static state along with the bearing outer ring 3, and a dynamic sealing surface formed by a second lip 112 and the mandrel 5 forms sealing protection on external pollutants; the first sealing chamber 6 and the second sealing chamber 7 formed by the outer ring sealing assembly 1 and the mandrel sealing assembly 2 form a buffer area and an isolation effect on slight leakage generated in the working process; this embodiment is through the improvement to sealing mechanism, and bearing inner race is sealed all adopts quiet sealing state with the dabber is sealed, through forming first sealed chamber 6 and the sealed chamber 7 of second, effectively improves the sealed effect and the sealed life-span of shaft coupling bearing, through reducing the requirement to shaft coupling bearing installation concentricity and reducing the early failure that installation error arouses.
The sealing mechanism in the embodiment has the advantages that the traditional bearing sealing mode does not have, the traditional bearing sealing mainly adopts static sealing on the outer ring of the bearing, and the mandrel adopts the dynamic sealing principle to separate internal and external substances; however, due to the difference of the running precision of the bearing and the difference of the sealing interference magnitude, the sealing effect of the bearing is greatly influenced, and the leakage at the position of the mandrel is easy to occur; if a larger interference magnitude is adopted, the rotating torque of the bearing is obviously increased, so that the running power consumption of the equipment is increased; the sealing mechanism in this embodiment achieves the static sealing state of both the outer ring and the inner ring of the bearing by the way of assembling the outer ring sealing component and the mandrel sealing component to separate the inner and outer materials of the bearing, wherein lips independently arranged on the outer ring sealing component and the mandrel sealing component can form an elastic contact touch sealing state, and a Z-shaped labyrinth space formed between the two components plays a role in delaying the intercommunication of the inner and outer materials of the bearing; the lip arranged on the mandrel sealing component is contacted with the outer ring sealing component after being installed, a plurality of buffer sealing chambers can be formed in the Z-shaped space, a buffer area and an isolation effect are formed on slight leakage generated in the working process, the influence of leakage on the working of a shaft and a bearing is reduced, and the service life of the shaft and the bearing is prolonged; the mandrel sealing assembly is installed on the mandrel and then rotates along with the mandrel, the bearing is extruded to grease on the end face of the mandrel sealing assembly by the bearing area in the running process of the bearing, and the grease can be thrown to the outer ring side by the rotating mandrel sealing assembly, so that the grease in the bearing can realize the circulation effect in the rotating process.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A labyrinth seal mechanism for a shaft coupling bearing is characterized in that the seal mechanism comprises an outer ring seal assembly and a mandrel seal assembly; the outer diameter of the outer ring sealing component is embedded in the outer ring sealing groove, and the inner diameter of the outer ring sealing component is in interference fit with the outer diameter of the mandrel; the mandrel sealing assembly is positioned on the inner side of the outer ring sealing assembly, the outer diameter of the mandrel sealing assembly is in dynamic sealing interference fit with the inner side of the outer diameter of the outer ring sealing assembly, and the inner side of the outer diameter of the outer ring sealing assembly and the outer diameter of the mandrel sealing assembly form a first sealing chamber; the inner diameter of the mandrel seal assembly is in interference fit with the outer diameter of the mandrel.
2. The labyrinth seal for a shaft-to-bearing as recited in claim 1, wherein said outer race seal assembly comprises a first armature and a first seal rubber; the cross section of the first framework comprises a notch sealing part, an axial bending part bent towards the axial outer side of the notch sealing part, and a radial bending part bent towards the radial inner side of the axial bending part; the first sealing rubber ring is wrapped at two ends and the outer surface of the first framework and comprises a first lip and a second lip; the first lip is positioned at the top of the notch sealing part and is in interference fit with the outer ring sealing groove; the second lip is located the bottom of radial bend portion, and it and the outside diameter interference fit of dabber.
3. The labyrinth seal mechanism for a shaft coupling bearing as recited in claim 2, wherein said spindle seal comprises a second backbone and a second seal rubber ring; the cross section of the second framework comprises a transverse bending part positioned at the outer diameter, a vertical bending part bent towards the radial inner side from the inner side of the transverse bending part, and an inner-diameter bending part bent towards the axial outer side from the vertical bending part; the second sealing rubber ring is wrapped on the outer surface of the transverse bending part of the second framework; the second sealing rubber ring comprises a third lip and a fourth lip, and the third lip is positioned on the obliquely inner side of the top of the transverse bending part and is in dynamic sealing interference fit with the axial bending part of the first framework; the fourth lip is positioned at the outer side end of the transverse bending part and is in dynamic sealing interference fit with the radial bending part of the first framework; the third lip, the fourth lip and the first framework form a first sealing chamber; and the fourth lip, the first framework, the fourth framework and the second lip form a second sealing cavity.
4. The labyrinth sealing mechanism for the shaft-coupled bearing as claimed in claim 3, wherein a third sealing rubber ring is wrapped around the inside of the bottom corner of the vertical bending portion of the second skeleton, the third sealing rubber ring includes a fifth lip, the fifth lip is located on the inside of the bottom of the vertical bending portion, and the fifth lip and the inner diameter bending portion of the second skeleton are in interference fit with the outer diameter of the mandrel.
5. The labyrinth seal mechanism for the shaft coupling bearing as claimed in claim 4, wherein the interference of the interference fit between the fifth lip and the inner diameter bent part of the second skeleton and the outer diameter of the mandrel is not less than 0.05mm, so as to form a static sealing state of the outer surface of the mandrel.
6. The labyrinth seal mechanism for the shaft coupling bearing as claimed in claim 3, wherein the interference fit of the third lip with the first skeleton is a dynamic seal interference fit with interference magnitude not less than 0.05 mm; and the fourth lip and the radial bending part of the first framework of the outer ring sealing assembly form a gap dynamic seal with a gap not smaller than 0.1 mm.
7. The labyrinth seal mechanism for the shaft coupling bearing according to claim 2, wherein the maximum outer diameter of the first lip and the outer ring seal groove are in interference fit with interference magnitude not less than 0.2mm, so as to form a static seal state of a joint surface of the outer ring of the bearing; and the second lip and the outer diameter of the mandrel form a dynamic sealing state with interference magnitude not less than 0.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022469286.1U CN213541091U (en) | 2020-10-30 | 2020-10-30 | Labyrinth sealing mechanism for shaft-connected bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022469286.1U CN213541091U (en) | 2020-10-30 | 2020-10-30 | Labyrinth sealing mechanism for shaft-connected bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213541091U true CN213541091U (en) | 2021-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022469286.1U Active CN213541091U (en) | 2020-10-30 | 2020-10-30 | Labyrinth sealing mechanism for shaft-connected bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213541091U (en) |
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2020
- 2020-10-30 CN CN202022469286.1U patent/CN213541091U/en active Active
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