CN216768085U - Combined bearing sealing structure - Google Patents
Combined bearing sealing structure Download PDFInfo
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- CN216768085U CN216768085U CN202123430224.0U CN202123430224U CN216768085U CN 216768085 U CN216768085 U CN 216768085U CN 202123430224 U CN202123430224 U CN 202123430224U CN 216768085 U CN216768085 U CN 216768085U
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Abstract
The utility model discloses a combined bearing sealing structure which comprises a bearing body, wherein the bearing body comprises an inner ring and an outer ring which are coaxially arranged, a retainer is arranged between the inner ring and the outer ring, balls distributed in a circumferential array are arranged on the retainer, and a sealing assembly for sealing the bearing body is arranged on the side wall of the inner ring. The combined bearing sealing structure is provided with a first sealing ring which is matched with a second sealing ring to seal a bearing body, wherein a third axial bulge matched with a groove of an outer ring is arranged on the first sealing ring, so that the first sealing ring is tightly attached to the inner wall of the outer ring, the first sealing ring is axially provided with a first axial bulge, and the second sealing ring is matched with a second axial bulge meshed with the first axial bulge to lock the first sealing ring and the second sealing ring on the bearing body.
Description
Technical Field
The utility model relates to a combined bearing sealing structure.
Background
The bearing is a common part in the mechanical manufacturing process, can assist the mechanical body to rotate, reduces the friction force applied in the rotating process, and has an important function. The lubrication mode of the bearing is generally grease lubrication and oil lubrication, and the bearing which is grease lubrication or oil lubrication usually needs sealing.
According to a sealed dustproof combination formula bearing seal structure that patent number CN211175029U discloses, set up seal structure between bearing inner race and outer lane, seal structure includes sealing washer and shield, the shield sets up in the outside of sealing washer, shield and bearing inner race interference fit, shield and bearing inner race clearance fit, the sealing washer is provided with the tail lip that prevents the axial float of shield. This sealed dustproof combination formula bearing seal structure, compact structure, the whole integration of sealing member can directly replace the bearing product of the same model in that the bearing is inside, simultaneously because adopt two lips to seal its sealed effect better than traditional sealing washer, can be better prevent that the foreign matter from getting into inside the bearing, improve the sealing performance of bearing, prolong bearing life, guarantee the bearing normal rotation simultaneously, satisfy the bearing demand.
The common bearing sealing modes include axial sealing, radial sealing and the like, wherein the sealing effect of a sealing ring of the axial sealing is general, while the sealing ring of the radial sealing can fall off under the action of centrifugal force in the high-speed rotating process of the bearing, so that a combined sealing structure is needed, and the combined sealing structure can be firmly fixed on the bearing and can also play a good sealing effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a combined bearing sealing structure, and aims to solve the problems that the existing axial sealing ring has a common sealing effect and a radial sealing ring is likely to fall off under the action of centrifugal force in the high-speed rotation process of a bearing.
In order to achieve the above purpose, the utility model provides the following technical scheme: the utility model provides a modular bearing seal structure, includes the bearing body, the bearing body includes inner circle and the outer lane with the axle center setting, be provided with the holder between inner circle and the outer lane, be provided with the ball that is the circumference array and distributes on the holder, be provided with sealedly on the lateral wall of inner circle the seal assembly that the bearing body was used.
Preferably, a groove is formed in the side wall, facing the inner ring, of the outer ring, the sealing assembly comprises first sealing rings which are symmetrically distributed about the retainer, and a third axial protruding portion matched with the groove is arranged on the side wall, facing the outer ring, of the first sealing ring.
Preferably, an axial convex part I is arranged on the side wall of the first sealing ring facing the inner ring, and a radial convex part I is arranged on the side wall of the first sealing ring opposite to the retainer.
Preferably, a second sealing ring is arranged on the side wall of the inner ring, the second sealing ring comprises an axial portion and a radial portion, a second axial protruding portion meshed with the first axial protruding portion is arranged on the side wall of the axial portion facing the first sealing ring, and a second radial protruding portion meshed with the first radial protruding portion is arranged on the side wall of the radial portion facing the first sealing ring.
Preferably, a notch is formed in a side wall of the radial portion opposite to the axial portion, and a liquid guide tube communicated to the inner side of the bearing body penetrates through the axial portion on the inner wall of the notch.
Preferably, a sealing plug is arranged in the notch, and a corrugated pipe is arranged on the sealing plug.
Preferably, the sealing plug is a rubber plug.
Preferably, the bellows is embodied as a plastic tube.
In the above technical solution, the combined bearing sealing structure provided by the present invention has the following beneficial effects: the combined bearing sealing structure is provided with a first sealing ring matched with a second sealing ring to seal a bearing body, a third axial bulge matched with a groove of an outer ring is arranged on the first sealing ring, so that the first sealing ring is tightly attached to the inner wall of the outer ring, the first sealing ring is axially provided with the first axial bulge, and the second sealing ring is matched with the second axial bulge engaged with the first axial bulge to lock the first sealing ring and the second sealing ring on the bearing body.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic structural diagram of a bearing seal provided in an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a bearing seal provided in accordance with an embodiment of the present invention;
FIG. 3 is a schematic view of a portion of a bearing seal provided in accordance with an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a first seal ring and a second seal ring according to an embodiment of the present invention.
Description of reference numerals:
1. an outer ring; 2. a first sealing ring; 3. a second sealing ring; 31. a sealing plug; 32. a bellows; 33. a catheter; 4. an inner ring; 5. a holder; 6. and a ball.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 4, a combined bearing sealing structure includes a bearing body, the bearing body includes an inner ring 4 and an outer ring 1 which are coaxially disposed, a retainer 5 is disposed between the inner ring 4 and the outer ring 1, balls 6 distributed in a circumferential array are disposed on the retainer 5, and a sealing assembly for sealing the bearing body is disposed on a side wall of the inner ring 4.
In the technical scheme, the first sealing ring 2 and the second sealing ring 3 are both made of rubber, the first sealing ring 2 is provided with a third axial bulge part matched with a groove of the outer ring 1, so that the first sealing ring 2 is tightly attached to the inner wall of the outer ring 1, the first sealing ring 2 is axially provided with the first axial bulge part and is matched with the second axial bulge part meshed with the first sealing ring 3, so that the first sealing ring 2 and the second sealing ring 3 are locked on the bearing body, and the first sealing ring 2 is radially provided with the first radial bulge part and is matched with the second radial bulge part meshed with the second sealing ring 3 to seal the bearing body; when needing to add lubricated to this internal oiling of bearing, take out sealing plug 31 from the notch in, drop the lubricated oil into the notch in, flare-out bellows 32, fill in the notch with sealing plug 31 again, extrude bellows 32 and make it folding, utilize the atmospheric pressure that produces to pass through catheter 33 with lubricating oil and arrange into this internally with the bearing.
As shown in fig. 1-2, a groove is formed in a side wall of the outer ring 1 facing the inner ring 4, the sealing assembly comprises a first sealing ring 2 symmetrically distributed about the retainer 5, a third axial protruding portion matched with the groove is arranged on the side wall of the first sealing ring 2 facing the outer ring 1, and the third axial protruding portion is matched with the groove to enable the first sealing ring 2 to be tightly attached to the inner wall of the outer ring 1.
As shown in fig. 2, a first axial protrusion is arranged on the side wall of the first sealing ring 2 facing the inner ring 4, and a first radial protrusion is arranged on the side wall of the first sealing ring 2 opposite to the retainer 5, when the bearing is installed, the first sealing ring 2 is installed on the bearing body, so that a third axial protrusion on the first sealing ring 2 is inserted into a groove on the inner wall of the outer ring 1, and then the second sealing ring 3 is installed on the bearing body, so that a second axial protrusion on the second sealing ring 3 is meshed with the first axial protrusion on the first sealing ring 2, the two sealing rings are locked on the bearing body, the second radial protrusion on the second sealing ring 3 is meshed with the first radial protrusion on the first sealing ring 2, and the first axial protrusion and the second axial protrusion which are meshed with each other are matched to seal the bearing body.
As shown in fig. 1-2, a second sealing ring 3 is arranged on the side wall of the inner ring 4, the second sealing ring 3 comprises an axial part and a radial part, a second axial bulge part meshed with the first axial bulge part is arranged on the side wall of the axial part facing the first sealing ring 2, and a second radial bulge part meshed with the first radial bulge part is arranged on the side wall of the radial part facing the first sealing ring 2, when the bearing is installed, the first sealing ring 2 is firstly installed on the bearing body, the third axial bulge part on the first sealing ring 2 is inserted into a groove on the inner wall of the outer ring 1, the second sealing ring 3 is installed on the bearing body, the second axial bulge part on the second sealing ring 3 is meshed with the first axial bulge part on the first sealing ring 2, the two sealing rings are locked on the bearing body, the second radial bulge part on the second sealing ring 3 is meshed with the first radial bulge part on the first sealing ring 2, and the first axial bulge part and the second axial bulge part which are meshed with each other, the sealing function is achieved.
As shown in fig. 2, the radial portion has been seted up the notch on the lateral wall relative to the axial portion, run through the axial portion on the inner wall of notch and seted up the catheter 33 that communicates to the bearing body inboard, when need to add the oil lubrication to the bearing body, take out sealing plug 31 from the notch, drop the lubricated oil in the notch, straighten bellows 32, fill in the notch with sealing plug 31 again, the extrusion bellows 32 makes it folding, utilize the atmospheric pressure that produces to pass through catheter 33 with lubricating oil and discharge into the bearing body internally.
As shown in fig. 2-3, a sealing plug 31 is arranged in the notch, a corrugated tube 32 is arranged on the sealing plug 31, when oil needs to be added into the bearing body for lubrication, the sealing plug 31 is taken out from the notch, the lubricating oil is dropped into the notch, the corrugated tube 32 is straightened, the sealing plug 31 is plugged into the notch, the corrugated tube 32 is extruded to be folded, and the lubricating oil is discharged into the bearing body through a liquid guide tube 33 by utilizing the generated air pressure.
As shown in fig. 2-3, the sealing plug 31 is a rubber plug, and the rubber surface has a large friction coefficient, and can be tightly attached to the sidewall of the notch, so that the rubber plug is not easy to fall off.
As shown in fig. 2, the corrugated tube 32 is a plastic tube, which has the advantages of low cost and high plasticity.
The working principle is as follows: the first sealing ring 2 is provided with a third axial bulge part matched with the groove of the outer ring 1, so that the first sealing ring 2 is tightly attached to the inner wall of the outer ring 1, the first axial bulge part is axially arranged on the first sealing ring 2, and the first sealing ring 2 and the second sealing ring 3 are locked on the bearing body by matching with a second axial bulge part meshed with the first sealing ring 3, and the first radial bulge part is radially arranged on the first sealing ring 2 and is matched with a second radial bulge part meshed with the second sealing ring 3 to seal the bearing body; when needing to add lubricated to this internal oiling of bearing, take out sealing plug 31 from the notch in, drop the lubricated oil into the notch in, flare-out bellows 32, fill in the notch with sealing plug 31 again, extrude bellows 32 and make it folding, utilize the atmospheric pressure that produces to pass through catheter 33 with lubricating oil and arrange into this internally with the bearing.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the utility model.
Claims (5)
1. The combined bearing sealing structure comprises a bearing body and is characterized in that the bearing body comprises an inner ring (4) and an outer ring (1) which are coaxially arranged, a retainer (5) is arranged between the inner ring (4) and the outer ring (1), balls (6) distributed in a circumferential array are arranged on the retainer (5), and a sealing assembly for sealing the bearing body is arranged on the side wall of the inner ring (4);
a groove is formed in the side wall, facing the inner ring (4), of the outer ring (1), the sealing assembly comprises first sealing rings (2) which are symmetrically distributed relative to the retainer (5), and axial protruding parts (III) matched with the grooves are formed in the side wall, facing the outer ring (1), of the first sealing rings (2);
an axial bulge part I is arranged on the side wall, facing the inner ring (4), of the first sealing ring (2), and a radial bulge part I is arranged on the side wall, opposite to the retainer (5), of the first sealing ring (2);
and a second sealing ring (3) is arranged on the side wall of the inner ring (4), the second sealing ring (3) comprises an axial part and a radial part, the axial part faces towards the side wall of the first sealing ring (2) and is provided with a second axial bulge part meshed with the first axial bulge part, and the radial part faces towards the side wall of the first sealing ring (2) and is provided with a second radial bulge part meshed with the first radial bulge part.
2. A combined bearing and seal structure according to claim 1, wherein the radial portion has a notch formed in a side wall thereof opposite to the axial portion, and a fluid conduit (33) communicating with the inside of the bearing body is formed through the axial portion on an inner wall of the notch.
3. A combined bearing and sealing arrangement according to claim 2, characterised in that a sealing plug (31) is arranged in the slot, and a bellows (32) is arranged on the sealing plug (31).
4. A combined bearing and sealing arrangement according to claim 3, characterised in that the sealing plug (31) is embodied as a rubber plug.
5. A combined bearing and seal arrangement according to claim 3, characterised in that the bellows (32) is embodied as a plastic tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123430224.0U CN216768085U (en) | 2021-12-31 | 2021-12-31 | Combined bearing sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123430224.0U CN216768085U (en) | 2021-12-31 | 2021-12-31 | Combined bearing sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216768085U true CN216768085U (en) | 2022-06-17 |
Family
ID=81970468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123430224.0U Active CN216768085U (en) | 2021-12-31 | 2021-12-31 | Combined bearing sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216768085U (en) |
-
2021
- 2021-12-31 CN CN202123430224.0U patent/CN216768085U/en active Active
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