CN219045559U - Speed reducer sealing device - Google Patents
Speed reducer sealing device Download PDFInfo
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- CN219045559U CN219045559U CN202320037963.3U CN202320037963U CN219045559U CN 219045559 U CN219045559 U CN 219045559U CN 202320037963 U CN202320037963 U CN 202320037963U CN 219045559 U CN219045559 U CN 219045559U
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Abstract
The utility model provides a speed reducer sealing device, which comprises a speed reducer box body, a shaft rod and a through cover, wherein the speed reducer box body is provided with a bearing mounting hole for supporting the shaft rod, the shaft rod extends out of the speed reducer box body, the through cover is used for axially positioning the shaft rod, the through cover is penetrated with a sealing hole, the shaft rod extends out of the sealing hole, a first sealing area is formed between the inner wall of the sealing hole and the outer wall of the shaft rod, the through cover is also provided with an annular sealing component through a connecting piece, a second sealing area is formed between the inner wall of the annular sealing component and the outer wall of the shaft rod, and the inner wall of the sealing hole is also provided with a first oil return hole.
Description
Technical Field
The utility model relates to the field of mechanical sealing, in particular to a speed reducer sealing device.
Background
The large-scale speed reducer used by the metallurgical casting crane runs at high speed in high-temperature and high-dust environments for a long time, oil leakage of different degrees occurs to the input shaft and the output shaft of the speed reducer, the problem of oil leakage can be solved by using a replacement sealing mode in the initial stage, the sealing surface of the journal of the speed reducer is worn out to different degrees after long-time use, the problem of oil leakage cannot be solved by simply replacing a new seal, only the input shaft and the output shaft of the speed reducer can be replaced, and the production cost is greatly increased by frequently replacing the shaft rod due to the high price of the shaft rod.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a sealing device for a speed reducer, which is used for solving the problem of high production cost caused by frequent replacement of a shaft rod in the prior art.
To achieve the above and other related objects, the present utility model provides a decelerator sealing device comprising:
the box wall of the speed reducer box body is provided with a mounting hole in a penetrating way;
the shaft rod extends out of the speed reducer box body from the mounting hole;
the through cover is used for axially positioning the shaft rod, a sealing hole is penetrated through the through cover, and the shaft rod extends out of the sealing hole from the sealing hole, and a first sealing area is formed between the inner wall of the sealing hole and the outer wall of the shaft rod;
the through cover is further provided with an annular sealing assembly through a connecting piece, the annular sealing assembly is arranged around the shaft rod, and a second sealing area is formed between the inner wall of the annular sealing assembly and the outer wall of the shaft rod;
a sealing ring for sealing is also arranged in the first sealing area or the second sealing area;
the inner wall of the sealing hole is also provided with a first oil return hole, one end of the first oil return hole is communicated with the mounting hole, the other end of the first oil return hole is communicated with the first sealing area, and the first oil return hole is positioned between the sealing ring and the mounting hole.
Optionally, when former first seal area of reduction gear axle head wearing and tearing, the usable annular seal assembly is with sealed face position change from first seal area to in the second seal area, under the condition that does not influence sealed effect and not change the axostylus axostyle, guarantees sealed effect, has avoided frequently changing the axostylus axostyle, has reduced manufacturing cost.
Optionally, the inner wall of the annular sealing assembly is further provided with a second oil return hole, one end of the second oil return hole is communicated with the second sealing area, the other end of the second oil return hole is communicated with the first sealing area, and the second oil return hole is located between the second sealing area and the first sealing area.
Optionally, the annular seal assembly includes sealing ring and sealing fender lid, the sealing ring is cylindric, sealing fender lid is the ring form, the one end terminal surface of sealing ring with lead to the lid and be connected, the other end terminal surface of sealing ring with sealing fender lid's outer lane edge connection, the inner wall of sealing ring still is equipped with and is used for the installation the annular mounting groove of sealing ring, the annular mounting groove with the sealing ring is kept away from the terminal surface switch-on of leading to the lid, the annular mounting groove with form between the axostylus axostyle the second seal area.
Optionally, the connecting piece is the go-between, the go-between coaxial setting is in the sealing ring is close to the terminal surface of logical lid the go-between inserts in the sealed hole, the outer lane of go-between with the inner wall threaded connection of sealed hole.
Optionally, the connecting ring and the sealing ring are integrally formed.
Optionally, at least one connecting hole is further axially penetrated on the sealing ring, at least one limiting hole is further penetrated on the sealing cover, the limiting holes are in one-to-one correspondence with the connecting holes, the limiting holes are communicated with the corresponding connecting holes, and the connecting holes are connected with the limiting holes through bolts.
Optionally, the first oil return hole is located at a groove wall of the annular mounting groove.
Optionally, the inner ring of the through cover is further provided with a baffle ring, the edge of the outer ring of the baffle ring is connected with the edge of the inner ring of the through cover, the edge of the inner ring of the baffle ring is close to the outer wall of the shaft rod, the second oil return hole is located on the baffle ring, one end of the second oil return hole is communicated with the first oil return hole, and the other end of the second oil return hole is communicated with the inside of the speed reducer box.
Optionally, an oil return channel is further arranged on the sealing ring, and the oil return channel is communicated with the first oil return hole or the second oil return hole.
Optionally, the axostylus axostyle passes through the bearing and installs in the mounting hole, still be equipped with the adjusting ring in the mounting hole, the adjusting ring is located the outside of bearing, the outer lane edge of adjusting ring with the inner wall connection of mounting hole, the inner circle edge of adjusting ring is close to and laminating the outer wall of axostylus axostyle.
As described above, the sealing device for the speed reducer has the following beneficial effects: when the original first sealing area of the shaft end of the speed reducer is worn, the annular sealing assembly can be utilized to replace the sealing surface from the first sealing area to the second sealing area, and meanwhile, the first oil return hole can be utilized to return part of oil, so that the pressure of the sealing ring is reduced, frequent replacement of the sealing and the shaft rod is avoided, and the production cost is reduced.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of the present utility model;
fig. 2 is a partial enlarged view at X of fig. 1.
Description of the part reference numerals
1 speed reducer box
1a adjusting ring
2 shaft lever
3 through cover
3a baffle ring
4 sealing ring
5 seal cover
6 sealing ring
Detailed Description
Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model.
Please refer to fig. 1 to 2. It should be noted that, the illustrations provided in the present embodiment merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of each component in actual implementation may be arbitrarily changed, and the layout of the components may be more complex. The structures, proportions, sizes, etc. shown in the drawings attached hereto are for illustration purposes only and are not intended to limit the scope of the utility model, which is defined by the claims, but rather by the claims. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.
The utility model provides a speed reducer sealing device, which is shown in fig. 1 to 2, and comprises a speed reducer box body 1, wherein a mounting hole is penetrated on the wall of the speed reducer box body 1;
a shaft lever 2, the shaft lever 2 protruding from the mounting hole from the speed reducer case 1;
the through cover 3 is used for plugging the shaft lever 2 and the mounting hole, meanwhile, the through cover 3 is used for axially positioning the shaft lever, the through cover 3 is also penetrated with a sealing hole, the shaft lever 2 extends out of the sealing hole, and a first sealing area is formed between the inner wall of the sealing hole and the outer wall of the shaft lever 2;
the through cover 3 is further provided with an annular sealing assembly through a connecting piece, the annular sealing assembly is arranged around the shaft rod 2, and a second sealing area is formed between the inner wall of the annular sealing assembly and the outer wall of the shaft rod 2;
a sealing ring 6 for sealing is further arranged in the first sealing area or the second sealing area, when the outer wall of the shaft lever 2 in the first sealing area is worn, new sealing can be performed in the second sealing area, and the shaft lever 2 is prevented from being replaced;
the inner wall of the sealing hole is also provided with a first oil return hole, one end of the first oil return hole is communicated with the mounting hole, the other end of the first oil return hole is communicated with the first sealing area, and the first oil return hole is positioned between the sealing ring 6 and the mounting hole and used for reducing oil pressure in the first sealing area.
In one embodiment, the inner wall of the annular sealing assembly is further provided with a second oil return hole, one end of the second oil return hole is communicated with the second sealing area, the other end of the second oil return hole is communicated with the first sealing area, and the second oil return hole is located between the second sealing area and the first sealing area.
In one embodiment, the annular sealing assembly comprises a sealing ring 4 and a sealing baffle cover 5, the sealing ring 4 is cylindrical, the sealing baffle cover 5 is annular, one end face of the sealing ring 4 is connected with the through cover 3, the other end face of the sealing ring 4 is connected with the edge of the outer ring of the sealing baffle cover 5, an annular mounting groove for mounting the sealing ring 6 is further formed in the inner wall of the sealing ring 4, the annular mounting groove is communicated with the end face of the sealing ring 4, which is far away from the through cover 3, and a second sealing area is formed between the annular mounting groove and the shaft lever 2.
In one embodiment, the connecting piece is a connecting ring, the connecting ring is coaxially arranged on the end surface of the sealing ring 4, which is close to the through cover 3, the connecting ring is integrally formed with the sealing ring 4, the connecting ring is inserted into the sealing hole, and the outer ring of the connecting ring is in threaded connection with the inner wall of the sealing hole.
In one embodiment, the sealing ring 4 is further axially penetrated with at least one connecting hole, the sealing cover 5 is further penetrated with at least one limiting hole, the limiting holes are in one-to-one correspondence with the connecting holes, the limiting holes are communicated with the corresponding connecting holes, and the connecting holes are connected with the limiting holes through bolts.
In one embodiment, the first oil return hole is located at a groove wall of the annular mounting groove.
In one embodiment, the inner ring of the through cover 3 is further provided with a baffle ring 3a, the outer ring edge of the baffle ring 3a is connected with the inner ring edge of the through cover 3, the inner ring edge of the baffle ring 3a is close to the outer wall of the shaft lever 2 and used for reducing a gap between the through cover 3 and the shaft lever 2, the second oil return hole is located on the baffle ring 3a, one end of the second oil return hole is communicated with the first oil return hole, and the other end of the second oil return hole is communicated with the interior of the reducer box 1.
In one embodiment, the sealing ring 6 is further provided with an oil return channel, and the oil return channel is communicated with the first oil return hole or the second oil return hole.
In one embodiment, the shaft lever 2 is installed in the installation hole through a bearing, an adjusting ring 1a is further arranged in the installation hole, the adjusting ring 1a is located at the outer side of the bearing, the outer ring edge of the adjusting ring 1a is connected with the inner wall of the installation hole, and the inner ring edge of the adjusting ring 1a is close to and attached to the outer wall of the shaft lever 2.
In one embodiment, when oil in the reducer casing 1 leaks outwards along the outer wall of the shaft lever 2, the first sealing area between the shaft lever 2 and the through cover 3 is provided with a seal, in the use process, the seal can be worn with the outer wall of the shaft lever 2, when the outer wall of the shaft lever 2 is worn and can not be sealed, an annular sealing assembly can be provided, a new second sealing area is formed in the axial direction of the shaft lever 2, meanwhile, oil along the shaft lever 2 can flow back through an oil return channel, a first oil return hole and a second oil return hole, the condition of oil accumulation is avoided, after the wear occurs, a plurality of annular sealing assemblies can be arranged on the through cover 3 to form a plurality of corresponding sealing areas in the axial direction of the shaft lever 2 for sealing, the use time of the shaft lever 2 is greatly prolonged, and the cost of replacing the shaft lever 2 is reduced.
The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model, and it is intended that the appended claims be interpreted as covering all equivalent modifications and variations as fall within the true spirit and scope of the utility model.
Claims (10)
1. A speed reducer sealing device, comprising:
the speed reducer comprises a speed reducer box body (1), wherein a mounting hole is penetrated through the wall of the speed reducer box body (1);
a shaft lever (2), the shaft lever (2) extends out of the reducer box body (1) from the mounting hole;
the through cover (3) is used for axially positioning the shaft lever (2), a sealing hole is penetrated through the through cover (3), the shaft lever (2) extends out of the sealing hole, and a first sealing area is formed between the inner wall of the sealing hole and the outer wall of the shaft lever (2);
the through cover (3) is further provided with an annular sealing assembly through a connecting piece, the annular sealing assembly is arranged around the shaft rod (2), and a second sealing area is formed between the inner wall of the annular sealing assembly and the outer wall of the shaft rod (2);
a sealing ring (6) for sealing is also arranged in the first sealing area or the second sealing area;
the inner wall of the sealing hole is also provided with a first oil return hole, one end of the first oil return hole is communicated with the mounting hole, the other end of the first oil return hole is communicated with the first sealing area, and the first oil return hole is positioned between the sealing ring (6) and the mounting hole.
2. A decelerator sealing device as claimed in claim 1, wherein: the inner wall of the annular sealing assembly is further provided with a second oil return hole, one end of the second oil return hole is communicated with the second sealing area, the other end of the second oil return hole is communicated with the first sealing area, and the second oil return hole is located between the second sealing area and the first sealing area.
3. A decelerator sealing device as claimed in claim 2, wherein: the annular sealing assembly comprises a sealing ring (4) and a sealing baffle cover (5), the sealing ring (4) is cylindrical, the sealing baffle cover (5) is annular, one end face of the sealing ring (4) is connected with the through cover (3), the other end face of the sealing ring (4) is connected with the outer ring edge of the sealing baffle cover (5), an annular mounting groove for mounting the sealing ring (6) is further formed in the inner wall of the sealing ring (4), the annular mounting groove is far away from the sealing ring (4) and is communicated with the end face of the through cover (3), and a second sealing area is formed between the annular mounting groove and the shaft rod (2).
4. A decelerator sealing device as claimed in claim 3, wherein: the connecting piece is a connecting ring, the connecting ring is coaxially arranged on the end face, close to the through cover (3), of the sealing ring (4), the connecting ring is inserted into the sealing hole, and the outer ring of the connecting ring is in threaded connection with the inner wall of the sealing hole.
5. A decelerator sealing device as claimed in claim 4, wherein: the connecting ring and the sealing ring (4) are integrally formed.
6. A decelerator sealing device as claimed in claim 5, wherein: the sealing ring (4) is further axially penetrated with at least one connecting hole, the sealing baffle cover (5) is further penetrated with at least one limiting hole, the limiting holes are in one-to-one correspondence with the connecting holes, the limiting holes are communicated with the corresponding connecting holes, and the connecting holes are connected with the limiting holes through bolts.
7. A decelerator sealing device as claimed in claim 6, wherein: the first oil return hole is positioned on the groove wall of the annular mounting groove.
8. A decelerator seal as defined in claim 7, wherein: the inner ring of the through cover (3) is further provided with a baffle ring (3 a), the outer ring edge of the baffle ring (3 a) is connected with the inner ring edge of the through cover (3), the inner ring edge of the baffle ring (3 a) is close to the outer wall of the shaft rod (2), a second oil return hole is formed in the baffle ring (3 a), one end of the second oil return hole is communicated with the first oil return hole, and the other end of the second oil return hole is communicated with the inside of the speed reducer box (1).
9. A decelerator sealing device as claimed in claim 8, wherein: and an oil return channel is further arranged on the sealing ring (6), and the oil return channel is communicated with the first oil return hole or the second oil return hole.
10. A decelerator sealing device as claimed in claim 9, wherein: the shaft rod (2) is installed in the installation hole through the bearing, an adjusting ring (1 a) is further arranged in the installation hole, the adjusting ring (1 a) is located on the outer side of the bearing, the outer ring edge of the adjusting ring (1 a) is connected with the inner wall of the installation hole, and the inner ring edge of the adjusting ring (1 a) is close to and attached to the outer wall of the shaft rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320037963.3U CN219045559U (en) | 2023-01-06 | 2023-01-06 | Speed reducer sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320037963.3U CN219045559U (en) | 2023-01-06 | 2023-01-06 | Speed reducer sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219045559U true CN219045559U (en) | 2023-05-19 |
Family
ID=86319310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320037963.3U Active CN219045559U (en) | 2023-01-06 | 2023-01-06 | Speed reducer sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219045559U (en) |
-
2023
- 2023-01-06 CN CN202320037963.3U patent/CN219045559U/en active Active
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