CN212360733U - Planet reducing gear box output shaft seal structure of integral type - Google Patents
Planet reducing gear box output shaft seal structure of integral type Download PDFInfo
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- CN212360733U CN212360733U CN202020399423.6U CN202020399423U CN212360733U CN 212360733 U CN212360733 U CN 212360733U CN 202020399423 U CN202020399423 U CN 202020399423U CN 212360733 U CN212360733 U CN 212360733U
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- output shaft
- end cover
- reduction gearbox
- connecting hole
- sealing
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Abstract
The utility model discloses a planet reducing gear box output shaft seal structure of integral type, including the output shaft, the output shaft end cap, the big end cap of output shaft, planetary gear, go up tapered roller bearing, tapered roller bearing down, go up the sealing member, lower sealing member, glib talker and holding screw, the output shaft is the step shaft of vertical setting, planetary gear, go up tapered roller bearing, tapered roller bearing down, go up the sealing member, the sealing member setting is on the output shaft down, it is connected with the bearing position on the speed reducer casing to go up tapered roller bearing, it is sealed with the bearing position to be equipped with the reducing gear box end cap on the speed reducer casing, planetary gear is connected with the transmission of speed reducer gear. A planet reducing gear box output shaft seal structure of integral type, its is rational in infrastructure, have advantages such as convenient to use, the leakproofness is good, long service life, effectively solve the problem that general vertical scroll planetary mixer planet reducing gear box production cost of maintenance is high.
Description
Technical Field
The utility model belongs to the technical field of the reducing gear box for the concrete mixer and specifically relates to a planet reducing gear box output shaft seal structure of an integral type is related to.
Background
In the known technology, the output shaft of a planetary reduction gearbox of a general vertical shaft planetary mixer is connected with a shell, once the sealing is not good, a transmission gear or a bearing of the output shaft is easy to damage, the shell of the planetary reduction gearbox needs to be completely detached during maintenance to replace and maintain, the production cost and the maintenance cost are greatly increased, and therefore an integrated sealing structure for the output shaft of the planetary reduction gearbox is needed to be designed.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: in order to overcome the problems, the output shaft sealing structure of the planetary reduction gearbox is reasonable in structure, has the advantages of convenience in use, good sealing performance, long service life and the like, and effectively solves the problem that the planetary reduction gearbox of a common vertical shaft planetary mixer is high in production and maintenance cost.
The utility model provides a technical scheme that its technical problem adopted is: an integrated planetary reduction gearbox output shaft sealing structure comprises an output shaft, an output shaft small end cover, an output shaft large end cover, a planetary gear, an upper tapered roller bearing, a lower tapered roller bearing, an upper sealing element, a lower sealing element, a nozzle tip and a set screw, wherein the output shaft is a stepped shaft which is vertically arranged, and the output shaft is sequentially provided with a first step, a second step, a third step, a fourth step and a fifth step from top to bottom;
the upper conical roller bearing is arranged on the first step and is connected with a bearing position on the speed reducer shell, and a speed reducer end cover is arranged on the speed reducer shell to seal the bearing position; the planetary gear is connected and arranged on the second step through a flat key and is in transmission connection with the speed reducer gear set; the lower tapered roller bearing is arranged on the fifth step;
a bearing connecting hole and an upper annular groove are arranged on the central axis of the middle part of the large end cover of the output shaft, wherein the bearing connecting hole is connected with the lower tapered roller bearing, an upper sealing element is arranged in the upper annular groove, and the upper sealing element is in rotary sealing connection with the third step; the large end cover of the output shaft is provided with a convex block, a through groove communicated with the bearing connecting hole is transversely arranged on the convex block, one end of the through groove, which is far away from the bearing connecting hole, is provided with a set screw for sealing and locking, and meanwhile, the large end cover of the output shaft is vertically provided with an oil filling hole communicated with the through groove from bottom to top, and the oil filling hole is provided with an oil nozzle; the large end cover of the output shaft is also provided with a first convex ring and a large end cover connecting hole at the opening edge of the bearing connecting hole, and a bolt is arranged in the large end cover connecting hole and is fixedly connected with the shell of the speed reducer;
a lower annular groove is formed in the small end cover of the output shaft, a lower sealing element is arranged in the lower annular groove, and the lower sealing element is in rotary sealing connection with the fifth step; the small end cover of the output shaft is also provided with a second convex ring which is sleeved into the first convex ring to form labyrinth seal; and the small end cover of the output shaft is provided with a small end cover connecting hole which is fixedly connected with a connecting hole on the large end cover of the output shaft through a bolt.
Furthermore, the reduction gearbox end cover has a circular structure, a third convex ring is arranged on one surface of the reduction gearbox end cover facing the output shaft, the third convex ring is abutted and sealed with the edge of an opening on the reduction gearbox shell, and the reduction gearbox end cover is fixedly connected with the reduction gearbox shell through a bolt arranged on a connecting hole of the reduction gearbox end cover.
Furthermore, the connecting hole of the end cover of the reduction gearbox, the connecting hole of the large end cover and the connecting hole of the small end cover are all a plurality of connecting holes which are arranged around the output shaft along a right circular track.
Furthermore, a notch is formed in the position, aligned with the oil nozzle, of the small end cover of the output shaft.
Further, the upper sealing element and the lower sealing element are both U-shaped sealing elements, and the notches of the upper sealing element and the lower sealing element are oppositely arranged.
The utility model has the advantages that: an integrated planetary reduction gearbox output shaft sealing structure is assembled to form an integrated structure, and when in maintenance, an output shaft and a transmission part can be integrally taken out only by disassembling a large end cover of the output shaft, so that the maintenance is convenient and the cost input is reduced; through the sealing action of the upper sealing piece of the output shaft and the lower sealing piece of the output shaft, a cavity is formed between the large end cover of the output shaft and the small end cover of the output shaft, lubricating grease is filled, the lubricating grease of the planetary reduction gearbox is effectively protected from being lost, meanwhile, the lubricating grease also has a good sealing effect, and mud is prevented from entering the sealing position of the shaft end, so that the service life of the planetary reduction gearbox is prolonged; a labyrinth seal is arranged at the joint of the large output shaft end cover and the small output shaft end cover, the reduction box end cover is in butt seal with the reduction box shell, and the large output shaft end cover is in butt seal with the reduction box shell to prevent silt from entering the reduction box; the planetary reduction gearbox of the vertical shaft planetary mixer has the advantages of reasonable structure, convenience in use, good sealing performance, long service life and the like, and effectively solves the problem of high production and maintenance cost of the planetary reduction gearbox of the common vertical shaft planetary mixer.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic diagram of an overall three-dimensional structure of an output shaft sealing structure of an integrated planetary reduction gearbox according to the present invention;
fig. 2 is a schematic view of a partial section structure of an output shaft sealing structure of an integrated planetary reduction gearbox according to the present invention;
fig. 3 is a schematic diagram of the overall structure of the output shaft sealing structure of the integrated planetary reduction gearbox according to the present invention;
fig. 4 is a structural diagram of an output shaft structure of an integrated planetary reduction box output shaft sealing structure of the utility model;
FIG. 5 is a schematic view of the output shaft small end cap structure of the output shaft sealing structure of the integrated planetary reduction gearbox of the present invention;
FIG. 6 is a schematic view of the output shaft small end cap structure of the output shaft sealing structure of the integrated planetary reduction gearbox of the present invention;
FIG. 7 is a schematic view of the structure of the large end cover of the output shaft of the integrated planetary reduction box output shaft sealing structure of the present invention;
FIG. 8 is a schematic view of the structure of the large end cover of the output shaft of the integrated planetary reduction box output shaft sealing structure of the present invention;
fig. 9 is a schematic diagram of the reduction gearbox end cover structure of the planetary reduction gearbox output shaft sealing structure of the integrated type.
The scores in the figures are as follows:
1. an output shaft 1-1, a first step 1-2, a second step 1-3, a third step 1-4, a fourth step 1-5, a fifth step 1-6, a flat key 2, an output shaft small end cover 2-1, a second convex ring 2-3, a small end cover connecting hole 2-4, a lower annular groove 2-5, a notch 3, an output shaft large end cover 3-1, a through groove 3-4, an upper annular groove 3-5, a large end cover connecting hole 3-6, an oil filling hole 3-7, a first convex ring 3-8, a bearing connecting hole 3-9, a connecting hole 3-10, a bump 4, a planetary gear 5, an upper tapered roller bearing 6, a lower tapered roller bearing 7, an upper sealing piece 8, a lower sealing piece, 9. the oil nozzle comprises an oil nozzle body 10, a set screw 11, a reduction gearbox end cover 11-1, a reduction gearbox end cover connecting hole 11-3, a third convex ring 12 and a reduction gearbox shell.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
An integrated planetary reduction gearbox output shaft sealing structure as shown in fig. 1 to 9 comprises an output shaft 1, an output shaft small end cover 2, an output shaft large end cover 3, a planetary gear 4, an upper tapered roller bearing 5, a lower tapered roller bearing 6, an upper sealing element 7, a lower sealing element 8, a choke 9 and a set screw 10.
As shown in fig. 4, the output shaft 1 is a vertically arranged stepped shaft, and the output shaft 1 is provided with a first step 1-1, a second step 1-2, a third step 1-3, a fourth step 1-4 and a fifth step 1-5 in sequence from top to bottom.
As shown in fig. 3, the upper tapered roller bearing 5 is arranged on the first step 1-1, the upper tapered roller bearing 5 is connected with a bearing position on the reducer casing 12, and the reducer casing 12 is provided with a reducer casing end cover 11 for sealing the bearing position; the planetary gear 4 is connected and arranged on the second step 1-2 through a flat key 1-6, and the planetary gear 4 is in transmission connection with a speed reducer gear set; the lower tapered roller bearing 6 is arranged on the fifth step 1-5.
As shown in fig. 7 and 8, a bearing connecting hole 3-8 and an upper annular groove 3-4 are arranged on the same central axis at the middle part of the output shaft large end cover 3, wherein the bearing connecting hole 3-8 is connected with a lower tapered roller bearing 6, an upper sealing element 7 is arranged in the upper annular groove 3-4, and the upper sealing element 7 is in rotary sealing connection with the third step 1-3; the large output shaft end cover 3 is provided with a bump 3-10, the bump 3-10 is transversely provided with a through groove 3-1 communicated with a bearing connecting hole 3-8, one end of the through groove 3-1, which is far away from the bearing connecting hole 3-8, is provided with a set screw 10 for sealing and locking, meanwhile, the large output shaft end cover 3 is vertically provided with an oil filling hole 3-6 communicated with the through groove 3-1 from bottom to top, and the oil filling hole 3-6 is provided with an oil nozzle 9; the large end cover 3 of the output shaft is also provided with a first convex ring 3-7 and a large end cover connecting hole 3-5 at the opening edge of the bearing connecting hole 3-8, and a bolt is arranged in the large end cover connecting hole 3-5 and is fixedly abutted and sealed with the speed reducer shell 12.
As shown in fig. 5 and 6, a lower annular groove 2-4 is formed in the output shaft small end cover 2, a lower sealing element 8 is arranged in the lower annular groove 2-4, and the lower sealing element 8 is in rotary sealing connection with a fifth step 1-5; a second convex ring 2-1 is also arranged on the small end cover 2 of the output shaft, and the second convex ring 2-1 is sleeved into the first convex ring 3-7 to form labyrinth seal; the small end cover 2 of the output shaft is provided with small end cover connecting holes 2-3, and the small end cover connecting holes 2-3 are fixedly connected with connecting holes 3-9 on the large end cover 3 of the output shaft through bolts.
The bearing connecting holes 3-8 and the lower annular grooves 2-4 are buckled to form a cavity, oil is injected from the oil nipple 9, and lubricating grease enters the cavity from the oil injection holes 3-6 through the through grooves 3-1.
In one embodiment, the reduction gearbox end cover 11 has a circular structure, a third convex ring 11-3 is arranged on one surface of the reduction gearbox end cover 11 facing the output shaft 1, the third convex ring 11-3 is abutted and sealed with the edge of an opening on the reduction gearbox shell 12, and the reduction gearbox end cover 11 is fixedly connected with the reduction gearbox shell 12 through a bolt arranged on a reduction gearbox end cover connecting hole 11-1.
In another possible embodiment, the cross section of the output shaft large end cover and the reduction gearbox end cover 11 is circular, or irregular and irregular, as long as the output shaft large end cover and the reduction gearbox end cover 11 can be in sealing connection with the reduction gearbox shell 12.
In one embodiment, the connecting holes 3-9, the connecting holes 11-1 of the end cover of the reduction gearbox, the connecting holes 3-5 of the large end cover and the connecting holes 2-3 of the small end cover are all a plurality of connecting holes arranged around the output shaft 1 along a perfect circular track.
In one embodiment, the output shaft small end cover 2 is provided with a notch 2-5 aligned with the oil nozzle 9, so that oil injection operation is facilitated, and the output shaft small end cover 2 is prevented from shielding the oil nozzle.
In one embodiment, the upper and lower sealing members 7 and 8 are U-shaped sealing members, or U-shaped oil seals, and the notches of the upper and lower sealing members 7 and 8 are disposed opposite to each other.
The utility model discloses an integral type planet reducing gear box output shaft seal structure, its is rational in infrastructure, through after the installation combination, form an organic whole structure, only need take out output shaft and transmission part wholly when the maintenance apart output shaft big end cover, convenient maintenance and reduce the cost input; through the sealing action of the upper sealing piece of the output shaft and the lower sealing piece of the output shaft, a cavity is formed between the large end cover of the output shaft and the small end cover of the output shaft, lubricating grease is filled, the lubricating grease of the planetary reduction gearbox is effectively protected from being lost, meanwhile, the lubricating grease also has a good sealing effect, and mud is prevented from entering the sealing position of the shaft end, so that the service life of the planetary reduction gearbox is prolonged; a labyrinth seal is arranged at the joint of the large output shaft end cover and the small output shaft end cover, the reduction box end cover is in butt seal with the reduction box shell, and the large output shaft end cover is in butt seal with the reduction box shell to prevent silt from entering the reduction box; the planetary reduction gearbox of the vertical shaft planetary mixer has the advantages of reasonable structure, convenience in use, good sealing performance, long service life and the like, and effectively solves the problem of high production and maintenance cost of the planetary reduction gearbox of the common vertical shaft planetary mixer.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. The utility model provides a planet reducing gear box output shaft seal structure of integral type, characterized by: the output shaft (1) is a vertically arranged stepped shaft, and the output shaft (1) is sequentially provided with a first step (1-1), a second step (1-2), a third step (1-3), a fourth step (1-4) and a fifth step (1-5) from top to bottom;
the upper conical roller bearing (5) is arranged on the first step (1-1), the upper conical roller bearing (5) is connected with a bearing position on the speed reducer shell (12), and a speed reducer end cover (11) is arranged on the speed reducer shell (12) to seal the bearing position; the planetary gear (4) is connected and arranged on the second step (1-2) through a flat key (1-6), and the planetary gear (4) is in transmission connection with a speed reducer gear set; the lower tapered roller bearing (6) is arranged on the fifth step (1-5);
a bearing connecting hole (3-8) and an upper annular groove (3-4) are arranged on the central axis of the middle part of the large end cover (3) of the output shaft, wherein the bearing connecting hole (3-8) is connected with a lower tapered roller bearing (6), an upper sealing element (7) is arranged in the upper annular groove (3-4), and the upper sealing element (7) is in rotary sealing connection with the third step (1-3); the large output shaft end cover (3) is provided with a convex block (3-10), a through groove (3-1) communicated with a bearing connecting hole (3-8) is transversely formed in the convex block (3-10), a set screw (10) is arranged at one end, away from the bearing connecting hole (3-8), of the through groove (3-1) for sealing and locking, an oil filling hole (3-6) is vertically formed in the large output shaft end cover (3) from bottom to top and communicated with the through groove (3-1), and an oil nozzle (9) is arranged on the oil filling hole (3-6); the large end cover (3) of the output shaft is also provided with a first convex ring (3-7) and a large end cover connecting hole (3-5) at the opening edge of the bearing connecting hole (3-8), and a bolt is arranged in the large end cover connecting hole (3-5) and is fixedly connected with the speed reducer shell (12);
a lower annular groove (2-4) is formed in the small end cover (2) of the output shaft, a lower sealing element (8) is arranged in the lower annular groove (2-4), and the lower sealing element (8) is in rotary sealing connection with the fifth step (1-5); a second convex ring (2-1) is also arranged on the small end cover (2) of the output shaft, and the second convex ring (2-1) is sleeved into the first convex ring (3-7) to form labyrinth seal; the small end cover (2) of the output shaft is provided with a small end cover connecting hole (2-3), and the small end cover connecting hole (2-3) is fixedly connected with a connecting hole (3-9) on the large end cover (3) of the output shaft through a bolt.
2. The integrated planetary reduction gearbox output shaft sealing structure as set forth in claim 1, which is characterized in that: the reduction gearbox end cover (11) is of a circular structure, a third convex ring (11-3) is arranged on one surface, facing the output shaft (1), of the reduction gearbox end cover (11), the third convex ring (11-3) is abutted and sealed with the edge of an opening in the reduction gearbox shell (12), and the reduction gearbox end cover (11) is fixedly connected with the reduction gearbox shell (12) through a bolt arranged on a reduction gearbox end cover connecting hole (11-1).
3. The integrated planetary reduction gearbox output shaft sealing structure as set forth in claim 1, which is characterized in that: the connecting holes (3-9), the connecting holes (11-1) of the end cover of the reduction gearbox, the connecting holes (3-5) of the large end cover and the connecting holes (2-3) of the small end cover are all a plurality of connecting holes which are arranged around the output shaft (1) along a right circular track.
4. The integrated planetary reduction gearbox output shaft sealing structure as set forth in claim 1, which is characterized in that: and a notch (2-5) is arranged at the position on the small end cover (2) of the output shaft, which is aligned with the oil nozzle (9).
5. The integrated planetary reduction gearbox output shaft sealing structure as set forth in claim 1, which is characterized in that: the upper sealing piece (7) and the lower sealing piece (8) are both U-shaped sealing pieces, and the notches of the upper sealing piece (7) and the lower sealing piece (8) are arranged oppositely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020399423.6U CN212360733U (en) | 2020-03-25 | 2020-03-25 | Planet reducing gear box output shaft seal structure of integral type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020399423.6U CN212360733U (en) | 2020-03-25 | 2020-03-25 | Planet reducing gear box output shaft seal structure of integral type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212360733U true CN212360733U (en) | 2021-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020399423.6U Active CN212360733U (en) | 2020-03-25 | 2020-03-25 | Planet reducing gear box output shaft seal structure of integral type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212360733U (en) |
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2020
- 2020-03-25 CN CN202020399423.6U patent/CN212360733U/en active Active
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