CN212804151U - Shaft end sealing structure of speed reducer - Google Patents
Shaft end sealing structure of speed reducer Download PDFInfo
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- CN212804151U CN212804151U CN202021826332.2U CN202021826332U CN212804151U CN 212804151 U CN212804151 U CN 212804151U CN 202021826332 U CN202021826332 U CN 202021826332U CN 212804151 U CN212804151 U CN 212804151U
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Abstract
The utility model relates to a speed reducer axle head seal structure belongs to speed reducer axle head sealing technique field. The technical scheme is as follows: the bearing gland (7) is provided with a circular ring-shaped oil storage groove (9), the circular ring radius of the oil storage groove (9) is larger than or equal to the radius of the oil thrower (4), the box body (8) is provided with an oil return channel (12), and the oil return channel (12) communicates the gap space (13) with the interior of the box body (8); the outer side wall of the oil storage ditch (9) is formed by combining an arc transition section (10), a horizontal section (11) and a vertical section (14). The utility model has the advantages that: the oil splashing lubrication is blocked and dredged, oil leakage and seepage are avoided, the reliability of the speed reducer is improved, the maintenance cost of equipment is reduced, and the normal production is ensured.
Description
Technical Field
The utility model relates to a speed reducer axle head seal structure belongs to speed reducer axle head sealing technique field.
Background
At present, the speed reducer industry in China is rapidly developed, and the demand is increasingly increased. The sealing measures usually adopted at the shaft end of the speed reducer comprise: oil seal, oil deflector ring and shaft end cap seal, etc. the end cap seal usually adopts rotary lip-shaped skeleton (or J-shaped skeleton-free) rubber seal ring. Because the speed reducer is in splash lubrication, lubricating oil is driven to splash to parts such as bearings needing lubrication through long-term high-speed rotation of a shaft of the speed reducer, but the high-speed rotation temperature of the shaft of the speed reducer is increased, so that sealing aging and hardening are caused, although oil throwers block the oil throwers, oil still seeps out from gaps of various parts, oil leakage and oil seepage are serious, the pollution to the surrounding environment is caused, the normal operation of production is seriously influenced, and the maintenance cost of equipment is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a speed reducer axle head seal structure blocks to the lubricated machine oil that splashes and dredges, avoids oil leak and infiltration, improves the reliability of speed reducer, reduces the cost of maintenance of equipment, guarantees the normal clear of production, solves the problem that exists among the background art.
The technical scheme of the utility model is that:
a shaft end sealing structure of a speed reducer comprises an output shaft, a labyrinth sealing end cover, a sealing felt, an oil thrower, a self-aligning bearing, a bearing gland and a box body; the output shaft is positioned in the box body, the end part of the output shaft is provided with a self-aligning bearing, the output shaft outside the self-aligning bearing is provided with an oil thrower, a bearing gland is arranged outside the oil thrower, the bearing gland is fixed on the box body through a gland bolt, and the oil thrower is positioned in a gap space between the self-aligning bearing and the bearing gland; a sealing felt is arranged between the output shaft and the bearing gland, and a labyrinth sealing end cover is arranged outside the sealing felt; the bearing gland is provided with a circular ring-shaped oil storage groove, the circular ring radius of the oil storage groove is larger than or equal to the radius of the oil throwing disc, the box body is provided with an oil return channel, and the oil return channel communicates the gap space with the interior of the box body; the outer side wall of the oil storage ditch is formed by combining an arc transition section, a horizontal section and a vertical section, the arc transition section is close to the bottom of the oil storage ditch, the arc transition section is smoothly connected with one end of the horizontal section, the other end of the horizontal section is connected with the vertical section, the horizontal section and the vertical section are arranged vertically to each other, and the vertical section and the central axis of the output shaft are arranged in parallel; the oil storage groove, the oil thrower disc, the self-aligning bearing and the bearing gland are coaxially arranged by taking the output shaft as the center.
Its inside wall of oil storage ditch is the slope section, and the one end that the slope section is located the oil storage ditch bottom is to the inboard slope, and the slope section other end leans out.
The inside wall of the oil storage groove is the inner diameter of a circular ring, the outside wall of the oil storage groove is the outer diameter of the circular ring, the inner diameter of the circular ring is equal to the outer diameter of the oil thrower, and the outer diameter of the circular ring is larger than the outer diameter of the oil thrower.
One end of the oil return channel on the box body is positioned in the box body, and the other end of the oil return channel is positioned on the outer side of the oil storage groove on the bearing gland and is close to the outer end part of the bearing gland.
Because the inside wall of oil storage ditch is the slope section, the leanin is arranged, the outside wall of oil storage ditch is the circular arc changeover portion, horizontal segment and vertical section combination, the oil that the oil throwing away of disc gets into in the oil storage ditch, the slope section prevents to spill over to the axle head direction, through the circular arc changeover portion, horizontal segment and vertical section combination flow in the gap space between aligning bearing and the bearing gland, get back to the box smoothly through oil return channel, though probably there is few partial lubricating oil to spill over to the axle head, can prevent through sealed felt, labyrinth seal end cover can prevent outside dust to get into inside the speed reducer.
The utility model has the advantages that: the oil splashing lubrication is blocked and dredged, oil leakage and seepage are avoided, the reliability of the speed reducer is improved, the maintenance cost of equipment is reduced, and the normal production is ensured.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of the bearing cover of the present invention;
FIG. 3 is a schematic sectional view of the bearing cover A-A of the present invention;
in the figure: the oil thrower comprises an output shaft 1, a labyrinth seal end cover 2, a seal felt 3, an oil thrower disc 4, a self-aligning bearing 5, a gland bolt 6, a bearing gland 7, a box body 8, an oil storage groove 9, an arc transition section 10, a horizontal section 11, an oil return channel 12, a gap space 13, a vertical section 14 and an inclined section 15.
Detailed Description
The present invention will be further described with reference to the accompanying drawings by way of examples.
A shaft end sealing structure of a speed reducer comprises an output shaft 1, a labyrinth sealing end cover 2, a sealing felt 3, an oil thrower 4, a self-aligning bearing 5, a bearing gland 7 and a box body 8; the output shaft 1 is positioned in the box body 8, the end part of the output shaft 1 is provided with a self-aligning bearing 5, the output shaft 1 outside the self-aligning bearing 5 is provided with an oil thrower 4, a bearing gland 7 is arranged outside the oil thrower 4, the bearing gland 7 is fixed on the box body 8 through a gland bolt 6, and the oil thrower 4 is positioned in a gap space 13 between the self-aligning bearing 5 and the bearing gland 7; a sealing felt 3 is arranged between the output shaft 1 and the bearing gland 7, and a labyrinth sealing end cover 2 is arranged outside the sealing felt 3; the bearing gland 7 is provided with an annular oil storage groove 9, the radius of the annular ring of the oil storage groove 9 is larger than or equal to that of the oil thrower 4, the box body 8 is provided with an oil return channel 12, and the oil return channel 12 communicates the gap space 13 with the interior of the box body 8; the outer side wall of the oil storage ditch 9 is formed by combining an arc transition section 10, a horizontal section 11 and a vertical section 14, the arc transition section 10 is close to the bottom of the oil storage ditch 9, the arc transition section 10 is smoothly connected with one end of the horizontal section 11, the other end of the horizontal section 11 is connected with the vertical section 14, the horizontal section 11 and the vertical section 14 are arranged in a mutually perpendicular mode, and the vertical section 14 and the central axis of the output shaft 1 are arranged in parallel; the oil storage groove 9, the oil thrower 4, the self-aligning bearing 5 and the bearing gland 7 are coaxially arranged by taking the output shaft 1 as the center.
Its inside wall of oil storage ditch 9 is slope section 15, and the one end that slope section 15 is located the oil storage ditch 9 bottom is to the inboard slope, and the slope section 15 other end leans out.
The inner side wall of the oil storage groove 9 is the inner diameter of a circular ring, the outer side wall of the oil storage groove is the outer diameter of the circular ring, the inner diameter of the circular ring is equal to the outer diameter of the oil thrower 4, and the outer diameter of the circular ring is larger than the outer diameter of the oil thrower 4.
One end of an oil return channel 12 on the box body 8 is positioned in the box body 8, and the other end of the oil return channel is positioned on the outer side of the oil storage groove 9 on the bearing gland 7 and is close to the outer end part of the bearing gland 7.
Because the inside wall of oil storage ditch 9 is slope section 15, the inside slope is arranged, the outside wall of oil storage ditch 9 is circular arc changeover portion 10, horizontal segment 11 and vertical section 14 combination, the oil that oil throws away 4 of disc gets into in the oil storage ditch 9, slope section 15 prevents to spill over to the axle head direction, through circular arc changeover portion 10, horizontal segment 11 and vertical section 14 combination flow in the gap space 13 between self-aligning bearing 5 and the bearing gland 7, get back to in the box 8 smoothly through oil return channel 12, perhaps there is little partial lubricating oil to spill over to the axle head, can prevent through sealed felt 3, labyrinth seal end cover 2 can prevent outside dust to get into inside the speed reducer.
In the embodiment, the sealing felt 3 is two groups.
Claims (4)
1. The utility model provides a speed reducer axle head seal structure which characterized in that: the oil thrower comprises an output shaft (1), a labyrinth seal end cover (2), a seal felt (3), an oil thrower disc (4), a self-aligning bearing (5), a bearing gland (7) and a box body (8); the output shaft (1) is positioned in the box body (8), the end part of the output shaft (1) is provided with a self-aligning bearing (5), the output shaft (1) outside the self-aligning bearing (5) is provided with an oil thrower (4), a bearing gland (7) is arranged outside the oil thrower (4), the bearing gland (7) is fixed on the box body (8) through a gland bolt (6), and the oil thrower (4) is positioned in a gap space (13) between the self-aligning bearing (5) and the bearing gland (7); a sealing felt (3) is arranged between the output shaft (1) and the bearing gland (7), and a labyrinth sealing end cover (2) is arranged outside the sealing felt (3); the bearing gland (7) is provided with a circular ring-shaped oil storage groove (9), the circular ring radius of the oil storage groove (9) is larger than or equal to the radius of the oil thrower (4), the box body (8) is provided with an oil return channel (12), and the oil return channel (12) communicates the gap space (13) with the interior of the box body (8); the outer side wall of the oil storage ditch (9) is formed by combining an arc transition section (10), a horizontal section (11) and a vertical section (14), the arc transition section (10) is close to the bottom of the oil storage ditch (9), the arc transition section (10) is smoothly connected with one end of the horizontal section (11), the other end of the horizontal section (11) is connected with the vertical section (14), the horizontal section (11) and the vertical section (14) are mutually and vertically arranged, and the vertical section (14) and the central axis of the output shaft (1) are arranged in parallel; the oil storage groove (9), the oil thrower (4), the self-aligning bearing (5) and the bearing gland (7) are coaxially arranged by taking the output shaft (1) as the center.
2. The reducer shaft end sealing structure according to claim 1, characterized in that: the inner side wall of the oil storage ditch (9) is an inclined section (15), one end of the inclined section (15) at the bottom of the oil storage ditch (9) inclines inwards, and the other end of the inclined section (15) inclines outwards.
3. The reducer shaft end sealing structure according to claim 1 or 2, characterized in that: the inner side wall of the oil storage groove (9) is the inner diameter of a circular ring, the outer side wall of the oil storage groove is the outer diameter of the circular ring, the inner diameter of the circular ring is equal to the outer diameter of the oil thrower (4), and the outer diameter of the circular ring is larger than the outer diameter of the oil thrower (4).
4. The reducer shaft end sealing structure according to claim 1 or 2, characterized in that: one end of an oil return channel (12) on the box body (8) is positioned in the box body (8), and the other end of the oil return channel is positioned on the outer side of the oil storage groove (9) on the bearing gland (7) and is close to the outer end part of the bearing gland (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021826332.2U CN212804151U (en) | 2020-08-27 | 2020-08-27 | Shaft end sealing structure of speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021826332.2U CN212804151U (en) | 2020-08-27 | 2020-08-27 | Shaft end sealing structure of speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212804151U true CN212804151U (en) | 2021-03-26 |
Family
ID=75087657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021826332.2U Active CN212804151U (en) | 2020-08-27 | 2020-08-27 | Shaft end sealing structure of speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212804151U (en) |
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2020
- 2020-08-27 CN CN202021826332.2U patent/CN212804151U/en active Active
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