CN205503934U - Oily seal structure of reduction gears - Google Patents
Oily seal structure of reduction gears Download PDFInfo
- Publication number
- CN205503934U CN205503934U CN201620158709.9U CN201620158709U CN205503934U CN 205503934 U CN205503934 U CN 205503934U CN 201620158709 U CN201620158709 U CN 201620158709U CN 205503934 U CN205503934 U CN 205503934U
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- China
- Prior art keywords
- sealing ring
- bearing
- rotating shaft
- housing
- axis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000007789 sealing Methods 0.000 claims abstract description 112
- 239000006071 cream Substances 0.000 claims description 18
- 238000009434 installation Methods 0.000 claims description 8
- 239000003921 oil Substances 0.000 description 39
- 239000010687 lubricating oil Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 9
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012938 design process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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- General Details Of Gearings (AREA)
- Sealing Of Bearings (AREA)
- Sealing Devices (AREA)
Abstract
Oily seal structure of reduction gears belongs to mechanical technical field. The not good problem of present reduction gears oil sealing performance has been solved to this structure. Oily seal structure of reduction gears, including the casing with lie in the pivot of casing, be equipped with bearing no. 1 and bearing no. 2 between casing and the pivot, between casing and pivot, bearing no. 1 and bearing form confined cavity no. 1 between two, be equipped with the reduction gear between casing and the pivot, is equipped with sealing washer no. 1 and sealing washer no. 2 between casing and the pivot, sealing washer no. 1 and sealing washer no. 2 lie in cavity no. 1, sealing washer no. 1 lies in between bearing no. 1 and the reduction gear, sealing washer no. 2 lies in between bearing no. 2 and the reduction gear, between casing and pivot, sealing washer no. 1 and sealing washer form confined oil storage chamber between two, the ware of inviting is located the oil storage intracavity. This oily seal structure of reduction gears through seal part's between casing and pivot setting, has improved the oil seal nature of arm.
Description
Technical field
This utility model belongs to field of mechanical technique, relates to the oil seal structure of a kind of reducing gear.
Background technology
There is inside existing mechanical arm decelerator, in the cavity at decelerator place, be marked with lubricating oil.In mechanical arm running, lubricating oil is susceptible to the situation of leakage.
Utility model content
This utility model is for above-mentioned problem, it is proposed that the oil seal structure of the preferable reducing gear of a kind of oil seal, and technical scheme is as follows:
The oil seal structure of reducing gear, including housing and the rotating shaft being positioned at housing, bearing one and bearing two it is provided with between described housing and rotating shaft, between housing and rotating shaft, between bearing one and bearing two, form the cavity one of closing, it is provided with decelerator between described housing and rotating shaft, sealing ring one and sealing ring two it is provided with between described housing and rotating shaft, sealing ring one and sealing ring two are positioned at cavity one, described sealing ring one is between bearing one and decelerator, and described sealing ring two is between bearing two and decelerator；Between housing and rotating shaft, forming the shoe cream room of closing between sealing ring one and sealing ring two, described decelerator is positioned at shoe cream room.
When having sealing structure to apply in mechanical arm of this reducing gear, during mechanical arm works, decelerator is also running, frictions between retarder operation and each parts etc. act on, temperature in shoe cream room is raised, causing the lubricating oil temperature being positioned at shoe cream room to raise, oil pressure becomes big.Although bearing one and bearing two also are able to lubricating oil is played sealing function, if but time oil pressure in shoe cream room is bigger, the sealing function less stable of bearing one and bearing two.In this sealing structure, bearing one and bearing two play sealing function between housing and rotating shaft；Additionally, sealing ring one and sealing ring two not only act as the effect of sealing lubricating oil in cavity one, but also play the effect reducing oil pressure, that is, even if having between bearing one and sealing ring one between lubricating oil, bearing two and sealing ring two and there is lubricating oil, becoming big oil pressure in shoe cream room will not directly or be difficult to be delivered at bearing one and bearing two so that the seal oil effect of mechanical arm is more preferable.
In the oil seal structure of above-mentioned reducing gear, described sealing ring one is set in rotating shaft, and sealing ring one abuts on the outer ring of housing or bearing one.
In the oil seal structure of above-mentioned reducing gear, described sealing ring one includes body one and is positioned at the portion that reclines of side of body one on shaft axis direction, body one and the portion one that reclines are for integral type structure, described recline portion one in the form of sheets, and be connected with body one near the side of sealing ring one axis in the portion one that reclines, described in the side away from sealing ring one axis that reclines in portion one abut on the outer ring of housing or bearing one.
In the oil seal structure of above-mentioned reducing gear, the described portion that reclines is obliquely installed relative to shaft axis, and in the portion one that reclines, side away from sealing ring one axis relatively reclines, and to hold one off axis near the side of sealing ring one axis in portion one near.When the oil pressure in shoe cream room increases, oil pressure acts in the portion of reclining, and owing to the portion of reclining is obliquely installed according to specific direction, oil pressure is the biggest, and the portion that reclines is on the tightest outer ring abutting in housing or bearing one, it is ensured that the oil sealing effect of mechanical arm.When common sealing ring is when sealing, and in sealing ring, outside needs certain pretightning force, bigger for the resistance produced in product rotation process；And in this configuration, the portion one that reclines has bigger deformation space, greatly reduce sealing ring one for resistance produced by housing or bearing one so that the rotation of mechanical arm is more smoothly.
In the oil seal structure of above-mentioned reducing gear, one end of described rotating shaft is positioned at outside housing, the other end of rotating shaft is positioned at housing, have in tubular on described housing or column and the supporting part coaxial with rotating shaft, described rotating shaft is tubular, and described support zone is in rotating shaft, and described bearing two is set on supporting part, described sealing ring two is set on supporting part, and sealing ring two abuts on the end of rotating shaft or the outer ring of bearing two.
In the oil seal structure of above-mentioned reducing gear, described sealing ring two includes body two and is positioned at the portion that reclines two of side of body two on shaft axis direction, body two and the portion two that reclines are for integral type structure, described recline portion two in the form of sheets, and be connected with body two near the side of sealing ring two axis in the portion two that reclines, described in the side away from sealing ring two axis that reclines in portion two abut on the end of rotating shaft or the outer ring of bearing two.In like manner, sealing ring two can preferably ensure the oil seal situation of mechanical arm.
In the oil seal structure of above-mentioned reducing gear, the described portion that reclines two is obliquely installed relative to shaft axis, and in the portion two that reclines, side away from sealing ring two axis relatively reclines, and to hold two off axis near the side of sealing ring two axis in portion two near.In the same old way, this structure makes the rotation of mechanical arm more smoothly.
In the oil seal structure of above-mentioned reducing gear, described decelerator is tubular, and rotating shaft is positioned at inside decelerator, and described bearing two is positioned at inside decelerator.Parts in the design process, are often taken up room and claim by mechanical arm, and bearing two is positioned at inside decelerator, the setting of this structure, effectively shorten housing length in rotating shaft circumferential direction so that the structure of mechanical arm is the compactest.
In the oil seal structure of above-mentioned reducing gear, described supporting part stretches out the other end of rotating shaft, and the end stretching out rotating shaft on supporting part has the installation portion for installing code-disc.Supporting part is so set so that be also convenient for the installation of code-disc while shell length is shorter.
The oil seal structure of this reducing gear, can be applicable in mechanical arm, it is possible to apply in other needs the frame for movement of gear reduction.
The oil seal structure of this reducing gear, by the setting of seal member between housing and rotating shaft, improves the oil seal of mechanical arm.
Accompanying drawing explanation
Fig. 1 is the sectional view of a kind of embodiment of oil seal structure；
Fig. 2 is the enlarged drawing in Fig. 1 at A；
Fig. 3 is the structural representation of cavity one；
Fig. 4 is the structural representation of shoe cream room；
Fig. 5 is the sectional view of oil seal structure another embodiment.
In figure, 1, housing；11, supporting part；12, installation portion；2, rotating shaft；3, bearing one；4, bearing two；5, cavity one；6, decelerator；7, sealing ring one；71, body one；72, recline portion one；8, sealing ring two；81, body two；82, recline portion two；9, shoe cream room.
Detailed description of the invention
As depicted in figs. 1 and 2, the oil seal structure of this reducing gear includes housing 1 and is positioned at the rotating shaft 2 of housing 1, is provided with bearing 1 and bearing 24 between housing 1 and rotating shaft 2.Bearing 1 and bearing 24 are sealing bearing.
As it is shown on figure 3, between housing 1 and rotating shaft 2, form the cavity 1 of closing between bearing 1 and bearing 24.
Being provided with decelerator 6 between housing 1 and rotating shaft 2, decelerator 6 selects harmonic speed reducer or planetary reducer or groups of reducers known to other.Being provided with sealing ring 1 and sealing ring 28, sealing ring 1 and sealing ring 28 between housing 1 and rotating shaft 2 and be positioned at cavity 1, sealing ring 1 is between bearing 1 and decelerator 6, and sealing ring 28 is between bearing 24 and decelerator 6.
As shown in Figure 4, between housing 1 and rotating shaft 2, forming the shoe cream room 9 of closing between sealing ring 1 and sealing ring 28, decelerator 6 is positioned at shoe cream room 9.
Sealing ring 1 is set in rotating shaft 2, and sealing ring 1 abuts on the outer ring of housing 1 or bearing 1.Bearing 1 and bearing 24 all include inner ring, the outer ring being set in outside inner ring and the ball between inner ring and outer ring.Certainly, bearing 1 and bearing 24 can be selected for rising the structure of phase same-action.
Concrete, sealing ring 1 includes body 1 and is positioned at the portion that reclines 1 of side of body 1 on rotating shaft 2 axis direction, body 1 and the portion 1 that reclines are for integral type structure, recline portion 1 in the form of sheets, and the side of close sealing ring 1 axis is connected with body 1 in the portion 1 that reclines, in the portion 1 that reclines, the side away from sealing ring 1 axis abuts on the outer ring of housing 1 or bearing 1.
As a kind of scheme, the portion that reclines is obliquely installed relative to rotating shaft 2 axis, and in the portion that reclines, side away from sealing ring 1 axis relatively reclines, and to hold one 3 off axis near the side of sealing ring 1 axis in portion near.When the oil pressure in shoe cream room 9 increases, oil pressure acts in the portion of reclining, and owing to the portion of reclining is obliquely installed according to specific direction, oil pressure is the biggest, and what the portion of reclining was the tightest abuts on the outer ring of housing 1 or bearing 1, it is ensured that the oil sealing effect of mechanical arm.
One end of rotating shaft 2 is positioned at outside housing 1, and the other end of rotating shaft 2 is positioned at housing 1.Have in tubular on housing 1 or column and the supporting part 11 coaxial with rotating shaft 2, rotating shaft 2 is in tubular, and supporting part 11 is positioned at rotating shaft 2, and bearing 24 is set on supporting part 11, sealing ring 28 is set on supporting part 11, and sealing ring 28 abuts on the end of rotating shaft 2 or the outer ring of bearing 24.
As a kind of scheme, the shape of sealing ring 1 is identical with the shape of sealing ring 28, and the size of sealing ring 1 and sealing ring 28, according to concrete application requirement, can do different selections.Sealing ring 28 includes body 2 81 and is positioned at the portion that reclines 2 82 of side of body 2 81 on rotating shaft 2 axis direction, body 2 81 and the portion 2 82 that reclines are for integral type structure, recline portion 2 82 in the form of sheets, and the side of close sealing ring 28 axis is connected with body 2 81 in the portion 2 82 that reclines, in the portion 2 82 that reclines, the side away from sealing ring 28 axis abuts on the end of rotating shaft 2 or the outer ring of bearing 24.In like manner, sealing ring 28 can preferably ensure the oil seal situation of mechanical arm.
Decelerator 6 is in tubular, and rotating shaft 2 is positioned at inside decelerator 6, and bearing 24 is positioned at inside decelerator 6.Bearing 24 is positioned at the meaning inside decelerator 6, decelerator 6 and bearing 24 radially partly overlapping or all overlapping at bearing 24, such arranges the length effectively shortening housing 1 in rotating shaft 2 circumferential direction so that the structure of mechanical arm is the compactest.As a kind of scheme, sealing ring 28 and bearing 24 are respectively positioned on inside decelerator 6, more shorten the length of housing 1.
Supporting part 11 stretches out and stretches out the end of rotating shaft 2 on the other end of rotating shaft 2, and supporting part 11 and have the installation portion 12 for installing code-disc.Supporting part 11 is so set so that be also convenient for the installation of code-disc while housing 1 length is shorter.
Alternatively, as it is shown in figure 5, supporting part 11 extends at bearing 24.During assembling, then the parts with installation portion 12 are loaded.The setting of this structure so that in the pre-assembly, has sealed reducing gear, during the parts with installation portion 12 assemble, is difficult to pollute reducing gear.
During mechanical arm works, decelerator 6 is also running, and decelerator 6 runs and the effect such as friction between each parts so that the temperature in shoe cream room 9 raises, and causes the lubricating oil temperature being positioned at shoe cream room 9 to raise, and oil pressure becomes big.Although bearing 1 and bearing 24 also are able to lubricating oil is played sealing function, if but time oil pressure in shoe cream room 9 is bigger, the sealing function less stable of bearing 1 and bearing 24.
In this sealing structure, bearing 1 and bearing 24 play sealing function between housing 1 and rotating shaft 2；Additionally, sealing ring 1 and sealing ring 28 not only act as the effect of sealing lubricating oil in cavity 1, but also play the effect reducing oil pressure, that is, even if having between bearing 1 and sealing ring 1 between lubricating oil, bearing 24 and sealing ring 28 and there is lubricating oil, becoming big oil pressure in shoe cream room 9 will not directly or be difficult to be delivered at bearing 1 and bearing 24 so that the seal oil effect of mechanical arm is more preferable.
Alternatively, seal structure and include sealing ring 1, do not include sealing ring 28；Or, seal structure and include sealing ring 28, do not include sealing ring 1.
Claims (10)
1. the oil seal structure of reducing gear, including housing (1) and the rotating shaft (2) that is positioned at housing (1), it is characterised in that institute
State and between housing (1) and rotating shaft (2), be provided with bearing one (3) and bearing two (4), between housing (1) and rotating shaft (2), bearing one (3)
And between bearing two (4), form the cavity one (5) of closing, and it is provided with decelerator (6) between described housing (1) and rotating shaft (2), described
It is provided with sealing ring one (7) and sealing ring two (8), sealing ring one (7) and sealing ring two (8) between housing (1) and rotating shaft (2) and is positioned at chamber
In body one (5), described sealing ring one (7) is positioned between bearing one (3) and decelerator (6), and described sealing ring two (8) is positioned at bearing two
(4) and between decelerator (6)；Formed between housing (1) and rotating shaft (2), between sealing ring one (7) and sealing ring two (8) and close
Shoe cream room (9), described decelerator (6) is positioned at shoe cream room (9).
The oil seal structure of reducing gear the most according to claim 1, it is characterised in that described sealing ring one (7) set
It is located in rotating shaft (2), and sealing ring one (7) abuts on the outer ring of housing (1) or bearing one (3).
The oil seal structure of reducing gear the most according to claim 2, it is characterised in that described sealing ring one (7) bag
Include body one (71) and on rotating shaft (2) axis direction, be positioned at the portion that reclines (72) of side of body one (71), body one (71)
Be integral type structure with the portion of reclining (72), described in recline portion one (72) in the form of sheets, and the portion one (72) of reclining is upper near sealing ring one
(7) side of axis is connected with body one (71), described in the side away from sealing ring one (7) axis that reclines in portion one (72) abut in
On the outer ring of housing (1) or bearing one (3).
The oil seal structure of reducing gear the most according to claim 3, it is characterised in that the described portion that reclines (72)
It is obliquely installed relative to rotating shaft (2) axis, and in the portion one (72) that reclines, side away from sealing ring one (7) axis relatively reclines portion one (72)
It is near that the upper side near sealing ring one (7) axis holds one (3) off axis.
The oil seal structure of reducing gear the most according to any one of claim 1 to 4, it is characterised in that described rotating shaft
(2) one end is positioned at housing (1) outward, and the other end of rotating shaft (2) is positioned at housing (1), described housing (1) has in tubular or
Column and the supporting part (11) coaxial with rotating shaft (2), described rotating shaft (2) is in tubular, and described supporting part (11) is positioned at rotating shaft (2)
In, described bearing two (4) is set on supporting part (11), and described sealing ring two (8) is set on supporting part (11), and seals
Circle two (8) abuts on the end of rotating shaft (2) or the outer ring of bearing two (4).
The oil seal structure of reducing gear the most according to claim 5, it is characterised in that described sealing ring two (8) bag
Include body two (81) and on rotating shaft (2) axis direction, be positioned at the portion that reclines two (82) of side of body two (81), body two (81)
Be integral type structure with the portion of reclining two (82), described in recline portion two (82) in the form of sheets, and the portion two (82) of reclining is upper near sealing ring two
(8) side of axis is connected with body two (81), described in the side away from sealing ring two (8) axis that reclines in portion two (82) abut in
On the end of rotating shaft (2) or the outer ring of bearing two (4).
The oil seal structure of reducing gear the most according to claim 6, it is characterised in that the described portion that reclines two (82)
It is obliquely installed relative to rotating shaft (2) axis, and in the portion two (82) that reclines, side away from sealing ring two (8) axis relatively reclines portion two (82)
It is near that the upper side near sealing ring two (8) axis holds two (4) off axis.
The oil seal structure of reducing gear the most according to claim 5, it is characterised in that described decelerator (6) is in cylinder
Shape rotating shaft (2) is positioned at decelerator (6) inner side, and described bearing two (4) is positioned at decelerator (6) inner side.
The oil seal structure of reducing gear the most according to claim 6, it is characterised in that described supporting part (11) stretches out
The end stretching out rotating shaft (2) on the other end of rotating shaft (2), and supporting part (11) has the installation portion (12) for installing code-disc.
The oil seal structure of reducing gear the most according to any one of claim 1 to 4, it is characterised in that described
Bearing one (3) and bearing two (4) are sealing bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620158709.9U CN205503934U (en) | 2016-03-02 | 2016-03-02 | Oily seal structure of reduction gears |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620158709.9U CN205503934U (en) | 2016-03-02 | 2016-03-02 | Oily seal structure of reduction gears |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205503934U true CN205503934U (en) | 2016-08-24 |
Family
ID=56727203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620158709.9U Expired - Fee Related CN205503934U (en) | 2016-03-02 | 2016-03-02 | Oily seal structure of reduction gears |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205503934U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546102A (en) * | 2016-03-02 | 2016-05-04 | 浙江琦星电子有限公司 | Oil seal structure for speed reducing mechanism |
-
2016
- 2016-03-02 CN CN201620158709.9U patent/CN205503934U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546102A (en) * | 2016-03-02 | 2016-05-04 | 浙江琦星电子有限公司 | Oil seal structure for speed reducing mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 317604 Nanyou Industrial Zone, Barley and Development Zone, Yuhuan County, Taizhou City, Zhejiang Province Patentee after: Qixing Intelligent Technology Co.,Ltd. Address before: 317604 Nanyou Industrial Zone, Barley and Development Zone, Yuhuan County, Taizhou City, Zhejiang Province Patentee before: ZHEJIANG QIXING ELECTRONICS Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |