CN206290679U - The sealing structure of reducing gear - Google Patents
The sealing structure of reducing gear Download PDFInfo
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- CN206290679U CN206290679U CN201621396403.3U CN201621396403U CN206290679U CN 206290679 U CN206290679 U CN 206290679U CN 201621396403 U CN201621396403 U CN 201621396403U CN 206290679 U CN206290679 U CN 206290679U
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Abstract
This application discloses the sealing structure of reducing gear, belong to reducing gear technical field.This sealing structure solves the structural unstable problem of original reducing gear.This sealing structure includes main shaft, main shaft is located in decelerator, decelerator is fixed with end cap one and end cap two annular in shape respectively along the both sides of main shaft axial direction, main shaft is located in end cap one and end cap two, the inner side of end cap one has step one annular in shape, and sealing ring one is provided between end cap one and main shaft, and sealing ring one is fixed at step one, the inner side of sealing ring one has sealing one annular in shape, and sealing one is resisted against on main shaft approximately along main shaft radial direction.Be set to along main shaft radially in the sealing direction of sealing ring one and sealing ring two by the sealing structure of this reducing gear, so that the structure of the sealing structure of reducing gear is more stable.
Description
Technical field
The utility model belongs to reducing gear technical field, is related to the sealing structure of reducing gear.
Background technology
Chinese invention patent (application publication number：CN105546102A, Shen Qing Publication day：20160504) one kind is disclosed to subtract
The oil seal structure of fast device, including housing and the rotating shaft in housing, are provided with bearing one and bearing two between housing and rotating shaft,
The cavity one of closing is formed between housing and rotating shaft, between bearing one and bearing two, decelerator is provided between housing and rotating shaft,
Sealing ring one and sealing ring two are provided between housing and rotating shaft, sealing ring one and sealing ring two are located in cavity one, sealing ring one
Between bearing one and decelerator, sealing ring two is located between bearing two and decelerator；Between housing and rotating shaft, sealing ring
The shoe cream room of closing is formed between one and sealing ring two, decelerator is located in shoe cream room.
In the sealing structure, due to the sealing direction of sealing ring be along rotating shaft axial direction, it is multiple and on rotating shaft axial direction
Parts are fixed together by assembling, also, there is error, Duo Geling in the processing of these parts and assembling process
The error combination of part forms an accumulated error together, and this accumulated error is excessive, can cause the resistance mistake of sealing ring
Big to cause decelerator moment larger or seal pressure is too small causes oil leak of reducer, its structure is more unstable.
Utility model content
According to problem above, the utility model proposes a kind of sealing structure of the relatively stable reducing gear of structure, its
Technical scheme is as follows：
The sealing structure of reducing gear, including main shaft, main shaft are located in decelerator, and the decelerator is along main shaft axial direction
Both sides are fixed with end cap one and end cap two annular in shape respectively, and main shaft is located in end cap one and end cap two, and its feature exists
In the inner side of described end cap one has step one annular in shape, and sealing ring one is provided between end cap one and main shaft, and described is close
Seal one is fixed at step one, and the inner side of the sealing ring one has the sealing one of sheet annular in shape, described sealing
One is resisted against on main shaft approximately along main shaft radial direction；The inner side of described end cap two has step two annular in shape, end cap two
Sealing ring two is provided with and main shaft between, described sealing ring two is fixed at step two, the inner side of the sealing ring two has and is in
The sealing two of ring-type sheet, described sealing two is resisted against on main shaft approximately along main shaft radial direction.
In the reducing gear course of work, main shaft is rotated in decelerator, and has lubricating oil in decelerator, sets master
Sealing ring one and sealing ring two between axle and end cap one and end cap two, by seal oil.It is close due in this sealing structure
Seal one is fixed at step one, and the sealing one of sealing ring one is radially against on main shaft along main shaft, therefore, with sealing ring one
The structure of contact is the external diameter at the internal diameter at step one and the main shaft contacted with sealing one, the position influence of sealing ring one
Factor is less so that the sealing function of sealing ring one by assembling and the accumulative factor of tolerance is influenceed less so that reducing gear
Sealing structure structure it is relatively stable, sealing effectiveness is preferable.Similarly, the reducing gear that the set-up mode of sealing ring two is also
The structure of sealing structure is relatively stable.
In the sealing structure of above-mentioned reducing gear, described sealing ring one includes fixed part one annular in shape, described
Sealing one be located at the inner side of fixed part one, is provided with support frame one in described fixed part one, fixed part one is fixed on step
At one；Described sealing ring two includes fixed part two annular in shape, and described sealing two is located at the inner side of fixed part two, described
Fixed part two in be provided with support frame two, fixed part two is fixed at step two.
Support frame one is set in the fixed part one of sealing ring one so that the structure of sealing ring one is relatively stable, not variable
Shape, so that the sealing effectiveness of sealing ring one is preferable；Meanwhile, the setting of support frame one also causes that sealing ring one is ensureing close
On the premise of the mechanical strength of seal one, small volume, so that sealing structure is more compact.The set-up mode of support frame two
Also there is similar effect.
In the sealing structure of above-mentioned reducing gear, there is first end and the second end on described sealing one, it is described
The second end of sealing one be resisted against on main shaft, and in spindle shaft upwards, the second end of sealing one compared with first end closer to
Medium position between sealing ring one and sealing ring two；There is the 3rd end and the 4th end, described is close on described sealing two
3rd end in envelope portion two is resisted against on main shaft, and, the 3rd end of sealing two is compared with the 4th end closer to sealing in spindle shaft upwards
Medium position between circle one and sealing ring two.
In spindle shaft upwards, the second end of sealing one compared with first end closer between sealing ring one and sealing ring two
The structure setting of portion position, when the oil pressure at decelerator is larger, can more drive sealing one to the Direction distortion near main shaft,
So that the oil pressure at decelerator is bigger, the sealing effectiveness of sealing ring one is more preferable.The setting of sealing two also has similar action.
In the sealing structure of above-mentioned reducing gear, the inner side of described end cap one also has step three annular in shape,
It is provided with bearing one between described end cap one and main shaft, the outer ring of described bearing one and inner ring are separately fixed at step three and main
It is integral type structure on axle, at the step one and step three on described end cap one, described bearing one is located at the He of sealing ring one
The outside of sealing ring two；The inner side of described end cap two also has step four annular in shape, between described end cap two and main shaft
It is provided with bearing two, the outer ring of described bearing two and inner ring are separately fixed on step four and main shaft, on described end cap two
Step two and step are everywhere integral type structure, and described bearing two is located at the outside of sealing ring one and sealing ring two.
Bearing one is arranged on the outside of sealing ring one and sealing ring two so that the lubricating oil at decelerator is to sealing ring one
The lubricant effect of upper sealing one is preferable.In addition, being integral type structure at step one and step three on end cap one, it is easy to improve
Machining accuracy at step one and step three so that the set location of bearing one and sealing ring one is more accurate.
According to the purpose of this utility model, the utility model also proposed a kind of sealing structure of reducing gear, its technology
Scheme is as follows：
The sealing structure of reducing gear, including main shaft, main shaft are located in decelerator, and the decelerator is along main shaft axial direction
Both sides are fixed with end cap one and end cap two annular in shape respectively, and main shaft is located in end cap one and end cap two, and its feature exists
In, there is step five annular in shape on described main shaft, sealing ring one, described sealing ring one are provided between end cap one and main shaft
Be fixed at step five, the outside of the sealing ring one has a sealing one of sheet annular in shape, described sealing one against
On the madial wall of end cap one；Also there is step six annular in shape on described main shaft, sealing is provided between end cap two and main shaft
Circle two, described sealing ring two is fixed at step six, and the outside of the sealing ring two has the sealing two of sheet annular in shape,
Described sealing two is resisted against on the madial wall of end cap two.
In the sealing structure of above-mentioned reducing gear, described sealing ring one includes fixed part one annular in shape, described
Sealing one be located at the outside of fixed part one, is provided with support frame one in described fixed part one, fixed part one is fixed on step
At five；Described sealing ring two includes fixed part two annular in shape, and described sealing two is located at the outside of fixed part two, described
Fixed part two in be provided with support frame two, fixed part two is fixed at step six.
In the sealing structure of above-mentioned reducing gear, there is first end and the second end on described sealing one, it is described
The second end of sealing one be resisted against on the madial wall of end cap one, and in spindle shaft upwards, the second end of sealing one is compared with the
One end is closer to the medium position between sealing ring one and sealing ring two；There is the 3rd end and the 4th on described sealing two
End, the 3rd end of described sealing two is resisted against on the madial wall of end cap two, and, the 3rd of sealing two the. in spindle shaft upwards
End is compared with the 4th end closer to the medium position between sealing ring one and sealing ring two.
In the sealing structure of above-mentioned reducing gear, the inner side of described end cap one also has step three annular in shape,
It is provided with bearing one between described end cap one and main shaft, the outer ring of described bearing one and inner ring are separately fixed at step three and main
On axle, described bearing one is located at the outside of sealing ring one and sealing ring two；The inner side of described end cap two also has annular in shape
Step four, be provided with bearing two between described end cap two and main shaft, the outer ring of described bearing two and inner ring are separately fixed at
On step four and main shaft, described bearing two is located at the outside of sealing ring one and sealing ring two.
Compared with prior art, the sealing structure of this reducing gear sets the sealing direction of sealing ring one and sealing ring two
Be along main shaft radially so that sealing ring one and sealing ring two are influenceed smaller by component tolerances are accumulative, so that reducing gear
Sealing structure structure it is more stable.
Brief description of the drawings
Fig. 1 is a kind of structural representation of embodiment of sealing structure of reducing gear；
Fig. 2 is the enlarged drawing at A in Fig. 1；
Fig. 3 is the enlarged drawing at B in Fig. 1；
Fig. 4 is the structural representation at end cap one；
Fig. 5 is the structural representation at end cap two；
Fig. 6 is the structural representation of another embodiment of sealing structure of reducing gear；
Fig. 7 is the enlarged drawing at C in Fig. 3；
Fig. 8 is the enlarged drawing at D in Fig. 3；
Fig. 9 is the structural representation at step five；
Figure 10 is the structural representation at step six；
In figure, 1, main shaft；11st, step five；12nd, step six；2nd, decelerator；3rd, end cap one；31st, step one；32nd, step
Three；4th, end cap two；41st, step two；42nd, step four；5th, sealing ring one；51st, sealing one；52nd, fixed part one；53rd, support frame
One；54th, first end；55th, the second end；6th, sealing ring two；61st, sealing two；62nd, fixed part two；64th, support frame two；65th, the 3rd
End；66th, the 4th end；7th, bearing one；8th, bearing two.
Specific embodiment
Embodiment one
As shown in figure 1, the sealing structure of reducing gear includes main shaft 1, main shaft 1 is located in decelerator 2.The edge of decelerator 2
The both sides of the axial direction of main shaft 1 are fixed with end cap 1 and end cap 24 annular in shape respectively, and main shaft 1 is located in end cap 1 and end
In lid 24.
As shown in Figure 4 and Figure 5, the inner side of end cap 1 has step 1 annular in shape, is set between end cap 1 and main shaft 1
There is sealing ring 1, sealing ring 1 is fixed at step 1.The inner side of end cap 24 has step 2 41 annular in shape, end cap
Sealing ring 26 is provided between 24 and main shaft 1, sealing ring 26 is fixed at step 2 41.
Specifically, as shown in Fig. 2 sealing ring 1 includes being provided with support in fixed part 1 annular in shape, fixed part 1
Frame 1, fixed part 1 is fixed at step 1.The inner side of fixed part 1 has the sealing 1 of sheet annular in shape,
Sealing 1 is resisted against on main shaft 1 approximately along the radial direction of main shaft 1.There is the end of first end 54 and second on sealing 1
55, the first end 54 of sealing 1 is connected with fixed part, and the second end 55 of sealing 1 is resisted against on main shaft 1, and in master
On the axial direction of axle 1, the second end 55 of sealing 1 is compared with first end 54 closer to the middle part between sealing ring 1 and sealing ring 26
Position.
As shown in figure 3, sealing ring 26 includes being provided with support frame 2 64 in fixed part 2 62 annular in shape, fixed part 2 62,
Fixed part 2 62 is fixed at step 2 41.The sealing 2 61 of sheet annular in shape is located at the inner side of fixed part 2 62, sealing
2 61 are resisted against on main shaft 1 approximately along the radial direction of main shaft 1.There is the 3rd end 65 and the 4th end 66, sealing on sealing 2 61
3rd end 65 in portion 2 61 is resisted against on main shaft 1, and the 4th end 66 of sealing 2 61 is connected with fixed part 2 62, and in main shaft 1
On axial direction, the 3rd end 65 of sealing 2 61 is compared with the 4th end 66 closer to the middle position between sealing ring 1 and sealing ring 26
Put.
Support frame 1 is set in the fixed part 1 of sealing ring 1 so that the structure of sealing ring 1 is relatively stable,
It is unlikely to deform, so that the sealing effectiveness of sealing ring 1 is preferable；Meanwhile, the setting of support frame 1 also causes sealing ring one
5 on the premise of the mechanical strength of sealing ring 1 is ensured, small volume, so that sealing structure is more compact.Support frame two
64 set-up mode also has similar effect.
On the axial direction of main shaft 1, the second end 55 of sealing 1 is compared with first end 54 closer to sealing ring 1 and sealing ring two
The structure setting of the medium position between 6, when the oil pressure at decelerator 2 is larger, can more drive sealing 1 near master
The Direction distortion of axle 1 so that the oil pressure at decelerator 2 is bigger, the sealing effectiveness of sealing ring 1 is more preferable.Sealing 2 61 sets
Putting also has similar action.
The inner side of end cap 1 also has step 3 32 annular in shape, and bearing 1, axle are provided between end cap 1 and main shaft 1
The outer ring and inner ring for holding 1 are separately fixed on step 3 32 and main shaft 1, at the step 1 and step 3 32 on end cap 1
It is integral type structure, bearing 1 is located at the outside of sealing ring 1 and sealing ring 26；The inner side of end cap 24 also has annular in shape
Step 4 42, bearing 28 is provided between end cap 24 and main shaft 1, the outer ring of bearing 28 and inner ring are separately fixed at step four
42 and main shaft 1 on, at the step 2 41 and step 4 42 on end cap 24 be integral type structure, bearing 28 be located at sealing ring 1
With the outside of sealing ring 26.
Bearing 1 is arranged on the outside of sealing ring 1 and sealing ring 26 so that the lubricating oil at decelerator 2 is to sealing
The lubricant effect for enclosing sealing 1 on one 5 is preferable.In addition, being integral type at step 1 and step 3 32 on end cap 1
Structure, is easy to improve the machining accuracy at step 1 and step 3 32 so that the set location of bearing 1 and sealing ring 1
It is more accurate.
In the reducing gear course of work, main shaft 1 is rotated in decelerator 2, and has lubricating oil in decelerator 2, if
The sealing ring 1 and sealing ring 26 between main shaft 1 and end cap 1 and end cap 24 are put, by seal oil.Due in this sealing
In structure, sealing ring 1 is fixed at step 1, and the sealing 1 of sealing ring 1 is radially against main shaft 1 along main shaft 1
On, therefore, the structure contacted with sealing ring 1 is at internal diameter and the main shaft 1 that is contacted with sealing 1 at step 1
External diameter, the position influence factor of sealing ring 1 is less so that the sealing function of sealing ring 1 assembled and tolerance it is accumulative because
Element influence is less, so that the structure of the sealing structure of reducing gear is relatively stable, sealing effectiveness is preferable.Similarly, sealing ring
The structure of the sealing structure of the reducing gear that 26 set-up mode is also is relatively stable.
Embodiment two
The present embodiment is roughly the same with embodiment one, and different places are, in the present embodiment, as illustrated in figures 6-10,
There is step 5 11 annular in shape on main shaft 1, sealing ring 1, the fixed part of sealing ring 1 are provided between end cap 1 and main shaft 1
One 52 are fixed at step 5 11.Sealing 1 is located at the outside of fixed part 1, and sealing 1 is resisted against end cap 1
Madial wall on.Also there is step 6 12 annular in shape on main shaft 1, sealing ring 26 is provided between end cap 24 and main shaft 1, seal
The fixed part 2 62 for enclosing 26 is fixed at step 6 12.Sealing 2 61 is located at the outside of fixed part 2 62, and sealing 2 61 is supported
Lean against on the madial wall of end cap 24.
In addition, having the end 55 of first end 54 and second on sealing 1, the second end 55 of sealing 1 is resisted against end
On the madial wall of lid 1, and on the axial direction of main shaft 1, the second end 55 of sealing 1 is compared with first end 54 closer to sealing ring 1
And the medium position between sealing ring 26；There is the 3rd end 65 and the 4th end 66, the 3rd of sealing 2 61 the on sealing 2 61
End 65 is resisted against on the madial wall of end cap 24, and on the axial direction of main shaft 1, the 3rd end 65 of sealing 2 61 is compared with the 4th end 66 more
Near the medium position between sealing ring 1 and sealing ring 26.
Claims (8)
1. the sealing structure of reducing gear, including main shaft (1), main shaft (1) is located in decelerator (2), decelerator (2) edge
The both sides of main shaft (1) axial direction are fixed with end cap one (3) and end cap two (4) annular in shape respectively, and main shaft (1) is located in end cap
One (3) and end cap two (4) in, it is characterised in that the inner side of described end cap one (3) has step one (31) annular in shape, end
Sealing ring one (5) is provided between lid one (3) and main shaft (1), described sealing ring one (5) is fixed on the place of step one (31), described
The inner side of sealing ring one (5) has the sealing one (51) of sheet annular in shape, and described sealing one (51) is approximately along main shaft (1)
Radial direction is resisted against on main shaft (1)；The inner side of described end cap two (4) has step two (41) annular in shape, end cap two (4)
Sealing ring two (6) is provided with and main shaft (1) between, described sealing ring two (6) is fixed on the place of step two (41), the sealing ring two
(6) inner side has the sealing two (61) of sheet annular in shape, and described sealing two (61) is approximately along main shaft (1) radial direction
It is resisted against on main shaft (1).
2. the sealing structure of reducing gear according to claim 1, it is characterised in that described sealing ring one (5) includes
Fixed part one (52) annular in shape, described sealing one (51) is positioned at the inner side of fixed part one (52), described fixed part one
(52) support frame one (53) is provided with, fixed part one (52) is fixed on the place of step one (31)；Described sealing ring two (6) is including being in
The fixed part two (62) of ring-type, described sealing two (61) is positioned at the inner side of fixed part two (62), described fixed part two
(62) support frame two (64) is provided with, fixed part two (62) is fixed on the place of step two (41).
3. the sealing structure of reducing gear according to claim 2, it is characterised in that have on described sealing one (51)
The second end (55) for having first end (54) and the second end (55), described sealing one (51) is resisted against on main shaft (1), and in master
On axle (1) axial direction, second end (55) of sealing one (51) is compared with first end (54) closer to sealing ring one (5) and sealing ring two
(6) medium position between；There is the 3rd end (65) and the 4th end (66), described sealing on described sealing two (61)
Two (61) the 3rd end (65) is resisted against on main shaft (1), and on main shaft (1) axial direction, the 3rd end (65) of sealing two (61)
Compared with the 4th end (66) closer to the medium position between sealing ring one (5) and sealing ring two (6).
4. the sealing structure of the reducing gear according to claim 1 or 2 or 3, it is characterised in that described end cap one (3)
Inner side also have step three (32) annular in shape, bearing one (7) is provided between described end cap one (3) and main shaft (1), it is described
Bearing one (7) outer ring and inner ring be separately fixed on step three (32) and main shaft (1), the platform on described end cap one (3)
Rank one (31) and the place of step three (32) are integral type structure, and described bearing one (7) is positioned at sealing ring one (5) and sealing ring two
(6) outside；The inner side of described end cap two (4) also has step four (42) annular in shape, described end cap two (4) and main shaft
(1) it is provided with bearing two (8) between, the outer ring of described bearing two (8) and inner ring are separately fixed at step four (42) and main shaft (1)
On, step two (41) and the place of step four (42) on described end cap two (4) they are integral type structure, the described position of bearing two (8)
In sealing ring one (5) and the outside of sealing ring two (6).
5. the sealing structure of reducing gear, including main shaft (1), main shaft (1) is located in decelerator (2), decelerator (2) edge
The both sides of main shaft (1) axial direction are fixed with end cap one (3) and end cap two (4) annular in shape respectively, and main shaft (1) is located in end cap
One (3) and end cap two (4) in, it is characterised in that on described main shaft (1) have step five (11) annular in shape, end cap one (3)
Sealing ring one (5) is provided with and main shaft (1) between, described sealing ring one (5) is fixed on the place of step five (11), the sealing ring one
(5) outside has the sealing one (51) of sheet annular in shape, and described sealing one (51) is resisted against the inner side of end cap one (3)
On wall；Also there is step six (12) annular in shape on described main shaft (1), sealing ring is provided between end cap two (4) and main shaft (1)
Two (6), described sealing ring two (6) is fixed on the place of step six (12), and the outside of the sealing ring two (6) has sheet annular in shape
Sealing two (61), described sealing two (61) is resisted against on the madial wall of end cap two (4).
6. the sealing structure of reducing gear according to claim 5, it is characterised in that described sealing ring one (5) includes
Fixed part one (52) annular in shape, described sealing one (51) is positioned at the outside of fixed part one (52), described fixed part one
(52) support frame one (53) is provided with, fixed part one (52) is fixed on the place of step five (11)；Described sealing ring two (6) is including being in
The fixed part two (62) of ring-type, described sealing two (61) is positioned at the outside of fixed part two (62), described fixed part two
(62) support frame two (64) is provided with, fixed part two (62) is fixed on the place of step six (12).
7. the sealing structure of reducing gear according to claim 6, it is characterised in that have on described sealing one (51)
The second end (55) for having first end (54) and the second end (55), described sealing one (51) is resisted against the inner side of end cap one (3)
On wall, and on main shaft (1) axial direction, second end (55) of sealing one (51) is compared with first end (54) closer to sealing ring one (5)
And the medium position between sealing ring two (6)；There is the 3rd end (65) and the 4th end (66), institute on described sealing two (61)
3rd end (65) of the sealing two (61) stated is resisted against on the madial wall of end cap two (4), and on main shaft (1) axial direction, sealing
3rd end (65) in portion two (61) is compared with the 4th end (66) closer to the medium position between sealing ring one (5) and sealing ring two (6).
8. the sealing structure of the reducing gear according to claim 5 or 6 or 7, it is characterised in that described end cap one (3)
Inner side also have step three (32) annular in shape, bearing one (7) is provided between described end cap one (3) and main shaft (1), it is described
Bearing one (7) outer ring and inner ring be separately fixed on step three (32) and main shaft (1), described bearing one (7) is positioned at close
Seal one (5) and the outside of sealing ring two (6)；The inner side of described end cap two (4) also has step four (42) annular in shape, institute
It is provided with bearing two (8) between the end cap two (4) and main shaft (1) stated, the outer ring of described bearing two (8) and inner ring are separately fixed at
On step four (42) and main shaft (1), described bearing two (8) is positioned at sealing ring one (5) and the outside of sealing ring two (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621396403.3U CN206290679U (en) | 2016-12-19 | 2016-12-19 | The sealing structure of reducing gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621396403.3U CN206290679U (en) | 2016-12-19 | 2016-12-19 | The sealing structure of reducing gear |
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| Publication Number | Publication Date |
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| CN206290679U true CN206290679U (en) | 2017-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621396403.3U Active CN206290679U (en) | 2016-12-19 | 2016-12-19 | The sealing structure of reducing gear |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733128A (en) * | 2017-11-23 | 2018-02-23 | 东风汽车股份有限公司 | Sealing structure of driving motor of electric automobile |
| CN110878829A (en) * | 2019-11-29 | 2020-03-13 | 深圳市山卓谐波传动科技有限公司 | Sealing structure and speed reducer |
-
2016
- 2016-12-19 CN CN201621396403.3U patent/CN206290679U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733128A (en) * | 2017-11-23 | 2018-02-23 | 东风汽车股份有限公司 | Sealing structure of driving motor of electric automobile |
| CN110878829A (en) * | 2019-11-29 | 2020-03-13 | 深圳市山卓谐波传动科技有限公司 | Sealing structure and speed reducer |
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