CN209294340U - A kind of planar double-enveloping wormwheel pair - Google Patents
A kind of planar double-enveloping wormwheel pair Download PDFInfo
- Publication number
- CN209294340U CN209294340U CN201821843635.8U CN201821843635U CN209294340U CN 209294340 U CN209294340 U CN 209294340U CN 201821843635 U CN201821843635 U CN 201821843635U CN 209294340 U CN209294340 U CN 209294340U
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- China
- Prior art keywords
- worm gear
- periphery
- planar
- cylinder roller
- enveloping
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Abstract
The utility model discloses a kind of planar double-enveloping wormwheel pairs, including the worm gear and planar double-enveloping worm being meshed, are provided with three-row cylinder roller bearing in the inner hole of worm gear.Since three-row cylinder roller bearing can bear axial load, radial load and tilting moment simultaneously, therefore, three-row cylinder roller bearing is set in the worm gear of planar double-enveloping wormwheel pair, so that the utility model has while bearing the performance of axial load, radial load and tilting moment.
Description
Technical field
The utility model belongs to technical field of bearings more particularly to a kind of planar double-enveloping wormwheel pair.
Background technique
Worm-drive is widely used in the fields such as metallurgy, ship, building machinery, big, stable drive, noise with transmission ratio
The features such as low.Most important feature is that have the function of reverse self-locking, and have biggish speed ratio, worm gear compared to other kinds of drive
The input of worm screw, output shaft not on the same axis, or even not in the same plane.The transmission of planar double-enveloping wormwheel pair is not
It is same as conventional worm worm-drive, it is transformed into two times by planar envelope primary line, the contact line compared with common worm-drive
It is more, it is easier to oil film is generated, sufficiently, the service life is longer, and transmission efficiency is higher for lubrication, and typically larger than 80%, most important spy
Point is that instantaneous multiple tooth contact bearing capacity is bigger.
Currently, bearing usually used in the worm gear of planar double-enveloping wormwheel pair is four-point contact ball, such axis
It holds and is suitable for bearing purely axial load or axial, the united load based on axial load.Under normal operating condition, should
When class bearing bears the axial load of any direction, a contact angle can be formed, steel ball and inside and outside raceway are respectively contacted with one
Point avoids contact with area and big sliding friction occurs, and therefore, bearing should not bear the load based on radial force.
Summary of the invention
Larger radial direction cannot be born in order to solve the existing planar double-enveloping wormwheel pair for being equipped with four-point contact ball
The problem of power, the purpose of this utility model are to propose a kind of planar double-enveloping wormwheel pair, and the utility model is by conventional planar two
Four-point contact ball in the worm gear of secondary enveloping worm wheel pair replaces with three-row cylinder roller bearing, so that plane-generated double enveloping snail
Wheel set is able to bear at the same time axial load, radial load and tilting moment.
In order to realize above-mentioned purpose of utility model, the utility model uses technical solution as described below:
A kind of planar double-enveloping wormwheel pair, including the worm gear and planar double-enveloping worm being meshed, worm gear
Three-row cylinder roller bearing is provided in inner hole.
Further, the inner hole of worm gear is up big and down small stepped hole, the excircle of the outer ring of three-row cylinder roller bearing
Face is equipped with the first periphery, planar annular and the second periphery, and the first periphery passes through planar annular phase with the second periphery
Even, the diameter of the second periphery is greater than the diameter of the first periphery, the circumference of the first periphery and the small diameter bore of worm gear inner hole
Face contact is concordant, and the second periphery is concordant with the circumference contact of the large diameter hole of worm gear inner hole, and the planar annular is located at snail
On the step surface for taking turns inner hole, the first bolt sequentially passes through worm gear lower end surface, the step surface of worm gear inner hole and annular flat from bottom to top
It is located in the connecting hole of three-row cylinder roller bearing outer ring upper surface setting behind face.
Further, gasket and nut are fitted on first bolt.
Further, the planar double-enveloping wormwheel pair further includes shell, and shell is by circular bottom plate and annular side plate
One composition, annular side plate and circular bottom plate surround an accommodating cavity, and worm gear is located at institute after connecting with three-row cylinder roller bearing
It states in accommodating cavity, the inner ring of three-row cylinder roller bearing is fixedly connected with the circular bottom plate by the second bolt；The ring
Notch is offered on shape side plate, the tooth on worm gear is stretched out from the notch and engaged with the worm screw.
Due to the adoption of the above technical scheme, the utility model has following superiority:
Since three-row cylinder roller bearing can bear axial load, radial load and tilting moment simultaneously, in plane
Three-row cylinder roller bearing is set in the worm gear of twice-enveloping worm gear, so that the utility model has while bearing axial load
The performance of lotus, radial load and tilting moment.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of the outer ring of three-row cylinder roller bearing.
In figure: 1, shell；2, the first sealing ring；3, nut；4, washer；5, the second sealing ring；6, the second inner ring；7, pair pushes away
Power retainer；8, secondary thrust roller；9, radial roller；10, the first inner ring；11, the second bolt；12, main thrust retainer；13,
Main thrust roller；14, third sealing ring；15, the first bolt；16, worm gear；17, outer ring；18, the first periphery；19, annular flat
Face；20, the second periphery.
Specific embodiment
The technical solution of the utility model is described in further detail with reference to the accompanying drawings and embodiments.
In the present invention, the three-row cylinder roller bearing is existing known products, specific structure composition
Are as follows: including the first inner ring 10, the second inner ring 6, outer ring 17, secondary thrust retainer 7, secondary thrust roller 8, main thrust retainer 12,
Main thrust roller 13 and radial roller 9 are equipped with main thrust retainer 12 in the raceway between first inner ring 10 and outer ring 17, main
Several main thrust rollers 13 are installed on thrust retainer 12, pair is installed in the raceway between the second inner ring 6 and outer ring 17 and is pushed away
Power retainer 7 is equipped with several secondary thrust rollers 8 on secondary thrust retainer 7, in the first inner ring 10, the second inner ring 6 and outer ring 17
Between raceway in radial roller 9 is installed, the central axis of the main thrust roller 13 and secondary thrust roller 8 is along level side
To the central axis of radial roller 9 along the vertical direction, is respectively arranged between the first inner ring 10, the second inner ring 6 and outer ring 17
Three sealing rings 14 and the second sealing ring 5.
The difference of the planar double-enveloping wormwheel pair of the utility model and planar double-enveloping wormwheel pair in the prior art
Be: the four-point contact ball in traditional worm gear is replaced with three-row cylinder roller bearing by the utility model, and to worm gear
Inner hole structure and corresponding design has been carried out to the outer ring of three-row cylinder roller bearing.
In the present embodiment, the inner hole of worm gear 16 is up big and down small stepped hole, the outer ring 17 of three-row cylinder roller bearing
Outer circumference surface be equipped with the first periphery 18, planar annular 19 and the second periphery 20, the first periphery 18 and the second circumference
Face 20 is connected by planar annular 19, and the diameter of the second periphery 20 is greater than the diameter of the first periphery 18, the first periphery 18
It is concordant with the circumference contact of small diameter bore of 16 inner hole of worm gear, the circle of the second periphery 20 and the large diameter hole of 16 inner hole of worm gear
All face contacts are concordant, and the planar annular 19 is located on the step surface of 16 inner hole of worm gear, and the first bolt 15 is successively worn from bottom to top
Cross worm gear lower end surface, worm gear inner hole step surface and planar annular after be located at three-row cylinder roller bearing outer ring upper surface setting
In connecting hole.
Gasket and nut are fitted on first bolt 15.
The planar double-enveloping wormwheel pair further includes shell 1, and shell 1 plays the role of sealing and protection worm gear, shell 1
It is integrally made of circular bottom plate and annular side plate, annular side plate and circular bottom plate surround an accommodating cavity, worm gear 16 and three rows
It is located in the accommodating cavity after cylinder roller bearing connection, the inner ring of three-row cylinder roller bearing passes through with the circular bottom plate
Second bolt 11 is fixedly connected；Notch is offered in the annular side plate, the tooth on worm gear 16 stretched out from the notch and with institute
State worm screw engagement.
Claims (4)
1. a kind of planar double-enveloping wormwheel pair, including the worm gear and planar double-enveloping worm being meshed, feature exists
In: three-row cylinder roller bearing is provided in the inner hole of worm gear.
2. planar double-enveloping wormwheel pair according to claim 1, it is characterised in that: the inner hole of worm gear is up big and down small
The outer circumference surface of stepped hole, the outer ring of three-row cylinder roller bearing is equipped with the first periphery, annular horizontal surface and the second circumference
Face, the first periphery are connected with the second periphery by planar annular, and the diameter of the second periphery is greater than the straight of the first periphery
Diameter, the first periphery is concordant with the circumference contact of the small diameter bore of worm gear inner hole, and the second periphery is big straight with worm gear inner hole
The circumference contact in diameter hole is concordant, and the planar annular is located on the step surface of worm gear inner hole, and the first bolt is from bottom to top successively
Across worm gear lower end surface, worm gear inner hole step surface and planar annular after be located at three-row cylinder roller bearing outer ring upper surface be arranged
Connecting hole in.
3. planar double-enveloping wormwheel pair according to claim 2, it is characterised in that: be fitted with pad on first bolt
Piece and nut.
4. planar double-enveloping wormwheel pair according to claim 1, it is characterised in that: further include shell, shell is by justifying
Shape bottom plate and annular side plate integrally form, and annular side plate and circular bottom plate surround an accommodating cavity, worm gear and three-row cylinder roller
It is located in the accommodating cavity after bearing connection, the inner ring of three-row cylinder roller bearing and the circular bottom plate pass through the second bolt
It is fixedly connected；Notch is offered in the annular side plate, the tooth on worm gear is stretched out from the notch and engaged with the worm screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821843635.8U CN209294340U (en) | 2018-11-09 | 2018-11-09 | A kind of planar double-enveloping wormwheel pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821843635.8U CN209294340U (en) | 2018-11-09 | 2018-11-09 | A kind of planar double-enveloping wormwheel pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209294340U true CN209294340U (en) | 2019-08-23 |
Family
ID=67648189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821843635.8U Active CN209294340U (en) | 2018-11-09 | 2018-11-09 | A kind of planar double-enveloping wormwheel pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209294340U (en) |
-
2018
- 2018-11-09 CN CN201821843635.8U patent/CN209294340U/en active Active
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