CN207848337U - A kind of stepless speed changing mechanism - Google Patents
A kind of stepless speed changing mechanism Download PDFInfo
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- CN207848337U CN207848337U CN201721461576.3U CN201721461576U CN207848337U CN 207848337 U CN207848337 U CN 207848337U CN 201721461576 U CN201721461576 U CN 201721461576U CN 207848337 U CN207848337 U CN 207848337U
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- fixed plate
- idler wheel
- circular cone
- splined shaft
- shaft
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- 230000007246 mechanism Effects 0.000 title claims abstract description 17
- 238000003825 pressing Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 229910001018 Cast iron Inorganic materials 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Friction Gearing (AREA)
Abstract
A kind of stepless speed changing mechanism, rack includes lower mounting seat, left fixed plate and right fixed plate, frictional drive wheel assembly includes circular cone idler wheel and cylindrical roller, circular cone idler wheel coordinates with cylindrical roller pressing friction, the both ends of circular cone idler wheel are mounted on by bearing in left fixed plate and right fixed plate respectively, and wherein the shaft of the circular cone idler wheel of one end is input shaft；The endoporus of cylindrical roller is internal spline, and cylindrical roller is sleeved on splined shaft, and the both ends of splined shaft are mounted on by bearing in left fixed plate and right fixed plate respectively, and wherein the shaft of the splined shaft of one end is output shaft；Screw slider adjuster includes leading screw and guide block, and the both ends of leading screw are mounted on by bearing in left fixed plate and right fixed plate respectively, and the top of guide block is connect with threads of lead screw, and the lower part of guide block is sleeved on splined shaft, and the lower part of cylindrical roller and guide block is linked；The axis of splined shaft, the axis of leading screw and the busbar of circular cone idler wheel are parallel.The utility model structure is simplified, of low cost.
Description
Technical field
The utility model is related to rotating speed adjusting mechanism, especially a kind of stepless speed changing mechanism.
Background technology
There are many mechanical processing medium velocity regulative mode now, mechanical system such as retarder, V belt translation etc., by changing tooth
Wheel engagement changes belt wheel size and centre-to-centre spacing realization speed shift, and control mode such as permanent torque frequency converter is by controlling frequency
It realizes rotational speed regulation, rotating speed can also be controlled by giving the different input pulse of motor, the rotating speed realized with upper type
Classification jump, and discontinuous, and variable speed contact it is most be automobile contiuously variable transmission, but due to its structure phase
To complexity, manufacturing cost is again very high, thus be simple to manufacture practical, low-cost contiuously variable transmission demand.
Invention content
In order to overcome the higher deficiency of the complicated of existing stepless gearing method, cost, the utility model to provide a kind of
Structure simplification, low-cost stepless speed changing mechanism, use frictional drive can be with simple realization variable speed.
Technical solution adopted by the utility model to solve its technical problems is：
A kind of stepless speed changing mechanism, including rack, frictional drive wheel assembly, splined shaft and screw slider adjuster, it is described
Rack includes lower mounting seat, left fixed plate and right fixed plate, and the left fixed plate is located at the left side of the lower mounting seat, institute
State the right side that right fixed plate is located at the lower mounting seat；The frictional drive wheel assembly includes circular cone idler wheel and cylindrical roller,
The circular cone idler wheel coordinates with the cylindrical roller pressing friction, and the both ends of the circular cone idler wheel are mounted on institute by bearing respectively
It states in left fixed plate and right fixed plate, wherein the shaft of the circular cone idler wheel of one end is input shaft；The endoporus of the cylindrical roller is
Internal spline, the cylindrical roller are sleeved on the splined shaft, and the both ends of the splined shaft are respectively by bearing mounted on described
In left fixed plate and right fixed plate, wherein the shaft of the splined shaft of one end is output shaft；The screw slider adjuster includes silk
The both ends of thick stick and guide block, the leading screw are mounted on by bearing in the left fixed plate and right fixed plate respectively, the guide block
Top is connect with the threads of lead screw, and the lower part of the guide block is sleeved on splined shaft, and under cylindrical roller and the guide block
It links in portion；The axis of the splined shaft, the axis of leading screw and the busbar of circular cone idler wheel are parallel.
Further, the leading screw left end has interior hexagonal screw hole, the die nut for being adjusted manually to leading screw and described six
Angle screw hole cooperation.
Further, the cylindrical roller includes steel wheel and rubber, the outer snare rubber of the steel wheel；Be in order to ensure and
The cooperation of circular cone roller compression increases friction；The circular cone idler wheel is cast iron idler wheel；Be in order to 3 friction fit of cylindrical rubber idler wheel
Coefficient bigger, further increasing friction can also be to circular cone roller surface annular knurl.
Pairing bearing with splined shaft cooperation is angular contact bearing, because splined shaft is by axial force and radial load.
The cone angle of the circular cone idler wheel is at 15 °~45 °.
Bearing installation in the left fixed plate is compressed using end cap, the bearing installation in the right fixed plate and bearing block
Interference fit.
The technical concept of the utility model is：The big end of circular cone idler wheel rubs therewith as input terminal, the drive of circular cone idler wheel
The cylindrical roller of cooperation rotates, and cylindrical roller drives matched splined shaft to rotate, and the right end of splined shaft is as output shaft.It is logical
The manual accurate adjusting to leading screw is crossed, matched guide block is moved axially along leading screw, and guide block stirs cylindrical roller edge and blossoms
Key axis moves axially so that the contact position of cylindrical roller and circular cone idler wheel changes, and is accurately adjusted to reach output rotating speed
The purpose of section realizes the steady stepless transformation of velocity magnitude in a certain range.
The beneficial effects of the utility model are mainly manifested in：Variable speed can be realized by simple mechanism, and can
Speed smooth change is realized with manual adjusting；Structure is simplified, of low cost.
Description of the drawings
Fig. 1 is a kind of explosive view of stepless speed changing mechanism.
Fig. 2 is a kind of front view of stepless speed changing mechanism.
Fig. 3 is an a kind of direction axonometric drawing of stepless speed changing mechanism.
Fig. 4 is a kind of another direction axonometric drawing of stepless speed changing mechanism.
Specific implementation mode
The utility model is further described below in conjunction with the accompanying drawings.
Referring to Fig.1~Fig. 4, a kind of stepless speed changing mechanism, including rack, frictional drive wheel assembly, splined shaft and leading screw are slided
Four part of block adjuster forms.Rack is made of left fixed plate 1, right fixed plate 8 and lower mounting seat 9, friction wheel assembly be by
One circular cone idler wheel 10 and 3 pressing friction of a cylindrical roller cooperation are constituted, and 3 endoporus of cylindrical roller is internal spline, with splined shaft 5
Cooperation, screw slider adjuster are made of leading screw 4 and guide block 2.
Left fixed plate 1 is assembled by bearing (ball) cover 11 and bearing with leading screw 4, splined shaft 5 and circular cone idler wheel 10,
Right fixed plate 8 is interference fitted using end-cover-free form and bearing 6,7, and bearing 6 is plain bearing, and bearing 7 is angular contact bearing
Radial load and axial force can be born, 5 axis of splined shaft and the busbar of 4 axis of leading screw and circular cone idler wheel 10 are parallel.
Primary drive process is：The big end of circular cone idler wheel 10 drives frictional fit therewith as input terminal, circular cone idler wheel 10
Cylindrical roller 3 rotate, cylindrical roller 3 drives matched splined shaft 5 to rotate, and the right end of splined shaft 5 is as output shaft.Silk
4 left end of thick stick has interior hexagonal screw hole, can manually be adjusted to leading screw 4 by die nut, matched guide block 2 is along leading screw 4
Axial movement, guide block 2 are stirred cylindrical roller 3 and are moved axially along splined shaft 5 so that cylindrical roller 3 connects with circular cone idler wheel 10
Tactile position changes, and is accurately adjusted to achieve the purpose that export rotating speed, realizes stable variable speed.
Input and output rotating ratio u21For：
Wherein：R be 10 big end radius surface of circular cone idler wheel, r between 5 axis of splined shaft and 10 busbar of circular cone idler wheel it is parallel away from
From h is the screw pitch of leading screw 4, and the angle that Φ leading screws 4 rotate, γ is the semi-cone angle of circular cone idler wheel 10.
It should be understood that the above-mentioned specific implementation mode of the utility model is used only for exemplary illustration or explains this reality
With novel principle, without constituting limitations of the present invention.Therefore, in the spirit and scope without departing from the utility model
In the case of any modification, equivalent substitution, improvement and etc. done, should be included within the scope of protection of this utility model.In addition,
The appended claims for the utility model are intended to cover to fall into attached claim scope and boundary or this range and boundary
Whole change and modification examples in equivalent form.
Claims (4)
1. a kind of stepless speed changing mechanism, it is characterised in that：Including rack, frictional drive wheel assembly, splined shaft and screw slider tune
Device is saved, the rack includes lower mounting seat, left fixed plate and right fixed plate, and the left fixed plate is located at the lower mounting seat
Left side, the right fixed plate is located at the right side of the lower mounting seat；The frictional drive wheel assembly include circular cone idler wheel and
Cylindrical roller, the circular cone idler wheel coordinate with the cylindrical roller pressing friction, and the both ends of the circular cone idler wheel pass through axis respectively
It holds in the left fixed plate and right fixed plate, wherein the shaft of the circular cone idler wheel of one end is input shaft；The cylinder rolling
The endoporus of wheel is internal spline, and the cylindrical roller is sleeved on the splined shaft, and the both ends of the splined shaft pass through bearing respectively
In the left fixed plate and right fixed plate, wherein the shaft of the splined shaft of one end is output shaft；The screw slider tune
Section device includes leading screw and guide block, and the both ends of the leading screw are mounted on by bearing in the left fixed plate and right fixed plate respectively,
The top of the guide block is connect with the threads of lead screw, and the lower part of the guide block is sleeved on splined shaft, and cylindrical roller and institute
State the lower part linkage of guide block；The axis of the splined shaft, the axis of leading screw and the busbar of circular cone idler wheel are parallel；The cylinder rolling
Wheel includes steel wheel and rubber, the outer snare rubber of the steel wheel；The circular cone idler wheel is cast iron idler wheel；In the left fixed plate
Bearing installation is compressed using end cap, and the bearing installation in the right fixed plate is interference fitted with bearing block.
2. a kind of stepless speed changing mechanism as described in claim 1, it is characterised in that：The leading screw left end has interior hexagonal screw hole,
Die nut for being adjusted manually to leading screw coordinates with the hexagonal screw hole.
3. a kind of stepless speed changing mechanism as claimed in claim 1 or 2, it is characterised in that：With the pairing bearing of splined shaft cooperation
For angular contact bearing.
4. a kind of stepless speed changing mechanism as claimed in claim 1 or 2, it is characterised in that：The cone angle of the circular cone idler wheel
At 15 °~45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721461576.3U CN207848337U (en) | 2017-11-06 | 2017-11-06 | A kind of stepless speed changing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721461576.3U CN207848337U (en) | 2017-11-06 | 2017-11-06 | A kind of stepless speed changing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207848337U true CN207848337U (en) | 2018-09-11 |
Family
ID=63426317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721461576.3U Active CN207848337U (en) | 2017-11-06 | 2017-11-06 | A kind of stepless speed changing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207848337U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519509A (en) * | 2018-11-26 | 2019-03-26 | 刘端辉 | A kind of stepless speed change device of driving wheel |
| CN115652651A (en) * | 2022-11-24 | 2023-01-31 | 华懋（厦门）特种材料有限公司 | Manufacturing process of environment-friendly organic silicon leather |
-
2017
- 2017-11-06 CN CN201721461576.3U patent/CN207848337U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519509A (en) * | 2018-11-26 | 2019-03-26 | 刘端辉 | A kind of stepless speed change device of driving wheel |
| CN109519509B (en) * | 2018-11-26 | 2020-07-28 | 六安市龙兴汽车零部件有限公司 | Stepless speed change device of driving wheel |
| CN115652651A (en) * | 2022-11-24 | 2023-01-31 | 华懋（厦门）特种材料有限公司 | Manufacturing process of environment-friendly organic silicon leather |
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