CN103174808A - Stepless speed change device - Google Patents

Stepless speed change device Download PDF

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Publication number
CN103174808A
CN103174808A CN2013101001863A CN201310100186A CN103174808A CN 103174808 A CN103174808 A CN 103174808A CN 2013101001863 A CN2013101001863 A CN 2013101001863A CN 201310100186 A CN201310100186 A CN 201310100186A CN 103174808 A CN103174808 A CN 103174808A
Authority
CN
China
Prior art keywords
shaft
semisphere
transmission shaft
transmission
stepless speed
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.)
Pending
Application number
CN2013101001863A
Other languages
Chinese (zh)
Inventor
周长峰
陈其波
吴娜
孙伟航
彭倩
张振
李明
雷文凯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Jiaotong University
Original Assignee
Shandong Jiaotong University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shandong Jiaotong University filed Critical Shandong Jiaotong University
Priority to CN2013101001863A priority Critical patent/CN103174808A/en
Publication of CN103174808A publication Critical patent/CN103174808A/en
Pending legal-status Critical Current

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Abstract

The invention provides a stepless speed change device which comprises a shell body, a left semisphere shaft, a right semisphere shaft, a transmission shaft, a transmission shaft support, a direction rotating shaft and the like. The transmission shaft has the same profile curve as the left semisphere shaft and the right semisphere shaft, and therefore the transmission shaft, the left semisphere shaft and the right semisphere shaft throughout keep line contact in a movement process. Power is input from the left semisphere shaft, and the transmission shaft rotates around the transmission shaft under the action of friction, and drives the right semisphere shaft to rotate to achieve power output. The transmission shaft support is driven by the direction rotating shaft to rotate by a certain angle in space along with the direction rotating shaft, the contact radius of a left end and the contact radius of a right end of the transmission shaft are enabled to change, and therefore a change of a transmission ratio is achieved. When the direction rotating shaft continuously rotates in the space, continuous changes of the transmission ratio are achieved, and stepless speed adjustment is achieved at an output end of the right semisphere shaft. The stepless speed change device has the advantages of being simple in whole structure, convenient to manufacture, capable of being installed in small working space, and capable of changing power which is capable of being transmitted by changing the pressure of the transmission of the transmission shaft, the pressure of the left semisphere shaft, the pressure the right semisphere shaft, the length of a contact curve between the transmission shaft and the left semisphere shaft and the length of a contact curve between the transmission shaft and the right semisphere shaft, and satisfying various requirements of the power.

Description

A kind of stepless speed changes devices
Technical field
The present invention relates to stepless speed changes devices, applicable to the various machinery that gear ratio is arranged.
Background technique
At present, known stepless speed changes devices has the devices such as hydraulic automatic speed variator, CVT, and hydraulic automatic speed variator is comprised of fluid torque converter, planetary pinion and hydraulic control system, and the mode by fluid power transmission and Gear combination reaches variable-speed torque-converting; CVT adopts the ratchet of driving belt and variable groove width to carry out transmission of power, and when ratchet changed groove width, the contact radius of corresponding change driving wheel and follower upper driving band carried out speed change.These two kinds of stepless speed changes devicess have all that weight is large, complex structure, manufacturing is consuming time, cost is expensive, the limited characteristics of moment of torsion transmitted, and in productive life, some machinery or device need some stepless speed changes devicess with low cost, easy to manufacture, that requirements of installation space is little are installed, and CVT and hydraulic automatic speed variator are inapplicable to above-mentioned situation.
Summary of the invention
The object of the present invention is to provide a kind of stepless speed changes devices, this device is applicable to require the machinery of stepless gear ratio.
The present invention adopts following technological scheme:
Stepless speed changes devices of the present invention is comprised of housing, cap, left hemisphere axle, right half ball journal, transmission shaft, direction rotating shaft, drive axle support, flat key, bearing wheel flange, rubber pad, bearing cap and bearing.
The left hemisphere axle of described stepless speed changes devices and right half ball journal are arranged on housing, left hemisphere axle input power, the left hemisphere axle drives the transmission shaft rotation, transmission shaft drives right half ball journal again and rotates outputting power, change the angle of transmission shaft in the space by direction rotating shaft, realize the change of velocity ratio, when direction rotating shaft rotates continuously in the space, just realized the stepless change of this device.
Described stepless speed changes devices, the hollow spheres of left hemisphere axle and right half ball journal has identical radius, and its sphere center position overlaps.
Described stepless speed changes devices, its direction rotating shaft center line is by the centre of sphere of left and right half ball journal, and drive axle support is fixed on direction rotating shaft, and transmission shaft is fixed on drive axle support, and the rotation of direction rotating shaft turns over several angle with transmission shaft.
Described stepless speed changes devices, the hollow spheres profilogram of its end part of driving shaft profilogram and left hemisphere axle and right half ball journal coincide, and in movement process, transmission shaft remains that with the hollow spheres of left and right half ball journal line contacts; Between its bearing outer ring and bearing cap, rubber pad is installed, by the pretightening force adjusting transmission shaft of adjusting rubber pad and the pressure between left and right hemisphere shaft hollow ball.
The beneficial effect of described stepless speed changes devices is: general structure is simple, and is easily manufactured, also can install at less working space, changes transmission shaft and namely satisfies different power requirementss from the pressure of half ball journal and the length of inter_curve.
Description of drawings
Fig. 1 is the sectional elevation view of the stepless speed changes devices of one embodiment of the present invention.
Fig. 2 means the plan view of the above-mentioned mode of execution of the present invention.
The drawing reference numeral explanation
1, housing, 2, cap, 3, the left hemisphere axle, 4, right half ball journal, 5, transmission shaft, 6, direction rotating shaft, 7, drive axle support, 8, flat key, 9, the bearing wheel flange, 10, rubber pad, 11, bearing cap, 12, bearing
Embodiment
Below, based on description of drawings one embodiment of the present invention.
Fig. 1 is the sectional elevation view that shows the stepless speed changes devices of one embodiment of the present invention.
As shown in Figure 1, a kind of stepless speed changes devices comprises housing 1, cap 2, left hemisphere axle 3, right half ball journal 4, transmission shaft 5, direction rotating shaft 6, drive axle support 7, flat key 8, bearing wheel flange 9, rubber pad 10, bearing cap 11, bearing 12, fixed block 13.
As Fig. 1, shown in Figure 2, left hemisphere axle 3 directly is connected with bearing 12, bearing 12 is arranged between housing 1 and fixed block 13, bearing 12 outsides are equipped with rubber pad 10 and bearing cap 11, regulate by the fixing bolt of bearing cap 11 pretightening force that rubber pad 10 produces, produce thereby make the pressure that needs between left hemisphere axle 3 and transmission shaft 5, guarantee both close contacts in movement process; Placement and left hemisphere axle 3 between right half ball journal 4 and housing 1 and fixed block 13 are similar; Direction rotating shaft 6 is arranged on housing 1, and drive axle support 7 is fixed on direction rotating shaft 6 by flat key 8, and transmission shaft 5 is supported on bearing 14, and bearing 14 is fixed on drive axle support 7 by bearing wheel flange 9; Cap 2 is bolted on housing 1.
Left hemisphere axle 3 is passed to power in the external connection power source, and under the frictional force effect, left hemisphere axle 3 is with transmission shaft 5 motions, and transmission shaft 5 is with the right side half ball journal 4 motions.
During at horizontal position, right half ball journal 4 is consistent with left hemisphere axle 3 rotational velocity when transmission shaft 5, and velocity ratio is 1; When transmission shaft 5 rotated counterclockwise several angle with direction rotating shaft 6, the contact radius of left hemisphere axle 3 and transmission shaft 5 was greater than the contact radius of the right side half ball journal 4 with transmission shaft 5, and right half ball journal 4 rotational velocity are high, and velocity ratio is less than 1; When transmission shaft 5 clockwise rotated several angle with direction rotating shaft 6, the contact radius of left hemisphere axle 3 and transmission shaft 5 was less than the contact radius of the right side half ball journal 4 with transmission shaft 5, and right half ball journal 4 rotational velocity are low, and velocity ratio is greater than 1.
The distortion of mode of execution in addition, the present invention is not limited to above-mentioned mode of execution, all details distortion that can realize function of the present invention, improves and also is contained in the present invention.
For example; transmission shaft 5 is by bearing 14, drive axle support 7, bearing wheel flange 9; fit together with direction rotating shaft 6 and rotate; also can will form a whole after drive axle support 7, bearing wheel flange 9 and bearing 14 welding; transmission shaft 5 is rear with direction rotating shaft 6 rotations with this welding body assembling, and foregoing also is suitable for scope of patent protection of the present invention.

Claims (5)

1. a stepless speed changes devices, be comprised of housing, cap, left hemisphere axle, right half ball journal, transmission shaft, direction rotating shaft, drive axle support, flat key, bearing wheel flange, rubber pad, bearing cap, bearing.
2. stepless speed changes devices described according to right 1, is characterized in that the hollow spheres of left hemisphere axle and right half ball journal has identical radius and the coincidence of its sphere center position.
3. stepless speed changes devices described according to right 1, it is characterized in that the direction rotating shaft center line is by the centre of sphere of left and right half ball journal, drive axle support is fixed on direction rotating shaft, and transmission shaft is fixed on drive axle support, and the rotation of direction rotating shaft turns over several angle with transmission shaft.
4. stepless speed changes devices described according to right 1 is characterized in that the end part of driving shaft profilogram matches with the profilogram of left hemisphere axle and right half ball journal respectively, and in movement process, transmission shaft remains that with left and right half ball journal line contacts.
5. stepless speed changes devices described according to right 1, be equipped with rubber pad between bearing outer ring and bearing cap, by regulating the pretightening force of rubber pad, regulates the pressure between transmission shaft and left and right hemisphere shaft hollow ball.
CN2013101001863A 2013-03-13 2013-03-13 Stepless speed change device Pending CN103174808A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013101001863A CN103174808A (en) 2013-03-13 2013-03-13 Stepless speed change device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013101001863A CN103174808A (en) 2013-03-13 2013-03-13 Stepless speed change device

Publications (1)

Publication Number Publication Date
CN103174808A true CN103174808A (en) 2013-06-26

Family

ID=48634873

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2013101001863A Pending CN103174808A (en) 2013-03-13 2013-03-13 Stepless speed change device

Country Status (1)

Country Link
CN (1) CN103174808A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105114576A (en) * 2015-09-18 2015-12-02 湖南农业大学 Dual-spherical disc type stepless transmission
CN105508533A (en) * 2016-01-18 2016-04-20 侯亚峰 Shell running device of continuously variable transmission
CN112253735A (en) * 2020-10-21 2021-01-22 山东大学 Transmission method and device for continuously adjusting stepless speed change output torque

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR922847A (en) * 1946-01-09 1947-06-19 Moteurs Renee Soc D Improvements to variable speed drives
GB1012677A (en) * 1961-08-21 1965-12-08 Excelermatic Variable speed power transmission devices
DE2457060A1 (en) * 1974-12-03 1976-07-15 Titt Geb Gundel Lore Infinitely variable friction gearing - has drive members with confronting hemispherical recesses engaged by friction wheels
JPH05231504A (en) * 1992-02-21 1993-09-07 Iseki & Co Ltd Speed change gear
WO2005064204A1 (en) * 2003-12-22 2005-07-14 Huettlin Herbert Variable gearbox
CN201096184Y (en) * 2007-09-08 2008-08-06 辽宁曙光汽车集团股份有限公司 Main reducing gear assembly automobile drive bridge assembly for establishing bearing pretightening

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR922847A (en) * 1946-01-09 1947-06-19 Moteurs Renee Soc D Improvements to variable speed drives
GB1012677A (en) * 1961-08-21 1965-12-08 Excelermatic Variable speed power transmission devices
DE2457060A1 (en) * 1974-12-03 1976-07-15 Titt Geb Gundel Lore Infinitely variable friction gearing - has drive members with confronting hemispherical recesses engaged by friction wheels
JPH05231504A (en) * 1992-02-21 1993-09-07 Iseki & Co Ltd Speed change gear
WO2005064204A1 (en) * 2003-12-22 2005-07-14 Huettlin Herbert Variable gearbox
CN201096184Y (en) * 2007-09-08 2008-08-06 辽宁曙光汽车集团股份有限公司 Main reducing gear assembly automobile drive bridge assembly for establishing bearing pretightening

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105114576A (en) * 2015-09-18 2015-12-02 湖南农业大学 Dual-spherical disc type stepless transmission
CN105114576B (en) * 2015-09-18 2017-06-23 湖南农业大学 Double sphere disc type bunchers
CN105508533A (en) * 2016-01-18 2016-04-20 侯亚峰 Shell running device of continuously variable transmission
CN112253735A (en) * 2020-10-21 2021-01-22 山东大学 Transmission method and device for continuously adjusting stepless speed change output torque

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C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20130626

C02 Deemed withdrawal of patent application after publication (patent law 2001)