CN106949200B - Movable gear shifting three-gear speed changing device with two-wheel driving pawls - Google Patents
Movable gear shifting three-gear speed changing device with two-wheel driving pawls Download PDFInfo
- Publication number
- CN106949200B CN106949200B CN201710331592.9A CN201710331592A CN106949200B CN 106949200 B CN106949200 B CN 106949200B CN 201710331592 A CN201710331592 A CN 201710331592A CN 106949200 B CN106949200 B CN 106949200B
- Authority
- CN
- China
- Prior art keywords
- pawl
- wheel
- piece
- transmission
- ratchet wheel
- 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.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/46—Gearings having only two central gears, connected by orbital gears
- F16H3/58—Gearings having only two central gears, connected by orbital gears with sets of orbital gears, each consisting of two or more intermeshing orbital gears
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
- B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
- B62M11/14—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Structure Of Transmissions (AREA)
Abstract
The invention discloses a two-wheel driving pawl movable gear shifting three-gear speed changing device, which comprises: the planetary transmission comprises a first planetary transmission and a second planetary transmission, wherein the first planetary transmission comprises: the first sun gear, the first carrier, the first planet gears and the first ring gear, the second planetary transmission includes: the gear shifting mechanism comprises a ratchet wheel, a pawl piece frame and at least one pawl piece arranged on the pawl piece frame, wherein the ratchet wheel is respectively arranged on a first planetary transmission and a second planetary transmission, so that gear shifting stability is greatly improved.
Description
[ field of technology ]
The invention relates to the technical field of bicycles, in particular to a two-wheel drive pawl movable gear shifting three-gear speed changing device.
[ background Art ]
Along with the development of the tourism industry, the application of the two-wheeled bicycle (or electric bicycle) is also more and more extensive, the speed change and gear shifting of the two-wheeled bicycle in the prior art are generally realized by stepping a piece by foot movement, the specific structure is that a gear shifting internal spline is arranged on the stepping piece, then gear shifting external splines matched with the gear shifting internal spline are respectively arranged on each main part of the planetary transmission, and the gear shifting internal spline on the stepping piece is respectively matched with the gear shifting external spline on each main part of the planetary transmission by foot movement, so that the following defects exist in the gear shifting mode of the spline type engagement: 1. because of the limitation of the structure, in order to enable the pedal to move left and right for gear shifting, a gap is required to be reserved at the middle position of the pedal, so that the whole structure is not compact enough; 2. the gear shifting mode ensures that an overrunning clutch is required to be arranged in the planetary transmission; 3. spline interfacing is relatively difficult, and therefore, both shift handling and shift stability are poor.
Accordingly, there is a need for a dual wheel drive pawl mobile shift three speed transmission that solves the above-identified problems.
[ invention ]
In order to solve the problems, the invention aims to provide the double-wheel driving pawl movable type shifting three-gear speed change device which is compact in structure and good in shifting stability.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a dual wheel drive pawl mobile shift three speed transmission comprising: center transmission shaft, gearshift, two sets of planetary gear trains and cover locate the epaxial power input shaft of center transmission, planetary gear train includes first planetary gear train and second planetary gear train, first planetary gear train includes: the first center wheel, first planet carrier, first planet wheel and first ring gear, first center wheel and central transmission shaft integrated into one piece or fixed connection, the second planetary transmission includes: the gear shifting mechanism comprises a ratchet wheel, a pawl piece frame and at least one pawl piece arranged on the pawl piece frame, the pawl piece frame is integrally formed with a power input shaft or fixedly connected with the power input shaft, an elastic piece used for controlling the initial position of the pawl piece is arranged on the pawl piece frame, and the ratchet wheel comprises a first ratchet wheel arranged on the first central wheel, a second ratchet wheel arranged on the outer circumferential surface of the first planet frame or the second planet frame and a third ratchet wheel arranged on the outer circumferential surface of the second gear.
Preferably, a two-wheel drive pawl mobile shifting three-speed transmission device in the present invention is further provided with: the pawl rack is arranged in a circular ring shape, a plurality of grooves are formed in the pawl rack, and the pawl is accommodated in the grooves and is mounted on the pawl rack through pins.
Preferably, a two-wheel drive pawl mobile shifting three-speed transmission device in the present invention is further provided with: one end of the central transmission shaft is provided with an end cover and a tightening nut, the end cover is connected with the second central wheel through teeth, and the end cover is fixed with the frame.
Preferably, a two-wheel drive pawl mobile shifting three-speed transmission device in the present invention is further provided with: the elastic piece is a spring, a torsion spring or a shrapnel.
Preferably, a two-wheel drive pawl mobile shifting three-speed transmission device in the present invention is further provided with: the pawl piece is provided with a pawl part matched with the ratchet wheel, and the pawl part is provided with an engagement guide surface.
Compared with the prior art, the invention has the following beneficial effects: the two-wheel driving pawl movable type shifting three-gear speed changing device changes the traditional spline type shifting mechanism into the pawl type shifting mechanism, and the pawl type shifting mechanism is compact in structure, convenient to shift and control and capable of greatly improving the shifting stability, and in addition, the pawl type shifting mechanism can be used as an overrunning clutch without using the overrunning clutch in a planetary transmission, so that the structure is greatly simplified.
[ description of the drawings ]
FIG. 1 is a schematic diagram of the front view of a dual wheel drive pawl mobile shift three speed transmission of the present invention.
FIG. 2 is a schematic cross-sectional view of a dual wheel drive pawl mobile shift three speed transmission of the present invention.
Fig. 3 is an exploded view of the two-wheel drive pawl mobile shift three-speed transmission of the present invention.
Fig. 4 is a schematic view of the structure of the pawl according to the present invention.
In the figure: 1. the center drive shaft, 2, the shift mechanism, 20, the pawl carrier, 200, the groove, 21, the pawl, 210, the pawl portion, 211, the engagement guide surface, 22, the first ratchet, 23, the second ratchet, 24, the third ratchet, 3, the first planetary transmission, 30, the first center wheel, 31, the first carrier, 32, the first planetary, 33, the first ring gear, 4, the second planetary transmission, 40, the second center wheel, 41, the second carrier, 42, the second planetary, 43, the second ring gear, 5, the power input shaft, 6, the end cover, 7, and the tightening nut.
[ detailed description ] of the invention
The following describes a two-wheel drive pawl mobile shift three-speed transmission according to the present invention in further detail by way of specific examples.
Referring to fig. 1 to 4, a two-wheel drive pawl mobile shift three-speed transmission includes: the transmission comprises a central transmission shaft 1, a gear shifting mechanism 2, two sets of planetary transmissions (a first planetary transmission 3 and a second planetary transmission 4) arranged on the central transmission shaft 1 and a power input shaft 5 sleeved on the central transmission shaft 1, wherein the power input shaft 5 is connected with a treading piece, and one end of the central transmission shaft 1 is provided with an end cover 6 and a tightening nut 7.
The first planetary transmission 3 includes: the second planetary transmission 4 includes: the first central wheel 30 and the central transmission shaft 1 are integrally formed, the first planet carrier 31 is arranged in the second planet carrier 41, the first planet carrier 31 and the second planet carrier 41 are in tooth connection, the second central wheel 40 is sleeved on the central transmission shaft 1 and is connected with the end cover 6 through teeth, the end cover 6 is fixed with the frame, and the first gear ring 33 and the second central wheel 40 are integrally formed.
The gear shifting mechanism 2 comprises a pawl holder 20, three pawls 21 mounted on the pawl holder 20, a first ratchet wheel 22 arranged on a first center wheel 30, a second ratchet wheel 23 arranged on the outer circumferential surface of a second planet carrier 41, and a third ratchet wheel 24 arranged on the outer circumferential surface of a second gear ring 43, wherein the pawl holder 20 is arranged in a circular ring shape, a plurality of grooves 200 are formed in the pawl holder 20, and the pawls 21 are accommodated in the grooves 200 and are mounted on the pawl holder 20 through pins. The pawl holder 20 is integrally formed with the power input shaft 5, the pawl 21 is provided with a pawl portion 210, two ends of the pawl portion 210 are respectively provided with an engagement guide surface 211, and the engagement guide surfaces 211 play a guiding role when the pawl portion 210 is engaged with a ratchet wheel, so that gear shifting is smoother. The pawl holder 20 is provided with an elastic member for controlling the initial position of the pawl 21, which is a spring in the present embodiment, but may be a torsion spring or other elastic member such as an elastic piece in other embodiments.
The working principle of the double-wheel driving pawl movable gear shifting three-gear speed changing device in the invention is as follows: in the double-wheel-drive pawl movable type shifting three-gear speed changing device, three-gear speed changing is realized, in the low-gear speed changing process, the pawl 21 is meshed with the first ratchet wheel 22, power is input by the power input shaft 5, the pawl 21 is arranged on the pawl support 20 again because the power input shaft 5 and the pawl support 20 are integrally formed, the pawl 21 synchronously rotates, the first ratchet wheel 22 is fixedly connected with the first central wheel 30 because the pawl 21 is meshed with the first ratchet wheel 22, and the first central wheel 30 is integrally formed with the central transmission shaft 1, so that the power is finally transmitted to the central transmission shaft 1 and is output through wheels at two ends of the central transmission shaft 1; in the middle speed gear, the pawl carrier 20 is moved to disengage the pawl 21 from the first ratchet wheel 22 and engage with the third ratchet wheel 24, power is input by the power input shaft 5, the pawl 21 is mounted on the pawl carrier 20 again due to the fact that the power input shaft 5 is integrally formed with the pawl carrier 20, the pawl 21 rotates synchronously, the third ratchet wheel 24 is arranged on the outer circumferential surface of the second gear ring 43 due to the fact that the pawl 21 engages with the third ratchet wheel 24, the second gear ring 43 rotates synchronously, the second gear ring 43 transmits power to the second planet carrier 41 through the transmission of the second planet gears 42, the first planet carrier 31 rotates synchronously due to the fact that the second planet carrier 41 is fixedly connected with the first planet carrier 31, the first planet carrier 31 transmits power to the first central wheel 30 through the transmission of the first planet gears 32, and the first central wheel 30 is integrally formed with the central transmission shaft 1, so that the power is finally transmitted to the central transmission shaft 1 and is output through the wheels at two ends of the central transmission shaft 1; in the high gear, the pawl carrier 20 is moved to disengage the pawl 21 from the third ratchet wheel 24 and engage with the second ratchet wheel 23, power is input from the power input shaft 5, the pawl 21 is mounted on the pawl carrier 20 due to the integral formation of the power input shaft 5 and the pawl carrier 20, the pawl 21 rotates synchronously, the first ratchet wheel 22 is disposed on the outer circumferential surface of the second carrier 41 due to the engagement of the pawl 21 with the second ratchet wheel 23, the second carrier 41 rotates synchronously, the first carrier 31 rotates due to the fixed connection of the second carrier 41 with the first carrier 31, the first carrier 31 transmits power to the first center wheel 30 through the transmission of the first planet wheels 32, and the power is finally transmitted to the center drive shaft 1 and is output by the wheels at both ends of the center drive shaft 1 due to the integral formation of the first center wheel 30 with the center drive shaft 1.
In summary, the two-wheel drive pawl movable type gear shifting three-gear speed changing device changes the traditional spline type gear shifting mechanism into the pawl type gear shifting mechanism, and the pawl type gear shifting mechanism is compact in structure, convenient to shift and operate and greatly improves gear shifting stability.
The above-described embodiments are merely illustrative of the principles and functions of the present invention, and some of the practical examples, not intended to limit the invention; it should be noted that modifications and improvements can be made by those skilled in the art without departing from the inventive concept, and these are all within the scope of the present invention.
Claims (5)
1. A two-wheel drive pawl mobile shift three speed transmission comprising: center transmission shaft, gearshift, two sets of planetary gear trains and cover locate the epaxial power input shaft of center transmission, planetary gear train includes first planetary gear train and second planetary gear train, first planetary gear train includes: the first center wheel, first planet carrier, first planet wheel and first ring gear, first center wheel and central transmission shaft integrated into one piece or fixed connection, the second planetary transmission includes: the gear shifting mechanism comprises a ratchet wheel, a pawl piece frame and at least one pawl piece arranged on the pawl piece frame, the pawl piece frame is integrally formed with a power input shaft or fixedly connected with the power input shaft, an elastic piece used for controlling the initial position of the pawl piece is arranged on the pawl piece frame, and the ratchet wheel comprises a first ratchet wheel arranged on the first central wheel, a second ratchet wheel arranged on the outer circumferential surface of the first planet frame or the second planet frame and a third ratchet wheel arranged on the outer circumferential surface of the second gear.
2. A dual wheel drive pawl mobile shift three speed transmission as defined in claim 1 wherein: the pawl rack is arranged in a circular ring shape, a plurality of grooves are formed in the pawl rack, and the pawl is accommodated in the grooves and is mounted on the pawl rack through pins.
3. A dual wheel drive pawl mobile shift three speed transmission as defined in claim 1 wherein: one end of the central transmission shaft is provided with an end cover and a tightening nut, the end cover is connected with the second central wheel through teeth, and the end cover is fixed with the frame.
4. A dual wheel drive pawl mobile shift three speed transmission as defined in claim 1 wherein: the elastic piece is a spring, a torsion spring or a shrapnel.
5. A dual wheel drive pawl mobile shift three speed transmission as defined in claim 1 wherein: the pawl piece is provided with a pawl part matched with the ratchet wheel, and the pawl part is provided with an engagement guide surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710331592.9A CN106949200B (en) | 2017-05-11 | 2017-05-11 | Movable gear shifting three-gear speed changing device with two-wheel driving pawls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710331592.9A CN106949200B (en) | 2017-05-11 | 2017-05-11 | Movable gear shifting three-gear speed changing device with two-wheel driving pawls |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106949200A CN106949200A (en) | 2017-07-14 |
| CN106949200B true CN106949200B (en) | 2023-09-22 |
Family
ID=59479723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710331592.9A Active CN106949200B (en) | 2017-05-11 | 2017-05-11 | Movable gear shifting three-gear speed changing device with two-wheel driving pawls |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106949200B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339379B (en) * | 2017-08-08 | 2023-06-16 | 张家港川梭车业有限公司 | Movable three-gear speed change device of planetary transmission |
| CN107606075A (en) * | 2017-10-23 | 2018-01-19 | 张家港市九鼎机械有限公司 | A kind of centre wheel inputs the shift transmission of manual shift two |
| CN107600302B (en) * | 2017-10-23 | 2023-02-28 | 张家港川梭车业有限公司 | Transmission shaft output speed change device |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR437451A (en) * | 1911-12-11 | 1912-04-22 | Jean Lacaux | Gear change on crankset, for bicycles, tandems and tri-carriers |
| NL6908288A (en) * | 1968-06-15 | 1969-12-17 | ||
| US4826190A (en) * | 1988-02-18 | 1989-05-02 | Hartmann Dirck T | Dual wheel driven tricycle with a fully enclosed multiple speed drive |
| CN102431624A (en) * | 2011-10-01 | 2012-05-02 | 杨其融 | Multistage variable-speed labor-saving high-speed bicycle driven by oscillating bar |
| EP2567888A1 (en) * | 2011-09-07 | 2013-03-13 | Grzegorz Zielinski | Multi-gear transmission for a bicycle |
| WO2015074444A1 (en) * | 2013-11-19 | 2015-05-28 | 李激初 | Internal speed changer of bicycle |
| CN106428403A (en) * | 2016-08-31 | 2017-02-22 | 张家港川梭车业有限公司 | Three-level variable-speed drive device stable in speed change |
| CN106481755A (en) * | 2016-12-21 | 2017-03-08 | 张家港川梭车业有限公司 | A kind of fixed Two-wheeled multi gear fully-automatic gearbox of centre wheel |
| CN106481756A (en) * | 2016-12-21 | 2017-03-08 | 张家港川梭车业有限公司 | A kind of fixed Two-wheeled third gear fully-automatic gearbox of centre wheel gear ring |
| CN106494563A (en) * | 2016-12-21 | 2017-03-15 | 张家港川梭车业有限公司 | A kind of gear ring center wheel is fixed single-wheel and directly drives many gear fully-automatic gearboxs |
| CN106523608A (en) * | 2016-12-31 | 2017-03-22 | 张家港川梭车业有限公司 | Third-gear dual-wheel-driven full automatic transmission |
| CN206802213U (en) * | 2017-05-11 | 2017-12-26 | 张家港川梭车业有限公司 | A kind of portable gear of gearshift three speed change gear of Two-wheeled ratchet |
-
2017
- 2017-05-11 CN CN201710331592.9A patent/CN106949200B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR437451A (en) * | 1911-12-11 | 1912-04-22 | Jean Lacaux | Gear change on crankset, for bicycles, tandems and tri-carriers |
| NL6908288A (en) * | 1968-06-15 | 1969-12-17 | ||
| US4826190A (en) * | 1988-02-18 | 1989-05-02 | Hartmann Dirck T | Dual wheel driven tricycle with a fully enclosed multiple speed drive |
| EP2567888A1 (en) * | 2011-09-07 | 2013-03-13 | Grzegorz Zielinski | Multi-gear transmission for a bicycle |
| CN102431624A (en) * | 2011-10-01 | 2012-05-02 | 杨其融 | Multistage variable-speed labor-saving high-speed bicycle driven by oscillating bar |
| WO2015074444A1 (en) * | 2013-11-19 | 2015-05-28 | 李激初 | Internal speed changer of bicycle |
| CN106428403A (en) * | 2016-08-31 | 2017-02-22 | 张家港川梭车业有限公司 | Three-level variable-speed drive device stable in speed change |
| CN106481755A (en) * | 2016-12-21 | 2017-03-08 | 张家港川梭车业有限公司 | A kind of fixed Two-wheeled multi gear fully-automatic gearbox of centre wheel |
| CN106481756A (en) * | 2016-12-21 | 2017-03-08 | 张家港川梭车业有限公司 | A kind of fixed Two-wheeled third gear fully-automatic gearbox of centre wheel gear ring |
| CN106494563A (en) * | 2016-12-21 | 2017-03-15 | 张家港川梭车业有限公司 | A kind of gear ring center wheel is fixed single-wheel and directly drives many gear fully-automatic gearboxs |
| CN106523608A (en) * | 2016-12-31 | 2017-03-22 | 张家港川梭车业有限公司 | Third-gear dual-wheel-driven full automatic transmission |
| CN206802213U (en) * | 2017-05-11 | 2017-12-26 | 张家港川梭车业有限公司 | A kind of portable gear of gearshift three speed change gear of Two-wheeled ratchet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106949200A (en) | 2017-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106949202B (en) | Movable gear shifting multi-gear speed changing device with two-wheel driving pawls | |
| CN106949199B (en) | Two-wheel drive pawl movable gear shifting two-gear speed change device | |
| CN106949200B (en) | Movable gear shifting three-gear speed changing device with two-wheel driving pawls | |
| CN204056187U (en) | A kind of internal speed variator of bicycle | |
| CN105836031B (en) | A kind of bicycle double rear wheel straight line tramples device | |
| CN106985963B (en) | Single-wheel drive three-gear speed change device | |
| CN107339379B (en) | Movable three-gear speed change device of planetary transmission | |
| CN106969102B (en) | Single-wheel driving pawl movable gear shifting two-gear speed changing device | |
| CN205578650U (en) | Speed variator | |
| CN103557274A (en) | Combine harvester four-wheel drive shift transfer case | |
| CN206802213U (en) | A kind of portable gear of gearshift three speed change gear of Two-wheeled ratchet | |
| CN206943344U (en) | A kind of portable gearshift multi-gear transmission device of Two-wheeled ratchet | |
| CN107061641B (en) | Double-wheel driving speed changer | |
| CN106985964B (en) | Movable gear-shifting three-gear speed change device with single-wheel drive pawl | |
| CN203796865U (en) | Four-wheel-drive conversion transfer case for combine harvester | |
| CN106985960B (en) | Double-front-wheel direct-drive pawl moving and gear shifting speed change device | |
| CN107588161B (en) | Gear ring input double-wheel drive full-automatic multi-gear transmission | |
| CN205837109U (en) | A kind of bicycle double rear wheel straight line tramples device | |
| CN2603752Y (en) | Automobile transfer gear | |
| CN201045067Y (en) | Speed variator of manpower vehicle | |
| CN111016625B (en) | Central driving type single-side double-motor intelligent transmission system | |
| CN206802211U (en) | A kind of portable gear of gearshift two speed change gear of Two-wheeled ratchet | |
| CN102817971A (en) | Two-way controllable ratchet clutch transmission device | |
| CN207378072U (en) | A kind of centre wheel inputs two shift transmission of manual shift | |
| CN207454681U (en) | A kind of multiple-speed gear-box and automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |