CN113685517B - A continuously variable transmission with adjustable transmission ratio characteristic curve - Google Patents
A continuously variable transmission with adjustable transmission ratio characteristic curve Download PDFInfo
- Publication number
- CN113685517B CN113685517B CN202110983290.6A CN202110983290A CN113685517B CN 113685517 B CN113685517 B CN 113685517B CN 202110983290 A CN202110983290 A CN 202110983290A CN 113685517 B CN113685517 B CN 113685517B
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- Prior art keywords
- eccentric bolt
- moving wheel
- spring
- inclined plane
- eccentric
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 54
- 238000009434 installation Methods 0.000 abstract description 7
- 230000001133 acceleration Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000009194 climbing Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- 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
- F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
- F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
- F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
- F16H9/12—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members
- F16H9/14—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using only one pulley built-up out of adjustable conical parts
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- 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
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/52—Pulleys or friction discs of adjustable construction
- F16H55/56—Pulleys or friction discs of adjustable construction of which the bearing parts are relatively axially adjustable
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmissions By Endless Flexible Members (AREA)
- Friction Gearing (AREA)
Abstract
The invention discloses a stepless speed changer with an adjustable transmission bit characteristic curve, which comprises a shaft sleeve, a spring seat, a moving wheel, a sliding cover, a spring, a swing arm, a cylindrical roller, an inclined plane guide block and an eccentric bolt assembly, wherein one end of the swing arm is hinged to the spring seat, the other end of the swing arm is connected with the cylindrical roller, the inclined plane guide block is hinged to the moving wheel, the eccentric bolt assembly comprises an eccentric bolt and a nut, one side of the inclined plane guide block leans against an eccentric cylindrical section, and a guide inclined plane leans against the cylindrical roller is arranged on the other side of the inclined plane guide block. The stepless speed changer with the adjustable transmission bit characteristic curve can change the transmission bit characteristic curve of the speed changer by adjusting the installation position of the eccentric bolt, so that the speed changer can better meet the running requirements of vehicles in different areas.
Description
Technical Field
The invention relates to the technical field of a speed changer, in particular to a stepless speed changer.
Background
The motorcycle is a flexible traffic tool and is widely used in mountain areas and plain areas. However, the motorcycle has different requirements for the speed change performance of the continuously variable transmission when driving on mountain and plain. For example, when a motorcycle is often driven on a mountain, a situation that the vehicle is often started on an uphill road section occurs, and the torque required to be output by the continuously variable transmission of the vehicle is larger at the moment, so that the climbing requirement of the vehicle can be ensured, therefore, the transmission bit curve of the continuously variable transmission of the motorcycle which is often used on the mountain is gentle, the time required for the acceleration process from low speed to high speed is longer, and when the vehicle is often driven on a flat ground, the requirements on the acceleration performance and the vehicle speed of the vehicle are required to be preferentially met, and the transmission bit curve of the continuously variable transmission is steeper, and the time required for the acceleration process from low speed to high speed is shorter. However, as shown in fig. 1 of the specification, the mounting positions and shapes of the arc-shaped flywheels 1 and the cylindrical rollers 2 for determining the transmission ratio characteristic curve of the conventional motorcycle continuously variable transmission are invariable, so that the transmission ratio characteristic curve of the continuously variable transmission is not adjustable, and further, the same continuously variable transmission cannot conveniently meet different transmission performance requirements of a vehicle when the vehicle runs on hills and flat lands.
Disclosure of Invention
In view of the above, the present invention aims to provide a continuously variable transmission with an adjustable transmission bit characteristic curve, so as to solve the technical problem that the transmission bit characteristic curve of the existing continuously variable transmission is not adjustable, so that the continuously variable transmission cannot conveniently meet different requirements of a vehicle on speed change performance when the vehicle runs on two different road conditions of mountain and flat land.
The stepless speed changer with adjustable transmission bit characteristic curve comprises a shaft sleeve, a spring seat, a moving wheel, a sliding cover and a spring, wherein the spring seat is fixed in the middle of the shaft sleeve, the moving wheel and the sliding cover are positioned at two sides of the spring seat, the movable wheel and the sliding cover are sleeved on the shaft sleeve in a mode of being capable of moving along the axial direction, the movable wheel is fixedly connected with the sliding cover, one end of the spring is propped against the spring seat, the other end of the spring is propped against the sliding cover, and the movable wheel further comprises a swing arm, a cylindrical roller, an inclined plane guide block and an eccentric bolt assembly;
one end of the swing arm is hinged to the spring seat, and the other end of the swing arm is connected with the cylindrical roller;
the inclined guide block is hinged on the moving wheel;
The eccentric bolt assembly comprises an eccentric bolt and a nut, wherein the eccentric bolt is provided with a section of eccentric cylindrical section, the moving wheel is provided with a hexagonal hole matched with the hexagonal head of the eccentric bolt, the eccentric bolt penetrates through the moving wheel, the head of the eccentric bolt is embedded in the hexagonal hole, and the other end of the eccentric bolt is connected with the nut;
one side of the inclined plane guide block leans against the eccentric cylindrical section, and the other side of the inclined plane guide block is provided with a guide inclined plane leaning against the cylindrical roller.
Further, the eccentric bolt is also sleeved with a locking spring, one end of the locking spring is propped against the nut, and the other end of the locking spring is propped against the movable wheel.
The invention has the beneficial effects that:
The invention relates to a stepless speed changer with an adjustable transmission bit characteristic curve, and the installation position of an eccentric bolt of the stepless speed changer is adjustable. When the installation position of the eccentric bolt rotates by an angle, the angle of the eccentric cylindrical section on the installation position changes along with the change, so that the angle of the inclined plane guide block leaning on the eccentric cylindrical section changes, the angle of the guide inclined plane matched with the cylindrical roller changes in the speed changing process, and the transmission bit characteristic curve of the speed changer changes. Therefore, when the motorcycle adopting the transmission mainly runs on mountain lands, the position of the eccentric bolt can be changed to adjust the transmission bit characteristic curve to be gentle so as to ensure the output torque of the transmission and meet the climbing performance of the transmission, and when the motorcycle adopting the transmission mainly runs on gentle terrains, the position of the eccentric bolt can be changed to adjust the transmission bit characteristic curve to be steep so as to enable the vehicle to be rapidly added to high speed from low speed so as to ensure the acceleration performance of the vehicle.
Drawings
FIG. 1 is a schematic diagram of a conventional continuously variable transmission;
FIG. 2 is a schematic diagram of a continuously variable transmission with an adjustable transmission bit characteristic;
FIG. 3 is a schematic illustration of a guide wheel engaging a guide slot;
FIG. 4 is a side view of a moving wheel;
FIG. 5 is a schematic view of the structure of an eccentric bolt;
Fig. 6 is a schematic view of an eccentric bolt mounted on a moving wheel.
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in the figure, the continuously variable transmission with the adjustable transmission bit characteristic comprises a shaft sleeve 3, a spring seat 4, a moving wheel 5, a sliding cover 6 and a spring 7, wherein the spring seat is fixed in the middle of the shaft sleeve, the moving wheel and the sliding cover are positioned on two sides of the spring seat, the moving wheel and the sliding cover are sleeved on the shaft sleeve in a mode of being capable of moving along the axial direction, the moving wheel and the sliding cover are fixedly connected, one end of the spring is propped against the spring seat, and the other end of the spring is propped against the sliding cover. During shifting, the moving wheel and the sliding cover move simultaneously in the axial direction.
The continuously variable transmission with the adjustable transmission bit characteristic curve is characterized in that the moving wheel is further provided with a guide groove 8 axially parallel to the shaft sleeve, the spring seat is further provided with a guide wheel 9 in sliding fit with the guide groove, the moving wheel is guided to move along the axial direction through the cooperation of the guide wheel and the guide groove, and the moving wheel and the shaft sleeve can be prevented from rotating relatively.
The continuously variable transmission with the adjustable transmission bit characteristic curve of the embodiment further comprises a swing arm 10, a cylindrical roller 11, an inclined plane guide block 12 and an eccentric bolt component.
One end of the swing arm is hinged to the spring seat, and the other end of the swing arm is connected with the cylindrical roller through a bolt 13. Of course, in different embodiments, the bolts 13 may also be replaced by other rivets, pins or the like.
The inclined guide block is hinged on the moving wheel, and particularly the inclined guide block is sleeved on the pin shaft 14, and the pin shaft is arranged on the moving wheel.
The eccentric bolt assembly comprises an eccentric bolt 15 and a nut 16, wherein a section of eccentric cylindrical section 151 is arranged on the eccentric bolt, a hexagonal hole 51 matched with a hexagonal head 152 of the eccentric bolt is arranged on the moving wheel, the eccentric bolt penetrates through the moving wheel, the head of the eccentric bolt is embedded in the hexagonal hole, and the other end of the eccentric bolt is connected with the nut. The hexagonal hole can prevent the eccentric bolt from rotating.
One side of the inclined guide block is abutted against the eccentric cylindrical section, and the other side of the inclined guide block is provided with a guide inclined surface 121 abutted against the cylindrical roller.
In the continuously variable transmission with the adjustable transmission ratio characteristic curve in the embodiment, the installation position of the eccentric bolt is adjustable. When the installation position of the eccentric bolt rotates by an angle, the angle of the eccentric cylindrical section on the installation position changes along with the change, so that the angle of the inclined plane guide block leaning on the eccentric cylindrical section changes, the angle of the guide inclined plane matched with the cylindrical roller changes in the speed changing process, and the transmission bit characteristic curve of the speed changer changes. Therefore, when the motorcycle adopting the transmission mainly runs on mountain lands, the position of the eccentric bolt can be changed to adjust the transmission bit characteristic curve to be gentle so as to ensure the output torque of the transmission and meet the climbing performance of the transmission, and when the motorcycle adopting the transmission mainly runs on gentle terrains, the position of the eccentric bolt can be changed to adjust the transmission bit characteristic curve to be steep so as to enable the vehicle to be rapidly added to high speed from low speed so as to ensure the acceleration performance of the vehicle.
As an improvement of the above embodiment, the eccentric bolt is further sleeved with a locking spring 17, one end of the locking spring is propped against the nut, and the other end of the locking spring is propped against the movable wheel. Vibration can be generated in the running process of the vehicle, and the problem that nuts loose and fall off under vibration can be avoided by arranging the anti-loose spring.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (2)
1. The stepless speed changer with the adjustable transmission bit characteristic curve comprises a shaft sleeve, a spring seat, a moving wheel, a sliding cover and a spring, wherein the spring seat is fixed in the middle of the shaft sleeve, the moving wheel and the sliding cover are positioned on two sides of the spring seat, the moving wheel and the sliding cover are sleeved on the shaft sleeve in a mode of being capable of moving along the axial direction, the moving wheel and the sliding cover are fixedly connected, one end of the spring is propped against the spring seat, and the other end of the spring is propped against the sliding cover, and the stepless speed changer is characterized by further comprising a swing arm, a cylindrical roller, an inclined plane guide block and an eccentric bolt assembly;
one end of the swing arm is hinged to the spring seat, and the other end of the swing arm is connected with the cylindrical roller;
the inclined guide block is hinged on the moving wheel;
The eccentric bolt assembly comprises an eccentric bolt and a nut, wherein the eccentric bolt is provided with a section of eccentric cylindrical section, the moving wheel is provided with a hexagonal hole matched with the hexagonal head of the eccentric bolt, the eccentric bolt penetrates through the moving wheel, the head of the eccentric bolt is embedded in the hexagonal hole, and the other end of the eccentric bolt is connected with the nut;
one side of the inclined plane guide block leans against the eccentric cylindrical section, and the other side of the inclined plane guide block is provided with a guide inclined plane leaning against the cylindrical roller.
2. The continuously variable transmission with an adjustable transmission bit characteristic curve according to claim 1, wherein the eccentric bolt is further sleeved with a locking spring, one end of the locking spring is propped against the nut, and the other end of the locking spring is propped against the movable wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110983290.6A CN113685517B (en) | 2021-08-25 | 2021-08-25 | A continuously variable transmission with adjustable transmission ratio characteristic curve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110983290.6A CN113685517B (en) | 2021-08-25 | 2021-08-25 | A continuously variable transmission with adjustable transmission ratio characteristic curve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113685517A CN113685517A (en) | 2021-11-23 |
| CN113685517B true CN113685517B (en) | 2025-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110983290.6A Active CN113685517B (en) | 2021-08-25 | 2021-08-25 | A continuously variable transmission with adjustable transmission ratio characteristic curve |
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| Country | Link |
|---|---|
| CN (1) | CN113685517B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN215370829U (en) * | 2021-08-25 | 2021-12-31 | 重庆长兴工业有限公司 | Continuously variable transmission with adjustable transmission ratio characteristic curve |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6149540A (en) * | 1997-09-17 | 2000-11-21 | Polaris Industries Inc. | Continuously variable transmission system with engine braking |
| WO2007020665A1 (en) * | 2005-08-18 | 2007-02-22 | Dayco Europe S.R.L. Con Unico Socio | Pulley assembly for a continuously variable transmission |
| CA2774253A1 (en) * | 2009-09-15 | 2011-03-24 | Consortium De Recherche Brp-Universite De Sherbrooke S.E.N.C. | Driving pulley for a continuously variable transmission |
-
2021
- 2021-08-25 CN CN202110983290.6A patent/CN113685517B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN215370829U (en) * | 2021-08-25 | 2021-12-31 | 重庆长兴工业有限公司 | Continuously variable transmission with adjustable transmission ratio characteristic curve |
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| Publication number | Publication date |
|---|---|
| CN113685517A (en) | 2021-11-23 |
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