CN112324881A - Novel continuously variable transmission - Google Patents
Novel continuously variable transmission Download PDFInfo
- Publication number
- CN112324881A CN112324881A CN201910693001.1A CN201910693001A CN112324881A CN 112324881 A CN112324881 A CN 112324881A CN 201910693001 A CN201910693001 A CN 201910693001A CN 112324881 A CN112324881 A CN 112324881A
- Authority
- CN
- China
- Prior art keywords
- circular table
- dovetail grooves
- belt
- steel sheet
- wheels
- 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
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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
- F16H9/08—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 conical drum
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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
- F16H55/36—Pulleys
- F16H55/38—Means or measures for increasing adhesion
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmissions By Endless Flexible Members (AREA)
Abstract
The invention belongs to the field of transmission machinery. In the field, the existing steel belt wheel type Continuously Variable Transmission (CVT) has the defects of high requirements on steel belt manufacturing materials and processes and easiness in slipping. The invention discloses a novel continuously variable transmission, which comprises a pair of driving wheels of a circular table top or a pair of driven wheels of the circular table top, and is characterized in that: dovetail grooves are distributed on the circular table surface of the driving wheel along a circular table bus; a trapezoidal steel sheet is clamped between dovetail grooves of two circular table wheels which are installed in a matched mode, the oblique edge of the trapezoidal steel sheet is embedded into the dovetail grooves and can slide along the dovetail grooves, the revolving radius of a belt pulley is changed, and stepless speed change is achieved. The contact surface of the belt and the steel sheet is provided with meshed fine teeth to prevent slipping; the cost can be reduced by replacing a steel belt with a belt, popularization is facilitated, more consumers can enjoy driving comfort brought by the CVT, and energy conservation and emission reduction are promoted.
Description
The invention belongs to the field of transmission machinery.
In the field, a Continuously Variable Transmission (CVT) can stably change speed in the driving process of an automobile, so that an engine always works in the best working condition, and the CVT is energy-saving and environment-friendly; moreover, offering better ride comfort has been applied in some automotive applications. However, in a common steel belt wheel type Continuously Variable Transmission (CVT), because power is transmitted by using the friction force between the two convex conical surface wheel discs and the inverted trapezoidal steel sheet on the steel belt, the manufacturing material and process requirements of the steel belt are high, and the friction force between the steel belt and the two convex conical surface wheel discs is limited (easy to slip and only suitable for small-displacement automobiles).
The object of the present invention is to provide a novel Continuously Variable Transmission (CVT) that can use a conventional drive belt, reduce the cost, increase friction, and prevent slipping.
The invention discloses a novel stepless speed changer, which comprises a pair of driving wheels of a round table top (or a conical surface) or a pair of driven wheels of the round table top (or the conical surface), and is characterized in that: dovetail grooves are distributed on the circular table surface (or the conical surface) of the driving wheel along the generatrix of the circular table (or the conical surface); a trapezoidal steel sheet is clamped between dovetail grooves of two transmission wheels which are installed in a matched mode, the edges of two inclined edges of the trapezoidal steel sheet are thick, the edges of the inclined edges are just embedded into the dovetail grooves, and the inclined edges can slide by taking the dovetail grooves as guide rails.
Description of drawings referring to the drawings, fig. 1 is a front view of a circular table wheel, and fig. 2 is a cross-sectional view of a state in which trapezoidal steel sheets are clamped between two circular table wheels installed in pairs and dovetail grooves thereof. In the figure, 1 and 1 ' are truncated cone (or conical) wheels, 2 and 2 ' are dovetail grooves arranged along a generatrix, 3 and 3 ' are trapezoidal steel sheets, and 4 is a transmission belt. The working principle of the novel continuously variable transmission disclosed by the invention is described in detail below with reference to the accompanying drawings: as shown in fig. 2, when the two circular table wheels 1 and 1 'are close to each other under the action of the servo system, the oblique edge of the trapezoidal steel sheet 3 clamped between the dovetail grooves 2 and 2' can slide by taking the dovetail grooves as a guide rail, and further, the longer bottom edge of the trapezoidal steel sheet 3 can be far away from the wheel axle of the circular table wheel, so that the revolving radius of the transmission belt 4 is increased; on the contrary, when the two circular table wheels 1 and 1' are moved away from each other by the servo system, the revolving radius of the driving belt 4 becomes smaller. Thus, stepless speed change can be realized.
The novel continuously variable transmission disclosed by the invention has the beneficial effects that the enveloping surface of the longer bottom edge of the trapezoidal steel sheet directly contacting with the transmission belt is a polygonal prism surface, is not easy to slip and can be suitable for automobiles with larger displacement; the common belt replaces a steel belt, so that the cost can be reduced, the popularization is facilitated, more consumers can enjoy the driving comfort brought by the CVT, more automobile engines can work under the optimal working condition, and the energy conservation and emission reduction are promoted.
The best embodiments of the present invention are: two variable-diameter belt pulleys formed by two pairs of circular truncated cone wheels with dovetail grooves are respectively used as a driving wheel and a driven wheel, and are matched with a servo system adopted by the existing steel belt wheel type stepless speed changer to form the stepless speed changer; the contact surface of the belt and the trapezoidal steel sheet can be provided with mutually meshed fine teeth, so that the anti-slip capability is further improved.
Claims (2)
1. A novel stepless speed changer comprises a pair of driving wheels of a circular table top (or a conical surface) or a pair of driven wheels of the circular table top (or the conical surface), and is characterized in that: dovetail grooves are distributed on the circular table surface (or the conical surface) of the driving wheel along the generatrix of the circular table (or the conical surface); a trapezoidal steel sheet is clamped between dovetail grooves of two transmission wheels which are installed in a matched mode, the edges of two inclined edges of the trapezoidal steel sheet are thick, the edges of the inclined edges are just embedded into the dovetail grooves, and the inclined edges can slide by taking the dovetail grooves as guide rails.
2. The new continuously variable transmission of claim 1, wherein: the contact surface of the belt and the trapezoidal steel sheet is provided with fine teeth which can be meshed with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910693001.1A CN112324881A (en) | 2019-07-20 | 2019-07-20 | Novel continuously variable transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910693001.1A CN112324881A (en) | 2019-07-20 | 2019-07-20 | Novel continuously variable transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112324881A true CN112324881A (en) | 2021-02-05 |
Family
ID=74319917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910693001.1A Pending CN112324881A (en) | 2019-07-20 | 2019-07-20 | Novel continuously variable transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112324881A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113834647A (en) * | 2021-11-29 | 2021-12-24 | 山东科技职业学院 | Computer button reliability test frock |
-
2019
- 2019-07-20 CN CN201910693001.1A patent/CN112324881A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113834647A (en) * | 2021-11-29 | 2021-12-24 | 山东科技职业学院 | Computer button reliability test frock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210205 |