CN113236723A - Stepless speed change multifunctional tooth-shaped transmission chain and control method - Google Patents
Stepless speed change multifunctional tooth-shaped transmission chain and control method Download PDFInfo
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- CN113236723A CN113236723A CN202110540169.6A CN202110540169A CN113236723A CN 113236723 A CN113236723 A CN 113236723A CN 202110540169 A CN202110540169 A CN 202110540169A CN 113236723 A CN113236723 A CN 113236723A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 78
- 230000008859 change Effects 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 6
- 230000007246 mechanism Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 230000001788 irregular Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 2
- 230000009347 mechanical transmission Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 230000008030 elimination Effects 0.000 abstract 3
- 238000003379 elimination reaction Methods 0.000 abstract 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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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
- F16H9/24—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using chains or toothed belts, belts in the form of links; Chains or belts specially adapted to such gearing
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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
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G13/00—Chains
- F16G13/02—Driving-chains
- F16G13/06—Driving-chains with links connected by parallel driving-pins with or without rollers so called open links
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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
- F16H55/02—Toothed members; Worms
- F16H55/30—Chain-wheels
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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
- F16H57/00—General details of gearing
- F16H57/12—Arrangements for adjusting or for taking-up backlash not provided for elsewhere
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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 relates to the technical field of mechanical transmission and stepless transmission design and manufacture, in particular to a stepless speed change multifunctional tooth-shaped transmission chain, which comprises a tooth-shaped chain sheet, an anti-backlash chain sheet, a limiting chain sheet, a chain sheet pin shaft, a conical disc connecting frame, a stepless speed change multifunctional tooth-shaped transmission chain, a centrifugal movable tooth group and a centrifugal movable tooth bin, wherein the conical disc connecting frame is internally provided with the centrifugal movable tooth bin, the centrifugal movable tooth group is arranged in the centrifugal movable tooth bin in a matching way, the stepless speed change multifunctional tooth-shaped transmission chain is sleeved on a plurality of centrifugal tooth groups in a matching way, and the stepless speed change multifunctional tooth-shaped transmission chain consists of the tooth-shaped chain sheet, the anti-backlash chain sheet, the limiting chain sheet and the chain sheet pin. The invention provides power required by gap elimination and unloading for the centrifugal movable gear bin through the gap elimination chain sheet on the chain, and can realize the non-load engagement and non-load engagement between the chain teeth and the centrifugal movable gear in the working process of self-adaptive gap elimination by coordinating with the centrifugal movable gear bin, thereby greatly improving the torque transmission capability and the transmission efficiency of the stepless speed change device.
Description
Technical Field
The invention relates to the technical field of design and manufacture of mechanical transmission and a continuously variable transmission, in particular to a continuously variable multifunctional tooth-shaped transmission chain.
Background
The international prior stepless speed changer adopts the technical routes of friction traction transmission and hydraulic transmission, and can be widely applied by virtue of excellent performance and reliability after years of research, perfection and promotion. Intellectual property and production capacity of key parts are mastered in developed countries in Europe, America and Japan and Korean.
At present, foreign technologies are mostly provided or digested on passenger vehicles in China
The automatic transmissions and the stepless transmissions are manufactured, wherein the automatic transmissions are more, commercial vehicles and off-road working machines are in the development and application stage of load power shifting (stepped friction traction transmission), and the main technical source is also the mature European and American technology.
The continuously variable transmission, matched to the engine combination, will provide the best economy at the best dynamic demands. The products have the defects of small transmission torque, low efficiency, high manufacturing difficulty, high cost and the like due to the limitation of the technical route. These problems are mainly caused by the influence of the drive chain in the continuously variable transmission employed.
Disclosure of Invention
The invention aims to provide a stepless speed change multifunctional tooth-shaped transmission chain.
In order to achieve the purpose, the invention adopts the following technical scheme:
the stepless speed change multifunctional tooth-shaped transmission chain comprises tooth-shaped chain pieces, clearance eliminating chain pieces, limiting chain pieces, chain piece pin shafts, a conical disc connecting frame, a stepless speed change multifunctional tooth-shaped transmission chain, centrifugal movable tooth groups and centrifugal movable tooth bins, wherein the centrifugal movable tooth bins are arranged in the conical disc connecting frame, the centrifugal movable tooth groups are arranged in the centrifugal movable tooth bins in a matching mode, the stepless speed change multifunctional tooth-shaped transmission chain is sleeved on the centrifugal movable tooth groups in a matching mode, and the stepless speed change multifunctional tooth-shaped transmission chain is composed of the tooth-shaped chain pieces, the clearance eliminating chain pieces, the limiting chain pieces and the chain piece pin shafts.
Furthermore, the tooth-shaped chain sheet on the stepless speed change multifunctional tooth-shaped transmission chain forms meshing transmission by the chain teeth and the centrifugal tooth group on the stepless speed change wheel, and the size of a meshing pitch circle is changed along with the position change of the centrifugal movable teeth.
Furthermore, the curve shape of the anti-backlash boss on the anti-backlash chain piece is designed according to the position requirements of engagement and disengagement.
Furthermore, the chain sheet pin shaft is composed of two pin shafts with different cross sections, two ends of the chain sheet pin shaft are inclined planes, and the inclined angle of the inclined planes is consistent with the cone angle of the conical disc of the whole device.
Furthermore, the limiting chain sheet is a U-shaped chain sheet and is arranged at two ends of the chain sheet pin shaft.
Further, the control method of the stepless speed change multifunctional tooth-shaped transmission chain comprises the following steps:
A) the centrifugal tooth group automatically enters a tooth space formed by two adjacent tooth-shaped chain sheets under the action of centrifugal force, a gap between the centrifugal tooth group and a chain tooth is eliminated through a gap eliminating mechanism, a non-load meshing state is entered, load transmission is prepared, and load transmission is started after the front group of meshing teeth is unloaded and separated;
B) when the anti-backlash chain sheet gradually enters into an angle wrapping area of the chain wheel, the radial component force generated by the tension force of the anti-backlash chain sheet is gradually transmitted to the centrifugal movable tooth bin, so that the centrifugal movable tooth bin moves along the theta angle direction and generates certain transverse displacement at the same time, and a centrifugal movable tooth group positioned in the centrifugal movable tooth bin is attached to the chain teeth to achieve the effect of eliminating the meshing clearance (delta is 0);
C) when the meshing motion is finished, the anti-backlash chain sheet simultaneously unloads the pressure on the centrifugal movable tooth bin, so as to achieve the unloading purpose; the no-load engagement and the no-load engagement can improve the transmission stability and the service life of the continuously variable transmission; the thickness of the anti-backlash chain sheet is equal to that of the tooth-shaped chain sheet, the number of the anti-backlash chain sheets is selected by considering the structure of the centrifugal movable tooth bin, and the curve shape of the anti-backlash boss is designed according to the position requirements of engagement in and engagement out (irregular curved surface).
The invention has the beneficial effects that:
the invention is based on the chain transmission principle, changes the structure of the common chain sheet, organically integrates the chain sheet and the power transmission teeth into a whole, and arranges a power special chain sheet for providing the work of the self-adaptive type canceling mechanism for the non-load meshing and non-load meshing of the centrifugal movable teeth on the special part of the chain for the self-adaptive type backlash eliminating centrifugal movable tooth stepless speed change device; the problem of limited transmission torque caused by a friction transmission mode of an existing Continuously Variable Transmission (CVT) transmission chain is solved, original friction transmission is changed into variable-diameter tooth meshing transmission, and the torque transmission capacity and transmission efficiency of the continuously variable transmission are greatly improved, so that the performance of the continuously variable transmission is fundamentally improved, and the possibility of realizing the continuously variable transmission of heavy mobile machinery is provided. .
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a centrifugal moving tooth set and its connecting parts according to the present invention;
FIG. 3 is a schematic structural diagram of a multi-functional tooth-shaped transmission chain with stepless speed change according to the present invention;
FIG. 4 is a schematic sectional view taken along line A-A of FIG. 3 according to the present invention.
In the figure:
1 tooth-shaped chain sheet, 2 clearance-eliminating chain sheets, 3 spacing chain sheets, 4 chain sheet pin shafts, 5 conical disc connecting frames, 6 stepless speed change multifunctional tooth-shaped transmission chains, 7 centrifugal movable tooth groups and 8 centrifugal movable tooth bins.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some components of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product.
Referring to fig. 1, 2, 3 and 4, the stepless speed change multifunctional tooth-shaped transmission chain comprises a tooth-shaped chain sheet 1, an anti-backlash chain sheet 2, a limiting chain sheet 3, a chain sheet pin shaft 4, a conical disc connecting frame 5, a stepless speed change multifunctional tooth-shaped transmission chain 6, a centrifugal movable tooth group 7 and a centrifugal movable tooth bin 8, wherein the conical disc connecting frame 5 is internally provided with the centrifugal movable tooth bin 8, the centrifugal movable tooth group 7 is arranged in the centrifugal movable tooth bin 8 in a matching way, the stepless speed change multifunctional tooth-shaped transmission chain 6 is sleeved on a plurality of centrifugal tooth groups 7 in a matching way, the stepless speed change multifunctional tooth-shaped transmission chain 6 consists of the tooth-shaped chain sheet 1, the anti-backlash chain sheet 2, the limiting chain sheet 3 and a chain sheet pin shaft 4, the stepless speed change multifunctional tooth-shaped transmission chain is applied to the self-adaptive anti-backlash centrifugal movable tooth stepless speed change device, the chain transmission principle is used as a basis, the structure of the common chain sheet is changed, and the chain sheet and the power transmission are organically integrated, and a special power chain sheet for providing the work of the self-adaptive type gap-eliminating mechanism for the unloaded engagement and the unloaded engagement of the centrifugal moving teeth is arranged on the special part of the chain for the self-adaptive gap-eliminating centrifugal moving tooth stepless speed change device.
The tooth-shaped chain sheet 1 on the stepless speed change multifunctional tooth-shaped transmission chain 6 forms meshing transmission by the chain teeth and the centrifugal tooth group 7 on the stepless speed change wheel, the size of a meshing pitch circle is changed along with the position change of the centrifugal movable teeth, the stepless speed change of the stepless speed change device is realized, and the tooth shape of the tooth-shaped chain sheet is an inverted trapezoid (also can be a regular trapezoid or a rectangle).
The curve shape of the anti-backlash boss on the anti-backlash chain sheet 2 is designed according to the position requirements of engagement and disengagement, the anti-backlash chain sheet 2 on the stepless speed change multifunctional tooth-shaped transmission chain 6 provides power required by anti-backlash and unloading for the centrifugal movable tooth bin 8 while transmitting load, and the anti-backlash chain sheet and the centrifugal movable tooth bin 8 can move in a coordinated manner to realize the non-load engagement and the non-load engagement between the chain teeth and the centrifugal movable teeth of the self-adaptive anti-backlash centrifugal movable tooth stepless speed change device in the working process.
The chain sheet pin shaft 4 is composed of two pin shafts with opposite cross sections, two ends of the chain sheet pin shaft 4 are inclined planes, the inclined angles of the inclined planes are consistent with the cone angle of a conical disc of the whole device, and the two pin shafts can rotate relatively in a chain hole after a transmission chain enters a chain wheel angle wrapping area.
The limiting chain pieces 3 are U-shaped chain pieces and are arranged at two ends of the chain piece pin shaft 4, and when the limiting chain pieces participate in load transfer, the limiting function of various chain pieces on the chain piece pin shaft 4 is mainly achieved, and the chain pieces can not fall off along two ends of the chain piece pin shaft 4.
The working steps of the stepless speed change multifunctional tooth-shaped transmission chain are as follows:
A) the centrifugal tooth group 7 automatically enters a tooth space formed by two adjacent tooth-shaped chain sheets 1 under the action of centrifugal force, a gap between the centrifugal tooth group 7 and a chain tooth is eliminated through a gap eliminating mechanism, a no-load meshing state is entered, load transmission is prepared, and after a current group of meshing teeth is unloaded and separated, load transmission is started;
B) when the anti-backlash chain sheet 2 gradually enters into an angle wrapping area of the chain wheel, the radial component force generated by the tension force of the anti-backlash chain sheet is gradually transmitted to the centrifugal movable tooth bin 8, so that the centrifugal movable tooth bin 8 generates certain transverse displacement while moving along the theta angle direction, and the centrifugal tooth group 7 positioned in the centrifugal movable tooth bin 8 is attached to the chain tooth, thereby achieving the effect of eliminating the meshing clearance (delta is 0);
C) when the meshing motion is finished, the anti-backlash chain sheet 2 simultaneously unloads the pressure on the centrifugal movable tooth bin 8, so as to achieve the unloading purpose; the no-load engagement and the no-load engagement can improve the transmission stability and the service life of the continuously variable transmission; the thickness of the anti-backlash chain sheet 2 is equal to that of the tooth-shaped chain sheet 1, the number of the anti-backlash chain sheets is selected by considering the structure of the centrifugal movable tooth bin 8, and the curve shape of the anti-backlash lug boss is designed according to the position requirements of engagement and disengagement (irregular curve surface).
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (6)
1. The stepless speed change multifunctional tooth-shaped transmission chain is characterized by comprising tooth-shaped chain pieces (1), anti-backlash chain pieces (2), limiting chain pieces (3), chain piece pin shafts (4), a conical disc connecting frame (5), a stepless speed change multifunctional tooth-shaped transmission chain (6), centrifugal tooth groups (7) and centrifugal movable tooth bins (8), wherein the centrifugal movable tooth bins (8) are arranged in the conical disc connecting frame (5), the centrifugal movable tooth groups (7) are arranged in the centrifugal movable tooth bins (8) in a matching mode, the stepless speed change multifunctional tooth-shaped transmission chain (6) is sleeved on the centrifugal tooth groups (7) in a matching mode, and the stepless speed change multifunctional tooth-shaped transmission chain (6) is composed of the tooth-shaped chain pieces (1), the anti-backlash chain pieces (2), the limiting chain pieces (3) and the chain piece pin shafts (4).
2. The continuously variable multifunctional toothed transmission chain according to claim 1, characterized in that the toothed chain plates (1) on the continuously variable multifunctional toothed transmission chain (6) form meshing transmission with the set of centrifugal teeth (7) on the continuously variable transmission wheel with the teeth, and the size of the meshing pitch circle is changed with the position of the centrifugal teeth.
3. The stepless speed change multifunctional tooth-shaped transmission chain according to claim 1, is characterized in that the curve shape of the backlash eliminating boss on the backlash eliminating chain sheet (2) is designed according to the position requirements of engagement and disengagement.
4. The stepless speed change multifunctional tooth-shaped transmission chain according to claim 1, is characterized in that the chain sheet pin shaft (4) is composed of two-piece pin shafts with different cross sections, and both ends of the chain sheet pin shaft (4) are inclined planes, and the inclined angles of the inclined planes are consistent with the cone angle of a conical disc of the whole device.
5. The multifunctional tooth-shaped transmission chain with stepless speed change according to claim 1 is characterized in that the limiting chain sheet (3) is a U-shaped chain sheet and is arranged at two ends of a chain sheet pin shaft (4).
6. A transmission control method of a continuously variable multi-function tooth drive chain according to any one of claims 1 to 5, characterized in that:
A) the centrifugal tooth group (7) automatically enters a tooth space formed by two adjacent tooth-shaped chain sheets (1) under the action of centrifugal force, a gap between the centrifugal tooth group (7) and a chain tooth is eliminated through a gap eliminating mechanism, a non-load meshing state is entered, the load is ready to be transmitted, and the load transmission is started after the previous group of meshing teeth is unloaded and separated;
B) when the anti-backlash chain sheet (2) gradually enters into an angle wrapping area of a chain wheel, a radial component force generated by the tension force of the anti-backlash chain sheet is gradually transmitted to the centrifugal movable tooth bin (8), so that the centrifugal movable tooth bin (8) generates certain transverse displacement while moving along the theta angle direction, and an centrifugal tooth group (7) positioned in the centrifugal movable tooth bin (8) is attached to the chain teeth to achieve the effect of eliminating the meshing clearance (delta is 0);
C) when the meshing motion is finished, the anti-backlash chain sheet (2) simultaneously unloads the pressure to the centrifugal movable tooth bin (8) to achieve the unloading purpose; the no-load engagement and the no-load engagement can improve the transmission stability and the service life of the continuously variable transmission; the thickness of the anti-backlash chain sheet (2) is equal to that of the tooth-shaped chain sheet (1), the number of the anti-backlash chain sheets is selected by considering the structure of the centrifugal movable tooth bin (8), and the curve shape of the anti-backlash lug boss is designed according to the position requirements of engagement and disengagement (irregular curved surface).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110540169.6A CN113236723A (en) | 2021-05-18 | 2021-05-18 | Stepless speed change multifunctional tooth-shaped transmission chain and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110540169.6A CN113236723A (en) | 2021-05-18 | 2021-05-18 | Stepless speed change multifunctional tooth-shaped transmission chain and control method |
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| CN113236723A true CN113236723A (en) | 2021-08-10 |
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| CN202110540169.6A Pending CN113236723A (en) | 2021-05-18 | 2021-05-18 | Stepless speed change multifunctional tooth-shaped transmission chain and control method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110039643A1 (en) * | 2008-04-16 | 2011-02-17 | Jtekt Corporation | Power transmission chain and power transmission apparatus including same |
| JP2011163461A (en) * | 2010-02-10 | 2011-08-25 | Nissan Motor Co Ltd | Continuously variable transmission mechanism |
| US20140045633A1 (en) * | 2012-08-10 | 2014-02-13 | Jtekt Corporation | Chain for continuously variable transmission |
| CN104214274A (en) * | 2013-05-31 | 2014-12-17 | 王国斌 | Method for designing chain without welding spot and riveting spot |
| JP2015045344A (en) * | 2013-08-27 | 2015-03-12 | 日産自動車株式会社 | Continuously variable transmission mechanism |
| CN108730497A (en) * | 2017-04-17 | 2018-11-02 | 王国斌 | A kind of mechanism eliminating oscillating tooth slide plate engagement backlash and the design method for extending the engaging tooth service life |
-
2021
- 2021-05-18 CN CN202110540169.6A patent/CN113236723A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110039643A1 (en) * | 2008-04-16 | 2011-02-17 | Jtekt Corporation | Power transmission chain and power transmission apparatus including same |
| JP2011163461A (en) * | 2010-02-10 | 2011-08-25 | Nissan Motor Co Ltd | Continuously variable transmission mechanism |
| US20140045633A1 (en) * | 2012-08-10 | 2014-02-13 | Jtekt Corporation | Chain for continuously variable transmission |
| CN104214274A (en) * | 2013-05-31 | 2014-12-17 | 王国斌 | Method for designing chain without welding spot and riveting spot |
| JP2015045344A (en) * | 2013-08-27 | 2015-03-12 | 日産自動車株式会社 | Continuously variable transmission mechanism |
| CN108730497A (en) * | 2017-04-17 | 2018-11-02 | 王国斌 | A kind of mechanism eliminating oscillating tooth slide plate engagement backlash and the design method for extending the engaging tooth service life |
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Application publication date: 20210810 |