CN112324871A - Ravigna planetary gear mechanism and two rows of single-stage planetary gear series connection demonstration teaching aids - Google Patents
Ravigna planetary gear mechanism and two rows of single-stage planetary gear series connection demonstration teaching aids Download PDFInfo
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- CN112324871A CN112324871A CN202011323025.7A CN202011323025A CN112324871A CN 112324871 A CN112324871 A CN 112324871A CN 202011323025 A CN202011323025 A CN 202011323025A CN 112324871 A CN112324871 A CN 112324871A
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- 229910000831 Steel Inorganic materials 0.000 claims description 5
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- 238000003754 machining Methods 0.000 claims description 5
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- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
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- 239000007787 solid Substances 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 19
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- 230000009347 mechanical transmission Effects 0.000 description 1
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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
- 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
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/202—Transmissions using gears with orbital motion characterised by the type of Ravigneaux set
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Abstract
The invention discloses a Ravigneaux planetary gear mechanism and two rows of single-stage planetary gear series connection demonstration teaching aid which comprises a base, an upright column, a transverse shaft, an A-surface component and a B-surface component, wherein the upright column and the transverse shaft are respectively arranged in a cylindrical shape, the upright column is vertically and fixedly connected to the upper wall of the base, the transverse shaft is vertically and fixedly connected to the upper end of the upright column, the A-surface component and the B-surface component are respectively and vertically and fixedly connected to two ends of the transverse shaft, and the A-surface component and the B-surface component are respectively a two rows of single-stage planetary gear series connection mechanism and a. The invention belongs to the field of gear transmission machinery teaching aids, and particularly provides a Ravigneaux planetary gear mechanism and two rows of single-stage planetary gear series connection demonstration teaching aid which integrates a Ravigneaux mechanism and two rows of single-stage planetary gear series connection mechanisms, is precise in structure, stable in transmission, long in service life, high in teaching efficiency, high in practicability, simple to operate and low in cost.
Description
Technical Field
The invention belongs to the field of gear transmission machinery teaching aids, and particularly relates to a Ravigneaux planetary gear mechanism and two rows of single-stage planetary gears which are connected in series for demonstrating teaching.
Background
In some specialized classes of machinery, such as "mechanical principle" and "automobile transmission", it is necessary to learn the structural composition, transmission characteristics, and calculation of different transmission ratios under speed change conditions of the planetary gear mechanism.
In order to make students understand more intuitively, teachers usually show the planet gear mechanism to the students in a real object mode, which is helpful for the students to understand the structure of the planet gear mechanism to a certain extent, but for the judgment of the transmission ratio calculation, the rotation direction and the speed increase and reduction of the gears under different speed change conditions, the students are difficult to learn and are difficult to master. Simultaneously, planetary gear mechanism demonstration teaching aid function singleness among the prior art, the demonstration of establishing ties with two rows of single-stage planetary gears in ravigna must use two different teaching aids, is unfavorable for the student to contrast and understand deeply transmission structure, and the student often hardly directly understands the gear drive ratio, causes the student to understand the difficulty, and learning efficiency is low.
Disclosure of Invention
In order to solve the existing problems, the invention provides a Ravigneaux and two-row single-stage planetary gear series mechanism demonstration teaching aid which integrates Ravigneaux and two-row single-stage planetary gear series mechanisms, has the advantages of precise structure, stable transmission, long service life, high teaching efficiency, high practicability, simple operation and low cost.
The technical scheme adopted by the invention is as follows: the invention relates to a ravigneaux planetary gear mechanism and two rows of single-stage planetary gear series connection demonstration teaching aid, which comprises a base, an upright post, a cross shaft, an A-surface component and a B-surface component, wherein the upright post and the cross shaft are respectively arranged in a cylindrical shape, the upright post is vertically and fixedly connected with the upper wall of the base, the cross shaft is vertically and fixedly connected with the upper end of the upright post, the A-surface component and the B-surface component are respectively and vertically and fixedly connected with two ends of the cross shaft, the A-surface component and the B-surface component are respectively a two rows of single-stage planetary gear series connection mechanism and a ravigneaux planetary gear mechanism, the ravigneaux planetary gear mechanism and the two rows of single-stage planetary gear series connection mechanism are integrated on one device, and the A-surface component comprises an A-surface small sun gear, an A-surface large sun gear, an A-surface dial, an A-surface front-row planet carrier, an, The three-point-A-surface pointer and the four-point-A-surface pointer are fixedly connected to the three-point-A-surface rear-row planet carrier and the four-point-A-surface front-row inner gear ring, the four-point-A-surface pointer is fixedly connected to the four-point-A-surface large sun wheel, the three-point-B-surface pointer and the four-point-A-surface pointer are fixedly connected to the four-point-A-surface large sun wheel, the three-point-B-surface pointer component comprises a three-point-B-surface small sun wheel and a four-point-A-surface pointer, the three-point-A-surface pointer and the four-surface pointer are rotatably arranged at one end of a cross shaft, the large-surface-A-surface sun wheel is rotatably arranged on the outer wall of the cross shaft, the front-surface front-row inner gear ring and the rear-row inner gear ring of the A are respectively arranged on the outer wall of the small sun wheel, the front-surface front-A-row planet carrier and the rear-row inner gear ring of the A are rotatably arranged on, B face big sun gear, B face calibrated scale, B face planet carrier, B face short planet wheel, B face long planet wheel, B face internal gear ring, B face pointer one, B face pointer two and B face pointer three, B face small sun gear rotatable locate the one end of keeping away from A face small sun gear on the cross axle, B face big sun gear rotatable locate the cross axle outer wall, B face planet carrier rotatable locate the cross axle outer wall, B face calibrated scale rigid coupling locates the cross axle outer wall, B face short planet wheel and B face long planet wheel are equipped with three groups respectively, B face short planet wheel and B face long planet wheel use the centre of a circle of B face planet carrier as centre of a circle equidistant rotatable locate B face planet carrier respectively, B face internal gear ring rotatable locate each B face long planet wheel outer wall, B face pointer one, B face pointer two and B face pointer three are respectively fixed and locate on B face small sun gear, On the B-surface planet carrier and the B-surface inner gear ring, the A-surface small sun gear, the A-surface large sun gear, the A-surface front-row planet carrier, the A-surface rear-row planet carrier, the A-surface front-row inner gear ring, the A-surface rear-row inner gear ring, the A-surface pointer I, the A-surface pointer II, the A-surface pointer III, the A-surface pointer IV, the B-surface small sun gear, the B-surface large sun gear, the B-surface planet carrier, the B-surface short planet gear, the B-surface long planet gear, the B-surface inner gear ring, the B-surface pointer I, the B-surface pointer II and the B-surface pointer III can be distinguished by using different colors, so that students can conveniently.
Furthermore, the outer wall of the small sun gear on the surface B, the inner wall of the planet carrier on the surface B, the outer wall of the short planet gear on the surface B, the outer wall of the long planet gear on the surface B and the inner wall of the gear ring in the surface B are respectively provided with gear teeth.
Furthermore, the small sun gear on the B surface is externally meshed with three equally divided short planet gears on the B surface, the three equally divided short planet gears on the B surface are respectively externally meshed with three equally divided long planet gears on the B surface, and the three equally divided long planet gears on the B surface are internally meshed with the gear ring in the B surface.
Furthermore, the A-surface dial and the B-surface dial are respectively provided with digital scales and angle scales.
Further, the numerical scale value is 1 to 12.
Further, the angle scale value is 30 degrees to 360 degrees.
Furthermore, the surface A component and the surface B component are made of No. 45 steel through machining, the surfaces of the components are subjected to electroplating treatment, and the components are durable and wear-resistant and are not easy to damage in teaching demonstration.
By adopting the structure, the Ravigneaux planetary gear mechanism and the two rows of single-stage planetary gears are connected in series for demonstrating the teaching aid, and the Ravigneaux planetary gear mechanism has the following beneficial effects:
the A surface component and the B surface component are a Ravigneaux planetary gear mechanism and two rows of single-stage planetary gear series mechanisms respectively, the Ravigneaux planetary gear mechanism and the two rows of single-stage planetary gear series mechanisms are integrated on one device, the two rows of single-stage planetary gear series mechanisms are formed by connecting two single-stage planetary gear trains in series, wherein the two rows of single-stage planetary gear series mechanisms are cut open by an automatic transmission of a type of 4T-65E, the structure and the transmission principle of the planetary gear trains are comprehensively shown, the teaching device is suitable for teaching of the working principle and the mechanical structure of an automatic transmission of an automobile, various mechanical transmission working principles of the automatic transmission of the automobile are directly and clearly demonstrated, and a standard reference is provided for learning of mechanical fault judgment of the automatic transmission of the automobile.
2. Each part can be operated normally and mechanically manually, and the positions of each gear structure and each mechanical device in the part can be fully displayed.
And 3, the surface A component and the surface B component are both made of No. 45 steel through machining, and the surfaces of all internal parts are subjected to electroplating treatment, so that the surface A is durable and wear-resistant and is not easy to damage in teaching demonstration.
4. The A-surface small sun wheel, the A-surface large sun wheel, the A-surface front planet carrier, the A-surface rear planet carrier, the A-surface front inner gear ring, the A-surface rear inner gear ring, the A-surface pointer I, the A-surface pointer II, the A-surface pointer III, the A-surface pointer IV, the B-surface small sun wheel, the B-surface large sun wheel, the B-surface planet carrier, the B-surface short planet wheel, the B-surface long planet wheel, the B-surface inner gear ring, the B-surface pointer I, the B-surface pointer II and the B-surface pointer III can be distinguished by using different colors, so that students can conveniently watch the working conditions of all moving elements.
Drawings
FIG. 1 is a side schematic view of a Ravigneaux planetary gear mechanism and two rows of single-stage planetary gears in series demonstration teaching aid according to the invention;
FIG. 2 is a schematic structural diagram of an A-side assembly of a Ravigneaux planetary gear mechanism and two rows of single-stage planetary gears in series demonstration teaching aid of the invention;
FIG. 3 is a schematic structural diagram of a B-side assembly of a Ravigneaux planetary gear mechanism and two rows of single-stage planetary gears in series demonstration teaching aid of the invention;
FIG. 4 is a table showing various basic motion laws of a Ravigneaux planetary gear mechanism and two rows of single-stage planetary gears in series for a demonstration teaching aid of the two rows of single-stage planetary gears in series according to the present invention;
fig. 5 is a table showing various basic motion rules of the ravigneaux planetary gear mechanism and two rows of single-stage planetary gears which are used for demonstrating teaching the series connection of the ravigneaux planetary gear mechanism.
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings: 1. the device comprises a base, 2, a stand column, 3, a transverse shaft, 4, a surface component, 5, a surface component, 6, a surface small sun gear, 7, a surface large sun gear, 8, a surface dial, 9, a surface front row planet carrier, 10, a surface rear row planet carrier, 11, a surface front row inner gear ring, 12, a surface rear row inner gear ring, 13, a surface pointer I, 14, a surface pointer II, 15, a surface pointer III, 16, a surface pointer IV, 17, a numerical scale, 18, an angle scale, 19, a surface small sun gear, 20, a surface large sun gear, 21, a surface scale, 22, a surface planet carrier, 23, a surface short planet gear, 24, a surface long planet gear, 25, a surface inner gear ring, 26, a surface pointer I, 27, a surface pointer II, 28 and a surface pointer III.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in fig. 1 and 2, the ravigneaux planetary gear mechanism and two-row single-stage planetary gear series connection demonstration teaching aid of the invention comprises a base 1, an upright post 2, a cross shaft 3, an a-side component 4 and a B-side component 5, wherein the upright post 2 and the cross shaft 3 are respectively arranged in a cylindrical shape, the upright post 2 is vertically and fixedly connected with the upper wall of the base 1, the cross shaft 3 is vertically and fixedly connected with the upper end of the upright post 2, the a-side component 4 and the B-side component 5 are respectively and fixedly connected with the two ends of the cross shaft 3, the a-side component 4 and the B-side component 5 are respectively a two-row single-stage planetary gear series connection mechanism and a ravigneaux planetary gear mechanism, the a-side component 4 comprises an a-side small sun gear 6, an a-side large sun gear 7, an a-side dial 8, an a-side front row planet carrier 9, an a-side rear row planet carrier 10, an a-, The second A-surface pointer 14, the third A-surface pointer 15 and the fourth A-surface pointer 16, the small A-surface sun gear 6 is rotatably arranged at one end of the cross shaft 3, the large A-surface sun gear 7 is rotatably arranged on the outer wall of the cross shaft 3, the front A-surface inner gear ring 11 and the rear A-surface inner gear ring 12 are respectively arranged on the outer wall of the small A-surface sun gear 6, the front A-surface planet carrier 9 and the rear A-surface planet carrier 10 are rotatably arranged on the outer walls of the front A-surface inner gear ring 11 and the rear A-surface inner gear ring 12, the front A-surface planet carrier 9 and the rear A-surface inner gear ring 12 are fixedly connected, the rear A-surface planet carrier 10 and the front A-surface inner gear ring 11 are fixedly connected, the first A-surface pointer 13 is fixedly connected to the small A-surface sun gear 6, the second A-surface pointer 14 is fixedly connected to the front A-surface planet carrier 9 and the rear A-surface inner gear ring 12, the third A-surface pointer 15 is fixedly connected to the rear A-surface planet carrier, the fourth A-surface pointer 16 is fixedly connected to the large A-surface sun wheel 7.
The dial 8 on the surface A is provided with a numerical scale 17 and an angle scale 18, the numerical scale 17 is 1-12, and the numerical scale 18 is 30-360 degrees; the A surface component 4 is made of No. 45 steel through machining, the surface of the A surface component is subjected to electroplating treatment, and the A surface component is durable and wear-resistant and is not easy to damage in teaching demonstration.
As shown in fig. 4, according to the basic transmission law table of each gear of the two-row single-stage planetary gear series mechanism, 4 forward gears and one reverse gear are demonstrated through active and braking, and the basic transmission law of the 4 forward gears and the one reverse gear can also be demonstrated through another transmission mode of the two-row single-stage planetary gear series mechanism.
The method is characterized in that different colors are utilized to distinguish an A-surface small sun gear, an A-surface large sun gear, an A-surface front-row planet carrier, an A-surface rear-row planet carrier, an A-surface front-row inner gear ring, an A-surface rear-row inner gear ring, an A-surface pointer I, an A-surface pointer II, an A-surface pointer III, an A-surface pointer IV, a B-surface small sun gear, a B-surface large sun gear, a B-surface planet carrier, a B-surface short planet gear, a B-surface long planet gear, a B-surface inner gear ring, a B-surface pointer I, a B-surface pointer II and a B-surface pointer III, so that students can conveniently watch.
Example two
As shown in fig. 1 and 3, the ravigneaux planetary gear train and two-row single-stage planetary gear train series demonstration teaching aid of the invention comprises a base 1, an upright 2, a horizontal shaft 3, an a-side component 4 and a B-side component 5, wherein the upright 2 and the horizontal shaft 3 are respectively arranged in a cylindrical shape, the upright 2 is vertically and fixedly connected with the upper wall of the base 1, the horizontal shaft 3 is vertically and fixedly connected with the upper end of the upright 2, the a-side component 4 and the B-side component 5 are respectively and fixedly connected with the two ends of the horizontal shaft 3, the a-side component 4 and the B-side component 5 are respectively a two-row single-stage planetary gear train mechanism and a ravigneaux planetary gear train, the B-side component 5 comprises a B-side small sun gear 19, a B-side large sun gear 20, a B-side dial 21, a B-side planet carrier 22, a B-side short planet gear 23, a B-side long planet gear 24, a B-side, the small sun gear 19 of B face is rotatable to be located the one end of keeping away from the small sun gear 6 of A face on the cross axle 3, the big sun gear 20 of B face is rotatable to be located the cross axle 3 outer wall, the planet carrier 22 of B face is rotatable to be located the cross axle 3 outer wall, the outer wall of cross axle 3 is located to B face calibrated scale 21 rigid coupling, the short planet wheel 23 of B face is equipped with three groups respectively with the long planet wheel 24 of B face, the short planet wheel 23 of B face and the long planet wheel 24 of B face use the centre of a circle of the planet carrier 22 of B face as the centre of a circle equidistant rotatable the locating on the planet carrier 22 of B face respectively, ring gear 25 is rotatable to be located the long planet wheel 24 outer wall of each B face in the B face, B face pointer one 26, B face pointer two 27 and B face pointer three 28 rigid couplings are located on.
Gear teeth are respectively arranged on the outer wall of the B-surface small sun gear 19, the inner wall of the B-surface planet carrier 22, the outer wall of the B-surface short planet gear 23, the outer wall of the B-surface long planet gear 24 and the inner wall of the B-surface internal gear ring 25; the small sun gear 19 on the B surface is externally meshed with three equally divided short planet gears 23 on the B surface, the three equally divided short planet gears 23 on the B surface are respectively externally meshed with three equally divided long planet gears 24 on the B surface, and the three equally divided long planet gears 24 on the B surface are internally meshed with an internal gear ring 25 on the B surface; the dial 21 of the face B is provided with a digital scale 17 and an angle scale 18, the numerical value of the digital scale 17 is 1-12, and the numerical value of the angle scale 18 is 30-360 degrees; the B surface component 5 is made of No. 45 steel through machining, the surface of the B surface component is subjected to electroplating treatment, the B surface component is durable and wear-resistant, and the B surface component is not easy to damage in teaching demonstration.
As shown in fig. 5, the basic transmission schedules of 4 forward gears and one reverse gear are demonstrated by the active and braking according to the basic transmission schedule of each gear of the ravigneaux planetary gear mechanism.
The method is characterized in that different colors are utilized to distinguish an A-surface small sun gear, an A-surface large sun gear, an A-surface front-row planet carrier, an A-surface rear-row planet carrier, an A-surface front-row inner gear ring, an A-surface rear-row inner gear ring, an A-surface pointer I, an A-surface pointer II, an A-surface pointer III, an A-surface pointer IV, a B-surface small sun gear, a B-surface large sun gear, a B-surface planet carrier, a B-surface short planet gear, a B-surface long planet gear, a B-surface inner gear ring, a B-surface pointer I, a B-surface pointer II and a B-surface pointer III, so that students can conveniently watch.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. Ravigneaux planetary gear mechanism establishes ties with two rows of single-stage planetary gear and demonstrates teaching aid, its characterized in that: the solar cell comprises a base, an upright post, a cross shaft, an A-surface component and a B-surface component, wherein the upright post and the cross shaft are respectively arranged in a cylindrical shape, the upright post is vertically and fixedly connected to the upper wall of the base, the cross shaft is vertically and fixedly connected to the upper end of the upright post, the A-surface component and the B-surface component are respectively and fixedly connected to the two ends of the cross shaft, the A-surface component and the B-surface component are respectively a two-row single-stage planetary gear series mechanism and a Ravigneaux planetary gear mechanism, the A-surface component comprises an A-surface small sun gear, an A-surface large sun gear, an A-surface dial, an A-surface front-row planet carrier, an A-surface rear-row planet carrier, an A-surface front-row inner gear ring, an A-surface rear-row inner gear ring, an A-surface pointer I, an A-surface pointer II, an A-surface pointer III and an A-surface pointer IV, the A-surface small sun gear is rotatably arranged at one, the A-surface front-row planet carrier and the A-surface rear-row planet carrier are rotatably arranged on the outer wall of the A-surface front-row inner gear ring and the A-surface rear-row inner gear ring, the A-surface front-row planet carrier and the A-surface rear-row inner gear ring are fixedly connected, the A-surface rear-row planet carrier and the A-surface front-row inner gear ring are fixedly connected, the A-surface pointer I is fixedly connected to the A-surface small sun gear, the A-surface pointer II is fixedly connected to the A-surface front-row planet carrier and the A-surface rear-row inner gear ring, the A-surface pointer III is fixedly connected to the A-surface rear-row planet carrier and the A-surface front-row inner gear ring, the A-surface pointer IV is fixedly connected to the A-surface large sun gear, the B-surface component comprises a B-surface small sun gear, a B-surface large sun gear, a B-surface dial, a B-surface planet carrier, a B-surface short planet gear, a B-surface long planet gear, a B-surface inner gear, a B-surface pointer I, a B, the big sun gear of B face is rotatable to be located the cross axle outer wall, the cross axle outer wall is rotatable to be located to the planet carrier of B face, the cross axle outer wall is located to B face calibrated scale rigid coupling, the short planet wheel of B face is equipped with three groups respectively with the long planet wheel of B face, the short planet wheel of B face and the long planet wheel of B face use the centre of a circle of B face planet carrier respectively as the equidistant rotatable B face planet carrier of locating in the centre of a circle, the rotatable B face long planet wheel outer wall of locating of each B face of ring gear in B face, B face pointer one, B face pointer two and B face pointer three are do not solid joint locate on the little sun gear of B face, on the planet.
2. The ravigneaux planetary gear mechanism and two-row single-stage planetary gear series demonstration teaching aid of claim 1, wherein: the outer wall of the B-surface small sun gear, the inner wall of the B-surface planet carrier, the outer wall of the B-surface short planet gear, the outer wall of the B-surface long planet gear and the inner wall of the B-surface internal gear ring are respectively provided with gear teeth.
3. The ravigneaux planetary gear mechanism and two-row single-stage planetary gear series demonstration teaching aid of claim 2, wherein: the small sun gear on the B surface is externally meshed with three equally divided short planet gears on the B surface, the three equally divided short planet gears on the B surface are respectively externally meshed with three equally divided long planet gears on the B surface, and the three equally divided long planet gears on the B surface are internally meshed with the gear ring in the B surface.
4. The ravigneaux planetary gear mechanism and two-row single-stage planetary gear series demonstration teaching aid of claim 1, wherein: and the A-surface dial and the B-surface dial are respectively provided with digital scales and angle scales.
5. The Ravigneaux planetary gear mechanism and two rows of single-stage planetary gears in series demonstration teaching aid of claim 4, characterized in that: the numerical scale value is 1 to 12.
6. The Ravigneaux planetary gear mechanism and two rows of single-stage planetary gears in series demonstration teaching aid of claim 4, characterized in that: the angle scale value is 30 degrees to 360 degrees.
7. The ravigneaux planetary gear mechanism and two-row single-stage planetary gear series demonstration teaching aid of claim 1, wherein: the surface A component and the surface B component are made of No. 45 steel through machining, and the surfaces of the components are subjected to electroplating treatment.
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| CN202011323025.7A CN112324871A (en) | 2020-11-23 | 2020-11-23 | Ravigna planetary gear mechanism and two rows of single-stage planetary gear series connection demonstration teaching aids |
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| CN202011323025.7A CN112324871A (en) | 2020-11-23 | 2020-11-23 | Ravigna planetary gear mechanism and two rows of single-stage planetary gear series connection demonstration teaching aids |
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| CN204720097U (en) * | 2015-06-30 | 2015-10-21 | 西安外事学院 | Gear shift experimental provision |
| CN204732058U (en) * | 2015-05-15 | 2015-10-28 | 广州科技职业技术学院 | Planetary gear gear teaching aid |
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2020
- 2020-11-23 CN CN202011323025.7A patent/CN112324871A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN301112730S (en) * | 2009-02-27 | 2010-01-13 | 张崇信 | Planetary gear mechanism demonstration teaching aid (double row planetary gear and Ravina) |
| US20150204430A1 (en) * | 2012-09-07 | 2015-07-23 | Dana Limited | Ball type cvt with powersplit paths |
| CN204732058U (en) * | 2015-05-15 | 2015-10-28 | 广州科技职业技术学院 | Planetary gear gear teaching aid |
| CN204720097U (en) * | 2015-06-30 | 2015-10-21 | 西安外事学院 | Gear shift experimental provision |
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