LU101225B1 - Electromagnetic hybrid ringless planet gear changing system - Google Patents
Electromagnetic hybrid ringless planet gear changing system Download PDFInfo
- Publication number
- LU101225B1 LU101225B1 LU101225A LU101225A LU101225B1 LU 101225 B1 LU101225 B1 LU 101225B1 LU 101225 A LU101225 A LU 101225A LU 101225 A LU101225 A LU 101225A LU 101225 B1 LU101225 B1 LU 101225B1
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- Prior art keywords
- gear
- electromagnetic
- gears
- ringless
- output
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
- H02K49/102—Magnetic gearings, i.e. assembly of gears, linear or rotary, by which motion is magnetically transferred without physical contact
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Structure Of Transmissions (AREA)
- Retarders (AREA)
Abstract
The present invention discloses an electromagnetic hybrid ringless planet gear changing system, including an input shaft on which an input end planet carrier and a plurality of electromagnetic gears are mounted, wherein the plurality of electromagnetic gears are respectively controlled by corresponding switches to work or not; each electromagnetic gear and a plurality of evenly distributed output magnetic gears form a group, and centers of a plurality of output magnetic gears in different groups and in the same direction are connected to the same planet gear rotating shaft I on the same straight line, the planet gear rotating shaft I is connected to an output end planet carrier, the input end planet carrier is connected to a planet gear rotating shaft II, and the planet gear rotating shaft II is eccentrically connected to the plurality of output magnetic gears in different groups and in the same direction.
Description
ELECTROMAGNETIC HYBRID RINGLESS PLANET GEAR CHANGING SYSTEM
Field of the Invention
The present invention relates to an electromagnetic hybrid ringless planet gear changing system.
Background of the Invention A speed changer is a mechanism used for changing the rotating speed and torque from an input end, which can change the transmission ratio of an output shaft to an input shaft. The traditional speed changer generally employs gear transmission, and has certain deficiencies. On the one hand, common gear transmissions will generate vibration, noise, wear and heat phenomena due to their transmission characteristics, and dust, powder and the like will affect the lubrication performance. On the other hand, the common gear transmissions have certain deficiencies in terms of load carrying capacity, output torque, output efficiency, reliability, etc. The design objective of the present invention is to improve these defects of the speed changer.
Planet gears are widely applied to aspects of improving load carrying capacity, output torque and output efficiency. Compared with common gear sets, the planet gears have some outstanding advantages, for example, compact structure, small volume, high loading bearing capacity, high transmission efficiency, etc., and can achieve movement with large transmission ratio. By using these advantages, using the planet gears to replace common gears can effectively improve the performance of a speed changing box. The planet gear usually adopts the 2K-H planet transmission technology, and is most typically composed of several structures including sun gears, planet gears, gear rings, planet carriers, etc. In such a structure, the gear ring is an internal gear, which functions to be meshed with the planet gear. However, the error of the gear ring is an important factor causing the error of the planet gear. In order to ensure the precision of operation of the planet gear, it is usually required that the internal gear has higher machining precision, which increases the difficulty of production and machining. A magnetic gear is a new gear technology, and it can be made, according to needs, into either a common magnetic gear with permanent magnets (such as the gear on the right of FIG. 1) or an electromagnetic gear (such as the gear on the left of FIG. 1) according to the principle of electromagnetic induction. As shown in FIG. 1, a drive gear and a load gear are moved by the opposite attraction principle of magnets. No mechanical contact occurs between the magnetic gears, thus reducing the vibration and noise of a transmission mechanism. The magnetic gear transmits the movement and power to a closed space through the magnetic field of the magnetic material, which increases the flexibility of the design. The magnetic gear does not need to consider the contact friction, and does not require lubrication, thus not only being clean and environment-friendly, but also saving energy and reducing maintenance costs. The magnetic gear is not damaged when overloaded, and has a function of overload self-protection. The permanent magnet surface does not require fine machining which reduces the requirements for the production process. No obvious impact is generated in the moving process.
Summary of the Invention
In order to overcome the deficiencies of the mechanical gear speed changer, the present invention provides a design solution of an electromagnetic hybrid ringless planet gear changing system design, which is of great significance for the development of planet gears and electromagnetic gears and the development of the changing system.
In order to achieve the above objectives, the present invention adopts the following technical solution:
An electromagnetic hybrid ringless planet gear changing system includes an input shaft on which an input end planet carrier and a plurality of electromagnetic gears are mounted, wherein the plurality of electromagnetic gears are respectively controlled by corresponding switches to work or not; each electromagnetic gear and a plurality of evenly distributed output magnetic gears form a group, and centers of a plurality of output magnetic gears in different groups and in the same direction are connected to the same planet gear rotating shaft I on the same straight line, the planet gear rotating shaft I is connected to an output end planet carrier, the input end planet carrier is connected to a planet gear rotating shaft II, and the planet gear rotating shaft II is eccentrically connected to the plurality of output magnetic gears in different groups and in the same direction.
Further, the plurality of electromagnetic gears and the plurality of output magnetic gears form different transmission ratios.
Further, one end of the input shaft is mounted on a frame by a bearing, and the other end of the input shaft is mounted on the output end planet carrier by a bearing.
Further, an output shaft end of the output end planet carrier is also mounted on the frame by a bearing.
Further, the present invention can obtain four different transmission ratio outputs, and the speed changing portion is controlled by turning on the switch to make the corresponding electromagnetic gear work..
Further, the center distances of the electromagnetic gear and the output magnetic gears in each group in the present invention are the same.
Further, each group of output magnetic gears are evenly distributed on the circumferential direction along the corresponding electromagnetic gears thereof. Further, the input shaft is processed into a hollow state and perforated respectively at electromagnetic gear mounting positions for mounting and connecting wires.
Further, the plurality of planet gear rotating shafts I are connected to the same output end planet carrier, and the plurality of planet gear rotating shaft II are connected to the same input end planet carrier.
Further, two wires on each electromagnetic gear coil are both connected to electric brushes, wherein brushes of one wire are connected to the same conductive slip ring, the conductive slip ring is connected to one pole of a power source, brushes of the other wire are respectively connected to one conductive slip ring, each conductive slip ring is connected to the other pole of the power source through a wire, and a switch is mounted on each of the formed loops; electric conduction and rotation can be achieved through movement of the brushes on the conductive slip rings to achieve a control function.
The input gear of the electromagnetic hybrid gear portion of the present invention is manufactured into an electromagnetic gear with evenly alternated N poles and S poles by using an electromagnetic gear through a winding direction, and the output gear is manufactured into a common magnetic gear with evenly alternated N poles and S poles by using permanent magnets.
The present invention has the following advantages: 1. by replacing the function of an outer gear ring with the function of the two planet carriers of the ringless planet gear, the movement of the ringless planet gear is realized, the movement precision is improved, and the error generated by the gear ring is avoided; 2. the ringless planet gear maintains the original advantages of the planet gear, such as compact structure, small size, capability of achieving a large transmission ratio, etc.; 3. no mechanical contact occurs between the electromagnetic gear and the magnetic gear, which reduces the vibration and noise of the transmission mechanism., and the gears can realize self-protection when overloaded and are not easy to damage; 4. cleanness and environment protection are achieved, and the magnetic gear and the electromagnetic gear do not require lubrication, thus avoiding pollution of lubricating oil; 5. the permanent magnet surface of the magnetic gear does not require fine machining, which reduces requirements for the production process; 6. the number of cores and the number of magnetic poles can be easily adjusted, it is not necessary to consider the influence of the modulus of mechanical gears, and it is convenient to change the transmission ratio; 7. the control of the speed changer is relatively convenient, and speed changing can be realized just by controlling the corresponding switch.
Brief Descriptions of the Drawings
The accompanying drawings constituting a part of the present application are intended to provide further understanding of the present application, and the illustrative embodiments of the present application and the illustration thereof are intended to interpret the present application and do not constitute improper limitation to the present application. FIG. 1 is a structural view showing that a magnetic gear is meshed with an electromagnetic gear; FIG. 2 is a schematic diagram of the work of the present invention; FIG. 3 is a structural schematic view of the present invention; FIG. 4 is an enlarged schematic view of a steering gear in FIG. 2; FIG. 5 is a side view. in which: 1 input shaft; 2 frame bearing; 3 frame; 4 input end planet carrier; 5 planet gear rotating shaft II; 6 output magnetic gear E; 7 output magnetic gear F; 8 output magnetic gear G; 9 output magnetic gear H; 10 planet gear rotating shaft I; 11 output planet carrier; 12 bearing; 13 power source; 14 switch; 15 electric brush and conductive slip ring; 16 frame; 17 electromagnetic gear D; 18 electromagnetic gear C; 19 electromagnetic gear B; and 20 electromagnetic gear A.
Detailed Description of the Embodiments
It should be noted that the following detailed description is exemplary and is intended to provide a further description of the present application. All technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical filed to which the present application belongs, unless otherwise indicated.
It should be noted that the terms used here are merely used for describing specific embodiments, but are not intended to limit the exemplary embodiments of the present invention. As used herein, unless otherwise clearly stated in the context, singular forms are also intended to include plural forms. In addition, it also should be understood that when the terms "comprise" and/or "include" are used in the description, it indicates the presence of features, steps, operations, devices, components, and/or combinations thereof.
As described in Background of the Invention, there are deficiencies in the prior art. In order to solve the above technical problems, the present application provides an electromagnetic hybrid ringless planet gear changing system.
As shown in FIG. 1, the magnetic gear employed by the present invention is a new gear technology, and it can be manufactured, according to needs, into either a common magnetic gear (such as the gear on the right of FIG. 1) by using permanent magnets or an electromagnetic gear (such as the gear on the left of FIG. 1) according to the principle of electromagnetic induction. As shown in FIG. 1, a drive gear and a load gear are moved by the opposite attraction principle of magnets. No mechanical contact occurs between the magnetic gears, thus reducing the vibration and noise of a transmission mechanism. The magnetic gear transmits the movement and power to a closed space through the magnetic field of the magnetic material, which increases the flexibility of the design. The magnetic gear does not need to consider the contact friction, and does not require lubrication, thus not only being clean and environment-friendly, but also saving energy and reducing maintenance costs. The magnetic gear is not damaged when overloaded, and has an overload self-protection function. The surface of a permanent magnet does not require fine machining, and reduces the requirements for the production process. No obvious impact is generated in the moving process.
According to the present invention, the input shaft inputs a certain rotating speed, and four electromagnetic gears are controlled respectively by four switches Kl, K2, K3, K4 to work. The electromagnetic gears work to drive the common magnetic gears at the output end. The rotating speed of the output shaft changes along with different gear ratios of the input gears and their corresponding output gears to realize variation of the rotating speeds at the five gears and implement the function of the speed changer.
The input gear of the electromagnetic hybrid gear portion of the present invention is manufactured into an electromagnetic gear with evenly alternated N poles and S poles by using an electromagnetic gear through a winding direction, and the output gear is manufactured into a common magnetic gear with evenly alternated N poles and S poles by using a permanent magnet. The electromagnetic gear is designed to enable the numbers of magnetic poles (i.e., numbers of teeth) of the four input gears to be 8, 12, 16 and 16 respectively by changing the numbers of the cores and the coils. For the common magnetic gears, the distribution of the permanent magnets is adjusted to enable the numbers of magnetic poles (i.e., the numbers of teeth) of corresponding output gears are 16, 16, 16 and 8. The gear ratios of the four pairs of electromagnetic gears and common gears are respectively 1:2, 3:4, 1:1 and 2:1.
In the solution, the input shaft will drive wires to rotate during its rotation, and this problem is solved through the steering device as shown in FIG. 3. The wires are connected to an electric brush, the electric brush is connected to one conductive slip ring, electric conduction and rotation can be realized through movement of the electric brush on the coils, and then the coils are connected with the switches to realize the control function.
As shown in FIG. 2, the ringless planet gear portion is designed by replacing the traditional 2K-H planet gear with a double planet carrier. The principle of the ringless planet gear is as shown in FIG. 2, gear S is a sun gear, gear P is a planet gear, and Q1 and Q2 are two planet carriers respectively. Two mounting holes are machined on the planet gear P and are connected to the two planet carriers respectively. In the present invention, the sun gear S is used as an input to drive Q1 and Q2 to move, Q2 is used as an output of the output end planet carrier, and Q1 supports the input end planet carrier, without applying additional external force.
In the present invention, one of the two mounting holes of the planet gear P is located at the center position for mounting the output end planet carrier Q2, and the other one has a certain eccentric distance with the planet carrier for mounting the input end planet carrier Ql. As the mounting holes are eccentric, the center of rotation of Q1 is not concentric with the sun gear S, the eccentric distance between Ql and S is equal to the distance of the two machined mounting holes of the planet gear P. In the design of the present invention, each sun gear needs to mesh three planet gears spaced by 120 degrees to ensure smooth movement, that is, the planet carrier also needs to be connected to the three planet gears at the same time. Therefore, a hollow circle is machined at the center position of the input end planet carrier Ql to adapt to the eccentricity during the movement and avoid interference with the input shaft. The output end planet carrier Q2 is connected to the mounting hole at the center position, so that Q2 has the same center of rotation as the input shaft.
As shown in FIG. 3, the input shaft 1 is processed into a hollow state and perforated respectively at electromagnetic gear mounting positions for mounting and connecting the wires.
The specific structure is as follows:
The present invention includes an input shaft 1 on which an input end planet carrier 3 and four electromagnetic gears (an electromagnetic gear D 17, an electromagnetic gear C 18, an electromagnetic gear B 19, an electromagnetic gear A 20) are mounted, wherein the four electromagnetic gears are respectively controlled by corresponding switches (Kl, K2, K3, K4) to work or not; each electromagnetic gear and a plurality of evenly distributed output magnetic gears form a group, and centers of four output magnetic gears (an output magnetic gear E 6, an output magnetic gear F 7, an output magnetic gear G 8, and an output magnetic gear H 9) in different groups and in the same direction are connected to the same planet gear rotating shaft I 10 on the same straight line, the planet gear rotating shaft 110 is connected to an output end planet carrier, the input end planet carrier is connected to a planet gear rotating shaft II15, and the planet gear rotating shaft II 15 is eccentrically connected to the four output magnetic gears in different groups and in the same direction.
The plurality of electromagnetic gears and the plurality of output magnetic gears form different transmission ratios.
One end of the input shaft 1 is mounted on a frame 3 by a bearing 2, and the other end of the input shaft 1 is mounted on the output end planet carrier 11 by a bearing 12. An output shaft end of the output end planet carrier 11 is also mounted on the frame 16 by a bearing.
The present invention can obtain four different transmission ratio outputs, and the speed changing portion is controlled by turning on the switch to make the corresponding electromagnetic gear work.. The center distances of the electromagnetic gear and the output magnetic gears in each group in the present invention are the same. Each group of output magnetic gears are evenly distributed on the circumferential direction along the corresponding electromagnetic gears thereof.
The input shaft 1 is processed into a hollow state and perforated respectively at electromagnetic gear mounting positions for mounting and connecting wires.
The plurality of planet gear rotating shafts I are connected to the same output end planet carrier, and the plurality of planet gear rotating shaft II are connected to the same input end planet carrier.
Two wires on each electromagnetic gear coil are both connected to electric brushes, wherein brushes of one wire are connected to the same conductive slip ring, the conductive slip ring is connected to one pole of a power source, brushes of the other wire are respectively connected to one conductive slip ring, each conductive slip ring is connected to the other pole of the power source through a wire, and a switch 14 (Kl, K2, K3, K4) is mounted on each of the formed loops; electric conduction and rotation can be achieved through movement of the brushes on the conductive slip rings to achieve a control function.
The specific structures of the electric brush and conductive slip ring 15 are as shown in the figures.
In order to solve the problem that the input end planet carrier 4 is eccentric in the movement process, a round hole for preventing interference is machined at the center of the planet carrier to avoid interference between the planet carrier and the input end. The speed changing portion of the present invention can achieve four different transmission ratio outputs. The speed changing portion is controlled through a power-on switch. In a power-off state, the electromagnetic gear does generate magnetic force, and will not drive the common magnetic gear. When the speed changer needs to work at a certain transmission ratio, the electromagnetic gear is powered on through a corresponding switch to work so as to drive the common magnetic gear by using magnetic force. The gear ratios of each pair of the electromagnetic gear and the common gear are respectively 1:2, 3:4, 1:1 and 2:1, so as to achieve the function of different transmission ratio outputs of the output planet carrier.
The gear change is specifically achieved through the following method.
Zero gear: when the speed changer is in a zero gear state, four switches Kl, K2, K3 and K4 are all disconnected, and the four electromagnetic gears are not working, resulting in that the input shaft is idle and the output rotating speed of the output planet carrier is 0.
First gear: when the speed changer is in a first gear state, the switch K4 is turned on, while Kl, K2 and K3 are disconnected, the electromagnetic gear A works to drive the output common magnetic gear E to move, the gear ratio of the electromagnetic gear A to the common magnetic gear E is 1:2, and a low-speed output is realized.
Second gear: when the speed changer is in a second gear state, the switch K3 is turned on, while Kl, K2 and K4 are disconnected, the electromagnetic gear B works to drive the output common magnetic gear F to move, the gear ratio of the electromagnetic gear B to the common magnetic gear F is 3:4, and the output rotating speed at the second gear is increased compared with that at the first gear.
Third gear: when the speed changer is in a third gear state, the switch K 2 is turned on, while Kl, K3 and K4 are disconnected, the electromagnetic gear C works to drive the output common magnetic gear G to move, the gear ratio of the electromagnetic gear C to the common magnetic gear G is 1:1, and the output rotating speed at the third gear is further increased compared with that at the second gear.
Fourth gear: when the speed changer is in a third gear state, the switch K1 is turned on, while K2, K3 and K4 are disconnected, the electromagnetic gear D works to drive the output common magnetic gear H to move, the gear ratio of the electromagnetic gear D to the common magnetic gear H is 2:1, and the output rotating speed at the fourth gear is further increased compared with that at the third gear.
The speed changer realizes variation of different transmission ratios through the five-gear control, and can further expand variation values of the transmission ratios by assembling different proportions of input gears and output gears.
The above description is only the preferred embodiments of the present application, and is not intended to limit the present application. The person skilled in the art can make various modifications and changes to the present application. Any modifications, equivalent substitutions, improvements and the like made within the spirit and principles of the present application should be included within the scope of the present application.
Claims (10)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810022041.9A CN108206622B (en) | 2018-01-10 | 2018-01-10 | A kind of mixing of electromagnetism is without gear ring planetary gear speed-changing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| LU101225A1 LU101225A1 (en) | 2019-09-30 |
| LU101225B1 true LU101225B1 (en) | 2019-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU101225A LU101225B1 (en) | 2018-01-10 | 2018-09-29 | Electromagnetic hybrid ringless planet gear changing system |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN108206622B (en) |
| LU (1) | LU101225B1 (en) |
| WO (1) | WO2019137042A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108206622B (en) * | 2018-01-10 | 2019-08-23 | 山东大学 | A kind of mixing of electromagnetism is without gear ring planetary gear speed-changing system |
| CN108591415B (en) * | 2018-01-10 | 2020-01-21 | 山东大学 | Non-gear ring planetary magnetic gear speed change system |
| CN110048578A (en) * | 2019-04-16 | 2019-07-23 | 上海大学 | A kind of pair of rotating disc type electric machine structure |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1773144A (en) * | 2005-08-31 | 2006-05-17 | 张洪伟 | Gear type stepless speed changer |
| CN2869445Y (en) * | 2006-01-06 | 2007-02-14 | 武汉理工大学 | Power synthesis and switching device for non-gear-ring cylindrical gear planetary gear mechanism |
| JP2007244014A (en) * | 2006-03-06 | 2007-09-20 | Institute Of National Colleges Of Technology Japan | Noncontact gear by magnetism |
| CN201027918Y (en) * | 2007-03-14 | 2008-02-27 | 陈军 | Automatic speed transmission |
| CN101873053B (en) * | 2010-06-24 | 2012-02-22 | 大连理工大学 | Flexible electromagnetic coupling torque transmission method for electric automobile |
| CN101922534B (en) * | 2010-09-01 | 2013-06-19 | 覃勇 | Electromagnetic planetary gear continuously variable transmission |
| CN102220932A (en) * | 2011-04-28 | 2011-10-19 | 朱永章 | Floating plumbing body and flywheel plumbing arm self-energy generator |
| CN202172355U (en) * | 2011-07-23 | 2012-03-21 | 鞍山钦元节能设备制造有限公司 | Combined type electromagnetic speed regulation system |
| CN103219865B (en) * | 2013-04-25 | 2016-02-03 | 南京工程学院 | The control transmission mechanism of a kind of permanent magnetism and gear Composite Transmission buncher |
| JP2017036825A (en) * | 2015-08-07 | 2017-02-16 | 日本電産サンキョー株式会社 | Planetary gear speed reducer and drive mechanism |
| CN106870688A (en) * | 2015-12-12 | 2017-06-20 | 熵零技术逻辑工程院集团股份有限公司 | A kind of magnetic force planetary mechanism |
| CN108206622B (en) * | 2018-01-10 | 2019-08-23 | 山东大学 | A kind of mixing of electromagnetism is without gear ring planetary gear speed-changing system |
| CN108223722B (en) * | 2018-01-10 | 2020-09-04 | 山东大学 | Non-gear ring planet wheel speed change system and speed change method |
| CN108591415B (en) * | 2018-01-10 | 2020-01-21 | 山东大学 | Non-gear ring planetary magnetic gear speed change system |
-
2018
- 2018-01-10 CN CN201810022041.9A patent/CN108206622B/en not_active Expired - Fee Related
- 2018-09-29 LU LU101225A patent/LU101225B1/en active IP Right Grant
- 2018-09-29 WO PCT/CN2018/108527 patent/WO2019137042A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| LU101225A1 (en) | 2019-09-30 |
| WO2019137042A1 (en) | 2019-07-18 |
| CN108206622A (en) | 2018-06-26 |
| CN108206622B (en) | 2019-08-23 |
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| FG | Patent granted |
Effective date: 20191107 |