CN103089953A - Line defect cycloidal gear transmission device - Google Patents
Line defect cycloidal gear transmission device Download PDFInfo
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- CN103089953A CN103089953A CN2013100341035A CN201310034103A CN103089953A CN 103089953 A CN103089953 A CN 103089953A CN 2013100341035 A CN2013100341035 A CN 2013100341035A CN 201310034103 A CN201310034103 A CN 201310034103A CN 103089953 A CN103089953 A CN 103089953A
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- line
- political loyalty
- switching political
- wheel
- input shaft
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Abstract
The invention relates to a line defect cycloidal gear transmission device for changing transmission ratios. The device comprises a box body, an eccentric input shaft, a line defect cycloidal wheel, a line defect needle wheel, column pins, an output plate and an output shaft. One section formed by the fact that the eccentric input shaft stretches into the box body through a bearing is an input shaft eccentric section. The line defect cycloidal wheel is mounted on the input shaft eccentric section through the bearing and meshed with the line defect needle wheel. The line defect needle wheel is fixedly connected with the box body. The column pins are uniformly distributed on the output plate, one ends of the column pins stretch into pin holes of the line defect cycloidal wheel for sliding, and the column pins are matched with an eccentricity of the line defect cycloidal wheel in a rolling mode. The output plate is fixed on the output shaft. The output shaft is mounted on the other side wall, opposite to the eccentric input shaft, of the box body through the bearing. The line defect cycloidal gear transmission device has the advantages that meshing number of teeth is large, and the device is large in overload capacity and long in service life.
Description
Technical field
The present invention relates to a kind of mechanical transmission fields, be specifically related to a kind of traitorous string pendulum line gear transmission device of variable ratio.
Background technique
Mechanical transmission is the rotating speed of input shaft to be transformed into the rotating speed of output shaft, realizes simultaneously the moment of torsion transmission between input shaft and output shaft.Mechanical transmission includes a plurality of gear assemblies, and these gear assemblies are coupled to each other to realize the velocity ratio be scheduled to different structures.
At present, the application of more existing transmission device with varied transmission ratios has solved some technical problems.Chinese patent literature CN201420841Y discloses a name on March 10th, 2010 and has been called " limited slip differential ", it comprises planet wheel, central gear and ring gear, three gears of this differential mechanism are non-circular planetary gear, when having relative movement between gear, the velocity ratio of former and later two rotating shafts is not keeping fixed value, but periodically change, realized like this variation of velocity ratio.The shortcoming of this structure is that the number of teeth that meshes between planet wheel and central gear is few, and overload capacity is lower.
Summary of the invention
The traitorous string pendulum line gear transmission device that the number of teeth that technical problem to be solved by this invention just is to provide a kind of engagement is many, overload capacity is strong.
technical problem to be solved by this invention is to realize by such technological scheme, it includes casing, eccentric input shaft, traitorous line cycloid wheel, traitorous line pinwheel, pin, output disc and output shaft, one section of stretching in casing by bearing of eccentric input shaft is the input shaft eccentric segment, the line cycloid wheel of switching political loyalty is arranged on the eccentric shaft part of input shaft by bearing, the line cycloid wheel of switching political loyalty and the engagement of traitorous line pinwheel, the line pinwheel of switching political loyalty is fixedly connected with casing, evenly be laid with pin on output disc, pin one end stretches into interior slip of pin-and-hole on the line cycloid wheel of switching political loyalty, roll with the bias of traitorous line cycloid wheel and match, output disc is fixedly on output shaft, the axle shaft is arranged on another sidewall of casing relative with eccentric input shaft by bearing.
Transmission principle of the present invention: eccentric input shaft clockwise rotates, drive the line cycloid wheel planetary motion of switching political loyalty, round pin tooth engagement on the line cycloid wheel of switching political loyalty and traitorous line pinwheel, the counterclockwise speed change of the line cycloid wheel of switching political loyalty is rotated, rotate and pass to output disc by will the switch political loyalty counterclockwise speed change of line cycloid wheel of pin, and then realize the variable ratio transmission.
Technique effect of the present invention is:
1, eccentric input shaft is coaxial with output shaft;
2, rotate continuously towards a direction with uniform angular velocity when eccentric shaft enters axle, the string pendulum line gear transmission device velocity ratio property performance period variation of switching political loyalty has realized the transmission of variable ratio;
3, adopt the string pendulum line pinwheel engagement of switching political loyalty to realize the variable ratio transmission, therefore have the characteristics of cycloidal-pin wheel transmission, pin tooth and cycloidal gear teeth are that a tooth is poor, the number of teeth of engagement is many simultaneously, a cycloidal-pin wheel participation engagement of/2nd is arranged in theory, so have larger overload capacity, long service life.
Compared with prior art, outstanding advantages of the present invention is: the number of teeth of engagement is many, have larger overload capacity, long service life.
Description of drawings
Description of drawings of the present invention is as follows:
Fig. 1 is the structural representation of first embodiment of the invention;
Fig. 2 is A-A sectional view in Fig. 1;
Fig. 3 is the structural parameter schematic diagram of the string pendulum line profile line of switching political loyalty;
Fig. 4 is the line Cycloid tooth profile plotted curve of switching political loyalty;
Fig. 5 is traitorous line cycloid wheel nodel line figure and the traitorous line pinwheel nodel line figure of one embodiment of the invention;
Fig. 6 is the velocity ratio change curve of one embodiment of the invention;
Fig. 7 is the outer pinwheel of line and the traitorous line hypocycloid wheel mesh schematic representation of switching political loyalty;
Fig. 8 is line epicyclodial wheel and the traitorous line hypocycloid wheel mesh schematic representation of switching political loyalty.
In figure: 1. casing; 2. eccentric input shaft; 3. the line cycloid wheel of switching political loyalty; 4. the line pinwheel of switching political loyalty; 5. pin; 6. output disc; 7. output shaft.
Embodiment
The invention will be further described below in conjunction with drawings and Examples:
as depicted in figs. 1 and 2, the present invention includes casing 1, eccentric input shaft 2, traitorous line cycloid wheel 3, traitorous line pinwheel 4, pin 5, output disc 6 and output shaft 7, one section of stretching in casing 1 through bearings of eccentric input shaft 2 is the input shaft eccentric segment, the line cycloid wheel 3 of switching political loyalty is arranged on the eccentric shaft part of input shaft by bearing, the line cycloid wheel of switching political loyalty 3 and traitorous line pinwheel 4 engagements, the line pinwheel 4 of switching political loyalty is fixedly connected with casing 1, evenly be laid with pin 5 on output disc 6, pin 5 one ends stretch into interior slip of pin-and-hole on the line cycloid wheel 3 of switching political loyalty, roll with the bias of traitorous line cycloid wheel 3 and match, output disc 6 is fixedly on output shaft 7, axle shaft 7 is arranged on casing 1 another sidewall relative with eccentric input shaft 2 by bearing.
As shown in Figure 2, above-mentioned eccentric input shaft 2 is a solid of rotation that a bit rotates outside departing from the center, can be also the bending axle in casing.
The present invention realizes the theory analysis of variable ratio:
The nodel line of general cycloid wheel is circular, and the nodel line of the line cycloid wheel of switching political loyalty is non-circular.
1, the tooth profile curve equation formula of traitorous line cycloid wheel
As shown in Figure 3, suppose non-circle
Maintain static, and get fixing non-circle
Initial point for the x-y right angled coordinates.As round as a ball r on non-circle
When being rolled into the B point from the C point, its center
Around non-circle
The angle that turns over is
The absolute corner of round as a ball r is
, the relative rotation of round as a ball r is
, upper 1 M of round as a ball r establishes throw of eccentric
=E, the M track of ordering is the string pendulum line gear teeth of switching political loyalty, the curvilinear equation of M locus of point is:
（1）
In formula
Must switch political loyalty line Cycloid tooth profile curve thus as shown in Figure 4.
When round as a ball around fixing non-circle
When rolling across a tooth
And it is round as a ball
Relatively turn over a full circle,
So,
And round as a ball absolute corner
---the number of teeth of the line pinwheel of switching political loyalty (
)
On the line cycloid wheel of switching political loyalty, any point M curvilinear equation is:
2, velocity ratio
According to books " cycloid pinwheel planetary gear transmission system ", Zhengzhou Polytechnical College's Der Grundsatz der Maschinen and mechanical parts teaching and research rooms compile, the 15th ~ 17 page, Science Press, put down in writing the relation between two kinds of forming methods of cycloidal profile in March, 1979, propose the cycloidal profile that known round as a ball r rolls and forms on fixing circle R, the nodel line that can obtain cycloid wheel and pinwheel is respectively
With
The content derivation of carrying according to this secretary obtains following equation:
The non-entelechy equation in coordinates of known fixed
, rolling circle radius r, the line cycloid wheel nodel line polar equation of switching political loyalty
In formula
---the utmost point footpath of the nodel line polar equation of the line cycloid wheel of switching political loyalty
R-rolling circle radius
Traitorous line pinwheel nodel line polar equation
Because traitorous line cycloid wheel is done planetary motion under eccentric input shaft drives, thus its velocity ratio can not represent with simple radius inverse ratio, the angular velocity of eccentric input shaft, the line cycloid wheel of switching political loyalty and the line pinwheel of switching political loyalty is respectively:
,
With
Due to line cycloid wheel and the pin tooth engagement of fixing on the line pinwheel of switching political loyalty of switching political loyalty, the line cycloid wheel of switching political loyalty produces rotation, pin on output disc coordinates with pin-and-hole eccentric rotary on traitorous line cycloid wheel, so only can pass to output disc to the spinning motion of the line cycloid wheel of switching political loyalty, in fact rotate on output disc is exactly the spinning motion of traitorous line cycloid wheel, so the angular velocity ratio of input shaft and output shaft is exactly the switch political loyalty revolution of line cycloid wheel and the ratio of rotation.
According to relative motion principle, if give whole transmission device add one with eccentric input shaft angular velocity equal and opposite in direction opposite direction angular velocity-
, the relative motion relation between each member remains unchanged.But due to whole transmission device add-
Rear input shaft can be considered transfixion, so planetary motion is converted into ordinary transmission.
In formula
---input shaft angular velocity
Because traitorous line pinwheel is fixedly connected with casing, so
=0, substitution formula (5) gets variable ratio and is:
Got by formula (6), due to non-annular balance line wheel polar coordinates
Change with corner, so when eccentric input shaft rotated towards a direction continuously with uniform angular velocity, the transmission of the string pendulum line tooth driving device of switching political loyalty likened cyclically-varying to.
Embodiment
When getting fixing non-circle for ellipse, polar equation:
In formula
A---transverse radius
The non-entelechy equation in coordinates of known fixed
, by (3) formula line cycloid wheel nodel line polar equation of must switching political loyalty
By (4) formula line pinwheel nodel line polar equation of must switching political loyalty
Figure 5 shows that switch political loyalty line cycloid wheel nodel line and traitorous line pinwheel nodel line; In Fig. 5
Be the utmost point footpath of the nodel line polar equation of the line cycloid wheel of switching political loyalty,
Utmost point footpath for the nodel line polar equation of the line pinwheel of switching political loyalty.
Variable ratio
iBe the ratio of switch political loyalty line cycloid wheel revolution angular velocity and spin velocity, the i.e. ratio of input shaft and output shaft angular velocity
As shown in Figure 6, when eccentric input shaft rotated towards a direction continuously with uniform angular velocity, the transmission of the string pendulum line tooth driving device of switching political loyalty likened cyclically-varying to.
In structure illustrated in figures 1 and 2, the line cycloid wheel of switching political loyalty 3 is the line epicyclodial wheel of switching political loyalty, and the line pinwheel 4 of switching political loyalty is pinwheel in the line of switching political loyalty.Certainly, structure of the present invention also can adopt the engagement of as shown in Figure 7 the outer pinwheel of traitorous line and traitorous line hypocycloid wheel, and the line cycloid wheel 3 of namely switching political loyalty is the line hypocycloid wheel of switching political loyalty, and the line pinwheel 4 of switching political loyalty is pinwheel outside the line of switching political loyalty; Can also adopt as shown in Figure 8 traitorous line epicyclodial wheel and the engagement of traitorous line hypocycloid wheel, the line cycloid wheel 3 of namely switching political loyalty is the line epicyclodial wheel of switching political loyalty, the line pinwheel 4 of switching political loyalty is the line hypocycloid wheel of switching political loyalty.
Claims (5)
1. the string pendulum line gear transmission device of switching political loyalty, it is characterized in that: include casing (1), eccentric input shaft (2), traitorous line cycloid wheel (3), traitorous line pinwheel (4), pin (5), output disc (6) and output shaft (7), one section of stretching in casing (1) by bearing of eccentric input shaft (2) is the input shaft eccentric segment, the line cycloid wheel (3) of switching political loyalty is arranged on the eccentric shaft part of input shaft by bearing, the line cycloid wheel (3) of switching political loyalty and traitorous line pinwheel (4) engagement, the line pinwheel (4) of switching political loyalty is fixedly connected with casing (1), evenly be laid with pin (5) on output disc (6), pin (5) one ends stretch into interior slip of pin-and-hole on the line cycloid wheel (3) of switching political loyalty, roll with the bias of traitorous line cycloid wheel (3) and match, output disc (6) is fixedly on output shaft (7), axle shaft (7) is arranged on another sidewall of casing (1) relative with eccentric input shaft (2) by bearing.
2. traitorous string pendulum line gear transmission device according to claim 1 is characterized in that: described eccentric input shaft (2) is a solid of rotation that a bit rotates outside departing from the center or the bending axle in casing.
3. traitorous string pendulum line gear transmission device according to claim 1 and 2 is characterized in that: the line cycloid wheel (3) of switching political loyalty is the line epicyclodial wheel of switching political loyalty, and the line pinwheel (4) of switching political loyalty is pinwheel in the line of switching political loyalty.
4. traitorous string pendulum line gear transmission device according to claim 1 and 2 is characterized in that: the line cycloid wheel (3) of switching political loyalty is the line hypocycloid wheel of switching political loyalty, and the line pinwheel (4) of switching political loyalty is the outer pinwheel of the line of switching political loyalty.
5. traitorous string pendulum line gear transmission device according to claim 1 and 2 is characterized in that: the line cycloid wheel (3) of switching political loyalty is the line epicyclodial wheel of switching political loyalty, and the line pinwheel (4) of switching political loyalty is the line hypocycloid wheel of switching political loyalty.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310034103.5A CN103089953B (en) | 2013-01-29 | 2013-01-29 | Line defect cycloidal gear transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310034103.5A CN103089953B (en) | 2013-01-29 | 2013-01-29 | Line defect cycloidal gear transmission device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103089953A true CN103089953A (en) | 2013-05-08 |
| CN103089953B CN103089953B (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310034103.5A Expired - Fee Related CN103089953B (en) | 2013-01-29 | 2013-01-29 | Line defect cycloidal gear transmission device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017024749A1 (en) * | 2015-08-13 | 2017-02-16 | 华南理工大学 | Line gear mechanism having variable transmission ratio |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2042911U (en) * | 1988-07-08 | 1989-08-16 | 福州大学 | Pin-cycloidal/cast-cycloidal speed-reducing machine |
| CN2056202U (en) * | 1989-06-14 | 1990-04-18 | 唐东先 | Speed-reducer of resilient cycloidal pin gear |
| CN2070702U (en) * | 1990-04-20 | 1991-02-06 | 赵辉 | Driven device for gear rack pitch line changing type drive ratio changing steering-gear |
| DE102005057286A1 (en) * | 2005-12-01 | 2007-06-06 | Klopmeier, Wilhelm, Dipl.-Ing. | Gear for generation of rotary motion, has eccentric ring gear pivoted to drive rotates around centrally positioned pinion of drive shaft such that both wheels are in interference |
| CN201428773Y (en) * | 2009-06-30 | 2010-03-24 | 济南大学 | Constant power transmission mechanism |
-
2013
- 2013-01-29 CN CN201310034103.5A patent/CN103089953B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2042911U (en) * | 1988-07-08 | 1989-08-16 | 福州大学 | Pin-cycloidal/cast-cycloidal speed-reducing machine |
| CN2056202U (en) * | 1989-06-14 | 1990-04-18 | 唐东先 | Speed-reducer of resilient cycloidal pin gear |
| CN2070702U (en) * | 1990-04-20 | 1991-02-06 | 赵辉 | Driven device for gear rack pitch line changing type drive ratio changing steering-gear |
| DE102005057286A1 (en) * | 2005-12-01 | 2007-06-06 | Klopmeier, Wilhelm, Dipl.-Ing. | Gear for generation of rotary motion, has eccentric ring gear pivoted to drive rotates around centrally positioned pinion of drive shaft such that both wheels are in interference |
| CN201428773Y (en) * | 2009-06-30 | 2010-03-24 | 济南大学 | Constant power transmission mechanism |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017024749A1 (en) * | 2015-08-13 | 2017-02-16 | 华南理工大学 | Line gear mechanism having variable transmission ratio |
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|---|---|
| CN103089953B (en) | 2015-07-01 |
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