CN2769617Y - Progressive stepless speed changer - Google Patents
Progressive stepless speed changer Download PDFInfo
- Publication number
- CN2769617Y CN2769617Y CN 200520054546 CN200520054546U CN2769617Y CN 2769617 Y CN2769617 Y CN 2769617Y CN 200520054546 CN200520054546 CN 200520054546 CN 200520054546 U CN200520054546 U CN 200520054546U CN 2769617 Y CN2769617 Y CN 2769617Y
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- sun gear
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Abstract
The utility model discloses a progressive stepless speed change device which is provided with two speed regulation sun gears controlled by a speed limiting device, wherein a gear frame of a third planetary gear set is fixedly connected with a first gear ring; a first planetary gear set and a gear frame of a second planetary gear set are fixedly connected or form an integral structure; the gear frame is fixedly connected with an output shaft; the first planetary gear set is engaged between the first gear ring and an input sun gear; the second planetary gear set engaged between a second gear ring and the second speed regulation sun gear; the third planetary gear set is engaged between the second gear ring and the first speed regulation sun gear; the first gear ring is supported on a unidirectional bearing which can limit the rotation direction of the first gear ring. The utility model can change the outputted rotation speed and the torsion in time, can continuously carry out conversion at a high speed and a low speed for causing output to operate to an optimal state with a wide speed change range, can carry out a speed change to the power of an engine to a best and high-efficiency state for the output at any time, reduce fuel oil consumption, lighten the load of the engine, reduce the exhaust of waste gas and exert the function of environment protection.
Description
Technical field
The utility model relates to a kind of Progresive stepless variable speed gear that utilizes planetary gears to realize, is applicable to the speed change transmission in automotive transmission and the engineering machinery.
Background technique
In industrial field, the stepless speed variator of energy high power transmission is rare, such as automotive industry, the existing automobile overwhelming majority all adopts manual or automatic step change transmission, its efficient has only about 65% usually, so each automotive industry developed country all endeavouring to research and develop stepless speed variator, and stepless speed variator not only can make motor car engine remain peak efficiency under various operating modes, and can make motor reduce oil consumption rate, thereby reduce toxic emission.
The application of stepless speed variator mainly is automobile and motorcycle industry, present applicable mechanical continuously-variable transmission has only steel-belt type or belt type continuously variable transmission and old-fashioned friction type stepless speed changer, and popularity rate is extremely low, the steel-belt type stepless speed variator is that the steel wheel by two variable-diameters connects with steel band, the diameter of steel wheel needs very accurate pressure control, this has strengthened difficulty for control technique, if it is excessive to drive quality, steel band can skid, but reducing steel wheel and steel band wearing and tearing are big, life-span is short, thus the steel-belt type stepless speed variator only on the small-sized and minicar of compactness, using, its efficient also has only about 75%.
The model utility content
Technical problem to be solved in the utility model is to overcome the above deficiency of prior art, and a kind of Progresive stepless variable speed gear of realizing by gear is provided, and its variable speed operation is convenient, and transmission power is big, efficient is high, and adjustable wide ranges.
For solving the problems of the technologies described above, the Progresive stepless variable speed gear that the utility model provides comprises input shaft, input sun gear, first planetary gear set, second planetary gear set and output shaft, also be provided with two speed governing sun gears by speed limiting device control, the rotation of the first speed governing sun gear and the rotation of input shaft are separated, and the rotation of the second speed governing sun gear and the rotation of output shaft are separated; Be provided with the third line star gear train, its wheel carrier and first gear ring are affixed; Be provided with second gear ring; Wherein, the wheel carrier Joint of described first planetary gear set and second planetary gear set or be structure as a whole, this wheel carrier and output shaft are affixed; First planetary gear set is engaged between first gear ring and the input sun gear, and second planetary gear set is engaged between second gear ring and the second speed governing sun gear, and the third line star gear train is engaged between second gear ring and the first speed governing sun gear; Described first gear ring is bearing on the unilateral bearing that can limit its sense of rotation.
For solving the problems of the technologies described above, under identical inventive concept, the utility model also provides second kind of Progresive stepless variable speed gear, comprise input shaft, input sun gear, first planetary gear set, second planetary gear set and output shaft, also be provided with a speed governing sun gear by speed limiting device control, the rotation of this speed governing sun gear and the rotation of input shaft are separated; Be provided with the third line star gear train, its wheel carrier and first gear ring are affixed; Be provided with second gear ring; Be provided with a fixedly sun gear; Wherein, the wheel carrier Joint of described first planetary gear set and second planetary gear set or be structure as a whole, this wheel carrier and output shaft are affixed; First planetary gear set is engaged between first gear ring and the input sun gear, and second planetary gear set is engaged between second gear ring and the speed governing sun gear, and the third line star gear train is engaged in second gear ring and fixedly between the sun gear; Described first gear ring is bearing on the unilateral bearing that can limit its sense of rotation.
Under identical inventive concept, the utility model also provides the third Progresive stepless variable speed gear, comprise input shaft, input sun gear, first planetary gear set, second planetary gear set and output shaft, also be provided with a speed governing sun gear by speed limiting device control, the rotation of this speed governing sun gear and the rotation of input shaft are separated; Be provided with the third line star gear train, its wheel carrier and first gear ring are affixed; Be provided with second gear ring, be wholely set the sun gear part of a band external tooth on it; Be provided with the 3rd gear ring, this gear ring is fixed by fixing device; Wherein, the wheel carrier Joint of described first planetary gear set and second planetary gear set or be structure as a whole, this wheel carrier and output shaft are affixed; First planetary gear set is engaged between first gear ring and the input sun gear, and second planetary gear set is engaged between second gear ring and the speed governing sun gear, and the third line star gear train is engaged between the sun gear part of the 3rd gear ring and second gear ring; Described first gear ring is bearing on the unilateral bearing that can limit its sense of rotation.
The speed limiting device that above-mentioned three kinds of Progresive stepless variable speed gears are mentioned can be any one in liquid stream viscous motion, magnetic braking, rolling braking or the friction stopping device.For adopting liquid stream viscous motion device, it can comprise a hydraulic pump body, has oil input channel and oil expulsion channel on this pump housing, and this oil input channel is communicated to hydraulic oil, is provided with flow control valve at oil input channel or oil expulsion channel side; And for adopting the magnetic braking device, it comprises is located at speed governing sun gear coil on every side, is provided with movably magnetic core in the coil, and the magnetic force that coil produces is opposite with the direction that the speed governing sun gear rotates.This magnetic braking device also can adopt the principle of stepper motor to adjust control in addition.
The utility model combines by unilateral bearing and gear ring, soon, produced the effect of stepping in the driven at a slow speed, thereby has realized the stepless change form of gear stage.This device can in time change the rotating speed and the torsion of output, and can be continuously uninterrupted fast conversion at a slow speed makes output run to best state, slewing range wide (answering designing requirement).Can arrive the power speed changing of motor best and state output efficiently at any time, raise the efficiency greatly, reduce the loss of fuel oil, alleviate the load of motor, reduce exhaust gas discharging, can solve diesel engine because the problem of the over-emitting black exhaust that load produces plays environmental-protection function.It is simple in structure, low cost of manufacture, and control unit is few, and variable speed operation is convenient; Can realize high-power transmission, the wide range speed change, highi degree of accuracy is regulated, and the transmission efficiency height is applied widely, reliable operation, long service life.
Description of drawings
Fig. 1 is the structural representation of first kind of mode of execution of the present utility model;
Fig. 2 is the structural representation of second kind of mode of execution of the present utility model;
Fig. 3 is the structural representation of the third mode of execution of the present utility model;
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Figure 1 shows that first kind of mode of execution of the utility model Progresive stepless variable speed gear, it comprises input shaft 1, output shaft 2, first planetary gear set 3, second planetary gear set 4, the third line star gear train 5, first gear ring 6, second gear ring 7, the first speed governing sun gear 8, the second speed governing sun gear 9 and input sun gear 10 etc., two speed governing sun gears 8 and 9 can be controlled by speed limiting device respectively, the first speed governing sun gear 8 can be separated around input shaft 1 rotation and with the rotation of input shaft 1, and the second speed governing sun gear 9 can be separated around output shaft 2 rotations and with the rotation of output shaft 2.Input shaft 1 rotates synchronously with input sun gear 10, and they can be integrative-structures, also can be to be fixedly connected, and can also be the branch body structure in addition and intermeshes synchronous with what realize rotating by interior external tooth.
The wheel carrier 11 that first planetary gear set 3 and second planetary gear set 4 have one, this wheel carrier 11 is affixed with output shaft 2; The wheel carrier of the third line star gear train 5 and first gear ring 6 are affixed; First planetary gear set 3 is engaged between first gear ring 6 and the input sun gear 10, and second planetary gear set 4 is engaged between second gear ring 7 and the second speed governing sun gear 9, and the third line star gear train 5 is engaged between second gear ring 7 and the first speed governing sun gear 8; Described first gear ring 6 is bearing on the unilateral bearing 12 that can limit its sense of rotation, and its effect is to prevent that first gear ring, 6 works from counterclockwise rotating.(said here counter clockwise direction with regard to the power input direction, the counter clockwise direction during promptly from input shaft towards output shaft, below mentioned clockwise or also in like manner counterclockwise.)
Because first gear ring 6 is affixed with the wheel carrier of the third line star gear 5, and this wheel carrier is pinned its counterclockwise rotation by unidirectional bearing 12, like this when input shaft 1 when rotating with constant rotational speed clockwise, driving first planetary pinion 3 is rotated counterclockwise, the wheel carrier 11 and the output shaft 2 that also promote simultaneously first planetary gear set 3 and second planetary gear set 4 turn clockwise, if desired the rotating speed of output is raise or reduction, can fix any one of the first speed governing sun gear 8 or the second speed governing sun gear 9, another is just adjusted with speed limiting device, and this speed limiting device can be liquid stream viscous motion, magnetic braking, in rolling braking or the friction stopping device any one.
Its working principle and process are as follows: when input sun gear in the direction of the clock and when stablizing the rotation of speed, drive planetary pinion and counterclockwise rotate (i.e. counter-rotating), promote planetary carrier and do clockwise direction revolution (output shaft is to be fixed in planetary wheel carrier to do power output).When this moment, output shaft had load, gear ring does rotation counterclockwise can for planetary drive, because the counter-rotating of gear ring, can be planetary pinion and gear ring engaging piece, the power that is acted on gear ring by planetary pinion is discharged, the Point of Strength of planetary tooth can not stress on planetary pinion, planetary pinion just can not promote planetary wheel carrier and do clockwise rotation, output shaft does not just have power output so.Gear ring will produce stress to the engaging piece that its counter-rotating gives planetary pinion and gear ring for locking like this, stress is in planetary pinion, here we just add a unilateral bearing to gear ring, unilateral bearing locking gear ring can only be clockwise to counter-rotating, planetary pinion just can produce thrust drive planetary carrier and do clockwise revolution like this, output shaft is with regard to dynamic output, and the power of this output we be set at the slowest and torsion maximum (i.e. a retaining).When if we will promote the rotating speed of output, just add one clockwise and rotating speed (planetary stress point is shifted to an earlier date clockwise) by a certain percentage at gear ring, output will promote rotating speed in proportion accordingly like this.If in the speed-raising process, the torsion that is added in gear ring is not enough to overcome planetary thrust (gear ring can reverse), unilateral bearing locking gear ring can pause for the counter-rotating gear ring immediately, the rotating speed of the slowest and acrotorque that sets like this will play a role immediately, can overcome planetary thrust up to the torsion that is added in gear ring, gear ring again can be once more work, clockwise, output speed can promote again, when the torsion of gear ring can not overcome planetary thrust again next time, gear ring can pause again immediately, and set acrotorque can play a role again, the collaborative resistance that overcomes output.So progressive output speed is promoted of alternate cycles (gear ring rotation, the rotating speed and the torsion that pause and export) with the collaborative work change of stepped form and the big torsion of low speed.If also can reduce rotating speed accordingly being added in rotating speed on the gear ring such output shaft of rotating speed that slows down on request, that is exactly a moderating process.So just show the circulate form of gradual speed change bending moment of planetary pinion, reach the purpose of linear speed regulating.
Below the working principle of above-mentioned liquid stream viscous motion arrangements for speed regulation is carried out simple declaration, these arrangements for speed regulation can adopt the mode of gear pump, are about to the gear sealing and are installed in the pump housing, have oil input channel and oil expulsion channel on the pump housing, this oil input channel is communicated to hydraulic oil, is provided with flow control valve in the oil expulsion channel side.When motor is delivered to constant rotating speed on the input sun gear by input shaft, open flow control valve fully this moment, then importing sun gear rotates with corresponding speed ratio by gear ring and planetary gear set drive speed governing sun gear, after the speed governing sun gear rotates, will drive hydraulic oil and suck the pump housing (or the active fuel feeding is to pump housing), and discharge from oil expulsion channel by oil input channel; If flow control valve do not add effect, hydraulic oil will be under the effect of gear pump Rapid Cycle.Because gear ring is bearing on the unilateral bearing that can limit its sense of rotation, therefore can't rotate, remain static.At this moment the rotating speed of output shaft is minimum comparatively speaking, the moment of torsion maximum.
If close flow control valve gradually this moment, the discharge resistance of hydraulic oil can strengthen gradually, when the discharge resistance of hydraulic oil greatly when gear rotational speed is reduced, because of the input shaft rotating speed does not become, so the input sun gear that gear ring is transfused on the axle passes through the planetary gear set driven rotary.
If control valve is closed fully, hydraulic oil is arranged fully and is not gone out, and the resistance of liquid stream can make the speed governing sun gear can't rotate fully, and at this moment gear ring is issued to the highest rotating speed in the planetary gear set drive of input shaft, and the rotating speed of output shaft also reaches maximum simultaneously, the moment of torsion minimum.
This speed change gear is to utilize the variation in pressure of hydraulic oil to alleviate the impact variation of input shaft rotating speed, thereby realizes speed change.It utilizes fluid power liquid stream viscous motion differential, and regulate the internal power proportioning with circulating fluid, input shaft power is pooled on the output shaft after allotment, utilizes valve to carry out continuous control to the flow of circulating fluid, therefore the means of the available continuous adjusting control flow rate valve amount of opening realize speed change.
And for above-mentioned magnetic braking device, then can adopt hot-wire coil to realize, should note making the magnetic force of its generation and the sense of rotation of speed governing sun gear just the opposite (or locking) in the time of concrete enforcement, promptly, when speed governing sun crop rotation clockwise direction rotated, hot-wire coil produced anticlockwise magnetic force.In order to realize control to speed governing sun gear rotating speed, one iron core is set in coil, this iron core is driven by hydraulic mechanism and does translational motion, to change the magnetic flux of coil, thereby change the size of its magnetic force, and then the rotating speed of realizing the speed governing sun gear is the most at a high speed and stop to do between the different two states stepless variation fully.
And for above-mentioned rolling braking device, can comprise a stator and a rotor with respect to the stator rotation, between stator and the rotor for being provided with moving to axial, on stator and rotor, be wholely set flange respectively, two flanges circumferentially are concaved with arc ring rail respectively in relative face upper edge, thereby between stator flange and rotor flange, form a circumferential race, plurality of balls evenly is arranged in this circumferential race in the mode of the revolution of can rolling, and forms line between ball and the circumferential race and contacts.Described rotor is placed on the axle that one extends on the stator, has between rotor and this axle to arrange vertically and the circumferential needle roller of evenly arranging in edge.Working principle simply is described below, stator is fixed on the non-rotatable member of equipment, the rotatable parts of rotor and equipment are affixed, when rotor is not applied in axial force, it freely rotates around the axle of stator by needle roller and ball, and each ball is also made revolution motion along circumferential race in the rolling rotation.When the axial force that rotor is applied a sensing stator, when perhaps stator being applied the axial force of a sensing rotor, the frictional force between ball and the circumferential race increases, and its rolling revolution speed is reduced, thereby also reduced the rotating speed of rotor; When this axial force was increased to a certain setting value, the rotating speed of rotor reduced to zero, thereby reached the purpose of braking.
Figure 2 shows that second kind of mode of execution of the utility model Progresive stepless variable speed gear, it comprises input shaft 21, output shaft 22, first planetary gear set 23, second planetary gear set 24, the third line star gear train 25, the first gear rings 26, second gear ring 27, by the speed governing sun gear 28 of speed limiting device control, fixedly sun gear 29, input sun gear 210, speed governing sun gear 28 rotates around input shaft 21, and it rotates and the rotation of input shaft is separated; The wheel carrier of the third line star gear train 25 and first gear ring, 26 Joints; Wherein, the wheel carrier 211 that described first planetary gear set 23 and second planetary gear set 24 have one, this wheel carrier 211 is affixed with output shaft 22; First planetary gear set 23 is engaged between first gear ring 26 and the input sun gear 210, and second planetary gear set 24 is engaged between second gear ring 27 and the speed governing sun gear 28, and the third line star gear train 25 is engaged in second gear ring 27 and fixedly between the sun gear 29; Described first gear ring 26 is bearing on the unilateral bearing 212 that can limit its sense of rotation.
Its working principle and process and above-mentioned first kind of mode of execution are similar, when input shaft 21 turns clockwise, first planetary gear set 23 is rotated counterclockwise, because first gear ring 26 pins and can not be rotated counterclockwise for unilateral bearing 212, so first planetary gear set 23 is rotated counterclockwise and drives the output that turns clockwise of wheel carrier 211 and output shaft 22 simultaneously, second planetary gear set 24 is rotated counterclockwise, the resistance of cause second gear ring 27 turns clockwise so drive speed governing sun gear 28 greater than the resistance of speed governing sun gear 28.If load alleviates when needing to improve rotating speed, then limit with the rotating speed of speed limiting device to speed governing sun gear 28, when the resistance of speed governing sun gear 28 during greater than the resistance of second gear ring 27, second planetary gear set 24 will pass to the third line star gear train 25 to power by second gear ring 27, first gear ring 26 is turned clockwise just can promote output speed.Improve otherwise rotating speed is decontroled or made it to the rotating speed of speed governing sun gear 28 fully, then can reduce output speed, thereby reach the purpose of speed change.
Figure 3 shows that the third mode of execution of the present utility model, it comprises input shaft 31, output shaft 32, first planetary gear set 33, second planetary gear set 34, the third line star gear train 35, the first gear rings 36, second gear ring 37, the 3rd gear ring 38, by the speed governing sun gear 39 of speed limiting device control, input sun gear 310 etc., speed governing sun gear 39 rotates around input shaft 31, and it rotates and the rotation of input shaft 31 is separated; The wheel carrier of the third line star gear train 35 and first gear ring 36 are affixed; Be wholely set the sun gear part 311 of a band external tooth on second gear ring 37; The 3rd gear ring 38 is fixed by fixing device; Wherein, the wheel carrier 312 that described first planetary gear set 33 and second planetary gear set 34 have one, this wheel carrier 312 is affixed with output shaft 32; First planetary gear set 33 is engaged between first gear ring 36 and the input sun gear 310, second planetary gear set 34 is engaged between second gear ring 37 and the speed governing sun gear 39, and the third line star gear train 35 is engaged between the sun gear part 311 of the 3rd gear ring 38 and second gear ring; Described first gear ring 36 is bearing on the unilateral bearing 313 that can limit its sense of rotation.
Its working principle and process and above-mentioned first kind of mode of execution are similar, when input shaft 31 clockwise directions rotate, first planetary gear set 33 is done rotation counterclockwise, because first gear ring 36 is pinned and can not be rotated counterclockwise by individual event bearing 313, so first planetary gear set 33 also drives wheel carrier 312 when being rotated counterclockwise and output shaft 32 turns clockwise, first gear ring 36, second gear ring 37, the third line star gear train 35 are static at this moment.Second planetary pinion only drives speed governing sun gear 39 and turns round clockwise so, because output shaft 32 changes when it is loaded when rotated, when improving rotating speed again if load alleviates, only need the rotating speed of restriction speed governing sun gear 39, this moment, second planetary pinion will converge to power on the output shaft 32 via the sun gear part 311 on second gear ring 37, second gear ring, the third line star gear train 35, first gear ring 36 then, and the rotating speed of output shaft 32 will improve; Otherwise then for slowing down.
Protection domain of the present utility model is not limited to above-mentioned three kinds of embodiments, for any change and modification that does not break away from invention thought described in these claims and the scope, all will drop on fully within the protection domain of the present utility model.
Claims (6)
1. a Progresive stepless variable speed gear comprises input shaft (1), input sun gear (10), first planetary gear set (3), second planetary gear set (4) and output shaft (2), it is characterized in that: also be provided with
Two speed governing sun gears (8,9) by speed limiting device control, the rotation of the rotation of the first speed governing sun gear (8) and input shaft (1) is separated, and the rotation of the rotation of the second speed governing sun gear (9) and output shaft (2) is separated;
The third line star gear train (5), its wheel carrier and first gear ring (6) are affixed;
Second gear ring (7);
Wherein, the wheel carrier Joint of described first planetary gear set (3) and second planetary gear set (4) or be structure as a whole, this wheel carrier and output shaft (2) are affixed; First planetary gear set (3) is engaged between first gear ring (6) and the input sun gear (10), second planetary gear set (4) is engaged between second gear ring (7) and the second speed governing sun gear (9), and the third line star gear train (5) is engaged between second gear ring (7) and the first speed governing sun gear (8); Described first gear ring (6) is bearing on the unilateral bearing (12) that can limit its sense of rotation.
2. Progresive stepless variable speed gear according to claim 1 is characterized in that: described speed limiting device is liquid stream viscous motion, magnetic braking, rolling braking or friction stopping device.
3. a Progresive stepless variable speed gear comprises input shaft (21), input sun gear (210), first planetary gear set (23), second planetary gear set (24) and output shaft (22), it is characterized in that: also be provided with
Speed governing sun gear (28) by speed limiting device control, the rotation of the rotation of this speed governing sun gear (28) and input shaft (21) is separated;
The third line star gear train (25), its wheel carrier and first gear ring (26) are affixed;
Second gear ring (27);
A fixing sun gear (29);
Wherein, the wheel carrier Joint of described first planetary pinion (23) group and second planetary gear set (24) or be structure as a whole, this wheel carrier and output shaft (22) are affixed; First planetary gear set (23) is engaged between first gear ring (26) and the input sun gear (210), second planetary gear set (24) is engaged between second gear ring (27) and the speed governing sun gear (28), and the third line star gear train (25) is engaged in second gear ring (27) and fixedly between the sun gear (29); Described first gear ring (26) is bearing on the unilateral bearing (212) that can limit its sense of rotation.
4. Progresive stepless variable speed gear according to claim 3 is characterized in that: described speed limiting device is liquid stream viscous motion, magnetic braking, rolling braking or friction stopping device.
5. a Progresive stepless variable speed gear comprises input shaft (31), input sun gear (310), first planetary gear set (33), second planetary gear set (34) and output shaft (32), it is characterized in that: also be provided with
Speed governing sun gear (39) by speed limiting device control, the rotation of the rotation of this speed governing sun gear (39) and input shaft (31) is separated;
The third line star gear train (35), its wheel carrier and first gear ring (36) are affixed;
Second gear ring (37) is wholely set the sun gear part (311) of a band external tooth on it;
The 3rd gear ring (38), this gear ring is fixed by fixing device;
Wherein, the wheel carrier Joint of described first planetary gear set (33) and second planetary gear set (34) or be structure as a whole, this wheel carrier and output shaft (32) are affixed; First planetary gear set (33) is engaged between first gear ring (36) and the input sun gear (310), second planetary gear set (34) is engaged between second gear ring (37) and the speed governing sun gear (39), and the third line star gear train (35) is engaged between the sun gear part (311) of the 3rd gear ring (38) and second gear ring (37); Described first gear ring (36) is bearing on the unilateral bearing (313) that can limit its sense of rotation.
6. Progresive stepless variable speed gear according to claim 5 is characterized in that: described speed limiting device is liquid stream viscous motion, magnetic braking, rolling braking or friction stopping device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520054546 CN2769617Y (en) | 2005-02-01 | 2005-02-01 | Progressive stepless speed changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520054546 CN2769617Y (en) | 2005-02-01 | 2005-02-01 | Progressive stepless speed changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2769617Y true CN2769617Y (en) | 2006-04-05 |
Family
ID=36690700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520054546 Expired - Lifetime CN2769617Y (en) | 2005-02-01 | 2005-02-01 | Progressive stepless speed changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2769617Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100342152C (en) * | 2005-01-26 | 2007-10-10 | 秦桂强 | Progresive stepless variable speed gear |
| CN114233816A (en) * | 2021-11-12 | 2022-03-25 | 北京航空航天大学 | Mechanical motion rectifier based on planetary gear train |
-
2005
- 2005-02-01 CN CN 200520054546 patent/CN2769617Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100342152C (en) * | 2005-01-26 | 2007-10-10 | 秦桂强 | Progresive stepless variable speed gear |
| CN114233816A (en) * | 2021-11-12 | 2022-03-25 | 北京航空航天大学 | Mechanical motion rectifier based on planetary gear train |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20071010 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |