CN202574365U - Combined unit of electric drive and hydraulic differential steering and bulldozer - Google Patents
Combined unit of electric drive and hydraulic differential steering and bulldozer Download PDFInfo
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- CN202574365U CN202574365U CN 201220241026 CN201220241026U CN202574365U CN 202574365 U CN202574365 U CN 202574365U CN 201220241026 CN201220241026 CN 201220241026 CN 201220241026 U CN201220241026 U CN 201220241026U CN 202574365 U CN202574365 U CN 202574365U
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Abstract
The utility model discloses a combined unit of electric drive and hydraulic differential steering. The middle, the left end and right end of a center spindle are sequentially provided with a first planet row, a second planet row, and a third planet row, a large gear wheel is sheathed on the center spindle and is connected with a planet rack of the first planet row, the gear ring of the first planet row is in transmission connection with a left end output shaft through a planet wheel and another planet rack of the second planet row, a steering gear is in transmission connection with another gear ring of the second planet row, the planet rack of the third planet row is connected with a right end output shaft, and the gear ring is fixed. The combined unit integrates the advantages of electric drive and hydraulic differential steering, thus being simple in structure, high in work efficiency, and reliable and stable in performance. The utility model also discloses a bulldozer provided with the combined unit.
Description
Technical field
The utility model relates to technical field of engineering machinery, and particularly driving of the electricity of bulldozer and hydraulic differential turn to composite set.The utility model also relates to the bulldozer that is provided with said composite set.
Background technology
Along with the development of construction machinery industry, construction machinery product strides forward towards large-scale, efficient, energy-saving and cost-reducing direction gradually.
Bulldozer is as the representative type construction machinery and equipment, and operating feature is that crank motion is bulldozed, and needs the low velocity large driving force, because cabinet size is bigger, turn to difficulty, so the quality of turning efficiency directly affects the efficient economy of bulldozer.
At present, the type of belt drive of bulldozer generally is divided into machinery, fluid power, several kinds of modes of static pressure, and its structure is comparatively complicated with control, and transmission efficiency is relatively low.
Please refer to Fig. 1, Fig. 1 is the structural representation of traditional mechanical steering hardware.
As shown in the figure; Traditional bulldozer handling maneuver is realized through steering clutch, drg formula steering hardware etc.; Mainly form by final transmission gear 1 ＇, left brake wheel 2 ＇, bevel gear wheel 3 ＇, bevel pinion 4 ＇, right brake wheel 5 ＇, right-hand member output shaft 6 ＇, right brake collar 7 ＇, right steering power-transfer clutch 8 ＇, left steering power-transfer clutch 9 ＇, left brake collar 10 ＇, final transmission ring gear 11 ＇, left end output shaft 12 ＇ etc.; Have the not dynamics of poor power of differential, operation inconvenience and labour intensity are big, one-sided often takeoff output in the steering procedure; Can not realize well that reduction of speed increases and turn round; Traveling gear is bearing thrust and the influence of friction coefficient in various degree constantly, more can't realize cast, has seriously restricted the raising of bulldozer complete machine performance.
Please refer to Fig. 2, Fig. 2 is the structural representation of existing differential steering device.
As shown in the figure; Existing bulldozer adopts differential steering device shown in Figure 2, mainly is made up of left end output shaft 1 ", first planet row 2 ", second planet row 3 ", the third line star row 4 ", right-hand member output shaft 5 ", steering hydraulic motor power output shaft 6 " etc., can realize cast in the steering procedure; Can realize to a certain extent that reduction of speed increases and turn round; But helical teeth can bear certain axial force in the transmission process, causes bearing heating, produces loss; Steering procedure medium power source is single, only derives from the steering hydraulic motor.Because differential type steering hardware both sides crawler belt propulsive effort equates or form certain relation, so the stability when influencing performance and the straight-line travelling of bulldozer tractive force.
Therefore, how optimizing the walking and the steering hardware of bulldozer, improve its work efficiency and reliability, is those skilled in the art's technical issues that need to address.
The utility model content
First purpose of the utility model provides a kind of electricity driving and hydraulic differential turns to composite set.The advantage that this device current collection drives and hydraulic differential turns to is in one, and is not only simple in structure, and high efficiency, stable and reliable for performance.
Second purpose of the utility model provides and a kind ofly is provided with that said electricity drives and hydraulic differential turns to the bulldozer of composite set.
In order to realize above-mentioned first purpose, the utility model provides a kind of electricity to drive and hydraulic differential turns to composite set, comprises central principal axis, left end output shaft, right-hand member output shaft, by the steering gear of fluid motor-driven and by motor-driven big gear wheel; The middle part of said central principal axis, left end and right-hand member are installed first planet row, second planet row and the third line star row successively; Said big gear wheel is set in said central principal axis, and is connected with said first planet row's pinion carrier; Satellite gear and pinion carrier and the said left end output shaft of said first planet row's gear ring through said second planet row is in transmission connection; Said steering gear and said second planet row's gear ring is in transmission connection; Said the third line star row's pinion carrier is connected in said right-hand member output shaft, and its gear ring is a fixed gear ring.
Preferably, said steering gear and said second planet row's gear ring is in transmission connection through idle gear.
Preferably, be in transmission connection through train of gears between said big gear wheel and the motor.
Preferably, said motor comprises first motor and second motor of the said big gear wheel of driven in common.
Preferably, said steering gear, big gear wheel and each said planet row's gear is straight gear.
Preferably, said central principal axis is connected through the sun wheel that spline arrange with said first planet, second planet is arranged with the third line star is arranged.
In order to realize above-mentioned second purpose; The utility model also provides a kind of bulldozer; Comprise driving engine, electrical generator, motor, Hydraulic Pump, HM Hydraulic Motor and hydraulic-driven differential screw and steering device, said hydraulic-driven differential screw and steering device is that above-mentioned each described electricity drives and hydraulic differential turns to composite set.
Preferably, said driving engine is provided with auxiliary gear box; Said electrical generator and said auxiliary gear box are in transmission connection, and its power output end is connected in electric control setup; Said motor is connected in said electric control setup on circuit.
Preferably, said electricity driving and hydraulic differential turn to the left end output shaft of composite set and the right-hand member output shaft drives said bulldozer respectively through the terminal transmission device crawler belt.
Preferably, said terminal transmission device is provided with drg.
The electricity that the utility model provided drives and hydraulic differential turns to composite set, mainly is made up of electricity driving and hydraulic-driven two parts, and both are compact merges, and is integrated in the driver module, realizes walking and the function that turns to.When straight-line travelling, by motor-driven, the steering hydraulic motor quits work; When turning to, motor and steering hydraulic motor are worked simultaneously, turn to planet row to increase a track speed; Reduce another track speed, two track speed official post machines turn to, and the rotation direction of steering motor has determined the direction that machine is turned; Motor rotary speed is high more, and the machine Turning radius is more little; During pivot stud, have only the steering hydraulic motor operations, and motor quits work.This device not only has efficiently, simple electric drive mode, and the while has combined again to stablize, fluid control turns to pattern efficiently, on the basis that structure is able to simplify, has improved the work efficiency of bulldozer, has guaranteed the complicated reliability that turns to control.
In a kind of preferred version, said steering gear, big gear wheel and each said planet row's gear is straight gear.Like this, can reduce produce power loss in transmission process to greatest extent, guarantee the power transfer efficiency of driving engine.
Bulldozer provided by the present invention is provided with above-mentioned electricity driving and hydraulic differential turns to composite set; Because above-mentioned electricity drives and hydraulic differential turns to composite set to have above-mentioned technique effect, be provided with this electricity driving and hydraulic differential and turn to the bulldozer of composite set also should possess the corresponding techniques effect.
Description of drawings
Fig. 1 is the structural representation of traditional mechanical steering hardware;
Fig. 2 is the structural representation of existing differential steering device;
Fig. 3 turns to the structural representation of a kind of specific embodiment of composite set for the utility model provides electricity driving and hydraulic differential;
Fig. 4 is the kinetic current scheme drawing of composite set shown in Figure 3 when straight-line travelling, and wherein filled arrows is represented the power of motor input;
Fig. 5 is the transmission diagram of circuit of Fig. 4;
Fig. 6 is the kinetic current scheme drawing of composite set shown in Figure 3 when pivot stud, and wherein hollow arrow is represented the power of HM Hydraulic Motor input;
Fig. 7 is the transmission diagram of circuit of Fig. 6;
Fig. 8 is the kinetic current scheme drawing of composite set shown in Figure 3 when normal direction of rotation, and the real arrow that combines of its hollow is represented the hybrid power stream of motor and HM Hydraulic Motor;
Fig. 9 is the transmission diagram of circuit of Fig. 8;
Figure 10 is the drive path of bulldozer that the utility model provides and turns to the control block diagram.
Among Fig. 1:
Final transmission gear 1 ＇, left brake wheel 2 ＇, bevel gear wheel 3 ＇, bevel pinion 4 ＇, right brake wheel 5 ＇, right-hand member output shaft 6 ＇, right brake collar 7 ＇, right steering power-transfer clutch 8 ＇, left steering power-transfer clutch 9 ＇, left brake collar 10 ＇, final transmission ring gear 11 ＇, left end output shaft 12 ＇
Among Fig. 2:
Left end output shaft 1 ", first planet row 2 ", second planet row 3 ", the third line star row 4 ", right-hand member output shaft 5 ", steering hydraulic motor power output shaft 6 "
Among Fig. 3 to Figure 10:
Central principal axis 1, left end output shaft 2, right-hand member output shaft 3, steering gear 4, big gear wheel 5, idle gear 6
The third line star row 13, sun wheel 13-1, satellite gear 13-2, pinion carrier 13-3, gear ring 13-4
Driving engine 21, auxiliary gear box 22, electrical generator 23, electric control setup 24, motor 25, hydraulic-driven differential screw and steering device 26, terminal transmission device 27, crawler belt 28
The specific embodiment
The core of the utility model provides a kind of electricity driving and hydraulic differential turns to composite set.The advantage that this device current collection drives and hydraulic differential turns to is in one, and is not only simple in structure, and high efficiency, stable and reliable for performance.
In order to make those skilled in the art person understand the utility model scheme better, the utility model is done further to specify below in conjunction with the accompanying drawing and the specific embodiment.
Please refer to Fig. 3, Fig. 3 turns to the structural representation of a kind of specific embodiment of composite set for the utility model provides electricity driving and hydraulic differential.
As shown in the figure, in a kind of specific embodiment, the electricity that the utility model provides drives and hydraulic differential turns to composite set, mainly by component set-ups such as central principal axis 1, left end output shaft 2, right-hand member output shaft 3, steering gear 4 and big gear wheels 5.
The middle part of central principal axis 1, left end and right-hand member are installed first planet row, 11, second planet row 12 and the third line star row 13 successively.
First planet row 11 comprises sun wheel 11-1, satellite gear 11-2, pinion carrier 11-3 and gear ring 11-4; Second planet row 12 comprises sun wheel 12-1, satellite gear 12-2, pinion carrier 12-3 and gear ring 12-4, and the third line star row 13 comprises sun wheel 13-1, satellite gear 13-2, pinion carrier 13-3 and gear ring 13-4.
Central principal axis 1 is connected through the sun wheel of spline with first planet row, 11, second planet row 12 and the third line star row 13.
Be to reduce produce power loss in transmission process, guarantee the power transfer efficiency of driving engine, above-mentioned steering gear 4, big gear wheel 5 and each planet row's gear can adopt straight gear.
The power input source of this composite set is from two parts: a part of power input is from motor, is used for control rate and forward-reverse to move, and another part power is imported from the steering hydraulic motor; During straight-line travelling, by two motor-driven, the steering hydraulic motor quits work; When turning to; Motor and steering hydraulic motor are worked simultaneously, turn to planet row to increase a track speed, reduce another track speed; Article two, track speed official post machine turns to; The rotation direction of steering hydraulic motor has determined the direction that machine is turned, and motor rotary speed is high more, and the machine Turning radius is more little; During pivot stud, speed-changing mechanism is hung neutral gear, has only the steering hydraulic motor operations; And motor quits work, and driving engine institute developed power is all by the Hydraulic Elements transmission that turns to the road, the relative inverted running of both sides crawler belt; Realize that original place 360 degree turn to, i.e. zero turn radius.
Please refer to Fig. 4, Fig. 5, Fig. 4 is the kinetic current scheme drawing of composite set shown in Figure 3 when straight-line travelling, and wherein filled arrows is represented the power of motor input; Fig. 5 is the transmission diagram of circuit of Fig. 4.
As shown in the figure, during straight-line travelling, by two motor-driven, the steering hydraulic motor quits work.When steering gear 4 is in initial position; Power is provided by motor, and power reaches first planet through big gear wheel 5 and arranges 11 pinion carrier 11-3, behind pinion carrier 11-3; In two directions spread out of: a part of power reaches gear ring 11-4 via first planet row 11 satellite gear 11-2; After pinion carrier 12-3 reaches left end output shaft 2, then via reaching sun wheel 11-1 behind the satellite gear 11-2, sun wheel 11-1 reaches sun wheel 13-1 with power through central principal axis 1 to another part power; Sun wheel 13-1, satellite gear 13-2, pinion carrier 11-3 and fixed gear ring 13-4 reach right-hand member output shaft 3 with this part power; The power of two output shafts equates, and hand of rotation is consistent, and bulldozer is along straight-line travelling.
Please refer to Fig. 6, Fig. 7, Fig. 6 is the kinetic current scheme drawing of composite set shown in Figure 3 when pivot stud, and wherein hollow arrow is represented the power of HM Hydraulic Motor input; Fig. 7 is the transmission diagram of circuit of Fig. 6.
As shown in the figure, during pivot stud, have only the steering hydraulic motor operations, and two motors quit work.When motor is in meta, control mechanical steering, power is provided by the steering hydraulic motor, and power reaches gear ring 12-4 through steering gear 4 and idle gear 6.Wherein, Half power reaches sun wheel 12-1 after via satellite gear 12-2, and excess power is through 2 outputs of left end output shaft, and sun wheel 12-1 reaches sun wheel 13-1 with this part power through central principal axis 1; Sun wheel 13-1, satellite gear 13-2, pinion carrier 13-3 and fixed gear ring 13-4 reach right-hand member output shaft 3 with this part power; The power of two output shafts equates that hand of rotation is opposite, and bulldozer is realized cast.
Please refer to Fig. 8, Fig. 9, Fig. 8 is the kinetic current scheme drawing of composite set shown in Figure 3 when normal direction of rotation, and the real arrow that combines of its hollow is represented the hybrid power stream of motor and HM Hydraulic Motor; Fig. 9 is the transmission diagram of circuit of Fig. 8.
As shown in the figure, during normal direction of rotation, motor and steering hydraulic motor are worked simultaneously, and second planet row 12 increases a track speed, reduces another track speed, and two track speed official post machines turn to.The dynamic combined action that steering hydraulic motor and motor provide is in the differential steering system; From the propulsive effort of the motor output normal system of flowing through; The propulsive effort of steering hydraulic motor output is revised the speed with respect to other; About the speed difference of end output shaft by steering hydraulic motor control, the hand of rotation of vehicle is then by the rotation situation control of steering gear 4, the speed of steering hydraulic motor has determined the efficient that turns to.
This device has adopted machinery, electric power, electronics, the integrated automatic control technology of hydraulic pressure, and propulsion source has two parts, and a part comes from motor; Another part derives from the steering hydraulic motor, has electricity simultaneously and drives the advantage that turns to hydraulic differential, can realize well that reduction of speed increases to turn round and the original place quick steering; Can turn to operation by intelligent flexible control bulldozer, improve the steady and sensitieness of its handling maneuver, by drive motor; Can increase work efficiency; Can alleviate the traveling gear wearing and tearing again, improve its service life, safe.
Owing on the bulldozer of complicated condition, realized the hybrid power The Application of Technology; Energy-saving and cost-reducing with significantly improving, as to reach environmental protection effect; Simultaneously; Other is had the construction machinery and equipment of similar principle of work, also will play great promotion and exemplary role, have remarkable economic efficiency and social benefit.
Certainly, it only is a kind of preferred version that above-mentioned electricity driving and hydraulic differential turn to composite set, specifically is not limited thereto, and can make pointed adjustment according to actual needs on this basis, thereby obtain different embodiment.Because mode in the cards is more, casehistory no longer one by one just here.
Please refer to Figure 10, Figure 10 is the drive path of bulldozer that the utility model provides and turns to the control block diagram.
Except above-mentioned electricity drives and hydraulic differential turns to composite set; The utility model also provides a kind of bulldozer; Comprise driving engine 21, electrical generator 23, motor 25, Hydraulic Pump, HM Hydraulic Motor and hydraulic-driven differential screw and steering device 26; Wherein hydraulic-driven differential screw and steering device 26 turns to composite set for electricity driving and hydraulic differential mentioned above, and all the other structures please refer to prior art, repeat no more here.
Driving engine 21 is provided with auxiliary gear box 22; Electrical generator 23 is in transmission connection with auxiliary gear box 22; Its power output end is connected in electric control setup 24; Motor 25 is connected in electric control setup 24 on circuit, electricity drives and hydraulic differential turns to the left end output shaft of composite set and the right-hand member output shaft drives bulldozer respectively through terminal transmission device 27 crawler belt 28, and terminal transmission device 27 is provided with drg.
More than electricity that the utility model provided is driven and hydraulic differential turns to composite set and bulldozer to carry out detailed introduction.Used concrete example among this paper the principle and the embodiment of the utility model are set forth, the explanation of above embodiment just is used to help to understand the core concept of the utility model.Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (10)
1. an electricity drives and hydraulic differential turns to composite set, it is characterized in that, comprises central principal axis, left end output shaft, right-hand member output shaft, by the steering gear of fluid motor-driven and by motor-driven big gear wheel; The middle part of said central principal axis, left end and right-hand member are installed first planet row, second planet row and the third line star row successively; Said big gear wheel is set in said central principal axis, and is connected with said first planet row's pinion carrier; Satellite gear and pinion carrier and the said left end output shaft of said first planet row's gear ring through said second planet row is in transmission connection; Said steering gear and said second planet row's gear ring is in transmission connection; Said the third line star row's pinion carrier is connected in said right-hand member output shaft, and its gear ring is a fixed gear ring.
2. electricity according to claim 1 drives and hydraulic differential turns to composite set, it is characterized in that, said steering gear and said second planet row's gear ring is in transmission connection through idle gear.
3. electricity according to claim 2 drives and hydraulic differential turns to composite set, it is characterized in that, is in transmission connection through train of gears between said big gear wheel and the motor.
4. turn to composite set according to each described electricity driving of claim 1 to 3 and hydraulic differential, it is characterized in that said motor comprises first motor and second motor of the said big gear wheel of driven in common.
5. electricity according to claim 4 drives and hydraulic differential turns to composite set, it is characterized in that, said steering gear, big gear wheel and each said planet row's gear is straight gear.
6. electricity according to claim 5 drives with hydraulic differential and turns to composite set, it is characterized in that, said central principal axis through spline arrange with said first planet, second planet arranges the sun wheel of arranging with the third line star and is connected.
7. bulldozer; Comprise driving engine, electrical generator, motor, Hydraulic Pump, HM Hydraulic Motor and hydraulic-driven differential screw and steering device; It is characterized in that said hydraulic-driven differential screw and steering device is that aforesaid right requirement 1 to 6 each described electricity drives and hydraulic differential turns to composite set.
8. bulldozer according to claim 7 is characterized in that said driving engine is provided with auxiliary gear box; Said electrical generator and said auxiliary gear box are in transmission connection, and its power output end is connected in electric control setup; Said motor is connected in said electric control setup on circuit.
9. bulldozer according to claim 8 is characterized in that, said electricity drives and hydraulic differential turns to the left end output shaft of composite set and the right-hand member output shaft drives said bulldozer respectively through the terminal transmission device crawler belt.
10. bulldozer according to claim 9 is characterized in that, said terminal transmission device is provided with drg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220241026 CN202574365U (en) | 2012-05-25 | 2012-05-25 | Combined unit of electric drive and hydraulic differential steering and bulldozer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220241026 CN202574365U (en) | 2012-05-25 | 2012-05-25 | Combined unit of electric drive and hydraulic differential steering and bulldozer |
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| CN202574365U true CN202574365U (en) | 2012-12-05 |
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| CN 201220241026 Expired - Fee Related CN202574365U (en) | 2012-05-25 | 2012-05-25 | Combined unit of electric drive and hydraulic differential steering and bulldozer |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103723188A (en) * | 2014-01-21 | 2014-04-16 | 山推工程机械股份有限公司 | Control method and control system of differential steering mechanism and engineering machinery employing control system |
| CN104005447A (en) * | 2014-05-06 | 2014-08-27 | 潍柴动力股份有限公司 | Bulldozer and driving device thereof |
| CN104389979A (en) * | 2014-09-15 | 2015-03-04 | 江苏大学 | Hydraulic mechanical transmission with auxiliary steering function |
| CN104943745A (en) * | 2015-06-26 | 2015-09-30 | 湖南农夫机电有限公司 | Crawler belt self-walking type agricultural machine hydraulic control differential steering system |
| CN104964019A (en) * | 2015-06-29 | 2015-10-07 | 湖南省农友机械集团有限公司 | Transmission mechanism of crawler-type machine |
| CN105059389A (en) * | 2015-09-16 | 2015-11-18 | 湖南省农友机械集团有限公司 | Planetary gear differential steering device for tracked vehicle |
| CN103318247B (en) * | 2013-07-10 | 2016-05-11 | 山推工程机械股份有限公司 | A kind of engineering machinery and transfer thereof |
| CN110375053A (en) * | 2019-08-19 | 2019-10-25 | 三一汽车制造有限公司 | Land leveller |
| CN110424492A (en) * | 2019-07-01 | 2019-11-08 | 柳州柳工挖掘机有限公司 | Crawler-mounted excavator walking hydraulic control system |
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2012
- 2012-05-25 CN CN 201220241026 patent/CN202574365U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103318247B (en) * | 2013-07-10 | 2016-05-11 | 山推工程机械股份有限公司 | A kind of engineering machinery and transfer thereof |
| CN103723188B (en) * | 2014-01-21 | 2016-04-06 | 山推工程机械股份有限公司 | The control method of differential screw and steering device, system and apply the construction machinery and equipment of this system |
| CN103723188A (en) * | 2014-01-21 | 2014-04-16 | 山推工程机械股份有限公司 | Control method and control system of differential steering mechanism and engineering machinery employing control system |
| CN104005447A (en) * | 2014-05-06 | 2014-08-27 | 潍柴动力股份有限公司 | Bulldozer and driving device thereof |
| CN104389979A (en) * | 2014-09-15 | 2015-03-04 | 江苏大学 | Hydraulic mechanical transmission with auxiliary steering function |
| CN104943745A (en) * | 2015-06-26 | 2015-09-30 | 湖南农夫机电有限公司 | Crawler belt self-walking type agricultural machine hydraulic control differential steering system |
| CN104943745B (en) * | 2015-06-26 | 2017-07-18 | 湖南农夫机电有限公司 | Caterpillar band self-propelled farm machinery hydraulic control differential steering system |
| CN104964019A (en) * | 2015-06-29 | 2015-10-07 | 湖南省农友机械集团有限公司 | Transmission mechanism of crawler-type machine |
| CN104964019B (en) * | 2015-06-29 | 2016-06-08 | 湖南省农友机械集团有限公司 | The transmission rig of a kind of track type facility |
| CN105059389A (en) * | 2015-09-16 | 2015-11-18 | 湖南省农友机械集团有限公司 | Planetary gear differential steering device for tracked vehicle |
| CN110424492A (en) * | 2019-07-01 | 2019-11-08 | 柳州柳工挖掘机有限公司 | Crawler-mounted excavator walking hydraulic control system |
| CN110424492B (en) * | 2019-07-01 | 2021-11-12 | 柳州柳工挖掘机有限公司 | Walking hydraulic control system of crawler excavator |
| CN110375053A (en) * | 2019-08-19 | 2019-10-25 | 三一汽车制造有限公司 | Land leveller |
| CN110375053B (en) * | 2019-08-19 | 2024-06-07 | 三一汽车制造有限公司 | Land leveler |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20210525 |
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| CF01 | Termination of patent right due to non-payment of annual fee |