CN104492054A - Automatically controlled shuttlecock serving motor machine - Google Patents
Automatically controlled shuttlecock serving motor machine Download PDFInfo
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- CN104492054A CN104492054A CN201410774852.6A CN201410774852A CN104492054A CN 104492054 A CN104492054 A CN 104492054A CN 201410774852 A CN201410774852 A CN 201410774852A CN 104492054 A CN104492054 A CN 104492054A
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- 241000237858 Gastropoda Species 0.000 claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000010304 firing Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000002860 competitive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 231100000225 lethality Toxicity 0.000 description 1
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- 238000012797 qualification Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
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Abstract
The invention relates to an automatically controlled shuttlecock serving motor machine which is composed of a motor, a snail type shell, a funnel, a supporting frame, scored pulleys and rails, wherein the snail type shell is connected with the motor and the funnel through bolts; the supporting frame is connected with the motor and the funnel through a supporting shaft; the motor is connected with the supporting frame through bolts; the scored pulleys are connected with the supporting frame through bearings; the scored pulleys roll on the rails. The automatically controlled shuttlecock serving motor machine is simple, reasonable and novel in structure, is convenient in operation, is used for performing partner training by replacing a shuttlecock training partner, is capable of increasing the training effect and is high in practicability.
Description
Technical field
The invention belongs to robotics, particularly relate to a kind of shuttlecock playing service motor machine that can automatically control.
Background technology
The motion of key ball is China's traditional health sports events, has the training device of key ball aspect less, has at present: a kind of robot key ball training device and picture semi arch Robot diameter service motor machine training device.A kind of robot key ball training device, simple to operate, the mobile delivery of service of training mate person can be simulated, improve training effectiveness, training effect can be improved, but can't realize the control of course of action and falling sphere point, service firmly can not regulate, long service and send out near ball difficulty realizes, can regulate ball launch angle again although can move along parallel track, serve a ball and can not cover the whole region of receiving of trainer, therefore trainer's on-site multiple dead angles, receive a little can not get training, training difficulty is little, and Competitive effects is poor, promotes be restricted the high professional qualification of trainer, draw semi arch Robot diameter service motor machine training device, simple and reasonable, simple to operate, the mobile delivery of service of training mate person can be simulated, training for promotion efficiency and effect, but be difficult to control to course of action and falling sphere point, service firmly can not regulate, long service and nearly ball are difficult to realize, although rotate service around staking out can regulate ball launch angle again, moreover ball launch angle moves by roller the little restriction that rises and falls, the ball sent can not cover the whole catching region of the other side, therefore the multiple dead angle of trainer's on-site can not get training of receiving, training difficulty is little, can not the highly difficult technical ability of training for promotion person.
Summary of the invention
The object of the invention is: provide a kind of shuttlecock playing service motor machine that can automatically control, its simple and reasonable novelty, manipulate easy, cost is low, and can overcome defect of the prior art and have its advantage concurrently, training effect is good, practical.
Realizing the technical solution used in the present invention is: this equipment is made up of motor, snail type housing, funnel, bracing frame, sheave and track, snail type housing is connected with motor, funnel through bolt, bracing frame is connected with motor, funnel through back shaft, motor is connected with bracing frame through bolt, sheave is connected with bracing frame through bearing, and sheave rolls on track.
Power is provided in order to give the different action of service, regulate the size of service power, simulation training mate person walks about delivery of service, and this motor has three, First is that adjustable frequency motor is connected with snail type housing through bolt, and its axle vertically inserts in snail type housing, axle head is connected to service robot through bolt; Second is connected on the upside of snail type housing for stepper motor through bolt, its axle has sector gear and firing device; 3rd is connected to bracing frame lower end for adjustable frequency motor through bolt, bearing.
Delivery of service is interrupted in order to simulate training mate person, the one side of snail type housing ball mouth is provided with little axle, ball mouth left surface has a small sircle hole, right flank has a big hole, upper side has a rectangular opening and a supporting leg with holes, small sircle hole, big hole and the funnel end opening center of circle relative, the funnel arranged is ox horn formula, it is suitable for reading is fan-shaped mouth, funnel is arranged rotatable board plug type controller to connect through supporting leg, rotatable board plug type controller is by two blocks of parallel fan plates, a turning cylinder, an extension spring and a transmission ratch composition, one block of fan-shaped plate is in upside, one end is fixedly connected with one end of rotating shaft, the fan-shaped plate of another block is in downside, one end is fixedly connected with the other end of rotating shaft, the two ends of rotating shaft are through supporting leg movable supporting with holes, the horizontal conveyor bar having one to be vertically fixedly connected with in the middle of rotating shaft, horizontal conveyor bar one end is connected with extension spring one end, the extension spring other end is connected with hopper walls, the horizontal conveyor bar other end is flexibly connected with transmission ratch through Minisize axial, two blocks of fan-shaped plates insert in funnel by the horizontal joint of the change of rotation direction alternately on hopper walls when axis of rotation.
To walk about delivery of service to simulate training mate person, be provided with three sheaves to be all connected with bracing frame through bearing in bracing frame lower end, first sheave and the 3rd frequency conversion motors coaxial and and second sheave roll on one article of track, 3rd sheave rolls on another article of track, the 3rd sheave has eccentric shaft be connected through the little axle of drive link with snail type housing ball mouth one side.
In order to shuttlecock playing is dealt into trainer place smoothly, the service robot arranged is reducing tubulose, service robot bigger diameter end is segment shape, the two segment opening centers of circle are relative, service robot miner diameter end has gauge tap, this switch has three pieces of rotatable sheets of arc through Minisize axial along the equidistant setting of service robot outer wall, three pieces of rotatable sheet one end of arc are all inserted in service robot, the other end is outer and be flexibly connected through circular arc drive link at service robot, circular arc drive link two ends are connected on service robot through supporting leg with holes, wherein spring is overlapped in one end, the other end is connected with stay cord one end, the other end of stay cord is with the sliding bar of spring to be connected through directive wheel with one.
Good effect of the present invention is: simple and reasonable novelty, training mate person can be simulated to walk about delivery of service, serve a ball firmly adjustable, can long service, can send out again ball near, can fix a point to serve a ball, can multi-directionly serve a ball again, the whole Training Area of trainer can be covered, and can regulate continuously serving side to, the control to course of action and falling sphere point can be realized, the ball sent is precisely strong, lethality is strong, training difficulty is high, but training difficulty can be reduced, more motor-driven than similar equipment service, flexibly, fast, service automaticity is high, can train each action of trainer, reaction speed and adaptability to changes that trainer receives can be improved, the needs of trainer's physical efficiency and combat training can be met, exercise skill promotes fast, also can for teaching and personal entertainment, practical.During use on surrounding environment and resident without any impact, not only be suitable for public area, greenery patches, also be applicable to residential quarter activity take exercise, applied widely, a creatively inherit and development to China's shuttlecock playing traditional culture, easy making compared with similar equipment and critical piece in making, makes that recruitment is few, energy consumption is low, material source is wide, price is low, easily popularize.
Accompanying drawing explanation
Accompanying drawing 1 is external structure schematic diagram of the present invention;
Accompanying drawing 2 is the side view of accompanying drawing 1;
Accompanying drawing 3 is the top view of accompanying drawing 1;
Accompanying drawing 4 is that the A-A of accompanying drawing 1 is to snail type housing sectional view;
Accompanying drawing 5 is the service robot external structure schematic diagram on accompanying drawing 4;
Accompanying drawing 6 is the top view of accompanying drawing 5;
Accompanying drawing 7 be on accompanying drawing 6 C-C to service robot miner diameter end sectional drawing;
Accompanying drawing 8 is that B-B on accompanying drawing 2 is to funnel sectional view;
Accompanying drawing 9 is rotatable board plug type controller external structure schematic diagram on accompanying drawing 8;
Accompanying drawing 10 is the top view of accompanying drawing 9;
Accompanying drawing 11 is the side view of accompanying drawing 9;
Accompanying drawing 12 is the system schematic of module control motor;
Accompanying drawing 13 is the firing device drawing on second step motor shaft;
Accompanying drawing 14 is the side view of accompanying drawing 13.
Detailed description of the invention
The present invention is as shown in accompanying drawing 1,2,3, this equipment is made up of motor 1, snail type housing 2, funnel 3, bracing frame 4, sheave and track, snail type housing 2 is connected with motor 1, funnel 3 through bolt, bracing frame is connected with motor through back shaft 110, funnel lower end is connected with bracing frame 4 through back shaft 33, motor 1 is connected with bracing frame 4 through bolt, sheave 41 is connected with bracing frame 4 through bearing, and sheave 41 rolls on track 4120,4130.Power is provided in order to give the different action of service, regulate service size firmly, simulation training mate person walks about delivery of service, this motor 1 has three, First is that adjustable frequency motor 11 is connected on snail type housing 2 through bolt, its axle vertically inserts in snail type housing 2, its axle head is connected to service robot 111 through bolt, service robot 111 is reducing tubulose, bigger diameter end is segment shape, the two segment opening centers of circle are relative, little scarce round opening 1111 is fixedly connected with First adjustable frequency motor 11 axle head, the large circle opening 1112 that lacks is used for putting into shuttlecock playing, service robot 111 miner diameter end has gauge tap 1113, this switch has three pieces of rotatable sheets of arc 11131 through Minisize axial along the equidistant setting of service robot outer wall, three pieces of arc rotatable sheet 11131 one end are inserted in service robot 111 wall, the other end is outer and be flexibly connected through circular arc drive link 11132 at wall, circular arc drive link two ends are connected on service robot in hole on supporting leg 11133 with holes, wherein spring 11134 is overlapped in one end, the other end is connected with stay cord 11135 one end, the stay cord other end is with the sliding bar 11137 of spring 111371 to be connected through directive wheel 11136 with one, sliding bar has two supporting legs 11133 with holes to support, there is semicircle cap 111372 at sliding bar two ends, two semicircle caps small one and large one, large semicircle cap is used for opening gauge tap 1113, small semicircle cap is used for preventing sliding bar from departing from supporting leg 11133, second is connected on the upside of snail type housing 2 for stepper motor 12 through bolt, the axle 120 of stepper motor 12 has sector gear 121 and firing device 122, 3rd is connected to bracing frame 4 lower end for adjustable frequency motor 13 through bolt, bearing, and these three motors 1 are controlled (as shown in Fig. 1,2,3,4,5,6,7,12,13,14) by a control module 5.Delivery of service is interrupted in order to simulate training mate person, the one side of snail type housing 2 ball mouth 22 is provided with little axle 23, is used for regulating ball launch angle, the left surface of ball mouth 22 has small sircle hole, is used for inserting the axle of First adjustable frequency motor 11, the right flank of ball mouth 22 has big hole to be used for putting ball, and the upper side of ball mouth 22 has a rectangular opening 24 and supporting leg 25 with holes, is used for by firing device 122 respectively and supports transmission ratch 314, funnel 3 lower end is connected with snail type housing 2 through bolt, the left surface small sircle hole of funnel 3 end opening and snail type housing 2 ball mouth 22, right flank big hole and the service robot 111 bigger diameter end two segment opening center of circle relative, funnel is suitable for reading is fan-shaped mouth, end opening opposite exterior lateral sides face has back shaft 33 relative with the end opening center of circle, back shaft 33 is used for being connected with bracing frame 4, funnel 3 arranges rotatable board plug type controller 31 to connect through supporting leg 32, rotatable board plug type controller is by two blocks of parallel fan plates 311, a turning cylinder 312, an extension spring 313 and a transmission ratch 314 form, one block of fan-shaped plate 311 is in upside, one end is fixedly connected with one end of turning cylinder 312, another plate 311 is in downside, one end is fixedly connected with the other end of turning cylinder 312, there is supporting leg 32 movable supporting with holes at turning cylinder 312 two ends, the horizontal conveyor bar 3121 having one to be vertically fixedly connected with in the middle of turning cylinder 312, horizontal conveyor bar 3121 one end is connected with extension spring 313 one end, the extension spring other end is connected with funnel 3 wall, horizontal conveyor bar 3121 other end is flexibly connected with transmission ratch 314 through Minisize axial, two blocks of fan-shaped plates 311 when turning cylinder 312 rotates on funnel 3 wall horizontal joint alternately insert in funnel by the change of rotation direction, transmission ratch 314 engages (as Fig. 1 through the sector gear 121 on hole on the supporting leg with holes 25 on snail type shell upper side and second stepper motor 12 axle, 2, 3, 4, 5, 8, 9, 10, shown in 11).To walk about delivery of service to simulate training mate person, three sheaves 41 are provided with in bracing frame 4 lower end, three sheaves 41 are all connected to bracing frame 4 lower end through bearing and axle, first sheave 411 and the 3rd frequency conversion motors 13 coaxial and and second sheave 412 roll on one article of semicircular arc track 4120, 3rd sheave 413 rolls on another article of semicircular arc track 4130, two semicircular arc track 4120, the center of circle of 4130 is concentric, 3rd sheave 413 there is eccentric shaft 4131 be flexibly connected through the little axle 23 of drive link 42 with snail type housing 2 ball mouth 22 one side, drive link 42 can be used to regulate ball launch angle continuously, traditional rod 42 there is adjustment hole, the amplitude of ball launch angle can be regulated (as Fig. 1, 2, shown in 3).
Operation principle of the present invention and using method: twice concentric semicircles arc track 4120 is set in shuttlecock playing place, 4130, semicircular arc track 4120, 4130 openings are towards net, this equipment is placed on track, first sheave 411 and second sheave 412 are placed on large radius semicircular arc track 4120, 3rd sheave 413 is placed on minor radius semicircular arc track 4130, then this equipment is started, under the programme-control that three motors 1 set in control module 5, 3rd frequency conversion motors 13 drives sheave 411 at semicircular arc track 4120, reciprocate on 4130, drive link 42 regulates ball launch angle continuously, second stepper motor 12 is through sector gear 121, engage with the transmission ratch 314 on rotatable board plug type controller 31 to drive horizontal conveyor bar 3121 thus promote turning cylinder 312 and rotate, the fan-shaped plate 311 driving turning cylinder two ends to connect rotates, the fan-shaped plate 311 in downside is made to insert in funnel 3, and the fan-shaped plate 311 in upside shifts out funnel 3, shuttlecock playing in funnel falls between two fan-shaped plates 311, after sector gear 121 turns over fan-shaped arc length, sector gear 121 and transmission ratch 314 engage and suspend, horizontal conveyor bar 3121 drives horizontal conveyor bar 3121 and turning cylinder 312 to rotate under extension spring 313 acts on, thus make upside fan plate 311 insert in funnel, the fan-shaped plate 311 in downside shifts out funnel 3, the shuttlecock playing be clipped between two fan-shaped plates 311 falls, fall in the service robot 111 in snail type housing 2 through funnel end opening, the miner diameter end that the centrifugal force that service robot 111 produces under the driving effect of First adjustable frequency motor 11 makes shuttlecock playing move to service robot 111 from service robot 111 bigger diameter end is controlled by gauge tap 1113, when rectangular opening 24 on the upside of service robot 111 miner diameter end turns to snail type housing 2 ball mouth 22, the semicircle cap 111372 of sliding bar 11137 end on gauge tap 1113 is touched by the firing device 122 on second stepper motor 12 axle, sliding bar 11137 slides and pulls stay cord 11135 to drive circular arc drive link 11132 to rotate thus also drive three pieces of arc rotatable sheet 11131 rotating opening gauge taps 1113, shuttlecock playing departs from service robot 111 and flies to trainer place through snail type housing 2 ball mouth 22, gauge tap 1113 sets back under circular arc drive link 11132 one end spring 11134 and the effect of sliding bar 11137 one end spring 111371, control next shuttlecock playing.If trained certain action of trainer, this equipment can be set in certain position on track 4120,4130, then regulate with drive link 42 adjustment apertures.
Claims (6)
1. the shuttlecock playing service motor machine that can automatically control, it is characterized in that: it is made up of motor, snail type housing, funnel, bracing frame, sheave and track, snail type housing is connected with motor, funnel through bolt, bracing frame is connected with motor, funnel through back shaft, motor is connected with bracing frame through bolt, sheave is connected with bracing frame through bearing, and sheave rolls on track.
2. a kind of shuttlecock playing service motor machine that can automatically control according to claim 1, it is characterized in that: described motor has three, First is that adjustable frequency motor is connected on snail type housing through bolt, and the axle of this adjustable frequency motor vertically inserts in snail type housing, axle head is connected to service robot through bolt; Second is connected on the upside of snail type housing for stepper motor through bolt, the axle of this stepper motor has sector gear and firing device; 3rd is connected to bracing frame lower end for adjustable frequency motor through bolt, bearing.
3. a kind of shuttlecock playing service motor machine that can automatically control according to claim 1, it is characterized in that: the one side of described snail type housing ball mouth has little axle, the left surface of ball mouth has small sircle hole, right flank has big hole, upper side has rectangular opening and supporting leg with holes.
4. a kind of shuttlecock playing service motor machine that can automatically control according to claim 1, it is characterized in that: described funnel is ox horn formula, it is arranged rotatable board plug type controller and supporting leg with holes, rotatable board plug type controller is by two blocks of parallel fan plates, a turning cylinder, an extension spring and a transmission ratch composition, one block of fan-shaped plate is in upside, one end is fixedly connected with one end of turning cylinder, another plate is in downside, one end is fixedly connected with the other end of turning cylinder, there is supporting leg movable supporting with holes at turning cylinder two ends, the horizontal conveyor bar having one to be vertically fixedly connected with in the middle of rotating shaft, horizontal conveyor bar one end is connected with extension spring one end, the extension spring other end is connected on hopper walls, the horizontal conveyor bar other end is flexibly connected with transmission ratch through Minisize axial.
5. a kind of shuttlecock playing service motor machine that can automatically control according to claim 1, it is characterized in that: the sheave that described bracing frame lower end has three warp beams to connect, first sheave and the 3rd frequency conversion motors coaxial and and second sheave roll on one article of track, 3rd sheave rolls on another article of track, the 3rd sheave has eccentric shaft be connected through the little axle of drive link with snail type housing ball mouth one side; Article two, track is semicircular arc, and the center of circle of two halves circular arc track is concentric.
6. a kind of shuttlecock playing service motor machine that can automatically control according to claim 2, it is characterized in that: described service robot is reducing tubulose, service robot bigger diameter end is segment shape, and the two segment opening centers of circle are relative; Service robot miner diameter end has gauge tap, this switch has three pieces of rotatable sheets of arc through Minisize axial along the equidistant setting of service robot outer wall, three pieces of rotatable sheet one end of arc are inserted in service robot, the other end is outer and be flexibly connected through circular arc drive link at service robot, circular arc drive link two ends to be connected on service robot through supporting leg with holes, wherein one end overlap spring, the other end is connected with stay cord one end, and the stay cord other end is with the sliding bar of spring to be connected through directive wheel with one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410774852.6A CN104492054B (en) | 2014-12-16 | 2014-12-16 | Automatically controlled shuttlecock serving motor machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410774852.6A CN104492054B (en) | 2014-12-16 | 2014-12-16 | Automatically controlled shuttlecock serving motor machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104492054A true CN104492054A (en) | 2015-04-08 |
| CN104492054B CN104492054B (en) | 2017-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410774852.6A Expired - Fee Related CN104492054B (en) | 2014-12-16 | 2014-12-16 | Automatically controlled shuttlecock serving motor machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106310634A (en) * | 2016-09-09 | 2017-01-11 | 徐州工业职业技术学院 | Shuttlecock automatic pitching machine |
| CN106512365A (en) * | 2016-12-21 | 2017-03-22 | 上海第二工业大学 | Automatic emitting device for shuttlecock training |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7806788B1 (en) * | 2007-06-07 | 2010-10-05 | Neuman Daniel R | Pitching machine |
| EP2374512A2 (en) * | 2010-04-12 | 2011-10-12 | Manfred Rendl | Ball training device |
| CN202087027U (en) * | 2011-06-13 | 2011-12-28 | 郑州大学 | Automatic pitching machine |
| CN103692444A (en) * | 2014-01-09 | 2014-04-02 | 曹玉升 | Robot sports training device |
| CN203694564U (en) * | 2014-01-28 | 2014-07-09 | 曹玉升 | Training device for hitting shuttlecock by robot |
-
2014
- 2014-12-16 CN CN201410774852.6A patent/CN104492054B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7806788B1 (en) * | 2007-06-07 | 2010-10-05 | Neuman Daniel R | Pitching machine |
| EP2374512A2 (en) * | 2010-04-12 | 2011-10-12 | Manfred Rendl | Ball training device |
| CN202087027U (en) * | 2011-06-13 | 2011-12-28 | 郑州大学 | Automatic pitching machine |
| CN103692444A (en) * | 2014-01-09 | 2014-04-02 | 曹玉升 | Robot sports training device |
| CN203694564U (en) * | 2014-01-28 | 2014-07-09 | 曹玉升 | Training device for hitting shuttlecock by robot |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106310634A (en) * | 2016-09-09 | 2017-01-11 | 徐州工业职业技术学院 | Shuttlecock automatic pitching machine |
| CN106512365A (en) * | 2016-12-21 | 2017-03-22 | 上海第二工业大学 | Automatic emitting device for shuttlecock training |
| CN106512365B (en) * | 2016-12-21 | 2019-07-02 | 上海第二工业大学 | A kind of shuttlecock playing training automatic launcher |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104492054B (en) | 2017-01-11 |
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Inventor after: Xu Donggang Inventor after: Li Zengquan Inventor after: Tu Yong Inventor after: Fu Shilei Inventor after: Si Zhenyan Inventor after: Liu Xiaohua Inventor after: Wang Juncai Inventor after: Wang Lixiang Inventor before: Niu Sen Inventor before: Li Delin Inventor before: Cai Jiping Inventor before: Zhang Hongtao Inventor before: Peng Kun Inventor before: Zhu Songmei Inventor before: Yue Shaojun Inventor before: Pan Wandong Inventor before: Chang Huili Inventor before: Zheng Xianchang |
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Effective date of registration: 20161110 Address after: Xingyang City, Henan province 450100 Dragon Town Zhengzhou City Zheng Road No. 81 Applicant after: ZHENGZHOU TECHNICAL COLLEGE Applicant after: HENAN QUALITY POLYTECHNIC Applicant after: Li Zengquan Address before: 476000 Henan City, Shangqiu Province Park Road, No. 1 Yiyang Road, building 304, No. 1 Applicant before: Li Delin |
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Inventor after: Feng Xianqiang Inventor after: Li Zengquan Inventor after: Zhang Qing Inventor after: Fu Shilei Inventor after: Si Zhenyan Inventor after: Liu Xiaohua Inventor after: Wang Juncai Inventor after: Wang Lixiang Inventor before: Xu Donggang Inventor before: Li Zengquan Inventor before: Tu Yong Inventor before: Fu Shilei Inventor before: Si Zhenyan Inventor before: Liu Xiaohua Inventor before: Wang Juncai Inventor before: Wang Lixiang |
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Effective date of registration: 20161207 Address after: No. 566 Shangqiu City, Henan province 476000 Shenhuo Avenue Applicant after: SHANGQIU POLYTECHNIC Applicant after: HENAN QUALITY POLYTECHNIC Applicant after: Li Zengquan Address before: Xingyang City, Henan province 450100 Dragon Town Zhengzhou City Zheng Road No. 81 Applicant before: ZHENGZHOU TECHNICAL COLLEGE Applicant before: HENAN QUALITY POLYTECHNIC Applicant before: Li Zengquan |
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Granted publication date: 20170111 Termination date: 20171216 |