CN103291858B - A kind of mechanical variable speed system - Google Patents
A kind of mechanical variable speed system Download PDFInfo
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- CN103291858B CN103291858B CN201210048350.6A CN201210048350A CN103291858B CN 103291858 B CN103291858 B CN 103291858B CN 201210048350 A CN201210048350 A CN 201210048350A CN 103291858 B CN103291858 B CN 103291858B
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- 230000003068 static effect Effects 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims description 10
- 230000001737 promoting effect Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 6
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000001151 other effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
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Abstract
Mechanical variable speed system disclosed by the invention, comprises driving wheel, central shaft, planetary gears, output wheel, and described planetary gears comprises central gear, planet wheel, planet carrier and gear ring, described gear ring and described planet carrier axial restraint; Described central shaft maintains static, and described central gear is shaped on described central shaft; Also comprise by described planet carrier and/or gear ring are connected to come the gearshift of output rotating speed regulation with described driving wheel and output wheel.By arranging gearshift, needing to adjust the annexation between driving wheel and gear ring and/or planet carrier and output wheel according to different speed changes, exporting different velocity ratios, thus regulate the motion speed of the equipment such as wheel or lathe, adopt this planetary gears to carry out gearshift adjustment, stability is better, wearing and tearing and noise all less, working life is longer, without the need to consuming more active force, working efficiency is higher, relative motor speed-regulating, working life is longer, and maintenance cost is lower.
Description
Technical field
The present invention relates to a kind of speed variator system, be specifically related to a kind of mechanical variable speed system.
Background technique
Existing bicycle mainly makes it run by the artificial active force that applies, the active force that its speed and human body apply becomes a cube ratio, therefore, to regulate vehicle forward velocity, just need expend more active force, the amount of labour is larger, and the electric bicycle that existing market occurs can carry out real-time speed regulating as required, but it mainly realizes the operation speed governing of vehicle by the rotational velocity of adjustment motor, the damage once motor breaks down, electric bicycle is then difficult to normal operation, affect the use of daily life, and, replacing and the maintenance cost of motor are higher.
And most of lathe is as drilling machine, milling machine, lathe etc., mainly adopts and change belt pulley and carry out speed change, the method wastes time and energy inconvenient operation, and working efficiency is lower.
Also there is a kind of mechanical variable speed device in prior art, be specially and adopt dual-clutch gear-shifting speed governing, but it exists serious wearing and tearing when gearshift and transmission, energy ezpenditure is serious, and noise is comparatively large, and working life is lower.
Therefore, a kind of real-time speed regulating realizing the equipment such as vehicle or lathe, structure is simple, easy to operate, reduces the amount of labour, increases work efficiency, and the lower speed variator system of user cost urgently occurs.
Summary of the invention
Mainly regulated the speed of vehicle operating by artificial acting for solving traditional vehicle, the amount of labour is larger, and the electric motor car on existing market adopts motor carry out speed governing or adopt double clutch speed governing, serious wear, fragile, change and maintenance cost all higher, in addition most of lathe adopts and changes belt pulley speed change, the problems such as working efficiency is lower, the invention discloses a kind of speed variator system, to reach the motion speed effectively regulating the equipment such as vehicle or lathe according to specific needs, reduce the amount of labour, easy to operate, increase work efficiency, reduce the object of user cost.
For achieving the above object, technological scheme of the present invention is as follows:
A kind of mechanical variable speed system, the output unit comprising active transmission device, arrangements for speed regulation and be in transmission connection with described arrangements for speed regulation; Described active transmission device is driving wheel, described arrangements for speed regulation comprise central shaft with and the planetary gears that is installed on described central shaft, described planetary gears comprises central gear, planet wheel, planet carrier and gear ring, described gear ring and described planet carrier axial restraint; Described central shaft maintains static, and described central gear is shaped on described central shaft;
Described output unit is the output wheel being arranged at described planetary gears output terminal;
Described mechanical variable speed system also comprises by described planet carrier and/or gear ring are connected to come the gearshift of output rotating speed regulation with described driving wheel and output wheel.
Preferably, the Placement between described driving wheel and described gear ring is spline joint, and the output terminal of described driving wheel is provided with driving wheel external splines, and described gear ring input end is provided with gear ring first internal spline be meshed with described driving wheel external splines.
Preferably, the Placement between described driving wheel and described planet carrier is spline joint, and the output terminal of described driving wheel is provided with driving wheel external splines, and the input end of described planet carrier is provided with planet carrier first internal spline be meshed with described driving wheel external splines.
Preferably, between described planet carrier and described output wheel, Placement is spline joint, and the output terminal of described planet carrier is provided with planet carrier second internal spline, and the input end of described output wheel is provided with the output wheel external splines be meshed with described planet carrier second internal spline.
Preferably, described gear ring output terminal is provided with gear ring second internal spline be meshed with described output wheel external splines.
Preferably, described arrangements for speed regulation also comprise the positioning means by described gear ring and described planet carrier axial restraint.
Preferably, described positioning means comprises the position limit pin be fixedly installed on inside described gear ring, and is positioned at the outer groove outside described planet carrier, and described position limit pin stretches in described outer groove, and described position limit pin can along described outer groove circumferential running.
Preferably, described gearshift comprising support, being arranged on described support for promoting push rod that described gear ring vertically moves and the position-limit mechanism for limiting described push rod stroke.
Preferably, be provided with through hole on described support, described position-limit mechanism comprises the limited impression be arranged on described push rod and the screens element being positioned at described through hole, and described limited impression is at least 2.
Preferably, the front end of described push rod is also provided with the shift fork longitudinally fixing with described gear ring.
Mechanical variable speed system disclosed by the invention, comprises driving wheel, central shaft, planetary gears, output wheel, and described planetary gears comprises central gear, planet wheel, planet carrier and gear ring, described gear ring and described planet carrier axial restraint; Described central shaft maintains static, and described central gear is shaped on described central shaft; Also comprise by described planet carrier and/or gear ring are connected to come the gearshift of output rotating speed regulation with described driving wheel and output wheel.By arranging gearshift, needing to adjust the annexation between driving wheel and gear ring and/or planet carrier and output wheel according to different speed changes, exporting different velocity ratios, thus regulate the motion speed of the equipment such as wheel or lathe, adopt this planetary gears to carry out gearshift adjustment, stability is better, wearing and tearing and noise all less, working life is longer, without the need to consuming more active force, working efficiency is higher, relative motor speed-regulating, working life is longer, and maintenance cost is lower.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of mechanical variable speed system disclosed by the invention;
Fig. 2 is the structural representation of driving wheel in a kind of mechanical variable speed system disclosed by the invention;
Fig. 3 is the structural representation of planet carrier in a kind of mechanical variable speed system disclosed by the invention;
Fig. 4 is the structural representation of gear ring in a kind of mechanical variable speed system disclosed by the invention;
Fig. 5 is the structural representation of central shaft in a kind of mechanical variable speed system disclosed by the invention;
Fig. 6 is the structural representation of gearshift in a kind of mechanical variable speed system disclosed by the invention;
Fig. 7 is the structural representation of output wheel in a kind of mechanical variable speed system disclosed by the invention.
The title of the numeral in figure or the corresponding part representated by letter:
1, driving wheel 2, planet wheel 3, planet carrier 4, gear ring 5, central shaft 6, support 7, output wheel; 11, driving wheel external splines; 31, planet carrier first internal spline 32, planet carrier second internal spline 33, outer groove; 41, gear ring first internal spline 42, gear ring second internal spline 43, position limit pin 44, convex edge; 51, central gear; 61, push rod 62, through hole 63, screens element 64, limited impression 65, shift fork; 71, output wheel external splines.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The invention discloses a kind of speed variator system, to reach the motion speed effectively regulating the equipment such as vehicle or lathe according to specific needs, reduce the amount of labour, easy to operate, increase work efficiency, reduce the object of user cost.
As shown in figs. 1-7, a kind of mechanical variable speed system, the output unit comprising active transmission device, arrangements for speed regulation and be in transmission connection with arrangements for speed regulation; Active transmission device is driving wheel 1, arrangements for speed regulation comprise central shaft 5 with and the planetary gears that is installed on central shaft 5, planetary gears comprises central gear 51, planet wheel 2, planet carrier 3 and gear ring 4, gear ring 4 and planet carrier 3 axial restraint; Ensure that gear ring 4 and planet carrier 3 can synchronously vertically move, gear ring also can and planet carrier between relatively rotate, mutual interference can not be produced, the normal operation of both guarantees.
Central shaft 5 maintains static, and central gear 51 is shaped on central shaft 5; Ensure the stability between central gear and central shaft; Output unit is the output wheel 7 being arranged at planetary gears output terminal; Applied external force directly acts on driving wheel, after carry out speed governing process by planetary gears, export finally by output wheel.
This mechanical variable speed system also comprises by planet carrier 3 and/or gear ring 4 are connected to come the gearshift of output rotating speed regulation with driving wheel 1 and output wheel 7.By arranging gearshift, need to adjust the annexation between driving wheel and gear ring and/or planet carrier and output wheel according to different speed changes, export different velocity ratios, thus regulate the motion speed of the equipment such as wheel or lathe, this planetary gears is adopted to carry out gearshift adjustment, stability is better, wearing and tearing and noise all less, working life is longer, without the need to consuming more active force, working efficiency is higher, relative motor speed-regulating, use and maintenance cost lower.
Placement between driving wheel 1 and gear ring 4 is spline joint, and the output terminal of driving wheel 1 is provided with driving wheel external splines 11, and gear ring 4 input end is provided with gear ring first internal spline 41 be meshed with driving wheel external splines 11.By engaging each other effect between driving wheel external splines 11 and gear ring first internal spline 41, making driving wheel active force can be directly passed to gear ring, driving ring gear against rotation.
Placement between driving wheel 1 and planet carrier 3 is spline joint, and the input end of planet carrier 3 is provided with planet carrier first internal spline 31 be meshed with driving wheel external splines 11.By engaging each other effect between driving wheel external splines 11 and planet carrier first internal spline 31, making driving wheel active force can be directly passed to planet carrier, driving planet carrier to rotate.
Between planet carrier 3 and output wheel 7, Placement is spline joint, and the output terminal of planet carrier 3 is provided with planet carrier second internal spline 32, and the input end of output wheel 7 is provided with the output wheel external splines 71 be meshed with planet carrier second internal spline 32.By the engagement between planet carrier second internal spline 32 and output wheel external splines 71, rotation can be passed to output wheel through planet carrier and directly export.
Arrangements for speed regulation also comprise the positioning means of gear ring 4 with planet carrier 3 axial restraint.Positioning means comprises the position limit pin 43 be fixedly installed on inside gear ring 4, and is positioned at the outer groove 33 outside planet carrier 3, and position limit pin 43 stretches in outer groove 33, and position limit pin 43 can along outer groove 33 circumferential running.Effectively locate between gear ring and planet carrier in the vertical on the one hand, gear ring and the longitudinal synchronizing moving of planet carrier can be made, on the other hand, because the rotational velocity of gear ring and planet carrier is inconsistent, relatively rotate by making the two, with both guarantees normal operation in a circumferential direction, do not produce mutual interference.In addition, except position limit pin being set on gear ring and positioning, also can arrange catch on gear ring to position, catch can be sector structure, and concentric with outer groove, to ensure the normal operation between planet carrier and gear ring, or a circle or one section of convex edge are circumferentially set inside gear ring, convex edge and outer groove cooperatively interact and act on, and the structural type of positioning means does not limit at this.
Gearshift comprising support 6, being arranged at for promoting the push rod 61 that gear ring 4 vertically moves on support 6, and for limiting the position-limit mechanism of push rod 61 stroke.Support 6 is provided with through hole 62, position-limit mechanism comprises the limited impression 64 be arranged on push rod 61 and the screens element 63 being positioned at through hole 62, and limited impression 64 is at least 2.Acted on by limited impression and cooperatively interacting of screens element, carry out the spacing of different stroke to push rod, the gearshift realizing planet carrier and gear ring is moved, and makes operator clearly can understand gear, to operate by arranging screens element.Screens element 63 comprises spring and steel ball.By realizing the effect of screens gearshift to the compression of spring and reset.Wherein also directly can arrange the convex edge matched with limited impression on support, the edge of convex edge is arc, is convenient to clamping and the disengaging of limited impression, is convenient to gear shift operation.
The front end of push rod 61 is also provided with the shift fork 65 longitudinally fixing with gear ring 4, the output terminal arranged outside of gear ring 4 has convex edge 44, shift fork 65 is provided with bayonet socket, matching with bayonet socket in convex edge, makes push rod and gear ring longitudinally upper fixing, gear ring and planet carrier can with push rod vertically move and mobile, and shift fork is sector structure, with gear ring circumferentially there is not interference, the circular-rotation of gear ring can not be affected, ensure the normal operation of gear ring.In addition, also can at gear ring arranged outside groove, shift fork stretches in groove and positions, and concrete mode does not limit.
Embodiment 1
Limited impression is 2.Its specific works principle is as follows:
One grade: screens element 63 and previous limited impression 64 clamping on push rod, longitudinally upper fixing between gear ring 4 and planet carrier 3, driving wheel external splines 11 is meshed with gear ring first internal spline 41, planet carrier second internal spline 32 of planet carrier 3 output terminal engages with output wheel external splines 71, applied external force drives driving wheel 1 to operate, driving wheel 1 will rotate through gear ring 4-planet carrier 3-output wheel 7 and transmit successively, and rotation is carried out equipment operation such as output band motor car wheel or lathe etc. through output wheel.
Second gear: push rod 61 promotes gear ring 4 and moves to driving wheel 1 side with planet carrier 3, limited impression 64 clamping of screens element 63 and latter one of push rod 61, driving wheel external splines 11 and gear ring first internal spline 41 are thrown off, driving wheel external splines 11 is meshed with planet carrier first internal spline 31, planet carrier second internal spline 32 of planet carrier 3 output terminal continues to engage with output wheel external splines 71, applied external force drives driving wheel 1 to operate, driving wheel 1 will rotate through planet carrier 3 and pass to output wheel 7, and rotation is carried out equipment operation such as output band motor car wheel or lathe etc. through output wheel.
This embodiment achieves the replacing of two gears, being convenient to the instant speed change when equipment such as vehicle or lathe runs, without the need to consuming more active force, reducing the amount of labour.
Embodiment 2
All the other are identical with embodiment 1, and difference is, limited impression is 3, and gear ring 4 output terminal is provided with gear ring second internal spline 42 be meshed with output wheel external splines 71.Its specific works principle is as follows:
One grade: screens element 63 and previous limited impression 64 clamping on push rod, longitudinally upper fixing between gear ring 4 and planet carrier 3, driving wheel external splines 11 is meshed with gear ring first internal spline 41, planet carrier second internal spline 32 of planet carrier 3 output terminal engages with output wheel external splines 71, applied external force drives driving wheel 1 to operate, driving wheel 1 will rotate through gear ring 4-planet carrier 3-output wheel 7 and transmit successively, and rotation is carried out equipment operation such as output band motor car wheel or lathe etc. through output wheel.
Second gear: push rod 61 promotes gear ring 4 and moves to driving wheel 1 side with planet carrier 3, screens element 63 limited impression 64 clamping middle with push rod 61, driving wheel external splines 11 and gear ring first internal spline 41 are thrown off, driving wheel external splines 11 is meshed with planet carrier first internal spline 31, planet carrier second internal spline 32 of planet carrier 3 output terminal continues to engage with output wheel external splines 71, applied external force drives driving wheel 1 to operate, driving wheel 1 will rotate through planet carrier 3 and pass to output wheel 7, and rotation is carried out equipment operation such as output band motor car wheel or lathe etc. through output wheel.
Third gear: push rod 61 promotes gear ring 4 and continues to driving wheel 1 side mobile with planet carrier 3, screens element 63 and the clamping of a push rod 61 rear limited impression 64, planet carrier first internal spline 31 continues to be meshed with driving wheel external splines 11, planet carrier second internal spline 32 and output wheel external splines 71 are thrown off, gear ring second internal spline 42 engages with output wheel external splines 71, applied external force drives driving wheel 1 to operate, driving wheel 1 will rotate through planet carrier 3-gear ring 4-output wheel 7 and transmit successively, and rotation is carried out equipment operation such as output band motor car wheel or lathe etc. through output wheel.
This embodiment achieves the replacing of three gears, being convenient to the instant speed change when equipment such as vehicle or lathe runs, without the need to consuming more active force, reducing the amount of labour.
All there is chamfering in the splined end that above embodiment mentions, the incision being convenient to spline connects, and the two ends of central shaft all can export.
Between central shaft, driving wheel, output wheel, gear ring and planet carrier except employing spline is fixedly connected with, also can adopt gear connection etc., concrete Placement does not limit.
Mechanical variable speed system disclosed by the invention, comprises driving wheel, central shaft, planetary gears, output wheel, and described planetary gears comprises central gear, planet wheel, planet carrier and gear ring, described gear ring and described planet carrier axial restraint; Described central shaft maintains static, and described central gear is shaped on described central shaft; Also comprise by described planet carrier and/or gear ring are connected to come the gearshift of output rotating speed regulation with described driving wheel and output wheel.By arranging gearshift, need to adjust the annexation between driving wheel and gear ring and/or planet carrier and output wheel according to different speed changes, export different velocity ratios, thus regulate the motion speed of the equipment such as wheel or lathe, this planetary gears is adopted to carry out gearshift adjustment, stability is better, wearing and tearing and noise all less, working life is longer, without the need to consuming more active force, working efficiency is higher, relative motor speed-regulating, use and maintenance cost lower.
Be more than the description to the embodiment of the present invention, by the above-mentioned explanation to the disclosed embodiments, professional and technical personnel in the field realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a mechanical variable speed system, is characterized in that, the output unit comprising active transmission device, arrangements for speed regulation and be in transmission connection with described arrangements for speed regulation; Described active transmission device is driving wheel, described arrangements for speed regulation comprise central shaft and are installed on the planetary gears on described central shaft, described planetary gears comprises central gear, planet wheel, planet carrier and gear ring, described gear ring and described planet carrier axial restraint; Described central shaft maintains static, and described central gear is shaped on described central shaft;
Described output unit is the output wheel being arranged at described planetary gears output terminal;
Described mechanical variable speed system also comprises by being connected with described driving wheel and output wheel by described planet carrier or described planet carrier and gear ring being connected to come the gearshift of output rotating speed regulation with described driving wheel and output wheel;
Placement between described driving wheel and described gear ring is spline joint, and the output terminal of described driving wheel is provided with driving wheel external splines, and described gear ring input end is provided with gear ring first internal spline be meshed with described driving wheel external splines;
Placement between described driving wheel and described planet carrier is spline joint, and the input end of described planet carrier is provided with planet carrier first internal spline be meshed with described driving wheel external splines.
2. mechanical variable speed system according to claim 1, it is characterized in that, between described planet carrier and described output wheel, Placement is spline joint, the output terminal of described planet carrier is provided with planet carrier second internal spline, and the input end of described output wheel is provided with the output wheel external splines be meshed with described planet carrier second internal spline.
3. mechanical variable speed system according to claim 2, is characterized in that, described gear ring output terminal is provided with gear ring second internal spline be meshed with described output wheel external splines.
4. mechanical variable speed system according to claim 3, is characterized in that, described arrangements for speed regulation also comprise the positioning means by described gear ring and described planet carrier axial restraint.
5. mechanical variable speed system according to claim 4, it is characterized in that, described positioning means comprises the position limit pin be fixedly installed on inside described gear ring, and the outer groove be positioned at outside described planet carrier, described position limit pin stretches in described outer groove, and described position limit pin can along described outer groove circumferential running.
6. mechanical variable speed system according to claim 5, is characterized in that, described gearshift comprises support, be arranged on described support for promoting push rod that described gear ring vertically moves and the position-limit mechanism for limiting described push rod stroke.
7. mechanical variable speed system according to claim 6, it is characterized in that, described support is provided with through hole, and described position-limit mechanism comprises the limited impression be arranged on described push rod and the screens element being positioned at described through hole, and described limited impression is at least 2.
8. mechanical variable speed system according to claim 7, is characterized in that, the front end of described push rod is also provided with the shift fork longitudinally fixing with described gear ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210048350.6A CN103291858B (en) | 2012-02-29 | 2012-02-29 | A kind of mechanical variable speed system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210048350.6A CN103291858B (en) | 2012-02-29 | 2012-02-29 | A kind of mechanical variable speed system |
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| Publication Number | Publication Date |
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| CN103291858A CN103291858A (en) | 2013-09-11 |
| CN103291858B true CN103291858B (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210048350.6A Expired - Fee Related CN103291858B (en) | 2012-02-29 | 2012-02-29 | A kind of mechanical variable speed system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104329455B (en) * | 2014-11-11 | 2016-05-18 | 合肥工业大学 | A kind of motor-driven planet circular system gearshift |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200975446Y (en) * | 2006-09-20 | 2007-11-14 | 刘硕毅 | Three-speed planet speed changing box |
| CN201521608U (en) * | 2009-04-30 | 2010-07-07 | 杜明乾 | Double-speed planetary reducer |
| CN201651190U (en) * | 2010-01-26 | 2010-11-24 | 沈阳安东机电工贸有限公司 | Planetary shift reducer of main shaft |
| WO2011162200A1 (en) * | 2010-06-23 | 2011-12-29 | Ntn株式会社 | Electrically assisted bicycle |
| CN202468869U (en) * | 2012-02-29 | 2012-10-03 | 张家港市九鼎机械有限公司 | Mechanical speed change system |
-
2012
- 2012-02-29 CN CN201210048350.6A patent/CN103291858B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200975446Y (en) * | 2006-09-20 | 2007-11-14 | 刘硕毅 | Three-speed planet speed changing box |
| CN201521608U (en) * | 2009-04-30 | 2010-07-07 | 杜明乾 | Double-speed planetary reducer |
| CN201651190U (en) * | 2010-01-26 | 2010-11-24 | 沈阳安东机电工贸有限公司 | Planetary shift reducer of main shaft |
| WO2011162200A1 (en) * | 2010-06-23 | 2011-12-29 | Ntn株式会社 | Electrically assisted bicycle |
| CN202468869U (en) * | 2012-02-29 | 2012-10-03 | 张家港市九鼎机械有限公司 | Mechanical speed change system |
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| CN103291858A (en) | 2013-09-11 |
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Effective date of registration: 20180913 Address after: 223600 Taipei Road, Shuyang Economic Development Zone, Suqian, Jiangsu Patentee after: JIANGSU SPEED ELECYTICAL MACHINERY STOCK CO., LTD. Address before: 215000 Industrial Zone, Daxin Town, Zhangjiagang City, Suzhou, Jiangsu Patentee before: Zhangjiagang Jiuding Machinery Co., Ltd. |
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Granted publication date: 20160113 Termination date: 20190228 |