CN104696472B - A kind of composite axial-flow hydrotransmitter and stepless speed variator - Google Patents
A kind of composite axial-flow hydrotransmitter and stepless speed variator Download PDFInfo
- Publication number
- CN104696472B CN104696472B CN201510021353.4A CN201510021353A CN104696472B CN 104696472 B CN104696472 B CN 104696472B CN 201510021353 A CN201510021353 A CN 201510021353A CN 104696472 B CN104696472 B CN 104696472B
- Authority
- CN
- China
- Prior art keywords
- input
- gear
- output
- line
- connects
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/06—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the hydrokinetic type
- F16H47/08—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the hydrokinetic type the mechanical gearing being of the type with members having orbital motion
Abstract
The invention provides a kind of composite axial-flow hydrotransmitter, its drip irrigation device is, output planetary frame (23) connects with input gear pair (4), input gear pair (4) connects with line of input carrier (25), output gear (26) connects with line of input carrier (27), output gear (29) connects with output shaft (3), input gear (24), input small gear (28) and connect with axial flow fluid torque converter (6) with free wheel device (5), axial flow fluid torque converter (6) connects with output gear wheel set (7), output gear wheel set (7) and input gear ring (21) connect with input shaft (1).
Description
Technical field
The invention belongs to fluid torque converter and speed change field, more particularly, it is a kind of composite axial-flow hydrotransmitter for various surface car, boats and ships, railway locomotive and lathe and stepless speed variator.
Background technique
At present, fluid torque converter all designs according to principles such as hydrostaticss, and the power that it can transmit is little, and efficiency is not high; In addition, cost is high.
Summary of the invention
Instant invention overcomes the deficiencies in the prior art, provide a kind of working life extending motor, structure is simple, and manipulation is convenient, low cost, the composite axial-flow hydrotransmitter of efficient energy-saving and stepless speed variator.
In order to realize object of the present invention, below the technical solution used in the present invention:
A kind of composite axial-flow hydrotransmitter, comprises input shaft (1), output shaft (3), input gear pair (4), free wheel device (5), axial flow fluid torque converter (6), output gear wheel set (7), is provided with planetary pinion (20) between described input shaft (1) and output shaft (3), input gear ring (21), fixed gear ring (22), output planetary frame (23), input gear (24), line of input carrier (25), output gear (26), line of input carrier (27), input small gear (28), output gear (29), input gear ring (21) is by the planetary pinion (20) on output planetary frame (23) and fixed gear ring (22), output planetary frame (23) cooperating, the input end (51) of fixed gear ring (22) and free wheel device (5) connects with fixed element, output planetary frame (23) connects with the input gear (41) of input gear pair (4), the output gear (42) of input gear pair (4) connects with line of input carrier (25), and line of input carrier (25) is by the planetary pinion (20) on it and input gear (24), output gear (26) cooperating, output gear (26) connects with line of input carrier (27), and line of input carrier (27) is by the planetary pinion (20) on it and input small gear (28), output gear (29) cooperating, output gear (29) connects with output shaft (3), input gear (24), input small gear (28) and connect with the output terminal (62) of axial flow fluid torque converter (6) with the output terminal (52) of free wheel device (5), the input end (61) of axial flow fluid torque converter (6) connects with the output gear (72) of output gear wheel set (7), and input gear (71) and input gear ring (21) of output gear wheel set (7) connect with input shaft (1).
The element that each needs described connect, directly can connect, when by some other element separate, can adopt the method for joining shaft, hollow or hitch, pass or stride across some other elements, being attached thereto; When connect element be gear or gear ring time, then engage each other or connect; Each does not need the element connected, and can relatively rotate.
The velocity ratio of each gear pair described and gear, designs according to actual needs.
Described fluid torque converter can select fluid coupling, pressure motor and oil hydraulic pump and magnetic clutch.
When the present invention is applied to vehicle, when can travel according to vehicle, be subject to the size of resistance, automatically change the change of output torque and speed.
The present invention has following advantage:
(1) the most power of the present invention is by gear ring, planetary pinion, planet carrier, gear transmission, and thus transmission power and transmission efficiency all greatly improve, and structure is simple, are easier to maintenance;
(2) bending moment of the present invention and speed change complete automatically, high efficiency transmission can be realized, and except starting, motor and starter motor can be made to work in optimum range, compared with other speed changer, under the prerequisite of motor and starter motor equivalence, that reduce the manufacture cost of motor and starter motor;
(3) the present invention makes motor and starter motor be in running in economic speed region, namely make motor work in the speed range of very little disposal of pollutants, avoid motor when idling and high speed operation, discharge large quantity of exhaust gas, thus decrease the discharge of waste gas, be conducive to protection of the environment;
(4) the present invention can utilize inner speed discrepancy to play buffering and overload protection, is conducive to the working life extending motor and transmission system and starter motor, in addition, when running resistance increases, then can make the automatic reduction of speed of vehicle, on the contrary then raising speed, be conducive to the rideability improving vehicle;
(5) the present invention makes input power uninterrupted, can ensure that vehicle has good acceleration and higher average speed, the wearing and tearing of motor be reduced, extends interval mileage of major repair, be conducive to boosting productivity.
In addition, the present invention is a kind of composite axial-flow hydrotransmitter for various surface car, boats and ships, railway locomotive and lathe and stepless speed variator.
Accompanying drawing explanation
Figure of description is the structural drawing of the embodiment of the present invention, the joint in accompanying drawing between two elements, and use heavy line to represent and be fixedly connected with, fine line represents that two elements can relatively rotate.
Embodiment
Below in conjunction with Figure of description and embodiment, the present invention is described in further detail:
Embodiment one:
As shown in fig. 1, a kind of composite axial-flow hydrotransmitter, comprises input shaft 1, output shaft 3, input gear pair 4, free wheel device 5, axial flow fluid torque converter 6, output gear wheel set 7, is provided with planetary pinion 20 between described input shaft 1 and output shaft 3, input gear ring 21, fixed gear ring 22, output planetary frame 23, input gear 24, line of input carrier 25, output gear 26, line of input carrier 27, input small gear 28, output gear 29, input gear ring 21 is by the planetary pinion 20 on output planetary frame 23 and fixed gear ring 22, output planetary frame 23 cooperating, the input end 51 of fixed gear ring 22 and free wheel device 5 connects with fixed element, output planetary frame 23 connects with the input gear 41 of input gear pair 4, the output gear 42 of input gear pair 4 connects with line of input carrier 25, and line of input carrier 25 is by the planetary pinion 20 on it and input gear 24, output gear 26 cooperating, output gear 26 connects with line of input carrier 27, and line of input carrier 27 is by the planetary pinion 20 on it and input small gear 28, output gear 29 cooperating, output gear 29 connects with output shaft 3, input gear 24, input small gear 28 and connect with the output terminal 62 of axial flow fluid torque converter 6 with the output terminal 52 of free wheel device 5, the input end 61 of axial flow fluid torque converter 6 connects with the output gear 72 of output gear wheel set 7, and input gear 71 and the input gear ring 21 of output gear wheel set 7 connect with input shaft 1.
Input gear 24, line of input carrier 25 by the planetary pinion 20 in line of input carrier 25 the power flow concentration being delivered to this in output gear 26, output gear 26 is delivered to line of input carrier 27, line of input carrier 27, input small gear 28 again by the planetary pinion 20 in line of input carrier 27 the power flow concentration being delivered to this in output gear 29.
Because the rotating speed relations of distribution of each element above-mentioned can change, change according to rotating speed distribution between the two changes by two-way poower flow, when input gear 24, when the rotating speed of input small gear 28 is zero, line of input carrier 25, line of input carrier 27 reductions of speed increase square, when input gear 24, when the rotating speed of input small gear 28 constantly raises, output gear 26, the rotating speed of output gear 29 also increases, that is, when input gear 24, when the rotating speed of input small gear 28 changes, output gear 26, the rotating speed of output gear 29 and output shaft 3 also changes thereupon.
Input power is two-way through input shaft 1 power dividing, and the first via, through output gear wheel set 7, is delivered to axial flow fluid torque converter 6, then is delivered to input gear 24, input small gear 28, second tunnel is through input gear ring 21, again by the planetary pinion 20 on output planetary frame 23 power transimission to output planetary frame 23, output planetary frame 23 is again by input gear pair 4, be delivered to line of input carrier 25, input gear 24, line of input carrier 25 by the planetary pinion 20 in line of input carrier 25 the power flow concentration being delivered to this in output gear 26, be delivered to line of input carrier 27 again, line of input carrier 27, input small gear 28 again by the planetary pinion 20 in line of input carrier 27 the power flow concentration being delivered to this in output gear 29, be delivered to output shaft 3 again, thus achieve the power of motor is externally exported by output shaft 3.
For the present invention, when the rotating speed of input shaft 1 is constant, moment of torsion on output gear 26, output gear 29 and output shaft 3 changes with the change of its rotating speed, rotating speed is lower, and the moment of torsion be delivered on output gear 26, output gear 29 and output shaft 3 is larger, otherwise, then less, in the process, axial flow fluid torque converter 6 also plays bending moment, thus realizes the present invention can change moment and speed composite axial-flow hydrotransmitter with the difference of vehicle travel resistance.
When the present invention uses, if the input power of motor, input speed and load constant, namely the rotating speed of input shaft 1 and moment of torsion are constant, before vehicle starting, the rotating speed of output shaft 3 is zero, the input power of motor is through input shaft 1, be delivered to input gear ring 21, again by the planetary pinion 20 on output planetary frame 23 power transimission to output planetary frame 23, output planetary frame 23 is again by input gear pair 4, be delivered to line of input carrier 25, wherein, input gear 24 is flowed into owing to now there is no power or fewer power, input small gear 28, and the input end 51 of free wheel device 5 connects with fixed element, play restriction to turn to, make input gear 24, turning to of input small gear 28 can not be contrary with turning to of input, rotating speed is zero, now, be delivered to the power of line of input carrier 25, then by the planetary pinion 20 on it the power flow concentration being delivered to this in output gear 26, be delivered to line of input carrier 27 again, line of input carrier 27 again by the planetary pinion 20 on it the power flow concentration being delivered to this in output gear 29, be delivered to output shaft 3 again, when being delivered to the moment of torsion on output shaft 3, through transmission system be transferred to the tractive force that driving wheel produces be enough to overcome vehicle starting resistance time, automobile is then started to walk and is started to accelerate, the rotating speed of the output terminal 62 of axial flow fluid torque converter 6 also increases gradually, the input gear 24 be connected with it, the rotating speed of input small gear 28 also increases thereupon gradually, thus make output gear 26, the moment of torsion of output gear 29 and output shaft 3 reduces along with the increase of rotating speed.
Claims (1)
1. a composite axial-flow hydrotransmitter, comprise input shaft (1), output shaft (3), input gear pair (4), free wheel device (5), axial flow fluid torque converter (6), output gear wheel set (7), it is characterized in that: between described input shaft (1) and output shaft (3), be provided with planetary pinion (20), input gear ring (21), fixed gear ring (22), output planetary frame (23), input gear (24), line of input carrier (25), output gear (26), line of input carrier (27), input small gear (28), output gear (29), input gear ring (21) is by the planetary pinion (20) on output planetary frame (23) and fixed gear ring (22), output planetary frame (23) cooperating, the input end (51) of fixed gear ring (22) and free wheel device (5) connects with fixed element, output planetary frame (23) connects with the input gear (41) of input gear pair (4), the output gear (42) of input gear pair (4) connects with line of input carrier (25), line of input carrier (25) is by the planetary pinion (20) on it and input gear (24), output gear (26) cooperating, output gear (26) connects with line of input carrier (27), line of input carrier (27) is by the planetary pinion (20) on it and input small gear (28), output gear (29) cooperating, output gear (29) connects with output shaft (3), input gear (24), input small gear (28) and connect with the output terminal (62) of axial flow fluid torque converter (6) with the output terminal (52) of free wheel device (5), the input end (61) of axial flow fluid torque converter (6) connects with the output gear (72) of output gear wheel set (7), input gear (71) and input gear ring (21) of output gear wheel set (7) connect with input shaft (1).
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510877261.6A CN105333095A (en) | 2015-01-16 | 2015-01-16 | Compound axial-flow type torque converter |
| CN201510877135.0A CN105422783A (en) | 2015-01-16 | 2015-01-16 | Contiuously variable transmission of composite axial-flow type hydraulic torque converter |
| CN201510021353.4A CN104696472B (en) | 2015-01-16 | 2015-01-16 | A kind of composite axial-flow hydrotransmitter and stepless speed variator |
| HK15111103.4A HK1211667A1 (en) | 2015-01-16 | 2015-11-11 | A compound type axial flow hydraulic torque converter and continuously variable transmission |
| PCT/CN2016/070213 WO2016112804A1 (en) | 2015-01-16 | 2016-01-06 | Composite axial-flow type hydraulic torque converter and continuously variable transmission |
| CN201680004298.0A CN108027033A (en) | 2015-01-16 | 2016-01-06 | A kind of composite axial-flow hydrotransmitter and buncher |
| HK16104089.6A HK1216335A1 (en) | 2015-01-16 | 2016-04-11 | A composite type axial flow hydraulic torque converter |
| HK16110394.3A HK1222437A1 (en) | 2015-01-16 | 2016-09-01 | A compound type axial flow hydraulic torque converters continuously variable transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510021353.4A CN104696472B (en) | 2015-01-16 | 2015-01-16 | A kind of composite axial-flow hydrotransmitter and stepless speed variator |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510877135.0A Division CN105422783A (en) | 2015-01-16 | 2015-01-16 | Contiuously variable transmission of composite axial-flow type hydraulic torque converter |
| CN201510877261.6A Division CN105333095A (en) | 2015-01-16 | 2015-01-16 | Compound axial-flow type torque converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104696472A CN104696472A (en) | 2015-06-10 |
| CN104696472B true CN104696472B (en) | 2016-03-16 |
Family
ID=53343890
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510877135.0A Pending CN105422783A (en) | 2015-01-16 | 2015-01-16 | Contiuously variable transmission of composite axial-flow type hydraulic torque converter |
| CN201510021353.4A Active CN104696472B (en) | 2015-01-16 | 2015-01-16 | A kind of composite axial-flow hydrotransmitter and stepless speed variator |
| CN201510877261.6A Withdrawn CN105333095A (en) | 2015-01-16 | 2015-01-16 | Compound axial-flow type torque converter |
| CN201680004298.0A Pending CN108027033A (en) | 2015-01-16 | 2016-01-06 | A kind of composite axial-flow hydrotransmitter and buncher |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510877135.0A Pending CN105422783A (en) | 2015-01-16 | 2015-01-16 | Contiuously variable transmission of composite axial-flow type hydraulic torque converter |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510877261.6A Withdrawn CN105333095A (en) | 2015-01-16 | 2015-01-16 | Compound axial-flow type torque converter |
| CN201680004298.0A Pending CN108027033A (en) | 2015-01-16 | 2016-01-06 | A kind of composite axial-flow hydrotransmitter and buncher |
Country Status (3)
| Country | Link |
|---|---|
| CN (4) | CN105422783A (en) |
| HK (3) | HK1211667A1 (en) |
| WO (1) | WO2016112804A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422783A (en) * | 2015-01-16 | 2016-03-23 | 吴志强 | Contiuously variable transmission of composite axial-flow type hydraulic torque converter |
| CN107448574A (en) * | 2015-07-07 | 2017-12-08 | 广州市志变制能科技有限责任公司 | A kind of compound double-impeller torque converter and starter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3425297A (en) * | 1965-11-01 | 1969-02-04 | Inpower Works Ltd | Fluid torque transmitter |
| CN1109615C (en) * | 1997-12-23 | 2003-05-28 | 卢克摩擦片和离合器有限公司 | Gear box |
| CN101598198A (en) * | 2008-06-06 | 2009-12-09 | 吴志强 | A kind of composite inner cone output planetary cone type stepless variable speed unit |
| CN202091463U (en) * | 2011-05-16 | 2011-12-28 | 山推工程机械股份有限公司 | Novel hydraulic torque converter |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2900193B2 (en) * | 1990-12-13 | 1999-06-02 | 富士重工業株式会社 | Pressure control device for continuously variable transmission for vehicles |
| KR100626981B1 (en) * | 2004-07-21 | 2006-09-21 | 이종완 | Continuously variable transmission of expanded range |
| CN102022514B (en) * | 2009-09-09 | 2014-05-07 | 吴志强 | Composite axial-flow hydrotransmitter |
| WO2011093425A1 (en) * | 2010-01-28 | 2011-08-04 | 株式会社ユニバンス | Power transmission device |
| CN102297255A (en) * | 2011-08-04 | 2011-12-28 | 湖南江麓容大车辆传动股份有限公司 | Automatic transmission assembly and automatic transmission vehicle |
| CN102287498A (en) * | 2011-08-05 | 2011-12-21 | 南京工程学院 | Planet gear stepless speed changer |
| CN103939569B (en) * | 2014-05-07 | 2016-08-24 | 吴志强 | A kind of composite axial-flow hydrotransmitter and buncher |
| CN105422783A (en) * | 2015-01-16 | 2016-03-23 | 吴志强 | Contiuously variable transmission of composite axial-flow type hydraulic torque converter |
-
2015
- 2015-01-16 CN CN201510877135.0A patent/CN105422783A/en active Pending
- 2015-01-16 CN CN201510021353.4A patent/CN104696472B/en active Active
- 2015-01-16 CN CN201510877261.6A patent/CN105333095A/en not_active Withdrawn
- 2015-11-11 HK HK15111103.4A patent/HK1211667A1/en not_active IP Right Cessation
-
2016
- 2016-01-06 WO PCT/CN2016/070213 patent/WO2016112804A1/en active Application Filing
- 2016-01-06 CN CN201680004298.0A patent/CN108027033A/en active Pending
- 2016-04-11 HK HK16104089.6A patent/HK1216335A1/en unknown
- 2016-09-01 HK HK16110394.3A patent/HK1222437A1/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3425297A (en) * | 1965-11-01 | 1969-02-04 | Inpower Works Ltd | Fluid torque transmitter |
| CN1109615C (en) * | 1997-12-23 | 2003-05-28 | 卢克摩擦片和离合器有限公司 | Gear box |
| CN101598198A (en) * | 2008-06-06 | 2009-12-09 | 吴志强 | A kind of composite inner cone output planetary cone type stepless variable speed unit |
| CN202091463U (en) * | 2011-05-16 | 2011-12-28 | 山推工程机械股份有限公司 | Novel hydraulic torque converter |
Also Published As
| Publication number | Publication date |
|---|---|
| HK1211667A1 (en) | 2016-05-27 |
| HK1222437A1 (en) | 2017-06-30 |
| HK1216335A1 (en) | 2016-11-04 |
| CN104696472A (en) | 2015-06-10 |
| CN105333095A (en) | 2016-02-17 |
| CN105422783A (en) | 2016-03-23 |
| CN108027033A (en) | 2018-05-11 |
| WO2016112804A1 (en) | 2016-07-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104534053A (en) | Combined hydrodynamic transmission device and starter | |
| CN103953709B (en) | A kind of composite impeller type hydraulic torque converter | |
| CN105090391A (en) | Compound type torque limited type aqueous medium fluid coupling and starter | |
| CN104696472B (en) | A kind of composite axial-flow hydrotransmitter and stepless speed variator | |
| CN104696473B (en) | A kind of compound comprehensive hydraulic torque converter and stepless speed variator | |
| CN103953710B (en) | A kind of compound double-impeller torque converter and stepless speed variator | |
| CN103939565B (en) | A kind of composite type hydraulic torque converter with external overflow valve and stepless speed variator | |
| CN104696476A (en) | Combined impeller type hydraulic torque converter and continuously variable transmission | |
| CN104712727B (en) | A kind of compound type multi-element working wheel hydraulic torque converter and stepless speed variator | |
| CN104712726B (en) | A kind of compound type guide vane adjustable hydraulic torque converter and stepless speed variator | |
| CN104728384B (en) | A kind of compound adjustable hydraulic torque converter and stepless speed variator | |
| CN104653743A (en) | Composite double-turbine hydraulic torque converter and continuously variable transmission | |
| CN104696474A (en) | Combined centripetal type hydraulic torque converter and continuously variable transmission | |
| CN104696475A (en) | Combined double pump impeller type hydraulic torque converter and continuously variable transmission | |
| CN104653744A (en) | Composite overflow valve external type hydraulic torque converter and continuously variable transmission | |
| CN104696477A (en) | Combined double guide wheel type hydraulic torque converter and continuously variable transmission | |
| CN104653745A (en) | Composite inward-flow turbine type hydraulic torque converter and continuously variable transmission | |
| CN104500680A (en) | Compound type rear auxiliary chamber extension type torque-limiting hydraulic coupler and starter | |
| CN104633040A (en) | Compound type double-cavity fluid coupling and starter | |
| CN104534054A (en) | Combined variable speed fluid coupling and starter | |
| CN104482161A (en) | Compound hydraulic special-shaped coupler and starter | |
| CN103939560B (en) | A kind of stepless speed variator with twin-turbine torque converter | |
| CN103953708B (en) | A kind of compound type centripetal hydraulic torque converter and stepless speed variator | |
| CN102312975B (en) | The gear-driven fluid coupling of a kind of combined harmonic | |
| CN104976304A (en) | Compound type hydraulic special-shaped coupler and starter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1211667 Country of ref document: HK |
|
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: GR Ref document number: 1211667 Country of ref document: HK |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201222 Address after: 224600 in Kaiyuan Industrial Park, north of Zhongxin road and east of zhier Road, Xiangshui Economic Development Zone, Yancheng City, Jiangsu Province Patentee after: JIANGSU JIUZHOU TRANSMISSION TECHNOLOGY Co.,Ltd. Address before: Room 202-2, building B, North Industrial Park, Binhai Economic Development Zone, Yancheng City, Jiangsu Province Patentee before: Yancheng Binbo Machinery Technology Co.,Ltd. Effective date of registration: 20201222 Address after: Room 202-2, building B, North Industrial Park, Binhai Economic Development Zone, Yancheng City, Jiangsu Province Patentee after: Yancheng Binbo Machinery Technology Co.,Ltd. Address before: 510160 Room 502, Dongfeng West Road, Liwan District, Guangzhou, Guangdong, 502 Patentee before: Wu Zhiqiang |