CN101737476B - Power shunt type combined planetary reducer - Google Patents
Power shunt type combined planetary reducer Download PDFInfo
- Publication number
- CN101737476B CN101737476B CN2009102641428A CN200910264142A CN101737476B CN 101737476 B CN101737476 B CN 101737476B CN 2009102641428 A CN2009102641428 A CN 2009102641428A CN 200910264142 A CN200910264142 A CN 200910264142A CN 101737476 B CN101737476 B CN 101737476B
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- type combined
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- 239000003638 chemical reducing agent Substances 0.000 title claims description 26
- 238000013016 damping Methods 0.000 claims description 25
- 238000007789 sealing Methods 0.000 claims description 25
- 239000004033 plastic Substances 0.000 claims description 23
- 229920003023 plastic Polymers 0.000 claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 230000003068 static effect Effects 0.000 claims description 16
- 230000007246 mechanism Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 239000004809 Teflon Substances 0.000 claims description 7
- 229920006362 Teflon® Polymers 0.000 claims description 7
- 239000011230 binding agent Substances 0.000 claims description 3
- 238000005219 brazing Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000000670 limiting effect Effects 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 26
- 238000005461 lubrication Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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Classifications
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- 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
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/04—Combinations of toothed gearings only
- F16H37/041—Combinations of toothed gearings only for conveying rotary motion with constant gear ratio
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention discloses a power shunt type combined planetary reducer which comprises an input gear pair, a differential planet gear pair, a closed planet gear pair arranged between the input gear pair and the differential planet gear pair, a flexible shaft and a supporting rod. In the invention, only the supporting rod is grounded through a torque stand mechanism, and the torque stand mechanism can absorb vibration, angular deviation and displacement generated when a mill operates and can not influence gears and bearings, thereby prolonging the service life of components; and the planet rotating stand of the differential planet gear pair is an output flange for transferring a small part of torque, and the closed inner gear ring of the closed planet gear pair is connected with the output flange for transferring a large part of torque, i.e. the output flange and the closed inner gear ring are used for outputting the torque together in a shunt way. The power shunt type combined planetary reducer is more safe and reliable, has compact structure, small volume and light weight and saves a large amount of manufacturing cost. By adopting the direct connection mode of the output flange, a transmission shaft is omitted, thereby having the advantages of light weight and compact structure, greatly shortening the arrangement size and reducing the construction investment of a factory building.
Description
Technical field
The present invention relates to a kind of speed reducer, the power shunt type combined planetary reducer of especially a kind of high-power, large speed ratio and small volume.
Background technique
The center gearing speed-reducer is generally power bi-shunting, double reduction, symmetric arrangement, coaxial structure at present.Main motor links through the first order pinion shaft of shaft coupling and main reducing gear, and one-level small gear and two gearwheel engagements are accomplished chopped-off head and slowed down; The one-level gearwheel is connected with the secondary small gear through flexible shaft, and the secondary small gear meshes with gearwheel again, carries out double reduction, and moment of torsion is passed to grinding machine.Deficiency is that technology arrangement is taken up an area of greatly, cost is high, the cycle is long.
Summary of the invention
The present invention is directed to the deficiency of existing technology; A kind of power shunt type combined planetary reducer is provided; It generally adopts power bi-shunting, double reduction driving mechanism to present center gearing speed-reducer, and transmission speed is smaller, and volume is also bigger; And need the practical problem of a large amount of grounds, a kind of new power shunt type combined planetary reducer is provided.
For realizing above technical purpose, the present invention will take following technological scheme:
A kind of power shunt type combined planetary reducer comprises input gear pair, differential planet gear pair, places closed planetary gear pair, flexible shaft and strut between input gear pair and the differential planet gear pair, and flexible shaft is supported on the strut through clutch shaft bearing; Strut is supported in foundation of civil work through ball bearing; And flexible shaft is a load balancing mechanism, and said input gear pair comprises input shaft, driving gear and driven gear; Input shaft passes through second bearings on strut; Driving gear and input shaft are connected, and driven gear then is connected with flexible shaft, and driving gear is meshed with driven gear; Said closed planetary gear pair; Comprise sealing sun gear, sealing ring gear, closed planetary wheel, closed planetary axle and static planet carrier; The sealing sun gear floats and is placed on the flexible shaft; The closed planetary wheel is supported on the static planet carrier through the closed planetary axle, and this static planet carrier is connected with strut; Said differential planet gear is secondary; Comprise differential sun gear, differential ring gear, differential planetary gear train, differential planetary elastic axis and output flange; Flexible shaft one end is differential sun gear; Differential planetary gear train is installed on the output flange through the differential planetary elastic axis, and said differential planetary elastic axis is a load balancing mechanism; In addition, differential ring gear is connected with the sealing sun gear through flexible carrier, and the sealing ring gear then is connected with output flange.
The differential planetary elastic axis comprises bearing pin and the 3rd bearing, and said bearing pin cantilever is provided with, and this bearing pin cantilever end and output flange are connected; The opposite end of bearing pin cantilever end then is connected with baffle plate; Spielpassung is connected with resilient sleeve on the said bearing pin axis body, and this resilient sleeve one end nestles up the baffle plate setting, and the barrel outer surface of the other end is provided with the sleeve seam; The 3rd Bearing Installation is between sleeve seam and baffle plate, and differential planetary gear train is connected with the differential planetary elastic axis through the 3rd bearing.
Also press between said the 3rd bearing and the baffle plate and be provided with distance ring, this distance ring is coated on the resilient sleeve periphery.
Offer groove on the bearing pin axis body that said resilient sleeve coated.
Be provided with between said static planet carrier and the sealing sun gear and be used for differential ring gear and the wear-resistant vibration-damping thrust device that seals sun gear connecting body axial limiting; This wear-resistant vibration-damping thrust device comprises steel base, elastomeric plastics thrust layer and damping spring layer; Said elastomeric plastics thrust layer is arranged between steel base and the sealing sun gear, and the damping spring layer then is arranged between steel base and the static planet carrier.
Said elastomeric plastics thrust layer adopts polytetrafluoroethylmaterial material to be made, and this elastomeric plastics thrust layer directly to bind through binding agent with steel base be one.
Said elastomeric plastics thrust layer adopts the modified Teflon material to form, and this elastomeric plastics thrust layer and steel base are welded as a whole through brazing mode.
Described driving gear and driven gear all adopt the involute profile hardened face gear.
Flexible shaft is a hollow shaft.
Comprise respectively more than three in said differential planet gear pair and the closed planetary gear pair and be distributed in corresponding sun gear planet wheel on every side according to annular array.
According to above technological scheme, can realize following beneficial effect:
Speed reducer of the present invention, its output flange rotates with grinding mill barrel, has only torque stand mechanism to land; The vibration that torque stand mechanism produces in the time of can absorbing mill running, angular variation and displacement; Gear and bearing are not exerted an influence, in the elongated component life-span, guarantee reliable operation; Adopt differential stage planet carrier (being output flange) and enclosure class ring gear to shunt output torque jointly, safer, reliable, compact structure, volume is little, and is in light weight, practiced thrift a large amount of speed reducer manufacture costs; Adopt the output flange straight connection type, saved transmission shaft, in light weight, compact structure has shortened the layout size greatly, reduces the workshop building investment; Speed reducer of the present invention need not to design the foundation of civil work that bears the big load of speed reducer, and the construction investment expense of having practiced thrift has shortened the whole manufacturing cycle simultaneously.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 is an another kind of structural representation of the present invention;
Fig. 3 is the structure for amplifying schematic representation of differential planetary elastic axis according to the invention;
Fig. 4 is the structure for amplifying schematic representation of the pairing wear-resistant vibration-damping thrust device of II part among Fig. 2;
Fig. 5 is the structural representation of wear-resistant vibration-damping thrust device;
Among the figure, input shaft 11 driving gears 12 driven gears 13 flexible shafts 2 sealing sun gears 31 closed planetary axles 32 closed planetaries wheel 33 sealing ring gears 34 static planet carrier 35 struts 41 joint shaft bearings 42 differential planetary gear trains 51 differential planetary elastic axiss 52 output flanges 53 differential ring gear 54 the 3rd bearing 55 resilient sleeves 56 baffle plates 57 distance rings 58 flexible carriers 6 elastomeric plastics thrust layers 71 steel base 72 damping spring layers 73.
Embodiment
Below will combine accompanying drawing that technological scheme of the present invention at length is described.
Embodiment 1
As shown in Figure 1, power shunt type combined planetary reducer of the present invention comprises input gear pair, differential planet gear pair, places closed planetary gear pair, flexible shaft 2 and strut 41 between input gear pair and the differential planet gear pair; Flexible shaft 2 is supported on the strut 41 through clutch shaft bearing; These strut 41 two ends are supported in the torque stand mechanism through joint shaft bearing, and torque stand mechanism is fixed on the foundation of civil work, and flexible shaft 2 is load balancing mechanisms; Said input gear pair; Comprise input shaft 11, driving gear 12 and driven gear 13, on strut 41, driving gear 12 is connected with input shaft 11 input shaft 11 through second bearings; Driven gear 13 then is connected with flexible shaft 2, and driving gear 12 is meshed with driven gear 13; Said closed planetary gear pair; Comprise sealing sun gear 31, sealing ring gear 34, closed planetary wheel 33, closed planetary axle 32 and static planet carrier 35; Sealing sun gear 31 floats and is placed on the flexible shaft 2; Closed planetary wheel 33 is supported on the static planet carrier 35 through closed planetary axle 32, and this static planet carrier 35 is connected with strut 41; Said differential planet gear is secondary; Comprise differential sun gear, differential ring gear 54, differential planetary gear train 51, differential planetary elastic axis 52 and output flange 53; Flexible shaft 2 one ends are differential sun gear; Differential planetary gear train 51 is installed on the output flange 53 through differential planetary elastic axis 52, and to transmit the moment of fraction, said differential planetary elastic axis 52 is load balancing mechanisms; In addition, differential ring gear 54 is connected with sealing sun gear 31 through flexible carrier 6, and sealing ring gear 34 then is connected with output flange 53, and to transmit most moment, therefore, said differential ring gear 54 and sealing sun gear 31 are to float to be provided with.
Differential planetary elastic axis 52 is cantilever structure, and is as shown in Figure 3, and this differential planetary elastic axis 52 comprises bearing pin; Said bearing pin cantilever is provided with, and this bearing pin cantilever end and output flange 53 are connected, and the opposite end of bearing pin cantilever end then is connected with baffle plate 57; Spielpassung is connected with resilient sleeve 56 on the said bearing pin axis body, and these resilient sleeve 56 1 ends nestle up baffle plate 57 and are provided with, and the barrel outer surface of the other end is provided with the sleeve seam; And the 3rd bearing 55 is installed between sleeve seam and the baffle plate 57, and differential planetary gear train 51 is connected with differential planetary elastic axis 52 through the 3rd bearing 55, also presses between said the 3rd bearing 55 and the baffle plate 57 to be provided with distance ring 58; This distance ring 58 is coated on resilient sleeve 56 peripheries; And offer groove on the bearing pin axis body that resilient sleeve 56 is coated, said the 3rd bearing 55 can be selfaligning roller bearing or tapered roller bearing, therefore; Because differential planetary gear train 51 receives two tangential forces: the angle amount of deflection that one of them causes from the bending of output flange 53 upper pins; The angle amount of deflection that another bending that then comes from resilient sleeve 56 causes is when these two tangential forces put on differential planet gear secondary 51 last times of differential planetary gear train simultaneously, because both are in the opposite direction; Can cancel out each other; Then the amount of deflection of each gear contacting point will followed a circular movement, this means the axis of gear contact will be not can be owing to the inaccuracy of angular positioning to laterally inclined, also can be leading owing to the torsional deflection of output flange 53; In addition; Because gear has the tendency of less off-axis, the output flange 53 of single side no longer twists, and can think that gear all has the probability of very high maintenance centering in all contact pointss; So when adopting this differential planetary elastic axis 52; Even use the narrower gear of the facewidth, also still can avoid stress to concentrate, therefore the specific power at axial direction can improve.
In addition; Described driving gear 12 all adopts the involute profile hardened face gear with driven gear 13; Said flexible shaft 2 is a hollow shaft, is distributed in corresponding sun gear planet wheel on every side and comprise respectively more than three in differential planet gear pair and the closed planetary gear pair according to annular array.
Embodiment's 2 described technological schemes and embodiment 1 are basic identical; Just among the embodiment 2; Between static planet carrier 35 and sealing sun gear 31, be provided with and be used for differential ring gear 54 and the wear-resistant vibration-damping thrust device that seals sun gear 31 connecting body axial limitings; This wear-resistant vibration-damping thrust device comprises steel base 72, elastomeric plastics thrust layer 71 and damping spring layer 73; Said elastomeric plastics thrust layer 71 is arranged between steel base 72 and the sealing sun gear 31, and damping spring layer 73 then is arranged between steel base 72 and the static planet carrier 35.
Said elastomeric plastics thrust layer 71 adopts polytetrafluoroethylmaterial materials to be made, and this elastomeric plastics thrust layer 71 directly to bind through binding agent with steel base 72 be one; Perhaps this elastomeric plastics thrust layer 71 adopts modified Teflon material to form, and this elastomeric plastics thrust layer 71 and steel base 72 are welded as a whole through brazing mode.
In addition; Said steel base 72 is provided with ringwise, and elastomeric plastics thrust layer 71 forms according to the annular array distributed and arranged by a plurality of resilient pads, simultaneously; Resilient pad of every installation on steel base 72; At the opposing side of steel base 72 a slice butterfly spring is installed accordingly, promptly damping spring layer 73 is to be formed according to the form setting that annular array distributes by the multi-disc butterfly spring, and resilient pad, steel base 72 and butterfly spring link into an integrated entity through threaded fastener.
Because the friction layer of wear-resistant vibration-damping thrust device of the present invention is an elastomeric plastics thrust layer 71, material adopts the teflon of teflon or modification, has the little (dry friction: 0.16～0.22 of friction factor; Drop lubrication: 0.013～0.040), advantage such as chemical stability is good, and thermal conductivity is little; Especially with friction pair to when mill, its surface layer teflon shifts to surface of friction pair, forms more stable teflon solid lubricant film; Thereby under the oil-free lubrication condition; Can have longer working life, and have under the condition of oil lubrication, increase exponentially its working life especially.Damping spring layer 73 is made up of one or one group of damping spring; The damping spring that here uses has that the buffering vibration absorption ability is strong, the axial space position takies little characteristics; Can effectively alleviate because the impact that the speed reducer vibration causes; Protection elastomeric plastics thrust layer 71 is not damaged by rigid impulse, thereby guarantees the safe and reliable work of this wear-resistant vibration-damping thrust device.
Therefore; When speed reducer vibration causes differential stage ring gear and sealing sun gear 31 connecting body generation axial floats, and when contact with wear-resistant vibration-damping thrust device, elastomeric plastics thrust layer 71 is a contact friction face; Its material has excellent abrasive can; Can effectively protect revolving meber and wear-resistant vibration-damping thrust device itself not to receive frictionally damage, and damping spring layer 73 can absorb impact force, can effectively protect revolving meber and wear-resistant vibration-damping thrust device not damaged by rigid impulse.
Claims (10)
1. power shunt type combined planetary reducer; It is characterized in that: comprise input gear pair, differential planet gear pair, place closed planetary gear pair, flexible shaft and strut between input gear pair and the differential planet gear pair; Flexible shaft is supported on the strut through clutch shaft bearing; Strut is supported in foundation of civil work through ball bearing, wherein:
The input gear pair comprises input shaft, driving gear and driven gear, and on strut, driving gear and input shaft are connected input shaft through second bearings, and driven gear then is connected with flexible shaft, and driving gear is meshed with driven gear;
The closed planetary gear pair; Comprise sealing sun gear, sealing ring gear, closed planetary wheel, closed planetary axle and static planet carrier; The sealing sun gear floats and is placed on the flexible shaft, and the closed planetary wheel is supported on the static planet carrier through the closed planetary axle, and this static planet carrier is connected with strut;
Differential planet gear is secondary; Comprise differential sun gear, differential ring gear, differential planetary gear train, differential planetary elastic axis and output flange; Flexible shaft one end is differential sun gear; Differential planetary gear train is installed on the output flange through the differential planetary elastic axis, and said differential planetary elastic axis is a load balancing mechanism;
Differential ring gear is connected with the sealing sun gear through flexible carrier, and the sealing ring gear then is connected with output flange.
2. power shunt type combined planetary reducer according to claim 1 is characterized in that, the differential planetary elastic axis comprises bearing pin and the 3rd bearing; Said bearing pin cantilever is provided with; This bearing pin cantilever end and output flange are connected, and the opposite end of bearing pin cantilever end then is connected with baffle plate, and Spielpassung is connected with resilient sleeve on the said bearing pin axis body; This resilient sleeve one end nestles up the baffle plate setting; The barrel outer surface of the other end is provided with the sleeve seam, and the 3rd Bearing Installation is between sleeve seam and baffle plate, and differential planetary gear train is connected with the differential planetary elastic axis through the 3rd bearing.
3. power shunt type combined planetary reducer according to claim 2 is characterized in that, also presses between said the 3rd bearing and the baffle plate to be provided with distance ring, and this distance ring is coated on the resilient sleeve periphery.
4. power shunt type combined planetary reducer according to claim 2 is characterized in that, offers groove on the bearing pin axis body that said resilient sleeve coated.
5. power shunt type combined planetary reducer according to claim 1; It is characterized in that; Be provided with between said static planet carrier and the sealing sun gear and be used for differential ring gear and the wear-resistant vibration-damping thrust device that seals sun gear connecting body axial limiting; This wear-resistant vibration-damping thrust device comprises steel base, elastomeric plastics thrust layer and damping spring layer; Said elastomeric plastics thrust layer is arranged between steel base and the sealing sun gear, and the damping spring layer then is arranged between steel base and the static planet carrier.
6. power shunt type combined planetary reducer according to claim 5 is characterized in that, said elastomeric plastics thrust layer adopts polytetrafluoroethylmaterial material to be made, and this elastomeric plastics thrust layer directly to bind through binding agent with steel base be one.
7. power shunt type combined planetary reducer according to claim 5 is characterized in that, said elastomeric plastics thrust layer adopts the modified Teflon material to form, and this elastomeric plastics thrust layer and steel base are welded as a whole through brazing mode.
8. power shunt type combined planetary reducer according to claim 1 is characterized in that described driving gear and driven gear all adopt the involute profile hardened face gear.
9. power shunt type combined planetary reducer according to claim 1 is characterized in that, flexible shaft is a hollow shaft.
10. according to the described power shunt type combined planetary reducer of 1 to 9 arbitrary claim; It is characterized in that, said differential planet gear secondary with the closed planetary gear pair in comprise respectively more than three and be distributed in corresponding sun gear planet wheel on every side according to annular array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102641428A CN101737476B (en) | 2009-12-30 | 2009-12-30 | Power shunt type combined planetary reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102641428A CN101737476B (en) | 2009-12-30 | 2009-12-30 | Power shunt type combined planetary reducer |
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| Publication Number | Publication Date |
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| CN101737476A CN101737476A (en) | 2010-06-16 |
| CN101737476B true CN101737476B (en) | 2012-02-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009102641428A Active CN101737476B (en) | 2009-12-30 | 2009-12-30 | Power shunt type combined planetary reducer |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580819B (en) * | 2012-02-27 | 2015-01-07 | 南京凯盛国际工程有限公司 | Novel vertical milling limiting device |
| CN102661359B (en) * | 2012-05-10 | 2015-04-01 | 中信机电制造公司科研设计院 | Speed reducer for heavy-duty vehicle |
| CN105736666A (en) * | 2016-04-15 | 2016-07-06 | 南京高精齿轮集团有限公司 | Differential planet type vertical mill gearbox |
| CN114877029A (en) * | 2022-05-11 | 2022-08-09 | 吉林大学 | Robot intelligent servo joint and control method based on 3K planetary gear reducer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006308039A (en) * | 2005-05-02 | 2006-11-09 | Nsk Ltd | Continuously variable transmission |
| CN101285519A (en) * | 2008-06-02 | 2008-10-15 | 唐君源 | Flexible starting speed reducer controlled by explosion-proof type friction plate |
| CN201173275Y (en) * | 2008-04-15 | 2008-12-31 | 苏柏才 | Continuous speed regulation planetary gear speed reducer |
| CN201610930U (en) * | 2009-12-30 | 2010-10-20 | 南京高精重载齿轮制造有限公司 | Power split type combined planetary speed reducer |
-
2009
- 2009-12-30 CN CN2009102641428A patent/CN101737476B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006308039A (en) * | 2005-05-02 | 2006-11-09 | Nsk Ltd | Continuously variable transmission |
| CN201173275Y (en) * | 2008-04-15 | 2008-12-31 | 苏柏才 | Continuous speed regulation planetary gear speed reducer |
| CN101285519A (en) * | 2008-06-02 | 2008-10-15 | 唐君源 | Flexible starting speed reducer controlled by explosion-proof type friction plate |
| CN201610930U (en) * | 2009-12-30 | 2010-10-20 | 南京高精重载齿轮制造有限公司 | Power split type combined planetary speed reducer |
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| CN101737476A (en) | 2010-06-16 |
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Effective date of registration: 20191010 Address after: 211103 No. 79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province Co-patentee after: Nanjing High Precision Transmission Equipment Manufacturing Group Co., Ltd. Patentee after: Nanjing High Precision Gear Group Co., Ltd. Address before: 210012 Youjiawa No. 3, Xiaohang Outside Zhonghua Gate, Nanjing, Jiangsu Province Patentee before: Nanjing High Precision Gear Group Co., Ltd. Effective date of registration: 20191010 Address after: 211103 No. 79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province Co-patentee after: Nanjing High Precision Transmission Equipment Manufacturing Group Co., Ltd. Patentee after: Nanjing High Precision Gear Group Co., Ltd. Address before: 210012 Youjiawa No. 3, Xiaohang Outside Zhonghua Gate, Nanjing, Jiangsu Province Patentee before: Nanjing High Precision Gear Group Co., Ltd. |
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Effective date of registration: 20200513 Address after: No. 79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province, 210000 Patentee after: NANJING HIGH-SPEED & ACCURATE GEAR GROUP Co.,Ltd. Address before: 211103 No. 79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province Co-patentee before: Nanjing High Precision Transmission Equipment Manufacturing Group Co., Ltd. Patentee before: NANJING HIGH-SPEED & ACCURATE GEAR GROUP Co.,Ltd. |