CN104154845B - A kind of device measuring matched bearings end-play and measuring method - Google Patents
A kind of device measuring matched bearings end-play and measuring method Download PDFInfo
- Publication number
- CN104154845B CN104154845B CN201410431960.3A CN201410431960A CN104154845B CN 104154845 B CN104154845 B CN 104154845B CN 201410431960 A CN201410431960 A CN 201410431960A CN 104154845 B CN104154845 B CN 104154845B
- Authority
- CN
- China
- Prior art keywords
- bearing
- matched bearings
- rotating shaft
- magnetic bearing
- play
- 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
Landscapes
- Mounting Of Bearings Or Others (AREA)
- Rolling Contact Bearings (AREA)
Abstract
nullThe present invention measures the device of matched bearings end-play and includes base、The rotating shaft being installed in base、It is installed on the lifting force magnetic bearing of rotating shaft、Lower thrust magnetic bearing and the thrust bearing bracing ring that lifting force magnetic bearing and lower thrust magnetic bearing are separated，The upper end of rotating shaft extends beyond outside the upper surface of base，Upper end in rotating shaft is provided with matched bearings，It is arranged above the support of bearing at lifting force magnetic bearing，The support of bearing is provided with matched bearings is installed on bearing a set of cups therein，The outward flange of the support of bearing is close to the top of the sidewall of base，It is separately installed with double threaded screw and screw rod in the both sides of the support of bearing，The upper surface of rotating shaft is provided with shaft end ring、Be locked the axle head screw in rotating shaft upper surface and be sheathed on the bearing gland that shaft end ring is peripheral by shaft end ring，Gauge stand it is mounted with between double threaded screw and screw rod，Dial gauge it is mounted with on gauge stand，The gauge outfit of dial gauge is placed on axle head screw upper surface before measuring.
Description
Technical field:
The present invention relates to a kind of device measuring matched bearings end-play and measuring method, it belongs to Bearing testing field of measuring technique.
Background technology:
Bearing clearance, i.e. spindle hold when not being installed on axle or bearing housing, a side of its inner ring or outer ring are fixed, amount of movement when then making a loose side move radially or axially.According to moving direction, end-play and end-play can be divided into.The performances such as the rolling fatigue life of bearing, temperature rise, noise, vibration are had an impact by the size of the play (referred to as working gap) during operating.
In the actual production process of magnetic suspension air blower, matched bearings has obtained substantial amounts of application in plant equipment.These bearings play key player during producing actual stable operation, and the control to equipment fault also has the biggest effect.Magnetic levitation apparatus belongs to high-speed equipment, and the maximum speed of its rotor can be more than 40000rpm, if bearing breaks down and can cause the most serious production accident in such cases.Meanwhile, because not knowing about the concrete numerical value of bearing axial play when producing assembling, assembling progress is greatly affected.
Therefore, necessary prior art improves to solve the deficiency of prior art.
Summary of the invention:
In order to overcome the deficiencies in the prior art, it is an object of the invention to provide a kind of device measuring matched bearings end-play and measuring method, it is capable of the measurement to matched bearings bearing clearance and controls, and then confirm whether institute's survey bearing meets technology requirement, it is to avoid because using defective bearing and production development accident.
nullThe present invention adopts the following technical scheme that a kind of device measuring matched bearings end-play，It is characterized in that: include base、The rotating shaft of the center being installed in base、It is installed in base and is sheathed on the peripheral lifting force magnetic bearing of rotating shaft and lower thrust magnetic bearing、It is sheathed on the thrust bearing bracing ring that rotating shaft is peripheral and lifting force magnetic bearing and lower thrust magnetic bearing is separated，The upper end of described rotating shaft extends beyond outside the upper surface of base，Upper end in described rotating shaft is provided with matched bearings，Described lifting force magnetic bearing be arranged above one be sheathed on the support of bearing that rotating shaft is peripheral，The described support of bearing is provided with one matched bearings is installed on bearing a set of cups therein，The outward flange of the described support of bearing is close to the top of the sidewall of base，It is separately installed with double threaded screw and screw rod in the both sides of the described support of bearing，Position corresponding with double threaded screw and screw rod on described base is formed with screw，The upper surface of described rotating shaft is provided with shaft end ring、Shaft end ring is locked the axle head screw in rotating shaft upper surface and be sheathed on shaft end ring peripheral and be positioned at the bearing gland above matched bearings，It is mounted with gauge stand between described double threaded screw and screw rod，It is mounted with dial gauge on described gauge stand，The gauge outfit of described dial gauge is placed on axle head screw upper surface before measuring.
Further, being positioned at the position outside bearing holder (housing, cover) cup and be formed with a preformed hole running through support of bearing upper and lower surface on the described support of bearing, be equipped with two electric current lines in described preformed hole, one is the first electric current line, and another root is the second electric current line.
Further, the most corresponding mutually with the preformed hole on the support of bearing on described lifting force magnetic bearing and thrust bearing bracing ring position is respectively formed with a through hole.
Further, one end of described first electric current line is connected on lifting force magnetic bearing, the other end is connected to external power supply, one end of described second electric current line is connected on lower thrust magnetic bearing after sequentially passing through the through hole on the preformed hole on the support of bearing, lifting force magnetic bearing and the through hole on thrust bearing bracing ring, and the other end is connected to external power supply.
Further, the external arc diameter of described shaft end ring is more than the inner ring internal diameter of matched bearings, and is less than the inner ring external diameter of matched bearings.
Further, described bearing gland is positioned at the top of bearing a set of cups, and described bearing gland is the plate body shape being provided with center hole, and the diameter of described bearing gland center hole is more than the inner ring external diameter of matched bearings, and is less than the outer ring internal diameter of matched bearings.
Further, described double threaded screw is positioned at the position above gauge stand and nut is installed.
Further, the device of described measurement matched bearings end-play also includes alignment pin fixed together for base, lifting force magnetic bearing, lower thrust magnetic bearing and thrust bearing bracing ring location.
The present invention also adopts the following technical scheme that the measuring method of a kind of device measuring matched bearings end-play, and it comprises the steps:
(1), being mounted to countershaft brought forward, measure matched bearings and be superimposed on thickness together, be designated as Lmm, the length dimension of the position for installing matched bearings measuring rotating shaft upper end is Dmm, wherein D=L+0.3～0.5；
(2), it is energized to lower thrust magnetic bearing by the second electric current line, lower thrust magnetic bearing produces electromagnetic force, make rotating shaft to lower stress, now the inner ring of matched bearings is compressed by the lower surface of shaft end ring, remain powered on, the gauge outfit of dial gauge is compressed the upper surface of axle head screw, and the pointer of dial gauge is returned to zero；
(3), to lower thrust magnetic bearing power-off, it is energized to again by the first electric current line lifting force magnetic bearing, lifting force magnetic bearing produces electromagnetic force, make rotating shaft upwards stress, now the inner ring of matched bearings is compressed by being positioned at the step surface below matched bearings in rotating shaft, remain powered on, record dial gauge reading now, be designated as Amm；
(4), calculate matched bearings end-play, be given as follows:
The end-play of matched bearings=| A |-(L-D)；
(5), power-off, and dismantle matched bearings.
There is advantages that the use by matched bearings axial play clearance detection apparatus, ensure that all bearings being installed on equipment are all qualified, the requirement of equipment can be met, thus reduce the fault rate of bearing, improve the stability that equipment runs, ensure the stable operation produced.
Accompanying drawing illustrates:
Fig. 1 is the structural representation that the present invention measures the device of matched bearings end-play.
Fig. 2 is Fig. 1 shaft, axle head screw and the structural representation of shaft end ring.
When Fig. 3 is rotating shaft stress after lower thrust magnetic bearing is energized, the partial enlarged drawing at matched bearings.
When Fig. 4 is rotating shaft stress after lifting force magnetic bearing is energized, the partial enlarged drawing at matched bearings.
Wherein:
1-base；2-rotating shaft；3-lifting force magnetic bearing；Thrust magnetic bearing under 4-；5-thrust bearing bracing ring；6-alignment pin；7-matched bearings；The 8-support of bearing；9-the second screw；10-bearing a set of cups；11-the first screw；12-shaft end ring；13-axle head screw；14-bearing gland；15-double threaded screw；16-screw rod；17-gauge stand；18-the 3rd screw；19-dial gauge；20-nut.
Detailed description of the invention:
Refer to shown in Fig. 1 and Fig. 2, the present invention measure the device of matched bearings end-play include base 1, the rotating shaft 2 of the center that is installed in base 1, be installed in base 1 and the lifting force magnetic bearing 3 that is sheathed on rotating shaft 2 periphery and lower thrust magnetic bearing 4, be sheathed on rotating shaft 2 periphery and thrust bearing bracing ring 5 that lifting force magnetic bearing 3 and lower thrust magnetic bearing 4 are separated, wherein base 1, lifting force magnetic bearing 3, lower thrust magnetic bearing 4 and thrust bearing bracing ring 5 position fixed together by alignment pin 6.The upper end of shaft 2 of the present invention extends beyond outside the upper surface of base 1, and the upper end in rotating shaft 2 is provided with matched bearings 7.Its shaft 2 is step-like, rotating shaft 2 is positioned at the position below matched bearings 7 and is formed with a step surface (sign).
The present invention is arranged above the support of bearing 8 being sheathed on rotating shaft 2 periphery at lifting force magnetic bearing 3, the support of bearing 8 is pressed in lifting force magnetic bearing 3, the support of bearing 8 is provided with one matched bearings 7 is installed on bearing a set of cups 10 therein, together with wherein the support of bearing 8 and bearing a set of cups 10 are connected and installed in by the first screw 11.The support of bearing 8 is positioned at the position outside bearing holder (housing, cover) cup 10 and is formed with a preformed hole (not shown) running through the support of bearing 8 upper and lower surface, two electric current lines it are equipped with in this preformed hole, one is the first electric current line, another root is the second electric current line, wherein one end of the first electric current line is connected on lifting force magnetic bearing 3, and the other end is connected to external power supply.Simultaneously the most corresponding mutually with the preformed hole on the support of bearing 8 on lifting force magnetic bearing 3 and thrust bearing bracing ring 5 position is also respectively formed with through hole (not shown), wherein one end of the second electric current line is connected on lower thrust magnetic bearing 4 after sequentially passing through the through hole on the preformed hole on the support of bearing 8, lifting force magnetic bearing 3 and the through hole on thrust bearing bracing ring 5, and the other end is connected to external power supply.The outward flange of the support of bearing 8 is close to the top of the sidewall of base 1, is separately installed with double threaded screw 15 and screw rod 16 in the both sides of the support of bearing 8, and wherein corresponding with double threaded screw 15 and screw rod 16 on base 1 position is formed with screw (not shown).The upper surface of rotating shaft 2 is provided with shaft end ring 12, shaft end ring 12 is locked the axle head screw 13 in rotating shaft 2 upper surface and be sheathed on shaft end ring 12 periphery and be positioned at the bearing gland 14 above matched bearings 7, wherein the external arc diameter of shaft end ring 12 more than the inner ring internal diameter of matched bearings 7 so that block matched bearings 7 when measuring non-bulging outside the upper surface of rotating shaft 2, and be slightly less than the inner ring external diameter of matched bearings 7 and then do not affect the rotation of matched bearings 7.Wherein bearing gland 14 is positioned at the top of bearing a set of cups 10 and compresses the outer ring of matched bearings 7 by the second screw 9 and together with being installed on bearing a set of cups 10, bearing gland 14 is the plate body shape being provided with center hole, the diameter of bearing gland 14 center hole is more than the inner ring external diameter of matched bearings 7 and then does not affect the rotation of matched bearings 7 inner ring, and is less than the outer ring internal diameter of matched bearings 7 and then ensures that bearing gland 14 compresses the outer ring of matched bearings 7.
The present invention is mounted with between double threaded screw 15 and screw rod 16 gauge stand 17, gauge stand 17 is mounted with dial gauge 19 precision measuring instrument such as grade by the 3rd screw 18.Double threaded screw 15 is positioned at the position above gauge stand 17 nut 20 is installed, by nut 20, double threaded screw 15 is screwed in the screw on base 1, and by screw rod 16 is screwed in the screw on base 1, and then before measuring the gauge outfit of dial gauge 19 is placed on the upper surface of axle head screw 13.
Refer to Fig. 1 to Fig. 2, and combine shown in Fig. 3 to Fig. 4, the present invention measures the measurement device method of matched bearings end-play, comprises the steps:
(1) before, matched bearings 7 being installed, measure matched bearings 7 and be superimposed on thickness together, it is designated as L (unit: mm), the length dimension of the position for installing matched bearings 7 measuring rotating shaft 2 upper end is D (unit: mm), wherein D=L+0.3～0.5 (unit: mm)；
(2), it is energized to lower thrust magnetic bearing 4 by the second electric current line, lower thrust magnetic bearing 4 produces electromagnetic force, make rotating shaft 2 to lower stress, now the inner ring of matched bearings 7 is compressed by the lower surface of shaft end ring 12, remain powered on, the gauge outfit of dial gauge 19 is compressed the upper surface of axle head screw 13, and the pointer of dial gauge 19 is returned to zero；
(3), to the power-off of lower thrust magnetic bearing 4, it is energized to again by the first electric current line lifting force magnetic bearing 3, lifting force magnetic bearing 3 produces electromagnetic force, make rotating shaft 2 upwards stress, now the inner ring of matched bearings 7 is compressed by being positioned at the step surface below matched bearings 7 in rotating shaft 2, remain powered on, record dial gauge 19 reading now, be designated as A (unit: mm)；
(4), calculate matched bearings 7 end-play, be given as follows:
The end-play of matched bearings=| A |-(L-D) (unit: mm)；
(5), power-off, and dismantle matched bearings 7.
The above is only the preferred embodiment of the present invention, it is noted that for those skilled in the art, can also make some improvement under the premise without departing from the principles of the invention, and these improvement also should be regarded as protection scope of the present invention.
Claims (9)
1. the device measuring matched bearings end-play, it is characterised in that: include base (1), be installed on base (1)
In center rotating shaft (2), be installed in base (1) and be sheathed on the lifting force magnetic axis that rotating shaft (2) is peripheral
Hold (3) and lower thrust magnetic bearing (4), be sheathed on rotating shaft (2) peripheral and by lifting force magnetic bearing (3) and under push away
The thrust bearing bracing ring (5) that power magnetic bearing (4) separates, the upper end of described rotating shaft (2) extends beyond base (1)
Upper surface outside, the upper end in described rotating shaft (2) is provided with matched bearings (7), at described lifting force magnetic bearing
(3) be arranged above one is sheathed on the support of bearing (8) that rotating shaft (2) is peripheral, on the described support of bearing (8)
It is provided with one and matched bearings (7) is installed on bearing a set of cups (10) therein, the outward flange of the described support of bearing (8)
It is close to the top of the sidewall of base (1), is separately installed with double threaded screw (15) in the both sides of the described support of bearing (8)
With screw rod (16), the upper position corresponding with double threaded screw (15) and screw rod (16) of described base (1) is formed with spiral shell
Hole, the upper surface of described rotating shaft (2) is provided with shaft end ring (12), shaft end ring (12) is locked in
The axle head screw (13) of rotating shaft (2) upper surface and be sheathed on shaft end ring (12) peripheral and be positioned at matched bearings
(7) bearing gland (14) of top, is mounted with gauge stand (17) between described double threaded screw (15) and screw rod (16),
Being mounted with dial gauge (19) on described gauge stand (17), the gauge outfit of described dial gauge (19) is placed in axle before measuring
On end screw (13) upper surface.
2. the device measuring matched bearings end-play as claimed in claim 1, it is characterised in that: prop up at described bearing
It is positioned at the position in bearing holder (housing, cover) cup (10) outside on frame (8) to be formed with one and run through the reserved of the support of bearing (8) upper and lower surface
Hole, is equipped with two electric current lines in described preformed hole, and one is the first electric current line, and another root is the second electric current line.
3. the device measuring matched bearings end-play as claimed in claim 2, it is characterised in that: in described lifting force
Magnetic bearing (3) and the upper position the most corresponding mutually with the preformed hole on the support of bearing (8) of thrust bearing bracing ring (5)
It is respectively formed with a through hole.
4. the device measuring matched bearings end-play as claimed in claim 3, it is characterised in that: described first electric current
One end of line is connected on lifting force magnetic bearing (3), and the other end is connected to external power supply, the one of described second electric current line
End sequentially passes through the preformed hole on the support of bearing (8), the through hole on lifting force magnetic bearing (3) and thrust bearing bracing ring
(5) being connected to after the through hole on lower thrust magnetic bearing (4), the other end is connected to external power supply.
5. the device measuring matched bearings end-play as claimed in claim 4, it is characterised in that: described shaft end ring
(12) external arc diameter is more than the inner ring internal diameter of matched bearings (7), and is less than the inner ring external diameter of matched bearings (7).
6. the device measuring matched bearings end-play as claimed in claim 5, it is characterised in that: described bearing gland
(14) being positioned at the top of bearing a set of cups (10), described bearing gland (14) is the plate body shape being provided with center hole, institute
State the diameter inner ring external diameter more than matched bearings (7) of bearing gland (14) center hole, and less than matched bearings (7)
Outer ring internal diameter.
7. the device measuring matched bearings end-play as claimed in claim 6, it is characterised in that: at described double end spiral shell
The position being positioned at gauge stand (17) top on bar (15) is provided with nut (20).
8. the device measuring matched bearings end-play as described in any one in claim 1-7, it is characterised in that:
The device of described measurement matched bearings end-play also includes base (1), lifting force magnetic bearing (3), lower thrust magnetic
Bearing (4) and thrust bearing bracing ring (5) position alignment pin (6) fixed together.
9. the measuring method of the device of a measurement matched bearings end-play as claimed in claim 1, it is characterised in that:
Comprise the steps
(1), install matched bearings (7) front, measure matched bearings (7) be superimposed on thickness together, be designated as Lmm,
Measure rotating shaft (2) upper end the length dimension being used for installing the position of matched bearings (7) be Dmm, wherein D=L+0.3～
0.5；
(2), by the second electric current line being energized to lower thrust magnetic bearing (4), lower thrust magnetic bearing (4) produces electromagnetic force,
Making rotating shaft (2) to lower stress, now the inner ring of matched bearings (7) is compressed by the lower surface of shaft end ring (12), protects
Hold energising, the gauge outfit of dial gauge (19) is compressed the upper surface of axle head screw (13), and by the finger of dial gauge (19)
Pin returns to zero；
(3), to the power-off of lower thrust magnetic bearing (4), it is energized to again by the first electric current line lifting force magnetic bearing (3),
Lifting force magnetic bearing (3) produces electromagnetic force, makes rotating shaft (2) upwards stress, now the inner ring quilt of matched bearings (7)
The step surface being positioned at matched bearings (7) lower section in rotating shaft (2) compresses, and remains powered on, and record dial gauge (19) is now
Reading, be designated as Amm；
(4), calculate matched bearings (7) end-play, be given as follows:
The end-play of matched bearings=| A |-(L-D)；
(5), power-off, and dismantle matched bearings (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410431960.3A CN104154845B (en) | 2014-08-27 | 2014-08-27 | A kind of device measuring matched bearings end-play and measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410431960.3A CN104154845B (en) | 2014-08-27 | 2014-08-27 | A kind of device measuring matched bearings end-play and measuring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104154845A CN104154845A (en) | 2014-11-19 |
| CN104154845B true CN104154845B (en) | 2016-09-14 |
Family
ID=51880411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410431960.3A Active CN104154845B (en) | 2014-08-27 | 2014-08-27 | A kind of device measuring matched bearings end-play and measuring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104154845B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106595436A (en) * | 2017-01-24 | 2017-04-26 | 中国航发中传机械有限公司 | Bearing clearance detection device in speed reducer combined casing |
| CN110285744B (en) * | 2019-08-07 | 2021-05-28 | 重庆齿轮箱有限责任公司 | Device and method for measuring axial clearance of gear shifting gear bearing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101187553A (en) * | 2007-11-30 | 2008-05-28 | 洛阳轴研科技股份有限公司 | Large-scale precision bearing axial clearance multifunctional automatic measuring instrument |
| CN201187982Y (en) * | 2008-03-28 | 2009-01-28 | 重庆长江轴承股份有限公司 | Biserial contact ball bearing and axial play detector for biserial conical bearing |
| CN201615742U (en) * | 2010-03-01 | 2010-10-27 | 洛阳轴研科技股份有限公司 | Measurer for measuring axial clearances of joint bearings |
| CN204064190U (en) * | 2014-08-27 | 2014-12-31 | 南京磁谷科技有限公司 | A kind of device measuring matched bearings end-play |
-
2014
- 2014-08-27 CN CN201410431960.3A patent/CN104154845B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101187553A (en) * | 2007-11-30 | 2008-05-28 | 洛阳轴研科技股份有限公司 | Large-scale precision bearing axial clearance multifunctional automatic measuring instrument |
| CN201187982Y (en) * | 2008-03-28 | 2009-01-28 | 重庆长江轴承股份有限公司 | Biserial contact ball bearing and axial play detector for biserial conical bearing |
| CN201615742U (en) * | 2010-03-01 | 2010-10-27 | 洛阳轴研科技股份有限公司 | Measurer for measuring axial clearances of joint bearings |
| CN204064190U (en) * | 2014-08-27 | 2014-12-31 | 南京磁谷科技有限公司 | A kind of device measuring matched bearings end-play |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104154845A (en) | 2014-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101487751B (en) | Measuring apparatus for frictional moment of bearing under different axial loads and rotation speeds | |
| CN103162596B (en) | Bearing axial clearance detection device and detection method | |
| CN201364215Y (en) | Friction moment measuring device of bearing under different axial loads and rotating speed | |
| CN204064190U (en) | A kind of device measuring matched bearings end-play | |
| CN102866006A (en) | Strong-generality comprehensive experiment table for testing dynamic and static properties of spindle system | |
| CN104154845B (en) | A kind of device measuring matched bearings end-play and measuring method | |
| CN106644480A (en) | Test bed for researching lubricating property of tilting-pad bearing film | |
| CN202470972U (en) | Axial clearance detector for double-row bearing | |
| CN109059717A (en) | A kind of radial hole location tolerance detection device of elevator traction machine braked wheel | |
| CN105180786A (en) | Elevator traction machine brake wheel hop detection tool | |
| CN203132490U (en) | Composite test tool for coaxiality of cylinder body crankshaft hole and oil sealing rack hole and cycle run-out | |
| CN105510017B (en) | Taper hole type bearing sealed ring pressure-bearing test device | |
| CN205940348U (en) | Support lateral runout examines utensil | |
| CN202470990U (en) | Device for detecting concentricity between rotor shaft and rotor inner hole of external rotor motor | |
| CN205156822U (en) | Bearing clearance testing arrangement | |
| CN104654988A (en) | Method for detecting coaxiality of bearing holes in compressor body | |
| CN203572627U (en) | Vibration device used for determining faults of antifriction bearing | |
| CN2876755Y (en) | Bearing dynamic performance tester | |
| CN207853687U (en) | Electric vehicle motor quickly tests the speed tooling | |
| CN104155032B (en) | The measurement mechanism of automobile door lock pull wire pulling force | |
| CN104897342A (en) | Air bearing device for measurement of dynamic balance of turbine shaft parts of automobile superchargers | |
| CN103267641B (en) | Temperature-rise test device and method for sealed double-row angular contact ball bearings | |
| CN201622172U (en) | Detector used for detecting rotation or separation of outer ring of spherical plain bearing in assorted casing | |
| CN202903089U (en) | Tapered roller bearing clearance measuring device | |
| CN203550898U (en) | Air-cylinder coaxiality measuring instrument |
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 | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 211102 No.99, Jinxin Middle Road, Jiangning District, Nanjing City, Jiangsu Province Patentee after: Nanjing Cigu Technology Co., Ltd Address before: Nine No. 211102 Bamboo Road, Jiangning Development Zone, Nanjing, Jiangsu, 100 Patentee before: NANJING CIGU LIMITED Corp. |