CN110345102B - Fan transmission shaft of hollow split type structure - Google Patents
Fan transmission shaft of hollow split type structure Download PDFInfo
- Publication number
- CN110345102B CN110345102B CN201910646200.7A CN201910646200A CN110345102B CN 110345102 B CN110345102 B CN 110345102B CN 201910646200 A CN201910646200 A CN 201910646200A CN 110345102 B CN110345102 B CN 110345102B
- Authority
- CN
- China
- Prior art keywords
- shaft
- carbon fiber
- fiber hollow
- hollow shaft
- pin holes
- 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.)
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 38
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 87
- 239000004917 carbon fiber Substances 0.000 claims abstract description 87
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 87
- 239000003822 epoxy resin Substances 0.000 claims abstract description 7
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 19
- 238000010276 construction Methods 0.000 claims 2
- 230000037431 insertion Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 8
- 239000000835 fiber Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 241000886569 Cyprogenia stegaria Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013081 microcrystal Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/053—Shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/601—Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
Abstract
The utility model provides a fan transmission shaft of hollow split type structure, including the carbon fiber hollow shaft, shaft seal and axle sleeve are installed respectively at the both ends of carbon fiber hollow shaft, two circles of pinholes have been seted up respectively to the one end of shaft seal in the hole of carbon fiber hollow shaft, every circle of pinhole is a plurality of radial through-holes of evenly spaced apart distribution along the circumference of carbon fiber hollow shaft, two circles of pinholes have been seted up on the axle sleeve, the pinhole of axle sleeve aligns with two circles of pinholes of the same one end of carbon fiber hollow shaft one by one respectively, one circle of pinhole has been seted up on the one end of shaft seal insertion in the carbon fiber hollow shaft, the pinhole of shaft seal aligns with one circle of pinhole that the carbon fiber hollow shaft is close to the axle head one by one; locating pins are inserted into all the pin holes which are mutually aligned on the carbon fiber hollow shaft, the shaft sleeve and the shaft seal; epoxy resin is filled between the carbon fiber hollow shaft and the outer wall of the shaft seal and the inner wall of the shaft sleeve, and is used for solidifying and bonding the carbon fiber hollow shaft, the shaft seal and the shaft sleeve into a whole.
Description
Technical Field
The invention relates to the field of fan transmission shafts, in particular to a hollow split-type fan transmission shaft.
Background
The fan transmission shaft is an important component part of the fan, is generally erected in the fan shell through a pair of bearings, is sleeved with a fan impeller and is connected with the motor through transmission components such as a motor wheel disc and the like, so that the impeller is driven to rotate by the power of the motor. In order to meet the use requirement of the fan, the performance of the fan is improved, so that the fan transmission shaft needs to be light in weight to lighten the running load of the fan and increase wind power, and the fan transmission shaft also needs to have stronger anti-seismic performance to reduce noise in the running process of the fan. The existing fan transmission shaft is usually made of metal, is large in weight, and can be a hollow shaft for reducing weight, but the hollow shaft made of metal is insufficient in anti-seismic performance, noise is large in operation, and the hollow shaft made of metal is easy to corrode and cannot be used in a severe environment.
The carbon fiber material is a novel fiber material which takes resin as a matrix, carbon fiber filaments as a reinforcing material and contains high-strength and high-modulus fibers with carbon content of more than 90 percent, and is a microcrystalline graphite material obtained by stacking organic fibers such as flaky graphite microcrystals along the axial direction of the fibers and performing carbonization and graphitization treatment. The carbon fiber material has lighter weight than metal aluminum, higher strength than steel, corrosion resistance and vibration resistance, and soft processability of textile fibers, and is an important material in national defense and military industry and civil use. The hollow fan transmission shaft made of the carbon fiber material has the weight which is greatly lower than that of the metal hollow shaft with the same size, the strength of the hollow fan transmission shaft is higher than that of the metal hollow shaft, and the shock resistance of the hollow carbon fiber shaft is higher than that of the metal hollow shaft due to the strong shock resistance of the carbon fiber material, so that the defect of the hollow fan transmission shaft made of the metal material can be overcome.
However, components such as an impeller, a bearing, a motor wheel disc and the like need to be mounted on the fan transmission shaft, the components are all made of metal, the bearing made of metal needs to be sleeved on the shaft made of metal, namely, the matching between the bearing and related parts needs to be contact between metals, and the rest of the impeller, the motor wheel disc and the like also need to be in contact with each other to better play a role, so that the hollow fan transmission shaft made of carbon fiber is difficult to directly use. In the prior art, although a structure that metal half shaft connectors are additionally arranged at two ends of a hollow fan transmission shaft made of carbon fiber materials is proposed, the connection strength between the half shaft connectors and a carbon fiber hollow shaft body is insufficient, and the precision of the half shaft connectors and the carbon fiber hollow shaft body during synchronous rotation is also poor, so that the service performance and the service life of the fan transmission shaft are reduced.
Disclosure of Invention
In order to solve the problems of the prior fan transmission shaft, the invention provides a fan transmission shaft with a hollow split type structure.
The technical scheme adopted by the invention for solving the technical problems is as follows: the fan transmission shaft with the hollow split type structure comprises a carbon fiber hollow shaft, wherein shaft seals made of metal are respectively arranged at two ends of the carbon fiber hollow shaft, the shaft seals are of hollow columnar structures, one ends of the shaft seals are matched with the inner diameter of the carbon fiber hollow shaft and are inserted into an inner hole of the carbon fiber hollow shaft, and shaft shoulders in the middle of the shaft seals are pressed on the end faces of the carbon fiber hollow shaft; the two ends of the carbon fiber hollow shaft are respectively sleeved with a shaft sleeve made of metal, and the shaft sleeves extend from the corresponding outer circumference of the shaft seal inserted at the end part of the carbon fiber hollow shaft to the middle part of the carbon fiber hollow shaft; two circles of pin holes are respectively formed in two ends of the carbon fiber hollow shaft, each circle of pin holes are a plurality of radial through holes uniformly distributed at intervals along the circumferential direction of the carbon fiber hollow shaft, two circles of pin holes are formed in the shaft sleeve, the pin holes of the shaft sleeve are respectively aligned with the two circles of pin holes at the same end of the carbon fiber hollow shaft one by one, a circle of pin holes are formed in one end of the carbon fiber hollow shaft in an inserted manner, and the pin holes of the shaft seal are aligned with the circle of pin holes of the carbon fiber hollow shaft close to the shaft end one by one; locating pins are inserted into all the mutually aligned pin holes on the carbon fiber hollow shaft, the shaft sleeve and the shaft seal, and the length of each locating pin is not smaller than the total length of a plurality of mutually aligned pin holes inserted into each locating pin; epoxy resin is filled between the inner wall of the carbon fiber hollow shaft and the outer wall of the attached shaft seal and between the outer wall of the carbon fiber hollow shaft and the inner wall of the attached shaft sleeve, and is used for integrally curing and bonding the carbon fiber hollow shaft, the shaft seal and the shaft sleeve.
Preferably, the diameters of all the pin holes are equal, and the number of the pin holes in each circle is four.
Preferably, the shaft seal is provided with threads on the outer circumference far away from the carbon fiber hollow shaft.
Preferably, the shaft seal is provided with a key groove on the outer circumference far away from the carbon fiber hollow shaft.
Preferably, threads and key grooves are formed in the outer circumference of the shaft sleeve.
According to the technical scheme, the invention has the beneficial effects that:
the hollow split-type fan transmission shaft provided by the invention adopts the carbon fiber hollow shaft as the main body of the fan transmission shaft, so that the weight of the fan transmission shaft is lighter than that of the traditional metal transmission shaft, and the anti-seismic performance and the corrosion resistance of the fan transmission shaft are stronger.
The bearing on the fan transmission shaft can be sleeved on the outer circumference of the shaft sleeve, and transmission components such as the fan impeller and the motor wheel disc can be connected with the shaft sleeve, so that the impeller, the bearing, the motor wheel disc and other components can be connected with the fan transmission shaft through contact fit among metals on the premise that the main body of the fan transmission shaft is made of carbon fiber materials, the bearing and other components are prevented from being directly contacted with the transmission shaft made of carbon fiber materials to affect the use, and the performance of the components is guaranteed to be fully exerted.
The invention relates to a fan transmission shaft, which is characterized in that epoxy resin is filled between a carbon fiber hollow shaft and a shaft seal and a shaft sleeve, the carbon fiber hollow shaft, the shaft seal and the shaft sleeve can be firmly bonded into a whole through the curing bonding effect of the epoxy resin, the connection strength is improved, a plurality of pin holes which are aligned one by one are formed between the carbon fiber hollow shaft and the shaft seal and the shaft sleeve, positioning pins are inserted into the pin holes which are aligned in each group, the carbon fiber hollow shaft, the shaft seal and the shaft sleeve can be tightly and accurately positioned, torque can be transmitted through the positioning pins, and the positioning pins can be matched with the epoxy resin to drive the carbon fiber hollow shaft, the shaft seal and the shaft sleeve to synchronously rotate.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic cross-sectional view of fig. 1.
The marks in the figure: 1. 2, shaft seal, 3, shaft sleeve, 4, pin hole, 5, screw thread, 6 and key slot.
Detailed Description
Referring to the drawings, the specific embodiments are as follows:
the utility model provides a fan transmission shaft of hollow split type structure, including a carbon fiber hollow shaft 1, the bearing seal 2 of a metal material is installed respectively at the both ends of carbon fiber hollow shaft 1, bearing seal 2 is hollow columnar structure, the one end of bearing seal 2 and the internal diameter phase-match of carbon fiber hollow shaft 1 are inserted and are established in the hole of carbon fiber hollow shaft 1, the shoulder at bearing seal 2 middle part is pressed and are established on the terminal surface of carbon fiber hollow shaft 1, bearing seal 2 is kept away from all offered keyway 6 on the outer circumference of carbon fiber hollow shaft 1, still offered screw thread 5 on the outer circumference of one of them bearing seal 2, make fan impeller can cooperate and install on bearing seal 2 with the screw thread through keyway 6 and screw thread 5, then be connected with transmission parts such as motor rim plate on the bearing seal 2 of the other end through keyway 6; the two ends of the carbon fiber hollow shaft 1 are respectively sleeved with a shaft sleeve 3 made of metal, the shaft sleeve 3 extends from the corresponding outer circumference of the position where the shaft seal 2 is inserted into the end part of the carbon fiber hollow shaft 1 to the middle part of the carbon fiber hollow shaft 1, threads 5 and key grooves 6 are formed in the outer circumference of the shaft sleeve 3, a pair of main bearings of a fan transmission shaft are respectively arranged on the outer circumferences of the two shaft sleeves 3, the inner diameters of the bearings are smaller than the maximum outer diameters of the shaft sleeves 3, the two bearings are respectively sleeved in from the two ends of the fan transmission shaft to the middle when being arranged, the end surfaces of the bearings are propped against the maximum outer circle part of the shaft sleeve 3, a boss formed by the maximum outer circle of the shaft sleeve 3 limits the displacement of the bearing towards the middle part of the fan transmission shaft, one side of the bearing away from the middle part of the fan transmission shaft is positioned through the key grooves 6, meanwhile, an anti-loosening ring is screwed at the adjacent threads 5 on the shaft sleeve 3, and the boss formed by the anti-loosening ring and the maximum outer circle of the shaft sleeve 3 is matched to prop up the bearing, so that the bearing is fixed on the shaft sleeve 3.
Two circles of pin holes 4 are respectively formed in two ends of the carbon fiber hollow shaft 1, each circle of pin holes 4 are a plurality of radial through holes uniformly distributed at intervals along the circumferential direction of the carbon fiber hollow shaft 1, two circles of pin holes 4 are formed in the shaft sleeve 3, the pin holes 4 of the shaft sleeve 3 are aligned with the two circles of pin holes 4 at the same end of the carbon fiber hollow shaft 1 one by one, a circle of pin holes 4 are formed in one end of the carbon fiber hollow shaft 1, inserted into the shaft seal 2, the pin holes 4 of the shaft seal 2 are aligned with the circle of pin holes 4 of the carbon fiber hollow shaft 1, which are close to the shaft ends one by one, the number of the pin holes 4 of each circle is four, and the diameters of all the pin holes are equal; positioning pins are inserted into all the mutually aligned pin holes 4 on the carbon fiber hollow shaft 1, the shaft sleeve 3 and the shaft seal 2, and the length of each positioning pin is not smaller than the total length of a plurality of mutually aligned pin holes 4 inserted into each positioning pin; epoxy resin is filled between the inner wall of the carbon fiber hollow shaft 1 and the outer wall of the attached shaft seal 2 and between the outer wall of the carbon fiber hollow shaft 1 and the inner wall of the attached shaft sleeve 3, and is used for solidifying and bonding the carbon fiber hollow shaft 1, the shaft seal 2 and the shaft sleeve 3 into a whole, so that the carbon fiber hollow shaft 1, the shaft seal 2 and the shaft sleeve 3 can synchronously and accurately rotate.
Claims (3)
1. A fan transmission shaft of hollow split type structure, its characterized in that: the carbon fiber hollow shaft comprises a carbon fiber hollow shaft (1), wherein shaft seals (2) made of metal are respectively arranged at two ends of the carbon fiber hollow shaft (1), the shaft seals (2) are of hollow columnar structures, one ends of the shaft seals (2) are matched with the inner diameter of the carbon fiber hollow shaft (1) and are inserted into an inner hole of the carbon fiber hollow shaft (1), and shaft shoulders in the middle of the shaft seals (2) are pressed on the end faces of the carbon fiber hollow shaft (1); the two ends of the carbon fiber hollow shaft (1) are respectively sleeved with a shaft sleeve (3) made of metal, and the shaft sleeves (3) extend from the corresponding outer circumference of the position of the carbon fiber hollow shaft (1) where the shaft seal (2) is inserted into the end part of the carbon fiber hollow shaft to the middle part of the carbon fiber hollow shaft (1); two circles of pin holes (4) are respectively formed in two ends of the carbon fiber hollow shaft (1), each circle of pin holes (4) are a plurality of radial through holes uniformly distributed at intervals along the circumferential direction of the carbon fiber hollow shaft (1), two circles of pin holes (4) are formed in the shaft sleeve (3), the pin holes (4) of the shaft sleeve (3) are aligned with the two circles of pin holes (4) at the same end of the carbon fiber hollow shaft (1) one by one respectively, a circle of pin holes (4) are formed in one end of the carbon fiber hollow shaft (1) in an inserted mode, and the pin holes (4) of the shaft seal (2) are aligned with the circle of pin holes (4) of the carbon fiber hollow shaft (1) close to the shaft end one by one; positioning pins are inserted into all pin holes (4) which are aligned with each other on the carbon fiber hollow shaft (1), the shaft sleeve (3) and the shaft seal (2), and the length of each positioning pin is not smaller than the total length of a plurality of pairs Ji Xiaokong (4) inserted by each positioning pin; epoxy resin is filled between the inner wall of the carbon fiber hollow shaft (1) and the outer wall of the attached shaft seal (2) and between the outer wall of the carbon fiber hollow shaft (1) and the inner wall of the attached shaft sleeve (3) and is used for solidifying and bonding the carbon fiber hollow shaft (1), the shaft seal (2) and the shaft sleeve (3) into a whole;
the diameters of all the pin holes (4) are equal, and the number of the pin holes (4) in each circle is four;
the outer circumference of the shaft sleeve (3) is provided with threads (5) and key grooves (6).
2. The fan drive shaft of a hollow split construction according to claim 1, wherein: the shaft seal (2) is far away from the outer circumference of the carbon fiber hollow shaft (1) and is provided with threads (5).
3. The fan drive shaft of a hollow split construction according to claim 1, wherein: and a key groove (6) is formed in the outer circumference of the shaft seal (2) far away from the carbon fiber hollow shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910646200.7A CN110345102B (en) | 2019-07-17 | 2019-07-17 | Fan transmission shaft of hollow split type structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910646200.7A CN110345102B (en) | 2019-07-17 | 2019-07-17 | Fan transmission shaft of hollow split type structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110345102A CN110345102A (en) | 2019-10-18 |
| CN110345102B true CN110345102B (en) | 2024-03-12 |
Family
ID=68175632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910646200.7A Active CN110345102B (en) | 2019-07-17 | 2019-07-17 | Fan transmission shaft of hollow split type structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110345102B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233761A (en) * | 2022-01-24 | 2022-03-25 | 沈阳工业大学 | Connecting device of carbon fiber composite transmission shaft |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5320579A (en) * | 1990-06-23 | 1994-06-14 | Gkn Automotive Ag | Energy absorbing driveshaft connections |
| EP2154386A1 (en) * | 2008-08-11 | 2010-02-17 | Siemens Aktiengesellschaft | Pillow block with a split magnetic radial bearing and a split touch-down bearing in a common split bearing housing |
| DE102011085962A1 (en) * | 2011-11-08 | 2013-05-23 | Leichtbau-Zentrum Sachsen Gmbh | Profile shaft for use with internal profile made of fiber composite material in drive shaft of aircraft and motor vehicle, has area that forms profile shell, where profile shell has profiled cross-section with tooth bases and tooth points |
| CN107031068A (en) * | 2017-04-28 | 2017-08-11 | 武汉理工大学 | A kind of equation motorcycle race carbon fiber semiaxis for carrying high pulling torque and preparation method thereof |
| CN207906116U (en) * | 2018-01-22 | 2018-09-25 | 石家庄金士顿轴承科技有限公司 | Bilobed wheel pull rod permanent magnet rotor structure for air suspension centrifugal blower |
| CN210265247U (en) * | 2019-07-17 | 2020-04-07 | 洛阳北玻台信风机技术有限责任公司 | Fan transmission shaft of hollow split type structure |
-
2019
- 2019-07-17 CN CN201910646200.7A patent/CN110345102B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5320579A (en) * | 1990-06-23 | 1994-06-14 | Gkn Automotive Ag | Energy absorbing driveshaft connections |
| EP2154386A1 (en) * | 2008-08-11 | 2010-02-17 | Siemens Aktiengesellschaft | Pillow block with a split magnetic radial bearing and a split touch-down bearing in a common split bearing housing |
| DE102011085962A1 (en) * | 2011-11-08 | 2013-05-23 | Leichtbau-Zentrum Sachsen Gmbh | Profile shaft for use with internal profile made of fiber composite material in drive shaft of aircraft and motor vehicle, has area that forms profile shell, where profile shell has profiled cross-section with tooth bases and tooth points |
| CN107031068A (en) * | 2017-04-28 | 2017-08-11 | 武汉理工大学 | A kind of equation motorcycle race carbon fiber semiaxis for carrying high pulling torque and preparation method thereof |
| CN207906116U (en) * | 2018-01-22 | 2018-09-25 | 石家庄金士顿轴承科技有限公司 | Bilobed wheel pull rod permanent magnet rotor structure for air suspension centrifugal blower |
| CN210265247U (en) * | 2019-07-17 | 2020-04-07 | 洛阳北玻台信风机技术有限责任公司 | Fan transmission shaft of hollow split type structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110345102A (en) | 2019-10-18 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 471000 Luoyang, Henan, Luoyang, China (Henan) free trade test zone, Luoyang section, Hi-tech Development Zone, Riverside Road No. 20 Applicant after: Luoyang Beibo sanyuanliu Fan Technology Co.,Ltd. Address before: 471000 Luoyang, Henan, Luoyang, China (Henan) free trade test zone, Luoyang section, Hi-tech Development Zone, Riverside Road No. 20 Applicant before: LUOYANG NORTHGLASS TAIXIN FAN TECHNOLOGY Co.,Ltd. |
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