CN106005446A - Flexible-connection power take-off of unmanned helicopter - Google Patents
Flexible-connection power take-off of unmanned helicopter Download PDFInfo
- Publication number
- CN106005446A CN106005446A CN201610466817.7A CN201610466817A CN106005446A CN 106005446 A CN106005446 A CN 106005446A CN 201610466817 A CN201610466817 A CN 201610466817A CN 106005446 A CN106005446 A CN 106005446A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 40
- 230000008878 coupling Effects 0.000 claims description 19
- 238000010168 coupling process Methods 0.000 claims description 19
- 238000005859 coupling reaction Methods 0.000 claims description 19
- 238000009434 installation Methods 0.000 claims description 19
- 230000008859 change Effects 0.000 claims description 15
- 238000013021 overheating Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D35/00—Transmitting power from power plants to propellers or rotors; Arrangements of transmissions
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transmission Devices (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The invention discloses a flexible-connection power take-off of an unmanned helicopter. The power take-off comprises an engine spindle, first rubber column bolts, a spindle output shaft, a clutch shaft, a clutch, a flywheel, second rubber column bolts, a transmission input shaft, a transmission, an output shaft and a belt pulley, wherein the engine spindle and one end of the spindle output shaft are connected through the first rubber column bolts; the other end of the spindle output shaft and one end of the clutch shaft are connected through a sliding sleeve; the clutch shaft is sleeved with a clutch and the flywheel sequentially; the other end of the clutch shaft is connected with the transmission input shaft through the second rubber column bolts. The rubber column bolts are customized by improving rigid bolt connection, besides, structures of the output shaft and the transmission input shaft are redesigned, the problem of difficulty in keeping concentricity during mounting is solved, the mounting can be simple and convenient, vibration is prevented from being conducted to a transmission, overheating of the belt pulley is prevented, and the reliability of a power transmission system of the unmanned helicopter can be improved.
Description
[technical field]
The present invention relates to the technical field of output machine tool device, especially with the technical field of the depopulated helicopter PTO being flexible coupling.
[background technology]
Mini Tele-Copter drive system with aviation piston engine as power set is typically made up of electromotor, main reducing gear, main rotor shaft, tail transmission shaft, tail reducer, tail-rotor axle etc..Wherein, power is passed to main reducing gear by the way of gear drive or V belt translation by electromotor.PTO, it is called again power takeoff, be by the power of electromotor to outside equipment output device, incision power can be carried in safety, frequent area in electromotor operates, by the power of electromotor rationally, be efficiently transferred to use position, moment of torsion is transmitted in the effect of the power output shaft in power output system exactly.
A complicated link present in power transmission always various machinerys, it is also a complicated process that unmanned plane helicopter is delivered power to main rotor by electromotor, for conventional power output structure of engine, relying primarily on the output of engine flywheel end, front end can be only done the output of fraction power.Due to the objective feature of electromotor, must there is the existence of clutch in terms of power transmission, but whether be by clutch transmission power or being transferred directly to change speed gear box all exists the connectivity problem of axle.It is operationally to run up so the concentricity that is connected with axle of axle is most important due to engine spindle.Put-put axle is connected by centre bore fastening the method kept with tapering at present, put-put is smaller due to output moment of torsion, so having only on centre bore fixing the most permissible with a bolt, by adjusting the degree of tightness of bolt during assembling, amesdial is relied on to assemble, to ensure concentricity.
But it is as the maximization of current unmanned plane helicopter, twin-tub, the utilization of four cylinder engine, such fixing means is the most impracticable, the rotating speed of depopulated helicopter electromotor is high, if the connection of engine power output goes wrong, axiality is not guaranteed, easily occur that vibration is big, there is deviation in power output procedure, simultaneously, vibrations when bolt fastening makes electromotor work have been transmitted on transmission input shaft, by gears at different levels, vibrations are transmitted in change speed gear box again, and cause resonance, this makes all parts in power output instability and change speed gear box there will be metal fatigue in a short period of time, cause aviation accident.
The power output of electromotor requires increasing, this overlaps front-end architecture owing to starting tools for bolts ' pretension so that the maximum static friction force produced between belt pulley and bent axle cannot meet the requirement of high-power output, prolongation along with the working time, its leading portion belt pulley occurs in that high temperataure phenomena, so that the belt of transmission power is overheated, occur in that other " burning belt " phenomenon, thus have impact on the working life of belt.
[summary of the invention]
The purpose of the present invention solves the problems of the prior art exactly, the depopulated helicopter PTO that a kind of employing is flexible coupling is proposed, simple installation can be made, ensure higher axiality, vibrations are avoided to be transmitted to change speed gear box, and prevent belt pulley overheated so that depopulated helicopter dynamic transfer system reliability improves.
For achieving the above object, the present invention proposes the depopulated helicopter PTO that a kind of employing is flexible coupling, including engine spindle, first rubber column bolt, main shaft output shaft, clutch shaft, clutch, flywheel, second rubber column bolt, transmission input shaft, change speed gear box, output shaft and belt pulley, described engine spindle is connected by the first rubber column bolt with one end of main shaft output shaft, the other end of main shaft output shaft is connected by engaging sleeve with one end of clutch shaft, clutch and flywheel it is set with successively on clutch shaft, the other end of clutch shaft is connected by the second rubber column bolt with transmission input shaft；One end of described engine spindle has major thread hole, and main shaft output shaft one end has the first bolt hole, and one end of clutch shaft has minor thread hole, and one end of transmission input shaft has the second bolt hole.
As preferably, the quantity in described major thread hole is individual, and major thread hole coordinates installation with the first rubber column bolt；The quantity of the first bolt hole is individual, and the rubber column of the first bolt hole and the first rubber column bolt coordinates to be installed.
As preferably, the quantity in described minor thread hole is individual, and minor thread hole coordinates installation with the second rubber column bolt；The quantity of the second bolt hole is individual, and the rubber column of the second bolt hole and the second rubber column bolt coordinates to be installed.
As preferably, described clutch shaft being set with clutch outer member, clutch and flywheel and is all arranged in clutch outer member, clutch and the second bearing are connected.
As preferably, being provided with clutch shaft bearing outside described output shaft, clutch shaft bearing supports main shaft output shaft shell, and main shaft output shaft shell and clutch outer member are bolted installation.
As preferably, described engine spindle center has hole I, and main shaft output shaft center has in hole II, hole I and hole II and is provided with the first rubber column；Clutch shaft center has hole III, and transmission input shaft center has in hole IV, hole III and hole IV and is provided with the second rubber column.
As preferably, described main shaft output shaft is provided with spline, and engaging sleeve is inner gear structure, and engaging sleeve is sleeved on spline, can slide axially on main shaft output shaft.
As preferably, described clutch shaft being set with gear, the external tooth of gear engages with the internal tooth of engaging sleeve, and main shaft output shaft rotates together with clutch shaft, it is achieved transmission power, realizes cutting off power during disengagement.
As preferably, described output shaft is integrated with transmission input shaft and is connected, and output shaft is cased with axle sleeve, and axle sleeve and change speed gear box are bolted installation.
As preferably, one end of described output shaft is provided with belt pulley, and the end face of belt pulley has louvre, and louvre is along the end face circle distribution of belt pulley；Described belt pulley can be to select the belt wheel transmission of any one forms such as V band, Timing Belt, flat rubber belting.
Beneficial effects of the present invention: the present invention connects entirely different with original PTO connected mode, original PTO relies on bolt to be rigidly connected, and installation and debugging bother, and vibrations are easily transferred in change speed gear box, make power output instability, be easily damaged and cause the accident.Present invention improves over rigidity bolt to connect, customized rubber column bolt, additionally redesigned the structure of main shaft output shaft and transmission input shaft, held the hole for connecting rubber column successfully.Rubber column bolt elasticity connects engine spindle and main shaft output shaft, clutch shaft and transmission input shaft, the problem keeping axiality difficulty when solving installation, ensure the main shaft of electromotor, clutch and the axiality of splined shaft, ensure that the ride comfort that engine power exports, reduce damage clutch, the probability of main shaft in power output procedure, output shaft bearing is bath lubrication, bigger power can be transmitted, louvre on belt pulley is possible to prevent the too high phenomenon burning out belt of belt pulley temperature occur, extends the working life of belt；Simple installation, it is possible to reduce vibration, it is ensured that engine power output steady, it is to avoid vibrations be transmitted to change speed gear box so that depopulated helicopter dynamic transfer system reliability improve.
Inventive feature and advantage will combine accompanying drawing by embodiment and be described in detail.
[accompanying drawing explanation]
Fig. 1 is the main pseudosection of the depopulated helicopter PTO that a kind of employing of the present invention is flexible coupling；
Fig. 2 is the schematic diagram of the rubber column bolt of the depopulated helicopter PTO that a kind of employing of the present invention is flexible coupling；
Fig. 3 is the schematic diagram of the transmission input shaft of the depopulated helicopter PTO that a kind of employing of the present invention is flexible coupling；
Fig. 4 is the schematic diagram of the belt pulley louvre of the depopulated helicopter PTO that a kind of employing of the present invention is flexible coupling.
In figure: 1-engine spindle, 2-the first rubber column bolt, 3-the first rubber column, 4-main shaft output shaft shell, 5-clutch shaft bearing, 6-output shaft, 61-the first bolt hole, 62-hole II, 7-spline, 8-engaging sleeve, 9-clutch outer member, 10-clutch shaft, 101-minor thread hole, 102-hole III, 11-the second rubber column bolt, 12-change speed gear box, 13-transmission input shaft, 131-hole IV, 132-the second bolt hole, 14-the second rubber column, 15-flywheel, 16-clutch, 17-the second bearing, 18-gear, 19-hole I, 20-major thread hole, 21-axle sleeve, 22-output shaft, 23-belt pulley, 231-louvre.
[detailed description of the invention]
Refering to Fig. 1～Fig. 4, including engine spindle 1, first rubber column bolt 2, main shaft output shaft 6, clutch shaft 10, clutch 16, flywheel 15, second rubber column bolt 11, transmission input shaft 13, change speed gear box 12, output shaft 22 and belt pulley 23, described engine spindle 1 is connected by the first rubber column bolt 2 with one end of main shaft output shaft 6, the other end of main shaft output shaft 6 is connected by engaging sleeve 8 with one end of clutch shaft 10, clutch 16 and flywheel 15 it is set with successively on clutch shaft 10, the other end of clutch shaft 10 is connected by the second rubber column bolt 11 with transmission input shaft 13；One end of described engine spindle 1 has major thread hole 20, and main shaft output shaft 6 one end has the first bolt hole 61, and one end of clutch shaft 10 has minor thread hole 101, and one end of transmission input shaft 13 has the second bolt hole 132.
The quantity in described major thread hole 20 is 6, and major thread hole 20 coordinates installation with the first rubber column bolt 2；The quantity of the first bolt hole 61 is 6, and the first bolt hole 61 coordinates installation with the rubber column of the first rubber column bolt 2.The quantity in described minor thread hole 101 is 6, and minor thread hole 101 coordinates installation with the second rubber column bolt 11；The quantity of the second bolt hole 132 is 6, and the second bolt hole 132 coordinates installation with the rubber column of the second rubber column bolt 11.Being set with clutch outer member 9, clutch 16 and flywheel 15 on described clutch shaft 10 to be all arranged in clutch outer member 9, clutch 16 is connected with the second bearing 17.Being provided with clutch shaft bearing 5 outside described main shaft output shaft 6, clutch shaft bearing 5 supports main shaft output shaft shell 4, and main shaft output shaft shell 4 and clutch outer member 9 are bolted installation.Described engine spindle 1 center has hole I 19, and main shaft output shaft 6 center has in hole II 62, hole I 19 and hole II 62 and is provided with the first rubber column 3；Clutch shaft 10 center has hole III 102, and transmission input shaft 13 center has in hole IV 131, hole III 102 and hole IV 131 and is provided with the second rubber column 14.Described main shaft output shaft 6 is provided with spline 7, and engaging sleeve 8 is inner gear structure, and engaging sleeve 8 is sleeved on spline 7, can slide axially on main shaft output shaft 6.Being set with gear 18 on described clutch shaft 10, the external tooth of gear 18 engages with the internal tooth of engaging sleeve 8, and main shaft output shaft 6 rotates together with clutch shaft 10, it is achieved transmission power, realizes cutting off power during disengagement.Described output shaft 22 is integrated with transmission input shaft 13 and is connected, and output shaft 22 is cased with axle sleeve 21, and axle sleeve 21 and change speed gear box 12 are bolted installation.One end of described output shaft 22 is provided with belt pulley 23, and the end face of belt pulley 23 has louvre 231, and louvre 231 is along the end face circle distribution of belt pulley 23.Clutch end uses the mode of V belt translation, flexible arrangement, and described belt pulley 23 can be to select the belt wheel transmission of any one forms such as V band, Timing Belt, flat rubber belting.
Work process of the present invention:
The depopulated helicopter PTO that a kind of employing of the present invention is flexible coupling is in the course of the work, after engine start, bent axle flywheel driven 15 and clutch 16 rotate, power passes to change speed gear box from clutch 16, output shaft of gear-box directly drives belt pulley 23, belt pulley 23 to slow down by the way of V belt translation and imparts power to Helicopter Main rotor shaft afterwards.
Detailed process: engine spindle 1 is connected with main shaft output shaft 6 with the first rubber column 3 by 6 the first rubber column bolts 2, main shaft output shaft 6 is connected with clutch 10 axle by engaging sleeve 8, engaging sleeve 8 is inner gear structure, engaging sleeve 8 is sleeved on spline 63, can slide axially on main shaft output shaft 6.The internal tooth of engaging sleeve 8 engages with the external tooth of gear 18, and main shaft output shaft 6 rotates together with clutch shaft 10, it is achieved transmission power, realizes cutting off power during disengagement；Clutch shaft 10 is connected with transmission input shaft 13 with the second rubber column 14 by 6 the second rubber column bolts 11, and then power just exports from electromotor.
The present invention connects entirely different with original PTO connected mode, and original PTO relies on bolt to be rigidly connected, and installation and debugging bother, and vibrations are easily transferred in change speed gear box so that power output instability, is easily damaged and causes the accident.Present invention improves over rigidity bolt to connect, customized rubber column bolt 11, additionally redesigned main shaft output shaft 6 and the structure of transmission input shaft 13, held the hole for connecting rubber column successfully.Rubber column bolt 11 is elastic connects engine spindle 1 and main shaft output shaft 6, clutch shaft 10 and transmission input shaft 13, the problem keeping axiality difficulty when solving installation, ensure the main shaft of electromotor, clutch and the axiality of splined shaft, ensure that the ride comfort that engine power exports, reduce damage clutch, the probability of main shaft in power output procedure, output shaft bearing is bath lubrication, bigger power can be transmitted, louvre on belt pulley 23 is possible to prevent the too high phenomenon burning out belt of belt pulley 23 temperature occur, extends the working life of belt；Simple installation, it is possible to reduce vibration, it is ensured that engine power output steady, it is to avoid vibrations be transmitted to change speed gear box so that depopulated helicopter dynamic transfer system reliability improve.
Above-described embodiment is the description of the invention, is not limitation of the invention, any scheme after simple transformation of the present invention is belonged to protection scope of the present invention.
Claims (10)
1. the depopulated helicopter PTO that an employing is flexible coupling, it is characterised in that: include engine spindle
(1), the first rubber column bolt (2), main shaft output shaft (6), clutch shaft (10), clutch (16), fly
Wheel (15), the second rubber column bolt (11), transmission input shaft (13), change speed gear box (12), output shaft (22)
With belt pulley (23), described engine spindle (1) passes through the first rubber column with one end of main shaft output shaft (6)
Bolt (2) is connected, and the other end of main shaft output shaft (6) passes through engaging sleeve with one end of clutch shaft (10)
(8) it is connected, clutch shaft (10) is set with clutch (16) and flywheel (15), clutch shaft (10) successively
The other end and transmission input shaft (13) be connected by the second rubber column bolt (11)；Described electromotor
One end of main shaft (1) has major thread hole (20), and main shaft output shaft (6) one end has the first bolt hole (61),
One end of clutch shaft (10) has minor thread hole (101), and one end of transmission input shaft (13) has second
Bolt hole (132).
The depopulated helicopter PTO that a kind of employing the most as claimed in claim 1 is flexible coupling, its feature exists
In: the quantity of described major thread hole (20) is 6, major thread hole (20) and the first rubber column bolt (2)
Coordinate and install；The quantity of the first bolt hole (61) is 6, the first bolt hole (61) and the first rubber column spiral shell
The rubber column of bolt (2) coordinates to be installed.
The depopulated helicopter PTO that a kind of employing the most as claimed in claim 1 is flexible coupling, its feature exists
In: the quantity of described minor thread hole (101) is 6, minor thread hole (101) and the second rubber column bolt (11)
Coordinate and install；The quantity of the second bolt hole (132) is 6, the second bolt hole (132) and the second rubber column
The rubber column of bolt (11) coordinates to be installed.
The depopulated helicopter PTO that a kind of employing the most as claimed in claim 1 is flexible coupling, its feature exists
In: it is set with clutch outer member (9), clutch (16) and flywheel (15) on described clutch shaft (10) and all pacifies
Being contained in clutch outer member (9), clutch (16) is connected with the second bearing (17).
The depopulated helicopter PTO that a kind of employing the most as claimed in claim 4 is flexible coupling, its feature exists
In: being provided with clutch shaft bearing (5) outside described main shaft output shaft (6), clutch shaft bearing (5) supports has main shaft to export
Shaft housing (4), main shaft output shaft shell (4) and clutch outer member (9) are bolted installation.
The depopulated helicopter PTO that a kind of employing the most as claimed in claim 1 is flexible coupling, its feature exists
In: described engine spindle (1) center has hole I (19), and main shaft output shaft (6) center has hole II
(62), hole I (19) and hole II (62) are provided with the first rubber column (3)；Clutch shaft (10) center has
Hole III (102), transmission input shaft (13) center has hole IV (131), hole III (102) and hole IV (131)
In the second rubber column (14) is installed.
The depopulated helicopter PTO that a kind of employing the most as claimed in claim 1 is flexible coupling, its feature exists
In: described main shaft output shaft (6) is provided with spline (7), and engaging sleeve (8) is inner gear structure, engaging sleeve (8)
It is sleeved on spline (7), can slide axially on main shaft output shaft (6).
The depopulated helicopter PTO that a kind of employing the most as claimed in claim 1 is flexible coupling, its feature exists
In: being set with gear (18) on described clutch shaft (10), the external tooth of gear (18) is interior with engaging sleeve (8)
Tooth engages, and main shaft output shaft (6) rotates together with clutch shaft (10), it is achieved transmission power, real during disengagement
Now cut off power.
The depopulated helicopter PTO that a kind of employing the most as claimed in claim 1 is flexible coupling, its feature exists
Being integrated with transmission input shaft (13) in: described output shaft (22) and be connected, output shaft is cased with axle on (22)
Set (21), axle sleeve (21) and change speed gear box (12) are bolted installation.
The depopulated helicopter PTO that a kind of employing the most as claimed in claim 1 is flexible coupling, its feature exists
In: one end of described output shaft (22) is provided with belt pulley (23), the end face of belt pulley (23) has scattered
Hot hole (231), louvre (231) is along the end face circle distribution of belt pulley (23)；Described belt pulley (23) can
To select the belt wheel transmission of any one forms such as V band, Timing Belt, flat rubber belting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610466817.7A CN106005446B (en) | 2016-06-22 | 2016-06-22 | Unmanned helicopter power output device adopting flexible connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610466817.7A CN106005446B (en) | 2016-06-22 | 2016-06-22 | Unmanned helicopter power output device adopting flexible connection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106005446A true CN106005446A (en) | 2016-10-12 |
| CN106005446B CN106005446B (en) | 2021-02-05 |
Family
ID=57086629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610466817.7A Active CN106005446B (en) | 2016-06-22 | 2016-06-22 | Unmanned helicopter power output device adopting flexible connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106005446B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106516101A (en) * | 2016-11-30 | 2017-03-22 | 中国直升机设计研究所 | Connecting piece for rotor wing of rotor tower of helicopter |
| CN110594313A (en) * | 2019-09-23 | 2019-12-20 | 浙江铃丰科技有限公司 | Novel clutch assembly |
| CN111457075A (en) * | 2020-03-31 | 2020-07-28 | 中国航发湖南动力机械研究所 | Antifriction device and aircraft transmission system main reducer |
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| CN201240501Y (en) * | 2008-06-06 | 2009-05-20 | 中国航空动力机械研究所 | Speed reducing driver for helicopter rotor |
| CN101610949A (en) * | 2007-01-15 | 2009-12-23 | Gif工业研究有限责任公司 | Aircraft propeller drive is used to drive method, the purposes of aircraft propeller drive bearing and the purposes of motor of properller |
| CN202118185U (en) * | 2011-07-02 | 2012-01-18 | 济南吉美乐电源技术有限公司 | Damping and supporting device of thermal-insulating shield |
| US20120068007A1 (en) * | 2010-09-16 | 2012-03-22 | Eurocopter | Rotary wing aircraft provided with propulsion means, and a method applied by said aircraft |
| EP2815981A1 (en) * | 2013-06-21 | 2014-12-24 | Hamilton Sundstrand Corporation | Propeller rotor and engine overspeed control |
| CN105041962A (en) * | 2014-04-25 | 2015-11-11 | 通用汽车环球科技运作有限责任公司 | Torsional vibration damper for drive train |
-
2016
- 2016-06-22 CN CN201610466817.7A patent/CN106005446B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101610949A (en) * | 2007-01-15 | 2009-12-23 | Gif工业研究有限责任公司 | Aircraft propeller drive is used to drive method, the purposes of aircraft propeller drive bearing and the purposes of motor of properller |
| CN201240501Y (en) * | 2008-06-06 | 2009-05-20 | 中国航空动力机械研究所 | Speed reducing driver for helicopter rotor |
| US20120068007A1 (en) * | 2010-09-16 | 2012-03-22 | Eurocopter | Rotary wing aircraft provided with propulsion means, and a method applied by said aircraft |
| CN202118185U (en) * | 2011-07-02 | 2012-01-18 | 济南吉美乐电源技术有限公司 | Damping and supporting device of thermal-insulating shield |
| EP2815981A1 (en) * | 2013-06-21 | 2014-12-24 | Hamilton Sundstrand Corporation | Propeller rotor and engine overspeed control |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106516101A (en) * | 2016-11-30 | 2017-03-22 | 中国直升机设计研究所 | Connecting piece for rotor wing of rotor tower of helicopter |
| CN106516101B (en) * | 2016-11-30 | 2018-11-23 | 中国直升机设计研究所 | A kind of lifting airscrew tower rotor connector |
| CN110594313A (en) * | 2019-09-23 | 2019-12-20 | 浙江铃丰科技有限公司 | Novel clutch assembly |
| CN111457075A (en) * | 2020-03-31 | 2020-07-28 | 中国航发湖南动力机械研究所 | Antifriction device and aircraft transmission system main reducer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106005446B (en) | 2021-02-05 |
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Effective date of registration: 20231027 Address after: No. 19 Xinhuan Road, Nanming Street, Xinchang County, Shaoxing City, Zhejiang Province, 312500 Patentee after: Xinchang County Lina Silk Knitting Factory Address before: 312500-1, building 3, No. 39, Yulin Road, Xinchang County, Shaoxing City, Zhejiang Province Patentee before: Xinchang Chengsheng Machinery Technology Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A Power Output Device for Unmanned Helicopters Using Soft Connection Effective date of registration: 20231031 Granted publication date: 20210205 Pledgee: Bank of China Limited by Share Ltd. Xinchang branch Pledgor: Xinchang County Lina Silk Knitting Factory Registration number: Y2023330002505 |