CN202848028U - Rotor wing prerotation mechanism applicable to unmanned gyrocopter - Google Patents
Rotor wing prerotation mechanism applicable to unmanned gyrocopter Download PDFInfo
- Publication number
- CN202848028U CN202848028U CN2012205049006U CN201220504900U CN202848028U CN 202848028 U CN202848028 U CN 202848028U CN 2012205049006 U CN2012205049006 U CN 2012205049006U CN 201220504900 U CN201220504900 U CN 201220504900U CN 202848028 U CN202848028 U CN 202848028U
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- CN
- China
- Prior art keywords
- belt
- rotor
- belt pulley
- shaft
- rotor wing
- 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.)
- Expired - Lifetime
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/02—Gyroplanes
- B64C27/021—Rotor or rotor head construction
- B64C27/025—Rotor drives, in particular for taking off; Combination of autorotation rotors and driven rotors
Abstract
The utility model relates to a rotor wing prerotation mechanism applicable to an unmanned gyrocopter. A large belt pulley (3) is installed on a rotor wing shaft, two belt steering/tensioning wheels (7) are installed on a connecting shaft (10), two ends of the connecting shaft (10) are respectively fixed on a left support seat (12) and a right support seat (12) which are connected with a left installation base (15) and a right installation base (15) through bolts, the installation bases (15) are fixed on the unmanned gyrocopter through a support piece, a small belt pulley (18) is installed on an output shaft of a motor, a holding device (21) is fixed on the small belt pulley (18) through a press plate (22), the large belt pulley (3), the small belt pulley (18) and the two belt steering/tensioning wheels (7) are connected through a belt, when the holding device (21) holds the output shaft of the motor, the power of the motor can be transmitted to the rotor wing shaft through the belt so as to drive the rotor wing to rotate, when the rotor wing prerotates and achieves the set rotation speed, the holding device (21) loosens, the rotor wing rotates automatically, and the belt is in an idling state along with the rotor wing.
Description
Technical field
The present invention relates to the autogyro driving system, relate in particular to the prerotation transmission device of unmanned autogyro, belong to the Flight Vehicle Design technical field.
Background technology
Autogyro causes people's attention again because its good rotation performance reaches higher economy, safety.The pre-rotation mechanism of rotor is that cyclogyro is realized the necessary transmission device of richochet (a kind of mode of taking off), its effect is that engine output is passed to rotor system, make rotor forward in advance certain rotating speed to, then promote rotor total apart from and handle feathering and make cyclogyro realize richochet.
At present, the pre-rotation mechanism of autogyro commonly used has following several form, the one, Zhu Qinghua, " gyroplane general design gordian technique research .[D] " Nanjing Aero-Space University, the version of the 2007. belt+gear that proposes+power-transfer clutchs, its principle is on the engine output shaft belt pulley to be installed, in rotor shaft finishing bevel gear cuter is installed, end at transmission shaft is installed finishing bevel gear cuter, and the other end is installed belt pulley, and power-transfer clutch is set in the middle of the transmission shaft.Engine power can be passed to rotor system through belt pulley, transmission shaft and finishing bevel gear cuter like this.This form needs long transmission shaft, organizes tilting bearing, two finishing bevel gear cuters more, and structural weight is large, and transmission shaft is connected by finishing bevel gear cuter with rotor shaft, and level of vibration is large.The 2nd, Rotorcraft Flying Handbook, the version of 2000 friction wheel+flexible axle of listing+toothed discs, its principle are that engine output shaft is installed friction wheel, in rotor shaft straight gear are installed, and flexible axle one end is friction wheel, and the other end is straight gear.Engine power can be passed to rotor system through friction wheel, flexible axle and straight gear like this.This form flexible axle transmitting torque is limited, only sees on the small-sized cyclogyro.The belt-driving form that adopts on the 3rd, the CarterCopter cyclogyro, though this form is simple in structure, when the rotor shaft casterangle was larger, belt substantial deviation belt pulley can cause loss in efficiency.Except the pre-rotation mechanism of above-mentioned machinery, the mode of pre-switch rotor also has electronic prerotation, and principle is on the motor output shaft small Spur gear to be installed, and large straight gear is installed on the rotor shaft, and motor start-up can drive the main rotor rotation.The Hydraulic Pump prerotation, this form principle is similar to electronic prerotation, and difference is that power form changes Hydraulic Pump into by electrical motor.Blade tip sprays prerotation, and its principle be jet-stream wind backward in the blade tip, by the antagonistic force driving rotor prerotation of air-flow.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, a kind of transmission device lightweight, simple in structure, safe and reliable, with low cost of realizing the rotor prerotation is provided.
Technical solution of the present invention is: a kind of pre-rotation mechanism of rotor that is applicable to unmanned autogyro comprises big belt pulley, adapter shaft, small belt pulley, enclasp device, pressing plate and two belt tension wheel flutters; Big belt pulley is installed on the rotor shaft, two belt steering tension wheels are installed on the adapter shaft, the adapter shaft two ends are separately fixed on the supporting seat of the left and right sides, are bolted between left and right sides supporting seat and the left and right sides mounting seat, and mounting seat is fixed on the unmanned autogyro by strut member; Small belt pulley is installed on the output shaft of driving engine, and enclasp device is fixed on the small pulley with pressing plate; Contact by a belt between big belt pulley, small belt pulley and two belt steering/tension wheels; When enclasp device is held engine output shaft tightly, engine power can be driven rotor wing rotation by belt transport to rotor shaft, after rotor forwarded the regulation rotating speed in advance to, enclasp device unclamped, autorotation, belt is in idling conditions with rotor.
Described enclasp device is two semicircle devices of inner invoice serration groove, coincide with the engine output shaft invoice serration.
The present invention compared with prior art beneficial effect is:
(1) but the present invention utilizes the characteristic of belt softness large deformation, the big belt pulley by being installed on rotor shaft and be installed on the small belt pulley of engine output shaft and two turn to/tension wheel realizes that engine power transmits to rotor shaft.Version is simplified, and structural weight reduces.Simultaneously, adopt belt-driving, can effectively reduce the level of vibration of rotor system in the power delivery process.Rotor prerotation rotating speed driving engine output speed ratio when driving is the ratio of small pulley diameter and large pulley diameters.
(2) the present invention realizes the transmission of engine power by being installed on enclasp device on the small belt pulley.After enclasp device unclamped, belt was in idling conditions with autorotation, not consumption of engine power.
(3) the present invention realizes belt tension by adapter shaft supporting seat, mounting seat, bolt, four bolts about rotation, and the adapter shaft supporting seat can seesaw, thereby realizes the belt tension function; And realize the sway of belt tension/wheel flutter by the number that increases or reduce adapter shaft head bearing back-up ring, thus realize belt with the adjustment of belt pulley area of contact; Simple in structure, reliability is high.
(4) the present invention can adjust by the number that increases or reduce back-up ring on the engine output shaft position of small pulley, and belt and small pulley coincide good behind the realization belt tension; Also can be by increasing or reduce the back-up ring that is installed on the rotor shaft, the position by adjusting large belt wheel is so that belt coincide good with large belt wheel.
Description of drawings
Fig. 1 a is the utility model two-dimensional representation;
Fig. 1 b is the utility model schematic three dimensional views;
Fig. 2 is each assembled plan sketch of the utility model;
Fig. 3 is the utility model rotor shaft, large belt wheel scheme of installation;
Fig. 4 a is the utility model belt tension/steering hardware schematic diagram;
Fig. 4 b is that the A of Fig. 4 a rotates schematic diagrams to 90 degree;
Fig. 5 a is the utility model small pulley and enclasp device schematic diagram;
Fig. 5 b is that the A of Fig. 5 a is to view.
The specific embodiment
The invention provides a kind of unmanned gyroplane with the pre-rotation mechanism of rotor, comprise three significant components, is respectively large pulley assemblies, tensioning/wheel flutter assembly and small pulley/enclasp device assembly.The below introduces respectively.
The position relationship of above-mentioned three significant components is shown in Fig. 1 a, 1b.Large belt wheel and tensioning/wheel flutter assembly are in one plane, and be identical good to guarantee belt and large belt wheel grooved, and small pulley and tensioning/wheel flutter assembly guarantees that belt and small pulley grooved coincide good in same vertical guide.
Fig. 2 is each parts setting plane.As shown in Figure 2, satisfying belt after each parts assembling is finished coincide good with large belt wheel grooved, small pulley grooved.The parts name of number in the figure and function are respectively by Fig. 3, Fig. 4 and Fig. 5 explanation.
Fig. 3 is large belt wheel installation component.Back-up ring 1 as shown in Figure 3, rotor shaft 2, large belt wheel 3 (power stage belt pulley), shaft end ring 4, belt 5.Rotor shaft 2 and large belt wheel 3 are connected to come transmitting torque by key, and spacing by shaft end ring 4; Can adjust the position of large belt wheel 3 on rotor shaft by the number of adjusting back-up ring 1 in the actual application, satisfy the curvature tolerance of belt and large belt wheel grooved behind the belt tension.
Fig. 4 a, 4b are tensioning/wheel flutter assembly.As shown in the figure, tensioning/wheel flutter assembly comprises bearing cap shim 6, tensioning/wheel flutter 7, deep groove ball bearing 8, back-up ring 9, adapter shaft 10, bolt 11, adapter shaft supporting seat 12, fix screw 13, jam nut 14, base 15.After belt 5 commutates by tensioning/wheel flutter 7, can drive large belt wheel 3 and rotate, thereby realize the rotor prerotation.
Two tensioning/wheel flutters 7 are connected with adapter shaft 10 by deep groove ball bearing 8 respectively.Adjust the position, the left and right sides (about need to adjust simultaneously) of tensioning/wheel flutter 7 by the number of deep groove ball bearing 8 left and right sides back-up rings 9, adjustable belt and belt wheel area of contact.By swivel bolt 11 adapter shaft supporting seat 12 is seesawed, the distance of adjustment and base 15 is carried out tensioning to belt.
Fig. 5 a, 5b are small pulley and enclasp device assembly.As shown in the figure, comprise deep groove ball bearing 16, output shaft 17, small belt pulley 18 (power input belt pulley), bearing cap shim 19, back-up ring 20, enclasp device 21, pressing plate 22.Small belt pulley 18 is connected on the output shaft of driving engine, adjusts the position of small belt pulley 18 on output shaft by the number of back-up ring on the axle 20, satisfies the curvature tolerance of belt and small pulley grooved behind the belt tension.Enclasp device 21 usefulness pressing plates 22 are fixed on the small pulley 18, hold output shaft tightly or unclamp by enclasp device 21, and enclasp device 21 is two semicircle devices of inner invoice serration groove, coincide with the output shaft invoice serration.When enclasp device 21 is held output shaft tightly, be about to power by belt transport to main rotor, realize the rotor prerotation, after enclasp device unclamped, small pulley 18 was in idling conditions, output shaft not transmitting torque to rotor shaft.
The unspecified part of the utility model belongs to general knowledge as well known to those skilled in the art.
Claims (2)
1. the pre-rotation mechanism of rotor that is applicable to unmanned autogyro is characterized in that: comprise big belt pulley (3), adapter shaft (10), small belt pulley (18), enclasp device (21), pressing plate (22) and two belt tension wheel flutters (7);
Big belt pulley (3) is installed on the rotor shaft, two belt steering/tension wheels (7) are installed on the adapter shaft (10), adapter shaft (10) two ends are separately fixed on the left and right sides supporting seat (12), be bolted between left and right sides supporting seat (12) and the left and right sides mounting seat (15), mounting seat (15) is fixed on unmanned on cyclogyro by strut member; Small belt pulley (18) is installed on the output shaft of driving engine, and enclasp device (21) is fixed on the small pulley (18) with pressing plate (22); Contact by a belt between big belt pulley (3), small belt pulley (18) and two the belt steering tension wheels (7); When enclasp device (21) when holding engine output shaft tightly, engine power can be driven rotor wing rotation by belt transport to rotor shaft, after rotor forwarded the regulation rotating speed in advance to, enclasp device (21) unclamped, autorotation, belt is in idling conditions with rotor.
2. a kind of pre-rotation mechanism of rotor that is applicable to unmanned autogyro according to claim 1, it is characterized in that: described enclasp device (21) is two semicircle devices of inner invoice serration groove, coincide with the engine output shaft invoice serration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205049006U CN202848028U (en) | 2012-09-29 | 2012-09-29 | Rotor wing prerotation mechanism applicable to unmanned gyrocopter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205049006U CN202848028U (en) | 2012-09-29 | 2012-09-29 | Rotor wing prerotation mechanism applicable to unmanned gyrocopter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202848028U true CN202848028U (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205049006U Expired - Lifetime CN202848028U (en) | 2012-09-29 | 2012-09-29 | Rotor wing prerotation mechanism applicable to unmanned gyrocopter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202848028U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019004879A1 (en) * | 2017-06-26 | 2019-01-03 | Acc Innovation Ab | Rotor flight vehicle |
| CN111911429A (en) * | 2019-05-08 | 2020-11-10 | 广东美的环境电器制造有限公司 | Fan with cooling device |
| USD920160S1 (en) | 2018-10-22 | 2021-05-25 | Acc Innovation Ab | Drone |
-
2012
- 2012-09-29 CN CN2012205049006U patent/CN202848028U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019004879A1 (en) * | 2017-06-26 | 2019-01-03 | Acc Innovation Ab | Rotor flight vehicle |
| USD920160S1 (en) | 2018-10-22 | 2021-05-25 | Acc Innovation Ab | Drone |
| CN111911429A (en) * | 2019-05-08 | 2020-11-10 | 广东美的环境电器制造有限公司 | Fan with cooling device |
| CN111911429B (en) * | 2019-05-08 | 2022-02-11 | 广东美的环境电器制造有限公司 | Fan with cooling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130403 |