CN207274961U - Variable-pitch propeller and unmanned plane - Google Patents
Variable-pitch propeller and unmanned plane Download PDFInfo
- Publication number
- CN207274961U CN207274961U CN201721211272.1U CN201721211272U CN207274961U CN 207274961 U CN207274961 U CN 207274961U CN 201721211272 U CN201721211272 U CN 201721211272U CN 207274961 U CN207274961 U CN 207274961U
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- propeller
- bevel gear
- variable
- pitch
- hub
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Abstract
The utility model belongs to technical field of aerospace, more particularly to a kind of variable-pitch propeller and unmanned plane；Variable-pitch propeller includes shaft, the first bevel gear being fixed in shaft, the second bevel gear being rotatably connected in shaft, is arranged the propeller boss being rotatablely connected in shaft between the two with it, the fixing axle axially vertical with it is fixedly connected with propeller boss, the propeller hub being rotatablely connected with it is arranged with fixing axle, the torsional deflection part being fixedly connected with propeller boss, propeller hub is arranged with fixation shaft portion between propeller hub and propeller boss, the blade driving bevel gear engaged with first bevel gear, second bevel gear is installed with propeller hub；Unmanned plane includes variable-pitch propeller.Pitch adjust automatically is realized under the interaction of Shaft Torque and torsional deflection part reaction torque, pitch diminishes when moment of torsion becomes larger, thrust performance enhancement, easy to the raising of acceleration capacity, flying speed, solve the problems, such as that the variable-pitch propeller acceleration capacity for changing pitch by thrust is weak and flying speed is not easy to improve.
Description
Technical field
The utility model belongs to technical field of aerospace, more particularly to a kind of variable-pitch propeller and unmanned plane.
Background technology
Variable-pitch propeller is to change pitch by thrust, and pitch, which changes corresponding blade angle, can also change, and is profit
The thrust produced with propeller adjusts pitch by the deformation of spring, and pitch reduces when thrust is big, and pitch becomes larger when thrust is small,
Main deficiency is can not to provide good acceleration capacity existing for this variable-pitch propeller, and flying speed is also not easy to improve.
Utility model content
The purpose of this utility model is to provide a kind of variable-pitch propeller and unmanned plane, it is intended to solves to change paddle by thrust
Away from variable-pitch propeller acceleration capacity it is weak and the problem of flying speed is not easy to improve.
The utility model is realized in this way a kind of variable-pitch propeller, the variable-pitch propeller includes shaft, is fixedly mounted
The second cone that first bevel gear and the shaft in the shaft are rotatablely connected and are oppositely arranged with the first bevel gear
The axis being rotatablely connected on gear, the spindle portion being set between the first bevel gear and the second bevel gear and with it
Hub and it is fixedly connected with the propeller boss and the fixing axle vertical with the hub axial；Be arranged with the fixing axle with
Its propeller hub being rotatablely connected, flexible reverse is arranged with the fixation shaft portion between the propeller hub and the propeller boss and is become
Shape part, the torsional deflection part are fixedly connected with the propeller boss, the propeller hub respectively；Blade is installed with the propeller hub
Driving bevel gear, the opposite both sides of the blade driving bevel gear are nibbled with the first bevel gear, the second bevel gear respectively
Close；Blade is fixedly connected with side of the propeller hub away from the propeller boss.
Sleeve is equipped with the torsional deflection part as an improvement being corresponded on the lateral wall of the propeller boss, described
Sleeve is equipped with the sleeve connection groove of circumferentially spaced setting close to the end of the torsional deflection part, in the propeller hub close to institute
The end for stating torsional deflection part is equipped with the propeller hub link slot of circumferentially spaced setting；On the both ends of the torsional deflection part
Tooth connection is respectively equipped with the corresponding sleeve connection groove, the propeller hub link slot, the tooth connection of respective side is respectively clamped into
In the sleeve connection groove, the propeller hub link slot.
As an improvement the sleeve is an integral structure with the propeller boss.
As an improvement the fixing axle is stay bolt, it is threadedly coupled with the lateral wall of the propeller boss.
As an improvement the propeller hub, the blade driving bevel gear are split structure, the blade driving cone tooth
Wheel is sleeved on propeller hub and is secured to connect；At the both ends of the propeller hub between the smooth bar part of the stay bolt respectively
Equipped with bearing.
As an improvement the mounting portion of the blade is inserted into the inner cavity of the propeller hub, in the propeller hub and the paddle
Connector is equipped between the mounting portion of leaf.
As an improvement the blade is provided with one, two, three or more a, corresponding each described blades
Place, which is respectively equipped with, to be secured to the propeller hub of connection, is set in the blade driving cone that connection is secured on the propeller hub
Gear, the fixing axle being fixedly connected with the propeller boss, the torsional deflection part being arranged between the propeller hub and the propeller boss,
And it is arranged on the sleeve on the propeller boss side wall.
As an improvement the torsional deflection part is the cylindrical member made of elastic material.
The utility model is realized in this way a kind of unmanned plane, the unmanned plane includes the variable-pitch propeller.
As an improvement the unmanned plane further includes body, the engine on the body, the engine
Output terminal be connected with the rotating shaft transmission of the variable-pitch propeller.
By adopting the above-described technical solution, the variable-pitch propeller of the utility model includes shaft, is fixedly mounted on shaft
On first bevel gear, with shaft rotation connection and be oppositely arranged with first bevel gear second bevel gear, be set in the first cone
The propeller boss that is rotatablely connected on spindle portion between gear and second bevel gear and with it and it is fixedly connected with propeller boss and and axis
The axially vertical fixing axle of hub；The propeller hub being rotatablely connected with it is arranged with fixing axle, the fixation between propeller hub and propeller boss
Flexible torsional deflection part is arranged with shaft portion, which is fixedly connected with propeller boss, propeller hub respectively；In propeller hub
On be installed with blade driving bevel gear, blade driving bevel gear is engaged with first bevel gear, second bevel gear respectively；In paddle
Side of the hub away from propeller boss is fixedly connected with blade；The unmanned plane of the utility model includes variable-pitch propeller.Variable-pitch propeller is
Turn in the moment of torsion of shaft and the pitch to interact to realize propeller of the reaction torque of torsional deflection part with workload, rotation
Speed and flying speed adjust automatically, when the moment of torsion of shaft becomes larger, the moment of torsion of shaft pass to blade blade angle is diminished, pitch
Diminish, thrust performance enhancement, easy to the enhancing of variable-pitch propeller acceleration capacity and the raising of flying speed, solves and pass through thrust
The variable-pitch propeller acceleration capacity for changing pitch is weak and the problem of flying speed is not easy to improve.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of the variable-pitch propeller of the utility model；
Fig. 2 is the schematic cross-sectional view of the variable-pitch propeller of the utility model；
Wherein, 11, shaft, 12, first bevel gear, 13, second bevel gear, 14, propeller boss, 141a, sleeve, 141b, sleeve,
15a, propeller hub, 15b, propeller hub, 16a, blade driving bevel gear, 16b, blade driving bevel gear, 17a, torsional deflection part, 17b, torsion
Turn deformable member, 18a, blade, 18b, blade, 19a, fixing axle, 19b, fixing axle.
Embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, is further elaborated the utility model.It should be appreciated that specific embodiment described herein is only explaining
The utility model, is not used to limit the utility model.
From Fig. 1 and Fig. 2, which includes shaft 11, the first bevel gear being fixedly mounted in shaft 11
12nd, the second bevel gear 13 that is rotatablely connected and is oppositely arranged with first bevel gear 12 with shaft 11, be set in first bevel gear 12
The propeller boss 14 that is rotatablely connected on 11 part of shaft between second bevel gear 13 and with it and be fixedly connected with propeller boss 14 and
The axially vertical fixing axle with propeller boss 14, is arranged with the propeller hub being rotatablely connected with it in fixing axle, propeller hub and propeller boss 14 it
Between fixation shaft portion on be arranged with flexible torsional deflection part, which fixes with propeller boss 14, propeller hub respectively
Connection, is installed with blade driving bevel gear on propeller hub, and the opposite both sides of the blade driving bevel gear are bored with first respectively
Gear 12, second bevel gear 13 engage, and blade is fixedly connected with side of the propeller hub away from propeller boss 14.
The operation principle and process of variable-pitch propeller are explained as follows with reference to attached drawing：
When propeller stops, the moment of torsion in shaft 11 and torsional deflection part is all zero, sets blade angle to cause at propeller
In full feathering state, full feathering state is that propeller is not rotated by the fluid matasomatism moved along rotor shaft direction in this state, usually
For blade angle close to 90 degree, blade angle is the angle between blade and Plane of rotation.
In general, under identical flying speed, revolution speed of propeller is high, and the moment of torsion that shaft 11 provides is larger；Under same rotational speed, flight
Speed is fast, and the moment of torsion that shaft 11 provides is smaller.
When the moment of torsion of shaft 11 becomes larger, the moment of torsion of shaft 11 promotes blade to rotate blade angle around fixing axle by gear mechanism
Reduce, make torsional deflection part that the torsional deflection of bigger occur, when reaction torque caused by torsional deflection part increases to and shaft 11
Balance when, propeller is fixed on a certain pitch.The moment of torsion of shaft 11 becomes hour, and the reaction torque of torsional deformation part, which is more than, leads to
The moment of torsion that gear mechanism passes to the shaft 11 of blade is crossed, blade blade angle under the promotion of torsional deflection part increases, and works as torsion
When reaction torque caused by deformable member is reduced to the balance with shaft 11, propeller is fixed on the position of a larger pitch
Place.
The moment of torsion of shaft 11 also changes after flying speed or rotating speed change, and gear mechanism is by shaft 11
Moment of torsion passes to blade, and blade changes its blade angle under shaft 11 and the collective effect of torsional deflection part, when torsional deflection part
After the balance of caused reaction torque and shaft 11, flying speed, revolution speed of propeller and pitch will all settle out, so
The pitch of propeller is automatically adjusted with flying speed and the real-time of rotating speed.
The variable-pitch propeller of the utility model is the moment of torsion and the interaction of the reaction torque of torsional deflection part in shaft 11
To realize the pitch of propeller with workload, rotary rpm and flying speed adjust automatically, when the moment of torsion of shaft 11 becomes larger,
The moment of torsion of shaft 11 passes to that blade makes blade angle diminish, pitch diminishes, thrust performance enhancement, accelerates energy easy to variable-pitch propeller
The enhancing of power and the raising of flying speed, solve by thrust change pitch variable-pitch propeller acceleration capacity it is weak and flight speed
The problem of degree is not easy to improve.
In the present embodiment, corresponded on the lateral wall of propeller boss 14 and sleeve is equipped with torsional deflection part, in sleeve close to torsion
The end for turning deformable member is equipped with the sleeve connection groove of circumferentially spaced setting, is set in propeller hub on the end of torsional deflection part
There is the propeller hub link slot of circumferentially spaced setting, specifically, sleeve is an integral structure with propeller boss 14, easy to process and definite
The setting position of sleeve；Torsional deflection part is cylindrical in shape and is set in fixing axle, the corresponding set on the both ends of torsional deflection part
Tooth connection is respectively equipped with cylinder link slot, propeller hub link slot, the tooth connection of respective side is respectively clamped into sleeve connection groove, propeller hub connection
Groove, realizes the connection of torsional deflection part and propeller boss 14, propeller hub.Usual torsional deflection part is flexible by silica gel, rubber etc.
Cylindrical member made of material.
In the present embodiment, fixing axle is stay bolt, is threadedly coupled with the lateral wall of propeller boss 14；Propeller hub passes through bearing and length
The smooth bar part connection of bolt.Fixing axle selects stay bolt not only to regard the axis that propeller hub rotates, but also can regard fastening
Propeller hub and propeller boss 14 are connected and accommodate torsional deflection part between propeller hub and propeller boss 14 by part.
In the present embodiment, propeller hub, blade driving bevel gear are split structure, and blade driving bevel gear is sleeved on propeller hub
And it is secured to connect, processing and manufacturing, installation easy to propeller hub and blade driving bevel gear；At the both ends of propeller hub with long spiral shell
Bearing is respectively equipped between the smooth bar part of bolt, strengthens rotating property and support performance.
In the present embodiment, in the inner cavity of the mounting portion insertion propeller hub of blade, set between propeller hub and the mounting portion of blade
There is connector, usual connector is bolt.
In the present embodiment, blade is provided with two, is respectively blade 18a, blade 18b；Corresponding blade 18a places equipped with
Propeller hub 15a, the blade driving bevel gear 16a and axis for being set on propeller hub 15a, being secured to connection that blade 18a is fixedly connected
Fixing axle 19a that hub 14 is fixedly connected, the torsional deflection part 17a being arranged between propeller hub 15a and propeller boss 14 and it is arranged on axis
The sleeve 141a of torsional deflection part 17a settings is corresponded on 14 side wall of hub；It is equipped with corresponding blade 18b and is fixedly connected with blade 18b
Propeller hub 15b, be set on propeller hub 15b, be secured to connection blade driving bevel gear 16b, be fixedly connected with propeller boss 14
Fixing axle 19b, the torsional deflection part 17b being arranged between propeller hub 15b and propeller boss 14 and it is arranged on corresponding on 14 side wall of propeller boss
The sleeve 141b that torsional deflection part 17b is set.Certain blade can also be provided with one, three or more.
A kind of unmanned plane is further related in the utility model, the unmanned plane include body, the engine on body with
And above-mentioned variable-pitch propeller, the output shaft of the engine and the shaft 11 of variable-pitch propeller are sequentially connected.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (10)
1. variable-pitch propeller, including shaft, it is characterized in that, the variable-pitch propeller further includes is fixedly mounted in the shaft
First bevel gear, with the shaft be rotatablely connected and be oppositely arranged with the first bevel gear second bevel gear, be set in
The propeller boss that is rotatablely connected on spindle portion between the first bevel gear and the second bevel gear and with it and with it is described
Propeller boss is fixedly connected and the fixing axle vertical with the hub axial；The paddle being rotatablely connected with it is arranged with the fixing axle
Hub, is arranged with flexible torsional deflection part, the torsion on the fixation shaft portion between the propeller hub and the propeller boss
Deformable member is fixedly connected with the propeller boss, the propeller hub respectively；Blade driving bevel gear, institute are installed with the propeller hub
The opposite both sides of blade driving bevel gear are stated to engage with the first bevel gear, the second bevel gear respectively；In the propeller hub
Side away from the propeller boss is fixedly connected with blade.
2. variable-pitch propeller according to claim 1, it is characterised in that the torsion is corresponded on the lateral wall of the propeller boss
Turn to be equipped with sleeve at deformable member, be equipped with the set of circumferentially spaced setting on the end of the torsional deflection part in the sleeve
Cylinder link slot, the propeller hub link slot of circumferentially spaced setting is equipped with the propeller hub on the end of the torsional deflection part；
The sleeve connection groove is corresponded on the both ends of the torsional deflection part, is respectively equipped with tooth connection at the propeller hub link slot,
The tooth connection of respective side is respectively clamped into the sleeve connection groove, in the propeller hub link slot.
3. variable-pitch propeller according to claim 2, it is characterised in that the sleeve and the propeller boss are integral type knot
Structure.
4. variable-pitch propeller according to claim 2, it is characterised in that the fixing axle is stay bolt, with the propeller boss
Lateral wall be threadedly coupled.
5. variable-pitch propeller according to claim 4, it is characterised in that the propeller hub, the blade driving bevel gear are
Split structure, the blade driving bevel gear are sleeved on propeller hub and are secured to connect；At the both ends of the propeller hub with
Bearing is respectively equipped between the smooth bar part of the stay bolt.
6. according to claim 2 to 5 any one of them variable-pitch propeller, it is characterised in that the mounting portion insertion of the blade
In the inner cavity of the propeller hub, connector is equipped between the mounting portion of the propeller hub and the blade.
7. variable-pitch propeller according to claim 6, it is characterised in that the blade be provided with one, two, three or
Person more, be respectively equipped with the corresponding each blade be secured to the propeller hub of connection, be set on the propeller hub with
Its described blade driving bevel gear being fixedly connected, the fixing axle being fixedly connected with the propeller boss, be arranged on the propeller hub
Torsional deflection part between the propeller boss and the sleeve being arranged on the propeller boss side wall.
8. variable-pitch propeller according to claim 1, it is characterised in that the torsional deflection part is made of elastic material
Cylindrical member.
9. unmanned plane, it is characterised in that including such as claim 1 to 8 any one of them variable-pitch propeller.
10. unmanned plane according to claim 9, it is characterised in that the unmanned plane further includes body, installed in the machine
Engine on body, the output terminal of the engine are connected with the rotating shaft transmission of the variable-pitch propeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721211272.1U CN207274961U (en) | 2017-09-20 | 2017-09-20 | Variable-pitch propeller and unmanned plane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721211272.1U CN207274961U (en) | 2017-09-20 | 2017-09-20 | Variable-pitch propeller and unmanned plane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207274961U true CN207274961U (en) | 2018-04-27 |
Family
ID=61982398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721211272.1U Active CN207274961U (en) | 2017-09-20 | 2017-09-20 | Variable-pitch propeller and unmanned plane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207274961U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107472514A (en) * | 2017-09-20 | 2017-12-15 | 上海歌尔泰克机器人有限公司 | Variable-pitch propeller and unmanned plane |
-
2017
- 2017-09-20 CN CN201721211272.1U patent/CN207274961U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107472514A (en) * | 2017-09-20 | 2017-12-15 | 上海歌尔泰克机器人有限公司 | Variable-pitch propeller and unmanned plane |
| CN107472514B (en) * | 2017-09-20 | 2024-03-08 | 上海歌尔泰克机器人有限公司 | Variable pitch propeller and unmanned aerial vehicle |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |