CN107310715B - Variable-pitch propeller and flying robot - Google Patents
Variable-pitch propeller and flying robot Download PDFInfo
- Publication number
- CN107310715B CN107310715B CN201710541539.1A CN201710541539A CN107310715B CN 107310715 B CN107310715 B CN 107310715B CN 201710541539 A CN201710541539 A CN 201710541539A CN 107310715 B CN107310715 B CN 107310715B
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- paddle
- sliding block
- groove
- sliding
- seat
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/30—Blade pitch-changing mechanisms
- B64C11/32—Blade pitch-changing mechanisms mechanical
- B64C11/36—Blade pitch-changing mechanisms mechanical non-automatic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/32—Rotors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/54—Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement
- B64C27/58—Transmitting means, e.g. interrelated with initiating means or means acting on blades
- B64C27/59—Transmitting means, e.g. interrelated with initiating means or means acting on blades mechanical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- B64U10/00—Type of UAV
- B64U10/10—Rotorcrafts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Remote Sensing (AREA)
- Toys (AREA)
Abstract
The invention discloses a variable-pitch propeller and a flying robot, which belong to the technical field of aircrafts, wherein the propeller comprises a propeller seat, a paddle and a sliding block, and the propeller seat is provided with a sliding groove and an auxiliary groove communicated with the sliding groove; the paddle is rotationally connected with the side wall of the paddle seat; the sliding block is in sliding connection with the sliding groove, a guide column accommodated in the auxiliary groove is arranged on the side face of the sliding block, one end, far away from the sliding block, of the guide column is in sliding connection with the paddle, and the guide column is used for converting movement of the sliding block into rotation of the paddle relative to the paddle seat. The rotation of paddle is conveniently adjusted through the removal of slider, and then changes paddle pitch size to change unmanned aerial vehicle power system, increase and decrease unmanned aerial vehicle product promotes the ratio, and then change unmanned aerial vehicle's response speed in the flight, reach the purpose of adjustment unmanned aerial vehicle product mobility, satisfy the demand of different service environment.
Description
Technical Field
The invention relates to the technical field of aircrafts, in particular to a variable-pitch propeller and an flying robot using the variable-pitch propeller.
Background
With the increasing development of aircraft technology, aircraft are widely used in the fields of aeronautical measurement, safety monitoring and the like. The propeller is an important component of an aircraft, and refers to a device for converting engine rotation power into propulsion by rotating blades in air or water. Pitch is an important parameter of the propeller, and is defined as: assuming that the air is absolutely stationary, the propeller rotates one revolution and the distance the aircraft is advanced is one pitch. Therefore, on the premise of a constant engine speed, the larger the pitch is, the faster the speed of the aircraft is. Obviously, the attack angle of the blade is large, the pitch is large, and the attack angle of the blade is in a proportional relation with the pitch, so that the attack angle of the blade is changed when the pitch of some propeller aircrafts or helicopters is changed, and the attack angle of the blade can be changed by rotating the blade by a certain angle relative to the installation seat where the blade is positioned. Most of the multi-rotor unmanned aerial vehicle has a fixed pitch propeller, and after the product is shaped, the push ratio of the propeller is also fixed. If a user needs to adjust the pitch of the propeller according to different use environments, the requirement of product maneuverability is further adjusted, and the existing product is difficult to realize.
Disclosure of Invention
The invention aims to provide a variable-pitch propeller, which aims to solve the technical problems that the propeller in the prior art is a fixed-pitch blade and has a narrow applicable range.
The invention further aims to provide a flying robot which aims to solve the technical problems that a propeller in the prior art is a fixed pitch blade and the applicable range is narrow.
The technical scheme adopted by the invention is as follows:
a variable pitch propeller comprising:
the paddle seat is provided with a chute and an auxiliary chute communicated with the chute;
the paddle is rotationally connected with the side wall of the paddle seat;
the sliding block is in sliding connection with the sliding groove, a guide column accommodated in the auxiliary groove is arranged on the side face of the sliding block, one end, far away from the sliding block, of the guide column is in sliding connection with the paddle, and the guide column is used for converting movement of the sliding block into rotation of the paddle relative to the paddle seat.
The blade is provided with a connecting hole, a threaded counter bore is formed in a position, corresponding to the connecting hole, of the paddle seat, an adjusting screw penetrates through the connecting hole to be connected with the threaded counter bore, and the connecting hole is movably connected with the adjusting screw.
The adjusting screw comprises a threaded portion, a first boss portion and a second boss portion which are sequentially connected, wherein the threaded portion is connected with the threaded counter bore, the first boss portion is movably connected with the connecting hole, and the second boss portion is located on one side, away from the paddle seat, of the paddle and used for limiting the paddle.
The blade can rotate in a range limited by the circular holes by taking the center of the circular holes as a rotating shaft.
The blade is characterized in that a waist-shaped sinking groove is formed in the position, corresponding to the guide post, of the blade, one end, away from the sliding block, of the guide post is connected with the waist-shaped sinking groove in a sliding mode, and the waist-shaped sinking groove is used for driving the blade to rotate and limiting the blade.
Wherein, still include:
the adjusting bolt is in threaded connection with the sliding block, and the sliding block is driven to linearly slide along the sliding groove by rotating the adjusting bolt;
and the pressing plate is fixedly connected with the paddle seat and is rotationally connected with one end, far away from the sliding block, of the adjusting bolt, and the pressing plate is used for limiting the adjusting bolt.
The adjusting bolt comprises a screw rod, a limiting part connected with the screw rod and a round boss arranged on one side, far away from the screw rod, of the limiting part, the screw rod is in threaded connection with the sliding block, and the round boss penetrates through a limiting through hole in the pressing plate and is in rotary connection with the pressing plate.
The side surface of the limiting part, which is close to the pressing plate, is uniformly provided with a plurality of limiting protrusions at intervals along the circumferential direction, and the side surface of the pressing plate, which is close to the limiting part, is provided with limiting grooves at corresponding positions of the limiting protrusions.
The paddle seat is provided with a positioning groove for accommodating the limiting part at one end of the sliding groove, and the limiting part is rotationally connected with the positioning groove.
A flying robot comprising a variable pitch propeller as claimed in any one of the preceding claims.
The invention has the beneficial effects that:
the invention provides a variable-pitch propeller, which comprises a propeller seat, a paddle and a sliding block, wherein the propeller seat is provided with a sliding groove and an auxiliary groove communicated with the sliding groove; the paddle is rotationally connected with the side wall of the paddle seat; the sliding block is in sliding connection with the sliding groove, a guide column accommodated in the auxiliary groove is arranged on the side face of the sliding block, one end, far away from the sliding block, of the guide column is in sliding connection with the paddle, and the guide column is used for converting movement of the sliding block into rotation of the paddle relative to the paddle seat. The rotation of paddle for the paddle seat is conveniently adjusted through the movement of the sliding block, and then the pitch of the paddle is changed, so that a power system of the unmanned aerial vehicle is changed, the push ratio of the unmanned aerial vehicle product is increased or decreased, the response speed of the unmanned aerial vehicle in the flight process is changed, the purpose of adjusting the maneuverability of the unmanned aerial vehicle product is achieved, and the requirements of different use environments are met.
According to the flying robot provided by the invention, due to the adoption of the variable-pitch propeller, the pitch of the blade can be changed, so that a power system of the unmanned aerial vehicle is changed, the push ratio of the unmanned aerial vehicle product is increased or decreased, the response speed of the unmanned aerial vehicle in the flying process is further changed, the purpose of adjusting the maneuverability of the unmanned aerial vehicle product is achieved, and the requirements of different use environments are met.
Drawings
FIG. 1 is a schematic view of an exploded construction of a variable pitch propeller provided by the present invention;
FIG. 2 is a schematic view of the paddle seat of FIG. 1;
FIG. 3 is a schematic view of the set screw of FIG. 1;
FIG. 4 is a schematic view of the construction of the adjusting bolt of FIG. 1;
FIG. 5 is a schematic view of the platen of FIG. 1;
FIG. 6 is a front view of a variable pitch propeller provided by the present invention;
FIG. 7 is a top view of FIG. 6;
FIG. 8 is a cross-sectional view taken along A-A of FIG. 6;
FIG. 9 is a side view of FIG. 6;
FIG. 10 is a B-B cross-sectional view of FIG. 6;
FIG. 11 is a C-C cross-sectional view of FIG. 6 corresponding to FIG. 10;
FIG. 12 is a B-B cross-sectional view of the alternate state of FIG. 6;
fig. 13 is a C-C cross-sectional view of fig. 6 corresponding to fig. 12.
In the figure:
1. a paddle seat; 2. a paddle; 3. a slide block; 4. an adjusting screw; 5. an adjusting bolt; 6. a pressing plate;
11. a chute; 12. an auxiliary groove; 13. a threaded counter bore; 14. a positioning groove;
21. a circular hole; 22. circular arc holes; 23. waist-shaped sink groove;
31. a guide post;
41. a threaded portion; 42. a first boss portion; 43. a second boss portion;
51. a screw; 52. a limit part; 53. a circular boss; 521. a limit protrusion;
61. limiting through holes; 62. and a limit groove.
Detailed Description
The technical scheme of the invention is further described below with reference to the attached drawings and the embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the drawings related to the present invention are shown.
Referring to fig. 1 to 13, a variable pitch propeller comprises a hub 1, a blade 2 and a slider 3. A chute 11 and an auxiliary groove 12 communicated with the chute 11 are arranged on the paddle seat 1; the paddle 2 is rotationally connected with the side wall of the paddle seat 1; the sliding block 3 is in sliding connection with the sliding groove 11, a guide column 31 accommodated in the auxiliary groove 12 is arranged on the side face of the sliding block 3, one end, far away from the sliding block 3, of the guide column 31 is in sliding connection with the paddle 2, and the guide column is used for converting movement of the sliding block 3 into rotation of the paddle 2 relative to the paddle seat 1.
The rotation of paddle 2 for the paddle seat is conveniently adjusted in the removal through slider 3, and then changes paddle 2 pitch size to change unmanned aerial vehicle power system, increase and decrease unmanned aerial vehicle product promotes the ratio, and then change unmanned aerial vehicle's response speed in the flight, reach the purpose of adjustment unmanned aerial vehicle product mobility, satisfy the demand of different service environment.
In this embodiment, there are two paddles 2 respectively located at opposite sides of the paddle seat 1, and therefore, there are two guide posts 31 on the slider 3 respectively located at opposite sides of the slider 3. Of course, the number of the blades 2 may be set according to actual needs, and is not limited herein.
The paddle 2 is provided with a connecting hole, a threaded counter bore 13 is arranged at a position corresponding to the connecting hole on the paddle seat 1, the adjusting screw 4 passes through the connecting hole to be connected with the threaded counter bore 13, and the connecting hole is movably connected with the adjusting screw 4. In this embodiment, there are two connecting holes, one is a circular hole 21, the other is a circular hole 22, the circular hole 22 is concentric with the circular hole 21, and the blade 2 can rotate within the range defined by the circular hole 22 with the center of the circular hole 21 as the rotation axis.
The adjusting screw 4 comprises a threaded portion 41, a first boss portion 42 and a second boss portion 43 which are sequentially connected, the threaded portion 41 is connected with the threaded counter bore 13, the first boss portion 42 is movably connected with the connecting hole, and the second boss portion 43 is located on one side, away from the paddle seat 1, of the paddle 2 and used for limiting the paddle 2. In the present embodiment, the diameter of the first boss portion 42 is larger than the diameter of the screw portion 41, and the diameter of the second boss portion 43 is larger than the diameter of the first boss portion 42. Of course, the second boss portion 43 may not be cylindrical, as long as it is ensured that the blade 2 does not come out from the first boss portion 42.
Waist-shaped sinking grooves 23 are formed in positions, corresponding to the guide posts 31, on the paddles 2, and one ends, far away from the sliding blocks 3, of the guide posts 31 are connected with the waist-shaped sinking grooves 23 in a sliding mode and used for driving the paddles 2 to rotate and limiting the paddles 2. Of course, the sink groove may be formed in a shape other than a waist shape, and the shape is not limited thereto, as long as the sink groove can perform a guiding and limiting function. Because the guide post 31 slides along the sink and limits the paddle 2, the sink cannot be an arc hole concentric with the circular hole 21, otherwise the limiting function cannot be achieved.
The device also comprises an adjusting bolt 5 and a pressing plate 6, wherein the adjusting bolt 5 is in threaded connection with the sliding block 3, and the sliding block 3 is driven to linearly slide along the sliding groove 11 by rotating the adjusting bolt 5; the pressing plate 6 is fixedly connected with the paddle seat 1 and is rotationally connected with one end, far away from the sliding block 3, of the adjusting bolt 5, and is used for limiting the adjusting bolt 5.
The adjusting bolt 5 comprises a screw rod 51, a limiting part 52 connected with the screw rod 51 and a round boss 53 arranged on one side, far away from the screw rod 51, of the limiting part 52, the screw rod 51 is in threaded connection with the sliding block 3, and the round boss 53 penetrates through a limiting through hole 61 in the pressing plate 6 and is in rotary connection with the pressing plate 6. A plurality of limit protrusions 521 are uniformly distributed on the side surface of the limit part 52, which is close to the press plate 6, at intervals along the circumferential direction, and limit grooves 62 are formed on the corresponding positions of the limit protrusions 521 on the side surface of the press plate 6, which is close to the limit part 52. The paddle seat 1 is provided with a positioning groove 14 for accommodating a limiting part 52 at one end of the chute 11, and the limiting part 52 is rotationally connected with the positioning groove 14.
During assembly, the adjusting bolt 5 is screwed into and passes through the screw hole on the sliding block 3, then the sliding block 3 is embedded into the sliding groove 11 on the paddle seat 1, meanwhile, the guide post 31 is accommodated in the auxiliary groove 12, the limiting part 52 of the adjusting bolt 5 is embedded into the positioning groove 14, the adjusting bolt 5 is pressed by the pressing block, the limiting groove 62 is clamped with the limiting protrusion 521, and the pressing block is fastened on the paddle seat 1 by the screw, so that the freedom degree of the adjusting bolt 5 is limited, and only the freedom degree of rotation along the axial direction of the adjusting bolt 5 is reserved; the end of the guide post 31 far away from the sliding block 3 is inserted into the kidney-shaped countersink 23 on the blade 2, and the blade 2 and the paddle seat 1 are connected by the adjusting screw 4, but the blade 2 is not locked by the adjusting screw 4, because the first boss part 42 is movably connected with the connecting hole, the blade 2 can rotate in the range limited by the circular arc-shaped hole 22 by taking the center of the circular hole 21 as a rotating shaft.
When the screw pitch is adjusted, the adjusting bolt 5 is rotated, the sliding block 3 moves in the chute 11 along the axial direction of the adjusting bolt 5, and then the guide post 31 is driven to move along the auxiliary groove 12, one end of the guide post 31 is in sliding connection with the kidney-shaped sinking groove 23 of the blade 2, so that the guide post 31 extrudes the inner wall of the kidney-shaped sinking groove 23 to guide the blade 2, the blade 2 can rotate by taking the center of the circular hole 21 as a rotating shaft, when the adjusting bolt 5 is stopped, the guide post 31 does not move any more, the guide post 31 is tightly abutted against the kidney-shaped sinking groove 23, the freedom degree of the blade 2 along the rotation direction of the circular hole 21 as the axis is locked, the limit of the blade 2 is further realized, and finally the screw pitch of the blade 2 is changed.
In the process of rotating the adjusting bolt 5, because the limiting grooves 62 on the pressing blocks are clamped with the limiting protrusions 521 on the adjusting bolt 5, fixed angles are arranged between the adjacent limiting grooves 62, the adjusting bolt 5 can be positioned after passing through N fixed angles in the rotating process, and then N strokes of the sliding block 3 along the axial movement of the adjusting bolt 5 are controlled.
Fig. 10 to 13 show schematic views of the blade 2 in two states, respectively. The process of rotating the blade 2 from the state of fig. 11 to the state of fig. 13 is: the adjusting bolt 5 is rotated to enable the sliding block 3 to vertically move downwards, and meanwhile, the guide column 31 presses the side wall of the kidney-shaped sink groove 23, so that the blade 2 rotates clockwise by taking the center of the circular hole 21 as the axis; when the slider 3 stops moving downwards, the freedom degree of the blade 2 along the rotation direction of the center of the circular hole 21 as the axis is locked, and the pitch of the blade 2 is changed.
The embodiment of the invention also provides a flying robot, which comprises the variable-pitch propeller, and the pitch of the blades 2 can be changed, so that a power system of the unmanned aerial vehicle is changed, the push ratio of the unmanned aerial vehicle product is increased and decreased, the response speed of the unmanned aerial vehicle in the flying process is further changed, the aim of adjusting the maneuverability of the unmanned aerial vehicle product is achieved, and the requirements of different use environments are met.
The above embodiments merely illustrate the basic principle and features of the present invention, and the present invention is not limited to the above embodiments, but may be varied and altered without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A variable pitch propeller, comprising:
the paddle seat (1) is provided with a chute (11) and an auxiliary groove (12) communicated with the chute (11);
the paddle (2) is rotationally connected with the side wall of the paddle seat (1);
the sliding block (3) is in sliding connection with the sliding groove (11), a guide column (31) accommodated in the auxiliary groove (12) is arranged on the side surface of the sliding block (3), one end, far away from the sliding block (3), of the guide column (31) is in sliding connection with the paddle (2) and is used for converting movement of the sliding block (3) into rotation of the paddle (2) relative to the paddle seat (1);
a connecting hole is formed in the paddle (2), a threaded counter bore (13) is formed in the paddle seat (1) at a position corresponding to the connecting hole, an adjusting screw (4) penetrates through the connecting hole to be connected with the threaded counter bore (13), and the connecting hole is movably connected with the adjusting screw (4);
two connecting holes are formed, one is a circular hole (21), the other is a circular arc hole (22), the circular arc hole (22) is concentric with the circular hole (21), and the blade (2) can rotate in a range limited by the circular arc hole (22) by taking the center of the circular hole (21) as a rotating shaft;
a waist-shaped sinking groove (23) is formed in the position, corresponding to the guide column (31), of the blade (2), and one end, away from the sliding block (3), of the guide column (31) is connected with the waist-shaped sinking groove (23) in a sliding mode and is used for driving the blade (2) to rotate and limiting the blade (2);
adjusting screw (4) are including screw thread portion (41), first boss portion (42) and second boss portion (43) that connect gradually, screw thread portion (41) with screw thread counter bore (13) are connected, first boss portion (42) with connecting hole swing joint, second boss portion (43) are located paddle (2) are kept away from one side of paddle seat (1), are used for right paddle (2) are spacing.
2. The variable pitch propeller of claim 1, further comprising:
the adjusting bolt (5) is in threaded connection with the sliding block (3), and the sliding block (3) is driven to linearly slide along the sliding groove (11) by rotating the adjusting bolt (5);
and the pressing plate (6) is fixedly connected with the paddle seat (1) and is rotationally connected with one end, far away from the sliding block (3), of the adjusting bolt (5) and is used for limiting the adjusting bolt (5).
3. The variable-pitch propeller according to claim 2, wherein the adjusting bolt (5) comprises a screw (51), a limiting part (52) connected with the screw (51), and a circular boss (53) arranged on one side of the limiting part (52) away from the screw (51), wherein the screw (51) is in threaded connection with the slider (3), and the circular boss (53) passes through a limiting through hole (61) on the pressing plate (6) and is in rotational connection with the pressing plate (6).
4. A variable pitch propeller according to claim 3, wherein a plurality of limit protrusions (521) are uniformly distributed on the side surface of the limit part (52) close to the pressing plate (6) at intervals along the circumferential direction, and a limit groove (62) is formed on the side surface of the pressing plate (6) close to the limit part (52) at a position corresponding to the limit protrusion (521).
5. The variable-pitch propeller according to claim 4, wherein a positioning groove (14) for accommodating the limiting part (52) is provided at one end of the chute (11) on the propeller seat (1), and the limiting part (52) is rotatably connected with the positioning groove (14).
6. Flying robot comprising a variable pitch propeller according to any one of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710541539.1A CN107310715B (en) | 2017-07-05 | 2017-07-05 | Variable-pitch propeller and flying robot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710541539.1A CN107310715B (en) | 2017-07-05 | 2017-07-05 | Variable-pitch propeller and flying robot |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107310715A CN107310715A (en) | 2017-11-03 |
| CN107310715B true CN107310715B (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710541539.1A Active CN107310715B (en) | 2017-07-05 | 2017-07-05 | Variable-pitch propeller and flying robot |
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| CN (1) | CN107310715B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107972862B (en) * | 2017-11-21 | 2020-11-17 | 歌尔科技有限公司 | Load control method and device based on unmanned aerial vehicle and unmanned aerial vehicle |
| CN108033013A (en) * | 2017-12-14 | 2018-05-15 | 邵文远 | A kind of VTOL fixed-wing unmanned plane |
| CN109969389A (en) * | 2017-12-28 | 2019-07-05 | 昆山优尼电能运动科技有限公司 | A kind of blade connection structure |
| CN109677602B (en) * | 2018-12-26 | 2020-08-07 | 张耀天 | Unmanned aerial vehicle wing |
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| DE707983C (en) * | 1937-06-05 | 1941-07-09 | Ver Deutsche Metallwerke Ag | Adjustment gear for changing the blade pitch of two or more winged adjusting screws |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107310715A (en) | 2017-11-03 |
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