Propeller device of helicopter
By using cross ring tracks and roller structures to replace the hinges in the helicopter propeller device, simple and low-cost lift generation and blade protection are achieved, and the complex structure and high cost problems in the prior art are solved. They are suitable for helicopters and vertical starting Drone landing.
Patent Information
- Application Number
- CN202411745048.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-01-14
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing helicopter propeller device uses a hinge structure to control blade deflection, which has problems of complex structure and high cost, and lacks effective blade protection facilities.
A new propeller device was designed, adopting a cross ring track and roller structure. The motor drives the blades to rotate counterclockwise to generate lift, transmit torque through the ring track, reduce the use of hinge structure, and use the ring track as the protection of the blades. facility.
It realizes a simple structure, low cost and easy to control lift generation, reduces the risk of blade damage, and transmits torque through rollers and ring tracks, reducing the bearing capacity of the transmission shaft. It is suitable for helicopters and vertical take-off and landing drones.
Smart Images
Figure CN119305722A_ABST
Abstract
Description
Technical Field
[0001] The device belongs to the technical field of helicopter equipment production. Background Art
[0002] A ceiling fan is an electrical appliance for people to cool down. It is usually hung on the roof of a house. It consists of a fixed base, an intermediate frame, a motor, multiple blades, a voltage regulator, wires, etc. The blades are installed under the motor housing and are all bent horizontally downward at a certain angle in the same direction. When the voltage regulator is turned on, the fan rotates counterclockwise to generate downward wind force, bringing cool breeze to people. The voltage regulator can control the rotation speed of the fan, and the wind volume can be large or small. The existing helicopter propeller device has the blades on the top and the engine on the bottom. The hinge structure is used to control the horizontal downward deflection angle of the blades to increase or decrease the lift. Summary of the invention
[0003] (I) The technical problem to be solved by the device is: how to provide a new propeller device and blade protection facility without a hinge structure for a helicopter.
[0004] (II) The technical solution adopted is:
[0005] 1. According to the working principle of the electric fan, the length of the fan blade is extended, the hanging point is designed on the side, and rollers are installed at the end of the fan blade. The middle frame becomes a horizontal circular track, and the motor is installed above the center of the circular track. When the motor drives the fan blade to rotate, the roller rolls and rotates along the bottom of the circular track, generating downward wind force, that is, upward lift, and is used as a propeller device for a helicopter or a vertical take-off and landing drone.
[0006] 2. The propeller device includes: a cross-ring track, a mounting frame, a motor (engine), multiple blades, a turntable, multiple rollers, a motor control switch (engine start switch, throttle), supporting facilities, etc.
[0007] 3. The cross-ring track is in the shape of a ring, with a cross frame in the middle. A transmission shaft hole is drilled in the center of the cross frame. The diameter of the hole is larger than the diameter of the motor or engine transmission shaft to facilitate the passage of the transmission shaft; motor or engine mounting holes are set on the cross around the transmission shaft hole, and the motor or engine is fixedly installed above the center of the ring track; a mounting frame is set on one side of the cross-ring track.
[0008] 4. The turntable is circular, with a drive shaft mounting hole in the center and multiple blade mounting holes evenly and symmetrically arranged around it. The turntable is installed at the lower end of the motor or engine drive shaft and below the circular track.
[0009] 5. The blade is rectangular, with a petiole and a rotating shaft at both ends of one long side. A mounting hole is drilled on the petiole, and a roller is installed on the rotating shaft at the end of the blade. When the blade petiole is installed on the turntable, the axis of the roller rotating shaft is perpendicular and crosses the axis of the motor drive shaft, and the roller corresponds to and contacts with the bottom of the circular track.
[0010] Relative to the petiole, the blade plane is at an acute angle to the right and below with the petiole plane, which is suitable for devices that rotate counterclockwise. Multiple identical blades can be installed on a turntable. When the motor (engine) drives the blade to rotate counterclockwise, downward wind force is generated, that is, upward lift is generated. The lift generated by the propeller device is related to the bending angle of the blade, the length and width of the blade, the number of blades, the rotation speed of the blade, etc. The larger the length, width, number, and rotation speed of the blade, the greater the lift generated when the blade rotates. The deflection angle between 10° and 30° is more suitable.
[0011] Instructions for use: Install two sets of the cross-circular tracks of the device horizontally on the left and right sides above the fuselage through the mounting frame, turn on the motor control switch (start the engine), rotate the propeller blades, and roll and rotate the rollers along the bottom of the track. Increase the power (throttle) to increase the lift. The generated lift is transmitted to the fuselage through the rollers, circular tracks, mounting frames, etc., increasing the rotation speed of the blades. When the lift increases to a certain value, it can drive the helicopter to rise off the ground to a certain height; reduce the rotation speed, reduce the lift, and make the helicopter lower its height and land on the ground.
[0012] (III) Beneficial effects: The annular track serves as a protective facility for the propeller blades, which reduces damage to the blades and increases the usable space; the propeller device does not use a hinge structure to control the deflection of the blades, has a simple structure, low cost, and is easier to operate; when the motor drives the blades to rotate, the lift generated is transmitted to the fuselage through the rollers, annular track, mounting frame, etc., and the bearing capacity of the drive shaft is greatly reduced.
[0013] (IV) Scope of application: The propeller device is suitable for helicopters and vertical take-off and landing UAVs, providing a new propeller device that generates lift for helicopters and vertical take-off and landing UAVs.
[0014] 4. In the accompanying drawings, the curved arrows represent the direction of rotation of the fan blades or propeller blades, and the vertical arrows represent the direction of wind force.
[0015] Figure 1 Schematic diagram of ceiling fan structure;
[0016] Figure 2 Side view of ceiling fan blades;
[0017] Figure 3 Front view of the turntable;
[0018] Figure 4 Front view of the propeller blade;
[0019] Figure 5 Side view of the lower right bent blade;
[0020] Figure 6 Side view of the motor, transmission shaft, turntable, blades, and roller installation structure;
[0021] Figure 7 Front view of the motor, transmission shaft, turntable, blades, and roller installation structure;
[0022] Figure 8 Cross-circular track side view;
[0023] Fig. 9 Front view of the cross-circular track;
[0024] Fig.10 A side view of the installation structure of the device;
[0025] 1. Roof 2. Fixing seat 3. Middle frame 4. Fan blade 5. Motor 6. Fan handle 7. Blade mounting hole 8. Drive shaft mounting hole 9. Turntable 10. Blade handle 11. Shaft 12. Blade 13. Motor (engine) 14. Drive shaft 15. Roller 16. Mounting frame 17. Drive shaft hole 18. Ring track 19. Mounting hole 21. Cross frame 22. Motor (engine) mounting hole DETAILED DESCRIPTION
[0026] 1. Figure 3 The rotating disk (9) is circular, a motor transmission shaft mounting hole (8) is arranged at the center, and four sets of blade mounting holes (7) are symmetrically arranged around the mounting hole.
[0027] 2. Figure 4 The blade (12) is rectangular in shape, with a petiole (10) mounted on one end, a mounting hole being arranged on the petiole, and a shaft (11) being mounted on the other end, and a roller (15) being mounted on the shaft; Figure 5 In the figure, the paddle plane is deflected about 20° to the lower right relative to the petiole plane.
[0028] 3. Fig. 9 In the invention, a cross frame (1) and an annular track (5) form a cross annular track, a transmission shaft hole (17) is punched at the center of the cross of the cross annular track, a motor (engine) mounting hole (22) is arranged on the cross (21) around the transmission shaft hole, a mounting frame (16) is arranged on one side of the annular track, and two cross annular tracks can be horizontally and symmetrically mounted on the top and both sides of the fuselage through the mounting frame.
[0029] 4. Fig.10In the invention, a motor (engine) is installed above the center of the circular track, and a transmission shaft passes downward through the transmission shaft hole of the cross circular track; a roller (15) is installed on the shaft (11) at the end of the blade, and the blade handles (10) of four sets of blades are installed on a turntable (9). The turntable is installed at the lower end of the transmission shaft from the bottom of the cross circular track, and the roller corresponds to the bottom of the circular track.
[0030] 5. Install electrical wires, control switches and other supporting facilities.
Claims
1. A propeller device for a helicopter, characterized in that: The motor (engine) drives the turntable, blades, and rollers to rotate counterclockwise, generating lift. The lift is transmitted to the fuselage through the rollers, circular track, and mounting frame, providing lift for the helicopter.
2. A helicopter propeller device according to claim 1, characterized in that: The cross-ring track is in the shape of a ring, with a cross frame in the middle, and a transmission shaft hole is drilled in the center of the cross frame; motor or engine mounting holes are arranged on the cross around the transmission shaft hole, and a fixed motor or engine is installed above the center of the ring track; a mounting frame is arranged on one side of the cross-ring track.
3. The helicopter propeller device according to claim 1, characterized in that: The turntable is circular, with a transmission shaft mounting hole in the center and multiple blade mounting holes evenly and symmetrically arranged around it.
4. A helicopter propeller device according to claim 1, characterized in that: The blade is rectangular, with a petiole and a rotating shaft at both ends of one long side. A mounting hole is drilled on the petiole, and a roller is installed on the rotating shaft at the end of the blade. Relative to the petiole, the blade plane forms an acute angle with the petiole plane to the lower right, which is suitable for devices rotating counterclockwise. Multiple blades are installed on a turntable.
5. The helicopter propeller device according to claim 1, characterized in that: The turntable is installed at the lower end of the motor (engine) transmission shaft and below the circular track, and the roller corresponds to and contacts the bottom of the circular track.