A helicopter power unit
By adopting a combination of turntable, blade, roller structure, motor controller, hydraulic device, and tail control switch in the helicopter, the problems of complex structure and difficult operation in the prior art are solved, and the coordinated control of lift, thrust and steering power are achieved, and the flight flexibility and efficiency of the helicopter are improved.
Patent Information
- Application Number
- CN202411855639.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-07
- Publication Date
- 2025-04-04
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing helicopter propeller device adopts a hinge structure and a control rudder, which is complex in technology and difficult to operate. It also requires a tail wing to offset the torque generated by the main rotor, increasing the complexity of the system.
The turntable, blade and roller structure are used instead of the hinge structure, and the motor controller, hydraulic device and tail control switch are used to achieve the generation of lift, thrust and steering power. The flight status of the helicopter is controlled by two propellers and tail wings with opposite rotation directions.
The structure and handling of the helicopter are simplified, the operation difficulty is reduced, the coordinated control of lift, thrust and steering power is achieved, and the flexibility and efficiency of flight is improved.
Smart Images
Figure CN119749844A_ABST
Abstract
Description
1. Technical Field
[0001] The device belongs to the technical field of helicopter equipment production. 2. Background Technology
[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 seat, 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 bending 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. The control rudder is used to control the flight state of the helicopter. The technology is complex and the operation is difficult. For a single-rotor helicopter, the torque generated by the rotation of the main rotor requires a tail wing to generate reverse thrust to offset the torque generated by the main rotor to keep the helicopter balanced and stable. For a twin-rotor helicopter, the two propellers rotate in opposite directions and generate opposite torques. When they are equal in size, they can offset each other to keep the fuselage balanced and stable. III. Summary of the invention
[0003] (I) The technical problem to be solved by the device is: how to provide a device for a helicopter without a hinge structure and a control rudder, which can generate lift, thrust and steering power.
[0004] (II) The technical solution adopted is:
[0005] 1. According to the working principle of the ceiling fan, the length of the fan blades is extended, the hanging point is designed on the side, and rollers are installed at the end of the fan blades. 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 blades to rotate, the rollers roll and rotate along the bottom of the circular track, generating downward wind force, that is, upward lift, to provide lift for the helicopter.
[0006] 2. The overall technical solution is: use a turntable, blades, and roller structure instead of a hinge structure, and use a motor controller, hydraulic device, and tail control switch instead of a rudder to control the flight of a helicopter; two motors, two propellers, and a tail are integrated on a power platform, and two propellers with opposite rotation directions are used to provide lift for the helicopter, offsetting the torque generated by each other. The tail serves as the rudder of the helicopter, providing steering power for the helicopter to turn left or right; a hydraulic device is used to control the power platform to tilt forward or backward, converting part of the lift into forward or backward thrust, pushing the helicopter to fly forward or backward. The greater the tilt angle of the power platform, the greater the thrust and the greater the flight speed; the greater the voltage, the greater the propeller speed, the greater the lift and thrust generated, the higher the flight altitude, and the greater the flight speed.
[0007] 3. The invention includes: multiple groups of batteries, two motors, a power platform, two sets of propellers, a tail wing, a hydraulic device, a motor control switch, etc.
[0008] 4. The power platform includes two left-right symmetrical cross-circular tracks, an "L"-shaped tail wing frame, a mounting frame, and an intermediate connecting frame.
[0009] The cross ring track is annular, 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, which is convenient for passing the transmission shaft. Motor mounting holes are set on the cross around the transmission shaft hole. The fixed motor is installed above the center of the ring track, the transmission shaft is downward, and the turntable is installed at the end. Two cross ring tracks are installed on both sides of the middle connecting frame.
[0010] An "L"-shaped tail wing rack is installed behind the connecting frame for mounting the tail wing.
[0011] The mounting frame is located below the middle connecting frame of the power platform, is in the shape of an inverted trapezoid, has an axial hole at the bottom, a built-in rotating shaft, bearings and bearing seats are installed at both ends of the rotating shaft, and the bearing seats are installed on the top of the fuselage.
[0012] 5.The propeller includes a motor, a turntable, blades, rollers, etc.
[0013] There are two types of motors. The counterclockwise rotating motor is installed above the center of the cross-ring track on the right side of the power platform. The drive shaft passes downward through the drive shaft hole to the bottom of the track, and a turntable is installed at the end. The clockwise rotating motor is installed above the center of the cross-ring track on the left side of the power platform. The drive shaft passes downward through the drive shaft hole to the bottom of the track, and a turntable is installed at the end.
[0014] The turntable is circular, with a transmission 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 transmission shaft and below the circular track.
[0015] The blade is rectangular, with a petiole and a rotating shaft respectively arranged at the two 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 intersecting with the axis of the motor drive shaft, and the roller corresponds to and contacts with the bottom of the circular track.
[0016] There are two types of blades. One is that the blade plane is at an acute angle of about 20° to the lower right relative to the petiole, which is suitable for propellers rotating counterclockwise. It is installed under the counterclockwise rotating motor. Multiple identical blades can be installed on a turntable. When the motor drives the blades to rotate counterclockwise, downward wind force is generated, that is, upward lift is generated. The other is that the blade plane is at an acute angle of about 20° to the lower left relative to the petiole, which is suitable for propellers rotating clockwise. It is installed under the clockwise rotating motor. Multiple identical blades can be installed on a turntable. When the motor drives the blades to rotate clockwise, downward wind force is generated, that is, upward lift is generated. The two propellers work separately, and the lift generated is superimposed on each other, which is the lift of the entire helicopter. The lift generated by the propeller is related to the bending angle of the blades, the length and width of the blades, the number of blades, the rotation speed of the blades, etc. The greater the length, width, number, and rotation speed of the blades, the greater the lift generated when the blades rotate. The deflection angle between 10° and 30° is more appropriate. The length, width, and deflection angle of the two blades are the same, and the number of blades installed on the two propellers is equal. The deflection directions of the two blades are opposite.
[0017] The torque generated by the propeller rotating counterclockwise is counterclockwise, and the torque generated by the propeller rotating clockwise is clockwise. When the two propellers rotate at the same speed, the torques generated are equal in magnitude and opposite in direction, canceling each other out, keeping the fuselage balanced and stable. When the two propellers rotate at different speeds, the torques generated are also different. When the counterclockwise propeller rotates at a higher speed, the helicopter fuselage will rotate counterclockwise, and vice versa, the helicopter will rotate to the right.
[0018] 6. Tail, including multiple identical tail blades, small motors, rings, etc. The small motor can be forward or reverse, and the ring is installed on the shaft. The tail blade is rectangular, with a petiole installed in the middle of one end. The petiole plane and the blade plane are at an angle of 20°, and the petiole is installed on the ring. The small motor of the tail is installed above the tail frame, and the tail rotation plane is perpendicular to the center line of the two cross ring tracks.
[0019] When the tail rotates counterclockwise, it blows air horizontally to the left, generating thrust to the right, and the tail of the fuselage swings to the right, providing the helicopter with power to turn left, so that the helicopter turns left or rotates left on the spot; when the tail rotates clockwise, it blows air horizontally to the right, generating thrust to the left, so that the helicopter turns right or rotates right on the spot. The tail is the steering device of the helicopter.
[0020] 7. The hydraulic device consists of a hydraulic cylinder, a hydraulic rod, and a controller. The hydraulic cylinder is installed above the fuselage, and the hydraulic rod is installed below the middle connecting frame of the power platform. The hydraulic device is manually operated to control the forward or backward tilt of the power platform by extending and retracting the hydraulic rod, and drive the propeller and tail wing to tilt forward or backward together.
[0021] When the power platform tilts forward, the two propellers change from blowing air vertically downward to blowing air backward and downward, generating forward thrust and upward lift, providing power for the helicopter to fly forward; when the power platform tilts backward, the two propellers blow air forward and downward, generating backward thrust and upward lift, providing power for the helicopter to fly backward. A hydraulic device and two motor throttles can control the helicopter to rise, lower, fly forward or fly backward.
[0022] 8. The control facilities for the two motors, the hydraulic device control facilities, the tail wing small motor control facilities, etc. are installed in the cab.
[0023] 9. Instructions for use: Manually operate the hydraulic device to keep the power platform in a horizontal state; start the two motors, and the two sets of propellers rotate to increase the power. When the lift is large enough, the helicopter can be driven to leave the ground and rise into the air, hover in the air, or lower to the ground; operate the hydraulic device to tilt the power platform forward, and part of the lift is converted into forward thrust, so that the helicopter can fly forward, increase the power, and increase the flight speed; operate the hydraulic device to tilt the power platform backward, and part of the lift is converted into backward thrust, so that the helicopter can fly backward, or slow down and brake when flying forward; the greater the tilt angle of the power platform, the greater the horizontal thrust generated, and the greater the forward or backward flight speed; in the hovering state, start the small motor of the tail to rotate, so that the helicopter can rotate left or right on the spot to adjust the direction of the nose; in the process of forward flight, start the tail to rotate, so that the helicopter can turn right or left.
[0024] (III) Beneficial effects: 1. The propeller device does not use a hinge structure and a control rudder to control the deflection of the blades, has a simple structure, and is easier to control the helicopter; 2. When the motor drives the blades to rotate, the lift generated is transmitted to the fuselage through rollers, circular tracks, mounting frames, etc., and the bearing capacity of the transmission shaft is greatly reduced; 3. The use of this device can not only provide lift for the helicopter, but also provide the helicopter with thrust for forward flight and power for turning left and right.
[0025] (IV) Scope of application: This power unit is applicable to helicopters and vertical take-off and landing UAVs. IV. Description of the drawings In the figure, the curved arrow is the direction of blade rotation, and the straight arrow is the direction of wind force.
[0027] Figure 1 Front view of the power platform;
[0028] Figure 2 Side view of the power platform;
[0029] Figure 3 Front view of the propeller blade;
[0030] Figure 4 Side view of the blade rotating counterclockwise;
[0031] Figure 5 Side view of the propeller blade rotating clockwise;
[0032] Figure 6 Schematic diagram of the clockwise rotating propeller structure;
[0033] Figure 7 Schematic diagram of the counterclockwise rotating propeller structure;
[0034] Figure 8 Front view of the tail blade;
[0035] Fig. 9 Side view of the tail blade;
[0036] Fig.10 Schematic diagram of the tail structure;
[0037] Fig.11 Schematic diagram of the power platform installation structure.
[0038] 1. Mounting frame 2. Ring track 3. Drive shaft hole 4. Cross frame 5. Tail frame 6. Shaft hole 7. Petiole 8. Shaft 9. Blade 10. Paddle blade petiole 11. Paddle 12. Turntable 13. Roller 14. Turntable mounting hole 15. Tail blade petiole 16. Tail blade 17. Ring 18. Motor 19. Bearing, bearing seat 20. Small motor 21. Fuselage 22. Connecting frame 23. Connecting rod mounting point V. Specific implementation methods
[0039] 1. Figure 1 In the invention, only two cross ring tracks (2) can be installed on both sides of the connecting frame (22), a transmission shaft hole (3) is punched in the center of the cross frame (4), and motor mounting holes are punched around; an "L"-shaped tail frame is installed at the rear of the connecting frame, and a small motor (20) mounting platform is arranged above the tail frame.
[0040] 2. Figure 3 The blade (9) is rectangular in shape, with a petiole (7) mounted on one end, a mounting hole being arranged on the petiole, and a shaft (8) being mounted on the other end, and a roller (13) being mounted on the shaft;
[0041] 3. Figure 4 In the figure, the paddle plane is deflected about 20° to the lower right relative to the petiole plane.
[0042] 4. Figure 5 In the figure, the paddle plane is deflected about 20° to the lower left relative to the petiole plane.
[0043] 5. Figure 6 In the invention, four clockwise rotating blades (11) and a roller (13) are installed on a turntable to form a propeller rotating in the clockwise direction.
[0044] 6. Figure 7 In the invention, four blades (19) and a roller (13) rotating counterclockwise are installed on a turntable to form a propeller rotating counterclockwise.
[0045] 7. Fig.10 In the invention, four tail blades (16) are mounted on a ring to form a tail propeller which is mounted on a shaft on a small motor.
[0046] 8. Fig.11 In the embodiment, a mounting frame (1) is installed in the middle position below the connecting frame, a shaft is installed in the shaft hole of the mounting frame, bearings and bearing seats (19) are installed at both ends of the shaft, and the bearing seats are installed above the fuselage (21); the oil cylinder of the hydraulic device is installed above the fuselage (19), and the connecting rod is installed on the mounting point (23) below the connecting frame. The clockwise rotating motor and the clockwise rotating propeller are installed on and below the cross-circular track on the left, and the roller (13) corresponds to and contacts the bottom of the circular track. The counterclockwise rotating motor and the counterclockwise rotating propeller are installed on and below the cross-circular track on the right, and the roller (13) corresponds to and contacts the bottom of the circular track (2). The small motor (20) of the tail wing is installed above the tail wing frame.
Claims
1. A helicopter power plant, characterized in that: Two symmetrical circular tracks are installed on the power platform, and two motors and propellers with opposite rotating directions are installed on the circular tracks. A tail wing is installed at the tail of the platform, and the mounting frame at the lower middle of the platform is installed above the fuselage. A hydraulic device controls the power platform to tilt forward or backward.
2. A helicopter power plant according to claim 1, characterized in that: The annular track is annular with a cross frame in the middle, a transmission shaft hole is punched in the center of the cross frame, and motor or engine mounting holes are arranged on the crosses around the transmission shaft hole.
3. The helicopter power plant according to claim 1, characterized in that: The blade is rectangular, with a petiole and a rotating shaft respectively arranged at the two ends of one long side, a mounting hole is drilled on the petiole, and a roller is installed on the 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 a device rotating in the counterclockwise direction, and the petioles of multiple blades are installed on a turntable; relative to the petiole, the blade plane forms an acute angle with the petiole plane to the lower left, which is suitable for a device rotating in the clockwise direction, and the petioles of multiple blades are installed on a turntable.
4. The helicopter power plant according to claim 1, characterized in that: The motor is installed above the center of the circular track, 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.
5. The helicopter power plant according to claim 1, characterized in that: The tail wing can rotate forward or reverse to generate horizontal thrust to the left or right.
6. A helicopter power plant according to claim 1, characterized in that: The hydraulic cylinder of the hydraulic device is installed on the machine body, and its connecting rod is installed under the platform.