CN113443137A

CN113443137A - Rotor pre-rotation control device of autorotation rotorcraft and control method thereof

Info

Publication number: CN113443137A
Application number: CN202011593562.3A
Authority: CN
Inventors: 朱清华; 牛春来; 申镇; 李宜恒; 范瑶
Original assignee: Nanjing Huahang Wing Aircraft Technology Co ltd
Current assignee: Nanjing Huahang Wing Aircraft Technology Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-09-28
Anticipated expiration: 2040-12-29
Also published as: CN113443137B

Abstract

The invention provides a pre-rotation control device for an autorotor rotor and a control method thereof. The control device includes a pre-rotation mechanism and a control mechanism. The pre-rotation mechanism includes a belt drive structure and a tension structure; the tension structure includes a belt tensioner The tensioning rocker arm, the belt tensioning wheel and the belt pressing block fixed on the belt tensioning rocker arm, and the belt tensioning rocker arm is provided with a belt loosening spring; When the pre-rotation cable is tightened by the control mechanism, the belt tensioner presses the belt so that the belt is in a tensioned state between the large pulley and the small pulley, and the power of the engine output shaft is transmitted to the rotor through the belt transmission structure and transmission mechanism. clutch gear. The present invention adopts a new pre-swirl and its manipulation mode, on the basis of realizing the original pre-swirl manipulation function, without the pre-swirl cylinder and the air circuit control device, reducing the complexity and structural weight of the pre-swirl system, and improving its safety sturdiness and reliability.

Description

Rotor pre-rotation control device of autorotation rotorcraft and control method thereof

Technical Field

The invention relates to the technical field of aviation, in particular to a rotor wing pre-rotation control device of a self-rotation rotorcraft and a control method thereof.

Background

The autorotation gyroplane (called gyroplane for short) is a gyroplane taking an autorotation rotor as a lifting surface, propeller pushing/pulling force or other energy supply modes as advancing power, and has the characteristics of simple mechanism, high safety, low cost and the like, and the rotor of the gyroplane realizes autorotation by depending on the forward incoming flow driving during flight to provide lift force. And adopt the rotor to revolve technique in advance, drive the rotor in advance through transmission before taking off, then take off after cutting off the transmission link through the clutch, can make the gyroplane can the ray formula jump or ultrashort apart from taking off.

The existing prerotation mechanism adopts a prerotation small cylinder and a gas circuit control device, and has the disadvantages of complex system, heavy structure weight, and low safety and reliability.

Disclosure of Invention

The invention provides a rotor wing pre-rotation control device of a self-rotation gyroplane and a control method thereof, aiming at solving the problems in the prior art, a new pre-rotation and control mode thereof are adopted, a pre-rotation cylinder and an air passage control device are removed on the basis of realizing the original pre-rotation control function, the complexity and the structural weight of a pre-rotation system are reduced, and the safety and the reliability of the pre-rotation system are improved.

The invention provides a rotor wing pre-rotation control device of an autorotation rotorcraft, which comprises a pre-rotation mechanism and a control mechanism, wherein the pre-rotation mechanism comprises a belt transmission structure and a tensioning structure, the belt transmission structure consists of a large belt wheel and a small belt wheel through a belt, the large belt wheel is positioned on an output shaft of an engine, and the small belt wheel is connected with a rotor wing clutch gear through a transmission mechanism; the tensioning structure comprises a belt tensioning rocker arm, a belt tensioning wheel and a belt pressing block, wherein the belt tensioning wheel and the belt pressing block are fixed on the belt tensioning rocker arm; the operating mechanism is connected with the belt tensioning rocker arm through a pre-rotation pull wire, when the operating mechanism tensions the pre-rotation pull wire, the belt tensioning wheel tightly presses the belt to enable the belt to be in a tensioning state between the large belt wheel and the small belt wheel, and the power of the output shaft of the engine is transmitted to the rotor clutch gear through the belt transmission structure and the transmission mechanism.

The control mechanism comprises a front control lever, a pre-rotation hook and a pre-rotation hook support, wherein the pre-rotation hook is arranged on the pre-rotation hook support, and the front control lever controls the pre-rotation pull wire to be tightened and loosened through the pre-rotation hook.

The further improvement is that the transmission mechanism is a flexible shaft.

The transmission mechanism is a hard shaft transmission consisting of a transmission shaft and a universal joint coupler.

In a further improvement, the transmission mechanism is an electric transmission mechanism consisting of a generator, a cable and a motor.

6. The rotary wing pre-rotation operator of autogyro according to claim 1, wherein: the transmission mechanism is hydraulic transmission consisting of a hydraulic pump, a hydraulic pipeline and a hydraulic motor.

The invention also provides a pre-rotation control method for the rotor of the autorotation rotorcraft, which comprises the following steps:

1) the belt tensioning rocker arm is under the action of the tension of the belt releasing spring, so that the belt tensioning wheel is not in contact with the belt, and meanwhile, the belt pressing block is tightly attached to the belt wound on the small belt wheel to prevent the belt and the small belt wheel from moving, and the belt and the large belt wheel are in a loose state;

2) starting the engine, wherein the power of an output shaft of the engine cannot be transmitted to the rotor wing through the large belt wheel and the belt;

3) the pilot pulls the front control lever backwards to a certain position and then hangs the pre-rotation hook at the bottom of the front control lever;

4) the operating lever is pushed forwards and drives the pre-rotation hook to move forwards, so that the pre-rotation pull wire is driven;

5) the pre-rotation pull wire drives the belt tensioning rocker arm to move, so that the belt tensioning wheel is in contact with the belt, the belt is compressed, meanwhile, the belt compression block is separated from the belt, the belt and the small belt wheel can move, and at the moment, the power of the engine is transmitted to the small belt wheel through the large belt wheel and the belt;

6) the small belt wheel drives the rotor wing clutch gear to rotate through the transmission mechanism, and when the rotor wing clutch gear rotates, the rotor wing clutch gear is pushed upwards to be meshed with the rotor wing large gear, so that the rotor wing is driven to rotate;

7) after the rotating speed of the rotor wing is stable, a pilot pulls the operating lever backwards, the pre-rotation pull wire is loosened, the state of the step 1) is returned, the rotor wing clutch gear is disconnected from and meshed with the rotor wing large gear under the action of gravity after no power is supplied, and then the rotor wing rotates by means of inertia;

8) and the control lever is continuously pulled backwards, the tail part of the prerotation hook is contacted with the prerotation hook support, when the control lever is continuously pulled backwards, the prerotation hook automatically falls off from the front control lever under the action of gravity, and the prerotation operation of the rotor wing is finished.

The invention has the beneficial effects that: the novel prerotation and the operation mode thereof are adopted, the prerotation cylinder and the gas circuit control device are removed on the basis of realizing the original prerotation operation function, the complexity and the structural weight of the prerotation system are reduced, and the safety and the reliability of the prerotation system are improved.

Drawings

Figure 1 is a perspective view of a rotorcraft;

figure 2 is a front view of the rotorcraft;

FIG. 3 is a side view of the rotorcraft;

figure 4 is a top view of the rotorcraft;

FIG. 5 is a perspective view of a rotorcraft with additional wings;

FIG. 6 is an elevation view of a rotorcraft with wings added;

FIG. 7 is a side view of the rotorcraft with the wing attached;

FIG. 8 is a top view of a wing-mounted rotorcraft;

FIG. 9 is a view of the tail boom attached to the frame;

FIG. 10 is a perspective view of the tail boom connected to the frame;

FIG. 11 is an exploded view of the tail boom attached to the frame;

FIG. 12 is a perspective view of the mast and frame connection;

FIG. 13 is a view of the mast connected to the frame;

FIG. 14 is an exploded view of the mast and frame connection;

FIG. 15 is a perspective view of the mast in a folded state;

FIG. 16 is a view of the mast folded condition;

FIG. 17 is a rear view of the trim apparatus;

FIG. 18 is a side view of the trim apparatus;

FIG. 19 is a perspective view of the trimming device;

FIG. 20 is a perspective view of the pre-rotation drive;

FIG. 21 is a pre-rotation map;

FIG. 22 is a front joystick prerotation control diagram;

FIG. 23 is a normal state view of the front joystick;

FIG. 24 is a normal state perspective view of the front joystick;

FIG. 25 is a component view of a rotorcraft fuselage;

FIG. 26 is a block diagram of the frame, engine, and pre-rotation system;

FIG. 27 is a rotor braking diagram;

figure 28 is a rotor braking schematic.

In the figure, a large belt wheel 1, a belt 2, a belt tensioning wheel 3, a small belt wheel 4, a belt tensioning rocker arm 5, a belt pressing block 6, a belt releasing spring 7, a pre-rotation pull wire 8, a flexible shaft 9, a front operating lever 10, a pre-rotation hook 11, a pre-rotation hook support 12 and an engine 13.

Detailed Description

The invention will be further explained with reference to the drawings.

Example one

The pre-rotation control device for the rotor of the autorotation rotorcraft is shown in figures 1 to 6 and comprises a pre-rotation mechanism and a control mechanism. The pre-rotation mechanism comprises a large belt wheel 1 of the engine, a belt 2, a small belt wheel 4, a belt tensioning wheel 3, a belt tensioning rocker arm 5, a belt releasing spring 7, a belt pressing block 6, a flexible shaft 9, a rotor clutch gear and the like, wherein the large belt wheel 1 is positioned on an output shaft of the engine 13, and the belt tensioning wheel 3 and the belt pressing block 6 are positioned on the belt tensioning rocker arm 5. The operating mechanism mainly comprises a front operating lever 10, a pre-rotation hook 11, a pre-rotation hook support 12, a pre-rotation pull wire 8 and the like. Wherein the front end of the pre-rotation pull wire 8 is connected with a pre-rotation hook 12, and the rear end is connected with the belt tensioning rocker arm 5.

A large belt wheel 1 in a pre-rotation mechanism is connected with an output shaft of an engine 13, the lower end of a flexible shaft 9 is connected with a small belt wheel 4, and the upper end of the flexible shaft 9 is connected with a rotor clutch gear. The large belt wheel 1 and the small belt wheel 4 are driven by a belt 2.

When prerotating, the forward push control lever 10 drives the prerotating pull wire 8, so that the belt tensioning wheel 3 is pulled to tension the belt 2, and the power of the engine 13 is transmitted to the rotor wing through the belt pulley and the flexible shaft 9. After the rotor rotational speed is stable, pull back control lever 10, the automatic control lever 10 that drops of follow of couple 11 in advance soon, and the belt 2 is loosened and is blocked the back, and the rotor loses power and leans on inertial rotation.

The flow of the rotor prerotation operation is as follows:

(1) the belt tensioning rocker arm 5 is under the action of the tension of the belt releasing spring 7, so that the belt tensioning wheel 3 is not in contact with the belt 2, meanwhile, the belt pressing block 6 is tightly attached to the belt 2 wound on the small belt wheel, the belt 2 and the small belt wheel 4 are prevented from moving, and the belt 2 and the large belt wheel 1 are in a loose state.

(2) The engine 13 is started, and the power of the engine output shaft cannot be transmitted to the rotor through the large belt wheel 1 and the belt 2.

(3) The pilot pulls the front joystick 10 backwards to a certain position and then hangs the pre-rotation hook 11 at the bottom of the front joystick 10.

(4) The operating rod 10 is pushed forward, and the operating rod 10 drives the pre-rotation hook 11 to move forward, so that the pre-rotation pull wire 8 is driven.

(5) The pre-rotation pull wire 8 drives the belt tensioning rocker arm 5 to move, so that the belt tensioning wheel 3 is in contact with the belt 2, and the belt 2 is tightly pressed. At the same time, the belt hold-down block 6 is separated from the belt 2, so that the belt 2 and the small pulley 4 can move. At this time, the power of the engine 13 is transmitted to the small pulley 4 through the large pulley 1 and the belt 2.

(6) The small belt wheel 4 drives the rotor clutch gear at the upper end of the flexible shaft to rotate through the flexible shaft 9, and when the rotor clutch gear rotates, the rotor clutch gear can be pushed upwards to be meshed with the rotor big gear, so that the rotor is driven to rotate.

(7) After the rotor rotational speed is stable, the pilot pulls the control lever 10 backward, and the pilot pulls the line in advance and relaxs 8, gets back to the state of step (1), and rotor clutching gear is behind no power, relies on the action of gravity to break off the meshing with the rotor gear wheel, and then the rotor leans on inertial rotation.

(8) The operating lever 10 is pulled back continuously, the tail part of the pre-rotation hook 11 is contacted with the pre-rotation hook support 12, and when the pulling back is continued, the pre-rotation hook 11 automatically falls off from the front operating lever 10 under the action of gravity. And the pre-rotation operation of the rotor wing is finished.

Example two

The flexible shaft 9 in the first embodiment may be replaced by other transmission modes, including but not limited to a hard shaft transmission consisting of a transmission shaft and a universal joint coupling, an electric transmission consisting of a generator, a cable and an electric motor, and a hydraulic transmission consisting of a hydraulic pump, a hydraulic pipeline and a hydraulic motor.

While the invention has been described in terms of its preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims

1. an autorotor rotor pre-rotation control device, is characterized in that: comprise pre-rotation mechanism and control mechanism, and described pre-rotation mechanism comprises belt drive structure and tension structure, and belt drive structure is composed of large pulley and small belt. The pulley is composed of belts, the large pulley is located on the output shaft of the engine, and the small pulley is connected with the rotor clutch gear through the transmission mechanism; the tensioning structure includes the belt tensioning rocker arm and the belt tensioning wheel fixed on the belt tensioning rocker arm and The belt pressing block, the belt tensioning rocker arm is provided with a belt loosening spring, the belt tensioning rocker arm is separated from the belt by the pulling force of the belt loosening spring, the belt pressing block is closely attached to the belt of the small pulley, and the belt It is in a slack state with the large pulley; the control mechanism is connected with the belt tensioning rocker arm through the pre-rotation pulley. When the control mechanism tightens the pre-rotation pulley, the belt tensioner presses the belt so that the belt is in the large pulley and the small belt. There is tension between the wheels, and the power of the engine output shaft is transmitted to the rotor clutch gear through the belt transmission structure and the transmission mechanism.

2. The autogyro rotor pre-rotation control device according to claim 1, wherein the control mechanism comprises a front joystick, a pre-rotation hook and a pre-rotation hook bracket, wherein the pre-rotation hook is arranged on the pre-rotation hook On the bracket, the front joystick controls the tension and relaxation of the pre-spin cable through the pre-spin hook.

3 . The autorotor rotor pre-rotation manipulation device according to claim 1 , wherein the transmission mechanism is a flexible shaft. 4 .

4 . The autogyro rotor pre-rotation manipulation device according to claim 1 , wherein the transmission mechanism is a hard shaft transmission composed of a transmission shaft and a universal joint coupling. 5 .

5 . The autogyro rotor pre-rotation control device according to claim 1 , wherein the transmission mechanism is an electric transmission consisting of a generator, a cable and an electric motor. 6 .

6. The autogyro rotor pre-rotation manipulation device according to claim 1, wherein the transmission mechanism is a hydraulic transmission composed of a hydraulic pump, a hydraulic pipeline and a hydraulic motor.

7. An autogyro rotor pre-rotation manipulation method is characterized in that comprising the following steps:

1) The belt tensioning rocker arm is affected by the tension of the belt relaxation spring, so that the belt tensioner does not contact the belt, and the belt pressing block is close to the belt wound around the small pulley, while the belt and the large pulley are in a relaxed state ;

2) Start the engine, at this time the power of the engine output shaft cannot be transmitted to the rotor through the large pulley and belt;

3) The pilot pulls the front joystick back to a certain position, and then hangs the pre-rotation hook on the bottom of the front joystick;

4) Push the joystick forward, the joystick drives the pre-spin hook to move forward, thereby driving the pre-spin cable;

5) The pre-rotation cable drives the belt tensioning rocker arm to move, so that the belt tensioner is in contact with the belt, thereby compressing the belt, and the belt pressing block is separated from the belt. At this time, the engine power is transmitted to the small belt through the large pulley and the belt on the wheel;

6) The small pulley drives the rotor clutch gear to rotate through the transmission mechanism. When the rotor clutch gear rotates, the clutch gear is pushed up to mesh with the rotor gear, thereby driving the rotor to rotate;

7) After the rotor speed is stable, the pilot pulls the joystick back, the pre-rotation cable is loosened, and returns to step 1) state. After the rotor clutch gear has no power, it is disengaged from the rotor gear by gravity, and then the rotor rotates by inertia. ;

8) Continue to pull the joystick back, and the tail of the pre-spin hook is in contact with the pre-spin hook bracket. When you continue to pull back, the pre-spin hook will automatically fall off the front joystick under the action of gravity, and the rotor pre-spin operation is completed.