Electric pre-rotation mechanism of rotorcraft

Abstract

The utility model relates to an electric pre-rotation mechanism of a rotorcraft, which is arranged at the upper part of a rotorcraft body rod, a rotor seat capable of tilting back and forth is arranged at the top of the rotorcraft body rod, a rotor disc is arranged on the rotor seat, the electric pre-rotation mechanism of the rotorcraft further comprises a pre-rotation mounting seat, a starting motor, a transmission mechanism and a throwing wheel, the starting motor, the transmission mechanism and the throwing wheel are mounted in the pre-rotation mounting seat, the starting motor drives the throwing wheel to rotate through the transmission mechanism, and the throwing wheel is meshed with the rotor disc after rotating. The rotor disc is directly driven by the starting motor, and compared with prerotation mechanisms of other rotorcrafts, the prerotation mechanism is simple in structure, convenient to maintain and replace, small in occupied space, large in driving force and high in driving efficiency. And the throwing wheel is meshed with the rotor disc after rotating, so that the clutch of the pre-rotating mechanism is simplified. The electric pre-rotation mechanism provided by the utility model can be modularly transplanted and can be additionally arranged on rotorcrafts of different models for use.

Description

Technical Field

[0001] The utility model relates to the technical field of autogyro pre-rotation mechanisms, in particular to an electric pre-rotation mechanism for an autogyro. Background Technique

[0002] An autogyro is a rotorcraft that uses the relative airflow during forward flight to blow the rotor to rotate automatically to generate lift. When an autogyro takes off, a pre-rotation mechanism is usually required to spin the rotor to shorten the takeoff distance.

[0003] Autogyros usually use engines for pre-rotation. However, the existing autogyro pre-rotation devices are large, occupy a lot of volume and have low pre-rotation efficiency. For example, in the Chinese patent with the patent number 2020232428907, the pre-rotation device used needs a clutch device to be connected to the main shaft of the engine, and the clutch device needs to transmit power to the rotor blades through a transmission mechanism. Content of the Utility Model

[0004] To solve the above problems, the purpose of the utility model is to provide an electric pre-rotation mechanism for an autogyro, which has a simple structure and reduces the volume of the autogyro pre-rotation mechanism.

[0005] In an embodiment of the utility model, the following scheme is adopted: an electric pre-rotation mechanism for an autogyro is arranged on the upper part of the fuselage rod of the autogyro. A rotatable rotor seat is arranged at the top of the fuselage rod, and a rotor disc is arranged on the rotor seat. The mechanism further includes a pre-rotation mounting seat, a starting motor, a transmission mechanism and a flywheel. The pre-rotation mounting seat is fixedly arranged on the side of the rotor seat. The starting motor, the transmission mechanism and the flywheel are installed inside the pre-rotation mounting seat. The starting motor drives the flywheel to rotate through the transmission mechanism, and after the flywheel rotates, it meshes with the rotor disc.

[0006] Preferably, the pre-rotation mounting seat is of a box structure, the top of the box is removed, the starting motor and the flywheel are installed at the bottom of the box, and openings are arranged on both sides of the box for tightly fitting with the rotor seat.

[0007] Preferably, the transmission mechanism includes a driving wheel, a synchronous wheel, a transmission belt and a tensioning wheel; the starting motor directly drives the driving wheel, the synchronous wheel rotates coaxially with the flywheel, the driving wheel and the synchronous wheel are connected by the transmission belt, and the tensioning wheel abuts against the outer side of the transmission belt.

[0008] Preferably, the starting motor is connected to the flight control computer of the autogyro through a control line via the fuselage rod.

[0009] Advantages of the present utility model: The present utility model directly drives the rotor disc with a starting motor. Compared with the pre-rotation mechanisms of other autogyros, it has a simple structure, is convenient for maintenance and replacement, occupies a small volume, has a greater driving force, and a high driving efficiency. And by the engagement of the flywheel after rotation with the rotor disc, the clutch of the pre-rotation mechanism is simplified. The electric pre-rotation mechanism proposed by the present utility model can be modularly transplanted and installed on autogyros of different models for use. Description of the Drawings

[0010] Figure 1 is a three-dimensional view of the present utility model Figure 1 ;

[0011] Figure 2 is a three-dimensional view of the present utility model Figure 2 ;

[0012] Figure 3 is a three-dimensional view of the present utility model Figure 3 ;

[0013] Figure 4 is a side view of the present utility model.

[0014] Reference numeral description: fuselage rod - 10, rotor seat - 1, rotor disc - 2, pre-rotation mounting seat - 3, starting motor - 4, control line - 40, transmission mechanism - 5, drive wheel - 51, synchronous wheel - 52, transmission belt - 53, tensioning wheel - 54, flywheel - 6. Detailed Description of the Preferred Embodiment

[0015] The present utility model will be further described below with reference to the drawings and specific embodiments.

[0016] Please refer to Figures 1 to 4 , an electric pre-rotation mechanism for an autogyro, which is arranged on the upper part of the fuselage rod 10 of the autogyro. A rotatable front and rear rotor seat 1 is arranged at the top of the fuselage rod 10, and the rotor disc 2 is provided on the rotor seat 1. It further includes a pre-rotation mounting seat 3, a starting motor 4, a transmission mechanism 5 and a flywheel 6. The pre-rotation mounting seat 3 is fixedly arranged on the side of the rotor seat 1. The inside of the pre-rotation mounting seat 3 is for installing the starting motor 4, the transmission mechanism 5 and the flywheel 6. The starting motor 4 drives the flywheel 6 to rotate through the transmission mechanism 5, and the flywheel 6 is engaged with the rotor disc 2 after rotation. The present utility model directly drives the rotor disc 2 with the starting motor 4. Compared with the pre-rotation mechanisms of other autogyros, it has a simple structure, is convenient for maintenance and replacement, occupies a small volume, has a greater driving force, and a high driving efficiency. And by the engagement of the flywheel 6 after rotation with the rotor disc 2, the clutch of the pre-rotation mechanism is simplified.

[0017] The pre-rotation mounting seat 3 is of a box structure, the top of the box is removed, the bottom of the box is for installing the starting motor 4 and the flywheel 6, and openings are provided on both sides of the box for tightly fitting with the rotor seat 1.

[0018] The transmission mechanism 5 includes a driving wheel 51, a synchronous wheel 52, a transmission belt 53 and a tensioning wheel 54; the starting motor 4 directly drives the driving wheel 51, the synchronous wheel 52 rotates coaxially with the flywheel 6, the driving wheel 51 and the synchronous wheel 52 are connected by the transmission belt 53, and the tensioning wheel 54 abuts against the outer side of the transmission belt 53. The transmission belt 53 is convenient for maintenance and replacement and is suitable for use with the starting motor 4 for rapid driving.

[0019] The starting motor 4 is connected to the flight control computer of the autogyro via a control line 40 through the fuselage rod 10. The electric pre-rotation mechanism proposed by the present utility model can be modularly transplanted and installed on autogyros of different models for use.

[0020] The following points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense, which can be mechanical connection or electrical connection, and can also be the communication inside two components, and can be directly connected. "Up", "down", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the object being described changes, the relative position relationship may change.

[0021] Second: In the attached drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other.

[0022] Finally, the above description is only the preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the idea of the present utility model belong to the protection scope of the present utility model.

Claims

1. An electric pre-rotation mechanism for a rotorcraft, arranged on the upper part of a rotorcraft fuselage rod (10), a rotor seat (1) capable of tilting forward and backward being arranged on the top of the fuselage rod (10), a rotor disc (2) being arranged on the rotor seat (1), characterized in that: The invention also comprises a pre-rotation mounting seat (3), a starting motor (4), a transmission mechanism (5) and a wheel (6). The pre-rotation mounting seat (3) is fixedly arranged on the side of the rotor seat (1). The interior of the pre-rotation mounting seat (3) is provided with the starting motor (4), the transmission mechanism (5) and the wheel (6) for installation. The starting motor (4) drives the wheel (6) to rotate through the transmission mechanism (5). After the wheel (6) rotates, it meshes with the rotor disc (2).

2. The electric pre-rotation mechanism for a rotorcraft according to claim 1, characterized in that: The pre-rotation mounting seat (3) is a box structure, the top of the box is removed, the bottom of the box is used for installing the starter motor (4) and the impeller (6), and openings are provided on both sides of the box for tightly fitting with the rotor seat (1).

3. The electric pre-rotation mechanism for a rotorcraft according to claim 1, characterized in that: The transmission mechanism (5) comprises a driving wheel (51), a synchronous wheel (52), a transmission belt (53) and a tension wheel (54); a starting motor (4) directly drives the driving wheel (51), the synchronous wheel (52) rotates coaxially with the impeller (6), the driving wheel (51) and the synchronous wheel (52) are connected by a transmission belt (53), and the outer side of the transmission belt (53) is against the tension wheel (54).

4. The electric pre-rotation mechanism for a rotorcraft according to claim 1, characterized in that: The starter motor (4) is connected to the flight control computer of the rotorcraft via a control line (40) through the fuselage rod (10).

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