Modularized electric pre-rotating device

Abstract

The utility model relates to a modularized electric pre-rotation device which is arranged on a rotor head of a rotorcraft and comprises a mounting seat, a pre-rotation motor, a transmission shaft and a pre-rotation shaft, the mounting seat is arranged on the rear side of the rotor head, the pre-rotating motor is mounted on a shell on the rear side of the mounting seat, the pre-rotating shaft is vertically arranged at the top of the mounting seat, the pre-rotating motor and the pre-rotating shaft are in transmission through the transmission shaft, and the pre-rotating shaft drives a rotor on the rotor head. According to the scheme, the rotor wing on the rotor wing head is directly driven by the prerotation motor, and compared with prerotation mechanisms of other rotorcrafts, the prerotation mechanism is simple in structure, convenient to maintain and replace, small in occupied size, larger in driving force and high in driving efficiency. Moreover, the rotor head is of a structure for controlling the tilting angle of the rotor, the rotor head is arranged on the rotor mast, the pre-rotation motor and the transmission mechanism thereof are arranged towards the outer side of the rear part, and the front-back tilt angle of the rotor head is kept, interference between the mounting seat and the rotor mast is prevented, and the maneuverability of the rotor head is kept while the requirement for rapid pre-rotation of the rotor is met.

Description

Technical Field

[0001] The utility model relates to the technical field of autogyro take-off, in particular to a modular electric pre-rotation device. 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 take-off 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 therein 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 a modular electric pre-rotation device with a simple structure, which reduces the volume of the autogyro pre-rotation mechanism.

[0005] In an embodiment of the utility model, the following scheme is adopted: a modular electric pre-rotation device is arranged on the rotor head of the autogyro, and includes a mounting seat, a pre-rotation motor, a transmission shaft and a pre-rotation shaft; the mounting seat is arranged at the rear side of the rotor head, the pre-rotation motor is installed on the rear side shell of the mounting seat, the pre-rotation shaft is vertically arranged on the top of the mounting seat, and the pre-rotation motor and the pre-rotation shaft are driven by the transmission shaft, and the pre-rotation shaft drives the rotor on the rotor head.

[0006] Preferably, the mounting seat includes side plates, a rear plate and rib plates. Two side plates are locked on both sides of the rotor head, the two side plates are respectively connected to both sides of the rear plate, the pre-rotation motor is installed outside the rear plate, the rib plates support between the two side plates and the rear plate, an opening for the pre-rotation shaft to pass through is opened in the rib plates, and a wedge-shaped notch is opened at the bottom of the side plate facing the rotor head.

[0007] Preferably, a bearing seat is further arranged at the bottom of the mounting seat, and the transmission shaft is sleeved in the bearing seat.

[0008] Preferably, the transmission shaft and the pre-rotation shaft are meshed and driven by a pair of bevel gears.

[0009] Preferably, shaft sleeves are further arranged at both ends of the bearing seat.

[0010] The utility model provides a modular electric pre-rotation device. Compared with the prior art, the utility model has at least the following technical effects: the present invention directly drives the rotor on the rotor head through the pre-rotation motor. Compared with the pre-rotation mechanism of other rotorcraft, the present invention has a simple structure, is easy to repair and replace, occupies a small volume, has a larger driving force, and has a high driving efficiency. In addition, the rotor head is a structure that controls the tilt angle of the rotor. The rotor head is arranged on the rotor mast. The present invention arranges the pre-rotation motor and its transmission mechanism to the outside of the rear part. While meeting the requirement of fast pre-rotation of the rotor, the front and rear tilt angles of the rotor head are maintained, the mounting seat is prevented from interfering with the rotor mast, and the maneuverability of the rotor head is maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is the front view of the utility model;

[0012] Figure 2 It is a structural explosion diagram of the utility model;

[0013] Figure 3 The structure of the mounting seat of the utility model Figure 1 ;

[0014] Figure 4 The structure of the mounting seat of the utility model Figure 2 .

[0015] Explanation of reference numerals: rotor head-1, mounting seat-2, pre-spin motor-3, transmission shaft-4, pre-spin shaft-5, side plate-21, rear plate-22, rib plate-23, bearing seat-6, bevel gear-45, shaft sleeve-60. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] See also Figures 1 to 4 A modular electric pre-rotation device is arranged on the rotor head 1 of a rotorcraft, and includes a mounting seat 2, a pre-rotation motor 3, a transmission shaft 4 and a pre-rotation shaft 5; the mounting seat 2 is arranged on the rear side of the rotor head 1, the pre-rotation motor 3 is installed on the rear side shell of the mounting seat 2, the pre-rotation shaft 5 is vertically arranged on the top of the mounting seat 2, the pre-rotation motor 3 and the pre-rotation shaft 5 are transmitted through the transmission shaft 4, and the pre-rotation shaft 5 drives the rotor on the rotor head 1. In this case, the rotor on the rotor head 1 is directly driven by the pre-rotation motor 3. Compared with the pre-rotation mechanism of other rotorcraft, the structure is simple, easy to repair and replace, and the volume is small, the driving force is larger, and the driving efficiency is high. In addition, the rotor head 1 is a structure for controlling the tilt angle of the rotor. The rotor head 1 is arranged on the rotor mast. In this case, the pre-rotation motor 3 and its transmission mechanism are arranged on the outside of the rear part. While meeting the requirement of fast pre-rotation of the rotor, the front and rear tilt angles of the rotor head 1 are maintained, the mounting seat 2 is prevented from interfering with the rotor mast, and the maneuverability of the rotor head 1 is maintained.

[0018] The mounting base 2 includes side plates 21, a rear plate 22 and rib plates 23. The two side plates 21 are locked on both sides of the rotor head 1. The two side plates 21 are respectively connected to both sides of the rear plate 22. The pre-rotation motor 3 is installed outside the rear plate 22. The rib plates 23 are supported between the two side plates 21 and the rear plate 22. An opening for the pre-rotation shaft 5 to pass through is provided in the rib plates 23. A wedge-shaped notch is provided at the bottom of the side plate 21 facing the rotor head 1. This wedge-shaped notch is to prevent interference between the mounting base 2 and the rotor mast when the rotor head 1 tilts forward and backward.

[0019] A bearing seat 6 is further provided at the bottom of the mounting base 2, and the transmission shaft 4 is sleeved inside the bearing seat 6.

[0020] To improve the transmission efficiency, in this case, the transmission shaft 4 and the pre-rotation shaft 5 are meshed and driven by a pair of bevel gears 45. Bushings 60 are also provided at both ends of the bearing seat 6.

[0021] The following points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. It can be a mechanical connection or an electrical connection, or it can be the communication inside two components. It can be directly connected. "Upper", "lower", "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.

[0022] Second: In the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. Other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0023] Finally, the above description is only the preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention.

Claims

1. A modular electric pre-rotation device, arranged on a rotor head (1) of a rotorcraft, characterized in that: The invention comprises a mounting seat (2), a pre-rotation motor (3), a transmission shaft (4) and a pre-rotation shaft (5); the mounting seat (2) is arranged on the rear side of a rotor head (1), the pre-rotation motor (3) is installed on the rear side shell of the mounting seat (2), the pre-rotation shaft (5) is vertically arranged on the top of the mounting seat (2), the pre-rotation motor (3) and the pre-rotation shaft (5) are transmitted through the transmission shaft (4), and the pre-rotation shaft (5) drives the rotor on the rotor head (1).

2. A modular electric pre-spinning device according to claim 1, characterized in that: The mounting seat (2) comprises a side plate (21), a rear plate (22) and a rib plate (23); the two side plates (21) are locked on both sides of the rotor head (1); the two side plates (21) are respectively connected to both sides of the rear plate (22); the pre-rotation motor (3) is installed outside the rear plate (22); the rib plate (23) is supported between the two side plates (21) and the rear plate (22); an opening for the pre-rotation shaft (5) to pass through is provided in the rib plate (23); and a wedge-shaped notch is provided on the side plate (21) towards the bottom of the rotor head (1).

3. A modular electric pre-spinning device according to claim 1, characterized in that: A bearing seat (6) is also provided at the bottom of the mounting seat (2), and the transmission shaft (4) is sleeved in the bearing seat (6).

4. A modular electric pre-spinning device according to claim 3, characterized in that: The transmission shaft (4) and the pre-rotation shaft (5) are meshed and driven via a pair of bevel gears (45).

5. A modular electric pre-spinning device according to claim 3, characterized in that: Both ends of the bearing seat (6) are also provided with shaft sleeves (60).

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