CN214429342U - Propeller direct-drive type combined motor - Google Patents

Abstract

The utility model provides a screw direct drive formula combination motor, including main drive motor and regulation pitch motor, main drive motor is direct drive formula external rotor motor, including inner stator and external rotor, the screw is connected to the external rotor, the inner stator is the quill shaft structure, has the cavity in the axle, regulation pitch motor locates in the cavity, regulation pitch motor is the inner rotor motor, including outer stator and inner rotor, the paddle interval of screw is adjusted through mechanical transmission to the output pivot of inner rotor. The propeller driving device has the advantages of simple structure, low noise, high efficiency and high reliability.

Description

Propeller direct-drive type combined motor

Technical Field

The disclosure relates to the field of motors, in particular to a propeller direct-drive combined motor.

Background

The propeller driving motor is composed of a main driving motor and a pitch adjusting motor, and the driving motor converts input electric energy into kinetic energy of mechanical motion, so that the propeller is driven to provide flight driving force.

The main driving motor and the pitch adjusting motor of the traditional propeller driving motor are both inner rotor motors, and the rotating shaft output torque of the main driving motor is transmitted to the propeller through a mechanical transmission structure to drive the rotating speed torque of the propeller. And adjusting the output torque of the rotating shaft of the pitch motor to adjust the blade pitch of the propeller through a mechanical transmission structure. The traditional propeller driving motor is characterized in that the output torque of the rotating shaft of the main driving motor and the output torque of the rotating shaft of the pitch adjusting motor are transmitted to the propeller through a mechanical transmission structure, the mechanical transmission structure is complex, the occupied space is large, and the multi-stage transmission has the defects of large noise, low efficiency and low reliability.

In view of the above, the present inventors have studied and designed a propeller direct drive type combined motor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a screw direct drive formula combination motor has reduced screw drive arrangement's mechanical transmission structure, has simple structure, low noise, high efficiency, the characteristics of high reliability.

According to an aspect of the disclosure, a propeller direct-drive combined motor comprises a main drive motor and a pitch adjusting motor, wherein the main drive motor is a direct-drive outer rotor motor and comprises an inner stator and an outer rotor, the outer rotor is connected with a propeller, the inner stator is of a hollow shaft structure, a cavity is arranged in a shaft, the pitch adjusting motor is arranged in the cavity, the pitch adjusting motor is an inner rotor motor and comprises an outer stator and an inner rotor, and an output rotating shaft of the inner rotor adjusts the blade pitch of the propeller through mechanical transmission.

According to at least one embodiment of the present disclosure, the outer rotor includes a first casing, a first magnetic steel, a turntable rear end cover, and a turntable front end cover, the first magnetic steel is bonded to the inner wall of the first casing, the turntable rear end cover is fixed to the rear end of the first casing, and the turntable front end cover is fixed to the front end of the first casing.

According to at least one embodiment of the present disclosure, the inner stator is composed of a first stator armature, a stator support, a first stator shaft and a second stator shaft, the first stator armature and the stator support are bonded by press fitting, and the stator support and the second stator shaft are fastened with the first stator shaft through screws after being bonded by interference fit and press fitting, so as to ensure coaxiality.

According to at least one embodiment of the present disclosure, the main driving motor further includes a first front bearing and a first rear bearing, and an inner ring and an outer ring of the first front bearing are respectively matched with the first stator shaft and the front end cover of the turntable.

According to at least one embodiment of the present disclosure, the main driving motor further includes a first snap spring, and the first snap spring is connected with the first stator shaft through a screw to play a role in fixing the first front bearing inner ring.

According to at least one embodiment of the present disclosure, the main driving motor further includes a second snap spring, and the second snap spring is connected with the second stator shaft through a screw to play a role in fixing the first rear bearing inner ring.

According to at least one embodiment of the present disclosure, the vent holes are respectively formed in the turntable rear end cover and the turntable front end cover, and the vent holes are uniformly distributed in the turntable rear end cover and the turntable front end cover. The first shell of the main driving motor directly drives the propeller to rotate, and wind generated by the propeller cools the inside of the main driving motor through the ventilation opening.

According to at least one embodiment of the present disclosure, the outer stator includes a second casing, a second stator armature, and a pitch motor rear end cap, the second stator armature is bonded and press-fitted into the second casing, and the second casing is connected to the pitch motor rear end cap by a screw.

According to at least one embodiment of this disclosure, the inner rotor includes second magnet steel, pivot and rotor bushing, the pivot is pressure equipment after the rubber coating to the rotor bushing, second magnet steel bonds in the rotor bushing surface.

According to at least one embodiment of the present disclosure, the pitch motor further includes a second front bearing and a second rear bearing, an inner ring and an outer ring of the second front bearing are respectively engaged with the rotating shaft and the second housing, and an inner ring and an outer ring of the second rear bearing are respectively engaged with the rotating shaft and the pitch motor rear end cap.

After adopting above-mentioned technical scheme, this disclosure has following beneficial effect:

1. the main driving motor adopts a direct driving mode, the rotary disc (the first machine shell) drives the propeller to rotate, and a mechanical transmission device is not arranged, so that the structure is simple, the noise is low, the efficiency is high, and the reliability is high;

2. the pitch adjusting motor and the main driving motor share one cavity, so that the structure is compact;

3. the propeller driving motor disclosed by the invention has the advantages of forced air cooling heat dissipation and good heat dissipation.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural diagram of the present disclosure.

Fig. 2 is a schematic structural diagram of the main drive motor of the present disclosure.

Fig. 3 is a schematic structural diagram of front and rear end covers of a turntable according to the present disclosure.

FIG. 4 is a schematic view of a pitch motor of the present disclosure.

Detailed Description

The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1, 2 and 4, the present disclosure discloses a propeller direct-drive combined motor, which includes a main drive motor 1 and a pitch adjustment motor 2, where the main drive motor 1 is a direct-drive outer rotor motor, and includes an inner stator 11 and an outer rotor 12, the outer rotor 12 is connected to a propeller, the inner stator 11 is a hollow shaft structure, a cavity is formed in the shaft, the pitch adjustment motor 2 is disposed in the cavity, the pitch adjustment motor 2 is an inner rotor motor, and includes an outer stator 21 and an inner rotor 22, and an output rotating shaft of the inner rotor 22 adjusts a pitch between blades of the propeller through mechanical transmission.

As shown in fig. 2, according to at least one embodiment of the present disclosure, the outer rotor 12 includes a first casing 121, a first magnetic steel 122, a turntable rear end cover 123 and a turntable front end cover 124, where the first magnetic steel 122 is adhered to an inner wall of the first casing 121, the turntable rear end cover 123 is fixed at a rear end of the first casing 121, and the turntable front end cover 124 is fixed at a front end of the first casing 121.

According to at least one embodiment of the present disclosure, the inner stator 11 is composed of a first stator armature 111, a stator support 112, a first stator shaft 113, and a second stator shaft 114, the first stator armature 111 and the stator support 112 are press-fitted and bonded, and the stator support 112 and the second stator shaft 114 are press-fitted and bonded in an interference fit manner and then fastened to the first stator shaft 113 through screws, so as to ensure coaxiality.

According to at least one embodiment of the present disclosure, the main driving motor 1 further includes a first front bearing 13 and a first rear bearing 14, and an inner ring and an outer ring of the first front bearing 13 are respectively engaged with the first stator shaft 113 and the turntable front end cover 124.

According to at least one embodiment of the present disclosure, the main driving motor 1 further includes a first snap spring 15 and a second snap spring 16, the first snap spring 15 is connected to the first stator shaft 113 through a screw, and plays a role in fixing the inner ring of the first front bearing 13; the second clamp spring 16 is connected with the second stator shaft 114 through a screw, and plays a role in fixing the inner ring of the first rear bearing 14.

As shown in fig. 3, according to at least one embodiment of the present disclosure, the turntable rear end cover 123 and the turntable front end cover 124 are respectively disposed at ventilation openings 1231, and the ventilation openings are uniformly distributed on the turntable rear end cover and the turntable front end cover. The first shell of the main driving motor directly drives the propeller to rotate, and wind generated by the propeller cools the inside of the main driving motor through the ventilation opening.

As shown in fig. 4, according to at least one embodiment of the present disclosure, the outer stator 21 includes a second casing 211, a second stator armature 212, and a pitch motor rear cover 213, the second stator armature 212 is bonded and press-fitted into the second casing 211, and the second casing 211 is connected to the pitch motor rear cover 213 by screws.

According to at least one embodiment of the present disclosure, the inner rotor 22 includes a second magnetic steel 221, a rotating shaft 222, and a rotor bushing 223, the rotating shaft 222 is press-fitted to the rotor bushing 223 after being glued, and the second magnetic steel 221 is bonded to an outer surface of the rotor bushing 223.

According to at least one embodiment of the present disclosure, the pitch motor 2 further comprises a second front bearing 23 and a second rear bearing 24, wherein the inner ring and the outer ring of the second front bearing 23 are respectively engaged with the rotating shaft 222 and the second casing 221, and the inner ring and the outer ring of the second rear bearing 24 are respectively engaged with the rotating shaft 222 and the pitch motor rear end cover 213.

The main driving motor is a direct-drive outer rotor motor and consists of an inner stator and an outer rotor. The rotary table of the outer rotor of the main driving motor is directly connected with the propeller blades, and the rotary table rotates to directly drive the propeller blades to rotate without a mechanical transmission structure. Fan-shaped vents are uniformly distributed on the rotary table, and wind brought up by the propeller directly enters the main driving motor through the fan-shaped vents to take away heat in the motor. The inner stator of the main driving motor is of a hollow shaft structure, and a cavity is arranged in the shaft. The pitch adjusting motor is an inner rotor motor and consists of an outer stator and an inner rotor. The pitch regulation motor is embedded in a stator shaft of the main driving motor, and an output rotating shaft regulates the blade pitch of the propeller through mechanical transmission. The propeller driving device has the advantages of simple structure, low noise, high efficiency and high reliability.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.

Claims (10)

1. The utility model provides a screw direct drive formula combination motor, its characterized in that, includes main drive motor and regulation pitch motor, main drive motor is direct drive formula external rotor motor, including inner stator and external rotor, the screw is connected to the external rotor, the inner stator is the quill shaft structure, has the cavity in the axle, regulation pitch motor locates in the cavity, regulation pitch motor is the inner rotor motor, including outer stator and inner rotor, the paddle interval of screw is adjusted through mechanical transmission to the output pivot of inner rotor.

2. The combination motor of claim 1, wherein the outer rotor comprises a first housing, a first magnetic steel, a turntable rear end cover and a turntable front end cover, the first magnetic steel is bonded to the inner wall of the first housing, the turntable rear end cover is fixed to the rear end of the first housing, and the turntable front end cover is fixed to the front end of the first housing.

3. The combined motor of claim 2, wherein the inner stator comprises a first stator armature, a stator bracket, a first stator shaft and a second stator shaft, the first stator armature and the stator bracket are bonded by press fitting, and the stator bracket and the second stator shaft are bonded by interference fit and press fitting and then fastened with the first stator shaft by screws to ensure coaxiality.

4. The combination motor of claim 3, wherein said main drive motor further comprises a first front bearing and a first rear bearing, said first front bearing having inner and outer rings that respectively engage said first stator shaft and said turntable front end cap.

5. The combination motor of claim 4, wherein the main drive motor further comprises a first snap spring coupled to the first stator shaft by a screw to secure the first front bearing inner ring.

6. The combination motor of claim 4, wherein the main drive motor further comprises a second snap spring coupled to the second stator shaft by a screw to secure the first rear bearing inner ring.

7. The combination motor according to claim 2, wherein the turntable rear end cover and the turntable front end cover are respectively provided with ventilation openings, and the ventilation openings are uniformly distributed on the turntable rear end cover and the turntable front end cover.

8. The combination motor of claim 1, wherein the outer stator comprises a second casing, a second stator armature, and a pitch motor rear end cap, the second stator armature being adhesively press fit into the second casing, the second casing being attached to the pitch motor rear end cap by screws.

9. The combination motor of claim 8, wherein the inner rotor includes a second magnetic steel, a rotating shaft and a rotor bushing, the rotating shaft is press-fitted to the rotor bushing after being coated with glue, and the second magnetic steel is bonded to an outer surface of the rotor bushing.

10. The combination motor of claim 9, wherein the pitch motor further comprises a second front bearing and a second rear bearing, wherein the inner and outer rings of the second front bearing are engaged with the shaft and the second housing, respectively, and wherein the inner and outer rings of the second rear bearing are engaged with the shaft and the pitch motor rear end cap, respectively.

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