CN220374748U

CN220374748U - Swash plate drive assembly and aircraft

Info

Publication number: CN220374748U
Application number: CN202322116835.0U
Authority: CN
Inventors: 张志强; 谷万鹏
Original assignee: Liaoning Huawan Technology Co ltd
Current assignee: Liaoning Huawan Technology Co ltd
Priority date: 2023-08-08
Filing date: 2023-08-08
Publication date: 2024-01-23
Anticipated expiration: 2033-08-08

Abstract

The application relates to the technical field of aircrafts, in particular to a swash plate driving assembly and an aircraft. The swash plate drive assembly that this application embodiment provided, including linear drive device and actuating mechanism, linear drive device includes a plurality of different driving medium of size, and a plurality of driving medium are from interior to outside overlapped in proper order and are established the setting, and the driving medium outside that the size is little is located to the driving medium slip cap that the size is big. The driving mechanism is in transmission connection with the transmission piece and drives the transmission piece to move along a straight line. The application also provides an aircraft with the swash plate driving assembly. The arrangement is sleeved outside each transmission part of the swash plate driving assembly of the aircraft, the structure is compact, the occupied space is small, and the arrangement of other structures of the aircraft is facilitated.

Description

Swash plate drive assembly and aircraft

Technical Field

The application relates to the technical field of aircrafts, in particular to a swash plate driving assembly and an aircraft.

Background

The aircraft is generally provided with a plurality of steering engines, the steering engines drive a connecting rod mechanism to move, and the connecting rod mechanism drives a swash plate to periodically and horizontally incline to realize periodic pitch change and total pitch adjustment.

The steering engine is a set of self-control system consisting of a direct current motor, a reduction gear set, a sensor and a control circuit, the reduction gear set converts the 0-360-degree rotary motion of the direct current motor into rotation within the 0-180-degree angle range, and the output angles of different steering engines are controlled to drive the pull rod mechanisms to move by the same or different distances, so that the swash plate is driven to axially move or periodically tilt horizontally.

However, because the existing steering engine is required to be provided with a complex reduction gear set, the whole structure of the steering engine is complex, easy to damage and difficult to maintain, and further the service life of the steering engine is low, and the maintenance cost is high. The reduction gear set has power loss in the power transmission process, so that the whole steering engine is low in efficiency.

The steering engine converts rotation of the steering engine into linear motion through the rocker arm so as to drive the tilting disk to tilt, the rotation angle of the steering engine and the linear motion of the tilting disk are in a nonlinear relationship, and adjustment and fitting are difficult. The scheme also proposes to adopt a plurality of linear drive direct drive sloping cam plates, avoids using link mechanism, reduces the hinge clearance, has improved control accuracy, and its a plurality of linear drive are usually around the rotation axis of rotor a week interval setting in proper order, and the distribution is comparatively dispersed, and the space that occupies is great, is unfavorable for the arrangement of other structural module on the aircraft.

Disclosure of Invention

The present application provides a swash plate drive assembly and an aircraft that effectively address the above-identified and other potential technical issues.

A first aspect of the present application provides a swash plate drive assembly comprising: the linear transmission device comprises a plurality of transmission pieces with different sizes, the transmission pieces are sequentially sleeved from inside to outside, and the transmission piece with a large size is sleeved on the outer side of the transmission piece with a small size in a sliding mode. The driving mechanism is in transmission connection with the transmission piece and drives the transmission piece to move along a straight line.

In an alternative embodiment according to the first aspect, the drive mechanism comprises a number of drive means which is the same as the number of transmission members, such that each transmission member has drive means matching it.

In an alternative embodiment according to the first aspect, a plurality of the drives are arranged in succession in the axial direction of travel of the linear drive, the inner drive element extending beyond the outer drive element for driving connection with the respective drive.

In an alternative embodiment according to the first aspect, the drive mechanism comprises a plurality of nuts having different inner diameters; the number of the nuts is the same as that of the driving devices, each driving device is connected with the transmission piece through one nut, the nuts are in threaded connection with the transmission piece, and the driving devices are in transmission connection with the nuts and drive the nuts to rotate so as to drive the transmission piece to move along the axis direction of the transmission piece.

In an alternative embodiment according to the first aspect, the outer diameters of the plurality of nuts are all the same, and the inner diameters of the plurality of nuts are sequentially reduced in the axial direction of the linear transmission device to be screwed with the corresponding transmission members, respectively.

In an alternative embodiment according to the first aspect, the fixing part of the driving device has a through slot in which the nut is rotatably arranged;

the driving part of the driving device comprises an upper cover body, a first step surface is arranged on the outer wall of the nut, a first bearing is arranged between the nut and the inner wall of the through groove, one end of the first bearing abuts against the first step surface, and the other end of the first bearing abuts against the upper cover body.

In an alternative embodiment according to the first aspect, the nut comprises a first member having an internal thread and a second member, the first bearing being arranged between the first member and an inner wall of the through slot;

the second member is connected to the first member, and a second bearing is provided between the second member and the inner wall of the through groove.

In an alternative embodiment according to the first aspect, the fixed part of the driving device comprises a lower cover;

the outer wall of the second component is provided with a second step surface;

one end of the second bearing abuts against the second step surface, and the other end of the second bearing abuts against the lower cover body.

In an alternative embodiment according to the first aspect, the first member is made of a first material and the second member is made of a second material; and/or the number of the groups of groups,

a first claw disc is arranged at one end of the first member, a second claw disc is arranged at one end of the second member, and the first claw disc is meshed with the second claw disc; and/or the number of the groups of groups,

the driving mechanism comprises an electric adjuster, the second component extends out of the fixing part of the driving device, the electric adjuster is arranged around one end, extending out of the through groove, of the second component, and the electric adjuster is fixed on the fixing part.

The second aspect of the application also provides an aircraft, including aircraft main part and foretell sloping cam plate drive assembly, the aircraft main part includes the sloping cam plate, all of sloping cam plate drive assembly the transmission piece respectively the transmission connect in the sloping cam plate, in order to drive the periodic horizontal slope of sloping cam plate reaches period displacement and collective pitch adjustment.

The arrangement is established to each driving medium internal and external cover of the sloping cam plate drive assembly of aircraft that this application provided, and the structure is compact, and occupation space is little, does benefit to the arrangement of other structures of aircraft.

In an alternative embodiment according to the second aspect, the aircraft comprises a main motor for driving the rotor, the drive mechanism of the swash plate drive assembly is arranged inside the main motor and fixedly connected to the stator of the main motor, and the linear transmission of the swash plate drive assembly extends beyond the main motor.

Additional aspects of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and other objects, features and advantages of embodiments of the present application will become more readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings. Embodiments of the present application will now be described, by way of example and not limitation, in the figures of the accompanying drawings, in which:

FIG. 1 is a schematic view of the overall structure of a swash plate drive assembly and a swash plate provided in an embodiment of the present application at a first perspective;

FIG. 2 is a cross-sectional view of a swash plate drive assembly provided in an embodiment of the present application;

FIG. 3 is a cross-sectional view of a swash plate drive assembly at a drive device provided in an embodiment of the present application;

FIG. 4 is a schematic diagram of the mating structure of the electrical and thermal blocks of the swash plate drive assembly provided in an embodiment of the present application;

FIG. 5 is a schematic diagram of the mating structure of a linear actuator and a nut in a swash plate drive assembly according to an embodiment of the present disclosure;

fig. 6 is a schematic structural view of a nut in a swash plate driving assembly according to an embodiment of the present application.

Reference numerals illustrate:

100. a swash plate drive assembly; 1. a linear transmission device; 11. a transmission member; 2. a driving mechanism; 21. a driving device; 211. rotor housing, 212, permanent magnet poles; 213. an upper cover; 214. a stator sleeve; 215. an upper end cap; 216. a lower cover; 217. a stator coil; 218. a heat conduction block; 219. electrically regulating; 2110. a hall sensor; 22. a nut; 221. a first member; 221a, a first claw disk; 222. a second member; 222a, a second claw disk; 23. a first bearing; 24. a second bearing; 25. a connecting plate; 200. and a swash plate.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

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

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be a mechanical connection; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The aircraft is generally provided with a plurality of steering engines, and the steering engines drive a connecting rod mechanism to move, and the connecting rod mechanism drives the swash plate 200 to periodically and horizontally incline to realize periodic pitch change and total pitch adjustment. But the structure of steering wheel is more complicated, has complicated reduction gear group inside, and reduction gear group is fragile, power loss is big and difficult maintenance, leads to the life of steering wheel low, needs to change regularly.

The steering engine converts rotation of the steering engine into linear motion through the rocker arm so as to drive the tilting disk 200 to tilt, the rotation angle of the steering engine and the linear motion of the tilting disk 200 are in a nonlinear relationship, and adjustment and fitting are difficult. The scheme also proposes to adopt a plurality of linear drive direct drive sloping cam plate 200, avoids using link mechanism, has improved control accuracy, and its a plurality of linear drive are usually around the rotation axis of rotor a week interval setting in proper order, and the distribution is comparatively dispersed, and occupation space is great, is unfavorable for the arrangement of other structural module on the aircraft.

In view of this, the swash plate driving assembly 100 provided in the embodiment of the present application includes a plurality of transmission members 11, each transmission member 11 is sleeved inside and outside, and each transmission member 11 is respectively used for connecting the swash plate 200. Specifically, the driving mechanism 2 can drive each driving member 11 to linearly move, and each driving member 11 cooperates with the swash plate 200 to be pushed to axially move or periodically tilt horizontally to perform periodic pitch variation and collective pitch adjustment. The swash plate drive assembly 100 is compact in structure, small in occupied space and beneficial to arrangement of other structures of an aircraft.

Referring to fig. 1 to 6, an embodiment of the present application provides a swash plate driving assembly 100, where the swash plate driving assembly 100 includes a linear transmission device 1 and a driving mechanism 2, the linear transmission device 1 includes a plurality of transmission members 11 with different sizes, the plurality of transmission members 11 are sequentially sleeved from inside to outside, and the transmission member 11 with a large size is slidably sleeved outside the transmission member 11 with a small size. The driving mechanism 2 is in transmission connection with the transmission member 11, and drives the transmission member 11 to move along a straight line.

The transmission members 11 may have hollow tubular structures, and the different sizes of the transmission members 11 may be understood as different outer diameters of the transmission members 11, and different inner diameters of the transmission members 11. Among the two transmission members 11 adjacent in size, the transmission member 11 with the large outer diameter can be sleeved on the transmission member 11 with the small outer diameter, and can slide along the axial running direction of the transmission member 11 with the small outer diameter.

The swash plate drive assembly 100 of the present embodiment includes a plurality of linearly movable transmission members, avoids the use of a link mechanism, reduces hinge clearances, improves control accuracy, and ensures accurate control of the rotor. The swash plate driving assembly 100 of the aircraft is characterized in that the transmission pieces 11 are sleeved with the transmission pieces, the structure is compact, the occupied space is small, and the arrangement of other structures of the aircraft is facilitated.

In an alternative exemplary embodiment, see fig. 1 and 2, the drive mechanism 2 comprises a plurality of drive means 21, the number of drive means 21 being the same as the number of transmission members 11, so that each transmission member 11 has a matched drive means 21. In particular, in the present embodiment, the driving devices 21 are opposite to the driving members 11 one by one, and each driving device 21 is respectively in driving connection with the corresponding driving member 11 to drive the corresponding driving member 11 to move along a straight line, that is, along the length direction of the driving member 11 or along the axial direction of the driving member 11.

In an alternative exemplary embodiment, as shown in fig. 1 and 2, a plurality of drives 21 are arranged one after the other in the axial direction of travel of the linear drive 1, the inner transmission element 11 extending beyond the outer transmission element 11 for a driving connection with the respective drive 21. In particular, in the present embodiment, since the plurality of transmission members 11 are sequentially sleeved inside and outside, the transmission member 11 with a small outer diameter is covered in the transmission frame with a large outer diameter and cannot be in contact with the corresponding driving device 21. Therefore, in the embodiment of the present application, the transmission member 11 with a small outer diameter is longer, and the transmission member 11 with a large outer diameter can be extended, so as to be in transmission fit with the corresponding driving device 21.

It should be noted that different transmission matching modes can be adopted between the driving device 21 and the transmission member 11, so that the driving device 21 can drive the transmission member 11 to move along a straight line. For example, a matching structure of a gear and a rack can be adopted between the driving device 21 and the transmission member 11, the driving device 21 comprises a gear, the rack is arranged on the transmission member 11, and the driving device 21 drives the gear to rotate so as to drive the transmission bar with the rack to move. The driving device 21 and the transmission member 11 can also adopt a lead screw nut 22 matched structure to realize power transmission.

In an alternative exemplary embodiment, the driving mechanism 2 may include a connection plate 25, and the connection plate 25 is connected to each of the driving devices 21. The respective driving devices 21 may be integrally connected by the connection plate 25. The driving device 21 may include a brushless motor, and in this case, the connection plate 25 connects and fixes stator assemblies of the respective brushless motors. The brushless motor of this embodiment may be a hollow cup type outer rotor brushless motor, a plurality of brushless motors are coaxially arranged in series, and two adjacent brushless motors are fixedly connected.

Wherein, outer rotor brushless motor is flat structure, and its outside diameter is great to lead to its progression height, moment of inertia is big, steady operation, and the outer rotor brushless motor of this embodiment adopts hollow cup formula, through the middle hollow department of wearing to locate brushless motor with driving medium 11 for overall structure is compact, the degree of integrating is high, the dismouting of being convenient for, and the reliability is strong.

In an alternative exemplary embodiment, referring to fig. 2 and 5, the driving mechanism 2 includes a plurality of nuts 22 having different inner diameters, the number of the nuts 22 is the same as the number of the driving devices 21, each driving device 21 is connected to the transmission member 11 through one nut 22, the nuts 22 are screwed to the transmission member 11, and the driving device 21 is in driving connection with the nuts 22 to rotate the nuts 22 so as to drive the transmission member 11 to move along the axial direction thereof. In particular, in the present embodiment, a screw nut 22 is adopted between the driving device 21 and the transmission member 11 to convert the rotational motion of the driving device 21 into the translational motion of the transmission member 11. The movement direction of the transmission member 11 can be controlled by controlling the rotation direction of the nut 22, and the movement distance of the transmission member 11 can be controlled by controlling the rotation speed of the nut 22.

It should be noted that the internal thread of the nut 22 and the external thread of the transmission member 11 may be T-shaped threads. The internal thread and the external thread are tightly attached by conical surfaces, and the self-locking property is good. When the driving device 21 stops working, self-locking can be realized between the nut 22 and the transmission piece 11, so that the adjustment precision and accuracy of the swash plate 200 in total distance adjustment and period variable distance adjustment are ensured.

In an alternative exemplary embodiment, referring to fig. 2 and 3, the outer diameters of the plurality of nuts 22 are the same, and the inner diameters of the plurality of nuts 22 are sequentially reduced in the axial direction of the linear driving device 1 to be screwed with the corresponding driving members 11, respectively. In the present embodiment, the threaded holes of the nuts 22 are disposed coaxially, and the linear transmission device 1 entirely penetrates each nut 22, and each nut 22 is respectively screwed on the corresponding transmission member 11. The outer diameters of the nuts 22 are the same, and the driving devices 21 are identical in structure, so that the outer diameters of the nuts 22 do not need to be changed in an adaptive manner. The inner diameter of each nut 22 is different to match the outer diameter of the corresponding driving member 11, respectively.

In an alternative exemplary embodiment, the fixing portion of the driving device 21 has a through slot, the nut 22 is rotatably disposed in the through slot, the driving portion of the driving device 21 includes an upper cover 213, a first step surface is disposed on an outer wall of the nut 22, a first bearing 23 is disposed between the nut 22 and an inner wall of the through slot, one end of the first bearing 23 abuts against the first step surface, and the other end of the first bearing 23 abuts against the upper cover 213. In particular, in the present embodiment, the driving device 21 may be a brushless motor, and the fixing portion of the driving device 21 may be a stator assembly of the brushless motor, and the stator assembly may include a stator sleeve 214, a stator coil 217 and a lower end cover. The driving part of the driving device 21 may be a rotor assembly of a brushless motor. The rotor assembly may include a rotor housing 211, permanent magnet poles 212, and a cover. Wherein the permanent magnet poles 212 are provided on the inner wall of the rotor housing 211. The cover is fixedly connected to the rotor housing 211, and the stator coil 217 is disposed in the rotor housing 211 and is fixedly connected to the outer periphery of the stator sleeve 214. The stator shaft sleeves 214 of the adjacent brushless motors are fixedly connected, and the linear transmission device 1 is arranged in the stator shaft sleeves 214 of the plurality of brushless motors in a penetrating way and is connected with the cover of the corresponding brushless motor. The stator sleeve 214 may have a through slot that facilitates the placement of the nut 22 within the stator assembly without occupying an external space.

It can be appreciated that in the embodiment of the present application, the transmission member 11 is inserted into the stator shaft sleeve 214, so that the transmission member is used as an actuating element to drive the swash plate 200 to move through its axial movement, and the transmission member is used to provide support for the tandem structure of the plurality of driving devices 21, so that the flexure resistance of the tandem driving devices 21 is enhanced, and the overall structure is more stable and firm.

The upper cover 213 may be a cover of the rotor assembly. The nut 22 is connected to the fixed portion through the first bearing 23, which reduces the resistance to rotation of the nut 22 and reduces wear. The number of the first bearings 23 may be two, and the first bearings 23 may be deep groove ball bearings. The two first bearings 23 are sequentially arranged along the axis direction of the nut 22, and are respectively sleeved on the nut 22. One end of the first bearing 23 abuts against the first step surface, and the driving device 21 further comprises an upper end cover 215, wherein the upper end cover 215 is fixedly connected with the fixing portion through a bolt. The other end of the first bearing 23 abuts against the upper cover 213 and the upper cover 215. The two first bearings 23 are used for bearing the axial force and the radial force borne by the nut 22. The driving device 21 includes a fastener, one end of which passes through the upper cover 213 and is connected to the nut 22, so as to connect and fix the nut 22 and the upper cover 213. The fastener may be a bolt.

When the device is specifically used, the corresponding coils of the stator coil 217 of the brushless motor are electrified to generate a magnetic field, and the permanent magnet magnetic poles 212 are rotated relatively under the action of the magnetic force of the stator coil 217 according to the principle that like poles repel and unlike poles attract, so that the rotor housing 211 and a cover fixedly connected with the rotor housing 211 are driven to rotate synchronously, and the cover drives the corresponding nut 22 to rotate to drive the transmission piece 11 to perform linear motion.

In this embodiment, the permanent magnet pole 212 may include a plurality of columns of magnetic steels, and the magnetic properties of two adjacent columns of magnetic steels are opposite. A plurality of rows of mounting grooves are correspondingly formed in the rotor housing 211, and a plurality of rows of magnetic steels are respectively inserted into the plurality of rows of mounting grooves and adhered to the inner wall of the rotor housing 211. The winding of the stator coil 217 needs to be determined according to the polarity of the corresponding magnetic pole, so as to ensure that the magnetism generated after the coil is electrified is the same as the magnetism of the corresponding magnetic steel, and further realize the rotation of the rotor housing 211.

Referring to fig. 1 and 2, the stator shaft sleeves 214 of adjacent brushless motors can be fixedly connected through the connecting plate 25 so as to form a serial structure by stringing a plurality of brushless motors, the stator shaft sleeves 214 are hollow shaft structures, and the nuts 22 are threaded in the stator shaft sleeves 214, so that the hollow structure of the stator shaft sleeves 214 is effectively utilized, and the whole structure is compact and the integration degree is high.

In an alternative exemplary embodiment, weight-reducing holes are provided in the cover and stator sleeve 214, respectively, for reducing the overall weight of the brushless motor. The cover corresponds with the position of the lightening hole on the stator shaft sleeve 214 to form an axial flow channel, and the lightening hole can be used as a vent hole, so that air flows through the flow channel to form air flow, the flowing air flow cools the brushless motor, the brushless motor is prevented from being damaged at high temperature, and the service life of the brushless motor is prolonged.

In an alternative exemplary embodiment, referring to fig. 3, 5 and 6, the nut 22 includes a first member 221 and a second member 222, the first member 221 having an internal thread, the first bearing 23 being disposed between the first member 221 and an inner wall of the through groove, the second member 222 being coupled to the first member 221, and the second bearing 24 being disposed between the second member 222 and the inner wall of the through groove. In particular, in the present embodiment, the nut 22 may be formed by two members, the first member 221 has an internal thread, and the second member 222 may not have an internal thread. The first component 221 is connected with the cover of the brushless motor, the second component 222 is of a thin-wall sleeve structure, the thickness of the second component 222 can be thinner than that of the first component 221, the second component 222 can rotate synchronously with the cover and the first component 221, the weight of the nut 22 is reduced, and further the whole weight of the brushless motor is reduced, so that the development requirement of light weight of an aircraft is met.

The first member 221 is made of a first material, and the second member 222 is made of a second material. The first material may be a material having high abrasion resistance, high hardness, and high cost. For example, the first material may be copper, aluminum, steel, iron, and the like. The second material may be the same as the first material, and the second material may be different from the first material, for example, when the first material is copper, the second material may be any one of aluminum, steel and iron, so as to achieve the purpose of reducing cost without affecting performance and durability.

In an alternative exemplary embodiment, referring to fig. 3, the fixing portion of the driving device 21 includes a lower cover 216, and the lower cover 216 may be fixed to the stator bushing by a fastener. The outer wall of the second member 222 is provided with a second step surface, one end of the second bearing 24 abuts against the second step surface, and the other end of the second bearing 24 abuts against the lower cover 216. In particular, in the present embodiment, when the driving device 21 is a brushless motor, the lower cover 216 may be fixedly connected to the stator sleeve 214 of the stator assembly through bolts.

In an alternative exemplary embodiment, the first member 221 and the second member 222 are connected, and the first member 221 and the second member 222 can rotate in synchronization. It should be noted that, the fixing connection manner of the first member 221 and the second member 222 may be any one of bolting, keyway connection, threaded connection, bonding or welding, and any connection manner that ensures that the second member 222 can rotate synchronously with the first member 221 is within the scope of protection of the present application. For example, referring to fig. 5 and 6, a first claw disc 221a is provided at one end of the first member 221, a second claw disc 222a is provided at one end of the second member 222, and the first claw disc 221a and the second claw disc 222a are engaged. The first and second claw discs 221a and 222a are positioned to ensure coaxiality of the first and second members 221 and 222, so as to facilitate disassembly and assembly. In this embodiment, a key slot connection manner is adopted between the first member 221 and the second member 222, the connection ends of the first member 221 and the second member 222 are respectively provided with a claw disc, the claw discs are in a protruding and groove structure which are alternately arranged, the protruding of the first member 221 can be clamped in the groove of the second member 222, and then the claw discs of the first member 221 and the second member 222 are mutually buckled so as to circumferentially connect the first member 221 and the second member 222. In the axial direction, the first member 221 and the second member 222 are axially positioned by the cover, the bearing, and the lower cover 216 so as not to move in the axial direction, thereby achieving a fixed connection of the first member 221 and the second member 222. The connection mode of the first component 221 and the second component 222 in this embodiment belongs to a building block structure, and is easy to assemble and disassemble and convenient to maintain.

In an alternative exemplary embodiment, referring to fig. 3 and 4, the driving mechanism 2 includes an electric motor 219, the second member 222 protrudes from a fixing portion of the driving device 21, the electric motor 219 is disposed around an end of the second member 222 protruding from the through slot, and the electric motor 219 is fixed to the fixing portion. In particular, in the present embodiment, the electric power adjuster 219 may be annular and sleeved outside the second member 222. When the drive means 21 comprises a brushless motor, the electric motor 219 is fixed to the stator hub 214 of the stator assembly. The input end of the electric power regulator 219 is connected with a power supply, and the output end of the electric power regulator 219 is electrically connected with the brushless motor. The control device is used for controlling the start and stop, the rotating speed and the rotating direction of the corresponding brushless motor.

Referring to fig. 3 and 4, the driving device 21 further includes a heat conducting block 218, and the heat conducting block 218 is disposed between the electric motor 219 and the stator sleeve 214 of the brushless motor. The electric regulator 219 is also connected with the stator shaft sleeve 214 in a heat conduction way through the heat conduction block 218, and heat generated during the operation of the electric regulator 219 is transmitted to the stator shaft sleeve 214 in a heat conduction way, so that the electric regulator 219 is prevented from being too high in temperature, and the stability and the service life of the electric regulator 219 are ensured. The hall sensor 2110 is disposed on the electric motor 219, and a magnetic disk is disposed at an end of the second member 222 extending out of the inner cavity of the motor. The provision of the second member 222 is seen to facilitate the mounting of the disc. The disk is spaced from the hall sensor 2110 and can rotate in synchronism with the nut 22. The magnetic disk may be of a split structure, and is fixed on the periphery of the second member 222 by bolts, and the hall sensor 2110 indirectly monitors the rotation speed and rotation position of the brushless motor by monitoring the rotation speed and position of the magnetic disk in real time, so that the fault position and fault cause of the brushless motor can be judged according to the detected real-time data.

As an example, referring to fig. 1 and 2, the driving mechanism 2 of the present embodiment may include three brushless motors, and the number of corresponding transmission members 11 is also 3. The 3 driving members 11 are respectively connected with the swash plate 200, and the connection positions of the 3 driving members 11 and the swash plate 200 are arranged at an angle of 120 degrees. The 3 brushless motors drive the swash plate 200 together to perform total distance and period distance changing adjustment, the braking force of the motor is three times that of a traditional cross disc, three times of power assistance is also obtained for the rotor in the same way, and the burden of each brushless motor 1 is smaller and the control accuracy is higher. According to the embodiment of the application, the brushless motor directly drives the transmission piece 11 to drive the swash plate 200 to move, the existing steering engine structure is replaced, the structure is simple, the transmission efficiency is high, the power loss is small, the maintenance is convenient, and the device is more suitable for driving the swash plate 200 to perform total distance and period variable distance adjustment.

The application also provides an aircraft, including aircraft main part and foretell sloping cam plate drive assembly 100, the aircraft main part includes sloping cam plate 200, all of sloping cam plate drive assembly 100 the transmission piece 11 respectively the transmission connect in sloping cam plate 200 to the drive sloping cam plate 200 periodically horizontal slope reaches cycle displacement and collective pitch adjustment.

The linear transmission device of the swash plate driving assembly 100 of the aircraft is composed of a plurality of transmission pieces capable of moving linearly, a connecting rod mechanism is avoided, hinge gaps are reduced, control precision is improved, and accurate control of a rotor wing is ensured. The swash plate driving assembly 100 of the aircraft is characterized in that the transmission pieces 11 are sleeved with the transmission pieces, the structure is compact, the occupied space is small, and the arrangement of other structures of the aircraft is facilitated. The swash plate driving assembly 2 has the advantages of simple structure, high integration degree, strong stability, difficult damage, light overall weight and more contribution to the development requirements of miniaturization and light weight of the electric aircraft.

In an alternative exemplary embodiment, the aircraft includes a main motor for driving the rotor, the driving mechanism 2 of the swash plate driving assembly 100 is disposed inside the main motor and fixedly connected to a stator of the main motor, and the linear transmission device 1 of the swash plate driving assembly 100 protrudes from the main motor. In particular, in this embodiment, the driving mechanism 2 of the swash plate driving assembly 100 and a part of the structure of the linear transmission device 1 are disposed inside the main motor of the aircraft, so that the space of the main motor is fully utilized, the overall structure is compact, and the arrangement of other structural modules of the aircraft is facilitated.

When the aircraft with the swash plate driving assembly 100 needs to perform collective pitch adjustment, the driving devices 21 are controlled to rotate in the same direction, the rotation time and the rotation speed are the same, the driving devices 21 drive the driving members 11 to move linearly, and the linear movement distances of the driving members 11 are the same, so that the swash plate 200 is pushed to move axially, and the collective pitch adjustment of the rotor is realized.

When the periodic pitch adjustment is needed, at least one of the driving devices 21 is controlled to rotate in the opposite direction, the rest driving devices 21 rotate in the same direction, the linear movement distances of the driving devices 21 are different, and the swash plate 200 is periodically and horizontally inclined to realize the periodic pitch adjustment of the rotor wing.

It can be understood that, the swash plate driving assembly 2 of this embodiment directly drives the transmission member 11 to linearly move through the brushless motor, so that the swash plate 200 can be driven to periodically tilt horizontally or axially move, the functions of total distance adjustment and periodic distance change adjustment are achieved, the brushless motor is high in self efficiency and low in energy consumption, the linear transmission device 1 is simple in structure and low in power consumption, and compared with the existing steering engine structure, the swash plate driving assembly 100 of this embodiment is simpler in structure, low in power consumption, low in failure rate and convenient to maintain.

Finally, it should be noted that: the above embodiments are merely for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the various possible combinations are not described further.

Claims

1. A swash plate drive assembly, comprising:

the linear transmission device comprises a plurality of transmission pieces with different sizes, the transmission pieces are sequentially sleeved from inside to outside, and the transmission piece with a large size is sleeved on the outer side of the transmission piece with a small size in a sliding manner; the method comprises the steps of,

the driving mechanism is in transmission connection with the transmission piece and drives the transmission piece to move along a straight line.

2. A swash plate drive assembly as claimed in claim 1, wherein the drive mechanism includes a plurality of drive means, the number of drive means being the same as the number of transmission members, such that each transmission member has a matched drive means.

3. A swash plate drive assembly according to claim 2, wherein a plurality of said drive means are arranged in series along the axial direction of travel of said linear transmission means, the inner said transmission member extending beyond the outer said transmission member for driving connection with the respective said drive means.

4. The swash plate drive assembly of claim 2, wherein the drive mechanism includes a plurality of nuts having different inner diameters; the number of the nuts is the same as that of the driving devices, each driving device is connected with the transmission piece through one nut, the nuts are in threaded connection with the transmission piece, and the driving devices are in transmission connection with the nuts and drive the nuts to rotate so as to drive the transmission piece to move along the axis direction of the transmission piece.

5. The swash plate drive assembly of claim 4, wherein the plurality of nuts have the same outer diameter, and the inner diameters of the plurality of nuts are sequentially reduced in the axial direction of the linear transmission device to be screwed with the corresponding transmission members, respectively.

6. The swash plate drive assembly of claim 4, wherein the fixed portion of the drive device has a through slot, the nut being rotatably disposed within the through slot;

7. The swash plate drive assembly of claim 6, wherein the nut includes a first member having internal threads and a second member, the first bearing being disposed between the first member and an inner wall of the through slot;

8. The swash plate drive assembly of claim 7, wherein the fixed portion of the drive device includes a lower cover;

the outer wall of the second component is provided with a second step surface;

9. The swash plate drive assembly of claim 7, wherein the first member is made of a first material and the second member is made of a second material; and/or the number of the groups of groups,

10. An aircraft comprising an aircraft body and a swash plate drive assembly according to any one of claims 1 to 9, the aircraft body comprising a swash plate, all of the transmission members of the swash plate drive assembly being respectively drivingly connected to the swash plate.

11. The aircraft of claim 10, comprising a main motor for driving the rotor; the driving mechanism of the swash plate driving assembly is arranged inside the main motor and fixedly connected with the stator of the main motor, and the linear transmission device of the swash plate driving assembly extends out of the main motor.