Three-phase wire bushing, tilting device and rotor craft

Abstract

The utility model provides a three-phase wire sheath, a tilting device and a rotorcraft, the wire sheath main body of the three-phase wire sheath is of a flat structure, and three wiring pipelines are arranged in parallel at intervals, so that three-phase wires can be respectively arranged in the three wiring pipelines at intervals, and the risk of contact short circuit can be effectively avoided; the middle section of the wire sleeve main body is provided with a bending function area, and at least one of the upper surface and the lower surface of the bending function area is provided with a plurality of deep cutting structures which are arranged at intervals along the extension direction of the wire sleeve main body, so that the bending area is not easy to generate extrusion stress during bending, and the bending fatigue influence on a three-phase wire arranged in the bending area can be reduced. According to the three-phase line bushing provided by the utility model, the bending directions of the three-phase line can be positioned in the same direction, the risk of contact short circuit is reduced, the bending fatigue influence of the bushing on the three-phase line can be reduced, and the service life and the safety of the three-phase line are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary-wing aircraft, in particular to a three-phase line protective sleeve, a tilting device and a rotary-wing aircraft. Background Art

[0002] The power system and control system of the tilt-rotor UAV are relatively advanced, with high energy efficiency and stability, and can achieve a longer flight endurance. In addition, the maneuverability and flight performance of the tilt-rotor UAV are also better than those of multi-rotor aircraft, and can achieve more flexible control and movement in the air.

[0003] The drive motor of the rotor is generally a three-phase motor, and its drive cables are provided with three. In the prior art, the three cables are arranged separately, and the outer insulation layer of the cables is easily damaged by aging, external mechanical damage, etc. After the insulation layer is damaged, during the tilt control of the rotor, the three single-strand cables will move irregularly, which is prone to the risk of short circuit. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a three-phase line protective sleeve, a tilting device and a rotorcraft, so as to solve the problem of insufficient safety of electrical wiring of a rotor-tiltable aircraft in the prior art.

[0005] The utility model provides a three-phase line protection sleeve on one hand, which comprises: a sleeve body and a first joint and a second joint arranged at two ends of the sleeve body, wherein:

[0006] The wire sleeve body is a flat structure, and three through holes are arranged in parallel and spaced apart along the flat surface of the flat structure to form three wiring pipelines arranged in parallel;

[0007] The first connector and the second connector are each provided with three through holes, and are connected to the three wiring pipelines in a one-to-one correspondence;

[0008] A bending functional area is provided in the middle section of the wire sleeve body, and at least one of the upper surface and the lower surface of the bending functional area is provided with a plurality of deep cut structures arranged at intervals along the extension direction of the wire sleeve body, and the cutting depth of the deep cut structure extends into the tube of the wiring pipeline.

[0009] Optionally, mounting holes are further provided on both sides of the first joint, and an extending direction of the mounting holes is perpendicular to an extending direction of the through hole in the first joint.

[0010] Optionally, the second joint is an I-shaped joint.

[0011] The utility model provides a tilting device for controlling the tilt angle of aerodynamic direction of a UAV rotor, wherein the tilting device comprises a fixed arm and a driving arm connected in a rotating manner, wherein:

[0012] A servo steering gear is fixedly arranged in the fixed arm, a first end of the driving arm is transmission-connected to the servo steering gear, and a second end of the driving arm is connected to a motor mounting seat;

[0013] The above-mentioned three-phase wire sheath is arranged between the fixed arm and the motor mounting seat, and the first connector and the second connector of the three-phase wire sheath are respectively connected to the fixed arm and the motor mounting seat.

[0014] Optionally, the driving arm includes a left driving arm and a right driving arm arranged on both sides of the fixed arm, one end of the left driving arm and the right driving arm is transmission-connected to the servo steering gear, and the other end is fixedly connected to the motor mounting base.

[0015] Optionally, one of the left driving arm and the right driving arm is transmission-connected to the power output end of the servo steering gear output shaft, and the other is rotationally connected to the other end of the output shaft via a bearing.

[0016] Optionally, one of the left driving arm and the right driving arm is fixedly connected to the power output end of the output shaft through a steering wheel, and the other is fixedly connected to the outer ring of the bearing through an adapter ring.

[0017] Optionally, the fixed arm includes an upper shell and a lower shell to form an installation space between the upper shell and the lower shell, and the servo actuator is fixedly arranged in the installation space. The side walls of the upper shell and the lower shell are also provided with matching semicircular openings to form an axial hole on the side walls of the installation space, and the output shaft of the servo actuator extends from the axial hole.

[0018] Optionally, a fixing member is further provided in the installation space, and the fixing member and the servo actuator are sequentially arranged along the axial direction of the fixed arm, and the servo actuator is fixedly connected to the fixing member.

[0019] On one hand, the utility model provides a rotorcraft, which comprises the above-mentioned tilting device, and a rotor driving motor is arranged on the motor mounting seat of the tilting device.

[0020] The three-phase wire protection sleeve provided by the utility model comprises: a wire sleeve body and a first joint and a second joint arranged at both ends of the wire sleeve body, wherein the wire sleeve body is a flat structure, and three through holes are arranged in parallel and spaced apart along the flat surface of the flat structure to form three-way wiring pipelines arranged in parallel, so that the three-phase wires can be respectively arranged in the three-way wiring pipelines, and the bending directions of the three-phase wires are synchronized during bending, which can effectively reduce the risk of short circuit caused by mutual contact of the three-phase wires; the first joint and the second joint are both provided with three through holes, and correspond one to one with the three-way wiring pipelines. The three-way through holes are synchronously arranged in the joint, which can further avoid the risk of contact short circuit; a bending functional area is arranged in the middle section of the wire sleeve body, and at least one of the upper surface and the lower surface of the bending functional area is provided with a plurality of deep-cut structures arranged at intervals along the extension direction of the wire sleeve body, and the cutting depth of the deep-cut structure extends to the inside of the wiring pipeline, so that during bending, the inner and outer wires of the wire sleeve are not easy to generate extrusion stress in the bending area, thereby reducing the bending fatigue effect on the three-phase line arranged therein, and ensuring the service life and safety of the three-phase line. The three-phase wire sleeve provided by the utility model can position the bending direction of the three-phase line in the same direction, reduce the risk of contact short circuit, and reduce the bending fatigue effect of the wire sleeve on the three-phase line, thereby ensuring the service life and safety of the three-phase line.

[0021] The tilting device provided by the utility model includes the above-mentioned three-phase line wire protection sleeve, which can reduce the risk of contact short circuit in the three-phase line during tilting control, and can reduce the bending fatigue effect of the wire protection sleeve on the three-phase line, thereby ensuring the service life and safety of the three-phase line, and thus improving the service life of the tilting device.

[0022] The rotorcraft provided by the utility model includes the above-mentioned tilting device, which can increase the risk of contact short circuit of the three-phase line of the driving motor during tilting control, and can reduce the bending fatigue effect of the wire sheath on the three-phase line, thereby ensuring the service life and safety of the three-phase line, and further improving the reliability and service life of the rotorcraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the three-phase wire protection sleeve in the utility model;

[0024] Figure 2 It is a structural schematic diagram of the tilting device in the utility model;

[0025] Figure 3 It is a schematic diagram of the explosion structure of the tilting device in the utility model.

[0026] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] In order to solve the problem of insufficient safety of electrical wiring of a tiltable rotor aircraft in the prior art, the utility model provides a three-phase wire protection sleeve, such as Figure 1 As shown, it includes a wire sleeve body 10 and a first connector 11 and a second connector 12 arranged at both ends of the wire sleeve body 10, wherein the wire sleeve body 10 is a flat structure, and three through holes are arranged in parallel and spaced apart along the flat surface of the flat structure to form three-way wiring pipelines arranged in parallel, the first connector 11 and the second connector 12 are both provided with three through holes, and are connected to the three-way wiring pipelines one by one, so that the three-phase cables can be arranged in the three-way wiring pipelines respectively, and arranged at intervals, which can effectively avoid the risk of contact short circuit between the three-phase cables, and the cables are led out from the through holes of the first interface 11 and the second interface 12, which can ensure the directionality of the lead-out wires, avoid complete damage to the cables at the connection points, and effectively ensure the protection effect of the cables.

[0031] A bending functional area is provided in the middle section of the wire sleeve body 10, and at least one of the upper surface and the lower surface of the bending functional area is provided with a plurality of deep cut structures 101 arranged at intervals along the extension direction of the wire sleeve body 10, and the cutting depth of the deep cut structure 101 extends into the pipe of the wiring pipeline. When bending, in the bending functional area, the stroke of the inner folding surface and the outer folding surface of the wire sleeve body 10 can be changed by the setting of the deep cut structure 101, thereby avoiding the wire sleeve body 10 from forming extrusion stress on the cable therein, reducing the metal fatigue generated by the cable during bending, thereby increasing the service life of the cable, and reducing the friction between the cable and the wire sleeve body 10, reducing the wear of the outer insulation layer of the cable, and improving the protection effect.

[0032] To ensure the structural reliability of the wire sleeve body 10, in this embodiment, the upper and lower surfaces of the bending functional area are both provided with a deep cut structure 101, and the sum of the upper and lower cutting depths is less than the thickness of the wire sleeve body 10, so as to retain the continuity of the wire sleeve body 10 and maintain its ability to hold the cable in position.

[0033] To facilitate installation, in the present embodiment, mounting holes 111 are further provided on both sides of the first connector 11, and the extension direction of the mounting holes 111 is perpendicular to the extension direction of the through hole in the first connector 11, that is, the cable led out (or connected) from the first connector 11 can be arranged horizontally, and the counterpart for fixing the first connector 11 can be arranged above or below the first interface 11 to avoid obstruction of the cable arrangement and facilitate cable wiring.

[0034] The first connector 11 is mainly connected to the output line of the electronic speed regulator, and the second connector 12 is used to output wiring to the motor. The first connector 11 generally needs to be pre-fixed and assembled, and a mounting hole 111 is provided therein to facilitate pre-fixing it on the counterpart. In the present embodiment, to facilitate the installation of the second connector 12, it is an I-shaped connector, and the installation does not require screw connection operation, which can improve the installation efficiency and facilitate the realization of modular design.

[0035] The utility model also provides a tilting device for controlling the tilt angle of the aerodynamic direction of the UAV rotor, such as Figure 2 and Figure 3 As shown, the tilting device includes a fixed arm 20 and a driving arm 30 which are rotatably connected, wherein a servo actuator 50 is fixedly arranged in the fixed arm 20, a first end of the driving arm 30 is transmission-connected to the servo actuator 50, and a second end of the driving arm 30 is connected to a motor mounting seat 40; the above-mentioned three-phase wire sheath is arranged between the fixed arm 20 and the motor mounting seat 40, and a first joint 11 and a second joint 12 of the three-phase wire sheath are respectively connected to the fixed arm 20 and the motor mounting seat 40, and a wire sheath body 10 of the three-phase wire sheath is exposed.

[0036] For the convenience of installation, in the present embodiment, the driving arm 30 includes a left driving arm and a right driving arm arranged on both sides of the fixed arm 20. One end of the left driving arm and the right driving arm are connected to the servo steering gear 50 by transmission, and the other end is fixedly connected to the motor mounting seat 40. With the output of the servo steering gear 50, the driving arm 30 rotates, thereby driving the axial tilting of the motor mounting seat 40. The driving motor of the rotor is installed on the motor mounting seat 40, which can realize the aerodynamic tilting of the rotor and the rotation of the rotor in the same manner as described above. Figure 2 Taking the posture in as an example, the aerodynamic direction is the vertical direction.

[0037] Depending on the model of the servo actuator, the drive connection method will be different. When the servo actuator 50 is a single-end output, correspondingly, one of the left drive arm and the right drive arm is transmission-connected to the power output end of the output shaft 51 of the servo actuator 50, and the other is rotationally connected to the other end of the output shaft 51 through a bearing. One of the left drive arm and the right drive arm is active and the other is driven, which can avoid the interference of the torque difference of multiple outputs on the consistency of the drive arms, thereby ensuring the reliability of the tilt drive.

[0038] In a specific example, one of the left driving arm and the right driving arm is fixedly connected to the power output end of the output shaft 51 through a steering plate, and the other is fixedly connected to the outer ring of the bearing 51 through an adapter ring 52. When driven by the servo steering gear 50, the left driving arm is directly driven to rotate, and then the right driving arm is driven to rotate around the output shaft 51 through the transmission path of the left driving arm-motor mounting seat 40-right driving arm. In this embodiment, the steering plate and the adapter ring 52 are four-hole flange structures, which can ensure the reliability of the fixed connection. Different connectors can be selected according to specific needs.

[0039] For easy installation, in this embodiment, the fixed arm 20 includes an upper shell 21 and a lower shell 22, so as to form an installation space between the upper shell 21 and the lower shell 22, and the servo actuator 50 is fixedly arranged in the installation space. The side walls of the upper shell 21 and the lower shell 22 are also provided with semicircular openings that match each other, so that after docking, an axis hole is formed on the side wall of the installation space, and the output shaft 51 of the servo actuator 50 extends out of the axis hole. In an optional embodiment, the driving arm is arranged inside, and the fixed arm is clamped and arranged outside the driving arm.

[0040] The first connector 11 of the three-phase cable sheath can be pre-fixed to the upper shell 21 or the lower shell 22 by threaded connection. In the present embodiment, it is fixed to the upper shell 21 .

[0041] To facilitate the installation of the tilt device to the aircraft body or arm, in the present embodiment, a fixing part 60 is further provided in the installation space. The fixing part 60 and the servo actuator 50 are sequentially arranged along the axial direction of the fixed arm 20, and the servo actuator 50 is fixedly connected to the fixing part 60. During installation, the housing of the fixed arm 20 and the fixing part 60 can be respectively docked and fixed to the counterpart, which can effectively improve the reliability of the fixation.

[0042] The utility model also provides a rotorcraft, which comprises the tilting device described above, wherein a rotor driving motor is arranged on a motor mounting seat of the tilting device.

[0043] The three-phase wire protection sleeve, tilting device and rotorcraft provided by the utility model can effectively reduce the risk of contact short circuit in the three-phase wire of the rotor drive motor, and can reduce the bending fatigue effect of the wire protection sleeve on the three-phase wire, thereby ensuring the service life and safety of the three-phase wire, thereby improving the reliability and service life of the rotorcraft with the rotor capable of tilting in the aerodynamic direction, and providing convenience for the development of the rotorcraft with the rotor capable of tilting in the aerodynamic direction.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] The above-mentioned embodiments only express several specific implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A three-phase line sheath, characterized in that: include: A wire sleeve body and a first joint and a second joint provided at two ends of the wire sleeve body, wherein: The wire sleeve body is a flat structure, and three through holes are arranged in parallel and spaced apart along the flat surface of the flat structure to form three wiring pipelines arranged in parallel; The first connector and the second connector are each provided with three through holes, and are connected to the three wiring pipelines in a one-to-one correspondence; A bending functional area is provided in the middle section of the wire sleeve body, and at least one of the upper surface and the lower surface of the bending functional area is provided with a plurality of deep cut structures arranged at intervals along the extension direction of the wire sleeve body, and the cutting depth of the deep cut structure extends into the tube of the wiring pipeline.

2. The three-phase cable sheath according to claim 1, characterized in that: Mounting holes are also provided on both sides of the first joint, and the extending direction of the mounting holes is perpendicular to the extending direction of the through hole in the first joint.

3. The three-phase cable sheath according to claim 1, characterized in that: The second joint is an I-shaped joint.

4. A tilting device for controlling the tilt angle of the aerodynamic direction of the rotor of a UAV, characterized in that: The tilting device comprises a fixed arm and a driving arm which are rotatably connected, wherein: A servo steering gear is fixedly arranged in the fixed arm, a first end of the driving arm is transmission-connected to the servo steering gear, and a second end of the driving arm is connected to a motor mounting seat; The three-phase wire sheath according to any one of claims 1 to 3 is arranged between the fixing arm and the motor mounting seat, and the first connector and the second connector of the three-phase wire sheath are respectively connected to the fixing arm and the motor mounting seat.

5. The tilting device according to claim 4, characterized in that: The driving arm comprises a left driving arm and a right driving arm which are arranged on both sides of the fixed arm. One end of the left driving arm and the right driving arm are transmission-connected to the servo steering gear, and the other end is fixedly connected to the motor mounting seat.

6. The tilting device according to claim 5, characterized in that: One of the left driving arm and the right driving arm is transmission-connected to the power output end of the servo steering engine output shaft, and the other is rotationally connected to the other end of the output shaft through a bearing.

7. The tilting device according to claim 6, characterized in that: One of the left driving arm and the right driving arm is fixedly connected to the power output end of the output shaft through a steering plate, and the other is fixedly connected to the outer ring of the bearing through an adapter ring.

8. The tilting device according to claim 4, characterized in that: The fixed arm includes an upper shell and a lower shell to form an installation space between the upper shell and the lower shell. The servo actuator is fixedly arranged in the installation space. The side walls of the upper shell and the lower shell are also provided with matching semicircular openings to form an axial hole on the side walls of the installation space. The output shaft of the servo actuator extends from the axial hole.

9. The tilting device according to claim 8, characterized in that: A fixing piece is also arranged in the installation space. The fixing piece and the servo steering engine are arranged in sequence along the axial direction of the fixing arm, and the servo steering engine is fixedly connected to the fixing piece.

10. A rotary-wing aircraft, characterized in that: It comprises a tilting device according to any one of claims 4 to 9, wherein a rotor drive motor is arranged on a motor mounting seat of the tilting device.

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