CN110816825A - Directional locking mechanism of screw - Google Patents

Abstract

The invention relates to the technical field of unmanned aerial vehicles, in particular to a directional locking mechanism for a propeller. Including screw, motor axis of rotation, motor fixing support, magnet fixing support of motor, fix first magnet of multiunit on the motor fixing support and fixing multiunit second magnet on the magnet fixing support, when the motor stall or be close the stall, first magnet with the different magnetic pole of second magnet attracts mutually, directional locking the position of screw. The composite wing unmanned aerial vehicle rotor propeller locking device is simple in structure, can lock the composite wing unmanned aerial vehicle rotor propeller at a position consistent with a cruising direction when cruising, reduces flight resistance, and increases cruising time and range of an airplane.

Description

Directional locking mechanism of screw

Technical Field

The invention relates to the technical field of unmanned aerial vehicles, in particular to a directional locking mechanism for a propeller.

Background

The compound wing VTOL unmanned aerial vehicle is a pneumatic layout unmanned aerial vehicle that stationary vane and rotor combined together, has solved the difficult problem of stationary vane unmanned aerial vehicle VTOL through simple mode. Have the advantage of fixed wing unmanned aerial vehicle long-term time of navigating, high speed, big voyage and rotor unmanned aerial vehicle VTOL concurrently, these characteristics make composite wing unmanned aerial vehicle have comparatively extensive application prospect. The demand for the composite wing vertical take-off and landing unmanned aerial vehicle in the fields of petroleum pipeline inspection, electric power line inspection, forest fire prevention and the like is increasingly urgent.

Composite wing unmanned aerial vehicle on the market still has some problems at present, can constantly change along with the change of air current at the in-process that cruises behind the rotor propeller stall, not only can increase flight resistance, still can have corresponding dynamic influence to the aircraft. For some composite wing unmanned aerial vehicles with short landing gears or without landing gears, the aircraft is easy to damage a propulsion propeller or a pull-in propeller due to uncertainty of posture caused by external interference when landing.

Disclosure of Invention

The invention aims to provide a directional locking mechanism of a propeller.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the utility model provides a directional locking mechanism of screw, includes screw, motor the motor axis of rotation of motor, motor fixing support, magnet fixing support, fix first magnet of multiunit on the motor fixing support with fix multiunit second magnet on the magnet fixing support, motor fixed mounting is in on the motor fixing support, motor axis of rotation one end is connected the screw, one end fixed connection magnet fixing support, magnet fixing support surrounds motor fixing support, the motor axis of rotation of motor drives the screw with magnet fixing support rotates in step, when the motor stall or be close the stall, first magnet with the different magnetic pole of second magnet attracts each other, directional locking the position of screw.

Further, the motor is a double-output-shaft motor.

Furthermore, the multiple groups of first magnets fixed on the motor fixing support comprise horizontal first magnet groups and vertical first magnet groups, wherein the horizontal first magnet groups and the vertical first magnet groups are symmetrically arranged, the magnetic poles of the upper ends of the horizontal first magnet groups are the same, the magnetic poles of the upper ends of the vertical first magnet groups are the same, and the magnetic poles of the upper ends of the horizontal first magnet groups and the magnetic poles of the upper ends of the vertical first magnet groups are opposite.

Furthermore, the plurality of groups of second magnets fixed on the magnet fixing support comprise a horizontal second magnet group and a vertical second magnet group which are symmetrically arranged, the magnetic poles of the upper ends of the horizontal second magnet group are the same, the magnetic poles of the upper ends of the vertical second magnet group are the same, and the magnetic poles of the upper ends of the horizontal second magnet group and the vertical second magnet group are opposite.

Further, when the motor stops rotating or is close to stopping rotating, the first magnet and the second magnet generate repulsive force when corresponding to the same-name magnetic poles; and when the first magnet and the second magnet are opposite in magnetic pole, attraction is generated, and the position of the propeller is directionally locked.

Further, when the motor is electrified to rotate, the generated torque can resist the attraction force between the first magnet and the second magnet.

Further, the multiple groups of first magnets are arranged in an outer ring groove of the motor fixed support.

Further, the plurality of sets of second magnets are arranged in inner ring grooves of the magnet fixing support.

Furthermore, the attraction force and the repulsion force between the multiple groups of first magnets and the second magnets only generate torque on the propeller and cannot cause oscillation in the direction perpendicular to the plane of the propeller.

The invention has the beneficial effects that:

1. the composite wing unmanned aerial vehicle rotor propeller can be locked at the position consistent with the cruising direction when the composite wing unmanned aerial vehicle rotor propeller cruises, the flight resistance is reduced, and the cruising time and the cruising range of the aircraft are increased.

2. Can impel or pull into the screw locking with compound wing unmanned aerial vehicle in with ground parallel position, contact ground causes the damage when avoiding descending.

3. The attraction and the repulsion between the magnets only generate torque to the propeller, and the propeller cannot vibrate in the vertical direction of the plane of the propeller.

4. Simple structure need not carry out corresponding transformation to screw and motor, convenient to use, and the reliability is high.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a front view of a portion of the structure of FIG. 1;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a schematic diagram of the operation of the present invention;

FIG. 5 is a block diagram of an embodiment of the present invention;

labeled as:

1. the motor comprises a propeller, 2, a motor, 3, a motor rotating shaft, 4, a motor fixing support, 5, a magnet fixing support, 6, a first magnet, 7 and a second magnet.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The utility model provides a directional locking mechanism of screw, as shown in fig. 1 and 3, including screw 1, motor 2's motor axis of rotation 3, motor fixing support 4, magnet fixing support 5, fix the first magnet 6 of multiunit on motor fixing support 4 and fix the multiunit second magnet 7 on magnet fixing support 5, motor 2 fixed mounting is on motor fixing support 4, motor 2 adopts the biax motor, screw 1 is connected to 3 one ends of motor axis of rotation, one end fixed connection magnet fixing support 5, magnet fixing support 5 surrounds motor fixing support 4, motor 1's motor axis of rotation 3 drives screw 1 and magnet fixing support 5 synchronous rotations, when motor 1 stalls or is close to the stall, first magnet 6 attracts mutually with second magnet 7 unlike magnetic pole, directional locking screw 1's position.

As shown in fig. 1 and 3, a plurality of first magnets 6 are fixed in the outer ring groove of the motor fixing support 4, and a plurality of second magnets 7 are fixed in the inner ring groove of the magnet fixing support 5.

As shown in fig. 4, the plurality of sets of first magnets 6 of the present embodiment includes a horizontal first magnet set and a vertical first magnet set, the upper ends of the horizontal first magnet set have the same magnetic poles, the upper ends of the vertical first magnet set have the same magnetic poles, and the upper ends of the horizontal first magnet set and the vertical first magnet set have opposite magnetic poles. The multiple groups of second magnets 7 fixed on the magnet fixing support 5 comprise symmetrically arranged horizontal second magnet groups and symmetrically arranged vertical second magnet groups, the magnetic poles of the upper ends of the horizontal second magnet groups are the same, the magnetic poles of the upper ends of the vertical second magnet groups are the same, and the magnetic poles of the upper ends of the horizontal second magnet groups are opposite to those of the upper ends of the vertical second magnet groups.

As shown in fig. 5, the screw and the motor are fixed and constitute vertical rotor power device on unmanned aerial vehicle's vaulting pole, and when unmanned aerial vehicle was patrolling and voyaging, vertical rotor power device's screw locking was kept unanimous with unmanned aerial vehicle flight direction, and the resistance of flight that can significantly reduce increases unmanned aerial vehicle's flight journey and time of navigating. As shown in fig. 4, when unmanned aerial vehicle rotor power device stall or be close to the stall, the first magnet group upper end magnetic pole of level is the S utmost point of magnet, the magnetic pole of perpendicular first magnet group upper end is the N utmost point of magnet, the second magnet group upper end magnetic pole of level is the N utmost point of magnet, the magnetic pole of perpendicular second magnet group upper end is the S utmost point of magnet, the S utmost point of the first magnet group of level like this attracts mutually with the N utmost point unlike magnetic pole of horizontal second magnet group, the N of perpendicular first magnet group and attract mutually with the S utmost point unlike magnetic pole of perpendicular second magnet group to adsorb the position of locking screw.

The magnet groups are square magnets and can be replaced by arc-shaped magnetic shoes as required.

As shown in fig. 4 and 5, during installation, the direction of the horizontal first magnet group of the motor fixing support 4 is consistent with the direction of the unmanned aerial vehicle body, and the direction perpendicular to the first magnet group is perpendicular to the direction of the unmanned aerial vehicle body. During the later flight, the vertical rotor power device can be ensured to stop rotating or approach to stop rotating, and the direction of the propeller can be kept consistent with the heading of the airplane.

It should be noted that when the motor 2 is powered on to rotate, the generated torque can resist the attraction force between the first magnet 6 and the second magnet 7, so that the motor can operate normally. And the attractive force and the repulsive force between the first magnet 6 and the second magnet 7 only generate torque on the propeller 1, and cannot cause the oscillation in the vertical direction of the plane of the propeller.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A directional locking mechanism of screw propeller, its characterized in that: comprises a propeller (1), a motor (2), a motor rotating shaft (3) of the motor (2), a motor fixing support (4), a magnet fixing support (5), a plurality of groups of first magnets (6) fixed on the motor fixing support (4) and a plurality of groups of second magnets (7) fixed on the magnet fixing support (5), wherein the motor (2) is fixedly arranged on the motor fixing support (4), one end of the motor rotating shaft (3) is connected with the propeller (1), the other end of the motor rotating shaft is fixedly connected with the magnet fixing support (5), the magnet fixing support (5) surrounds the motor fixing support (4), the motor rotating shaft (3) of the motor (1) drives the propeller (1) and the magnet fixing support (5) to synchronously rotate, when the motor (1) stops rotating or is close to stop rotating, the first magnets (6) attract the second magnets (7) in different names, the position of the propeller (1) is directionally locked.

2. A propeller directional locking mechanism as recited in claim 1, wherein: the motor (2) is a double-output-shaft motor.

3. A propeller directional locking mechanism as recited in claim 2, wherein: the multi-group first magnets (6) fixed on the motor fixing support (4) comprise horizontal first magnet groups and vertical first magnet groups, wherein the horizontal first magnet groups are symmetrically arranged, the magnetic poles of the upper ends of the horizontal first magnet groups are the same, the magnetic poles of the upper ends of the vertical first magnet groups are the same, and the magnetic poles of the upper ends of the horizontal first magnet groups are opposite to those of the upper ends of the vertical first magnet groups.

4. A propeller directional locking mechanism as recited in claim 3, wherein: the multiple groups of second magnets (7) fixed on the magnet fixing support (5) comprise horizontal second magnet groups and vertical second magnet groups, wherein the horizontal second magnet groups and the vertical second magnet groups are symmetrically arranged, the magnetic poles of the upper ends of the horizontal second magnet groups are the same, the magnetic poles of the upper ends of the vertical second magnet groups are the same, and the magnetic poles of the upper ends of the horizontal second magnet groups and the magnetic poles of the upper ends of the vertical second magnet groups are opposite.

5. A propeller directional locking mechanism as claimed in any one of claims 1 to 4, wherein: when the motor (1) stops rotating or is close to stopping rotating, the first magnet (6) and the second magnet (7) generate repulsive force when corresponding to the same-name magnetic poles; when the first magnet (6) and the second magnet (7) are opposite in magnetic pole, attraction is generated, and the position of the propeller (1) is directionally locked.

6. The propeller directional locking mechanism of claim 5, wherein: when the motor (2) is electrified to rotate, the generated torque can resist the attraction force between the first magnet (6) and the second magnet (7).

7. A propeller directional locking mechanism as recited in claim 6, wherein: the multiple groups of first magnets (6) are arranged in outer ring grooves of the motor fixing support (4).

8. A propeller directional locking mechanism as recited in claim 7, wherein: the groups of second magnets (7) are arranged in inner ring grooves of the magnet fixing support (5).

9. A propeller directional locking mechanism as claimed in any one of claims 6 to 8, wherein: the attractive force and the repulsive force between the multiple groups of first magnets (6) and the second magnets (7) only generate torque on the propeller (1), and the propeller does not vibrate in the direction perpendicular to the plane of the propeller.

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