CN219667899U

CN219667899U - Water-air dual-purpose foldable propeller

Info

Publication number: CN219667899U
Application number: CN202320475755.1U
Authority: CN
Inventors: 尹哲源; 甘文洋; 朱大奇; 欧皆秀; 刘响响
Original assignee: Shanghai Maritime University
Current assignee: Shanghai Maritime University
Priority date: 2023-03-14
Filing date: 2023-03-14
Publication date: 2023-09-12
Anticipated expiration: 2033-03-14

Abstract

The utility model relates to a water-air dual-purpose foldable propeller, which comprises a first propeller, a second propeller, a driving motor and a driving shaft, wherein the first propeller is connected with the second propeller; the driving motor is used for driving and connecting the driving shaft, the first propeller and the second propeller are sequentially sleeved on the driving shaft, the first propeller comprises a sliding bearing, a fixing pin, a fixing arm and a propeller wing, the first propeller is connected with the driving shaft through the sliding bearing, the sliding bearing is connected with the driving shaft through the fixing pin, the fixing pin is detachably connected with the sliding bearing, the fixing arm is fixed on the sliding bearing, the propeller wing is fixed on the fixing arm in a foldable mode, and a waterproof outer sleeve shell is arranged on the outer side of the driving motor. Compared with the prior art, the utility model has the advantages of high stability, long service life and the like.

Description

Water-air dual-purpose foldable propeller

Technical Field

The utility model relates to the technical field of propellers, in particular to a foldable propeller with a water-air dual-purpose wing.

Background

The rotor wing system of the existing coaxial double-wing aircraft comprises a single-layer period variable pitch type and a double-layer period variable pitch type. The wing system of the single-layer periodic variable-pitch structure has simple structure, but has insufficient control force in the flight process, and different rotating speeds are needed to balance torque due to different variable-pitch angles of the upper wing and the lower wing. The wing system of the double-layer periodic variable-pitch structure has stronger control force, but a separate power system is required to be provided for the upper wing variable-pitch, so that the mechanical structure is too complex and inconvenient to realize. In order to simplify the mechanical layout of the power module and the transmission mechanism of the existing wing system of the coaxial double-wing aircraft, the power module is arranged between the upper rotor wing and the lower rotor wing, and the motor and wires of the power module are exposed outside and cannot work in rainy days or in flammable and explosive gas environments.

As disclosed in chinese patent CN107380423a, a water-air amphibious unmanned aerial vehicle comprises an unmanned aerial vehicle body, on which at least one horn is arranged, the tail end of each horn is respectively provided with a driving component, the upper end of each driving component is provided with a rotor, the lower end of each driving component is provided with a marine propeller, and the rotors are connected with the propellers through unidirectional bearings or unidirectional clutches; when the unmanned aerial vehicle flies in the air, the motor drives the rotor wing to rotate so as to realize normal flying of the unmanned aerial vehicle in the air, and attitude adjustment is realized through control of the rotor wing, so that the action effect of the marine propeller in the air is poor, and the flying of the unmanned aerial vehicle is not influenced; when the motor drives the marine propeller to work when the motor enters water, the rotor does not provide the efficiency required by underwater movement, and does not work; when the rotating speed of the marine propeller is increased, the unmanned aerial vehicle moves downwards to the underwater, and the unmanned aerial vehicle runs underwater through attitude control of the unmanned aerial vehicle.

The propeller used by the water-air amphibious unmanned aerial vehicle comprises a water propeller and an air propeller, but the long propeller used in the air when moving in water still rotates under the action of external force, so that certain resistance is generated to the movement of the unmanned aerial vehicle in water, and the unmanned aerial vehicle is low in movement efficiency and waste of unnecessary energy sources.

Disclosure of Invention

The utility model aims to overcome the defects that in the prior art, a propeller adopted by a water-air amphibious unmanned aerial vehicle comprises a water propeller and an air propeller, but a long propeller used in the air can still rotate under the action of external force when moving in water, so that a certain resistance is generated for the unmanned aerial vehicle to move in water, the moving efficiency of the unmanned aerial vehicle is low and unnecessary energy is wasted.

The aim of the utility model can be achieved by the following technical scheme:

a water-air dual-purpose foldable propeller comprises a first propeller, a second propeller, a driving motor and a driving shaft;

the driving motor is connected with the driving shaft in a driving mode, the first propeller and the second propeller are sequentially sleeved on the driving shaft, the first propeller comprises a sliding bearing, a fixing pin, a fixing arm and a propeller wing, the first propeller is connected with the driving shaft through the sliding bearing, the sliding bearing is connected with the driving shaft through the fixing pin, the fixing pin is detachably connected with the sliding bearing, the fixing arm is fixed on the sliding bearing, the propeller wing is connected with the fixing arm, and a waterproof outer sleeve shell is arranged on the outer side of the driving motor.

Preferably, a plurality of paddle fixing rods are arranged on the outer side of the waterproof outer sleeve, and the folded paddles can be detachably fixed by the paddle fixing rods.

Preferably, a miniature water pressure sensor is arranged on the outer side of the waterproof jacket shell, and the miniature water pressure sensor is detachably fixed on the waterproof jacket shell.

Preferably, the waterproof jacket case is provided with a connection rod at an end opposite to the fixed driving shaft, the connection rod being connected to the external device.

Preferably, the blade is foldably fixed to the fixed arm by a blade fixing pin.

Preferably, the fixed arm comprises a rotating connecting piece and a paddle wing connecting arm, a bearing hole is formed in the rotating connecting piece, the sliding bearing is located in the bearing hole, and the paddle wing connecting arm is fixed on the rotating connecting piece.

Preferably, the outer contour shape of the rotary connecting piece is polygonal, and the bearing hole is positioned at the center of the polygon.

Preferably, the number of the blade connecting arms is a plurality.

Preferably, the first propeller wing is longer than the second propeller.

Preferably, the number of said paddles is a plurality.

Compared with the prior art, the utility model has the following advantages:

(1) In this scheme when using in the sky, the central axis of fixed arm and oar wing is on a straight line, and under the effect of fixed pin, the relative position between slide bearing and the drive shaft is fixed, and first screw is the expansion state, and driving motor passes through the drive shaft and drives first screw and second screw rotation, provides the lift for the device. The first propeller and the second propeller rotate together to provide lift force for the device, larger acting force can be provided, and the arrangement of the single-shaft double propellers improves the flying control force of the device.

When using in water, the oar wing is folded, and the fixed pin changes the position simultaneously, and slide bearing rotatable cover is established on the drive shaft, and driving motor passes through the drive shaft and drives the second screw and rotate, and the second screw produces the interact with water, and thrust unit advances, because slide bearing rotatable cover is established in the drive shaft and first screw is folding, first screw does not take place to rotate. When the device is used in water, when the first propeller rotates or vibrates under the use of external force, the resistance of the device to advance is increased or the stability of the second propeller is influenced due to vibration transmission, so that the stability and the service life of the second propeller device are improved.

(2) The folding propeller is fixed through the propeller fixing rod, so that the propeller is fixed on the waterproof outer sleeve shell, and meanwhile, the sliding bearing is combined, so that the driving shaft rotates in the process, the first propeller is not driven to rotate, the resistance caused by rotation of the first propeller is reduced, the propeller is fixed on the waterproof outer sleeve shell, the size of the whole device is smaller, the structural stability is higher, and the movement efficiency of the device in water is improved.

(3) The miniature water pressure sensor can detect whether the current position of the device is in water or not, the detection precision of the device to the environment is improved, the miniature water pressure sensor is light in weight and can not increase extra load for the device, and meanwhile, the miniature water pressure sensor can be detachably fixed on the waterproof jacket shell and is convenient to use.

Drawings

FIG. 1 is a schematic view of a foldable propeller according to the present utility model;

in the figure: 1. the propeller comprises a first propeller, 2, a second propeller, 3, a driving motor, 4, a driving shaft, 5, a sliding bearing, 6, a fixing pin, 7, a fixing arm, 8, a propeller wing, 9, a waterproof outer shell, 10, a propeller wing fixing rod, 11, a connecting rod, 12, a propeller wing fixing pin, 13, a rotating connecting piece, 14 and a propeller wing connecting arm.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model.

It should be noted that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

Example 1

The embodiment provides a water-air dual-purpose foldable propeller, which comprises a first propeller 1, a second propeller 2, a driving motor 3 and a driving shaft 4, as shown in figure 1;

the drive motor 3 drive connection drive shaft 4, first screw 1 and second screw 2 cover are established on drive shaft 4 in proper order, first screw 1 includes slide bearing 5, fixed pin 6, fixed arm 7 and oar wing 8, first screw 1 passes through slide bearing 5 and connects drive shaft 4, slide bearing 5 passes through fixed pin 6 and connects drive shaft 4, fixed pin 6 can dismantle on connecting slide bearing 5, fixed arm 7 is fixed on slide bearing 5, oar wing 8 connects fixed arm 7, the outside of drive motor 3 is equipped with waterproof overcoat shell 9.

Working principle: when the device is used in the air, the central axes of the fixed arm 7 and the propeller wings 8 are on the same straight line, the relative positions of the sliding bearing 5 and the driving shaft 4 are fixed under the action of the fixed pin 6, the first propeller 1 is in a unfolding state, and the driving motor 3 drives the first propeller 1 and the second propeller 2 to rotate through the driving shaft 4 so as to provide lifting force for the device.

When the propeller is used in water, the propeller wings 8 are folded, the fixing pins 6 change positions, the sliding bearings 5 are rotatably sleeved on the driving shaft 4, the driving motor 3 drives the second propeller 2 to rotate through the driving shaft 4, the second propeller 2 interacts with water, the pushing device advances, and the sliding bearings 5 are rotatably sleeved on the driving shaft 4 and the first propeller 1 is folded, so that the first propeller 1 does not rotate.

In this scheme when using in the sky, the central axis of fixed arm 7 and oar wing 8 is on a straight line, and under the effect of fixed pin 6, the relative position between slide bearing 5 and the drive shaft 4 is fixed, and first screw 1 is the expansion state, and driving motor 3 passes through drive shaft 4 and drives first screw 1 and second screw 2 rotation, provides the lift for the device. The first propeller 1 and the second propeller 2 rotate together to provide lift force for the device, larger acting force can be provided, and the arrangement of the single-shaft double propellers improves the flying maneuvering force of the device.

When the propeller is used in water, the propeller wings 8 are folded, the fixing pins 6 change positions, the sliding bearings 5 are rotatably sleeved on the driving shaft 4, the driving motor 3 drives the second propeller 2 to rotate through the driving shaft 4, the second propeller 2 interacts with water, the pushing device advances, and the sliding bearings 5 are rotatably sleeved on the driving shaft 4 and the first propeller 1 is folded, so that the first propeller 1 does not rotate. When the device is used in water, when the first propeller 1 rotates or vibrates under the use of external force, the resistance of the device to advance is increased or the stability of the second propeller 2 is influenced by vibration transmission, so that the stability and the service life of the second propeller 2 are improved.

As a preferred embodiment, the outer side of the waterproof outer casing 9 is provided with a plurality of paddle fixing rods 10, and the paddle fixing rods 10 detachably fix the folded paddles 8.

The folded propeller 8 is fixed through the propeller fixing rod 10, so that the propeller 8 is fixed on the waterproof jacket shell 9, and meanwhile, the sliding bearing 5 is combined, so that the first propeller 1 is not driven to rotate in the process of rotating the driving shaft 4, the resistance caused by the rotation of the first propeller 1 is reduced, the propeller 8 is fixed on the waterproof jacket shell 9, the size of the whole device is smaller, the structural stability is higher, and the movement efficiency of the device in water is improved.

The outside of waterproof jacket shell 9 is equipped with miniature water pressure sensor, and miniature water pressure sensor can dismantle fixedly on waterproof jacket shell 9.

The miniature water pressure sensor can detect whether the current position of device is in the aquatic, improves the detection precision of device to the environment, and miniature water pressure sensor's quality is very light, can not increase extra load for the device, and miniature water pressure sensor can dismantle simultaneously and fix on waterproof overcoat shell 9, and it is also very convenient to use.

The end of the waterproof jacket case 9 opposite to the fixed driving shaft 4 is provided with a connection rod 11, and the connection rod 11 is connected to an external device.

The blade 8 is foldably fixed to the fixed arm 7 by a blade fixing pin 12.

The fixed arm 7 comprises a rotating connecting piece 13 and a paddle connecting arm 14, a bearing hole is formed in the rotating connecting piece 13, the sliding bearing 5 is located in the bearing hole, and the paddle connecting arm 14 is fixed on the rotating connecting piece 13.

The outer contour shape of the rotary connecting piece 13 is polygonal, and the bearing hole is positioned at the center of the polygon. The number of blade attachment arms 14 is plural. The length of the wings of the first propeller 1 is greater than that of the second propeller 2. The number of blades 8 is plural.

The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.

Claims

1. The foldable propeller for water and air use is characterized by comprising a first propeller (1), a second propeller (2), a driving motor (3) and a driving shaft (4);

the driving motor (3) is in driving connection with the driving shaft (4), the first screw propeller (1) and the second screw propeller (2) are sequentially sleeved on the driving shaft (4), the first screw propeller (1) comprises a sliding bearing (5), a fixing pin (6), a fixing arm (7) and a propeller wing (8), the driving shaft (4) is connected with the first screw propeller (1) through the sliding bearing (5), the driving shaft (4) is connected with the sliding bearing (5) through the fixing pin (6), the fixing pin (6) is detachably connected with the sliding bearing (5), the fixing arm (7) is fixed on the sliding bearing (5), the propeller wing (8) is connected with the fixing arm (7), and a waterproof outer sleeve shell (9) is arranged on the outer side of the driving motor (3).

2. The foldable propeller for water and air use according to claim 1, wherein a plurality of propeller fixing rods (10) are arranged on the outer side of the waterproof outer sleeve shell (9), and the number of the propeller fixing rods (10) is multiple, and the propeller fixing rods (10) can be used for detachably fixing the folded propeller (8).

3. A foldable propeller for both water and air use as claimed in claim 1, wherein the outside of the waterproof casing (9) is provided with a miniature water pressure sensor which is detachably fixed to the waterproof casing (9).

4. A water and air foldable propeller according to claim 1, characterized in that the end of the waterproof jacket shell (9) opposite the fixed drive shaft (4) is provided with a connecting rod (11), said connecting rod (11) being connected to external means.

5. A foldable propeller for use in water and air as claimed in claim 1, wherein the blade (8) is foldably secured to the fixed arm (7) by a blade securing pin (12).

6. A water and air dual-purpose foldable propeller according to claim 1, wherein the fixed arm (7) comprises a rotating connecting piece (13) and a propeller wing connecting arm (14), a bearing hole is formed in the rotating connecting piece (13), the sliding bearing (5) is located in the bearing hole, and the propeller wing connecting arm (14) is fixed on the rotating connecting piece (13).

7. A water and air foldable propeller according to claim 6, characterized in that the outer contour of the rotary connection member (13) is polygonal, and the bearing hole is located at the center of the polygon.

8. A water and air dual purpose foldable propeller as claimed in claim 6, wherein the number of said blade attachment arms (14) is plural.

9. A foldable propeller for aero-water use as claimed in claim 1, wherein the first propeller (1) has a longer wing than the second propeller (2).

10. A water and air dual purpose foldable propeller as claimed in claim 1, wherein the number of said blades (8) is plural.