Sea-air dual use helical propeller

Abstract

The present application relates to a kind of sea-air multiplexing propeller, including driving mechanism, air propeller mechanism and water propeller mechanism, the driving mechanism includes mobile motor component and center shaft component;The air propeller mechanism and water propeller mechanism are located at the two ends of center shaft component respectively, first conducting part is equipped on the air propeller mechanism, second conducting part is equipped on the water propeller mechanism, the upper end of mobile motor component is equipped with the first connecting component matched with first conducting part, the lower end of mobile motor component is equipped with the second connecting component matched with second conducting part, mobile motor component is set on center shaft component, mobile motor component moves up and down along center shaft component, so that first conducting part drives and connects first connecting component, or second conducting part drives and connects second connecting component.Compared with prior art, the present application has the advantages of low energy consumption, high efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of propeller, in particular to a sea-air multipurpose spiral propeller. BACKGROUND

[0002] With the more and more extensive use of the sea and the sky, especially in the field of transportation and detection, such as sea-air meteorological data collection and sea-air target detection and identification, due to the different media, it is difficult to use a single carrier to realize the transmission and recovery of detection equipment, and the sea-air compatible unmanned system has become a research focus in recent years.

[0003] Chinese patent CN105539847B discloses a water-air amphibious unmanned aerial vehicle, which comprises a shell, a driving system, a camera system and a counterweight system; the driving system comprises a support column, a branch support, a plurality of power motors and a plurality of propellers; the counterweight system is arranged on the inner wall of the shell; a partition plate is arranged in the shell and above the counterweight system; the water-air amphibious unmanned aerial vehicle further comprises a video analyzer, a storage battery and a central controller, the video analyzer is fixed on the upper part of the partition plate and connected with the camera through wires; the storage battery and the central controller are arranged on the upper part of the partition plate; the end part of the shell away from the driving system is further provided with an ultrasonic positioner; the central controller is integrated with a wireless transceiver module, a gyroscope and an accelerometer.

[0004] The above-mentioned prior art adopts multiple propellers and corresponding multiple driving motors for driving, and multiple motors increase the weight of the unmanned aerial vehicle and increase the energy consumption of the device; at the same time, considering that the propeller in the air is longer, the wing lift in the water is small, the propeller pitch is smaller, and the propelling efficiency in the water is lower, which increases the resistance in the water, so that the same propeller has the problems of insufficient power and low efficiency. SUMMARY

[0005] The purpose of the present application is to overcome the defects of the prior art, that is, to provide a sea-air multipurpose spiral propeller.

[0006] The purpose of the present application can be achieved by the following technical solutions:

[0007] A sea-air multipurpose spiral propeller, comprising a driving mechanism, an air propeller mechanism and a water propeller mechanism, the driving mechanism comprising a moving motor part and a central shaft part;

[0008] The air propeller mechanism and the water propeller mechanism are respectively located at two ends of the central shaft component, the air propeller mechanism is provided with a first conducting component, the water propeller mechanism is provided with a second conducting component, the upper end of the mobile motor component is provided with a first connecting component matched with the first conducting component, the lower end of the mobile motor component is provided with a second connecting component matched with the second conducting component, the mobile motor component is sleeved on the central shaft component, and the mobile motor component moves up and down along the central shaft component, so that the first conducting component drives the first connecting component, or the second conducting component drives the second connecting component.

[0009] Preferably, the central shaft component comprises a fixed shaft and a second fixed sleeve, and the mobile motor component comprises a first motor and a second motor.

[0010] The second fixed sleeve is sleeved on the fixed shaft, the first motor and the second motor are arranged outside the second fixed sleeve, the second motor moves up and down along the second fixed sleeve, one side of the second motor is fixed on the stator of the first motor, and the upper and lower end faces of the outer rotor of the first motor are respectively provided with the first connecting component and the second connecting component.

[0011] Preferably, the first conducting component and the second conducting component are both spring contact rod structures, and the spring contact rod structure comprises a spring pipe, a spring cover, a contact rod and a ball.

[0012] One end of the spring pipe is fixed on the propeller mechanism, and the other end is connected to the spring cover, the contact rod is a telescopic rod, one end of the contact rod is fixed on the spring cover, and the other end is connected to the ball.

[0013] The first connecting component and the second connecting component are both groove structures, the groove structure comprises an annular groove and a fixed hole, the fixed hole is located outside the annular groove, and the shape of the fixed hole is matched with the shape of the contact rod.

[0014] Preferably, the outer side of the second fixed sleeve is provided with threads, and the second motor is threadedly connected with the second fixed sleeve.

[0015] Preferably, the central shaft component further comprises a first fixed sleeve, the air propeller mechanism and the water propeller mechanism are both gear folding structures, and the gear folding structure comprises a third motor, a first bevel gear, a second bevel gear and a propeller fixed seat.

[0016] The first fixed sleeve is sleeved on the fixed shaft, the first fixed sleeve is located between the fixed shaft and the second fixed sleeve, the stator of the third motor is fixedly connected with the fixed shaft, the outer rotor of the third motor is fixedly connected with the first fixed sleeve, the first bevel gear is coaxially fixed on the outside of the first fixed sleeve, the second bevel gear is matchedly connected with the first bevel gear, and the axis of the second bevel gear is perpendicular to the axis of the first bevel gear, the second bevel gear is rotatably fixed on the propeller fixing base, the propeller fixing base is sleeved on the first fixed sleeve, the second bevel gear is drivingly connected with the propeller blade, and the propeller blade rotates along with the second bevel gear.

[0017] Preferably, the propeller fixing base is provided with base holes, gear fixing shafts are arranged in the base holes, the second bevel gear is sleeved on the gear fixing shafts, and the gear fixing shafts are rotatably fixed in the base holes.

[0018] Preferably, the first conducting part and the second conducting part are both fixed on the propeller fixing base, and the propeller fixing base is provided with blade fixing grooves, so that, when the propeller blade is unfolded, the root of the propeller blade is located in the blade fixing groove, and when the first motor drives the propeller fixing base to rotate, the propeller fixing base drives the propeller blade to rotate.

[0019] Preferably, the first bevel gear is fixed on the gear fixing base, and the gear fixing base is fixed with a bottom cover at one end, and the bottom cover is sleeved on the first fixed sleeve.

[0020] Preferably, a first electromagnetic brake is arranged between the first fixed sleeve and the fixed shaft, and a second electromagnetic brake is arranged between the first fixed sleeve and the second fixed sleeve.

[0021] Preferably, the aerial propeller mechanism and the underwater propeller mechanism use aerial special propellers and underwater special propellers respectively.

[0022] Compared with the prior art, the present application has the following advantages:

[0023] (1) In the present scheme, the moving motor part can move up and down along the central shaft part, and a first connecting part and a second connecting part are arranged at the upper end and the lower end of the moving motor part respectively, and the aerial propeller mechanism and the underwater propeller mechanism are provided with matched first conducting parts and second conducting parts, so that the moving motor part can be drivingly connected with the aerial propeller mechanism and the underwater propeller mechanism respectively, only one propeller is driven in the motor driving process, the energy consumption is reduced, the efficiency of motor driving is improved, and the problem of insufficient power in the driving process is solved.

[0024] And the air propeller mechanism and the water propeller mechanism use air special propeller and water special propeller respectively, avoid the air propeller being longer, the wing lift being small in water, the propeller pitch being smaller, the propeller pushing efficiency being lower in water, and the water resistance being increased, therefore, the same propeller has the defects of insufficient power and low efficiency, and the efficiency of the motor drive is further improved.

[0025] (2) The second motor moves up and down along the second fixed sleeve, and the first motor moves up and down along the second fixed sleeve, the first motor is movably connected with the air propeller mechanism and the water propeller mechanism, a single driving motor drives multiple propellers to rotate, the second motor is an outer rotor motor, which is simple and small, and avoids the problem of increasing the weight of the device and wasting energy when multiple driving motors drive multiple propellers to rotate.

[0026] (3) The stator of the third motor is fixedly connected with the fixed shaft, and the outer rotor is fixedly connected with the first fixed sleeve. When the third motor rotates, the first fixed sleeve rotates around the fixed shaft. The first bevel gear is coaxially fixedly connected with the first fixed sleeve, and the central axis of the second bevel gear is vertically connected with the central axis of the first bevel gear. The third motor drives the first fixed sleeve to rotate, and then drives the first bevel gear to rotate. The propeller blades connected with the second bevel gear rotate, and the propeller blades change from being perpendicular to the fixed shaft to being parallel to the fixed shaft, realizing the folding of the propeller. The folding structure is simple and reliable, and can fold the propeller blades conveniently and quickly, reduce the resistance generated by the unfolded non-working propeller blades, and improve the driving efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 The structure schematic view of the propeller pusher provided by the present application is shown in the figure;

[0028] Figure 2 The connection structure schematic view of the air propeller mechanism and the water propeller mechanism provided by the present application is shown in the figure;

[0029] Figure 3 The structure schematic view of the driving mechanism provided by the present application is shown in the figure;

[0030] Figure 4 The structure schematic view of the air propeller mechanism provided by the present application is shown in the figure;

[0031] Figure 5 The structure schematic view of the water propeller mechanism provided by the present application is shown in the figure;

[0032] Figure 6 The structure schematic view of the spring contact rod structure provided by the present application is shown in the figure;

[0033] Figure 7The local enlarged schematic view of the electromagnetic brake structure provided by the application;

[0034] Figure 8 The structural schematic view of the propeller fixing seat provided by the application;

[0035] Figure 9 The working flow chart of the propeller propeller provided by the application;

[0036] Figure 10 The working flow chart of the sea mode converting into the air mode provided by the application;

[0037] In the figure: 1, fixed shaft, 2, first fixed sleeve, 3, second fixed sleeve, 4, first motor, 5, second motor, 6, spring tube, 7, spring cover, 8, touch rod, 9, ball, 10, annular groove, 11, fixed hole, 12, base hole, 13, gear fixing shaft, 14, gear fixing seat, 15, first electromagnetic brake, 16, second electromagnetic brake, 17, third motor, 18, first bevel gear, 19, second bevel gear, 20, propeller fixing seat, 21, blade fixing groove. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0040] It should be noted that: similar numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0041] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0042] It should be noted that the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified.

[0043] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0044] Embodiment 1

[0045] As shown in Figures 1-9 , the present embodiment provides a sea-air multiplexing propeller, which comprises a driving mechanism, an air propeller mechanism and a water propeller mechanism, the driving mechanism comprising a moving motor part and a center shaft part;

[0046] The air propeller mechanism and the water propeller mechanism are respectively located at both ends of the center shaft part, the air propeller mechanism is provided with a first conducting part, the water propeller mechanism is provided with a second conducting part, the upper end of the moving motor part is provided with a first connecting part matched with the first conducting part, the lower end of the moving motor part is provided with a second connecting part matched with the second conducting part, the moving motor part is sleeved on the center shaft part, and the moving motor part moves up and down along the center shaft part, so that the first conducting part drives the first connecting part, or the second conducting part drives the second connecting part.

[0047] As a preferred embodiment, as shown in Figure 3 , the center shaft part comprises a fixed shaft 1 and a second fixed sleeve 3, and the moving motor part comprises a first motor 4 and a second motor 5;

[0048] The second fixed sleeve 3 is sleeved on the fixed shaft 1, the first motor 4 and the second motor 5 are arranged outside the second fixed sleeve 3, the second motor 5 moves up and down along the second fixed sleeve 3, one side of the second motor 5 is fixed on the stator of the first motor 4, and the upper and lower end faces of the outer rotor of the first motor 4 are respectively provided with the first connecting component and the second connecting component.

[0049] Working principle: The first motor 4 moves up and down along the second fixed sleeve 3 under the driving of the second motor 5, so that the first motor 4 is movably connected with the first conducting component or the second conducting component, and then drives the air propeller mechanism or the water propeller mechanism.

[0050] The process that the first motor 4 is connected with and drives the air propeller mechanism is as follows: the second motor 5 rotates to drive the first motor 4 to move along the second fixed sleeve 3 to the direction of the air propeller mechanism, after moving a certain distance, the first conducting component is connected with the first connecting component, so that the first motor 4 drives the air propeller mechanism to be connected, and the water propeller mechanism is disconnected.

[0051] The process that the first motor 4 is connected with and drives the water propeller mechanism is as follows: the second motor 5 rotates to drive the first motor 4 to move along the second fixed sleeve 3 to the direction of the water propeller mechanism, after moving a certain distance, the second conducting component is connected with the second connecting component, so that the first motor 4 drives the water propeller mechanism to be connected, and the air propeller mechanism is disconnected.

[0052] The scheme moves the second motor 5 up and down along the second fixed sleeve 3 and drives the first motor 4 to move up and down along the second fixed sleeve 3, movably connects the first motor 4 with the air propeller mechanism and the water propeller mechanism, and drives multiple propellers to rotate by a single driving motor, the second motor 5 is an outer rotor motor, which is simple and small in structure, and avoids the problem that the weight of the device is increased to cause energy waste when multiple driving motors drive multiple propellers to rotate.

[0053] As shown in Figure 5 The first conducting component and the second conducting component are both spring contact rod structures, and the spring contact rod structure comprises a spring pipe 6, a spring cover 7, a contact rod 8 and a ball 9.

[0054] One end of the spring pipe 6 is fixed on the propeller mechanism, and the other end is connected to the spring cover 7, the contact rod 8 is a telescopic rod, one end of the contact rod 8 is fixed on the spring cover 7, and the other end is connected to the ball 9.

[0055] The first connecting component and the second connecting component are both groove structures, and the groove structure comprises an annular groove 10 and a fixed hole 11, the fixed hole 11 is located outside the annular groove 10, and the shape of the fixed hole 11 matches the shape of the contact rod 8.

[0056] When the first motor 4 approaches the air propeller mechanism and the water propeller mechanism, the outer rotor of the first motor 4 extrudes the first and second conductive parts, the spring tube 6 and the contact rod 8 are contracted, the end of the contact rod 8 with the ball 9 slides in the annular groove 10, and when the first motor 4 rotates, the contact rod 8 enters the fixed hole 11, thereby fixing the relative position of the first motor 4 and the air propeller mechanism and the water propeller mechanism.

[0057] The outer side of the second fixed sleeve 3 is provided with threads, and the second motor 5 is threadedly connected with the second fixed sleeve 3.

[0058] As shown in Figures 4-5 The center shaft part further includes a first fixed sleeve 2, and the air propeller mechanism and the water propeller mechanism are both gear folding structures, which include a third motor 17, a first bevel gear 18, a second bevel gear 19, and a propeller fixed seat 20.

[0059] The first fixed sleeve 2 is sleeved on the fixed shaft 1, and is located between the fixed shaft 1 and the second fixed sleeve 3. The stator of the third motor 17 is fixedly connected with the fixed shaft 1, and the outer rotor of the third motor 17 is fixedly connected with the first fixed sleeve 2. The first bevel gear 18 is coaxially fixed on the outer side of the first fixed sleeve 2. The second bevel gear 19 is in matching connection with the first bevel gear 18, and the axis of the second bevel gear 19 is perpendicular to the axis of the first bevel gear 18. The second bevel gear 19 is rotatably fixed on the propeller fixed seat 20, and the propeller fixed seat 20 is sleeved on the first fixed sleeve 2. The second bevel gear 19 is drivingly connected with the propeller blades, and the propeller blades rotate with the second bevel gear 19.

[0060] The stator of the third motor 17 is fixedly connected with the fixed shaft 1, and the outer rotor is fixedly connected with the first fixed sleeve 2. When the third motor 17 rotates, it drives the first fixed sleeve 2 to rotate around the fixed shaft 1. The first bevel gear 18 is coaxially fixedly connected with the first fixed sleeve 2. The central axis of the second bevel gear 19 is in perpendicular matching connection with the central axis of the first bevel gear 18. The third motor 17 rotates to drive the first fixed sleeve 2 to rotate, and then drives the first bevel gear 18 to rotate. The propeller blades connected with the second bevel gear 19 rotate, and the propeller blades change from being perpendicular to the fixed shaft to being parallel to the fixed shaft, thereby realizing the folding of the propeller. The above-mentioned folding structure is simple and reliable, and can conveniently and quickly fold the propeller blades, thereby reducing the resistance generated by the unfolding of the non-working propeller blades and improving the driving efficiency.

[0061] The propeller fixed seat 20 is provided with base holes 12, and the gear fixed shaft 13 is arranged in the base holes 12. The second bevel gear 19 is sleeved on the gear fixed shaft 13, and the gear fixed shaft 13 is rotatably fixed in the base holes 12. The number of the base holes 12 is multiple.

[0062] The first and second conductive components are fixed on the propeller fixing base 20, and the propeller fixing base 20 is provided with a blade fixing groove 21, so that when the propeller blades are unfolded, the roots of the propeller blades are located in the blade fixing groove 21, and when the first motor 4 drives the propeller fixing base 20 to rotate, the propeller fixing base 20 drives the propeller blades to rotate.

[0063] The first bevel gear 18 is fixed on the gear fixing base 14, and the gear fixing base 14 is fixed with a bottom cover at one end, and the bottom cover is sleeved on the first fixing sleeve 2.

[0064] As shown in Figure 7 , the first electromagnetic brake 15 is arranged between the first fixing sleeve 2 and the fixing shaft 1, and the second electromagnetic brake 16 is arranged between the first fixing sleeve 2 and the second fixing sleeve 3.

[0065] During the process that the second motor 5 drives the first motor 4 to move up and down along the second fixing sleeve 3, the first electromagnetic brake 15 is in an energized state, locking the positional relationship between the first fixing sleeve 2 and the fixing shaft 1, preventing the first fixing sleeve 2 and the fixing shaft 1 from rotating relatively during the rotation of the second motor 5, and affecting the unfolding degree of the propeller blades. During the process that the first motor 4 drives the propeller fixing base 20 to rotate, the first electromagnetic brake 15 and the second electromagnetic brake 16 are both in an energized state, locking the relative positions of the fixing shaft 1, the first fixing sleeve 2 and the second fixing sleeve 3, and ensuring the positions of the propeller blades and the first motor 4. In this embodiment, the first electromagnetic brake 15 and the second electromagnetic brake 16 are both resistance type thermistors.

[0066] The aerial propeller mechanism and the underwater propeller mechanism use aerial special propellers and underwater special propellers respectively.

[0067] As shown in Figure 10 , the embodiment further provides a conversion process for converting the device using the propeller from a marine working environment to an aerial working environment:

[0068] The first motor 4 stops rotating, and then the underwater special propeller stops rotating, the second electromagnetic brake 16 is de-energized, and the relative positions of the first fixing sleeve 2 and the second fixing sleeve 3 can be changed;

[0069] The second motor 5 rotates and moves the third motor 4 to the direction of the aerial propeller mechanism, moves to the position of the aerial propeller mechanism, the first connecting component on the first motor 4 connects the first conductive component, realizes the driving connection between the first motor 4 and the aerial propeller mechanism, and the second electromagnetic brake 16 is energized;

[0070] The first electromagnetic valve 15 is powered off, the third motor 17 rotates, the air propeller blades are unfolded and the water propeller blades are folded through the conical gear folding mechanism, after rotating a specific angle, the third motor 17 stops rotating, the first electromagnetic valve 15 is powered on, and the first motor 4 rotates to drive the air propeller mechanism to rotate, and the device is converted into the air mode.

[0071] The preferred embodiments of the present application are described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations without departing from the concept of the present application. Therefore, any technical solutions obtained by logical analysis, reasoning or limited experiments based on the prior art according to the concept of the present application should be within the protection scope defined by the claims.

Claims

1. A sea-air reusable propeller, characterized in that, It includes a drive mechanism, an air propeller mechanism, and an underwater propeller mechanism, wherein the drive mechanism includes a moving motor component and a central shaft component; The air propeller mechanism and the underwater propeller mechanism are located at opposite ends of the central shaft component. The air propeller mechanism is provided with a first transmission component, and the underwater propeller mechanism is provided with a second transmission component. The upper end of the moving motor component is provided with a first connecting component that matches the first transmission component, and the lower end of the moving motor component is provided with a second connecting component that matches the second transmission component. The moving motor component is sleeved on the central shaft component and moves up and down along the central shaft component, thereby causing the first transmission component to drive the connection of the first connecting component, or the second transmission component to drive the connection of the second connecting component.

2. The sea-air reusable propeller according to claim 1, characterized in that, The central shaft component includes a fixed shaft (1) and a second fixed sleeve (3), and the moving motor component includes a first motor (4) and a second motor (5); The second fixed sleeve (3) is sleeved on the fixed shaft (1). The first motor (4) and the second motor (5) are both located on the outside of the second fixed sleeve (3). The second motor (5) moves up and down along the second fixed sleeve (3). One side of the second motor (5) is fixed on the stator of the first motor (4). The upper and lower end faces of the outer rotor of the first motor (4) are respectively provided with the first connecting component and the second connecting component.

3. A sea-air reusable propeller according to claim 2, characterized in that, Both the first and second conductive components are spring contact rod structures, and the spring contact rod structure includes a spring tube (6), a spring cover (7), a contact rod (8), and a ball (9); One end of the spring tube (6) is fixed to the propeller mechanism, and the other end is connected to the spring cover (7). The contact rod (8) is a telescopic rod. One end of the contact rod (8) is fixed to the spring cover (7), and the other end is connected to the ball (9). Both the first connecting component and the second connecting component are groove-shaped structures. The groove-shaped structure includes an annular groove (10) and a fixing hole (11). The fixing hole (11) is located outside the annular groove (10), and the shape of the fixing hole (11) matches the shape of the contact rod (8).

4. A sea-air reusable propeller according to claim 2, characterized in that, The second fixed sleeve (3) has threads on its outer side, and the second motor (5) is threadedly connected to the second fixed sleeve (3).

5. A sea-air reusable propeller according to claim 2, characterized in that, The central shaft component also includes a first fixed sleeve (2). The air propeller mechanism and the underwater propeller mechanism are both gear folding structures. The gear folding structure includes a third motor (17), a first bevel gear (18), a second bevel gear (19), and a propeller mounting base (20). The first fixed sleeve (2) is sleeved on the fixed shaft (1). The first fixed sleeve (2) is located between the fixed shaft (1) and the second fixed sleeve (3). The stator of the third motor (17) is fixedly connected to the fixed shaft (1). The outer rotor of the third motor (17) is fixedly connected to the first fixed sleeve (2). The first bevel gear (18) is coaxially fixed to the outside of the first fixed sleeve (2). The second bevel gear (19) is engaged with the first bevel gear (18). The axis of the second bevel gear (19) is perpendicular to the axis of the first bevel gear (18). The second bevel gear (19) is rotatably fixed on the propeller mounting base (20). The propeller mounting base (20) is sleeved on the first fixed sleeve (2). The second bevel gear (19) drives the propeller blades. The propeller blades rotate with the second bevel gear (19).

6. A sea-air reusable propeller according to claim 5, characterized in that, The propeller mounting base (20) is provided with a base hole (12), and a gear fixing shaft (13) is provided in the base hole (12). The second bevel gear (19) is sleeved on the gear fixing shaft (13). The gear fixing shaft (13) is rotatably fixed in the base hole (12). There are multiple base holes (12).

7. A sea-air reusable propeller according to claim 5, characterized in that, The first and second transmission components are both fixed on the propeller mounting base (20). The propeller mounting base (20) has a blade fixing groove (21) so that when the propeller blades are unfolded, the root of the propeller blades is located in the blade fixing groove (21). When the first motor (4) drives the propeller mounting base (20) to rotate, the propeller mounting base (20) drives the propeller blades to rotate.

8. A sea-air reusable propeller according to claim 5, characterized in that, The first bevel gear (18) is fixed on the gear fixing seat (14), and a bottom cover is fixed at one end of the gear fixing seat (14), and the bottom cover is sleeved on the first fixing sleeve (2).

9. A sea-air reusable propeller according to claim 5, characterized in that, A first electromagnetic brake (15) is provided between the first fixed sleeve (2) and the fixed shaft (1), and a second electromagnetic brake (16) is provided between the first fixed sleeve (2) and the second fixed sleeve (3).

10. A sea-air reusable propeller according to claim 1, characterized in that, The air propeller mechanism and the underwater propeller mechanism respectively use dedicated air propellers and dedicated underwater propellers.

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