CN217805207U - Driving mechanism, propeller and water equipment - Google Patents

Abstract

The application discloses actuating mechanism, propeller and equipment on water. The drive mechanism includes: a housing; a first rotor disposed within the housing; the first rotating shaft is provided with a first front end and a first rear end which are oppositely arranged, the first rear end is fixedly connected with the first rotor, and the first front end extends out of the shell and is fixedly connected with the first propeller; a second rotor disposed within the housing; the second rotating shaft is coaxially arranged with the first rotating shaft and is provided with a second front end and a second rear end which are oppositely arranged, the second rear end of the second rotating shaft is fixedly connected with the second rotor, and the second front end of the second rotating shaft extends out of the shell and is fixedly connected with the second propeller; and the stator is fixedly arranged in the shell and is in electromagnetic fit with the first rotor and the second rotor so as to drive the first rotor to rotate along a first direction and drive the second rotor to rotate along a second direction, wherein the first direction is opposite to the second direction. This application can realize the direct drive to the contra-rotating screw, noise abatement, increase of service life.

Description

Actuating mechanism, propeller and equipment on water

Technical Field

The application relates to the technical field of ship power, in particular to a driving mechanism, a propeller and water equipment.

Background

The propeller is the most widely used propeller among various propellers, and is a device which rotates in water by means of blades and converts the rotating power of an engine into propelling force.

At present, part of power systems used for water equipment, such as a propeller of a ship, adopt a scheme of contra-rotating propellers, and compared with a power system driven by a single propeller, the contra-rotating propellers consist of a pair of propellers which rotate in opposite directions, and can recover part of rotational kinetic energy from wake flow, so that the overall efficiency is improved.

However, since the power system needs to drive the two propellers to rotate in opposite directions, which increases the difficulty of the transmission scheme, the prior art generally adopts a transmission mechanism with a plurality of bearings, spur gears or bevel gears, etc. to realize the transmission of the contra-rotating propellers. However, these transmission mechanisms have high transmission noise, and have problems of wear and life of the transmission mechanism even in long-term operation.

SUMMERY OF THE UTILITY MODEL

The application provides a actuating mechanism, propeller and equipment on water to realize contra-rotating propeller's direct drive, noise abatement, increase of service life.

The application provides a actuating mechanism, actuating mechanism are used for the drive to the contra-rotating screw, and the contra-rotating screw includes: first screw and second screw, actuating mechanism includes: a housing; a first rotor disposed within the housing; the first rotating shaft is provided with a first front end and a first rear end which are oppositely arranged, the first rear end is fixedly connected with the first rotor, and the first front end extends out of the shell and is fixedly connected with the first propeller; a second rotor disposed within the housing; the second rotating shaft is coaxially arranged with the first rotating shaft and is provided with a second front end and a second rear end which are oppositely arranged, the second rear end of the second rotating shaft is fixedly connected with the second rotor, and the second front end of the second rotating shaft extends out of the shell and is fixedly connected with the second propeller; and the stator is fixedly arranged in the shell and is in electromagnetic fit with the first rotor and the second rotor so as to drive the first rotor to rotate along a first direction and drive the second rotor to rotate along a second direction, wherein the first direction is opposite to the second direction.

The application provides a propeller, and the propeller includes above-mentioned actuating mechanism.

The application provides a water equipment, water equipment includes above-mentioned propeller.

The first front end of the first rotating shaft fixedly connected with the first rotor extends out of the shell and is fixedly connected with the first propeller, so that the first rotor can drive the first propeller to rotate through the first rotating shaft; the second front end of a second rotating shaft fixedly connected with the second rotor extends out of the shell and is fixedly connected with the second propeller, so that the second rotor can drive the second propeller to rotate through the second rotating shaft; and the stator is electromagnetically matched with the first rotor and the second rotor, and the first rotor and the second rotor are driven to rotate along the opposite first direction and the second direction respectively, so that the first propeller and the second propeller rotate in the first direction and the second direction respectively, and therefore the driving mechanism can realize contra-rotation of the first propeller and the second propeller. Further, because of first screw is direct by first rotor drive, the second screw is direct by the drive of second rotor, therefore the actuating mechanism of this application can directly drive first screw and second screw to changeing, and do not need drive mechanism, can improve among the prior art transmission noise, wearing and tearing and life-span reduction scheduling problem that drive mechanism produced. Therefore, the direct drive of the contra-rotating propeller is realized, the noise is reduced, and the service life is prolonged.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a schematic structural diagram of an embodiment of a drive mechanism of the present application;

fig. 2 is a schematic structural view of a stator core in the embodiment of fig. 1;

FIG. 3 is a schematic structural diagram of an embodiment of the drive mechanism of the present application;

fig. 4 is a schematic structural view of a stator core in the embodiment of fig. 3;

FIG. 5 is a schematic structural diagram of an embodiment of the drive mechanism of the present application;

FIG. 6 is a schematic structural diagram of an embodiment of the drive mechanism of the present application;

FIG. 7 is a schematic structural diagram of an embodiment of the drive mechanism of the present application;

FIG. 8 is a schematic structural view of an embodiment of the propeller of the present application;

figure 9 is a schematic structural view of an embodiment of the water apparatus of the present application.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be noted that the following examples are only illustrative of the present application, and do not limit the scope of the present application. Likewise, the following examples are only some examples and not all examples of the present application, and all other examples obtained by a person of ordinary skill in the art without any inventive step are within the scope of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.

In the embodiments of the present application, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacted with the first and second features, or indirectly contacted with the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

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

The present application first provides a driving mechanism, as shown in fig. 1, fig. 1 is a schematic structural diagram of an embodiment of the driving mechanism of the present application. The drive mechanism 10 of the present embodiment is used for driving a contra-rotating propeller 100, and the contra-rotating propeller 100 includes: the driving mechanism 10 of the present embodiment includes: a housing 11, a first rotor 12, a first rotating shaft 13, a second rotor 14, a second rotating shaft 15, and a stator 160; the first rotor 12 is arranged in the housing 11, the first rotating shaft 13 has a first front end a1 and a first rear end b1 which are oppositely arranged, the first rear end b1 is fixedly connected with the first rotor 12, and the first front end a1 extends out of the housing 11 and is fixedly connected with the first propeller 101; the second rotor 14 is arranged in the housing 11, the second rotating shaft 15 is coaxially arranged with the first rotating shaft 13, the second rotating shaft 15 has a second front end a2 and a second rear end b2 which are oppositely arranged, the second rear end b2 is fixedly connected with the second rotor 14, and the second front end a2 extends out of the housing 11 and is fixedly connected with the second propeller 102; the stator 160 is fixedly disposed in the housing 11 and electromagnetically cooperates with the first rotor 12 and the second rotor 14 to drive the first rotor 12 to rotate in a first direction and to drive the second rotor 14 to rotate in a second direction, wherein the first direction is opposite to the second direction.

The stator 160 of the present embodiment is electromagnetically matched with the first rotor 12 to drive the first rotor 12 to rotate along the first direction, so that the first rotor 12 drives the first rotating shaft 13 to drive the first propeller 101 to rotate along the first direction; the stator 160 is electromagnetically coupled to the second rotor 14 to drive the second rotor 14 to rotate in a first direction opposite to the second direction, so that the second rotor 14 drives the second rotating shaft 15 to rotate the second propeller 102 in the second direction, i.e., the first propeller 101 and the second propeller 102 rotate in opposite directions. In addition, since the first propeller 101 is directly driven by the first rotor 12 and the second propeller 102 is directly driven by the second rotor 14, the driving mechanism 10 of the present embodiment can directly drive the first propeller 101 and the second propeller 102 to rotate in opposite directions without a transmission mechanism, thereby improving the problems of transmission noise, wear, shortened service life, and the like caused by the transmission mechanism in the prior art. Therefore, the present embodiment realizes direct driving of the contra-rotating propeller 100, reduces noise, and prolongs the life.

Optionally, the first rotating shaft 13 of the present embodiment is a hollow rotating shaft, the second rotating shaft 15 passes through the first rotating shaft 13, the second rear end b2 extends out of the first rear end b1 and is rotatably connected with the housing 11, and the second front end a2 extends out of the first front end a 1.

That is, the first rotating shaft 13 is enclosed outside the second rotating shaft 15, and two ends of the second rotating shaft 15 respectively extend out from two ends of the first rotating shaft 13, so that the second rotating shaft 15 is fixed with the housing 11 and the second propeller 102; in this way, the stability of the drive mechanism 100 and the second propeller 102 can be improved.

Optionally, the second rotor 14 of the present embodiment includes a first rotor portion 141 and a second rotor portion 142 connected to each other, the first rotor portion 141 is fixedly connected to the second rear end b2, and the second rotor portion 142 is connected to the first rotor portion 141 and is disposed around the stator 160.

The stator 160 is provided with a second coil winding 162, the second coil winding 162 is used for generating a magnetic field after being electrified, the second rotor part 142 is a magnet, and the second rotor part 142 is in electromagnetic fit with the second coil winding 162; the first rotor portion 141 is used to fixedly connect the second rotor portion 142 to the second rotating shaft 15.

The first rotor portion 141 and the second rotor portion 142 of the present embodiment are disposed in an L shape. The first rotor portion 141 is provided with a positioning through hole, the second rear end b2 passes through the positioning through hole, and an outer peripheral side wall of the second rear end b2 is fixedly matched with an inner peripheral side wall of the positioning through hole, so that the second rotor 14 can drive the second rotating shaft 15 to rotate; and the part of the second rotating shaft 15 penetrating through the positioning through hole extends to the housing 11 and is rotatably connected with the housing 11.

Optionally, the driving mechanism 10 of the present embodiment further includes: a first bearing 171 and a second bearing 172; wherein the first bearing 171 is connected between the first rotor portion 141 and the first rear end b 1; the second bearing 172 is connected between the first front end a1 and the second front end a 2. The first bearing 171 is used for realizing rotatable connection between the first rotor portion 141 and the first rear end b1, and the second bearing 172 is used for realizing rotatable connection between the first front end a1 and the second front end a 2; in this way, a rotatable connection between the second rotary shaft 15 and the first rotary shaft 13 and the first rotor 12 can be achieved.

In order to improve the stability of the first bearing 171, a first fixing member 1711 may be correspondingly disposed on the first rotor portion 141, and the first bearing 171 may be fixedly disposed between the first fixing member 1711 and the first rear end b 1.

In order to improve the mounting stability of the second bearing 172, a second fixing member 1721 may be further disposed between the first front end a1 and the second front end a2, the second fixing member 1721 is fixedly disposed with the first rotating shaft 13 or the second rotating shaft 15, and a side wall of the second bearing 172 extending along the radial direction thereof may be fixed on the second fixing member 1721.

Optionally, the driving mechanism 10 of the present embodiment further includes: fifth bearing 175 and sixth bearing 176; wherein the fifth bearing 175 is connected between the second rear end b2 and the housing 11; the sixth bearing 176 is connected between the first front end a1 and the housing 11. The fifth bearing 175 is used for realizing the rotatable connection between the second rotating shaft 15 and the housing 11, the sixth bearing 176 is used for realizing the rotatable connection between the first front end a1 and the housing 11, and the first rear end b1 is indirectly connected with the housing 11 through the first rotor part 141 and the second rear end b 2; in this way, a rotatable connection between the second rotation shaft 15 and the first rotation shaft 13 and the housing 11 can be achieved.

In order to improve the mounting stability of the fifth bearing 175, a limiting hole may be correspondingly formed in the inner wall of the housing 11, a portion of the fifth bearing 175 is fixed in the limiting hole, the inner wall of the limiting hole is tightly fitted to the peripheral sidewall of the second bearing 175, the vibration force of the fifth bearing 175 is transmitted to the housing 11, and the housing 11 transmits the vibration force to an external vibration-damping suspension device, thereby reducing the vibration of the first rotating shaft.

In order to improve the mounting stability of the sixth bearing 176, a first protruding portion 1761 may be correspondingly disposed on the housing 11, a first limiting groove may be formed between the first protruding portion 1761, a side wall of the housing 11, and an outer peripheral side wall of the first rotating shaft 13, and the sixth bearing 176 may be fixedly disposed in the first limiting groove.

Optionally, the housing 11 of the present embodiment is provided with an opening, and the first front end a1 extends from the opening to the outside of the housing 11, so that the first front end a1 is used as a load driving shaft of the driving mechanism 10 and is connected with the first propeller 101 outside the housing 11; the second front end a2 extends from the opening to the outside of the housing 11, so that the second front end a2 serves as another load driving shaft of the driving mechanism 10 and is connected to the second propeller 102 outside the housing 11.

Optionally, the driving mechanism 10 of the present embodiment further includes: a first seal 181 and a second seal 182; wherein, the first sealing element and 181 are arranged at the opening of the shell 11, and the first sealing element and 181 are in sealing fit with the side wall of the opening and the peripheral side wall of the first rotating shaft 13; the second sealing member 182 is disposed at the first front end a1, and is in sealing engagement with an inner wall of the first front end a1 and an outer peripheral side wall of the second rotating shaft 15.

In order to improve the stability of the installation of the first sealing element and 181, a second protruding portion 1811 may be correspondingly disposed on the housing 11, the second protruding portion 1811 extends from the outer wall of the housing 11 toward the first propeller 101 along the axial direction of the first rotating shaft 13, a second limiting groove is formed between the second protruding portion 1811 and the outer circumferential side wall of the first rotating shaft 13, and the first sealing element and 181 are fixedly disposed in the second limiting groove.

In order to improve the installation stability of the second sealing member and 182, the second sealing member and 182 may be fixedly connected to the second fixing member 1721.

In order to improve the stability of the stator 160, the fixing portion 19 extends from the inner wall of the housing 11, and the stator 160 is fixedly connected to the fixing portion 19 to achieve the fixed connection between the stator 160 and the housing 11.

Optionally, the stator 160 of the present embodiment has a first coil winding 161, a second coil winding 162 and a stator core 163, the first coil winding 161 and the second coil winding 162 are wound on the stator core 163, the first coil winding 161 is used for driving the first rotor 12 to rotate, and the second coil winding 162 is used for driving the second rotor 14 to rotate.

In an embodiment, as shown in fig. 2, fig. 2 is a schematic structural diagram of the stator core in the embodiment of fig. 1, the stator core 163 of this embodiment is provided with a first tooth portion a and a second tooth portion B, the first tooth portion a is surrounded outside the first rotor 12, the second rotor 14 is surrounded outside the second tooth portion B, the first coil winding 161 may be wound on the first tooth portion a, and the second coil winding 162 may be wound on the second tooth portion B.

In another embodiment, as shown in fig. 3 and 4, fig. 3 is a schematic structural diagram of an embodiment of the driving mechanism of the present application; fig. 4 is a schematic structural diagram of a stator core in the embodiment of fig. 3. The present embodiment differs from the above embodiments in that: the stator 160 of this embodiment has a first coil winding 161 and a second coil winding 162, the stator 160 has a first stator core 131 and a second stator core 132, the second stator core 132 is sleeved outside the first stator core 131, the first coil winding 161 is wound on the first stator core 131, the second coil winding 162 is wound on the second stator core 132, the first coil winding 161 is used for driving the first rotor 12 to rotate, and the second coil winding 162 is used for driving the second rotor 14 to rotate.

Specifically, the first stator core 131 is provided with a first tooth portion a, the second stator core 132 is provided with a second tooth portion B, the first tooth portion a is surrounded outside the first rotor 12, the second rotor 14 is surrounded outside the second tooth portion B, the first coil winding 161 may be wound on the first tooth portion a, and the second coil winding 162 may be wound on the second tooth portion B.

The stator is realized by one stator core and two groups of coil windings are wound on the stator core, and the stator is realized by two sleeved stator cores and one coil winding is wound on the stator core. The embodiment can reduce mutual interference among the coil windings and reduce the failure rate.

The present application further proposes a driving mechanism of another embodiment, as shown in fig. 5, fig. 5 is a schematic structural diagram of an embodiment of the driving mechanism of the present application. The present embodiment differs from the above embodiments in that: the first rotor 12 and the second rotor 14 of the above embodiment are sleeved along the radial direction of the stator 160, while the first rotor 12 and the second rotor 14 of the embodiment are arranged side by side along the axial direction of the stator 160, the inner wall of the casing 11 extends towards the direction close to the first rotating shaft 13 to form a connecting portion 501, and the first rear end of the first rotating shaft 13 is rotatably connected with one end of the connecting portion 501, which is far away from the casing 11.

The stator 160 of the present embodiment includes two stator cores 561 arranged side by side at intervals along the axial direction of the stator 160, and two coil windings 562 wound around the two stator cores 561.

A stator core 561, a coil winding 562 thereon, a first rotor 12, and a first rotating shaft 13 of the present embodiment form a driving assembly for driving the first propeller 101, and another stator core 561, a coil winding 562 thereon, a second rotor 14, and a second rotating shaft 15 form a driving assembly for driving the second propeller 102. Two drive assembly mutual independence of this embodiment, complementary interference can promote the radiating effect, improves the convenience of installation.

The bearing and seal structure of the present embodiment are described as follows:

optionally, the driving mechanism 10 of the present embodiment further includes: and a third bearing 571 connected between the connecting portion 501 and the first rear end b1, for rotatably connecting the first rear end b1 and the housing 11.

In order to improve the stability of the installation of the third bearing 571, a fixing member 5711 may be correspondingly disposed on the connecting portion 501 for fixedly connecting the third bearing 571 with the connecting portion 501.

Optionally, the driving mechanism 10 of the present embodiment further includes: and a fourth bearing 572 connected between the first front end a1 and the second front end a2 for rotatably connecting the first rotating shaft 13 and the second rotating shaft 15.

In order to improve the stability of the installation of the fourth bearing 572, a fixing piece 5721 may be further provided between the first front end a1 and the second front end a2, the fixing piece 5721 may be fixedly provided to the first rotating shaft 13 or the second rotating shaft 15, and a side wall of the fourth bearing 572 extending in the radial direction thereof may be fixed to the fixing piece 5721.

Optionally, the driving mechanism 10 of the present embodiment further includes: fifth bearing 175 and sixth bearing 176; wherein the fifth bearing 175 is connected between the second rear end b2 and the housing 11; the sixth bearing 176 is connected between the first front end a1 and the housing 11. Wherein, the fifth bearing 175 is used for realizing the rotatable connection between the second rotating shaft 15 and the housing 11, and the sixth bearing 176 is used for realizing the rotatable connection between the first front end a1 and the housing 11; in this way, a rotatable connection between the second rotation shaft 15 and the first rotation shaft 13 and the housing 11 can be achieved.

In order to improve the mounting stability of the fifth bearing 175, a limiting hole may be correspondingly formed in the inner wall of the housing 11, a part of the fifth bearing 175 is fixedly disposed in the limiting hole, the inner wall of the limiting hole is tightly fitted with the peripheral side wall of the fifth bearing 175, the vibration force of the fifth bearing 175 is transmitted to the housing 11, and the housing 11 transmits the vibration force to an external shock absorption suspension device, so as to reduce the vibration of the first shaft 13.

In order to improve the mounting stability of the sixth bearing 176, a first protruding portion 1761 may be correspondingly disposed on the housing 11, a first limiting groove may be formed between the first protruding portion 1761, a side wall of the housing 11, and an outer peripheral side wall of the first rotating shaft 13, and the sixth bearing 176 may be fixedly disposed in the first limiting groove.

Optionally, the housing 11 of the present embodiment is provided with an opening, and the first front end a1 extends from the opening to the outside of the housing 11, so that the first front end a1 is used as a load driving shaft of the driving mechanism 10 and is connected with the first propeller 101 outside the housing 11; the second front end a2 extends from the opening to the outside of the housing 11, so that the second front end a2 serves as another load driving shaft of the driving mechanism 10 and is connected to the second propeller 102 outside the housing 11.

Optionally, the driving mechanism 10 of the present embodiment further includes: a first seal 181 and a second seal 182; wherein, the first sealing element and 181 are arranged at the opening of the shell 11, and the first sealing element and 181 are in sealing fit with the side wall of the opening and the peripheral side wall of the first rotating shaft 13; the second sealing member 182 is disposed at the first front end a1, and is in sealing engagement with the inner wall of the first front end a1 and the outer peripheral side wall of the second rotating shaft 15.

In order to improve the stability of the first sealing element 181 and the installation, a second protrusion 1811 may be correspondingly disposed on the housing 11, the second protrusion 1811 extends from the outer wall of the housing 11 toward the first propeller 101 along the axial direction of the first rotating shaft 13, a second limiting groove is formed between the second protrusion 1811 and the outer peripheral side wall of the first rotating shaft 13, and the first sealing element 181 is fixedly disposed in the second limiting groove.

In order to improve the installation stability of the second sealing member 182, the second sealing member 182 may be fixedly connected to the second fixing member 1721.

It should be noted that other descriptions of the components of the present embodiment or other components may be referred to the above embodiments correspondingly.

In another embodiment, as shown in fig. 6, fig. 6 is a schematic structural diagram of an embodiment of the driving mechanism of the present application. The drive mechanism 10 of the present embodiment differs from the drive mechanism 10 of the embodiment of fig. 5 in that: the fourth bearing 572 of the present embodiment is connected between the second rear end b2 and the connecting portion 501.

In order to improve the stability of the installation of the fourth bearing 572, a fixing member 61 may be correspondingly provided on the connecting portion 501 for fixing the fourth bearing 572 to the connecting portion 501.

It is noted that, in the embodiment of fig. 5, the second rotating shaft 15 is rotatably connected to the housing 11 through the fifth bearing 175 and rotatably connected to the first rotating shaft 13 through the fourth bearing 572, while in the embodiment of fig. 6, the second rotating shaft 15 is rotatably connected to the housing 11 through the fifth bearing 175 and rotatably connected to the connecting portion 501 of the housing 11 through the fourth bearing 572.

In this embodiment, the bearing position of the fourth bearing 572 in the embodiment of fig. 5 is moved from the original side close to the first propeller 101 toward the direction away from the first propeller 101, and is located in the middle of the second rotating shaft 15, so that the structural symmetry in the housing 11 is better, the stress is more uniform, and the service life of the driving mechanism can be prolonged.

It should be noted that other descriptions of the components of the present embodiment or the other components may be referred to the above embodiments correspondingly.

In another embodiment, as shown in fig. 7, fig. 7 is a schematic structural diagram of an embodiment of the driving mechanism of the present application. The drive mechanism 10 of the present embodiment differs from the drive mechanism 10 of the embodiment of fig. 6 in that: in this embodiment, a third sealing member 682 is provided to be in sealing engagement with the first rear end b1 and the outer peripheral sidewall of the second rotating shaft 15.

In this embodiment, the position of the second sealing member 182 disposed between the inner wall of the first front end a1 and the outer peripheral side wall of the second rotating shaft 15 in fig. 6 is changed, the position of the second sealing member 182 is moved from the original side close to the first propeller 101 toward the direction away from the first propeller 101, and is located in the middle of the second rotating shaft 15, so that the contact area between the driving mechanism and the propeller and water can be increased, the heat generated during the operation of the driving mechanism 10 and the propeller can be dissipated in time, and the cooling effect is enhanced.

It should be noted that other descriptions of the components of the present embodiment or the other components may be referred to the above embodiments correspondingly.

The above-mentioned seal of the present application may be an oil seal or the like.

It is worth noting that, because the driving working environment is underwater, oil seals are required to be added at the first rotating shaft and the second rotating shaft, so that water is prevented from entering the driving mechanism to influence the normal operation of the propeller.

The present application further provides a propeller, as shown in fig. 8, fig. 8 is a schematic structural diagram of an embodiment of the propeller of the present application. The propeller 80 of the present embodiment includes a driving mechanism 10 and a contra-rotating propeller 100 connected to the driving mechanism 10. The specific structure and operation principle of the driving mechanism 10 and the contra-rotating propeller 100 can be referred to the above embodiments.

The propeller 80 of the present embodiment includes: a driver 82 and a rudder 84. Wherein, the rudder 84 is electrically connected with the driver 82 for sending a steering signal to the driver 82 based on the operation of the user; the driver 82 is electrically connected to the driving mechanism 10 for driving the driving mechanism 10 to operate, so that the driving mechanism 10 drives the contra-rotating propeller 100 to rotate. It is understood that the driving mechanism 10 is disposed on the top of the propeller 80, the crp 100 is disposed on the bottom of the propeller 80, and the propeller 80 further includes a transmission assembly 110 connecting the driving mechanism 10 and the crp 100. The transmission assembly 110 is composed of a rotary shaft group and a bevel gear group to transmit the counter-rotating torque of the driving mechanism 10 to the counter-rotating propeller 100.

Further, the propeller 80 may further include a housing 801 and a heat sink 803, etc., and the driver 82, etc. are provided in the housing 801. A heat sink 803 is disposed within the housing 801 and adjacent to the drive mechanism 10 and the driver 82 for dissipating heat from the drive mechanism 10 and the driver 82.

The present application further provides a water device 90, as shown in fig. 9, fig. 9 is a schematic structural diagram of an embodiment of the water device of the present application. The marine device 90 of the present embodiment is a commercial boat, passenger boat, yacht, sail boat, fishing boat, kayak, or the like. The marine installation 90 of this embodiment comprises a propeller 80 and a hull 92. The propeller 80 is mounted on the boat body 92. The structure and operation of the propeller 80 can be seen from the above-described embodiments.

Further, the water equipment 90 of the embodiment further includes a control mechanism 93, a driving mechanism 94, a power supply 95 and the like, all of which are disposed on the boat body 92; the driving mechanism 94 is respectively connected with the control mechanism 93 and the propeller 80, and the control mechanism 93 controls the driving mechanism 94 to work so as to drive the propeller 80 to work; the power source 95 is connected to the propeller 80 and the control mechanism 94, respectively, and supplies power to the propeller 80, the control mechanism 94, and the like.

The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims (15)

1. A drive mechanism for driving a contra-rotating propeller, the contra-rotating propeller comprising: first screw and second screw, actuating mechanism includes:

a housing;

a first rotor disposed within the housing;

the first rotating shaft is provided with a first front end and a first rear end which are oppositely arranged, the first rear end is fixedly connected with the first rotor, and the first front end extends out of the shell and is fixedly connected with the first propeller;

a second rotor disposed within the housing;

the second rotating shaft is coaxially arranged with the first rotating shaft and is provided with a second front end and a second rear end which are oppositely arranged, the second rear end of the second rotating shaft is fixedly connected with the second rotor, and the second front end of the second rotating shaft extends out of the shell and is fixedly connected with the second propeller;

the stator is fixedly arranged in the shell and is in electromagnetic fit with the first rotor and the second rotor so as to drive the first rotor to rotate along a first direction and drive the second rotor to rotate along a second direction, wherein the first direction is opposite to the second direction.

2. The driving mechanism as claimed in claim 1, wherein the first shaft is a hollow shaft, the second shaft passes through the first shaft, and a second rear end of the second shaft extends beyond a first rear end of the first shaft and is rotatably connected to the housing, and a second front end of the second shaft extends beyond a first front end of the first shaft.

3. The driving mechanism as claimed in claim 1, wherein the stator has a first coil winding, a second coil winding and a stator core, the first coil winding and the second coil winding are wound on the stator core, the first coil winding is configured to drive the first rotor to rotate, and the second coil winding is configured to drive the second rotor to rotate.

4. The driving mechanism as claimed in claim 1, wherein the stator has a first coil winding and a second coil winding, the stator has a first stator core and a second stator core, the second stator core is disposed outside the first stator core, the first coil winding is disposed on the first stator core, the second coil winding is disposed on the second stator core, the first coil winding is configured to drive the first rotor to rotate, and the second coil winding is configured to drive the second rotor to rotate.

5. The driving mechanism as claimed in claim 2, wherein the second rotor includes a first rotor portion and a second rotor portion connected to each other, the first rotor portion is fixedly connected to the second rear end of the second rotating shaft, and the second rotor portion is connected to the first rotor portion and is disposed around the stator.

6. The drive mechanism as recited in claim 5, further comprising:

a first bearing connected between the first rotor portion and the first rear end;

a second bearing connected between the first front end and the second front end.

7. The driving mechanism as claimed in claim 2, wherein the first rotor and the second rotor are spaced side by side along the axial direction of the stator, the inner wall of the housing is provided with a connecting portion extending towards the direction close to the first rotating shaft, and the first rear end is rotatably connected with one end of the connecting portion, which is far away from the housing.

8. The drive mechanism as recited in claim 7, further comprising:

a third bearing connected between the connecting portion and the first rear end.

9. The drive mechanism as recited in claim 7, further comprising:

and the fourth bearing is connected between the first front end and the second front end or between the second rear end and the connecting part.

10. The drive mechanism as recited in claim 5 or 7, further comprising:

a fifth bearing connected between the second rear end and the housing;

a sixth bearing connected between the first front end and the housing.

11. The drive mechanism as recited in claim 2, wherein the housing defines an opening, and wherein the first front end of the first shaft and the second front end of the second shaft extend from the opening to outside the housing.

12. The drive mechanism as recited in claim 11, further comprising:

the first sealing element is arranged at the opening of the shell and is in sealing fit with the side wall of the opening and the peripheral side wall of the first rotating shaft;

and the second sealing element is arranged at the first front end and is in sealing fit with the inner wall of the first front end and the peripheral side wall of the second rotating shaft.

13. The drive mechanism as recited in claim 7, wherein the housing defines an opening, the first front end of the first shaft and the second front end of the second shaft extending from the opening to outside the housing;

the drive mechanism further includes:

the first sealing element is arranged at the opening of the shell and is in sealing fit with the side wall of the opening and the peripheral side wall of the first rotating shaft;

and the third sealing element is in sealing fit with the first rear end of the first rotating shaft and the peripheral side wall of the second rotating shaft.

14. A propeller, comprising: the drive mechanism of any one of claims 1 to 13 and the contra-rotating propeller.

15. A water apparatus, comprising: the propeller of claim 14.

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