Water area propeller and water area movable equipment

Abstract

The utility model relates to the technical field of ship power, and discloses a water area propeller and a water area movable device, the water area propeller comprises a steering motor, a driving mechanism and a control mechanism; the driving mechanism comprises a connecting spindle and a propelling power device, one end of the connecting spindle is connected with the propelling power device, the other end of the connecting spindle penetrates through the bottom of the water area carrier and is located in the water area carrier, the steering motor sleeves the connecting spindle and is used for directly driving the connecting spindle to rotate, and the connecting spindle is used for driving the propelling power device to steer relative to the water area carrier; a channel penetrating in the length direction of the connecting main shaft is arranged in the connecting main shaft, a connecting line is arranged in the channel, the control mechanism is located in the water area carrier and connected with one end of the connecting line, the other end of the connecting line is connected with the propelling power device, and the control mechanism transmits electric signals and driving current to the propelling power device through the connecting line. The control mechanism is further electrically connected with the steering motor to control the steering motor to drive the connecting spindle to rotate.

Description

Technical Field

[0001] This utility model relates to the field of marine power technology, and in particular to a water propulsion device and a water-mobile device. Background Technology

[0002] Currently in the boat industry, with the development of new energy technologies, the requirements for the intelligence of boat equipment are constantly increasing. At the same time, the complex underwater environment also means that the adjustment of POD (Podded Propulsor) should not only meet the requirements of sailing speed, but also have a flexible and adjustable steering system. This will allow the operator to flexibly switch the course under the premise of power control, thereby improving the user experience and driving pleasure.

[0003] In the prior art, podded propulsion systems either drive the steering of the podded propulsion system through a steering wheel and hydraulic actuator, or drive the steering rudder through a hydraulic propulsion system. However, the steering system cannot directly act on the main shaft, and the complex transmission increases the risk of damage. Utility Model Content

[0004] The purpose of this invention is to provide a water propulsion device and a water-mobile device to solve the technical problem of increased damage risk in the prior art.

[0005] To solve the above-mentioned technical problems, this utility model provides a water propulsion device, including a steering motor, a drive mechanism and a control mechanism;

[0006] The drive mechanism includes a connecting main shaft and a propulsion power device. One end of the connecting main shaft is connected to the propulsion power device, which is used to output propulsion power outside the bottom of the water carrier. The other end of the connecting main shaft passes through the bottom of the water carrier and is located inside the water carrier. The steering motor is sleeved on the connecting main shaft and is used to directly drive the connecting main shaft to rotate. The connecting main shaft is used to drive the propulsion power device to turn relative to the water carrier.

[0007] The connecting main shaft has a channel running through it along its length. A connecting line is installed in the channel. The control mechanism is located inside the water carrier and is connected to one end of the connecting line. The other end of the connecting line is connected to the propulsion power device. The control mechanism transmits electrical signals and drive current to the propulsion power device via the connecting line. The control mechanism is also electrically connected to the steering motor to control the steering motor to drive the connecting main shaft to rotate.

[0008] In an optional embodiment, the control mechanism includes a steering controller and a steering conductor, the steering conductor being connected to the steering controller and the steering motor respectively, and the steering controller being used to control the movement of the steering motor through the steering conductor.

[0009] In an optional embodiment, the propulsion power unit includes a motor, a propeller, and an underwater hull. The underwater hull is fixed to the connecting main shaft, and the motor is housed within the underwater hull. The motor is electrically connected to the connecting line, and one end of the motor's shaft is connected to the propeller shaft.

[0010] In an optional embodiment, the control mechanism further includes a propulsion controller, the connecting line includes a motor signal line, the propulsion controller is fixed on the water carrier, and the propulsion controller transmits control signals to the motor through the motor signal line;

[0011] The water propulsion device also includes a battery fixed inside the water carrier, the control mechanism also includes a current converter, the connecting line also includes a conductive cable, the current converter is fixed inside the water carrier, and the current converter is used to convert the DC output of the battery to the motor.

[0012] In an optional embodiment, a brake component is also included. The brake component is disposed on one side of the steering motor and sleeved on the connecting main shaft. The brake component is connected to both the connecting main shaft and the water carrier, and is used to fix the connecting main shaft and the water carrier.

[0013] In an optional embodiment, a seal is also included, which is connected to the water carrier and is slidably connected to the connecting spindle.

[0014] In an optional implementation, the steering motor includes a rotor and a stator;

[0015] The rotor is sleeved on the connecting main shaft, and the stator is fixed on the water carrier. The rotor and the stator are arranged opposite to each other, and the rotor drives the connecting main shaft to rotate relative to the stator.

[0016] In an optional embodiment, a bearing is provided on each side of the rotor, both bearings are sleeved on the connecting main shaft, and the outer walls of the two bearings are fixed to the water carrier.

[0017] This utility model also provides a water-based mobile device, including a water-based carrier and the water-based propulsion device. A fixed platform is provided inside the water-based carrier, and the connecting main shaft, the steering motor and the control mechanism are installed on the fixed platform.

[0018] In an optional implementation, a fixing cover is also included;

[0019] The fixing cover is sleeved on the connecting main shaft, the fixing cover is located on one side of the steering motor, and the fixing cover is connected to the fixing platform.

[0020] This utility model provides a water propulsion device, including a steering motor, a drive mechanism, and a control mechanism. The drive mechanism includes a connecting main shaft and a propulsion power device. One end of the connecting main shaft is connected to the propulsion power device, which outputs propulsion power outside the bottom of the water carrier. The other end of the connecting main shaft passes through the bottom of the water carrier and is located inside the water carrier. The steering motor is sleeved on the connecting main shaft and is used to directly drive the connecting main shaft to rotate. The connecting main shaft is used to drive the propulsion power device to turn relative to the water carrier. A channel is provided inside the connecting main shaft along its length. A connecting wire is provided in the channel. The control mechanism is located inside the water carrier and is connected to one end of the connecting wire. The other end of the connecting wire is connected to the propulsion power device. The control mechanism transmits electrical signals and drive current to the propulsion power device through the connecting wire. The control mechanism is also electrically connected to the steering motor to control the steering motor to drive the connecting main shaft to rotate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the water propulsion device mentioned in the embodiments of this utility model;

[0022] Figure 2 for Figure 1 Side view;

[0023] Figure 3 for Figure 1 Top view;

[0024] Figure 4 for Figure 1 A sectional view;

[0025] Figure 5 for Figure 4 A partially enlarged structural diagram.

[0026] In the diagram, 1-water propulsion device; 10-steering motor; 101-rotor; 102-stator; 103-bearing; 20-drive mechanism; 201-connecting main shaft; 202-propulsion power unit; 2021-motor; 2022-propeller; 2023-underwater hull; 30-control mechanism; 301-steering controller; 302-propulsion controller; 303-steering conductive line; 40-brake component; 401-first brake pad; 402-second brake pad; 50-seal; 60-motor signal line; 2-water mobile device; 70-water carrier; 80-fixed platform; 90-fixed cover; 3-cavity; 4-through hole. Detailed Implementation

[0027] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] In related technologies, podded propulsion systems either drive the podded propulsion system to steer via a steering wheel and hydraulic actuator, or drive the steering rudder via a hydraulic propulsion system. However, the steering system cannot directly act on the main shaft, and the complex transmission increases the risk of damage.

[0030] In view of this, such as Figures 1-5 As shown, some embodiments of this utility model provide a water propulsion device 1, including a steering motor 10, a drive mechanism 20, and a control mechanism 30. The drive mechanism 20 includes a connecting main shaft 201 and a propulsion power device 202. One end of the connecting main shaft 201 is connected to the propulsion power device 202, which outputs propulsion power outside the bottom of the water carrier 70. The other end of the connecting main shaft 201 passes through the bottom of the water carrier 70 and is located inside the water carrier 70. The steering motor 10 is sleeved on the connecting main shaft 201 and connected to the water carrier 70, for directly driving the connecting main shaft 201. The connecting main shaft 201 rotates relative to the water carrier 70, and drives the propulsion power device 202 to turn relative to the water carrier 70. A channel running through the connecting main shaft 201 along its length is provided inside the connecting main shaft 201. A connecting line is provided inside the channel. The control mechanism 30 is located inside the water carrier 70 and is connected to one end of the connecting line. The other end of the connecting line is connected to the propulsion power device 202. The control mechanism 30 transmits electrical signals and drive current to the propulsion power device 202 through the connecting line. The control mechanism 30 is also electrically connected to the steering motor 10 to control the steering motor 10 to drive the connecting main shaft 201 to rotate.

[0031] In the above embodiments, such as Figures 1 to 5As shown, the connecting main shaft 201 can be arranged vertically, can be made of metal, and can be cylindrical. The propulsion power device 202 can be installed at the end of the connecting main shaft 201 that extends underwater. The propulsion power device 202 can provide driving force to the water carrier 70. The connecting main shaft 201 is hollow inside, that is, it has a channel that runs through it along the axial direction. The cross-section of the channel can be circular. The connecting main shaft 201 passes through the water carrier 70 and is connected to the steering motor 10 fixed on the water carrier 70, so that the steering motor 10 can directly... The drive shaft 201 rotates relative to the water carrier 70, thereby changing the direction of the propulsion power unit 202 and the heading of the water carrier 70. The end of the drive shaft 201 away from the propulsion power unit 202 passes through the steering motor 10 and enters the carrying space of the water carrier 70, so that the control mechanism 30 located in the carrying space of the water carrier 70 can extend into the channel through the connecting line. The connecting line can be connected to the underwater propulsion power unit 202, so that the control mechanism 30 can control the propulsion power unit 202 through the connecting line and realize the start and stop of the propulsion power unit 202.

[0032] The steering motor 10 directly drives the main shaft 201 to rotate, and the connecting wire passes through the end of the main shaft 201 axially, which can reduce the rotation amplitude of the connecting wire, avoid excessive twisting and damage to the connecting wire, and reduce the failure rate.

[0033] The steering motor 10 is mounted on the connecting spindle 201, reducing the transmission mechanism and optimizing the internal space of the water carrier 70. The direct drive of the steering motor 10 to the connecting spindle 201 increases the steering rate of the connecting spindle 201, allowing for rapid adjustment of the propulsion power unit to the target heading angle. A dynamic seal is used between the connecting spindle 201 and the bottom of the water carrier to prevent water from outside the water carrier from seeping into it.

[0034] Furthermore, the control mechanism 30 is also electrically connected to the steering motor 10. The control mechanism 30 can also be connected to the steering motor 10 via wired or wireless means. The steering motor 10 can be a brushless motor. The control mechanism 30 can control the rotation angle of the steering motor 10 and control the start and stop of the steering motor 10. Thus, the output angle of the propulsion power device 202 can be controlled through the steering motor 10 to achieve the purpose of adjusting the movement direction of the water carrier 70.

[0035] In this embodiment, the steering motor 10 can obtain power from the auxiliary battery in the water carrier 70. The steering motor 10 can share a battery with the propulsion power device 202 to obtain power, or the steering motor 10 can use a separate battery to obtain power. The propulsion power device 202 is equipped with a motor 2021, and the propulsion power device 202 uses the motor 2021 to output propulsion power.

[0036] In an optional embodiment, the control mechanism 30 includes a steering controller 301 and a steering conductor 303. The steering conductor 303 is connected to the steering controller 301 and the steering motor 10, respectively. The steering controller 301 is used to control the movement of the steering motor 10 through the steering conductor 303.

[0037] In the above embodiments, such as Figure 1 and Figure 3 As shown, the steering controller 301 can be a PLC. The steering controller 301 can be fixed inside the water carrier 70. The steering controller 301 can be electrically connected to the steering motor 10 through the steering conductive wire 303. The steering motor 10 can directly drive the connected spindle 201 to rotate. Thus, the steering controller 301 can control the rotation of the connected spindle 201 according to the usage scenario or the operator's instructions, so that the movement angle of the water carrier 70 can be changed. Furthermore, a cable for providing power to the steering motor 10 and the steering controller 301 is connected to the steering motor 10. One end of the cable can be connected to a battery, and the other end is connected to the steering motor 10 and the steering controller 301 respectively.

[0038] In an optional embodiment, the propulsion power unit 202 includes a motor 2021, a propeller 2022, and an underwater hull 2023. The underwater hull 2023 is fixed to the connecting main shaft 201. The motor 2021 is housed within the underwater hull 2023 and is electrically connected to a connecting line. One end of the motor 2021's shaft is connected to the shaft of the propeller 2022. The motor 2021 can also be connected to the propeller via a reducer. In some other embodiments, the motor 2021 may also be located within the connecting main shaft 201, with the motor's drive shaft passing through the connecting main shaft 201, and the motor connected to the propeller 2022 for rotation via a transmission mechanism.

[0039] In the above embodiments, such as Figure 2 As shown, the underwater hull 2023 has a space for accommodating the motor 2021 and a bracket for fixing the motor 2021. The motor 2021 can be connected to the battery via a connecting cable. When the underwater hull 2023 is connected to the connecting spindle 201, the space inside the underwater hull 2023 is connected to the channel inside the connecting spindle 201, so that the connecting cable through the channel can be connected to the motor 2021. At the same time, after the underwater hull 2023 is connected to the connecting spindle 201, the rotating shaft end of the motor 2021 can extend through one side of the underwater hull 2023 and connect to the propeller 2022.

[0040] In an optional embodiment, the control mechanism 30 further includes a propulsion controller 302, and the connecting line includes a motor signal line 60. The propulsion controller 302 is fixed on the water carrier 70, and the propulsion controller 302 transmits control signals to the motor 2021 through the motor signal line 60. The water propulsion unit 1 also includes a battery fixed inside the water carrier 70. The control mechanism 30 also includes a current converter, and the connecting line includes a conductive cable. The current converter is fixed inside the water carrier 70 and is used to convert the DC output of the battery to the motor 2021.

[0041] In the above embodiments, such as Figure 3 and Figure 4 As shown, the propulsion controller 302 can be fixed inside the water carrier 70. The propulsion controller 302 transmits electrical signals to the underwater motor 2021 through the motor signal line 60 to control the rotation speed, start and stop, and forward and reverse rotation of the motor 2021. A battery is also installed in the carrying space of the water carrier 70. The battery can reach the underwater motor 2021 through the channel connecting the main shaft 201 via a conductive cable and connect to the motor 2021, so that the motor 2021 can be powered through the battery and the conductive cable. A current converter can also be installed inside the water carrier 70. The current converter can be set on the conductive cable to convert the current flowing out of the battery.

[0042] In an optional embodiment, a brake component 40 is also included. The brake component 40 is disposed on one side of the steering motor 10 and is sleeved on the connecting spindle 201. The brake component 40 is connected to both the connecting spindle 201 and the water carrier 70. The brake component 40 is used to fix the connecting spindle 201 and the water carrier 70 when a braking command is received. The braking command can be output via a controller or directly via a control console on the water carrier.

[0043] In the above embodiments, such as Figure 5As shown, the brake component 40 is located on the side of the steering motor 10 facing away from the bottom of the water. The brake component 40 includes a first brake pad 401 and a second brake pad 402. The first brake pad 401 and the second brake pad 402 are arranged in parallel. The first brake pad 401 is fixedly connected to the water carrier 70, and the second brake pad 402 is connected to the connecting spindle 201. In the non-braking state, the first brake pad 401 and the second brake pad 402 are spaced apart. The connecting spindle 201 drives the second brake pad 402 to rotate relative to the first brake pad 401. At this time, the first brake pad 401 and the second brake pad 402 do not affect each other. The second brake pad 402 on the connecting spindle 201 can be connected to the connecting spindle 201 through a spline, so that the second brake pad 402 can reciprocate along the length direction of the connecting spindle 201. The second brake pad 402 is slidably arranged relative to the connecting spindle 201 along the axial direction of the connecting spindle 201, so that the second brake pad 402 can move closer to or further away from the first brake pad 401. In some embodiments, the sliding of the second brake pad 402 towards or away from the first brake pad 401 can be achieved via a solenoid valve. Specifically, an electromagnetic actuator is provided within the water carrier 70, and a magnet is provided on the second brake pad 402. When the electromagnetic actuator is energized, it outputs a magnetic field with the same magnetic properties as the magnet, attracting the second brake pad 402 towards the first brake pad 401, thereby stopping the first brake pad 401 and the second brake pad 402 in a braking state. When the electromagnetic actuator is energized, it outputs a magnetic field with the opposite magnetic properties to the magnet, driving the second brake pad 402 away from the first brake pad 401, thereby disengaging the first brake pad 401 and the second brake pad 402 from the braking state.

[0044] Optional, such as Figure 5 As shown, the second brake pad 402 can be fixedly connected to the connecting spindle 201, and the first brake pad 401 is connected to the water carrier 70. The water carrier 70 is provided with an actuator that drives the first brake pad 401 to move axially along the connecting spindle 201, so that the first brake pad 401 can move closer to or further away from the second brake pad 402. When the first brake pad 401 approaches and presses against the second brake pad 402, the first brake pad 401 and the second brake pad 402 are firmly connected, thereby fixing the connecting spindle 201 and the water carrier 70.

[0045] In an optional embodiment, a seal 50 is also included, which is connected to the water carrier 70 and is slidably connected to the connecting spindle 201.

[0046] In the above embodiments, such as Figure 5As shown, the seal 50 may include a sealing ring. The seal 50 may be made of rubber and may be fixedly installed inside the water carrier 70. The seal 50 may be embedded in the water carrier 70 and may be annular. The inner diameter of the seal 50 is attached to and connected to the surface of the connecting spindle 201. The seal 50 is pressed against the surface of the connecting spindle 201, so that the seal 50 and the surface of the connecting spindle 201 are tightly connected. Thus, when the connecting spindle 201 rotates, it can rotate relative to the seal 50 while maintaining a seal. In this way, the seal 50 can seal the gap between the connecting spindle 201 and the water carrier 70, preventing water from entering the bearing space through the gap between the connecting spindle 201 and the water carrier 70.

[0047] In an optional embodiment, the steering motor 10 includes a rotor 101 and a stator 102; the rotor 101 is sleeved on the connecting main shaft 201, and the stator 102 is fixed on the water carrier 70. The rotor 101 and the stator 102 are arranged opposite to each other, and the rotor 101 drives the connecting main shaft 201 to rotate relative to the stator 102.

[0048] In the above embodiments, such as Figure 4 and Figure 5 As shown, the rotor 101 can be embedded in the stator 102 and can be sleeved on the outer diameter of the connecting main shaft 201. The rotor 101 is fixedly connected to the connecting main shaft 201, while the stator 102 is spaced apart from the rotor 101 and coaxially arranged. The steering controller 301 can be connected to the coil wound on the stator 102 through the steering conductive line 303, thereby driving the rotation of the connecting main shaft 201 through the rotor 101, controlling the working direction of the propulsion power device 202, and thus controlling the movement direction of the water carrier 70.

[0049] In an optional embodiment, a bearing 103 is provided on each side of the rotor 101, and both bearings 103 are sleeved on the connecting main shaft 201. The outer walls of the two bearings 103 are fixed to the water carrier 70. The bearings 103 can be thrust ball bearings, thrust tapered roller bearings, angular contact ball bearings, or other bearings that can withstand both axial and radial loads.

[0050] In the above embodiments, such as Figure 5 As shown, two bearings 103 are respectively sleeved on the connecting main shaft 201 and spaced apart. A rotor 101 is arranged between the two bearings 103. The inner diameter of the two bearings 103 is tightly connected to the outer diameter of the connecting main shaft 201. The outer diameter of the two bearings 103 is fixed in the water carrier 70. Thus, the relative rotation between the connecting main shaft 201 and the water carrier 70 can be made smoother through the two bearings 103.

[0051] Furthermore, the two bearings 103 can be fixed in the fixed platform 80 respectively. The fixed platform 80 is provided with a step, and the bearing 103 abuts against the step of the fixed platform 80. Alternatively, the bearing 103 can be connected by pressing the inner wall of the through hole 4 of the fixed platform 80, so that the bearing 103 and the fixed platform 80 are firmly connected. Furthermore, one bearing 103 can be fixed in the fixed platform 80, and the other bearing 103 can be fixed on the side of the fixed cover 90 facing the motor 2021. The other bearing 103 can be connected to the fixed cover 90 by welding. Each seal 50 is provided on the side of the bearing 103 away from the stator 102. The seal 50 can be fixed on the fixed platform 80 or fixed on the fixed cover 90. The seal 50 can be connected to the fixed cover 90 by adhesive.

[0052] Some embodiments of this utility model also provide a water-based mobile device 2, including a water-based carrier 70 and a water-based thruster 1. A fixed platform 80 is provided inside the water-based carrier 70, and a connecting main shaft 201, a steering motor 10 and a control mechanism 30 are mounted on the fixed platform 80.

[0053] In the above embodiments, such as Figure 3 and Figure 4 As shown, the bottom of the water carrier 70 is provided with a through hole 4, which can be set perpendicular to the bottom of the water carrier 70. The connecting main shaft 201 passes through the through hole 4. A fixed platform 80 is provided inside the water carrier 70. The fixed platform 80 can be made of metal. The through hole 4 extends into the fixed platform 80. The side wall of the through hole 4 in the fixed platform 80 has an annular groove. Multiple grooves can be provided, and the multiple grooves are arranged at intervals along the length direction of the connecting main shaft 201. A seal 50 can be fixed in each groove, or a seal 50 can be fixed in some grooves and a bearing 103 can be fixed in other grooves. The fixed platform 80 can be rectangular. A steering motor 10, a propulsion controller 302, and a steering controller 301 can be installed on the fixed platform 80.

[0054] In an optional embodiment, a fixing cover 90 is also included; the fixing cover 90 is sleeved on the connecting spindle 201, the fixing cover 90 is located on one side of the steering motor 10, and the fixing cover 90 is connected to the fixing platform 80.

[0055] In the above embodiments, such as Figure 3 and Figure 5As shown, the fixing cover 90 can be made of metal and can be circular. The fixing cover 90 is fitted onto the connecting spindle 201, allowing the connecting spindle 201 to pass through the fixing cover 90. The fixing cover 90 can be connected to the fixing platform 80 by bolts. A bearing 103 can be installed on the fixing cover 90. The fixing cover 90 can seal the steering motor 10 to prevent water from entering the steering motor 10. At the same time, the fixing cover 90 can also facilitate the maintenance of the steering motor 10. The fixing platform 80 has a cavity 3 on the side near the fixing cover 90. The cavity 3 is connected to the through hole 4. The stator 102 is fixedly installed in the cavity 3. The fixing cover 90 is placed on the cavity 3, thereby covering the stator 102 and the rotor 101.

[0056] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A water propulsion device, characterized in that, Includes steering motor, drive mechanism and control mechanism; The drive mechanism includes a connecting main shaft and a propulsion power device. One end of the connecting main shaft is connected to the propulsion power device, which outputs propulsion power outside the bottom of the water carrier. The other end of the connecting main shaft passes through the bottom of the water carrier and is located inside the water carrier. The steering motor is sleeved on the connecting main shaft and connected to the water carrier, and is used to directly drive the connecting main shaft to rotate relative to the water carrier. The connecting main shaft is used to drive the propulsion power device to turn relative to the water carrier. The connecting main shaft has a channel running through it along its length. A connecting line is installed in the channel. The control mechanism is located inside the water carrier and is connected to one end of the connecting line. The other end of the connecting line is connected to the propulsion power device. The control mechanism transmits electrical signals and drive current to the propulsion power device via the connecting line. The control mechanism is also electrically connected to the steering motor to control the steering motor to drive the connecting main shaft to rotate.

2. The water propulsion device according to claim 1, characterized in that, The control mechanism includes a steering controller and a steering conductor. The steering conductor is connected to the steering controller and the steering motor, respectively. The steering controller is used to control the movement of the steering motor through the steering conductor.

3. The water propulsion device according to claim 1, characterized in that, The propulsion power unit includes a motor, a propeller, and an underwater hull. The underwater hull is fixed to the connecting main shaft, and the motor is housed within the underwater hull. The motor is electrically connected to the connecting line, and one end of the motor's rotating shaft is connected to the propeller shaft.

4. The water propulsion device according to claim 3, characterized in that, The control mechanism also includes a propulsion controller, the connecting line includes a motor signal line, the propulsion controller is fixed on the water carrier, and the propulsion controller transmits control signals to the motor through the motor signal line; The water propulsion device also includes a battery fixed inside the water carrier, the control mechanism also includes a current converter, the connecting line also includes a conductive cable, the current converter is fixed inside the water carrier, and the current converter is used to convert the DC output of the battery to the motor.

5. The water propulsion device according to claim 1, characterized in that, It also includes a brake component, which is disposed on one side of the steering motor and sleeved on the connecting main shaft. The brake component is connected to the connecting main shaft and the water carrier respectively, and is used to fix the connecting main shaft and the water carrier when a braking command is received.

6. The water propulsion device according to claim 1, characterized in that, It also includes a seal that is connected to the water carrier and is slidably connected to the connecting main shaft.

7. The water propulsion device according to claim 1, characterized in that, The steering motor includes a rotor and a stator; The rotor is sleeved on the connecting main shaft, and the stator is fixed on the water carrier. The rotor and the stator are arranged opposite to each other, and the rotor drives the connecting main shaft to rotate relative to the stator.

8. The water propulsion device according to claim 7, characterized in that, A bearing is provided on each side of the rotor, and both bearings are sleeved on the connecting main shaft. The outer walls of the two bearings are fixed to the water carrier.

9. A water-based mobile device, characterized in that, The system includes a water-based carrier and a water-based propulsion device as described in any one of claims 1-8, wherein a fixed platform is provided inside the water-based carrier, and the connecting main shaft, the steering motor, and the control mechanism are mounted on the fixed platform.

10. The water-based mobile equipment according to claim 9, characterized in that, It also includes a fixing cover; The fixing cover is sleeved on the connecting main shaft, the fixing cover is located on one side of the steering motor, and the fixing cover is connected to the fixing platform.

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