Propulsion device with electric folding function for ships and boats

Abstract

The utility model relates to the field of ship propulsion devices, in particular to a ship propulsion device with an electric folding function, which comprises a base unit, a tipping turnover seat rotationally arranged on the base unit through a rotating shaft, a vertical shaft arranged on the tipping turnover seat in a penetrating manner, a controller arranged at the upper end of the vertical shaft and a propeller arranged at the lower end of the vertical shaft. The base unit is provided with a tipping driving mechanism and a turnover support rotationally arranged on the rotating shaft. The tipping driving mechanism comprises a displacement block connected with the overturning support, and the overturning support is in linkage with the tipping overturning base through a connecting shaft. And the tipping turnover seat can be locked and fixed on the base unit, and only when the tipping driving mechanism drives the displacement block to move so as to drive the turnover bracket to rotate, the tipping turnover seat and the base unit are unlocked and can be turned over and adjusted. The scheme has the advantages of improving the adjustment efficiency, reducing the user operation load and enhancing the overall coordination of the system.

Description

Technical Field

[0001] This utility model relates to the field of marine propulsion devices, and in particular to a marine propulsion device with an electric folding function. Background Technology

[0002] In the field of marine propulsion systems, the electronic anchor (also known as a jacking engine) is one of the core components for ship positioning and power control. A traditional electronic anchor typically includes a mounting base, a connecting rod rotatably connected to the mounting base, a top shell on top of the connecting rod, and a thruster at the bottom. In marine propulsion systems, the mounting base's tilting and adjustment function is crucial for equipment maintenance.

[0003] In existing technologies, such as the patent CN221738066U, the mounting base is typically flipped manually: a latch is located on the right side of the mounting base, and the flipping frame must be manually pulled upwards and to the left to release the locking rod from the latch, thus completing the flipping action. While this manual adjustment method can adjust the position of the mounting base, it has significant limitations in practical applications. For example, the operation relies on manual intervention, resulting in low efficiency. Furthermore, with the increased power and functional integration of electronic anchor propulsion units (such as propellers and drive motors), their overall weight has increased significantly. This increased weight requires users to apply greater pulling force to manually lift the connecting rod and propeller during maintenance or retrieval, especially when changing the propulsion unit from the deployed position to the retracted position, where the operational difficulty increases dramatically. For users with limited strength (such as young or elderly users, or users with back injuries), the heavy physical demands of manual operation become a significant pain point.

[0004] With the increasing electrification and intelligence of ship equipment, there is an urgent need for an electric tilting solution that can replace manual operation. This solution can achieve automatic unlocking, tilting, and locking of the mounting base through precise control of the drive mechanism, thereby improving adjustment efficiency, reducing user workload, and enhancing the overall coordination of the system.

[0005] To address the aforementioned issues, existing technologies urgently need improvement. Summary of the Invention

[0006] To address the aforementioned problems, the present invention aims to provide a propulsion device for boats with an electric folding function, which has the advantages of improving adjustment efficiency, reducing user operating load, and enhancing the overall coordination of the system.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] This application provides a propulsion device for boats with an electrically folding function. The technical solution is as follows: A propulsion device for boats with an electrically folding function includes a base unit, a tilting and flipping seat rotatably mounted on the base unit via a rotating shaft, a vertical shaft passing through the tilting and flipping seat, a controller at the upper end of the vertical shaft, and a thruster at the lower end. The base unit is provided with a tilting drive mechanism and a flipping bracket rotatably mounted on the rotating shaft. The tilting drive mechanism includes a displacement block connected to the flipping bracket, and the flipping bracket and the tilting and flipping seat are linked through a connecting shaft. The tilting and flipping seat can be locked and fixed to the base unit. Only when the tilting drive mechanism drives the displacement block to move and thus drives the flipping bracket to rotate, the tilting and flipping seat is unlocked from the base unit and can be flipped and adjusted.

[0009] Furthermore, this application also proposes that the tilt drive mechanism includes a lead screw rotatably mounted on the base unit, and a tilt drive motor for driving the lead screw to rotate, with the displacement block meshing with the lead screw. When the tilt drive motor drives the lead screw to rotate, it causes the displacement block to move.

[0010] Furthermore, this application also proposes that a positioning seat is provided on the base unit, one end of the lead screw is rotatably mounted on the positioning seat, and the other end is connected to the output shaft of the tilt drive motor.

[0011] Furthermore, this application also proposes that the displacement block is provided with a sliding shaft, and the flipping bracket is provided with a sliding hole. The sliding shaft is embedded in the sliding hole, and when the displacement block drives the sliding shaft to move in the sliding hole, it drives the flipping bracket to rotate relative to the base unit.

[0012] Furthermore, this application proposes that the sliding hole is constructed as a strip-shaped hole arranged in the radial direction along the rotation axis. Furthermore, this application also proposes that the flipping bracket includes two connecting pieces passing through the rotation axis, the displacement block being located between the two connecting pieces, and sliding shafts being provided at both ends of the displacement block. Sliding holes for the sliding shafts to be inserted are respectively provided on the two connecting pieces.

[0013] Furthermore, this application also proposes that the tilt-rotating seat is provided with a locking hook, and the base unit is provided with a locking rod. When the locking hook is locked with the locking rod, the tilt-rotating seat is fixed on the base unit. In the initial stage when the tilt drive mechanism drives the displacement block to move and thus drives the rotating bracket to rotate, the rotating bracket links one of the locking hook and the locking rod, causing the locking hook to disengage from the locking rod.

[0014] Furthermore, this application proposes that the locking hook is fixedly mounted on the tilting and flipping base, and the locking rod is movably mounted on the base unit. A linkage plate is also hinged to the flipping bracket, and the locking rod passes through an adjustment hole on the linkage plate. When the flipping bracket rotates, it drives the linkage plate to rotate, thereby driving the locking rod to disengage from the locking hook.

[0015] Furthermore, this application proposes that the locking rod is slidably disposed in the sliding hole of the base, and the base unit is also provided with a tension spring for tightening the locking rod, and the lower end face of the locking hook is constructed as an inclined surface. When the tilting and flipping seat is tilted down until the inclined surface of the locking hook presses against the locking rod, the inclined surface can guide the locking rod into the locking hook.

[0016] As can be seen from the above, the propulsion device for boats with electric folding function provided in this application drives the displacement block to move through the tilt drive mechanism, thereby driving the tilt and flip support to rotate, so that the tilt and flip seat can be unlocked from the base unit and can be flipped and adjusted. This solves the problems of low efficiency and high operating load of manual operation in the prior art, and has the advantages of improving adjustment efficiency, reducing user operating load, and enhancing the overall coordination of the system. Attached Figure Description

[0017] Figure 1 A perspective view of a propulsion device for a boat provided in this application, showing its operational status.

[0018] Figure 2 This is a cross-sectional view of a propulsion device for a boat in use, provided in this application.

[0019] Figure 3 A perspective view of a boat propulsion device in a folded state, provided in this application.

[0020] Figure 4 A folded cross-sectional view of a propulsion device for a boat provided in this application.

[0021] Figure 5 This is a schematic diagram of the internal structure of a propulsion device for a boat, in which the tilting and flipping seat is cut open.

[0022] Figure 6 This is a schematic diagram of the tilting and flipping seat. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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, or a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] like Figure 1-6As shown, this embodiment relates to a propulsion device for boats with an electric folding function, including a base unit 1, a tilting and flipping seat 3 rotatably mounted on the base unit 1 via a rotating shaft 2, a vertical shaft 4 passing through the tilting and flipping seat 3, a controller 5 at the upper end of the vertical shaft 4, and a propeller 6 at the lower end. The base unit 1 is provided with a tilting drive mechanism 7 and a flipping bracket 8 rotatably mounted on the rotating shaft 2. The tilting drive mechanism 7 includes a displacement block 701 connected to the flipping bracket 8, and the flipping bracket 8 and the tilting and flipping seat 3 are linked via a connecting shaft 9. The tilting and flipping seat 3 can be locked and fixed to the base unit 1. Only when the tilting drive mechanism 7 drives the displacement block 701 to move, thereby driving the flipping bracket 8 to rotate, can the tilting and flipping seat 3 be unlocked from the base unit 1 and can be flipped and adjusted.

[0029] Therefore, the technical solution of this application achieves the electric folding and fixed locking of the tilt-rotating seat 3 through the coordinated action of the base unit 1, rotating shaft 2, tilt-rotating seat 3, vertical shaft 4, controller 5, propeller 6, tilt drive mechanism 7, tilt bracket 8, displacement block 701, and connecting shaft 9. The base unit 1 provides a supporting and fixed foundation, while the design of the rotating shaft 2 and tilt-rotating seat 3 enables the propulsion device to adjust its tilt. The vertical shaft 4 connects the controller 5 and the propeller 6, ensuring the accuracy of control and the effectiveness of propulsion. The tilt drive mechanism 7 drives the tilt bracket 8 to rotate in conjunction with the displacement block 701, realizing the unlocking and electric folding of the tilt-rotating seat 3 from the base unit 1. This design solves the problems of low efficiency and high difficulty in traditional manual operation, improving the convenience and efficiency of operation through electric drive. In practical applications, the technical solution of this application can significantly improve the adjustment efficiency and operational convenience of propulsion devices for boats, solving the problems of low efficiency and high difficulty in manual operation in the prior art.

[0030] In a specific implementation, the tilt drive mechanism 7 includes a lead screw 702 rotatably mounted on the base unit 1, and a tilt drive motor 703 that drives the lead screw 702 to rotate. A displacement block 701 is engaged with the lead screw 702. When the tilt drive motor 703 drives the lead screw 702 to rotate, it causes the displacement block 701 to move. Specifically, the rotational motion of the lead screw 702 is converted into the linear movement of the displacement block 701 by the drive of the tilt drive motor 703. Thus, this technical solution achieves precise movement of the displacement block 701 through the cooperation of the lead screw 702 and the tilt drive motor 703, thereby driving the rotation of the tilting bracket 8. This design makes the unlocking and tilting adjustment process of the tilting and tilting seat 3 more precise and controllable, reduces the need for manual intervention, and improves the efficiency and reliability of operation. Compared with the prior art, this solution replaces manual operation with electric drive, significantly reducing the user's operating load, and is especially suitable for heavy propulsion devices, improving the overall coordination and ease of operation of the system. Specifically, a positioning seat 101 is provided on the base unit 1. One end of the lead screw 702 is rotatably mounted on the positioning seat 101, and the other end is connected to the output shaft of the tilt drive motor 703. The positioning seat 101 provides stable rotational support for the lead screw 702, ensuring that the lead screw 702 will not deviate or wobble during rotation. One end of the lead screw 702 is fixed to the base unit 1 through the positioning seat 101, and the other end is connected to the output shaft of the tilt drive motor 703, allowing the tilt drive motor 703 to directly drive the lead screw 702 to rotate through the output shaft. This design not only ensures the stable rotation of the lead screw 702, but also ensures that the displacement block 701 can move precisely along the lead screw 702, thereby driving the rotation of the tilting bracket 8, and ultimately achieving precise adjustment of the tilting and tilting seat 3. Through the cooperation between the positioning seat 101 and the lead screw 702, the stability problem that may occur during the rotation of the lead screw 702 is solved, improving the adjustment accuracy and reliability of the entire device. Furthermore, the positioning seat 101 can adopt a bearing structure to reduce the frictional resistance when the lead screw 702 rotates and improve rotation efficiency. Therefore, the technical solution of this application, by setting the positioning seat 101, effectively solves the stability problem that may occur during the rotation of the lead screw 702, ensuring the precise adjustment of the tilt and flip seat 3. Compared with the prior art, this solution not only improves the adjustment accuracy but also enhances the reliability of the system and reduces maintenance and operation difficulty, demonstrating significant technical advantages.

[0031] exist Figure 5In the specific embodiment shown, a sliding shaft 704 is provided on the displacement block 701, and a sliding hole 801 is provided on the flipping bracket 8. The sliding shaft 704 is embedded in the sliding hole 801. When the displacement block 701 drives the sliding shaft 704 to move in the sliding hole 801, it drives the flipping bracket 8 to rotate relative to the base unit 1. Specifically, the sliding shaft 704 can be designed with a cylindrical or rectangular cross-section, and the sliding hole 801 is correspondingly designed with a hole structure that matches the shape of the sliding shaft 704. The sliding hole 801 can be further designed as a strip hole, arranged along the radial direction of the rotation axis 2, to ensure that the movement of the sliding shaft 704 in the sliding hole 801 can effectively drive the rotation of the flipping bracket 8. In this way, the technical solution realizes the linkage between the displacement block 701 and the flipping bracket 8 through the cooperation of the sliding shaft 704 and the sliding hole 801. Due to the structural limitations of the lead screw 702, the height of the displacement block 701 remains constant while allowing axial movement. The movement of the displacement block 701 directly acts on the tilting bracket 8, thereby driving the tilting bracket 8 to rotate relative to the base unit 1. This design ensures that the movement of the displacement block 701 is effectively transmitted to the tilting bracket 8, solving the linkage problem between the displacement block 701 and the tilting bracket 8. Compared with existing technologies, this solution achieves a more efficient and stable transmission effect through mechanical structure optimization, reduces operational difficulty, and improves the overall coordination of the system.

[0032] The strip-shaped structure of the sliding hole 801 allows the displacement block 701 to move closer to or further away from the axis of the rotation shaft 2 during horizontal movement, thereby driving the flipping bracket 8 to rotate relative to the base unit 1. Specifically, the strip-shaped design of the sliding hole 801 ensures the linkage between the displacement block 701 and the flipping bracket 8, enabling the flipping bracket 8 to rotate smoothly. As a preferred embodiment, the length and width of the sliding hole 801 can be optimized according to the movement range of the displacement block 701 and the rotation angle of the flipping bracket 8 to ensure the stability and operational efficiency of the device. Thus, the sliding hole 801 is set as a strip-shaped hole along the radial direction of the rotation shaft 2, so that when the displacement block 701 drives the sliding shaft 704 to move in the sliding hole 801, it can effectively drive the flipping bracket 8 to rotate relative to the base unit 1. This design solves the problem of the setting of the sliding hole 801 in the radial direction of the rotation shaft 2, improving the stability and operational efficiency of the device. Compared with existing technologies, this technical solution optimizes the structural design of the sliding hole 801, achieving precise linkage between the displacement block 701 and the flipping bracket 8, ensuring the smooth rotation of the flipping bracket 8, thereby improving the reliability of the device and the user's operating experience.

[0033] like Figure 5As shown, the flipping bracket 8 includes two connecting pieces 802 passing through the rotating shaft 2, and a displacement block 701 located between the two connecting pieces 802. Each end of the displacement block 701 is provided with a sliding shaft 704, and each of the two connecting pieces 802 has a sliding hole 801 for the sliding shaft 704 to be inserted. The design of the sliding shaft 704 and the sliding hole 801 allows the displacement block 701 to slide stably between the two connecting pieces 802, thus effectively solving the sliding fit problem between the displacement block 701 and the connecting pieces 802 during the rotation of the flipping bracket 8. Specifically, the sliding shaft 704 can be designed as a cylinder or a structure with ball bearings to reduce friction and improve sliding efficiency. The sliding hole 801 can be designed as a strip-shaped hole, with its length direction along the radial direction of the rotating shaft 2, so that the sliding shaft 704 can move freely within the hole. To address this issue, this technical solution places the displacement block 701 between the two connecting pieces 802 and achieves sliding of the displacement block 701 through the cooperation of the sliding shaft 704 and the sliding hole 801. This solves the problem of sliding contact between the displacement block 701 and the connecting piece 802 during the rotation of the tilting bracket 8. This design not only ensures the stability of the displacement block 701 during movement but also enables the displacement block 701 to effectively drive the rotation of the tilting bracket 8, thereby achieving the unlocking and tilting adjustment of the tilting bracket 3. Compared with existing technologies, this solution significantly improves the reliability and operational efficiency of the tilting bracket 8 through optimized structural design, and reduces equipment failures and maintenance costs caused by unstable sliding contact.

[0034] like Figure 6As shown, a locking hook 301 is provided on the tilt-rotating base 3, and a locking rod 102 is provided on the base unit 1. When the locking hook 301 is locked with the locking rod 102, the tilt-rotating base 3 is fixed on the base unit 1. In the initial stage when the tilt drive mechanism 7 drives the displacement block 701 to move and thus drives the rotating bracket 8 to rotate, the rotating bracket 8 links one of the locking hook 301 and the locking rod 102, causing the locking hook 301 to disengage from the locking rod 102. Specifically, the engagement of the locking hook 301 and the locking rod 102 can be achieved in various ways. For example, the locking hook 301 can be designed as a metal part with a hook-like structure, and the locking rod 102 can be a matching cylindrical or rectangular rod. The locking of the locking hook 301 and the locking rod 102 can be achieved by a spring or other elastic element to ensure a tight engagement between the locking hook 301 and the locking rod 102 in the non-operating state. Furthermore, the linkage between the tilting bracket 8 and the locking hook 301 or locking rod 102 can be achieved through mechanical linkages, gear transmission, or other mechanical connections to ensure that the locking hook 301 or locking rod 102 can be effectively disengaged during the initial stage of the tilting bracket 8's rotation. Thus, this application achieves the fixing and unlocking of the tilting and tilting seat 3 on the base unit 1 through the cooperation of the locking hook 301 and locking rod 102. When the tilting drive mechanism 7 drives the displacement block 701 to move, the rotation of the tilting bracket 8 causes the locking hook 301 or locking rod 102 to disengage, thereby achieving automatic unlocking of the tilting and tilting seat 3. This design simplifies the operation steps and improves the convenience and efficiency of operation through mechanical linkage. Compared with the prior art, this application does not rely on manual operation, reducing the physical burden on users, and is particularly suitable for heavy propulsion devices, improving the overall coordination and maintenance efficiency of the equipment.

[0035] In a further specific embodiment, the locking hook 301 is fixedly mounted on the tilting and flipping base 3, and the locking rod 102 is movably mounted on the base unit 1. A linkage plate 803 is also hinged to the flipping bracket 8, and the locking rod 102 passes through the adjustment hole 804 on the linkage plate 803. When the flipping bracket 8 rotates, it drives the linkage plate 803 to rotate, thereby driving the locking rod 102 to disengage from the locking hook 301. The rotation of the linkage plate 803 is achieved through its hinged relationship with the flipping bracket 8. The adjustment hole 804 on the linkage plate 803 allows the locking rod 102 to move within it, thereby driving the locking rod 102 to disengage from the locking hook 301 when the linkage plate 803 rotates. As a preferred embodiment, the linkage plate 803 can be designed with a rotation path of a specific angle to ensure that the locking rod 102 can disengage smoothly. Furthermore, the movement of the locking rod 102 can be achieved through a slide rail or guide groove on the base unit 1 to enhance its stability and accuracy. Therefore, this technical solution achieves automatic unlocking of the locking rod 102 and the locking hook 301 through the rotation of the linkage plate 803, solving the technical problem that the locking hook 301 and the locking rod 102 cannot automatically unlock when the tilting and flipping seat 3 is flipped. Compared with the prior art, this solution reduces the need for manual intervention and improves the convenience and efficiency of operation. At the same time, the design of the linkage plate 803 ensures the stability and reliability of the locking rod 102 and the locking hook 301 during the flipping process, avoiding equipment failure or safety hazards caused by incomplete unlocking.

[0036] In the specific design, the locking rod 102 is slidably disposed in the base sliding hole 103, and the base unit 1 is also provided with a tension spring 104 for tightening the locking rod 102. The lower end face of the locking hook 301 is constructed as an inclined surface 302. When the tilting and flipping seat 3 flips down until the inclined surface 302 of the locking hook 301 presses against the locking rod 102, the inclined surface 302 can guide the locking rod 102 into the locking hook 301.

[0037] Specifically, the sliding mechanism of the locking rod 102 allows it to move freely within the base sliding hole 103. When the tilting bracket 8 rotates, it drives the linkage plate 803 to rotate, thereby causing the locking rod 102 to move along the base sliding hole 103 and disengage from the locking hook 301. The tension spring 104 maintains the tension of the locking rod 102, ensuring it remains in its original position when not subjected to external force. The lower end face of the locking hook 301 is designed as a slope 302. When the tilting bracket 3 tilts downwards, the slope 302 of the locking hook 301 presses against the locking rod 102. The slope 302 design allows the locking rod 102 to be automatically guided into the locking hook 301, achieving automatic locking. The base sliding hole 103 can be designed as a straight line or a curve to accommodate different sliding requirements. The tension of the tension spring 104 can be adjusted by regulating the spring's preload. The angle of the inclined surface 302 of the locking hook 301 can be adjusted according to actual needs to ensure that the locking rod 102 can be smoothly inserted into the locking hook 301.

[0038] Therefore, this technical solution, through the cooperative design of the locking lever 102 and the locking hook 301, achieves automatic locking and unlocking functions when the tilting and flipping seat 3 is flipped. Compared with existing technologies, this solution requires no manual intervention, making operation more convenient and improving the system's automation level and operational efficiency. Specifically, the sliding setting of the locking lever 102 and the application of the tension spring 104 ensure that the locking lever 102 remains in its original position when not subjected to external force, while the inclined surface 302 design of the locking hook 301 allows the locking lever 102 to be automatically guided into the locking hook 301, thereby achieving automatic locking. When the tilting and flipping seat 3 is flipped downwards, the inclined surface 302 of the locking hook 301 automatically guides the locking lever 102 into the locking hook 301, completing the locking action without manual intervention. This design not only simplifies the operation process but also reduces the physical exertion of users when performing tilting and adjustment, making it especially suitable for users with limited strength. In addition, the tension spring 104 ensures that the locking lever 102 remains stable when not under force, further improving the system's reliability and safety.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A boat propelling device with electric folding function, comprising a base unit (1), a tilting and overturning seat (3) rotatably arranged on the base unit through a rotating shaft (2), a vertical shaft (4) arranged on the tilting and overturning seat, a controller (5) arranged on the upper end of the vertical shaft and a propeller (6) arranged on the lower end of the vertical shaft; characterized in that: a tilting driving mechanism (7) is arranged on the base unit (1), and an overturning support (8) is rotatably arranged on the rotating shaft (2); the tilting driving mechanism (7) comprises a displacement block (701) connected with the overturning support (8), and the overturning support (8) is connected with the tilting and overturning seat (3) through a connecting shaft (9). The tilting and overturning seat (3) can be locked and fixed on the base unit (1), and only when the tilting driving mechanism (7) drives the displacement block (701) to move and then drives the overturning support (8) to rotate, the tilting and overturning seat (3) is unlocked from the base unit (1) and can be overturned and adjusted. The tilting driving mechanism (7) comprises a lead screw (702) rotatably arranged on the base unit (1), and a tilting driving motor (703) driving the lead screw (702) to rotate, and the displacement block (701) is engaged with the lead screw (702); when the tilting driving motor (703) drives the lead screw (702) to rotate, the displacement block (701) is driven to move.

2. The marine propulsion unit of claim 1, wherein: The base unit (1) is provided with a positioning seat (101), one end of the lead screw (702) is rotatably arranged on the positioning seat (101), and the other end is connected to the output shaft of the tilting driving motor (703).

3. The marine propulsion unit of claim 2, wherein: The displacement block (701) is provided with a sliding shaft (704), and the overturning support (8) is provided with a sliding hole (801); the sliding shaft (704) is embedded into the sliding hole (801), and when the displacement block (701) drives the sliding shaft (704) to move in the sliding hole (801), the overturning support (8) is driven to rotate relative to the base unit (1).

4. The marine propulsion unit of claim 1, wherein: The sliding hole (801) is constructed as a strip-shaped hole arranged along the radial direction of the rotating shaft (2).

5. The marine propulsion unit of claim 4 wherein: The overturning support (8) comprises two connecting plates (802) arranged through the rotating shaft (2), the displacement block (701) is between the two connecting plates (802), both ends of the displacement block (701) are provided with the sliding shaft (704), and the two connecting plates (802) are respectively provided with the sliding hole (801) for embedding the sliding shaft (704).

6. The marine propulsion unit of claim 4 wherein: The tilting and overturning seat (3) is provided with a lock hook (301), and the base unit (1) is provided with a lock rod (102); when the lock hook (301) is locked with the lock rod (102), the tilting and overturning seat (3) is fixed on the base unit (1); at the initial stage when the tilting driving mechanism (7) drives the displacement block (701) to move and then drives the overturning support (8) to rotate, the overturning support (8) links one of the lock hook (301) and the lock rod (102), so that the lock hook (301) is separated from the lock rod (102).

7. The marine propulsion unit of claim 1, wherein: ​ 8. The marine propulsion unit of claim 7, wherein: The lock hook (301) is fixedly arranged on the tilting and overturning seat (3), and the lock rod (102) is movably arranged on the base unit (1); the overturning support (8) is further hinged with a linkage piece (803), and the lock rod (102) passes through an adjusting hole (804) on the linkage piece (803); when the overturning support (8) rotates, the linkage piece (803) is driven to rotate, thereby driving the lock rod (102) to be separated from the lock hook (301).

9. The marine propulsion unit of claim 8, wherein: The lock rod (102) is slidably arranged in a base sliding hole (103), and the base unit (1) is further provided with a tension spring (104) for tensioning the lock rod (102), and the lower end surface of the lock hook (301) is constructed as an inclined surface (302); when the tilting and overturning seat (3) is tilted downward to the inclined surface (302) of the lock hook (301) and is pressed against the lock rod (102), the inclined surface (302) can guide the lock rod (102) into the lock hook (301).

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