Propulsion device for ships and boats

Abstract

The invention relates to a propulsion device for ships and boats. The propulsion device comprises a base unit, a tipping turnover seat, a lifting driving mechanism, a vertical shaft, a controller and a propeller. The tipping turnover seat is provided with a lock hook and a pull rod frame, the pull rod frame fixes a lock rod, and the base unit is provided with a tipping driving mechanism and a turnover support. And the tipping driving mechanism is connected with the overturning bracket. When the lock hook is locked with the lock rod, the tipping turnover seat is fixed; when the overturning support is in linkage with the tipping overturning base, the tipping driving mechanism drives the displacement block to move, the overturning support rotates, the lock rod is separated from the lock hook, and the tipping overturning base rotates relative to the base unit. When the connecting shaft is detached, external force acts on the pull rod frame, the lock rod is separated from the lock hook, and the pull rod frame and the tipping turnover seat can rotate. The device improves the adjustment efficiency, reduces the operation load, is compatible with electric and manual operation, improves the transmission reliability, and simplifies the maintenance and emergency operation.

Description

Technical Field

[0001] The present invention relates to the field of marine propulsion devices, and particularly to a propulsion device for a boat. Background Art

[0002] In the field of marine propulsion devices, an electric anchor (also known as a current head machine) is one of the core components for ship positioning and power control. A traditional electric anchor usually includes a mounting base, a connecting rod rotatably connected to the mounting base, a top shell provided at the top of the connecting rod, and a thruster at the bottom. In the field of marine propulsion devices, the flip adjustment function of the mounting base of the electric anchor is crucial for equipment maintenance.

[0003] In the prior art, as shown in the patent CN221738066U, the mounting base is usually flipped manually: there is a bayonet on the right side of its mounting base, and it is necessary to manually pull the flip frame upward to the left to release the cooperation between the locking rod and the bayonet, and then complete the flipping action. Although such a manual adjustment method can achieve the position adjustment of the mounting base, it has significant limitations in practical applications. For example, the operation depends on manual intervention and the efficiency is low. Moreover, with the increase in the power of the electric anchor propulsion unit (such as thrusters, drive motors, etc.) and the integration of functions, its overall weight has increased significantly. This weight increase requires users to apply greater pulling force to manually lift the connecting rod and the thruster during maintenance or recovery. Especially during the process of converting the propulsion unit from the deployed position to the retracted position, the operation difficulty increases sharply. For user groups with limited strength (such as young or elderly users, or users with back injuries), the heavy physical labor requirement of manual operation becomes a significant pain point.

[0004] However, if only the manual operation is replaced with an electric operation, the following situation will occur, that is, there will be no temporary operation measures in the case of the failure of the electric control drive part.

[0005] With the increasing trend of electrification and intelligentization of ship equipment, there is an urgent need for a marine propulsion device that is compatible with electric operation and manual operation, so as to improve the adjustment efficiency, reduce the user operation load, and at the same time allow manual operation when the electric control part fails.

[0006] In addition, the lifting adjustment function of the electric anchor is crucial for adapting to different hull draft depths and water area environments. However, most of the connecting rods in the prior art adopt a fixed structure and cannot achieve lifting adjustment, resulting in a fixed position of the thruster and making it difficult to adapt to diverse working conditions such as shallow water, deep water, or wave fluctuations. For example, when it is necessary to lift the thruster to avoid touching the bottom in a shallow water area, the fixed structure will limit the maneuverability of the ship; while in deep water operations, insufficient sinking of the thruster will lead to a decrease in propulsion efficiency.

[0007] The prior art, such as the patent of CN221738066U, proposed a lifting and adjusting solution: the lifting drive mechanism on the mounting base drives the steel cable to wind around the annular grooves of the driving roller shaft and the driven roller shaft, and the linkage connecting rod is lifted and lowered, thereby adjusting the height of the thruster. Although this solution realizes the position adjustment of the thruster, its lifting function still has significant deficiencies: Low transmission reliability: The winding of the steel cable around the driving roller shaft depends on the friction force of the groove side wall, and it is prone to slip when the load is large or during frequent start and stop, resulting in a decrease in lifting accuracy; Lack of effective guiding and tensioning mechanism: The steel cable lacks axial guiding constraints during transmission, is prone to deviation or loosening, and relies on manual adjustment components (such as adjustment components) to repeatedly calibrate the tightness, which is cumbersome to operate and difficult to maintain long-term stability; Inconvenient maintenance and emergency operation: The lifting drive unit and the driving roller shaft are fixedly connected (such as a coupling), and it is impossible to quickly disconnect the power transmission in the case of the failure of the lifting drive unit, resulting in difficult manual adjustment. Summary of the Invention

[0008] In order to solve the above problems, the purpose of the present invention is to provide a propulsion device for a boat, which has the advantages of improving the adjustment efficiency, reducing the user's operation load, being compatible with electric and manual operations, improving the transmission reliability, and simplifying the maintenance and emergency operations.

[0009] In order to achieve the above purpose, the present invention adopts the following technical solutions: The present application provides a propulsion device for a boat, and the technical solution is as follows: A propulsion device for a boat includes a base unit, a tilting and flipping seat rotatably arranged on the base unit through a rotating shaft, a lifting drive mechanism arranged on the tilting and flipping seat, a vertical shaft passing through the tilting and flipping seat and the lifting drive mechanism, and a controller arranged at the upper end of the vertical shaft and a thruster arranged at the lower end; A locking hook and a slidably arranged pull rod frame are arranged on the tilting and flipping seat, a locking rod is fixed on the pull rod frame, and the locking rod is slidably arranged on the base unit; A tilting drive mechanism and a flipping bracket rotatably arranged on the rotating shaft are arranged on the base unit; the tilting drive mechanism includes a displacement block connected to the flipping bracket; When the locking hook and the locking rod are locked, the tilting and flipping seat is fixed on the base unit; When the flipping bracket and the tilting and flipping seat are linked by a detachable connecting shaft, the tilting drive mechanism drives the displacement block to move to drive the flipping bracket to rotate, so that the locking rod disengages from the locking hook, and the tilting and flipping seat rotates relative to the base unit along with the flipping bracket; When the connecting shaft is removed, an external force acts on the pull rod frame to drive the locking rod to disengage from the locking hook, and the pull rod frame and the tilting and flipping seat can rotate relative to the base unit.

[0010] Further, the present application also proposes that docking through holes are provided on the flipping bracket and the tilting and flipping seat. When the two docking through holes are aligned, a connecting shaft is inserted to link the flipping bracket and the tilting and flipping seat; A limiting component is provided on the tilting and flipping seat, including a limiting block with elastic support and a limiting spring; the connecting shaft is provided with a stepped surface, and the limiting block presses against the stepped surface to limit the axial movement of the connecting shaft; a lever extending outside the tilting and flipping seat is provided on the limiting block.

[0011] Further, the present application also proposes that the tilting drive mechanism includes a lead screw rotatably provided on the base unit, a tilting drive motor for driving the lead screw, and a displacement block meshing and sleeving on the lead screw; one end of the lead screw is rotatably provided on the positioning seat of the base unit, and the other end is connected to the output shaft of the tilting drive motor; Sliding shafts are provided at both ends of the displacement block, and radial strip holes are provided on the two connecting pieces of the flipping bracket; the sliding shafts are embedded in the strip holes, and when the displacement block moves, it drives the flipping bracket to rotate around the rotation shaft.

[0012] Further, the present application also proposes that a linkage piece is hinged on the flipping bracket, and a locking rod passes through the adjustment hole of the linkage piece; when the flipping bracket rotates, it drives the linkage piece to drive the locking rod to disengage from the locking hook.

[0013] Further, the present application also proposes that the locking rod is slidably arranged in the base sliding hole, and a tension spring for tensioning the locking rod is provided on the base unit; the lower end surface of the locking hook is an inclined surface, and when the tilting and flipping seat turns downwards, the inclined surface guides the locking rod into the locking hook.

[0014] Further, the present application also proposes that a guiding column is provided on the side wall of the tilting and flipping seat, a pull rod chute is provided on the pull rod frame, and the guiding column is embedded in the chute to limit the sliding path of the pull rod frame; when the pull rod frame rotates with the tilting and flipping seat, it keeps the trajectory of the locking rod aligned with the base sliding hole.

[0015] Further, the present application also proposes that a lifting pull rod is formed by extending the rear end of the pull rod frame, and the locking rod is connected to the front end of the pull rod frame; The pull rod frame includes a lifting pull rod and connecting rods connecting both sides of the lifting pull rod, and the locking rod passes through the front ends of the connecting rods on both sides and is fixedly connected thereto; The base unit includes base side plates on both sides, and base sliding holes are constructed on both base side plates; The locking rod passes through the base sliding holes on both sides to form a symmetric sliding structure; When an external force acts on the lifting pull rod, the locking rod can be driven to disengage from the locking hook.

[0016] Further, the present application also proposes that the lifting drive mechanism includes a housing, a driving pulley and a lifting drive assembly; a synchronous belt is provided on the vertical shaft, the synchronous belt bypasses the driving pulley and is fixedly connected to the vertical shaft; the output gear of the lifting drive assembly is in linkage with the driving pulley through a coupling plug connection, and the coupling can axially move to disengage the output gear or the driving pulley; the end of the coupling is connected to an operating member that can rotate relative to each other.

[0017] Further, the present application also proposes that the coupling is a spline shaft, and its external gear meshes with the axial holes of the output gear and the driving pulley; when the coupling moves axially, the external gear disengages from the axial hole; The side wall of the housing is provided with a shaft hole, and the side wall of the shaft hole is provided with an axial chute and a circumferential chute; the shaft part of the operating member is inserted into the shaft hole, and the slider is embedded in the chute to guide axial movement, and the operating member is rotated to make the slider turn into the circumferential chute to limit the displacement of the coupling; the operating member is completely received in the slot of the housing.

[0018] Further, the present application also proposes that the driving pulley is a gear and the synchronous belt is a toothed belt; the lifting drive mechanism further includes a pressing wheel for pressing the vertical shaft to make the synchronous belt fit; the vertical shaft is provided with a belt groove for the synchronous belt to be embedded. The housing includes a first half housing, a second half housing and a mounting plate; the lifting drive assembly and the driving pulley are separately arranged on both sides of the mounting plate, and the mounting plate and the cover form a channel, and after the housing is butted, a channel opening for the vertical shaft to pass through is formed.

[0019] As can be seen from the above, a propulsion device for a boat and its lifting drive mechanism provided by the present application realize the electric and manual adjustment of the tilting and flipping seat and the propeller through the coordinated work of the tilting drive mechanism and the lifting drive mechanism, solve the problems of low operation efficiency, poor transmission reliability and inconvenient maintenance in the prior art, and have the advantages of improving the adjustment efficiency, reducing the user's operation load, being compatible with electric and manual operations, improving the transmission reliability, simplifying the maintenance and emergency operations, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. 1 is a three-dimensional schematic diagram of the unfolded state of a propulsion device for a boat provided by the present application.

[0021] Figure 2 FIG. 2 is a sectional view of the unfolded state of a propulsion device for a boat provided by the present application.

[0022] Figure 3 FIG. 3 is a three-dimensional schematic diagram of the electric folding state of a propulsion device for a boat provided by the present application.

[0023] Figure 4 FIG. 4 is a sectional view of the electric folding state of a propulsion device for a boat provided by the present application.

[0024] Figure 5A three-dimensional schematic diagram of the manual folding state of a propulsion device for a boat provided by this application.

[0025] Figure 6 A cross-sectional view of the manual folding state of a propulsion device for a boat provided by this application.

[0026] Figure 7 A schematic diagram of the cooperation between the connecting shaft and the limiting component on the propulsion device for a boat.

[0027] Figure 8 A schematic diagram of the electric folding drive on the propulsion device for a boat.

[0028] Figure 9 A schematic diagram of the locked state between the tilting and flipping seat and the locking rod in the electric folding state.

[0029] Figure 10 A schematic diagram of the locked state between the tilting and flipping seat and the locking rod in the manual folding state.

[0030] Figure 11 A schematic diagram of the unlocked state between the tilting and flipping seat and the locking rod in the manual folding state.

[0031] Figure 12 An assembly schematic diagram of the lifting drive mechanism.

[0032] Figure 13 A partial schematic diagram of the housing of the lifting drive mechanism.

[0033] Figure 14 A schematic diagram of the structure of the operating component.

[0034] Figure 15 An exploded view of the internal drive structure of the lifting drive mechanism. Detailed implementation manners

[0035] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation of the present invention.

[0036] As Figures 1 - 15As shown in the figure, this embodiment relates to a propulsion device for a boat, including a base unit 1, a tilting and flipping seat 3 rotatably arranged on the base unit 1 through a rotating shaft 2, a lifting drive mechanism 4 arranged on the tilting and flipping seat 3, a vertical shaft 5 passing through the tilting and flipping seat 3 and the lifting drive mechanism 4, and a controller 6 arranged at the upper end of the vertical shaft 5 and a propeller 7 arranged at the lower end. A locking hook 8 and a sliding pull rod frame 9 are arranged on the tilting and flipping seat 3. A locking rod 10 is fixed on the pull rod frame 9, and the locking rod 10 is slidably arranged on the base unit 1. Antilt drive mechanisms and a flipping bracket 12 rotatably arranged on the rotating shaft 2 are arranged on the base unit 1. The tilt drive mechanism includes a displacement block 13 connected to the flipping bracket 12. When the locking hook 8 is locked with the locking rod 10, the tilting and flipping seat 3 is fixed on the base unit 1. When the flipping bracket 12 and the tilting and flipping seat 3 are linked through a detachable connecting shaft 14, the tilt drive mechanism drives the displacement block 13 to move to drive the flipping bracket 12 to rotate, so that the locking rod 10 disengages from the locking hook 8, and the tilting and flipping seat 3 rotates relative to the base unit 1 along with the flipping bracket 12. When the connecting shaft 14 is removed, an external force acts on the pull rod frame 9 to drive the locking rod 10 to disengage from the locking hook 8, and the pull rod frame 9 and the tilting and flipping seat 3 can rotate relative to the base unit 1.

[0037] Specifically, the locking design of the locking hook 8 and the locking rod 10 can be achieved in various ways. For example, the locking hook 8 can be designed as a structure with a groove, and the locking rod 10 is designed as a protrusion matching the groove. By sliding the locking rod 10 to embed it into or disengage it from the groove of the locking hook 8, fixation or release can be achieved. Further, the pull rod frame 9 can be designed as a structure with a slide rail, and the locking rod 10 slides on the base unit 1 through the slide rail to ensure the stable movement track of the locking rod 10. The displacement block 13 in the tilt drive mechanism can be moved through ways such as screw rod 21 transmission, hydraulic drive or gear drive, so as to drive the flipping bracket 12 to rotate. The detachable design of the connecting shaft 14 can be achieved through ways such as threaded connection, snap connection or pin shaft 14 connection, ensuring that it can be quickly disassembled when needed.

[0038] The technical solution of this application realizes the fixation and rotational adjustment between the tilting and flipping seat 3 and the base unit 1 by setting components such as a locking hook 8, a locking rod 10, a pull rod frame 9, a tilting drive mechanism, a flipping bracket 12, and a displacement block 13. The locking connection between the locking hook 8 and the locking rod 10 fixes the tilting and flipping seat 3 on the base unit 1, ensuring the stability of the device. When it is necessary to adjust the angle of the tilting and flipping seat 3, the displacement block 13 is driven to move through the tilting drive mechanism, driving the flipping bracket 12 to rotate, so that the locking rod 10 disengages from the locking hook 8, thereby realizing the electric control of the rotation of the tilting and flipping seat 3. In addition, the detachable design of the connecting shaft 14 allows the connecting shaft 14 to be removed when the electric control drive fails, disconnecting the flipping bracket 12 from the tilting and flipping seat 3, and driving the locking rod 10 to disengage from the locking hook 8 by manually operating the pull rod frame 9 to realize the rotational adjustment of the tilting and flipping seat 3. This design not only improves the adjustment efficiency of the device, but also enhances the reliability and applicability of the device. Compared with the prior art, the technical solution of this application realizes electric control while retaining the feasibility of manual operation, ensuring that adjustment can still be carried out when the electric control drive fails, and improving the practicality and reliability of the device.

[0039] Such as Figure 1, as shown in Figures 7 and 8, the tilting bracket 12 and the tilting and overturning seat 3 are provided with docking through holes 15. When the two docking through holes 15 are aligned, a connecting shaft 14 is inserted to link the tilting bracket 12 and the tilting and overturning seat 3; the design of the docking through holes 15 ensures the precise alignment of the tilting bracket 12 and the tilting and overturning seat 3 during linkage, thereby enhancing the stability of the connection. In a specific solution, the tilting and overturning seat 3 is provided with a limiting component 16, including a limiting block 17 with elastic support and a limiting spring 18. The connecting shaft 14 is provided with a stepped surface 19, and the limiting block 17 presses against the stepped surface 19 to limit the axial movement of the connecting shaft 14; a lever 20 extending outside the tilting and overturning seat 3 is provided on the limiting block 17. The design of the limiting component 16, including the limiting block 17 and the limiting spring 18, effectively restricts the axial movement of the connecting shaft 14, prevents unnecessary displacement of the connecting shaft 14 during use, and ensures the stable operation of the equipment. The setting of the lever 20 facilitates the operator to manually adjust the position of the limiting block 17, improving the operability and maintenance convenience of the equipment. Specifically, the docking through holes 15 can be designed as circular or elliptical to adapt to different shapes of the connecting shaft 14. The limiting block 17 can be made of metal or high-strength plastic to ensure its durability and reliability. The limiting spring 18 can be selected with different hardnesses of springs to adapt to different load requirements. The lever 20 can be designed as a straight rod or a curved rod to facilitate the operator to operate at different positions. Thus, by providing the docking through holes 15, the precise alignment of the tilting bracket 12 and the tilting and overturning seat 3 during linkage is ensured, thereby enhancing the stability of the connection. The design of the limiting component 16, including the limiting block 17 and the limiting spring 18, effectively restricts the axial movement of the connecting shaft 14, prevents unnecessary displacement of the connecting shaft 14 during use, and ensures the stable operation of the equipment. The setting of the lever 20 facilitates the operator to manually adjust the position of the limiting block 17, improving the operability and maintenance convenience of the equipment.

[0040] As Figures 1 - 8As shown in the figure, the tilting drive mechanism includes a lead screw 21 rotatably arranged on the base unit 1, a tilting drive motor 22 for driving the lead screw 21, and a displacement block 13 meshing and sleeving the lead screw 21; one end of the lead screw 21 is rotatably arranged on the positioning seat 23 of the base unit 1, and the other end is connected to the output shaft of the tilting drive motor 22; sliding shafts 24 are provided at both ends of the displacement block 13, and radial strip holes 26 are provided on the two connecting pieces 25 of the flipping bracket 12; the sliding shafts 24 are embedded in the strip holes 26, and when the displacement block 13 moves, it drives the flipping bracket 12 to rotate around the rotation shaft 2. Specifically, the rotation of the lead screw 21 is driven by the tilting drive motor 22, and the rotational motion of the lead screw 21 is converted into the linear motion of the displacement block 13. The sliding shafts 24 at both ends of the displacement block 13 cooperate with the strip holes 26 on the connecting pieces 25 of the flipping bracket 12, so that the linear motion of the displacement block 13 is further converted into the rotational motion of the flipping bracket 12. Among them, the positioning seat 23 of the lead screw 21 ensures the stability of the lead screw 21 during rotation and avoids the deviation or loosening of the lead screw 21 during movement. The matching design of the sliding shafts 24 of the displacement block 13 and the strip holes 26 ensures the accuracy and controllability of the flipping bracket 12 during rotation.

[0041] As a preferred embodiment, the lead screw 21 can adopt a ball screw 21 to improve the transmission efficiency and reduce the friction loss. The tilting drive motor 22 can adopt a stepper motor or a servo motor to achieve more precise speed and position control. The sliding shafts 24 of the displacement block 13 can be made of wear-resistant materials to extend the service life and reduce the maintenance requirements. Thus, through the cooperation of the lead screw 21, the tilting drive motor 22 and the displacement block 13, the rotational drive of the flipping bracket 12 is realized. The rotation of the lead screw 21 is matched with the strip holes 26 on the connecting pieces 25 of the flipping bracket 12 through the sliding shafts 24 of the displacement block 13, so that the linear motion of the displacement block 13 is converted into the rotational motion of the flipping bracket 12. This design ensures the stability and controllability of the rotation of the flipping bracket 12 through the precise cooperation of the mechanical structure, and solves the technical problem of driving the flipping bracket 12 to rotate by the tilting drive mechanism. Compared with the prior art, this solution has higher transmission efficiency and more precise control ability, while reducing the maintenance requirements and operation difficulty.

[0042] Further, a linkage piece 27 is hinged on the flipping bracket 12, and the locking rod 10 passes through the adjustment hole 28 of the linkage piece 27; when the flipping bracket 12 rotates, it drives the linkage piece 27 to drive the locking rod 10 to disengage from the locking hook 8. Among them, the linkage piece 27 is connected to the flipping bracket 12 in a hinged manner, and the locking rod 10 passes through the adjustment hole 28 on the linkage piece 27, so that the linkage piece 27 can move with the rotation of the flipping bracket 12. Specifically, the adjustment hole 28 of the linkage piece 27 is designed to be elongated, allowing the locking rod 10 to have a certain displacement space when the linkage piece 27 moves, so as to ensure that the locking rod 10 can smoothly disengage from the locking hook 8. As a preferred implementation manner, the hinge point of the linkage piece 27 is located near the rotation center of the flipping bracket 12 to maximize the movement range of the linkage piece 27, thereby improving the efficiency of the locking rod 10 disengaging from the locking hook 8. In this regard, the material of the linkage piece 27 can be selected as a high-strength alloy to ensure its durability during frequent movement. Further, a wear-resistant bushing can be provided in the adjustment hole 28 of the linkage piece 27 to reduce the friction between the locking rod 10 and the adjustment hole 28 and extend the service life. In addition, the shape of the linkage piece 27 can be designed as an arc or an L shape to adapt to different installation space and movement trajectory requirements. Thus, through the mechanical linkage method, the disengagement operation of the locking rod 10 no longer depends on the external force directly acting on the pull rod frame 9, but is realized by the rotation of the flipping bracket 12. Specifically, when the flipping bracket 12 rotates, the linkage piece 27 moves accordingly, driving the locking rod 10 to disengage from the locking hook 8. This design simplifies the operation process, improves the operation efficiency, and is especially suitable for scenarios where the locking rod 10 needs to be disengaged frequently. Compared with the prior art, this solution reduces the need for manual intervention, reduces the operation difficulty, and improves the reliability and stability of the system.

[0043] Such as Figure 7 and 8As shown, the locking rod 10 is slidably arranged in the base sliding hole 29, and a tension spring 30 for tensioning the locking rod 10 is provided on the base unit 1; the lower end surface of the locking hook 8 is an inclined surface 31, and when the tilting and flipping seat 3 is turned downwards, the inclined surface 31 guides the locking rod 10 into the locking hook 8. Specifically, the sliding arrangement of the locking rod 10 can be achieved in various ways. For example, the base sliding hole 29 can be designed as a linear chute, and both ends of the locking rod 10 are embedded in the chute to ensure that the locking rod 10 slides along a straight line. The tension spring 30 can be installed at one or both ends of the locking rod 10, and the tension of the spring keeps the locking rod 10 in the locked position when not under force. The design of the inclined surface 31 of the locking hook 8 can be further optimized. For example, the angle of the inclined surface 31 can be adjusted according to the sliding path of the locking rod 10 to ensure that the locking rod 10 can be smoothly guided into the locking hook 8. In addition, the surface of the inclined surface 31 can be specially treated, such as adding a lubricating coating or using wear-resistant materials, to reduce friction and improve the smoothness of the introduction of the locking rod 10. In this regard, the technical solution of this application, through the sliding arrangement of the locking rod 10 in the base sliding hole 29 and the application of the tension spring 30, ensures that the locking rod 10 can be kept in the locked position when not under force, thereby improving the reliability of locking. The design of the inclined surface 31 at the lower end surface of the locking hook 8 enables the inclined surface 31 to guide the locking rod 10 into the locking hook 8 smoothly when the tilting and flipping seat 3 is turned downwards, realizing an automatic locking operation. This design not only simplifies the locking and unlocking operations between the locking rod 10 and the locking hook 8, but also improves the convenience and reliability of the operation. Compared with the prior art, the technical solution of this application effectively solves the technical problems of the locking and unlocking operations between the locking rod 10 and the locking hook 8 through the guidance of the inclined surface 31 and the tension of the tension spring 30, and has remarkable practicability and innovation.

[0044] As Figure 10 and 11As shown in the figure, the side wall of the tilting and flipping seat 3 is provided with a guide post 32, and the pull rod frame 9 is provided with a pull rod chute 33. The guide post 32 is embedded in the chute 33 to limit the sliding path of the pull rod frame 9. When the pull rod frame 9 rotates with the tilting and flipping seat 3, the trajectory of the locking rod 10 is kept aligned with the base sliding hole 29. The design of the guide post 32 and the pull rod chute 33 ensures that the trajectory of the locking rod 10 is always aligned with the base sliding hole 29 when the pull rod frame 9 rotates by restricting the sliding path of the pull rod frame 9. This structure guarantees the stability of the locking rod 10 during rotation through physical constraints, avoiding misalignment between the locking rod 10 and the base sliding hole 29, thus solving the problem of the trajectory alignment of the locking rod 10 when the pull rod frame 9 rotates. Moreover, the cooperation between the above-mentioned guide post 32 and the pull rod chute 33 can also transfer the external force on the pull rod frame 9 to the tilting and flipping seat 3. Specifically, after the external force acts on the pull rod frame 9 to achieve unlocking, continuing to apply force to the pull rod frame 9 can turn up the pull rod frame 9 and the tilting and flipping seat 3 together. During this process, the external force on the pull rod frame 9 is transferred to the tilting and flipping seat 3 through the cooperation between the guide post 32 and the pull rod chute 33, driving the tilting and flipping seat 3 to flip synchronously. In this way, both the manual unlocking and flipping processes can be directly applied to the pull rod frame 9. Specifically, the guide post 32 can be set to be cylindrical or square, and the pull rod chute 33 can be linear or curved to adapt to different rotation path requirements. The cooperation mode between the guide post 32 and the pull rod chute 33 can be sliding fit or rolling fit to reduce the frictional resistance and improve the smoothness of operation. In addition, the materials of the guide post 32 and the pull rod chute 33 can be selected as high-strength alloy or wear-resistant materials to enhance their durability and reliability. In summary, through the cooperation between the guide post 32 and the pull rod chute 33, the present application effectively solves the technical problem of the trajectory alignment of the locking rod 10 with the base sliding hole 29 when the pull rod frame 9 rotates with the tilting and flipping seat 3. This design not only improves the stability of the locking rod 10, but also simplifies the manual unlocking and flipping operation processes, enhancing the use efficiency and reliability of the overall device.

[0045] Furthermore, the rear end of the drawbar frame 9 extends to form a lifting drawbar 34, and the locking bar 10 is connected to the front end of the drawbar frame 9. The drawbar frame 9 includes the lifting drawbar 34 and connecting rods 35 connecting both sides of the lifting drawbar 34. The locking bar 10 passes through the front end portions of the connecting rods 35 on both sides and is fixedly connected thereto. The base unit 1 includes base side plates 36 on both sides, and base sliding holes 29 are formed on the base side plates 36. The locking bar 10 passes through the base sliding holes 29 on both sides to form a symmetric sliding structure. When an external force acts on the lifting drawbar 34, the locking bar 10 can be driven to disengage from the locking hook 8. Specifically, the design of the lifting drawbar 34 enables the user to directly apply an external force to the lifting drawbar 34, thereby driving the locking bar 10 to disengage from the locking hook 8. The drawbar frame 9 includes the lifting drawbar 34 and the connecting rods 35 connecting both sides of the lifting drawbar 34. The locking bar 10 passes through the front end portions of the connecting rods 35 on both sides and is fixedly connected thereto. This structure ensures the stability of the locking bar 10 during the sliding process. The base unit 1 includes base side plates 36 on both sides, and base sliding holes 29 are formed on the base side plates 36. The locking bar 10 passes through the base sliding holes 29 on both sides to form a symmetric sliding structure. This symmetric design enables the locking bar 10 to be evenly stressed during the sliding process, avoiding problems such as jamming or offset caused by unilateral stress. Through the cooperation of the design of the lifting drawbar 34 and the symmetric sliding structure, the stable disengagement of the locking bar 10 from the locking hook 8 is achieved, improving the convenience and reliability of the operation. Thus, the technical solution of the present application, through the cooperation of the design of the lifting drawbar 34 and the symmetric sliding structure, solves the problems of the symmetric sliding structure of the drawbar frame 9 and the locking bar 10 and the design of the lifting drawbar 34 in the marine propulsion device, and realizes the stable disengagement of the locking bar 10 from the locking hook 8. Compared with the prior art, the technical solution of the present application has significant advantages in terms of operation convenience and reliability, avoids problems such as jamming or offset caused by unilateral stress, and improves the overall operation stability and efficiency.

[0046] Such as Figure 2, as shown in FIGS. 12 - 15, the lifting drive mechanism 4 includes a housing 37, a driving pulley 38 and a lifting drive assembly 39; a vertical shaft 5 is provided with a synchronous belt 40, and the synchronous belt 40 bypasses the driving pulley 38 and is fixedly connected to the vertical shaft 5; the output gear 41 of the lifting drive assembly 39 is inserted and linked with the driving pulley 38 through a coupling 42, and the coupling 42 can axially move to disengage the output gear 41 or the driving pulley 38; the end of the coupling 42 is connected to an operating member 43 that can rotate relatively. Specifically, the lifting drive mechanism 4 realizes the efficient transmission of the vertical shaft 5 through the combination of the housing 37, the driving pulley 38, the lifting drive assembly 39, the synchronous belt 40, the coupling 42 and the operating member 43. The synchronous belt 40 bypasses the driving pulley 38 and is fixedly connected to the vertical shaft 5, ensuring the stability of the transmission. The design of the coupling 42 allows for the quick disconnection or connection between the output gear 41 and the driving pulley 38. When the lifting drive assembly 39 fails to drive, the operating member 43 can manually control the axial movement of the coupling 42 to disengage the output gear 41 from the driving pulley 38. At this time, the vertical shaft 5 can be manually pushed or pulled to realize lifting. This design not only improves the reliability of the transmission but also ensures the operating flexibility in case of emergency.

[0047] In a further specific solution, the coupling 42 is a spline shaft, and its external gear 44 meshes with the central holes 45 of the output gear 41 and the driving pulley 38; when the coupling 42 axially moves, the external gear 44 disengages from the central hole 45; specifically, the design of the spline shaft enables the coupling 42 to quickly separate from the external gear 44 and the central hole 45 during axial movement, thus realizing the flexible operation of the coupling 42. Using a spline shaft for linkage can also ensure good synchronism. As a preferred implementation, the external gear 44 of the spline shaft and the central holes 45 of the output gear 41 and the driving pulley 38 adopt a high-precision meshing design to ensure smooth disengagement during axial movement and avoid jamming or wear.

[0048] As Figure 13As shown, the side wall of the housing 37 is provided with a shaft hole 46, and the side wall of the shaft hole 46 is provided with an axial chute 47 and a circumferential chute 48; the shaft portion 49 of the operating member 43 is inserted into the shaft hole 46, and the slider 50 is embedded in the chute 47 to guide the axial movement. Rotating the operating member 43 causes the slider 50 to turn into the circumferential chute 48 to limit the displacement of the coupling 42; the operating member 43 is completely received in the notch 51 of the housing 37. The design of the shaft hole 46, the axial chute 47 and the circumferential chute 48 of the housing 37 enables the operating member 43 to precisely control the displacement of the coupling 42 through the movement and rotation of the slider 50. After the shaft portion 49 of the operating member 43 is inserted into the shaft hole 46, the slider 50 is embedded in the chute 47. By axially moving the coupling 42, the slider 50 slides along the axial chute 47 to achieve the axial displacement of the coupling 42. When it is necessary to limit the displacement of the coupling 42, rotate the operating member 43 to cause the slider 50 to turn into the circumferential chute 48, thereby fixing the position of the coupling 42. The operating member 43 is completely received in the notch 51 of the housing 37, ensuring the integrity of the device and the convenience of operation. The dimensions and shapes of the axial chute 47 and the circumferential chute 48 are optimized to ensure smooth movement and rotation of the slider 50 in the chute and effectively limit the displacement of the coupling 42. A sealing ring is provided between the shaft portion 49 of the operating member 43 and the shaft hole 46 to prevent dust or impurities from entering and extend the service life of the device. The notch 51 of the housing 37 is designed as a detachable structure for easy installation and maintenance of the operating member 43.

[0049] Through the above technical solutions, the present application effectively solves the technical problem that the coupling 42 disengages from the external gear 44 and the central hole 45 during axial movement and restricts the displacement of the coupling 42 through the operating member 43. The design of the spline shaft enables the coupling 42 to be quickly separated, improving the flexibility of operation; the cooperation of the shaft hole 46, the axial chute 47, the circumferential chute 48 on the side wall of the housing 37 and the operating member 43 ensures precise control of the displacement of the coupling 42; the operating member 43 is completely received in the notch 51 of the housing 37, further improving the integrity of the device and the convenience of operation. Compared with the prior art, the technical solution of the present application has significant advantages in terms of the flexibility and precision of the operation of the coupling 42, while simplifying the device structure and reducing the maintenance cost.

[0050] Furthermore, the driving pulley 38 is a gear, and the timing belt 40 is a toothed belt; the lifting drive mechanism 4 further includes a pressing wheel 52 for pressing the timing belt 40 to fit; a belt groove 53 for the timing belt 40 to be embedded is provided on the vertical shaft 5; wherein, the driving pulley 38 is a gear and the timing belt 40 is a toothed belt, and this design can effectively improve the transmission efficiency and stability. The function of the pressing wheel 52 is to ensure the close fit between the timing belt 40 and the driving pulley 38 to prevent slipping or loosening. The belt groove 53 provided on the vertical shaft 5 further fixes the position of the timing belt 40 to prevent it from shifting during operation. Specifically, the pressing wheel 52 can be adjusted by a spring or a hydraulic device to adapt to different working loads and the tension requirements of the timing belt 40. The depth and width of the belt groove 53 can be customized according to the size of the timing belt 40 to ensure that the timing belt 40 can be firmly embedded therein. Thus, the technical solution of this application designs the driving pulley 38 as a gear, the timing belt 40 as a toothed belt, and adds a pressing wheel 52 to ensure the close fit between the timing belt 40 and the driving pulley 38, improving the reliability and stability of the transmission. The belt groove 53 provided on the vertical shaft 5 further fixes the position of the timing belt 40 to prevent it from shifting or loosening.

[0051] As Figure 12 and 15 shown, the housing 37 includes a first half housing 54, a second half housing 55 and a mounting plate 56; the lifting drive assembly 39 and the driving pulley 38 are separately arranged on both sides of the mounting plate 56, and the mounting plate 56 and the cover plate 57 form a channel, and after the housing 37 is docked, a channel opening 58 for the vertical shaft 5 to pass through is formed. The design of the housing 37 adopts the structure of the first half housing 54, the second half housing 55 and the mounting plate 56, so that the lifting drive assembly 39 and the driving pulley 38 can be separately arranged on both sides of the mounting plate 56, simplifying the structure of the housing 37 and facilitating installation and maintenance. The channel formed by the mounting plate 56 and the cover plate 57 and the channel opening 58 formed after the housing 37 is docked ensure the smooth passing of the vertical shaft 5, improving the compactness and stability of the overall structure. The first half housing 54 and the second half housing 55 of the housing 37 can be quickly docked by bolts or buckles, facilitating disassembly and maintenance. The design of the housing 37 adopts the structure of the first half housing 54, the second half housing 55 and the mounting plate 56, so that the lifting drive assembly 39 and the driving pulley 38 can be separately arranged on both sides of the mounting plate 56, simplifying the structure of the housing 37 and facilitating installation and maintenance. The channel formed by the mounting plate 56 and the cover plate 57 and the channel opening 58 formed after the housing 37 is docked ensure the smooth passing of the vertical shaft 5, improving the compactness and stability of the overall structure. Compared with the prior art, the technical solution of this application has significant advantages in terms of transmission efficiency, structural simplification, installation and maintenance, etc.

[0052] In summary, both the tilting and flipping adjustment of the above-mentioned propulsion device for boats and the lifting adjustment of the thruster 7 have a manual-automatic switching function; in the normal use state, the electric control mode is adopted, which can achieve fast and convenient adjustment. And when the electric drive part in the tilting and flipping adjustment or the lifting adjustment of the thruster 7 fails, it can be switched to manual control.

[0053] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill 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 purposes of the present invention.

Claims

1. A propulsion device for a boat, comprising a base unit (1), a tilting and turning seat (3) arranged on the base unit (1) and rotating through a rotating shaft (2), a lifting and lowering drive mechanism (4) arranged on the tilting and turning seat (3), a vertical shaft (5) passing through the tilting and turning seat (3) and the lifting and lowering drive mechanism (4), and a controller (6) arranged at the upper end of the vertical shaft (5) and a propeller (7) at the lower end; characterized in that: - the tilting and turning seat (3) is provided with a locking hook (8) and a slidably arranged pull rod frame (9), a locking rod (10) is fixed on the pull rod frame (9), and the locking rod (10) is slidably arranged on the base unit (1); - the base unit (1) is provided with a tilting drive mechanism and a flip bracket (12) rotatably arranged on the rotating shaft (2); the tilting drive mechanism comprises a displacement block (13) connected to the flip bracket (12); - When the locking hook (8) is locked with the locking rod (10), the tilting and flipping seat (3) is fixed on the base unit (1); - When the tilting bracket (12) and the tilting and flipping seat (3) are linked via the detachable connecting shaft (14), the tilting and flipping drive mechanism drives the displacement block (13) to move so as to drive the tilting bracket (12) to rotate, so that the locking rod (10) is disengaged from the locking hook (8), and the tilting and flipping seat (3) can rotate relative to the base unit (1); - When the connecting shaft (14) is removed, an external force acts on the pull rod frame (9) to drive the locking rod (10) to disengage from the locking hook (8), and the pull rod frame (9) and the tilting and flipping seat (3) can rotate relative to the base unit (1).

2. The propulsion device for a boat according to claim 1, characterized in that: - The flip bracket (12) and the tilting and turning seat (3) are provided with a docking through hole (15), and when the two docking through holes (15) are aligned, a connecting shaft (14) is inserted to enable the flip bracket (12) to be linked with the tilting and turning seat (3); - The tilting and flipping seat (3) is provided with a limit assembly (16), comprising a limit stopper (17) and a limit spring (18) for elastic support; the connecting shaft (14) is provided with a step surface (19), the limit stopper (17) presses against the step surface (19) to limit the axial movement of the connecting shaft (14); the limit stopper (17) is provided with a lever (20) extending outward from the tilting and flipping seat (3).

3. The propulsion device for a boat according to claim 1, characterized in that: - the tilt drive mechanism comprises a screw rod (21) rotatably arranged on the base unit (1), a tilt drive motor (22) driving the screw rod (21), and a displacement block (13) meshing with the screw rod (21); one end of the screw rod (21) is rotatably arranged on a positioning seat (23) of the base unit (1), and the other end is connected to an output shaft of the tilt drive motor (22); - The displacement block (13) is provided with sliding shafts (24) at both ends, and radial strip holes (26) are provided on the two connecting pieces (25) of the flip bracket (12); the sliding shafts (24) are embedded in the strip holes (26), and when the displacement block (13) moves, the flip bracket (12) is driven to rotate around the rotation axis (2).

4. The propulsion device for a boat according to claim 1, characterized in that: A linkage piece (27) is hingedly connected to the flip bracket (12), and the lock rod (10) passes through an adjustment hole (28) of the linkage piece (27); when the flip bracket (12) rotates, the linkage piece (27) drives the lock rod (10) to disengage from the lock hook (8).

5. The propulsion device for a boat according to claim 1, characterized in that: The locking rod (10) is slidably disposed in the base sliding hole (29), and a tensioning spring (30) for tensioning the locking rod (10) is provided on the base unit (1); the lower end surface of the locking hook (8) is an inclined surface (31), and when the tilting and flipping seat (3) is flipped down, the inclined surface (31) guides the locking rod (10) into the locking hook (8).

6. The propulsion device for a boat according to claim 1, characterized in that: The side wall of the tilting and flipping seat (3) is provided with a guide column (32), the pull rod frame (9) is provided with a pull rod sliding groove (33), and the guide column (32) is embedded in the sliding groove (33) to limit the sliding path of the pull rod frame (9); when the pull rod frame (9) rotates with the tilting and flipping seat (3), the track of the locking rod (10) is kept aligned with the base sliding hole (29).

7. The propulsion device for a boat according to claim 1, characterized in that: - the rear end of the pull rod frame (9) extends to form a lifting rod (34), and the locking rod (10) is connected to the front end of the pull rod frame (9); - the pull rod frame (9) comprises a lifting rod (34) and connecting rods (35) connecting two sides of the lifting rod (34), and the locking rod (10) passes through the front ends of the connecting rods (35) on both sides and is fixedly connected thereto; - the base unit (1) comprises base side plates (36) on both sides, and base sliding holes (29) are formed on the base side plates (36); - the locking rod (10) passes through the base sliding holes (29) on both sides to form a symmetrical sliding structure; When an external force acts on the lifting rod (34), the locking rod (10) can be driven to disengage from the locking hook (8).

8. The propulsion device for a boat according to claim 1, characterized in that: The lifting drive mechanism (4) comprises a housing (37), a driving pulley (38) and a lifting drive assembly (39); a synchronous belt (40) is provided on the vertical shaft (5), the synchronous belt (40) passes around the driving pulley (38) and is fixedly connected to the vertical shaft (5); an output gear (41) of the lifting drive assembly (39) and the driving pulley (38) are plugged and linked via a coupling (42), and the coupling (42) can move axially to disengage the output gear (41) or the driving pulley (38); and an end of the coupling (42) is connected to an operating component (43) that can rotate relatively.

9. The propulsion device for a boat according to claim 8, characterized in that: - the coupling shaft (42) is a spline shaft, and its external gear (44) is meshed with the output gear (41) and the axial center hole (45) of the driving pulley (38); when the coupling shaft (42) is axially moved, the external gear (44) and the axial center hole (45) are disengaged; - The side wall of the housing (37) is provided with an axial hole (46), and the side wall of the axial hole (46) is provided with an axial slide groove (47) and a circumferential slide groove (48); the shaft portion (49) of the operating component (43) is inserted into the axial hole (46), and the slider (50) is embedded in the slide groove (47) to guide the axial movement; the operating component (43) is rotated to make the slider (50) rotate into the circumferential slide groove (48) to limit the displacement of the coupling shaft (42); the operating component (43) is completely received in the notch (51) of the housing (37).

10. The propulsion device for a boat according to claim 8, characterized in that: - the driving pulley (38) is a gear, and the synchronous belt (40) is a toothed belt; the lifting drive mechanism (4) further comprises a clamping wheel (52) for clamping the vertical shaft (5) to make the synchronous belt (40) fit; the vertical shaft (5) is provided with a belt groove (53) for the synchronous belt (40) to be embedded; The housing (37) comprises a first half housing (54), a second half housing (55) and a mounting plate (56); the lifting drive assembly (39) and the driving pulley (38) are arranged on both sides of the mounting plate (56); the mounting plate (56) and the cover plate (57) form a passage; and the housing (37) is butt-jointed to form a passage opening (58) for the vertical shaft (5) to pass through.

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