Double-paddle ship propeller

Abstract

The utility model discloses a double-blade ship thruster which comprises an installation box, a first propeller is arranged on one side of the installation box, a second propeller is arranged on the side, close to the installation box, of the first propeller, the double-blade ship thruster comprises a linkage device, and the linkage device is installed between the installation box and the first propeller. The utility model relates to the technical field of ship propellers, through the cooperation of a servo motor, a driving rod and a reversing device, when the servo motor drives the driving rod to rotate, a driving gear is driven to rotate at the same time, through the meshing of the driving gear and a first transmission gear, a rotating drum is driven to rotate in a mounting box, and a second propeller is driven to rotate; and when the driving gear rotates, the reversing device can drive the first propeller to rotate, so that the power provided by the single motor for driving the double propellers to rotate is more sufficient.

Description

Technical Field

[0001] This utility model relates to the field of ship propulsion technology, specifically a twin-bladed ship propulsion device. Background Technology

[0002] A propeller is a device that converts any form of energy into mechanical energy. It generates thrust by rotating blades or spraying water (air) and can be used to propel vehicles forward. Most ships in water use the rotation of propellers to move the ship.

[0003] In existing technology, a servo motor drives the drive gear to rotate, and the rotation of the driven gear and the drive gear together causes the connecting rod to drive the propeller to rotate, thereby propelling the ship to move in the water.

[0004] However, in actual use, since the propulsion force of the servo motor is fixed when it drives the propeller to rotate, when the resistance in the water increases, such as when the ship's draft increases due to the load of cargo or when it moves against the current, the output power of the servo motor reaches its maximum, and the speed driven by the single propeller is also limited, resulting in insufficient power. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a dual-bladed marine propulsion system. This system solves the problem that, in actual use, the propulsive force of the servo motor driving the propeller blades is fixed. When the resistance in the water increases, such as when the ship's draft increases due to the load of cargo or when moving against the current, the output power of the servo motor reaches its maximum, which limits the speed propelled by the single propeller, resulting in insufficient power.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a twin-bladed marine propeller, comprising a mounting box, a first propeller disposed on one side of the mounting box, and a second propeller disposed on the side of the first propeller near the mounting box. The twin-bladed marine propeller includes a linkage device installed between the mounting box and the first propeller; a connecting assembly installed on the top of the mounting box; and a protective device installed on the outer wall of the first propeller. The linkage device drives the first and second propellers to rotate synchronously, the connecting assembly secures the propeller to the hull, and the protective device protects the first propeller.

[0007] Preferably, the linkage device includes a servo motor, which is positioned above the mounting box; a drive rod is fixedly connected to the output end of the servo motor and passes through the top of the mounting box via a sealed bearing; a drive gear is fixedly connected to one end of the drive rod extending into the mounting box; a first transmission gear is meshed with the outer wall of the drive gear; a rotating drum is fixedly connected to the outer wall of the first transmission gear, and its outer wall passes through one side of the mounting box via a sealed bearing and is fixedly connected to the inner wall of the second propeller; a reversing device is installed between the drive gear and the first propeller; wherein, through the meshing of the drive gear and the first transmission gear, the servo motor and drive rod drive the rotating drum to rotate, causing the first propeller to rotate, and the reversing device drives the first propeller to rotate synchronously in the opposite direction.

[0008] Preferably, the reversing device includes a second transmission gear, which is meshed with the outer wall of the drive gear; a connecting rod is fixedly connected to the inner wall of the second transmission gear and rotatably connected to the inner wall of the mounting box via a bearing, and is fixedly connected to the inner wall of the first propeller via a sealed bearing penetrating one end of the rotating cylinder; wherein, the first propeller is rotated by the cooperation of the second transmission gear and the connecting rod.

[0009] Preferably, the connecting assembly includes a fixing frame, which is fixedly connected to the top of the mounting box, and the top is fixedly connected to the outer wall of the servo motor, and is rotatably connected to the output end of the servo motor through a sealed bearing; a connecting frame is fixedly connected to one side of the outer wall of the fixing frame; wherein, through the cooperation of the fixing frame and the connecting frame, the mounting box is installed on the hull.

[0010] Preferably, the protective device includes a protective shell disposed on the outer wall of the first propeller; a clamping plate is fixedly connected to the outer wall of the protective shell by bolts; a support rod is fixedly connected to the outer wall of the clamping plate; a limiting strip is fixedly connected to the end of the support rod away from the clamping plate; an insert rod is inserted into the inner wall of the limiting strip and fixedly connected to the outer wall of the mounting box; a locking block is rotatably connected to the inner wall of the insert rod and abuts against the outer wall of the limiting strip; wherein, through the cooperation of the clamping plate and the support rod, the protective shell is installed on the outer wall of the first propeller, and through the cooperation of the locking block and the insert rod, the limiting strip is fixed.

[0011] Beneficial effects

[0012] This invention provides a twin-bladed marine propeller. It offers the following advantages: Through the cooperation of a servo motor, a drive rod, and a reversing device, when the servo motor drives the drive rod to rotate, it simultaneously drives the drive gear to rotate. The drive gear meshes with the first transmission gear, causing the rotating drum to rotate inside the mounting box and also driving the second propeller to rotate. Simultaneously, the rotation of the drive gear causes the reversing device to drive the first propeller to rotate. This results in more power being provided by a single motor driving two propellers.

[0013] By using the protective shell, support rod, and limiting strip together, before installing the protective shell, the limiting strip at the end of the support rod is placed on the outer wall of the insertion rod. After the insertion rod passes through the limiting strip, the locking block is rotated so that the locking block is pressed against the outer wall of the limiting strip. At this time, the protective shell is inserted into the clamping plate and fixed with bolts. Under the action of the protective shell, the limiting strip is always pressed against the outer wall of the locking block, ensuring that the propeller blade will not be impacted when it is working. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the appearance of the present utility model;

[0016] Figure 3 for Figure 1 A schematic diagram of the structure of the drive rod, the drive gear, and the first transmission gear;

[0017] Figure 4 for Figure 1 A schematic diagram of the structure of the second propeller, support rod, and rotating drum.

[0018] In the diagram: 1. Mounting box; 11. First propeller; 12. Second propeller; 2. Linkage device; 21. Servo motor; 22. Drive rod; 23. Drive gear; 24. First transmission gear; 25. Rotary drum; 26. Reversing device; 261. Second transmission gear; 262. Connecting rod; 3. Connecting assembly; 31. Fixing frame; 32. Connecting frame; 4. Protective device; 41. Protective shell; 42. Clamping plate; 43. Support rod; 44. Limiting strip; 45. Inserting rod; 46. Locking block. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In actual use, since the propulsion force of the servo motor is fixed when it drives the propeller to rotate, when the resistance in the water increases, such as when the ship's draft increases due to the load of cargo or when it moves against the current, the output power of the servo motor reaches its maximum, and the speed driven by the single propeller is also limited, resulting in insufficient power.

[0021] In view of this, the present invention provides a twin-bladed ship propulsion device, which solves the problem that in actual use, when the servo motor drives the propeller blades to rotate, the propulsion force is fixed. When the resistance in the water increases, such as when the ship's draft increases due to the load of cargo or when moving against the current, the output power of the servo motor reaches its maximum, and the speed driven by the single propeller is also limited, resulting in insufficient power.

[0022] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0023] Example 1: By Figure 1-4 It is known that a twin-bladed marine propeller includes a mounting box 1, a first propeller 11 is disposed on one side of the mounting box 1, and a second propeller 12 is disposed on the side of the first propeller 11 near the mounting box 1. The twin-bladed marine propeller includes a linkage device 2, a connecting assembly 3, and a protective device 4. The linkage device 2 is installed between the mounting box 1 and the first propeller 11; the connecting assembly 3 is installed on the top of the mounting box 1; and the protective device 4 is installed on the outer wall of the first propeller 11. The linkage device 2 drives the first propeller 11 and the second propeller 12 to rotate synchronously, the connecting assembly 3 is used to install the propeller on the hull, and the protective device 4 protects the first propeller 11.

[0024] In the specific implementation process, it is worth noting that the first propeller 11 and the second propeller 12 are similar in size, and under the drive of the linkage device 2, one rotates in reverse and the other rotates in the forward direction, and the two rotate at the same speed. In this way, the thrust will be maximized, enabling the ship to move quickly. The connecting component 3 can install the propeller on the hull, and the installation height can be adjusted by bolts. The protective device 4 is installed on the outside of the propeller, which can prevent the propeller from being impacted when it is working or not working.

[0025] Furthermore, the linkage device 2 includes a servo motor 21, a drive rod 22, a drive gear 23, a first transmission gear 24, a rotating drum 25, and a reversing device 26. The servo motor 21 is positioned above the mounting box 1; the drive rod 22 is fixedly connected to the output end of the servo motor 21 and passes through the top of the mounting box 1 via a sealed bearing; the drive gear 23 is fixedly connected to one end of the drive rod 22 extending into the mounting box 1; the first transmission gear 24 is meshed with the outer wall of the drive gear 23; and the rotating drum 25 is fixedly connected to the outer wall of the first transmission gear 24. The outer wall is fixedly connected to the inner wall of the second propeller 12 through a sealed bearing through one side of the mounting box 1; the reversing device 26 is installed between the drive gear 23 and the first propeller 11; wherein, through the meshing of the drive gear 23 and the first transmission gear 24, the servo motor 21 and the drive rod 22 drive the rotating drum 25 to rotate, thereby rotating the first propeller 11, and the reversing device 26 drives the first propeller 11 to rotate synchronously in the opposite direction. The model of the servo motor 21 is not limited, as long as it meets the specific application, but it must be a waterproof motor.

[0026] In the specific implementation process, it is worth noting that although the rotation directions of the first propeller 11 and the second propeller 12 are different, the direction of their blades is the same. When the two rotate synchronously, the direction of propulsion will be the same. The drive gear 23 and the first transmission gear 24 are both bevel gears and they mesh together. When the servo motor 21 drives the drive rod 22 to rotate, the meshing of the drive gear 23 and the first transmission gear 24 will cause the drum 25 to rotate synchronously, thereby driving the second propeller 12 to rotate. When the drive gear 23 rotates, the reversing device 26 will drive the first propeller 11 to rotate in the opposite direction, so that the first propeller 11 rotates synchronously. The thrust generated by both at the same time will be maximized, causing the ship to move quickly.

[0027] Furthermore, the reversing device 26 includes a second transmission gear 261 and a connecting rod 262. The second transmission gear 261 is meshed with the outer wall of the driving gear 23; the connecting rod 262 is fixedly connected to the inner wall of the second transmission gear 261 and rotatably connected to the inner wall of the mounting box 1 through a bearing, and is fixedly connected to the inner wall of the first propeller 11 through one end of the rotating cylinder 25 via a sealed bearing; wherein, the first propeller 11 is rotated by the cooperation of the second transmission gear 261 and the connecting rod 262.

[0028] In the specific implementation process, it is worth noting that the second transmission gear 261 is the same as the driving gear 23 and the first transmission gear 24, which is also a bevel gear. Furthermore, the outer wall of the second transmission gear 261 meshes with the outer wall of the driving gear 23. Therefore, when the second propeller 12 rotates, the first propeller 11 will also rotate in the opposite direction synchronously. A sealed bearing is provided between the rotating drum 25 and the connecting rod 262 to prevent water from entering the mounting box 1 through the gap between the rotating drum 25 and the connecting rod 262.

[0029] Specifically, when using this twin-bladed marine propeller, during installation, the propeller is mounted on a designated position on the ship using the connecting assembly 3. The servo motor 21 drives the drive rod 22 to rotate, and the outer wall of the drive gear 23 meshes with the outer walls of the first transmission gear 24 and the second transmission gear 261, causing the rotating drum 25 to drive the second propeller 12 to rotate. Meanwhile, the second transmission gear 261 on the other side drives the connecting rod 262 to rotate. Since the connecting rod 262 passes through the rotating drum 25, it drives the first propeller 11 to rotate synchronously. The thrust generated by the rotation of the two propellers is integrated, thereby increasing the thrust of the propeller.

[0030] Example 2: From Figure 1-4 It is known that the connecting component 3 includes a fixing frame 31 and a connecting frame 32. The fixing frame 31 is fixedly connected to the top of the mounting box 1, and the top is fixedly connected to the outer wall of the servo motor 21, and is rotatably connected to the output end of the servo motor 21 through a sealed bearing; the connecting frame 32 is fixedly connected to one side of the outer wall of the fixing frame 31; wherein, through the cooperation of the fixing frame 31 and the connecting frame 32, the mounting box 1 is installed on the hull;

[0031] In the specific implementation process, it is worth noting that the height of the servo motor 21 is raised by the fixing frame 31 to avoid the servo motor 21 being too close to the water surface. The outer wall of the connecting frame 32 has several through holes. When installing the thruster, the bolts are passed through the connecting frame 32 and threadedly connected to the hull to fix the thruster to the hull.

[0032] Furthermore, the protective device 4 includes a protective shell 41, a clamping plate 42, a support rod 43, a limiting strip 44, an insert rod 45, and a locking block 46. The protective shell 41 is disposed on the outer wall of the first propeller 11; the clamping plate 42 is fixedly connected to the outer wall of the protective shell 41 by bolts; the support rod 43 is fixedly connected to the outer wall of the clamping plate 42; the limiting strip 44 is fixedly connected to the end of the support rod 43 away from the clamping plate 42; the insert rod 45 is inserted into the inner wall of the limiting strip 44 and fixedly connected to the outer wall of the mounting box 1; the locking block 46 is rotatably connected to the inner wall of the insert rod 45 and abuts against the outer wall of the limiting strip 44; wherein, through the cooperation of the clamping plate 42 and the support rod 43, the protective shell 41 is installed on the outer wall of the first propeller 11, and through the cooperation of the locking block 46 and the insert rod 45, the limiting strip 44 is fixed.

[0033] In the specific implementation process, it is worth noting that before installing the protective shell 41, the limiting strip 44 at the end of the support rod 43 is fitted onto the outer wall of the insertion rod 45, and after the insertion rod 45 passes through the limiting strip 44, the locking block 46 is rotated so that the locking block 46 is pressed against the outer wall of the limiting strip 44. At this time, the protective shell 41 is inserted into the clamping plate 42 and fixed with bolts. Under the action of the protective shell 41, the limiting strip 44 is always pressed against the outer wall of the locking block 46, ensuring that the spiral blade will not be impacted when it is working.

[0034] Specifically, based on the above embodiments, when installing the thruster, the protective device 4 can be selected and installed according to the underwater environment. During installation, first rotate the locking block 46 so that the locking block 46 and the insertion rod 45 are aligned and located in the opening at the end of the insertion rod 45. This allows the insertion rod 45 and the locking block 46 to pass through the limiting strip 44 simultaneously. The limiting strip 44 is then fitted onto the outer wall of the insertion rod 45 and pressed down, causing a slight deformation of the clamping plate 42. This ensures that the locking block 46 completely passes through the limiting strip 44, and the limiting strip 44 is completely fitted onto the outer wall of the insertion rod 45. After the wall is closed, rotate the locking block 46 so that the locking block 46 and the limiting strip 44 are perpendicular to each other at ninety degrees. Remove the pressure on the support rod 43 and the clamping plate 42. After the clamping plate 42 recovers its elastic deformation, make the outer wall of the locking block 46 press against the outer wall of the limiting strip 44. Insert the clamping plate 42 at the end of the support rod 43 into the outer wall of the protective shell 41 and fix it with bolts. In this way, under the action of the protective shell 41, the limiting strip 44 at the other end of the support rod 43 presses against the outer wall of the locking block 46. This fixes the protective shell 41 to the outer wall of the propeller and protects it.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A twin-bladed marine propeller comprising a mounting box (1), characterised in that: The side of the installation box (1) is provided with a first propeller (11), the first propeller (11) is provided with a second propeller (12) near the side of the installation box (1), the double-blade ship propeller comprises: Linkage device (2), installed between the installation box (1) and the first propeller (11); Connecting assembly (3), installed on the top of the installation box (1); Protective device (4), installed on the outer wall of the first propeller (11); Wherein, the first propeller (11) and the second propeller (12) are driven to rotate synchronously by the linkage device (2), the propeller is installed on the ship body by the connecting assembly (3), and the first propeller (11) is protected by the protective device (4).

2. A twin-bladed marine propulsor according to claim 1, characterised in that: The linkage device (2) comprises: Servo motor (21), arranged above the installation box (1); Drive rod (22), fixedly connected to the output end of the servo motor (21) and penetrating the top of the installation box (1) through a sealing bearing; Driving gear (23), fixedly connected to one end of the drive rod (22) extending into the installation box (1); First transmission gear (24), meshing connection to the outer wall of the driving gear (23); Rotary drum (25), fixedly connected to the outer wall of the first transmission gear (24), and the outer wall is fixedly connected to the inner wall of the second propeller (12) through a sealing bearing penetrating one side of the installation box (1); Reverse device (26), installed between the driving gear (23) and the first propeller (11); Wherein, the servo motor (21) and the drive rod (22) drive the rotary drum (25) to rotate, and the first propeller (11) rotates through the meshing of the driving gear (23) and the first transmission gear (24), and the reverse device (26) drives the first propeller (11) to rotate reversely synchronously.

3. A twin-bladed marine propulsor according to claim 2, characterised in that: The reverse device (26) comprises: Second transmission gear (261), meshing connection to the outer wall of the driving gear (23); Connecting rod (262), fixedly connected to the inner wall of the second transmission gear (261) and rotatably connected to the inner wall of the installation box (1) through a bearing, and fixedly connected to the inner wall of the first propeller (11) through a sealing bearing penetrating one end of the rotary drum (25); Wherein, the first propeller (11) rotates through the cooperation of the second transmission gear (261) and the connecting rod (262).

4. A twin-bladed marine propulsor according to claim 1, characterised in that: The connecting assembly (3) comprises: Fixed frame (31), fixedly connected to the top of the installation box (1), and the top is fixedly connected to the outer wall of the servo motor (21) and rotatably connected to the output end of the servo motor (21) through a sealing bearing; Connecting frame (32), fixedly connected to one side of the outer wall of the fixed frame (31); Wherein, the installation box (1) is installed on the ship body through the cooperation of the fixed frame (31) and the connecting frame (32).

5. A twin-bladed marine propulsor according to claim 1 wherein: The protective device (4) comprises: Protective shell (41), arranged on the outer wall of the first propeller (11); Clamp plate (42), fixedly connected to the outer wall of the protective shell (41) by bolts; Supporting rod (43), fixedly connected to the outer wall of the clamp plate (42); A limiting strip (44) is fixedly connected to one end of the support rod (43) away from the clamping plate (42); A plug rod (45) is inserted into the inner wall of the limiting strip (44) and is fixedly connected to the outer wall of the mounting box (1); A clamping block (46) is rotatably connected to the inner wall of the plug rod (45) and abuts against the outer wall of the limiting strip (44); Wherein, the cooperation of the clamping plate (42) and the support rod (43) enables the protective shell (41) to be mounted on the outer wall of the first propeller (11), and the cooperation of the clamping block (46) and the plug rod (45) enables the limiting strip (44) to be fixed.

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