Double-rudder propeller device of unmanned ship

Abstract

The utility model provides a double-rudder propeller device of an unmanned ship. The unmanned ship comprises a tail mechanism of the unmanned ship, a left thruster and a right thruster are symmetrically arranged on the left side and the right side of the lower end of the tail mechanism, ducts are arranged in the left thruster and the right thruster correspondingly, propellers are arranged in the ducts, thruster rotating shafts are fixedly matched with the propellers, and the left thruster and the right thruster are arranged in the ducts correspondingly. The propeller rotating shaft penetrates through the upper portion of the duct and is connected with a propeller control device in the tail mechanism, a rudder is arranged at the front end of the duct, and the rudder is connected with a driving device through a rudder rotating shaft. The utility model relates to the field of unmanned ship manufacturing.

Description

Technical Field

[0001] This utility model relates to the field of unmanned vessel manufacturing, and in particular to a dual-rudder propulsion device for unmanned vessels. Background Technology

[0002] An unmanned surface vessel (USV) is a type of vessel that integrates modern technology, enabling it to navigate and perform tasks autonomously without direct human intervention. USVs typically consist of a hull, electrical system, propulsion control system, and communication system, with the propulsion control system playing a crucial role in their navigation.

[0003] Most existing unmanned surface vessels (USVs) use single or dual rudders for propulsion, but these control methods are relatively traditional and suffer from problems such as inflexible steering and susceptibility to malfunctions. For example, traditional USVs often turn by controlling the angle of the rudder, but this method results in a large turning radius, prevents turning on the spot, and increases the structural components of the vessel, raising product costs. In addition, the rudder is easily entangled in floating debris such as seaweed and nets during navigation, causing malfunctions and forcing the vessel to stop. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model proposes a dual-rudder propulsion device for unmanned vessels. It aims to solve the problems of inflexible steering and susceptibility to malfunctions inherent in traditional control methods.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a dual-rudder propulsion device for an unmanned surface vessel, comprising a tail mechanism of the unmanned surface vessel, wherein a left propeller and a right propeller are symmetrically arranged on the left and right sides of the lower end of the tail mechanism, and a propeller is provided inside the left propeller and the right propeller is fixedly fitted with a propeller shaft, the propeller shaft passes through the propeller housing and is connected to a drive motor inside the tail mechanism, and a rudder is provided at the front end of the left propeller and the right propeller, the rudder being connected to a drive device through a rudder shaft.

[0006] Based on the above, the direction control of the unmanned vessel can be achieved in the following ways: First, changing the rotation direction of the propeller to change the course of the unmanned vessel; second, rotating the thruster shaft to change the propulsion direction of the left and right thrusters; third, controlling the rudder shaft through the drive device to adjust the angle of the rudder, thereby adjusting the direction of travel of the unmanned vessel. Furthermore, the left thruster, the right thruster, and the rudder have independent drives, allowing for flexible coordination and improving the maneuverability, speed, and turning efficiency of the unmanned vessel.

[0007] Furthermore, the rear end of the duct is provided with a grid composed of several grid blades arranged in an array, and one side of each grid blade is provided with a bevel.

[0008] Based on the above, the propeller is easily entangled by suspended objects such as weeds and nets during navigation, causing ship malfunctions and forcing it to stop. The grid can isolate these substances and prevent damage to the propeller. One side of the grid blades is provided with a bevel, which reduces water resistance and makes propulsion smoother.

[0009] Furthermore, both sides of the left and right thrusters are provided with thruster wings, and the two ends of the thruster wings are provided with guide surfaces, while the middle part has a parallel structure.

[0010] Based on the above, the propeller wing can make the propeller more stable during underwater movement, thereby improving stability.

[0011] Furthermore, the drive device includes a drive motor, a gearbox, a drive wheel, and a driven wheel. The output shaft of the drive motor is connected to the input end of the gearbox, the output shaft of the gearbox is fixedly engaged with the drive wheel, and the drive wheel and the driven wheel are driven by a synchronous belt. The radius of the drive wheel is smaller than the radius of the driven wheel.

[0012] Based on the above, the output speed of the drive motor is reduced for the first time by the gearbox, and then reduced for the second time through the transmission between the drive wheel and the driven wheel. Since the rudder angle adjustment is generally small, the multi-stage speed reduction makes the angle adjustment easier to control and more precise.

[0013] To more clearly illustrate the above-mentioned features of this utility model and the objectives it aims to achieve, the present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0014] Figure 1 : This is a schematic diagram of the structure of the left and right thrusters of this utility model;

[0015] Figure 2 This is a schematic diagram of the drive device of this utility model;

[0016] Figure 3 This is a schematic diagram of the left thruster of this utility model after the duct shell has been removed.

[0017] Figure 4 : Rear view of the left and right thrusters of this utility model;

[0018] Figure 5 : This is a schematic diagram of the structure of this utility model.

[0019] Explanation of reference numerals: 1. Tail mechanism; 2. Left thruster; 3. Right thruster; 4. Ductwork; 5. Propeller; 6. Thruster shaft; 7. Rudder; 8. Rudder shaft; 9. Drive unit; 10. Grid blade; 11. Grid; 12. Bevel; 13. Thruster wing; 14. Guide surface; 15. Drive motor; 16. Gearbox; 17. Drive wheel; 18. Driven wheel; 19. Synchronous belt. Detailed Implementation

[0020] like Figures 1 to 5 As shown, an unmanned surface vessel (USV) dual-rudder propulsion device includes a tail mechanism 1 of the USV. A left propeller 2 and a right propeller 3 are symmetrically arranged on the left and right sides of the lower end of the tail mechanism 1. Both the left propeller 2 and the right propeller 3 have propellers 5 inside. A propeller shaft 6 is fixedly fitted on the propeller 5. The propeller shaft 6 passes through the propeller housing and is connected to a drive motor 15 inside the tail mechanism 1. A rudder 7 is provided at the front end of both the left propeller 2 and the right propeller 3. The rudder 7 is connected to a drive device 9 through a rudder shaft 8.

[0021] Preferably, the rear end of the duct 4 is provided with a grid 11 composed of several arrayed grid blades 10, and one side of each grid blade 10 is provided with a beveled edge 12. During navigation, the propeller 5 is easily entangled by suspended objects such as weeds and nets, causing ship malfunctions and forcing it to stop. The grid 11 can isolate these substances, preventing damage to the propeller 5. The beveled edge 12 on one side of each grid blade 10 reduces water resistance, making propulsion smoother.

[0022] Preferably, both sides of the left thruster 2 and the right thruster 3 are provided with thruster wings 13, and the two ends of the thruster wings 13 are provided with guide surfaces 14, with a parallel structure in the middle. The thruster wings 13 can make the thrusters more stable during underwater movement and improve stability.

[0023] Preferably, the drive device 9 includes a drive motor 15, a gearbox 16, a drive pulley 17, and a driven pulley 18. The output shaft of the drive motor 15 is connected to the input end of the gearbox 16, and the output shaft of the gearbox is fixedly engaged with the drive pulley 17. The drive pulley 17 and the driven pulley 18 are driven by a synchronous belt 19, and the radius of the drive pulley 17 is smaller than the radius of the driven pulley 18. The output speed of the drive motor 15 is reduced for the first time by the gearbox 16, and then reduced for the second time by the drive pulley 17 and the driven pulley 18. The angle adjustment of the rudder 7 is generally small, and after multiple speed reductions, the angle adjustment can be more easily controlled and precise.

[0024] The specific implementation of this embodiment is as follows: Direction control of the unmanned vessel can be achieved through the following methods: First, changing the rotation direction of the propeller 5 to change the course of the unmanned vessel; second, rotating the thruster shaft 6 to change the propulsion direction of the left thruster 2 and the right thruster 3; third, the drive device 9 can control the rudder shaft 8 to drive the rudder 7 to adjust its angle, thereby adjusting the unmanned vessel's direction of travel. Furthermore, the left thruster 2, the right thruster 3, and the rudder 7 have independent drives, allowing for flexible coordination and improving the unmanned vessel's maneuverability, speed, and steering efficiency.

[0025] The above description is only the optimal solution embodiment of this utility model and is not intended to limit this utility model. Various modifications or substitutions made by those skilled in the art to this utility model without departing from the essence and protection scope of this utility model should also be within the protection scope of this utility model.

Claims

1. A twin rudder propeller arrangement for an unmanned ship comprising a stern mechanism (1) of the unmanned ship, characterized in that: The left and right sides of the lower end of the tail mechanism (1) are symmetrically provided with a left propeller (2) and a right propeller (3), the inside of the left propeller (2) and the right propeller (3) is provided with a duct (4), the inside of the duct (4) is provided with a propeller (5), the propeller (5) is fixedly connected with a propeller rotating shaft (6), the propeller rotating shaft (6) penetrates through the upper part of the duct (4) and is connected with a propeller control device in the tail mechanism (1), the front end of the duct (4) is provided with a rudder (7), the rudder (7) is connected with a driving device (9) through a rudder rotating shaft (8).

2. The unmanned ship twin rudder propeller device according to claim 1, characterized in that: The rear end of the duct (4) is provided with a grid (11) composed of a plurality of arrayed grid leaves (10), one side of the grid leaf (10) is provided with an oblique edge (12).

3. The unmanned ship twin rudder propeller device according to claim 1, characterized in that: The middle part of the left and right sides of the left propeller (2) and the right propeller (3) is provided with a propeller wing (13), the both ends of the propeller wing (13) are provided with a flow guide surface (14).

4. The unmanned ship twin rudder propeller device according to claim 1, characterized in that: The driving device (9) comprises a driving motor (15), a gearbox (16), a driving wheel (17) and a driven wheel (18), the output rotating shaft of the driving motor (15) is connected with the input end of the gearbox (16), the output rotating shaft of the gearbox is fixedly connected with the driving wheel (17), the driving wheel (17) and the driven wheel (18) are driven through a synchronous belt (19), the radius of the driving wheel (17) is smaller than the radius of the driven wheel (18).

Images