An electric rudder device for an electric boat

Abstract

This invention provides an electric steering gear device for electric ships, comprising two steering assemblies and a linkage assembly. Each steering assembly includes a steering gear, a reducer, and a rudder blade. The input shaft of the reducer faces upwards, and its output shaft is connected to the rudder blade. The linkage assembly includes two rotating members and a connecting rod. The input shaft of each reducer is connected to one of the rotating members, and the connecting rod is rotatably connected to both rotating members. Each rotating member is connected to one of the steering gears. Through linkage, a single electric steering gear drives multiple rudder blades, improving the reliability of steering and the stability of operation of the electric ship.

Description

Technical Field

[0001] This utility model relates to the field of electric ship technology, and in particular to an electric steering gear device for electric ships. Background Technology

[0002] With the rapid development of electric ship technology, electric ships are widely used in coastal transportation, tourism, and other fields due to their advantages such as low noise and zero emissions. Steering control of electric ships typically relies on an electric rudder to drive the rudder blade. Referring to patent document CN110304229A, this includes a rudder, a reducer, and a rudder blade. The input shaft of the reducer is arranged upwards and connected to the rudder, while the output shaft of the reducer is arranged downwards and connected to the rudder. The rudder drives the rudder blade to deflect by reducing the speed, changing the direction of the water flow to generate steering torque.

[0003] Currently, the steering systems of existing electric ships adopt a multi-steering independent drive mode, that is, each electric steering motor independently drives one rudder blade to achieve synchronous steering.

[0004] However, when one of the electric steering gears fails to work due to a malfunction (such as motor damage, circuit failure, component aging, or mechanical jamming), the rudder blade connected to it will lose its steering ability. Rudder blade failure will cause uneven force on both sides of the hull, resulting in course deviation, increased rolling or pitching, and even loss of ship control. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing an electric steering gear device for electric ships. This device enables a single electric steering gear to drive multiple rudder blades through linkage, thereby improving the reliability of steering and the stability of operation of electric ships.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An electric steering gear device for an electric ship, comprising:

[0008] Two steering assemblies, each including a servo motor, a reducer, and a rudder blade, wherein the input shaft of the reducer is arranged upwards, and the output shaft of the reducer is connected to the rudder blade;

[0009] A linkage assembly comprising two rotating members and a connecting rod, wherein the input shaft of each reducer is connected to one of the rotating members, the connecting rod is rotatably connected to both of the rotating members, and each rotating member is connected to a servo motor.

[0010] In a preferred embodiment, the connecting rod is located on one side of the line connecting the centers of the two rotating parts, and the two servos are located on the other side of the line connecting the centers of the two rotating parts.

[0011] In a preferred embodiment, the rotating component includes:

[0012] Two plates, which are connected to the input shaft of the reducer;

[0013] A servo motor connecting shaft is provided, which connects the two plates together, and the working shaft of the servo motor is connected to the servo motor connecting shaft.

[0014] A connecting shaft is provided, which connects the two plates, and the connecting rod is sleeved on the connecting shaft.

[0015] In a preferred embodiment, the servo motor connecting shaft and the connecting rod connecting shaft are located at both ends of the plate body along its length, and the middle position of the plate body along its length is connected to the input shaft of the reducer.

[0016] In a preferred embodiment, the width of the plate gradually decreases from the middle to both ends.

[0017] In a preferred embodiment, the two servos are located between the two rotating parts, and the working axes of the two servos are respectively facing outward.

[0018] In a preferred embodiment, the servo motor is perpendicular to the reducer.

[0019] Compared with existing technologies, this technical solution has the following advantages:

[0020] The working shafts of the two steering gears, the two rotating parts, and the connecting rods form a parallelogram structure. This ensures that even if one steering gear fails, the other steering gear can still drive both rudder blades to rotate, reducing the likelihood of a single steering gear malfunction causing the connected rudder blades to fail to rotate, thereby improving the reliability of the electric ship's steering and the stability of its operation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the electric steering gear device for electric ships described in this utility model.

[0022] In the diagram: 100 Steering assembly, 110 Servo, 120 Reducer, 130 Rudder, 140 Electric cylinder, 200 Linkage assembly, 210 Rotating component, 211 Plate, 212 Servo connecting shaft, 213 Linkage connecting shaft, 220 Linkage. Detailed Implementation

[0023] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0024] As mentioned in the background section, the existing multi-servo independent drive mode is prone to failure due to servo motor malfunction, which may prevent the connected rudder blades from rotating, thus causing the ship to drift.

[0025] In view of this, please refer to Figure 1 The electric steering gear device for electric ships provided in the embodiments of this utility model can solve this problem, and it will be described in detail below.

[0026] An embodiment of this utility model provides an electric steering gear device for electric ships, comprising:

[0027] Two steering assemblies 100, each steering assembly 100 including a servo motor 110, a reducer 120 and a rudder blade 130, wherein the input shaft of the reducer 120 is arranged upward and the output shaft of the reducer 120 is connected to the rudder blade 130;

[0028] The linkage assembly 200 includes two rotating parts 210 and a connecting rod 220. The input shaft of each reducer 120 is connected to one of the rotating parts 210. The connecting rod 220 is rotatably connected to the two rotating parts 210. Each rotating part 210 is connected to one of the servo motors 110.

[0029] The two steering assemblies 100 are linked by the linkage assembly 200. When one of the servo motors 110 drives its connected rotating component 210 to rotate, the rotating component 210 drives its corresponding rudder blade 130 to rotate. Simultaneously, since the linkage 220 is rotatably connected to both rotating components 210, it can also drive the other rudder blade 130 to rotate. Thus, even if one servo motor 110 fails, the other servo motor 110 can still drive both rudder blades 130 to rotate, reducing the risk of a single servo motor 110 failing and causing its connected rudder blade 130 to fail to rotate, thereby improving the reliability and operational stability of the electric ship's steering.

[0030] The servo motor 110 can be combined with the electric cylinder 140, changing its working axis from rotation to linear motion, thereby driving the rotating component 210 to rotate around the position where it is connected to the input shaft of the reducer 120. The combination structure of the servo motor 110 and the electric cylinder 140 can be found in patent document CN214743130U.

[0031] Specifically, the center of the rotating component 210 along its length is connected to the input shaft of the reducer 120, and the servo motor 110 is positioned perpendicular to the reducer 120. The working shaft of the servo motor 110 is connected to one end of the rotating component 210 along its length. When the servo motor 110 drives its working shaft to move linearly, it exerts a pushing and pulling force on the connection between the working shaft and the rotating component 210, thereby causing the rotating component 210 to rotate around its center position.

[0032] Since the servo motor 110 is perpendicular to the reducer 120, compared with the prior art where the servo motor 110 and the reducer 120 are kept in the same straight line direction, the vertical space of the entire device is reduced, and the space utilization rate is improved.

[0033] like Figure 1 As shown, the two ends of the rotating component 210 in the length direction are respectively connected to the output shaft of the servo motor 110 and the connecting rod 220, wherein the connecting rod 220 is located on one side of the line connecting the centers of the two rotating components 210, and the two servo motors 110 are located on the other side of the line connecting the centers of the two rotating components 210.

[0034] As can be seen, the working shafts of the two servo motors 110, the two rotating parts 210, and the connecting rod 220 form a parallelogram structure. The two rotating parts 210 correspond to the two short sides of the parallelogram, and the working shafts of the two servo motors 110 and the connecting rod 220 correspond to the two long sides of the parallelogram. If one servo motor 110 drives its connected rotating part 210 to rotate clockwise by a certain angle, under the action of the parallelogram structure, the other rotating part 210 will also rotate clockwise by the same angle, thus ensuring that the two rudder blades 130 move synchronously.

[0035] It is known that the angle at which the rudder blade 130 can deflect relative to the longitudinal section of the electric ship is typically 35°. The parallelogram structure can enable the rudder motor 110 to simultaneously drive the two rudder blades 130 to deflect 35° to both sides, which significantly improves the efficiency and stability of the rudder motor's steering.

[0036] The two servo motors 110 are located between the two rotating members 210, with the working axes of the two servo motors 110 facing outwards respectively. This compact arrangement effectively utilizes space and reduces the horizontal footprint of the entire device.

[0037] like Figure 1 As shown, the rotating component 210 includes:

[0038] Two plates 211 are connected to the input shaft of the reducer 120;

[0039] A servo motor connecting shaft 212 is connected between the two plates 211, and the working shaft of the servo motor 110 is connected to the servo motor connecting shaft 212.

[0040] A connecting shaft 213 is connected between the two plates 211, and a connecting rod 220 is sleeved on the connecting shaft 213.

[0041] The servo motor connecting shaft 212 and the connecting rod connecting shaft 213 are parallel and vertically arranged. The working shaft of the servo motor 110 is sleeved on the servo motor connecting shaft 212. Therefore, the servo motor 110 drives the rotating component 210 to rotate. Since the connecting rod 220 is sleeved on the connecting rod connecting shaft 213, the rotation of the rotating component 210 will drive the connecting rod 220 to move. The connecting rod 220 is connected to other rotating components 210. Through the geometric constraints of the parallelogram structure, the two rotating components 210 can rotate synchronously, thereby realizing the synchronous rotation of the two rudder blades 130.

[0042] refer to Figure 1 The two plates 211 are arranged along the axis of the reducer 120. The servo connecting shaft 212 and the connecting rod connecting shaft 213 are located at both ends of the plate 211 along its length, and the middle position of the plate 211 along its length is connected to the input shaft of the reducer 120.

[0043] The width of the plate 211 gradually decreases from the middle to both ends. The wider middle part of the plate 211 provides sufficient contact area and structural strength for connection with the input shaft of the reducer 120, while the gradually narrowing ends make the overall structure more compact.

[0044] like Figure 1 As shown, when the working shaft of the left servo motor 110 retracts to its initial position and the working shaft of the right servo motor 110 extends to its maximum distance, both rudder blades 130 deflect to the left. Conversely, when the working shaft of the left servo motor 110 extends to its maximum distance and the working shaft of the right servo motor 110 retracts to its initial position, both rudder blades 130 deflect to the right.

[0045] The operation method of the electric steering gear of the electric ship is as follows:

[0046] When the two servo motors 110 receive a left turn signal, the left servo motor 110 drives its working shaft to extend, and the right servo motor 110 drives its working shaft to retract, so that the two rotating parts 210 rotate counterclockwise in the top view, thereby driving the two rudder blades 130 to rotate counterclockwise in the top view, that is, the two rudder blades 130 deflect synchronously. Looking forward from the stern, the rudder blades 130 deflect to the right, thereby controlling the electric boat to turn left.

[0047] When the left servo motor 110 malfunctions, the right servo motor 110 drives the right rotating component 210 to rotate counterclockwise from a top-view angle. Since the connecting rod 220 is rotatably connected to the two rotating components 210 respectively, forming a parallelogram structure, when the right rotating component 210 rotates counterclockwise, through the transmission of the connecting rod 220, the left rotating component 210 rotates counterclockwise synchronously from a top-view angle, thereby causing the two rudder blades 130 to deflect to the right synchronously.

[0048] An elastic connector may be provided between the working shaft of the servo motor 110 and the rotating component 210. The elastic connector includes a tension spring and a spring, and is fixed to the working shaft of the servo motor 110 and the rotating component 210 by bolts or the like.

[0049] In existing technology, a power-off and clutch design allows the servo motor 110 to operate in an idle state when it malfunctions, thus accommodating the synchronous rotation of the two rotating parts 210. Specifically, when the left servo motor 110 malfunctions, a power-off process is performed. At this time, the clutch between the servo motor 110 and the electric cylinder 140 loses its magnetic force, causing the servo motor 110 to no longer maintain a transmission connection with the electric cylinder 140. This design ensures that the working shaft of the left servo motor 110 is no longer driven by the servo motor and is in an idle state, thereby enabling the rotating parts 210 to rotate and push / pull.

[0050] In summary, the working shafts of the two servo motors 110, the two rotating parts 210, and the connecting rod 220 form a parallelogram structure. This ensures that even if one servo motor 110 fails, the other servo motor 110 can still drive the two rudder blades 130 to rotate, reducing the likelihood of the rudder blades 130 failing to rotate due to a single servo motor 110 failure, thereby improving the reliability of the electric ship's steering and the stability of its operation.

[0051] The embodiments described above are only used to illustrate the technical ideas and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. The scope of patent application of this utility model should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in this utility model still fall within the patent scope of this utility model.

Claims

1. An electric steering gear device for an electric ship, characterized in that, include: Two steering assemblies (100) are provided, each including a servo motor (110), a reducer (120) and a rudder (130). The input shaft of the reducer (120) is arranged upward, and the output shaft of the reducer (120) is connected to the rudder (130). The linkage assembly (200) includes two rotating parts (210) and a connecting rod (220). The input shaft of each of the reducers (120) is connected to one of the rotating parts (210), the connecting rod (220) is rotatably connected to the two rotating parts (210), and each of the rotating parts (210) is connected to one of the servo motors (110).

2. The electric steering gear device for electric ships as described in claim 1, characterized in that, The connecting rod (220) is located on one side of the line connecting the centers of the two rotating parts (210), and the two servo motors (110) are located on the other side of the line connecting the centers of the two rotating parts (210).

3. The electric steering gear device for electric ships as described in claim 1, characterized in that, The rotating component (210) includes: Two plates (211) are connected to the input shaft of the reducer (120); Servo connecting shaft (212), the servo connecting shaft (212) is connected between the two plates (211), and the working shaft of the servo (110) is connected to the servo connecting shaft (212); A connecting shaft (213) is connected between the two plates (211), and a connecting rod (220) is sleeved on the connecting shaft (213).

4. The electric steering gear device for electric ships as described in claim 3, characterized in that, The servo motor connecting shaft (212) and the connecting rod connecting shaft (213) are located at both ends of the plate (211) along its length, and the middle position of the plate (211) along its length is connected to the input shaft of the reducer (120).

5. The electric steering gear device for an electric ship as described in claim 3, characterized in that, The width of the plate (211) gradually decreases from the middle to both ends.

6. The electric steering gear device for an electric ship as described in claim 1, characterized in that, The two servo motors (110) are located between the two rotating parts (210), and the working shafts of the two servo motors (110) are respectively facing outward.

7. The electric steering gear device for an electric ship as described in claim 1, characterized in that, The servo motor (110) is perpendicular to the reducer (120).

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