A marine electric rudder engine

Abstract

The application discloses a ship electric rudder engine and belongs to the technical field of ship rudder engines.The ship electric rudder engine comprises a base used for fixing an integral assembly of the electric rudder engine, a heat dissipation bottom plate located on the top of the base and fixed on the top of the heat dissipation base through bolts and used for heat dissipation of the electric rudder engine assembly, a driving mechanism located on the top of the heat dissipation bottom plate and connected with the heat dissipation bottom plate through bolts and serving as a power source of the ship electric rudder engine, and a rudder plate located below the base and in transmission connection with the driving mechanism.The ship electric rudder engine has the beneficial effects that: during the operation of the device, the driving motor serves as a core power source; when the driving motor is started and rotated, the rotation of the rotating shaft directly drives the rudder plate to be adjusted at a corresponding angle, so that the turning operation of the ship is realized; the linear motion of the motor is converted into the rotary motion of the rudder plate through a series of mechanical transmission in the process, the accuracy and response speed of the turning are ensured, and the risk of hydraulic oil leakage is greatly reduced.

Description

Technical Field

[0001] This application relates to the field of ship steering technology, and in particular to an electric ship steering gear. Background Technology

[0002] The ship's steering gear is a core component of the ship's navigation control system. Its main function is to precisely control the ship's course according to instructions from the ship's helmsman or automatic navigation system, and to achieve steering maneuvers by driving the rudder blades. In traditional ships, hydraulic steering gears are the most common type. Hydraulic steering gears utilize a hydraulic pump station to generate high-pressure hydraulic oil, and control the flow and direction of the hydraulic oil through valve groups, thereby driving a hydraulic cylinder or hydraulic motor to rotate the rudder blades.

[0003] A search revealed that Chinese Patent Publication No. CN111137431A discloses a novel marine hydraulic steering gear, which includes a steering mechanism and independently supplied electromagnetic reversing steering oil circuits and manual steering oil circuits. By setting a first oil tank corresponding to the electromagnetic reversing steering oil circuit and a second oil tank corresponding to the manual steering oil circuit, the hydraulic oil in one tank can be prevented from being insufficient, thus preventing the entire hydraulic steering gear from malfunctioning and improving the robustness of the entire hydraulic steering gear.

[0004] However, with the continuous development of the shipbuilding industry, especially the increasing demands for environmental protection, energy efficiency, and intelligence, the limitations of traditional hydraulic steering gear have gradually become apparent. Hydraulic systems are complex, comprising multiple components such as hydraulic pump stations, valve groups, and pipelines. This not only increases the system's size and weight but also raises the difficulty of installation and maintenance. The risk of hydraulic oil leakage has always been a safety hazard in ship operations; once a leak occurs, it can not only pollute the ship's environment but also potentially cause serious damage to the marine ecosystem.

[0005] In summary, this invention proposes an innovative electric propulsion steering system for electric ships, addressing the limitations of traditional hydraulic steering gears, and aims to solve the problem of hydraulic oil leakage risk in existing technologies. Summary of the Invention

[0006] One of the objectives of this application is to provide a marine electric steering gear to address the problem that hydraulic systems are complex in structure and prone to hydraulic oil leakage risks.

[0007] To achieve the above objectives, the technical solution adopted in this application is: a marine electric steering gear, comprising:

[0008] The base is used to secure the entire electric servo motor assembly.

[0009] A heat dissipation base plate, located on top of the base, is fixed to the top of the heat dissipation base by bolts and is used to dissipate heat from the electric servo motor assembly.

[0010] The drive mechanism is located on top of the heat dissipation base plate and is connected to the heat dissipation base plate by bolts, serving as the power source for the ship's electric steering gear.

[0011] The rudder plate is located below the base and is connected to the drive mechanism via transmission.

[0012] An auxiliary mechanism, installed on one side of the rudder, is used to assist the rudder in steering;

[0013] The circulation mechanism is connected to the heat dissipation base plate and the inside of the rudder plate, respectively.

[0014] Preferably, the drive mechanism includes a drive motor, which is bolted to the surface of the heat dissipation base plate. The surface of the drive motor is in contact with the surface of the heat dissipation base plate. The output end of the drive motor is connected to a lead screw inside the linear guide rail, and the lead screw is threadedly connected to a slider. The slider is slidably connected to the surface of the linear guide rail. Through the cooperation of the drive motor and the linear guide rail, the rotational motion of the motor is converted into the linear motion of the slider, thereby driving the subsequent transmission mechanism and achieving precise control of the servo plate. The drive motor being mounted on and in contact with the heat dissipation base plate facilitates the timely transfer of heat generated by the motor during operation to the heat dissipation base plate, enabling effective heat dissipation and ensuring the motor operates in a stable temperature environment, extending its service life and improving operational reliability. Simultaneously, this installation method results in a compact structure, facilitating overall layout and installation, making the entire electric servo mechanism structure more rational and improving space utilization.

[0015] Preferably, a rack is mounted on one side of the slider, and a rotating seat is provided on one side of the rack. The rotating seat has teeth on its surface, and these teeth are distributed in an arc-shaped, evenly spaced pattern. The rotating seat meshes with the rack through these teeth. The rotating seat has a slot inside, and the inner wall of the slot has a notch. A connecting shaft is inserted through the slot inside the rotating seat, and the connecting shaft has a protruding structure on its outer surface, which engages with the inner wall of the rotating platform. Through the connection between the slider and the rack, and the meshing between the rack and the rotating seat, the linear motion of the slider is converted into the rotational motion of the rotating seat. This, in turn, drives the rotating shaft to rotate via the connecting shaft, ultimately achieving steering control of the servo plate. This transmission method has a compact structure and high transmission efficiency, accurately converting the linear motion of the motor into the rotational motion required by the servo plate, improving the servo's response speed and control accuracy. Simultaneously, the arc-shaped, evenly spaced teeth design on the rotating seat surface ensures stable meshing with the rack, making the transmission process smoother and more reliable. The engaging structure between the connecting shaft and the internal slot of the rotating base further ensures a stable connection between the rotating base and the shaft, enhances the reliability of the entire transmission system, effectively avoids slippage or loosening during transmission, and improves the stability and service life of the servo motor.

[0016] Preferably, the auxiliary mechanism includes an auxiliary plate, one side of which is rotatably connected to the rudder plate via a shaft. The top of the auxiliary plate is connected to the bottom end of a guide shaft, and the top end of the guide shaft is welded to one end of a sliding rod. One end of the sliding rod has a protruding structure and is inserted into a guide groove. The inner wall of the guide groove slides in contact with the outer wall of the sliding rod. The top end of the guide groove is rotatably connected to a fixing block, which is fixedly installed at the bottom of the base. The auxiliary mechanism enhances the steering response speed and stability of the rudder plate. Specifically, the auxiliary plate and the rudder plate are rotatably connected via a shaft, allowing the rudder plate to rotate and drive the auxiliary plate to rotate accordingly. The structural design of the guide shaft and the sliding rod, as well as the sliding contact of the sliding rod within the guide groove, provide stable guidance for the movement of the auxiliary plate, ensuring its smoothness and accuracy. Simultaneously, the fixed connection between the fixing block and the base provides stable support for the entire auxiliary mechanism, ensuring its stability during operation. This auxiliary mechanism is designed so that the rudder and the auxiliary plate can form a certain angle. When the ship turns, the auxiliary plate can assist the rudder in turning, improve the rudder's turning efficiency and response speed, and thus enhance the ship's maneuverability. This allows the ship to respond to turning commands more quickly and accurately, optimizing the control effect of the ship's navigation.

[0017] Preferably, the rudder plate has a hollow internal structure and includes transverse support plates. These transverse support plates are evenly spaced from top to bottom, and their surfaces are perforated with slots, with adjacent slots staggered. This hollow structure and transverse support plate design achieve a balance between lightweight design and structural strength. The hollow structure reduces the overall weight of the rudder plate, decreasing drag during navigation and improving energy efficiency. Simultaneously, the transverse support plates enhance structural stability, preventing deformation or damage during steering. The staggered slots on the transverse support plates further optimize water flow within the rudder plate, allowing the cooling medium to flow through for longer periods, maximizing heat exchange and improving heat dissipation efficiency, ensuring good performance during extended operation. This structural design not only extends the rudder plate's service life but also enhances the overall performance and reliability of the ship's electric steering gear.

[0018] Preferably, the circulation mechanism includes an inlet component and a return component. The inlet component is connected to the interior of the heat dissipation base plate, and the return component is connected to the interior of the rudder plate. Both the inlet and return components are connected to a circulation pump. The inlet component allows the medium inside the heat dissipation base plate to flow into the rudder plate, and the return component allows the medium inside the rudder plate to flow back into the circulation pump. The circulation pump is connected to the interior of the heat dissipation base plate. This circulation mechanism effectively circulates the cooling medium between the heat dissipation base plate and the rudder plate, improving the overall heat dissipation efficiency of the electric steering gear. Specifically, the inlet component delivers the cooling medium from the heat dissipation base plate to the rudder plate, while the return component returns the cooling medium from the rudder plate to the circulation pump, which then delivers the cooling medium back to the heat dissipation base plate, forming a closed-loop cooling circulation system. This circulation system not only ensures continuous flow of the cooling medium and improves heat dissipation, but also achieves energy savings by utilizing external water for heat exchange during ship navigation. Meanwhile, the design of the circulation mechanism allows the cooling medium to be evenly distributed between the heat dissipation base plate and the rudder plate, further improving the uniformity and efficiency of heat dissipation, extending the service life of the electric servo motor, and improving its operational reliability and stability.

[0019] Preferably, the water inlet assembly includes a drain pipe connected to the output end of the circulation pump, the other end of the drain pipe connected to the interior of the heat dissipation base plate, the interior of the heat dissipation base plate connected to one end of a first connecting pipe, the other end of the first connecting pipe connected to the interior of a first sealing cover, the first sealing cover being fitted onto the outside of the rotating shaft, the top end of the rotating shaft connected to a connecting shaft, the bottom end of the rotating shaft connected to a rudder plate, the interior of the first sealing cover connected to the interior of the rotating shaft, and the interior of the rotating shaft connected to a second connecting pipe extending into the interior of the rudder plate. Through the specific structural design of the water inlet assembly, efficient and stable transmission of the cooling medium from the heat dissipation base plate to the interior of the rudder plate is achieved, ensuring that the cooling medium can flow smoothly from the circulation pump to the heat dissipation base plate, and be guided to the first sealing cover through the first connecting pipe, and then flow into the interior of the rudder plate through the channel inside the rotating shaft. At the same time, the rotating shaft, as a key component connecting the heat dissipation base plate and the rudder plate, has an internal channel design that allows the cooling medium to flow inside it, realizing the dual functions of mechanical transmission and cooling medium transmission, further improving the heat dissipation effect and effectively reducing the temperature of the electric servo motor during operation.

[0020] Preferably, the water return assembly includes a second sealing cover, which communicates with the interior of the rotating shaft. One end of the bottom of the rotating shaft communicates with the interior of the rudder plate, and the second sealing cover communicates with one end of the return pipe. The other end of the return pipe communicates with the circulation pump. Through the specific structural design of the water return assembly, efficient and stable transmission of the cooling medium from the interior of the rudder plate to the circulation pump is achieved. The communication between the second sealing cover and the interior of the rotating shaft ensures that the cooling medium can smoothly flow back from the interior of the rudder plate to the second sealing cover, while preventing leakage of the cooling medium during the return process. The communication between the bottom of the rotating shaft and the interior of the rudder plate allows the cooling medium to flow smoothly from the rudder plate to the rotating shaft, and then into the return pipe through the second sealing cover. The return pipe transports the cooling medium back to the circulation pump, completing a complete cooling cycle. This design of the water return assembly not only ensures an unobstructed return path for the cooling medium, but also improves the sealing and reliability of the system through sealing and channel design. It allows the cooling medium to be recycled throughout the system, improving heat dissipation efficiency, reducing the temperature of the electric steering gear during operation, extending the service life of the equipment, and improving the overall performance and reliability of the ship's electric steering gear.

[0021] Preferably, both the inner surfaces of the first and second sealing covers that contact the rotating shaft are provided with sealing rings, and both the first and second sealing covers are rotatably connected to the rotating shaft. The outer wall of the rotating shaft is provided with two sets of annularly distributed slots, and the bottom and top ends of the rotating shaft are independent cavities. Through the sealing design of the first and second sealing covers, and the structural design of the rotating shaft, the sealing performance and reliability of the entire cooling circulation system are further improved. Specifically, the sealing rings on the inner surfaces of the first and second sealing covers that contact the rotating shaft effectively prevent leakage of the cooling medium at the contact surface between the rotating shaft and the sealing covers, ensuring the closed-loop circulation of the cooling medium within the system and improving the system's sealing performance. Simultaneously, the rotatable connection of both the first and second sealing covers to the rotating shaft ensures that the rotating shaft can rotate freely without affecting the sealing effect, making the entire system more stable and reliable during operation. In addition, the outer wall of the shaft is provided with two sets of annularly distributed slots, and the bottom and top ends of the shaft are independent cavities. This structural design allows the cooling medium to flow smoothly inside the shaft, while ensuring that the independent cavities at both ends of the shaft do not interfere with each other. This further optimizes the flow path of the cooling medium, improves heat dissipation efficiency, and ensures the stability and reliability of the electric servo motor during long-term operation.

[0022] Compared with the prior art, the beneficial effects of this application are as follows:

[0023] During the operation of this device, the drive motor serves as the core power source, with its output end connected to a lead screw inside the linear guide rail. When the drive motor starts and rotates, the lead screw rotates accordingly, converting the motor's rotational motion into the linear movement of the slider along the linear guide rail through a threaded connection with the slider. The linear movement of the slider drives the rack connected to it to move synchronously. The rack's movement further interacts with the meshing teeth on the rotating seat, causing the rotating seat to rotate around its axis. The rotating seat, through the engagement of its internal slot with the connecting shaft and the connection between the connecting shaft and the rotating shaft, ultimately drives the rotating shaft to rotate. The rotation of the rotating shaft directly drives the rudder plate to make corresponding angle adjustments, thereby realizing the ship's steering operation. This process converts the linear motion of the motor into the rotational motion of the rudder plate through a series of mechanical transmissions, ensuring steering accuracy and response speed. It greatly reduces the risk of hydraulic oil leakage; at the same time, when the rudder plate rotates, the linkage mechanism between it and the auxiliary plate is activated. The rotation of the rudder plate drives the auxiliary plate to rotate in the opposite direction under the guidance of the sliding rod, forming a certain angle difference. This design significantly enhances the steering response of the rudder, enabling the ship to respond to steering commands more quickly and improving its maneuverability and navigation stability. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 This is a front view structural diagram of the present invention.

[0026] Figure 3 This is a top view of the structure of the present invention.

[0027] Figure 4 This is a schematic diagram of the drive mechanism structure of the present invention.

[0028] Figure 5 This is a side view of the structure of the present invention.

[0029] Figure 6 This is a schematic diagram of the rudder plate structure of the present invention.

[0030] Figure 7 This is a schematic diagram of the circulating mechanism structure of the present invention.

[0031] In the diagram: 1. Base; 2. Heat dissipation plate; 3. Drive mechanism; 301. Drive motor; 302. Linear guide rail; 303. Slider; 304. Rack; 305. Rotary seat; 306. Connecting shaft; 4. Rudder plate; 5. Auxiliary mechanism; 501. Auxiliary plate; 502. Guide shaft; 503. Slide rod; 504. Guide groove; 505. Fixing block; 6. Circulation mechanism; 601. Circulation pump; 602. Drain pipe; 603. First connecting pipe; 604. First sealing cover; 605. Rotating shaft; 606. Second connecting pipe; 607. Second sealing cover; 608. Return pipe. Detailed Implementation

[0032] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0033] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0034] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0035] Example 1:

[0036] One preferred embodiment of this application, such as Figures 1 to 7 As shown, a marine electric steering gear includes:

[0037] The base 1 is used to fix the entire electric steering gear assembly; the heat dissipation base plate 2 is located on top of the base 1 and is fixed to the top of the heat dissipation base plate 1 by bolts, and is used to dissipate heat from the electric steering gear assembly; the drive mechanism 3 is located on top of the heat dissipation base plate 2 and is connected to the heat dissipation base plate 2 by bolts, serving as the power source for the ship's electric steering gear; the rudder plate 4 is located below the base 1 and is connected to the drive mechanism 3; the auxiliary mechanism 5 is installed on one side of the rudder plate 4 to assist the rudder plate 4 in steering; and the circulation mechanism 6 is connected to the interior of both the heat dissipation base plate 2 and the rudder plate 4.

[0038] This embodiment of the ship's electric steering gear employs an electric drive system, using an electric motor as its power source. The motor converts electrical energy into rotational motion, which, through a matching transmission mechanism, is converted into the linear thrust or rotational torque required by the rudder handle. This transmission method not only improves energy conversion efficiency but also ensures the steering gear's response speed and control precision. It effectively avoids the risk of hydraulic oil leakage, improving the safety of ship navigation. Simultaneously, it simplifies the system structure and reduces installation and maintenance difficulty. The combination of the heat dissipation base plate 2 and the circulation mechanism 6 utilizes external water for heat exchange and cooling during ship navigation, improving cooling efficiency and achieving energy savings, thus meeting the environmental protection and energy efficiency requirements of modern ships. The auxiliary mechanism 5 enhances the steering response speed of the rudder plate 4, improves the ship's maneuverability, and further optimizes the ship's navigation control.

[0039] Example 2:

[0040] One preferred embodiment of this application, such as Figures 1 to 7 As shown, a marine electric steering gear includes a drive mechanism 3 comprising a drive motor 301, which is bolted to the surface of a heat sink base plate 2. The drive motor 301 is in contact with the surface of the heat sink base plate 2. The output end of the drive motor 301 is connected to a lead screw inside a linear guide rail 302, and the lead screw is threadedly connected to a slider 303. The slider 303 is slidably connected to the surface of the linear guide rail 302. A rack 304 is mounted on one side of the slider 303, and a rotating seat 305 is provided on one side of the rack 304. The rotating seat 305 has teeth on its surface, which are distributed in an arc shape with equal spacing. The rotating seat 305 meshes with the rack 304 through the teeth. The rotating seat 305 has a slot inside, and the inner wall of the slot has a notch. A connecting shaft 306 is inserted through the slot inside the rotating seat 305. The connecting shaft 306 has a protruding structure on its outer side, and the protruding structure on the outer wall of the connecting shaft 306 engages with the inner wall of the rotating table.

[0041] In this embodiment, the drive motor 301 drives the lead screw inside the linear guide 302 to rotate, which in turn drives the slider 303 to move linearly. As the slider 303 moves, it drives the rack 304 to move, and as the rack 304 moves, it drives the rotating seat 305 to move. The rotating seat 305 then drives the rudder plate 4 to rotate through the connecting shaft 306 and the rotating shaft 605, thereby adjusting the angle. The drive motor 301 converts linear motion into rotational motion, thereby driving the rudder plate 4 to turn.

[0042] Example 3:

[0043] One preferred embodiment of this application, such as Figures 1 to 7As shown, a marine electric steering gear includes an auxiliary mechanism 5 comprising an auxiliary plate 501. One side of the auxiliary plate 501 is rotatably connected to the rudder plate 4 via a shaft. The top of the auxiliary plate 501 is connected to one bottom end of a guide shaft 502. One top end of the guide shaft 502 is welded to one end of a slide rod 503. One end of the slide rod 503 is provided with a protruding structure, and the slide rod 503 is inserted into the guide groove 504. The inner wall of the guide groove 504 slides in contact with the outer wall of the slide rod 503. One top end of the guide groove 504 is rotatably connected to a fixing block 505, and the fixing block 505 is fixedly installed at the bottom of the base 1. The rudder plate 4 has a hollow internal structure and is equipped with transverse support plates inside. The transverse support plates inside the rudder plate 4 are evenly spaced from top to bottom. The surface of the transverse support plates inside the rudder plate 4 has slots, and the slots on the surfaces of adjacent transverse support plates are staggered. When the rudder plate 4 rotates, it will drive the auxiliary plate 501 to rotate. The auxiliary plate 501 can rotate in the opposite direction under the action of the sliding rod 503, thereby forming an angle between the rudder plate 4 and the auxiliary plate 501, so that the rudder plate 4 can respond to the ship's turning more quickly.

[0044] Example 4:

[0045] One preferred embodiment of this application, such as Figures 1 to 7As shown, a marine electric steering gear includes a circulation mechanism 6 comprising an inlet component and a return component. The inlet component is internally connected to a heat dissipation base plate 2, and the return component is internally connected to a steering plate 4. Both the inlet and return components are connected to a circulation pump 601. The inlet component allows the medium inside the heat dissipation base plate 2 to flow into the steering plate 4, and the return component allows the medium inside the steering plate 4 to flow back into the circulation pump 601. The circulation pump 601 is internally connected to the heat dissipation base plate 2. The inlet component includes a drain pipe 602, which is connected to the output end of the circulation pump 601, and the other end of the drain pipe 602 is internally connected to the heat dissipation base plate 2. The heat dissipation base plate 2 is connected to one end of the first connecting pipe 603, and the other end of the first connecting pipe 603 is connected to the inside of the first sealing cover 604. The first sealing cover 604 is fitted onto the outside of the rotating shaft 605. One top end of the rotating shaft 605 is connected to the connecting shaft 306, and one bottom end of the rotating shaft 605 is connected to the rudder plate 4. The inside of the first sealing cover 604 is connected to the inside of the rotating shaft 605, and the inside of the rotating shaft 605 is connected to the second connecting pipe 606, which extends into the inside of the rudder plate 4. The water return assembly includes a second sealing cover 607, which is connected to the inside of the rotating shaft 605. One end of the bottom of 605 is connected to the inside of the rudder plate 4, and the second sealing cover 607 is connected to one end of the return pipe 608, the other end of the return pipe 608 is connected to the circulation pump 601; sealing rings are provided on the inner side of the first sealing cover 604 and the contact surface with the rotating shaft 605, and both the first sealing cover 604 and the second sealing cover 607 are rotatably connected to the rotating shaft 605. The outer wall of the rotating shaft 605 is provided with two sets of annularly distributed holes and grooves, and the bottom end and the top end of the rotating shaft 605 are both independent cavities; the water heated inside the heat dissipation base plate 2 in this embodiment can pass through the first connecting pipe 603. The water enters the first sealing cover 604 and the shaft 605, and then flows through the shaft 605 to the second connecting pipe 606. The heated water then flows to the rudder plate 4. The heated water inside the rudder plate 4 allows the ship to exchange heat with the underwater water during navigation. The cooled water, under the action of the water pump, enters the second sealing cover 607 and then flows back to the heat dissipation base plate 2 through the return pipe 608 to cool the electric steering gear assembly. By using external water to cool the cooling water during the ship's operation, energy saving is achieved while improving cooling efficiency.

[0046] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A marine electric steering gear, characterized in that, include: Base (1) is used to fix the entire electric servo motor assembly; A heat dissipation base plate (2) is located on top of the base (1) and is fixed to the top of the base (1) by bolts, and is used to dissipate heat from the electric servo motor assembly. The drive mechanism (3) is located on top of the heat dissipation base plate (2) and is connected to the heat dissipation base plate (2) by bolts, serving as the power source for the ship's electric steering gear; The rudder plate (4) is located below the base (1) and is connected to the drive mechanism (3) in a transmission manner; An auxiliary mechanism (5) is installed on one side of the rudder plate (4) to assist the rudder plate (4) in steering; The circulation mechanism (6) is connected to the interior of the heat dissipation base plate (2) and the rudder plate (4), respectively; The auxiliary mechanism (5) includes an auxiliary plate (501). One side of the auxiliary plate (501) is rotatably connected to the rudder plate (4) via a shaft. The top of the auxiliary plate (501) is connected to the bottom end of the guide shaft (502). The top end of the guide shaft (502) is welded to one end of the slide rod (503). One end of the slide rod (503) is provided with a protruding structure, and the slide rod (503) is inserted into the guide groove (504). The inner wall of the guide groove (504) slides in contact with the outer wall of the slide rod (503). The top end of the guide groove (504) is rotatably connected to the fixing block (505). The fixing block (505) is fixedly installed at the bottom of the base (1).

2. The ship electric steering gear as described in claim 1, characterized in that: The driving mechanism (3) includes a driving motor (301), which is bolted to the surface of the heat dissipation base plate (2). The surface of the driving motor (301) is in contact with the surface of the heat dissipation base plate (2). The output end of the driving motor (301) is connected to the internal lead screw of the linear guide (302), and the lead screw is threaded to the slider (303). The slider (303) is slidably connected to the surface of the linear guide (302).

3. The ship electric steering gear as described in claim 2, characterized in that: A rack (304) is installed on one side of the slider (303), and a rotating seat (305) is provided on one side of the rack (304). The rotating seat (305) has teeth on its surface, and the teeth on the surface of the rotating seat (305) are distributed in an arc shape with equal spacing. The rotating seat (305) meshes with the rack (304) through the teeth. The rotating seat (305) has a slot inside, and the inner wall of the slot has a notch. A connecting shaft (306) is inserted through the slot inside the rotating seat (305). The connecting shaft (306) has a protruding structure on its outside, and the protruding structure on the outer wall of the connecting shaft (306) engages with the inner wall of the rotating seat (305).

4. The ship electric steering gear as described in claim 3, characterized in that: The rudder plate (4) has a hollow structure inside and a transverse support plate is provided inside the rudder plate (4). The transverse support plates inside the rudder plate (4) are distributed at equal intervals from top to bottom. The surface of the transverse support plate inside the rudder plate (4) is provided with holes and grooves, and the holes and grooves on the surfaces of adjacent transverse support plates are staggered.

5. A marine electric steering gear as described in claim 4, characterized in that: The circulation mechanism (6) includes an inlet component and a return component. The inlet component is internally connected to the heat dissipation base plate (2), and the return component is internally connected to the rudder plate (4). Both the return component and the inlet component are connected to the circulation pump (601). The inlet component is used for the medium inside the heat dissipation base plate (2) to flow into the rudder plate (4), and the return component is used for the medium inside the rudder plate (4) to flow back into the circulation pump (601). The circulation pump (601) is internally connected to the heat dissipation base plate (2).

6. The ship electric steering gear as described in claim 5, characterized in that: The water inlet assembly includes a drain pipe (602), which is connected to the output end of the circulation pump (601). The other end of the drain pipe (602) is connected to the interior of the heat dissipation base plate (2). The interior of the heat dissipation base plate (2) is connected to one end of the first connecting pipe (603). The other end of the first connecting pipe (603) is connected to the interior of the first sealing cover (604). The first sealing cover (604) is fitted onto the outside of the rotating shaft (605). The top end of the rotating shaft (605) is connected to the connecting shaft (306). The bottom end of the rotating shaft (605) is connected to the rudder plate (4). The interior of the first sealing cover (604) is connected to the interior of the rotating shaft (605). The interior of the rotating shaft (605) is connected to the second connecting pipe (606). The second connecting pipe (606) extends into the interior of the rudder plate (4).

7. A marine electric steering gear as described in claim 6, characterized in that: The water return assembly includes a second sealing cover (607), which is connected to the inside of the rotating shaft (605). One end of the bottom of the rotating shaft (605) is connected to the inside of the rudder plate (4). The second sealing cover (607) is connected to one end of the return pipe (608), and the other end of the return pipe (608) is connected to the circulation pump (601).

8. A marine electric steering gear as described in claim 7, characterized in that: The inner surfaces of the first sealing cover (604) and the second sealing cover (607) in contact with the rotating shaft (605) are both provided with sealing rings, and the first sealing cover (604) and the second sealing cover (607) are rotatably connected to the rotating shaft (605). The outer wall of the rotating shaft (605) is provided with two sets of annularly distributed holes and grooves, and the bottom end and the top end of the rotating shaft (605) are both independent cavities.

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