KR102656246B1 - Steering system for ship - Google Patents

Abstract

The present invention relates to a remote control steering device for a small ship that can change the direction of progress of a ship by manipulating a steering handle provided in the wheelhouse and a remote controller provided outside the wheelhouse. The remote control steering device for a small ship according to the present invention includes a steering handle and a remote control steering device. When one of the remote controllers is operated, the pump unit supplies hydraulic oil to the hydraulic actuator placed between the tiller arms of the tiller, so that the two piston rods expand and contract in the same direction, and the tiller moves to the left or left depending on the direction of expansion and contraction of the piston rods. It rotates to the right and the direction of the tiller's rudder is changed to control the ship's direction of travel.

Description

Remote control steering device for small ships {STEERING SYSTEM FOR SHIP}

The present invention relates to a remote control steering device for small ships. More specifically, when the steering handle provided in the wheelhouse and the remote controller provided outside the wheelhouse are operated, the pump unit supplies hydraulic oil to the hydraulic actuator so that the two piston rods move in the same direction. It relates to a remote control steering device for a small ship that can control the direction of progress of a ship by rotating the tiller connected to the ship's rudder left and right according to the direction of expansion and contraction of the piston rod.

In general, small and medium-sized ships and leisure boats are called outboard motors, and because they are not engine driven, the steering device cannot be operated by engine drive. Therefore, the steering system of these small and medium-sized ships is always a manual type that can be operated by a handle from the cabin (wheelhouse). For manual operation of the steering system, one person (helmsman) must reside in the wheelhouse to control the steering system.

Despite the current situation where there is a severe shortage of manpower in fishing villages, the above-mentioned steering device is used, resulting in the loss of one person during fishing. In other words, when fishermen perform fishing work on a fishing boat, one of the workers must always be in the wheelhouse adjusting the steering device.

Therefore, as part of the fishing equipment and fishing boat automation system, a remote control steering device for ships was developed that allows the steering device to be adjusted in places other than the wheelhouse, as shown in Figure 1, to address the labor shortage in fishing villages and ensure the safety of fishermen.

In the case of the remote control steering device of the ship's steering device according to the prior art, when the ship is sailing, the direction of the ship is controlled by operating the hydraulic actuator (2) by manipulating the steering handle (110) provided in the wheelhouse, and upon arrival at the fishing ground, During fishing operations, the direction of the ship could be controlled left and right by using the remote controller (4) to remotely operate the hydraulic actuator (2) regardless of the steering handle (110).

However, in the case of the remote control steering device for ships according to the prior art, a one-way pump (5) is used, so in order to operate the hydraulic actuator (2) consisting of a pair of cylinders, an oil pump, which is a one-way pump, as well as a direction change valve (solenoid valve) are used. ) had to be provided as a necessity, and because they were arranged sporadically, there was a problem in that the overall configuration of the steering device was complicated, the weight increased, and the price was expensive.

In addition, the conventional remote control steering device for ships is configured to rotate the rudder using two hydraulic cylinders, so the hydraulic cylinders take up a lot of installation space and the structure is complicated, which imposes restrictions on installation and increases the rate of failure. There is also the problem that a lot of cost and effort is required for maintenance and replacement due to the high number of parts.

Republic of Korea Patent No. 10-1205843 (registered on November 22, 2012) Republic of Korea Patent No. 10-1609195 (registered on March 30, 2016) Republic of Korea Patent No. 10-0859332 (registered on September 12, 2008) Republic of Korea Patent No. 10-1126959 (registered on March 7, 2012)

The present invention has been proposed to solve the above-described conventional problems. The purpose of the present invention is to provide a pump unit that has a complex configuration using an oil pump, a direction change valve, and an oil tank that were sporadically arranged to operate a hydraulic actuator. The main goal is to provide a remote control steering device for small ships that is simple and lightweight so that it can be easily installed on existing small ships at low cost.

Another object of the present invention is to provide a remote control steering device for small ships that simplifies the configuration, reduces the number of parts, is easy to maintain and replace, and increases controllability.

In order to achieve the above object, a remote control steering device for a small ship according to one form of the present invention includes a tiller to which the rudder of the ship is connected and installed to rotate around a rotation axis extending in a direction perpendicular to the hull; a hydraulic actuator that rotates the tiller in one direction using hydraulic oil supplied from a pump unit; An oil tank in which hydraulic oil is stored, a DC motor that rotates in one direction and generates a rotational force to pump the hydraulic oil in the oil tank, and a first pumping port and a second pump that discharge the hydraulic oil pumped by the DC motor to the hydraulic actuator. A pump unit including a port and a 4-port/3-way electrically controlled solenoid valve that switches the direction of hydraulic fluid pumped by one-way driving of the DC motor to the first pumping port or the second pumping port; A control module that applies power to the DC motor of the pump unit to rotate the DC motor in one direction and switches the flow path by applying a control signal to the solenoid valve; A steering handle installed in the ship's wheelhouse and operated by a person in the wheelhouse, electrically connected to the control module, and operating the DC motor and solenoid valve of the pump unit through the control module by operation by a person in the wheelhouse; And, a remote controller electrically connected to the control module and installed outside the wheelhouse to operate the DC motor and solenoid valve of the pump unit by manipulation by a person outside the wheelhouse.

The hydraulic actuator includes a first cylinder connected to the first pumping port of the pump unit to receive operating oil and extend the piston, and a second cylinder connected to the second pumping port of the pump unit to receive operating oil to extend the piston. It includes a cylinder, and the piston of the first cylinder and the piston of the second cylinder are connected to both ends of the tiller.

Or, the hydraulic actuator is connected to a hydraulic chamber that accommodates the hydraulic oil supplied from the pump unit, and a first hydraulic line and a second hydraulic line that communicate with both sides of the hydraulic chamber and are connected to the pump unit that supplies the hydraulic oil. A cylinder having a first port and a second port, and one of two axial directions of the hydraulic chamber by the hydraulic pressure of the hydraulic oil flowing into the hydraulic chamber of the cylinder through one of the first port and the second port. A piston disk that slides is formed to extend in opposite directions on both sides of the piston disk and protrudes outward from both ends of the cylinder, and each outer end contacts both sides of the tiller and slides in the same direction as the tiller. It is characterized in that it includes two pairs of piston rods that rotate around the rotation axis.

Here, the tiller includes a tiller body to which the rotation axis is connected, and two tiller arms extending in a horizontal direction with respect to the ground at both ends of the tiller body to form a space in which the hydraulic actuator is installed, The piston rod of the hydraulic actuator may slide while being connected to each of the tiller arms.

In addition, the inner surface of the tiller arm is made of a curved surface with a curvature corresponding to the rotation trajectory of the tiller centered on the rotation axis, and the end of the piston rod of the hydraulic actuator has a rolling motion along the inner surface of the tiller arm. The roller can be installed to rotate freely.

On the inner surface of the tiller arm, a stopper that contacts the end of the piston rod and limits the rotation angle of the tiller may be formed to protrude inward.

A remote control steering device for a small ship according to another form of the present invention includes a tiller body installed to rotate around a rotation axis to which the rudder of the ship is connected and extending in a direction perpendicular to the hull, and horizontal steering wheels at both ends of the tiller body. A tiller including two tiller arms that extend well and have an inner surface curved with a curvature corresponding to the rotation trajectory of the tiller; A first port and a second port respectively connected to a hydraulic chamber that receives the hydraulic oil supplied from the pump unit, and a first hydraulic line and a second hydraulic line that communicate with both sides of the hydraulic chamber and are connected to the pump unit that supplies the hydraulic oil. A cylinder provided with a piston disk that slides in one of two axial directions of the hydraulic chamber by the hydraulic pressure of hydraulic oil flowing into the hydraulic chamber of the cylinder through one of the first port and the second port, The piston disc is formed to extend in opposite directions on both sides and protrudes outward from both ends of the cylinder, and each outer end contacts both inner surfaces of the tiller arm and slides in the same direction to one of the tiller arms. A hydraulic actuator including two pairs of piston rods that rotate the tiller about the rotation axis by applying an external force; An oil tank in which hydraulic oil is stored, a DC motor that rotates in one direction and generates a rotational force to pump the hydraulic oil in the oil tank, and the hydraulic oil pumped by the DC motor is discharged to the first and second ports of the hydraulic actuator, respectively. a first pumping port and a second pumping port, and a 4-port/3-way electrically controlled solenoid valve that switches the direction of the hydraulic oil pumped by one-way driving of the DC motor to the first pumping port or the second pumping port. A pump unit including; A control module that applies power to the DC motor of the pump unit to rotate the DC motor in one direction and switches the flow path by applying a control signal to the solenoid valve; A steering handle installed in the ship's wheelhouse and operated by a person in the wheelhouse, electrically connected to the control module, and operating the DC motor and solenoid valve of the pump unit through the control module by operation by a person in the wheelhouse; And, a remote controller electrically connected to the control module and installed outside the wheelhouse to operate the DC motor and solenoid valve of the pump unit by manipulation by a person outside the wheelhouse.

The remote control steering device for small ships according to the present invention forms a single pump unit by simplifying and lightweighting the complex configuration of the oil pump, direction change valve, and oil tank, which were sporadically arranged to operate the hydraulic actuator, centered on the pump unit. This has the advantage of being able to be easily installed on existing small ships at low cost.

In addition, the present invention can reduce power unnecessarily wasted on the DC motor by blocking the power applied to the DC motor when the left and right switches of the remote controller are not pressed.

In addition, a hydraulic actuator that allows two pairs of piston rods to slide in the same direction at the same time is installed in the space between the two tiller arms formed to face each other on the tiller, and the two piston rods configured in the hydraulic actuator are moved by hydraulic pressure. The direction is adjusted by rotating the tiller to the left or right by pushing the tiller arm of the tiller while moving in the same direction, so the overall configuration can be greatly simplified, and a large driving force can be generated with a small force.

Therefore, the overall configuration can be simplified to reduce the number of parts, maintenance and replacement are easy, and control power can be increased.

Additionally, since the hydraulic actuator is accommodated and installed inside the tiller, it can be installed in a small installation space.

Figure 1 is a configuration diagram for explaining a remote control steering device for hydraulic steering according to the prior art.
Figure 2 is a configuration diagram for explaining the configuration of a remote control steering device for hydraulic steering for a ship according to the first embodiment of the present invention.
Figure 3 is a perspective view of a pump unit constituting a remote control steering device for hydraulic steering for ships according to the present invention.
Figure 4 is a circuit diagram of a pump unit constituting a remote control steering device for hydraulic steering for ships according to the present invention.
Figure 5 is a configuration diagram for explaining the configuration of a remote control steering device for hydraulic steering for ships according to the second embodiment of the present invention.
Figures 6a to 6c are plan views showing examples of operation of the tiller and hydraulic actuator constituting the remote control steering device for hydraulic steering for ships shown in Figure 5.
Figure 7 is a cross-sectional view of a hydraulic actuator constituting the remote control steering device for hydraulic steering for a ship shown in Figure 5.

A remote control steering device for hydraulic steering for ships according to embodiments of the present invention will be described in detail with reference to the attached drawings. Since the present invention can be subject to various changes and can have various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention. While describing each drawing, similar reference numerals are used for similar components. In the attached drawings, the dimensions of the structures are enlarged from the actual size for clarity of the present invention, or reduced from the actual size to understand the schematic configuration.

Additionally, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, a first component may be named a second component, and similarly, the second component may also be named a first component without departing from the scope of the present invention. Meanwhile, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

Referring to Figures 2 to 4, the remote control steering device for hydraulic steering for ships according to an embodiment of the present invention includes a steering handle 110, a hydraulic actuator 120, a tiller 121, and a pump unit 130. , a control module 140, a remote controller 150, etc.

The remote control steering device according to an embodiment of the present invention includes an oil tank 132, a DC motor 131 that pumps fluid (oil) in the oil tank 132 while operating in one direction, and operation of the DC motor 131. A pump unit 130 is formed by integrating the solenoid valve 135, which changes the direction of the fluid pumped by the pump, and the first pumping port 133a and the second pumping port 133b, which discharge the fluid through the solenoid valve 135. was formed to have a more concise structure.

Hereinafter, the remote control steering device according to an embodiment of the present invention will be described in more detail, focusing on each of the above components.

The steering handle 110 is installed in the wheelhouse of a ship, and when a user is located in the wheelhouse, the direction of movement of the ship can be controlled by directly rotating the steering handle 110 without manipulating the remote controller 150. Here, the steering handle 110 is electrically connected to the control module 140, which controls the operation of the pump unit 130, and operates the hydraulic actuator 120 according to the rotation direction of the steering handle 110, thereby operating the ship's rudder and The direction of travel can be changed by rotating the connected tiller 121.

In this embodiment, the hydraulic actuator 120 includes a first cylinder 120a and a second cylinder 120b, each operated by hydraulic pressure, and the pistons of the first cylinder 120a and the second cylinder 120b advance and retreat. As the tiller 121 rotates, the rudder of the ship rotates.

The pump unit 130 is for operating the hydraulic actuator 220 by supplying hydraulic oil, and the DC motor 131 is a pump equipped with a first pumping port (133a) and a second pumping port (133b) at the upper end. The block 133 is installed in the middle and the oil tank 132 is installed at the bottom to form an integrated block. Here, the first pumping port (133a) and the second pumping port (133b) are respectively connected to the first cylinder (120a) and the second cylinder (120b) of the hydraulic actuator 120 to drive the DC motor (131). Hydraulic oil is supplied to either the first cylinder 120a or the second cylinder 120b of the hydraulic actuator 120.

The pump block 133 is equipped with a solenoid valve 135 that changes the direction of the hydraulic oil pumped by the one-way drive of the DC motor 131 and pumps it to the first pumping port (133a) or the second pumping port (133b). do. The solenoid valve 135 is configured to switch the flow path to the first pumping port (133a) or the second pumping port (133b) through 4-port/3-way electrical control.

Meanwhile, pressure sensors 134a and 134b may be installed in the first pumping port 133a and the second pumping port 133b of the pump unit 130, respectively. The pressure sensors (134a, 134b) detect the fluid pressure of the oil burdened on the first pumping port (133a) and the second pumping port (133b) and control when the limit steering angle is reached and the oil pressure is applied above a certain level. This is notified to the module 140. Then, the control module 140 immediately cuts off the power applied to the DC motor 131 to stop driving the DC motor 131.

The control module 140 is installed between the pump unit 130 and the remote controller 150, and includes the role of applying or blocking power to the DC motor 131, the steering wheel 110, and the remote controller. It is electrically connected to (150) and controls the DC motor (131) according to electrical signals generated by operation of the steering wheel (110) and remote controller (150). Here, the control module 140 does not always apply power to the DC motor 131 to operate, but turns on the DC motor 131 at the same time that the left and right switches installed on the remote controller 150 are pressed. Follow the method of applying power. As a result, electricity consumption can be reduced.

The remote controller 150 is connected to the DC motor 131 of the pump unit via the control module 140 and serves to operate the pump unit. That is, the remote controller 150 is electrically connected to the control module 140 and is manufactured in a simple form including a left switch 151a and a right switch 151b as can be seen in the drawing. And, when either the left switch 151a or the right switch 151b is pressed, power is applied to the DC motor 131 and driven, and the left switch 151a and the right switch 151b are turned on. In a non-pressed state, a control signal is sent so that the power applied to the DC motor 131 is cut off. In this way, if the configuration of the remote controller 150 is very simple, the user on the ship can control the direction of the ship without making a mistake even during fishing operations, and power that is unnecessarily wasted on the DC motor 131 can be reduced.

For reference, Figure 2 shows an engine control lever 180 for controlling the ship's engine 170, which includes a clutch lever 181 that is responsible for shifting the ship's gear and the speed of the ship by controlling the RPM of the engine. A speed lever 182 that controls is included.

The remote control steering device having the same configuration as described above operates as follows.

When the ship's operator rotates the steering wheel 110 in the wheelhouse or presses the left switch 151a and right switch 151b of the remote controller 150, a manipulation signal is transmitted to the control module 140. The control module 140 applies a control signal to the DC motor 131 to rotate the DC motor 131 in one direction to pump the oil in the oil tank 132.

At this time, the control module 140 sends a control signal to the solenoid valve 135 according to the operating direction of the steering wheel 110 or by pressing the left switch 151a or right switch 151b of the remote controller 150. Convert to euro by authorizing .

The oil that has passed through the solenoid valve 135 is supplied to the first cylinder 120a or the second cylinder 120b of the hydraulic actuator 120 through the first pump port 133a or the second pump port 133b. By extending the piston of the first cylinder (120a) or the piston of the second cylinder (120b) to rotate the tiller (121) in one direction, the rudder of the ship is rotated to change the ship's direction of travel.

Figures 5 to 7 show a remote control steering device for hydraulic steering for a ship according to another embodiment of the present invention.

The remote control steering device for hydraulic steering for ships of this embodiment differs from the above-described embodiment in the configuration and operation of the tiller 210 and the hydraulic actuator 220.

In this embodiment, the tiller 210 is installed to be rotatable in both directions about a rotation axis 215 extending in a vertical direction at the rear of the ship's hull. The tiller 210 is formed to extend in a direction horizontal to the ground at both ends of the tiller body 211 and the tiller body 211 to which the rotation axis 215 is connected, so that the hydraulic actuator 220 It includes two tiller arms 212 that form an installation space.

The tiller body 211 is coupled to the rudder of the ship, and when the tiller body 211 rotates, the rudder rotates and the ship's direction of travel changes. The rotation axis 215 may be connected to the tiller body 211 at a position eccentric at a certain distance from the geometric center of the tiller 210 including the entire tiller body 211 and the tiller arm 212.

The tiller arm 212 is formed to extend curvedly in both directions from the portion where the rotation axis 215 is disposed, and a hydraulic actuator 220 is installed between the two tiller arms 212. In order to allow the tiller arm 212 to rotate smoothly in conjunction with the piston rod 223 when the piston rod 223 of the hydraulic actuator 220 is expanded, the inner surface 212a of the tiller arm 212 is It is made of a curved surface with a curvature corresponding to the rotation trajectory of the tiller 210. At each end of the tiller arm 212, a stopper 213 that contacts the end of the piston rod 223 of the hydraulic actuator 220 and limits the rotation angle of the tiller 210 is formed to protrude inward.

As in this embodiment, the tiller arm 212 has both an inner surface 212a and an outer surface curved, but differently, it may have a shape in which at least the inner surface is curved and the outer surface is straight.

The hydraulic actuator 220 is installed between the tiller arms 212 of the tiller 210 and rotates the tiller 210 to rotate the rudder of the ship to change the ship's direction of travel. It operates in connection with the pump unit. Referring to FIG. 7, the hydraulic actuator 220 includes a cylinder 221 fixed in the space between the tiller arms 212, and a piston disk 222 installed to slide by hydraulic pressure inside the cylinder 221. , It includes two piston rods 223 that are fixed to both sides of the piston disk 222 and move together.

The cylinder 221 is fixedly installed at the rear of the hull. The cylinder 221 communicates with a hydraulic chamber 221a that accommodates the hydraulic oil supplied from the pump unit and both sides of the hydraulic chamber 221a, and a first hydraulic line 201 connected to the pump unit of the pump unit 130. ) and a first port (221b) and a second port (221c) respectively connected to the second hydraulic line 202. The piston disk 222 is disposed between the first port 221b and the second port 221c in the hydraulic chamber 221a and has a disk shape with a diameter almost the same as that of the hydraulic chamber 221a, It slides in the axial direction of the hydraulic chamber 221a by the hydraulic oil supplied into the hydraulic chamber 221a through the first port 221b and the second port 221c. That is, when hydraulic pressure is supplied to either the first port (221b) or the second port (221c) of the cylinder 221, the piston disk 222 is pushed by the hydraulic pressure and moves in one of the two axial directions of the cylinder 221. It moves in the axial direction.

The hydraulic actuator 220 is provided with two piston rods 223. The inner ends of each piston rod 223 are connected to the centers of both sides of the piston disk 222, and the outer ends are connected to one end of the cylinder 221. It extends outward through the portion and connects to the inner surface 212a of the tiller arm 212 of the tiller 210.

The piston rod 223 may have the shape of a polygonal bar, such as a circular bar or a square, with a thickness or diameter substantially equal to or slightly smaller than the inner surface 212a of the tiller arm 212, and the outer end of the piston rod 223 While moving relative to the inner surface 212a of the tiller arm 212, an external force is applied to the tiller arm 212. At this time, the outer end of the piston rod 223 can move relative to each other smoothly while generating less friction between the inner surfaces 212a of the tiller arm 212, and a roller is attached to the outer end of the piston rod 223 to minimize wear. (224) is installed to rotate freely and rolls along the inner surface (212a) of the tiller arm (212).

The pump unit 130 is for operating the hydraulic actuator 220 by supplying hydraulic oil. As in the above-described embodiment, a one-way DC motor 131 is installed at the upper part, and the first pump port 133a and the second pump are connected to the hydraulic actuator 220. The pump block 133 with the port 133b is installed in the middle and the oil tank 132 is installed at the bottom to form an integrated structure.

In addition, the pump block 133 of the pump unit 130 changes the direction of the hydraulic oil pumped by the one-way drive of the DC motor 131 and pumps it to the first pumping port (133a) or the second pumping port (133b). A solenoid valve 135 is installed. The solenoid valve 135 is configured to switch the flow path to the first pumping port (133a) or the second pumping port (133b) through 4-port/3-way electrical control.

The first pump port (133a) and the second pump port (133b) are connected to the first port (221b) and the second port (221c) of the hydraulic actuator 220 to drive the DC motor 131. Hydraulic oil is supplied to one side of the hydraulic chamber 221a of the hydraulic actuator 220 through one of the first port 221b and the second port 221c of the hydraulic actuator 220, and rotation of the DC motor 131 If the direction is reversed, the supply direction changes and hydraulic oil is recovered. For example, when the rotation direction of the DC motor 131 is forward, hydraulic oil is sent from the first pump port (133a) and supplied through the first port (221b) of the hydraulic actuator 220 to operate the piston rod ( 223) is stretched in one direction. Conversely, when the rotation direction of the DC motor 131 is reverse, the hydraulic oil delivered from the first pump port (133a) is recovered, and the second pump port (133b) supplies hydraulic oil to the second port (221c). Thus, the piston rod 223 is extended in one direction on the opposite side.

The control module 140 is installed between the pump unit 130 and the remote controller 150, and includes the role of applying or blocking power to the DC motor 131, including the steering wheel 110 and the remote controller 150. ) is electrically connected to the DC motor 131 according to the electrical signal generated by the operation of the steering wheel 110 and the remote controller 150.

The remote controller 150 is connected to the DC motor 131 of the pump unit via the control module 140 and serves to operate the pump unit.

The remote control steering device of the second embodiment having the same configuration as described above operates as follows.

When the ship's operator rotates the steering wheel 110 in the wheelhouse or presses the left switch 151a and right switch 151b of the remote controller 150, a manipulation signal is transmitted to the control module 140. The control module 140 applies a control signal to the DC motor 131 to rotate the DC motor 131 in one direction to pump the oil in the oil tank 132.

At this time, the control module 140 sends a control signal to the solenoid valve 135 according to the operating direction of the steering wheel 110 or by pressing the left switch 151a or right switch 151b of the remote controller 150. Convert to euro by authorizing .

The oil that has passed through the solenoid valve 135 is pumped through the first pump port (133a) or the second pump port (133b) to the first port (221b) or second port (221c) of the cylinder 221 of the hydraulic actuator 220. ) The hydraulic oil flows into the cylinder 221 through. Accordingly, the piston disk 222 inside the cylinder 221 slides in one direction by hydraulic pressure. At this time, the piston disk 222 and the two piston rods 223 coupled thereto move to the left or right together.

Among the two piston rods 223, the piston rod 223 moving in the direction extending relative to the cylinder 221 pushes the inner surface 212a of the tiller arm 212 and applies force to the tiller arm 212. do. Accordingly, the tiller 210 rotates by a certain amount around the rotation axis 215 (see FIGS. 6A to 6C). The rotation angle of the tiller 210 is measured by the rudder angle sensor 40, and the rudder angle is displayed through a rudder angle indicator (not shown) installed in the wheelhouse.

When the tiller 210 rotates around the rotation axis 215 by the action of the piston rod 223, the roller 224 installed on the outer end of the piston rod 223 is a stopper formed at the end of the tiller arm 212. The rotation angle may be limited by hitting (213). The rotation angle of the tiller 210 may be limited to approximately 35°, but may be changed variously as needed.

The steering device of the above-described embodiment includes a hydraulic actuator 220 that allows two piston rods 223 to slide simultaneously on both sides of the cylinder 221, and two tiller arms 212 formed to face each other on the tiller 210. ) is installed in the space between the hydraulic actuators 220, and as the piston rod 223 of the hydraulic actuator 220 moves, it pushes either tiller arm 212 on both sides of the tiller 210 to rotate the tiller 210, greatly reducing the overall configuration. It can be simplified and provides the advantage of generating a large driving force with a small force.

Although the preferred embodiments of the present invention have been described above, various changes, modifications, and equivalents may be used in the present invention. It is clear that the present invention can be equally applied by appropriately modifying the above embodiment. Accordingly, the above description does not limit the scope of the present invention, which is defined by the limitations of the claims below.

110: Steering handle 120: Hydraulic actuator
120a: first cylinder 120b: second cylinder
121: tiller 130: pump unit
131: DC motor 132: Oil tank
133: Pump block 133a: First pumping port
133b: second pumping port 134a, 134b: pressure sensor
135: solenoid valve 140: control module
150: remote controller 210: tiller
211: Tiller body 212: Tiller arm
213: stopper 215: rotation axis
220: hydraulic actuator 221: cylinder
221a: hydraulic chamber 221b: first port
221c: second port 222: movable disk
223: Piston 224: Roller
230: Steering angle sensor

Claims (7)

A tiller to which the ship's rudder is connected and which is installed to rotate around a rotation axis extending in a direction perpendicular to the hull;
a hydraulic actuator that rotates the tiller in one direction using hydraulic oil supplied from a pump unit;
An oil tank in which hydraulic oil is stored, a DC motor that rotates in one direction and generates a rotational force to pump the hydraulic oil in the oil tank, and a first pumping port and a second pump that discharge the hydraulic oil pumped by the DC motor to the hydraulic actuator. A pump unit including a port and a 4-port/3-way electrically controlled solenoid valve that switches the direction of hydraulic fluid pumped by one-way driving of the DC motor to the first pumping port or the second pumping port;
A control module that applies power to the DC motor of the pump unit to rotate the DC motor in one direction and switches the flow path by applying a control signal to the solenoid valve;
A steering handle installed in the ship's wheelhouse and operated by a person in the wheelhouse, electrically connected to the control module, and operating the DC motor and solenoid valve of the pump unit through the control module by operation by a person in the wheelhouse; and,
A remote controller electrically connected to the control module and installed outside the wheelhouse to operate the DC motor and solenoid valve of the pump unit by manipulation by a person outside the wheelhouse;
Including,
The hydraulic actuator is a hydraulic chamber that accommodates the hydraulic oil supplied from the pump unit, and a first hydraulic line and a second hydraulic line that communicate with both sides of the hydraulic chamber and are connected to the pump unit that supplies the hydraulic oil, respectively. A cylinder having a first port and a second port, and hydraulic oil flowing into the hydraulic chamber of the cylinder through one of the first port and the second port in one of the two axial directions of the hydraulic chamber. A sliding piston disk is formed to extend in opposite directions on both sides of the piston disk and protrudes outward from both ends of the cylinder, and each outer end contacts both sides of the tiller to move the tiller while sliding in the same direction. A remote control steering device for a small ship, comprising two pairs of piston rods rotating about the rotation axis. delete delete The method of claim 1, wherein the tiller includes a tiller body to which the rotation axis is connected, and two tillers extending in a horizontal direction with respect to the ground at both ends of the tiller body to form a space in which the hydraulic actuator is installed. A remote control steering device for a small ship that includes an arm, and the piston rod of the hydraulic actuator slides while being connected to each of the tiller arms. The method of claim 4, wherein the inner surface of the tiller arm is made of a curved surface having a curvature corresponding to the rotational trajectory of the tiller centered on the rotation axis, and the inner surface of the tiller arm is at an end of the piston rod of the hydraulic actuator. A remote control steering device for small ships with freely rotating rollers that roll along the surface. The remote control steering device for a small ship according to claim 4, wherein a stopper that contacts the end of the piston rod and limits the rotation angle of the tiller is formed on the inner surface of the tiller arm to protrude inward. A tiller body connected to the ship's rudder and installed to rotate around a rotation axis extending in a direction perpendicular to the hull, and extending horizontally at both ends of the tiller body, the inner surface of which is curved with a curvature corresponding to the rotation trajectory of the tiller. A tiller including two tiller arms with curved surfaces;
A first port and a second port respectively connected to a hydraulic chamber that receives the hydraulic oil supplied from the pump unit, and a first hydraulic line and a second hydraulic line that communicate with both sides of the hydraulic chamber and are connected to the pump unit that supplies the hydraulic oil. A cylinder provided with a piston disk that slides in one of two axial directions of the hydraulic chamber by the hydraulic pressure of hydraulic oil flowing into the hydraulic chamber of the cylinder through one of the first port and the second port, The piston disc is formed to extend in opposite directions on both sides and protrudes outward from both ends of the cylinder, and each outer end contacts both inner surfaces of the tiller arm and slides in the same direction to one of the tiller arms. A hydraulic actuator including two pairs of piston rods that rotate the tiller about the rotation axis by applying an external force;
An oil tank in which hydraulic oil is stored, a DC motor that rotates in one direction and generates a rotational force to pump the hydraulic oil in the oil tank, and the hydraulic oil pumped by the DC motor is discharged to the first and second ports of the hydraulic actuator, respectively. a first pumping port and a second pumping port, and a 4-port/3-way electrically controlled solenoid valve that switches the direction of the hydraulic oil pumped by one-way driving of the DC motor to the first pumping port or the second pumping port. A pump unit including;
A control module that applies power to the DC motor of the pump unit to rotate the DC motor in one direction and switches the flow path by applying a control signal to the solenoid valve;
A steering handle installed in the ship's wheelhouse and operated by a person in the wheelhouse, electrically connected to the control module, and operating the DC motor and solenoid valve of the pump unit through the control module by operation by a person in the wheelhouse; and,
A remote controller electrically connected to the control module and installed outside the wheelhouse to operate the DC motor and solenoid valve of the pump unit by manipulation by a person outside the wheelhouse;
A remote control steering device for small ships including.

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