KR102357882B1 - Rudder Driving System for Small Ship - Google Patents

Abstract

The present invention relates to a hydraulic rudder control apparatus for a small ship, which is able to extend/contract two pistons in both directions by a hydraulic pressure supplied into a cylinder, rotate a rudder of the ship to both sides, control the moving direction of the ship, reduce the whole installation space, and simplify components. According to the present invention, the hydraulic rudder control apparatus for the small ship comprises: a tiller connected to the rudder of the ship, and installed to rotate around a rotary shaft extended in a direction vertical to the hull; and a hydraulic actuator including a cylinder having a hydraulic chamber accommodating a working fluid supplied from outside, and two ports communicating with both side units of the hydraulic chamber and connected to an outer hydraulic pressure supply apparatus, an operation disc sliding in an axial direction of the hydraulic chamber by the hydraulic pressure introduced into the hydraulic chamber of the cylinder through the ports, and two pistons installed on both side surfaces of the operation disc to be extended toward an outer side of both end units of the cylinder, and having an outer end unit connected to both end units of the tiller, and sliding in the same direction as that of each other, and rotating the tiller around the rotary shaft.

Description

Hydraulic rudder control system for small ships

The present invention relates to a rudder control device for a ship, and more particularly, to a small size capable of controlling a ship's moving direction by rotating the ship's rudder left and right while two pistons expand and contract in both directions by hydraulic pressure supplied to the inside of a cylinder It relates to a hydraulic rudder control device for a ship.

In general, a steering device used in a ship is a device that can change or maintain the moving direction of a ship by adjusting the angle of a rudder mounted on a stern, etc., and has a great influence on the turning ability of the ship.

Steering devices commonly employed in small ships include, for example, a manual hydraulic helm steering device for manually operating a helm pump to drive a stern steering cylinder or rudder kit connected to the helm pump through a hydraulic hose, and a ship engine as a power source There is a hydraulic power steering device configured to control the hydraulic pressure generated by the stern and transmit it to a steering cylinder or steering gear at the stern to control the direction of a rudder connected thereto.

Republic of Korea Patent No. 10-0859332 discloses that the hydraulic circuit of a multi-stage hydraulic supply structure is combined with the dual ram part and the cylinder part to generate different operating forces and speeds for each turning angle section, so that the turning speed of the rudder is relatively in the main turning angle section. Disclosed is a hydraulic steering device having a multi-stage hydraulic supply structure capable of increasing the

In addition, Republic of Korea Patent Registration No. 10-1126959 discloses a ram shaft driven reciprocally, an engaging means engageable with the ram shaft, and a rotary drive mechanism connected to the engaging means to convert the reciprocating motion of the ram shaft into a rotational motion to rotate the steering wheel. A steering gear equipped with a steering gear is disclosed.

However, in this conventional hydraulic steering device, one piston (also referred to as a 'ram') reciprocates between two cylinders, and the central part of the piston is connected to the tiller connected to the rudder and rotates the tiller in a certain angle range to rotate the rudder. Because it is configured to rotate (rudder), there is a lot of installation space occupied by cylinders and pistons and there are restrictions on installation, and the composition is complicated and the failure rate is high. there is a problem with In particular, this is becoming a more serious problem in the recent trend of aging of ship workers.

Republic of Korea Patent No. 10-0859332 (Registered on September 12, 2008) Republic of Korea Patent Registration No. 10-1126959 (Registered on March 7, 2012)

The present invention is to solve the above problems, and an object of the present invention is to provide a hydraulic rudder control device for a small ship that can simplify the configuration and reduce the number of parts, facilitate maintenance and replacement, and increase control power. is in

A hydraulic rudder control apparatus for a small ship according to the present invention for achieving the above object includes: a tiller to which a rudder of a ship is connected, and installed to rotate about a rotational shaft extending in a direction perpendicular to a hull; And, a hydraulic chamber for accommodating the hydraulic oil supplied from the outside, a cylinder communicating with both sides of the hydraulic chamber and having two ports connected to an external hydraulic supply device, and through the port inside the hydraulic chamber of the cylinder A movable disk sliding in the axial direction of the hydraulic chamber by the incoming hydraulic pressure, is installed on both sides of the movable disk to extend outwardly from both ends of the cylinder, and each of the outer ends is connected to both sides of the tiller in the same direction and a hydraulic actuator including two pistons for rotating the tiller about the rotation shaft while sliding.

The tiller includes a tiller body to which the rotating shaft is connected, and two coupling arms formed at both ends of the tiller body to extend in a horizontal direction with respect to the ground to form a space in which the hydraulic actuator is installed. and a piston of the hydraulic actuator may be connected to each of the coupling arms.

The cylinder of the hydraulic actuator may be installed to be fixed to the hull.

The inner surface of the coupling arm is formed of a curved surface having a curvature corresponding to the rotation trajectory of the tiller about the rotation shaft, and the end of the piston of the hydraulic actuator is in contact with the curved surface of the coupling arm. It may be connected to slide along a curved surface.

In this case, it is preferable that the end of the piston is curved.

A stopper for limiting the rotation angle of the tiller while in contact with the end of the piston may be formed to protrude inwardly from the inner surface of the coupling arm.

The cylinder of the hydraulic actuator is rotatably connected to a cylinder rotation shaft installed perpendicular to the hull, and the outer end of each piston may be rotatably connected to both sides of the tiller via a hinge pin.

A hydraulic rudder control device for a small ship according to another aspect of the present invention includes: a rotating shaft extending in a direction perpendicular to a hull; A tiller body connected to the rotating shaft, rotating in both directions about the rotating shaft, and to which the rudder of the ship is connected, is formed at both ends of the tiller body to extend in a horizontal direction with respect to the ground, and the inner surface has a constant curvature Tiller including two coupling arms made of a curved surface; And, two pistons installed between the coupling arms of the tiller and connected to each coupling arm slide in the same direction by hydraulic pressure while pushing the coupling arm to move the tiller body around the rotation axis. It may include a; hydraulic actuator for rotating in the direction.

A stopper for limiting the rotation angle of the tiller while in contact with the outer end of the piston may be formed to protrude inward from the inner surface of the coupling arm.

The hydraulic actuator includes a hydraulic chamber accommodating hydraulic oil supplied from the outside, a cylinder having two ports communicating with both sides of the hydraulic chamber and connected to an external hydraulic pressure supply device, and the hydraulic chamber of the cylinder. A movable disk sliding in the axial direction of the hydraulic chamber by hydraulic pressure flowing in through the port is installed on both sides of the movable disk to extend outwardly from both ends of the cylinder, and each of the outer ends is connected to both sides of the tiller to each other It may include two pistons for rotating the tiller about the rotation shaft while sliding in the same direction.

According to the present invention, a hydraulic actuator configured to cause two pistons to slide in the same direction at the same time from both sides of the cylinder is installed in the space between two coupling arms formed substantially parallel to the tiller, and the piston of the hydraulic actuator moves by hydraulic pressure. Since the tiller is rotated by pushing the coupling arm of the tiller, the overall configuration can be greatly simplified, and a large driving force can be generated with a small force.

Accordingly, it is possible to reduce the number of parts by simplifying the overall configuration, to facilitate maintenance and replacement, and to increase control.

In addition, since the hydraulic actuator is accommodated and installed inside the tiller, there is an effect that the rudder control device can be installed with a small installation space.

1 is a perspective view showing a hydraulic rudder control device for a small ship according to an embodiment of the present invention.
2 is a cross-sectional view showing an embodiment of a hydraulic actuator of a hydraulic rudder control device according to the present invention.
3A to 3C are plan views illustrating an operation example of the hydraulic rudder control device of FIG. 1 .
4 is a perspective view illustrating a modified example of the hydraulic rudder control device shown in FIG. 1 .
5 is a perspective view showing a hydraulic rudder control device for a small ship according to another embodiment of the present invention.
6 is a plan view illustrating an operation example of the rudder control device shown in FIG. 5 .
7 is a perspective view showing a hydraulic rudder control device for a small ship according to another embodiment of the present invention.
8 is a plan view illustrating an operation example of the rudder control device shown in FIG. 7 .

A hydraulic rudder control device for a small vessel according to embodiments of the present invention will be described in detail with reference to the accompanying drawings. Since the present invention can have various changes and can have various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention. In describing each figure, like reference numerals have been used for like elements. In the accompanying drawings, the dimensions of the structures are enlarged than actual for clarity of the present invention, or reduced than actual in order to understand the schematic configuration.

Also, terms such as first and second may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component. Meanwhile, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

1 to 3c show a hydraulic rudder control device for a small ship according to the present invention, a tiller 10 to which the rudder of a ship is connected, and a tiller 10 connected to both sides of the tiller 10 to rotate the tiller 10 ( 15) and includes a hydraulic actuator 20 for rotating in both directions.

The tiller 10 is rotatably installed in both directions about a rotation shaft 15 extending in a direction perpendicular to the rear of the hull of the ship. The tiller 10 is formed to extend in a horizontal direction with respect to the ground at both ends of the tiller body 11 to which the rotation shaft 15 is connected, and the hydraulic actuator 20 is It includes two coupling arms 12 (coupling arms) forming an installation space.

The tiller body 11 may have various shapes, and a shaft connection hole 11a to which the rotation shaft 15 is relatively rotatably connected may be installed at one end of the tiller body 11 . Although not shown in the drawings, a bearing for rotatably supporting the tiller body 11 with respect to the rotating shaft 15 may be installed between the upper end of the rotating shaft 15 and the inner periphery of the shaft connection hole 11a. The rotation shaft 15 may be connected to the tiller body 11 at a position eccentric by a predetermined distance from the geometric center of the tiller 10 including the tiller body 11 and the coupling arm 12 as a whole.

The coupling arm 12 is formed to extend parallel to each other in one direction at both end portions, so that a space in which the hydraulic actuator 20 is installed is formed between the two coupling arms 12 . When the piston 23 of the hydraulic actuator 20 expands and contracts, the coupling arm 12 interlocks with the piston 23 to rotate smoothly, the inner surface 12a of the coupling arm 12 is It is made of a curved surface having a curvature corresponding to the rotation trajectory of the tiller (10). A stopper 13 for limiting the rotation angle of the tiller 10 while in contact with the end of the piston 23 of the hydraulic actuator 20 is protruded inwardly from the end of each of the coupling arms 12 .

The coupling arm 12 may have a shape in which the inner surface 12a is curved and the outer surface is straight as in this embodiment, but as shown in FIG. 4 , the inner surface 12a and the outer surface All of them may be curved to have an overall circular ring shape.

In addition, in this embodiment, the coupling arm 12 is formed in the form of independent wings extending parallel to each other in one direction at both ends of the tiller body 11, but as shown in FIGS. 5 and 6, the coupling arm 12 ) may have a circular ring shape as a whole while the ends are integrally connected to each other. At this time, the inner surface 12a of the coupling arm 12 is also made of a curved surface having a constant curvature, and the stopper 13 is formed to protrude inwardly at the end of the coupling arm 12 .

The hydraulic actuator 20 is installed between the coupling arms 12 of the tiller 10 to provide an external force to rotate the tiller 10. Referring to FIG. 2, the hydraulic actuator 20 is the coupling arm. A cylinder 21 fixed to the space between the arms 12, a movable disk 22 installed to slide by hydraulic pressure inside the cylinder 21, and two pistons fixed to both sides of the movable disk 22 (23).

The cylinder 21 is fixedly installed on the upper end of the cylinder mount 30 in the form of a shaft installed at the rear of the hull. The cylinder 21 communicates with both sides of the hydraulic chamber 21a and the hydraulic chamber 21a for accommodating the hydraulic oil supplied from an external hydraulic supply device (not shown) and has two ports connected to the hydraulic supply device ( 21b) is provided. The movable disk 22 is disposed between the ports 21b in the hydraulic chamber 21a and is shaped like a disk having a diameter substantially equal to that of the hydraulic chamber 21a, and passes through the port 21b to the hydraulic chamber. It slides in the axial direction of the hydraulic chamber 21a by the hydraulic oil supplied into (21a). That is, when hydraulic pressure is applied to any one of the ports 21b of the cylinder 21, the movable disk 22 is pushed by the hydraulic pressure to move toward the opposite port 21b.

The hydraulic actuator 20 is provided with two pistons 23 , and each piston 23 has an inner end connected to the center of both sides of the movable disk 22 , and an outer end thereof through one end of the cylinder 21 . It extends to the outside and connects to the inner surface 12a of the coupling arm 12 of the tiller 10 .

The piston 23 has a polygonal bar shape such as a round bar or a square having a thickness or diameter that is substantially the same as or slightly smaller than the inner surface 12a of the coupling arm 12, and the outer end of the piston 23 is coupled to the coupling arm 12. An external force is applied to the coupling arm 12 while relatively moving along the inner surface 12a of the arm 12 . At this time, the outer end of the piston 23 can smoothly move relative to each other while generating less friction between the inner surfaces 12a of the coupling arm 12, and the outer end of the piston 23 has a hemispherical shape to minimize wear. of the curved shape of Of course, differently from this, a roller or bearing may be installed at the outer end of the piston 23 to minimize the frictional force between the outer end of the piston 23 and the inner surface 12a of the coupling arm 12 .

This hydraulic rudder control works as follows.

When the operator of the ship adjusts the steering gear, when hydraulic oil is supplied to any one port 21b of the cylinder 21 by the hydraulic supply device, the movable disk 22 inside the cylinder 21 slides in any one direction by hydraulic pressure. Accordingly, the movable disk 22 and the two pistons 23 coupled thereto move to the left or right together.

At this time, the piston 23 moving in the extending direction with respect to the cylinder 21 among the two pistons 23 pushes the inner surface 12a of the coupling arm 12 and exerts a force on the coupling arm 12 . will be applied Accordingly, the tiller 10 rotates about the rotation shaft 15 by a predetermined amount (see FIGS. 3A to 3C and FIG. 6 ).

When the tiller 10 rotates about the rotation shaft 15 by the action of the piston 23, the outer end of the piston 23 collides with the stopper 13 formed at the end of the coupling arm 12, and the rotation angle is limited The rotation angle of the tiller 10 may be limited to approximately 35°, but may be variously changed as necessary.

In the above-described embodiments, the outer ends of the two pistons 23 are connected to the inner surface 12a of the coupling arm 12 having a curved surface, so that as the two pistons 23 move left or right, The curved inner surface 12a of the coupling arm 12 receives a force from the piston 23 and moves relative to the outer end of the piston 23 so that the tiller 10 can rotate.

However, as shown in FIGS. 7 and 8, the center of the cylinder 21 of the hydraulic actuator 20 is rotatably connected to the cylinder rotation shaft 35 installed perpendicular to the hull, and each of the pistons 23 The outer end may be connected to the coupling arms 12 on both sides of the tiller 10 in a relatively rotatable manner via a hinge pin 16 .

In the hydraulic rudder control device of this embodiment, hydraulic oil is supplied to the cylinder 21 and hydraulic pressure is applied to the two pistons 23 on both sides so that the piston 23 moves, the piston 23 moves the coupling arm 12 . At the same time as the coupling arm 12 and the tiller body 11 are rotated by applying a force to the , the cylinder 21 is rotated about the cylinder rotation shaft 35 .

As described above, in the hydraulic rudder control device of the present invention, the hydraulic actuator 20 configured to simultaneously slide the two pistons 23 on both sides of the cylinder 21 is formed generally in parallel with the tiller 10. Two couplings It is installed in the space between the arms 12 and rotates the tiller 10 by pushing the coupling arm 12 of the tiller 10 while the piston 23 of the hydraulic actuator 20 moves, thereby greatly simplifying the overall configuration. and can generate a large driving force with a small force.

In the detailed description of the present invention described above, although it has been described with reference to preferred embodiments of the present invention, those skilled in the art or those having ordinary knowledge in the technical field will And it will be understood that various modifications and variations of the present invention can be made without departing from the technical scope.

10: tiller 11: tiller body
12: coupling arm 12a: inner surface
13: stopper 15: rotation shaft
16: hinge pin 20: hydraulic actuator
21: cylinder 21a: hydraulic chamber
21b: port 22: movable disk
23: piston 30: cylinder mount
35: cylinder rotation shaft

Claims (10)

a tiller connected to the rudder of the ship and installed to rotate about a rotational axis extending in a direction perpendicular to the hull; and,
A hydraulic chamber for accommodating hydraulic oil supplied from the outside, a cylinder communicating with both sides of the hydraulic chamber and having two ports connected to an external hydraulic supply device, and a hydraulic chamber flowing into the hydraulic chamber of the cylinder through the port A movable disk sliding in the axial direction of the hydraulic chamber by hydraulic pressure is installed on both sides of the movable disk to extend outwardly from both ends of the cylinder, and each of the outer ends is connected to both sides of the tiller and slides in the same direction. a hydraulic actuator including two pistons for rotating the tiller around the rotation shaft;
A hydraulic rudder control device for small ships comprising a. According to claim 1, wherein the tiller is formed to extend in a horizontal direction with respect to the ground at both ends of the tiller body to which the rotation shaft is connected, and to form a space in which the hydraulic actuator is installed. A hydraulic rudder control device for a small vessel comprising two coupling arms, wherein the piston of the hydraulic actuator is connected to each of the coupling arms. The hydraulic rudder control device for a small vessel according to claim 1 or 2, wherein the cylinder of the hydraulic actuator is fixedly installed on the hull. 4. The hydraulic actuator according to claim 3, wherein the inner surface of the coupling arm has a curved surface having a curvature corresponding to the rotation trajectory of the tiller about the rotation axis, and the end of the piston of the hydraulic actuator is formed with the curved surface of the coupling arm Hydraulic rudder control device for small ships connected to slide along the curved surface of the coupling arm while connecting. [Claim 5] The hydraulic rudder control device for a small vessel according to claim 4, wherein the end of the piston has a curved surface. [Claim 5] The hydraulic rudder control device for a small vessel according to claim 4, wherein a stopper for limiting the rotation angle of the tiller while in contact with the end of the piston is formed on the inner surface of the coupling arm to protrude inward. According to claim 1, wherein the cylinder of the hydraulic actuator is rotatably connected to a cylinder rotation shaft installed perpendicularly to the hull, and the outer end of each piston is rotatably connected to both sides of the tiller via a hinge pin. Hydraulic rudder control system for small ships. a rotating shaft extending in a direction perpendicular to the hull;
A tiller body connected to the rotating shaft to rotate in both directions about the rotating shaft and to which a rudder of a ship is connected, and both ends of the tiller body are formed to extend in a horizontal direction with respect to the ground, and the inner surface has a constant curvature Tiller including two coupling arms made of a curved surface; and,
Two pistons installed between the coupling arms of the tiller and connected to each coupling arm slide in the same direction by hydraulic pressure while pushing the coupling arm to move the tiller body in either direction about the rotation axis. rotary hydraulic actuator;
A hydraulic rudder control device for small ships comprising a. The hydraulic rudder control device for a small vessel according to claim 8, wherein a stopper for limiting the rotation angle of the tiller while in contact with the outer end of the piston is formed on the inner surface of the coupling arm to protrude inward. The cylinder of claim 8, wherein the hydraulic actuator communicates with a hydraulic chamber for accommodating hydraulic oil supplied from the outside and both sides of the hydraulic chamber and has two ports connected to an external hydraulic supply device; A movable disk sliding in the axial direction of the hydraulic chamber by the hydraulic pressure flowing in through the port in the hydraulic chamber of A hydraulic rudder control device for a small vessel including two pistons connected to both sides of the to rotate the tiller about the rotation axis while sliding in the same direction.

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