KR200483734Y1 - rudder angle indicating device of steering gear in the ship - Google Patents

rudder angle indicating device of steering gear in the ship Download PDF

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Publication number
KR200483734Y1
KR200483734Y1 KR2020150004546U KR20150004546U KR200483734Y1 KR 200483734 Y1 KR200483734 Y1 KR 200483734Y1 KR 2020150004546 U KR2020150004546 U KR 2020150004546U KR 20150004546 U KR20150004546 U KR 20150004546U KR 200483734 Y1 KR200483734 Y1 KR 200483734Y1
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KR
South Korea
Prior art keywords
ram
angle
rudder
steering
moving block
Prior art date
Application number
KR2020150004546U
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Korean (ko)
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KR20170000201U (en
Inventor
유태호
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훌루테크 주식회사
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Priority to KR2020150004546U priority Critical patent/KR200483734Y1/en
Publication of KR20170000201U publication Critical patent/KR20170000201U/en
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Publication of KR200483734Y1 publication Critical patent/KR200483734Y1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/52—Parts for steering not otherwise provided for
    • F16H19/0631—
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/02—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using mechanical means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/16—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying resistance

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Actuator (AREA)

Abstract

The present invention relates to an indicator plate which is disposed adjacent to a ram and is disposed parallel to a moving direction of the ram, A moving block which is fixed to one portion of the ram and is linearly reciprocated together with the ram; An indicator pointer having one end fixed to the moving block and the other end positioned adjacent to an indicator scale formed on the indicator plate; And an angle measurement unit for sensing a moving distance of the moving block and measuring a rotation angle of the rudder stock based on the detected movement distance and providing the measured rotation angle as a digital signal, The present invention provides an apparatus for checking the steering angle of a rudder of a vehicle so that the rudder angle of the rudder can be easily confirmed through steering, and the rudder can be installed at a position where maintenance is easy and visual identification is easy. So that the angle adjustment for manual steering can be easily performed.

Description

Technical Field [0001] The present invention relates to a rudder angle indicating device,

The present invention relates to a steering apparatus used in a ship, and more particularly, to a steering apparatus for use in a ship, which can easily confirm the steering angle of a rudder changed in accordance with a steering operation, The present invention relates to an apparatus for checking the steering angle of a marine steering apparatus according to a new type of steering apparatus.

Generally, a steering apparatus used for a ship is a device for changing the course of a ship by controlling the direction or angle of a rudder disposed at the bottom rear portion of the ship.

There are various kinds of such helmets, but most of the helmets used in ships are powered by hydraulic.

In addition, the above-described helm can be roughly divided into Ram type and Rotary Vane type of a ram cylinder type.

Here, the ram-type steering apparatus includes two or four hydraulic cylinders in which a ram piston is inserted, and a tiller connected to the ram and the rudder is connected to a ram pin or a lap- (Rapson Slide Shoe).

Accordingly, when the hydraulic fluid is supplied to the hydraulic cylinder and the ram is linearly reciprocated in the horizontal direction, the ramp pin and the bush (or bearing) mounted on the ram transmit the linear movement force of the ram to the tiller, As the tiller is rotated by the movement, the rudder stock provided on the tiller is rotated to adjust the direction of the rudder.

At this time, confirmation of the steering angle with respect to the rudder has been proposed in which a separate potentiometer is provided on the rudder stock to sense and confirm the amount of motion of the rudder stock as it rotates, 0.0 > 0460974. ≪ / RTI >

However, since the structure for confirming the steering angle according to the related art described above has a structure in which the shaft of the potentiometer is interlocked with the rudder stock, the rudder stock is extremely restricted in the portion exposed to the outside It is extremely difficult to directly couple the axis of the potentiometer with the rudder stock, and the structure of the potentiometer is very complicated.

Further, when a failure such as an operation failure of the potentiometer for measuring the rotation of the rudder stock occurs, all the other structures coupled with the rudder stock must be disassembled for repair or replacement of the potentiometer And maintenance difficulties.

It is an object of the present invention to make it easy to confirm the steering angle of the rudder changed in accordance with the steering, The present invention provides an apparatus for confirming the steering angle of a marine steering apparatus according to a new type in which an angle for manual steering can be easily adjusted by being installed at a position where identification can be easily performed.

In order to achieve the above-mentioned object, an apparatus for confirming the steering angle of a marine steering apparatus according to the present invention includes a tiller for rotating a rudder stock and a ram for rotating the tiller while linearly reciprocating, An indicator plate disposed parallel to the moving direction of the ram when the indicator plate is positioned, A moving block which is fixed to one portion of the ram and is linearly reciprocated together with the ram; An indicator pointer having one end fixed to the moving block and the other end positioned adjacent to an indicator scale formed on the indicator plate; And an angle measuring unit for sensing a moving distance of the moving block, measuring a rotating angle of the rudder stock based on the detected moving distance, and providing the measured rotating angle as a digital signal.

Here, the indicating scale formed on the indicating plate is displayed in units of angles.

The angle measuring unit may include a rope having one end connected to the moving block and the other end extending from the one end toward the same direction as the moving direction of the moving block, And a sensor element for detecting the amount of rotation of the winding wheel and providing the rotation amount of the winding wheel as a digital signal.

As described above, the steering apparatus for steering control of a marine steering apparatus according to the present invention can accurately grasp tiler, rudder stock, or rudder angle (rudder angle) based on the operation of the ram, It is possible to provide an indication for confirmation of the rotation angle on the display screen, and further, it is possible to achieve ease of maintenance.

In addition, the steering angle confirmation apparatus of the present invention can be used not only for visual confirmation of the instruction scale using the instruction pointer but also for digital display, thereby enabling accurate steering to be confirmed even in the wheelhouse, It is possible to re-authenticate the accuracy of the steering angle with the visual confirmation of the instruction scale used.

1 is a perspective view for explaining a state in which a steering angle detecting device is installed in a marine steering apparatus according to an embodiment of the present invention;
Fig. 2 is a plan view for explaining a state in which the steering angle detecting device is installed in the marine steering apparatus according to the embodiment of the present invention
FIG. 3 is a front view showing a state in which the steering angle detecting device is installed in the marine steering apparatus according to the embodiment of the present invention
FIG. 4 is a state diagram schematically shown for explaining the detailed structure of the angular measurement unit among the steering angle confirmation apparatuses of a marine steering apparatus according to an embodiment of the present invention
5 is a plan view for explaining the operation of the steering angle detecting apparatus when the marine steering apparatus according to the embodiment of the present invention is operated.
FIG. 6 is a front view showing the operation of the steering angle detecting apparatus in operation of the marine steering apparatus according to the embodiment of the present invention
7 is a perspective view for explaining an apparatus for confirming the steering angle of a marine steering apparatus according to another embodiment of the present invention;
8 is a plan view for explaining a steering angle confirming apparatus for a marine steering apparatus according to another embodiment of the present invention
9 is a plan view for explaining the operation of the steering angle detecting apparatus when the marine steering apparatus according to another embodiment of the present invention is operated
10 and 11 are perspective views for explaining an apparatus for confirming the steering angle of a marine steering apparatus according to another embodiment of the present invention

Hereinafter, an embodiment of a steering angle confirming apparatus for a marine steering apparatus according to the present invention will be described with reference to FIGS. 1 to 11. FIG.

Prior to the description of the embodiment, the marine steering apparatus according to the embodiment of the present invention is a device for steering a rudder (not shown) of a ship, and includes a rudder stock 10 connected to the rudder, A tilter 20 for rotating the tilter 20 and a pair of hydraulic cylinders 410 and 42 for linear reciprocating movement of the ram 30, .

The rudder stock 10 is coupled to a lower end of the rudder stock 10 so that the rudder stock 10 is rotated while being rotated around the rudder stock 10. The upper end of the rudder stock 10 is connected to the lower end of the tiller 20, And the pair of hydraulic cylinders 41 and 42 are coupled to both ends of the ram 30 so that the ram 30 is horizontally moved through the supply and discharge of hydraulic pressure by electronic control, . In this regard, it is as shown in FIGS. 1 to 3 attached hereto.

FIG. 1 is a perspective view illustrating a state in which a steering angle determining device is installed in a marine steering apparatus according to a preferred embodiment of the present invention. FIG. 2 is a perspective view showing a steering angle determining device according to a preferred embodiment of the present invention. FIG. 3 is a front view for explaining a state in which the steering angle detecting device is installed in the marine steering apparatus according to the preferred embodiment of the present invention. FIG.

As shown in these drawings, an apparatus for confirming the steering angle of a marine steering apparatus according to an embodiment of the present invention (hereinafter referred to as "steering angle determining apparatus") mainly includes an indicating plate 100, a moving block 200, (300) and an angle measuring unit (400). Through this, it is possible to easily identify the steering angle of the rudder with the naked eye, and also to confirm in the cabin, .

This will be described in more detail below for each configuration.

First, the indicating plate 100 is a portion for indicating the rotation angle of the rudder stock (or tilter) 10. [

The indicating plate 100 may be a flat plate or a thin plate and may be disposed adjacent to the ram 30 in parallel with the moving direction of the ram 30.

In addition, a plurality of indicating graduations 110 are formed on the surface of the indicating plate 100.

In particular, the indicating scale 110 is formed to be displayed in units of angles at which the raster stock (or tilter) 10 rotates.

At this time, although the distances between the indicating graduations 110 are shown to be the same in the drawing, the distance from the center of rotation of the rudder stock 10 to the position where the indicating graduation 110 is located is substantially The distance between the indicating graduations 110 according to the rotation angle of the rudder stock 10 is changed.

Accordingly, in the embodiment of the present invention, the indicating plate 100 can be fixed in a state of being spaced apart by a certain distance from the upper chamber of the ram 30, and the distance between the indicating graduations 110 is So that it can be formed differently based on the rotation angle of the rudder stock 10 as a reference.

Of course, the indicating plate 100 can be fixed in a state of being separated from the ram 30 by a predetermined distance to any one of the right, lower, front, and rear sides of the ram 30, The distance may be differently formed based on the rotation angle of the rudder stock 10 with respect to the position.

Although the structure for fixing the indication plate 100 is not shown in the drawings according to the embodiment of the present invention, in the case of the indication plate 100, a separate bracket (not shown) is used Or one end thereof may be fixed to a certain portion of the steering apparatus.

Next, the moving block 200 is horizontally moved together with the ram 30.

The moving block 200 is configured to be fixed to the ram 30 using the clamping unit 210. When the ram 30 is moved horizontally, the moving block 200 can be moved horizontally .

The instruction pointer 300 indicates the instruction scale 110 formed on the indication plate 100 according to the movement distance of the ram 30 and determines the current rudder angle Rotation angle) can be easily identified by an operator.

One end of the indicating pointer 300 is fixed to the moving block 200 and the other end of the indicating pointer 300 is positioned in a position directly above the indicating plate 100. The indicating mark 300 formed on the indicating plate 100 As shown in FIG. In the embodiment of the present invention, one end of the pointer 300 is fixed in a state of being vertically erected on the upper surface of the clamping part 210 in front of the moving block 200, and the other end is bent And is positioned above the portion on which the indicating scale 110 of the indicating plate 100 is formed.

At this time, the other end of the instruction pointer 300 is formed so as to be gradually tapered toward the end, thereby allowing the indication plate 100 to be correctly identified with respect to the indication scale 110. [

Next, the angle measuring unit 400 senses the moving distance of the moving block 200, measures the rotational angle of the rudder stock 10 based on the detected moving distance, and outputs the measured rotational angle to a digital signal .

The angle measuring unit 400 includes a rope 410, a winding wheel 420 and a sensor element 430 as shown in FIG.

The rope 410 has one end connected to the moving block 200 and the other end extending from the one end to the same direction as the moving direction of the moving block 200, Or it can be unwound and wound. Such a rope 410 may be used as a normal wire or a spring having a self-elastic force such as a spring-loaded spring.

The winding wheel 420 is rotatably installed in an outer casing 440 forming an outer appearance of the angle measuring unit 400 and is formed of a wheel for guiding the winding or unwinding of the rope 410. In particular, the take-up reel 420 is elastically provided so as to be returned to the original position when the external force is removed with respect to the rotational direction thereof. The resilient mounting structure for the take-up reel 420 at this time is, And the like can be used in addition to the above, so a detailed description thereof will be omitted.

The sensor element 430 has a rotation shaft 421 installed to be interlocked with the winding wheel 420 and has the rotation shaft 421 with a change in electric resistance due to the rotation of the rotation shaft 421, And a potentiometer for detecting the rotational displacement of the rotor and converting the rotational displacement to a digital signal. The sensor element 430 provides the converted digital signal to an amplifier which converts the received signal into analog signals of 0 to 10 V and analog signals of 4 to 20 mA, (Not shown) for controlling the operation of the steering apparatus 450 and the command signal value for moving the steering angle of the steering gear.

Meanwhile, the digital indicator 450 receiving the analog signal of 0 to 10V from the control unit is preferably disposed in the wheelhouse. However, the digital indicator 450 may be additionally provided in the enclosure 440 of the angle measuring unit 400, The operator located in the steering apparatus compares the indication scale 110 of the indication plate 100 indicated by the indication pointer 300 with the angle displayed on the digital indicator 450 and determines the angle It is possible to additionally authenticate whether or not the digital signal measured through the measuring unit 500 is correct.

Hereinafter, the operation of the steering angle determination device according to the embodiment of the present invention described above will be described in more detail.

First, the initial state in which the operation control for steering is not performed is as shown in Figs. 2 and 3 attached hereto.

That is, since the high-pressure fluid is not supplied to each of the hydraulic cylinders 41 and 42, the ram 30 is maintained in the center position, so that the tiller 10 is not rotated to the left or right, maintain.

Particularly, in this initial state, the instruction pointer 300 is maintained at the center position of the indicating plate 100, indicating that the rudder stock 10 is not rotated, Can visually recognize the state accurately.

When the operation control is performed in the wheelhouse to steer the ship in the initial state as described above, a high-pressure fluid is supplied to one of the two hydraulic cylinders 41 and 42, And the linear movement of the ram 30 and the rotation of the tiller 10 are performed as shown in FIG.

For example, when a high-pressure fluid is supplied to the lower hydraulic cylinder 41 as viewed from the direction shown in the drawing, the ram 30 is linearly moved upward, and the tiller assembly 10 is also rotated upward (clockwise in the drawing) When the high pressure fluid is supplied to the upper hydraulic cylinder 42, the ram 30 is linearly moved downward and the tiller assembly 10 is also rotated downward (counterclockwise in the drawing).

Thus, the rudder of the tiller 20 and the rudder stock 10 is rotated in the left or right direction (clockwise or counterclockwise in the drawing) by the rotation of the tiller 20 and the rudder stock 10 so that the ship can be steered.

Particularly, during the linear movement of the ram 30 by the driving of the hydraulic cylinders 41 and 42, the moving block 200 fixed to the ram 30 is linearly moved together with the ram 30, The instruction pointer 300 fixed to the mobile block 200 is also moved. Thus, the operator can accurately recognize the rotation angle of the tiller (or the rudder stock or rudder) 20 by checking the indication scale 110 of the indicating plate 100 where the end of the instruction pointer 300 is located.

When the moving block 200 moves linearly together with the ram 30, the rope 410 of the angle measuring unit 400 connected to the ram 30 moves along the moving direction of the moving block 200 The sensor element 430 detects the amount of rotation of the rotating shaft 421 in accordance with the rotation of the winding wheel 420. At this time, And provides the digital signal to the digital indicator 450, which receives the digital signal, so that the current steering angle is displayed.

Therefore, it is possible to accurately recognize the steering angle of the rudder by the operation control of the rudder even in the inside of the wheelhouse.

An operator located at the position of the steering apparatus confirms the indication scale 110 of the indicating plate 100 by the instruction pointer 300 to rotate the tiller (or rudder stock or rudder) The angle of rotation of the tilter (or the rudder stock or rudder) 20 can be checked through the digital indicator 450 separately provided in the housing 440 of the angle measuring unit 400. [

Accordingly, the operator can determine whether the information displayed on the digital indicator 450 is correct through comparison of the two rotational angles, and a digital indicator (not shown) provided in the wheelbarrow, It is possible to detect whether or not the digital signal transmitted to the base station is erroneous.

Furthermore, the operator can perform a manual operation using the remote controller through the confirmation of the instruction scale 110 of the instruction plate 100 by the instruction pointer 300.

As a result, it is possible to accurately grasp the angle of rotation (steering angle) of the tilter 20, the rudder stock 10, or the rudder based on the operation of the ram 30, It is possible to make the display for confirming the rotation angle at a place where the visual confirmation is easy, and furthermore, the maintenance can be facilitated.

Further, since the apparatus for confirming the steering angle of the ship steering apparatus according to the present invention can display not only the visual indication of the indicating scale 110 using the instruction pointer 300 but also the digital indication, it is possible to confirm the accurate steering angle even in the wheelhouse It is possible to authenticate the accuracy of the steering angle again with the visual confirmation of the instruction scale 110 using the instruction pointer 300.

On the other hand, the apparatus for confirming the steering angle of the marine steering apparatus according to the present invention is not limited to the structure of the embodiment described above.

That is, the mobile block 200 of the present invention may be configured to be fixed to the RAM 30 while being provided separately from the conventional general structure as in the above-described embodiments, It is.

For example, a guide bracket (not shown) for preventing the rotation of the ram 30 during its operation is connected to the ram 30, and a guide bracket for mounting the guide guide is fixed to the ram 30, The guiding bracket is used as a moving block 200 of the present invention to move the instruction pointer 300 while being moved together with the ram 30 and also serves as a guide bracket for installing the guide guide You can do it. This is as shown in FIGS. 7 to 9 attached hereto.

At this time, the instruction pointer 300 is fixedly installed on the upper surface of the moving block (guide bracket) 200, and can be moved together with the moving block 200.

In addition, the angle measuring unit 400 of the present invention is not limited to being connected to only the moving block 200. For example, as shown in FIG. 10, The connection terminal 31 may be formed to connect the rope 410 constituting the angle measuring unit 400 to the connection terminal 31. [

Of course, the rope 410 constituting the angle measuring unit 400 may be directly connected to the ram 30 as shown in FIG.

As described above, the embodiment described above is merely an exemplary description of the steering angle detecting device for a marine steering system according to the present invention, but the right of the present invention is as described in the claims for utility model registration.

10. Rudder Stock 20. Tiller
30. RAM 41, 42. Hydraulic cylinder
100. Indication plate 110. Indication scale
200. Moving block 210. Clamping part
220. Bolt 300. Instruction pointer
400. Angle measuring part 410. Rope
420. Winding wheel 421. Rotation shaft
430. Sensor element 440. Enclosure
450. Digital Indicator

Claims (3)

A tilter 20 for rotating the rudder stock 10 and a ram 30 for rotating the tilter 20 in a linear reciprocating motion, The steering apparatus according to claim 1,
An indicating plate 100 disposed adjacent to the ram 30 in parallel to the moving direction of the ram 30 and having an indicating graduation 110 formed on the surface thereof in an angle unit;
A moving block 200 which is fixed to one portion of the ram 30 and is linearly reciprocated together with the ram 30;
An indicator pointer 300, one end of which is fixed to the mobile block 200, and the other end of which is positioned adjacent to the indicator scale 110 formed on the indicator plate 100;
An angle measuring unit 400 for detecting a moving distance of the moving block 200 and measuring a rotating angle of the rudder stock 10 based on the detected moving distance and providing the measured rotating angle as a digital signal; ≪ / RTI &
Wherein the moving block 200 is constituted by a guide bracket configured to be installed while grasping the guide guide and the instruction pointer 300 is fixed to the upper surface of the moving block 200 constituted by the guide bracket. Apparatus for checking the steering angle of the steering system. delete The method according to claim 1,
The angle measuring unit 400
A rope 410 connected to the mobile block 200 at one end and extending from the one end toward the same direction as the moving block 200,
A winding wheel 420 which is connected to the other end of the rope 410 so as to be elastically rotatable and guides the winding or unwinding of the rope 410,
And a sensor element (430) for sensing the amount of rotation of the winding wheel (420) and providing it as a digital signal.
KR2020150004546U 2015-07-06 2015-07-06 rudder angle indicating device of steering gear in the ship KR200483734Y1 (en)

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KR2020150004546U KR200483734Y1 (en) 2015-07-06 2015-07-06 rudder angle indicating device of steering gear in the ship

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KR2020150004546U KR200483734Y1 (en) 2015-07-06 2015-07-06 rudder angle indicating device of steering gear in the ship

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KR200483734Y1 true KR200483734Y1 (en) 2017-06-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102093229B1 (en) 2018-10-08 2020-03-25 훌루테크 주식회사 steering gear having a rudder angle transmitter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102145942B1 (en) 2019-04-11 2020-08-19 훌루테크 주식회사 Steering device including steering angle detecting device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200286073Y1 (en) * 2002-05-22 2002-08-21 최규수 Liner
JP3924047B2 (en) * 1997-05-12 2007-06-06 石川島建機株式会社 Boom angle meter

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58144220U (en) * 1982-03-23 1983-09-28 横河電機株式会社 Position sensing actuator
KR101338310B1 (en) * 2011-11-18 2013-12-09 장진웅 A rudder angle sensor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3924047B2 (en) * 1997-05-12 2007-06-06 石川島建機株式会社 Boom angle meter
KR200286073Y1 (en) * 2002-05-22 2002-08-21 최규수 Liner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102093229B1 (en) 2018-10-08 2020-03-25 훌루테크 주식회사 steering gear having a rudder angle transmitter

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