KR101722752B1

KR101722752B1 - Model ship performance test equipment

Info

Publication number: KR101722752B1
Application number: KR1020150064805A
Authority: KR
Inventors: 김세훈; 정기성
Original assignee: 삼성중공업 주식회사
Priority date: 2015-05-08
Filing date: 2015-05-08
Publication date: 2017-04-03
Also published as: KR20160131773A

Abstract

According to an embodiment of the present invention, a model line performance test apparatus is provided.
A model line performance testing apparatus according to an embodiment of the present invention includes a support frame installed on a tow truck, a movable body movably coupled to the support frame, a drive unit connecting the support frame and the movable body, And a controller for receiving the coordinate values of the model line from the motion measurement system and controlling the movement distance of the moving object by controlling the driving unit.

Description

{MODEL SHIP PERFORMANCE TEST EQUIPMENT}

The present invention relates to a model line performance test apparatus, and more particularly, to a model line performance test apparatus for an endurance performance test in a towed water tank.

In order to evaluate the movement of the ship while the ship is navigating irregular sea, a model line drawn in the same form is made and SEAKEEPING TEST is performed in the tank.

At this time, the model line is moved in accordance with the tug installed in the tank. When the model line is tested in a free tank in the water tank, the movement of the model line is measured at six degrees of freedom and the propeller and key are controlled using the measured value so that the model line moves at the same speed and direction as the trawl. In addition, the model line is provided with a winch on the frame installed on the towing train, and the line connected to the winch is connected to the model line so that it can not be loosened during the test so as not to affect the test. Respectively.

Particularly, during the test of the inner line of the model line, it is loosely connected in order to reduce the influence of the line. However, the wind line and the wave cause the model line to move in the direction of SURGE MOTION, SWAY MOTION and HEAVE MOTION There is a problem that the model line deviates from the path and it becomes impossible to measure the motion of the model line with 6 degrees of freedom.

Korean Patent Publication No. 10-2005-0014369

An object of the present invention is to provide a model line performance test apparatus for moving a model line so that the movement of a model line can be effectively measured.

The technical objects of the present invention are not limited to the technical matters mentioned above, and other technical subjects not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided an apparatus for testing a model line performance, the apparatus comprising: a support frame installed on a tow truck; a movable body movably coupled to the support frame; And a controller for receiving the coordinate values of the model line from the motion measurement system and controlling the driving unit to control the driving unit to move the model line, And a controller for adjusting the moving distance of the motor.

The controller may move the moving object according to the amount of change of the coordinate value when the coordinate value measured by the motion measuring meter changes in the forward or backward direction of the model line.

The driving unit may include a ball screw installed on the inside of the support frame, a coupling member coupled to the moving body and having a screw thread engaged with the ball screw, and a driving unit rotating the ball screw.

The fixed line may be coupled to the moving object and the model line at a position where a distance between the moving object and the model line is minimized.

In addition, the motion measurement meter may be installed outside the model line, and may detect a sign installed on the model line to measure the coordinate value of the model line.

According to the present invention, the movement of the model lines can be effectively measured.

In addition, even if the model line fluctuates excessively, the model line can be moved effectively without deviating from the measurement range of the 6-degree-of-freedom motion measuring system.

1 is a view schematically showing a state in which a model line is coupled to a towing train in a water tank according to an embodiment of the present invention.
2 is a perspective view showing a tram, which is an example of Fig.
Fig. 3 is a view showing a moving body and a model line coupled to a support frame of a train, which is an example of Fig. 1. Fig.
Fig. 4 is a view schematically showing a sectional view of Fig. 3. Fig.
5 is a schematic view illustrating an operation of controlling a driving unit of a support frame according to an embodiment of the present invention.
FIG. 6 is a schematic view illustrating movement of a model line according to an exemplary embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, a model line performance test apparatus according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 6. FIG.

1 is a view schematically showing a state in which a model line is coupled to a towing train in a water tank according to an embodiment of the present invention.

Referring to Fig. 1, a model line performance test apparatus 1 according to an embodiment of the present invention is installed so as to be located on the water surface below an opening formed in a train 3, which is a model line 5. The model line 5 is restrained so as to be freely movable in a standing frame 10 surrounding the opening of the towing train 3. [

As shown in Fig. 1, the water tub 2 is provided with rails on both side walls so that the tow truck 3 can move. Thus, when the towing trolley 3 moves along the rail, the model line 5 partially locked in the water filled in the water tray 2 moves along the trolley train 3. Particularly, the model line 5 moves according to the measurement value of the 6-degree-of-freedom motion measuring instrument 40 which measures the movement of the model line 5.

FIG. 2 is a perspective view showing a tram, which is an example of FIG. 1, FIG. 3 is a view showing a moving body and a model line coupled to a support frame of a train, which is an example of FIG. 1, FIG. 4 is a schematic cross- 5 is a schematic view illustrating an operation of controlling a driving unit of a support frame according to an embodiment of the present invention.

A model line performance test apparatus 1 according to an embodiment of the present invention includes a support frame 10 connecting an opening of a tow truck 3 and a support frame 10 connected to the support frame 10, A driving unit 13 connecting the moving body 20 and the supporting frame 10 and moving the moving body 20; a fixing line 30 connecting the moving body 20 and the model line 5; And a controller 50 for moving the moving object 20 according to the measured values from the motion measurement system 40 and the motion measurement system 40 for measuring the motion of the model line 5.

The support frame 10 connects the opening of the trailer 3 in the stern direction at the top of the model line 5, that is, in the forward direction of the model line 5. As shown in FIG. 2, two square pipes are arranged side by side, and connection pipes connecting the square pipes are combined to form a single ladder. However, the support frame 10 may be formed of various types of pipes such as a cylindrical bar or a polygonal pipe.

The movable body 20 is movably coupled along the support frame 10. The moving body 20 is woven into a square frame and the fixing line 30 connected to the model line 5 is engaged.

The moving body 20 is coupled to the support frame 10 so as to move in the stern direction, that is, forward and backward from the head of the model wire 5. As shown in Fig. 3, the support frame 10 and the moving body 20 are engaged by the driving portion 13. [ The driving unit 13 causes the moving body 20 to move along the support frame 10. [ The driving unit 13 includes a ball screw 15, a coupling member 17 and a motor (not shown). The ball screw 15 is installed inside the hollow support frame 10 and rotated by a motor (not shown). The engaging member 17 is internally formed with a screw tab so that the moving body 20 can be moved along the ball screw 15. [ Accordingly, when the ball screw 15 rotates, the screw 20 of the ball screw 15 and the screw of the engaging member 17 engage with each other and the moving body 20 moves.

However, the present invention is not limited to this, and the driving unit 13 can movably couple the movable body 20 to the support frame 10 by various methods. For example, the moving body 20 and the support frame 10 may be combined by a gear combination, for example a rack-and-pinion gear combination, to which a motor (not shown) is connected.

Further, as shown in the drawings, the movable body 20 is coupled to the lower portion of the support frame 10, but not limited thereto, or can be coupled to the side of the support frame 10 have.

The model line 5 can be moved back and forth by the engagement of the movable body 20 and the support frame 10 as described above.

The fixed line 30 connects the moving body 20 and the model line 5. The fixed ropes 30 are joined so that the length of the movable ropes 20 connected to the model lines 5 is minimized. That is, the moving body 20 is vertically connected to the model line 5. This makes it possible to prevent the model line 5 from deviating greatly from the path and to minimize the interference of the fixing line 30 when the model line 5 is severely rocked to the left and right. The fixing line 30 is coupled to both sides of the head and both sides of the stern so that the model line 5 does not sway to the left or right. However, the present invention is not limited to this and can be combined with various positions of the model lines 5.

The motion meter 40 measures six degrees of freedom of the model line 5 and grasps the motion of the model line 5. When the six degrees of freedom of the model line 5 are measured, the controller 50 sends it to the controller 50. As shown in Fig. 2, the motion meter 40 can measure the motion of the model line 5 in a non-contact manner. A sign 45 for sensing the signal of the motion meter 40 is installed on the model line 5 and the motion meter 40 is installed at a position where the sign 45 of the model line 5 can be detected do. Therefore, the motion measuring instrument 40 grasps the position of the model line 5 through the position of the sign 45 provided on the model line 5. [ In other words, the motion meter 40 extracts the coordinate value of the model line 5 to be transmitted to the controller 50.

The controller 50 grasps the motion of the model line 5 through the coordinate values of the six degrees of freedom of the model line 5 measured by the motion measurement system 40. [ The controller 50 recognizes whether the movement of the model line 5 is a forward / backward movement, a left / right movement, or a vertical movement, and judges in real time whether the mobile 20 should be moved. When the model line 5 moves back and forth by the wind or wave, the controller 50 analyzes the coordinate values of the model lines 5 moved back and forth from the motion meter 40 to calculate the moving distance of the moving object 20 do. Thereafter, the controller 50 rotates the ball screw 15 through a motor (not shown) so that the model wire 5 coupled to the moving body 20 can be moved.

As described above, the model line performance testing apparatus 1 grasps the movement of the model line 5 by using the measured values of the 6-degree-of-freedom motion measuring system 40, and when the model line 5 moves back and forth, To move the model line 5 back and forth. The model line performance testing apparatus 1 can not exceed the measurement range of the motion measuring system 40 because the pattern line 5 does not deviate greatly from the path even if the model line 5 moves left and right due to the fixed line 30 connected to the model line 5 .

FIG. 6 is a schematic view illustrating movement of a model line according to an exemplary embodiment of the present invention.

6, when the model line 5 is advanced forward or backward by wind or wave, the controller 50 analyzes the coordinate value of the model line 5 received from the motion meter 40 Moves the model line (5). Therefore, the movement of the model line 5 can be grasped without interference even in the free standing test of the model line 5, even though the fixed line 30 is connected to the model line 5 with a minimum length.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1: Model Line Performance Test System
2: water tank 3: tow truck
5: model line 10: support frame
13:
20: moving body 30: fixed line
40: Motion meter 50: Controller

Claims

A support frame installed on the towing vehicle;
A moving body movably coupled to the support frame;
A driving unit connecting the supporting frame to the moving body and causing the moving body to move along the supporting frame;
A fixed line connecting the moving object and the model line;
A motion meter for measuring the motion of the model line; And
And a controller receiving the coordinate value of the model line from the motion measurement system and controlling the driving unit to adjust the moving distance of the moving object,
The moving body is coupled to the support frame so as to move back and forth of the model line,
The driving unit may include a ball screw installed inside the support frame,
And a coupling member coupled to the moving body and having a threaded portion engaged with the ball screw,
Wherein the controller moves the moving object according to a variation amount of the coordinate value when the coordinate value measured by the movement measuring meter changes in the forward and backward direction of the model line.

delete

2. The model wire performance test apparatus according to claim 1, wherein the fixed string is coupled to the moving body and the model wire at a position where the distance between the moving body and the model wire is minimized.

The model line performance test apparatus according to claim 1, wherein the motion measuring instrument is installed outside the model line, and detects a signboard installed on the model line to measure coordinate values of the model line.