Multi-angle wave direction ship water elasticity test arrangement frame

Abstract

The invention relates to a multi-angle wave direction ship water elasticity test arrangement frame, which comprises a first adjusting flange fixedly provided with a connecting frame used for being connected with a trailer; the second adjusting flange can rotate and be fixed relative to the first adjusting flange; the first support comprises a first telescopic frame body and a second telescopic frame body which are fixedly connected with the second adjusting flange and used for installing the ship model, and the first telescopic frame body and the second telescopic frame body are connected with the two side walls of the same ship model in a one-to-one correspondence mode; the second support is fixedly connected with the second adjusting flange, the second support is provided with measuring modules used for measuring motion data of the ship model, and the bottom ends of the two measuring modules are fixedly connected with two different positions, arranged front and back, of a deck of the same ship model respectively. According to the multi-angle wave direction ship water elasticity test arrangement frame, the problems that an existing device simulating complex wave incidence conditions is complex in structure, high in requirement and unstable in operation can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of ship hydroelastic experimental equipment, and particularly relates to a multi-angle wave direction ship hydroelastic test arrangement frame for simulating complex wave incidence conditions. Background Art

[0002] In the experimental research of hydroelastic mechanics, it is usually necessary to simulate the working conditions of ships or ocean structures encountering multi-angle wave loads at different speeds to comprehensively evaluate their hydrodynamic performance and structural responses. However, due to the physical limitations of experimental equipment, traditional experimental methods often face certain challenges. Specifically, traditional towing tank wavemakers can usually only generate regular or irregular waves in a fixed direction, and the towing tank trailer system mostly moves in one direction. Therefore, the experimental conditions are usually limited to two typical wave incidence directions, namely head sea and following sea, and it is difficult to accurately simulate multi-angle wave conditions such as oblique sea and beam sea.

[0003] Existing design solutions: The development of a multi-directional wavemaker system, by arranging multiple groups of wavemakers or using a multi-directional wavemaker array, generates waves in different directions. Wavemakers are installed on both sides or four sides of the pool, and by coordinating the phases and amplitudes of each wavemaker, oblique waves or beam waves are synthesized. Or keep the direction of the waves generated by the wavemaker, and drive the ship model to turn through the trailer system so as to move in different directions, thereby simulating different wave incidence directions. The disadvantages of the existing design solutions are as follows: The introduction of a multi-directional wavemaker system and a rotating platform can enhance the experimental function, but it will greatly increase the equipment complexity, technical threshold and civil engineering cost. The multi-directional wavemaker system needs to install multiple groups of wavemakers (such as on both sides or four sides) and is equipped with a complex control system to coordinate the phases and amplitudes of each wavemaker. This will lead to a significant increase in equipment cost, and at the same time, the installation, commissioning and maintenance of the system are more complex. When multiple groups of wavemakers work simultaneously, the generated waves may interfere with each other, resulting in uneven or unstable wave fields. In addition, the reflected waves at the pool boundary will also affect the wave quality, and the simultaneous operation of multiple groups of wavemakers will significantly increase the energy consumption, especially when generating large-amplitude or irregular waves, increasing the operation cost of the experiment. Driving the ship model to turn with a trailer requires the trailer to have high precision, high stability and high load-bearing capacity to drive the experimental model to be at a stable angle during the movement in water. This poses extremely high requirements for mechanical design and manufacturing. It increases the difficulty and cost of equipment development. In addition, this method will occupy a large building area, restricting the arrangement of other experimental equipment. Summary of the Invention

[0004] The present invention provides a multi-angle wave-direction ship hydroelastic test arrangement frame, which can overcome the problems of complex structure, high requirements and unstable operation of existing equipment for simulating complex wave incidence conditions.

[0005] The multi-angle wave-direction ship hydroelastic test arrangement frame of the present invention includes:

[0006] A first adjusting flange, which is fixed with a connecting frame for connecting with a trailer;

[0007] A second adjusting flange, which is parallel to and vertically opposite to the first adjusting flange, and can rotate relative to the first adjusting flange and be fixed;

[0008] A first bracket, which is located in a plane A passing through the axis of the second adjusting flange, and includes a first telescopic frame body and a second telescopic frame body for installing a ship model, which are fixedly connected with the second adjusting flange. The first telescopic frame body and the second telescopic frame body are symmetric about a plane B passing through the axis of the second adjusting flange. The plane B is perpendicular to the plane A, and the elastic expansion and contraction of the first telescopic frame body and the second telescopic frame body are also symmetric about the plane B. The first telescopic frame body and the second telescopic frame body are respectively connected to two side walls of the same ship model in one-to-one correspondence;

[0009] A second bracket, which is located in the plane B and is fixedly connected with the second adjusting flange. The second bracket is provided with a measurement module for measuring the motion data of the ship model. The bottom ends of the two measurement modules are respectively fixedly connected to two different positions arranged front and back on the deck of the same ship model.

[0010] Preferably, the arrangement frame further includes a fixed shaft. The first adjusting flange is fixed to the fixed shaft, and the second adjusting flange is installed on the fixed shaft through a bearing and can rotate relative to the fixed shaft.

[0011] Preferably, the arrangement frame further includes a hydraulic drive mechanism that can drive the second adjusting flange to rotate and position it.

[0012] Preferably, the first adjusting flange has a plurality of adjusting holes, which are located on the same circle and are evenly spaced. The second adjusting flange is provided with adjusting holes. The first adjusting flange and the second adjusting flange are fixed by bolts and the adjusting holes.

[0013] Preferably, the angle between adjacent adjusting holes of the first adjusting flange is 10°-z0°.

[0014] Preferably, both the first telescopic frame body and the second telescopic frame body include a horizontal telescopic arm connected to the second adjusting flange and extending radially outward from the second adjusting flange, and a fixed arm fixed to the telescopic end of the horizontal telescopic arm and extending into the water. The horizontal telescopic arm can be horizontally telescoped and positioned. The fixed arm is provided with a horizontal elastic arm for connecting with the ship model and extending radially inward. The horizontal elastic arm can deform in a direction parallel to the radial direction and the axial direction of the second adjusting flange. The horizontal telescopic arm and the horizontal elastic arm are parallel and both extend along the radial direction of the second adjusting flange. The horizontal telescopic arms of the first telescopic frame body and the second telescopic frame body extend along the same straight line.

[0015] Preferably, the horizontal elastic arm includes a first fixing member fixed to the fixed arm, a second fixing member for connecting with the ship model, and an elastic member with one end fixedly connected to the first fixing member and the other end fixedly connected to the second fixing member. The elastic member can deform in the horizontal direction and the vertical direction.

[0016] Preferably, the second bracket includes a first frame body and a second frame body. The first frame body and the second frame body are symmetric about the plane A where the first bracket is located. The second bracket further includes a horizontal guide rail and two measurement modules that can move along the horizontal guide rail and are fixed. The two ends of the horizontal guide rail are respectively connected to the first frame body and the second frame body in one-to-one correspondence.

[0017] Preferably, the first adjusting flange is provided with two connecting frames. The two connecting frames are located in a plane C passing through the axis of the first adjusting flange and are symmetric about a plane D passing through the axis of the first adjusting flange. The plane D is perpendicular to the plane C. Each connecting frame is provided with a wedge-shaped clamp. The wedge-shaped clamp has a connecting opening facing outward horizontally, and the opening directions of the wedge-shaped clamps of the two connecting frames are opposite.

[0018] Preferably, the connecting frame includes a fixed connecting arm extending upward from the second adjusting flange, and a telescopic connecting arm extending radially outward parallel to the radial direction of the second adjusting flange from the fixed connecting arm. The telescopic connecting arm can be telescoped and positioned. The wedge-shaped clamp is fixed to the end of the telescopic connecting arm.

[0019] Compared with the prior art, the present invention has the following beneficial effects: By rotating the second adjusting flange, the angle of the ship model can be adjusted, and the incident direction of the wave relative to the ship model can be changed without changing the direction of the wave. Thus, full-wave-direction-angle pool model tests such as the ship model facing the wave, oblique wave, and transverse wave can be realized. This way of adjusting the incident direction of the wave relative to the ship model is simple and flexible to operate. Only the second adjusting flange needs to be adjusted, and the angle can be adjusted as needed. Full-wave-direction-angle pool model tests can be realized. At the same time, the existing single-direction wave maker does not need to be changed, and the course of the trailer does not need to be changed. After the angle is adjusted, it remains unchanged. Therefore, the working state is stable and the cost is very low. Description of the Drawings

[0020] Figure 1 Schematic perspective view of the multi - angle wave - direction ship hydro - elastic test setup frame according to an embodiment of the present invention.

[0021] Figure 2 Schematic front - view structure diagram of the multi - angle wave - direction ship hydro - elastic test setup frame according to an embodiment of the present invention.

[0022] Figure 3 Schematic top - view structure diagram of the multi - angle wave - direction ship hydro - elastic test setup frame according to an embodiment of the present invention.

[0023] Reference Numerals

[0024] 1 First adjustment flange, 11 Adjustment holes, 12 Bolts, 13 Connecting frame, 131 Fixed connecting arm, 132 Telescopic connecting arm, 133 Wedge - shaped clamp, 1331 Connecting opening;

[0025] 2 Second adjustment flange;

[0026] 3 First support, 31 First telescopic frame body, 311 Horizontal telescopic arm, 312 Fixed arm, 313 Horizontal elastic arm, 3131 First fixing member, 3132 Second fixing member, 3133 Elastic member, 32 Second telescopic frame body;

[0027] 4 Second support, 41 First frame body, 42 Second frame body, 43 Horizontal guide rail, 44 Measuring module;

[0028] 5 Ship model. Detailed Description of the Invention

[0029] The present invention provides a multi - angle wave - direction ship hydro - elastic test setup frame, as Figures 1-3 shown, comprising: a first adjustment flange 1, a second adjustment flange 2, a first support 3 and a second support 4. Among them, the first adjustment flange 1 is fixed with a connecting frame 13 for connecting with a trailer, and the trailer can move the entire setup frame and the ship model 5 in the experimental pool. The second adjustment flange 2 is parallel and vertically opposite to the first adjustment flange 1, and both are horizontal in the state of being installed on the trailer. The second adjustment flange 2 can rotate relative to the first adjustment flange 1 and be fixed. As Figure 3 shown, the first support 3 is located in a plane A passing through the axis of the second adjustment flange 2, and includes a first telescopic frame body 31 and a second telescopic frame body 32 fixedly connected to the second adjustment flange 2. The first telescopic frame body 31 and the second telescopic frame body 32 are symmetric about a plane B passing through the axis of the second adjustment flange 2. As Figure 3As shown in the figure, plane B is perpendicular to plane A, and the elastic expansion and contraction of the first telescopic frame 31 and the second telescopic frame 32 are also symmetric about plane B. The first telescopic frame 31 and the second telescopic frame 32 are respectively and correspondingly connected to two side walls of the same ship model 5. The expansion and contraction of the first telescopic frame 31 and the second telescopic frame 32 enable the layout frame to be applicable to ship models 5 of various sizes. When the width of the ship model 5 is relatively large, the first telescopic frame 31 and the second telescopic frame 32 are symmetrically extended outwards to adapt to the width of the ship model 5. When the width of the ship model 5 is relatively small, the two frames need to be symmetrically retracted inwards. The second bracket 4 is located in plane B and is fixedly connected to the second adjusting flange 2, and the second bracket 4 is provided with a measurement module 44 for measuring the motion data of the ship model 5.

[0030] By rotating the second adjusting flange 2, the angle of the ship model 5 can be adjusted. Without changing the direction of the wave, the incident direction of the wave relative to the ship model 5 can be changed, so that full-wave-angle tank model tests such as head sea, oblique sea, and beam sea of the ship model 5 can be realized. This way of adjusting the incident direction of the wave relative to the ship model 5 is simple and flexible to operate. Only the second adjusting flange 2 needs to be adjusted, and the angle can be adjusted as needed. Full-wave-angle tank model tests can be realized. At the same time, there is no need to change the existing one-way wave maker, nor the heading of the trailer. After the angle is adjusted, it remains unchanged. Therefore, the working state is stable and the cost is very low.

[0031] The layout frame further includes a fixed shaft (not shown in the figure). The first adjusting flange 1 is fixed to the fixed shaft (not shown in the figure). The second adjusting flange 2 is installed on the fixed shaft through a bearing and can rotate relative to the fixed shaft. The bearing is preferably a crossed roller bearing, which can stably bear forces in multiple directions. In one embodiment, the first adjusting flange 1 has a plurality of adjusting holes 11. The plurality of adjusting holes 11 are located on the same circle and are evenly spaced. The second adjusting flange 2 is provided with adjusting holes 11. The first adjusting flange 1 and the second adjusting flange 2 are fixed through bolts 12 and the adjusting holes 11. The angle between adjacent adjusting holes 11 of the first adjusting flange 1 is preferably 10°-20°, and in this embodiment, it is 15°, that is, the ship model 5 can adjust the direction relative to the wave generated by the wave maker in units of 15°.

[0032] As Figure 1As shown, both the first telescopic frame body 31 and the second telescopic frame body 32 include a horizontal telescopic arm 311 connected to the second adjusting flange 2 and extending radially outward from the second adjusting flange 2, and a fixed arm 312 fixed to the telescopic end of the horizontal telescopic arm 311 and extending into the water. The horizontal telescopic arm 311 can be horizontally telescoped and positioned to adapt to ship models 5 of different widths. The fixed arm 312 is provided with a horizontal elastic arm 313 for connecting to the ship model 5 and extending radially inward. The horizontal elastic arm 313 is horizontal when not stressed. When the ship model 5 is subjected to the force of waves in the water, it can deform in the horizontal and vertical directions, including compression, extension, rotation, etc., to ensure the degrees of freedom of the ship model 5 for lifting, rolling, swaying, and pitching. In this embodiment, the measurement module 44 can measure the data of the ship model 5 for lifting, rolling, pitching, and heaving. The measurement module 44 can adopt an existing four-degree-of-freedom seaworthiness instrument, such as a product with the model of Weisan HEU-V4 produced by Qingdao Weisan Marine Technology Co., Ltd. The horizontal telescopic arm 311 and the horizontal elastic arm 313 are parallel and both extend along the radial direction of the second adjusting flange 2. The horizontal telescopic arms 311 of the first telescopic frame body 31 and the second telescopic frame body 32 extend along the same straight line.

[0033] As Figure 1 shown, the horizontal elastic arm 313 includes a first fixing member 3131 fixed to the fixed arm 312, a second fixing member 3132 for connecting to the ship model 5, and an elastic member 3133 with one end fixedly connected to the first fixing member 3131 and the other end fixedly connected to the second fixing member 3132. In this embodiment, the first fixing member 3131 and the second fixing member 3132 are parallel to each other and are both vertical fixing plates, and the second fixing member 3132 is parallel to the side wall of the ship model 5 at the connection position. The elastic member 3133 can deform in the same direction as the telescopic arm. In this embodiment, the elastic member 3133 is a spring and can deform in the horizontal direction and also in the up and down directions.

[0034] In this embodiment, as Figure 1As shown, the second bracket 4 includes a first frame body 41 and a second frame body 42. The first frame body 41 and the second frame body 42 can be configured as telescopic frame bodies like the first telescopic frame body 31, or can be configured as frame bodies with a fixed length. The first frame body 41 and the second frame body 42 are symmetric about the plane A where the first bracket 3 is located. The second bracket 4 further includes a horizontal guide rail 43 and two measuring modules 44 that move along the horizontal guide rail 43. The two ends of the horizontal guide rail 43 are respectively connected to the first frame body 41 and the second frame body 42 in a one-to-one correspondence. The bottom ends of the two measuring modules 44 are respectively fixedly connected to two different positions arranged front and back on the deck of the same ship model 5. During measurement, the two measuring modules 44 are fixed to the horizontal guide rail 43. When changing the model of the test ship model 5, such as when the ship model 5 becomes longer, the front-back distance between the two measuring modules 44 needs to be adjusted larger along the horizontal guide rail 43 and then fixed to the horizontal guide rail 43. If the ship model 5 becomes smaller, the front-back distance between the two measuring modules 44 needs to be adjusted smaller.

[0035] As Figure 1 As shown, the first adjusting flange 1 is provided with two connecting frames 13. The two connecting frames 13 are located in a plane C passing through the axis of the first adjusting flange 1 and are symmetric about a plane D passing through the axis of the first adjusting flange 1. The plane D is perpendicular to the plane C. In this embodiment, the plane C coincides with the plane A, and the plane D coincides with the plane B. Of course, in other embodiments, they may not coincide. Each connecting frame 13 is provided with a wedge-shaped fixture 133. The wedge-shaped fixture 133 has a connecting opening 1331 facing horizontally outwards. As Figure 1 shown, the opening directions of the wedge-shaped fixtures 133 of the two connecting frames 13 are opposite, making the fixed connection between the connecting frame 13 and the trailer more stable.

[0036] In this embodiment, as Figure 1 shown, the connecting frame 13 includes a fixed connecting arm 131 extending upwards from the second adjusting flange 2, and a telescopic connecting arm 132 extending radially outwards parallel to the second adjusting flange 2 from the fixed connecting arm 131. The telescopic connecting arm 132 can be telescoped and positioned. The wedge-shaped fixture 133 is fixed to the end of the telescopic connecting arm 132. The telescopic connecting arm 132 enables the connection position to be adjusted as needed, so as to adapt to different trailer connecting parts.

[0037] In another embodiment, the arrangement frame further includes a hydraulic driving mechanism (not shown in the figure) that can drive the second adjusting flange 2 to rotate and position it. At this time, stepless adjustment of the angle of the ship model 5 can be achieved, that is, the ship model 5 can stay at any angle, thereby forming a wave incident angle at any angle. The structure and driving method of the hydraulic driving mechanism in this embodiment are existing and will not be specifically described here.

[0038] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art make various modifications or equivalent substitutions within the essence and protection scope of the present invention, which also fall within the protection scope of the present invention.

Claims

1. A multi-angle wave direction ship hydroelasticity test arrangement frame, characterized in that Comprising: A first adjusting flange, fixed with a connecting frame for connecting with a trailer; A second adjusting flange, parallel and vertically opposite to the first adjusting flange, rotatable and fixable relative to the first adjusting flange; A first bracket, located in a plane A passing through the axis of the second adjusting flange, including a first telescopic frame body and a second telescopic frame body for installing a ship model, which are fixedly connected to the second adjusting flange. The first telescopic frame body and the second telescopic frame body are symmetric about a plane B passing through the axis of the second adjusting flange. The plane B is perpendicular to the plane A, and the elastic telescoping of the first telescopic frame body and the second telescopic frame body is also symmetric about the plane B. The first telescopic frame body and the second telescopic frame body are respectively connected to two side walls of the same ship model in one-to-one correspondence; A second bracket, located in the plane B and fixedly connected to the second adjusting flange. The second bracket is provided with a measurement module for measuring the motion data of the ship model. The bottom ends of the two measurement modules are respectively fixedly connected to two different positions arranged front and back on the deck of the same ship model.

2. The arrangement rack according to claim 1, characterized in that, The arrangement frame further includes a fixed shaft. The first adjusting flange is fixed to the fixed shaft, and the second adjusting flange is installed on the fixed shaft through a bearing and can rotate relative to the fixed shaft.

3. The mounting rack according to claim 2, wherein, The arrangement frame further includes a hydraulic driving mechanism that can drive the second adjusting flange to rotate and position it.

4. The arrangement rack according to claim 2, characterized in that, The first adjusting flange has a plurality of adjusting holes, which are located on the same circle and evenly spaced. The second adjusting flange is provided with adjusting holes. The first adjusting flange and the second adjusting flange are fixed by bolts and the adjusting holes.

5. The layout rack according to claim 4, characterized in that, The angle between adjacent adjusting holes of the first adjusting flange is 10° - 20°.

6. The layout rack according to claim 1, characterized in that Both the first telescopic frame body and the second telescopic frame body include a horizontal telescopic arm extending radially outward from the second adjusting flange and connected to the second adjusting flange, and a fixed arm fixed to the telescopic end of the horizontal telescopic arm and extending into the water. The horizontal telescopic arm can be horizontally telescoped and positioned. The fixed arm is provided with a horizontal elastic arm for connecting with the ship model and extending radially inward. The horizontal elastic arm can deform parallel to the radial and axial directions of the second adjusting flange. The horizontal telescopic arm and the horizontal elastic arm are parallel and both extend along the radial direction of the second adjusting flange. The horizontal telescopic arms of the first telescopic frame body and the second telescopic frame body extend along the same straight line.

7. The arrangement rack according to claim 6, characterized in that, The horizontal elastic arm includes a first fixing member fixed to the fixed arm, a second fixing member for connecting with the ship model, and an elastic member with one end fixedly connected to the first fixing member and the other end fixedly connected to the second fixing member. The elastic member can deform in the horizontal and vertical directions.

8. The arrangement rack according to claim 1, characterized in that, The second bracket includes a first frame body and a second frame body. The first frame body and the second frame body are symmetric about the plane A where the first bracket is located. The second bracket further includes a horizontal guide rail and two measurement modules that can move along the horizontal guide rail and be fixed. The two ends of the horizontal guide rail are respectively connected to the first frame body and the second frame body in one-to-one correspondence.

9. The layout rack according to claim 1, characterized in that, The first adjusting flange is provided with two connecting frames. The two connecting frames are located in a plane C passing through the axis of the first adjusting flange and are symmetric about a plane D passing through the axis of the first adjusting flange. The plane D is perpendicular to the plane C. Each connecting frame is provided with a wedge-shaped clamp. The wedge-shaped clamp has a connecting opening facing horizontally outwards, and the opening directions of the wedge-shaped clamps of the two connecting frames are opposite.

10. The layout rack according to claim 9, characterized in that, The connecting frame includes a fixed connecting arm extending upwards from the second adjusting flange and a telescopic connecting arm extending radially outwards from the fixed connecting arm parallel to the second adjusting flange. The telescopic connecting arm can be telescoped and positioned, and the wedge-shaped clamp is fixed to the end of the telescopic connecting arm.

Images