A wave angle adjustment device and testing system for scaled-down marine engineering model testing

Abstract

A wave angle adjustment device for scaled-down model testing in marine engineering includes a rotating platform for supporting the test model and a drive mechanism for driving the rotating platform to rotate. Multiple model anchor points, evenly distributed along the circumference, are fixedly installed on the upper surface of the rotating platform. These anchor points are used to secure the test model to the rotating platform via fixing cables. The drive mechanism is located below the rotating platform and includes a drive motor and a transmission assembly for connecting the drive motor to the rotating platform. The drive motor drives the rotating platform to rotate via the transmission assembly to change the wave angle of the test model. This invention provides a wave angle adjustment device and testing system for scaled-down model testing in marine engineering, which can easily and quickly adjust the wave angle of the test model without requiring manual entry into the water tank or pre-fabrication of multiple test models, thus significantly improving testing efficiency and safety.

Description

Technical Field

[0001] This invention relates to the field of marine engineering scale model testing technology, specifically a wave angle adjustment device and testing system for marine engineering scale model testing. Background Technology

[0002] With the rapid development of global marine engineering and hydraulic engineering, the stability of structures in complex water flow and wave environments has become a key issue in engineering design. Research and development in related engineering fields relies on scaled-down model experiments in large laboratory tanks to reproduce water loads and verify the structural performance, such as stress and motion response. The accuracy of experimental data directly affects engineering safety and cost control.

[0003] In laboratory tank experiments, adjusting the wave-facing direction of the model is a crucial step in simulating multidirectional water flow and wave scenarios. Traditional methods have significant limitations: manually moving the model usually requires emptying the tank and having personnel enter the slippery area to operate, which is not only time-consuming but also prone to deviations in the wave-facing angle due to visual alignment; fixing multiple sets of models can avoid frequent adjustments, but the data comparability is poor due to model manufacturing errors, and it also increases material costs; the upper robotic arm adjustment method is limited by load capacity and is difficult to apply to heavy models, and the movement of the robotic arm may disturb the water surface, affecting wave morphology and thus reducing the reliability of force measurement data.

[0004] As the requirements for the precision of flume experiments in marine engineering continue to increase, the control accuracy of the wave angle has a significant impact on the structural response. In projects such as deep-sea floating foundations and estuary regulation, the direction of water flow is complex and variable. Experiments not only need to achieve static angle switching, but also face the need for dynamic direction change simulation. Traditional solutions are difficult to meet the requirements of such refined experiments.

[0005] In terms of experimental efficiency and safety, the existing solutions also show shortcomings. Engineering project cycles are generally tight, and laboratories need to complete multiple sets of experiments with different wave angles in a short period of time. Traditional adjustment methods involve drainage, water injection, and other processes, which takes a long time overall. At the same time, there are safety risks for personnel entering the water tank to operate, and repeated drainage and water injection also consume water resources and electricity. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a wave angle adjustment device and testing system for scaled-down model testing in marine engineering. This device enables simple and rapid adjustment of the wave angle of the test model without requiring manual entry into the water tank or pre-manufacturing of multiple test models, thereby significantly improving testing efficiency and safety.

[0007] To achieve the above objectives, the specific solution adopted by the present invention is as follows: A wave angle adjustment device for scaled-down marine engineering model testing includes a rotating platform for supporting the test model and a drive mechanism for driving the rotating platform to rotate. Multiple model anchor points, evenly distributed along the circumference, are fixedly arranged on the upper surface of the rotating platform. These anchor points are used to fix the test model to the rotating platform via fixing cables. The drive mechanism is located below the rotating platform and includes a drive motor and a transmission assembly for connecting the drive motor to the rotating platform. The drive motor drives the rotating platform to rotate via the transmission assembly to change the wave angle of the test model.

[0008] Preferably, the transmission assembly includes a drive shaft coaxially and fixedly connected to the output shaft of the drive motor and a rotating shaft coaxially and fixedly connected to the rotating platform. A drive gear is fixedly sleeved on the drive shaft, and a driven gear is fixedly sleeved on the rotating shaft, and the driven gear meshes with the drive gear.

[0009] Preferably, the transmission assembly includes a support base, the drive shaft is rotatably connected to a first side wall of the support base, and the rotating shaft is rotatably connected to a second side wall of the support base.

[0010] Preferably, the model fixing anchor point includes a fixing block fixedly disposed on the rotating platform. A fixing ring for connecting the fixing cable is fixedly disposed on the top of the fixing block. A channel parallel to the rotating platform is opened in the middle of the fixing block. A part of the fixing cable extends into the channel to form an adjustable part. An adjustment component for pulling the adjustable part to change the tension of the fixing cable is disposed on the side wall of the fixing block.

[0011] Preferably, the adjustment assembly includes at least two mounting rods fixedly connected to the fixed block and parallel to the rotating platform. All the mounting rods are fixedly connected to a base plate. An adjustment screw is provided on the base plate. The first end of the adjustment screw faces the channel and is fixedly connected to a pull ring. The adjustable part passes through the pull ring. The second end of the adjustment screw is fixedly connected to an operating handle.

[0012] Preferably, the portion of the fixing block located above the channel has a first arc-shaped surface, and the portion of the fixing block located below the channel has a second arc-shaped surface. A portion of the fixing cable between the fixing ring and the adjustable part is attached to the first arc-shaped surface.

[0013] Preferably, a connecting ring is fixedly connected to the bottom of the fixing block, and the connecting ring is fixedly connected to the rotating platform by a plurality of fixing bolts.

[0014] Preferably, the rotating platform includes a support plate and a base plate arranged vertically, with a distance between the support plate and the base plate. The support plate is used to support the test model. The middle part of the base plate is rotatably connected to the middle part of the support plate through a universal joint. The base plate is also provided with multiple hydraulic units. The output end of the hydraulic units faces the support plate and is connected to the support plate through a connecting rope.

[0015] Preferably, a water storage tank is fixedly installed on the base plate, and the water storage tank is connected to the hydraulic unit through a delivery pipe.

[0016] A test system for scaled-down model testing in marine engineering includes a test tank, a test model, and a wave angle adjustment device for supporting the test model, wherein the wave angle adjustment device is configured as described above.

[0017] The wave angle adjustment device of this invention supports the test model through a rotating platform and drives the rotating platform to rotate through a drive mechanism. It can easily and quickly adjust the wave angle of the test model without the need for manual operation in the water tank or the need to pre-manufacture multiple test models, which can greatly improve the efficiency and safety of the test. This invention uses multiple model fixing anchor points and fixing cables to fix the test model, which can be adapted to test models with different structures, making it more versatile. Furthermore, by adjusting the tension of the fixing cables, the test model can be fixed in the middle of the rotating platform, ensuring the accuracy of the wave angle adjustment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the experimental system of the present invention; Figure 2 This is a schematic diagram of the overall structure of the wave angle adjustment device of the present invention; Figure 3 This is a schematic diagram of the drive mechanism; Figure 4 This is a structural diagram of the model's fixed anchor points; Figure 5 This is a schematic diagram of the rotating platform.

[0020] Reference numerals: 1-Test water tank, 2-Wave angle adjustment device, 3-Rotating platform, 4-Model fixing anchor point, 5-Fixing cable, 6-Drive mechanism, 7-Test model, 8-Rotating shaft, 9-Driven gear, 10-Drive shaft, 11-Driving gear, 12-Drive motor, 13-Support base, 14-Fixing block, 15-Fixing ring, 16-First arc-shaped surface, 17-Channel, 18-Second arc-shaped surface, 19-Connecting ring, 20-Fixing bolt, 21-Mounting rod, 22-Pull ring, 23-Adjusting screw, 24-Base plate, 25-Operating handle, 26-Bearing plate, 27-Universal joint, 28-Base plate, 29-Water storage tank, 30-Conveying pipe, 31-Hydraulic unit, 32-Connecting rope. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figures 1 to 3 As shown, the present invention first provides a wave angle adjustment device for marine engineering scaled-down model testing, including a rotating platform 3 for supporting the test model 7 and a drive mechanism 6 for driving the rotating platform 3 to rotate. The upper surface of the rotating platform 3 is fixedly provided with a plurality of model fixing anchor points 4 evenly distributed along the circumference. The model fixing anchor points 4 are used to fix the test model 7 on the rotating platform 3 by fixing cables 5. The drive mechanism 6 is located below the rotating platform 3. The drive mechanism 6 includes a drive motor 12 and a transmission component for connecting the drive motor 12 and the rotating platform 3. The drive motor 12 drives the rotating platform 3 to rotate through the transmission component to change the wave angle of the test model 7.

[0023] When conducting scaled-down model tests in marine engineering using the wave angle adjustment device of the present invention, the test model 7 is first placed in the middle of the rotating platform 3. Then, multiple fixed cables 5 are used to connect multiple different positions of the test model 7 to the model fixing anchor points 4. By adjusting the tension of the fixed cables 5, the position and stability of the test model 7 can be adjusted to ensure that the wave angle of the test model 7 can be adjusted smoothly as required. After the test begins, the rotating platform 3 is driven to rotate by the drive mechanism 6. Specifically, the drive motor 12 drives the rotating platform 3 to rotate through the transmission component. During the rotation of the rotating platform 3, the test model 7 rotates synchronously, thereby changing the direction and angle of the test model 7 and achieving the effect of adjusting the wave angle of the test model 7.

[0024] The wave angle adjustment device of the present invention supports the test model 7 through a rotating platform 3 and drives the rotating platform 3 to rotate through a drive mechanism 6. It can easily and quickly adjust the wave angle of the test model 7 without the need for manual operation in the water tank or the need to pre-manufacture multiple test models 7, which can greatly improve the efficiency and safety of the test. The present invention uses multiple model fixing anchor points 4 and fixing cables 5 to fix the test model 7, which can adapt to test models 7 with different structures, making it more versatile. Furthermore, by adjusting the tension of the fixing cables 5, the test model 7 can be fixed in the middle of the rotating platform 3, ensuring the accuracy of the wave angle adjustment.

[0025] The specific structure of the transmission assembly is as follows: The transmission assembly includes a drive shaft 10 coaxially fixedly connected to the output shaft of the drive motor 12 and a rotating shaft 8 coaxially fixedly connected to the rotating platform 3. A driving gear 11 is fixedly sleeved on the drive shaft 10, and a driven gear 9 is fixedly sleeved on the rotating shaft 8, with the driven gear 9 meshing with the driving gear 11. During the scaled-down model test, the drive motor 12 drives the drive shaft 19 to rotate, which in turn drives the driving gear 11 to rotate synchronously. Since the driving gear 11 meshes with the driven gear 9, the rotation of the driving gear 11 can drive the driven gear 9 to rotate synchronously, which in turn drives the rotating shaft 8 to rotate. Finally, the rotating shaft 8 drives the rotating platform 3 and the test model 7 to rotate synchronously, thereby changing the wave angle of the test model 7. This transmission assembly has a simple structure and is easy to assemble.

[0026] Furthermore, the transmission assembly includes a support base 13, with the drive shaft 10 rotatably connected to the first side wall of the support base 13, and the rotating shaft 8 rotatably connected to the second side wall of the support base 13. Additionally, the drive motor 12 and the transmission assembly can be housed in a closed enclosure, with only the rotating shaft 8 extending upwards through the enclosure and connecting to the rotating platform 3. The enclosure protects the drive motor 12 and the transmission assembly from corrosion by the test water. At the point where the rotating shaft 8 extends through the enclosure, a dynamic sealing device can be used for sealing, such as a double-lip dust seal or a lip-shaped dynamic seal. Alternatively, conventional devices such as waterproof bearings can be used to support the rotating shaft 8, ensuring its smooth rotation.

[0027] like Figure 4As shown, the specific structure of the model fixing anchor point 4 is as follows: The model fixing anchor point 4 includes a fixing block 14 fixedly mounted on the rotating platform 3. A fixing ring 15 for connecting the fixing cable 5 is fixedly mounted on the top of the fixing block 14. A channel 17 parallel to the rotating platform 3 is opened in the middle of the fixing block 14. A part of the fixing cable 5 extends into the channel 17 to form an adjustable part. An adjustment component for pulling the adjustable part to change the tension of the fixing cable 5 is provided on the side wall of the fixing block 14. When fixing the test model 7 on the rotating platform 3, the test model 7 is first placed on the rotating platform 3, and then the movable end of the fixing cable 5 is connected to the test model 7, while the fixed end of the fixing cable 5 is wrapped and fixed on the fixing ring 15. Correspondingly, metal rings can be fixed at the corners of the test model 7 to connect the fixing cable 5. Subsequently, the position of the adjustable part of the fixing cable 5 in the channel 17 is changed using the adjustment component, thereby changing the tension of the fixing cable 5 and adjusting the total length of the portion of the fixing cable 5 located between the model fixing anchor point 4 and the test model 7. The change in the tension of the fixing cable 5 can pull the test model 7 to move slightly. Multiple fixing cables 5 work together to precisely adjust the position of the test model 7 to ensure that the test model 7 is located in the center of the rotating platform 3, thereby ensuring that the wave angle of the test model 7 can be adjusted to the required angle during the rotation of the rotating platform 3.

[0028] Furthermore, the specific structure of the adjustment assembly is as follows: the adjustment assembly includes at least two mounting rods 21 fixedly connected to the fixing block 14 and parallel to each other with the rotating platform 3. All mounting rods 21 are fixedly connected to a base plate 24. An adjustment screw 23 is threaded through the base plate 24. The first end of the adjustment screw 23 faces the channel 17 and is fixedly connected to a pull ring 22. The adjustable part passes through the pull ring 22. The second end of the adjustment screw 23 is fixedly connected to an operating handle 25. When adjusting the tension of the fixing cable 5, the operating handle 25 is rotated to drive the adjustment screw 23 to rotate synchronously, causing the adjustment screw 23 to move axially. During the movement of the adjustment screw 23, the pull ring 22 is rotated and moved. On the one hand, the adjustable part is wound around the pull ring 22, and on the other hand, the adjustable part is pulled to move. By adjusting the length of the adjustable part in the channel 17, the tension of the fixing cable 5 can be adjusted to ensure that the test model 7 can be fixed to the center position of the rotating platform 3. This adjustment assembly only requires rotating the operating handle 25, making it simple and convenient to operate. To avoid the inability to adjust the adjustable part smoothly due to corrosion of the adjusting bolt 23, the adjusting bolt 23 can be made of non-metallic materials such as nylon.

[0029] To prevent damage caused by prolonged friction between the fixing cable 5 and the edge of the fixing block 14, a first arc-shaped surface 16 is provided on the portion of the fixing block 14 above the channel 17, and a second arc-shaped surface 18 is provided on the portion of the fixing block 14 below the channel 17. A portion of the fixing cable 5 between the fixing ring 15 and the adjustable part is attached to the first arc-shaped surface 16. By providing the first arc-shaped surface 16 and the second arc-shaped surface 18, when the fixing cable 5 contacts the fixing block 14, it will not directly contact the sharp edges, thereby protecting the fixing cable 5.

[0030] The specific fixing method of the fixing block 14 is as follows: a connecting ring 19 is fixedly connected to the bottom of the fixing block 14, and the connecting ring 19 is fixedly connected to the rotating platform 3 by multiple fixing bolts 20.

[0031] like Figure 5 To further expand the adjustment range of the wave angle of the present invention and thus fully meet different test requirements, the rotating platform 3 includes a support plate 26 and a base plate 28 arranged vertically, with a distance between them. The support plate 26 supports the test model 7, and the middle part of the base plate 28 is rotatably connected to the middle part of the support plate 26 via a universal joint 27. Multiple hydraulic units 31 are also provided on the base plate 28, with the output ends of the hydraulic units 31 facing the support plate 26 and connected to it via connecting ropes 32. Based on the specific structure of this rotating platform 3, in addition to changing the wave angle of the test model 7 by rotating the rotating platform 3, the wave angle of the test model 7 can also be changed by adjusting the pitch angle of the support plate 26. Specifically, after fixing the test model 7 and rotating the rotating platform 3, the length of each hydraulic unit 31 is adjusted. An extended hydraulic unit 31 can push the support plate 26 upwards, while a shortened hydraulic unit 31 can provide space for the movement of the support plate 26. Through the cooperation of the universal joint 27 and multiple hydraulic units 31, the pitch angle of the support plate 26 relative to the base plate 28 can be adjusted, thereby further adjusting the wave angle of the test model 7. The connecting rope 32 is used to ensure the stable connection between the hydraulic unit 31 and the support plate 26, and also to avoid affecting the movement of the support plate 26.

[0032] To facilitate adjustment of the hydraulic unit 31, a water storage tank 29 is fixedly installed on the base plate 28. The water storage tank 29 is connected to the hydraulic unit 31 via a delivery pipe 30. A bidirectional water pump is installed on the delivery pipe 30 to deliver water from the water storage tank 29 to the hydraulic unit 31 or vice versa. The specific structures of the bidirectional water pump and the hydraulic unit 31 are mature existing technologies; for example, a conventional hydraulic cylinder structure can be used, which will not be described in detail here.

[0033] like Figure 1Furthermore, the present invention provides a test system for scaled-down model testing in marine engineering, including a test tank 1, a test model 7, and a wave angle adjustment device 2 for supporting the test model 7, wherein the wave angle adjustment device 2 is configured as described above. This test system also includes test water and a simulated wave generation mechanism, which are conventional technologies in the field and will not be described in detail here.

[0034] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wave angle adjustment device for scaled-down model testing in marine engineering, characterized in that, The system includes a rotating platform (3) for supporting the test model (7) and a drive mechanism (6) for driving the rotating platform (3) to rotate. The upper surface of the rotating platform (3) is fixed with a plurality of model fixing anchor points (4) evenly distributed along the circumference. The model fixing anchor points (4) are used to fix the test model (7) on the rotating platform (3) by fixing cables (5). The drive mechanism (6) is located below the rotating platform (3). The drive mechanism (6) includes a drive motor (12) and a transmission component for connecting the drive motor (12) and the rotating platform (3). The drive motor (12) drives the rotating platform (3) to rotate through the transmission component to change the wave angle of the test model (7).

2. The wave angle adjustment device for scaled-down model testing in marine engineering as described in claim 1, characterized in that, The transmission assembly includes a drive shaft (10) coaxially fixedly connected to the output shaft of the drive motor (12) and a rotating shaft (8) coaxially fixedly connected to the rotating platform (3). A drive gear (11) is fixedly sleeved on the drive shaft (10), and a driven gear (9) is fixedly sleeved on the rotating shaft (8). The driven gear (9) meshes with the drive gear (11).

3. The wave angle adjustment device for scaled-down marine engineering model testing as described in claim 2, characterized in that, The transmission assembly includes a support base (13), the drive shaft (10) is rotatably connected to the first side wall of the support base (13), and the rotating shaft (8) is rotatably connected to the second side wall of the support base (13).

4. The wave angle adjustment device for scaled-down model testing in marine engineering as described in claim 1, characterized in that, The model fixing anchor point (4) includes a fixing block (14) fixedly installed on the rotating platform (3). A fixing ring (15) for connecting the fixing cable (5) is fixedly installed on the top of the fixing block (14). A channel (17) parallel to the rotating platform (3) is opened in the middle of the fixing block (14). A part of the fixing cable (5) extends into the channel (17) to form an adjustable part. An adjustment component for pulling the adjustable part to change the tension of the fixing cable (5) is provided on the side wall of the fixing block (14).

5. The wave angle adjustment device for scaled-down model testing in marine engineering as described in claim 4, characterized in that, The adjustment assembly includes at least two mounting rods (21) that are fixedly connected to the fixed block (14) and parallel to each other with the rotating platform (3). All the mounting rods (21) are fixedly connected to a base plate (24). An adjustment screw (23) is provided on the base plate (24). The first end of the adjustment screw (23) faces the channel (17) and is fixedly connected to a pull ring (22). The adjustable part passes through the pull ring (22). The second end of the adjustment screw (23) is fixedly connected to an operating handle (25).

6. The wave angle adjustment device for scaled-down model testing in marine engineering as described in claim 4, characterized in that, The portion of the fixing block (14) above the channel (17) is provided with a first arc-shaped surface (16), and the portion of the fixing block (14) below the channel (17) is provided with a second arc-shaped surface (18). A portion of the fixing cable (5) between the fixing ring (15) and the adjustable part is attached to the first arc-shaped surface (16).

7. The wave angle adjustment device for scaled-down model testing in marine engineering as described in claim 4, characterized in that, The bottom of the fixed block (14) is fixedly connected to a connecting ring (19), and the connecting ring (19) is fixedly connected to the rotating platform (3) by a plurality of fixing bolts (20).

8. The wave angle adjustment device for scaled-down marine engineering model testing as described in claim 1, characterized in that, The rotating platform (3) includes a support plate (26) and a base plate (28) arranged vertically, with a distance between the support plate (26) and the base plate (28). The support plate (26) is used to support the test model (7). The middle part of the base plate (28) is rotatably connected to the middle part of the support plate (26) through a universal joint (27). The base plate (28) is also provided with multiple hydraulic units (31). The output end of the hydraulic unit (31) faces the support plate (26) and is connected to the support plate (26) through a connecting rope (32).

9. The wave angle adjustment device for scaled-down model testing in marine engineering as described in claim 8, characterized in that, A water storage tank (29) is fixedly installed on the base plate (28), and the water storage tank (29) is connected to the hydraulic unit (31) through a delivery pipe (30).

10. A test system for scaled-down model testing in marine engineering, characterized in that, The test includes a test tank (1), a test model (7), and a wave angle adjustment device (2) for supporting the test model (7), wherein the wave angle adjustment device (2) is configured as the device described in any one of claims 1-9.

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