Attitude control device for ultra-large floating platform laboratory model

Abstract

The invention relates to the technical field of ocean engineering tests, in particular to an ultra-large floating platform laboratory model attitude control device. The device comprises a rotary telescopic mechanism, a fixing device and a base, the rotary telescopic mechanism comprises a turbine worm mechanism, a servo electric cylinder and a servo motor; the worm and gear mechanism and the servo motor are both installed on the base, and the output end of the servo motor is connected with a worm of the worm and gear mechanism. The servo electric cylinder is installed on the wheel face of a worm wheel of the worm and gear mechanism, and the output end of the servo electric cylinder downwards penetrates through the worm wheel of the worm and gear mechanism and the base in sequence and is connected with the fixing device. Accurate adjustment of the vertical position of the experimental model can be realized through the servo electric cylinder, flexible adjustment of the horizontal angle is realized through cooperation of the worm and gear mechanism and the servo motor, the working conditions of the floating structure for coping with waves coming in different directions and different vertical postures can be accurately reproduced, and the multi-scene experimental requirements are met.

Description

Technical Field

[0001] This invention relates to the field of marine engineering testing technology, and in particular to an attitude control device for an ultra-large floating platform laboratory model. Background Technology

[0002] Very Large Floating Structures (VLFS) are a new type of large-scale, buoyancy-supported marine spatial structure, considered an environmentally friendly alternative to traditional land reclamation. Their core advantages lie in their strong adaptability to water depth and seabed topography, short construction period, mobility, modular expansion capabilities, and significantly lower impact on the marine ecological environment compared to land reclamation projects. Currently, VLFS have shown broad application prospects in areas such as floating airports and renewable energy platforms. In the hydrodynamic performance research of VLFS, adaptation to extreme marine environments, structural stability control, and the mechanisms of complex wave loads are the main research directions.

[0003] Wave tank experiments are an important tool for conducting related research. Currently, most wave tanks used in shipbuilding and ocean engineering research are rectangular in shape, with wave generators positioned on one side. These tanks can only generate two-dimensional waves propagating in a single direction, making it difficult to simulate the complex operating conditions of ultra-large floating structures dealing with waves from multiple directions. To address this problem, this invention innovatively proposes a method and experimental apparatus for adjusting the attitude of the experimental model, enabling convenient and efficient simulation of ultra-large floating structures dealing with waves from multiple directions in a two-dimensional wave tank. Summary of the Invention

[0004] In view of this, the present invention provides an attitude control device for an ultra-large floating platform laboratory model.

[0005] Therefore, the present invention provides the following technical solution: A posture control device for an ultra-large floating platform laboratory model includes a rotary telescopic mechanism, a fixing device, and a base. The rotary telescopic mechanism includes a worm gear mechanism, a servo electric cylinder, and a servo motor. The worm gear mechanism and the servo motor are both mounted on the base, and the output end of the servo motor is connected to the worm of the worm gear mechanism. The servo electric cylinder is mounted on the wheel surface of the worm of the worm gear mechanism, and its output end passes downward through the worm of the worm gear mechanism and the base, and is connected to the fixing device.

[0006] Furthermore, an installation platform is provided on one side of the base, and the rotary telescopic mechanism and servo motor are both installed on the installation platform, while an installation part is provided on the other side of the base.

[0007] Furthermore, a guide support is provided on the base below the installation platform, and the connecting end of the fixing device passes upward through the guide support and connects to the output end of the servo cylinder; the output end of the servo cylinder is connected to the fixing device through a flange coupling.

[0008] Furthermore, the fixing device includes a connecting arm and a model hanger, with the upper end of the connecting arm connected to the output end of the servo electric cylinder and the lower end of the connecting arm connected to the model hanger.

[0009] Furthermore, the top of the model hanger is provided with mounting holes, and a limiting hole is provided outside the mounting holes; the lower end of the connecting arm is provided with a mounting plate, and positioning holes are evenly distributed along its circumference; the positioning holes and the corresponding limiting holes are fixedly connected by bolts and nuts.

[0010] Furthermore, the mounting plate is provided with an inner limiting hole and an outer limiting hole along the radial direction of the mounting hole, and the mounting plate is provided with an inner positioning hole and an outer positioning hole along its radial direction. The inner positioning hole and the outer positioning hole are arranged along the circumference of the mounting plate. The inner positioning hole is fixedly connected to the corresponding inner limiting hole by bolts and nuts, and the outer positioning hole is fixedly connected to the corresponding outer limiting hole by bolts and nuts.

[0011] Furthermore, the interval between adjacent inner positioning holes is 30°; the interval between adjacent outer positioning holes is 15°.

[0012] Furthermore, it also includes a control terminal, which is mounted on the base, and the servo cylinder and servo motor are both electrically connected to the control terminal.

[0013] Furthermore, the base is mounted on the experimental site platform.

[0014] Advantages and positive effects of the present invention: This invention enables precise adjustment of the vertical position of the experimental model via a servo electric cylinder, and flexible adjustment of the horizontal angle via a worm gear mechanism in conjunction with a servo motor. It can accurately reproduce the working conditions of floating structures in response to waves from different directions and different vertical attitudes, meeting the experimental needs of multiple scenarios. Attached Figure Description

[0015] 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a front structural diagram of an attitude control device for an ultra-large floating platform laboratory model provided by the present invention.

[0017] Figure 2 This is a rear structural diagram of an attitude control device for an ultra-large floating platform laboratory model provided by the present invention.

[0018] Figure 3 This invention provides a schematic diagram of the rotating telescopic mechanism of an attitude control device for an ultra-large floating platform laboratory model.

[0019] Figure 4 This invention provides a schematic diagram of the fixing device structure for an attitude control device of an ultra-large floating platform laboratory model.

[0020] Figure 5 This invention provides a schematic diagram of the base structure of an attitude control device for an ultra-large floating platform laboratory model.

[0021] Figure 6 An exploded structural diagram of the fixing device of an attitude control device for an ultra-large floating platform laboratory model provided by the present invention.

[0022] In the diagram: 1. Rotary telescopic mechanism; 2. Worm gear mechanism; 3. Servo electric cylinder; 4. Control terminal; 5. Fixing device; 6. Connecting arm; 7. Model hanger; 8. Base; 9. Mounting part; 10. Mounting platform; 11. Guide support; 12. Terminal bracket; 13. Servo motor; 14. Flange coupling; 15. Mounting hole; 16. Inner limit hole; 17. Mounting plate; 18. Inner positioning hole; 19. Outer limit hole; 20. Outer positioning hole. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 should fall within the scope of protection of the present invention.

[0024] This invention provides an attitude control device for an ultra-large floating platform laboratory model, such as... Figure 1-2 As shown, it includes a rotating telescopic mechanism 1, a fixing device 5, and a base 8; as Figure 5 As shown, a mounting platform 10 is provided on one side of the base 8, and the rotary telescopic mechanism 1 and the servo motor 13 are both mounted on the mounting platform 10. A mounting part 9 is provided on the other side of the base 8. The base 8 is mounted on the experimental site platform via the mounting part 9.

[0025] like Figure 3As shown, the rotary telescopic mechanism 1 includes a worm gear mechanism 2, a servo cylinder 3, and a servo motor 13. Both the worm gear mechanism 2 and the servo motor 13 are mounted on the mounting platform 10 of the base 8. The output end of the servo motor 13 is connected to the worm of the worm gear mechanism 2. The housing of the servo cylinder 3 is fixedly mounted on the wheel surface of the worm gear mechanism 2 by bolts. Its output end passes downward through the worm gear mechanism 2 and the base 8 in sequence. The base 8 is provided with a guide support 11 located below the mounting platform 10. The connecting end of the fixing device 5 passes upward through the guide support 11 and is connected to the output end of the servo cylinder 3. The output end of the servo cylinder 3 is connected to the fixing device 5 through a flange coupling 14.

[0026] like Figure 4 As shown, the fixing device 5 includes a connecting arm 6 and a model hanger 7. The upper end of the connecting arm 6 is connected to the output end of the servo electric cylinder 3, and the lower end of the connecting arm 6 is connected to the model hanger 7.

[0027] like Figure 6 As shown, the top of the model hanger 7 has a mounting hole 15, and the top of the model hanger 7 has an inner limiting hole 16 and an outer limiting hole 19 radially along the mounting hole 15. The lower end of the connecting arm 6 has a mounting plate 17, and the mounting plate 17 has an inner positioning hole 18 and an outer positioning hole 20 radially along its axis. The inner positioning hole 18 and the outer positioning hole 20 are arranged circumferentially along the mounting plate 17. The inner positioning hole 18 is fixedly connected to the corresponding inner limiting hole 16 by bolts and nuts, and the outer positioning hole 20 is fixedly connected to the corresponding outer limiting hole 19 by bolts and nuts. The interval between adjacent inner positioning holes 18 is 30°; the interval between adjacent outer positioning holes 20 is 15°.

[0028] Sometimes, due to space limitations in the experimental area, there is not enough room to deploy the servo motor 13. In such cases, the angle of the experimental device will be adjusted manually. First, loosen the bolts and nuts to release the fixing constraints. Then, rotate the model hanger 7 to the target angle according to the experimental requirements. Use the correspondence between the positioning holes and the limit holes to achieve precise positioning. Finally, tighten the bolts and nuts to complete the fixation. The multi-ring positioning hole design with different intervals on the mounting plate 17 provides multiple angle options to meet the experimental angle requirements of different precision.

[0029] like Figure 1 , Figure 5 As shown, it also includes a control terminal 4. A terminal bracket 12 is provided on the base 8. The control terminal 4 is installed on the terminal bracket 12. The servo cylinder 3 and the servo motor 13 are both electrically connected to the control terminal 4.

[0030] Working principle: The control terminal 4 sends a telescopic command to the servo cylinder 3. The output end of the servo cylinder 3 drives the connecting arm 6 of the fixing device 5 to move vertically along the guide support 11 through the flange coupling 14. Since the model hanger 7 is connected to the lower end of the connecting arm 6, and the experimental model is fixed to the lower end of the model hanger 7, the vertical height of the experimental model can be precisely adjusted to simulate different drafts or vertical attitudes.

[0031] When simulating wave conditions from different directions, the control terminal 4 sends a rotation command to the servo motor 13. The servo motor 13 drives the worm of the worm gear mechanism 2 to rotate. Through the meshing transmission between the worm gear and the worm, the servo cylinder 3 mounted on the worm gear surface rotates around the central axis of the worm gear. Since the output end of the servo cylinder 3 is rigidly connected to the fixing device 5, the rotational motion is transmitted to the experimental model through the connecting arm 6 and the model hanger 7, causing the model to rotate to a specific angle on the horizontal plane, forming a preset angle with the direction of the incoming waves in the wave pool, thereby simulating the working conditions of a super-large floating platform dealing with waves from different directions.

[0032] The control terminal 4 coordinates the extension and retraction of the servo cylinder 3 and the rotation of the servo motor 13 to achieve composite attitude control of the vertical position and horizontal angle of the experimental model. This accurately reproduces the forces and motion states that the ultra-large floating platform may face in the actual marine environment in multiple directions and vertical positions, providing controllable attitude simulation conditions for related experiments.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A posture control device for an ultra-large floating platform laboratory model, characterized in that, The device includes a rotary telescopic mechanism (1), a fixing device (5), and a base (8). The rotary telescopic mechanism (1) includes a worm gear mechanism (2), a servo electric cylinder (3), and a servo motor (13). The worm gear mechanism (2) and the servo motor (13) are both mounted on the base (8), and the output end of the servo motor (13) is connected to the worm of the worm gear mechanism (2). The servo electric cylinder (3) is mounted on the wheel surface of the worm of the worm gear mechanism (2), and its output end passes through the worm of the worm gear mechanism (2) and the base (8) in sequence, and is connected to the fixing device (5).

2. The attitude control device for an ultra-large floating platform laboratory model according to claim 1, characterized in that, A mounting platform (10) is provided on one side of the base (8), and the rotating telescopic mechanism (1) and the servo motor (13) are both mounted on the mounting platform (10). A mounting part (9) is provided on the other side of the base (8).

3. The attitude control device for an ultra-large floating platform laboratory model according to claim 2, characterized in that, The base (8) is provided with a guide support (11) located below the mounting platform (10). The connecting end of the fixing device (5) passes upward through the guide support (11) and is connected to the output end of the servo cylinder (3). The output end of the servo cylinder (3) is connected to the fixing device (5) through a flange coupling (14).

4. The attitude control device for an ultra-large floating platform laboratory model according to claim 1, characterized in that, The fixing device (5) includes a connecting arm (6) and a model hanger (7). The upper end of the connecting arm (6) is connected to the output end of the servo electric cylinder (3), and the lower end of the connecting arm (6) is connected to the model hanger (7).

5. The attitude control device for an ultra-large floating platform laboratory model according to claim 4, characterized in that, The model hanger (7) has a mounting hole (15) at the top and a limiting hole (16) outside the mounting hole (15); the lower end of the connecting arm (6) has a mounting plate (17) with positioning holes (18) evenly distributed around it; the positioning holes (18) and the corresponding limiting holes (16) are fixedly connected by bolts and nuts.

6. The attitude control device for an ultra-large floating platform laboratory model according to claim 5, characterized in that, The mounting plate (17) is provided with an inner limiting hole (16) and an outer limiting hole (19) radially along the mounting hole (15). The mounting plate (17) is provided with an inner positioning hole (18) and an outer positioning hole (20) radially along its own axis. The inner positioning hole (18) and the outer positioning hole (20) are arranged along the circumference of the mounting plate (17). The inner positioning hole (18) is fixedly connected to the corresponding inner limiting hole (16) by bolts and nuts. The outer positioning hole (20) is fixedly connected to the corresponding outer limiting hole (19) by bolts and nuts.

7. The attitude control device for an ultra-large floating platform laboratory model according to claim 6, characterized in that, The interval between adjacent inner positioning holes (18) is 30°; the interval between adjacent outer positioning holes (20) is 15°.

8. The attitude control device for an ultra-large floating platform laboratory model according to claim 1, characterized in that, It also includes a control terminal (4), a terminal bracket (12) is provided on the base (8), the control terminal (4) is installed on the terminal bracket (12), and the servo electric cylinder (3) and the servo motor (13) are electrically connected to the control terminal (4).

9. The attitude control device for an ultra-large floating platform laboratory model according to claim 1, characterized in that, The base (8) is installed on the experimental site platform.

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