Device and method for floating body release test

Abstract

The present invention discloses a device and method for a floating body release test, belonging to the field of floating body test technology. The device includes a towing mechanism and a test bench mechanism installed at the bottom of the towing mechanism; the test bench mechanism includes a fixing assembly for fixing the floating body model and an angle adjustment assembly for adjusting the angle of the floating body model; the angle adjustment assembly includes an X-direction base plate and a Y-direction base plate, one end of the X-direction base plate is movably connected to the bottom of the towing mechanism, and the other end is sleeved on the X-direction angle adjustment threaded rod, and the X-direction angle adjustment threaded rod is movably connected to the bottom of the towing mechanism; one end of the Y-direction base plate is movably connected to the X-direction base plate, and the other end is sleeved on the Y-direction angle adjustment threaded rod, and the Y-direction angle adjustment threaded rod is movably connected to the X-direction base plate. Through the towing mechanism and the angle adjustment assembly, the present invention allows the floating body model to be released after moving in different postures in the water, so as to study the hydrodynamic performance of the floating body model and provide support for the research and practice of underwater equipment.

Description

Technical Field

[0001] The present invention belongs to the technical field of floating body test measurement, and more specifically, relates to a device and method for floating body release test. Background Art

[0002] The free ascent of an underwater floating object under its own buoyancy is influenced by factors such as the object's weight distribution, initial attitude, water velocity, and direction. This is particularly true for floating objects like underwater vehicles and escape pods, which often have surrounding boundary conditions, such as other vehicles and hulls. The coupling between varying initial attitudes and water flow directions and these boundary conditions complicates the study of the floating object's ascent. However, research on its buoyancy performance is crucial, even impacting its operational safety.

[0003] At present, most of the research on the release and buoyancy of underwater floating bodies is based on numerical simulation calculations. However, due to the complexity of fluid flow, many fundamental problems cannot be described and solved by theoretical methods. Numerical simulation can obtain certain qualitative laws, but for specific and accurate quantitative research, it is more reasonable to use model experiments.

[0004] Therefore, when conditions permit, using experimental methods to study the hydrodynamic characteristics of the model underwater release can provide reliable technical support for its early design work. Model testing requires simulating both the external environment of the floating model during operation and the release process. Therefore, it is necessary to provide a suitable device to conduct scientific and reasonable research on the release performance of the floating body. Summary of the Invention

[0005] The purpose of the present invention is to provide a device and method for floating body release testing. Through a towing mechanism and an angle adjustment component, a floating body model can be released after moving in different postures in the water to study the hydrodynamic performance of the floating body model and provide a basis for the research and design of underwater equipment.

[0006] To achieve the above-mentioned object, the present invention provides a device for a floating body release test, comprising a towing mechanism and a test bench mechanism installed at the bottom of the towing mechanism; the test bench mechanism comprises a fixing assembly for fixing a floating body model and an angle adjustment assembly for adjusting the angle of the floating body model;

[0007] The angle adjustment assembly includes an X-direction base plate, a Y-direction base plate, an X-direction angle adjustment threaded rod, and a Y-direction angle adjustment threaded rod. One end of the X-direction base plate is movably connected to the bottom of the dragging mechanism, and the other end is sleeved on the X-direction angle adjustment threaded rod. One end of the X-direction angle adjustment threaded rod is movably connected to the bottom of the dragging mechanism.

[0008] One end of the Y-direction base plate is movably connected to the X-direction base plate, and the other end is sleeved on the Y-direction angle adjustment threaded rod and movably connected to the X-direction base plate through the Y-direction angle adjustment threaded rod;

[0009] The fixing component is arranged on the Y-direction substrate.

[0010] The test bench mechanism is used to fix the floating model and immerse it in water, and can release the floating model. The towing mechanism is used to drive the test bench mechanism and the floating model to move in the water.

[0011] Furthermore, the angle between the straight line where the two connection points of the X-direction substrate and the bottom of the dragging mechanism are located and the straight line where the two connection points of the Y-direction substrate on the X-direction substrate are located is 1-90°, preferably 90°.

[0012] Furthermore, a first articulated base and a second articulated base are provided at the bottom of the dragging mechanism, and one end of the X-direction base is hinged to the first articulated base; the second articulated base is provided with a rotating base hinged to it, and the rotating base is provided with a blind hole, and the X-direction angle adjustment threaded rod is sleeved in the blind hole, and the X-direction angle adjustment threaded rod is rotated to adjust the lifting and lowering of the X-direction baseboard on the X-direction angle adjustment threaded rod.

[0013] Furthermore, a third hinged base and a fourth hinged base are provided above the X-direction substrate, and one end of the Y-direction substrate is hinged to the third hinged base; the fourth hinged base is provided with a rotating base hinged to it, and the rotating base is provided with a blind hole, and the Y-direction angle adjustment threaded rod is sleeved in the blind hole, and the Y-direction angle adjustment threaded rod is rotated to adjust the lifting and lowering of the Y-direction substrate on the Y-direction angle adjustment threaded rod.

[0014] Furthermore, the X-axis angle adjustment threaded rod and the Y-axis angle adjustment threaded rod are respectively fixed with angle adjustment dials, which are used to rotate the adjustment dials to drive the X-axis angle adjustment threaded rod and the Y-axis angle adjustment threaded rod to rotate.

[0015] Furthermore, the tops of the X-direction angle adjustment threaded rod and the Y-direction angle adjustment threaded rod are respectively provided with limiting elements for limiting the upward displacement of the X-direction substrate and the Y-direction substrate.

[0016] Furthermore, the towing mechanism includes a trailer frame and a mounting frame fixed below the trailer frame, and the test bench mechanism is installed at the bottom of the mounting frame.

[0017] Furthermore, the mounting frame includes four vertically downward suspension rods, the bottoms of two adjacent suspension rods are fixedly connected by a connecting rod, and the test bench mechanism is installed on the connecting rod.

[0018] Furthermore, the trailer frame is provided with rollers.

[0019] The present invention also provides a floating body release test method, using any of the above-mentioned apparatuses for floating body release tests, comprising: fixing a floating body model on a test bench mechanism, adjusting an X-direction base plate and a Y-direction base plate to specified angles, and placing the floating body model together with the test bench mechanism in water;

[0020] The floating body model is driven to move at a preset speed by a towing mechanism, and then the floating body model is released to test the parameters of the floating body model during the floating process.

[0021] Furthermore, a monitoring sensor is installed inside the floating body model to monitor the floating process of the floating body model. The monitoring sensor includes one or more of a displacement sensor, a gravity sensor, a speed sensor, and a posture sensor.

[0022] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects:

[0023] 1. The device for floating body release test provided by the present invention fixes the floating body model through a test bench mechanism, and then uses a towing mechanism to drive the movement and release action of the floating body model to realize the study of the floating performance after release. At the same time, the inclination angle of the floating body model can be adjusted by the hinged rotation of the two-angle adjustment base plate, thereby realizing the floating performance research in various scenarios, providing effective theoretical support for the design and development of underwater equipment.

[0024] 2. This invention employs two angle adjustment assemblies, one end of which is hinged to the base surface and the other end to a threaded rod. This allows the base surface to be raised and lowered on the threaded rod, tilting the surface and thus achieving angle adjustment for the floating model. This angle adjustment assembly is simple in structure, highly stable and reliable, and allows for multi-directional angle adjustment. Therefore, this invention can simulate a wider range of release scenarios and enable more comprehensive research into the buoyancy performance of floating models.

[0025] 3. The test method for floating body release provided by the present invention is easy to operate and has high reliability in measurement results, providing an effective way to simulate the model release process under different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the overall structure of the device for floating body release test provided by the present invention;

[0027] Figure 2 for Figure 1 The main view;

[0028] Figure 3A schematic diagram of the partial structure of the device for floating body release test provided by the present invention;

[0029] Figure 4 for Figure 3 The main view;

[0030] Figure 5 A schematic diagram of a partial structure of the device for floating body release test provided by the present invention from another angle;

[0031] Figure 6 for Figure 5 main view.

[0032] Throughout the drawings, the same reference numerals are used to denote the same elements or structures, wherein:

[0033] 100- towing mechanism; 101- trailer frame; 102- roller; 103- mounting frame; 1031- boom; 1032- connecting rod; 104- track; 200- test bench mechanism; 210- X-axis angle adjustment assembly; 211- X-axis base plate; 212- X-axis angle adjustment threaded rod; 213- X-axis angle adjustment rod hinge; 214- X-axis base plate hinge; 215- X-axis angle adjustment turntable; 220- Y-axis angle adjustment assembly; 221- Y-axis base plate; 222- Y-axis angle adjustment threaded rod; 223- Y-axis angle adjustment rod hinge; 224- Y-axis base plate hinge; 225- Y-axis angle adjustment turntable; 230- fixing assembly; 300- pool water surface; 400- floating body model. DETAILED DESCRIPTION

[0034] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to illustrate the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0035] See also Figure 1-6 The present invention provides an apparatus for floating body release testing, comprising a towing mechanism 100 and a test bench mechanism 200 mounted on the bottom of the towing mechanism 100. The test bench mechanism 200 includes a fixing assembly 230 for fixing a floating body model 400 and angle adjustment assemblies (X-axis angle adjustment assembly 210 and Y-axis angle adjustment assembly 220) for adjusting the angle of the floating body model 400. This arrangement allows the floating body model 400 to follow the towing mechanism 100 underwater at different inclination angles and then be released. This facilitates research on the buoyancy performance of various floating body models 400 and provides theoretical support for the research and design of underwater equipment.

[0036] Among them, the X-direction angle adjustment component 210 includes an X-direction base plate 211, one end of the X-direction base plate 211 is movably connected to the bottom of the dragging mechanism 100, and the other end is sleeved on the X-direction angle adjustment threaded rod 212, and the X-direction angle adjustment threaded rod 212 is movably connected to the bottom of the dragging mechanism 100; the Y-direction angle adjustment component 220 includes a Y-direction base plate 221, one end of the Y-direction base plate 221 is movably connected to the X-direction base plate 211, and the other end is sleeved on the Y-direction angle adjustment threaded rod 222, and the Y-direction angle adjustment threaded rod 222 is movably connected to the X-direction base plate 211; the fixing component 230 is arranged on the Y-direction base plate 221. With such a configuration, one end of the X-direction base plate 211 is fixed and rotatable, and the other end can be pushed or pulled down along the X-direction angle adjustment threaded rod 212, so that the X-direction base plate 211 is tilted at different angles and drives the Y-direction base plate 221 above it to tilt synchronously; one end of the Y-direction base plate 221 is also fixed and rotatable, and the other end can be pushed or pulled down along the Y-direction angle adjustment threaded rod 222, so that the Y-direction base plate 221 is tilted at different angles, and then drives the floating body model 400 above the Y-direction base plate 221 to tilt; thereby, all-round angle adjustment of the floating body model 400 is achieved. Therefore, the present invention can simulate more floating body release scenarios and achieve more comprehensive buoyancy performance research of the floating body model 400.

[0037] The towing mechanism 100 of the present invention is used to achieve uniform speed travel of the device on the towing pool track, providing a power source and speed input for the test; the test bench mechanism 200 is used to place the test bench in the pool at the lower end of the trailer, allowing the test bench to follow the trailer system for uniform motion in the pool at different flow angles. At the same time, the inclination angles of the X-direction base plate 211 and the Y-direction base plate 221 on the test bench can be adjusted to simulate the initial X-direction and Y-direction inclination angles of the floating model 400; the fixing assembly 230 is used to install and fix the floating model 400 and complete locking or releasing operations as required during the test.

[0038] Specifically, the line connecting the two connection points of the X-direction base plate 211 to the bottom of the towing mechanism 100 is not parallel to the line connecting the two connection points of the Y-direction base plate 221 on the X-direction base plate 211. The angle between them can be 1 to 90 degrees, preferably perpendicular. This arrangement can increase the versatility of the angle adjustment of the floating model 400.

[0039] The towing mechanism 100 comprises a trailer frame 101 and a mounting frame 103 secured below the trailer frame 101. The test bench mechanism 200 is mounted on the bottom of the mounting frame 103. During a release test, the towing mechanism 100 is positioned above the water surface, while the test bench mechanism 200 on the mounting frame 103 is submerged in the water. The towing mechanism 100 can move the test bench mechanism 200 through the water before release. To facilitate adjustment of the submerged depth of the test bench mechanism 200, the mounting frame 103 can be designed with a height that is tailored to the actual situation, or it can be retractable to accommodate varying depths.

[0040] See also Figure 3 The mounting frame 103 includes four vertically downward-pointing booms 1031, the tops of which are fixed to the trailer frame 101. The bottoms of two adjacent booms 1031 are fixedly connected by connecting rods 1032, and the test bench mechanism 200 is mounted on the connecting rods 1032. The booms 1031 are similar to streamlined rapiers. This configuration does not stir up excessive water flow, thereby reducing the impact on test results and improving test accuracy.

[0041] Specifically, rollers 102 are installed at the bottom of the trailer frame 101. High-precision tracks 104 are also installed on the banks of the water tank, allowing the rollers 101 to move along the tracks, improving stability. The trailer frame 101, rollers 102, and tracks 104 together serve as a power unit, providing propulsion for the floating model 400. Electronically controlled adjustments enable the model to maintain a constant speed on the tracks 104.

[0042] The bottom of the towing mechanism 100 is provided with a first hinge base and a second hinge base, which are used to install the X-direction angle adjustment component 210. Specifically, the first hinge base and the second hinge base are installed on the bottom connecting rod 1032. One end of the X-direction base plate 211 is hinged to the first hinge base to form an X-direction base plate hinge portion 214, so that this end can rotate; the second hinge base is provided with a rotating base hinged to it to form an X-direction angle adjustment rod hinge portion 213, and the rotating base is provided with a blind hole (such as a bearing seat structure) for movably sleeveing ​​the X-direction angle adjustment threaded rod 212 in the blind hole The X-direction base plate 211 is provided with a threaded hole to be connected to the X-direction angle adjustment threaded rod 212 by a thread. With such an arrangement, the X-direction base plate 211 can be pushed or pulled down on the X-direction angle adjustment threaded rod 212 by rotating the X-direction angle adjustment threaded rod 212, and the hinge connection between the rotating base and the second hinged base makes the inclination angle of the X-direction angle adjustment threaded rod 212 variable, thereby ensuring that the position of one end of the X-direction base plate 211 remains unchanged while the other end can be raised and lowered, thereby changing the inclination angle of the X-direction base plate 211, preferably the angle in the lateral direction.

[0043] The length of the X-axis angle adjustment threaded rod 212 meets the requirements of heel angle adjustment and can be self-locked at any angle.

[0044] Similarly, a third hinged base and a fourth hinged base are provided above the X-axis base plate 211. One end of the Y-axis base plate 221 is hingedly connected to the third hinged base, forming a Y-axis base plate hinge portion 224, allowing this end to rotate. The fourth hinged base is provided with a rotating base hingedly connected thereto, forming a Y-axis angle adjustment rod hinge portion 223. The rotating base is provided with a blind hole (e.g., a bearing seat structure) for movably fitting a Y-axis angle adjustment threaded rod 222 within the blind hole. When the Y-axis angle adjustment dial 225 rotates, the threaded rod rotates, thereby driving the Y-axis base plate to move. The other end of the Y-axis base plate 221 is provided with a threaded hole for threaded connection with the Y-axis angle adjustment threaded rod 222. By rotating the Y-axis angle adjustment threaded rod 222, the Y-axis base plate 221 can be pushed or pulled downward on the Y-axis angle adjustment threaded rod 222, thereby changing the inclination angle of the Y-axis base plate 221. When the X-axis base plate 211 and the Y-axis base plate 221 are tilted in different directions, the floating model 400 can be adjusted at multiple angles. The Y-axis base plate 221 preferably adjusts the pitch angle. The length of the Y-axis angle adjustment threaded rod 222 meets the requirements for pitch angle adjustment and can self-lock at any angle.

[0045] Specifically, a retaining structure is provided on the rotating base to prevent the X-axis angle adjustment threaded rod 212 or the Y-axis angle adjustment threaded rod 222 from being dislodged from the rotating base and affecting adjustment stability. Retaining structures are also provided at the tops of the X-axis angle adjustment threaded rod 212 and the Y-axis angle adjustment threaded rod 222 to prevent the X-axis base plate 211 and the Y-axis base plate 221 from being pushed out.

[0046] The angle adjustment structure of the single hinge plus threaded rod of the present invention has high stability and reliability, simple structural design, and can better adapt to the requirements of underwater test conditions.

[0047] In particular, an X-direction angle adjustment dial 215 and a Y-direction angle adjustment dial 225 are fixed on the X-direction angle adjustment threaded rod 212 and the Y-direction angle adjustment threaded rod 222, respectively, for rotating the adjustment dial to facilitate adjusting the rotation of the X-direction angle adjustment threaded rod 212 and the Y-direction angle adjustment threaded rod 222.

[0048] In particular, the fixing assembly on the Y-direction base plate 221 can adopt various fixing structures known in the prior art, such as a clamping structure, a threaded fixing structure, a snap-on fixing structure, etc. In particular, the fixing assembly is equipped with an automatic control unit, for example, through electrical control or remote control, so that the fixing assembly can automatically open and close, so that the floating model 400 can be controlled and released on the water surface. By operating the locking floating model 400, when the trailer frame 101 drives the test bench mechanism 200 to enter the set speed, the floating model fixing assembly 230 can be operated to release the lock and release the floating model 400. At this time, the floating model 400 performs an upward movement under the action of positive buoyancy, completing the test working condition simulation.

[0049] In some specific embodiments, a memory alloy spring can be installed between the two clamping arms, with its ends connected to the two arms of the clamping arm, respectively. The positive and negative poles of the power supply are connected to the two ends of the memory alloy spring, and the size of the clamping arm head can be designed based on the floating model 400. The memory alloy spring is electrically heated to produce a memory effect, which causes the shape to recover. The contraction of the memory alloy spring pulls the clamping arm, thereby achieving the clamping and release of the floating model 400.

[0050] The present invention also provides a test method for floating body release, which uses the device for floating body release test described in any of the above items, including: fixing the floating body model 400 on the test bench mechanism 200 by locking the fixing component 230, adjusting the X-direction substrate 211 and the Y-direction substrate 221 to specified angles, and then placing the floating body model 400 together with the test bench mechanism 200 in a water pool; then, the floating body model 400 is driven to move at a preset speed by the towing mechanism 100. After the movement stabilizes, the locking of the fixing component 230 is released to release the floating body model 400, so as to test the floating process parameters of the floating body model 400.

[0051] The floating body model 400 is the experimental research object, and a model with positive buoyancy is selected.

[0052] Furthermore, a monitoring sensor may be installed inside the floating model 400 to monitor the floating process of the floating model 400 . The monitoring sensor may include one or more of a displacement sensor, a gravity sensor, a speed sensor, and a posture sensor.

[0053] To sum up, the present invention aims to address the problems that existing numerical simulation technology is more dependent on the user's experience, the calculation results are not reliable, and the release performance of the float under extreme working conditions cannot be determined by existing engineering experience or simulation. An apparatus and method for float release testing are proposed. By cooperating with a trailer platform in a towing pool, the model release process under different working conditions can be simulated. The test can more realistically restore the external environment and working process of the model release, thereby realizing the study of the release performance of underwater floats.

[0054] It will be easily understood by those skilled in the art that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for floating body release test, characterized in that: It comprises a towing mechanism and a test bench mechanism installed at the bottom of the towing mechanism; the test bench mechanism comprises a fixing component for fixing the floating model and an angle adjustment component for adjusting the angle of the floating model; The angle adjustment assembly includes an X-direction base plate, a Y-direction base plate, an X-direction angle adjustment threaded rod, and a Y-direction angle adjustment threaded rod. One end of the X-direction base plate is movably connected to the bottom of the dragging mechanism, and the other end is sleeved on the X-direction angle adjustment threaded rod. One end of the X-direction angle adjustment threaded rod is movably connected to the bottom of the dragging mechanism. One end of the Y-direction base plate is movably connected to the X-direction base plate, and the other end is sleeved on the Y-direction angle adjustment threaded rod and movably connected to the X-direction base plate through the Y-direction angle adjustment threaded rod; The fixing component is arranged on the Y-direction substrate.

2. The device for floating body release test according to claim 1, characterized in that: The angle between the straight line where the two connection points of the X-direction substrate and the bottom of the dragging mechanism are located and the straight line where the two connection points of the Y-direction substrate on the X-direction substrate are located is 90°.

3. The device for floating body release test according to claim 1, characterized in that: The bottom of the towing mechanism is provided with a first hinged base and a second hinged base, and one end of the X-direction base is hinged to the first hinged base; the second hinged base is provided with a rotating base hinged to it, and the rotating base is provided with a blind hole, and the X-direction angle adjustment threaded rod is sleeved in the blind hole. By rotating the X-direction angle adjustment threaded rod, the lifting and lowering of the X-direction baseboard on the X-direction angle adjustment threaded rod is adjusted.

4. The device for floating body release test according to claim 1, characterized in that: A third hinged base and a fourth hinged base are provided above the X-direction base, and one end of the Y-direction base is hinged to the third hinged base; the fourth hinged base is provided with a rotating base hinged thereto, and the rotating base is provided with a blind hole, and the Y-direction angle adjustment threaded rod is sleeved in the blind hole. By rotating the Y-direction angle adjustment threaded rod, the Y-direction base is adjusted to rise and fall on the Y-direction angle adjustment threaded rod.

5. The device for floating body release test according to claim 3 or 4, characterized in that: An angle adjustment dial is fixed on the X-direction angle adjustment threaded rod and the Y-direction angle adjustment threaded rod respectively, which is used to rotate the adjustment dial to drive the X-direction angle adjustment threaded rod and the Y-direction angle adjustment threaded rod to rotate.

6. The device for floating body release test according to claim 3 or 4, characterized in that: The tops of the X-direction angle adjustment threaded rod and the Y-direction angle adjustment threaded rod are respectively provided with limiting elements for limiting the upward displacement of the X-direction substrate and the Y-direction substrate.

7. The device for floating body release test according to claim 1, characterized in that: The towing mechanism includes a trailer frame and a mounting frame fixed below the trailer frame, and the test bench mechanism is installed at the bottom of the mounting frame.

8. The device for floating body release test according to claim 7, characterized in that: The mounting frame includes four vertically downward hanging rods, the bottoms of two adjacent hanging rods are fixedly connected by a connecting rod, and the test bench mechanism is installed on the connecting rod; the trailer frame is also provided with rollers.

9. A test method for releasing a floating body, characterized in that: The device for a floating body release test according to any one of claims 1 to 8 comprises: fixing a floating body model on a test bench mechanism, adjusting an X-direction base plate and a Y-direction base plate to preset angles, and placing the floating body model together with the test bench mechanism in water; The floating body model is driven to move at a preset speed by a towing mechanism, and then the floating body model is released to test the parameters of the floating body model during the floating process.

10. The floating body release test method according to claim 9, characterized in that: A monitoring sensor is installed inside the floating body model to monitor the floating process of the floating body model. The monitoring sensor includes one or more of a displacement sensor, a gravity sensor, a speed sensor, and a posture sensor.

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