Ocean engineering rolling auxiliary test device and test method

Abstract

The invention relates to an ocean engineering rolling auxiliary test device, which comprises a mounting platform, an equipment stabilizing support leg, a rocker and a gear transmission system, and is characterized in that the equipment stabilizing support leg is provided with a base, and two sides of the base respectively extend upwards to form a support frame; the mounting platform comprises a bearing platform, and two sides of the bearing platform extend upwards to form a rolling frame respectively; the rolling frame is rotationally connected with the supporting frame through a rolling rotating shaft; the rocker and gear transmission system comprises a hand wheel and a gear transmission device, and an operator rotates the hand wheel to drive the gear transmission device to drive the rolling frame to swing around the rolling rotating shaft; an offshore hydrogen production prototype is placed on the bearing platform, the equipment stabilizing supporting legs are fixed to a ship body, and the ocean engineering rolling auxiliary test device is used for a rolling test of the offshore hydrogen production prototype.

Description

Technical Field

[0001] The present invention relates to an auxiliary device for ocean engineering, and particularly to a roll auxiliary test device for ocean engineering, belonging to the technical field of offshore tests. Background Art

[0002] In the processes of ocean engineering, ship design, and offshore equipment testing, extreme sea condition tests are an important link for verifying the reliability, structural strength, and stability of equipment. However, conducting experiments under real sea conditions is not only costly but also accompanied by problems such as ship return, experimental failure, and safety risks.

[0003] For the roll test of an offshore hydrogen production prototype, performance test verification needs to be carried out under the sloshing conditions of offshore waves. However, if the wind and waves are too large during offshore tests, the maritime administration will require the ship to return to port and will not allow offshore operations. Moreover, the ships used in the tests are usually small and often cannot withstand severe sea conditions. Summary of the Invention

[0004] The purpose of the present invention is to provide an extreme sea condition test method for a roll auxiliary test device in view of the defects in existing offshore tests and tank experiments, which can provide a method reference for the extreme sea condition verification of offshore tests and tank experiments.

[0005] In ocean engineering tank experiments, researchers usually need to test the force and motion characteristics of offshore structures (such as floating platforms, offshore wind turbines, ocean buoys, etc.) under extreme sea conditions. Due to the limited wave-making ability of tank experiments, the roll auxiliary test device can actively apply roll motion to enhance the authenticity of the experiment, thereby reducing the dependence on expensive wave-making equipment and the risk of damage to experimental facilities.

[0006] Offshore operations (such as ocean rescue, drilling platform operations, shipborne helicopter takeoff and landing, etc.) need to be carried out in complex environments. By using the roll auxiliary test device of the present invention, offshore working conditions can be simulated in a controllable environment to evaluate the safety of personnel operations and can be used to train seafarers to improve their adaptability to harsh environments.

[0007] The present invention specifically adopts the following technical solutions:

[0008] An ocean engineering roll assistance test device includes an installation platform 1, equipment stabilizing legs 2, and a rocker and gear transmission system 4. The equipment stabilizing legs 2 have a base, and each side of the base extends upward with a support frame. The installation platform 1 includes a bearing platform, and each side of the bearing platform extends upward with a roll frame. The roll frame is rotatably connected to the support frame through a roll rotation shaft 3. The rocker and gear transmission system 4 includes a handwheel and a gear transmission device. The operator drives the gear transmission device by rotating the handwheel to drive the roll frame to swing around the roll rotation shaft 3. The marine hydrogen production prototype is placed on the bearing platform, and the equipment stabilizing legs 2 are fixed on the ship hull. The ocean engineering roll assistance test device is used for the roll test of the marine hydrogen production prototype.

[0009] Preferably, it further includes an equipment locking mechanism 5. The equipment locking mechanism 5 is fixedly arranged on the support frame and is connected to the roll frame. The locking mechanism 5 is used to fix a certain roll angle before the test for the test, or to fix the experimental device to facilitate the maintenance and debugging personnel to go up for debugging.

[0010] Preferably, the equipment stabilizing legs 2 are symmetrically arranged and surround the installation platform 3.

[0011] Preferably, the roll rotation shaft 3 is arranged at a position close to the center of gravity of the ocean engineering roll assistance test device and is installed above its center of gravity.

[0012] Preferably, the equipment locking mechanism 5 includes an automatically meshing rack and a pressing bolt for providing axial friction: the rack is located above the gear set and meshes with the gear set by gravity to achieve passive locking of the installation platform 1; at the same time, the pressing bolt contacts the surface of the equipment roll rotation shaft 3 to enhance the static constraint between the roll rotation shaft and the leg through friction.

[0013] Furthermore, the rocker and gear transmission system 4 adopts a mechanical drive structure of one of manual, hydraulic, and pneumatic.

[0014] A test method for an ocean engineering roll assistance test device uses the above-mentioned ocean engineering roll assistance test device, adopts a mechanical drive structure to rotate the test equipment around the equipment roll rotation shaft to a set roll angle, and is locked by the equipment locking device after the target angle, so as to complete the simulation of extreme sea conditions and stability testing.

[0015] Furthermore, the ocean engineering roll assistance test device is fixedly arranged inside the container of the seagoing ship.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1) Compared with the prior art, by integrating a roll assist test device in the offshore test environment and the tank experiment system, the present invention constructs a high-precision and controllable extreme sea condition simulation method, effectively making up for the technical defect that traditional experiments are difficult to reproduce extreme working conditions under stable sea conditions.

[0018] 2) By precisely regulating the roll angle and dynamic response characteristics, this device provides an efficient and repeatable experimental means for the stability analysis of ships, the evaluation of the wave resistance performance of ocean structures, and the anti-wave and anti-wind ability test in complex marine environments.

[0019] 3) Its application not only reduces the safety risks and economic costs of sea trials, but also reduces the dependence on large wave-making equipment and deep-water experimental facilities, expands the applicable range of tank experiments in extreme sea condition tests, and has important theoretical value and engineering guiding significance for improving the accuracy of ocean engineering tests, optimizing test methods, and promoting the development of an efficient experimental system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the roll assist test device for ocean engineering of the present invention;

[0021] Figure 2 is another schematic diagram of the roll assist test device for ocean engineering of the present invention;

[0022] Figure 3 is a working schematic diagram of the roll assist test device for ocean engineering, where (a) is a schematic diagram of a 30° right tilt and (b) is a schematic diagram of a 30° left tilt.

[0023] In the figure, 1. installation platform, 2. equipment stable support leg, 3. roll rotation shaft, 4. rocker and gear transmission system, 5. equipment locking mechanism. DETAILED DESCRIPTION OF THE INVENTION

[0024] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0025] The present invention will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those of ordinary skill in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0026] See Figures 1 - 3 , the present invention provides a roll assist test device for simulating the roll motion of ships and ocean engineering equipment under extreme sea conditions to improve the safety and controllability of the test.

[0027] The device includes an installation platform 1, equipment stabilizing legs 2, an equipment roll axis 3, a rocker and gear transmission system 4, and an equipment locking mechanism 5, etc.

[0028] Among them, the roll axis 3 is arranged above the center of gravity of the test equipment, close to the center of gravity position, optimizing the moment of inertia distribution, reducing the torque input required for roll angle control, thereby improving the stability and accuracy of the movement.

[0029] The rocker and gear transmission system 4 adopts a high-precision gear meshing mechanism, combined with a hydraulic or servo drive unit, to achieve stable low-speed roll motion control.

[0030] The equipment locking device 5 adopts a combination of friction braking and gear interlocking to ensure that the test equipment is stably fixed at the set roll angle, preventing angle drift or displacement, thereby ensuring the repeatability of experimental conditions and the accuracy of data. This device can accurately simulate extreme sea conditions in the experimental environment, and is widely applicable to ship design optimization, ocean structure stability analysis, and offshore equipment testing, providing an efficient and reliable test platform for related research and engineering applications. The locking mechanism 5 can accurately fix the equipment at a specific roll angle, ensuring the repeatability of experimental conditions and the stability of data, thereby providing a real-like sea condition simulation environment.

[0031] The rocker and gear transmission system 4 can use hydraulic drive control technology to achieve stable low-speed transmission and precise roll angle adjustment through a high-precision hydraulic motor. The hydraulic motor has the advantages of stable torque output, fast dynamic response, and strong anti-shock ability, ensuring that the system can maintain uniform operation under different load conditions, effectively reducing the impact and vibration during the transmission process. In addition, this hydraulic drive system can accurately control the roll angle through a proportional control valve and a closed-loop feedback adjustment mechanism, achieving high-resolution angle adjustment, improving the dynamic stability and control accuracy of the test device, and being applicable to high-precision attitude simulation in complex sea condition environments.

[0032] The friction braking mechanism provides dynamic locking ability by using a controllable frictional torque to achieve fast response and precise angle holding, while the gear meshing system provides additional mechanical rigid constraints through a high-strength tooth profile interlocking mechanism to prevent the equipment from occurring angle deviation or structural displacement due to external disturbances or inertial forces during the test. This composite locking scheme combines high reliability and high precision, effectively improving the steady-state holding ability of the device in extreme sea condition simulation tests, and ensuring the safety and data consistency of the test process.

[0033] The device simulates extreme sea conditions under experimental conditions by precisely controlling the roll angle, and evaluates the dynamic response characteristics of the test equipment in a harsh environment.

[0034] Figure 3The schematic diagram of the working principle of the roll assist test device is shown. When the device is in the unlocked state, the roll motion can be driven by applying a clockwise or counterclockwise rotational force to the rocker. This motion is amplified and transmitted by a high-precision gear set with a transmission ratio of 1:200 to ensure the stable and efficient transmission of the rotational torque to the installation platform of the large test equipment, thereby driving the test equipment to achieve a controllable rolling motion. After reaching the preset rolling angle, the device adopts a dual locking mechanism to fix the angle: First, the rack is precisely meshed with the gear set to form a mechanical constraint to maintain angle stability; subsequently, by tightening the friction bolts, the static locking ability of the system is enhanced to further suppress angle deviation, ensuring that the experimental equipment can maintain a high-precision attitude fixation under extreme working conditions.

[0035] The high transmission ratio design of this system not only reduces the driving force required for operation but also improves the accuracy and stability of the rolling angle adjustment, making it suitable for application scenarios such as ocean engineering, hydrodynamic experiments, and ship stability tests.

[0036] The above are the preferred embodiments of the present invention. Those of ordinary skill in the art can also make various transformations or improvements based on this. Without departing from the general concept of the present invention, these transformations or improvements should all fall within the scope of protection required by the present invention.

Claims

1. An ocean engineering roll-assist test device, characterized in that: It includes an installation platform (1), equipment stabilizing legs (2), a rocker and a gear transmission system (4). The equipment stabilizing legs (2) have a base, and a support frame extends upward on each side of the base; The installation platform (1) includes a load-bearing platform, and a roll frame extends upward on each side of the load-bearing platform; the roll frame is rotatably connected to the support frame through a roll rotation shaft (3); The rocker and gear transmission system (4) includes a handwheel and a gear transmission device. The operator drives the gear transmission device by rotating the handwheel to drive the roll frame to swing around the roll rotation shaft (3); The offshore hydrogen production prototype is placed on the load-bearing platform, the equipment stabilizing legs (2) are fixed on the hull, and the ocean engineering roll-assist test device is used for the roll test of the offshore hydrogen production prototype.

2. The roll assist test device for ocean engineering according to claim 1, characterized in that: It further includes an equipment locking mechanism (5). The equipment locking mechanism (5) is fixedly arranged on the support frame and is connected to the roll frame; the locking mechanism (5) is used to fix a certain roll angle before the test for the test, or to fix the experimental device to facilitate the maintenance and debugging personnel to go up for debugging.

3. The ocean engineering roll assistance test device according to claim 1, wherein: The equipment stabilizing legs (2) are symmetrically arranged and surround the installation platform (3).

4. The ocean engineering roll assistance test device according to claim 1, characterized in that: The roll rotation shaft (3) is arranged at a position close to the center of gravity of the ocean engineering roll-assist test device and is installed above its center of gravity.

5. The ocean engineering roll assist test device according to claim 1, characterized in that: The equipment locking mechanism (5) includes an automatically meshing rack and a pressing bolt for providing axial friction: the rack is located above the gear set and meshes with the gear set by gravity to achieve passive locking of the installation platform (1); at the same time, the pressing bolt contacts the surface of the equipment roll rotation shaft (3), and enhances the static constraint between the roll rotation shaft and the legs through friction.

6. The marine engineering roll assist test device according to any one of claims 1-5, characterized in that: The rocker and gear transmission system (4) adopts a mechanical drive structure of one of manual, hydraulic, and pneumatic.

7. A test method for a roll assistance test device of ocean engineering, characterized in that: Using the ocean engineering roll-assist test device described in claim 5, a mechanical drive structure is used to rotate the test equipment around the equipment roll rotation shaft to a set roll angle, and the locking is achieved by the equipment locking device after the target angle, so as to complete the simulation of extreme sea conditions and stability testing.

8. The test method of the roll assistance test device for ocean engineering according to claim 7, characterized in that: The ocean engineering roll-assist test device is fixedly arranged inside a container on a seagoing ship.

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