Horizontal inertia simulation test device

Abstract

The invention relates to a horizontal inertia simulation test device which comprises a mounting platform, a hexagonal shaft roller, a ground rail, a container bottom plate, movable inclined side equipment and an equipment locking device, the ground rail is fixed on a container bottom plate, and the hexagonal shaft roller is fixed on the mounting platform and can roll along the ground rail; the equipment locking device is of a mechanical bolt buckle structure. The movable inclined side equipment comprises a rod piece, and one end of the rod piece is fixedly connected with a hexagonal shaft of the hexagonal shaft roller; and the mounting platform is used for bearing an offshore hydrogen production prototype. The method can provide a method reference for extreme sea condition verification of a sea test and a pool experiment.

Description

Technical Field

[0001] The present invention relates to the technical field of horizontal acceleration control of offshore experimental devices, and specifically, to a horizontal inertia simulation test device and an extreme sea condition test method thereof. Background Art

[0002] In the processes of ocean engineering, ship design, and offshore equipment testing, extreme sea condition tests are an important link to verify the reliability, structural strength, and stability of equipment.

[0003] In the process of ship design and optimization, engineers need to conduct experimental verification on the sway stability and wave resistance performance of ships. Traditional methods rely on sea trials, but are restricted by factors such as weather, time, and cost.

[0004] In ocean engineering pool 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.

[0005] Offshore operations (such as ocean rescue, drilling platform operations, shipborne helicopter takeoff and landing, etc.) need to be carried out in complex environments. Summary of the Invention

[0006] Aiming at the defects in existing offshore tests and pool experiments, the purpose of the present invention is to provide an extreme sea condition test method for a horizontal inertia simulation device, which can provide a method reference for the extreme sea condition verification of offshore tests and pool experiments.

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

[0008] A horizontal inertia simulation test device, comprising an installation platform 1, hexagonal shaft rollers 2, a ground rail 4, a container bottom plate 6, a movable inclined side device 5, and a device locking device; the ground rail 4 is fixed on the container bottom plate 6, the hexagonal shaft rollers 2 are fixed on the installation platform 1 and can roll along the ground rail 4; the device locking device is a mechanical bolt buckle structure; the movable inclined side device 5 includes a rod, and one end of the rod is fixedly connected to the hexagonal shaft of the hexagonal shaft roller 2; the installation platform 1 is used to carry a prototype of offshore hydrogen production.

[0009] Preferably, the power source of the movable inclined side device 5 comes from a non-electric mechanical structure.

[0010] Furthermore, the non-electric mechanical structure is a hydraulic power device. The movable inclined side device 5 controls the sway amplitude by measuring the swing angle of the rod, and the movable inclined side device 5 realizes the amplification of the transmission ratio through a gear set.

[0011] Preferably, the mechanical bolt and buckle structure includes a plurality of anchor bolts 7. When the horizontal inertia simulation test device is in a non-operating state, the anchor bolts 7 pass through the ground rail 4 and the container bottom plate 6 and can be fixed by the bottom plate fixing nut 8; when the horizontal inertia simulation test device is in an operating state, the anchor bolts 7 and the bottom plate fixing nut 8 are removed.

[0012] Preferably, the ground rail 4 is provided with at least three positioning slots 9, corresponding to the center position of the installation platform on the track and the left and right extreme rolling positions respectively, so as to facilitate simulating the dynamic response working conditions under different rolling states during the test.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1) By integrating the horizontal inertia simulation test device in the offshore test environment and the pool experiment system, the present invention constructs a high-precision and controllable extreme sea condition simulation method, effectively making up for the technical defect that it is difficult to reproduce extreme working conditions in traditional experiments under stable sea conditions.

[0015] 2) By precisely regulating the lateral displacement and dynamic response characteristics, this device provides an efficient and repeatable experimental means for ship stability analysis, wave resistance performance evaluation of ocean structures, and anti-wave and anti-wind ability tests in complex marine environments.

[0016] 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 pool 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

[0017] Figure 1 is the front view of the horizontal inertia simulation test device;

[0018] Figure 2 is the side view of the horizontal inertia simulation test device;

[0019] Figure 3 is the working schematic diagram of the horizontal inertia simulation test device;

[0020] Figure 4 is Figure 3 the enlarged view at the lower right corner of

[0021] Figure 5 is Figure 3 the enlarged view at the lower left corner of

[0022] In the figure, 1. Installation platform, 2. Hexagonal shaft roller, 4. Ground rail, 5. Moving inclined side equipment, 6. Container bottom plate, 7. Anchor bolt, 8. Bottom plate fixing nut, 9. Positioning slot. Detailed implementation mode

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] 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 for those of ordinary skill in the art, without departing from the concept of the present invention, several changes and improvements can still be made. These all belong to the protection scope of the present invention.

[0025] The present invention provides a horizontal inertia simulation test device for simulating the horizontal movement of ships and offshore engineering equipment under extreme sea conditions to improve the safety and controllability of the test. The device includes an installation platform 1, a hexagonal shaft roller 2 for equipment movement, a bottom plate fixing system, a ground rail 4, and a moving inclined measurement device 5.

[0026] The system integrates key modules such as a high-strength load-bearing platform, an equipment pulley-rail translation system, and a composite locking mechanism, and has good structural adaptability and high-precision dynamic response control capabilities. The platform is constructed of high-strength structural materials, with both heavy-load bearing and fatigue tolerance characteristics; the bottom pulley assembly cooperates with the linear rail system to achieve low-damping smooth movement and multi-point precise positioning of the equipment in the horizontal plane; the adjustable locking mechanism provides multi-point rigid support, load balanced distribution, and local vibration damping capabilities, enhancing the structural stability and anti-interference performance of the device under sway excitation. The composite locking mechanism equipped with the device integrates a friction braking unit and a high-strength gear meshing system, realizing rapid response locking of the equipment attitude, high-precision angle holding, and structural displacement constraint during the test, effectively resisting the risk of equipment offset caused by inertial disturbance or external force impact. The overall structural design can support large-scale sway simulation, steady-state holding, and impact loading experiments, adapt to dynamic test tasks under extreme sea conditions (such as irregular waves, periodic disturbances), and provide a highly reliable and high-precision test platform basis for the anti-rolling stability evaluation and attitude control performance verification of offshore engineering equipment. This device can accurately simulate extreme sea conditions in the experimental environment, is widely applicable to ship design optimization, marine structure stability analysis, and offshore equipment testing, and provides an efficient and reliable test platform for related research and engineering applications.

[0027] The installation platform is made of high-strength structural steel or composite materials, with excellent load-bearing performance and fatigue resistance, and can meet the structural integration and operation requirements of various types of large-scale ocean engineering test equipment under different load conditions. The bottom of the platform is integrated with a mobile pulley mechanism with high load capacity, which works in coordination with the precision linear guide system preset on the surface of the test base, and can realize low-damping translation and multi-point controllable positioning adjustment of the platform in the horizontal plane. This layout not only improves the layout flexibility of the device in complex test scenarios, but also facilitates the rapid installation and conversion of different test modules. To ensure the structural integrity and response accuracy of the system during the dynamic horizontal motion simulation, the platform is equipped with an adjustable multi-point support locking device, which has the functions of rigid adjustment, load balancing distribution and local vibration damping, can significantly enhance the structural stability and anti-interference ability of the whole device under disturbance excitation, effectively suppress the base displacement, structural vibration or attitude drift caused by inertial loading during the sway process, and thus provide a solid mechanical support foundation for dynamic attitude control and precise measurement.

[0028] Figure 3 The schematic diagram of the working principle of the horizontal inertia simulation test device is shown. When the device is in the unlocked state, the sway motion can be driven by applying a clockwise or counterclockwise rotational force to the rocker. This motion is amplified and transmitted through a high-precision gear set to ensure the stable and efficient transmission of the rotational torque to the device mobile pulley assembly, thereby driving the test equipment to achieve controllable horizontal motion (the gear set is not shown in the attached drawing, but in fact the gear set is also prior art).

[0029] After reaching the preset lateral displacement, 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 the lateral displacement and ensure that the experimental equipment can maintain a high-precision attitude fixation under extreme conditions. 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 lateral displacement adjustment, and is suitable for application scenarios such as ocean engineering, hydrodynamic experiments and ship stability tests.

[0030] The device locking device adopts a composite locking structure design that combines a friction braking mechanism with a high-strength gear meshing drive system, aiming to achieve high-stability rigid fixation and dynamic holding control of the test equipment at specific lateral displacement or attitude positions. Among them, the friction braking unit uses an adjustable friction torque generating device to provide transient locking ability and support rapid response in high-frequency displacement adjustment. The gear meshing drive part adopts high-modulus and high-precision involute gear components, and realizes deep embedding between mechanical structures through a tooth shape interlocking constraint mechanism, thereby forming a strong constraint mechanical interface and effectively suppressing the instability risks such as displacement slip and locking loosening caused by external disturbances, impact loads or equipment inertia during the test. This composite locking scheme combines the flexibility of dynamic control and the stiffness of structural fixation, improves the steady-state holding ability and angle control accuracy of the device under complex working conditions, and ensures the consistency of data acquisition and the engineering safety of system operation during the test.

[0031] The device is optionally equipped with an integrated hydraulic drive control system to accurately drive the rocker assembly and its gear drive mechanism, so as to achieve low-speed smooth control and high-resolution displacement adjustment ability during the lateral attitude adjustment of the equipment. The core execution unit adopts a mobile inclined measurement device, which has high dynamic response rate, stable torque output characteristics and strong anti-impact and anti-interference ability, ensuring that the lateral drive system can still maintain uniform operation and anti-interference stability under multiple load change conditions. To improve the control accuracy and response closure of the system, the hydraulic circuit is equipped with a proportional control valve and a high-sensitivity pressure-position sensor closed-loop feedback unit, which can realize continuous variable control and real-time state monitoring of the horizontal displacement. This control strategy supports rapid approximation to the target attitude and dynamic fine-tuning of small displacements, significantly improves the resolution and repeatability of attitude simulation, and ensures the authenticity, comparability and structural response consistency of test data under simulated complex and variable sea conditions (such as irregular waves and composite periodic disturbances), meeting the experimental requirements for studying the dynamic characteristics of high-precision marine equipment.

[0032] The above are the preferred embodiments of the present invention. Those of ordinary skill in the art can also make various transformations or improvements on this basis. 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. A horizontal inertia simulation test device, characterized in that: It includes an installation platform (1), hexagonal shaft rollers (2), a ground rail (4), a container bottom plate (6), a mobile inclined side device (5), and a device locking device; The ground rail (4) is fixed on the container bottom plate (6), and the hexagonal shaft rollers (2) are fixed on the installation platform (1) and can roll along the ground rail (4); The device locking device is a mechanical bolt buckle structure; The mobile inclined side device (5) includes a rod, and one end of the rod is fixedly connected to the hexagonal shaft of the hexagonal shaft roller (2); The installation platform (1) is used to carry a prototype of hydrogen production at sea.

2. The horizontal inertia simulation test device according to claim 1, characterized in that: The power source of the mobile inclined side device (5) comes from a non-electric mechanical structure.

3. The horizontal inertia simulation test device according to claim 2, wherein: The non-electric mechanical structure is a hydraulic power device, and the mobile inclined side device (5) controls the amplitude of sway by measuring the swing angle of the rod.

4. The horizontal inertia simulation test device according to claim 1, characterized in that: The mechanical bolt buckle structure includes a plurality of anchor bolts (7). When the horizontal inertia simulation test device is in a non-working state, the anchor bolts (7) pass through the ground rail (4) and the container bottom plate (6) and can be fixed by a bottom plate fixing nut (8); when the horizontal inertia simulation test device is in a working state, the anchor bolts (7) and the bottom plate fixing nut (8) are removed.

5. The horizontal inertia simulation test device according to claim 1, characterized in that: The ground rail (4) is provided with at least three positioning slots (9), corresponding to the center position of the track and the left and right extreme sway positions of the installation platform respectively, so as to simulate the dynamic response conditions under different sway states during the test.

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