A pitch damping connection device

Abstract

This invention provides a pitch damping connection device, including an upper support frame, a lower support frame, a connector, and a damping rod. One end of the connector is fixedly connected to one of the upper and lower support frames, and the other end is rotatably connected to the other one. Both ends of the damping rod are rotatably connected to the upper and lower support frames, respectively. This invention is used to connect an installation platform and a small boat. When the small boat experiences pitching motion due to waves or its own movement, the lower support frame moves accordingly. The pitching motion of the lower support frame causes the connector to rotate around its hinge axis. The damping rod, through its extension and contraction deformation, effectively absorbs the energy generated by the pitching motion, thereby suppressing changes in the pitch attitude of the upper support frame. Through the cooperation of the connector and the damping rod, this invention can promptly counteract the swaying of the installation platform caused by external factors when the small boat moves forward, backward, or turns, or encounters waves, thus ensuring the stability of the installation platform.

Description

Technical Field

[0001] This utility model relates to the technical field of sea trial support platforms, specifically to a pitch damping connection device. Background Technology

[0002] A sea trial support platform is a supporting vessel used for marine scientific research and testing. It is typically equipped with lightweight equipment such as navigation systems, corner reflectors, and electrode cables, and integrates functions such as measurement, display, and remote control.

[0003] Currently, sea trial support platforms used for scientific research or experiments are mainly achieved through two technical approaches: the conversion of old vessels and the retrofitting of smaller vessels. Older vessels are typically converted into conventional medium-sized surface vessel platforms. While these platforms possess good load-bearing capacity and comparable target characteristics, the conversion and maintenance costs are high, the construction period is long and complex, and transportation is inconvenient. Smaller surface vessels, although characterized by low cost, strong environmental adaptability, and high speed, lack the flexibility and maneuverability to effectively simulate the target characteristics of medium and large vessels, thus affecting the evaluation of research and sea trial results.

[0004] To address the above issues, current sea trial support platforms generally adopt a modular design, typically using catamarans or trimaran vessels to achieve low costs. A typical modular sea trial support platform consists of two parts: a floating body and test equipment. The floating body is provided with buoyancy by sealed airbags or the hull, and is assembled into groups through series, parallel, bow-to-stern, or back-to-back connections. Navigation, remote control, monitoring, and other test equipment are mounted on the floating body.

[0005] However, when current sealed airbags or hulls are assembled, their overall structure either forms a catamaran or a floating array. The propulsion systems are all centrally located at the stern of the sea trial platform, limiting the number of propulsion units that can be installed. This, in turn, makes it difficult to increase the speed of the sea trial platform and meet diverse motion requirements. Adding high-horsepower propulsion units would increase production costs and offer limited improvement to the maneuverability of the modular offshore platform.

[0006] To address this issue, the inventors have developed a mobile platform comprising at least one modular unit, which includes a mounting platform and multiple small boats connected below the mounting platform. To prevent vibrations and attitude changes caused by waves, wind, and movement of the small boats from being directly transmitted to the mounting platform and thus affecting the reliability of the equipment on the platform, the inventors designed a pitch damping connection device for this mobile platform. Utility Model Content

[0007] Therefore, in order to solve the technical problems existing in the above-mentioned background art, this utility model provides a pitch damping connection device.

[0008] Therefore, this utility model provides a pitch damping connection device, comprising:

[0009] The upper support frame is designed to be fixedly connected to the installation platform at its top.

[0010] The lower support frame is arranged vertically opposite to the upper support frame, and its bottom is suitable for fixed connection with the small boat.

[0011] A connector is located between the upper support frame and the lower support frame, with one end fixedly connected to one of the upper support frame and the lower support frame, and the other end rotatably connected to the other of the upper support frame and the lower support frame;

[0012] A damping rod is located between the upper support frame and the lower support frame, with its upper end rotatably connected to the upper support frame and its lower end rotatably connected to the lower support frame; the connecting piece and the damping rod are arranged sequentially along the front and rear direction of the small boat.

[0013] Furthermore, one end of the connector is fixedly connected to the upper support frame, and the other end is hinged to the lower support frame, with the hinge axis direction perpendicular to the movement direction of the boat.

[0014] Furthermore, the rotation axis of the upper end of the damping rod is arranged parallel to the rotation axis of the lower end, and both are parallel to the hinge axis of the other end of the connector.

[0015] Furthermore, the upper support frame includes two parallel flat plates arranged vertically, and the two flat plates are connected by a plurality of support columns; the number of support columns is at least three, and they are evenly distributed along the circumference of the flat plates.

[0016] Furthermore, the connector has an inverted H-shaped structure, with the top crossbeam of the connector fixedly connected to the upper support frame and the bottom crossbeam hinged to the lower support frame.

[0017] Furthermore, the lower support frame includes two sets of connecting rod assemblies arranged opposite each other along the width direction of the small boat, the connecting rod assemblies including:

[0018] The crossbeam is horizontally positioned along the fore-and-aft direction of the small boat;

[0019] There are two inclined beams, which are arranged opposite each other at both ends of the crossbeam along its length; the upper end of the inclined beam is connected to the crossbeam, and the lower end extends inclined away from the crossbeam.

[0020] Furthermore, there are two damping rods, which are arranged opposite each other along the width direction of the boat.

[0021] Furthermore, it also includes:

[0022] A shock-absorbing spring is sleeved on the damping rod, and the two ends of the shock-absorbing spring are respectively connected to the two ends of the damping rod.

[0023] Furthermore, a reinforcing rib is provided between the connector and the upper support frame, and the reinforcing rib connects the connector and the lower plate of the upper support frame respectively.

[0024] Furthermore, the flat plate of the upper support frame located below protrudes from the connector at both ends along the front-rear direction of the boat, and the reinforcing ribs are in two sets, arranged opposite to each other on both sides of the connector along the front-rear direction of the boat.

[0025] The technical solution provided by this utility model has the following advantages:

[0026] The pitch damping connection device of this utility model includes an upper support frame, a lower support frame, a connector, and a damping rod. The top of the upper support frame is adapted to be fixedly connected to the mounting platform. The lower support frame is arranged vertically opposite to the upper support frame, and its bottom is adapted to be fixedly connected to the boat. The connector is located between the upper support frame and the lower support frame, with one end fixedly connected to one of the upper and lower support frames, and the other end rotatably connected to the other of the upper and lower support frames. The damping rod is located between the upper and lower support frames, with its upper end rotatably connected to the upper support frame and its lower end rotatably connected to the lower support frame. The connector and the damping rod are arranged sequentially along the front-rear direction of the boat. When the boat moves forward, backward, turns, or when waves are generated on the water surface, the damping rod adjusts the pitch attitude of the mounting platform by telescoping and deforming to keep the mounting platform stable.

[0027] This utility model discloses a pitch damping connection device for connecting an installation platform and a small boat. The top of the upper support frame is designed to be fixedly connected to the installation platform. The lower support frame is arranged opposite to the upper support frame, and its bottom is designed to be fixedly connected to the small boat. A damping rod is used to provide damping force. When the small boat travels on the water, it will experience pitch motion due to the influence of waves or its own motion. This motion is transmitted to the lower support frame, which is fixed to the small boat and moves accordingly. The pitch motion of the lower support frame will cause the connecting parts to rotate around the hinge axis. The damping rod, through its extension and contraction deformation, can effectively absorb the energy generated by the pitch motion, thereby suppressing the pitch attitude change of the upper support frame and ensuring the stability of the installation platform connected to the upper support frame.

[0028] The pitch damping connection device of this utility model, through the cooperation of the connector and the damping rod, allows the damping rod to adjust the pitch attitude of the frame in a timely manner by extending and contracting when the small boat is moving forward, backward, turning or encountering waves. This counteracts the shaking of the installation platform caused by external factors, ensures that the installation platform maintains a stable state, and improves the stability and safety of the equipment and personnel that may be carried on the installation platform. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the prior art or specific embodiments of this utility model, the accompanying drawings used in the description of the prior art or specific embodiments are briefly introduced below.

[0030] Figure 1 This is a schematic diagram of the overall structure of the pitch damping connection device of this utility model.

[0031] Figure 2 This is a perspective view of another usage state of the pitch damping connection device of this utility model.

[0032] Figure 3 This is the front view of Embodiment 2.

[0033] Figure 4 This is a reference diagram showing the usage status of the pitch damping connection device of this utility model.

[0034] Figure 5 This is a reference diagram showing another usage state of the pitch damping connection device of this utility model.

[0035] Figure 6 This is a schematic diagram of the pitching and seakeeping of each small boat.

[0036] Reference numerals: 1. Mounting platform; 2. Small boat; 3. Pitch damping connection device; 31. Upper support frame; 311. Flat plate; 312. Support column; 32. Lower support frame; 321. Crossbeam; 322. Inclined beam; 33. Connector; 34. Damping rod; 35. Reinforcing rib; 36. Reinforcing plate. Detailed Implementation

[0037] To enable those skilled in the art to better understand this solution, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0038] It should be noted that the terms "first," "second," etc., in the claims and specification of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such as a process, method, system, product, or device that includes a series of steps or units, not limited to those steps or units explicitly listed, but may also include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0039] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the term "multiple" should mean two or more. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0040] The present application will now be described in detail with reference to the accompanying drawings and embodiments. Example 1

[0041] This embodiment provides a pitch damping connection device, such as Figure 1-2 As shown, the system includes an upper support frame 31, a lower support frame 32, a connector 33, and a damping rod 34. The top of the upper support frame 31 is adapted to be fixedly connected to the installation platform. The lower support frame 32 is arranged vertically opposite to the upper support frame 31, and its bottom is adapted to be fixedly connected to the boat. The connector 33 is located between the upper support frame 31 and the lower support frame 32, with one end fixedly connected to one of the upper support frame 31 and the lower support frame 32, and the other end rotatably connected to the other of the upper support frame 31 and the lower support frame 32. The damping rod 34 is located between the upper support frame 31 and the lower support frame 32, with its upper end rotatably connected to the upper support frame 31 and its lower end rotatably connected to the lower support frame 32. The connector 33 and the damping rod 34 are arranged sequentially along the front-rear direction of the boat. When the boat moves forward, backward, turns, or when waves are generated on the water surface, the damping rod 34 adjusts the pitch attitude of the installation platform by telescoping to keep the installation platform stable.

[0042] The pitch damping connection device in this embodiment is used to connect the mounting platform 1 and the small boat 2. The mounting platform 1 can be configured as a truss frame structure, and the small boat 2 can be, for example, a motorboat equipped with a power propulsion device. There can be multiple small boats 2, specifically configured according to the size and mobility of the mounting platform. The mounting platform can flexibly support lightweight load devices such as corner reflectors, sound source simulators, and infrared source simulators as needed, simulating various signal sources in terms of scale and electromagnetic characteristics to meet the needs of different test scenarios. The top of the upper support frame 31 is designed to be fixedly connected to the mounting platform 1 (e.g., by bolts or rivets). The lower support frame 32 is arranged opposite to the upper support frame 31, and its bottom is designed to be fixedly connected to the small boat. The damping rod 34 is used to provide damping force. When the small boat travels on the water surface, it will experience pitch motion due to the influence of waves or its own motion. This motion is transmitted to the lower support frame, causing the lower support frame 32 fixed to the small boat to move accordingly. The pitch motion of the lower support frame 32 will drive the connecting piece 33 to rotate around the hinge axis. The damping rod 34 can effectively absorb the energy generated by pitch motion through its expansion and contraction (the damping medium inside the damping rod will generate damping force), thereby suppressing the pitch attitude change of the upper support frame 31 and making the installation platform 1 connected to the upper support frame 31 stable.

[0043] In this embodiment, the pitch damping connection device, through the cooperation of the connector 33 and the damping rod 34, allows the damping rod 34 to adjust the pitch attitude of the frame in a timely manner by extending and deforming when the boat is moving forward, backward, turning or encountering waves. This counteracts the shaking of the installation platform caused by external factors, ensuring that the installation platform 1 maintains a stable state and improving the stability and safety of the equipment on the installation platform.

[0044] In this embodiment of the pitch damping connection device, one end of the connector 33 is fixedly connected to the upper support frame 31, and the other end is hinged to the lower support frame 32, with the hinge axis direction perpendicular to the movement direction of the boat.

[0045] In this embodiment, the other end of the connector 33 is perpendicular to the direction of motion of the boat to the hinge axis of the lower support frame 32, so that the lower support frame 32 rotates around the axis when pitching, effectively reducing the impact of pitching motion on the upper support frame 31.

[0046] In this embodiment of the pitch damping connection device, the rotation axis of the upper end of the damping rod 34 is arranged parallel to the rotation axis of the lower end, and both are parallel to the hinge axis of the other end of the connector 33.

[0047] In this embodiment, the damping rod 34 can extend and retract smoothly when the boat pitches, and the damping force can be effectively converted into suppression of pitching motion, thereby improving the damping rod 34's suppression effect on pitching vibration.

[0048] In this embodiment of the pitch damping connection device, the upper support frame 31 includes two parallel flat plates 311 arranged vertically, and the two flat plates 311 are connected by a plurality of support columns 312; the number of support columns 312 is at least three, and they are evenly distributed along the circumference of the flat plates 311.

[0049] In this embodiment, the plate 311 can be circular or square, and the number of support columns 312 is at least three, which are evenly distributed along the circumference of the plate 311, providing sufficient strength and stability, thereby avoiding structural deformation and damage.

[0050] In this embodiment of the pitch damping connection device, the connector 33 has an inverted H-shaped structure, the top crossbeam of the connector 33 is fixedly connected to the upper support frame 31, and the bottom crossbeam is hinged to the lower support frame 32.

[0051] In this embodiment, the connector 33 has a H-shaped structure, which can provide high rigidity and ensure the stability of the connector 33 when subjected to bending moment and shear force.

[0052] In this embodiment of the pitch damping connection device, the lower support frame 32 further includes two sets of connecting rod assemblies arranged opposite each other along the width direction of the boat. The connecting rod assembly includes a crossbeam 321 and an inclined beam 322. The crossbeam 321 is arranged horizontally along the front and rear direction of the boat. There are two inclined beams 322, which are arranged opposite each other at both ends of the crossbeam 321 along its length. The upper end of the inclined beam 322 is connected to the crossbeam 321, and the lower end extends obliquely away from the crossbeam 321.

[0053] In this embodiment, the inclined design of the inclined beam 322 decomposes the force from the boat and effectively transmits it to the crossbeam 321 and the upper support frame 31, enabling the lower support frame 32 to withstand a larger load. Simultaneously, the design of the inclined beam 322 gives the lower support frame 32 better bending and shear resistance. The inclined beam 322 and the bottom of the boat can be fixedly connected by riveting, welding, gluing, bolting, etc., or a reinforcing plate 36 can be installed at the bottom of the two inclined beams 322 on the same side to improve the stability of the connection. The top of the boat 2 can be modified accordingly based on the structure of the inclined beam 322 or the reinforcing plate 36 to facilitate the connection of the inclined beam 322 or the reinforcing plate 36.

[0054] In this embodiment of the pitch damping connection device, there are two damping rods 34, which are arranged opposite to each other along the width direction of the boat.

[0055] In this embodiment, the two damping rods 34 work together to share the load, provide greater damping force, improve the strength and stability of the pitch damping connection device, reduce the load on a single damping rod, extend service life, and improve the torsional performance of the system.

[0056] The pitch damping connection device of this embodiment further includes a shock-absorbing spring, which is sleeved on the damping rod 34, and the two ends of the shock-absorbing spring are respectively connected to the two ends of the damping rod 34.

[0057] In this embodiment, the damping spring (not shown in the figure) and the damping rod 34 work together to further improve the system's vibration damping effect. The damping spring improves the system's vibration damping effect and enhances its ability to suppress high-frequency vibrations. The combination of the damping spring and the damping rod enables the structure to remain stable under various sea conditions. The specific combination of the damping rod 34 and the damping spring can be selected from mature products in the existing technology, such as Zhongding Vibration Damper, Southern Aerospace, Dongjigong, KING, OME, Top, and Chuannan Vibration Damper. The specific models and specifications can be selected according to the actual working conditions and load, and will not be elaborated here. Example 2

[0058] This embodiment is an improvement based on Embodiment 1.

[0059] The pitch damping connection device in this embodiment, such as Figure 3 As shown, a reinforcing rib 35 is provided between the connector 33 and the upper support frame 31, and the reinforcing rib 35 connects the connector 33 and the lower plate 311 of the upper support frame 31.

[0060] In this embodiment, a reinforcing rib 35 is provided between the connector 33 and the upper support frame 31. The reinforcing rib 35 can be a triangular structure or a plate-like structure. The reinforcing rib is connected to the connector 33 and the upper support frame 31 by welding, bolts, or other methods. The presence of the reinforcing rib 35 increases the connection strength between the connector 33 and the upper support frame 31, avoids stress concentration, thereby increasing stability and reducing deformation.

[0061] In this embodiment of the pitch damping connection device, the lower plate 311 of the upper support frame 31 protrudes from the connector 33 at both ends along the front-rear direction of the boat, and the reinforcing ribs 35 are in two sets, arranged opposite to each other on both sides of the connector 33 along the front-rear direction of the boat.

[0062] In this embodiment, the reinforcing ribs 35 are arranged in two sets, located on both sides of the connector 33 and positioned opposite each other along the front-rear direction of the boat. This arrangement allows the connector 33 to be more firmly connected to the upper support frame 31, enhancing the overall rigidity of the structure, further improving the strength and stability of the connection structure, and enhancing the system's resistance to bending and torsion.

[0063] The pitch damping connection device in this embodiment, such as Figure 4 , Figure 5 As shown, the installation platform 1 (truss frame) can be rectangular or triangular, and the pitch damping connection device 3 can connect the small boat 2 to the frame node of the truss frame (the place where the trusses intersect and connect with each other).

[0064] The pitch damping connection device in this embodiment, such as Figure 6 As shown, the pitch damping connection device 3 allows the small boat 2 to pitch up and down within the α angle range. On the one hand, it ensures good contact between the bottom of each small boat 2 and the seawater, guaranteeing sufficient thrust in the water (preventing overshoot); on the other hand, it can release the torque of the truss frame itself when sailing on the water surface, thus providing a certain degree of wave resistance.

[0065] The small boat 2 can be a modified version of a commercially available motorboat, such as the motorboat (model HS-006J5A) produced by Jiujiang Haishen Motorboat Manufacturing Co., Ltd.

[0066] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this innovative technical solution.

Claims

1. A pitch damping connection device, characterized in that: include: The upper support frame (31) is adapted to be fixedly connected to the installation platform at the top; The lower support frame (32) is arranged vertically opposite to the upper support frame (31), and its bottom is suitable for fixed connection with the small boat; The connector (33) is located between the upper support frame (31) and the lower support frame (32), with one end fixedly connected to one of the upper support frame (31) and the lower support frame (32), and the other end rotatably connected to the other of the upper support frame (31) and the lower support frame (32); The damping rod (34) is located between the upper support frame (31) and the lower support frame (32). Its upper end is rotatably connected to the upper support frame (31), and its lower end is rotatably connected to the lower support frame (32). The connecting piece (33) and the damping rod (34) are arranged sequentially along the front and rear direction of the boat.

2. The pitch damping connection device according to claim 1, characterized in that, One end of the connector (33) is fixedly connected to the upper support frame (31), and the other end is hinged to the lower support frame (32), with the hinge axis direction perpendicular to the movement direction of the boat.

3. The pitch damping connection device according to claim 2, characterized in that, The rotation axis of the upper end of the damping rod (34) is arranged parallel to the rotation axis of the lower end, and both are parallel to the hinge axis of the other end of the connector (33).

4. The pitch damping connection device according to claim 1, characterized in that, The upper support frame (31) includes two parallel flat plates (311) arranged vertically, and the two flat plates (311) are connected by multiple support columns (312); the number of support columns (312) is at least three, and they are evenly distributed along the circumference of the flat plates (311).

5. The pitch damping connection device according to claim 2, characterized in that, The connector (33) has an inverted H-shaped structure. The top crossbeam of the connector (33) is fixedly connected to the upper support frame (31), and the bottom crossbeam is hinged to the lower support frame (32).

6. The pitch damping connection device according to claim 2, characterized in that, The lower support frame (32) includes two sets of connecting rod assemblies arranged opposite each other along the width direction of the boat, the connecting rod assemblies including: The crossbeam (321) is horizontally set along the front and rear direction of the small boat; There are two inclined beams (322), which are arranged opposite each other at both ends of the crossbeam (321) along its length. The upper end of the inclined beam (322) is connected to the crossbeam (321), and the lower end extends inclined away from the crossbeam (321).

7. The pitch damping connection device according to claim 1, characterized in that, There are two damping rods (34), which are arranged opposite each other along the width direction of the boat.

8. The pitch damping connection device according to claim 1, characterized in that, Also includes: A shock-absorbing spring is sleeved on the damping rod (34), and the two ends of the shock-absorbing spring are respectively connected to the two ends of the damping rod (34).

9. The pitch damping connection device according to claim 4, characterized in that, A reinforcing rib (35) is provided between the connector (33) and the upper support frame (31), and the reinforcing rib (35) connects the connector (33) and the plate (311) located below the upper support frame (31) respectively.

10. The pitch damping connection device according to claim 9, characterized in that, The upper support frame (31) has a flat plate (311) located below it that protrudes from the connector (33) at both ends along the front-rear direction of the boat. The reinforcing ribs (35) are in two sets and are arranged opposite to each other on both sides of the connector (33) along the front-rear direction of the boat.

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