CN115901174B - Floating body experimental platform capable of realizing multi-degree-of-freedom motion of floating body - Google Patents
Floating body experimental platform capable of realizing multi-degree-of-freedom motion of floating body Download PDFInfo
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- CN115901174B CN115901174B CN202211549093.4A CN202211549093A CN115901174B CN 115901174 B CN115901174 B CN 115901174B CN 202211549093 A CN202211549093 A CN 202211549093A CN 115901174 B CN115901174 B CN 115901174B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
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Abstract
The invention relates to a floating body experimental platform capable of realizing multi-degree-of-freedom motion of a floating body, which comprises a fixed frame, a longitudinal connecting frame, a pitching connecting frame and a floating body; the fixed frame is fixed on the water tank and comprises a fixed frame main body, and two upright posts are arranged on two sides of the fixed frame main body; the longitudinal connecting frame comprises two rectangular frames, the two rectangular frames are fixedly connected through two cross beams, the two rectangular frames are respectively and slidably arranged on the upright posts on two sides of the fixed frame main body, and two ends of the rectangular frames are respectively connected with the fixed frame main body through springs; the tops of the pitching connecting frames are slidably arranged on the two cross beams, the tops of the two sides of the pitching connecting frames are respectively connected with the rectangular frames through springs, and the bottoms of the pitching connecting frames are movably connected with the floating body through connecting rods. The invention can realize heave motion, heave motion and pitching motion of the floating body under the action of waves, and is convenient for researching the physical characteristics of the floating body under the motion of different degrees of freedom.
Description
Technical Field
The invention relates to the technical field of floating body experiments, in particular to a floating body experiment platform capable of realizing multi-degree-of-freedom motion of a floating body.
Background
With the advancement of technology and the development of human society, research into engineering equipment of renewable energy sources in the ocean is required in order to reduce environmental pollution and further development and utilization of green energy sources. Because wave energy has wide energy distribution and sufficient energy storage, research on wave energy conversion and collection devices is particularly important. Meanwhile, in order to reduce the influence of waves on coastal and shoreside buildings, breakwater applications have become more widespread. Therefore, scientific researchers study the integrated system of the breakwater and the wave energy device so as to realize the effects of wave prevention and wave collection and improve the utilization rate of energy, wherein experimental comparison is carried out on a physical model, and the research on the multi-degree-of-freedom floater is of great significance to the three-dimensional experiment.
In the existing researches, the fixed breakwater is mostly researched, the research on the breakwater with multiple degrees of freedom is less, an experimental platform for performing three-dimensional experiments is not perfect enough, and the physical characteristics of the floating body under the motion of different degrees of freedom cannot be well researched.
Disclosure of Invention
Aiming at the technical problems existing in the prior art, the invention aims at: the floating body experimental platform capable of achieving the multi-degree-of-freedom motion of the floating body is provided, so that the floating body can achieve heave motion, heave motion and pitching motion under the action of waves, and the physical characteristics of the floating body under different degrees of freedom motion can be conveniently studied.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a floating body experimental platform capable of realizing multi-degree-of-freedom motion of a floating body comprises a fixed frame, a longitudinal connecting frame, a pitching connecting frame and a floating body; the fixed frame is fixed on the water tank and comprises a fixed frame main body, and two upright posts are arranged on two sides of the fixed frame main body; the longitudinal connecting frame comprises two rectangular frames, the two rectangular frames are fixedly connected through two cross beams, the two rectangular frames are respectively and slidably arranged on the upright posts on two sides of the fixed frame main body, and two ends of the rectangular frames are respectively connected with the fixed frame main body through springs; the tops of the pitching connecting frames are slidably arranged on the two cross beams, the tops of the two sides of the pitching connecting frames are respectively connected with the rectangular frames through springs, and the bottoms of the pitching connecting frames are movably connected with the floating body through connecting rods.
Further, a first fixing rod is arranged in the floating body, an upper connecting seat is arranged on the first fixing rod, a through hole is formed in the upper connecting seat, two lower connecting seats are arranged on the bottom of the pitching connecting frame, a through hole is formed in the lower connecting seat, and a connecting rod penetrates through the lower connecting seat and the through hole of the upper connecting seat to connect the pitching connecting frame with the floating body.
Further, two second fixing rods are arranged in the floating body, the two second fixing rods are respectively arranged on two sides of the first fixing rod, and the bottom of the pitching connecting frame is connected with the second fixing rods through springs.
Further, a longitudinal guide rail is arranged on the upright post, a pulley is arranged on the rectangular frame, and the pulley is slidably arranged in the longitudinal guide rail.
Further, a transverse guide rail is arranged on the cross beam, a pulley is arranged at the top of the pitching connecting frame, and the pulley is slidably arranged in the transverse guide rail.
Further, the device also comprises a measuring instrument, wherein the measuring instrument comprises a displacement sensor, a longitudinal tension pressure sensor, a transverse tension pressure sensor and a gesture sensor, the displacement sensor is connected to the longitudinal connecting frame, the longitudinal tension pressure sensor is connected to a spring connected with the main body of the rectangular frame and the main body of the fixed frame, the transverse tension pressure sensor is connected to a spring connected with the longitudinal rocking connecting frame and the rectangular frame, and the gesture sensor is connected to the inside of the floating body.
Further, a connecting frame is further arranged on one side of the fixed frame body and used for placing the wave energy power generation device.
Further, the fixing frame is fixed on the wall of the water tank through a G-shaped clamp.
Further, the fixed frame, the longitudinal connecting frame and the pitching connecting frame are all made of aluminum alloy sections.
In general, the invention has the following advantages:
1. the longitudinal connecting frame is slidably arranged on the fixed frame, the pitching connecting frame is slidably arranged on the longitudinal connecting frame, and the floating body is movably arranged on the pitching connecting frame, so that the floating body can realize heave motion, pitch motion and pitching motion under the action of waves, and the physical characteristics of the floating body under different degrees of freedom motion can be conveniently studied.
2. The floating body is detachably arranged on the pitching connecting frame through the connecting rod, the upper connecting seat and the lower connecting seat, and the floating bodies with different shapes can be flexibly replaced so as to study the hydrodynamic characteristics of the floating bodies with different shapes.
3. The invention ensures the reliability of experimental data by restraining the impact force of heave motion and limiting the rotation amplitude of pitching motion through the spring.
4. The invention can measure the motion characteristics of the floating body through a plurality of sensors and monitor the physical state data of the floating body in real time through a computer.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic structural view of a stationary frame of the present invention;
FIG. 3 is a schematic view of the structure of the connection of the fixed frame and the longitudinal connecting frame of the present invention;
FIG. 4 is a schematic view of the structure of the connection of the longitudinal connecting frame and the pitch connecting frame of the present invention;
FIG. 5 is a schematic structural view of the pitch link frame and float connection of the present invention;
FIG. 6 is an enlarged view of a portion of the pitch link frame and float connection of the present invention;
FIG. 7 is a schematic structural view of the floating body of the present invention;
wherein: 1: fixed frame, 11: upright post, 12: longitudinal rail, 13: connecting frame, 2: longitudinal connecting frame, 21: rectangular frame, 22: beam, 23: transverse guide rail, 3: pitch connection frame, 31: lower connecting seat, 4: floating body, 41: first dead lever, 42: upper connection base, 43: second fixing lever, 44: connecting rod, 5: spring, 6: pulley, 7: displacement sensor, 8: longitudinal tension pressure sensor, 9: transverse tension pressure sensor, 10: an attitude sensor.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
As shown in fig. 1 to 5, a floating body experimental platform capable of realizing multi-degree-of-freedom motion of a floating body comprises a fixed frame, a longitudinal connecting frame, a pitching connecting frame and a floating body; the fixed frame is fixed on the water tank and comprises a fixed frame main body, and two upright posts are arranged on two sides of the fixed frame main body; the longitudinal connecting frame comprises two rectangular frames, the two rectangular frames are fixedly connected through two cross beams, the two rectangular frames are respectively and slidably arranged on the upright posts on two sides of the fixed frame main body, and two ends of the rectangular frames are respectively connected with the fixed frame main body through springs; the tops of the pitching connecting frames are slidably arranged on the two cross beams, the tops of the two sides of the pitching connecting frames are respectively connected with the rectangular frames through springs, and the bottoms of the pitching connecting frames are movably connected with the floating body through connecting rods.
In the embodiment, in order to restrain the impact force of the heave motion of the longitudinal connecting frames, eight springs which are longitudinally arranged are connected to the longitudinal connecting frames, and two springs are arranged at two ends of each rectangular frame; in order to restrain the impact force of the pitching connecting frame in the pitching motion, four springs which are transversely arranged are connected to the pitching connecting frame, and two springs are arranged on two sides of the pitching connecting frame.
As shown in fig. 5 to 7, a first fixing rod is arranged in the floating body, an upper connecting seat is arranged on the first fixing rod, a through hole is arranged on the upper connecting seat, two lower connecting seats are arranged on the bottom of the pitching connecting frame, through holes are arranged on the lower connecting seats, and a connecting rod penetrates through the through holes of the lower connecting seats and the upper connecting seats to connect the pitching connecting frame with the floating body. The pitching connecting frame is connected with the floating body by adopting the connecting rod, the lower connecting seat and the upper connecting seat, and is detachably connected, so that different floating bodies can be quickly detached and assembled on the pitching connecting frame, and the hydrodynamic characteristics of different floating bodies can be studied.
In this embodiment, still be equipped with two second dead levers in the floating body, two second dead levers set up respectively in the both sides of first dead lever, and the bottom of pitch connecting frame still is connected with the second dead lever through the spring. In order to limit the overlarge rotation amplitude of the pitching movement of the floating body, four springs which are longitudinally arranged are connected to the pitching connecting frame, and the four springs are uniformly distributed at the bottom of the pitching connecting frame.
As shown in fig. 3, the upright post is provided with a longitudinal guide rail, the rectangular frame is provided with a pulley, and the pulley is slidably arranged in the longitudinal guide rail. The rectangular frame can slide up and down in the longitudinal guide rail, so that the longitudinal connecting frame can reciprocate up and down in the fixed frame, and the floating body can realize heave motion.
As shown in fig. 4, a transverse guide rail is arranged on the cross beam, a pulley is arranged at the top of the pitching connecting frame, and the pulley is slidably arranged in the transverse guide rail. The pitching connecting frame can slide left and right in the transverse guide rail, so that the pitching connecting frame can reciprocate left and right on the longitudinal connecting frame, and the floating body can realize pitching movement.
As shown in fig. 1, the floating body comprises a floating body, a longitudinal connecting frame, a rectangular frame, a fixing frame main body, a longitudinal connecting frame, a longitudinal stretching pressure sensor, a transverse stretching pressure sensor and a posture sensor, wherein the measuring instrument comprises a displacement sensor, the longitudinal stretching pressure sensor, the transverse stretching pressure sensor and the posture sensor, the displacement sensor is connected to the longitudinal connecting frame, the longitudinal stretching pressure sensor is connected to the spring connected with the rectangular frame main body, the transverse stretching pressure sensor is connected to the spring connected with the longitudinal stretching connecting frame and the rectangular frame, and the posture sensor is connected to the floating body.
A displacement sensor is arranged on the longitudinal connecting frame to measure the relative displacement between the longitudinal connecting frame and the fixed frame; a longitudinal tension and pressure sensor is arranged between the rectangular frame and the fixed frame main body, and tension and pressure between the longitudinal connecting frame and the fixed frame are measured; a transverse tension and pressure sensor is arranged between the pitching connecting frame and the rectangular frame, and tension and pressure between the pitching connecting frame and the longitudinal connecting frame are measured; and a posture sensor is arranged in the floating body to measure the posture change of the floating body. In the embodiment, the displacement sensor, the longitudinal tension pressure sensor, the transverse tension pressure sensor and the gesture sensor are all connected with a computer, and the physical state of the floating body in the experiment can be monitored in real time.
As shown in fig. 1, a connecting frame is further arranged on one side of the fixed frame body, and the connecting frame is used for placing a wave energy power generation device, so that the floating body experiment platform and the wave energy power generation device form an integrated system, and more functions are realized.
In this embodiment, fixed frame is fixed on the cell wall through the G type clamp, and G type clamp is with fixed frame and cell wall zonulae occludens, has guaranteed the security and the accuracy of experiment.
The fixed frame, the longitudinal connecting frame and the pitching connecting frame are all made of aluminum alloy sections. The aluminum alloy section has good strength and rigidity, and is convenient to install and connect.
The working principle of the invention is as follows:
under the action of waves, the floating body can realize heave, heave and pitch motions on the floating body experimental platform. The floating body reciprocates up and down to drive the pitching connecting frame to reciprocate up and down, so that the pulley of the longitudinal connecting frame is driven to reciprocate up and down along the longitudinal guide rail, and the heave operation of the floating body is realized; the floating body reciprocates left and right to drive the pulley of the pitching connecting frame to reciprocate left and right along the transverse guide rail, so that the pitching movement of the floating body is realized; the floating body is movably connected to the pitching connecting frame, and the floating body swings left and right to realize pitching movement of the floating body.
In general, the longitudinal connecting frame of the invention is slidably mounted on the fixed frame, the pitching connecting frame is slidably mounted on the longitudinal connecting frame, and the floating body is movably mounted on the pitching connecting frame, so that the floating body can realize heave motion, heave motion and pitching motion under the action of waves, thereby facilitating the physical characteristics of the floating body under the motion of different degrees of freedom. The floating body is detachably arranged on the pitching connecting frame through the connecting rod, the upper connecting seat and the lower connecting seat, and the floating bodies with different shapes can be flexibly replaced so as to study the hydrodynamic characteristics of the floating bodies with different shapes. The invention ensures the reliability of experimental data by restraining the impact force of heave motion and limiting the rotation amplitude of pitching motion through the spring. The invention can measure the motion characteristics of the floating body through a plurality of sensors and monitor the physical state data of the floating body in real time through a computer.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (7)
1. A floating body experimental platform capable of realizing multi-degree-of-freedom motion of a floating body is characterized in that: comprises a fixed frame, a longitudinal connecting frame, a pitching connecting frame and a floating body; the fixed frame is fixed on the water tank and comprises a fixed frame main body, and two upright posts are arranged on two sides of the fixed frame main body; the longitudinal connecting frame comprises two rectangular frames, the two rectangular frames are fixedly connected through two cross beams, the two rectangular frames are respectively and slidably arranged on the upright posts on two sides of the fixed frame main body, and two ends of the rectangular frames are respectively connected with the fixed frame main body through springs; the tops of the pitching connecting frames are slidably arranged on the two cross beams, the tops of the two sides of the pitching connecting frames are respectively connected with the rectangular frames through springs, and the bottoms of the pitching connecting frames are movably connected with the floating bodies through connecting rods; the floating body is internally provided with a first fixed rod, an upper connecting seat is arranged on the first fixed rod, a through hole is arranged on the upper connecting seat, two lower connecting seats are arranged on the bottom of the pitching connecting frame, through holes are arranged on the lower connecting seats, and a connecting rod penetrates through the through holes of the lower connecting seats and the upper connecting seats to connect the pitching connecting frame with the floating body; the floating body is also internally provided with two second fixing rods, the two second fixing rods are respectively arranged at two sides of the first fixing rod, and the bottom of the pitching connecting frame is also connected with the second fixing rods through springs.
2. The floating body experimental platform capable of achieving multi-degree-of-freedom motion of the floating body according to claim 1, wherein the floating body experimental platform is characterized in that: the upright post is provided with a longitudinal guide rail, the rectangular frame is provided with a pulley, and the pulley is slidably arranged in the longitudinal guide rail.
3. The floating body experimental platform capable of achieving multi-degree-of-freedom motion of the floating body according to claim 1, wherein the floating body experimental platform is characterized in that: the transverse guide rail is arranged on the cross beam, the pulley is arranged at the top of the pitching connecting frame, and the pulley is slidably arranged in the transverse guide rail.
4. The floating body experimental platform capable of achieving multi-degree-of-freedom motion of the floating body according to claim 1, wherein the floating body experimental platform is characterized in that: the measuring instrument comprises a displacement sensor, a longitudinal tension pressure sensor, a transverse tension pressure sensor and a gesture sensor, wherein the displacement sensor is connected to the longitudinal connecting frame, the longitudinal tension pressure sensor is connected to a spring connected with the main body of the fixed frame, the transverse tension pressure sensor is connected to a spring connected with the longitudinal connecting frame and the rectangular frame, and the gesture sensor is connected to the inside of the floating body.
5. The floating body experimental platform capable of achieving multi-degree-of-freedom motion of the floating body according to claim 1, wherein the floating body experimental platform is characterized in that: one side of the fixed frame main body is also provided with a connecting frame which is used for placing the wave energy power generation device.
6. The floating body experimental platform capable of achieving multi-degree-of-freedom motion of the floating body according to claim 1, wherein the floating body experimental platform is characterized in that: the fixed frame is fixed on the wall of the water tank through a G-shaped clamp.
7. The floating body experimental platform capable of achieving multi-degree-of-freedom motion of the floating body according to claim 1, wherein the floating body experimental platform is characterized in that: the fixed frame, the longitudinal connecting frame and the pitching connecting frame are all made of aluminum alloy sections.
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| CN202211549093.4A CN115901174B (en) | 2022-12-05 | 2022-12-05 | Floating body experimental platform capable of realizing multi-degree-of-freedom motion of floating body |
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