A seabed specimen sampling device based on sonar positioning technology

Abstract

The present invention provides a seabed specimen sampling device based on sonar positioning technology, which belongs to the technical field of seabed sediment sampling. The invention is provided with a turntable, a sampling tube and a power mechanism. The turntable is driven to rotate intermittently by the first power mechanism. The second power mechanism presses down the sampling tube to collect samples when the turntable stops rotating, and replaces it when it rotates again. Continuous collection of multiple groups of samples is achieved, which greatly improves the sampling efficiency. An exhaust groove and a water-absorbing resin block are provided, and the exhaust groove is sealed by utilizing the property of the water-absorbing resin block that expands when it encounters water, so that the inside of the sampling tube is in a sealed state, effectively preventing the loss of collected samples. The double setting of the limit groove prevents the accidental loss of samples due to the closed mouth at the bottom of the sampling tube being not closed tightly or the gravel being stuck, and also plays a good supporting role for the bottom end of the sampling tube, preventing the top of the sampling tube from being separated from the turntable during operation.

Description

Technical Field

[0001] The invention belongs to the technical field of seabed sampling, and in particular relates to a seabed specimen sampling device based on sonar positioning technology. Background Art

[0002] With the continuous exploration and development of the ocean, the analysis of ocean bottom sediments is undoubtedly an important basis for ocean exploration. The sampling device in the prior art detects and analyzes the topography of the ocean bottom in real time through the sonar at the bottom of the sampling device before operating on the seabed sediments, to determine and ensure that the sampling device arrives at the designated sampling location smoothly.

[0003] In the prior art, when workers sample seabed sediments, they usually use a "grab bucket" type specimen sampling device, such as the patent publication number CN107314908A, which is titled "A detachable sediment sampling device", including a lifting rod assembly, a locking assembly, a load box, a sampling box, a connecting rod and two grab buckets. The two grab buckets are used to grab the sediments on the seabed surface by opening and closing. This sampling method not only damages the seabed surface sediments, but also cannot replace the sampling tube on the seabed for multiple samplings due to the non-sealed design. Only single sampling operations can be performed, so the practicality is low.

[0004] When the specimen sampling device in the prior art is used to sample seabed sediments, the interior of the sampling tube should be empty and filled with air before the sampling operation. When the sampling tube is vertically downward for sampling, the bottom end contacts the water, causing the air inside to be squeezed and discharged from the top pores. However, when the sediment collected inside reaches the top of the inner cavity of the collection tube, it will contact the seawater, causing the sediment to become loose, forcing the sediment to be discharged through the top pores, destroying the sediment sample on the top layer, making it inconvenient for the staff to analyze and use.

[0005] The specimen sampling device in the prior art usually has a closed mouth at the bottom. When the specimen sampling device is finished sampling the seabed sediment, the closed mouth at the bottom will be directly closed to reduce the loss of samples inside the collection tube. However, the presence of hard blocks such as gravel inside the seabed sediment can easily cause the closed mouth to become stuck, making it impossible to close the closed mouth precisely. As a result, some samples flow out through the gap when stored inside the sampling device, resulting in sample loss. Therefore, it is necessary to improve and optimize it. Summary of the invention

[0006] The purpose of the present invention is to provide a seabed specimen sampling device based on sonar positioning technology to solve the problems raised in the above background technology.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: A seabed specimen sampling device based on sonar positioning technology comprises a bottom plate, a shell and a first power mechanism are fixedly installed on the top of the bottom plate, and the first power mechanism is located inside the shell, a first vertical rod is movably installed on the top of the bottom plate, a rotating wheel is fixedly installed on the top of the first vertical rod, a second vertical rod is fixedly installed on the top of the rotating wheel, a rotating disk is fixedly installed on the top of the second vertical rod, a first vertical plate and a second vertical plate are fixedly installed on the top of the bottom plate, a reset mechanism is arranged inside the first vertical plate and the second vertical plate, a sampling tube is movably sleeved inside the rotating disk and the bottom end of the sampling tube extends downward, limit blocks located inside the rotating disk are fixedly installed on both sides of the sampling tube, a blocking mechanism is arranged inside the bottom plate, a first movable block is movably installed inside the sampling tube, an exhaust groove is provided on the outer surface of the first movable block, a round hole is penetrated and opened on the surface of the rotating disk, a second power mechanism is fixedly installed on the top of the shell, and a limit mechanism is arranged inside the rotating disk.

[0008] Preferably, a fourth groove is opened inside the sampling tube, a third movable block is movably installed inside the fourth groove, a fourth spring located on the top of the third movable block is elastically connected inside the fourth groove, and a water-absorbing resin block is fixedly installed on the top of the inner cavity of the first movable block.

[0009] Preferably, a disc located at the top of the rotating wheel is movably sleeved on the outer surface of the second vertical rod, a limiting groove is provided inside the disc, the bottom end of the limiting groove is flush with the bottom of the sampling tube, and a notch is left at the right end of the disc.

[0010] Preferably, the second power mechanism comprises a hydraulic cylinder located on the top of the housing, and the output end of the hydraulic cylinder passes through the housing and is fixedly mounted with a bottom block.

[0011] Preferably, the blocking mechanism includes a second groove, a block and a second spring, the second groove is located inside the bottom plate, the block is movably installed inside the second groove, and the second spring located at the left end of the block is elastically connected inside the second groove.

[0012] Preferably, the reset mechanism includes a first groove, a moving block, a vertical rod and a first spring, the first groove is opened inside the first vertical plate and the second vertical plate, the moving block is slidably installed inside the first groove, the bottom end of the first groove is fixedly installed with a vertical rod, the top of the vertical rod passes through the moving block, and the outer surface of the vertical rod is movably sleeved with a first spring elastically connected between the bottom end of the moving block and the bottom end of the first groove.

[0013] Preferably, the limiting mechanism includes a third groove, a moving plate, a second movable block and a third spring. The third groove is opened inside the turntable. The moving plate is movably installed inside the third groove. The second movable block is fixedly installed on the left end of the moving plate. The left end of the second movable block passes through the turntable and extends to the interior of the sampling tube. The interior of the third groove is elastically connected to the third spring located at the right end of the moving plate.

[0014] Preferably, the first power mechanism comprises a motor, a vertical shaft and a rotating block, the motor is located on the top of the bottom plate, the output shaft of the motor is fixedly connected to the vertical shaft, and the rotating block is fixedly installed on the top of the vertical shaft.

[0015] Preferably, a gap is left between the water-absorbing resin block and the inner surface of the first movable block.

[0016] Preferably, a sonar device is fixedly mounted on the bottom end of the bottom plate, and an information processing unit is fixedly mounted on the top of the turntable. A gap is left between the water-absorbing resin block and the inner surface of the first movable block.

[0017] Preferably, probes are fixedly mounted on the bottom of the base plate, and the spacing between adjacent probes is 1 cm.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The present invention is provided with a turntable, a sampling tube and a second power mechanism. The turntable is driven to rotate intermittently by the first power mechanism, so that the second power mechanism presses down the sampling tube to collect samples when the turntable stops rotating. When the second power mechanism rotates again, the sampling tube is replaced. While achieving the effect of collecting multiple groups of samples continuously, the number of samples collected during each dive is greatly increased, thereby improving the sampling efficiency.

[0020] 2. The present invention provides an exhaust groove and a water-absorbing resin block, applies upward pressure to the water-absorbing resin block to discharge the gas inside the sampling tube through the exhaust groove, and then uses the effect of the water-absorbing resin block swelling when it comes into contact with water to seal the exhaust groove. Compared with the traditional device, the device uses the property of the water-absorbing resin block swelling when it comes into contact with water to seal the exhaust groove through the water-absorbing resin block, effectively preventing the loss of the sediment sample collected inside. At the same time, because the exhaust groove is blocked, the inside of the sampling tube is once again sealed, which has a good suction force on the sediment inside the sampling tube, preventing the sediment from accidentally falling off from the sampling tube during operation.

[0021] 3. The present invention provides a sampling tube and a limiting groove, and drives the sampling tube to rotate through a turntable, so that the sampling tube containing the sediment sample rotates to the inside of the limiting groove. Compared with the traditional device, the present invention makes the sampling tube in a sealed state through the close fit between the limiting groove and the sampling tube, thereby preventing the accidental loss of the sample due to the closed mouth at the bottom of the sampling tube being not closed tightly or the gravel being stuck, and at the same time plays a good supporting role for the bottom end of the sampling tube, preventing the top of the sampling tube from being separated from the turntable during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a cross-sectional structural schematic diagram of the front side of the present invention;

[0024] Figure 3 For the present invention Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0025] Figure 4 For the present invention Figure 2 A schematic diagram of the local enlarged structure at B in the middle;

[0026] Figure 5 It is a structural schematic diagram of the turntable of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the disc of the present invention;

[0028] Figure 7 is a schematic structural diagram of the first vertical plate of the present invention;

[0029] Figure 8 It is a schematic diagram of the internal structure of the housing of the present invention;

[0030] Fig. 9 For the present invention Figure 8 A schematic diagram of the local enlarged structure at C in the middle;

[0031] Fig.10 It is a structural schematic diagram of the rotating wheel of the present invention;

[0032] Fig.11 It is a structural schematic diagram of the first movable block of the present invention.

[0033] Fig.12 It is a schematic diagram of the exploded structure of the second vertical plate, the sampling tube, the first movable block and the water-absorbing resin block of the present invention.

[0034] In the figure: 1, bottom plate; 2, housing; 3, first power mechanism; 31, motor; 32, vertical axis; 33, rotating block; 4, first vertical rod; 5, rotating wheel; 6, second vertical rod; 7, rotating disk; 8, first vertical plate; 9, second vertical plate; 10, reset mechanism; 101, first groove; 102, moving block; 103, vertical rod; 104, first spring; 11, sampling tube; 12, limit block; 13, blocking mechanism; 131, second groove; 132, stopper; 133, second spring spring; 14, first movable block; 15, exhaust groove; 16, round hole; 17, second power mechanism; 171, hydraulic cylinder; 172, bottom block; 18, limiting mechanism; 181, third groove; 182, moving plate; 183, second movable block; 184, third spring; 19, fourth groove; 20, third movable block; 21, fourth spring; 22, absorbent resin block; 23, disc; 24, limiting groove; 25, information processing unit; 26, sonar device; 27, probe. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] like Figures 1 to 12 As shown, an embodiment of the present invention provides a seabed specimen sampling device based on sonar positioning technology, comprising a bottom plate 1, a shell 2 and a first power mechanism 3 are fixedly installed on the top of the bottom plate 1, and the first power mechanism 3 is located inside the shell 2, a first vertical rod 4 is movably installed on the top of the bottom plate 1, a rotating wheel 5 is fixedly installed on the top of the first vertical rod 4, a second vertical rod 6 is fixedly installed on the top of the rotating wheel 5, a rotating disk 7 is fixedly installed on the top of the second vertical rod 6, a first vertical plate 8 and a second vertical plate 9 are fixedly installed on the top of the bottom plate 1, the first vertical plate 8 is located at the left end of the second vertical plate 9, and the first vertical plate 8 and the second vertical plate 9 are both provided with a complex A positioning mechanism 10, a sampling tube 11 is movably sleeved inside the turntable 7 and the bottom end of the sampling tube 11 extends downward. There are five sampling tubes 11, and the five sampling tubes 11 are evenly distributed below the turntable 7. Limiting blocks 12 located inside the turntable 7 are fixedly installed on both sides of the sampling tube 11. A blocking mechanism 13 is provided inside the bottom plate 1. A first movable block 14 is movably installed inside the sampling tube 11, and an exhaust groove 15 is provided on the outer surface of the first movable block 14. A circular hole 16 is provided through the surface of the turntable 7. A second power mechanism 17 is fixedly installed on the top of the housing 2, and a limiting mechanism 18 is provided inside the turntable 7.

[0037] The working principle and beneficial effects of the above technical solution are as follows: the staff puts the shell 2 into the area to be collected, and monitors the bottom in real time through the sonar device 26, so as to adjust the position of the shell 2 so that the shell 2 falls to the designated position for sampling. When the bottom plate 1 stably contacts the seabed, the second power mechanism 17 is started. Due to the operation of the second power mechanism 17, the sampling tube 11 located between the first vertical plate 8 and the second vertical plate 9 will be pressed down through the circular hole 16, so that the sampling tube 11 moves downward and disengages from the turntable 7, so that the limit block 12 enters the first vertical plate 8 and the second vertical plate 9. At this time, the first spring 104 is squeezed and is in an elastic compression state, and the bottom end of the sampling tube 11 passes through the bottom plate 1, and the sampling tube 11 continues to move downward to the sinking point on the seabed. Inside the accumulation, the second power mechanism 17 is started again. Due to the operation of the second power mechanism 17, the sampling tube 11 will be driven to move upward through the magnetic effect between the bottom block 172 and the sampling tube 11. At this time, due to the elastic recovery effect of the first spring 104, an upward thrust will be applied to the sampling tube 11, so that the sampling tube 11 moves upward to reset. At this time, the first power mechanism 3 is started. Due to the operation of the first power mechanism 3, the matching relationship between the rotating block 33 and the rotating wheel 5 will be used to make the rotating block 33 rotate a flat angle and then drive the rotating wheel 5 to rotate 72 degrees, thereby driving the turntable 7 to rotate together through the second vertical rod 6, and then the collected sampling tube 11 is replaced, so that the new sampling tube 11 is rotated to the position of the original sampling tube 11 for subsequent collection work;

[0038] The turntable 7 is driven to rotate intermittently by the first power mechanism 3. By utilizing the characteristics of intermittent motion, the second power mechanism 17 presses down the sampling tube 11 when the turntable 7 stops rotating, so that the sampling tube 11 can collect samples. By utilizing the characteristics of intermittent motion again, the second power mechanism 17 replaces the sampling tube 11 when rotating, thereby achieving the effect of continuously collecting multiple groups of samples, and at the same time greatly increasing the number of samples collected during each dive, thereby improving the sampling efficiency.

[0039] like Figure 2 , 4 , 7 and 11, in one embodiment, a fourth groove 19 is provided inside the sampling tube 11, a third movable block 20 is movably installed inside the fourth groove 19, a fourth spring 21 located at the top of the third movable block 20 is elastically connected inside the fourth groove 19, and a water-absorbing resin block 22 is fixedly installed at the top of the inner cavity of the first movable block 14;

[0040] The working principle and beneficial effects of the above technical solution are as follows: start the turntable 7. Due to the operation of the turntable 7, the sampling tube 11 will be pushed downward through the circular hole 16, so that the sampling tube 11 moves downward. When the bottom end of the sampling tube 11 passes through the bottom plate 1 and contacts the seawater and sediment, the interior of the sampling tube 11 is in a sealed state. When the sampling tube 11 continues to move downward, the air pressure inside the sampling tube 11 will increase, so that the gas inside the sampling tube 11 pushes the first movable block 14 upward to move upward. At this time, the fourth spring 21 is squeezed and is in an elastic compression state. The first movable block 14 moves upward to expose the exhaust groove 15. At this time, the air inside the sampling tube 11 will be discharged to the inside of the housing 2 through the exhaust groove 15, and the sediment will enter the interior of the sampling tube 11 for storage. When the top of the sediment reaches the top of the first movable block 14, the seawater on the surface of the sediment will first contact the water-absorbing resin block 22. After the water-absorbing resin block 22 contacts and absorbs the seawater, it will expand rapidly, thereby blocking the exhaust groove 15 to prevent the sediment from losing.

[0041] By applying upward pressure to the water-absorbent resin block 22, the gas inside the sampling tube 11 is discharged through the exhaust groove 15, and then the exhaust groove 15 is sealed by utilizing the effect of the water-absorbent resin block 22 swelling when it comes into contact with water. Compared with the traditional device, the device utilizes the property of the water-absorbent resin block 22 swelling when it comes into contact with water to seal the exhaust groove 15 through the water-absorbent resin block 22, thereby effectively preventing the loss of the sediment sample collected inside. At the same time, since the exhaust groove 15 is blocked, the interior of the sampling tube 11 is once again sealed, which exerts good suction on the sediment inside the sampling tube 11 and prevents the sediment from accidentally falling off the sampling tube 11.

[0042] like Figure 2 and 6 As shown, in one embodiment, the outer surface of the second vertical rod 6 is movably sleeved with a disc 23 located at the top of the rotating wheel 5, and a limiting groove 24 is provided inside the disc 23. The bottom end of the limiting groove 24 is flush with the bottom of the sampling tube 11, and a notch is left at the right end of the disc 23;

[0043] The working principle and beneficial effects of the above technical solution are as follows: the first power mechanism 3 is started, and the operation of the first power mechanism 3 drives the rotating wheel 5 to rotate, and the rotating wheel 5 drives the rotating disk 7 to rotate, and the rotation of the rotating disk 7 drives the sampling tube 11 to rotate, so that the sampling tube 11 that has undergone the sampling operation rotates to the top of the disc 23 and enters the inside of the limiting groove 24, and the bottom end of the sampling tube 11 is sealed by the limiting groove 24;

[0044] The sampling tube 11 is driven to rotate by the turntable 7, so that the sampling tube 11 containing the sediment sample is rotated to the inside of the limiting groove 24. Compared with the traditional device, the sampling tube 11 is in a sealed state through the close fit between the limiting groove 24 and the sampling tube 11, thereby preventing the accidental loss of the sample due to the closed mouth at the bottom of the sampling tube 11 being stuck, and at the same time, it plays a good supporting role for the bottom end of the sampling tube 11 to prevent the top of the sampling tube 11 from detaching from the turntable 7.

[0045] like Figure 2 As shown, in one embodiment, the second power mechanism 17 includes a hydraulic cylinder 171 located at the top of the housing 2, and the output end of the hydraulic cylinder 171 passes through the housing 2 and is fixedly mounted with a bottom block 172;

[0046] The working principle and beneficial effects of the above technical solution are as follows: due to the operation of the hydraulic cylinder 171, the bottom block 172 will be driven to move up and down, and the bottom block 172 will drive the sampling tube 11 between the first vertical plate 8 and the second vertical plate 9 to move up and down, so that the sampling tube 11 can perform sampling operations.

[0047] like Figure 2 As shown, in one embodiment, the blocking mechanism 13 includes a second groove 131, a stopper 132 and a second spring 133. The second groove 131 is located inside the bottom plate 1. The stopper 132 is movably installed inside the second groove 131. The second spring 133 located at the left end of the stopper 132 is elastically connected inside the second groove 131.

[0048] The working principle and beneficial effects of the above technical solution are as follows: when the turntable 7 drives the sampling tube 11 to move downward, the stopper 132 will be squeezed by the sampling tube 11, so that the two stoppers 132 are squeezed and move to both sides; when the sampling tube 11 moves upward and disengages from the stopper 132, due to the elastic recovery effect of the second spring 133, a thrust will be applied to the stopper 132, so that the stopper 132 is reset.

[0049] like Figure 3 As shown, in one embodiment, the reset mechanism 10 includes a first groove 101, a motion block 102, a vertical rod 103 and a first spring 104. The first groove 101 is opened inside the first vertical plate 8 and the second vertical plate 9. The motion block 102 is slidably installed inside the first groove 101. The vertical rod 103 is fixedly installed at the bottom end of the first groove 101. The top of the vertical rod 103 passes through the motion block 102. The outer surface of the vertical rod 103 is movably sleeved with the first spring 104 elastically connected between the bottom end of the motion block 102 and the bottom end of the first groove 101.

[0050] The working principle and beneficial effects of the above technical solution are as follows: when the sampling tube 11 moves downward, it will drive the sampling tube 11 to move downward along the vertical rod 103. At this time, the first spring 104 is squeezed and is in an elastic compression state. Due to the design of the vertical rod 103, it can play a good limiting role in the operation of the sampling tube 11.

[0051] like Fig. 9 As shown, in one embodiment, the limiting mechanism 18 includes a third groove 181, a moving plate 182, a second movable block 183 and a third spring 184. The third groove 181 is opened inside the turntable 7. The moving plate 182 is movably installed inside the third groove 181. The left end of the moving plate 182 is fixedly installed with the second movable block 183. The left end of the second movable block 183 penetrates the turntable 7 and extends to the inside of the sampling tube 11. The third groove 181 is elastically connected to the third spring 184 located at the right end of the moving plate 182.

[0052] The working principle and beneficial effects of the above technical solution are as follows: when the turntable 7 applies downward pressure to the sampling tube 11, the second movable block 183 will be squeezed and move to the right. At this time, the third spring 184 is squeezed and is in an elastic compression state, so that the sampling tube 11 is separated from the second movable block 183. When the sampling tube 11 is reset, the second movable block 183 will be squeezed again, so that the second movable block 183 enters the interior of the sampling tube 11 under the elastic recovery action of the third spring 184, thereby limiting the sampling tube 11.

[0053] like Fig.10 As shown, in one embodiment, the first power mechanism 3 includes a motor 31, a vertical shaft 32 and a rotating block 33. The motor 31 is located on the top of the base plate 1. The output shaft of the motor 31 is fixedly connected to the vertical shaft 32. The rotating block 33 is fixedly installed on the top of the vertical shaft 32.

[0054] The working principle and beneficial effects of the above technical solution are as follows: start the motor 31. Due to the operation of the motor 31, the vertical shaft 32 will rotate, and the rotating block 33 will be driven to rotate through the vertical shaft 32. Due to the mutual cooperation between the rotating block 33 and the rotating wheel 5, the rotating block 33 will drive the rotating wheel 5 to rotate, and then drive the sampling tube 11 to perform the replacement operation.

[0055] like Fig.11 As shown, in one embodiment, a gap is left between the water-absorbing resin block 22 and the inner surface of the first movable block 14;

[0056] The working principle and beneficial effects of the above technical solution are as follows: due to the design of the gap, before the water-absorbing resin block 22 comes into contact with seawater, the air inside the sampling tube 11 will be discharged through the exhaust groove 15. When encountering seawater, it will expand and block the gap to prevent the loss of sediment samples.

[0057] like Figure 2 and 8 As shown, in one embodiment, a sonar device 26 is fixedly installed at the bottom end of the base plate 1, and an information processing unit 25 is fixedly installed at the top of the turntable 7;

[0058] The working principle and beneficial effects of the above technical solution are as follows: due to the design of the information processing unit 25 and the sonar device 26, when the staff puts the device into the seabed by a winch, since the seabed cannot communicate well with the outside world, the information processing unit 25 and the sonar device 26 are started at this time, and the sonar device 26 radiates sonar to the terrain of the seabed at the bottom of the bottom plate 1. After the sonar device 26 receives the reflected sonar, the information is compared with the topographic map stored inside by the information processing unit 25, and the position of the outer shell 2 is adjusted by the mechanical legs, so that the device moves on the seabed to the same sampling position as the topographic map mark in the processing unit 25, so as to sample the sediment and make the location of sample mining more accurate.

[0059] like Figure 2 and 8 As shown, in one embodiment, a probe 27 is fixedly mounted on the bottom of the base plate 1 , and the spacing between adjacent probes 27 is 1 cm.

[0060] The working principle and beneficial effects of the above technical solution are as follows: when the device winch is lowered into the seabed, the probe 27 will come into contact with the sediment on the seabed. The probe 27 can be used to detect the geotechnical parameters (shear, penetration) and water content of the sediment in situ in real time, so as to find a suitable sampling location and ensure the accuracy of the sampling samples.

[0061] A fidelity device is installed on the top of the shell 2 to ensure that the pressure and temperature inside the shell 2 are in a dynamic stable state, which is conducive to better restoring the integrity of the sample and facilitating the research work of the staff. The outer surface of the device is also provided with mechanical legs to facilitate the device to move freely on the seabed. In addition, the ring lighting device and the panoramic imaging device installed on the device can coordinate with each other to properly adjust the sampling position of the device, so as to facilitate better sampling operations.

[0062] Working principle and usage process:

[0063] The second power mechanism 17 is operated to make the sampling tube 11 move downward and separate from the rotating disk 7. The bottom end of the sampling tube 11 passes through the bottom plate 1 and moves to the sediment inside the seabed. The second power mechanism 17 is started again to drive the sampling tube 11 upward through the bottom block 172. Due to the elastic recovery effect of the first spring 104, the sampling tube 11 moves upward to reset. The rotating block 33 is rotated by a flat angle through the first power mechanism 3, and then the rotating wheel 5 is driven to rotate 72 degrees and the rotating disk 7 is driven to rotate together, thereby replacing the sample tube 11 after collection.

[0064] The sampling tube 11 is moved downward by the turntable 7. When the bottom end of the sampling tube 11 passes through the bottom plate 1 and contacts the seawater and sediment, the sampling tube 11 is in a sealed state and moves downward, so that the gas inside the sampling tube 11 pushes the first movable block 14 upward to expose the exhaust groove 15. At this time, the air inside the sampling tube 11 will be discharged to the inside of the housing 2 through the exhaust groove 15. When the top of the sediment reaches the top of the first movable block 14, the seawater on the surface of the sediment will first contact the water-absorbing resin block 22. After the water-absorbing resin block 22 contacts and absorbs the seawater, it will expand rapidly, thereby blocking the exhaust groove 15.

[0065] The first power mechanism 3 drives the rotating wheel 5 to rotate, and the rotating wheel 5 drives the turntable 7 to rotate. The rotation of the turntable 7 will drive the sampling tube 11 to rotate, so that the sampling tube 11 that has undergone the sampling operation rotates to the top of the disc 23 and enters the limiting groove 24, and the bottom end of the sampling tube 11 is sealed by the limiting groove 24.

[0066] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0067] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A seabed specimen sampling device based on sonar positioning technology, comprising a bottom plate (1), characterized in that: The top of the bottom plate (1) is fixedly mounted with a housing (2) and a first power mechanism (3), and the first power mechanism (3) is located inside the housing (2); the top of the bottom plate (1) is movably mounted with a first vertical rod (4); the top of the first vertical rod (4) is fixedly mounted with a rotating wheel (5); the top of the rotating wheel (5) is fixedly mounted with a second vertical rod (6); the top of the second vertical rod (6) is fixedly mounted with a rotating disk (7); the top of the bottom plate (1) is fixedly mounted with a first vertical plate (8) and a second vertical plate (9); the first vertical plate (8) and the second vertical plate (9) are both provided with a reset mechanism (10); the rotating disk (7) is fixedly mounted with a first vertical plate (8) and a second vertical plate (9); ) is movably sleeved with a sampling tube (11) and the bottom end of the sampling tube (11) extends downward, both sides of the sampling tube (11) are fixedly mounted with limit blocks (12) located inside the turntable (7), a blocking mechanism (13) is provided inside the bottom plate (1), a first movable block (14) is movably mounted inside the sampling tube (11), an exhaust groove (15) is provided on the outer surface of the first movable block (14), a circular hole (16) is provided through the surface of the turntable (7), a second power mechanism (17) is fixedly mounted on the top of the housing (2), and a limit mechanism (18) is provided inside the turntable (7); A fourth groove (19) is provided inside the sampling tube (11), a third movable block (20) is movably mounted inside the fourth groove (19), a fourth spring (21) located at the top of the third movable block (20) is elastically connected inside the fourth groove (19), and a water-absorbing resin block (22) is fixedly mounted on the top of the inner cavity of the first movable block (14); A gap is left between the water-absorbing resin block (22) and the inner surface of the first movable block (14); The first power mechanism (3) comprises a motor (31), a vertical shaft (32) and a rotating block (33); the motor (31) is located on the top of the bottom plate (1); the output shaft of the motor (31) is fixedly connected to the vertical shaft (32); the top of the vertical shaft (32) is fixedly mounted with a rotating block (33); the rotating block (33) and the rotating wheel (5) cooperate with each other, and the rotating block (33) drives the rotating wheel (5) to rotate, thereby driving the sampling tube (11) to perform a replacement operation; The second power mechanism (17) comprises a hydraulic cylinder (171) located at the top of the housing (2); the output end of the hydraulic cylinder (171) passes through the housing (2) and is fixedly mounted with a bottom block (172); the operation of the hydraulic cylinder (171) drives the bottom block (172) to perform lifting movement, and the bottom block (172) drives the sampling tube (11) between the first vertical plate (8) and the second vertical plate (9) to perform lifting movement, so that the sampling tube (11) performs a sampling operation.

2. The seabed specimen sampling device based on sonar positioning technology according to claim 1 is characterized in that: The outer surface of the second vertical rod (6) is movably sleeved with a disc (23) located on the top of the rotating wheel (5), and a limiting groove (24) is provided inside the disc (23). The bottom end of the limiting groove (24) is flush with the bottom of the sampling tube (11), and a notch is left at the right end of the disc (23).

3. The seabed specimen sampling device based on sonar positioning technology according to claim 1 is characterized by: The blocking mechanism (13) comprises a second groove (131), a stopper (132) and a second spring (133); the second groove (131) is located inside the bottom plate (1); the stopper (132) is movably installed inside the second groove (131); and the second spring (133) located at the left end of the stopper (132) is elastically connected inside the second groove (131).

4. The seabed specimen sampling device based on sonar positioning technology according to claim 1 is characterized by: The reset mechanism (10) comprises a first groove (101), a moving block (102), a vertical rod (103) and a first spring (104); the first groove (101) is opened inside the first vertical plate (8) and the second vertical plate (9); the moving block (102) is slidably mounted inside the first groove (101); the vertical rod (103) is fixedly mounted at the bottom end of the first groove (101); the top of the vertical rod (103) passes through the moving block (102); and the outer surface of the vertical rod (103) is movably sleeved with a first spring (104) elastically connected between the bottom end of the moving block (102) and the bottom end of the first groove (101).

5. The seabed specimen sampling device based on sonar positioning technology according to claim 1 is characterized in that: The limiting mechanism (18) comprises a third groove (181), a moving plate (182), a second movable block (183) and a third spring (184); the third groove (181) is opened inside the rotating disk (7); the moving plate (182) is movably mounted inside the third groove (181); the second movable block (183) is fixedly mounted at the left end of the moving plate (182); the left end of the second movable block (183) passes through the rotating disk (7) and extends to the inside of the sampling tube (11); the inside of the third groove (181) is elastically connected to the third spring (184) located at the right end of the moving plate (182).

6. The seabed specimen sampling device based on sonar positioning technology according to claim 1 is characterized by: A sonar device (26) is fixedly mounted on the bottom end of the base plate (1), an information processing unit (25) is fixedly mounted on the top of the turntable (7), and probes (27) are fixedly mounted on the bottom of the base plate (1), with the spacing between adjacent probes (27) being 1 cm.

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