Device and method for collecting columnar samples of submarine sediments

Abstract

The invention belongs to the technical field of sample collection, and particularly relates to a seabed sediment columnar sample collection device and method. The collecting device comprises a rectangular-ambulatory-plane-shaped bearing base, bearing frames are installed on the bearing base, the multiple bearing frames are jointly connected with a circular base disc located at the center position above the bearing base, a pressure relief sampling mechanism is arranged on the circular base disc, and a height difference exists between the circular base disc and the bearing base. The pressure relief sampling mechanism comprises a circular sampling tube, and an opening of the sampling tube faces the bearing base and is coaxial with the circle center of the circular basal disc; a sawtooth annular disc with the same shape and size as the sampling tube is also mounted at the opening of the sampling tube. According to the invention, the unsmooth sample removal caused by large friction force between the inner wall of the sampling tube and a sample can be avoided through the removal-assisting molding device, so that the sample can be removed smoothly and completely, the sample removal difficulty of the sample is reduced, and the use effect of the device is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of sediment collection, and in particular relates to a device and method for collecting seabed sediment columnar samples. Background Art

[0002] Seafloor sediments are formed by the convergence of terrestrial, biological, volcanic, and cosmic materials. They are classified into various types based on particle size, composition, and origin. It is a general term for materials deposited at the bottom of the ocean. Sampling tubes are generally used to collect columnar samples.

[0003] After the existing device completes the collection operation using the sampling tube, since the collected samples often contain some sticky solid matter, the sample will be significantly more difficult to remove from the sampling tube due to the large friction between the inner wall of the sample and the sample. At the same time, if the sample removal operation is forced, it will also cause damage to the sample structure, which means that the sample separated from the sampling tube cannot be completely formed, thereby reducing the use effect of the device and making the device more limited when used. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a device and method for collecting seabed sediment columnar samples, which effectively solves the problems in the above background technology.

[0005] To achieve the above object, the first aspect of the present invention provides the following technical solutions: A device for collecting columnar samples of seabed sediments, comprising a rectangular bearing base; a bearing frame is installed on the bearing base, and several bearing frames are commonly connected to a circular base located at the center position above the bearing base, and a pressure release sampling mechanism is arranged on the circular base, and the pressure release sampling mechanism is used to collect seabed sediments; there is a height difference between the circular base and the bearing base; the pressure release sampling mechanism comprises a circular sampling tube, and the opening of the sampling tube faces the bearing base and is coaxial with the center of the circular base; a serrated annular disk with the same shape and size as the sampling tube is also installed at the opening of the sampling tube; a plastic release aid is also arranged on the sampling tube, and the plastic release aid is used to perform sample release operations on the sample; a retaining tooth ring is also installed at a certain height on the top of the sampling tube, and a compound rotary drilling structure is arranged on the retaining tooth ring, and the compound rotary drilling structure is used to drive the sampling tube to rotate.

[0006] Preferably, the pressure release sampling mechanism includes a release screw rod which is arranged through the top of the circular base and extends downward, and the release screw rod is rotatably arranged with the circular base plate; a release ring located at the bottom of the circular base plate is threadedly installed on the release screw rod, and a plurality of bent square plates are installed on the release ring, and the plurality of bent square plates are commonly connected to an annular base, and the annular base is coaxial with the center of the sampling tube; a plurality of rotating guide seats are fixedly installed on the inner side wall of the annular base.

[0007] Preferably, a driving motor is also installed on the top of the circular base, and the output end of the driving motor is rotatably connected to the top of the release screw; a guide cylinder is installed on the top of the bent square plate, and the guide cylinder passes through the bottom of the circular base and the two are slidably matched; a rotating ring is fixedly installed on the outer wall of the sampling tube, and the rotating ring is embedded in the rotating guide seat and the two are slidably matched.

[0008] Preferably, the compound rotary drilling structure comprises a retaining frame arranged on the bent square plate, a rotary motor is installed in the retaining frame, a rotary gear is installed on the output end of the rotary motor, and the rotary gear is meshingly connected with the retaining gear ring.

[0009] Preferably, the demolding aid device includes a support ring plate arranged at a distance from the top of the sampling tube, a plurality of rotating shafts are installed at the bottom of the support ring plate, a winding reel is also installed at the end of the rotating shaft away from the support ring plate, and a steel cable is wound on the winding reel; winding motors with the same number and position as the rotating shafts are also installed on the top of the support ring plate, and the output end of the winding motor is rotatably connected to the rotating shaft; a clockwork spring is installed on the rotating shaft, and the end point of the clockwork spring is connected to the bottom of the support ring plate.

[0010] Preferably, the sampling tube is slidably connected with a pressing circular plate that fits with the inner wall of the sampling tube, and a positioning cylinder is fixedly installed on the side of the pressing circular plate close to the supporting ring plate, and the positioning cylinder passes through and extends out of the top of the sampling tube; a positioning spring is sleeved on the positioning cylinder, one end of the positioning spring is fixedly connected to the top of the pressing circular plate, and the other end is fixedly connected to the inner top surface of the sampling tube; a plurality of lifting rings are also installed at the end of the positioning cylinder away from the sampling tube, and a lifting hook is connected to the lifting ring; a plurality of guide pulleys with the same number and position as the winding reel are also installed on the supporting ring plate; the corresponding steel cables pass around the guide pulleys and are connected to the lifting hooks; the winding reel moves the positioning cylinder along the Y-axis when lifting the positioning cylinder; a side of the pressing circular plate away from the serrated annular disk and a side of the sampling tube close to the serrated annular disk are both provided with contacts, and the two contacts are electrically connected.

[0011] Preferably, a stop unit is also provided on the sampling tube; the stop unit includes an anti-movement base arranged on the top of the sampling tube, an anti-movement rod is penetrated and connected on the side of the anti-movement base close to the positioning column, and the anti-movement rod is slidably matched with the anti-movement base; an anti-movement spring is sleeved on the anti-movement rod, one end of the anti-movement spring is fixedly connected to the anti-movement base, and the other end is connected to an anti-movement limit plate, and the anti-movement limit plate is fixedly connected to the end of the anti-movement rod away from the positioning column; a plurality of anti-movement slots are arranged equidistantly along the Y-axis on the side of the positioning column close to the anti-movement base, and the anti-movement slots are located on the moving path of the anti-movement rod.

[0012] A second aspect of the present invention provides a method for collecting a columnar sample of seabed sediment, the collection method being performed using the above-mentioned collection device, and comprising the following steps: S001. Operate the pressure release sampling mechanism to enable the sampling tube to continuously move downward at the seabed sediment; S002, the opening of the sampling tube is sunken into the seabed sediment, and the seabed sediment is taken into the sampling tube, thereby completing the collection operation of the seabed sediment; S003. The serrated annular disk is provided to reduce the impact of hard obstacles on the downward movement of the sampling tube.

[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) The reset of the positioning spring can drive the pressing circular plate to reset and move it toward the open end of the sampling tube, so that the sample collected in the sampling tube can be squeezed out. The downward pressure on the pressing circular plate can also be artificially applied to increase the extrusion speed of the sample. The seabed sediment in the sampling tube is columnar. Under the action of the extrusion pressure, the particle spacing between the samples is reduced, making the internal structure of the sample denser, so that the sample can maintain this shape after being squeezed out, which is used to improve the molding effect of the sample and avoid damage to the sample structure during the sample removal process, resulting in the sample being unable to be completely formed. The collection and use effect of the device is improved, and the friction between the inner wall of the sampling tube and the sample is large, which leads to the inability to smoothly remove the sample, thereby reducing the difficulty of sample removal.

[0014] (2) The anti-movement spring can drive the anti-movement rod to move when resetting, so that it enters the anti-movement slot, thereby limiting the positioning column to prevent the sample collected in the sampling tube from being separated or dislocated due to the resetting of the pressing circular plate when the sampling tube is recovered.

[0015] (3) The present invention allows seabed sediments to quickly enter the sampling tube under the action of the suction force generated in the sampling tube, and at the same time, the gas above can be discharged through external pipes, etc., thereby improving the use effect of the device. When the contact pieces at the pressing circular plate and the sampling tube are in contact, it indicates that the pressing circular plate has moved into place. By sending a signal to the control center, the winding motor is no longer operated, so that the pressing circular plate can stay in the current position to avoid dislocation and the separation of the collected samples.

[0016] (4) The present invention can drive the sampling tube at the annular base to move downward under the action of the bent square plate, so that it continues to move downward and contact the seabed sediment, so that the sampling tube exerts a downward pressure on the seabed sediment, so that the sampling tube enters the seabed sediment, so that it can be collected, thereby completing the collection operation of the seabed sediment, so that the seabed sediment can enter the sampling tube to form a column, and under the action of the serrated annular disk, the relatively hard surface can be effectively broken, so that the sampling tube can move downward smoothly, avoiding the seabed sediment being too hard to cause the sampling tube to be unable to move downward, thereby failing to complete the collection operation of the seabed sediment.

[0017] (5) When the sampling tube is collecting seabed sediments, the folding L plate can be folded up along the Y axis to avoid affecting the collection operation of the sampling tube. At this time, several knocking blocks are gathered at the top of the side wall of the sampling tube, and this position is constantly knocked by the knocking blocks, so that the sample in the sampling tube vibrates, and the structure between the samples is continuously reduced, so that the components in the sample are evenly distributed, which is used to increase the fluidity of the sample in the tube, avoid the gaps between several objects between the samples and occupy space, increase the collection capacity of the sampling tube for samples, and improve the use effect of the device; when the device needs to remove the sample in the sampling tube, the folding L plate can be unfolded, so that several knocking blocks are evenly distributed along the Y axis, and several are evenly distributed around the outer wall of the sampling tube, so that several knocking blocks continuously knock on the outer wall of the sampling tube, so that the tube is in a state of continuous vibration, which not only avoids the sample in the tube from adhering to the inner wall of the sampling tube due to its high viscosity and making it difficult to fall off, but also improves the efficiency and effect of the device for removing the collected samples, and at the same time increases the smoothness of the sample during removal, so that the sample can be smoothly formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the retaining gear ring in the present invention; Figure 3 It is a structural schematic diagram of the folding L-plate in the present invention; Figure 4 It is a schematic diagram of the structure of the sawtooth annular disk in the present invention; Figure 5 It is an exploded view of the rotating ring in the present invention; Figure 6 It is a structural schematic diagram of the supporting ring plate in the present invention; Figure 7 It is a cross-sectional view of the guide square tube in the present invention; Figure 8 is an internal diagram of the sampling tube of the present invention; Fig. 9 It is a cross-sectional view of the gas-making square box in the present invention.

[0020] In the figure: 1, bearing base; 2, bearing frame; 3, circular base plate; 4, sampling tube; 5, sawtooth annular disk; 6, retaining tooth ring; 7, release screw; 8, release ring; 9, bending square plate; 10, annular base; 11, rotating guide seat; 12, driving motor; 13, guide cylinder; 14, rotating ring; 15, retaining frame; 16, rotating motor; 17, rotating gear; 18, support ring plate; 19, rotating shaft; 20, winding drum; 21, steel cable; 22, winding motor; 23, spring; 24, pressing circular plate; 25, positioning column; 26, positioning spring; 27, lifting ring; 28, lifting hook; 29 , guide pulley; 30, contact piece; 31, driving disc; 32, displacement cylinder; 33, displacement rectangular block; 34, displacement slide; 35, limit cylinder; 36, limit base; 37, extrusion square plate; 38, gas square box; 39, air outlet hose; 40, folding L plate; 41, guide square tube; 42, guide base; 43, U-shaped pipe; 44, telescopic pipe; 45, gas supply hose; 46, guide square column; 47, knocking block; 48, guide slide column; 49, auxiliary base plate; 50, auxiliary spring; 51, anti-movement base; 52, anti-movement plug rod; 53, anti-movement spring; 54, anti-movement limit plate; 55, anti-movement slot. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] like Figures 1 to 9 As shown, the seabed sediment columnar sample collection device of the present invention comprises a rectangular bearing base 1, a bearing frame 2 is installed on the bearing base 1, and a plurality of bearing frames 2 are commonly connected to a circular base plate 3 located at the center position above the bearing base 1, and a pressure release sampling mechanism is arranged on the circular base plate 3, and the pressure release sampling mechanism is used to collect seabed sediments; There is a height difference between the circular base plate 3 and the bearing base 1; the pressure release sampling mechanism includes a circular sampling tube 4, the opening of the sampling tube 4 faces the bearing base 1 and is coaxial with the center of the circular base plate 3; a sawtooth annular disk 5 of the same shape and size as the sampling tube 4 is also installed at the opening of the sampling tube 4; a plastic release assisting device is also provided on the sampling tube 4, and the plastic release assisting device is used to perform a sample release operation on the sample; a retaining tooth ring 6 is also installed at a certain height on the top of the sampling tube 4, and a compound rotary drilling structure is provided on the retaining tooth ring 6, and the compound rotary drilling structure is used to drive the sampling tube 4 to rotate; The compound rotary drilling structure includes a retaining frame 15 arranged on the bent square plate 9, a rotating motor 16 is installed in the retaining frame 15, a rotating gear 17 is installed on the output end of the rotating motor 16, and the rotating gear 17 is meshed and connected with the retaining gear ring 6.

[0023] When the sampling tube 4 encounters hard gravel or a relatively hard object during the sampling process, which makes it impossible for the sampling tube 4 to continue to move downward through the pressure release sampling mechanism, the sampling tube 4 will be stuck in the current position. At this time, the rotating motor 16 is started to drive the rotating gear 17 to rotate at its output end, and then it is meshed with the retaining gear ring 6, so that the sampling tube 4 on it is limited and rotated in a plurality of rotating guide seats 11 through the rotating ring 14, and then the sampling tube 4 is rotated, so that the serrated annular disk 5 at its output end is rotated, so that the hard gravel or object in the area where the sampling tube 4 is stuck can be broken and crushed, so as to remove the obstacles in the area and prevent the obstacles from affecting the sampling. The downward movement of the sample tube 4 causes collection obstruction, which improves the collection effect and efficiency of the device; at the same time, the rotation direction of the sampling tube 4 and whether it is a low-frequency reciprocating rotation can be controlled by the operator to control the rotary motor 16, reducing the limitations of the device during collection; and the device can be fixed by the conical threaded bodies around the bottom of the supporting base 1 during the collection process, avoiding the sampling tube 4 from being displaced during use, which may affect the collection accuracy and collection content, so that the sampling tube 4 can collect seabed sediments. After the seabed sediments enter the sampling tube 4, since the sampling tube 4 is round, columnar seabed sediments can be collected.

[0024] In some embodiments, the pressure release sampling mechanism includes a release screw 7 that is arranged through the top of the circular base 3 and extends downward, and the release screw 7 is rotatably arranged with the circular base 3; a release ring 8 located at the bottom of the circular base 3 is threadedly installed on the release screw 7, and a plurality of bent square plates 9 are installed on the release ring 8, and the plurality of bent square plates 9 are commonly connected to an annular base 10, and the annular base 10 is coaxial with the center of the sampling tube 4; a plurality of rotating guide seats 11 are fixedly installed on the inner side wall of the annular base 10; A driving motor 12 is also installed on the top of the circular base 3, and the output end of the driving motor 12 is rotatably connected to the top of the release screw 7; a guide cylinder 13 is installed on the top of the bent square plate 9, and the guide cylinder 13 passes through the bottom of the circular base 3 and the two are slidably matched; a rotating ring 14 is fixedly installed on the outer wall of the sampling tube 4, and the rotating ring 14 is embedded in the rotating guide seat 11 and the two are slidably matched.

[0025] It should be noted that after placing the device in the area to be collected, the drive motor 12 is started so that its output end drives the release screw 7 to rotate, and then the threaded release ring 8 moves downward, so that the bent square plate 9 on it moves within the limit position on the circular base plate 3 through the guide cylinder 13, so that the release ring 8 is limited and moved downward, and under the action of the bent square plate 9, the sampling tube 4 at the annular base 10 is driven to move downward, so that it continues to move downward and contact with the seabed sediments, so that the sampling tube 4 exerts a downward pressure on the seabed sediments, so that the sampling tube 4 enters the seabed sediments, so that it can be collected, thereby completing the collection operation of the seabed sediments, so that the seabed sediments can enter the sampling tube 4 to form a columnar shape, and under the action of the serrated annular disk 5, the harder surface can be effectively broken, so that the sampling tube 4 can move downward smoothly, avoiding the seabed sediments being too hard to cause the sampling tube 4 to be unable to move downward, thereby failing to complete the collection operation of the seabed sediments.

[0026] In some other embodiments, the plastic-release assisting device includes a support ring plate 18 disposed at a distance from the top of the sampling tube 4, a plurality of rotating shafts 19 are installed at the bottom of the support ring plate 18, and a winding drum 20 is also installed at one end of the rotating shaft 19 away from the support ring plate 18, and a steel cable 21 is wound around the winding drum 20; a winding motor 22 having the same number and position as the rotating shaft 19 is also installed on the top of the support ring plate 18, and the output end of the winding motor 22 is rotatably connected to the rotating shaft 19; a clockwork spring 23 is installed on the rotating shaft 19, and the end point of the clockwork spring 23 is connected to the bottom of the support ring plate 18; A pressing circular plate 24 that fits the inner wall of the sampling tube 4 is slidably connected inside the sampling tube 4. A positioning column 25 is fixedly installed on one side of the pressing circular plate 24 close to the supporting ring plate 18. The positioning column 25 penetrates and extends out of the top of the sampling tube 4. A positioning spring 26 is sleeved on the positioning column 25. One end of the positioning spring 26 is fixedly connected to the top of the pressing circular plate 24, and the other end is fixedly connected to the inner top surface of the sampling tube 4. A plurality of hanging rings 27 are also installed on the end of the positioning column 25 away from the sampling tube 4, and a hanging hook 28 is connected to the hanging ring 27. A plurality of guide pulleys 29 having the same number and position as the winding drum 20 are also installed on the support ring plate 18; the corresponding steel cables 21 pass around the guide pulleys 29 and are connected to the hook 28; the winding drum 20 moves along the Y-axis when the positioning column 25 is lifted; a contact piece 30 is provided on the side of the pressing circular plate 24 away from the sawtooth annular disk 5 and on the side of the sampling tube 4 close to the sawtooth annular disk 5, and the two contact pieces 30 are electrically connected.

[0027] When the device is collecting seabed sediments, the winding motor 22 is started, so that its output end drives the rotating shaft 19 to rotate, and then the winding drum 20 on the rotating shaft 19 rotates, so that the spring spring 23 originally in the buffer state is gradually reset, and the winding drum 20 reels the steel cable 21, so that the hook 28 is pulled upward under the action of the guide pulley 29, so that it drives the lifting ring 27 to move upward, thereby driving the positioning column 25 on the lifting ring 27 to move upward, so that it moves to the side of the sampling tube 4 away from its opening end, so as to drive the pressing circular plate 24 in the sampling tube 4. The limit moves upward, so that the positioning spring 26 is in a buffer state, so that the area near the opening end of the sampling tube 4 with the pressing circular plate 24 as the dividing line in the sampling tube 4 will generate suction, which is convenient for sucking the seabed sediment at the opening into the sampling tube 4, avoiding the accumulation of seabed sediment at the opening of the sampling tube 4 to affect the collection efficiency, and at the same time shortening the time required for the device to collect seabed sediments, improving the collection effect of the device, so that the seabed sediments can quickly enter the sampling tube 4 under the action of the suction generated in the sampling tube 4, and at the same time, the gas above can be discharged through external pipes.

[0028] It should be noted that when the pressing circular plate 24 and the contact pieces 30 at the sampling tube 4 are in contact, it indicates that the pressing circular plate 24 has moved to the position, and by sending a signal to the control center, the winding motor 22 is no longer operated, so that the pressing circular plate 24 can stay in the current position to avoid dislocation and separation of the collected sample; At the same time, when it is necessary to remove the sample in the sampling tube 4, the winding motor 22 is no longer driven, and because the strength of the positioning spring 26 is greater than that of the spring spring 23, the resetting of the positioning spring 26 can drive the pressing circular plate 24 to reset and move it toward the open end of the sampling tube 4, so that the sample collected in the sampling tube 4 can be squeezed out, and the downward pressure on the pressing circular plate 24 can be artificially applied to increase the extrusion speed of the sample. The seabed sediment is columnar in the sampling tube 4. Under the action of the extrusion pressure, the particle distance between the samples is reduced, making the internal structure of the sample denser, so that the sample can maintain the shape after being extruded, which is used to improve the molding effect of the sample, avoid damage to the sample structure during the stripping process, resulting in the inability to fully form the detached sample, and avoid the friction between the inner wall of the sampling tube 4 and the sample. The friction is large, resulting in the inability to smoothly remove the sample, reducing the difficulty of sample stripping and reducing the limitations of the device when in use.

[0029] It can be understood that when the sample is released using the demolding device, the sample release operation can be completed either manually or automatically, so that the device can be used in different scenarios with multiple options.

[0030] A driving disc 31 coaxial with the center of the winding reel 20 is installed at the bottom of the winding reel 20 of the present embodiment, and a multiple impact viscosity reduction component is arranged on the driving disc 31 .

[0031] In some embodiments, the impact viscosity reduction component includes a displacement cylinder 32, which is fixedly connected to the bottom edge of the driving disc 31; a displacement rectangular block 33 is also provided at the bottom of the driving disc 31, and a displacement slide 34 extending to the top of the displacement rectangular block 33 is provided at the bottom, and the displacement slide 34 is slidably matched with the displacement cylinder 32; two limiting cylinders 35 are symmetrically installed on the side of the displacement rectangular block 33, and the two limiting cylinders 35 are slidably connected to the limiting base 36, and the limiting base 36 is fixedly installed at the support ring plate 18; the end of the limiting cylinder 35 away from the displacement rectangular block 33 is commonly connected to the extrusion square plate 37; A gas-making box 38 is also installed on the support ring plate 18. One side of the gas-making box 38 is open and the other side is closed. The extrusion square plate 37 is located in the gas-making box 38 and the two are slidably matched. An air outlet valve is provided at the closed part of the gas-making box 38, and an air outlet hose 39 is connected to the air outlet valve. Inlet valves are also provided on both sides of the gas-making box 38.

[0032] The impact viscosity reduction assembly also includes a plurality of folded L-plates 40, the number of which is the same as that of the rotating shaft 19, and the plurality of folded L-plates 40 are equidistantly installed on the outer wall of the annular base 10; the folded L-plates 40 are telescopically arranged along the Y-axis, and a plurality of guide square cylinders 41 facing the sampling tube 4 are installed on the folded L-plates 40, and a guide base 42 is also installed on both sides of the folded L-plates 40, and the tops of the two guide bases 42 are connected to a U-shaped pipe 43; The bottom of the two guide bases 42 is provided with a telescopic pipe 44, which is connected to the U-shaped pipe 43, and the top of the U-shaped pipe 43 is connected to the air outlet hose 39; the telescopic pipe 44 is also equipped with a number of air delivery hoses 45 with the same number as the guide square tubes 41, and the plurality of air delivery hoses 45 are connected to the plurality of guide square tubes 41 in a one-to-one correspondence; a guide square column 46 is slidably connected to the opening of the guide square tube 41, and a knocking block 47 is installed on the guide square column 46, and the outer wall of the sampling tube 4 is located on the moving path of the knocking block 47; a guide sliding column 48 is also installed on the side of the knocking block 47 away from the sampling tube 4, and an auxiliary base plate 49 is slidably connected to the guide sliding column 48, and the auxiliary base plate 49 is installed on the folding L plate 40; An auxiliary spring 50 is sleeved on the guide slide post 48 . One end of the auxiliary spring 50 is fixedly connected to the knocking block 47 , and the other end of the auxiliary spring 50 is fixedly connected to the auxiliary base plate 49 .

[0033] It should be noted that the winding reel 20 has two rotation directions when rotating, one is when collecting samples, and the other is when removing samples. No matter which one, the driving disc 31 will rotate. The difference is that different rotation directions make the appearance of the folding L plate 40 different.

[0034] When the driving disc 31 rotates, the displacement cylinder 32 on it slides back and forth in the displacement slot 34, so that the displacement rectangular block 33 continuously moves back and forth at the limiting base 36 through the limiting cylinder 35, thereby driving the extrusion square plate 37 to continuously move back and forth in the gas making square box 38; When the extrusion square plate 37 moves toward the air outlet valve, the gas in the air making box 38 enters the air outlet hose 39 through the opened air outlet valve, and the air inlet valve is in a closed state at this time; when the extrusion square plate 37 moves away from the air outlet valve, the air outlet valve is closed at this time, and the air inlet valve is in an open state, so that the suction force generated in the air making box 38 can suck the external gas into the air making box 38, waiting for the next movement of the extrusion square plate 37 toward the air outlet valve to send the gas into the air outlet hose 39, so that the air outlet hose 39 can be opened. The gas continuously enters the U-shaped pipe 43, and continuously enters the guide square tube 41 under the action of the telescopic pipe 44 and the gas hose 45. When the gas enters the guide square tube 41, it acts on the guide square column 46, causing it to slide on the guide square tube 41, and then drives the knocking block 47 to move in the direction close to the sampling tube 4 and contact it, thereby knocking the outer wall of the sampling tube 4, causing the guide slide column 48 on the knocking block 47 to reciprocate at the auxiliary base plate 49, so that the auxiliary spring 50 is in a buffering state; When the air outlet valve is closed, the valve (not shown in the figure) provided at the guide square tube 41 is opened, so that the gas in the guide square tube 41 is squeezed out by the reset of the auxiliary spring 50. When the air outlet valve is opened again, the guide square tube 41 receives gas again. This reciprocating process allows the plurality of knocking blocks 47 to continuously knock on the outer wall of the sampling tube 4.

[0035] When the sampling tube 4 is collecting seabed sediments, the folding L plate 40 can be folded up along the Y axis to avoid affecting the collection operation of the sampling tube 4. At this time, the knocking blocks 47 are gathered at the top of the side wall of the sampling tube 4, and the knocking block 47 continuously knocks the position, so that the sample in the sampling tube 4 vibrates, and the structure between the samples is continuously reduced, so that the components in the sample are evenly distributed, so as to increase the fluidity of the sample in the tube, avoid the gaps between the samples and cause the space to be occupied, and improve the collection capacity of the sampling tube 4 for the sample. The use effect of the device: when the device needs to remove the sample in the sampling tube 4, the folding L plate 40 can be unfolded, so that the several knocking blocks 47 are evenly distributed along the Y-axis, and several are evenly distributed around the outer wall of the sampling tube 4, so that the several knocking blocks 47 continuously knock on the outer wall of the sampling tube 4, so that the inside of the tube is in a state of continuous vibration, which not only prevents the sample in the tube from adhering to the inner wall of the sampling tube 4 due to its high viscosity and making it difficult to fall off, but also improves the efficiency and effect of the device on the removal of the collected samples, and at the same time increases the smoothness of the sample during removal, so that the sample can be smoothly formed.

[0036] In some other embodiments, a stopping unit is further provided on the sampling tube 4 .

[0037] Specifically, the stopping unit includes an anti-movement base 51 arranged at the top of the sampling tube 4, and an anti-movement rod 52 is connected to the side of the anti-movement base 51 close to the positioning column 25, and the anti-movement rod 52 is slidably matched with the anti-movement base 51; an anti-movement spring 53 is sleeved on the anti-movement rod 52, one end of the anti-movement spring 53 is fixedly connected to the anti-movement base 51, and the other end is connected to an anti-movement limit plate 54, and the anti-movement limit plate 54 is fixedly connected to the end of the anti-movement rod 52 away from the positioning column 25; a plurality of anti-movement slots 55 are arranged equidistantly along the Y-axis on the side of the positioning column 25 close to the anti-movement base 51, and the anti-movement slots 55 are located on the moving path of the anti-movement rod 52.

[0038] When it is necessary to operate the plastic release device to improve the collection efficiency and effect of the sampling tube 4, the anti-movement limit plate 54 is pulled outward to make the anti-movement plug rod 52 on it move within the anti-movement base 51, so that the anti-movement spring 53 is in a buffering state, and then the anti-movement plug rod 52 is moved away from the positioning column 25, so that the anti-movement plug rod 52 no longer contacts the anti-movement slot 55, thereby releasing the limit setting of the positioning column 25, so that the pressing circular plate 24 can move within the sampling tube 4, thereby improving the collection effect and efficiency of the device; After the collection of seabed sediments is completed, the anti-movement limit plate 54 is loosened, and the anti-movement plug rod 52 is reset and moved under the reset of the anti-movement spring 53, so that it enters the anti-movement slot 55, thereby limiting the positioning column 25, preventing the sample collected in the sampling tube 4 from being separated or dislocated due to the reset of the pressing circular plate 24 when the sampling tube 4 is recovered, thereby improving the use effect of the device; Furthermore, an electric telescopic rod may be provided on the top of the sampling tube 4, and its output end is used to connect with the anti-movement limit plate 54 to automatically control the movement of the anti-movement plug rod 52 so that it can be used according to the operation type of the demolding aid device.

[0039] It should be noted that when it is necessary to remove the sample collected in the sampling tube 4, the operation of moving the anti-movement rod 52 away from the sampling tube 4 is still repeated to release the limiting operation on the pressing circular plate 24, so that the positioning spring 26 is no longer limited. The positioning spring 26 is reset to drive the pressing circular plate 24 to reset and move, so that the sample collected in the sampling tube 4 can be pushed out, thereby completing the sample removal operation.

[0040] The present invention also provides a method for collecting seabed sediment columnar samples, comprising the following steps: S001, operate the pressure release sampling mechanism to make the sampling tube 4 continuously move downward at the seabed sediment; S002, the opening of the sampling tube 4 is sunken into the seabed sediment, and the seabed sediment is taken into the sampling tube 4, thereby completing the collection operation of the seabed sediment; S003. The serrated annular disk 5 is provided to reduce the impact of hard obstacles on the downward movement of the sampling tube 4.

[0041] 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.

[0042] 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 device for collecting columnar samples of seabed sediments, comprising a rectangular support base (1); characterized in that: A bearing frame (2) is installed on the bearing base (1), and a plurality of bearing frames (2) are connected to a circular base plate (3) located at the center position above the bearing base (1). A pressure release sampling mechanism is arranged on the circular base plate (3), and the pressure release sampling mechanism is used to collect seabed sediments; there is a height difference between the circular base plate (3) and the bearing base (1); the pressure release sampling mechanism comprises a circular sampling tube (4), and the opening of the sampling tube (4) faces the bearing base (1) and is coaxial with the center of the circular base plate (3); a sawtooth annular disk (5) of the same shape and size as the sampling tube (4) is also installed at the opening of the sampling tube (4); a plastic release assisting device is also arranged on the sampling tube (4), and the plastic release assisting device is used to perform a sample release operation on the sample; a retaining tooth ring (6) is also installed at a certain height on the top of the sampling tube (4), and a compound rotary drilling structure is arranged on the retaining tooth ring (6), and the compound rotary drilling structure is used to drive the sampling tube (4) to rotate.

2. The device for collecting columnar samples of seabed sediments according to claim 1, characterized in that: The pressure release sampling mechanism comprises a release screw (7) which is arranged through the top of the circular base (3) and extends downward, and the release screw (7) is rotatably arranged with the circular base (3); a release ring (8) located at the bottom of the circular base (3) is threadedly mounted on the release screw (7), and a plurality of bent square plates (9) are mounted on the release ring (8); the plurality of bent square plates (9) are connected together with an annular base (10), and the annular base (10) is coaxial with the center of the sampling tube (4); a plurality of rotating guide seats (11) are fixedly mounted on the inner side wall of the annular base (10).

3. The device for collecting columnar samples of seabed sediments according to claim 2, characterized in that: A driving motor (12) is also installed on the top of the circular base (3), and the output end of the driving motor (12) is rotatably connected to the top of the release screw (7); a guide cylinder (13) is installed on the top of the bent square plate (9), and the guide cylinder (13) passes through the bottom of the circular base (3) and the two are slidably matched; a rotating ring (14) is fixedly installed on the outer wall of the sampling tube (4), and the rotating ring (14) is embedded in the rotating guide seat (11) and the two are slidably matched.

4. The device for collecting columnar samples of seabed sediments according to claim 3, characterized in that: The compound rotary drilling structure comprises a retaining frame (15) arranged on the bent square plate (9), a rotary motor (16) is installed in the retaining frame (15), a rotary gear (17) is installed on the output end of the rotary motor (16), and the rotary gear (17) is meshedly connected with the retaining gear ring (6).

5. The device for collecting columnar samples of seabed sediments according to claim 1, characterized in that: The demolding aid device comprises a support ring plate (18) arranged at a distance from the top of the sampling tube (4); a plurality of rotating shafts (19) are installed at the bottom of the support ring plate (18); a winding drum (20) is installed at one end of the rotating shaft (19) away from the support ring plate (18); a steel cable (21) is wound around the winding drum (20); winding motors (22) of the same number and position as the rotating shafts (19) are also installed at the top of the support ring plate (18); the output end of the winding motor (22) is rotatably connected to the rotating shaft (19); a clockwork spring (23) is installed on the rotating shaft (19), and the end point of the clockwork spring (23) is connected to the bottom of the support ring plate (18).

6. The device for collecting columnar samples of seabed sediments according to claim 5, characterized in that: A pressing circular plate (24) is slidably connected inside the sampling tube (4) and is in contact with the inner wall thereof. A positioning column (25) is fixedly installed on one side of the pressing circular plate (24) close to the supporting ring plate (18). The positioning column (25) passes through and extends out of the top of the sampling tube (4). A positioning spring (26) is sleeved on the positioning column (25). One end of the positioning spring (26) is fixedly connected to the top of the pressing circular plate (24), and the other end is fixedly connected to the inner top surface of the sampling tube (4). A plurality of lifting rings are also installed on the end of the positioning column (25) away from the sampling tube (4). (27), a hook (28) is connected to the lifting ring (27); a plurality of guide pulleys (29) of the same number and position as the winding drum (20) are also installed on the supporting ring plate (18); the corresponding steel cable (21) passes around the guide pulley (29) and is connected to the hook (28); when the winding drum (20) is lifted and positioned, the cylinder (25) is moved along the Y axis; a side of the pressing circular plate (24) away from the sawtooth annular disk (5) and a side of the sampling tube (4) close to the sawtooth annular disk (5) are both provided with contact pieces (30), and the two contact pieces (30) are electrically connected.

7. The device for collecting columnar samples of seabed sediments according to claim 6, characterized in that: The sampling tube (4) is also provided with a stop unit; the stop unit comprises an anti-movement base (51) arranged at the top of the sampling tube (4); an anti-movement plug rod (52) is connected through the side of the anti-movement base (51) close to the positioning column (25); the anti-movement plug rod (52) and the anti-movement base (51) are slidably matched; an anti-movement spring (53) is sleeved on the anti-movement plug rod (52); one end of the anti-movement spring (53) is fixedly connected to the anti-movement base (51), and the other end is connected to an anti-movement limit plate (54); the anti-movement limit plate (54) is fixedly connected to the end of the anti-movement plug rod (52) away from the positioning column (25); a plurality of anti-movement slots (55) are arranged equidistantly along the Y axis on the side of the positioning column (25) close to the anti-movement base (51); the anti-movement slots (55) are located on the moving path of the anti-movement plug rod (52).

8. A method for collecting seabed sediment columnar samples, using the seabed sediment columnar sample collecting device as claimed in claim 1, characterized in that: The steps include: S001. operating the pressure release sampling mechanism to enable the sampling tube (4) to continuously move downward at the seabed sediment; S002, the opening of the sampling tube (4) is sunk into the seabed sediment, and the seabed sediment is taken into the sampling tube (4), thereby completing the collection operation of the seabed sediment; S003. The serrated annular disk (5) is provided to reduce the influence of hard obstacles on the downward movement of the sampling tube (4).

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