Ocean sediment stratified sampling device

Abstract

The invention discloses a marine sediment stratified sampling device, and belongs to the technical field of sampling equipment.The marine sediment stratified sampling device comprises a sampling ship and a sampling mechanism arranged on the sampling ship, the sampling mechanism comprises a mounting base, a lifting mechanism, an outer barrel, an inner barrel, a driving mechanism, a switching mechanism and a plurality of sampling barrels, the inner barrel is rotationally mounted in the outer barrel, and the inner barrel is rotationally mounted in the outer barrel; the driving mechanism and the plurality of sampling barrels are arranged in the inner barrel body; the driving mechanism comprises two driving plates and two bidirectional lead screws, and the driving plates are connected to the outer sides of the two bidirectional lead screws in a threaded and sleeving mode. Through the arrangement of the inner barrel, the outer barrel, the sampling barrel, the driving mechanism and the switching mechanism, layered sampling of the ocean sediments can be achieved, crosstalk among the ocean sediments at different depths is avoided, the detection accuracy is guaranteed, the sampling barrel can conduct sampling detection in different directions at the same depth, transverse comparison is facilitated, and the detection accuracy is improved. After sampling is completed, closed protection on the sample can be achieved, and interference is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of sampling equipment, and in particular to a marine sediment stratified sampling device. Background Art

[0002] With the global climate change and the increase in marine resource development activities, the importance of marine scientific research has become increasingly prominent. As an important carrier for recording changes in the marine environment, the study of marine sediments is of great significance for understanding the history of the earth, climate change, biological evolution, and the impact of human activities on the marine environment.

[0003] However, the traditional marine sediment sampling method is inefficient. During the sampling process, samples from different depths are easily mixed with each other, making the samples susceptible to interference and affecting the accuracy of subsequent detection. Therefore, we propose a marine sediment stratified sampling device to solve this problem. Summary of the invention

[0004] The object of the present invention is to provide a marine sediment stratified sampling device to solve the problems raised in the above background technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A marine sediment stratified sampling device, comprising: a sampling ship and a sampling mechanism arranged on the sampling ship, the sampling mechanism comprising: a mounting seat, a lifting mechanism, an outer cylinder, an inner cylinder, a driving mechanism, a switching mechanism and a plurality of sampling cylinders, the inner cylinder being rotatably mounted inside the outer cylinder, the driving mechanism and the plurality of sampling cylinders being arranged inside the inner cylinder; The driving mechanism comprises: two driving plates and two bidirectional screw rods, the driving plates are threadedly sleeved on the outside of the two bidirectional screw rods, the sampling tube is rotatably mounted in the driving plates, a spiral auger is fixedly mounted inside the sampling tube, and a spiral groove is opened on the outside of the sampling tube; The switching mechanism includes: a first servo motor, a transverse axis and two rotating arms, the transverse axis is fixedly mounted on the output shaft of the driving motor, the rotating arms are fixedly sleeved on the outside of the transverse axis, both ends of the rotating arms are hinged with arc-shaped connecting rods, the other end of the arc-shaped connecting rods is hinged with a square plate, the side of the square plate away from the transverse axis is fixedly mounted with an arc-shaped plate, and the arc-shaped plate is movably inserted in the corresponding spiral groove.

[0006] Preferably, a plurality of slots are provided on the outer side of the sampling tube, a slide plate is slidably installed inside the driving plate, a clamping rod is fixedly installed on the side of the slide plate away from the horizontal axis, the clamping rod is adapted to the slot, a connecting column is fixedly installed on one side of the slide plate, a rotating column is rotatably installed inside the driving plate, a rotating disk is fixedly sleeved on the outer side of the rotating column, two arc-shaped guide holes are provided on one side of the rotating disk, the connecting column is movably inserted in the corresponding arc-shaped guide holes, limit strips are fixedly installed on the top and bottom of the horizontal axis, and the rotating column is slidably sleeved on the outer side of the horizontal axis and the limit strip.

[0007] Preferably, square grooves are provided on the inner walls on both sides of the inner cylinder, the square plates are slidably installed in the corresponding square grooves, square rods are fixedly installed on the top inner wall and the bottom inner wall of the square groove, the square plates are slidably sleeved on the outer sides of the corresponding square rods, and the first servo motor is fixedly installed on the side walls of one of the square grooves.

[0008] Preferably, the driving mechanism further comprises: a driven gear, a driving gear and a driving motor, the driving motor is fixedly mounted on the top inner wall of the inner cylinder, the driving gear is fixedly mounted on the output shaft of the driving motor, the driving gear and the driven gear are meshed with each other, the driven gear is fixedly sleeved on the outside of one of the two-way screw rods, and sprockets are fixedly sleeved on the outsides of the two two-way screw rods, the same chain is installed on the two sprockets for transmission, and the two-way screw rod is rotatably mounted on the side wall of the inner cylinder; A crossbeam is fixedly installed inside the inner cylinder, and the driving plate is slidably sleeved on the outer side of the crossbeam.

[0009] Preferably, the lifting mechanism comprises: a gantry, two lifting rings, a connecting ring and two winding motors, the gantry and the winding motor are both fixedly mounted on the top of the mounting seat, a steel wire rope is fixedly mounted on the top of the lifting ring, a winding wheel is fixedly mounted on the output end of the winding motor, the other end of the steel wire rope is fixedly mounted on the outer side of the corresponding winding wheel, and a hanging plate is fixedly mounted on the bottom of the lifting ring; Slots and vertical grooves are provided on both sides of the bottom of the connecting ring, the hanging plate is slidably installed in the vertical groove, a pressure sensor is fixedly installed on the top inner wall of the vertical groove, the hanging plate movably abuts against the bottom of the pressure sensor, plug plates are fixedly installed on both sides of the top of the outer cylinder, the plug plates are movably inserted in the corresponding slots, a positioning groove is provided on one side of the plug plate, a side plate is slidably installed in the vertical groove, a positioning plate is fixedly installed on one side of the side plate, the positioning plate is movably inserted in the positioning groove, a reset spring and a pull rod are fixedly installed on the other side of the side plate, a pull plate is fixedly installed on the other end of the pull rod, and the other end of the reset spring is fixedly installed on the side wall of the corresponding vertical groove.

[0010] Preferably, the door frame is provided with a shaking mechanism, and the shaking mechanism comprises: a rotating motor and two moving frames, the moving frame is slidably installed in the door frame, a connecting plate is fixedly installed between the two moving frames, two sliding rails are fixedly installed at the bottom of the connecting plate, and a sliding seat is slidably sleeved on the outer side of the sliding rail, the rotating motor is fixedly installed on the top inner wall of the door frame, a rotating plate is fixedly installed on the output shaft of the rotating motor, a round rod is fixedly installed on the top front end of the rotating plate, and the top end of the round rod is rotatably installed at the bottom of the sliding seat, two guide seats are fixedly installed on the top of the door frame, the connecting plate is slidably installed in the two guide seats, and a guide wheel is rotatably installed in the moving frame; Two fixed pulleys are rotatably installed in the door frame, and the steel wire rope is wound around the outer sides of the corresponding guide wheels and fixed pulleys.

[0011] Preferably, a drill bit is fixedly installed at the bottom of the inner cylinder, through holes are opened on both sides of the inner cylinder, the sampling tube passes through the corresponding through holes, and circular holes are opened on both the front and rear sides of the outer cylinder; A second servo motor and a protective cover are fixedly mounted on the top of the outer cylinder. The protective cover is arranged on the outside of the second servo motor. The output shaft of the second servo motor is fixedly mounted on the top of the inner cylinder.

[0012] Preferably, a controller is fixedly mounted on the top of the gantry, and the controller is connected to the drive motor, the first servo motor, the second servo motor, the rotary motor and the pressure sensor signal.

[0013] The beneficial effects of the present invention are: In the present invention, the marine sediment stratified sampling device described above starts two winding motors through a controller to drive two winding wheels to rotate, thereby unwinding the wire rope, so that the inner cylinder and the outer cylinder enter the seawater through the sampling hole and slowly descend, and the overall pulling force of the inner cylinder and the outer cylinder on the lifting ring is monitored by a pressure sensor. When the pressure sensor detects that the pressure becomes smaller, it means that the drill bit begins to contact the marine sediment. At this time, the controller controls the rotating motor and the second servo motor to start, and the rotating motor drives the inner cylinder to reciprocate in a small range, thereby driving the drill bit to reciprocate, thereby realizing The hole is drilled, and the winding motor is used to control the winding wheel to rotate to realize the continuous unwinding of the wire rope, so that the inner cylinder and the outer cylinder continue to move downward. At the same time, the rotating motor drives the rotating plate to rotate, and drives the round rod to perform circular motion. The round rod drives the connecting plate to move back and forth left and right through the cooperation of the sliding seat and the slide rail, and drives the two moving frames and the two guide wheels to move back and forth left and right, so that the ends of the two wire ropes connected to the lifting rings can be synchronously shaken left and right, and asynchronously shaken up and down, thereby driving the outer cylinder to tilt and shake back and forth left and right, and a gap is generated between the drill bit and the marine sediment to facilitate further drilling; In the present invention, a marine sediment stratified sampling device is described, after the sampling barrel reaches a predetermined depth, by starting the second servo motor to drive the inner cylinder to rotate until the through hole on the inner cylinder coincides with the circular hole on the outer cylinder, then starting the driving motor to drive the active gear to rotate, the active gear drives one of the bidirectional screws to rotate by meshing with the driven gear, and drives the other bidirectional screw to rotate synchronously through the transmission of two chains, the two bidirectional screws drive the two driving plates to move away from each other, so that the sampling barrel passes through the through hole and the circular hole and is inserted into the interior of the marine sediment, at the same time, the sampling barrel can extend outward while rotating through the cooperation of the spiral groove and the arc plate, so that the marine sediment enters the sampling barrel through the spiral auger, after the sampling barrel is extended to a preset length, the controller controls the first servo motor to start, and The horizontal axis is driven to rotate, and the horizontal axis drives the two rotating arms to rotate, and drives the arc plate to disengage from the spiral groove through the corresponding arc connecting rod. At the same time, the horizontal axis drives the rotating column and the rotating disk to rotate synchronously through the limit bar, and drives the slide plate to move to the side away from the horizontal axis through the cooperation of the arc guide hole on the rotating disk and the connecting column, so that the clamping rod is clamped into the clamping groove to achieve the locking of the rotation of the sampling barrel. Then the controller controls the driving motor to rotate in the opposite direction, thereby driving the two driving plates to approach each other and driving the sampling barrel to be received into the inner cylinder body. In this process, the sampling barrel will not rotate, so that most of the marine sediments entering the sampling barrel can be retained, and then the second servo motor is started to drive the inner cylinder body to rotate, so that the through hole and the round hole are staggered, thereby achieving the closure of the sampling barrel, which is convenient for the marine sediment samples collected in the subsequent lifting process to be contaminated; In the present invention, the marine sediment stratified sampling device is described, by starting the winding motor to drive the winding wheel to wind up the wire rope, thereby driving the outer cylinder and the inner cylinder to move upward and reset, then pulling the pull plate to drive the positioning plate to disengage from the positioning groove, releasing the fixation of the plug plate, and then the housing removes the outer cylinder to facilitate the removal of the marine sediment sample; In the present invention, the marine sediment stratified sampling device can realize stratified sampling of marine sediments by arranging an inner cylinder, an outer cylinder, a sampling cylinder, a driving mechanism and a switching mechanism, and avoids crosstalk between marine sediments of different depths, thereby ensuring the accuracy of detection. The sampling barrel can perform sampling detection in different directions at the same depth to facilitate lateral comparison, and after the sampling is completed, the sample can be sealed and protected to avoid interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a marine sediment stratified sampling device proposed by the present invention; Figure 2 This is a schematic cross-sectional view of a marine sediment stratified sampling device proposed by the present invention; Figure 3 This is a schematic diagram of the overall three-dimensional structure of the sampling mechanism proposed by the present invention; Figure 4 It is a cross-sectional structural schematic diagram of the sampling mechanism proposed by the present invention; Figure 5 for Figure 4 A partial enlarged view of the Figure 6 for Figure 5 A partial enlarged view of the Figure 7 It is a schematic diagram of the partial three-dimensional structure of the sampling mechanism proposed by the present invention; Figure 8 A schematic diagram of the three-dimensional structure of the shaking mechanism proposed by the present invention; Fig. 9 A schematic diagram of the three-dimensional structure of the switching mechanism proposed by the present invention; Fig.10 It is a schematic diagram of a partial three-dimensional structure of the switching mechanism proposed by the present invention; Fig.11 for Figure 4 Another enlarged view of the part.

[0015] In the figure: 1, outer cylinder; 101, round hole; 102, plug plate; 2, inner cylinder; 201, drill bit; 202, protective cover; 203, second servo motor; 3, sampling cylinder; 301, spiral groove; 302, spiral auger; 303, card slot; 4, driving plate; 401, sprocket; 402, two-way screw rod; 403, driven gear; 404, driving gear; 405, driving motor; 406, crossbeam; 5, first servo motor; 501, horizontal axis; 502, limit strip; 6, rotating arm; 601, arc connecting rod; 602, square plate; 603, arc plate; 604, square rod; 7, rotating column; 701, rotating Moving plate; 702, arc-shaped guide hole; 703, connecting column; 704, slide plate; 705, clamping rod; 8, door frame; 801, fixed pulley; 9, moving frame; 901, connecting plate; 902, guide wheel; 903, guide seat; 904, slide rail; 905, sliding seat; 906, round rod; 907, rotating plate; 908, rotating motor; 10, wire rope; 11, lifting ring; 12, connecting ring; 13, positioning plate; 14, side plate; 15, reset spring; 16, pulling plate; 17, hanging plate; 18, pressure sensor; 19, controller; 20, mounting seat; 21, sampling ship; 22, winding wheel; 23, winding motor. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

[0017] Reference Figure 1 - Fig.11 A marine sediment stratified sampling device, comprising: a sampling ship 21 and a sampling mechanism arranged on the sampling ship 21, the sampling mechanism comprising: a mounting seat 20, a lifting mechanism, an outer cylinder 1, an inner cylinder 2, a driving mechanism, a switching mechanism and a plurality of sampling cylinders 3, the inner cylinder 2 is rotatably mounted inside the outer cylinder 1, the driving mechanism and the plurality of sampling cylinders 3 are both arranged inside the inner cylinder 2, and the bottoms of the sampling ship 21 and the mounting seat 20 are both provided with sampling holes; The driving mechanism includes: two driving plates 4 and two bidirectional screw rods 402, the driving plates 4 are threadedly sleeved on the outer sides of the two bidirectional screw rods 402, the sampling tube 3 is rotatably installed in the driving plates 4, a spiral auger 302 is fixedly installed inside the sampling tube 3, and a spiral groove 301 is opened on the outer side of the sampling tube 3; The switching mechanism includes: a first servo motor 5, a horizontal axis 501 and two rotating arms 6, the horizontal axis 501 is fixedly mounted on the output shaft of the driving motor 405, the rotating arm 6 is fixedly sleeved on the outer side of the horizontal axis 501, both ends of the rotating arm 6 are hinged with an arc connecting rod 601, the other end of the arc connecting rod 601 is hinged with a square plate 602, and an arc plate 603 is fixedly mounted on the side of the square plate 602 away from the horizontal axis 501, and the arc plate 603 is movably inserted in the corresponding spiral groove 301. Through the cooperation of the arc plate 603 and the spiral groove 301, the sample can rotate while moving horizontally.

[0018] In this embodiment, a plurality of slots 303 are provided on the outer side of the sampling tube 3, a slide plate 704 is slidably installed inside the driving plate 4, a clamping rod 705 is fixedly installed on the side of the slide plate 704 away from the horizontal axis 501, the clamping rod 705 is adapted to the slot 303, a connecting column 703 is fixedly installed on one side of the slide plate 704, a rotating column 7 is rotatably installed inside the driving plate 4, a rotating disk 701 is fixedly sleeved on the outer side of the rotating column 7, two arc-shaped guide holes 702 are provided on one side of the rotating disk 701, the connecting column 703 is movably inserted in the corresponding arc-shaped guide holes 702, the top and bottom of the horizontal axis 501 are fixedly installed with the limit strip 502, the rotating column 7 is slidably sleeved on the outer side of the horizontal axis 501 and the limit strip 502, so that the rotating column 7 and the horizontal axis 501 rotate synchronously.

[0019] In this embodiment, square grooves are provided on the inner walls on both sides of the inner cylinder 2, and the square plates 602 are slidably installed in the corresponding square grooves. Square rods 604 are fixedly installed on the top inner wall and the bottom inner wall of the square grooves. The square plates 602 are slidably sleeved on the outer sides of the corresponding square rods 604, and the first servo motor 5 is fixedly installed on the side walls of one of the square grooves.

[0020] In this embodiment, the driving mechanism further includes: a driven gear 403, a driving gear 404 and a driving motor 405, the driving motor 405 is fixedly mounted on the top inner wall of the inner cylinder 2, the driving gear 404 is fixedly mounted on the output shaft of the driving motor 405, the driving gear 404 and the driven gear 403 are meshed with each other, the driven gear 403 is fixedly sleeved on the outer side of one of the two-way screw rods 402, and the outer sides of the two two-way screw rods 402 are fixedly sleeved with sprockets 401, the two sprockets 401 are transmission-mounted with the same chain, and the two-way screw rods 402 are rotatably mounted on the side wall of the inner cylinder 2, thereby realizing the linkage between the two two-way screw rods 402; A crossbeam 406 is fixedly installed inside the inner cylinder 2, and the driving plate 4 is slidably sleeved on the outer side of the crossbeam 406 to guide the horizontal movement of the driving plate 4.

[0021] In this embodiment, the lifting mechanism includes: a door frame 8, two lifting rings 11, a connecting ring 12 and two winding motors 23. The door frame 8 and the winding motor 23 are fixedly mounted on the top of the mounting seat 20. The top of the lifting ring 11 is fixedly mounted with a steel wire rope 10. The output end of the winding motor 23 is fixedly mounted with a winding wheel 22. The other end of the steel wire rope 10 is fixedly mounted on the outer side of the corresponding winding wheel 22. The bottom of the lifting ring 11 is fixedly mounted with a hanging plate 17, and the winding wheel 22 is rotatably mounted in the door frame 8. Slots and vertical grooves are provided on both sides of the bottom of the connecting ring 12, and a hanging plate 17 is slidably installed in the vertical groove. A pressure sensor 18 is fixedly installed on the top inner wall of the vertical groove, and the hanging plate 17 movably abuts against the bottom of the pressure sensor 18. Insert plates 102 are fixedly installed on both sides of the top of the outer cylinder 1, and the insert plates 102 are movably inserted in the corresponding slots. A positioning groove is provided on one side of the insert plate 102, and a side plate 14 is slidably installed in the vertical groove. A positioning plate 13 is fixedly installed on one side of the side plate 14, and the positioning plate 13 is movably inserted in the positioning groove. A reset spring 15 and a pull rod are fixedly installed on the other side of the side plate 14, and a pull plate 16 is fixedly installed on the other end of the pull rod, and the other end of the reset spring 15 is fixedly installed on the side wall of the corresponding vertical groove.

[0022] In this embodiment, a shaking mechanism is provided on the door frame 8, and the shaking mechanism includes: a rotating motor 908 and two moving frames 9, the moving frames 9 are slidably installed in the door frame 8, a connecting plate 901 is fixedly installed between the two moving frames 9, two slide rails 904 are fixedly installed at the bottom of the connecting plate 901, and a sliding seat 905 is slidably sleeved on the outer side of the slide rail 904, the rotating motor 908 is fixedly installed on the top inner wall of the door frame 8, a rotating plate 907 is fixedly installed on the output shaft of the rotating motor 908, a round rod 906 is fixedly installed on the top front end of the rotating plate 907, and the top end of the round rod 906 is rotatably installed on the bottom of the sliding seat 905, two guide seats 903 are fixedly installed on the top of the door frame 8, the connecting plate 901 is slidably installed in the two guide seats 903, and a guide wheel 902 is rotatably installed in the moving frame 9; Two fixed pulleys 801 are rotatably installed in the door frame 8, and the wire rope 10 is wound around the corresponding guide wheel 902 and the outer side of the fixed pulley 801 to guide the wire rope 10.

[0023] In this embodiment, a drill bit 201 is fixedly installed at the bottom of the inner cylinder 2, through holes are opened on both sides of the inner cylinder 2, and the sampling tube 3 passes through the corresponding through holes, and circular holes 101 are opened on both the front and rear sides of the outer cylinder 1; A second servo motor 203 and a protective cover 202 are fixedly mounted on the top of the outer cylinder 1 . The protective cover 202 is arranged on the outside of the second servo motor 203 . The output shaft of the second servo motor 203 is fixedly mounted on the top of the inner cylinder 2 .

[0024] In this embodiment, a controller 19 is fixedly installed on the top of the gantry 8, and the controller 19 is signal-connected to the drive motor 405, the first servo motor 5, the second servo motor 203, the rotating motor 908 and the pressure sensor 18, so that signal reception and command transmission can be achieved through the controller 19.

[0025] In this embodiment, when in use, the two winding motors 23 are started by the controller 19 to drive the two winding wheels 22 to rotate, thereby unwinding the wire rope 10, so that the inner cylinder 2 and the outer cylinder 1 enter the seawater through the sampling hole and slowly descend, and the pressure sensor 18 monitors the pulling force of the inner cylinder 2 and the outer cylinder 1 on the lifting ring 11 as a whole. When the pressure sensor 18 detects that the pressure becomes smaller, it means that the drill bit 201 begins to contact with the marine sediment. At this time, the controller 19 controls the rotating motor 908 and the second servo motor 203 to start, and the rotating motor 908 drives the inner cylinder 2 to reciprocate in a small range, thereby driving the drill bit 201 to reciprocate, thereby achieving drilling, and at the same time through The winding motor 23 controls the winding wheel 22 to rotate to realize the continued unwinding of the steel wire rope 10, so that the inner cylinder 2 and the outer cylinder 1 continue to move downward. At the same time, the rotating motor 908 drives the rotating plate 907 to rotate, and drives the round rod 906 to perform circular motion. The round rod 906 drives the connecting plate 901 to move back and forth left and right through the cooperation of the sliding seat 905 and the slide rail 904, and drives the two moving frames 9 and the two guide wheels 902 to move back and forth left and right, so that the ends of the two steel wire ropes 10 connected to the lifting ring 11 are synchronously shaken left and right, and asynchronously shaken up and down, thereby driving the outer cylinder 1 to tilt and shake back and forth left and right, and a gap is generated between the drill bit 201 and the marine sediment to facilitate further drilling; After the sampling barrel reaches the predetermined depth, the inner cylinder 2 is driven to rotate by starting the second servo motor 203 until the through hole on the inner cylinder 2 coincides with the circular hole 101 on the outer cylinder 1, and then the driving motor 405 is started to drive the active gear 404 to rotate. The active gear 404 drives one of the two-way screw rods 402 to rotate by meshing with the driven gear 403, and drives the other two-way screw rod 402 to rotate synchronously through the transmission of two chains. The two two-way screw rods 402 drive the two driving plates 4 to move away from each other, so that the sampling barrel 3 passes through the through hole and the circular hole 101 and is inserted into the interior of the marine sediment. At the same time, the sampling barrel 3 can extend outward while rotating through the cooperation of the spiral groove 301 and the arc plate 603, so that the marine sediment enters the sampling barrel 3 through the spiral auger 302. After the sampling barrel 3 is extended to a preset length, the controller 19 controls the first servo motor 5 to start and drive the horizontal shaft 501 to rotate, and the horizontal shaft 501 drives the two rotating plates 4 to move away from each other. The movable arm 6 rotates, and drives the arc plate 603 to escape from the spiral groove 301 through the corresponding arc connecting rod 601. At the same time, the horizontal axis 501 drives the rotating column 7 and the rotating disk 701 to rotate synchronously through the limit bar 502, and drives the slide plate 704 to move to the side away from the horizontal axis 501 through the cooperation of the arc guide hole 702 on the rotating disk 701 and the connecting column 703, so that the clamping rod 705 is clamped into the clamping groove 303 to achieve the locking of the rotation of the sampling tube 3. Then the controller 19 controls the driving motor 405 to rotate in the opposite direction, thereby driving the two driving plates 4 to approach each other, driving the sampling tube 3 to be received in the inner cylinder 2, and in this process, the sampling tube 3 will not rotate, so that most of the marine sediments entering the sampling tube 3 can be retained, and then the second servo motor 203 is started to drive the inner cylinder 2 to rotate, so that the through hole and the circular hole 101 are staggered, thereby achieving the closure of the sampling tube 3, which is convenient for the marine sediment samples collected in the subsequent lifting process to be contaminated; The winding motor 23 is started to drive the winding wheel 22 to wind up the wire rope 10, thereby driving the outer cylinder 1 and the inner cylinder to move upward and reset, and then the pull plate 16 is pulled to drive the positioning plate 13 to disengage from the positioning groove, releasing the fixation of the plug plate 102, and then the casing removes the outer cylinder 1 to facilitate the removal of the marine sediment sample.

[0026] The above is a detailed introduction to a marine sediment stratified sampling device provided by the present invention. Specific embodiments are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A marine sediment stratified sampling device, characterized in that: include: A sampling ship (21) and a sampling mechanism disposed on the sampling ship (21), the sampling mechanism comprising: a mounting seat (20), a lifting mechanism, an outer cylinder (1), an inner cylinder (2), a driving mechanism, a switching mechanism and a plurality of sampling cylinders (3), the inner cylinder (2) being rotatably mounted inside the outer cylinder (1), and the driving mechanism and the plurality of sampling cylinders (3) being both disposed inside the inner cylinder (2); The driving mechanism comprises: two driving plates (4) and two bidirectional screw rods (402); the driving plates (4) are threadedly sleeved on the outsides of the two bidirectional screw rods (402); the sampling tube (3) is rotatably mounted inside the driving plates (4); a spiral auger (302) is fixedly mounted inside the sampling tube (3); and a spiral groove (301) is provided on the outside of the sampling tube (3); The switching mechanism comprises: a first servo motor (5), a transverse axis (501) and two rotating arms (6); the transverse axis (501) is fixedly mounted on an output shaft of a driving motor (405); the rotating arms (6) are fixedly sleeved on the outside of the transverse axis (501); both ends of the rotating arms (6) are hinged with arc-shaped connecting rods (601); the other end of the arc-shaped connecting rod (601) is hinged with a square plate (602); a side of the square plate (602) away from the transverse axis (501) is fixedly mounted with an arc-shaped plate (603); and the arc-shaped plate (603) is movably inserted into a corresponding spiral groove (301).

2. A marine sediment stratified sampling device according to claim 1, characterized in that: A plurality of slots (303) are provided on the outside of the sampling tube (3); a slide plate (704) is slidably mounted inside the driving plate (4); a clamping rod (705) is fixedly mounted on the side of the slide plate (704) away from the horizontal axis (501); the clamping rod (705) is matched with the slot (303); a connecting column (703) is fixedly mounted on one side of the slide plate (704); a rotating column (7) is rotatably mounted inside the driving plate (4); a rotating disk (701) is fixedly sleeved on the outside of the rotating column (7); two arc-shaped guide holes (702) are provided on one side of the rotating disk (701); the connecting column (703) is movably inserted into the corresponding arc-shaped guide holes (702); a limit strip (502) is fixedly mounted on the top and bottom of the horizontal axis (501); and the rotating column (7) is slidably sleeved on the outside of the horizontal axis (501) and the limit strip (502).

3. A marine sediment stratified sampling device according to claim 1, characterized in that: The inner walls of both sides of the inner cylinder (2) are provided with square grooves, the square plates (602) are slidably mounted in the corresponding square grooves, square rods (604) are fixedly mounted on the top inner wall and the bottom inner wall of the square grooves, the square plates (602) are slidably sleeved on the outside of the corresponding square rods (604), and the first servo motor (5) is fixedly mounted on the side wall of one of the square grooves.

4. A marine sediment stratified sampling device according to claim 1, characterized in that: The driving mechanism further comprises: a driven gear (403), a driving gear (404) and a driving motor (405); the driving motor (405) is fixedly mounted on the top inner wall of the inner cylinder (2); the driving gear (404) is fixedly mounted on the output shaft of the driving motor (405); the driving gear (404) and the driven gear (403) are meshed with each other; the driven gear (403) is fixedly sleeved on the outside of one of the bidirectional screw rods (402); sprocket wheels (401) are fixedly sleeved on the outsides of the two bidirectional screw rods (402); the two sprocket wheels (401) are transmission-mounted with the same chain; and the bidirectional screw rod (402) is rotatably mounted on the side wall of the inner cylinder (2); A crossbeam (406) is fixedly mounted inside the inner cylinder (2), and the drive plate (4) is slidably sleeved on the outside of the crossbeam (406).

5. A marine sediment stratified sampling device according to claim 1, characterized in that: The lifting mechanism comprises: a door frame (8), two lifting rings (11), a connecting ring (12) and two winding motors (23); the door frame (8) and the winding motor (23) are both fixedly mounted on the top of a mounting seat (20); a steel wire rope (10) is fixedly mounted on the top of the lifting ring (11); a winding wheel (22) is fixedly mounted on the output end of the winding motor (23); the other end of the steel wire rope (10) is fixedly mounted on the outside of the corresponding winding wheel (22); and a hanging plate (17) is fixedly mounted on the bottom of the lifting ring (11); The bottom sides of the connecting ring (12) are provided with slots and vertical slots, the hanging plate (17) is slidably mounted in the vertical slot, a pressure sensor (18) is fixedly mounted on the top inner wall of the vertical slot, the hanging plate (17) movably abuts against the bottom of the pressure sensor (18), the top sides of the outer cylinder (1) are fixedly mounted with plug plates (102), the plug plates (102) are movably plugged into the corresponding slots, a positioning slot is provided on one side of the plug plate (102), a side plate (14) is slidably mounted in the vertical slot, a positioning plate (13) is fixedly mounted on one side of the side plate (14), the positioning plate (13) is movably plugged into the positioning slot, a return spring (15) and a pull rod are fixedly mounted on the other side of the side plate (14), a pull plate (16) is fixedly mounted on the other end of the pull rod, and the other end of the return spring (15) is fixedly mounted on the side wall of the corresponding vertical slot.

6. A marine sediment stratified sampling device according to claim 5, characterized in that: The door frame (8) is provided with a shaking mechanism, and the shaking mechanism comprises: a rotating motor (908) and two moving frames (9), the moving frames (9) are slidably mounted in the door frame (8), a connecting plate (901) is fixedly mounted between the two moving frames (9), two slide rails (904) are fixedly mounted at the bottom of the connecting plate (901), and a sliding seat (905) is slidably sleeved on the outer side of the sliding rail (904), the rotating motor (908) is fixedly mounted on the top inner wall of the door frame (8), a rotating plate (907) is fixedly mounted on the output shaft of the rotating motor (908), a round rod (906) is fixedly mounted at the top front end of the rotating plate (907), and the top end of the round rod (906) is rotatably mounted on the bottom of the sliding seat (905), two guide seats (903) are fixedly mounted on the top of the door frame (8), the connecting plate (901) is slidably mounted in the two guide seats (903), and a guide wheel (902) is rotatably mounted in the moving frame (9); Two fixed pulleys (801) are rotatably mounted inside the door frame (8), and the steel wire rope (10) is wound around the corresponding guide wheels (902) and the outer sides of the fixed pulleys (801).

7. A marine sediment stratified sampling device according to claim 6, characterized in that: A drill bit (201) is fixedly mounted on the bottom of the inner cylinder (2), through holes are provided on both sides of the inner cylinder (2), the sampling cylinder (3) passes through the corresponding through holes, and circular holes (101) are provided on both the front and rear sides of the outer cylinder (1); A second servo motor (203) and a protective cover (202) are fixedly mounted on the top of the outer cylinder (1); the protective cover (202) is arranged outside the second servo motor (203); and an output shaft of the second servo motor (203) is fixedly mounted on the top of the inner cylinder (2).

8. A marine sediment stratified sampling device according to claim 7, characterized in that: A controller (19) is fixedly mounted on the top of the door frame (8), and the controller (19) is signal-connected to the drive motor (405), the first servo motor (5), the second servo motor (203), the rotary motor (908), and the pressure sensor (18).

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