Marine geological engineering surveying and mapping equipment

Abstract

The invention discloses marine geological engineering surveying and mapping equipment, and belongs to the technical field of marine geological surveying. A marine geological engineering surveying and mapping device comprises a first balancing weight and further comprises a first stand column with a limiting block arranged at the top and fixedly connected to the upper end of the first balancing weight, a device plate is longitudinally and slidably connected to the outer wall of the first stand column, a sampling pipe is rotatably connected to the device plate, and a second stand column is fixedly connected to the upper end of the first balancing weight. An insertion hole matched with the sampling pipe is formed in the first balancing weight; a driving part for driving the sampling pipe to rotate is arranged on the device plate; the rotating pipe is rotationally connected to the lower end of the first balancing weight, an annular tool bit is fixedly installed at the lower end of the rotating pipe, and a rotating part for driving the rotating pipe to rotate is arranged on the first balancing weight; according to the device, the subsequent punching process can be more stable, and the subsequent punching sampling efficiency is indirectly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of marine geological survey, and in particular to a marine geological engineering survey and mapping device. Background Art

[0002] Marine geological engineering survey refers to geological survey work carried out in the marine environment, the purpose of which is to understand the seabed topography, geological structure, sediment properties and distribution, etc. This type of survey is crucial for seabed resource development, seabed engineering design and construction, and marine environmental protection.

[0003] During the marine geological engineering survey, it is necessary to complete soil sampling on the seabed in order to analyze and understand the marine geology. During the soil sampling process, due to the buoyancy of water and the frequent generation of undercurrents, it will be difficult for the sampling equipment located on the bottom of the water to exert force and drill holes efficiently, making it difficult to efficiently complete the soil sampling work. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that it is difficult to efficiently complete the seabed soil layer sampling work, and to propose a marine geological engineering survey and mapping equipment.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A marine geological engineering survey and mapping equipment includes a first counterweight block, and also includes: a first column with a limit block on the top, fixedly connected to the upper end of the first counterweight block, wherein the outer wall of the first column is longitudinally slidably connected to a device plate, a sampling tube is rotatably connected to the device plate, the first counterweight block is provided with a socket that cooperates with the sampling tube, and the device plate is provided with a driving part that drives the sampling tube to rotate; a rotating tube rotatably connected to the lower end of the first counterweight block, wherein an annular cutter head is fixedly installed at the lower end of the rotating tube, and the first counterweight block is provided with a rotating part that drives the rotating tube to rotate.

[0007] In order to facilitate the continuous rotation of the rotating tube, preferably, the driving part includes a first motor fixedly mounted on the device plate, and a first gear is fixedly mounted on the output shaft of the first motor and the outer wall of the sampling tube, and the two first gears are meshed and connected with each other, and the upper end of the device plate is provided with a knocking part for indirectly pressing downward.

[0008] In order to make the rotating tube more efficient in sampling, the knocking part further includes a second column fixedly connected to the upper end of the device plate, and the outer wall of the second column is slidably connected to a second counterweight block, wherein the outer wall of the second column is fixedly connected to a fixed block located at the lower end of the second counterweight block, and the outer wall of the sampling tube is provided with a lifting part for indirectly pressing the bottom of the second counterweight block.

[0009] In order to indirectly impact the device plate, the lifting part further includes a trapezoidal block fixedly connected to the lower end of the second counterweight block, and a roller is installed on the outer wall of the sampling tube through a rotating rod. When the sampling tube continues to rotate, the roller will indirectly slide over the surface of the trapezoidal block.

[0010] In order to enable the rotating tube to rotate continuously, preferably, the rotating part includes a second motor fixedly mounted on the first counterweight block, the output shaft of the second motor is fixedly connected to the vertical shaft, the output end of the vertical shaft is fixedly mounted with a second gear, and the outer wall of the rotating tube is fixedly mounted with a ring gear meshing with the second gear.

[0011] In order to improve the stability of the rotating tube, preferably, the upper outer wall of the rotating tube is fixedly connected with an annular plate, the outer wall of the annular plate is provided with a drainage hole extending into the rotating tube, a one-way valve is fixedly installed in the drainage hole, and a negative pressure component is provided in the rotating tube.

[0012] In order to discharge the seawater in the rotating tube, the negative pressure component further includes a piston plate sleeved in the rotating tube, the first counterweight block is provided with a lifting part for driving the piston plate to move up and down, the upper end of the piston plate is provided with a circular hole aligned with the socket, the lower end of the circular hole is rotatably mounted with an end cover through a rotating seat, and a torsion spring is installed between the rotating seat and the end cover.

[0013] In order to enable the piston plate to move reciprocatingly up and down, the lifting part further includes a device cavity arranged in the first counterweight block, and a reciprocating screw is rotatably connected in the device cavity, wherein the outer wall of the reciprocating screw is threadedly connected to a lifting block, a sleeve is fixedly connected to the lifting block, the piston plate is fixedly connected to the sleeve, and the reciprocating screw is connected to the vertical axis through a chain drive.

[0014] In order to facilitate the use of the entire device, preferably, a piston block is sleeved on the inner bottom of the sampling tube, the upper end of the piston block is rotatably connected to a connecting rope, the top of the connecting rope is fixedly connected to the upper end of the sampling tube, and the top of the sampling tube is fixedly connected to a hollow rope connected thereto.

[0015] In order to ensure the use effect of the end cover, further, a clamp-type check valve is installed in the circular hole, and a sealing ring matching the circular hole is provided on the end cover.

[0016] Compared with the prior art, the present invention provides a marine geological engineering survey and mapping equipment, which has the following beneficial effects:

[0017] 1. The marine geological engineering survey and mapping equipment drives the rotating tube to rotate through the second motor. The rotating tube will be inserted into the annular groove as the annular cutter head cuts. The entire device can be fixed to the soil layer on the seabed through the rotating tube, thereby making the subsequent drilling process more stable and indirectly improving the subsequent drilling sampling efficiency.

[0018] 2. The marine geological engineering survey and mapping equipment drives the roller to revolve around it through the sampling tube. The second counterweight block will fall downward under the action of gravity and hit the fixed block. Therefore, when the sampling tube rotates, it will also impact the top pressure downward, thereby significantly improving the efficiency of inserting the sampling tube into the soil layer, thereby improving the efficiency of soil sampling.

[0019] 3. The marine geological engineering survey and mapping equipment will press the end cover downward through the downward moving sampling tube until the end cover opens the circular hole. When the sampling tube moves upward and resets, the torsion spring will drive the end cover to reset. Therefore, seawater will not enter the bottom of the sampling tube from the circular hole and the plug hole, preventing the bottom soil sample at the bottom of the sampling tube from being contaminated by seawater, thus ensuring the representativeness of the soil sample.

[0020] 4. This marine geological engineering survey and mapping equipment drives the lifting block to move up and down through the vertical axis and reciprocating screw. The reciprocating piston plate will basically empty the seawater in the rotating tube, and negative pressure will be generated at the inner bottom of the rotating tube and the sampling tube. The rotating tube will be pressed into the seabed under the action of the pressure difference, which significantly improves the stability of the sampling process and indirectly improves the sampling efficiency.

[0021] 5. This marine geological engineering survey and mapping equipment, after the sampling tube is inserted into the soil layer, a small amount of seawater in the rotating tube will flow into the upper part of the borehole, while the bottom of the borehole basically will not seep into seawater. Therefore, the bottom soil sample taken by the sampling tube is not easily wetted by seawater and affects the soil sample structure, which improves the accuracy of subsequent soil sample detection. Moreover, since the inner bottom of the sampling tube is in a negative pressure state, when the sampling tube is inserted into the soil layer, the soil sample will also be sucked into the sampling tube under the action of negative pressure, thereby improving the sampling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the axonometric structure from a first perspective of a marine geological engineering survey and mapping device proposed by the present invention;

[0023] Figure 2 A schematic diagram of the axonometric structure from a second viewing angle of a marine geological engineering survey and mapping device proposed by the present invention;

[0024] Figure 3 This is a schematic diagram of the partial axonometric structure of a marine geological engineering survey and mapping equipment proposed by the present invention;

[0025] Figure 4A partial cross-sectional structural schematic diagram of a marine geological engineering survey and mapping device proposed by the present invention;

[0026] Figure 5 A marine geological engineering survey and mapping equipment proposed by the present invention Figure 4 Schematic diagram of the structure of part A;

[0027] Figure 6 This is a schematic diagram of the axonometric structure of a piston plate of a marine geological engineering survey and mapping equipment proposed by the present invention;

[0028] Figure 7 This is a schematic diagram of the rotating tube axonometric structure of a marine geological engineering survey and mapping equipment proposed by the present invention;

[0029] Figure 8 This is a schematic diagram of the axonometric structure of a piston block of a marine geological engineering survey and mapping equipment proposed by the present invention.

[0030] In the figure: 1. first counterweight; 2. first column; 3. installation plate; 4. sampling tube; 5. first motor; 6. first gear; 7. second column; 8. second counterweight; 9. fixed block; 10. rotating rod; 11. roller; 12. trapezoidal block; 13. hollow rope; 14. rotating tube; 15. annular cutter head; 16. annular plate; 17. second motor; 18. vertical axis; 19. second gear; 20. annular gear; 21. drainage hole; 22. piston plate; 23. rotating seat; 24. end cover; 25. round hole; 26. jack; 27. installation chamber; 28. reciprocating screw; 29. ​​lifting block; 30. sleeve; 31. chain drive; 32. piston block; 33. connecting rope. DETAILED DESCRIPTION

[0031] 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.

[0032] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] Embodiment 1:

[0034] Reference Figure 1-Figure 8, a marine geological engineering survey and mapping equipment, including a first counterweight block 1 for lifting weight, and also including: a first column 2 with a limit block on the top, fixedly connected to the upper end of the first counterweight block 1, wherein the outer wall of the first column 2 is longitudinally slidably connected with a device plate 3, and a sampling tube 4 for taking soil samples is rotatably connected to the device plate 3, and a socket 26 cooperating with the sampling tube 4 is provided on the first counterweight block 1, and a sealing ring is installed on the inner wall of the socket 26, and a driving part for driving the sampling tube 4 to rotate is provided on the device plate 3, and the driving part includes a first motor 5 fixedly installed on the device plate 3, and the output shaft of the first motor 5 and the outer wall of the sampling tube 4 are fixedly installed with a first gear 6, and the two first gears 6 are meshed and connected with each other, and the upper end of the device plate 3 is provided with a knocking part for indirectly pressing downward; a rotating tube 14 rotatably connected to the lower end of the first counterweight block 1, wherein a ring cutter head 15 is fixedly installed on the lower end of the rotating tube 14, and a rotating part for driving the rotating tube 14 to rotate is provided on the first counterweight block 1.

[0035] Specifically, when in use, the entire device is thrown into the water until the rotating tube 14 contacts the seabed. At this time, the rotating tube 14 is driven to rotate by the rotating part, and the rotating tube 14 can drive the annular cutter head 15 at the bottom to rotate. The annular cutter head 15 will cut the seabed soil layer, so that the seabed soil layer forms an annular groove, and the rotating tube 14 will be inserted into the annular groove as the annular cutter head 15 cuts, and the entire device can be fixed to the seabed soil layer through the rotating tube 14, so that the subsequent drilling process is more stable, and the subsequent drilling sampling efficiency is indirectly improved. Then the first motor 5 is started, and the first motor 5 drives the sampling tube 4 to rotate through two mutually meshing first gears 6. At this time, the sampling tube 4 is continued to be released downward, so that the sampling tube 4 moves along the outer wall of the first column 2 to When the sampling tube 4 is pulled upward, the sampling tube 4 will first be pulled out from the seabed soil layer, and then its end will be retracted into the insertion hole 26, and then the rotating tube 14 will be pulled out from the annular groove, so that the sampling work of the soil layer can be quickly completed. When the whole device is placed in the sea area, a suspension rope can be connected to the top of the sampling tube 4. During the rotation of the sampling tube 4, the knocking part will cause the device plate 3 to be subjected to a downward impact force, and the device plate 3 will transmit the impact force to the sampling tube 4. Therefore, when the sampling tube 4 rotates, it will also impact the top pressure downward, thereby significantly improving the efficiency of the sampling tube 4 inserted into the soil layer, thereby improving the soil layer sampling efficiency.

[0036] The inner bottom of the sampling tube 4 is sleeved with a piston block 32, the outer wall of the piston block 32 is installed with a sealing ring, the upper end of the piston block 32 is rotatably connected with a connecting rope 33, the top of the connecting rope 33 is fixedly connected to the upper end of the sampling tube 4, the top of the sampling tube 4 is fixedly connected with a hollow rope 13 connected thereto, the hollow rope 13 is made of a flexible and soft material, such as a thin tube of rubber material, and the hollow rope 13 is connected to the top of the sampling tube 4.

[0037] Specifically, after the sampling tube 4 is inserted into the soil layer, the soil layer will push the piston block 32 upward, and the entire device can be conveniently placed into the sea area or taken out of the sea area through the hollow rope 13.

[0038] Embodiment 2:

[0039] Reference Figure 1-Figure 3 , which is basically the same as the first embodiment, and further discloses a specific implementation scheme of the striking part.

[0040] The above-mentioned knocking part includes a second column 7 fixedly connected to the upper end of the device plate 3, and the outer wall of the second column 7 is slidably connected to the second counterweight block 8, and the second counterweight block 8 is used to lift the dead weight of the sampling tube 4, wherein the outer wall of the second column 7 is fixedly connected to the fixed block 9 located at the lower end of the second counterweight block 8, and the outer wall of the sampling tube 4 is provided with a lifting part for indirectly pressing the bottom of the second counterweight block 8, and the lifting part includes a trapezoidal block 12 fixedly connected to the lower end of the second counterweight block 8, and the trapezoidal block 12 has a trapezoidal shape. The outer wall of the sampling tube 4 is rotatably installed with a roller 11 through a rotating rod 10. When the sampling tube 4 continues to rotate, the roller 11 will indirectly slide over the surface of the trapezoidal block 12.

[0041] Specifically, when the sampling tube 4 rotates, the sampling tube 4 will drive the roller 11 to revolve around it through the rotating rod 10, and the roller 11 will indirectly lift the trapezoidal block 12. When the trapezoidal block 12 is lifted up, it will drive the second counterweight block 8 to lift upward, and the second counterweight block 8 will slide upward along the surface of the second column 7. When the roller 11 passes over the trapezoidal block 12, the second counterweight block 8 will fall downward under the action of gravity and hit the fixed block 9. The fixed block 9 will transfer the impact force received to the device plate 3 through the second column 7, and the device plate 3 will transfer the impact force to the sampling tube 4. Therefore, when the sampling tube 4 rotates, it will also impact and press downward, thereby significantly improving the efficiency of inserting the sampling tube 4 into the soil layer, thereby improving the soil layer sampling efficiency.

[0042] Embodiment three:

[0043] Reference Figure 4-Figure 7 , which is basically the same as the second embodiment, and further discloses a specific implementation scheme of the rotating part.

[0044] The above-mentioned rotating part includes a second motor 17 fixedly mounted on the first counterweight block 1, the output shaft of the second motor 17 is fixedly connected to the vertical shaft 18, the output end of the vertical shaft 18 is fixedly mounted with a second gear 19, and the outer wall of the rotating tube 14 is fixedly mounted with a ring gear 20 meshing with the second gear 19.

[0045] Specifically, when in use, start the second motor 17, the second motor 17 can drive the second gear 19 to rotate through the vertical shaft 18, the second gear 19 will drive the rotating tube 14 to rotate through the annular gear 20, the rotating tube 14 can drive the annular cutter head 15 at the bottom to rotate, the annular cutter head 15 will cut the seabed soil layer to form an annular groove, and the rotating tube 14 will be inserted into the annular groove as the annular cutter head 15 cuts, and then turn off the second motor 17, and the entire device can be fixed to the soil layer on the seabed through the rotating tube 14.

[0046] Embodiment 4:

[0047] Reference Figure 1-Figure 2 as well as Figure 4-Figure 7 , which is basically the same as the third embodiment, and further, a specific implementation scheme for improving the stability of the rotating tube 14 is specifically added.

[0048] The outer wall of the upper end of the rotating tube 14 is fixedly connected with an annular plate 16, and the outer wall of the annular plate 16 is provided with a drainage hole 21 extending into the rotating tube 14, and the drainage hole 21 will penetrate the annular plate 16, and a one-way valve is fixedly installed in the drainage hole 21. A negative pressure component is provided in the rotating tube 14, and the negative pressure component includes a piston plate 22 sleeved in the rotating tube 14. A sealing ring is installed on the outer wall of the piston plate 22. A lifting part for driving the piston plate 22 to move up and down is provided in the first counterweight block 1, and the upper end of the piston plate 22 is provided with a valve that is aligned with the jack 26. The circular hole 25 is aligned with each other, and the lower end of the circular hole 25 is rotatably installed with an end cover 24 through a rotating seat 23, and a torsion spring is installed between the rotating seat 23 and the end cover 24. The lifting part includes a device cavity 27 arranged in the first counterweight block 1, and a reciprocating screw 28 is rotatably connected in the device cavity 27, wherein the outer wall of the reciprocating screw 28 is threadedly connected with a lifting block 29, and a sleeve 30 is fixedly connected to the lifting block 29, the piston plate 22 is fixedly connected to the sleeve 30, and the reciprocating screw 28 is connected to the vertical shaft 18 through a chain drive 31.

[0049] Specifically, when the rotating tube 14 is inserted into the soil layer on the seabed, the annular plate 16 can limit the insertion depth of the rotating tube 14, so that a gap is retained between the first counterweight block 1 and the seabed, and some seawater will remain at the bottom of the rotating tube 14, while other excess seawater will be discharged from the rotating tube 14 from the drainage hole 21. When the sampling tube 4 is inserted into the rotating tube 14, the lower end of the sampling tube 4 will first press the end cover 24 downward until the end cover 24 opens the circular hole 25. When the sampling tube 4 moves upward and resets, the torsion spring will drive the end cover 24 to reset and block the circular hole 25. Therefore, seawater will not enter the bottom of the sampling tube 4 from the circular hole 25 and the insertion hole 26, thereby preventing the bottom soil sample at the bottom of the sampling tube 4 from being contaminated by seawater, thereby ensuring the representativeness of the soil sample.

[0050] When the vertical shaft 18 rotates, the vertical shaft 18 will drive the reciprocating screw 28 to rotate through the chain drive 31, and the reciprocating screw 28 will drive the lifting block 29 to lift up and down, and the lifting block 29 will drive the piston plate 22 to move up and down in the rotating tube 14 through the sleeve 30. When the piston plate 22 moves downward, the end cover 24 is closed, and the seawater in the rotating tube 14 will be discharged through the drainage hole 21. When the piston plate 22 moves upward, negative pressure will be generated in the rotating tube 14. However, since a one-way valve is installed in the drainage hole 21 and a piston block 32 is provided in the sampling tube 4, the rotating tube 14 will not absorb seawater through the drainage hole 21. Therefore, the piston plate 22 that reciprocates up and down will basically drain the seawater in the rotating tube 14, and the rotating tube 14 and the inner part of the sampling tube 4 are connected. Negative pressure will be generated at the bottom, and the pressure of the rotating tube 14 will be greater than the internal pressure, so the rotating tube 14 will be pressed into the seabed under the action of the pressure difference, which significantly improves the stability during the sampling process and indirectly improves the sampling efficiency. Moreover, since there is basically no seawater in the rotating tube 14, after the sampling tube 4 is inserted into the soil layer, a small amount of seawater in the rotating tube 14 will flow into the upper half of the borehole, and the bottom of the borehole will basically not penetrate into the seawater. Therefore, the bottom soil sample taken by the sampling tube 4 is not easily wetted by seawater and affects the soil sample structure, which improves the accuracy of subsequent soil sample detection. Moreover, since the inner bottom of the sampling tube 4 is in a negative pressure state, when the sampling tube 4 is inserted into the soil layer, the soil sample will also be sucked into the sampling tube 4 under the action of negative pressure, thereby improving the sampling efficiency.

[0051] A clamp-type check valve is installed in the circular hole 25, and a sealing ring matching the circular hole 25 is provided on the end cover 24. The clamp-type check valve allows seawater to enter the circular hole 25, and the sealing ring can improve the sealing performance of the end cover 24. The principle of the end cover 24 is similar to that of the clamp-type check valve.

[0052] When the marine geological engineering survey and mapping equipment is in use, the entire device is thrown into the water area through the hollow rope 13 until the rotating tube 14 touches the seabed. At this time, the second motor 17 is started, and the second motor 17 can drive the second gear 19 to rotate through the vertical shaft 18. The second gear 19 will drive the rotating tube 14 to rotate through the annular gear 20. The rotating tube 14 can drive the annular cutter head 15 at the bottom to rotate, and the annular cutter head 15 will cut the seabed soil layer to form an annular groove in the seabed soil layer, and the rotating tube 14 will be inserted into the annular groove as the annular cutter head 15 cuts, and then the second motor 17 is turned off, and the entire device can be fixed to the soil layer on the seabed through the rotating tube 14, so that the subsequent drilling process is more stable, thereby indirectly improving the subsequent drilling and sampling efficiency.

[0053] After the fixation is completed, the first motor 5 is started. The first motor 5 will drive the sampling tube 4 to rotate through the two mutually meshing first gears 6. At this time, the hollow rope 13 continues to be released downward. The second counterweight block 8 will drive the sampling tube 4 to slide downward under the action of gravity. It will first extend into the rotating tube 14, and then insert into the seabed soil layer from the rotating tube 14. When the second counterweight block 8 moves to fit on the first counterweight block 1, the sampling tube 4 can complete the drilling sampling work, and then pull the sampling tube 4 through the hollow rope 13. First, the sampling tube 4 will be pulled out from the seabed soil layer, and then its end will retract into the socket 26, and then the rotating tube 14 will be pulled out from the annular groove, and the sampling work of the soil layer can be quickly completed.

[0054] When the sampling tube 4 rotates, the sampling tube 4 will drive the roller 11 to revolve around it through the rotating rod 10, and the roller 11 will indirectly lift the trapezoidal block 12. When the trapezoidal block 12 is lifted up, it will drive the second counterweight block 8 to lift upward. When the roller 11 passes over the trapezoidal block 12, the second counterweight block 8 will fall downward under the action of gravity and hit the fixed block 9. The fixed block 9 will transfer the impact force received to the device plate 3 through the second column 7, and the device plate 3 will transfer the impact force to the sampling tube 4. Therefore, when the sampling tube 4 rotates, it will also impact and press downward, thereby significantly improving the efficiency of the sampling tube 4 inserted into the soil layer, thereby improving the soil layer sampling efficiency.

[0055] When the rotating tube 14 is inserted into the soil layer of the seabed, the annular plate 16 can limit the insertion depth of the rotating tube 14, so that a gap is retained between the first counterweight block 1 and the seabed, and some seawater will remain at the bottom of the rotating tube 14, while other excess seawater will be discharged from the rotating tube 14 through the drainage hole 21. When the sampling tube 4 is inserted into the rotating tube 14, the lower end of the sampling tube 4 will first press the end cover 24 downward until the end cover 24 opens the circular hole 25. When the sampling tube 4 moves upward and resets, the torsion spring will drive the end cover 24 to reset and block the circular hole 25. Therefore, seawater will not enter the bottom of the sampling tube 4 from the circular hole 25 and the insertion hole 26, preventing the bottom soil sample at the bottom of the sampling tube 4 from being contaminated by seawater, thereby ensuring the representativeness of the soil sample.

[0056] When the vertical shaft 18 rotates, the vertical shaft 18 will drive the reciprocating screw 28 to rotate through the chain drive 31, and the reciprocating screw 28 will drive the lifting block 29 to lift up and down, and the lifting block 29 will drive the piston plate 22 to move up and down in the rotating tube 14 through the sleeve 30. When the piston plate 22 moves downward, the end cover 24 is closed, and the seawater in the rotating tube 14 will be discharged through the drainage hole 21. When the piston plate 22 moves upward, negative pressure will be generated in the rotating tube 14. However, since a one-way valve is installed in the drainage hole 21 and a piston block 32 is provided in the sampling tube 4, the rotating tube 14 will not absorb seawater through the drainage hole 21. Therefore, the piston plate 22 that reciprocates up and down will basically drain the seawater in the rotating tube 14, and the rotating tube 14 and the inner part of the sampling tube 4 are connected. Negative pressure will be generated at the bottom, and the pressure of the rotating tube 14 will be greater than the internal pressure, so the rotating tube 14 will be pressed into the seabed under the action of the pressure difference, which significantly improves the stability during the sampling process and indirectly improves the sampling efficiency. Moreover, since there is basically no seawater in the rotating tube 14, after the sampling tube 4 is inserted into the soil layer, a small amount of seawater in the rotating tube 14 will flow into the upper half of the borehole, and the bottom of the borehole will basically not penetrate into the seawater. Therefore, the bottom soil sample taken by the sampling tube 4 is not easily wetted by seawater and affects the soil sample structure, which improves the accuracy of subsequent soil sample detection. Moreover, since the inner bottom of the sampling tube 4 is in a negative pressure state, when the sampling tube 4 is inserted into the soil layer, the soil sample will also be sucked into the sampling tube 4 under the action of negative pressure, thereby improving the sampling efficiency.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A marine geological engineering survey and mapping device, comprising a first counterweight block (1), It is characterized in that Also includes: A first column (2) with a limit block on the top is fixedly connected to the upper end of the first counterweight block (1). The outer wall of the first column (2) is longitudinally slidably connected to a device plate (3), the device plate (3) is rotatably connected to a sampling tube (4), the first counterweight (1) is provided with a socket (26) matched with the sampling tube (4), and the device plate (3) is provided with a driving part for driving the sampling tube (4) to rotate; Rotating a rotating tube (14) connected to the lower end of the first counterweight (1), Wherein, an annular cutter head (15) is fixedly mounted on the lower end of the rotating tube (14), and a rotating part for driving the rotating tube (14) to rotate is provided on the first counterweight block (1).

2. A marine geological engineering survey and mapping equipment according to claim 1, It is characterized in that The driving part comprises a first motor (5) fixedly mounted on a device plate (3); a first gear (6) is fixedly mounted on an output shaft of the first motor (5) and an outer wall of the sampling tube (4); the two first gears (6) are meshedly connected with each other; and a knocking part for indirectly pressing downward is provided at the upper end of the device plate (3).

3. A marine geological engineering survey and mapping equipment according to claim 2, It is characterized in that The striking part comprises a second column (7) fixedly connected to the upper end of the device plate (3), and a second counterweight (8) is slidably connected to the outer wall of the second column (7). The outer wall of the second column (7) is fixedly connected to a fixed block (9) located at the lower end of the second counterweight block (8), and the outer wall of the sampling tube (4) is provided with a lifting portion for indirectly pressing the bottom of the second counterweight block (8).

4. A marine geological engineering survey and mapping equipment according to claim 3, It is characterized in that The lifting part comprises a trapezoidal block (12) fixedly connected to the lower end of the second counterweight block (8); a roller (11) is rotatably mounted on the outer wall of the sampling tube (4) via a rotating rod (10); when the sampling tube (4) continues to rotate, the roller (11) will indirectly slide over the surface of the trapezoidal block (12).

5. The marine geological engineering survey and mapping equipment according to claim 1, It is characterized in that The rotating part comprises a second motor (17) fixedly mounted on the first counterweight (1); the output shaft of the second motor (17) is fixedly connected to a vertical shaft (18); a second gear (19) is fixedly mounted on the output end of the vertical shaft (18); and a ring gear (20) meshingly connected to the second gear (19) is fixedly mounted on the outer wall of the rotating tube (14).

6. The marine geological engineering survey and mapping equipment according to claim 1, It is characterized in that The outer wall of the upper end of the rotating tube (14) is fixedly connected to an annular plate (16), the outer wall of the annular plate (16) is provided with a drainage hole (21) extending into the rotating tube (14), a one-way valve is fixedly installed in the drainage hole (21), and a negative pressure component is provided in the rotating tube (14).

7. A marine geological engineering survey and mapping equipment according to claim 6, It is characterized in that The negative pressure component comprises a piston plate (22) sleeved in a rotating tube (14); a lifting part for driving the piston plate (22) to move up and down is provided in the first counterweight block (1); a circular hole (25) aligned with the insertion hole (26) is provided at the upper end of the piston plate (22); an end cover (24) is rotatably mounted on the lower end of the circular hole (25) through a rotating seat (23); and a torsion spring is installed between the rotating seat (23) and the end cover (24).

8. The marine geological engineering survey and mapping equipment according to claim 7, It is characterized in that The lifting part comprises a device cavity (27) arranged in the first counterweight block (1), and a reciprocating screw (28) is rotatably connected in the device cavity (27). The outer wall of the reciprocating screw (28) is threadedly connected to a lifting block (29), a sleeve (30) is fixedly connected to the lifting block (29), the piston plate (22) is fixedly connected to the sleeve (30), and the reciprocating screw (28) is connected to the vertical shaft (18) via a chain drive (31).

9. The marine geological engineering survey and mapping equipment according to claim 1, It is characterized in that The inner bottom of the sampling tube (4) is sleeved with a piston block (32), the upper end of the piston block (32) is rotatably connected to a connecting rope (33), the top of the connecting rope (33) is fixedly connected to the upper end of the sampling tube (4), and the top of the sampling tube (4) is fixedly connected to a hollow rope (13) communicating therewith.

10. The marine geological engineering survey and mapping equipment according to claim 7, It is characterized in that A clamp-type check valve is installed in the circular hole (25), and a sealing ring matching the circular hole (25) is provided on the end cover (24).

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