A sticky gravel sampling structure for seabed rock layer survey

Abstract

The present invention discloses a sticky gravel sampling structure for seabed rock layer survey, comprising an equipment box, a first motor drive assembly slidingly provided inside the equipment box, a linear drive mechanism for driving the first motor drive assembly to slide vertically inside the equipment box provided on the upper inner portion of the equipment box, an annular mounting frame rotatably mounted on the outer side of the equipment box, a plurality of tubular sampling drill bits rotatably mounted on the annular mounting frame, the tubular sampling drill bits being fixedly engaged with the rotating shaft end of the first motor drive assembly via a connecting block fixedly mounted at the end; the output shaft of the second motor drive assembly being engaged with transmission teeth arranged on the side of the annular mounting frame via a gear. The sampler, through the rotation of the tubular sampling drill bit, enables the rock layer to be cut vertically into the tube, thereby collecting more complete rock layer information, and by providing multiple tubular sampling drill bits for switching use, it is possible to collect and classify rock layers at various locations.

Description

Technical Field

[0001] The invention belongs to the technical field of sampling equipment, and in particular relates to a sticky gravel sampling structure for seabed rock layer survey. Background Art

[0002] Approximately 70% of the Earth's surface is covered by blue ocean, rich in natural gas, oil, and other mineral resources. The development of seabed resources is gaining increasing attention, with increasing research on seabed mineral resources and a growing demand for seabed rock collection.

[0003] The collection of deep-sea rocks is mostly done by using television grabbers or underwater robots carried by submersibles. The samples obtained are used to study scientific issues such as marine geology and marine ecology, and to determine whether there are mineral resources on the seabed. However, this operation method is often time-consuming, labor-intensive, and costly.

[0004] Another type of sampling is done with a sampler. The sampler is suspended by a cable and then impacted to the seabed by gravity. A cylindrical sampler is inserted into the seabed, and the seabed sample is collected into the sampler. The sampler is then pulled up by the cable and recovered to the deck. However, this type of sampler has high requirements for volume and weight, and its applicability is relatively poor. In addition, traditional samplers lack a structure for multi-position sampling and collection. Each sample is lifted and hoisted, which is time-consuming and labor-intensive, increasing sampling costs. Therefore, an improved design is needed. Summary of the Invention

[0005] The purpose of the present invention is to provide a sticky gravel sampling structure for seabed rock layer surveying and put it into use to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a sticky gravel sampling structure for seabed rock layer exploration, comprising an equipment box, a first motor drive assembly being slidably disposed inside the equipment box, a linear drive mechanism for driving the first motor drive assembly to slide vertically within the equipment box being disposed on the upper portion of the inner side of the equipment box, an annular mounting frame being rotatably mounted on the outer side of the equipment box, a plurality of tubular sampling drill bits being rotatably mounted on the annular mounting frame, the tubular sampling drill bits being able to be clamped and fixed to the rotating shaft end of the first motor drive assembly via a connecting block fixedly mounted at the end thereof;

[0007] A second motor drive assembly is fixedly provided on the upper end of the equipment box, and an output shaft of the second motor drive assembly is gear-connected with a transmission tooth arranged on the side of the annular mounting frame through a gear.

[0008] Preferably, a plugging mechanism is fixedly installed above the equipment box through a bracket, and the plugging mechanism is composed of a third motor drive assembly fixedly installed above the equipment box, a screw rod fixedly installed on the output shaft of the third motor drive assembly, and a plurality of plug bodies sleeved on the screw rod and threadedly connected to the screw rod. When the annular mounting bracket drives the tubular sampling drill bit to rotate to the highest point, the plug body is located directly above the port of the tubular sampling drill bit.

[0009] Preferably, the plug body is composed of a truncated cone-shaped wooden block with a threaded sleeve fixedly provided in the middle, and pressure plates are welded to both ends of the threaded sleeve. The two pressure plates are respectively pressed on the upper and lower end surfaces of the wooden block.

[0010] Preferably, the linear drive mechanism is composed of a limit ring fixedly arranged on the inner wall of the equipment box, a solenoid valve and a water pump arranged on the side wall of the cavity above the limit ring, and a one-way valve is provided at the output end of the water pump.

[0011] Preferably, a sealing piston sleeve is sleeved on the outer side of the first motor drive assembly.

[0012] Preferably, a limiting rod is vertically fixedly provided on the lower side of the limiting ring, and a shaft sleeve is fixedly provided on the side of the first drive motor. The shaft sleeve is sleeved on the limiting rod and slides along the limiting rod.

[0013] Preferably, brackets are fixedly installed on the upper and lower ends of the equipment box, the annular mounting frame is rotatably arranged on the inner side of the bracket, and an annular groove is opened on the side of the annular mounting frame, and an arc block is fixedly arranged on the side of the bracket, and the arc block is inserted into the annular groove.

[0014] Preferably, a clamping boss is fixedly mounted on the end of the output shaft of the first motor drive assembly, and a groove corresponding to the clamping boss is formed on the connecting block fixedly mounted on one end of the tubular sampling drill bit.

[0015] Preferably, the first motor drive assembly, the second motor drive assembly and the third motor drive assembly are all composed of a sealed box and a drive motor arranged in the sealed box, the output shaft of the drive motor extends into the sealed box, and a mechanical sealing structure is provided between the output shaft of the drive motor and the sealed box.

[0016] Also disclosed is a method of using the sticky gravel sampling structure for seabed rock layer surveying according to any one of claims 1 to 9, comprising the following steps:

[0017] S1. Connect cables via the connecting ears on the outer wall of the third motor drive assembly, hoist the entire device, and adjust the annular mounting frame so that one of the tubular sampling drill bits is dropped vertically downward into the sea;

[0018] S2. After the sampler is placed on the seabed by hoisting, the linear drive mechanism drives the second motor drive assembly to move and engage and fix the end of the tubular sampling drill bit on the annular bracket;

[0019] S3, starting the first motor drive assembly to drive the tubular sampling drill bit to rotate, so that the tubular sampling drill bit moves into the rock formation, and the rock formation is collected into the interior of the tubular sampling drill bit;

[0020] S4, starting the second motor drive assembly to drive the annular mounting frame to rotate, adjusting each tubular sampling drill bit to a working position directly below the first motor drive assembly, and collecting rock layers at different positions;

[0021] S5. After the annular mounting frame drives the tubular sampling drill bit to rotate to the highest point, the plug-pushing mechanism is activated, and the third motor drives the assembly to rotate, causing the plug to move along the screw rod and engage the end of the tubular sampling drill bit;

[0022] S6. Lift the sampler as a whole through cables to complete the sampling work.

[0023] The technical effects and advantages of the present invention are as follows: the sticky gravel sampling structure for seabed rock layer surveying is

[0024] 1. Through the tubular sampling drill bit, the rock layer depth level is collected into the tube, which is convenient for research and detection. In addition, by setting up an annular mounting frame, the tubular sampling drill bit can be switched to the working position multiple times, and the movement of the first motor drive component can be coordinated to realize sampling and collection at various positions. It is more practical, does not require multiple lifting, and saves sampling costs.

[0025] 2. A plugging mechanism is provided to press the plug into the port of the tubular sampling drill bit below, thereby sealing the port of the tubular sampling drill bit and ensuring that the collected material inside will not fall out during the sampler recovery process, thereby ensuring its integrity and making it more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of the connection of the tubular sampling drill bit on the annular mounting frame;

[0028] Figure 3 It is a schematic diagram of the connection block and the clamping boss;

[0029] Figure 4 is a cross-sectional view of the plug body;

[0030] Figure 5 Schematic diagram of the structure of the plug-top mechanism;

[0031] Figure 6Schematic diagram of the internal structure of the equipment box.

[0032] In the figure: 1, equipment housing; 2, first motor drive assembly; 3, linear drive mechanism; 32, solenoid valve; 33, water pump; 4, plug mechanism; 41, third motor drive assembly; 42, screw rod; 43, plug body; 431, wooden block; 432, threaded sleeve;

[0033] 5. Annular mounting frame; 6. Tubular sampling drill bit; 7. Connecting block; 8. Second motor drive assembly; 9. Bracket; 10. Pressing plate; 11. One-way valve; 12. Sealing piston sleeve; 13. Limiting rod; 14. Annular groove; 15. Arc block; 16. Clamping boss; 17. Groove; 18. Bushing; 19. Gear; 20. Transmission gear. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] The present invention provides Figure 1-6 The structure shown is a sticky gravel sampling structure for seabed rock layer exploration, comprising an equipment housing 1, a first motor drive assembly 2 being slidably disposed within the equipment housing 1, a linear drive mechanism 3 being disposed on the upper portion of the inner side of the equipment housing 1 for driving the first motor drive assembly 2 to slide vertically within the equipment housing, an annular mounting frame 5 being rotatably mounted on the outer side of the equipment housing 1, a plurality of tubular sampling drill bits 6 being rotatably mounted on the annular mounting frame 5, the tubular sampling drill bits 6 being securely engaged with the rotating shaft end of the first motor drive assembly 2 via a connecting block 7 fixedly mounted at the end thereof;

[0036] A second motor drive assembly 8 is fixedly provided on the upper end of the equipment box 1 , and an output shaft of the second motor drive assembly 8 is gear-engaged with a transmission tooth 20 arranged on the side of the annular mounting frame 5 through a gear 19 .

[0037] After the sampler is placed on the seabed via a cable, the linear drive mechanism 3 drives the first motor drive assembly 2 to slide in the equipment box 1. When the output shaft of the first motor drive assembly 2 is docked with the end of the tubular sampling drill bit 6 and then locked, the output shaft of the first motor drive assembly 2 and the tubular sampling drill bit 6 are relatively fixed. The first motor drive assembly 2 drives the tubular sampling drill bit 6 to rotate, thereby drilling the rock formation, and the rock formation penetrates deep into the tubular sampling drill bit 6 to achieve collection;

[0038] After completing the collection at one position, the linear drive mechanism 3 drives the first motor drive assembly 2 to move upward, thereby separating from the tubular sampling drill bit 6, and pulling the sampler to the next working position through the cable. The annular mounting frame 5 is driven to rotate by the second motor drive assembly 8, so that the next one drives the tubular sampling drill bit 6 to rotate to the bottom of the output shaft of the first motor drive assembly 2. The linear drive mechanism 3 drives the first motor drive assembly 2 downward again, engages with the end of the tubular sampling drill bit 6, and continues to collect samples. This is repeated to achieve sampling operations at multiple positions. The sampler, through the tubular sampling drill bit 6, can collect the depth of the rock formation into the tube, which is convenient for research and detection. In addition, by setting the annular mounting frame 5, the tubular sampling drill bit 6 is switched to the working position multiple times, and the movement of the first motor drive assembly 2 is coordinated to achieve sampling and collection at each position. It is more practical, does not require multiple lifting, and saves sampling costs.

[0039] A plugging mechanism 4 is fixedly installed above the equipment box 1 through a bracket 9. The plugging mechanism 4 is composed of a third motor drive component 41 fixedly installed above the equipment box 1, a screw rod 42 fixedly installed on the output shaft of the third motor drive component 41, and a plurality of plugs 43 sleeved on the screw rod 42 and threadedly connected to the screw rod 42. When the annular mounting frame 5 drives the tubular sampling drill bit 6 to rotate to the highest point, the plug 43 is located directly above the port of the tubular sampling drill bit 6. At this time, the screw rod 42 is driven to rotate by the third motor drive component 41, and the plug 43 threadedly connected to the screw rod 42 slides off the screw rod 42 and presses into the port of the tubular sampling drill bit 6 below, closing the port of the tubular sampling drill bit 6, ensuring that the collected material inside will not fall out during the recovery process of the sampler, thereby ensuring its integrity and greater practicality.

[0040] The plug body 43 is composed of a truncated cone-shaped wooden block 431 with a threaded sleeve 432 fixed in the middle. A pressure plate 10 is welded to each end of the threaded sleeve 432. The two pressure plates 10 are respectively pressed against the upper and lower end surfaces of the wooden block 431. The pressure plates 10 press the upper and lower end surfaces of the wooden block 431 to ensure its overall strength.

[0041] The linear drive mechanism 3 is composed of a retaining ring 31 fixed to the inner wall of the device housing 1, a solenoid valve 32 located on the side wall of the cavity above the retaining ring 31, and a water pump 33. The output end of the water pump 33 is provided with a one-way valve 11. When the solenoid valve 32 is opened, seawater pressure from the outer wall enters the device housing 1, driving the first motor drive assembly 2 from top to bottom. When retraction is required, the water in the device housing 1 is pumped out by the water pump 33, causing the first motor drive assembly 2 to move from bottom to top.

[0042] The linear drive mechanism 3 can also be an electric telescopic rod, but compared with the electric telescopic rod, the linear drive mechanism 3 uses the principle of water pressure through the solenoid valve 32 and the water pump 33 to achieve a stronger driving force for the movement of the first motor drive component 2, thereby ensuring that the first motor drive component 2 moves faster and more stably, and the failure rate is also lower.

[0043] The outer side of the first motor drive assembly 2 is sleeved with a sealing piston sleeve 12 to enhance the sealing performance of the upper cavity of the first motor drive assembly 2.

[0044] A limit rod 13 is vertically fixed to the lower side of the limit ring 31, and a shaft sleeve 18 is fixed to the side of the first drive motor 22. The shaft sleeve 18 is sleeved on the limit rod 13 and slides along the limit rod 13. During the movement of the first motor drive assembly 2, the shaft sleeve 18 slides along the limit rod 13, ensuring that the first motor drive assembly 2 maintains linear motion and has greater stability.

[0045] Brackets 9 are fixedly mounted on the upper and lower ends of the device housing 1. The annular mounting frame 5 is rotatably mounted inside the brackets 9. An annular groove 14 is formed on the side of the annular mounting frame 5. An arc block 15 is fixedly mounted on the side of the bracket 9 and inserted into the annular groove 14. During the movement of the annular mounting frame 5, the arc block 15 moves along the annular groove 14, ensuring the stability of the rotation of the annular mounting frame 5.

[0046] A latching boss 16 is fixedly mounted on the end of the output shaft of the first motor drive assembly 2. A groove 17 corresponding to the latching boss 16 is formed on the connecting block 7, to which one end of the tubular sampling drill bit 6 is fixedly mounted. After the first motor drive assembly 2 is in motion, the output shaft drives the latching boss 16 to quickly insert into the groove 17 on the connecting block 7. Since the latching boss 16 is small at the front and large at the rear, it is easy to insert into the groove 17 and complete the latching, ensuring the accuracy of the latching connection.

[0047] The first motor drive assembly 2, the second motor drive assembly 8, and the third motor drive assembly 41 are each composed of a sealed housing and a drive motor disposed within the sealed housing. The output shaft of the drive motor extends into the sealed housing 21, and a mechanical seal is provided between the output shaft of the drive motor and the sealed housing. The dynamic ring, static ring, and sealing ring of the mechanical seal ensure a tight seal between the drive motor and the sealed housing, preventing leakage and ensuring stable operation of the drive motor.

[0048] Also disclosed is a method of using the sticky gravel sampling structure for seabed rock layer surveying according to any one of claims 1 to 9, comprising the following steps:

[0049] S1. Connect the cables via the connecting ears on the outer wall of the third motor drive assembly 41 to lift the entire device, and adjust the annular mounting frame 5 so that one of the tubular sampling drill bits 6 is dropped vertically downward into the sea;

[0050] S2. After the sampler is placed on the seabed by hoisting, the linear drive mechanism 3 is driven to drive the second motor drive assembly 8 to move and engage and fix the end of the tubular sampling drill bit 6 on the annular bracket 9;

[0051] S3, starting the first motor drive assembly 2 to drive the tubular sampling drill bit 6 to rotate, so that the tubular sampling drill bit 6 moves into the rock formation, and the rock formation is collected into the interior of the tubular sampling drill bit 6;

[0052] S4, start the second motor drive assembly 8 to drive the annular mounting frame 5 to rotate, adjust each tubular sampling drill bit 6 to a working position directly below the first motor drive assembly 2, and collect rock layers at different positions;

[0053] S5. After the annular mounting frame 5 drives the tubular sampling drill bit 6 to rotate to the highest point, the plug-pushing mechanism 4 is started, and the third motor driving assembly 41 rotates, causing the plug body 43 to move along the screw rod 42 and engage the end of the tubular sampling drill bit 6.

[0054] S6. Lift the sampler as a whole through cables to complete the sampling work.

[0055] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sticky gravel sampling structure for seabed rock layer survey, comprising an equipment box (1), characterized in that: A first motor drive assembly (2) is slidably provided inside the device box (1), a linear drive mechanism (3) for driving the first motor drive assembly (2) to slide vertically inside the device box is provided on the upper portion of the inner side of the device box (1), an annular mounting frame (5) is rotatably installed on the outer side of the device box (1), a plurality of tubular sampling drill bits (6) are rotatably installed on the annular mounting frame (5), and the tubular sampling drill bits (6) can be fixedly connected to the rotating shaft end of the first motor drive assembly (2) through a connecting block (7) fixedly installed at the end; A second drive motor assembly (8) is fixedly provided at the upper end of the equipment box (1), and an output shaft of the second drive motor assembly (8) is gear-connected with a transmission tooth arranged on the side of the annular mounting frame (5) through a gear.

2. The sticky gravel sampling structure for seabed rock layer survey according to claim 1, characterized in that: A plugging mechanism (4) is fixedly mounted above the device housing (1) via a bracket (9). The plugging mechanism (4) is composed of a third drive motor assembly (41) fixedly mounted above the device housing (1), a screw rod (42) fixedly mounted on the output shaft of the third drive motor assembly (41), and a plurality of plug bodies (43) sleeved on the screw rod (42) and threadedly connected to the screw rod (42). When the annular mounting frame (5) drives the tubular sampling drill bit (6) to rotate to the highest point, the plug bodies (43) are located directly above the port of the tubular sampling drill bit (6).

3. The sticky gravel sampling structure for seabed rock layer survey according to claim 2, characterized in that: The plug body (43) is composed of a truncated cone-shaped wooden block (431) with a threaded sleeve (432) fixedly arranged in the middle. Both ends of the threaded sleeve (432) are welded with pressure plates (10), and the two pressure plates (10) are respectively pressed on the upper and lower end surfaces of the wooden block (431).

4. The sticky gravel sampling structure for seabed rock layer survey according to claim 3, characterized in that: The linear drive mechanism (3) is composed of a limit ring (31) fixedly arranged on the inner wall of the equipment box (1), a solenoid valve (32) arranged on the side wall of the cavity above the limit ring (31), and a water pump (33), and a one-way valve (11) is provided at the output end of the water pump (33).

5. The sticky gravel sampling structure for seabed rock layer survey according to claim 4, characterized in that: A sealing piston sleeve (12) is sleeved on the outer side of the first motor drive assembly (2).

6. The sticky gravel sampling structure for seabed rock layer survey according to claim 4, characterized in that: A limiting rod (13) is vertically fixedly provided on the lower side of the limiting ring (31), and a shaft sleeve (18) is fixedly provided on the side of the first motor drive assembly (2). The shaft sleeve (18) is sleeved on the limiting rod (13) and slides along the limiting rod (13).

7. The sticky gravel sampling structure for seabed rock layer survey according to claim 1, characterized in that: The upper and lower ends of the equipment box (1) are fixedly mounted with brackets (9), the annular mounting frame (5) is rotatably arranged inside the bracket (9), and a circular groove (14) is provided on the side of the annular mounting frame (5), and an arc block (15) is fixedly arranged on the side of the bracket (9), and the arc block (15) is inserted into the annular groove (14).

8. The sticky gravel sampling structure for seabed rock layer survey according to claim 1, characterized in that: A clamping boss (16) is fixedly mounted on the output shaft end of the first motor drive assembly (2), and a groove (17) corresponding to the clamping boss (16) is formed on a connecting block (7) fixedly mounted on one end of the tubular sampling drill bit (6).

9. The sticky gravel sampling structure for seabed rock layer survey according to claim 4, characterized in that: The first motor drive assembly (2), the second motor drive assembly (8) and the third motor drive assembly (41) are all composed of a sealed box and a drive motor arranged in the sealed box, the output shaft of the drive motor extends into the sealed box, and a mechanical sealing structure is provided between the output shaft of the drive motor and the sealed box.

10. A method for using the sticky gravel sampling structure for seabed rock layer survey according to any one of claims 1 to 9, characterized in that: The method includes the following steps: S1. Connect the cables via the connecting ears on the outer wall of the third motor drive assembly (41), lift the entire device, and adjust the annular mounting frame (5) so that one of the tubular sampling drill bits (6) is vertically lowered into the sea; S2. After the sampler is placed on the seabed by hoisting, the linear drive mechanism (3) is driven to push the second motor drive assembly (8) to move and engage and fix the end of the tubular sampling drill bit (6) on the annular bracket (9); S3, starting the first motor drive assembly (2) to drive the tubular sampling drill bit (6) to rotate, so that the tubular sampling drill bit (6) moves into the rock formation, and at the same time, the rock formation is collected into the interior of the tubular sampling drill bit (6); S4, starting the second motor drive assembly (8) to drive the annular mounting frame (5) to rotate, adjusting each tubular sampling drill bit (6) to deflect to a working position directly below the first motor drive assembly (2), and collecting rock layers at different positions; S5. After the annular mounting frame (5) drives the tubular sampling drill bit (6) to rotate to the highest point, the plug-pushing mechanism (4) is started and rotated by the third motor drive assembly (41), so that the plug body (43) moves along the screw rod (42) and is locked into the end of the tubular sampling drill bit (6); S6. Lift the sampler as a whole through cables to complete the sampling work.

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