An underwater automated drilling system and drilling method

Abstract

An undersea automatic drilling system and drilling method, comprising a moving part, a drilling part, a drill head part, and a replacement part; stand the equipment upright, rotate the connecting rod to connect with connecting rod C, and power group C and power group B drive the drill bit to drill holes on the ground; put the support sleeve on the outside of connecting rod C; place connecting rod B into arc plate B, clamp it with the clamping block, move arc plate B, open support plate A, let connecting rod B fall, move arc plate B, and separate connecting rod B from arc plate B; under the action of gravity, connecting rod B connects with connecting rod C, rotate the connecting rod to connect with connecting rod B, and carry out drilling operations; rotate the drill bit inward, connecting rod C and the drill bit move upward, and the support sleeve remains in the hole; separate the two connecting rod Bs, arc plate B moves to the position of connecting rod B, separate connecting rod B, and move connecting rod B. Work sequentially, remove the installed connecting rod, and restore the equipment to its original state.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling equipment, and particularly relates to an underwater automatic drilling system and a drilling method. Background Art

[0002] Coral reefs are widely distributed in the South China Sea of China. The research on the South China Sea coral reefs mainly focuses on the fields of coral reef ecosystem, climate change, military oceanography, resources (such as fish, oil and gas, and hydrates), and island reef engineering, etc. From 2013 to 2017, the Institute of Rock and Soil Mechanics, Chinese Academy of Sciences and the South China Sea Institute of Oceanology, Chinese Academy of Sciences jointly carried out a coral reef scientific research project on the islands and reefs in the South China Sea. The 115th Geological Brigade of the Guizhou Bureau of Geology and Mineral Exploration and Development participated in the research process as the drilling construction unit and implemented hundreds of scientific research drillings of various types according to the research needs of the Chinese Academy of Sciences.

[0003] During the implementation of the project, coring in the Quaternary cover layer of coral reef islands is an important technical problem. The structure of the Quaternary cover layer of coral reef islands is a loose accumulation of coral sand and coral skeletons, without cementation, easily dispersed when encountering water, and extremely prone to collapse. There are mainly two difficulties in the drilling process: ① The core recovery rate is extremely low; ② It is difficult to form a well and it is difficult to drill normally. The traditional drilling method of "conventional small vertical shaft drill + mud retaining wall" is mainly adopted, and the specific situation is as follows: The equipment model is XY-180 drill; the drilling method is general drilling single-tube drilling; the mud is mainly prepared with clay powder, and the dosage is about 200 kg added to each cubic meter of water. This method is the most conventional technology for drilling the cover layer on land. The high-specific-gravity and high-viscosity mud has a good supporting effect on the loose wellbore wall. When there is no requirement for coring in the cover layer or the requirement for coring quality is extremely low, it is a good well-forming method and is widely used in various engineering investigations.

[0004] For example, the Chinese utility model patent with the publication number of CN217101126U discloses a drilling core sampling and storage device, which consists of: side box plates, front box plates, rear box plates and bottom plates. The bottom plates are vertically connected to the rear box plates and side box plates, the front box plates are connected to the two side box plates, a group of rectangular baffles are connected to the upper plate surface of the bottom plates, the group of baffles are arranged at equal distances, and the top ends of the baffles are on the same horizontal plane as the top ends of the side box plates; through holes are formed in the side box plates, threaded rods are inserted into the through holes, the end parts of the threaded rods penetrate out of the through holes, and the penetrated parts of the threaded rods are fixedly connected through toggle nuts; however, this device cannot realize the automatic picking, placing and replacement of the connecting rods and cannot prevent the collapse of the hole wall.

[0005] Based on this, the Chinese Academy of Sciences adopted this technology for island construction; however, during the construction process, serious drawbacks emerged, mainly including: (1) The loose coral reef covering layer was mixed with the mud, resulting in chaos and pollution, making it impossible to conduct research and use anymore; (2) The high-density and high-viscosity mud almost completely blocked the formation channels. During the pumping test, the formation could not permeate water into the well, and well flushing could not be carried out because the well wall would completely collapse after the mud cake was washed away. Eventually, the pumping result showed that the formation permeability was extremely poor, while in fact, this formation had excellent water permeability and was connected to the sea, which was verified after changing the drilling technology; (3) Sometimes the mud could not completely protect the well wall. Once a collapse occurred, no matter how the mud ratio was adjusted, it was impossible to effectively resume normal drilling. In this case, a casing had to be lowered, but the core of the XY-180 type mud was contaminated and mixed; the capabilities of the drilling rig limited the casing lowering process. First, the drilling rig had poor power and small torque, unable to meet the requirements of large-diameter casing rotary drilling. Second, the drilling rig had a short stroke and could not drill while following the pipe. When lifting the drill rod and reversing the rod, the wellbore collapsed due to suction, and the drill rod could not be lifted; this technology directly led to the inability to continue the scientific research project of the Chinese Academy of Sciences. Therefore, an automated drilling system and drilling method of the present invention are needed. Summary of the Invention

[0006] In view of the above technical problems, the present invention provides an undersea automated drilling system and drilling method to solve the technical problems of automatically picking up, placing, and replacing the connecting rod during the drilling process on a coral island and preventing the collapse of the hole wall.

[0007] The technical solution adopted by the present invention is: an undersea automated drilling system and drilling method, including a moving part, a drilling part, a drill head part, and a replacement part; characterized in that, the moving part drives the equipment to move on the ground and on the water surface; one end of the connecting rod A in the drilling part is rotatably installed in the groove of the front side baffle of the vehicle body in the moving part; there are multiple connecting rods B in the drill head part, and the multiple connecting rods B can be connected together. The rotating connecting rod in the drilling part can be connected to the connecting rod B to operate the rotation and descent of the connecting rod B; the fixing plate in the replacement part is fixedly installed between the two connecting rods A. The replacement part supplies the connecting rod B and the support sleeve to the equipment and can remove the connected connecting rods B.

[0008] Preferably, the moving part includes: crawlers, U-shaped plates, turbine groups, and power group A;

[0009] The connecting shafts of the two crawler wheels on both sides of the vehicle body are rotatably installed; the crawlers are in contact with the ground; a telescopic rod is installed at the lower end of the middle baffle of the U-shaped plate, and the lower end of the telescopic rod is fixedly installed on the inner side of the lower baffle of the vehicle body; there are two turbine groups, and the two turbine groups are connected by a chain group. The shafts of the turbine groups are rotatably installed in the grooves at the lower ends of the two side baffles of the U-shaped plate; the power group A includes: a motor and a gear group. The motor is fixedly installed on the lower baffle of the vehicle body, and the gear group is rotatably installed in the groove of the baffle installed on the lower baffle of the vehicle body.

[0010] Preferably, the drilling part includes: a connecting baffle, a support rod A, a U-shaped lower pressing plate, a power group B, a rotating connecting rod, a collar, a power group C, a connecting clamping block A, a rotating clamping block, and a control mechanism;

[0011] The lower end of the connecting rod A is rotatably installed in the groove of the front side baffle of the vehicle body. There are two connecting rods A, and the upper ends of the two connecting rods A are connected by a shaft. The connecting shaft of the two connecting rods A is rotatably installed in the groove at the rear side of the connecting rod A; the shafts at the upper parts of the two support rods A are respectively rotatably installed in the grooves on both sides of the connecting baffle; the side baffles of the U-shaped lower pressing plate are slidably installed in the grooves on both sides of the connecting baffle; the racks of the two power groups B are respectively fixedly installed in the grooves of the side baffles of the U-shaped lower pressing plate, and the motors of the power groups B are fixedly installed on the connecting baffle; the groove of the rotating connecting rod is slidably installed on the convex block inside the collar. A spring is installed outside the rotating connecting rod. The spring connects the baffle installed at the upper end of the rotating connecting rod and the connecting baffle; the collar is rotatably installed in the groove in the middle of the connecting baffle; one gear of the power group C is fixedly installed at the lower part of the collar, and the motor of the power group C is fixedly installed in the groove of the connecting baffle; a plurality of connecting clamping blocks A are respectively slidably installed in the grooves at the lower part of the rotating connecting rod. One end of the connecting clamping block A is installed with a spring, and the spring is connected to the rotating connecting rod; the hole of the rotating clamping block is rotatably installed on the shaft in the groove at the lower part of the rotating connecting rod. A torsion spring is installed inside the hole of the rotating clamping block, and the torsion spring is connected to the shaft in the groove at the lower part of the rotating connecting rod; the lower baffle of the control mechanism is fixedly installed in the groove at the lower end of the rotating connecting rod, and the upper baffle of the control mechanism is slidably installed in the groove at the lower end of the rotating connecting rod.

[0012] Preferably, the drill head part includes: a support sleeve, a connecting rod C, an airbag A, a drill bit, an airbag B, and an airbag connecting cylinder; there are multiple connecting rods B, and two connecting rods B can be connected; the support sleeve is sleeved outside the connecting rod B, and the support sleeve is provided with grooves to facilitate the seepage of water; the upper end of the connecting rod C is a groove and is connected to the connecting rod B through the plug plate at the lower end of the connecting rod B; the upper end of the airbag A is fixedly installed at the top of the outer groove at the lower end of the connecting rod C, and a baffle is installed at the lower end of the airbag A, and the baffle can push the drill bits together; the drill bit is rotatably installed on the shaft installed in the groove at the lower end of the connecting rod C; the upper end of the airbag B is fixedly installed at the top inside the lower end of the connecting rod C, and a baffle is installed at the lower end of the airbag B, and the baffle can push the drill bits open; the airbag connecting cylinder connects the airbag A and the airbag B.

[0013] Preferably, the replacement part includes: a power group D, a lead screw, an arc-shaped plate A, a separating block, an upper support plate, a lower support plate, an arc-shaped plate B, a clamping block, a rotating cylinder, a separating clamping block, a support plate A, a middle connecting plate, a support plate B, a separating cylinder, and a support plate C;

[0014] Both sides of the described fixed plate are fixedly installed on two connecting rods A. One side of the lead screw is rotatably installed in the groove on the fixed plate, and the other side is threadedly installed in the threaded holes on the baffle plates on both sides of the upper support plate. The two gears on both sides of the chain group of the power unit D are respectively fixedly installed on one side of the two lead screws, and the motor of the power unit D is fixedly installed on the baffle plate on the fixed plate. The upper end surface of the arc plate A is fixedly installed on the lower end surface of the connecting baffle plate, and the lower end of the arc plate A is fixedly installed on the lower support plate. There are two separating blocks, which are respectively fixedly installed on both sides inside the fixed plate. One side of the upper support plate is fixedly installed on the fixed plate. One side of the lower support plate is fixedly installed on the fixed plate. The arc plate B is slidably installed in the groove in the middle of the upper support plate and the lower support plate. The clamping block is rotatably installed on the shaft in the middle groove of the arc plate B. A coil spring is installed in the middle hole of the clamping block, and the coil spring is connected to the shaft in the middle groove of the arc plate B. The lower end of the rotary cylinder is installed with a convex block, and the convex block is slidably installed in the groove at the upper end of the clamping block. The upper end of the rotary cylinder is fixedly installed at the upper end of the middle groove of the arc plate B. The separating block is slidably installed in the grooves on both sides of the middle groove of the upper support plate. The two support plates A are respectively slidably installed in the grooves on both sides of the upper support plate. The support plate A is slidably installed in the middle groove of the middle connecting plate. A spring is installed on the side of the support plate A, and the end of the spring is installed on the baffle plate. The baffle plate is slidably installed in the groove on the side of the side groove of the upper support plate. The two middle connecting plates are respectively slidably installed in the grooves at the lower ends of both sides of the upper support plate. The support plate B is slidably installed in the grooves on both sides of the middle connecting plate. A spring is installed on one side of the support plate B, and the end of the spring is installed with a baffle plate. The baffle plate is slidably installed in the groove at the lower end of the upper support plate. One ends of the two separating cylinders are respectively fixedly installed on the sides of the two grooves in the middle of the upper support plate. The two support plates C are respectively slidably installed in the grooves on both sides of the lower support plate. A spring is installed on the side of the support plate C, and the end of the spring is installed with a baffle plate. The baffle plate is slidably installed in the groove of the lower support plate. The support plate C is fixedly installed with the arc plate B.

[0015] The present invention also provides a drilling method applicable to the above-mentioned undersea automatic drilling system, including the following steps:

[0016] S1. Equipment movement: Drive the equipment to move through the power unit A. When on the sea surface, the power unit A can drive the turbine group to make the equipment move, and stop at the position for preparation work.

[0017] S2. Prepare the working part: The connecting rod A and the support rod A support the working part to make the working part vertical for convenient operation.

[0018] S3. Drilling operation: Connect the rotating connecting rod with the connecting rod C. The rotating connecting rod drives the connecting rod C to rotate and move for drilling operation. When the connecting rod C descends to a certain position, the rotating connecting rod rises. During the rising process of the rotating connecting rod, the rotating connecting rod is separated from the connecting rod C, and the connecting rod C remains in the hole.

[0019] S4. Add support. Place the support sleeve on the arc-shaped plate B. The arc-shaped plate B transports the support sleeve to the position of the drilled hole, and then lowers it so that the support sleeve falls into the hole to support the hole wall and prevent collapse.

[0020] S5. Add a connecting rod. Place the connecting rod B on the arc-shaped plate B. The arc-shaped plate B transports the connecting rod B to the designated position. The connecting rod B is connected to the connecting rod C, and the rotating connecting rod is connected to the connecting rod B. Then, the rotating connecting rod drives the connecting rod B and the connecting rod C to rotate and move downward for drilling operations. Sequentially add the connecting rod B and the support sleeve to drill the hole to a certain depth.

[0021] S6. Remove the connecting rod B and the connecting rod C. The drill bit flips inward so that the drill bit wraps the soil in the connecting rod C. After the drill bit flips, the upper part of the drill bit no longer supports the connecting rod C. The rotating connecting rod is connected to the connecting rod B through the rotating block. Then, the rotating connecting rod drives the connecting rod B and the connecting rod C to rise. The soil is in the pipes of the connecting rod B and the connecting rod C and rises with them. After reaching a certain position, the replacement part removes the connecting rod B one by one.

[0022] The beneficial effects of the present invention compared with the prior art are as follows:

[0023] 1. The equipment can move on the ground and on the sea surface, facilitating transportation.

[0024] 2. Stand the equipment upright, connect the rotating connecting rod to the connecting rod C, and the power group C and the power group B drive the drill bit to rotate and move downward to drill holes on the ground, which can automatically connect the equipment and perform drilling operations.

[0025] 3. Move the rotating connecting rod to the upper position, put the support sleeve on the outside of the connecting rod C, and add support on the hole wall to prevent collapse.

[0026] 4. Place the connecting rod B in the arc-shaped plate B, clamp it with the clamping block, move the arc-shaped plate B, open the support plate A, and the connecting rod B drops. Move the arc-shaped plate B, and the separation block separates the connecting rod B from the arc-shaped plate B to automatically transport the connecting rod B.

[0027] 5. The support plate B detaches from the connecting rod B. Under the action of gravity, the connecting rod B is connected to the connecting rod C. The rotating connecting rod moves downward and is connected to the connecting rod B for drilling operations, automatically connecting the connecting rod B and starting drilling automatically after connection.

[0028] 6. Rotate the drill bit inward by a certain angle, connect the rotating connecting rod to the connecting rod B, the connecting rod C and the drill bit move upward, the support sleeve is left in the hole, remove the connecting rod for drilling, and leave the support sleeve on the hole wall.

[0029] 7. The two connecting rods B are separated. The arc-shaped plate B moves to the position of the connecting rod B. The support plate C separates the connecting rod B. The rotating connecting rod is disconnected from the connecting rod B. Driven by the arc-shaped plate B, the connecting rod B moves, automatically separating and removing the connecting rod.

[0030] 8. The rotating connecting rod is connected to the next connecting rod B. The rotating connecting rod drives the connecting rod B to rise and work in sequence to remove the installed connecting rod, restoring the device to its original state. The connecting rod can be automatically removed, and the device can be restored to its original state, facilitating the next use.

[0031] 9. In this way, drilling operations can be carried out on the coral island. When drilling, a support sleeve can be placed in the hole to support the hole wall, preventing the hole from collapsing and facilitating observation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figures 1-3 It is a schematic diagram of the overall structure of the present invention.

[0033] Figures 4-5 It is a schematic diagram of the structure of the moving part of the present invention.

[0034] Figures 6-8 It is a schematic diagram of the structure of the drilling part of the present invention.

[0035] Figures 9-11 It is a schematic diagram of the structure of the drill head part of the present invention.

[0036] Figures 12-18 It is a schematic diagram of the structure of the replacement part of the present invention.

[0037] REFERENCE NUMERALS IN THE DRAWINGS

[0038] 1 - Moving part; 2 - Drilling part; 3 - Drill head part; 4 - Replacement part; 101 - Vehicle body; 102 - Crawler; 103 - U-shaped plate; 104 - Turbine group; 105 - Power group A; 201 - Connecting rod A; 202 - Connecting baffle; 203 - Support rod A; 204 - U-shaped lower pressing plate; 205 - Power group B; 206 - Rotating connecting rod; 207 - Collar; 208 - Power group C; 209 - Connecting block A; 210 - Rotating block; 211 - Control mechanism; 301 - Connecting rod B; 302 - Support sleeve; 303 - Connecting rod C; 304 - Airbag A; 305 - Drill bit; 306 - Airbag B; 307 - Airbag connecting cylinder; 401 - Fixed plate; 402 - Power group D; 403 - Lead screw; 404 - Arc-shaped plate A; 405 - Separation block; 406 - Upper support plate; 407 - Lower support plate; 408 - Arc-shaped plate B; 409 - Clamping block; 410 - Rotary cylinder; 411 - Separation block; 412 - Support plate A; 413 - Middle connecting plate; 414 - Support plate B; 415 - Separation cylinder; 416 - Support plate C. DETAILED DESCRIPTION OF THE INVENTION

[0039] The technical solutions of the present invention will be further specifically described below through embodiments in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific implementations disclosed below.

[0040] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0041] Embodiment, as Figures 1-18 shown, a subsea automated drilling system and drilling method, comprising a moving part 1, a drilling part 2, a drill head part 3, and a replacement part 4; the moving part 1 drives the equipment to move on the ground and on the water surface; one end of a connecting rod A201 in the drilling part 2 is rotatably installed in a groove of a front side baffle of a vehicle body 101 in the moving part 1; there are multiple connecting rods B301 in the drill head part 3, and the multiple connecting rods B301 can be connected together. A rotating connecting rod 206 in the drilling part 2 can be connected to the connecting rod B301 to operate the rotation and descent of the connecting rod B301; a fixing plate 401 in the replacement part 4 is fixedly installed between the two connecting rods A201. The replacement part 4 supplies the connecting rod B301 and the support sleeve 302 to the equipment, and can disassemble the connected connecting rods B301.

[0042] In an alternative embodiment of the embodiment of the present invention, in addition to the parts identical to those in the previous embodiment, the moving part 1 includes: a crawler 102, a U-shaped plate 103, a turbine group 104, and a power group A105;

[0043] On both sides of the vehicle body 101, the connecting shafts of the wheels on both sides of the two crawlers 102 are rotatably installed; the crawlers 102 are in contact with the ground, and the wheels on both sides of the two crawlers 102 are connected by shafts. The rotation of the crawlers 102 drives the movement of the vehicle body 101; at the lower end of the middle baffle of the U-shaped plate 103, a telescopic rod is installed, and the lower end of the telescopic rod is fixedly installed on the inner side of the lower baffle of the vehicle body 101. The telescopic rod can drive the U-shaped plate 103 to rise and fall, and then drive the turbine group 104 to rise and fall. After the turbine group 104 descends, it can be immersed in the water, and then the equipment can be driven to move in the water; there are two turbine groups 104, and the two turbine groups 104 are connected by a chain group. The shafts of the turbine groups 104 are rotatably installed in the grooves at the lower ends of the two side baffles of the U-shaped plate 103; the power group A 105 includes: a motor and a gear group. The motor is fixedly installed on the lower baffle of the vehicle body 101, and the gear group is rotatably installed in the groove of the baffle installed on the lower baffle of the vehicle body 101. The motor drives the gear group to rotate, and then drives the gears on the connecting shafts of the wheels on both sides of the two crawlers 102 to rotate, thereby driving the rotation of the crawlers 102. After the turbine group 104 descends, the gears installed on the shafts of the turbine group 104 are engaged with the gears of the gear group of the power group A 105, and then the power group A 105 can drive the turbine group 104 to rotate; specifically, when drilling operations need to be carried out on a coral island, this equipment is used. First, if the equipment is placed on the sea, the telescopic rod installed on the U-shaped plate 103 retracts, driving the U-shaped plate 103 to move downward, and then driving the turbine group 104 to move downward to a specified position. The gears installed on the shafts of the turbine group 104 are engaged with the gears of the power group A 105. The motor of the power group A 105 drives the gears of the power group A 105 to rotate, and then drives the turbine group 104 to rotate, thereby driving the equipment to move on the sea surface. When the equipment moves to land, the crawlers 102 are in contact with the ground, and the telescopic rod installed on the U-shaped plate 103 is pushed out, driving the U-shaped plate 103 to rise, and then driving the turbine group 104 to rise to a specified position. The gears installed on the shafts of the turbine group 104 are disengaged from the gears of the power group A 105. The motor of the power group A 105 drives the gears of the power group A 105 to rotate, and then drives the crawlers 102 to rotate, thereby driving the equipment to move.

[0044] In an alternative embodiment of the present invention, in addition to the parts that are the same as those in the previous embodiment, the drilling part 2 includes: a connecting baffle 202, a support rod A 203, a U-shaped lower pressing plate 204, a power group B 205, a rotating connecting rod 206, a collar 207, a power group C 208, a connecting block A 209, a rotating block 210, and a control mechanism 211;

[0045] The lower end of the connecting rod A201 is rotatably installed in the groove of the front side baffle of the vehicle body 101. There are two connecting rods A201, and the upper ends of the two connecting rods A201 are connected by a shaft. The connecting shaft of the two connecting rods A201 is rotatably installed in the groove at the rear side of the connecting rod A201; the support rod A203 is divided into two parts, and the two parts are rotatably installed between them. The shafts at the upper parts of the two support rods A203 are respectively rotatably installed in the grooves on both sides of the connecting baffle 202; the two side baffles of the U-shaped lower pressing plate 204 are slidably installed in the grooves on both sides of the connecting baffle 202, and grooves are provided on both side baffles of the U-shaped lower pressing plate 204; the power group B205 includes: a motor, a gear and a rack. The gear meshes with the rack, the gear is fixedly installed on the shaft of the motor, and the racks of the two power groups B205 are respectively fixedly installed in the grooves on both side baffles of the U-shaped lower pressing plate 204. The motors of the power group B205 are fixedly installed on the connecting baffle 202; the rotating connecting rod 206 is provided with grooves around it, and the grooves of the rotating connecting rod 206 are slidably installed on the bumps on the inner side of the collar 207. A spring is installed on the outside of the rotating connecting rod 206, and the spring connects the baffle installed at the upper end of the rotating connecting rod 206 and the connecting baffle 202; the collar 207 is rotatably installed in the groove in the middle of the connecting baffle 202; the power group C208 includes: a motor and two gears, and the two gears mesh with each other. One gear of the power group C208 is fixedly installed at the lower part of the collar 207, and the motor of the power group C208 is fixedly installed in the groove of the connecting baffle 202; there are multiple connecting blocks A209, and the multiple connecting blocks A209 are respectively slidably installed in the grooves at the lower part of the rotating connecting rod 206. One end of the connecting block A209 is installed with a spring, and the spring is connected to the rotating connecting rod 206; the hole of the rotating block 210 is rotatably installed on the shaft in the groove at the lower part of the rotating connecting rod 206. A torsion spring is installed inside the hole of the rotating block 210, and the torsion spring is connected to the shaft in the groove at the lower part of the rotating connecting rod 206. The torsion spring makes the rotating block 210 retract into the groove at the lower part of the rotating connecting rod 206; the control mechanism 211 includes: an upper and a lower baffle and a telescopic rod. The two ends of the telescopic rod are respectively fixedly installed with the upper and lower baffles. The lower baffle of the control mechanism 211 is fixedly installed in the groove at the lower end of the rotating connecting rod 206, and the upper baffle of the control mechanism 211 is slidably installed in the groove at the lower end of the rotating connecting rod 206. The upper baffle controls the extension and retraction of the rotating block 210;Specifically, when the device moves to the designated position, rotate the connecting rod A201 to erect the drilling part 2 and the replacement part 4. After the drilling part 2 and the replacement part 4 are erected, move the position of the support rod A203 so that the bottom end of the support rod A203 is inserted into the ground, and then erect the device. Insert the lower end of the rotating connecting rod 206 into the upper end of the connecting rod C303, and the connecting block A209 installed at the lower end of the rotating connecting rod 206 is snapped into the groove inside the connecting rod C303 to connect the rotating connecting rod 206 and the connecting rod C303. The motor of the power unit C208 drives the gear of the power unit C208 to rotate, and then drives the collar 207 to rotate, thereby driving the rotating connecting rod 206 to rotate, then driving the connecting rod C303 to rotate, and then driving the drill bit 305 to rotate, and then making the drill bit 305 drill holes on the ground. The motor of the power unit B205 drives the gear of the power unit B205 to rotate, and then drives the rack of the power unit B205 to move, thereby driving the U-shaped lower pressing plate 204 to move, and then making the U-shaped lower pressing plate 204 lower the rotating connecting rod 206, so that the power unit B205 drills holes downward;

[0046] When the U-shaped lower pressing plate 204 drives the rotating connecting rod 206 to move to the designated position, the motor of the power unit B205 reverses, driving the U-shaped lower pressing plate 204 to move up to the designated position. The rotating connecting rod 206 moves up under the action of the spring, and the upper inclined surface of the connecting block A209 makes the connecting block A209 not catch the inner groove of the connecting rod C303, so that the rotating connecting rod 206 moves back to its original position. The support sleeve 302 is sleeved on the outside of the connecting rod C303, and the drill bit 305 catches the support sleeve 302 to make the support sleeve 302 not move down further.

[0047] In an optional embodiment of the embodiment of the present invention, in addition to the parts identical to those in the previous embodiment, the drill head 3 includes: a support sleeve 302, a connecting rod C303, an airbag A304, a drill bit 305, an airbag B306, and an airbag connecting cylinder 307;

[0048] There are multiple connecting rods B301. Two connecting rods B301 can be connected. The upper end of the connecting rod B301 is a groove, and grooves are provided on both sides of the upper part. The lower end is an insertion plate, and grooves are provided on both sides of the insertion plate. In the grooves, there are spring - equipped clamping blocks installed. The insertion plate is inserted into the upper - end groove, and the clamping blocks are clamped into the grooves on both sides of the upper end to connect the two connecting rods B301. The support sleeve 302 is sleeved outside the connecting rod B301, and grooves are provided on the support sleeve 302 to facilitate the seepage of water. The upper end of the connecting rod C303 is a groove and is connected to the connecting rod B301 through the insertion plate at the lower end of the connecting rod B301. The upper end of the airbag A304 is fixedly installed at the top of the groove on the outer side of the lower end of the connecting rod C303, and a baffle is installed at the lower end of the airbag A304, which can push the drill bit 305 to close. The drill bit 305 is rotatably installed on a shaft installed in the groove at the lower end of the connecting rod C303, and there are multiple drill bits 305. The upper end of the airbag B306 is fixedly installed at the top of the inner side of the lower end of the connecting rod C303, and a baffle is installed at the lower end of the airbag B306, which can push the drill bit 305 to open. There are two airbag connecting cylinders 307. The airbag connecting cylinders 307 connect the airbag A304 and the airbag B306. Inside the airbag connecting cylinders 307, there are installed a back - flow valve and an air - suction mechanism. One airbag connecting cylinder 307 transports gas from the airbag A304 to the airbag B306, and the other airbag connecting cylinder 307 transports gas from the airbag B306 to the airbag A304, thereby causing one of the airbag A304 and the airbag B306 to expand and the other to contract. Specifically, when the drilled hole reaches a certain depth, under the action of the back - flow valve and the air - suction mechanism inside the airbag connecting cylinder 307, the gas in the airbag B306 is transported to the airbag A304. Then, the baffle installed on the airbag B306 retracts, and the baffle installed on the airbag A304 extends, thus rotating the drill bit 305 inward by a certain angle. At this time, the upper end of the drill bit 305 no longer catches the support sleeve 302. The rotating connecting rod 206 is inserted into the connecting rod B301, the telescopic rod of the control mechanism 211 is pushed out, driving the upper baffle to move, and then flipping the rotating clamping block 210, so that the connecting rod A201 is clamped into the groove on the inner side of the connecting rod B301. The rotating connecting rod 206 moves upward, driving the connecting rod B301 to move upward, and then driving the connecting rod C303 and the drill bit 305 to move upward. The support sleeve 302 should not be caught by the drill bit 305 and is left in the hole.

[0049] In an alternative embodiment of the present invention, except for the parts identical to those in the previous embodiment, the replacement part 4 includes: power group D402, lead screw 403, arc plate A404, separation block 405, upper support plate 406, lower support plate 407, arc plate B408, clamping block 409, rotary cylinder 410, separation clamping block 411, support plate A412, middle connecting plate 413, support plate B414, separation cylinder 415, support plate C416;

[0050] Both sides of the fixed plate 401 are fixedly installed on two connecting rods A201. One side of the lead screw 403 is rotatably installed in the groove on the fixed plate 401, and the other side is threadedly installed in the threaded holes on the side baffles of the upper support plate 406. The power group D402 includes: a motor and a chain group. The middle gear of the chain group is fixedly installed on the shaft of the motor. The two side gears of the chain group of the power group D402 are respectively fixedly installed on one side of the two lead screws 403. The motor of the power group D402 is fixedly installed on the baffle on the fixed plate 401. The upper end surface of the arc plate A404 is fixedly installed on the lower end surface of the connecting baffle 202, and the lower end of the arc plate A404 is fixedly installed on the lower support plate 407. There are two separation blocks 405, which are respectively fixedly installed on both sides inside the fixed plate 401. One side of the upper support plate 406 is fixedly installed on the fixed plate 401. One side of the lower support plate 407 is fixedly installed on the fixed plate 401, and the lower support plate 407 is installed below the upper support plate 406. The arc plate B408 is slidably installed in the grooves in the middle of the upper support plate 406 and the lower support plate 407. The clamping block 409 is rotatably installed on the shaft in the middle groove of the arc plate B408. A coil spring is installed in the middle hole of the clamping block 409, and the coil spring is connected to the shaft in the middle groove of the arc plate B408. The lower end of the rotary cylinder 410 is installed with a convex block, and the convex block is slidably installed in the groove at the upper end of the clamping block 409. The upper end of the rotary cylinder 410 is fixedly installed at the upper end of the middle groove of the arc plate B408. The separation block 411 is slidably installed in the grooves on both sides of the middle groove of the upper support plate 406. One end of the separation block 411 is installed with a spring, and the spring is connected to the upper support plate 406. The two support plates A412 are respectively slidably installed in the grooves on both sides of the upper support plate 406. The support plate A412 is slidably installed in the middle groove of the middle connecting plate 413. A spring is installed on the side of the support plate A412, and the end of the spring is installed with a baffle, and the baffle is slidably installed in the groove on the side of the side groove of the upper support plate 406. The two middle connecting plates 413 are respectively slidably installed in the grooves at the lower ends of both sides of the upper support plate 406. The support plate B414 is slidably installed in the grooves on both sides of the middle connecting plate 413. A spring is installed on one side of the support plate B414, and the end of the spring is installed with a baffle, and the baffle is slidably installed in the groove at the lower end of the upper support plate 406. The support plate A412 and the support plate B414 are both slidably installed in the groove of the arc plate B408, and the arc plate B408 can drive the support plate A412 and the support plate B414 to move. One ends of the two separation cylinders 415 are respectively fixedly installed on the sides of the two grooves in the middle of the upper support plate 406. The two support plates C416 are respectively slidably installed in the grooves on both sides of the lower support plate 407. A spring is installed on the side of the support plate C416, and the end of the spring is installed with a baffle, and the baffle is slidably installed in the groove of the lower support plate 407. The support plate C416 is fixedly installed with the arc plate B408;Specifically, the rotary cylinder 410 drives the clamping block 409 to rotate, and then the clamping block 409 is opened. The connecting rod B301 is placed into the arc plate B408. The rotary cylinder 410 rotates back to its original position, and the clamping block 409 rebounds under the action of the coil spring, and then the clamping block 409 clamps the connecting rod B301. The lower end of the connecting rod B301 contacts the support plate A412, and the support plate A412 supports the connecting rod B301. The motor of the power unit D402 drives the chain set of the power unit D402 to rotate, and then drives the lead screw 403 to rotate, thereby driving the arc plate B408 to move in the middle groove of the upper support plate 406 and the lower support plate 407. When the arc plate B408 drives the connecting rod B301 to move to the specified position, the separating block 405 pushes the support plate A412 away under the action of the inclined plane. The support plate A412 no longer supports the connecting rod B301, and the connecting rod B301 falls onto the support plate B414. The support plate B414 supports the connecting rod B301. The motor of the power unit D402 reverses, driving the arc plate B408 to move in the reverse direction. The connecting rod B301 is caught by the separating latch 411. The clamping block 409 flips under the action of the rotary cylinder 410 to open the clamping block 409. Under the action of the separating latch 411, the connecting rod B301 is separated from the arc plate B408. The return movement of the arc plate B408 drives the support plate A412 and the support plate B414 to move back, and then the support plate B414 is separated from the connecting rod B301. The connecting rod B301 falls onto the upper end of the connecting rod C303 under the action of gravity. The insertion plate at the lower end of the connecting rod B301 is inserted into the groove at the upper end of the connecting rod C303 and is connected under the action of the latch. The power unit B205 drives the U-shaped lower pressing plate 204 to move downward, and then drives the rotating connecting rod 206 to move downward, so that the lower end of the rotating connecting rod 206 is inserted into the connecting rod B301. The connecting latch A209 pops out and is caught in the groove inside the connecting rod B301, connecting the connecting rod B301 and the rotating connecting rod 206. Then the rotating connecting rod 206 can drive the connecting rod B301 to rotate and move, so that the drill bit 305 works for drilling operations. When the rotating connecting rod 206 moves downward to the specified position, the rotating connecting rod 206 moves upward and separates from the connecting rod B301. A support sleeve 302 is sleeved outside the connecting rod B301, and the replacement part 4 then supplies the connecting rod B301 to enable the equipment to continue drilling.;

[0051] Working principle: When drilling operations need to be carried out on a coral island, this equipment is used. First, if the equipment is placed on the sea, the telescopic rod installed on the U-shaped plate 103 retracts, driving the U-shaped plate 103 to move downward, and then driving the turbine group 104 to move downward to a specified position. The gear installed on the shaft of the turbine group 104 meshes with the gear of the power group A105. The motor of the power group A105 drives the gear of the power group A105 to rotate, and then drives the turbine group 104 to rotate, thereby driving the equipment to move on the sea surface. When the equipment moves onto the land, the crawler 102 contacts the ground, and the telescopic rod installed on the U-shaped plate 103 extends, driving the U-shaped plate 103 to rise, and then driving the turbine group 104 to rise to a specified position. The gear on the shaft of the turbine group 104 disengages from the gear of the power group A105. The motor of the power group A105 drives the gear of the power group A105 to rotate, and then drives the crawler 102 to rotate, thereby driving the equipment to move;

[0052] When the equipment moves to the specified position, rotate the connecting rod A201 to make the drilling part 2 and the replacement part 4 stand up. After the drilling part 2 and the replacement part 4 stand up, move the position of the support rod A203 so that the bottom end of the support rod A203 is inserted into the ground, and then stand the equipment upright. Insert the lower end of the rotating connecting rod 206 into the upper end of the connecting rod C303. The connecting block A209 installed at the lower end of the rotating connecting rod 206 is snapped into the groove inside the connecting rod C303, connecting the rotating connecting rod 206 and the connecting rod C303. The motor of the power group C208 drives the gear of the power group C208 to rotate, and then drives the collar 207 to rotate, thereby driving the rotating connecting rod 206 to rotate, and then driving the connecting rod C303 to rotate, thereby driving the drill bit 305 to rotate, and then making the drill bit 305 drill holes in the ground. The motor of the power group B205 drives the gear of the power group B205 to rotate, and then drives the rack of the power group B205 to move, thereby driving the U-shaped lower pressing plate 204 to move, and then making the U-shaped lower pressing plate 204 move the rotating connecting rod 206 downward, so that the power group B205 drills downward;

[0053] When the U-shaped lower pressing plate 204 drives the rotating connecting rod 206 to move to the specified position, the motor of the power group B205 reverses, driving the U-shaped lower pressing plate 204 to move upward to the specified position. The rotating connecting rod 206 moves upward under the action of the spring. The upper inclined surface of the connecting block A209 causes the connecting block A209 not to catch the inner groove of the connecting rod C303, so that the rotating connecting rod 206 moves back to its original position. The support sleeve 302 is sleeved on the outside of the connecting rod C303, and the drill bit 305 catches the support sleeve 302, so that the support sleeve 302 does not move downward;

[0054] The rotary cylinder 410 drives the clamping block 409 to rotate, and then the clamping block 409 opens. The connecting rod B301 is placed into the arc-shaped plate B408. The rotary cylinder 410 rotates back to its original position. The clamping block 409 rebounds under the action of the coil spring, and then the clamping block 409 clamps the connecting rod B301. The lower end of the connecting rod B301 contacts the support plate A412, and the support plate A412 supports the connecting rod B301. The motor of the power unit D402 drives the chain set of the power unit D402 to rotate, and then drives the lead screw 403 to rotate, thereby driving the arc-shaped plate B408 to move in the middle groove of the upper support plate 406 and the lower support plate 407. When the arc-shaped plate B408 drives the connecting rod B301 to move to the specified position, the separating block 405 pushes the support plate A412 away under the action of the inclined plane. The support plate A412 no longer supports the connecting rod B301, and the connecting rod B301 drops onto the support plate B414. The support plate B414 supports the connecting rod B301. The motor of the power unit D402 reverses, driving the arc-shaped plate B408 to move in the reverse direction. The connecting rod B301 is caught by the separating and clamping block 411. The clamping block 409 flips under the action of the rotary cylinder 410 to open the clamping block 409. Under the action of the separating and clamping block 411, the connecting rod B301 is separated from the arc-shaped plate B408. The return movement of the arc-shaped plate B408 drives the support plate A412 and the support plate B414 to move back, and then the support plate B414 is separated from the connecting rod B301. The connecting rod B301 drops onto the upper end of the connecting rod C303 under the action of gravity. The insertion plate at the lower end of the connecting rod B301 is inserted into the groove at the upper end of the connecting rod C303 and is connected under the action of the clamping block. The power unit B205 drives the U-shaped lower pressing plate 204 to move downward, and then drives the rotating connecting rod 206 to move downward, so that the lower end of the rotating connecting rod 206 is inserted into the connecting rod B301. The connecting clamping block A209 pops out and is caught in the groove on the inner side of the connecting rod B301, connecting the connecting rod B301 and the rotating connecting rod 206. Then the rotating connecting rod 206 can drive the connecting rod B301 to rotate and move, so that the drill bit 305 works for drilling operations. When the rotating connecting rod 206 moves downward to the specified position, the rotating connecting rod 206 moves upward and separates from the connecting rod B301. A support sleeve 302 is sleeved outside the connecting rod B301, and the replacement part 4 then supplies the connecting rod B301 to enable the equipment to continue drilling;

[0055] When the drilled hole reaches a certain depth, under the action of the backflow valve inside the airbag connection cylinder 307 and the suction mechanism, the gas in the airbag B306 is transported to the airbag A304. Subsequently, the baffle installed on the airbag B306 retracts, and the baffle installed on the airbag A304 extends, thereby rotating the drill bit 305 inward by a certain angle. At this time, the upper end of the drill bit 305 no longer jams the support sleeve 302. The rotating connecting rod 206 is inserted into the connecting rod B301. The telescopic rod of the control mechanism 211 is pushed out, driving the upper baffle to move. Subsequently, the rotating block 210 is flipped, causing the connecting rod A201 to be stuck in the inner groove of the connecting rod B301. The rotating connecting rod 206 moves upward, driving the connecting rod B301 to move upward. Subsequently, the connecting rod C303 and the drill bit 305 are driven to move upward. Since the support sleeve 302 is not jammed by the drill bit 305, it is left in the hole;

[0056] When the connecting rod B301 moves to the designated position, the separation cylinder 415 extends and is inserted into the groove at the lower end of the connecting rod B301, pushing back the connection block of the connecting rod B301 to separate the two connecting rods B301. Under the action of the rotating connecting rod 206, the upper connecting rod B301 is moved upward by a certain distance. The clamping block 409 is opened under the action of the rotating cylinder 410, and the arc-shaped plate B408 moves to the designated position. The rotating cylinder 410 returns, and the clamping block 409 rebounds under the action of the coil spring to clamp the connecting rod B301. The support plate C416 follows the arc-shaped plate B408 to move to the designated position and is inserted into the middle position between the two connecting rods B301 to separate the two connecting rods B301. The telescopic rod of the control mechanism 211 retracts, driving the upper baffle of the control mechanism 211 to move back. Subsequently, the rotating block 210 retracts under the action of the coil spring, so that the rotating connecting rod 206 is disconnected from the connecting rod B301. The rotating connecting rod 206 rises and is disconnected from the connecting rod B301. The support plate A412 and the support plate B414 are translated by a certain distance under the action of the outer wall of the connecting rod B301. Driven by the arc-shaped plate B408, the connecting rod B301 is moved to the designated position, and the connecting rod B301 on the arc-shaped plate B408 is removed. The rotating connecting rod 206 moves downward and is inserted into the next connecting rod B301. The control mechanism 211 pushes open the rotating block 210, causing the rotating block 210 to be stuck in the inner groove of the connecting rod B301. The separation cylinder 415 retracts, so that the separation cylinder 415 no longer jams the upper groove of the connecting rod B301. At the same time, the rotating connecting rod 206 drives the connecting rod B301 to rise to the designated position and works in sequence to remove the installed connecting rod B301 and the connecting rod C303, and then turn the support rod A203 and the connecting rod A201 back to their original positions to restore the equipment to its original state;

[0057] In this way, drilling operations can be carried out on the coral island, and at the same time, when drilling, the support sleeve 302 can be placed in the hole to support the hole wall, making the hole not easy to collapse and facilitating observation.

[0058] The present invention also provides a drilling method applicable to the above-mentioned subsea automatic drilling system, comprising the following steps:

[0059] S1. Equipment movement: Drive the equipment to move through the power unit A105. When on the sea surface, the power unit A105 can drive the turbine group 104 to move the equipment, and stop at the position for preparatory work.

[0060] S2. Prepare the working part: Support the working part with the connecting rod A201 and the support rod A203 to make the working part vertical for convenient operation.

[0061] S3. Drilling operation: Connect the rotating connecting rod 206 with the connecting rod C303. The rotating connecting rod 206 drives the connecting rod C303 to rotate and move for drilling operation. When the connecting rod C303 descends to a certain position, the rotating connecting rod 206 rises. During the rising process of the rotating connecting rod 206, the rotating connecting rod 206 disengages from the connecting rod C303, and the connecting rod C303 remains in the hole.

[0062] S4. Add support: Place the support sleeve 302 on the arc plate B408. The arc plate B408 transports the support sleeve 302 to the position of the drilled hole and lowers it, so that the support sleeve 302 falls into the hole to support the hole wall and prevent collapse.

[0063] S5. Add connecting rods: Place the connecting rod B301 on the arc plate B408. The arc plate B408 transports the connecting rod B301 to the designated position. Connect the connecting rod B301 with the connecting rod C303, and connect the rotating connecting rod 206 with the connecting rod B301. Then, the rotating connecting rod 206 drives the connecting rod B301 and the connecting rod C303 to rotate and move downward for drilling operation. Sequentially add the connecting rod B301 and the support sleeve 302 to drill the hole to a certain depth.

[0064] S6. Remove the connecting rod B301 and the connecting rod C303: The drill bit 305 flips inward to wrap the soil in the connecting rod C303. After the drill bit 305 flips, the upper part of the drill bit 305 no longer supports the connecting rod C303. The rotating connecting rod 206 is connected with the connecting rod B301 through the rotating chuck 210. Then, the rotating connecting rod 206 drives the connecting rod B301 and the connecting rod C303 to rise. The soil is in the pipes of the connecting rod B301 and the connecting rod C303 and rises accordingly. After reaching a certain position, the replacement part 4 removes the connecting rod B301 one by one.

Claims

1. An undersea automatic drilling system, comprising a moving part (1), a drilling part (2), a drill head part (3), and a replacement part (4); characterized in that, The described moving part (1) drives the device to move on the ground and on the water surface; one end of the connecting rod A (201) in the drilling part (2) is rotatably installed in the groove of the front side baffle of the vehicle body (101) in the moving part (1); there are multiple connecting rods B (301) in the drill head part (3), and the multiple connecting rods B (301) can be connected. The rotating connecting rod (206) in the drilling part (2) can be connected to the connecting rod B (301) to operate the rotation and descent of the connecting rod B (301); the fixing plate (401) in the replacement part (4) is fixedly installed between the two connecting rods A (201). The replacement part (4) supplies the connecting rod B (301) and the support sleeve (302) to the device, and can remove the connected connecting rods B (301); the described moving part (1) includes: a crawler (102), a U-shaped plate (103), a turbine group (104), a power group A (105); the connecting shafts of the two sides of the crawler (102) are rotatably installed on both sides of the vehicle body (101); the crawler (102) is in contact with the ground; a telescopic rod is installed at the lower end of the middle baffle of the U-shaped plate (103), and the lower end of the telescopic rod is fixedly installed on the inner side of the lower baffle of the vehicle body (101); there are two turbine groups (104), and the two turbine groups (104) are connected by a chain group. The shafts of the turbine groups (104) are rotatably installed in the grooves at the lower ends of the two side baffles of the U-shaped plate (103); the power group A (105) includes: a motor and a gear group. The motor is fixedly installed on the lower baffle of the vehicle body (101), and the gear group is rotatably installed in the groove of the baffle installed on the lower baffle of the vehicle body (101). The described drilling part (2) includes: a connecting baffle (202), a support rod A (203), a U-shaped lower pressing plate (204), a power group B (205). The drilling part (2) further includes: a rotating connecting rod (206), a collar (207), a power group C (208), a connecting block A (209), a rotating block (210), a control mechanism (211). The lower end of the connecting rod A (201) is rotatably installed in the groove of the front side baffle of the vehicle body (101). There are two connecting rods A (201), and the upper ends of the two connecting rods A (201) are connected by a shaft. The connecting shaft of the two connecting rods A (201) is rotatably installed in the groove at the rear side of the connecting rod A (201); the shafts at the upper parts of the two support rods A (203) are respectively rotatably installed in the grooves on both sides of the connecting baffle (202); the two side baffles of the U-shaped lower pressing plate (204) are slidably installed in the grooves on both sides of the connecting baffle (202); the racks of the two power groups B (205) are respectively fixedly installed in the grooves of the two side baffles of the U-shaped lower pressing plate (204), and the motors of the power groups B (205) are fixedly installed on the connecting baffle (202).

2. The undersea automatic drilling system according to claim 1, characterized in that, The groove of the rotating connecting rod (206) is slidably mounted on the convex block inside the collar (207). A spring is mounted outside the rotating connecting rod (206), and the spring connects the baffle mounted at the upper end of the rotating connecting rod (206) and the connecting baffle (202); the collar (207) is rotatably mounted in the groove in the middle of the connecting baffle (202); a gear of the power group C (208) is fixedly mounted at the lower part of the collar (207), and the motor of the power group C (208) is fixedly mounted in the groove of the connecting baffle (202); a plurality of connecting blocks A (209) are respectively slidably mounted in the grooves at the lower part of the rotating connecting rod (206), and a spring is mounted at one end of the connecting block A (209), and the spring is connected to the rotating connecting rod (206); the hole of the rotating block (210) is rotatably mounted on the shaft in the groove at the lower part of the rotating connecting rod (206), a torsion spring is mounted inside the hole of the rotating block (210), and the torsion spring is connected to the shaft in the groove at the lower part of the rotating connecting rod (206); the lower baffle of the control mechanism (211) is fixedly mounted in the groove at the lower end of the rotating connecting rod (206), and the upper baffle of the control mechanism (211) is slidably mounted in the groove at the lower end of the rotating connecting rod (206).

3. The undersea automatic drilling system according to claim 1, characterized in that, The drill head (3) described above includes: a support sleeve (302), a connecting rod C (303), an airbag A (304), a drill bit (305), an airbag B (306), and an airbag connecting cylinder (307); there are a plurality of the connecting rods B (301), and two connecting rods B (301) can be connected; the support sleeve (302) is sleeved outside the connecting rod B (301), and the support sleeve (302) is provided with grooves to facilitate the seepage of water; the upper end of the connecting rod C (303) is a groove and is connected to the connecting rod B (301) through the plug at the lower end of the connecting rod B (301); the upper end of the airbag A (304) is fixedly mounted at the top of the groove on the outer side of the lower end of the connecting rod C (303), and a baffle is mounted at the lower end of the airbag A (304), and the baffle can push the drill bit (305) to close; the drill bit (305) is rotatably mounted on the shaft mounted in the groove at the lower end of the connecting rod C (303); the upper end of the airbag B (306) is fixedly mounted at the top of the inner side of the lower end of the connecting rod C (303), and a baffle is mounted at the lower end of the airbag B (306), and the baffle can push the drill bit (305) to open; the airbag connecting cylinder (307) connects the airbag A (304) and the airbag B (306).

4. The undersea automatic drilling system according to claim 1, characterized in that, The replacement part (4) includes: a power unit D (402), a lead screw (403), an arc-shaped plate A (404), a separation block (405), an upper support plate (406), a lower support plate (407), and an arc-shaped plate B (408); both sides of the fixed plate (401) are fixedly installed on two connecting rods A (201). One side of the lead screw (403) is rotatably installed in the groove of the fixed plate (401), and the other side is threadedly installed in the threaded holes on the baffle plates on both sides of the upper support plate (406); the two gears on both sides of the chain set of the power unit D (402) are respectively fixedly installed on one side of the two lead screws (403), and the motor of the power unit D (402) is fixedly installed on the baffle plate of the fixed plate (401); the upper end surface of the arc-shaped plate A (404) is fixedly installed on the lower end surface of the connecting baffle (202), and the lower end of the arc-shaped plate A (404) is fixedly installed on the lower support plate (407); there are two separation blocks (405), which are respectively fixedly installed on both sides inside the fixed plate (401); one side of the upper support plate (406) is fixedly installed on the fixed plate (401); one side of the lower support plate (407) is fixedly installed on the fixed plate (401); the arc-shaped plate B (408) is slidably installed in the groove in the middle of the upper support plate (406) and the lower support plate (407).

5. The undersea automatic drilling system according to claim 1, characterized in that, The replacement part (4) further includes: a clamping block (409), a rotary cylinder (410), a separating block (411), a support plate A (412), a middle connecting plate (413), a support plate B (414), a separating cylinder (415), and a support plate C (416); the clamping block (409) is rotatably installed on the shaft of the groove in the middle of the arc-shaped plate B (408), a coil spring is installed in the middle hole of the clamping block (409), and the coil spring is connected to the shaft of the groove in the middle of the arc-shaped plate B (408); a convex block is installed at the lower end of the rotary cylinder (410), the convex block is slidably installed in the groove at the upper end of the clamping block (409), and the upper end of the rotary cylinder (410) is fixedly installed at the upper end of the groove in the middle of the arc-shaped plate B (408); the separating block (411) is slidably installed in the grooves on both sides of the groove in the middle of the upper support plate (406); two support plates A (412) are respectively slidably installed in the grooves on both sides of the upper support plate (406), the support plate A (412) is slidably installed in the middle groove of the middle connecting plate (413), a spring is installed on the side surface of the support plate A (412), a baffle is installed at the end of the spring, and the baffle is slidably installed in the groove on the side surface of the groove on the side of the upper support plate (406); two middle connecting plates (413) are respectively slidably installed in the grooves at the lower ends on both sides of the upper support plate (406); the support plate B (414) is slidably installed in the grooves on both sides of the middle connecting plate (413), a spring is installed on one side of the support plate B (414), a baffle is installed at the end of the spring, and the baffle is slidably installed in the groove at the lower end of the upper support plate (406); one ends of two separating cylinders (415) are respectively fixedly installed on the side surfaces of the two grooves in the middle of the upper support plate (406); two support plates C (416) are respectively slidably installed in the grooves on both sides of the lower support plate (407), a spring is installed on the side surface of the support plate C (416), a baffle is installed at the end of the spring, and the baffle is slidably installed in the groove of the lower support plate (407), and the support plate C (416) is fixedly installed with the arc-shaped plate B (408).

6. The undersea automatic drilling system according to claim 1, characterized in that, A power system and a control system are installed inside the vehicle body (101) in the moving part (1), and the power system and the control system are wrapped by the vehicle body (101) to prevent the power system and the control system from being damaged.

7. The undersea automatic drilling system according to claim 1, characterized in that, The device is made of stainless steel material.

8. An undersea automatic drilling method applicable to any one of claims 1-7, comprising the following steps: S1. The device moves. The power group A (105) drives the device to move. When on the sea surface, the power group A (105) can drive the turbine group (104) to make the device move, and it stops moving to the preparation position. S2. Prepare the working part. The connecting rod A (201) and the support rod A (203) support the working part to make the working part stand upright for convenient operation. S3. Drilling operation: Connect the rotating connecting rod (206) to the connecting rod C (303). The rotating connecting rod (206) drives the connecting rod C (303) to rotate and move for drilling operation. When the connecting rod C (303) descends to a certain position, the rotating connecting rod (206) rises. During the rising process of the rotating connecting rod (206), the rotating connecting rod (206) disengages from the connecting rod C (303), and the connecting rod C (303) remains in the hole. S4. Adding support: Place the support sleeve (302) on the arc-shaped plate B (408). The arc-shaped plate B (408) transports the support sleeve (302) to the position of the drilled hole and lowers it, so that the support sleeve (302) falls into the hole to support the hole wall and prevent collapse. S5. Adding connecting rods: Place the connecting rod B (301) on the arc-shaped plate B (408). The arc-shaped plate B (408) transports the connecting rod B (301) to the designated position. Connect the connecting rod B (301) to the connecting rod C (303), and connect the rotating connecting rod (206) to the connecting rod B (301). Then, the rotating connecting rod (206) drives the connecting rod B (301) and the connecting rod C (303) to rotate and move downward for drilling operation. Sequentially add the connecting rod B (301) and the support sleeve (302) to drill the hole to a certain depth. S6. Removing the connecting rod B (301) and the connecting rod C (303): The drill bit (305) flips inward so that the drill bit (305) wraps the soil in the connecting rod C (303). After the drill bit (305) flips, the upper part of the drill bit (305) no longer supports the connecting rod C (303). The rotating connecting rod (206) is connected to the connecting rod B (301) through the rotating block (210). Then, the rotating connecting rod (206) drives the connecting rod B (301) and the connecting rod C (303) to rise. The soil is in the pipes of the connecting rod B (301) and the connecting rod C (303) and rises with them. After reaching a certain position, the replacement part 4 removes the connecting rod B (301) one by one.

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