Novel drilling equipment for underwater geology

Abstract

The utility model discloses novel drilling equipment for underwater geology. The novel drilling equipment comprises a sleeve, a drill rod and a drill bit assembly. An opening is formed in the lower end of the sleeve and is communicated with the accommodating space; the drill rod is arranged in the containing space, the drill bit assembly comprises a drill bit body, at least two movable parts and reset parts arranged corresponding to the movable parts, the drill bit body is connected to the lower end of the drill rod and extends to the lower end of the sleeve through the opening, and the movable parts have a drilling state and a recycling state; the upper end of the abutting face is located in the axial extending space position of the containing space, the lower end of the abutting face is located outside the axial extending space position of the containing space, and in the recovery state, the upper end and the lower end of the abutting face are both located in the axial extending space position of the containing space. According to the technical scheme, the drill bit can be conveniently taken out of the drill hole.

Description

Technical Field

[0001] This utility model relates to the field of underwater geological drilling technology, and in particular to a novel drilling device for underwater geology. Background Technology

[0002] Underwater geological conditions are difficult to fully and accurately grasp, and various unstable geological structures may exist, such as faults, fracture zones, and karst caves.

[0003] When drilling through these areas, borehole collapse is likely to occur, causing the drill bit to get stuck. Even when drilling inside casing, the geological conditions around the casing may vary. Locally weak strata or areas with developed fractures may collapse during drilling, burying or jamming the drill bit with the collapsed soil and rocks. This significantly reduces the effective drilling and drainage time, especially during underwater blasting, which severely impacts drilling and drainage efficiency.

[0004] To remove a stuck drill bit, it is often necessary to apply significant pulling or twisting forces to the drill pipe. This can cause excessive stress on the drill pipe, leading to deformation or breakage. In addition, prolonged stuck drill bit conditions can increase the friction between the drill bit and the casing, resulting in accelerated wear or even damage to the drill bit, increasing the cost of equipment maintenance or replacement. Utility Model Content

[0005] The main purpose of this invention is to propose a new type of drilling equipment for underwater geology, which aims to facilitate the removal of the drill bit from the borehole.

[0006] To achieve the above objectives, this utility model proposes a novel drilling device for underwater geology, comprising:

[0007] The sleeve has an internal receiving space and an opening at the lower end that connects to the receiving space;

[0008] The drill pipe is movably disposed within the receiving space, and

[0009] The drill bit assembly comprises a drill bit body, movable parts and reset parts corresponding to the movable parts. The drill bit body is connected to the lower end of the drill rod and extends to the lower end of the sleeve through the open end. The number of movable parts is at least two, and each movable part is movably arranged on the side of the drill bit body. The side of the movable part away from the drill bit body is an abutting surface. The movable part has a drilling state and a recovery state. In the drilling state, the upper end of the abutting surface is located in the axial extension space of the accommodation space, and the lower end of the abutting surface is located outside the axial extension space of the accommodation space. In the recovery state, the upper end and the lower end of the abutting surface are located in the axial extension space of the accommodation space. When the drill rod moves upward, the abutting surface abuts against the inner wall of the drill rod to move the movable part from the drilling state to the recovery state. Each reset part is arranged between the drill bit body and the corresponding movable part. The reset part has elastic deformation to drive the movable part from the recovery state to the drilling state.

[0010] Optionally, the elastic part is a compression spring, one end of the compression spring abuts against the drill bit body, and the other end of the compression spring abuts against the corresponding movable part.

[0011] Optionally, both ends of the spring are welded and fixed to the drill bit body and the movable part.

[0012] Optionally, the material of the drill bit body and the movable part is alloy steel.

[0013] Optionally, the material of the sleeve is PVC (polyvinyl chloride).

[0014] Optionally, the drill rod is a seamless steel pipe, and the thickness is 6.5mm-16mm.

[0015] Optionally, the drill rod and the drill bit body are coupled through a self-locking spline structure.

[0016] Optionally, each movable part is provided with a baffle on both sides, and the baffle is fixed to the drill bit body. In the drilling state, the baffle seals the gap between the side of the movable part and the drill bit body.

[0017] Optionally, the lower end of each movable part is provided with a stop block corresponding to the two stop blocks.

[0018] Optionally, the stop block and the stop block are welded and fixed to the drill bit body.

[0019] The utility model discloses technical scheme is through setting sleeve, drill rod and drill head subassembly, wherein sleeve is equipped with containing space, and the lower extreme of sleeve is equipped with the open mouth intercommunication containing space, and drill rod is located in containing space, and drill head subassembly includes drill head body, at least two movable and sets up movable piece of drill head body lateral surface and the resettable spare of corresponding movable piece, and drill head body is connected in the lower extreme of drill rod, and is through the open mouth and extends to the lower extreme of sleeve, and the one side of movable piece is away from drill head body as the abutment surface, and the upper end of abutment surface is located in the axial extension space position of containing space, and the lower end of abutment surface is located in the axial extension space position outside containing space, and in the recovery state, the upper end and the lower end of abutment surface are located in the axial extension space position of containing space.

[0020] In this way, when drilling, the drill head subassembly can be directly lifted up to move the movable piece from the drilling state to the recovery state, and the drill head subassembly can be retracted into the containing space, so that the drill head subassembly can be conveniently taken out of the sleeve.

[0021] In this way, compared with the structure of complex mechanical control of the drill head subassembly deformation, the present application can realize the switching of drilling and recovery functions only by the up-down movement of the drill rod and the cooperation of the movable piece and the resettable spare, and the operation process is simpler and more convenient.

[0022] Moreover, the structure of the drill head subassembly is simpler, the cost is lower, and the maintenance is more convenient. Furthermore, the sleeve can protect the drill head subassembly from the hole wall collapse and frequent hole cleaning, can reduce the wear of the drill head subassembly, and can significantly reduce the operation cost and steadily improve the drilling efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the structure shown in the drawings without creative labor for those skilled in the art.

[0024] Figure 1 It is a structural schematic view of an embodiment of the novel drilling equipment for underwater geology of the utility model;

[0025] Figure 2 It is a structural schematic view of an embodiment of the novel drilling equipment for underwater geology of the utility model; Figure 1

[0026] Figure 3 It is a structural schematic view of an embodiment of the novel drilling equipment for underwater geology of the utility model; Figure 2 ​Structure diagram of the movable part from the drilling state to the recovery state;

[0027] Figure 4 For Figure 1 Structure diagram of the reset part.

[0028] Brief description of the drawings: 10, sleeve; 20, drill rod; 30, drill bit assembly; 31, drill bit body; 32, movable part; 33, reset part; 40, baffle; 50, stop block;

[0029] The realization, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. Specific implementation

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0031] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.

[0032] In addition, if the embodiments of the utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one feature. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel schemes. Taking "A and / or B" as an example, it includes the A scheme, or the B scheme, or the scheme in which A and B are satisfied at the same time. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0033] The utility model provides a kind of new drilling equipment for underwater geology.

[0034] In the embodiments of the utility model, as Figures 1 to 4As shown, the new drilling device for underwater geology includes a casing 10, a drill pipe 20 and a drill bit assembly 30; the casing 10 is internally provided with a containing space, and the lower end is provided with an open communication with the containing space; the drill pipe 20 is movably arranged in the containing space, and the drill bit assembly 30 includes a drill bit body 31, a movable piece 32 and a reset piece 33 corresponding to the movable piece 32; the drill bit body 31 is connected to the lower end of the drill pipe 20 and extends out of the lower end of the casing 10 through the opening; the number of the movable pieces 32 is at least two, and each is movably arranged on the side surface of the drill bit body 31; the surface of the movable piece 32 opposite to the drill bit body 31 is an abutting surface, and the movable piece 32 has a drilling state and a recovery state; in the drilling state, the upper end of the abutting surface is located in the axially extended space position of the containing space, and the lower end of the abutting surface is located out of the axially extended space position of the containing space; in the recovery state, the upper end and the lower end of the abutting surface are both located in the axially extended space position of the containing space; when the drill pipe 20 moves upward, the abutting surface abuts against the inner wall of the drill pipe 20 to make the movable piece 32 move from the drilling state to the recovery state; each reset piece 33 is arranged between the drill bit body 31 and the corresponding movable piece 32, and the reset piece 33 has an elastic deformation to drive the movable piece 32 to move from the recovery state to the drilling state.

[0035] Specifically, in the embodiment, the number of the movable pieces 32 is two; before the drilling work is performed, the casing 10 is first installed on a drilling machine, and then the drilling machine is started; at this time, the movable pieces 32 are in the drilling state under the action of the reset pieces 33, and the drilling device formally starts the drilling operation. The drill bit body 31 cuts and breaks the rock or soil into powder through rotation, and the powder is discharged out of the hole by using the pressurized water flow to form a blast hole.

[0036] When the drilling operation is completed and the drill bit assembly 30 needs to be recovered, the drill pipe 20 can be directly lifted to drive the drill bit assembly 30 to move upward, so that the abutting surface abuts against the casing 10, and the movable piece 32 is extruded by the casing 10 to move from the drilling state to the recovery state, and then the drill bit assembly 30 can be conveniently recovered from the casing 10. After recovery, the casing 10 can be left in the hole to form a pipe pile structure foundation to support the hole wall and avoid the collapse of the hole wall.

[0037] The utility model discloses technical scheme is through setting sleeve 10, drill rod 20 and drill head subassembly 30, wherein sleeve 10 is equipped with the containing space, and sleeve 10 lower extreme is equipped with the open mouth intercommunication containing space, and drill rod 20 is located in the containing space, and drill head subassembly 30 includes drill head body 31, at least two movable and set in the movable piece 32 of drill head body 31 side face and the reset piece 33 of corresponding movable piece 32 setting, drill head body 31 is connected in drill rod 20 lower extreme, and is through the open mouth and is stretched to the lower extreme of sleeve 10, and the back surface of movable piece 32 is away from drill head body 31 as the abutment face, and the upper end of abutment face is located in the axial extension space position of containing space, and the lower end of abutment face is located in the axial extension space position outside containing space, in the recovery state, and the upper end and the lower end of abutment face are located in the axial extension space position of containing space. In this way, when drilling, drill rod 20 rotates and drives drill head subassembly 30 to carry out drilling work, when drill head body 31 needs to be recovered, drill rod 20 can be directly lifted, the inner wall of drill rod 20 is abutted to the abutment face to make movable piece 32 move from the drilling state to the recovery state, and drill head subassembly 30 can be retracted into the containing space, so that drill head subassembly 30 is conveniently taken out from sleeve 10. Compared with the structure that the complex drill head subassembly 30 is deformed by mechanical control, the present scheme only relies on the up-and-down movement of drill rod 20 and the cooperation of movable piece 32 and reset piece 33 to realize the switching of drilling and recovery functions, and the operation process is simpler, and it is more convenient to recover drill head subassembly 30. Moreover, the structure of drill head subassembly 30 is simpler, the cost is lower, and maintenance is more convenient. And through the protection of sleeve 10, the problems of hole wall collapse and frequent hole cleaning are avoided, the wear of drill head subassembly 30 is reduced, and the operation cost is significantly reduced and the drilling efficiency is steadily improved.

[0038] It is worth mentioning that when underwater drilling is carried out by the novel drilling equipment for underwater geology provided by the utility model, due to the efficient drilling and easy removal characteristics of the drill head subassembly 30, the efficiency of underwater drilling and blasting operation can be significantly improved. This makes the operation process faster and smoother, reduces unnecessary delays and waiting time. Moreover, the drill head subassembly 30 has high durability and reusability, so the replacement frequency and quantity of the drill head subassembly 30 can be reduced. This not only reduces the procurement cost of the drill head, but also reduces the downtime and labor cost caused by replacing the drill head.

[0039] In some embodiments, the number of movable members 32 is set to three, and the three movable members 32 are evenly distributed on the outer side of the drill bit body 31. Compared with the case of two movable members 32, the drill bit body 31 is more stable during drilling, and the deflection, shaking or damage of the drill bit body 31 caused by uneven force is reduced, thereby improving the accuracy and quality of drilling and ensuring that the drilled hole wall is smoother and straighter. The number of movable members 32 can be allocated according to different types of rocks or soils that need to be drilled.

[0040] In some embodiments, the elastic member is a compression spring, one end of the compression spring abuts against the drill bit body 31, and the other end abuts against the corresponding movable member 32. Specifically, during drilling operation, the compression spring is in a state of being appropriately compressed, and the elastic force of the compression spring can stably push the movable member 32 to the drilling state; when the drill assembly 30 needs to be recovered, the drill pipe 20 is lifted, the abutting surface of the movable member 32 abuts against the inner wall of the casing 10, and the casing 10 exerts pressure on the movable member 32, at this time, the compression spring is further compressed, and the movable member 32 can smoothly change from the drilling state to the recovery state. When drilling operation is performed again, the drill pipe 20 is lowered, and the movable member 32 is no longer subjected to the pressure of the casing 10, the compression spring will push the movable member 32 from the recovery state back to the drilling state by virtue of the elastic restoring force. The compression spring structure is relatively simple, and compared with some complex mechanical reset structures, the compression spring is less likely to fail during long-term use, thereby reducing the maintenance frequency of the equipment due to damage of the elastic member and improving the durability and stability of the entire new drilling equipment for underwater geology.

[0041] In some embodiments, the two ends of the spring are welded and fixed to the drill bit body 31 and the movable member 32. Specifically, the spring can be tightly combined with the drill bit body 31 and the movable member 32 as a whole. During drilling, the drill bit body 31 rotates at high speed and bears a large impact force and vibration, and ordinary connection methods (such as clamping and sleeving) may cause the spring to loosen or even fall off due to these external forces. Welding fixation can effectively avoid this situation, ensure that the spring is always stably in the working position, ensure that the movable member 32 can smoothly switch between the drilling state and the recovery state according to the design requirements, and improve the stability and reliability of the equipment operation. Moreover, welding fixation omits some additional parts (such as bolts, nuts, buckles, etc.) for connecting the spring and the movable member 32 and the drill bit body 31, so that the structure of the entire drill assembly 30 is simpler.

[0042] In some embodiments, the material of the drill bit body 31 and the movable member 32 is alloy steel. Specifically, alloy steel has better corrosion resistance than ordinary steel, and can resist corrosion in harsh environments, so that the drill assembly 30 can maintain a good working state in long-term underwater operation.

[0043] In some embodiments, the sleeve 10 is made of PVC (polyvinyl chloride). Specifically, PVC has a relatively small density, so that the sleeve 10 is relatively light in weight, facilitating transportation, installation and disassembly, and has a relatively long service life. In other embodiments, the sleeve 10 can be made of metal.

[0044] In some embodiments, the drill rod 20 is a seamless steel pipe, and has a thickness of 6.5mm-16mm. Specifically, the appropriate thickness can be selected according to different working conditions such as the specific underwater drilling depth and geological conditions. For relatively shallow drilling or relatively soft geological conditions, a relatively thin drill rod 20 of about 6.5mm can be selected to reduce the cost and the overall weight of the equipment; while for deep drilling or complex geological conditions such as hard rock, a relatively thick drill rod 20 of 16mm can be selected to provide sufficient strength and rigidity to cope with greater stress.

[0045] In some embodiments, the drill rod 20 and the drill bit body 31 are coupled by a self-locking spline structure. Specifically, the self-locking spline structure usually has certain axial self-locking characteristics, which can generate axial locking force between the drill rod 20 and the drill bit body 31, preventing the drill bit body 31 from being relatively axially displaced from the drill rod 20 due to axial force during drilling. This axial self-locking function can effectively prevent the drill bit body 31 from loosening or even falling off, improve the reliability and stability of the connection, and ensure the safe performance of the drilling operation. In other embodiments, the drill rod 20 and the drill bit body 31 are connected and fixed by a flange structure.

[0046] In some embodiments, each movable piece 32 is provided with a baffle plate 40 on both sides, and the baffle plate 40 is fixed to the drill bit body 31. In the drilling state, the baffle plate 40 seals the gap between the side of the movable piece 32 and the drill bit body 31. Specifically, during drilling, especially in complex environments such as underwater, various impurities such as mud and sand may exist. The baffle plate 40 seals the gap between the movable piece 32 and the drill bit body 31, which can effectively prevent these impurities from entering the gap, thereby ensuring the stability of the drilling operation.

[0047] In some embodiments, the lower end of each movable piece 32 is provided with a stop block 50 corresponding to the two baffle plates 40. Specifically, the stop block 50 can further limit the movable piece 32 in the vertical direction, preventing the movable piece 32 from producing excessive up and down displacement due to excessive axial force or other external forces during drilling.

[0048] In some embodiments, the baffle 40 and the block 50 are both welded to the drill bit body 31. In particular, the welded structure makes the connection structure between the drill bit body 31, the baffle 40 and the block 50 stronger, the structure more stable, and the welding has a better sealing effect, so that the baffle 40 and the block 50 are tightly combined with the drill bit body 31, and the problem of poor sealing caused by other connection methods is reduced. In addition, in other embodiments, the baffle 40 and the block 50 are fixed to the drill bit body 31 by threaded fasteners.

[0049] The above only describes the preferred embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or the like made by using the content of the present application specification and drawings within the inventive concept of the present application is included in the patent protection scope of the present application.

Claims

1. A novel drilling apparatus for underwater geology, characterized by, include: The sleeve has an internal receiving space and an opening at the lower end that connects to the receiving space; The drill pipe is movably disposed within the receiving space, and A drill bit assembly includes a drill bit body, movable parts, and corresponding reset parts. The drill bit body is connected to the lower end of the drill rod and extends through the opening to the lower end of the casing. There are at least two movable parts, each movably disposed on the side of the drill bit body. The side of each movable part facing away from the drill bit body is an abutment surface. The movable part has a drilling state and a retracted state. In the drilling state, the upper end of the abutment surface is located within the axially extended space of the receiving space, and the lower end of the abutment surface is located outside the axially extended space of the receiving space. In the retracted state, both the upper and lower ends of the abutment surface are located within the axially extended space of the receiving space. When the drill rod moves upward, the abutment surface abuts against the inner wall of the drill rod, causing the movable part to move from the drilling state to the retracted state. Each reset part is disposed between the drill bit body and the corresponding movable part, and the reset part has an elastic deformation capable of driving the movable part from the retracted state to the drilling state.

2. The new drilling apparatus for underwater geology as claimed in claim 1, wherein, The elastic element is a compression spring, with one end of the compression spring abutting against the drill bit body and the other end abutting against the corresponding movable element.

3. The new drilling apparatus for underwater geology as claimed in claim 2, wherein, The two ends of the spring are welded and fixed to the drill bit body and the moving part.

4. The new type of drilling apparatus for underwater geology as claimed in claim 1, wherein, The drill bit body and the moving parts are made of alloy steel.

5. The new type of drilling apparatus for underwater geology as claimed in claim 1, wherein, The sleeve is made of PVC.

6. The new type of drilling apparatus for underwater geology as claimed in claim 1, wherein, The drill pipe is a seamless steel pipe with a thickness of 6.5mm to 16mm.

7. The new drilling apparatus for underwater geology as claimed in claim 1, wherein, The drill rod and the drill bit body are connected by a self-locking spline structure.

8. The new type of drilling apparatus for underwater geology as claimed in claim 1, wherein, Each of the movable parts is provided with baffles on both sides, and the baffles are fixed to the drill bit body. In the drilling state, the baffles seal the gap between the side of the movable part and the drill bit body.

9. The novel borehole apparatus for underwater geology as claimed in claim 8, wherein, Each of the movable parts has a corresponding stop at its lower end, and the stop is positioned between the two corresponding baffles.

10. The novel boring apparatus for underwater geology as claimed in claim 9, wherein, Both the baffle and the stop block are welded and fixed to the drill bit body.

Images