Novel drilling equipment for underwater drilling blasting

Abstract

The utility model discloses novel drilling equipment for underwater drilling and blasting. The novel drilling equipment comprises a sleeve, a drill rod and a drill bit assembly. An accommodating space is formed in the sleeve, and an opening is formed in the lower end and communicated with the accommodating space; the drill rod is movably arranged in the containing space, the drill bit assembly comprises a drill bit body and at least two 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 two movable parts are movably arranged on the side face of the drill bit body and have a drilling state and a recycling state. In the drilling state, the two movable parts are located in the space position where the containing space extends in the axial direction, and in the recovery state, at least part of the two movable parts stretch out of the space position where the containing space extends in the axial direction. According to the technical scheme, the structure of the underwater drilling and blasting equipment can be simplified.

Description

TECHNICAL FIELD

[0001] The utility model relates to underwater drilling and blasting technical field especially relates to a new type drilling equipment for underwater drilling and blasting. BACKGROUND

[0002] Underwater drilling and blasting technology is through drilling underwater, then fills explosive and carries out blasting to reach the purpose of breaking rock mass or improving the waterway. This technology has wide application range in underwater engineering, such as river regulation, underwater foundation trench and groove excavation, bridge foundation construction, wharf construction and maintenance etc.

[0003] But the drill pipe needs frequently to be raised and lowered in the drilling process, which not only increases operation time and cost, but also may cause borehole wall collapse, borehole wall keyway and step and other drilling accidents. The casing drilling technology realizes two-in-one of drilling and casing operation by canceling the drill pipe tripping process, thereby greatly improving drilling efficiency and safety. But the existing drill bit convenient to take out usually has complex internal structure, and it is inconvenient to maintain and overhaul, and the cost consumption is high. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a new type drilling equipment for underwater drilling and blasting, which aims at simplifying the structure of underwater drilling and blasting equipment.

[0005] To achieve the above purpose, the new type drilling equipment for underwater drilling and blasting provided by the utility model comprises:

[0006] The casing is internally provided with an accommodating space, and the lower end is provided with an open end communicating with the accommodating space;

[0007] The drill pipe is movably arranged in the accommodating space, and

[0008] The drill bit assembly comprises a drill bit body and at least two movable parts, the drill bit body is connected to the lower end of the drill pipe and extends out of the lower end of the casing through the open end, the two movable parts are movably arranged on the side surface of the drill bit body and have a drilling state and a recovery state, in the drilling state, the two movable parts are located in the axially extended space position of the accommodating space, in the recovery state, the two movable parts at least partially extend out of the axially extended space position of the accommodating space.

[0009] Optionally, the new type drilling equipment for underwater drilling and blasting further comprises a transmission part and a hinge, the hinge has a fixed end, a movable end and a rotating shaft, the fixed end is fixed to the drill bit body, the movable part is mounted on the movable end, the transmission part is connected to the rotating shaft and can drive the rotating shaft to move upwards to make the movable end and the fixed end close to each other, thereby driving the movable part to move from the drilling state to the recovery state.

[0010] Optionally, the transmission member is a steel wire rope, and the steel wire rope is connected to the rotating shaft.

[0011] Optionally, the drill bit body and the movable members are made of alloy steel.

[0012] Optionally, the sleeve is made of PVC (polyvinyl chloride).

[0013] Optionally, the drill rod is a seamless steel pipe, and the thickness is 6.5mm-16mm.

[0014] Optionally, the drill rod and the drill bit body are coupled by a self-locking spline structure.

[0015] Optionally, each movable member is provided with a baffle on both sides, the baffle is fixed to the drill bit body, and the baffle seals the gap between the side surface of the movable member and the drill bit body in the drilling state.

[0016] Optionally, the lower end of each movable member is provided with a stop block corresponding to the two baffles.

[0017] Optionally, the baffles and the stop blocks are welded to the drill bit body.

[0018] The technical scheme of the utility model discloses a sleeve, a drill rod and a drill bit assembly, wherein the sleeve is provided with an accommodating space, the lower end of the sleeve is provided with an open communication accommodating space, the drill rod is located in the accommodating space, and the drill bit assembly comprises a drill bit body and at least two movable members movably arranged on the side surface of the drill bit body, the radial dimension between the outer ends of the two movable members is greater than the radial dimension of the accommodating space in the drilling state, and the distance between the outer ends of the two movable members is less than the radial dimension of the accommodating space in the recovery state. In this way, in the drilling state, the drill bit assembly cannot be retracted into the sleeve, and when the drill bit body needs to be recovered, the movable members are controlled to be moved to the recovery state, and the drill bit assembly can be retracted into the accommodating space, so that the drill bit assembly can be conveniently taken out of the sleeve. Compared with the drill bit with a complex overall deformation, the movable members are movably arranged on the side surface of the drill bit body, so that the drill bit can be conveniently recovered, the structure is simpler, the cost is lower, and maintenance is more convenient. Moreover, the sleeve protects the drill bit, avoids frequent hole cleaning, indirectly reduces the wear of the drill bit, and further realizes significant reduction of operation cost and steady improvement of drilling efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below only constitute some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0020] Figure 1 The structure diagram of an embodiment of the novel drilling equipment for underwater drilling blasting of the present application;

[0021] Figure 2 The structure diagram of another view in the present application; Figure 1 The structure diagram of another view in the present application;

[0022] Figure 3 The structure diagram of another view in the present application; Figure 2 The structure diagram of the movable part from the drilling state to the recovery state in the present application.

[0023] The structure diagram of another view in the present application;

[0024] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only constitute some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0026] It should be noted that if the present application embodiments 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 the components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0027] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one feature. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B schemes. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary technical personnel, 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.

[0028] The utility model proposes a novel drilling equipment for underwater drilling blasting.

[0029] In the embodiments of the utility model, as shown in Figures 1 to 3 The novel drilling equipment for underwater drilling blasting includes a casing 10, a drill rod 20 and a drill bit assembly 30. The casing 10 has an accommodating space inside and an open end at the lower end to communicate with the accommodating space. The drill rod 20 is movably arranged in the accommodating space. The drill bit assembly 30 includes a drill bit body 31 and at least two movable members 32. The drill bit body 31 is connected to the lower end of the drill rod 20 and extends out of the lower end of the casing 10 through the open end. The two movable members 32 are movably arranged on the side surface of the drill bit body 31 and have a drilling state and a recovery state. In the drilling state, the two movable members 32 are located in the axially extended space position of the accommodating space. In the recovery state, the two movable members 32 at least partially extend out of the axially extended space position of the accommodating space.

[0030] Specifically, in the embodiment, the number of movable members 32 is two. Before drilling work is performed, the sleeve 10 is first installed on the drilling machine, and then the drilling machine is started. At this time, the movable members 32 are in the drilling state, and the novel drilling equipment formally performs drilling work. The drill bit body 31 is cut by rotation to break rocks or soil into powder, and the powder is discharged out of the hole by using a pressurized water flow to form a blast hole.

[0031] When the drilling work is completed and the drill bit assembly 30 needs to be lifted again, the two movable members 32 can be controlled to move to the recovery state, so that the drill bit assembly 30 can be retracted into the accommodating space, thereby facilitating the recovery of the drill bit assembly 30. The casing 10 is left in place to form a pipe pile structure foundation to support the hole wall and prevent the hole wall from collapsing.

[0032] 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 and at least two movable and set in the movable piece 32 of drill head body 31 side, in the drill hole state, two movable pieces 32 are located in the space position of the axial extension of containing space, in the recovery state, two movable pieces 32 at least partial stretch out the space position of the axial extension of containing space. When drilling, drill head subassembly 30 cannot be retracted into sleeve 10, when drill head body 31 needs to be recovered, through the control movable piece 32 and move to be in the recovery state, drill head subassembly 30 can be retracted into the containing space, thereby conveniently taking out drill head subassembly 30 from sleeve 10. Compared with the drill head of complex integral deformation, the movable piece 32 can be movably arranged on the side of drill head body 31, and the drill head can be conveniently recovered, so that the structure is simpler, the cost is lower, and the 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.

[0033] It is worth mentioning that when underwater drilling is carried out by the novel drilling device for underwater drilling and blasting 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. 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.

[0034] In some embodiments, the number of movable pieces 32 is set to three, and the three movable pieces 32 are uniformly distributed on the outside of the drill head body 31. Compared with the case of two movable pieces 32, the drill head body 31 can be more stable during drilling, reducing the deflection, shaking or damage of the drill head body 31 caused by uneven stress, thereby improving the accuracy and quality of drilling and ensuring that the drilled hole wall is smoother and straighter. The number of movable pieces 32 can be allocated according to the different types of rocks or soil that need to be drilled.

[0035] In some embodiments, the new drilling device for underwater drilling and blasting further comprises a transmission member and a hinge 41 having a fixed end, a movable end and a rotating shaft, the fixed end is fixed to the drill bit body 31, the movable member 32 is installed on the movable end, the transmission member is connected to the rotating shaft and can drive the rotating shaft to move upwards to make the movable end and the fixed end approach each other, thereby driving the movable member 32 to move from the drilling state to the recovery state. Specifically, the structure of the rotating shaft of the hinge 41 makes the movement trajectory of the movable member 32 relatively fixed, and under the driving of the transmission member, the movement process of the movable member 32 from the drilling state to the recovery state is more stable, reducing the possibility of shaking or deviation of the movable member 32 during movement, which helps to ensure the stability of the overall performance of the drill bit assembly 30 and improve the quality and efficiency of underwater drilling operations. Moreover, such state switching of the movable member 32 by driving the rotating shaft of the hinge 41 through the transmission member has a relatively simple structure and low cost, and it is easier to locate and solve possible problems during maintenance and repair in the later period, thereby improving the maintainability of the device. At the same time, the hinge 41 structure is also relatively easy to install, and the staff is easy to operate.

[0036] In some embodiments, the hinge 41 is a one-way hinge 41, which can only rotate in one direction. This design makes the rotating shaft not move below the fixed end and the movable end when the drill bit is drilling, and the structure on both sides will not be retracted. At the same time, since it can only be opened in one direction, it can also effectively prevent accidental opening or closing, thereby improving safety. In the later period, only the fastening condition and lubrication condition of the hinge 41 need to be checked regularly to ensure its normal operation.

[0037] In some embodiments, the transmission member is a steel wire rope 42 connected to the rotating shaft. Specifically, by lifting the steel wire rope 42, the movable member 32 is driven to move from the drilling state to the recovery state, and at the same time, the drill bit assembly 30 is also driven to move upwards. This makes it more convenient to operate when recovering the drill bit assembly 30, avoiding the need to separately set structures to drive the recovery of the drill bit body 31 and the movement of the movable member 32, thereby simplifying the structure of the underwater drilling and blasting device and reducing costs.

[0038] 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 bit assembly 30 can maintain good working condition in long-term underwater operation.

[0039] In some embodiments, the material of the sleeve 10 is PVC (polyvinyl chloride). Specifically, the density of PVC material is relatively small, making the entire sleeve 10 lighter in weight, facilitating transportation, installation and disassembly, and having a longer service life. In other embodiments, the material of the sleeve 10 can be metal.

[0040] In some embodiments, the drill pipe 20 is a seamless steel pipe, and the thickness is 6.5mm-16mm. Specifically, the appropriate thickness can be selected according to the specific underwater drilling depth, geological conditions, and other different working conditions. For relatively shallow drilling or relatively soft geological conditions, a relatively thin drill pipe 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 pipe 20 of 16mm can be selected to provide sufficient strength and rigidity to cope with greater stress.

[0041] In some embodiments, the drill pipe 20 and the drill bit body 31 are coupled by a self-locking spline structure. Specifically, the self-locking spline structure generally has certain axial self-locking characteristics, which can generate axial locking force between the drill pipe 20 and the drill bit body 31 to prevent the drill bit body 31 from being displaced relative to the drill pipe 20 in the axial direction 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 operation of the drilling operation. In addition, in other embodiments, the drill pipe 20 and the drill bit body 31 are connected and fixed by a flange structure.

[0042] In some embodiments, each movable piece 32 is provided with a baffle plate 51 on both sides, and the baffle plate 51 is fixed to the drill bit body 31. In the drilling state, the baffle plate 51 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 51 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.

[0043] In some embodiments, the lower end of each movable piece 32 is provided with a stop block 52 corresponding to the two baffle plates 51. Specifically, the stop block 52 can further limit the vertical displacement of the movable piece 32, preventing the movable piece 32 from being displaced excessively upward or downward due to excessive axial force or other external forces during drilling.

[0044] In some embodiments, the baffle plate 51 and the stop block 52 are welded to the drill bit body 31. Specifically, such a welded structure makes the connection between the drill bit body 31, the baffle plate 51 and the stop block 52 stronger and more stable, and the welding has good sealing effect, which makes the baffle plate 51 and the stop block 52 tightly combined with the drill bit body 31, reducing the problem of poor sealing caused by other connection methods. In addition, in other embodiments, the baffle plate 51 and the stop block 52 are fixed to the drill bit body 31 by threaded fasteners.

[0045] The above merely describes preferred embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation or direct / indirect application in other related technical fields under the inventive concept of the present application, and by using the content of the present application specification and drawings, are included in the patent protection scope of the present application.

Claims

1. A novel drilling apparatus for underwater borehole blasting, characterized in that, The utility model relates to a new type of drilling equipment for underwater drilling blasting, which comprises a sleeve, a drill rod and a drill bit assembly. The sleeve has an accommodation space inside and an open end at the lower end for communicating with the accommodation space. The drill rod is movably arranged in the accommodation space. The drill bit assembly comprises a drill bit body and at least two movable members.

2. The novel drilling apparatus for underwater borehole blasting as claimed in claim 1, wherein, The drill bit body is connected to the lower end of the drill rod and extends out of the lower end of the sleeve through the open end.

3. The novel drilling apparatus for underwater borehole blasting as claimed in claim 2, wherein, The two movable members are movably arranged on the side surface of the drill bit body and have a drilling state and a recovery state.

4. The novel drilling apparatus for underwater borehole blasting as claimed in claim 1, wherein, In the drilling state, the two movable members are located in the axially extended space position of the accommodation space.

5. The novel drilling apparatus for underwater borehole blasting as claimed in claim 1, wherein, In the recovery state, the two movable members at least partially extend out of the axially extended space position of the accommodation space.

6. The novel drilling apparatus for underwater borehole blasting as claimed in claim 1, wherein, The new type of drilling equipment for underwater drilling blasting further comprises a transmission member and a hinge.

7. The novel drilling apparatus for underwater borehole blasting as claimed in claim 1, wherein, The hinge has a fixed end, a movable end and a rotating shaft.

8. The novel drilling apparatus for underwater borehole blasting as claimed in claim 1, wherein, The fixed end is fixed to the drill bit body.

9. The novel drilling apparatus for underwater borehole blasting as claimed in claim 8, wherein, The movable member is mounted on the movable end.

10. The novel drilling apparatus for underwater borehole blasting as claimed in claim 9, wherein, The transmission member is connected to the rotating shaft and can drive the rotating shaft to move upwards to make the movable end and the fixed end approach each other, thereby driving the movable member to move from the drilling state to the recovery state. The transmission member is a steel wire rope. The steel wire rope is connected to the rotating shaft. The drill bit body and the movable member are made of alloy steel. The sleeve is made of PVC. The drill rod is a seamless steel pipe with a thickness of 6.5mm-16mm. The drill rod and the drill bit body are coupled through a self-locking spline structure. Both sides of each movable member are provided with a baffle. The baffle is fixed to the drill bit body. In the drilling state, the baffle seals the gap between the side surface of the movable member and the drill bit body. The lower end of each movable member is correspondingly provided with a stop block. The stop block is sealed between the corresponding two baffles. The baffle and the stop block are both welded and fixed to the drill bit body.

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