Combined type horizontal directional drilling bit

Abstract

The invention discloses a combined type horizontal directional drilling bit, and particularly relates to the technical field of horizontal directional drilling construction, the combined type horizontal directional drilling bit comprises a fixed cone, a central cone and a high-pressure water outlet; the central cone is mounted on the fixed cone; a plurality of high-pressure water outlets are formed in the fixed cone in an annular array; the fixed roller cone comprises a drill bit connecting square, a roller cone body A, a roller cone power head and a roller cone connecting port; the plurality of cone bodies A are uniformly arranged on the drill bit connecting part through the expanding and shrinking assembly; the cone power head is connected with the cone body A through a driving mechanism; the cone connector is fixedly arranged on the drill bit connector; the central cone comprises a cone body B, a spiral drilling head and a spiral connector; the spiral drilling head is arranged on the cone body B; the spiral connector is fixedly arranged on the cone body B; when horizontal directional drilling construction is conducted on a soil layer containing rocks and pebbles, rock breaking, pebble stripping and construction progress acceleration can be achieved, so that construction efficiency and construction quality can be improved, and energy conservation and environmental protection are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of horizontal directional drilling construction, and more specifically, to a combined horizontal directional drilling drill bit. Background Art

[0002] Horizontal directional drilling rig is a kind of construction machinery used for laying various underground public facilities (pipelines, cables, etc.) without excavating the ground surface. It is widely used in the laying of flexible pipelines such as water supply, electricity, telecommunications, natural gas, coal gas, and oil.

[0003] For example, a new type of horizontal directional drilling and reaming drill bit with a tooth arrangement provided by the Chinese utility model patent with publication number CN211647993U includes a drill body, a plurality of cutting units evenly distributed around the central axis of the drill body are arranged on the drill body, a plurality of cemented carbide teeth arranged in rows are arranged on the cutting units, and the cemented carbide teeth on the same cutting unit are distributed in a stepped manner, and the distance between the cemented carbide teeth on the same cutting unit and the central axis of the drill body increases successively along the direction from the front end to the rear end of the drill body. The utility model changes the arrangement of the alloy teeth on the drill body, and the wear degree of all the alloy teeth is the same, and there will be no situation of severe local wear, light local wear or even no wear, and the utilization rate of the alloy teeth is maximized.

[0004] The drill rod is drilled into the soil through a spiral drill to complete the drilling construction, and finally the PE pipeline is buried in the soil by pulling back. With the promotion of horizontal directional drilling construction, although this horizontal directional drilling method can achieve good construction effects on sandy soil, clay, and other ground conditions, the construction efficiency is too low for rock soil and pebble formations, and the construction cost is high. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a combined horizontal directional drilling drill bit, which can realize directional drilling construction on soil layers containing rocks and pebbles, improve construction efficiency, reduce construction costs, and improve the construction quality of directional drilling.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a combined horizontal directional drilling drill bit, comprising a fixed cone, a center cone and a high-pressure water outlet; the center cone is installed on the fixed cone; a plurality of high-pressure water outlets are arranged on the fixed cone in a ring array; the fixed cone comprises a drill bit connection side, a cone body A, a cone power head and a cone connection port; a plurality of the cone bodies A are arranged on the drill bit connection side in a ring array through an expansion and contraction component; the cone power head is connected to the cone body A through a driving mechanism; the cone connection port is fixed on the drill bit connection side; the center cone comprises a cone body B, a spiral drilling head and a spiral connection port; the spiral drilling head is arranged on the cone body B; the spiral connection port is fixed on the cone body B and is threadedly connected to the cone connection port.

[0007] As a further solution of the present invention: the expansion and contraction component includes a receiving groove, a through hole groove, a rotating disk, a limiting groove, a movable block and a limiting block; the drill bit connecting party is provided with a receiving groove; a plurality of through hole grooves are provided in a circular array in the receiving groove; the rotating disk is rotatably arranged in the receiving groove through a rotating shaft; a plurality of limiting grooves are provided on the rotating disk; the movable block is slidably arranged in the through hole groove and fixedly connected to the gear body A, and the gear body A is connected to the drill bit connecting party through a reinforcing component; the limiting block is movably arranged in the limiting groove and fixedly connected to the movable block.

[0008] As a further solution of the present invention: the limiting groove is an arc-shaped inclined structure, and the distance between the opposite ends of a plurality of the limiting grooves is smaller than the distance between the opposite ends of a plurality of the limiting grooves.

[0009] As a further solution of the present invention: the movable block is a U-shaped structure, and the length of the inner wall of the movable block is greater than the radius of the rotating disk.

[0010] As a further solution of the present invention: the expansion and contraction assembly further comprises a movable disk and a screw rod; the movable disk is slidably disposed in the accommodating groove through a guide assembly; the screw rod is threadedly connected to the movable disk and fixedly connected to the rotating disk.

[0011] As a further solution of the present invention: the reinforcement assembly includes a reinforcement groove and a reinforcement block; the drill bit connection side is provided with reinforcement grooves in a ring array; the reinforcement block is slidably arranged in the reinforcement groove, and the end of the reinforcement block passes through the reinforcement groove and is fixedly connected to the gear body A.

[0012] As a further solution of the present invention: the reinforcing block is an isosceles trapezoidal structure that is small at the top and large at the bottom.

[0013] As a further solution of the present invention: the guide assembly includes a guide groove and a guide block; a plurality of guide grooves are provided in a circular array in the accommodating groove; the guide block is slidably arranged in the guide groove, and the end of the guide block passes through the guide groove and is fixedly connected to the movable disk.

[0014] As a further solution of the present invention: it also includes a spring block; the two ends of the spring block are respectively fixedly connected to the inner wall of the guide groove and the guide block.

[0015] As a further solution of the present invention: the spring block is an arc-shaped structure, and the longitudinal section of the spring block is a wave-shaped structure.

[0016] The beneficial effects of the present invention are:

[0017] 1. The present invention sets a fixed cone, a center cone and a high-pressure water outlet, installs the fixed cone on the spiral drill rod through the cone connection port, and installs the center cone on the fixed cone. Then, the high-pressure water pipe of the horizontal directional drill bit is connected to the drilling rig water pump, and the high-pressure water outlet of the directional drill bit is checked to see if it is unobstructed. Subsequently, the drilling end of the horizontal directional drill bit is sent to the surface of the soil layer to be drilled through the drilling rig power device. During the drilling process, the horizontal directional drill bit breaks and peels off the rock layer in the soil, and the broken rock and soil are discharged by high-pressure water. Compared with the prior art, the present invention can break rocks and peel off pebbles when constructing horizontal directional drilling construction containing rock and pebble soil layers, speeding up the construction progress, thereby improving construction efficiency, improving construction quality, and saving energy and protecting the environment.

[0018] 2. The present invention sets an expansion and contraction component and a guide component. According to the size of the drill hole required, the button block on the screw is turned by a wrench or manually to rotate the screw, so that the rotating disk rotates in the accommodating groove through the rotating shaft, the movable disk is threadedly connected with the screw, the movable disk slides in the accommodating groove, and the guide block slides in the guide groove. When the rotating disk rotates, the inner wall of the limit groove squeezes the limit block, so that the limit block slides in the limit groove, the three movable blocks slide relative to or away from each other in the through hole groove, and the three gear bodies A move relative to or away from each other until the gear body A moves to a suitable position.

[0019] 3. The present invention sets a reinforcement component to enable the three gear bodies A to move relative to or away from each other, which will cause the reinforcement block to slide in the reinforcement groove. Since the reinforcement block is an isosceles trapezoidal structure with a small top and a large bottom, it can not only assist the movement of the gear body A, but also improve the stability of the movement of the gear body A.

[0020] 4. The present invention arranges a spring block so that the guide block slides in the guide groove, which causes the spring block to be stretched or contracted by force. The relative force generated by the force on the spring block can make the threaded connection between the movable disk and the screw more stable, thereby preventing the threaded connection between the movable disk and the screw from loosening due to factors such as vibration during the drilling process of the horizontal directional drilling bit, causing the position of the cone body A to shake, thereby affecting the use effect of the horizontal directional drilling bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 3 It is a cross-sectional view of the overall structure of the present invention;

[0024] Figure 4 It is a cross-sectional view of another state of the overall structure of the present invention;

[0025] Figure 5 A cross-sectional view of the drill bit connection side of the present invention;

[0026] Figure 6 It is a schematic diagram of the partial structure disassembly of the present invention;

[0027] Figure 7 It is a schematic diagram of the spring block structure of the present invention;

[0028] Figure 8 For the present invention Figure 4 Enlarged schematic diagram at point A in the middle.

[0029] In the figure:

[0030] 1. Fixed gear; 2. Center gear; 3. High-pressure water outlet; 4. Expansion and contraction assembly; 5. Strengthening assembly; 6. Guide assembly; 7. Spring block;

[0031] 101, drill bit connection side; 102, cone body A; 103, cone power head; 104, cone connection port;

[0032] 201, cone body B; 202, spiral drilling head; 203, spiral connection port;

[0033] 401, receiving groove; 402, through hole groove; 403, rotating disk; 404, limiting groove; 405, movable block; 406, limiting block; 407, movable disk; 408, screw;

[0034] 501, reinforcement groove; 502, reinforcement block;

[0035] 601. Guide groove; 602. Guide block. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In order to improve the construction efficiency and reduce the construction cost of rock soil and pebble strata, Figures 1 to 8 As shown, the present invention provides a combined horizontal directional drilling drill bit, including a fixed cone 1, a center cone 2 and a high-pressure water outlet 3; the center cone 2 is installed on the fixed cone 1; three high-pressure water outlets 3 are arranged on the fixed cone 1 in a ring array; the fixed cone 1 includes a drill bit connection square 101, a cone body A102, a cone power head 103 and a cone connection port 104; the three cone bodies A102 are arranged on the drill bit connection square 101 in a ring array through an expansion and contraction component 4; the cone power head 103 is connected to the cone body A102 through a driving mechanism; the cone connection port 104 is fixed on the drill bit connection square 101; the center cone 2 includes a cone body B201, a spiral drilling head 202 and a spiral connection port 203; the spiral drilling head 202 is arranged on the cone body B201; the spiral connection port 203 is fixed on the cone body B201 and is threadedly connected to the cone connection port 104.

[0038] A method for soil drilling construction using a combined horizontal directional drilling bit includes the following method: positioning a horizontal directional drilling rig at a construction site after measuring and positioning according to the construction site; installing the horizontal directional drilling bit on a spiral drill rod, connecting a high-pressure water pipe of the horizontal directional drilling bit to a water pump of the drilling rig; sending the drilling end of the horizontal directional drilling bit to the surface of the soil layer to be drilled through a power device of the drilling rig, and during the drilling process, the horizontal directional drilling bit breaks and peels off the rock layer in the soil, and washes the mud and sand out of the drill rod through high-pressure water

[0039] The present invention sets a fixed cone 1, a center cone 2 and a high-pressure water outlet 3, and installs the fixed cone 1 on the spiral drill rod through the cone connection port 104, and the center cone 2 is installed on the fixed cone 1. Then, the high-pressure water pipe of the horizontal directional drill bit is connected to the drilling rig water pump, and the high-pressure water outlet 3 of the directional drill bit is checked to see if it is unobstructed. Subsequently, the drilling end of the horizontal directional drill bit is sent to the surface of the soil layer to be drilled through the drilling rig power device. During the drilling process, the horizontal directional drill bit breaks and peels off the rock layer in the soil body, and the broken rock and soil are discharged by high-pressure water. Compared with the prior art, the present invention can break rocks and peel off pebbles when constructing horizontal directional drilling construction containing rock and pebble soil layers, and speed up the construction progress, thereby improving construction efficiency, improving construction quality, and saving energy and environmental protection.

[0040] In order to avoid replacing horizontal directional drilling bits of different diameters for different required drilling sizes, an expansion and contraction component 4 and a guide component 6 are provided to reduce the use cost and improve applicability. Specifically, the expansion and contraction component 4 includes a receiving groove 401, a through hole groove 402, a rotating disk 403, a limiting groove 404, a movable block 405, a limiting block 406, a movable disk 407 and a screw 408; a receiving groove 401 is provided on the drill bit connecting side 101; three through hole grooves 402 are provided in a circular array in the receiving groove 401; the rotating disk 403 is rotatably arranged in the receiving groove 401 through a rotating shaft; three limiting grooves 404 are provided on the rotating disk 403; the movable block 405 is slidably penetrated in the through hole groove 402 and is fixedly connected to the gear body A102, and the gear body A102 is connected to the drill bit through the reinforcing component 5. The limiting block 406 is movably arranged in the limiting groove 404 and is fixedly connected to the movable block 405; the limiting groove 404 is an arc-shaped inclined structure, and the distance between the opposite ends of the three limiting grooves 404 is smaller than the distance between the opposite ends of the three limiting grooves 404, so as to facilitate the limiting block 406 to be squeezed through the inner wall of the limiting groove 404, so that the three movable blocks 405 move relative to or away from each other; the movable block 405 is a U-shaped structure, and the length of the inner wall of the movable block 405 is larger than the radius of the rotating disk 403, so as to avoid the movable block 405 from contacting the rotating disk 403 and affecting the moving range of the gear body A102; the movable disk 407 is slidably arranged in the accommodating groove 401 through the guide assembly 6; the screw 408 is screwed on the movable disk 407 and is fixedly connected to the rotating disk 403;

[0041] The guide assembly 6 includes a guide groove 601 and a guide block 602 ; three guide grooves 601 are provided in a circular array in the accommodating groove 401 ; the guide block 602 is slidably disposed in the guide groove 601 , and the end of the guide block 602 passes through the guide groove 601 and is fixedly connected to the movable disk 407 .

[0042] The present invention sets an expansion and contraction component 4 and a guide component 6. According to the size of the required ground hole, the button on the screw 408 is turned by a wrench or manually to rotate the screw 408, so that the rotating disk 403 rotates in the accommodating groove 401 through the rotating shaft, the movable disk 407 is threadedly connected with the screw 408, the movable disk 407 slides in the accommodating groove 401, and the guide block 602 slides in the guide groove 601. When the rotating disk 403 rotates, the inner wall of the limit groove 404 squeezes the limit block 406, so that the limit block 406 slides in the limit groove 404, the three movable blocks 405 slide relative to or away from each other in the through hole groove 402, and the three gear bodies A102 move relative to or away from each other until the gear body A102 moves to a suitable position.

[0043] In order to improve the stability of the movement of the gear body A102, a reinforcement component 5 is provided. Specifically, the reinforcement component 5 includes a reinforcement groove 501 and a reinforcement block 502; the drill bit connection square 101 is provided with reinforcement grooves 501 in a ring array; the reinforcement block 502 is slidably arranged in the reinforcement groove 501, and the end of the reinforcement block 502 passes through the reinforcement groove 501 and is fixedly connected to the gear body A102; the reinforcement block 502 is an isosceles trapezoidal structure with a small upper part and a large lower part.

[0044] The present invention sets a reinforcing component 5 to enable the three gear bodies A102 to move relative to or away from each other, which will cause the reinforcing block 502 to slide in the reinforcing groove 501. Since the reinforcing block 502 is an isosceles trapezoidal structure with a small top and a large bottom, it can not only assist the movement of the gear body A102, but also improve the stability of the movement of the gear body A102.

[0045] In order to prevent the threaded connection between the movable disk 407 and the screw rod 408 from loosening due to factors such as vibration during the drilling process of the horizontal directional drill bit, a spring block 7 is now provided to improve the stability of the threaded connection between the movable disk 407 and the screw rod 408. Specifically, the spring block 7 is also included; the two ends of the spring block 7 are fixedly connected to the inner wall of the guide groove 601 and the guide block 602 respectively. In order to prevent the position of the spring block 7 from shaking, a telescopic plate can be arranged in the guide groove 601 so that the spring block 7 is located between the guide groove 601 and the telescopic plate; compared with the spring, the spring block 7 has the advantages of simple structure, high reliability, light weight, small space occupation and low cost; the spring block 7 is an arc structure, and the longitudinal section of the spring block 7 is a wave-shaped structure, so that the spring block 7 has a movable margin, so that the spring block 7 can be stretched or contracted; when the limit block 406 contacts the inner wall of the opposite side of the three limit grooves 404, the reinforcement block 502 is still in the reinforcement groove 501, and the guide block 602 does not contact the inner wall of the guide groove 601.

[0046] The present invention arranges the spring block 7 so that the guide block 602 slides in the guide groove 601, which causes the spring block 7 to be stretched or contracted by force. The relative force generated by the force on the spring block 7 can make the threaded connection between the movable disk 407 and the screw 408 more stable, thereby preventing the threaded connection between the movable disk 407 and the screw 408 from loosening due to factors such as vibration during the drilling process of the horizontal directional drilling bit, causing the position of the gear body A102 to shake, thereby affecting the use effect of the horizontal directional drilling bit.

[0047] The working principle of the present invention is as follows: when in use, first, according to the size of the required ground hole, the button on the screw rod 408 is rotated by a wrench or manually, so that the screw rod 408 rotates, and the rotating disk 403 rotates in the receiving groove 401 through the rotating shaft, so that the movable disk 407 is threadedly connected with the screw rod 408, so that the movable disk 407 slides in the receiving groove 401, and the guide block 602 slides in the guide groove 601, so that the spring block 7 is stretched or contracted by force, and when the rotating disk 403 rotates, the inner wall of the limiting groove 404 squeezes the limiting block 406, so that the limiting block 406 slides in the limiting groove 404, and the three movable blocks 405 slide relative to or away from each other in the through hole groove 402, so that the three gear bodies A102 move relative to or away from each other, so that the loading The reinforcement block 502 slides in the reinforcement groove 501 until the gear body A102 moves to a suitable position. At this time, the screw 408 is no longer rotated, and the relative force generated by the force of the spring block 7 can make the threaded connection between the movable disk 407 and the screw 408 more stable. Then, the fixed gear 1 is installed on the spiral drill rod through the gear connection port 104, and the center gear 2 is installed on the fixed gear 1. Then, the high-pressure water pipe of the horizontal directional drill bit is connected to the drilling rig water pump to check whether the high-pressure water outlet 3 of the directional drill bit is unobstructed. Subsequently, the drilling end of the horizontal directional drill bit is sent to the surface of the soil layer to be drilled through the drilling rig power device. During the drilling process, the horizontal directional drill bit breaks and peels off the rock layer in the soil, and the broken rock and soil are discharged through high-pressure water.

[0048] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0049] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A combined horizontal directional drilling bit, characterized in that: The invention comprises a fixed cone (1), a center cone (2) and a high-pressure water outlet (3); the center cone (2) is mounted on the fixed cone (1); a plurality of high-pressure water outlets (3) are arranged in a ring array on the fixed cone (1); the fixed cone (1) comprises a drill bit connection side (101), a cone body A (102), a cone power head (103) and a cone connection port (104); a plurality of the cone bodies A (102) are arranged in a ring array on the drill bit connection side (101) through an expansion and contraction assembly (4). ); the cone power head (103) is connected to the cone body A (102) through a driving mechanism; the cone connection port (104) is fixedly arranged on the drill bit connection side (101); the center cone (2) comprises a cone body B (201), a spiral drilling head (202) and a spiral connection port (203); the spiral drilling head (202) is arranged on the cone body B (201); the spiral connection port (203) is fixedly arranged on the cone body B (201) and is threadedly connected to the cone connection port (104).

2. A combined horizontal directional drilling bit according to claim 1, characterized in that: The expansion and contraction assembly (4) comprises a receiving groove (401), a through hole groove (402), a rotating disk (403), a limiting groove (404), a movable block (405) and a limiting block (406); the drill bit connecting side (101) is provided with a receiving groove (401); a plurality of through hole grooves (402) are provided in a ring array in the receiving groove (401); the rotating disk (403) is rotatably arranged in the receiving groove (401) through a rotating shaft; a plurality of limiting grooves (404) are provided on the rotating disk (403); the movable block (405) is slidably arranged in the through hole groove (402) and is fixedly connected to the gear body A (102), and the gear body A (102) is connected to the drill bit connecting side (101) through a reinforcing assembly (5); the limiting block (406) is movably arranged in the limiting groove (404) and is fixedly connected to the movable block (405).

3. A combined horizontal directional drilling bit according to claim 2, characterized in that: The limiting groove (404) is an arc-shaped inclined structure, and the distance between the opposite ends of a plurality of the limiting grooves (404) is smaller than the distance between the opposite ends of a plurality of the limiting grooves (404).

4. A combined horizontal directional drilling bit according to claim 2, characterized in that: The movable block (405) is a U-shaped structure, and the length of the inner wall of the movable block (405) is greater than the radius of the rotating disk (403).

5. The combined horizontal directional drilling bit according to claim 2, characterized in that: The expansion and contraction assembly (4) further comprises a movable disk (407) and a screw rod (408); the movable disk (407) is slidably disposed in the receiving groove (401) via a guide assembly (6); the screw rod (408) is screwed onto the movable disk (407) and fixedly connected to the rotating disk (403).

6. A combined horizontal directional drilling bit according to claim 2, characterized in that: The reinforcement assembly (5) comprises a reinforcement groove (501) and a reinforcement block (502); the drill bit connection side (101) is provided with reinforcement grooves (501) in a ring array; the reinforcement block (502) is slidably arranged in the reinforcement groove (501), and the end of the reinforcement block (502) passes through the reinforcement groove (501) and is fixedly connected to the gear body A (102).

7. A combined horizontal directional drilling bit according to claim 6, characterized in that: The reinforcing block (502) is an isosceles trapezoidal structure that is smaller at the top and larger at the bottom.

8. The combined horizontal directional drilling bit according to claim 5, characterized in that: The guide assembly (6) comprises a guide groove (601) and a guide block (602); a plurality of guide grooves (601) are provided in a circular array in the accommodating groove (401); the guide block (602) is slidably arranged in the guide groove (601), and the end of the guide block (602) passes through the guide groove (601) and is fixedly connected to the movable disk (407).

9. A combined horizontal directional drilling bit according to claim 8, characterized in that: It also includes a spring block (7); two ends of the spring block (7) are respectively fixedly connected to the inner wall of the guide groove (601) and the guide block (602).

10. The combined horizontal directional drilling bit according to claim 9, characterized in that: The spring block (7) is an arc-shaped structure, and the longitudinal section of the spring block (7) is a wave-shaped structure.

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