Combined type horizontal directional drilling bit

Abstract

The utility model discloses a combined type horizontal directional drilling bit, which particularly relates to the technical field of horizontal directional drilling construction and 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 the horizontal directional drilling device is used for horizontal directional drilling construction of a soil layer containing rocks and pebbles, the rocks can be broken, the pebbles can be stripped, and the construction progress can be accelerated, so that the construction efficiency can be improved, the construction quality can be improved, and energy conservation and environmental protection are realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to horizontal directional drilling construction technical field more specifically, the utility model relates to a combined horizontal directional drilling drill bit. BACKGROUND

[0002] Horizontal directional drilling machine is a kind of construction machinery for laying various underground public facilities (piping, cable, etc.) under the condition of not excavating surface, which is widely used in water supply, power, telecommunications, natural gas, coal gas, oil and other flexible pipeline laying construction.

[0003] Such as the utility model discloses a new tooth's horizontal directional drilling reamer drill bit provided in CN211647993U, including drill bit body, a plurality of cutting units are evenly distributed around the drill bit body center axis on the drill bit body, a plurality of hard alloy teeth arranged into rows are arranged on the cutting unit, the hard alloy teeth on the same cutting unit are distributed in a stepped manner, along the direction from the front end to the rear end of the drill bit body, the spacing between the hard alloy teeth on the same cutting unit and the drill bit body center axis increases in turn.The utility model changes the arrangement mode of alloy tooth on the drill bit body, the wear degree of all alloy teeth is same, and the situations of local serious wear, local light wear or even no wear do not occur, and the utilization rate of alloy tooth reaches the highest.

[0004] Through the auger drill, drill pipe is drilled into the soil, so as to complete drilling construction, finally, PE pipeline is buried in the soil by back dragging, with the popularization of horizontal directional drilling construction, this horizontal directional drilling drilling mode can play a good construction effect on sandy soil, clay and other ground conditions, but the construction efficiency is too low for rock stratum and pebble stratum, and the construction cost is large. UTILITY MODEL CONTENTS

[0005] In order to overcome the above-mentioned defects of prior art, the utility model provides a combined horizontal directional drilling drill bit, which can realize directional drilling construction for rock and pebble stratum, improve construction efficiency, reduce construction cost and improve the construction quality of directional drilling.

[0006] To achieve the above object, the utility model provides the following technical scheme: a combined horizontal directional drilling drill bit, including fixed cone, center cone and high pressure water outlet, the center cone is installed on the fixed cone, a plurality of high pressure water outlets are arranged in annular array on the fixed cone, the fixed cone includes drill bit connection square, cone body A, cone power head and cone connecting port, a plurality of cone body A are arranged on the drill bit connection square in annular array through expansion and contraction subassembly, the cone power head is connected with cone body A through drive mechanism, the cone connecting port is fixed on the drill bit connection square, the center cone includes cone body B, spiral drilling head and screw connecting port, the spiral drilling head is arranged on the cone body B, the screw connecting port is fixed on the cone body B and is connected with the cone connecting port screw.

[0007] As a further scheme of the utility model: the expansion and contraction subassembly includes accommodating groove, through hole groove, rotating disc, limiting groove, movable block and limiting block, the drill bit connection square is provided with accommodating groove, a plurality of through hole grooves are arranged in annular array in the accommodating groove, the rotating disc is rotatably arranged in the accommodating groove through the pivot, a plurality of limiting grooves are formed in the rotating disc, the movable block is slidably arranged in the through hole groove and is fixedly connected with the cone body A, and the cone body A is connected with the drill bit connection square through the reinforcing subassembly, the limiting block is movably arranged in the limiting groove and is fixedly connected with the movable block.

[0008] As a further scheme of the utility model: the limiting groove is arc inclined structure, and the distance size between the opposite ends of a plurality of limiting grooves is less than the distance size between the ends deviating from each other of a plurality of limiting grooves.

[0009] As a further scheme of the utility model: the movable block is U-shaped structure, and the inner wall length size of the movable block is greater than the radius size of the rotating disc.

[0010] As a further scheme of the utility model: the expansion and contraction subassembly further includes movable disc and screw rod, the movable disc is slidably arranged in the accommodating groove through the guide subassembly, and the screw rod is screwed on the movable disc and is fixedly connected with the rotating disc.

[0011] As a further scheme of the utility model: the reinforcing subassembly includes reinforcing groove and reinforcing block, the drill bit connection square is provided with reinforcing groove in annular array, the reinforcing block is slidably arranged in the reinforcing groove, and the end of the reinforcing block passes through the reinforcing groove and is fixedly connected with the cone body A.

[0012] As a further scheme of the utility model: the reinforcing block is isosceles trapezoidal structure that is small at the top and large at the bottom.

[0013] As a further scheme of the utility model: the guiding assembly includes a guiding groove and a guiding block; a plurality of guiding grooves are arranged in an annular array in the accommodating groove; the guiding block is slidably arranged in the guiding groove, and the end of the guiding block is fixedly connected with the movable disc through the guiding groove.

[0014] As a further scheme of the utility model: it further includes a spring block; the spring block is fixedly connected with the inner wall of the guiding groove and the guiding block at two ends.

[0015] As a further scheme of the utility model: the spring block is of an arc structure, and the longitudinal section of the spring block is of a wave structure.

[0016] The utility model has the advantages of:

[0017] 1. The utility model discloses a horizontal directional drilling head, which comprises a fixed cone, a center cone and a high-pressure water outlet, the fixed cone is installed on the spiral drill rod through a cone connecting port, the center cone is installed on the fixed cone, then, the horizontal directional drilling head high-pressure water pipe is connected with the drilling machine water pump, whether the directional drilling head high-pressure water outlet is unobstructed is checked, then, the drilling end of the horizontal directional drilling head is sent to the surface of the to-be-drilled soil layer through the drilling machine power device.

[0018] 2. The utility model discloses an expansion and contraction assembly and a guiding assembly, according to the size of the drilled hole, the knob on the screw rod is rotated through a wrench or manually, the screw rod is rotated, the rotating disc is rotated in the accommodating groove through the rotating shaft, the movable disc is screwedly connected with the screw rod, the movable disc is slid in the accommodating groove, the guiding block is slid in the guiding groove, when the rotating disc is rotated, the limiting groove inner wall extrudes the limiting block, the limiting block is slid in the limiting groove, the three movable blocks are relatively slid or deviated in the through hole groove, the three cone bodies A are relatively moved or deviated, until the cone body A is moved to the appropriate position.

[0019] 3. The utility model discloses a reinforcing assembly, the three cone bodies A are relatively moved or deviated, the reinforcing block is slid in the reinforcing groove, the reinforcing block is of an isosceles trapezoidal structure, which can not only assist the movement of the cone body A, but also improve the stability of the movement of the cone body A.

[0020] 4. The utility model discloses a spring block is set, make the guide block slide in the guide groove, will make spring block tension or shrink under force, utilize the relative force that spring block force produces, can make the movable disc with screw rod threaded connection more stable, thereby can avoid the drilling process of horizontal directional drilling drill bit, will due to factors such as vibration, lead to movable disc and screw rod threaded connection loose, make the wobbly of tooth wheel body A position, thereby influence the use effect of horizontal directional drilling drill bit. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is whole structure schematic view of the utility model;

[0022] Figure 2 It is whole structure split schematic view of the utility model;

[0023] Figure 3 It is whole structure cross -sectional view of the utility model;

[0024] Figure 4 It is another state cross -sectional view of the utility model's whole structure;

[0025] Figure 5 It is drill bit connecting square cross -sectional view of the utility model;

[0026] Figure 6 It is partial structure split schematic view of the utility model;

[0027] Figure 7 It is spring block structure schematic view of the utility model;

[0028] Figure 8 It is the utility model's Figure 4 Amplification schematic view of the utility model's middle A place.

[0029] In the drawing:

[0030] 1, fixed cone;2, center cone;3, high pressure water outlet;4, expansion assembly;5, reinforcing assembly;6, guide assembly;7, spring block;

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

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

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

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

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

[0036] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with 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 the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.

[0037] In order to improve the construction efficiency of rock stratum and pebble stratum and reduce the construction cost, the utility model provides a combined horizontal directional drilling bit, which comprises a fixed roller 1, a center roller 2 and a high-pressure water outlet 3. Figures 1 to 8 The fixed roller 1 comprises a drill bit connecting side 101, a roller body A 102, a roller power head 103 and a roller connecting port 104. Three roller bodies A 102 are arranged in a ring array on the drill bit connecting side 101 through an expansion and contraction assembly 4. The roller power head 103 is connected with the roller body A 102 through a driving mechanism. The roller connecting port 104 is fixedly arranged on the drill bit connecting side 101. The center roller 2 comprises a roller body B 201, a spiral drilling head 202 and a spiral connecting port 203. The spiral drilling head 202 is arranged on the roller body B 201. The spiral connecting port 203 is fixedly arranged on the roller body B 201 and is threadedly connected with the roller connecting port 104.

[0038] A method for soil drilling construction by a combined horizontal directional drilling bit comprises the following steps: positioning the horizontal directional drilling rig at a to-be-constructed part according to the construction part after measurement and positioning; installing the horizontal directional drilling bit on a spiral drill rod and connecting the high-pressure water pipe of the horizontal directional drilling bit with the water pump of the drilling rig; sending the drilling end of the horizontal directional drilling bit to the surface of the to-be-drilled soil layer by the power device of the drilling rig; in the process of drilling, the horizontal directional drilling bit breaks and strips the rock stratum in the soil body and washes the silt out of the drill rod by high-pressure water

[0039] The utility model discloses a fixed cone 1, center cone 2 and high pressure water outlet 3 are set up, install fixed cone 1 on the spiral drill rod through cone connecting port 104, install center cone 2 on fixed cone 1, then, connect horizontal directional drilling drill head high pressure water pipe with rig water pump, check whether the directional drilling drill head high pressure water outlet 3 is unobstructed, then, through rig power device, the drilling end of horizontal directional drilling drill head is sent to the surface of the soil layer to be drilled.

[0040] In order to avoid replacing the horizontal directional drilling drill head of different diameters for different requirements of drilling size, the expansion and contraction assembly 4 and the guide assembly 6 are provided to reduce the use cost and improve the applicability. Specifically, the expansion and contraction assembly 4 includes a receiving groove 401, a through-hole groove 402, a rotating disc 403, a limiting groove 404, a movable block 405, a limiting block 406, a movable disc 407, and a screw rod 408. The receiving groove 401 is formed on the drill head connecting side 101. Three through-hole grooves 402 are annularly arranged in the receiving groove 401. The rotating disc 403 is rotatably arranged in the receiving groove 401 through a rotating shaft. Three limiting grooves 404 are formed on the rotating disc 403. The movable block 405 is slidably arranged in the through-hole groove 402 and fixedly connected with the cone body A 102. The cone body A 102 is connected with the drill head connecting side 101 through the reinforcing assembly 5. The limiting block 406 is movably arranged in the limiting groove 404 and fixedly connected with the movable block 405. The limiting groove 404 is an arc-shaped inclined structure. The distance between the opposite ends of the three limiting grooves 404 is smaller than the distance between the ends away from each other, so as to facilitate the movement of the three movable blocks 405 by extruding the limiting block 406 on the inner wall of the limiting groove 404. 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 disc 403, so as to avoid the contact between the movable block 405 and the rotating disc 403, which affects the movement range of the cone body A 102. The movable disc 407 is slidably arranged in the receiving groove 401 through the guide assembly 6. The screw rod 408 is screwed on the movable disc 407 and fixedly connected with the rotating disc 403.

[0041] The guide assembly 6 includes a guide groove 601 and a guide block 602. Three guide grooves 601 are annularly arranged in the receiving 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 with the movable disc 407.

[0042] The utility model discloses a set up expansion and contraction subassembly 4 and guide assembly 6, according to the size of the ground hole that needs to drill, through spanner or manual rotation knob block on screw rod 408, make screw rod 408 rotate, make rotating disc 403 rotate in containing groove 401 through pivot, make movable disc 407 and screw rod 408 screw connection, make movable disc 407 slide in containing groove 401, make guide block 602 slide in guide groove 601, and when rotating disc 403 rotates, will make the inner wall of limiting groove 404 extrude limiting block 406, make limiting block 406 slide in limiting groove 404, make three movable blocks 405 slide in through -hole groove 402 relatively or away from each other, make three cone body A102 move relatively or away from each other, until cone body A102 moves to the appropriate position.

[0043] In order to improve the stability of the movement of cone body A102, the present application provides a reinforcing assembly 5, specifically, the reinforcing assembly 5 comprises a reinforcing groove 501 and a reinforcing block 502; the reinforcing groove 501 is annularly arranged on the drill bit connecting side 101; the reinforcing block 502 is slidably arranged in the reinforcing groove 501, and the end of the reinforcing block 502 penetrates through the reinforcing groove 501 and is fixedly connected with the cone body A102; the reinforcing block 502 is in the shape of an isosceles trapezoid with the upper part being smaller and the lower part being larger.

[0044] The utility model discloses a set up reinforcing assembly 5, make three cone body A102 move relatively or away from each other, can make reinforcing block 502 slide in reinforcing groove 501, because reinforcing block 502 is in the shape of an isosceles trapezoid with the upper part being smaller and the lower part being larger, not only can assist the movement of cone body A102, but also can improve the stability of the movement of cone body A102.

[0045] In order to avoid the loosening of the screw connection between the movable disc 407 and the screw rod 408 during the drilling process of the horizontal directional drilling drill bit due to vibration and other factors, the present application provides a spring block 7 to improve the stability of the screw connection between the movable disc 407 and the screw rod 408, specifically, the spring block 7 is further included; the two ends of the spring block 7 are fixedly connected with the inner wall of the guide groove 601 and the guide block 602 respectively; in order to avoid the shaking of the position of the spring block 7, a telescopic plate can be arranged in the guide groove 601, so that the spring block 7 is 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 in the shape of an arc, and the longitudinal section of the spring block 7 is in the shape of a wave, so as to conveniently provide the spring block 7 with a certain amount of movement, so that the spring block 7 can be stretched or contracted; when the limiting block 406 is in contact with the inner wall of the side away from the three limiting grooves 404, the reinforcing block 502 is still in the reinforcing groove 501, and the guide block 602 is not in contact with the inner wall of the guide groove 601.

[0046] The utility model discloses a spring block 7 is set, make the guiding block 602 slide in the guide groove 601, will make spring block 7 force stretch or contract, utilize the relative force that spring block 7 force produces, can make movable disc 407 and screw rod 408 threaded connection more stable, thereby can avoid the drilling process of horizontal directional drilling bit, will due to factors such as vibration, lead movable disc 407 and screw rod 408 threaded connection loose, make the position of cone body A102 sway, thereby influence the use effect of horizontal directional drilling bit.

[0047] The utility model discloses a working principle: when using, first, according to the size of the hole that needs to drill, through spanner or manual rotation knob block on screw rod 408, make screw rod 408 rotate, make rotating disc 403 rotate through the shaft in accommodating groove 401, make movable disc 407 and screw rod 408 threaded connection, make movable disc 407 slide in accommodating groove 401, make guiding block 602 slide in guide groove 601, make spring block 7 force stretch or contract, and rotating disc 403 rotate, will make the inner wall of limiting groove 404 extrude limiting block 406, make limiting block 406 slide in limiting groove 404, make three movable blocks 405 in through -hole groove 402 relative or away from each other slide, make three cone body A102 relative or away from each other move, make reinforcing block 502 slide in reinforcing groove 501, until cone body A102 moves to the appropriate position, at this time, do not rotate screw rod 408 any more, and through the relative force that spring block 7 force produces, can make movable disc 407 and screw rod 408 threaded connection more stable, then, install fixed cone 1 on the auger stem through cone connecting port 104, central cone 2 is installed on fixed cone 1, then, connect horizontal directional drilling bit high pressure water pipe with drilling machine water pump, check whether directional drilling bit high pressure water outlet 3 is unobstructed, then, through the power device of drilling machine, the drilling end of horizontal directional drilling bit is sent to the surface of the earth layer to be drilled, in the process of drilling, horizontal directional drilling bit will break and strip the rock stratum in the earth body, and the broken rock soil is discharged through high pressure water.

[0048] Finally, it should be pointed out that: first, in the description of the present application, it should be pointed out that, unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0049] Secondly: the utility model discloses an embodiment of the drawings, only relate to the structure involved in the embodiment of the present disclosure, other structures can refer to the usual design, under the condition of no conflict, the same embodiment and different embodiments of the utility model can be combined with each other;

[0050] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A modular horizontal directional drill bit, comprising: The utility model relates to a high-pressure water outlet (3) including fixed cone (1), center cone (2) and, the center cone (2) is installed on fixed cone (1), a plurality of high-pressure water outlets (3) are arranged in ring array on fixed cone (1), fixed cone (1) includes drill bit connecting side (101), cone body A (102), cone power head (103) and cone connecting port (104), a plurality of cone body A (102) are arranged in ring array on drill bit connecting side (101) through expansion and contraction subassembly (4), cone power head (103) is connected with cone body A (102) through drive mechanism, cone connecting port (104) is fixed on drill bit connecting side (101), center cone (2) includes cone body B (201), spiral drilling head (202) and spiral connecting port (203), spiral drilling head (202) is arranged on cone body B (201), spiral connecting port (203) is fixed on cone body B (201) and is connected with cone connecting port (104) threadedly.

2. A modular horizontal directional drilling bit according to claim 1, wherein, Expansion and contraction subassembly (4) includes containing groove (401), through hole groove (402), rotating disc (403), limiting groove (404), movable block (405) and limiting block (406), drill bit connecting side (101) is set up with containing groove (401), a plurality of through hole grooves (402) are set up in ring array in containing groove (401), rotating disc (403) is rotatably arranged in containing groove (401) through pivot, a plurality of limiting grooves (404) are set up on rotating disc (403), movable block (405) is slidably arranged in through hole groove (402) and is fixedly connected with cone body A (102), and cone body A (102) is connected with drill bit connecting side (101) through reinforcing subassembly (5), limiting block (406) is slidably arranged in limiting groove (404) and is fixedly connected with movable block (405).

3. A modular horizontal directional drilling bit according to claim 2, wherein, Limiting groove (404) is arc inclined structure, and the distance size between the opposite ends of a plurality of limiting grooves (404) is less than the distance size between the ends of a plurality of limiting grooves (404) away from each other.

4. The combination horizontal directional drill bit of claim 2, wherein, Movable block (405) is U-shaped structure, and the inner wall length size of movable block (405) is greater than the radius size of rotating disc (403).

5. The combination horizontal directional drill bit of claim 2, wherein, Expansion and contraction subassembly (4) further includes movable disc (407) and screw rod (408), movable disc (407) is slidably arranged in containing groove (401) through guide assembly (6), screw rod (408) is screwed on movable disc (407) and is fixedly connected with rotating disc (403).

6. A modular horizontal directional drilling bit according to claim 2, wherein, Reinforcing subassembly (5) includes reinforcing groove (501) and reinforcing block (502), drill bit connecting side (101) is set up with reinforcing groove (501) in ring array, reinforcing block (502) is slidably arranged in reinforcing groove (501), and the end of reinforcing block (502) passes through reinforcing groove (501) and is fixedly connected with cone body A (102).

7. A modular horizontal directional drilling bit according to claim 6, wherein, Reinforcing block (502) is isosceles trapezoidal structure with upper small and lower large.

8. A modular horizontal directional drilling bit according to claim 5, wherein, The guiding assembly (6) comprises a guiding groove (601) and a guiding block (602); a plurality of guiding grooves (601) are arranged in an annular array in the containing groove (401); the guiding block (602) is slidably arranged in the guiding groove (601), and the end of the guiding block (602) is fixedly connected with the movable disc (407) through the guiding groove (601).

9. A modular horizontal directional drilling bit according to claim 8, wherein, The spring block (7) is further included; the two ends of the spring block (7) are fixedly connected with the inner wall of the guiding groove (601) and the guiding block (602) respectively.

10. A modular horizontal directional drilling bit according to claim 9, wherein, The spring block (7) is in an arc structure, and the longitudinal section of the spring block (7) is in a wave structure.

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