A guide drill rod of a horizontal directional drilling machine and a construction method thereof

Abstract

The invention discloses a guide drill rod of a horizontal directional drilling rig and a construction method thereof, which belongs to the technical field of horizontal directional drilling rigs and comprises a drill bit and a mounting ring and a sewage suction pipe arranged at both ends of the drill bit; a through groove is provided on the side wall of the drill bit, and an arc plate is detachably installed on the outer wall of the drill bit in an annular array, a hole expansion knife is symmetrically protruded on the outer wall of the arc plate, a spray disc is embedded in the through groove, the sewage suction pipe is fitted and plugged into the drill bit, and telescopic holes are symmetrically provided on the outer wall of the sewage suction pipe, a rotating pipe is protruded on the side wall of the sewage suction pipe, wherein the sewage suction pipe is provided with sewage suction holes in an annular array, a positioning block clamped with the drill bit is elastically inserted in the telescopic hole, and the two ends of the connecting pipe are respectively connected with the spray disc and the water inlet pipe, the guide drill rod of the horizontal directional drilling rig and the construction method thereof are convenient for expanding the hole during the drilling process, avoiding the influence of the drilling efficiency on the replacement of the hole expansion drill bit, and facilitating the discharge of muddy water generated in the drilling process of the drill bit.

Description

Technical Field

[0001] The invention belongs to the technical field of horizontal directional drilling machines, and in particular relates to a guide drill rod of a horizontal directional drilling machine and a construction method thereof. Background Art

[0002] The kilometer-long directional technology utilizes the directional correction function of the drilling rig to timely control and process the drill bit through precise measurement and automatic analysis of the measurement system, thereby controlling the drilling trajectory. It is widely used due to its advantages such as long single-hole drilling distance, large detection range, and low labor intensity. According to the technical investigation report, there is a certain angle between the elbow and the drill pipe instead of a straight line, which is used to change direction.

[0003] However, when the drill pipe is directional drilling, since the drilling fluid is a viscous liquid mixed with water and bentonite, a small amount of solid soil blocks will be contained in the drilling fluid. These solid soil blocks are difficult to handle and will hinder the installation of the pipeline when the pipeline is inserted into the borehole. When the directional drilling rig is expanding the hole, it is necessary to replace the small-diameter drill bit and then replace it with another large-diameter drill bit, which is troublesome to replace. Summary of the invention

[0004] The object of the present invention is to provide a guide drill rod of a horizontal directional drilling rig and a construction method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a guide drill rod of a horizontal directional drilling rig and a construction method thereof, comprising a drill bit and a mounting ring and a sewage suction pipe arranged at both ends of the drill bit, the side wall of the drill bit is provided with a through groove, and the outer wall of the drill bit is detachably provided with an arc plate in an annular array, the outer wall of the above-mentioned arc plate is symmetrically protruding with a reaming knife, a spray disc is embedded in the above-mentioned through groove, the above-mentioned sewage suction pipe is fitted and inserted in the drill bit, and the outer wall of the sewage suction pipe is symmetrically provided with telescopic holes, the side wall of the sewage suction pipe is protruding with a rotating tube, wherein the sewage suction pipe is provided with sewage suction holes in an annular array, and a positioning block that is elastically inserted in the above-mentioned telescopic hole is clamped with the drill bit.

[0006] Furthermore, a suction pipe is embedded in the rotating tube, and a water inlet pipe is fixed to the outer wall of the rotating tube. A connecting pipe is embedded in the suction pipe, and both ends of the connecting pipe are respectively connected to the spray plate and the water inlet pipe.

[0007] Furthermore, a spring is fixed to the bottom wall of the telescopic hole, a button is slidably inserted into the outer wall of the drill bit, a block protrudes from the bottom end of the button and is engaged with the drill bit, the bottom end of the positioning block is fixedly connected to the spring, and the top of the positioning block is in contact with the button.

[0008] Furthermore, the side wall of the drill bit is symmetrically provided with screw holes, the outer wall of the mounting ring is provided with drill bits protruding in a ring array, and the side wall of the mounting ring is symmetrically provided with screws threadedly connected to the screw holes.

[0009] Furthermore, the outer wall of the drill bit is provided with positioning grooves in a circular array, a sliding block in a T-shaped structure is protruded at the center of the inner wall of the arc plate, and a positioning hole is provided at the center of the inner wall of the positioning groove.

[0010] Furthermore, the sliding block is inserted in the positioning groove, a bolt is threadedly inserted at the center of the outer wall of the arc-shaped plate, and the top end of the bolt is inserted in the positioning hole.

[0011] Furthermore, the rotating pipe drives the drill bit to rotate through the sewage suction pipe, the drill bit on the fixed mounting ring on the side wall of the drill bit drills a hole, the water inlet pipe sprays water from the spray plate through the connecting pipe, and the spray plate sprays water to moisten the soil in the drill hole.

[0012] Furthermore, the suction tube in the rotating tube absorbs water through the sewage suction hole on the sewage suction pipe, and when the drill bit is rotating to drill a hole, the reaming knife on the arc plate on the side wall of the drill bit reams the hole.

[0013] The technical effects and advantages of the guide drill rod and the construction method of the horizontal directional drilling machine are as follows: positioning grooves are provided in a circular array on the outer wall of the drill bit, and the sliders on the inner wall of the arc plate are inserted in the positioning grooves; the inner wall of the positioning groove is provided with positioning holes; the outer wall of the arc plate is symmetrically protruded with obliquely arranged reaming knives, and the arc plate is clamped with the positioning holes by bolts, so that the arc plate and the drill bit are kept fixed; the drill bit drives the arc plate to rotate synchronously during the rotation drilling process, and the reaming knives on the outer wall of the arc plate expand the drill hole during the rotation process, which is convenient for expanding the hole during the drilling process and avoids the influence of the drilling efficiency on the replacement of the reaming drill bit; the sewage suction pipe is inserted in the drill bit, and the water inlet pipe and the connecting pipe arranged in the suction pipe flush the soil through the spray plate, and the sewage suction pipe pushes the positioning block to clamp the drill bit through the springs in the telescopic holes at both ends of the sewage suction pipe, so that the sewage suction pipe and the drill bit are kept fixed, and the mud and water in the drill hole are sucked out through the sewage suction holes on the sewage suction pipe during the drilling process, which is convenient for discharging the mud and water generated during the drilling process of the drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0015] Figure 2 For the present invention Figure 1 An enlarged schematic diagram of the embodiment at A in the middle;

[0016] Figure 3 This is a schematic diagram of the mounting ring structure of an embodiment of the present invention;

[0017] Figure 4 A schematic diagram of the drill bit structure according to an embodiment of the present invention;

[0018] Figure 5 Schematic diagram of the curved plate structure according to an embodiment of the present invention.

[0019] In the figure: 1, drill bit; 2, connecting pipe; 3, suction pipe; 4, water inlet pipe; 5, rotating pipe; 6, sewage suction hole; 7, sewage suction pipe; 8, clamping block; 9, button; 10, positioning block; 11, telescopic hole; 12, spring; 13, screw; 14, positioning groove; 15, mounting ring; 16, drill cutter; 17, through groove; 18, spray disc; 19, screw hole; 20, bolt; 21, positioning hole; 22, reaming knife; 24, slider; 25, curved plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Please refer to Figure 1-Figure 5 The guide drill rod of a horizontal directional drilling machine and the construction method thereof shown include a drill bit 1 and mounting rings 15 and a sewage suction pipe 7 arranged at both ends of the drill bit 1.

[0022] Reference Figure 1-Figure 3The outer wall of the drill bit 1 is provided with positioning grooves 14 in a circular array, the slider 24 on the inner wall of the arc plate 25 is inserted into the positioning groove 14, the inner wall of the positioning groove 14 is provided with positioning holes 21, the outer wall of the arc plate 25 is symmetrically protruding with inclined reaming knives 22, and the arc plate 25 is clamped with the positioning holes 21 through bolts 20, so that the arc plate 25 and the drill bit 1 are kept fixed, and the drill bit 1 drives the arc plate 25 to rotate synchronously during the process of rotating drilling, and the reaming knives 22 on the outer wall of the arc plate 25 expand the drill hole during the rotation process, It is convenient to expand the hole during the drilling process, avoiding the influence of the drilling efficiency on the replacement of the expansion drill bit 1, the side wall of the drill bit 1 is provided with a through groove 17, and the outer wall of the drill bit 1 is detachably installed with an arc plate 25 in a ring array, and the outer wall of the arc plate 25 is symmetrically protruding with an expansion knife 22, and a spray disc 18 is embedded in the through groove 17. The sewage suction pipe 7 is inserted into the drill bit 1, and the outer wall of the sewage suction pipe 7 is symmetrically provided with a telescopic hole 11, and a suction pipe 3 is embedded in the rotating pipe 5, and a water inlet pipe 4 is fixed on the outer wall of the rotating pipe 5, and a connecting pipe 2 is embedded in the suction pipe 3, and the connecting pipe The two ends of the drill head 1 are connected to the spray plate 18 and the water inlet pipe 4 respectively, the bottom wall of the telescopic hole 11 is fixed with a spring 12, the outer wall of the drill head 1 is slidably plugged with a button 9, the bottom end of the button 9 is protruding with a card block 8 that is engaged with the drill head 1, the bottom end of the positioning block 10 is fixedly connected with the spring 12, and the top of the positioning block 10 is in contact with the button 9, the side wall of the drill head 1 is symmetrically provided with screw holes 19, the outer wall of the mounting ring 15 is protruding with a drill cutter 16 in an annular array, and the side wall of the mounting ring 15 is symmetrically provided with screws 13 that are threadedly connected with the screw holes 19, and the suction pipe 3 is installed. A sewage suction pump is provided, and the sewage in the borehole is sucked out through the sewage suction pipe 7 and the sewage suction hole 6 by the sewage suction pump. A water pump is installed on the water inlet pipe 4. The rotating pipe 5 drives the drill bit 1 to rotate through the sewage suction pipe 7. The drill cutter 16 on the fixed mounting ring 15 on the side wall of the drill bit 1 drills a hole. The water inlet pipe 4 sprays water from the spray plate through the connecting pipe 2. The spray plate 18 sprays water to moisten the soil in the borehole. The suction pipe 3 in the rotating pipe 5 absorbs water through the sewage suction hole 6 on the sewage suction pipe 7. When the drill bit 1 rotates to drill a hole, the reaming cutter 22 on the arc plate 25 on the side wall of the drill bit 1 reams the hole.

[0023] Reference Figure 4 and Figure 5, by fitting the suction pipe 7 in the drill bit 1, and the water inlet pipe 4 and the connecting pipe 2 arranged in the suction pipe 3 flush the soil through the spray plate 18, the suction pipe 7 pushes the positioning block 10 to engage with the drill bit 1 through the springs 12 in the telescopic holes 11 at both ends of the suction pipe 7, so that the suction pipe 7 and the drill bit 1 remain fixed, and in the process of drilling, the muddy water in the borehole is sucked out through the suction hole 6 on the suction pipe 7, which is convenient for discharging the muddy water generated during the drilling process of the drill bit 1, and the side wall of the suction pipe 7 is protruding with a rotating pipe 5, wherein the suction pipe 7 is provided with a rotating pipe 5, and the suction pipe 7 is provided with a rotating pipe 5. The sewage pipe 7 is provided with sewage suction holes 6 in a circular array, a positioning block 10 that is clamped with the drill bit 1 is elastically inserted in the telescopic hole 11, and a positioning groove 14 is provided on the outer wall of the drill bit 1 in a circular array. A slider 24 with a T-shaped structure is protruded at the center of the inner wall of the arc plate 25, and a positioning hole 21 is provided at the center of the inner wall of the positioning groove 14. The slider 24 is inserted into the positioning groove 14, and a bolt 20 is threadedly inserted at the center of the outer wall of the arc plate 25, and the top of the bolt 20 is clamped in the positioning hole 21.

[0024] The guide drill rod of the horizontal directional drilling rig and the construction method thereof, when in use, the rotating tube 5 drives the drill bit 1 to rotate through the sewage suction pipe 7, the drill cutter 16 on the fixed mounting ring 15 on the side wall of the drill bit 1 drills a hole, the water inlet pipe 4 sprays water from the spray plate through the connecting pipe 2, the spray plate 18 sprays water to moisten the soil in the drill hole, the suction pipe 3 in the rotating tube 5 absorbs water through the sewage suction hole 6 on the sewage suction pipe 7, and when the drill bit 1 rotates to drill a hole, the reaming cutter 22 on the arc plate 25 on the side wall of the drill bit 1 reams the drill hole.

[0025] The above description is only a preferred specific implementation manner of the invention, but the protection scope of the invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the invention according to the technical scheme and inventive concept of the invention, which should be covered by the protection scope of the invention.

Claims

1. A guide drill rod for a horizontal directional drilling machine, comprising a drill bit (1) and mounting rings (15) and a sewage suction pipe (7) arranged at both ends of the drill bit (1), characterized in that: The side wall of the drill bit (1) is provided with a through groove (17), and the outer wall of the drill bit (1) is detachably provided with an arc plate (25) in a ring array, and the outer wall of the arc plate (25) is symmetrically provided with a hole reamer (22), and a spray disc (18) is embedded in the through groove (17), and the sewage suction pipe (7) is inserted into the drill bit (1), and the outer wall of the sewage suction pipe (7) is symmetrically provided with telescopic holes (11), and the side wall of the sewage suction pipe (7) is protrudingly provided with a rotating pipe (5), wherein the sewage suction pipe (7) A dirt suction hole (6) is provided in a circular array, a positioning block (10) which is engaged with the drill bit (1) is elastically inserted in the telescopic hole (11); a spring (12) is fixed to the bottom wall of the telescopic hole (11), a button (9) is slidably inserted into the outer wall of the drill bit (1), a block (8) which is engaged with the drill bit (1) is protruding from the bottom end of the button (9), the bottom end of the positioning block (10) is fixedly connected to the spring (12), and the top end of the positioning block (10) is in contact with the button (9); The outer wall of the drill bit (1) is provided with positioning grooves (14) in a circular array, a T-shaped sliding block (24) is protruding from the center of the inner wall of the arc plate (25), and a positioning hole (21) is provided at the center of the inner wall of the positioning groove (14).

2. The guide drill rod of a horizontal directional drilling rig according to claim 1, characterized in that: A suction pipe (3) is embedded in the rotating tube (5), and a water inlet pipe (4) is fixed to the outer wall of the rotating tube (5). A connecting pipe (2) is embedded in the suction pipe (3), and the two ends of the connecting pipe (2) are respectively connected to the spray plate (18) and the water inlet pipe (4).

3. The guide drill rod of a horizontal directional drilling rig according to claim 1, characterized in that: The side wall of the drill bit (1) is symmetrically provided with screw holes (19), the outer wall of the mounting ring (15) is provided with drill bits (16) protruding in a ring array, and the side wall of the mounting ring (15) is symmetrically provided with screws (13) threadedly connected to the screw holes (19).

4. The guide drill rod of a horizontal directional drilling rig according to claim 1, characterized in that: The sliding block (24) is inserted in the positioning groove (14), a bolt (20) is threadedly inserted at the center of the outer wall of the arc plate (25), and the top end of the bolt (20) is inserted in the positioning hole (21).

5. A method for constructing a guide drill rod of a horizontal directional drilling rig, which is used for the guide drill rod of a horizontal directional drilling rig according to claim 2, characterized in that: The rotating pipe (5) drives the drill bit (1) to rotate through the sewage suction pipe (7), and the drill bit (16) on the fixed mounting ring (15) on the side wall of the drill bit (1) drills a hole. The water inlet pipe (4) causes water to be sprayed out from the spray plate through the connecting pipe (2), and the spray plate (18) sprays water to moisten the soil in the drilled hole.

6. The method for constructing a guide drill rod of a horizontal directional drilling machine according to claim 5, characterized in that: The suction pipe (3) in the rotating tube (5) absorbs water through the sewage suction hole (6) on the sewage suction pipe (7), and when the drill bit (1) rotates to drill a hole, the reaming knife (22) on the arc plate (25) on the side wall of the drill bit (1) reams the drill hole.

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