CN212027665U - Drilling and directional deviation-rectifying drill bit suitable for soft soil stratum - Google Patents
Drilling and directional deviation-rectifying drill bit suitable for soft soil stratum Download PDFInfo
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- CN212027665U CN212027665U CN202020217161.7U CN202020217161U CN212027665U CN 212027665 U CN212027665 U CN 212027665U CN 202020217161 U CN202020217161 U CN 202020217161U CN 212027665 U CN212027665 U CN 212027665U
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Abstract
The utility model relates to a drill bit creeps into and directional rectifying suitable for weak soil stratum comprises drill bit barrel, drill bit panel, welding-on carbide and efflux pipe, the drill bit barrel forms oblique cylinder with the welding of drill bit panel, is equipped with the cutting water hole on the drill bit panel, installs the efflux pipe in the oblique cylinder, the peripheral welding-on carbide of drill bit panel. The jet pipe is connected with a high-pressure water source, the high-pressure jet is used for cutting and crushing soil, and the hard alloy embedded and welded on the periphery of the drill bit panel keeps the hole wall regular through the drilling and the swinging or rotation of the directional deviation-rectifying drill bit. The utility model provides a creep into and directional drill bit of rectifying is applicable to the drilling pore-forming and the directional device of rectifying of adopting the horizontal drilling of all-round high pressure injection slip casting method (MJS worker method), makes drilling can keep the work of set angle.
Description
Technical Field
The utility model relates to an adopt drilling equipment of all-round high pressure injection slip casting method (MJS worker method), in particular to adopt the drilling and the directional drill bit of rectifying of the horizontal drilling of an all-round high pressure injection slip casting method (MJS worker method).
Background
When the horizontal drilling hole is constructed by the omnibearing high-pressure jet grouting method, on one hand, the drill rod can generate downward deflection under the action of gravity; on the other hand, when the drill bit drills in a soft and hard uneven stratum, deflection in the horizontal or vertical direction can be generated, and construction quality is affected. Therefore, it is necessary to design a drill bit suitable for drilling and directional deviation correction of soft soil stratum.
Disclosure of Invention
To the problem of the drilling incline that exists in the horizontal drilling construction of above-mentioned all-round high pressure injection slip casting method (MJS worker method), the utility model provides a creep into and directional deviation correcting drill bit suitable for soft soil stratum.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a creep into and directional drill bit of rectifying suitable for weak soil stratum comprises drill bit barrel, drill bit panel, welding carbide and efflux pipe, the oblique cylinder of drill bit barrel and drill bit panel welding formation is equipped with the cutting water hole on the drill bit panel, installs the efflux pipe in the oblique cylinder, the peripheral welding carbide of drill bit panel.
Furthermore, the jet pipe is connected with a high-pressure water source, the high-pressure jet is used for cutting and crushing soil, and the hard alloy embedded and welded on the periphery of the drill bit panel keeps the hole wall regular through the drilling and the swinging or rotation of the directional deviation-rectifying drill bit.
Furthermore, the drilling direction, the swing angle and the drilling speed of the inclined cylinder at the front end of the drilling and directional deviation correcting drill bit are adjustable.
Further, when the detection shows that the drill hole is deviated, the drilling and directional deviation rectifying drill bit rectifies the deviation by adjusting the drilling direction and the swinging angle of the inclined cylinder at the front end and adjusting the drilling speed of the drill bit, so that the drill bit keeps the posture and drills along the set direction.
The utility model has the advantages that:
the utility model provides a drilling and directional deviation rectifying drill bit, which comprises a drill bit cylinder, a drill bit panel, a welding hard alloy, a jet pipe and the like; the drill bit cylinder and the drill bit panel are welded to form an inclined cylinder (called as a duckbill tongue), the drill bit panel is provided with a cutting water hole, a jet pipe is installed in the drill bit, and hard alloy is embedded and welded on the periphery of the jet pipe; during MJS horizontal drilling construction, a jet pipe arranged in a drill bit is used for jetting high-pressure water flow, the broken soil body is cut through cutting, regular drilling is formed through swinging or rotating of the drill bit, and when the deviation of the drilling is detected, the deviation correcting effect is achieved by adjusting the direction of a duckbill tongue of the drill bit, the swinging angle of the drill bit and the drilling speed.
The utility model provides a creep into and directional drill bit of rectifying is applicable to the drilling pore-forming and the directional device of rectifying of adopting the horizontal drilling of all-round high pressure injection slip casting method (MJS worker method), makes drilling can keep the work of set angle.
Drawings
FIG. 1 is a front view of a directional deviation-correcting drill bit structure suitable for soft soil strata in the present embodiment;
FIG. 2 is a top view of the directional deviation-correcting drill bit structure suitable for soft soil formation in this embodiment;
FIG. 3 is a side view of the directional deviation-correcting drill bit structure for soft soil formation in this embodiment;
FIG. 4 is a stress analysis diagram of the directional deviation-rectifying drill bit suitable for soft soil strata according to the embodiment of the present invention;
description of reference numerals: 1-drill bit cylinder; 2-bit face plate; 3-jet pipe; 4-cutting water holes; 5-hard alloy; n, axial thrust of a drilling machine; f is the force of the soil body acting on the drill bit panel; the Fx-soil body acts on the drill bit panel and has component force along the X direction; fy-soil body acts on the drill bit panel and has component force along the Y direction.
Detailed Description
The following embodiments of the present invention will be described in further detail with reference to the accompanying drawings, but the present invention is not limited to the embodiments, and all similar structures and similar variations thereof adopted by the present invention should be included in the protection scope of the present invention.
As shown in fig. 1, 2 and 3, the drill bit suitable for drilling and directional deviation correction of soft soil stratum consists of a drill bit cylinder 1, a drill bit panel 2, a jet pipe 3, a welding hard alloy 5 and the like. The drill bit cylinder 1 and the drill bit panel 2 are welded to form an inclined cylinder which is called as a duckbill tongue, a cutting water hole 4 is arranged on the drill bit panel, hard alloy 5 is embedded and welded on the periphery of the drill bit panel 2, and a jet pipe 3 is arranged in the drill bit.
As shown in figures 1 and 4, the drilling and directional deviation rectifying drill bit utilizes high-pressure cement sprayed from a jet pipe 3 to penetrate through a cutting water hole 4 to crush soil, forms a drill hole through the swinging or rotation of the drill bit under the action of axial thrust N of a drilling machine, and utilizes cemented carbide 5 embedded on the periphery of a panel to form a regular hole wall.
As shown in FIG. 4, the acting force F of the soil body on the drilling and directional deviation-correcting drill bit panel can be decomposed into a component force Fx along the X direction and a component force Fy along the Y direction, the drilling and directional deviation-correcting drill bit forms a trend of moving towards the direction of the duckbilled tongue under the action of the Fy, and the drilling axis is gradually changed towards the direction of the duckbilled tongue by adjusting the swing angle of the drill bit.
As shown in fig. 1 and 4, when the deviation of the drilled hole is detected, the direction of the duckbill tongue of the drilling and directional deviation-correcting drill bit is adjusted to be consistent with the deviation-correcting direction (namely, opposite to the deviation direction), so that the drill bit performs directional deviation correction under the action of Fy force, and the drill bit drills along the set direction to form the horizontal drilled hole meeting the requirement.
Claims (3)
1. The utility model provides a creep into and directional drill bit of rectifying suitable for soft soil stratum comprises drill bit barrel, drill bit panel, welding-on carbide and efflux pipe, its characterized in that: the drill bit cylinder and the drill bit panel are welded to form an inclined cylinder, a cutting water hole is formed in the drill bit panel, a jet pipe is installed in the inclined cylinder, and hard alloy is embedded and welded on the periphery of the drill bit panel.
2. The drilling and directional deviation rectifying drill bit suitable for soft soil strata according to claim 1, wherein: the jet pipe is connected with a high-pressure water source, the high-pressure jet flows out of the broken soil body through the cutting water hole, and the hard alloy embedded and welded on the periphery of the drill bit panel keeps the hole wall regular through the drilling and the swinging or rotation of the directional deviation rectifying drill bit.
3. The drilling and directional deviation rectifying drill bit suitable for soft soil strata according to claim 1, wherein: the drilling direction, the swing angle and the drilling speed of the inclined cylinder at the front end of the drilling and directional deviation rectifying drill bit are adjustable.
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CN202020217161.7U CN212027665U (en) | 2020-02-27 | 2020-02-27 | Drilling and directional deviation-rectifying drill bit suitable for soft soil stratum |
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CN202020217161.7U CN212027665U (en) | 2020-02-27 | 2020-02-27 | Drilling and directional deviation-rectifying drill bit suitable for soft soil stratum |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116084839A (en) * | 2023-04-11 | 2023-05-09 | 中南大学 | Space attitude self-adaptive intelligent targeted drilling tool system under complex geological environment |
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2020
- 2020-02-27 CN CN202020217161.7U patent/CN212027665U/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116084839A (en) * | 2023-04-11 | 2023-05-09 | 中南大学 | Space attitude self-adaptive intelligent targeted drilling tool system under complex geological environment |
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