CN213627431U - Horizontal directional drilling tool - Google Patents
Horizontal directional drilling tool Download PDFInfo
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- CN213627431U CN213627431U CN202022270464.8U CN202022270464U CN213627431U CN 213627431 U CN213627431 U CN 213627431U CN 202022270464 U CN202022270464 U CN 202022270464U CN 213627431 U CN213627431 U CN 213627431U
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- drilling tool
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- drill bit
- hole drilling
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Abstract
The utility model provides a directional drilling tool of level, the drill bit end and the tail end of dive hole drilling tool coaxial suit respectively are fixed with the pilot bit, the pilot bit includes sleeve and carbide tooth, telescopic internal diameter and the external diameter phase-match of dive hole drilling tool, the sleeve is fixed with the carbide tooth on the head end wall towards the dive hole drilling tool, many slag discharge channel have been laid along the axis to telescopic outer wall, and this device is through reforming transform the dive hole drilling tool, and the cost is reduced has improved the efficiency of construction, utilizes the efficiency of dive hole drilling tool broken rock in the work progress, and the cooperation pilot bit accomplishes the construction in the horizontal hole, guarantees that the work at horizontal drilling is smooth and easy.
Description
Technical Field
The utility model relates to a directional drilling tool of level.
Background
At present, municipal pipeline construction is carried out, a roller bit is used for multiple purposes, but the roller bit is high in overall manufacturing cost, meanwhile, non-excavation holes with the hole diameter being more than 300mm are formed, the price of a roller bit used on a set of drilling tool is higher, and when rock stratum hardness exceeds 200MPa, the rock is very serious in abrasion to the drilling tool.
When the down-the-hole drilling tool is used for constructing a horizontal hole, the down-the-hole drilling tool drives a piston hammering drill bit in the drilling tool by utilizing high-pressure air to crush rocks, and a pipeline hole in municipal engineering has silt and rock strata.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art not enough and provide one kind improve broken rock efficiency, can protect the drilling tool, improve the directional drilling tool of level of life of down-the-hole drill bit.
The utility model discloses a following embodiment realizes:
a horizontal directional drilling tool comprises a down-the-hole drilling tool, wherein a guide drill bit is coaxially sleeved and fixed at the drill bit end and the tail end of the down-the-hole drilling tool respectively, the guide drill bit comprises a sleeve and hard alloy teeth, the inner diameter of the sleeve is matched with the outer diameter of the down-the-hole drilling tool, the hard alloy teeth are fixed on the end wall of the sleeve facing the head end of the down-the-hole drilling tool, and a plurality of slag discharge channels are distributed on the outer wall of the sleeve along the axis. The guide drill bit separates the hidden hole drilling tool from the wall of the rock-soil hole during drilling, and the guide drill bit bears the supporting task with the wall of the rock-soil hole during drilling, so that the abrasion of the hidden hole drilling tool is reduced, only the guide drill bit needs to be replaced after the guide drill bit is abraded, the cost is greatly saved, the hard alloy teeth are arranged on the guide drill bit, the rock slag separating effect of the wall of the hole can be achieved, the drilling tool is guaranteed to drill smoothly in the horizontal direction, and the rock slag can smoothly pass through the drilling tool through the slag discharge channel processed on the guide drill bit, so that the rock slag is blown out from the bottom of the hole.
In this embodiment, the sleeve of the pilot bit is threadedly connected to the down-the-hole drill.
In the embodiment, the tail end of the sleeve is provided with a positioning ring, and the sleeve is axially positioned on the down-hole drilling tool through the positioning ring. By the mode, the connection mode of the existing down-the-hole drilling tool is not changed, and the down-the-hole drilling tool can be quickly modified into the drilling tool suitable for the horizontal hole.
In this embodiment, the plurality of slag discharge passages are symmetrically arranged with the central axis of the sleeve as the center.
In this embodiment, the cemented carbide teeth are uniformly arranged on the end wall of the sleeve.
In this embodiment, the welding has the wearing material layer on telescopic outer wall, can protect the pilot bit, improves the life of pilot bit.
By adopting the structure, the guide drill bit separates the hidden hole drilling tool from the wall of the rock-soil hole when drilling, and the guide drill bit bears the task of contacting with the wall of the rock-soil hole in the drilling process, so that the abrasion of the hidden hole drilling tool is reduced, only the guide drill bit needs to be replaced after the guide drill bit is abraded, the cost is greatly saved, the hard alloy teeth are arranged on the guide drill bit, the function of separating rock slag on the wall of the hole can be achieved, the drilling tool can be ensured to smoothly drill in the horizontal direction, the slag discharge channel processed on the guide drill bit can enable the rock slag to smoothly pass through the drilling tool, the rock slag is blown out from the bottom of the hole, the wear-resistant material layer is welded on the outer wall of the sleeve, the guide drill bit can be protected.
To sum up, this device is through reforming transform the down-the-hole drilling tool, and the efficiency that utilizes the down-the-hole drilling tool broken rock in the work progress cooperates the guide bit, accomplishes the construction in the horizontal hole, guarantees that the work at horizontal drilling is smooth and easy.
Drawings
Fig. 1 is a working state diagram of the present invention.
Fig. 2 is a cross-sectional view of the pilot bit of the present invention.
Fig. 3 is a right side view of the pilot bit of the present invention.
Fig. 4 is the semi-sectional schematic view of the down-the-hole drill bit end of the utility model.
Fig. 5 is the semi-sectional schematic view of the head end and the tail end of the down-the-hole drill of the utility model.
In the attached drawings, 1, a rock-soil hole wall, 2, a drill rod, 3, a guide drill bit, 31, a sleeve, 32, hard alloy teeth, 33, a wear-resistant material layer, 34, a slag discharge channel, 35, a positioning ring, 4, a connector, 5, a down-the-hole drill bit, 6 and a down-the-hole drilling tool.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 to 5, a horizontal directional drilling tool comprises a down-the-hole drilling tool 6, a pilot bit 3 is coaxially sleeved and fixed at the head end and the tail end of the down-the-hole drilling tool 6, the pilot bit 3 comprises a sleeve 31 and hard alloy teeth 32, the inner diameter of the sleeve 31 is matched with the outer diameter of the down-the-hole drilling tool 6, a positioning ring 35 is arranged at the tail end of the sleeve 31, the sleeve 31 is axially positioned on the down-the-hole drilling tool 6 through the positioning ring 35, the sleeve 31 is in threaded connection with the pilot bit 3, the hard alloy teeth 32 are fixed on the head end wall of the sleeve 31 facing the down-the-hole drilling tool, the hard alloy teeth 32 are uniformly distributed on the sleeve end wall, a plurality of slag discharge channels 34 are distributed on the outer wall of the sleeve 31 along the axis, the plurality of slag discharge channels 34 are symmetrically distributed with the central axis of the, the guide drill bit can be protected, and the service life of the guide drill bit is prolonged.
During drilling, the pilot bit 3 separates the down-the-hole drilling tool 6 from the wall of the rock-soil hole, the pilot bit 3 has the main task of contacting with the wall of the rock-soil hole, so that the abrasion of the down-the-hole drilling tool 6 is reduced, only the pilot bit needs to be replaced after the pilot bit 3 is abraded, the cost is greatly saved, the hard alloy teeth are arranged on the pilot bit 3, the effect of separating rock slag on the wall of the hole can be achieved, the drilling tool is guaranteed to drill smoothly in the horizontal direction, and the slag discharge channel processed on the pilot bit can enable the rock slag to pass through the drilling tool smoothly and blow out from the bottom of the hole.
The basic principles and the main features of the invention and the advantages of the invention have been described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A horizontal directional drilling tool comprises a down-the-hole drilling tool, and is characterized in that: the drill bit end and the tail end of the down-the-hole drill are respectively and coaxially sleeved and fixed with a guide drill bit, the guide drill bit comprises a sleeve and hard alloy teeth, the inner diameter of the sleeve is matched with the outer diameter of the down-the-hole drill, the hard alloy teeth are fixed on the end wall of the head end of the sleeve facing the down-the-hole drill, and a plurality of slag discharge channels are distributed on the outer wall of the sleeve along the axis.
2. The horizontal directional drilling tool of claim 1, wherein: the sleeve of the guide drill bit is in threaded connection with the down-the-hole drilling tool.
3. The horizontal directional drilling tool of claim 2, wherein: and a positioning ring is arranged at the tail end of the sleeve, and the sleeve is axially positioned on the down-hole drilling tool through the positioning ring.
4. The horizontal directional drilling tool of claim 1, wherein: the plurality of slag discharge channels are symmetrically distributed by taking the central shaft of the sleeve as the center.
5. The horizontal directional drilling tool of claim 1, wherein: the hard alloy teeth are uniformly distributed on the end wall of the sleeve.
6. The horizontal directional drilling tool of claim 1, wherein: and the outer wall of the sleeve is welded with a wear-resistant material layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022270464.8U CN213627431U (en) | 2020-10-13 | 2020-10-13 | Horizontal directional drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022270464.8U CN213627431U (en) | 2020-10-13 | 2020-10-13 | Horizontal directional drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213627431U true CN213627431U (en) | 2021-07-06 |
Family
ID=76659683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022270464.8U Active CN213627431U (en) | 2020-10-13 | 2020-10-13 | Horizontal directional drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213627431U (en) |
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2020
- 2020-10-13 CN CN202022270464.8U patent/CN213627431U/en active Active
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