CN210798843U - Non-excavation rig guide bit - Google Patents
Non-excavation rig guide bit Download PDFInfo
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- CN210798843U CN210798843U CN201920790184.4U CN201920790184U CN210798843U CN 210798843 U CN210798843 U CN 210798843U CN 201920790184 U CN201920790184 U CN 201920790184U CN 210798843 U CN210798843 U CN 210798843U
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Abstract
The utility model relates to a guide drill bit of a trenchless drilling machine, which comprises a probe chamber, a drill bit seat, a stop bolt, a screw, a first O-shaped ring and a telescopic component; the telescopic assembly comprises a second O-shaped ring, a plug, a probe, a positioning plug plate and a spring; the utility model reduces the cost, has simple operation of drill bit replacement, saves time and labor; meanwhile, the problem that the eagle claw type guide drill bit is in threaded connection with the probe chamber, and when the probe chamber rotates anticlockwise to exit or the probe chamber pushes the probe chamber to perform deflecting misoperation so that the rotary cutting resistance is increased suddenly, the eagle claw type guide drill bit breaks away from the probe chamber is solved, and potential safety hazards are eliminated; in addition, the probe rod is quickly disassembled and positioned, a positioning pin hole is not needed to be arranged to position the probe rod, the process flow is simplified, and the manufacturing is convenient.
Description
Technical Field
The utility model relates to a non-excavation rig guide bit.
Background
The guide drill bit of the existing trenchless guide drilling machine adopts a split structure design, namely, one end of a probe chamber is connected with a functional drill bit which mainly comprises a plate-type guide drill bit, an eagle claw-type guide drill bit or other guide drill bits with special requirements and the like; different connecting modes of the drill bits and the probe chambers are different, so that the drill bits and the probe chambers of various specifications need to be stored during construction, the cost is high, the drill bit replacement operation is complicated, and time and labor are wasted; secondly, the eagle claw type guide drill bit is in threaded connection with the probe chamber, when the drill rod is withdrawn in a counterclockwise rotation mode or the drill rod is pushed to make a slope and misoperation, the counterclockwise rotation cutting resistance of the drill rod is increased suddenly, the eagle claw type guide drill bit is often separated from the probe chamber, and great potential safety hazards exist; thirdly, a probe chamber can only be matched with a functional drill bit, and a positioning pin hole is required to be arranged outside the probe chamber to fix the probe rod, so that the axial center and the radial center of the wedge-shaped surface of the probe chamber coincide with each other, the axial distance between the mounting position of the probe rod and the drill bit is kept unchanged, the process is complex, the manufacturing difficulty is high, and the improvement is to be further realized.
SUMMERY OF THE UTILITY MODEL
To the current situation of above-mentioned prior art, the utility model aims to solve the technical problem that a cost is reduced is provided, and easy operation is changed to the drill bit, and labour saving and time saving has thoroughly eliminated the potential safety hazard simultaneously, and has simplified process flow, makes convenient non-excavation rig guide bit.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: a guide drill bit of a trenchless drilling machine comprises a probe chamber, a drill bit seat, stop bolts, screws, a first O-shaped ring and a telescopic assembly; the novel bar detection device is characterized in that an insertion shaft is formed outwards at the other end of the bar detection chamber, and a first O-shaped ring and a drill bit seat are sleeved on the insertion shaft; a stop bolt is arranged inside the outer end of the drill bit seat; a telescopic assembly is arranged inside one end of the probe chamber; a first circumferential groove and a first external thread part are formed on the outer side of the insertion shaft, the first circumferential groove is arranged on the inner side of the first external thread part, a first counter bore is arranged at the center of one end of the drill bit seat, a first threaded hole is arranged at the center of the bottom surface of the first counter bore, a second counter bore is formed at the inner end of the first threaded hole, a third counter bore is formed at the other end of the drill bit seat, a second threaded hole is arranged at the center of the bottom surface of the third counter bore, a first through hole is arranged at the center of the bottom surface of the second threaded hole, the first through hole is communicated with the bottom surface of the second counter bore, correspondingly, the outer end of the insertion shaft is provided with a fourth counter bore, the center of the bottom surface of the fourth counter bore is provided with a through hole, the through hole is communicated with the bottom surface of the connecting hole; an inclined plane is formed in the outer side of the other end of the drill bit seat, and a plurality of screws are inserted and screwed on the inclined plane; a fifth counter bore is further formed in the bottom face of the connecting hole, a third threaded hole is formed in the center of the bottom face of the fifth counter bore, correspondingly, a sixth counter bore is further formed in the outer end of the inserting shaft, and a probe cabin is formed between the sixth counter bore and the third threaded hole.
Preferably, the first threaded hole is sleeved on the first external threaded part in a screwed mode, the outer end of the inserting shaft is attached to the bottom face of the second counter bore, and the first O-shaped ring is sleeved in the first annular groove and attached to the inner wall of the first counter bore.
Preferably, the stop bolt is inserted and screwed in the second threaded hole, the head of the stop bolt is embedded in the third counter bore, a sleeve is formed outwards at the threaded end of the stop bolt, the sleeve passes through the first through hole and is inserted in the fourth counter bore, a flow hole is formed in the center of the outer end of the sleeve, and the flow hole is communicated with the through hole.
Preferably, the telescopic assembly comprises a second O-shaped ring, a plug, a probe rod, a positioning plug plate and a spring; the plug is inserted and screwed in the third threaded hole, the probe is inserted in the probe cabin, the positioning plug plate is inserted and fixed in the sixth counter bore, and the spring is arranged between the probe and the plug; and the second O-shaped ring is sleeved on the plug and attached to the inner wall of the fifth counter bore.
Preferably, a seventh counter bore is formed in the center of one end of the plug, one end of the spring is inserted into the seventh counter bore, the other end of the spring abuts against one end of the probe, and the other end of the probe abuts against the inner end of the positioning blocking plate.
Preferably, a retaining ring is formed outwards at the other end of the plug, a second external thread portion and a second annular groove are formed in the outer side of the other end of the plug, the second annular groove is formed between the second external thread portion and the retaining ring, the second O-shaped ring is sleeved in the second annular groove, the second external thread portion is inserted into the third threaded hole in a screwed mode, and the retaining ring is attached to the bottom face of the connecting hole.
Preferably, a positioning hole is formed in the end face of the other end of the probe, a positioning block is formed outwards on the end face of the inner end of the positioning blocking plate, and the positioning block is inserted into the positioning hole.
Compared with the prior art, the utility model has the advantages of: the utility model realizes the mutual installation with a plurality of functional drill bits only by one specification of the probe chamber by using the drill bit seat, thereby reducing the cost, simplifying the operation of replacing the drill bits, saving time and labor; meanwhile, the problem that the eagle claw type guide drill bit is in threaded connection with the probe chamber, and when the probe chamber rotates anticlockwise to exit or the probe chamber pushes the probe chamber to perform deflecting misoperation so that the rotary cutting resistance is increased suddenly, the eagle claw type guide drill bit breaks away from the probe chamber is solved, and potential safety hazards are eliminated; in addition, the probe rod is quickly disassembled and positioned, a positioning pin hole is not needed to be arranged to position the probe rod, the process flow is simplified, and the manufacturing is convenient.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a cross-sectional view of the probe chamber of the present invention;
FIG. 3 is a cross-sectional view of the drill bit holder of the present invention;
FIG. 4 is a cross-sectional view of the locking bolt of the present invention;
FIG. 5 is a cross-sectional view of the plug of the present invention;
FIG. 6 is a cross-sectional view of the probe of the present invention;
FIG. 7 is a cross-sectional view of the plate drill according to the present invention;
fig. 8 is a sectional view of the eagle claw drill according to the present invention.
Detailed Description
As shown in fig. 1 to 8, the guide drill bit of the trenchless drilling machine comprises a probe chamber 1, a drill bit seat 2, a stop bolt 3, a screw 5, a first O-ring 7 and a telescopic assembly; a shaft hole 102 is formed in the center of one end of the probe chamber 1, and a connecting hole 103 is formed in the center of the bottom surface of the shaft hole 102; an insertion shaft 106 is formed outwards at the other end of the probe chamber 1, and a first O-shaped ring 7 and a drill bit seat 2 are sleeved on the insertion shaft 106; a stop bolt 3 is arranged inside the outer end of the drill bit seat 2; a telescopic component is arranged in one end of the probe room 1; a first circumferential groove 107 and a first external thread part 105 are formed on the outer side of the drill bit seat 2 inserted into the shaft 106, the first circumferential groove 107 is arranged on the inner side of the first external thread part 105, a first counter bore 21 is formed in the center of one end of the drill bit seat 2, a first threaded hole 22 is formed in the center of the bottom surface of the first counter bore 21, a second counter bore 23 is formed in the inner end of the first threaded hole 22, the first threaded hole 22 is sleeved on the first external thread part 105 in a threaded mode, the outer end of the inserted shaft 106 is attached to the bottom surface of the second counter bore 23, and a first O-shaped ring 7 is sleeved in the first circumferential groove 107 and attached to the inner wall of the first counter bore 21; the other end of the drill bit seat 2 is provided with a third counter bore 24, the center of the bottom surface of the third counter bore 24 is provided with a second threaded hole 25, the center of the bottom surface of the second threaded hole 25 is provided with a first through hole 26, the first through hole 26 is communicated with the bottom surface of the second counter bore 23, correspondingly, the outer end of the insertion shaft 106 is provided with a fourth counter bore 104, the center of the bottom surface of the fourth counter bore 104 is provided with a through hole 101, and the through hole 101 is communicated with the bottom surface of the connecting hole 103; the stop bolt 3 is inserted and screwed in the second threaded hole 25, the head of the stop bolt 3 is embedded in the third counter bore 24, a sleeve 31 is formed outwards at the threaded end of the stop bolt 3, the sleeve 31 penetrates through the first through hole 26 and is inserted in the fourth counter bore 104, a through hole 32 is formed in the center of the outer end of the sleeve 31, and the through hole 32 is communicated with the through hole 101; an inclined plane 27 is arranged on the outer side of the other end of the drill bit seat 2, and a plurality of screws 5 are inserted and screwed on the inclined plane 27; a fifth counter bore 108 is further formed in the bottom surface of the connecting hole 103, a third threaded hole 109 is formed in the center of the bottom surface of the fifth counter bore 108, correspondingly, a sixth counter bore 111 is further formed in the outer end of the insertion shaft 106, and a probe cabin 110 is formed between the sixth counter bore 111 and the third threaded hole 109; the telescopic assembly comprises a second O-shaped ring 10, a plug 9, a probe 8, a positioning plug plate 6 and a spring 13; the plug 9 is inserted and screwed in the third threaded hole 109, the probe 8 is inserted in the probe cabin 110, the positioning plug plate 6 is inserted and fixed in the sixth counter bore 111, and the spring 13 is arranged between the probe 8 and the plug 9; the second O-shaped ring 10 is sleeved on the plug 9 and attached to the inner wall of the fifth counter bore 108; a seventh counter bore 91 is formed in the center of one end of the plug 9, one end of the spring 13 is inserted into the seventh counter bore 91, the other end of the spring 13 abuts against one end of the probe 8, the other end of the probe 8 abuts against the inner end of the positioning blocking plate 6, a retaining ring 92 is formed outwards at the other end of the plug 9, a second external thread 94 and a second annular groove 93 are formed in the outer side of the other end of the plug 9, the second annular groove 93 is formed between the second external thread 94 and the retaining ring 92, the second O-ring 10 is sleeved in the second annular groove 93, the second external thread 94 is inserted into the third threaded hole 109 in a screwed mode, and the retaining ring 92 is attached to the bottom surface of the connecting hole; the end face of the other end of the probe 8 is provided with a positioning hole 81, a positioning block 61 is outwards formed on the end face of the inner end of the positioning blocking plate 6, and the positioning block 61 is inserted into the positioning hole 81 to prevent the probe 8 from rotating.
When in use: the screws 5 are detached, and then the screws 5 penetrate through the round holes at the corresponding positions on the plate-type drill 4 and are inserted into the drill base 2 in a screwed manner, so that the plate-type drill 4 is fixed on the drill base 2, and one side of the plate-type drill 4 is attached to the inclined plane 27; a rotating shaft is inserted into the connecting hole 103 in a screwed manner, the rotation of the rotating shaft can drive the probe room 1 and the drill bit seat 2 to rotate together, and the stop bolt 3 can prevent the relative rotation of the probe room 1 and the drill bit seat 2; when the eagle claw type drill bit 11 needs to be used, only the plurality of screws 5 need to be detached, the wedge face 111 on the eagle claw type drill bit 11 is attached to the inclined plane 27, and the plurality of screws 5 penetrate through the round holes in the corresponding positions on the eagle claw type drill bit 11 and are inserted into the drill bit seat 2 to be screwed into the drill bit seat 2, so that the eagle claw type drill bit 11 is fixed on the drill bit seat 2; the first O-ring 7 and the second O-ring 10 both play a role in sealing; when the probe 8 needs to be detached, the plug 9 is rotated, so that the second external thread portion 94 is slowly separated from the third threaded hole 109 outwards, the plug 9 is detached, the probe 8 only needs to be taken out, and the probe can be reversely assembled back according to the same principle, and the spring 13 ensures that the inner end of the probe 8 is always tightly propped against the positioning blocking plate 6 and keeps the axial distance between the inner end of the probe and the drill bit unchanged.
The guide drill bit of the existing trenchless guide drilling machine adopts a split structure design, namely, one end of a probe chamber is connected with a functional drill bit which mainly comprises a plate-type guide drill bit, an eagle claw-type guide drill bit or other guide drill bits with special requirements and the like; different connecting modes of the drill bits and the probe chambers are different, so that the drill bits and the probe chambers of various specifications need to be stored during construction, the cost is high, the drill bit replacement operation is complicated, and time and labor are wasted; secondly, the eagle claw type guide drill bit is in threaded connection with the probe chamber, when the drill rod is withdrawn in a counterclockwise rotation mode or the drill rod is pushed to make a slope and misoperation, the counterclockwise rotation cutting resistance of the drill rod is increased suddenly, the eagle claw type guide drill bit is often separated from the probe chamber, and great potential safety hazards exist; thirdly, one probe chamber can only be matched with one functional drill bit, and a positioning pin hole is required to be arranged on the outer side of the probe chamber to fix the probe rod, so that the center of the positioning pin hole is coincident with the axial center and the radial center of a wedge-shaped surface of the probe chamber, the axial distance between the installation position of the probe rod and the drill bit is kept unchanged, the process is complex, and the manufacturing difficulty is high; the utility model realizes the mutual installation of the drill bit and a plurality of functional drill bits only by one specification of the probe chamber 1 by using the drill bit seat 2, thereby reducing the cost, simplifying the operation of replacing the drill bits, saving time and labor; meanwhile, the problem that the eagle claw type guide drill bit 11 is in threaded connection with the probe chamber 1, and when the probe chamber 1 rotates anticlockwise to exit or the probe chamber 1 pushes deflecting misoperation to enable rotary cutting resistance to be increased suddenly, the eagle claw type guide drill bit breaks away from the probe chamber is solved, and potential safety hazards are eliminated; in addition, quick assembly disassembly and positioning of the probe 8 are realized, a positioning pin hole is not needed to be arranged to position the probe 8, the process flow is simplified, and the manufacturing is convenient.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (7)
1. A guide drill bit of a trenchless drilling machine comprises a probe chamber, a drill bit seat, stop bolts, screws, a first O-shaped ring and a telescopic assembly; the novel bar detection device is characterized in that an insertion shaft is formed outwards at the other end of the bar detection chamber, and a first O-shaped ring and a drill bit seat are sleeved on the insertion shaft; a stop bolt is arranged inside the outer end of the drill bit seat; a telescopic assembly is arranged inside one end of the probe chamber; a first circumferential groove and a first external thread part are formed on the outer side of the insertion shaft, the first circumferential groove is arranged on the inner side of the first external thread part, a first counter bore is arranged at the center of one end of the drill bit seat, a first threaded hole is arranged at the center of the bottom surface of the first counter bore, a second counter bore is formed at the inner end of the first threaded hole, a third counter bore is formed at the other end of the drill bit seat, a second threaded hole is arranged at the center of the bottom surface of the third counter bore, a first through hole is arranged at the center of the bottom surface of the second threaded hole, the first through hole is communicated with the bottom surface of the second counter bore, correspondingly, the outer end of the insertion shaft is provided with a fourth counter bore, the center of the bottom surface of the fourth counter bore is provided with a through hole, the through hole is communicated with the bottom surface of the connecting hole; an inclined plane is formed in the outer side of the other end of the drill bit seat, and a plurality of screws are inserted and screwed on the inclined plane; a fifth counter bore is further formed in the bottom face of the connecting hole, a third threaded hole is formed in the center of the bottom face of the fifth counter bore, correspondingly, a sixth counter bore is further formed in the outer end of the inserting shaft, and a probe cabin is formed between the sixth counter bore and the third threaded hole.
2. The trenchless drilling machine pilot bit of claim 1, wherein the first threaded hole is sleeved on the first external threaded portion, the outer end of the insertion shaft is attached to the bottom surface of the second counterbore, and the first O-ring is sleeved in the first circumferential groove and attached to the inner wall of the first counterbore.
3. The guide drill bit of the trenchless drilling machine as claimed in claim 1, wherein the stop bolt is inserted and screwed in the second threaded hole, the head of the stop bolt is embedded in the third counter bore, the threaded end of the stop bolt is outwardly formed with a sleeve, the sleeve passes through the first through hole and is inserted in the fourth counter bore, the center of the outer end of the sleeve is provided with a through hole, and the through hole is communicated with the through hole.
4. The trenchless drilling machine pilot bit of claim 1, wherein the telescoping assembly comprises a second O-ring, a plug, a probe, a positioning plug, and a spring; the plug is inserted and screwed in the third threaded hole, the probe is inserted in the probe cabin, the positioning plug plate is inserted and fixed in the sixth counter bore, and the spring is arranged between the probe and the plug; and the second O-shaped ring is sleeved on the plug and attached to the inner wall of the fifth counter bore.
5. The guide drill bit of the trenchless drilling machine as claimed in claim 4, wherein a seventh counter bore is formed in the center of one end of the plug, one end of the spring is inserted into the seventh counter bore, the other end of the spring abuts against one end of the probe, and the other end of the probe abuts against the inner end of the positioning blocking plate.
6. The guide drill bit of the trenchless drilling machine as claimed in claim 5, wherein a retaining ring is formed outwards at the other end of the plug, a second external thread portion and a second annular groove are formed in the outer side of the other end of the plug, the second annular groove is formed between the second external thread portion and the retaining ring, the second O-shaped ring is sleeved in the second annular groove, the second external thread portion is inserted into the third threaded hole in a threaded manner, and the retaining ring is attached to the bottom surface of the connecting hole.
7. The guide drill bit of the trenchless drilling machine as claimed in claim 5, wherein a positioning hole is formed on the end surface of the other end of the probe, a positioning block is outwardly formed on the end surface of the inner end of the positioning blocking plate, and the positioning block is inserted into the positioning hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920790184.4U CN210798843U (en) | 2019-05-29 | 2019-05-29 | Non-excavation rig guide bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920790184.4U CN210798843U (en) | 2019-05-29 | 2019-05-29 | Non-excavation rig guide bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210798843U true CN210798843U (en) | 2020-06-19 |
Family
ID=71243289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920790184.4U Active CN210798843U (en) | 2019-05-29 | 2019-05-29 | Non-excavation rig guide bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210798843U (en) |
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2019
- 2019-05-29 CN CN201920790184.4U patent/CN210798843U/en active Active
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