CN112227951A - Non-excavation rig guide bit - Google Patents
Non-excavation rig guide bit Download PDFInfo
- Publication number
- CN112227951A CN112227951A CN202011196126.2A CN202011196126A CN112227951A CN 112227951 A CN112227951 A CN 112227951A CN 202011196126 A CN202011196126 A CN 202011196126A CN 112227951 A CN112227951 A CN 112227951A
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- China
- Prior art keywords
- cylinder
- shell
- fixed
- right end
- hollow cylinder
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009412 basement excavation Methods 0.000 title description 6
- 238000005553 drilling Methods 0.000 claims abstract description 31
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 10
- 238000010276 construction Methods 0.000 abstract description 12
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000006698 induction Effects 0.000 abstract description 2
- 239000002689 soil Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/046—Directional drilling horizontal drilling
Abstract
The invention provides a guide drill bit of a trenchless drilling machine, which effectively solves the problems that trenchless equipment in the prior art has larger limitation, needs detection or induction equipment for assistance, is not suitable for a small construction site, and the drilling direction of the drill bit can be completed by cooperation of a plurality of persons; a cam type harmonic reducer is arranged on the hollow cylinder, a conical shell is arranged at the right end of the cylinder, a spherical cavity is formed at the matching position of the cylinder and the shell, an annular plate is arranged in the cavity and fixed with a rigid wheel, a circular plate is arranged in the annular plate, a sliding groove is formed in the outer circular surface at the left side of the circular plate, a pin is arranged at the right end of a flexible wheel and arranged in the sliding groove, a guide plate is arranged at the right side of the shell, a cross rod is fixed at the right end of the circular plate, and the; a plurality of conical bulges are fixed on the outer side of the shell.
Description
Technical Field
The invention relates to the technical field of road construction, in particular to a guide drill bit of a trenchless drilling machine.
Background
In road construction, pipelines and cables are often buried, and the pipelines or the cables are laid and buried after trenches are dug. In the prior art, a commonly used means is a non-excavation technology, a plurality of sections of drill rods are utilized for non-excavation operation, the most common drill bit adopts the front side of the drill bit as an inclined plane, when the drill rods provide enough thrust and torque, the drill bit axially drills, when the drill rod needs to turn, the angle of the inclined plane needs to be adjusted by a detector, the drill rod only provides the thrust, the direction change of the drill bit is realized, and the change of the drilling direction can be completed by cooperation of a plurality of persons in the period. Also there are a small part high-end drill bit to adorn inductor, hydraulic pressure and signal transmitter on the drill bit, but during the specific use, because the operating mode of drill bit is relatively poor, the condition that the signal often appears interrupting or is inaccurate.
In addition to the above, the main reason is that the two kinds of drill bits need more or less detection equipment for assistance, have higher cost and limit the use thereof, and are only suitable for underground construction of large cities, but for small-scale operation, the equipment is large and small in size, such as short-distance underground operation of crossing riverways, roads, small buildings and the like. At present, for the small projects, the traditional construction steps are adopted, the river channel or the road or the building is excavated firstly, then the paving is carried out, and finally the backfilling and the restoration of the excavated original appearance are carried out, so that the efficiency is low and the cost is high.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the guide drill bit of the trenchless drilling machine, which effectively solves the problems that trenchless equipment in the prior art has larger limitation, needs detection or induction equipment for assistance, is not suitable for a small construction site, and the drilling direction of the drill bit can be completed by cooperation of a plurality of persons.
The technical scheme for solving the problem is that the planetary gear type planetary; a cam type harmonic reducer is arranged at the right end of a hollow cylinder, wherein a rigid wheel is fixed with a planet carrier, the hollow cylinder rotates to enable a flexible wheel in the harmonic reducer to rotate through the cam, the right end of the hollow cylinder penetrates through the cam, the right end of the cylinder is spherical, a conical shell with a leftward opening is sleeved at the right end of the cylinder, the left end of the shell is matched with the right end of the cylinder, the cylinder can drive the shell to rotate, a spherical cavity is formed at the matching position of the cylinder and the shell, an annular plate coaxial with the hollow cylinder is arranged in the cavity, the annular plate is fixed with the rigid wheel through a plurality of connecting rods, a horizontal circular plate is arranged in the annular plate, the front end and the rear end of the circular plate are hinged with the annular plate, a chute is arranged on the outer circumferential surface at the left side of the circular plate, an annular bulge is fixed on the right end of the flexible wheel, a pin is, a horizontal cross rod is fixed at the right end of the circular plate, the right end of the cross rod penetrates through the shell and is fixed with the guide plate, and the up-and-down swing of the circular plate drives the cross rod to swing up and down to realize the up-and-down swing of the guide plate; a plurality of conical bulges are fixed on the outer side of the shell.
The invention has smart structure, can roughly predict the drilling distance and the drilling track of the drill bit on the ground bottom, can be well suitable for the drilling operation of a small-sized trenchless construction site, can pre-drill along the set track without detecting or sensing equipment, reduces the use difficulty, greatly improves the construction efficiency and has strong adaptability.
Drawings
FIG. 1 is a front cross-sectional view of the present invention.
FIG. 2 is a top cross-sectional view of the present invention.
Fig. 3 is a sectional view taken along line a-a of fig. 1.
Fig. 4 is a state diagram of the present invention when obliquely inserted into an underground borehole.
Fig. 5 is a state diagram of the present invention when it is released upward from the ground.
FIG. 6 is a schematic view showing the connection of the annular plate, the circular plate and the cross bar according to the present invention.
Fig. 7 is a structural view of a guide plate in the present invention.
Detailed Description
The following description will explain embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 7, the present invention comprises a horizontal hollow cylinder 1, a cylinder 2 coaxial with the hollow cylinder 1 is sleeved outside the hollow cylinder 1, a planetary gear train is installed at the left end of the hollow cylinder 1, wherein a planet carrier 3 is fixed, an inner gear ring 4 is fixed on the inner side wall of the cylinder 2, and a sun gear 5 is coaxially fixed with the hollow cylinder 1; a cam 7 type harmonic reducer is arranged at the right end of a hollow cylinder 1, a rigid wheel 6 is fixed with a planet carrier 3, the hollow cylinder 1 rotates to enable a flexible wheel in the harmonic reducer to rotate through the cam 7, the right end of the hollow cylinder 1 penetrates through the cam 7, the right end of a cylinder 2 is spherical, a conical shell 9 with a leftward opening is sleeved at the right end of the cylinder 2, the left end of the shell 9 is matched with the right end of the cylinder 2, the cylinder 2 can drive the shell 9 to rotate, a spherical cavity is formed at the matching position of the cylinder 2 and the shell 9, an annular plate 10 coaxial with the hollow cylinder 1 is arranged in the cavity, the annular plate 10 is fixed with the rigid wheel 6 through a plurality of connecting rods, a horizontal circular plate 11 is arranged in the annular plate 10, the front end and the rear end of the circular plate 11 are hinged with the annular plate 10, a chute 13 is arranged on the outer circular surface at the left side of the circular plate 11, an annular, the flexible gear drives the sliding groove 13 through the pin 12 to enable the circular plate 11 to swing in the upward direction, the guide plate 15 is arranged on the right side of the shell 9, the horizontal cross rod 16 is fixed at the right end of the circular plate 11, the right end of the cross rod 16 penetrates through the shell 9 and is fixed with the guide plate 15, and the up-and-down swing of the circular plate 11 drives the cross rod 16 to swing up and down to realize the up-and-down swing of the guide plate 15; a plurality of conical projections 14 are fixed to the outside of the housing 9.
In order to fix the planet carrier 3 in the planetary gear train, a plurality of elliptical flat plates 17 which are uniformly distributed on the circumference are fixed on the outer side of the planet carrier 3, and the flat plates 17 are parallel to the axis of the hollow cylinder 1.
In order to realize that the cylinder 2 can drive the shell 9 to rotate, the outer circular surface of the right end of the cylinder 2 is provided with a plurality of arc-shaped grooves 18 which are uniformly distributed in the circumference, the circle center of each arc-shaped groove 18 is positioned at the axial midpoint of the longitudinal rod, the inner side of the left end of the shell 9 is provided with a plurality of spherical protrusions 19 which are in one-to-one correspondence with the arc-shaped grooves 18, the spherical protrusions 19 can slide in the corresponding arc-shaped grooves 18, and the cylinder 2 can drive the shell 9 to rotate through the arc-shaped grooves 18 and the plurality of spherical protrusions 19.
In order that the guide plate 15 provides a better guiding function for the drill, the guide plate 15 is duckbilled.
The sliding groove 13 is arc-shaped and concentric with the circular plate 11, and the pin 12 is inclined and does not separate from the sliding groove 13.
It should be noted that the longitudinal section of the outer edge surface of the guide plate 15 is a V-shape with a left opening, and the cross section of the outer edge surface of the guide plate 15 is a half ellipse; in order to fix the hollow cylinder 1 with a drill rod of a horizontal directional drilling machine, the left end of the hollow cylinder 1 is provided with a flange which is convenient to fix with the drill rod, and the side wall of the shell 9 is provided with a water outlet which is also convenient for the drill rod to provide muddy water for a drill bit; in order to fix the annular plate 10 in rotation during drilling and reduce drilling resistance as much as possible, the flat plate 17 is elliptical and the cross section thereof can be made into a streamline shape; the invention uses the cam 7 type harmonic reducer, wherein the cam 7 is a harmonic generator, has the characteristics of small transmission ratio and large transmission torque, and is particularly suitable for the use environment of the invention.
The bearing is arranged between the cross rod 16 and the shell 9, and the bearing is arranged between the flexible gear and the hollow cylinder 1, so the service environment of the invention is severe, and the bearing is provided with sealing rings at all sections, the sealing rings are arranged between the right end of the cylinder 2 and the inner side wall of the shell 9, and the bearing with the sealing rings can be arranged between the planet carrier 3 and the hollow cylinder 1.
In an initial state, as shown in fig. 1, a disc is in a horizontal state, when the device is used, a small gully is properly dug in a preset place, then a drill rod is fixedly connected with a hollow cylinder 1 in the device, then a drilling machine provides thrust to horizontally push the device into soil rightwards according to the state shown in fig. 1 until a plurality of blades are completely immersed into the soil, and the annular plate 10 cannot rotate, at the moment, the drilling machine can provide the thrust for a drill bit through the drill rod and simultaneously perform rotary drilling, the hollow cylinder 1 rotates to drive the cylinder 2 to rotate through a planetary gear train, the hollow cylinder 1 drives the inner gear ring 4 to rotate through the sun gear 5, the inner gear ring 4 rotates to enable the cylinder 2 to rotate, the cylinder 2 drives the shell 9 to rotate through the arc-shaped grooves 18 and the spherical protrusions 19, and the conical protrusions 14 on the outer side of the shell 9 crush the soil, so as to facilitate drilling; meanwhile, the hollow cylinder 1 rotates to drive the pin 12 on the annular protrusion 8 to slowly rotate through the harmonic reducer, the pin 12 drives the circular plate 11 to enable the cross rod 16 to swing upwards, the cross rod 16 drives the guide plate 15 and the shell 9 to tilt upwards simultaneously, the drilling direction also gradually faces upwards, and after a period of time, the device is completely drilled out from soil, pre-drilling is completed, and reaming and other processes are prepared.
In the scheme, the excavation gully can be removed, the device can be directly debugged to the state shown in fig. 4, and inclined insertion drilling can be realized.
The invention has the outstanding advantages and remarkable progress that:
1. compared with the traditional trenchless equipment, the device saves a shell metal detector and an inductor and is more convenient to use. The invention can predict the track of the drilling machine by controlling the axial included angle between the guide plate 15 and the hollow cylinder 1 in the initial state and combining the parameters of the drilling machine, and can roughly calculate the approximate position of the device when the device leaves the ground according to the entering place, thereby knowing whether the device can smoothly pass through roads, rivers or buildings.
2. According to the invention, the harmonic reducer is used, so that the transmission torque is large, the transmission is small, the guide plate 15 can be slowly lifted in the drilling process, the autonomous direction change can be realized in the drilling process, the non-excavation requirement of a small construction site can be met, and the construction speed is increased.
3. The invention utilizes a plurality of flat plates 17 which are inserted in the soil and can not rotate freely, thereby limiting the free rotation of the annular plate 10 and providing convenience for the steering of the guide plate 15 by utilizing the use environment of the annular plate.
The invention has smart structure, can roughly predict the drilling distance and the drilling track of the drill bit on the ground bottom, can be well suitable for the drilling operation of a small-sized trenchless construction site, can pre-drill along the set track without detecting or sensing equipment, reduces the use difficulty, greatly improves the construction efficiency and has strong adaptability.
Claims (5)
1. A guide drill bit of a trenchless drilling machine is characterized by comprising a horizontal hollow cylinder (1), wherein a cylinder (2) coaxial with the hollow cylinder is sleeved outside the hollow cylinder (1), a planetary gear train is installed at the left end of the hollow cylinder (1), a planet carrier (3) is fixed, an inner gear ring (4) is fixed on the inner side wall of the cylinder (2), and a sun gear (5) is coaxially fixed with the hollow cylinder (1); a cam (7) type harmonic reducer is installed on the right end of a hollow cylinder (1), a rigid wheel (6) is fixed with a planet carrier (3), the hollow cylinder (1) rotates to enable a flexible wheel in the harmonic reducer to rotate through the cam (7), the right end of the hollow cylinder (1) penetrates through the cam (7), the right end of a cylinder (2) is spherical, a conical shell (9) with a left opening is sleeved on the right end of the cylinder (2), the left end of the shell (9) is matched with the right end of the cylinder (2), the cylinder (2) can drive the shell (9) to rotate through rotation, a spherical cavity is formed at the matching position of the cylinder (2) and the shell (9), an annular plate (10) coaxial with the hollow cylinder (1) is arranged in the cavity, the annular plate (10) is fixed with the rigid wheel (6) through a plurality of connecting rods, a horizontal circular plate (11) is arranged in the annular plate (10), the front end and the rear end of the circular plate (11, a sliding groove (13) is formed in the outer circular surface of the left side of the circular plate (11), an annular protrusion (8) is fixed at the right end of the flexible gear, a pin (12) is fixed on the annular protrusion (8), the pin (12) is arranged in the sliding groove (13), the flexible gear drives the sliding groove (13) through the pin (12) to enable the circular plate (11) to swing in the upward direction, a guide plate (15) is arranged on the right side of the shell (9), a horizontal cross rod (16) is fixed at the right end of the circular plate (11), the right end of the cross rod (16) penetrates through the shell (9) and is fixed with the guide plate (15), and the up-and-down swing of the circular plate (11) drives the cross rod (16) to swing; a plurality of conical bulges (14) are fixed on the outer side of the shell (9).
2. The reverse drill bit of the trenchless drilling machine according to claim 1, characterized in that a plurality of elliptical flat plates (1) are fixed on the outer side of the planet carrier (3) and are uniformly distributed in the circumferential direction, and the flat plates (1) are parallel to the axis of the hollow cylinder (1).
3. The inverted drill bit of the trenchless drilling machine as claimed in claim 1, wherein a plurality of arc-shaped grooves (18) are uniformly distributed on the outer circumferential surface of the right end of the cylinder (2), the circle centers of the arc-shaped grooves (18) are positioned at the axial middle point of the longitudinal rod, a plurality of spherical protrusions (19) corresponding to the arc-shaped grooves (18) one by one are arranged on the inner side of the left end of the shell (9), the spherical protrusions (19) can slide in the corresponding arc-shaped grooves (18), and the cylinder (2) rotates to drive the shell (9) to rotate through the arc-shaped grooves (18) and the spherical protrusions (19).
4. The pilot bit of a trenchless drilling rig according to claim 1 wherein the pilot web (15) is duckbilled.
5. The pilot bit of the trenchless drilling machine as claimed in claim 1, wherein the sliding groove (13) is arc-shaped and concentric with the circular plate (11), and the pin (12) is inclined and does not separate from the sliding groove (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011196126.2A CN112227951A (en) | 2020-10-31 | 2020-10-31 | Non-excavation rig guide bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011196126.2A CN112227951A (en) | 2020-10-31 | 2020-10-31 | Non-excavation rig guide bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112227951A true CN112227951A (en) | 2021-01-15 |
Family
ID=74121616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011196126.2A Pending CN112227951A (en) | 2020-10-31 | 2020-10-31 | Non-excavation rig guide bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112227951A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101078335A (en) * | 2007-06-28 | 2007-11-28 | 北京万维亿通科技发展有限公司 | Ultra-short radius radial horizontal well drilling, completion tool and technique thereof |
| CN101368473A (en) * | 2008-10-14 | 2009-02-18 | 哈尔滨工程大学 | Steering mechanism of impact pike |
| CN101956531A (en) * | 2009-07-15 | 2011-01-26 | 中国科学院沈阳自动化研究所 | Underground horizontal drilling combined drilling tool of oil well drilling platform |
| CN105507815A (en) * | 2014-09-27 | 2016-04-20 | 中国石油化工集团公司 | Hydraulically driven intra-casing radial drilling high-pressure rotary grinding head |
| CN106150401A (en) * | 2016-08-10 | 2016-11-23 | 中国石油天然气股份有限公司 | Flex-stem and drilling equipment thereof |
-
2020
- 2020-10-31 CN CN202011196126.2A patent/CN112227951A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101078335A (en) * | 2007-06-28 | 2007-11-28 | 北京万维亿通科技发展有限公司 | Ultra-short radius radial horizontal well drilling, completion tool and technique thereof |
| CN101368473A (en) * | 2008-10-14 | 2009-02-18 | 哈尔滨工程大学 | Steering mechanism of impact pike |
| CN101956531A (en) * | 2009-07-15 | 2011-01-26 | 中国科学院沈阳自动化研究所 | Underground horizontal drilling combined drilling tool of oil well drilling platform |
| CN105507815A (en) * | 2014-09-27 | 2016-04-20 | 中国石油化工集团公司 | Hydraulically driven intra-casing radial drilling high-pressure rotary grinding head |
| CN106150401A (en) * | 2016-08-10 | 2016-11-23 | 中国石油天然气股份有限公司 | Flex-stem and drilling equipment thereof |
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