CN110439466A - A kind of stage power borehole-enlarging drilling tool - Google Patents
A kind of stage power borehole-enlarging drilling tool Download PDFInfo
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- CN110439466A CN110439466A CN201910830095.2A CN201910830095A CN110439466A CN 110439466 A CN110439466 A CN 110439466A CN 201910830095 A CN201910830095 A CN 201910830095A CN 110439466 A CN110439466 A CN 110439466A
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- 238000005553 drilling Methods 0.000 title claims abstract description 61
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 51
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 239000000945 filler Substances 0.000 claims description 22
- 210000004907 gland Anatomy 0.000 claims description 18
- 238000010276 construction Methods 0.000 abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 230000009977 dual effect Effects 0.000 abstract description 4
- 238000004904 shortening Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/04—Electric drives
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of stage power borehole-enlarging drilling tools, it is related to horizontal directional drilling technical field, it include: screw motor component, submersible motor component, speed reducer, level-one cutter head assembly and second level cutter head assembly, screw motor component includes screw motor shell, screw motor and transmission shaft, and speed reducer includes decelerator shell, gear set, gear shaft, first bearing group, output spline housing and second bearing group.Using level-one cutter head assembly and second level cutter head assembly, and level-one cutter head assembly and second level cutter head assembly are respectively by screw motor component and submersible motor component as power source, dual power source makes the efficiency of drilling tool lifting reaming, Double-cutter component single counter bore diameter becomes larger, the time for shortening construction, construction cost is saved.It is smaller to solve the diameter in the prior art during water directed drilling, by drilling machine torque limit, single reaming with this, to reach expected borehole diameter, needs the technical issues of undergoing reaming many times.
Description
Technical field
The present invention relates to horizontal directional drilling technical field more particularly to a kind of stage power borehole-enlarging drilling tools.
Background technique
Horizontal directional drilling technology, be one kind quickly grow, be technologically advanced, widely used no-excavation construction method.In
Under the premise of rivers, the construction across the unsuitable excavation such as building, horizontal directional drilling technology just plays very important work
With reducing difficulty of construction, it is all to shorten construction across rivers, across building layings pipeline or to be laid with cable and providing convenience
Phase.Currently, the diameter by drilling machine torque limit, single reaming is smaller during water directed drilling, it is straight to reach expected wellbore
Diameter needs to undergo reaming many times.Also, when counter bore diameter is excessive, it is also necessary to replace powerful drilling machine.
Therefore, exist in the prior art during water directed drilling, by drilling machine torque limit, the diameter of single reaming compared with
It is small, to reach expected borehole diameter, need the technical issues of undergoing reaming many times.
Summary of the invention
The present invention provides a kind of stage power borehole-enlarging drilling tools, to solve in the prior art in water directed drilling process
In, the diameter by drilling machine torque limit, single reaming is smaller, to reach expected borehole diameter, needs to undergo reaming many times
The technical issues of.
The embodiment of the invention provides a kind of stage power borehole-enlarging drilling tools, comprising: screw motor component, submersible motor group
Part, speed reducer, level-one cutter head assembly and second level cutter head assembly, screw motor component are connect with level-one cutter head assembly, speed reducer
The periphery of screw motor component is set and is connect with screw motor component, submersible motor component passes through speed reducer and second level cutterhead
Component connection；Wherein,
Screw motor component includes screw motor shell, screw motor and transmission shaft, the both ends of transmission shaft respectively with spiral shell
The rotor of bar motor is connected with level-one cutter head assembly, and transmission shaft is arranged in screw motor shell and connects with screw motor shell
It connects, screw motor shell is connect with speed reducer；
Speed reducer includes decelerator shell, gear set, gear shaft, first bearing group, output spline housing and second bearing
Group, the both ends of gear shaft be respectively arranged with the matched outer toothing of gear set and with output the matched external splines knot of spline housing
Structure, gear set and submersible motor component are rotatablely connected, and gear shaft both ends pass through outer toothing respectively and connect and pass through with gear set
External splines structure is connect with output spline housing, and the output end for exporting spline housing is connect with second level cutter head assembly, and gear shaft leads to respectively
First bearing group is crossed to connect with decelerator shell and by second bearing group and screw motor cage connection, screw motor shell with
Decelerator shell is fixedly connected.
Preferably, speed reducer further includes speed reducer end cap, end cap seal filler and the first gland, deceleration generator terminal
Lid is connect with decelerator shell, and the first gland is used to for end cap seal filler to be extruded in speed reducer end cap and output spline housing
Outer wall between.
Preferably, speed reducer further includes filler neck bush, the second gland, neck bush airtight and watertight padding and compresses spiral shell
It is female.Filler neck bush, the second gland and neck bush airtight and watertight padding be arranged at screw motor shell and gear shaft it
Between, clamp nut is for neck bush airtight and watertight padding to be extruded between filler neck bush and the second gland.
Preferably, first bearing group is one or more tapered roller bearings, and gear shaft passes through tapered roller bearing and subtracts
Fast machine cage connection.
Preferably, tapered roller bearing is two, symmetrical to be arranged between decelerator shell and gear shaft.
Preferably, second bearing group is one or more needle bearings, and gear shaft passes through outside needle bearing and screw motor
Shell connection.
Preferably, level-one cutter head assembly include level-one cutterhead, one or more first gear wheel bracket and with the first gear wheel
Bracket corresponds to the first gear wheel of number, and the output end for exporting spline housing is connect with level-one cutterhead, and the first gear wheel passes through the first gear wheel
Bracket is connect with level-one cutterhead.
Preferably, second level cutter head assembly include second level cutterhead, one or more second gear wheel bracket and with the second gear wheel
Bracket corresponds to the second gear wheel of number, and the output end for exporting spline housing is connect with second level cutterhead, and the second gear wheel passes through the second gear wheel
Bracket is connect with second level cutterhead.
It preferably, further include righting device assembly, righting device assembly is connect with speed reducer and/or submersible motor component.
Preferably, submersible motor component includes mounting rack and one or more submersible motor, and the shell of submersible motor passes through
Mounting rack is connect with screw motor shell and/or decelerator shell；Gear set includes the gear of number corresponding with submersible motor, is dived
The rotor of oily motor is connect with gear, and gear is connect by outer toothing with gear.
In conclusion being related to horizontal directional drilling technical field the present invention provides a kind of stage power borehole-enlarging drilling tool, wrap
It includes: screw motor component, submersible motor component, speed reducer, level-one cutter head assembly and second level cutter head assembly, screw motor group
Part is connect with level-one cutter head assembly, and speed reducer is arranged in the periphery of screw motor component and connect with screw motor component, latent oil
Electric machine assembly is connect by speed reducer with second level cutter head assembly；Wherein, screw motor component includes screw motor shell, screw rod horse
It reaches and transmission shaft, the both ends of transmission shaft is connect with the rotor of screw motor and level-one cutter head assembly respectively, transmission shaft setting exists
In screw motor shell and with screw motor cage connection, screw motor shell connect with speed reducer；Speed reducer includes speed reducer
Shell, gear set, gear shaft, first bearing group, output spline housing and second bearing group, the both ends of gear shaft are respectively set
Have with the matched outer toothing of gear set and turns with the output matched external splines structure of spline housing, gear set and submersible motor component
Dynamic connection, gear shaft both ends are connect with gear set by outer toothing respectively and are connected by external splines structure and output spline housing
It connects, the output end for exporting spline housing is connect with second level cutter head assembly, and gear shaft passes through first bearing group and decelerator shell respectively
It connects and by second bearing group and screw motor cage connection, screw motor shell is fixedly connected with decelerator shell.This reality
It applies in example, uses level-one cutter head assembly and second level cutter head assembly, and level-one cutter head assembly and second level cutter head assembly are respectively by spiral shell
Bar motor sub-assembly and submersible motor component provide power source, and dual power source makes the efficiency of drilling tool lifting reaming, Double-cutter group
Part single counter bore diameter becomes larger, and shortens the time of construction, has saved construction cost.When implementation, can make level-one cutter head assembly and
The rotation of second level cutter head assembly is on the contrary, direction of rotation makes the reaction torque of two cutter head assemblies in drilling process be able to counteracting one on the contrary
Part has played good effect to the reaction torque balance of entire drilling tool.It solves in the prior art with this in water directed drilling
In the process, by drilling machine torque limit, the diameter of single reaming is smaller, to reach expected borehole diameter, needs to undergo many times
The technical issues of reaming.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, the followings are specific embodiments of the present invention.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is the perspective view of the stage power borehole-enlarging drilling tool provided described in the embodiment of the present invention；
Fig. 2 is the sectional drawing of the stage power borehole-enlarging drilling tool provided described in the embodiment of the present invention；
Fig. 3 is the partial enlarged view of the stage power borehole-enlarging drilling tool provided described in the embodiment of the present invention.
Icon: 20- stage power borehole-enlarging drilling tool；21- screw motor component；2- submersible motor component；2- speed reducer；17-
Level-one cutter head assembly；16- second level cutter head assembly；211- screw motor shell；212- screw motor；213- transmission shaft；4- slows down
Machine shell；5- gear set；6- gear shaft；7- first bearing group；11- exports spline housing；12- second bearing group；8- deceleration generator terminal
Lid；9- end cap seal filler；The first gland of 10-；13- filler neck bush；The second gland of 14-；The sealing of 30- neck bush
Filler；15- clamp nut；41- level-one cutterhead；18- the first gear wheel bracket；The first gear wheel of 19-；42- second level cutterhead；28- second
Gear wheel bracket；The second gear wheel of 29-；1- righting device assembly；3- mounting rack.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
It please refers to Fig.1 to Fig.3 as a kind of stage power borehole-enlarging drilling tool 20 provided by the embodiment of the present invention, comprising: screw rod
Motor sub-assembly 21, submersible motor component 2, speed reducer 2, level-one cutter head assembly 17 and second level cutter head assembly 16, screw motor group
Part 21 is connect with level-one cutter head assembly 17, speed reducer 2 be arranged in the periphery of screw motor component 21 and with screw motor component 21
Connection, submersible motor component 2 are connect by speed reducer 2 with second level cutter head assembly 16；Wherein,
Screw motor component 21 includes screw motor shell 211, screw motor 212 and transmission shaft 213, transmission shaft 213
Both ends connect respectively with the rotor of screw motor 212 and level-one cutter head assembly 17, transmission shaft 213 be arranged in screw motor shell
It is connect in 211 and with screw motor shell 211, screw motor shell 211 is connect with speed reducer 2；
Speed reducer 2 include decelerator shell 4, gear set 5, gear shaft 6, first bearing group 7, output spline housing 11 and
Second bearing group 12, the both ends of gear shaft 6 be respectively arranged with the matched outer toothing of gear set 5 and with output spline housing 11
The external splines structure matched, gear set 5 and submersible motor component 2 are rotatablely connected, and 6 both ends of gear shaft pass through outer toothing and tooth respectively
Wheel group 5 is connected and is connect by external splines structure with output spline housing 11, exports the output end and second level cutter disc groups of spline housing 11
Part 16 connects, and gear shaft 6 connect by first bearing group 7 with decelerator shell 4 respectively and pass through second bearing group 12 and screw rod
Motor case 211 connects, and screw motor shell 211 is fixedly connected with decelerator shell 4.
When it is implemented, screw motor 212 is the first power source, screw motor 212 provides revolving speed and torque, transmission shaft
213 both ends are connect with the rotor of screw motor 212 and level-one cutter head assembly 17 respectively, by being arranged in screw motor shell
Revolving speed and torque are transmitted to level-one cutter head assembly 17 by the transmission shaft 213 in 211.When specifically used, 212 power of screw motor is come from
Cleaner for high-pressure drilling fluid is flowed through the stator of screw motor 212 and the gap of rotor by cleaner for high-pressure drilling fluid, so that generating torque closes revolving speed.
Submersible motor component 2 is the second power source, and revolving speed and torque are passed to second level cutter head assembly 16 by speed reducer 2.Latent oil electricity
2 output torque of thermomechanical components passes to gear shaft 6 by gear set 5, and gear shaft 6 imparts power to second level cutter head assembly 16.It can be with
It is clear that level-one cutter head assembly 17 and second level cutter head assembly 16 are each responsible for the reaming in the annular region of two different-diameters
Cutwork, level-one cutter head assembly 17 and second level cutter head assembly 16 have selected different power sources respectively.Pass through level-one cutter disc groups
Quickly circumgyration incision rock can be disposable in the case where ensure that drilling machine power is constant for part 17 and 16 energy of second level cutter head assembly
The hole for expanding larger diameter reduces the reaming period, reduces construction cost.
In the present embodiment, level-one cutter head assembly 17 and second level cutter head assembly 16, and 17 He of level-one cutter head assembly are used
Second level cutter head assembly 16 provides power source by screw motor component 21 and submersible motor component 2 respectively, so that single counter bore diameter
Become larger, dual power source makes the efficiency of drilling tool lifting reaming；When implementation, level-one cutter head assembly 17 and second level cutter head assembly can be made
16 rotation is on the contrary, direction of rotation makes the reaction torque of two cutterheads in drilling process be able to offset a part on the contrary, to entire brill
The reaction torque balance of tool has played good effect；Meanwhile the time of construction is shortened, save construction cost, the scope of application
It is able to bigger.It is solved in the prior art during water directed drilling with this, by drilling machine torque limit, the diameter of single reaming
It is smaller, to reach expected borehole diameter, need the technical issues of undergoing reaming many times.
Preferably, speed reducer 2 further includes speed reducer end cap 8, end cap seal filler 9 and the first gland 10, is slowed down
Generator terminal lid 8 is connect with decelerator shell 4, the first gland 10 be used for by end cap seal filler 9 be extruded in speed reducer end cap 8 with
Between the outer wall for exporting spline housing 11.
When it is implemented, filler is mainly used for speed reducer end cap 8 and exports the dynamic sealing at spline housing 11.Described first fills out
Expect that gland 10 is used for the compression of filler at speed reducer end cap 8 and output spline housing 11.Second level cutter head assembly 16 and output spline
It can be bolted and be driven between set 11, decelerator shell 4 passes through speed reducer end cap 8 and screw motor shell 211
It is fixedly connected.
Preferably, speed reducer 2 further include filler neck bush 13, the second gland 14, neck bush airtight and watertight padding 30 and
Clamp nut 15.Filler neck bush 13, the second gland 14 and neck bush airtight and watertight padding 30 are arranged at outside screw motor
Between shell 211 and gear shaft 6, clamp nut 15 is filled out for neck bush airtight and watertight padding 30 to be extruded in filler neck bush 13 and second
Expect between gland 14.
When it is implemented, filler is mainly used for the dynamic sealing at gear shaft 6 and screw motor shell 211, the compression spiral shell
Compression of the mother 15 for filler at gear shaft 6 and screw motor shell 211.
Preferably, first bearing group 7 is one or more tapered roller bearings, gear shaft 6 by tapered roller bearing with
Decelerator shell 4 connects.
When it is implemented, tapered roller bearing is mainly used for the centering of gear shaft 6 and undertaking for axial force.
Preferably, tapered roller bearing is two, symmetrical to be arranged between decelerator shell 4 and gear shaft 6.
When it is implemented, being positioned by two tapered roller bearings being symmetrically installed to gear shaft 6, so that gear shaft
6 is more firm.
Preferably, second bearing group 12 is one or more needle bearings, and gear shaft 6 passes through needle bearing and screw motor
Shell 211 connects.
When it is implemented, setting second bearing is primarily to bear the extruding between gear shaft 6 and decelerator shell 4,
Resistance when gear shaft 6 rotates is reduced simultaneously.
Preferably, level-one cutter head assembly 17 includes level-one cutterhead 41, one or more first gear wheel bracket 18 and with the
First gear wheel 19 of the corresponding number of one gear wheel bracket 18, the output end of output spline housing 11 are connect with level-one cutterhead 41, the first tooth
Wheel 19 is connect by the first gear wheel bracket 18 with level-one cutterhead 41.
When it is implemented, level-one cutterhead 41 can relative to second level cutterhead 42 diameter it is smaller, level-one cutterhead 41 using circle
Plate-like；Level-one cutterhead 41 far from 2 direction of speed reducer pair end face on be provided with one or more first gear wheel brackets 18, often
One level-one gear wheel bracket is connected with the first gear wheel 19, is cut by the first gear wheel 19 to rock.
Preferably, second level cutter head assembly 16 includes second level cutterhead 42, one or more second gear wheel bracket 28 and with the
Second gear wheel 29 of the corresponding number of two gear wheel brackets 28, the output end of output spline housing 11 are connect with second level cutterhead 42, the second tooth
Wheel 29 is connect by the second gear wheel bracket 28 with second level cutterhead 42.
When it is implemented, second level cutterhead 42 can relative to level-one cutterhead 41 diameter it is bigger, second level cutterhead 42 can also be with
Using discoid；Second level cutterhead 42 far from 2 direction of speed reducer pair end face on be provided with one or more second gear wheel branch
Frame 28, each second level gear wheel bracket are connected with the second gear wheel 29, are cut by the first gear wheel 19 to rock.It can understand
, the first gear wheel bracket 18 and the second gear wheel bracket 28 can use identical structure and material, the first gear wheel 19 and the second tooth
Wheel 29 can also be just with identical structure and material.
It preferably, further include righting device assembly 1, righting device assembly 1 is connect with speed reducer 2 and/or submersible motor component 2.
When it is implemented, righting device assembly 1 is cut between guaranteeing stage power borehole-enlarging drilling tool 20 always in the wellbore, and
Guarantee that stage power borehole-enlarging drilling tool 20 is crept by desired guiding trajectory.Wherein, righting device assembly 1 may include two or more rightings
Device, centralizer are separately positioned on 2 periphery of 4 periphery of decelerator shell and/or submersible motor component of stage power borehole-enlarging drilling tool 20；
For example, two centralizers that 20 front and back of stage power borehole-enlarging drilling tool is arranged in ensure that twin-stage is dynamic when righting device assembly 1 is two
The middle that power borehole-enlarging drilling tool 20 is in wellbore always carries out rotary cutting, avoids decelerator shell 4 and submersible motor group
Unnecessary friction occurs for part 2 and the borehole wall.
Preferably, submersible motor component 2 includes mounting rack 3 and one or more submersible motor, and the shell of submersible motor is logical
Mounting rack 3 is crossed to connect with screw motor shell 211 and/or decelerator shell 4；Gear set 5 includes number corresponding with submersible motor
Gear, the rotor of submersible motor connect with gear, and gear is connect by outer toothing with gear.
When it is implemented, screw motor shell 211 and submersible motor component 2 are connected firmly by motor flange.Submersible motor can
Think four, the gear connecting with submersible motor is done rotation movement relative to gear shaft 6, the outer toothing of gear and gear shaft 6
Tooth cooperation delivers torque to gear shaft 6, and gear shaft 6 delivers power to second level cutterhead 42.
In conclusion being related to horizontal directional drilling technical field the present invention provides a kind of stage power borehole-enlarging drilling tool, wrap
It includes: screw motor component, submersible motor component, speed reducer, level-one cutter head assembly and second level cutter head assembly, screw motor group
Part is connect with level-one cutter head assembly, and speed reducer is arranged in the periphery of screw motor component and connect with screw motor component, latent oil
Electric machine assembly is connect by speed reducer with second level cutter head assembly；Wherein, screw motor component includes screw motor shell, screw rod horse
It reaches and transmission shaft, the both ends of transmission shaft is connect with the rotor of screw motor and level-one cutter head assembly respectively, transmission shaft setting exists
In screw motor shell and with screw motor cage connection, screw motor shell connect with speed reducer；Speed reducer includes speed reducer
Shell, gear set, gear shaft, first bearing group, output spline housing and second bearing group, the both ends of gear shaft are respectively set
Have with the matched outer toothing of gear set and turns with the output matched external splines structure of spline housing, gear set and submersible motor component
Dynamic connection, gear shaft both ends are connect with gear set by outer toothing respectively and are connected by external splines structure and output spline housing
It connects, the output end for exporting spline housing is connect with second level cutter head assembly, and gear shaft passes through first bearing group and decelerator shell respectively
It connects and by second bearing group and screw motor cage connection, screw motor shell is fixedly connected with decelerator shell.This reality
Apply in example, use level-one cutter head assembly and second level cutter head assembly, and level-one cutter head assembly and second level cutter head assembly respectively by
Screw motor component and submersible motor component provide power source, so that single counter bore diameter becomes larger, dual power source mentions drilling tool
The efficiency of reaming is risen；When implementation, the rotation of level-one cutter head assembly and second level cutter head assembly can be made on the contrary, direction of rotation makes on the contrary
The reaction torque for obtaining two cutterheads in drilling process is able to offset a part, has played good work to the reaction torque balance of entire drilling tool
With；Meanwhile the time of construction is shortened, construction cost is saved, the scope of application is able to bigger.It is solved in the prior art with this
During water directed drilling, the diameter by drilling machine torque limit, single reaming is smaller, to reach expected borehole diameter, need
The technical issues of undergoing reaming many times.
In short, the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (10)
1. a kind of stage power borehole-enlarging drilling tool characterized by comprising screw motor component, submersible motor component, speed reducer,
Level-one cutter head assembly and second level cutter head assembly, the screw motor component are connect with the level-one cutter head assembly, the deceleration
Machine is arranged in the periphery of the screw motor component and connect with the screw motor component, and the submersible motor component passes through institute
Speed reducer is stated to connect with the second level cutter head assembly；Wherein,
The screw motor component includes screw motor shell, screw motor and transmission shaft, the both ends difference of the transmission shaft
It is connect with the rotor of the screw motor and the level-one cutter head assembly, the transmission shaft is arranged in the screw motor shell
And with the screw motor cage connection, the screw motor shell connect with the speed reducer；
The speed reducer includes decelerator shell, gear set, gear shaft, first bearing group, output spline housing and second bearing
Group, the both ends of the gear shaft are respectively arranged with the matched outer toothing of the gear set and match with the output spline housing
External splines structure, the gear set and the submersible motor component be rotatablely connected, and the gear shaft both ends pass through described respectively
Outer toothing connect with the gear set and is connect by the external splines structure with the output spline housing, the output spline
The output end of set is connect with the second level cutter head assembly, and the gear shaft passes through the first bearing group and the speed reducer respectively
Cage connection and by the second bearing group and the screw motor cage connection, the screw motor shell and the deceleration
Machine shell is fixedly connected.
2. stage power borehole-enlarging drilling tool according to claim 1, which is characterized in that the speed reducer further includes deceleration generator terminal
Lid, end cap seal filler and the first gland, the speed reducer end cap are connect with the decelerator shell, and described first
Gland is used to for the end cap seal filler being extruded between the speed reducer end cap and the outer wall of the output spline housing.
3. stage power borehole-enlarging drilling tool according to claim 1, which is characterized in that the speed reducer further includes filler liner
Set, the second gland, neck bush airtight and watertight padding and clamp nut.The filler neck bush, second gland,
And the neck bush airtight and watertight padding is arranged between the screw motor shell and gear shaft, the clamp nut is used for will
Neck bush airtight and watertight padding is extruded between the filler neck bush and second gland.
4. stage power borehole-enlarging drilling tool according to any one of claims 1 to 3, which is characterized in that the first bearing group
For one or more tapered roller bearings, the gear shaft is connect by the tapered roller bearing with the decelerator shell.
5. stage power borehole-enlarging drilling tool according to claim 4, which is characterized in that the tapered roller bearing is two,
It is symmetrical to be arranged between the decelerator shell and the gear shaft.
6. stage power borehole-enlarging drilling tool according to claim 4, which is characterized in that the second bearing group is one or more
A needle bearing, the gear shaft pass through the needle bearing and the screw motor cage connection.
7. stage power borehole-enlarging drilling tool according to claim 4, which is characterized in that the level-one cutter head assembly includes level-one
First gear wheel of cutterhead, one or more first gear wheel brackets and number corresponding with the first gear wheel bracket, the output
The output end of spline housing is connect with the level-one cutterhead, and first gear wheel passes through the first gear wheel bracket and the level-one knife
Disk connection.
8. stage power borehole-enlarging drilling tool according to claim 4, which is characterized in that the second level cutter head assembly includes second level
Second gear wheel of cutterhead, one or more second gear wheel brackets and number corresponding with the second gear wheel bracket, the output
The output end of spline housing is connect with the second level cutterhead, and second gear wheel passes through the second gear wheel bracket and the second level knife
Disk connection.
9. stage power borehole-enlarging drilling tool according to claim 4, which is characterized in that it further include righting device assembly, it is described to help
Positive device assembly is connect with the speed reducer and/or the submersible motor component.
10. stage power borehole-enlarging drilling tool according to claim 4, which is characterized in that submersible motor component includes mounting rack
With one or more submersible motor, the shell of the submersible motor by the mounting rack and the screw motor shell and/or
The decelerator shell connection；The gear set includes the gear of number corresponding with the submersible motor, the submersible motor
Rotor is connect with the gear, and the gear is connect by the outer toothing with the gear.
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| CN111577143A (en) * | 2020-04-27 | 2020-08-25 | 湖南创远高新机械有限责任公司 | Hydraulic system of re-expanding cutter head and control method thereof |
| CN111577143B (en) * | 2020-04-27 | 2021-11-16 | 湖南创远高新机械有限责任公司 | Hydraulic system of re-expanding cutter head and control method thereof |
| CN111502668B (en) * | 2020-04-27 | 2022-04-12 | 湖南创远高新机械有限责任公司 | Re-expanding cutter head and control method thereof |
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