CN210622708U - Two-stage power hole expanding drilling tool - Google Patents
Two-stage power hole expanding drilling tool Download PDFInfo
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- CN210622708U CN210622708U CN201921459388.6U CN201921459388U CN210622708U CN 210622708 U CN210622708 U CN 210622708U CN 201921459388 U CN201921459388 U CN 201921459388U CN 210622708 U CN210622708 U CN 210622708U
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- cutter head
- screw motor
- speed reducer
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- reducer
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- 238000005553 drilling Methods 0.000 title claims abstract description 47
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 76
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 238000012856 packing Methods 0.000 claims description 43
- 210000004907 gland Anatomy 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims 8
- 230000000750 progressive effect Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 239000000945 filler Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses a doublestage power reaming drilling tool relates to horizontal directional drilling technical field, include: the screw motor assembly comprises a screw motor shell, a screw motor and a transmission shaft, and the speed reducer comprises a speed reducer shell, a gear set, a gear shaft, a first bearing set, an output spline sleeve and a second bearing set. The one-level cutter head assembly and the second-level cutter head assembly are adopted, the one-level cutter head assembly and the second-level cutter head assembly are respectively used as power sources through the screw motor assembly and the submersible motor assembly, the drilling tool is enabled to improve the reaming efficiency through the double power sources, the diameter of the single reaming of the double cutter head assembly is enlarged, the construction time is shortened, and the construction cost is saved. Therefore, the technical problems that in the prior art, in the process of directional drilling of water, the diameter of single reaming is small and multiple reaming needs to be performed to reach the expected borehole diameter due to the limitation of the torque of a drilling machine.
Description
Technical Field
The utility model relates to a horizontal directional drilling technical field especially relates to a doublestage power reaming drilling tool.
Background
The horizontal directional drilling technology is a trenchless construction technology with rapid development, advanced technology and wide application. Under the construction premise that the construction is not suitable for excavation, such as river crossing, building crossing and the like, the horizontal directional drilling technology plays a very important role, provides convenience for pipeline laying or cable laying across rivers, buildings, reduces the construction difficulty and shortens the construction period. At present, in the process of directional drilling of water, the diameter of single reaming is small due to the limitation of torque of a drilling machine, and the reaming needs to be carried out for many times to reach the expected borehole diameter. And, when the reaming diameter is too large, a powerful drilling machine needs to be replaced.
Therefore, the technical problems that the diameter of single hole expansion is small and the hole expansion needs to be performed for many times to reach the expected hole diameter in the water directional drilling process due to the limitation of the torque of a drilling machine exist in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model provides a doublestage power reaming drilling tool for solve among the prior art at water directional drilling in-process, receive rig torque limitation, single underreamed diameter is less, will reach anticipated well diameter, need experience a lot of underreamed technical problem.
The embodiment of the utility model provides a doublestage power reaming drilling tool, include: the screw motor assembly is connected with the first-stage cutter head assembly, the speed reducer is arranged on the periphery of the screw motor assembly and is connected with the screw motor assembly, and the submersible motor assembly is connected with the second-stage cutter head assembly through the speed reducer; wherein the content of the first and second substances,
the screw motor assembly comprises a screw motor shell, a screw motor and a transmission shaft, wherein two ends of the transmission shaft are respectively connected with a rotor of the screw motor and the first-stage cutter head assembly;
the speed reducer comprises a speed reducer shell, a gear set, a gear shaft, a first bearing set, an output spline sleeve and a second bearing set, wherein an outer tooth structure matched with the gear set and an outer spline structure matched with the output spline sleeve are respectively arranged at two ends of the gear shaft, the gear set is rotationally connected with the submersible motor assembly, two ends of the gear shaft are respectively connected with the gear set through the outer tooth structure and connected with the output spline sleeve through the outer spline structure, the output end of the output spline sleeve is connected with a second-stage cutter head assembly, the gear shaft is respectively connected with the speed reducer shell through the first bearing set and connected with the screw motor shell through the second bearing set, and the screw motor shell is fixedly connected with the speed reducer shell.
Preferably, the speed reducer further comprises a speed reducer end cover, an end cover sealing filler and a first filler pressing cover, the speed reducer end cover is connected with the speed reducer shell, and the first filler pressing cover is used for pressing the end cover sealing filler between the speed reducer end cover and the outer wall of the output spline housing.
Preferably, the speed reducer further comprises a packing inner bushing, a second packing gland, an inner bushing sealing packing, and a gland nut. The packing inner bushing, the second packing gland and the inner bushing packing are all arranged between the screw motor shell and the gear shaft, and the compression nut is used for extruding the inner bushing packing between the packing inner bushing and the second packing gland.
Preferably, the first bearing group is one or more tapered roller bearings, and the gear shaft is connected with the reducer casing through the tapered roller bearings.
Preferably, the number of the tapered roller bearings is two, and the tapered roller bearings are symmetrically arranged between the reducer casing and the gear shaft.
Preferably, the second bearing set is one or more needle bearings, and the gear shaft is connected with the screw motor housing through the needle bearings.
Preferably, the first-stage cutter head assembly comprises a first-stage cutter head, one or more first cone supports and first cones with the number corresponding to that of the first cone supports, the output end of the output spline sleeve is connected with the first-stage cutter head, and the first cones are connected with the first-stage cutter head through the first cone supports.
Preferably, the secondary cutter head assembly comprises a secondary cutter head, one or more second cutter holders and second cutters corresponding to the second cutter holders in number, the output end of the output spline sleeve is connected with the secondary cutter head, and the second cutters are connected with the secondary cutter head through the second cutter holders.
Preferably, the submersible motor assembly further comprises a centralizer assembly, and the centralizer assembly is connected with the speed reducer and/or the submersible motor assembly.
Preferably, the submersible motor assembly comprises a mounting rack and one or more submersible motors, and the housings of the submersible motors are connected with the screw motor housing and/or the speed reducer housing through the mounting rack; the gear set comprises gears with the number corresponding to that of the submersible motors, rotors of the submersible motors are connected with the gears, and the gears are connected with the gears through external tooth structures.
To sum up, the utility model provides a doublestage power reaming drilling tool relates to horizontal directional drilling technical field, include: the screw motor assembly is connected with the first-stage cutter head assembly, the speed reducer is arranged on the periphery of the screw motor assembly and is connected with the screw motor assembly, and the submersible motor assembly is connected with the second-stage cutter head assembly through the speed reducer; the screw motor assembly comprises a screw motor shell, a screw motor and a transmission shaft, wherein two ends of the transmission shaft are respectively connected with a rotor of the screw motor and the first-stage cutter head assembly; the speed reducer comprises a speed reducer shell, a gear set, a gear shaft, a first bearing set, an output spline sleeve and a second bearing set, wherein an outer tooth structure matched with the gear set and an outer spline structure matched with the output spline sleeve are respectively arranged at two ends of the gear shaft, the gear set is rotationally connected with the submersible motor assembly, two ends of the gear shaft are respectively connected with the gear set through the outer tooth structure and connected with the output spline sleeve through the outer spline structure, the output end of the output spline sleeve is connected with a second-stage cutter head assembly, the gear shaft is respectively connected with the speed reducer shell through the first bearing set and connected with the screw motor shell through the second bearing set, and the screw motor shell is fixedly connected with the speed reducer shell. In this embodiment, one-level cutter disc assembly and second grade cutter disc assembly have been adopted, and one-level cutter disc assembly and second grade cutter disc assembly provide the power supply by screw motor subassembly and oily motor element respectively, and double dynamical source makes the drilling tool promote reaming efficiency, and double cutter disc assembly single reaming diameter grow has shortened the time of construction, has practiced thrift construction cost. When the tool bit is implemented, the rotation of the first-stage cutter head assembly and the rotation of the second-stage cutter head assembly are opposite, and the rotation directions are opposite, so that part of the reactive torque of the two cutter head assemblies in the drilling process can be counteracted, and the tool bit plays a good role in balancing the reactive torque of the whole drilling tool. Therefore, the technical problems that in the prior art, in the process of directional drilling of water, the diameter of single reaming is small and multiple reaming needs to be performed to reach the expected borehole diameter due to the limitation of the torque of a drilling machine.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a perspective view of a dual-stage power reamer according to an embodiment of the present invention;
fig. 2 is a sectional view of a dual-stage power reamer tool according to an embodiment of the present invention;
fig. 3 is a partial enlarged view of a dual-stage power reamer according to an embodiment of the present invention.
Icon: 20-a two-stage power hole expanding drill; 21-a screw motor assembly; 2-a submersible motor assembly; 2, a speed reducer; 17-a primary cutter head assembly; 16-a secondary cutterhead assembly; 211-screw motor housing; 212-screw motor; 213-a drive shaft; 4-the reducer housing; 5-gear set; 6-gear shaft; 7-a first bearing set; 11-output spline housing; 12-a second bearing set; 8-reducer end covers; 9-end cap seal packing; 10-a first packing gland; 13-a filler inner liner; 14-a second packing gland; 30-inner liner sealing packing; 15-a compression nut; 41-first-stage cutter head; 18-a first cone carrier; 19-a first cone; 42-a secondary cutter head; 28-a second cone carrier; 29-a second cone; 1-a centralizer assembly; and 3, mounting the frame.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Referring to fig. 1 to fig. 3, a dual-stage power reamer 20 according to an embodiment of the present invention includes: the submersible motor assembly 2 is connected with the second-stage cutter head assembly 16 through the speed reducer 2; wherein the content of the first and second substances,
the screw motor assembly 21 comprises a screw motor housing 211, a screw motor 212 and a transmission shaft 213, two ends of the transmission shaft 213 are respectively connected with a rotor of the screw motor 212 and the first-stage cutter head assembly 17, the transmission shaft 213 is arranged in the screw motor housing 211 and is connected with the screw motor housing 211, and the screw motor housing 211 is connected with the speed reducer 2;
the speed reducer 2 comprises a speed reducer shell 4, a gear set 5, a gear shaft 6, a first bearing group 7, an output spline sleeve 11 and a second bearing group 12, two ends of the gear shaft 6 are respectively provided with an external tooth structure matched with the gear set 5 and an external spline structure matched with the output spline sleeve 11, the gear set 5 is rotationally connected with the submersible motor assembly 2, two ends of the gear shaft 6 are respectively connected with the gear set 5 through the external tooth structure and connected with the output spline sleeve 11 through the external spline structure, an output end of the output spline sleeve 11 is connected with a second-stage cutter head assembly 16, the gear shaft 6 is respectively connected with the speed reducer shell 4 through the first bearing group 7 and connected with a screw motor shell 211 through the second bearing group 12, and the screw motor shell 211 is fixedly connected with the speed reducer shell 4.
In specific implementation, the screw motor 212 is a first power source, the screw motor 212 provides a rotation speed and a torque, two ends of the transmission shaft 213 are respectively connected with the rotor of the screw motor 212 and the first-stage cutter head assembly 17, and the rotation speed and the torque are transmitted to the first-stage cutter head assembly 17 through the transmission shaft 213 arranged in the screw motor housing 211. In particular, during use, the power of the screw motor 212 is derived from high pressure drilling fluid, which flows through the gap between the stator and rotor of the screw motor 212, thereby generating a torque and a rotational speed. The submersible motor assembly 2 is a second power source and transmits the rotating speed and the torque to the secondary cutterhead assembly 16 through the speed reducer 2. The output torque of the submersible motor assembly 2 is transmitted to a gear shaft 6 by a gear set 5, and the gear shaft 6 transmits power to a secondary cutter head assembly 16. It can be seen that the primary cutter head assembly 17 and the secondary cutter head assembly 16 are respectively responsible for reaming and cutting in two annular regions with different diameters, and different power sources are respectively selected for the primary cutter head assembly 17 and the secondary cutter head assembly 16. The first-stage cutter head assembly 17 and the second-stage cutter head assembly 16 can rotate fast to cut rocks, holes with larger diameters can be expanded at one time under the condition that the power of the drilling machine is constant, the reaming period is shortened, and the construction cost is reduced.
In the embodiment, a primary cutter head assembly 17 and a secondary cutter head assembly 16 are adopted, and the primary cutter head assembly 17 and the secondary cutter head assembly 16 are respectively provided with power sources by a screw motor assembly 21 and a submersible motor assembly 2, so that the diameter of a single reaming is increased, and the drilling tool has improved reaming efficiency by virtue of the double power sources; when the drilling tool is implemented, the rotation of the first-stage cutter head assembly 17 and the rotation of the second-stage cutter head assembly 16 are opposite, and the rotation directions are opposite, so that the reaction torque of the two cutter heads can be partially offset in the drilling process, and the balance of the reaction torque of the whole drilling tool is well exerted; meanwhile, the construction time is shortened, the construction cost is saved, and the application range is wider. Therefore, the technical problems that in the prior art, in the process of directional drilling of water, the diameter of single reaming is small and multiple reaming needs to be performed to reach the expected borehole diameter due to the limitation of the torque of a drilling machine.
Preferably, the speed reducer 2 further comprises a speed reducer end cover 8, an end cover sealing packing 9, and a first packing gland 10, wherein the speed reducer end cover 8 is connected with the speed reducer casing 4, and the first packing gland 10 is used for squeezing the end cover sealing packing 9 between the speed reducer end cover 8 and the outer wall of the output spline housing 11.
During specific implementation, the filler is mainly used for dynamic sealing between the reducer end cover 8 and the output spline housing 11. The first packing gland 10 is used for compressing packing at the position of the reducer end cover 8 and the output spline housing 11. The secondary cutter head assembly 16 and the output spline housing 11 can be connected through bolts for transmission, and the speed reducer shell 4 is fixedly connected with the screw motor shell 211 through the speed reducer end cover 8.
Preferably, the speed reducer 2 further includes a packing inner bushing 13, a second packing gland 14, an inner bushing seal packing 30, and a gland nut 15. The packing inner bushing 13, the second packing gland 14, and the inner bushing seal packing 30 are disposed between the screw motor housing 211 and the gear shaft 6, and the gland nut 15 is used to squeeze the inner bushing seal packing 30 between the packing inner bushing 13 and the second packing gland 14.
In specific implementation, the packing is mainly used for dynamic sealing between the gear shaft 6 and the screw motor housing 211, and the compression nut 15 is used for compressing the packing between the gear shaft 6 and the screw motor housing 211.
Preferably, the first bearing set 7 is one or more tapered roller bearings, and the gear shaft 6 is connected with the reducer housing 4 through the tapered roller bearings.
In specific implementation, the tapered roller bearing is mainly used for centering the gear shaft 6 and bearing axial force.
Preferably, the tapered roller bearings are two and symmetrically arranged between the reducer housing 4 and the gear shaft 6.
During specific implementation, the gear shaft 6 is positioned through two symmetrically-installed tapered roller bearings, so that the gear shaft 6 is more stable.
Preferably, the second bearing set 12 is one or more needle bearings, by which the gear shaft 6 is connected with the screw motor housing 211.
In specific implementation, the second bearing is mainly arranged for bearing extrusion between the gear shaft 6 and the reducer shell 4, and meanwhile, resistance of the gear shaft 6 in rotation is reduced.
Preferably, the primary cutter disc assembly 17 comprises a primary cutter disc 41, one or more first cutter holders 18 and a number of first cutters 19 corresponding to the number of the first cutter holders 18, the output end of the output spline housing 11 is connected with the primary cutter disc 41, and the first cutters 19 are connected with the primary cutter disc 41 through the first cutter holders 18.
In specific implementation, the diameter of the first-stage cutter disc 41 can be smaller than that of the second-stage cutter disc 42, and the first-stage cutter disc 41 is disc-shaped; one or more first cone brackets 18 are arranged on the end face of the first-stage cutter disc 41 opposite to the direction away from the speed reducer 2, each first-stage cone bracket is connected with a first cone 19, and the first cone 19 cuts rock.
Preferably, the secondary cutter disc assembly 16 comprises a secondary cutter disc 42, one or more second cutter holders 28 and a corresponding number of second cutters 29 to the second cutter holders 28, the output end of the output spline housing 11 is connected with the secondary cutter disc 42, and the second cutters 29 are connected with the secondary cutter disc 42 through the second cutter holders 28.
In specific implementation, the diameter of the secondary cutter disc 42 may be larger than that of the primary cutter disc 41, and the secondary cutter disc 42 may also be a disc; one or more second cone supports 28 are arranged on the end face of the secondary cutter disc 42 opposite to the direction far away from the speed reducer 2, each secondary cone support is connected with a second cone 29, and the first cone 19 cuts the rock. It will be appreciated that first cone support 18 and second cone support 28 may be of the same construction and material, and that first cone 19 and second cone 29 may be of the same construction and material.
Preferably, the device also comprises a centralizer assembly 1, wherein the centralizer assembly 1 is connected with a speed reducer 2 and/or a submersible motor assembly 2.
In specific implementation, the centralizer assembly 1 ensures that the two-stage dynamic reaming drilling tool 20 always cuts in the middle of a borehole, and ensures that the two-stage dynamic reaming drilling tool 20 drills according to a preset track. The centralizer assembly 1 can comprise two or more centralizers, and the centralizers are respectively arranged on the periphery of the speed reducer shell 4 of the double-stage power reamer tool 20 and/or the periphery of the submersible motor assembly 2; for example, when there are two centralizer assemblies 1, the two centralizers arranged in front of and behind the dual-stage power reamer 20 ensure that the dual-stage power reamer 20 is always in the middle of the borehole for rotary cutting, and unnecessary friction between the reducer housing 4 and the submersible motor assembly 2 and the borehole wall is avoided.
Preferably, the submersible motor assembly 2 comprises a mounting frame 3 and one or more submersible motors, and the housings of the submersible motors are connected with the screw motor housing 211 and/or the speed reducer housing 4 through the mounting frame 3; the gear set 5 comprises gears with the number corresponding to that of the submersible motors, rotors of the submersible motors are connected with the gears, and the gears are connected with the gears through external tooth structures.
In specific implementation, the screw motor housing 211 and the submersible motor assembly 2 are fixedly connected through a motor flange. The number of the submersible motors can be four, gears connected with the submersible motors do autorotation motion relative to the gear shaft 6, the gears are matched with external tooth structure teeth of the gear shaft 6 to transmit torque to the gear shaft 6, and the gear shaft 6 transmits power to the secondary cutter head 42.
To sum up, the utility model provides a doublestage power reaming drilling tool relates to horizontal directional drilling technical field, include: the screw motor assembly is connected with the first-stage cutter head assembly, the speed reducer is arranged on the periphery of the screw motor assembly and is connected with the screw motor assembly, and the submersible motor assembly is connected with the second-stage cutter head assembly through the speed reducer; the screw motor assembly comprises a screw motor shell, a screw motor and a transmission shaft, wherein two ends of the transmission shaft are respectively connected with a rotor of the screw motor and the first-stage cutter head assembly; the speed reducer comprises a speed reducer shell, a gear set, a gear shaft, a first bearing set, an output spline sleeve and a second bearing set, wherein an outer tooth structure matched with the gear set and an outer spline structure matched with the output spline sleeve are respectively arranged at two ends of the gear shaft, the gear set is rotationally connected with the submersible motor assembly, two ends of the gear shaft are respectively connected with the gear set through the outer tooth structure and connected with the output spline sleeve through the outer spline structure, the output end of the output spline sleeve is connected with a second-stage cutter head assembly, the gear shaft is respectively connected with the speed reducer shell through the first bearing set and connected with the screw motor shell through the second bearing set, and the screw motor shell is fixedly connected with the speed reducer shell. In the embodiment, a primary cutter head assembly and a secondary cutter head assembly are adopted, and the primary cutter head assembly and the secondary cutter head assembly are respectively provided with power sources by a screw motor assembly and a submersible motor assembly, so that the diameter of single reaming is increased, and the drilling tool improves the reaming efficiency by the double power sources; when the drilling tool is implemented, the rotation of the first-stage cutter head assembly and the rotation of the second-stage cutter head assembly are opposite, and the rotation directions are opposite, so that the reaction torque of the two cutter heads can be partially offset in the drilling process, and the reaction torque balance of the whole drilling tool is well exerted; meanwhile, the construction time is shortened, the construction cost is saved, and the application range is wider. Therefore, the technical problems that in the prior art, in the process of directional drilling of water, the diameter of single reaming is small and multiple reaming needs to be performed to reach the expected borehole diameter due to the limitation of the torque of a drilling machine.
In short, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A dual stage power reamer tool comprising: the screw motor component is connected with the first-stage cutter head component, the speed reducer is arranged on the periphery of the screw motor component and is connected with the screw motor component, and the submersible motor component is connected with the second-stage cutter head component through the speed reducer; wherein the content of the first and second substances,
the screw motor assembly comprises a screw motor shell, a screw motor and a transmission shaft, two ends of the transmission shaft are respectively connected with a rotor of the screw motor and the first-stage cutter head assembly, the transmission shaft is arranged in the screw motor shell and is connected with the screw motor shell, and the screw motor shell is connected with the speed reducer;
the speed reducer comprises a speed reducer shell, a gear set, a gear shaft, a first bearing set, an output spline sleeve and a second bearing set, wherein an external tooth structure matched with the gear set and an external spline structure matched with the output spline sleeve are respectively arranged at two ends of the gear shaft, the gear set is rotationally connected with the submersible motor assembly, two ends of the gear shaft are respectively connected with the gear set through the external tooth structure and connected with the output spline sleeve through the external spline structure, the output end of the output spline sleeve is connected with the second-stage cutter head assembly, the gear shaft is respectively connected with the speed reducer shell through the first bearing set and connected with the screw motor shell through the second bearing set, and the screw motor shell is fixedly connected with the speed reducer shell.
2. The dual stage power reamer drilling tool of claim 1, wherein the reducer further comprises a reducer end cap, an end cap seal packing, and a first packing gland, the reducer end cap being connected with the reducer housing, the first packing gland being configured to squeeze the end cap seal packing between the reducer end cap and the outer wall of the output spline housing.
3. The dual stage power reamer tool of claim 1, wherein the reducer further comprises an inner packing sleeve, a second packing gland, an inner sleeve sealing packing, and a compression nut. The packing inner bushing, the second packing gland and the inner bushing packing are arranged between the screw motor shell and the gear shaft, and the compression nut is used for extruding the inner bushing packing between the packing inner bushing and the second packing gland.
4. The dual stage power reamer tool of any one of claims 1 to 3, wherein the first bearing set is one or more tapered roller bearings, and the gear shaft is coupled to the reducer housing through the tapered roller bearings.
5. The dual stage power reamer tool of claim 4, wherein the tapered roller bearings are two and are symmetrically disposed between the reducer housing and the gear shaft.
6. The dual stage power reamer tool of claim 4, wherein the second bearing set is one or more needle bearings, the gear shaft being coupled to the progressive cavity motor housing through the needle bearings.
7. The dual-stage power reaming drilling tool according to claim 4, wherein the first-stage cutter head assembly comprises a first-stage cutter head, one or more first cone supports and a first cone with the number corresponding to that of the first cone supports, the output end of the output spline housing is connected with the first-stage cutter head, and the first cone is connected with the first-stage cutter head through the first cone supports.
8. The dual-stage power reaming drilling tool according to claim 4, wherein the secondary cutter head assembly comprises a secondary cutter head, one or more second roller cone supports and a corresponding number of second roller cones to the second roller cone supports, the output end of the output spline housing is connected with the secondary cutter head, and the second roller cones are connected with the secondary cutter head through the second roller cone supports.
9. The dual stage powered reamer tool of claim 4, further comprising a centralizer assembly coupled to the reducer and/or the submersible motor assembly.
10. The dual stage powered reamer tool of claim 4, wherein the submersible motor assembly comprises a mounting bracket and one or more submersible motors, the submersible motor housing being connected to the screw motor housing and/or the reducer housing via the mounting bracket; the gear set comprises gears with the number corresponding to that of the submersible motors, rotors of the submersible motors are connected with the gears, and the gears are connected with the gears through the external tooth structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921459388.6U CN210622708U (en) | 2019-09-03 | 2019-09-03 | Two-stage power hole expanding drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921459388.6U CN210622708U (en) | 2019-09-03 | 2019-09-03 | Two-stage power hole expanding drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210622708U true CN210622708U (en) | 2020-05-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921459388.6U Withdrawn - After Issue CN210622708U (en) | 2019-09-03 | 2019-09-03 | Two-stage power hole expanding drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210622708U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439466A (en) * | 2019-09-03 | 2019-11-12 | 重庆科技学院 | A kind of stage power borehole-enlarging drilling tool |
-
2019
- 2019-09-03 CN CN201921459388.6U patent/CN210622708U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439466A (en) * | 2019-09-03 | 2019-11-12 | 重庆科技学院 | A kind of stage power borehole-enlarging drilling tool |
| CN110439466B (en) * | 2019-09-03 | 2024-04-23 | 重庆科技学院 | Two-stage power reaming drilling tool |
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