CN108756752B - Casing device of multifunctional drilling machine and multifunctional drilling machine - Google Patents
Casing device of multifunctional drilling machine and multifunctional drilling machine Download PDFInfo
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- CN108756752B CN108756752B CN201810416631.XA CN201810416631A CN108756752B CN 108756752 B CN108756752 B CN 108756752B CN 201810416631 A CN201810416631 A CN 201810416631A CN 108756752 B CN108756752 B CN 108756752B
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- water
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- cleaning
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- 238000005553 drilling Methods 0.000 title claims abstract description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 205
- 238000006243 chemical reaction Methods 0.000 claims abstract description 107
- 238000004140 cleaning Methods 0.000 claims abstract description 56
- 238000004891 communication Methods 0.000 claims description 40
- 239000012530 fluid Substances 0.000 claims description 36
- 238000007789 sealing Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 abstract description 7
- 238000005406 washing Methods 0.000 description 20
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 230000009467 reduction Effects 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012876 topography Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
Landscapes
- 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 present disclosure relates to a casing device of a multifunctional drilling machine and a multifunctional drilling machine, the casing device comprising a drill rod assembly and a cleaning changer, the drill rod assembly comprising an outer drill rod having a second hollow cavity and an inner drill rod within the second hollow cavity and having a first hollow cavity, an outer surface of the inner drill rod forming an annular cavity with a cavity wall of the second hollow cavity; the cleaning converter comprises a water conversion inner core and a cleaning conversion sleeve sleeved outside the water conversion inner core, the water conversion inner core is detachably connected with the drill rod assembly, the water conversion inner core is provided with a water inlet channel communicated with the first hollow cavity and a water outlet channel communicated with the annular cavity, and the cleaning conversion sleeve is provided with a water inlet pipe interface communicated with the water inlet channel and a water outlet pipe interface communicated with the water outlet channel. The casing device of the multifunctional drilling machine and the multifunctional drilling machine can rapidly drill, can convey rescue materials for trapped people buried below a collapse body, can form good support, and avoid secondary disasters.
Description
Technical Field
The present disclosure relates to the field of tunnel engineering machinery, and in particular, to a casing device of a multifunctional drilling machine and a multifunctional drilling machine.
Background
The accident hidden trouble and the safety risk are interweaved and overlapped in the field of tunnel construction, and the accident caused by the tunnel collapse due to geological disasters and the like occurs, so that the casualties caused by the accident hidden trouble and the safety risk are the accident types with the highest hazard degree, the largest economic loss and the most extensive social influence in various production safety accidents. After a tunnel collapse accident occurs, a manual small pilot pit mode is often adopted in the prior art to rescue, factors such as collapse length of a tunnel, length of a non-through section of the tunnel, initial collapse points, collapse direction, damage degree of primary support of the collapse section, topography and topography conditions of the collapse section, rescue conditions and the like are considered in determining the plane position of the small pilot pit, the manual mode is adopted to excavate, the excavation progress is slow, the rescue efficiency is low, air, water and other rescue materials cannot be timely conveyed to trapped people in the rescue process, and in addition, secondary disasters are easy to cause, so that great potential safety hazards are brought to rescue workers.
Disclosure of Invention
The utility model provides a multi-functional drilling machine's sleeve pipe device and multi-functional drilling machine, this multi-functional drilling machine's sleeve pipe device and multi-functional drilling machine can carry out drilling operation fast, and can be for the stranded personnel transport rescue materials of being buried in collapse body below to can form good support, avoid the emergence of secondary disaster.
In order to achieve the above object, a casing device of a multifunctional drilling machine is provided, the casing device comprising a drill rod assembly and a cleaning switch. Wherein, the drilling rod subassembly includes: an inner drill rod having a first hollow cavity, a distal end of the inner drill rod being configured as an inner drill bit, the first hollow cavity communicating with the outside at the inner drill bit; the outer drill rod is provided with a second hollow cavity, the far end of the outer drill rod is configured as an outer drill bit, the second hollow cavity is communicated with the outside at the outer drill bit, the inner drill rod is arranged in the second hollow cavity, and an annular cavity is formed between the outer surface of the inner drill rod and the cavity wall of the second hollow cavity. The cleaning converter includes: a water transfer core having first and second axially opposed connection ends, the first connection end for connection with a power plant, the second connection end being detachably connected to both the proximal end of the outer drill rod and the proximal end of the inner drill rod, the water transfer core being provided with a water inlet passage in fluid communication with the first hollow cavity and a water outlet passage in fluid communication with the annular cavity; the cleaning and converting sleeve is sleeved on the outer side of the water conversion inner core and is provided with a water inlet pipe interface in fluid communication with the water inlet channel and a water outlet pipe interface in fluid communication with the water outlet channel, and the central axes of the water inlet pipe interface and the water outlet pipe interface extend along the radial direction of the cleaning and converting sleeve.
Optionally, the inner drill rod includes a first joint section, a first extension section and a first working section that are detachably connected in sequence, the first joint section is detachably connected to the second connection end, and the first working section includes the inner drill bit.
Optionally, the inner drill rod comprises a plurality of the first extension sections.
Optionally, the first joint section and the first extension section are both provided with a first auxiliary dismounting portion on the outer surface.
Optionally, the first auxiliary dismounting portion is configured as a plane.
Optionally, the outer drill rod includes a second joint section, a second extension section and a second working section that are detachably connected in sequence, the second joint section being detachably connected to the second connection end, the second working section including the outer drill bit.
Optionally, the outer drill rod comprises a plurality of the second extension sections.
Optionally, the outer surface of the second joint section is provided with a second auxiliary dismounting portion.
Optionally, the second auxiliary dismounting portion is configured as a groove.
Optionally, a water supply channel is provided on the inner surface of the washing conversion sleeve and/or the outer surface of the water conversion core, which water supply channel is in fluid communication with the water inlet pipe interface and the water inlet channel.
Optionally, the water supply channel is provided on an inner surface of the washing conversion sleeve.
Alternatively, the water supply channel is configured as an annular groove.
Optionally, the cleaning conversion sleeve is provided with two water inlet pipe interfaces.
Optionally, an included angle of 90 ° is formed between the axes of the two water inlet pipe interfaces.
Optionally, a first sealing member is arranged between the cleaning conversion sleeve and the water conversion inner core along the axial direction of the sleeve device at two sides of the water supply channel.
Optionally, the pipe diameter of the drain pipe interface is larger than the pipe diameter of the water inlet pipe interface.
Optionally, the water inlet channel comprises a radial segment extending in a radial direction of the water conversion core and an axial segment extending in an axial direction of the water conversion core, the radial segment being in fluid communication with the axial segment, the radial segment being in fluid communication with the water supply channel, the axial segment being in fluid communication with the first hollow cavity.
Alternatively, the radial segment is configured as a through hole.
Optionally, the radial segment is provided with a plurality.
Optionally, a drain channel is provided on the inner surface of the washing conversion sleeve and/or the outer surface of the water conversion core, which drain channel is in fluid communication with the drain interface and the water outlet channel.
Optionally, the drain channel is provided on an inner surface of the washing conversion sleeve.
Alternatively, the drain channel is configured as an annular groove.
Optionally, a second sealing member is arranged between the cleaning conversion sleeve and the water conversion inner core along the axial direction of the sleeve device at two sides of the drainage channel.
Optionally, the water outlet channel is configured as a through hole extending in a radial direction of the sleeve device;
optionally, a plurality of water outlet channels are provided.
Optionally, the second connecting end is provided with a step hole, the step hole comprises an expanded diameter section and a reduced diameter section, the inner drill rod is detachably connected with the reduced diameter section, and the outer drill rod is detachably connected with the expanded diameter section.
Optionally, a bushing is disposed between the end of the cleaning conversion sleeve corresponding to the second connection end and the second connection end.
Optionally, a bushing is disposed between the end of the cleaning conversion sleeve corresponding to the first connection end and the first connection end.
Optionally, an axial limiting member is disposed between the first connection end and the cleaning and converting sleeve to limit an axial position of the water converting inner core relative to the cleaning and converting sleeve.
Optionally, a limiting groove is formed in the outer surface of the first connecting end, and the axial limiting piece is fixed to the cleaning conversion sleeve and is matched with the limiting groove.
Optionally, the axial limiter comprises a main body and cushioning pads located on both sides of the main body in an axial direction of the sleeve device.
On the basis of the technical scheme, the disclosure further provides a multifunctional drilling machine, which comprises a power device, and the multifunctional drilling machine further comprises the sleeve device in the technical scheme, wherein the power device is in transmission connection with the first connecting end.
Through the technical scheme, the sleeve device of the multifunctional drilling machine can be used for rescue work in a tunnel collapse door closing accident, an inner drill rod and an outer drill rod in the sleeve device can drill simultaneously to further realize rapid operation, a collapse body is drilled through at the fastest speed, the outer drill rod is left in a hole to form a through passage, audio and video communication can be established with trapped people at the first time, rescue materials are conveyed to the trapped people, and meanwhile, the outer drill rod can form good support in the hole to avoid secondary disasters. In the drilling operation process of the drill rod assembly, water provided by an external water source for cleaning the water inlet pipe interface connection on the conversion sleeve sequentially passes through the water inlet channel in the water conversion inner core and the first hollow cavity of the inner drill rod to reach the drilling position, so that water flushing is provided in the drilling process, the functions of lubrication, drag reduction and abrasion reduction are achieved, the working efficiency of the multifunctional drilling machine is improved, therefore, part of flushed muddy water can flow away along a collapse body, and the other part of muddy water can flow upwards along the annular cavity and flow to the water outlet pipe interface along the water outlet channel under the action of water pressure to be discharged. The multifunctional drilling machine comprising the casing device has the same technical effects as the casing device, and in order to avoid unnecessary repetition, a description is omitted herein.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
FIG. 1 is an exploded view of a casing assembly of a multi-function drilling rig provided in accordance with an embodiment of the present disclosure;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 3 is a sectional view taken along line B-B of fig. 1.
Description of the reference numerals
The inner drill rod, 10-first hollow cavity, 11-inner drill bit, 12-first joint section, 13-first extension section, 14-first working section, 141-first working section connecting portion, 15-first auxiliary dismounting portion, 2-outer drill rod, 20-second hollow cavity, 201-annular cavity, 21-outer drill bit, 22-second joint section, 23-second extension section, 24-second working section, 241-second working section connecting portion, 25-second auxiliary dismounting portion, 3-cleaning conversion sleeve, 31-water inlet pipe interface, 32-drain pipe interface, 33-water supply channel, 34-drain channel, 4-water conversion core, 41-first connecting end, 42-second connecting end, 43-water inlet channel, 431-radial section, 432-axial section, 44-water outlet channel, 45-step hole, 451-diameter expansion section, 452-diameter reduction section, 46-limit groove, 5-axial limit piece, 51-main body, 52-6-first seal, 7-second seal cushion pad, 8-second seal liner.
Detailed Description
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
The terms "first," "second," and the like, as used in this disclosure, are used for distinguishing one element from another and not necessarily for order or importance. The terms "proximal" and "distal" as used in this disclosure are defined based on the direction of power transmission, from proximal to distal. The orientation word "inner and outer" as used in this disclosure is relative to the contour of the respective component itself. Furthermore, the following description refers to the same elements throughout the several views.
According to an embodiment of the present disclosure, there is provided a casing device of a multifunctional drilling machine, which includes a drill rod assembly and a cleaning switch, as shown with reference to fig. 1 and 2, the drill rod assembly including an inner drill rod 1 and an outer drill rod 2, the inner drill rod 1 having a first hollow cavity 10, a distal end of the inner drill rod 1 being configured as an inner drill bit 11, the first hollow cavity 10 communicating with the outside at the inner drill bit 11; the outer drill rod 2 has a second hollow cavity 20, the distal end of the outer drill rod 2 is configured as an outer drill bit 21, the second hollow cavity 20 communicates with the outside at the outer drill bit 21, the inner drill rod 1 is disposed in the second hollow cavity 20, and an annular cavity 201 is formed between the outer surface of the inner drill rod 1 and the cavity wall of the second hollow cavity 20.
The cleaning switch comprises a water switch core 4 and a cleaning switch sleeve 3, the water switch core 4 is provided with a first connecting end 41 and a second connecting end 42 which are opposite along the axial direction, the first connecting end 41 is used for being connected with a power device, the second connecting end 42 is detachably connected with the proximal end of the outer drill rod 2 and the proximal end of the inner drill rod 1, the power device drives the water switch core 4, the inner drill rod 1 and the outer drill rod 2 to rotate and feed in the drilling process, and the water switch core 4 is provided with a water inlet channel 43 which is in fluid communication with the first hollow cavity 10 and a water outlet channel 44 which is in fluid communication with the annular cavity 201; the cleaning conversion sleeve 3 is sleeved on the outer side of the water conversion inner core 4, when the water conversion inner core 4 rotates along with the power device, the cleaning conversion sleeve 3 does not rotate along with the water conversion inner core 4, the cleaning conversion sleeve 3 is provided with a water inlet pipe interface 31 in fluid communication with a water inlet channel 43 and a water outlet pipe interface 32 in fluid communication with a water outlet channel 44, and central axes of the water inlet pipe interface 31 and the water outlet pipe interface 32 extend along the radial direction of the cleaning conversion sleeve 3.
Through the technical scheme, the sleeve device of the multifunctional drilling machine can be used for rescue work in a tunnel collapse door closing accident, the inner drill rod 1 and the outer drill rod 2 in the sleeve device can drill simultaneously to realize rapid operation, a collapse body is drilled through at the fastest speed, the outer drill rod 2 is left in a hole to form a through passage, audio and video communication can be established with trapped personnel at the first time, rescue materials are conveyed to the trapped personnel, and meanwhile, the outer drill rod 2 can form good support in the hole to avoid occurrence of secondary disasters. In the drilling operation process of the drill rod assembly, water provided by an external water source connected with the water inlet pipe interface 31 on the cleaning conversion sleeve 3 sequentially passes through the water inlet channel 43 of the water conversion inner core 4 and the first hollow cavity 10 of the inner drill rod 1 to reach a drilling position, so that water flushing is provided in the drilling process, the functions of lubrication, drag reduction and abrasion reduction are achieved, and the working efficiency of the multifunctional drilling machine is improved. As the drill pipe rotates during drilling, a portion of the flushed mud water will flow along the collapsed body, while another portion will flow under water pressure up the annular cavity 201 and along the water outlet channel 44 to the drain port 32 for drainage.
In the specific embodiments provided in the present disclosure, the inner drill rod 1 may be configured in any suitable manner. Alternatively, referring to fig. 1 and 3, the inner drill rod 1 includes a first joint section 12, a first extension section 13 and a first working section 14 which are detachably connected in sequence, the first joint section 12 is detachably connected to the second connection end 42, the first extension section 13 is detachably connected to the first joint section 12, the first working section 14 includes an inner drill bit 11 and a first working section connecting portion 141, the first working section 14 is detachably connected to the first extension section 13 through the first working section connecting portion 141, and in this disclosure, the connection manner between the components of the inner drill rod 1 includes, but is not limited to, threaded connection, so long as the connection manner that enables the detachable connection between the components of the inner drill rod 1 is all within the scope of the present disclosure.
Wherein, according to the requirement of operating mode, interior drilling rod 1 includes a plurality of first extension 13 to adjust the length of interior drilling rod 1 in order to adapt to different operating modes.
Wherein, in order to facilitate the installation and the disassembly of the inner drill rod 1, the first joint section 12, the first extension section 13 and the first working section 14 may be provided with a first auxiliary disassembly and assembly portion 15 on the outer surface to cooperate with a disassembly tool (such as a wrench or a special disassembly and assembly tool) to install and disassemble the inner drill rod 1.
Alternatively, referring to fig. 3, the first auxiliary dismounting portion 15 may be configured to be planar so as to increase the contact area of the dismounting tool with the inner drill rod 1 during the mounting and dismounting process, thereby reducing damage to the inner drill rod 1 while facilitating the operation.
In the particular embodiment provided in the present disclosure, the outer drill rod 2 may be configured in any suitable manner. Alternatively, referring to fig. 1, the outer drill rod 2 includes a second joint section 22, a second extension section 23 and a second working section 24 which are sequentially and detachably connected, the second joint section 22 is detachably connected to the second connection end 42, the second extension section 23 is detachably connected to the second joint section 22, the second working section 24 includes an outer drill bit 21 and a second working section connecting portion 241, the second working section 24 is detachably connected to the second extension section 23 through the second working section connecting portion 241, and in this disclosure, the connection manner between the components of the outer drill rod 2 includes, but is not limited to, threaded connection, so long as the connection manner that enables the detachable connection between the components of the outer drill rod 2 is all within the scope of the present disclosure.
Wherein, according to the requirement of operating mode, outer drilling rod 2 includes a plurality of second extension 23 to adjust the length of outer drilling rod 2 in order to adapt to different operating modes.
Wherein, after drilling through the collapsed body, the second joint section 22 is fixed by a disassembly and assembly tool (such as a wrench or a special disassembly and assembly tool), the power device drives the water conversion inner core 4 to reversely rotate, namely, the outer drill rod 2 is disassembled from the second connecting end 42 of the water conversion inner core 4, so that the outer drill rod 2 is left in the hole, the power device, the cleaning converter and the inner drill rod 1 are withdrawn, and in order to facilitate the disassembly and assembly tool to fix the second joint section 22, a second auxiliary disassembly and assembly part 25 is optionally arranged on the outer surface of the second joint section 22.
Optionally, the second auxiliary dismounting portion 25 is configured as a groove, so that the dismounting tool can better fix the second joint section 22 stationary during mounting and dismounting.
In the particular embodiments provided in the present disclosure, fluid communication between inlet tube interface 31 and inlet passage 43 may be achieved in any suitable configuration. Optionally, referring to fig. 2, the inner surface of the washing conversion sleeve 3 is provided with a water supply channel 33, which water supply channel 33 is in fluid communication with the water inlet pipe interface 31 and the water inlet channel 43. Of course, the water supply passage 33 may be provided on the outer surface of the water conversion core 4 or on both the inner surface of the washing conversion sleeve 3 and the outer surface of the water conversion core 4 according to actual circumstances. In this regard, the present disclosure is not particularly limited.
The cleaning and converting sleeve 3 is connected with an external water source, so that the drill rod cannot rotate along with the drill rod in the drilling operation process of the multifunctional drilling machine, and the drill rod is connected with the power device through the water converting inner core 4, that is, the water converting inner core 4 needs to rotate along with the drill rod, so that the water supply channel 33 is needed to ensure the fluid communication between the water inlet pipe interface 31 and the water inlet channel 43 in the process of relative rotation between the water converting inner core 4 and the cleaning and converting sleeve 3. Alternatively, the water supply channel 33 is configured as an annular groove, such that the water inlet channel 43 is always in fluid communication with the water supply channel 33 during rotation of the water switching core 4 relative to the washing switch sleeve 3. In the case of an external water source, the water supply channel 33 is always filled with water to ensure that the water entering the first hollow cavity 10 of the inner drill rod 1 through the water inlet channel 43 has sufficient water flow rate to provide water flushing for drilling operations.
Wherein, because the pipe diameter of inlet tube interface 31 can not exceed the pipe diameter of wasing conversion cover 3, will wash conversion cover 3 and be provided with a plurality of inlet tube interfaces, for example be provided with two inlet tube interfaces 31, can be suitable for two or more inlet tube interfaces 31 external water source simultaneously when needs to guarantee that the water washing has sufficient discharge.
Optionally, an included angle of 90 ° is formed between the axes of the two water inlet pipe interfaces 31, and when needed, different water inlet pipe interfaces 31 are selected to be connected with an external water source according to the relative positions of the water inlet pipe, the water outlet pipe and the cleaning conversion sleeve 3, and the water inlet pipe interfaces 31 which are not connected with the water inlet pipe are sealed to prevent water from leaking out.
Alternatively, since the relative rotation is required, there is a clearance fit between the water conversion core 4 and the washing conversion sleeve 3, i.e. a gap is provided between the water supply channel 33 and the water inlet channel 43, and in order to prevent water from flowing out of the gap between the water conversion core 4 and the washing conversion sleeve 3, a first sealing member 6 is provided between the washing conversion sleeve 3 and the water conversion core 4 on both sides of the water supply channel 33 in the axial direction of the sleeve device.
Alternatively, in order to ensure that the muddy water is smoothly discharged, the pipe diameter of the drain pipe joint 32 is set to be larger than the pipe diameter of the inlet pipe joint 31, considering that the muddy water after washing contains impurities such as silt.
In the particular embodiment provided in the present disclosure, the water inlet channel 43 may be configured in any suitable manner. Alternatively, referring to fig. 2, the water inlet channel 43 comprises a radial section 431 extending in the radial direction of the water conversion core 4 and an axial section 432 extending in the axial direction of the water conversion core 4, the radial section 431 being in fluid communication with the axial section 432, the radial section 431 being in fluid communication with the water supply channel 33, the axial section 432 being in fluid communication with the first hollow cavity 10.
Wherein the radial segment 431 is configured as a through hole such that one end of the radial segment 431 is in fluid communication with the axial segment 432 and the other end is in fluid communication with the water supply channel 33 during rotation of the water conversion core 4.
Optionally, in order to ensure sufficient water flow into the first hollow cavity 10, radial segments 431 are provided in plurality.
In the particular embodiments provided in the present disclosure, fluid communication between the drain interface 32 and the outlet passage 44 may be achieved in any suitable configuration. Optionally, referring to fig. 2, a drain channel 34 is provided on the inner surface of the washing shift collar 3, which drain channel 34 is in fluid communication with the drain interface 32 and the outlet channel 44. Of course, the drain passage 34 may be provided on the outer surface of the water conversion core 4 or on both the inner surface of the washing conversion sleeve 3 and the outer surface of the water conversion core 4, depending on the actual situation. In this regard, the present disclosure is not particularly limited.
Because the cleaning conversion sleeve 3 is connected with an external water source, the drill rod cannot rotate along with the drill rod in the drilling operation process of the multifunctional drilling machine, and the drill rod is connected with the power device through the water conversion inner core 4, that is, the water conversion inner core 4 needs to rotate along with the drill rod, so that in the process of relative rotation between the water conversion inner core 4 and the cleaning conversion sleeve 3, the drainage channel 34 is needed to ensure the fluid communication between the water outlet pipe interface 32 and the water outlet channel 44. Alternatively, the drain channel 34 is configured as an annular groove, such that the water outlet channel 44 is always in fluid communication with the drain channel 34 during rotation of the water transfer core 4 relative to the wash conversion sleeve 3, to ensure smooth draining of muddy water.
Alternatively, since there is a clearance fit between the water conversion core 4 and the washing conversion sleeve 3, i.e., a gap between the drain passage 34 and the water outlet passage 44, in order to prevent muddy water from flowing out of the gap between the water conversion core 4 and the washing conversion sleeve 3 to damage the washing converter, a second seal 7 is provided between the washing conversion sleeve 3 and the water conversion core 4 on both sides of the drain passage 34 in the axial direction of the sleeve device.
In the specific embodiments provided in the present disclosure, the water outlet channel 44 may be configured in any suitable manner. Alternatively, referring to fig. 2, the water outlet passage 44 is configured as a through hole extending in the radial direction of the sleeve device, so that both ends of the water outlet passage 44 can be in fluid communication with the water discharge passage 43 during rotation of the water conversion core 4.
Alternatively, in order to ensure timely and smooth discharge of muddy water, a plurality of water outlet passages 44 are provided.
In the particular embodiment provided in the present disclosure, the second connection end 42 may be in any suitable configuration to enable the detachable connection of the second connection end 42 with the proximal end of the inner drill rod 1 and the proximal end of the outer drill rod 2. Alternatively, referring to fig. 2, the second connecting end 42 is provided with a stepped hole 45 for connecting the drill rod assembly, the stepped hole 45 includes an expanded diameter section 451 and a reduced diameter section 452, in the embodiment of the present disclosure, an internal thread for matching with an external thread on the second joint section 22 is provided on the expanded diameter section 451, an internal thread for matching with an external thread on the first joint section 12 is provided on the reduced diameter section 452, the inner drill rod 1 is screwed with the reduced diameter section 452 through the first joint section 12, and the outer drill rod 2 is screwed with the expanded diameter section 451 through the second joint section 22, it should be noted that, in the present disclosure, the connection manner of the first joint section 12 and the reduced diameter section 452 and the connection manner of the second joint section 22 and the expanded diameter section 451 include, but are not limited to, screw connection manners in which the first joint section 12 and the reduced diameter section 452 and the second joint section 22 are detachably connected with the expanded diameter section 451 are all within the scope of the present disclosure.
Wherein, the end of the cleaning conversion sleeve 3 corresponding to the second connecting end 42 and the second connecting end 42 are provided with the bushing 8 therebetween to reduce the abrasion between the rotating water conversion inner core 4 and the cleaning conversion sleeve 3, prolong the service life of the cleaning conversion and reduce the production cost.
Wherein, the end of the cleaning conversion sleeve 3 corresponding to the first connecting end 41 and the first connecting end 41 are provided with the bushing 8 therebetween to reduce the abrasion between the rotating water conversion inner core 4 and the cleaning conversion sleeve 3, prolong the service life of the cleaning conversion and reduce the production cost.
In the embodiments provided by the present disclosure, the axial positioning of the water transfer core 4 as it rotates relative to the cleaning transfer sleeve 3 may be achieved in any suitable configuration. Optionally, as shown with reference to fig. 2, an axial stop 5 is provided between the first connection end 41 and the washing conversion sleeve 3 to limit the axial position of the water converting core 4 relative to the washing conversion sleeve 3.
The axial limiting piece 5 is fixed on the cleaning conversion sleeve 3 through a plurality of high-strength bolts, a gasket is arranged between the high-strength bolts and the axial limiting piece 5, a limiting groove 46 is formed in the outer surface of the first connecting end 41, the axial limiting piece 5 is matched in the limiting groove 46, and when the water conversion inner core 4 rotates, the axial limiting piece 5 is matched with the limiting groove 46, so that the position of the water conversion inner core 4 in the axial direction is unchanged.
Alternatively, the axial limiter 5 includes a main body 51 and a cushion pad 52 located at both sides of the main body 51 along the axial direction of the sleeve device, in the embodiment of the present disclosure, the cushion pad 52 may be made of rubber material, and during the rotation of the water conversion core 4, collision damage easily occurs between the axial limiter 5 and the limiting groove 46, and noise is generated, and the cushion pad 52 made of rubber material may prevent the collision damage between the axial limiter 5 and the limiting groove 46, and reduce the noise generated by the collision.
On the basis of the technical scheme, the disclosure further provides a multifunctional drilling machine, which comprises the power device and further comprises the sleeve device in the technical scheme, wherein the power device is in transmission connection with the first connecting end 41 of the water conversion inner core 4 so as to drive the water conversion inner core 4 and the drill rod assembly to perform drilling operation. The multifunctional drilling machine provided with the sleeve device has the same technical effects as the sleeve device, and in order to avoid unnecessary repetition, a description is omitted.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.
Claims (10)
1. A sleeve device of a multifunctional drilling machine is characterized in that,
the cannula device comprises:
an inner drill rod (1), the inner drill rod (1) having a first hollow cavity (10) therein, the distal end of the inner drill rod (1) being configured as an inner drill bit (11), the first hollow cavity (10) being in communication with the outside at the inner drill bit (11), and
-an outer drill rod (2), the outer drill rod (2) having a second hollow cavity (20), the distal end of the outer drill rod (2) being configured as an outer drill bit (21), the second hollow cavity (20) being in communication with the outside at the outer drill bit (21), the inner drill rod (1) being arranged in the second hollow cavity (20), and an annular cavity (201) being formed between the outer surface of the inner drill rod (1) and the cavity wall of the second hollow cavity (20); and
a water conversion inner core (4), the water conversion inner core (4) is provided with a first connecting end (41) and a second connecting end (42) which are opposite along the axial direction, the first connecting end (41) is used for being connected with a power device, the second connecting end (42) is provided with a step hole (45) extending towards the first connecting end (41), the inner surface of an expanding section (451) positioned at one side of the second connecting end (42) is provided with an inner thread matched with an outer thread on the proximal end of the outer drill rod (2), the inner surface of a reducing section (452) positioned at one side of the first connecting end (41) is provided with an inner thread matched with an outer thread on the proximal end of the inner drill rod (1), the proximal end of the outer drill rod (2) and the proximal end of the inner drill rod (1) are both detachably connected with the water conversion inner core (4) through threads,
the water conversion core (4) is provided with a water inlet channel (43) in fluid communication with the first hollow cavity (10) and a water outlet channel (44) in fluid communication with the annular cavity (201), and
a cleaning and converting sleeve (3), wherein the cleaning and converting sleeve (3) is sleeved on the outer side of the water converting inner core (4) and is in a sealing state, a water inlet pipe interface (31) which is in fluid communication with the water inlet channel (43) and a water outlet pipe interface (32) which is in fluid communication with the water outlet channel (44) are arranged on the cleaning and converting sleeve (3), the central axes of the water inlet pipe interface (31) and the water outlet pipe interface (32) extend along the radial direction of the cleaning and converting sleeve (3),
a water supply channel (33) is arranged on the inner surface of the cleaning conversion sleeve (3) and/or the outer surface of the water conversion inner core (4), the water supply channel (33) is an annular groove, and the water inlet pipe interface (31) and the water inlet channel (43) are in fluid communication;
along the axial direction of the sleeve device, a first sealing piece (6) is arranged between the cleaning conversion sleeve (3) and the water conversion inner core (4) at two sides of the water supply channel (33);
-the water inlet channel (43) comprises a radial segment (431) extending in a radial direction of the water converting core (4) and an axial segment (432) extending in an axial direction of the water converting core (4), the radial segment (431) being in fluid communication with the axial segment (432), the radial segment (431) being in fluid communication with the water supply channel (33), the axial segment (432) being in fluid communication with the first hollow cavity (10);
a drain channel (34) is arranged on the inner surface of the cleaning conversion sleeve (3) and/or the outer surface of the water conversion inner core (4), the drain channel (34) is annular, and a groove is in fluid communication with the drain pipe joint (32) and the water outlet channel (44);
along the axial direction of the sleeve device, second sealing elements (7) are arranged between the cleaning conversion sleeve (3) and the water conversion inner core (4) at two sides of the drainage channel (34),
an axial limiting piece (5) is arranged between the first connecting end (41) and the cleaning conversion sleeve (3),
the outer surface of the first connecting end (41) is provided with a limiting groove (46), and the axial limiting piece (5) is fixed in the cleaning conversion sleeve (3) and is matched in the limiting groove (46) so as to limit the axial position of the water conversion inner core (4) relative to the cleaning conversion sleeve (3).
2. A casing device of a multifunctional drilling machine according to claim 1, characterized in that,
the inner drill rod (1) comprises a first joint section (12), a first extension section (13) and a first working section (14) which are detachably connected in sequence, the first joint section (12) is detachably connected with the second connecting end (42), and the first working section (14) comprises the inner drill bit (11);
-said inner drill rod (1) comprises a plurality of said first extension sections (13);
the first joint section (12) and the first extension section (13) are provided with a first auxiliary dismounting part (15) on the outer surface;
the first auxiliary dismounting portion (15) is configured as a plane.
3. A casing device of a multifunctional drilling machine according to claim 1, characterized in that,
the outer drill rod (2) comprises a second joint section (22), a second extension section (23) and a second working section (24) which are detachably connected in sequence, the second joint section (22) is detachably connected to the second connecting end (42), and the second working section (24) comprises the outer drill bit (21);
-the outer drill rod (2) comprises a plurality of the second extension sections (23);
the outer surface of the second joint section (22) is provided with a second auxiliary dismounting part (25);
the second auxiliary dismounting portion (25) is configured as a groove.
4. A casing device of a multifunctional drilling machine according to claim 1, characterized in that,
the water supply channel (33) is arranged on the inner surface of the cleaning conversion sleeve (3);
the cleaning conversion sleeve (3) is provided with two water inlet pipe interfaces (31),
an included angle of 90 degrees is formed between the axes of the two water inlet pipe interfaces (31); the pipe diameter of the drain pipe joint (32) is larger than that of the water inlet pipe joint (31).
5. A casing device of a multifunctional drilling machine according to claim 1, characterized in that,
the radial section (431) is configured as a through-hole;
the radial segments (431) are provided in plurality.
6. A casing device of a multifunctional drilling machine according to claim 1, characterized in that,
the drain channel (34) is arranged on the inner surface of the cleaning conversion sleeve (3).
7. A casing device of a multifunctional drilling machine according to claim 1, characterized in that,
the water outlet channel (44) is configured as a through hole extending in a radial direction of the sleeve device;
the water outlet passage (44) is provided with a plurality of water outlet passages.
8. A casing device of a multifunctional drilling machine according to claim 1, characterized in that,
a lining (8) is arranged between the end part of the cleaning conversion sleeve (3) corresponding to the second connecting end (42) and the second connecting end (42);
a bushing (8) is arranged between the end of the cleaning conversion sleeve (3) corresponding to the first connecting end (41) and the first connecting end (41).
9. A casing device of a multifunctional drilling machine according to claim 1, characterized in that,
the axial limiting piece (5) comprises a main body (51) and buffer pads (52) which are positioned on two sides of the main body (51) along the axial direction of the sleeve device.
10. A multifunctional drilling machine comprises a power device, and is characterized in that,
the multifunctional drilling machine further comprises a casing device of the multifunctional drilling machine according to any one of claims 1-9, said power device being in driving connection with said first connection end (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810416631.XA CN108756752B (en) | 2018-05-03 | 2018-05-03 | Casing device of multifunctional drilling machine and multifunctional drilling machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810416631.XA CN108756752B (en) | 2018-05-03 | 2018-05-03 | Casing device of multifunctional drilling machine and multifunctional drilling machine |
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| CN108756752A CN108756752A (en) | 2018-11-06 |
| CN108756752B true CN108756752B (en) | 2023-08-22 |
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| CN201810416631.XA Active CN108756752B (en) | 2018-05-03 | 2018-05-03 | Casing device of multifunctional drilling machine and multifunctional drilling machine |
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| CN111622249B (en) * | 2020-06-16 | 2021-07-20 | 重庆市高新工程勘察设计院有限公司 | Miniature pumping device for underground water of narrow foundation pit and construction method thereof |
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