CN109252811B - Floating interval adjusting type raise boring machine - Google Patents
Floating interval adjusting type raise boring machine Download PDFInfo
- Publication number
- CN109252811B CN109252811B CN201811313539.7A CN201811313539A CN109252811B CN 109252811 B CN109252811 B CN 109252811B CN 201811313539 A CN201811313539 A CN 201811313539A CN 109252811 B CN109252811 B CN 109252811B
- Authority
- CN
- China
- Prior art keywords
- ring sleeve
- adjusting
- inner ring
- connecting shaft
- drill
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000011435 rock Substances 0.000 description 9
- 238000009423 ventilation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- E21B10/00—Drill bits
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
-
- 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
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
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 invention discloses a floating interval adjusting type raise boring machine, which comprises a base support, a telescopic mechanism, a drill rod, a drill bit and a T-shaped adjusting screw rod, wherein the base support is fixedly connected with the drill rod; the invention is additionally provided with an adjusting structure of the floating distance of the outer ring sleeve, the inner ring sleeve is provided with an adjusting groove and an adjusting threaded hole, one end of a T-shaped adjusting screw rod penetrates through the adjusting groove and then is in threaded connection with the adjusting threaded hole, one end of the T-shaped adjusting screw rod extends to a position between the inner side of the inner ring body and the outer side of the clamping plate, and the other end of the T-shaped adjusting screw rod is positioned in the adjusting groove.
Description
Technical Field
The invention relates to a floating distance adjustable raise boring machine.
Background
At present, the raise boring machine is mainly applied to the industries of vertical shafts, inclined shafts, surge shafts, ventilation shafts and drainage shafts of hydropower engineering, ventilation shafts of railway construction, slag sliding shafts of mines and the like. The drill bit in the raise boring machine is the most important part in the whole mechanism, the general drill bit includes cutter head, tool apron, hobbing cutter, the tool apron is installed on cutter head, the hobbing cutter is installed on tool apron, the distribution and structure of the hobbing cutter have a great influence on the efficiency and stability of breaking rock, the existing hobbing cutter is an integrated cylindrical structure, the side part of the cylindrical structure is distributed with grinding ribs, but the integrated hobbing cutter can be damaged by impact or seriously abraded after long-term operation, so the whole hobbing cutter is scrapped, and the hobbing cutter needs to be integrally disassembled to install a new hobbing cutter again, thus the operation efficiency and the operation cost are influenced; in the prior art, the angle of the hob cannot be adjusted according to the broken rock surface, so that the contact between the hob and the broken rock surface is not coincident, and the rock breaking efficiency is low.
Disclosure of Invention
Aiming at the defects of the prior art, the invention solves the problems that: the floating distance adjusting type raise boring machine is controllable in floating distance and the drill cutter can be attached to a rock breaking surface in a floating mode.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a floating interval adjusting type raise boring machine comprises a base support, a telescopic mechanism, a drill rod, a drill bit and a T-shaped adjusting screw rod; the telescopic mechanism is arranged on the base bracket; the drill rod is arranged at the upper end of the telescopic mechanism; the drill bit is arranged at the upper end of the drill rod; the drill bit comprises a cutter head, a cutter seat, a drill cutter and a connecting shaft; the cutter head is arranged at the upper end of the drill rod; the upper end of the cutter head is provided with a plurality of cutter seats; a connecting shaft is arranged in the tool apron; the drill is arranged on the connecting shaft in the tool apron; the drill bit comprises an outer ring sleeve, an inner ring sleeve, a plurality of clamping plates and a plurality of elastic bodies; the outer ring sleeve is movably sleeved outside the inner ring sleeve; a plurality of clamping plates are uniformly arranged on the inner side of the inner ring sleeve; a plurality of elastic bodies are fixedly arranged between the outer side of the clamping plate and the inner wall of the inner ring sleeve; the elastic body elastically presses the clamping plate to move towards the center of the inner ring body; the connecting shaft is connected among the plurality of clamping plates in a penetrating manner; a plurality of semicircular guide strips are arranged on the outer side of the periphery of the connecting shaft; the inner side of the clamping plate is provided with a semicircular guide groove; the semicircular guide strips on the outer sides of the periphery of the connecting shaft are inserted into the semicircular guide grooves of the clamping plates; a plurality of adjusting grooves are formed in the outer side of the periphery of the inner ring sleeve; the inner sides of the adjusting grooves are respectively communicated with an adjusting threaded hole; the outer sides of the clamping plates respectively correspond to an adjusting threaded hole; one end of the T-shaped adjusting screw rod penetrates through the adjusting groove and then is in threaded connection with the adjusting threaded hole; one end of the T-shaped adjusting screw rod extends to a position between the inner side of the inner ring body and the outer side of the clamping plate; the other end of the T-shaped adjusting screw rod is positioned in the adjusting groove.
Further, the connecting shaft is of a cylindrical structure; the section of the clamping plate is of an arc-shaped structure; the plurality of clamping plates are encircled into a circular track structure; the clamping plates are clamped and attached to the outer sides of the periphery of the connecting shaft.
Further, an internal thread section is arranged inside the outer ring sleeve; the outer side of the inner ring sleeve is provided with an external thread section; the inner ring sleeve is connected to the inner thread section of the outer ring sleeve through the outer thread section in a threaded mode.
Further, the outer ring sleeve is made of a titanium alloy material.
Furthermore, the tool apron is of a U-shaped structure.
Further, the device also comprises a rotary driving mechanism; the rotary driving mechanism is arranged at the upper end of the telescopic driving mechanism; the bottom of the drill rod is arranged at the upper end of the rotary driving mechanism.
The invention has the advantages of
The invention adds an adjusting structure of the floating distance of the outer ring sleeve, the inner ring sleeve is provided with an adjusting groove and an adjusting threaded hole, one end of a T-shaped adjusting screw rod penetrates through the adjusting groove and then is in threaded connection with the adjusting threaded hole, one end of the T-shaped adjusting screw rod extends to a position between the inner side of the inner ring body and the outer side of the clamping plate, and the other end of the T-shaped adjusting screw rod is positioned in the adjusting groove, so that the distance between the T-shaped adjusting screw rod and the clamping plate is the floating distance between the outer ring sleeve and the inner ring sleeve, and the use is more flexible from the controllable purpose; the structure of the traditional drill is changed, the drill comprises an outer ring sleeve, an inner ring sleeve, a plurality of clamping plates and a plurality of elastic bodies, the inner ring sleeve is used as an intermediate carrier, the clamping plates are arranged inside the outer ring sleeve, the clamping plates can be conveniently detached, the elastic bodies are fixedly arranged between the outer sides of the clamping plates and the inner wall of the inner ring sleeve, the connecting shaft is clamped and connected through the clamping plates, and if the outer ring sleeve can elastically float and stretch on the connecting shaft, the outer ring sleeve can float and stretch according to the structure of a rock breaking surface, and the rock breaking efficiency is improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a side view of the drill according to the present invention.
Fig. 3 is a schematic sectional view of the drill of the present invention.
FIG. 4 is a schematic structural view of an inner ring sleeve, a plurality of clamping plates, a plurality of elastic bodies, and a T-shaped adjusting screw according to the present invention.
Fig. 5 is a schematic structural view of the outer cuff of the present invention.
Fig. 6 is a schematic sectional view of the connecting shaft of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 6, a floating distance adjustable raise boring machine comprises a base bracket 1, a telescopic mechanism 2, a drill rod 4, a drill bit 5 and a T-shaped adjusting screw 10; the telescopic mechanism 2 is arranged on the base bracket 1; the drill rod 4 is arranged at the upper end of the telescopic mechanism 2; the drill bit 5 is arranged at the upper end of the drill rod 4; the drill bit 5 comprises a cutter head 6, a cutter holder 7, a drill cutter 8 and a connecting shaft 9; the cutter head 6 is arranged at the upper end of the drill rod 4; the upper end of the cutter head 6 is provided with a plurality of cutter seats 7; a connecting shaft 9 is arranged in the tool apron 7; the drill 8 is arranged on a connecting shaft 9 in the tool apron 7; as shown in fig. 3 and 4, the drill 8 includes an outer ring sleeve 81, an inner ring sleeve 82, a plurality of clamping plates 83, and a plurality of elastic bodies 84; the outer ring sleeve 81 is movably sleeved outside the inner ring sleeve 82; a plurality of clamping plates 83 are uniformly arranged on the inner side of the inner ring sleeve 82; a plurality of elastic bodies 84 are fixedly arranged between the outer side of the clamping plate 83 and the inner wall of the inner ring sleeve 82; the elastic body 84 elastically presses the clamping plate 83 to move towards the center of the inner ring body 82; the connecting shaft 9 is inserted between the clamping plates 83; as shown in fig. 4 and 6, a plurality of semicircular guide strips 91 are arranged on the outer side of the periphery of the connecting shaft 9; the inner side of the clamping plate 83 is provided with a semicircular guide 831; the semicircular guide strips 91 on the outer sides of the periphery of the connecting shaft 9 are inserted into the semicircular guide grooves 831 connected to the clamping plate 83. A plurality of adjusting grooves 821 are arranged on the outer side of the periphery of the inner ring sleeve 82; the inner sides of the adjusting grooves 821 are respectively communicated with an adjusting threaded hole 822; the outer sides of the clamping plates 83 correspond to an adjusting threaded hole 822 respectively; one end of the T-shaped adjusting screw 10 passes through the adjusting groove 821 and then is in threaded connection with the adjusting threaded hole 822; one end of the T-shaped adjusting screw 10 extends to the position between the inner side of the inner ring 82 and the outer side of the clamping plate 83; the other end of the T-shaped adjusting screw 10 is located in the adjusting groove 821.
As shown in fig. 1 to 6, it is further preferable that the connecting shaft 9 is of a cylindrical structure; the section of the clamping plate 83 is of an arc structure; the plurality of clamping plates 83 surround to form a circular track structure; the plurality of clamping plates 83 are clamped and attached to the outer sides of the periphery of the connecting shaft 9. Further preferably, the inner part of the outer ring sleeve 81 is provided with an internal thread section 811; the outer side of the inner ring sleeve 82 is provided with an external thread section 821; the inner collar 82 is threadably connected to the internally threaded section 811 of the outer collar 81 by an externally threaded section 821. Further preferably, the outer ring 81 is made of a titanium alloy material. Preferably, the tool holder 7 is of a U-shaped structure. Further preferably, the device further comprises a rotary driving mechanism 3; the rotary driving mechanism 3 is arranged at the upper end of the telescopic driving mechanism 2; the bottom of the drill rod 4 is arranged at the upper end of the rotary driving mechanism 3.
The invention adds an adjusting structure of the floating distance of the outer ring sleeve 81, the inner ring sleeve 82 is provided with an adjusting groove 821 and an adjusting threaded hole 822, one end of a T-shaped adjusting screw 10 penetrates through the adjusting groove 821 and then is in threaded connection with the adjusting threaded hole 822, one end of the T-shaped adjusting screw 10 extends to the position between the inner side of the inner ring 82 and the outer side of the clamping plate 83, and the other end of the T-shaped adjusting screw 10 is positioned in the adjusting groove 821, so that the distance between the T-shaped adjusting screw 10 and the clamping plate 83 is the floating distance of the outer ring sleeve 81 and the inner ring sleeve 82, and the use is more flexible from the controllable purpose; the structure of the traditional drill 8 is changed, the drill 8 comprises an outer ring sleeve 81, an inner ring sleeve 82, a plurality of clamping plates 83 and a plurality of elastic bodies 84, the inner ring sleeve 82 is used as a middle carrier, the clamping plates 83 are arranged inside the outer ring sleeve 81, the plurality of elastic bodies 84 are fixedly arranged between the outer sides of the clamping plates 83 and the inner wall of the inner ring sleeve 82, the connecting shaft 9 is clamped and connected through the plurality of clamping plates 83, and if the outer ring sleeve 81 can elastically float and stretch on the connecting shaft 9, the outer ring sleeve 81 can float and stretch according to the structure of a rock breaking surface, and the rock breaking efficiency is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. A floating interval adjusting type raise boring machine comprises a base support, a telescopic mechanism, a drill rod and a drill bit; the telescopic mechanism is arranged on the base bracket; the drill rod is arranged at the upper end of the telescopic mechanism; the drill bit is arranged at the upper end of the drill rod; the drill bit comprises a cutter head, a cutter seat, a drill cutter and a connecting shaft; the cutter head is arranged at the upper end of the drill rod; the upper end of the cutter head is provided with a plurality of cutter seats; a connecting shaft is arranged in the tool apron; the drill is arranged on the connecting shaft in the tool apron; it is characterized by also comprising a T-shaped adjusting screw rod; the drill bit comprises an outer ring sleeve, an inner ring sleeve, a plurality of clamping plates and a plurality of elastic bodies; the outer ring sleeve is movably sleeved outside the inner ring sleeve; a plurality of clamping plates are uniformly arranged on the inner side of the inner ring sleeve; a plurality of elastic bodies are fixedly arranged between the outer side of the clamping plate and the inner wall of the inner ring sleeve; the elastic force of the elastic body presses the clamping plate to move towards the center of the inner ring sleeve; the connecting shaft is connected among the plurality of clamping plates in a penetrating manner; a plurality of semicircular guide strips are arranged on the outer side of the periphery of the connecting shaft; the inner side of the clamping plate is provided with a semicircular guide groove; the semicircular guide strips on the outer sides of the periphery of the connecting shaft are inserted into the semicircular guide grooves of the clamping plates; a plurality of adjusting grooves are formed in the outer side of the periphery of the inner ring sleeve; the inner sides of the adjusting grooves are respectively communicated with an adjusting threaded hole; the outer sides of the clamping plates respectively correspond to an adjusting threaded hole; one end of the T-shaped adjusting screw rod penetrates through the adjusting groove and then is in threaded connection with the adjusting threaded hole; one end of the T-shaped adjusting screw rod extends to a position between the inner side of the inner ring sleeve and the outer side of the clamping plate; the other end of the T-shaped adjusting screw rod is positioned in the adjusting groove; an internal thread section is arranged inside the outer ring sleeve; the outer side of the inner ring sleeve is provided with an external thread section; the inner ring sleeve is connected to the inner thread section of the outer ring sleeve through the outer thread section in a threaded manner; the connecting shaft is of a cylindrical structure; the section of the clamping plate is of an arc-shaped structure; the plurality of clamping plates are encircled into a circular track structure; the clamping plates are clamped and attached to the outer sides of the periphery of the connecting shaft.
2. The floating spacing adjustable raise boring machine according to claim 1, wherein said outer sleeve is made of a titanium alloy material.
3. The floating spacing adjustable raise boring machine according to claim 1, wherein said tool holder is of U-shaped configuration.
4. The floating spacing adjustable raise boring machine of claim 1, further comprising a rotary drive mechanism; the rotary driving mechanism is arranged at the upper end of the telescopic driving mechanism; the bottom of the drill rod is arranged at the upper end of the rotary driving mechanism.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811313539.7A CN109252811B (en) | 2018-11-06 | 2018-11-06 | Floating interval adjusting type raise boring machine |
| PCT/CN2018/114365 WO2020093269A1 (en) | 2018-11-06 | 2018-11-07 | Floating spacing adjustment-type reverse well drilling rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811313539.7A CN109252811B (en) | 2018-11-06 | 2018-11-06 | Floating interval adjusting type raise boring machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109252811A CN109252811A (en) | 2019-01-22 |
| CN109252811B true CN109252811B (en) | 2020-11-24 |
Family
ID=65044489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811313539.7A Active CN109252811B (en) | 2018-11-06 | 2018-11-06 | Floating interval adjusting type raise boring machine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109252811B (en) |
| WO (1) | WO2020093269A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318663B (en) * | 2019-04-29 | 2021-02-05 | 江苏和信石油机械有限公司 | Adjust convenient automatic drive formula raise boring machine |
| CN113914781A (en) * | 2021-09-15 | 2022-01-11 | 青海九零六工程勘察设计院 | Drilling device suitable for bedrock mountain area |
| CN114198018B (en) * | 2021-11-17 | 2023-10-31 | 江苏昭旸智能装备有限公司 | Multi-angle rotary drilling machine based on remote control |
| CN114233206B (en) * | 2021-12-03 | 2023-07-28 | 江苏和信石油机械有限公司 | Drilling rod structure of well reversing drilling machine for hydroelectric system |
| CN114165173B (en) * | 2021-12-14 | 2023-07-25 | 江苏和信石油机械有限公司 | Quick assembly type drill rod and drill bit structure for rescue |
| CN114909145B (en) * | 2022-05-11 | 2023-06-16 | 江苏和信石油机械有限公司 | Shield drilling machine for excavating pressure pipeline well of pumped storage power station |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4114698A (en) * | 1975-02-20 | 1978-09-19 | Smith International, Inc. | Method and apparatus for tunneling upwardly |
| SU1089227A1 (en) * | 1983-02-04 | 1984-04-30 | Криворожский Ордена Трудового Красного Знамени Горнорудный Институт | Expansion tool for drilling ascending holes |
| JP4512857B2 (en) * | 2000-01-31 | 2010-07-28 | 三谷セキサン株式会社 | Pile hole drilling rod |
| CN200974176Y (en) * | 2006-11-23 | 2007-11-14 | 中国北车集团大同电力机车有限责任公司 | Flotation supporting device |
| CN203292783U (en) * | 2013-03-21 | 2013-11-20 | 宝山钢铁股份有限公司 | Manual pipe coupling pre-twisting device capable of adjusting in floating mode |
| CN204299506U (en) * | 2014-10-31 | 2015-04-29 | 神华集团有限责任公司 | A kind ofly add lever apparatus and there is this derrick adding lever apparatus |
| CN104475875A (en) * | 2014-12-17 | 2015-04-01 | 江阴市盛园铜材有限公司 | Novel hob |
| CN106869788B (en) * | 2015-06-04 | 2018-11-06 | 北京中煤矿山工程有限公司 | To anti-well drilling machine in movable type |
| CN205341186U (en) * | 2016-01-20 | 2016-06-29 | 中南大学 | Electromagnetic drive dispensing valve |
| US10876360B2 (en) * | 2016-02-26 | 2020-12-29 | Halliburton Energy Services, Inc. | Hybrid drill bit with axially adjustable counter rotation cutters in center |
| CN106761430A (en) * | 2017-01-11 | 2017-05-31 | 四川金占机械制造有限责任公司 | A kind of rock drilling inserted tooth hob drill bit |
| CN107052567A (en) * | 2017-05-03 | 2017-08-18 | 深圳翠涛自动化设备股份有限公司 | The anticollision device, collision-prevention device and avoiding collision of a kind of bonding equipment |
| CN206522105U (en) * | 2017-07-19 | 2017-09-26 | 四川金占机械制造有限责任公司 | A kind of inserted tooth hob drill bit of efficient rock-breaking |
| CN107605500B (en) * | 2017-09-14 | 2019-11-29 | 株洲钻石钻掘工具有限公司 | A kind of composite shield hobboing cutter cutter ring |
| CN107905735A (en) * | 2017-11-14 | 2018-04-13 | 江苏和信石油机械有限公司 | A kind of anti-well drilling machine of floating gear type |
| CN107905734B (en) * | 2017-11-14 | 2019-09-03 | 江苏和信石油机械有限公司 | A kind of anti-well brill machine bit of position adjustment type |
| CN107905724A (en) * | 2017-11-14 | 2018-04-13 | 江苏和信石油机械有限公司 | A kind of hobboing cutter splits the anti-well drilling machine of type that gathers |
| CN107905736B (en) * | 2017-11-14 | 2019-09-03 | 江苏和信石油机械有限公司 | A kind of floating type anti-well brill machine bit |
| CN108757804A (en) * | 2018-07-19 | 2018-11-06 | 扬州宝达橡塑制品有限公司 | A kind of damper spring |
-
2018
- 2018-11-06 CN CN201811313539.7A patent/CN109252811B/en active Active
- 2018-11-07 WO PCT/CN2018/114365 patent/WO2020093269A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020093269A1 (en) | 2020-05-14 |
| CN109252811A (en) | 2019-01-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109252811B (en) | Floating interval adjusting type raise boring machine | |
| CN109184577B (en) | Clamping type raise boring machine | |
| CN109538114B (en) | Attaching type raise boring machine | |
| CN107905735A (en) | A kind of anti-well drilling machine of floating gear type | |
| CN107905723A (en) | A kind of anti-well drilling machine with rotary knife base | |
| CN105414603A (en) | Aluminum strip drilling device for hollow glass molecular sieve filling machine | |
| CN203253977U (en) | Drill bit with adjustable drill hole external diameters | |
| CN110238136B (en) | Floating reamer and use method | |
| CN114458153A (en) | Drilling equipment for tunnel construction | |
| CN205386646U (en) | Expand end ream bit | |
| CN108436133A (en) | A kind of horizontal and vertical locking type valve drilling equipment | |
| CN110318678B (en) | Drill rod for shale gas | |
| CN107905724A (en) | A kind of hobboing cutter splits the anti-well drilling machine of type that gathers | |
| CN110295845B (en) | Automatic driving type raise boring machine | |
| JP3168092U (en) | Grooving machine for inner surface of hole | |
| CN109434179A (en) | A kind of metal floating cutter device | |
| CN205763891U (en) | A kind of coupling box fixture | |
| CN208303972U (en) | A kind of diamond hole drill | |
| CN210879077U (en) | Lifting structure of base of water drilling machine | |
| CN207521755U (en) | A kind of valve drilling equipment of stable connection | |
| CN110318663B (en) | Adjust convenient automatic drive formula raise boring machine | |
| CN207359380U (en) | A kind of rock ore bed perforating device | |
| CN206286869U (en) | A kind of lathe supplementary module for screw rod processing | |
| CN206812062U (en) | A kind of elastic gum wing topping machanism of oil steering tool centralizer | |
| CN217681750U (en) | But cutting pick section of thick bamboo of automatically regulated pick height bores |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |