CN201297149Y - Bit extractor of drilled pile with gib head plate - Google Patents
Bit extractor of drilled pile with gib head plate Download PDFInfo
- Publication number
- CN201297149Y CN201297149Y CNU2008200399952U CN200820039995U CN201297149Y CN 201297149 Y CN201297149 Y CN 201297149Y CN U2008200399952 U CNU2008200399952 U CN U2008200399952U CN 200820039995 U CN200820039995 U CN 200820039995U CN 201297149 Y CN201297149 Y CN 201297149Y
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- CN
- China
- Prior art keywords
- bit
- extractor
- fisher
- head plate
- guide sleeve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a bit extractor of a drilled pile with a gib head plate, comprising a connecting flange, an external guide sleeve, an extractor inner sleeved bar, a sliding block, a connecting strengthened plate and a gib head plate. The utility model has the advantages that the prior general bit extractor is additionally provided with the external guide sleeve and the sliding block, so that the bit extractor can be inserted in a bit (bar) hole for salvage under the condition that when a bit or a drill stem without a driller has a small inclined angle, thus simultaneously keeping the function of the prior bit extractor; when the bit or the drill stem without the driller has a large inclined angle, the inclined drill stem is corrected by the gib head plate at the lower part of the bit extractor through rotating an extractor bar, and then the extractor is put down and the extractor inner sleeved bar is inserted into a drilling tool along the external guide sleeve; the sliding block with chamfered teeth face moves down under gravity, so that the contacting area between the sliding block and the drilling tool is increased to form self locking and salvage the drilling tool. The bit extractor savages the bit when the bit is fallen at the bottom of the hole under any condition and any status. The utility model has the advantages of convenient operation, which is suitable for the salvage of the drilling tool with the inclined drill stem, wherein, the drilled pile is in large borehole, and the bit without the driller has the drill stem.
Description
Technical field
The utility model send out and be a kind of drill extractor of bored pile of buckle head plate,, salvage when being used in particular for the drilled pile drill bit and coming off, belong to the construction foundation working technical field.
Background technology
Bored pile often is used in the basis of construction works such as bridge, house, has the disengaging of drill bit and drilling rod, drill rod breaking in drilled pile drilling construction process once in a while, and drill bit is dropped at the bottom of the hole.Because of drill bit, drilling rod are made by steel material, the drill bit that falls at the bottom of the hole must in time be salvaged double tides, otherwise, in case hole wall collapse, cause drill bit to take out and outside scrapping, also need take other loaded down with trivial details measure to continue drilling construction, even might cause pile foundation to scrap and change design, the dawn has not been incured loss through delay the construction period, and economic loss is also very huge.Existing drill bit fisher is made up of adpting flange, fisher bar, recovery hook usually, drill bit fall to bore back fisher bar and links to each other back at the bottom of the hole with borer drill rod, by rotation, directly hook hole subdrilling bar or drill bit, promote drilling rod and take drill bit out of, the dawn does not need the long salvaging time to this fisher, and be only applicable to fall into drill bit at the bottom of the hole is not in plumbness substantially with drilling rod or drilling rod situation, if the drilling rod that fall to bore is long or during the drilling rod run-off the straight, existing fisher just can't be salvaged it smoothly, taking-up.
Summary of the invention
The utility model proposes a kind of drill extractor of bored pile of buckle head plate, is made up of band outer guide sleeve, gib head plate, interior loop bar, a sliding shoe, salvaging falls into the drill bit of any state at the bottom of the hole, is intended at the above-mentioned defective of existing in prior technology.
Technical solution of the present utility model: it is characterized in that adpting flange is fixed on fisher drilling rod top, outer guide sleeve is positioned at the outside of fisher drilling rod, outer guide sleeve top is connected with loop bar in the fisher, and there is slide block slot both sides, loop bar lower end in the fisher, and sliding shoe moves up and down in slide block slot, the gib head plate is connected with outer guide sleeve by connecting the strength plate, sliding shoe is in slide block slot, and slide block slot is provided with the gradient, and this gradient is tapered, sliding shoe is a pawl bar structure, and the flank of tooth outwardly.
Advantage of the present utility model: the present invention has increased outer guide sleeve and sliding shoe on former conventional bit fisher, when making its drill bit that pawns brill or drilling rod gradient little, can directly insert in drill bit (bar) hole and salvage, and keeps the function of former drill bit fisher; Pawn the drilling rod gradient of brill when big, by rotating the fisher bar, utilize the gib head plate of drill bit fisher bottom that the drilling rod that tilts is set right, transfer fisher again, loop bar inserts in drill bit or the drilling rod along outer guide sleeve in the fisher, realizes that drilling tool salvages.Therefore this drill extractor of bored pile is applicable to that the drill bit of falling into any situation at the bottom of the hole, being in any state salvages, and is easy to operate, is specially adapted to large-diameter borehole stake, the drill bit band drilling rod that falls to bore and the tilted-putted drilling tool of drilling rod and salvages.
Description of drawings
Fig. 1 is the drill extractor of bored pile elevation
Fig. 2 is an A-A profile in the drill extractor of bored pile elevation
Fig. 3 is sliding shoe drawing of site when loop bar inserts drilling tool in the fisher
Fig. 4 is sliding shoe drawing of site when loop bar promotes drilling tool in the fisher
Fig. 5 is sliding shoe position B-B profile when loop bar promotes drilling tool in the fisher
Among the figure 1 is adpting flange, the 2nd, loop bar, the 4th in the fisher outer guide sleeve, the 3rd, fisher, and sliding shoe, the 5th connects strength plate, the 6th, gib head plate, the 7th, slide block slot.
The specific embodiment
On the drill bit fisher of routine, increased outer guide sleeve, the location when working and move down guiding as fisher.Both sides, loop bar bottom have slide block slot in the described fisher, and sliding shoe moves in being provided with the groove of the gradient, and sliding shoe is when top, and outside dimension is less, and sliding shoe is after moving down, and it is big that outside dimension becomes gradually.
Described sliding shoe is a pawl bar structure, and the flank of tooth outwardly.When sliding shoe is subjected to making progress external force, slide to top, diameter and interior loop bar are consistent; Sliding shoe is subjected to moving down along gradient groove behind the gravity, and external diameter becomes greatly gradually, and pawl face and outer drill rod produce pressure, and gravity is big more, pressure is also big more, finally forms self-locking.
Drill bit fisher operating principle: adpting flange is connected with bolt with the borer drill rod standard knot, makes fisher can utilize rig to finish the salvaging function.When the gib head plate is transferred to the hole drilling tool position at fisher,, the drilling rod that tilts can be set right to plumbness by rotary drill rod at a slow speed.When dragging for drilling rod was in relative plumbness, the fisher outer guide sleeve entangled drilling tool as positioning sleeve, and loop bar inserts in the drilling tool hole smoothly in making.Sliding shoe is the pawl strip structure, and outside pawl faced, the tooth bar back side (shiny surface) placed along slide block slot; When fisher inserted in the drilling tool hole, sliding shoe slided to top because of being subjected to frictional force upwards along loop bar gradient slide block slot in the fisher, kept and interior loop bar external diameter same size, and loop bar can successfully insert in the drilling tool in the fisher; When fisher upwards promotes, sliding shoe is subjected to gliding along interior loop bar slide block slot behind the gravity, because of interior loop bar lower slider groove diameter becomes greatly gradually, sliding shoe is more to downslide, and outside flanks and institute's salvaging drilling tool inwall contact area are big more, pressure is also big more, the final self-locking state that forms at this moment, promotes drilling rod, drilling tool can promote thereupon, realizes salvaging.
Embodiment
Certain bridge primary abutment plinth is that Φ 2.8m, hole depth are the 100m drilled pile, a pile foundation is arranged in this basis when constructing to hole depth 78m, disconnected the dropping in the hole of the related two joint standard knot drilling rods of drilling tool, Yi Bian find that through surveying drilling rod has been attached to the hole wall limit, it is very big to tilt.After with this drill extractor of bored pile adpting flange and borer drill rod standard knot bolt, under the fisher in the hand-hole during drilling tool position, by rotary drill rod at a slow speed, the gib head plate is dialled into plumbness with the drilling rod that tilts, transfer drilling rod again, fisher is under the guiding of fairlead, interior loop bar successfully inserts in the drilling tool, promote borer drill rod, sliding shoe glides along interior loop bar slide block slot, and this moment, sliding shoe outside flanks and drilling tool drilling rod inwall contact area strengthened gradually, pressure also strengthens, form self-locking state, drilling tool promotes with drilling rod, only just successfully realizes the drilling tool salvaging with six hours.
Claims (1)
1, the drill extractor of bored pile of buckle head plate, it is characterized in that adpting flange is fixed on fisher drilling rod top, outer guide sleeve is positioned at the outside of fisher drilling rod, and outer guide sleeve top is connected with loop bar in the fisher, there is slide block slot both sides, loop bar lower end in the fisher, sliding shoe moves up and down in slide block slot, and the gib head plate is connected with outer guide sleeve by connecting the strength plate, and sliding shoe is in slide block slot, slide block slot is provided with the gradient, this gradient is tapered, and sliding shoe is a pawl bar structure, and the flank of tooth outwardly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200399952U CN201297149Y (en) | 2008-07-18 | 2008-07-18 | Bit extractor of drilled pile with gib head plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200399952U CN201297149Y (en) | 2008-07-18 | 2008-07-18 | Bit extractor of drilled pile with gib head plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201297149Y true CN201297149Y (en) | 2009-08-26 |
Family
ID=41043128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200399952U Expired - Lifetime CN201297149Y (en) | 2008-07-18 | 2008-07-18 | Bit extractor of drilled pile with gib head plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201297149Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953306A (en) * | 2014-05-20 | 2014-07-30 | 中煤特殊凿井有限责任公司 | Large-caliber bit fisher |
| CN111997555A (en) * | 2020-09-15 | 2020-11-27 | 中勘资源勘探科技股份有限公司 | Fishing tool for objects falling from well bottom and fishing method thereof |
| CN115075761A (en) * | 2022-06-16 | 2022-09-20 | 中石化石油工程技术服务有限公司 | Special soft stratum broken drill rod fisher for orientation |
-
2008
- 2008-07-18 CN CNU2008200399952U patent/CN201297149Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953306A (en) * | 2014-05-20 | 2014-07-30 | 中煤特殊凿井有限责任公司 | Large-caliber bit fisher |
| CN103953306B (en) * | 2014-05-20 | 2016-09-07 | 中煤特殊凿井有限责任公司 | A kind of large diameter bit fisher |
| CN111997555A (en) * | 2020-09-15 | 2020-11-27 | 中勘资源勘探科技股份有限公司 | Fishing tool for objects falling from well bottom and fishing method thereof |
| CN115075761A (en) * | 2022-06-16 | 2022-09-20 | 中石化石油工程技术服务有限公司 | Special soft stratum broken drill rod fisher for orientation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090826 |