CN2157306Y - Expanding and cleaning drill tool - Google Patents
Expanding and cleaning drill tool Download PDFInfo
- Publication number
- CN2157306Y CN2157306Y CN 93218574 CN93218574U CN2157306Y CN 2157306 Y CN2157306 Y CN 2157306Y CN 93218574 CN93218574 CN 93218574 CN 93218574 U CN93218574 U CN 93218574U CN 2157306 Y CN2157306 Y CN 2157306Y
- Authority
- CN
- China
- Prior art keywords
- drill
- bit body
- scrapers
- fixed
- bit
- 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.)
- Expired - Fee Related
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- Earth Drilling (AREA)
Abstract
The utility model discloses a hole expanding and cleaning drill comprising movable scrapers, pin shafts, a bit body and fixed scrapers, wherein, the fixed scrapers are welded in the bit body; the outer column surface of the bit body is provided with a plurality of slots all inlaid with the movable scrapers. The freely openable movable scrapers are fixed on the bit body via the pin shafts. When rotating, the drill can drill downward as expanding holes. The drill is arranged at the lower end of a core barrel whose upper end is connected with a drill joint. Drilled soil dust is held in the core barrel. A plurality of fixed scrapers arranged on the lower part of the drill form a certain inclination angle with the section of the bit to support the soil dust.
Description
The utility model relates to the improvement of weak soil sampling hole cleaning device.The clear hole drill tool of reaming is suitable for using in the soil layer of the easy shrinkage cavity of weak soil.
Sampling is general in the soil layer of the easy shrinkage cavity of weak soil at present adopts hollow twist bit or overlaps twist bit.But, mud and the sand loam soil bigger to flowability, with the clear hole of hollow twist bit poor effect, the resistance suffered with the cover twist bit is bigger again.In addition, because of hollow twist bit or the cover twist bit identical with soil sampler external diameter specification, therefore, during drilling tool lifting, often produce shrinkage cavity, this will make soil sampler be difficult to be put at the bottom of the hole.If strengthen clear hole, then need strengthen the probing aperture, and the drill bit of probing hole outfit, sleeve pipe, basket etc. all need increase.
The purpose of this utility model provides a kind of mobile bigger mud and reaming hole cleaning device of sand loam soil use of being particularly suitable for.This device need not increase bore diameter, can reach the purpose that enlarges the clear hole of one-level, and eliminate native phenomenon.
Below in conjunction with accompanying drawing the utility model is described in detail as follows:
Fig. 1 is the front view of the clear hole drill tool of reaming
Fig. 2 is the lateral view of the clear hole drill tool of reaming
The clear hole drill tool of reaming is by movable scraper 1, bearing pin 2, and bit body 3 and fixed doctor 4 form.
In bit body, be welded with fixed doctor 4, be used for cutting hole subsoil earth, external cylindrical surface at bit body has several grooves, all stud with movable scraper 1 in each groove, movable scraper 1 is fixed on the bit body 3 by bearing pin 2, movable scraper 1 energy free-open-close, with convenient cutting hole wall, when drilling tool rotates, creep into downwards on the one hand, carry out on the one hand reaming. This drilling tool is contained in the basket lower end, and upper termination drilled dry joint is housed in basket with the soil bits that drill through In, carry when boring, because the drilled dry tab closure is arranged, not washed away by mud, can prevent soil. Several fixed doctor are arranged at the drilling tool bottom, and with the bit body cross section certain inclination angle are arranged, and work to hold the soil bits. The movable scraper 1 that reaming is used is subjected to the effect of hole wall resistance when rising, promote scraper and be combined. So, not only dwindled diameter, and unaffected during drilling tool lifting, and slotted eye is closed, prevented from soil.
Embodiment
Be welded with three fixed doctor 4 in bit body, have three grooves on the cylinder of the outer garden of bit body, three movable scrapers 1 are contained in three grooves by bearing pin 2 respectively.The angle of slope in three fixed doctor and bit body cross section is arranged at the drilling tool bottom is 30 °.
The utility model compared with prior art has the following advantages:
1. do not increase bore diameter, just can reach the purpose that enlarges clear hole. In 110mm boring, can expand 130～140mm to.
2. the fixed doctor of inclination is housed because of the drilling tool bottom, can works to hold the soil bits, almost do not have native phenomenon and take place.
Claims (1)
1, a kind of clear hole drill tool, it is characterized in that: the clear hole drill tool of reaming is made up of movable scraper, bearing pin, bit body and fixed doctor, be welded with fixed doctor in the bit body, on the cylinder of the outer garden of bit body, have in several grooves, each groove and all stud with movable scraper, movable scraper is fixed on the bit body by bearing pin, and the drilling tool bottom has several fixed doctor and drill bit cross section that certain angle of slope is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93218574 CN2157306Y (en) | 1993-07-19 | 1993-07-19 | Expanding and cleaning drill tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93218574 CN2157306Y (en) | 1993-07-19 | 1993-07-19 | Expanding and cleaning drill tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2157306Y true CN2157306Y (en) | 1994-02-23 |
Family
ID=33798199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93218574 Expired - Fee Related CN2157306Y (en) | 1993-07-19 | 1993-07-19 | Expanding and cleaning drill tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2157306Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182177A (en) * | 2011-04-02 | 2011-09-14 | 韩顺和 | Integrated machine capable of drilling holes, rotating and expanding disk and cleaning holes |
| CN103924938A (en) * | 2014-05-09 | 2014-07-16 | 重庆大学 | Drill bit, device and method for cleaning underground coal mine gas extraction hole |
-
1993
- 1993-07-19 CN CN 93218574 patent/CN2157306Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182177A (en) * | 2011-04-02 | 2011-09-14 | 韩顺和 | Integrated machine capable of drilling holes, rotating and expanding disk and cleaning holes |
| CN102182177B (en) * | 2011-04-02 | 2012-07-25 | 韩顺和 | Integrated machine capable of drilling holes, rotating and expanding disk and cleaning holes |
| CN103924938A (en) * | 2014-05-09 | 2014-07-16 | 重庆大学 | Drill bit, device and method for cleaning underground coal mine gas extraction hole |
| CN103924938B (en) * | 2014-05-09 | 2016-01-20 | 重庆大学 | A kind of coal mine gas drainage holes scouring bit, hole cleaning device and clear hole method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |