CN103541661A - Reamer bit - Google Patents
Reamer bit Download PDFInfo
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- CN103541661A CN103541661A CN201310314267.3A CN201310314267A CN103541661A CN 103541661 A CN103541661 A CN 103541661A CN 201310314267 A CN201310314267 A CN 201310314267A CN 103541661 A CN103541661 A CN 103541661A
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- reaming
- cutter
- hole
- skewed slot
- guiding skewed
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Abstract
The invention discloses a reamer bit which comprises a drilling unit and a reaming unit. The drilling unit and the reaming unit rotate synchronously along with a drill pipe. The reaming unit comprises a fixing portion, a locating ring and a reaming cutter. A guiding chute is concavely formed in the outer side face of the fixing portion and comprises a first inclining side wall and a second inclining side wall. The depth of one end of the guiding chute is larger than that of the other end of the guiding chute. The locating ring penetrates through the fixing portion and arranged on the fixing portion in a sleeved mode, a through hole is formed in the locating ring, and the reaming cutter is contained in the guiding chute and the through hole. When the drilling unit rotates forwards and conducts drilling, the reaming cutter abuts against the first inclining side wall and moves to one end of the guiding chute along the first inclining side wall, and therefore the reaming cutter is separated from the side wall of a hole. When the reaming unit rotates reversely, the reaming cutter abuts against the second inclining side wall and moves to the other end of the guiding chute along the second inclining side wall, so that the reaming cutter extends out of the through hole and conducts cutting on the side wall of the hole. The reaming cutter can cut the side wall of the drilled hole, so that the reamer bit has the advantage of reaming.
Description
Technical field
The present invention relates to a kind of reaming bit, particularly relate to the reaming bit using in a kind of construction work.
Background technology
Adopt rig to hole, be subject to the impact of drill bit, be merely able to get out the unique hole in aperture.The unique hole of diameter in particular cases can not meet construction requirement at some.Such as the rock stratum needing explosion, the inside that people wish to lay the hole of explosive has larger sectional area, preferably can occur the structure that stress is concentrated, makes rock stratum occur plane of weakness, thereby strengthens demolition effect.Again such as, when making anchor shaft anchor cable, people wish that the sectional area of the inside in hole is greater than the sectional area of the opening in hole equally, thereby increase the frictional resistance of anchor shaft anchor cable in boring, make anchor shaft anchor cable pulling test strength high.
But existing drill bit cannot carry out reaming to the inside in hole, cannot meet the construction requirement of special occasions.
Summary of the invention
The invention provides a kind of reaming bit, it has overcome the existing deficiency of background technology.The technical solution adopted for the present invention to solve the technical problems is:
A kind of reaming bit, comprise and synchronize the units of rotating with drilling rod, this units is provided with brill sheet, it is characterized in that: also comprise reaming unit, this reaming unit is positioned at this units top, this reaming unit comprises fixed part, locating ring and expansion cutter, this fixed part is synchronizeed and is rotated with drilling rod, on the lateral surface of this fixed part, be concaved with guiding skewed slot, this guiding skewed slot comprises the first oblique sidewall and the second oblique sidewall, the degree of depth of this guiding skewed slot one end is greater than the degree of depth of its other end, this locating ring is set on this fixed part, this locating ring is provided with through hole, this expansion cutter is housed in this guiding skewed slot and this through hole,
When this units forward is holed, this expansion cutter and this first oblique sidewall butt also move to one end of this guiding skewed slot along this first oblique sidewall, and the sidewall in this expansion cutter and hole is separated;
During this reaming unit reversion, this expansion cutter and this second oblique sidewall butt also move to the other end of this guiding skewed slot along this second oblique sidewall, and this expansion cutter stretches out this through hole and the sidewall in hole is cut.
Among one preferred embodiment: this reaming unit also comprises elastic component, this elastic component bullet withstands between this locating ring and this expansion cutter.
Among one preferred embodiment: this expansion cutter comprises cutter head and contiguous block, this cutter head and this contiguous block are threaded togather.
Among one preferred embodiment: convex with back-up ring on the external surface of this cutter head, this reaming unit also comprises elastic component, and this elastic component bullet withstands between this locating ring and this back-up ring.
Among one preferred embodiment: the angle of this guiding skewed slot and this drilling rod is between 20 degree-70 degree.
Among one preferred embodiment: the quantity of this guiding skewed slot, this through hole, this expansion cutter is three, described these guiding skewed slots, through hole, expansion cutter are evenly arranged, and the angle between two adjacent expansion cuttves is 120 degree.
Among one preferred embodiment: the cylindrical shape of this fixed part.
Among one preferred embodiment: the quantity of this brill sheet is four, described these bore sheet and are uniformly distributed, and two adjacent angles that bore between sheet are 90 degree.
Among one preferred embodiment: this guiding skewed slot one end is positioned at the below of its other end.
The technical program is compared with background technology, and its tool has the following advantages:
1. when drilling rod forward, the synchronous forward of this units is holed, this expands cutter and this first oblique sidewall butt, due to this first oblique sidewall slope setting, this expansion cutter act on pressure on this first oblique sidewall be divided into the component vertical with this first oblique sidewall and with the component of this first oblique parallel sidewalls, under the effect of the component with this first oblique parallel sidewalls, this expansion cutter drives this locating ring to move together, make this expansion cutter move to one end of this guiding skewed slot, because the degree of depth of this guiding skewed slot one end is large, therefore, this expand cutter not can with the sidewall contact in hole, this units gets out the constant boring in aperture, when drilling rod reverses, during this reaming units synchronization reversion, due to this second oblique sidewall slope setting, this expansion cutter act on pressure on this two oblique sidewall be divided into the component vertical with this second oblique sidewall and with the component of this second oblique parallel sidewalls, under the effect of the component with this second oblique parallel sidewalls, this expansion cutter drives this locating ring to move together, make this expansion cutter move to the other end of this guiding skewed slot, because the degree of depth of this guiding skewed slot other end is little, therefore, this expansion cutter stretches out this through hole and the sidewall of boring is cut.Due in reversion, this expansion cutter can cut the sidewall of boring, and therefore, this reaming bit has advantages of reaming.
2. because this expansion cutter can cut the sidewall of boring, therefore, the part of described cutting is more fragile, easily explosion is carried out in rock stratum.In addition, in boring, can the sidewall of boring be cut the identical distance in interval, make the volume of the carg after explosion substantially identical, avoid fragment to carry out secondary blasting.
3. because this expansion cutter can cut the sidewall of boring, mud is circulated into after boring, and the frictional force between mud and the sidewall of boring is greatly improved, and makes anchor shaft anchor cable pulling test strength high.
4. this reaming unit also comprises elastic component, and this elastic component bullet withstands between this locating ring and this expansion cutter, make to expand cutter all the time with the diapire butt of this guiding skewed slot, guarantee in forward, this expansion cutter can not cut the sidewall of boring.
5. this expansion cutter comprises cutter head and contiguous block, and this cutter head and this contiguous block are threaded togather, and easily this cutter head are changed, are keeped in repair.
6. this guiding skewed slot one end is positioned at the below of its other end, because the degree of depth of this guiding skewed slot one end is large, therefore, under Action of Gravity Field, expanding cutter can move towards this guiding skewed slot one end automatically, avoids expanding the sidewall contact of cutter and boring, conveniently from boring, takes out this reaming bit.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
The master that Fig. 1 has illustrated a kind of reaming bit of the present invention looks schematic diagram.
Fig. 2 has illustrated the cross-sectional schematic of the guiding skewed slot of a kind of reaming bit shown in Fig. 1.
Fig. 3 has illustrated the cross-sectional schematic of the expansion cutter of a kind of reaming bit shown in Fig. 1.
Fig. 4 has illustrated the cross-sectional schematic of a kind of locating ring of reaming bit shown in Fig. 1.
Fig. 5 has illustrated the expansion cutter spacing of a kind of reaming bit shown in Fig. 1 in the schematic diagram of one end of guiding skewed slot.
Fig. 6 has illustrated the expansion cutter spacing of a kind of reaming bit shown in Fig. 1 in the schematic diagram of the other end of guiding skewed slot.
Fig. 7 has illustrated the schematic diagram that utilizes the boring that shown in Fig. 1, a kind of reaming bit gets out.
The specific embodiment
Please refer to Fig. 1, a kind of reaming bit of the present invention, comprises a units 10 and a reaming unit 20.Rotation is synchronizeed in this units 10, this reaming unit 20 with drilling rod 30.This units 10 can be connected with this drilling rod 30 respectively with this reaming unit 20, can be also to link into an integrated entity to be connected with this drilling rod 30 again.
This units 10 is for getting out the constant hole of diameter.This units 10 is provided with four and bores sheet 12, and described these bore sheet 12 and are uniformly distributed, and two adjacent angles that bore between sheet 12 are 90 degree.As long as described units 10 can be used in boring, therefore, this units 10 can adopt drill bit structure relevant in prior art.
This reaming unit 20 is positioned at this units 10 tops.This reaming unit 20 cuts for the sidewall in hole that this units 10 is got out, expands the cross sectional area of boring.This reaming unit 20 comprises that a fixed part 22, a locating ring 24, three expansion cuttves 26 and three elastic component 28(are as shown in Figure 5).
Please refer to Fig. 1 and Fig. 2, the cylindrical shape of this fixed part 22.On the lateral surface of this fixed part 22, be concaved with three guiding skewed slots 222.Described these guiding skewed slots 222 are evenly arranged, and the angle between two adjacent guiding skewed slots 222 is 120 degree.The angle of this guiding skewed slot 222 and this drilling rod 30 is between 20 degree-70 degree.This guiding skewed slot 222 comprises one first oblique sidewall 2221, one second oblique sidewall 2222 and a diapire 2223.The degree of depth of these guiding skewed slot 222 lower ends 2225 is greater than the degree of depth of its upper end 2224.
Please refer to Fig. 3, this expansion cutter 26 comprises a cutter head 262 and a contiguous block 264.On the external surface of this cutter head 262, convex with a back-up ring 2622.This cutter head 262 is threaded togather with this contiguous block 264.
Please refer to Fig. 4, this locating ring 24 is provided with three through holes 242.Described these through holes 242 are evenly arranged, and the angle between two adjacent through holes 242 is 120 degree.
Please refer to Fig. 1 and Fig. 5, this fixed part 22 and this drilling rod 30 link together and synchronize rotation.Described three expansion cuttves 26 are housed in respectively in described three guiding skewed slots 222, and the angle between two adjacent expansion cuttves 26 is 120 degree.This locating ring 24 is set on this fixed part 22, and the cutter head 262 of this expansion cutter 26 is housed in this through hole 242.Described three elastic components 28 are nested with respectively on described three expansion cuttves 26, and each elastic component 28 bullet withstands between this locating ring 24 and this back-up ring 2622, make this contiguous block 264 and these diapire 2223 butts.
Please refer to Fig. 1, Fig. 5 and Fig. 7, when this drilling rod 30 drives this units 10 forward together with this reaming unit 20, along arrow N direction in Fig. 1, rotate, this expands cutter 26 and these first oblique sidewall 2221 butts, this expansion cutter 26 acts on this first oblique sidewall 2221 pressure F and is divided into the component F1 vertical with this first oblique sidewall 2221 and the component F2 parallel with this first oblique sidewall 2221, under the effect of component F2, this expansion cutter 26 drives this locating ring 24 to move together, make this expansion cutter 26 move to the lower end 2225 of this guiding skewed slot 222, because the degree of depth of lower end 2225 of this guiding skewed slot 222 is large, therefore, these expansion cutter 26 integral body are retracted in this through hole 242, not can with the sidewall contact in hole, this units 10 gets out the constant boring in aperture.
Please refer to Fig. 1, Fig. 6 and Fig. 7, when this drilling rod 30 drives this units 10 to reverse together with this reaming unit 20, this expands cutter 26 and these second oblique sidewall 2222 butts, this expansion cutter 26 acts on this second oblique sidewall 2222 pressure and is divided into the component vertical with this second oblique sidewall 2222 and the component parallel with this second oblique sidewall 2222, in like manner, under the effect of the component parallel with this second oblique sidewall 2222, this expansion cutter 26 drives this locating ring 24 to move together, make this expansion cutter 26 move to the upper end 2224 of this guiding skewed slot 222, because the degree of depth of upper end 2224 of this guiding skewed slot 222 is little, therefore, this expansion cutter 26 stretches out this through hole 242 and the sidewall of boring is cut after overcoming the elastic force of this elastic component 28, thereby expanded the inner cross sectional area of holing.
Need to when the different piece of boring is carried out reaming, only need vertically mobile this reaming bit, make this expansion cutter 26 be placed in the position that needs reaming, then make this drilling rod 30 reversions.In Fig. 7, cut six positions of 26 pairs of borings of this expansion cutter, and six cut surfaces 42 of interior formation make to hole.
The above, only for preferred embodiment of the present invention, therefore can not limit according to this scope of the invention process, the equivalence of doing according to the scope of the claims of the present invention and description changes and modifies, and all should still belong in the scope that the present invention contains.
Claims (9)
1. a reaming bit, comprise and synchronize the units of rotating with drilling rod, this units is provided with brill sheet, it is characterized in that: also comprise reaming unit, this reaming unit is positioned at this units top, this reaming unit comprises fixed part, locating ring and expansion cutter, this fixed part is synchronizeed and is rotated with drilling rod, on the lateral surface of this fixed part, be concaved with guiding skewed slot, this guiding skewed slot comprises the first oblique sidewall and the second oblique sidewall, the degree of depth of this guiding skewed slot one end is greater than the degree of depth of its other end, this locating ring is set on this fixed part, this locating ring is provided with through hole, this expansion cutter is housed in this guiding skewed slot and this through hole,
When this units forward is holed, this expansion cutter and this first oblique sidewall butt also move to one end of this guiding skewed slot along this first oblique sidewall, and the sidewall in this expansion cutter and hole is separated;
During this reaming unit reversion, this expansion cutter and this second oblique sidewall butt also move to the other end of this guiding skewed slot along this second oblique sidewall, and this expansion cutter stretches out this through hole and the sidewall in hole is cut.
2. a kind of reaming bit according to claim 1, is characterized in that: this reaming unit also comprises elastic component, and this elastic component bullet withstands between this locating ring and this expansion cutter.
3. a kind of reaming bit according to claim 1, is characterized in that: this expansion cutter comprises cutter head and contiguous block, and this cutter head and this contiguous block are threaded togather.
4. a kind of reaming bit according to claim 2, is characterized in that: on the external surface of this cutter head, convex with back-up ring, this reaming unit also comprises elastic component, and this elastic component bullet withstands between this locating ring and this back-up ring.
5. a kind of reaming bit according to claim 1, is characterized in that: the angle of this guiding skewed slot and this drilling rod is between 20 degree-70 degree.
6. a kind of reaming bit according to claim 1, is characterized in that: the quantity of this guiding skewed slot, this through hole, this expansion cutter is three, and described these guiding skewed slots, through hole, expansion cutter are evenly arranged, and the angle between two adjacent expansion cuttves is 120 degree.
7. a kind of reaming bit according to claim 1, is characterized in that: the cylindrical shape of this fixed part.
8. according to a kind of reaming bit described in any one in claim 1 to 7, it is characterized in that: the quantity of this brill sheet is four, described these bore sheet and are uniformly distributed, and two adjacent angles that bore between sheet are 90 degree.
9. a kind of reaming bit according to claim 1, is characterized in that: this guiding skewed slot one end is positioned at the below of its other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310314267.3A CN103541661B (en) | 2013-07-24 | 2013-07-24 | A kind of reaming bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310314267.3A CN103541661B (en) | 2013-07-24 | 2013-07-24 | A kind of reaming bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103541661A true CN103541661A (en) | 2014-01-29 |
| CN103541661B CN103541661B (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310314267.3A Active CN103541661B (en) | 2013-07-24 | 2013-07-24 | A kind of reaming bit |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598237A (en) * | 2004-09-24 | 2005-03-23 | 徐洁媛 | Deep hole drift tool |
| CN201013233Y (en) * | 2006-09-28 | 2008-01-30 | 马勇 | Pneumatic hammer down-hole concentric tube drill |
| CN201025046Y (en) * | 2007-01-31 | 2008-02-20 | 于鼎拯 | Driller for followed tube of wing expansion hole bushing |
| JP2010007400A (en) * | 2008-06-30 | 2010-01-14 | Nippon Concrete Ind Co Ltd | Excavating head |
| CN203383734U (en) * | 2013-07-24 | 2014-01-08 | 厦门特房建设工程集团有限公司 | Expanding bit |
-
2013
- 2013-07-24 CN CN201310314267.3A patent/CN103541661B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598237A (en) * | 2004-09-24 | 2005-03-23 | 徐洁媛 | Deep hole drift tool |
| CN201013233Y (en) * | 2006-09-28 | 2008-01-30 | 马勇 | Pneumatic hammer down-hole concentric tube drill |
| CN201025046Y (en) * | 2007-01-31 | 2008-02-20 | 于鼎拯 | Driller for followed tube of wing expansion hole bushing |
| JP2010007400A (en) * | 2008-06-30 | 2010-01-14 | Nippon Concrete Ind Co Ltd | Excavating head |
| CN203383734U (en) * | 2013-07-24 | 2014-01-08 | 厦门特房建设工程集团有限公司 | Expanding bit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103541661B (en) | 2015-09-30 |
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