CN201851017U - Down-the-hole concentric simultaneous casing hole expanding drilling tool - Google Patents
Down-the-hole concentric simultaneous casing hole expanding drilling tool Download PDFInfo
- Publication number
- CN201851017U CN201851017U CN2010206163584U CN201020616358U CN201851017U CN 201851017 U CN201851017 U CN 201851017U CN 2010206163584 U CN2010206163584 U CN 2010206163584U CN 201020616358 U CN201020616358 U CN 201020616358U CN 201851017 U CN201851017 U CN 201851017U
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- China
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- hole
- pipe
- reaming
- drilling tool
- shoe
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Abstract
The utility model discloses a down-the-hole concentric simultaneous casing hole expanding drilling tool, which comprises a center drill bit, a pipe boot, elastic clamp rings and a hole expanding sleeve. One end of a simultaneous casing is screwed with the pipe boot, the center drill bit is sleeved at the center of the pipe boot, a down-the-hole impacter connector is arranged at one end of the center drill bit, the hole expanding sleeve is clamped at the other end of the center drill bit, grooves matching with each other are disposed inside the hole expanding sleeve and outside the pipe boot, and the elastic clamp rings are installed in the grooves. The down-the-hole concentric simultaneous casing hole expanding drilling tool has the advantages of simple structure, fast punching rate, long service life, convenience in recycle of drills and the like, and can be used for roadbeds of newly-built roads and railways, bridge foundation reconnaissance and dam foundation reconnaissance operation of reservoir dams and river dams.
Description
Background technology
The utility model relates to a kind of down-the-hole drilling tool, and particularly a kind of down-the-hole of high blast rig bore operation that is exclusively used in is with the concentric borehole-enlarging drilling tool of pipe.
Background technology
Down-the-hole is necessary instrument in the dam foundation investigation and prospecting of roadbed, abutment prospecting, reservoir dam and the river dyke of newly-built highway, railway with the pipe borehole-enlarging drilling tool with one heart, rock drilling be essential in these work also be one of the most key operation, production capacity, cost control, efficient, benefit and safety etc. are had and significant effects, if but drilling position is in the boulder bed covering area, then can cause probing work to become very difficult.In addition, high speed development along with the city, the emerge in multitude of highrise building and municipal engineering, produced a large amount of base pit engineerings, in the city, because the restriction in adjacent building and place, base pit engineering generally adopts the supporting excavation, at pebble layer excavation ground, mode supporting foundation pit with piled anchor and spray anchor is both economical and practical method, is a difficulty the and how work of complexity solves in the above-mentioned engineering in perforation procedure yet advance at boulder bed anchor cable hole drill, the easy hole of collapsing that occurs, the problem of bit freezing thinks all that both at home and abroad the most effective way is to adopt the drilling tool band to solve with pipe and reaming cover.
After having holed, because fault of construction, yet the reaming cover breaks away from casing drilling tool and is connected existing down-the-hole with the pipe borehole-enlarging drilling tool, and the reaming cover is stayed in the deep hole can not be recycled, and has increased cost, has reduced resource utilization.
The utility model content
In order to overcome existing casing drilling tool can not reclaim the reaming cover after boring is finished technical problem, the utility model provide a kind of simple in structure, reclaim a kind of easily down-the-hole of reaming cover with the concentric borehole-enlarging drilling tool of pipe.
In order to realize above-mentioned technical purpose, the technical solution of the utility model is: a kind of down-the-hole is with the concentric borehole-enlarging drilling tool of pipe, comprise the reaming cover, center bit, with pipe, described center bit is located at pipe inner, one end of center bit is provided with the down-the-hole air hammer interface and is connected to down-the-hole air hammer by the down-the-hole air hammer interface, described reaming is overlapped an end and is installed on the sidewall of the center bit other end by inwall, it is characterized in that, also comprise shoe and snap ring, described shoe is arranged at between pipe and the reaming cover and is connected with managing and the reaming cover, the outer wall spinning of one end of shoe is on the inwall with the pipe bottom, the clamping of other end outer wall is to the inwall of reaming cover, have shoe groove and the reaming grooving that the position is complementary separately on the contact site of shoe and reaming cover, described snap ring is equipped with in described shoe groove and the formed gap of reaming grooving.
Above-mentioned a kind of down-the-hole is with the concentric borehole-enlarging drilling tool of pipe, and its described snap ring is one to have the annulus of a breach.
Above-mentioned a kind of down-the-hole is with the concentric borehole-enlarging drilling tool of pipe, and its described down-the-hole air hammer interface adopts spline to be connected with down-the-hole air hammer.
Technique effect of the present utility model is, a termination down-the-hole air hammer of reaming center bit comes transfer torque and impact energy with one heart, the center bit middle part is set with shoe, and the drive shoe is followed the center bit interlock, shoe is connected with following gas thread, the center bit head connects the reaming cover, and the diameter of reaming cover makes its broken girth greater than following external diameter of pipe greater than with the pipe diameter, punching rate is fast, before carrying brill, the rig counter-rotating, center bit breaks away from the reaming cover and is connected, snap ring in the reaming cover is stuck in the water jacket of shoe, shoe axially is connected with the reaming cover, and when carrying with pipe, shoe and reaming cover are and then mentioned, the reaming cover can not dropped in the hole, thereby realized the recycling of reaming cover, and had simple in structurely that punching rate is fast, life-span is long, reclaim reaming and overlap advantages such as convenient.
The utility model is described in further detail below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 follows the concentric borehole-enlarging drilling tool structural representation of pipe for down-the-hole;
Fig. 2 is reaming cover and center bit connection diagram;
Schematic diagram when Fig. 3 is reaming cover and center bit disengaging;
Fig. 4 is the connection diagram of reaming cover and shoe.
Wherein, 1 is the reaming cover, and 2 is shoe, and 3 is snap ring, and 4 is center bit, and 5 for following pipe, and 6 is the down-the-hole air hammer interface, and 7 are the reaming grooving.
The specific embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, operating principle of the present utility model is as follows:
The down-the-hole air hammer interface 6 of center bit 4 connects down-the-hole air hammer, be used for moment of torsion and impact energy are passed to center bit 4, center bit 4 middle part adapter sleeve tubulature boots 2, and drive casing shoe 2 with center bit 4 interlocks, shoe 2 is threaded with following pipe 5, center bit 2 heads are installed with reaming cover 1, and gas enters center bit 2 from down-the-hole air hammer interface 6, carry out deslagging thereby discharge.When carrying brill, the impactor counter-rotating is several down, makes reaming cover off center drill bit draw-in groove, and center bit 2 just can enter with managing in 5.Have shoe groove and the reaming grooving 7 that the position is complementary separately on the contact site of shoe 2 and reaming cover 1, described snap ring 3 is equipped with in shoe groove and the formed gap of reaming grooving, because reaming cover 1 is equipped with snap ring 3 with shoe 2, when mentioning with pipe, shoe and reaming cover also can and then be mentioned, thereby make reaming overlap recyclable utilization.
Claims (3)
1. a down-the-hole is with the concentric borehole-enlarging drilling tool of pipe, comprise reaming cover (1), center bit (4), with pipe (5), described center bit (4) is located at pipe inner, one end of centre drill (4) head is provided with down-the-hole air hammer interface (6) and is connected to down-the-hole air hammer by down-the-hole air hammer interface (6), described reaming cover (1) one end is installed on the sidewall of center bit (4) other end by inwall, it is characterized in that, also comprise shoe (2) and snap ring (3), described shoe (2) is arranged at between pipe (5) and the reaming cover (1) and is connected with managing (5) and reaming cover (1), the outer wall spinning of one end of shoe (2) is on the inwall with pipe (5) bottom, the clamping of other end outer wall is to the inwall of reaming cover (1), have shoe groove and the reaming grooving (7) that the position is complementary separately on the contact site of shoe (2) and reaming cover (1), described snap ring (3) is equipped with in described shoe groove and the formed gap of reaming grooving.
2. a kind of down-the-hole according to claim 1 is characterized in that with the concentric borehole-enlarging drilling tool of pipe described snap ring (3) is one to have the annulus of a breach.
3. a kind of down-the-hole according to claim 1 is characterized in that with the concentric borehole-enlarging drilling tool of pipe described down-the-hole air hammer interface (6) adopts spline to be connected with down-the-hole air hammer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206163584U CN201851017U (en) | 2010-11-18 | 2010-11-18 | Down-the-hole concentric simultaneous casing hole expanding drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206163584U CN201851017U (en) | 2010-11-18 | 2010-11-18 | Down-the-hole concentric simultaneous casing hole expanding drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201851017U true CN201851017U (en) | 2011-06-01 |
Family
ID=44093416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206163584U Expired - Lifetime CN201851017U (en) | 2010-11-18 | 2010-11-18 | Down-the-hole concentric simultaneous casing hole expanding drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201851017U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112252980A (en) * | 2020-09-29 | 2021-01-22 | 湖南新金刚工程机械有限公司 | Down-the-hole concentric following pipe expanding drilling tool |
| CN115229433A (en) * | 2022-06-16 | 2022-10-25 | 长沙天和钻具机械有限公司 | Machining process of concentric casing drilling tool reaming sleeve assembly |
-
2010
- 2010-11-18 CN CN2010206163584U patent/CN201851017U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112252980A (en) * | 2020-09-29 | 2021-01-22 | 湖南新金刚工程机械有限公司 | Down-the-hole concentric following pipe expanding drilling tool |
| CN115229433A (en) * | 2022-06-16 | 2022-10-25 | 长沙天和钻具机械有限公司 | Machining process of concentric casing drilling tool reaming sleeve assembly |
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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: 20110601 |