CN211647984U - Device for improving rock-entering efficiency of rotary drilling rig - Google Patents
Device for improving rock-entering efficiency of rotary drilling rig Download PDFInfo
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- CN211647984U CN211647984U CN202020223381.0U CN202020223381U CN211647984U CN 211647984 U CN211647984 U CN 211647984U CN 202020223381 U CN202020223381 U CN 202020223381U CN 211647984 U CN211647984 U CN 211647984U
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Abstract
The utility model discloses an improve equipment of dig rig soon and go into rock efficiency, including digging rig, air compressor machine, high-pressure tuber pipe, impacter, down-the-hole hammer and quick conversion equipment soon, the utility model discloses the beneficial effect who brings as follows: 1. the pneumatic down-the-hole hammer drilling process and the rotary drilling rig drilling process are combined, so that rotary drilling can be realized, and impact rotary drilling can be performed by using the pneumatic down-the-hole hammer, so that the drilling requirement in a hard stratum is met, the problems that the ground slips and cannot be scaled and cannot be constructed in the hard stratum when the conventional rotary drilling rig drills in the hard stratum can be effectively solved, the construction efficiency of the rotary drilling rig in the hard stratum is improved, and the construction progress is accelerated; 2. the down-the-hole hammer and the rotary drilling rig are combined for drilling construction, the advantage that the pneumatic down-the-hole hammer is high in construction speed of hard and brittle rock strata is fully exerted, drilling construction efficiency of the rotary drilling rig in medium and hard rock strata is greatly improved, and the application range of the existing rotary drilling rig is widened.
Description
Technical Field
The utility model relates to a geotechnical engineering construction field especially relates to a dig construction equipment that rig and pneumatic impact down-the-hole hammer combination creeps into pore-forming soon.
Background
The cast-in-situ bored pile has the advantages of high bearing capacity, wide application range and the like, and is a main foundation form of high-speed railways, expressways and urban industrial civil buildings. The construction of the rock-socketed cast-in-place pile currently comprises construction processes such as impact hole forming and rotary hole forming, but the conventional construction processes have low construction efficiency, high cost and long construction period. The rotary drilling construction process has high construction speed and high hole forming efficiency, and can perform hole forming operation on strata such as filled soil, clay, silt, sandy soil, even cobblestone, pure rock and the like by matching with a proper drilling tool. However, the construction in the medium and hard rock strata which are relatively complete and have no developed bedding cracks also has the problems of low construction speed, low efficiency and the like, and the existing rotary drilling rig always has no strength.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an improve equipment and construction method that dig rig soon and go into rock efficiency uses this equipment can drop into with less and has improved the ability of going into rock of digging the rig soon greatly, drops into less air compressor machine power promptly and carries out the breakage in advance to the rock to make the great improvement of existing dig rig soon its ability of going into rock.
In order to achieve the above purpose, the specific scheme of the utility model is as follows: an apparatus for improving the rock-entering efficiency of a rotary drilling rig comprises the rotary drilling rig, an air compressor, a high-pressure air pipe, an impactor, a down-the-hole hammer and a rapid conversion device,
the upper part of the rapid conversion device is provided with a square opening which is in adaptive connection with the rotary drilling rod, the lower part of the rapid conversion device is connected with an impact drilling rod, the impact drilling rod is provided with a high-pressure air pipe anti-winding device, and the lower part of the rapid conversion device is connected with an impactor and a down-the-hole hammer;
the rotary drilling rod is connected with a square opening of the quick conversion device through a fixing pin;
the high-pressure air pipe anti-winding device is a structure that the core pipe can vertically rotate in the shell and transmit torque and pressure from a drill rod of the rotary drilling rig; the high-pressure air pipe is connected with the shell and is fixed relative to the core pipe;
the quick switching device and the high-pressure air pipe anti-winding device not only transmit torque and pressure from a drill rod of the rotary drilling rig, but also transmit high-pressure air generated by the air compressor to the impacter through the high-pressure air pipe and the air pipe anti-winding device, and the impacter drives the down-the-hole hammer to crush rocks.
The utility model discloses the beneficial effect who brings as follows:
1. the pneumatic down-the-hole hammer drilling process and the rotary drilling rig drilling process are combined, so that rotary drilling can be realized, and impact rotary drilling can be performed by using the pneumatic down-the-hole hammer, so that the drilling requirement in a hard stratum is met, the problems that the ground slips and cannot be scaled and cannot be constructed in the hard stratum when the conventional rotary drilling rig drills in the hard stratum can be effectively solved, the construction efficiency of the rotary drilling rig in the hard stratum is improved, and the construction progress is accelerated;
2. the down-the-hole hammer and the rotary drilling rig are combined for drilling construction, the advantage that the pneumatic down-the-hole hammer is high in construction speed of hard and brittle rock strata is fully exerted, drilling construction efficiency of the rotary drilling rig in medium and hard rock strata is greatly improved, and the application range of the existing rotary drilling rig is widened.
Drawings
Fig. 1 is a schematic structural diagram of a field working state of the present invention;
FIG. 2 is a schematic view of the structure of the down-the-hole hammer of the present invention;
in the figure: 1. a rotary drilling rig; 2. an air compressor; 3. a high pressure air duct; 4. rotary excavating a drill rod; 5. a fast switching device; 6. a fixing pin; 7. an impactor; 8. a down-the-hole hammer; 9. the high-pressure air pipe is provided with an anti-winding device; 10. the drill pipe is impacted.
Detailed Description
The technical solution is described in detail below with reference to the accompanying drawings and the detailed description
As shown in the figure, the device for improving the rock-entering efficiency of the rotary drilling rig comprises a rotary drilling rig 1, an air compressor 2, a high-pressure air pipe 3, an impactor 7, a down-the-hole hammer 8 and a rapid conversion device 5,
the upper part of the rapid conversion device is provided with a square opening which is in adaptive connection with the rotary drilling rod 4, the lower part of the rapid conversion device is connected with an impact drilling rod 10, the impact drilling rod is provided with a high-pressure air pipe anti-winding device 9, and the lower part of the rapid conversion device is connected with an impactor 7 and a down-the-hole hammer 8;
the rotary drilling rod 4 is connected with a square opening of the quick conversion device 5 through a fixing pin 6;
the high-pressure air pipe anti-winding device 9 is a structure that the core pipe can vertically rotate in the shell and transmits torque and pressure from a drill rod of the rotary drilling rig; the high-pressure air pipe is connected with the shell and is fixed relative to the core pipe;
the quick conversion device 5 and the high-pressure air pipe anti-winding device 9 transmit torque and pressure from a drill rod of the rotary drilling rig, high-pressure air generated by the air compressor is transmitted to the impactor through the high-pressure air pipe and the air pipe anti-winding device, and the impactor drives the down-the-hole hammer to crush rocks.
The working process and principle of the equipment are as follows:
1. the rotary drilling rig and the down-the-hole hammer are combined to drill for hole forming, a conventional rotary drilling rig is adopted for hole forming operation, and a proper drilling tool (drill bit) is matched to perform hole forming operation on stratums such as soil filling, clay, silt, sandy soil, a sand gravel layer and soft-medium hard fracture bedding developing bedrock.
2. When a medium-hard bedrock stratum (a pile hole rock embedding part) which is relatively complete and has no bedding crack develops is encountered, a conventional rotary drilling rig is adopted for construction, particularly when a small and medium-sized rotary drilling rig has great difficulty, the drilling is lifted at the moment, the conventional rotary drilling rig is replaced by a down-the-hole hammer for drilling through a quick conversion device, the hard rock of the rock embedding part is uniformly drilled into holes along the horizontal section of the pile hole, the number and the density of the holes are different according to the size of the pile diameter and the size of the hardness of the rock, so that the rock forms a honeycomb shape, and a plurality of tiny broken cracks are also caused to rock at the sides of the honeycomb in the process of drilling into the honeycomb.
3. After the honeycomb crushing of a certain density is finished on the rock-socketed part, the conventional rotary drilling bit such as a barrel bit, a cutting tooth, a short spiral bit or a small bit is used for conventional drilling instead of the conventional rotary drilling bit, and when the drilling is difficult and the rock-socketed depth is not reached yet, the drilling honeycomb crushing and combined drilling process is repeated until the designed rock-socketed depth is reached.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (4)
1. The equipment for improving the rock-entering efficiency of the rotary drilling rig is characterized by comprising the rotary drilling rig, an air compressor, a high-pressure air pipe, an impactor, a down-the-hole hammer and a quick conversion device; high-pressure air generated by the air compressor is transmitted to the impactor through the high-pressure air pipe and the air pipe anti-winding device, and the impactor drives the down-the-hole hammer to crush the rock;
the upper part of the rapid conversion device is provided with a square opening which is in adaptive connection with the rotary drilling rod, the lower part of the rapid conversion device is connected with an impact drilling rod, the impact drilling rod is provided with a high-pressure air pipe anti-winding device, and the lower part of the rapid conversion device is connected with an impactor and a down-the-hole hammer.
2. The device for improving the rock-entering efficiency of the rotary drilling rig according to claim 1, wherein the rotary drilling rod is connected with a square opening of the quick conversion device through a fixing pin.
3. The equipment for improving the rock-entering efficiency of the rotary drilling rig according to claim 1, wherein the high-pressure air pipe anti-winding device is a structure that a core pipe can vertically rotate in a shell and transmits torque and pressure from a drill rod of the rotary drilling rig; the high-pressure air pipe is connected with the shell and is fixed relative to the core pipe.
4. The device for improving the rock-entering efficiency of the rotary drilling rig according to claim 1, wherein the rapid conversion device and the high-pressure air pipe anti-winding device transmit torque and pressure from the rotary drilling rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020223381.0U CN211647984U (en) | 2020-02-27 | 2020-02-27 | Device for improving rock-entering efficiency of rotary drilling rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020223381.0U CN211647984U (en) | 2020-02-27 | 2020-02-27 | Device for improving rock-entering efficiency of rotary drilling rig |
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| CN211647984U true CN211647984U (en) | 2020-10-09 |
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| CN202020223381.0U Active CN211647984U (en) | 2020-02-27 | 2020-02-27 | Device for improving rock-entering efficiency of rotary drilling rig |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216847A (en) * | 2021-05-21 | 2021-08-06 | 瑞腾基础工程技术（北京）股份有限公司 | Prestressed anchor cable pore-forming method suitable for rock-soil intersection complex stratum |
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2020
- 2020-02-27 CN CN202020223381.0U patent/CN211647984U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216847A (en) * | 2021-05-21 | 2021-08-06 | 瑞腾基础工程技术（北京）股份有限公司 | Prestressed anchor cable pore-forming method suitable for rock-soil intersection complex stratum |
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