CN213573912U - Reverse circulation drill bit under pebble layer geological condition - Google Patents
Reverse circulation drill bit under pebble layer geological condition Download PDFInfo
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- CN213573912U CN213573912U CN202021786533.4U CN202021786533U CN213573912U CN 213573912 U CN213573912 U CN 213573912U CN 202021786533 U CN202021786533 U CN 202021786533U CN 213573912 U CN213573912 U CN 213573912U
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Abstract
The utility model relates to a drilling equipment field discloses a reverse circulation rig drill bit under pebble layer geological conditions, including cylindrical bore a section of thick bamboo, knife rest, drag for stone subassembly, closing plate, joint. The cylindrical drill barrel is provided with an accommodating cavity, the tool rest is a double-wing scraper type tool rest and is arranged at the bottom of the cylindrical drill barrel, the stone fishing component is arranged at the joint of the tool rest and the cylindrical drill barrel and used for squeezing stones into the cylindrical drill barrel, the sealing plate is arranged at the top of the cylindrical drill barrel and used for sealing the cylindrical drill barrel, and the joint is arranged at the top of the sealing plate and used for connecting a drill rod of a drilling machine. The utility model discloses a set up cylindrical drill barrel and drag for the stone subassembly, when meetting the cobble geology, the cobble is because the extrusion force of rig gets into inside the cylindrical drill barrel through dragging for the stone subassembly to reach the purpose of collecting, cleaing away the cobble, improved and be drilling efficiency, make the construction purpose can accomplish better.
Description
Technical Field
The utility model relates to a drilling equipment field specifically, relates to a reverse circulation rig drill bit under pebble layer geological conditions.
Background
In the process of forming holes in a cast-in-place pile in power transmission and transformation projects and similar projects needing pile foundations, when reverse circulation drilling is carried out to a certain depth, geological conditions such as pebbles and the like are often met, and in the drilling process, the drilling efficiency is influenced due to the existence of pebbles.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a reverse circulation rig drill bit under pebble layer geological conditions, reverse circulation rig drill bit can be when drilling with the pebble storage under this pebble layer geological conditions, reduces the pebble to the influence that punches, improves the efficiency of punching.
In order to achieve the above object, the utility model provides a reverse circulation rig drill bit under pebble layer geological conditions, include:
the cylindrical drill cylinder is provided with an accommodating cavity;
the tool rest is a double-wing scraper type tool rest and is arranged at the bottom of the cylindrical drill barrel;
the stone fishing component is arranged at the joint of the tool rest and the cylindrical drill barrel and is used for extruding stones into the cylindrical drill barrel;
the sealing plate is arranged at the top of the cylindrical drilling barrel and used for sealing the cylindrical drilling barrel;
the joint is arranged at the top of the sealing plate and used for connecting a drill rod of the drilling machine.
Preferably, the stone salvaging assembly comprises:
the fixing ring is arranged at the joint of the tool rest and the cylindrical drill cylinder;
the steel wire rope is provided with a plurality of steel wire ropes, one ends of the steel wire ropes are fixedly connected with the inner side of the fixing ring and are uniformly distributed along the circumferential direction of the fixing ring, and the other ends of the steel wire ropes are in lap joint with other steel wire ropes.
Preferably, a plurality of tool bits are uniformly distributed on the outer side of the tool rest and are all perpendicular to the connecting surface of the tool rest.
Preferably, a stiffening steel plate is welded on the inner side of the tool rest.
Preferably, a bin gate is arranged on the side surface of the cylindrical drilling barrel.
Preferably, an isolation net is arranged at the position 18-22cm away from the sealing plate on the inner side of the cylindrical drill cylinder.
Preferably, the mesh diameter of the isolation mesh is smaller than the diameter of the drill rod.
Through the technical scheme, the utility model discloses a reverse circulation rig drill bit under pebble layer geological conditions through setting up cylindrical drill barrel and dragging for the stone subassembly, when meetting the cobble geology, the cobble is because the extrusion force of rig gets into inside the cylindrical drill barrel through dragging for the stone subassembly to reach the purpose of collecting, cleaing away the cobble, improved and to be drilling efficiency, make the construction purpose can accomplish better.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic structural diagram of a reverse circulation drill bit under a pebble bed geological condition according to an embodiment of the invention;
FIG. 2 illustrates a cross-sectional view of a reverse circulation drill bit in a pebble bed geological condition in accordance with an embodiment of the present invention;
fig. 3 shows a schematic structural diagram of a rock fishing assembly of the reverse circulation drill bit of the utility model under the geological condition of the pebble bed.
In the figure:
1. cylindrical drill barrel 2 and tool rest
3. Drag for stone subassembly 31, solid fixed ring
32. Wire rope 4, sealing plate
5. Joint 6, tool bit
7. Stiffening steel plate 8, door
9. Isolation net
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
Fig. 1 shows a schematic structural diagram of a reverse circulation drill bit under a pebble bed geological condition according to an embodiment of the invention; fig. 2 shows a cross-sectional view of a reverse circulation drill bit in a pebble bed geological condition according to an embodiment of the present invention. Referring to fig. 1 and 2, the embodiment discloses a reverse circulation drill bit under geological conditions of a pebble bed, which comprises a cylindrical drill barrel 1, a tool rest 2, a stone fishing assembly 3, a sealing plate 4 and a joint 5. Wherein, cylindrical bore section of thick bamboo 1 is provided with and holds the chamber, and knife rest 2 scrapes board formula knife rest for the double wing, sets up in the bottom of cylindrical bore section of thick bamboo 1, drags for stone subassembly 3 to set up in the junction of knife rest 2 and cylindrical bore section of thick bamboo 1 for crowd into cylindrical bore section of thick bamboo 1 inside with the stone, and closing plate 4 sets up in the top of cylindrical bore section of thick bamboo 1 for sealed cylindrical bore section of thick bamboo 1, connects 5 to set up in the top of closing plate 4, is used for connecting the drilling rod of rig.
When the drilling tool works in the embodiment, the drilling tool is connected with a drill rod of the drilling machine through the joint 5, then drilling is started, and pebbles can enter the cylindrical drill barrel 1 under the action of the stone fishing component 3 in the drilling process so as to achieve the purpose of collecting the pebbles, so that the drilling efficiency is improved.
Referring to fig. 3, the stone scooping assembly 3 may include a fixing ring 31 and a wire rope 32. The fixing ring 31 is arranged at the joint of the tool rest 2 and the cylindrical drill barrel 1, the steel wire ropes 32 are provided with a plurality of steel wire ropes 32, one ends of the steel wire ropes 32 are fixedly connected with the inner side of the fixing ring 31 and are uniformly distributed along the circumferential direction of the steel wire ropes, the other ends of the steel wire ropes are in lap joint with other steel wire ropes 32, the steel wire meshes are spliced by the plurality of steel wire ropes 32, and under the condition that pebbles exist, the steel wire meshes are utilized to extrude large stones into the cylindrical drill barrel 1, so that the purpose of collecting the pebbles is achieved, and the drilling efficiency is improved. The diameter of the drill barrel can be made into different sizes according to the requirements of the on-site pile foundation, in the embodiment, the diameter of the drill barrel is 1.2mm, and the diameter of the steel wire rope 32 is 15.5 mm.
Preferably, a plurality of tool bits 6 are uniformly distributed on the outer side of the tool rest 2, the tool bits 6 are perpendicular to the connecting surface of the tool rest 2, the tool bits 6 are made of alloy steel, and the arrangement of the tool bits 6 reduces the diameter of the drill cylinder, improves the drilling speed and simultaneously reduces the probability of reaming and over-digging. The inboard of knife rest 2 has still welded stiffening steel plate 7, and stiffening steel plate 7 is provided with two, sets up respectively in the inside both sides of knife rest 2, when strengthening the moment of torsion of knife rest 2, has the effect of gathering together great cobble to dragging for stone subassembly 3 in addition for the collection that the cobble can be better.
In addition, the side of the cylindrical drill barrel 1 is provided with a bin gate 8, the bin gate 8 can be opened and closed according to needs, when drilling is carried out, the bin gate 8 is closed to collect pebbles, and when drilling is completed, the bin gate 8 is opened to fish out the pebbles in the cylindrical drill barrel 1 so as to clear the pebbles. The inner side of the cylindrical drill barrel 1 is further provided with an isolation net 9, the distance between the isolation net 9 and the sealing plate 4 is 18-22cm, preferably 20cm, the isolation net 9 is formed by welding steel bars and used for isolating pebbles, the mesh diameter of the isolation net 9 is smaller than that of a drill rod, the situation that a larger stone block enters the drill rod to cause blockage is prevented, and smooth drilling is guaranteed.
Through the technical scheme, the utility model discloses a reverse circulation rig drill bit under pebble layer geological conditions through setting up cylindrical drill barrel 1 and dragging for stone subassembly 3, when meetting the pebble geology, the pebble is because the extrusion force of rig gets into inside cylindrical drill barrel 1 through dragging for stone subassembly 3 to reach the purpose of collecting, cleaing away the pebble, improved and is drilling efficiency, make the construction purpose can accomplish better.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention. It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.
In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.
Claims (6)
1. A reverse circulation drill bit under pebble bed geological conditions comprising:
the drilling device comprises a cylindrical drilling barrel (1), wherein the cylindrical drilling barrel (1) is provided with an accommodating cavity;
the tool rest (2) is a double-wing scraper type tool rest and is arranged at the bottom of the cylindrical drill barrel (1);
the stone fishing component (3) is arranged at the joint of the tool rest (2) and the cylindrical drill barrel (1) and is used for extruding stones into the cylindrical drill barrel (1);
the sealing plate (4) is arranged at the top of the cylindrical drilling barrel (1) and used for sealing the cylindrical drilling barrel (1);
the joint (5) is arranged at the top of the sealing plate (4) and is used for connecting a drill rod of the drilling machine;
the stone fishing component (3) comprises:
the fixing ring (31), the said fixing ring (31) is set up in the junction of the knife rest (2) and cylindrical bore tube (1);
the steel wire rope (32), steel wire rope (32) are provided with a plurality of, a plurality of steel wire rope (32)'s one end all with the inboard fixed connection of solid fixed ring (31) and along its circumferencial direction evenly distributed, the other end and other steel wire rope (32) overlap joint.
2. The reverse circulation drill bit under the geological condition of the pebble bed as claimed in claim 1, characterized in that a plurality of cutter heads (6) are uniformly distributed on the outer side of the cutter rest (2), and the cutter heads (6) are all perpendicular to the connecting surface of the cutter rest (2).
3. The reverse circulation drill bit under pebble bed geological conditions of claim 1, characterized in that a stiffening steel plate (7) is welded on the inner side of the tool rest (2).
4. The reverse circulation drill bit under pebble bed geological conditions of claim 1, characterized in that the side of the cylindrical drill barrel (1) is provided with a bin gate (8).
5. The reverse circulation drill bit under the geological condition of the pebble bed is characterized in that an isolation net (9) is arranged at a position 18-22cm away from a sealing plate (4) inside the cylindrical drill cylinder (1).
6. A reverse circulation drill bit in pebble bed geological conditions according to claim 5, characterized in that the mesh diameter of the isolation mesh (9) is smaller than the diameter of the drill rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021786533.4U CN213573912U (en) | 2020-08-24 | 2020-08-24 | Reverse circulation drill bit under pebble layer geological condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021786533.4U CN213573912U (en) | 2020-08-24 | 2020-08-24 | Reverse circulation drill bit under pebble layer geological condition |
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| Publication Number | Publication Date |
|---|---|
| CN213573912U true CN213573912U (en) | 2021-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021786533.4U Active CN213573912U (en) | 2020-08-24 | 2020-08-24 | Reverse circulation drill bit under pebble layer geological condition |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114753793A (en) * | 2022-03-23 | 2022-07-15 | 中铁十局集团青岛工程有限公司 | Drill bit is collected to dregs for reverse circulation rig |
-
2020
- 2020-08-24 CN CN202021786533.4U patent/CN213573912U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114753793A (en) * | 2022-03-23 | 2022-07-15 | 中铁十局集团青岛工程有限公司 | Drill bit is collected to dregs for reverse circulation rig |
| CN114753793B (en) * | 2022-03-23 | 2024-01-16 | 中铁十局集团青岛工程有限公司 | Slag soil collecting drill bit for reverse circulation drilling machine |
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