CN213743285U

CN213743285U - Hydraulic reverse circulation double-wall drilling tool for drilling construction

Info

Publication number: CN213743285U
Application number: CN202021888239.4U
Authority: CN
Inventors: 郭小涛; 张雪杰; 郭春利
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-02
Filing date: 2020-09-02
Publication date: 2021-07-20
Anticipated expiration: 2030-09-02

Abstract

The utility model belongs to the technical field of drilling tools, in particular to a hydraulic reverse circulation up-drilling construction double-wall drilling tool, which comprises a drilling tool body, wherein an outer drilling rod is fixedly arranged at the upper end of the drilling tool body, a wall cavity is arranged inside the outer drilling rod, an inner drilling rod is fixedly arranged inside the wall cavity, a drilling seat is integrally formed at the upper end of the outer drilling rod, a drilling bit is arranged at the upper end of the drilling seat, a plurality of positioning insertion holes are arranged on the surface of the drilling seat, a plurality of positioning insertion shafts are integrally formed on the bottom end surface of the drilling bit, the positioning insertion holes and the positioning insertion shafts are mutually inserted, the bottom end of the positioning insertion shafts is positioned below the positioning insertion holes and is screwed and connected with a limit nut, when in use, a plurality of positioning insertion shafts on the end surface of the drilling seat are inserted into a plurality of positioning insertion holes on the end surface of the drilling seat, thereby completing the preliminary installation of the drilling bit relative to the drilling seat, and screwing the limit nut at the end of the positioning insertion shafts, thereby completing the final fixation of the drilling bit relative to the drilling seat, the drill bit at the end part of the drilling tool body is convenient to mount and dismount and convenient to replace.

Description

Hydraulic reverse circulation double-wall drilling tool for drilling construction

Technical Field

The utility model belongs to the technical field of the drilling tool, concretely relates to water conservancy reverse circulation is gone up and is bored construction double-walled drilling tool.

Background

The reverse circulation drilling refers to a drilling method that flushing medium flows to the bottom of a hole from an annular space between a drilling tool and a hole wall and carries rock debris to return to the ground surface from an inner hole of the drilling tool, and the reverse circulation has the following four advantages: the bottom of the hole is clean, so that secondary crushing of rock debris is avoided, and the drilling efficiency can be improved; less pump pressure is required to drive the flushing medium circulation; the hole wall is easy to maintain, and particularly, the double-wall pipe is used for reverse circulation drilling, so that the loss of a flushing medium can be reduced; drilling into soft rock (soil) layer can reduce the drilling cost greatly, therefore, the corresponding reverse circulation double-wall drilling tool is widely applied to the water conservancy construction field, the reverse circulation double-wall drilling tool sold on the market is convenient for the drilling-up construction in the water conservancy construction process, so that the water conservancy construction work is carried out smoothly, however, the existing reverse circulation double-wall drilling tool has the problems that the installation and the replacement of a drill bit with the end part of the drilling tool and a drill rod connected into a whole are inconvenient, after the drilling tool is used for a long time, the abrasion is serious, the drilling effect is influenced, and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned problem that exists among the prior art, the utility model provides a water conservancy reverse circulation goes up bores construction double-walled drilling tool has the ann of being convenient for and tears open and convenient to use's characteristics.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a water conservancy reverse circulation goes up bores construction double-walled drilling tool, including the drilling tool body, the upper end fixed mounting of drilling tool body has outer drilling rod, the wall chamber has been seted up to the inside of outer drilling rod, the inside fixed mounting in wall chamber has interior drilling rod, the upper end integrated into one piece of outer drilling rod has the drill seat, the upper end of drill seat is provided with the drill bit, a plurality of location jack has been seted up on the surface of drill seat, the bottom face integrated into one piece of drill bit has a plurality of location to insert the axle, location jack and location insert the axle each other insert and the location is inserted the bottom of axle and is located the below of location jack and close soon and be connected with stop nut, integrated into one piece has the broken sword of a plurality of all around of the upper end outer wall of drill bit, integrated into one piece all around the bottom outer wall of drill bit has the broken sword of a plurality of two numbers.

As the utility model discloses a preferred technical scheme of drilling construction double-walled drilling tool on water conservancy reverse circulation, drill seat and drill bit are metal component, and drill seat and drill bit are hollow structure and inside and communicate with each other, and the bottom of interior drilling rod and the upper end of drill bit are the toper structure, and the up end of drill seat closely laminates with the bottom face of drill bit.

As the utility model discloses a preferred technical scheme of construction double-walled drilling tool is bored on water conservancy reverse circulation, location jack and location spiale respectively with drill seat and drill bit mutually perpendicular.

As the utility model discloses a preferred technical scheme of construction double-walled drilling tool is bored on water conservancy reverse circulation, stop nut is the bottom face of metal component and up end and drill seat closely laminates.

As the utility model discloses a preferred technical scheme of construction double-walled drilling tool is bored on hydraulic reverse circulation, broken sword and No. two broken sword are the arc structure and all are the slope setting.

As the utility model discloses a preferred technical scheme of construction double-walled drilling tool is bored on water conservancy reverse circulation, drill seat and drill bit all with outer drilling rod mutually perpendicular.

Compared with the prior art, the beneficial effects of the utility model are that: the end of the drilling tool body is positioned at the upper end of the outer drilling rod, a drilling seat is integrally formed, a drill bit is fixedly installed at the upper end of the outer drilling rod, when the drilling tool body is used, a plurality of positioning insertion shafts of the end face of the drill bit are inserted into a plurality of positioning insertion holes of the end face of the drilling seat, the primary installation of the drill bit relative to the drilling seat is completed, a limit nut is screwed at the end of the positioning insertion shafts, the final fixation of the drill bit relative to the drilling seat is completed, the drill bit at the end of the drilling tool body is convenient to install and detach through the structure, the replacement is convenient, the operation is simple, the use is convenient, meanwhile, when the drilling tool body is used, a plurality of first broken edges at the periphery of the outer wall of the upper end of the drill bit, and a plurality of second broken edges at the periphery of the outer wall of the bottom end of the drill bit are convenient, the structural strength at the periphery of the outer wall of the drill bit is increased, the structure is simple, and the use is convenient.

Drawings

The accompanying drawings 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 invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the external structure of the present invention;

FIG. 3 is a schematic view of the connection cross-sectional structure of the drill bit of the present invention;

FIG. 4 is a schematic view of the external structure of the drill bit connection according to the present invention;

in the figure: 1. a drilling tool body; 2. an outer drill rod; 3. an inner drill rod; 4. a wall cavity; 5. a drill seat; 6. a drill bit; 7. A first breaking edge; 8. breaking the edge II; 9. positioning the jack; 10. positioning the inserted shaft; 11. and a limiting nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides the following technical solutions: the utility model provides a water conservancy reverse circulation goes up and bores construction double-walled drilling tool, including drilling tool body 1, the upper end fixed mounting of drilling tool body 1 has outer drilling rod 2, wall chamber 4 has been seted up to the inside of outer drilling rod 2, the inside fixed mounting of wall chamber 4 has interior drilling rod 3, the upper end integrated into one piece of outer drilling rod 2 has drill seat 5, the upper end of drill seat 5 is provided with drill bit 6, a plurality of location jack 9 has been seted up on the surface of drill seat 5, the bottom face integrated into one piece of drill bit 6 has a plurality of location spiale 10, location jack 9 and location spiale 10 are inserted each other and are closed and be connected with stop nut 11 with locating jack 9's bottom soon, the upper end outer wall integrated into one piece all around of drill bit 6 has a plurality of broken sword 7 No. one, the bottom outer wall integrated into one piece all around of drill bit 6 has a plurality of broken sword 8 No. two, in this embodiment, drilling tool body 1 and the outer drilling tool 2 on the drilling tool body 1, The inner drill rod 3 and the wall cavity 4 can refer to the existing reverse circulation double-wall drilling tool, when in use, the outer drill rod 2 and the inner drill rod 3 in the drilling tool body 1 are driven to rotate through an external transmission device, which is the prior art, when in use, a plurality of positioning insertion shafts 10 on the end surface of the drill bit 6 are inserted into a plurality of positioning insertion holes 9 on the end surface of the drill base 5, so as to finish the initial installation of the drill bit 6 relative to the drill base 5, and a limit nut 11 is screwed at the end part of the positioning insertion shafts 10, so as to finish the final fixation of the drill bit 6 relative to the drill base 5, the drill bit 6 at the end part of the drilling tool body 1 is convenient to install and detach through the structure, the replacement is convenient, the operation is simple, the use is convenient, and simultaneously, when in use, the drilling of the drill bit 5 at the end part of the drilling tool body 1 is convenient through a plurality of first breaking edges 7 at the periphery of the outer wall at the upper end of the drill bit 6 and a plurality of second breaking edges 8 at the periphery of the outer wall at the bottom end of the drill bit 6, and the peripheral structural strength of the outer wall of the drill bit 6 is enhanced, the structure is simple, and the use is convenient.

Specifically, the drill seat 5 and the drill bit 6 are metal members, the drill seat 5 and the drill bit 6 are hollow structures and are communicated with each other, the bottom end of the inner drill rod 3 and the upper end of the drill bit 6 are both conical structures, the upper end face of the drill seat 5 is tightly attached to the bottom end face of the drill bit 6, in the embodiment, the drill seat 5 and the drill bit 6 are metal members, the drill bit 6 can be detached and replaced relative to the drill seat 5, the operation is simple, the use is convenient and fast, and meanwhile, rock debris in the drilling process can enter the wall cavity 4 due to the hollow structures of the drill seat 5 and the drill bit 6, and the rock debris is conveyed out by a pump.

Specifically, location jack 9 and location spiale 10 respectively with bore seat 5 and drill bit 6 mutually perpendicular, in this embodiment, location jack 9 is the metal thread axle, location spiale 10 is the metal column hole, location jack 9 is inserted the axle 10 with the location and is inserted each other and close to fix through stop nut 11, stop nut 11 is the metal thread cap, through above-mentioned structure, the change is torn open to the ann of the relative bore seat 5 of drill bit 6 of being convenient for, location jack 9, location spiale 10 and stop nut 11 all are equipped with everywhere, and all are the annular and arrange.

Specifically, the limit nut 11 is a metal member, and the upper end surface of the limit nut is tightly attached to the bottom end surface of the drill base 5.

Specifically, No. one broken sword 7 and No. two broken sword 8 are the arc structure and all are the slope setting, and in this embodiment, a broken sword 7 and No. two broken sword 8 are the metal arc, all are equipped with eight, and all are the annular and arrange, and the broken of the ground of the drill bit 6 precession state of being convenient for advances, simultaneously, increases the structural strength of drill bit 6.

In particular, the drill seat 5 and the drill bit 6 are perpendicular to the outer drill rod 2.

The utility model discloses a theory of operation and use flow: the utility model discloses when using, insert a plurality of locating insertion holes 9 of 5 terminal surfaces of drill seat with a plurality of locating insertion shafts 10 of 6 terminal surfaces of drill bit, thereby accomplish the preliminary installation of 6 relative drill seats of drill bit 5, and with stop nut 11 revolve in locating insertion shafts 10's tip below of 9, and accomplish the final fixed of 6 relative drill seats of drill bit 5, then use drilling tool body 1, drill bit 6 through 1 tip of drilling tool body creeps into the ground, through a plurality of broken sword 7 of department around the outer wall of 6 upper ends of drill bit, and the broken sword 8 of a plurality of departments No. two around the outer wall of 6 bottom of drill bit, be convenient for creep into of drill bit 6, at the drilling in-process, flushing medium and the detritus that it carried in the wall chamber 4 are taken out by the pump sending through outside and the pump sending device that drilling tool body 1 links to each other, this is prior art.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a two-walled drilling tool of construction is gone up to water conservancy reverse circulation which characterized in that: comprises a drilling tool body (1), an outer drilling rod (2) is fixedly arranged at the upper end of the drilling tool body (1), a wall cavity (4) is arranged inside the outer drill rod (2), an inner drill rod (3) is fixedly arranged inside the wall cavity (4), a drill seat (5) is integrally formed at the upper end of the outer drill rod (2), a drill bit (6) is arranged at the upper end of the drill seat (5), the surface of the drill base (5) is provided with a plurality of positioning insertion holes (9), the bottom end surface of the drill bit (6) is integrally formed with a plurality of positioning insertion shafts (10), the positioning insertion hole (9) and the positioning insertion shaft (10) are mutually inserted and combined, the bottom end of the positioning insertion shaft (10) is positioned below the positioning insertion hole (9) and is connected with a limit nut (11) in a screwing way, a plurality of first broken edges (7) are integrally formed on the periphery of the outer wall of the upper end of the drill bit (6), the periphery of the outer wall of the bottom end of the drill bit (6) is integrally formed with a plurality of second broken edges (8).

2. The hydraulic reverse circulation up-drilling construction double-wall drilling tool as claimed in claim 1, wherein: the drill seat (5) and the drill bit (6) are metal components, the drill seat (5) and the drill bit (6) are both of a hollow structure and are communicated with each other, the bottom end of the inner drill rod (3) and the upper end of the drill bit (6) are both of a conical structure, and the upper end face of the drill seat (5) is tightly attached to the bottom end face of the drill bit (6).

3. The hydraulic reverse circulation up-drilling construction double-wall drilling tool as claimed in claim 1, wherein: the positioning insertion hole (9) and the positioning insertion shaft (10) are perpendicular to the drill base (5) and the drill bit (6) respectively.

4. The hydraulic reverse circulation up-drilling construction double-wall drilling tool as claimed in claim 1, wherein: the limiting nut (11) is a metal component, and the upper end face of the limiting nut is tightly attached to the bottom end face of the drill base (5).

5. The hydraulic reverse circulation up-drilling construction double-wall drilling tool as claimed in claim 1, wherein: the first breaking edge (7) and the second breaking edge (8) are both arc-shaped structures and are obliquely arranged.

6. The hydraulic reverse circulation up-drilling construction double-wall drilling tool as claimed in claim 1, wherein: the drill seat (5) and the drill bit (6) are perpendicular to the outer drill rod (2).