CN215761509U

CN215761509U - Rotary drilling tool

Info

Publication number: CN215761509U
Application number: CN202122106161.7U
Authority: CN
Inventors: 温国强; 李轶; 胡志启
Original assignee: Qianlima Construction Machinery Remanufacturing Group Co ltd
Current assignee: Qianlima Construction Machinery Remanufacturing Group Co ltd
Priority date: 2021-09-02
Filing date: 2021-09-02
Publication date: 2022-02-08
Anticipated expiration: 2031-09-02

Abstract

The utility model relates to the technical field of drilling and discloses a rotary drilling tool. The drill bit guide device comprises a barrel, wherein a top plate is fixedly installed at one end of the barrel, a barrel door is arranged at one end, far away from the top plate, of the barrel, the barrel door comprises a guide barrel, a guide head, a drill bit fixing plate, a drill bit, a bottom plate and a rotating plate, one end of the guide barrel is fixedly installed at the bottom of the rotating plate, and the top of the guide head is fixedly connected with one end, far away from the rotating plate, of the guide barrel; in the construction process, in order to realize the drilling operation of the large-diameter hole by using the light-weight small-specification power head, a method of annular drilling for multiple times is adopted to realize the drilling operation gradually, so that the drilling operation of each hole diameter only needs to overcome the resistance moment of an annular section, and thus, the resistance moment of single drilling is greatly reduced. And when annular drilling operation, the hole receives the extrusion and collapses easily, and the drill bit lower extreme sets up the guide cylinder, can effectively prevent the hole collapse.

Description

Rotary drilling tool

Technical Field

The utility model relates to the technical field of drilling, in particular to a rotary drilling tool.

Background

At present, a building is a main place where activities such as daily production, life, learning and the like of people cannot leave, and is also an important place, the quality and safety of the building quality directly influence the life quality of people, bridge construction is an important component of highway construction, a high-quality bridge can enable people to go out more safely, at present, before a building and a bridge are built, a pile foundation needs to be built, when a drilling tool is used for drilling the pile foundation, a drill bit of a traditional rotary drilling tool can receive resistance from different directions through different geological layers in the construction process, when the resistance is uneven, the direction of a drilling hole can be deviated, the hole wall area just drilled behind the drill bit can also be reduced in diameter and expanded in diameter, and hole collapse can be caused seriously. If the problems are not solved, the deviation between the actual aperture and the designed aperture and the deviation between the actual aperture and the designed aperture can be caused, the stress of the pile foundation of a light person can not meet the design requirement, and the phenomena of hole collapse, pile breakage and the like can occur when a heavy person pours concrete. Therefore, modular assembly work machine equipment needs to be developed to accomplish this task. Each module of the modularized engineering machinery has the characteristics of small volume and light weight, the torque of the rotary drilling power head meeting the requirement is too small, large-aperture drilling operation cannot be realized, the aperture of the existing rotary drilling tool capable of drilling is very small, the efficiency is not high, the requirement of large-scale construction engineering cannot be met, and in addition, the existing rotary drilling tool is complex in structure, high in cost and inconvenient to popularize.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a rotary drilling tool to solve the problems in the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a dig drilling tool soon, includes the barrel, the one end fixed mounting of barrel has the roof, the one end that the roof was kept away from to the barrel is provided with the barrel door, the barrel door is including guide cylinder, direction head, drill bit fixed plate, drill bit, bottom plate, rotor plate, the middle part of rotor plate is articulated with the middle part of bottom plate, the one end fixed mounting of guide cylinder is in the bottom of rotor plate, the one end fixed connection of rotor plate is kept away from with the guide cylinder to the top of direction head, one side fixed connection of outside and guide cylinder is run through at the middle part of rotor plate and is extended to the one end of drill bit fixed plate, the drill bit inlays on the drill bit fixed plate.

Preferably, the guide head extends towards the opposite direction of the guide cylinder, and the outer diameter of the guide head is gradually reduced.

Preferably, the top of the top plate is fixedly provided with a connecting square, and the top of the connecting square is provided with a drill rod mounting hole.

Preferably, the guide cylinder is wound with a spiral blade on the outer circumference.

Preferably, the helical blade starts from the junction of the guide cylinder and the bottom plate, and the outer diameter of the helical blade is gradually reduced as the helical blade extends in the direction of the guide cylinder.

Preferably, the outer diameter of the guide cylinder is larger than or equal to the diameter of a bottom hole of the finished pile foundation drilling hole.

The utility model provides a rotary drilling tool. The method has the following beneficial effects: in the construction process, in order to realize the drilling operation of the large-diameter hole by using the light-weight small-specification power head, a method of annular drilling for multiple times is adopted to realize the drilling operation gradually, so that the drilling operation of each hole diameter only needs to overcome the resistance moment of an annular section, and thus, the resistance moment of single drilling is greatly reduced. And when annular drilling operation, the hole receives the extrusion and collapses easily, and the drill bit lower extreme sets up the guide cylinder, can effectively prevent the hole collapse.

Drawings

FIG. 1 is a front view of the present invention;

fig. 2 is a bottom view of the present invention.

In the figure: the drilling machine comprises a barrel body 1, a top plate 2, a barrel body door 3, a guide barrel 4, a guide head 5, a drill bit fixing plate 6, a drill bit 7, a bottom plate 9, a rotating plate 10 and a connecting square 8.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-2, the present invention provides a technical solution: a rotary drilling tool comprises a barrel body 1, a top plate 2 is fixedly installed at one end of the barrel body 1, the barrel body 1 is a cylinder body, a connecting square 8 is fixedly installed at the top of the top plate 2, a drill rod installing opening is formed in the top of the connecting square 8, the connecting square 8 is fixedly installed at the top of the top plate 2 and is conveniently connected with a drill rod, the whole body is convenient to disassemble and replace, a barrel body door 3 is arranged at one end, away from the top plate 2, of the barrel body 1, the barrel body door 3 comprises a guide barrel 4 and a guide head 5, a drill bit fixing plate 6, a drill bit 7, a bottom plate 9 and a rotating plate 10, the middle of the rotating plate 10 is hinged to the middle of the bottom plate 9, the rotating plate 10 can rotate better, one end of the guide barrel 4 is fixedly installed at the bottom of the bottom plate 9 and is placed in direct contact with the ground, the outer diameter of the guide barrel 4 is larger than or equal to the diameter of a bottom hole of finished pile foundation drilling, the top of the guide head 5 is fixedly connected with one end, away from the rotating plate 10, of the guide barrel 4, the guide head 5 extends towards the opposite direction of the guide cylinder 4, the outer diameter of the guide head gradually decreases, one end of the drill bit fixing plate 6 penetrates through the middle of the rotating plate 10 and extends the outside to be fixedly connected with one side of the guide cylinder 4, the spiral blade is wound on the periphery of the guide cylinder 4 and starts from the joint of the guide cylinder 4 and the bottom plate 9, the outer diameter of the spiral blade gradually decreases along with the direction extension of the guide cylinder 4, and in the construction process, in order to realize the drilling operation of a large-diameter hole by using a light-weight small-specification power head, a method of multiple annular drilling is adopted and is gradually realized, so that the drilling operation of each hole diameter only needs to overcome the resistance moment of an annular section, and therefore, the resistance moment of single drilling is greatly reduced. And when the annular drilling operation, the hole receives the extrusion and collapses easily, and the guide cylinder 4 is set up to 7 lower extremes of drill bit, can effectively prevent the hole collapse, and drill bit 7 inlays on drill bit fixed plate 6.

The working principle is as follows: accomplish earlier stage soil property and detect, the pore-forming location, with barrel 1, roof 2, barrel door 3, guide cylinder 4, direction head 5, drill bit fixed plate 6, drill bit 7, bottom plate 9, rotor plate 10, the side of connection 8 mechanical assembly takes one's place, the bottom hole diameter of guide cylinder 4 external diameter more than or equal to drilling, carry out cyclic annular pore-forming operation, to guide cylinder 4 arrival hole bottom, adopt the minor diameter drill bucket 7 that satisfies the moment of torsion requirement, drill on the position of location, repeated operation is to the pore-forming degree of depth and is satisfied the requirement.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a dig drilling tool soon, includes barrel (1), its characterized in that: the drill bit is characterized in that a top plate (2) is fixedly mounted at one end of the barrel body (1), a barrel body door (3) is arranged at one end, far away from the top plate (2), of the barrel body (1), the barrel body door (3) comprises a guide cylinder (4), a guide head (5), a drill bit fixing plate (6), a drill bit (7), a bottom plate (9) and a rotating plate (10), the middle of the rotating plate (10) is hinged to the middle of the bottom plate (9), one end of the guide cylinder (4) is fixedly mounted at the bottom of the rotating plate (10), the top of the guide head (5) is fixedly connected with one end, far away from the rotating plate (10), of the guide cylinder (4), one end of the drill bit fixing plate (6) penetrates through the middle of the rotating plate (10) and extends to be fixedly connected with one side of the guide cylinder (4), and the drill bit (7) is embedded on the drill bit fixing plate (6).

2. The rotary drilling rig according to claim 1, wherein: the guide head (5) extends towards the opposite direction of the guide cylinder (4), and the outer diameter of the guide head is gradually reduced.

3. The rotary drilling rig according to claim 1, wherein: the top of the top plate (2) is fixedly provided with a connecting square (8), and the top of the connecting square (8) is provided with a drill rod mounting opening.

4. The rotary drilling rig according to claim 1, wherein: helical blades are wound on the periphery of the guide cylinder (4).

5. The rotary drilling rig according to claim 4, wherein: the spiral blade starts from the joint of the guide cylinder (4) and the bottom plate (9), and the outer diameter of the spiral blade is gradually reduced along with the extension of the guide cylinder (4).

6. The rotary drilling rig according to claim 1, wherein: and the outer diameter of the guide cylinder (4) is more than or equal to the diameter of the bottom hole of the finished pile foundation drilling hole.