CN210714468U

CN210714468U - Large drilling tool system with variable diameter

Info

Publication number: CN210714468U
Application number: CN201921282193.9U
Authority: CN
Inventors: 丁志宏; 钱骏
Original assignee: Hengtong Ocean Engineering Co Ltd
Current assignee: Hengtong Ocean Engineering Co Ltd
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2020-06-09
Anticipated expiration: 2029-08-08

Abstract

The utility model discloses a large-scale drilling tool system of variable footpath, including drilling rod and connecting cylinder, the bottom of drilling rod is provided with the crossover sub, and the internally mounted of crossover sub has the ware that converges, the lower extreme of the ware that converges is provided with the reducing director, and installs director piston shoes around the reducing director is outside, the connecting cylinder is located the outside one end in reducing director bottom, the connecting cylinder bottom is provided with the reducing drill bit device. Compared with the prior art, the large drilling tool system with variable diameter comprises: the movable drill bit is of a rectangular structure, the matching part of the movable drill bit and the drill bit matrix is of a sliding structure, the abnormal stress of a pin shaft is reduced in the drilling process, the pin shaft is protected, the service life is prolonged, the diameter-variable drill bit device and the diameter-variable guider are provided with the positioning stop blocks, drilling can be continued when adverse accidents such as oil pipe burst occur, the drilling is not affected, when the movable drill bit and the guider sliding shoes retract, the dead weight can be utilized, the retraction purpose is achieved, and the reliability is high.

Description

Large drilling tool system with variable diameter

Technical Field

The utility model relates to a drilling tool technical field specifically is a large-scale drilling tool system of reducing.

Background

The drilling tool is a tool used in connection with drilling holes, drilling holes and the like, mainly comprises wind power rock-socketed drilling holes, drilling (well drilling) tools, metallurgical furnace drilling tools and the like, and along with the requirements of construction environments, the functions of the drilling tool are better improved, the working efficiency of the drilling tool is improved, but the defects still exist.

When a large drilling tool in the market is used, the effective hole forming depth is deep, the construction work amount is large, time and labor are wasted, and the construction period is long; after the hole is formed, the concrete pouring amount is large, the construction consumable is aggravated, and the economical efficiency is poor; the diameter-variable guide adopts a roller structure, so that the stability of the hole wall is damaged, hole collapse is easy to cause, and the safety is low; by adopting a swing type diameter changing mode, the cutting surface of the cutter cannot be ensured to be at the most favorable position, the rock breaking effect is deteriorated, and the cutter abrasion is intensified, so that improvement and innovation are performed on the basis of the existing large drilling tool system with the diameter changeable function.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a large drilling tool system with variable diameter, which aims to solve the problems of the prior art that the effective drilling depth is deep, the construction work amount is large, the time and the labor are wasted, and the construction period is long; after the hole is formed, the concrete pouring amount is large, the construction consumable is aggravated, and the economical efficiency is poor; the diameter-variable guide adopts a roller structure, so that the stability of the hole wall is damaged, hole collapse is easy to cause, and the safety is low; the oscillation amplitude type diameter changing mode is adopted, the cutting surface of the cutter cannot be ensured to be at the most favorable position, the rock breaking effect is poor, and the cutter abrasion is aggravated.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a large-scale drilling tool system that can reducing, includes drilling rod and connecting cylinder, the bottom of drilling rod is provided with transition joint, and transition joint's internally mounted has the ware that converges, the lower extreme of the ware that converges is provided with the reducing director, and installs director piston shoe around the reducing director is outside, the connecting cylinder is located the outside one end in reducing director bottom, the connecting cylinder bottom is provided with the reducing bit device, and the bottom of reducing bit device installs the ball tooth gyro wheel.

Preferably, the reducing drill bit device comprises a mixer, a drill bit matrix and a movable drill bit, the mixer is arranged at the upper end of the interior of the reducing drill bit device, the drill bit matrix is installed at the lower end of the interior of the reducing drill bit device, and one end of the exterior of the drill bit matrix is connected with the movable drill bit.

Preferably, the number of the movable drill bits is four, and the movable drill bits are symmetrically distributed about the vertical center line of the drill rod.

Preferably, the variable diameter guide consists of six guide shoes.

Preferably, the movable drill bit is of a rectangular structure, and the movable drill bit and the drill bit matrix are matched with each other to form a sliding structure.

Preferably, the height of the drill bit matrix is greater than that of the movable drill bit, and four drill bit matrixes are arranged.

Preferably, the outer part of the connecting cylinder is fixedly connected with the drill rod, and the connecting cylinder is perpendicular to the ball tooth roller.

Preferably, the cross-sectional shape of the spherical teeth is a conical structure, and the corresponding groups of the spherical teeth are required to be arranged according to the diameter of the movable drill bit.

Compared with the prior art, the beneficial effects of the utility model are that:

1. compared with the prior art, the large drilling tool system with variable diameter comprises: the transition joint is provided with an upper flange connected with a drill rod, a lower flange connected with a reducing guider, the transition joint is internally provided with a junction station, three slag suction pipelines are combined into one pipeline to be discharged out of a pile hole, the reducing guider plays a role in stabilizing a drilling tool system and ensuring the verticality of the pile hole, the reducing guider consists of six guider sliding shoes, the guide sliding shoes are ensured to be always kept in a vertical state by adopting the parallelogram principle, and the connection cylinder is responsible for bearing the upward and downward actions because the guider sliding shoes have large areas and disperse the acting force on the hole wall and reduce hole wall collapse caused by overlarge local stress;

2. the variable-diameter drill bit device comprises a mixer, a drill bit matrix and a movable drill bit, wherein the mixer fuses compressed air and drill slag, the drill slag is taken out of the hole bottom by utilizing the principle of gas lift, the drill bit matrix is a flat-bottom drill bit, the four movable drill bits are uniformly distributed in a circumferential manner, the movable drill bit cutter is ensured to always keep the optimal rock breaking angle by adopting the principle of parallelogram, the height difference between the drill bit matrix and the movable drill bit is small, the effective hole forming depth is reduced, the work amount is not greatly increased, the construction period is short, the grouting amount in the hole at the later stage is reduced, the construction engineering cost is reduced, the economy is good, the movable drill bit is designed by combining the oil cylinder jacking and a four-connecting-rod structure, the cutter of the movable drill bit is always kept at a fixed angle;

3. meanwhile, the movable drill bit is of a rectangular structure, the matching part of the movable drill bit and the drill bit matrix is of a sliding structure, the abnormal stress of the pin shaft is reduced, the pin shaft is protected, the service life is prolonged, the diameter-variable drill bit device and the diameter-variable guider are provided with positioning stop blocks, drilling can be continued when adverse accidents such as oil pipe burst occur, the drilling is not affected, when the movable drill bit and the guider sliding shoes retract, the dead weight can be utilized, the retraction purpose is achieved, and the reliability is high.

Drawings

FIG. 1 is a schematic structural view of the reducing drill according to the present invention in an open state;

FIG. 2 is a schematic structural view of the reducing drill of the present invention in a closed state;

fig. 3 is an enlarged schematic view of a portion a in fig. 1 according to the present invention.

In the figure: 1. a drill stem; 2. a transition joint; 3. a junction station; 4. a variable diameter guide; 5. a guide shoe; 6. a coupling cylinder; 7. a variable diameter drill bit device; 701. a mixer; 702. a drill bit matrix; 703. a movable drill bit; 704. spherical teeth; 8. a ball gear roller.

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. 1-3, the present invention provides a technical solution: a large-scale drilling tool system with variable diameter comprises a drill rod 1, a transition joint 2, a junction cylinder 3, a variable diameter guider 4, guider sliding shoes 5, a connecting cylinder 6, a variable diameter drill bit device 7, a mixer 701, a drill bit matrix 702, a movable drill bit 703, spherical teeth 704 and spherical tooth rollers 8, wherein the bottom of the drill rod 1 is provided with the transition joint 2, the junction cylinder 3 is arranged inside the transition joint 2, the lower end of the junction cylinder 3 is provided with the variable diameter guider 4, the guider sliding shoes 5 are arranged around the outer part of the variable diameter guider 4, the variable diameter guider 4 consists of six guider sliding shoes 5, an upper flange of the transition joint 2 is connected with the drill rod 1, a lower flange is connected with the variable diameter guider 4, the junction cylinder 3 is arranged in the transition joint 2, one pipeline of three slag suction pipelines is discharged out of a pile hole, the variable diameter guider 4 plays a role in stabilizing the drilling tool system, the pile hole is ensured, and the variable diameter guider 4 consists of six guider sliding shoes 5, the guide device adopts the parallelogram principle to ensure that a guide slipper 5 is always kept in a vertical state, and because the guide slipper 5 has large area and has dispersed acting force on the hole wall, the hole wall collapse caused by overlarge local stress is reduced, a connecting cylinder 6 is responsible for the action of opening and closing up, the connecting cylinder 6 is positioned at one end of the outer part of the bottom of a variable diameter guide device 4, the outer part of the connecting cylinder 6 is fixedly connected with a drill rod 1, the connecting cylinder 6 is vertical to a spherical tooth roller 8, a variable diameter drill bit device 7 is arranged at the bottom of the connecting cylinder 6, the spherical tooth roller 8 is arranged at the bottom of the variable diameter drill bit device 7, the variable diameter drill bit device 7 comprises a mixer 701, a drill bit matrix 702, a movable drill bit 703 and a spherical tooth 704, the mixer 701 is arranged at the upper end of the inner part of the variable diameter drill bit device 7, the drill bit matrix 702 is arranged at the lower end of the, the bottom inside the reducing drill bit device 7 is provided with spherical teeth 704;

the height difference between the bit parent body 702 and the movable bit 703 is small, four bit parent bodies 702 are arranged, the reducing bit device 7 comprises three parts of a mixer 701, the bit parent bodies 702 and the movable bits 703, after the mixer 701 fuses compressed air and drilling slag, the drilling slag is taken out of the hole bottom by utilizing the principle of gas lift, the bit parent bodies 702 are flat-bottomed bits, the movable bits 703 are totally four blocks which are circumferentially and uniformly distributed, the parallelogram principle is adopted to ensure that the cutters of the movable bits 703 always keep the optimal rock breaking angle, the bit parent bodies 702 are higher than the movable bits 703, the effective hole forming depth is reduced, the engineering quantity is not greatly increased, the construction period is short, the later grouting quantity in holes is reduced, the construction engineering cost is reduced, the economy is good, the movable bits are designed by combining the jacking of oil cylinders and the four-bar structure, the cutters of the movable bits 703 are always kept at a fixed angle, the rock breaking capacity of the cutters is ensured, the movable drill bit 703 is rectangular, the movable drill bit 703 and the drill bit matrix 702 are mutually matched to form a sliding structure, and the movable drill bit 703 adopts a rectangular structure, the matching part of the reducing drill bit device and the drill bit matrix 702 adopts a sliding structure, the abnormal stress of the pin shaft is reduced, the pin shaft is protected, the service life is prolonged, the reducing drill bit device 7 and the reducing guider 4 are provided with positioning stop blocks, when adverse accidents such as oil pipe burst occur, drilling can be continued without being affected, when the movable drill bit 703 and the guider sliding shoe 5 are retracted, the purpose of retraction can be achieved by utilizing the dead weight, the reliability is high, four movable drill bits 703 are arranged, the movable drill bits 703 are symmetrically distributed about the vertical center line of the drill rod 1, the spherical teeth 704 are arranged inside the spherical tooth roller 8, the cross-sectional shapes of the spherical teeth 704 are conical structures, and the spherical teeth 704 are required to be arranged in corresponding groups according to the diameter of the movable drill bits 703.

The working principle is as follows: when the variable-diameter large drilling tool system is used, after the drilling diameter is determined, a stop block is arranged for each variable-diameter department to ensure that the drilling diameter meets the design requirement, the four-connecting-rod variable-diameter drilling tool system is assembled according to the design requirement and is successfully debugged, the whole drilling tool system is hung into a pile hole, then the drilling rods 1 are continuously installed and connected with oil pipes of the drilling tool system until the variable-diameter drilling tool system passes through a steel pile variable-diameter section, a hydraulic system of the drilling tool system is connected with the oil pipes, a variable-diameter guider 4 is connected with a hydraulic pipeline of a variable-diameter drill bit device 7 in parallel, the two systems are provided with energy accumulators to continuously supplement pressure to oil cylinders to ensure the opening degree of the oil cylinders, the hydraulic system is started, a guider sliding shoe 5 and a movable drill bit 703 are opened to the design position, a valve is arranged at the end of the hydraulic oil pipe, the oil pipes of, the reducing drilling tool is provided until the reducing drilling tool is lifted to the steel pile reducing section, at the moment, a drilling tool system pipeline is arranged on the platform, at the moment, the oil pipe is connected, the guider sliding shoe 5 and the movable drill bit 703 retract, so that the guider sliding shoe and the movable drill bit smoothly penetrate through the steel pile reducing section, and the using process of the whole reducing large drilling tool system is completed.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A large-scale drilling tool system that can reduce, includes drilling rod (1) and coupling sleeve (6), its characterized in that: the bottom of drilling rod (1) is provided with transition joint (2), and the internally mounted of transition joint (2) has ware (3) of converging, the lower extreme of ware (3) of converging is provided with reducing director (4), and installs director piston shoes (5) around reducing director (4) outside, connecting cylinder (6) are located the outside one end in reducing director (4) bottom, connecting cylinder (6) bottom is provided with reducing bit device (7), and spherical tooth gyro wheel (8) are installed to the bottom of reducing bit device (7).

2. The variable-diameter large drilling system according to claim 1, wherein: the reducing drill bit device (7) comprises a mixer (701), a drill bit parent body (702), a movable drill bit (703) and spherical teeth (704), the mixer (701) is arranged at the upper end inside the reducing drill bit device (7), the drill bit parent body (702) is installed at the lower end inside the reducing drill bit device (7), the movable drill bit (703) is connected to one end outside the drill bit parent body (702), and the spherical teeth (704) are arranged at the bottom inside the reducing drill bit device (7).

3. A large scale variable diameter drilling system according to claim 2, wherein: the number of the movable drill bits (703) is four, and the movable drill bits (703) are symmetrically distributed around the vertical center line of the drill rod (1).

4. The variable-diameter large drilling system according to claim 1, wherein: the diameter-variable guider (4) consists of six guider sliding shoes (5).

5. A large scale variable diameter drilling system according to claim 2, wherein: the movable drill bit (703) is of a rectangular structure, and the movable drill bit (703) and the drill bit parent body (702) are matched with each other to form a sliding structure.

6. A large scale variable diameter drilling system according to claim 2, wherein: the height of the drill bit parent body (702) is greater than that of the movable drill bit (703), and the number of the drill bit parent bodies (702) is four.

7. The variable-diameter large drilling system according to claim 1, wherein: the outer part of the connecting cylinder (6) is fixedly connected with the drill rod (1), and the connecting cylinder (6) is vertical to the ball tooth roller (8).

8. A large scale variable diameter drilling system according to claim 2, wherein: the section of the spherical teeth (704) is in a conical structure, and the corresponding groups of the spherical teeth (704) are required to be arranged according to the diameter of the movable drill bit (703).