CN211573391U

CN211573391U - Pneumatic rotary steering drilling tool

Info

Publication number: CN211573391U
Application number: CN202020114744.7U
Authority: CN
Inventors: 曹良
Original assignee: Suzhou Keyi Oil Gas Engineering Equipment Service Co ltd
Current assignee: Zhejiang Xinrui Jingke Power Technology Co ltd
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2020-09-25
Anticipated expiration: 2030-01-16

Abstract

The utility model discloses a pneumatic rotatory steering drilling tool belongs to horizontal directional drilling machine rock pipe engineering construction field, and its technical scheme main points are including the shell, install transmission structure and by transmission structure driven chisel hole structure in the shell, the chisel hole structure includes drilling rod and impacter, the one end of drilling rod is inserted in the shell to both rotate the connection, the impacter is installed to the one end that the shell was kept away from to the drilling rod, transmission structure is including installing the inside spring of shell and setting up the internal helical spline on the drilling rod surface, the one end of spring offsets with the tip that the drilling rod is located the shell, be provided with the external helical spline with the internal helical spline meshing on the inner wall of shell, the advantage of this kind of pneumatic rotatory steering drilling tool lies in the function that realizes the rotation direction.

Description

Pneumatic rotary steering drilling tool

Technical Field

The utility model relates to a horizontal directional drilling machine rock pipeline engineering construction field, in particular to pneumatic rotatory direction drilling tool.

Background

China has extensive and abundant natural resources, which means that the resources of China are abundant, so the mining industry is one of the pillar industries of China. With the development of economy and society in China, the mining industry is greatly developed, and further, the matched equipment industry related to the mining industry is also greatly developed. A drilling tool is a tool commonly used in the mining industry, and is generally used for performing drilling and boring work.

The pneumatic hammer for the rock pneumatic guide drilling tool of the conventional trenchless horizontal directional drilling machine is connected with a shell through a hammer head with a common spline shaft, and the expansion of a hammer body, the vibration of the hammer head and the rock crushing are realized under the action of compressed air, so that the feeding and pore forming of the drilling tool are realized. However, under the condition of feeding, the common air hammer can not realize direction conversion, namely, the common air hammer can not realize a rotation guide function, so that the rock crushing efficiency is reduced, the construction period of rock engineering is long, the consumption of a drilling tool is large, the cost is high, and the normal operation of the rock pipeline engineering construction engineering is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a pneumatic rotatory direction drilling tool, its advantage is in the function that realizes the rotation direction to the not enough of prior art.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a pneumatic rotatory steering drilling tool, includes the shell, install transmission structure and by transmission structure driven chisel hole structure in the shell, the chisel hole structure includes drilling rod and impacter, the one end of drilling rod is inserted in the shell to both rotate the connection, the drilling rod is kept away from the one end of shell and is installed the impacter, transmission structure is including installing the inside spring of shell and setting up the internal helical spline on the drilling rod surface, the one end of spring offsets with the tip that the drilling rod is located the shell, be provided with the external helical spline with internal helical spline meshing on the inner wall of shell.

Furthermore, the tooth strengthening of the external helical spline is provided with a corner of 0.1-3 degrees, and the tooth strengthening of the internal helical spline is provided with a corner the same as the tooth strengthening of the external helical spline.

Furthermore, the interior spiral spline is equipped with the lip sealing ring in a sleeved manner, the lip sealing ring is located between the drill point and the shell, and the lip sealing ring offsets against the inner wall of the shell.

Furthermore, a piston block is connected in the shell in a sliding mode, one end of the spring abuts against the piston block, and the other end of the spring abuts against the end portion of the drill rod.

Furthermore, a blocking piece is sleeved at the end of the drill rod, and the drill rod is abutted to the spring through the blocking piece.

Further, the end part of the drill rod is in threaded connection with a locking nut, and the locking nut is located at the blocking piece.

Furthermore, a circular hole for air circulation is formed in the piston block.

Further, the impactor is internally provided with a first air passage arranged along the central axis of the impactor.

Furthermore, a second air channel is arranged in the drill rod along the axial direction of the drill rod, and the second air channel is communicated with the first air channel.

To sum up, the utility model discloses following beneficial effect has:

1. under the action of compressed air, the spring extrudes the drill rod back, and the drill rod and the impactor are driven to rotate due to the meshed relation of the internal spiral spline and the external spiral spline;

2. because the internal helical spline is provided with a 0.1-3 degree corner, when the drill rod rotates to a certain position, the drill rod continues to be pushed, the impactor changes the reverse direction, and the guiding function is realized.

Drawings

FIG. 1 is a schematic view of a pneumatic rotary steerable drill;

FIG. 2 is a schematic cross-sectional view of a pneumatic rotary steerable drilling tool.

In the figure, 1, an impactor; 11. a first air passage; 2. a drill stem; 21. a second air passage; 22. A lip-shaped sealing ring; 23. an internal helical spline; 24. locking the nut; 25. a baffle plate; 3. a housing; 31. a piston block; 32. a spring; 33. an external helical spline.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Example (b): a pneumatic rotary steering drilling tool is shown in figure 1 and comprises a shell 3, wherein a transmission structure and a hole drilling structure are installed in the shell 3, and the transmission structure is mainly used for transmitting power to the hole drilling structure to drive the hole drilling structure to complete hole drilling.

Referring to fig. 1 and 2, the drilling structure includes a drill rod 2 and an impactor 1, one end of the drill rod 2 is inserted into a housing 3 and is rotatably connected with the housing, and the other end of the drill rod 2 is fixedly connected with the impactor 1. The impactor 1 is internally provided with a first air passage 11 arranged along the central axis thereof, and the drill rod 2 is internally provided with a second air passage 21 arranged along the axial direction thereof, wherein the second air passage 21 is communicated with the first air passage 11. In operation, compressed air may flow from the first air passage 11 to the second air passage 21.

Referring to fig. 1 and 2, the transmission structure includes female helical splines 23 provided on the outer surface of the drill rod 2, male helical splines 33 provided on the inner wall of the housing 3, and the male helical splines 33 engaged with the female helical splines 23. The tooth strengthening of the external helical spline 33 has a rotation angle of 0.1-3 degrees, and the tooth strengthening of the internal helical spline 23 has a rotation angle the same as the tooth strengthening of the external helical spline 33, so when the drill rod 2 rotates, when the drill rod 2 rotates to a certain position, the drill rod continues to be pushed forward, and the impactor 1 can change the reverse direction to realize the guiding function.

Referring to fig. 1 and 2, the internal helical spline 23 of the drill rod 2 is further sleeved with a lip-shaped sealing ring 22, the lip-shaped sealing ring 22 is located between the drill point and the housing 3, the lip-shaped sealing ring 22 abuts against the inner wall of the housing 3, and the lip-shaped sealing ring 22 is mainly used for filling a gap between the drill point and the housing 3, so that the sealing performance between the drill point and the housing 3 is further improved.

Referring to fig. 1 and 2, a stop piece 25 is sleeved on the end of the drill rod 2, the end of the drill rod 2 is in threaded connection with a lock nut 24, the lock nut 24 is located at the stop piece 25, and the stop piece 25 is further fixed by the lock nut 24.

As shown in connection with fig. 1 and 2, the transmission structure comprises a spring 32 mounted in the housing 3. The housing 3 is slidably connected to the piston block 31, and the piston block 31 is provided with a circular hole, so that during operation, compressed air can enter the housing 3 through the circular hole, and then the compressed air can enter the second air passage 21. One end of the spring 32 abuts against the piston block 31, the other end of the spring 32 abuts against the baffle 25 of the drill rod 2, and when the machine is in operation, compressed air acts on the piston block 31 to drive the piston block 31 to move, so that the spring 32 is extruded by the piston block 31.

The specific implementation process comprises the following steps: in the state where there is no compressed air, the spring 32 in the housing 3 is in the longest state; when the pressure of the compressed air has reached a certain parameter, the impactor 1 vibrates and at the same time starts to cut the rock. The external force of cutting the rock is rotatory through impacter 1 area internal helical spline 23, and spring 32 compresses, and the rotatory in-process of internal helical spline 23 drives impacter 1 and rotates, and when spring 32 after the compression reeps, internal helical spline 23 counter rotation drives impacter 1 counter rotation simultaneously and accomplishes a reciprocating motion, makes impacter 1 can rotate 360 degrees from 0 degrees, and such working process has just realized impacter 1 and has carried out the rock drilling with the form of face. The internal helical spline 23 is provided with a 0.1-3 degree corner in a short circuit mode, the drill rod 2 rotates to a certain angle position, and when the drill rod 2 is pushed, the drill rod 2 can change the direction as required, and the guiding function is achieved.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. A pneumatic rotary steering drilling tool is characterized in that: including shell (3), install transmission structure and by transmission structure driven chisel hole structure in shell (3), chisel hole structure includes drilling rod (2) and impacter (1), the one end of drilling rod (2) is inserted in shell (3) to both rotate and connect, impacter (1) is installed to the one end that shell (3) were kept away from in drilling rod (2), transmission structure is including installing spring (32) inside shell (3) and setting up interior helical spline (23) on drilling rod (2) surface, the tip that the one end and drilling rod (2) of spring (32) are located in shell (3) offsets, be provided with outer helical spline (33) with interior helical spline (23) meshing on the inner wall of shell (3).

2. The pneumatic rotary steerable drill according to claim 1, wherein: the tooth strengthening of the external helical spline (33) is provided with a rotation angle of 0.1-3 degrees, and the tooth strengthening of the internal helical spline (23) is provided with a rotation angle the same as the tooth strengthening of the external helical spline (33).

3. A pneumatic rotary steerable drill according to claim 2, wherein: the novel drill bit is characterized in that a lip-shaped sealing ring (22) is sleeved on the inner spiral spline (23), the lip-shaped sealing ring (22) is located between the drill bit and the shell (3), and the lip-shaped sealing ring (22) is abutted to the inner wall of the shell (3).

4. The pneumatic rotary steerable drill according to claim 1, wherein: the piston block (31) is connected in the shell (3) in a sliding mode, one end of the spring (32) abuts against the piston block (31), and the other end of the spring (32) abuts against the end portion of the drill rod (2).

5. An air-actuated rotary steerable drilling tool according to claim 4, wherein: the end part of the drill rod (2) is sleeved with a baffle (25), and the drill rod (2) is propped against the spring (32) through the baffle (25).

6. An air-actuated rotary steerable drilling tool according to claim 5, wherein: the end part of the drill rod (2) is in threaded connection with a locking nut (24), and the locking nut (24) is located on a baffle plate (25).

7. An air-actuated rotary steerable drilling tool according to claim 4, wherein: the piston block (31) is provided with a round hole for air circulation.

8. The pneumatic rotary steerable drill according to claim 1, wherein: the impactor (1) is internally provided with a first air channel (11) arranged along the central axis thereof.

9. An air-actuated rotary steerable drilling tool according to claim 8, wherein: and a second air channel (21) arranged along the axial direction of the drill rod (2) is arranged in the drill rod, and the second air channel (21) is communicated with the first air channel (11).