Multi-screw gear combined type one-time hole-forming drilling tool for penetrating pipeline

Abstract

The utility model discloses a multi-screw gear combined type one-time hole-forming drilling tool for penetrating through a pipeline, and belongs to the technical field of pipeline engineering. Power of the screw assembly is converted into forward and reverse rotation rock breaking motion through a plurality of input shafts of the ordinary gear train, the reaction torque of a pipe column can be reduced or even eliminated, and pipeline crossing construction is facilitated. The utility model discloses compact structure is convenient for the construction of DN630 and below small caliber pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline engineering, in particular to the technical field of pipeline crossing construction, and specifically is a multi-screw gear combined type pipeline crossing and one-time hole forming drilling tool. Background Art

[0002] Trenchless pipeline crossing construction technology is essential for oil and gas pipelines crossing untappable areas such as the Yangtze River, the Yellow River, ponds, and roads. To improve construction efficiency and wellbore quality, domestic researchers have published two construction equipment, CN2024116615781 and CN2024116618807. These solutions incorporate a connecting rod mechanism that combines the power of multiple screw motors, adapting to the construction needs of large-diameter pipelines. However, due to size and space limitations, they are difficult to adapt to pipeline crossings of DN630 and below.

[0003] In summary, in order to address the difficulties in pipeline crossing construction of DN630 and below, a one-time hole-making tool is designed to solve the problem of drill string reverse torque, which can expand the scope of trenchless pipeline crossing construction. Summary of the Invention

[0004] In order to solve the above problems, the utility model provides a multi-screw gear combination type pipeline crossing one-time hole drilling tool. The fixed axis gear train converts the power of multiple screw motors into forward and reverse output, and drives the rock breaking unit to work, reducing the reverse torque of the pipe string.

[0005] In order to achieve the above purpose, the solution provided by the present invention is as follows:

[0006] A multi-screw gear combination type pipe-crossing one-time hole-forming drilling tool is characterized by comprising:

[0007] The main body is a cylindrical structure with the power part installed inside and the transmission part installed at the end;

[0008] The power part converts the power fluid energy into rotational output, including:

[0009] At least two drilling assemblies arranged parallel to the main body and working in parallel;

[0010] The overall structure is disc-shaped, fixedly connected to the main body, and is installed at both ends of the drilling tool assembly and the left and right support plates are fixedly connected circumferentially;

[0011] The transmission part is installed at one end of the main body, and converts the rotation output by the power part into two coaxial outputs of forward and reverse rotation with the help of the planetary gear train. The transmission part includes:

[0012] The overall structure is disc-shaped and fixedly connected to the left base at the end of the main body;

[0013] The overall structure is disc-shaped, and is installed on the right base at a side of the left base away from the main body and is fixedly connected to the left base;

[0014] The axis of the sun gear coincides with the axis of the left base and is installed in the middle of the left base and the right base;

[0015] an edge wheel disposed outside the sun wheel;

[0016] an intermediate gear mounted between the sun gear and the edge gear and meshing with the sun gear and the edge gear;

[0017] A rotating shaft is disposed in the intermediate wheel and is fixedly connected to the intermediate wheel in the circumferential direction; the rotating shaft is disposed between the left base and the right base, and passes through the left base and is installed with a connecting portion to transmit torque and rotation;

[0018] Hollow structure, with a flow tube passing through the left and right bases; the flow tube passes through the sun gear, and the two are circumferentially fixed to transmit rotation and torque;

[0019] The overall structure is cylindrical, and the transmission sleeve is installed on the outside of the edge wheel and is fixedly connected circumferentially;

[0020] The connecting part is a universal coupling, which connects the input shaft of the transmission part and the output shaft of the power part;

[0021] The cutting part uses the two coaxial rotations of the transmission part, forward and reverse, to perform cutting and crushing, including:

[0022] The overall structure is annular, connected to the transmission sleeve and with the edge cutting part of the rock breaking unit installed on the outside;

[0023] The overall structure is disc-shaped, connected to the flow tube and with the central cutting part of the rock breaking unit installed on the outside; the central cutting part includes an axial through hole connected to the inner space of the flow tube;

[0024] The power part comprises: a middle support plate which has a disc-shaped overall structure and is installed in the middle area of ​​the drilling tool assembly housing and is passed through by the drilling tool assembly.

[0025] The transmission sleeve and the left base are axially fixed by adopting step surface matching.

[0026] The transmission part includes: a barrier cylinder with an overall cylindrical structure and installed between the right base and the left base.

[0027] The transmission part includes: a connecting bolt that passes through the left base and the right base and fixes the two.

[0028] The connecting bolt passes through the barrier cylinder.

[0029] It also includes: a drag ring arranged at the front end of the cutting part and connected with the drag tube.

[0030] The advantages of this utility model are as follows:

[0031] (1) The utility model converts the power of multiple drilling tool assemblies into forward and reverse motion through a fixed-axis gear train system, and the torque synthesis satisfies the drilling requirements in one go;

[0032] (2) The rock-breaking torque of the edge cutting part and the center cutting part of the cutting part offsets each other, reducing or even eliminating the torque at the rear end of the drill string, making construction easier;

[0033] (3) The structure is compact, which is convenient for the construction of small-diameter pipelines of DN630 and below. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is an assembly principle diagram of embodiment 1 of the present utility model;

[0035] Figure 2 This is a cross-sectional view of embodiment 1 of the present invention;

[0036] Figure 3 This is a cross-sectional view of embodiment 1 of the present invention;

[0037] In the picture:

[0038] Left support plate 1, drilling tool assembly 2, middle support plate 3, right support plate 4;

[0039] Flow cylinder 5, left base 6, barrier cylinder 7, rotating shaft 8, intermediate wheel 9, edge wheel 10, sun gear 11; transmission sleeve 12, right base 13;

[0040] Edge cutting part 14 , rock breaking unit 15 , center cutting part 16 , connecting bolt 17 , main body 18 , connecting part 19 , dragging ring 20 , and dragging tube 21 . DETAILED DESCRIPTION

[0041] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings, but the implementation of the present invention is not limited thereto.

[0042] As shown in the accompanying drawings, the multi-screw gear combination type pipeline crossing and one-time hole forming drilling tool includes a power part, a transmission part, a cutting part, a connecting part 19 and a main body 18.

[0043] The power section, housed within the main body 18, includes three drill assemblies 2 arranged parallel to the main body 18. The drill assemblies 2 operate in parallel, converting the power fluid's energy into rotational output. The power section comprises a left support plate 1, drill assemblies 2, a middle support plate 3, and a right support plate 4.

[0044] The main body 18 is a cylindrical structure as a whole. The power part is installed in the main body 18. The axes of the three drilling tool assemblies 2 are parallel to the axis of the main body 18 so that both ends are connected and fixed in the main body.

[0045] The left support plate 1, the middle support plate 3 and the right support plate 4 are all disc-shaped. One end of the housing of the drill assembly 2 is connected to the left support plate 1 and the other end is connected to the right support plate 4. The housing of the drill assembly 2 is fixed circumferentially to transmit torque.

[0046] The middle support plate 3 is installed in the middle area of ​​the housing of the drilling tool assembly 2 , and the drilling tool assembly 2 passes through the middle support plate 3 .

[0047] The left support plate 1 and the right support plate 4 are fixedly connected to the main body 18 .

[0048] The connecting part 19 connects the input shaft of the transmission part and the output shaft of the power part; the connecting part 19 is a universal joint, mainly because there is an axis offset between the input shaft of the transmission part and the output shaft of the power part, and the two axes are parallel, and the universal joint is used to compensate for the axis offset.

[0049] The transmission part is installed on one end of the main body 18, and converts the rotation output by the power part into two coaxial outputs of forward and reverse rotation with the help of the planetary gear system. The transmission part includes: a flow cylinder 5, a left base 6, a barrier cylinder 7, a rotating shaft 8, an intermediate wheel 9, an edge wheel 10, and a sun gear 11; a transmission sleeve 12, a right base 13, a connecting bolt 17, and a pin 20.

[0050] The left base 6 has a disk-shaped overall structure and is fixedly connected to the end of the main body 18 , wherein the connection includes axial fixation and circumferential fixation.

[0051] The overall structure of the right base 13 is disc-shaped. The right base 13 is installed on a side of the left base 6 away from the main body 18 , and the right base 13 is fixedly connected to the left base 6 .

[0052] The barrier cylinder 7 is cylindrical in shape and is mounted between the right base 13 and the left base 6. The connecting bolts 17 pass through the left base 6 and the right base 13 to secure the left base 6 and the right base 13. For ease of arrangement, the connecting bolts 17 also pass through the barrier cylinder 7.

[0053] The axis of the sun gear 11 coincides with the axis of the left base 6. The sun gear 11 is installed in the middle position between the left base 6 and the right base 13. The edge wheel 10 is set on the outside of the sun gear 11. The intermediate wheel 9 is installed between the sun gear 11 and the edge wheel 10. The intermediate wheel 9 is engaged with the sun gear 11, and the intermediate wheel 9 is engaged with the edge wheel 10.

[0054] Rotating shaft 8 is positioned within intermediate wheel 9 and is circumferentially fixedly connected thereto, in this case using a keyway. Rotating shaft 8 and intermediate wheel 9 can also be formed as an integral structure. Rotating shaft 8 is positioned between left base 6 and right base 13, extending through left base 6. A connecting portion 19 is mounted on the extended end of rotating shaft 8 to transmit torque and rotation.

[0055] The flow tube 5 is a hollow structure that passes through the left base 6 and the right base 13. The flow tube 5 passes through the sun gear 11, and the two are circumferentially fixed to transmit rotation and torque. The flow tube 5 and the sun gear 11 can be made into an integrated structure.

[0056] The transmission sleeve 12 has an overall cylindrical structure and is mounted on the outside of the edge wheel 10 . The transmission sleeve 12 and the edge wheel 10 are circumferentially fixed to transmit rotation and torque.

[0057] The transmission sleeve 12 and the left base 6 are axially fixed by using step surface cooperation, and the transmission sleeve 12 is axially fixedly connected relative to the left base 6 .

[0058] The cutting part utilizes the forward and reverse coaxial rotations of the transmission part to cut and crush the rock, and includes an edge cutting part 14 and a center cutting part 16 .

[0059] The edge cutting part 14 is annular in shape and is connected to the rotation output at the edge of the transmission part 12 . The edge cutting part 14 is connected to the transmission sleeve 12 , and a rock breaking unit 15 is installed outside the edge cutting part 14 .

[0060] The central cutting section 16 is disc-shaped and connected to the central rotational output of the transmission unit. It is connected to the flow tube 5, with the rock breaking unit 15 mounted on its outer surface. The central cutting section 16 includes an axial through-hole that connects to the interior of the flow tube 5.

[0061] In addition, in order to facilitate the advancement of the trenchless pipe string, a drag ring 20 is provided at the front end of the cutting part, and the drag ring 20 is connected to the front end drag pipe 21. The drag pipe 21 pulls the pipe string forward, and the rear end is provided with a booster device to help the pipe string move forward.

[0062] The principle of this utility model is:

[0063] The power part is arranged in the main body 18 , and multiple drilling assemblies 2 work simultaneously and are driven by high-pressure mud, so that the drilling assemblies 2 generate output rotation.

[0064] One end of the connecting portion 19 is connected to the output shaft of the power portion, and the other end is connected to the input shaft (rotating shaft 8) of the transmission portion.

[0065] The transmission unit is located at one end of the main body 18. A gear system (fixed-axis gear train) converts the rotational output of the power unit into two coaxial outputs: forward and reverse rotation. These forward and reverse rotations drive the edge cutting portion 14 and the center cutting portion 16 of the cutting section to rotate. Because the edge cutting portion 14 and the center cutting portion 16 rotate in different directions, the reaction torques of the cutting sections cancel each other out.

Claims

1. Multi-screw gear combination type pipe-crossing one-time hole drilling tool, characterized by: include: The main body is a cylindrical structure with the power part installed inside and the transmission part installed at the end; The power part converts the power fluid energy into rotational output, including: At least two drilling assemblies arranged parallel to the main body and working in parallel; The overall structure is disc-shaped, fixedly connected to the main body, and is installed at both ends of the drilling tool assembly and the left and right support plates are fixedly connected circumferentially; The transmission part is installed at one end of the main body, and converts the rotation output by the power part into two coaxial outputs of forward and reverse rotation with the help of the planetary gear train. The transmission part includes: The overall structure is disc-shaped and fixedly connected to the left base at the end of the main body; The overall structure is disc-shaped, and is installed on the right base at a side of the left base away from the main body and is fixedly connected to the left base; The axis of the sun gear coincides with the axis of the left base and is installed in the middle of the left base and the right base; an edge wheel disposed outside the sun wheel; an intermediate gear mounted between the sun gear and the edge gear and meshing with the sun gear and the edge gear; The intermediate wheel is fixedly connected to the intermediate wheel in the circumferential direction, and is arranged between the left base and the right base, and passes through the left base and is installed with the rotating shaft of the connecting part; A hollow structure, passing through the left and right bases, through the sun gear and the flow cylinder with the two circumferentially fixedly connected; The overall structure is cylindrical, and the transmission sleeve is installed on the outside of the edge wheel and is fixedly connected circumferentially; The connecting part is a universal coupling, which connects the input shaft of the transmission part and the output shaft of the power part; The cutting part uses the two coaxial rotations of the transmission part, forward and reverse, to perform cutting and crushing, including: The overall structure is annular, connected to the transmission sleeve and with the edge cutting part of the rock breaking unit installed on the outside; The overall structure is a disc shape, connected to the flow tube and with a rock breaking unit installed on the outside, including a central cutting portion connected to the axial through hole in the inner space of the flow tube.

2. The multi-screw gear combination type pipe-crossing one-time hole-forming drilling tool according to claim 1, characterized in that: The power part comprises: a middle support plate which has a disc-shaped overall structure and is installed in the middle area of ​​the drilling tool assembly housing and is passed through by the drilling tool assembly.

3. The multi-screw gear combination type pipe-crossing one-time hole-forming drilling tool according to claim 1, characterized in that: The transmission sleeve and the left base are axially fixed by adopting step surface matching.

4. The multi-screw gear combination type pipe-crossing one-time hole-forming drilling tool according to claim 1, characterized in that: The transmission part includes: a barrier cylinder with an overall cylindrical structure and installed between the right base and the left base.

5. The multi-screw gear combination type pipe-crossing one-time hole-forming drilling tool according to claim 1, characterized in that: The transmission part includes: a connecting bolt that passes through the left base and the right base and fixes the two.

6. The multi-screw gear combination type pipe-crossing one-time hole-forming drilling tool according to claim 5, characterized in that: The connecting bolt passes through the barrier cylinder.

7. The multi-screw gear combination type pipe-crossing one-time hole-forming drilling tool according to claim 1, characterized in that: Also includes: A drag ring is provided at the front end of the cutting part and is connected to the drag tube.

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