Drilling device used in pipeline

Abstract

The utility model discloses a drilling device used in a pipeline, which comprises a shell, a first bevel gear set, a first input shaft and a first output shaft are arranged in the shell, the first bevel gear set is in 90-degree transmission, the first input shaft and the first output shaft are connected with the first bevel gear set, the first input shaft is connected with a first motor, the first output shaft is connected with a screw rod, and the outside of the screw rod is in threaded connection with a screw sleeve. The screw sleeve extends out of the shell and is in vertical sliding connection with the shell; a second bevel gear set in 90-degree transmission, a second input shaft and a second output shaft are further arranged in the shell, the second input shaft and the second output shaft are connected with the second bevel gear set, the second input shaft is of a cylindrical structure and coaxially arranged on the outer side of the first input shaft in a sleeving mode, the second input shaft is in transmission connection with a second motor, the second output shaft is connected with a drill bit, and the drill bit and a screw sleeve are coaxially arranged. The drill bit is axially supported by a mechanical structure to jack up, so that the drill bit drills along the radial direction of the pipeline, the tapping is more stable and reliable, the labor intensity is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to drilling tools, specifically a device for drilling holes inside pipelines. Background Technology

[0002] Currently, the main structure of the drill bit used for radial drilling inside the tubing is that the drill bit is driven to rotate by a motor through a set of bevel gears. When in use, the front end of the drill bit is inserted into the inside of the pipe, and the drill bit and the drill bit body are arranged in an L-shape. The drill bit is started and the drill bit is pressed down to open a radial hole in the inner wall of the tubing.

[0003] Due to the limited internal dimensions of the tubing, operators can only press down on the end of the drill bit outside the tubing to force the drill bit at the front of the drill bit to drill forward. This method cannot guarantee the application of axial pressure to the drill bit. Pressing down on the end of the drill bit can easily cause the drill bit to tilt, which in turn causes the borehole to tilt and makes it impossible to drill along the radial direction of the pipeline. Moreover, this internal drilling method is quite time-consuming and labor-intensive. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a drilling device for pipelines. This device has a compact and reasonable structure. When operating inside oil pipes, the drill bit is axially supported by a mechanized structure, allowing the drill bit to drill radially along the pipeline. This makes hole opening more stable and reliable, reduces labor intensity, and improves work efficiency.

[0005] The technical solution of this utility model is as follows: the housing is provided with a first bevel gear set that is driven at 90°, and a first input shaft and a first output shaft connected to the first bevel gear set. The first input shaft is driven by a first motor. The free end of the first output shaft is coaxially connected to a lead screw. The lead screw is externally threaded with a threaded sleeve. The threaded sleeve extends out of the housing and is vertically slidably connected to the housing.

[0006] The housing also includes a second bevel gear set with a 90° transmission angle, a second input shaft and a second output shaft connected to the second bevel gear set. The second input shaft is a cylindrical structure and is coaxially sleeved on the outside of the first input shaft. The second input shaft is connected to the second motor for transmission. The free end of the second output shaft is coaxially connected to a drill bit, and the drill bit is coaxially arranged with the thread sleeve.

[0007] Preferably, the free end of the sheath is connected to a top cap made of flexible material.

[0008] Preferably, the free end of the second output shaft is provided with a drill chuck, and the drill bit is fixed by the drill chuck.

[0009] Preferably, the second motor and the second input shaft are connected by a reduction gear set.

[0010] Compared with the prior art, this utility model has the following advantages:

[0011] This utility model has a compact and reasonable structure, and can be used in oil pipes with small diameters. When working in oil pipes, the mechanized structure maintains axial support for the drill bit to advance, so that the drill bit can drill radially along the pipe, making the hole opening more stable and reliable, reducing labor intensity and improving work efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the distribution of the bevel gear set;

[0014] In the diagram: 1. Housing, 2. First motor, 3. Second motor, 4. Spur gear set, 5. First input shaft, 6. First bevel gear set, 7. First output shaft, 8. Lead screw, 9. Lead sleeve, 10. Top cap, 11. Second bevel gear set, 12. Second output shaft, 13. Drill bit, 14. Second input shaft, 15. Drill chuck. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example 1

[0016] like Figure 1 and Figure 2 A drilling device for pipelines includes a housing 1, and a jacking assembly and a drilling assembly are provided inside the housing 1.

[0017] The jacking assembly includes a first bevel gear set 6 arranged in the housing 1 at a 90° angle for transmission, and a first input shaft 5 and a first output shaft 7 connected to the first bevel gear set 6. The first input shaft 5 and the first output shaft 7 are rotatably connected to the housing 1 through bearings.

[0018] The first input shaft 5 is connected to the first motor 2 for transmission. The free end of the first output shaft 7 is coaxially connected to the lead screw 8. The lead screw 8 is externally threaded with a threaded sleeve 9. The threaded sleeve 9 extends out of the housing 1 and is vertically slidably connected to the housing 1.

[0019] The drilling assembly includes a second bevel gear set 11 arranged in the housing 1 at a 90° angle for transmission, and a second input shaft 14 and a second output shaft 12 connected to the second bevel gear set 11.

[0020] The second input shaft 14 has a cylindrical structure and is coaxially sleeved on the outside of the first input shaft 5. Both the second input shaft 14 and the second output shaft 12 are rotatably connected to the housing 1 through bearings.

[0021] The second input shaft 14 is connected to the second motor 3 for transmission, and the free end of the second output shaft 12 is coaxially connected to the drill bit 13, which is arranged coaxially with the thread sleeve 9.

[0022] The first motor 2 and the second motor 3 can be installed inside or outside the housing 1, depending on the specific dimensions of the selected motor.

[0023] Working principle:

[0024] When in use, the first motor 2 is started to drive the first input shaft 5 to rotate, and then the first output shaft 7 is driven to rotate the lead screw 8 after the first bevel gear set 6 reverses the transmission. The threaded sleeve 9, which is threaded with the lead screw 8, moves axially outward to support the tube wall and generate axial support force on the drill bit 13.

[0025] At the same time, the second motor 3 is started to drive the second input shaft 14 to rotate, and then the second output shaft 12 is driven to drive the drill bit 13 to drill through the second bevel gear set 11 after reversing transmission.

[0026] The axial support force of the jacking component on the drilling component replaces the manual operation of pressing the drill bit down outside the pipe when the traditional drill bit opens radially inside the pipe. The mechanical structure maintains axial support for the drill bit 13 to advance, so that the drill bit 13 can drill radially along the pipe. The hole opening is more stable and reliable, and the labor intensity is reduced, which improves the work efficiency. Example 2

[0027] This embodiment is a further optimization based on the above embodiment, specifically:

[0028] like Figure 1 The free end of the threaded sleeve 9 is connected to a top cap 10 made of flexible material, which improves the fit between the threaded sleeve 9 and the inner wall of the pipe during jacking, and makes the contact support more stable.

[0029] like Figure 1 A drill chuck 15 is provided at the free end of the second output shaft 12, and the drill bit 13 is fixed by the drill chuck 15. The drill bit 13 can be replaced by installing the drill chuck 15, making it more flexible to use.

[0030] like Figure 1 The second motor 3 and the second input shaft 14 are connected by a reduction spur gear set 4, which increases torque while reducing speed, making drilling more stable.

[0031] This utility model is not limited to the above-described embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model, and the changed content still falls within the protection scope of this utility model.

Claims

1. A drilling device for pipes, comprising a housing, characterized in that: The housing is provided with a first bevel gear set that is driven at 90°, and a first input shaft and a first output shaft connected to the first bevel gear set. The first input shaft is driven by a first motor. The free end of the first output shaft is coaxially connected to a lead screw. The lead screw is externally threaded with a threaded sleeve. The threaded sleeve extends out of the housing and is vertically slidably connected to the housing. The housing also includes a second bevel gear set with a 90° transmission angle, a second input shaft and a second output shaft connected to the second bevel gear set. The second input shaft is a cylindrical structure and is coaxially sleeved on the outside of the first input shaft. The second input shaft is connected to the second motor for transmission. The free end of the second output shaft is coaxially connected to a drill bit, and the drill bit is coaxially arranged with the thread sleeve.

2. The drilling device for pipelines according to claim 1, characterized in that: The free end of the sheath is connected to a top cap made of flexible material.

3. The drilling device for pipelines according to claim 1, characterized in that: The free end of the second output shaft is provided with a drill chuck, and the drill bit is fixed by the drill chuck.

4. The drilling device for pipelines according to claim 1, characterized in that: The second motor is connected to the second input shaft via a reduction spur gear set.

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