Directional long drill hole lower screen pipe guiding device

Abstract

The utility model relates to the technical field of coal layer gas exploitation, in particular to a directional long drill hole lower screen pipe guiding device. The utility model provides a directional long drill hole lower screen pipe guiding device which can be used for installing connecting discs with different sizes, is convenient to adapt to screen pipes with different sizes, can scrape off convex blocks on the inner wall of a drill hole, ensures smooth operation of lower screen pipes, and improves construction efficiency. A directional long drill hole lower screen pipe guiding device comprises a motor, a transmission shaft and the like, and the transmission shaft is connected to an output shaft of the motor. Protruding blocks on the inner wall of a drill hole are scraped off through the cutting disc, then the connecting disc is connected to the mounting frame in a clamped mode, the nut is rotated, and the connecting disc is fixed, so that the purposes that the connecting discs of different sizes can be mounted, screen pipes of different sizes can be conveniently adapted, the protruding blocks on the inner wall of the drill hole can be scraped off, and the machining efficiency is improved are achieved. Smooth operation of the lower screen pipe is ensured, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal seam gas mining, in particular to a directional long borehole lower screen pipe guide device. Background Art

[0002] Directional long borehole screen guide technology is an advanced underground drilling and roof caving technology, mainly used for underground gas extraction, water exploration, grouting, exploration and other operations in coal mines. It is necessary to install screens in the borehole to achieve specific functions.

[0003] The existing directional long borehole lower screen pipe guiding device usually installs the screen pipe directly on the threaded drill, and then brings the threaded drill into the borehole through a controller to make the screen pipe move downward in the borehole. However, this device is not convenient for installing screen pipes of different sizes, and when there are bumps on the inner wall of the borehole, it is easy to cause the screen pipe to get stuck when descending, thereby affecting the construction efficiency and being relatively inconvenient.

[0004] Therefore, it is necessary to design a directional long borehole screen pipe guide device that can install connecting plates of different sizes, adapt to screen pipes of different sizes, and scrape off the bumps on the inner wall of the borehole to ensure smooth operation of the screen pipe and improve construction efficiency. Utility Model Content

[0005] In order to overcome the disadvantages of the existing directional long borehole lower screen pipe guiding device, which is not convenient for installing screen pipes of different sizes and easily causes the screen pipe to get stuck and fail when descending when there are bumps on the inner wall of the borehole, thereby affecting the construction efficiency, the utility model provides a directional long borehole lower screen pipe guiding device which can install connecting plates of different sizes, is convenient for adapting to screen pipes of different sizes, can scrape off the bumps on the inner wall of the borehole, ensures smooth operation of the lower screen pipe, and improves the construction efficiency.

[0006] The technical solution is: a directional long-hole lower screen pipe guiding device, comprising a motor, a transmission shaft and a threaded drill, the motor output shaft is connected to the transmission shaft, and the lower side of the transmission shaft is connected to the threaded drill.

[0007] As an improvement of the above solution, a cutting disc is also included, and the lower part of the transmission shaft is connected with the cutting disc.

[0008] As an improvement of the above solution, a casing is also included, and the outer side of the motor is connected to the casing.

[0009] As an improvement of the above scheme, it also includes telescopic rods, connecting plates and springs. The upper and lower parts of the casing are slidably connected to multiple groups of telescopic rods, each group consists of two telescopic rods, and a connecting plate is connected between the two groups of telescopic rods in the same longitudinal direction. The upper and lower parts of the connecting plate are connected to multiple groups of springs between the casing, and each group consists of two springs.

[0010] As an improvement of the above solution, it also includes a mounting frame and a connecting plate. The lower side of the housing is connected to the mounting frame, and the connecting plate is detachably connected to the mounting frame.

[0011] As an improvement of the above solution, a nut is also included, and the lower part of the mounting frame is threadedly connected with the nut.

[0012] Beneficial effects: 1. The utility model scrapes off the bumps on the inner wall of the drill hole through the cutting disc, then clamps the connecting disc on the mounting frame, and then rotates the nut to fix the connecting disc, so that connecting discs of different sizes can be installed, which is convenient for adapting to screen pipes of different sizes, and can scrape off the bumps on the inner wall of the drill hole, ensuring smooth operation of the lower screen pipe and improving construction efficiency.

[0013] 2. The utility model moves the screen tube downward by moving the threaded drill downward, so that the connecting plate contacts the drill hole, the telescopic rod moves, and the spring rebounds after contraction, thereby achieving the effect of guiding and limiting the casing and preventing the threaded drill from causing the motor to rotate due to hard obstacles. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the first new type of three-dimensional structure of the present utility model.

[0015] Figure 2 This is a schematic diagram of the second novel three-dimensional structure of the present utility model.

[0016] The reference numbers in the figure are: 1. motor, 2. transmission shaft, 3. threaded drill, 4. cutting disc, 5. sleeve, 6. telescopic rod, 7. connecting plate, 8. spring, 9. mounting bracket, 10. connecting disc, 11. nut. DETAILED DESCRIPTION

[0017] The above scheme is further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the present application and are not limited to the scope of the present application. The implementation conditions adopted in the examples can be further adjusted according to the conditions of the specific manufacturer, and the unspecified implementation conditions are usually the conditions in conventional experiments.

[0018] A directional long borehole screen guide device, such as Figure 1 and Figure 2As shown, it includes a motor 1, a transmission shaft 2, a threaded drill 3, a cutting disk 4, a casing 5, a telescopic rod 6, a connecting plate 7, a spring 8, a mounting frame 9, a connecting disk 10 and a nut 11. The transmission shaft 2 is connected to the output shaft of the motor 1, the threaded drill 3 is connected to the lower side of the transmission shaft 2, the cutting disk 4 is connected to the lower part of the transmission shaft 2, the casing 5 is connected to the outer side of the motor 1, the upper and lower parts of the casing 5 are slidably connected with six groups of telescopic rods 6, each group consists of two telescopic rods 6, a connecting plate 7 is connected between the two groups of telescopic rods 6 in the same longitudinal direction, the upper and lower parts of the connecting plate 7 are connected to six groups of springs 8 between the casing 5, each group consists of two springs 8, the lower side of the casing 5 is connected to the mounting frame 9, the connecting disk 10 is detachably connected to the mounting frame 9, and the nut 11 is threadedly connected to the lower part of the mounting frame 9.

[0019] When using the device, first install the screen tube on the connecting plate 10, then put the threaded drill 3 into the borehole, then start the motor 1 to drive the transmission shaft 2 to rotate, so that the threaded drill 3 rotates, the threaded drill 3 moves downward, the screen tube moves downward, the connecting plate 7 contacts the borehole, the telescopic rod 6 moves, and the spring 8 rebounds after contraction, so that the sleeve 5 can be guided and limited to prevent the threaded drill 3 from rotating due to hard obstacles. When the threaded drill 3 moves downward, the protrusions on the inner wall of the borehole are scraped off by the cutting disk 4. When the same screen pipe is lowered, the nut 11 can be rotated to make the nut 11 move downward under the action of the thread, and then the connecting disk 10 is taken out, and then the connecting disks 10 of different sizes are clamped on the mounting frame 9, and then the nut 11 is rotated to make the nut 11 move upward under the action of the thread to fix the connecting disk 10, so that connecting disks 10 of different sizes can be installed, which is convenient for adapting to screen pipes of different sizes, improves the flexibility of using the device, and can scrape off the bumps on the inner wall of the borehole, ensures smooth operation of lowering the screen pipe, and improves construction efficiency.

[0020] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A directional long borehole screen guide device, characterized in that: It comprises a motor (1), a transmission shaft (2) and a threaded drill (3), wherein the output shaft of the motor (1) is connected to the transmission shaft (2), and the lower side of the transmission shaft (2) is connected to the threaded drill (3); It also comprises a telescopic rod (6), a connecting plate (7) and a spring (8); the upper and lower parts of the casing (5) are both slidably connected to a plurality of groups of telescopic rods (6), each group consisting of two telescopic rods (6); a connecting plate (7) is connected between the two groups of telescopic rods (6) in the same longitudinal direction; the upper and lower parts of the connecting plate (7) are both connected to a plurality of groups of springs (8) between the casing (5), each group consisting of two springs (8); It also includes a mounting frame (9) and a connecting plate (10), wherein the mounting frame (9) is connected to the lower side of the casing (5), and the connecting plate (10) is detachably connected to the mounting frame (9).

2. A directional long borehole screen guide device as claimed in claim 1, characterized in that: It also includes a cutting disc (4), and the lower part of the transmission shaft (2) is connected to the cutting disc (4).

3. A directional long borehole lower screen guide device as claimed in claim 1, characterized in that: It also includes a casing (5), and the outer side of the motor (1) is connected to the casing (5).

4. A directional long borehole lower screen guide device as claimed in claim 1, characterized in that: It also includes a nut (11), and the lower part of the mounting frame (9) is threadedly connected with the nut (11).

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