Coal seam drilling sieve tube taking-out device
By designing a coal seam drilling screen pipe extraction device for underground operation of coal mines, the screen pipe is driven by the variable diameter head and lengthened pipe to drive the screen pipe movement, the problem of deep hole water injection caused by the obstruction of the screen pipe is solved, and efficient drilling is achieved The effect of reusing pore resources and reducing dust concentration.
Patent Information
- Application Number
- CN202421227067.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-31
AI Technical Summary
During coal mining, when drilling holes in this coal seam for deep hole injection, the sealer cannot be inserted smoothly due to obstruction of the screen pipe, resulting in the water injection process that cannot be carried out normally, affecting the work efficiency and source dust control effect.
A drilling screen pipe extraction device for this coal seam is designed, including a variable diameter head, an extended pipe and a moving device. The contact block is driven to move through a wire rope, and friction is generated to drive the screen pipe to move, so as to realize the removal of the screen pipe.
The device simplifies the pipe extraction operation process, reduces the labor intensity of workers, improves the reuse rate of drilling resources, and indirectly generates economic benefits by reducing dust concentration.
Smart Images
Figure CN222457408U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of taking out tools, in particular to a coal seam drilling screen pipe taking out device. Background Art
[0002] In the process of coal mining, in order to achieve good dust reduction effect and improve water injection efficiency, deep hole water injection operation is required in the borehole of the coal seam. However, when reusing the original borehole for deep hole water injection, the screen pipe in the borehole of the coal seam hinders the smooth insertion of the hole sealer, and thus the normal water injection process cannot be carried out. This has become an important bottleneck that limits work efficiency, increases additional workload, and affects dust control at the source. Utility Model Content
[0003] The utility model aims to provide a coal seam drilling screen tube removal device to ensure that deep hole water injection operation can be carried out smoothly and improve the efficiency of dust control at the source.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coal seam drilling screen pipe removal device, comprising a variable diameter head, a rear end of the variable diameter head is provided with an extension tube, a free end of the extension tube is provided with a moving device, a rear end of the variable diameter head is provided with a connecting hole for connecting with the extension tube, a functional hole is provided at the front end of the connecting hole, a moving hole can be provided at the functional hole, a slider is slidably connected in the moving hole, a reset spring is provided between the moving hole and the slider, a connecting column is provided at the front end of the slider, a rotating rod is rotatably connected at the front end of the connecting column, a trapezoidal movable groove is provided on the side wall of the variable diameter head, a sliding groove is provided on the side wall of the movable groove, a moving block is slidably connected in the sliding groove, the moving block is connected to a connecting block, a contact block is fixedly connected to the bottom end of the connecting block, the contact block is placed in the movable groove, the top of the connecting block is rotatably connected to the rotating rod, a wire rope is connected to the rear end of the slider, and the free end of the wire rope is connected to the moving device through the inside of the extension tube.
[0005] Preferably, the extension tube comprises a plurality of hollow tubes connected end to end.
[0006] Preferably, a threaded column is provided at the front end of the hollow tube, a threaded hole matching with the threaded column is provided at the rear end of the hollow tube, and the threaded column and the connecting hole are threadedly connected.
[0007] Preferably, the surface of the contact block is provided with anti-slip textures.
[0008] Preferably, the moving device comprises a handle, a grip is provided on the handle, a connecting ring is provided at the front end of the handle, a connecting rope is fixedly connected to the connecting ring, a free end of the connecting rope is connected to a rotating drum, and the handle can control the rotation of the rotating drum.
[0009] Preferably, a connecting sleeve is sleeved on the front end of the handle, and a free end of the connecting sleeve is sleeved on the rear end of the extension tube.
[0010] The principle and beneficial effects of this technical solution:
[0011] The utility model is placed inside the screen tube, and pulling the wire rope can move the contact block, thereby moving the contact block inside the variable diameter head until the contact block abuts against the inner wall of the screen tube. The variable diameter head and the screen tube directly generate a large friction force, which can drive the screen tube to move by moving the utility model.
[0012] (1) The utility model can be widely used in underground coal mine working environments, especially in situations where it is necessary to reuse drilled holes for deep hole water injection, and can be applicable to the mining working faces of various coal mining enterprises and other similar drilling management scenarios.
[0013] (2) The pipe extraction operation process is simplified, the labor intensity of workers is reduced, and the reuse rate of drilling resources is greatly improved.
[0014] (3) It has high practical value and economic benefits: each borehole can take out up to 80 screen tubes, and about 1,100 boreholes can be processed per year, which can save a lot of money on material costs. In addition, the device can be used to take out the screen tubes for deep hole water injection, which can further reduce the dust concentration on the working surface and indirectly generate economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A schematic diagram of the structure of a coal seam drilling screen tube removal device provided in an embodiment of the utility model;
[0016] In the figure: 1. variable diameter head; 2. extension tube; 3. moving device; 4. connecting hole; 5. functional hole; 6. moving hole; 7. slider; 8. reset spring; 9. connecting column; 10. rotating rod; 11. trapezoidal movable groove; 12. slide groove; 13. moving block; 14. connecting block; 15. contact block; 16. wire rope; 17. threaded column; 18. threaded hole; 19. handle; 20. handgrip; 21. connecting ring; 22. rotating drum; 23. connecting rope; 24. connecting sleeve. DETAILED DESCRIPTION
[0017] The present invention is further described in detail below with reference to the accompanying drawings and implementation modes:
[0018] Example:
[0019] like Figure 1The coal seam drilling screen pipe removal device shown in the figure comprises a variable diameter head 1, an extension tube 2 is arranged at the rear end of the variable diameter head 1, a moving device 3 is arranged at the free end of the extension tube 2, a connecting hole 4 for connecting with the extension tube 2 is arranged at the rear end of the variable diameter head 1, a functional hole 5 is opened at the front end of the connecting hole 4, a moving hole 6 can be opened at the functional hole 5, a slider 7 is slidably connected in the moving hole 6, a reset spring 8 is arranged between the moving hole 6 and the slider 7, a connecting column 9 is arranged at the front end of the slider 7, a rotating rod 10 is rotatably connected at the front end of the connecting column 9, a trapezoidal movable groove 11 is opened on the side wall of the variable diameter head 1, a slide groove 12 is opened on the side wall of the movable groove, a moving block 13 is slidably connected in the slide groove 12, the moving block 13 is connected to the connecting block 14, a contact block 15 is fixedly connected to the bottom end of the connecting block 14, the contact block 15 is placed in the movable groove, the top of the connecting block 14 is rotatably connected to the rotating rod 10, a wire rope 16 is connected to the rear end of the slider 7, and the free end of the wire rope 16 is connected to the moving device 3 through the inside of the extension tube 2.
[0020] The extension tube 2 comprises a plurality of hollow tubes connected end to end.
[0021] A threaded column 17 is arranged at the front end of the hollow tube, and a threaded hole 18 matching with the threaded column 17 is arranged at the rear end of the hollow tube. The threaded column 17 and the connecting hole 4 are threadedly connected.
[0022] The surface of the contact block 15 is provided with anti-skid patterns, the interior of the contact block 15 is made of a hard material, and the surface can be made of a material such as rubber, silicone, etc. that has a large friction force when in contact with an object.
[0023] The moving device 3 can pull the steel wire rope 16 to deform the variable diameter head 1, and fix the steel wire rope 16 after pulling. There are many existing technologies for such devices, which can be replaced. The moving device 3 of this embodiment includes a handle 19, a hand grip 20 is provided on the handle 19, and a connecting ring 21 is provided at the front end of the handle 19. The steel wire rope 16 can be directly tied to the connecting ring 21 to achieve fixation. The connecting ring 21 is fixedly connected to a connecting rope 23, and the free end of the connecting rope 23 is connected to a rotating drum 22. The handle 20 can control the rotation of the rotating drum 22 and rotate the rotating drum 22. The connecting rope 23 can be wound around the rotating drum 22. This process is equivalent to pulling the connecting ring 21 to move backward, that is, pulling the steel wire rope 16 to move backward. The resistance between the handle 20 and the handle 19 can ensure that the handle 20 will not easily recover after rotating unless subjected to a certain external force.
[0024] A connecting sleeve 24 is sleeved on the front end of the handle 19 , and a free end of the connecting sleeve 24 is sleeved on the rear end of the extension tube 2 to connect the handle 19 and the extension tube 2 .
[0025] The specific implementation process is as follows:
[0026] According to the position of the screen tube, the extension tube 2 is spliced so that the length of the extension tube 2 can reach the screen tube, and the variable diameter head 1 is installed at the front end of the extension tube 2, so that the wire rope 16 passes through the extension tube 2, and the connecting sleeve 24 is installed at the rear end of the extension tube 2, so that the wire rope 16 passes through the connecting sleeve 24 and is connected to the connecting ring 21, and the excessively long wire rope 16 is inserted into the connecting sleeve 24, and the handle 19 and the connecting sleeve 24 are installed. After the installation is completed, the variable diameter head 1 is placed inside the screen tube, and the handle 19 is held with one hand, and the handle 20 is turned with the other hand to move the wire rope 16, driving the contact block 15 inside the variable diameter head 1 to move until the handle 20 cannot be turned. At this time, the contact block 15 abuts against the inner wall of the screen tube, and the screen tube can be moved together by moving the utility model. After the device is used, the handle 20 is reset, and the contact block 15 will be reset under the action of the reset spring 8, and the device can be taken out of the screen tube.
[0027] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical scheme or characteristics in the scheme is not described in detail here. For those skilled in the art, without departing from the technical scheme of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. A coal seam drilling screen tube removal device, characterized in that: The invention comprises a variable diameter head (1), wherein the rear end of the variable diameter head (1) is provided with an extension tube (2), the free end of the extension tube (2) is provided with a moving device (3), the rear end of the variable diameter head (1) is provided with a connecting hole (4) for connecting with the extension tube (2), the front end of the connecting hole (4) is provided with a functional hole (5), the functional hole (5) can be provided with a moving hole (6), a slider (7) is slidably connected in the moving hole (6), a return spring (8) is provided between the moving hole (6) and the slider (7), a connecting column (9) is provided at the front end of the slider (7), and the front end of the connecting column (9) is rotatably connected with a rotating shaft (6). The variable diameter head (1) has a trapezoidal movable groove (11) on its side wall, and a slide groove (12) on its side wall. A moving block (13) is slidably connected in the slide groove (12). The moving block (13) is connected to a connecting block (14). A contact block (15) is fixedly connected to the bottom end of the connecting block (14). The contact block (15) is placed in the movable groove. The top end of the connecting block (14) is rotatably connected to the rotating rod (10). The rear end of the slider (7) is connected to a steel wire rope (16). The free end of the steel wire rope (16) is connected to the moving device (3) through the inside of the extension tube (2).
2. The coal seam drilling screen pipe removal device according to claim 1 is characterized in that: The extension tube (2) comprises a plurality of hollow tubes connected end to end.
3. The coal seam drilling screen pipe removal device according to claim 2 is characterized in that: The front end of the hollow tube is provided with a threaded column (17), the rear end of the hollow tube is provided with a threaded hole (18) matching with the threaded column (17), and the threaded column (17) and the connecting hole (4) are threadedly connected.
4. The coal seam drilling screen pipe removal device according to claim 1 is characterized in that: The surface of the contact block (15) is provided with anti-slip textures.
5. The coal seam drilling screen pipe removal device according to claim 1 is characterized in that: The moving device (3) comprises a handle (19), a handgrip (20) is arranged on the handle (19), a connecting ring (21) is arranged at the front end of the handle (19), a connecting rope (23) is fixedly connected to the connecting ring (21), a free end of the connecting rope (23) is connected to a rotating drum (22), and the handgrip (20) can control the rotation of the rotating drum (22).
6. The coal seam drilling screen pipe removal device according to claim 5 is characterized in that: The front end of the handle (19) is sleeved with a connecting sleeve (24), and the free end of the connecting sleeve (24) is sleeved on the rear end of the extension tube (2).