Drilling rig for coal mining

Abstract

The invention provides a drilling device for coal mining, and belongs to the technical field of drilling equipment, the drilling device comprises a drilling outer cylinder, a slip ring structure, a measurement and control storage structure, a heat dissipation structure and a sealing transmission structure are sequentially arranged in the drilling outer cylinder from top to bottom, and the slip ring structure comprises an upper plug; the lower end face of the upper plug is fixedly connected with the upper main support through a circle of large bolts. According to the measurement and control storage structure, a measurement and control storage circuit board is fixed to the lower end face of a main drilling frame, and the main drilling frame is downwards connected with an accelerometer fixing frame. The heat dissipation structure comprises a heat dissipation support, and the heat dissipation support is fixedly connected with the main drilling frame through screws. The electricity generated by the upper turbine generator is utilized to enable electronic components to work continuously, normal work of the measurement and control storage circuit is guaranteed, and the stability of coal geology during drilling exploration is further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of drilling equipment and relates to a drilling device for coal mine mining. Background Art

[0002] Coal mines are areas where humans mine coal resources in coal-rich mining areas. They are generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, the general choice is to dig tunnels underground to mine coal. This is an underground coal mine. When the coal seam is very close to the surface, the general choice is to directly strip the surface soil layer to mine coal. This is an open-pit coal mine. The vast majority of coal mines in my country are underground coal mines. Coal mines are reasonable spaces excavated by humans when digging coal-rich geological layers. They usually include tunnels, shafts, and mining faces, etc. At present, the exploration of coal mine geology is generally carried out by drilling. When drilling coal mine geology with drilling equipment, the operator is required to support the drilling equipment. However, the drilling equipment is prone to tilt due to vibration during operation. When the drilling equipment tilts, the borehole will also tilt, resulting in the sampling equipment being unable to enter the interior of the coal mine geology through the borehole for sampling. The operator needs to drill holes again on the surface of the coal mine, which affects the efficiency of coal mine geological exploration. Summary of the Invention

[0003] In order to solve the technical problems existing in the above background technology, the present invention provides a drilling device for coal mining, comprising: a drilling outer cylinder, in which a slip ring structure, a measurement, control and storage structure, a heat dissipation structure and a sealing transmission structure are sequentially arranged from top to bottom. An upper plug is buckled on the upper end of the drilling outer cylinder, a limit screw is installed in the outer diameter hole of the upper plug, and the inner end of the limit screw is connected to the transmission shaft of the upper turbine generator; The slip ring structure includes an upper plug, the lower end surface of which is fixedly connected to the upper main bracket through a circle of large bolts; The measurement, control and storage structure is a measurement, control and storage circuit board fixed on the lower end surface of the main drilling frame, and the main drilling frame is connected downwardly to an accelerometer fixing frame; The heat dissipation structure includes a heat dissipation bracket, which is fixedly connected to the main drilling frame by screws; The sealed transmission structure comprises a drilling frame joint, which is fixedly connected to the main drilling frame.

[0004] Furthermore, a high-pressure sealing element is buckled upwardly into the inner hole of the upper main bracket, and a shock-absorbing pad is mounted on the lower end step of the upper main bracket.

[0005] Furthermore, the lower end surface of the shock-absorbing pad is in press-contact with the slip ring bracket sleeve, a slip ring guide sleeve is installed in the inner hole of the slip ring bracket sleeve facing the shock-absorbing pad, the slip ring guide sleeve is fixedly connected to the lower end of the upper main bracket by screws, a slip ring spring is installed downward in the inner hole of the upper main bracket, and the lower end of the slip ring spring is in press-contact with the upper end of the slip ring quick-connect ring; Furthermore, the outer diameter of the slip ring quick-connect ring is buckled with the slip ring guide sleeve, and an aviation quick connector is installed in the inner hole of the slip ring quick-connect ring. The aviation quick connector is buckled downward with the plug-in fixing frame. The flange at the lower end of the plug-in fixing frame is fixedly connected to the slip ring bracket sleeve through another circle of large bolts, and the slip ring bracket sleeve is fixedly connected to the main drilling frame through another set of screws; Furthermore, the main drilling frame is connected downwardly to an accelerometer fixing frame, an accelerometer is fixed to the upper portion of the accelerometer fixing frame by a plurality of small bolts, an integrated circuit board is fixed to the lower portion of the accelerometer fixing frame by another small bolt, the main drilling frame is fixed to the fixing frame by another screw, and a power module is installed on the fixing frame; Furthermore, a radial spring is installed in the inner cavity of the heat dissipation bracket, and the outer end of the spring is connected to the radiator body. Under the action of the spring force, the outer wall of the radiator body contacts the inner wall of the drilling outer cylinder, so that the heat generated by the electronic components in the drilling equipment during operation can be dissipated, ensuring the safety of the electrical components; Furthermore, the main drilling frame is fixed downwardly with the lower main bracket and the lower plug, a pin is buckled in the inner hole of the lower main bracket, and an anti-loosening screw is installed in the outer diameter hole of the lower plug, and the inner end of the anti-loosening screw is connected to the drive shaft of the lower turbine generator.

[0006] The beneficial effects of the present invention are: The present invention provides a drilling device for coal mining, comprising: a drilling outer cylinder, in which a slip ring structure, a measurement and control storage structure, a heat dissipation structure and a sealing transmission structure are sequentially arranged from top to bottom. The slip ring structure is adopted to enable a rapid self-check of the drilling position point after the tool is assembled, and to quickly read and replay the stored operation data after the operation is completed, so that the disassembly and assembly of the drilling equipment is more convenient; the real-time parameters of the drilling well trajectory are measured and stored by the measurement and control storage structure, and the storage time is long and the capacity is large; the output torque of the turbine generator under the control of the control instruction realizes the stability or rotation of the control shaft, and the storage control The program implements small closed-loop control downhole and can issue control instructions to enable the tool's deflection correction and stabilization functions to be realized; the heat generated by the electronic components in the drilling equipment during operation can be dissipated through the heat dissipation structure, ensuring the safety of the electrical components and the normal operation time of the tool; the sealed transmission structure is used to make the drilling equipment firmly sealed and transmit control instructions to control the torque motor, so that the tool's deflection correction and stabilization functions can be implemented; the electricity generated by the upper turbine generator is used to enable the electronic components to work continuously, ensuring the normal operation of the measurement, control and storage circuits, and further improving the stability of coal geology during drilling exploration.

[0007] Advantages of additional aspects of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0009] Figure 1 This is a schematic structural diagram of a drilling device for coal mining according to the present invention; Including: 1. Upper plug, 2. Drilling outer cylinder, 3. Combined sealing ring, 4. Upper main bracket, 5. O-ring, 6. High-pressure sealing element, 7. Large bolt, 8. Shock absorber, 9. Slip ring bracket, 10. Rubber seal, 11. Slip ring guide sleeve, 12. Slip ring spring, 13. Screw, 14. Slip ring quick connector, 15. Aviation quick connector, 16. Plug-in fixing bracket, 17. Main drilling frame, 18. Measurement and control circuit board, 19. Shock absorber , 20. Accelerometer fixing bracket, 21. Accelerometer, 22. Small bolt, 23. Integrated circuit board, 24. Fixing bracket, 25. Power module, 26. Radiator body, 27. Spring, 28. Heat dissipation bracket, 29. Drilling frame joint, 30. Static sealing element, 31. Lower main bracket, 32. Pin, 33. Lower plug, 34. Anti-loosening screw, 35. Upper turbine generator, 36. Lower turbine generator, 37. Limit screw. DETAILED DESCRIPTION

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0011] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this embodiment have the same meaning as commonly understood by those skilled in the art to which the present invention belongs.

[0012] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0013] In the present invention, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention, and do not specifically refer to any part or element in the present invention, and should not be understood as limiting the present invention.

[0014] In the present invention, terms such as "fixed connection," "connected," and "connection" should be interpreted broadly to mean a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediary. Relevant researchers or technicians in this field may determine the specific meanings of these terms in the present invention based on specific circumstances, and they should not be construed as limitations of the present invention.

[0015] Example 1, as Figure 1 As shown, this embodiment provides a drilling device for coal mining, comprising: The drilling outer tube 2 has a slip ring structure, a measurement and control storage structure, a heat dissipation structure and a sealing transmission structure arranged in sequence from top to bottom. The upper end of the drilling outer tube 2 is buckled with an upper plug 1, and a limit screw 37 is installed in the outer diameter hole of the upper plug 1. The inner end of the limit screw 37 is in contact with the transmission shaft of the upper turbine generator 35; the lower end face of the upper plug 1 is fixedly connected to the upper main bracket 4 through a circle of large bolts 7; a high-pressure sealing element 6 is buckled upward in the inner hole of the upper main bracket 4, and a shock-absorbing pad 8 is mounted on the lower end step of the upper main bracket 4; the lower end face of the shock-absorbing pad 8 is in press-contact with the slip ring bracket sleeve 9, and the slip ring bracket sleeve 9 faces the inner side of the shock-absorbing pad 8. A slip ring guide sleeve 11 is installed in the hole, and the slip ring guide sleeve 11 is fixedly connected to the lower end of the upper main bracket 4 by screws 13. A slip ring spring 12 is installed downward in the inner hole of the upper main bracket 4, and the lower end of the slip ring spring 12 is pressed and contacted with the upper end of the slip ring quick connect ring 14; the outer diameter of the slip ring quick connect ring 14 is buckled with the slip ring guide sleeve 11, and an aviation quick connector 15 is installed in the inner hole of the slip ring quick connect ring 14. The aviation quick connector 15 is buckled downward with the plug-in fixing frame 16. The flange at the lower end of the plug-in fixing frame 16 is fixedly connected to the slip ring bracket sleeve 9 by another circle of large bolts 7, and the slip ring bracket sleeve 9 is fixedly connected to the main drilling frame 17 by another set of screws 13; The measurement, control and storage structure is that a measurement, control and storage circuit board 18 is fixed to the lower end surface of the main drilling frame 17, and the main drilling frame 17 is downwardly connected to an accelerometer fixing frame 20, an accelerometer 21 is fixed to the upper part of the accelerometer fixing frame 20 by multiple small bolts 22, and an integrated circuit board 23 is fixed to the lower part of the accelerometer fixing frame 20 by another small bolt 22, and the main drilling frame 17 is fixed to a fixing frame 24 by another screw 13, and a power module 25 is installed on the fixing frame 24; the heat dissipation structure includes a heat dissipation bracket 28, and the heat dissipation bracket 28 is fixedly connected to the main drilling frame 17 by screws. The inner cavity of the heat dissipation bracket 28 is equipped with a radial spring 27, and the outer end of the spring 27 is connected to the radiator body 26. Under the action of the spring force of the spring 27, the outer wall of the radiator body 26 contacts the inner wall of the drilling outer cylinder 2, so that the heat generated by the electronic components in the drilling equipment during operation can be dissipated, ensuring the safety of the electrical components; The sealed transmission structure includes a drilling frame joint 29, which is fixedly connected to the main drilling frame 17. The main drilling frame 17 is fixed downwardly to the lower main bracket 31 and the lower plug 33. A pin 32 is buckled into the inner hole of the lower main bracket 31, and an anti-loosening screw 34 is installed in the outer diameter hole of the lower plug 33. The inner end of the anti-loosening screw 34 is connected to the drive shaft of the lower turbine generator 36.

[0016] A combined sealing ring 3 is installed between the outer wall of the upper plug 1 and the inner wall of the drilling outer tube 2, and between the outer wall of the lower plug 33 and the inner wall of the drilling outer tube 2; an O-ring 5 is provided between the outer wall of the upper main bracket 4 and the inner wall of the upper plug 1, and between the outer wall of the lower main bracket 31 and the inner wall of the lower plug 33; a rubber seal 10 is installed between the outer wall of the slip ring bracket sleeve 9 and the inner wall of the drilling outer tube 2, a shock-absorbing ring 19 is installed between the outer wall of the main drilling frame 17 below the measurement and control circuit board 18 and the inner wall of the drilling outer tube 2, and a static sealing element 30 is installed between the outer wall of the drilling frame joint 29 and the inner wall of the drilling outer tube 2.

[0017] During operation, the slip ring structure is adopted to enable a rapid self-inspection of the drilling position after the tool is assembled, and the stored operation data can be quickly read and played back after the operation is completed, making the disassembly and assembly of the drilling equipment more convenient; the real-time parameters of the drilling wellbore trajectory are measured and stored through the measurement, control and storage structure, and the storage time is long and the capacity is large. The output torque of the turbine generator under the control of the control instruction realizes the stability or rotation of the control shaft, and the stored control program realizes the downhole small closed-loop control, and can issue control instructions to realize the tool's deflection correction and stabilization functions; the heat dissipation structure allows the heat generated by the electronic components in the drilling equipment during operation to be dissipated, ensuring the safety of the electrical components and the normal operation time of the tool; the sealed transmission structure is used to make the drilling equipment firmly sealed and transmit control instructions to control the torque motor, so that the tool's deflection correction and stabilization functions can be implemented; the electricity generated by the upper turbine generator is used to enable the electronic components to work continuously, ensuring the normal operation of the measurement, control and storage circuit.

[0018] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A drilling device for coal mining, characterized in that: include: The drilling outer cylinder (2) is provided with a slip ring structure, a measurement and control storage structure, a heat dissipation structure and a sealing transmission structure in sequence from top to bottom. The upper end of the drilling outer cylinder (2) is buckled with an upper plug (1), the outer diameter hole of the upper plug (1) is equipped with a limit screw (37), and the inner end of the limit screw (37) is connected to the transmission shaft of the upper turbine generator (35); The slip ring structure comprises an upper plug (1), the lower end surface of the upper plug (1) being fixedly connected to the upper main bracket (4) via a circle of large bolts (7); The measurement, control and storage structure is a measurement, control and storage circuit board (18) fixed on the lower end surface of the main drilling frame (17), and the main drilling frame (17) is connected downwardly to an accelerometer fixing frame (20); The heat dissipation structure includes a heat dissipation bracket (28), and the heat dissipation bracket (28) is fixedly connected to the main drilling frame (17) by screws; The sealed transmission structure comprises a drilling frame joint (29), and the drilling frame joint (29) is fixedly connected to the main drilling frame (17).

2. A drilling device for coal mining according to claim 1, characterized in that: A high-pressure sealing element (6) is buckled upwardly into the inner hole of the upper main bracket (4), and a shock-absorbing pad (8) is sleeved on the lower end step of the upper main bracket (4).

3. The drilling device for coal mining according to claim 1, characterized in that: The lower end surface of the shock-absorbing pad (8) is in press-contact with the slip ring bracket sleeve (9); a slip ring guide sleeve (11) is installed in the inner hole of the slip ring bracket sleeve (9) facing the shock-absorbing pad (8); the slip ring guide sleeve (11) is fixedly connected to the lower end of the upper main bracket (4) through a screw (13); a slip ring spring (12) is installed downward in the inner hole of the upper main bracket (4); the lower end of the slip ring spring (12) is in press-contact with the upper end of the slip ring quick-connect ring (14).

4. A drilling device for coal mining as claimed in claim 3, characterized in that: The outer diameter of the slip ring quick-connect ring (14) is buckled with the slip ring guide sleeve (11), and an aviation quick connector (15) is installed in the inner hole of the slip ring quick-connect ring (14). The aviation quick connector (15) is buckled downward with the plug-in fixing frame (16). The flange at the lower end of the plug-in fixing frame (16) is fixedly connected to the slip ring bracket sleeve (9) through another circle of large bolts (7), and the slip ring bracket sleeve (9) is fixedly connected to the main drilling frame (17) through another set of screws (13).

5. The drilling device for coal mining according to claim 1, characterized in that: The main drilling frame (17) is connected downwardly to an accelerometer fixing frame (20), an accelerometer (21) is fixed to the upper portion of the accelerometer fixing frame (20) by a plurality of small bolts (22), an integrated circuit board (23) is fixed to the lower portion of the accelerometer fixing frame (20) by another small bolt (22), the main drilling frame (17) is fixed to a fixing frame (24) by another screw (13), and a power module (25) is installed on the fixing frame (24).

6. The drilling device for coal mining according to claim 1, characterized in that: The inner cavity of the heat dissipation bracket (28) is equipped with a radial spring (27), and the outer end of the spring (27) is connected to the radiator body (26). Under the action of the spring force of the spring (27), the outer wall of the radiator body (26) contacts the inner wall of the drilling outer cylinder (2), so that the heat generated by the electronic components in the drilling equipment during operation can be dissipated, ensuring the safety of the electrical components.

7. The drilling device for coal mining according to claim 1, characterized in that: The main drilling frame (17) is fixed downwardly with the lower main bracket (31) and the lower plug (33). A pin (32) is buckled in the inner hole of the lower main bracket (31), and a locking screw (34) is installed in the outer diameter hole of the lower plug (33). The inner end of the locking screw (34) is connected to the transmission shaft of the lower turbine generator (36).

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