Coal mine coal seam roof crack detection device and method

Abstract

The present invention discloses a device and method for detecting cracks in the roof of a coal seam in a coal mine, which belongs to the technical field of coal seam mining in a coal mine, and comprises an installation assembly connected to a drilling machine body and two lifting assemblies connected to the top of the installation assembly, wherein the two lifting assemblies are respectively connected to a drilling assembly and a detection assembly; the detection assembly comprises an assembly plate, a forward and reverse motor 1, a hollow tube and a water pressure detector, wherein the assembly plate is connected to the lifting assembly, the bottom end of the assembly plate is connected to a forward and reverse motor 1, the output shaft of the forward and reverse motor 1 is connected to a hollow tube with a closed bottom through a coupling, the side of the hollow tube is connected to a water pressure detector, the bottom and side of the hollow tube are both connected to a recording member, the recording member comprises an installation box and an infrared camera, and a rectangular channel is provided on the side of the installation box. The device and method for detecting cracks in the roof of a coal seam in a coal mine can not only drill and detect, but also ensure installation stability and perform conversion.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine coal seam mining, and particularly relates to a coal mine coal seam roof crack detection device and method. 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, it is generally chosen to dig tunnels underground to mine coal, which is an underground coal mine. When the coal seam is very close to the surface, it is generally chosen to directly strip the surface soil layer to mine coal, which is an open-pit coal mine. The vast majority of coal mines in my country are underground coal mines. The scope of coal mines includes a large area above ground, underground and related facilities.

[0003] The mining of coal mine working faces often leads to the destruction and deformation of the overlying rock strata, which causes the local development of water-conducting fissures in the roof to penetrate into the aquifer section. The aquifer water has infiltrated into the working face of the mining area, and as the mining face continues to advance, it gradually becomes the main source of mine water inrush. Therefore, frequent exploration is required to protect the safety of subsequent construction. The current exploration equipment is limited to manual exploration, and the exploration range is limited.

[0004] Therefore, in view of this situation, there is an urgent need to design and produce a coal mine coal seam roof crack detection device and method to meet the needs of actual use. Summary of the invention

[0005] The object of the present invention is to provide a device and method for detecting cracks in the roof of a coal seam in a coal mine, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a coal mine coal seam roof crack detection device, comprising a mounting assembly connected to a drilling machine body and two lifting assemblies connected to the top of the mounting assembly, wherein the two lifting assemblies are respectively connected to a drilling assembly and a detection assembly;

[0007] The detection combination includes an assembly plate, a forward and reverse motor, a hollow tube and a water pressure detector. The assembly plate is connected to the lifting assembly. The bottom end of the assembly plate is connected to the forward and reverse motor. The output shaft of the forward and reverse motor is connected to the hollow tube with the bottom end in a closed state through a coupling. The side of the hollow tube is connected to the water pressure detector. The bottom and side of the hollow tube are both connected to recording components.

[0008] In a further embodiment, the recording element includes an installation box and an infrared camera, a rectangular channel is opened on the side of the installation box, an inner wall of the rectangular channel is connected to an observation window, and an inner wall of the installation box away from the observation window is connected to the infrared camera.

[0009] In a further embodiment, linear reciprocating motors are connected to both sides of the installation box, an auxiliary plate is connected between the two linear reciprocating motors, and a rubber plate for cleaning the observation window is connected to the side of the auxiliary plate.

[0010] In a further embodiment, the mounting assembly includes a mounting plate, a counterweight plate and a side support plate, the mounting plate is arranged above the counterweight plate, the mounting plate is rotatably connected to the counterweight plate through a bearing, the outer periphery of the counterweight plate is connected to a plurality of side support plates arranged in a circular array, a threaded channel is provided at the top of the side support plate, an anchor rod is threadedly connected to the threaded channel, and circular channels for drilling combinations and exploration combinations are provided at the tops of the mounting plate and the counterweight plate.

[0011] In a further embodiment, a rotating motor is connected to the side of the counterweight plate, the output shaft of the rotating motor is connected to a rotating rod through a coupling, the top of the rotating rod is connected to a driving gear, and the outer periphery of the mounting plate is connected to a hollow gear meshing with the driving gear.

[0012] In a further embodiment, the lifting combination includes a support rod, a threaded rod and a cross plate, an auxiliary block connected to the top of the mounting combination is arranged below the cross plate, a support rod is connected between the cross plate and the auxiliary block, the auxiliary block is rotatably connected to the threaded rod through a bearing, a forward and reverse motor 2 is connected to the top of the cross plate, the output shaft of the forward and reverse motor 2 is connected to a rotating rod through a coupling, and the rotating rod passes through the cross plate and is connected to the threaded rod.

[0013] In a further embodiment, the outer peripheral thread of the threaded rod is connected to a threaded tube, a sliding groove is opened on the side of the support rod, the side of the threaded tube is connected to an auxiliary plate, and the side of the auxiliary plate and the side of the threaded tube are both connected to a slider adapted to the sliding groove.

[0014] In a further embodiment, the drilling assembly comprises a rotary motor and a round rod, the output shaft of the rotary motor is connected to the round rod via a coupling, and the outer circumference of the round rod is connected to a spiral sheet.

[0015] A method for detecting cracks in a coal seam roof of a coal mine comprises the following steps:

[0016] S1. Move the whole to the designated position in advance, and then connect it to the ground with anchor rods;

[0017] S2, then turn on the rotary motor of the drilling assembly and the forward and reverse motor 2 connected to the drilling assembly, the rotary motor drives the round rod and the spiral piece to perform rotary drilling, the forward and reverse motor 2 drives the threaded rod to rotate, the auxiliary threaded pipe and the auxiliary plate to move, and thus the spiral piece can achieve deep drilling;

[0018] S3, after the drilling is completed, the forward and reverse motors 2 are controlled to rotate in the reverse direction, so that the drilling assembly is reset;

[0019] S4, then controlling the rotary motor to drive the driving gear to rotate, thereby driving the hollow gear and the mounting plate to rotate, so that the hollow tube of the detection assembly is aligned with the circular channel;

[0020] S5. Then turn on the forward and reverse motor 1 of the detection combination and the forward and reverse motor 2 of the detection combination. The forward and reverse motor 1 drives the hollow tube to rotate, so that the water pressure detector and the infrared camera can achieve all-round detection. The forward and reverse motor 2 drives the threaded rod to rotate, and the auxiliary threaded tube and the auxiliary plate move, thereby realizing the downward movement of the hollow tube.

[0021] Technical effects and advantages of the present invention:

[0022] The coal seam roof crack detection device and method of the coal mine benefit from the design of the detection assembly. The lifting assembly drives the detection assembly to move downward, thereby realizing the detection. The water pressure detector can assist in the measurement of water pressure. Two infrared cameras respectively shoot from two directions. The linear reciprocating motor drives the auxiliary plate to move back and forth, thereby making the rubber pad clean the observation window, thereby ensuring the operation of the infrared camera.

[0023] Thanks to the design of the installation combination, the anchor rod can ensure the overall stability. The rotating motor drives the installation plate to rotate, which can change the position of the hollow tube and the round rod to meet different usage needs.

[0024] Thanks to the design of the lifting combination and the design of the threaded rod, the adjustment range can be improved, and the cooperation of the support rod and the cross plate can ensure stability.

[0025] The device and method for detecting cracks in the coal seam roof of a coal mine can not only drill and detect, but also ensure installation stability and perform conversion. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 It is a schematic diagram of the structure of the detection combination of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the installation box of the present invention;

[0029] Figure 4 A top view of the installation box of the present invention;

[0030] Figure 5 It is a structural schematic diagram of the installation combination of the present invention;

[0031] Figure 6 It is a structural schematic diagram of the lifting combination of the present invention.

[0032] In the figure: 1. Installation assembly; 2. Lifting assembly; 3. Drilling assembly; 4. Exploration assembly; 41. Assembly plate; 42. Forward and reverse motor one; 43. Hollow tube; 44. Water pressure detector; 45. Installation box; 46. Infrared camera; 47. Linear reciprocating motor; 48. Auxiliary plate; 11. Installation plate; 12. Counterweight plate; 13. Side support plate; 14. Anchor rod; 15. Rotating motor; 16. Driving gear; 17. Hollow gear; 21. Cross plate; 22. Auxiliary block; 23. Support rod; 24. Forward and reverse motor two; 25. Threaded rod; 26. Threaded tube; 27. Auxiliary plate; 31. Rotating motor; 32. Round rod; 33. Spiral sheet. DETAILED DESCRIPTION

[0033] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0034] In order to achieve the exploration and ensure the comprehensiveness of the exploration, such as Figures 1 to 6 The coal seam roof crack detection device shown in the figure comprises an installation assembly 1 connected to a drilling machine body and two lifting assemblies 2 connected to the top of the installation assembly 1, wherein the two lifting assemblies 2 are respectively connected to a drilling assembly 3 and a detection assembly 4; the detection assembly 4 comprises an assembly plate 41, a forward and reverse motor 42, a hollow tube 43 and a water pressure detector 44, the assembly plate 41 is connected to the lifting assembly 2, the bottom end of the assembly plate 41 is connected to a forward and reverse motor 42, the output shaft of the forward and reverse motor 42 is connected to a hollow tube 43 with a closed bottom end through a coupling, the hollow design of the hollow tube 43 is convenient for the wires to pass through, the side of the hollow tube 43 is connected to a water pressure detector 44, and the bottom and side of the hollow tube 43 are both connected There is a recording part, which includes an installation box 45 and an infrared camera 46. A rectangular channel is opened on the side of the installation box 45, and the inner wall of the rectangular channel is connected to an observation window. The inner wall of the installation box 45 away from the observation window is connected to the infrared camera 46. Linear reciprocating motors 47 are connected to both sides of the installation box 45. An auxiliary plate 48 is connected between the two linear reciprocating motors 47. A rubber plate for cleaning the observation window is connected to the side of the auxiliary plate 48. The water pressure detector 44 can assist in the measurement of water pressure. The two infrared cameras 46 take pictures from two directions respectively. The linear reciprocating motor 47 drives the auxiliary plate 48 to move back and forth, so that the rubber pad cleans the observation window to ensure the operation of the infrared camera 46.

[0035] refer to Figure 1 and Figure 5In order to ensure the stability of the installation and perform conversion to meet the two usage modes, the installation assembly 1 includes a mounting plate 11, a counterweight plate 12 and a side support plate 13. The mounting plate 11 is arranged above the counterweight plate 12, and the mounting plate 11 is rotatably connected to the counterweight plate 12 through a bearing. The outer periphery of the counterweight plate 12 is connected with a plurality of side support plates 13 arranged in a circular array, and a threaded channel is provided at the top of the side support plate 13, and an anchor rod 14 is threadedly connected to the threaded channel. The tops of the mounting plate 11 and the counterweight plate 12 are both provided with circular channels for the drilling assembly 3 and the exploration assembly 4. A rotating motor 15 is connected to the side of the counterweight plate 12, and the output shaft of the rotating motor 15 is connected to a rotating rod through a coupling, and the top of the rotating rod is connected to a driving gear 16. The outer periphery of the mounting plate 11 is connected with a hollow gear 17 meshing with the driving gear 16, which is beneficial for the anchor rod 14 to ensure the overall stability. The rotating motor 15 drives the mounting plate 11 to rotate, and can convert the positions of the hollow tube 43 and the round rod 32 to meet different usage needs.

[0036] refer to Figure 1 and Figure 6 In order to lift and lower and increase the adjustment range, the lifting assembly 2 includes a support rod 23, a threaded rod 25 and a cross plate 21. An auxiliary block 22 connected to the top of the installation assembly 1 is arranged below the cross plate 21. The support rod 23 is connected between the cross plate 21 and the auxiliary block 22. The auxiliary block 22 is rotatably connected to the threaded rod 25 through a bearing. The top of the cross plate 21 is connected to the forward and reverse motor 24. The output shaft of the forward and reverse motor 24 is connected to the rotating rod through a coupling. The rotating rod passes through the cross plate 21 and is connected to the threaded rod 25. The outer peripheral thread of the threaded rod 25 is connected to a threaded tube 26. A slide groove is provided on the side of the support rod 23, and an auxiliary plate 27 is connected to the side of the threaded tube 26. The side of the auxiliary plate 27 and the side of the threaded tube 26 are both connected with sliders adapted to the slide groove.

[0037] refer to Figure 1 In order to carry out drilling and facilitate subsequent exploration, the drilling assembly 3 includes a rotating motor 31 and a round rod 32. The output shaft of the rotating motor 31 is connected to the round rod 32 through a coupling. The outer periphery of the round rod 32 is connected to a spiral piece 33. The bottom end of the round rod 32 is configured as a conical surface, and the shape of the lower half of the spiral piece 33 is configured with a smaller inner diameter.

[0038] A method for detecting cracks in a coal seam roof of a coal mine comprises the following steps:

[0039] S1, the whole is driven to the designated position in advance, and then connected to the ground by anchor rod 14;

[0040] S2, then turn on the rotary motor 31 of the drilling assembly 3 and the forward and reverse motor 24 connected to the drilling assembly 3, the rotary motor 31 drives the round rod 32 and the spiral piece 33 to perform rotary drilling, the forward and reverse motor 24 drives the threaded rod 25 to rotate, the auxiliary threaded tube 26 and the auxiliary plate 27 to move, and then the spiral piece 33 can achieve deep drilling;

[0041] S3, after the drilling is completed, the forward and reverse motor 24 is controlled to rotate in the reverse direction, so that the drilling assembly 3 is reset;

[0042] S4, then control the rotating motor 15 to drive the driving gear 16 to rotate, and then drive the hollow gear 17 and the mounting plate 11 to rotate, so that the hollow tube 43 of the detection assembly 4 is aligned with the circular channel;

[0043] S5. Then turn on the forward and reverse motor 1 42 of the detection combination 4 and the forward and reverse motor 2 24 of the detection combination 4. The forward and reverse motor 1 42 drives the hollow tube 43 to rotate, so that the water pressure detector 44 and the infrared camera 46 can achieve all-round detection. The forward and reverse motor 24 drives the threaded rod 25 to rotate, and the auxiliary threaded tube 26 and the auxiliary plate 48 move, thereby realizing the downward movement of the hollow tube 43.

[0044] Finally, it should be noted that the above description is only the preferred content of the present invention and is not intended to limit the present invention.

Claims

1. A coal mine coal seam roof crack detection device, comprising a mounting assembly (1) connected to a drilling machine body and two lifting assemblies (2) connected to the top of the mounting assembly (1), characterized in that: The two lifting assemblies (2) are respectively connected to a drilling assembly (3) and an exploration assembly (4); The detection assembly (4) comprises an assembly plate (41), a forward and reverse motor (42), a hollow tube (43) and a water pressure detector (44); the assembly plate (41) is connected to the lifting assembly (2); the bottom end of the assembly plate (41) is connected to the forward and reverse motor (42); the output shaft of the forward and reverse motor (42) is connected to the hollow tube (43) whose bottom end is in a closed state through a coupling; the side of the hollow tube (43) is connected to the water pressure detector (44); the bottom and side of the hollow tube (43) are both connected to a recording component; the recording component comprises an installation box (45) and an infrared camera (46); a rectangular channel is opened on the side of the installation box (45); an observation window is connected to the inner wall of the rectangular channel; the inner wall of the installation box (45) away from the observation window is connected to the infrared camera (46); the installation assembly (1) comprises an installation plate (11) , a counterweight plate (12) and a side support plate (13), the mounting plate (11) being arranged above the counterweight plate (12), the mounting plate (11) being rotatably connected to the counterweight plate (12) via a bearing, the outer periphery of the counterweight plate (12) being connected to a plurality of side support plates (13) arranged in a circular array, the top of the side support plate (13) being provided with a threaded channel, the threaded channel being threadedly connected to an anchor rod (14), the tops of the mounting plate (11) and the counterweight plate (12) being provided with circular channels for the drilling assembly (3) and the exploration assembly (4); the side of the counterweight plate (12) being connected to a rotating motor (15), the output shaft of the rotating motor (15) being connected to a rotating rod via a coupling, the top of the rotating rod being connected to a driving gear (16), the outer periphery of the mounting plate (11) being connected to a hollow gear (17) meshing with the driving gear (16).

2. A coal mine coal seam roof crack detection device according to claim 1, characterized in that: Both sides of the installation box (45) are connected to linear reciprocating motors (47), an auxiliary plate (48) is connected between the two linear reciprocating motors (47), and a rubber plate for cleaning the observation window is connected to the side of the auxiliary plate (48).

3. A coal mine coal seam roof crack detection device according to claim 1, characterized in that: The lifting assembly (2) comprises a support rod (23), a threaded rod (25) and a transverse plate (21); an auxiliary block (22) connected to the top of the mounting assembly (1) is arranged below the transverse plate (21); a support rod (23) is connected between the transverse plate (21) and the auxiliary block (22); the auxiliary block (22) is rotatably connected to the threaded rod (25) via a bearing; a forward and reverse motor 2 (24) is connected to the top of the transverse plate (21); an output shaft of the forward and reverse motor 2 (24) is connected to a rotating rod via a coupling; the rotating rod passes through the transverse plate (21) and is connected to the threaded rod (25).

4. A coal mine coal seam roof crack detection device according to claim 3, characterized in that: The outer periphery of the threaded rod (25) is threadedly connected to a threaded tube (26); a sliding groove is provided on the side of the support rod (23); an auxiliary plate (27) is connected to the side of the threaded tube (26); and a sliding block adapted to the sliding groove is connected to the side of the auxiliary plate (27) and the side of the threaded tube (26).

5. A coal mine coal seam roof crack detection device according to claim 1, characterized in that: The drilling assembly (3) comprises a rotating motor (31) and a round rod (32); the output shaft of the rotating motor (31) is connected to the round rod (32) via a coupling; and the outer periphery of the round rod (32) is connected to a spiral sheet (33).

6. A method for detecting cracks in the roof of a coal seam in a coal mine, implemented based on the device for detecting cracks in the roof of a coal seam in a coal mine according to claim 1, characterized in that: The following steps are involved: S1, driving the whole to a designated position in advance, and then connecting it to the ground using an anchor rod (14); S2, then turning on the rotating motor (31) of the drilling assembly (3) and the forward and reverse motor 2 (24) connected to the drilling assembly (3), the rotating motor (31) drives the round rod (32) and the spiral piece (33) to perform rotating drilling, the forward and reverse motor 2 (24) drives the threaded rod (25) to rotate, the auxiliary threaded tube (26) and the auxiliary plate (27) to move, and thus the depth drilling of the spiral piece (33) is achieved; S3, after the drilling is completed, the forward and reverse motor 2 (24) is controlled to rotate in the reverse direction, so that the drilling assembly (3) is reset; S4, then controlling the rotating motor (15) to drive the driving gear (16) to rotate, thereby driving the hollow gear (17) and the mounting plate (11) to rotate, so that the hollow tube (43) of the detection assembly (4) is aligned with the circular channel; S5, then start the forward and reverse motor 1 (42) of the detection assembly (4) and the forward and reverse motor 2 (24) connected to the detection assembly (4), the forward and reverse motor 1 (42) drives the hollow tube (43) to rotate, so that the water pressure detector (44) and the infrared camera (46) can achieve all-round detection, the forward and reverse motor 2 (24) drives the threaded rod (25) to rotate, the auxiliary threaded tube (26) and the auxiliary plate (48) to move, and then the hollow tube (43) can move downward.

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