Controllable seismic source for coal mine underground slot wave detection

Abstract

The utility model discloses a controllable seismic source for coal mine underground slot wave detection, and relates to the technical field of coal mine detection. The controllable seismic source comprises a first moving structure and a second moving structure, lifting devices are fixedly mounted at the top ends of the first moving structure and the second moving structure, and a signal generator and a controller are arranged at the top ends of the first moving structure and the second moving structure respectively; a signal generator, a controller, a signal receiving device and a signal transmitting device on the placing platform can be driven to move by utilizing a driving crawler belt at the side end of the placing platform, and a built-in motor contained in a positioning device is matched to promote a threaded ring to drive a sleeving plate to drive a grounding plate below a follower plate to gradually contact with the ground through a screw rod; the ground contact plate supports the placing platform away from the ground, so that the fixing process of the signal generator, the controller, the signal receiving device and the signal transmitting device is time-saving and labor-saving, and the underground detection efficiency is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal mine detection technical field, concretely is controllable seismic source for coal mine underground channel wave detection. BACKGROUND

[0002] Channel wave seismic exploration is a detection method using guided wave excited and propagated in coal seam to explore the structural distribution and thickness variation of coal seam. Channel wave detection has the advantages of long detection distance, high precision, strong anti-interference ability, easy-to-identify waveform characteristics and intuitive final results, especially in detection accuracy and distance, which is superior to other underground exploration methods. Channel wave seismic exploration can detect small faults, collapse columns, coal seam bifurcation and thinning zones, goaf and abandoned roadway and other geological anomalies. Reflection channel wave exploration can not only detect the internal structure of the working face, but also detect the geological structure in front of the roadway, and has a wide range of applications.

[0003] According to the search, the patent publication No. CN213876046U discloses a seismic source for coal mine underground channel wave exploration. It belongs to the field of coal mine detection, and the signal generator and the controller can be disassembled through the fixing nails, which is simple and convenient to operate, and solves the problem of inconvenient disassembly of the controller and the signal generator.

[0004] However, the above-mentioned scheme still has some shortcomings in actual use. In the technical scheme, the signal generator, the controller, the signal receiving device and the signal transmitting device on the fixed plate are fixed on the ground near the mine shaft by using the fixed pile. However, this fixing method needs manual on-site piling, which is time-consuming and labor-intensive, and thus affects the efficiency of underground detection. Utility model content

[0005] The utility model provides a controllable seismic source for coal mine underground channel wave detection to solve the problem in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a controllable seismic source for coal mine underground channel wave detection, comprising a first mobile structure and a second mobile structure, the top end of the first mobile structure and the second mobile structure is fixedly installed with lifting device, the top end of the first mobile structure and the second mobile structure is provided with signal generator and controller respectively, two lifting devices are movably connected with signal receiving device and signal transmitting device respectively.

[0007] The first mobile structure and the second mobile structure are the same structure, the first mobile structure includes a placing platform, the side end of the placing platform is provided with a drive track, and the inside of the placing platform is provided with a positioning device.

[0008] The positioning device includes a drive box. A screw is rotatably connected to the inner wall of the drive box via a built-in motor. A threaded ring is threaded onto the surface of the screw. A sleeve plate is movably sleeved on the outer side of the threaded ring via a damping spring. An inclined block is fixedly installed on the inner wall of the drive box, and a follower plate is slidably connected thereto. The top end of the sleeve plate overlaps with the slope of the inclined block, and the bottom end of the sleeve plate overlaps with the top end of the follower plate. A contact plate is fixedly installed at the bottom end of the follower plate, and the contact plate is located below the drive box.

[0009] Furthermore, a pulley is provided at the top of the socket plate, and the pulley overlaps with the slope of the inclined block.

[0010] Furthermore, a slider is fixedly installed at the bottom end of the socket plate, and the slider is slidably connected to the inner wall of the groove opened inside the follower plate.

[0011] Furthermore, a locking gear is fixedly sleeved on the surface of the screw, and a locking rack is slidably connected to the inner wall of the drive box via an electric push rod, with the locking rack located behind the locking gear.

[0012] Furthermore, the lifting device includes a mounting frame, an external power supply is provided on the outside of the mounting frame, and a winding roller is rotatably connected to the inside of the mounting frame. A lifting rope is wound around the surface of the winding roller, and the lifting rope is wound around the top of the signal receiving device and the signal transmitting device respectively.

[0013] Compared with the prior art, this utility model provides a controllable seismic source for underground channel wave detection in coal mines, which has the following beneficial effects:

[0014] This controllable seismic source for underground channel wave detection in coal mines, through the setting of a first moving structure and a second moving structure, utilizes the drive track at the side end of the placement platform to drive the signal generator, controller, signal receiver, and signal transmitter on the placement platform to move. In conjunction with the built-in motor of the positioning device, a screw drives the threaded ring to drive the sleeve plate, which in turn drives the contact plate below the follower plate to gradually contact the ground. This causes the contact plate to lift the placement platform off the ground, making the fixing process of the signal generator, controller, signal receiver, and signal transmitter time-saving and labor-saving, thereby improving the efficiency of underground detection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the placement platform of this utility model;

[0017] Figure 3 This is a cross-sectional view of the drive box of this utility model;

[0018] Figure 4This is a schematic diagram of the lifting device of this utility model.

[0019] In the diagram: 1. First moving structure; 101. Placement platform; 102. Drive track; 103. Positioning device; 104. Drive box; 105. Built-in motor; 106. Screw; 107. Locking gear; 108. Follower rack; 109. Threaded ring; 110. Sleeve plate; 111. Damping spring; 112. Pulley; 113. Inclined block; 114. Slider; 115. Follower plate; 116. Contact plate; 2. Second moving structure; 3. Lifting device; 301. Mounting frame; 302. External power supply; 303. Take-up roller; 4. Signal generator; 5. Controller; 6. Signal receiving device; 7. Signal transmitting device. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-4 This utility model discloses a controllable vibration source for detecting channel waves in coal mines, including a first moving structure 1 and a second moving structure 2. A lifting device 3 is fixedly installed at the top of both the first moving structure 1 and the second moving structure 2. A signal generator 4 and a controller 5 are respectively provided at the top of the first moving structure 1 and the second moving structure 2. A signal receiving device 6 and a signal transmitting device 7 are respectively movably connected to the two lifting devices 3.

[0022] The first moving structure 1 and the second moving structure 2 have the same structure. The first moving structure 1 includes a placement platform 101, a drive track 102 is provided on the side of the placement platform 101, and a positioning device 103 is provided inside the placement platform 101.

[0023] The positioning device 103 includes a drive box 104. The inner wall of the drive box 104 is rotatably connected to a screw 106 via a built-in motor 105. A threaded ring 109 is threaded onto the surface of the screw 106. A sleeve plate 110 is movably sleeved on the outer side of the threaded ring 109 via a damping spring 111. An inclined block 113 is fixedly installed on the inner wall of the drive box 104, and a follower plate 115 is slidably connected thereto. The top end of the sleeve plate 110 overlaps with the slope of the inclined block 113, and the bottom end of the sleeve plate 110 overlaps with the top end of the follower plate 115. A contact plate 116 is fixedly installed on the bottom end of the follower plate 115, and the contact plate 116 is located below the drive box 104.

[0024] By setting up the first moving structure 1 and the second moving structure 2, the drive track 102 on the side of the placement platform 101 can drive the signal generator 4, controller 5, signal receiver 6 and signal transmitter 7 on the placement platform 101 to move. In addition, the built-in motor 105 included in the positioning device 103 drives the threaded ring 109 through the screw 106 to drive the sleeve plate 110 to drive the contact plate 116 below the follower plate 115 to gradually contact the ground. This makes the contact plate 116 lift the placement platform 101 off the ground, making the fixing process of the signal generator 4, controller 5, signal receiver 6 and signal transmitter 7 time-saving and labor-saving, thereby improving the efficiency of downhole exploration.

[0025] Specifically, the top of the socket plate 110 is provided with a pulley 112, which overlaps with the slope of the inclined block 113.

[0026] In this embodiment, the pulley 112, driven by the ramp of the inclined block 113, causes the pulley 112 to cause the relative position of the sleeve plate 110 and the threaded ring 109 to change, so that the sleeve plate 110 gradually descends.

[0027] Specifically, a slider 114 is fixedly installed at the bottom end of the socket plate 110, and the slider 114 is slidably connected to the inner wall of the groove opened inside the follower plate 115.

[0028] In this embodiment, during the descent of the socket plate 110, the relative position of the slider 114 and the follower plate 115 changes, so that the socket plate 110 can move horizontally and vertically at the same time.

[0029] Specifically, a locking gear 107 is fixedly sleeved on the surface of the screw 106, and a locking rack 108 is slidably connected to the inner wall of the drive box 104 through an electric push rod. The locking rack 108 is located behind the locking gear 107.

[0030] In this embodiment, the electric push rod is activated, causing the locking rack 108 to move and gradually engage with the locking gear 107. This locks the locking gear 107, preventing the screw 106 from rotating and allowing the contact plate 116 to stably support the placement platform 101.

[0031] Specifically, the lifting device 3 includes a mounting frame 301, an external power supply 302 is provided on the outer side of the mounting frame 301, and a take-up roller 303 is rotatably connected to the inner side of the mounting frame 301. A lifting rope is wound around the surface of the take-up roller 303, and the lifting rope is wound around the top of the signal receiving device 6 and the signal transmitting device 7 respectively.

[0032] In this embodiment, the external power supply 302 is activated, which drives the lifting rope to unfold through the winding roller 303. This causes the lifting rope to gradually lower the signal receiving device 6 and the signal transmitting device 7. Then, the signal transmitting device 7 is activated to generate vibration in the coal seam. The signal receiving device 6 receives the groove wave, the controller 5 controls the signal receiving device 6 to receive the signal, and the signal generator 4 provides an electrical signal to the signal transmitting device 7.

[0033] In use, the placement platform 101 is moved by driving the track 102, so that the first moving structure 1 is placed in one roadway of the working face, and then the second moving structure 2 is placed in another roadway of the working face.

[0034] Then, the drive track 102 is stopped, and the positioning device 103 is activated, causing the built-in motor 105 inside the drive box 104 to drive the screw 106 to rotate. This causes the screw 106 to drive the threaded ring 109 to move in the axial direction, which in turn causes the threaded ring 109 to drive the sleeve plate 110 to move in the axial direction. As the sleeve plate 110 moves laterally, the pulley 112 gradually contacts the ramp of the inclined block 113. Under the action of the ramp of the inclined block 113, the pulley 112 causes the relative position of the sleeve plate 110 and the threaded ring 109 to change, causing the sleeve plate 110 to gradually descend. During the descent of the sleeve plate 110, the relative position of the slider 114 and the follower plate 115 changes, allowing the sleeve plate 110 to move both laterally and vertically.

[0035] The follower plate 115 gradually descends under the drive of the sleeve plate 110, causing the follower plate 115 to drive the contact plate 116 to gradually contact the ground, causing the contact plate 116 to lift the placement platform 101 off the ground, causing the contact plate 116 to replace the drive track 102 to lift the placement platform 101, so that the placement platform 101 can be fixed in the current position.

[0036] Next, the electric push rod is activated, which causes the locking rack 108 to move, so that the locking rack 108 gradually meshes with the locking gear 107, and the locking gear 107 is locked by the locking rack 108, so that the screw 106 can no longer rotate, and the contact floor 116 can stably lift the placement platform 101.

[0037] Next, the external power supply 302 is turned on, so that the external power supply 302 drives the lifting rope to unfold through the winding roller 303, causing the lifting rope to drive the signal receiving device 6 and the signal transmitting device 7 to gradually descend. Then, the signal transmitting device 7 is turned on to generate vibration in the coal seam, the signal receiving device 6 receives the groove wave, the controller 5 controls the signal receiving device 6 to receive the signal, and the signal generator 4 provides an electrical signal to the signal transmitting device 7.

[0038] The working principle of the signal generator 4, controller 5, signal receiving device 6 and signal transmitting device 7 has been proposed in a seismic source for underground channel wave exploration in coal mines with patent announcement number CN213876046U.

[0039] When a vibration is generated in a coal seam, seismic waves are produced. These waves spread outwards. Because the wave velocity in the coal seam is significantly lower than that in the surrounding rock of the roof and floor, the seismic waves generated by the seismic source are all reflected back into the coal seam when they reach the roof and floor interfaces. The reverberation and superposition of these waves form channel waves. The detection distance using the channel wave method is positively correlated with the coal seam thickness; the thinner the coal seam, the stronger the dispersion characteristics of the channel waves. The characteristics of channel waves are used to analyze the storage conditions of underground coal seams.

[0040] In summary, this controllable seismic source for underground coal mine channel wave detection, by setting up a first moving structure 1 and a second moving structure 2, utilizes the drive track 102 on the side of the placement platform 101 to drive the signal generator 4, controller 5, signal receiver 6, and signal transmitter 7 on the placement platform 101 to move. In addition, the built-in motor 105 included in the positioning device 103 drives the threaded ring 109 through the screw 106 to drive the sleeve plate 110 to drive the contact plate 116 below the follower plate 115 to gradually contact the ground. This causes the contact plate 116 to lift the placement platform 101 off the ground, making the fixing process of the signal generator 4, controller 5, signal receiver 6, and signal transmitter 7 time-saving and labor-saving, thereby improving the efficiency of underground detection.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A controllable seismic source for detecting channel waves in coal mines, comprising a first moving structure (1) and a second moving structure (2), characterized in that: Lifting devices (3) are fixedly installed at the top of the first moving structure (1) and the second moving structure (2). A signal generator (4) and a controller (5) are respectively provided at the top of the first moving structure (1) and the second moving structure (2). A signal receiving device (6) and a signal transmitting device (7) are respectively movably connected to the two lifting devices (3). The first moving structure (1) and the second moving structure (2) have the same structure. The first moving structure (1) includes a placement platform (101), and a drive track (102) is provided on the side of the placement platform (101). A positioning device (103) is provided inside the placement platform (101). The positioning device (103) includes a drive box (104). The inner wall of the drive box (104) is rotatably connected to a screw (106) via a built-in motor (105). A threaded ring (109) is threaded onto the surface of the screw (106). A sleeve plate (110) is movably sleeved on the outer side of the threaded ring (109) via a damping spring (111). An inclined block (113) is fixedly installed on the inner wall of the drive box (104), and a follower plate (115) is slidably connected thereto. The top end of the sleeve plate (110) overlaps with the slope of the inclined block (113), and the bottom end of the sleeve plate (110) overlaps with the top end of the follower plate (115). A contact plate (116) is fixedly installed on the bottom end of the follower plate (115), and the contact plate (116) is located below the drive box (104).

2. The controllable seismic source for underground channel wave detection in coal mines according to claim 1, characterized in that: The top of the socket plate (110) is provided with a pulley (112), which overlaps with the slope of the inclined block (113).

3. A controllable seismic source for underground channel wave detection in coal mines according to claim 1, characterized in that: A slider (114) is fixedly installed at the bottom end of the sleeve plate (110), and the slider (114) is slidably connected to the inner wall of the groove opened inside the follower plate (115).

4. A controllable seismic source for underground channel wave detection in coal mines according to claim 1, characterized in that: A locking gear (107) is fixedly sleeved on the surface of the screw (106), and a locking rack (108) is slidably connected to the inner wall of the drive box (104) through an electric push rod. The locking rack (108) is located behind the locking gear (107).

5. A controllable seismic source for underground channel wave detection in coal mines according to claim 1, characterized in that: The lifting device (3) includes a mounting frame (301), an external power supply (302) is provided on the outside of the mounting frame (301), and a take-up roller (303) is rotatably connected to the inside of the mounting frame (301). A lifting rope is wound around the surface of the take-up roller (303), and the lifting rope is wound around the top of the signal receiving device (6) and the signal transmitting device (7) respectively.

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