Coal mine rock burst monitoring and early warning device and using method thereof

Abstract

The invention relates to the technical field of coal mine ground pressure monitoring, and discloses a coal mine rock burst monitoring and early warning device which comprises a detection device, the detection device comprises an outer shell, an infrared detector is fixedly connected to the inner wall of the outer shell, and a rack is movably connected to the inner center of the outer shell; a first gear and a second gear are connected to the side face of the rack in an engaged mode, a first connecting block is fixedly connected to the side face of the first gear, a second connecting block is rotatably connected to the other end of the first connecting block, an infrared emitter is fixedly connected to the second connecting block, and a third connecting block is fixedly connected to the side face of the second gear. The side face of the third connecting block is rotationally connected with a second connecting plate, the other end of the second connecting plate is rotationally connected with a fifth connecting block, and the fifth connecting block is movably connected with a reflection lens. The coal mine ground pressure monitoring device is provided with the detection device, coal mine ground pressure monitoring can be conducted during use, meanwhile, the state of the air bag can be monitored, and use is more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mine ground pressure monitoring, and in particular to a coal mine rock burst monitoring and early warning device and a use method thereof. Background Art

[0002] Rock burst is a dynamic phenomenon characterized by sudden, sharp and violent destruction caused by the instantaneous release of elastic deformation energy when the mechanical equilibrium state of the coal and rock mass around the mining area is destroyed. Rock burst is a special manifestation of mine pressure. Its manifestation intensity characteristics are generally weak impact, strong impact, ejection, mine tremor, rock burst, coal cannon, shock wave, elastic vibration, etc., often accompanied by coal and rock mass ejection, loud noise and air waves; it occurs suddenly and violently, and the shock wave is huge, instantly destroying the tunnel, coal mining face and equipment, and injuring personnel. Therefore, it is very important to monitor and warn of rock burst. The main methods are: empirical analogy method, drill cuttings method and mine pressure monitoring method, among which the mine monitoring method is the most commonly used.

[0003] The current coal mine rock burst monitoring and early warning device is monitored by a strain gauge during use. The strain gauge is used to detect the pressure exerted on the airbag. It requires a strain gauge with higher sensitivity and is more expensive. At the same time, it cannot monitor the status of the airbag. Air bag leakage will cause inaccurate monitoring results. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a coal mine rock burst monitoring and early warning device and a use method thereof to solve the problems existing in the above-mentioned background technology.

[0005] The present invention provides the following technical solution: a coal mine rock burst monitoring and early warning device, comprising a detection device, the detection device comprising an external shell, an infrared detector is fixedly connected to the inner wall of the external shell, a rack is movably connected to the inner center of the external shell, a side surface of the rack is meshingly connected to a No. 1 gear and a No. 2 gear, a side surface of the No. 1 gear is fixedly connected to a No. 1 connecting block, the other end of the No. 1 connecting block is rotatably connected to a No. 2 connecting block, the side surface of the No. 2 connecting block is rotatably connected to the external shell, an infrared transmitter is fixedly connected to the No. 2 connecting block, a No. 3 connecting block is fixedly connected to the side surface of the No. 2 gear, a No. 2 connecting plate is rotatably connected to the side surface of the No. 3 connecting block, a No. 5 connecting block is rotatably connected to the other end of the No. 2 connecting plate, a No. 5 connecting block is rotatably connected to the other end of the No. 2 connecting plate, a No. 4 connecting block is fixedly connected to the inner wall of the external shell, the No. 5 connecting block is arranged on the No. 4 connecting block and movably connected to the No. 4 connecting block, and a reflective lens is movably connected to the No. 5 connecting block;

[0006] During detection, the rack moves toward the infrared detector under the action of pressure, driving the No. 1 and No. 2 gears meshing on the side of the rack to rotate, and the No. 1 gear drives the No. 1 connecting block and the No. 1 connecting plate to move, and the No. 1 connecting plate drives the No. 2 connecting block to rotate, so that the infrared emitter moves toward the rack. At the same time, the No. 2 gear drives the No. 3 connecting block, the No. 2 connecting plate and the No. 5 connecting block to move, so that the No. 5 connecting block moves downward on the No. 4 connecting block, driving the reflective lens to deflect toward the rack, and reflecting the infrared light emitted by the infrared emitter to the infrared detector. After detecting the infrared light, the infrared detector analyzes it to obtain the pressure change.

[0007] Furthermore, a sealing connector is fixedly connected to the side of the rack, a spring is fixedly connected to the side of the sealing connector, a fixing plate is fixedly connected to the side of the spring, the fixing plate is fixedly connected to the external shell, and the sealing connector is movably connected to the external shell.

[0008] Furthermore, a connecting tube is fixedly connected to the side of the detection device, an air supply pipe is fixedly connected to the side of the connecting tube, a detection airbag is fixedly connected to the other end of the air supply pipe, a connecting head is fixedly connected to the side of the detection airbag, and the connecting head is fixedly connected to the sealing connector.

[0009] Furthermore, a connecting rod is fixedly connected to the side of the detection device, a fixed airbag is fixedly connected to the connecting rod, the fixed airbag is arranged at the connection between the detection device and the connecting rod, and a No. 1 vent hole is opened on the external shell, and the No. 1 vent hole is communicated with the fixed airbag.

[0010] Furthermore, a second vent hole is provided on the external shell, and the second vent hole, the connecting pipe, the connecting head and the detection airbag are in communication.

[0011] Furthermore, a connecting sleeve is threadedly connected to the connecting rod, a rotating disk is fixedly connected to one side of the connecting sleeve, and a pressure sleeve is rotatably connected to the other side of the connecting sleeve.

[0012] Furthermore, the external shell includes an outer shell plate, a clip bag is fixedly connected to the outer surface of the outer shell plate, and a No. 1 connecting groove and a No. 2 connecting groove are provided on the outer shell plate. The No. 1 connecting groove is connected to the No. 1 vent hole, and the No. 2 connecting groove is connected to the No. 2 vent hole.

[0013] A method for using a coal mine rock burst monitoring and early warning device, the method comprising:

[0014] S1: When in use, extend the device to a predetermined position in the monitoring pit, rotate the turntable to drive the connecting sleeve and the pressure sleeve to move toward the detection device, squeeze the fixed airbag through the pressure sleeve, and discharge the air inside the fixed airbag through the No. 1 vent hole to the No. 1 connecting groove. The air pressure inside the No. 1 connecting groove increases, pushing the clip bag outward, so that the clip bag fits on the inner wall of the detection pit, and the device is fixed;

[0015] S2: When the clip bag expands, it will compress the No. 2 connection groove, so that the air inside the No. 2 connection groove enters the connection pipe through the No. 2 vent hole, and then enters the detection airbag through the connection pipe and the air supply pipe, so that the detection airbag is tightly attached to the inner wall of the detection pit. At this time, the detection airbag will also move a certain distance into the detection device when inflated, driving the rack to move inward, so that the infrared light emitted by the infrared emitter on the No. 2 connection block is deflected at a certain angle on the infrared detector. The infrared detector detects the value and sets this value as the initial value. The airtight state can be judged by the value. When the value decreases, the airbag inside the device may leak;

[0016] S3: When stress changes occur at the detection pit, the detection airbag will be pressed into the detection device, driving the rack to move. The rack drives the infrared emitter and the reflective lens to move. The maximum deflection angle of the infrared light detected on the side of the infrared detector facing the infrared emitter is set as the minimum warning threshold to eliminate the influence of vibrations during the operation of coal mining machines on the detection results. When infrared light is detected on the side of the infrared detector facing the reflective lens, an early warning is initiated.

[0017] S4: After use, the fixed airbag is inflated by rotating the turntable. The gas inside the No. 1 connecting groove returns to the inside of the fixed airbag through the No. 1 vent hole, and the gas inside the detection airbag also returns to the inside of the No. 2 connecting groove. The detection airbag and the clamping bag shrink toward the center and away from the inner wall of the detection pit. The connecting rod is pulled out to complete the device recovery.

[0018] Beneficial effects:

[0019] 1. The coal mine rock burst monitoring and early warning device and its use method: during detection, the rack moves toward the infrared detector under the pressure, driving the No. 1 gear and the No. 2 gear meshing on the side of the rack to rotate, so that the infrared transmitter moves toward the rack, and the reflective lens is deflected toward the rack. The infrared light emitted by the infrared transmitter is irradiated onto the infrared detector, which can improve the sensitivity of the device during detection, while having a low cost and being able to detect the status of the airbag. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a coal mine rock burst monitoring and early warning device proposed by the present invention;

[0021] Figure 2 A schematic diagram of the structure of a coal mine rock burst monitoring and early warning device proposed by the present invention;

[0022] Figure 3 A schematic diagram of the internal structure of a detection device of a coal mine rock burst monitoring and early warning device proposed by the present invention;

[0023] Figure 4 This is a schematic diagram of the shell plate structure of a coal mine rock burst monitoring and early warning device proposed by the present invention.

[0024] Wherein: 1. detection device; 101. external shell; 1011. outer shell plate; 1012. No. 1 connection slot; 1013. clip capsule; 1014. No. 2 connection slot; 102. No. 1 vent hole; 103. infrared detector; 104. No. 2 vent hole; 105. rack; 106. fixing plate; 107. spring; 108. sealing connector; 109. No. 1 gear; 110. No. 1 connection block; 111 11. Connecting plate No. 1; 112. Connecting block No. 2; 113. Infrared transmitter; 114. Gear No. 2; 115. Connecting block No. 3; 116. Connecting plate No. 2; 117. Connecting block No. 4; 118. Connecting block No. 5; 119. Reflective lens; 2. Connecting pipe; 3. Connecting head; 4. Detection airbag; 5. Fixed airbag; 6. Pressure sleeve; 7. Connecting sleeve; 8. Turntable; 9. Connecting rod; 10. Air pipe. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Embodiment 1

[0027] See also Figure 1-Figure 3A coal mine rock burst monitoring and early warning device comprises a detection device 1, the detection device 1 comprises an external shell 101, an infrared detector 103 is fixedly connected to the inner wall of the external shell 101, a rack 105 is movably connected to the inner center of the external shell 101, a side of the rack 105 is meshedly connected to a first gear 109 and a second gear 114, a side of the first gear 109 is fixedly connected to a first connecting block 110, the other end of the first connecting block 110 is rotatably connected to a second connecting block 112, and the side of the second connecting block 112 is connected to the external shell 101. Rotating connection, the second connecting block 112 is fixedly connected with an infrared transmitter 113, the side of the second gear 114 is fixedly connected with the third connecting block 115, the side of the third connecting block 115 is rotatably connected with the second connecting plate 116, the other end of the second connecting plate 116 is rotatably connected with the fifth connecting block 118, the inner wall of the external shell 101 is fixedly connected with the fourth connecting block 117, the fifth connecting block 118 is arranged on the fourth connecting block 117 and movably connected with the fourth connecting block 117, and the fifth connecting block 118 is movably connected with a reflective lens 119;

[0028] During detection, the rack 105 is subjected to pressure and moves toward the infrared detector 103, driving the No. 1 gear 109 and the No. 2 gear 114 meshed with the side of the rack 105 to rotate, the No. 1 gear 109 drives the No. 1 connecting block 110 and the No. 1 connecting plate 111 to move, and the No. 1 connecting plate 111 drives the No. 2 connecting block 112 to rotate, so that the infrared emitter 113 moves toward the rack 105. At the same time, the No. 2 gear 114 drives the No. 3 connecting block 115, the No. 2 connecting plate 116 and the No. 5 connecting block 118 to move, so that the No. 5 connecting block 118 moves downward on the No. 4 connecting block 117, driving the reflective lens 119 to deflect toward the rack 105, and reflecting the infrared light emitted by the infrared emitter 113 to the infrared detector 103. After detecting the infrared light, the infrared detector 103 analyzes it to obtain the pressure change.

[0029] Embodiment 2

[0030] See also Figure 1-Figure 4 A sealing connector 108 is fixedly connected to the side of the rack 105, a spring 107 is fixedly connected to the side of the sealing connector 108, a fixing plate 106 is fixedly connected to the side of the spring 107, the fixing plate 106 is fixedly connected to the external shell 101, and the sealing connector 108 is movably connected to the external shell 101.

[0031] A connecting tube 2 is fixedly connected to the side of the detection device 1, an air supply pipe 10 is fixedly connected to the side of the connecting tube 2, a detection airbag 4 is fixedly connected to the other end of the air supply pipe 10, a connecting head 3 is fixedly connected to the side of the detection airbag 4, and the connecting head 3 is fixedly connected to the sealing connector 108.

[0032] A connecting rod 9 is fixedly connected to the side of the detection device 1, and a fixed airbag 5 is fixedly connected to the connecting rod 9. The fixed airbag 5 is arranged at the connection between the detection device 1 and the connecting rod 9. A vent hole No. 102 is opened on the external shell 101, and the vent hole No. 102 is communicated with the fixed airbag 5.

[0033] A second vent hole 104 is provided on the outer shell 101 , and the second vent hole 104 , the connecting pipe 2 , the connecting head 3 and the detection airbag 4 are in communication.

[0034] A connecting sleeve 7 is threadedly connected to the connecting rod 9 , a rotating disk 8 is fixedly connected to one side of the connecting sleeve 7 , and a pressure sleeve 6 is rotatably connected to the other side of the connecting sleeve 7 .

[0035] The outer shell 101 includes an outer shell plate 1011, on the outer surface of which a clip bag 1013 is fixedly connected. The outer shell plate 1011 is provided with a first connecting groove 1012 and a second connecting groove 1014. The first connecting groove 1012 is communicated with the first vent hole 102, and the second connecting groove 1014 is communicated with the second vent hole 104.

[0036] A method for using a coal mine rock burst monitoring and early warning device, the method comprising:

[0037] S1: When in use, the device is extended into a predetermined position in the monitoring pit, and the rotating turntable 8 drives the connecting sleeve 7 and the pressure sleeve 6 to move toward the detection device 1. The fixed airbag 5 is squeezed by the pressure sleeve 6, and the air inside the fixed airbag 5 is discharged into the first connecting groove 1012 through the first vent hole 102. The air pressure inside the first connecting groove 1012 increases, and the clip capsule 1013 is pushed outward, so that the clip capsule 1013 fits on the inner wall of the detection pit, and the device is fixed;

[0038] S2: When the clip bag 1013 expands, the No. 2 connection groove 1014 will be compressed, so that the air inside the No. 2 connection groove 1014 enters the connection pipe 2 through the No. 2 vent hole 104, and then enters the detection airbag 4 through the connection pipe 2 and the air pipe 10, so that the detection airbag 4 is tightly attached to the inner wall of the detection pit. At this time, the detection airbag 4 will also move a certain distance into the detection device 1 when inflated, driving the rack 105 to move inward, so that the infrared light emitted by the infrared emitter 113 on the No. 2 connection block 112 is deflected at a certain angle on the infrared detector 103. The infrared detector 103 detects the value and sets this value as the initial value. The airtight state can be judged by the value. When the value decreases, the airbag inside the device may leak;

[0039] S3: When stress changes occur at the detection pit, the detection airbag 4 will be pressed into the detection device 1, and the detection airbag 4 will drive the rack 105 to move. The rack 105 causes the infrared emitter 113 and the reflective lens 119 to move through transmission. The maximum deflection angle of the infrared light detected on the side of the infrared detector 103 facing the infrared emitter 113 is set as the minimum warning threshold, which is used to eliminate the influence of vibration during the operation of the coal mining machine on the detection results. When infrared light is detected on the side of the infrared detector 103 facing the reflective lens 119, an early warning is initiated.

[0040] S4: After use, the fixed airbag 5 is inflated by rotating the turntable 8, and the internal gas of the No. 1 connecting groove 1012 returns to the interior of the fixed airbag 5 through the No. 1 vent hole 102, and the internal gas of the detection airbag 4 also returns to the interior of the No. 2 connecting groove 1014, and the detection airbag 4 and the clamping bag 1013 shrink toward the center and away from the inner wall of the detection pit, and the connecting rod 9 is pulled out to complete the device recovery.

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

Claims

1. A coal mine rock burst monitoring and early warning device, comprising a detection device (1), characterized in that: The detection device (1) comprises an external shell (101), an infrared detector (103) is fixedly connected to the inner wall of the external shell (101), a rack (105) is movably connected to the inner center of the external shell (101), a side of the rack (105) is meshingly connected to a first gear (109) and a second gear (114), a side of the first gear (109) is fixedly connected to a first connecting block (110), the other end of the first connecting block (110) is rotatably connected to a second connecting block (112), the side of the second connecting block (112) is rotatably connected to the external shell (101), and the second connecting block (112) is rotatably connected to the external shell (101). (112) is fixedly connected with an infrared transmitter (113), a side surface of the second gear (114) is fixedly connected with a third connecting block (115), a side surface of the third connecting block (115) is rotatably connected with a second connecting plate (116), the other end of the second connecting plate (116) is rotatably connected with a fifth connecting block (118), a fourth connecting block (117) is fixedly connected with the inner wall of the external shell (101), the fifth connecting block (118) is arranged on the fourth connecting block (117) and is movably connected with the fourth connecting block (117), and a reflective lens (119) is movably connected with the fifth connecting block (118); During detection, the rack (105) is subjected to pressure and moves toward the infrared detector (103), driving the first gear (109) and the second gear (114) meshed and connected to the side of the rack (105) to rotate, the first gear (109) drives the first connecting block (110) and the first connecting plate (111) to move, and the first connecting plate (111) drives the second connecting block (112) to rotate, so that the infrared emitter (113) moves toward the rack (105). The second gear (114) drives the third connecting block (115), the second connecting plate (116) and the fifth connecting block (118) to move, so that the fifth connecting block (118) moves downward on the fourth connecting block (117), drives the reflective lens (119) to deflect toward the rack (105), and reflects the infrared light emitted by the infrared transmitter (113) to the infrared detector (103). After the infrared detector (103) detects the infrared light, it analyzes it and obtains the pressure change situation.

2. A coal mine rock burst monitoring and early warning device according to claim 1, characterized in that: A sealing connector (108) is fixedly connected to the side of the rack (105), a spring (107) is fixedly connected to the side of the sealing connector (108), a fixing plate (106) is fixedly connected to the side of the spring (107), the fixing plate (106) is fixedly connected to the external shell (101), and the sealing connector (108) is movably connected to the external shell (101).

3. A coal mine rock burst monitoring and early warning device according to claim 2, characterized in that: A connecting tube (2) is fixedly connected to the side of the detection device (1), an air supply pipe (10) is fixedly connected to the side of the connecting tube (2), a detection airbag (4) is fixedly connected to the other end of the air supply pipe (10), a connector (3) is fixedly connected to the side of the detection airbag (4), and the connector (3) is fixedly connected to a sealing connector (108).

4. A coal mine rock burst monitoring and early warning device according to claim 3, characterized in that: A connecting rod (9) is fixedly connected to the side of the detection device (1), a fixed airbag (5) is fixedly connected to the connecting rod (9), the fixed airbag (5) is arranged at the connection between the detection device (1) and the connecting rod (9), and a first vent hole (102) is provided on the external shell (101), and the first vent hole (102) is in communication with the fixed airbag (5).

5. A coal mine rock burst monitoring and early warning device according to claim 4, characterized in that: The outer shell (101) is provided with a second vent hole (104), and the second vent hole (104), the connecting pipe (2), the connecting head (3) and the detection airbag (4) are in communication with each other.

6. A coal mine rock burst monitoring and early warning device according to claim 5, characterized in that: A connecting sleeve (7) is threadedly connected to the connecting rod (9), a rotating disk (8) is fixedly connected to one side of the connecting sleeve (7), and a pressure sleeve (6) is rotatably connected to the other side of the connecting sleeve (7).

7. A coal mine rock burst monitoring and early warning device according to claim 6, characterized in that: The outer shell (101) comprises an outer shell plate (1011), a clamping bag (1013) is fixedly connected to the outer surface of the outer shell plate (1011), and a first connecting groove (1012) and a second connecting groove (1014) are provided on the outer shell plate (1011), the first connecting groove (1012) is communicated with the first vent hole (102), and the second connecting groove (1014) is communicated with the second vent hole (104).

8. A method for using a coal mine rock burst monitoring and early warning device, the coal mine rock burst monitoring and early warning device according to claim 7, characterized in that: The method includes: S1: When in use, the device is inserted into a predetermined position in the monitoring pit, and the rotating disk (8) drives the connecting sleeve (7) and the pressure sleeve (6) to move toward the detection device (1). The fixed air bag (5) is squeezed by the pressure sleeve (6), and the air inside the fixed air bag (5) is discharged into the first connecting groove (1012) through the first vent hole (102). The air pressure inside the first connecting groove (1012) increases, and the clamping bag (1013) is pushed outward, so that the clamping bag (1013) is attached to the inner wall of the detection pit, and the device is fixed; S2: When the clamp bag (1013) expands, the second connecting groove (1014) is compressed, so that the air inside the second connecting groove (1014) enters the connecting pipe (2) through the second vent hole (104), and then enters the detection airbag (4) through the connecting pipe (2) and the air supply pipe (10), so that the detection airbag (4) is tightly attached to the inner wall of the detection pit. At this time, the detection airbag (4) will also move a certain distance into the detection device (1) when inflated, driving the rack (105) to move inward, so that the infrared light emitted by the infrared emitter (113) on the second connecting block (112) is deflected at a certain angle on the infrared detector (103). The infrared detector (103) detects the value and sets the value as the initial value. The airtight state can be judged by the value. When the value decreases, the airbag inside the device may leak. S3: When stress changes occur at the detection pit, the detection airbag (4) is pressed toward the inside of the detection device (1), and the detection airbag (4) drives the rack (105) to move. The rack (105) causes the infrared emitter (113) and the reflective lens (119) to move through transmission. The maximum deflection angle of infrared light detected on the side of the infrared detector (103) facing the infrared emitter (113) is set as the minimum warning threshold value, which is used to eliminate the influence of vibration during the operation of the coal mining machine on the detection result. When infrared light is detected on the side of the infrared detector (103) facing the reflective lens (119), a warning is started. S4: After use, the fixed airbag (5) is inflated by rotating the turntable (8), and the gas inside the No. 1 connecting groove (1012) returns to the interior of the fixed airbag (5) through the No. 1 vent hole (102), and the gas inside the detection airbag (4) also returns to the interior of the No. 2 connecting groove (1014), and the detection airbag (4) is The clamping capsule (1013) is contracted toward the center and away from the inner wall of the detection pit, and the connecting rod (9) is pulled outward. Complete device recovery.

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