Seismograph external explosion-proof protection structure suitable for coal mine monitoring

Abstract

The invention discloses a seismograph external anti-explosion protection structure suitable for coal mine monitoring, and belongs to the technical field of coal mine monitoring, the seismograph external anti-explosion protection structure comprises a supporting seat, a protective cover is fixedly mounted on the upper surface of the supporting seat, a notch is formed in the upper surface of the protective cover, and a movable door is slidably mounted on the inner wall of the notch; a seismograph is arranged on the upper surface of the supporting seat, an induction assembly is arranged on the inner wall of the supporting seat, a protection assembly is arranged on the outer surface of the protection cover, and a positioning assembly is arranged on the upper surface of the supporting seat; according to the device, the sensing assembly is arranged, the ground drilling column is inserted into a hole in the ground surface, then a sensor makes contact with the inner wall of the hole, on one hand, the ground drilling column is inserted into the ground, certain stability can be provided for the supporting base, and it is guaranteed that the supporting base cannot move or shake during vibration; on the other hand, the sensor makes contact with the ground, the monitoring speed is higher during monitoring, and meanwhile the monitoring result is more accurate.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine monitoring, and in particular relates to an external explosion-proof protection structure of a seismograph suitable for coal mine monitoring. Background Art

[0002] A seismograph is an instrument that monitors the occurrence of earthquakes and records earthquake-related parameters. Seismographs are divided into three categories: short-period, long-period, and ultra-long or wide-band. Seismograph processing can monitor earthquakes and is also widely used in coal mines. Seismographs can be used to monitor the vibration of coal mines to avoid mine collapse and improve safety.

[0003] However, since the seismograph is a precision instrument, it needs to be protected when in use. Currently, most of the seismographs are protected by installing them in plastic boxes. This protection method can only protect some sand and gravel. When the seismograph is hit, it cannot provide protection, resulting in damage to the seismograph or a decrease in monitoring sensitivity. Therefore, an external explosion-proof protection structure for a seismograph suitable for coal mine monitoring is provided. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned problem and to propose an external explosion-proof protection structure of a seismograph suitable for coal mine monitoring.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an external explosion-proof protection structure of a seismograph suitable for coal mine monitoring, comprising a support seat, a protective cover is fixedly installed on the upper surface of the support seat, a notch is arranged on the upper surface of the protective cover, a movable door is slidably installed on the inner wall of the notch, a seismograph is arranged on the upper surface of the support seat, a sensing component is arranged on the inner wall of the support seat, a protective component is arranged on the outer surface of the protective cover, and a positioning component is arranged on the upper surface of the support seat;

[0006] The induction component includes a driving motor and a drilling column. A connecting spring is fixedly installed on the inner wall of the top surface of the drilling column. A sliding plate is fixedly installed on one end of the connecting spring. The outer surface of the sliding plate is slidably connected to the inner wall of the drilling column.

[0007] As a further description of the above technical solution:

[0008] A push rod is fixedly installed on the lower surface of the sliding plate, one end of the push rod extends to the outside of the lower surface of the drilling column, a conical block is fixedly installed on the outer surface of the push rod, a limit spring is fixedly installed on the inner side wall of the drilling column, and one end of the limit spring is fixedly installed with a support plate.

[0009] As a further description of the above technical solution:

[0010] A vibration-sensitive sensor is fixedly installed on the side wall of the support plate, one end of the vibration-sensitive sensor passes through the inner wall of the limit spring, and one end of the vibration-sensitive sensor extends to the outside of the drilling column. A mounting plate is fixedly installed on the other side wall of the support plate, and a pulley is rotatably installed on the side wall of the mounting plate through a rotating shaft, and the outer surface of the pulley is slidably connected to the outer surface of the conical block.

[0011] As a further description of the above technical solution:

[0012] The upper surface of the driving motor is fixedly connected to the inner wall of the top surface of the support seat, the output end of the driving motor is fixedly installed with a threaded column, one end of the threaded column is rotatably connected to the inner wall of the bottom surface of the support seat, the outer surface of the threaded column is threadedly installed with a threaded plate, both ends of the threaded plate are fixedly installed with fixing plates, the lower surface of the fixing plate is fixedly connected to the upper surface of the drilling column, the output end of the seismograph is fixedly installed with a connecting wire, one end of the connecting wire is fixedly connected to the input end of the seismic sensitive sensor.

[0013] As a further description of the above technical solution:

[0014] The protection component includes an anti-collision plate, a spring plate is fixedly installed on the side wall of the anti-collision plate, one end of the spring plate is fixedly connected to the side wall of the protective cover, a main airbag is fixedly installed on the side wall of the anti-collision plate, and the side wall of the main airbag is fixedly connected to the side wall of the protective cover.

[0015] As a further description of the above technical solution:

[0016] A connecting pipe is installed on the side wall of the main airbag, one end of which extends to the interior of the protective cover. A first protective airbag is movably installed on the inner wall of the shell cavity of the protective cover. A groove is provided on the inner wall of the protective cover. The side wall of the first protective airbag is connected to one end of the connecting pipe.

[0017] As a further description of the above technical solution:

[0018] A ventilation pipe is installed on the side wall of the first protective airbag, a second protective airbag is installed on one end of the ventilation pipe, and the upper surface of the second protective airbag is fixedly connected to the inner wall of the top surface of the protective cover.

[0019] As a further description of the above technical solution:

[0020] The positioning assembly includes a guide rail and a positioning plate. The lower surface of the guide rail is fixedly connected to the upper surface of the support seat. A telescopic spring is fixedly installed on the inner wall of the bottom surface of the guide rail. A one-way rack is fixedly installed on one end of the telescopic spring. Both ends of the one-way rack are slidably connected to the inner wall of the guide rail. A pressure rod is fixedly installed on the upper surface of the one-way rack, and one end of the pressure rod extends outside the upper surface of the guide rail.

[0021] As a further description of the above technical solution:

[0022] A slide groove is provided on the inner side wall of the guide rail, and limiting sliders are fixedly installed on both side walls of the positioning plate. The outer surface of the limiting slider is slidably connected to the inner wall of the slide groove, and a fixing rod is fixedly installed on the outer surface of the positioning plate, and teeth are fixedly installed on the lower surface of the fixing rod.

[0023] As a further description of the above technical solution:

[0024] One end of the positioning plate extends to the outside of the upper surface of the guide rail, a positioning spring is fixedly installed on the inner wall of the positioning plate, a positioning pin is fixedly installed on one end of the positioning spring, and one end of the positioning pin extends to the outside of the positioning plate.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0026] 1. In the present invention, a sensing component is provided to align the hole on the lower surface of the support seat with the hole surface, and the threaded column is driven to rotate by a driving motor. As the threaded column rotates, the threaded plate drives the fixing plate to move toward the lower surface of the support seat through the threads on the outer surface, thereby driving the drilling column to drill into the hole on the surface of the ground. When the top rod contacts the inner wall of the bottom surface of the hole, as the drilling column continues to descend, the top rod drives the conical block to move upward in the drilling column. As the conical block moves upward, the support plate drives the vibration-sensitive sensor to move out of the drilling column under the action of the pulley, and then contacts the inner wall of the hole. When the coal mine vibrates, the vibration-sensitive sensor transmits information to the seismograph through the connecting line. The drilling column is inserted into the hole on the surface of the ground, and then the sensor contacts the inner wall of the hole. On the one hand, the insertion of the drilling column into the ground can provide a certain stability to the support seat, ensuring that the support seat will not move or shake during vibration. On the other hand, the contact between the sensor and the underground makes the monitoring speed faster during monitoring, and the monitoring result is more accurate.

[0027] 2. In the present invention, by providing a protective component, when the protective cover is hit, it will first hit the anti-collision plate, and the anti-collision plate will move toward the side wall of the protective cover. When the anti-collision plate moves under the action of the spring plate, it will squeeze the main airbag. At this time, the gas inside the squeezed main airbag flows into the first protective airbag through the connecting tube. After the first protective airbag expands, it bulges out from the slot to protect the left and right sides of the seismograph. When the first protective airbag is full, gas will flow into the second protective airbag through the ventilation tube, so that the second protective airbag will expand, and then protect the upper surface of the seismograph. When the protective cover provides protection for the seismograph when it is hit, the airbag wraps the seismograph to avoid collision between the seismograph and the protective cover, thereby further improving the protectiveness of the protective cover and reducing the damage rate of the seismograph.

[0028] 3. In the present invention, by providing a positioning assembly, the movable door is opened, and the movable door will move toward the inner wall of the shell cavity at the top of the protective cover, and then the seismograph is placed on the upper surface of the support seat, and then the positioning plate is moved to both sides of the seismograph. When the positioning plate moves to an appropriate position, the one-way rack will move upward under the action of the telescopic spring, and then the positioning plate will be fixed by the fixing rod under the action of the teeth. After the positioning plate contacts the seismograph, the positioning pin will shrink according to the outer surface shape of the seismograph, and the positioning pin that is not squeezed will extend to the outside of the positioning plate under the action of the positioning spring, thereby fixing the seismograph on the upper surface of the support seat. When the seismograph needs to be disassembled, the one-way rack is pressed toward the lower surface of the guide rail by the pressure rod, so that the teeth will be separated from the one-way rack, and then the positioning plate is pulled toward both sides of the support seat, so that the positioning plate loses the fixation of the seismograph, and then the seismograph is removed, which is convenient for installation and disassembly of the seismograph. At the same time, it is fixed according to the shape of the seismograph, so as to reduce the shaking distance and shaking frequency of the seismograph in the protective cover during collision, and further improve the protection of the seismograph. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The figure is a three-dimensional structural schematic diagram of an external explosion-proof protection structure of a seismograph suitable for coal mine monitoring.

[0030] Figure 2 The figure is a schematic diagram of the internal structure of an external explosion-proof protection structure of a seismograph suitable for coal mine monitoring.

[0031] Figure 3 This is a schematic diagram of the enlarged structure at point A in the external explosion-proof protection structure of a seismograph suitable for coal mine monitoring.

[0032] Figure 4 This is a schematic diagram of the enlarged structure of point B in the external explosion-proof protection structure of a seismograph suitable for coal mine monitoring.

[0033] Figure 5The diagram is a partial three-dimensional structural diagram of a positioning component in an external explosion-proof protection structure of a seismograph suitable for coal mine monitoring.

[0034] Figure 6 The diagram is a partial three-dimensional structural diagram of a sensing component in an external explosion-proof protection structure of a seismograph suitable for coal mine monitoring.

[0035] Legend:

[0036] 1. Support seat; 2. Protective cover; 3. Movable door; 4. Protective component; 41. Anti-collision plate; 42. Spring plate; 43. Main airbag; 44. First protective airbag; 45. Second protective airbag; 5. Seismograph; 6. Positioning component; 61. Guide rail; 62. Telescopic spring; 63. One-way rack; 64. Positioning plate; 65. Positioning spring; 66. Positioning pin; 67. Fixing rod; 68. Teeth; 69. Limiting slider; 7. Induction component; 71. Drive motor; 72. Threaded column; 73. Fixing plate; 74. Drilling column; 75. Connecting spring; 76. Sliding plate; 77. Push rod; 78. Conical block; 79. Limiting spring; 710. Support plate; 711. Vibration sensitive sensor; 712. Mounting plate; 713. Pulley; 714. Threaded plate; 8. Connecting wire. DETAILED DESCRIPTION

[0037] 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.

[0038] See also Figure 1-6 The present invention provides a technical solution: an external explosion-proof protection structure of a seismograph suitable for coal mine monitoring, comprising a support seat 1, a protective cover 2 is fixedly installed on the upper surface of the support seat 1, a notch is arranged on the upper surface of the protective cover 2, a movable door 3 is slidably installed on the inner wall of the notch, a seismograph 5 is arranged on the upper surface of the support seat 1, a sensing component 7 is arranged on the inner wall of the support seat 1, a protective component 4 is arranged on the outer surface of the protective cover 2, and a positioning component 6 is arranged on the upper surface of the support seat 1;

[0039] The sensing assembly 7 includes a driving motor 71 and a drilling column 74, a connecting spring 75 is fixedly installed on the inner wall of the top surface of the drilling column 74, one end of the connecting spring 75 is fixedly installed with a sliding plate 76, the outer surface of the sliding plate 76 is slidably connected to the inner wall of the drilling column 74, a top rod 77 is fixedly installed on the lower surface of the sliding plate 76, one end of the top rod 77 extends to the outside of the lower surface of the drilling column 74, a conical block 78 is fixedly installed on the outer surface of the top rod 77, a limiting spring 79 is fixedly installed on the inner side wall of the drilling column 74, one end of the limiting spring 79 is fixedly installed with a supporting plate 710, a vibration-sensitive sensor 711 is fixedly installed on the side wall of the supporting plate 710, one end of the vibration-sensitive sensor 711 passes through the inner wall of the limiting spring 79, and one end of the vibration-sensitive sensor 711 extends to the drilling column 74. On the outside of the column 74, a mounting plate 712 is fixedly installed on the other side wall of the support plate 710, and a pulley 713 is rotatably installed on the side wall of the mounting plate 712 through a rotating shaft, and the outer surface of the pulley 713 is slidingly connected to the outer surface of the conical block 78, and the upper surface of the driving motor 71 is fixedly connected to the inner wall of the top surface of the supporting seat 1, and the output end of the driving motor 71 is fixedly installed with a threaded column 72, and one end of the threaded column 72 is rotatably connected to the inner wall of the bottom surface of the supporting seat 1, and a threaded plate 714 is threadedly installed on the outer surface of the threaded column 72, and both ends of the threaded plate 714 are fixedly installed with a fixing plate 73, and the lower surface of the fixing plate 73 is fixedly connected to the upper surface of the drilling column 74, and the output end of the seismograph 5 is fixedly installed with a connecting line 8, and one end of the connecting line 8 is fixedly connected to the input end of the seismic sensitive sensor 711.

[0040] The specific implementation method is as follows: four holes are drilled on the ground surface, and then the holes on the lower surface of the support seat 1 are aligned with the hole surface, and the threaded column 72 is driven to rotate by the driving motor 71. As the threaded column 72 rotates, the threaded plate 714 drives the fixing plate 73 to move toward the lower surface of the support seat 1 through the threads on the outer surface, thereby driving the drilling column 74 to drill into the hole on the ground surface. When the top rod 77 contacts the inner wall of the bottom surface of the hole, as the drilling column 74 continues to descend, the top rod 77 drives the conical block 78 to move upward in the drilling column 74. As the conical block 78 moves upward, the support plate 710 drives the vibration-sensitive sensor 711 to move out of the drilling column 74 under the action of the pulley 713, and then contacts the inner wall of the hole. When the coal mine vibrates, the vibration-sensitive sensor 711 transmits information to the seismograph 5 through the connecting line 8.

[0041] The protective component 4 includes an anti-collision plate 41, a spring plate 42 is fixedly installed on the side wall of the anti-collision plate 41, one end of the spring plate 42 is fixedly connected to the side wall of the protective cover 2, a main airbag 43 is fixedly installed on the side wall of the anti-collision plate 41, the side wall of the main airbag 43 is fixedly connected to the side wall of the protective cover 2, a connecting pipe is installed and connected on the side wall of the main airbag 43, one end of the connecting pipe extends to the interior of the protective cover 2, a first protective airbag 44 is movably installed on the inner wall of the shell cavity of the protective cover 2, a groove is provided on the inner side wall of the protective cover 2, the side wall of the first protective airbag 44 is connected to one end of the connecting pipe, a ventilation pipe is installed and connected on the side wall of the first protective airbag 44, one end of the ventilation pipe is installed with a second protective airbag 45, and the upper surface of the second protective airbag 45 is fixedly connected to the inner wall of the top surface of the protective cover 2.

[0042] The specific implementation example is as follows: when the protective cover 2 is hit, it will first hit the anti-collision plate 41. At this time, the anti-collision plate 41 will move toward the side wall of the protective cover 2. When the anti-collision plate 41 moves under the action of the spring plate 42, the main airbag 43 will be squeezed. At this time, the gas inside the squeezed main airbag 43 flows into the first protective airbag 44 through the connecting pipe. After the first protective airbag 44 expands, it bulges out from the groove to protect the left and right sides of the seismograph 5. When the first protective airbag 44 is full, gas will flow into the second protective airbag 45 through the ventilation pipe, thereby causing the second protective airbag 45 to expand, and then protect the upper surface of the seismograph 5.

[0043] The positioning assembly 6 includes a guide rail 61 and a positioning plate 64. The lower surface of the guide rail 61 is fixedly connected to the upper surface of the support seat 1. A telescopic spring 62 is fixedly installed on the inner wall of the bottom surface of the guide rail 61. One end of the telescopic spring 62 is fixedly installed with a one-way rack 63. Both ends of the one-way rack 63 are slidably connected to the inner wall of the guide rail 61. A pressure rod is fixedly installed on the upper surface of the one-way rack 63. One end of the pressure rod extends to the outside of the upper surface of the guide rail 61. A sliding groove is provided on the inner side wall of the guide rail 61. The positioning plate 6 4 are fixedly mounted on both side walls thereof, the outer surface of the limit slider 69 is slidably connected to the inner wall of the slide groove, the outer surface of the positioning plate 64 is fixedly mounted with a fixing rod 67, the lower surface of the fixing rod 67 is fixedly mounted with a tooth 68, one end of the positioning plate 64 extends to the outside of the upper surface of the guide rail 61, a positioning spring 65 is fixedly mounted on the inner side wall of the positioning plate 64, one end of the positioning spring 65 is fixedly mounted with a positioning pin 66, one end of the positioning pin 66 extends to the outside of the positioning plate 64.

[0044] The specific implementation example is as follows: the movable door 3 is opened, at which time the movable door 3 will move toward the inner wall of the shell cavity at the top of the protective cover 2, and then the seismograph 5 is placed on the upper surface of the support seat 1, and then the positioning plate 64 is moved to both sides of the seismograph 5. When the positioning plate 64 moves to the appropriate position, the one-way rack 63 will move upward under the action of the telescopic spring 62, and then the positioning plate 64 will be fixed by the fixing rod 67 under the action of the teeth 68. After the positioning plate 64 contacts the seismograph 5, the positioning pin 66 will shrink according to the outer surface shape of the seismograph 5, and the positioning pin 66 that is not squeezed will extend to the outside of the positioning plate 64 under the action of the positioning spring 65, thereby fixing the seismograph 5 on the upper surface of the support seat 1. When the seismograph 5 needs to be disassembled, the one-way rack 63 is pressed toward the lower surface of the guide rail 61 by the pressure rod, so that the teeth 68 will disengage the one-way rack 63, and then the positioning plate 64 is pulled toward both sides of the support seat 1, so that the positioning plate 64 loses the fixation on the seismograph 5, and then the seismograph 5 is disassembled.

[0045] Working principle: open the movable door 3, at this time the movable door 3 will move to the inner wall of the shell cavity at the top of the protective cover 2, then put the seismograph 5 on the upper surface of the support seat 1, and then move the positioning plate 64 to both sides of the seismograph 5. When the positioning plate 64 moves to the appropriate position, the one-way rack 63 will move upward under the action of the telescopic spring 62, and then fix the positioning plate 64 through the fixing rod 67 under the action of the teeth 68. After the positioning plate 64 comes into contact with the seismograph 5, the positioning pin 66 will shrink according to the outer surface shape of the seismograph 5, and the positioning pin 66 that is not squeezed will shrink in the positioning spring 6 5, extends to the outside of the positioning plate 64, thereby fixing the seismograph 5 on the upper surface of the support seat 1. When the seismograph 5 needs to be disassembled, the one-way rack 63 is pressed toward the lower surface of the guide rail 61 by the pressure rod, so that the teeth 68 will be separated from the one-way rack 63, and then the positioning plate 64 is pulled toward both sides of the support seat 1, so that the positioning plate 64 loses the fixation of the seismograph 5, and then the seismograph 5 is removed, four holes are drilled in the ground, and then the holes on the lower surface of the support seat 1 are aligned with the hole surface, and the threaded column 72 is driven by the driving motor 71 to rotate, and as the threaded column 72 rotates, it passes through the outer surface The thread of the threaded plate 714 drives the fixing plate 73 to move toward the lower surface of the support seat 1, thereby driving the drilling column 74 to drill into the hole on the surface. When the top rod 77 contacts the inner wall of the bottom surface of the hole, as the drilling column 74 continues to descend, the top rod 77 will drive the conical block 78 to move upward in the drilling column 74. As the conical block 78 moves upward, the support plate 710 drives the vibration-sensitive sensor 711 to move out of the drilling column 74 under the action of the pulley 713, and then contacts the inner wall of the hole. When the coal mine vibrates, the vibration-sensitive sensor 711 will transmit information to the seismograph 5 through the connecting line 8. When the protective cover 2 is affected When colliding, it will first hit the anti-collision plate 41, and then the anti-collision plate 41 will move toward the side wall of the protective cover 2. When the anti-collision plate 41 moves under the action of the spring plate 42, it will squeeze the main airbag 43. At this time, the gas inside the squeezed main airbag 43 flows into the first protective airbag 44 through the connecting pipe. After the first protective airbag 44 expands, it bulges out from the groove to protect the left and right sides of the seismograph 5. When the first protective airbag 44 is full, gas will flow into the second protective airbag 45 through the ventilation pipe, thereby causing the second protective airbag 45 to expand, and then protect the upper surface of the seismograph 5.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An external explosion-proof protection structure of a seismograph suitable for coal mine monitoring, comprising a support base (1), a protective cover (2) fixedly mounted on the upper surface of the support base (1), a notch arranged on the upper surface of the protective cover (2), a movable door (3) slidably mounted on the inner wall of the notch, a seismograph (5) arranged on the upper surface of the support base (1), characterized in that: A sensing component (7) is arranged on the inner wall of the support base (1), a protective component (4) is arranged on the outer surface of the protective cover (2), and a positioning component (6) is arranged on the upper surface of the support base (1); The induction component (7) comprises a driving motor (71) and a drilling column (74); a connecting spring (75) is fixedly mounted on the inner wall of the top surface of the drilling column (74); a sliding plate (76) is fixedly mounted on one end of the connecting spring (75); and the outer surface of the sliding plate (76) is slidably connected to the inner wall of the drilling column (74).

2. The external explosion-proof protection structure of a seismograph suitable for coal mine monitoring according to claim 1 is characterized in that: A push rod (77) is fixedly mounted on the lower surface of the sliding plate (76), one end of the push rod (77) extends to the outside of the lower surface of the drilling column (74), a conical block (78) is fixedly mounted on the outer surface of the push rod (77), a limit spring (79) is fixedly mounted on the inner side wall of the drilling column (74), and a support plate (710) is fixedly mounted on one end of the limit spring (79).

3. The external explosion-proof protection structure of a seismograph suitable for coal mine monitoring according to claim 2 is characterized in that: A vibration-sensitive sensor (711) is fixedly mounted on the side wall of the support plate (710), one end of the vibration-sensitive sensor (711) penetrates the inner wall of the limit spring (79), and one end of the vibration-sensitive sensor (711) extends to the outside of the ground drilling column (74). A mounting plate (712) is fixedly mounted on the other side wall of the support plate (710), a pulley (713) is rotatably mounted on the side wall of the mounting plate (712) via a rotating shaft, and the outer surface of the pulley (713) is slidably connected to the outer surface of the conical block (78).

4. The external explosion-proof protection structure of a seismograph suitable for coal mine monitoring according to claim 3 is characterized in that: The upper surface of the driving motor (71) is fixedly connected to the inner wall of the top surface of the support seat (1); a threaded column (72) is fixedly installed on the output end of the driving motor (71); one end of the threaded column (72) is rotatably connected to the inner wall of the bottom surface of the support seat (1); a threaded plate (714) is threadedly installed on the outer surface of the threaded column (72); both ends of the threaded plate (714) are fixedly installed with a fixing plate (73); the lower surface of the fixing plate (73) is fixedly connected to the upper surface of the drilling column (74); a connecting line (8) is fixedly installed on the output end of the seismograph (5); one end of the connecting line (8) is fixedly connected to the input end of the seismic sensitive sensor (711).

5. The external explosion-proof protection structure of a seismograph suitable for coal mine monitoring according to claim 4, characterized in that: The protection component (4) comprises an anti-collision plate (41), a spring plate (42) is fixedly mounted on the side wall of the anti-collision plate (41), one end of the spring plate (42) is fixedly connected to the side wall of the protection cover (2), a main air bag (43) is fixedly mounted on the side wall of the anti-collision plate (41), and the side wall of the main air bag (43) is fixedly connected to the side wall of the protection cover (2).

6. The external explosion-proof protection structure of a seismograph suitable for coal mine monitoring according to claim 5, characterized in that: A connecting pipe is installed on the side wall of the main airbag (43), one end of which extends into the interior of the protective cover (2). A first protective airbag (44) is movably installed on the inner wall of the shell cavity of the protective cover (2). A groove is provided on the inner side wall of the protective cover (2), and the side wall of the first protective airbag (44) is connected to one end of the connecting pipe.

7. The external explosion-proof protection structure of a seismograph suitable for coal mine monitoring according to claim 6, characterized in that: A ventilation pipe is installed in communication with the side wall of the first protective airbag (44), a second protective airbag (45) is installed at one end of the ventilation pipe, and the upper surface of the second protective airbag (45) is fixedly connected to the inner wall of the top surface of the protective cover (2).

8. The external explosion-proof protection structure of a seismograph suitable for coal mine monitoring according to claim 7, characterized in that: The positioning assembly (6) comprises a guide rail (61) and a positioning plate (64); the lower surface of the guide rail (61) is fixedly connected to the upper surface of the support seat (1); a telescopic spring (62) is fixedly installed on the inner wall of the bottom surface of the guide rail (61); one end of the telescopic spring (62) is fixedly installed with a one-way rack (63); both ends of the one-way rack (63) are slidably connected to the inner wall of the guide rail (61); a pressure rod is fixedly installed on the upper surface of the one-way rack (63); one end of the pressure rod extends to the outside of the upper surface of the guide rail (61).

9. The external explosion-proof protection structure of a seismograph suitable for coal mine monitoring according to claim 8, characterized in that: A slide groove is provided on the inner side wall of the guide rail (61), and a limit slider (69) is fixedly installed on both side walls of the positioning plate (64), and the outer surface of the limit slider (69) is slidably connected to the inner wall of the slide groove. A fixing rod (67) is fixedly installed on the outer surface of the positioning plate (64), and teeth (68) are fixedly installed on the lower surface of the fixing rod (67).

10. The external explosion-proof protection structure of a seismograph suitable for coal mine monitoring according to claim 9, characterized in that: One end of the positioning plate (64) extends to the outside of the upper surface of the guide rail (61), a positioning spring (65) is fixedly installed on the inner wall of the positioning plate (64), one end of the positioning spring (65) is fixedly installed with a positioning pin (66), and one end of the positioning pin (66) extends to the outside of the positioning plate (64).

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