Transient electromagnetic transmitter for mine goaf and mounting device of transient electromagnetic transmitter

Abstract

The utility model belongs to the technical field of mine goaf detection, and particularly discloses a transient electromagnetic transmitter for a mine goaf, which comprises a transmitter shell, the transmitter shell is of a magnesium alloy honeycomb sandwich structure, a copper net and a ferrite sheet are embedded in the transmitter shell, a telescopic pipe is fixedly connected to the transmitter shell, a transmitting coil is arranged at the free end of the telescopic pipe, and the transmitter shell is provided with a coil coil. The outer layer of the transmitting coil is a conductive rubber layer, the middle layer is a nanocrystalline soft magnetic alloy belt, and the inner layer is a copper net; magnesium alloy is excellent in heat-conducting property and contributes to quickly transferring and dispersing heat, the honeycomb design increases the heat-dissipating surface area and improves the overall heat-dissipating efficiency, and meanwhile, the high heat-conducting property of copper contributes to quickly transferring and dispersing heat and improving the heat-dissipating efficiency so as to solve the problems that when used in a roadway of an inclined coal seam, a transmitting coil of a transmitting device cannot dissipate heat in time, and the service life of the transmitting coil is prolonged. And the accuracy of the detection result is reduced, so that the subsequent goaf treatment is influenced.

Description

Technical Field

[0001] This utility model relates to the field of mine goaf detection technology, specifically to a transient electromagnetic transmitter and its installation device for mine goaf. Background Technology

[0002] Mining goaf refers to cavities or loose areas formed underground by mining activities. These areas are left behind because the original underground space was not filled or supported after the ore was extracted. Goaf is usually accompanied by loosening of rock strata, development of fissures and redistribution of stress, which may lead to safety hazards such as surface collapse, groundwater leakage and gas accumulation. The existence of goaf poses a potential threat to mine safety production, surface ecological environment and surrounding infrastructure. Therefore, it is necessary to assess and control its risks through detection and remediation.

[0003] Transient electromagnetic systems (TEMS) are efficient and precise geophysical exploration devices, particularly suitable for mining goaf areas. The main structure of a TEMS includes a transmitter, receiver, control and data processing unit, power supply unit, and auxiliary structures. In use, the transmitter is placed on the surface or in the roadway to emit transient electromagnetic fields underground. The receiver then converts the electromagnetic signals into electrical signals and transmits them to the control and data processing unit. However, when used in roadways with inclined coal seams, the transmitter coil's inadequate heat dissipation or the inclination of the roadway can reduce the accuracy of goaf detection results, thus affecting subsequent goaf remediation. Utility Model Content

[0004] The purpose of this utility model is to provide a transient electromagnetic transmitter and its installation device for use in mine goaf areas, in order to solve the problem that when used in roadways of inclined coal seams, the transmitting coil of the transmitter device does not dissipate heat in time or is affected by the inclined roadway, resulting in a decrease in the accuracy of the detection results, thereby affecting the subsequent goaf management.

[0005] To achieve the above objectives, the basic solution provided by this utility model is as follows: a transient electromagnetic transmitter for use in mine goaf areas, comprising a transmitter housing, the transmitter housing being a magnesium alloy honeycomb sandwich structure, a copper mesh and ferrite sheet embedded inside the transmitter housing, a telescopic tube fixedly connected to the transmitter housing, a transmitting coil being provided at the free end of the telescopic tube, the outer layer of the transmitting coil being a conductive rubber layer, the middle layer being a nanocrystalline soft magnetic alloy strip, and the inner layer being a copper mesh.

[0006] The principle and beneficial effects of this utility model are as follows: magnesium alloy itself has excellent thermal conductivity, which helps to quickly transfer and disperse heat; the honeycomb design increases the heat dissipation surface area and improves the overall heat dissipation efficiency; copper has high electrical conductivity, which can effectively shield electromagnetic interference and prevent external interference from affecting the internal circuit; at the same time, copper's high thermal conductivity helps to quickly conduct and disperse heat, improving heat dissipation efficiency; ferrite material can absorb high-frequency electromagnetic waves and reduce electromagnetic radiation; the transmitting coil of the telescopic tube can be adjusted as needed; and the telescopic structure makes the coil easier to carry and store.

[0007] Option 2, which is the preferred option of the basic option, has a laser pointer fixed to the telescopic tube; the laser pointer can provide an intuitive visual reference to help the operator aim at the target more accurately. Through laser pointing, human aiming error can be reduced and the firing accuracy can be improved.

[0008] Option 3, which is the preferred option of the basic option, has a tilt sensor fixedly connected to the telescopic tube; the tilt sensor can measure the pitch and roll angles of the launching device in real time to ensure accurate launching angles and reduce human adjustment errors through precise angle data.

[0009] Option 4, the basic option, is a transient electromagnetic transmitter installation device for use in mine goaf areas. It includes a transmitter housing and a base. The transmitter housing is embedded in a groove in the base. A main rod, a sleeve, and a spring are fixedly connected to the bottom of the base. A main pipe is movably connected between the sleeve and the spring. A pointed tip is fixedly connected to the lower end of the main pipe. Several fixing claws are hinged to the main pipe. A limiting ring is movably sleeved on the main pipe. The free ends of the limiting ring and the fixing claws are engaged. A limiting component for fixing the transmitter housing is provided in the groove of the base. In use, the pointed tip is inserted into the ground, and then the limiting ring is moved upwards, allowing the fixing claws to fall freely and reinforce the pointed tip. Then, the transmitter housing is embedded in the groove of the base and fixed by the limiting component. The spring provides longitudinal shock absorption for the transmitter housing, making it suitable for uneven ground.

[0010] Option 5, which is a preferred option of Option 4, includes several springs II, each of which is fixedly connected to the base groove and abuts against the transmitter housing. A strap is fixedly connected to the base. In use, the springs II can fix the transmitter housing and provide lateral shock absorption. At the same time, different models of transmitter housings can be installed in the base, increasing the practicality of the device.

[0011] Option 6, which is a preferred option of option 5, has a limiting groove fixed to the free end of the strap and a limiting block fixed to the base, with the limiting groove and the limiting block engaging. The transmitter housing is then inserted into spring 2, and the strap is used to fix the transmitter housing a second time, increasing the safety of the device. Attached Figure Description

[0012] Figure 1This is a perspective view of a transient electromagnetic transmitter for use in a mine goaf according to this utility model;

[0013] Figure 2 This is a front view of a transient electromagnetic transmitter for use in a mine goaf according to this utility model;

[0014] Figure 3 This is a perspective view of an installation device for a transient electromagnetic transmitter used in a mine goaf according to this utility model.

[0015] Figure 4 This is a front view of an installation device for a transient electromagnetic transmitter used in a mine goaf according to this utility model;

[0016] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0017] Figure 6 This is an exploded view of an installation device for a transient electromagnetic transmitter used in a mine goaf according to this utility model.

[0018] Figure 7 This is an installation diagram of a transient electromagnetic transmitter and its installation device for use in mine goaf areas according to this utility model. Detailed Implementation

[0019] The present invention will be further described in detail below through specific embodiments:

[0020] The reference numerals in the accompanying drawings of the instruction manual include: 1. transmitter housing, 2. telescopic tube, 3. transmitting coil, 4. main rod, 5. fixing claw, 6. base, 7. sleeve, 8. spring two, 9. limiting ring, 10. laser pointer, 11. tilt sensor, 12. main tube, 13. spring one, 15. tip, 16. strap, 17. limiting block, 18. limiting groove.

[0021] Example 1

[0022] like Figure 1 and Figure 2 As shown: A transient electromagnetic transmitter for use in goaf areas of mines includes a transmitter housing 1, which is a magnesium alloy honeycomb sandwich structure. The transmitter housing 1 is embedded with a copper mesh and ferrite sheets. A telescopic tube 2 is fixedly connected to the transmitter housing 1. The telescopic tube 2 is composed of three sections of tubing that are movably connected. A laser pointer 10 is fixedly connected to the telescopic tube 2. The laser pointer 10 is a compact laser pointer, model Crimson Trace CMR-301. An tilt sensor 11 is fixedly connected to the telescopic tube 2. The tilt sensor 11 is a miniature tilt sensor, model Analog Devices ADIS16209. A transmitting coil 3 is provided at the free end of the telescopic tube 2. The transmitting coil 3 has an outer layer of conductive rubber, a middle layer of nanocrystalline soft magnetic alloy strip, and an inner layer of copper mesh.

[0023] The implementation method of this embodiment is as follows: When in use, magnesium alloy itself has excellent thermal conductivity, the honeycomb design increases the heat dissipation surface area, and the high thermal conductivity of copper mesh helps to quickly conduct and disperse heat, improving the overall heat dissipation efficiency. Copper also has high electrical conductivity, which can effectively shield electromagnetic interference and prevent external interference from affecting the internal circuit. The laser pointer 10 can provide an intuitive visual reference through laser indication, improving the launch accuracy. The tilt sensor 11 can measure the pitch angle and roll angle of the launching device in real time, ensuring accurate launch angle and reducing human error.

[0024] Example 2

[0025] like Figures 3 to 7 As shown: A transient electromagnetic transmitter installation device for use in a goaf of a mine includes a transmitter housing 1 and a base 6. The transmitter housing 1 is embedded in a groove in the base 6. A main rod 4, a sleeve 7, and a spring 13 are fixedly connected to the bottom of the base 6. A main pipe 12 is movably sleeved between the sleeve 7 and the spring 13. A tip 15 is fixedly connected to the lower end of the main pipe 12. The tip 15 has an anti-slip groove. Several fixing claws 5 are hinged on the main pipe 12. A limiting ring 9 is movably sleeved on the main pipe 12. The free end of the limiting ring 9 and the fixing claw 5 are engaged. A limiting component for fixing the transmitter housing 1 is provided in the groove of the base 6. The limiting component includes several springs 8. Each spring 8 is fixedly connected to the groove of the base 6 and abuts against the transmitter housing 1. A strap 16 is fixedly connected to the base 6. A limiting groove 18 is fixedly connected to the free end of the strap 16. A limiting block 17 is fixedly connected to the base 6. The limiting groove 18 and the limiting block 17 are engaged.

[0026] The implementation method of this embodiment is as follows: During installation, the tip 15 is inserted into the ground, and then the limiting ring 9 is moved upward so that the fixing claw 5 falls freely. The tip 15 is reinforced by the fixing claw 5. Then, the transmitter housing 1 is embedded into the groove of the base 6, and the transmitter housing 1 is fixed again by the strap 16. Spring 13 can provide longitudinal shock absorption for the transmitter housing 1, and spring 28 can fix the transmitter housing 1 and provide lateral shock absorption.

[0027] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A transient electromagnetic transmitter for use in mine goaf areas, characterized in that, The device includes a transmitter housing (1), which is a magnesium alloy honeycomb sandwich structure. The transmitter housing (1) is embedded with a copper mesh and a ferrite sheet. A telescopic tube (2) is fixedly connected to the transmitter housing (1). A transmitting coil (3) is provided at the free end of the telescopic tube (2). The outer layer of the transmitting coil (3) is a conductive rubber layer, the middle layer is a nanocrystalline soft magnetic alloy strip, and the inner layer is a copper mesh.

2. A transient electromagnetic transmitter for use in mine goaf areas according to claim 1, characterized in that... A laser pointer (10) is fixedly connected to the telescopic tube (2).

3. A transient electromagnetic transmitter for use in mine goaf areas according to claim 1, characterized in that, An angle sensor (11) is fixedly connected to the telescopic tube (2).

4. A transient electromagnetic transmitter installation device for use in mine goaf areas, characterized in that, The device includes a transmitter housing (1) and a base (6). The transmitter housing (1) is embedded in the groove of the base (6). The bottom of the base (6) is fixedly connected to a main rod (4), a sleeve (7) and a spring (13). A main tube (12) is movably connected between the sleeve (7) and the spring (13). A tip (15) is fixedly connected to the lower end of the main tube (12). Several fixing claws (5) are hinged on the main tube (12). A limiting ring (9) is movably connected on the main tube (12). The free ends of the limiting ring (9) and the fixing claws (5) are engaged. A limiting component for fixing the transmitter housing (1) is provided in the groove of the base (6).

5. The installation device for a transient electromagnetic transmitter in a mine goaf according to claim 4, characterized in that... The limiting component includes several springs (8), each spring (8) is fixed in the groove of the base (6), each spring (8) abuts against the transmitter housing (1), and a strap (16) is fixed on the base (6).

6. The installation device for a transient electromagnetic transmitter in a mine goaf according to claim 5, characterized in that, A limiting groove (18) is fixed to the free end of the strap (16), and a limiting block (17) is fixed to the base (6). The limiting groove (18) and the limiting block (17) are engaged.

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