Mining intrinsic safety type transient electromagnetic instrument

Abstract

The utility model discloses a mining intrinsic safety type transient electromagnetic instrument, which belongs to the technical field of transient electromagnetic instruments and comprises a transient electromagnetic instrument body electrically connected with a coil through a connecting wire. The device further comprises a measuring support used for fixing the coil, a plurality of sets of clamping rings are fixedly installed at the bottom of the measuring support, the clamping rings are clamped to the surface of the coil, the measuring support comprises four sets of telescopic rods, and clamping pieces are fixedly installed at one ends of the telescopic rods. The measuring support is arranged to be formed by mutually clamping the four sets of telescopic rods, the structure is simple, convenience and practicability are achieved, the measuring support and the coil can be disassembled and contracted, an operator can conveniently move the measuring support and the coil, the difficulty of using the device in a mine is reduced, the size of the measuring support can be adjusted according to the measuring requirement, and the measuring precision is improved. And by matching with the adjusting feet, stable supporting force can be provided for the measuring bracket on the uneven ground.

Description

Technical Field

[0001] The utility model relates to the technical field of transient electromagnetic instruments, in particular to an intrinsically safe transient electromagnetic instrument for mining. Background Art

[0002] The transient electromagnetic method is based on the principle of electromagnetic induction. It uses an ungrounded coil to send a primary electromagnetic field underground. During the interval of the primary electromagnetic field, the ungrounded coil is used to observe the secondary eddy current field to analyze the physical property differences of different lithology. The intrinsically safe transient electromagnetic instrument is an instrument used in geological exploration and mineral resource detection. It has the characteristics of integrated transmitter, receiver and power supply. The intrinsically safe transient electromagnetic instrument has the characteristics of high working efficiency, short shutdown time, convenient data transmission and strong low resistance penetration ability. In the mining field, the intrinsically safe transient electromagnetic instrument is needed to detect the water-bearing properties and structure inside and outside the underground mining area and in front of the tunneling head.

[0003] After searching, in the prior art, Chinese patent publication number: CN220085082U discloses a mine transient electromagnetic instrument. The utility model includes a wire frame, support columns are arranged on both sides of the wire frame, and the lower ends of the two support columns are arranged with moving cylinders, and the insides of the two moving cylinders are arranged with screws, and the surface of the two screws is arranged with moving plates, and the outer surfaces of the two moving plates are fixedly connected to one end of the connecting rod, and the other ends of the two connecting rods are respectively fixedly connected to the two support columns. In the utility model, the second bevel gear rotates to drive the first bevel gear to rotate under the action of the rotating handle and the rotating rod, and drives the rotating rod and the screw to rotate, so that the moving plate moves up and down on the screw, thereby driving the connecting rod and the support column to move up and down, and finally adjusting the left and right height of the wire frame, thereby adjusting the height of the support rod by the height of the actual ground inside the mine, maintaining the overall stability of the support rod and the wire frame above it, and preventing the device from tipping over during use and causing the coil to be disordered.

[0004] But this device still has the following defects:

[0005] The measuring bracket and wire frame of the transient electromagnetic instrument are large in size, which is not conducive to movement and use in mines. This device does not solve this problem. In addition, the device adjusts the measuring bracket and wire frame body by setting structures such as support columns, moving cylinders and screw rods, which further increases the difficulty of moving and using the transient electromagnetic instrument in mines. Utility Model Content

[0006] The purpose of the utility model is to provide a mine-use intrinsically safe transient electromagnetic instrument. By arranging a measuring bracket into four groups of telescopic rods that are mutually clamped, the measuring bracket and the coil can be disassembled and retracted, which is convenient for operators to move the measuring bracket and the coil, reducing the difficulty of using the device in a mine, so as to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A mine-use intrinsically safe transient electromagnetic instrument, comprising a transient electromagnetic instrument body, wherein the transient electromagnetic instrument body is electrically connected to a coil via a connecting line;

[0009] It also includes a measuring bracket for fixing the coil, wherein a plurality of groups of clamping rings are fixedly installed at the bottom of the measuring bracket, and the clamping rings are clamped on the surface of the coil, and the measuring bracket includes four groups of telescopic rods, one end of the telescopic rods is fixedly installed with a clamping piece, and the other end of the telescopic rods is fixedly installed with a clamping joint, and the telescopic rods are clamped to each other through the clamping piece and the clamping joint;

[0010] It also includes four groups of adjustment feet, which are fixedly installed around the bottom of the measurement bracket.

[0011] Preferably, the telescopic rod comprises a movable rod, one end of the movable rod is fixedly connected to a clamping joint, and the clamping joint is clamped to a clamping piece of another telescopic rod.

[0012] Preferably, the telescopic rod further comprises a fixed rod, an inner cavity is defined in the interior of the fixed rod, and the movable rod is slidably matched with the inner cavity of the fixed rod.

[0013] Preferably, a spring positioning bead is fixedly mounted on one end of the movable rod, and a plurality of positioning holes for use with the spring positioning bead are opened on the surface of the fixed rod.

[0014] Preferably, one end of the fixing rod is fixedly connected to a clamping piece, and the clamping piece is clamped with a clamping joint on another group of telescopic rods.

[0015] Preferably, the adjusting foot comprises a fixing seat, the fixing seat is fixedly mounted on the clamping member, and a telescopic foot is slidably mounted inside the fixing seat.

[0016] Preferably, a limiting ring is fixedly installed on the bottom of the fixing seat, and a screwing part is rotatably installed on the bottom of the fixing seat. The screwing part is slidingly matched with the limiting ring, and the screwing part is threadedly matched with the telescopic foot.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model arranges the measuring bracket into four groups of telescopic rods which are mutually clamped, has a simple structure, is convenient and practical, can disassemble and retract the measuring bracket and the coil, is convenient for operators to move the measuring bracket and the coil, reduces the difficulty of using the device in the mine, and can adjust the size of the measuring bracket according to measurement requirements, and can be used with the adjustment feet to provide stable supporting force for the measuring bracket on uneven ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the telescopic rod structure;

[0021] Figure 3 Schematic diagram of the cross-section structure of the adjustment foot.

[0022] In the figure: 1. transient electromagnetic instrument body; 2. connecting wire; 3. coil; 4. measuring bracket; 401. telescopic rod; 4011. movable rod; 4012. fixed rod; 4013. spring positioning bead; 4014. positioning hole; 402. clamping part; 403. clamping joint; 5. clamping ring; 6. adjusting foot; 601. fixing seat; 602. telescopic foot; 603. limiting ring; 604. twisting part. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figures 1 to 3 , the utility model provides a technical solution:

[0025] A mine intrinsically safe transient electromagnetic instrument, comprising a transient electromagnetic instrument body 1, the transient electromagnetic instrument body 1 is electrically connected to a coil 3 through a connecting line 2; and also comprises a measuring bracket 4 for fixing the coil 3, a plurality of groups of clamping rings 5 ​​are fixedly installed at the bottom of the measuring bracket 4, the clamping rings 5 ​​are clamped on the surface of the coil 3, and the coil 3 can be supported and fixed by setting the measuring bracket 4, so as to facilitate fixing the position and size of the coil 3, thereby reducing the error value of the detection result; the measuring bracket 4 comprises four groups of telescopic rods 401, one end of the telescopic rods 401 is fixed A clamping piece 402 is installed, and a clamping joint 403 is fixedly installed on the other end of the telescopic rod 401. The telescopic rods 401 are clamped to each other through the clamping piece 402 and the clamping joint 403. By setting the clamping piece 402 and the clamping joint 403 for use with the telescopic rod 401, the measuring bracket 4 and the coil 3 can be disassembled and retracted, which is convenient for operators to move the measuring bracket 4 and the coil 3, reducing the difficulty of using the device in the mine, and the size of the measuring bracket 4 can be adjusted according to measurement requirements to adapt to different detection environments.

[0026] It also includes four groups of adjusting feet 6, which are fixedly installed around the bottom of the measuring bracket 4. The adjusting feet 6 include a fixed seat 601, which is fixedly installed on the clamping piece 402. A telescopic foot 602 is slidably installed inside the fixed seat 601. A limiting ring 603 is fixedly installed on the bottom of the fixed seat 601. A twisting part 604 is rotatably installed on the bottom of the fixed seat 601. The twisting part 604 is slidably matched with the limiting ring 603, and the twisting part 604 is threadedly matched with the telescopic foot 602. The height of the adjusting foot 6 can be adjusted by using the fixed seat 601, the twisting part 604 and the telescopic foot 602 in combination. By adjusting the height of the four groups of adjusting feet 6, a stable supporting force can be provided for the measuring bracket 4 even on an uneven ground, preventing the measuring bracket 4 and the coil 3 from tilting or shaking, thereby improving the accuracy of the detection result.

[0027] The telescopic rod 401 includes a movable rod 4011, one end of which is fixedly connected to a clamping joint 403, and the clamping joint 403 is clamped with a clamping piece 402 of another telescopic rod 401. The telescopic rod 401 also includes a fixed rod 4012, and an inner cavity is provided inside the fixed rod 4012. The movable rod 4011 slides in cooperation with the inner cavity of the fixed rod 4012. A spring positioning bead 4013 is fixedly installed on one end of the movable rod 4011, and a plurality of positioning holes 4014 are provided on the surface of the fixed rod 4012 for use with the spring positioning bead 4013. One end of the fixed rod 4012 is fixedly connected to the clamping piece 402, and the clamping piece 402 is clamped with a clamping joint 403 on another group of telescopic rods 401. By setting the spring positioning bead 4013 and the positioning hole 4014 for use with the movable rod 4011 and the fixed rod 4012, the length of the telescopic rod 401 can be locked after the length is adjusted, thereby fixing the size of the measuring bracket 4 and the coil 3.

[0028] When in use, the device is moved to a specified position, the spring positioning bead 4013 is pressed to disengage the spring positioning bead 4013 from the positioning hole 4014, and the movable rod 4011 is pulled to slide inside the fixed rod 4012, thereby adjusting the length of the telescopic rod 401. When adjusted to an appropriate length, the spring positioning bead 4013 is aligned with the positioning hole 4014 to lock the length of the telescopic rod 401. The same operation is performed to adjust other telescopic rods 401 to an appropriate length, and then the clamping joint 403 is clamped into the clamping part 402 to complete the installation of the measuring bracket 4, and then the coil 3 is clamped into the clamping ring 5 to fix the coil 3, and then the coil 3 is connected to the transient electromagnetic instrument body 1 through the connecting line 2 to complete the installation of the device.

[0029] 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 mine-use intrinsically safe transient electromagnetic instrument, characterized in that: It comprises a transient electromagnetic instrument body (1), wherein the transient electromagnetic instrument body (1) is electrically connected to a coil (3) via a connecting line (2); It also comprises a measuring bracket (4) for fixing the coil (3), wherein a plurality of groups of clamping rings (5) are fixedly mounted on the bottom of the measuring bracket (4), wherein the clamping rings (5) are clamped to the surface of the coil (3), and the measuring bracket (4) comprises four groups of telescopic rods (401), wherein a clamping piece (402) is fixedly mounted on one end of the telescopic rod (401), and a clamping joint (403) is fixedly mounted on the other end of the telescopic rod (401), and the telescopic rods (401) are clamped to each other via the clamping piece (402) and the clamping joint (403); It also comprises four groups of adjustment feet (6), wherein the adjustment feet (6) are fixedly mounted around the bottom of the measurement bracket (4).

2. The intrinsically safe transient electromagnetic instrument for mining according to claim 1, characterized in that: The telescopic rod (401) comprises a movable rod (4011), one end of which is fixedly connected to a clamping joint (403), and the clamping joint (403) is clamped to a clamping piece (402) of another telescopic rod (401).

3. The intrinsically safe transient electromagnetic instrument for mining according to claim 2, characterized in that: The telescopic rod (401) further comprises a fixed rod (4012), an inner cavity is provided inside the fixed rod (4012), and the movable rod (4011) is slidably matched with the inner cavity of the fixed rod (4012).

4. The intrinsically safe transient electromagnetic instrument for mining according to claim 3, characterized in that: A spring positioning bead (4013) is fixedly mounted on one end of the movable rod (4011), and a plurality of positioning holes (4014) for use with the spring positioning bead (4013) are provided on the surface of the fixed rod (4012).

5. The intrinsically safe transient electromagnetic instrument for mining according to claim 4, characterized in that: One end of the fixed rod (4012) is fixedly connected to the clamping piece (402), and the clamping piece (402) and the clamping joint (403) on the other set of telescopic rods (401) are mutually clamped.

6. The intrinsically safe transient electromagnetic instrument for mining according to claim 1, characterized in that: The adjusting foot (6) comprises a fixing seat (601), the fixing seat (601) is fixedly mounted on the clamping member (402), and a telescopic foot (602) is slidably mounted inside the fixing seat (601).

7. The intrinsically safe transient electromagnetic instrument for mining according to claim 6, characterized in that: A limiting ring (603) is fixedly installed at the bottom of the fixing seat (601), and a screwing portion (604) is rotatably installed at the bottom of the fixing seat (601). The screwing portion (604) is slidably matched with the limiting ring (603), and the screwing portion (604) is threadedly matched with the telescopic leg (602).

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