Mining transient electromagnetic coil multidirectional accurate adjusting device

Abstract

A mining transient electromagnetic coil multidirectional accurate adjusting device comprises a base, a rotary joint, a first supporting column, a pitching joint, a second supporting column, a transmitting coil, a receiving coil, an adapter frame and a wiring board. The lower end of the first supporting column is connected with the base through the rotary joint. One end of the second strut is connected with the upper end of the first strut through a pitching joint; the transmitting coil is fixedly connected to the other end of the second strut; the adapter frame is fixedly connected to the transmitting coil; the receiving coil is fixedly connected to the adapter frame, and the receiving coil and the transmitting coil are coaxially distributed; the wiring board is arranged on the base; the transmitting coil and the receiving coil are connected with the wiring board through wires, and the wiring board is connected with the transient electromagnetic instrument through a wire. An orientation rotation angle index plate is arranged on the rotation joint; a pitch angle index plate is arranged on the pitch joint; nail leg supporting feet are arranged at four corners of the bottom of the base; the roots of the nail leg supporting feet are hinged to the base, and the nail leg supporting feet are overturned and folded through hinge points.

Description

Technical Field

[0001] The utility model belongs to the technical field of advanced detection in coal mining, and particularly relates to a multi-direction precise adjustment device for mine transient electromagnetic coils. Background Art

[0002] With the continuous increase of coal mining depth, geological abnormal areas such as faults and collapse columns will also increase continuously. Geological abnormal areas will further lead to coal seam fragmentation and poor coal seam occurrence conditions. Therefore, in order to prevent accidents, it is necessary to conduct advanced detection on the coal and rock mass conditions around the heading face and the mining face, and find out whether there are geological abnormal areas around the working face to better identify and evaluate potential risks.

[0003] At present, advanced detection mostly uses a transient electromagnetic instrument as the detection device, and the operation is carried out by three people working together. Among them, two people need to adjust the azimuth rotation angle and pitch angle of the transmitting coil and the receiving coil regularly according to the requirements of geophysical exploration design, and the other person operates the transient electromagnetic instrument.

[0004] However, when manually adjusting the azimuth rotation angle and pitch angle of the transmitting coil and the receiving coil, there will inevitably be a problem of low angle adjustment accuracy, and it is also difficult to ensure the angle consistency and position consistency of the transmitting coil and the receiving coil after adjustment, ultimately resulting in low detection accuracy and poor reliability of detection data. Summary of the Utility Model

[0005] Aiming at the problems existing in the prior art, the utility model provides a multi-direction precise adjustment device for mine transient electromagnetic coils, which can be operated by only one person, effectively saving human resources, and can greatly improve the adjustment accuracy of the azimuth rotation angle and pitch angle of the transmitting coil and the receiving coil, and can stably ensure the angle consistency and position consistency between the transmitting coil and the receiving coil during the angle adjustment process, thereby effectively improving the detection accuracy and the reliability of detection data.

[0006] To achieve the above object, the utility model adopts the following technical scheme: A multi-direction precise adjustment device for mine transient electromagnetic coils, comprising a base, a rotary joint, a first support column, a pitching joint, a second support column, a transmitting coil, a receiving coil, a transfer rack and a wiring board; the first support column is vertically arranged, and the lower end of the first support column is connected to the base through the rotary joint; one end of the second support column is connected to the upper end of the first support column through the pitching joint; the transmitting coil is fixedly connected to the other end of the second support column; the transfer rack is fixedly connected to the transmitting coil; the receiving coil is fixedly connected to the transfer rack, and the receiving coil and the transmitting coil are coaxially distributed; the wiring board is arranged on the base; the transmitting coil and the receiving coil are connected to the wiring board through wires, and the wiring board is connected to the transient electromagnetic instrument through wires.

[0007] An azimuth rotation angle indexing plate is provided on the slewing joint.

[0008] The minimum indexing unit of the azimuth rotation angle indexing plate is 5°.

[0009] An elevation angle indexing plate is provided on the elevation joint.

[0010] The minimum indexing unit of the elevation angle indexing plate is 5°.

[0011] Nail leg feet are provided at the four corners of the bottom of the base.

[0012] The root of the nail leg foot is hinged to the base, and the nail leg foot is flipped and folded through the hinge point.

[0013] Advantages of the present utility model:

[0014] The multi-directional precise adjustment device for a mine transient electromagnetic coil of the present utility model can be operated by only one person, effectively saving human resources, and can greatly improve the adjustment accuracy of the azimuth rotation angle and elevation angle of the transmitting coil and the receiving coil. Moreover, during the angle adjustment process, the angle consistency and position consistency between the transmitting coil and the receiving coil can be stably ensured, thereby effectively improving the detection accuracy and the reliability of detection data. Description of the drawings

[0015] Figure 1 It is a schematic structural diagram of a multi-directional precise adjustment device for a mine transient electromagnetic coil of the present utility model;

[0016] In the figure, 1 - base, 2 - slewing joint, 3 - first pillar, 4 - elevation joint, 5 - second pillar, 6 - transmitting coil, 7 - receiving coil, 8 - adapter frame, 9 - wiring board, 10 - azimuth rotation angle indexing plate, 11 - elevation angle indexing plate, 12 - nail leg foot. Specific embodiments

[0017] The following further elaborates on the present utility model in detail in conjunction with the drawings and specific embodiments.

[0018] As Figure 1As shown in the figure, a multi-directional precise adjustment device for a mine transient electromagnetic coil includes a base 1, a rotary joint 2, a first pillar 3, a pitching joint 4, a second pillar 5, a transmitting coil 6, a receiving coil 7, a transfer rack 8 and a wiring board 9. The first pillar 3 is vertically arranged, and the lower end of the first pillar 3 is connected to the base 1 through the rotary joint 2. One end of the second pillar 5 is connected to the upper end of the first pillar 3 through the pitching joint 4. The transmitting coil 6 is fixedly connected to the other end of the second pillar 5. The transfer rack 8 is fixedly connected to the transmitting coil 6. The receiving coil 7 is fixedly connected to the transfer rack 8, and the receiving coil 7 and the transmitting coil 6 are coaxially distributed. The wiring board 9 is arranged on the base 1. The transmitting coil 6 and the receiving coil 7 are connected to the wiring board 9 through wires, and the wiring board 9 is connected to the transient electromagnetic instrument through wires.

[0019] An azimuth rotation angle dividing disk 10 is arranged on the rotary joint 2.

[0020] The minimum division unit of the azimuth rotation angle dividing disk 10 is 5°.

[0021] A pitching angle dividing disk 11 is arranged on the pitching joint 4.

[0022] The minimum division unit of the pitching angle dividing disk 11 is 5°.

[0023] Nail leg feet 12 are arranged at the four corners of the bottom of the base 1.

[0024] The root of the nail leg foot 12 is hinged to the base 1, and the nail leg foot 12 is flipped and folded through the hinge point.

[0025] The following describes a usage process of the present invention with reference to the accompanying drawings:

[0026] Before use, first turn down and unfold the four nail leg feet 12 at the four corners of the base 1, and then the base 1 is stably supported on the roadway ground through the four nail leg feet 12.

[0027] After the base 1 is fixed to the roadway ground, first connect the transient electromagnetic instrument and the wiring board 9 together through wires, and then connect the wiring board 9 with the transmitting coil 6 and the receiving coil 7 together through wires.

[0028] After the wiring of the transmitting coil 6 and the receiving coil 7 is completed, first adjust the rotation angle of the first support column 3 through the rotary joint 2 so that the transmitting coil 6 and the receiving coil 7 face the right side of the roadway. In the initial state, the pitching angles of the transmitting coil 6 and the receiving coil 7 are 0, and detect the geological anomaly area of the first exploration point in this state. Subsequently, adjust the transmitting coil 6 and the receiving coil 7 to a 45° elevation angle through the pitching joint 4, and supplement and complete the detection of the geological anomaly area of the first exploration point in this state. Then, adjust the transmitting coil 6 and the receiving coil 7 to a 45° depression angle through the pitching joint 4, and further supplement and complete the detection of the geological anomaly area of the first exploration point in this state.

[0029] After the detection of the geological anomaly area of the first exploration point is completed, rotate the first support column 3 counterclockwise through the rotary joint 2 by an angle of 15°, so that the transmitting coil 6 and the receiving coil 7 move to the second exploration point, and refer to the detection process of the first exploration point to complete the detection of the geological anomaly area in the states of pitching angle of 0, elevation angle of 45°, and depression angle of 45° respectively.

[0030] And so on. Every time the first support column 3 rotates counterclockwise by 15°, complete a round of detection of the geological anomaly area by referring to the detection process of the first exploration point until the transmitting coil 6 and the receiving coil 7 rotate counterclockwise by 180° and face the left side of the roadway, and complete the detection process of the thirteenth exploration point. At this time, the detection operation of the geological anomaly area around the working face is all completed.

[0031] During the overall detection period of the transmitting coil 6 and the receiving coil 7, the angle adjustment can effectively ensure the accuracy of the angle adjustment through the rotary joint 2, the pitching joint 4, the azimuth rotation angle indexing plate 10, and the pitching angle indexing plate 11. At the same time, the transmitting coil 6 and the receiving coil 7 are coupled into a whole by the adapter frame 8, which fundamentally ensures the angle consistency and position consistency between the transmitting coil 6 and the receiving coil 7 during the angle adjustment process, and finally improves the detection accuracy and the reliability of the detection data.

[0032] The solutions in the embodiments are not intended to limit the protection scope of the present invention. Any equivalent implementation or modification without departing from the present invention is included in the protection scope of the present invention.

Claims

1. A multi-directional precise adjustment device for mine transient electromagnetic coils, characterized in that: It includes a base, a slewing joint, a first pillar, a pitching joint, a second pillar, a transmitting coil, a receiving coil, a transfer rack and a wiring board; the first pillar is vertically arranged, and the lower end of the first pillar is connected to the base through the slewing joint; one end of the second pillar is connected to the upper end of the first pillar through the pitching joint; the transmitting coil is fixedly connected to the other end of the second pillar; the transfer rack is fixedly connected to the transmitting coil; the receiving coil is fixedly connected to the transfer rack, and the receiving coil and the transmitting coil are coaxially distributed; the wiring board is arranged on the base; the transmitting coil and the receiving coil are connected to the wiring board through wires, and the wiring board is connected to the transient electromagnetic instrument through wires.

2. The multi-directional precise adjustment device for a mine transient electromagnetic coil according to claim 1, characterized in that: An azimuth slewing angle indexing plate is provided on the slewing joint.

3. The multi-directional precise adjustment device for a mine transient electromagnetic coil according to claim 2, characterized in that: The minimum indexing unit of the azimuth slewing angle indexing plate is 5°.

4. The multi-direction precise adjustment device for a mine transient electromagnetic coil according to claim 1, characterized in that: A pitching angle indexing plate is provided on the pitching joint.

5. A multi-directional precise adjustment device for a mine transient electromagnetic coil according to claim 4, characterized in that: The minimum indexing unit of the pitching angle indexing plate is 5°.

6. The multi-direction precise adjustment device for the mine transient electromagnetic coil according to claim 1, characterized in that: Nail leg feet are provided at the four corners of the bottom of the base.

7. A multi-directional precise adjustment device for a mine transient electromagnetic coil according to claim 6, characterized in that: The root of the nail leg foot is hinged to the base, and the nail leg foot is flipped and folded through the hinge point.

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