Mine transient electromagnetic magnetic probe observation device

Abstract

The utility model belongs to the technical field of transient electromagnetic data observation, and relates to a mine transient electromagnetic magnetic probe observation device, which is characterized in that the bottom of a magnetic probe is vertically placed in a middle round hole of a connecting hub, four side surfaces of the connecting hub are respectively provided with a screw hole, four support rods are respectively arranged in four bolts of the connecting hub, and the four support rods are connected with the connecting hub. The four supporting rods form a cross structure, and the coil is fixed on the top ends of the four supporting rods to form a rectangle, so that the magnetic probe has the advantages that the size of the coil is convenient to adjust, multi-angle measurement is convenient, the position and angle of the wire frame can be moved and adjusted by a single person, the interference of received signals of the magnetic probe is small, assembly is simple and convenient, and measurement precision is high; the method can greatly reduce manpower and time in mine transient electromagnetic exploration, and can be widely popularized and applied in mine transient electromagnetic observation.

Description

Technical Field

[0001] The utility model belongs to the technical field of transient electromagnetic data observation, and relates to a mine transient electromagnetic magnetic probe observation device. Background Art

[0002] Transient electromagnetic exploration in mines is widely used in mine water prevention and control work. It is favored by mine water prevention and control practitioners for its advantages such as simple construction and accurate detection results. However, during the measurement process, the receiving coil receives interference from multiple directions around it, resulting in poor received signals and inability to accurately measure data and other results. In addition, the coil needs to be moved during the measurement process. The existing wire frame is difficult to ensure that the coil does not deform during the movement. Most of the time, multiple people are required to move the coil together, which can easily affect the accuracy of transient electromagnetic detection. For example, CN205539514U discloses a transient electromagnetic detection device, which includes a transient electromagnetic instrument and a multi-core transceiver cable. One end of the multi-core transceiver cable is connected to the signal transmitting end of the transient electromagnetic instrument, and the other end is connected to the signal receiving end of the transient electromagnetic instrument. The receiving end is connected, with the signal transmitting end of the transient electromagnetic instrument as the starting point and the signal receiving end of the transient electromagnetic instrument as the end point, the multi-core transceiver cable is arranged into a first rectangular wire frame according to a preset first direction, and then arranged into a second rectangular wire frame according to a preset second direction, the preset first direction is opposite to the preset second direction, the first rectangular wire frame and the second rectangular wire frame are parallelly distributed in the horizontal direction, and the length and width of the first rectangular wire frame and the second rectangular wire frame are respectively equal; CN204462413U discloses an anti-interference transient electromagnetic detection device for coal mine goaf water accumulation area The device includes a transient electromagnetic instrument and a multi-core transmitting and receiving cable, which is characterized in that the signal transmitting end of the transient electromagnetic instrument and the signal receiving end of the transient electromagnetic instrument are connected in parallel, the starting end of the multi-core transmitting and receiving cable is connected to one end of the signal transmitting end of the transient electromagnetic instrument, the multi-core transmitting and receiving cable is first arranged in a clockwise direction to form a left square coil frame and then arranged in a counterclockwise direction to form a right square coil frame, and the terminal of the multi-core transmitting and receiving cable is connected to the other end of the signal transmitting end of the transient electromagnetic instrument; CN219039382U discloses a transient electromagnetic transmitter for mining. The backscatter support includes a support frame, which includes an upper cable frame, one end of the upper cable frame is connected to one end of a first right-angle connector, the other end of the first right-angle connector is connected to one end of a right cable frame, the other end of the right cable frame is connected to one end of a second right-angle connector, the other end of the second right-angle connector is connected to one end of a lower cable frame, the other end of the lower cable frame is connected to one end of a third right-angle connector, the other end of the third right-angle connector is connected to one end of a left cable frame, and the other end of the left cable frame is connected to the other end of the upper cable frame via a fourth right-angle connector; a cable suspension device is provided on the right and left cable frames. Therefore, a new mine transient electromagnetic transmitting coil-magnetic probe observation device is urgently needed. Summary of the Invention

[0003] In order to overcome the above-mentioned defects, the utility model provides a mine transient electromagnetic magnetic probe observation device. By designing a wire frame composed of a cross bracket to load the magnetic probe, one person can complete the rapid movement measurement of the coil without the coil being deformed; at the same time, the accuracy of the received signal is improved and noise interference is reduced.

[0004] To achieve the above-mentioned purpose, the utility model provides a mine transient electromagnetic magnetic probe observation device including a magnetic probe, a support rod, a connecting hub and a coil. The bottom of the magnetic probe is vertically placed in the central circular hole of the connecting hub. Screw holes are provided on the four sides of the connecting hub. The four support rods are respectively installed in the four bolts of the connecting hub. The four support rods form a cross structure, and the coil is fixed on the top of the four support rods to form a rectangle.

[0005] As a further technical solution of the present invention, the magnetic probe is cylindrical, and the radius of its bottom surface is smaller than the radius of the circular hole in the middle of the connecting hub; a data connection port, a level bubble and an indicator light are provided on the top of the magnetic probe; the data connection port connects the magnetic probe to the external host through a data transmission line, and the indicator light and the level bubble respectively display the operating status of the magnetic probe and the horizontal status of the adjustment device.

[0006] As a further technical solution of the present invention, the support rod includes a fixing rod, an adjusting knob and an outer sleeve. The outer sleeve is a cylindrical sleeve, and a slit threaded joint is provided at one end of the outer sleeve; the threaded joint of the outer sleeve is installed in the four screw holes of the connecting hub, the fixing rod is a cylindrical solid rod, and its bottom radius is smaller than the bottom radius of the outer sleeve. The fixing rod is sleeved inside the outer sleeve, and a four-pronged slot is provided at the upper end of the fixing rod, and the coil is connected to the four-pronged slot at the top of the fixing rod; a thread is provided inside the adjusting knob, and the radius of the top screw hole is smaller than the radius of the bottom screw hole; the adjusting knob is installed at the sleeve mouth of the outer sleeve.

[0007] As a further technical solution of the present invention, the connecting hub is cross-shaped, the central circular hole of the connecting hub is unthreaded, and screw holes are provided on the four sides. The length of the screw hole channel is less than the length of the threaded joint at the bottom of the outer casing.

[0008] Compared with conventional coil devices, the utility model has the advantages of convenient adjustment of coil size, convenient multi-angle measurement, single-person movement and adjustment of wire frame position and angle, small interference of received signals of magnetic probe, simple and convenient assembly, and high measurement accuracy. It can greatly reduce manpower and time in mine transient electromagnetic exploration and can be widely promoted and applied in mine transient electromagnetic observation. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is an axial schematic diagram of the mine transient electromagnetic magnetic probe observation device provided by the utility model;

[0010] Figure 2 This is a schematic diagram of the magnetic probe axis provided by the utility model;

[0011] Figure 3 A schematic diagram of the support rod axis provided by the utility model;

[0012] Figure 4 This is a schematic diagram of the axial side of the support rod components provided by the utility model;

[0013] Figure 5 A schematic diagram of the connecting hub axis provided by the present utility model;

[0014] The serial numbers in the attached figure are: 1. magnetic probe; 1-1. data connection port; 1-2. level bubble; 1-3. indicator light; 2. support rod; 2-1. fixing rod; 2-2. adjustment knob; 2-3. outer casing; 3. connection hub; 4. coil. DETAILED DESCRIPTION

[0015] To better understand the present invention, the following description will be made with reference to the accompanying drawings and specific embodiments. The specific embodiments are intended only to facilitate understanding of the present invention. The present invention is not limited to the specific embodiments.

[0016] like Figure 1 and Figure 3 As shown, this embodiment provides a mine transient electromagnetic magnetic probe observation device, including a magnetic probe 1, a support rod 2, a connecting hub 3 and a coil 4. The bottom of the magnetic probe 1 is vertically placed in the central circular hole of the connecting hub 3. Screw holes are provided on the four sides of the connecting hub 3. The four support rods 2 are respectively installed in the four bolts of the connecting hub 3. The four support rods 2 form a cross structure, and the coil 4 is fixed on the top of the four support rods 2 to form a rectangle.

[0017] like Figure 2 As shown, the magnetic probe 1 is cylindrical, and the radius of its bottom surface is slightly smaller than the radius of the circular hole in the middle of the connecting hub 3; the top of the magnetic probe 1 is provided with a data connection port 1-1, a level bubble 1-2 and an indicator light 1-3; the data connection port 1-1 is used to connect the magnetic probe 1 to an external host through a data transmission line, and 1-3 and a level bubble 1-2 are provided to respectively display the operating status of the magnetic probe and the horizontal state of the adjustment device.

[0018] like Figure 3 and Figure 4As shown, the support rod 2 includes a fixing rod 2-1, an adjusting knob 2-2 and an outer sleeve 2-3. The outer sleeve 2-3 is a cylindrical sleeve, and one end of the outer sleeve 2-3 is provided with a slit threaded joint; the threaded joint of the outer sleeve 2-3 is installed in the four screw holes of the connecting hub 3, and the extrusion of the four support rods 2 fixes the magnetic probe 1 on the connecting hub 3; the fixing rod 2-1 is a cylindrical solid rod, and the bottom radius of the fixing rod 2-1 is slightly smaller than the bottom radius of the outer sleeve 2-3. The fixing rod 2-1 is sleeved inside the outer sleeve 2-3, and a four-pronged head-shaped slot is provided on the upper end of the fixing rod 2-1. The coil 4 is connected to the four-pronged slot at the top of the fixed rod 2-1. The four-pronged slot provides two fulcrums on each side of the coil 4, which makes it easy to keep the coil firm and not easy to fall off or twist; the adjusting knob 2-2 is provided with a thread, and the radius of the top screw hole is slightly smaller than the radius of the bottom screw hole; the adjusting knob 2-2 is installed at the sleeve mouth of the outer sleeve 2-3. When the adjusting knob 2-2 is tightened, the sleeve mouth is squeezed, and the gap at the upper end is reduced, making it difficult for the fixed rod 2-1 to slide. The adjusting rod 2-2 can freely extend and retract in the outer sleeve 2-3, and the length of the support rod 2 can be adjusted by adjusting the length of the rod 2-2.

[0019] like Figure 5 As shown, the connecting hub 3 is cross-shaped. In order to reduce unnecessary weight, the central circular hole of the connecting hub 3 is not threaded, and screw holes are provided on the four sides. The length of the screw hole channel is less than the length of the threaded joint at the bottom of the outer casing 2-3. The threaded joints on the four sides that extend beyond the screw hole channel apply extrusion force to the magnetic probe 1 to fix the magnetic probe 1.

[0020] When using this embodiment, the bottom of the magnetic probe 1 is first placed vertically into the circular hole in the middle of the connecting hub 3. Four identical support rods 2 are used, and the threaded joints at the bottom of their outer sleeves 2-3 are respectively connected to the four side screw holes of the connecting hub 3. The magnetic probe 1 is fixed to the hub by the squeezing effect of the four support rods 2. Then, the coil 4 of the preset measuring length is clamped at the top groove of the fixing rod 2-1. The adjusting knob 2-2 is loosened to extend the fixing rod 2-1. The four support rods 2 maintain the same length to ensure that the magnetic probe 1 is always in the center of the coil until the coil is supported. The adjusting knob 2-2 is tightened to fix the length of the support rods 2, and the assembly is completed. The data connection port 1-1 on the magnetic probe 1 is connected to the transient electromagnetic instrument through a data transmission line. The level bubble 1-2 is used to confirm the horizontal condition of the device during multi-angle measurement to ensure data accuracy. The indicator light 1-3 displays the working status of the magnetic probe 1. If the indicator light 1-3 is not green, it is necessary to check whether the data transmission line is in good condition or whether the magnetic probe 1 is damaged. After the device is installed, the transient electromagnetic instrument is turned on to start collecting data.

[0021] This embodiment filters out most of the noise interference by adding the magnetic probe 1, thereby achieving the purpose of improving the accuracy of the received signal; the telescopic function of the support rod 2 can adjust the length of the coil, with high adjustability, and is suitable for the use of coils of various lengths; the connecting hub 3 plays the role of fixing the magnetic probe 1 and the support rod 2, making the various parts integrated, so that a single person can quickly move the device without deforming the coil, achieving the effect of rapid measurement.

[0022] The above description is only a preferred embodiment of the present invention and does not limit the scope and design of the present invention. If, based on the design of the present invention, ordinary technicians in this technical field make optimizations and modifications to the present invention, they should fall within the scope of protection of the present invention.

Claims

1. A mine transient electromagnetic magnetic probe observation device, characterized in that: It includes a magnetic probe, a support rod, a connecting hub and a coil. The bottom of the magnetic probe is placed vertically in the central circular hole of the connecting hub. Screw holes are provided on the four sides of the connecting hub. The four support rods are respectively installed in the four bolts of the connecting hub. The four support rods form a cross structure. The coil is fixed on the top of the four support rods to form a rectangle.

2. The mine transient electromagnetic magnetic probe observation device according to claim 1, characterized in that: The magnetic probe is cylindrical, and the radius of its bottom surface is smaller than the radius of the circular hole in the middle of the connecting hub; a data connection port, a level bubble and an indicator light are provided on the top of the magnetic probe; the data connection port connects the magnetic probe to an external host through a data transmission line, and the indicator light and the level bubble respectively display the operating status of the magnetic probe and the horizontal status of the adjustment device.

3. The mine transient electromagnetic magnetic probe observation device according to claim 2, characterized in that: The support rod includes a fixing rod, an adjusting knob and an outer sleeve. The outer sleeve is a cylindrical sleeve, and a slit threaded joint is provided at one end of the outer sleeve; the threaded joint of the outer sleeve is installed in the four screw holes of the connecting hub, the fixing rod is a cylindrical solid rod, and its bottom radius is smaller than the bottom radius of the outer sleeve. The fixing rod is sleeved inside the outer sleeve, and a four-pronged slot is provided at the upper end of the fixing rod, and the coil is connected to the four-pronged slot at the top end of the fixing rod; a thread is provided inside the adjusting knob, and the radius of the top screw hole is smaller than the radius of the bottom screw hole; the adjusting knob is installed at the sleeve mouth of the outer sleeve.

4. The mine transient electromagnetic magnetic probe observation device according to claim 3, characterized in that: The connecting hub is cross-shaped, the central circular hole of the connecting hub is unthreaded, and screw holes are provided on the four sides. The length of the screw hole channel is less than the length of the threaded joint at the bottom of the outer casing.

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