WO2021159937A1

WO2021159937A1 - Stable measurement installation support for magnetotellurics magnetobars

Info

Publication number: WO2021159937A1
Application number: PCT/CN2021/072961
Authority: WO
Inventors: 邱宁; 孙珍
Original assignee: 中国科学院南海海洋研究所
Priority date: 2020-08-24
Filing date: 2021-01-21
Publication date: 2021-08-19
Also published as: CN112198555A

Abstract

A stable measurement installation support for magnetotellurics magnetobars, comprising insertion rods. The insertion rods are inserted into dug holes or into the ground so as to fix the position of a bottom panel. After the position of the bottom panel is fixed, a level is used to measure whether a horizontal panel is horizontal. If not horizontal, a rotation panel is rotated to adjust four corners of the horizontal panel until the horizontal panel is horizontal, thereby ensuring the normal measurement of the magnetobars. After the horizontal panel is adjusted to be horizontal, a vertical magnetobar or a horizontal magnetobar can be selected at will to be installed and inserted into the ground by means of the insertion rod, thereby stably fixing the magnetobar into a corresponding position without causing shaking. Provided inside of the installation support is a horizontal magnetobar installation seat, and a vertical magnetobar installation seat for installing and fixing a vertical magnetobar and for installing and fixing a horizontal magnetobar. The present invention is highly stable, easy to use, can be installed with high precision, and can effectively enhance work efficiency.

Description

Mounting bracket for stable measurement of magnet rod for magnetotelluric

Technical field

The invention relates to the technical field of magnetotelluric surveying, in particular to a magnet rod for magnetotelluric and a mounting bracket for stable measurement.

Background technique

Magnetotelluric sounding is a branch method of electrical sounding by changing the frequency of the electromagnetic field. It uses the skin effect of electromagnetic induction, that is, high-frequency electromagnetic field penetration is shallow, low-frequency electromagnetic field penetration is deep, and the distance between the field source and the receiving point is not Under changing conditions, change the frequency of the electromagnetic field to achieve the purpose of depth sounding. Usually, in the field work, it is necessary to arrange two pairs of mutually perpendicular electrodes to measure the electric field component, arrange three magnetic rods to measure the magnetic field component, and finally obtain complete electromagnetic field information. In the arrangement of electrodes and magnetic rods, two pairs of electrodes are located in the east-west direction and the north-south direction of the measuring point respectively. Two of the three magnetic rods are distributed horizontally, respectively in the east-west direction and the north-south direction. The other magnetic rod needs to be perpendicular to the Ground layout

When arranging the vertical magnetic rod to measure the magnetic field component, it is necessary to dig a deeper pit. During the process of filling the magnetic rod, it is very easy to cause the magnetic rod to shake and cause angle errors. When the magnetic rod is fixed on the ground, the magnetic rod will be affected Shaking due to the influence of wind, affecting the normal measurement of magnetic field components;

When arranging the horizontal magnetic bar, it is not only necessary to keep the horizontal magnetic bar in a specific direction, but also to keep the horizontal magnetic bar in a horizontal state. The arrangement is very troublesome, time-consuming and labor-intensive;

There are also some brackets designed for the installation of magnetic bars on the market, but on the one hand, these brackets can only be installed separately for horizontal or vertical installation, which has great limitations. On the other hand, the overall structure is more complicated and inefficient;

Based on this, we have proposed a magnet for magnetotelluric stable measurement mounting bracket, hoping to solve the shortcomings of the existing technology.

Summary of the invention

Aiming at the deficiencies of the prior art, the present invention provides a magnet rod for magnetotelluric use for stable measurement and installation.

In order to achieve the above objective, the technical solution of the present invention is:

A magnet rod stable measurement mounting bracket for magnetotelluric includes a bottom plate. The bottom surface of the bottom plate is provided with an insertion rod for inserting into the ground for fixing. The top surface of the bottom plate is provided with a horizontal fixing plate for horizontally fixing the magnetic rod. A horizontal adjustment assembly is arranged between the horizontal fixing plate and the bottom plate, the middle of the horizontal fixing plate is provided with a bracket for placing the magnet bar, and the horizontal fixing plate is also connected with a vertical fixing plate for vertically fixing the magnet bar, The top surface of the vertical fixing plate is provided with a socket, the socket is provided with a fixing assembly for fixing the magnetic rod, and a vertical adjustment assembly is arranged between the vertical fixing plate and the horizontal fixing plate.

Further, the level adjustment assembly includes a vertical tube arranged on the top surface of the bottom plate, a threaded sleeve is rotatably connected to the inside of the vertical tube, a screw is threaded in the threaded sleeve, and the top of the threaded sleeve is provided with a screw for driving it. Rotating rotating plate, a limit structure restricting the relative rotation of the screw and the vertical cylinder is provided between the screw and the vertical cylinder, the top of the screw is connected to the bottom surface of the horizontal fixing plate through a universal joint, the vertical cylinder, Three sets of threaded sleeves, screw rods and universal joints are arranged between the bottom plate and the horizontal fixed plate.

Further, the limiting structure includes a limiting rod protruding in the vertical cylinder and a limiting groove provided on the screw rod, and the limiting rod slides on the limiting groove to restrict the screw and the vertical cylinder from rotating relative to each other. .

Further, the level adjustment assembly further includes a level set at the bottom of the horizontal fixing plate.

Further, the middle part of the horizontal fixing plate is rotatably connected with a turntable, the horizontal fixing plate is provided with scales, and the bracket is arranged on the turntable.

Further, the fixing assembly includes a fastening box arranged on the top of the socket, and a circular ring-shaped spiral disk is rotatably connected in the fastening box, and at least two moving blocks are uniformly distributed on the top surface of the spiral disk. The top surface of the spiral disc is also provided with a fixed ring for restricting the moving block to move only in the radial direction of the spiral disc. The end of the movable block facing the center of the spiral disc is provided with an extruded plate, and the adjacent extruded plates An elastic rope is connected, the top surface of the spiral disk is provided with threads, the bottom of the moving block is provided with a groove adapted to the threads, and the bottom of the spiral disk is provided with a driving assembly for driving the spiral disk to rotate.

Further, the drive assembly includes a gear ring arranged at the bottom of the spiral disk, the gear ring is meshed with a gear, and the rotating shaft of the gear extends out of the fastening box and is connected with a knob.

Further, the vertical adjustment assembly includes a screw rod threadedly connected with the vertical fixing plate, the bottom end of the screw rod is rotatably connected with the horizontal part through a bearing, the top end of the screw rod is provided with a rotating handle, and the wire Three sets of rods, bearings and handles are arranged between the vertical fixing plate and the horizontal fixing plate, and the bottom surface of the vertical fixing plate is provided with pressure pads.

Further, the top of the socket is provided with a mounting plate, the mounting plate is provided with a compass groove, the bottom of the compass groove is provided with a through groove communicating with the socket, and the compass groove is provided with a compass.

Further, a protective cover is sheathed on the outside of the bottom plate, the bottom of the protective cover is provided with a wing edge, and the bottom plate is provided with a mounting ring, and the mounting ring and the wing edge are connected and fixed by bolts.

Compared with the prior art, the present invention has the following advantages:

The mounting bracket for stable measurement of the magnetic bar of the present invention can be inserted into the ground through an insertion rod, thereby stably fixing the magnetic bar in a corresponding position, and is not easy to shake. The mounting bracket is equipped with a horizontal magnetic rod mounting seat, and a vertical magnetic rod mounting seat, which can be used to install and fix the vertical magnetic rod or the horizontal magnetic rod. The mounting bracket fixes 2 magnetic bars at the same time, or uses 3 mounting brackets to set the 3 magnetic bars at different positions, which has high stability, convenient use, high installation accuracy, and effectively improves work efficiency.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of the mounting bracket for stable measurement of magnetotelluric magnets;

Fig. 2 is a schematic diagram of an enlarged structure of part A in Fig. 1;

Fig. 3 is a schematic diagram of an enlarged structure of part B in Fig. 1;

Figure 4 is a partial top view of the turntable of the magnetotelluric magnet for stable measurement of the mounting bracket;

Fig. 5 is a schematic diagram of an enlarged structure of part C in Fig. 1;

Figure 6 is a top view of a part of the fastening box of the magnetotelluric magnet for stable measurement of the mounting bracket;

Figure 7 is a schematic diagram of the bottom structure of the spiral disk of the magnetotelluric magnetic rod for stable measurement of the mounting bracket;

Description of reference signs: 1. bottom plate; 2. plunger; 3. mounting ring; 4. wing edge; 5. protective cover; 6. vertical cylinder; 7. threaded sleeve; 8. rotating plate; 9. screw; 10. Limit slot; 11. Limit rod; 12. Universal joint; 13. Horizontal fixed plate; 14. Level; 15. Turntable; 16. Bracket; 17, Horizontal magnetic bar bracket; 18. Bearing; 19. Screw rod; 20. Turning handle; 21. Vertical fixing plate; 22. Pressure pad; 23. Socket; 24. Vertical magnet bar slot; 25. Fastening box; 26. Mounting plate; 27. Compass slot; 28 29. Moving block; 30. Fixed ring; 31. Extrusion plate; 32. Elastic rope; 33. Gear ring; 34. Gear; 35. Rotating shaft; 36. Knob.

Detailed ways

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example

As shown in Fig. 1, a magnet rod for magnetotelluric magnets is used to measure the mounting bracket, which includes a circular bottom plate 1. The bottom surface of the bottom plate 1 is provided with inserting rods 2 for fixing on the ground. The specific number of inserting rods 2 is three. The circle center of 1 is evenly distributed on the bottom plate 1 as the center. The top surface of the bottom plate 1 is provided with a horizontal fixing plate 13 for horizontally fixing the magnetic rod, and a level adjustment assembly is provided between the horizontal fixing plate 13 and the bottom plate 1. The middle part of the horizontal fixing plate 13 is provided with a bracket 16 for placing the magnetic bar, and the bracket 16 is provided with a horizontal magnetic bar bracket 17 and the horizontal fixing plate 13 is also connected with a vertical fixing plate 21 for vertically fixing the magnetic bar. The top surface of the vertical fixing plate 21 is provided with a socket 23, the socket 23 is provided with a vertical magnet bar slot 24, the top of the socket 23 is provided with a fixing assembly for fixing the magnet bar, the vertical fixing plate 21 and the horizontal fixing plate 13 There is a vertical adjustment component between them. The bottom plate 1 is covered with a protective cover 5, the bottom of the protective cover 5 is provided with a wing edge 4, and the bottom plate 1 is provided with a mounting ring 3, and the mounting ring 3 and the wing edge 4 are connected and fixed by bolts, thereby connecting the bottom plate 1 and the protective cover 5.

The inner walls of the horizontal magnetic bar bracket 17 and the vertical magnetic bar slot 24 can also be provided with cushions. Since the bracket is fixed on the ground, in order to avoid the vibration of the ground itself, such as earthquakes, cars or pedestrians passing by, etc., The impact of measurement, the buffer pad can effectively buffer this kind of vibration, prevent the magnetic rod from shaking, reduce or eliminate the interference caused by external vibration during the measurement process.

As shown in Figure 2, the horizontal adjustment assembly is arranged between the horizontal fixing plate 13 and the bottom plate 1, and specifically includes a vertical cylinder 6 arranged on the top surface of the bottom plate 1. The vertical cylinder 6 is rotatably connected with a threaded sleeve 7 inside the threaded sleeve 7 The screw 9 is connected to the screw thread, and the top of the screw sleeve 7 is provided with a rotating plate 8 for driving its rotation. The universal joint 12 is connected to the bottom surface of the horizontal fixing plate 13. The limit structure includes a limit rod 11 protruding in the vertical cylinder 6 and a limit groove 10 provided on the screw 9, and the limit rod 11 slides on the limit groove 10 to limit the screw 9 and the vertical cylinder 6 from being able to face each other Rotate. The above-mentioned vertical cylinder 6, threaded sleeve 7, screw 9 and universal joint 12 are provided with three sets between the bottom plate 1 and the horizontal fixing plate 13, so as to ensure stability.

As shown in Figures 3 and 4, the bottom of the horizontal fixing plate 13 is also provided with a level 14; the middle of the horizontal fixing plate 13 is also rotatably connected to a turntable 15; the horizontal fixing plate 13 is provided with scales; 15 on. Through the turntable 15, the angular position of the horizontal magnetic bar can be adjusted so as to set it to be perpendicular to another horizontal magnetic bar. Through the horizontal ruler 14, when the horizontal state of the horizontal magnetic bar is adjusted, it can be detected whether it is horizontal. Thereby improving the accuracy of the horizontal magnetic bar installation.

As shown in Figures 5 to 7, the fixing assembly is arranged on the top of the socket 23, including a fastening box 25, in which a ring-shaped spiral disk 28 is rotatably connected to the fastening box 25, and the top surface of the spiral disk 28 is evenly distributed There are at least two moving blocks 29, specifically six in this embodiment. The top surface of the spiral disk 28 is also provided with a fixed ring 30 for restricting the moving block 29 to move only in the radial direction of the spiral disk 28. The fixed ring 30 is provided with a plurality of openings for the moving block 29 to move, and the moving block 29 faces the spiral. An extruded plate 31 is provided at one end of the center of the disc 28. The extruded plate 31 is an arc-shaped plate made of elastic material. An elastic cord 32 is connected between the connected extruded plates 31, so that the extruded plates 31 are always connected to each other. Keep the ring shape. When the extrusion plates 31 are close to each other, the ring composed of the extrusion plates 31 and the elastic cord 32 gradually shrinks and is tied to the outer wall of the vertical magnet bar, thereby fixing the position of the vertical magnet bar and placing the vertical magnet bar. The straight magnet is shaking.

The top surface of the spiral disk 28 is provided with a thread, the bottom of the moving block 29 is provided with a groove adapted to the thread, and the bottom of the spiral disk 28 is provided with a drive assembly for driving the spiral disk 28 to rotate. The ring gear 33 at the bottom of 28, the ring gear 33 is meshed with a gear 34, the shaft 35 of the gear 34 extends out of the fastening box 25, and is connected with a knob 36. When the knob 36 is turned, the gear 34 follows the knob 36 together. Rotation, through the meshing of the gear 34 and the ring gear 33, drives the rotation of the spiral disc 28, and then moves the moving block 29 along the radial direction of the spiral disc 28 under the action of the threads on the top surface of the spiral disc 28 and the fixed ring 30 .

The vertical adjustment assembly is arranged between the vertical fixing plate 21 and the horizontal fixing plate 13 for adjusting the vertical magnet bar to be in a vertical state, or adjusting the interval between the vertical fixing plate 21 and the horizontal fixing plate 13. The vertical adjustment assembly includes a screw rod 19 threadedly connected to the vertical fixing plate 21. The bottom end of the screw rod 19 is rotatably connected with the horizontal part through a bearing 18, and the top end of the screw rod 19 is provided with a handle 20, a screw rod 19, and a bearing 18. And the handle 20 is provided with three sets between the vertical fixing plate 21 and the horizontal fixing plate 13. The bottom surface of the vertical fixing plate 21 is also provided with a pressure pad 22. When the position of the horizontal magnetic rod is determined, the pressure pad 22 on the bottom surface of the vertical fixing plate 21 can be pressed on the horizontal magnetic rod through the vertical adjustment assembly to fix The position of the horizontal magnetic rod prevents the horizontal magnetic rod from shaking. The top of the socket 23 is provided with a mounting plate 26, the mounting plate 26 is provided with a compass groove 27, and the bottom of the compass groove 27 is provided with a through groove communicating with the socket 23. A compass can be placed in the compass slot 27, so that the angle of the horizontal magnetic rod can be adjusted by matching the compass with the scale on the horizontal fixed plate 13, and a horizontal ruler 14 can also be placed to detect the installation accuracy of the vertical magnetic rod. .

In specific use, two horizontal magnetic bars and one vertical magnetic bar can be installed and fixed respectively through three sets of mounting brackets, or one horizontal magnetic bar and one vertical magnetic bar can be fixed at the same time through a set of mounting brackets. Another set of mounting brackets fixes another horizontal magnetic bar to achieve the purpose of installing and fixing the magnetic bar.

Before the magnetic bar is installed, the whole bracket needs to be inserted into the ground through the plunger 2 to fix the position of the column base plate 1.

When installing the horizontal magnetic bar, first place the magnetic bar in the bracket 17, and then use the screw sleeve 7 of the rotating level adjustment assembly to adjust the horizontal fixing plate 13 to the level in combination with the level 14, and then rotate the turntable 15 to follow the compass groove The compass in 27 and the scale on the top of the horizontal fixed plate adjust the angle of the horizontal magnetic rod. After determining the level and angle of the horizontal magnetic rod, turn the screw rod 19 by turning the handle 20 of the vertical adjustment assembly to fix it vertically The plate 21 is lowered, so that the pressing pad 22 presses the horizontal magnetic rod, and the fixing of the horizontal magnetic rod is completed.

When installing the vertical magnet bar, first open the annular space between the compression plates 31 by rotating the knob 36, then insert the magnet bar from the compass slot 27 into the slot 24 of the socket 23, and then rotate the knob 36 , The spiral disk 28 is driven to rotate, and the moving block 29 is moved to the center of the spiral disk 28, so that the squeezing plate 31 presses the fixed column magnetic rod tightly to complete the fixation of the vertical magnetic rod. After fixing, the position of the vertical fixing plate 21 is adjusted by fine-tuning the vertical adjustment assembly, so that the vertical magnet bar is in a vertical state.

After the installation of the magnetic rod is completed, the wing 4 at the bottom of the protective cover 5 is fixed on the mounting ring 3 by a screw, so as to protect the structure in the protective cover 5.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and their purpose is to enable those of ordinary skill in the art to understand the content of the present invention and implement them accordingly, and should not limit the protection scope of the present invention. All equivalent changes or modifications made according to the essence of the present invention should be covered by the protection scope of the present invention.

Claims

A magnet rod measuring mounting bracket for magnetotelluric, which is characterized in that it comprises a bottom plate (1). The surface is provided with a horizontal fixing plate (13) for horizontally fixing the magnetic bar, a horizontal adjustment assembly is arranged between the horizontal fixing plate (13) and the bottom plate (1), and the middle of the horizontal fixing plate (13) is provided with The bracket (16) of the magnetic bar, the horizontal fixing plate (13) is also connected with a vertical fixing plate (21) for vertically fixing the magnetic bar, and the top surface of the vertical fixing plate (21) is provided with A socket (23), the socket (23) is provided with a fixing assembly for fixing the magnetic rod, and a vertical adjustment assembly is arranged between the vertical fixing plate (21) and the horizontal fixing plate (13).
The magnetotelluric rod measurement and mounting bracket for magnetotelluric according to claim 1, characterized in that: the level adjustment assembly comprises a vertical tube (6) arranged on the top surface of the bottom plate (1), and the inside of the vertical tube (6) A threaded sleeve (7) is rotatably connected to the threaded sleeve (7). The threaded sleeve (7) is internally threaded with a screw (9). The top of the threaded sleeve (7) is provided with a rotating plate (8) for driving its rotation. 9) and the vertical cylinder (6) are provided with a limiting structure that restricts the screw (9) and the vertical cylinder (6) from rotating relative to each other. The top of the screw (9) passes through a universal joint (12) and a horizontal fixing plate The bottom surface of (13) is connected, and the vertical cylinder (6), the threaded sleeve (7), the screw (9) and the universal joint (12) are provided with three sets between the bottom plate (1) and the horizontal fixing plate (13).
The magnetotelluric magnetic rod measuring and mounting bracket according to claim 2, characterized in that: the limiting structure comprises a limiting rod (11) protrudingly provided in the vertical cylinder (6) and a limiting rod (11) provided on the screw (9) The limit groove (10) is located on the limit groove (10), and the limit rod (11) slides on the limit groove (10) to restrict the screw (9) and the vertical cylinder (6) from rotating relative to each other.
The magnetotelluric rod measurement mounting bracket according to claim 2, characterized in that: the level adjustment assembly further comprises a level (14) arranged at the bottom of the horizontal fixing plate (13).
The magnet bar measuring mounting bracket for magnetotelluric use according to claim 1, characterized in that: the middle part of the horizontal fixing plate (13) is rotatably connected with a turntable (15), and a scale is provided on the horizontal fixing plate (13) , The bracket (16) is arranged on the turntable (15).
The magnet bar measuring mounting bracket for magnetotelluric use according to claim 1, characterized in that: the fixing assembly includes a fastening box (25) arranged on the top of the socket (23), and the fastening box (25) rotates in the fastening box (25). A spiral disk (28) in the shape of a circular ring is connected, and at least two moving blocks (29) are evenly distributed on the top surface of the spiral disk (28), and the top surface of the spiral disk (28) is also provided with a device for restricting movement. The fixed ring (30) of the block (29) that can only move in the radial direction of the spiral disc (28), and the end of the movable block (29) facing the center of the spiral disc (28) is provided with an extrusion plate (31), which is connected An elastic cord (32) is connected between the extruded plates (31), the top surface of the spiral disc (28) is provided with threads, and the bottom of the moving block (29) is provided with a groove adapted to the threads , The bottom of the spiral disc (28) is provided with a driving assembly for driving the spiral disc (28) to rotate.
The magnet rod measuring mounting bracket for magnetotelluric use according to claim 6, characterized in that: the drive assembly includes a gear ring (33) arranged at the bottom of the spiral disk (28), and the gear ring (33) is meshed with a gear (34), the rotating shaft (35) of the gear (34) extends out of the fastening box (25), and is connected with a knob (36).
The magnetotelluric rod measuring and mounting bracket according to claim 1, characterized in that: the vertical adjustment assembly comprises a screw rod (19) threadedly connected to the vertical fixing plate (21), and the screw rod (19) The bottom end of) is rotatably connected with the horizontal part through a bearing (18), the top of the screw rod (19) is provided with a handle (20), the screw (19), the bearing (18) and the handle (20) Three sets are arranged between the vertical fixing plate (21) and the horizontal fixing plate (13), and the bottom surface of the vertical fixing plate (21) is provided with a pressure pad (22).
The magnet bar measuring mounting bracket for magnetotelluric use according to claim 9, characterized in that: the top of the socket (23) is provided with a mounting plate (26), and the mounting plate (26) is provided with a compass slot (27) The bottom of the compass groove (27) is provided with a through groove communicating with the socket (23), and a compass is provided in the compass groove (27).
The magnetotelluric rod measurement mounting bracket according to claim 1, characterized in that: the bottom plate (1) is covered with a protective cover (5), and the bottom of the protective cover (5) is provided with a wing edge (4). ), a mounting ring (3) is provided on the bottom plate (1), and the mounting ring (3) and the wing edge (4) are connected and fixed by bolts.