Support special for magnetotelluric instrument probe

Abstract

The utility model provides a support special for a magnetotelluric instrument probe. The support comprises a workbench, a supporting column, a connecting base, universal wheels, a supporting structure, a fixing base and a clamping structure. The clamping structures are symmetrically installed on the two sides of the fixing base respectively. The supporting columns are fixedly installed at the four corners of the bottom of the workbench correspondingly. The bottom of each supporting column is fixedly provided with the corresponding connecting base. The universal wheels are installed on the inner side of the bottom of the connecting base, and the supporting structure is installed on the outer side of the bottom of the connecting base. The supporting structure is of a treading type structure. The process that the supporting base supports the ground or retracts into the containing cavity to be switched into the moving wheel walking process is achieved through treading operation, a user can use the device conveniently, workers do not need to bend down to rotate bolts and other operations, lumbar muscle strain is reduced, the health of the workers is guaranteed, and working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of brackets, in particular to a special bracket for a magnetotelluric instrument probe. Background Art

[0002] Geophysics uses the principles and methods of physics to observe the distribution and changes of various physical fields on the earth, explore the medium structure, material composition, formation and evolution of the earth and near-earth space, and study various natural phenomena related to it and their laws of change. On this basis, it provides theories, methods and technologies for detecting the internal structure and structure of the earth, searching for energy, resources and environmental monitoring, and provides an important basis for disaster forecasting. When studying geophysics, it is necessary to use a geophysical magnetotelluric probe for observation, and the geophysical magnetotelluric probe needs a special bracket for support and fixation.

[0003] A special bracket for a geophysical magnetotelluric instrument probe, publication number CN213658989U, includes a workbench, the lower surface of the workbench is fixedly connected to the upper surface of a first connecting block, the first connecting block is penetrated by a first connecting shaft, both sides of the outer surface of the first connecting shaft are fixedly connected to the notch of a concave connecting block, the lower surface of the concave connecting block is fixedly connected to the upper surface of a supporting device, the middle part of the upper surface of the workbench is fixedly connected to the lower surface of a fixed seat, and the left side of the upper surface of the workbench is fixedly connected to the lower surface of a first supporting plate; by setting a supporting device, the roller in the supporting device can drive the bracket to move, and when not in use, the roller can be clamped into the slot by screwing the first bolt and the second bolt, and the fixed feet in the supporting device can adapt to a variety of terrains, thereby ensuring the stability of the bracket and diversifying the functions of the supporting legs.

[0004] At present, the existing brackets have the following disadvantages in use:

[0005] The rollers and fixed feet in the supporting device respectively realize the overall movement of the device and the effect of stable support at the working point during operation; however, the staff needs to bend over and respectively tighten the first bolt and the second bolt, and then fold the first fixing rod and the second fixing rod to realize the switching of the roller and the fixed foot functions. Frequent bending movements will cause fatigue and tension of the waist muscles. Doing so for a long time may cause low back pain or lumbar muscle strain, seriously affecting the health and work efficiency of the staff. Therefore, it is inconvenient for users to use. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the above technical defects and provide a special bracket for the probe of the magnetotelluric instrument.

[0007] In order to solve the above problems, the technical solution of the utility model is:

[0008] The utility model provides a special bracket for a magnetotelluric instrument probe, comprising a workbench (1), a support column (2), a connecting seat (3), a universal wheel (4), a support structure (5), a fixing seat (6) and a clamping structure (7);

[0009] The fixing seat (6) is fixedly mounted at the top center of the workbench (1), and the clamping structures (7) are symmetrically mounted on both sides of the fixing seat (6); the supporting columns (2) are fixedly mounted at the four corners of the bottom of the workbench (1); the connecting seat (3) is fixedly mounted at the bottom of each supporting column (2); the universal wheel (4) is mounted on the inner side of the bottom of the connecting seat (3), and the supporting structure (5) is mounted on the outer side of the bottom of the connecting seat (3); the supporting structure (5) is a stepping structure.

[0010] Furthermore, the support structure (5) comprises a sleeve rod (501), a left connecting rod unit, a right connecting rod unit, a movable rod (504), a support seat (505), a Z-shaped pressure rod (506), a pedal (507), a first spring (508) and a limiting structure (509);

[0011] The bottom of the connecting seat (3) is fixedly mounted with the sleeve rod (501) in a vertical direction; a cavity is provided inside the sleeve rod (501), and the first spring (508) is provided at the top of the cavity;

[0012] The top end of the movable rod (504) is inserted into the cavity and abuts against the bottom of the first spring (508); the movable rod (504) can slide up and down relative to the sleeve rod (501) to achieve an extension or retraction function; the limiting structure (509) is installed between the movable rod (504) and the sleeve rod (501) to achieve the fixed position between the movable rod (504) and the sleeve rod (501) when the movable rod (504) slides into place; the supporting seat (505) is fixedly installed at the bottom end of the movable rod (504);

[0013] The left connecting rod unit and the right connecting rod unit are installed symmetrically on the left and right, and both include a connecting plate (502) and an L-shaped plate (503); the top end of the connecting plate (502) is hinged to the side wall of the sleeve rod (501); the bottom end of the connecting plate (502) is hinged to one end of the L-shaped plate (503); the bending point of the L-shaped plate (503) is hinged to the side wall of the movable rod (504); the other end of the L-shaped plate (503) is fixed to the pedal (507); the side surface of the connecting plate (502) is fixed to one end of the Z-shaped pressure rod (506).

[0014] Furthermore, a plurality of equally spaced slots (510) are respectively provided on both sides of the cavity of the sleeve rod (501);

[0015] Through cavities are respectively provided on both sides of the top of the movable rod (504), and a retractable limiting structure (509) is installed inside each of the through cavities; the limiting structure (509) comprises a telescopic rod (5091), a second spring (5092) and a convex block (5093); the telescopic rod (5091) is horizontally arranged inside the through cavity, one end of which is fixed to the inner wall of the through cavity, and the other end of which is fixedly installed with the convex block (5093); the outer wall of the telescopic rod (5091) is wound around the second spring (5092);

[0016] When the movable rod (504) slides into place relative to the sleeve rod (501), the protrusion (5093) is embedded in the slot (510).

[0017] Furthermore, the bottom of the support seat (505) is fixedly connected to an anti-slip pad.

[0018] Furthermore, the clamping structure (7) on each side includes a fixing plate (701), a bolt (702), a limiting rod (703), a spring three (704) and a clamping plate (705);

[0019] The fixing plate (701) is installed on the side of the fixing seat (6), and the bottom of the fixing plate (701) is fixed to the workbench (1); the clamping plate (705) is arranged on one side of the fixing plate (701) close to the fixing seat (6);

[0020] A threaded hole is provided at the center of the fixing plate (701); one end of the bolt (702) is located outside the fixing plate (701); the other end is threadedly passed through the threaded hole and is movably connected to the center of the clamping plate (705); when the bolt (702) rotates, the clamping plate (705) is pushed closer to or away from the fixing seat (6);

[0021] The fixing plate (701) is provided with smooth through holes on both sides of the threaded hole; one end of the limiting rod (703) passes through the smooth through hole of the fixing plate (701) and is fixedly connected to the clamping plate (705); the outer wall of the limiting rod (703) is sleeved with the spring three (704).

[0022] Furthermore, the outer wall of the limiting rod (703) and the area between the fixing plate (701) and the clamping plate (705) are sleeved with the spring three (704), so that the two ends of the spring three (704) respectively abut against the fixing plate (701) and the clamping plate (705).

[0023] The utility model provides a special bracket for magnetotelluric instrument probe, which has the following advantages:

[0024] 1. The utility model provides a special bracket for the probe of the magnetotelluric instrument. When support is needed, it is only necessary to step on the pedal downwards, so that the movable rod pushes the support seat to move downwards, and the extension and contraction amount of the movable rod is fixed by the limiting structure; if the support seat needs to be retracted, it is only necessary to step on the Z-shaped pressure rod downwards, so as to push the movable rod to retract upward into the cavity; therefore, the support seat supports the ground or retracts into the cavity to switch to the process of moving wheels walking through the stepping operation. The whole process only needs the staff to step on the pedal to complete, which is convenient for users to use and does not require the staff to bend over to rotate bolts and other operations, thereby reducing lumbar muscle strain, ensuring the health of the staff and improving work efficiency.

[0025] 2. The utility model provides a special bracket for a magnetotelluric instrument probe, which realizes the centering clamping of electromagnetic instrument probes of different sizes through two sets of clamping structures, thereby ensuring the stability of the probe centering clamping, ensuring the accuracy of data reading, and improving operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional diagram of the special bracket for the magnetotelluric instrument probe provided by the utility model;

[0027] Figure 2 yes Figure 1 A three-dimensional view of the central support structure at an angle;

[0028] Figure 3 yes Figure 1 A three-dimensional view of the central support structure at another angle;

[0029] Figure 4 yes Figure 1 A side cross-sectional view of the middle support structure;

[0030] Figure 5 yes Figure 4 The enlarged view of point A in the middle;

[0031] Figure 6 yes Figure 1 Enlarged view of point B in the middle.

[0032] As shown in the figure: 1. Workbench; 2. Support column; 3. Connecting seat; 4. Universal wheel; 5. Support structure; 501. Sleeve rod; 502. Connecting plate; 503. L-shaped plate; 504. Movable rod; 505. Support seat; 506. Z-shaped pressure rod; 507. Pedal; 508. First spring; 509. Limiting structure; 5091. Telescopic rod; 5092. Second spring; 5093. Bump; 510. Slot; 6. Fixed seat; 7. Clamping structure; 701. Fixed plate; 702. Bolt; 703. Limiting rod; 704. Third spring; 705. Clamping plate. DETAILED DESCRIPTION

[0033] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.

[0034] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0035] See also Figures 1 to 6 The utility model provides a special bracket for a magnetotelluric instrument probe, comprising a workbench 1, a support column 2, a connecting seat 3, a universal wheel 4, a supporting structure 5, a fixing seat 6 and a clamping structure 7;

[0036] A fixing seat 6 is fixedly installed at the top center of the workbench 1, and the fixing seat 6 is used to assemble and install the magnetotelluric instrument probe; clamping structures 7 are symmetrically installed on both sides of the fixing seat 6; the clamping structures 7 are used to clamp magnetotelluric instrument probes of different sizes to ensure the stability of the magnetotelluric instrument probe when working;

[0037] The four corners of the bottom of the workbench 1 are fixedly installed with support columns 2; the bottom of each support column 2 is fixedly installed with a connecting seat 3; the inner side of the bottom of the connecting seat 3 is installed with a universal wheel 4, and the outer side of the bottom of the connecting seat 3 is installed with a support structure 5; the support structure 5 is a pedal-type structure.

[0038] Through the device provided in the present application, switching between the universal wheel 4 and the support structure 5 can be achieved in a pedal-type manner. When the universal wheel 4 is on the ground and walking, the support structure 5 is off the ground and suspended above the universal wheel 4. At this time, it is convenient to move the entire device through the universal wheel 4; when the support structure 5 is on the ground and stably supported on the ground, the universal wheel 4 is off the ground and suspended above the support structure 5. At this time, the device is in a working state. Through the stable supporting effect of the support structure 5, the stability of the device during operation is improved, and the shaking of the device is avoided, thereby ensuring the working accuracy of the magnetotelluric instrument probe.

[0039] As a specific way, Figures 2 to 4As shown, the support structure 5 includes a sleeve rod 501, a left connecting rod unit, a right connecting rod unit, a movable rod 504, a support seat 505, a Z-shaped pressure rod 506, a pedal 507, a first spring 508 and a limiting structure 509;

[0040] A sleeve rod 501 in a vertical direction is fixedly installed at the bottom of the connecting seat 3; a cavity is provided inside the sleeve rod 501, and a first spring 508 is provided at the top of the cavity;

[0041] The top end of the movable rod 504 is inserted into the cavity and abuts against the bottom of the first spring 508; the movable rod 504 can slide up and down relative to the sleeve rod 501 to achieve the extension or retraction function; a limiting structure 509 is installed between the movable rod 504 and the sleeve rod 501, which is used to fix the position between the movable rod 504 and the sleeve rod 501 when the movable rod 504 slides into place; the bottom end of the movable rod 504 is fixedly installed with a support seat 505;

[0042] The left connecting rod unit and the right connecting rod unit are installed symmetrically on the left and right, and both include a connecting plate 502 and an L-shaped plate 503; the top end of the connecting plate 502 is hinged to the side wall of the sleeve rod 501; the bottom end of the connecting plate 502 is hinged to one end of the L-shaped plate 503; the bending point of the L-shaped plate 503 is hinged to the side wall of the movable rod 504; the other end of the L-shaped plate 503 is fixed to the pedal 507; the side of the connecting plate 502 is fixed to one end of the Z-shaped pressure rod 506.

[0043] A plurality of equally spaced slots 510 are respectively arranged on both sides of the cavity of the sleeve rod 501; through cavities are respectively arranged on both sides of the top of the movable rod 504, and a retractable limiting structure 509 is installed inside each through cavity; the limiting structure 509 includes a telescopic rod 5091, a second spring 5092 and a protrusion 5093; the telescopic rod 5091 is horizontally arranged inside the through cavity, one end of which is fixed to the inner wall of the through cavity, and the other end of which is fixedly installed with a protrusion 5093, and the outer wall of the telescopic rod 5091 is wound around the second spring 5092; when the movable rod 504 slides into place relative to the sleeve rod 501, the protrusion 5093 is embedded in the slot 510, so that the position of the movable rod 504 relative to the sleeve rod 501 is fixed. The bottom of the support seat 505 is fixedly connected to the anti-slip pad.

[0044] The working principle of the support structure 5 is:

[0045] The sleeve rod 501 and the bottom of the connecting seat 3 are fixed, so the sleeve rod 501 and the upper workbench 1 and other components form a whole; the movable rod 504 and the sleeve rod 501 are slidably connected up and down;

[0046] When stable support on the ground is required, the pedal 507 is stepped on downward. During the downward movement of the pedal 507, the L-shaped plate 503 fixedly connected to the pedal 507 is driven to rotate around the bending point of the L-shaped plate 503; at the same time, since the bending point of the L-shaped plate 503 and the movable rod 504 have a hinge point, the force is transmitted to the movable rod 504, causing the movable rod 504 to move downward, thereby extending downward relative to the sleeve rod 501; when the movable rod 504 moves downward, it drives the support seat 505 to move downward, and the support seat 505 moves down to abut against the ground; continue to push and step on the pedal 507, and the universal wheel 4 and the workbench and other components above the universal wheel 4 are propped up as a whole through the reaction force between the support seat 505 and the ground, so that the universal wheel 4 is separated from the ground; thereby, the universal wheel 4 is separated from the ground and the support seat 505 is stably supported on the ground; when the movable rod 504 moves downward into place, the support state is maintained by the limiting structure 509;

[0047] When the support seat 505 needs to be retracted, the Z-shaped pressure rod 506 is pressed downward, and the Z-shaped pressure rod 506 drives the connecting plate 502 to rotate around the hinge point at its top; when the connecting plate 502 rotates, it drives the L-shaped plate 503 hinged to it to rotate around the bending point of the L-shaped plate 503, thereby transmitting the force to the movable rod 504 hinged to the L-shaped plate 503, so that the movable rod 504 is retracted upward into the cavity of the sleeve rod 501, so that the support seat 505 is off the ground and the universal wheel 4 is on the ground.

[0048] Therefore, the switching between the universal wheel 4 and the supporting structure 5 can be achieved by stepping on the universal wheel 4, which saves time and effort and improves work efficiency.

[0049] The clamping structure 7 provided in the present application is used to clamp the magnetotelluric instrument probe in an elastic manner. Figure 6 As shown, the clamping structure 7 on each side includes a fixing plate 701, a bolt 702, a limiting rod 703, a third spring 704 and a clamping plate 705;

[0050] A fixing plate 701 is installed on the side of the fixing seat 6, and the bottom of the fixing plate 701 is fixed to the workbench 1; a clamping plate 705 is provided on one side of the fixing plate 701 close to the fixing seat 6;

[0051] A threaded hole is provided at the center of the fixing plate 701, one end of the bolt 702 is located outside the fixing plate 701, and the other end is threaded through the threaded hole and movably connected with the center of the clamping plate 705; when the bolt 702 rotates, the clamping plate 705 is pushed closer to or away from the fixing seat 6;

[0052] The fixing plate 701 has smooth through holes on both sides of the threaded hole; one end of the limiting rod 703 passes through the smooth through hole of the fixing plate 701 and is fixedly connected to the clamping plate 705; the outer wall of the limiting rod 703 is sleeved with the third spring 704. Specifically, the outer wall of the limiting rod 703, and the area between the fixing plate 701 and the clamping plate 705, is sleeved with the third spring 704, so that the two ends of the third spring 704 abut against the fixing plate 701 and the clamping plate 705, respectively.

[0053] Its working principle is: when it is necessary to clamp the magnetotelluric instrument probe, rotate the bolt 702. Since the position of the fixing plate 701 is fixed, the end of the bolt 702 close to the fixing seat 6 continues to move forward, thereby pushing the clamping plate 705 to move toward the fixing seat 6, and then clamping the magnetotelluric instrument probe; and, during the clamping movement of the clamping plate 705, the limit rods 703 on both sides ensure the stability of the movement of the clamping plate 705; the setting of the third spring 704 realizes the buffering effect of the clamping process.

[0054] The following describes an embodiment:

[0055] Embodiment 1:

[0056] like Figures 1 to 5 As shown, this embodiment proposes a special bracket for a magnetotelluric instrument probe, including a workbench 1, a connecting seat 3 and a clamping structure 7. The top center of the workbench 1 is fixedly connected to a fixing seat 6, and the four corners of the bottom of the workbench 1 are fixedly connected to a supporting column 2. There are four connecting seats 3, and the four connecting seats 3 are respectively arranged at the bottom of the supporting column 2. Universal wheels 4 are respectively provided on the opposite sides of the bottom of the four connecting seats 3, and supporting structures 5 are respectively provided on the separated sides of the bottom of the four connecting seats 3. There are two groups of clamping structures 7, and the two groups of clamping structures 7 are respectively arranged on both sides of the fixing seat 6.

[0057] Embodiment 2:

[0058] The scheme in Example 1 is further introduced below in combination with the specific working method, as described below for details. Each group of supporting structures 5 includes a sleeve rod 501 and a movable rod 504. The top of the sleeve rod 501 is fixedly connected to the connecting seat 3, and the top two sides of the sleeve rod 501 are respectively hinged to the connecting plates 502. The sleeve rod 501 is provided with a cavity inside, and a first spring 508 is provided at the top of the cavity. A number of equidistant slots 510 are respectively provided on both sides of the cavity. The top of the movable rod 504 is inserted into the cavity, and through cavities are respectively provided on both sides of the top of the movable rod 504. Retractable limiting structures 509 are respectively provided inside the two through cavities. The bottom two sides of the movable rod 504 are respectively hinged to L-shaped plates 503, and the bottom end of the movable rod 504 is fixedly connected to the support seat 505.

[0059] Embodiment 3:

[0060] The scheme in Example 2 is further introduced below in combination with the specific working method, as described below for details: the two connecting plates 502 are fixedly connected to the Z-shaped pressure rod 506 on both sides close to the universal wheel 4, the bottoms of the two connecting plates 502 are respectively hinged to the L-shaped plates 503, and the ends of the two L-shaped plates 503 away from the universal wheel 4 are respectively fixedly connected to the pedals 507, one end of the first spring 508 is fixedly connected to the inner wall of the cavity, and the other end abuts the movable rod 504, the bottom of the support seat 505 is fixedly connected to the anti-slip pad, each group of limiting structures 509 includes a telescopic rod 5091, a second spring 5092 and a protrusion 5093, one end of the telescopic rod 5091 is respectively fixedly connected to the inner wall of the cavity, and the other end is respectively fixedly connected to the protrusion 5093, and the outer wall of the telescopic rod 5091 is respectively wrapped around the second spring 5092.

[0061] When support is needed, one only needs to step on the pedal 507 downwards, thereby pushing the movable rod 504 to push the support seat 505 downwards, and the extension and retraction amount of the movable rod 504 is fixed through the limiting structure 509. If the support seat 505 needs to be retracted, one only needs to step on the Z-shaped pressure rod 506 downwards, thereby pushing the movable rod 504 to retract upwards into the cavity. There is no need for the staff to bend over to rotate the bolts, which reduces lumbar muscle strain, ensures the health of the staff, and improves work efficiency.

[0062] Embodiment 4:

[0063] The scheme in Example 3 is further introduced below in combination with the specific working method, as described below for details: each group of clamping structures 7 includes a fixed plate 701, a bolt 702, a limiting rod 703, a third spring 704 and a clamping plate 705, the bottom of the fixed plate 701 is fixedly connected to the workbench 1, a bolt 702 is passed through the inside of the fixed plate 701, one end of the bolt 702 passes through the fixed plate 701 and is movably connected to the clamping plate 705, limiting rods 703 are respectively provided on both sides of the bolt 702, the outer walls of the two limiting rods 703 are respectively sleeved with the third springs 704, the bolt 702 is threadedly connected to the fixed plate 701, one end of the two limiting rods 703 passes through the fixed plate 701 and is fixedly connected to the clamping plate 705, one end of the two third springs 704 respectively abuts the clamping plate 705, and the other end abuts the fixed plate 701.

[0064] Through the two sets of clamping structures 7, electromagnetic instrument probes of different sizes can be centered and clamped, thereby ensuring the stability of the probe centering clamping, ensuring the accuracy of data reading, and improving operation efficiency.

[0065] The utility model provides a special bracket for magnetotelluric instrument probe, which has the following advantages:

[0066] 1. The utility model provides a special bracket for the probe of the magnetotelluric instrument. When support is needed, it is only necessary to step on the pedal downwards, so that the movable rod pushes the support seat to move downwards, and the extension and contraction amount of the movable rod is fixed by the limiting structure; if the support seat needs to be retracted, it is only necessary to step on the Z-shaped pressure rod downwards, so as to push the movable rod to retract upward into the cavity; therefore, the support seat supports the ground or retracts into the cavity to switch to the process of moving wheels walking through the stepping operation. The whole process only needs the staff to step on the pedal to complete, which is convenient for users to use and does not require the staff to bend over to rotate bolts and other operations, thereby reducing lumbar muscle strain, ensuring the health of the staff and improving work efficiency.

[0067] 2. The utility model provides a special bracket for a magnetotelluric instrument probe, which realizes the centering clamping of electromagnetic instrument probes of different sizes through two sets of clamping structures, thereby ensuring the stability of the probe centering clamping, ensuring the accuracy of data reading, and improving operating efficiency.

[0068] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0069] 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.

[0070] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A special bracket for a magnetotelluric instrument probe, characterized in that: It comprises a workbench (1), a support column (2), a connecting seat (3), a universal wheel (4), a supporting structure (5), a fixing seat (6) and a clamping structure (7); The fixing seat (6) is fixedly mounted at the top center of the workbench (1), and the clamping structures (7) are symmetrically mounted on both sides of the fixing seat (6); the supporting columns (2) are fixedly mounted at the four corners of the bottom of the workbench (1); the connecting seat (3) is fixedly mounted at the bottom of each supporting column (2); the universal wheel (4) is mounted on the inner side of the bottom of the connecting seat (3), and the supporting structure (5) is mounted on the outer side of the bottom of the connecting seat (3); the supporting structure (5) is a stepping structure.

2. A special bracket for a magnetotelluric instrument probe according to claim 1, characterized in that: The support structure (5) comprises a sleeve rod (501), a left connecting rod unit, a right connecting rod unit, a movable rod (504), a support seat (505), a Z-shaped pressure rod (506), a pedal (507), a first spring (508) and a limiting structure (509); The bottom of the connecting seat (3) is fixedly mounted with the sleeve rod (501) in a vertical direction; a cavity is provided inside the sleeve rod (501), and the first spring (508) is provided at the top of the cavity; The top end of the movable rod (504) is inserted into the cavity and abuts against the bottom of the first spring (508); the movable rod (504) can slide up and down relative to the sleeve rod (501) to achieve an extension or retraction function; the limiting structure (509) is installed between the movable rod (504) and the sleeve rod (501) to achieve the fixed position between the movable rod (504) and the sleeve rod (501) when the movable rod (504) slides into place; the supporting seat (505) is fixedly installed at the bottom end of the movable rod (504); The left connecting rod unit and the right connecting rod unit are installed symmetrically on the left and right, and both include a connecting plate (502) and an L-shaped plate (503); the top end of the connecting plate (502) is hinged to the side wall of the sleeve rod (501); the bottom end of the connecting plate (502) is hinged to one end of the L-shaped plate (503); the bending point of the L-shaped plate (503) is hinged to the side wall of the movable rod (504); the other end of the L-shaped plate (503) is fixed to the pedal (507); the side surface of the connecting plate (502) is fixed to one end of the Z-shaped pressure rod (506).

3. A special bracket for a magnetotelluric instrument probe according to claim 2, characterized in that: A plurality of slots (510) with equal distances are respectively provided on both sides of the cavity of the sleeve rod (501); Through cavities are respectively provided on both sides of the top of the movable rod (504), and a retractable limiting structure (509) is installed inside each of the through cavities; the limiting structure (509) comprises a telescopic rod (5091), a second spring (5092) and a convex block (5093); the telescopic rod (5091) is horizontally arranged inside the through cavity, one end of which is fixed to the inner wall of the through cavity, and the other end of which is fixedly installed with the convex block (5093); the outer wall of the telescopic rod (5091) is wound around the second spring (5092); When the movable rod (504) slides into place relative to the sleeve rod (501), the protrusion (5093) is embedded in the slot (510).

4. A special bracket for a magnetotelluric instrument probe according to claim 2, characterized in that: The bottom of the support seat (505) is fixedly connected to an anti-slip pad.

5. The special bracket for magnetotelluric instrument probe according to claim 1, characterized in that: The clamping structure (7) on each side comprises a fixing plate (701), a bolt (702), a limiting rod (703), a spring three (704) and a clamping plate (705); The fixing plate (701) is installed on the side of the fixing seat (6), and the bottom of the fixing plate (701) is fixed to the workbench (1); the clamping plate (705) is arranged on one side of the fixing plate (701) close to the fixing seat (6); A threaded hole is provided at the center of the fixing plate (701); one end of the bolt (702) is located outside the fixing plate (701); the other end is threadedly passed through the threaded hole and is movably connected to the center of the clamping plate (705); when the bolt (702) rotates, the clamping plate (705) is pushed closer to or away from the fixing seat (6); The fixing plate (701) is provided with smooth through holes on both sides of the threaded hole; one end of the limiting rod (703) passes through the smooth through hole of the fixing plate (701) and is fixedly connected to the clamping plate (705); the outer wall of the limiting rod (703) is sleeved with the spring three (704).

6. A special bracket for magnetotelluric instrument probe according to claim 5, characterized in that: The outer wall of the limiting rod (703) and the spring three (704) are sleeved in the area between the fixing plate (701) and the clamping plate (705), so that the two ends of the spring three (704) respectively abut against the fixing plate (701) and the clamping plate (705).

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