Measuring device for geomagnetic field survey

Abstract

The utility model discloses a measuring device for geomagnetic field survey, which comprises a geomagnetic instrument probe connected with a geomagnetic instrument through a lead and a probe rod fixedly connected to the bottom of the geomagnetic instrument probe, and a non-magnetic horizontal guide and support mechanism is arranged below the probe rod; the non-magnetic horizontal guiding and supporting mechanism comprises an annular bottom plate. By arranging a series of structures, blind groove leveling can be conveniently and rapidly carried out, a probe rod can be inserted into the blind groove to vertically support the blind groove, people do not need to observe and judge the blind groove or adjust four corners one by one in a traditional mode, and use convenience and accuracy are improved; the four positioning insertion rods can be driven to be synchronously inserted into the ground for rooting, stable supporting and inclination prevention work, the supporting and inclination prevention stability during detection is improved, and in addition, by means of the mode that the multiple structures forming the support are made of non-magnetic materials such as ceramic and hard plastic, the stable use effect of avoiding magnetic interference while stable vertical supporting can be achieved can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of geomagnetic surveying technology, specifically a measuring device for geomagnetic field surveying. Background Technology

[0002] Magnetic exploration is a geophysical method that studies the geological structure and distribution patterns of mineral resources or other objects by observing and analyzing magnetic anomalies caused by differences in the magnetic properties of rocks, ores, or other objects. The magnetometer is a basic magnetic exploration instrument widely used in field geomagnetic surveys. It is connected to the probe by a wire and uses the probe rod to insert into the ground to conduct geomagnetic surveys. It is an instrument used to measure the strength and direction of the geomagnetic field.

[0003] Existing magnetometers used for field geomagnetic surveys require non-magnetic supports for their probes. Currently, wooden or hard plastic supports are used to vertically support the probe rods to avoid interfering with the magnetic survey work. However, this method has the following drawbacks.

[0004] 1. In field surveying, the ground is inevitably tilted and uneven, while the surveying work requires ensuring that the probe rod is vertical; personnel need to tediously observe and adjust the support, making it difficult to quickly and easily level and support the blind trench, resulting in unsatisfactory ease of use; 2. Directly placing it on the ground for support does not provide ideal anti-tilting stability; In view of this, this application proposes a measuring device for geomagnetic field surveying to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a measuring device for geomagnetic field surveys to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a measuring device for geomagnetic field survey, comprising a geomagnetic probe connected to a geomagnetic instrument via a wire and a probe rod fixedly connected to the bottom of the geomagnetic probe, wherein a non-magnetic horizontal guide support mechanism is provided below the probe rod;

[0007] The non-magnetic horizontal guide mechanism includes an annular base plate. A plastic circular box with an open bottom is fixedly connected to the top of the annular base plate. An adaptive blind-operation leveling component is embedded in the top of the plastic circular box. A vertical guide tube adapted to the probe is provided inside the adaptive blind-operation leveling component. The adaptive blind-operation leveling component is used to facilitate quick blind-operation leveling of the vertical guide tube. The horizontal, non-tilted vertical guide tube allows the probe to be inserted and provides vertical support to achieve horizontal support for the magnetometer probe, avoiding the impact of probe tilt on measurement accuracy.

[0008] The outer side of the plastic round box is provided with external threads and is threadedly connected to a four-point positioning component for positioning and anti-tipping; the four-point positioning component is used to simultaneously insert into the ground at four points at the bottom to stabilize and prevent tipping.

[0009] Preferably, the adaptive blind-operation leveling component includes a spherical sleeve embedded and fixed on the top of a plastic round box. The top and bottom of the spherical sleeve are both open. A ceramic universal ball made of ceramic material is movably fitted inside the spherical sleeve. The ceramic universal ball is fixedly fitted on a vertical guide tube. A ceramic counterweight block located below the ceramic universal ball is fixedly fitted on the outer bottom of the vertical guide tube. A lifting ring is provided inside the plastic round box. An anti-slip rubber ring is fixedly connected to the top of the lifting ring. The inner side of the top of the anti-slip rubber ring is pressed tightly against the bottom of the ceramic universal ball. Four elastic bands in a stretched state are fixedly connected in a ring at equal intervals between the top of the lifting ring and the top inner wall of the plastic round box. Four vertical guide rods are fixedly connected in a ring at equal intervals to the top of the lifting ring. The top ends of the four vertical guide rods all movably protrude to the top of the plastic round box and are fixedly connected to the same pressure ring. The spherical sleeve is located inside the pressure ring.

[0010] Preferably, the four-point positioning assembly includes an internally threaded sleeve screwed onto an external thread, with handles fixedly connected to the top of each of the four sides of the internally threaded sleeve, and a circular sleeve rotatably fitted onto the bottom of the outer side of the internally threaded sleeve. The bottom of the circular sleeve is fixedly connected to four positioning rods, each with a tapered bottom end, in an annular shape. An annular base plate is movably fitted onto the four positioning rods.

[0011] Preferably, the inner sleeve of the circular sleeve is fitted with two ceramic bearings, and the inner ring of the ceramic bearing is fixedly fitted with the outer side of the internal threaded sleeve.

[0012] Preferably, the top of the annular base plate has four circular through holes that are in movable contact with the outer side of the corresponding positioning rod.

[0013] Preferably, the annular base plate, spherical sleeve, pressure ring, vertical guide rod, lifting ring, and vertical guide tube are all made of non-magnetic hard plastic material.

[0014] Preferably, the internal threaded sleeve, handle, positioning pin, and round sleeve are all made of non-magnetic hard plastic.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. With the help of the set ring base plate, plastic round box, self-adaptive blind operation leveling component and vertical guide tube, the blind groove can be leveled conveniently and quickly by simply pressing and the probe can be inserted to support it vertically. There is no need for personnel to observe and judge or make complex adjustments one by one at the four corners, which improves the convenience and accuracy of use.

[0017] 2. Through the combination of the plastic round box, external thread and four-point positioning components, it can drive four positioning rods to be inserted into the ground synchronously to anchor and stabilize the anti-tilting work, thereby improving the anti-tilting stability and thus improving the support stability during testing;

[0018] 3. Furthermore, by utilizing the aforementioned supporting structures made of non-magnetic materials such as ceramics and hard plastics, magnetic interference can be avoided during measurement work. This achieves a stable use effect by providing stable vertical support while avoiding magnetic interference, thus meeting the requirements for interference-free use.

[0019] This utility model features a series of structures that facilitate quick and easy leveling of blind grooves and allow probes to be inserted for vertical support. This eliminates the need for personnel to observe and judge or make complex adjustments at each of the four corners, improving ease of use and accuracy. It also facilitates the simultaneous insertion of four positioning rods into the ground for stable support and anti-tilting work, enhancing the stability of the support during testing. Furthermore, by utilizing non-magnetic materials such as ceramics and hard plastics to form the supporting structure, it achieves stable vertical support while avoiding magnetic interference. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a measuring device for geomagnetic field surveying proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the front cross-sectional structure of a measuring device for geomagnetic field survey proposed in this utility model;

[0022] Figure 3 for Figure 2 A magnified structural diagram of part A in the diagram.

[0023] In the diagram: 1. Magnetometer probe; 101. Probe rod; 2. Annular base plate; 201. Plastic round box; 3. Spherical sleeve; 301. Ceramic universal ball; 302. Vertical guide tube; 303. Ceramic counterweight; 4. Lifting ring; 401. Anti-slip rubber ring; 402. Elastic band; 403. Vertical guide rod; 404. Pressure ring; 5. Internal threaded sleeve; 501. Round sleeve; 502. Positioning rod; 503. Ceramic bearing. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1 to 3 As shown, the measuring device for geomagnetic field survey proposed in this embodiment includes a geomagnetic probe 1 connected to a geomagnetic instrument via a wire and a probe rod 101 fixedly connected to the bottom of the geomagnetic probe 1. A non-magnetic horizontal guide support mechanism is provided below the probe rod 101.

[0026] The non-magnetic horizontal guide mechanism includes an annular base plate 2. A plastic circular box 201 with an open bottom is fixedly connected to the top of the annular base plate 2. An adaptive blind-operation leveling component is embedded in the top of the plastic circular box 201. A vertical guide tube 302 adapted to the probe rod 101 is set inside the adaptive blind-operation leveling component. The adaptive blind-operation leveling component is used to facilitate quick blind-operation leveling of the vertical guide tube 302. The horizontal and tilt-free vertical guide tube 302 allows the probe rod 101 to be inserted and vertically supported, so as to achieve horizontal support for the magnetometer probe 1 and avoid the measurement accuracy being affected by the tilt of the probe rod 101. The outer side of the plastic circular box 201 has an external thread and a four-point positioning component for positioning and anti-tilting is screwed on. The four-point positioning component is used to simultaneously insert into the ground at four points at the bottom for stable anti-tilting work.

[0027] Specifically, the adaptive blind-operation leveling component includes a spherical sleeve 3 embedded and fixed to the top of a plastic round box 201. The top of the plastic round box 201 has an embedded through hole for fixed connection with the outer side of the spherical sleeve 3. Both the top and bottom of the spherical sleeve 3 are open. A ceramic universal ball 301, made of ceramic material, is movably fitted inside the spherical sleeve 3. The ceramic universal ball 301 is fixedly fitted onto a vertical guide tube 302. A ceramic counterweight 303 located below the ceramic universal ball 301 is fixedly fitted onto the outer bottom of the vertical guide tube 302. A lifting ring 4 is provided inside the plastic round box 201. The top of the lifting ring 4... A non-slip rubber ring 401 is fixedly connected to the top of the plastic round box 201. The inner top of the non-slip rubber ring 401 is pressed tightly against the bottom of the ceramic universal ball 301. Four elastic bands 402 in a stretched state are fixedly connected in a ring at equal intervals between the top of the lifting ring 4 and the top inner wall of the plastic round box 201. Four vertical guide rods 403 are fixedly connected in a ring at equal intervals between the top of the lifting ring 4. The top ends of the four vertical guide rods 403 extend movably to the top of the plastic round box 201 and are fixedly connected to the same pressure ring 404. The top inner wall of the plastic round box 201 has four corresponding vertical guide rods. The vertical guide hole of the sliding sleeve on the outer side of rod 403 serves to allow the vertical guide rod 403 to pass through and guide its vertical sliding. The spherical sleeve 3 is located inside the pressure ring 404. The spherical sleeve 3, ceramic universal ball 301, ceramic counterweight 303, lifting ring 4, anti-slip rubber ring 401, elastic band 402, vertical guide rod 403 and pressure ring 404 work together. By pressing down on the pressure ring 404, it causes the lifting ring 4 to pull down through the vertical guide rod 403, stretching the four elastic bands 402. The lifting ring 4 causes the anti-slip rubber ring 401 to separate downward from the ceramic universal ball 301, releasing the ceramic universal ball 301. When the locking mechanism of 01 is tilted due to the tilt of the exploration location, the ceramic counterweight 303 automatically rotates downwards to a vertical position under its own weight, and drives the vertical guide tube 302 to rotate to a vertical position. The vertical guide tube 302 drives the ceramic universal ball 301 to rotate adaptively within the spherical sleeve 3, achieving the effect of convenient blind operation and adaptive rapid adjustment of the vertical guide tube 302. The probe rod 101 is inserted and vertically supported by the horizontal and tilt-free vertical guide tube 302, so as to achieve horizontal support for the magnetometer probe 1 and avoid the measurement accuracy being affected by the tilt of the probe rod 101.

[0028] Furthermore, the four-point positioning assembly includes an internal threaded sleeve 5 threaded onto an external thread. The threaded connection between the internal threaded sleeve 5 and the external thread facilitates rotation and vertical displacement of the internal threaded sleeve 5. Handles are fixedly connected to the top of each of the four sides of the internal threaded sleeve 5. A circular sleeve 501 is rotatably fitted onto the bottom outer side of the internal threaded sleeve 5. Two ceramic bearings 503 are fixedly fitted inside the circular sleeve 501. The inner rings of the ceramic bearings 503 are fixedly fitted onto the outer side of the internal threaded sleeve 5, enabling the rotational installation of the internal threaded sleeve 5. This rotational installation prevents the transmission of rotational torque to the circular sleeve 501 during rotation. The bottom of the circular sleeve 501 is annularly and equally spaced, with four anchors, each with a tapered bottom. The positioning rods 502 are movably mounted on the annular base plate 2. The top of the annular base plate 2 has four circular through holes that movably contact the outer side of the corresponding positioning rods 502, allowing the positioning rods 502 to pass through. The internal threaded sleeve 5, handle, circular sleeve 501, and positioning rods 502 are designed to work together. When a person steps on the annular base plate 2 and pulls the handle forward, the internal threaded sleeve 5 rotates forward. The internal threaded sleeve 5 rotates on the external thread and moves downward. At this time, the internal threaded sleeve 5 drives the circular sleeve 501 to move downward. The downward-moving circular sleeve 501 drives the four positioning rods 502, which have a conical bottom structure, to simultaneously insert into the ground for stable support and anti-tipping work, improving the stability of the support during testing.

[0029] Furthermore, the annular base plate 2, spherical sleeve 3, pressure ring 404, vertical guide rod 403, lifting ring 4, and vertical guide tube 302 are all made of non-magnetic hard plastic material, as are the internal thread sleeve 5, handle rod, positioning insert rod 502, and circular sleeve 501. By utilizing the above-mentioned supporting structures made of non-magnetic materials such as ceramic and hard plastic, magnetic interference is avoided during measurement work, achieving a stable use effect by avoiding magnetic interference while providing stable vertical support.

[0030] The usage method of this embodiment is as follows: When using the measuring device for geomagnetic field surveying, after placing it on the ground to be surveyed in the field, before inserting the probe rod 101 of the geomagnetic probe 1 into the vertical guide tube 302, first press down on the pressure ring 404, so that it drives the lifting ring 4 downward through the vertical guide rod 403 to stretch the four elastic bands 402 downward. The lifting ring 4 drives the anti-slip rubber ring 401 downward to separate from the ceramic universal ball 301, releasing the locking of the ceramic universal ball 301. When the overall structure tilts due to the tilt of the survey position during placement, under its own gravity, the ceramic counterweight 303 automatically rotates downward to vertical, and drives the vertical guide tube 302 to rotate to a vertical state. The vertical guide tube 302 drives the ceramic universal ball 301 to rotate downward to a vertical state. The ball 301 rotates adaptively within the spherical sleeve 3, enabling convenient and rapid blind adjustment of the vertical guide tube 302. Then, the pressure on the pressure ring 404 is released. At this time, the four elastic bands 402, which are in a stretched state, drive the lifting ring 4 to move upward. The lifting ring 4 drives the anti-slip rubber ring 401 to squeeze and lock the ceramic universal ball 301 upward. At this time, the probe 101 is inserted into the horizontal, non-tilted vertical guide tube 302 and vertically supported to achieve horizontal support for the magnetometer probe 1. This avoids the measurement accuracy being affected by the tilt of the probe 101, and achieves the effect of convenient and rapid blind slot leveling and support. There is no need for personnel to observe and judge or make complex adjustments one by one at the four corners, which improves the convenience and accuracy of use.

[0031] Personnel step on the annular base plate 2 and pull the handle forward to drive the internal threaded sleeve 5 to rotate forward. The internal threaded sleeve 5 rotates on the external thread and moves downward. At this time, the internal threaded sleeve 5 drives the circular sleeve 501 to move downward through the ceramic bearing 503. The circular sleeve 501 drives the four positioning rods 502 with tapered bottoms to be inserted into the ground simultaneously to provide stable support and prevent tilting. This achieves the effect of rooting and stabilizing support on the ground to prevent tilting, thereby improving the stability of the support during testing. In addition, personnel can connect the geomagnetic probe 1 to the geomagnetic instrument through wires to carry out testing. The technology of connecting the geomagnetic probe 1 to the geomagnetic instrument through wires for geomagnetic detection is a mature technology of existing equipment and will not be described in detail here.

[0032] After subsequent use, pulling the handle in the opposite direction will cause the internal threaded sleeve 5 to rotate and move upward. The internal threaded sleeve 5, through the round sleeve 501, will cause the four positioning rods 502 to separate from the ground, and the device can be removed. In addition, by using the above-mentioned supporting structures made of non-magnetic materials such as ceramic and hard plastic, magnetic interference can be avoided during measurement work, achieving a stable use effect by avoiding magnetic interference while providing stable vertical support.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A measuring device for geomagnetic field surveying, comprising a geomagnetic probe (1) connected to a geomagnetometer via a wire and a probe rod (101) fixedly connected to the bottom of the geomagnetic probe (1), characterized in that: A non-magnetic horizontal guide mechanism is provided below the probe rod (101); The non-magnetic horizontal guide mechanism includes an annular base plate (2), and a plastic round box (201) with an open bottom is fixedly connected to the top of the annular base plate (2). An adaptive blind operation leveling component is embedded in the top of the plastic round box (201), and a vertical guide tube (302) adapted to the probe rod (101) is provided inside the adaptive blind operation leveling component. The plastic round box (201) has an external thread on its outer side and is threaded with a four-point positioning component for positioning and preventing tilting.

2. The measuring device for geomagnetic field surveying according to claim 1, characterized in that: The adaptive blind-operation leveling component includes a spherical sleeve (3) embedded and fixed on the top of a plastic round box (201). The top and bottom of the spherical sleeve (3) are both open. A ceramic universal ball (301) made of ceramic material is movably fitted inside the spherical sleeve (3). The ceramic universal ball (301) is fixedly fitted on a vertical guide tube (302). A ceramic counterweight (303) located below the ceramic universal ball (301) is fixedly fitted on the outer bottom of the vertical guide tube (302). A lifting ring (4) is provided inside the plastic round box (201). The top of the lifting ring (4) is fixedly connected with anti-slip adhesive. The top inner side of the anti-slip rubber ring (401) is pressed tightly against the bottom of the ceramic universal ball (301). The top of the lifting ring (4) and the top inner wall of the plastic round box (201) are fixedly connected in a ring with four elastic bands (402) in a stretched state. The top of the lifting ring (4) is fixedly connected in a ring with four vertical guide rods (403) at equal intervals. The top of the four vertical guide rods (403) all extend to the top of the plastic round box (201) and are fixedly connected to the same pressure ring (404). The spherical sleeve (3) is located inside the pressure ring (404).

3. The measuring device for geomagnetic field survey according to claim 1, characterized in that: The four-point positioning assembly includes an internal thread sleeve (5) threaded onto an external thread. The top of each of the four sides of the internal thread sleeve (5) is fixedly connected with a handle. A circular sleeve (501) is rotatably fitted on the bottom of the outer side of the internal thread sleeve (5). The bottom of the circular sleeve (501) is fixedly connected with four positioning rods (502) with tapered ends in an annular shape at equal intervals. The annular base plate (2) is movably fitted on the four positioning rods (502).

4. A measuring device for geomagnetic field surveying according to claim 3, characterized in that: The inner sleeve (501) is fitted with two ceramic bearings (503), and the inner ring of the ceramic bearings (503) is fixedly fitted with the outer side of the inner threaded sleeve (5).

5. A measuring device for geomagnetic field surveying according to claim 3, characterized in that: The top of the annular base plate (2) has four circular through holes that are in contact with the outer side of the corresponding positioning rod (502).

6. A measuring device for geomagnetic field surveying according to claim 2, characterized in that: The annular base plate (2), spherical sleeve (3), pressure ring (404), vertical guide rod (403), lifting ring (4) and vertical guide tube (302) are all made of non-magnetic hard plastic material.

7. A measuring device for geomagnetic field surveying according to claim 3, characterized in that: The internal threaded sleeve (5), handle, positioning insert (502), and round sleeve (501) are all made of non-magnetic hard plastic.

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