Magnetic tensor measuring platform

Abstract

The utility model discloses a magnetic tensor measuring platform, which comprises a bedplate, four sliding chutes are annularly and uniformly arranged on the bedplate by taking the center of the bedplate as a circle center, each sliding chute is arranged towards the center of the bedplate along the edge of the bedplate, a sliding block is arranged in each sliding chute in a sliding manner, and a mounting seat for fixing a magnetic flux sensor is arranged at the top of each sliding block. The bottom of each sliding block is provided with a lead screw nut, the interior of each lead screw nut is in threaded connection with a lead screw, each lead screw is installed at the bottom of the platen through a bearing, when the handle is rotated, the handle can drive the lead screws to rotate, and the lead screws can drive the sliding blocks to slide in the sliding grooves through the lead screw nuts. And meanwhile, the screw rod can drive other screw rods to rotate through the bevel gear, so that the magnetic flux sensors fixed on other mounting seats can be driven to move in the direction close to or away from the center of the bedplate, and the base line distance can be adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of magnetic tensor measurement, especially to a magnetic tensor measurement platform. BACKGROUND

[0002] In order to measure the magnetic tensor, at least four magnetic sensors are needed, which are usually arranged in a certain geometric configuration, such as a tetrahedral structure. Each sensor measures the magnetic field vector at its location (i.e. the components of the magnetic field in the x, y, z directions). By comparing the magnetic field measurements between these sensors, the gradient of the magnetic field can be calculated, and thus the magnetic tensor. The four sensors are arranged in a tetrahedral structure, and the baseline distance is the length of the tetrahedral edge (i.e. the distance between two fluxgate sensors). This distance is crucial for measuring the gradient of the magnetic field, as it directly affects the sensitivity and resolution of the measurement. A shorter baseline distance is more sensitive to high-frequency magnetic field changes and is suitable for detecting small-scale or rapidly changing magnetic fields. A longer baseline distance is more sensitive to low-frequency magnetic field changes and is suitable for detecting large-scale or slowly changing magnetic fields. The choice of baseline distance also affects the signal-to-noise ratio. A longer baseline distance can generally improve the signal-to-noise ratio, but may reduce the sensitivity to small-scale magnetic field changes. The choice of baseline distance needs to be balanced according to the specific application scenario and measurement target. However, the fluxgate sensors on the existing magnetic tensor test platform are fixedly installed on the platform, so the baseline distance cannot be adjusted according to the specific application scenario and measurement target. SUMMARY

[0003] The utility model aims at overcoming the above technical defects, and provides a magnetic tensor measurement platform to solve the technical problem that the fluxgate sensors on the magnetic tensor test platform in the prior art are fixedly installed on the platform, so the baseline distance cannot be adjusted according to the specific application scenario and measurement target.

[0004] To achieve the above technical purpose, the technical scheme of the utility model provides a magnetic tensor measurement platform, which comprises a table plate, four sliding grooves are uniformly arranged in a ring shape around the center of the table plate, each sliding groove is arranged along the edge of the table plate towards the center of the table plate, a sliding block is slidably arranged in each sliding groove, an installation seat for fixing a magnetic flux sensor is installed on the top of each sliding block, a screw nut is installed at the bottom of each sliding block, a screw rod is threadedly connected in each screw nut, each screw rod is installed at the bottom of the table plate through a bearing, an umbrella tooth is installed at one end of each screw rod close to the center of the table plate, the umbrella teeth of adjacent two screw rods are meshed with each other, and a handle is installed at one end of one of the screw rods away from the center of the table plate.

[0005] Further, a clamping groove is arranged on both sides of the sliding block, and the sliding block is clamped on both sides of the sliding groove through the clamping grooves.

[0006] Further, the mounting base comprises a seat body mounted on the top of the sliding block, and a fixing groove is arranged on the top of the seat body.

[0007] Further, one end of the fixing groove is provided with a wire passing groove.

[0008] Further, one end of the fixing groove is provided with an expansion groove, and a fixing block is arranged in the expansion groove.

[0009] Further, the handle comprises a first rod body vertically mounted on one end of the lead screw away from the center of the platform and a second rod body vertically mounted on one end of the first rod body.

[0010] Further, the measuring platform further comprises a locking assembly for fixing or releasing the handle.

[0011] Further, the locking assembly comprises a fixing ring mounted on one side of the platform, a plurality of first tooth blocks are uniformly arranged in a ring shape around the center of the fixing ring on the side close to the second rod body, the second rod body is hollow inside and has an open structure at both ends, the locking assembly further comprises an expansion rod movably arranged in the second rod body, a second tooth block is arranged on one end of the expansion rod close to the fixing ring and matched with the first tooth block, and the second tooth block is connected with the second rod body through a second elastic element.

[0012] Further, a limiting block is mounted on one end of the expansion rod away from the fixing ring, and the locking assembly further comprises a positioning ring arranged between the second rod body and the limiting block, a first concave-convex structure is arranged on one side of the second rod body close to the positioning ring, and a second concave-convex structure matched with the first concave-convex structure is arranged on one side of the positioning ring close to the second rod body.

[0013] The beneficial effects of the present application include: the magnetic tensor measuring platform provided by the present application can drive the magnetic flux gate sensor fixed on the mounting base to move towards the center of the platform or away from the center of the platform when the handle is rotated, the magnetic flux sensor fixed on the other mounting base can be driven to move towards the center of the platform or away from the center of the platform through the bevel gear driven by the lead screw, and the baseline distance can be adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a magnetic tensor measuring platform structure schematic view of an embodiment of the present application;

[0015] Figure 2 is another state diagram of the magnetic tensor measuring platform of the embodiment of the present application;

[0016] Figure 3 is a mounting base structure schematic view of an embodiment of the present application;

[0017] Figure 4is the sectional view of the mounting seat of the embodiment of the utility model;

[0018] Figure 5 is Figure 2 the enlarged view of A of the utility model;

[0019] In the figure: 1, table board; 11, sliding groove; 2, sliding block; 21, clamping groove; 3, mounting seat; 31, seat body; 311, fixed slot; 312, wire passing groove; 313, telescopic groove; 32, fixed block; 33, first elastic member; 4, screw nut; 5, screw rod; 6, bearing; 7, umbrella tooth; 8, handle; 81, first rod body; 82, second rod body; 821, first concave-convex structure; 9, locking assembly; 91, fixed ring; 911, first tooth block; 92, telescopic rod; 921, second tooth block; 922, limiting block; 93, second elastic member; 94, positioning ring; 941, second concave-convex structure. DETAILED DESCRIPTION

[0020] In order to make the utility model purposes, technical scheme and advantages more clearly, the following is combined with the figure and embodiment, and the utility model is further detailed.The specific embodiments described herein are merely used to explain the utility model and not used to limit the utility model.

[0021] The utility model embodiment provides a kind of magnetic tensor measurement platform, as shown in Figures 1-2 Fig. 1, including table board 1, and four sliding grooves 11 are evenly arranged in ring shape with the center of table board 1 as the center, each sliding groove 11 is arranged along the edge of table board 1 to the center direction of table board 1, each sliding groove 11 is slidably provided with sliding block 2 inside, the top of each sliding block 2 is mounted with mounting seat 3 for fixing magnetic flux sensor, the bottom of each sliding block 2 is mounted with screw nut 4, each screw nut 4 is threadedly connected with screw rod 5 inside, each screw rod 5 is mounted on the bottom of table board 1 through bearing 6, the end of each screw rod 5 close to the center of table board 1 is mounted with umbrella tooth 7, the adjacent two umbrella teeth 7 are engaged with each other, the end of one of screw rod 5 away from the center of table board 1 is mounted with handle 8, when rotating handle 8, handle 8 can drive screw rod 5 to rotate, screw rod 5 can drive sliding block 2 to slide in sliding groove 11 through screw nut 4, so as to drive the magnetic flux sensor fixed on mounting seat 3 to move to the direction close to or away from the center of table board 1, while screw rod 5 can drive other screw rod 5 to rotate through umbrella tooth 7, i.e. can drive the magnetic flux sensor fixed on other mounting seat 3 to move to the direction close to or away from the center of table board 1, to adjust baseline distance.

[0022] It should be noted that the two sides of sliding block 2 are provided with clamping grooves 21, and the two sides of sliding block 2 are clamped in the two sides of sliding groove 11 through clamping grooves 21 respectively, to limit sliding block 2 in clamping groove 21.

[0023] In the embodiment, asFigures 3-4 As shown, the mounting seat 3 comprises a seat body 31 mounted on the top of the slider 2, the top of the seat body 31 is provided with a fixing groove 311, the magnetic flux gate sensor can be placed inside the fixing groove 311, one end of the fixing groove 311 is provided with a wire passing groove 312, the connecting wire on the magnetic flux gate sensor can pass through the wire passing groove 312 and extend out of the inside of the fixing groove 311, and one end of the fixing groove 311 is provided with an expansion groove 313, the inside of the expansion groove 313 is provided with a fixing block 32, the fixing block 32 is a spherical structure, the fixing block 32 and the inner end of the expansion groove 313 are connected through a first elastic piece 33, the first elastic piece 33 is a spring or a metal elastic sheet or other elastic articles, when the magnetic flux gate sensor is placed inside the fixing groove 311, the first elastic piece 33 is elastically deformed, and exerts pressure on the fixing block 32, so that the fixing block 32 tightly fixes the magnetic flux gate sensor in the fixing groove 311.

[0024] The handle 8 comprises a first rod body 81 vertically installed at the end of the lead screw 5 away from the center of the platform 1 and a second rod body 82 vertically installed at one end of the first rod body 81, and the first rod body 81 and the second rod body 82 form an L-shaped structure. The handle 8 with the above structure can conveniently rotate the lead screw 5. In this embodiment, the measuring platform further comprises a locking assembly 9 for fixing or loosening the handle 8. After adjustment, the handle 8 can be fixed by the locking assembly 9 to avoid the movement of the fluxgate sensor after adjustment. The locking assembly 9 comprises a fixing ring 91 installed on one side of the platform 1, and the lead screw 5 connected with the handle 8 is arranged at the center of the fixing ring 91. A plurality of first tooth blocks 911 are uniformly arranged in a ring shape around the center of the fixing ring 91 on the side close to the second rod body 82. The second rod body 82 is hollow inside and open at both ends. The locking assembly 9 further comprises a telescopic rod 92 movably arranged inside the second rod body 82. One end of the telescopic rod 92 entering the fixing ring 91 is provided with a second tooth block 921 matched with the first tooth block 911. The second tooth block 921 is connected with the second rod body 82 through a second elastic member 93. The second elastic member 93 is a spring or a metal spring or other elastic member, which can apply pressure to the second tooth block 921 to fix the second tooth block 921 between two adjacent first tooth blocks 911 after adjustment, so as to fix the handle 8. When one end of the telescopic rod 92 away from the fixing ring 91 is pulled, the second tooth block 921 is separated from the first tooth block 911, and the handle 8 is loosened. The end of the telescopic rod 92 away from the fixing ring 91 is provided with a limiting block 922. The locking assembly 9 further comprises a positioning ring 94 arranged between the second rod body 82 and the limiting block 922. The second rod body 82 close to the positioning ring 94 is provided with a first concave-convex structure 821. The concave and convex of the first concave-convex structure 821 are smoothly connected. The positioning ring 94 close to the second rod body 82 is provided with a second concave-convex structure 941 matched with the first concave-convex structure 821. The concave and convex of the second concave-convex structure 941 are smoothly connected. When the handle 8 is loosened, the positioning ring 94 is rotated to make the concave of the second concave-convex structure 941 opposite to the concave of the first concave-convex structure 821, and the convex of the second concave-convex structure 941 opposite to the convex of the first concave-convex structure 821, so as to separate the second tooth block 921 from the first tooth block 911. Without pulling the telescopic rod 92 to separate the second tooth block 921 from the first tooth block 911 when rotating the handle 8, the operation is more convenient.

[0025] The magnetic tensor measurement platform of the embodiment of the utility model, when rotating the handle 8, the handle 8 can drive the screw rod 5 to rotate, the screw rod 5 can drive the sliding block 2 to slide inside the sliding slot 11 through the screw rod nut 4, so as to drive the fixed magnetic flux gate sensor on the mounting seat 3 to move to the direction close to or away from the center of the platform 1, simultaneously the screw rod 5 can drive other screw rod 5 to rotate through the bevel gear 7, namely can drive the fixed magnetic flux sensor on other mounting seat 3 to move to the direction close to or away from the center of the platform 1, to adjust the baseline distance.

[0026] The specific embodiment of the utility model described above does not constitute the limitation to the protection scope of the utility model. Any various other corresponding changes and deformation made according to the technical concept of the utility model should be contained in the protection scope of the utility model claim.

Claims

1. A magnetic tensor measurement platform, characterized in that, The system includes a platform (1), on which four grooves (11) are uniformly arranged in a ring with the center of the platform (1). Each groove (11) is arranged along the edge of the platform (1) towards the center of the platform (1). A slider (2) is slidably arranged inside each groove (11). A mounting base (3) for fixing a magnetic flux sensor is installed on the top of each slider (2). A lead screw nut (4) is installed at the bottom of each slider (2). A lead screw (5) is threaded inside each lead screw nut (4). Each lead screw (5) is installed at the bottom of the platform (1) through a bearing (6). A bevel tooth (7) is installed at the end of each lead screw (5) near the center of the platform (1). Adjacent bevel teeth (7) mesh with each other. A handle (8) is installed at the end of one lead screw (5) away from the center of the platform (1).

2. The magnetic tensor measurement platform according to claim 1, characterized in that, The slider (2) has slots (21) on both sides, and the slider (2) is respectively secured to both sides of the slide groove (11) through the slots (21).

3. The magnetic tensor measurement platform according to claim 1, characterized in that, The mounting base (3) includes a seat (31) mounted on top of the slider (2), and the top of the seat (31) is provided with a fixing groove (311).

4. The magnetic tensor measurement platform according to claim 3, characterized in that, One end of the fixing groove (311) is provided with a wire passage groove (312).

5. The magnetic tensor measurement platform according to claim 4, characterized in that, The other end of the fixed groove (311) is provided with a telescopic groove (313), and a fixed block (32) is provided inside the telescopic groove (313). The fixed block (32) is connected to the inner end of the telescopic groove (313) by a first elastic member (33).

6. The magnetic tensor measurement platform according to claim 1, characterized in that, The handle (8) includes a first rod (81) vertically mounted on one end of the lead screw (5) away from the center of the platform (1) and a second rod (82) vertically mounted on one end of the first rod (81).

7. The magnetic tensor measurement platform according to claim 6, characterized in that, The measuring platform also includes a locking assembly (9) for securing or releasing the handle (8).

8. The magnetic tensor measurement platform according to claim 7, characterized in that, The locking assembly (9) includes a fixing ring (91) installed on one side of the platform (1). The fixing ring (91) has a plurality of first tooth blocks (911) evenly arranged in a ring with the center of the fixing ring (91) as the center on the side near the second rod (82). The second rod (82) is hollow inside and open at both ends. The locking assembly (9) also includes a telescopic rod (92) movably disposed inside the second rod (82). The telescopic rod (92) has a second tooth block (921) that cooperates with the first tooth block (911) at one end near the fixing ring (91). The second tooth block (921) is connected to the second rod (82) through a second elastic element (93).

9. The magnetic tensor measurement platform according to claim 8, characterized in that, The telescopic rod (92) is equipped with a limiting block (922) at the end away from the fixed ring (91). The locking assembly (9) also includes a positioning ring (94). The positioning ring (94) is located between the second rod body (82) and the limiting block (922). The second rod body (82) is provided with a first concave-convex structure (821) on the side near the positioning ring (94). The positioning ring (94) is provided with a second concave-convex structure (941) that cooperates with the first concave-convex structure (821) on the side near the second rod body (82).

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