Aviation full-axis magnetic gradient measuring device

Abstract

The utility model relates to the technical field of aeronautical survey, and discloses an aeronautical full-axis magnetic gradient measuring device which comprises a fixing frame, a fixing rod is fixedly installed at the bottom of the fixing frame, a first sliding groove is formed in the right portion of the fixing rod, a motor is fixedly installed in an inner cavity of the fixing rod, a threaded rod is fixedly installed on an output shaft of the motor, and a second sliding groove is formed in the right portion of the threaded rod. The threaded rod is movably sleeved with the first sliding groove, the threaded rod is movably sleeved with a sliding block, a first connecting block is fixedly installed on the right portion of the sliding block, a lifting plate is fixedly installed on the portion, located on the right side of the fixing rod, of the right portion of the first connecting block, and a swing rod is movably connected to the right portion of the lifting plate through a shaft. The height of the measuring instrument is adjusted through the motor, the angle of the measuring instrument is adjusted in cooperation with the hydraulic rods, the flexibility of the device is enhanced, magnetic gradient measurement data are more perfect, and the working efficiency of measuring equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of airborne measurement technology, and in particular to an airborne all-axis magnetic gradient measurement device. Background Technology

[0002] Airborne all-axis magnetic gradient measurement is a type of gradient measurement in airborne magnetic surveying. It uses four airborne magnetic measurement devices to measure the difference in the geomagnetic field between each other. The horizontal measurement device measures the horizontal component of the airborne magnetic gradient orthogonal to the survey line and the horizontal component along the survey line. The vertical measurement device measures the vertical component of the airborne magnetic gradient. Because it can measure all components of the airborne magnetic gradient, it has the advantages of both horizontal and vertical magnetic gradient measurement, which is conducive to complete directional information acquisition and has good data resolution capability.

[0003] In the prior art, when using an aircraft-mounted aeromagnetic measuring device for measurement, the vertical aeromagnetic measuring device is often fixed, which makes the measuring equipment less flexible and can only obtain measurement data at a single altitude difference. To collect different data, the aircraft needs to fly around repeatedly, which prolongs the time spent on data collection and affects the working efficiency of the measuring device. Therefore, in order to solve the above problems, this utility model proposes an airborne all-axis magnetic gradient measuring device. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an aviation-grade all-axis magnetic gradient measuring device. A motor drives a transmission mechanism to adjust the height of the measuring instrument, and two hydraulic rods work together to adjust the angle of the measuring instrument. This facilitates the measurement of magnetic data at different gradients, enhances the flexibility of the measuring equipment, provides more comprehensive magnetic gradient measurement data, avoids the need for multiple flights for measurement, and improves the working efficiency of the measuring equipment.

[0005] This utility model provides the following technical solution: an aviation full-axis magnetic gradient measuring device, including a fixed frame, a fixed rod fixedly installed at the bottom of the fixed frame, a groove on the right side of the fixed rod, a motor fixedly installed in the inner cavity of the fixed rod, a threaded rod fixedly installed on the output shaft of the motor, the threaded rod being movably sleeved in the groove, a slider being movably sleeved on the threaded rod, a connecting block fixedly installed on the right side of the slider, a lifting plate fixedly installed on the right side of the connecting block and to the right of the fixed rod, a swing rod movably connected to the right side of the lifting plate via a shaft, and hydraulic rods movably connected to the front and rear sides of the swing rod via shafts on the right side of the lifting plate, respectively. The telescopic ends of the two hydraulic rods are movably connected to the swing rod via shafts. The height of the measuring instrument is adjusted by the motor, and the angle of the measuring instrument is adjusted by the hydraulic rods, enhancing the flexibility of the device, making the magnetic gradient measurement data more complete, and promoting the improvement of the working efficiency of the measuring equipment.

[0006] Preferably, four connecting seats are fixedly installed at the three ends of the fixed frame and the right side of the swing rod. Each connecting seat has a second sliding groove, in which a second connecting block is engaged. The second connecting block has a groove on the side facing the second sliding groove, and a measuring instrument is fixedly installed on the side of the second connecting block away from the second sliding groove. By cooperating with the measuring instruments at the three ends of the fixed frame, the magnetic force data in the horizontal direction is measured. The measuring instrument on the right side of the fixed frame cooperates with the measuring instrument on the right side of the swing rod to measure the magnetic force data in the vertical direction.

[0007] Preferably, the connecting seat has a cavity, in which an electromagnet is fixedly installed. Springs are fixedly installed in the cavity on both sides of the electromagnet, and a movable plate is fixedly installed at the other end of each spring. A limit block is fixedly installed on the side of the movable plate away from the spring. The limit block is movably sleeved with the slide groove and engaged with the recess. By discharging the electromagnet, the engagement between the limit block and the recess can be flexibly adjusted to facilitate the quick assembly and disassembly of the measuring instrument.

[0008] Preferably, a connecting rod is fixedly installed on the upper part of the fixing frame. There are three connecting rods, and a connecting plate is fixedly installed between the top ends of the three connecting rods. By fixing the connecting plate to the bottom of the aircraft, the aircraft drives the measuring device to move quickly. During the flight of the aircraft, the measuring instrument is activated to carry out magnetic force measurement, which facilitates the expansion of the measuring instrument's measurement range.

[0009] Compared with the prior art, the advantages of this utility model are as follows:

[0010] 1. The motor drives the threaded rod to rotate, which in turn moves the slider up and down, thus adjusting the height of the measuring instrument on the right side of the swing arm. The two hydraulic rods on the right side of the lifting plate pull the swing arm to swing, allowing adjustment of the swing arm's angle in the horizontal direction. This facilitates the measuring instrument's detection of magnetic force in different directions, enhances the device's flexibility, and enables the device to measure magnetic force data at different gradients. This enriches the data obtained by the measuring equipment, making magnetic gradient measurements more accurate and avoiding the need for multiple flights to obtain ideal measurement results. This greatly improves the working efficiency of the measuring equipment.

[0011] 2. The moving plate is attracted by an electromagnet, which drives the limiting block to move, thus breaking the engagement between the limiting block and the groove. This facilitates the removal of the measuring instrument from the connecting seat. During installation, the connecting block two is re-engaged with the sliding groove two, and the electromagnet is de-energized. Under the action of the spring's elastic potential energy, the moving plate drives the limiting block to re-engage with the groove, thereby fixing the connecting block two. This achieves quick assembly and disassembly of the measuring instrument, avoiding the time-consuming installation process and improving the device's efficiency. It also facilitates subsequent maintenance by staff, enhancing the maintenance efficiency of the measuring instrument and ensuring the durability of the equipment. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the swing structure of the measuring instrument of this utility model;

[0014] Figure 3 This is a schematic diagram of the lifting structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the fixing structure of the measuring instrument of this utility model.

[0016] In the diagram: 1. Fixed frame; 2. Fixed rod; 3. Slide 1; 4. Motor; 5. Threaded rod; 6. Slider; 7. Connecting block 1; 8. Lifting plate; 9. Swing rod; 10. Hydraulic rod; 11. Connecting seat; 12. Slide 2; 13. Connecting block 2; 14. Groove; 15. Measuring instrument; 16. Cavity; 17. Electromagnet; 18. Spring; 19. Moving plate; 20. Limiting block; 21. Connecting rod; 22. Connecting plate. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-4An aviation-grade all-axis magnetic gradient measuring device includes a fixed frame 1, a fixed rod 2 fixedly mounted at the bottom of the fixed frame 1, a groove 3 on the right side of the fixed rod 2, a motor 4 fixedly mounted inside the fixed rod 2, a threaded rod 5 fixedly mounted on the output shaft of the motor 4, the threaded rod 5 being movably sleeved in the groove 3, a slider 6 movably sleeved on the threaded rod 5, a connecting block 7 fixedly mounted on the right side of the slider 6, a lifting plate 8 fixedly mounted on the right side of the connecting block 7 and to the right of the fixed rod 2, a swing rod 9 movably connected to the right side of the lifting plate 8 via a shaft, and hydraulic rods 10 movably connected to the front and rear sides of the right side of the lifting plate 8 and the swing rod 9 via shafts respectively. The telescopic ends of rod 10 are movably connected to the swing rod 9 via shafts. The starting motor 4 drives the threaded rod 5 to rotate. During the rotation of the threaded rod 5, the slider 6 moves up and down, thereby adjusting the height of the measuring instrument 15 to the right of the swing rod 9. The two telescopic ends of the hydraulic rods 10 on the right side of the lifting plate 8 pull the swing rod 9 to swing, which can adjust the angle of the swing rod 9 in the horizontal direction. This helps to enhance the flexibility of the device, facilitates the measurement of magnetic force data of different gradients, enriches the data obtained by the measuring equipment, makes the magnetic gradient measurement more complete, avoids the need for multiple flights of the aircraft to obtain ideal measurement results, and greatly improves the working efficiency of the measuring equipment.

[0019] Four connecting seats 11 are fixedly installed at the three ends of the fixed frame 1 and the right side of the swing rod 9. Each connecting seat 11 has a second sliding groove 12, in which a second connecting block 13 is engaged. A groove 14 is formed on the side of the second connecting block 13 facing the second sliding groove 12. A measuring instrument 15 is fixedly installed on the side of the second connecting block 13 away from the second sliding groove 12. A cavity 16 is formed in each connecting seat 11, and an electromagnet 17 is fixedly installed in the cavity 16. Springs 11 are fixedly installed in the cavity 16 on both sides of the electromagnet 17. 8. A movable plate 19 is fixedly installed at the other end of the spring 18. A limiting block 20 is fixedly installed on the side of the movable plate 19 away from the spring 18. The limiting block 20 is movably sleeved with the slide groove 12 and engaged with the groove 14. A connecting rod 21 is fixedly installed on the upper part of the fixing frame 1. There are three connecting rods 21. A connecting plate 22 is fixedly installed between the top ends of the three connecting rods 21. By fixing the connecting plate 22 to the bottom of the aircraft, the measuring instrument 15 is activated during the flight of the aircraft to carry out magnetic force measurement. The magnetic force is measured through the three endpoints of the measuring instrument 1 in the fixing frame 1. In coordination with 5, the magnetic force data in the horizontal direction is measured. The measuring instrument 15 on the right side of the fixed frame 1 and the measuring instrument 15 on the right side of the swing rod 9 work together to measure the magnetic force data in the vertical direction. During maintenance of the measuring instrument 15, the electromagnet 17 is energized to attract the moving plate 19. The spring 18 is compressed, generating elastic potential energy. The moving plate 19 drives the limiting block 20 to move into the cavity 16, causing the locking between the limiting block 20 and the groove 14 to disengage. Then, the connecting block 13 is moved upwards in the sliding groove 12. The movement involves removing the measuring instrument 15 from the connecting seat 11. During installation, the connecting block 13 is re-engaged with the sliding groove 12, and the electromagnet 17 is de-energized. Under the action of the elastic potential energy of the spring 18, the moving plate 19 drives the limiting block 20 to re-engage with the groove 14, thereby fixing the connecting block 13. This achieves quick disassembly and assembly of the measuring instrument 15, avoiding the time-consuming installation process and improving the efficiency of the device. It also facilitates the maintenance of the device by the staff, improves the maintenance efficiency of the measuring instrument, and ensures the durability of the equipment.

[0020] Working principle: By fixing the connecting plate 22 to the bottom of the aircraft, the measuring instrument 15 is activated during flight to perform magnetic force measurement. The measuring instruments 15 at the three endpoints of the fixed frame 1 measure the magnetic force data in the horizontal direction. The measuring instruments 15 on the right side of the fixed frame 1 and the measuring instrument 15 on the right side of the swing rod 9 work together to measure the magnetic force data in the vertical direction. The starting motor 4 drives the threaded rod 5 to rotate, which in turn moves the slider 6 up and down, thus adjusting the height of the measuring instrument 15 on the right side of the swing rod 9. The two hydraulic rods 10 on the right side of the lifting plate 8 pull the swing rod 9 to swing, adjusting its angle in the horizontal direction, facilitating the device's measurement. Magnetic force data of different gradients are measured. When maintaining the measuring instrument 15, the electromagnet 17 is energized to attract the moving plate 19. The spring 18 is compressed to generate elastic potential energy. The moving plate 19 drives the limiting block 20 to move into the cavity 16, so that the engagement between the limiting block 20 and the groove 14 is broken. Then the connecting block 13 is moved upward in the sliding groove 12, which drives the measuring instrument 15 to be removed from the connecting seat 11. During installation, the connecting block 13 is re-engaged with the sliding groove 12 and the electromagnet 17 is de-energized. Under the action of the elastic potential energy of the spring 18, the moving plate 19 drives the limiting block 20 to re-engage with the groove 14, thereby fixing the connecting block 13 and realizing the quick disassembly and assembly of the measuring instrument 15.

Claims

1. An airborne all-axis magnetic gradient measuring device, comprising a fixed frame (1), characterized in that: The bottom of the fixed frame (1) is fixedly installed with a fixed rod (2). The right side of the fixed rod (2) is provided with a sliding groove (3). The inner cavity of the fixed rod (2) is fixedly installed with a motor (4). The output shaft of the motor (4) is fixedly installed with a threaded rod (5). The threaded rod (5) is movably sleeved in the sliding groove (3). The threaded rod (5) is movably sleeved with a slider (6). The right side of the slider (6) is fixedly installed with a connecting block (7). The right side of the connecting block (7) and located to the right of the fixed rod (2) is fixedly installed with a lifting plate (8). The right side of the lifting plate (8) is movably connected with a swing rod (9) through a shaft. The right side of the lifting plate (8) and located on the front and rear sides of the swing rod (9) are respectively movably connected with hydraulic rods (10) through shafts. The telescopic ends of the two hydraulic rods (10) are respectively movably connected to the swing rod (9) through shafts.

2. The airborne all-axis magnetic gradient measuring device according to claim 1, characterized in that: The fixed frame (1) has connecting seats (11) fixedly installed at its three ends and on the right side of the swing rod (9). There are four connecting seats (11). The connecting seats (11) have a second sliding groove (12). A second connecting block (13) is engaged in the second sliding groove (12). The second connecting block (13) has a groove (14) on the side facing the second sliding groove (12). A measuring instrument (15) is fixedly installed on the side of the second connecting block (13) away from the second sliding groove (12).

3. The aircraft-mounted all-axis magnetic gradient measuring device according to claim 2, characterized in that: The connecting seat (11) has a cavity (16) and an electromagnet (17) is fixedly installed in the cavity (16). Springs (18) are fixedly installed in the cavity (16) on both sides of the electromagnet (17). A movable plate (19) is fixedly installed at the other end of the spring (18). A limit block (20) is fixedly installed on the side of the movable plate (19) away from the spring (18). The limit block (20) is movably connected to the slide groove (12) and engaged with the groove (14).

4. The airborne all-axis magnetic gradient measuring device according to claim 1, characterized in that: The upper part of the fixing frame (1) is fixedly installed with connecting rods (21), and there are three connecting rods (21). A connecting plate (22) is fixedly installed between the top ends of the three connecting rods (21).

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