CN-224216095-U - Calibrating device of magnetic compass

Abstract

The utility model belongs to the technical field of calibration, and discloses a calibration device of a magnetic compass, which comprises a calibration mechanism, a magnet assembly and a magnetic field adjusting mechanism, wherein the calibration mechanism comprises a rotating platform for driving the magnetic compass to horizontally rotate, the magnet assembly comprises an upright guide rail, the upright guide rail is provided with four groups and is respectively positioned at the periphery of the rotating platform, and magnet blocks capable of sliding along the vertical direction of the upright guide rail are arranged on the upright guide rail. Therefore, the self-difference of the magnetic compass can be corrected in a targeted manner, the accuracy of calibration is improved, the sliding adjustment mode is more convenient to operate, the time and labor cost required by calibration are reduced, and the working efficiency is improved.

Inventors

• Pei Jingtao

Assignees

• 青岛港湾职业技术学院

Dates

Publication Date

20260508

Application Date

20250314

Claims (8)

1. 1. A calibration device for a magnetic compass, comprising: The calibration mechanism comprises a rotary platform (1) for driving the magnetic compass to horizontally rotate, and an angle ring (2) for indicating an angle is arranged on the outer side of the rotary platform (1); The magnet assembly (4) comprises upright guide rails (41), the upright guide rails (41) are provided with four groups, the four groups are respectively positioned around the rotary platform (1), and the upright guide rails (41) are provided with magnet blocks (43) capable of sliding along the vertical direction of the upright guide rails (41); The iron ball assembly (3) comprises an annular guide rail (34) and four groups of distance adjusting rods (32) capable of sliding along the path of the annular guide rail (34), and each group of distance adjusting rods (32) is provided with iron balls (31) capable of sliding along the distance adjusting rods (32).
2. 2. The calibrating device of the magnetic compass of claim 1, wherein a supporting ring (14) is arranged below the rotating platform (1), an annular groove (15) is formed in the upper surface of the supporting ring (14), a plurality of groups of universal balls (16) are arranged in the annular groove (15), one end of each universal ball (16) is fixedly connected with the rotating platform (1), and the spherical part of each universal ball (16) is contacted with the bottom of the annular groove (15).
3. 3. The calibrating device of the magnetic compass is characterized in that a bottom plate (5) is arranged below the rotating platform (1), a stepping motor (11) is arranged in the middle of the upper surface of the bottom plate (5), an output shaft of the stepping motor (11) is connected with a transmission rod (13), the upper end of the transmission rod (13) is fixedly connected with the rotating platform (1), a group of inner supporting rods (12) are respectively fixedly connected with the periphery below the supporting ring (14), and the lower end of each inner supporting rod (12) is fixedly connected with the bottom plate (5).
4. 4. A calibrating device for a magnetic compass according to claim 3, wherein the vertical guide rail (41) is slidably provided with a vertical sliding block (44), the magnet block (43) is fixed on one side of the vertical sliding block (44) close to the rotating platform (1), a positioning bolt (45) is connected to the middle of the magnet block (43) in a threaded manner, and the tail end of the positioning bolt (45) penetrates through the vertical sliding block (44).
5. 5. The calibrating device of the magnetic compass of claim 4, wherein a dovetail groove is formed below the vertical guide rail (41), a bottom guide strip (42) is arranged in the dovetail groove, the shape of the bottom guide strip (42) is matched with that of the dovetail groove, and the bottom guide strip (42) is fixedly connected with the bottom plate (5).
6. 6. A calibrating device for a magnetic compass according to claim 3, wherein the inner side of the annular guide rail (34) is fixedly connected with four groups of outer support rods (36), and the lower ends of the outer support rods (36) are fixedly connected with the bottom plate (5).
7. 7. A magnetic compass calibrating apparatus according to claim 6, wherein the annular guide rail (34) is slidably provided with four sets of guide rail sliding blocks (35), and the distance adjusting rod (32) fixes one side of the guide rail sliding blocks (35) far away from the annular guide rail (34).
8. 8. The calibrating device of the magnetic compass of claim 6, wherein the distance adjusting rod (32) is sleeved with a traversing slide block (33) in a sliding manner, the soft iron ball (31) is positioned above the traversing slide block (33), the soft iron ball (31) is fixedly connected with the traversing slide block (33) through a connecting rod, and a yielding port (46) is formed in a position, corresponding to the distance adjusting rod (32), of the vertical guide rail (41).

Description

Calibrating device of magnetic compass Technical Field The utility model belongs to the technical field of calibration, and particularly relates to a calibration device for a magnetic compass. Background In the navigation field, the magnetic compass is used as a basic navigation instrument and plays a key role in the safe navigation of ships. The earth is a large magnet, and the ship has various magnetic substances, which can cause the magnetic compass to generate self-difference, so that the magnetic compass is very necessary to be calibrated, and the purpose of the magnetic compass is to eliminate or reduce the self-difference, so that the magnetic compass accurately indicates the direction and guides the correct heading for the ship. However, when the current magnetic compass is calibrated, the action intensity of the magnetic field is not convenient to flexibly adjust according to the self-difference condition of the magnetic compass when the magnetic compass rotates in different directions. In the actual calibration process, the complex self-difference generated by the magnetic compass at different angles can only adopt a relatively fixed calibration mode, so that the self-difference correction requirement under each angle is difficult to be precisely matched, the calibration precision is low, the accuracy of the direction indicated by the magnetic compass is also greatly reduced, and the navigation deviation is easily caused in scenes with higher requirements on the direction precision, such as navigation, and potential safety hazards are brought. In view of the above, the present application provides a calibration device for magnetic compass to solve the above problems. Disclosure of utility model Aiming at the defects existing in the prior art, the utility model aims to provide the calibrating device for the magnetic compass, by designing the magnet assembly, when the magnetic compass rotates on the rotating platform, the peripheral magnet blocks can slide up and down along the vertical guide rail to adjust the height, and the acting strength of the magnetic field between the magnet blocks and the magnetic compass can be adjusted according to the self-difference condition when the magnetic compass rotates to different directions on the rotating platform. Therefore, the self-difference of the magnetic compass can be corrected in a targeted manner, the accuracy of calibration is improved, the sliding adjustment mode is more convenient to operate, the time and labor cost required by calibration are reduced, and the working efficiency is improved. Solving the problems set forth in the background art. The application adopts the following technical scheme for realizing the purposes: The calibrating device of the magnetic compass comprises a calibrating mechanism, a magnet assembly and an iron ball assembly, wherein the calibrating mechanism comprises a rotating platform used for driving the magnetic compass to horizontally rotate, an angle ring used for indicating angles is arranged on the outer side of the rotating platform, the magnet assembly comprises upright guide rails, the upright guide rails are provided with four groups and are respectively positioned on the periphery of the rotating platform, magnet blocks capable of sliding along the upright guide rails in the vertical direction are arranged on the upright guide rails, the iron ball assembly comprises an annular guide rail and four groups of distance adjusting rods capable of sliding along the path of the annular guide rail, and each group of distance adjusting rods is provided with iron balls capable of sliding along the distance adjusting rods. As a preferred implementation mode, a supporting ring is arranged below the rotary platform, an annular groove is formed in the upper surface of the supporting ring, a plurality of groups of universal balls are arranged in the annular groove, one end of each universal ball is fixedly connected with the rotary platform, and the spherical part of each universal ball is contacted with the bottom of the annular groove. As a preferred implementation mode, the bottom plate is arranged below the rotary platform, the stepping motor is arranged in the middle of the upper surface of the bottom plate, the output shaft of the stepping motor is connected with the transmission rod, the upper end of the transmission rod is fixedly connected with the rotary platform, a group of inner supporting rods are respectively fixedly connected with the periphery of the lower part of the supporting ring, and the lower ends of the inner supporting rods are fixedly connected with the bottom plate. As a preferable implementation mode, the vertical guide rail is provided with a vertical sliding block in a sliding mode, the magnet block is fixed on one side, close to the rotating platform, of the vertical sliding block, a positioning bolt is connected with the middle of the magnet block in a threaded mode, and the tail end of the pos