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True bearing magnetic compass

A magnetic compass and azimuth technology, which is applied to compass, measuring device, surveying and navigation, etc., can solve the problems of inconsistency, inconvenience, magnetic compass inaccurate orientation and accurate azimuth determination, etc., and achieve simple structure, convenient use and precise effect

Inactive Publication Date: 2013-08-07
刘雁春 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, what is needed in daily work and life is the direction of the true North Pole and the true bearing, so the existing magnetic compass cannot accurately orient and accurately determine the bearing
In addition, due to the heterogeneity and motion characteristics of the earth, the magnetic declination angles in different regions on the earth are different (note: the maximum magnetic declination angle in our country can reach 11 degrees) and change slowly with time. The magnetic declination of the area cannot be corrected and calibrated on the existing magnetic compass. Users can only add and subtract the direction and azimuth readings of the magnetic compass afterwards, which is very inconvenient

Method used

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Examples

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Effect test

Embodiment 1

[0022] Such as figure 1 , 2 Show: as prior art, useful stainless steel or engineering plastics etc. make the top cover transparent cylindrical case 1, in order to seal and be easy to open, preferably adopt threaded connection between transparent top cover and cylindrical case 1, in cylindrical case The body 1 is provided with a columnar magnetic compass floating body 2, the space between the magnetic compass floating body 2 and the cylindrical shell 1 is filled with liquid, a magnetic bar 3 is placed inside the magnetic compass floating body 2, and the upper surface of the magnetic compass floating body 2 is marked with magnetic north The pointing line 5 is different from the prior art: the upper surface of the magnetic compass floating body 2 is covered with a circular azimuth dial 6 that can float and rotate with the magnetic compass floating body 2 and can rotate relatively. There are azimuth reticle line 7 and true north pointing line 8 pointing to 0 degrees or 360 degree...

Embodiment 2

[0025] Such as image 3 , 4 Shown: the basic structure is the same as in embodiment 1, and the difference from embodiment 1 is: the upper surface of the magnetic compass floating body 2 is fixedly connected with a fixed disk 4 marked with a magnetic north pointing line 5, and the fixed disk 4 is fixed on the magnetic compass floating body 2 On the outer ring on the upper surface, the circular azimuth dial 6 is sleeved in the outer ring.

[0026] Working process is with embodiment 1.

Embodiment 3

[0028] Such as Figure 5 Shown: the basic structure is the same as that of embodiment 2, and the difference from embodiment 2 is that the fixed disk 4 is a disk fixed at the center of the upper surface of the magnetic compass floating body 2, and the azimuth dial 6 is a ring that is sleeved outside the disk .

[0029] Working process is with embodiment 1.

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Abstract

The invention discloses a true bearing magnetic compass, which is provided with a cylindrical housing with a transparent top cover, wherein a columnar magnetic compass floating body is arranged inside the cylindrical housing, a liquid is filled between the magnetic compass floating body and the cylindrical housing, a magnetic rod is arranged inside the magnetic compass floating body, the upper surface of the magnetic compass floating body is marked with a magnetic north direction line, and is further provided with an azimuth dial, the surface of the azimuth dial is marked with an azimuth partition line and a true north direction line, and the azimuth dial can float and rotate along with the magnetic compass floating body, and can rotate relative to the magnetic compass floating body. With the true bearing magnetic compass, the true north direction and the true bearing can be accurately measured and calibrated, such that the magnetic compass use is convenient. The true bearing magnetic compass can be widely used in navigation, geodetic survey, geological exploration, travel, military, and other fields.

Description

technical field [0001] The invention relates to an orientation device, in particular to a magnetic compass which is easy to operate and can accurately calibrate the true north direction and true azimuth. Background technique [0002] A magnetic compass (also known as a magnetic compass) is an instrument that provides a direction reference and indicates a heading, and is often used in navigation, aviation, geodesy, geological exploration, travel and military affairs. The existing magnetic compass is provided with a cylindrical shell with a transparent top cover, and a columnar magnetic compass floating body is arranged in the cylindrical shell. Liquid is filled between the magnetic compass floating body and the cylindrical shell, and a magnetic bar is placed in the magnetic compass floating body. The upper surface of the buoyant body is fixedly connected with a pointing plate, and the surface of the pointing plate is marked with a north arrow and an azimuth reticle, and the m...

Claims

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Application Information

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IPC IPC(8): G01C17/10
Inventor 刘雁春付建国王海亭
Owner 刘雁春
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