Gear indexing assembly of sextant

A technology of tooth assembly and sextant, applied in sextant and other directions, can solve the problems of large deviation of precision measurement, influence of measurement effect, increase of meshing gap, etc., so as to improve accuracy, improve wear resistance and reduce wear and tear. gap effect

Inactive Publication Date: 2014-01-01
CHANGZHOU HAOMAI MARINE EQUIP TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing worm gear is made of alloy aluminum, and its center bearing is made of copper structure, which is easy to wear during meshing, resulting in increased meshing gap, which not only has a large deviation in precision measurement but also affects the measurement effect

Method used

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  • Gear indexing assembly of sextant
  • Gear indexing assembly of sextant

Examples

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Embodiment Construction

[0011] See figure 1 and figure 2 As shown, a sextant tooth assembly has a dial 1 and a central bearing connected to the dial 1, and a sliding groove 2 with a sawtooth structure is located at the edge of the dial 1, and its surface has A wear layer of tin bronze.

[0012] The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

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Abstract

The invention discloses a gear indexing assembly of a sextant. The gear indexing assembly is provided with a dial and a central bearing connected with the dial, the edge of the dial is provided with a sliding groove which is of a sawtooth structure, and the surface of the sliding groove is provided with a wear-resisting layer. Therefore, the wear resistance of a rack can be improved, and the abrasion clearance is reduced, thus the measurement error is reduced, and the accuracy is improved.

Description

technical field [0001] The invention relates to a nautical surveying and mapping instrument device, in particular to a toothed component of a sextant. Background technique [0002] In the field of navigation, a sextant is an optical instrument commonly used to measure the angle between two distant targets. It is usually used to measure the angle between the sun or other celestial bodies and the sea level or horizon at a certain moment, so as to quickly know the latitude and longitude of the position of the ship or aircraft. The existing worm gear is made of alloy aluminum, and its central bearing is made of copper structure, which is easy to wear during meshing, resulting in increased meshing clearance, which not only has a large deviation in precision measurement, but also affects the measurement effect. Contents of the invention [0003] The purpose of the present invention is to solve the above existing problems, and provide a sextant gear assembly with simple structur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C1/08
CPCG01C1/08
Inventor 朱亮狄丹岩
Owner CHANGZHOU HAOMAI MARINE EQUIP TECH
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