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Translation calculation ruler and use method thereof

A slide rule and translation device technology, applied in the field of marine surveying and mapping, can solve the problems of limited calculation function, complex design structure of surveying and mapping abacus, small scale range, etc., to improve convenience, save the drawing process, and reduce manufacturing and use costs. Effect

Active Publication Date: 2022-02-01
NAT INNOVATION INST OF DEFENSE TECH PLA ACAD OF MILITARY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of small size and light weight has been realized, but the design structure of this surveying and mapping abacus is complex, the scale range is small, and the calculation functions that can be realized are limited

Method used

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  • Translation calculation ruler and use method thereof
  • Translation calculation ruler and use method thereof
  • Translation calculation ruler and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Such as Figure 1-10 As shown, the present invention relates to a translational slide rule for nautical surveying and mapping. The translational slide rule includes a base ruler 100 and an extension ruler 200 . The extension ruler 200 can be stretched and retracted relative to the base ruler 100 . Wherein base ruler 100 is provided with MD root " I " character structural beam 101, in embodiment 1 with MD=12, each root " I " character structural beam 101 has upper edge scale 102 and lower edge scale 103 (see Figure 4 ), respectively corresponding to different speeds; each "T" shaped structural beam 201 has an upper scale 202 and a lower scale 203 (see Figure 10 ), corresponding to different speeds. Both the base ruler 100 and the stretch ruler 200 are made of transparent materials, and corresponding scales are printed on the upper and lower surfaces of the base ruler 100 and the stretch ruler 200 respectively, when the stretch ruler 200 is stretched to the limit posit...

Embodiment 2

[0074] According to embodiment 2 of the present invention, such as Figure 11-18As shown, a translational slide rule includes a base ruler 100, a stretching ruler 200, and a translation device, and the translation device includes a "back"-shaped connecting part 300 and a roller 400 arranged on the base ruler, and the "back"-shaped connection The translation device composed of part 300 and roller 400 realizes the translation of the slide rule along the set angle. The present embodiment 2 is based on the structure of the slide rule in embodiment 1 by adding a "back"-shaped connecting part 300 and roller 400.

[0075] Among them, the "back"-shaped connection part 300 of the translation device is arranged in the middle of the outermost two "I"-shaped structural beams 101 of the base ruler 100, and a "back"-shaped connection part 300 is arranged symmetrically at the left and right ends.

[0076] The "back"-shaped connection part 300 of the base ruler 100 has a first micro-gear 301 ...

example 1

[0097] Example 1: The range corresponding to the speed of 5-30 within 1-10 minutes (unit: chain)

[0098] The known speed is 5 knots and it takes 9 minutes. First find the line indicating the speed of 5 knots through the numbers on the left, find the scale line at t=9, and get the range of 7.5 chains, such as Figure 24 .

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Abstract

The invention discloses a translation calculation ruler and a use method thereof, and is applied to the field of marine surveying and mapping. The translation calculation ruler comprises a base ruler and a stretching ruler, the stretching ruler can stretch out and draw back relative to the base ruler, the base ruler comprises MD I-shaped structural beams, each I-shaped structural beam is provided with an upper edge scale and a lower edge scale, the stretching ruler comprises MD-1 'T'-shaped structural beams, each 'T'-shaped structural beam is provided with an upper edge scale and a lower edge scale, and the 'T'-shaped structural beams extend out and retract back in a space defined by two adjacent 'I'-shaped structural beams of the base ruler. According to the invention, through the design of the stretching ruler, the occupied space is effectively reduced, the scale range is extended by using a discrete stretching structure, and meanwhile, the navigation time, the navigation speed and the navigation mileage can be quickly calculated.

Description

technical field [0001] The invention relates to the technical field of nautical surveying and mapping, and is suitable for use in nautical drawing operations and teaching training, in particular to a translation slide rule and a using method thereof. Background technique [0002] Carrying out nautical surveying and mapping calculations requires the use of plotters and drawing tools. At present, parallel rulers, set squares, and protractors are commonly used in the field of navigation. In the process of navigation, when performing drawing calculations, although the existing parallel ruler and set square can be used to complete the task, there are many shortcomings. Convenient; the triangular plate is cumbersome to operate when drawing multiple direction lines, and it is a waste of time. There will also be relatively large errors in the translation process of drawing direction lines. The bidirectionality of the drawn lines may easily lead to misjudgment. Misreading the degree...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C22/00
CPCG01C22/00
Inventor 于化鹏庹洲慧李程程李子圆方宇晨
Owner NAT INNOVATION INST OF DEFENSE TECH PLA ACAD OF MILITARY SCI
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