CN2185913Y

CN2185913Y - Instrument for surveying solar time and azimuth

Info

Publication number: CN2185913Y
Application number: CN 94203367
Authority: CN
Inventors: 陈咸珣
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-02-03
Filing date: 1994-02-03
Publication date: 1994-12-21
Anticipated expiration: 2004-02-03

Abstract

The utility model relates to a visual demonstrating instrument for demonstrating sunrise time, sundown time and azimuth angles, particularly a dawn-dusk instrument. The utility model uses a structural form that an ecliptic and an equator are composed of a base and an annular integral bracket provided with a plurality of graduated rings. A ring rack composed of a meridian circle and a dawn-dusk circle is provided with a globe and an instructing mark, and an earth shaft is fixed on the integral bracket. The utility model can display dawn-dusk time, a sunrise azimuth angle and various geographical phenomena and complete the conversion of the time of various areas through the deflection generated by the regress movement of the dawn-dusk circle relative to warp thread follow sun. The utility model has the advantages of simple structure, visual display and convenient use.

Description

Instrument for surveying solar time and azimuth

The utility model relates to a kind of sun and haunts and the twilight moment at the whole story, the ocular demonstration and the determining instrument of the geographical phenomenons such as position angle that haunt altitude of the sun and day, particularly a kind of Instrument for surveying solar time and azimuth.

Chinese patent CN2078895U discloses a kind of sun ocular demonstration instrument constantly that haunts, it can be demonstrated the sun that respectively is subjected to the corresponding date of measuring point on the earth intuitively and haunt constantly, when finishing local time and standard simultaneously, the conversion of universal time, earth's axis inclination is described visually and points to the relation constant and four seasons and length variation round the clock, but it can not measure the position angle of haunting day intuitively, need calculate by loaded down with trivial details formula and try to achieve, teaching, scientific research, production, life have all been caused a lot of inconvenience.

The purpose of this utility model is that a kind of Instrument for surveying solar time and azimuth that can measure haunt day position angle and height will be provided.

The purpose of this utility model is achieved in that integral ring-shaped support 6 is housed on the Instrument for surveying solar time and azimuth base 7, along vertical line tilt 23 ° 26 ' the earth's axis 8 two ends be fixed on the integral support, plane, integral support 6 zero degree line place is provided with celestial equator 4, active ring 22 by the location of the bearing bracket on the celestial equator 4, be provided with by orthogonal meridian circle 2 in the active ring and enclose 9 frameworks of forming 12 morning and evening, indicateing arm 10 and terrestrial globe 1 are arranged in the framework 12, it is characterized in that also being provided with on the celestial equator 4 time conversion ring 23, time conversion ring 23 is located by carriage 24 supportings with active ring 22; Integral support 6 and celestial equator 4 be 23 ° 26 ' the plane be provided with the ecliptic 14 that ecliptic longitude calibration loop 11 and 5 liang of rings of adjustable date calibration ring are formed, be provided with on the base 7 by ecliptic longitude index dial 26, the determination of azimuth dish that day haunts formed of drum 27 and graticule dish 28 from midnight to noon and from sunrise to sunset.Some parallel lines are carved with on graticule dish 28 surfaces, and wherein one is passed through the center of circle.The aperture at the sun 3 centers is inserted with the filament of a straight and good toughness, and its extensions are pointed to the centre of sphere of terrestrial globe.

The utility model is owing to having adopted time conversion ring and adjustable date to carve ring and the determination of azimuth device that haunts day, thereby the apparent place that can determine any time sun haunt constantly position angle and height, it is many to have function, applied widely, characteristics such as intuitive display is accurate, and is easy to use.

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is a front view of the present utility model.

Fig. 2 is a vertical view of the present utility model.

Among the figure 1, terrestrial globe, 2, meridian circle, 3, the sun, 4, celestial equator, 5, adjustable date calibration ring, 6, integral support, 7, base, 8, terrestrial globe, 9, enclose frame morning and evening, 10, indicateing arm, 11, the ecliptic longitude calibration loop, 12, framework, 13, rotating shaft, 14, ecliptic, 15, the line of rabbet joint, 16, morning and evening figure, 17, the circle that haunts day, 18, scheme civilian morning and evening, 19, astronomical morning and evening circle, 20, warp, 21, parallel, 22, active ring, 23, the time conversion ring, 24, carriage, 25, determination of azimuth device, 26, index dial, 27, circle dish from midnight to noon and from sunrise to sunset, 28, the graticule dish.

The use of Instrument for surveying solar time and azimuth is as follows:

First scale of year on the date calibration dish is aimed at the corresponding scale of ecliptic longitude calibration loop, both hands thumb and forefinger are gently controlled the morning and evening circle of intersection in morning and evening and the connecting portion of active ring, rotate counterclockwise, the sun is moved to along ecliptic measure a day scale, again with meridian circle along the warp adjustment, sun central point is overlapped with ecliptic plan.

Rotate the globe, measuring point and morning and evening are enclosed intersect, rotate indicateing arm, make it to intersect at this point, read the latitude of measuring point from indicateing arm; Remember the scale on the indicateing arm; And crossing with the circle that astronomy circle in morning and evening, civilian morning and evening encloses, haunts day successively, read beginning of astronomical morning twilight, beginning of civil morning twilight, sunrise respectively constantly; Above-mentioned scale on the indicateing arm and the confused line of circle in above-mentioned morning and evening are intersected, read sunset, end of civil evening twilight, end of astronomical evening twilight respectively constantly, the above-mentioned moment is local time.

The rotation time ring that converts makes the longitude corresponding with measuring point align with the sunrise and the time scale of beginning in civilian, astronomical morning and evening of measuring point, reads when distinguishing and universal time from time zone central meridian and the corresponding scale of the first meridian respectively; During district in the time of can asking sunset and civilian, end of astronomical evening twilight equally, universal time.The time conversion ring both can be used as the scale of determining the celestial sphere right ascension, was about to zero graduation and aimed at the first point of Aries, can determine the longitude of a certain measuring point again, was about to zero graduation and aimed at the first meridian.

Rotate the globe, when measuring point passed through meridian circle, the scale relative with measuring point from meridian circle read altitude of the sun." S " that from midnight to noon and from sunrise to sunset encloses held the ecliptic longitude scale at alignment sun central point place, stirring indicateing arm makes the terminator that haunts its scale corresponding with measuring point and day intersect, rotate the graticule dish, overlook indicateing arm simultaneously, make graticule or secondary graticule parallel, read the position angle of haunting day from graticule and fourth of the twelve Earthly Branches line at tenth of the twelve Earthly Branches angle with indicateing arm.Day, the position angle of haunting was numerically identical, and different is that sunrise is east by north (south), and sunset is west by north (south).

Claims

1, a kind of Instrument for surveying solar time and azimuth, annular integral support (6) is housed on the base (7), along vertical line tilt 23 ° 26 ' the earth's axis (8) two ends be fixed on the integral support, plane, integral support (6) zero degree line place is provided with celestial equator (4), active ring (22) by the carriage on the celestial equator (24) supporting location, be provided with the framework of forming by orthogonal meridian circle (2) and circle in morning and evening (9) (12) in the active ring, indicateing arm (10) and terrestrial globe (1) are arranged in the framework (12), it is characterized in that also being provided with on the celestial equator (4) time conversion ring (23), time conversion ring (23) is located by carriage (24) supporting with active ring (22); Integral support (6) and celestial equator (4) be 23 ° 26 ' the plane be provided with the ecliptic (14) that ecliptic longitude calibration loop (11) and adjustable date calibration ring (5) are formed, base (7) is provided with by ecliptic longitude index dial (26), the determination of azimuth device that day haunts formed of drum (27) and graticule dish (28) from midnight to noon and from sunrise to sunset.

2, Instrument for surveying solar time and azimuth according to claim 1 is characterized in that graticule dish (28) surface is carved with some parallel lines, and wherein one is passed through the center of circle.