CN2828986Y

CN2828986Y - Anniversary morning and night instrument

Info

Publication number: CN2828986Y
Application number: CN 200520111416
Authority: CN
Inventors: 罗牧晴; 黄建通; 林忠进
Original assignee: LUO MOQING
Current assignee: LUO MOQING
Priority date: 2005-06-14
Filing date: 2005-06-14
Publication date: 2006-10-18
Anticipated expiration: 2015-06-14

Abstract

The utility model relates to a demonstration teaching aid, particularly an anniversary morning and night instrument. The utility model is to provide an earth movement demonstrating instrument which can directly display the length of a day and a night at certain time and a certain place and a solar altitude at noon, and can indirectly determine the time of sunrise and sunset. An annular supporter is fixed on a base, an earth shell body is connected with the annular supporter and the intersection angle between the shaft line of a rotary shaft and the vertical centre line is 23 DEG 26 minutes. A night half ball shell body is connected with the annular supporter through a limit supporter, a sliding handle and an auxiliary supporter and is sheathed at the outer side of the earth shell body. Both ends of a semiannular scale disc are fixed on the night half ball shell body. A parallel ray mark is fixed in the 90 DEG position of the semiannular scale disc. The anniversary seasonal variation formed by earth rotation and earth revolution can be changed into the regularity variation of a morning and night line and the solar altitude at noon. The utility model can directly display the certain time of the whole year, the length of the day and the night in global places and the solar altitude at noon, can indirectly determine the time of sunrise and sunset of certain latitude in all places and can directly display polar day or polar night range between two poles at the certain time of the whole year. The utility model has the advantages of simple structure, strong direct viewing and complete functions.

Description

The anniversary Instrument for surveying solar time and azimuth

Technical field

The utility model relates to a kind of demonstration teaching aid, especially relates to a kind of science and education demonstration instrument that shows earth movements.

Background technology

Since the equatorial plane of the earth and Earth's orbit face be 23 ° 26 ' the angle of cut, therefore the earth has four seasons variation in 1 year, the variation of certain ground temperature is directly related with the length round the clock and the height of the sun at noon in this place.Length has reflected the length of sunshine-duration round the clock, and height of the sun at noon has reflected the power of solar radiation.What of some time somewhere solar radiation energy are comprehensive these two kinds of factors can express qualitatively.All can't the ocular demonstration annual earth of instruments such as existing terrestrial globe, three-globe instrument length round the clock changes and height of the sun at noon changes, and understands and the knowledge of grasping this respect seems very difficult.

Summary of the invention

The purpose of this utility model is at can't the ocular demonstration annual earth deficiency that length changes and height of the sun at noon changes round the clock of existing demonstration instrument, provides a kind of and can directly show the length round the clock in some time somewhere and the earth movement demonstration instrument device of height of the sun at noon and indirectly definite sun set/raise time.

The utility model is provided with pedestal, ring-like support, ball shell, rotating shaft, night hemisphere housing, limiting bracket, sliding handle, assistant support, half-ring dial and parallel rays mark.Ring-like support vertically be fixed on pedestal directly over, ball shell is connected with ring support by its rotating shaft, the axis of rotating shaft and perpendicular bisector are 23 ° of 26 ' angles of cut, the night hemisphere housing is connected and is enclosed within the outside of ball shell with ring support by limiting bracket, sliding handle and 2 assistant supports, the two ends of half-ring dial are fixed on the night hemisphere housing, the parallel rays mark is fixed on 90 ° of positions of half-ring dial, and can follow the night hemisphere housing to carry out arc and move; The effect of limiting bracket and sliding handle is fixing night hemisphere housing and limit it and move in the arc sliding tray and fastening, and fastening mode can adopt the securing member of rotational slide handle one end to realize; The effect of assistant support is that auxiliary night hemisphere housing carries out the circular arc slip along ring support.

Ring-like support is provided with twenty-four solar terms index dial (distance between the solar term scale be near sinusoidal rule change) and camber sliding tray (the circular arc angle at sliding tray two ends be 46 ° 52 ').

The semisphere thin walled shell that the night hemisphere housing is opaque or trnaslucent materials is made has 0 °～90 ° and 90 °～0 ° two sections adjacent angle marks on the half-ring dial.The profile of parallel rays mark can adopt shapes such as arrow-shaped, represents the projecting direction of sunray.

Ball shell adopts the hollow ball on the terrestrial globe, and appearance is painted with map and uses than the line segment of the warp and weft of the 15 ° of angles in interval of thick lines mark and equator, the north and south tropic, north and south polar circle and literal etc.

During use, the operation sliding handle is aimed at the scale of a certain solar term with the tip of wedge shape limiting bracket, and this moment, the edge of night hemisphere housing was exactly tellurian terminator; By terminator, not only can demonstrate the length round the clock in somewhere in this season (or one day) and determine sun set/raise time indirectly, can also demonstrate the polar day scope at polar night; By the hemisphere index dial, pairing angle is the height of the sun at noon in this place on ball shell.

The principle of the utility model utilization relative motion, dexterously the anniversary seasonal variations of earth rotation and revolution formation is converted into the regularity variation of terminator and height of the sun at noon, can directly show annual sometime, the length round the clock and the height of the sun at noon of all parts of the world, and determine certain latitude various places sun set/raise time indirectly, directly show the whole year sometime the polar regions polar day or polar night scope.Have advantages such as simple in structure, that intuitive strong, function is more complete, be specially adapted to teaching and activity to popularize scientific knowledge, help understanding and grasp astronomical geography knowledge.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment.

Fig. 2 is the vertical view of Fig. 1.

Embodiment

As Fig. 1, shown in 2, embodiment of the present utility model is provided with pedestal 1, ring support 2, ball shell 3, rotating shaft 4, night hemisphere housing 5, ring support 2 vertically be fixed on pedestal 1 directly over, ball shell 3 is connected with ring support 2 by rotating shaft 4, night hemisphere housing 5 is by limiting bracket 51, sliding handle 52, assistant support 53 is connected with ring-like support 2, half-ring dial 54 two ends are connected with night hemisphere housing 5, parallel rays mark 55 is connected the middle part of half-ring dial 54, and twenty-four solar terms index dial 21 and arc sliding tray 22 are positioned at a side-lower of ring support 2; Half-ring dial 54 indicates the scale of 0 °～90 ° and 90 °～0 °, twenty-four solar terms index dial 21 indicates the scale and the literal (Great Cold, the beginning of spring, rainwater, the Waking of Insects (3rd solar term), the Spring Equinox, Clear and Bright, grain rains, the Beginning of summer, Grain Full, Grain in Ear, the Summer Solstice, Slight Heat, Great Heat, the beginning of autumn, the Limit of Heat, White Dew, the Autumnal Equinox, Cold Dew, the Frost's Descent, the Beginning of Winter, slight snow, heavy snow, Winter Solstice) of the twenty-four solar terms, and the appearance of ball shell 3 is painted with map and marks equator, warp and weft, the north and south tropic, south poles astragal section and literal.In Fig. 1, the axis of rotating shaft 4 and perpendicular bisector are 23 ° of 26 ' angles of cut, the circular arc angle at sliding tray 22 two ends be 46 ° 52 '.

Claims

1, anniversary Instrument for surveying solar time and azimuth, it is characterized in that being provided with pedestal, ring-like support, ball shell, rotating shaft, night hemisphere housing, limiting bracket, sliding handle, assistant support, half-ring dial and parallel rays mark, ring-like support vertically be fixed on pedestal directly over, ball shell is connected with ring support by its rotating shaft, and the axis of rotating shaft and perpendicular bisector are 23 ° of 26 ' angles of cut; The night hemisphere housing is connected and is enclosed within the outside of ball shell with ring support by limiting bracket, sliding handle and 2 assistant supports, the two ends of half-ring dial are fixed on the night hemisphere housing, the parallel rays mark is fixed on 90 ° of positions of half-ring dial, and can follow the night hemisphere housing to carry out arc and move.

2, anniversary Instrument for surveying solar time and azimuth as claimed in claim 1 is characterized in that ring-like support is provided with twenty-four solar terms index dial and camber sliding tray, the circular arc angle at sliding tray two ends be 46 ° 52 '.

3, anniversary Instrument for surveying solar time and azimuth as claimed in claim 1 is characterized in that the semisphere thin walled shell that the night hemisphere housing is opaque or trnaslucent materials is made.

4, anniversary Instrument for surveying solar time and azimuth as claimed in claim 1 is characterized in that there is 0 ° on the half-ring dial～90 ° and 90 °～0 ° two sections adjacent angle marks.

5, anniversary Instrument for surveying solar time and azimuth as claimed in claim 1 is characterized in that the profile of parallel rays mark adopts the arrow-shaped shape, represents the projecting direction of sunray.

6, anniversary Instrument for surveying solar time and azimuth as claimed in claim 1, it is characterized in that ball shell adopts the hollow ball on the terrestrial globe, appearance is painted with map and with the line segment and the literal of the warp and weft of the 15 ° of angles in interval of lines mark and equator, the north and south tropic, north and south polar circle.