CN2249939Y

CN2249939Y - The earth and moon motion instrument

Info

Publication number: CN2249939Y
Application number: CN 95234846
Authority: CN
Inventors: 董希言; 王在章
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-10-16
Filing date: 1995-10-16
Publication date: 1997-03-19
Anticipated expiration: 2005-10-16

Abstract

The utility model discloses an earth and moon motion instrument, relating to an instrument which can present the relationship of the relative positions in the running process of the sun, the earth and the moon. The utility model can be used as a teaching instrument in middle and elementary schools and used for science generalization. The utility model has the structure that a terrestrial globe is installed on an elliptical track, comprising an earth model and a moon model. An electric lamp light source is arranged in the center. The exterior of the utility model is provided with a light shade which is provided with small holes. The utility model has the advantages that the relationship of the relative positions in the running process of the sun, the earth and the moon can be presented. The utility model can be used as a clock calendar, a monthly calendar and a year calendar. The utility model can be made into a manual type, a clock type or a large instrument type.

Description

Ground month running instrument

The utility model relates to a kind of instrument that can demonstrate the sun, the earth, moon mutual alignment relation in operational process, in can be used as, primary school teaching instrument usefulness, is a kind of ground month running instrument specifically.

Be commonly used to the terrestrial globe as instruments used for education at present, only one earth rotates, and the terrestrial globe that has has a little moon on earth next door, and when can demonstrate out earth rotation, the moon rotates around the earth.But moving operation conditions that The Earth Revolves round the Sun just can not be demonstrated out.Sometimes just get a light source, the simple sun of representing, hand takes terrestrial globe to rotate around light source, this method is difficult to regular, demonstrate the operation conditions of sunny, the earth, the moon accurately, especially when specific season of four of the Summer Solstice, Winter Solstice, the Spring Equinox, the Autumnal Equinox, the phenomenon of sun direct projection on the tropic of Cancer, the tropic of Capricorn and equator is difficult to demonstration comes out, thereby can not demonstrate out the seasonal variations situation.

The utility model purpose is to overcome the shortcoming in the prior art, the structure of original terrestrial globe is improved, a kind of ground month running instrument is proposed, can demonstrate out earth rotation, the moon rotates around the earth, the operation conditions that the earth rotates around the sun, especially when the Summer Solstice, Winter Solstice, the Spring Equinox, the Autumnal Equinox, the situation the when sun direct projection tropic of Cancer, the tropic of Capricorn and equator.

The utility model purpose is realized by following technical scheme: this ground month running instrument, include a terrestrial globe of forming by the big ball of the bead that signifies the moon and the symbol earth, bead is connected on the globe base by moon pole, and can rotate around big ball with the rotation of terrestrial globe base, a slide block is housed in the globe base bottom, the slide block xsect of packing into is in the elliptical orbit of flute profile, and can slide along elliptical orbit, one electric light light source is arranged at the elliptical orbit center, in electric light light source outside a light shield is housed, have aperture on the light shield, light shield is installed on the support below the electric light light source, gapped between support and the support column, can rotate, light shield rotates with support.

Can manual manipulation ground month running instrument, allow bead center on big ball and rotate, the demonstration moon rotates situation around the earth, the pulling terrestrial globe makes the slide block of globe base bottom slide along elliptical orbit, the demonstration earth situation that revolves around the sun.Two circle index dials are arranged in the elliptical orbit, and a circle is the moon of the expression Gregorian calendar, the Gregorian calendar index dial of Time of Day, and another circle is the lunar calendar index dial of expression moon month, Time of Day, this scale of the Gregorian calendar is divided into 12 parts, represent 12 months, also have 365 down scales, represent 365 days; Lunar calendar index dial is spliced by expression 30 days and 29 days fritter dish of expression.According to the concrete condition of each lunar calendar year, arrange flexibly.Meet the leap year, the leap month situation, can insert the expression leap year or the leap month small dial.One index dial is set on the base of terrestrial globe, and a circle 24 five equilibriums are represented 24 hours.Represent a fixed position on the big ball of the earth from terrestrial globe, connect a fixed pointers, point to index dial, can represent the time at this place on the earth.Slide block in the globe base bottom, in the elliptical orbit of packing into, the surface that this slide block and track are in contact with one another can be made smooth, makes slide block carry terrestrial globe and slides along track.Can use its running of manual operation.Perhaps slide block is made worm screw, make the annular wheel or the worm gear that a week 365 teeth are arranged in the slideway, one week of earth rotation, on elliptical orbit, only move a tooth, the earth turns around around the sun on elliptical orbit from ball 365 circles.The gear set that is equipped with in globe base is the watch and clock movement of 24 hours systems, and driving ground rotation one circle is 24 hours, connects the reduction gearing transmission and gives a month sphero-cylindrical lens, and ratio of gear is 29.5: 1, i.e. earth rotation 29.5 circles, and the moon rotates a circle around the earth.On the appropriate location of index dial, indicate the Spring Equinox, the Summer Solstice, the Autumnal Equinox, Winter Solstice, wait the title in season, can clearly be seen that when different solar terms the mutual alignment of the sun, the earth, moon relation.

On the light shield of being adorned outside the electric light light source, have an aperture, light appears from aperture, on the big ball of the expression earth of direct projection terrestrial globe, can represent the situation of sun direct projection.23 ° 30 of big ball pivot center and perpendicular line angle ', when terrestrial globe when elliptical orbit moves, this bundle direct projection light moves between the tropic of Cancer on the big ball of the expression earth and the tropic of Capricorn, can demonstrate out the earth situation in four seasons spring, summer, autumn and winter last one year, with middle of the month of the lunar calendar, finding moon situation of change and since two the circle index dials represent the Gregorian calendar and the lunar calendar respectively, can illustrate the Gregorian calendar, lunar calendar mutual relationship and leap year, the leap month principle.

This ground month running instrument can be used as religion word instrument, also can be used as the Popular Science Education instrument.Except the structure or mechanically operated structure that are made into simple manual operation, can also be made into large-scale electronics tabular form.

The advantage of ground month running instrument is simple in structure, make easily, can demonstrate out earth rotation easily, the moon is around the earth rotates and the earth revolves around the sun situation, owing to be provided with light shield, can demonstrate the situation shape of the sunny light direct projection tropic of Cancer, equator and the north and south tropic, the sun, the earth, moon three's relation when demonstrating season such as the Summer Solstice, the Spring Equinox, the Autumnal Equinox, Winter Solstice specifically, visually, and the origin cause of formation throughout the year.

Embodiment of accompanying drawings.

Fig. 1 is ground month running instrument one-piece construction figure.

Fig. 2 is ground month running instrument partial structurtes figure, and slide block is packed in the slideway;

Fig. 3 is ground month running instrument partial structurtes figure, and worm screw is packed in the worm gear;

This ground month running instrument, comprise a terrestrial globe of forming by the big ball (2) of the bead (3) that signifies the moon and the symbol earth, bead (3) is connected on the globe base (6) by moon pole (5), and can rotate around big ball (2) with the rotation of base (6), a slide block (9) is arranged below the globe base (6), the cross section of packing into is in the elliptical orbit of flute profile (4), and can slide in (4).One electric light light source (1) the expression sun is arranged at the elliptical orbit center, in electric light light source (1) outside a light shield (14) is arranged, light shield has aperture on (14), penetrates Ray Of Light in aperture, and the direct projection of simulated solar light on earth.When terrestrial globe when elliptical orbit (4) moves because 23 ° 30 of the earth's axis and vertical direction angle ', direct projection light is mobile between south, the tropic of Cancer, can represent variation throughout the year on the earth.Slide block (9) moves in track (4), also can change system into worm screw, and engaged transmission in worm gear has been made 365 teeth with worm gear or annular wheel, when terrestrial globe rotates a week around elliptical orbit, and ground club rotation 365 circles.Gear set (7), (8) in the globe base (6) are selected the watch and clock movement of 24 hours systems for use, and it is 24 hours that the drive earth's axis is rotated a week, connects reduction gearing transmission moon sphero-cylindrical lens, and ratio of gear is 29.5: 1, and the earth rotates 29.5 circles, and the moon turns around around the earth.One index dial (11) is arranged on the globe base (6), be divided into 24 five equilibriums, represent 24 hours, go up a certain ad-hoc location from the earth (2) and connect a fixed pointers (10) sensing index dial (11), can be used as clock and watch and use, represent the time of this position.(12), (13) are respectively Gregorian calendar scale and lunar calendar scale.

Claims

1, a kind of ground month running instrument, include a terrestrial globe of forming by the big ball of the bead that signifies the moon and the symbol earth, bead is connected on the globe base by moon pole, and can rotate around big ball with the rotation of terrestrial globe base, it is characterized in that being equipped with a slide block in the globe base bottom, the slide block xsect of packing into is in the elliptical orbit of flute profile, and can slide along elliptical orbit, one electric light light source is arranged at the elliptical orbit center, in electric light light source outside a light shield is housed, has aperture on the light shield, light shield is fixed on the support below the electric light light source, gapped between support and the support column, can rotate.

2, according to the described ground of claim 1 month running instrument, it is characterized in that having two to enclose index dials in the elliptical orbit inboard, one circle is the Gregorian calendar index dial of expression calendar month, day, another circle is expression moon month, the lunar calendar index dial of day, Gregorian calendar index dial is divided into 12 parts, 365 down scales, lunar calendar index dial is spliced by the fritter dish of 30 days and 29 days.

3, according to the described ground of claim 1 month running instrument, it is characterized in that being provided with an index dial on globe base, a circle 24 five equilibriums represents 24 hours, represent that from terrestrial globe the fixed position on the big ball of the earth connects fixed pointers sensing index dial.

4, according to the described ground of claim 1 month running instrument, slide block and raceway surface in the elliptical orbit that it is characterized in that packing into be smooth or will make gear in the slideway, and a week is 365 teeth, and slide block is made worm screw, and engagement is rotated in gear.

5, according to the described ground of claim 1 month running instrument, it is characterized in that the gear set that is equipped with is the watch and clock movement of 24 hours systems in globe base, driving earth's axis rotation one circle is 24 hours, connects reduction gearing transmission moon sphero-cylindrical lens, ratio of gear is 29.5: 1.