CN88201078U

CN88201078U - Device demonstrating earth-moon system moving round sun

Info

Publication number: CN88201078U
Application number: CN 88201078
Authority: CN
Inventors: 张泽铭
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-02-04
Filing date: 1988-02-04
Publication date: 1988-11-09

Abstract

The utility model discloses a device demonstrating earth-moon system moving round the sun, which belongs to a teaching aid used for the popularity of the astronomical knowledge. The utility model is characterized in that a transmission mechanism of the inclination angle of the gear mechanism is adopted to imitate the running state of the moving system among the moon, the earth, and the sun; the phenomena of the celestial objects such as the revolutions and the rotations of the earth and the moon, the alternations of the day and night and the four seasons, the occurrence of the polar day and the polar night, the occurrence of the solar eclipse and the lunar eclipse, and the change of the profit or loss of the lunar phase can all be demonstrated by the utility model. The utility model has the advantages of vivid demonstrating, high accuracy of data, easy understanding, and beneficial to the popularity of the astronomical knowledge.

Description

Device demonstrating earth-moon system moving round sun

The utility model belongs to a kind of teaching aid of universal astronomic knowledge.

The earth-moon system day operation is a kind of celestial body phenomenon of more complicated, and is normal with the aid of teaching aid as teaching in teaching.Disclosed in Ci hai " the May 4th formula moon ground running instrument " is made up of three spheroids of the expression sun, the earth, the moon and mechanical hook-up.When demonstration earth-moon system day operation, realize that the data precisions such as angle, rotating speed between three celestial bodies are not enough, the student is misunderstood.

The purpose of this utility model is, accurately demonstrates the situation of earth-moon system day operation realistically for reaching data, the situation that adopts a kind of mechanical transmission mechanism that can accurately reflect the angle moved between three celestial bodies, rotating speed to imitate the earth-moon system day operation.The utility model can be realized following state and precision:

1. the revolution of the earth and rotation: one week of revolution of earth, 365.25 weeks of earth rotation.

2. the revolution of the moon and rotation: moon public affairs circle, 29.5 weeks of earth rotation.

3. the angle of cut of the ecliptic plane and the equatorial plane: keep 23 ° of 26 ' angles constant.

On the earth round the clock alternately, the change in the four seasons, polar day and polar night phenomenon generation, the generation of solar eclipse and lunar eclipse phenomenon and the phenomenons such as profit and loss variation of the phases of the moon.

The drawing of accompanying drawing is described as follows:

Fig. 1. the structural drawing of earth-moon system day operation demonstrator

Fig. 2. the A of accompanying drawing 1 is to partial view

Fig. 3. the structure situation the when earth is positioned at the summer solstice

Fig. 4. the structure situation the when earth is positioned at the first point of Libra

Fig. 5. the structure situation the when earth is positioned at first point of Capricornus

Fig. 6. the gear mechanism synoptic diagram

The purpose of this utility model can realize by following measure: earth-moon system day operation demonstrator is made up of spheroid and the mechanical hook-up of representing the sun, the earth, three celestial bodies of the moon respectively.Mechanical hook-up is that the fluted disc ［ 13 ］ that is fixed together with sloping shaft ［ 10 ］ is housed in shell ［ 1 ］, be equipped with one on the sloping shaft ［ 10 ］ by upper support arm ［ 26 ］, lower support arm ［ 27 ］, gear mechanism ［ 5 ］, the inclination angle gear train that sleeve ［ 11 ］ and four pairs of pins ［ 4 ］, ［ 6 ］, ［ 9 ］, ［ 12 ］ are formed; Upper support arm ［ 26 ］ two ends of this inclination angle gear train are connected with the top of gear mechanism ［ 5 ］ with sleeve ［ 11 ］ both sides respectively with ［ 12 ］ by two pairs of pins ［ 6 ］, lower support arm ［ 27 ］ two ends are connected with the bottom of gear mechanism ［ 5 ］ with sleeve ［ 11 ］ respectively with ［ 9 ］ by two pairs of pins ［ 4 ］, the parallelogram that the connecting line group of these four pairs of pins can be changed at an angle, but no matter how angle changes, it is parallel that the line of its pin ［ 4 ］ and ［ 6 ］ and pin ［ 9 ］ and ［ 12 ］ line remain, thereby make the axis of sleeve ［ 11 ］ remain parallel with earth rotation axis ［ 19 ］.The inclination angle gear train is to be contained on the sloping shaft ［ 10 ］ by sleeve ［ 11 ］, and it cooperates for being slidingly matched, and gear ［ 3 ］ and fluted disc ［ 13 ］ are meshed.Two support slippers ［ 7 ］ and ［ 15 ］ lay respectively at the two ends of lower support arm ［ 27 ］, its underpart contacts with the surface of fluted disc ［ 13 ］, make lower support arm ［ 27 ］ two ends keep equating, to guarantee that gear ［ 3 ］ can both guarantee when turning to any position and the good engagement of fluted disc ［ 13 ］ with the distance on the surface of fluted disc ［ 13 ］.Because sleeve ［ 11 ］ is concentric with sloping shaft ［ 10 ］, so that earth rotation axis ［ 19 ］ and tilt axis ［ 23 ］ remain is parallel, tilt axis ［ 23 ］ and ecliptic upper thread ［ 25 ］ are a fixed angle.Red diatom of the earth ［ 18 ］ is vertical with tilt axis ［ 23 ］, thereby has realized that gear ［ 3 ］ drives the inclination angle gear train when fluted disc ［ 13 ］ rotates a week, and its earth equatorial plane ［ 18 ］ remains constant with the angle of cut of ecliptic upper thread ［ 25 ］.

The structure and the gear ratio of gear mechanism are: gear ［ 3 ］ and gear ［ 30 ］ are connected to an integral body, gear ［ 31 ］, ［ 33 ］ and ［ 35 ］ are connected to an integral body, the earth ［ 20 ］ is fixedlyed connected with gear ［ 32 ］, and the moon ［ 22 ］ is fixedlyed connected with gear ［ 34 ］.The gear ratio of gear ［ 3 ］ and fluted disc ［ 13 ］ is to be 12:487, and gear ［ 30 ］ is 3:1 with the gear ratio of gear ［ 31 ］ and gear ［ 33 ］ and gear ［ 32 ］, and gear ［ 34 ］ is 59:6 with the gear ratio of gear ［ 35 ］.

When power-on switch ［ 14 ］, power supply ［ 8 ］ is connected with motor ［ 2 ］, gear mechanism ［ 5 ］ is driven by gear ［ 3 ］, with tilt axis ［ 23 ］ is the center, make circular motion along fluted disc ［ 13 ］, simultaneously, the earth ［ 20 ］ is that spinning motion is made at the center with earth rotation axis ［ 19 ］, and the moon ［ 22 ］ is that revolution and spinning motion are made in the center with earth rotation axis ［ 19 ］.Because the effect of the ratio of gear mechanism ［ 5 ］ the middle gear number of teeth, when the earth ［ 20 ］ around the sun in the time of ［ 24 ］ one weeks, the earth ［ 20 ］ 365.25 weeks of rotation, the cycle in a tropic year of symbol; When the moon ［ 22 ］ around the earth ［ 20 ］ revolution with when circling certainly, in the earth ［ 20 ］ 29.5 weeks of rotation, signify a phases of the moon period of change; When the earth ［ 20 ］ when the sun ［ 24 ］ turns round, the angle of cut of ecliptic upper thread ［ 25 ］ and terrestrial equator upper thread ［ 19 ］ remains unchanged, the symbol ecliptic obliquity is constant.

The surface of Earth's orbit index dial ［ 29 ］ marks off the scale of day, month and four seasons intersection point, can indicate the earth ［ 20 ］ in residing position when the sun ［ 24 ］ turns round by Earth's orbit pointer ［ 16 ］: the surface of lunar orbit index dial ［ 17 ］ marks off day and hopes, north, wind up, the scale of lower edge intersection point, can indicate the moon ［ 22 ］ in residing position when the earth ［ 20 ］ turns round by lunar orbit pointer ［ 21 ］; The surface of data knowledge dish ［ 28 ］ is printed on the various relevant datas and relevant astronomic knowledge that concern between the earth, the moon, the sun itself and their threes, so that consult at any time in use and grasp.

The utility model is done further narration below in conjunction with (accompanying drawing) embodiment, the sun ［ 24 ］ but in alight bubble is housed, the moon ［ 22 ］ surface scribbles color, the earth ［ 20 ］ can be selected the terrestrial globe of selling on the market for use, makes demonstration more true to nature.Tilt axis in the gear train ［ 23 ］ and fluted disc ［ 13 ］ be angle be 66 ° 34 ' fixed angle, be that tilt axis ［ 23 ］ is a fixed angle with the ecliptic upper thread, its angle be 66 ° 34 ' fixed angle, the angle of cut of its terrestrial equator upper thread ［ 18 ］ and ecliptic upper thread ［ 25 ］ remain 23 ° 26 ' angle constant.The angle of cut of the moon equatorial plane and normal society face and ecliptic plane adopts approximate angle, and is promptly identical with terrestrial equator upper thread ［ 18 ］, with the approximate symbol angle that the moon rotates round the earth.

Gear ［ 3 ］ in the gear mechanism ［ 5 ］ is 12 teeth, fluted disc ［ 13 ］ is 487 teeth, gear ［ 30 ］ is 3:1 with the gear ratio of gear ［ 31 ］ and gear ［ 33 ］ and gear ［ 32 ］, gear ［ 34 ］ is 59 teeth, gear ［ 35 ］ is 6 teeth, when gear ［ 3 ］ when fluted disc ［ 13 ］ rotates a week, gear ［ 32 ］ drives the earth ［ 20 ］ 365.25 weeks of rotation, when gear ［ 34 ］ drives the moon during one week, gear ［ 32 ］ the drive earth ［ 20 ］ 29.5 weeks of rotation.

Power switch ［ 14 ］ can place respectively fast, at a slow speed with close three kinds of states so that select for use during demonstration.

The utility model realizes that the demonstration of earth-moon system day operation is true to nature, data precision height, the popularizing of useful student's understanding and astronomic knowledge; It is simple in structure, and cost is low, is convenient to promote; Except can for school as teaching aid with, scalable ratio also is as the facility of the universal astronomic knowledge in public place.

Claims

1, a kind of by the spheroid of representing the sun, the earth, three celestial bodies of the moon respectively and earth-moon system day operation demonstrator that mechanical hook-up is formed, it is characterized in that mechanical hook-up forms the mechanical transmission mechanism with inclination angle by sloping shaft [10], fluted disc [13], upper support arm [26], lower support arm [27], gear mechanism [5], sleeve [11] and four pairs of pins [4], [6], [9], [12], demonstrator is equipped with Earth's orbit index dial [29], lunar orbit index dial [17], data knowledge dish [28].

2, earth-moon system day operation demonstrator according to claim 1 is characterized in that sleeve ［ 11 ］ is contained on the sloping shaft ［ 10 ］, and it cooperates for being slidingly matched.

3, earth-moon system day operation demonstrator according to claim 1, it is characterized in that two support slippers ［ 7 ］ and ［ 15 ］ lay respectively at the two ends of lower support arm ［ 27 ］, its underpart contacts with the surface of fluted disc ［ 13 ］, makes lower support ［ 27 ］ two ends keep equating with the distance on the surface of fluted disc ［ 13 ］.

4, earth-moon system day operation demonstrator according to claim 1, the gear ratio that it is characterized in that gear mechanism ［ 5 ］ is: gear ［ 3 ］ and gear ［ 30 ］ are connected to an integral body, gear ［ 31 ］, ［ 33 ］ and ［ 35 ］ are connected to an integral body, the earth ［ 20 ］ is fixedlyed connected with gear ［ 32 ］, and the moon ［ 22 ］ is fixedlyed connected with gear ［ 34 ］.The gear ratio of gear ［ 3 ］ and fluted disc ［ 13 ］ is to be 12:487, and gear ［ 30 ］ is 3:1 with the gear ratio of gear ［ 31 ］ and gear ［ 33 ］ and gear ［ 32 ］, and gear ［ 34 ］ is 59:6 with the gear ratio of gear ［ 35 ］.

5, earth-moon system day operation demonstrator according to claim 1 is characterized in that the surface of Earth's orbit index dial ［ 29 ］ marks off the scale of day, month and four seasons intersection point.

6, earth-moon system day operation demonstrator according to claim 1, the surface that it is characterized in that lunar orbit index dial ［ 17 ］ mark off day and hope, north, wind up, the scale of lower edge intersection point.

7, earth-moon system day operation demonstrator according to claim 1 is characterized in that the surface of data knowledge dish ［ 28 ］ is printed on the various relevant datas and relevant astronomic knowledge that concern between the pass earth, the moon, the sun itself and their threes.