CN2172508Y

CN2172508Y - 3-D teaching aid simulating celestial body movement

Info

Publication number: CN2172508Y
Application number: CN 93234835
Authority: CN
Inventors: 杨学明
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-10-15
Filing date: 1993-10-15
Publication date: 1994-07-20
Anticipated expiration: 2003-10-15

Abstract

The utility model relates to a tridimensional teaching aid simulating celestial body movements which mainly comprises a triangular supporting frame, a rotary frame, a dynamic force source, a metric dial, a parallel light source, a sun, a moon, an earth, a time difference dial and a lunar dial. The utility model can exactly demonstrate the running traces of the sun, the earth and the moon and lunar or solar calendar times corresponding to the positions of the sun, the earth and the moon. When the running positions of the earth, the sun and the moon conform to a certain condition, the utility model can display the total lunar eclipse, the partial lunar eclipse and the partial solar eclipse. The utility model has the advantages of simple structure, reliable performance, high precision of running and objective demonstration. The utility model is an objective tridimensional teaching aid and can be made into a fine tridimensional calendar.

Description

3-D teaching aid simulating celestial body movement

The utility model relates to a kind of teaching aid, and refering in particular to is the three-dimensional teaching aid of a kind of simulation celestial bodies motion.

People know, the moon also rotates around the earth except that rotation, the earth is also around its axis rotation and be with the moon to rotate around the sun together, the sun is also around self axis rotation simultaneously, the spontaneous phenomenon of this outwardness, be familiar with by the mankind already, and entered in students in middle and primary schools' the textbook, also just because of the sun, the earth, this moving situation between the moon three, caused daytime on the earth, night, spring, summer, autumn, the variation in winter, still, up to now, also do not have a kind of simple model can accurately embody this moving situation, bring certain difficulty to students in middle and primary schools study and the knowledge of understanding this respect.

The purpose of this utility model is to provide a kind of simple in structure, stable performance, the three-dimensional teaching aid of simulation celestial bodies motion that kinematic accuracy is high.

Concrete structure of the present utility model describes in detail below in conjunction with accompanying drawing:

Accompanying drawing is the utility model master cut-open view:

Referring to accompanying drawing, the utility model is made up of A-frame 1, swivel mount 2, power source 3, bowl-shape support 4, metric system dial 5, source of parallel light 6, the sun 7, the moon 8, the earth 9, hollow locating shaft 10, time difference dial 32, lunar calendar dial 33, described swivel mount 2 is a hollow cuboid, its middle part is provided with a through hole, be fixed with a hollow shaft 11 in the through hole, hollow locating shaft 10 is installed in the hollow shaft 11 on the swivel mount 2, the one end is packed on the A-frame 1, and the other end is fixed with gear 12, sprocket wheel 13, bowl-shape Support 4 and be locked with A-frame 1 by nut 14 is connected as a single entity, metric system dial 5 is packed on the bowl-shape support 4, the sun also is packed on the metric system dial 5, source of parallel light 6 is by reflector 15, bulb 16, rotating shaft 17 forms, rotating shaft 17 is passed metric system dial 5 and is inserted in the hollow locating shaft 10, bulb 16 is equipped with in its upper end, reflector 15, the lower end is fixed with a travelling gear 18 and a collector ring 19, end at swivel mount 2 is fixed with a hollow bushing 20, time difference dial 32 is packed in the upper end of hollow bushing 20, be set with a hollow rotating shaft 21 at hollow bushing 20, end at hollow rotating shaft 21 is fixed with the sprocket wheel 22 that links to each other by chain with sprocket wheel 13, the other end is fixed with an earth Inclination maneuver frame 23, also be set with a hollow rotating shaft 24 at the middle part of hollow rotating shaft 21, be fixed with a sprocket wheel 25 and a pulling shelf 26 on it, simultaneously also be fixed with a support 27 in the end of swivel mount 2, the hollow garden that tilts at an angle with swivel mount 2 that is fixed with on the support 27 coils 28, be fixed with a drag ring 29 at hollow garden dish 28, the moon 8 is packed in an end of rotating shaft 30, rotating shaft 30 is inserted in the through hole of being located on the pulling shelf 26, its other end is provided with a friction pulley 31 and drag ring 29 contact frictions to drive the moon 8 rotations, the earth 9 is installed on the support 34 of being located on the earth Inclination maneuver frame 23 and by flexible axle 35 and links to each other to realize rotation with power source 3, lunar calendar dial 33 is installed in the end of swivel mount 2 and wraps pulling shelf 26 by support 47, the pointer 36 of being located on the pulling shelf 26 can be pointed out and the earth at any time, the sun, the lunar calendar moment that moon run location is corresponding, simultaneously, on lunar calendar dial 33, also be provided with one in order to indicate Gregorian calendar pointer 37 constantly, power source 3 is located in the swivel mount 2, it can be made by quartz (controlled) oscillator or micro machine, the power that driven force source 3 spreads out of is divided into two-way, the shaft gear 39 that shaft gear 38 drives and gear 12 meshes of being located in the swivel mount 2 of leading up to rotates around gear 12, thereby drives Swivel mount 2 is around hollow locating shaft 10 rotations, another road is then by being located at rotating shaft 40, sprocket wheel 41, chain 42, sprocket wheel 43, rotating shaft 44, sprocket wheel 45,25 rotations of chain 46 band movable sprockets in the swivel mount 2, thereby driving pulling shelf 26 makes the moon 8 around earth rotation, simultaneously, the moon 8 is again by friction pulley 31 around the shaft 30 rotations with drag ring 29 contact frictions.

Operation principle of the present utility model is sketched in lower: when power source 3 sends power, the earth 9 obtains the power rotation by flexible axle 35, simultaneously, swivel mount 2 also obtains power around hollow locating shaft 10 rotations, thereby the drive earth, the moon is set around the sun revolution on the metric system dial 5, the moon also obtains power around earth rotation, drive month revolutions by friction pulley 31 and drag ring 29 contact frictions simultaneously, so, the sun, the earth, moving situation between the moon has just shown objectively, at this moment, the pointer 37 of being located at the pointer 36 on the pulling shelf 26 and being located on the lunar calendar dial 33 will be indicated and the sun at any time, the earth, the lunar calendar that moon run location is corresponding, the Gregorian calendar constantly, and work as the earth, the sun, when moon three's run location meets certain condition, can objective demonstration total eclipse of the moon, partial lunar eclipse and total solar eclipse, partial solar eclipse.

In sum, it is objective to the utlity model has simple in structure, dependable performance, running precision height, demonstration, to help people's correct understanding sun, the earth, moon moving law has bigger help, is a kind of objective three-dimensional teaching aid, can be made into exquisite three-dimensional desk calendar again and use.

Claims

The three-dimensional teaching aid of simulation celestial bodies motion, comprise A-frame 1, swivel mount 2, power source 3, bowl-shape support 4, metric system index dial 5, source of parallel light 6, the sun 7, the moon 8, the earth 9, hollow locating shaft 10, time difference index dial 32, lunar calendar index dial 33, described swivel mount 2 is a hollow rectangular parallelepiped, its middle part is provided with a through hole, it is characterized in that in the through hole of swivel mount 2, being fixed with a tubular shaft 11, hollow locating shaft 10 is installed in the tubular shaft 11, the one end is packed on the A-frame 1, the other end is fixed with gear 12, sprocket wheel 13, bowl-shape support 4 and be locked with A-frame 1 by nut 14 is connected as a single entity, metric system index dial 5 is packed on the bowl-shape support 4, the sun also is packed on the metric system index dial 5, source of parallel light 6 is by reflex housing 15, bulb 16, rotating shaft 17 is formed, rotating shaft 17 is passed metric system index dial 5 and is inserted in the hollow locating shaft 10, bulb 16 is equipped with in its upper end, reflex housing 15, the lower end is fixed with a transmission gear 18 and a collector ring 19, end at swivel mount 2 is fixed with a hollow bushing 20, time difference index dial 32 is packed in the upper end of hollow bushing 20, on hollow bushing 20, be set with a hollow rotating shaft 21, end at hollow rotating shaft 21 is fixed with the sprocket wheel 22 that links to each other by chain with sprocket wheel 13, the other end is fixed with an earth inclination angle adjustment rack 23, also be set with a hollow rotating shaft 24 at the middle part of hollow rotating shaft 21, be fixed with a sprocket wheel 25 and one group of frame 26 on it, simultaneously also be fixed with a support 27 in the end of swivel mount 2, the hollow garden that tilts at an angle with swivel mount 2 that is fixed with on the support 27 coils 28, on hollow garden dish 28, be fixed with a friction ring 29, the moon 8 is packed in an end of rotating shaft 30, rotating shaft 30 is inserted into to be located in the through hole of dialling on the frame 26, its other end is provided with a friction pulley 31 and friction ring 29 contact frictions to drive the moon 8 rotations, the earth 9 is installed on the support of being located on the earth inclination angle adjustment rack 23 34 and by flexible axle 35 and links to each other with power source 3 to realize rotation, lunar calendar index dial 33 is installed in the end of swivel mount 2 by support 47 and wraps dials frame 26, the pointer of being located on group frame 26 36 can be pointed out and the earth at any time, the sun, the corresponding lunar calendar of moon run location constantly, simultaneously, on lunar calendar index dial 33, also be provided with one in order to indication Gregorian calendar pointer 37 constantly, power source 3 is located in the swivel mount 2, it can be made by quartz (controlled) oscillator or micromotor, the power that spreads out of from power source 3 is divided into two-way, the shaft gear of being located in the swivel mount 2 39 that shaft gear 38 drives and gear 12 meshes of leading up to rotates around gear 12, thereby driven rotary frame 2 is around hollow locating shaft 10 rotations, another road is then by being located at the rotating shaft 40 in the swivel mount 2, sprocket wheel 41, chain 42, sprocket wheel 43, rotating shaft 44, sprocket wheel 45, chain 46 drives sprocket wheel 25 rotations, thereby drive dialling frame 26 makes the moon 8 rotate around the earth, simultaneously, the moon 8 is again by friction pulley 31 30 rotations around the shaft with friction ring 29 contact frictions.