CN2499921Y

CN2499921Y - Domonstration instrument for sun, earth and moon movement

Info

Publication number: CN2499921Y
Application number: CN 01267410
Authority: CN
Inventors: 潘广钺
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-10-10
Filing date: 2001-10-10
Publication date: 2002-07-10
Anticipated expiration: 2011-10-10

Abstract

The utility model discloses a novel demonstration instrument for the movements of the sun, the earth and the moon, which comprises that a ball-shaped cover 3 with a collecting mirror 4 is covered outside a bulb 2 at the center of the instrument to symbolize the phenomenon that the sun, and light beams converged by the collecting mirror always illuminate an earth model 6 rotating around the ball-shaped cover to present the revolution of the earth. A small ball 5 is driven by a motor 9 to rotate aslant around the earth model to present the rotation of the moon around the earth. A motor 10 is used for changing the direction of the inclined rotating track of the small ball to present the regression of the node of the moon's path. A solar eclipse can be seen only when the small ball rotates into the light beams. The utility model has the advantages of simple structure and easy use. Besides, the utility model can reproduce the reason for the generation of the solar eclipse at any moment and can present the phenomenon of the movement of the moon shadow on the earth during the solar eclipse.

Description

Day ground moon operation demonstrator

One. technical field:

The utility model relates to a kind of astronomical science popularization instruments used for education of demonstrating the sun, the earth and three basic moving laws of celestial body of the moon, promptly a kind of novel day ground month operation demonstrator.

Two. background technology:

The explanation sun, the earth, the basic moving law of three celestial bodies of the moon and the astronomical phenomena that produced thereof are substantially the most also to be important contents in the astronomical science popularization." letter name uranology dictionary " the 156th page according to the 279th page of Encyclopadia Sinica sky file and Shanghai Lexicographic Publishing House's in Dec, 1986 publication is contained, the domestic day ground month operation demonstrator that occurred the above-mentioned celestial operating rule of demonstration already---be called for short three-globe instrument, examine in the patent of newspaper at home, as notification number 2249939,2304162,2354200,2396466 etc., it all is demonstration days, ground, the utility model of month three basic operational relations of celestial body, but their major defect is: one. day, ground, the basic exercise relation of month three celestial bodies is: about 365.25 days of the earth revolves around the sun a week along ecliptic, about 29.5 days of the moon along normal society around one week of revolution of earth, about 5 degree of the normal society and the ecliptic angle of cut, its regression of the node moves about 18.6 one weeks.Existing instrument and utility model major part are only simulated the motion around the earth of the revolution of the earth and the moon, and to the regression of the node motion of normal society, have only indivedual instruments can be manual.Though therefore can not illustrate that every month, the moon can forward in the middle of the sun and the earth, seldom can see solar eclipse.Two, existing instrument all is to signify the sun with bulb, because of bulb intensity not enough, have under the situation of natural lighting by day in the exhibition room, when the moon runs to the sun and the earth middle, on earth model, can't see the shade of the moon, therefore say unclearly why when solar eclipse occurs, some places can be seen on earth, and some places be can't see.Three, existing instrument is to utilize the mutual relationship of complicated mechanical gearing by approximate actual speed ratio simulated solar, the earth, three motion of celestial body of the moon basically, this not only complex structure manufacturing difficulty but also very easily damage.Four, for the variation of explaining different starry sky of the four seasons, the demonstration board that on existing three-globe instrument, all has demonstration apparent motion of the sun rule.But all with the apparent place of the pointer indication sun, the intuitively also not enough inadequately imagery of this method can not allow spectators directly see the phenomenon of apparent motion of the sun to existing three-globe instrument.

Three. summary of the invention:

The utility model purpose be at above-mentioned deficiency provide a kind of simple in structure, easy to use, can be under the condition of indoor natural light illumination, when producing, the demonstration solar eclipse can see the phenomenon that moon shade passes on earth, this phenomenon can be reproduced at any time, needn't allow spectators wait for the long period, on the demonstration board that demonstration four seasons starry sky changes, can allow spectators see a kind of novel day ground month operation demonstrator that the hot spot of the symbol sun moves on ecliptic.

To achieve these goals, the utility model is in the bulb outside that is positioned at centre, be covered with one and have condenser and can rotating enclosed globe shade, the optical convergence that condenser sends bulb becomes strong beam and illuminates the earth model that is fixed on the movable arms, the main motor that drives the rotation of ball-type cover and movable arms is fixed on the base, at movable arms spherical model place regularly, also be equipped with to be bearing and axle sleeve around the bead of the earth model tilting rotary table symbol moon and the mechanism of change bead tilting rotary table orbital direction, the motor that drives the axle sleeve rotation of said mechanism is fixed on the movable arms, the motor that driving bearing rotates is fixed on the support plate, the other end in movable arms, one cover optical devices also are housed, this device can project a bright hot spot, makes on the zodiacal circle of its demonstration board that shines the demonstration apparent motion of the sun.

On the line for the enclosed globe shade that can be at any time forward the bead of the symbol moon to the symbol sun and earth model center, on instrument respectively with the motor of three switch controlling and driving axle sleeves rotations and the motor and the main motor of driving bearing rotation.

After the utility model has the advantages that the employing said structure, no matter earth model forwards any position to, when the bead of the symbol moon forwards in the strong beam of spherical model illuminatingly, on earth model, will see the shade that bead moves, this only just illustrates simply when solar eclipse occurs that the people in the area of shade process can see the reason that all the other areas then be can not see; Independently control with three motors, then can reproduce above-mentioned phenomenon at any time, needn't allow spectators wait for for a long time; Can see mobile solar facula on the ecliptic of demonstration board, this will make spectators be readily understood that why not starry sky throughout the year equally reaches the astronomical phenomena such as variation of the twenty-four solar terms; On structural design, utilize multiple new element to simplify drive mechanism, so low cost of manufacture, it is reliable, easy to use to turn round.

Four. description of drawings:

Accompanying drawing 1 is a simplification front elevation of the present utility model;

Among the figure: 1-axle, 2-bulb, 3-ball-type cover, the 4-condenser, the bead of the 5-symbol moon, 6-terrestrial globe, 7-normal society ring, 8,9-gear and motor are used for driving the rotation of the moon around the earth, 10-motor and gear are used for driving the regression of the node motion of normal society, the 11-cramp bar, 12-support plate, 13-have the axle sleeve of gear, the fulcrum of 14-supporting terrestrial globe, the 15-spider, be fixed on the support arm 18,16-keep earth vergence direction constant surely to gearing, 17-master's motor and gear, the 18-support arm, be fixed on the axle 1, can rotate, be fixed with terrestrial globe 4 at the one end with axle 1, bead 5 and other driving parts, be fixed with the cursor projector at the other end, the 19-base, the 20-cursor projector, 21-demonstration board, the bearing of 27-moon normal society motion, the 28-support.

Accompanying drawing the 2,3, the 4th, the utility model are done the partial simplified cut-open view after local the improvement.

Five. embodiment:

Optimal way of the present utility model signifies that as shown in Figure 1 the enclosed globe shade 3 of the sun is fixed on the axle 1, on axle 1, also be fixed with light source 2, movable arms 18, axle 1 is supported on the base 19, when the main motor 17 on being fixed on base 19 rotates, by driving member axle 1 is rotated.Certainly, each parts that are fixed on the axle 1 all move thereupon.

Right-hand member in movable arms 18 is fixed with spider 15, and the spheroid 6 of the symbol earth is supported on the spider 15 by fulcrum 14.When movable arms 18 rotations, enclosed globe shade 3 revolution of the earth 6 around the symbol sun will be driven.Because the effect to gearing 16 is arranged surely, so can keep its axis of rotation direction constant during the earth 6 revolution.

Be fixed with condenser 4 on enclosed globe shade 3, condenser 4 becomes a branch of with the optical convergence of light source 2 and is radiated on the earth 6, and because of above-mentioned each part all is fixed on axle 1 and the movable arms 18, no matter therefore the earth 6 forwards any position to, light beam will can impinge upon on the earth 6 all the time.

The bead 5 and the normal society ring 7 of the symbol moon are fixed on by pole 11 on the outer shroud of rolling bearing 27.What the interior ring of bearing 27 was tilted is fixed on the axle sleeve 13, also is fixed with support plate 12 and motor 9 on axle sleeve 13.When motor 9 rotated, the outer shroud that can drive bearing 27 by driving member 8 rotated, and the spheroid 5 and the normal society ring 7 that are fixed on the outer race are also moving thereupon, promptly represent the motion of the moon of every month one-period around the earth.

The axle sleeve 13 of spring bearing 27 by fulcrum 15 by rest on movable arms 18, and the motor 10 that axle sleeve 13 can be fixed on the movable arms 18 drives.When motor 10 rotated, axle sleeve 13 was promptly moving thereupon, and it is also moving thereupon to be tilted the bearing 27 that is fixed on above the axle sleeve 13 this moment, and its vergence direction also changes thereupon.This is the regression of the node motion of normal society.

Left end in movable arms 18, be fixed with cursor or laser projecting apparatus 20, it can have very with one, and the hot spot 22 of high brightness projects on the demonstration board 21, demonstration board is spliced into the circular conical surface or the face of cylinder of whole circle by polylith conical surface plate or pole panel, and with support 27 independent support around apparatus subject, be painted with ecliptic on the demonstration board 21 and the mark of 12 main constellations distributing along ecliptic and line, the 12 signs of the zodiac.Except that indicating scale, also indicate the twenty-four solar terms on the ecliptic, the hot spot that the projector 20 penetrates should be adjusted on the zodiacal circle of demonstration board.

The utility model also has following several embodiment except that can the scheme implementation by accompanying drawing 1:

Fig. 2 represents a kind of improvement of the present utility model, the condenser 4 that is about to be fixed on the spheroid 3 among Fig. 1 changes concave mirror 23 among Fig. 2 into, makes optical convergence become a branch of, in the fixing symmetric position of concave mirror of spheroid 3, have enough big hole 24, light beam is shone on the spheroid 6 by 24.

Fig. 3 has represented another improvement of the present utility model, promptly with the bulb 25 of band reflector, its light beam is directly impinged upon on the earth 6.

Fig. 4 has represented another kind of improvement the of the present utility model.Be about to demonstration board 26 and be processed into some fanning strips, when being installed on the base 19 again assembling combination become the monoblock circle.The hot spot 22 that this moment, the projector 20 was launched should be adjusted on the ecliptic of demonstration board 26, and all the other each structures are still as Fig. 1.

Claims

1. a novel day ground moon moves demonstrator, it is characterized in that: bulb (2) outside that is positioned at centre, be covered with one and have condenser (4) and can rotating ball-type cover (3), the optical convergence that condenser (4) sends bulb (2) becomes strong beam and illuminates the earth model (6) that is fixed on the movable arms (18); The main motor (17) that drives the rotation of ball-type cover (3) and movable arms (18) is fixed on the base (19); Movable arms (18) regularly spherical model (6) locate, also be equipped with to be bearing (27) and axle sleeve (13) around the bead (5) of earth model (6) the tilting rotary table symbol moon and the mechanism of change bead (5) tilting rotary table orbital direction, the motor (10) that drives the axle sleeve rotation of said mechanism is fixed on the movable arms (18), and the motor (9) that driving bearing (27) rotates is fixed on the support plate (12); The other end in movable arms (18), also be equipped with can project a bright hot spot (22) make its shine the demonstration apparent motion of the sun demonstration board (21) zodiacal circle on one the cover optical devices (20).

2. according to the described novel day ground of claim 1 month operation demonstrator, it is characterized in that: on the described ball-type cover (3), be equipped with and make light beam shine concave mirror (23) on the earth model (6) by perforate.

3. it is characterized in that according to the described novel day ground month operation demonstrator of claim 1: described ball-type cover (3) is equipped with the reflector bulb (25) that can make light optically focused.

4. according to described novel day ground month operation demonstrator of claim 1, it is characterized in that: near the described demonstration board (21) that is painted with ecliptic, ecliptic main constellation and line, the 12 signs of the zodiac and is marked with the twenty-four solar terms is to be combined into whole circle circular conical surface by be fixed with the fan-shaped conical surface of polylith at the instrument periphery.

5. according to claim 1 or 4 described novel day ground month operation demonstrators, it is characterized in that: describedly splice conglobate demonstration board, be fixed on the base (19) by a plurality of fanning strips (26).

6. according to ground month operation demonstrator of described novel day of claim 1, it is characterized in that: come the motor (10) of controlling and driving axle sleeve (13) rotation respectively and motor (9) and the main motor (17) that driving bearing (27) rotates with three switches.