CN2304162Y - Demonstration instrument for running of the sun, the earth and the moon - Google Patents

Abstract

The utility model relates to a demonstration instrument for the running of the sun, the earth and the moon. A support bar 6 connected with a fixed disc 35 is connected with a support bracket 34, and the other end of the support bracket 34 is connected with a support rod 16 and an outer sleeve hollow shaft 11 which is connected with a support rod 21. The top ends of support bars 6, 16, 21 are respectively combined with a sun model 7, an earth model 18 and a moon model 19. A transmission system is composed of belt wheels 8, 10, 14 driven by a motor 3, rubber belts 5, 9, 13, gears Z1-Z7 and a universal joint 15. Thus, the earth model can rotate and revolve around the sun model, and the moon model can revolve around the earth model and revolve around the sun model along with the earth model. The utility model can perform four season changes, polar day, polar night, new moon, full moon, sun eclipse, moon eclipse, etc. The utility model can provide perceptual knowledge of the running states of the sun, the earth and the moon to beginners in middle and elementary schools and particularly remote areas.

Description

Day,, moon operation demonstrator

This day,, moon operation demonstrator relates to the instruments used for education class.

During prior art provided, the primary school teaching instrument, terrestrial globe is only arranged, can not demonstrate earth rotation and revolving around the sun, the moon rotates around the earth, and with the circumsolar revolution of the earth, to throughout the year, the prestige of the moon, the first day of the lunar month, solar eclipse, lunar eclipses etc. can not provide perceptual knowledge to the student.

The purpose of this utility model is to overcome the above-mentioned weak point of prior art, provide a kind of day,, moon moving law, demonstration throughout the year, the moon prestiges, the first day of the lunar month, solar eclipse, the lunar eclipse origin cause of formation, to the beginner provide perceptual knowledge day,, the moon moves demonstrator.

Technical solution of the present utility model is: connect revolution of earth bearing support 34 on the sun cramp bar 6 that connects on the shaft collar 35, the other end connects earth cramp bar 16, overcoat tubular shaft 11, connects moon cramp bar 21, cramp bar 6,16,21 tops connect the sun 7, the earth 18, the moon 19, motor 3 Combined belt wheels 8 respectively, belt wheel 10,14, rubber strip 5,9,13 and gear Z ₁22～Z ₇32, universal coupling 15 formation kinematic trains can make the earth 18 rotations and around the sun 7 revolution, the moon 19 revolves around the sun around the earth 18 rotations and with the earth.

Below in conjunction with accompanying drawing 1. days,, the utility model is described in further detail for moon operation demonstrator structure synoptic diagram.Among the figure: 1. counterweight, 2. motor fixing frame, 3. motor, 4. small pulley, 5. rubber strip, 6. sun support holds bar, the 7. sun, 8. Combined belt wheel, 9. rubber strip, 10. big belt wheel, 11. tubular shafts, 12. universal coupling driving shafts, 13. rubber strips, 14. big belt wheels, 15. universal couplings, 16. earth cramp bars, 17. universal coupling supports, 18. earth, 19. moon, 20. screws, 21. moon cramp bars, 22. gear Z ₁, 23. ring gear Z ₂, 24. ring gear holders, 25. gear Z ₃, 26. gear Z ₄, 27. screws, 28. back-up rings, 29. gear Z ₅, 30. gear Z ₆, 31. cock wheel axles, 32. gear Z ₇, 33. transmission shafts, 34. revolution of earth bearing supports, 35. demonstrator shaft collars, 36. screws, 37. end face bearings, 38. supporting nails, 39. nuts, 40. earth's axis.

This day, ground, the moon operation demonstration instrument structure as shown in Figure 1, it is by discoid demonstrator fixed disk 35, with the strip revolution of the earth bearing support 34 of end face bearing 37 with 6 connections of sun cramp bar, fastening with screw 36, sun cramp bar 6 is hollow, its top dress milky ball cover, in establish bulb and consist of the sun 7, bottom dress Combined belt wheel 8, bearing support 34 ends dress motor fixing frame 2, installing counterweight 1, motor 3, motor shaft lower end dress high speed small pulley 4, supporting adds 34 other ends dress hollow shaft 11, in earth cramp bar 16 is arranged, with back-up ring 28, screw 27 is fastening, and cramp bar 16 bottoms are cogged Z in turn₅29, gear Z₃25, upper end screw 20 fastening universal coupling bearing supports 17, the earth 18 is established on the top, and there is gear Z hollow shaft 11 lower ends₁22, the big belt wheel 10 of low speed, upper end dress drive big belt wheel 14, connect the moon cramp bar 21 that there is the moon 19 on the top on it, bearing support 17 1 ends are established universal coupling driving shaft 12, the lower end is associated with belt wheel, the upper end universal coupling 15 connection earth's axis 40, the gear Z on the power transmission shaft 33₄26 with gear Z₃25 engagements, gear Z₇32 with gear Z on cock wheel axle 31₆30 with gear Z₅29 engagements, gear Z₁22 with the ring gear Z on the ring gear holder 24₂23 the engagement, belt wheel 4 and 8,8 and 10,14 and Universal coupling driving shaft lower end belt wheel connects with round rubber band 5,9,13 respectively. Demonstration board 35 Fill below three adjustable supports nail 38, with 39 fastening compositions of locking nut. The earth 18 can be used tellurion Repacking, the moon 19 can be used the plastics glomeration, and earth one side is slightly greatly yellow, and the ball one side is smaller privately Be black, in establish little bulb. Get gear Z₁=16、Z ₂=192、Z ₃=24、Z ₄=144、Z ₅ =48、Z ₆=48、Z ₇=24 teeth. Its resultant gear ratio $i=\frac{Z_4}{Z_3}\·\frac{Z_5}{Z_6}\·\frac{Z_6}{Z_7}=12$ , the band Wheel, 8,10,14 diameters are respectively 10mm, 200mm, 60mm. The earth's axis 40 is inclined with level The angle be 66 ° 34 ', be provided with the four seasons bidding quotation of spring, summer, autumn, winter circle, the sun above the Combined belt wheel 8 The pointer of the fixed directional earth 18 on the cramp bar 6 fixedly indicates on hollow shaft 11 place's earth bearing supports 34 North, wind up, prestige, lower edge etc. resemble dish the circle moon, the North is towards the sun, but fractional horse power motor 3 crawls.

Using method of the present utility model:

Use power supply direct current 6V, 2400 rev/mins of motor speeds, starter motor 3 is through belt wheel 4, rubber strip 5, Combined belt wheel 8, rubber strip 9, big belt wheel 10, tubular shaft 11 is rotated, the moon 19 on the moon support bar 21 promptly rotates belt wheel 14 rubber strips 13, universal coupling driving shaft 12, universal coupling 15 around the earth 18, drive the earth 18 around the earth's axis 40 rotations, with the gear Z of tubular shaft 11 connections ₁22 with ring gear Z ₂23 engagements make tubular shaft 11, drive the earth 18 around the sun 7 revolution, move a week, the earth 18 rotations 360 circles, gear Z ₃25, Z ₄26, Z ₅29, Z ₆30, Z ₇32 ratio of gear i=12, gear Z ₁During 22 commentaries on classics, 12 circles, just in time the earth orbits the sun, and earth rotation 30 circles are exactly one month, and the moon promptly reveals the first day of the lunar month, prestige.The rotation revolution of the utility model function and characteristics 1, the demonstration earth; 2, the demonstration four seasons change, and can know to characterize polar day, polar night phenomenon; The origin cause of formation of 3, demonstration solar eclipse, lunar eclipse; 4, demonstration moon the first day of the lunar month, wind up, prestige, lower edge and dynamically month resemble; This instrument is simple in structure, and is easy to operate, in can be, primary school especially the beginner of remote districts the perceptual knowledge of the sun, the earth, moon operation conditions is provided.

Embodiment: volume: the terrestrial globe moon sphere volume of one of long * wide * high 750 * 750 * 400mm 60,000,000 minutes is 1/49 of the earth

Claims (1)

1, day moon operation demonstrator,,, it is gone up the sun cramp bar (6) that connects by shaft collar (35) and goes up connection revolution of earth bearing support (34), the other end connects earth cramp bar (16), overcoat tubular shaft (11), connects moon cramp bar (21), cramp bar (6), (16), (21) top connect the sun (7), the earth (18), the moon (19) respectively and form, and it is characterized in that motor (3), Combined belt wheel (8), belt wheel (10), (14), rubber strip (5), (9), (13) and gear Z ₁22～Z ₇32, universal coupling (15) formation kinematic train can make the earth (18) rotation and around the sun (7) revolution, the moon (19) revolves around the sun around the earth (18) rotation and with the earth.

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