CN201219001Y - Earth revolution demonstration device - Google Patents
Earth revolution demonstration device Download PDFInfo
- Publication number
- CN201219001Y CN201219001Y CNU2008200779082U CN200820077908U CN201219001Y CN 201219001 Y CN201219001 Y CN 201219001Y CN U2008200779082 U CNU2008200779082 U CN U2008200779082U CN 200820077908 U CN200820077908 U CN 200820077908U CN 201219001 Y CN201219001 Y CN 201219001Y
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- CN
- China
- Prior art keywords
- side small
- earth
- small grooved
- revolution
- grooved wheel
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Abstract
An earth revolution demonstrator comprises a base seat, a solar shaft, a rotor arm, a season disk, a sun, a left-side small grooved pulley, a terrestrial globe, a terrestrial bent axle, a right-side small grooved pulley, a driving belt, wherein the left-side small grooved pulley, the rotor arm, the season disk and the sun are fixed on the pillar of the base seat in turn; the terrestrial bent axle is mounted on another end of the rotor arm and the inclination angle of the terrestrial bent axle to the horizontal line is 66.5 DEGREE and the right-side small grooved pulley is mounted at the lower end of the terrestrial bent axle and the terrestrial globe is mounted on the upper end of the terrestrial bent axle and the left-side small grooved pulley is connected with the right-side small grooved pulley by the driving belt. The earth revolution demonstrator can be used in geography teaching in middle and elementary school. The earth revolution demonstrator is very visual and easy to understand when explaining the revolution feature and the reasons of the generation of the south and north tropics and the formation of the four seasons, with features of simple production and convenient use.
Description
Technical field
The utility model relates to a kind of teaching aid, especially relates to a kind of geography class teaching aid.
Background technology
At present, in the teaching of middle and primary schools geography classes, the revolution of earth feature, the reason that the generation of the north and south tropic and the four seasons form, the explanation of these several difficult point problems is to be teaching aid by terrestrial globe and geographical teaching wall chart mostly, finishes in conjunction with teacher's explanation.It is big that these several abstract problem students grasp difficulty, and teacher explains effort, and the classroom effect is low, and this makes geographical teaching lack the teaching aid of a kind of energy ocular demonstration always.
Summary of the invention
The purpose of this utility model provides a kind of revolution of earth demonstration device, and it can demonstrate the revolution of earth feature fast, the north and south tropic produces and the reason of four seasons formation.
The utility model is realized by following technical scheme:
A kind of revolution of earth demonstration device, it by base, solar shaft, swivel arm, season dish, the sun, left side small grooved wheel, terrestrial globe, earth cambered axle, right side small grooved wheel, driving-belt form; Wherein, left side small grooved wheel, swivel arm, season dish and the sun fixedly is housed successively on the column of base; The other end at swivel arm is equipped with earth cambered axle, and described earth cambered axle and horizontal pitch angle are 66.5 °, and the right side small grooved wheel is equipped with in earth cambered axle lower end, and terrestrial globe is equipped with in the upper end, is in transmission connection with driving-belt between left side small grooved wheel and the right side small grooved wheel; Coil described season and be marked with four seasons printed words.
Above-mentioned revolution of earth demonstration device is provided with the lines of representing the direct sunlight line between the sun and terrestrial globe.
Above-mentioned revolution of earth demonstration device, evenly indicate 24 solar term printed words on the dish described season.
Above-mentioned revolution of earth demonstration device, described left side small grooved wheel is identical with right side small grooved wheel diameter.
The utility model is used for middle and primary schools' geography class teaching, and is very directly perceived when the reason of the generation of explaining revolution of earth feature, the north and south tropic and four seasons formation, easy to understand.The utility model also has the characteristics simple, easy to use of making.
The utility model is described in further detail below in conjunction with accompanying drawing:
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the vertical view of Fig. 1.
Each label is among the figure: coil 4 in base 1, solar shaft 2, swivel arm 3, season, the lines 11 of the sun 5, left side small grooved wheel 6, terrestrial globe 7, earth cambered axle 8, right side small grooved wheel 9, driving-belt 10, expression direct sunlight line.
Embodiment
With reference to the accompanying drawings, with coil 4 in base 1, solar shaft 2, swivel arm 3, season, the sun 5 assembles by figure, he small grooved wheel 6 usefulness sheave supports in left side is fixed.Load onto earth cambered axle 8 at swivel arm 3 other ends, right side small grooved wheel 9 is installed in earth cambered axle 8 lower ends, fixes with the sheave support, and terrestrial globe 7 is installed in the upper end.The lines 11 of expression direct sunlight line are installed in the middle of the swivel arm 3.Slowly rotate with driving-belt 10 drive left side small grooved wheels 6 and right side small grooved wheel 9.Coil in season on 4 the border and evenly indicate 24 solar term such as Winter Solstice successively.During demonstration, adjust the earth arctic right direction and terrestrial globe 7 coil the position at place on 4 in season, counterclockwise stir swivel arm 3, make terrestrial globe 7 around the sun 5 revolution.In terrestrial globe 7 revolution processes, no matter revolution of earth is to any position, the inclination angle of the earth's axis and the arctic right direction all constant, demonstrate out the revolution of earth feature.Direct sunlight line 11 can shine 23.5 ° in south latitude in the Southern Hemisphere during revolution of earth, and direct projection light can shine on the parallel of 23.5 ° of north latitude on the Northern Hemisphere, thereby produces the tropic of Capricorn 13 and the tropic of Cancer 12.When the direct projection light 11 of the sun during at the tropic of Capricorn, the Northern Hemisphere is the coldest to be Winter Solstice; When direct sunlight line under the line the time, the Northern Hemisphere is the Spring Equinox.When the sun direct projection light 11 during at the tropic of Cancer, the Northern Hemisphere is the Summer Solstice, when the direct projection light of the sun under the line the time, the Northern Hemisphere is the Autumnal Equinox, this is the reason that forms in the four seasons.
The utility model is made simple, and cost is low, is applicable to middle and primary schools' geography class teaching use.
Claims (4)
1. revolution of earth demonstration device, it is characterized in that, it by base (1), solar shaft (2), swivel arm (3), season dish (4), the sun (5), left side small grooved wheel (6), terrestrial globe (7), earth cambered axle (8), right side small grooved wheel (9), driving-belt (10) form; Wherein, left side small grooved wheel (6), swivel arm (3), season dish (4) and the sun (5) fixedly is housed successively on the column of base (1); The other end at swivel arm (3) is equipped with earth cambered axle (8), and described earth cambered axle (8) is 66.5 ° with horizontal pitch angle, and right side small grooved wheel (9) is equipped with in earth cambered axle lower end, and terrestrial globe (7) is equipped with in the upper end; Be in transmission connection with driving-belt (10) between left side small grooved wheel and the right side small grooved wheel; Coil described season and be marked with four seasons printed words.
2, revolution of earth demonstration device according to claim 1 is characterized in that, is provided with the lines (11) of expression direct sunlight line between the sun (5) and terrestrial globe (7).
3, revolution of earth demonstration device according to claim 2 is characterized in that, evenly indicates 24 solar term printed words on the described dish in season (4).
4, revolution of earth demonstration device according to claim 3 is characterized in that, described left side small grooved wheel is identical with right side small grooved wheel diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200779082U CN201219001Y (en) | 2008-07-16 | 2008-07-16 | Earth revolution demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200779082U CN201219001Y (en) | 2008-07-16 | 2008-07-16 | Earth revolution demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201219001Y true CN201219001Y (en) | 2009-04-08 |
Family
ID=40541836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200779082U Expired - Fee Related CN201219001Y (en) | 2008-07-16 | 2008-07-16 | Earth revolution demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201219001Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102542900A (en) * | 2010-12-08 | 2012-07-04 | 石振民 | Chinese calendar model |
| CN102800241A (en) * | 2012-07-09 | 2012-11-28 | 钱嘉禾 | Direct solar radiation point regression movement apparatus |
| CN109697928A (en) * | 2019-03-06 | 2019-04-30 | 张嘉焜 | A kind of four seasons demonstrator |
-
2008
- 2008-07-16 CN CNU2008200779082U patent/CN201219001Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102542900A (en) * | 2010-12-08 | 2012-07-04 | 石振民 | Chinese calendar model |
| CN102800241A (en) * | 2012-07-09 | 2012-11-28 | 钱嘉禾 | Direct solar radiation point regression movement apparatus |
| CN109697928A (en) * | 2019-03-06 | 2019-04-30 | 张嘉焜 | A kind of four seasons demonstrator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090408 Termination date: 20140716 |
|
| EXPY | Termination of patent right or utility model |