CN207115849U - Dynamic Geographic demonstration instrument for teaching - Google Patents
Dynamic Geographic demonstration instrument for teaching Download PDFInfo
- Publication number
- CN207115849U CN207115849U CN201720517084.5U CN201720517084U CN207115849U CN 207115849 U CN207115849 U CN 207115849U CN 201720517084 U CN201720517084 U CN 201720517084U CN 207115849 U CN207115849 U CN 207115849U
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- teaching
- gear
- mounting surface
- base
- demonstration instrument
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Abstract
The utility model discloses Dynamic Geographic demonstration instrument for teaching, belongs to teaching instrument field.The device includes base, motor and planetary mechanism；Base has bottom surface and mounting surface, cylindrical mounting groove is offered on the mounting surface, support bar is provided with the mounting surface, end set of the support bar away from the base has laser lamp, motor is arranged in mounting groove, it is of the prior art on season and the geographical teaching instrument that day alternates with night, it is more single to there is function, simulation is not objective, the problem of teaching efficiency difference, Dynamic Geographic demonstration instrument for teaching provided by the utility model, earth rotation is realized by planetary mechanism the synchronous realization revolved around the sun is enclosed with the earth, base is obliquely installed the relation for being capable of the preferable angle of simulation ecliptic plane and the equatorial plane, so that student is more readily understood.
Description
Technical field
It the utility model is related to teaching instrument field, more particularly to Dynamic Geographic demonstration instrument for teaching.
Background technology
In geographical teaching, student is simple to rely on for round the clock and the change procedure in season and rule are less susceptible to understand
The oral statement and written explanation of teacher, not readily understood and intuitive is not strong, therefore teaching efficiency is poor, exists in the prior art
Some teaching appliances, but its earth rotation is more not to have for axle center or directly rotation not in accordance with the earth's axis, can only represent that sunshine is straight
Penetrate between the tropic of north and south back and forth to represent the conversion in season, because its function is single, and many times with actual discrepancy
It is larger, therefore teaching efficiency is nor highly desirable.
In summary, of the prior art on season and the geographical teaching instrument that day alternates with night, it is more single function to be present,
Simulation is not objective, the problem of teaching efficiency difference.
Utility model content
The utility model provides Dynamic Geographic demonstration instrument for teaching, can solve it is of the prior art on season and round the clock
Alternate geographical teaching instrument, the problem of function is more single, and simulation is not objective, teaching efficiency difference be present.
Dynamic Geographic demonstration instrument for teaching, including base, motor and planetary mechanism；Base has bottom surface and mounting surface, institute
State and cylindrical mounting groove is offered on mounting surface, support bar is provided with the mounting surface, the support bar is away from the base
End set have a laser lamp, the laser lamp is fallen into mounting groove along the projection on the direction of the mounting surface
The heart；Motor is arranged in the mounting groove, and the axial line of the output shaft of the motor is arranged vertically with the mounting surface；Planet machine
Structure includes first gear, second gear and two connecting rods, and the both sides of the first gear and the second gear are coaxially disposed
There is boss, the connecting rod is arranged on the boss, the output of the boss on the lower surface of the first gear and the motor
Axle is connected, and the boss on upper surface in the second gear is connected with tellurion by ground axostylus axostyle.
More preferably, 23 ° of 26' angle is formed between the bottom surface and mounting surface.
More preferably, the gear ratio of the first gear and the second gear is 365:1.
Dynamic Geographic demonstration instrument for teaching provided by the utility model, earth rotation and the earth are realized by planetary mechanism
Enclose the synchronous realization revolved around the sun, base is obliquely installed the pass for being capable of the preferable angle of simulation ecliptic plane and the equatorial plane
System so that student is more readily understood.
Brief description of the drawings
Fig. 1 is Dynamic Geographic demonstration instrument for teaching structural representation one provided by the utility model；
Fig. 2 is Dynamic Geographic demonstration instrument for teaching structural representation two provided by the utility model；
Fig. 3 is Dynamic Geographic demonstration instrument for teaching structural representation three provided by the utility model.
Description of reference numerals：
10- bases, 11- bottom surfaces, 111- mounting surfaces, 12- support bars, 13- laser lamps, 20- motors, 21- first gears,
22- connecting rods, 23- second gears, 24- ground axostylus axostyle, 30- tellurions.
Embodiment
Below in conjunction with the accompanying drawings, an embodiment of the present utility model is described in detail, it is to be understood that this
The protection domain of utility model is not limited by embodiment.
As shown in Figure 1 to Figure 3, the Dynamic Geographic demonstration instrument for teaching that the utility model embodiment provides, including base 10,
Motor 20 and planetary mechanism；Base 10 has bottom surface 11 and mounting surface 111, and bottom surface 11 and mounting surface 111 are in 23 ° of 26' angles, with
The angle of ecliptic plane and the equatorial plane is simulated, cylindrical mounting groove is offered on mounting surface 111, support is provided with mounting surface 111
Bar 12, support bar 12 have bending section, and to avoid miscellaneous part, end set of the support bar 12 away from base 10 has laser lamp
13, laser lamp 13 falls into the center of mounting groove, the irradiation side of laser lamp 13 along the projection on the direction of mounting surface 111
To parallel with bottom surface 11；Motor 20 is arranged in mounting groove, axial line and the 111 vertical cloth of mounting surface of the output shaft of motor 20
Put；Planetary mechanism includes the both sides of first gear 21, second gear 23 and two connecting rods 22, first gear 21 and second gear 23
Boss is coaxially arranged with, the hole for accommodating boss is offered on connecting rod 22, connecting rod 22 is arranged on boss by the hole,
The hole wherein installed with the boss of first gear 21 is for tight fit or using spline fitted, to allow connecting rod 22 and first
The synchronous axial system of gear 21, while connecting rod 22 drives second gear 23 to be revolved round the sun around the axial line of first gear 21, first gear 21
Gear ratio with second gear 23 is 365:1, i.e. first gear 21 rotates a circle, and second gear 23 rotates 365 circles,
With simulation, day alternates with night and the year cycle, and during revolution, due to inclination angle, the light of laser lamp 13 be present
Alternately moved back and forth between the north and south tropic that can be on tellurion 30, to simulate the forming process in the four seasons, first gear 21
Boss on lower surface is connected with the output shaft of motor 20, and the boss on upper surface in second gear 23 passes through ground axostylus axostyle 24
Tellurion 30 is connected with, to realize that tellurion 30 can be kept and the synchronous axial system of second gear 23, day alternates with night with simulation.
Dynamic Geographic demonstration instrument for teaching provided by the utility model, earth rotation and the earth are realized by planetary mechanism
Enclose the lock in time revolved around the sun, base is obliquely installed the pass for being capable of the preferable angle of simulation ecliptic plane and the equatorial plane
System so that student is more readily understood.
Disclosed above is only several specific embodiments of the present utility model, and still, the utility model embodiment is not office
It is limited to this, the changes that any person skilled in the art can think of should all fall into the scope of protection of the utility model.
Claims (3)
1. Dynamic Geographic demonstration instrument for teaching, it is characterised in that including：
Base, it has bottom surface and mounting surface, and cylindrical mounting groove is offered on the mounting surface, is provided with the mounting surface
Support bar, end set of the support bar away from the base have laser lamp, and the laser lamp is along perpendicular to the mounting surface
Direction on projection fall into the center of mounting groove；
Motor, it is arranged in the mounting groove, and the axial line of the output shaft of the motor is arranged vertically with the mounting surface；
Planetary mechanism, it includes first gear, second gear and two connecting rods, and the two of the first gear and the second gear
Side is coaxially arranged with boss, and the connecting rod is arranged on the boss, boss and institute on the lower surface of the first gear
The output shaft for stating motor is connected, and the boss on upper surface in the second gear is connected with tellurion by ground axostylus axostyle.
2. Dynamic Geographic demonstration instrument for teaching as claimed in claim 1, it is characterised in that shape between the bottom surface and mounting surface
Into 23 ° of 26' angle.
3. Dynamic Geographic demonstration instrument for teaching as claimed in claim 1, it is characterised in that the first gear and described second
The gear ratio of gear is 365:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720517084.5U CN207115849U (en) | 2017-05-09 | 2017-05-09 | Dynamic Geographic demonstration instrument for teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720517084.5U CN207115849U (en) | 2017-05-09 | 2017-05-09 | Dynamic Geographic demonstration instrument for teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207115849U true CN207115849U (en) | 2018-03-16 |
Family
ID=61593701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720517084.5U Expired - Fee Related CN207115849U (en) | 2017-05-09 | 2017-05-09 | Dynamic Geographic demonstration instrument for teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207115849U (en) |
-
2017
- 2017-05-09 CN CN201720517084.5U patent/CN207115849U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180316 Termination date: 20190509 |