CN203503233U - Twilight demonstrator - Google Patents
Twilight demonstrator Download PDFInfo
- Publication number
- CN203503233U CN203503233U CN201320409934.1U CN201320409934U CN203503233U CN 203503233 U CN203503233 U CN 203503233U CN 201320409934 U CN201320409934 U CN 201320409934U CN 203503233 U CN203503233 U CN 203503233U
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- CN
- China
- Prior art keywords
- fixed
- stepping motor
- stepper motor
- sphere
- sun
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a twilight demonstrator, comprising a base 1, a stepping motor I fixed to the base 1, a support arm fixed to the output shaft of the stepping motor I, a stepping motor II slantly fixed to the rear end of the support arm, an earth sphere fixed to the output shaft of the stepping motor II and a sun sphere arranged above the stepping motor I; a solar term dial is fixed under the sun sphere; the earth sphere is fixedly provided with a pointer used for pointing solar terms. The stepping motor I drives the support arm to rotate in the circumferential direction, and thereby the earth sphere can revolute surrounding the sun sphere, and the stepping motor II drives the earth sphere to rotate; the matching between a revolution speed and a rotation speed can be realized through the rotating speeds of the stepping motor I and the stepping motor II. The twilight demonstrator has the characteristics of simple structure and long service life.
Description
Technical field
The utility model relates to a kind of geography class teaching aid, is specifically related to a kind of Instrument for surveying solar time and azimuth.
Background technology
As everyone knows, Instrument for surveying solar time and azimuth be geography class teacher for demonstrate the earth round the clock, a kind of instruments used for education of Four seasons change.But existing Instrument for surveying solar time and azimuth earth rotation and the earth enclose that to revolve around the sun be all to adopt gear structure transmission, its complex structure, easily damages in use procedure.
Summary of the invention
The utility model, in order to overcome the deficiency of above technology, provides a kind of simple in structure, service-strong Instrument for surveying solar time and azimuth
The utility model overcomes the technical scheme that its technical matters adopts:
This Instrument for surveying solar time and azimuth, comprise base, be fixed on stepper motor I on base 1, be fixed on sway brace on stepper motor I output shaft, tilt to be fixed on the stepper motor II on sway brace end, the sun spheroid that is fixed on the ground ball on stepper motor II output shaft and is arranged at stepper motor I top, described sun spheroid below is fixed with solar term index dial, is fixed with the pointer that is used to indicate solar term on described ground ball.
Also comprise the camera and the VGA video output terminal that are fixed on sun spheroid top, described camera, VGA video output terminal are all connected in single-chip microcomputer.
The beneficial effects of the utility model are: stepper motor I drives sway brace circumferencial direction to rotate, thereby ground ball can revolve round the sun around sun spheroid, stepper motor II drives ground ball rotation, and by the rotating speed of stepper motor I and stepper motor II, can realize the coupling of revolution, rotational velocity.This Instrument for surveying solar time and azimuth is simple in structure, long service life.
Accompanying drawing explanation
Fig. 1 is main TV structure schematic diagram of the present utility model;
Fig. 2 is control system theory diagram of the present utility model;
In figure, 1. base 2. stepper motor I3. solar term index dial 4. sun spheroid 5. camera 6. pointer 7. ground ball 8. stepper motor II9. sway braces.
Embodiment
Below in conjunction with accompanying drawing 1,2 pairs of the utility model of accompanying drawing, be described further.
This Instrument for surveying solar time and azimuth, comprise base 1, be fixed on stepper motor I2 on base 1, be fixed on sway brace 9 on stepper motor I2 output shaft, tilt to be fixed on the stepper motor II8 on sway brace 9 ends, the sun spheroid 4 that is fixed on the ground ball 7 on stepper motor II8 output shaft and is arranged at stepper motor I2 top, described sun spheroid 4 belows are fixed with solar term index dial 3, are fixed with the pointer 6 that is used to indicate solar term on described ground ball 7.Stepper motor I2 drives sway brace 9 circumferencial directions to rotate, thereby ground ball 7 can be around 4 revolution of sun spheroid, stepper motor II8 drives ground ball 7 rotations, and by the rotating speed of stepper motor I2 and stepper motor II8, can realize the coupling of revolution, rotational velocity.This Instrument for surveying solar time and azimuth is simple in structure, long service life.
Because Instrument for surveying solar time and azimuth is less, rear row's student cannot see Instrument for surveying solar time and azimuth demonstration clearly and in the classroom of school, projector or large-screen receiver is installed now, therefore can also comprise camera 5 and the VGA video output terminal that is fixed on sun spheroid 4 tops, described camera 5, VGA video output terminal are all connected in single-chip microcomputer.Projector and big screen panel TV can be connected in VGA video output terminal by VGA line, true this Instrument for surveying solar time and azimuth running picture of taking of Single-chip Controlling camera 5, and by projector or television for play, facilitate student to examine Instrument for surveying solar time and azimuth, quality of instruction is improved.
Claims (2)
1. an Instrument for surveying solar time and azimuth, it is characterized in that: comprise base (1), be fixed on stepper motor I (2) on base (1), be fixed on sway brace (9) on stepper motor I (2) output shaft, tilt to be fixed on the stepper motor II (8) on sway brace (9) end, the sun spheroid (4) that is fixed on the ground ball (7) on stepper motor II (8) output shaft and is arranged at stepper motor I (2) top, described sun spheroid (4) below is fixed with solar term index dial (3), is fixed with the pointer (6) that is used to indicate solar term on described ground ball (7).
2. Instrument for surveying solar time and azimuth according to claim 1, is characterized in that: also comprise the camera (5) and the VGA video output terminal that are fixed on sun spheroid (4) top, described camera (5), VGA video output terminal are all connected in single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320409934.1U CN203503233U (en) | 2013-07-10 | 2013-07-10 | Twilight demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320409934.1U CN203503233U (en) | 2013-07-10 | 2013-07-10 | Twilight demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203503233U true CN203503233U (en) | 2014-03-26 |
Family
ID=50334193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320409934.1U Expired - Fee Related CN203503233U (en) | 2013-07-10 | 2013-07-10 | Twilight demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203503233U (en) |
-
2013
- 2013-07-10 CN CN201320409934.1U patent/CN203503233U/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 |
Granted publication date: 20140326 Termination date: 20140710 |
|
| EXPY | Termination of patent right or utility model |