CN2501139Y - Demonstrator for earth rotation period - Google Patents
Demonstrator for earth rotation period Download PDFInfo
- Publication number
- CN2501139Y CN2501139Y CN 01228345 CN01228345U CN2501139Y CN 2501139 Y CN2501139 Y CN 2501139Y CN 01228345 CN01228345 CN 01228345 CN 01228345 U CN01228345 U CN 01228345U CN 2501139 Y CN2501139 Y CN 2501139Y
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- earth
- track
- demonstrator
- rotation cycle
- 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
Links
Images
Landscapes
- Instructional Devices (AREA)
Abstract
The utility model discloses an earth rotation period display instrument. An earth revolution orbit is arranged at the front lower part of the display instrument control stand. A rotary shaft which can roll in the orbit is arranged on the revolution orbit. An earth graphic board is fixedly connected in the front of the rotary shaft. A star support rod which is permanently perpendicular to the horizontal direction is connected on the rotary shaft. The other end of the star support rod is connected with a star graphic board. A central shaft is fixed at the upper part of the control stand. A sun graphic board is arranged on the central shaft. The utility model with a simple structure, easy observation, a strong visual impression is easy for analysis and comprehension and can manage operation in the process of explanation.
Description
The utility model relates to a kind of teaching aid, relates to a kind of earth rotation cycle demonstrator specifically.
The earth rotation cycle is because the object of reference difference mainly contains two cycles: one is object of reference " sidereal day " with a certain fixed star of sky, and one is object of reference " solar day " with the sun.By angle, more commentaries on classics 59 minutes on solar day than the sidereal day, by the time, at more 3 minutes 56 seconds on solar day than the sidereal day.This problem is the difficult point in the students ' understanding earth movements process.A high student's imagination and comprehension are still low, if only lecture with regard to literal in the textbook and figure, the student is difficult to understand.Now in the teaching process, when explaining this type of problem, common teaching of use wall chart is because we can't the Direct observation sun and the stroke of sidereal day, add that high student's astronomic knowledge and space imagination thinking ability are limited, general teaching methods are unsuitable for the analysis of this problem and explanation.
It is a kind of simple in structure that the purpose of this utility model is to provide, and is easy to observe, and intuitive is strong, is convenient to analysis and understanding, but the earth rotation cycle demonstrator that operation is demonstrated while explaining.
The purpose of this utility model is to realize by following technical scheme:
A kind of earth rotation cycle demonstrator, its structural feature is: open an earth 's orbit in demonstrator control frame front lower, one rotating shaft that can roll in orbit is installed on this revolution orbit, this rotating shaft front earth chart board that is fixedly connected, connect vertical with a horizontal direction all the time fixed star pole in the said rotating shaft, the other end of this fixed star pole connects the fixed star chart board, in said control frame top fixed center axis, sun chart board is installed on this central shaft.The sun that the utility model indicated maintains static, the earth rotates along revolution orbit, fixed star moves with the earth is parallel, when fixed star, the sun and the earth are located along the same line, rotate counterclockwise rotating shaft, the earth is by rotation counterclockwise and revolution, and fixed star moves right synchronously with the earth, at first be the upper transit of a certain meridian ellipse of the double process of the fixed star earth, promptly finished a sidereal day; Be rotated further rotating shaft, the just double upper transit through a certain meridian ellipse of the earth of the sun has promptly been finished a solar day; This process is the situation of space observation on the Northern Hemisphere, and promptly solar day is greater than the sidereal day.If clockwise rotate rotating shaft, the earth will revolve round the sun and rotation in the direction of the clock, and what demonstrated this moment is the earth movements situation that arrives in the Southern Hemisphere space observation, and observations is that solar day is greater than the sidereal day.
The demonstrator casing that only exposes chart board and track is installed in said control frame outside.The demonstrator casing is installed to be convenient to observe.
Said revolution orbit is a toothed track, comprise internal tooth track and external tooth track, what be meshed with this toothed track is the track gear that is installed in the rotating shaft, the movable slip link that connects in said rotating shaft, connect the weight that anti-sliding stop link rotates with rotating shaft below this slip link, this connects said fixed star pole above slip link.Shake rotating shaft, track gear in the rotating shaft moves along toothed track, though the slip link that is installed in the rotating shaft moves with rotating shaft, but should under the effect of weight, can not rotate by the slip link, so be installed in fixed star pole on the slip link and fixed star all the time perpendicular to surface level, be fixed on a certain direction of the earth.When track gear moved on internal tooth, the motion of fixed star, the sun and the earth and relative position situation were as mentioned above; When track gear was outside on the rack rails road, it was opposite with sense of rotation to revolve round the sun, and no matter the earth is to which direction revolution, and solar day is all less than the sidereal day.This kind situation does not exist in practice, and purpose is to establish for the space imagination of cultivating the student.
Between said central shaft and rotating shaft pivoted arm is installed, fixedly connected crawler belt on this pivoted arm connects the runner of controlling the crawler belt transmission on said control frame both sides.By shaking a runner, the control crawler belt moves, and pivoted arm fixing on the crawler belt moves, thereby the rotating shaft that drives the pivoted arm other end is moved along track.
On said pivoted arm extension adjustment device is installed, said extension adjustment device comprises telescopic and expansion link, connects by set screw between telescopic and the expansion link.
On said pivoted arm, extension adjustment device is installed, said retractor device comprises telescopic and expansion link, on said telescopic, fixedly mount tooth plate, connect rocking handle by bearing pin on this tooth plate, one end of this rocking handle connects expansion link, mounting spring in the rocking handle chamber of the other end of this rocking handle, controlling on the pull handle of this spring has the positioning tooth that is meshed with tooth plate.
Said revolution orbit is a toothed track, comprise internal tooth track and external tooth track, what be meshed with this toothed track is the track gear that is installed in the rotating shaft, on said control frame, slideway is installed, connect the slide plate that can on slideway, slide on this slideway, the slotted hole that connects rotating shaft is arranged, fixedly connected fixed star pole on the said slide plate on this slide plate.Along with moving of rotating shaft, because rotating shaft is installed in the slotted hole,, rotating shaft on slideway, moves so can driving slide plate, the fixed star pole on the slide plate is also moved with it, fixed star pole is parallel moves thereby make, and makes fixed star remain on a certain constant bearing of the earth.
One gear by the motor power drive is installed in said rotating shaft.
Connect the fixing magnetic chuck of earth chart board in the said rotating shaft.When needs conversion southern hemisphere and northern hemisphere, only need upset earth chart board, get final product in rotating shaft with the magnetic chuck suction then, simple to operation, save time.
Advantage of the present utility model is:
1, this instrument can react the stroke of " sidereal day " and " solar day " continuous, complete, intuitively, visually
Process.Become abstract in directly perceived, static state is dynamically, makes student's picture place oneself in the midst of the cosmic space real observation earth
Motion is the same, and original complicated problems has been oversimplified; Integrate intellectual, interesting, help training
Support student's spatial thinking ability, excite student's desire for knowledge.
2, earth apparent motion situation and the actual conditions demonstrated of the utility model are closely similar, and especially fixed star everywhere
The situation that ball moves similarly is that and then the observer is moving, and the actual response of fixed star apparent motion in the reality is true just
Sense is strong.
3, by observing the demonstration student to " sidereal day ", " solar day ", " upper transit ", " lower transit " these terms
Say and say abstract concept hard to understand, on the basis of perception, very easily just understood and remembered.
4, can apply in a flexible way according to the classroom needs, both can excite student's curiosity and aspiration to knowledge, can cultivate the student again
Divergent thinking, improve students ' quality.
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is a demonstration floor map of the present utility model;
Fig. 2 is the structural representation of an embodiment of the utility model;
Fig. 3 is the structural representation of another embodiment of the present utility model;
Fig. 4 is the synoptic diagram of the utility model control device;
As Fig. 1, shown in Figure 2, a kind of earth rotation cycle demonstrator, comprise demonstrator casing 1, demonstrator control frame 8 is installed in this demonstrator casing, open an earth 's orbit 2 in demonstrator control frame front lower, this revolution orbit is a toothed track 10, comprise internal tooth track and external tooth track, what be meshed with toothed track is track gear 15, this track gear center connects rotating shaft 14, this rotating shaft front is by the magnetic chuck earth chart board 3 that is fixedly connected, earth chart board is the polar stereographic projection planimetric map, one side is the Southern Hemisphere, another side is the Northern Hemisphere, the movable slip link 16 that connects in rotating shaft, connect weight 13 below this slip link, this weight can make the slip link move with rotating shaft, but can not rotate with rotating shaft, connect fixed star pole 4 above the slip link, the other end of this fixed star pole connects fixed star chart board 5, in said control frame top fixed center axis, sun chart board 6 is installed on this central shaft, between said central shaft and rotating shaft, be connected pivoted arm, fixedly connected crawler belt 20 on this pivoted arm connects the runner of controlling the crawler belt transmission on said control frame both sides, one of them runner is an active runner 18, another runner is driven runner 7, at active runner first line of a couplet catcher handle, extension adjustment device 9 is installed on said pivoted arm, extension adjustment device comprises telescopic 19 and expansion link 17, all have on telescopic and expansion link and regulate slotted hole 11, telescopic and expansion link are regulated fixing by regulating the set screw 12 of installing in the slotted hole.During demonstration, making initiatively by turning handle, runner rotates, crawler belt moves under the effect of two runners, be fixed on the pivoted arm swing on the crawler belt, the rotating shaft of the pivoted arm other end is when moving with pivoted arm, the gear of installing in the rotating shaft rotates under the effect of toothed track, rotated with rotating shaft by the fixing earth chart board of magnetic chuck this moment, finish the presentation process of earth rotation and revolution, because the slip link is installed in the rotating shaft, so the slip link moves with rotating shaft, the weight that the slip link connects below makes fixed star pole on the slip link and fixed star all the time perpendicular to surface level, at a certain fixed-direction of the earth.
Extension adjustment device can be as shown in Figure 4, fixed installation tooth plate 25 on telescopic, connect rocking handle 27 by bearing pin 26 on this tooth plate, one end of this rocking handle connects expansion link, mounting spring 29 in the rocking handle chamber of the other end of this rocking handle, controlling on the pull handle 28 of this spring has the positioning tooth 30 that is meshed with tooth plate.
Another embodiment of the present utility model changes into as shown in Figure 3 for the device with the control fixed star pole among the embodiment 1, slideway 21 is installed on controller, connect the slide plate 22 that can on slideway, slide on this slideway, the slotted hole 23 that connects rotating shaft is arranged, fixedly connected fixed star pole on the said slide plate on this slide plate.Along with moving of rotating shaft, because rotating shaft is installed in the slotted hole,, rotating shaft on slideway, moves so can driving slide plate, the fixed star pole on the slide plate is also moved with it.
The utility model can adopt motor power to drive rotating shaft and rotate, and a gear by the drive of motor 24 power is installed in said rotating shaft, and motor can adopt common electric machine, also can adopt remote-control motor.
Claims (9)
1, a kind of earth rotation cycle demonstrator, it is characterized in that: establish earth 's orbit (2) in demonstrator control frame (8) front lower, one rotating shaft that can roll in orbit (14) is installed on this revolution orbit, this rotating shaft front earth chart board (3) that is fixedly connected, connect a fixed star pole (4) in the said rotating shaft, the other end of this fixed star pole connects fixed star chart board (5), in said control frame top fixed center axis, sun chart board (6) is installed on this central shaft.
2, earth rotation cycle demonstrator according to claim 1 is characterized in that: the demonstrator casing (1) that only exposes chart board and track is installed in said control frame outside.
3, earth rotation cycle demonstrator according to claim 1, it is characterized in that: said revolution orbit is toothed track (10), comprise internal tooth track and external tooth track, what be meshed with this toothed track is the track gear (15) that is installed in the rotating shaft, the movable slip link (16) that connects in said rotating shaft, connect the weight (13) that anti-sliding stop link rotates with rotating shaft below this slip link, this connects said fixed star pole above slip link.
5, earth rotation cycle demonstrator according to claim 1 is characterized in that: between said central shaft and rotating shaft pivoted arm is installed, fixedly connected crawler belt (20) on this pivoted arm connects the runner of controlling the crawler belt transmission on said control frame both sides.
6, earth rotation cycle demonstrator according to claim 4, it is characterized in that: on said pivoted arm, extension adjustment device is installed, said extension adjustment device comprises telescopic (19) and expansion link (17), connects by set screw (12) between telescopic and the expansion link.
7, earth rotation cycle demonstrator according to claim 4, it is characterized in that: on said pivoted arm, extension adjustment device is installed, said retractor device comprises telescopic (19) and expansion link (17), put fixed installation tooth plate (25) said contracting, connect rocking handle (27) by bearing pin (26) on this tooth plate, one end of this rocking handle connects telescopic shaft, mounting spring (29) in the rocking handle chamber of the other end of this rocking handle, controlling on the pull handle (28) of this spring has the positioning tooth (30) that is meshed with tooth plate.
8, earth rotation cycle demonstrator according to claim 1, it is characterized in that: said revolution orbit is a toothed track, comprise internal tooth track and external tooth track, what be meshed with this toothed track is the track gear that is installed in the rotating shaft, slideway (21) is installed on said control frame, connect the slide plate (22) that can on slideway, slide on this slideway, the slotted hole (23) that connects rotating shaft is arranged, fixedly connected fixed star pole on the said slide plate on this slide plate.
9, earth rotation cycle demonstrator according to claim 1 is characterized in that: a gear by the drive of motor (24) power is installed in said rotating shaft.
10, earth rotation cycle demonstrator according to claim 1 is characterized in that: connect the fixing magnetic chuck of earth chart board in the said rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01228345 CN2501139Y (en) | 2001-09-02 | 2001-09-02 | Demonstrator for earth rotation period |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01228345 CN2501139Y (en) | 2001-09-02 | 2001-09-02 | Demonstrator for earth rotation period |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2501139Y true CN2501139Y (en) | 2002-07-17 |
Family
ID=33643486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01228345 Expired - Fee Related CN2501139Y (en) | 2001-09-02 | 2001-09-02 | Demonstrator for earth rotation period |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2501139Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109389891A (en) * | 2018-12-28 | 2019-02-26 | 安徽工程大学 | A kind of rational mechanics comprehensive experimental device and its experimental method |
| CN109686223A (en) * | 2019-02-02 | 2019-04-26 | 吉林师范大学 | The simulation comparison unit on solar day and sidereal day |
| CN110322771A (en) * | 2019-07-31 | 2019-10-11 | 佛山市奥迪斯传动科技有限公司 | Mechanical Composite Transmission Teaching instrument |
-
2001
- 2001-09-02 CN CN 01228345 patent/CN2501139Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109389891A (en) * | 2018-12-28 | 2019-02-26 | 安徽工程大学 | A kind of rational mechanics comprehensive experimental device and its experimental method |
| CN109686223A (en) * | 2019-02-02 | 2019-04-26 | 吉林师范大学 | The simulation comparison unit on solar day and sidereal day |
| CN109686223B (en) * | 2019-02-02 | 2024-03-01 | 吉林师范大学 | Simulation comparing device for sun day and sun day |
| CN110322771A (en) * | 2019-07-31 | 2019-10-11 | 佛山市奥迪斯传动科技有限公司 | Mechanical Composite Transmission Teaching instrument |
| CN110322771B (en) * | 2019-07-31 | 2024-05-14 | 佛山市奥迪斯传动科技有限公司 | Mechanical composite transmission demonstrator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107293209A (en) | Novel analog earth rotation and the teaching aid of revolution | |
| CN113035042A (en) | Aircraft attitude teaching presentation device | |
| CN2501139Y (en) | Demonstrator for earth rotation period | |
| CN107958625B (en) | Teaching device for simulating satellite rotation | |
| CN207571969U (en) | A kind of double drive formula day the moon celestial body simulation motion demonstrating instrument | |
| CN113628501A (en) | Intelligent teaching demonstration equipment for art teaching | |
| CN210069337U (en) | Think projecting apparatus that political affairs theory class was used | |
| CN204759840U (en) | Multiaspect orthographic projection descriptive geometry device of imparting knowledge to students | |
| CN213656205U (en) | Classroom teaching recording device convenient to adjust | |
| CN105070153A (en) | Multi-surface orthographic projection drawing geometry teaching instrument | |
| CN2606419Y (en) | Multifunctional solar system astroscope | |
| CN219418351U (en) | Star retrograde demonstrating device | |
| CN206040082U (en) | Rotatory inverted pendulum | |
| CN212365284U (en) | Interactive device for simulating simple pendulum movement | |
| CN1385819A (en) | Chinese type earth function demonstration instrument | |
| CN211181316U (en) | Model display device for mathematical education | |
| CN214541080U (en) | Auxiliary device for distance education and training | |
| CN2512063Y (en) | Demonstration device for the principle of conservation of angular momentum | |
| CN220205243U (en) | Display platform | |
| CN213123604U (en) | 180 degree holographic phantom imaging electric 45 degree opening and closing automation device | |
| CN213518824U (en) | Teaching display device for software engineering | |
| CN1501332A (en) | Multifunctional astronomical instrument for demonstrating the solar system | |
| CN214175458U (en) | Mathematical modeling simulation demonstration device | |
| CN220509592U (en) | Windmill model for teaching | |
| CN211742322U (en) | Intelligent robot for teenager teaching |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |