Earth rotation and revolution model

Abstract

The utility model relates to an earth rotation and revolution model, which comprises a working table and a large turntable rotatably arranged on the working table, a solar simulation lamp is arranged in the middle of the large turntable, a small turntable is arranged at the edge of the large turntable, the small turntable is rotatably matched with the large turntable, and a globe assembly is mounted on the small turntable. The earth rotation demonstration device is simple in structure and convenient to operate, can vividly demonstrate rotation and revolution of the earth, enables teaching to be vivid, increases learning interest of students, and improves teaching quality.

Description

Technical Field

[0001] This utility model relates to a model of Earth's rotation and revolution. Background Technology

[0002] The Earth's rotation and revolution are important knowledge points in geography. In current teaching, they mainly rely on teachers' oral explanations or explanations with the help of wall charts. However, this cannot vividly reproduce the Earth's rotation and revolution, nor can it vividly reproduce the alternation of day and night and the changes of seasons. The teaching is monotonous and boring, and it cannot actively motivate students, resulting in poor teaching results. Utility Model Content

[0003] This invention addresses the aforementioned problems by providing a model of Earth's rotation and revolution that vividly demonstrates these phenomena, making teaching more engaging, increasing students' interest, and ensuring teaching quality.

[0004] This utility model is constructed as follows: it includes a workbench and a large turntable rotatably mounted on the workbench. A solar simulation lamp is provided in the center of the large turntable, and a small turntable is provided at the edge of the large turntable. The small turntable rotates and cooperates with the large turntable, and a globe component is mounted on the small turntable.

[0005] Furthermore, the large turntable includes a lower large disc body and an upper rotating body sleeved on the lower large disc body. The upper rotating body rotates in conjunction with the lower large disc body. A flat plate is mounted on the upper rotating body, and a support body is provided below the lower large disc body.

[0006] Furthermore, the small turntable includes an upper rotating body and a lower small disc body, with a rotating shaft provided in the middle of the lower small disc body, and the rotating shaft rotatably engaging with the upper rotating body.

[0007] Furthermore, the globe assembly includes a mounting base mounted on a small turntable, a globe positioned above the mounting base, a fixed shaft passing through the center of the globe, a motor output shaft located within the mounting base at the bottom of the fixed shaft, and a shadow measuring tag positioned on the outer side of the globe.

[0008] Furthermore, the globe is tilted, and the corresponding fixed shaft and motor are also tilted, with the upper surface of the mounting base being an inclined plane.

[0009] Furthermore, the globe is vertically positioned, and the corresponding fixed axis and motor are also vertically positioned, while the upper surface of the mounting base is a horizontal plane.

[0010] Furthermore, the flat plate is connected to the solar simulation lamp via a column.

[0011] Furthermore, ball bearings are provided between the upper rotating body and the lower large disc body.

[0012] Furthermore, seasonal photo paper is provided between the workbench and the large turntable, with spring, summer, autumn and winter markings on the top, left, bottom and right sides of the photo paper, respectively.

[0013] Furthermore, a North Star direction indicator is provided on the right side of the winter sign, and an arrow indicator is provided on the upper surface of the small turntable, which can always point to the North Star direction indicator.

[0014] Compared with existing technologies, this utility model has the following beneficial effects: This device has a simple structure, reasonable design, and is easy to use. It can vividly demonstrate the Earth's rotation and revolution, making teaching more engaging and increasing students' learning interest, thus ensuring teaching quality. By installing the globe component on a small turntable and turning on the motor of the small turntable, the motor drives the globe on the small turntable to rotate. The solar simulation lamp is installed on the pillar in the center of the large turntable. By pressing the small turntable, the large turntable is rotated, thus simulating the phenomena of rotation and revolution. Throughout the process, the arrow on the small turntable must be kept pointing in the direction of the North Star. Toothpicks are inserted into the globe, and a ruler is attached. When the globe reaches the seasonal point, the arrow on the small turntable is adjusted to point in the direction of the North Star. By observing the length of the toothpick shadow, the changing pattern of the shadow length in each season can be discovered. Of course, it is worth noting that the motor of the small turntable can also be left off, and the globe can be rotated manually, making it convenient for students to read the length of the toothpick shadow.

[0015] Furthermore, by replacing and comparing two different globe components, one with a tilted axis and the other with a vertical axis, it was found that when the axis was vertical, the shadow length of the toothpick was the same in all four seasons, while when the axis was tilted, the shadow length of the toothpick was different in all four seasons, thus proving that the axis of the earth is tilted. Attached Figure Description

[0016] Figure 1 This is a top view of an embodiment of the present utility model;

[0017] Figure 2 for Figure 1 Sectional view AA in the middle;

[0018] Figure 3 This is a bottom view of the large turntable in an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the globe assembly according to Embodiment 1 of this utility model;

[0020] Figure 5 This is a schematic diagram of the globe assembly according to Embodiment 2 of this utility model;

[0021] Figure 6 This is a top view of the workbench and seasonal photo paper in an embodiment of this utility model. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 1-6 As shown in the embodiment of this utility model, a model of Earth's rotation and revolution is provided, including a workbench 1 and a large turntable 2 rotatably mounted on the workbench. A solar simulation lamp 3 is provided in the center of the large turntable. The solar simulation lamp can be a flashlight. A small turntable 4 is provided at the edge of the large turntable. The small turntable rotates in coordination with the large turntable. A globe component 5 is mounted on the small turntable.

[0024] To use, install the globe component onto the small turntable, turn on the motor of the small turntable, and the motor will drive the globe on the small turntable to rotate. The solar simulation lamp is installed on the pillar in the center of the large turntable. By pressing the small turntable, the large turntable will rotate, thus simulating the phenomenon of rotation and revolution. Throughout the process, ensure that the arrow on the small turntable points in the direction of the North Star. Toothpicks are inserted into the globe and a ruler is attached. When the globe reaches the seasonal point, adjust the direction of the arrow on the small turntable to point in the direction of the North Star. By observing the length of the toothpick shadow, you can discover the changing pattern of the shadow length in the four seasons.

[0025] Of course, it is worth noting that the motor of the small turntable can also be left off. By manually controlling the rotation of the globe, students can easily read the shadow length of the toothpick.

[0026] In this embodiment of the utility model, the large turntable 2 includes a lower large disc body 201 and an upper rotating body 202 sleeved on the lower large disc body. The upper rotating body is rotatably engaged with the lower large disc body. A flat plate 203 is installed on the upper rotating body. The flat plate can be a KT board. The small turntable is installed on the upper side of the flat plate. A support body 204 is provided below the lower large disc body. The support body of the lower large disc body is connected to the workbench.

[0027] In this embodiment of the utility model, an annular groove 205 is provided below the upper rotating body, and the lower large disc is annular and is fitted inside the annular groove of the upper rotating body. When the lower large disc is in a fixed state, the upper rotating body can rotate along the lower large disc.

[0028] To ensure smoother rotation of the upper rotating body, ball bearings 206 are provided between the upper rotating body and the lower large disc.

[0029] In this embodiment of the utility model, the small turntable 4 includes an upper rotating body 401 and a lower small disc body 402. The lower small disc body can be fixed on the flat plate of the large turntable. A rotating shaft 403 is provided in the middle of the lower small disc body. The rotating shaft is rotatably engaged with the upper rotating body, that is, the lower small disc body is fixed and the upper rotating body rotates relative to the lower small disc body. In order to make the upper rotating body rotate more smoothly, a ball bearing 404 is also provided between the upper rotating body and the lower small disc body.

[0030] Of course, a small turntable can also be constructed using the same structure as a large turntable. If a large turntable is used, the size of the small turntable is reduced.

[0031] In this embodiment of the utility model, the globe assembly 5 includes a mounting base 501 mounted on a small turntable, a globe 502 disposed above the mounting base, a fixed shaft 503 passing through the middle of the globe, a motor 504 disposed inside the mounting base, and the lower part of the fixed shaft connected to the output shaft of the motor disposed inside the mounting base. A shadow measuring stick 505 is disposed on the outside of the globe. The shadow measuring stick can be a toothpick. A toothpick insertion slot is opened on the globe, which can be opened at the Fujian Province position on the globe. Then, the toothpick is inserted into the toothpick insertion slot. A scale can be attached to the globe at the position corresponding to the toothpick to measure the shadow length of the toothpick.

[0032] A power supply box 506 is provided on the outside of the aforementioned mounting base. The power supply box is electrically connected to the motor to supply power to the motor.

[0033] In the first embodiment of this utility model, the globe is tilted, and the corresponding fixed shaft and motor are also tilted. The upper surface of the mounting base is an inclined plane; the fixed shaft is equivalent to the earth axis.

[0034] In the second embodiment of this utility model, the globe is set vertically, and the corresponding fixed axis and motor are also set vertically. The upper surface of the mounting base is a horizontal plane; the fixed axis is equivalent to the earth axis.

[0035] Two different globe components, one with a tilted axis and the other with a vertical axis, were used. When the axis was vertical, the shadow length of the toothpick was the same in all four seasons. When the axis was tilted, the shadow length of the toothpick was different in all four seasons, thus proving that the axis of the earth is tilted.

[0036] In this embodiment of the invention, the flat plate and the solar simulation lamp are connected by a column 6.

[0037] In this embodiment of the utility model, a four-season photo paper 7 is provided between the workbench and the large turntable, and the top, left, bottom and right sides of the four-season photo paper are respectively marked with spring, summer, autumn and winter.

[0038] In this embodiment of the utility model, a North Star direction indicator 8 is provided on the right side of the winter indicator, and an arrow indicator 9 is provided on the upper surface of the small turntable. When the globe rotates and the large turntable is rotated by controlling the small turntable to rotate, the arrow indicator on the small turntable must always point to the North Star direction indicator. Only by ensuring that the yellow arrow indicator always points to the North Star direction can the Earth's axis always point to the North Star direction during the entire revolution process.

[0039] Unless otherwise stated, if any of the technical solutions disclosed in this utility model discloses a numerical range, then the disclosed numerical range is a preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is merely one among many feasible numerical values ​​that has a more obvious or representative technical effect. Because there are many numerical values, it is impossible to list them all. Therefore, this utility model discloses only some numerical values ​​to illustrate the technical solutions of this utility model. Furthermore, the numerical values ​​listed above should not constitute a limitation on the scope of protection of this utility model.

[0040] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model above include states or shapes that are similar to, close to, or approximate with them.

[0041] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A model of Earth's rotation and revolution, characterized in that, It includes a workbench and a large turntable that is rotatably mounted on the workbench. A solar simulation lamp is provided in the center of the large turntable, and a small turntable is provided at the edge of the large turntable. The small turntable rotates and cooperates with the large turntable, and a globe component is mounted on the small turntable.

2. The Earth's rotation and revolution model according to claim 1, characterized in that, The large turntable includes a lower large disc body and an upper rotating body sleeved on the lower large disc body. The upper rotating body rotates in conjunction with the lower large disc body. A flat plate is installed on the upper rotating body, and a support body is provided below the lower large disc body.

3. The Earth's rotation and revolution model according to claim 1, characterized in that, The small turntable includes an upper rotating body and a lower small disc. A rotating shaft is provided in the middle of the lower small disc, and the rotating shaft is rotatably engaged with the upper rotating body.

4. The Earth's rotation and revolution model according to claim 1, characterized in that, The globe assembly includes a mounting base mounted on a small turntable, a globe positioned above the mounting base, a fixed shaft passing through the middle of the globe, a motor output shaft connected below the fixed shaft to the mounting base, and a shadow measuring tag positioned on the outside of the globe.

5. A model of Earth's rotation and revolution according to claim 4, characterized in that, The globe is tilted, and the corresponding fixed shaft and motor are also tilted. The upper surface of the mounting base is an inclined surface.

6. A model of Earth's rotation and revolution according to claim 4, characterized in that, The globe is set vertically, and the corresponding fixed axis and motor are also set vertically. The upper surface of the mounting base is a horizontal plane.

7. A model of Earth's rotation and revolution according to claim 2, characterized in that, The flat plate is connected to the solar simulation lamp via a column.

8. A model of Earth's rotation and revolution according to claim 2, characterized in that, Ball bearings are provided between the upper rotating body and the lower large disc.

9. A model of Earth's rotation and revolution according to claim 1, characterized in that, The workbench and the large turntable are provided with seasonal photo paper, and the top, left, bottom and right sides of the seasonal photo paper are marked with spring, summer, autumn and winter respectively.

10. A model of Earth's rotation and revolution according to claim 9, characterized in that, A North Star direction indicator is provided on the right side of the winter sign, and an arrow indicator is provided on the upper surface of the small turntable, which can always point to the North Star direction indicator.

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