Astronomical demonstration device

Abstract

The application discloses an astronomical demonstration device which comprises a base, a sun demonstration piece, a bearing seat, an earth demonstration piece, a moon demonstration piece, a sky dome assembly and a revolution driving device. The sun demonstration piece is arranged on the base, and the bearing seat is movably arranged on the base. The earth demonstration piece is arranged on the bearing seat, and the moon demonstration piece is arranged on the bearing seat. The sky dome assembly is arranged on the bearing seat and is used for surrounding the earth demonstration piece and the moon demonstration piece. The revolution driving device is connected with the bearing seat and is used for driving the bearing seat, the earth demonstration piece, the moon demonstration piece and the sky dome assembly to revolve around the sun demonstration piece. Compared with common three-ball devices or celestial globes, more astronomical phenomena can be demonstrated. In the demonstration process, the bearing seat, the earth demonstration piece, the moon demonstration piece and the sky dome assembly can be driven by the revolution driving device to revolve around the sun demonstration piece, so that the astronomical phenomenon that the earth and the moon revolve around the sun can be demonstrated.

Description

Technical Field

[0001] This application relates to the field of astronomical demonstration equipment technology, specifically to an astronomical demonstration device. Background Technology

[0002] "The sun rises and the moon sets, spring goes and autumn comes"—astronomical phenomena caused by the movement of the sun, moon, and constellations frequently appear in ancient poems and are ever-present in modern life. The resulting changes in the celestial sphere and the alternation of seasons are closely related to human production and daily life. Astronomical demonstration equipment can be used in astronomical teaching and popular science exhibitions to demonstrate and explain the changes in the sun, moon, constellations, and celestial sphere. However, existing astronomical demonstration equipment is either configured as a three-sphere instrument to demonstrate the relative positions and movements of the sun, earth, and moon, or as a celestial globe to demonstrate the relative positions and movements of constellations and the earth. This limits the content that a single astronomical demonstration device can display and therefore needs improvement. Utility Model Content

[0003] The main technical problem this invention addresses is that existing astronomical demonstration equipment is typically configured as a celestial globe or a trisphere, which limits the content that a single astronomical demonstration device can display.

[0004] One embodiment provides an astronomical demonstration device, comprising: Base; A solar demonstration component, wherein the solar demonstration component is disposed on the base; The support seat is movably disposed on the base; An Earth demonstration component, wherein the Earth demonstration component is disposed on the support base; A lunar demonstrator, which is mounted on the support. A celestial canopy assembly, mounted on the support base, is used to demonstrate a star map; the celestial canopy assembly is used to surround the Earth demonstrator and the Moon demonstrator. And a revolution drive device, which is connected to the carrier and is used to drive the carrier, the Earth demonstration piece, the Moon demonstration piece and the celestial canopy assembly to revolve around the Sun demonstration piece.

[0005] In one embodiment, the first axis, the second axis, and the third axis are three mutually perpendicular axes in space; the revolution drive device includes a revolution rotating component, a revolution transmission mechanism, and a revolution drive component; the revolution rotating component is rotatably mounted on the base, the revolution drive component is mounted on the base, and the revolution transmission mechanism drives the revolution drive component and the revolution rotating component, so that the revolution drive component can drive the revolution rotating component to rotate around the second axis through the revolution transmission mechanism; the support seat is connected to the revolution rotating component, and when the revolution rotating component rotates around the second axis, it drives the support seat, the Earth demonstration component, the Moon demonstration component, and the sky curtain assembly to revolve around the Sun demonstration component.

[0006] In one embodiment, the revolution transmission mechanism includes a revolution gear and a revolution rack, the revolution rack is connected to the revolution rotating component, the revolution gear is connected to the revolution driving component, the revolution gear meshes with the revolution rack, and the revolution driving component is used to drive the revolution gear to rotate, so as to drive the revolution rack and the revolution rotating component to rotate around the second axis; the revolution driving component is configured as a manual driving component or an electric driving component.

[0007] In one embodiment, the system further includes an opening / closing drive device. The dome assembly includes a plurality of dome components arranged circumferentially along the Earth demonstration component. The dome components are rotatably connected to the support base. The dome components are rotatable between a closed position and an open position, and can rotate around the Earth demonstration component. When the dome component is in the closed position, it surrounds the Earth demonstration component circumferentially. When the dome component is in the open position, it exposes the Earth demonstration component. The opening / closing drive device drives the plurality of dome components to rotate around the Earth demonstration component circumferentially, and drives the plurality of dome components to reciprocate between the closed position and the open position sequentially.

[0008] In one embodiment, the support base includes a first support platform and a second support platform, the second support platform being rotatably disposed on the first support platform, the earth demonstration component being connected to the first support platform, and the canopy component being rotatably connected to the second support platform; The opening and closing drive device includes an opening and closing transmission component, a first opening and closing guide component, and a second opening and closing guide component. One end of the opening and closing transmission component is connected to the second support platform, and the first opening and closing guide component and the second opening and closing guide component are spaced apart on the first support platform. The opening and closing transmission component is used to drive the second support platform to rotate. When the second support platform rotates, it drives the canopy component to rotate around the spherical demonstration component and alternately pass through the first opening and closing guide component and the second opening and closing guide component. When the canopy component passes through the first opening and closing guide component, the first opening and closing guide component guides the canopy component to rotate towards the open position. When the canopy component passes through the second opening and closing guide component, the second opening and closing guide component guides the canopy component to rotate towards the closed position.

[0009] In one embodiment, the canopy component includes a canopy panel and a connecting rod. One end of the connecting rod is connected to the canopy panel, and the other end is rotatably connected to the second support platform. The connecting rod can drive the canopy panel to rotate in a first plane perpendicular to the second support platform, and the ends of multiple connecting rods connected to the second support platform are arranged in a circle on the second support platform. When the canopy component passes the first opening and closing guide, the first opening and closing guide contacts the connecting rod portion to drive the canopy panel to move away from the Earth demonstration component in the first plane to the open position; when the canopy component passes the second opening and closing guide, the second opening and closing guide contacts the connecting rod portion to drive the canopy panel to move closer to the Earth demonstration component in the first plane to the closed position.

[0010] In one embodiment, the first opening and closing guide includes an opening push block, the opening push block having an opening push surface, the opening push surface gradually moving away from the Earth demonstration component along the circumference of the Earth demonstration component; the opening push surface is used to drive the connecting rod portion to rotate away from the Earth demonstration component when in contact with the connecting rod portion; The second opening and closing guide includes a closing push block, which has a first closing push surface and a second closing push surface. Both the first closing push surface and the second closing push surface are configured as inclined surfaces in the direction of gravity. The first closing push surface is disposed at the bottom of the second closing push surface, and the second closing push surface extends close to the Earth demonstration piece. The connecting rod is configured to contact the first closing pushing surface and the second closing pushing surface in sequence. The first closing pushing surface is used to drive the canopy component to rotate from the open position to the closed position by a first preset angle, and the second closing pushing surface is used to drive the canopy component to continue rotating to the closed position.

[0011] In one embodiment, the system further includes an equatorial orbit component, an ecliptic orbit component, and an orbital drive device. The equatorial orbit component is disposed on the support base and surrounds the Earth demonstration component to demonstrate the equator. The ecliptic orbit component is rotatably connected to the support base and is capable of rotating between a first included angle position and a second included angle position. When the ecliptic orbit component rotates to the first included angle position, it forms a first preset angle with the equatorial orbit component. When the ecliptic orbit component moves to the second included angle position, it forms a second preset angle with the equatorial orbit component. The orbital drive device is used to drive the ecliptic orbit component to reciprocate between the first included angle position and the second included angle position.

[0012] In one embodiment, the support base includes a base body and a support bracket. The Earth demonstration component is rotatably mounted on the base body, and the support bracket is connected to the base body and extends around the base body. The equatorial orbit component is fixedly connected to the support bracket, and the ecliptic orbit component is rotatably connected to the support bracket. The support bracket is arranged around a first axis, and the equatorial orbit component is arranged around a second axis. The ecliptic orbit component is disposed within the space enclosed by the support bracket and the equatorial orbit, and the ecliptic orbit component rotates around a third axis. The first axis, the second axis, and the third axis are three mutually perpendicular axes in space. The track drive device includes a track drive component, a track transmission component, track rollers, and track gears. The track drive component is used to rotate around the second axis under the action of an external force. The track drive component has a drive groove arranged around the second axis, and the drive has continuous undulation changes in the direction along the second axis. The track transmission component is movably mounted on the support bracket. One end of the track transmission component is connected to the track roller, and the other end has a track transmission rack. The track roller is movably mounted in the drive groove. The track gear is connected to the ecliptic track component and meshes with the track transmission rack. When the track drive component rotates around the second axis, it drives the track roller to move in the drive groove, thereby driving the ecliptic track component to rotate around the third axis.

[0013] In one embodiment, the device further includes a rotation drive mechanism. The support base includes a first support platform and a second support platform, with the second support platform rotatably disposed on the first support platform. The rotation drive mechanism is used to drive the Earth demonstration object to rotate. The rotation drive device includes a rotation drive component, a rotation transmission assembly, a second planetary gear mechanism, a third planetary gear mechanism, and an Earth rotation axis. The rotation drive component is used to rotate around the second axis under the action of an external force. The rotation transmission component is provided with a ring-shaped rotation transmission rack. The rotation transmission assembly, the second planetary gear mechanism, the third planetary gear mechanism, and the Earth rotation axis are connected to the first support platform. The rotation transmission assembly includes a rotation transmission shaft, a first rotation transmission gear, and a second rotation transmission gear. One end of the rotation transmission shaft is provided with the first rotation transmission gear, and the other end is provided with the second rotation transmission gear. The first rotation transmission gear meshes with the rotation transmission rack, and the second rotation transmission gear is connected to the second planetary gear mechanism. The third planetary gear mechanism is stacked on top of the second planetary gear mechanism. One end of the Earth's rotation axis is connected to the third planetary gear mechanism for transmission, and the other end is connected to the Earth demonstration piece. The self-rotation drive and the track drive are configured as the same component.

[0014] According to the astronomical demonstration device of the above embodiment, the device includes a base, a solar demonstrator, a support base, an Earth demonstrator, a lunar demonstrator, a celestial canopy assembly, and a revolution drive device. The solar demonstrator is mounted on the base, and the support base is movably mounted on the base. The Earth demonstrator and the lunar demonstrator are mounted on the support base. The celestial canopy assembly is mounted on the support base and is used to display star charts; the celestial canopy assembly surrounds the Earth and lunar demonstrator. The revolution drive device is connected to the support base and is used to drive the support base, the Earth demonstrator, the lunar demonstrator, and the celestial canopy assembly to revolve around the solar demonstrator. When using the astronomical demonstration device, the solar demonstrator demonstrates the sun, the Earth demonstrator demonstrates the earth, the lunar demonstrator demonstrates the moon, and the celestial canopy assembly demonstrates star charts, enabling the demonstration of more astronomical phenomena compared to ordinary three-sphere or celestial globes. During the demonstration, the revolution drive device can also drive the support base, the Earth demonstrator, the lunar demonstrator, and the celestial canopy assembly to revolve around the solar demonstrator, thereby demonstrating the astronomical phenomenon of the Earth and the moon revolving around the sun. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an astronomical demonstration device when the canopy assembly is turned on, according to one embodiment of this application. Figure 2 This is a schematic diagram of the structure of an astronomical demonstration device when the canopy assembly is closed, according to one embodiment of this application. Figure 3 This is a schematic diagram of the structure of the base and the revolution drive device in one embodiment of this application; Figure 4This is an exploded view of the base and the revolution drive device in one embodiment of this application; Figure 5 This is a schematic diagram of the structure of an astronomical demonstration device with a canopy component from one perspective in one embodiment of this application; Figure 6 This is a schematic diagram of the structure of an astronomical demonstration device with a canopy assembly from another perspective in one embodiment of this application; Figure 7 This is a schematic diagram of the structure of an astronomical demonstration device with an equatorial orbit component and an ecliptic orbit component in one embodiment of this application; Figure 8 This is an exploded view of an astronomical demonstration device with an equatorial orbit component and an ecliptic orbit component from one perspective in one embodiment of this application. Figure 9 This is an exploded view of an astronomical demonstration device with an equatorial orbit component and an ecliptic orbit component from another perspective in one embodiment of this application; Figure 10 This is a schematic diagram of the structure of a one-way transmission mechanism in one embodiment of this application; Reference numerals: 100, base; 110, base transmission rack; 200, sun demonstration component; 300, earth demonstration component; 400, moon demonstration component; 500, canopy assembly; 510, canopy component; 511, canopy panel; 512, connecting rod; 520, first latching component; 530, second latching component; 540, dome component; 600, revolution drive device; 610, revolution rotating component; 620, revolution transmission mechanism; 621, revolution gear; 622, revolution rack; 630, revolution drive component; 700, opening and closing drive device; 710, opening and closing transmission component; 720, first opening and closing guide component; 721, opening push block; 722, opening push surface; 730. Second opening / closing guide; 731, closing push block; 732, first closing push surface; 733, second closing push surface; 740, first planetary gear mechanism; 741, first sun gear; 742, first planetary gear; 743, first gear carrier; 800, bearing seat; 810, first bearing platform; 820, second bearing platform; 830, seat body; 840, bearing bracket; 900, equatorial track component; 910, second through hole; 1000, ecliptic track component; 1010, first through hole; 1100, track drive device; 1110, track drive component; 1111, drive groove; 1120, track transmission component; 1121, track transmission rack; 1130, track... 1140, Track roller; 1200, Terminator demonstration piece; 1300, Lunar drive device; 1310, Lunar drive rack; 1320, One-way transmission mechanism; 1321, Transmission base; 1322, First transmission shaft; 1323, Second transmission shaft; 1324, Transmission gear; 1325, First pawl gear; 13251, First gear section; 13252, First pawl section; 1326, Second pawl gear; 13261, Second pawl section; 13262, Second gear section; 1327, First bevel gear; 1328, Second bevel gear; 1329, First ratchet; 13210, Second ratchet; 1330, Lunar connector; 1400. Rotation drive device; 1410. Rotation drive component; 1411. Rotation transmission rack; 1420. Rotation transmission assembly; 1421. Rotation transmission shaft; 1422. First rotation transmission gear; 1423. Second rotation transmission gear; 1430. Second planetary gear mechanism; 1431. Second sun gear; 1432. Second planetary gear; 1433. Second gear carrier; 1434. First planetary connector; 1435. Planetary bevel gear; 1440. Third planetary gear mechanism; 1441. Third sun gear; 1442. Third planetary gear; 1443. Third gear carrier; 1444. Second planetary connector; 1450. Earth rotation axis. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0017] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0018] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0019] This embodiment provides an astronomical demonstration device.

[0020] Please refer to Figure 1-10 The astronomical demonstration device includes a base 100, a solar demonstrator 200, a support 800, an Earth demonstrator 300, a lunar demonstrator 400, a canopy assembly 500, and a revolution drive device 600.

[0021] Please refer to Figure 1-10 A solar demonstrator 200 is mounted on a base 100, and a carrier 800 is movably mounted on the base 100. An Earth demonstrator 300 and a Moon demonstrator 400 are mounted on the carrier 800. A celestial canopy assembly 500 is mounted on the carrier 800 and is used to demonstrate a star map; the celestial canopy assembly 500 surrounds the Earth demonstrator 300 and the Moon demonstrator 400. A revolution drive device 600 is connected to the carrier 800 and is used to drive the carrier 800, the Earth demonstrator 300, the Moon demonstrator 400, and the celestial canopy assembly 500 to revolve around the solar demonstrator 200.

[0022] When using the astronomical demonstration equipment, the sun is demonstrated through the solar demonstrator 200, the earth through the earth demonstrator 300, and the moon through the moon demonstrator 400. A star map can also be displayed through the celestial canopy assembly 500. Compared to ordinary trispheres or celestial globes, it can demonstrate more astronomical phenomena. During the demonstration, the orbital drive device 600 can drive the carrier 800, earth demonstrator 300, moon demonstrator 400, and celestial canopy assembly 500 to revolve around the solar demonstrator 200, thus demonstrating the astronomical phenomenon of the earth and moon revolving around the sun.

[0023] Please refer to Figure 1-5 In one embodiment, the first axis, the second axis, and the third axis are three mutually perpendicular axes in space. The revolution drive device 600 includes a revolution rotating component 610, a revolution transmission mechanism 620, and a revolution drive component 630. The revolution rotating component 610 is rotatably mounted on the base 100, and the revolution drive component 630 is mounted on the base 100. The revolution transmission mechanism 620 drives the revolution drive component 630 and the revolution rotating component 610, enabling the revolution drive component 630 to drive the revolution rotating component 610 to rotate around the second axis via the revolution transmission mechanism 620. The support seat 800 is connected to the revolution rotating component 610. When the revolution rotating component 610 rotates around the second axis, it drives the support seat 800, the Earth demonstration component 300, the Moon demonstration component 400, and the canopy assembly 500 to revolve around the Sun demonstration component 200.

[0024] When using the revolution drive device 600, the revolution drive mechanism, through the revolution transmission mechanism 620, drives the revolution rotating component 610 to rotate around the second axis, thereby causing the support 800, the Earth demonstration component 300, the Moon demonstration component 400, and the canopy assembly 500, all mounted on the revolution rotating component 610, to revolve around the Sun demonstration component 200. Specifically, the first axis can be considered as... Figure 1 The axis shown in L1, the second axis can be considered as Figure 1 The third axis, as shown in L2, can be considered as... Figure 1 The axis shown in L3.

[0025] Please refer to Figure 1-4 In one embodiment, the revolution transmission mechanism 620 includes a revolution gear 621 and a revolution rack 622. The revolution rack 622 is connected to a revolution rotating component 610, and the revolution gear 621 is connected to a revolution driving component 630. The revolution gear 621 meshes with the revolution rack 622, and the revolution driving component 630 drives the revolution gear 621 to rotate, thereby causing the revolution rack 622 and the revolution rotating component 610 to rotate around a second axis. The revolution driving component 630 is configured as a manual driving component or an electric driving component.

[0026] When using the revolution drive device 600, the revolution drive component 630 drives the revolution gear 621 to rotate, thereby causing the revolution rack 622 and the revolution rotating component 610 to rotate around the second axis. The revolution drive component 630 can be configured as a manual drive component or an electric drive component. For example, when the revolution drive component 630 is configured as a manual drive component, it can be a crank, a wheel, etc. When the revolution drive component 630 is configured as an electric drive component, it can be a motor.

[0027] Please refer to Figure 1-4 In one embodiment, the base 100 is further provided with a base transmission rack 110, which meshes with the gear on the outer side of the first gear carrier 743 of the first planetary gear mechanism. This allows the orbital rotating component 610 to rotate around the second axis on the base 100, thereby driving the first gear carrier 743 to rotate, which in turn drives the second support 800 to rotate, and consequently drives all other movable components, such as the Earth demonstration component 300, the Moon demonstration component 400, the celestial canopy assembly 500, and the ecliptic orbit component 1000, to move. The transmission process will be described in detail below. In other words, driving the overall demonstration movement of the astronomical demonstration equipment through a single power source simplifies the structure of the astronomical demonstration equipment and improves the linkage performance of its various components.

[0028] Please refer to Figure 1-3 In one embodiment, as described in 5-7, the astronomical demonstration apparatus further includes an opening / closing drive device 700. The dome assembly 500 includes a plurality of dome elements 510 arranged circumferentially along the Earth demonstration component 300. The dome elements 510 are rotatably connected to the support base 800 and are rotatable between a closed position and an open position, as well as rotating around the Earth demonstration component 300. When the dome element 510 is in the closed position, it surrounds the Earth demonstration component 300 circumferentially; when the dome element 510 is in the open position, it exposes the Earth demonstration component 300. The opening / closing drive device 700 drives the plurality of dome elements 510 to rotate around the Earth demonstration component 300 circumferentially, and drives the plurality of dome elements 510 to reciprocate sequentially between the closed and open positions circumferentially along the Earth demonstration component 300.

[0029] During the demonstration, the opening and closing drive device 700 can drive the celestial dome component 510 to move circumferentially along the Earth demonstration component 300, and drive multiple celestial dome components 510 to rotate back and forth between closed and open positions sequentially along the circumference of the Earth demonstration component 300. This allows for a more intuitive demonstration of the changing positional relationship between the star map and the Earth, and the movement of the celestial dome components 510 is more flexible and diverse, thereby improving the flexibility and diversity of the celestial dome component 500's shape changes.

[0030] Please refer to Figure 1-3 In one embodiment, as shown in 5-7, the support base 800 includes a first support platform 810 and a second support platform 820, the second support platform 820 being rotatably disposed on the first support platform 810, the earth demonstration component 300 being connected to the first support platform 810, and the canopy component 510 being rotatably connected to the second support platform 820. The opening and closing drive device 700 includes an opening and closing transmission component 710, a first opening and closing guide component 720, and a second opening and closing guide component 730, one end of the opening and closing transmission component 710 being connected to the second support platform 820, and the first opening and closing guide component 720 and the second opening and closing guide component 730 being disposed at intervals on the first support platform 810. The opening and closing transmission component 710 is used to drive the second support platform 820 to rotate. When the second support platform 820 rotates, it drives the canopy component 510 to rotate around the spherical demonstration component, and alternately passes through the first opening and closing guide component 720 and the second opening and closing guide component 730. When the canopy component 510 passes through the first opening and closing guide component 720, the first opening and closing guide component 720 guides the canopy component 510 to rotate towards the open position. When the canopy component 510 passes through the second opening and closing guide component 730, the second opening and closing guide component 730 guides the canopy component 510 to rotate towards the closed position.

[0031] During the demonstration using the astronomical demonstration device, the second support platform 820 is rotated via the opening and closing transmission component 710. The rotation of the second support platform 820 causes the canopy component 510 to rotate around the Earth demonstration component 300, thus causing multiple canopy components 510 to alternately pass through the first opening and closing guide component 720 and the second opening and closing guide component 730. When the canopy component 510 moves to contact the first opening and closing guide component 720, the first opening and closing guide component 720 guides the canopy component 510 to rotate from a closed position to an open position. When the canopy component 510 moves to contact the second opening and closing guide component 730, the second opening and closing guide component 730 guides the canopy component 510 to rotate from an open position to a closed position. This achieves the rotation of the canopy component 510 around the Earth demonstration component 300, and the canopy component 510 reciprocates between the closed and open positions along the circumference of the Earth demonstration component 300. Specifically, the first support platform 810 can be connected to the revolution rotating component 610.

[0032] Please refer to Figure 1-3In one embodiment, as described in 5-7, the dome component 510 includes a dome panel 511 and a connecting rod portion 512. One end of the connecting rod portion 512 is connected to the dome panel 511, and the other end is rotatably connected to the second support platform 820. The connecting rod portion 512 can drive the dome panel 511 to rotate in a first plane perpendicular to the second support platform 820, and the ends of multiple connecting rod portions 512 connected to the second support platform 820 are arranged in a circular pattern on the second support platform 820. When the dome component 510 passes the first opening and closing guide member 720, the first opening and closing guide member 720 contacts the connecting rod portion 512 to drive the dome panel 511 to move away from the Earth demonstration component 300 in the first plane to the open position. When the dome component 510 passes the second opening and closing guide member 730, the second opening and closing guide member 730 contacts the connecting rod portion 512 to drive the dome panel 511 to move closer to the Earth demonstration component 300 in the first plane to the closed position.

[0033] On one hand, when the dome component 510 moves to the closed position, it can surround the Earth demonstration component 300 through the dome panel 511, and the star map can be placed on the dome panel 511, thus facilitating the display of the positional and movement relationships between the star map and the Earth demonstration component 300. On the other hand, when the dome component 510 passes through the first opening and closing guide member 720, the first opening and closing guide member 720 contacts the connecting rod portion 512, thereby driving the dome panel 511 to move away from the Earth demonstration component 300 in the first plane to the open position. When the dome component 510 passes through the second opening and closing guide member 730, the second opening and closing guide member 730 contacts the connecting rod portion 512, thereby driving the dome panel 511 to move closer to the Earth demonstration component 300 in the first plane to the closed position. Furthermore, since the first plane is perpendicular to the support platform, the rotation of the canopy component 510 around the Earth demonstration component 300 driven by the support platform is less likely to interfere with the rotation of the canopy component 510 between the open and closed positions. This improves the flexibility and diversity of the canopy component 500's shape changes and helps ensure the reliability of the canopy component 500's movement.

[0034] Please refer to Figure 1-3 In one embodiment, as described in 5-7, the first opening / closing guide 720 includes an opening push block 721 having an opening push surface 722 that gradually moves away from the Earth demonstrator 300 along its circumference. The opening push surface 722 is used to drive the connecting rod portion 512 away from the Earth demonstrator 300 when it contacts the connecting rod portion 512.

[0035] When the skylight component 510 passes the first opening / closing guide component 720, the opening pushing surface 722 of the opening pushing block 721 contacts the connecting rod portion 512. Since the opening pushing surface 722 gradually moves away from the Earth demonstration component 300 along its circumference, the connecting rod portion 512, moving along the opening pushing surface 722, can rotate from the closed position to the open position under the force of the opening pushing surface 722. Specifically, the first plane can be configured as a vertical plane, so that after the connecting rod portion 512 rotates a certain angle towards the open position under the force of the opening pushing surface 722, it can continue to rotate to the open position under the weight of the skylight component 510 itself.

[0036] Please refer to Figure 1-3 In one embodiment, as described in 5-7, the second opening / closing guide 730 includes a closing push block 731. The closing push block 731 has a first closing push surface 732 and a second closing push surface 733, both of which are configured as inclined surfaces in the direction of gravity. The first closing push surface 732 is disposed at the bottom of the second closing push surface 733, and the second closing push surface 733 extends close to the Earth demonstration component 300. The connecting rod portion 512 is configured to contact the first closing push surface 732 and the second closing push surface 733 in sequence. The first closing push surface 732 is used to drive the canopy component 510 to rotate from the open position to the closed position by a first preset angle, and the second closing push surface 733 is used to drive the canopy component 510 to continue rotating to the closed position.

[0037] When the skylight component 510 passes the second opening / closing guide 730, the first closing pushing surface 732 of the closing pushing block 731 first contacts the connecting rod portion 512, causing the skylight component 510 to rotate from the open position to the closed position by a first preset angle. Then, the second closing pushing surface 733 begins to contact the connecting rod portion 512, continuing to drive the skylight component 510 to the closed position. By dividing the closing movement of the skylight component 510 into two segments, the driving stroke of the pushing surface corresponding to each segment of movement can be shortened. In particular, the first preset angle can be designed to be relatively small, for example, 10°, 20°, or 30°, so that the first closing pushing surface 732 is only used to tilt the connecting rod portion 512 up by a certain angle, and then the second closing pushing surface 733 drives the skylight component 510 to the closed position. Furthermore, since the first closed push surface 732 is configured to extend closer to the Earth demonstration component 300 relative to the second closed push surface 733, the first closed push surface 732 can push the connecting rod portion 512 to move from the inside of the Earth demonstration component 300, which is more conducive to pushing the connecting rod portion 512 to tilt at a certain angle with less effort.

[0038] Please refer to Figure 1-3In one embodiment, as described in 5-7, the canopy assembly 500 further includes a first latching member 520 and a second latching member 530. The first latching member 520 is disposed on the connecting rod portion 512, and the second latching member 530 is disposed on the second support platform 820. When the canopy assembly 510 is in the closed position, the first latching member 520 and the second latching member 530 are detachably latched together. When the canopy assembly 510 is in the open position, the first latching member 520 and the second latching member 530 are disengaged.

[0039] When the skylight component 510 rotates to the closed position, the first latch 520 and the second latch 530 are detachably engaged. The engaging force between the first latch 520 and the second latch 530 allows the skylight component 510 to remain more stably in the closed position for display. During the rotation of the skylight component 510 towards the open position, the engaging force between the first latch 520 and the second latch 530 must be overcome to separate them before the skylight component 510 can continue to rotate towards the open position. Specifically, one of the first latch 520 and the second latch 530 can be configured as a slot, and the other can be configured as a latch block.

[0040] Please refer to Figure 1-3 In one embodiment, as described in 5-7, the dome assembly 500 further includes a dome member 540 disposed above the earth demonstration member 300. When the dome assembly 510 is in the closed position, the end of the dome panel 511 away from the link portion 512 engages with the dome member 540. When the dome assembly 510 is in the open position, the end of the dome panel 511 away from the link portion 512 separates from the dome member 540.

[0041] On the one hand, when the dome component 510 is in the closed position, the end of the dome panel 511 away from the connecting rod 512 engages with the dome component 540, allowing the dome component 510 to be placed on top of the dome component 510, thereby improving the overall integrity and completeness of the dome assembly 500. On the other hand, a star map can also be set on the dome component 540, thus using the dome component 540 to display the positional relationship between the star map and the Earth demonstration component 300. It should be noted that the star map can be set on the dome component 540 and the dome panel 511 by pasting, injection molding, drawing, or other suitable methods. Specifically, the end of the dome panel 511 furthest from the connecting rod 512 is provided with a first mating part, and the dome component 540 has a second mating part corresponding to the first mating part. When the end of the dome panel 511 furthest from the connecting rod 512 is engaged with the dome component 540, the first mating part and the second mating part are detachably engaged, so that when the dome component 510 rotates around the Earth demonstration component 300, it can drive the dome component 540 to rotate. Specifically, the first mating part and the second mating part can be a snap-fit ​​structure, a magnetic structure, or other suitable detachable connection structure.

[0042] Please refer to Figure 1-3 In one embodiment, as described in 5-7, the opening / closing drive device 700 further includes a first planetary gear mechanism 740. The first planetary gear 742 mechanism includes a first sun gear 741, a plurality of first planetary gears 742, and a first gear carrier 743. The first sun gear 741 is rotatably disposed in the middle of the first planetary gear carrier 742. The plurality of first planetary gears 742 are arranged between the first sun gear 741 and the first planetary gear carrier 742, and the first planetary gears 742 mesh with both the first sun gear 741 and the first planetary gear carrier 742. The first gear carrier 743 is used to drive the first planetary gears 742 to rotate on their own axis and revolve around the first sun gear 741 during rotation. An opening / closing transmission member 710 is provided in a one-to-one correspondence with each of the first planetary gears 742. One end of the opening / closing transmission member 710 is connected to its corresponding first planetary gear 742, and the other end is connected to the second support platform 820.

[0043] When the opening / closing drive device 700 is working, the rotation of the first gear carrier 743 drives the first planetary gear 742 to rotate on its own axis and revolve around the first sun gear 741. This, in turn, drives multiple opening / closing transmission components 710 to rotate, which in turn drives the second support platform 820 to rotate. Specifically, the first gear carrier 743, the first planetary gear 742, the opening / closing transmission components 710, and the second support platform 820 can all be configured to rotate around a second axis. The first gear carrier 743 can be configured to be driven by a manual or electric power source.

[0044] Please refer to Figure 1-3 In one embodiment, as described in 7-10, the astronomical demonstration device further includes an equatorial orbit component 900, an ecliptic orbit component 1000, and an orbital drive device 1100. The equatorial orbit component 900 is disposed on a support 800 and surrounds the Earth demonstration component 300, serving to demonstrate the equator. The ecliptic orbit component 1000 is rotatably connected to the support 800 and is capable of rotating between a first angular position and a second angular position. When the ecliptic orbit component 1000 rotates to the first angular position, it forms a first preset angle with the equatorial orbit component 900. When the ecliptic orbit component 1000 moves to the second angular position, it forms a second preset angle with the equatorial orbit component 900. The orbital drive device 1100 is used to drive the ecliptic orbit component 1000 to reciprocate between the first and second angular positions.

[0045] During the demonstration, the ecliptic orbit component 1000 can be driven by the orbit drive device 1100 to rotate back and forth between the first and second angle positions, thereby demonstrating the law that the angle between the equator and the ecliptic changes with astronomical time in astronomical phenomena.

[0046] Please refer to Figure 1-3 In one embodiment, as described in 7-10, the support 800 includes a base 830 and a support bracket 840. The Earth demonstration component 300 is rotatably disposed on the base 830, and the support bracket 840 is connected to and extends around the base 830. The equatorial orbit component 900 is fixedly connected to the support bracket 840, and the ecliptic orbit component 1000 is rotatably connected to the support bracket 840.

[0047] On one hand, the support frame 840 is supported by the base 830, and the support frame 840 carries the equatorial orbit component 900 and the ecliptic orbit component 1000. On the other hand, during the demonstration, the ecliptic orbit component 1000 can be driven to rotate on the support frame 840 by the orbit drive device 1100, thereby realizing the reciprocating rotation of the ecliptic orbit component 1000 between the first and second preset angle positions. Specifically, the first and second preset angles can be the same as or close to the maximum and minimum angles between the equator and the ecliptic in astronomical phenomena. For example, the first preset angle can be positive 24°, and the second preset angle can be negative 24°.

[0048] Please refer to Figure 1-3 In one embodiment, as described in 7-10, the support bracket 840 is arranged around a first axis, and the equatorial track component 900 is arranged around a second axis. The ecliptic track component 1000 is disposed within the space enclosed by the support bracket 840 and the equatorial track, and the ecliptic track component 1000 rotates around a third axis. The first axis, the second axis, and the third axis are three mutually perpendicular axes within the space.

[0049] On one hand, the support bracket 840 is arranged around a first axis, and the equatorial orbital component 900 is arranged around a second axis, so that the support bracket 840 and the equatorial orbital component 900 form a space that can accommodate the ecliptic orbital component 1000. On the other hand, the ecliptic orbital component 1000 is arranged within the space enclosed by the support bracket 840 and the equatorial orbital component, and the ecliptic orbital component 1000 can rotate around a third axis, so that the ecliptic orbital component 1000 can rotate within the space enclosed by the support bracket 840 and the equatorial orbital component without interfering with the support bracket 840 or the equatorial orbital component 900.

[0050] Please refer to Figure 1-3In one embodiment, as described in 7-10, the track drive device 1100 includes a track drive member 1110, a track transmission member 1120, a track roller 1130, and a track gear 1140. The track drive member 1110 is used to rotate around a second axis under the action of an external force. The track drive member 1110 has a drive groove 1111 arranged around the second axis, and the drive has continuous undulations in the direction along the second axis. The track transmission member 1120 is movably mounted on the support bracket 840. One end of the track transmission member 1120 is connected to the track roller 1130, and the other end has a track transmission rack 1121. The track roller 1130 is movably mounted in the drive groove 1111. The track gear 1140 is connected to the ecliptic track member 1000 and meshes with the track transmission rack 1121. When the track drive member 1110 rotates around the second axis, it drives the track roller 1130 to move within the drive groove 1111, thereby driving the ecliptic track member 1000 to rotate around a third axis.

[0051] When the ecliptic track component 1000 needs to be rotated during the demonstration, the track drive component 1110 rotates around the second axis under the action of external force, thereby driving the drive groove 1111 to rotate around the second axis. The drive groove 1111 drives the ecliptic track component 1000 to move through the track roller 1130, and the ecliptic track component 1000 drives the track gear 1140 to rotate through the track transmission rack 1121, thereby driving the ecliptic track component 1000 to rotate around the third axis through the track gear 1140. It can be understood that as the track roller 1130 repeatedly rotates within the regularly undulating drive groove 1111, it can drive the ecliptic track component 1000 to reciprocate between the first and second included angle positions around the third axis.

[0052] Please refer to Figure 1-3 In one embodiment, as described in 7-10, the astronomical demonstration device further includes a terminator demonstration component 1200, which is connected to the ecliptic orbit component 1000 and is perpendicular to the terminator demonstration component 1200.

[0053] The terminator demonstration component 1200 demonstrates the position of the terminator on Earth. Since the terminator demonstration component 1200 is vertically connected to the ecliptic orbit component 1000, when the ecliptic orbit component 1000 rotates back and forth between the first and second angle positions, the terminator demonstration component 1200 will also rotate with the ecliptic orbit component 1000, thus more closely approximating the positional and motion relationships between the terminator and the ecliptic orbit in astronomical laws.

[0054] Please refer to Figure 1-3In one embodiment, as described in 7-10, the astronomical demonstration device further includes a lunar demonstrator 400 and a lunar drive device 1300. The lunar drive device 1300 includes a lunar drive rack 1310, a one-way transmission mechanism 1320, and a lunar connector 1330. The one-way transmission mechanism 1320 is connected to the terminator demonstrator 1200. One end of the lunar connector 1330 is connected to the lunar demonstrator 400, and the other end is rotatably connected to the one-way transmission mechanism 1320. The lunar drive rack 1310 is connected to the support bracket 840. The one-way transmission mechanism 1320 is drively connected to the lunar drive rack 1310 so that when the ecliptic orbit component 1000 reciprocates around the third axis, the one-way transmission mechanism 1320 and the lunar connector 1330 drive the lunar demonstrator 400 to rotate around the Earth demonstrator 300 in a single preset direction.

[0055] On the one hand, the Moon Demonstration Component 400 demonstrates the Moon, and the Moon Drive Device 1300 drives the Moon Demonstration Component 400 to rotate around the Earth Demonstration Component 300, thus demonstrating the astronomical phenomenon of the Moon revolving around the Earth. On the other hand, because the Moon Drive Device 1300 includes a one-way transmission mechanism 1320, when the ecliptic orbit component 1000 reciprocates around the third axis, it does not cause the Moon Demonstration Component 400 to reciprocate around the Earth Demonstration Component 300. Instead, the one-way transmission mechanism 1320 drives the Moon Demonstration Component 400 to rotate around the Earth Demonstration Component 300 in a single preset direction. This makes the rotation of the Moon Demonstration Component 400 more consistent with astronomical laws, thereby improving the accuracy and effect of the demonstration. It can be understood that the "single preset direction" of the rotation of the Moon Demonstration Component 400 around the Earth Demonstration Component 300 can be configured to be the same as the direction of the Moon's revolution around the Earth in astronomical laws.

[0056] Please refer to Figure 1-3In one embodiment, as described in 7-10, the one-way transmission mechanism 1320 includes a transmission base 1321, a first transmission shaft 1322, a second transmission shaft 1323, a transmission gear 1324, a first ratchet gear 1325, a second ratchet gear 1326, a first bevel gear 1327, a second bevel gear 1328, a first ratchet 1329, and a second ratchet 13210. The first transmission shaft 1322 and the second transmission shaft 1323 are rotatably mounted on the transmission base 1321 and are parallel to each other. The transmission gear 1324 is fixedly connected to the first transmission shaft 1322, and the first ratchet 1329 and the second ratchet 13210 are fixedly mounted on the second transmission shaft 1323. The first ratchet gear 1325 includes a first gear portion 13251 and a first ratchet portion 13252, with the first ratchet portion 13252 rotatably connected to the first gear portion 13251. The second ratchet gear 1326 includes a second ratchet portion 13261 and a second gear portion 13262, with the second ratchet portion 13261 rotatably connected to the second gear portion 13262. Both the first gear portion 13251 and the second gear portion 13262 are rotatably mounted on the second transmission shaft 1323. The first ratchet 1329 and the second ratchet 13210 are both fixedly connected to the second transmission shaft 1323.

[0057] The lunar drive rack 1310 includes a first lunar drive rack 1310 and a second lunar drive rack 1310. The first lunar drive rack 1310 meshes with a transmission gear 1324, and the second lunar drive rack 1310 meshes with a second gear section 13262. The transmission gear 1324 meshes with both the first gear section 13251 and the second gear 13262. A first bevel gear 1327 is fixedly mounted on a first transmission shaft 1322, and a second bevel gear 1328 is rotatably mounted on a transmission seat 1321 and fixedly connected to a lunar connector 1330. The first bevel gear 1327 meshes with the second bevel gear 1328.

[0058] When the ecliptic orbital component 1000 rotates around the third axis in the first direction, the first pawl 13252 locks with the first ratchet 1329, and the second pawl 13261 unlocks with the second ratchet 13210. This allows the lunar demonstrator 400 to rotate in a single preset direction via the transmission gear 1324, the first pawl gear 1325, and the first ratchet 1329. When the ecliptic orbital component 1000 rotates around the third axis in the second direction, the second pawl 13261 locks with the second ratchet 13210, and the first pawl 13252 unlocks with the first ratchet 1329. This allows the lunar demonstrator 400 to rotate in a single preset direction via the second pawl gear 1326 and the second ratchet 13210.

[0059] During the reciprocating rotation of the ecliptic orbit component 1000 around the third axis, when the ecliptic orbit component 1000 rotates around the third axis in the first direction, the first pawl portion 13252 locks with the first ratchet 1329, and the second pawl portion 13261 unlocks with the second ratchet 13210. This allows the lunar demonstration component 400 to rotate in a single preset direction via the transmission gear 1324, the first pawl gear 1325, and the first ratchet 1329, while the second pawl gear 1326 rotates freely. When the ecliptic orbit component 1000 rotates around the third axis in the second direction, the second pawl portion 13261 locks with the second ratchet 13210, and the first pawl portion 13252 unlocks with the first ratchet 1329. This allows the lunar demonstration component 400 to rotate in a single preset direction via the second pawl gear 1326 and the second ratchet 13210, while the first pawl gear 1325 rotates freely. This ensures that regardless of the direction in which the ecliptic orbit component 1000 rotates around the third axis, it will only cause the lunar demo component 400 to rotate in a single preset direction. This can be understood as the first and second directions being two opposite directions around the third axis. For example, if the first direction is configured as clockwise, the second direction is counter-clockwise; conversely, if the first direction is configured as counter-clockwise, the second direction is clockwise.

[0060] Please refer to Figure 1-3 In one embodiment, as described in 7-10, the astronomical demonstration apparatus further includes a rotation drive device 1400 for driving the Earth demonstration component 300 to rotate. The rotation drive device 1400 includes a rotation drive component 1410, a rotation transmission assembly 1420, a second planetary gear mechanism 1430, a third planetary gear mechanism 1440, and an Earth rotation axis 1450. The rotation drive component 1410 is used to rotate around a second axis under the action of an external force, and the rotation transmission component is provided with a ring-shaped rotation transmission rack 1411. The rotation transmission assembly 1420, the second planetary gear mechanism 1430, the third planetary gear mechanism 1440, and the Earth rotation axis 1450 are connected to the first support platform 810. The rotation transmission assembly 1420 includes a rotation transmission shaft 1421, a first rotation transmission gear 1422, and a second rotation transmission gear 1423. One end of the rotation transmission shaft 1421 is provided with the first rotation transmission gear 1422, and the other end is provided with the second rotation transmission gear 1423. The first rotation transmission gear 1422 meshes with a rotation transmission rack 1411, and the second rotation transmission gear 1423 is connected to a second planetary gear mechanism 1430. A third planetary gear mechanism 1440 is stacked on top of the second planetary gear mechanism 1430. One end of the Earth's rotation shaft is connected to the third planetary gear mechanism 1440, and the other end is connected to the Earth demonstration component 300. The rotation drive component 1410 and the orbit drive component 1110 are configured as the same component.

[0061] When using the astronomical demonstration device, the Earth demonstration component 300 is driven to rotate by the rotation drive device 1400, thus facilitating the demonstration of the positional and motional relationships between the rotating Earth and the star chart under changes in astronomical time. When the rotation drive device 1400 is operating, the rotation of the second support platform 820 drives the rotation drive component 1410 to rotate, which in turn drives the rotation transmission rack 1411 to rotate. The rotation transmission rack 1411 drives the first rotation transmission gear 1422 to rotate, which in turn drives the rotation transmission shaft 1421 and the second rotation transmission gear 1423 to rotate. The second rotation transmission gear 1423 then drives the second planetary gear mechanism 1430 and the third planetary gear mechanism 1440 to rotate, ultimately driving the Earth demonstration component 300 to rotate via the third planetary gear mechanism 1440.

[0062] By using the stacked second planetary gear mechanism 1430 and third planetary gear mechanism 1440, the transmission ratio between the rotation angle of the second support platform 820 and the rotation angle of the Earth demonstration component 300 can be adjusted, as can the rotation direction of the Earth demonstration component, making the speed ratio and rotation direction of each component in the astronomical demonstration device more consistent with astronomical laws. Furthermore, configuring the rotation drive component 1410 and the orbit drive component 1110 as a single component—that is, the rotation transmission rack 1411 and the drive groove 1111—simplifies the structure of the astronomical demonstration device and improves the interoperability between its components.

[0063] Please refer to Figure 1-3 Specifically, referring to the first planetary gear mechanism 740 described above, the second planetary gear mechanism 1430 can be configured to include a second sun gear 1431, a plurality of second planetary gears 1432, a second gear carrier 1433, a first planetary connector 1434, and a planetary bevel gear 1435. The third planetary gear mechanism 1440 can be configured to include a third sun gear 1441, a plurality of third planetary gears 1442, a third gear carrier 1443, and a second planetary connector 1444. The second sun gear 1431 is rotatably disposed in the middle of the second planetary gear carrier 1432, and the plurality of second planetary gears 1432 are arranged between the second sun gear 1431 and the second planetary gear carrier 1432, and the second planetary gears 1432 mesh with both the second sun gear 1431 and the second planetary gear carrier 1432. The third sun gear 1441 is rotatably disposed in the middle of the third planetary gear 1442 carrier. Multiple third planetary gears 1442 are arranged between the third sun gear 1441 and the third planetary gear 1442 carrier, and the third planetary gears 1442 mesh with both the third sun gear 1441 and the third planetary gear 1442 carrier.

[0064] The first planetary connector 1434 connects the second gear carrier 1433 to the planetary bevel gear 1435, which meshes with the second rotation transmission gear 1423. The second planetary connector 1444 connects the third gear carrier 1443 to the second sun gear 1431. The Earth demonstration component 300 is connected to the third sun gear 1441 via the Earth rotation axis 1450. During the rotation of the Earth demonstration component 300, the driving force is transmitted to the Earth demonstration component 300 sequentially through the second planetary gear mechanism 1430 and the third planetary gear mechanism 1440. Specifically, the driving force is first transmitted to the planetary bevel gear 1435 to drive its rotation. The planetary bevel gear 1435 then drives the second gear carrier 1433 to rotate via the first planetary connector 1434, thereby driving the rotation of multiple second planetary gears 1432 and the second sun gear 1431. The second sun gear 1431 drives the third gear carrier 1443 to rotate via the second planetary connector 1444, which in turn drives multiple third planetary gears 1442 and the third sun gear 1441 to rotate. This, in turn, drives the Earth axis 1450 to rotate via the third sun gear 1441, ultimately causing the Earth demonstration component 300 to rotate. Specifically, the Earth demonstration component 300, the Earth axis 1450, the third sun gear 1441, the second sun gear 1431, and the planetary bevel gear 1435 can be configured to rotate around a second axis.

[0065] Please refer to Figure 1-3 For reference, see 7-10. Figure 1 In one embodiment, the ecliptic orbit component 1000 is provided with a first through hole 1010 for demonstrating the point of direct sunlight, and the equatorial orbit component 900 is provided with a second through hole 910 corresponding to the first through hole 1010. When the angle between the ecliptic orbit component 1000 and the equatorial orbit component 900 is 0°, the first through hole 1010 is aligned with the second through hole 910.

[0066] On one hand, the position of the sun's direct rays on the Earth can be demonstrated by the corresponding position of the first through-hole 1010 on the Earth demonstration piece 300. On the other hand, when the first through-hole 1010 is aligned with the second through-hole 910, it can be used to demonstrate the astronomical phenomenon that the angle between the ecliptic and the equator is 0°.

[0067] It should be noted that, for the purpose of demonstrating astronomical laws, in this embodiment, the rotation direction of the Earth demonstration component 300 is counterclockwise when viewed from above its North Pole (top of the Earth demonstration component 300) and clockwise when viewed from above its South Pole (bottom of the Earth demonstration component 300). The star chart can be configured as a traditional star chart, that is, a chart of the Three Enclosures, Four Symbols, and Twenty-Eight Mansions, or it can be configured as a modern astronomical star chart.

[0068] In this embodiment, the transmission ratios of each component can be designed as follows: When the revolution drive 630 is configured as a manual crank, the crank rotates 72 revolutions, driving the revolution transmission component to rotate one revolution, thus demonstrating that there are 72 periods in a year. One revolution of the revolution transmission component causes the first planetary gear 742 to rotate one revolution, and the first sun gear 741 to rotate 4 revolutions. One revolution of the rotation drive 1410 and the track drive 1110 drives the first rotation transmission gear 1422, the second rotation transmission gear 1423, and the planetary bevel gear 1435 to rotate 12 revolutions. One revolution of the planetary bevel gear 1435 drives the second gear carrier 1433 to rotate one revolution, thereby driving the second sun gear 1431 to rotate 6 revolutions. One revolution of the second sun gear 1431 drives the third gear carrier 1443 to rotate one revolution, thereby driving the third sun gear 1441 to rotate 5 revolutions. Ultimately, the rotation drive component 1410 and the orbit drive component 1110 rotate clockwise once, driving the Earth demonstration component 300 to rotate counterclockwise 360 ​​times, that is, 360 days. Of course, in other embodiments, the transmission ratio of some transmission nodes can be increased and the transmission ratio of others can be decreased. The rotation direction of each transmission component can also be adaptively changed, as long as the rotation direction and speed ratio of each demonstration component are as close as possible to the actual astronomical laws.

[0069] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art to which this invention pertains can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. An astronomical demonstration device, characterized in that, include: Base; A solar demonstration component, wherein the solar demonstration component is disposed on the base; The support seat is movably disposed on the base; An Earth demonstration component, wherein the Earth demonstration component is disposed on the support base; A lunar demonstrator, which is mounted on the support. A celestial canopy assembly, mounted on the support base, is used to demonstrate a star map; the celestial canopy assembly is used to surround the Earth demonstrator and the Moon demonstrator. And a revolution drive device, which is connected to the carrier and is used to drive the carrier, the Earth demonstration piece, the Moon demonstration piece and the celestial canopy assembly to revolve around the Sun demonstration piece.

2. The astronomical demonstration device as described in claim 1, characterized in that, The first axis, the second axis, and the third axis are three mutually perpendicular axes in space; the revolution drive device includes a revolution rotating component, a revolution transmission mechanism, and a revolution drive component; the revolution rotating component is rotatably mounted on the base, the revolution drive component is mounted on the base, and the revolution transmission mechanism drives the revolution drive component and the revolution rotating component, so that the revolution drive component can drive the revolution rotating component to rotate around the second axis through the revolution transmission mechanism; the support seat is connected to the revolution rotating component, and when the revolution rotating component rotates around the second axis, it drives the support seat, the Earth demonstration component, the Moon demonstration component, and the sky curtain assembly to revolve around the Sun demonstration component.

3. The astronomical demonstration device as described in claim 2, characterized in that, The revolution transmission mechanism includes a revolution gear and a revolution rack. The revolution rack is connected to the revolution rotating component, and the revolution gear is connected to the revolution driving component. The revolution gear meshes with the revolution rack, and the revolution driving component is used to drive the revolution gear to rotate, so as to drive the revolution rack and the revolution rotating component to rotate around the second axis. The revolution driving component is configured as a manual driving component or an electric driving component.

4. The astronomical demonstration device as described in claim 1, characterized in that, It also includes an opening and closing drive device. The dome assembly includes a plurality of dome components arranged circumferentially along the Earth demonstration piece. The dome components are rotatably connected to the support base. The dome components are rotatable between a closed position and an open position, as well as around the Earth demonstration piece. When the canopy component is in the closed position, it is used to surround the Earth demonstration component along the circumference of the Earth demonstration component; when the canopy component is in the open position, it is used to expose the Earth demonstration component. The opening and closing drive device is used to drive multiple canopy components to rotate around the Earth demonstration component along the circumference of the Earth demonstration component, and to drive multiple canopy components to reciprocate between the closed position and the open position in sequence along the circumference of the Earth demonstration component.

5. The astronomical demonstration device as described in claim 4, characterized in that, The support includes a first support platform and a second support platform, the second support platform being rotatably mounted on the first support platform, the earth demonstration component being connected to the first support platform, and the sky screen component being rotatably connected to the second support platform; The opening and closing drive device includes an opening and closing transmission component, a first opening and closing guide component, and a second opening and closing guide component. One end of the opening and closing transmission component is connected to the second support platform, and the first opening and closing guide component and the second opening and closing guide component are spaced apart on the first support platform. The opening and closing transmission component is used to drive the second support platform to rotate. When the second support platform rotates, it drives the canopy component to rotate around the spherical demonstration component and alternately pass through the first opening and closing guide component and the second opening and closing guide component. When the canopy component passes through the first opening and closing guide component, the first opening and closing guide component guides the canopy component to rotate towards the open position. When the canopy component passes through the second opening and closing guide component, the second opening and closing guide component guides the canopy component to rotate towards the closed position.

6. The astronomical demonstration device as described in claim 5, characterized in that, The canopy component includes a canopy panel and a connecting rod. One end of the connecting rod is connected to the canopy panel, and the other end is rotatably connected to the second support platform. The connecting rod can drive the canopy panel to rotate in a first plane perpendicular to the second support platform, and the ends of multiple connecting rods connected to the second support platform are arranged in a circle on the second support platform. When the canopy component passes the first opening and closing guide, the first opening and closing guide contacts the connecting rod portion to drive the canopy panel to move away from the Earth demonstration component in the first plane to the open position; when the canopy component passes the second opening and closing guide, the second opening and closing guide contacts the connecting rod portion to drive the canopy panel to move closer to the Earth demonstration component in the first plane to the closed position.

7. The astronomical demonstration device as described in claim 6, characterized in that, The first opening and closing guide includes an opening push block, the opening push block having an opening push surface, the opening push surface gradually moving away from the Earth demonstration piece along the circumference of the Earth demonstration piece; The opening and pushing surface is used to drive the connecting rod to rotate away from the Earth demonstration piece when it contacts the connecting rod part; The second opening and closing guide includes a closing push block, which has a first closing push surface and a second closing push surface. Both the first closing push surface and the second closing push surface are configured as inclined surfaces in the direction of gravity. The first closing push surface is disposed at the bottom of the second closing push surface, and the second closing push surface extends close to the Earth demonstration piece. The connecting rod is configured to contact the first closing pushing surface and the second closing pushing surface in sequence. The first closing pushing surface is used to drive the canopy component to rotate from the open position to the closed position by a first preset angle, and the second closing pushing surface is used to drive the canopy component to continue rotating to the closed position.

8. The astronomical demonstration device as described in claim 1, characterized in that, It also includes an equatorial orbit component, an ecliptic orbit component, and an orbital drive device. The equatorial orbit component is mounted on the support base and surrounds the Earth demonstration component to demonstrate the equator. The ecliptic orbit component is rotatably connected to the support base and can rotate between a first included angle position and a second included angle position. When the ecliptic orbit component rotates to the first included angle position, it forms a first preset angle with the equatorial orbit component. When the ecliptic orbit component moves to the second included angle position, it forms a second preset angle with the equatorial orbit component. The orbital drive device is used to drive the ecliptic orbit component to reciprocate between the first included angle position and the second included angle position.

9. The astronomical demonstration device as described in claim 8, characterized in that, The support base includes a base body and a support bracket. The Earth demonstration piece is rotatably mounted on the base body, and the support bracket is connected to the base body and extends around the base body. The equatorial track component is fixedly connected to the support bracket, and the ecliptic track component is rotatably connected to the support bracket; The supporting bracket is arranged around a first axis, and the equatorial orbit component is arranged around a second axis; the ecliptic orbit component is arranged within the space enclosed by the supporting bracket and the equatorial orbit, and the ecliptic orbit component rotates around a third axis, wherein the first axis, the second axis, and the third axis are three mutually perpendicular axes in space; The track drive device includes a track drive component, a track transmission component, track rollers, and track gears. The track drive component is used to rotate around the second axis under the action of an external force. The track drive component has a drive groove arranged around the second axis, and the drive has continuous undulation changes in the direction along the second axis. The track transmission component is movably mounted on the support bracket. One end of the track transmission component is connected to the track roller, and the other end has a track transmission rack. The track roller is movably mounted in the drive groove. The track gear is connected to the ecliptic track component and meshes with the track transmission rack. When the track drive component rotates around the second axis, it drives the track roller to move within the drive groove, thereby driving the ecliptic track component to rotate around the third axis.

10. The astronomical demonstration device as described in claim 9, characterized in that, It also includes a rotation drive device. The support includes a first support platform and a second support platform. The second support platform is rotatably disposed on the first support platform. The rotation drive device is used to drive the Earth demonstration piece to rotate. The rotation drive device includes a rotation drive component, a rotation transmission assembly, a second planetary gear mechanism, a third planetary gear mechanism, and an Earth rotation axis. The rotation drive component is used to rotate around the second axis under the action of an external force. The rotation transmission assembly is provided with a ring-shaped rotation transmission rack. The rotation transmission assembly, the second planetary gear mechanism, the third planetary gear mechanism, and the Earth rotation axis are connected to the first support platform. The rotation transmission assembly includes a rotation transmission shaft, a first rotation transmission gear, and a second rotation transmission gear. One end of the rotation transmission shaft is provided with the first rotation transmission gear, and the other end is provided with the second rotation transmission gear. The first rotation transmission gear meshes with the rotation transmission rack, and the second rotation transmission gear is connected to the second planetary gear mechanism. The third planetary gear mechanism is stacked on top of the second planetary gear mechanism. One end of the Earth's rotation axis is connected to the third planetary gear mechanism for transmission, and the other end is connected to the Earth demonstration piece. The self-rotation drive and the track drive are configured as the same component.

Images