CN214098926U

CN214098926U - Earth-moon running demonstration mechanism

Info

Publication number: CN214098926U
Application number: CN201820376771.4U
Authority: CN
Inventors: 熊春锦
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-03-19
Filing date: 2018-03-19
Publication date: 2021-08-31
Anticipated expiration: 2028-03-19

Abstract

The utility model provides a ground moon operation demonstration mechanism belongs to astronomical knowledge science popularization technical field. The demonstration mechanism solves the problems that the existing earth-moon operation demonstration mechanism is complex in structure and not accurate and stable enough in movement. This earth-moon operation demonstration mechanism, the on-line screen storage device comprises a base, be equipped with the fixed plate on the base, fly leaf and main shaft, be equipped with motor and reduction gears on the fixed plate, reduction gears includes input and output one, output two, one side of fly leaf has linked firmly the support, be equipped with the earth axle on the support, the upper end of earth axle has linked firmly the earth, earth gear and moon gear have been linked firmly to the axial on the support, output two can drive earth gear and moon gear rotation, the epaxial moon support that is equipped with of earth, the upper end of moon support has linked firmly the moon, the lower extreme and the moon gear activity of moon support link to each other, moon gear can drive the motion of moon support and make the moon rotate around the earth level. The local lunar operation demonstration mechanism has the advantages of accurate operation and simple and compact structure.

Description

Earth-moon running demonstration mechanism

Technical Field

The utility model belongs to the technical field of astronomical knowledge science popularization, a demonstration mechanism, especially a earth and moon operation demonstration mechanism is related to.

Background

In the teaching activities of astronomical knowledge and geographical knowledge, a globe is often needed to be used so as to better improve the teaching effect, but the existing globe is basically a model in a fixed state in structure and function, and the globe in the functional state cannot demonstrate the reasons of earth rotation, revolution and four-season climate formation, so the using effect is reduced; in order to overcome the defects of the globe, currently, in some globe design schemes, the globe is designed to demonstrate the reasons of rotation, revolution and four-season climate formation.

For example, chinese patent document discloses a full-automatic intelligent three-globe (application No. 03219473.0), in which a sun lamp (simulated sun) is placed in a sun lampshade, the sun lampshade is fixed on a sun rotation gear, a sun rotation motor is mounted on a sun shaft, and a gear on a rotation shaft of the sun rotation motor is engaged with the sun rotation gear: the earth revolution motor is arranged on the tie bar, a driving wheel on a rotating shaft of the earth revolution motor is meshed with a sun wheel arranged on a sun shaft, and a sun lens with the central line in the same horizontal line with the central line of the sun lamp is arranged on the tie bar; the earth (simulated earth) is directly fixed on an earth automatic rotating motor which is arranged on an earth revolution shaft arranged in a synchronous shaft sleeve; the moon is arranged on a moon supporting rod which passes through a circumferential sleeve rod arranged on the earth revolution shaft, the lower end of the moon supporting rod is fixed on a moon revolution rotating arm provided with a luminous tube through a one-way hinge, the rotating arm is fixed on a moon revolution gear meshed with a driving gear on the moon revolution motor rotating shaft, and the moon revolution motor is arranged on an inclined shaft sleeve: the track motor arranged on the tie bar is meshed with a track gear arranged on a lunar track shaft sleeve through a driving gear of a rotating shaft of the track motor; a lunar phase plate which is coaxially fixed with a lunar orbit shaft sleeve (a revolution axis of the earth) on a tie rod is provided with a positioning bearing, and a synchronizing wheel arranged on the revolution axis of the earth is mutually connected with a synchronizing wheel arranged on a solar shaft through a synchronous belt. One end of the tie rod is sleeved on the solar shaft through a bearing, and the other end of the tie rod is sleeved on a synchronous shaft sleeve sleeved on the earth revolution shaft. However, the full-automatic intelligent globe is characterized in that the sun rotation motor, the earth rotation motor and the moon revolution motor respectively drive the sun rotation motion, the earth rotation motion and the earth revolution motion, so that the structure is complex and the motion is not accurate and stable enough.

Disclosure of Invention

The utility model aims at solving the problems in the prior art, and provides a moon-earth operation demonstration mechanism with accurate operation and simple and compact structure.

The purpose of the utility model can be realized by the following technical proposal: earth-moon operation demonstration mechanism, including the base, the base on be equipped with fixed plate, fly leaf and main shaft, base, fixed plate and main shaft link firmly mutually, the fixed plate with the main shaft link firmly mutually, the fixed plate on be equipped with motor and reduction gears, reduction gears include input and output one, the output two that link to each other with the pivot of motor, output one can drive the fly leaf rotate, its characterized in that, one side of fly leaf link firmly the support, the support on be equipped with the earth axle that the slope set up, the upper end of earth axle link firmly the earth, the support on the axial link firmly earth gear and lunar gear, output two can drive earth gear and lunar gear rotate, earth gear can drive the earth axle around the axis rotation of earth axle, the earth shaft pass the moon gear and the earth gear, the earth shaft on be equipped with moon support, moon support's upper end link firmly the moon, moon support's middle part have the sliding sleeve and the sliding sleeve cover establish the earth shaft on, moon support's lower extreme with moon gear activity link to each other, just moon gear can drive moon support motion make the moon wind the earth level rotate.

When the lunar orbit demonstration device works, the motor is connected with the input end of the speed reduction mechanism and drives the first output end and the second output end to rotate, the first output end drives the movable plate to rotate, the second output end drives the earth gear and the lunar gear to rotate through two groups of gear transmission respectively, the movable plate rotates and drives the earth to revolve, the earth gear drives the earth to rotate through the earth shaft, the lunar gear drives the lunar to rotate horizontally around the earth through the lunar support, and the local lunar orbit demonstration mechanism simultaneously drives the earth to rotate, the earth to revolve and the lunar to revolve through the motor.

In the above demonstration mechanism of terrestrial moon running, an angle formed by the terrestrial ball shaft and the main shaft is 18.28-28.58 °.

In the above-mentioned demonstration mechanism for lunar and terrestrial operations, the rotation speed of the movable plate is as follows: rotational speed of the moon gear: the rotation speed of the earth gear is 1:12.3: 365.2.

In the above earth-moon operation demonstration mechanism, the earth shaft is fixedly connected with a first ball head which is coaxially arranged, the middle part of the earth gear is provided with a spherical groove for embedding the first ball head, the first ball head is embedded in the spherical groove, and the first ball head and the earth gear are circumferentially and fixedly connected. The first ball head is circumferentially connected with the earth gear through the key or the pin, so that the rotation of the earth gear can drive the first ball head and the axis of the earth shaft wound around the earth shaft to rotate, and the device has the advantages of smooth transmission, reliable transmission and simple structure.

In the lunar orbit demonstration mechanism, the earth gear comprises an upper earth half gear and a lower earth half gear, the upper earth half gear is fixedly connected with the lower earth half gear, hemispherical grooves with corresponding structures and positions are formed in the inner end surfaces of the upper earth half gear and the lower earth half gear, and the two hemispherical grooves form the spherical grooves. The first ball head is fixedly connected with the earth shaft and embedded in the spherical grooves formed by the two hemispherical surface grooves, and the ball head positioning device has the advantages of good ball head positioning effect and convenience in assembly.

In the above earth-moon movement demonstration mechanism, the moon gear is located on the upper side of the earth gear, the driving plate is placed on the upper end face of the moon gear, the driving plate is fixedly connected with a horizontally arranged guide rod, a convex guide post is positioned on one end face of the moon gear, a through guide hole is formed in the guide post, the guide rod is matched with the guide hole and penetrates through the guide hole, a sliding groove is formed in the driving plate, and a sliding block is fixedly connected to the lower end of the moon support and embedded in the sliding groove. The rotation of moon gear drives the drive plate and rotates, drives the relative moon gear horizontal migration of drive plate along the direction of guide pillar and guiding hole simultaneously, because the slider of the lower extreme of moon support inlays in the spout, therefore the drive plate drives moon support horizontal rotation, makes the moon rotate around the earth level, has reliable, the simple structure of transmission and assembles comparatively convenient advantage.

In the above demonstration mechanism of the operation in the earth and moon, an angle formed by the groove bottom of the sliding chute and the horizontal plane is 23.5-28.6 °.

In the earth and moon running demonstration mechanism, a second ball head for the earth shaft to pass through is positioned in the middle of the driving plate and is connected with the earth shaft. The second ball head drives the driving plate to rotate and enables the driving plate to move horizontally relative to the moon gear, and the driving device has the advantages of being simple in structure, good in transmission effect and convenient to assemble.

In foretell moon operation demonstration mechanism, one side axial of fly leaf link firmly the roating seat just the roating seat with the fly leaf the rotational speed the same and turn to opposite, the lower extreme axial of earth's ball axle link firmly one side of the axis of roating seat, the centre of sphere of bulb one be located the axis of roating seat on. The up end of roating seat is the inclined plane of 23.5 degrees with the level formation, and the lower extreme of roating seat links firmly on the fly leaf through the bearing axial, through foretell roating seat, makes the rotation that the earth's axle of slope can be smooth and easy to make demonstration mechanism can move more true and more accurate advantage.

In the moon operation demonstration mechanism, the main shaft is fixedly connected with a first gear, the rotating seat is fixedly connected with a second gear, the movable plate is fixedly connected with odd transmission gears in the axial direction, the adjacent transmission gears are meshed in sequence, the transmission gears on two sides are respectively meshed with the first gear and the second gear, and the first gear and the second gear have the same tooth number. The first gear and the second gear are in transmission connection through the transmission gear, so that the rotating speed of the rotating seat and the rotating speed of the movable plate are the same, the rotating directions of the rotating seat and the movable plate are opposite, and the rotating device has the advantage of being simple and compact in structure.

In the moon operation demonstration mechanism, the first output end is a first output gear axially fixedly connected to the main shaft, the first output gear is vertically and fixedly connected with a connecting rod, the connecting rod is located on one side of the axis of the main shaft, and the lower end of the connecting rod is inserted into the movable plate. The first output gear drives the movable plate to rotate around the main shaft through the connecting rod, and the first output gear has the advantages of simple and compact structure and high transmission efficiency.

In foretell moon operation demonstration mechanism, output two for the axial output ring gear that links firmly on the fixed plate, the internal tooth portion of output ring gear pass through gear drive with the pivot transmission of motor link to each other, the external tooth portion of output ring gear drive respectively through two sets of gear train transmissions earth gear and moon gear rotate. The gear set transmission can be replaced by chain and chain wheel transmission and synchronous belt transmission.

In foretell moon operation demonstration mechanism, the opposite side axial of fly leaf link firmly roating seat two, roating seat two on link firmly the gear three the same with a gear tooth number, the opposite side axial of fly leaf link firmly odd number drive gear, adjacent drive gear meshes mutually in proper order, the drive gear that is located both ends meshes with the gear three-phase in gear one respectively, roating seat two be equipped with the skew axis that the slope set up, the skew axis all the time with earth axle parallel arrangement, the upper end of skew axis be equipped with the direct light that can send direct light, the direct light be the level setting just the centre of sphere setting of earth be located the light of direct light on. The transmission gears are meshed with the first gear and the third gear in sequence, so that the second rotating base and the rotating base are same in rotation direction and rotation speed, the inclined shaft and the earth shaft are always arranged in parallel, and the sphere center of the earth is positioned on the light ray of the direct-emitting lamp, so that the direct-emitting lamp always horizontally emits on the earth, the sunlight can be well simulated, and the direct-emitting lamp has the advantage of being visual and accurate in demonstration.

In foretell moon operation demonstration mechanism, the fly leaf on link firmly support two, the skew axis pass support two, the outside cover of skew axis be equipped with a location section of thick bamboo, the upper end of a location section of thick bamboo be equipped with and penetrate the lamp stand, the upper end of skew axis link firmly bulb three, bulb three inlay in penetrate the lamp stand on, support two go up the axial and link firmly down a location section of thick bamboo, the skew axis pass a lower location section of thick bamboo, the upper end of a lower location section of thick bamboo with the lower extreme of a location section of thick bamboo link firmly mutually. Because the lower end of the positioning cylinder is fixedly connected with the lower positioning cylinder, when the rotating base II drives the inclined shaft to rotate, the spotlight holder placed on the support II is always at the same height, and the bulb III is embedded on the spotlight holder, the spotlight holder cannot rotate relative to the support III, so that light of the straight spotlight is always emitted to the axis of the earth, and a plane bearing is arranged between the lower end of the positioning cylinder and the support II, so that the positioning cylinder can be positioned at the support II in a better axial direction and can smoothly rotate relative to the support II.

In the aforementioned demonstration mechanism for lunar operation, the upper end surface of the second rotary base is an inclined surface which is obliquely arranged, the angle formed by the inclined surface and the horizontal is 23.5 °, a connecting sleeve is positioned at the upper end of the second rotary base, the lower end of the oblique shaft is embedded in the connecting sleeve, a screw is connected to the connecting sleeve through a thread, and the second support is provided with a strip-shaped hole which penetrates through the bolt and penetrates through the strip-shaped hole. When the second rotating base rotates, the screw connected to the connecting sleeve through the screw thread penetrates through the strip-shaped hole in the second support, so that the connecting sleeve is fixedly connected to the second support in the circumferential direction, the connecting sleeve moves up and down relative to the second rotating base and drives the oblique shaft to swing around the axis of the second rotating base, and light rays of the direct-emitting lamp are made to always irradiate the axis of the earth.

In the above earth-moon movement demonstration mechanism, a bearing is arranged between the connecting sleeve and the second rotating seat.

In the above-mentioned earth-moon operation demonstration mechanism, the direct-emitting lamp is an LED laser lamp.

Compared with the prior art, the local lunar operation demonstration mechanism has the following advantages:

1. the output end I of the speed reducing mechanism drives the movable plate to rotate, the output end II of the speed reducing mechanism drives the earth gear to rotate and the moon gear to rotate respectively through the transmission of two groups of gears, the movable plate rotates to drive the earth to revolve, the earth gear drives the earth to rotate through an earth shaft, the moon gear drives the moon to horizontally rotate around the earth through a moon support, and the local moon operation demonstration mechanism simultaneously drives the earth to rotate, the earth to revolve and the revolution of the moon through a motor, so that the speed reducing mechanism has the advantages of accurate operation, simple structure and reliable transmission;

2. the first ball head is circumferentially connected with the earth gear through a key or a pin, so that the rotation of the earth gear can drive the first ball head and the axis of the earth shaft wound around the earth shaft to rotate, and the device has the advantages of smooth transmission, reliable transmission and simple structure;

3. the lower end of the rotating seat is axially and fixedly connected to the movable plate through a bearing, and the inclined earth shaft can smoothly rotate through the rotating seat, so that the demonstration mechanism can run more truly and accurately;

4. the first output gear drives the movable plate to rotate around the main shaft through the connecting rod, and the first output gear has the advantages of simple and compact structure and high transmission efficiency.

Drawings

Fig. 1 is a schematic configuration diagram of a local lunar operation demonstration facility.

Figure 2 is a partial top schematic view of a local lunar operation demonstration facility.

Fig. 3 is an enlarged schematic view a of fig. 1.

In the figure, 1, a base; 2. a fixing plate; 3. a movable plate; 4. a main shaft; 5. a motor; 6. a speed reduction mechanism; 6a, an output end I; 6a1, output gear one 20; 6a2, connecting rod; 6b, an output end II; 6b1, output ring gear; 7. a support; 8. a geodesic shaft; 9. the earth; 10. an earth gear; 10a, upper earth half gear; 10b, a lower ball half gear; 11. a lunar gear; 12. the moon; 12a, a sliding sleeve; 13. a first ball head; 14. a drive plate; 14a, a chute; 15. a guide bar; 16. a guide post; 16a, a guide hole; 17. a lunar support; 17a, a slide block; 18. a second ball head; 19. a rotating base; 20. a first gear; 21. a second gear; 22. a transmission gear; 23. a second rotating seat; 24. a third gear; 25. a skew axis; 26. a direct-emitting lamp; 27. a second bracket; 27a, a strip-shaped hole; 27b, a tapered hole; 28. a positioning cylinder; 29. a spot light holder; 30. a third ball head; 31. connecting sleeves; 32. a screw; 33. a bearing; 34. a lower positioning cylinder; 35. a flat bearing;

gears involved in the transmission: a gear A; a gear B; a gear B'; a gear C; a gear C'; a gear D; an inner tooth portion D'; an outer tooth portion E; a gear E'; gear E "; a gear E' ″; gear E, gear F'; gear F "; gear F' ".

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 3, the earth-moon movement demonstration mechanism comprises a base 1, wherein a fixed plate 2, a movable plate 3 and a main shaft 4 are arranged on the base 1, the base 1 and the fixed plate 2 are fixedly connected with the main shaft 4, a motor 5 and a speed reduction mechanism 6 are arranged on the fixed plate 2, and the speed reduction mechanism 6 comprises an input end connected with a rotating shaft of the motor 5, an output end I6 a and an output end II 6 b. The first output end 6a is an output gear 6a1 axially fixedly connected to the main shaft 4, the first output gear 6a1 is vertically fixedly connected to a connecting rod 6a2, the connecting rod 6a2 is located on one side of the axis of the main shaft 4, and the lower end of the connecting rod 6a2 is inserted into the movable plate 3.

Specifically, the speed reduction mechanism 6 includes a gear a, a gear B ', a gear C ', a gear D, an output gear one 6a1 and an output gear ring 6B1, the output gear ring 6B1 includes an inner tooth portion D ' and an outer tooth portion E, the motor 5 drives the gear a and the gear B to rotate, and the output end two 6B is an output gear ring 6B 1.

One side of fly leaf 3 has linked firmly support 7, is equipped with the earth axle 8 that the slope set up on support 7, and the upper end of earth axle 8 has linked firmly earth 9, and the axial has linked firmly earth gear 10 and moon gear 11 on support 7, and output two 6b can drive earth gear 10 and moon gear 11 and rotate, and earth gear 10 can drive earth axle 8 and rotate around the axis of earth axle 8, and earth axle 8 passes moon gear 11 and earth gear 10. The internal tooth part D' of the output gear ring 6b1 is in transmission connection with the rotating shaft of the motor 5 through gear transmission, and the external tooth part E of the output gear ring 6b1 drives the earth gear 10 and the moon gear 11 to rotate through two-way gear set transmission respectively. The angle formed by the earth shaft 8 and the main shaft 4 is 23.5 °. Rotation speed of the movable plate 3: rotational speed of the moon gear 11: the rotation speed of the earth gear 10 is 1:12.3: 365.2.

The earth shaft 8 is fixedly connected with a first ball head 13 which is coaxially arranged, the middle part of the earth gear 10 is provided with a spherical groove for the first ball head 13 to be embedded, the first ball head 13 is embedded in the spherical groove, and the first ball head 13 is fixedly connected with the earth gear 10 in the circumferential direction. The earth gear 10 comprises an upper earth half gear 10a and a lower earth half gear 10b, the upper earth half gear 10a and the lower earth half gear 10b are fixedly connected through screws, the inner end surfaces of the upper earth half gear 10a and the lower earth half gear 10b are respectively provided with a hemispherical groove with corresponding structure and position, and the two hemispherical grooves form the spherical grooves. The first ball head 13 is fixedly connected with the earth shaft 8, and the first ball head 13 is embedded in the spherical groove formed by the two hemispherical grooves, so that the ball head positioning device has the advantages of good ball head positioning effect and convenience in assembly.

The earth shaft 8 is provided with a moon support 17, the upper end of the moon support 17 is fixedly connected with a moon 12, the middle part of the moon support 17 is provided with a sliding sleeve 12a, the sliding sleeve 12a is sleeved on the earth shaft 8, the lower end of the moon support 17 is movably connected with a moon gear 11, and the moon gear 11 can drive the moon support 17 to move so that the moon 12 horizontally rotates around the earth 9. Moon gear 11 is located the upside of earth gear 10, drive plate 14 has been placed to the upper end face of moon gear 11, link firmly the guide arm 15 of level setting on the drive plate 14, there is convex guide pillar 16 in a terminal surface location of moon gear 11, be equipped with the guiding hole 16a that runs through on the guide pillar 16, guide arm 15 and guiding hole 16a phase-match and guide arm 15 pass through guiding hole 16a, be equipped with spout 14a on the drive plate 14, the lower extreme of moon support 17 has linked firmly slider 17a and slider 17a inlays in spout 14a, the tank bottom of spout 14a is 23.5 ° to 28.6 ° with the contained angle b that the horizontal plane formed. The middle part of the driving plate 14 is provided with a second ball head 18 for the earth shaft 8 to pass through, and the second ball head 18 is connected with the earth shaft 8.

One side of the movable plate 3 is axially fixedly connected with a rotating seat 19, the rotating seat 19 and the movable plate 3 have the same rotating speed and reverse rotating directions, the lower end of the earth shaft 8 is axially fixedly connected to one side of the axis of the rotating seat 19, and the center of the ball head I13 is positioned on the axis of the rotating seat 19. The main shaft 4 is fixedly connected with a first gear 20, the rotating base 19 is fixedly connected with a second gear 21, the movable plate 3 is axially fixedly connected with odd transmission gears 22, the adjacent transmission gears 22 are sequentially meshed, the transmission gears 22 on two sides are respectively meshed with the first gear 20 and the second gear 21, and the number of teeth of the first gear 20 is the same as that of the second gear 21.

The other side axial of fly leaf 3 has linked firmly roating seat two 23, roating seat 19 is the same with the rotational speed of fly leaf 3 and turns to opposite directions, it has the gear three 24 the same with the gear 20 tooth number to link firmly on roating seat two 23, the opposite side axial of fly leaf 3 has linked firmly odd number drive gear 22, adjacent drive gear 22 meshes mutually in proper order, the drive gear 22 that is located both ends meshes with gear three 24 in gear one 20 respectively, roating seat two 23 is equipped with the inclined shaft 25 that the slope set up, inclined shaft 25 sets up with earth's ball axle 8 parallel all the time, the upper end of inclined shaft 25 is equipped with the direct light lamp 26 that can send direct light, direct light lamp 26 adopts the LED laser lamp. The direct light 26 is horizontally arranged, and the center of the globe 9 is arranged on the light of the direct light 26.

The movable plate 3 is fixedly connected with a second support 27, the oblique shaft 25 penetrates through the second support 27, the outer side of the oblique shaft 25 is sleeved with a positioning cylinder 28, the upper end of the positioning cylinder 28 is provided with an injection lamp holder 29, the injection lamp holder 29 is placed on the upper end face of the positioning cylinder 28, the upper end of the oblique shaft 25 is fixedly connected with a third bulb 30, and the third bulb 30 is embedded on the injection lamp holder 29. The second support 27 is axially and fixedly connected with a lower positioning cylinder 34, the inclined shaft 25 penetrates through the lower positioning cylinder 34, the upper end of the lower positioning cylinder 34 is fixedly connected with the positioning cylinder 28, and a plane bearing 35 is arranged between the lower end of the positioning cylinder 28 and the second support 27, so that the positioning cylinder 28 is axially positioned on the second support 27 well and can smoothly rotate relative to the second support 27.

The upper end face of the second rotating seat 23 is an inclined plane which is obliquely arranged, the angle formed by the inclined plane and the horizontal plane is 23.5 degrees, the upper end of the second rotating seat 23 is positioned with a connecting sleeve 31, the lower end of the oblique shaft 25 is embedded on the connecting sleeve 31, and a bearing 33 is arranged between the connecting sleeve 31 and the second rotating seat 23. The connecting sleeve 31 is connected with a screw 32 in a threaded manner, the second bracket 27 is provided with a strip-shaped hole 27a which penetrates through, and the screw 32 penetrates through the strip-shaped hole 27 a.

In operation, the motor 5 drives the gear a and the gear B to rotate, the gear a is meshed with the output gear 6a1 to drive the output gear 6a1 to rotate, and the link 6a2 drives the movable plate 3 to rotate. The rotation of the gear B causes the output ring gear 6B1 to rotate by meshing with the gear B and the gear B ', meshing with the gear C and the gear C ', and meshing with the gear D and the internal tooth portion D ' of the output ring gear 6B 1.

The external tooth part E of the output gear ring 6b1 drives the earth gear 10 to rotate through the transmission of the gear F ', the gear F ″ and the gear F' ″ arranged on the movable plate 3, and the rotation of the earth gear 10 drives the first ball 13 and the earth shaft 8 to rotate around the axis of the earth shaft 8, so that the rotation of the earth 9 is realized.

The external tooth portion E of the output ring gear 6b1 drives the lunar gear 11 to rotate through the gear E ', the gear E ", and the gear E'" provided on the movable plate 3. The rotation of the moon gear 11 drives the driving plate 14 to rotate through the second ball head 18, and simultaneously drives the driving plate 14 to horizontally move relative to the moon gear 11 along the guide of the guide post 16 and the guide hole 16a, and as the slide block 17a at the lower end of the moon support 17 is embedded in the slide groove 14a, the driving plate 14 drives the moon support 17 to horizontally rotate, so that the moon 12 horizontally rotates around the earth 9, and the revolution of the moon 12 around the earth 9 is realized. The gear transmission can be replaced by chain and chain wheel transmission and synchronous belt transmission.

The rotation of the movable plate 3 is meshed through the first gear 20, the transmission gear 22 and the second gear 21 to drive the rotating seat 19 to rotate, the rotating seat 19 rotates to enable the inclined earth shaft 8 to rotate smoothly, and the demonstration mechanism can operate more truly and accurately.

The rotation of the movable plate 3 is engaged with the first gear 20, the transmission gear 22 and the third gear 24 to drive the second rotating base 23 to rotate. Since the number of teeth of the first gear 20 and the third gear 24 is the same, and the number of the transmission gears 22 is odd, the rotating speed and the rotating direction of the rotating base 19 and the rotating base 23 are the same.

When the second rotating base 23 rotates, the screw 32 screwed on the connecting sleeve 31 penetrates through the strip-shaped hole 27a on the second support 27, so that the connecting sleeve 31 is circumferentially and fixedly connected to the second support 27, the connecting sleeve 31 moves up and down relative to the second rotating base 23 and drives the inclined shaft 25 to rotate around the axis of the second rotating base 23, and the inclined shaft 25 and the earth shaft 8 are always arranged in parallel. Because the lower end of the positioning cylinder 28 is fixedly connected to the lower positioning cylinder 34, when the second rotating seat 23 drives the inclined shaft 25 to rotate, the spotlight holder 29 placed on the second support 27 is always at the same height, and because the third bulb 30 is embedded on the spotlight holder 29, the spotlight holder 29 cannot rotate relative to the third support 7, so that light of the straight spotlight 26 always irradiates the center of the globe 9, and the irradiation relation between sunlight and the globe 9 is simulated more truly.

The movable plate 3 rotates to drive the earth 9 to revolve, the earth gear 10 drives the earth 9 to rotate through the earth shaft 8, the moon gear 11 drives the moon 12 to horizontally rotate around the earth 9 through the moon support 17, the local moon operation demonstration mechanism simultaneously drives the earth 9 to rotate, the earth 9 to revolve and the moon 12 to revolve through the motor 5, and light of the direct-emitting lamp 26 is enabled to horizontally irradiate towards the center of the earth 9 all the time, and the device has the advantages of being accurate in operation, simple in structure and reliable in transmission.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. Earth-moon running demonstration mechanism, including base (1), base (1) on be equipped with fixed plate (2), fly leaf (3) and main shaft (4), base (1), fixed plate (2) with main shaft (4) link firmly mutually, fixed plate (2) on be equipped with motor (5) and reduction gears (6), reduction gears (6) including input and output one (6a), output two (6b) that link to each other with the pivot of motor (5), output one (6a) can drive fly leaf (3) rotate, its characterized in that, one side of fly leaf (3) link firmly support (7), support (7) on be equipped with earth axle (8) that the slope set up, the upper end of earth axle (8) link firmly earth (9), support (7) go up axial and link firmly earth gear (10) and moon gear (11), the second output end (6b) can drive the earth gear (10) and the moon gear (11) to rotate, the earth gear (10) can drive the earth shaft (8) to rotate around the axis of the earth shaft (8), the earth shaft (8) passes through the moon gear (11) and the earth gear (10), a moon support (17) is arranged on the earth shaft (8), the upper end of the moon support (17) is fixedly connected with a moon (12), the middle part of the moon support (17) is provided with a sliding sleeve (12a), the sliding sleeve (12a) is sleeved on the earth shaft (8), the lower end of the moon support (17) is movably connected with the moon gear (11), and the moon gear (11) can drive the moon support (17) to move so that the moon (12) horizontally rotates around the earth (9).

2. The earth-moon movement demonstration mechanism according to claim 1, wherein the earth shaft (8) is fixedly connected with a first ball head (13) which is coaxially arranged, the middle part of the earth gear (10) is provided with a spherical groove for the first ball head (13) to be embedded, the first ball head (13) is embedded in the spherical groove, and the first ball head (13) is circumferentially and fixedly connected with the earth gear (10).

3. The mechanism for demonstrating earth and moon movement as claimed in claim 2, wherein said earth gear (10) comprises an upper earth half gear (10a) and a lower earth half gear (10b), said upper earth half gear (10a) is fixedly connected with said lower earth half gear (10b), the inner end surfaces of said upper earth half gear (10a) and said lower earth half gear (10b) are respectively provided with a hemispherical groove with corresponding structure and position, and said two hemispherical grooves form said spherical groove.

4. The earth and moon movement demonstration mechanism according to claim 1, wherein the moon gear (11) is located on the upper side of the earth gear (10), a driving plate (14) is placed on the upper end face of the moon gear (11), a horizontally arranged guide rod (15) is fixedly connected to the driving plate (14), a protruding guide post (16) is positioned on one end face of the moon gear (11), a through guide hole (16a) is arranged on the guide post (16), the guide rod (15) is matched with the guide hole (16a) and the guide rod (15) passes through the guide hole (16a), a sliding groove (14a) is arranged on the driving plate (14), a sliding block (17a) is fixedly connected to the lower end of the moon support (17) and the sliding block (17a) is embedded in the sliding groove (14a), a second ball head (18) for the earth shaft (8) to pass through is positioned in the middle of the driving plate (14), and the second ball head (18) is connected with the earth shaft (8).

5. The mechanism according to claim 2 or 3, wherein one side of the movable plate (3) is axially fixed with a rotary seat (19), the rotary seat (19) and the movable plate (3) have the same rotation speed and opposite rotation directions, the lower end of the earth shaft (8) is axially fixed on one side of the axis of the rotary seat (19), the center of the first ball head (13) is positioned on the axis of the rotating seat (19), the main shaft (4) is fixedly connected with a first gear (20), the rotating seat (19) is fixedly connected with a second gear (21), odd transmission gears (22) are axially fixedly connected on the movable plate (3), adjacent transmission gears (22) are sequentially meshed, the transmission gears (22) positioned on two sides are respectively meshed with a first gear (20) and a second gear (21), the number of teeth of the first gear (20) is the same as that of the second gear (21).

6. The mechanism according to claim 1, 2, 3 or 4, wherein the first output end (6a) is a first output gear (6a1) axially fixed on the main shaft (4), the first output gear (6a1) is vertically fixed with a connecting rod (6a2), the connecting rod (6a2) is located at one side of the axis of the main shaft (4), and the lower end of the connecting rod (6a2) is inserted on the movable plate (3).

7. The mechanism for demonstrating earth and moon movement according to claim 1, 2, 3 or 4, wherein said second output end (6b) is an output gear ring (6b1) axially fixed on the fixed plate (2), the internal tooth portion of said output gear ring (6b1) is in transmission connection with the rotating shaft of said motor (5) through gear transmission, and the external tooth portion of said output gear ring (6b1) drives said earth gear (10) and moon gear (11) to rotate through two sets of gear transmission respectively.

8. The mechanism according to claim 1 or 2 or 3 or 4, characterized in that the other side of the movable plate (3) is axially connected with a second rotating base (23), the rotating base (19) and the movable plate (3) have the same rotating speed and opposite rotating directions, the second rotating base (23) is connected with a third gear (24) having the same number of teeth as the first gear (20), the other side of the movable plate (3) is axially connected with an odd number of transmission gears (22), the adjacent transmission gears (22) are sequentially meshed, the transmission gears (22) at the two ends are respectively meshed with the first gear (20) and the third gear (24), the second rotating base (23) is provided with an oblique shaft (25) which is obliquely arranged, the oblique shaft (25) is always arranged parallel to the earth shaft (8), the upper end of the oblique shaft (25) is provided with a direct-emitting lamp (26) which can emit light, the straight spot lamp (26) is horizontally arranged, and the center of the sphere of the earth (9) is arranged on the light ray of the straight spot lamp (26).

9. The moon-driving demonstration mechanism according to claim 8, wherein the movable plate (3) is fixedly connected with a second bracket (27), the oblique shaft (25) penetrates through the second bracket (27), a positioning cylinder (28) is sleeved outside the oblique shaft (25), a shooting lamp holder (29) is arranged at the upper end of the positioning cylinder (28), the shooting lamp holder (29) is placed on the upper end surface of the positioning cylinder (28), a third ball head (30) is fixedly connected with the upper end of the oblique shaft (25), the third ball head (30) is embedded in the shooting lamp holder (29), a lower positioning cylinder (34) is axially fixedly connected with the second bracket (27), the oblique shaft (25) penetrates through the lower positioning cylinder (34), and the upper end of the lower positioning cylinder (34) is fixedly connected with the lower end of the positioning cylinder (28).

10. The moon and earth movement demonstration mechanism according to claim 9, wherein the upper end surface of the second rotating seat (23) is an inclined surface which is obliquely arranged, the angle formed by the inclined surface and the horizontal surface is 23.5 degrees, a connecting sleeve (31) is positioned at the upper end of the second rotating seat (23), the lower end of the oblique shaft (25) is embedded on the connecting sleeve (31), a screw is connected to the connecting sleeve (31) through a thread, a penetrating strip-shaped hole (27a) is formed in the second support (27), and the screw penetrates through the strip-shaped hole (27 a).