CN212809572U

CN212809572U - Teaching model for junior middle school geography

Info

Publication number: CN212809572U
Application number: CN202022142814.2U
Authority: CN
Inventors: 刘彩玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-03-26
Anticipated expiration: 2030-09-25

Abstract

The utility model discloses a teaching model is used to junior middle school geography relates to teaching model technical field. The utility model discloses a: the base and a fixed star model are arranged above the base, and the base further comprises a planetary track set arranged around the fixed star model, and the planetary track set is in differential rotation connection with the fixed star model. The utility model discloses a set up a fixed star model, set up planet track group in the outside of fixed star model in addition to this constitutes the movement track between the celestial body, sets up to the differential rotation between planet track group and the fixed star model in addition and is connected, with this motion between the celestial body that can simulate out, makes the cognition to the celestial body motion more thorough through such mode, and the student understands more easily, can simulate the orbit that changes fixed star rotation and little planet around the fixed star revolution, with this can clearly express the motion between the celestial body.

Description

Teaching model for junior middle school geography

Technical Field

The utility model relates to a teaching model technical field especially relates to a teaching model is used to junior middle school geography.

Background

A star is a celestial body held together by the plasma of light-emitting spheres through its own weight. The star closest to the earth is the sun. At night, many other stars are visible from the earth to the naked eye, and because of their great distance from the earth, they appear as a plurality of fixed luminous points in the sky. Historically, the most prominent stars have been divided into constellations and starry sky, with the brightest star getting the appropriate name. Astronomers have compiled star charts to identify known stars and provide standardized star denominations. Most stars are invisible to the naked eye from the earth, including all stars, the galaxy, outside of our galaxy.

As is known, teaching and learning of celestial stars can be carried out in class of junior middle schools, and since the stars of the galaxy are beyond the cognition of people, the study is difficult, so that a junior middle geography teaching model is designed to carry out explanation and analysis on the stars in the galaxy.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a teaching model is used to junior middle school geography.

The utility model provides a pair of teaching model is used to junior middle school geography, include: the base and a fixed star model are arranged above the base, and the base further comprises a planetary track set arranged around the fixed star model, and the planetary track set is in differential rotation connection with the fixed star model.

Furthermore, the base is of a vertical cylindrical structure, and the top of the base is provided with a turntable which rotates in the horizontal direction.

Further, a lug boss is formed at the top of the rotary disc; planetary track group is fixed in including one vertical to just being annular first track on the bellying, the top pivotally connected with one of first track inner circle is at its inside level to rotating and be annular second track, orbital inner circle pivotally connected with one of second is at its inside vertical to rotating and be annular third track, orbital inner circle pivotally connected with one is at its inside level to rotating and be annular fourth track, fixed star model pivotally connected in orbital inside of fourth to it rotates to form at its inside level.

The driving mechanism is used for driving the first rail, the second rail, the third rail, the fourth rail and the star model to generate differential motion.

Further, the driving mechanism comprises a first motor and a second motor which are fixed inside the base, wherein the second motor is a hollow shaft motor and is fixed at the top of the first motor through a connecting rod, the hollow shaft of the second motor is fixed with the center of the bottom of the turntable, the output shaft of the first motor penetrates through the hollow shaft and penetrates through the turntable and the protruding portion, a base is fixed at the top of the output shaft, and the bottom of the outer ring of the second rail is fixed with the top of the base.

Furthermore, a plurality of heat dissipation holes are uniformly formed in the side wall of the base.

Compared with the prior art, the utility model provides a teaching model for junior middle school geography has following beneficial effect:

the utility model provides a junior middle school is as follows with beneficial effect that teaching model possesses:

the utility model discloses a set up a fixed star model, set up planet track group in the outside of fixed star model in addition to this constitutes the movement track between the celestial body, sets up to the differential rotation between planet track group and the fixed star model in addition and is connected, with this motion that can simulate out between the celestial body, makes through such mode more thorough to the cognition of celestial body motion, and the student understands more easily.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

fig. 2 is an enlarged schematic view of the driving mechanism of the present invention;

fig. 3 is a front view of the present invention;

fig. 4 is a cross-sectional view along the direction a-a of the present invention.

Reference numbers in the figures: 1. a base; 11. a turntable; 12. a boss portion; 2. a fixed star model; 3. a planetary track set; 31. a first track; 32. a second track; 321. a base; 33. a third track; 34. a fourth track; 4. a first motor; 5. a connecting rod; 6. and a second motor.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, an embodiment of the present invention provides a teaching model for junior middle school geography, including: the base 1 and a fixed star model 2 are arranged above the base 1, and the base further comprises a planetary track set 3 arranged around the fixed star model 2, wherein the planetary track set 3 is in differential rotation connection with the fixed star model 2.

It should be noted that, as shown in fig. 4, the base 1 is a vertical cylindrical structure, and a rotating disc 11 that rotates in a horizontal direction is disposed on the top of the base 1.

In the embodiment, a fixed star model 2 is arranged, a planetary track group 3 is arranged outside the fixed star model 2, so that the movement locus between celestial bodies is constructed, and in addition, a differential rotation connection is arranged between the planetary track group 3 and the fixed star model 2, so that the movement between the celestial bodies can be simulated.

As shown in FIG. 1, in some embodiments, the top of the turntable 11 is configured with a boss 12; the planetary track set 3 includes a first track 31 fixed on the boss 12 and having a ring shape in a vertical direction, a second track 32 having a ring shape and rotating in a horizontal direction in the first track 31 is pivotally connected to the top of the inner ring, a third track 33 having a ring shape and rotating in a vertical direction in the second track 32 is pivotally connected to the inner ring, a fourth track 34 having a ring shape and rotating in a horizontal direction in the third track 33 is pivotally connected to the inner ring, and the star model 2 is pivotally connected to the inner part of the fourth track 34 to rotate in a horizontal direction in the fourth track 34.

In order to generate differential rotation between the planetary track set 3 and the fixed star model 2, please refer to fig. 4, in some embodiments, the planetary track set further includes a driving mechanism for driving the first track 31, the second track 32, the third track 33, the fourth track 34 and the fixed star model 2 to generate differential motion, wherein the driving mechanism includes a motor i 4 and a motor ii 6 fixed inside the base 1, wherein the motor ii 6 is a hollow shaft motor and fixed to the top of the motor i 4 through a connecting rod 5, the hollow shaft of the motor ii 6 is fixed to the bottom center of the turntable 11, the output shaft of the motor i 4 passes through the hollow shaft and penetrates through the turntable 11 and the protrusion 12, the top of the output shaft is fixed to a base 321, and the bottom of the outer ring of the second track 32 is fixed to the top of the base 321.

In this embodiment, the driving assembly drives the planetary track set 3 and the fixed star model 2 to generate differential rotation according to the following working principle: the second motor 6 drives the rotating disc 11 to rotate, so that the first track 31 on the rotating disc 11 rotates, in addition, the output shaft of the first motor 4 penetrates through the hollow shaft on the second motor 6 to be fixed with the base 321, so that the second track 32 can be driven to rotate, the rotating speed between the first motor 4 and the second motor 6 can be adjusted, so that differential rotation can be generated between the first track 31 and the second track 32, in addition, the differential rotation between the third track 33, the fourth track 34 and the fixed star model 2 can be shifted by hands, and celestial body movement is displayed for students by means of inertia during rotation.

Furthermore, a plurality of heat dissipation holes are uniformly formed in the side wall of the base 1.

The above is only the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention can be used in other related technical fields, directly or indirectly, or in the same way as the present invention.

Claims

1. A junior middle school is teaching model for geography, includes: the fixed star model is characterized by comprising a base (1), a fixed star model (2) arranged above the base (1) and a planetary track set (3) arranged around the fixed star model (2), wherein the planetary track set (3) is in differential rotation connection with the fixed star model (2).

2. A junior middle school geography teaching model according to claim 1, wherein the base (1) is a vertical cylindrical structure, and a turntable (11) rotating in a horizontal direction is provided on the top of the base (1).

3. A junior middle school geography teaching model according to claim 2, wherein the top of said turntable (11) is constructed with a boss (12); planet track group (3) are including one to be fixed in vertical to and be annular first track (31) on bellying (12), the top pivotally connected with one of first track (31) inner circle is at its inside level to rotating and be annular second track (32), the inner circle pivotally connected with one of second track (32) is at its inside vertical to rotating and be annular third track (33), the inner circle pivotally connected with one of third track (33) is at its inside level to rotating and be annular fourth track (34), fixed star model (2) pivotally connected in the inside of fourth track (34) to form at its inside level to rotating.

4. A junior middle school geography teaching model according to claim 3, further comprising a driving mechanism for driving a differential motion between the first track (31), the second track (32), the third track (33), the fourth track (34), and the star model (2).

5. The junior middle school geography teaching model according to claim 4, wherein the driving mechanism comprises a first motor (4) and a second motor (6) fixed inside the base (1), wherein the second motor (6) is a hollow shaft motor and is fixed on the top of the first motor (4) through a connecting rod (5), the hollow shaft of the second motor (6) is fixed on the center of the bottom of the turntable (11), the output shaft of the first motor (4) passes through the hollow shaft and penetrates through the turntable (11) and the boss (12), a base (321) is fixed on the top of the output shaft, and the bottom of the outer ring of the second rail (32) is fixed on the top of the base (321).

6. The teaching model for junior middle school geography according to claim 1, wherein the side wall of the base (1) is uniformly provided with a plurality of heat dissipation holes.