CN210804988U

CN210804988U - Demonstration teaching aid for ground rotation deflection force

Info

Publication number: CN210804988U
Application number: CN201921913654.8U
Authority: CN
Inventors: 丘锦添; 刘为
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-06-19
Anticipated expiration: 2029-11-07

Abstract

The utility model discloses a ground commentaries on classics partial pressure demonstration teaching aid, including glass cavity, the plane globe that has colored liquid emitter, compound chassis, be equipped with electronic commentaries on classics machine and electronic commentaries on classics machine switch, circuit control device such as colored liquid emitter switch in the compound chassis, globe and glass cavity link to each other. The utility model discloses an utilize the motion direction of colored liquid on the at the uniform velocity rotation globe and the motion direction difference of colored liquid on static globe to indicate the influence that the motion direction received, reached the purpose that demonstration ground deflection power influences earth's surface horizontal motion object direction of motion. In addition, in order to solve the problem that the original product can only demonstrate the influence on the motion direction of a horizontal moving object from north to south, a plurality of groups of colored liquid launching devices in different directions are designed; in order to solve the problem of uneven rotating speed of the manually rotated globe, an electric rotating machine is designed to drive the globe to rotate so that the rotating speed is uniform.

Description

Demonstration teaching aid for ground rotation deflection force

Technical Field

The utility model relates to a scientific demonstration of high school geography teaching specifically is a ground commentaries on classics partial pressure demonstration teaching aid.

Background

Scientific demonstration of high school geography teaching can show that the effect of the influence of the turning deviation force on the motion direction of the ground surface horizontal moving object is achieved, students can feel visually conveniently, and the learning interest of the students is improved. Through patent search, three works related to the patent are found. The two products with the authorization publication numbers of CN205375967U and CN2665845Y are demonstrated by utilizing a rotating disc and the like, students need to convert thinking to understand that the direction of a horizontal moving object on the earth is influenced by the turning force, and the demonstration effect is poor in intuition. The other work with the authorization publication number of CN891049733A uses a plane globe and self-flowing colored liquid for demonstration, but has two main defects that the movement direction of a horizontal moving object from north to south can only be demonstrated, and the influence of angular acceleration caused by uneven rotating speed of the globe by manual rotation is not scientific and precise enough.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a ground turns to partial force demonstration teaching aid to solve the problem that proposes in the above-mentioned background art.

For the purpose of complaining in the realization, the utility model provides a following technical scheme:

a demonstration teaching aid for the turning deflection force comprises a glass cavity, a planar globe with a colored liquid emitting device and a composite chassis, wherein a motor-driven rotary machine, a motor-driven rotary machine switch and a circuit control device of the colored liquid emitting device switch are arranged in the composite chassis, and the composite chassis, the globe and the glass cavity are connected.

As a further aspect of the present invention: the left side wall of the glass cavity is provided with an opening and closing window.

As a further aspect of the present invention: the switch of the electric rotating machine is controlled by the switch of the circuit control device.

As a further aspect of the present invention: the emission of colored liquid in 6 different directions on the plane globe is controlled by a circuit control device.

Compared with the prior art, the beneficial effects of the utility model are that: the influence on the movement direction is indicated by the difference between the flow direction of the colored liquid on the constant-speed rotating globe and the flow direction of the colored liquid on the static globe, so that the purpose of demonstrating the influence of the turning deviation force on the movement direction of a ground surface horizontal moving object is achieved. In addition, in order to solve the problem that the original product can only demonstrate the influence on the motion direction of a horizontal moving object from north to south, colored liquid launching devices in different directions are designed; in order to solve the problem of uneven rotating speed of the manually rotated globe, an electric rotating machine is designed to drive the globe to rotate so that the rotating speed is uniform.

Drawings

Fig. 1 is a schematic structural diagram of a turning force demonstration teaching aid.

2-1 and 2-2 are comparative graphs of the effect of the experimental process of the turning deviation force demonstration teaching aid.

In the figure: 1. the device comprises a composite chassis, 2 an electric rotating machine switch, 3a colored liquid emitting device switch, 4 a glass cavity, 5 an openable window, 6 a plane globe and 7 a colored liquid emitting device.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

The first embodiment is as follows: referring to fig. 1, a demonstration teaching aid for ground rotation deflection force comprises a composite chassis 4, wherein an electric rotating machine and a circuit control device are arranged in the composite chassis, and the circuit control device comprises an electric rotating machine switch 2, a colored liquid emitting device 3, a planar globe 6, a colored liquid emitting device 7, a glass cavity 4 and an openable window 5.

The first step of the demonstration: the moving direction of the horizontal moving object under the condition that the earth does not rotate, namely the earth does not have a turning deflection force is simulated, and the 6 colored liquid transmitting device switches 2 on the composite chassis 1 are sequentially pressed. The colored liquid emitting devices on the globe 6 form a colored liquid motion trace respectively as shown in figure 2-1.

And a second demonstration step: the rotation of the earth is simulated, an electric rotating machine switch 2 on a composite chassis 1 is pressed, and the globe is driven by the electric rotating machine to rotate from west to east at a constant speed.

And a third step of demonstration: under the condition of simulating the rotation of the earth, namely, the motion direction of the horizontally moving object is influenced by the influence of the rotating deviation force, under the condition of pressing the electric rotating machine switch 2, the 6 colored liquid launching devices 2 are pressed down in sequence.

According to the principle of the influence of the turning force on the moving direction of the horizontal moving object on the ground surface, the moving direction of the colored liquid emitted by the

emitting devices

①, ② and ③ in the northern hemisphere is deviated to the right side of the advancing direction, and the moving direction of the colored liquid emitted by the emitting

devices

④, ⑤ and ⑥ in the southern hemisphere is deviated to the left side of the advancing direction, so far, two colored liquid flow traces of the moving tracks are respectively formed on the 6 colored liquid emitting devices on the globe, and the moving trace of the colored liquid and the direction deviation of the moving trace of the colored liquid formed firstly, namely the deviation of the moving direction of the horizontal moving object on the ground surface under the action of the turning force are shown in fig. 2-2.

Example two: on the basis of the first embodiment, the openable window 5 is arranged on the left side wall of the glass cavity 4, and the openable window 5 is opened after the work is finished, so that flowing traces of colored liquid on the surface of the globe can be conveniently removed, and the colored liquid in the colored liquid emitting device can be conveniently added. The openable window 5 is closed during working, and the influence of the external environment on the experiment demonstration inside the glass cavity 4 is avoided.

It should be particularly noted that the electric rotating machine and the colored liquid launching device are the main innovation points of the teaching aid, the defects that the rotating speed of the simulated earth is uneven and the ground surface can only be simulated to be influenced by the turning deviation force from the north to the south of the moving object are effectively overcome, the effect of teaching aid demonstration is obviously enhanced, and students can visually observe different expressions of the influence of the turning deviation force of the hemispheres from the north to the south.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a ground turns partial pressure demonstration teaching aid which characterized in that, includes glass cavity (4), plane globe (6), composite chassis (1), is equipped with electronic commentaries on classics machine and circuit control device in composite chassis (1), and composite chassis (1), plane globe (6) link to each other with glass cavity (4).

2. A demonstration teaching aid according to claim 1, characterized in that the left side wall of the glass cavity (4) is provided with an openable and closable window (5).

3. A demonstration teaching aid according to claim 2, characterised in that 6 coloured liquid emitting means (7) of different emitting directions are arranged on the surface of the planar globe (6).

4. A demonstration teaching aid according to claim 3, characterised in that the circuit control means of the composite chassis (1) comprises an electric tumbler switch (2) controlling 6 coloured liquid emitter switches (3).

5. A demonstration teaching aid according to claim 4, characterized in that the electric rotating machine switch (2) controls the electric rotating machine to drive the globe to move from west to east at a constant speed, and the 6 colored liquid emitting devices (3) respectively control the 6 colored liquid emitting devices (7) to emit a certain amount of colored liquid in different directions.