CN113554931A - A Tidal Range Dynamic Demonstrator Applicable to Geography Teaching - Google Patents

Abstract

The invention discloses a tidal range dynamic demonstration instrument suitable for geography teaching, comprising a globe, a tidal ellipsoid, a bracket, a rotating handle, a retractable distance measuring rod and a base; the base is connected with an arc-shaped bracket, and the A globe is installed between the top and bottom of the bracket, a rotating handle that can drive the globe to rotate is arranged at the top of the bracket, a tidal ellipsoid is arranged outside the globe, and the tidal ellipsoid is fixedly connected to the bracket; the surface of the globe is provided with a tidal ellipsoid. There are retractable ranging rods, which are respectively set at the equator, the 30° latitude circle and the 60° latitude circle. The invention can realize the rotation of the globe by rotating the handle, and can read the tidal heights at different positions at the same time, so as to understand the dynamic changing law of the tidal heights. The present invention is simple in structure, easy to operate and convenient to carry. It has good practical value and broad application prospects in the field of teaching display appliances.

Description

Tidal range dynamic demonstration instrument suitable for geography teaching

Technical Field

The invention relates to the field of teaching display appliances, in particular to a demonstration instrument for dynamic changes of tide.

Background

The tide ellipsoid demonstration teaching aid is a model in which the water body on the earth surface in the earth-moon system is acted by tide force to form a similar egg-shaped ellipsoid, the tide ellipsoid is a globe convenient for knowing the tide rise and fall on the earth, people imitate the shape of the tide ellipsoid and reduce the model according to a certain proportion, the model of the tide ellipsoid is manufactured, a globe is arranged in the tide ellipsoid, the tide change conditions of different positions of the earth can be conveniently observed, and the tide rise and fall time and position can be conveniently understood by a user. At present, the tide ellipsograph is not widely applied to teaching or other fields, and particularly, when students learn part of tide, only plane static pictures on books can be observed, so that the change situation of actual tide is difficult to imagine. Accordingly, one skilled in the art provides a tidal ellipsometer to solve the problems set forth in the background above.

Disclosure of Invention

The invention aims to provide a tidal range dynamic demonstration instrument suitable for geography teaching, which can observe the height change of tidal water at different positions of the earth while demonstrating the rotation of the earth.

The technical scheme adopted by the invention is as follows: a tidal range dynamic demonstration instrument suitable for geography teaching comprises a globe, a tide ellipsoid, a bracket, a rotary handle, a telescopic distance measuring rod and a base;

an arc-shaped bracket is connected to the upper surface of the base, a globe is arranged between the top and the bottom of the bracket, a rotating handle capable of driving the globe to rotate is arranged at the top end of the bracket, a tide ellipsoid surface is arranged outside the globe, and the tide ellipsoid surface is fixedly connected with the bracket;

the surface of the globe is provided with a telescopic distance measuring rod which is respectively arranged at three positions of an equator, a 30-degree weft ring and a 60-degree weft ring, and the dynamic tide change characteristics of regions near the equator, at low and medium latitudes and at high latitudes can be observed;

scalable range finding pole includes slidable ball, spring, telescopic link and scale, but the spring is established in telescopic link's inside, and telescopic link's top is provided with slidable ball, and telescopic link's surface is provided with the scale.

Preferably, the tide ellipsoid is made of blue transparent plastic.

The tidal range dynamic demonstrator of the invention realizes the rotation of the globe by shifting the rotating handle, and the length of the telescopic distance measuring rod is controlled by the spring in the rotating process, so that the height of tides at different positions can be read. The tide ellipsoid is connected with the bracket but can not rotate, and the vertical distance between the earth surface and the tide ellipsoid is read by rotating the globe, so that the quantitative recognition of the dynamic change of the tidal range is realized.

Has the advantages that: according to the invention, the rotation of the globe can be realized by rotating the handle, and the height of tides at different positions can be read by the rotation, so that the dynamic change rule of the height of the tides can be known. The invention has simple structure, easy operation and convenient carrying. The teaching demonstration device has good practical value and wide application prospect in the field of teaching demonstration appliances.

Drawings

FIG. 1 is a schematic side view of a tidal dynamics demonstrator according to the present invention.

Fig. 2 is a schematic front view of the tidal dynamics demonstration instrument of the present invention.

Fig. 3 is a schematic view of a first structure of the telescopic distance measuring rod of the present invention.

Fig. 4 is a schematic view of a second structure of the telescopic distance measuring rod of the present invention.

Description of reference numerals: 1-a globe; 2-a tidal ellipsoid; 3-a scaffold; 4-rotating the handle; 5-a telescopic distance measuring rod; 6-a base; 51-a slidable ball; 52-a spring; 53-a telescopic rod; 54-graduation.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 and 2, a tidal range dynamic demonstrator suitable for geography teaching comprises a globe 1, a tide ellipsoid 2, a bracket 3, a rotary handle 4, a telescopic distance measuring rod 5 and a base 6;

an arc-shaped bracket 3 is connected to the upper surface of the base 6, a globe 1 is arranged between the top and the bottom of the bracket 3, a rotating handle 4 capable of driving the globe 1 to rotate is arranged at the top end of the bracket 3, a tide ellipsoid surface 2 is arranged outside the globe 1, and the tide ellipsoid surface 2 is fixedly connected with the bracket 3; the tide ellipsoid surface 2 is made of blue transparent plastic. The surface of the globe 1 is provided with a telescopic distance measuring rod 5, the telescopic distance measuring rod 5 is respectively arranged at three positions of an equator, a 30-degree weft ring and a 60-degree weft ring, and the dynamic tide change characteristics of regions near the equator, at low and medium latitudes and at high latitudes can be observed;

as shown in fig. 3 and 4, the telescopic distance measuring rod 5 includes a slidable ball 51, a spring 52, a telescopic rod 53 and a scale 54, the spring 52 is disposed inside the telescopic rod 53, the slidable ball 51 is disposed at the top end of the telescopic rod 53, and the scale 54 is disposed on the outer surface of the telescopic rod 53.

The tidal range dynamic demonstrator of the invention realizes the rotation of the globe 1 by dialing the rotating handle, and in the rotating process, the spring 52 controls the length of the telescopic distance measuring rod 5, so that the height of tides at different positions can be read. The tide ellipsoid 2 is connected with the bracket 3 but can not rotate, and the vertical distance between the earth surface and the tide ellipsoid is read by rotating the globe 1, so that the quantitative recognition of the dynamic change of the tidal range is realized.

The present invention is described by way of example, and not by way of limitation, as the present description is deemed to be the most widely varied and consistent with the principles and features disclosed herein.

Claims (2)

1. The tidal range dynamic demonstration instrument suitable for geography teaching is characterized in that: comprises a globe, a tide ellipsoid, a bracket, a rotary handle, a telescopic distance measuring rod and a base;

an arc-shaped bracket is connected to the upper surface of the base, a globe is arranged between the top and the bottom of the bracket, a rotating handle capable of driving the globe to rotate is arranged at the top end of the bracket, a tide ellipsoid surface is arranged outside the globe, and the tide ellipsoid surface is fixedly connected with the bracket;

the surface of the globe is provided with a telescopic distance measuring rod which is respectively arranged at three positions of an equator, a 30-degree weft ring and a 60-degree weft ring;

scalable range finding pole includes slidable ball, spring, telescopic link and scale, but the spring is established in telescopic link's inside, and telescopic link's top is provided with slidable ball, and telescopic link's surface is provided with the scale.

2. The tidal range dynamic demonstrator suitable for geography teaching according to claim 1, wherein: the tide ellipsoid surface is made of blue transparent plastic.

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