CN2248903Y - Instrument for demonstration of movement of the Earth - Google Patents

Abstract

The utility model relates to an instrument for the demonstration of the movement of the earth, comprising a sleeve sphere structure, a sphere seat device, a mini sun model and season plates, wherein, the sleeve sphere structure is composed of an inner globe, and an outer transparent concentric sphere composed of a colorless transparent hemisphere and a color transparent hemisphere. The inner globe and the outer transparent sphere all can rotate corresponding to another spherical layer according to respective rotating shafts. In addition, a drive controlling transmission device in the sphere seat comprises a motor a speed reducing gear, a running rubber gear, an earth shaft directing intermediate gear, an earth orientating gear, a globe rotation gear, a season disc gear and an earth shaft directing transmission rod in a multi-layer shaft sleeve.

Description

Earth operation demonstrator

The utility model relates to a kind of earth operation demonstrator, thus especially demonstrate the earth in the solar system, move cause round the clock, the teaching and the science popularization demonstration instrument of four seasons variation phenomenon.

No matter be at geography teaching in middle school or in Popular Science Education, general rely on wall chart and simple teaching aid to the operation of the earth and round the clock, the explanation that changes of tide sunset and the four seasons, often lack natural image, be difficult for being accepted by the student, owing to lack iconicity, being difficult to has clearly explanation to these spontaneous phenomenons, makes and should become uninteresting by lively subject, and teaching efficiency is not good.

At the problems referred to above, the applicant once was developed into a kind of earth operation of merits and demerits demonstrator in 1986, and this instrument obtains the outstanding scientific payoffs first prize that State Education Commission authorizes.This prior art is as technical background of the present utility model, and it has solved iconicity, interesting problem basically, but still has some not enough.

At first, original demonstrator is that a homocentric globe pellucidly is housed again outside the endosphere of a black and white half and half, secondly, because this skin is provided with the scheme of terrestrial globe, makes the setting of its rotating mechanism become very complicated, and used gear and other mechanical part are too much.And owing in the design too many non-type parts are arranged, this makes the running instrument in this prior art produce the accessory difficulty, is difficult to popularize and improve the quality.

Secondly, because the painted transparency of globe is difficult for meeting the demands pellucidly, not only influences outward appearance, and be used also impact effect with the black and white ball.

The purpose of this utility model just be to provide a kind of overcome the above-mentioned deficiency of prior art earth operation demonstrator, it can ten sends out clear, demonstrate visually the earth four seasons form, length changes, is difficult to term in a series of geographical teachings such as polar day polar night, five band division, north and south tropic sunlight direct projection and says clearly spontaneous phenomenon round the clock, makes the more outstanding joint of the theme structure simplification that will demonstrate easy to make simultaneously.

Include two concentric spheroids of the major part that constitutes demonstrator according to earth operation demonstrator of the present utility model, its interior spheroid is the One Earth One Family instrument, being enclosed within the outer field of this terrestrial globe is the outer hyaloplasmic sphere that is made of light gray, colourless each hemisphere, is the ball seat that supports this bilayer ball and transmission is provided for it below described double-deck ball; Also comprise a track plate circle, it is spliced by six arcs, divides equally for every to account for 60 ° arc angle, and width is on the 170mm circle guiding tooth bar and solar term title to be arranged; And a signal Sunny that is used with this loxocosm, it is by a seat supports, and the centre of sphere of its centre of sphere and terrestrial globe is contour.

Below in conjunction with accompanying drawing earth operation demonstrator of the present utility model is described specifically.Wherein:

Fig. 1 is the front elevation of earth operation demonstrator of the present utility model;

Fig. 2 is the cut-open view of earth operation demonstrator of the present utility model;

Fig. 3 looks cut-open view in the end of earth operation demonstrator ball seat of the present utility model;

Fig. 4 is a track plate circle synoptic diagram of the present utility model;

Fig. 5 is the schematic Sunny that cooperates earth operation demonstrator to use,

Referring to Fig. 1, it illustrates the outward appearance direct-view structure of this earth running instrument, it comprises the endosphere 1 that is made of terrestrial globe, be enclosed within terrestrial globe outer and with the outer transparent sheath ball 2 of this terrestrial globe 1 with the centre of sphere, this cover ball is made of colourless hemisphere and the transparent hemisphere of light gray, and two balls can be made relative rotary motion according to the kinematic axis of oneself.Wherein terrestrial globe be used for representing the rotation and the revolution of the earth, and hyaloplasmic sphere press the ecliptic axis coordinate motion interior with equatorial coordinates motion, is used for showing the back of the body day face and sunside of terrestrial globe, thereby synthesizing of single movement resolved in the spatial movement of earth complexity.The ball overlaping structure that is formed by endosphere 1 and ectosphere 2 is connected with control transmission ball seat 12 by support column 19.One and the corresponding solar term dish of pattern shown in Figure 4 are housed on this control transmission ball seat, and it is with said support column concentric and rotation synchronously with it.Have on the ball seat whole earth operation demonstrator is advanced the button 10 of letter control, whole device turns to rubber tire to be supported by several, and this rubber tire moves on track plate circle shown in Figure 4.

Referring to Fig. 2, it is the sectional view of loxocosm of the present utility model.The machinery that it illustrates in greater detail earth operation demonstrator of the present utility model constitutes.Especially clearer showing controlled in the transmission ball seat and the physical construction in the support column 19.As seen from the figure, the motion of the ball overlaping structure of being made up of built-in terrestrial globe 1 and overcoat hyaloplasmic sphere 2 is driven by the driving force of the power machine gear train in control transmission ball seat through the transmission of the multilayer bearing bush support column 19 in.And, also the power of motor is sent to each motion parts by whole gear drive they are moved as required.Specifically, in the embodiment shown in Figure 2, its control gear train comprises the directed drive link 8 of the earth's axis in motor, reduction gearing 15, operation rubber tire 16, the directed idle wheel 17 of the earth's axis, earth's axis oriental toothed gear 18, terrestrial globe rotating gear 4, solar term dish transmission gear 6, movement base plate and the multilayer bearing bush 7.By shown in Figure 2, the power of motor 14 is delivered to reduction gearing 15, rubber tire 16, the directed idle wheel 17 of the earth's axis, earth's axis oriental toothed gear 18 and terrestrial globe respectively from shaft gear 4, solar term dish transmitting gear 6 through gear drive, moving and rubber tire turn so that globe rotation drivingly respectively, earth's axis orientation, solar term are spiraled.Power source among Fig. 2 is dry cell or accumulator, and it is placed in the battery compartment 5 of Fig. 2.

Fig. 3 is the backplan of the control transmission ball seat among Fig. 2.Can another angle from this figure be more clearly visible motor and spread out of power passes to the each several part of this earth operation demonstrator through the transfer motion speed changing gear group relational process.The gear that the power that motor 14 produces is directly put from this motor spreads out of, and delivers to the directed idle wheel of the earth's axis, earth's axis oriental toothed gear and rubber tire step by step through the deceleration of intermediary's reduction gearing.

Fig. 4 is the track circle of the support ball seat of a confession earth operation of the present utility model demonstrator main body cover ball in last operation.It is to be made of rigid metal or nonmetallic materials, and six arcuations that arc angle such as are divided on the structure partly constitute, and width is 170mm.The tooth bar that epirelief is arranged above, the diverse location that leans against inner edge is marked with corresponding solar term title, and the solar term title on the solar term dish that place the ball seat top among these titles and Fig. 2 is corresponding.These six arcuation track plate parts plug-in mounting in use become a circuit orbit, and the section of rack of an epirelief just recessed portion bottom ball seat matches, and makes the whole service instrument that supported by rubber tire move by rule under the guiding of this tooth bar.

Fig. 5 is a Sunny mould shape, signifies a sun, can be coated with redness by light material to constitute, and effect just makes the operation of earth operation demonstrator more directly perceived, and diameter can be placed on track plate central authorities at tens centimetres.After the placement, the height of being propped by support bar should make the centre of sphere of the centre of sphere of its Sunny and terrestrial globe contour.Though it is not it is in the indispensable part of the demonstrator of utility model, mechanically relevant with the ball seat main body.When using the earth of the present utility model to move demonstrator, at first the track plate circle that places on the enough big platform is as shown in Figure 4 being arranged, symbolic Sunny shown in Figure 5 is placed on the central authorities of this track plate circle, then the main body of the utility model running instrument shown in Figure 1 is placed on this track plate circle, the guiding tooth bar of projection is meshed on the groove (gathering sill) that makes the ball seat bottom and this track plate circle.Should note the solar term title of pointer indication and the solar term title on the track plate circle inward flange on the solar term dish of ball seat top, ground are aligned.Energized is utilized the adjusting of button then, controls this demonstrator along the fixed orbital motion of track plate gauge, carries out the demonstration of the public rail of the earth, rotation, thereby the various earth operation phenomenons that are difficult to explain are come into plain view.

The earth operation demonstrator that utilizes structure shown in Fig. 1-3 to form is greatly simplified on drive mechanism, thereby reliability is improved.Can adopt standard component selecting for use on the part, it is greatly convenient to make in the making.

Though the utility model is the introduction of doing with reference to the embodiment shown in Fig. 1-5, but be not limited to the size that provides among the figure, as long as adopt built-in terrestrial globe of the present utility model and the external outer spherical structure that constitutes by colourless hemisphere and painted transparent hemisphere, and adopt the earth movement demonstration instrument of all size of Fig. 2 and mechanical drive mode shown in Figure 3 all should be at category of the present utility model.

Claims (6)

1. an earth moves demonstrator, it comprises a ball overlaping structure, support the support column of this ball overlaping structure and comprise drive controlling gearing tee apparatus within it for one, a symbolic Sunny model that has the track plate circle of evagination guiding tooth bar on it and be placed on these track plate circle central authorities, above this ball seat, also have one to place and the solar term plate that indicates the solar term title of synchronous rotation with it, it is characterized in that with said support column is concentric:

Wherein said ball overlaping structure is by being constituted at an interior One Earth One Family instrument and a transparent concentric spheres that is made of water white transparency and each hemisphere of colored transparent outside, said all can be at interior terrestrial globe and hyaloplasmic sphere outside by oneself rotating shaft with respect to another ball layer turn, and.

Wherein said drive controlling gearing in ball seat includes motor 14, reduction gearing 15, operation rubber tire 16, the directed idle wheel 17 of the earth's axis, earth orientation gear 18, terrestrial globe rotating gear 4, solar term dish gear 6 and the directed drive link 8 of the earth's axis in multilayer bearing bush.

2. as the demonstrator in the claim 1, it is characterized in that wherein said Sunny model is contour by its centre of sphere height of a shore supports and said ball overlaping structure.

3. demonstrator as claimed in claim 1, it is characterized in that wherein said track plate circle partly is made of arc angles such as six, has and the corresponding solar term name of said solar term plate at inward flange, there is the guiding tooth bar of evagination in central authorities, and it is meshed with low groove in ball seat bottom.

4. demonstrator as claimed in claim 1 is characterized in that, wherein built-in terrestrial globe is pressed the equatorial coordinates motion with the kinematic axis of oneself, and outer double-colored hyaloplasmic sphere is pressed the ecliptic axis coordinate motion with the kinematic axis of oneself.

5. demonstrator as claimed in claim 1 is characterized in that, the wherein said hemisphere of colored transparent outside is light grey.

6. demonstrator as claimed in claim 1 is characterized in that: its operation energy is provided by built-in dry cell or battery.

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