CN2520544Y

CN2520544Y - Weighted loxocosm

Info

Publication number: CN2520544Y
Application number: CN 02218860
Authority: CN
Inventors: 崔海玉; 马昭恺
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-02-06
Filing date: 2002-02-06
Publication date: 2002-11-13
Anticipated expiration: 2012-02-06

Abstract

The utility model discloses a heavy hammer type loxocosm, which comprises a frame. A central shaft arranged transversely is fixed on the frame, and a turn-plate is sleeved on the central shaft. A heliometer is fixed on the end of the central shaft, and an earth night cover frame and a globe frame are fixed on the turn-plate. The support shaft of the globe is inserted on the turn-plate, and a weight is hung on the support shaft. An earth rotation shaft is arranged on the globe frame. The globe can demonstrate the change of noon sun height, the generation of time equation and the formation of sidereal day and solar day, and directly observe the latitude distribution of noon sun height and season change and the like. The demonstrated effect is clear, and the demonstrated accuracy is high.

Description

The Weight type loxocosm

Technical field

The utility model relates to a kind of geographical teaching instrument, specifically is a kind of loxocosm.

Background technology

The rotation of the earth and revolution caused variations of length round the clock, the four seasons formations, sunlight point of vertical situation of movement, five spontaneous phenomenons of being with such as division no matter in geographical teaching still is Popular Science Education, all are difficult to language, wall chart, generally teaching aid is told about clear.At present, " loxocosm " of comparative maturity is broadly divided into three classes on the market, i.e. illumination type, double spherical, morning and evening the circle type, though they can reach many demo functions, ubiquity some problems." illumination type loxocosm " utilizes light to come simulated solar irradiation, method with the light radiography shows the operating chronometer phenomenon of the earth, owing to depend on the light radiography, it is unclear to cause terminator to show easily, can not carry out teaching explanation, more can not demonstrate out the variation of solar noon sun height, the formation on lamp and sidereal day and solar day etc., but also to be subjected to the restriction of power supply." circle type loxocosm in morning and evening " demonstrates phenomenon round the clock owing to adopt enclose morning and evening, so can not image clearly demonstrate out light and shade phenomenon round the clock, this instrument is to utilize belt to make gearing simultaneously, and error ratio is bigger, and the teacher uses very inconvenient." double spherical loxocosm " utilizes the spheroid of light and shade round the clock, interior cover One Earth One Family instrument, show the operating chronometer phenomenon of the earth whereby, though without power supply, but owing to utilize outer ball cover terrestrial globe technically, some critical pieces must be enclosed within the ball, thereby limited the amplification of this instrument, the visibility of instrument is affected, and must separate with base educating body again during the demonstration of this instrument, could clearly show, can not correctly demonstrate the variation of solar noon sun height simultaneously, can not demonstrate the formation on sidereal day and solar day, and the time difference and reckoning chronometer phenomenon.

Summary of the invention

The utility model purpose is: a kind of hand propelled loxocosm is provided, this running instrument can be demonstrated variation, the generation of the time difference and the formation on sidereal day and solar day of solar noon sun height, can observe the Latitude Distribution of solar noon sun height, the conversion in season etc., the demonstration effect is clear, demonstrating precision is high visual pattern.

The technical solution of the utility model is: a kind of Weight type loxocosm, this running instrument comprises support, be fixed with horizontal central shaft on the support, be arranged with rotating disk on the central shaft, the termination of central shaft is fixed with solar attachment, be fixed with earth curtain of night cover stent and globe bracket on the rotating disk, be fixed with earth curtain of night cover on the earth curtain of night cover stent, the support shaft of globe bracket is plugged on the rotating disk, be linked with weight on the support shaft, globe bracket is provided with earth's axis, is fixed with terrestrial globe on the earth's axis.

The further technical scheme of the utility model is: a kind of Weight type loxocosm, this running instrument comprises support, be fixed with horizontal central shaft on the support, be arranged with rotating disk on the central shaft, the termination of central shaft is fixed with solar attachment, be fixed with earth curtain of night cover stent and globe bracket on the rotating disk, be fixed with earth curtain of night cover on the earth curtain of night cover stent, the support shaft of globe bracket is plugged on the rotating disk, be linked with weight on the support shaft, globe bracket is provided with earth's axis, is fixed with terrestrial globe on the earth's axis; Be provided with follower gear by bearing holder (housing, cover) on the described central shaft, follower gear is fixed on the center of rotating disk, also is provided with fixed head on the central shaft, and fixed head is provided with motor, and the output shaft of motor is provided with driving gear, and driving gear and follower gear engagement make dial rotation; Be fixed with belt pulley on described support shaft and the earth's axis respectively, two belt pulleys are by band transmission synchronously, during dial rotation, support shaft is owing to the effect of weight produces relative rotation, both made globe bracket and earth's axis keep original direction constant all the time, and also made the earth's axis rotation and make terrestrial globe produce rotation.

The more detailed technical scheme of the utility model is: a kind of Weight type loxocosm, this running instrument comprises support, be fixed with horizontal central shaft on the support, be arranged with rotating disk on the central shaft, the termination of central shaft is fixed with solar attachment, be fixed with earth curtain of night cover stent and globe bracket on the rotating disk, be fixed with earth curtain of night cover on the earth curtain of night cover stent, the support shaft of globe bracket is plugged on the rotating disk, be linked with weight on the support shaft, globe bracket is provided with earth's axis, is fixed with terrestrial globe on the earth's axis; Be provided with follower gear by bearing holder (housing, cover) on the described central shaft, follower gear is fixed on the center of rotating disk, also is provided with fixed head on the central shaft, and fixed head is provided with motor, and the output shaft of motor is provided with driving gear, and driving gear and follower gear engagement make dial rotation; Be fixed with belt pulley on described support shaft and the earth's axis respectively, two belt pulleys are by band transmission synchronously, during dial rotation, support shaft is owing to the effect of weight produces relative rotation, both made globe bracket and earth's axis keep original direction constant all the time, and also made the earth's axis rotation and make terrestrial globe produce rotation; Be fixed with the sun direct projection indicator stem that points on the terrestrial globe on the described rotating disk; Be fixed with the solar term dish on the described central shaft, be fixed with the solar term indicator stem that points to the solar term dish on the rotating disk; The angle on described earth's axis and earth 's orbit plane be 66 ° 34 '.

The utility model has the advantages that:

1. rotating disk of the present utility model by driving gear and follower gear driven rotary, is demonstrated the situation that the earth revolves around the sun by motor, and globe bracket and earth's axis keep original direction constant all the time under the effect of weight simultaneously.

2. rotating disk of the present utility model is when rotating, globe bracket and earth's axis are owing to the effect of weight keeps original direction constant all the time, support shaft is produced relative rotation, make terrestrial globe produce rotation thereby drive earth's axis, the situation of demonstration earth rotation.

3. the utility model also is provided with sun direct projection indicator stem, solar term dish and the solar term indicator stem that points to the earth, can observe the Latitude Distribution of solar noon sun height, the conversion in season etc. visual pattern, and the demonstration effect is clear, demonstrating precision is high.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further described:

Fig. 1 is a structural representation of the present utility model;

Wherein: 1 support; 2 central shafts; 3 rotating disks; 4 solar attachments; 5 earth curtain of night cover stents; 6 globe brackets; 7 earth curtain of night covers; 8 support shafts; 9 weights; 10 earth's axiss; 11 terrestrial globes; 12 bearings; 13 follower gears; 14 fixed heads; 15 motors; 16 driving gears; 17 belt pulleys; 18 belt pulleys; 20 are with synchronously; 21 sun direct projection indicator stems; 22 solar term dishes; 23 solar term indicator stems.

Embodiment

Embodiment: as shown in Figure 1, a kind of Weight type loxocosm, this running instrument comprises support [1], be fixed with horizontal central shaft [2] on the support [1], be arranged with rotating disk [3] on the central shaft [2], the termination of central shaft [3] is fixed with solar attachment [4], be fixed with earth curtain of night cover stent [5] and globe bracket [6] on the rotating disk [3], be fixed with earth curtain of night cover [7] on the earth curtain of night cover stent [5], the support shaft [8] of globe bracket [6] is plugged on the rotating disk [3], be linked with weight [9] on the support shaft [8], globe bracket [6] is provided with earth's axis [10], is fixed with terrestrial globe [11] on the earth's axis [10]; Described central shaft [2] is gone up and is arranged with follower gear [13] by bearing [12], follower gear [13] is fixed on the center of rotating disk [3], also be provided with fixed head [14] on the central shaft [2], fixed head [14] is provided with motor [15], the output shaft of motor [15] is provided with driving gear [16], and driving gear [16] rotates rotating disk [3] with follower gear [13] engagement; Be fixed with belt pulley [17] and [18] respectively on described support shaft [8] and the earth's axis [10], two belt pulleys [17] and [18] are by band [20] transmission synchronously, when rotating disk [3] rotates, support shaft [8] is owing to the effect of weight [9] produces relative rotation, both made globe bracket [6] and earth's axis [10] keep original direction constant all the time, and also made earth's axis [10] rotation and make terrestrial globe [11] produce rotation; Be fixed with the sun direct projection indicator stem [21] that points on the terrestrial globe [11] on the described rotating disk [3]; Be fixed with solar term dish [22] on the described central shaft [2], be fixed with the solar term indicator stem [23] that points to solar term dishes [22] on the rotating disk [3]; The angle on described earth's axis [10] and earth 's orbit plane be 66 ° 34 '.

Rotating disk of the present utility model [3] passes through driving gear [16] and follower gear [13] driven rotary by motor [15], the situation that the demonstration earth revolves around the sun, globe bracket [6] and earth's axis [10] keep original direction constant all the time under the effect of weight [9] simultaneously; Rotating disk of the present utility model [3] is when rotating, globe bracket [6] and earth's axis [10] are owing to the effect of weight [9] keeps original direction constant all the time, support shaft [8] is produced relative rotation, make terrestrial globe [11] produce rotation thereby drive earth's axis [10], the situation of demonstration earth rotation; The utility model also is provided with sun direct projection indicator stem [21], solar term dish [22] and the solar term indicator stem [23] that points to terrestrial globe [11], can observe the Latitude Distribution of solar noon sun height, the conversion in season etc., the demonstration effect is clear, demonstrating precision is high visual pattern.

Claims

1. Weight type loxocosm, it is characterized in that: this running instrument comprises support [1], be fixed with horizontal central shaft [2] on the support [1], be arranged with rotating disk [3] on the central shaft [2], the termination of central shaft [3] is fixed with solar attachment [4], be fixed with earth curtain of night cover stent [5] and globe bracket [6] on the rotating disk [3], be fixed with earth curtain of night cover [7] on the earth curtain of night cover stent [5], the support shaft [8] of globe bracket [6] is plugged on the rotating disk [3], be linked with weight [9] on the support shaft [8], globe bracket [6] is provided with earth's axis [10], is fixed with terrestrial globe [11] on the earth's axis [10].

2. Weight type loxocosm according to claim 1, it is characterized in that: described central shaft [2] is gone up and is arranged with follower gear [13] by bearing [12], follower gear [13] is fixed on the center of rotating disk [3], also be provided with fixed head [14] on the central shaft [2], fixed head [14] is provided with motor [15], the output shaft of motor [15] is provided with driving gear [16], and driving gear [16] rotates rotating disk [3] with follower gear [13] engagement.

3. Weight type loxocosm according to claim 1, it is characterized in that: be fixed with belt pulley [17] and [18] respectively on described support shaft [8] and the earth's axis [10], two belt pulleys [17] and [18] are by band [20] transmission synchronously, when rotating disk [3] rotates, support shaft [8] is owing to the effect of weight [9] produces relative rotation, both made globe bracket [6] and earth's axis [10] keep original direction constant all the time, and also made earth's axis [10] rotation and make terrestrial globe [11] produce rotation.

4. Weight type loxocosm according to claim 1 is characterized in that: be fixed with the sun direct projection indicator stem [21] that points on the terrestrial globe [11] on the described rotating disk [3].

5. Weight type loxocosm according to claim 1 is characterized in that: be fixed with solar term dish [22] on the described central shaft [2], be fixed with the solar term indicator stem [23] that points to solar term dishes [22] on the rotating disk [3].

6. Weight type loxocosm according to claim 1 is characterized in that: the angle on described earth's axis [10] and earth 's orbit plane be 66 ° 34 '.