CN204166754U - Object is overweight, weightlessness phenomenon demonstration instrument - Google Patents
Object is overweight, weightlessness phenomenon demonstration instrument Download PDFInfo
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- CN204166754U CN204166754U CN201420675175.8U CN201420675175U CN204166754U CN 204166754 U CN204166754 U CN 204166754U CN 201420675175 U CN201420675175 U CN 201420675175U CN 204166754 U CN204166754 U CN 204166754U
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- direct current
- current generator
- square frame
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Abstract
The utility model relates to a kind of overweight, weightlessness phenomenon demonstration instrument, belongs to physics teaching demonstrating instrument device field.Feature of the present utility model is: four panels up and down of instrument four sides square frame are mutually vertical respectively, four panels up and down of two rectangular frames in little four sides are mutually vertical respectively, counterweight is placed on electronic scales, two electronic scaless are separately fixed on the lower panel of the rectangular frame in little four sides, be connected by three pulley ropes between two rectangular frames in little four sides and direct current generator, direct current generator nominal voltage is the direct current generator of 220V, changes the rotation direction of direct current generator with voltage polarity reversing switch.The advantage that the utility model has and good effect are: can demonstrate overweight, the weightlessness of object upwards, when moving downward, structure is simple, and intuitively accurately, operation demonstration is convenient.
Description
Technical field
The utility model relates to that a kind of object is overweight, weightlessness phenomenon demonstration instrument, belongs to physics teaching demonstrating instrument device field.
Background technology
At present, in physics teaching, student can not profound understanding to overweight, the weightlessness of object, traditional overweight, weightless demonstration device accurately can not demonstrate overweight, weightlessness and data, and intuitive is not good, this demonstration instrument accurately, intuitively, dynamically can demonstrate overweight, weightlessness and data to student.
Utility model content
The purpose of this utility model is to provide that a kind of object is overweight, weightlessness phenomenon demonstration instrument, accurately, intuitively, dynamically can demonstrate overweight, weightlessness and the data of object.
The purpose of this utility model is achieved in that by 220V direct supply, power switch, 220V DC motor speed-regulating device, polarity of voltage switch, direct current generator, instrument four sides square frame, pulley mount, control panel, pulley, rope, the rectangular frame in little four sides, counterweight, electronic scales, base plate pin, globule horizontal glass bubble composition, power switch, 220V DC motor speed-regulating device, polarity of voltage switch and direct current generator are connected on the output terminal of 220V direct supply after connecting, power switch, 220V DC motor speed-regulating device, polarity of voltage switch is fixing on the control panel, control panel is vertically connected with the top panel of instrument four sides square frame, about instrument upper part, two pulleys are fixed on the lower surface of the top panel of instrument four sides square frame by pulley mount, instrument lower part left side pulley is fixed on the upper surface of the lower panel of instrument four sides square frame by pulley mount, globule horizontal glass bubble is placed on the upper surface of the lower panel of instrument four sides square frame, the below of the lower panel of instrument four sides square frame is fixed with base plate pin, it is characterized in that: four panels up and down of instrument four sides square frame are mutually vertical respectively, four panels up and down of two rectangular frames in little four sides are mutually vertical respectively, counterweight is placed on electronic scales, two electronic scaless are separately fixed on the lower panel of the rectangular frame in little four sides, be connected by three pulley ropes between two rectangular frames in little four sides and direct current generator, direct current generator nominal voltage is the direct current generator of 220V, the rotation direction of direct current generator is changed with voltage polarity reversing switch.
Owing to adopting technique scheme, the advantage that the utility model has and good effect are: can demonstrate overweight, the weightlessness of object upwards, when moving downward, structure is simple, and intuitively accurately, operation demonstration is convenient.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is circuit theory diagrams of the present utility model.
Fig. 2 is one-piece construction schematic diagram of the present utility model.
A.220V direct supply K in Fig. 1
1. power switch is DC motor speed-regulating device K B.220V
2. polarity of voltage switch M. direct current generator
1. instrument four sides square frame 2. pulley mount 3. power switch K in Fig. 2
14.220V DC motor speed-regulating device B 5. polarity of voltage switch K
26. the little four sides of control panel 7. pulley 8. rope 9. rectangular frame 10. counterweight 11. electronic scales 12. direct current generator M 13. base plate pin 14. globule horizontal glass bubble
Embodiment:
In FIG, power switch (K
1), 220V DC motor speed-regulating device (B), polarity of voltage switch (K
2) and direct current generator (M) series connection after be connected on the output terminal of 220V direct supply (A).
In fig. 2, by the power switch in Fig. 1, 220V DC motor speed-regulating device, polarity of voltage switch is fixed on control panel (6), control panel (6) is vertically connected with the upper surface of the top panel of instrument four sides square frame (1), about instrument upper part, two pulleys (7) are fixed on the lower surface of the top panel of instrument four sides square frame (1) respectively by two pulley mount (2), instrument lower part left side pulley (7) is fixed on the upper surface of the lower panel of instrument four sides square frame (1) by pulley mount (2), globule horizontal glass bubble (14) is placed on the upper surface of the lower panel of instrument four sides square frame (1), the below of the lower panel of instrument four sides square frame (1) is fixed with base plate pin (13), be connected with rope (8) by three pulleys (7) between the upper and lower panel of two the rectangular frame in little four sides (9) and direct current generator M (12), four panels up and down of instrument four sides square frame (1) are mutually vertical respectively, four panels up and down of two the rectangular frame in little four sides (9) are mutually vertical respectively, counterweight (10) is placed on electronic scales (11), two electronic scaless (11) are separately fixed on the lower panel at the rectangular frame in little four sides (9).Direct current generator M (12) is the direct current generator of 220V with nominal voltage, with voltage polarity reversing switch K
2(5) rotation direction of direct current generator is changed.
Claims (1)
1. overweight, a weightlessness phenomenon demonstration instrument, power switch (K
1), 220V DC motor speed-regulating device (B), polarity of voltage switch (K
2) and direct current generator (M) series connection after be connected on the output terminal of 220V direct supply (A), by power switch, 220V DC motor speed-regulating device, polarity of voltage switch is fixed on control panel (6), control panel (6) is vertically connected with the upper surface of the top panel of instrument four sides square frame (1), about instrument upper part, two pulleys (7) are fixed on the lower surface of the top panel of instrument four sides square frame (1) respectively by two pulley mount (2), instrument lower part left side pulley (7) is fixed on the upper surface of the lower panel of instrument four sides square frame (1) by pulley mount (2), globule horizontal glass bubble (14) is placed on the upper surface of the lower panel of instrument four sides square frame (1), the below of the lower panel of instrument four sides square frame (1) is fixed with base plate pin (13), be connected with rope (8) by three pulleys (7) between the upper and lower panel of two the rectangular frame in little four sides (9) and direct current generator (M), four panels up and down of instrument four sides square frame (1) are mutually vertical respectively, four panels up and down of two the rectangular frame in little four sides (9) are mutually vertical respectively, counterweight (10) is placed on electronic scales (11), two electronic scaless (11) are separately fixed on the lower panel at the rectangular frame in little four sides (9), direct current generator (M) is the direct current generator of 220V with nominal voltage, with voltage polarity switch (K
2) change the rotation direction of direct current generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420675175.8U CN204166754U (en) | 2014-10-29 | 2014-10-29 | Object is overweight, weightlessness phenomenon demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420675175.8U CN204166754U (en) | 2014-10-29 | 2014-10-29 | Object is overweight, weightlessness phenomenon demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204166754U true CN204166754U (en) | 2015-02-18 |
Family
ID=52540420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420675175.8U Expired - Fee Related CN204166754U (en) | 2014-10-29 | 2014-10-29 | Object is overweight, weightlessness phenomenon demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204166754U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104376761A (en) * | 2014-10-29 | 2015-02-25 | 盐城工业职业技术学院 | Object overweight and weightlessness demonstrator |
-
2014
- 2014-10-29 CN CN201420675175.8U patent/CN204166754U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104376761A (en) * | 2014-10-29 | 2015-02-25 | 盐城工业职业技术学院 | Object overweight and weightlessness demonstrator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150218 Termination date: 20161029 |