CN2493995Y - Float force demonstration instrument - Google Patents
Float force demonstration instrument Download PDFInfo
- Publication number
- CN2493995Y CN2493995Y CN 01249890 CN01249890U CN2493995Y CN 2493995 Y CN2493995 Y CN 2493995Y CN 01249890 CN01249890 CN 01249890 CN 01249890 U CN01249890 U CN 01249890U CN 2493995 Y CN2493995 Y CN 2493995Y
- Authority
- CN
- China
- Prior art keywords
- cross bar
- demonstration instrument
- vertical rod
- crossbeam
- fixed pulley
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Springs (AREA)
Abstract
A flotage demonstration instrument comprises a T-shape bracket with a base platform which comprises a vertical bar and a beam, a cross bar with through-holes on the two ends of the cross bar is arranged horizontally on the vertical bar under the beam. Fixed pulleys are arranged on both ends of the beam separately, a spring balance is hanged under the beam through a rope, and the rope goes through the through-hole arranged on the beam, bypasses the fixed pulley and is combined with a locating pin on the lower end of the vertical bar. Due to adopting the structure, the verification of Archimedean principle is proved very visually, promoting students to understand Archimedean principle, and the flotage variation in the sinking process is reflected very visually.
Description
The utility model relates to a kind of instruments used for education, relates to a kind of buoyancy demonstration instrument specifically.
Adopt of the buoyancy demonstration instrument that is used for physics teaching at present hung a weight in the lower end that a cylindrical spring claims more, weigh up this weight of heavy, the weight that to hang places the spilling water cup then, this weight of heavy reduction is suffered buoyancy, weigh up the weight of drainage water in the spilling water cup then, to prove the correct of Archimedes principle.Though above-mentioned employing cylindrical spring claims to demonstrate the correctness of the provable Archimedes principle of process of buoyancy, the demonstration operation steps is more loaded down with trivial details, and intuitive is relatively poor.
The purpose of this utility model provides a kind of buoyancy demonstration instrument with regard to being at above-mentioned existing in prior technology deficiency.
The purpose of this utility model can realize by following technical measures:
The utility model comprise have base platform, by the T shape support that vertical rod and crossbeam are formed, in described vertical rod, be positioned at described crossbeam lower horizontal and be provided with the cross bar that both ends have through hole; Be respectively arranged with fixed pulley at described crossbeam two ends, be hung with a spring balance by lead below being positioned at described cross bar, described lead passes to be walked around described fixed pulley behind the through hole that is arranged on the cross bar and combines with the register pin that is arranged on the vertical rod lower end.
Described spring balance is by an index dial, and with the extension spring with identical coefficient of stiffiness that is symmetricly set on these index dial center line both sides, and the pointer that is separately positioned on described extension spring lower end is formed.
Advantage of the present utility model just is to be provided with one and has T shape support base platform, that be made up of vertical rod and crossbeam and be positioned at described crossbeam lower horizontal in described vertical rod and be provided with the cross bar that both ends have through hole; When needs demonstration buoyancy, at first the spilling water cup being placed is positioned under arbitrary extension spring on the described base platform, weight is hung in this extension spring, simultaneously a water cup is hung in another extension spring, adjustment is arranged on pointer in two extension springs on the identical graduation line, slowly loosen described lead then, described index dial is moved down cause the weight of being demonstrated to immerse in the water, water in the spilling water cup imports in the water cup from run-down pipe simultaneously, can be observed the number of division that pointer moved in two extension springs this moment equates, thereby not only proved the correctness of Archimedes principle very intuitively, promoted the understanding of student, also reflected the variation of object suffered buoyancy in the sinking process simultaneously intuitively Archimedes principle.
The drawing of accompanying drawing is described as follows:
Fig. 1 is a front view of the present utility model.
The utility model describes in further detail below in conjunction with specific embodiment (accompanying drawing):
As shown in the figure, the utility model comprise have base platform 1, by the T shape support that vertical rod 2 and crossbeam 3 are formed, in described vertical rod 2, be positioned at described crossbeam 3 lower horizontal and be provided with the cross bar 5 that both ends have through hole 4; Be respectively arranged with fixed pulley 6 at described crossbeam 3 two ends, below being positioned at described cross bar 5, be hung with a spring balance by lead 7, described spring balance is by an index dial 8, with the extension spring with identical coefficient of stiffiness 9 that is symmetricly set on these index dial 8 center line both sides, and pointer 10 compositions that are separately positioned on described extension spring 9 lower ends.Described lead 7 passes to be walked around described fixed pulley 6 behind the through hole 4 that is arranged on the cross bar 5 and combines with the register pin that is arranged on vertical rod 2 lower ends.
Claims (2)
1, a kind of buoyancy demonstration instrument, it is characterized in that: it comprise have base platform (1), by the T shape support that vertical rod (2) and crossbeam (3) are formed, in described vertical rod (2), be positioned at described crossbeam (3) lower horizontal and be provided with the cross bar (5) that both ends have through hole (4); Be respectively arranged with fixed pulley (6) at described crossbeam (8) two ends, be hung with a spring balance by lead (7) being positioned at described cross bar (5) below, described lead (7) passes to be walked around described fixed pulley (6) behind the through hole (4) that is arranged on the cross bar (5) and combines with the register pin that is arranged on vertical rod (2) lower end.
2, buoyancy demonstration instrument according to claim 1, it is characterized in that: described spring balance is by an index dial (8), with the extension spring with identical coefficient of stiffiness (9) that is symmetricly set on this index dial (8) center line both sides, and pointer (10) composition that is separately positioned on described extension spring (9) lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01249890 CN2493995Y (en) | 2001-06-19 | 2001-06-19 | Float force demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01249890 CN2493995Y (en) | 2001-06-19 | 2001-06-19 | Float force demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2493995Y true CN2493995Y (en) | 2002-05-29 |
Family
ID=33660163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01249890 Expired - Fee Related CN2493995Y (en) | 2001-06-19 | 2001-06-19 | Float force demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2493995Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102456286A (en) * | 2010-10-28 | 2012-05-16 | 秋译庆 | Simultaneous buoyancy comparing and demonstrating device for two heavy objects |
| CN106057034A (en) * | 2016-08-25 | 2016-10-26 | 董亚伦 | Buoyancy teaching demonstration structure |
| CN112304399A (en) * | 2020-11-04 | 2021-02-02 | 西京学院 | Buoyancy weight-measuring scale and weighing method thereof |
-
2001
- 2001-06-19 CN CN 01249890 patent/CN2493995Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102456286A (en) * | 2010-10-28 | 2012-05-16 | 秋译庆 | Simultaneous buoyancy comparing and demonstrating device for two heavy objects |
| CN106057034A (en) * | 2016-08-25 | 2016-10-26 | 董亚伦 | Buoyancy teaching demonstration structure |
| CN106057034B (en) * | 2016-08-25 | 2019-06-14 | 南京牧信科技有限公司 | Buoyancy teaching demonstration structure |
| CN112304399A (en) * | 2020-11-04 | 2021-02-02 | 西京学院 | Buoyancy weight-measuring scale and weighing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2493995Y (en) | Float force demonstration instrument | |
| CN203786965U (en) | Multifunctional physics experiment apparatus | |
| CN202332003U (en) | Experimental instrument for parallelogram law of forces in physical teaching | |
| CN203591026U (en) | Liftable platform | |
| CN2859702Y (en) | Archimedes principle demonstrator | |
| CN2837963Y (en) | Archimedes' law demonstrator | |
| CN200965741Y (en) | Force synthetic demonstrating instrument | |
| CN204516180U (en) | A kind of Buoyancy demonstration instrument | |
| CN2520537Y (en) | Lever principle teaching experimental apparatus | |
| CN2404111Y (en) | Magnetic measuring balance | |
| CN2681259Y (en) | Instrument for demonstrating overweight and weightlessness | |
| CN2466632Y (en) | Sample hanger for corrosion simulation test device | |
| CN2771953Y (en) | Experimental instrument for demonstrating magnetic strength | |
| CN214847349U (en) | Multifunctional lever teaching aid | |
| CN215577247U (en) | Visual demonstration device for overweight and weightlessness phenomena | |
| CN2449311Y (en) | Archimedes principle demonstrator | |
| CN200972445Y (en) | Density balance | |
| CN2904166Y (en) | Experiment apparatus for force parallelogram rule | |
| CN205920659U (en) | Appearance is demonstrated to even speed for physical teaching | |
| CN212460923U (en) | Buoyancy comprehensive experiment instrument | |
| CN87207716U (en) | Moveable mark spring scale | |
| CN2468114Y (en) | Chromosome variation demonstration modle during cell division | |
| CN212181742U (en) | Novel mount for physical teaching experiments | |
| CN201622736U (en) | Hydraulic transfer demonstrator | |
| CN2704075Y (en) | Lever balance demonstrating teaching aid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |