CN104485041A - Buoyancy test device - Google Patents
Buoyancy test device Download PDFInfo
- Publication number
- CN104485041A CN104485041A CN201510000730.6A CN201510000730A CN104485041A CN 104485041 A CN104485041 A CN 104485041A CN 201510000730 A CN201510000730 A CN 201510000730A CN 104485041 A CN104485041 A CN 104485041A
- Authority
- CN
- China
- Prior art keywords
- balancing weight
- boats
- buoyancy
- liquid
- canoes
- 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.)
- Pending
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Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
- G09B23/12—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of liquids or gases
Abstract
The invention discloses a buoyancy test device and relates to the technical field of teaching aids in the primary school. The buoyancy test device comprises a transparent container full of liquid, wherein a balancing weight and two boats are contained in the transparent container, the balancing weight is in an iron bull shape and sinks in the liquid, and the two boats float on the liquid. Scattering objects are filled in the boats which are connected through a buckle, a dead-load lever is erected in the middle of the boats transversely, and a draw rope connected with the balancing weight is tied to the middle of the dead-load lever. The total weight of the scattering objects in the two boats is larger than the weight of the balancing weight. Compared with the prior art, the scattering objects in the two boats are shoveled out bit by bit, the two boats rise slowly under buoyancy, the balancing weight gradually ascends under driving of the draw rope, and the balancing weight in the iron bull shape sinking in the liquid is fished through buoyancy. Students can obtain visual perceptual knowledge by means of the vivid demonstration, and teaching effect is improved.
Description
Technical field
The present invention relates to primary school teaching teaching aid technical field, especially a kind of experimental provision for demonstrating floating force.
Background technology
Primary school Chinese teaching material has selected " dragging for car pusher " this section of text, and what tell about is the story utilizing buoyancy of water that the car pusher sinking to river bed is salvaged out, reflects the very intelligent of our people.When explaining this section of text, owing to not having buoyancy experiment device to demonstrate, student can not get perceptual knowledge intuitively and is difficult to understand, and teaching efficiency is poor.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of buoyancy experiment device, which solves the test teaching aid not having ocular demonstration buoyancy in existing teaching, causes the problem of teaching efficiency difference.
In order to solve the problem, the technical solution used in the present invention is: this buoyancy experiment device, comprise the transparent vessel that liquid is housed, described transparent vessel built with the car pusher image sunk in described liquid balancing weight and float over two canoes on described liquid, described canoe is built with loose shape thing, being connected by latch closure between two described canoes, two described canoes are equipped with crossbearer prypole in the middle, is the stay cord having and be connected with described balancing weight in the middle part of described prypole.
In above-mentioned buoyancy experiment device technical scheme, technical scheme can also be more specifically: be equipped with spacing ring in the upper end, middle part of described canoe both sides, described prypole is installed in the described spacing ring of two described canoes.
Further, the general assembly (TW) of the loose shape thing on two described canoes is greater than the weight of described balancing weight.
Further, described loose shape thing is handstone or sand.
Owing to have employed technique scheme, the present invention compared with prior art has following beneficial effect:
1, the present invention is by shoveling out piecemeal for the loose shape thing on two canoes, buoyancy makes two canoes slowly rise, the stay cord tied up on prypole drives balancing weight to rise gradually, vivid demonstration utilizes buoyancy to salvage the balancing weight of the car pusher image sunk under liquid, allow student therefrom obtain perceptual knowledge intuitively, improve teaching efficiency; Two canoes are equipped with crossbearer prypole in the middle, are the stay cord having and be connected with balancing weight in the middle part of prypole; Make two canoes stress balance on liquid level, rise steadily.
2, be equipped with spacing ring in the upper end, middle part of canoe both sides, prypole is installed in the spacing ring of two canoes, and prypole dismounting is simple and convenient.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiment, the invention will be further described:
Embodiment 1
A kind of buoyancy experiment device as shown in Figure 1, comprise the transparent vessel 1 that liquid is housed, the liquid of the present embodiment is water, transparent vessel is transparent plastic basin 1, transparent plastic basin 1 is built with the balancing weight 2 of the car pusher image of submerged and natant two canoes 4, canoe 4 is built with loose shape thing 3, and the loose shape thing of the present embodiment is handstone 3, and the general assembly (TW) of the handstone 3 on two canoes 4 is greater than the weight of balancing weight 2; Connected by latch closure 7 between two canoes 4, two canoes 4 are equipped with crossbearer prypole 5 in the middle, in the upper end, middle part of canoe 4 both sides, spacing ring 8 is all housed, prypole 5 is installed in the spacing ring 8 of two canoes 4, is the stay cord 6 having and be connected with balancing weight 2 in the middle part of prypole 5.
The present invention is by shoveling out piecemeal for the handstone 3 on two canoes 4, buoyancy makes two canoes 4 slowly rise, the stay cord 6 tied up on prypole 5 drives balancing weight 2 to rise gradually, vivid demonstration utilizes buoyancy of water to salvage the balancing weight 2 of heavy underwater car pusher image, allow student therefrom obtain perceptual knowledge intuitively, improve teaching efficiency.
Embodiment 2
The difference of the present embodiment and embodiment 1 is: loose shape thing 3 is sand.
All the other technical characteristics are identical with embodiment 1.
Claims (5)
1. a buoyancy experiment device, it is characterized in that: comprise the transparent vessel (1) that liquid is housed, described transparent vessel (1) is built with the balancing weight (2) of the car pusher image sunk in described liquid and two canoes (4) floating on described liquid, described canoe (4) is built with loose shape thing (3), connected by latch closure (7) between two described canoes (4), two described canoes (4) are equipped with crossbearer prypole in the middle (5), and there is the stay cord (6) be connected with described balancing weight (2) in described prypole (5) middle part system.
2. buoyancy experiment device according to claim 1, is characterized in that: be equipped with spacing ring (8) in the upper end, middle part of described canoe (4) both sides, and described prypole (5) is installed in the described spacing ring (8) of two described canoes (4).
3. buoyancy experiment device according to claim 1 and 2, is characterized in that: the general assembly (TW) of the loose shape thing (3) on two described canoes (4) is greater than the weight of described balancing weight (2).
4. buoyancy experiment device according to claim 1 and 2, is characterized in that: described loose shape thing (3) is handstone or sand.
5. buoyancy experiment device according to claim 3, is characterized in that: described loose shape thing (3) is handstone or sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510000730.6A CN104485041A (en) | 2015-01-04 | 2015-01-04 | Buoyancy test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510000730.6A CN104485041A (en) | 2015-01-04 | 2015-01-04 | Buoyancy test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104485041A true CN104485041A (en) | 2015-04-01 |
Family
ID=52759581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510000730.6A Pending CN104485041A (en) | 2015-01-04 | 2015-01-04 | Buoyancy test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104485041A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107527575A (en) * | 2017-08-11 | 2017-12-29 | 杭州双弯月电子科技有限公司 | A kind of water wing billboard |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2472290Y (en) * | 2000-12-21 | 2002-01-16 | 梁平儿 | Byuoyant force demonstration assembly |
| US20050191602A1 (en) * | 2004-03-01 | 2005-09-01 | Lewellen Richard R. | Method and apparatus kit for demonstrating archimedes' principle |
-
2015
- 2015-01-04 CN CN201510000730.6A patent/CN104485041A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2472290Y (en) * | 2000-12-21 | 2002-01-16 | 梁平儿 | Byuoyant force demonstration assembly |
| US20050191602A1 (en) * | 2004-03-01 | 2005-09-01 | Lewellen Richard R. | Method and apparatus kit for demonstrating archimedes' principle |
Non-Patent Citations (2)
| Title |
|---|
| 教育部教学仪器研究所: "《第五届全国自制教具获奖项目汇编》", 31 May 2009, 教育科学出版社 * |
| 郭文忠: ""运用实验解决语文课《捞铁牛》中的难点"", 《实验教学与仪器》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107527575A (en) * | 2017-08-11 | 2017-12-29 | 杭州双弯月电子科技有限公司 | A kind of water wing billboard |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150401 |
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| RJ01 | Rejection of invention patent application after publication |