CN103218938A - Arch effect demonstration instrument - Google Patents
Arch effect demonstration instrument Download PDFInfo
- Publication number
- CN103218938A CN103218938A CN 201210017377 CN201210017377A CN103218938A CN 103218938 A CN103218938 A CN 103218938A CN 201210017377 CN201210017377 CN 201210017377 CN 201210017377 A CN201210017377 A CN 201210017377A CN 103218938 A CN103218938 A CN 103218938A
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- China
- Prior art keywords
- container
- flat container
- arch
- flat
- demonstration instrument
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Abstract
An arch effect demonstration instrument is characterized by comprising a flat container filled with discrete materials, a pulling plate arranged on the bottom portion of the container, a material receiving box arranged below the pulling plate and a support. An opening is formed in the upper portion of the flat container, a blanking opening is formed in the lower portion of the flat container, and the flat container is provided with at least one transparent side face for observation. The pulling plate is arranged on the outer side of the blanking opening of the flat container to block or open the blanking opening. The arch effect demonstration instrument has the advantages that the flat container is filled with the discrete materials, the pulling plate is lightly pulled outwards, the blanking opening is opened, the discrete materials on the upper portion drop to the material receiving box, and finally an arch is formed above the blanking opening; the container is in a flat body shape, provides a section type demonstration mode, people can directly observe the arch inside the container, and understanding is convenient.
Description
Technical field
The present invention relates to a kind of experimental provision, particularly the arch effect demonstration instrument.
Background technology
For being deposited in discrete materials such as together earth, silt, the effect of mutual extrusion is arranged between each several part, because of it has dual nature mobile and stability concurrently, also has the trend of sliding relatively between prose style free from parallelism each several part, friction force intricate and that can constantly change has also just been arranged between prose style free from parallelism each several part, the transmission of pressure, friction force and when redistributing between a prose style free from parallelism, for the prose style free from parallelism that degree of support is more weak, it is subjected to the effect of a plurality of power: the one, and near a plurality of prose style free from parallelisms hinder the upwards friction force of its downslide; The 2nd, the holding power that a bottom prose style free from parallelism makes progress to it, during as if unsettled formation cavity, bottom, then this power does not exist; The 3rd, the gravity of self; The 4th, a top prose style free from parallelism is to its downward pressure effect.When making a concerted effort of making progress during less than downward making a concerted effort, this prose style free from parallelism will show as " flowing ", equal downward with joint efforts the time when making a concerted effort of making progress, and this prose style free from parallelism will show as " stablizing ".The transmission of relative deformation and power and redistribute phenomenon and be called " arch effect " in this prose style free from parallelism.
Because the arch hole is present in prose style free from parallelism inside, does not have the experimental provision that intuitively presents its arch hole again, understand difficult.
Summary of the invention
The objective of the invention is:, carry a kind of arch effect demonstration instrument that can intuitively present the arch hole of arch for addressing the above problem.
The technical solution adopted in the present invention is: a kind of arch effect demonstration instrument is characterized in that: it by the flat container of filling discrete material, be positioned at container bottom pull plate, be placed on the pulp-collecting box of pull plate below and be configured to; Described flat container upper opening, bottom are provided with blanking port and have at least one for the transparent side surfaces of observing; Described pull plate is positioned at the outside at the blanking port place of described flat container, to cover or to open blanking port.
Described flat container is made by transparent material; Described flat container is placed on the described support, and described support is provided with the concave support platform at the position that is positioned at below the described flat container bottom, is plugged with described pull plate versatilely in the slit between described concave support platform and the flat container bottom.
The invention has the beneficial effects as follows: load a prose style free from parallelism in the flat container, outwards gently draw pull plate, open blanking port, a upper section prose style free from parallelism falls to pulp-collecting box, the inner arch that forms of a final prose style free from parallelism above blanking port; Container is flat body shape, is cross section formula demonstration, can observe directly inner arch, and effect is obvious, is beneficial to understanding.
Description of drawings
Fig. 1 is a cut-open view of the present invention;
Among the figure: 1 flat body container, 2 prose style free from parallelisms, 3 supports, 4 arch holes, 5 blanking ports, 6 concave support platforms, 7 pull plates, 8 support holes, 9 pulp-collecting box.
Embodiment
As shown in Figure 1, transparent flat body container 1 top opening is to load a prose style free from parallelism 2, flat body container 1 below is provided with blanking port 5 and is placed on the support 3, support 3 is provided with concave support platform 6 at the position that is positioned at below flat container 1 bottom, with grafting pull plate 7 in the slit that the bottom of flat container 1 and concave support platform 6 form, can cover or open blanking port 5.The below of pull plate 7 is placed with the pulp-collecting box 9 that collects a prose style free from parallelism.
Claims (2)
1. arch effect demonstration instrument is characterized in that: it by the flat container of filling discrete material, be positioned at container bottom pull plate, be placed on the pulp-collecting box of pull plate below and be configured to; Described flat container upper opening, bottom are provided with blanking port and have at least one for the transparent side surfaces of observing; Described pull plate is positioned at the outside at the blanking port place of described flat container, to cover or to open blanking port.
2. arch effect demonstration instrument as claimed in claim 1 is characterized in that: described flat container is made by transparent material; Described flat container is placed on the described support, and described support is provided with the concave support platform at the position that is positioned at below the described flat container bottom, is plugged with described pull plate versatilely in the slit between described concave support platform and the flat container bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210017377 CN103218938A (en) | 2012-01-19 | 2012-01-19 | Arch effect demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210017377 CN103218938A (en) | 2012-01-19 | 2012-01-19 | Arch effect demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103218938A true CN103218938A (en) | 2013-07-24 |
Family
ID=48816675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210017377 Pending CN103218938A (en) | 2012-01-19 | 2012-01-19 | Arch effect demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103218938A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388774A (en) * | 2015-12-09 | 2016-03-09 | 广州市河东智能科技有限公司 | Smart home background music control system |
-
2012
- 2012-01-19 CN CN 201210017377 patent/CN103218938A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388774A (en) * | 2015-12-09 | 2016-03-09 | 广州市河东智能科技有限公司 | Smart home background music control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130724 |