CN203733380U - Double cone upper-rolling experimental platform - Google Patents
Double cone upper-rolling experimental platform Download PDFInfo
- Publication number
- CN203733380U CN203733380U CN201420009226.3U CN201420009226U CN203733380U CN 203733380 U CN203733380 U CN 203733380U CN 201420009226 U CN201420009226 U CN 201420009226U CN 203733380 U CN203733380 U CN 203733380U
- Authority
- CN
- China
- Prior art keywords
- double cone
- cone body
- supports
- support
- marking plate
- 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
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
A double cone upper-rolling experimental platform comprises two left supports and two right supports, an interval between the left supports is different from an interval between the right supports, and the left supports are symmetrically disposed according to the center of the interval distance, so do the right supports; the supports are stable after cross bars at the bottom of the supports are connected; a slide rail is connected between each of the left supports and the corresponding right support at the near side, and the height of each slide rail at the side of the supports with a smaller interval distance is lower than the height of the slide rail at the side of the supports with a larger interval distance; a double cone with two heads pointed rolls on the slide rails; the pointed portions of the double cone are limited by limiting frames disposed at two back-forth sides of the platform, so that a rolling distance is limited; each limiting frame is provided with a marking plate, and each marking plate is provided with a horizontal reference line; and the pointed portions of the double cone are provided with marking pens, and the marking pens can leave path lines on the marking plates when the double cone rolls. The path lines can be compared with the horizontal reference lines, the decreasing process of the center of gravity can be presented, and the experimental principle can be explained.
Description
Technical field
The present invention relates to Physical Experiment field, relate in particular on a kind of double cone body and roll experiment porch.
Background technology
Double cone up rolling experimental demonstration one seem and violate the phenomenon of rule: only under the effect of gravity field, (ignore air resistance), double cone body can scroll up along inclined guide rails.Principle is to meet under certain geometric condition, the center-of-mass coordinate of double cone body is always ahead of the point of contact coordinate of double cone face and guide rail on rotating direction, cause the gravity of double cone body to produce moment and this moment having played the effect of kinetic moment, thereby double cone body is rolled on guide rail. explaining this process from the angle of energy conversion, is the rotational kinetic energy of doing gravitional force that positive work causes double cone body and be converted to double cone body due to gravitational torque
On existing double cone body, roll experiment porch, comprise each two interval differences around, and the support of placing with the Central Symmetry of spacing distance, support is firm after being connected by the cross bar of bottom, each connection one slide rail between the support of the close side in left and right of support, and described slide rail will be lower than large support one side of spacing distance at the height of little support one side of spacing distance; A biapiculate double cone body rolls on described slide rail, in experiment, because the direction that is inclined upwardly of slide rail is identical with the rotating direction of double cone body, produce the visual imagery that double cone body scrolls up, but owing to lacking reference marker, student cannot well observe the process that the double cone body weight heart declines, and therefore this seems and violates phenomenon of rule and can not well be explained: gravitational torque is done gravitional force that positive work causes double cone body and be converted to such the principles of science of rotational kinetic energy of double cone body.
Utility model content
The utility model, in order to solve prior art problem, designs on a kind of double cone body and rolls experiment porch.
The technical solution of the utility model is: on a kind of double cone body, roll experiment porch, comprise each two interval differences around, and the support of placing with the Central Symmetry of spacing distance, support is firm after being connected by the cross bar of bottom, each connection one slide rail between the support of the close side in left and right of support, and slide rail will be lower than large support one side of spacing distance at the height of little support one side of spacing distance; A biapiculate double cone body rolls on slide rail, and the pointed nose of the limitting casing that before and after platform, both sides arrange constraint double cone body, thereby limits rolling distance, and limitting casing has marking plate, and marking plate has horizontal reference line; The pointed nose of double cone body has marker pen, and marker pen can leave trajectory in the time that double cone body rolls on marking plate.
Preferred as one, marking plate is magnetic plate, and described marker pen is magnetic pen; In the time that double cone body rolls, magnetic pen leaves trajectory with cordless on magnetic plate, and compares with described reference line.
Preferred as one, marking plate is transparent material, and described reference line is marked at non-marked face.
Preferred as one, an end points of reference line and described double cone body are in roll initial or the measuring point position of final position tense marker pen on marking plate is consistent.
In sum, the beneficial effects of the utility model are:
1, the marking plate of limitting casing and limitting casing coordinates the pointed nose that is arranged on double cone body to have marker pen, make marker pen can on marking plate, leave trajectory in the time that double cone body rolls, this trajectory energy and horizontal reference line contrast, show the process that center of gravity declines, explain and seem the experimental phenomena of violating rule.
2, the application of magnetic plate and magnetic pen, can reduce the resistance to rolling of double cone body, roll more smooth, and trajectory Convenient scrubber on magnetic plate removes, and is convenient to repeatedly test.
Brief description of the drawings
Fig. 1 is experimentation schematic diagram of the present utility model;
Fig. 2 is plan structure schematic diagram of the present utility model;
Embodiment
As shown in Figure 2: on a kind of double cone body, roll experiment porch, left side is support 11 and 12, and right side is support 13 and 14, the spacer support frame difference of the left and right sides, and place with the Central Symmetry of spacing distance.Support is connected rear firm by the cross bar 2 of bottom, each slide rail that connects between the support of the close side in left and right of support, it is support 11 and 13, between support 12 and 14, respectively there is a slide rail, be respectively 41 and 42, the limitting casing 3 that before and after platform, both sides arrange retrains the pointed nose of double cone body 1, thereby limits rolling distance, limitting casing 3 has marking plate 5, and the pointed nose of double cone body has marker pen 6.
As shown in Figure 1: slide rail will be lower than large support one side of spacing distance at the height of little support one side of spacing distance; A biapiculate double cone body 1 rolls on slide rail, and marking plate 5 has horizontal reference line AO; Marker pen 6, in the time that double cone body rolls, can leave trajectory BO in the time being rolled to final position 10 on marking plate.For the ease of observing, an end points of reference line and double cone body are in the initial of rolling or the measuring point position of final position tense marker pen on marking plate is consistent.In this embodiment taking the position of terminal as common end points.
From the contrast of trajectory BO and horizontal reference line AO, can obviously observe out the process that the double cone body weight heart declines, two lines specific energy is well explained: gravitational torque is done gravitional force that positive work causes double cone body and be converted to such the principles of science of rotational kinetic energy of double cone body.
In embodiment, marking plate is magnetic plate, and marker pen is magnetic pen; In the time that double cone body rolls, magnetic pen leaves trajectory with cordless on magnetic plate, and compares with described reference line.If reduce cost of manufacture, other pens that can write all can use.In addition marking plate can be to be also transparent material, and reference line is marked at non-marked face.Like this observation convenient, and avoided trajectory describe and wipe have influence on reference line.
More than show and described ultimate principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and instructions, describes just illustrates principle of the present utility model; under the prerequisite that does not depart from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. on a double cone body, roll experiment porch, comprise each two interval differences around, and the support of placing with the Central Symmetry of spacing distance, described support is firm after being connected by the cross bar of bottom, each connection one slide rail between the support of the close side in left and right of described support, and described slide rail will be lower than large support one side of spacing distance at the height of little support one side of spacing distance; A biapiculate double cone body rolls on described slide rail, it is characterized in that: before and after platform, both sides are provided with limitting casing, for retraining the pointed nose of described double cone body, thereby limits rolling distance; Described limitting casing has marking plate, and described marking plate has horizontal reference line; The pointed nose of described double cone body has marker pen, and described marker pen can leave trajectory in the time that double cone body rolls on marking plate.
2. on double cone body according to claim 1, roll experiment porch, it is characterized in that: described marking plate is magnetic plate, and described marker pen is magnetic pen; In the time that double cone body rolls, magnetic pen leaves trajectory with cordless on magnetic plate, and compares with described reference line.
3. on double cone body according to claim 1, roll experiment porch, it is characterized in that: described marking plate is transparent material, and described reference line is marked at non-marked face.
4. according to rolling experiment porch on the double cone body described in claim 1 or 2 or 3, it is characterized in that: an end points of described reference line and described double cone body are in roll initial or the measuring point position of final position tense marker pen on marking plate is consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420009226.3U CN203733380U (en) | 2014-01-07 | 2014-01-07 | Double cone upper-rolling experimental platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420009226.3U CN203733380U (en) | 2014-01-07 | 2014-01-07 | Double cone upper-rolling experimental platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203733380U true CN203733380U (en) | 2014-07-23 |
Family
ID=51203433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420009226.3U Expired - Fee Related CN203733380U (en) | 2014-01-07 | 2014-01-07 | Double cone upper-rolling experimental platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203733380U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106128237A (en) * | 2016-08-18 | 2016-11-16 | 浙江大学城市学院 | A kind of chute-type three-dimensional regulation quantitative verification Double cone up rolling condition experiment instrument |
| CN111421618A (en) * | 2020-03-31 | 2020-07-17 | 沈云云 | Wood pile branch removing device |
-
2014
- 2014-01-07 CN CN201420009226.3U patent/CN203733380U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106128237A (en) * | 2016-08-18 | 2016-11-16 | 浙江大学城市学院 | A kind of chute-type three-dimensional regulation quantitative verification Double cone up rolling condition experiment instrument |
| CN111421618A (en) * | 2020-03-31 | 2020-07-17 | 沈云云 | Wood pile branch removing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204010439U (en) | A kind of potential energy transforms the demonstration teaching aid of kinetic energy | |
| CN203733380U (en) | Double cone upper-rolling experimental platform | |
| CN203792975U (en) | Positioning changeful mold frame for calligraphy writing | |
| CN206805853U (en) | It is a kind of that there is the Business English Teaching Graphic Panel for pulling and pushing function | |
| CN205044381U (en) | Scriber for english four -line frames | |
| CN204236083U (en) | A kind of assistant teaching aid | |
| CN203995303U (en) | With the dustproof blackboard of blackboard eraser | |
| CN205211265U (en) | Projectile motion's lecture experiment appearance | |
| CN202383642U (en) | Electronic blackboard | |
| CN207614244U (en) | A kind of sport apparatus storage shelf | |
| CN202399792U (en) | Pen holder for holding pens | |
| CN206249717U (en) | A kind of high school physicses momentum conservation demonstrating device | |
| CN202378556U (en) | Parabola definition teaching demonstration ruler | |
| CN204641179U (en) | A kind of triangle is relied on oneself two side writing board of standing | |
| CN206231107U (en) | A kind of dust-free blackboard | |
| CN203945879U (en) | The auxiliary writing device of determinant for a kind of linear algebra teaching | |
| CN206231106U (en) | The all-in-one machine for multimedia teaching classroom fixed mount being moved easily | |
| CN203689859U (en) | Product for displaying trend of lotteries | |
| CN202694638U (en) | Physical test demonstrating instrument | |
| CN204045056U (en) | A kind of Chinese-character writing exercising machine | |
| CN204567005U (en) | A kind of student novel crayon used | |
| CN207602126U (en) | A kind of dual-purpose color card of flat and stereo | |
| CN202604038U (en) | Ping-pong practice table | |
| CN205609068U (en) | Novel show of english technical translator teaching vocabulary device | |
| CN204506244U (en) | A kind of mathematical education equipment |
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 |
Granted publication date: 20140723 Termination date: 20150107 |
|
| EXPY | Termination of patent right or utility model |