CN201130456Y - Teaching aid for demonstration of pulley machinery - Google Patents
Teaching aid for demonstration of pulley machinery Download PDFInfo
- Publication number
- CN201130456Y CN201130456Y CNU200720185048XU CN200720185048U CN201130456Y CN 201130456 Y CN201130456 Y CN 201130456Y CN U200720185048X U CNU200720185048X U CN U200720185048XU CN 200720185048 U CN200720185048 U CN 200720185048U CN 201130456 Y CN201130456 Y CN 201130456Y
- Authority
- CN
- China
- Prior art keywords
- hole
- rotating shaft
- demonstration
- pulley
- supporting rod
- 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
Images
Landscapes
- Pulleys (AREA)
Abstract
The utility model relates to a teaching tool for pulley mechanism demonstration, which is characterized in that an outrigger is arranged on a bottom plate ; a baffle is positioned vertically on the bottom plate; a plurality of longitudinally and laterally interlaced graduation lines are arranged on the facade of the baffle; a plurality of through holes are arranged on the intersection points of the longitudinal graduation lines and the lateral graduation lines; a rotating shaft or a supporting rod is arranged in a through hole; when the rotating shaft is arranged in a through hole, a fixed pulley is sleeved on the rotating shaft and a lifting rope is passing through a slideway of the fixed pulley, with a weight on one end and a pair of spring scales on the other; when a supporting rod is arranged in a through hole, the supporting rod is connected with one end of a springboard. The teaching tool for pulley mechanism demonstration has the advantages of simple structure, high operability, vivid knowledge demonstration of pulley mechanism, capability of synchronically doing a plurality of experiments, effort saving and time saving effect, which not only help teachers to quickly finish teaching tasks, but also help students to enhance study interest, practicing ability, question analyzing and question solving abilities.
Description
Technical field
The utility model relates to a kind of teaching aid, particularly relates to a kind of teaching aid of demonstrating pulley machinery, is to having replenishing of physics teaching in secondary school apparatus kind now, belonging to the school supply and stationery category.
Background technology
At present, middle and primary schools' teaching aid kind is a lot, but function singlenesses all just designs at the content that needs separately to show.In junior middle school physics teaching, make the student grasp the knowledge of pulley machinery by experiment, it is very important content in the physics teaching, yet be again one of the important of physics lesson and the course of beyonding one's depth, student and teacher press for teaching aid targetedly, the teaching aid of existing demonstration pulley machinery, complex structure, DeGrain, and be difficult for observing, be difficult to make student's proof procedure of pulley machinery that undergoes, thereby bring certain difficulty to teaching, even have influence on student performance and learning interest.
The utility model content
The purpose of this utility model is to overcome the prior art above shortcomings, improves by research, provides a kind of teaching aid of demonstrating pulley machinery.This novel teaching aid is simple in structure, workable, but the knowledge of ocular demonstration pulley machinery both had been convenient to the teacher and had been finished teaching task quickly, improved the interest and the manipulative ability of student's study again, very helpful to the analysis and the problem-solving ability of cultivating the student.
The technical scheme that the utility model provides is: the teaching aid of this demonstration pulley machinery, be characterized in a base plate, base plate has supporting leg, erect on the base plate baffle plate is arranged, the front surface of baffle plate is provided with the staggered scale mark of vertical and horizontal, the cross-point place of vertical scale mark on the baffle plate and horizontal scale mark is provided with through hole, be provided with rotating shaft in the through hole or as the rod of fulcrum, wherein when being provided with rotating shaft in the through hole, be with fixed pulley in the rotating shaft, be installed with lifting rope in the chute of fixed pulley, an end bolt of lifting rope has weight, and the other end bolt of lifting rope has spring balance; When being provided with as fulcrum excellent in the through hole, this rod as fulcrum is connected with an end of springboard.
Compared with prior art, the beneficial effects of the utility model are: simple in structure, workable, but the knowledge of ocular demonstration pulley machinery, both be convenient to the teacher and finished teaching task quickly, improved the interest and the manipulative ability of student's study again, very helpful to the analysis and the problem-solving ability of cultivating the student.
Description of drawings
Accompanying drawing is the structural representation that the utility model provides embodiment.
Embodiment
As shown in the figure, the teaching aid of this demonstration pulley machinery, a base plate 1 is arranged, base plate 1 has supporting leg 2, upright baffle 3 on the base plate 1, the front surface of baffle plate 3 is provided with the staggered scale mark of vertical and horizontal, the vertical scale mark 4 on the baffle plate 3 and the cross-point place of horizontal scale mark 5 are provided with through hole 6, be provided with rotating shaft 7 in the through hole 6, be with fixed pulley 8 in the rotating shaft 7, be installed with lifting rope 9 in the chute of fixed pulley 8, an end of lifting rope 9 has weight 11 by travelling block 10 bolts, and the other end bolt of lifting rope 9 has spring balance 12.
During demonstration, fixed pulley 8 is enclosed within the rotating shaft 7 on the baffle plate 3, lifting rope 9 is by the good weight 11 of travelling block 10 bolts, the good spring balance 12 of the other end bolt of lifting rope 9, pulling spring balance 12, weight 11 is risen with travelling block 10, write down the distance that weight 11 rises and spring balance 12 moves, by relatively calculating the principle that to verify the pulley acting.
When being provided with in the through hole as fulcrum excellent, this rod as fulcrum is connected with an end of springboard and has constituted the inclined-plane, with spring balance 12 weight 11 is up drawn along the inclined-plane, can intuitively see: when the hypotenuse on inclined-plane was the high N in inclined-plane times, the pulling force of spring balance 12 also was N/one of weight 11 weight.
Claims (1)
1. teaching aid of demonstrating pulley machinery, it is characterized in that having a base plate, base plate has supporting leg, erect on the base plate baffle plate is arranged, the front surface of baffle plate is provided with the staggered scale mark of vertical and horizontal, the cross-point place of vertical scale mark on the baffle plate and horizontal scale mark is provided with through hole, be provided with rotating shaft in the through hole or as the rod of fulcrum, wherein when being provided with rotating shaft in the through hole, be with fixed pulley in the rotating shaft, be installed with lifting rope in the chute of fixed pulley, an end bolt of lifting rope has weight, and the other end bolt of lifting rope has spring balance; When being provided with as fulcrum excellent in the through hole, this rod as fulcrum is connected with an end of springboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720185048XU CN201130456Y (en) | 2007-12-21 | 2007-12-21 | Teaching aid for demonstration of pulley machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720185048XU CN201130456Y (en) | 2007-12-21 | 2007-12-21 | Teaching aid for demonstration of pulley machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201130456Y true CN201130456Y (en) | 2008-10-08 |
Family
ID=40018319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720185048XU Expired - Fee Related CN201130456Y (en) | 2007-12-21 | 2007-12-21 | Teaching aid for demonstration of pulley machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201130456Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105160989A (en) * | 2015-10-16 | 2015-12-16 | 武汉大学 | Pulley winding demonstration device |
| CN110288881A (en) * | 2019-05-28 | 2019-09-27 | 上海交通大学 | A kind of modular construction mechanics experiment platform system |
-
2007
- 2007-12-21 CN CNU200720185048XU patent/CN201130456Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105160989A (en) * | 2015-10-16 | 2015-12-16 | 武汉大学 | Pulley winding demonstration device |
| CN105160989B (en) * | 2015-10-16 | 2018-03-13 | 武汉大学 | Pulley winding apparatus for demonstrating |
| CN110288881A (en) * | 2019-05-28 | 2019-09-27 | 上海交通大学 | A kind of modular construction mechanics experiment platform system |
| CN110288881B (en) * | 2019-05-28 | 2022-02-25 | 上海交通大学 | Modular structure mechanics experiment platform system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206805871U (en) | A kind of high school physicses friction force demonstration contrast experiment's device | |
| CN201130456Y (en) | Teaching aid for demonstration of pulley machinery | |
| CN204010435U (en) | Force of sliding friction demonstration instrument for teaching | |
| CN203982637U (en) | A kind of tricycle wheel direction demonstrator | |
| CN202929916U (en) | Acting force and counterforce demonstration device | |
| CN201936492U (en) | Three-view drawing demonstrating instrument | |
| CN206741784U (en) | A kind of Multifunctional demonstration device of pulley and buoyancy | |
| CN205068912U (en) | Mathematical education display unit of primary school utensil | |
| CN102831800A (en) | Apparatus for decomposing and demonstrating of force of suspension rope | |
| CN204463570U (en) | political teaching content displaying device | |
| CN203134207U (en) | Mathematics teaching board | |
| CN211427648U (en) | Angular momentum conservation law demonstration instrument | |
| CN201984689U (en) | Mechanics analysis demonstrator | |
| CN201126663Y (en) | Teaching appliances for demonstrating floating force generation | |
| CN2904164Y (en) | Simple music teaching aid | |
| CN209373872U (en) | A kind of teaching balance demonstrating model | |
| CN201156324Y (en) | Educational affiliation for demonstration of gaseous change | |
| CN204667721U (en) | A kind of physical teaching demonstration device | |
| CN203038530U (en) | An acceleration testing device used in physics teaching | |
| CN201974968U (en) | Novel simple music teaching apparatus | |
| CN202887540U (en) | Novel tool for teaching lever | |
| CN210129324U (en) | Overweight and weightlessness demonstration instrument | |
| CN2777669Y (en) | Physical teaching aid for middle school | |
| CN207367444U (en) | A kind of demonstrator of common mathematical patterns | |
| CN202008764U (en) | Mechanical demonstration teaching tool |
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 |