CN104167128B - For the theorem of momentum teaching aid of theoretical mechanics - Google Patents
For the theorem of momentum teaching aid of theoretical mechanics Download PDFInfo
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- CN104167128B CN104167128B CN201410342332.8A CN201410342332A CN104167128B CN 104167128 B CN104167128 B CN 104167128B CN 201410342332 A CN201410342332 A CN 201410342332A CN 104167128 B CN104167128 B CN 104167128B
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- steel ball
- gathering sill
- bearing
- theorem
- front apron
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Abstract
For the theorem of momentum teaching aid of theoretical mechanics, comprise emitter, receiving trap, with support post bearing, for being trapped among the baffle plate of bearing periphery, emitter, receiving trap and baffle plate are all fixed on bearing; Emitter comprise multiple be arranged in order for impact small front apron steel ball, for attracting the magnet of steel ball, for holding the gathering sill of steel ball and the handle for the front and back position that adjusts gathering sill, steel ball is arranged in gathering sill, the magnet described in gathering sill internal fixtion between steel ball; Slot guide is on the support post of bearing; Receiving trap comprises anchor ear, small front apron, butterfly, installation shaft, installation shaft bearing, and small front apron and butterfly are installed on the mounting shaft respectively, and anchor ear is arranged between gathering sill and installation shaft.The invention has the beneficial effects as follows: allow student utilize theorem of momentum to calculate target velocity, student being understood and grasps the knowledge point of theorem of momentum, can apply when offering theoretical mechanics laboratory in engineering and polytechnic universities.
Description
Technical field
The present invention relates to a kind of theorem of momentum teaching aid for theoretical mechanics.
Background technology
Theorem of momentum is the knowledge point that in the middle of theoretical mechanics, an application is stronger, is one of basic theory in the middle of dynamics, has a wide range of applications in many lives and engineering field.In the past, Engineering Students learns this theory and feels more uninteresting, affects results of learning.
Summary of the invention
Lack the problem of the teaching aid of demonstration to solve current theoretical mechanics teaching aid, the present invention proposes a kind of can visual learning theorem of momentum, structure is simply for the theorem of momentum teaching aid of theoretical mechanics.
Theorem of momentum teaching aid for theoretical mechanics of the present invention, it is characterized in that: comprise emitter, receiving trap, with the bearing of support post, for being trapped among the baffle plate of bearing periphery, described emitter, receiving trap and baffle plate are all fixed on described bearing; Described emitter comprise multiple be arranged in order for impact small front apron steel ball, for attracting the magnet of steel ball, for holding the gathering sill of steel ball and the handle for the front and back position that adjusts gathering sill, described steel ball is arranged in gathering sill, the magnet described in gathering sill internal fixtion between described steel ball; Described slot guide is on the support post of described bearing; Described receiving trap comprises anchor ear, small front apron, butterfly, installation shaft, installation shaft bearing, and described small front apron and described butterfly are arranged in described installation shaft respectively, and described anchor ear is arranged between gathering sill and installation shaft.
Described anchor ear is arranged the through hole that steel ball passes, and the position of the position of the through hole of described anchor ear and described small front apron is all positioned on the falling motion track of the described steel ball obtaining initial velocity.
Described emitter is provided with four for impacting the steel ball of small front apron, and be respectively the first steel ball, the second steel ball, the 3rd steel ball and the 4th steel ball, wherein said magnet is between the first described steel ball and the second steel ball.
The course of work is as follows: the one end being positioned at gathering sill after first the first steel ball being departed from magnet, then the first steel ball is discharged, now the first steel ball under the attraction of attraction fast movement to magnet place, after now the motion of the first steel ball being delivered to the 3rd steel ball successively after momentum transfer, launch the 3rd steel ball, 3rd steel ball obtains a specified initial velocity, and the 3rd steel ball and the 4th steel ball collide, and makes the 4th steel ball depart from gathering sill and makes level throw motion; Handle can regulate the front and back position of gathering sill, makes the 4th steel ball finally can impact small front apron, and when receiving the 4th steel ball, the 4th steel ball impacts small front apron by anchor ear, and installation shaft is rotated, and then butterfly is rotated.
Technical conceive of the present invention is: be converted into kinetic energy by magnetic energy in gathering sill, provide the initial velocity that steel ball one is specified, and then collide, the steel ball of end finally makes level throw motion.Student, by calculating, regulates the longitudinal separation of launching, makes bead by anchor ear, and impact small front apron, makes butterfly rotate.
The invention has the beneficial effects as follows: allow student utilize theorem of momentum to calculate target velocity, student is understood and grasps the knowledge point of theorem of momentum.Therefore the present invention can apply when offering theoretical mechanics laboratory in engineering and polytechnic universities.
Accompanying drawing explanation
Fig. 1 is structural drawing of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing
With reference to accompanying drawing:
Theorem of momentum teaching aid for theoretical mechanics of the present invention, comprise emitter 1, receiving trap 2, with the bearing 3 of support post 31, for being trapped among the baffle plate 4 of bearing periphery, described emitter 1, receiving trap 2 and baffle plate 4 are all fixed on described bearing 3; Described emitter 1 comprise multiple be arranged in order for impact small front apron steel ball 11, for attracting the magnet 12 of steel ball, for holding the gathering sill 13 of steel ball and the handle 14 for the front and back position that adjusts gathering sill, described steel ball 11 is arranged in gathering sill 13, the magnet 12 described in gathering sill 13 internal fixtion between described steel ball 11; Described gathering sill 13 frame is on the support post 31 of described bearing 3; Described receiving trap 2 comprises anchor ear 21, small front apron 22, butterfly 23, installation shaft 24, installation shaft bearing 25, described small front apron 22 and described butterfly 23 are arranged in described installation shaft 24 respectively, and described anchor ear 21 is arranged between gathering sill 13 and installation shaft 24.
Described anchor ear 21 is arranged the through hole that steel ball 11 passes, and the position of the position of the through hole of described anchor ear 21 and described small front apron 22 is all positioned on the falling motion track of the described steel ball 11 obtaining initial velocity.
Described emitter 1 is provided with four for impacting the steel ball 11 of small front apron 22, be respectively the first steel ball 111, second steel ball 112, the 3rd steel ball 113 and the 4th steel ball 114, wherein said magnet 12 is between the first described steel ball 111 and the second steel ball 112.
The course of work is as follows: the one end being positioned at gathering sill 13 after first the first steel ball 111 being departed from magnet 12, then the first steel ball 111 is discharged, under the now attraction that attracts at magnet 12 of the first steel ball 111, fast movement is to magnet 12 place, after now the motion of the first steel ball 111 being delivered to the 3rd steel ball 113 successively after momentum transfer, launch the 3rd steel ball 113,3rd steel ball 113 obtains a specified initial velocity, 3rd steel ball 113 and the 4th steel ball 114 collide, and make the 4th steel ball 114 depart from gathering sill 13 and make level throw motion; Handle can regulate the front and back position of gathering sill 13, makes the 4th steel ball 114 can finally impact small front apron 22, and when receiving the 4th steel ball 114, the 4th steel ball 114 impacts small front apron 22 by anchor ear 21, and installation shaft 24 is rotated, and then butterfly 23 is rotated.
Content described in this instructions embodiment is only enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention also comprises those skilled in the art and conceives the equivalent technologies means that can expect according to the present invention.
Claims (3)
1. for the theorem of momentum teaching aid of theoretical mechanics, it is characterized in that: comprise emitter, receiving trap, with the bearing of support post, for being trapped among the baffle plate of bearing periphery, described emitter, receiving trap and baffle plate are all fixed on described bearing; Described emitter comprise multiple be arranged in order for impact small front apron steel ball, for attracting the magnet of steel ball, for holding the gathering sill of steel ball and the handle for the front and back position that adjusts gathering sill, described steel ball is arranged in gathering sill, the magnet described in gathering sill internal fixtion between described steel ball; Described slot guide is on the support post of described bearing; Described receiving trap comprises anchor ear, small front apron, butterfly, installation shaft, installation shaft bearing, and described small front apron and described butterfly are arranged in described installation shaft respectively, and described anchor ear is arranged between gathering sill and installation shaft.
2. as claimed in claim 1 for the theorem of momentum teaching aid of theoretical mechanics, it is characterized in that: described anchor ear is arranged the through hole that steel ball passes, and the position of the position of the through hole of described anchor ear and described small front apron is all positioned on the falling motion track of the described steel ball obtaining initial velocity.
3. as claimed in claim 2 for the theorem of momentum teaching aid of theoretical mechanics, it is characterized in that: described emitter is provided with four for impacting the steel ball of small front apron, be respectively the first steel ball, the second steel ball, the 3rd steel ball and the 4th steel ball, wherein said magnet is between the first described steel ball and the second steel ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410342332.8A CN104167128B (en) | 2014-07-17 | 2014-07-17 | For the theorem of momentum teaching aid of theoretical mechanics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410342332.8A CN104167128B (en) | 2014-07-17 | 2014-07-17 | For the theorem of momentum teaching aid of theoretical mechanics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104167128A CN104167128A (en) | 2014-11-26 |
| CN104167128B true CN104167128B (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410342332.8A Active CN104167128B (en) | 2014-07-17 | 2014-07-17 | For the theorem of momentum teaching aid of theoretical mechanics |
Country Status (1)
| Country | Link |
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| CN (1) | CN104167128B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2365803A1 (en) * | 1976-09-22 | 1978-04-21 | Nicolas Roger | Elastic and inelastic collision appts. - has two pendula with magnetically held indices which are removed at extremes of oscillation to indicate amplitude of movement |
| CN101051426A (en) * | 2006-04-08 | 2007-10-10 | 司继颖 | Collision test device |
| CN202171886U (en) * | 2011-07-29 | 2012-03-21 | 广西师范大学 | Magnetic collision test apparatus |
| CN202838756U (en) * | 2012-10-09 | 2013-03-27 | 湖南工业大学 | Experimental device for testing and verifying momentum conservation in small ball collision process |
| CN204029223U (en) * | 2014-07-17 | 2014-12-17 | 浙江工业大学 | For the theorem of momentum teaching aid of theoretical mechanics |
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2014
- 2014-07-17 CN CN201410342332.8A patent/CN104167128B/en active Active
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| CN104167128A (en) | 2014-11-26 |
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