CN107862946A - The synthesis demonstration device of power in physics teaching - Google Patents
The synthesis demonstration device of power in physics teaching Download PDFInfo
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- CN107862946A CN107862946A CN201711322271.9A CN201711322271A CN107862946A CN 107862946 A CN107862946 A CN 107862946A CN 201711322271 A CN201711322271 A CN 201711322271A CN 107862946 A CN107862946 A CN 107862946A
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- 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
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Abstract
The synthesis demonstration device of power in physics teaching,Including operating platform,The corner of the bottom of operating platform respectively sets a support bar,Operating platform top surface front portion opens up chute,Several sliding blocks are set in chute,The top of sliding block sets montant,Bearing is set between montant and sliding block,First pulley is fixedly mounted in the top of montant,The middle part of montant sets connecting rod,Second pulley is fixedly mounted in the top of connecting rod,Operating platform top surface rear portion sets fixed plate,One end of fixed plate and weight beam is rotatablely connected,The other end of weight beam connects one end of several drawstrings,The other end of drawstring is fixedly connected on the top of counterweight holder,Counterweight holder can place counterweight,Through groove is opened up on front side of operating platform,Through groove can connect with chute,Sliding block is fixedly connected with one end of screw rod,The other end of screw rod is through through groove and positioned at the outside of through groove,Nut is set on screw rod.The synthesis of demonstration power that can be vivid of the invention, it is easy to teacher's explanation and student to understand.
Description
Technical field
The invention belongs to physics field, the synthesis demonstration device of power specifically in physics teaching.
Background technology
Physics is to promote human development and progressive important subject, and the knowledge use of physics is in terms of the side of life
Face, so physics is imparted knowledge to students as important subject in modern teaching, because the knowledge of physics is much intended to practical application,
Such as the synthesis of acceleration, active force and reaction force and power and decomposition etc., the knowledge teacher of these theoretical properties is imparting knowledge to students
During either explained oral account by way of writing on the blackboard more difficult, while student is also more difficult, the especially synthesis of power
Process, the size and direction, student for how judging two power or the power of multiple power synthesis only lean on teacher's writing on the blackboard power on blackboard
Building-up process is more abstract, and student is unable to practical operation, understands poor.
The content of the invention
The present invention provides the synthesis demonstration device of power in physics teaching, the defects of to solve in the prior art.
The present invention is achieved by the following technical programs：
The synthesis demonstration device of power in physics teaching, including operating platform, the corner of the bottom of described operating platform are each
The top of a vertical support bar is fixedly connected with, described operating platform top surface front portion opens up chute, set in described chute
Several sliding blocks are put, the top of described sliding block sets montant, bearing is set between described montant and sliding block, described montant
Bottom is fixedly connected with the inner ring of bearing, and the outer ring of described bearing is fixedly connected with a slide block, and the top of described montant is fixed
First pulley is installed, the middle part of described montant sets connecting rod, and described connecting rod is angularly disposed, the bottom of described connecting rod
End is fixedly connected with montant, and second pulley is fixedly mounted in the top of described connecting rod, and described operating platform top surface rear portion is set
Put fixed plate, one end rotation connection of described fixed plate and weight beam, the other end connection of described weight beam
One end of several drawstrings, described drawstring quantity is consistent with the quantity of first pulley, and the other end of described drawstring can pass through successively
First pulley and second pulley are crossed, the other end of described drawstring is fixedly connected on the top of counterweight holder, described counterweight
Holder can place counterweight, and through groove is opened up on front side of described operating platform, and described through groove can connect with chute, described cunning
Block is fixedly connected with one end of horizontally disposed screw rod towards the side of through groove, and the other end of described screw rod through through groove and is located at
The outside of through groove, nut is set, described screw rod coordinates with nut thread to fix sliding block on described screw rod.
The synthesis demonstration device of power in physics teaching as described above, link is fixedly mounted in described fixed plate, it is described
The both ends of weight beam the first hook is set respectively, described weight beam towards one end of link the first hook with
Link mounting connection, first hook of the one end of described weight beam away from link are connected with connecting rope, described connection
The both ends of rope are respectively installed by one annulus, the first hook and connecting rope one end of the one end of described weight beam away from link
Annulus mounting coordinates, and described drawstring sets the second hook close to one end of weight beam, the described connecting rope other end
Annulus and the second hook mount, and the underface of described connecting rope sets first angle plate, and the underface of described drawstring is set
Second angle plate.
The synthesis demonstration device of power in physics teaching as described above, scale is set on the front end of described operating platform
Line.
The synthesis demonstration device of power in physics teaching as described above, the bottom installation placed cavity of described operating platform.
The synthesis demonstration device of power in physics teaching as described above, is set flexible between described montant and first pulley
Bar, the bottom of described expansion link are fixedly connected with montant, and the top of described expansion link is fixedly connected in first pulley.
The synthesis demonstration device of power in physics teaching as described above, the bottom of described counterweight holder set magnet.
It is an advantage of the invention that：The synthesis of demonstration power that can be vivid of the invention, it is easy to teacher's explanation and student's reason
Solution.The present invention instead of the direction of component, represents the size of component by drawstring by counterweight holder and counterweight, and spring
Dynamometer shows the size made a concerted effort, while judges direction with joint efforts by the incline direction of weight beam；Using process
In by corresponding counterweight holder carry out swing weight-adding operation come realize change component size, pass through screw rod and nut
Coordinating easily can move and fix sliding block so as to realize the direction of change component, due to setting bearing between montant and sliding block,
So montant can turn to most stable of position under the drive in drawstring during mobile sliding block, this hair is effectively raised
Bright stability, while guide bracing wire effectively to increase the strong point jointly by first pulley and second pulley, effectively carry
The high stability of the present invention；In use by aforesaid operations to corresponding counterweight holder carry out swing weight-adding come
Change the component size that drawstring represents, changed by the display numerical value of weight beam so as to show that component increases and decreases pairing
The influence of power size, while can be rotated by weight beam and rotation amplitude is so as to showing that component increases and decreases pairing
The influence of force direction；In use by aforesaid operations band movable slider move through screw rod and nut by sliding block fixation come
Change the direction for the component that drawstring represents, changed by the display numerical value of weight beam so as to show component direction pair
The influence of size with joint efforts, while can be rotated by weight beam and rotation amplitude is so as to showing component direction pair
The influence of resultant direction；It is of the invention also to enter one by changing the size and Orientation for the component that drawstring represents simultaneously in use
The building-up process of the demonstration power of step, and make a concerted effort size and the factor in direction are influenceed, it is easy to teachers ' teaching and student to understand.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of front view of the present invention；
Fig. 2 is the structural representation of top view of the present invention；
Fig. 3 is Fig. 1 I portions partial enlarged drawing；
Fig. 4 is Fig. 2 II portions partial enlarged drawing；
Fig. 5 is Fig. 2 III portions partial enlarged drawing.
Reference：The connecting rod 9 second of 1 operating platform, 2 support bar, 3 chute, 4 sliding block, 5 montant, 6 bearing, 7 first pulley 8 is slided
Take turns the link 19 first of 10 fixed plate, 11 weight beam, 12 drawstring, 13 counterweight holder, 14 counterweight, 15 through groove, 16 screw rod, 17 nut 18
Link up with the expansion link of 26 placed cavity of the annulus 22 second of 20 connecting rope 21 hook 23 first angle plate, 24 second angle plate, 25 graduation mark 27
28 magnet.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The synthesis demonstration device of power in physics teaching, including operating platform 1, the corner of the bottom of described operating platform 1
The top of a vertical support bar 2 is respectively fixedly connected with, the described top surface front portion of operating platform 1 opens up chute 3, described chute
Several sliding blocks 4 are set in 3, the top of described sliding block 4 sets montant 5, bearing 6 is set between described montant 5 and sliding block 4,
The bottom of described montant 5 is fixedly connected with the inner ring of bearing 6, and the outer ring of described bearing 6 is fixedly connected with sliding block 4, described
The top of montant 5 be fixedly mounted first pulley 7, the middle part of described montant 5 sets connecting rod 8, and described connecting rod 8 is oblique
Setting, the bottom of described connecting rod 8 is fixedly connected with montant 5, and second pulley 9 is fixedly mounted in the top of described connecting rod 8,
The described top surface rear portion of operating platform 1 sets fixed plate 10, and described fixed plate 10 and one end of weight beam 11 rotate company
Connect, the other end of described weight beam 11 connects one end of several drawstrings 12, the described quantity of drawstring 12 and first pulley 7
Quantity it is consistent, the other end of described drawstring 12 can pass through first pulley 7 and second pulley 9 successively, described drawstring 12
The other end is fixedly connected on the top of counterweight holder 13, and described counterweight holder 13 can place counterweight 14, described operation
The front side of platform 1 opens up through groove 15, and described through groove 15 can connect with chute 3, and described sliding block 4 is towards the side of through groove 15
One end of horizontally disposed screw rod 16 is fixedly connected with, the other end of described screw rod 16 is through through groove 15 and positioned at through groove 15
Outside, nut 17 is set on described screw rod 16, and described screw rod 16 can fix sliding block 4 with the cooperation of the screw thread of nut 17.
The synthesis demonstration device of power in physics teaching as described above, link 18 is fixedly mounted in described fixed plate 10,
The both ends of described weight beam 11 set the first hook 19 respectively, and described weight beam 11 is towards the one of link 18
First hook 19 at end connects with the mounting of link 18, first hook of the described one end of weight beam 11 away from link 18
19 are connected with connecting rope 20, and respectively one annulus 21 of installation, described weight beam 11 are remote at the both ends of described connecting rope 20
First hook 19 of one end of link 18 coordinates with the mounting of annulus 21 of the one end of connecting rope 20, and described drawstring 12 is close to spring
One end of dynamometer 11 sets the second hook 22, the mounting of the hook of annulus 21 and second 22 of the described other end of connecting rope 20, institute
The underface for the connecting rope 20 stated sets first angle plate 23, and the underface of described drawstring 12 sets second angle plate 24.This
Invention instead of the direction of component, represents the size of component by drawstring 12 by counterweight holder 13 and counterweight 14, and bullet
The size that the display of spring dynamometer 11 is made a concerted effort, while direction with joint efforts is judged by the incline direction of weight beam 11；Make
The size of change component is realized by carrying out the operation of swing weight-adding 14 to corresponding counterweight holder 13 during, is passed through
Screw rod 16 and nut 17, which coordinate, easily can move and fix sliding block 4 and change the direction of component so as to realize, due to montant 5 and
Bearing 6 is set between sliding block 4, so during mobile sliding block montant 5 can be turned under the drive of drawstring 12 it is most stable
Position, effectively raise the stability of the present invention, while bracing wire 12 guided by first pulley 7 and second pulley 9 jointly
The strong point can effectively be increased, effectively raise the stability of the present invention；In use by aforesaid operations to phase
The counterweight holder 13 answered carries out swing weight-adding 14 to change the component size of the representative of drawstring 12, passes through weight beam 11
Can display numerical value changes so as to show that component increases and decreases the influence to size of making a concerted effort, while be sent out by weight beam 11
Rotation and rotation amplitude are given birth to so as to show that component increases and decreases the influence to resultant direction；Pass through aforesaid operations in use
Screw rod 16 and nut 17 are moved through by sliding block fixation to change the direction for the component that drawstring 12 represents with movable slider 4, are passed through
The display numerical value of weight beam 11 changes so as to the influence for showing component direction to size of making a concerted effort, while passes through spring
Can dynamometer 11 rotate and rotation amplitude is so as to showing influence of the component direction to resultant direction；The present invention makes
Also the building-up process of power can be further demonstrated by changing the size and Orientation for the component that drawstring 12 represents simultaneously in, with
And make a concerted effort size and the factor in direction are influenceed, it is easy to teachers ' teaching and student to understand.
Specifically, it is not directly perceived due to demonstrating direction with joint efforts for the direction with weight beam 11, can not be clear
The angle for learning component direction and resultant direction change of Chu, in order to overcome above mentioned problem, the fixed plate 10 described in the present embodiment
Upper fixed installation link 18, the both ends of described weight beam 11 set the first hook 19, described weight beam respectively
11 the first hook 19 towards one end of link 18 connects with the mounting of link 18, and described weight beam 11 is away from link 18
First hook of one end 19 be connected with connecting rope 20, an annulus 21 is respectively installed at the both ends of described connecting rope 20, described
First hook 19 of the one end of weight beam 11 away from link 18 coordinates with the mounting of annulus 21 of the one end of connecting rope 20, described
Drawstring 12 sets the second hook 22, the annulus 21 and second of the described other end of connecting rope 20 close to one end of weight beam 11
The mounting of hook 22, the underface of described connecting rope 20 set first angle plate 23, and the underface of described drawstring 12 sets the
Two angle boards 24.Direction with component with joint efforts can accurately be learnt by first angle plate 23 and second angle plate 24, be easy to
Know with joint efforts or component direction change, while weight beam 11 by both ends first hook 19 respectively with link 18 and annulus
21 mountings coordinate, and so as to the convenient changing when weight beam 11 breaks down, while can easily be obtained by connecting rope 20
Know direction with joint efforts, convenient observation.
Specifically, due to not contrasting thing in mobile sliding block 4, movement is more inaccurate, in order to overcome above mentioned problem, this reality
Apply setting graduation mark 25 on the front end of the operating platform 1 described in example.Sliding block 4 can accurately be moved by graduation mark 25, conveniently made
With.
Further, because the grade relative article of counterweight 14 is nowhere placed, in order to overcome above mentioned problem, described in the present embodiment
The bottom installation placed cavity 26 of operating platform 1.The grade relative article of counterweight 14, convenient use convenient can be placed by placed cavity 26
Further, because the height of first pulley 7 can not be adjusted, it is not convenient to use, in order to overcome above mentioned problem, this
Expansion link 27 is set between the montant 5 and first pulley 7 described in embodiment, and bottom and the montant 5 of described expansion link 27 are fixed
Connection, the top of described expansion link 27 is fixedly connected in first pulley.First pulley 7 convenient can be adjusted by expansion link 27
Highly, it is easy to use.
Further, because when to counterweight 13 swing weight-adding 14 of holder, weight 14 can skew and tumble sometimes, it is also necessary to
Counterweight 14 is picked up, is not convenient to use, in order to overcome above mentioned problem, the bottom of the counterweight holder 13 described in the present embodiment sets magnetic
Iron 28.Counterweight 14 can be adsorbed by magnet 28, avoid counterweight 14 from being tumbled from counterweight holder 13, effectively raise
The stability of the present invention.
Embodiment
The synthesis demonstration device of power in physics teaching, including operating platform 1, set on the front end of described operating platform 1
Graduation mark 25, the bottom installation placed cavity 26 of described operating platform 1, each fixation in corner of the bottom of described operating platform 1
The top of a vertical support bar 2 is connected, the described top surface front portion of operating platform 1 opens up chute 3, set in described chute 3
Several sliding blocks 4 are put, the top of described sliding block 4 sets montant 5, and bearing 6 is set between described montant 5 and sliding block 4, described
The bottom of montant 5 is fixedly connected with the inner ring of bearing 6, and the outer ring of described bearing 6 is fixedly connected with sliding block 4, described montant 5
Top be fixedly mounted first pulley 7, between described montant 5 and first pulley 7 set expansion link 27, described expansion link 27
Bottom be fixedly connected with montant 5, the top of described expansion link 27 is fixedly connected in first pulley, in described montant 5
Portion sets connecting rod 8, and described connecting rod 8 is angularly disposed, and the bottom of described connecting rod 8 is fixedly connected with montant 5, described
Second pulley 9 is fixedly mounted in the top of connecting rod 8, and the described top surface rear portion of operating platform 1 sets fixed plate 10, described fixation
One end of plate 10 and weight beam 11 is rotatablely connected, and the other end of described weight beam 11 connects several drawstrings 12
One end, link 18 is fixedly mounted in described fixed plate 10, the both ends of described weight beam 11 set the first hook respectively
19, described weight beam 11 connects towards first hook 19 of one end of link 18 with the mounting of link 18, described spring
First hook 19 of the one end of dynamometer 11 away from link 18 is connected with connecting rope 20, and the both ends of described connecting rope 20 are respectively pacified
Fill an annulus 21, first hook 19 and the circle of the one end of connecting rope 20 of the described one end of weight beam 11 away from link 18
The mounting of ring 21 coordinates, and described drawstring 12 sets the second hook 22, described connecting rope 20 close to one end of weight beam 11
The mounting of the hook of annulus 21 and second 22 of the other end, the underface of described connecting rope 20 sets first angle plate 23, described
The underface of drawstring 12 sets second angle plate 24, the drawing consistent, described with the quantity of first pulley 7 of the described quantity of drawstring 12
The other end of rope 12 can pass through first pulley 7 and second pulley 9 successively, and the other end of described drawstring 12 is fixedly connected on counterweight
The top of holder 13, described counterweight holder 13 can place counterweight 14, and the bottom of described counterweight holder 13 sets magnetic
Iron 28, the front side of described operating platform 1 open up through groove 15, and described through groove 15 can connect with chute 3, the described court of sliding block 4
One end of horizontally disposed screw rod 16 is fixedly connected with to the side of through groove 15, the other end of described screw rod 16 passes through through groove 15
And positioned at the outside of through groove 15, nut 17 is set on described screw rod 16, described screw rod 16 and the screw thread of nut 17 coordinate can be by
Sliding block 4 is fixed.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (6)
1. the synthesis demonstration device of power in physics teaching, it is characterised in that：Including operating platform (1), described operating platform (1)
The corner of bottom be respectively fixedly connected with the top of a vertical support bar (2), described operating platform (1) top surface front portion opens up
Chute (3), described chute (3) is interior to set several sliding blocks (4), and the top of described sliding block (4) sets montant (5), described
Bearing (6) is set between montant (5) and sliding block (4), and the bottom of described montant (5) is fixedly connected with the inner ring of bearing (6), institute
The outer ring for the bearing (6) stated is fixedly connected with sliding block (4), and first pulley (7), institute is fixedly mounted in the top of described montant (5)
The middle part for the montant (5) stated sets connecting rod (8), and described connecting rod (8) is angularly disposed, the bottom of described connecting rod (8)
It is fixedly connected with montant (5), second pulley (9), described operating platform (1) is fixedly mounted in the top of described connecting rod (8)
Top surface rear portion sets fixed plate (10), and described fixed plate (10) and one end of weight beam (11) are rotatablely connected, described
The other end of weight beam (11) connects one end of several drawstrings (12), described drawstring (12) quantity and first pulley (7)
Quantity it is consistent, the other end of described drawstring (12) can pass through first pulley (7) and second pulley (9), described drawing successively
The other end of rope (12) is fixedly connected on the top of counterweight holder (13), and described counterweight holder (13) can place counterweight
(14) through groove (15), is opened up on front side of described operating platform (1), described through groove (15) can connect with chute (3), described
Sliding block (4) is fixedly connected with one end of horizontally disposed screw rod (16) towards the side of through groove (15), described screw rod (16) it is another
One end sets nut (17), described screw rod through through groove (15) and on the outside of through groove (15), described screw rod (16)
(16) coordinating with nut (17) screw thread can be fixed by sliding block (4).
2. the synthesis demonstration device of power in physics teaching according to claim 1, it is characterised in that：Described fixed plate
(10) link (18) is fixedly mounted on, the both ends of described weight beam (11) set the first hook (19) respectively, described
Weight beam (11) is connected towards first hook (19) of one end of link (18) with link (18) mounting, and described spring is surveyed
First hook (19) of the one end of power meter (11) away from link (18) is connected with connecting rope (20), and the two of described connecting rope (20)
One annulus (21) of each installation is held, first hook (19) of the one end of described weight beam (11) away from link (18) is with connecting
Annulus (21) mounting of splicing (20) one end coordinates, and described drawstring (12) sets second close to one end of weight beam (11)
Link up with (22), the annulus (21) of described connecting rope (20) other end and the second hook (22) mounting, described connecting rope (20)
Underface first angle plate (23) is set, the underface of described drawstring (12) sets second angle plate (24).
3. the synthesis demonstration device of power in physics teaching according to claim 1, it is characterised in that：Described operating platform
(1) graduation mark (25) is set on front end.
4. the synthesis demonstration device of power in physics teaching according to claim 1, it is characterised in that：Described operating platform
(1) bottom installation placed cavity (26).
5. the synthesis demonstration device of power in physics teaching according to claim 1, it is characterised in that：Described montant (5)
Expansion link (27) is set between first pulley (7), and the bottom of described expansion link (27) is fixedly connected with montant (5), described
The top of expansion link (27) be fixedly connected in first pulley.
6. the synthesis demonstration device of power in physics teaching according to claim 1, it is characterised in that：Described counterweight is placed
The bottom of box (13) sets magnet (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711322271.9A CN107862946A (en) | 2017-12-12 | 2017-12-12 | The synthesis demonstration device of power in physics teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711322271.9A CN107862946A (en) | 2017-12-12 | 2017-12-12 | The synthesis demonstration device of power in physics teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107862946A true CN107862946A (en) | 2018-03-30 |
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ID=61706223
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711322271.9A Pending CN107862946A (en) | 2017-12-12 | 2017-12-12 | The synthesis demonstration device of power in physics teaching |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108597319A (en) * | 2018-04-27 | 2018-09-28 | 赵桐 | A kind of high school physics mechanics principle displaying device |
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| CN202258038U (en) * | 2011-09-09 | 2012-05-30 | 兰州交通大学 | Teaching demonstrating device for vector combination and decomposition of force |
| CN202434100U (en) * | 2011-12-28 | 2012-09-12 | 上海外国语大学附属大境中学 | Graphic demonstration device for composition of force |
| CN204463598U (en) * | 2015-01-23 | 2015-07-08 | 郑州利生科教设备有限公司 | Demonstration device is decomposed in the synthesis of power |
| CN206349033U (en) * | 2016-12-25 | 2017-07-21 | 郑育景林 | High school physicses Experiments of Machanics analogue means |
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2017
- 2017-12-12 CN CN201711322271.9A patent/CN107862946A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201489707U (en) * | 2009-09-04 | 2010-05-26 | 朱福兰 | Force synthesis and resolution teaching demonstration instrument |
| CN202258038U (en) * | 2011-09-09 | 2012-05-30 | 兰州交通大学 | Teaching demonstrating device for vector combination and decomposition of force |
| CN202434100U (en) * | 2011-12-28 | 2012-09-12 | 上海外国语大学附属大境中学 | Graphic demonstration device for composition of force |
| CN204463598U (en) * | 2015-01-23 | 2015-07-08 | 郑州利生科教设备有限公司 | Demonstration device is decomposed in the synthesis of power |
| CN206349033U (en) * | 2016-12-25 | 2017-07-21 | 郑育景林 | High school physicses Experiments of Machanics analogue means |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108597319A (en) * | 2018-04-27 | 2018-09-28 | 赵桐 | A kind of high school physics mechanics principle displaying device |
| CN108597319B (en) * | 2018-04-27 | 2019-11-05 | 赵桐 | A kind of high school physics mechanics principle displaying device |
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