CN206097619U - Simple pendulum presentation device - Google Patents
Simple pendulum presentation device Download PDFInfo
- Publication number
- CN206097619U CN206097619U CN201620417332.4U CN201620417332U CN206097619U CN 206097619 U CN206097619 U CN 206097619U CN 201620417332 U CN201620417332 U CN 201620417332U CN 206097619 U CN206097619 U CN 206097619U
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- CN
- China
- Prior art keywords
- pendulum
- turnover
- expansion link
- pendulums
- guide rail
- Prior art date
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Abstract
The utility model belongs to the technical field of the teaching demonstration, in particular to simple pendulum presentation device. This simple pendulum presentation device includes bottom plate (1), be provided with transparent plate (2) of erectting on bottom plate (1), the intermediate position of transparent plate (2) is provided with vertical guide rail (21), be provided with telescopic link (3) in guide rail (21), telescopic link (3) are fixed in guide rail (21) through two knob (4), be provided with horizontal pole (31) on telescopic link (3), the intermediate position of horizontal pole (31) links to each other with telescopic link (3), horizontal pole (31) both ends respectively are provided with a simple pendulum, two simple pendulums all link to each other with telescopic link (3) through hoisting mechanism (34), two simple pendulums divide into no. One simple pendulum (32) and no. Two simple pendulum (33). The utility model discloses simple structure, convenient to use can demonstrate the motion of the simple pendulum of two different pendulum lengths or different pivot angles simultaneously to can demonstrate the same but motion of the simple pendulum that angular speed is different of two linear velocities.
Description
Technical field
The utility model belongs to teaching demonstration technical field, more particularly to a kind of single pendulum demonstration apparatus.
Background technology
Single pendulum is a kind of device that can produce reciprocally swinging, will be suspended from without weight thin bar or non-extensible fine and soft rope one end
A fixed point in gravitational field, the other end consolidates a weight bead, just constitutes single pendulum.The approximate Period Formula of simple harmonic motion：Wherein L refers to pendulum length, and g is local gravitational acceleration.And the movement knowledge of single pendulum is highly important in teaching
One piece of content.The utility model of Application No. 201520398422.9 discloses a kind of single pendulum instrument disclosed in September in 2015 23 days,
Other include pedestal (1), cross bar (2), pulling force sensor (4), single pendulum line (3), balance staff (5), photoelectric counter (6), swing ball (7)
With the vertical rod (9) being perpendicularly fixed on pedestal (1), though it has a function of timing, shortage can demonstrate simultaneously different pendulum lengths or
The motion of two single pendulums of different pivot angles.
Utility model content
The purpose of this utility model is for the deficiencies in the prior art, there is provided a kind of single pendulum demonstration apparatus, can be demonstrated simultaneously
The motion of the single pendulum of two different pendulum lengths or different pivot angles.
To solve the above problems, the utility model is adopted the following technical scheme that：
A kind of single pendulum demonstration apparatus, including base plate, are provided with the transparent panel of setting, the interposition of transparent panel on the base plate
Install and be equipped with vertical guide rail, expansion link is provided with guide rail, expansion link is fixed in guide rail by two knobs, on expansion link
Cross bar is provided with, the centre position of cross bar is connected with expansion link, cross bar two ends are each provided with a single pendulum, two single pendulums pass through
Hoisting mechanism is connected with expansion link, and two single pendulums are divided into a single pendulum and No. two single pendulums.
Change the pendulum length of single pendulum by adjusting hoisting mechanism, under the perspective effect of transparent panel, obvious can must observe two
The motion of individual single pendulum.This device can be used to observe the motion of two different single pendulums of pendulum length.Two pendulum lengths can certainly be made identical,
Make its pivot angle different, then the motion for observing two single pendulums.Therefore the forms of motion of various single pendulums can be demonstrated, is conducive to student deep
Understand and grasp the motion of single pendulum.
The groove of strip is provided with the transparent panel, 90 ° of interception bars for moving of energy are provided with groove, base plate is having
The side of groove be provided with can 90 ° of turnover boards for moving, a turnover board realizes turnover by knob, turnover board
The plane that turnover axis is moved with interception bar overlaps, and base plate opposite side is provided with 90 ° of No. two turnover boards for moving of energy, No. two turnovers
Plate is realized turning down by knob, and the turnover axis of No. two turnover boards is coplanar with expansion link.
Lower interception bar is broken, and makes a turnover board and No. two turnover boards be in vertical state, make two identical pendulum lengths
With the single pendulum of pivot angle along cycloid motion when, before a single pendulum touches interception bar, the motion state of two single pendulums is identical.And when one
When number single pendulum touches interception bar, its radius of gyration changes, due to linear velocity it is constant so angular speed becomes big, therefore in the same time
Inside turn over more angles.Might as well count in the position for intercepting bar, two single pendulums just reach turnover board through identical angle, but
The angular speed of a number single pendulum is larger, therefore first touches on a turnover board.Therefore can demonstrate under identical linear velocity but angular speed
The motion of different single pendulums.
As improvement, on the expansion link scale is provided with.The height of expansion link is conveniently adjusted, and cycloid can be measured
Length.
Used as improvement, the hoisting mechanism includes conical head, spiral knob, and cycloid is connected to spiral knob through conical head
On.The rotation of spiral knob can increase or shorten the length of cycloid.
The utility model simple structure, it is easy to use, can simultaneously demonstrate the single pendulum of two different pendulum lengths or different pivot angles
Motion, and the motion of two single pendulums that linear velocity is identical but angular speed is different can be demonstrated.
Description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the dimensional structure diagram of side of the present utility model.
Fig. 2 is the dimensional structure diagram of opposite side of the present utility model.
In figure：1- base plates；No. 12 turnover boards；13 No. two turnover boards；2- transparent panels；21- guide rails；22- grooves；3- stretches
Bar；31- cross bars；Number single pendulum of 32-；No. bis- single pendulums of 33-；34- hoisting mechanisms；35- scales；36- conical heads；37- spiral knobs；
4- knobs；5- intercepts bar.
Specific embodiment
Embodiment 1
As shown in Figure 1 and Figure 2, a kind of single pendulum demonstration apparatus, including base plate 1, are provided with the transparent of setting on the base plate 1
Plate 2, the centre position of transparent panel 2 is provided with vertical guide rail 21, guide rail 21 and is provided with expansion link 3, and expansion link 3 passes through two
Knob 4 is fixed in guide rail 21, and cross bar 31 is provided with expansion link 3, and the centre position of cross bar 31 is connected with expansion link 3, cross bar
31 two ends are each provided with a single pendulum, and two single pendulums are connected by hoisting mechanism 34 with expansion link 3, and two single pendulums are divided into No. one
Single pendulum 32 and No. two single pendulums 33.
Change the pendulum length of single pendulum by adjusting hoisting mechanism 34, under the perspective effect of transparent panel 2, obvious must can observe
The motion of two single pendulums.
It is provided with the transparent panel 2 in the groove 22 of strip, groove 22 and is provided with 90 ° of interception bars 5 for moving of energy, bottom
Plate 1 is provided with 90 ° of turnover boards 12 for moving of energy in fluted 22 side, and a turnover board 12 is realized turning over by knob 4
Folding, the plane that the turnover axis of a turnover board 12 is moved with interception bar 5 overlaps, and base plate 1 is provided with 90 ° of energy and moves in opposite side
No. two turnover boards 13, No. two turnover boards 13 realize turnover, turnover axis and the expansion link 3 of No. two turnover boards 13 by knob 4
It is coplanar.
Break lower interception bar 5, and make a turnover board 12 and No. two turnover boards 13 be in vertical state, make two it is identical
The single pendulum of pendulum length and pivot angle along during cycloid motion, before a single pendulum 32 touches interception bar 5, the motion state phase of two single pendulums
Together.And when a single pendulum 32 touches interception bar 5, its radius of gyration changes, due to linear velocity it is constant so angular speed becomes big, therefore
More angles are turned within the same time.Might as well count in the position for intercepting bar 5, two single pendulums are arrived through identical angle
Up to turnover board, but the angular speed of a single pendulum 32 is larger, therefore first touches on a turnover board.
Scale 35 is provided with expansion link 3.The height of expansion link 3 is conveniently adjusted, and the length of cycloid can be measured.
Hoisting mechanism 34 includes conical head 36, spiral knob 37, and cycloid is connected on spiral knob 37 through conical head 36.
The rotation of spiral knob 37 can increase or shorten the length of cycloid.
Claims (3)
1. a kind of single pendulum demonstration apparatus, it is characterised in that：Including base plate (1), the transparent panel of setting is provided with the base plate (1)
(2), the centre position of transparent panel (2) is provided with vertical guide rail (21), guide rail (21) and is provided with expansion link (3), expansion link
(3) it is fixed in guide rail (21) by two knobs (4), cross bar (31), the interposition of cross bar (31) is provided with expansion link (3)
Put and be connected with expansion link (3), cross bar (31) two ends are each provided with a single pendulum, two single pendulums pass through hoisting mechanism (34) and stretch
Contracting bar (3) is connected, and two single pendulums are divided into a single pendulum (32) and No. two single pendulums (33)；Strip is provided with the transparent panel (2)
90 ° of interception bars (5) for moving of energy are provided with the groove (22) of shape, groove (22), base plate (1) sets in the side of fluted (22)
90 ° of turnover boards (12) for moving of energy are equipped with, a turnover board (12) is realized turning down by knob (4), a turnover board
(12) plane that turnover axis is moved with interception bar (5) overlaps, and base plate (1) is provided with opposite side can 90 ° of No. two for moving
Turnover board (13), No. two turnover boards (13) are realized turning down by knob (4), the turnover axis and expansion link of No. two turnover boards (13)
(3) it is coplanar.
2. single pendulum demonstration apparatus as claimed in claim 1, it is characterised in that：Scale (35) is provided with the expansion link (3).
3. single pendulum demonstration apparatus as claimed in claim 1, it is characterised in that：The hoisting mechanism (34) is including conical head
(36), spiral knob (37), cycloid is connected on spiral knob (37) through conical head (36).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620417332.4U CN206097619U (en) | 2016-05-04 | 2016-05-04 | Simple pendulum presentation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620417332.4U CN206097619U (en) | 2016-05-04 | 2016-05-04 | Simple pendulum presentation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206097619U true CN206097619U (en) | 2017-04-12 |
Family
ID=58471119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620417332.4U Expired - Fee Related CN206097619U (en) | 2016-05-04 | 2016-05-04 | Simple pendulum presentation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206097619U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109166416A (en) * | 2018-08-31 | 2019-01-08 | 南京理工大学 | A kind of mechanics experiment with simple pendulum test device |
-
2016
- 2016-05-04 CN CN201620417332.4U patent/CN206097619U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109166416A (en) * | 2018-08-31 | 2019-01-08 | 南京理工大学 | A kind of mechanics experiment with simple pendulum test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170412 Termination date: 20180504 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |