CN107067901A - A kind of Physical Experiment single pendulum demonstration apparatus - Google Patents
A kind of Physical Experiment single pendulum demonstration apparatus Download PDFInfo
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- CN107067901A CN107067901A CN201710435984.XA CN201710435984A CN107067901A CN 107067901 A CN107067901 A CN 107067901A CN 201710435984 A CN201710435984 A CN 201710435984A CN 107067901 A CN107067901 A CN 107067901A
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- pendulum
- belt
- demo rack
- physical experiment
- driving wheel
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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
- G09B23/10—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of solid bodies
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- Theoretical Computer Science (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The present invention relates to Physical Experiment equipment technical field, crossbearer is provided with above in particular a kind of Physical Experiment single pendulum demonstration apparatus, including demo rack and the magnet coil and AC power that are located on demo rack, demo rack, crossbearer is provided with connecting rope, connecting rope and connects pendulum；It is hollow inside pendulum, the top of pendulum is provided with opening, and its bottom is provided with square outlet, and exit is provided with grafting baffle plate in interface, interface, and baffle plate is connected through the hinge on demo rack；Upper groove and low groove are additionally provided with demo rack, the belt below pendulum is run along upper groove and low groove, and blank sheet of paper can be laid on belt；Belt connects driven pulley and driving wheel, and driving wheel is located on output shaft, and output is pivotally connected to variable-frequency motor, and the other end is supported on support frame, variable-frequency motor electrical connection frequency converter.Student is set very intuitively to observe how the simple harmonic motion trajectory of simple harmonic motion is formed, the characteristics of understanding simple harmonic motion.
Description
Technical field
The present invention relates to Physical Experiment equipment technical field, specially a kind of Physical Experiment single pendulum demonstration apparatus.
Background technology
Experiment with simple pendulum device is a kind of Physical Experiment equipment, and acceleration of gravity is calculated by the hunting period of pendulum, existing
Some single pendulum demonstrating experiment devices, are the period of motion that single pendulum is measured using sensor mostly, existing device part is also used
Analogue output unit is by the movement output of swing ball to display instrument., can be near when the pivot angle of single pendulum vibrates under conditions of being less than 10 °
Seemingly it is considered simple harmonic motion.
The patent that Chinese patent CN104867383A is announced, including the spring below support, messenger wire and single pendulum, and single pendulum
Oscillator, simulates simple harmonic motion, but can not make observation of students to the simple harmonic motion trajectory of swing ball by the motion of spring oscillator；
Another Chinese patent CN104751703A, including rocker, swing ball, infrared emission and reception framework, single-chip microcomputer and display device, pendulum
The track of ball can be, be transferred on display by sensor, although student can see the final movement locus line of single pendulum,
It is that can not intuitively observe the process of single pendulum simple harmonic motion track formation, another Chinese patent CN201804478U, in counterweight
A nib is vertically provided with block, nib is contacted with paper, increasing friction force, swings energy expenditure fast.
The content of the invention
It is an object of the invention to provide a kind of Physical Experiment single pendulum demonstration apparatus, to solve to carry in above-mentioned background technology
The problem of going out.The Physical Experiment has with single pendulum demonstration apparatus can intuitively observe the characteristics of simple harmonic motion track is formed.
To achieve the above object, the present invention provides following technical scheme：
A kind of Physical Experiment single pendulum demonstration apparatus, including demo rack and the magnet coil and alternating current that are located on demo rack
Crossbearer is provided with above source, magnet coil electrical connection AC power, the demo rack, crossbearer, which is provided with connecting rope, connecting rope, to be connected
Connect pendulum；It is hollow inside the pendulum, the top of pendulum is provided with opening, and its bottom is provided with square outlet, and exit, which is provided with, inserts
Grafting baffle plate in interface, the interface, the baffle plate is connected through the hinge on demo rack；
It is provided with below the pendulum on belt, belt and lays blank sheet of paper；The belt connection driven pulley and driving wheel, the master
Driving wheel is located on output shaft, and one end of the output shaft is connected to variable-frequency motor, and the other end is supported on support frame, the frequency conversion
Motor electrically connects frequency converter.
It is preferred that, upper groove and low groove are additionally provided with the demo rack, the lower edges of the belt below pendulum
It is corresponding with upper groove and low groove.
It is preferred that, side of the pendulum outlet at bottom provided with interface is higher than opposite side.
It is preferred that, the width of the belt is more than the width of driving wheel.
Compared with prior art, the beneficial effects of the invention are as follows：It is set to hollow inside pendulum, lower section is provided with square outlet,
Pigment, ink or fine sand can be housed inside pendulum；The magnet coil magnetic being energized when not moving is on demo rack, and bottom goes out
Mouth is inserted in the guard seal of interface simultaneously；Cutoff solenoid power supply, pendulum is swung, while baffle plate departs from pendulum, pendulum
Internal pigment, ink or fine sand is spilt；
The lower section of pendulum is provided with belt, and belt is operated under the drive of variable-frequency motor, and pigment, ink or fine sand fall after spilling
On the blank sheet of paper laid on belt, pendulum is not contacted with blank sheet of paper, is reduced the energy expenditure in pendulum swing process, is enable student non-
Often intuitively observe how the simple harmonic motion trajectory of simple harmonic motion is formed, the characteristics of understanding simple harmonic motion；Other belt
Running speed can be adjusted by frequency converter, and student can be observed under different belt speeds simultaneously, single pendulum simple harmonic motion rail
The change of trace；By the total length for the wavelength for measuring trajectory, calculating cycle time, and calculate acceleration of gravity.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is left view of the present invention；
Fig. 3 is to amplify at I of the present invention；
Fig. 4 is movement locus when variable-frequency motor of the present invention is set to X HZ；
Fig. 5 is movement locus when variable-frequency motor of the present invention is set to be less than X HZ.
In figure：1 demo rack, 101 upper grooves, 102 low grooves, 2 connecting ropes, 3 pendulums, 31 interfaces, 4 variable-frequency motors, 5 become
Frequency device, 6 driven pulleys, 7 driving wheels, 8 belts, 9 magnet coils, 10 AC powers, 11 crossbearers, 12 baffle plates, 13 hinges, 14 supports
Frame.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1-5 are referred to, the present invention provides a kind of technical scheme：
A kind of Physical Experiment single pendulum demonstration apparatus, including demo rack 1 and the magnet coil 9 being located on demo rack 1 and friendship
Power supply 10, preferably 36V or below 36V voltages are flowed, armature built in magnet coil 9 electrically connects AC power 10, and AC power 10 is led to
Obtained after crossing transformer transformation 220V, the top of demo rack 1 is provided with crossbearer 11, crossbearer 11, which is provided with connecting rope 2, connecting rope 2, to be connected
Connect pendulum 3；The inside of pendulum 3 is hollow, and the top of pendulum 3 is provided with opening, and its bottom is provided with square outlet, the chi of the size of outlet
It is very little can not be excessive, when pendulum 3 built with pigment, ink or fine sand from outlet flow out when, the delivery time can at least form one
Cycle ripple.Exit is provided with interface 31, and side of the outlet at bottom of pendulum 3 provided with interface is higher than in opposite side, interface 31
Grafting baffle plate 12, baffle plate 12 is connected on demo rack 1 by hinge 13, when baffle plate 12 makes the pendulum 3 not move, internal pigment,
Ink or fine sand will not largely be lost in；Baffle plate 12 is hinged on demo rack 1, when pendulum 3 is moved, meeting when baffle plate 12 departs from pendulum 3
Drop back under gravity, need that first magnet coil 9 is powered when testing again, make the magnetic of pendulum 3 on magnet coil 9
Afterwards, artificially baffle plate 12 is plugged in interface 31.
Calculate acceleration of gravity formula be
Wherein T is the period of motion of pendulum 3, and L is the length of connecting rope 2.
The length and connecting rope 2 of connecting rope 2 are connected to the position on crossbearer 11, to make pendulum 3 by magnetic in magnet coil 9
When upper, the angle of connecting rope 2 and vertical direction is less than 10 °., can be in connecting rope 2 and crossbearer 11 for ease of observing this angle
Junction sets a dial.
Upper groove 101 and low groove 102 are additionally provided with demo rack 1, positioned at the lower section of pendulum 3 belt 8 along upper groove 101 and
Low groove 102 is run, and the part of belt 8 is located in upper groove 101 and low groove 102, during 3 firm setting in motion of pendulum inside
Material will not be scattered to ground during experiment, and the medium line of belt 8 can be laid white at grade, on belt 8 with connecting rope 2
Paper；Belt 8 connects driven pulley 6 and driving wheel 7, and the width of belt 8 is more than the width of driving wheel 7, it is possible to reduce the width of driving wheel 7
Degree.Driving wheel 7 is located on output shaft, and one end of output shaft is connected to variable-frequency motor 4, and the other end is supported on support frame 14, is become
Frequency motor 4 electrically connects frequency converter 5, variable-frequency motor 4 model YVF80M1-4 0.75KW, the model VFD007M21A- of frequency converter 5
A 750W.S, R, T termination three phase mains of frequency converter 5, U, V, W end are connected with variable-frequency motor 4, and other inputs of frequency converter 5 are defeated
Other controllers can be connected as needed by going out end.
The lower section of pendulum 3 is provided with belt 8, and belt 8 is operated under the drive of variable-frequency motor 4, and pigment, ink or fine sand are spilt
Fall afterwards on the blank sheet of paper laid on belt 8, enable student very intuitively observe single pendulum simple harmonic motion track be how shape
Into the characteristics of understanding simple harmonic motion；The running speed of other belt 8 can be adjusted by frequency converter 5, and student can observe simultaneously
To under the different speed of belt 8, the change of single pendulum simple harmonic motion trajectory；Finally by the wavelength of trajectory on measurement blank sheet of paper
Total length, the calculating cycle time simultaneously calculates acceleration of gravity.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of Physical Experiment single pendulum demonstration apparatus, including demo rack (1) and the magnet coil (9) that is located on demo rack (1)
With AC power (10), connection AC power (10) after magnet coil (9) electric connection resistance is provided with above the demo rack (1)
Crossbearer (11), crossbearer (11) is provided with connection pendulum (3) in connecting rope (2), connecting rope (2), it is characterised in that：The pendulum
(3) inside is hollow, and the top of pendulum (3) is provided with opening, and its bottom is provided with square outlet, and exit is provided with interface (31),
The interior activity grafting baffle plate (12) of interface (31), the baffle plate (12) is connected on demo rack (1) by hinge (13)；
Belt (8) is provided with below the pendulum (3), belt lays blank sheet of paper on (8)；Belt (8) the connection driven pulley (6) and master
Driving wheel (7), the driving wheel (7) is located on output shaft, and one end of the output shaft is connected to variable-frequency motor (4), other end branch
Support is on support frame (14), variable-frequency motor (4) the electrical connection frequency converter (5).
2. a kind of Physical Experiment single pendulum demonstration apparatus according to claim 1, it is characterised in that：The demo rack (1)
On be additionally provided with upper groove (101) and low groove (102), the lower edges and upper groove of the belt (8) below pendulum (3)
And low groove (102) is corresponding (101).
3. a kind of Physical Experiment single pendulum demonstration apparatus according to claim 1, it is characterised in that：Pendulum (3) bottom
Side of the portion outlet provided with interface (31) is higher than opposite side.
4. a kind of Physical Experiment single pendulum demonstration apparatus according to claim 1, it is characterised in that：The belt (8)
Width is more than the width of driving wheel (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710435984.XA CN107067901A (en) | 2017-06-09 | 2017-06-09 | A kind of Physical Experiment single pendulum demonstration apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710435984.XA CN107067901A (en) | 2017-06-09 | 2017-06-09 | A kind of Physical Experiment single pendulum demonstration apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107067901A true CN107067901A (en) | 2017-08-18 |
Family
ID=59593831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710435984.XA Pending CN107067901A (en) | 2017-06-09 | 2017-06-09 | A kind of Physical Experiment single pendulum demonstration apparatus |
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| Country | Link |
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| CN (1) | CN107067901A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109637295A (en) * | 2018-12-04 | 2019-04-16 | 魏公望 | One kind probing into pendulosity experiment pallet |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2123799U (en) * | 1992-05-28 | 1992-12-02 | 卢元升 | Simple vibration picture instrument |
| CN2202955Y (en) * | 1994-01-29 | 1995-07-05 | 柳州铁路第二中学校 | Multi-functionmechanical vibration image demonstration apparatus |
| CN2735474Y (en) * | 2004-08-24 | 2005-10-19 | 苏长武 | Experiment instrument for simple pendulum simple harmonic vibration |
| CN201159951Y (en) * | 2008-02-04 | 2008-12-03 | 杜平 | Mathematical pendulum vibration image demonstration instrument |
| CN201868007U (en) * | 2010-11-08 | 2011-06-15 | 李勇 | Simple pendulum vibration image demonstrating instrument |
| CN202904959U (en) * | 2012-08-24 | 2013-04-24 | 西华师范大学 | Enclosed multifunctional simple pendulum experimental apparatus |
| CN204270566U (en) * | 2014-12-08 | 2015-04-15 | 张广东 | A kind of novel single pendulum |
| CN204303222U (en) * | 2014-12-19 | 2015-04-29 | 蒋煌延 | A kind of rotary drum single pendulum simple harmonic motion image demonstration device |
| CN205959484U (en) * | 2016-05-30 | 2017-02-15 | 丹阳市第五中学 | Experimental device for research simple harmonic motion |
| CN206058653U (en) * | 2016-08-04 | 2017-03-29 | 有俊达 | A kind of new simple harmonic motion trace device |
-
2017
- 2017-06-09 CN CN201710435984.XA patent/CN107067901A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2123799U (en) * | 1992-05-28 | 1992-12-02 | 卢元升 | Simple vibration picture instrument |
| CN2202955Y (en) * | 1994-01-29 | 1995-07-05 | 柳州铁路第二中学校 | Multi-functionmechanical vibration image demonstration apparatus |
| CN2735474Y (en) * | 2004-08-24 | 2005-10-19 | 苏长武 | Experiment instrument for simple pendulum simple harmonic vibration |
| CN201159951Y (en) * | 2008-02-04 | 2008-12-03 | 杜平 | Mathematical pendulum vibration image demonstration instrument |
| CN201868007U (en) * | 2010-11-08 | 2011-06-15 | 李勇 | Simple pendulum vibration image demonstrating instrument |
| CN202904959U (en) * | 2012-08-24 | 2013-04-24 | 西华师范大学 | Enclosed multifunctional simple pendulum experimental apparatus |
| CN204270566U (en) * | 2014-12-08 | 2015-04-15 | 张广东 | A kind of novel single pendulum |
| CN204303222U (en) * | 2014-12-19 | 2015-04-29 | 蒋煌延 | A kind of rotary drum single pendulum simple harmonic motion image demonstration device |
| CN205959484U (en) * | 2016-05-30 | 2017-02-15 | 丹阳市第五中学 | Experimental device for research simple harmonic motion |
| CN206058653U (en) * | 2016-08-04 | 2017-03-29 | 有俊达 | A kind of new simple harmonic motion trace device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109637295A (en) * | 2018-12-04 | 2019-04-16 | 魏公望 | One kind probing into pendulosity experiment pallet |
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Application publication date: 20170818 |