CN201812409U - Standing wave interactive demonstration device - Google Patents

Standing wave interactive demonstration device Download PDF

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Publication number
CN201812409U
CN201812409U CN2010205380983U CN201020538098U CN201812409U CN 201812409 U CN201812409 U CN 201812409U CN 2010205380983 U CN2010205380983 U CN 2010205380983U CN 201020538098 U CN201020538098 U CN 201020538098U CN 201812409 U CN201812409 U CN 201812409U
Authority
CN
China
Prior art keywords
bull stick
slide bar
demonstrating
rope
rod
Prior art date
Application number
CN2010205380983U
Other languages
Chinese (zh)
Inventor
黄骥
吴为昊
陈康
Original Assignee
上海科技馆
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 上海科技馆 filed Critical 上海科技馆
Priority to CN2010205380983U priority Critical patent/CN201812409U/en
Application granted granted Critical
Publication of CN201812409U publication Critical patent/CN201812409U/en

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Abstract

The utility model discloses a standing wave interactive demonstration device, comprising a power driving mechanism, a rotary rod component, a rope and a stroboscopic lamp light source, wherein the power driving mechanism comprises a power source and a rotary shaft driven by the power source to rotate; the rotary rod component comprises a rotary rod which is arranged opposite to the rotary shaft; and one end of the rope is connected with the rotary shaft of the power driving mechanism, and the other end is connected with the rotary rod of the rotary rod component. After the technical scheme is adopted, the rope is driven to rotate by the power source and can generate waveform motion trail. By adjusting the flashing frequency of a stroboscopic lamp, visitors can intuitively see various standing wave forms with different trails and different amplitudes, and therefore, the understanding of the visitors to the mechanical wave is increased.

Description

Standing wave interactive demonstration device
Technical field
The utility model relates to a kind of interactive demonstration device.
Background technology
The rope ripple is a kind of simple shear wave, and in daily life, we pick up an end of a rope and once shake, and just can see that a waveform propagates on rope, shakes up and down if continuously carry out periodicity, has just formed the rope ripple.The waveform of rope can allow the people that ripple is had impression intuitively.Yet simple rope skipping recreation can't present the ever-changing of waveform intuitively, more can't annotate the various the principless of science that contained in the generation of ripple.Condition that for example stack of ripple, interference and standing wave form or the like.
Standing wave is meant, the ripple of frequency and the two train waves stack back formation that amplitude is all identical, direction of vibration is consistent, the direction of propagation is opposite.Two train waves stack back waveform is not pushed ahead, so claim standing wave.When standing wave passed through, each particle was all done simple harmonic motion; The amplitude of each particle vibration is unequal, and amplitude is that zero point is called node or node, the amplitude maximum o'clock between two nodes, be called antinode or antinode.For the notion of standing wave, people can understand, but how to form for standing wave, are the difficult points of middle school teaching always.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of standing wave interactive demonstration device, and it can demonstrate the characteristics of mechanical wave particle movement when propagating, thereby deepens the understanding of participant to mechanical wave and standing wave.
The technical scheme that the utility model adopted is: a kind of standing wave interactive demonstration device comprises: power-driven mechanism, this power-driven mechanism comprise a power source and the rotating shaft of being rotated by this drive power source; The bull stick assembly, this bull stick assembly comprises a bull stick, bull stick and rotating shaft are oppositely arranged; Rope, an end of this rope is connected with the rotating shaft of power-driven mechanism, and the other end is connected with the bull stick of bull stick assembly; The stroboscopic lamp light source.
Above-mentioned standing wave interactive demonstration device, wherein, this apparatus for demonstrating also comprises a telescopic component; Telescopic component comprises the slide bar sleeve and is arranged on the slide bar that this slide bar sleeve is interior and but along continuous straight runs moves back and forth that the bull stick assembly is installed in an end of this slide bar.
Above-mentioned standing wave interactive demonstration device, wherein, this apparatus for demonstrating comprises that also one is used to drive the inclined to one side wheel rotary components that the slide bar along continuous straight runs moves back and forth, this is taken turns rotary components partially and comprises handwheel, wheel shaft, fork and connecting rod; Handwheel links to each other with an end of wheel shaft, and the other end of wheel shaft links to each other with an end of fork; One end of the other end of fork and connecting rod is connected, and the other end of connecting rod and the other end of slide bar are rotationally connected; Axle sleeve is provided with a bearing, and bearing is supported on the bearing seat.
Above-mentioned standing wave interactive demonstration device, wherein, fork, connecting rod and bearing seat all are arranged in the shell, an end and handwheel that slide bar is provided with bull stick all are arranged on outside this shell, the end that slide bar is provided with the bull stick assembly is supported by an auxiliary stand, the other end of slide bar passes shell, is rotationally connected with connecting rod; Power source is a motor, and this motor is supported by an electric machine support, and electric machine support and motor all are arranged in the outer cover.
After adopting technique scheme, drive the rope rotation by power source, rope can produce the waveform movement locus in the communication process of power.Regulate the frequency of flashing of stroboscopic lamp, can make the visitor see the various standing wave waveforms of different tracks, various amplitude intuitively, thereby increase their understanding mechanical wave.
Description of drawings
Fig. 1 is that the master of apparatus for demonstrating of the present utility model looks synoptic diagram.
Fig. 2 is the schematic side view of Fig. 1.
Fig. 3 is the cross-sectional view of overlooking of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing the utility model is made and to be further specified.
Standing wave interactive demonstration device of the present utility model comprises power-driven mechanism, bull stick assembly, telescopic component, takes turns rotary components, rope and stroboscopic lamp light source partially.
Referring to figs. 1 to Fig. 4.Power-driven mechanism comprises motor 11 and by the rotating shaft 12 of motor 11 driven in rotation, motor 11 is by an electric machine support 13 supportings, and electric machine support 13 and motor 11 all are arranged in the outer cover 14.
The bull stick assembly comprises a bull stick 21, and bull stick 21 is oppositely arranged with rotating shaft 12, and preferably, bull stick 21 is located on the same line with the axis of rotating shaft 12.One end of rope 3 is connected with rotating shaft 12, and the other end is connected with bull stick 21.During demonstration, motor 11 drives rope 3 rotations by rotating shaft 12, and bull stick 21 rotates thereupon together, can prevent the rope knotting.
But telescopic component comprises slide bar sleeve 41 and is arranged on the slide bar 42 that these slide bar sleeve 41 interior also along continuous straight runs move back and forth.The wheel rotary components comprises handwheel 51, wheel shaft 52, fork 53 and connecting rod 54 partially.Handwheel 51 links to each other with an end of wheel shaft 52, also is provided with one handle 50 on handwheel 51.The other end of wheel shaft 52 links to each other with an end of fork 53, and the other end of fork 53 is connected by the end of a connecting pin 55 with connecting rod 54.Wheel shaft 52 is arranged with a bearing 56, and bearing 56 is supported on the bearing seat 57.Fork 53, connecting rod 54 and bearing seat 57 all are arranged in the shell 58, and an end of slide bar 42 and handwheel 51 are arranged on outside the shell 58, and the bull stick assembly is installed in an end of this slide bar 42.The other end of slide bar 42 passes shell 58, is rotationally connected by the other end of a bearing pin 59 with connecting rod 54.By rotation hand wheel 51, can drive slide bar 42 and bull stick assembly along continuous straight runs moves back and forth, and then influence the vibration frequency of rope self, the person of letting on can experience the persistence of vision phenomenon.Slide bar 42 is provided with an end of bull stick assembly by an auxiliary stand 23 supportings, and auxiliary stand 23, shell 58 and outer cover 14 all are arranged on the base 6.
It is the special role of persistence of vision in conjunction with the stroboscopic lamp light source that the utility model utilizes the visual persistence of human eye, the formation of the various waveforms of having deduced.When not opening stroboscopic lamp, rope is not seen certain rules, even is not seen because rotating speed is too fast.After opening stroboscopic lamp, regulating frequency makes or one-tenth integral multiple identical with the time interval of rope process same position of the glittering time interval of stroboscopic lamp, because the persistence of vision of eyes, the visitor feels that rope is static, so, just formed oscillogram intuitively.By demonstration of the present utility model, the participant can know standing wave phenomena, and the understanding standing wave is the science reason how to produce.

Claims (7)

1. a standing wave interactive demonstration device is characterized in that, comprising:
Power-driven mechanism, this power-driven mechanism comprise a power source and the rotating shaft of being rotated by this drive power source;
The bull stick assembly, this bull stick assembly comprises a bull stick, described bull stick and described rotating shaft are oppositely arranged;
Rope, an end of this rope is connected with the rotating shaft of described power-driven mechanism, and the other end is connected with the bull stick of described bull stick assembly;
The stroboscopic lamp light source.
2. apparatus for demonstrating as claimed in claim 1 is characterized in that this apparatus for demonstrating also comprises a telescopic component; Described telescopic component comprises the slide bar sleeve and is arranged on the slide bar that this slide bar sleeve is interior and but along continuous straight runs moves back and forth that described bull stick assembly is installed in an end of this slide bar.
3. apparatus for demonstrating as claimed in claim 2 is characterized in that, this apparatus for demonstrating comprises that also one is used to drive the inclined to one side wheel rotary components that described slide bar along continuous straight runs moves back and forth, and this is taken turns rotary components partially and comprises handwheel, wheel shaft, fork and connecting rod; Described handwheel links to each other with an end of described wheel shaft, and the other end of wheel shaft links to each other with an end of described fork; One end of the other end of described fork and described connecting rod is connected, and the other end of connecting rod and the other end of described slide bar are rotationally connected;
Described axle sleeve is provided with a bearing, and described bearing is supported on the bearing seat.
4. apparatus for demonstrating as claimed in claim 3, it is characterized in that, described fork, described connecting rod and described bearing seat all are arranged in the shell, an end and described handwheel that described slide bar is provided with bull stick all are arranged on outside this shell, the end that described slide bar is provided with the bull stick assembly is supported by an auxiliary stand, the other end of described slide bar passes described shell, is rotationally connected with connecting rod.
5. apparatus for demonstrating as claimed in claim 4 is characterized in that, described power source is a motor, and this motor is supported by an electric machine support, and described electric machine support and described motor all are arranged in the outer cover.
6. apparatus for demonstrating as claimed in claim 5 is characterized in that, described shell, described auxiliary stand and described outer cover all are arranged on the base.
7. apparatus for demonstrating as claimed in claim 1 is characterized in that the axis of described bull stick and described rotating shaft is located on the same line.
CN2010205380983U 2010-09-21 2010-09-21 Standing wave interactive demonstration device CN201812409U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010205380983U CN201812409U (en) 2010-09-21 2010-09-21 Standing wave interactive demonstration device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010205380983U CN201812409U (en) 2010-09-21 2010-09-21 Standing wave interactive demonstration device

Publications (1)

Publication Number Publication Date
CN201812409U true CN201812409U (en) 2011-04-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010205380983U CN201812409U (en) 2010-09-21 2010-09-21 Standing wave interactive demonstration device

Country Status (1)

Country Link
CN (1) CN201812409U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103559815A (en) * 2013-10-23 2014-02-05 国家电网公司 Round standing wave generator
CN104882050A (en) * 2015-06-06 2015-09-02 谭永 Principle for realizing visual Doppler effect
CN109671336A (en) * 2018-12-13 2019-04-23 齐齐哈尔大学 A kind of double vibration source type standing wave instrument
CN109671335A (en) * 2018-12-13 2019-04-23 齐齐哈尔大学 A kind of hand-held standing wave instrument and demenstration method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103559815A (en) * 2013-10-23 2014-02-05 国家电网公司 Round standing wave generator
CN104882050A (en) * 2015-06-06 2015-09-02 谭永 Principle for realizing visual Doppler effect
CN109671336A (en) * 2018-12-13 2019-04-23 齐齐哈尔大学 A kind of double vibration source type standing wave instrument
CN109671335A (en) * 2018-12-13 2019-04-23 齐齐哈尔大学 A kind of hand-held standing wave instrument and demenstration method

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Granted publication date: 20110427