CN103971566A - Circular motion comprehensive-experiment platform - Google Patents
Circular motion comprehensive-experiment platform Download PDFInfo
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- CN103971566A CN103971566A CN201410242351.3A CN201410242351A CN103971566A CN 103971566 A CN103971566 A CN 103971566A CN 201410242351 A CN201410242351 A CN 201410242351A CN 103971566 A CN103971566 A CN 103971566A
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- circular motion
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Abstract
The invention discloses a circular motion comprehensive-experiment platform and belongs to an education or demonstration apparatus and particularly relates to an experiment facility for demonstrating circular motion in physics. The comprehensive-experiment platform is characterized by comprising a box type base, a power device in the box type base, an in-horizontal-plane circular motion demonstrating device on the top surface of the box type base, and a centripetal force testing device. The comprehensive-experiment platform has the beneficial effects that by virtue of the platform, multiple types of typical circular motion in a horizontal plane can be accomplished and especially centripetal force can be supplied for peculiar force phenomena such as side surface attaching phenomenon, namely side surface elasticity so as to finish verification. The relationship among centripetal force, mass, rotation speed and radius is verified accurately by means of controlling the variable. The comprehensive-experiment platform has a visual shape and a simple structure and a novel teaching aid is provided for physical education.
Description
Technical field
The invention belongs to education or demonstration equipment; Experimental provision especially for circular motion in demonstration physics.
Background technology
Circular motion is important physical motion, contact application widely in productive life, but at present, the experimental demonstration equipment of relevant circular motion, function is simple, single, is substantially to rest in qualitative aspect.Phenomenon to some typical cases, peculiar power cannot show student's (such as side attachment phenomenon, side elastic force provides centripetal force) can only allow student contact real daily life on classroom, carries out space imagination.CN203480737U discloses a kind of centripetal force demonstrator of probing into, its structure is that reducing motor is fixed in bearing inner race, iron rod is fixedly connected with the inner ring of bearing, shaft coupling is fixedly connected with the outer ring of bearing by band iron, the outer ring of bearing is fixedly connected with cant beam, described cant beam is with respect to the symmetrical placement of bearing, the top of cant beam is fixed with metal trough, one end of metal trough is fixed with miniature electronic and claims, described miniature electronic claims vertical placement, and the lower position correspondence that miniature electronic claims is placed with portable speed-measuring instrument.Only can demonstrate the size of centripetal force, CN203134213U discloses a kind of centripetal force experimental provision, comprise base, pallet, dynamometer, swiveling wheel, swingle and change speed motor, described base is rectangular frame structure, at the horizontal tray of a side roof part, opposite side is installed dynamometer, in inner side, base stage casing, change speed motor is installed; Described pallet is disc-shaped structure, and swiveling wheel is installed in below, the center of circle, and the top of swiveling wheel is placed on end face through the pallet center of circle, on swiveling wheel top, crosses installation swingle, at swingle one end sleeve, centrifugal globe is installed; Swiveling wheel is connected by belt conduction device with change speed motor; Longitudinal axis center place at swiveling wheel offers hole, through hole, introduces a draught line; One end of described draught line is connected with centrifugal globe, and the other end is connected with dynamometer.Also only can show the relation of centripetal force and rotating speed, CN202013680U discloses a kind of Multifunctional centripetal force measuring rotary table, although compared with prior art, adopt variable-frequency power sources to drive the mode of synchronous motor to realize uniform rotation, speed governing and meter speed settle at one go, without electromagnetism or photoelectrical velocity measure equipment; Utilize handheld electronic scale to replace spring balance or pulling force sensor, thereby removed DIS experimental system from; With rotating disk, replace crossbeam, without counterweight, make to rotate more stable.But cannot demonstrate the experiment of planar circumferential motion.
Summary of the invention
In order to overcome existing experimental facilities function singleness, be not suitable for the deficiency that middle school teaching is used, the invention provides a kind of circular motion synthesis experiment platform, this circular motion synthesis experiment platform not only can the various circular motion phenomenons of qualitative demonstration, and measurement centripetal force that can be quantitative.
The technical solution adopted for the present invention to solve the technical problems is: a kind of circular motion synthesis experiment platform, it is characterized in that: comprise box type substructure, be arranged on the propulsion system in box type substructure, be arranged on surface level inner periphery motion demonstrating device, centripetal force proving installation on box type substructure table top
Described propulsion system comprise arrangements for speed regulation and the power switch of motor and control motor speed, and motor shaft and main shaft use spiral sleeve to be mounted in the bearing on box type substructure table top,
Described surface level inner periphery motion demonstrating device comprises the transparent tank of the circle being fixed on main shaft, and this bottom of gullet is fixed wtih speed cycle dish, is placing mobilizable test block in groove.
Described centripetal force proving installation comprises the upper horizontal slide rail being fixed on main shaft, lower horizontal slide rail, cylindrical slider is enclosed within upper, lower horizontal on slide rail, upper, lower horizontal is fixed wtih dynamometry cross bar on the main shaft between slide rail, between dynamometry cross bar and cylindrical slider, dynamometer spring is housed, laterally on the box type substructure table top of slide rail below, rule and spring balance panel is installed.
Described spindle top is provided with groove, and the swing ball that is connecting cotton rope is housed in groove.
Described surface level inner periphery motion demonstrating device also comprises side attachment phenomenon demonstrator, and this device is comprised of the L-type metal bracket that is fixed on the fixed mount on main shaft and can move up and down in fixed mount, and the horizontal component front end of L-type metal bracket is U-shaped.
Described centripetal force proving installation also comprises cylindrical slider movement locus pen recorder, and this pen recorder is comprised of with the transparent small hose that is connected ram pump and cylindrical slider bottom tip the ram pump being fixed on main shaft, and hose end is equipped with injection needle.
Described arrangements for speed regulation are inductance arrangements for speed regulation, electrically-actuated throttle device or RHVC.
Described upper horizontal slide rail is fixed wtih mass being equipped with on the reverse direction of cylindrical slider.
Described cylindrical slider is comprised of slide block core and the slide block set that covers on slide block core appearance, and slide block set can take off separately.
Using method of the present invention is: 1. the test block of placing unlike material and quality in the bottom of the transparent tank of circle, starter motor makes circular transparent tank rotation, can observe the difference of centrifugal force under different rotating speeds, 2. mention L-type metal bracket and near circular transparent inboard wall of cistern place, place the test block that resilient material is made at bracket, then starter motor makes circular transparent tank rotation fall L-type metal bracket, can observe resilient material is made when rotating speed reaches certain speed test block due to side elastic force, the effect of friction force is attached to circular transparent inboard wall of cistern and can fall, 3. in the groove of main shaft, take out swing ball, starter motor makes main shaft rotation can observe rotating speed difference, tie up to the drift angle difference of the circular cone track of the cotton rope formation on swing ball, 4. pass through control variate method, checking centripetal force, quality, rotating speed, when the relation of radius is tested, directly coil from the top observation cycle, readout interval.By speed-regulating switch, regulate the rotating speed of motor, the different cycles value that can read 0.4s, 0.5s, 0.6s, 0.8s, 1.0s, 1.2s on cycle dish.In ram pump, suck water, when regulating the rotating speed of motor, cycle stability on cycle dish is when a certain numerical value, touch fast the piston of ram pump, water is by transparent small hose, from being fixed on cylindrical slider bottom, be arranged on the injection needle ejection of hose end, be sprinkled upon on the spring balance panel and rule of box type substructure table top.By reading the numerical value of spring balance panel, rule, can read the suffered spring tension of cylindrical slider, and moving radius.And slide block core quality 0.1Kg, the slide block set quality 0.05Kg of cylindrical slider, dismounting slide block can change the quality of research object very easily.
The invention has the beneficial effects as follows that this experiment porch can complete the typical circular motion, the particularly phenomenon of peculiar power of multinomial surface level energy, such as side attachment phenomenon, side elastic force provides centripetal force to verify.By control variate method, verify more accurately the relation of centripetal force, quality, rotating speed, radius.Equipment is visual in image, simple in structure, for middle school physics teaching provides a kind of Novel teaching aid.
Accompanying drawing explanation
Fig. 1 is longitudinal profile of the present invention structural map,
Fig. 2 is the left view of Fig. 1,
Fig. 3 is the vertical view of Fig. 1,
Fig. 4 is circuit theory diagrams of the present invention.
In figure, 1. motor, 2. arrangements for speed regulation, 3. power switch, 4. power supply, 5. motor shaft, 6. box type substructure table top, 7. bearing, 8. time horizontal slide rail, 9. dynamometry cross bar, 10. mass, horizontal slide rail on 11., 12. main shafts, 13. cycle dishes, 14. circular transparent tanks, 15. unit of plastics, 16.L type metal bracket, 17. fixed mounts, 18. grooves, 19. ram pumps, 20. transparent small hoses, 21. cylindrical sliders, 211. slide block cores, 212. slide block sets, 22. dynamometer springs, 23. rules, 24. spring balance panels, 25. swing balls.
Embodiment
The specific embodiment of the present invention is, as shown in the figure:
Embodiment 1, and a kind of circular motion synthesis experiment platform, is characterized in that: comprise box type substructure, be arranged on the propulsion system in box type substructure, be arranged on surface level inner periphery motion demonstrating device, centripetal force proving installation on box type substructure table top 6,
Described propulsion system comprise inductance type arrangements for speed regulation 2 and the power switch 3 of motor 1 and control motor speed, and motor shaft 5 is used spiral sleeves to be mounted in the bearing 7 on box type substructure table top with main shaft 12,
Described surface level inner periphery motion demonstrating device comprises the transparent tank 14 of the circle being fixed on main shaft, and this bottom of gullet is fixed wtih speed cycle dish 13, is placing mobilizable test block in groove.
Described centripetal force proving installation comprises the upper horizontal slide rail 11 being fixed on main shaft, lower horizontal slide rail 8, cylindrical slider 21 is enclosed within upper, lower horizontal on slide rail, upper, lower horizontal is fixed wtih dynamometry cross bar 9 on the main shaft between slide rail, dynamometer spring 22 is housed between dynamometry cross bar and cylindrical slider, laterally on the box type substructure table top of slide rail below, rule 23 and spring balance panel 24 is installed.
Embodiment 2, and a kind of circular motion synthesis experiment platform, is characterized in that: comprise box type substructure, be arranged on the propulsion system in box type substructure, be arranged on surface level inner periphery motion demonstrating device, centripetal force proving installation on box type substructure table top 6,
Described propulsion system comprise electronic type arrangements for speed regulation 2 and the power switch 3 of motor 1 and control motor speed, and motor shaft 5 is used spiral sleeves to be mounted in the bearing 7 on box type substructure table top with main shaft 12,
Described surface level inner periphery motion demonstrating device comprises the transparent tank 14 of the circle being fixed on main shaft, and this bottom of gullet is fixed wtih speed cycle dish 13, is placing mobilizable test block in groove.
Described centripetal force proving installation comprises the upper horizontal slide rail 11 being fixed on main shaft, lower horizontal slide rail 8, cylindrical slider 21 is enclosed within upper, lower horizontal on slide rail, upper, lower horizontal is fixed wtih dynamometry cross bar 9 on the main shaft between slide rail, dynamometer spring 22 is housed between dynamometry cross bar and cylindrical slider, laterally on the box type substructure table top of slide rail below, rule 23 and spring balance panel 24 is installed.
Described spindle top is provided with groove 18, and the swing ball 25 that is connecting cotton rope is housed in groove.
Described surface level inner periphery motion demonstrating device also comprises side attachment phenomenon demonstrator, this device forms by be fixed on the fixed mount 17 on main shaft and the L-type metal bracket 16 that can move up and down in fixed mount, and the horizontal component front end of L-type metal bracket is U-shaped.
Embodiment 3, and a kind of circular motion synthesis experiment platform, is characterized in that: comprise box type substructure, be arranged on the propulsion system in box type substructure, be arranged on surface level inner periphery motion demonstrating device, centripetal force proving installation on box type substructure table top 6,
Described propulsion system comprise RHVC 2 and the power switch 3 of motor 1 and control motor speed, and motor shaft 5 is used spiral sleeves to be mounted in the bearing 7 on box type substructure table top with main shaft 12,
Described surface level inner periphery motion demonstrating device comprises the transparent tank 14 of the circle being fixed on main shaft, and this bottom of gullet is fixed wtih speed cycle dish 13, is placing mobilizable test block in groove.
Described centripetal force proving installation comprises the upper horizontal slide rail 11 being fixed on main shaft, lower horizontal slide rail 8, cylindrical slider 21 is enclosed within upper, lower horizontal on slide rail, upper, lower horizontal is fixed wtih dynamometry cross bar 9 on the main shaft between slide rail, dynamometer spring 22 is housed between dynamometry cross bar and cylindrical slider, laterally on the box type substructure table top of slide rail below, rule 23 and spring balance panel 24 is installed.
Described spindle top is provided with groove 18, and the swing ball 25 that is connecting cotton rope is housed in groove.
Described surface level inner periphery motion demonstrating device also comprises side attachment phenomenon demonstrator, this device forms by be fixed on the fixed mount 17 on main shaft and the L-type metal bracket 16 that can move up and down in fixed mount, and the horizontal component front end of L-type metal bracket is U-shaped.
Described centripetal force proving installation also comprises cylindrical slider movement locus pen recorder, and this pen recorder is comprised of with the transparent small hose 20 that is connected ram pump and cylindrical slider bottom tip the ram pump 19 being fixed on main shaft.
Described upper horizontal slide rail is fixed wtih mass 10 being equipped with on the reverse direction of cylindrical slider.Described cylindrical slider is comprised of slide block core 211 and the slide block set 212 that covers on slide block core appearance, and slide block set can take off separately.
Claims (8)
1. a circular motion synthesis experiment platform, is characterized in that: comprises box type substructure, is arranged on the propulsion system in box type substructure, be arranged on surface level inner periphery motion demonstrating device, centripetal force proving installation on box type substructure table top,
Described propulsion system comprise arrangements for speed regulation and the power switch of motor and control motor speed, and motor shaft and main shaft use spiral sleeve to be mounted in the bearing on box type substructure table top,
Described surface level inner periphery motion demonstrating device comprises the transparent tank of the circle being fixed on main shaft, and this bottom of gullet is fixed wtih speed cycle dish, is placing mobilizable test block in groove,
Described centripetal force proving installation comprises the upper horizontal slide rail being fixed on main shaft, lower horizontal slide rail, cylindrical slider is enclosed within upper, lower horizontal on slide rail, upper, lower horizontal is fixed wtih dynamometry cross bar on the main shaft between slide rail, between dynamometry cross bar and cylindrical slider, dynamometer spring is housed, laterally on the box type substructure table top of slide rail below, rule and spring balance panel is installed.
2. circular motion synthesis experiment platform according to claim 1, is characterized in that: described spindle top is provided with groove, and the swing ball that is connecting cotton rope is housed in groove.
3. circular motion synthesis experiment platform according to claim 1, it is characterized in that: described surface level inner periphery motion demonstrating device also comprises side attachment phenomenon demonstrator, this device is comprised of the L-type metal bracket that is fixed on the fixed mount on main shaft and can move up and down in fixed mount, and the horizontal component front end of L-type metal bracket is U-shaped.
4. circular motion synthesis experiment platform according to claim 1, it is characterized in that: described centripetal force proving installation also comprises cylindrical slider movement locus pen recorder, this pen recorder is comprised of with the transparent small hose that is connected ram pump and cylindrical slider bottom tip the ram pump being fixed on main shaft, and hose end is equipped with injection needle.
5. circular motion synthesis experiment platform according to claim 1, is characterized in that: described arrangements for speed regulation are inductance arrangements for speed regulation, electrically-actuated throttle device or RHVC.
6. circular motion synthesis experiment platform according to claim 1, is characterized in that: described upper horizontal slide rail is fixed wtih mass being equipped with on the reverse direction of cylindrical slider.
7. circular motion synthesis experiment platform according to claim 1, is characterized in that: described cylindrical slider is comprised of slide block core and the slide block set that covers on slide block core appearance, and slide block set can take off separately.
8. the using method of the described circular motion synthesis experiment platform of one of claim 1-7, it is characterized in that: A. places the test block of unlike material and quality in the bottom of the transparent tank of circle, starter motor makes circular transparent tank rotation, can observe the difference of centrifugal force under different rotating speeds
B. mention L-type metal bracket and near circular transparent inboard wall of cistern place, place the test block that resilient material is made at bracket, then starter motor makes circular transparent tank rotation fall L-type metal bracket, can observe resilient material is made when rotating speed reaches certain speed test block can not fall because the effect of side elastic force, friction force is attached to circular transparent inboard wall of cistern
C. in the groove of main shaft, take out swing ball, starter motor makes main shaft rotation can observe rotating speed difference, ties up to the drift angle difference of the circular cone track of the cotton rope formation on swing ball,
D. by control variate method, during the relation experiment of checking centripetal force, quality, rotating speed, radius, directly from top observation cycle dish, readout interval.By speed-regulating switch, regulate the rotating speed of motor, can on cycle dish, read 0.4s, 0.5s, 0.6s, 0.8s, 1.0s, the different cycles value of 1.2s, in ram pump, suck water, when regulating the rotating speed of motor, cycle stability on cycle dish is when a certain numerical value, touch fast the piston of ram pump, water is by transparent small hose, from being fixed on cylindrical slider bottom, be arranged on the injection needle ejection of hose end, be sprinkled upon on the spring balance panel and rule of box type substructure table top, by reading spring balance panel, the numerical value of rule, can read the suffered spring tension of cylindrical slider, and moving radius.And slide block core quality 0.1Kg, the slide block set quality 0.05Kg of cylindrical slider, dismounting slide block can change the quality of research object very easily.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410242351.3A CN103971566B (en) | 2014-06-03 | 2014-06-03 | Circular motion synthesis experiment platform |
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| CN201410242351.3A CN103971566B (en) | 2014-06-03 | 2014-06-03 | Circular motion synthesis experiment platform |
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| CN103971566A true CN103971566A (en) | 2014-08-06 |
| CN103971566B CN103971566B (en) | 2016-08-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104575187A (en) * | 2015-01-30 | 2015-04-29 | 王振环 | Kinetics study apparatus of vertical plane |
| CN106128237A (en) * | 2016-08-18 | 2016-11-16 | 浙江大学城市学院 | A kind of chute-type three-dimensional regulation quantitative verification Double cone up rolling condition experiment instrument |
| CN107025828A (en) * | 2017-04-28 | 2017-08-08 | 浙江大学城市学院 | Centripetal force is demonstrated and quantitative verification experiment instrument |
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| GR1004994B (en) * | 2005-01-07 | 2005-09-16 | Δημητριος Τσαουσης | Device for the study of the angular momentum and the calculation of the centripetal force work |
| CN201498119U (en) * | 2009-08-31 | 2010-06-02 | 王建东 | Horizontal centrifuge |
| CN202549114U (en) * | 2012-03-27 | 2012-11-21 | 西华师范大学 | Electric centripetal force quantitative analysis demonstration instrument |
| CN203055252U (en) * | 2012-12-28 | 2013-07-10 | 刘召新 | A centripetal force demonstrator |
| CN203480737U (en) * | 2013-10-23 | 2014-03-12 | 陈骥 | Demonstration instrument for centripetal force exploration |
| CN203895007U (en) * | 2014-06-03 | 2014-10-22 | 济南市长清中学 | Circular motion comprehensive experimental platform |
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2014
- 2014-06-03 CN CN201410242351.3A patent/CN103971566B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2056536U (en) * | 1989-08-08 | 1990-04-25 | 唐定山 | Demonstrator for centripetal force |
| GR1004994B (en) * | 2005-01-07 | 2005-09-16 | Δημητριος Τσαουσης | Device for the study of the angular momentum and the calculation of the centripetal force work |
| CN201498119U (en) * | 2009-08-31 | 2010-06-02 | 王建东 | Horizontal centrifuge |
| CN202549114U (en) * | 2012-03-27 | 2012-11-21 | 西华师范大学 | Electric centripetal force quantitative analysis demonstration instrument |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104575187A (en) * | 2015-01-30 | 2015-04-29 | 王振环 | Kinetics study apparatus of vertical plane |
| CN104575187B (en) * | 2015-01-30 | 2017-02-22 | 青岛农业大学 | Kinetics study apparatus of vertical plane |
| CN106128237A (en) * | 2016-08-18 | 2016-11-16 | 浙江大学城市学院 | A kind of chute-type three-dimensional regulation quantitative verification Double cone up rolling condition experiment instrument |
| CN107025828A (en) * | 2017-04-28 | 2017-08-08 | 浙江大学城市学院 | Centripetal force is demonstrated and quantitative verification experiment instrument |
| CN107025828B (en) * | 2017-04-28 | 2022-10-18 | 浙江大学城市学院 | Centripetal force demonstration and quantitative verification experimental instrument |
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| CN103971566B (en) | 2016-08-17 |
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