CN103617757A - Coriolis inertial force demonstration instrument - Google Patents
Coriolis inertial force demonstration instrument Download PDFInfo
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- CN103617757A CN103617757A CN201310661345.7A CN201310661345A CN103617757A CN 103617757 A CN103617757 A CN 103617757A CN 201310661345 A CN201310661345 A CN 201310661345A CN 103617757 A CN103617757 A CN 103617757A
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- disk
- coriolis force
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- rotating shaft
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Abstract
Provided is a Coriolis inertial force demonstration instrument. The Coriolis inertial force demonstration instrument comprises a base, wherein a groove is formed in the center of the base. The Coriolis inertial force demonstration instrument further comprises a rotary shaft, a disk, a supporting column, a belt transmission mechanism and a driving mechanism used for driving the rotary shaft to rotate, wherein the bottom end of the rotary shaft is perpendicularly inserted into the groove of the base in a rotatable mode, the disk is fixed to the top end of the rotary shaft, the belt transmission mechanism is arranged above the disk through a fixing frame which is fixed to the periphery of the disk, the bottom end of the supporting column penetrates through the disk and the rotary shaft in sequence to be fixedly connected to the base, the top end of the supporting column is connected with an electromagnet arranged on the disk, and the driving mechanism is arranged on the base, and is fixedly connected with the rotary shaft. The Coriolis inertial force demonstration instrument is simple in structure and convenient to operate, and can demonstrate two different phenomena, and the situation of stress and the situation of motion of a moving object in a non-inertia system can be visually observed.
Description
Technical field
The present invention relates to a kind of experimental provision.Particularly relate to a kind of Coriolis force demonstrator.
Background technology
When a particle is done rectilinear motion with respect to inertial system, with respect to rotating system, its track is a curve.Be based on rotating system, we think has a power to order about particle motion trace forming curves, and this power is exactly Coriolis force, claims again Coriolis force.Because human lives's the earth itself is exactly a huge rotating system, so it is the reason that a lot of spontaneous phenomenons produce, as trade wind, tropical cyclone etc.At present, Coriolis force is also widely used in fluid motion field.But this theoretical abstraction, is difficult for understanding.In teaching, for helping student to understand, designed Coriolis force demonstrator.
At present existing two kinds of Coriolis force demonstrating experiment devices." Coriolis force demonstration instrument " of the first Shi You Huzhou Teachers College development, patent publication No. is CN202534225U.This device utilizes the movement locus of movable block in disk, demonstration Coriolis force phenomenon." Coriolis force experimental equipment " of the second Shi You Nanjing Aero-Space University development, patent publication No. is CN200944262, this device is to be subject to force phenomenon demonstration coriolis force phenomenon during by belt movement.
Though above two kinds of devices can be demonstrated out the phenomenon of coriolis force, but all can not Coriolis force be described and the difference between the two of the power that produced by Coriolis acceleration by demonstration.
Summary of the invention
Technical matters to be solved by this invention is, provide a kind of and can demonstrate the movement locus of particle in rotation system, also the Mechanics Phenomenon that produces Coriolis acceleration when particle moves in rotating coordinate system be can demonstrate, by two kinds of demonstrative processes, the power of Coriolis acceleration generation and the Coriolis force demonstrator of Coriolis force distinguished.
The technical solution adopted in the present invention is: a kind of Coriolis force demonstrator, include base, the center of described base is formed with groove, also be provided with rotating shaft, disk, pillar, belt gear and the driving mechanism for driving described rotating shaft to rotate, wherein, in the vertical and groove that is inserted in described base that can rotate in the bottom of described rotating shaft, described disk is fixed on the top of described rotating shaft, described belt gear is arranged at the top of described disk by being fixed on fixed mount in described disc circumference, the bottom of described pillar is run through successively described disk and rotating shaft and is fixedly connected on described base, the top connection of pillar is positioned at the electromagnet on described disk, described driving mechanism is arranged on described base, and be fixedly connected with described rotating shaft.
The bottom of described rotating shaft is connected in the groove of described base by bearing.
The top of described pillar is provided with flume structure, and described electromagnet is embedded in the skewed slot of described flume structure.
The width of described flume structure is placed on the diameter of the steel ball on disk while being greater than demonstration.
Described fixed mount is the ㄈ shape frame bracket being symmetricly set in described disc circumference by two, the open side of described ㄈ shape frame bracket is oppositely arranged, and, the base of described ㄈ shape frame bracket is fixed on the periphery of described disk, and the top of described ㄈ shape frame bracket is for supporting described belt gear.
Described belt gear includes rotatable two two turning axles on symmetrical ㄈ shape frame bracket that are separately positioned on, be fixedly connected on respectively two belt pulleys on two turning axles, be connected to two belts on belt pulley, and the motor for driving turning axle to rotate on a turning axle in two turning axles of output shaft connection, described motor is fixed on ㄈ shape frame bracket.
It is described that to be connected to two belts on belt pulley parallel with disk diameter.
Described driving mechanism includes the motor being fixedly installed on described base, be connected to the driving gear on the output shaft of described motor, the follower gear being meshed with described driving gear, described rotating shaft runs through described follower gear and is also fixedly connected with described follower gear.
On described disk, be coated with the coordinate paper of the colored vaseline adipose membrane that can demonstrate motion locus of steel ball.
A kind of Coriolis force demonstrator of the present invention, can demonstrate two kinds of different phenomenons, observes intuitively moving object and be subject to two kinds of situations of force and motion in noninertial system.The present invention is simple in structure, convenient operation.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention;
Fig. 2 is the vertical view of Fig. 1.
In figure
1: belt 2: belt pulley
3: fixed mount 4: disk
5: motor 6: rotating shaft
7: driving gear 8: motor
9: pillar 10: base
11: follower gear 12: flume structure
13: electromagnet 14: turning axle
Embodiment
Below in conjunction with embodiment and accompanying drawing, a kind of Coriolis force demonstrator of the present invention is described in detail.
As shown in Figure 1 and Figure 2, a kind of Coriolis force demonstrator of the present invention, include base 10, described base 10 center is formed with groove, is also provided with rotating shaft 6, disk 4, pillar 9, belt gear and the driving mechanism for driving described rotating shaft 6 to rotate.
Wherein, in the vertical and groove that is inserted in described base 10 that can rotate in the bottom of described rotating shaft 6, the disk 4 that is used for the steel ball of rotation test is fixed on the top of described rotating shaft 6, is coated with the coordinate paper of the coloured vaseline adipose membrane of painting that can demonstrate motion locus of steel ball on described disk 4.Described belt gear is arranged at the top of described disk 4 by being fixed on fixed mount 3 on described disk 4 peripheries.Described fixed mount 3 is the ㄈ shape frame brackets that are symmetricly set on described disk 4 peripheries by two, the open side of described ㄈ shape frame bracket is oppositely arranged, and, the base of described ㄈ shape frame bracket is fixed on the periphery of described disk 4, and the top of described ㄈ shape frame bracket is for supporting described belt gear.
Described belt gear includes rotatable two two turning axles 14 on symmetrical ㄈ shape frame bracket that are separately positioned on, be fixedly connected on respectively two belt pulleys 2 on two turning axles 14, be connected to two belts 1 on belt pulley 2, and output shaft connects on a turning axle in two turning axles 14 for driving the motor 5 of turning axle 14 rotations, described to be connected to two belts 1 on belt pulley 2 parallel with disk diameter, and described motor 5 is fixed on ㄈ shape frame bracket.
The bottom of described pillar 9 is run through successively described disk 4 and rotating shaft 6 and is fixedly connected on described base 10, the top connection of pillar 9 is positioned at the electromagnet 13 on described disk 4,, the top of described pillar 9 is provided with flume structure 12, described electromagnet 13 is embedded in the skewed slot of described flume structure 12, and the width of described flume structure 12 is placed on the diameter of the steel ball on disk 4 while being slightly larger than demonstration.Described driving mechanism is arranged on described base 10, and is fixedly connected with described rotating shaft 6.
Described driving mechanism includes the motor 8 being fixedly installed on described base 10, be connected to the driving gear 7 on the output shaft of described motor 8, the follower gear 11 being meshed with described driving gear 7, described rotating shaft 6 runs through described follower gear 11 and is also fixedly connected with described follower gear 11.
A kind of Coriolis force demonstrator of the present invention, the steel ball being placed on during by flume structure 12, disk 4, electromagnet 13, pillar 9 and demonstration on disk 4 forms track demonstration part jointly.
A kind of Coriolis force demonstrator of the present invention, can demonstrate two kinds of phenomenons:
1. starter motor 8, and by driving gear 7 and follower gear 11 transmissions, rotating shaft 6 is with certain rotational speed, and disk 4 rotates together with rotating shaft 6, and disk 4 can be used as the rotation system that an angular velocity is ω.Now, starter motor 5, and belt 1 does not move, and just do not produce Coriolis force yet.When starter motor 8 not, a starter motor 5, now, the left side belt pulley being connected with motor 5 is that the transmission that driving wheel passes through belt drives the belt pulley on right side to rotate, belt 1 moving linearly, and disk 4 does not rotate, and does not now also produce Coriolis force.
2. simultaneously starter motor 8 and motor 5, the left side belt pulley being now connected with motor 5 is that the transmission that driving wheel passes through belt drives the belt pulley on right side to rotate, belt 1 moving linearly.Because belt gear, fixed mount 3, disk 4, rotating shaft 6 are mutually permanently connected, rotate together, so belt 1 relatively rotates, be (disk 4) moving linearly, now can be observed the phenomenon of outer of belt or indent.According to convected motion, be the acceleration composition principle a of uniform rotation campaign
a=a
r+ a
e+ a
c, a
c=2 (ω * ν) know that belt is subject to two radial forces and a power vertical with belt, and this power is exactly the power that Coriolis acceleration produces.
When disk 4 rotates, by electromagnet 13, discharge steel ball, skewed slot is fixedly mounted on pillar 9, so steel ball relative inertness is moving linearly, in object relative inertness system, in rotation system, move along a curved path during moving linearly, can be observed steel ball and can on the coordinate paper of disk, form a curve under Action of Gravity Field, be the movement locus of steel ball under Coriolis force effect.
Claims (9)
1. a Coriolis force demonstrator, include base (10), the center of described base (10) is formed with groove, it is characterized in that, also be provided with rotating shaft (6), disk (4), pillar (9), belt gear and the driving mechanism for driving described rotating shaft (6) to rotate, wherein, in the vertical and groove that is inserted in described base (10) that can rotate in the bottom of described rotating shaft (6), described disk (4) is fixed on the top of described rotating shaft (6), described belt gear is arranged at the top of described disk (4) by being fixed on fixed mount (3) on described disk (4) periphery, the bottom of described pillar (9) is run through successively described disk (4) and rotating shaft (6) and is fixedly connected on described base (10), the top connection of pillar (9) is positioned at the electromagnet (13) on described disk (4), described driving mechanism is arranged on described base (10), and be fixedly connected with described rotating shaft (6).
2. a kind of Coriolis force demonstrator according to claim 2, is characterized in that, the bottom of described rotating shaft (6) is connected in the groove of described base (10) by bearing.
3. a kind of Coriolis force demonstrator according to claim 1, is characterized in that, the top of described pillar (9) is provided with flume structure (12), and described electromagnet (13) is embedded in the skewed slot of described flume structure (12).
4. a kind of Coriolis force demonstrator according to claim 3, is characterized in that, the width of described flume structure (12) is placed on the diameter of the steel ball on disk (4) while being greater than demonstration.
5. a kind of Coriolis force demonstrator according to claim 1, it is characterized in that, described fixed mount (3) is the ㄈ shape frame bracket being symmetricly set on described disk (4) periphery by two, the open side of described ㄈ shape frame bracket is oppositely arranged, and, the base of described ㄈ shape frame bracket is fixed on the periphery of described disk (4), and the top of described ㄈ shape frame bracket is for supporting described belt gear.
6. a kind of Coriolis force demonstrator according to claim 1 or 5, it is characterized in that, described belt gear includes rotatable two two turning axles (14) on symmetrical ㄈ shape frame bracket that are separately positioned on, be fixedly connected on respectively two belt pulleys (2) on two turning axles (14), be connected to the belt (1) on two belt pulleys (2), and the motor (5) for driving turning axle (14) to rotate on a turning axle in output shaft two turning axles of connection (14), described motor (5) is fixed on ㄈ shape frame bracket.
7. a kind of Coriolis force demonstrator according to claim 6, is characterized in that, the described belt (1) being connected on two belt pulleys (2) is parallel with disk diameter.
8. a kind of Coriolis force demonstrator according to claim 1, it is characterized in that, described driving mechanism includes the motor (8) being fixedly installed on described base (10), be connected to the driving gear (7) on the output shaft of described motor (8), the follower gear (11) being meshed with described driving gear (7), described rotating shaft (6) runs through described follower gear (11) and is also fixedly connected with described follower gear (11).
9. a kind of Coriolis force demonstrator according to claim 1, is characterized in that, is coated with the coordinate paper of the colored vaseline adipose membrane that can demonstrate motion locus of steel ball on described disk (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310661345.7A CN103617757A (en) | 2013-12-09 | 2013-12-09 | Coriolis inertial force demonstration instrument |
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|---|---|---|---|
| CN201310661345.7A CN103617757A (en) | 2013-12-09 | 2013-12-09 | Coriolis inertial force demonstration instrument |
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| CN103617757A true CN103617757A (en) | 2014-03-05 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943003A (en) * | 2014-04-21 | 2014-07-23 | 王士涛 | Coriolis acceleration demonstration instrument |
| CN103943004A (en) * | 2014-04-22 | 2014-07-23 | 浙江工业大学 | Coriolis acceleration experiment device |
| CN103977550A (en) * | 2014-04-11 | 2014-08-13 | 浙江工业大学 | Coriolis football device |
| CN104021708A (en) * | 2014-05-19 | 2014-09-03 | 上海理工大学 | Coriolis acceleration demonstration instrument and coriolis inertia force measuring method |
| CN104835388A (en) * | 2015-03-13 | 2015-08-12 | 长春工业大学 | Coriolis acceleration demonstrating and computing device based on physical simulation form, and method thereof |
| CN107341998A (en) * | 2017-08-11 | 2017-11-10 | 昆明理工大学 | A kind of coriolis force fiber communication experiment demonstration instrument |
| CN108417124A (en) * | 2018-05-11 | 2018-08-17 | 西安科技大学 | Coriolis acceleration measures and acceleration composite theorem examines experimental provision and method |
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| CN200944262Y (en) * | 2006-09-13 | 2007-09-05 | 南京航空航天大学 | Coriolis inertial force experimental device |
| CN202534225U (en) * | 2012-04-06 | 2012-11-14 | 湖州师范学院 | Coriolis force demonstrator |
| CN103021233A (en) * | 2012-12-20 | 2013-04-03 | 天津大学 | Turntable type Coriolis force experimental instrument |
| CN203596124U (en) * | 2013-12-09 | 2014-05-14 | 唐山学院 | Coriolis inertial force demonstration instrument |
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2013
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Patent Citations (4)
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| CN200944262Y (en) * | 2006-09-13 | 2007-09-05 | 南京航空航天大学 | Coriolis inertial force experimental device |
| CN202534225U (en) * | 2012-04-06 | 2012-11-14 | 湖州师范学院 | Coriolis force demonstrator |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103977550A (en) * | 2014-04-11 | 2014-08-13 | 浙江工业大学 | Coriolis football device |
| CN103977550B (en) * | 2014-04-11 | 2016-05-18 | 浙江工业大学 | A kind of Coriolis football device |
| CN103943003A (en) * | 2014-04-21 | 2014-07-23 | 王士涛 | Coriolis acceleration demonstration instrument |
| CN103943003B (en) * | 2014-04-21 | 2019-08-20 | 武汉兮锐科技有限公司 | Coriolis acceleration demonstrator |
| CN103943004A (en) * | 2014-04-22 | 2014-07-23 | 浙江工业大学 | Coriolis acceleration experiment device |
| CN104021708A (en) * | 2014-05-19 | 2014-09-03 | 上海理工大学 | Coriolis acceleration demonstration instrument and coriolis inertia force measuring method |
| CN104021708B (en) * | 2014-05-19 | 2016-06-08 | 上海理工大学 | Coriolis acceleration demonstrator and section's formula inertia force measuring method |
| CN104835388A (en) * | 2015-03-13 | 2015-08-12 | 长春工业大学 | Coriolis acceleration demonstrating and computing device based on physical simulation form, and method thereof |
| CN107341998A (en) * | 2017-08-11 | 2017-11-10 | 昆明理工大学 | A kind of coriolis force fiber communication experiment demonstration instrument |
| CN108417124A (en) * | 2018-05-11 | 2018-08-17 | 西安科技大学 | Coriolis acceleration measures and acceleration composite theorem examines experimental provision and method |
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Application publication date: 20140305 |