CN108447358A - Demonstrate the physics teaching experimental device of Overweight and Zero Gravity state - Google Patents
Demonstrate the physics teaching experimental device of Overweight and Zero Gravity state Download PDFInfo
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- CN108447358A CN108447358A CN201810255817.1A CN201810255817A CN108447358A CN 108447358 A CN108447358 A CN 108447358A CN 201810255817 A CN201810255817 A CN 201810255817A CN 108447358 A CN108447358 A CN 108447358A
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- 230000005484 gravity Effects 0.000 title claims description 19
- 230000001133 acceleration Effects 0.000 claims abstract description 15
- 238000000429 assembly Methods 0.000 claims abstract description 9
- 230000000712 assembly Effects 0.000 claims abstract description 9
- 230000007423 decrease Effects 0.000 claims abstract description 9
- 230000000750 progressive effect Effects 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 49
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 26
- 230000000903 blocking effect Effects 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 19
- 230000001681 protective effect Effects 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims 1
- 238000005096 rolling process Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 239000012530 fluid Substances 0.000 description 9
- 239000004677 Nylon Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229920001778 nylon Polymers 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 201000006549 dyspepsia Diseases 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- G09B23/12—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of liquids or gases
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Abstract
The present invention relates to a kind of overweight, state of weightlessness physics teaching demonstration device, including rack, be arranged above rack driving device, be arranged rack both ends apparatus for demonstrating and the control device in rack side is set；Driving device be used for drive apparatus for demonstrating accelerate or accelerates decline, to generate overweight or state of weightlessness；The opening and closing that control device is used to control the driving device and the adjustment to acceleration；The coiling idler wheel and at least two pulley assemblies that driving device includes progressive motor, is set on progressive motor output shaft are arranged with driving drawstring on coiling idler wheel, the both ends of drawstring are driven to be connect across pulley assembly with apparatus for demonstrating.The present invention drives two different demonstration buckets using same driving drawstring, make two demonstration buckets upward acceleration having the same and downward acceleration, so as to preferably observe the demonstrating effect for comparing two demonstration buckets, deepen to overweight, weightless understanding, teaching demonstration effect is preferable.
Description
Technical field
The invention belongs to physics teaching experiment demonstration equipments, and in particular to a kind of overweight, weightlessness apparatus for demonstrating.
Background technology
Currently, in physics teaching, student is unable to profound understanding, traditional overweight, mistake to overweight, the weightlessness of object
Weight demonstrator cannot accurately demonstrate overweight, weightlessness and data, and intuitive is bad, this demonstration instrument can it is accurate to student,
Intuitively, overweight, weightlessness and data are dynamically demonstrated.
104376761 A of Chinese invention patent CN disclose a kind of overweight, weightlessness phenomenon demonstration instrument, and instrument four sides is square
Four panels up and down of frame are mutually perpendicular to respectively, and four panels up and down of two small four sides rectangle frame mutually hang down respectively
Directly, counterweight is placed on electronic scale, and two electronic scales are separately fixed at below small four sides rectangle frame on plate, and two small four sides are rectangular
It is connected by three pulleys rope between frame and direct current generator, the direct current generator that direct current generator is 220V with nominal voltage is used
Polarity of voltage change-over switch changes the rotation direction of direct current generator.The patent of invention on electronic scale by placing constant weight
Counterweight, then utilizes direct current generator that electronic scale is driven to accelerate upwards or accelerate downwards, then observes electronic scale and weighs up weight
The quality of code is weighed up with electronic scale when static compared with the quality of counterweight, so that student can clearly realize that, super
Under weight, state of weightlessness, relationship of the object between the pressure and gravity of its supporting surface.
But the patent is only capable of demonstrating solid object under overweight or state of weightlessness, to the pressure change feelings of its supporter
Condition；However, in life, it will usually encounter the case where many fluids are carried, which can not demonstrate well, overweight or
When person's state of weightlessness, pressure condition of the fluid to its container inner wall so that student's indigestion under overweight or state of weightlessness,
For fluid to the situation of change of the active force of chamber wall, demonstrating effect is effective.
Invention content
It is an object of the present invention to provide one kind capable of understanding demonstration under overweight or state of weightlessness, and fluid is to chamber wall
Active force situation of change.
In order to achieve the above objectives, the technical scheme is that like this realizing：
The embodiment provides it is a kind of demonstration Overweight and Zero Gravity state physics teaching experimental device, including rack,
Be arranged the top of rack driving device, be arranged the both ends of rack apparatus for demonstrating and the control in the side of rack is set
Device；Driving device be used for drive apparatus for demonstrating accelerate or accelerates decline, to generate overweight or state of weightlessness；Control
The opening and closing that device is used to control the driving device and the adjustment to acceleration.
Rack includes pedestal, is set to the top of pedestal and be located at the support plate at the both ends of pedestal and is set to support plate
The crossbeam of top；The bottom of support plate is fixedly connected with the upper surface of pedestal, and fixed notch, crossbeam are offered at the top of support plate
It is set in fixed notch；Driving device is set on crossbeam.
In a kind of optional embodiment of the present invention, driving device includes progressive motor, is set to the defeated of progressive motor
Coiling idler wheel on shaft and at least two pulley assemblies；Two pulley assemblies are set to the both ends of crossbeam and are total to coiling idler wheel
Face is arranged, and pulley assembly includes support arm and fixed pulley, and fixed pulley is rotatablely connected with support arm, and driving is arranged on coiling idler wheel
Drawstring drives the both ends of drawstring to be connect across fixed pulley and with apparatus for demonstrating.
In another optional embodiment of the present invention, apparatus for demonstrating includes at least two limit sliding rails and is set to limit
The demonstration bucket being slidably connected in sliding rail and with limit sliding rail；The top for demonstrating bucket is fixedly connected with driving drawstring so that driving is drawn
Rope driving demonstration bucket accelerates；The bottom for demonstrating bucket is equipped with the first opening, demonstrates in bucket, is located at the first opening and is equipped with the
One valve；The side for demonstrating the close driving device of bucket is equipped with several second openings, and several second are open vertically side by side
Setting, demonstrates the inside of bucket, is located at the second opening and is equipped with the second valve.
Further, two limit sliding rails are respectively arranged at the both ends of pedestal, and are located at the underface of two pulley assemblies,
It includes four spacing columns to limit sliding rail, and one end of four spacing columns is fixedly connected with pedestal, and the other end is connect with crossbeam, and four
Root spacing column side close to each other is equipped with fillet, and fillet matches with demonstration bucket, and is slidably connected with the outer wall of demonstration bucket.
In a kind of optional embodiment of the present invention, demonstration bucket is cylindrical structure, including the first demonstration bucket and second
Demonstrate bucket；First demonstration bucket is disposed therein in a limit sliding rail, and the second demonstration bucket is set in another limit sliding rail；It drills
Show that the side of the separate coiling idler wheel of barrel axis and fixed pulley is tangent, the both ends at the top and driving drawstring of demonstrating bucket, which are fixed, to be connected
It connects.
In another optional embodiment of the present invention, the first valve includes the first blocking piece, first piston cylinder and first
Push rod；First blocking piece is arranged in the inside of demonstration bucket, and for blocking the first opening, and first blocks one end of piece and demonstration bucket
Bottom hinge connection, first piston cylinder be arranged demonstration bucket inside, and close to first block piece and demonstration bucket hinge connect
The one end connect, one end of the first push rod and the output axis connection of first piston cylinder, the other end of the first push rod and first block piece
Upper surface rotation connection, the movement of the first push rod makes the first blocking piece open or close the first opening.
Further, the second valve includes the second blocking piece, second piston cylinder and the second push rod；Second, which blocks piece setting, exists
The inside of bucket is demonstrated, and for blocking the second opening, second blocks the inner wall hinge connection of one end and demonstration bucket of piece, and second lives
Plug cylinder is arranged in the inside of demonstration bucket, and close to second block piece and demonstration bucket hinged one end, and the one of the second push rod
The output axis connection at end and second piston cylinder, the other end of the second push rod and second block piece rotation connection, the shifting of the second push rod
It is dynamic to make second to block piece opening or close the second opening.
Further, the top for demonstrating bucket is equipped with air inlet, and air inlet is used to balance the atmospheric pressure inside and outside demonstration bucket.
In a kind of optional embodiment of the present invention, the upper surface of pedestal is equipped with the sink to lower recess, is set in sink
There is discharge outlet；Control device is set on the base, and control device includes PLC controller, timer, signal receiver and display
Screen；PLC controller is connect respectively at driving device and apparatus for demonstrating electric signal, and the operation that controls the driving device and stop with
And the opening and closing of control the first valve and the second valve.
In another optional embodiment of the present invention, the inside for demonstrating bucket is additionally provided with liquid level detection gauge, liquid level detection gauge
It is connect with signal receiver electric signal, and the liquid level information detected is sent to signal receiver, signal receiver and timing
Device electric signal connects, and timer is used to record the time for the liquid level signal that liquid level detection gauge is sent out, timer and display screen telecommunications
Number connection, display screen be used for display timer record time；The height of support plate demonstrates the liquid level in bucket in acceleration enough
The stage of liter drops at liquid level detection gauge, and is detected by liquid level detection gauge.
Further, it is equipped with protective cover close to the side of coiling idler wheel on crossbeam, protective cover is located at the outer of coiling idler wheel
Week.
After adopting the above technical scheme, compared with prior art, the present invention achieving following advantageous effects：
The present invention first demonstrates overweight and state of weightlessness using liquid, by the liquid of equivalent in stationary state and
Overweight or state of weightlessness flows out the required time from the bottom of demonstration bucket, reflects under overweight or state of weightlessness, liquid
Influence suffered by flow regime；Secondly, opening is set in the side wall of demonstration bucket, is flowed out from sidewall opening again by liquid
The variation of time, intuitive to reflect under overweight state or state of weightlessness, liquid is to the pressure changing of container side wall, one side energy
It is the irregular movement due to fluid molecule caused by the shock of chamber wall enough to facilitate the generation of student's fluid pressure, another party
Face can also deepen student for overweight and state of weightlessness understanding, good demonstration effect；Again, in the present invention, using same
The both ends of one driving drawstring connect two different demonstration buckets, are driven with coiling idler wheel so that one of demonstration bucket is accelerating
While rising, another demonstration bucket accelerates to decline with same acceleration, compares two demonstrations so as to easily observe
Liquid level situation of change in bucket, and can also be super by the qualitative comparison of injection situation of the liquid from the opening outflow on side wall
Weight and the weightless influence to fluid stressing conditions, teaching demonstration effect are preferable.
Description of the drawings
Fig. 1 is a kind of overall structure diagram of the physics teaching experimental device of demonstration Overweight and Zero Gravity state of the present invention；
Fig. 2 is that a kind of structure at another visual angle of the physics teaching experimental device of demonstration Overweight and Zero Gravity state of the present invention is shown
It is intended to；
Fig. 3 is that a kind of demonstration bucket internal structure of the physics teaching experimental device of demonstration Overweight and Zero Gravity state of the present invention is shown
It is intended to；
Fig. 4 is a kind of circuit control structure figure of the physics teaching experimental device of demonstration Overweight and Zero Gravity state of the present invention；
In figure：10- racks, 11- pedestals, 12- support plates, 121- fixed notch, 13- crossbeams, 14- sinks, 141- drainings
Mouth, 20- driving devices, 21- progress motor, 22- coilings idler wheel, 23- pulley assemblies, 231- support arms, 232- fixed pulleys, 24-
Drive drawstring, 25- protective covers, 30- apparatus for demonstrating, 31- limit sliding rail, 311- spacing columns, 3110- fillets, 32- demonstration bucket,
The openings of 321- first, the first valves of 322-, 3220- first block piece, 3221- first pistons cylinder, the first push rods of 3222-, 323-
First demonstration bucket, 324- second demonstrate bucket, 325- liquid level detection gauges, 326- air inlets, the openings of 327- second, the second valves of 328-
Door, 3281- second block piece, 3282- second pistons cylinder, the second push rods of 3283-, 40- control devices, 41-PLC controllers, 42-
Timer, 43- signal receivers, 44- display screens.
Specific implementation mode
Description of the invention attached drawing 1 is please referred to, the embodiment provides a kind of objects of demonstration Overweight and Zero Gravity state
Manage experiment device for teaching, including rack 10, be arranged the top of rack 10 driving device 20, be arranged at the both ends of rack 10
Apparatus for demonstrating 30 and the control device 40 in the side of rack 10 is set；Driving device 20 is used to drive the acceleration of apparatus for demonstrating 30
Rise or accelerate to decline, to generate overweight or state of weightlessness；Control device 40 is used to control the driving device 20 unlatching and pass
It closes and the adjustment to acceleration.
Rack 10 includes pedestal 11, is set to the top of pedestal 11 and positioned at the support plate 12 at the both ends of pedestal 11 and setting
Crossbeam 13 in the top of support plate 12；The bottom of support plate 12 is fixedly connected with the upper surface of pedestal 11, the top of support plate 12
Portion offers fixed notch 121, and crossbeam 13 is set in fixed notch 121；Driving device 20 is set on crossbeam 13.
Driving device 20 includes progress motor 21, the coiling idler wheel 22 that is set on the output shaft of progressive motor 21 and at least
Two pulley assemblies 23；Two pulley assemblies 23 are set to the both ends of crossbeam 13 and are coplanar with coiling idler wheel 22, pulley blocks
Part 23 includes support arm 231 and the fixed pulley 232 being set on support arm 231, and fixed pulley 232 is rotatablely connected with support arm 231,
Driving drawstring 24 is arranged on coiling idler wheel 22, the both ends of driving drawstring 24 are connect across fixed pulley 23 and with apparatus for demonstrating 30.
In the present embodiment, driving drawstring 24 is establishment nylon rope, will establishment nylon rope around being located on coiling idler wheel 22,
Utilize progress motor 21 that reel 22 is driven to rotate simultaneously, so that the apparatus for demonstrating 30 for being connected to establishment nylon rope both ends adds
Speed rises or accelerates to decline, and is connected to 30 acceleration having the same of apparatus for demonstrating at establishment nylon rope both ends, can
The preferable relatively influence of overweight state and state of weightlessness to the stressing conditions of object under identical acceleration.
Fig. 1 and Fig. 3 are please referred to, apparatus for demonstrating 30 includes at least two limit sliding rails 31 and is set in limit sliding rail 31 simultaneously
The demonstration bucket 32 being slidably connected with limit sliding rail 31；The top for demonstrating bucket 32 is fixedly connected with driving drawstring 24 so that driving is drawn
24 driving demonstration bucket 32 of rope accelerates；The bottom for demonstrating bucket 32 is equipped with the first opening 321, demonstrates in bucket 32, is located at first
It is open at 321 equipped with the first valve 322.
Referring to Fig.1 and 2, two limit sliding rails 31 are respectively arranged at the both ends of pedestal 10, and it is located at two pulley blocks
The underface of part 23, limit sliding rail 31 include four spacing columns 311, and one end and the pedestal 10 of four spacing columns 311 are fixed
Connection, the other end connect with crossbeam 13, four spacing columns 311 side close to each other equipped with fillet 3110, fillet 3110 and
Demonstration bucket 32 matches, and is slidably connected with the outer wall of demonstration bucket 32.
Demonstration bucket 32 is cylindrical structure, including the first demonstration demonstration bucket 324 of bucket 323 and second；First demonstration bucket 323 is set
It is placed in one in a limit sliding rail 31, the second demonstration bucket 324 is located in another limit sliding rail 31；Demonstrate bucket 32 axis with
The side of the separate coiling idler wheel 22 of fixed pulley 232 is tangent, and the top for demonstrating bucket 32 is fixedly connected with the both ends of driving drawstring 24.
In the present embodiment, the axis for demonstrating bucket 32 is on the one hand arranged to the separate coiling idler wheel with fixed pulley 232
22 side is tangent, after driving drawstring 24 is connect across fixed pulley 232 with demonstration bucket 32, can effectively ensure that driving drawstring 24
It is that can effectively be avoided along weight direction when driving device 20 starts, drives in 30 motion process of apparatus for demonstrating due to driving
The shaking of apparatus for demonstrating 30 caused by the inclination of dynamic drawstring 24, to avoid apparatus for demonstrating 30 from accelerating in non-vertical direction
The situation that degree influences demonstrating effect occurs.
Also, sliding rail 31 in the present embodiment, is limited by setting, in the side close to each other of spacing column 311
Fillet 3110 is set, and fillet 3110 is mutually matched with demonstration bucket 32, and is slidably connected, in this way can be further
The case where avoiding the moment apparatus for demonstrating 30 started in driving device 20 from shaking, to improve to overweight or state of weightlessness
Demonstrating effect, avoid influence of the acceleration on non-vertical direction to demonstrating effect.
Fig. 3 is please referred to, in the present embodiment, the first valve 322 includes the first blocking piece 3220, first piston cylinder 3221
With the first push rod 3222；First blocking piece 3220 is arranged in the inside of demonstration bucket 32, and is used to block the first opening 321, and first
The one end for blocking piece 3220 is connect with the bottom hinge of demonstration bucket 32, and first piston cylinder 3221 is arranged in the inside of demonstration bucket 32,
And close to the first blocking piece 3220 and 32 hinged one end of demonstration bucket, one end and the first piston cylinder of the first push rod 3222
The upper surface of 3221 output axis connection, the other end of the first push rod 3222 and the first blocking piece 3220 is rotatablely connected, and first pushes away
The movement of bar 3222 makes the first blocking piece 3220 open or close the first opening 321.
Referring to Fig.1 and 2, the upper surface of pedestal 10 is additionally provided with the sink 14 to lower recess, draining is equipped in sink 14
Mouth 141；Discharge outlet 141 and laboratory water passage；Control device 40 is arranged on pedestal 10, and control device 40 includes PLC
Controller 41, timer 42, signal receiver 43 and display screen 44；PLC controller 41 is filled with driving device 20 and demonstration respectively
The connection of 30 electric signals is set, and controls the driving device the opening and closing of 20 the first valve 322 of operation and stopping and control.
Fig. 3 and Fig. 4 are please referred to, the inside of demonstration bucket 32 is additionally provided with liquid level detection gauge 325, liquid level detection gauge 325 and signal
43 electric signal of receiver connects, and the liquid level information detected is sent to signal receiver 43, signal receiver 43 and timing
Device 42 connects, and timer 42 is used to record the time for the liquid level signal that liquid level detection gauge 325 is sent out, timer 42 and display screen 44
Electrical connection, display screen 44 are used for the time that display timer 42 records.
It is worth noting that the top of demonstration bucket 32 is additionally provided with air inlet 326, the setting of air inlet 326, which can balance, to be drilled
Show atmospheric pressure inside and outside bucket 32, avoid in presentation process, because demonstration bucket 32 inside and outside atmospheric pressure imbalance, so as to cause up to
Less than expected demonstrating effect.
In the present embodiment, the unlatching that the first opening 321 is controlled by PLC controller 41, can effectively control two
The first opening 321 on a demonstration bucket 32 is opened simultaneously, reduces error；Meanwhile detecting demonstration bucket 32 using liquid level detection gauge 325
Interior liquid level, and the liquid level signal detected is sent to signal receiver 43, when being recorded by timer 42 and display 44
Between information, so as to be clear that, in presentation process, in the demonstration bucket 32 that accelerates the liquid delivery time with accelerate
The time of liquid outflow in the demonstration bucket 32 of decline, and can also be obtained when static the liquid delivery time, it is super to learn
Weight and influence of the state of weightlessness to liquid flowing state.
It is worth noting that in the present embodiment, the height of support plate 12 is sufficient to make the liquid level in demonstration bucket 32 to exist
During demonstration bucket 32 accelerates, liquid level is dropped at liquid level detection gauge 325 and is detected by liquid level detection gauge 325.
In the present embodiment, it is only necessary to ensure that the liquid level in the demonstration bucket 32 to accelerate can be dropped to and be examined by liquid level
Meter 325 is surveyed to detect, the reason is that, in the demonstration bucket 32 for accelerating to decline, liquid is in state of weightlessness, and flow velocity is slower,
Especially when decline acceleration is equal with acceleration of gravity, liquid is in complete agravity state, it is impossible to flow out.Therefore, only
It needs to compare the demonstration bucket 32 and accelerate the time difference existing for the demonstration bucket 32 declined that reduction of speed rises, without absolute sense
Liquid level reaches the time of liquid level detection gauge in the demonstration bucket 32 that place's acceleration declines.
Fig. 1-Fig. 3 is please referred to, in another optional embodiment of the present invention, demonstrates the close driving device 20 of bucket 32
Side is equipped with several second openings 327, and several second openings 327 are vertically arranged side by side, demonstrate the inside of bucket 32, be located at
It is equipped with the second valve 328 at second opening 327.
Second valve, 328 include the second blocking piece 3281, second piston cylinder 3282 and the second push rod 3283；Second blocks piece
3281 are arranged in the inside of demonstration bucket 32, and for blocking the second opening 327, and second blocks one end of piece 327 and demonstration bucket 32
Inner wall hinge connection, second piston cylinder 3282 be arranged demonstration bucket 32 inside, and close to second blocking piece 3281 with drill
Show 32 hinged one end of bucket, one end of the second push rod 3283 and the output axis connection of second piston cylinder 3282, the second push rod
3283 other end and second blocks the rotation connection of piece 3281, and the movement of the second push rod 3283 makes the second blocking piece 3281 open
Or close the second opening 327.
In the present embodiment, PLC controller 41 can also control being turned on and off for the second valve 328.It is worth explanation
, the unlatching of the first valve 322 and the second valve 328 is separately controlled, that is to say, that and when the first valve 322 is opened,
Second valve 328 is closed, and when the second valve 328 is opened, the first valve 322 is closed.
In the present embodiment, the side wall in demonstration bucket 32 is arranged in the second opening 327, when driving device 20 starts,
The liquid level in demonstration bucket 32 is detected by liquid level detection gauge 325, and reflects that the liquid level in demonstration bucket 32 declines by timer 42
Speed can effectively demonstrate the pressure change situation of under overweight or state of weightlessness fluid to chamber wall, to keep student clear
Chu recognizes fluid to the pressure of chamber wall with overweight or weightless situation of change.
Fig. 1-Fig. 2 is please referred to, in another optional embodiment of the present invention, close to the one of coiling idler wheel 22 on crossbeam 13
Side is equipped with protective cover 25, and protective cover 25 is located at the periphery of coiling idler wheel 22.In the present embodiment, protective cover 25 is arranged
On the one hand the periphery of coiling idler wheel 22 can effectively avoid dust stratification on coiling idler wheel 22, not suitable enough so as to cause driving drawstring 24
It is sliding, situation of causing danger in presentation process, safety on the other hand can be avoided preferable.
Claims (9)
1. a kind of physics teaching experimental device of demonstration Overweight and Zero Gravity state, which is characterized in that including rack (10), be arranged in machine
Driving device (20), setting above frame (10) are in the apparatus for demonstrating (30) at rack (10) both ends and setting in rack (10) side
Control device (40)；Driving device (20) be used for drive apparatus for demonstrating (30) accelerate or accelerates decline, to generate
Overweight or state of weightlessness；Control device (40) is used to control the driving device the opening and closing of (20) and the tune to acceleration
It is whole；
Rack (10) includes pedestal (11), is set to pedestal (11) top and is located at the support plate (12) at pedestal (11) both ends and sets
The crossbeam (13) being placed in above support plate (12)；The bottom of support plate (12) is fixedly connected with the upper surface of pedestal (11), support
Fixed notch (121) is offered at the top of plate (12), crossbeam (13) is set in fixed notch (121)；Driving device (20) is set
It is placed on crossbeam (13).
2. the physics teaching experimental device of demonstration Overweight and Zero Gravity state according to claim 1, which is characterized in that driving dress
It includes progress motor (21), the coiling idler wheel (22) being set on the output shaft of progressive motor (21) and at least two cunnings to set (20)
Wheel assembly (23)；Two pulley assemblies (23) are set to the both ends of crossbeam (13) and are coplanar with coiling idler wheel (22), pulley
Component (23) includes support arm (231) and fixed pulley (232), and fixed pulley (232) is rotatablely connected with support arm (231), coiling rolling
Wheel (22) on be arranged with driving drawstring (24), driving drawstring (24) both ends across fixed pulley (232) and with apparatus for demonstrating (30)
Connection.
3. the physics teaching experimental device of demonstration Overweight and Zero Gravity state according to claim 2, which is characterized in that demonstration dress
(30) are set to include at least two limit sliding rails (31) and be set in limit sliding rail (31) and be slidably connected with limit sliding rail (31)
Demonstration bucket (32)；The top of demonstration bucket (32) is fixedly connected with driving drawstring (24) so that driving drawstring (24) drives demonstration
Bucket (32) accelerates；The bottom for demonstrating bucket (32) is equipped with the first opening (321), and demonstration bucket (32) is interior, is located at the first opening
(321) the first valve (322) is equipped at；The side for demonstrating the close driving device (20) of bucket (32) is equipped with several second openings
(327), several second openings (327) are vertically arranged side by side, and the inside of demonstration bucket (32) is located at the second opening (327)
Place is equipped with the second valve (328).
4. the physics teaching experimental device of demonstration Overweight and Zero Gravity state according to claim 3, which is characterized in that two limits
Position sliding rail (31) is respectively arranged at the both ends of pedestal (10), and positioned at the underface of two pulley assemblies (23), limits sliding rail
(31) include four spacing columns (311), one end of four spacing columns (311) is fixedly connected with pedestal (10), the other end and
Crossbeam (13) connects, and four spacing columns (311) side close to each other is equipped with fillet (3110), fillet (3110) and demonstration bucket
(32) match, and be slidably connected with the outer wall of demonstration bucket (32).
5. according to the physics teaching experimental device of 3 demonstration Overweight and Zero Gravity state described in claim, which is characterized in that demonstration bucket
(32) it is cylindrical structure, including the first demonstration bucket (323) and the second demonstration bucket (324)；First demonstration bucket (323) is set to it
In in limit sliding rail (31), the second demonstration bucket (324) is set in another limit sliding rail (31)；Demonstrate bucket (32) axis
It is tangent with the side of the separate coiling idler wheel (22) of fixed pulley (232), the top of demonstration bucket (32) and the two of driving drawstring (24)
End is fixedly connected.
6. the physics teaching experimental device of demonstration Overweight and Zero Gravity state according to claim 3, which is characterized in that the first valve
Door (322) includes the first blocking piece (3220), first piston cylinder (3221) and the first push rod (3222)；First blocks piece (3220)
It is arranged in the inside of demonstration bucket (32), and for blocking the first opening (321), first blocks one end of piece (3220) and demonstration bucket
(32) bottom hinge connection, first piston cylinder (3221) setting block piece in the inside of demonstration bucket (32), and close to first
(3220) with demonstration bucket (32) hinged one end, one end of the first push rod (3222) is defeated with first piston cylinder (3221)
Go out axis connection, the upper surface that the other end of the first push rod (3222) and first block piece (3220) is rotatablely connected, the first push rod
(3222) movement makes the first blocking piece (3220) open or close the first opening (321)；
Second valve (328) includes the second blocking piece (3281), second piston cylinder (3282) and the second push rod (3283)；Second is stifled
In the inside of demonstration bucket (32), and for blocking the second opening (327), second blocks the one of piece (3281) for patch (3281) setting
The inner wall hinge connection at end and demonstration bucket (32), second piston cylinder (3282) setting is in the inside of demonstration bucket (32), and close to the
Two block pieces (3281) with demonstration bucket (32) hinged one end, one end of the second push rod (3823) and second piston cylinder
(3282) output axis connection, the other end of the second push rod (3282) and second block piece (3281) rotation connection, the second push rod
(3283) movement makes the second blocking piece (3281) open or close the second opening (327)；
The top for demonstrating bucket (32) is equipped with air inlet (326), and air inlet (326) is used to balance the atmospheric pressure inside and outside demonstration bucket (32)
Power.
7. demonstrating the physics teaching experimental device of Overweight and Zero Gravity state according to claim 3-6 any one of them, feature exists
In the upper surface of pedestal (11) is equipped with the sink (14) to lower recess, and discharge outlet (141) is equipped in sink (14)；Control device
(40) it is arranged on pedestal (11), control device (40) includes PLC controller (41), timer (42), signal receiver (43)
With display screen (44)；PLC controller (41) is connect respectively at driving device (20) and apparatus for demonstrating (30) electric signal, and is controlled
The operation and stopping of driving device (20) and the opening and closing of the first valve of control (321) and the second valve (328).
8. the physics teaching experimental device of demonstration Overweight and Zero Gravity state according to claim 7, which is characterized in that demonstration bucket
(32) internal to be additionally provided with liquid level detection gauge (325), liquid level detection gauge (325) is connect with signal receiver (43) electric signal, and will
The liquid level information detected is sent to signal receiver (43), and signal receiver (43) is connect with timer (42) electric signal, meter
When device (42) be used to record time of the liquid level signal that liquid level detection gauge (325) is sent out, timer (42) and display screen (44) electricity
Signal connects, and display screen (44) is used for the time of display timer (42) record；The height of support plate (12) demonstrates bucket enough
(32) liquid level in drops in the stage of accelerating at liquid level detection gauge (325), and is detected by liquid level detection gauge (325).
9. demonstrating the physics teaching experimental device of Overweight and Zero Gravity state according to claim 1-6 any one of them, feature exists
In close to the side of coiling idler wheel (22) equipped with protective cover (25) on crossbeam (13), protective cover (25) is located at coiling idler wheel
(22) periphery.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112046799A (en) * | 2020-07-20 | 2020-12-08 | 中国人民解放军63919部队 | Weightlessness-simulated dry-leaching device |
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| CN102446441A (en) * | 2010-10-08 | 2012-05-09 | 蒋建全 | Overweight and weightlessness experiment instrument |
| CN206021686U (en) * | 2016-07-28 | 2017-03-15 | 王娅如 | A kind of physics dynamic Overweight and Zero Gravity demonstration device |
| CN206115806U (en) * | 2016-07-21 | 2017-04-19 | 薛凯文 | Demonstrate device of overweight weightless physical experiment |
| CN206224866U (en) * | 2016-09-23 | 2017-06-06 | 陈思卓 | A kind of Overweight and Zero Gravity apparatus for demonstrating |
| CN206628159U (en) * | 2017-04-10 | 2017-11-10 | 常州信息职业技术学院 | New Overweight and Zero Gravity experiment device for teaching |
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2018
- 2018-03-27 CN CN201810255817.1A patent/CN108447358B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102446441A (en) * | 2010-10-08 | 2012-05-09 | 蒋建全 | Overweight and weightlessness experiment instrument |
| CN206115806U (en) * | 2016-07-21 | 2017-04-19 | 薛凯文 | Demonstrate device of overweight weightless physical experiment |
| CN206021686U (en) * | 2016-07-28 | 2017-03-15 | 王娅如 | A kind of physics dynamic Overweight and Zero Gravity demonstration device |
| CN206224866U (en) * | 2016-09-23 | 2017-06-06 | 陈思卓 | A kind of Overweight and Zero Gravity apparatus for demonstrating |
| CN206628159U (en) * | 2017-04-10 | 2017-11-10 | 常州信息职业技术学院 | New Overweight and Zero Gravity experiment device for teaching |
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| CN112046799A (en) * | 2020-07-20 | 2020-12-08 | 中国人民解放军63919部队 | Weightlessness-simulated dry-leaching device |
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