CN107657875B - A kind of physics teaching is expanded with heat and contract with cold experimental facilities with air - Google Patents
A kind of physics teaching is expanded with heat and contract with cold experimental facilities with air Download PDFInfo
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- CN107657875B CN107657875B CN201711148041.5A CN201711148041A CN107657875B CN 107657875 B CN107657875 B CN 107657875B CN 201711148041 A CN201711148041 A CN 201711148041A CN 107657875 B CN107657875 B CN 107657875B
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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
- G09B23/16—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for science of heat
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Abstract
The present invention relates to a kind of experimental facilities more particularly to a kind of physics teachings to be expanded with heat and contract with cold experimental facilities with air.Physics teaching obvious, easy to operate that the technical problem to be solved in the present invention is to provide a kind of experimental results is expanded with heat and contract with cold experimental facilities with air.In order to solve the above-mentioned technical problems, the present invention provides such a physics teachings to be expanded with heat and contract with cold experimental facilities with air, includes mounting rack, the first sliding rail, the first sliding block, alcolhol burner, the first block, first spring etc.；Bottom right is embedded with the first sliding rail in mounting rack, and slidingtype is connected with the first sliding block on the first sliding rail, and the first slider top is equipped with alcolhol burner, and bottom right is equipped with the first block in mounting rack, and the first block is on the right side of the first sliding rail.Effect obvious, easy to operate that invention achieves experimental results, the present invention is because the space on bottle top is small, and after gas expansion, the distance that piston rises is big, can allow student and the more intuitive expansion seen after gas heating of teacher.
Description
Technical field
The present invention relates to a kind of experimental facilities more particularly to a kind of physics teachings to be expanded with heat and contract with cold experimental facilities with air.
Background technique
Physics be study the most basic structure of the material world, most common interaction, the characteristics of motion most typically and
The natural science of used laboratory facilities and method of thinking.In the modern times, physics has become most basic in natural science
One of subject.Law of physics by a large amount of stringent experimental verifications is referred to as law of physics.However as other are very much
Theory of natural science is the same, these laws cannot be proved to, and correctness can only be examined by experiment repeatedly.In physics
Some phenomenons, needs prove that air, which has, to expand with heat and contract with cold with experiment;Light listens teacher to say, will not understand, needs
It is but current for proving the experimental facilities to expand with heat and contract with cold by the proof of experiment because air expand will not be very
Obviously, cause experimental result unobvious, be thus unfavorable for teaching.
To sum up, it needs to research and develop a kind of experimental result is obvious, easy to operate physics teaching at present to be expanded with heat and contract with cold reality with air
Equipment is tested, to overcome the disadvantage that experimental result is unobvious, complicated for operation in the prior art.
Summary of the invention
(1) technical problems to be solved
The present invention in order to overcome the disadvantage that experimental result is unobvious, complicated for operation in the prior art, the invention solves
Technical problem is to provide a kind of experimental result is obvious, easy to operate physics teaching and is expanded with heat and contract with cold experimental facilities with air.
(2) technical solution
In order to solve the above-mentioned technical problems, the present invention provides such a physics teachings to be set with air experiment of expanding with heat and contract with cold
It is standby, include mounting rack, the first sliding rail, the first sliding block, alcolhol burner, the first block, the first spring, the first fixed pulley, connecting rod,
Second sliding block, the second sliding rail, the second block, push rod, bottle, the first bracing wire, the second fixed pulley, third sliding rail, third sliding block, work
Plug and the second bracing wire, bottom right is embedded with the first sliding rail in mounting rack, and slidingtype is connected with the first sliding block on the first sliding rail, and first
Slider top is equipped with alcolhol burner, and bottom right is equipped with the first block in mounting rack, and the first block is on the right side of the first sliding rail, first gear
The first spring is connected between block and the first sliding block, mounting rack left arm lower part and middle part are provided with first through hole, mounting rack left arm
Left lower is symmetrical above and below to be equipped with the first fixed pulley, is provided with pilot hole in the middle part of mounting rack left arm, pilot hole above first through hole,
Mounting rack left arm right upper portion is equipped with connecting rod, and connecting rod bottom right is equipped with the second sliding block, slidingtype connection on the second sliding block
There is the second sliding rail, the second sliding rail left end is connected with push rod, and push rod passes through pilot hole, and the second sliding rail top right side is equipped with second gear
Block, for the second block on the right side of the second sliding block, the second sliding rail right end is connected with bottle, and bottle left lower is connected with the first bracing wire,
First is drawstring through the first through hole on top, bypasses two the first fixed pulleys, the first through hole across lower part, and right end is connected to the
On the left of one sliding block, mounting rack inner top bilateral symmetry is equipped with the second fixed pulley, and third sliding rail is equipped on the left of mounting rack inner top, the
Slidingtype is connected with third sliding block on three sliding rails, and scale is carved on third sliding rail, and bottle internal upper part is equipped with piston, piston and bottle
Cooperation, top land center are connected with the second bracing wire, and the second bracing wire bypasses two the second fixed pulleys, and bottom end is connected to third sliding block
Top.
It preferably, further include having height adjustment device, the first slider top is equipped with height adjustment device, height adjustment device
It is equipped with alcolhol burner, height adjustment device includes placing frame, second spring, placement plate, bolt and wing nut, the first sliding block
Top is equipped with placing frame, and two wall top of placing frame or so is provided with sliding slot, and bottom bilateral symmetry is equipped with second spring in placing frame,
Second spring top is connected with placement plate, and alcolhol burner is arranged in placement plate, is equipped with bolt at left and right sides of placement plate, bolt is worn
Sliding slot is crossed, the mode that outside is connected through a screw thread is connected with wing nut, and wing nut and bolt cooperate the position of placement plate
It sets and fixes.
Preferably, further include having inserted link, the second through-hole is symmetrically provided in placement plate, alcolhol burner is placed on placement plate top
Portion, alcolhol burner bottom bilateral symmetry are equipped with inserted link, and inserted link passes through the second through-hole.
It preferably, further include having work-saving device, mounting rack left arm left upper portion is equipped with work-saving device, and work-saving device includes
Strut, motor, cam, baffle, third spring and guide sleeve, mounting rack left arm left upper portion are equipped with strut, are equipped on strut
Motor is connected with cam on the output shaft on front side of motor, and push rod top left side is equipped with baffle, and baffle right side central and mounting rack are left
Third spring is connected between arm left upper portion, connecting rod bottom left is equipped with guide sleeve, and push rod passes through guide sleeve.
It preferably, further include having plug, connecting rod right part and the second sliding rail left part are provided with jack, are inserted in jack slotting
Bolt.
Working principle: when teacher needs to carry out the experiment of air expanded with heat and contract with cold using the equipment, teacher is by alcolhol burner
It lights, then teacher or student push to the right push rod, and drive the second sliding rail to move right, and then bottle is driven to move right,
Bottle, which moves right, drives the first sliding block to be moved to the left, and the first spring is stretched, while the first sliding block is moved to the left drive alcohol
Lamp is moved to the left, and alcolhol burner is moved to the left, and bottle moves right, so that the available uniform heating in the bottom of bottle.Work as wine
When smart lamp is close on the left of bottle, push rod is unclamped, the first spring restores to the original state, and drives the first sliding block to move right, and then drive wine
Smart lamp moves right, and the first sliding block moves right pulls bottle to be moved to the left by the first bracing wire, when bottle is moved to the left reset
Afterwards, it pushes push rod to move right again, repeatedly, the gas in bottle is heated.Gas in bottle is heated
Afterwards, volume becomes larger, and pushes piston to move up, so that third sliding block moves down, teacher extinguishes alcolhol burner after experiment.
Bottle is pushed back into initial position at this time, the second block plays the role of conveniently finding bottle initial position.Academics and students see at this time
The distance that third sliding block moves down is examined, and the scale on third sliding block can allow student and teacher to recognize that gas is swollen in bottle
Swollen volume.Because the space on bottle top is small, after gas expansion, piston rise distance it is big, can allow student and teacher more
Add the expansion after intuitively seeing gas heating.
Because further including having height adjustment device, the first slider top is equipped with height adjustment device, on height adjustment device
Equipped with alcolhol burner, height adjustment device includes placing frame, second spring, placement plate, bolt and wing nut, the first sliding block top
Portion is equipped with placing frame, and two wall top of placing frame or so is provided with sliding slot, and bottom bilateral symmetry is equipped with second spring in placing frame, the
Two spring tops are connected with placement plate, and alcolhol burner is arranged in placement plate, are equipped with bolt at left and right sides of placement plate, bolt passes through
Sliding slot, the mode that outside is connected through a screw thread are connected with wing nut, and wing nut and bolt cooperate the position of placement plate
It fixes.When needing to accelerate the heating speed of bottle, teacher can unscrew the wing nut of two sides, pull put then up
Set plate, second spring is stretched, placement plate drive alcolhol burner move up, alcolhol burner moves up so that flame closer to
Bottle, heating speed faster, when alcolhol burner is moved upwards up to the position of needs, again tighten the wing nut of two sides, lead to
It crosses wing nut again to fix the position of placement plate with bolt cooperation, so that the position of alcolhol burner is fixed.When needs subtract
When the heating speed of slow bottle, teacher can unscrew the wing nut of two sides, then press placement plate, second spring quilt downwards
Compression, placement plate drive alcolhol burner to move down, and alcolhol burner moves down, so that flame is far from bottle, heating speed is slack-off, when
When alcolhol burner is moved down into the position of needs, the wing nut of two sides is tightened again, is cooperated by wing nut and bolt
The position of placement plate is fixed again, so that the position of alcolhol burner is fixed.Bottle is controlled by adjusting the height of alcolhol burner
The speed of sub- heating speed can be convenient the progress of experiment.
Because further including having inserted link, the second through-hole is symmetrically provided in placement plate, alcolhol burner is placed at the top of placement plate,
Alcolhol burner bottom bilateral symmetry is equipped with inserted link, and inserted link passes through the second through-hole.Alcolhol burner can be removed when needed, inserted link
The effect for fixing alcolhol burner is combined with the second through-hole.
Because further including having work-saving device, mounting rack left arm left upper portion is equipped with work-saving device, and work-saving device includes branch
Bar, motor, cam, baffle, third spring and guide sleeve, mounting rack left arm left upper portion are equipped with strut, are equipped with electricity on strut
Machine is connected with cam on the output shaft on front side of motor, and push rod top left side is equipped with baffle, baffle right side central and mounting rack left arm
Third spring is connected between left upper portion, connecting rod bottom left is equipped with guide sleeve, and push rod passes through guide sleeve.When nobody pushes away
When dynamic push rod, experimenter controls motor and rotates counterclockwise, and band moving cam rotates counterclockwise, and when cam is contacted with baffle, pushes
Baffle moves right, and push rod is driven to move right, and third spring is compressed, after cam distalmost end leaves baffle, third spring
It restores to the original state, baffle is driven to be moved to the left resets, and then drive baffle moves right reset.Repeatedly, there is no need to people to come
It pushes push rod experiment can also go on even if a people is testing, is provided convenience to be experimenter, experiment terminates
Afterwards, control motor stops working.Promising second sliding block of guide sleeve shares the effect of gravity.
Because further including having plug, connecting rod right part and the second sliding rail left part are provided with jack, are inserted with plug in jack.In
When experiment starts, plug is extracted out of jack, in observation experiment result, plug is turned back in jack, can so be prevented
Because of the movement of bottle, the case where influencing experimental result generation.
Control mode of the invention is automatically controlled by controller, the skill that the control circuit of controller passes through this field
Art personnel's simple programming can be realized, and belong to the common knowledge of this field, and the present invention is mainly used to protect mechanical device, institute
Control mode and circuit connection are not explained with the present invention.
(3) beneficial effect
Effect obvious, easy to operate that invention achieves experimental results, the present invention is because the space on bottle top is small, gas
Body expansion after, piston rise distance it is big, can allow student and teacher it is more intuitive see gas heating after expansion, pass through
The height of alcolhol burner is adjusted to control the speed of bottle heating speed, can be convenient the progress of experiment, by work-saving device, even if
One people is testing, and experiment can also be gone on, and provides convenience to be experimenter.
Detailed description of the invention
Fig. 1 is schematic view of the front view of the invention.
Fig. 2 is the first schematic view of the front view of height adjustment device of the present invention.
Fig. 3 is second of schematic view of the front view of height adjustment device of the present invention.
Fig. 4 is the first part schematic view of the front view of the invention.
Fig. 5 is second of part schematic view of the front view of the invention.
The label in accompanying drawing is: 1- mounting rack, the first sliding rail of 2-, the first sliding block of 3-, 4- alcolhol burner, the first block of 5-, 6-
First spring, 7- first through hole, the first fixed pulley of 8-, 9- connecting rod, the second sliding block of 10-, the second sliding rail of 11-, 12- second gear
Block, 13- pilot hole, 14- push rod, 15- bottle, the first bracing wire of 16-, the second fixed pulley of 17-, 18- third sliding rail, 19- third are sliding
Block, 20- scale, 21- piston, the second bracing wire of 22-, 23- height adjustment device, 231- placing frame, 232- sliding slot, the second bullet of 233-
Spring, 234- placement plate, 235- bolt, 236- wing nut, the second through-hole of 24-, 25- inserted link, 26- work-saving device, 261- strut,
262- motor, 263- cam, 264- baffle, 265- third spring, 266- guide sleeve, 27- jack, 28- plug.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
Embodiment 1
A kind of physics teaching includes as shown in Figs. 1-5 mounting rack 1, the first sliding rail with the air experimental facilities that expands with heat and contract with cold
2, the first sliding block 3, alcolhol burner 4, the first block 5, the first spring 6, the first fixed pulley 8, connecting rod 9, the second sliding block 10, second are sliding
Rail 11, the second block 12, push rod 14, bottle 15, the first bracing wire 16, the second fixed pulley 17, third sliding rail 18, third sliding block 19,
Piston 21 and the second bracing wire 22, bottom right is embedded with the first sliding rail 2 in mounting rack 1, and slidingtype is connected with first on the first sliding rail 2
Sliding block 3 is equipped with alcolhol burner 4 at the top of first sliding block 3, and bottom right is equipped with the first block 5 in mounting rack 1, and the first block 5 is first
2 right side of sliding rail, is connected with the first spring 6,1 left arm lower part of mounting rack and middle part are provided between the first block 5 and the first sliding block 3
First through hole 7,1 left arm left lower of mounting rack is symmetrical above and below to be equipped with the first fixed pulley 8, is provided with guiding in the middle part of 1 left arm of mounting rack
Hole 13, for pilot hole 13 above first through hole 7,1 left arm right upper portion of mounting rack is equipped with connecting rod 9, and 9 bottom right of connecting rod is set
There is the second sliding block 10, slidingtype is connected with the second sliding rail 11 on the second sliding block 10, and 11 left end of the second sliding rail is connected with push rod 14, pushes away
Bar 14 passes through pilot hole 13, and 11 top right side of the second sliding rail is equipped with the second block 12, the second block 12 on the right side of the second sliding block 10,
Second sliding rail, 11 right end is connected with bottle 15, and 15 left lower of bottle is connected with the first bracing wire 16, and the first bracing wire 16 passes through top
First through hole 7, bypass two the first fixed pulleys 8, the first through hole 7 across lower part, right end is connected to the left side of the first sliding block 3,
Mounting rack 1 inner top bilateral symmetry is equipped with the second fixed pulley 17, and third sliding rail 18 is equipped on the left of 1 inner top of mounting rack, and third is sliding
Slidingtype is connected with third sliding block 19 on rail 18, scale 20 is carved on third sliding rail 18,15 internal upper part of bottle is equipped with piston 21, living
Plug 21 cooperates with bottle 15, and 21 top center of piston is connected with the second bracing wire 22, and the second bracing wire 22 bypasses two the second fixed pulleys
17, bottom end is connected to 19 top of third sliding block.
Embodiment 2
A kind of physics teaching includes as shown in Figs. 1-5 mounting rack 1, the first sliding rail with the air experimental facilities that expands with heat and contract with cold
2, the first sliding block 3, alcolhol burner 4, the first block 5, the first spring 6, the first fixed pulley 8, connecting rod 9, the second sliding block 10, second are sliding
Rail 11, the second block 12, push rod 14, bottle 15, the first bracing wire 16, the second fixed pulley 17, third sliding rail 18, third sliding block 19,
Piston 21 and the second bracing wire 22, bottom right is embedded with the first sliding rail 2 in mounting rack 1, and slidingtype is connected with first on the first sliding rail 2
Sliding block 3 is equipped with alcolhol burner 4 at the top of first sliding block 3, and bottom right is equipped with the first block 5 in mounting rack 1, and the first block 5 is first
2 right side of sliding rail, is connected with the first spring 6,1 left arm lower part of mounting rack and middle part are provided between the first block 5 and the first sliding block 3
First through hole 7,1 left arm left lower of mounting rack is symmetrical above and below to be equipped with the first fixed pulley 8, is provided with guiding in the middle part of 1 left arm of mounting rack
Hole 13, for pilot hole 13 above first through hole 7,1 left arm right upper portion of mounting rack is equipped with connecting rod 9, and 9 bottom right of connecting rod is set
There is the second sliding block 10, slidingtype is connected with the second sliding rail 11 on the second sliding block 10, and 11 left end of the second sliding rail is connected with push rod 14, pushes away
Bar 14 passes through pilot hole 13, and 11 top right side of the second sliding rail is equipped with the second block 12, the second block 12 on the right side of the second sliding block 10,
Second sliding rail, 11 right end is connected with bottle 15, and 15 left lower of bottle is connected with the first bracing wire 16, and the first bracing wire 16 passes through top
First through hole 7, bypass two the first fixed pulleys 8, the first through hole 7 across lower part, right end is connected to the left side of the first sliding block 3,
Mounting rack 1 inner top bilateral symmetry is equipped with the second fixed pulley 17, and third sliding rail 18 is equipped on the left of 1 inner top of mounting rack, and third is sliding
Slidingtype is connected with third sliding block 19 on rail 18, scale 20 is carved on third sliding rail 18,15 internal upper part of bottle is equipped with piston 21, living
Plug 21 cooperates with bottle 15, and 21 top center of piston is connected with the second bracing wire 22, and the second bracing wire 22 bypasses two the second fixed pulleys
17, bottom end is connected to 19 top of third sliding block.
Further include having height adjustment device 23, height adjustment device 23, height adjustment device 23 are equipped at the top of the first sliding block 3
It is equipped with alcolhol burner 4, height adjustment device 23 includes placing frame 231, second spring 233, placement plate 234, bolt 235 and butterfly
Shape nut 236 is equipped with placing frame 231 at the top of first sliding block 3, and 231 or so two wall top of placing frame is provided with sliding slot 232, places
Bottom bilateral symmetry is equipped with second spring 233 in frame 231, and 233 top of second spring is connected with placement plate 234, and alcolhol burner 4 is arranged
In placement plate 234, bolt 235 is equipped at left and right sides of placement plate 234, bolt 235 passes through sliding slot 232, and outside passes through spiral shell
The mode of line connection is connected with wing nut 236, and wing nut 236 cooperates with bolt 235 fixes the position of placement plate 234
Firmly.
Embodiment 3
A kind of physics teaching includes as shown in Figs. 1-5 mounting rack 1, the first sliding rail with the air experimental facilities that expands with heat and contract with cold
2, the first sliding block 3, alcolhol burner 4, the first block 5, the first spring 6, the first fixed pulley 8, connecting rod 9, the second sliding block 10, second are sliding
Rail 11, the second block 12, push rod 14, bottle 15, the first bracing wire 16, the second fixed pulley 17, third sliding rail 18, third sliding block 19,
Piston 21 and the second bracing wire 22, bottom right is embedded with the first sliding rail 2 in mounting rack 1, and slidingtype is connected with first on the first sliding rail 2
Sliding block 3 is equipped with alcolhol burner 4 at the top of first sliding block 3, and bottom right is equipped with the first block 5 in mounting rack 1, and the first block 5 is first
2 right side of sliding rail, is connected with the first spring 6,1 left arm lower part of mounting rack and middle part are provided between the first block 5 and the first sliding block 3
First through hole 7,1 left arm left lower of mounting rack is symmetrical above and below to be equipped with the first fixed pulley 8, is provided with guiding in the middle part of 1 left arm of mounting rack
Hole 13, for pilot hole 13 above first through hole 7,1 left arm right upper portion of mounting rack is equipped with connecting rod 9, and 9 bottom right of connecting rod is set
There is the second sliding block 10, slidingtype is connected with the second sliding rail 11 on the second sliding block 10, and 11 left end of the second sliding rail is connected with push rod 14, pushes away
Bar 14 passes through pilot hole 13, and 11 top right side of the second sliding rail is equipped with the second block 12, the second block 12 on the right side of the second sliding block 10,
Second sliding rail, 11 right end is connected with bottle 15, and 15 left lower of bottle is connected with the first bracing wire 16, and the first bracing wire 16 passes through top
First through hole 7, bypass two the first fixed pulleys 8, the first through hole 7 across lower part, right end is connected to the left side of the first sliding block 3,
Mounting rack 1 inner top bilateral symmetry is equipped with the second fixed pulley 17, and third sliding rail 18 is equipped on the left of 1 inner top of mounting rack, and third is sliding
Slidingtype is connected with third sliding block 19 on rail 18, scale 20 is carved on third sliding rail 18,15 internal upper part of bottle is equipped with piston 21, living
Plug 21 cooperates with bottle 15, and 21 top center of piston is connected with the second bracing wire 22, and the second bracing wire 22 bypasses two the second fixed pulleys
17, bottom end is connected to 19 top of third sliding block.
Further include having height adjustment device 23, height adjustment device 23, height adjustment device 23 are equipped at the top of the first sliding block 3
It is equipped with alcolhol burner 4, height adjustment device 23 includes placing frame 231, second spring 233, placement plate 234, bolt 235 and butterfly
Shape nut 236 is equipped with placing frame 231 at the top of first sliding block 3, and 231 or so two wall top of placing frame is provided with sliding slot 232, places
Bottom bilateral symmetry is equipped with second spring 233 in frame 231, and 233 top of second spring is connected with placement plate 234, and alcolhol burner 4 is arranged
In placement plate 234, bolt 235 is equipped at left and right sides of placement plate 234, bolt 235 passes through sliding slot 232, and outside passes through spiral shell
The mode of line connection is connected with wing nut 236, and wing nut 236 cooperates with bolt 235 fixes the position of placement plate 234
Firmly.
Further include having inserted link 25, the second through-hole 24 is symmetrically provided in placement plate 234, alcolhol burner 4 is placed on placement plate
234 tops, 4 bottom of alcolhol burner bilateral symmetry are equipped with inserted link 25, and inserted link 25 passes through the second through-hole 24.
Embodiment 4
A kind of physics teaching includes as shown in Figs. 1-5 mounting rack 1, the first sliding rail with the air experimental facilities that expands with heat and contract with cold
2, the first sliding block 3, alcolhol burner 4, the first block 5, the first spring 6, the first fixed pulley 8, connecting rod 9, the second sliding block 10, second are sliding
Rail 11, the second block 12, push rod 14, bottle 15, the first bracing wire 16, the second fixed pulley 17, third sliding rail 18, third sliding block 19,
Piston 21 and the second bracing wire 22, bottom right is embedded with the first sliding rail 2 in mounting rack 1, and slidingtype is connected with first on the first sliding rail 2
Sliding block 3 is equipped with alcolhol burner 4 at the top of first sliding block 3, and bottom right is equipped with the first block 5 in mounting rack 1, and the first block 5 is first
2 right side of sliding rail, is connected with the first spring 6,1 left arm lower part of mounting rack and middle part are provided between the first block 5 and the first sliding block 3
First through hole 7,1 left arm left lower of mounting rack is symmetrical above and below to be equipped with the first fixed pulley 8, is provided with guiding in the middle part of 1 left arm of mounting rack
Hole 13, for pilot hole 13 above first through hole 7,1 left arm right upper portion of mounting rack is equipped with connecting rod 9, and 9 bottom right of connecting rod is set
There is the second sliding block 10, slidingtype is connected with the second sliding rail 11 on the second sliding block 10, and 11 left end of the second sliding rail is connected with push rod 14, pushes away
Bar 14 passes through pilot hole 13, and 11 top right side of the second sliding rail is equipped with the second block 12, the second block 12 on the right side of the second sliding block 10,
Second sliding rail, 11 right end is connected with bottle 15, and 15 left lower of bottle is connected with the first bracing wire 16, and the first bracing wire 16 passes through top
First through hole 7, bypass two the first fixed pulleys 8, the first through hole 7 across lower part, right end is connected to the left side of the first sliding block 3,
Mounting rack 1 inner top bilateral symmetry is equipped with the second fixed pulley 17, and third sliding rail 18 is equipped on the left of 1 inner top of mounting rack, and third is sliding
Slidingtype is connected with third sliding block 19 on rail 18, scale 20 is carved on third sliding rail 18,15 internal upper part of bottle is equipped with piston 21, living
Plug 21 cooperates with bottle 15, and 21 top center of piston is connected with the second bracing wire 22, and the second bracing wire 22 bypasses two the second fixed pulleys
17, bottom end is connected to 19 top of third sliding block.
Further include having height adjustment device 23, height adjustment device 23, height adjustment device 23 are equipped at the top of the first sliding block 3
It is equipped with alcolhol burner 4, height adjustment device 23 includes placing frame 231, second spring 233, placement plate 234, bolt 235 and butterfly
Shape nut 236 is equipped with placing frame 231 at the top of first sliding block 3, and 231 or so two wall top of placing frame is provided with sliding slot 232, places
Bottom bilateral symmetry is equipped with second spring 233 in frame 231, and 233 top of second spring is connected with placement plate 234, and alcolhol burner 4 is arranged
In placement plate 234, bolt 235 is equipped at left and right sides of placement plate 234, bolt 235 passes through sliding slot 232, and outside passes through spiral shell
The mode of line connection is connected with wing nut 236, and wing nut 236 cooperates with bolt 235 fixes the position of placement plate 234
Firmly.
Further include having inserted link 25, the second through-hole 24 is symmetrically provided in placement plate 234, alcolhol burner 4 is placed on placement plate
234 tops, 4 bottom of alcolhol burner bilateral symmetry are equipped with inserted link 25, and inserted link 25 passes through the second through-hole 24.
It further include having work-saving device 26,1 left arm left upper portion of mounting rack is equipped with work-saving device 26, and work-saving device 26 includes
Strut 261, motor 262, cam 263, baffle 264, third spring 265 and guide sleeve 266,1 left arm left upper portion of mounting rack are set
There is strut 261, motor 262 is installed on strut 261, is connected with cam 263 on the output shaft of 262 front side of motor, push rod 14 pushes up
It is equipped with baffle 264 on the left of portion, is connected with third spring 265 between 1 left arm left upper portion of 264 right side central of baffle and mounting rack,
9 bottom left of connecting rod is equipped with guide sleeve 266, and push rod 14 passes through guide sleeve 266.
It further include having plug 28,9 right part of connecting rod and 11 left part of the second sliding rail are provided with jack 27, are inserted in jack 27 slotting
Bolt 28.
Working principle: when teacher needs to carry out the experiment of air expanded with heat and contract with cold using the equipment, teacher is by alcolhol burner 4
It lights, then teacher or student push to the right push rod 14, drive the second sliding rail 11 to move right, and then drive bottle 15 to the right
Mobile, bottle 15, which moves right, drives the first sliding block 3 to be moved to the left, and the first spring 6 is stretched, while the first sliding block 3 is to moving to left
Dynamic that alcolhol burner 4 is driven to be moved to the left, alcolhol burner 4 is moved to the left, and bottle 15 moves right, so that the bottom of bottle 15 is available
Uniform heating.When alcolhol burner 4 is close to 15 left side of bottle, push rod 14 is unclamped, the first spring 6 restores to the original state, and drives first sliding
Block 3 moves right, and then alcolhol burner 4 is driven to move right, and the first sliding block 3, which moves right, pulls bottle 15 by the first bracing wire 16
It is moved to the left, after bottle 15 is moved to the left reset, pushes push rod 14 to move right again, repeatedly, in bottle 15
Gas is heated.After gas in bottle 15 obtains heating, volume becomes larger, and piston 21 is pushed to move up, so that third is sliding
Block 19 moves down, and teacher extinguishes alcolhol burner 4 after experiment.Bottle 15 is pushed back into initial position, the second block 12 at this time
Play the role of conveniently finding 15 initial position of bottle.Academics and students observe the distance that third sliding block 19 moves down at this time, and
Scale 20 on third sliding block 19 can allow student and teacher to recognize the volume of gas expansion in bottle 15.Because on bottle 15
The space in portion is small, and after gas expansion, the distance that piston 21 rises is big, can allow student and teacher is more intuitive sees that gas adds
Expansion after heat.
Because further including having height adjustment device 23, height adjustment device 23, height adjustment dress are equipped at the top of the first sliding block 3
It sets 23 and is equipped with alcolhol burner 4, height adjustment device 23 includes placing frame 231, second spring 233, placement plate 234, bolt 235
With wing nut 236, placing frame 231 is equipped at the top of the first sliding block 3,231 or so two wall top of placing frame is provided with sliding slot 232,
Bottom bilateral symmetry is equipped with second spring 233 in placing frame 231, and 233 top of second spring is connected with placement plate 234, alcolhol burner 4
It is arranged in placement plate 234, bolt 235 is equipped at left and right sides of placement plate 234, bolt 235 passes through sliding slot 232, external logical
It crosses the mode being threadedly coupled and is connected with wing nut 236, wing nut 236 cooperates with bolt 235 consolidates the position of placement plate 234
It lives calmly.When needing to accelerate the heating speed of bottle 15, teacher can unscrew the wing nut 236 of two sides, draw then up
Dynamic placement plate 234, second spring 233 are stretched, and placement plate 234 drives alcolhol burner 4 to move up, and alcolhol burner 4 moves up, and makes
Flame closer to bottle 15, heating speed faster, when alcolhol burner 4 is moved upwards up to the position of needs, again by two sides
Wing nut 236 tighten, by wing nut 236 and bolt 235 cooperation the position of placement plate 234 is fixed again, make
The position for obtaining alcolhol burner 4 is fixed.When needing to slow down the heating speed of bottle 15, teacher can be by the wing nut of two sides
236 unscrew, and then press placement plate 234 downwards, and second spring 233 is compressed, and placement plate 234 drives alcolhol burner 4 to move down,
Alcolhol burner 4 moves down, so that flame is far from bottle 15, heating speed is slack-off, when alcolhol burner 4 is moved down into the position of needs
When, the wing nut 236 of two sides is tightened again, is cooperated by wing nut 236 and bolt 235 again by placement plate 234
Position is fixed, so that the position of alcolhol burner 4 is fixed.15 heating speed of bottle is controlled by adjusting the height of alcolhol burner 4
Speed, can be convenient the progress of experiment.
Because further including having inserted link 25, the second through-hole 24 is symmetrically provided in placement plate 234, alcolhol burner 4 is placed on
234 top of plate is set, 4 bottom of alcolhol burner bilateral symmetry is equipped with inserted link 25, and inserted link 25 passes through the second through-hole 24.When needed may be used
To remove alcolhol burner 4, inserted link 25 and the second through-hole 24 are combined with the effect for fixing alcolhol burner 4.
Because further including having work-saving device 26,1 left arm left upper portion of mounting rack is equipped with work-saving device 26, and work-saving device 26 wraps
Included strut 261, motor 262, cam 263, baffle 264, third spring 265 and guide sleeve 266, on the left of 1 left arm of mounting rack on
Portion is equipped with strut 261, and motor 262 is equipped on strut 261, is connected with cam 263, push rod on the output shaft of 262 front side of motor
14 top left sides are equipped with baffle 264, are connected with third spring between 1 left arm left upper portion of 264 right side central of baffle and mounting rack
265,9 bottom left of connecting rod is equipped with guide sleeve 266, and push rod 14 passes through guide sleeve 266.It is real when nobody pushes push rod 14
The person of testing controls motor 262 and rotates counterclockwise, and band moving cam 263 rotates counterclockwise, and when cam 263 is contacted with baffle 264, pushes
Baffle 264 moves right, and drives push rod 14 to move right, third spring 265 is compressed, when 263 distalmost end of cam leaves baffle
After 264, third spring 265 restores to the original state, and baffle 264 is driven to be moved to the left reset, and then it is multiple to drive baffle 264 to move right
Position.Repeatedly, there is no need to people to push push rod 14, even if a people is testing, experiment can also be gone on, to do
Experimenter provides convenience, and after experiment, control motor 262 stops working.Promising second sliding block 10 of guide sleeve shares gravity
Effect.
Because further including having plug 28,9 right part of connecting rod and 11 left part of the second sliding rail are provided with jack 27,27 interpolation of jack
There is plug 28.When testing beginning, plug 28 is extracted out of jack 27, in observation experiment result, plug 28 is turned back to slotting
In hole 27, the movement because of bottle 15, the case where influencing experimental result generation can be so prevented.
Control mode of the invention is automatically controlled by controller, the skill that the control circuit of controller passes through this field
Art personnel's simple programming can be realized, and belong to the common knowledge of this field, and the present invention is mainly used to protect mechanical device, institute
Control mode and circuit connection are not explained with the present invention.
The preferred embodiment of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, several deformations can also be made, improves and substitutes, these belong to this hair
Bright protection scope.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (1)
1. a kind of physics teaching is expanded with heat and contract with cold experimental facilities with air, which is characterized in that include mounting rack (1), the first sliding rail
(2), the first sliding block (3), alcolhol burner (4), the first block (5), the first spring (6), the first fixed pulley (8), connecting rod (9),
Two sliding blocks (10), the second sliding rail (11), the second block (12), push rod (14), bottle (15), the first bracing wire (16), second are slided calmly
It is embedding to take turns (17), third sliding rail (18), third sliding block (19), piston (21) and the second bracing wire (22), mounting rack (1) interior bottom right
Have the first sliding rail (2), slidingtype is connected with the first sliding block (3) on the first sliding rail (2), and alcolhol burner is equipped at the top of the first sliding block (3)
(4), mounting rack (1) interior bottom right is equipped with the first block (5), and the first block (5) is on the right side of the first sliding rail (2), the first block
(5) it is connected between the first sliding block (3) the first spring (6), mounting rack (1) left arm lower part and middle part are provided with first through hole
(7), mounting rack (1) left arm left lower is symmetrical above and below is equipped with the first fixed pulley (8), is provided with guiding in the middle part of mounting rack (1) left arm
Hole (13), pilot hole (13) is above first through hole (7), and mounting rack (1) left arm right upper portion is equipped with connecting rod (9), connecting rod
(9) bottom right is equipped with the second sliding block (10), and slidingtype is connected with the second sliding rail (11), the second sliding rail on the second sliding block (10)
(11) left end is connected with push rod (14), and push rod (14) passes through pilot hole (13), and the second sliding rail (11) top right side is equipped with second gear
Block (12), the second block (12) is on the right side of the second sliding block (10), and the second sliding rail (11) right end is connected with bottle (15), bottle (15)
Left lower is connected with the first bracing wire (16), and the first bracing wire (16) passes through the first through hole (7) on top, fixed sliding around two first
It takes turns (8), the first through hole (7) across lower part, right end is connected on the left of the first sliding block (3), mounting rack (1) inner top bilateral symmetry
Equipped with the second fixed pulley (17), third sliding rail (18) are equipped on the left of mounting rack (1) inner top, slidingtype connects on third sliding rail (18)
It is connected to third sliding block (19), is carved on third sliding rail (18) scale (20), bottle (15) internal upper part is equipped with piston (21), piston
(21) cooperate with bottle (15), piston (21) top center is connected with the second bracing wire (22), and the second bracing wire (22) is around two the
Two fixed pulleys (17), bottom end are connected at the top of third sliding block (19);It further include having height adjustment device (23), the first sliding block (3)
Top is equipped with height adjustment device (23), and height adjustment device (23) is equipped with alcolhol burner (4), and height adjustment device (23) includes
There are placing frame (231), second spring (233), placement plate (234), bolt (235) and wing nut (236), the first sliding block (3)
Top is equipped with placing frame (231), and two wall tops of placing frame (231) left and right are provided with sliding slot (232), placing frame (231) interior bottom
Bilateral symmetry is equipped with second spring (233), and second spring (233) top is connected with placement plate (234), and alcolhol burner (4) setting exists
It in placement plate (234), is equipped with bolt (235) at left and right sides of placement plate (234), bolt (235) passes through sliding slot (232), external
The mode being connected through a screw thread is connected with wing nut (236), and wing nut (236) and bolt (235) cooperate placement plate
(234) position is fixed;Further include having inserted link (25), the second through-hole (24), alcohol are symmetrically provided in placement plate (234)
Lamp (4) is placed at the top of placement plate (234), and alcolhol burner (4) bottom bilateral symmetry is equipped with inserted link (25), and inserted link (25) passes through second
Through-hole (24);It further include having work-saving device (26), mounting rack (1) left arm left upper portion is equipped with work-saving device (26), work-saving device
It (26) include strut (261), motor (262), cam (263), baffle (264), third spring (265) and guide sleeve (266),
Mounting rack (1) left arm left upper portion is equipped with strut (261), is equipped with motor (262) on strut (261), on front side of motor (262)
It is connected on output shaft cam (263), push rod (14) top left side is equipped with baffle (264), baffle (264) right side central and installation
It is connected with third spring (265) between frame (1) left arm left upper portion, connecting rod (9) bottom left is equipped with guide sleeve (266), pushes away
Bar (14) passes through guide sleeve (266);It further include having plug (28), connecting rod (9) right part and the second sliding rail (11) left part are provided with
Jack (27), jack (27) is interior to be inserted with plug (28).
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| Application Number | Priority Date | Filing Date | Title |
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| CN110459106A (en) * | 2019-08-14 | 2019-11-15 | 济宁医学院 | A kind of physical chemistry synthetic instruction interest demonstration equipment |
| CN110767022A (en) * | 2019-11-12 | 2020-02-07 | 江南大学附属医院（无锡市第四人民医院） | Multifunctional training teaching aid for hemodialysis catheter nursing |
| CN115100929B (en) * | 2022-07-07 | 2023-10-27 | 淮阴工学院 | Air expansion teaching demonstration equipment for physical experiment |
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| CN206574347U (en) * | 2016-12-16 | 2017-10-20 | 黄玥玥 | A kind of physics teaching demonstrating expansion on heating and contraction on cooling device |
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| CN201812408U (en) * | 2010-10-15 | 2011-04-27 | 柳延东 | Heat energy-to-mechanical energy teaching experiment device |
| CN201893051U (en) * | 2010-10-19 | 2011-07-06 | 洪剑 | Multifunctional thermal expansion and cold contraction demonstrator |
| CN105931547A (en) * | 2016-06-28 | 2016-09-07 | 马晓璐 | Chemical experiment demonstration device for students' dormitory |
| CN206148004U (en) * | 2016-07-28 | 2017-05-03 | 程聪 | Physical teaching goes up and down to demonstrate model |
| CN107274764A (en) * | 2017-08-18 | 2017-10-20 | 郑州单点科技软件有限公司 | Amplification apparatus for demonstrating for Physical Experiment principle of expanding with heat and contracting with cold |
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| CN206574347U (en) * | 2016-12-16 | 2017-10-20 | 黄玥玥 | A kind of physics teaching demonstrating expansion on heating and contraction on cooling device |
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