CN106057034B - Buoyancy teaching demonstration structure - Google Patents
Buoyancy teaching demonstration structure Download PDFInfo
- Publication number
- CN106057034B CN106057034B CN201610722239.9A CN201610722239A CN106057034B CN 106057034 B CN106057034 B CN 106057034B CN 201610722239 A CN201610722239 A CN 201610722239A CN 106057034 B CN106057034 B CN 106057034B
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- China
- Prior art keywords
- lifting
- cup
- pouring weight
- column
- measuring
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 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 57
- 150000003839 salts Chemical class 0.000 claims description 19
- 241000190070 Sarracenia purpurea Species 0.000 claims description 14
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 238000002474 experimental method Methods 0.000 abstract description 13
- 230000005484 gravity Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000004941 influx Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
Abstract
The invention discloses a kind of buoyancy teaching demonstration structures, including load carrier, lifting mechanism, pouring weight measuring mechanism, pouring weight, cup, measuring cup etc., wherein load carrier plays carrying, lifting mechanism can lift cup, measuring cup, be fixed with pouring weight below pouring weight measuring mechanism at the same time, when lifting mechanism carries out lift operation, cup and measuring cup move up, when pouring weight enters cup, water overflows, and pouring weight measuring mechanism shows that numerical value becomes smaller, and water flows into measuring cup after overflowing.Operation lifting mechanism is displaced downwardly to above load carrier after the test, and the weight for overflowing water in measurement measuring cup at this time is equal to pouring weight measuring mechanism and shows the quantity that numerical value becomes smaller, i.e. buoyancy is equal to the gravity drained.The present invention can be and reasonable integral structure, easy to operate accurately to buoyancy experiment, guarantees teaching vivid and interesting, the composite can be widely applied in physics teaching.
Description
Technical field
The present invention relates to a kind of physical teaching aid, specifically a kind of buoyancy teaching demonstration structure.
Background technique
Students aid in teaching aid and experimental provision when learning book knowledge, the understanding to knowledge is deepened
It is greatly helped with grasping to have, especially for the student of the relevant knowledges such as first contacts study buoyancy, physics is with hall reality
Experiment device is very necessary.And in existing physics teaching, just lack such in-class experiment device, teacher or completely
It carries out teaching by book knowledge or oneself makes some nonstandard Self-made Realias that student is helped to understand physical knowledge,
Ideal effect is all not achieved in the either reliability of teaching aid and actual teaching purpose.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of buoyancy teaching demonstration structure, is able to solve in the prior art
The existing above problem.
The present invention to achieve the above object, is achieved through the following technical solutions:
A kind of buoyancy teaching demonstration structure, including load carrier, the load carrier include the pedestal being set on desktop,
The left part of the pedestal is provided with the first upright post connecting plate, is provided on first upright post connecting plate vertical with the pedestal
The first column, the right part of the pedestal is provided with the second upright post connecting plate, be provided on second upright post connecting plate with
The second vertical column of the pedestal, is provided with vertical between the upper end of first column and the upper end of second column
It is directly provided in plane on the cross bar of first column and second column, the right end of the cross bar left to the cross bar
The sliding slot that side extends is located on the right side of first column on the pedestal and is provided with lifting mechanism, the lifting mechanism packet
The lifting pedestal fixed with the pedestal is included, is provided with through-hole on the leading flank of the lifting pedestal, it is described to lift the upper of pedestal
The left end of plane and right end are respectively arranged with left lifting location hole and right lifting location hole, in the upper plane of the lifting pedestal and
Lifting gear holding tank and middle part lifting hole, institute are provided between the left lifting location hole and the right lifting location hole
State right side and the two connection setting, the through-hole and the lifting gear that middle part lifting hole is located at the lifting gear holding tank
Holding tank connection is arranged, and is provided in the lifting gear holding tank and is adapted with the lifting gear holding tank size and shape
Lifting gear, the lifting gear is circumferentially arranged engaging tooth and its center location is equipped with lifting gear shaft, the act
The one end for rising gear shaft passes through the center of circle for lifting gear and matches with the axis hole rotation on the corresponding inner wall of the lifting gear grooved
It closes, the other end of the lifting gear shaft passes through the through-hole and an end of rocker arm connecting rod is assembled, the rocker arm connection
The other end of bar is equipped with lifting rocker arm, and top of lifting gear when with the lifting gear grooved assembly is lower than the act
The top of gear grooved is risen, the lift master with plane contact on the lifting pedestal, the lifting are provided on the lifting pedestal
The left end of the lower plane of platform and right end are provided with the left side with the left lifting location hole and the right lifting location hole assembly respectively
Locating rod and right locating rod, the lower plane of the lift master and are provided between the left locating rod and the right locating rod
The lifting rack bar of hole assembly is lifted with the middle part, is provided with rack gear, the rack gear and institute on the left of the lifting rack bar
The engagement tooth engagement on lifting gear is stated, the upper plane middle position of the lift master is provided with cup fixing groove, the cup
Be fixed with opening up square water cup in fixing groove, the square water cup be internally provided with the partition that extends along the longitudinal direction with
The square water cup is separated into left cup body and right cup body, the left side upper end of the left cup body is provided with left outlet pipe, the right side
The right side upper end of cup body is provided with right outlet pipe, and the upper plane of the lift master, which is located on the left of the cup fixing groove, to be provided with
Left measuring cup fixing groove, the upper plane of the lift master, which is located on the right side of the cup fixing groove, is provided with right measuring cup fixing groove, institute
It states and is provided with opening up left measuring cup in left measuring cup fixing groove, be provided with opening up right amount in the right measuring cup fixing groove
Cup, the left outlet pipe protrude into the opening of the left measuring cup, and the right outlet pipe protrudes into the opening of the right measuring cup, the left cup
Pure water is housed in vivo, the right cup body is provided with salt water, the pure water or the salt water on the left cup body or the right side
The intracorporal height of cup is equal with the lowermost of the left outlet pipe or right outlet pipe height, be equipped on the sliding slot with
The pouring weight measuring mechanism that the sliding slot is slidably matched, the pouring weight measuring mechanism include measuring mechanism ontology, the measuring mechanism
The sliding opening penetrated through in left-right direction is provided on ontology, the top of the sliding opening, which is provided with to slide with the sliding slot, to be filled
The slide protrusion matched, is provided with sliding handle in the upper plane of the sliding equipment ontology, the sliding equipment ontology it is lower flat
Electronic scale one is fixed on face, the lower plane of the electronic scale one is provided with the hook for being respectively used to suspension pouring weight one and pouring weight two
One and hook two, after the pouring weight one or the pouring weight two and one or described hook of the hook, two assembly and the lifting mechanism
The bottom surface of the pouring weight one or the pouring weight two is higher than the horizontal plane of the pure water or the salt water, and institute when positioned at minimum point
The bottom surface for stating pouring weight one or the pouring weight two is less than the lifting tooth at a distance from the horizontal plane of the pure water or the salt water
/ 5th of the rack gear length of bar are provided on the leading flank of the electronic scale one for showing one weight of pouring weight respectively
The display screen one and display screen two of amount and two weight of pouring weight planar front portion and are located at the lifting mechanism on the pedestal
Right side is provided with electronic scale two.
It is limited as another kind, first column and the upright post connecting plate are integrally formed, first column
Connecting plate is bolted with the pedestal.Second column and second upright post connecting plate are integrally formed, and described the
Two upright post connecting plates are bolted with the pedestal.
As restriction, the left part of the cross bar is provided with cross bar connection box, the left side setting of the cross bar connection box
There is bolt hole, upper surface is provided with threaded hole on the left of first column, and the cross bar connection box is set in first column
Upper end and by connection bolt pass through the bolt hole and the threaded hole realization tighten with fixation first column and institute
State cross bar.
It is limited as another kind, the right side of first the upper end of the column passes through welding with the inner wall that the cross bar connect box
It is fixed.
It is limited as further, the length of the sliding slot and the ratio of the total length of the cross bar are arrived 2/3rds
Between 3/4ths, the ratio of the rack gear length of the height of the pouring weight one or the pouring weight two and the lifting rack bar is two
Between 4/1 mono- to five.
As restriction, the bottom front-rear direction of the pedestal is provided with the opening one for penetrating through the pedestal, the pedestal
Bottom left and right directions is provided with the opening two for penetrating through the pedestal.
Left fixed bracket and right fixed bracket, the left fixed bracket are provided in the upper plane of the lift master
With the fixation lasso for fixing the square water cup, left measuring cup and right measuring cup is fixed on right fixed bracket.
The present invention is due to using above-mentioned structure, and compared with prior art, acquired technological progress is:
The present invention can be adjusted by height of the lifting mechanism to cup and measuring cup, make cup and measuring cup to moving up
Dynamic, when pouring weight one or pouring weight two enter cup, water overflows, and pouring weight measuring mechanism shows that numerical value becomes smaller, influx after water overflows
Cup, measures the weight that water is overflowed in measuring cup at this time and pouring weight measuring mechanism shows the quantity that numerical value becomes smaller, i.e. whether buoyancy is equal to
The gravity of draining.Therefore the present invention can accurately carry out buoyancy demonstration by appealing structure, easy to operate, and guarantee that teaching is lively
It is interesting.
To sum up, practicability of the present invention is high, can satisfy buoyancy teaching demand, and can reach good teaching efficiency.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.
Fig. 1 is overall structure diagram described in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of load carrier described in the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of lifting mechanism described in the embodiment of the present invention；
Fig. 4 is the structural schematic diagram of pouring weight measuring mechanism described in the embodiment of the present invention.
In the accompanying drawings: 1- load carrier, 111- pedestal, 112- opening one, 113- opening the first column of two, 121-, 122-
First upright post connecting plate, 131- cross bar, 132- connection bolt, 133- cross bar connect box, 134- sliding slot, the connection of 135- second crossbar
Box, 136, second connection the second column of bolt 141-, the second upright post connecting plate of 142-, 151- electronic scale two, 152- second are shown
Screen, 2- lifting mechanism, 211- lift pedestal, the right lifting location hole of 212-, the left lifting location hole of 213-, 214- lifting gear receiving
Slot, the middle part 215- lift hole, 216- through-hole, and 221- lifts gear, and 222- lifts gear shaft, 223- rocker arm connecting rod, and 224- is lifted
Rise rocker arm, 231- lift master, the left measuring cup fixing groove of 232-, 233- cup fixing groove, the left locating rod of 234-, 235- lifting rack gear
Bar, 2351- rack gear, the right locating rod of 236-, the right measuring cup fixing groove of 237-, the fixed lasso of 241-, the left fixed bracket of 242-, 243- are right
Fixed bracket, 3- pouring weight measuring mechanism, 311- measuring mechanism ontology, 312- sliding opening, 313- slide protrusion, 331- electronic scale
One, 332- display screen one, 333- display screen two, 341- link up with one, 342- and link up with two, 41- pouring weight one, and 42- pouring weight two, 5- is rectangular
Cup, the left outlet pipe of 51-, the right outlet pipe of 52-, 53- partition, the left cup body of 54-, the right cup body of 55-, the left measuring cup of 61-, the right measuring cup of 62-.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is further explained.In the following detailed description, only pass through explanation
Mode describes certain exemplary embodiments of the invention.Undoubtedly, those skilled in the art will recognize,
In the case where without departing from the spirit and scope of the present invention, described embodiment can be repaired with a variety of different modes
Just.Therefore, attached drawing and description are regarded as illustrative in nature, and are not intended to limit the scope of the claims.
As Figure 1-Figure 4, buoyancy teaching demonstration structure according to an embodiment of the present invention, including load carrier 1, it is described to hold
Mounted mechanism 1 includes the pedestal 111 being set on desktop, and the left part of the pedestal is provided with the first upright post connecting plate 122, described
First column 121 vertical with the pedestal 111, the right part setting of the pedestal are provided on first upright post connecting plate 122
There is the second upright post connecting plate 142, second column vertical with the pedestal 111 is provided on second upright post connecting plate 142
141, described first is provided perpendicular between the upper end of first column 121 and the upper end of second column 141
The cross bar 131 of column 121 and second column 141, plane is provided with to the cross bar on the right end of the cross bar 131
The sliding slot 134 that 131 left sides extend, the right side on the pedestal 111 positioned at first column 121 are provided with lifting mechanism 2,
The lifting mechanism 2 includes the lifting pedestal 211 fixed with the pedestal, is provided on the leading flank of the lifting pedestal 211
Through-hole 216, the left end of the upper plane of the lifting pedestal 211 and right end are respectively arranged with left lifting location hole 213 and right lifting
Location hole 212 in the upper plane of the lifting pedestal 211 and is located at the left lifting location hole 213 and the right lifting positions
Lifting gear holding tank 214 and middle part lifting hole 215 are provided between hole 212, middle part lifting hole 215 is located at the lifting
The right side of gear holding tank 214 and the two connection setting, the through-hole 216 are connected to setting with the lifting gear holding tank 214,
The lifting tooth adaptable with lifting 214 size and shape of gear holding tank is provided in the lifting gear holding tank 214
Wheel 221, the lifting gear 221 is circumferentially arranged engaging tooth and its center location is equipped with and lifts gear shaft 222, the act
The one end for rising gear shaft 222 passes through the center of circle for lifting gear 221 and the axis on the corresponding inner wall of the lifting gear grooved 214
Hole is rotatably assorted, and the other end of the lifting gear shaft 222 passes through an end of the through-hole 216 and rocker arm connecting rod 223
Assembly, the other end of the rocker arm connecting rod 223 be equipped with lifting rocker arm 224, the lifting gear 221 with the lifting tooth
Top when race 214 assembles lower than the top of the lifting gear grooved 214, be provided on the lifting pedestal 211 with it is described
The lift master 231 of plane contact on pedestal 211 is lifted, the left end of the lower plane of the lift master 231 and right end are provided with difference
The left locating rod 234 and right locating rod 236 assembled with the left lifting location hole 213 and the right lifting location hole 212, it is described
The lower plane of lift master 231 and be provided between the left locating rod 234 and the right locating rod 236 and the middle part lift
The lifting rack bar 235 that hole 215 is assembled is risen, the left side of the lifting rack bar 235 is provided with rack gear 2351, the rack gear 2351
Tooth engagement is engaged on the lifting gear 221, the upper plane middle position of the lift master 231 is provided with cup fixing groove
233, opening up square water cup 5 is fixed in the cup fixing groove 233, and the square water cup 5 is internally provided with along preceding
The partition 53 that rear direction extends is to be separated into left cup body 54 and right cup body 55, a left side for the left cup body 54 for the square water cup 5
Side upper end is provided with left outlet pipe 51, and the right side upper end of the right cup body 55 is provided with right outlet pipe 52, the lift master 231
The left side that upper plane is located at the cup fixing groove 233 is provided with left measuring cup fixing groove 232, the upper plane of the lift master 231
The right side of the cup fixing groove 233 is provided with right measuring cup fixing groove 237, is provided in the left measuring cup fixing groove 232
Opening up left measuring cup 61 is provided with opening up right measuring cup 62, the left outlet pipe in the right measuring cup fixing groove 237
51 protrude into the opening of the left measuring cup 61, and the right outlet pipe 52 protrudes into the opening of the right measuring cup 62, in the left cup body 54
Equipped with pure water, the right cup body 55 is provided with salt water, the pure water or the salt water on the left cup body 54 or the right side
Height in cup body 55 and equal, the sliding slot 134 of the lowermost of the left outlet pipe 51 or the right outlet pipe 52 height
On be equipped with the pouring weight measuring mechanism 3 being slidably matched with the sliding slot 134, the pouring weight measuring mechanism 3 includes measuring mechanism sheet
Body 311, is provided with the sliding opening 312 penetrated through in left-right direction on the measuring mechanism ontology 311, and the sliding is open 312
Top be provided with the slide protrusion 313 with 134 slidable fit of sliding slot, in the upper plane of the sliding equipment ontology 311
It is provided with sliding handle 321, electronic scale 1, the electronic scale one are fixed on the lower plane of the sliding equipment ontology 311
331 lower plane is provided with the hook 1 for being respectively used to suspension pouring weight 1 and pouring weight 2 42 and hook 2 342, described heavy
After block 1 or the pouring weight 2 42 and one 341 or described hook of the hook, 2 342 assembly and the lifting mechanism 2 is located at most
The bottom surface of the pouring weight one or the pouring weight two is higher than the horizontal plane of the pure water or the salt water, and the pouring weight when low spot
1 or the pouring weight 2 42 bottom surface at a distance from the horizontal plane of the pure water or the salt water be less than the lifting rack gear
/ 5th of 2351 length of rack gear of bar 235 are provided on the leading flank of the electronic scale 1 for described in display respectively
The display screen 1 and display screen 2 333 of two weight of one weight of pouring weight and the pouring weight, on the pedestal 111 planar front portion and
Right side positioned at the lifting mechanism 2 is provided with electronic scale 2 151.
In the embodiment of the present invention, plane is provided with the sliding slot extended on the left of cross bar 131 on the right end of cross bar 131
134, the length of sliding slot 134 can accordingly be designed according to the position of pouring weight 1 or pouring weight 2 42 above square water cup 5,
Need to guarantee that pouring weight one and pouring weight two can move freely in the opening of square water cup 5, pouring weight measuring mechanism 3 can be
It is free to slide on sliding slot 134, by the cooperation of slide protrusion 313 and sliding slot 134 in sliding opening 312, it has been effectively ensured two
The reliability connected between person, while electronic scale 1 is provided on pouring weight measuring mechanism 3, the display screen on electronic scale 1
1 and display screen 2 333 show a measurement number respectively when pouring weight 1 and pouring weight 2 42 be not with pure water and saline contacts
Value, lifting mechanism 2 include lifting pedestal 211, lifting gear 221 and lift master 231 etc., lift rocker arm 224 by shaking, can
To drive lifting gear 221 to rotate, and then the lifting rack bar 235 that is engaged with is driven to move up and down, when lifting rack bar to
When upper movement, the square water cup 5 on lift master 231, left measuring cup 61 and right measuring cup 62 can be made to move upwards, and then make pouring weight
1 and pouring weight 2 42 respectively enter the right cup body 52 equipped with pure left cup body 51 and equipped with salt water so that pure in cup
Water and salt water overflow, and separately flow into left measuring cup 61 and right measuring cup 62, when pouring weight 1 and pouring weight 2 42 sink to suitable position
When setting, display screen 1 and display screen 2 333 on electronic scale 331 show pouring weight 1 and pouring weight 42 in buoyancy respectively
Under another group of measurement numerical value, at this time experiment terminate, operation lifting mechanism 2 be displaced downwardly to least significant end, at this time by left measuring cup 61 and the right side
For measuring cup 62 as that on electronic scale 2 151, can show corresponding measurement numerical value on second display screen 152 at this time, which measures number
Value is that the weight of left measuring cup 61 and right measuring cup 62 is individually subtracted in the measured value of electronic scale 2 151, if this group measurement numerical value point
Not Deng Yu the display screen 1 of electronic scale 1 subtract experiment in the display numerical value that pouring weight 1 is not contacted with pure water and terminate
When display screen 1 display numerical value and display screen 2 333 in pouring weight 2 42 do not subtract reality with the display numerical value of saline contacts
The display numerical value of display screen 2 333 at the end of testing then proves that F floats=G row, and (G row, which is equal to, to be flowed into left measuring cup 61 or right measuring cup 62
Water or salt water weight, the display that the floating display screen 1 equal to electronic scale 1 of F is not contacted with pure water in pouring weight one
It is not aobvious with saline contacts in pouring weight two that numerical value subtracts the display numerical value of display screen 1 or display screen 2 333 at the end of experiment
Registration value subtract experiment at the end of display screen 2 333 display numerical value, i.e. pouring weight 1 or pouring weight 2 42 is in water or in salt water
Buoyancy).
In this way, the present invention can carry out buoyancy experiment under different densities liquid, experiment anecdote is improved.
Further, as shown in Fig. 2, first column 121 and first upright post connecting plate, 122 one at
Type, first upright post connecting plate 122 are bolted with the pedestal 111, and second column 41 is stood with described second
Column connecting plate 142 is integrally formed, and second upright post connecting plate 142 is bolted with the pedestal 111.
In the embodiment of the present invention, the first column 121 and the first upright post connecting plate 122 are integrally formed, easy to process and system
Make at low cost, while the first upright post connecting plate 122 is bolted with pedestal 111, ensure that connection reliability.
Further, as shown in Fig. 2, the left part of the cross bar 131 is provided with cross bar connection box 133, the cross bar connects
The left side for connecing box 133 is provided with bolt hole, and the 121 left side upper surface of the first column is provided with threaded hole, and the cross bar connects
Box 133 is connect to be set in the upper end of first column 121 and pass through the bolt hole and the threaded hole by connection bolt 132
Realization is tightened with fixation first column 121 and the cross bar 131.
Meanwhile the present invention is correspondingly provided with second crossbar connection box 135, second in 111 right part of pedestal and connects bolt
136, the second column 141 and the second upright post connecting plate 142, above structure to be connected and fixed mode identical as left part, in this way,
It can guarantee 131 fixing-stable of transverse slat.
Further, the ratio of the total length of the length of the sliding slot 134 and the cross bar 131 is at 2 to four/3rds points
Three between, the height of the pouring weight 1 or pouring weight 2 42 and it is described lifting rack bar 235 2351 length of rack gear ratio
Between half to 4/5ths.
In the embodiment of the present invention, the ratio of the total length of the length and cross bar 131 of sliding slot 134 is at 2 to four/3rds points
Three between, in this way can guarantee sliding distance of the pouring weight measuring mechanism 3 in sliding slot, to further facilitate the operation of experiment；Together
When pouring weight 1 or pouring weight 2 42 height and lifting rack bar 235 2351 length of rack gear ratio in half to five points
Four between, both can guarantee that pouring weight 1 or pouring weight 2 42 can have enough sinking distances in pure water or salt water in this way,
Simultaneously because after pouring weight 1 or pouring weight 2 42 and hook assembly and pouring weight 1 or pouring weight when lifting mechanism 2 is located at minimum point
2 42 bottom surface is less than the five of 2351 length of rack gear of lifting rack bar 235 at a distance from the horizontal plane of the pure water or salt water
/ mono-, it is also ensured in this way if heavy when the density of selected pouring weight 1 or pouring weight 2 42 is greater than the density of pure water or salt water
Block 1 or pouring weight 2 42 can be sunk to completely wherein, to guarantee experiment purpose.
Further, as shown, the bottom front-rear direction of the pedestal 111, which is provided with, penetrates through opening for the pedestal 111
Mouth 1, the bottom left and right directions of the pedestal 111 is provided with the opening 2 113 for penetrating through the pedestal 111.
The design of opening 1 and opening 2 113 can guarantee the steady contact of pedestal 111 Yu desktop as a result,.
Preferably, left fixed bracket 242 and right fixed bracket are provided in the upper plane of the lift master 231
243, be fixed on the left fixed bracket 242 and right fixed bracket 243 for fix the square water cup 5, left measuring cup 61 with
And the fixation lasso 241 of right measuring cup 62.
In this way, can prevent from toppling over when experiment leads to the failure of an experiment.
The foregoing is merely the schematical specific embodiment of the present invention, the range being not intended to limit the invention.It is any
Those skilled in the art, the equivalent changes and modifications made under the premise of not departing from design and the principle of the present invention,
It should belong to the scope of protection of the invention.
Claims (7)
1. a kind of buoyancy teaching demonstration structure, it is characterised in that: including load carrier (1), the load carrier (1) includes setting
In the bottom base (111) on desktop, the left part of the bottom base is provided with the first upright post connecting plate (122), and described
First column (121) vertical with the bottom base (111), the right side of the pedestal are provided on one upright post connecting plate (122)
End is provided with the second upright post connecting plate (142), is provided with and the bottom base on second upright post connecting plate (142)
(111) vertical the second column (141), the upper end of first column (121) and the upper end of second column (141)
Between be provided perpendicular to the cross bar (131) of first column (121) and second column (141), the cross bar (131)
Right end on plane be provided with to the sliding slot (134) extended on the left of the cross bar (131), on the bottom base (111)
It is provided with lifting mechanism (2) on the right side of first column (121), the lifting mechanism (2) includes and the bottom base
Seat fixed lifting pedestal (211) is provided with through-hole (216) on the leading flank of lifting pedestal (211), the lifting pedestal
(211) left end of upper plane and right end are respectively arranged with left lifting location hole (213) and right lifting location hole (212), described
It lifts in the upper plane of pedestal (211) and between the left lifting location hole (213) and the right lifting location hole (212)
It is provided with lifting gear holding tank (214) and middle part lifting hole (215), middle part lifting hole (215) is located at the lifting tooth
It takes turns the right side of holding tank (214) and the two connection setting, the through-hole (216) is connected to the lifting gear holding tank (214)
Setting, interior be provided with of the lifting gear holding tank (214) are adapted with lifting gear holding tank (214) size and shape
Lifting gear (221), the lifting gear (221) is circumferentially arranged engaging tooth and its center location is equipped with lifting gear
Axis (222), one end of lifting gear shaft (222) passes through the center of circle of lifting gear (221) and the lifting gear holds
The axis hole received on the correspondence inner wall of slot (214) is rotatably assorted, and the other end of lifting gear shaft (222) passes through the through-hole
(216) it is assembled with an end of rocker arm connecting rod (223), the other end of the rocker arm connecting rod (223) is equipped with lifting and shakes
Arm (224), top of lifting gear (221) when assembling with lifting gear holding tank (214) are lower than the lifting
The top of gear holding tank (214) is provided with and plane contact on the lifting pedestal (211) on the lifting pedestal (211)
Lift master (231), the left end of the lower plane of the lift master (231) and right end be provided with respectively with the left lifting location hole
(213) and it is described it is right lifting location hole (212) assembly left locating rod (234) and right locating rod (236), the lift master
(231) it lower plane and is provided between the left locating rod (234) and the right locating rod (236) and the middle part is lifted
The lifting rack bar (235) of hole (215) assembly is risen, is provided with rack gear (2351) on the left of the lifting rack bar (235), it is described
Rack gear (2351) engages tooth engagement on lifting gear (221), and the upper plane interposition of the lift master (231) installs
It is equipped with cup fixing groove (233), is fixed with opening up square water cup (5) on the cup fixing groove (233), it is described rectangular
Cup (5) is internally provided with the partition (53) extended along the longitudinal direction so that the square water cup (5) is separated into left cup body (54)
It is provided with left outlet pipe (51) with the left side upper end of right cup body (55), the left cup body (54), the right side of the right cup body (55)
Upper end is provided with right outlet pipe (52), and the upper plane of the lift master (231), which is located on the left of the cup fixing groove (233), to be set
It is equipped with left measuring cup fixing groove (232), the upper plane of the lift master (231), which is located on the right side of the cup fixing groove (233), to be set
It is equipped with right measuring cup fixing groove (237), opening up left measuring cup (61) is provided on the left measuring cup fixing groove (232), it is described
Opening up right measuring cup (62) is provided on right measuring cup fixing groove (237), the left outlet pipe (51) protrudes into the left measuring cup
(61) opening, the right outlet pipe (52) protrude into the opening of the right measuring cup (62), and the left cup body (54) is provided with pure
Water, the right cup body (55) are provided with salt water, the pure water or the salt water in the left cup body (54) or the right cup body
(55) height in and equal, the sliding slot of the lowermost of the left outlet pipe (51) or the right outlet pipe (52) height
(134) the pouring weight measuring mechanism (3) being slidably matched with the sliding slot (134) is equipped on, the pouring weight measuring mechanism (3) includes
Measuring mechanism ontology (311) is provided with the sliding opening (312) penetrated through in left-right direction on the measuring mechanism ontology (311),
The top of the sliding opening (312) is provided with the slide protrusion (313) with the sliding slot (134) slidable fit, the measurement
It is provided in the upper plane of mechanism body (311) sliding handle (321), it is solid on the lower plane of the measuring mechanism ontology (311)
It is connected with electronic scale one (331), the lower plane of the electronic scale one (331), which is provided with, is respectively used to suspension pouring weight one (41) and pouring weight
Two (342) of hook one (341) and hook of two (42), the pouring weight one (41) or the pouring weight two (42) and the hook one
(341) or two (342) of the hook assembly after and the lifting mechanism (2) be located at the pouring weight one or the pouring weight when minimum point
Two bottom surface is higher than the horizontal plane of the pure water or the salt water, and the bottom of the pouring weight one (41) or the pouring weight two (42)
Face is less than rack gear (2351) length of lifting rack bar (235) at a distance from the horizontal plane of the pure water or the salt water
1/5th, be provided on the leading flank of the electronic scale one (331) for showing one weight of pouring weight and described respectively
The display screen one (332) and display screen two (333) of two weight of pouring weight planar front portion and are located at institute on the bottom base (111)
It states and is provided with electronic scale two (151) on the right side of lifting mechanism (2).
2. buoyancy teaching demonstration structure according to claim 1, it is characterised in that: first column (121) with it is described
First upright post connecting plate (122) is integrally formed, and first upright post connecting plate (122) and the bottom base (111) pass through spiral shell
Bolt is fixed, and second column (141) and second upright post connecting plate (142) are integrally formed, second upright post connecting plate
(142) it is bolted with the bottom base (111).
3. buoyancy teaching demonstration structure according to claim 2, it is characterised in that: the left part of the cross bar (131) is set
It is equipped with cross bar connection box (133), the left side of cross bar connection box (133) is provided with bolt hole, first column (121)
Left side upper surface is provided with threaded hole, and cross bar connection box (133) is set in the upper end of first column (121) and passes through
Connection bolt (132) passes through the bolt hole and threaded hole realization is tightened with fixation first column (121) and described
Cross bar (131).
4. buoyancy teaching demonstration structure according to claim 3, it is characterised in that: the first column (121) upper end
Right side connect the inner wall of box (133) with the cross bar by being welded and fixed.
5. buoyancy teaching demonstration structure according to claim 4, it is characterised in that: the length of the sliding slot (134) and institute
The ratio of the total length of cross bar (131) is stated between 3/2 to four/3rds, the pouring weight one (41) or the pouring weight two
(42) ratio of height and rack gear (2351) length of lifting rack bar (235) half to 4/5ths it
Between.
6. buoyancy teaching demonstration structure according to claim 5, it is characterised in that: the bottom of the bottom base (111)
Front-rear direction is provided with the opening one (112) for penetrating through the bottom base (111), the bottom or so of the bottom base (111)
Direction is provided with the opening two (113) for penetrating through the bottom base (111).
7. buoyancy teaching demonstration structure according to claim 6, it is characterised in that: the upper plane of the lift master (231)
On be provided with left fixed bracket (242) and right fixed bracket (243), the left fixed bracket (242) and right fixed branch
The fixation lasso for fixing the square water cup (5), left measuring cup (61) and right measuring cup (62) is fixed on frame (243)
(241).
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| CN201610722239.9A CN106057034B (en) | 2016-08-25 | 2016-08-25 | Buoyancy teaching demonstration structure |
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| CN106057034A (en) | 2016-10-26 |
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Denomination of invention: Structure of buoyancy teaching demonstration Effective date of registration: 20231114 Granted publication date: 20190614 Pledgee: China Construction Bank Corporation Nanjing Jiangning sub branch Pledgor: Nanjing Muxin Technology Co.,Ltd. Registration number: Y2023980065111 |
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