CN106057034A - Buoyancy teaching demonstration structure - Google Patents
Buoyancy teaching demonstration structure Download PDFInfo
- Publication number
- CN106057034A CN106057034A CN201610722239.9A CN201610722239A CN106057034A CN 106057034 A CN106057034 A CN 106057034A CN 201610722239 A CN201610722239 A CN 201610722239A CN 106057034 A CN106057034 A CN 106057034A
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- lifting
- cup
- pedestal
- hole
- pouring weight
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 241000190070 Sarracenia purpurea Species 0.000 claims abstract description 19
- 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 75
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 21
- 239000011780 sodium chloride Substances 0.000 claims description 21
- 238000012360 testing method Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000005484 gravity Effects 0.000 abstract description 2
- 238000002474 experimental method Methods 0.000 description 12
- 238000013461 design Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 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
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Algebra (AREA)
- Pure & Applied Mathematics (AREA)
- Educational Administration (AREA)
- Computational Mathematics (AREA)
- Business, Economics & Management (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Level Indicators Using A Float (AREA)
Abstract
The invention discloses a buoyancy teaching demonstration structure which comprises a bearing mechanism, a lifting mechanism, a weight measuring mechanism, weights, a water cup, a measuring cup and the like, wherein the bearing mechanism has a bearing effect; the lifting mechanism is capable of lifting the water cup and the measuring cup, and meanwhile, the weights are fixed below the weight measuring mechanism; and when the lifting mechanism carries out the lifting operation, the water cup and the measuring cup move upwards, water flows out from the water cup when the weights enter the water cup, the value displayed by the weight measuring mechanism is reduced, and the overflowing water flows into the measuring cup. After the test ends, the lifting mechanism is moved down to the position above the bearing mechanism, at the moment, the weight of the overflowing water in the measuring cup is equal to the reduced value displayed by the weight measuring mechanism, and that is to say, the buoyancy is equal to the gravity of discharged water. According to the invention, the buoyancy test is precisely demonstrated, the integral structure is reasonable, the operation is simple, the interesting teaching is ensured, and the buoyancy teaching demonstration structure can be widely applied to physical teaching.
Description
Technical field
The present invention relates to a kind of physical teaching aid, specifically a kind of buoyancy teaching demonstration structure.
Background technology
Students, when learning book knowledge, aids in teaching aid and experimental provision, to the understanding deepening knowledge
Having greatly help with grasping, especially for the student of the relevant knowledges such as first contacts study buoyancy, physics is real with hall
Experiment device is the most necessary.And in existing physics teaching, just lack such in-class experiment device, teacher or completely
Rely on book knowledge to impart knowledge to students, or oneself make some nonstandard Self-made Realia to help student to understand physical knowledge,
Either the reliability of teaching aid and the teaching purpose of reality all do not reach preferable effect.
Summary of the invention
The technical problem to be solved in the present invention, is to provide a kind of buoyancy teaching demonstration structure, it is possible to solve in prior art
Existing the problems referred to above.
The present invention for achieving the above object, is achieved through the following technical solutions:
A kind of buoyancy teaching demonstration structure, including load carrier, described load carrier includes the pedestal being arranged on desktop, described
The left part of pedestal is provided with upright post connecting plate, and described upright post connecting plate is provided with the column vertical with described pedestal, described
The right part of pedestal is provided with the second upright post connecting plate, and described second upright post connecting plate is provided with vertical with described pedestal
Two columns, are provided perpendicular to described column and described between upper end and the upper end of described second column of described column
The cross bar of two columns, on the low order end of described cross bar, plane arranges the chute extended on the left of oriented described cross bar, at described pedestal
On be positioned at the right side of described column and be provided with lifting mechanism, described lifting mechanism includes the lifting pedestal fixing with described pedestal,
Being provided with through hole on the leading flank of described lifting pedestal, left end and the right-hand member of the upper plane of described lifting pedestal are respectively arranged with a left side
Lifting hole, location and hole, right lifting location, in the upper plane of described lifting pedestal and be positioned at hole and the described right side, described left lifting location
Lifting location is provided with lifting gear holding tank and lifting hole, middle part between hole, and lifting hole, described middle part is positioned at described lifting gear
The right side of holding tank and both connect setting, described through hole connects setting, described lifting gear with described lifting gear holding tank
Being provided with the lifting gear adapted with described lifting gear holding tank size and shape in holding tank, described lifting gear is along week
To being provided with engaging tooth and its home position is equipped with lifting gear shaft, one end of described lifting gear shaft passes described lifting tooth
The center of circle of wheel is rotatably assorted with the axis hole on the corresponding inwall of described lifting gear grooved, and the other end of described lifting gear shaft passes
Described through hole assembles with an end of rocking arm connecting rod, and the other end of described rocking arm connecting rod is equipped with lifting rocking arm, described
The lifting gear top when assembling with described lifting gear grooved is less than the top of described lifting gear grooved, on described lifting pedestal
Being provided with and the lift master of plane contact on described lifting pedestal, the left end of the lower plane of described lift master and right-hand member are provided with point
Do not position hole and the left location bar of described right lifting location hole assembling and right location bar with described left lifting, under described lift master
Plane and be provided with between described left location bar and described right location bar and lifting hole, described middle part assembling lifting tooth bar
Bar, the left side of described lifting rack bar is provided with tooth bar, and described tooth bar engages with the engaging tooth on described lifting gear, described act
The upper plane centre position of stage is provided with water tumbler and fixes groove, and described water tumbler is fixed and is fixed with opening up square water on groove
Cup, described square water cup is internally provided with the dividing plate extended along the longitudinal direction so that described square water cup is separated into left cup and the right side
Cup, the upper end, left side of described left cup is provided with left outlet pipe, and the upper end, right side of described right cup is provided with right outlet pipe, institute
State the upper plane of lift master to be positioned at described water tumbler and fix the left side of groove and be provided with left measuring cup and fix groove, the upper plane of described lift master
Be positioned at described water tumbler to fix the right side of groove and be provided with right measuring cup and fix groove, described left measuring cup fix be provided with on groove opening up
Left measuring cup, described right measuring cup fixes and is provided with opening up right measuring cup on groove, and described left outlet pipe stretches into described left measuring cup
Opening, described right outlet pipe stretches into the opening of described right measuring cup, described left cup built with pure water, described right cup built with
Saline, described pure water or the described saline height in described left cup or described right cup and described left outlet pipe or described
The height of the bottom of right outlet pipe is equal, and described chute is equipped with the pouring weight measuring mechanism coordinated with described slide,
Described pouring weight measuring mechanism includes measuring mechanism body, and described measuring mechanism body is provided with the most through slip
Opening, the top of described slip opening is provided with the slide protrusion assembled with described slide, described slide mechanism body
It is provided with sliding handle in upper plane, the lower plane of described slide mechanism body is fixed with electronic scale one, described electronic scale one
Lower plane be provided with the hook one and hook two, described pouring weight one or described pouring weight being respectively used to hang pouring weight one and pouring weight two
Described pouring weight one or described heavy after two assemble with described hook one or described hook two and when described lifting mechanism is positioned at minimum point
The bottom surface of block two is higher than described pure water or the horizontal plane of described saline, and the bottom surface of described pouring weight and described pure water or described
The distance of the horizontal plane of saline is less than 1/5th of the tooth bar length of described lifting rack bar, the leading flank of described electronic scale one
On be provided with for showing described pouring weight one weight and the display screen one of described pouring weight two weight and display screen two, described base respectively
Planar front portion and be positioned at the right side of described lifting mechanism and be provided with electronic scale two on seat.
As another kind limit, described column is one-body molded with described upright post connecting plate, described upright post connecting plate and
Described pedestal is bolted.Described second column is one-body molded with described second upright post connecting plate, and described second column is even
Fishplate bar is bolted with described pedestal.
As restriction, the left part of described cross bar is provided with cross bar and connects box, and described cross bar connects the left side of box and arranges
Having bolt hole, on the left of described column, upper surface is provided with screwed hole, and described cross bar connects box and is set in the upper end of described column also
Realize tightening with fixing described column and described cross bar through described bolt hole and described screwed hole by connecting bolt.
Limiting as another kind, the inwall that the right side of described column upper end is connected box with described cross bar is solid by welding
Fixed.
As further limiting, the length of described chute arrives 2/3rds with the ratio of the total length of described cross bar
Between 3/4ths, the ratio of the tooth bar length of the height of described pouring weight and described lifting rack bar 1 to five/2nds/
Between four.
As restriction, the bottom fore-and-aft direction of described pedestal is provided with the opening one of through described pedestal, described pedestal
Bottom left and right directions is provided with the opening two of through described pedestal.
Left fixed support and right fixed support, described left fixed support it is provided with in the upper plane of described lift master
With the fixing lasso being fixed with on right fixed support for fixing described square water cup, left measuring cup and right measuring cup.
Due to the fact that and have employed above-mentioned structure, its compared with prior art, acquired technological progress is:
The height of water tumbler and measuring cup can be adjusted by the present invention by lifting mechanism, makes water tumbler and measuring cup move up, when
When pouring weight enters water tumbler, water overflows, and pouring weight measuring mechanism display numerical value diminishes, and water flows into measuring cup after overflowing, now measure in measuring cup
Overflow the quantity that the weight of water diminishes with pouring weight measuring mechanism display numerical value, i.e. whether buoyancy is equal to the gravity of draining.Therefore originally
Invention can accurately carry out buoyancy demonstration by appeal structure, simple to operate, and ensures teaching vivid and interesting.
To sum up, practicality of the present invention is high, it is possible to meets buoyancy teaching demand, and can reach good teaching efficiency.
Accompanying drawing explanation
Accompanying drawing is for providing a further understanding of the present invention, and constitutes a part for description, with embodiments of the invention
It is used for together explaining the present invention, is not intended that limitation of the present invention.
Fig. 1 is the overall structure schematic diagram described in the embodiment of the present invention.
Fig. 2 is the structural representation of the load carrier described in the embodiment of the present invention.
Fig. 3 is the structural representation of the lifting mechanism described in the embodiment of the present invention.
Fig. 4 is the structural representation of the 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 two, 121-column, 122-column
Connecting plate, 131-cross bar, 132-connecting bolt, 133-cross bar connection box, 134-chute, 135-the second cross bar connection box, 136,
Second connecting bolt 141-the second column, 142-the second upright post connecting plate, 151-electronic scale two, 152-second display screen, 2-lifts
Rising mechanism, 211-lifts pedestal, hole, 212-right lifting location, and hole, 213-left lifting location, 214-lifts gear holding tank, 215-
Lifting hole, middle part, 216-through hole, 221-lifts gear, and 222-lifts gear shaft, 223-rocking arm connecting rod, and 224-lifts rocking arm,
231-lift master, the left measuring cup of 232-fixes groove, and 233-water tumbler fixes groove, 234-left location bar, and 235-lifts rack bar, 2351-
Tooth bar, 236-right location bar, the right measuring cup of 237-fixes groove, and 241-fixes lasso, the left fixed support of 242-, fixing of the 243-right side
Frame, 3-pouring weight measuring mechanism, 311-measuring mechanism body, 312-slip opening, 313-slide protrusion, 331-electronic scale one,
332-display screen one, 333-display screen two, 341-hook one, 342-hook two, 41-pouring weight one, 42-pouring weight two, 5-square water
Cup, the left outlet pipe of 51-, the right outlet pipe of 52-, 53-dividing plate, the left cup of 54-, the right cup of 55-, the left measuring cup of 61-, the right measuring cup of 62-.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, the present invention is expanded on further.In the following detailed description, only by explanation
Mode describes some one exemplary embodiment of the present invention.Undoubtedly, those of ordinary skill in the art will be consequently realised that,
In the case of without departing from the spirit and scope of the present invention, by various different modes, described embodiment can be repaiied
Just.Therefore, accompanying drawing and description are inherently the most illustrative rather than are used for limiting scope of the claims.
As Figure 1-Figure 4, buoyancy teaching demonstration structure according to embodiments of the present invention, including load carrier 1, described in hold
Mounted mechanism 1 includes the pedestal 111 being arranged on desktop, and the left part of described pedestal is provided with upright post connecting plate 122, described column
Being provided with the column 121 vertical with described pedestal 111 on connecting plate 122, the right part of described pedestal is provided with the second column even
Fishplate bar 142, described second upright post connecting plate 142 is provided with second column 141 vertical with described pedestal 111, described column
It is provided perpendicular to described column 121 and described second column between upper end and the upper end of described second column 141 of 121
The cross bar 131 of 141, on the low order end of described cross bar 131, plane arranges the chute 134 extended on the left of oriented described cross bar 131,
The right side being positioned at described column 121 on described pedestal 111 is provided with lifting mechanism 2, and described lifting mechanism 2 includes and described pedestal
Fixing lifting pedestal 211, the leading flank of described lifting pedestal 211 is provided with through hole 216, described lifting pedestal 211 upper
The left end of plane and right-hand member are respectively arranged with left lifting hole 213, location and hole 212, right lifting location, described lifting pedestal 211
In upper plane and it is provided with lifting gear between described left lifting hole 213, location and hole 212, described right lifting location to accommodate
Groove 214 and lifting hole, middle part 215, lifting hole, described middle part 215 is positioned at the right side of described lifting gear holding tank 214 and both connect
Logical setting, described through hole 216 connects setting, arranges in described lifting gear holding tank 214 with described lifting gear holding tank 214
Having the lifting gear 221 adapted with described lifting gear holding tank 214 size and shape, described lifting gear 221 is circumferentially
Being provided with engaging tooth and its home position is equipped with lifting gear shaft 222, one end of described lifting gear shaft 222 passes described act
The center of circle rising gear 221 is rotatably assorted with the axis hole on the corresponding inwall of described lifting gear grooved 214, described lifting gear shaft
The other end of 222 through an end assembling of described through hole 216 with rocking arm connecting rod 223, described rocking arm connecting rod 223 another
One end is equipped with lifting rocking arm 224, and the described lifting gear 221 top when assembling with described lifting gear grooved 214 is less than institute
State the top of lifting gear grooved 214, described lifting pedestal 211 is provided with and the act of plane contact on described lifting pedestal 211
Stage 231, the left end of the lower plane of described lift master 231 and right-hand member are provided with and position hole 213 and institute with described left lifting respectively
State left location bar 234 and the right location bar 236 of hole 212 assembling of right lifting location, the lower plane of described lift master 231 and be positioned at institute
State and be provided with between left location bar 234 and described right location bar 236 and the lifting rack bar of lifting hole 215, described middle part assembling
235, the left side of described lifting rack bar 235 is provided with tooth bar 2351, described tooth bar 2351 and nibbling on described lifting gear 221
Conjunction tooth engages, and the upper plane centre position of described lift master 231 is provided with water tumbler and fixes groove 233, and described water tumbler is fixed on groove 233
Being fixed with opening up square water cup 5, described square water cup 5 is internally provided with the dividing plate 53 extended along the longitudinal direction with by institute
Stating square water cup 5 and be separated into left cup 54 and right cup 55, the upper end, left side of described left cup 54 is provided with left outlet pipe 51, institute
The upper end, right side stating right cup 55 is provided with right outlet pipe 52, and the upper plane of described lift master 231 is positioned at described water tumbler and fixes groove
The left side of 233 is provided with left measuring cup and fixes groove 232, and the upper plane of described lift master 231 is positioned at described water tumbler and fixes the right side of groove 233
Side is provided with right measuring cup and fixes groove 237, and described left measuring cup is fixed and is provided with opening up left measuring cup 61, the described right side on groove 232
Measuring cup is fixed and is provided with opening up right measuring cup 62 on groove 237, and described left outlet pipe 51 stretches into the opening of described left measuring cup 61,
Described right outlet pipe 52 stretches into the opening of described right measuring cup 62, and described left cup 54 is built with pure water, in described right cup 55
Equipped with saline, described pure water or the described saline height in described left cup 54 or described right cup 55 and described left water outlet
The height of the bottom of pipe 51 or described right outlet pipe 52 is equal, and described chute 134 being equipped with to slide with described chute 134 joins
The pouring weight measuring mechanism 3 closed, described pouring weight measuring mechanism 3 includes measuring mechanism body 311, on described measuring mechanism body 311
Being provided with the most through slip opening 312, the top of described slip opening 312 is provided with sliding with described chute 134
The slide protrusion 313 of dynamic assembling, the upper plane of described slide mechanism body 311 is provided with sliding handle 321, described skate machine
Being fixed with electronic scale 1 on the lower plane of structure body 311, the lower plane of described electronic scale 1 is provided with and is respectively used to hang
Hang hook 1 and the hook 2 342 of pouring weight 1 and pouring weight 2 42, described pouring weight 1 or described pouring weight 2 42 and described extension
Hook 1 or described hook 2 342 assembling after and described lifting mechanism 2 be positioned at described pouring weight one or described pouring weight two during minimum point
Bottom surface higher than described pure water or the horizontal plane of described saline, and the bottom surface of described pouring weight 4 and described pure water or described salt
The distance of the horizontal plane of water is less than 1/5th of tooth bar 2351 length of described lifting rack bar 235, described electronic scale 1
Leading flank on be provided with for show respectively described pouring weight one weight and the display screen 1 of described pouring weight two weight and display
Shield 2 333, planar front portion and be positioned at the right side of described lifting mechanism 2 and be provided with electronic scale 2 151 on described pedestal 111.
In embodiments of the invention, on the low order end of cross bar 131, plane arranges the chute extended on the left of oriented cross bar 131
134, the length of chute 134 can carry out respective design according to the pouring weight 4 position above square water cup 5, needs to ensure pouring weight
One and pouring weight two can move freely in the opening of square water cup 5, pouring weight measuring mechanism 3 can on chute 134 from
By sliding, by coordinating of the slide protrusion 313 on slip opening 312 and chute 134, it is effectively ensured and has connected therebetween
Reliability, is provided with electronic scale 1 simultaneously on pouring weight measuring mechanism 3, the display screen 1 on electronic scale 1 and display
Shield 2 333 and show a measurement numerical value, lifting mechanism 2 respectively when pouring weight 1 and pouring weight 2 42 be not with pure water and saline contacts
Including lifting pedestal 211, lifting gear 221 and lift master 231 etc., by shake lifting rocking arm 224, lifting tooth can be driven
Wheel 221 rotation, and then drive the lifting rack bar 235 being engaged with to move up and down, when lifting rack bar and moving upward, permissible
Make the square water cup 5 on lift master 231, left measuring cup 61 and right measuring cup 62 move upward, and then make pouring weight 1 and pouring weight two
42 respectively enter equipped with pure left cup 51 with equipped with the right cup 52 of saline, so that pure water and saline in water tumbler overflow
Go out, and separately flow in left measuring cup 61 and right measuring cup 62, when pouring weight 1 and pouring weight 2 42 sink to correct position, electronic scale
Display screen 1 and display screen 2 333 on 331 show that pouring weight 1 and pouring weight 42 another group under buoyancy is surveyed respectively
Numerical quantity, now experiment terminates, and operation lifting mechanism 2 is displaced downwardly to least significant end, now by left measuring cup 61 and right measuring cup 62 as electricity
On sub-scale 2 151, now i.e. can be shown that on second display screen 152 and measure numerical value accordingly, it is electronic scale two that this group measures numerical value
The measured value of 151 is individually subtracted left measuring cup 61 and the weight of right measuring cup 62, if this group measures numerical value is respectively equal to electronic scale
The display screen 1 of 1 is display screen 1 at the end of the display numerical value that pouring weight 1 does not contacts with pure water deducts experiment
Display numerical value, and display screen 2 333 shows at the end of at pouring weight 2 42, display numerical value with saline contacts does not deducts experiment
Shield the display numerical value of 2 333, then prove F floating=G row, (G row is equal to the water flowed in left measuring cup 61 or right measuring cup 62 or saline
Weight, F floats the display numerical value not contacted with pure water at pouring weight one equal to the display screen 1 of electronic scale 1 and deducts experiment
At the end of the display numerical value of display screen 1 or display screen 2 333 at pouring weight two not display numerical value with saline contacts deduct reality
The display numerical value of display screen 2 333 at the end of testing, i.e. pouring weight buoyancy in water or in saline).
So, the present invention can carry out buoyancy experiment under different densities liquid, improves experiment anecdote.
Further, as in figure 2 it is shown, described column 121 is one-body molded with described upright post connecting plate 122, described vertical
Post connecting plate 122 is bolted with described pedestal 111, described second column 41 and described second upright post connecting plate 142 1
Body formed, described second upright post connecting plate 142 is bolted with described pedestal 111.
In embodiments of the invention, column 121 is one-body molded with upright post connecting plate 122, easy to process and low cost of manufacture,
Upright post connecting plate 122 is bolted with pedestal 111 simultaneously, it is ensured that connection reliability.
Further, as in figure 2 it is shown, the left part of described cross bar 131 is provided with cross bar connects box 133, described cross bar is even
The left side connecing box 133 is provided with bolt hole, and on the left of described column 121, upper surface is provided with screwed hole, and described cross bar connects box
133 upper ends being set in described column 121 also realize tightening through described bolt hole and described screwed hole by connecting bolt 132
With fixing described column 121 and described cross bar 131.
Meanwhile, the present invention is correspondingly provided with second cross bar connection box the 135, second connecting bolt in pedestal 111 right part
136, the second column 141 and the second upright post connecting plate 142, the connection fixed form of said structure is identical with left part, so,
Transverse slat 131 fixing-stable can be ensured.
Further, the length of described chute 134 and the ratio of the total length of described cross bar 131 are at 2 to four/3rds points
Three between, the ratio of tooth bar 2351 length of the height of described pouring weight 4 and described lifting rack bar 235 is 1 to five/2nds
Between/tetra-.
In embodiments of the invention, the ratio of the total length of the length of chute 134 and cross bar 131 is at 2 to four/3rds points
Three between, so can ensure the pouring weight measuring mechanism 3 sliding distance in chute, to further facilitate the operation of experiment；With
Time the height of pouring weight 4 and the ratio of tooth bar 2351 length of lifting rack bar 235 between 4/1 to five/2nds, so
Both can ensure that pouring weight can have enough sinking distances in pure water or saline, simultaneously because after pouring weight and hook assemble and
When lifting mechanism 2 is positioned at minimum point, the bottom surface of pouring weight and the distance of described pure water or the horizontal plane of saline are less than lifting rack bar
/ 5th of tooth bar 2351 length of 235, so also ensure that if the density of selected pouring weight 4 is more than pure water or saline
During density, pouring weight can sink to wherein completely, to ensure experiment purpose.
Further, as it can be seen, the bottom fore-and-aft direction of described pedestal 111 is provided with opening of through described pedestal 111
Mouth 1, the bottom left and right directions of described pedestal 111 is provided with the opening 2 113 of through described pedestal 111.
Thus, with the design of opening 2 113, opening 1 can ensure that pedestal 111 contacts with the stable of desktop.
Preferably, the upper plane of described lift master 231 is provided with left fixed support 242 and right fixed support
243, described left fixed support 242 and right fixed support 243 are fixed with for fix described square water cup 5, left measuring cup 61 with
And the fixing lasso 241 of right measuring cup 62.
So, can prevent from toppling over during experiment causing the failure of an experiment.
The foregoing is only the schematic detailed description of the invention of the present invention, be not limited to the scope of the present invention.Any
Those skilled in the art, the equivalent variations made on the premise of without departing from the design of the present invention and principle and amendment, all
The scope of protection of the invention should be belonged to.
Claims (7)
1. a buoyancy teaching demonstration structure, it is characterised in that: include that load carrier (1), described load carrier (1) include arranging
Pedestal (111) on desktop, the left part of described pedestal is provided with upright post connecting plate (122), described upright post connecting plate (122)
On be provided with the column (121) vertical with described pedestal (111), the right part of described pedestal is provided with the second upright post connecting plate
(142), described second upright post connecting plate (142) is provided with second column (141) vertical with described pedestal (111), described
It is provided perpendicular to described column (121) and institute between upper end and the upper end of described second column (141) of column (121)
Stating the cross bar (131) of the second column (141), on the low order end of described cross bar (131), plane arranges oriented described cross bar (131) left side
The chute (134) that side extends, the right side being positioned at described column (121) on described pedestal (111) is provided with lifting mechanism (2),
Described lifting mechanism (2) includes the lifting pedestal (211) fixing with described pedestal, on the leading flank of described lifting pedestal (211)
Being provided with through hole (216), the left end of the upper plane of described lifting pedestal (211) and right-hand member are respectively arranged with hole, left lifting location
(213) and right lifting location hole (212), in the upper plane of described lifting pedestal (211) and be positioned at described left lifting location hole
(213) and it is provided with lifting gear holding tank (214) and lifting hole, middle part (215), institute between described right lifting hole, location (212)
State middle part lifting hole (215) and be positioned at the right side of described lifting gear holding tank (214) and both connect setting, described through hole
(216) connect setting with described lifting gear holding tank (214), be provided with described in described lifting gear holding tank (214)
The lifting gear (221) that lifting gear holding tank (214) size and shape adapts, described lifting gear (221) circumferentially sets
Being equipped with engaging tooth and its home position is equipped with lifting gear shaft (222), one end of described lifting gear shaft (222) is through described
The center of circle of lifting gear (221) is rotatably assorted with the axis hole on the corresponding inwall of described lifting gear grooved (214), described lifting tooth
The other end of wheel shaft (222) is through an end assembling of described through hole (216) with rocking arm connecting rod (223), and described rocking arm is even
The other end of extension bar (223) be equipped with lifting rocking arm (224), described lifting gear (221) with described lifting gear grooved (214)
Top during assembling, less than the top of described lifting gear grooved (214), described lifting pedestal (211) is provided with and described lifting
The lift master (231) of the upper plane contact of pedestal (211), the left end of the lower plane of described lift master (231) and right-hand member are provided with point
Left location bar (234) do not assembled with described left lifting hole, location (213) and described right lifting hole, location (212) and right location bar
(236), the lower plane and being positioned between described left location bar (234) and described right location bar (236) of described lift master (231) sets
Being equipped with the lifting rack bar (235) assembled with lifting hole, described middle part (215), the left side of described lifting rack bar (235) is arranged
Tooth bar (2351), described tooth bar (2351) is had to engage with the engaging tooth on described lifting gear (221), described lift master (231)
Upper plane centre position be provided with water tumbler and fix groove (233), described water tumbler is fixed and is fixed with opening up side on groove (233)
Shape water tumbler (5), described square water cup (5) is internally provided with the dividing plate (53) extended along the longitudinal direction with by described square water cup
(5) being separated into left cup (54) and right cup (55), the upper end, left side of described left cup (54) is provided with left outlet pipe (51), institute
The upper end, right side stating right cup (55) is provided with right outlet pipe (52), and the upper plane of described lift master (231) is positioned at described water tumbler
The left side of fixing groove (233) is provided with left measuring cup and fixes groove (232), and the upper plane of described lift master (231) is positioned at described water tumbler
The right side of fixing groove (233) is provided with right measuring cup and fixes groove (237), and described left measuring cup is fixed and is provided with opening court on groove (232)
On left measuring cup (61), described right measuring cup is fixed and is provided with opening up right measuring cup (62), described left outlet pipe on groove (237)
(51) stretching into the opening of described left measuring cup (61), described right outlet pipe (52) stretches into the opening of described right measuring cup (62), a described left side
Cup (54) is built with pure water, and described right cup (55) is built with saline, and described pure water or described saline are at described left cup
The bottom of the height in body (54) or described right cup (55) and described left outlet pipe (51) or described right outlet pipe (52)
The most equal, described chute (134) is equipped with the pouring weight measuring mechanism (3) being slidably matched with described chute (134), described heavy
Block measuring mechanism (3) includes measuring mechanism body (311), described measuring mechanism body (311) is provided with and passes through in left-right direction
Logical slip opening (312), the top of described slip opening (312) is provided with and the slip of described chute (134) slidable fit
Protruding (313), the upper plane of described slide mechanism body (311) is provided with sliding handle (321), described slide mechanism body
(311) being fixed with electronic scale one (331) on lower plane, the lower plane of described electronic scale one (331) is provided with and is respectively used to hang
Hang pouring weight one (41) and the hook one (341) of pouring weight two (42) and hook two (342), described pouring weight one (41) or described pouring weight two
(42) after assembling with described hook one (341) or described hook two (342) and described in when described lifting mechanism (2) is positioned at minimum point
The bottom surface of pouring weight one or described pouring weight two is higher than described pure water or the horizontal plane of described saline, and the bottom surface of described pouring weight (4)
With tooth bar (2351) length that the distance of described pure water or the horizontal plane of described saline is less than described lifting rack bar (235)
1/5th, the leading flank of described electronic scale one (331) is provided with for showing described pouring weight one weight and described heavy respectively
The display screen one (332) of block two weight and display screen two (333), described pedestal (111) is gone up planar front portion and is positioned at described lifting
The right side of mechanism (2) is provided with electronic scale two (151).
Buoyancy teaching demonstration structure the most according to claim 1, it is characterised in that: described column (121) is with described
Upright post connecting plate (122) is one-body molded, and described upright post connecting plate (122) is bolted with described pedestal (111), and described
Two columns (41) are one-body molded with described second upright post connecting plate (142), described second upright post connecting plate (142) and described pedestal
(111) it is bolted.
Buoyancy teaching demonstration structure the most according to claim 2, it is characterised in that: the left part of described cross bar (131) sets
Being equipped with cross bar and connect box (133), described cross bar connects the left side of box (133) and is provided with bolt hole, described column (121) left side
Upper surface is provided with screwed hole, and described cross bar connects box (133) and is set in the upper end of described column (121) and passes through connecting bolt
(132) realize tightening with fixing described column (121) and described cross bar (131) through described bolt hole and described screwed hole.
Buoyancy teaching demonstration structure the most according to claim 3, it is characterised in that: the right-hand member of described column (121) upper end
Face is connected the inwall of box (133) by being welded and fixed with described cross bar.
Buoyancy teaching demonstration structure the most according to claim 4, it is characterised in that: the length of described chute (134) and institute
State the ratio of total length of cross bar (131) between 3/2 to four/3rds, the height of described pouring weight (4) and described lifting
The ratio of tooth bar (2351) length of rack bar (235) is between 4/1 to five/2nds.
Buoyancy teaching demonstration structure the most according to claim 5, it is characterised in that: before and after the bottom of described pedestal (111)
Direction is provided with the opening one (112) of through described pedestal (111), and the bottom left and right directions of described pedestal (111) is provided with and passes through
The opening two (113) of logical described pedestal (111).
Buoyancy teaching demonstration structure the most according to claim 6, it is characterised in that: the upper plane of described lift master (231)
On be provided with fixing of left fixed support (242) and right fixed support (243), described left fixed support (242) and the right side
It is fixed with on frame (243) for fixing described square water cup (5), left measuring cup (61) and the fixing lasso of right measuring cup (62)
(241).
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| CN106057034B (en) | 2019-06-14 |
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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 |