CN109285428A - Buoyancy demonstration teaching aid - Google Patents
Buoyancy demonstration teaching aid Download PDFInfo
- Publication number
- CN109285428A CN109285428A CN201811111240.3A CN201811111240A CN109285428A CN 109285428 A CN109285428 A CN 109285428A CN 201811111240 A CN201811111240 A CN 201811111240A CN 109285428 A CN109285428 A CN 109285428A
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- lifting
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- pouring weight
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 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 62
- 241000190070 Sarracenia purpurea Species 0.000 claims description 21
- 238000000746 purification Methods 0.000 claims description 2
- 238000002474 experimental method Methods 0.000 abstract description 11
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract 1
- 238000003860 storage Methods 0.000 description 10
- 239000003153 chemical reaction reagent Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 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)
- Theoretical Computer Science (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Business, Economics & Management (AREA)
- Mathematical Physics (AREA)
- Algebra (AREA)
- Computational Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Pure & Applied Mathematics (AREA)
- Devices For Dispensing Beverages (AREA)
Abstract
The invention discloses a kind of buoyancy demonstration teaching aids, 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 demonstration teaching aid.
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 demonstration teaching aid, is able to solve and is deposited in the prior art
The above problem.
The present invention to achieve the above object, is achieved through the following technical solutions: a kind of buoyancy demonstration teaching aid, including carrying
Mechanism, the load carrier include the pedestal being set on desktop, and the left part of the pedestal is provided with upright post connecting plate, described
Be provided with the column vertical with the pedestal on upright post connecting plate, the upper end of the column be provided perpendicular to the column and
Horizontal-extending cross bar to the right, plane is provided with to the sliding slot extended on the left of the cross bar, institute on the right end of the cross bar
It states the bottom at the right side edge of sliding slot and is provided with Anti-off bolt, be located on the right side of the column on the pedestal and be provided with act
Mechanism is risen, the lifting mechanism includes the lifting pedestal fixed with the pedestal, is provided on the leading flank of the lifting pedestal
Through-hole, the left end of the upper plane of the lifting pedestal and right end are respectively arranged with left lifting location hole and right lifting location hole, institute
It states in the upper plane of lifting pedestal and is provided with lifting tooth between the left lifting location hole and the right lifting location hole
It takes turns holding tank and middle part lifts hole, middle part lifting hole is located at the right side of the lifting gear holding tank and the two connection is set
It sets, the through-hole is connected to setting with the lifting gear holding tank, is provided with and the lifting in the lifting gear holding tank
The adaptable lifting gear of gear holding tank size and shape, the lifting gear is circumferentially arranged engaging tooth and its center of circle position
It sets and is equipped with lifting gear shaft, one end of the lifting gear shaft passes through the center of circle of the lifting gear and the lifting gear holds
The axis hole received on the correspondence inner wall of slot is rotatably assorted, and the other end of the lifting gear shaft passes through the through-hole and rocker arm connecting rod
The assembly of an end, the other end of the rocker arm connecting rod is equipped with lifting rocker arm, the lifting gear with the lifting
Top when gear holding tank assembles lower than the top of the lifting gear holding tank, be provided on the lifting pedestal with it is described
Lift the lift master of plane contact on pedestal, the left end of the lower plane of the lift master and right end be provided with respectively with the left act
Rise location hole and it is described it is right lifting location hole assembly left locating rod and right locating rod, the lower plane of the lift master and be located at institute
State the lifting rack bar being provided between left locating rod and the right locating rod with middle part lifting hole assembly, the lifting tooth
Rack gear is provided on the left of bar, the rack gear engages tooth engagement, the upper plane of the lift master on the lifting gear
Right side is provided with cup fixing groove, and opening up square water cup is fixed in the cup fixing groove, the square water cup
Left side upper end is provided with water outlet, and the water outlet is connected with outlet pipe, and the upper plane of the lift master is located at the cup
It is provided with measuring cup fixing groove on the left of fixing groove, opening up measuring cup, the outlet pipe are provided in the measuring cup fixing groove
The opening of the measuring cup is protruded into, the square water cup is provided with pure water, height of the pure water in the square water cup
It is with the lowermost of the water outlet of square water cup height equal, it is equipped on the sliding slot and is slidably matched with the sliding slot
Pouring weight measuring mechanism, the pouring weight measuring mechanism include measuring mechanism ontology, are provided on the measuring mechanism ontology along left and right
The top of the sliding opening of direction perforation, the sliding opening is provided with the slide protrusion with the sliding slot slidable fit, described
It is provided with sliding handle in the upper plane of sliding equipment ontology, is fixed with electronic scale on the lower plane of the sliding equipment ontology
One, the lower plane of the electronic scale is provided with the hook for hanging pouring weight, after the pouring weight is assembled with the hook and described
The bottom surface that lifting mechanism is located at pouring weight when minimum point is higher than the horizontal plane of the pure water, and the bottom surface of the pouring weight and institute
The distance for stating pure water horizontal plane is less than 1/5th of the rack gear length for lifting rack bar, the front side of the electronic scale one
It is provided with the display screen for showing the pouring weight weight on face, planar front portion and is located at the lifting mechanism on the pedestal
Right side is provided with electronic scale two.
As restriction, on the pedestal plane and be located at the electronic scale two dead astern be provided with storage box, the storage
The upper left side of object box is provided with the reagent bottle fixing groove for fixating reagent bottle, and the upper right side of the storage box is provided with for solid
The pouring weight fixing groove of the fixed pouring weight.
Limited as another kind, the column and the upright post connecting plate are integrally formed, the upright post connecting plate with
The pedestal is bolted.
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 the column, and the cross bar connection box is set in the upper end of the column simultaneously
The bolt hole is passed through by connection bolt and threaded hole realization is tightened with the fixation column and the cross bar.
It is limited as another kind, the inner wall that the right side of the upper end of the column connect box with the cross bar is solid by welding
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 height of the pouring weight and it is described lifting rack bar rack gear length ratio half to five/
Between four.
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.
The present invention is due to using above-mentioned structure, and compared with prior art, acquired technological progress is: this hair
It is bright to be adjusted by height of the lifting mechanism to cup and measuring cup, move up cup and measuring cup, when pouring weight enters
Water overflows when cup, and pouring weight measuring mechanism shows that numerical value becomes smaller, and water flows into measuring cup after overflowing, and measures overflow water in measuring cup at this time
The gravity whether quantity that weight and pouring weight measuring mechanism display numerical value become smaller, i.e. buoyancy are equal to draining.Therefore the present invention can lead to
It crosses appeal structure and accurately carries out buoyancy demonstration, it is easy to operate, and guarantee teaching vivid and 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 load carrier described in the embodiment of the present invention
Structural schematic diagram；Fig. 3 is the structural schematic diagram of lifting mechanism described in the embodiment of the present invention；Fig. 4 is institute of the embodiment of the present invention
The structural schematic diagram for the pouring weight measuring mechanism stated.
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- connection bolt, 133- cross bar connection box, 134- sliding slot, 135- Anti-off bolt, 141- storage box,
142- reagent bottle fixing groove, 143- pouring weight fixing groove, 151- electronic scale two, 152- second display screen, 2- lifting mechanism, 211- are lifted
Liter pedestal, the right lifting location hole of 212-, the left lifting location hole of 213-, 214- lift gear holding tank, lift hole in the middle part of 215-,
216- through-hole, 221- lifting gear, 222- lifting gear shaft, 223- rocker arm connecting rod, 224- lifting rocker arm, 231- lift master,
232- measuring cup fixing groove, 233- cup fixing groove, the left locating rod of 234-, 235- lift rack bar, 2351- rack gear, and the right side 236- is determined
Position bar, 3- pouring weight measuring mechanism, 311- measuring mechanism ontology, 312- sliding opening, 313- slide protrusion, 331- electronic scale one,
332- display screen, 341- hook, 4- pouring weight, 5- square water cup, 6- measuring cup, 7- reagent bottle.
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 demonstration teaching aid according to an embodiment of the present invention, including load carrier 1, the carrying machine
Structure 1 includes the pedestal 111 being set on desktop, and the left part of the pedestal is provided with upright post connecting plate 122, the column connection
The column 121 vertical with the pedestal 111 is provided on plate 122, the upper end of the column 121 is provided perpendicular to described vertical
Column 121 and to the right horizontal-extending cross bar 131, plane is provided with left to the cross bar 131 on the right end of the cross bar 131
The sliding slot 134 that side extends, the bottom at the right side edge of the sliding slot 134 is provided with Anti-off bolt 135, in the pedestal 111
The upper right side positioned at the column 121 is provided with lifting mechanism 2, and the lifting mechanism 2 includes the act fixed with the pedestal 111
Pedestal 211 is risen, through-hole 216, a left side for the upper plane of the lifting pedestal 211 are provided on the leading flank of the lifting pedestal 211
End and right end are respectively arranged with left lifting location hole 213 and right lifting location hole 212, in the upper plane for lifting pedestal 211
And lifting gear holding tank 214 is provided between the left lifting location hole 213 and the right lifting location hole 212 in
Portion lifts hole 215, and middle part lifting hole 215 is located at the right side of the lifting gear holding tank 214 and the two connection setting, institute
State through-hole 216 and be connected to setting with the lifting gear holding tank 214, be provided in the lifting gear holding tank 214 with it is described
The adaptable lifting gear 221 of 214 size and shape of gear holding tank is lifted, the lifting gear 221 is circumferentially arranged to be nibbled
It closes tooth and its center location is equipped with lifting gear shaft 222, one end of the lifting gear shaft 222 passes through the lifting gear
221 center of circle is rotatably assorted with the axis hole on the corresponding inner wall of the lifting gear holding tank 214, the lifting gear shaft 222
The other end pass through the through-hole 216 and an end of rocker arm connecting rod 223 is assembled, the rocker arm connecting rod 223 it is another
End is equipped with lifting rocker arm 224, and top of the lifting gear 221 when assembling with the lifting gear holding tank 214 is lower than
The top of the lifting gear holding tank 214, is provided on the lifting pedestal 211 and connects with plane on the lifting pedestal 211
The lift master 231 of touching, 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 the left locating rod 234 assembled of the right lifting location hole 212) and right locating rod 236, the lower plane of the lift master 231
And the lifting assembled with middle part lifting hole 215 is provided between the left locating rod 234 and the right locating rod 236
Rack bar 235, the left side of the lifting rack bar 235 are provided with rack gear 2351, the rack gear 2351 and the lifting gear 221
On engagement tooth engagement, be provided with cup fixing groove 233, the cup fixing groove 233 on the right side of the upper plane of the lift master 231
On be fixed with opening up square water cup 5, the left side upper end of the square water cup 5 is provided with water outlet, the water outlet
It is connected with outlet pipe, the left side that the upper plane of the lift master 231 is located at the cup fixing groove 233 is provided with measuring cup fixing groove
232, opening up measuring cup 6 is provided in the measuring cup fixing groove 232, and the outlet pipe protrudes into the opening of the measuring cup 6, institute
It states square water cup 5 and is provided with pure water, height of the pure water in the square water cup 5 goes out with the square water cup 5
The lowermost height at the mouth of a river is equal, and the pouring weight measuring mechanism being slidably matched with the sliding slot 134 is equipped on the sliding slot 134
3, the pouring weight measuring mechanism 3 includes measuring mechanism ontology 311, is provided in left-right direction on the measuring mechanism ontology 311
The top of the sliding opening 312 of perforation, the sliding opening 312 is provided with the slide protrusion with 134 slidable fit of sliding slot
313, be provided with sliding handle 321 in the upper plane of the sliding equipment ontology 311, the sliding equipment ontology 311 it is lower flat
Electronic scale 1 is fixed on face, the lower plane of the electronic scale 331 is provided with the hook 341 for hanging pouring weight 4, described
After pouring weight 4 and the hook assembly and the lifting mechanism 2 is located at the bottom surface of pouring weight when minimum point higher than the pure water
Horizontal plane, and the bottom surface of the pouring weight 4 at a distance from the pure water horizontal plane be less than it is described lifting rack bar 235 rack gear
/ 5th of 2351 length are provided with the display for showing the pouring weight weight on the leading flank of the electronic scale 1
Screen 332 planar front portion and is located at the right side of the lifting mechanism 2 and is provided with electronic scale 2 151 on the pedestal 111.
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 position of the pouring weight 4 above square water cup 5, need to guarantee pouring weight 4
It can be moved freely in the opening of square water cup 5, when being assembled, screw off the Anti-off bolt 135 of 134 right end of sliding slot,
So that the sliding slot of cross bar 131 is partially passed through the sliding opening 312 of measuring mechanism ontology 311, makes the slide protrusion in sliding opening 312
313 are slidably matched with sliding slot 134, tighten Anti-off bolt 135 later, prevent pouring weight measuring mechanism 3 from falling off, at this time pouring weight measuring machine
Structure 3 can be free to slide on sliding slot 134, by the cooperation of slide protrusion 313 and sliding slot 134 in sliding opening 312, effectively
It ensure that the reliability connected therebetween, while being provided with electronic scale 331 on pouring weight measuring mechanism 3, it is aobvious on electronic scale 331
Display screen 332 shows that a measurement numerical value, lifting mechanism 2 include lifting pedestal 211, lifting tooth when pouring weight 4 is not contacted with pure water
221 and lift master 231 etc. are taken turns, lift rocker arm 224 by shaking, lifting gear 221 can be driven to rotate, and then drive therewith
The lifting rack bar 235 of engagement moves up and down, and when lifting rack bar moves upwards, can make the square water on lift master 231
Cup 5 and measuring cup 6 move upwards, and then pouring weight 4 is made to enter cup, so that the pure water in cup overflows, and flow into measuring cup,
When pouring weight sinks to suitable position, the display screen 332 on electronic scale 331 shows another measurement of the pouring weight 4 under buoyancy
Numerical value, experiment terminates at this time, and operation lifting mechanism 2 is displaced downwardly to least significant end, at this time by measuring cup 6 as on electronic scale 2 151, at this time
Measurement numerical value can be shown on second display screen 152, which is that the measured value of electronic scale 2 151 subtracts measuring cup 6
Weight, if this measurement numerical value is equal to the display numerical value that does not contact with pure water in pouring weight of display screen 332 of electronic scale 1
The display numerical value for subtracting display screen 332 at the end of testing then proves that F floats=G row, and (G row is equal to the weight of the water in inflow measuring cup 6
Amount, the floating display screen 332 equal to electronic scale 1 of F is at the end of the display numerical value that pouring weight is not contacted with pure water subtracts experiment
The display numerical value of display screen 332, the i.e. buoyancy of pouring weight in water).
It should be noted that the lowermost of the water outlet of height of the pure water in square water cup 5 and square water cup 5 is high
It spends equal, that is pure water in square water cup 5 is pure as long as pouring weight 4 is contacted with horizontal plane one just at not flowing out state
Water purification can enter measuring cup by outlet pipe, can effectively ensure that the accuracy of experiment in this way；In addition 341 dress of pouring weight 4 and hook
With rear and when lifting mechanism 2 is located at minimum point, the bottom surface of pouring weight 4 is higher than the horizontal plane of pure water, in addition in pouring weight 4 and hook
The bottom surface of pouring weight 4 is less than lifting at a distance from the pure water horizontal plane after 341 assembly and when lifting mechanism 2 is located at minimum point
/ 5th of 2351 length of rack gear of rack bar 235, in this way, lifting rack bar 235 is upward when operation lifts rocker arm 224
Pouring weight 4 and horizontal face contact can be made by moving lesser distance, facilitate the operation and progress of experiment.
Further, as shown in Figure 1 and Figure 2, plane and the dead astern positioned at the electronic scale 2 151 on the pedestal 111
It is provided with storage box 141, the upper left side of the storage box 141 is provided with the reagent bottle fixing groove 142 for fixating reagent bottle 7,
The upper right side of the storage box 141 is provided with the pouring weight fixing groove 143 for fixing the pouring weight 4.
In the embodiment of the present invention, the dead astern of electronic scale 2 333 is provided with storage box 141, and the two is all set in act
The arrangement of compact and reasonable of each component composition on pedestal 111, and storage box has been effectively ensured in the right side for rising mechanism 2 in this way
141 upper left side is provided with the reagent bottle fixing groove 142 for fixating reagent bottle 7, and the upper right side of storage box 141, which is provided with, to be used for
The pouring weight fixing groove 143 of the fixed pouring weight 4, such setting facilitate the placement of pouring weight 4 after experiment, and pick-and-place side
Just, it while in reagent bottle 7 can store the liquid of different densities size, such as salt water, it can will be pure in square water cup 5 in test
Water is substituted for salt water, thus pouring weight 4 can be made to be tested in the liquid of different densities, increases the anecdote of experiment.
Further, described vertical as shown in Fig. 2, the column 121 and the upright post connecting plate 122 are integrally formed
Column connecting plate 122 is bolted with the pedestal 111.
In the embodiment of the present invention, column 121 and upright post connecting plate 122 are integrally formed, and easy to process and manufacturing cost is low,
Upright post connecting plate 122 is bolted with pedestal 111 simultaneously, 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 column is provided with threaded hole, and the cross bar connects box
133 are set in the upper end of the column 121 and are tightened by connection bolt 132 across the bolt hole and threaded hole realization
With the fixation column 121 and the cross bar 131.
Further, the right side of 121 upper end of column connect the inner wall of box 133 with the cross bar by welding admittedly
It is fixed.
In an embodiment of the present invention, due to needing to undertake the weight of pouring weight measuring mechanism 3, and pouring weight on the right side of cross bar 131
The lower section of measuring mechanism 3 is provided with pouring weight 4, and the load on 131 right side of cross bar is larger, therefore is guaranteeing the intensity of cross bar 131 itself
Simultaneously with greater need for the intensity for guaranteeing cross bar 131 and 121 junction of column, the present invention in the left part of cross bar 131 by being provided with
Cross bar connects box 133, and cross bar connection box 133 is set in the upper end of column 121, while the two left end is bolted, Gu
It is simple and securely to determine mode, cross bar connects interference of the right side junction due to cross bar 131 of box 133 and column 121, in inconvenience
By being welded and fixed in the case where using being bolted, which not only adds the connection areas of the two, while passing through connection spiral shell
The reliability that cross bar 131 is connect with column 121 has been effectively ensured in the dual fixation of bolt and welding.
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 4 and it is described lifting rack bar 235 2351 length of rack gear ratio in half to five
Between/tetra-.
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 4 height and lift rack bar 235 2351 length of rack gear ratio between half to 4/5ths, in this way
Both can guarantee pouring weight 4 can have enough sinking distances in pure water, simultaneously because pouring weight 4 and hook 341 assembly after and
The bottom surface of pouring weight 4 is less than the tooth of lifting rack bar 235 at a distance from the pure water horizontal plane when lifting mechanism 2 is located at minimum point
/ 5th of 2351 length of item are also ensured in this way if pouring weight can when the density of selected pouring weight 4 is greater than the density of pure water
Complete submerged, 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,.
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 (1)
1. a kind of buoyancy demonstration teaching aid, it is characterised in that: including load carrier (1), the load carrier (1) includes being set to table
Pedestal (111) on face, the left part of the pedestal are provided with upright post connecting plate (122), are set on the upright post connecting plate (122)
It is equipped with the column vertical with the pedestal (111) (121), the upper end of the column (121) is provided perpendicular to the column
(121) and to the right horizontal-extending cross bar (131), plane is provided with to the cross bar on the right end of the cross bar (131)
(131) sliding slot (134) that left side extends, the bottom at the right side edge of the sliding slot (134) are provided with Anti-off bolt (135),
It is located on the right side of the column (121) on the pedestal (111) and is provided with lifting mechanism (2), the lifting mechanism (2) includes
The fixed lifting pedestal (211) with the pedestal is provided with through-hole (216) on the leading flank of lifting pedestal (211), described
The left end and right end for lifting the upper plane of pedestal (211) are respectively arranged with left lifting location hole (213) and right lifting location hole
(212), in the upper plane of lifting pedestal (211) and positioned at the left lifting location hole (213) and the right lifting positioning
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 right side for lifting gear holding tank (214) and the two connection setting, the through-hole (216) and the lifting gear holding tank
(214) connection setting, the lifting gear holding tank (214) is interior be provided with lifting gear holding tank (214) size and
The adaptable lifting gear (221) of shape, the lifting gear (221) is circumferentially arranged engaging tooth and the assembly of its center location
Have lifting gear shaft (222), it is described lifting gear shaft (222) one end pass through it is described lifting gear (221) the center of circle with it is described
The axis hole lifted on the correspondence inner wall of gear holding tank (214) is rotatably assorted, and the other end of lifting gear shaft (222) passes through
One end of the through-hole (216) and rocker arm connecting rod (223) is assembled, the other end assembly of the rocker arm connecting rod (223)
Have lifting rocker arm (224), top of lifting gear (221) when assembling with lifting gear holding tank (214) is lower than
The top of lifting gear holding tank (214), be provided on the lifting pedestal (211) on the lifting pedestal (211)
The lift master (231) of plane contact, the left end of the lower plane of the lift master (231) and right end be provided with respectively with the left act
Rise the left locating rod (234) and right locating rod (236) of location hole (213) and right lifting location hole (212) assembly, the act
The lower plane of stage (231) and be provided between the left locating rod (234) and the right locating rod (236) with it is described in
Portion lifts the lifting rack bar (235) of hole (215) assembly, is provided with rack gear (2351) on the left of the lifting rack bar (235),
The rack gear (2351) engages tooth engagement on lifting gear (221), sets on the right side of the upper plane of the lift master (231)
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
The left side upper end of cup (5) is provided with water outlet, and the water outlet is connected with outlet pipe, and the upper of the lift master (231) is put down
Face, which is located on the left of the cup fixing groove (233), to be provided with measuring cup fixing groove (232), is set on the measuring cup fixing groove (232)
It is equipped with opening up measuring cup (6), the outlet pipe protrudes into the opening of the measuring cup (6), and the square water cup (5) is provided with pure
Water purification, height of the pure water in the square water cup (5) and the lowermost of the water outlet of the square water cup (5) are high
It spends equal, the pouring weight measuring mechanism (3) being slidably matched with the sliding slot (134), the pouring weight is equipped on the sliding slot (134)
Measuring mechanism (3) includes measuring mechanism ontology (311), is provided on the measuring mechanism ontology (311) and penetrates through in left-right direction
Sliding be open (312), it is described sliding opening (312) top be provided with it is convex with the sliding of the sliding slot (134) slidable fit
It rises (313), is provided with sliding handle (321) in the upper plane of the sliding equipment ontology (311), the sliding equipment ontology
(311) electronic scale one (331) is fixed on lower plane, the lower plane of the electronic scale (331) is provided with for hanging pouring weight
(4) hook (341), after the pouring weight (4) and the hook assemble and the lifting mechanism (2) be located at it is described heavy when minimum point
The bottom surface of block is higher than the horizontal plane of the pure water, and the bottom surface of the pouring weight (4) is small at a distance from the pure water horizontal plane
It is set on 1/5th of rack gear (2351) length of lifting rack bar (235), the leading flank of the electronic scale one (331)
Be equipped with the display screen (332) for showing the pouring weight weight, on the pedestal (111) planar front portion and be located at the lifting machine
Structure is provided with electronic scale two (151) on the right side of (2)；
The left part of the cross bar (131) is provided with cross bar connection box (133), and the left side of cross bar connection box (133) is set
It is equipped with bolt hole, upper surface is provided with threaded hole on the left of the column (121), and cross bar connection box (133) is set in described
It is simultaneously tightened by connection bolt (132) across the bolt hole and threaded hole realization to fix the upper end of column (121)
State column (121) and the cross bar (131)；
The right side of column (121) upper end connect the inner wall of box (133) with the cross bar by being welded and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811111240.3A CN109285428A (en) | 2016-08-17 | 2016-08-17 | Buoyancy demonstration teaching aid |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811111240.3A CN109285428A (en) | 2016-08-17 | 2016-08-17 | Buoyancy demonstration teaching aid |
| CN201610678401.1A CN106023742B (en) | 2016-08-17 | 2016-08-17 | Buoyancy demonstration teaching aid |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610678401.1A Division CN106023742B (en) | 2016-08-17 | 2016-08-17 | Buoyancy demonstration teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109285428A true CN109285428A (en) | 2019-01-29 |
Family
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Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610678401.1A Active CN106023742B (en) | 2016-08-17 | 2016-08-17 | Buoyancy demonstration teaching aid |
| CN201811111244.1A Active CN109166420B (en) | 2016-08-17 | 2016-08-17 | Buoyancy demonstration teaching aid |
| CN201811111251.1A Withdrawn CN109192014A (en) | 2016-08-17 | 2016-08-17 | A kind of buoyancy demonstration teaching aid with electronic scale |
| CN201811111240.3A Withdrawn CN109285428A (en) | 2016-08-17 | 2016-08-17 | Buoyancy demonstration teaching aid |
Family Applications Before (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610678401.1A Active CN106023742B (en) | 2016-08-17 | 2016-08-17 | Buoyancy demonstration teaching aid |
| CN201811111244.1A Active CN109166420B (en) | 2016-08-17 | 2016-08-17 | Buoyancy demonstration teaching aid |
| CN201811111251.1A Withdrawn CN109192014A (en) | 2016-08-17 | 2016-08-17 | A kind of buoyancy demonstration teaching aid with electronic scale |
Country Status (1)
| Country | Link |
|---|---|
| CN (4) | CN106023742B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110253770A (en) * | 2019-06-29 | 2019-09-20 | 嵊州摩天自动化设备有限公司 | Fluting apparatus is used in a kind of construction of construction wall |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106023742B (en) * | 2016-08-17 | 2018-10-16 | 朱晶晶 | Buoyancy demonstration teaching aid |
| CN109036029B (en) * | 2018-08-29 | 2021-11-26 | 广东海翔教育科技有限公司 | Buoyancy demonstration device for physical class |
| CN113299163A (en) * | 2021-05-11 | 2021-08-24 | 湖州师范学院 | Buoyancy detection experimental equipment for physics teaching |
| CN113803924B (en) * | 2021-09-17 | 2023-08-18 | 山东中科赛奥生物科技有限公司 | Cell refrigerator capable of preventing cell pollution |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106023742B (en) | 2018-10-16 |
| CN109166420B (en) | 2021-03-23 |
| CN109192014A (en) | 2019-01-11 |
| CN106023742A (en) | 2016-10-12 |
| CN109166420A (en) | 2019-01-08 |
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Application publication date: 20190129 |
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