CN106023742A - Buoyancy demonstration teaching aid - Google Patents
Buoyancy demonstration teaching aid Download PDFInfo
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- CN106023742A CN106023742A CN201610678401.1A CN201610678401A CN106023742A CN 106023742 A CN106023742 A CN 106023742A CN 201610678401 A CN201610678401 A CN 201610678401A CN 106023742 A CN106023742 A CN 106023742A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
- G09B23/12—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of liquids or gases
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Abstract
The invention discloses a buoyancy demonstration teaching aid which comprises a bearing mechanism, a lifting mechanism, a weight measuring mechanism, a weight, a water cup, a measuring cup and the like. The bearing mechanism has a bearing effect, the lifting mechanism can lift up the water cup and the measuring cup, the weight is fixed to the lower portion of the weight measuring mechanism, when the lifting mechanism conducts lifting operation, the water cup and the measuring cup move upwards, when the weight enters the water cup, water flows out, the numerical value displayed by the weight measuring mechanism becomes smaller, and water flows into the measuring cup after flowing out. After the test is finished, the lifting mechanism is operated to move downwards to the place above the bearing mechanism, the weight of water flowing out of the measuring cup is equal to the decreased number of the numerical value displayed by the weight measuring mechanism, and that is, the buoyancy is equal to the gravity of discharged water. Buoyancy can be precisely experimented, and the whole teaching aid is reasonable in structure and easy to operate, it is ensured that teaching is lively and interesting, and the teaching aid 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 technology
Students is when learning book knowledge, aid in teaching aid and experimental provision, have greatly help to the understanding and grasp deepening knowledge, especially for the student of the relevant knowledges such as first contacts study buoyancy, physics in-class experiment device is the most necessary.And in existing physics teaching, just lack such in-class experiment device, teacher or fully relying on book knowledge imparts knowledge to students, oneself making 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 demonstration teaching aid, it is possible to solve the problems referred to above in the presence of prior art.
The present invention for achieving the above object, is achieved through the following technical solutions:
nullA kind of buoyancy demonstration teaching aid，Including load carrier，Described load carrier includes the pedestal being arranged on desktop，The left part of described pedestal is provided with upright post connecting plate，The column vertical with described pedestal it is provided with on described upright post connecting plate，The upper end of described column is provided perpendicular to described column and the most horizontal-extending cross bar，On the low order end of described cross bar, plane arranges the chute extended on the left of oriented described cross bar，Bottom at the right side edge of described chute is provided with Anti-off bolt，The right side being positioned at described column on described pedestal is provided with lifting mechanism，Described lifting mechanism includes the lifting pedestal fixing with described pedestal，It is provided with through hole on the leading flank of described lifting pedestal，The left end of the upper plane of described lifting pedestal and right-hand member are respectively arranged with left lifting hole, location and hole, right lifting location，It is provided with lifting gear holding tank and lifting hole, middle part in the upper plane of described lifting pedestal and between described left lifting hole, location and hole, described right lifting location，Lifting hole, described middle part is positioned at the right side of described lifting gear holding tank and both connect setting，Described through hole connects setting with described lifting gear holding tank，The lifting gear adapted with described lifting gear holding tank size and shape it is provided with in described lifting gear holding tank，Described lifting gear is circumferentially arranged has engaging tooth and its home position to be equipped with lifting gear shaft，One end of described lifting gear shaft is rotatably assorted through the center of circle of described lifting gear with the axis hole on the corresponding inwall of described lifting gear grooved，The other end of described lifting gear shaft is through an end assembling of described through hole with rocking arm connecting rod，The other end of described rocking arm connecting rod is equipped with lifting rocking arm，The described lifting gear top when assembling with described lifting gear grooved is less than the top of described lifting gear grooved，It is provided with on described lifting pedestal 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 the left location bar and right location bar assembled respectively with described left lifting hole, location and hole, described right lifting location，The lower plane of described lift master and being provided with between described left location bar and described right location bar and the lifting rack bar of lifting hole, described middle part assembling，The left side of described lifting rack bar is provided with tooth bar，Described tooth bar engages with the engaging tooth on described lifting gear，It is provided with water tumbler on the right side of the upper plane of described lift master and fixes groove，Described water tumbler is fixed and is fixed with opening up square water cup on groove，The upper end, left side of described square water cup is provided with outlet，Described water outlet connects outlet pipe，The upper plane of described lift master is positioned at described water tumbler and fixes the left side of groove and be provided with measuring cup and fix groove，Described measuring cup is fixed and is provided with opening up measuring cup on groove，Described outlet pipe stretches into the opening of described measuring cup，Described square water cup is built with pure water，Described pure water height in described square water cup is equal with the height of the bottom of the outlet of described square water cup，The pouring weight measuring mechanism coordinated with described slide it is equipped with on described chute，Described pouring weight measuring mechanism includes measuring mechanism body，The most through slip opening it is provided with on described measuring mechanism body，The top of described slip opening is provided with the slide protrusion assembled with described slide，It is provided with sliding handle in the upper plane of described slide mechanism body，It is fixed with electronic scale one on the lower plane of described slide mechanism body，The lower plane of described electronic scale is provided with the hook for hanging pouring weight，After described pouring weight and described hook assembling and described lifting mechanism is positioned at the horizontal plane higher than described pure water of the bottom surface of described pouring weight during minimum point，And the distance of the bottom surface of described pouring weight and described pure water horizontal plane less than described lifting rack bar tooth bar length 1/5th，The display screen for showing described pouring weight weight it is provided with on the leading flank of described electronic scale one，Planar front portion and be positioned at the right side of described lifting mechanism and be provided with electronic scale two on described pedestal.
As restriction, plane and be positioned at the dead astern of described electronic scale two and be provided with parcel tray on described pedestal, the reagent bottle that the upper left side of described parcel tray is provided with for fixating reagent bottle fixes groove, and the upper right side of described parcel tray is provided with fixes groove for the pouring weight fixing described pouring weight.
Limiting as another kind, described column is one-body molded with described upright post connecting plate, and described upright post connecting plate is bolted with described pedestal.
As restriction, the left part of described cross bar is provided with cross bar and connects box, described cross bar connects the left side of box and is provided with 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 and realizes 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 right side of described column upper end is connected the inwall of box by being welded and fixed with described cross bar.
As further limiting, the ratio of the length of described chute and the total length of described cross bar is between 3/2 to four/3rds, and the ratio of the height of described pouring weight and the tooth bar length of described lifting rack bar is between 4/1 to five/2nds.
As restriction, the bottom fore-and-aft direction of described pedestal is provided with the opening one of through described pedestal, and the bottom left and right directions of described pedestal is provided with the opening two of through described pedestal.
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, water tumbler and measuring cup is made to move up, when pouring weight enters water tumbler, water overflows, pouring weight measuring mechanism display numerical value diminishes, water flows into measuring cup after overflowing, now measure whether the quantity that the weight overflowing water in measuring cup diminishes with pouring weight measuring mechanism display numerical value, i.e. buoyancy are equal to the gravity of draining.Therefore the present 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, is used for together with embodiments of the present invention 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.
nullIn the accompanying drawings: 1-load carrier，111-pedestal，112-opening one，113-opening two，121-column，122-upright post connecting plate，131-cross bar，132-connecting bolt，133-cross bar connects box，134-chute，135-Anti-off bolt，141-parcel tray，142-reagent bottle fixes groove，143-pouring weight fixes groove，151-electronic scale two，152-second display screen，2-lifting mechanism，211-lifts pedestal，Hole, 212-right lifting location，Hole, 213-left lifting location，214-lifts gear holding tank，Hole is lifted in the middle part of 215-，216-through hole，221-lifts gear，222-lifts gear shaft，223-rocking arm connecting rod，224-lifts rocking arm，231-lift master，Groove fixed by 232-measuring cup，233-water tumbler fixes groove，234-left location bar，235-lifts rack bar，2351-tooth bar，236-right location bar，3-pouring weight measuring mechanism，311-measuring mechanism body，312-slip opening，313-slide protrusion，331-electronic scale one，332-display screen，341-links up with，4-pouring weight，5-square water cup，6-measuring cup，7-reagent bottle.
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, by the way of explanation, only describe 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, can be modified described embodiment by various different modes.Therefore, accompanying drawing and description are inherently the most illustrative rather than are used for limiting scope of the claims.
nullAs Figure 1-Figure 4，Buoyancy demonstration teaching aid according to embodiments of the present invention，Including load carrier 1，Described load carrier 1 includes the pedestal 111 being arranged on desktop，The left part of described pedestal is provided with upright post connecting plate 122，The column 121 vertical with described pedestal 111 it is provided with on described upright post connecting plate 122，The upper end of described column 121 is provided perpendicular to described column 121 and the most horizontal-extending cross bar 131，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，Bottom at the right side edge of described chute 134 is provided with Anti-off bolt 135，The right side being positioned at described column 121 on described pedestal 111 is provided with lifting mechanism 2，Described lifting mechanism 2 includes and the fixing lifting pedestal 211 of described pedestal 111，It is provided with through hole 216 on the leading flank of described lifting pedestal 211，The left end of the upper plane of described lifting pedestal 211 and right-hand member are respectively arranged with left lifting hole 213, location and hole 212, right lifting location，It is provided with lifting gear holding tank 214 and lifting hole, middle part 215 in the upper plane of described lifting pedestal 211 and between described left lifting hole 213, location and hole 212, described right lifting location，Lifting hole, described middle part 215 is positioned at the right side of described lifting gear holding tank 214 and both connect setting，Described through hole 216 connects setting with described lifting gear holding tank 214，The lifting gear 221 adapted with described lifting gear holding tank 214 size and shape it is provided with in described lifting gear holding tank 214，Described lifting gear 221 is circumferentially arranged has engaging tooth and its home position to be equipped with lifting gear shaft 222，One end of described lifting gear shaft 222 is rotatably assorted through the center of circle of described lifting gear 221 with the axis hole on the corresponding inwall of described lifting gear grooved 214，The other end of described lifting gear shaft 222 is through an end assembling of described through hole 216 with rocking arm connecting rod 223，The other end of described rocking arm connecting rod 223 is equipped with lifting rocking arm 224，The described lifting gear 221 top when assembling with described lifting gear grooved 214 is less than the top of described lifting gear grooved 214，It is provided with on described lifting pedestal 211 and the lift master 231 of plane contact on described lifting pedestal 211，The left end of the lower plane of described lift master 231 and right-hand member are provided with the left location bar 234 assembled respectively with described left lifting hole 213, location and hole 212, described right lifting location) and right location bar 236，The lower plane of described lift master 231 and being provided with between described left location bar 234 and described right location bar 236 and the lifting rack bar 235 of lifting hole 215, described middle part assembling，The left side of described lifting rack bar 235 is provided with tooth bar 2351，Described tooth bar 2351 engages with the engaging tooth on described lifting gear 221，It is provided with water tumbler on the right side of the upper plane of described lift master 231 and fixes groove 233，Described water tumbler is fixed and is fixed with opening up square water cup 5 on groove 233，The upper end, left side of described square water cup 5 is provided with outlet，Described water outlet connects outlet pipe，The upper plane of described lift master 231 is positioned at described water tumbler and fixes the left side of groove 233 and be provided with measuring cup and fix groove 232，Described measuring cup is fixed and is provided with opening up measuring cup 6 on groove 232，Described outlet pipe stretches into the opening of described measuring cup 6，Described square water cup 5 is built with pure water，Described pure water height in described square water cup 5 is equal with the height of the bottom of the outlet of described square water cup 5，The pouring weight measuring mechanism 3 being slidably matched with described chute 134 it is equipped with on described chute 134，Described pouring weight measuring mechanism 3 includes measuring mechanism body 311，The most through slip opening 312 it is provided with on described measuring mechanism body 311，The top of described slip opening 312 is provided with and the slide protrusion 313 of described chute 134 slidable fit，It is provided with sliding handle 321 in the upper plane of described slide mechanism body 311，It is fixed with electronic scale 1 on the lower plane of described slide mechanism body 311，The lower plane of described electronic scale 331 is provided with the hook 341 for hanging pouring weight 4，After described pouring weight 4 and described hook assembling and described lifting mechanism 2 is positioned at during minimum point the bottom surface of described pouring weight higher than the horizontal plane of described pure water，And the distance of the bottom surface of described pouring weight 4 and described pure water horizontal plane less than described lifting rack bar 235 tooth bar 2351 length 1/5th，The display screen 332 for showing described pouring weight weight it is provided with on the leading flank of described electronic scale 1，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.
nullIn embodiments of the invention，On the low order end of cross bar 131, plane arranges the chute 134 extended on the left of oriented cross bar 131，The length of chute 134 can carry out respective design according to the pouring weight 4 position above square water cup 5，Need to ensure that pouring weight 4 can move freely in the opening of square water cup 5，When assembling，Screw off the Anti-off bolt 135 of chute 134 right-hand member，The chute making cross bar 131 partially passes through the slip opening 312 of measuring mechanism body 311，The slide protrusion 313 on slip opening 312 is made to be slidably matched with chute 134，Tighten Anti-off bolt 135 afterwards，Prevent pouring weight measuring mechanism 3 from coming off，Now pouring weight measuring mechanism 3 can on chute 134 slidably，By coordinating of the slide protrusion 313 on slip opening 312 and chute 134，The reliability that therebetween connect has been effectively ensured，It is provided with electronic scale 331 on pouring weight measuring mechanism 3 simultaneously，Display screen 332 on electronic scale 331 shows a measurement numerical value with pure water when pouring weight 4 does not contacts，Lifting mechanism 2 includes lifting pedestal 211、Lifting gear 221 and lift master 231 etc.，By shake lifting rocking arm 224，Lifting gear 221 can be driven to rotate，And then drive the lifting rack bar 235 being engaged with to move up and down，When lifting rack bar and moving upward，The square water cup 5 on lift master 231 and measuring cup 6 can be made to move upward，And then make pouring weight 4 enter water tumbler，So that the pure water in water tumbler overflows，And flow in measuring cup，When pouring weight sinks to correct position，Display screen 332 on electronic scale 331 shows pouring weight 4 another measurement numerical value under buoyancy，Now experiment terminates，Operation lifting mechanism 2 is displaced downwardly to least significant end，Now by measuring cup 6 as on electronic scale 2 151，Now i.e. can be shown that measurement numerical value on second display screen 152，This measurement numerical value is the weight that the measured value of electronic scale 2 151 deducts measuring cup 6，If this measures the numerical value display numerical value of display screen 332 at the end of the display numerical value that pouring weight does not contacts deducts experiment of the display screen 332 equal to electronic scale 1 with pure water，Then prove that F floats=G row，(G row is equal to the weight of the water flowed in measuring cup 6，F floats the display screen 332 display numerical value of display screen 332 at the end of the display numerical value that pouring weight does not contacts deducts experiment equal to electronic scale 1 with pure water，I.e. pouring weight buoyancy in water，).
It should be noted that, pure water height in square water cup 5 is equal with the height of the bottom of the outlet of square water cup 5, that is the pure water in square water cup 5 is just at the state of not flowing out, as long as pouring weight 4 contacts with horizontal plane one, pure water can enter measuring cup by outlet pipe, the most i.e. can effectively ensure that the degree of accuracy of experiment；After additionally pouring weight 4 assembles with hook 341 and when lifting mechanism 2 is positioned at minimum point, the bottom surface of pouring weight 4 is higher than the horizontal plane of pure water, additionally after pouring weight 4 with hook 341 assembling and when lifting mechanism 2 is positioned at minimum point, the distance of the bottom surface of pouring weight 4 and described pure water horizontal plane is less than 1/5th of tooth bar 2351 length of lifting rack bar 235, so, when operation lifting rocking arm 224, the lifting rack bar 235 less distance that moves upward can make pouring weight 4 contact with horizontal plane, facilitates the operation of experiment and carries out.
Further, as shown in Figure 1 and Figure 2, plane and be positioned at the dead astern of described electronic scale 2 151 and be provided with parcel tray 141 on described pedestal 111, the reagent bottle that the upper left side of described parcel tray 141 is provided with for fixating reagent bottle 7 fixes groove 142, and the upper right side of described parcel tray 141 is provided with fixes groove 143 for the pouring weight fixing described pouring weight 4.
In embodiments of the invention, the dead astern of electronic scale 2 333 is provided with parcel tray 141, and both of which is arranged at the right side of lifting mechanism 2, the layout of each parts composition compact and reasonable on pedestal 111 has so been effectively ensured, and the reagent bottle that the upper left side of parcel tray 141 is provided with for fixating reagent bottle 7 fixes groove 142, the upper right side of parcel tray 141 is provided with fixes groove 143 for the pouring weight fixing described pouring weight 4, such setting facilitates experiment and terminates the placement of rear pouring weight 4, and pick and place conveniently, reagent bottle 7 can be deposited the liquid of different densities size simultaneously, such as saline etc., pure water in square water cup 5 can be replaced to saline by test, pouring weight 4 thus can be made to test in the liquid of different densities, increase the anecdote of experiment.
Further, as in figure 2 it is shown, described column 121 is one-body molded with described upright post connecting plate 122, described upright post connecting plate 122 is bolted with described pedestal 111.
In embodiments of the invention, column 121 is one-body molded with upright post connecting plate 122, and 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 shown in Figure 2, the left part of described cross bar 131 is provided with cross bar and connects box 133, described cross bar connects the left side of box 133 and is provided with bolt hole, on the left of described column 121, 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 realizes tightening with fixing described column 121 and described cross bar 131 through described bolt hole and described screwed hole by connecting bolt 132.
Further, the right side of described column 121 upper end is connected the inwall of box 133 by being welded and fixed with described cross bar.
nullIn an embodiment of the present invention，Owing to needing to undertake the weight of pouring weight measuring mechanism 3 on the right side of cross bar 131，And the lower section of pouring weight measuring mechanism 3 is provided with pouring weight 4，Load on the right side of cross bar 131 is bigger，Therefore with greater need for the intensity ensureing cross bar 131 and column 121 junction while ensureing the intensity of cross bar 131 own，The present invention connects box 133 by being provided with cross bar in the left part of cross bar 131，Cross bar connects box 133 and is set in the upper end of column 121，Both left ends are bolted simultaneously，Its fixed form is simple and firm，Cross bar connects the box 133 junction, right side with column 121 due to the interference of cross bar 131，Be inconvenient to use bolted in the case of by being welded and fixed，Which not only adds both connection areas，Fixed by connecting bolt and the dual of welding simultaneously，Reliability that cross bar 131 with column 121 be connected has been effectively ensured.
Further, the ratio of the length of described chute 134 and the total length of described cross bar 131 is between 3/2 to four/3rds, and the ratio of the height of described pouring weight 4 and tooth bar 2351 length of described lifting rack bar 235 is between 4/1 to five/2nds.
In embodiments of the invention, the ratio of the length of chute 134 and the total length of cross bar 131, between 3/2 to four/3rds, so can ensure the pouring weight measuring mechanism 3 sliding distance in chute, to further facilitate the operation of experiment；The height of pouring weight 4 and the ratio of tooth bar 2351 length of lifting rack bar 235 are between 4/1 to five/2nds simultaneously, the most both can ensure that pouring weight 4 can have enough sinking distances in pure water, simultaneously because after pouring weight 4 and hook 341 assembling and when lifting mechanism 2 is positioned at minimum point the distance of the bottom surface of pouring weight 4 and described pure water horizontal plane less than lifting rack bar 235 tooth bar 2351 length 1/5th, so also ensure that if the density of selected pouring weight 4 more than pouring weight during the density of pure water can submerged completely, to ensure experiment purpose.
Further, as it can be seen, the bottom fore-and-aft direction of described pedestal 111 is provided with the opening 1 of through described pedestal 111, 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.
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, the scope of protection of the invention all should be belonged to.
Claims (7)
- null1. a buoyancy demonstration teaching aid，It is characterized in that: include load carrier (1)，Described load carrier (1) includes the pedestal (111) being arranged on desktop，The left part of described pedestal is provided with upright post connecting plate (122)，The column (121) vertical with described pedestal (111) it is provided with on described upright post connecting plate (122)，The upper end of described column (121) is provided perpendicular to described column (121) and the most horizontal-extending cross bar (131)，On the low order end of described cross bar (131), plane arranges the chute (134) that oriented described cross bar (131) left side extends，Bottom at the right side edge of described chute (134) is provided with Anti-off bolt (135)，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，It is provided with through hole (216) on the leading flank of described lifting pedestal (211)，The left end of the upper plane of described lifting pedestal (211) and right-hand member are respectively arranged with left lifting hole, location (213) and right lifting hole, location (212)，In the upper plane of described lifting pedestal (211) and be positioned between described left lifting hole, location (213) and described right lifting location hole (212) to be provided with and lift gear holding tank (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 setting，Described through hole (216) connects setting with described lifting gear holding tank (214)，The lifting gear (221) adapted with described lifting gear holding tank (214) size and shape it is provided with in described lifting gear holding tank (214)，Described lifting gear (221) is circumferentially arranged has engaging tooth and its home position to be equipped with lifting gear shaft (222)，One end of described lifting gear shaft (222) is rotatably assorted through the center of circle of described lifting gear (221) with the axis hole on the corresponding inwall of described lifting gear grooved (214)，The other end of described lifting gear shaft (222) is through an end assembling of described through hole (216) with rocking arm connecting rod (223)，The other end of described rocking arm connecting rod (223) is equipped with lifting rocking arm (224)，The described lifting gear (221) top when assembling with described lifting gear grooved (214) is less than the top of described lifting gear grooved (214)，The lift master (231) of plane contact upper with described lifting pedestal (211) it is provided with on described lifting pedestal (211)，The left end of the lower plane of described lift master (231) and right-hand member are provided with left location bar (234) and right location bar (236) assembled respectively with described left lifting hole, location (213) and described right lifting hole, location (212)，The lower plane of described lift master (231) and be positioned at and be provided with the lifting rack bar (235) assembled with lifting hole, described middle part (215) between described left location bar (234) and described right location bar (236)，The left side of described lifting rack bar (235) is provided with tooth bar (2351)，Described tooth bar (2351) engages with the engaging tooth on described lifting gear (221)，It is provided with water tumbler on the right side of the upper plane of described lift master (231) and fixes groove (233)，Described water tumbler is fixed and is fixed with opening up square water cup (5) on groove (233)，The upper end, left side of described square water cup (5) is provided with outlet，Described water outlet connects outlet pipe，The upper plane of described lift master (231) is positioned at described water tumbler and fixes the left side of groove (233) and be provided with measuring cup and fix groove (232)，Described measuring cup is fixed and is provided with opening up measuring cup (6) on groove (232)，Described outlet pipe stretches into the opening of described measuring cup (6)，Described square water cup (5) is built with pure water，Described pure water height in described square water cup (5) is equal with the height of the bottom of the outlet of described square water cup (5)，The pouring weight measuring mechanism (3) being slidably matched with described chute (134) it is equipped with on described chute (134)，Described pouring weight measuring mechanism (3) includes measuring mechanism body (311)，The most through slip opening (312) it is provided with on described measuring mechanism body (311)，The top of described slip opening (312) is provided with the slide protrusion (313) with described chute (134) slidable fit，It is provided with sliding handle (321) in the upper plane of described slide mechanism body (311)，It is fixed with electronic scale one (331) on the lower plane of described slide mechanism body (311)，The lower plane of described electronic scale (331) is provided with the hook (341) for hanging pouring weight (4)，After described pouring weight (4) and described hook assembling and described lifting mechanism (2) is positioned at the horizontal plane higher than described pure water of the bottom surface of described pouring weight during minimum point，And the distance of the bottom surface of described pouring weight (4) and described pure water horizontal plane less than described lifting rack bar (235) tooth bar (2351) length 1/5th，The display screen (332) for showing described pouring weight weight it is provided with on the leading flank of described electronic scale one (331)，The upper planar front portion of described pedestal (111) and be positioned at the right side of described lifting mechanism (2) and be provided with electronic scale two (151).
- Buoyancy demonstration teaching aid the most according to claim 1, it is characterized in that: the upper plane of described pedestal (111) and be positioned at the dead astern of described electronic scale two (151) and be provided with parcel tray (141), the reagent bottle that the upper left side of described parcel tray (141) is provided with for fixating reagent bottle (7) fixes groove (142), and the upper right side of described parcel tray (141) is provided with fixes groove (143) for the pouring weight fixing described pouring weight (4).
- Buoyancy demonstration teaching aid the most according to claim 1 and 2, it is characterised in that: described column (121) is one-body molded with described upright post connecting plate (122), and described upright post connecting plate (122) is bolted with described pedestal (111).
- Buoyancy demonstration teaching aid the most according to claim 3, it is characterized in that: the left part of described cross bar (131) is provided with cross bar and connects box (133), described cross bar connects the left side of box (133) and is provided with bolt hole, upper surface, described column (121) left side is provided with screwed hole, and described cross bar connects box (133) and is set in the upper end of described column (121) and realizes tightening with fixing described column (121) and described cross bar (131) through described bolt hole and described screwed hole by connecting bolt (132).
- Buoyancy demonstration teaching aid the most according to claim 4, it is characterised in that: the right side of described column (121) upper end is connected the inwall of box (133) by being welded and fixed with described cross bar.
- Buoyancy demonstration teaching aid the most according to claim 5, it is characterized in that: the ratio of the length of described chute (134) and the total length of described cross bar (131) is between 3/2 to four/3rds, and the ratio of the height of described pouring weight (4) and tooth bar (2351) length of described lifting rack bar (235) is between 4/1 to five/2nds.
- Buoyancy demonstration teaching aid the most according to claim 1, it is characterized in that: the bottom fore-and-aft direction of described pedestal (111) is provided with the opening one (112) of through described pedestal (111), the bottom left and right directions of described pedestal (111) is provided with the opening two (113) of through described pedestal (111).
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610678401.1A CN106023742B (en) | 2016-08-17 | 2016-08-17 | Buoyancy demonstration teaching aid |
| CN201811111240.3A CN109285428A (en) | 2016-08-17 | 2016-08-17 | Buoyancy demonstration teaching aid |
| CN201811111244.1A CN109166420B (en) | 2016-08-17 | 2016-08-17 | Buoyancy demonstration teaching aid |
| CN201811111251.1A CN109192014A (en) | 2016-08-17 | 2016-08-17 | A kind of buoyancy demonstration teaching aid with electronic scale |
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| CN201811111240.3A Division CN109285428A (en) | 2016-08-17 | 2016-08-17 | Buoyancy demonstration teaching aid |
| CN201811111244.1A Division CN109166420B (en) | 2016-08-17 | 2016-08-17 | Buoyancy demonstration teaching aid |
| CN201811111251.1A Division CN109192014A (en) | 2016-08-17 | 2016-08-17 | A kind of buoyancy demonstration teaching aid with electronic scale |
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| CN201610678401.1A Active CN106023742B (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 |
| CN201811111244.1A Active CN109166420B (en) | 2016-08-17 | 2016-08-17 | Buoyancy demonstration teaching aid |
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| CN201811111244.1A Active CN109166420B (en) | 2016-08-17 | 2016-08-17 | Buoyancy demonstration teaching aid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036029A (en) * | 2018-08-29 | 2018-12-18 | 广东海翔教育科技有限公司 | A kind of physics lesson buoyancy demonstrating device |
| CN113803924A (en) * | 2021-09-17 | 2021-12-17 | 赵宝玉 | Cell refrigerator capable of preventing cell pollution |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109285428A (en) * | 2016-08-17 | 2019-01-29 | 史玉成 | Buoyancy demonstration teaching aid |
| CN110253770B (en) * | 2019-06-29 | 2020-10-27 | 嵊州摩天自动化设备有限公司 | Slotting equipment for building wall construction |
| CN113299163A (en) * | 2021-05-11 | 2021-08-24 | 湖州师范学院 | Buoyancy detection experimental equipment for physics teaching |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106023742B (en) | 2018-10-16 |
| CN109192014A (en) | 2019-01-11 |
| CN109285428A (en) | 2019-01-29 |
| CN109166420A (en) | 2019-01-08 |
| CN109166420B (en) | 2021-03-23 |
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