CN209373872U - A kind of teaching balance demonstrating model - Google Patents

Abstract

A kind of teaching balance demonstrating model, including two pedestals, a vertical bar has been respectively fixedly connected on each pedestal, connecting rope is fixedly connected between at the top of two vertical bars, balancing device is provided in connecting rope, balancing device includes balancing stand, balancing stand on both sides of the middle has been respectively fixedly connected with a fixed block, shaft is rotatably connected between two fixed blocks, idler wheel is fixedly connected in shaft, balancing stand top is fixedly connected with connection frame, connection frame two sides pass through connection component respectively and are fixedly connected with the first balance weight and the second balance weight, vertical centerline where first balance weight and the second balance weight center of gravity is identical as the distance between idler wheel respectively, first balance weight is identical as the weight of the second balance weight, the center of gravity of first balance weight and the second balance weight is lower than fulcrum.The utility model structure is simple, the operation is stable, dismounting is convenient, can understand that intuitively help student understands equilibrium state and can be with the learning interest of mobilizing students.

Description

A kind of teaching balance demonstrating model

Technical field

The utility model belongs to teaching mode technical field more particularly to a kind of teaching balance demonstrating model.

Background technique

Teaching is a kind of distinctive personnel training activity of the mankind composed by the religion of teacher and student.Pass through this work Dynamic, teacher guides student actively consciously to learn and accelerate to grasp Cultural Science rudimentary knowledge purposeful, planned and organizedly And basic skills, promote student's various aspects quality to improve comprehensively, them is made to become people required for society.In teaching, in order to It will integrate theory with practice, it is general to require after the theoretical knowledge of study a period of time, make student viewing in kind, teacher needs The movement and structure of specific demonstration machine components still in presentation process, are drawn due to that cannot be student in explanation, Student can not be allowed to tend not to hands-on and the good combination of theoretical knowledge, teacher or books to the description of situation in books Time-space image directly is formed in student's brain, cannot intuitively be presented to very much student, in study, student feels to be difficult to manage Solution.In existing equalising torque experimental provision, most of exerted a force with spring scale or counterweight, and the power of spring scale or counterweight is logical It crosses reading to learn, such balance test apparatus structure is complicated, and is difficult to the interest of mobilizing students.

Utility model content

The utility model provides that a kind of structure is simple, the operation is stable, dismounting to solve shortcoming in the prior art It is convenient, can understand student is intuitively helped to understand equilibrium state and can be with the teaching of the learning interest of mobilizing students with flat Weigh demonstrating model.

In order to solve the above technical problems, the utility model adopts the following technical solution: a kind of teaching balance demonstrating model, Including two spaced pedestals, be fixedly connected with a vertical bar on each pedestal vertically respectively, at the top of two vertical bars between It is fixedly connected with connecting rope, balancing device is provided in connecting rope, balancing device includes balancing stand, balancing stand on both sides of the middle difference It is fixedly connected with a fixed block, shaft is rotatably connected between two fixed blocks, idler wheel, idler wheel rolling are fixedly connected in shaft Dynamic to be connected in connecting rope, balancing stand top is fixedly connected with connection frame, and connection frame two sides connect by the way that connection component is fixed respectively Be connected to the first balance weight and the second balance weight, the vertical centerline where the first balance weight and the second balance weight center of gravity respectively with rolling The distance between wheel is identical, and the first balance weight is identical as the weight of the second balance weight, is at the contact position of idler wheel and connecting rope The center of gravity of fulcrum, the first balance weight and the second balance weight is lower than fulcrum.

The connection component includes several connectors and connecting rod, and each connecting rod end passes through connector respectively and successively goes here and there Connection, two connecting rods for being located at head end pass through connector respectively and are fixedly connected on connection frame, the first balance weight and the second balance Block is respectively fixedly connected in the connecting rod for being located at end.

The balancing stand bottom is fixedly connected with fixed link, and third balance weight is fixedly connected in fixed link.

Interval is fixedly connected with several locating pieces from top to bottom at the top of every vertical bar, along the circumferential direction divides on each locating piece Limiting slot is not offered, and connecting rope end is fixedly connected in limiting slot.

Counterweight tank is offered in the pedestal, is filled with clump weight in counterweight tank.

By adopting the above technical scheme, the utility model has the advantages that

1, inclined direction of the balancing device by idler wheel along connecting rope moves, and connection frame two sides pass through respectively in balancing device Connection component is fixedly connected with the first balance weight and the second balance weight, as where the first balance weight and the second balance weight center of gravity Vertical centerline is identical as the distance between idler wheel respectively, and the first balance weight is identical as the weight of the second balance weight, thus So that the torque of balancing stand two sides is identical, according to lever principle, the moment is in equilibrium state to balancing stand in the process of moving, and And first the center of gravity of balance weight and the second balance weight be lower than fulcrum, so balancing stand stable can be moved and be protected in connecting rope Equilibrium state is held, cheer and bright help student intuitively understands the effect of torque equilibrium state and equilibrium state；This is practical New structure is simple, effectively excites the learning interest of student, and student is intuitively helped to understand equilibrium principle, and balance institute The condition needed.

2, the utility model is fixedly connected with third balance weight by fixed link in balancing stand bottom, so that the shifting of balancing stand It is dynamic more stable.

3, the utility model is fixedly connected with the first balance weight and the second balance weight using connection component, dismounts convenient, structure Stablize, and can intuitively observe the required condition of balance.

4, on pedestal breed block setting, increase the stability of pedestal, avoid balancing device in the process of moving, erect Bar run-off the straight.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram of balancing device in the utility model.

Specific embodiment

As shown in Figs. 1-2, a kind of teaching of the utility model balance demonstrating model, including two spaced pedestals 1, it is fixedly connected with a vertical bar 2 on each pedestal 1 vertically respectively, is fixedly connected with connecting rope 3 between two 2 tops of vertical bars, Balancing device 4 is provided in connecting rope 3, balancing device 4 includes balancing stand 5, and 5 on both sides of the middle of balancing stand has been respectively fixedly connected with one A fixed block 6 is rotatably connected to shaft 7 between two fixed blocks 6, and idler wheel 8 is fixedly connected in shaft 7, and idler wheel 8 rolls connection In connecting rope 3,5 top of balancing stand is fixedly connected with connection frame 9, and 9 two sides of connection frame are fixedly connected by connection component respectively There are the first balance weight 10 and the second balance weight 11, the vertical centerline where 11 center of gravity of the first balance weight 10 and the second balance weight point Not identical as the distance between idler wheel 8, the first balance weight 10 is identical as the weight of the second balance weight 11, idler wheel 8 and connecting rope 3 It is fulcrum at contact position, the center of gravity of the first balance weight 10 and the second balance weight 11 is lower than fulcrum.

The connection component includes several connectors 12 and connecting rod 13, and each 13 end of connecting rod passes through connector respectively 12 are sequentially connected in series, and two connecting rods 13 for being located at head end are fixedly connected on connection frame 9 by connector 12 respectively, the first balance Block 10 and the second balance weight 11 are respectively fixedly connected in the connecting rod 13 for being located at end.

5 bottom of balancing stand is fixedly connected with fixed link 14, and third balance weight 15 is fixedly connected in fixed link 14.

Every 2 top of vertical bar is spaced is fixedly connected with several locating pieces 16 from top to bottom, on each locating piece 16 circumferentially Direction offers limiting slot 17 respectively, and 3 end of connecting rope is fixedly connected in limiting slot 17.

Counterweight tank is offered in the pedestal 1, is filled with clump weight in counterweight tank.Counterweight tank and counterweight is not shown in the figure Block.

The working principle of the utility model are as follows: 3 both ends of connecting rope are respectively fixedly connected with the positioning in two different heights On block 16, balancing device 4 is placed in connecting rope 3, so that idler wheel 8 is contacted with connecting rope 3, since connecting rope 3 is obliquely installed, Inclined direction of the balancing device 4 by idler wheel 8 along connecting rope 3 moves, and 9 two sides of connection frame pass through connection respectively in balancing device 4 Component is fixedly connected with the first balance weight 10 and the second balance weight 11, by 11 center of gravity institute of the first balance weight 10 and the second balance weight Vertical centerline respectively between idler wheel 8 at a distance from identical, and the weight of the first balance weight 10 and the second balance weight 11 Identical, so that the torque of 5 two sides of balancing stand is identical, according to lever principle, the moment is in balancing stand 5 in the process of moving Equilibrium state, and the center of gravity of the first balance weight 10 and the second balance weight 11 be lower than fulcrum, so balancing stand 5 can it is stable Equilibrium state is moved and kept in connecting rope 3, and cheer and bright help student intuitively understands torque equilibrium state, and balance The effect of state.The utility model structure is simple, effectively excites the learning interest of student, intuitively helps student to understand flat Weigh principle, and balances required condition；The utility model is fixedly connected with third by fixed link 14 in 5 bottom of balancing stand Balance weight 15, so that the movement of balancing stand 5 is more stable；The utility model is fixedly connected with the first balance weight 10 using connection component And second balance weight 11, convenient, stable structure is dismounted, and condition needed for capable of intuitively observing balance；It breeds on pedestal 1 The setting of block increases the stability of pedestal 1, avoids balancing device 4 in the process of moving, 2 run-off the straight of vertical bar.

The present embodiment not makes any form of restriction the shape of the utility model, material, structure etc., all foundations The technical essence of the utility model any simple modification, equivalent change and modification to the above embodiments, belong to this reality With the protection scope of new technique scheme.

Claims (5)

1. a kind of teaching balance demonstrating model, it is characterised in that: including two spaced pedestals, distinguish on each pedestal It is fixedly connected with a vertical bar vertically, is fixedly connected with connecting rope between two vertical bars tops, balance dress is provided in connecting rope It sets, balancing device includes balancing stand, and balancing stand on both sides of the middle has been respectively fixedly connected with a fixed block, has turned between two fixed blocks It is dynamic to be connected with shaft, idler wheel is fixedly connected in shaft, idler wheel rolling is connected in connecting rope, and balancing stand top is fixedly connected with Connection frame, connection frame two sides pass through connection component respectively and are fixedly connected with the first balance weight and the second balance weight, the first balance weight It is identical as the distance between idler wheel respectively with the vertical centerline where the second balance weight center of gravity, the first balance weight and the second balance The weight of block is identical, is fulcrum at the contact position of idler wheel and connecting rope, the center of gravity of the first balance weight and the second balance weight is lower than Fulcrum.

2. teaching according to claim 1 balance demonstrating model, it is characterised in that: if the connection component includes involvement Connector and connecting rod, each connecting rod end are sequentially connected in series by connector respectively, and two connecting rods for being located at head end are led to respectively It crosses connector to be fixedly connected on connection frame, the first balance weight and the second balance weight are respectively fixedly connected in the connection for being located at end On bar.

3. teaching according to claim 1 or 2 balance demonstrating model, it is characterised in that: the balancing stand bottom is fixed It is connected with fixed link, third balance weight is fixedly connected in fixed link.

4. teaching according to claim 3 balance demonstrating model, it is characterised in that: at the top of every vertical bar from top to bottom between Every being fixedly connected with several locating pieces, limiting slot is along the circumferential direction offered on each locating piece respectively, connecting rope end is fixed It is connected in limiting slot.

5. teaching according to claim 1 balance demonstrating model, it is characterised in that: offer counterweight in the pedestal Slot is filled with clump weight in counterweight tank.