CN216352958U

CN216352958U - Junior middle school physics teaching buoyancy presentation device

Info

Publication number: CN216352958U
Application number: CN202122383789.1U
Authority: CN
Inventors: 胡万庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-04-19
Anticipated expiration: 2031-09-29

Abstract

The application discloses junior middle school physics teaching buoyancy presentation device, including PMKD and setting moving mechanism, demonstration case, supporting shoe, first fixed frame, connecting plate and the dwang in PMKD one side, PMKD top fixed connection demonstration case. In order to improve the efficiency of buoyancy demonstration, when using the presentation device, the dwang rotates, under the effect of the internal thread groove of dwang, the dwang drives the first threaded rod of rather than threaded connection and moves down, first threaded rod drives the connecting plate rather than the rigid coupling simultaneously and moves down, the connecting plate drives the gag lever post of top symmetry rigid coupling and moves down on the second fixed plate, prevent that the connecting plate from taking place the skew, the connecting plate drives the piston piece and moves down, push the water in the demonstration case simultaneously, under the effect of through-hole, water gets into between first fixed plate and the third fixed plate, stop when water and aqueduct keep level, be convenient for measuring go on, reduce measuring error.

Description

Junior middle school physics teaching buoyancy presentation device

Technical Field

The application relates to the field of teaching, especially a junior middle school physics teaching buoyancy presentation device.

Background

Buoyancy is the most common power in our life, also is a knowledge point that must master in the physics teaching of junior high school simultaneously, and the teaching personnel is writing on the blackboard usually during traditional buoyancy teaching to this imparts knowledge to students, but can not show out the key knowledge point of buoyancy teaching more directly perceived like this and supply the student to study, so mr often cooperates the buoyancy presentation device teaching.

The existing demonstration device has simpler structure and function, most of the demonstration devices are inconvenient to adjust during teaching, and the demonstration effect is poorer; in addition, the operation of part of the demonstration devices is complex, and the teaching efficiency is low. Therefore, a buoyancy demonstration device for junior middle school physics teaching is provided for solving the problems.

Disclosure of Invention

The utility model provides a junior middle school physics teaching buoyancy presentation device is used for solving the problem that the presentation device among the prior art is not convenient for adjust in this embodiment.

According to one aspect of the application, a buoyancy demonstration device for junior middle school physics teaching is provided, which comprises a fixed bottom plate, a moving mechanism, a demonstration box, a supporting block, a first fixed frame, a connecting plate and a rotating rod, wherein the moving mechanism, the demonstration box, the supporting block, the first fixed frame, the connecting plate and the rotating rod are arranged on one side of the fixed bottom plate, the top of the fixed bottom plate is fixedly connected with the demonstration box, one side of the demonstration box is provided with a visual window, the bottom of the fixed bottom plate is fixedly connected with the connecting rod, the inside of the demonstration box is respectively and fixedly connected with a first fixed plate and a third fixed plate, a second fixed plate is fixedly connected between the first fixed plate and the demonstration box, a through hole is arranged below the first fixed plate, the top of the first fixed plate and the top of the third fixed plate are fixedly connected with a first fixed frame, the inside of the first fixed frame is rotatably connected with a second threaded rod, the moving mechanism comprises a moving plate, one side of the bottom of the moving plate is fixedly connected with a second fixed frame, the inside fixed connection fixed block of the fixed frame of second, the inside rotation of fixed block is connected the axis of rotation.

Further, the connecting rod penetrates through the supporting block and is fixedly connected with the sliding block, the sliding block is connected with the supporting block in a sliding mode, a first sliding groove matched with the sliding block is formed in the supporting block, and the bottom of the supporting block is fixedly connected with the anti-slip mat.

Further, second fixed plate axis department dwang, dwang bottom threaded connection first threaded rod, just the inside thread groove of seting up with first threaded rod adaptation of dwang, first threaded rod bottom fixed connection connecting plate, connecting plate bottom fixed connection piston block, the piston block is laminated with demonstration incasement wall mutually.

Furthermore, the second fixing plate is symmetrically penetrated through and slidably connected with the limiting rod, a through hole matched with the limiting rod is formed in the top of the second fixing plate, and the bottom of the limiting rod is fixedly connected with the connecting plate.

Furthermore, the left side of the third fixing plate is fixedly connected with a water guide pipe, the left side of the bottom of the demonstration box is fixedly connected with a fixing seat, and a measuring cup is placed at the top of the fixing seat.

Further, the inside threaded connection second threaded rod of movable plate, the first fixed frame of second threaded rod left and right sides sliding connection, just the spacing groove of movable plate adaptation is seted up to the first fixed frame left and right sides.

Furthermore, the left side of the rotating shaft is fixedly connected with a first bevel gear, one side of the first bevel gear is meshed with a second bevel gear, the top of the second bevel gear is fixedly connected with the output end of a motor, and the motor is fixedly connected with the top of the movable plate.

Furthermore, the right side of the rotating shaft is fixedly connected with a pulley, and the pulley is fixedly connected with the demonstration block through a connecting line.

Furthermore, the left side and the right side of the demonstration box are fixedly connected with handles, and anti-skid stripes are arranged on the surfaces of the handles.

Furthermore, the number of the connecting rods is four, the connecting rods are uniformly distributed at four ends of the bottom of the fixed bottom plate, springs are sleeved on the surfaces of the connecting rods, the tops of the springs are fixedly connected with the fixed bottom plate, and the bottoms of the springs are fixedly connected with the tops of the supporting blocks.

Through the above-mentioned embodiment of this application, adopted moving mechanism, solved the problem that presentation device is not convenient for adjust, guaranteed the convenience of device simultaneously.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic overall perspective view of an embodiment of the present application;

FIG. 2 is a schematic diagram of the overall internal structure of an embodiment of the present application;

FIG. 3 is an enlarged schematic view of a structure at A in FIG. 2 according to an embodiment of the present application;

fig. 4 is an enlarged schematic view of a structure at B in fig. 2 according to an embodiment of the present application.

In the figure: 1. fixing the bottom plate; 2. a demonstration box; 3. a visual window; 4. a connecting rod; 5. a spring; 6. a support block; 7. a non-slip mat; 8. a slider; 9. a first chute; 10. a first fixing plate; 11. a through hole; 12. a second fixing plate; 13. rotating the rod; 14. a fixed seat; 15. a limiting rod; 16. a first threaded rod; 17. A connecting plate; 18. a piston block; 19. a first fixed frame; 20. a third fixing plate; 21. a first bevel gear; 22. a measuring cup; 23. a water conduit; 24. an electric motor; 25. a second threaded rod; 26. moving the plate; 27. A second bevel gear; 28. a limiting groove; 29. a second fixed frame; 30. a fixed block; 31. a rotating shaft; 32. A pulley; 33. a demonstration block; 34. a handle.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

The moving mechanism in this embodiment may be applied to a guard rail, for example, a guard rail for construction engineering is provided in this embodiment, and the moving mechanism in this embodiment may be used to adjust the guard rail for construction engineering.

The utility model provides a rail guard for building engineering, includes left stand, right stand, it has rotatory section of thick bamboo one to connect through bearing one on the left stand, rotatory section of thick bamboo one is rolled up and is equipped with chain net structure one, the free end of chain net structure one is provided with plugboard one, be connected with rotatory section of thick bamboo two through bearing two on the right stand, rotatory section of thick bamboo two is rolled up and is equipped with chain net structure two, the free end of chain net structure two is provided with plugboard two that corresponds with plugboard one, plugboard two are fixed through locking device, the bottom of left stand, right stand is provided with height-adjustable base, the warning light is installed on the upper portion of left stand, right stand, be provided with the rolling crank on rotatory section of thick bamboo one, the rolling crank is noninterfered with the warning light. The chain net structure I and the chain net structure II are made of net rings which are buckled with each other, one end of the chain net structure I is welded with the rotating cylinder I, the other end of the chain net structure I is welded with the insertion plate I, one end of the chain net structure II is welded with the rotating cylinder II, the other end of the chain net structure II is welded with the insertion plate II, fixing is firmer, and winding is convenient. The plug board I is provided with a plurality of plug blocks, and the plug board II is provided with plug grooves corresponding to the plug blocks, so that the plug is convenient to plug and install. The locking device comprises a first threaded column arranged on the upper portion of the first plug board and a second threaded column arranged on the second plug board, the first threaded column and the second threaded column are connected through a connecting plate, and the connecting plate is fixed through a fixing nut, so that the first plug board and the second plug board can be better fixed. The warning lamp is a warning lamp with a dry cell, is fixed with the left stand column and the right stand column through screws, is convenient to switch and can play a good warning role due to the fact that the warning lamp is provided with a power supply and a control switch. The base includes with left stand, right stand welded bed plate, threaded connection has four threaded rods on the bed plate, the one end of threaded rod is provided with circular shape twist grip, the other end of threaded rod is provided with the footing board, can make level the operation on uneven ground through adjusting four threaded rods.

Of course, the moving mechanism of the present embodiment may be applied to a presentation apparatus. The following describes a presentation apparatus according to an embodiment of the present application.

Referring to fig. 1-4, a buoyancy demonstration device for physics teaching in junior middle school comprises a fixed bottom plate 1, and a moving mechanism, a demonstration box 2, a supporting block 6, a first fixed frame 19, a connecting plate 17 and a rotating rod 13 which are arranged on one side of the fixed bottom plate 1, wherein the top of the fixed bottom plate 1 is fixedly connected with the demonstration box 2, one side of the demonstration box 2 is provided with a visual window 3, the bottom of the fixed bottom plate 1 is fixedly connected with the connecting rod 4, the inside of the demonstration box 2 is respectively fixedly connected with a first fixed plate 10 and a third fixed plate 20, a second fixed plate 12 is fixedly connected between the first fixed plate 10 and the demonstration box 2, a through hole 11 is arranged below the first fixed plate 10, the top of the first fixed plate 10 and the top of the third fixed plate 20 are fixedly connected with the first fixed frame 19, the inside of the first fixed frame 19 is rotatably connected with a second threaded rod 25, the moving mechanism comprises a moving plate 26, one side of the bottom of the moving plate 26 is fixedly connected with a second fixed frame 29, the second fixed frame 29 is fixedly connected with a fixed block 30 inside, and the fixed block 30 is rotatably connected with a rotating shaft 31 inside.

The connecting rod 4 penetrates through the supporting block 6 and is fixedly connected with the sliding block 8, the sliding block 8 is connected with the supporting block 6 in a sliding mode, a first sliding groove 9 matched with the sliding block 8 is formed in the supporting block 6, and the bottom of the supporting block 6 is fixedly connected with an anti-skid pad 7; a rotating rod 13 is arranged at the middle shaft of the second fixing plate 12, the bottom of the rotating rod 13 is in threaded connection with a first threaded rod 16, a threaded groove matched with the first threaded rod 16 is formed in the rotating rod 13, the bottom of the first threaded rod 16 is fixedly connected with a connecting plate 17, the bottom of the connecting plate 17 is fixedly connected with a piston block 18, and the piston block 18 is attached to the inner wall of the demonstration box 2; the second fixing plate 12 is symmetrically penetrated through and slidably connected with a limiting rod 15, a through hole matched with the limiting rod 15 is formed in the top of the second fixing plate 12, and the bottom of the limiting rod 15 is fixedly connected with a connecting plate 17; the left side of the third fixing plate 20 is fixedly connected with a water guide pipe 23, the left side of the bottom of the demonstration box 2 is fixedly connected with a fixed seat 14, and a measuring cup 22 is placed at the top of the fixed seat 14; the inner part of the moving plate 26 is in threaded connection with a second threaded rod 25, the left side and the right side of the second threaded rod 25 are in sliding connection with a first fixed frame 19, and the left side and the right side of the first fixed frame 19 are provided with limit grooves 28 matched with the moving plate 26; the left side of the rotating shaft 31 is fixedly connected with a first bevel gear 21, one side of the first bevel gear 21 is meshed with a second bevel gear 27, the top of the second bevel gear 27 is fixedly connected with the output end of a motor 24, and the motor 24 is fixedly connected with the top of a movable plate 26; a pulley 32 is fixedly connected to the right side of the rotating shaft 31, and the pulley 32 is fixedly connected with a demonstration block 33 through a connecting line; handles 34 are fixedly connected to the left side and the right side of the demonstration box 2, and anti-skid stripes are arranged on the surfaces of the handles 34; the number of the connecting rods 4 is four, the connecting rods 4 are evenly distributed at four ends of the bottom of the fixed base plate 1, the surface of each connecting rod 4 is sleeved with a spring 5, the top of each spring 5 is fixedly connected with the fixed base plate 1, and the bottom of each spring 5 is fixedly connected with the top of the supporting block 6.

When the demonstration device is used, electrical components appearing in the demonstration device are externally connected with a power supply and a control switch, when the demonstration device is used, firstly, the rotating rod 13 is rotated, under the action of a thread groove in the rotating rod 13, the rotating rod 13 drives the first threaded rod 16 in threaded connection with the rotating rod to move downwards, the first threaded rod 16 simultaneously drives the connecting plate 17 fixedly connected with the first threaded rod to move downwards, the connecting plate 17 drives the limiting rods 15 with symmetrically fixedly connected tops to move downwards on the second fixing plate 12, the connecting plate 17 is prevented from deviating, the connecting plate 17 drives the piston block 18 to move downwards, water in the demonstration box 2 is extruded at the same time, under the action of the through hole 11, the water enters between the first fixing plate 10 and the third fixing plate 20, and stops when the water is level with the water guide pipe 23, so that the measurement is convenient to be carried out, the measurement error is reduced, and the buoyancy demonstration efficiency is enhanced; when the demonstration is carried out, the second threaded rod 25 is rotated, the second threaded rod 25 drives the moving plate 26 in threaded connection with the second threaded rod to move downwards, when the second threaded rod moves to a proper position, the motor 24 is started, the output end of the motor 24 drives the second bevel gear 27 fixedly connected with the motor to rotate, the second bevel gear 27 drives the first bevel gear 21 meshed with one side to rotate, the second bevel gear 21 drives the pulley 32 on the right side to rotate through the rotating shaft 31, the demonstration block 33 is gradually put into water through the pulley 32, and after the demonstration block 33 enters the water, the water is drained from the water guide pipe 23 to enter the measuring cup 22 under the buoyancy effect, so that students can understand intuitively and the demonstration effect is improved; when demonstration case 2 received the collision, demonstration case 2 drove the connecting rod 4 downstream of bottom rigid coupling, connecting rod 4 drove and slides in the first spout 9 that the slider 8 of its rigid coupling was seted up in supporting shoe 6, demonstration case 2 extrusion simultaneously and spring 5 of its rigid coupling, spring 5 atress shrink, the reaction force of spring 5 carries out certain offset to the power that the vibration produced to strengthened demonstration case 2 stability, embodied the rationality of structure simultaneously.

The application has the advantages that:

1. in order to improve the efficiency of buoyancy demonstration, when the demonstration device is used, the rotating rod is rotated, under the action of a thread groove in the rotating rod, the rotating rod drives a first threaded rod in threaded connection with the rotating rod to move downwards, the first threaded rod simultaneously drives a connecting plate fixedly connected with the first threaded rod to move downwards, the connecting plate drives limiting rods symmetrically and fixedly connected with the top of the limiting rods to move downwards on a second fixing plate, the connecting plate is prevented from deviating, the connecting plate drives a piston block to move downwards, water in the demonstration box is extruded at the same time, under the action of a through hole, the water enters a space between the first fixing plate and the third fixing plate, and when the water is level with a water guide pipe, the water guide pipe stops, so that the measurement is convenient to carry out, and the measurement error is reduced;

2. in order to improve the demonstration effect, when the demonstration is carried out, the second threaded rod is rotated, the second threaded rod drives the movable plate in threaded connection with the second threaded rod to move downwards, when the movable plate moves to a proper position, the motor is started, the output end of the motor drives the second bevel gear fixedly connected with the motor to rotate, the second bevel gear drives the first bevel gear meshed with one side to rotate, the second bevel gear drives the pulley on the right side to rotate through the rotating shaft, the demonstration block 33 is gradually put into water through the pulley, and after the demonstration block enters the water, the water is drained from the water guide pipe to enter the measuring cup under the action of buoyancy, so that the students can understand visually, and the demonstration effect is improved;

3. this application is rational in infrastructure, through the demonstration case, the connecting rod, the volume cooperation between slider and the supporting shoe, when the demonstration case receives the collision, the demonstration case drives the connecting rod downstream of bottom rigid coupling, the connecting rod drives slides in the first spout that sets up in the supporting shoe with the slider of its rigid coupling, the demonstration case extrudees the spring rather than the rigid coupling simultaneously, the spring atress shrink, the reaction force of spring carries out certain offset to the power that the vibration produced, thereby demonstration case stability has been strengthened, the rationality of structure has been embodied simultaneously.

It is well within the skill of those in the art to implement, without undue experimentation, the present application is not directed to software and process improvements, as they relate to circuits and electronic components and modules.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The utility model provides a junior middle school physics teaching buoyancy presentation device which characterized in that: comprises a fixed bottom plate (1), a moving mechanism, a demonstration box (2), a supporting block (6), a first fixed frame (19), a connecting plate (17) and a rotating rod (13), wherein the moving mechanism, the demonstration box (2), the supporting block (6), the first fixed frame (19), the connecting plate (17) and the rotating rod (13) are arranged on one side of the fixed bottom plate (1), the demonstration box (2) is fixedly connected with the top of the fixed bottom plate (1), a visual window (3) is arranged on one side of the demonstration box (2), the bottom of the fixed bottom plate (1) is fixedly connected with the connecting rod (4), the inside of the demonstration box (2) is respectively fixedly connected with a first fixed plate (10) and a third fixed plate (20), a second fixed plate (12) is fixedly connected between the first fixed plate (10) and the demonstration box (2), a through hole (11) is formed below the first fixed plate (10), the first fixed plate (10) is fixedly connected with the first fixed frame (19) on the top of the third fixed plate (20), and a second threaded rod (25) is rotatably connected with the inside of the first fixed frame (19), the moving mechanism comprises a moving plate (26), one side of the bottom of the moving plate (26) is fixedly connected with a second fixing frame (29), the second fixing frame (29) is fixedly connected with a fixing block (30), and the fixing block (30) is connected with a rotating shaft (31) in a rotating mode.

2. The buoyancy demonstration device for physics teaching in junior middle school according to claim 1, wherein: the connecting rod (4) penetrates through the supporting block (6) and is fixedly connected with the sliding block (8), the sliding block (8) is in sliding connection with the supporting block (6), a first sliding groove (9) matched with the sliding block (8) is formed in the supporting block (6), and the bottom of the supporting block (6) is fixedly connected with the anti-slip mat (7).

3. The buoyancy demonstration device for physics teaching in junior middle school according to claim 1, wherein: dwang (13) is located to second fixed plate (12) axis, dwang (13) bottom threaded connection first threaded rod (16), just dwang (13) inside offer with the thread groove of first threaded rod (16) adaptation, first threaded rod (16) bottom fixed connection connecting plate (17), connecting plate (17) bottom fixed connection piston piece (18), piston piece (18) laminate mutually with demonstration case (2) inner wall.

4. The buoyancy demonstration device for physics teaching in junior middle school according to claim 1, wherein: the inner portion of the second fixing plate (12) is symmetrically penetrated and is connected with the limiting rod (15) in a sliding mode, a through hole matched with the limiting rod (15) is formed in the top of the second fixing plate (12), and the bottom of the limiting rod (15) is fixedly connected with the connecting plate (17).

5. The buoyancy demonstration device for physics teaching in junior middle school according to claim 1, wherein: third fixed plate (20) left side fixed connection aqueduct (23), demonstration case (2) bottom left side fixed connection fixing base (14), graduated flask (22) have been placed at fixing base (14) top.

6. The buoyancy demonstration device for physics teaching in junior middle school according to claim 1, wherein: the movable plate (26) internal thread connects second threaded rod (25), the first fixed frame (19) of second threaded rod (25) left and right sides sliding connection, just spacing groove (28) of movable plate (26) adaptation are seted up to the first fixed frame (19) left and right sides.

7. The buoyancy demonstration device for physics teaching in junior middle school according to claim 1, wherein: the left side of the rotating shaft (31) is fixedly connected with a first bevel gear (21), one side of the first bevel gear (21) is meshed with a second bevel gear (27), the top of the second bevel gear (27) is fixedly connected with the output end of a motor (24), and the motor (24) is fixedly connected with the top of a moving plate (26).

8. The buoyancy demonstration device for physics teaching in junior middle school according to claim 1, wherein: the right side of the rotating shaft (31) is fixedly connected with a pulley (32), and the pulley (32) is fixedly connected with a demonstration block (33) through a connecting line.

9. The buoyancy demonstration device for physics teaching in junior middle school according to claim 1, wherein: the demonstration box (2) is characterized in that handles (34) are fixedly connected to the left side and the right side of the demonstration box (2), and anti-skid stripes are arranged on the surfaces of the handles (34).

10. The buoyancy demonstration device for physics teaching in junior middle school according to claim 1, wherein: the number of the connecting rods (4) is four, the connecting rods (4) are uniformly distributed at four ends of the bottom of the fixed base plate (1), the surface of each connecting rod (4) is sleeved with a spring (5), the top of each spring (5) is fixedly connected with the fixed base plate (1), and the bottom of each spring (5) is fixedly connected with the top of the supporting block (6).