CN215814708U

CN215814708U - Dynamic demonstration device for junior middle school mathematics parabola

Info

Publication number: CN215814708U
Application number: CN202023171231.9U
Authority: CN
Inventors: 孟根其其格
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2022-02-11
Anticipated expiration: 2030-12-25

Abstract

The application discloses junior middle school mathematics parabola developments presentation device, including first demonstration board, the fixed plate, the rotor plate, the electro-magnet, annular chute, the coordinate line, driving motor, first gear, the second gear, the connecting rod, a pedestal, the bracing piece, the connecting axle, the stopper, adjust the pole, first demonstration groove, the second demonstration board, retrieve the box, first demonstration piece, the second demonstration groove, the gag lever post, the fixture block, the connecting block, power module, the carriage release lever, the calculus board, the cardboard, horizontal pole and pivot. The rotating plate and the clamping block can adjust the positions of the first demonstration groove and the second demonstration groove, and the first demonstration block and the second demonstration block move to dynamically demonstrate the parabola; the adjusting rod and the limiting block can limit the cross rod, the rotating shaft and the paperboard are beneficial to demonstration and recording of parabolas, the demonstration mode of the parabolas is increased, and the interest of students in learning is improved; the base and the connecting rod can keep the stability of the whole device, and the driving motor and the connecting rod can rotate the whole device, so that the device is convenient to show in all directions.

Description

Dynamic demonstration device for junior middle school mathematics parabola

Technical Field

The application relates to a demonstration device, in particular to a dynamic demonstration device for junior middle school mathematics parabola.

Background

A parabola refers to the locus of points in a plane equidistant from a fixed point F (the focal point) and a fixed line l (the directrix). There are many representations, such as parametric representations, standard equation representations, and so on. It has important uses in geometrical optics and mechanics. A parabola is also a type of conic curve, i.e., a curve in which the plane of a cone intersects a plane parallel to a certain generatrix. The parabola can also be regarded as a quadratic function image under a proper coordinate transformation.

When carrying out the developments demonstration to the parabola, the position of demonstration board is inconvenient to be adjusted, is unfavorable for the multi-angle demonstration parabola, and the demonstration mode of parabola is comparatively single, is unfavorable for arousing student's interest of study, influences the demonstration effect, and presentation device's angle is difficult for adjusting, is unfavorable for the student of all directions to watch when the demonstration, uses and operates inconveniently. Therefore, a dynamic demonstration device for the mathematics parabola in the junior middle schools is provided for solving the problems.

Disclosure of Invention

A dynamic demonstration device for a junior middle school mathematics parabola comprises a base, a demonstration mechanism and an adjusting mechanism, wherein a supporting rod is sleeved at the top of the base, and a fixing plate is installed at the top of the supporting rod;

the demonstration mechanism comprises a rotating plate, a first demonstration block and a cross rod, the rotating plate is clamped in the annular sliding groove, the rotating plate is rotatably connected with the first demonstration plate, a first demonstration groove and a second demonstration groove are formed in the rotating plate, the first demonstration block and the second demonstration block are respectively clamped in the first demonstration groove and the second demonstration groove, and the cross rod is installed in the second demonstration plate;

the adjusting mechanism comprises an electromagnet, a driving motor and a limiting block, the driving motor is fixedly connected to the top of the base, the electromagnet is fixedly connected to one side of the rotating plate, the electromagnet is connected with the moving rod through magnetism, the limiting block is fixedly connected to the bottom of the second demonstration plate, and an adjusting rod is mounted at the bottom of the limiting block.

Further, be provided with the coordinate line on the rotor plate, the coordinate line is located annular spout inboard, annular spout is seted up on first demonstration board, first demonstration board both sides rigid coupling respectively has calculation board and second demonstration board.

Furthermore, one side of the rotating plate close to the calculation plate is fixedly connected with four clamping blocks, the clamping blocks are connected with a limiting rod in a clamping mode, the limiting rod is fixedly connected to the first demonstration plate, and the limiting rod is located on the outer side of the annular sliding groove.

Furthermore, the first demonstration block and the second demonstration block are respectively in sliding connection with the first demonstration groove and the second demonstration groove, the tail ends of the first demonstration block and the second demonstration block are connected onto a power supply module in an inserting mode, the power supply module is fixedly connected inside a connecting block, the tail end of the connecting block is fixedly connected with a moving rod, and the connecting block is located on the outer side of the annular sliding groove.

Further, a connecting rod is fixedly connected to the bottom of the supporting rod, the bottom end of the connecting rod is sleeved at the bottom of the inner cavity of the base, the connecting rod is rotatably connected with the base, a second gear is sleeved on the connecting rod, a first gear is meshed on the left side of the second gear, and the first gear is fixedly connected to an output shaft of the driving motor.

Further, the rigid coupling has the cardboard on the second demonstration inboard wall, the size of cardboard is greater than the horizontal pole, horizontal pole right-hand member rigid coupling has pivot one side, pivot opposite side rigid coupling is on the fixed block, the fixed block rigid coupling is in second demonstration intralamellar cavity bottom, the spring has been cup jointed in the pivot.

Further, the cross rod is connected with the fixed block in a rotating mode, an adjusting rod is fixedly connected to one side, far away from the fixed block, of the cross rod, the top of the adjusting rod is connected with the bottom of the adjusting rod in a rotating mode, and the bottom of the adjusting rod is clamped on the limiting block in a clamping mode.

Further, the standing groove has been seted up at the horizontal pole top, the standing groove is the arc, the length of horizontal pole is greater than adjusts the pole, it runs through second demonstration board bottom lateral wall to adjust the pole, second demonstration board bottom right side rigid coupling has the recovery box, the accumulator tank has been seted up at recovery box top.

Further, second demonstration board one side block has the cardboard, the cardboard size is less than the cardboard, the cardboard is located the stopper and retrieves between the box, the size of retrieving the box is greater than the stopper.

Further, the equal rigid coupling of calculation board and second demonstration board is on the fixed plate, fixed plate bottom rigid coupling has the connecting axle, the connecting axle cup joints at the bracing piece top, just the diameter of connecting axle is greater than the bracing piece.

The beneficial effect of this application is: the application provides a rotatable junior middle school mathematics parabola dynamic demonstration device with multiple demonstration functions.

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 perspective view of an embodiment of the present application;

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

FIG. 3 is a schematic diagram of an electromagnet according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a power module according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a structure of a computer according to an embodiment of the present application;

fig. 6 is a schematic cross-bar structure according to an embodiment of the present application.

In the figure: 1. first demonstration board, 101, fixed plate, 2, rotor plate, 201, electro-magnet, 3, annular spout, 4, coordinate line, 5, driving motor, 6, first gear, 7, second gear, 8, connecting rod, 9, base, 10, bracing piece, 11, connecting axle, 12, stopper, 1201, adjust the pole, 13, first demonstration groove, 14, second demonstration board, 1401, retrieve the box, 15, first demonstration piece, 16, second demonstration piece, 17, second demonstration groove, 18, gag lever post, 19, fixture block, 20, connecting block, 2001, power module, 21, carriage release lever, 22, calculation board, 23, cardboard, 24, horizontal pole, 25, pivot.

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.

Referring to fig. 1-6, a dynamic demonstration apparatus for mathematics parabola in junior middle school includes a base 9, a demonstration mechanism and an adjusting mechanism, wherein a support rod 10 is sleeved on the top of the base 9, and a fixing plate 101 is installed on the top of the support rod 10;

the demonstration mechanism comprises a rotating plate 2, a first demonstration block 15 and a cross rod 24, the rotating plate 2 is clamped in the annular sliding groove 3, the rotating plate 2 is rotatably connected with the first demonstration plate 1, a first demonstration groove 13 and a second demonstration groove 17 are formed in the rotating plate 2, the first demonstration block 15 and the second demonstration block 16 are clamped in the first demonstration groove 13 and the second demonstration groove 17 respectively, and the cross rod 24 is installed in the second demonstration plate 14;

adjustment mechanism includes electro-magnet 201, driving motor 5 and stopper 12, driving motor 5 rigid coupling is at the base 9 top, electro-magnet 201 rigid coupling is in rotor plate 2 one side, be connected through magnetism between electro-magnet 201 and the carriage release lever 21, stopper 12 rigid coupling is in second demonstration board 14 bottom, stopper 12 bottom is installed and is adjusted pole 1201.

A coordinate line 4 is arranged on the rotating plate 2, the coordinate line 4 is positioned on the inner side of the annular chute 3, the annular chute 3 is arranged on the first demonstration plate 1, and an operation plate 22 and a second demonstration plate 14 are fixedly connected to two sides of the first demonstration plate 1 respectively, so that the rotating plate 2 can rotate in the annular chute 3; one side of the rotating plate 2 close to the operation plate 22 is fixedly connected with four clamping blocks 19, the clamping blocks 19 are clamped and connected with a limiting rod 18, the limiting rod 18 is fixedly connected on the first demonstration plate 1, and the limiting rod 18 is positioned on the outer side of the annular sliding groove 3, so that the limiting rod 18 can limit the position of the rotating plate 2; the first demonstration block 15 and the second demonstration block 16 are respectively connected with the first demonstration groove 13 and the second demonstration groove 17 in a sliding mode, the tail ends of the first demonstration block 15 and the second demonstration block 16 are connected to the power supply module 2001 in an inserting mode, the power supply module 2001 is fixedly connected to the inner portion of the connecting block 20, the tail end of the connecting block 20 is fixedly connected with the moving rod 21, and the connecting block 20 is located on the outer side of the annular sliding groove 3, so that the first demonstration block 15 and the second demonstration block 16 can be conveniently installed and used; the bottom of the support rod 10 is fixedly connected with a connecting rod 8, the bottom end of the connecting rod 8 is sleeved at the bottom of an inner cavity of the base 9, the connecting rod 8 is rotatably connected with the base 9, the connecting rod 8 is sleeved with a second gear 7, the left side of the second gear 7 is engaged with a first gear 6, and the first gear 6 is fixedly connected to an output shaft of the driving motor 5, so that the support rod 10 can rotate conveniently; a paper board 23 is fixedly connected to the inner wall of the second demonstration board 14, the size of the paper board 23 is larger than that of a cross rod 24, the right end of the cross rod 24 is fixedly connected with one side of a rotating shaft 25, the other side of the rotating shaft 25 is fixedly connected to a fixed block, the fixed block is fixedly connected to the bottom of the inner cavity of the second demonstration board 14, and a spring is sleeved on the rotating shaft 25 to facilitate installation and rotation of the cross rod 24; the cross rod 24 is rotatably connected with the fixed block, an adjusting rod 1201 is fixedly connected to one side of the cross rod 24, which is far away from the fixed block, the top and the bottom of the adjusting rod 1201 are rotatably connected, and the bottom of the adjusting rod 1201 is clamped on the limiting block 12, so that the limiting of the adjusting rod 1201 is facilitated; the top of the cross bar 24 is provided with a placing groove which is arc-shaped, the length of the cross bar 24 is larger than that of the adjusting bar 1201, the adjusting bar 1201 penetrates through the side wall of the bottom of the second demonstration board 14, the right side of the bottom of the second demonstration board 14 is fixedly connected with a recovery box 1401, and the top of the recovery box 1401 is provided with a recovery groove, so that the recovery and utilization of marbles are facilitated; a clamping plate is clamped on one side of the second demonstration plate 14, the size of the clamping plate is smaller than that of the paper plate 23, the clamping plate is located between the limiting block 12 and the recovery box 1401, and the size of the recovery box 1401 is larger than that of the limiting block 12, so that the position of the cross rod 24 can be conveniently adjusted; the equal rigid coupling of calculation board 22 and second demonstration board 14 is on fixed plate 101, fixed plate 101 bottom rigid coupling has connecting axle 11, connecting axle 11 cup joints at bracing piece 10 top, just the diameter of connecting axle 11 is greater than bracing piece 10, and the demonstration of the whole device of being convenient for is used.

When the demonstration device is used, electrical elements appearing in the demonstration device are externally connected with a power supply and a control switch when the demonstration device is used, firstly, a first demonstration block 15 and a second demonstration block 16 are respectively inserted into two connecting blocks 20, LED lamp circuits inside the first demonstration block 15 and the second demonstration block 16 are communicated with a power supply module 2001 to be lightened, a movable moving rod 21 can be moved to manually realize the movement of the first demonstration block 15 and the second demonstration block 16 inside a first demonstration groove 13 and a second demonstration groove 17 to dynamically demonstrate a parabola, a rotating plate 2 is rotated by 90 degrees inside an annular sliding groove 3, a clamping block 19 is clamped on a limiting rod 18, the clamping block 19 and the rotating plate 2 are fixed by using a bolt to enable the first demonstration groove 13 and the second demonstration groove 17 to be kept horizontal, when an electromagnet 201 is electrified, the positions of the first demonstration block 15 and the second demonstration block 16 can be fixed, and the first demonstration block 15 and the second demonstration block 16 are prevented from sliding, when adjusting pole 1201 and stopper 12 block, the last spring of pivot 25 is in taut state, adjust pole 1201 bottom and stopper 12 separation, loosen and adjust pole 1201, the spring drives horizontal pole 24 and shifts up, throw the marble in the standing groove, the marble rubs with cardboard 23 and leaves the removal orbit, the marble passes through the accumulator entry and retrieves in the box 1401, open the cardboard, pulling is adjusted pole 1201, make and adjust pole 1201 and reset, driving motor 5 drives first gear 6 and second gear 7 and rotates, adjust the demonstration position of whole device, calculation board 22 can calculate the orbit of parabola, and is functional stronger.

The application has the advantages that:

1. the rotating plate 2 and the clamping block 19 can adjust the positions of the first demonstration groove 13 and the second demonstration groove 17, the power supply module 2001 is favorable for the connection of the second demonstration block 16 and the connecting block 20, and the moving rod 21 is favorable for the movement of the first demonstration block 15 and the second demonstration block 16, so that the dynamic demonstration of a parabola is facilitated;

2. the telescopic type marble recycling box is reasonable in structure, the adjusting rod 1201 and the limiting block 12 can limit the cross rod 24, the rotating shaft 25 and the paper board 23 are beneficial to demonstration and recording of parabolas, the demonstration mode of parabolas is increased, the learning interestingness of students is improved, and the recycling box 1401 and the clamping board are beneficial to resetting of marbles and the cross rod 24;

3. the operation board 22 is beneficial to recording of parabola knowledge, the connecting shaft 11 is beneficial to connecting the fixing plate 101 and the supporting rod 10, the base 9 and the connecting rod 8 can keep the stability of the whole device, and the driving motor 5 and the connecting rod 8 are beneficial to the rotation of the whole device, so that the omnibearing display is facilitated.

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 mathematics parabola developments presentation device which characterized in that: the demonstration device comprises a base (9), a demonstration mechanism and an adjusting mechanism, wherein a supporting rod (10) is sleeved at the top of the base (9), and a fixing plate (101) is installed at the top of the supporting rod (10);

the demonstration mechanism comprises a rotating plate (2), a first demonstration block (15) and a cross rod (24), the rotating plate (2) is clamped in an annular sliding groove (3), the rotating plate (2) is rotatably connected with the first demonstration plate (1), a first demonstration groove (13) and a second demonstration groove (17) are formed in the rotating plate (2), the first demonstration block (15) and the second demonstration block (16) are clamped in the first demonstration groove (13) and the second demonstration groove (17) respectively, and the cross rod (24) is installed in the second demonstration plate (14);

adjustment mechanism includes electro-magnet (201), driving motor (5) and stopper (12), driving motor (5) rigid coupling is at base (9) top, electro-magnet (201) rigid coupling is in rotor plate (2) one side, be connected through magnetism between electro-magnet (201) and carriage release lever (21), stopper (12) rigid coupling is in second demonstration board (14) bottom, regulation pole (1201) is installed to stopper (12) bottom.

2. The dynamic demonstration device for junior middle school mathematics parabola according to claim 1, characterized in that: be provided with coordinate line (4) on rotor plate (2), coordinate line (4) are located annular spout (3) inboardly, set up on first demonstration board (1) annular spout (3), first demonstration board (1) both sides rigid coupling respectively has calculation board (22) and second demonstration board (14).

3. The dynamic demonstration device for junior middle school mathematics parabola according to claim 1, characterized in that: one side rigid coupling that rotor plate (2) are close to calculation board (22) has four fixture blocks (19), fixture block (19) are connected with gag lever post (18) block, gag lever post (18) rigid coupling is on first demonstration board (1), gag lever post (18) are located the annular spout (3) outside.

4. The dynamic demonstration device for junior middle school mathematics parabola according to claim 1, characterized in that: the demonstration device is characterized in that the first demonstration block (15) and the second demonstration block (16) are in sliding connection with the first demonstration groove (13) and the second demonstration groove (17) respectively, the tail ends of the first demonstration block (15) and the second demonstration block (16) are connected onto the power supply module (2001) in an inserted mode, the power supply module (2001) is fixedly connected inside the connecting block (20), the tail end of the connecting block (20) is fixedly connected with the moving rod (21), and the connecting block (20) is located on the outer side of the annular sliding groove (3).

5. The dynamic demonstration device for junior middle school mathematics parabola according to claim 1, characterized in that: bracing piece (10) bottom rigid coupling has connecting rod (8), connecting rod (8) bottom cup joints in base (9) inner chamber bottom, rotate between connecting rod (8) and base (9) and be connected, second gear (7) have been cup jointed on connecting rod (8), second gear (7) left side meshing has first gear (6), first gear (6) rigid coupling is on the output shaft of driving motor (5).

6. The dynamic demonstration device for junior middle school mathematics parabola according to claim 1, characterized in that: cardboard (23) are fixed on second demonstration board (14) inner wall, the size of cardboard (23) is greater than horizontal pole (24), horizontal pole (24) right-hand member rigid coupling has pivot (25) one side, pivot (25) opposite side rigid coupling is on the fixed block, the fixed block rigid coupling is in second demonstration board (14) inner chamber bottom, the spring has been cup jointed in pivot (25).

7. The dynamic demonstration device of junior middle school mathematics parabola according to claim 6, characterized in that: the cross rod (24) is rotatably connected with the fixed block, an adjusting rod (1201) is fixedly connected to one side, far away from the fixed block, of the cross rod (24), the top of the adjusting rod (1201) is rotatably connected with the bottom of the adjusting rod, and the bottom of the adjusting rod (1201) is clamped on the limiting block (12).

8. The dynamic demonstration apparatus for junior middle school mathematics parabola according to claim 7, wherein: the top of the cross rod (24) is provided with a placing groove which is arc-shaped, the length of the cross rod (24) is larger than that of the adjusting rod (1201), the adjusting rod (1201) penetrates through the side wall of the bottom of the second demonstration board (14), the right side of the bottom of the second demonstration board (14) is fixedly connected with a recovery box (1401), and the top of the recovery box (1401) is provided with a recovery groove.

9. The dynamic demonstration device for junior middle school mathematics parabola according to claim 1, characterized in that: the cardboard is blocked to second demonstration board (14) one side, the cardboard size is less than cardboard (23), the cardboard is located stopper (12) and retrieves between box (1401), the size of retrieving box (1401) is greater than stopper (12).

10. A dynamic demonstration apparatus for junior middle school mathematics parabola according to claim 2, wherein: the equal rigid coupling of calculation board (22) and second demonstration board (14) is on fixed plate (101), fixed plate (101) bottom rigid coupling has connecting axle (11), connecting axle (11) cup joint at bracing piece (10) top, just the diameter of connecting axle (11) is greater than bracing piece (10).