CN220651484U - Physical mechanics demonstration device - Google Patents
Physical mechanics demonstration device Download PDFInfo
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- CN220651484U CN220651484U CN202320864140.8U CN202320864140U CN220651484U CN 220651484 U CN220651484 U CN 220651484U CN 202320864140 U CN202320864140 U CN 202320864140U CN 220651484 U CN220651484 U CN 220651484U
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 142
- 229910052742 iron Inorganic materials 0.000 claims abstract description 71
- 238000007789 sealing Methods 0.000 claims description 26
- 238000004891 communication Methods 0.000 claims description 13
- 230000003139 buffering effect Effects 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model belongs to the field of physical teaching demonstration teaching aids, in particular to a physical mechanics demonstration device, which aims at the problems that the existing two iron balls can be subjected to the action of air resistance in the falling process, cannot fall to the ground at the same time, presentation of demonstration results is affected, the two iron balls cannot be accurately controlled to fall down at the same time, and accuracy of physical mechanics demonstration can be affected; the vacuumizing mechanism is arranged at the top of the placement seat and used for building a vacuum environment in the demonstration box for physical and mechanical demonstration, building a vacuum environment for physical and mechanical demonstration, eliminating the influence of air resistance on the falling of two iron balls, and ensuring the falling of the two iron balls simultaneously and the accuracy and reliability of the physical and mechanical demonstration.
Description
Technical Field
The utility model relates to the technical field of physical teaching demonstration teaching aids, in particular to a physical mechanics demonstration device.
Background
The physics is the subject for researching the most general law of substance movement and the basic structure of substances, and in the physical teaching process, a teacher needs to demonstrate the physical mechanics on site so as to enable students to intuitively and clearly understand the physical movement process, and two iron balls made by Galileo fall to the ground at the same time to be a very well-known demonstration test in the physical mechanics.
Most of the existing demonstration modes of simultaneously falling two iron balls are that teachers hold two iron balls with the same volume and different quality fall from the same height, students observe whether the two iron balls with different quality can fall to the ground at the same time, and the physical mechanics demonstration mode has the following obvious problems:
1. the two iron balls can be subjected to the action of air resistance in the falling process, and cannot fall to the ground at the same time, so that presentation of a demonstration result is not affected;
2. the two iron balls cannot be accurately controlled to fall down at the same time, and the accuracy of physical and mechanical demonstration can be affected.
Aiming at the problems, the utility model provides a physical and mechanical demonstration device.
Disclosure of Invention
The utility model provides a physical and mechanical demonstration device, which solves the defects that in the prior art, two iron balls can be subjected to the action of air resistance in the falling process, cannot fall on the ground at the same time, influence the presentation of demonstration results, cannot accurately control the two iron balls to fall at the same time, and influence the accuracy of physical and mechanical demonstration.
The utility model provides the following technical scheme:
the physical mechanics demonstration device comprises a placement seat, a demonstration box with an opening is arranged at the top fixedly connected with the top of the placement seat, the demonstration box is made of transparent plastic, and a sealing cover for sealing the opening of the demonstration box is arranged at the top of the demonstration box in a sealing and sliding manner;
the iron ball placing mechanism is arranged in the demonstration box and is used for placing two iron balls with the same volume and different masses;
the vacuumizing mechanism is arranged at the top of the placing seat and used for creating a vacuum environment inside the demonstration box for physical and mechanical demonstration.
In one possible design, the iron ball placing mechanism comprises two placing plates fixedly mounted on the inner walls of two opposite sides of the demonstration box, iron ball placing holes which are used for placing iron balls and can smoothly fall down are formed in the tops of the placing plates, and iron plates which can slide horizontally along the bottoms of the placing plates and are used for blocking the iron ball placing holes are arranged at the bottoms of the placing plates.
In one possible design, the bottom of the placing plate is fixedly provided with an electromagnet which is connected with the iron plate in a detachable magnetic attraction manner, the bottom of the placing plate is fixedly provided with two symmetrically arranged mounting plates, the outer sides of the two mounting plates are fixedly provided with insulating springs which are horizontally arranged, and the end parts of the two insulating springs are fixedly connected with the outer sides of the iron plates corresponding to the two insulating springs.
In one possible design, the vacuumizing mechanism comprises a vacuum pump fixedly mounted at the top of the placement seat, an input end of the vacuum pump is in sealed communication with an air inlet pipe with an end part communicated with the interior of the demonstration box in a sealed manner, and an output end of the vacuum pump is in sealed communication with an air outlet pipe.
In one possible design, the demonstration box is provided with a sealed drawer in a sealing sliding manner, a buffering foam pad for buffering the falling of the iron ball is arranged in the sealed drawer, and a handle is fixedly arranged on one side, away from the demonstration box, of the sealed drawer.
In one possible design, a power supply battery is fixedly installed on the outer side of the demonstration box, and the two electromagnets are electrically connected with the power supply battery.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model as claimed.
According to the utility model, through the vacuum pump and the air inlet pipe, after the vacuum pump is started, air in the demonstration box can be pumped out, a vacuum environment is created for physical and mechanical demonstration, the influence of air resistance on the falling of two iron balls is eliminated, and the accuracy and reliability of the physical and mechanical demonstration are ensured;
according to the utility model, by arranging the two electromagnets, the iron plates and the placing plates with the same specification, after the two electromagnets are electrified, the two iron plates can be acted to horizontally move to the far side, and two iron balls with different masses and the same volume in the iron ball placing holes can simultaneously pass through and fall from the two iron ball placing holes, so that the simultaneous falling of the two iron balls can be ensured, and the accuracy of physical and mechanical demonstration is further improved;
in the utility model, a vacuum environment is created for physical and mechanical demonstration, the influence of air resistance on the falling of two iron balls is eliminated, the falling of the two iron balls can be ensured at the same time, and the accuracy and reliability of the physical and mechanical demonstration are ensured.
Drawings
Fig. 1 is a schematic structural diagram of a physical and mechanical demonstration device according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of another state structure of fig. 1 of a physical and mechanical demonstration device according to an embodiment of the present utility model;
fig. 3 is a schematic bottom view of a placement board of the physical and mechanical demonstration device provided by the embodiment of the utility model;
fig. 4 is an enlarged schematic structural diagram of a portion a of the physical and mechanical demonstration device according to the embodiment of the present utility model.
Reference numerals:
1. a placement seat; 2. a presentation box; 3. a vacuum pump; 4. an air inlet pipe; 5. sealing the drawer; 6. a handle; 7. a cushion foam pad; 8. sealing cover; 9. placing a plate; 10. iron ball placing holes; 11. an iron plate; 12. a mounting plate; 13. an insulating spring; 14. an electromagnet; 15. and (5) positioning the plate.
Detailed Description
Embodiments of the present utility model will be described below with reference to the accompanying drawings in the embodiments of the present utility model.
In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled" and "mounted" should be interpreted broadly, and for example, "coupled" may or may not be detachably coupled; may be directly connected or indirectly connected through an intermediate medium. In addition, "communication" may be direct communication or may be indirect communication through an intermediary. Wherein, "fixed" means that the relative positional relationship is not changed after being connected to each other. References to orientation terms, such as "inner", "outer", "top", "bottom", etc., in the embodiments of the present utility model are merely to refer to the orientation of the drawings and, therefore, the use of orientation terms is intended to better and more clearly illustrate and understand the embodiments of the present utility model, rather than to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the embodiments of the present utility model.
In embodiments of the present utility model, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
In the embodiment of the present utility model, "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the utility model. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.
Example 1
Referring to fig. 1 and 2, the physical and mechanical demonstration device comprises a placement seat 1, a demonstration box 2 with an opening is arranged at the top fixedly connected with the top of the placement seat 1, the demonstration box 2 is made of transparent plastic, and a sealing cover 8 for sealing the opening of the demonstration box 2 is arranged at the top of the demonstration box 2 in a sealing and sliding manner;
the iron ball placing mechanism is arranged in the demonstration box 2 and is used for placing two iron balls with the same volume and different masses;
the vacuumizing mechanism is arranged at the top of the placement seat 1 and is used for creating a vacuum environment inside the demonstration box 2 for physical and mechanical demonstration.
Referring to fig. 2-4, the iron ball placing mechanism comprises two placing plates 9 fixedly installed on the inner walls of two opposite sides of the demonstration box 2, iron ball placing holes 10 which are used for placing iron balls and can smoothly fall down are formed in the tops of the placing plates 9, and iron plates 11 which can horizontally slide along the bottoms of the placing plates 9 and are used for sealing the iron ball placing holes 10 are arranged at the bottoms of the placing plates 9.
Referring to fig. 1 and 2, the vacuumizing mechanism comprises a vacuum pump 3 fixedly installed at the top of a placement seat 1, an input end of the vacuum pump 3 is in sealed communication with an air inlet pipe 4, an end of the air inlet pipe is in sealed communication with the interior of a demonstration box 2, and an output end of the vacuum pump 3 is in sealed communication with an exhaust pipe.
Example 2
Referring to fig. 1 and 2, the physical and mechanical demonstration device comprises a placement seat 1, a demonstration box 2 with an opening is arranged at the top fixedly connected with the top of the placement seat 1, the demonstration box 2 is made of transparent plastic, and a sealing cover 8 for sealing the opening of the demonstration box 2 is arranged at the top of the demonstration box 2 in a sealing and sliding manner;
the iron ball placing mechanism is arranged in the demonstration box 2 and is used for placing two iron balls with the same volume and different masses;
the vacuumizing mechanism is arranged at the top of the placement seat 1 and is used for creating a vacuum environment in the demonstration box 2 for physical and mechanical demonstration;
in the above technical scheme, the positioning plate 15 is disposed on one side of the demonstration box 2 far away from the sealing cover 8, and is used for positioning the sealing position of the sealing cover 8.
Referring to fig. 2-4, the iron ball placing mechanism comprises two placing plates 9 fixedly installed on the inner walls of two opposite sides of the demonstration box 2, iron ball placing holes 10 for placing iron balls and enabling the iron balls to smoothly fall are formed in the tops of the placing plates 9, iron plates 11 capable of sliding horizontally along the bottoms of the placing plates 9 and used for blocking the iron ball placing holes 10 are arranged at the bottoms of the placing plates 9, electromagnets 14 which are detachably connected with the iron plates 11 are fixedly installed at the bottoms of the placing plates 9, two mounting plates 12 which are symmetrically arranged are fixedly installed at the bottoms of the placing plates 9, insulating springs 13 which are horizontally arranged are fixedly installed at the outer sides of the two mounting plates 12, and the end parts of the two insulating springs 13 are fixedly connected with the outer sides of the corresponding iron plates 11;
according to the technical scheme, specifications of the electromagnet 14 and the insulating spring 13 can be selected according to actual use, the iron insulating spring 13 is in a normal telescopic state in fig. 1 and 2, and when the electromagnet 14 is electrified, the magnet plate 11 can move horizontally, and at the moment, the insulating spring 13 is stressed to deform.
Referring to fig. 1 and 2, the vacuumizing mechanism comprises a vacuum pump 3 fixedly arranged at the top of a placing seat 1, an air inlet pipe 4 with an end part in sealed communication with the interior of a demonstration box 2 is connected with the input end of the vacuum pump 3, and an exhaust pipe is connected with the output end of the vacuum pump 3 in sealed communication;
according to the technical scheme, the specification of the vacuum pump 3 can be selected according to actual use, and the vacuum pump has the function of enabling the interior of the demonstration box 2 to be in a vacuum state, so that no air resistance exists during physical and mechanical demonstration.
Referring to fig. 2, a sealed drawer 5 is mounted on the demonstration box 2 in a sealing and sliding manner, a buffering foam pad 7 for buffering falling of iron balls is arranged in the sealed drawer 5, a handle 6 is fixedly mounted on one side, away from the demonstration box 2, of the sealed drawer 5, a power supply battery is fixedly mounted on the outer side of the demonstration box 2, and two electromagnets 14 are electrically connected with the power supply battery;
in the above technical scheme, the specification of the power supply battery can be selected according to actual requirements, the power supply battery is electrically connected with the electromagnet 14 through a wire, and the specific structure of the electromagnet 14 can be selected according to actual requirements.
However, as is well known to those skilled in the art, the vacuum pump 3, the cushion foam pad 7, the iron plate 11, the insulating spring 13 and the electromagnet 14 are all general standard components or components known to those skilled in the art, and the structure and principle thereof are all known to those skilled in the art through technical manuals or through routine experimental methods.
The application can be used in the field of physical and mechanical demonstration, and can also be used in other fields suitable for the application.
The working principle and the using flow of the technical scheme are as follows: when the physical and mechanical demonstration that two iron balls fall to the ground simultaneously is needed, a demonstrator places two iron balls with different mass and same volume in the two iron ball placing holes 10 respectively, then the sliding sealing cover 8 seals the opening of the demonstration box 2, the sealing drawer 5 and the demonstration box 2 are in a sealing state, the switch of the vacuum pump 3 is pressed down, the vacuum pump 3 is started, the inside of the demonstration box 2 is in a vacuum state through the arranged air inlet pipe 4, the influence of air resistance is eliminated to the greatest extent, the power supply battery is pressed to supply power to the two electromagnets 14, the two iron plates 11 can be acted to move horizontally to the side far away from each other, the two iron balls with different mass and same volume in the iron ball placing holes 10 can simultaneously pass through the two iron ball placing holes 10 and fall to the inside of the sealing drawer 5, a viewer can observe whether the two iron balls fall to the ground simultaneously at the outside, the learning interest of the viewer can be stimulated, and the confusion of the viewer is eliminated.
The present utility model is not limited to the above embodiments, and any person skilled in the art can easily think about the changes or substitutions within the technical scope of the present utility model, and the changes or substitutions are intended to be covered by the scope of the present utility model; embodiments of the utility model and features of the embodiments may be combined with each other without conflict. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.
Claims (6)
1. The utility model provides a physical mechanics presentation device which characterized in that includes:
the device comprises a placing seat (1), wherein an open demonstration box (2) is arranged at the top fixedly connected with the top of the placing seat (1), the demonstration box (2) is made of transparent plastic, and a sealing cover (8) for sealing the opening of the demonstration box (2) is arranged at the top of the demonstration box (2) in a sealing and sliding manner;
the iron ball placing mechanism is arranged in the demonstration box (2) and is used for placing two iron balls with the same volume and different masses;
the vacuumizing mechanism is arranged at the top of the placement seat (1) and used for creating a vacuum environment inside the demonstration box (2) for physical and mechanical demonstration.
2. The physical and mechanical demonstration device according to claim 1, wherein the iron ball placing mechanism comprises two placing plates (9) fixedly installed on two opposite side inner walls of the demonstration box (2), iron ball placing holes (10) which are used for placing iron balls and can smoothly fall down are formed in the tops of the placing plates (9), and iron plates (11) which can horizontally slide along the bottoms of the placing plates (9) and are used for sealing the iron ball placing holes (10) are arranged at the bottoms of the placing plates (9).
3. The physical and mechanical demonstration device according to claim 2, wherein an electromagnet (14) which is detachably connected with the iron plate (11) is fixedly arranged at the bottom of the placing plate (9), two symmetrically arranged mounting plates (12) are fixedly arranged at the bottom of the placing plate (9), insulating springs (13) which are horizontally arranged are fixedly arranged at the outer sides of the two mounting plates (12), and the end parts of the two insulating springs (13) are fixedly connected with the outer sides of the iron plates (11) corresponding to the insulating springs.
4. A physical and mechanical demonstration device according to any one of claims 1 to 3, wherein the vacuumizing mechanism comprises a vacuum pump (3) fixedly arranged at the top of the placement seat (1), an input end of the vacuum pump (3) is in sealed communication with an air inlet pipe (4) with an end part in sealed communication with the interior of the demonstration box (2), and an output end of the vacuum pump (3) is in sealed communication with an air outlet pipe.
5. The physical and mechanical demonstration device according to claim 1, wherein a sealed drawer (5) is mounted on the demonstration box (2) in a sealing sliding manner, a buffering foam pad (7) for buffering falling of iron balls is arranged in the sealed drawer (5), and a handle (6) is fixedly mounted on one side, away from the demonstration box (2), of the sealed drawer (5).
6. A physical and mechanical demonstration device according to claim 3, characterized in that the outer side of the demonstration box (2) is fixedly provided with a power supply battery, and both electromagnets (14) are electrically connected with the power supply battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320864140.8U CN220651484U (en) | 2023-04-18 | 2023-04-18 | Physical mechanics demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320864140.8U CN220651484U (en) | 2023-04-18 | 2023-04-18 | Physical mechanics demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220651484U true CN220651484U (en) | 2024-03-22 |
Family
ID=90291775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320864140.8U Active CN220651484U (en) | 2023-04-18 | 2023-04-18 | Physical mechanics demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220651484U (en) |
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2023
- 2023-04-18 CN CN202320864140.8U patent/CN220651484U/en active Active
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