CN220041249U - Gravity center and stability demonstration teaching aid - Google Patents
Gravity center and stability demonstration teaching aid Download PDFInfo
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- CN220041249U CN220041249U CN202321224012.3U CN202321224012U CN220041249U CN 220041249 U CN220041249 U CN 220041249U CN 202321224012 U CN202321224012 U CN 202321224012U CN 220041249 U CN220041249 U CN 220041249U
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- rotating shaft
- gravity center
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- teaching aid
- horizontal rotating
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- 230000005484 gravity Effects 0.000 title claims abstract description 49
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The gravity center and stability demonstration teaching aid comprises a horizontal rotating shaft, two supporting seats and a demonstrator arranged on the horizontal rotating shaft. The lower part of the demonstrator is provided with a counterweight structure. The two supporting seats are arranged at intervals in the length direction of the horizontal rotating shaft, and two ends of the horizontal rotating shaft in the length direction are respectively connected with the supporting seats in a rotating mode. The demonstration device is provided with a mounting channel penetrating the demonstration device along a first direction at the upper part of the horizontal rotating shaft, a screw rod is arranged in the mounting channel, extends in the up-down direction and is fixedly connected with the demonstration ship, the screw rod is intersected with the rotating shaft, a counterweight adjusting block is arranged on the screw rod, and the counterweight adjusting block is connected with the screw rod through threads so that the counterweight adjusting block moves in the length direction of the screw rod. According to the gravity center and stability demonstration teaching aid, the gravity center of the demonstrator can be adjusted by arranging the counterweight adjusting block, and then the relation between the gravity center and the stability can be demonstrated by using the demonstrator.
Description
Technical Field
The utility model belongs to the technical field of teaching aids, and particularly relates to a gravity center and stability demonstration instrument.
Background
In the related art, the relationship between the gravity center and the stability is usually explained by adopting the principle of a tumbler, but the interpretation mode is limited, and only the low stability of the gravity center can be statically demonstrated, and the relationship between the gravity center and the stability cannot be dynamically demonstrated.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems in the related art to some extent.
Therefore, the embodiment of the utility model provides a gravity center and stability demonstration teaching aid.
The gravity center and stability demonstration teaching aid of the embodiment of the utility model comprises:
the horizontal rotating shaft is provided with a demonstrator, and the lower part of the demonstrator is provided with a counterweight structure so that the gravity center of the demonstration ship is positioned below the rotating shaft;
the two support seats are arranged at intervals in the length direction of the horizontal rotating shaft, and two ends of the horizontal rotating shaft in the length direction are respectively connected with the support seats in a rotating manner;
the portion of the demonstrator above the horizontal rotation axis is provided with a mounting channel penetrating the demonstration boat along a first direction,
a screw rod is arranged in the installation channel, the screw rod extends in the up-down direction and is fixedly connected with the demonstration boat, a straight line where the axis of the screw rod is positioned intersects with a straight line where the axis of the rotating shaft is positioned,
the screw is provided with a counterweight adjusting block, and the counterweight adjusting block is connected with the screw through threads so that the counterweight adjusting block moves in the length direction of the screw.
In some embodiments, the weight adjustment block is a metal nut.
In some embodiments, the counterweight structure of the presentation vessel includes a plurality of metal blocks.
In some embodiments, the plurality of metal blocks is at least one of an iron block, a copper block, and an aluminum block.
In some embodiments, the two supporting seats are a first bearing seat and a second bearing seat, the first bearing seat and the second bearing seat are arranged at intervals in the length direction of the rotating shaft, and the positions of the first bearing seat and the second bearing seat corresponding to the horizontal rotating shaft are respectively provided with a first bearing and a second bearing;
in some embodiments, the upper end of the first bearing seat has a first mounting notch for mounting the first bearing.
In some embodiments, the upper end of the first bearing seat has a second mounting notch for mounting a second bearing.
Drawings
FIG. 1 is a schematic diagram of a gravity center and stability demonstrator according to an embodiment of the utility model;
FIG. 2 is a view in direction A of FIG. 1;
FIG. 3 is a view in the direction B of FIG. 1;
fig. 4 is a schematic structural view of another embodiment of a gravity center and stability demonstrator according to an embodiment of the utility model.
Reference numerals:
1. a horizontal rotation shaft; 2. a first bearing seat; 201. a first bearing; 202. a first notch; 3. a second bearing seat; 301. a second bearing; 302. a second notch; 4. a screw; 5. a mounting channel; 6. a second adjustable weight; 7. a demonstration boat; 701. a counterweight structure.
Detailed Description
Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
The gravity center and stability demonstration teaching aid of the embodiment of the utility model is described below with reference to fig. 1 to 3.
The gravity center and stability demonstration teaching aid comprises a horizontal rotating shaft, two supporting seats and a demonstrator arranged on the horizontal rotating shaft.
The lower part of the demonstrator is provided with a counterweight structure so that the gravity center of the demonstration boat is positioned below the rotating shaft.
Optionally, the counterweight structure and the demonstrator can be split structures, and the counterweight structure can be connected with the demonstrator through an adhesive, so that the counterweight structure is convenient to manufacture.
It can be appreciated that the counterweight structure and the demonstrator can be an integral structure, and the specific arrangement form can be determined according to actual requirements. The two supporting seats are arranged at intervals in the length direction of the horizontal rotating shaft, and two ends of the horizontal rotating shaft in the length direction are respectively connected with the supporting seats in a rotating mode.
The portion of the presenter above the horizontal axis of rotation is provided with a mounting channel extending through the presenter in a first direction,
it can be understood that the first direction is perpendicular to the horizontal rotation axis and the up-down direction.
The screw rod is arranged in the installation channel, extends in the vertical direction and is fixedly connected with the demonstrator, and the straight line where the axis of the screw rod is located is intersected with the straight line where the axis of the horizontal rotating shaft is located, so that the gravity center position of the demonstrator always moves on the straight line where the axis of the screw rod is located.
The screw is provided with a counterweight adjusting block, and the counterweight adjusting block is connected with the screw through threads so that the counterweight adjusting block moves in the length direction of the screw.
Alternatively, the weight adjusting block may be plural.
Alternatively, the screw may be provided as a removable structure within the mounting channel to facilitate increasing and decreasing the number of weight adjustment blocks.
According to the gravity center and stability demonstration teaching aid, the gravity center of the demonstrator can be adjusted by arranging the counterweight adjusting block, and further, the relationship between the gravity center and the stability of the demonstration ship can be demonstrated.
According to the gravity center and stability demonstration teaching aid, the counterweight structure is arranged at the lower part of the demonstrator, so that the gravity center of the demonstrator is always below the horizontal rotation shaft, and the demonstrator can be in an upright state.
Simultaneously through set up the screw rod and arrange on the screw rod and pass through threaded connection's counter weight regulating block with the screw rod in demonstration ship's part that is located horizontal rotation axis top, from this, can be through rotatory counter weight regulating block for the counter weight regulating block can remove in the length direction of screw rod, and then can be to the position that the demonstration gravity center was located in upper and lower direction.
It will be appreciated that the position of the weight adjustment block on the screw can be adjusted such that the center of gravity of the presenter is located on the horizontal rotational axis.
It can also be appreciated that when the center of gravity of the presenter is located on the horizontal axis of rotation, the force applied to the horizontal axis of rotation will cause the horizontal axis of rotation to rotate the presenter about the axis of the horizontal axis of rotation, and the position at which the presenter is stopped will include at least two possibilities, one in which the weight structure of the presenter is located above the horizontal axis of rotation and the other in which the weight structure of the presenter is located below the horizontal axis of rotation.
At this time, it may be determined that the position of the weight adjusting block on the screw is a position that enables the center of gravity of the presenter to be located on the horizontal rotational axis.
After the gravity center of the demonstrator is adjusted to the horizontal rotation axis, the weight balance structure of the demonstration ship is positioned below the horizontal rotation axis, and the weight balance adjusting block is positioned below the horizontal rotation axis.
The relationship between the center of gravity and the stability will be described by taking a demonstrator as an example of a demonstration ship.
Firstly, the counterweight adjusting block is rotated, so that the counterweight adjusting block moves upwards, the gravity center of the demonstration ship moves to the upper part of the horizontal rotating shaft from the axis of the horizontal rotating shaft, and at the moment, the demonstration ship turns downwards under the influence of the gravity center position, and the demonstration ship is in an inverted state.
And secondly, rotating the counterweight adjusting block to enable the counterweight adjusting block to move downwards, so that the gravity center of the demonstration ship moves to the lower part of the horizontal rotating shaft from the axis of the horizontal rotating shaft, and the demonstration ship rotates the horizontal rotating shaft under the influence of the gravity center position at the moment, and the stopped state of the demonstration ship is the state that the gravity center of the demonstration ship is positioned below the horizontal rotating shaft, namely, the demonstration ship is in an upright state.
Therefore, the weight adjusting block moves up and down in the axial direction of the screw rod through rotating the weight adjusting block, so that the gravity center position of the demonstration ship is adjusted, when the gravity center of the demonstration ship is located above the horizontal rotating shaft, the horizontal rotating shaft is rotated anyway to drive the demonstration ship to rotate, and the stop state of the demonstration ship is an inverted state.
When the gravity center of the demonstration boat is positioned below the horizontal rotating shaft, the demonstration boat is driven to rotate by rotating the horizontal rotating shaft anyway, and the stopped state of the demonstration boat is in an upright state.
Therefore, the gravity center position of the demonstration ship can be adjusted by adjusting the position of the counterweight adjusting block, and then the relationship between the gravity center and the stability can be demonstrated. So that students can fully understand the relationship between the gravity center and the stability.
In some embodiments, the weight adjustment block is a metal nut.
In some embodiments, the weight structure of the presenter includes a plurality of metal blocks.
In some embodiments, the plurality of metal pieces is at least one of an iron piece, a copper piece, and an aluminum piece.
In some embodiments, the two supporting seats are a first bearing seat and a second bearing seat respectively, the first bearing seat and the second bearing seat are arranged at intervals in the length direction of the rotating shaft, and the positions of the corresponding first bearing seat and second bearing seat on the horizontal rotating shaft are provided with a first bearing and a second bearing respectively;
in some embodiments, the upper end of the first bearing housing has a first mounting notch for mounting the first bearing.
In some embodiments, the upper end of the first bearing seat has a second mounting notch for mounting the second bearing
Through setting up first installation breach and second installation breach, be convenient for be fixed in first bearing frame and second bearing frame with horizontal rotation axis.
In another embodiment, as shown in fig. 4, a part of the mounting channels are arranged above the straight line where the axis of the horizontal rotation shaft is located, and another part of the mounting channels are arranged below the straight line where the axis of the horizontal rotation shaft is located.
In order to adapt to the structure of the installation channel, the horizontal rotating shaft can be arranged as two shaft bodies which are respectively connected with the demonstrators on two sides of the installation channel, and the two shaft bodies are collinear.
The screw rod is detachably arranged in the installation channel and extends in the up-down direction.
The weight adjusting blocks can be arranged in a plurality of ways, so that finer adjustment of the gravity center position of the demonstrator is facilitated.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a 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 at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.
Claims (6)
1. Center of gravity and stability demonstration teaching aid, characterized by, include:
the horizontal rotating shaft is provided with a demonstrator, and the lower part of the demonstrator is provided with a counterweight structure so that the gravity center of the demonstrator is positioned below the rotating shaft;
the two support seats are arranged at intervals in the length direction of the horizontal rotating shaft, and two ends of the horizontal rotating shaft in the length direction are respectively connected with the support seats in a rotating manner;
the part of the demonstrator above the horizontal rotating shaft is provided with a mounting channel penetrating through the demonstrator along a first direction,
a screw rod is arranged in the installation channel, the screw rod extends in the up-down direction and is fixedly connected with the demonstrator, a straight line where the axis of the screw rod is positioned intersects with a straight line where the axis of the rotating shaft is positioned,
the screw is provided with a counterweight adjusting block, and the counterweight adjusting block is connected with the screw through threads so that the counterweight adjusting block moves in the length direction of the screw.
2. The gravity center and stability demonstration teaching aid of claim 1, wherein the weight adjusting block is a metal nut.
3. The gravity center and stability demonstration teaching aid of claim 1, wherein the weight structure of the demonstrator comprises a plurality of metal blocks.
4. A gravity center and stability demonstration teaching aid according to claim 3 and characterized in that a plurality of said metal blocks are at least one of iron, copper and aluminum blocks.
5. The gravity center and stability demonstration teaching aid according to claim 1, wherein the two supporting seats are a first bearing seat and a second bearing seat respectively, the first bearing seat and the second bearing seat are arranged at intervals in the length direction of the rotating shaft, and the positions of the first bearing seat and the second bearing seat corresponding to each other on the horizontal rotating shaft are provided with a first bearing and a second bearing respectively.
6. The gravity center and stability demonstration teaching aid according to claim 5, wherein the upper end of the first bearing seat is provided with a first mounting notch for mounting the first bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321224012.3U CN220041249U (en) | 2023-05-19 | 2023-05-19 | Gravity center and stability demonstration teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321224012.3U CN220041249U (en) | 2023-05-19 | 2023-05-19 | Gravity center and stability demonstration teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220041249U true CN220041249U (en) | 2023-11-17 |
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ID=88743851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321224012.3U Active CN220041249U (en) | 2023-05-19 | 2023-05-19 | Gravity center and stability demonstration teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220041249U (en) |
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2023
- 2023-05-19 CN CN202321224012.3U patent/CN220041249U/en active Active
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