CN211181335U - Angular momentum conservation teaching demonstration teaching aid - Google Patents
Angular momentum conservation teaching demonstration teaching aid Download PDFInfo
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- CN211181335U CN211181335U CN202020193716.9U CN202020193716U CN211181335U CN 211181335 U CN211181335 U CN 211181335U CN 202020193716 U CN202020193716 U CN 202020193716U CN 211181335 U CN211181335 U CN 211181335U
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- angular momentum
- rotating shaft
- conservation
- rotating
- teaching aid
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Abstract
The utility model provides a teaching demonstration teaching aid for conservation of angular momentum. The angular momentum conservation teaching demonstration teaching aid comprises a supporting seat; the rotating seat is fixedly arranged at the top of the supporting seat; the rotating shaft is rotatably arranged on the rotating seat; the connecting block is fixedly sleeved on the rotating shaft; the angle adjusting mechanism is arranged on the rotating shaft; the four horizontal adjusting mechanisms are arranged on the supporting seat and are distributed in an array; the top disc is fixedly arranged at the top end of the rotating shaft; and the rotating speed sensor is fixedly arranged at the top of the top disc. The utility model provides a conservation of angular momentum teaching demonstration teaching aid has the experiment convenience, can comparatively audio-visual show conservation of angular momentum experiment, and can carry out the leveling, improves the advantage of experiment precision.
Description
Technical Field
The utility model relates to a physics technical field especially relates to a conservation of angular momentum teaching demonstration teaching aid.
Background
The law of conservation of angular momentum is one of the general laws of physics, reflecting the general laws of movement of particles and particle systems around a point or an axis; reflecting the general law that a mass point and a mass point always have zero resultant moment to a certain point (or fixed axis) without the action of external force or with external forces, move around the point (or axis), the law of conservation of angular momentum is that for a mass point, the law of conservation of angular momentum can be expressed as the derivative of angular momentum of the mass point to a fixed point to time, which is equal to the moment to the point of the force acting on the mass point.
However, conventional experiments are as follows: the rogowski stool needs the cooperation of two persons, and the data is not intuitive enough, so the experiment is inconvenient.
Therefore, it is necessary to provide a new teaching aid for teaching and demonstrating conservation of angular momentum to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem provide a conservation of angular momentum teaching demonstration teaching aid with it is convenient to have the experiment, can comparatively audio-visual show conservation of angular momentum experiment, and can carry out the level (l) ing, improves the experiment precision.
In order to solve the technical problem, the utility model provides a conservation of angular momentum teaching demonstration teaching aid includes: a supporting seat; the rotating seat is fixedly arranged at the top of the supporting seat; the rotating shaft is rotatably arranged on the rotating seat; the connecting block is fixedly sleeved on the rotating shaft; the angle adjusting mechanism is arranged on the rotating shaft; the four horizontal adjusting mechanisms are arranged on the supporting seat and are distributed in an array; the top disc is fixedly arranged at the top end of the rotating shaft; the rotating speed sensor is fixedly arranged on the top of the top disc; the protective cover is fixedly arranged at the top of the supporting seat, and the rotating shaft is rotatably connected with the protective cover; and the horizontal bubble instrument is fixedly arranged at the top of the supporting seat.
Preferably, angle adjustment mechanism includes two first hinge bars, two metal balls, two second hinge bars, middle seat, backup pad, push rod motor and balancing weight, two first hinge bar symmetry is rotated and is installed on the connecting block, two metal balls fixed mounting respectively is two on the hinge bar, and two the metal ball symmetry sets up, two the second hinge bar is articulated respectively and is installed two on the first hinge bar, the middle seat articulates two the bottom of second hinge bar, the fixed cover of backup pad is established in the pivot, the push rod motor with the equal fixed mounting of balancing weight is in the top of backup pad, just the output shaft of push rod motor with the bottom fixed connection of middle seat.
Preferably, the horizontal adjusting mechanism comprises a threaded rod, a non-slip pad and a spherical handle, the threaded rod is installed on the supporting seat in a threaded manner, the non-slip pad is fixedly installed at the bottom end of the threaded rod, and the spherical handle is fixedly installed at the top end of the threaded rod.
Preferably, the top of the rotating seat is provided with a rotating groove, the top of the protective cover is provided with a rotating hole, the rotating shaft is fixedly sleeved with two bearings, and the outer rings of the two bearings are fixedly connected with the inner wall of the rotating groove and the inner wall of the rotating hole respectively.
Preferably, a rotating handle is fixedly mounted on the top disk, and a transparent observation window is arranged on the protection cover.
Preferably, the top of the middle seat is provided with an avoiding hole, and the rotating shaft penetrates through the avoiding hole.
Compared with the prior art, the utility model provides a conservation of angular momentum teaching demonstration teaching aid has following beneficial effect:
the utility model provides a conservation of angular momentum teaching demonstration teaching aid rotates spherical handle, adjusts the levelness, improves the experiment precision, needs the laboratory, measures the rotational speed through speed sensor, starts the push rod motor, and the rotational speed that changes the pivot then can comparatively audio-visual the conservation experimental result of angular momentum, and the experiment is convenient directly perceived.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of the teaching demonstration teaching aid for conservation of angular momentum provided by the utility model;
fig. 2 is a front sectional structural view of fig. 1.
Reference numbers in the figures: 1. supporting seat, 2, the seat that rotates, 3, pivot, 4, connecting block, 5, first articulated rod, 6, metal ball, 7, second articulated rod, 8, middle seat, 9, backup pad, 10, push rod motor, 11, balancing weight, 12, threaded rod, 13, slipmat, 14, top disc, 15, speed sensor, 16, safety cover, 17, horizontal bubble appearance.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and embodiments.
Please refer to fig. 1 and fig. 2 in combination, wherein fig. 1 is a schematic structural diagram of a preferred embodiment of an angular momentum conservation teaching demonstration teaching aid provided by the present invention; fig. 2 is a front sectional structural view of fig. 1. Angular momentum conservation teaching demonstration teaching aid includes: a support base 1; the rotating seat 2 is fixedly arranged at the top of the supporting seat 1; the rotating shaft 3 is rotatably arranged on the rotating seat 2; the connecting block 4 is fixedly sleeved on the rotating shaft 3; the angle adjusting mechanism is arranged on the rotating shaft 3; the four horizontal adjusting mechanisms are arranged on the supporting seat 1 and are distributed in an array; the top disc 14, the said top disc 14 is fixedly mounted on the top of the said spindle 3; the rotating speed sensor 15 is fixedly arranged on the top of the top disc 14; the protective cover 16 is fixedly arranged at the top of the supporting seat 1, and the rotating shaft 3 is rotatably connected with the protective cover 16; and the horizontal bubble instrument 17 is fixedly arranged at the top of the supporting seat 1.
The angle adjusting mechanism comprises two first hinge rods 5, two metal balls 6, two second hinge rods 7, a middle seat 8, a support plate 9, a push rod motor 10 and a balancing weight 11, wherein the first hinge rods 5 are symmetrically and rotatably installed on the connecting block 4, the metal balls 6 are fixedly installed on the two hinge rods 5 respectively, the metal balls 6 are symmetrically arranged and installed on the two second hinge rods 7 are respectively and rotatably installed on the two first hinge rods 5, the middle seat 8 is hinged to the two bottom ends of the second hinge rods 7, the support plate 9 is fixedly sleeved on the rotating shaft 3, the push rod motor 10 and the balancing weight 11 are fixedly installed at the top of the support plate 9, and the output shaft of the push rod motor 10 is fixedly connected with the bottom of the middle seat 8.
Horizontal adjustment mechanism includes threaded rod 12, slipmat 13 and spherical handle, threaded rod 12 threaded mounting on the supporting seat 1, slipmat 13 fixed mounting in the bottom of threaded rod 12, spherical handle fixed mounting in the top of threaded rod 12.
The top of rotating seat 2 has been seted up and has been rotated the groove, the rotation hole has been seted up at the top of safety cover 16, fixed cover is equipped with two bearings on the pivot 3, two the outer lane of bearing respectively in rotate the groove with the inner wall fixed connection who rotates the hole.
A rotating handle is fixedly mounted on the top disc 14, and a transparent observation window is arranged on the protective cover 16, so that the experimental process can be observed conveniently.
The top of middle seat 8 has seted up dodges the hole, pivot 3 runs through dodge the hole.
The utility model provides a theory of operation of angular momentum conservation teaching demonstration teaching aid as follows:
firstly, the device is placed on a desktop to be displayed, then a horizontal bubble instrument 17 is observed whether to be horizontal or not, if not, a spherical handle is rotated, the levelness is adjusted, and the experiment precision is improved;
the power supply is switched on in a laboratory, the rotating handle is driven by external force, such as hands, so that the rotating shaft 3 rotates, the rotating speed is measured by the rotating speed sensor 15 and is displayed by matching with an external display device, the push rod motor 10 is started, the output shaft of the push rod motor 10 is shortened, the middle seat 8 is driven to move downwards, and then the two metal balls 6 are close to the rotating shaft 3, and the rotating speed of the rotating shaft 3 is increased due to the law of angular momentum and is measured by the rotating speed sensor 15;
and then the push rod motor 10 is started to extend and reset the output shaft, so that the rotating speed of the rotating shaft 3 is reduced and restored to the error range of the initial rotating speed, the conservation experiment result of the angular momentum can be visually seen, and the experiment is convenient and visual.
Compared with the prior art, the utility model provides a conservation of angular momentum teaching demonstration teaching aid has following beneficial effect:
the utility model provides a conservation of angular momentum teaching demonstration teaching aid rotates spherical handle, adjusts the levelness, improves the experiment precision, needs the laboratory, measures the rotational speed through speed sensor 15, starts push rod motor 10, and the rotational speed that changes pivot 3 then can be comparatively audio-visual sees out the conservation experimental result of angular momentum, and the experiment is convenient directly perceived.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a conservation of angular momentum teaching demonstration teaching aid which characterized in that includes:
a supporting seat;
the rotating seat is fixedly arranged at the top of the supporting seat;
the rotating shaft is rotatably arranged on the rotating seat;
the connecting block is fixedly sleeved on the rotating shaft;
the angle adjusting mechanism is arranged on the rotating shaft;
the four horizontal adjusting mechanisms are arranged on the supporting seat and are distributed in an array;
the top disc is fixedly arranged at the top end of the rotating shaft;
the rotating speed sensor is fixedly arranged on the top of the top disc;
the protective cover is fixedly arranged at the top of the supporting seat, and the rotating shaft is rotatably connected with the protective cover;
and the horizontal bubble instrument is fixedly arranged at the top of the supporting seat.
2. The angular momentum conservation teaching demonstration teaching aid of claim 1, wherein the angle adjusting mechanism comprises two first hinged rods, two metal balls, two second hinged rods, a middle base, a support plate, a push rod motor and a balancing weight, the two first hinged rods are symmetrically and rotatably installed on the connecting block, the two metal balls are respectively and fixedly installed on the two hinged rods, the two metal balls are symmetrically arranged, the two second hinged rods are respectively and hingedly installed on the two first hinged rods, the middle base is hinged at the bottom ends of the two second hinged rods, the support plate is fixedly sleeved on the rotating shaft, the push rod motor and the balancing weight are fixedly installed at the top of the support plate, and the output shaft of the push rod motor is fixedly connected with the bottom of the middle base.
3. The angular momentum conservation teaching demonstration teaching aid of claim 1, wherein the horizontal adjustment mechanism comprises a threaded rod, a non-slip mat and a spherical handle, the threaded rod is threadedly mounted on the support base, the non-slip mat is fixedly mounted at the bottom end of the threaded rod, and the spherical handle is fixedly mounted at the top end of the threaded rod.
4. The teaching aid for teaching and demonstrating conservation of angular momentum as claimed in claim 1, wherein a rotation groove is formed at the top of said rotation base, a rotation hole is formed at the top of said protection cover, two bearings are fixedly mounted on said rotation shaft, and outer rings of said two bearings are fixedly connected to inner walls of said rotation groove and said rotation hole, respectively.
5. The angular momentum conservation teaching demonstration teaching aid according to claim 1, wherein a rotating handle is fixedly mounted on the top disk, and a transparent observation window is arranged on the protective cover.
6. The angular momentum conservation teaching demonstration teaching aid of claim 2, wherein an avoiding hole is formed in the top of the middle seat, and the rotating shaft penetrates through the avoiding hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020193716.9U CN211181335U (en) | 2020-02-21 | 2020-02-21 | Angular momentum conservation teaching demonstration teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020193716.9U CN211181335U (en) | 2020-02-21 | 2020-02-21 | Angular momentum conservation teaching demonstration teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211181335U true CN211181335U (en) | 2020-08-04 |
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ID=71810237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020193716.9U Expired - Fee Related CN211181335U (en) | 2020-02-21 | 2020-02-21 | Angular momentum conservation teaching demonstration teaching aid |
Country Status (1)
| Country | Link |
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| CN (1) | CN211181335U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763954A (en) * | 2021-02-07 | 2021-05-07 | 郑州大学第一附属医院 | Device for adjusting angular momentum based on bipolar magnet and nuclear magnetic resonance imaging method |
-
2020
- 2020-02-21 CN CN202020193716.9U patent/CN211181335U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763954A (en) * | 2021-02-07 | 2021-05-07 | 郑州大学第一附属医院 | Device for adjusting angular momentum based on bipolar magnet and nuclear magnetic resonance imaging method |
| CN112763954B (en) * | 2021-02-07 | 2021-10-22 | 郑州大学第一附属医院 | Device for adjusting angular momentum based on bipolar magnet and nuclear magnetic resonance imaging method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201130 Address after: 211100 No. 18 Zhilan Road, Jiangning District, Nanjing City, Jiangsu Province (Jiangning High-tech Park) Patentee after: Nanjing ningte New Material Technology Co.,Ltd. Address before: Nanjing City, Jiangsu province 210037 Longpan Road No. 159 Patentee before: NANJING FORESTRY University |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200804 Termination date: 20210221 |