CN210039301U - Magnetic adsorption type angular momentum conservation demonstration experiment instrument - Google Patents
Magnetic adsorption type angular momentum conservation demonstration experiment instrument Download PDFInfo
- Publication number
- CN210039301U CN210039301U CN201920363752.2U CN201920363752U CN210039301U CN 210039301 U CN210039301 U CN 210039301U CN 201920363752 U CN201920363752 U CN 201920363752U CN 210039301 U CN210039301 U CN 210039301U
- Authority
- CN
- China
- Prior art keywords
- main shaft
- supporting body
- angular momentum
- adsorption type
- magnetic adsorption
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000002474 experimental method Methods 0.000 title claims abstract description 24
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 18
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 18
- 230000005389 magnetism Effects 0.000 claims description 6
- 230000005294 ferromagnetic effect Effects 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052742 iron Inorganic materials 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Landscapes
- Instructional Devices (AREA)
Abstract
A magnetic adsorption type angular momentum conservation demonstration experiment instrument. The device comprises a chassis, a main shaft supporting seat, a main shaft, a rotating arm supporting body, a fixing ring, a connecting shaft supporting body, a handle, a rotating arm, a connecting shaft and a jacking ball; the utility model discloses the effect: the relation between the rotation radius and the rotation angular velocity, namely the law of conservation of angular momentum, can be qualitatively demonstrated. The whole set of experimental instrument can be adsorbed on a blackboard or any iron plane through a strong iron magnet, so that a plurality of people can watch the instrument conveniently and simultaneously. The instrument has small volume and light weight, and teachers can bring the instrument to any required classroom for lecturing without space limitation. The angular velocity at the time of rotation can be changed by changing the size of the radius of rotation. The chassis and the two jacking balls can be detached, and the mounting is simple and the carrying is convenient.
Description
Technical Field
The utility model belongs to the technical field of the physical teaching demonstration appearance, especially, relate to a magnetism adsorbs formula angular momentum conservation demonstration experiment appearance.
Background
The law of conservation of angular momentum is an important content in the teaching of college physics mechanics: when the rigid body rotates around the fixed axis, if the external torque applied to the rigid body is zero, the angular momentum vector of the rigid body to the fixed axis remains unchanged, i.e. the product of the rotation angle of the rigid body and the moment of inertia of the rigid body is a constant, which is the conservation law of angular momentum of the rigid body. The moment of inertia of a rigid body is related to its radius of rotation and increases with increasing radius. So that the angular velocity of its rotation changes when the radius of rotation changes. Therefore, the change of the angular velocity can be observed through the demonstration instrument, and qualitative demonstration is carried out on the experiment law. Because of the abstraction of angular momentum, it is difficult for students to deeply understand the law of conservation of angular momentum in a classroom only by the explanation of teachers, so it is necessary to perform experimental demonstration in the classroom to improve the teaching effect.
Chinese patent application No. 201820335864.2 discloses an angular momentum conservation law teaching instrument, which has the corresponding disadvantages: during actual demonstration, the demonstration instruments are horizontally arranged and limited in a classroom field, and it cannot be guaranteed that all students in a classroom can clearly observe the demonstration phenomenon. The existing other angular momentum conservation demonstration instruments also have the condition that the operation is not stable, and the demonstration effect is not obvious enough sometimes when the angular speed of a rigid body is changed.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model aims at providing a magnetism adsorbs formula angular momentum conservation demonstration experiment appearance.
In order to achieve the above object, the magnetic adsorption type demonstration experiment instrument for conservation of angular momentum provided by the utility model comprises a chassis, a main shaft supporting seat, a main shaft, a rotating arm supporting body, a fixing ring, a connecting shaft supporting body, a handle, a rotating arm, a connecting shaft and a top ball; the main shaft supporting seat is tubular, and the lower end of the main shaft supporting seat is connected to the middle of the surface of the chassis; the lower end of the main shaft is inserted into and fixed in a hole of the main shaft supporting seat; the rotary arm supporting body is annular and is sleeved on the outer circumferential surface of the upper part of the main shaft supporting seat by utilizing an internal bearing; the fixing ring is sleeved on the main shaft at the upper end of the main shaft supporting seat and used for preventing the rotating arm supporting body from sliding on the main shaft; one ends of the two rotating arms are symmetrically hinged on the rotating arm supporting body, and the other ends of the two rotating arms are respectively connected with a jacking ball; the connecting shaft supporting body is annular and is sleeved on the upper part of the main shaft by using an internal linear bearing; one ends of the two connecting shafts are respectively hinged to the middle parts of the two rotating arms, and the other ends of the two connecting shafts are symmetrically hinged to the connecting shaft supporting body; the handle supporting body is sleeved on the main shaft positioned on the upper side of the connecting shaft supporting body and is connected with the linear bearing in the connecting shaft supporting body through an inner bearing; one ends of the two handles are symmetrically connected to the handle supporting body.
The magnetic adsorption type angular momentum conservation demonstration experiment instrument further comprises four strong ferromagnetic bodies which are uniformly arranged at four corners of the back of the chassis.
The magnetic adsorption type angular momentum conservation demonstration experiment instrument further comprises a top decorative ball which is detachably mounted at the top end of the main shaft.
The chassis is detachably connected with the main shaft supporting seat.
The utility model provides a magnetism adsorbs formula angular momentum conservation demonstration experiment appearance has following beneficial effect:
(1) the relation between the rotation radius and the rotation angular velocity, namely the law of conservation of angular momentum, can be qualitatively demonstrated.
(2) The whole set of experimental instrument can be adsorbed on a blackboard or any iron plane through a strong iron magnet, so that a plurality of people can watch the instrument conveniently and simultaneously.
(3) The instrument has small volume and light weight, and teachers can bring the instrument to any required classroom for lecturing without space limitation.
(4) The angular velocity at the time of rotation can be changed by changing the size of the radius of rotation.
(5) The chassis and the two jacking balls can be detached, and the mounting is simple and the carrying is convenient.
Drawings
Fig. 1 is the utility model provides a magnetism adsorbs formula angular momentum conservation demonstration experiment appearance schematic structure.
Detailed Description
The magnetic adsorption type angular momentum conservation demonstration experiment instrument provided by the utility model is explained in detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 1, the magnetic adsorption type demonstration experiment instrument for conservation of angular momentum provided by the utility model comprises a chassis 1, a main shaft supporting seat 3, a main shaft 4, a rotating arm supporting body 5, a fixing ring 6, a connecting shaft supporting body 7, a handle supporting body 8, a handle 9, a rotating arm 11, a connecting shaft 13 and a top ball 15; the main shaft supporting seat 3 is tubular, and the lower end of the main shaft supporting seat is connected to the middle part of the surface of the chassis 1; the lower end of the main shaft 4 is inserted and fixed in a hole of the main shaft supporting seat (3); the rotary arm support body 5 is annular and is sleeved on the outer circumferential surface of the upper part of the main shaft support seat 3 by utilizing an internal bearing; the fixing ring 6 is sleeved on the main shaft 4 at the upper end of the main shaft supporting seat 3 and is used for preventing the rotating arm supporting body 5 from sliding on the main shaft 4; one ends of the two rotating arms 11 are symmetrically hinged on the rotating arm supporting body 5, and the other ends are respectively connected with a jacking ball 15; the connecting shaft supporting body 7 is annular and is sleeved on the upper part of the main shaft 4 by using an internal linear bearing; one ends of the two connecting shafts 13 are respectively hinged to the middle parts of the two rotating arms 11, and the other ends are symmetrically hinged to the connecting shaft supporting body 7; the handle supporting body 8 is sleeved on the main shaft 4 positioned on the upper side of the connecting shaft supporting body 7 and is connected with a linear bearing inside the connecting shaft supporting body 7 through an internal bearing; one ends of the two handles 9 are symmetrically connected to the handle supporting body 8.
The magnetic adsorption type angular momentum conservation demonstration experiment instrument further comprises four strong ferromagnetic bodies 2 which are uniformly arranged at four corners of the back of the chassis 1.
The magnetic adsorption type angular momentum conservation demonstration experiment instrument further comprises a top decorative ball 10 which is detachably arranged at the top end of the main shaft 4.
The chassis 1 is detachably connected with the main shaft supporting seat 3, so that the carrying is convenient.
Will now the utility model provides a use method of magnetism adsorption type angular momentum conservation demonstrates experiment appearance explains as follows:
when the teacher needs to demonstrate the conservation of angular momentum in a classroom, the whole magnetic adsorption type conservation of angular momentum demonstration experiment instrument can be horizontally placed on a demonstration table by utilizing the chassis 1, or the magnetic strong iron magnet 2 is adsorbed on a blackboard, then any top ball 15 is pushed manually, the rotating arm supporting body 5, the connecting shaft supporting body 7, the rotating arm 11, the connecting shaft 13, the top ball 15, the handle supporting body 8 and the handle 9 rotate around the main shaft 4 together, and then the included angle between the rotating arm 11 and the main shaft 4 can be changed by pushing and pulling the connecting shaft supporting body 7 along the main shaft 4 through the handle 9 and the handle supporting body 8, so that the rotating radius of the top ball 15 is changed, the rotating angular velocity is changed, and the conservation law of angular momentum is qualitatively demonstrated.
Claims (4)
1. The utility model provides a magnetism adsorbs formula angular momentum conservation demonstration experiment appearance which characterized in that: the magnetic adsorption type angular momentum conservation demonstration experiment instrument comprises a chassis (1), a main shaft supporting seat (3), a main shaft (4), a rotating arm supporting body (5), a fixing ring (6), a connecting shaft supporting body (7), a handle supporting body (8), a handle (9), a rotating arm (11), a connecting shaft (13) and a jacking ball (15); the spindle supporting seat (3) is tubular, and the lower end of the spindle supporting seat is connected to the middle of the surface of the chassis (1); the lower end of the main shaft (4) is inserted into and fixed in a hole of the main shaft supporting seat (3); the rotating arm supporting body (5) is annular and is sleeved on the outer circumferential surface of the upper part of the main shaft supporting seat (3) by utilizing an internal bearing; the fixing ring (6) is sleeved on the main shaft (4) positioned at the upper end of the main shaft supporting seat (3) and used for preventing the rotating arm supporting body (5) from sliding on the main shaft (4); one ends of the two rotating arms (11) are symmetrically hinged on the rotating arm supporting body (5), and the other ends are respectively connected with a jacking ball (15); the connecting shaft supporting body (7) is annular, and is sleeved on the upper part of the main shaft (4) by using an internal linear bearing; one ends of the two connecting shafts (13) are respectively hinged to the middle parts of the two rotating arms (11), and the other ends are symmetrically hinged to the connecting shaft supporting body (7); the handle supporting body (8) is sleeved on the main shaft (4) positioned on the upper side of the connecting shaft supporting body (7) and is connected with a linear bearing inside the connecting shaft supporting body (7) through an inner bearing; one ends of the two handles (9) are symmetrically connected to the handle supporting body (8).
2. The magnetic adsorption type angular momentum conservation demonstration experiment instrument according to claim 1, characterized in that: the magnetic adsorption type angular momentum conservation demonstration experiment instrument further comprises four strong ferromagnetic bodies (2) which are uniformly arranged at four corners of the back of the chassis (1).
3. The magnetic adsorption type angular momentum conservation demonstration experiment instrument according to claim 1, characterized in that: the magnetic adsorption type angular momentum conservation demonstration experiment instrument further comprises a top decorative ball (10) which is detachably mounted at the top end of the main shaft (4).
4. The magnetic adsorption type angular momentum conservation demonstration experiment instrument according to claim 1, characterized in that: the chassis (1) is detachably connected with the main shaft supporting seat (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920363752.2U CN210039301U (en) | 2019-03-21 | 2019-03-21 | Magnetic adsorption type angular momentum conservation demonstration experiment instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920363752.2U CN210039301U (en) | 2019-03-21 | 2019-03-21 | Magnetic adsorption type angular momentum conservation demonstration experiment instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210039301U true CN210039301U (en) | 2020-02-07 |
Family
ID=69355840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920363752.2U Expired - Fee Related CN210039301U (en) | 2019-03-21 | 2019-03-21 | Magnetic adsorption type angular momentum conservation demonstration experiment instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210039301U (en) |
-
2019
- 2019-03-21 CN CN201920363752.2U patent/CN210039301U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108591722A (en) | A kind of adjustable education and instruction auxiliary device of double screen | |
| CN112037610A (en) | Display device for music teaching | |
| CN210039301U (en) | Magnetic adsorption type angular momentum conservation demonstration experiment instrument | |
| CN211956831U (en) | Teaching device for education management | |
| CN206849325U (en) | A kind of instructional device for architectural design | |
| CN104318812B (en) | A kind of view projections demonstrator | |
| CN209331605U (en) | The adjustable displaying device of Art Design teaching | |
| CN213241611U (en) | Magnetic adsorption type angular momentum conservation experiment demonstration instrument | |
| CN107993532A (en) | A kind of physics lesson parabola presentation process device | |
| CN206574313U (en) | A kind of English teaching apparatus for demonstrating | |
| CN204955859U (en) | Business administration is with multi -functional drawing instrument | |
| CN107993526A (en) | Mathematical education interaction device is used in one kind teaching | |
| CN208774366U (en) | A kind of elliptical drawing tool for teaching | |
| CN206564076U (en) | Physical experiment device | |
| CN201592605U (en) | Teaching compasses | |
| CN206841031U (en) | A kind of magnetic suspension penholder | |
| CN203405987U (en) | Physical demonstration apparatus | |
| CN203242198U (en) | Multifunctional compass for teaching blackboard | |
| CN203134213U (en) | Centripetal force experimental apparatus | |
| CN201311730Y (en) | Combined teaching tool | |
| CN2850949Y (en) | Compasses for blackboard | |
| CN104008692A (en) | Gear training aid | |
| CN219642406U (en) | Three-dimensional model | |
| CN216733670U (en) | Compasses for teaching | |
| CN109662460A (en) | A kind of mathematical education table that stability is good |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200207 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |