CN209070804U - A kind of physics teaching centrifugal force demonstration device - Google Patents
A kind of physics teaching centrifugal force demonstration device Download PDFInfo
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- CN209070804U CN209070804U CN201820951121.8U CN201820951121U CN209070804U CN 209070804 U CN209070804 U CN 209070804U CN 201820951121 U CN201820951121 U CN 201820951121U CN 209070804 U CN209070804 U CN 209070804U
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- centrifugal force
- synchronous case
- synchronous
- variable
- movable axis
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Abstract
The utility model discloses a kind of physics teaching centrifugal force demonstration devices, including movable axis, synchronous case and demonstration box, the inside of the demonstration box is fixed with variable-speed motor by bolt thread, there is synchronous shaft in the top of the variable-speed motor by output shaft switching, the top of the shaft is welded with synchronous case, the side of the synchronous case is vertically welded with guide sleeve, and the internal activity switching of synchronous case has movable axis, the top of the movable axis is fixed to be embedded with turning handle, and the appearance wall activity of movable axis is wound with nylon wire, the nylon wire sequentially passes through synchronous case and guide sleeve, and the end bolt of nylon wire has counterweight；The centrifugal force demonstration device of the utility model is moved in a circle by the counterweight that the motor of adjustable speed drives quality certain, since the revolving speed that counterweight is subject to becomes larger, centrifugal force becomes larger, so that with the movement far from synchronous case is reformed, therefore it can change the length of nylon wire, to quickly and effectively demonstrate out the effect of centrifugal force, meet teaching demand.
Description
Technical field
The present invention relates to the technical field of physics teaching, specially a kind of physics teaching centrifugal force demonstration device.
Background technique
Centrifugal force (centrifugal force) is a kind of fictitious force or inertia force, it makes the object of rotation far from it
Rotation center.Under usual context, centrifugal force is not the power of necessary being.Its effect is intended merely in rotating reference frame
Under (non inertial reference frame), Newton's laws of motion are still able to use.It is not no inertia force under inertial reference system, non-used
(such as rotating reference frame) just needs inertia force under property referential, and otherwise Newton's laws of motion cannot use.In Newtonian mechanics,
Centrifugal force once be used to state two different concepts: the inertia force observed under a non inertial reference frame, and to
The reaction force of mental and physical efforts.Under Lagrangian mechanics, centrifugal force is used to describe the generalized force under some generalized coordinates sometimes,
Centrifugal force plays an important role as an important knowledge in teaching of senior high school course, but existing centrifugal force teaching demonstration exists
Come with some shortcomings place in use process.
Centrifugal force in existing physics teaching is only theoretically educated, and cannot show centrifugal force by experiment, and is showed
In some physical teaching courses, being centrifuged force demonstration apparatus, structure is complicated, operating difficulties, simple and quick cannot show to student
Centrifugal force out is not able to satisfy teaching demand.
Summary of the invention
The purpose of the present invention is to provide a kind of physics teaching centrifugal force demonstration devices, to solve to mention in above-mentioned background technique
Out the problem of.
To achieve the above object, the invention provides the following technical scheme: a kind of physics teaching centrifugal force demonstration device, including
The inside of movable axis, synchronous case and demonstration box, the demonstration box is fixed with variable-speed motor, the speed change electricity by bolt thread
There is synchronous shaft in the top of motivation by output shaft switching, and the top of the shaft is welded with synchronous case, the synchronous case
Side is vertically welded with guide sleeve, and the internal activity switching of synchronous case has movable axis, and the top fixation of the movable axis is embedded with
Turning handle, and the appearance wall activity of movable axis is wound with nylon wire, the nylon wire sequentially passes through synchronous case and guide sleeve, and nylon
The end bolt of line has counterweight.
Preferably, the variable-speed motor wireless signal is connected with the remote controler to match, and variable-speed motor and outside
Power supply is electrically connected.
Preferably, the turning handle switching is on the top of synchronous case.
Preferably, the shaft is fixedly connected by shaft coupling with the output shaft of variable-speed motor.
Preferably, the top of the synchronous case offers slot, and activity is inserted with bolt at the center of the slot, described to insert
Pin activity is inserted at turning handle center.
Compared with prior art, the beneficial effects of the present invention are:
Centrifugal force demonstration device of the invention is moved in a circle by the counterweight that the motor of adjustable speed drives quality certain,
Since the revolving speed that counterweight is subject to becomes larger, centrifugal force becomes larger, so that with the movement far from synchronous case is reformed, therefore nylon wire can be changed
Length meet teaching demand to quickly and effectively demonstrate out the effect of centrifugal force.
Detailed description of the invention
Fig. 1 is overall structure cross-sectional view of the present invention.
In figure: 1- movable axis；11- nylon wire；111- counterweight；12- turning handle；13- scale；2- synchronizes case；21- guide sleeve；
22- bolt；3- shaft；4- demonstration box；41- variable-speed motor；5- bolt.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, the present invention provides a kind of technical solution: a kind of physics teaching centrifugal force demonstration device, including activity
Axis 1, synchronous case 2 and demonstration box 4 are it is characterized by: the inside of the demonstration box 4 is fixed with variable-speed motor by bolt thread
41, there is synchronous shaft 3 in the top of the variable-speed motor 41 by output shaft switching, and the top of the shaft 3 is welded with together
Case 2 is walked, the side of the synchronous case 2 is vertically welded with guide sleeve 21, and the internal activity switching of synchronous case 2 has movable axis 1, institute
The top for stating movable axis 1 is fixed embedded with turning handle 12, and the appearance wall activity of movable axis 1 is wound with nylon wire 11, the nylon wire
11 sequentially pass through synchronous case 2 and guide sleeve 21, and the end bolt of nylon wire 11 has counterweight 111.
41 wireless signal of variable-speed motor is connected with the remote controler to match, can be changed according to Physical Experiment demand
The output revolving speed of variable-speed motor 41, and variable-speed motor 41 and external power supply are electrically connected, the switching of turning handle 12 is in synchronization
The top of case 2, the shaft 3 is fixedly connected by shaft coupling with the output shaft of variable-speed motor 41, after experiment, rotation
Turning handle 12 withdraws nylon wire 11 inside synchronous case 2, provides convenient condition, the top of the synchronous case 2 for experiment again
Slot 22 is offered, activity is inserted with bolt 5 at the center of the slot 22, and 5 activity of bolt is inserted at 12 center of turning handle, can
To fix the position of turning handle 12.
Working principle: counterweight is pulled out certain length by physics teaching centrifugal force demonstration device of the invention, when use, and
The length dimension on nylon wire 11 is recorded, is then electrically connected variable-speed motor 41 and external power supply, at this point, in shaft 3
Drive under so that counterweight 111 moves in a circle, recycle the remote controler to match with variable-speed motor 41 to be gradually increased speed change
The revolving speed of motor 41, synchronous case 2 drives counterweight 111 to rotate by nylon wire 11, since the revolving speed of variable-speed motor 41 is not
Disconnected increase, the centrifugal force being subject to when counterweight 111 rotates at this time becomes larger, and pulls out the nylon wire 11 of certain length, and one section
It after time, stops rotating, the tensile elongation of nylon wire 11 is observed, so as to quickly clearly find out counterweight 111 when rotated
The centrifugal force being subject to, meets teaching demand.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of physics teaching centrifugal force demonstration device, including movable axis (1), synchronous case (2) and demonstration box (4), feature exists
In: the inside of the demonstration box (4) is fixed with variable-speed motor (41) by bolt thread, the variable-speed motor (41) it is upper
Side has synchronous shaft (3) by output shaft switching, and the top of the shaft (3) is welded with synchronous case (2), the synchronous case
(2) side is vertically welded with guide sleeve (21), and the internal activity switching of synchronous case (2) has movable axis (1), the movable axis
(1) top is fixed to be embedded with turning handle (12), and the appearance wall activity of movable axis (1) is wound with nylon wire (11), the nylon wire
(11) synchronous case (2) and guide sleeve (21) are sequentially passed through, and the end bolt of nylon wire (11) there are counterweight (111).
2. a kind of physics teaching centrifugal force demonstration device according to claim 1, it is characterised in that: the variable-speed motor
(41) wireless signal is connected with the remote controler to match, and variable-speed motor (41) and external power supply are electrically connected.
3. a kind of physics teaching centrifugal force demonstration device according to claim 1, it is characterised in that: the turning handle (12) turns
Connect the top in synchronous case (2).
4. a kind of physics teaching centrifugal force demonstration device according to claim 1, it is characterised in that: the shaft (3) is logical
Shaft coupling is crossed to be fixedly connected with the output shaft of variable-speed motor (41).
5. a kind of physics teaching centrifugal force demonstration device according to claim 1, it is characterised in that: the synchronous case (2)
Top offer slot (22), activity is inserted with bolt (5) at the center of the slot (22), and bolt (5) activity is inserted in
At turning handle (12) center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820951121.8U CN209070804U (en) | 2018-06-20 | 2018-06-20 | A kind of physics teaching centrifugal force demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820951121.8U CN209070804U (en) | 2018-06-20 | 2018-06-20 | A kind of physics teaching centrifugal force demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209070804U true CN209070804U (en) | 2019-07-05 |
Family
ID=67088994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820951121.8U Expired - Fee Related CN209070804U (en) | 2018-06-20 | 2018-06-20 | A kind of physics teaching centrifugal force demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209070804U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108648570A (en) * | 2018-06-20 | 2018-10-12 | 南京方易日辰电子科技有限公司 | A kind of physics teaching centrifugal force demonstration device |
| RU2800901C1 (en) * | 2022-09-22 | 2023-07-31 | Анна Алексеевна Екимовская | Training unit for demonstration of the tension force of a rotating chain |
-
2018
- 2018-06-20 CN CN201820951121.8U patent/CN209070804U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108648570A (en) * | 2018-06-20 | 2018-10-12 | 南京方易日辰电子科技有限公司 | A kind of physics teaching centrifugal force demonstration device |
| RU2800901C1 (en) * | 2022-09-22 | 2023-07-31 | Анна Алексеевна Екимовская | Training unit for demonstration of the tension force of a rotating chain |
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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: 20200628 Address after: No.1, Huaguan Road, Tangjiawan Town, high tech Zone, Zhuhai City, Guangdong Province Patentee after: Zhuhai Huashi Medical Technology Holding Co., Ltd Address before: 325000 Hetian Village, Oubei Street, Yongjia County, Wenzhou City, Zhejiang Province Patentee before: Yongjia Zhiyun Technology Co.,Ltd. |
|
| 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: 20190705 Termination date: 20200620 |