CN208819462U - Centripetal force teaching demonstration device - Google Patents
Centripetal force teaching demonstration device Download PDFInfo
- Publication number
- CN208819462U CN208819462U CN201820235610.3U CN201820235610U CN208819462U CN 208819462 U CN208819462 U CN 208819462U CN 201820235610 U CN201820235610 U CN 201820235610U CN 208819462 U CN208819462 U CN 208819462U
- Authority
- CN
- China
- Prior art keywords
- cross bar
- vertical bar
- bar
- centripetal force
- steel ball
- 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
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- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The utility model relates to a kind of centripetal force teaching demonstration devices, belong to technical field of teaching instruments, including laboratory table, the desktop of laboratory table is equipped with vertical bar, the connection of vertical bar lower end has speed regulating motor, speed regulating motor is fixed by the bracket in desktop lower end, cross bar is equipped with by locking nut on vertical bar, cross bar is equipped with scale, and the right end of cross bar is round polished rod, is cased with steel ball on round polished rod, the left end of cross bar is equipped with fixed pulley, electronic dynamometer is fixed on vertical bar, bolt has lightweight rope on steel ball, and lightweight rope is around fixed pulley bolt on the hook of electronic dynamometer lower end.The utility model can very easily in adjusting centripetal power calculation formula parameters, parameters also facilitate record, more accurate, intuitively to student can demonstrate the knowledge point about centripetal force, improve the learning interest of student, improve learning effect.
Description
Technical field
The utility model relates to a kind of centripetal force teaching demonstration devices, belong to technical field of teaching instruments.
Background technique
In the physics teaching in middle school, it is related to many knowledge points about centripetal force.In the relevant knowledge to centripetal force
During being explained, often simply calculation formula is provided, illustrates centripetal force and each ginseng to student in formula
Physical relationship between number, but such teaching pattern is relatively abstract, student, which understands, to get up relatively difficult, leverages
Raw learning interest.
Utility model content
The purpose of this utility model is to solve that deficiency exists in the prior art, provide it is a kind of it is more accurate, intuitively to
Mental and physical efforts teaching demonstration device, improves the learning interest of student, improves learning effect.
The utility model is achieved through the following technical solutions:
I.e. a kind of centripetal force teaching demonstration device, including laboratory table, the desktop of laboratory table are equipped with vertical bar, vertical bar lower end connection
It is connected to speed regulating motor, speed regulating motor, which is fixed by the bracket on desktop lower end, vertical bar, is equipped with cross bar by locking nut, on cross bar
Equipped with scale, the right end of cross bar is round polished rod, is cased with steel ball on round polished rod, and the left end of cross bar is equipped with fixed pulley, on vertical bar
It is fixed with electronic dynamometer, bolt has lightweight rope, hook of the lightweight rope around fixed pulley bolt in electronic dynamometer lower end on steel ball
On.
The utility model can very easily in adjusting centripetal power calculation formula parameters, parameters also facilitate note
Record more accurately, intuitively can demonstrate the knowledge point about centripetal force to student, improve the learning interest of student, improve
Learning effect.
Further preferably, the lower end of the cross bar is set there are two cableties, also is provided with a cableties on the left side of the vertical bar,
The lightweight rope passes through all cableties and is arranged.Cableties can preferably fix lightweight rope in the utility model rotary course
Firmly, guarantee smoothly completing for experiment.
Further preferably, the right side of the cross bar offers blind screw hole, is equipped with spacer pin on blind screw hole.
Prevent the utility model when rotated, steel ball throws away cross bar and accident occurs.
Compared with prior art, beneficial effect possessed by the utility model is:
1, the parameters that the utility model can very easily in adjusting centripetal power calculation formula, parameters also facilitate
Record more accurately, intuitively can demonstrate the knowledge point about centripetal force to student, improve the learning interest of student, change
It has been apt to learning effect.
2, the lower end of cross bar is set there are two cableties, and a cableties also are provided on the left side of vertical bar, and lightweight rope passes through all
Cableties setting.Cableties can preferably fix lightweight rope in the utility model rotary course, guarantee the smooth complete of experiment
At.
3, the right side of cross bar offers blind screw hole, is equipped with spacer pin on blind screw hole.Prevent this practical new
When rotated, steel ball throws away cross bar and accident occurs type.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the partial enlargement structural representation in Fig. 1 at A；
Fig. 3 is the cross section structure schematic diagram of vertical bar and cross bar.
In figure: 1, laboratory table；2, bracket；3, speed regulating motor；4, vertical bar；5, bearing；6, locking nut；7, cross bar；8, steel
Ball；9, spacer pin；10, lightweight rope；11, cableties；12, electronic dynamometer；13, fixed pulley.
Specific embodiment
Below against attached drawing, specific embodiment of the present utility model is described in further detail.
A kind of centripetal force teaching demonstration device as shown in Figure 1 to Figure 3, including laboratory table 1 are set on the desktop of laboratory table 1
There is vertical bar 4, the connection of 4 lower end of vertical bar has speed regulating motor 3, and speed regulating motor 3 is fixed on desktop lower end by bracket 2, passes through on vertical bar 4
Locking nut 6 is equipped with cross bar 7, and cross bar 7 is equipped with scale, and the right side of cross bar 7 offers blind screw hole, on blind screw hole
Spacer pin 9 is installed, the right end of cross bar 7 is round polished rod, and steel ball 8 is cased on round polished rod, and the left end of cross bar 7 is equipped with fixed pulley
13, electronic dynamometer 12 is fixed on vertical bar 4, and bolt has lightweight rope 10 on steel ball 8, and lightweight rope 10 is around 13 bolt of fixed pulley in electricity
On the hook of sub- 12 lower end of dynamometer.The lower end of cross bar 7 is set there are two cableties 11, also is provided with a cableties on the left side of vertical bar 4
11, lightweight rope 10 passes through all cableties 11 and is arranged.
The course of work:
Speed regulating motor 3 drives vertical bar 4 and cross bar 7 to rotate together, has the display of display revolving speed, steel on speed regulating motor 3
The quality of ball 8 can be weighed and be recorded in advance, and the radius of turn of steel ball 8 can be read on cross bar 7, pass through mobile cross bar 7
It can change radius of turn, replace the steel ball 8 of different quality, the revolving speed of speed regulating motor 3 can be adjusted arbitrarily, such centripetal force meter
All parameters calculated in formula can arbitrarily change, three quality, radius of turn and angular velocity of rotation parameters, limit wherein
Two parameter change another parameters, can verify the relationship of each parameter and centripetal force.
In the description of the present invention, the orientation of the instructions such as term "inner", "outside", "upper", "lower", "top", "bottom" or
Positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model rather than requires this
Utility model must be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
Claims (3)
1. the desktop of a kind of centripetal force teaching demonstration device, including laboratory table (1), laboratory table (1) is equipped with vertical bar (4), vertical bar
(4) lower end connection has speed regulating motor (3), and speed regulating motor (3) is fixed on desktop lower end by bracket (2), it is characterised in that: described
Cross bar (7) are equipped with by locking nut (6) on vertical bar (4), cross bar (7) is equipped with scale, and the right end of cross bar (7) is circular light
Bar is cased with steel ball (8) on round polished rod, and the left end of cross bar (7) is equipped with fixed pulley (13), and vertical bar is fixed with electronic, horological on (4)
Power meter (12), bolt has lightweight rope (10) on steel ball (8), and lightweight rope (10) is around fixed pulley (13) bolt under electronic dynamometer (12)
On the hook at end.
2. centripetal force teaching demonstration device according to claim 1, it is characterised in that: the lower end of the cross bar (7) is equipped with
Two cableties (11), a cableties (11) also is provided on the left side of the vertical bar (4), and the lightweight rope (10) passes through all lines
Detain (11) setting.
3. centripetal force teaching demonstration device according to claim 1, it is characterised in that: the right end of the cross bar (7) opens up
There is blind screw hole, spacer pin (9) are installed on blind screw hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820235610.3U CN208819462U (en) | 2018-02-09 | 2018-02-09 | Centripetal force teaching demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820235610.3U CN208819462U (en) | 2018-02-09 | 2018-02-09 | Centripetal force teaching demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208819462U true CN208819462U (en) | 2019-05-03 |
Family
ID=66267759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820235610.3U Expired - Fee Related CN208819462U (en) | 2018-02-09 | 2018-02-09 | Centripetal force teaching demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208819462U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110349479A (en) * | 2019-06-21 | 2019-10-18 | 黄书畅 | Circular motion instructional device and application method |
-
2018
- 2018-02-09 CN CN201820235610.3U patent/CN208819462U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110349479A (en) * | 2019-06-21 | 2019-10-18 | 黄书畅 | Circular motion instructional device and application method |
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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: 20190503 Termination date: 20200209 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |