CN207833741U - A kind of centripetal force experimental provision - Google Patents
A kind of centripetal force experimental provision Download PDFInfo
- Publication number
- CN207833741U CN207833741U CN201720861874.5U CN201720861874U CN207833741U CN 207833741 U CN207833741 U CN 207833741U CN 201720861874 U CN201720861874 U CN 201720861874U CN 207833741 U CN207833741 U CN 207833741U
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- spiral arm
- holder
- bar
- shaft
- counterweight
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Abstract
A kind of centripetal force experimental provision, including pedestal, upright bar, holder and spiral arm are provided with upright bar on the pedestal, it is provided with holder in the upright bar, shaft is provided on the holder, the spiral arm is connected with holder by shaft, and strain gauge is provided on the spiral arm, counterweight fixed link and trim bar, the strain gauge is located at spiral arm centre position, and counterweight is provided in the counterweight fixed link, bar magnet is provided on the holder, corresponding bar magnet, the spiral arm bottom is provided with Hall element.The utility model is by being arranged bar magnet and corresponding Hall element, and to measure the angular velocity omega of spiral arm, the utility model has the characteristics that simple in structure, easy to carry, measurement is accurate, with long service life.
Description
Technical field
The utility model belongs to teaching experiment instrument field, more particularly to a kind of centripetal force experimental provision.
Background technology
Chinese utility model patent CN201220020025.4 discloses Wireless centrifugal force tester, a kind of Wireless centrifugal force
Tester, including pedestal, column, swivel, the arm that is in the light, spiral arm, strain gauge, counterweight fixed link, trim bar, spiral arm rotation dress
It sets, bracket and microcontroller；Column is mounted on the base, and bracket is mounted on by swivel on column；It is equipped with and turns on bracket
Axis and spiral arm tumbler, spiral arm are mounted in shaft, and shaft is connect with spiral arm tumbler；Be equipped on spiral arm strain gauge,
The axis of counterweight fixed link and trim bar, counterweight fixed link and trim bar on the same line, counterweight fixed link and trim bar
One end is connect with the both sides of strain gauge respectively；The arm that is in the light is installed, the arm that is in the light is equipped with light barrier on bracket；It is also set up on spiral arm
There are the power sensing circuit for measuring centripetal force, the photogate and microcontroller for measuring the time of being in the light, power sensing circuit and photoelectric door
Circuit is connect with microcontroller, and wireless transmitter is connected on microcontroller.The tester structure has the following defects, and first, support
Frame makes entire exerciser tend to be complicated, while increasing cost of manufacture, and occupy larger area cause it is inconvenient to carry；Second gear
Mating plate is arranged in the end for being in the light arm, in use, since the weight of counterweight fixed link is more than trim bar so that spiral arm is sent out
It is raw to tilt, since torque is larger, the error amount for the time that power sensing circuit measures largely is increased, it is wireless to influence
The accuracy of centripetal force experimental tool.
Utility model content
The utility model discloses it is a kind of it is simple in structure, easy to carry, measure centripetal force experiment accurate, with long service life
Device.
In order to achieve the above objectives, specific embodiment of the present utility model is as follows：
A kind of centripetal force experimental provision, including pedestal, upright bar, holder and spiral arm, it is characterised in that：It is arranged on the pedestal
There is upright bar, holder is provided in the upright bar, shaft is provided on the holder, the spiral arm is connected with holder by shaft,
Strain gauge, counterweight fixed link and trim bar are provided on the spiral arm, the strain gauge is located at spiral arm centre position, the counterweight
It is provided with counterweight in fixed link, bar magnet is provided on the holder, corresponding bar magnet, the spiral arm bottom is provided with Hall element.
Also set up on the spiral arm power sensing circuit, measurement Hall element rotating speed hall sensor and microcontroller, power
Sensing circuit and hall sensor are connect with microcontroller, and wireless transmitter is connected on microcontroller.Wireless transmitter passes through nothing
Line mode is connect with wireless receiver, and wireless receiver is connected to computer.
Of length no more than 15cm apart from spindle central.
The pedestal is triangle base.It is additionally provided with motor on the pedestal, driving shaft, institute are connected on the motor
It states and is provided with belt on driving shaft, the driving shaft is connected with shaft by belt.
The utility model is by being arranged bar magnet 31 and corresponding Hall element, to measure the angular velocity omega of spiral arm 4, this hair
It is bright to have the characteristics that simple in structure, easy to carry, measurement is accurate, with long service life.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the front view of the utility model；
Fig. 3 is the structural schematic diagram of the utility model embodiment 2；
Fig. 4 is the front view of the utility model embodiment 2；
Label declaration
Pedestal 1, upright bar 2, holder 3, bar magnet 31, spiral arm 4, strain gauge 41, counterweight fixed link 42, counterweight 43, trim
Bar 44.
Specific implementation mode
Embodiment 1
A kind of centripetal force experimental provision, including pedestal 1, upright bar 2, holder 3 and spiral arm 4, the pedestal 1 are preferably triangle
Pedestal is provided with upright bar 2, holder 3 is provided in the upright bar 2 to keep the sufficiently stable of experimental provision on the pedestal 1,
Shaft 34 is provided on the holder 3, the spiral arm 4 and holder 3 are connected by shaft 34, and the spiral arm 4 can be in shaft 34
It is rotated under drive（It is moved in a circle centered on shaft 34）, the holder 3 is fixed, is provided on the spiral arm 4
Strain gauge 41, counterweight fixed link 42 and trim bar 44, the strain gauge 41 are located at 4 centre position of spiral arm, and the counterweight is solid
Counterweight 43 is provided in fixed pole 42, the counterweight 43 can be fixed in counterweight fixed link 42 by clamping screw.The trim
The effect of bar 44 be with 42 trim of counterweight fixed link, and with 42 homogeneity of counterweight fixed link.It is provided with bar magnet on the holder 3
31, corresponding bar magnet 31,4 bottom of the spiral arm is provided with Hall element（It does not make a check mark in figure）.Concrete operations be bar magnet 31 away from
Length from spindle central is equal to the length of spindle central with a distance from Hall element, and the Hall element is for measuring 31 turns of bar magnet
Speed.
Preferably, of length no more than 15cm.It is additionally provided on the spiral arm and measures the power sensing circuit of centripetal force, surveys
Measure the Hall sensor of Hall element rotating speed.Power sensing circuit and Hall sensor are connect with microcontroller, are connected on microcontroller
There is wireless transmitter.Wireless transmitter is wirelessly connect with wireless receiver, and wireless receiver is connected to computer.
Embodiment 2
Other are as described in Example 1, difference lies in：It is additionally provided with motor 5 on the pedestal 1, is connected on the motor 5
Driving shaft 51 is provided with belt 52 on the driving shaft 51, and the driving shaft 51 and shaft 34 are connected by belt 52, while electricity
Machine 5 drives driving shaft 51 to rotate, and driving shaft 51 drives belt 52 to rotate, at this point, shaft 34 rotates under the drive of belt 52, from
And spiral arm 4 is driven to move in a circle.
The utility model is by being arranged bar magnet 31 and corresponding Hall element, to measure the angular velocity omega of spiral arm 4, this hair
It is bright to have the characteristics that simple in structure, easy to carry, measurement is accurate, with long service life.
Above specific implementation mode is only the preferred embodiment of this creation, all in this wound not to limit this creation
Any modification, equivalent substitution, improvement and etc. done within the spirit and principle of work, should be included in this creation protection domain it
It is interior.
Claims (4)
1. a kind of centripetal force experimental provision, including pedestal, upright bar, holder and spiral arm, it is characterised in that：It is provided on the pedestal
Upright bar is provided with holder in the upright bar, shaft is provided on the holder, the spiral arm is connected with holder by shaft, institute
It states and is provided with strain gauge on spiral arm, counterweight fixed link and trim bar, the strain gauge are located at spiral arm centre position, and the counterweight is solid
It is provided with counterweight in fixed pole, bar magnet is provided on the holder, corresponding bar magnet, the spiral arm bottom is provided with Hall element.
2. a kind of centripetal force experimental provision according to claim 1, it is characterised in that：Power sensing is also set up on the spiral arm
Circuit, measurement Hall element rotating speed hall sensor and microcontroller, power sensing circuit and hall sensor are and microcontroller
It connects, wireless transmitter is connected on microcontroller.
3. a kind of centripetal force experimental provision according to claim 1, it is characterised in that：The pedestal is triangle base.
4. a kind of centripetal force experimental provision according to claim 1, it is characterised in that：It is additionally provided with electricity on the pedestal
Machine is connected with driving shaft on the motor, belt is provided on the driving shaft, the driving shaft and shaft are connected by belt
It connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720861874.5U CN207833741U (en) | 2017-07-17 | 2017-07-17 | A kind of centripetal force experimental provision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720861874.5U CN207833741U (en) | 2017-07-17 | 2017-07-17 | A kind of centripetal force experimental provision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207833741U true CN207833741U (en) | 2018-09-07 |
Family
ID=63384786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720861874.5U Active CN207833741U (en) | 2017-07-17 | 2017-07-17 | A kind of centripetal force experimental provision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207833741U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117491167A (en) * | 2023-11-03 | 2024-02-02 | 中国电建集团河南电力器材有限公司 | Spacer centripetal force test detection equipment and application method |
-
2017
- 2017-07-17 CN CN201720861874.5U patent/CN207833741U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117491167A (en) * | 2023-11-03 | 2024-02-02 | 中国电建集团河南电力器材有限公司 | Spacer centripetal force test detection equipment and application method |
| CN117491167B (en) * | 2023-11-03 | 2024-04-30 | 中国电建集团河南电力器材有限公司 | Spacer centripetal force test detection equipment and application method |
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