CN207319541U - A kind of pendulum experimental instrument - Google Patents
A kind of pendulum experimental instrument Download PDFInfo
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- CN207319541U CN207319541U CN201720671271.9U CN201720671271U CN207319541U CN 207319541 U CN207319541 U CN 207319541U CN 201720671271 U CN201720671271 U CN 201720671271U CN 207319541 U CN207319541 U CN 207319541U
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- base
- platform
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- support column
- swing ball
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Abstract
The utility model discloses a kind of pendulum experimental instrument, including base and swing ball, quadrate support column is vertically installed with base, the front end face of quadrate support column is provided with graduation mark from top to bottom, mounting base is provided with quadrate support column, swing ball is installed in mounting base by cycloid, feature is that the bottom of base is provided with 4 height adjustment bolts, 4 height adjustment bolts are symmetrically arranged at four edges of base bottom, be provided with base for detect base whether the testing agency of leveling.Advantage is to set 4 height adjustment bolts in the bottom of base, 4 height adjustment bolts are symmetrically arranged at four edges of base bottom, it is used to carry out leveling processing to base by rotating height adjustment bolt, it is used to judge whether leveling is completed by the testing agency being arranged on base, so that the pendulum experimental instrument self leveling of energy in the case of experimental bench operating surface not severity, it is simple in structure, more accurately pendulum length data can be obtained.
Description
Technical field
A kind of instruments used for education are the utility model is related to, more particularly, to a kind of pendulum experimental instrument.
Background technology
It is a basic Physical Experiment using Measurement of Gravity Acceleration by Simple Pendulum, the measurement in pendulum experimental instrument to pendulum length is one
The very crucial work of item, whether its measurement is accurate, directly influences the accuracy of experimental data.Current existing experiment with simple pendulum
Instrument, generally comprises base and the strut for being used to install swing ball being vertically provided on base, the front end face of strut is planar end surface, should
Graduation mark is vertically provided with planar end surface, for reading pendulum length, base is usually fixed, real in order to accurately measure pendulum length
The operating surface of strut and experimental bench is required to keep absolute upright when testing, to the more demanding of experimental bench operating surface, if on experimental bench
Operating surface slightly some out-of-flatnesses, then the experiment instrument being placed on it just has slight inclination, passes through graduation mark at this time
The reading of reading will be less than actual pendulum length, so as to obtain the experimental data of inaccuracy, influence final measurement result.
The content of the invention
Technical problem to be solved in the utility model be to provide it is a kind of it is simple in structure, can obtain more accurately testing
The pendulum experimental instrument of data.
Technical solution is used by the utility model solves above-mentioned technical problem：
A kind of pendulum experimental instrument, including base and swing ball, are vertically installed with quadrate support column on the base, described
The front end face of quadrate support column be provided with graduation mark from top to bottom, be provided with mounting base on the quadrate support column,
The swing ball is installed in the mounting base by cycloid, and the bottom of the base is provided with 4 height adjustment bolts,
Height adjustment bolt described in 4 is symmetrically arranged at four edges of the base bottom, is set on the base
Be equipped with for detect the base whether the testing agency of leveling.
The testing agency is a horizontal bubble instrument, and the top end face of the base is a smooth horizontal ends
Face, the horizontal bubble instrument are arranged on the top end face of the base.Testing agency is horizontal bubble instrument, simple in structure,
Easy to detect, the top end face of the base for installing horizontal bubble instrument is a smooth horizontal end face, it is ensured that leveling detects
Accuracy.
The horizontal bubble instrument includes a closed transparent shell, and liquid is filled with the transparent shell, described
Liquid be machine oil, be additionally provided with a bubble in the transparent shell, the upper surface of the transparent shell it is centrally disposed
There is one to be used to conclude whether the judgement of leveling identifies base, and the judgement is identified as a judgement circle.Above-mentioned horizontal bubble instrument knot
Structure is simple, easy to operate, during leveling, when bubble is entered in judgement circle, that is, represents base leveling, can carry out experimental implementation.
Height adjustment bolt described in 4 is divided into a fixing bolt and three rotation adjusting bolts, the fixation spiral shell
Bolt is fixed at one of edge of the base bottom, the rotation adjusting bolt described in three rotatably arranged with
In the other three edge of the base bottom, the other three edge of the base is respectively arranged with vertical peace
Hole is filled, is provided with internal thread in the mounting hole, the bar portion of the rotation adjusting bolt is provided with and the internal thread
Matched external screw thread, the rotation adjusting bolt are installed in rotation on described by internal thread and externally threaded cooperation
Base bottom.4 height adjustment bolts, one is fixed on base bottom for fixing bolt, and in addition 3 rotation adjusting bolts can turn
Base bottom is arranged on dynamicly, using the plane where fixing bolt as datum level, 3 rotation adjusting bolts is rotated, to base
Level tune is carried out, it is simple in structure, it is easy to operate.
The auxiliary reading mechanism for aiding in reading precision data is provided with the quadrate support column.By in side
Auxiliary reading mechanism is set to be used to aid in reading pendulum length data on shape support post, so that more accurately pendulum length value is obtained, into
And obtain accurate experimental data.
The auxiliary reading mechanism includes an auxiliary that can be arranged on to up and down adjustment on the quadrate support column
Reading platform, the auxiliary reading platform are arranged on the lower section of the mounting base, vertical on the auxiliary reading platform
A plane mirror is provided with, after the plane mirror is arranged on the front end face of the quadrate support column and the plane mirror
End face and the front end face of the quadrate support column are affixed, and it is equal with horizontal plane that the front end face of the plane mirror is provided with one
The first capable graticule, two side end faces of the plane mirror are respectively arranged with second graticule parallel with horizontal plane, described
Front end of the both ends respectively with the second graticule described in two of the first graticule be connected, the outer surface of the swing ball is set
There is a benchmark loop line, the barycenter of the benchmark loop line and the swing ball is in same level, the scale
One end of line is located at the rear of the plane mirror.Above-mentioned auxiliary reading mechanism is simple in structure, easy to operate, and when use adjusts auxiliary
The height of reading platform is helped, is located at the lower section of swing ball, then changes the length of cycloid, observation is looked squarely, when the base on swing ball
During the first graticule and conllinear graduation mark on director circle loop wire, plane mirror, pendulum length is fixed, it is then write down by the second line
The reading of corresponding graduation mark, the reading which subtracts pendulum length initial position are actual pendulum length, the basic circle on swing ball
The first graticule and the unification of three line of graduation mark on loop wire, plane mirror, it is ensured that obtain accurately pendulum length reading.
Be provided with the auxiliary reading platform for the auxiliary reading position of platform is locked first
Locking knob, first locking knob are arranged on the rear end face of the auxiliary reading platform.Pass through the first locking knob
Reading of the fixed auxiliary reading platform in quadrate support upright bar, it is simple in structure, it is easy to operate, it is necessary to when adjusting up and down, only need
First locking knob is unscrewed, releases the locking state to aiding in reading platform, then up and down adjustment aids in reading platform extremely
Suitable position, screws the first locking knob, and auxiliary reading platform is locked again.
A sensing groove is provided with the auxiliary reading platform, the sensing groove is being located at the swing ball just
Lower section, is provided with sensor in the sensing groove.The sensing groove of the above-mentioned built-in sensors immediately below swing ball is used
In monitoring swing of the swing ball where sensor in plummet face, the swing of swing ball is then measured by the timer being arranged on base
Cycle.
The mounting base includes mounting platform, and the mounting platform can be arranged on to up and down adjustment the square branch
Support on column, two installing arms, installing arm described in two or so are provided with the mounting platform and is set, two institutes relatively
Rotatably arranged with there is a shaft between the installing arm stated, the upper end of the cycloid is described in the shaft described in being located at
Mounting platform on be provided with the cable-through hole of a up/down perforation, the barycenter of the swing ball is arranged on the center of the cable-through hole
On axis, the lower end of the cycloid is fixed on through the cable-through hole on the swing ball, the both ends of the shaft
The installing arm described in two is stretched out respectively, and one end of the shaft is provided with the operation rotation for driving the shaft to rotate
Button, the other end of the shaft are provided with the second locking knob for the rotating shaft position to be locked.Two installing arms
For installing the shaft of winding cycloid, easy to drive shaft to rotate, the second locking knob is used to lock shaft operation knob, makes it
It can not rotate, so that fixed pendulum length；Swung position-limiting action of the cable-through hole to cycloid.
The 3rd locking knob for the mounting platform position to be locked is provided with the mounting platform,
3rd locking knob is arranged on the rear end face of the mounting platform.Platform is fixedly mounted by the 3rd locking knob to exist
Position in quadrate support upright bar, it is simple in structure, it is easy to operate, it is necessary to when adjusting up and down, it is only necessary to unscrew the 3rd locking rotating
Button, releases the locking state to mounting platform, then up and down adjustment mounting platform to suitable position, screws the 3rd locking knob,
Mounting platform is locked again.
Compared with prior art, the utility model has the advantage of：Base bottom set 4 height adjustment bolts, 4
A height adjustment bolt is symmetrically arranged at four edges of base bottom, is used for by rotating height adjustment bolt the bottom of to
Seat carries out leveling processing, is used to judge whether leveling is completed by the testing agency being arranged on base, so that the single pendulum
Experiment instrument self leveling of energy in the case of experimental bench operating surface not severity, it is simple in structure, it can obtain more accurate
Pendulum length data, and then try to achieve more accurately local gravitational acceleration.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the enlarged structure schematic diagram at A in Fig. 1；
Fig. 3 is the enlarged structure schematic diagram at B in Fig. 1；
Fig. 4 is the rear structure schematic diagram of the utility model.
Embodiment
The utility model is described in further detail below in conjunction with attached drawing embodiment.
As shown in Figures 1 to 4, a kind of pendulum experimental instrument, including base 1 and swing ball 4, are vertically installed with base 1 square
Support post 2, the front end face of quadrate support column 2 are provided with graduation mark 3, peace are provided with quadrate support column 2 from top to bottom
Seat is filled, swing ball 4 is installed in mounting base by cycloid 5, and the bottom of base 1 is provided with 4 height adjustment bolts, and 4 height are adjusted
Section bolt is symmetrically arranged at four edges of 1 bottom of base, be provided with base 1 for detect base 1 whether leveling
Testing agency.
In this particular embodiment, testing agency is a horizontal bubble instrument 6, and the top end face 11 of base 1 is smooth for one
Horizontal end face, horizontal bubble instrument 6 is arranged on the top end face 11 of base 1.Testing agency is horizontal bubble instrument 6, simple in structure,
Easy to detect, the top end face 11 of the base 1 for installing horizontal bubble instrument 6 is a smooth horizontal end face, it is ensured that leveling
The accuracy of detection.
In this particular embodiment, horizontal bubble instrument 6 includes a closed transparent shell 61, is filled with transparent shell 61
Liquid, liquid are machine oil, and a bubble is additionally provided with transparent shell 61（Do not shown in figure）, in the upper surface of transparent shell 61
The heart is provided with one and is used to conclude whether the judgement of leveling identifies base, and judgement is identified as a judgement circle 62.Above-mentioned horizontal bubble instrument 6
It is simple in structure, it is easy to operate, during leveling, when bubble is entered in judgement circle 62, that is, represent the leveling of base 1, can be tested
Operation.
In this particular embodiment, the height adjustment bolt described in 4 is divided into a fixing bolt G1 and three rotate tune
Bolt G2 is saved, fixing bolt G1 is fixed at one of edge of 1 bottom of base, and three rotate adjusting bolt G2 and can turn
The other three edge of 1 bottom of base is arranged on dynamicly, and the other three edge of base 1 is respectively arranged with vertical installation
Hole（Do not shown in figure）, internal thread is provided with mounting hole, the bar portion for rotating adjusting bolt G2 is provided with and is engaged with internal thread
External screw thread, rotate adjusting bolt G2 by internal thread with it is externally threaded cooperation be installed in rotation on 1 bottom of base.4 height
Spend adjusting bolt, one is fixed on 1 bottom of base for fixing bolt G1, in addition 3 rotate adjusting bolt G2 rotatably arranged with
In 1 bottom of base, using the plane where fixing bolt G1 as datum level, rotate 3 rotation adjusting bolt G2, to base 1 into
Row Level tune, it is simple in structure, it is easy to operate.
In this particular embodiment, the auxiliary reading for aiding in reading precision data is provided with quadrate support column 2
Mechanism.Aid in reading pendulum length data by setting auxiliary reading mechanism to be used on quadrate support column 2, so as to obtain more smart
Accurate pendulum length value, and then obtain accurate experimental data.
In this particular embodiment, aiding in reading mechanism to include one can be arranged on to up and down adjustment on quadrate support column 2
Auxiliary reading platform 7, auxiliary reading platform 7 is arranged on the lower section of mounting base, and it is flat to be vertically provided with one on auxiliary reading platform 7
Face mirror 71, plane mirror 71 are arranged on the rear end face and quadrate support column 2 of the front end face of quadrate support column 2 and plane mirror 71
Front end face is affixed, and the front end face of plane mirror 71 is provided with first graticule 711 parallel with horizontal plane, two of plane mirror 71
Side end face is respectively arranged with second graticule 712 parallel with horizontal plane, and the both ends of the first graticule 711 are marked with two second respectively
The front end of line 712 is connected, and the outer surface of swing ball 4 is provided with a benchmark loop line 41, the matter of benchmark loop line 41 and swing ball 4
The heart is in same level, and one end of graduation mark 3 is located at the rear of plane mirror 71.Above-mentioned auxiliary reading mechanism is simple in structure,
It is easy to operate, the height of auxiliary reading platform 7 is adjusted during use, is located at the lower section of swing ball 4, then changes the length of cycloid 5
Degree, looks squarely observation, will when the first graticule 711 and conllinear graduation mark 3 on the benchmark loop line 41 on swing ball 4, plane mirror 71
Pendulum length is fixed, and the reading of the graduation mark 3 corresponding to it is then write down by the second line 712, which subtracts pendulum length starting
The reading of position is actual pendulum length, the benchmark loop line 41 on swing ball 4, the first graticule 711 and graduation mark 3 on plane mirror 71
Three lines are unified, it is ensured that obtain accurately pendulum length reading.
In this particular embodiment, aid in being provided with reading platform 7 for 7 position of auxiliary reading platform to be locked
The first locking knob 72, the first locking knob 72 is arranged on the rear end face of auxiliary reading platform 7.Pass through the first locking knob 72
7 position in quadrate support upright bar 2 of fixed auxiliary reading platform, it is simple in structure, it is easy to operate, it is necessary to when adjusting up and down, only
Need to unscrew first locking knob 72, release the locking state to aiding in reading platform 7, then up and down adjustment auxiliary reading is put down
Platform 7 screws the first locking knob 72, auxiliary reading platform 7 is locked again to suitable position.
In this particular embodiment, aid in being provided with a sensing groove 73 on reading platform 7, sensing groove 73 is located at swing ball
4 underface, senses in groove 73 and is provided with sensor（Do not shown in figure）.The above-mentioned built-in sensing immediately below swing ball 4
The sensing groove 73 of device is used to monitor swing ball 4 in the swing where sensor in plummet face, then the meter by being arranged on base 1
When device measure the swing period of swing ball 4.
In this particular embodiment, mounting base includes mounting platform 8, and mounting platform 8 can be arranged on to up and down adjustment square
On support post 2, two installing arms 81 are provided with mounting platform 8, two installing arms 81 or so are opposite and set, two installing arms
Rotatably arranged with there is a shaft 82 between 81, the upper end of cycloid 5 is provided with one around being located in shaft 82 on mounting platform 8
The cable-through hole 83 of up/down perforation, the barycenter of swing ball 4 are arranged on the central axis of cable-through hole 83, and the lower end of cycloid 5 passed through
String holes 83 is fixed on swing ball 4, and two installing arms 81 are stretched out at the both ends of shaft 82 respectively, and one end of shaft 82 is provided with for band
The operation knob that turn axis 82 rotates（Do not shown in figure）, the other end of shaft 82 is provided with for 82 position of shaft to be locked
Second locking knob 84.Two installing arms 81 are used for the shaft 82 for installing winding cycloid 5, and operation knob is easy to 82 turns of shaft of drive
Dynamic, the second locking knob 84 is used to lock shaft 82, it is not rotated, so that fixed pendulum length；Cable-through hole 83 is to cycloid 5
The position-limiting action that swung.
In this particular embodiment, the 3rd lock for 8 position of mounting platform to be locked is provided with mounting platform 8
Tight knob 85, the 3rd locking knob 85 are arranged on the rear end face of mounting platform 8.Platform is fixedly mounted by the 3rd locking knob 85
8 position in quadrate support upright bar 2, it is simple in structure, it is easy to operate, it is necessary to when adjusting up and down, it is only necessary to unscrew the 3rd lock
Tight knob 85, releases the locking state to mounting platform 8, then up and down adjustment mounting platform 8 to suitable position, screws the 3rd lock
Tight knob 85, mounting platform 8 is locked again.
Before experiment, leveling processing is carried out to base 1 by 4 height adjustment bolts, observes the bubble in horizontal bubble instrument 6
Trend, when bubble is entered in judgement circle 62,1 leveling of base is completed, and experiment can be proceeded by, first by the 3rd locking knob 85
Unscrew, up and down adjustment mounting platform, is adjusted the initial position of cycloid 5, after the completion of adjustment, screws the 3rd locking knob
85, the position of mounting platform 8 is fixed, then unscrews the first locking knob 72, the position adjustment for aiding in reading platform 7 is arrived
At the swing ball 4, while make first on plane mirror 71 to rule and 711 unify with one of 3 liang of lines of graduation mark, then screw the
One locking knob 72, the position for aiding in reading platform 7 is fixed, unscrews the second locking knob 84, and being in shaft 82 can turn
Dynamic state, operates operation knob, drives shaft 82 to rotate, observation is looked squarely, when the benchmark loop line 41 on swing ball 4, plane mirror 71
On the first graticule 711 and 3 three line of graduation mark unify when, screw the second locking knob 84, shaft 82 is not rotated, by pendulum length
Fix, the reading of the graduation mark 3 corresponding to it is then write down by the second line 712, which subtracts pendulum length initial position
Reading be actual pendulum length.
Claims (9)
1. a kind of pendulum experimental instrument, including base and swing ball, quadrate support column is vertically installed with the base, it is described
The front end face of quadrate support column is provided with graduation mark from top to bottom, is provided with mounting base on the quadrate support column, institute
The swing ball stated is installed in the mounting base by cycloid, it is characterised in that the bottom of the base is provided with 4 height
Adjusting bolt, the height adjustment bolt described in 4 is symmetrically arranged at four edges of the base bottom, described
Be provided with base for detect the base whether the testing agency of leveling.
A kind of 2. pendulum experimental instrument as claimed in claim 1, it is characterised in that the testing agency is a horizontal bubble instrument,
The top end face of the base is a smooth horizontal end face, and the horizontal bubble instrument is arranged on the top of the base
On end face.
3. a kind of pendulum experimental instrument as claimed in claim 1, it is characterised in that the height adjustment bolt described in 4 is divided into one
Fixing bolt and three rotation adjusting bolts, the fixing bolt are fixed at one of side of the base bottom
At angle, the rotation adjusting bolt described in three is rotatably arranged in the other three edge of the base bottom, described
The other three edge of base be respectively arranged with vertical mounting hole, internal thread is provided with the mounting hole, it is described
The bar portion of rotation adjusting bolt be provided with and pass through with the matched external screw thread of the internal thread, the rotation adjusting bolt
Internal thread is installed in rotation on the base bottom with externally threaded cooperation.
4. a kind of pendulum experimental instrument as claimed in claim 1, it is characterised in that be provided with use on the quadrate support column
The auxiliary reading mechanism of precision data is read in auxiliary.
A kind of 5. pendulum experimental instrument as claimed in claim 4, it is characterised in that the auxiliary reading mechanism include one can on
Under be adjustably arranged on auxiliary reading platform on the quadrate support column, the auxiliary reading platform is arranged on described
Mounting base lower section, a plane mirror is vertically provided with the auxiliary reading platform, the plane mirror is arranged on described
Quadrate support column front end face and the rear end face of the plane mirror and the front end face of the quadrate support column be affixed,
The front end face of the plane mirror is provided with first graticule parallel with horizontal plane, two side end faces of the plane mirror
Second graticule parallel with horizontal plane is respectively arranged with, the both ends of first graticule are marked with second described in two respectively
The front end of line is connected, and the outer surface of the swing ball is provided with a benchmark loop line, the benchmark loop line with it is described
The barycenter of swing ball be in same level, one end of the graduation mark is located at the rear of the plane mirror.
6. a kind of pendulum experimental instrument as claimed in claim 5, it is characterised in that be provided with use on the auxiliary reading platform
In the first locking knob that the auxiliary reading position of platform is locked, first locking knob is arranged on described
Auxiliary reading platform rear end face.
7. a kind of pendulum experimental instrument as claimed in claim 5, it is characterised in that be provided with one on the auxiliary reading platform
Sense groove, the sensing groove is located at the underface of the swing ball, sensor is provided with the sensing groove.
8. a kind of pendulum experimental instrument as claimed in claim 1, it is characterised in that the mounting base includes mounting platform, described
Mounting platform can be arranged on to up and down adjustment on the quadrate support column, two peaces are provided with the mounting platform
Dress arm, the installing arm described in two or so is opposite and sets, rotatably arranged with there is a shaft between the installing arm described in two, institute
The upper end for the cycloid stated is provided with the cable-through hole of a up/down perforation around being located in the shaft on the mounting platform,
The barycenter of the swing ball is arranged on the central axis of the cable-through hole, and the lower end of the cycloid passes through the mistake
String holes is fixed on the swing ball, and the installing arm described in two is stretched out at the both ends of the shaft respectively, the shaft
One end is provided with the operation knob for driving the shaft to rotate, and the other end of the shaft is provided with for by described in
Rotating shaft position locking the second locking knob.
9. a kind of pendulum experimental instrument as claimed in claim 8, it is characterised in that be provided with the mounting platform for inciting somebody to action
The 3rd locking knob that the mounting platform position is locked, the 3rd locking knob are arranged on the installation and put down
The rear end face of platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720671271.9U CN207319541U (en) | 2017-06-09 | 2017-06-09 | A kind of pendulum experimental instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720671271.9U CN207319541U (en) | 2017-06-09 | 2017-06-09 | A kind of pendulum experimental instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207319541U true CN207319541U (en) | 2018-05-04 |
Family
ID=62437087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720671271.9U Active CN207319541U (en) | 2017-06-09 | 2017-06-09 | A kind of pendulum experimental instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207319541U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111999776A (en) * | 2020-08-11 | 2020-11-27 | 北京惠风联合防务科技有限公司 | Gravity center detection device |
-
2017
- 2017-06-09 CN CN201720671271.9U patent/CN207319541U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111999776A (en) * | 2020-08-11 | 2020-11-27 | 北京惠风联合防务科技有限公司 | Gravity center detection device |
| CN111999776B (en) * | 2020-08-11 | 2023-10-31 | 北京惠风联合防务科技有限公司 | Gravity center detection device |
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