CN102760368A - Adjusting device of simple pendulum balance position and initial movement position - Google Patents
Adjusting device of simple pendulum balance position and initial movement position Download PDFInfo
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- CN102760368A CN102760368A CN2012102036507A CN201210203650A CN102760368A CN 102760368 A CN102760368 A CN 102760368A CN 2012102036507 A CN2012102036507 A CN 2012102036507A CN 201210203650 A CN201210203650 A CN 201210203650A CN 102760368 A CN102760368 A CN 102760368A
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- cycloid
- pointer
- bevel protractor
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Abstract
The invention discloses an adjusting device of a simple pendulum balance position and an initial movement position. The adjusting device mainly comprises a cycloid pointer and an angle positioning plate, wherein the cycloid pointer is installed on a vertical column of a simple pendulum instrument; the angle positioning plate is installed on an angle ruler; a side edge of the angle positioning plate corresponding to a cycloid angle notch closed angle point is overlapped with an angle scale of the angle ruler so as to determine a pendulum angle; in the experiment, the cycloid is adjusted to drop right from the cycloid pointer tip at a limit position; the angle positioning plate is adjusted to a selected angle scale; a pendulum ball is tracked so that the cycloid passes through the closed angle point of the cycloid angle notch, then the cycloid swings within a vertical plane; the vertical plane is formed by the cycloid angle notch closed angle point and a balance position cycloid and is parallel to the angle ruler; and when the angle needs to be changed, only the angle positioning plate needs to be moved to a corresponding angle scale position.
Description
Affiliated field
The present invention relates to a kind of single pendulum and measure the device of acceleration of gravity, mainly is equilibrium position and the initial motion position of regulating swing ball, lays the first stone for improving measuring accuracy.
Background technology
It is the Physical Experiment of classics that single pendulum is measured acceleration of gravity.Cycloid is far away from bevel protractor in the experiment; Rely on the operator to estimate and regulate the 0 degree groove that static cycloid is parallel to bevel protractor, find equilibrium position accurately, resultant error is very big; Confirm the initial motion position of swing ball with range estimation; Swinging plane often is not parallel to the bevel protractor plane, and the pendulum angle of confirming thus is inaccurate, thereby makes the precision of measuring acceleration of gravity not high.
Summary of the invention
For the equilibrium position of the accurate static cycloid of quick adjustment and initial motion position, the raising measuring accuracy of definite swing ball; The present invention has designed the regulating device of a single pendulum equilibrium position and initial motion position; Can solve the bad adjusting in equilibrium position and initial motion position, cause the not high difficulty of measuring accuracy.
The regulating device of single pendulum of the present invention equilibrium position and initial motion position mainly is made up of cycloid pointer and angle location plate; The cycloid pointer is installed on the column of single pendulum appearance; 0 degree vertical extended line and of over-angle chi perpendicular to bevel protractor; Can before and after slide, stop nut has guaranteed that extreme position cycloid pointer needle point equals the distance that cycloid angle breach wedge angle is put bevel protractor to the distance of bevel protractor, the angle location plate is installed on the bevel protractor; The angle location plate side that cycloid angle breach wedge angle point is corresponding and the angle groove of bevel protractor overlap, in order to confirm pendulum angle.When beginning to test, the needle point of cycloid pointer reaches the extreme position of setting to the cycloid direction, and the operator just hangs down cycloid through the adjusting of base screw from the needle point of cycloid pointer; Guarantee that cycloid is parallel to the vertical extended line of over-angle chi zero degree; The equilibrium position of Here it is cycloid after mixing up is stepped back the cycloid pointer in order to avoid influence cycloid motion, and the adjusting angle location-plate is fixed up to selected angle groove place; The operator draws swing ball makes cycloid just pass through the wedge angle point of cycloid angle breach; Unclamp finger, swing ball will be swung in the vertical plane that is parallel to bevel protractor of cycloid angle breach wedge angle point and equilibrium position cycloid formation, when needing to change angle; Sliding tray allows the angle location plate on bevel protractor, to move, and the angle location plate is moved to corresponding angle groove position get final product.
The invention has the beneficial effects as follows, in measurement, can easily confirm the equilibrium position and the initial motion position of swing quickly and accurately, guarantee that swing ball moves in being parallel to the vertical plane of bevel protractor, guarantee that pendulum angle is accurate, thereby improve measuring accuracy.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Fig. 1 is the regulating device structural representation of single pendulum equilibrium position and initial motion position.
Fig. 2 is the left view of the regulating device of single pendulum equilibrium position and initial motion position.
Fig. 3 is the structural representation of screw shaped cycloid pointer.
Fig. 4 is the structural representation of tabular cycloid pointer.
Fig. 5 is the structural representation of angle location plate.
Fig. 6 is the structural representation of cycloid angle breach.
Among the figure, 1. base screw, 2. base, 3. column, 4. swing ball, 5. cycloid; 6. angle groove, 7. bevel protractor, 8. gib screw, 9. loose slot, 10. angle location plate, 11. seats of honour; 12. cycloid angle breach, 13. cycloid pointers, 14. stop nuts, 15. stopper slots, 16. tabular cycloid pointers.
Embodiment
In Fig. 1, Fig. 2, Fig. 3, Fig. 5 and Fig. 6; Cycloid pointer (13) is a screw thread shaft; Be installed on the column (3) of single pendulum appearance; The vertical extended line of zero degree of over-angle chi (7) and perpendicular to the plane of bevel protractor (7); Can slide front and back; The needle point that stop nut (14) has guaranteed extreme position cycloid pointer (13) equals cycloid angle breach (12) wedge angle to the distance of bevel protractor (7) and puts the distance of bevel protractor (7), when the operator regulates cycloid (5) and just passes through the needle point of extreme position cycloid pointer (13), explains that the needle point point of extreme position cycloid pointer (13) and the hitch point of cycloid (5) are on the same pedal line; Cycloid (5) is parallel to the vertical extended line of zero degree of bevel protractor (7); The equilibrium position of Here it is cycloid (5), cycloid pointer (13) slided backward in order to avoid influence the swing of cycloid (5) after debugging was accomplished, and angle location plate (10) is installed on the bevel protractor (7) by gib screw (8); Guarantee that the needle point of cycloid pointer (13), the hitch point of cycloid (5) and the wedge angle point of cycloid angle breach (12) constitute a perpendicular that is parallel to bevel protractor (7); Angle location plate (10) side that cycloid angle breach (12) wedge angle point is corresponding and the angle groove (6) of bevel protractor (7) overlap, and in order to confirm pendulum angle, the operator draws swing ball (4) makes cycloid (5) arrive the wedge angle point of cycloid angle breach (12); As the initial position of simple harmonic motion, the indicated angular readings of angle location plate (10) is exactly the pivot angle of current swing.
At the cycloid pointer shown in Fig. 4 is another embodiment of cycloid pointer among the present invention; Adopted the form of tabular cycloid pointer (16); Pass the holder below that stopper slot (15) is fixed on tabular cycloid pointer (16) bevel protractor (7) through screw; Tabular cycloid pointer (16) is crossed the vertical extended line of zero degree and perpendicular to bevel protractor (7); The needle point that the extreme position of stopper slot (15) guarantees tabular cycloid pointer (16) is put the distance of bevel protractor (7) to the wedge angle that the distance of bevel protractor (7) equals cycloid angle breach (12), and tabular cycloid pointer (16) can step back or turn to the position, next door again during test.
Claims (5)
1. the regulating device of single pendulum equilibrium position and initial motion position; Mainly form by cycloid pointer and angle location plate; It is characterized in that the cycloid pointer is installed on the column of single pendulum appearance; The angle location plate is installed on the bevel protractor by gib screw; The distance that cycloid angle breach wedge angle is put the bevel protractor plane equals the distance of the needle point of extreme position cycloid pointer to bevel protractor, and the angle location plate side that cycloid angle breach wedge angle point is corresponding and the angle groove of bevel protractor overlap, in order to confirm pendulum angle.
2. the regulating device of single pendulum according to claim 1 equilibrium position and initial motion position; It is characterized in that the cycloid pointer is a screw thread shaft; The wedge angle that the needle point extreme position that the vertical extended line of the zero degree of over-angle chi and perpendicular to bevel protractor, stop nut have been confirmed the cycloid pointer equals cycloid angle breach to the distance of bevel protractor is put the distance of bevel protractor.
3. the regulating device of single pendulum according to claim 1 equilibrium position and initial motion position; It is characterized in that the cycloid pointer also can be tabular cycloid pointer; Pass stopper slot by screw and be installed in bevel protractor base below; The extreme position of stopper slot guarantees that tabular cycloid pointer needle point equals the distance that cycloid angle breach wedge angle is put bevel protractor to the distance of bevel protractor, can slide to the rear or forward the next door to.
4. the regulating device of single pendulum according to claim 1 equilibrium position and initial motion position is characterized in that cycloid angle breach wedge angle point and equilibrium position cycloid constitute a vertical plane that is parallel to bevel protractor.
5. single pendulum swing ball movement locus control device according to claim 1 is characterized in that the angle location plate can move at bevel protractor upper edge sliding tray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210203650.7A CN102760368B (en) | 2012-06-20 | 2012-06-20 | Adjusting device of simple pendulum balance position and initial movement position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210203650.7A CN102760368B (en) | 2012-06-20 | 2012-06-20 | Adjusting device of simple pendulum balance position and initial movement position |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102760368A true CN102760368A (en) | 2012-10-31 |
| CN102760368B CN102760368B (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210203650.7A Expired - Fee Related CN102760368B (en) | 2012-06-20 | 2012-06-20 | Adjusting device of simple pendulum balance position and initial movement position |
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| CN (1) | CN102760368B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196352A (en) * | 2013-04-16 | 2013-07-10 | 山东科技大学 | Plane angle measuring instrument |
| CN103424164A (en) * | 2013-07-31 | 2013-12-04 | 济南科汇试验设备有限公司 | Pendulum bob weighing instrument |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201051330Y (en) * | 2007-05-21 | 2008-04-23 | 杨总 | A high-precise single pendulum testing instrument |
| CN201638426U (en) * | 2010-04-13 | 2010-11-17 | 浙江师范大学 | Closed controllable simple pendulum experimental instrument |
| CN201638427U (en) * | 2010-04-13 | 2010-11-17 | 浙江师范大学 | Controllable one/double-pendulum experimental instrument |
-
2012
- 2012-06-20 CN CN201210203650.7A patent/CN102760368B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201051330Y (en) * | 2007-05-21 | 2008-04-23 | 杨总 | A high-precise single pendulum testing instrument |
| CN201638426U (en) * | 2010-04-13 | 2010-11-17 | 浙江师范大学 | Closed controllable simple pendulum experimental instrument |
| CN201638427U (en) * | 2010-04-13 | 2010-11-17 | 浙江师范大学 | Controllable one/double-pendulum experimental instrument |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196352A (en) * | 2013-04-16 | 2013-07-10 | 山东科技大学 | Plane angle measuring instrument |
| CN103196352B (en) * | 2013-04-16 | 2015-07-08 | 山东科技大学 | Plane angle measuring instrument |
| CN103424164A (en) * | 2013-07-31 | 2013-12-04 | 济南科汇试验设备有限公司 | Pendulum bob weighing instrument |
| CN103424164B (en) * | 2013-07-31 | 2015-04-08 | 济南科汇试验设备有限公司 | Pendulum bob weighing instrument |
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| Publication number | Publication date |
|---|---|
| CN102760368B (en) | 2014-04-23 |
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Granted publication date: 20140423 Termination date: 20150620 |
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