CN202372251U - Phase difference measurement indicating dial for Bohr resonance spectrometer - Google Patents
Phase difference measurement indicating dial for Bohr resonance spectrometer Download PDFInfo
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- CN202372251U CN202372251U CN2011205171766U CN201120517176U CN202372251U CN 202372251 U CN202372251 U CN 202372251U CN 2011205171766 U CN2011205171766 U CN 2011205171766U CN 201120517176 U CN201120517176 U CN 201120517176U CN 202372251 U CN202372251 U CN 202372251U
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- display disc
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- angle scale
- phase difference
- angle
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Abstract
The utility model discloses a phase difference measurement indicating dial for a Bohr resonance spectrometer. The phase difference measurement indicating dial comprises a motor, an angle scale, a shaft cap and an indicating dial, wherein the angle scale is sleeved on an output shaft of the motor; the shaft cap is in threaded connection with the end part of the output shaft of the motor; the indicating dial is fixedly connected with the shaft cap; the angle scale is fixedly connected with the motor; the indicating dial and the angle scale are adjacently sleeved on the output shaft of the motor, and a gap of a certain distance is formed between the indicating dial and the angle scale; the diameter of the indicating dial is greater than that of the angle scale; an angle scale center hole is reserved in the angle scale; an indicating dial center hole is reserved in the indicating dial; the apertures of both the angle scale center hole and the indicating dial center hole are greater than the diameter of the output shaft of the motor; an angle indicating line is arranged along the diameter direction of the indicating dial on the indicating dial; and an anti-dazzling screen with a certain width is arranged at each of the two ends of the angle indicating line close to the outer edge of the indicating dial. The phase difference measurement indicating dial is simple in structure, rational in design, convenient to machine, popularize and use, low in implementation cost and high in practicability; and the measurement accuracy of a phase difference angle in the vicinity of 90 degrees is improved.
Description
Technical field
The utility model belongs to technical field of measuring equipment, especially relates to a kind of bohr resonance appearance phase difference measurement display disc.
Background technology
Bohr resonance appearance is the instrument that is used to study damped vibration and forced vibration; Can insist on amplitude versus frequency characte and the phase-frequency characteristic of doing forced vibration under the continuous effect in the cyclic drive of motor through this instrument research vibrational system; Wherein the research of phase-frequency characteristic is to obtain through measuring the phase differential that the forced vibration system lags behind motor cyclic drive power, and phase differential is measured through stroboscopic method by the phase difference measurement indicating device.The phase difference measuring apparatus of existing bohr resonance appearance by fixed angle scale with can form with the display disc that motor rotates; There is comparatively obvious defects in this device; Mainly show the equal diameters of angle scale and display disc, because a photogate that is used to measure the motor-driven power cycle has been installed on the top of display disc, the size of the length of photogate is all about 3cm; Blocked near the measured value of phase differential angle 90 ° on the angle scale; When phase differential is between 85 °～95 °, can not accurate reading, measuring error is bigger.
The utility model content
The utility model technical matters to be solved is to above-mentioned deficiency of the prior art, and a kind of bohr resonance appearance phase difference measurement display disc is provided, and it is simple in structure; Reasonable in design; Processing and fabricating is convenient, has improved near the measuring accuracy of phase differential angle 90 °, realizes that cost is low; Practical, be convenient to promote the use of.
For solving the problems of the technologies described above; The technical scheme that the utility model adopts is: a kind of bohr resonance appearance phase difference measurement display disc; It is characterized in that: comprise motor, be sleeved on angle scale on the motor output shaft, be threaded in the axle cap and the display disc that is fixedly connected with axle cap of motor output shaft end; Said angle scale is fixedly connected with motor; Said display disc and angle scale are adjacent to be sleeved on the motor output shaft and are provided with the gap of certain distance between the two, and the diameter of said display disc has the angle scale center pit that is used to be sleeved on the motor output shaft greater than the diameter of said angle scale on the said angle scale; Have the display disc center pit that is used to be sleeved on the motor output shaft on the said display disc; 0 °～180 ° angle line is carved with all greater than the diameter of said motor output shaft in the aperture of the aperture of said angle scale center pit and said display disc center pit on the said angle scale, said display disc is processed by transparent material; Its diametric(al) of said display disc upper edge is provided with the angle index line, is provided with the anti-dazzling screen that is used for shading light electric switch light signal of certain width near the two ends of the outer peripheral angle index line of said display disc.
Above-mentioned bohr resonance appearance phase difference measurement display disc, it is characterized in that: said angle scale is fixedly connected with motor through first screw.
Above-mentioned bohr resonance appearance phase difference measurement display disc is characterized in that: said first screw is two and lays with respect to the motor output shaft symmetry.
Above-mentioned bohr resonance appearance phase difference measurement display disc, it is characterized in that: said display disc is fixedly connected with axle cap through second screw.
Above-mentioned bohr resonance appearance phase difference measurement display disc is characterized in that: said second screw is two and lays with respect to the motor output shaft symmetry.
Above-mentioned bohr resonance appearance phase difference measurement display disc, it is characterized in that: the diameter of said display disc is than the big 2cm～5cm of diameter of said angle scale.
Above-mentioned bohr resonance appearance phase difference measurement display disc is characterized in that: the aperture of the aperture of said angle scale center pit and said display disc center pit is all than the big 1cm～2cm of diameter of said motor output shaft.
Above-mentioned bohr resonance appearance phase difference measurement display disc, it is characterized in that: the width of said anti-dazzling screen is 0.5cm～0.7cm, the length of said anti-dazzling screen is 1.0cm～1.5cm.
Above-mentioned bohr resonance appearance phase difference measurement display disc, it is characterized in that: said display disc is processed by transparent organic glass.
Above-mentioned bohr resonance appearance phase difference measurement display disc, it is characterized in that: two anti-dazzling screens that are positioned at said angle index line two ends are separately positioned on the both sides of said angle index line.
The utility model compared with prior art has the following advantages:
1, the utility model is simple in structure, reasonable in design, and processing and fabricating is convenient.
2, the aperture of the aperture of the utility model angle scale center pit and display disc center pit is all than the big 1cm～2cm of diameter of motor output shaft; Make things convenient for angle scale and display disc cover to install on the motor output shaft, and can guarantee that motor rotates the time, display disc rotate; And angle scale is fixed; When motor rotated, display disc and angle scale all can not be worn, and have prolonged serviceable life.
3, the diameter of the utility model display disc is greater than the diameter of said angle scale; During use only in the external photogate of the coboundary of display disc; Do not influence the angular readings value of angle scale; Improve near the measuring accuracy of phase differential angle 90 °, reduced near the measuring error of phase differential angle 90 °.
4, the realization cost of the utility model is low, practical, is convenient to promote the use of.
In sum, the utility model is simple in structure, and is reasonable in design; Processing and fabricating is convenient, has improved near the measuring accuracy of phase differential angle 90 °, has solved effectively that the angle scale coboundary is blocked by external photogate in the prior art bohr resonance appearance phase difference measurement indicating device; Angle is the problem that near the measured value 90 ° can not accurate reading; The realization cost is low, and is practical, is convenient to promote the use of.
Through accompanying drawing and embodiment, the technical scheme of the utility model is done further detailed description below.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the structural representation of the utility model angle scale.
Fig. 3 is the structural representation of the utility model display disc.
Fig. 4 is the user mode synoptic diagram of the utility model.
Description of reference numerals:
The 1-motor; The 2-angle scale; 2-1-angle scale center pit;
The 3-display disc; 3-1-display disc center pit; The 4-axle cap;
5-angle index line; The 6-anti-dazzling screen; The 7-photogate;
8-first screw; 9-second screw; The 10-flashlamp.
Embodiment
Like Fig. 1, Fig. 2 and shown in Figure 3; The utility model comprises motor 1, be sleeved on angle scale 2 on motor 1 output shaft, be threaded in the axle cap 4 and the display disc 3 that is fixedly connected with axle cap 4 of motor 1 output shaft end; Said angle scale 2 is fixedly connected with motor 1; Said display disc 3 is adjacent to be sleeved on motor 1 output shaft with angle scale 2 and is provided with the gap of certain distance between the two; The diameter of said display disc 3 is greater than the diameter of said angle scale 2; Have the angle scale center pit 2-1 that is used to be sleeved on motor 1 output shaft on the said angle scale 2, have the display disc center pit 3-1 that is used to be sleeved on motor 1 output shaft on the said display disc 3, the aperture of the aperture of said angle scale center pit 2-1 and said display disc center pit 3-1 is all greater than the diameter of said motor 1 output shaft; Be carved with 0 °～180 ° angle line on the said angle scale 2; Said display disc 3 is processed by transparent material, and its diametric(al) of said display disc 3 upper edges is provided with angle index line 5, is provided with the anti-dazzling screen 6 that is used for shading light electric switch 7 light signals of certain width near the two ends of said display disc 3 outer peripheral angle index lines 5.
As shown in Figure 1, in the present embodiment, said angle scale 2 is fixedly connected with motor 1 through first screw 8.Particularly, said first screw 8 is two and lays with respect to motor 1 output shaft symmetry.
As shown in Figure 1, in the present embodiment, said display disc 3 is fixedly connected with axle cap 4 through second screw 9.Particularly, said second screw 9 is two and lays with respect to motor 1 output shaft symmetry.
Like Fig. 1, Fig. 2 and shown in Figure 3, in the present embodiment, the diameter of said display disc 3 is than the big 2cm～5cm of diameter of said angle scale 2.The aperture of the aperture of said angle scale center pit 2-1 and said display disc center pit 3-1 is all than the big 1cm～2cm of diameter of said motor 1 output shaft.The width of said anti-dazzling screen 6 is 0.5cm～0.7cm, and the length of said anti-dazzling screen 6 is 1.0cm～1.5cm.Preferably, the diameter of said display disc 3 is than the big 3.5cm of diameter of said angle scale 2.The aperture of the aperture of said angle scale center pit 2-1 and said display disc center pit 3-1 is all than the big 1.5cm of diameter of said motor 1 output shaft.The width of said anti-dazzling screen 6 is 0.6cm.
As shown in figures 1 and 3, in the present embodiment, in the present embodiment, said display disc 3 is processed by transparent organic glass.Two anti-dazzling screens 6 that are positioned at said angle index line 5 two ends are separately positioned on the both sides of said angle index line 5.
As shown in Figure 4, during use, in the external photogate 7 of the coboundary of display disc 3, external flashlamp 10 above the side of axle cap 4, the flashing rate of external flashlamp 10 is controlled by the forced vibration system.The principle of work and the course of work of the utility model are: hand-turned display disc 3; Angle index line 5 on the display disc 3 is overlapped with 0 ° of angle line on the angle scale 2; Open motor 1 power supply then; Motor 1 drives axle cap 4 and rotates, and axle cap 4 drives display disc 3 rotations that are fixedly connected with it, and display disc 3 and motor 1, axle cap 4 are coaxial to rotate with the cycle.When forced vibration gets into the stable oscillation state; The forced vibration system sends the flashing rate of control signal control flashlamp 10; During flashlamp 10 each flash of lightes, the angle index line 5 on the display disc 3 will overlap with a certain fixed angle line on the angle scale 2, and this angle promptly is the phase differential that the forced vibration system lags behind motor 1 cyclic drive power; Read this angle, promptly measured phase differential.
The utility model since the diameter of display disc 3 greater than the diameter of said angle scale 2; During use only in the external photogate 7 of the coboundary of display disc 3; Do not influence the angular readings value of angle scale 2; Improve near the measuring accuracy of phase differential angle 90 °, reduced near the measuring error of phase differential angle 90 °.Solved angle scale coboundary in the prior art bohr resonance appearance phase difference measurement indicating device effectively by external photogate is blocked, near the measured value of phase differential angle 90 ° can not accurate reading problem.
The above; It only is the preferred embodiment of the utility model; Be not that the utility model is done any restriction; Everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection domain of the utility model technical scheme according to the utility model technical spirit.
Claims (10)
1. bohr resonance appearance phase difference measurement display disc; It is characterized in that: comprise motor (1), be sleeved on angle scale (2) on motor (1) output shaft, be threaded in the axle cap (4) and the display disc (3) that is fixedly connected with axle cap (4) of motor (1) output shaft end; Said angle scale (2) is fixedly connected with motor (1); Said display disc (3) is adjacent to be sleeved on motor (1) output shaft with angle scale (2) and is provided with the gap of certain distance between the two; The diameter of said display disc (3) is greater than the diameter of said angle scale (2); Have on the said angle scale (2) and be used to be sleeved on the angle scale center pit (2-1) on motor (1) output shaft; Have on the said display disc (3) and be used to be sleeved on the display disc center pit (3-1) on motor (1) output shaft; 0 °～180 ° angle line all greater than the diameter of said motor (1) output shaft, is carved with in the aperture of the aperture of said angle scale center pit (2-1) and said display disc center pit (3-1) on the said angle scale (2), said display disc (3) is processed by transparent material; Its diametric(al) of said display disc (3) upper edge is provided with angle index line (5), is provided with the anti-dazzling screen (6) that is used for shading light electric switch (7) light signal of certain width near the two ends of the outer peripheral angle index line of said display disc (3) (5).
2. according to the described bohr resonance of claim 1 appearance phase difference measurement display disc, it is characterized in that: said angle scale (2) is fixedly connected with motor (1) through first screw (8).
3. according to the described bohr of claim 2 resonance appearance phase difference measurement display disc, it is characterized in that: said first screw (8) is two and lays with respect to motor (1) output shaft symmetry.
4. according to claim 1,2 or 3 described bohr resonance appearance phase difference measurement display discs, it is characterized in that: said display disc (3) is fixedly connected with axle cap (4) through second screw (9).
5. according to the described bohr of claim 4 resonance appearance phase difference measurement display disc, it is characterized in that: said second screw (9) is two and lays with respect to motor (1) output shaft symmetry.
6. according to the described bohr resonance of claim 5 appearance phase difference measurement display disc, it is characterized in that: the diameter of said display disc (3) is than the big 2cm～5cm of diameter of said angle scale (2).
7. according to the described bohr of claim 5 resonance appearance phase difference measurement display disc, it is characterized in that: the aperture of the aperture of said angle scale center pit (2-1) and said display disc center pit (3-1) is all than the big 1cm～2cm of diameter of said motor (1) output shaft.
8. according to the described bohr resonance of claim 5 appearance phase difference measurement display disc, it is characterized in that: the width of said anti-dazzling screen (6) is 0.5cm～0.7cm, and the length of said anti-dazzling screen (6) is 1.0cm～1.5cm.
9. according to the described bohr resonance of claim 5 appearance phase difference measurement display disc, it is characterized in that: said display disc (3) is processed by transparent organic glass.
10. according to the described bohr resonance of claim 8 appearance phase difference measurement display disc, it is characterized in that: two anti-dazzling screens (6) that are positioned at said angle index line (5) two ends are separately positioned on the both sides of said angle index line (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205171766U CN202372251U (en) | 2011-12-12 | 2011-12-12 | Phase difference measurement indicating dial for Bohr resonance spectrometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205171766U CN202372251U (en) | 2011-12-12 | 2011-12-12 | Phase difference measurement indicating dial for Bohr resonance spectrometer |
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| Publication Number | Publication Date |
|---|---|
| CN202372251U true CN202372251U (en) | 2012-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205171766U Expired - Fee Related CN202372251U (en) | 2011-12-12 | 2011-12-12 | Phase difference measurement indicating dial for Bohr resonance spectrometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202372251U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019737A (en) * | 2014-06-13 | 2014-09-03 | 四川大学 | Method for measuring Pohl resonance phase difference by using digital oscilloscope |
| CN104019801A (en) * | 2014-06-13 | 2014-09-03 | 四川大学 | Method for measuring Bohr resonance phase difference and modifying data through continuous photographing or camera shooting |
| CN104021711A (en) * | 2014-06-13 | 2014-09-03 | 四川大学 | Method for measuring Pohl resonance phase difference by using photogates |
| CN108564853A (en) * | 2018-03-14 | 2018-09-21 | 四川大学 | A kind of device accurately adjusting waling stripe for bohr resonance instrument |
-
2011
- 2011-12-12 CN CN2011205171766U patent/CN202372251U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019737A (en) * | 2014-06-13 | 2014-09-03 | 四川大学 | Method for measuring Pohl resonance phase difference by using digital oscilloscope |
| CN104019801A (en) * | 2014-06-13 | 2014-09-03 | 四川大学 | Method for measuring Bohr resonance phase difference and modifying data through continuous photographing or camera shooting |
| CN104021711A (en) * | 2014-06-13 | 2014-09-03 | 四川大学 | Method for measuring Pohl resonance phase difference by using photogates |
| CN104021711B (en) * | 2014-06-13 | 2016-03-09 | 四川大学 | Photoelectricity door is utilized to measure the method for glass ear resonance phasic difference |
| CN104019801B (en) * | 2014-06-13 | 2016-03-30 | 四川大学 | Utilize chronophotograph or videographic measurment glass ear resonance phasic difference and data correcting method |
| CN104019737B (en) * | 2014-06-13 | 2016-08-31 | 四川大学 | Utilize the method that digital oscilloscope measures glass ear resonance phase difference |
| CN108564853A (en) * | 2018-03-14 | 2018-09-21 | 四川大学 | A kind of device accurately adjusting waling stripe for bohr resonance instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20121212 |