CN204255972U - Gear rotational speed measuring instrument - Google Patents
Gear rotational speed measuring instrument Download PDFInfo
- Publication number
- CN204255972U CN204255972U CN201420752489.3U CN201420752489U CN204255972U CN 204255972 U CN204255972 U CN 204255972U CN 201420752489 U CN201420752489 U CN 201420752489U CN 204255972 U CN204255972 U CN 204255972U
- Authority
- CN
- China
- Prior art keywords
- photoelectricity door
- circular reflector
- receiving end
- transmitting terminal
- photoelectricity
- 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
Links
Abstract
A kind of gear rotational speed measuring instrument, is mainly used in the measurement of various gear rotational speed.It comprises photoelectricity door counter, photoelectricity door transmitting terminal, photoelectricity door receiving end, circular reflector, toothed disc.Photoelectricity door counter is connected with photoelectricity door transmitting terminal and photoelectricity door receiving end, and circular reflector is attached on toothed disc, and photoelectricity door transmitting terminal and photoelectricity door receiving end are arranged on directly over circular reflector.When toothed disc rotates, circular reflector is driven to rotate.When circular reflector forwards to below photoelectricity door transmitting terminal and photoelectricity door receiving end, the light signal that photoelectricity door transmitting terminal sends is reflected by circular reflector, is received by photoelectricity door receiving end.Photoelectricity door counter starts counting.Circular reflector number can according to circumstances be selected.
Description
Technical field
The utility model relates to a kind of gear rotational speed measuring instrument.
Background technology
Current tachometric survey instrument utilizes photoelectric code disk to test the speed, and this is the contactless velocimetry of one that frequency or cycle by measuring tach signal measures motor speed.Photoelectric code disk is arranged on rotor-end axle, and along with the rotation of rotor, photoelectric code disk also and then rotates together, if there is a fixed light source to be radiated on code-disc, then light activated element can be utilized to accept light, the number of times receiving light is exactly the coded number of code-disc.If coded number is l, Measuring Time is t, and the umber of pulse measured is N, then rotating speed n=(N/t*l) * 60.This appliance requires is arranged on photoelectric code disk on rotor, because photoelectric code disk has larger moment of inertia, can have influence on the rotation of system under test (SUT).And photoelectric code disk rotates with transmitting gear, threaten the safety of survey crew.
Summary of the invention
In order to overcome existing tachometric survey instrument, inconvenience is installed, affect the problem of system under test (SUT) running, the utility model provides a kind of gear rotational speed measuring instrument, and it is easy for installation that this tests gear rotational speed measuring instrument, decrease the impact on system under test (SUT) running, and simple, convenient.
The utility model comprises photoelectricity door counter, photoelectricity door transmitting terminal, photoelectricity door receiving end, circular reflector, toothed disc.Photoelectricity door counter is connected with photoelectricity door transmitting terminal and photoelectricity door receiving end, and circular reflector is attached on toothed disc, and photoelectricity door transmitting terminal and photoelectricity door receiving end are arranged on directly over circular reflector.When toothed disc rotates, circular reflector is driven to rotate.When circular reflector forwards to below photoelectricity door transmitting terminal and photoelectricity door receiving end, the light signal that photoelectricity door transmitting terminal sends is reflected by circular reflector, is received by photoelectricity door receiving end.Photoelectricity door counter starts counting.Circular reflector number can according to circumstances be selected.If toothed disc rotating speed is fast, only can paste one, such photoelectricity door counter detects that the mistiming of twice photosignal is exactly one-period, and rotating speed is the inverse in cycle.If rotating speed is comparatively slow, toothed disc can open circular reflector at the same n that circumferentially pastes uniformly, and at this moment photoelectricity door counter detects that the mistiming t of twice photosignal is exactly the 1/n of one-period T, and rotating speed is 1/ (n*t).
The normal work influence of the utility model to toothed disc is less, is specially adapted to the measurement of the rotating speed of lightweight toothed disc.Operating personnel away from working gear district, can ensure that the safety of personnel.Instrument is easy to installing/dismounting.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Accompanying drawing 1 is structural representation of the present utility model.
1. photoelectricity door counter, 2. photoelectricity door transmitting terminal, 3. photoelectricity door receiving end, 4. circular reflector, 5. toothed discs in figure.
Embodiment
Photoelectricity door counter (1) is connected with photoelectricity door transmitting terminal (2) and photoelectricity door receiving end (3), circular reflector (4) is attached on toothed disc (5), and photoelectricity door transmitting terminal (2) and photoelectricity door receiving end (3) are arranged on directly over circular reflector (4).When toothed disc (5) rotates, circular reflector (4) is driven to rotate.When circular reflector (4) forwards photoelectricity door transmitting terminal (2) and photoelectricity door receiving end (3) below to, the light signal that photoelectricity door transmitting terminal (2) sends is reflected by circular reflector (4), is received by photoelectricity door receiving end (3).Photoelectricity door counter (1) starts counting.Circular reflector (4) number can according to circumstances be selected.If toothed disc (5) rotating speed is fast, only can paste one, such photoelectricity door counter (1) detects that the mistiming of twice photosignal is exactly one-period, and rotating speed is the inverse in cycle.If rotating speed is slower, toothed disc (5) can open circular reflector (4) at the same n that circumferentially pastes uniformly, at this moment photoelectricity door counter (1) detects that the mistiming t of twice photosignal is exactly the 1/n of one-period T, and rotating speed is 1/ (n*t).
Claims (1)
1. a gear rotational speed measuring instrument, is characterized in that: photoelectricity door counter is connected with photoelectricity door transmitting terminal and photoelectricity door receiving end, and circular reflector is attached on toothed disc, and photoelectricity door transmitting terminal and photoelectricity door receiving end are arranged on directly over circular reflector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420752489.3U CN204255972U (en) | 2014-12-05 | 2014-12-05 | Gear rotational speed measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420752489.3U CN204255972U (en) | 2014-12-05 | 2014-12-05 | Gear rotational speed measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204255972U true CN204255972U (en) | 2015-04-08 |
Family
ID=52960266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420752489.3U Expired - Fee Related CN204255972U (en) | 2014-12-05 | 2014-12-05 | Gear rotational speed measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204255972U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104907133A (en) * | 2015-06-12 | 2015-09-16 | 遵义市立新机械有限责任公司 | Speed measurement device for crusher rotor |
| CN104931720A (en) * | 2015-06-25 | 2015-09-23 | 张卫忠 | Photoelectric conversion device and motor rotational speed measuring device comprising same |
| CN105067833A (en) * | 2015-08-28 | 2015-11-18 | 无锡伊佩克科技有限公司 | Automobile engine rotating speed detection apparatus based on power controller |
| CN105158495A (en) * | 2015-08-28 | 2015-12-16 | 无锡伊佩克科技有限公司 | Rotating speed detection device based on power supply control and output pulse frequency |
| CN105181990A (en) * | 2015-08-28 | 2015-12-23 | 无锡伊佩克科技有限公司 | Automobile engine rotating speed detection device |
| CN105242059A (en) * | 2015-10-12 | 2016-01-13 | 东南大学成贤学院 | Rotating speed measuring instrument by means of visual persistence and lens imaging principle, and measuring method thereof |
| CN109473021A (en) * | 2018-12-04 | 2019-03-15 | 南京林业大学 | Carousel-type supersonic Doppler effect experiment instrument |
-
2014
- 2014-12-05 CN CN201420752489.3U patent/CN204255972U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104907133A (en) * | 2015-06-12 | 2015-09-16 | 遵义市立新机械有限责任公司 | Speed measurement device for crusher rotor |
| CN104931720A (en) * | 2015-06-25 | 2015-09-23 | 张卫忠 | Photoelectric conversion device and motor rotational speed measuring device comprising same |
| CN105067833A (en) * | 2015-08-28 | 2015-11-18 | 无锡伊佩克科技有限公司 | Automobile engine rotating speed detection apparatus based on power controller |
| CN105158495A (en) * | 2015-08-28 | 2015-12-16 | 无锡伊佩克科技有限公司 | Rotating speed detection device based on power supply control and output pulse frequency |
| CN105181990A (en) * | 2015-08-28 | 2015-12-23 | 无锡伊佩克科技有限公司 | Automobile engine rotating speed detection device |
| CN105242059A (en) * | 2015-10-12 | 2016-01-13 | 东南大学成贤学院 | Rotating speed measuring instrument by means of visual persistence and lens imaging principle, and measuring method thereof |
| CN105242059B (en) * | 2015-10-12 | 2018-06-26 | 东南大学成贤学院 | Utilize the persistence of vision and the tachometric survey instrument and measuring method of lens imaging principle |
| CN109473021A (en) * | 2018-12-04 | 2019-03-15 | 南京林业大学 | Carousel-type supersonic Doppler effect experiment instrument |
| CN109473021B (en) * | 2018-12-04 | 2022-12-09 | 南京林业大学 | Turntable type ultrasonic Doppler effect experimental instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 Termination date: 20151205 |
|
| EXPY | Termination of patent right or utility model |