CN2194513Y - Augular speed and displacement measurer - Google Patents
Augular speed and displacement measurer Download PDFInfo
- Publication number
- CN2194513Y CN2194513Y CN 94238522 CN94238522U CN2194513Y CN 2194513 Y CN2194513 Y CN 2194513Y CN 94238522 CN94238522 CN 94238522 CN 94238522 U CN94238522 U CN 94238522U CN 2194513 Y CN2194513 Y CN 2194513Y
- Authority
- CN
- China
- Prior art keywords
- sensing element
- chopper wheel
- bearing
- control circuit
- fixed support
- 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
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- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The utility model is the angular speed and displacement measurer of the electric motor or the rotating machinery, which is composed of a bearing, a fixed bracket, a modulating disk, a sensing element, a control circuit board, and a sealing cap cover. The bracket is fixedly arranged on the stator or the non-rotating portion of the electric motor or the rotating machinery and is tightly crossed on the external ring of the bearing; the sensing element and the control circuit are fixed onto the bracket; the internal ring of the modulating disk is arranged on the rotating shaft of the electric motor or the rotating machinery; a trap in the bearing is arranged on the internal ring of the modulating disk; the trap in the bearing is tightly matched with the internal ring of the modulating disk; the modulating disk can conduct the signal modulation to the sensing element, and then, the modulating disk can control the output of the circuit. The angular speed and displacement measurer of the electric motor or the rotating machinery has the advantages of easy and exact orientation, anti-vibration, and dustproof property.
Description
The utility model relates to the measurement of angular velocity, angular displacement, refers to a kind of angular velocity, Angular Displacement Detecting device that is used for motor or rotary machine especially.
At present at the rotational angular velocity that detects motor and rotary machine, in the angular displacement, generally sensing element and chopper wheel are contained in its fixed part and rotating part respectively, for example: for angular velocity and the angular displacement that detects motor, usually sensing element is contained on the motor casing, chopper wheel is contained on the motor reel, chopper wheel rotates and when rotating at the axle along with motor, signal to sensing element is modulated, the alternating signal that produces in the sensing element has reacted the angular velocity and the angular displacement of motor, be alternating signal periodic reaction the angular velocity amount, the high-low level of alternating signal has reacted angular displacement.But this mode is to sensing element and chopper wheel installation site accuracy requirement height, and chopper wheel is difficult to accurately modulation and needs on-the-spot the installation sensing element, if take back in the chopper wheel installation site, then sensing element can't be subjected to the modulation of chopper wheel; Take over, then chopper wheel and sensing element are collided, and may make it to damage.Therefore exist make and debugging difficulty big, simultaneously since the environment for use of motor or rotary machine to be all vibration big and dust is many, so the installation site of sensing element and chopper wheel more is difficult to assurance, and the sensitivity of sensing element is also had a strong impact on.
The purpose of this utility model provides a kind of sensing element and chopper wheel can accurately be located, and has dustproof, the monoblock type angular velocity of antivibration, Angular Displacement Detecting device.
The utility model adopts following technical scheme: with existing angular velocity, the Angular Displacement Detecting device is the same, it contains sensing element and chopper wheel and control circuit board, the signal of sensing element after the chopper wheel modulation, by the control circuit output that is connected with sensing element, the cycle of output signal and high-low level have reacted angular velocity and angular displacement respectively, different is, this detecting device also has a bearing, one fixed support and a closing cap, fixed support dress is fixed in the stator of motor or rotary machine or non-rotating structure and wringing fit and bridges on bearing outer ring, sensing element and control circuit board are individually fixed on the fixed support, the internal ring device of chopper wheel is in the rotating shaft of motor or rotary machine, and bearing inner race is placed on the interior ring of chopper wheel and is wringing fit.Closing cap is installed on the fixed support and with bearing, fixed support, sensing element, control circuit board, chopper wheel capping.When the rotating shaft of motor or rotary machine is rotated, fixed support and bearing outer ring wringing fit owing to ring and bearing inner race wringing fit in the chopper wheel, then chopper wheel is modulated the signal of sensing element with identical speed along with the rotation of rotating shaft.Signal after modulation is exported an alternating signal by the control circuit that is connected with sensing element, the periodic reaction of signal the angular velocity of motor or rotary machine, the high-low level of signal has reacted its angular displacement.
Because the utility model has adopted inner ring and the interior ring of chopper wheel, outer ring and the support bracket fastened fit system of bearing and fixed support and bearing, make chopper wheel and sensing element can accurate positioning, antidetonation, simultaneously because the employing of closing cap makes sensing element have dust reduction capability.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the structural representation of existing detecting device.
Fig. 2 is the utility model end face structure synoptic diagram.
Fig. 3 be Fig. 2 " A-A " to partial schematic sectional view.
Fig. 4 is the sensing element bias mode circuit diagram of photo-electric for the utility model sensing element.
Fig. 5 is an output waveform figure of the present utility model.
Fig. 6 is that sensing element of the present utility model and chopper wheel relative position are the radial array synoptic diagram.
Fig. 7-Figure 10 adopts multi-form chopper wheel synoptic diagram for the utility model.
When Figure 11 adopts two groups of sensing elements for the utility model, sensing element and chopper wheel principle schematic.
Shown in Fig. 2-3, the utility model contains bearing 1, fixed support 2, chopper wheel 3, sensing element 4, control circuit board 5, closing cap 6, wherein fixed support 2 dress is fixed in the stator of motor or rotary machine or does not rotate partly and wringing fit bridges on bearing 1 outer ring 11, sensing element 4 and control circuit board 5 are fixed on the fixed support 2, interior ring 31 devices of chopper wheel 3 are in the rotating shaft of motor or rotary machine, bearing 1 inner ring 12 is placed on the interior ring 31 of chopper wheel 3 and is wringing fit, closing cap 6 is installed on the fixed support 2 and with bearing 1, support 2, chopper wheel 3,5 cappings of sensing element 4 control circuit boards, when the rotating shaft of motor or rotary machine is rotated, because ring 31 and bearing 1 inner ring 12 wringing fits in the chopper wheel 3, and fixed support 2 and bearing 1 outer ring 11 wringing fits, then chopper wheel 3 is modulated the signal of sensing element 4 with identical speed along with the rotation of rotating shaft, the control circuit board 5 output alternating signals of signal after modulation by being connected with sensing element 4, this signal is by cable 7 outputs, the cycle of signal and high-low level have reacted the angular velocity and the angular displacement of motor or rotary machine respectively, and closing cap 6 plays the dustproof effect, makes the sensitivity of sensing element 4 unlikely influenced.
When sensing element 4 adopts the direct-injection type photo electric sensitive element, this sensing element 4 is made up of light-emitting component 41 and receiving element 42, when the tooth 32 of chopper wheel 3 or groove 33 forward sensing element 4 places respectively to, receiving element 42 does not just receive or receives the light of light-emitting component 41, by control circuit board 5 corresponding low level of output or high level, when chopper wheel 3 rotated continuously, what control circuit board 5 was exported was a continuous pulsation square wave (as shown in Figure 5).
When sensing element 4 adopts variable-capacitance element, chopper wheel 3 can adopt along the material of different material of circumference or the different electric conductivity of surface coated, when chopper wheel 3 rotated continuously, the electric field of variable capacitance made control circuit board 5 outputs one consecutive pulses square wave with change.
When detecting device is used for Angular Displacement Detecting, when often requiring rotating shaft to go to a certain ad-hoc location, output level just in time produces a certain saltus step, in this case, earlier detecting device is locked in the position that produces required output level saltus step, and when rotating shaft is placed in this ad-hoc location, detecting device is fixed on motor or the rotary machine, then can satisfy required Angular Displacement Detecting requirement.For realizing the lock function of detecting device, shown in Fig. 2-3, can be earlier be screwed into pilot hole (not drawing among the figure) on the fixed support 2 with the dog screw on the closing cap 69, realization closing cap 6 is with the location between the fixed support 2; Utilize dog screw 8 to be screwed into again and can make sensing element 4 and chopper wheel 3 be in the pilot hole (not drawing among the figure) of output level saltus step on the chopper wheel 3, realize the location of closing cap with 3 of chopper wheels.This moment Design Orientation screw 8,9 and pilot hole the position time, should consider to make sensing element 4 and chopper wheel 3 just in time to be in the position of output level saltus step.
As shown in Figure 6, sensing element 4 also can be radial array with the relative position of chopper wheel 3.
When requiring to improve angular displacement resolution, only need to increase the quantity of sensing element.When adopting several sensing element, just can from the state of several signal combination, obtain 20 different angular displacements.Be illustrated in figure 8 as and adopt two sensing elements, the signal that the two spacing 1/4 sensing dish tooth pitch obtains, its angular displacement resolution is 1/4T, is 1/2T and adopt the angular displacement resolution of 1 sensing element gained output.
Claims (3)
1, a kind of angular velocity that is used to measure motor or rotary machine, the Angular Displacement Detecting device, it is by containing chopper wheel (3), sensing element (4), control circuit board (5), the signal of sensing element (4) after chopper wheel (3) modulation handled back output alternating signal by the control circuit board (5) that is connected with sensing element (4), it is characterized in that: this detecting device also includes a bearing (1), one fixed support (2) and a closing cap (6), fixed support (2) dress is fixed in the stator of motor or rotary machine or rotary part and wringing fit do not bridge on the outer ring (11) of bearing (1), sensing element (4) and control circuit board (5) are fixed on the fixed support (2), the interior ring (31) of chopper wheel (3) is installed in the rotating shaft of motor or rotary machine, the interior ring (31) that bearing (1) inner ring (12) is placed on chopper wheel (3) is gone up and is that wringing fit, closing cap (6) are installed in that fixed support (2) is gone up and with bearing (1), support (2), chopper wheel (3), sensing element (4) control circuit board (5) capping.
2, angular velocity as claimed in claim 1, Angular Displacement Detecting device is characterized in that: the lock in place hole that can make sensing element (4) output one skip signal is arranged respectively on said fixed support (2) chopper wheel (3).
3, angular velocity as claimed in claim 1, Angular Displacement Detecting device is characterized in that: said sensing element (4) can be radial array with the relative position of chopper wheel (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94238522 CN2194513Y (en) | 1994-04-09 | 1994-04-09 | Augular speed and displacement measurer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94238522 CN2194513Y (en) | 1994-04-09 | 1994-04-09 | Augular speed and displacement measurer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2194513Y true CN2194513Y (en) | 1995-04-12 |
Family
ID=33845910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94238522 Expired - Fee Related CN2194513Y (en) | 1994-04-09 | 1994-04-09 | Augular speed and displacement measurer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2194513Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100401136C (en) * | 2006-06-08 | 2008-07-09 | 中国科学院上海技术物理研究所 | Temp controllable modulator for space apparatus and method for preparing its modulating disk |
| CN100404334C (en) * | 2001-03-13 | 2008-07-23 | Ntn株式会社 | wheel support bearing assembly |
-
1994
- 1994-04-09 CN CN 94238522 patent/CN2194513Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404334C (en) * | 2001-03-13 | 2008-07-23 | Ntn株式会社 | wheel support bearing assembly |
| CN100401136C (en) * | 2006-06-08 | 2008-07-09 | 中国科学院上海技术物理研究所 | Temp controllable modulator for space apparatus and method for preparing its modulating disk |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |