CN201378060Y - Motor shaft hollow shaft rotary encoder - Google Patents
Motor shaft hollow shaft rotary encoder Download PDFInfo
- Publication number
- CN201378060Y CN201378060Y CN200920107334U CN200920107334U CN201378060Y CN 201378060 Y CN201378060 Y CN 201378060Y CN 200920107334 U CN200920107334 U CN 200920107334U CN 200920107334 U CN200920107334 U CN 200920107334U CN 201378060 Y CN201378060 Y CN 201378060Y
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- shaft
- encoder
- scrambler
- rotary transformer
- output
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Abstract
The utility model discloses a motor shaft hollow shaft rotary encoder. The hollow shaft rotary encoder uses a rotary transformer as a shaft angle transmitter, the rotary transformer is connected with an intelligent R / D converter plate by an output connecting wire, and then a converted angle-bit data is output by a long-wire transfer-drive cable. A rotor of the rotary transformer is installed on an input shaft of the encoder, and a stator and the intelligent R / D converter plate are critically and firmly installed on a base of the encoder to be sealed by a case to be assembled into the complete integrated hollow shaft rotary encoder. The utility model is characterized in that the hollow shaft rotary encoder can exempt from the requirements of concentricity in installation. When the encoder is installed, an input shaft sleeve of the encoder is directly embedded onto an output shaft of equipment, and the output shaft of the equipment circularly and firmly locks the input shaft sleeve of the encoder, so that the encoder and the equipment are combined together. A torque support of the encoder only plays a supporting role for the encoder.
Description
Technical field
The utility model relates to a kind of industrial detection technology, more particularly says, is meant the motor shaft tubular shaft resolving encoder of a kind of integrated small networking that is applicable under the rugged surroundings, can be used for the measurement of axis angular position and speed and has high end interface.
Background technology
At present, the axis angle measurement device that is most widely used has photo electric axis scrambler and motor shaft encoder.Optical electric axial angle encoder is a detecting element with high-precision Fringe of metrological Radial Gratings, converts the position of importing, angle to the corresponding digital code by opto-electronic conversion.Because the core detecting element of optical electric axial angle encoder is a photoelectric code disk, and the material of photoelectric code disk mainly contains three kinds: glass, plastics, metal.Vitreous code-disc is frangible, but good temp characteristic; The code-disc various aspects of performance of plastics matter is all poor, but low price; Metallic code-disc temperature characterisitic is poor, and environment requirement than higher, has greatly been limited the range of application of photoelectric encoder.Scale method and signal output form according to photoelectric encoder can be divided into incremental encoder and absolute type encoder.Incremental encoder is simple in structure, makes easily.Because its positional information that provides is increment type, so need initial alignment when using.Absolute type encoder is generally all made circulation binary code or Gray code, and directly the absolute position of output rotor does not need to measure initial position, but its complex process, the cost height is realized comparatively difficulty of high resolving power, high precision.
Motor shaft encoder is based on the axis angle measurement device of induction motor, and the most representative in the induction motor is rotary transformer.Rotary transformer is a kind of element that angle of rotor is transformed into the electric signal that becomes a certain funtcional relationship with it.Be equivalent to a rotary transformer on the principle, be equivalent to the two poles of the earth two-phase wire wound asynchronous motor on the structure.The principle of work of rotary transformer has determined it to have the advantage of self uniqueness, and such as being adapted at work under the rugged environment, as vibrations, dust impacts high temperature, environment such as corrosion; Be adapted at working under the situation of high rotating speed and high acceleration; In very wide temperature range, possesses high reliability, high precision and high mechanical property; Possesses high noiseproof feature; Possesses characteristic with the longer distance of analog signal transmission etc.Above characteristics have determined rotary transformer to have range of application very widely, but also can be applicable to the occasion of high precision, high reliability and environment very severe.Because rotary transformer is output as sinusoidal simulating signal,, need the external signal treatment circuit analog signal conversion could be become the digital signal of needs so it can not use separately usually.But the shaft angle-digital conversion circuit of existing motor shaft encoder and rotary transformer are splits, need the excitation power supply, the multi-channel dc power supply that provide special in addition, make the circuit complexity, and volume is big and cost an arm and a leg, and use very inconvenient.
With regard to mounting structure, because it is that split connects that motor shaft solid shaft resolving encoder is connected with equipment, during installation the scrambler mounting bracket must be arranged, the flexible connection axle sleeve, scrambler input shaft and equipment output shaft are connected with strict concentricity requirement, although can do the concentricity adjustment, it is impossible definitely with one heart that the concentricity of any direction is adjusted to.And the alignment error of any direction decentraction all can cause the scrambler lost of life and damage.
For practical application, simple digital signal still can not be directly and other equipment communicate.For example: it is SSI that a lot of industry spot need output interface, or the simulation of 4-20MA output, and other some occasions need Industrial Ethernet interface or PROFIBUS-DP interface etc.Fieldbus such as Industrial Ethernet, Profibus is used very extensive at industrial control field.All there is the LAN (Local Area Network) control of oneself in the manufacturing enterprise of high-intelligentization, as Industrial Ethernet, and Profibus etc.And existing split type resolving encoder needs to be equipped with in addition these high end interfaces, costs an arm and a leg, and its application is greatly limited, and more and more can not satisfy the requirement of modern industry control.
Summary of the invention
The purpose of this utility model provides that a kind of novelty simple in structure is convenient to install, high precision, high reliability, wide range of application, have the miniaturization of high end interface, integrated, networked motor shaft tubular shaft resolving encoder.
The utility model is a kind of motor shaft tubular shaft resolving encoder that is used for axis angular position and velocity survey, described tubular shaft resolving encoder is the shaft angle transmitter with the rotary transformer, be connected the angle bit data output after changing by long line transmission driving cable again with intelligent R/D change-over panel by rotation transformer output connecting line.The input shaft that the rotor of rotary transformer is installed in scrambler puts, and accurate firm being installed on the scrambler support of stator and R/D intelligent conversion plate is with being assembled into complete integrated tubular shaft resolving encoder behind the casing sealing.Its described tubular shaft resolving encoder can be exempted the requirement to concentricity when mounted.Directly be embedded on the equipment output shaft by scrambler input axle sleeve during installation, then with equipment output shaft retaining ring locking scrambler input axle sleeve, so just scrambler and equipment are consisted of one, do not need to do the concentricity adjustment, and scrambler moment support only plays the scrambler supporting role.
Intelligence R/D change-over panel is provided with R/D (shaft angle-numeral) decoding chip, D/A conversion chip, electric power management circuit, electrical isolation chip, long line transmission chip for driving, reverse-connection preventing circuit, anti-jamming circuit, dsp chip, SSI module, Industrial Ethernet module, ProfiBus-DP module and CAN bus module and forms.Its function of intelligence R/D change-over panel comprises: high power position (10,12,14,16) shaft angle-digital decoding and line output, serial output, analog quantity 4-20mA output, field-bus interface and Industrial Ethernet output.
The utility model uses direct current single supply working method, and the advantage that is used for axis angular position and velocity survey is:
1. adapt to abominable environment for use, high temperature, high humidity, big vibrations and impact;
2. solved complicated field power supply and the multi-channel dc power supply problem of adding that rely on;
3. realized the integrated small design of networked;
4. the module damage that can effectively prevent the power supply reversal connection and cause;
5. simple in structure, novel, exempted when installing requirement to concentricity;
6. described scrambler promptly can be used as absolute encoder and uses, and also can be used as incremental encoder and uses, and also can be used as the shaft angle transmitter and uses, fully the instead of optical photoelectric coder.
Description of drawings
Fig. 1 is that motor shaft solid shaft resolving encoder is installed sketch;
Fig. 2 is the structural representation of motor shaft tubular shaft resolving encoder;
Fig. 3 is the left view of motor shaft tubular shaft resolving encoder;
Fig. 4 is the circuit theory diagrams of intelligent R/D change-over panel.
Among the figure:
1. solid shaft resolving encoder 2. scrambler input shafts 3. flexible connection axle sleeves 4. scrambler mounting brackets
5. equipment output shaft 6. scramblers are imported axle sleeve 7. rotary transformers 8. rotary transformer rotors
9. rotary transformer stator 10. scrambler supports 11. connecting lines 12. scrambler casings
13. intelligent R/D change-over panel 14. equipment output shaft retaining rings 15. equipment output shafts 16. scrambler moment supports
17. long line transmission drives cable 18.R/D decoding chip 19.D/A conversion chip 20. electric power management circuits
21. long line transmission chip for driving 22. electrical isolation chips 23. reverse-connection protection circuits 24. anti-jamming circuits
25.DSP chip 26. Industrial Ethernet module 27.ProfiBus-DP modules
28.CAN bus module 29.SSI module.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
See also shown in Figure 1, it is that split connects that motor shaft solid shaft resolving encoder 1 is connected with equipment, must there be scrambler mounting bracket 4 to fix during installation solid shaft resolving encoder 1 is installed, flexible connection axle sleeve 3 is used for scrambler input shaft 2 is connected with equipment output shaft 5, this kind connected mode is to the be connected with strict concentricity requirement of scrambler input shaft 2 with equipment output shaft 5, although can do the concentricity adjustment, it is impossible definitely with one heart that the concentricity of any direction is adjusted to.And the alignment error of any direction decentraction all can cause the scrambler lost of life and damage.
See also shown in Figure 2, motor shaft tubular shaft resolving encoder comprises scrambler input axle sleeve 6, rotary transformer 7, rotary transformer rotor 8, rotary transformer stator 9, scrambler support 10, connecting line 11, scrambler casing 12, intelligence R/D change-over panel 13, equipment output shaft retaining ring 14, equipment output shaft 15, scrambler moment support 16 and long line drive output cable 17, this motor shaft tubular shaft resolving encoder is the shaft angle transmitter with rotary transformer 7, output connecting line 11 by rotary transformer 7 is connected with intelligent R/D change-over panel 13, the angle bit data output after will changing by long line transmission driving cable 17 again.The rotor 8 of rotary transformer is installed on the input axle sleeve 6 of scrambler, rotary transformer stator 9 and 13 accurate firm being installed on the scrambler support 10 of R/D intelligent conversion plate are with being assembled into complete integrated tubular shaft resolving encoder after 12 sealings of scrambler casing.Directly be embedded on the equipment output shaft 15 by scrambler input axle sleeve 6 during installation, then with equipment output shaft retaining ring 14 locking scrambler input axle sleeves 6, so just tubular shaft resolving encoder and equipment are consisted of one, and scrambler moment support 16 only plays the scrambler supporting role.Described mounting means can be exempted the requirement to concentricity.Intelligence R/D change-over panel 13 provides the sinusoidal excitation power supply for rotary transformer 7, rotary transformer 7 is under the effect of field power supply, described rotary transformer stator 9 forms stator field, the mutually orthogonal winding of two covers is arranged on the rotary transformer rotor 8, this two covers winding construction is identical, induces the signal that becomes the sine and cosine relation with the corner of rotary transformer on these two mutually orthogonal windings respectively.This cosine and sine signal is passed to intelligent R/D change-over panel 13 by the output connecting line 11 of rotary transformer 7, by intelligent R/D change-over panel 13 with this cosine and sine signal be converted to that digital quantity is parallel, serial output, analog quantity 4-20mA output, field-bus interface and Industrial Ethernet output, to satisfy the various needs of Industry Control.
See also shown in Figure 4; intelligence R/D change-over panel 13 is provided with R/D (shaft angle-numeral) decoding chip 18, D/A conversion chip 19, electric power management circuit 20, long line transmission chip for driving 21, dsp chip 25, Industrial Ethernet module 26, ProfiBus-DP module 27, CAN bus module 28 and SSI module 29, is provided with anti-jamming circuit 24, electrical isolation chip 22 and reverse-connection protection circuit 23 in addition.All above-mentioned chips are special-purpose integrated chip.R/D decoding chip 18 provides field power supply for rotary transformer 7, and the cosine and sine signal of described R/D decoding chip 18 transformers of spinning in the future 7 is converted to digital signal; D/A conversion chip 19 converts this digital signal to the analog quantity output of 4-20mA; Long line transmission chip for driving 21 can realize the long Distance Transmission problem of signal, and to be used to export digital quantity be that output of D0-D15 parallel port and serial ports are exported; 22 of electrical isolation chips are in order to prevent the interference of power supply and outer bound pair circuit; Described long line transmission chip for driving 21 is output as output of digital quantity parallel port and serial ports output; Electric power management circuit 20 provides its required power supply for each integrated chip; 24 of reverse-connection protection circuit 23 and anti-jamming circuits are to provide reverse connecting protection and jamproof function in 20 minutes for electric power management circuit; Dsp chip 25 is by the serial ports output receiving digital signals of long line transmission chip for driving 21; Dsp chip 25 extends out bus by it and is connected with ProfiBus-DP module 27 with Industrial Ethernet module 26, realizes the interface output of fieldbus and Industrial Ethernet; Dsp chip 25 links to each other with SSI module 29 with CAN bus module 28, realizes the function of output of CAN bus and synchronous serial interface.Thereby realize the integrated small design of networked, satisfy the needs of modernization industry control and communication.
Claims (2)
1, a kind of motor shaft tubular shaft resolving encoder comprises that scrambler input axle sleeve, rotary transformer, rotary transformer rotor, rotary transformer stator, scrambler support, connecting line, scrambler casing, intelligent R/D change-over panel, equipment output shaft retaining ring, equipment output shaft and long line drive output cable; Described motor shaft tubular shaft resolving encoder sends cosine and sine signal with the rotary transformer for the shaft angle transmitter, output connecting line by rotary transformer is connected with intelligent R/D change-over panel, intelligence R/D change-over panel converts cosine and sine signal to digital signal, and the digital signal that will drive after cable will be changed by long line transmission is exported again; The input shaft that the rotor of rotary transformer is installed in scrambler puts, stator and R/D intelligent conversion plate are installed on the scrambler support, scrambler input axle sleeve directly is embedded on the equipment output shaft, then with equipment output shaft retaining ring locking scrambler input axle sleeve, with being assembled into complete integrated tubular shaft resolving encoder behind the scrambler casing sealing.
2, a kind of motor shaft tubular shaft resolving encoder according to claim 1 is characterized in that: resolving encoder plays the effect of support by a scrambler moment support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920107334U CN201378060Y (en) | 2009-04-15 | 2009-04-15 | Motor shaft hollow shaft rotary encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920107334U CN201378060Y (en) | 2009-04-15 | 2009-04-15 | Motor shaft hollow shaft rotary encoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201378060Y true CN201378060Y (en) | 2010-01-06 |
Family
ID=41518176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920107334U Expired - Fee Related CN201378060Y (en) | 2009-04-15 | 2009-04-15 | Motor shaft hollow shaft rotary encoder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201378060Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915591A (en) * | 2010-08-02 | 2010-12-15 | 北京金自天正智能控制股份有限公司 | Insulation adaptive shaft for rotary encoder |
| CN101975592A (en) * | 2010-09-28 | 2011-02-16 | 北京金自天正智能控制股份有限公司 | Hollow shaft heavy-load rotary transformer encoder |
| CN102882343A (en) * | 2012-10-23 | 2013-01-16 | 桂林电器科学研究院 | Direct-current permanent-magnet brushless motor with internal encoder |
| CN106382948A (en) * | 2016-10-31 | 2017-02-08 | 山东日发纺织机械有限公司 | Novel counting device of rapier loom |
-
2009
- 2009-04-15 CN CN200920107334U patent/CN201378060Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915591A (en) * | 2010-08-02 | 2010-12-15 | 北京金自天正智能控制股份有限公司 | Insulation adaptive shaft for rotary encoder |
| CN101915591B (en) * | 2010-08-02 | 2012-06-27 | 北京金自天正智能控制股份有限公司 | Insulation adaptive shaft for rotary encoder |
| CN101975592A (en) * | 2010-09-28 | 2011-02-16 | 北京金自天正智能控制股份有限公司 | Hollow shaft heavy-load rotary transformer encoder |
| CN102882343A (en) * | 2012-10-23 | 2013-01-16 | 桂林电器科学研究院 | Direct-current permanent-magnet brushless motor with internal encoder |
| CN106382948A (en) * | 2016-10-31 | 2017-02-08 | 山东日发纺织机械有限公司 | Novel counting device of rapier loom |
| CN113029210A (en) * | 2016-10-31 | 2021-06-25 | 山东日发纺织机械有限公司 | Novel counting device of rapier loom |
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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: 20100106 Termination date: 20130415 |