CN107917681B - High-voltage isolating switch main shaft rotation angle measuring device and method based on synchronous belt transmission - Google Patents
High-voltage isolating switch main shaft rotation angle measuring device and method based on synchronous belt transmission Download PDFInfo
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- CN107917681B CN107917681B CN201711233262.2A CN201711233262A CN107917681B CN 107917681 B CN107917681 B CN 107917681B CN 201711233262 A CN201711233262 A CN 201711233262A CN 107917681 B CN107917681 B CN 107917681B
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 35
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- 238000005259 measurement Methods 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 7
- 239000012212 insulator Substances 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P13/00—Indicating or recording presence, absence, or direction, of movement
- G01P13/02—Indicating direction only, e.g. by weather vane
- G01P13/04—Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention discloses a high-voltage isolating switch main shaft corner measuring device based on synchronous belt transmission, which comprises a high-voltage isolating switch main shaft, a driving wheel, a driven wheel and a synchronous belt, wherein the driving wheel is fixedly arranged on the high-voltage isolating switch main shaft, the driving wheel is connected with the driven wheel in a matching manner through the synchronous belt, a driven wheel transmission shaft is fixedly arranged in the center of the driven wheel, and a rotary photoelectric encoder is fixedly arranged on the driven wheel transmission shaft. The invention also provides a device and a method for measuring the rotation angle of the main shaft of the high-voltage isolating switch based on synchronous belt transmission, wherein the device and the method are characterized in that the rotation angle of the main shaft of the high-voltage isolating switch is accurately measured by fixing the driving wheel on the main shaft of the high-voltage isolating switch, driving the rotating photoelectric encoder which is coaxial with the driven wheel to rotate, amplifying the rotation angle of the main shaft of the high-voltage isolating switch, and counting and identifying the direction of orthogonal encoding output pulses output by the rotating photoelectric encoder.
Description
Technical Field
The invention relates to a device and a method for measuring a rotation angle of a main shaft of a high-voltage isolating switch based on synchronous belt transmission, and belongs to the technical field of state detection of the high-voltage isolating switch.
Background
The outdoor high-voltage isolating switch has the common problems that mechanical faults such as unsmooth opening and closing, incomplete opening and closing, deformation of a transmission connecting rod and the like are difficult to find through daily inspection of operation and maintenance workers, power transmission time is delayed by temporary maintenance after the faults, the reliability of power supply is influenced, state detection and analysis are carried out on a high-voltage isolating switch operating mechanism, and the outdoor high-voltage isolating switch is an important means for improving the reliability of the power supply.
The main shaft rotation angle of the high-voltage isolating switch is the core signal quantity of the state detection of the operating mechanism of the isolating switch. The high-voltage isolating switch main shaft drives the connecting rod to move to drive the main knife to rotate to perform switching-on and switching-off operations, the rotating angle of the main shaft can reflect whether the isolating switch operation is in place, and mechanical defects such as jamming and deviation can be analyzed after comprehensive analysis of parameters such as motor current and main shaft torque.
Disclosure of Invention
In order to accurately reflect whether the contact between the contact head and the contact finger of the disconnecting switch is in place or not, the measurement of the rotation angle of the main shaft must be accurate. Alternative rotation angle measuring sensors include: a stay wire type displacement sensor, an integral gyroscope, an annular sheet type resistance absolute displacement sensor, a rotary photoelectric encoder and the like. The stay wire type displacement sensor has simple principle and convenient realization, but the characteristics of the steel wire can be changed by stretching and winding for many times, thereby influencing the measurement precision. The integral gyroscope can realize angle measurement, is not influenced by an external magnetic field environment, but is influenced by an integral loop, has null shift and temperature error, and has the rotation angle measurement accuracy of more than 0.5 degrees from reported documents, so that the requirements of measurement resolution and accuracy cannot be met. The annular sheet type resistance absolute displacement sensor reflects the size of a corner through the resistance change ratio, has high precision, but has a measurement blind area, cannot perform multi-turn measurement, and can also be influenced by field electromagnetic interference. The rotary photoelectric encoder converts the mechanical corner of the measured object into an orthogonal pulse signal through photoelectric conversion and outputs the orthogonal pulse signal, can reflect the rotation direction, has high sensitivity and accuracy, is not influenced by electromagnetic interference, and is safe and long in service life. However, the single-turn measurement resolution of the common photoelectric encoder is relatively limited, and the single-turn measurement resolution needs to be improved to meet the requirement of accurate measurement of the rotation angle of the high-voltage isolating switch.
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a novel excitation type lightning protection device.
In order to solve the technical problems, the invention provides a device and a method for measuring the rotation angle of a main shaft of a high-voltage isolating switch based on synchronous belt transmission.
The invention adopts the following technical scheme: high-voltage isolator main shaft corner measuring device based on synchronous belt drive, including high-voltage isolator main shaft, still include the action wheel, follow driving wheel, hold-in range, the action wheel is fixed to be set up high-voltage isolator main shaft, the action wheel passes through the hold-in range with connect from the driving wheel cooperation, the fixed transmission shaft from the driving wheel that is provided with in center from the driving wheel, from the fixed rotatory photoelectric encoder that is provided with in driving wheel transmission shaft, rotatory photoelectric encoder counts and direction recognition through output quadrature code output pulse, realizes the turned angle and the direction of motion's of high-voltage isolator main shaft accurate measurement.
As a better embodiment, the invention also comprises a fixed bracket, and the rotary photoelectric encoder and the driven wheel are respectively arranged at the top end and the bottom end of the fixed bracket in a matching way.
As a better embodiment, the invention further comprises a base, and the main shaft of the high-voltage isolating switch and the fixed support are respectively arranged on the base in a matching manner.
The invention also provides a measuring method of the high-voltage isolating switch main shaft rotation angle measuring device based on synchronous belt transmission, which specifically comprises the following steps:
step SS 1: determining the rotation angle measurement resolution delta theta of the main shaft of the high-voltage isolating switch;
step SS 2: determining a transmission ratio i of the synchronous belt through the rotation angle of a main shaft of the high-voltage isolating switch;
step SS 3: and determining the tooth number of the synchronous belt transmission system.
As a preferred embodiment, step SS1 specifically includes: the high-voltage isolating switch operating mechanism motor drives the high-voltage isolating switch main shaft to rotate, the main knife vertical connecting rod drives the pillar insulator on one side to rotate, the single-pole connecting rod enables the pillar insulator on the other side to rotate reversely by the same angle, the opening and closing action of a certain phase of the high-voltage isolating switch is completed, the horizontal connecting rod drives the other two phases to open and close simultaneously, and in the whole working process, the rotating angle of the high-voltage isolating switch main shaft corresponds to the full stroke of the opening or closing of the main knife switch;
setting the whole rotating angle of the main shaft of the high-voltage isolating switch as
In degrees, the angle of the insulation rotation of the support is
If the rotating radius of the main knife of the high-voltage isolating switch is r, the moving stroke of the main knife contact of the high-voltage isolating switch is S:
the stroke corresponding to the unit angle of the rotation of the main shaft of the high-voltage isolating switch is s0：
If the isolating switch is installed in a misplacement mode or a structural part is deformed, the size deviation detection resolution is delta l, and the error of the rotation angle of the high-voltage isolating switch main shaft is reflected
The approximation is:
in order to accurately measure the rotation angle of the main shaft of the high-voltage isolating switch, the resolution of the rotary photoelectric encoder should be higher than that of the high-voltage isolating switch
For one level of accuracy, the resolution Δ θ of the rotation angle measurement should be selected to be
Namely:
as a preferred embodiment, step SS2 specifically includes: setting the number of orthogonal coding pulses per circle output by the selected rotary photoelectric encoder as m0The transmission ratio i is the ratio of the number of pulses required for measurement accuracy to the number of pulses output per revolution:
as a preferred embodiment, step SS 3: setting the number of teeth of the driving wheel as Z1The number of teeth of the driven wheel is Z2Because of the synchronous motion, the transmission ratio i is the ratio of the big and small belt wheel teeth, namely:
after the number of teeth of the driving wheel is selected, the number of teeth of the driven wheel is:
Z2＝Z1×i；
according to the selected output pulse number of the rotary photoelectric encoder and the structural parameters of the high-voltage isolating switch, the design of a synchronous belt transmission system formed by the driving wheel and the driven wheel is completed, and the requirement for accurately measuring the rotating angle of the main shaft of the high-voltage isolating switch can be met.
The invention achieves the following beneficial effects: the invention provides a device and a method for measuring the rotation angle of a main shaft of a high-voltage isolating switch based on synchronous belt transmission.
Drawings
Fig. 1 is a schematic structural diagram of a perspective view of a main shaft rotation angle measuring device of a high-voltage isolating switch based on synchronous belt transmission.
Fig. 2 is a schematic structural diagram of a front view of a main shaft rotation angle measuring device of a high-voltage isolating switch based on synchronous belt transmission.
Fig. 3 is a schematic structural diagram of a top view of the high-voltage disconnecting switch main shaft rotation angle measuring device based on the synchronous belt drive of the invention.
The meanings of the symbols in the figures: the device comprises a driving wheel 1, a driven wheel 2, a synchronous belt 3, a high-voltage isolating switch main shaft 4, a rotary photoelectric encoder 5, a fixed support 6, a base 7 and a driven wheel transmission shaft 8.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, 2 and 3, the invention provides a synchronous belt transmission-based high-voltage isolator main shaft rotation angle measuring device, which comprises a high-voltage isolator main shaft 4, and is characterized by further comprising a driving wheel 1, a driven wheel 2 and a synchronous belt 3, wherein the driving wheel 1 is fixedly arranged on the high-voltage isolator main shaft 4, the driving wheel 1 is in fit connection with the driven wheel 2 through the synchronous belt 3, a driven wheel transmission shaft 8 is fixedly arranged at the center of the driven wheel 2, a rotary photoelectric encoder 5 is fixedly arranged on the driven wheel transmission shaft 8, and the rotary photoelectric encoder 5 performs counting and direction identification through outputting orthogonal encoding output pulses, so that the accurate measurement of the rotation angle and the movement direction of the high-voltage isolator main shaft 4 is realized.
As a preferred embodiment, the present invention further includes a fixed bracket 6, and the rotary photoelectric encoder 5 and the driven wheel 2 are respectively disposed at the top end and the bottom end of the fixed bracket 6 in a matching manner.
As a preferred embodiment, the present invention further includes a base 7, and the high voltage isolator main shaft 4 and the fixing bracket 6 are respectively disposed on the base 7 in a matching manner.
The invention also provides a measuring method of the high-voltage isolating switch main shaft rotation angle measuring device based on synchronous belt transmission, which is characterized by comprising the following steps:
step SS 1: determining the 4-rotation angle measurement resolution delta theta of the main shaft of the high-voltage isolating switch;
step SS 2: determining the transmission ratio i of the synchronous belt 3 by measuring the rotation angle of a main shaft 4 of the high-voltage isolating switch;
step SS 3: the number of teeth of the synchronous belt 3 transmission system is determined.
As a preferred embodiment, step SS1 specifically includes: the high-voltage isolating switch operating mechanism motor drives the high-voltage isolating switch main shaft 4 to rotate, the pillar insulator on one side is driven to rotate by the main knife vertical connecting rod, the pillar insulator on the other side is reversely rotated by the same angle by the single-pole connecting rod, the opening and closing action of a certain phase of the high-voltage isolating switch is completed, the other two phases of the high-voltage isolating switch are driven to open and close by the horizontal connecting rod, and the rotating angle of the high-voltage isolating switch main shaft 4 corresponds to the full stroke of opening or closing of the main knife switch in the whole working process;
the whole rotating angle of the main shaft 4 of the high-voltage isolating switch is set as
In degrees, the angle of the insulation rotation of the support is
If the rotating radius of the main knife of the high-voltage isolating switch is r, the moving stroke of the main knife contact of the high-voltage isolating switch is S:
the stroke corresponding to the unit angle of the rotation of the main shaft 4 of the high-voltage isolating switch is s0：
If the isolating switch is installed in a misplacement mode or a structural part is deformed, the size deviation detection resolution is delta l, and the error of the rotation angle of the high-voltage isolating switch main shaft 4 is reflected
The approximation is:
in order to accurately measure the rotation angle of the main shaft 4 of the high-voltage isolating switch, the resolution of the rotary photoelectric encoder 5 should be higher than that of the high-voltage isolating switch
For one level of accuracy, the resolution Δ θ of the rotation angle measurement should be selected to be
Namely:
as a preferred embodiment, step SS2 specifically includes: let m be the number of orthogonal code pulses per rotation output of the selected rotary photoelectric encoder 50The transmission ratio i is the ratio of the number of pulses required for measurement accuracy to the number of pulses output per revolution:
as a preferred embodiment, step SS 3: the number of teeth of the driving wheel 1 is set as Z1The number of teeth of the driven wheel 2 is Z2。
Claims (4)
1. A method for measuring the rotation angle of a main shaft of a high-voltage isolating switch based on synchronous belt transmission is characterized by comprising the following steps:
step SS 1: determining the rotation angle measurement resolution delta theta of the high-voltage isolating switch main shaft (4); the step SS1 specifically includes: the high-voltage isolating switch operating mechanism motor drives a high-voltage isolating switch main shaft (4) to rotate, a main knife vertical connecting rod drives a pillar insulator on one side to rotate, a single-pole connecting rod enables the pillar insulator on the other side to rotate reversely by the same angle, switching-on and switching-off actions of a certain phase of the high-voltage isolating switch are completed, meanwhile, the other two phases of switching-on and switching-off are driven by a horizontal connecting rod, and in the whole working process, the rotating angle of the high-voltage isolating switch main shaft (4) corresponds to the full stroke of switching-off or switching-on of;
the whole rotating angle of the main shaft (4) of the high-voltage isolating switch is set as
In degrees, the angle of the insulation rotation of the support is
If the rotating radius of the main knife of the high-voltage isolating switch is r, the moving stroke of the main knife contact of the high-voltage isolating switch is S:
the stroke corresponding to the unit angle of rotation of the main shaft (4) of the high-voltage isolating switch is s0：
If the isolating switch is installed in a misplacement way or the structural part is deformed, the size deviation detection resolution is delta l, and the error of the rotation angle of the high-voltage isolating switch main shaft (4) is reflected
The approximation is:
to refineThe rotation angle of the main shaft (4) of the high-voltage isolating switch is accurately measured, and the resolution of the rotary photoelectric encoder (5) is higher than that of the rotary photoelectric encoder
For one level of accuracy, the resolution Δ θ of the rotation angle measurement should be selected to be
Namely:
step SS 2: measuring the transmission ratio i of the synchronous belt (3) through the rotation angle of the main shaft (4) of the high-voltage isolating switch;
step SS 3: and determining the tooth number of a transmission system of the synchronous belt (3).
2. The method for measuring the rotation angle of the main shaft of the high-voltage isolating switch based on the synchronous belt drive as claimed in claim 1, wherein the step SS2 specifically comprises: the number of orthogonal coding pulses per circle output by the selected rotary photoelectric encoder (5) is set as m0The transmission ratio i is the ratio of the number of pulses required for measurement accuracy to the number of pulses output per revolution:
3. The method for measuring the main shaft rotation angle of the high-voltage isolating switch based on the synchronous belt drive as claimed in claim 1, wherein the step SS3 is as follows: the number of teeth of the driving wheel (1) is set as Z1The number of teeth of the driven wheel (2) is Z2Because of the synchronous motion, the transmission ratio i is the ratio of the big and small belt wheel teeth, namely:
after the number of teeth of the driving wheel (1) is selected, the number of teeth of the driven wheel (2) is as follows:
Z2＝Z1×i；
according to the selected output pulse number of the rotary photoelectric encoder (5) and the structural parameters of the high-voltage isolating switch, the design of a synchronous belt transmission system formed by the driving wheel (1) and the driven wheel (2) is completed, and the requirement of accurately measuring the rotation angle of the main shaft (4) of the high-voltage isolating switch can be met.
4. The measuring device adopting the high-voltage isolating switch main shaft rotation angle measuring method based on the synchronous belt drive as claimed in claim 1 comprises a high-voltage isolating switch main shaft (4), it is characterized by also comprising a driving wheel (1), a driven wheel (2) and a synchronous belt (3), the driving wheel (1) is fixedly arranged on the main shaft (4) of the high-voltage isolating switch, the driving wheel (1) is matched and connected with the driven wheel (2) through the synchronous belt (3), a driven wheel transmission shaft (8) is fixedly arranged at the center of the driven wheel (2), a rotary photoelectric encoder (5) is fixedly arranged on the driven wheel transmission shaft (8), the rotary photoelectric encoder (5) performs counting and direction identification by outputting orthogonal encoding output pulses to realize accurate measurement of the rotation angle and the movement direction of the high-voltage isolating switch main shaft (4);
the device is characterized by further comprising a fixed support (6), wherein the rotary photoelectric encoder (5) and the driven wheel (2) are respectively arranged at the top end and the bottom end of the fixed support (6) in a matched manner;
the high-voltage isolating switch is characterized by further comprising a base (7), wherein the high-voltage isolating switch main shaft (4) and the fixing support (6) are respectively arranged on the base (7) in a matched mode.
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| CN201711233262.2A CN107917681B (en) | 2017-11-30 | 2017-11-30 | High-voltage isolating switch main shaft rotation angle measuring device and method based on synchronous belt transmission |
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| CN107917681B true CN107917681B (en) | 2020-04-21 |
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| CN109143052B (en) * | 2018-08-22 | 2021-05-25 | 广东理工职业学院 | Circuit breaker operation clamp for motor protection |
| CN109444452A (en) * | 2018-10-17 | 2019-03-08 | 河海大学 | A kind of mechanism of precise measurement large torque Ultra-Low Speed torque system revolving speed and corner |
| CN110595350B (en) * | 2019-08-29 | 2024-04-09 | 国网四川省电力公司电力科学研究院 | High-voltage isolating switch angular displacement detection system and detection method thereof |
| CN110702039B (en) * | 2019-10-22 | 2021-06-01 | 国网宁夏电力有限公司经济技术研究院 | Device for measuring wind deflection angle of suspension insulator string |
| CN111238407B (en) | 2020-01-30 | 2020-12-01 | 华东交通大学 | Sensor system for measuring angle of contact net isolating switch knife |
| CN115038560B (en) * | 2020-03-17 | 2023-07-18 | 瑞德医疗机器股份有限公司 | Rotational position detecting unit |
| CN115265340B (en) * | 2022-06-24 | 2024-06-11 | 山东大学 | High-voltage isolating switch rotation angle measuring device and measuring method |
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| JPH11123193A (en) * | 1997-10-22 | 1999-05-11 | Olympus Optical Co Ltd | Rotary driving device for ultrasonic endoscope |
| JP2004050538A (en) * | 2002-07-18 | 2004-02-19 | Seiko Epson Corp | Gear train mechanism, platen gap adjuster, and recorder |
| CN200948998Y (en) * | 2006-05-20 | 2007-09-19 | 郭自刚 | Permanent-magnet gearless elevator traction machine with high sampling accuracy and labour-saving jigger mechanism |
| CN103644864B (en) * | 2013-12-17 | 2017-05-03 | 广东工业大学 | Machinery device for improving resolution of angle encoder and measurement precision |
| CN104596554B (en) * | 2015-01-08 | 2017-08-25 | 佛山轻子精密测控技术有限公司 | A kind of photo resistance encoder and its measuring method based on machinery subdivision |
| CN104597916B (en) * | 2015-01-13 | 2017-02-22 | 南京工程学院 | Wheel-track type large rotary table position control system and control method thereof |
| CN106705895B (en) * | 2017-02-10 | 2018-07-24 | 云南电网有限责任公司电力科学研究院 | A kind of high voltage isolator angle of eccentricity detection device |
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