CN108914889A - Power station door machine grasping beam trailing cable control device and control method - Google Patents
Power station door machine grasping beam trailing cable control device and control method Download PDFInfo
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- CN108914889A CN108914889A CN201810737435.2A CN201810737435A CN108914889A CN 108914889 A CN108914889 A CN 108914889A CN 201810737435 A CN201810737435 A CN 201810737435A CN 108914889 A CN108914889 A CN 108914889A
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- cable
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
- E02B7/26—Vertical-lift gates
- E02B7/36—Elevating mechanisms for vertical-lift gates
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- Engineering & Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
A kind of power station door machine grasping beam trailing cable control device and control method, it includes frame, directive wheel, friction pulley and encoder, cable is clamped by using the setting directive wheel in adjustable frame and friction pulley, directive wheel and friction wheel from rotation are driven when passing through twisted and released of the cable, encoder rotation is driven by directive wheel, the displacement of cable is converted into electric signal by encoder, then converts the electrical signal to digital code, the initial position of the corresponding measurement of the show value of digital code and final position.The problem of being easily snapped off the present invention overcomes original hydro-power station grasping beam cable stress asynchronous with cable, it is simple with structure, the straight-line displacement instant playback of cable can be achieved, immediately the exact position of grasping beam trailing cable is obtained, it is run convenient for control grasping beam and cable synchronizing, cable is not easy the characteristics of stress fractures, and this method is simply applicable in, and synchronous effect is good.
Description
Technical field
The invention belongs to turbine entrance bucket axle journal technical field of sealing technology, are related to a kind of power station door machine grasping beam trailing cable control
Device processed.
Background technique
Door machine grasping beam is important tool of the power station door machine in open-close sluice gate, and grasping beam trailing cable be connection door machine with
The sole source channel of grasping beam, importance are self-evident；The retinue deep-sea cable control mode of door machine grasping beam mainly has two at present
Kind：
1, Torque Control, the torque by controlling grasping beam cable motor realize the same of grasping beam trailing cable and door machine main hook
Step；This control mode has the disadvantage that：1) it is synchronous to cannot achieve deep-sea cable, cable is too long, is self-possessed excessive, cable is upper
Torque difference between lower limit is excessive, can not compensate；2) torque disturbing factor is excessive, and the control mode is since its big retarding is than needing
It asks, using cycloidal pin wheel reducer, external drag is influenced by factors such as environment temperature, lubricating condition, runing times,
Cause torque output unstable；3) it under the control mode, is constantly in the operation of grasping beam trailing cable by state of tension, is unfavorable for
Cable stable operation, easily cause cable core break, the service life reduce situations such as.
2, speed control is controlled grasping beam cable motor speed by way of frequency control, makes cable speed and door machine master
Hook speed is consistent substantially.The control mode has the disadvantage that：1) frequency conversion speed control in low speed there are large error,
It can not accomplish fully synchronized operation；2) speed control is without feedback device, and there are cumulative errors, cumulative errors poles in operational process
Cable is easily caused to break；3) without cable position detection device, cable submerged condition can not judge, easily cause cable redundancy amount big or
It breaks.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of power station door machine grasping beam trailing cable control device and controls
Method processed, structure is simple, clamps cable using directive wheel and friction pulley are arranged in adjustable frame, and when twisted and released of the cable drives
Directive wheel and friction wheel from rotation, directive wheel drive encoder rotation, and the displacement of cable is converted into electric signal by encoder, then will be electric
Signal is converted into digital code, the initial position of the corresponding measurement of the show value of digital code and final position, realizes the straight line position of cable
Instant playback is moved, obtains the exact position of grasping beam trailing cable immediately, is run convenient for control grasping beam and cable synchronizing, cable is not easy
Stress fractures, and this method is simply applicable in, and synchronous effect is good.
In order to solve the above technical problems, the technical scheme adopted by the invention is that：A kind of power station door machine grasping beam retinue electricity
Cable control device, it includes frame, directive wheel, friction pulley and encoder；The directive wheel and friction pulley is located at hollow frame
It is connected thereto in frame；The encoder is connect with directive wheel；The encoder is located at outside frame；The directive wheel is located at friction pulley
Upside；Gap between the directive wheel and friction pulley passes through cable；Gap between the directive wheel and friction pulley is adjustable
It is whole.
The frame includes the lower bent plate connecting with upper bent plate；The upper bent plate is downward opening groove body, and two sides are equipped with
Outside extension side；The lower bent plate is opening up groove body, and two sides are equipped with outside extension side；The upper bent plate is curved under
The notch of plate corresponds to each other, and fastener passes through extension side between the two and connects fastening.
The directive wheel is the idler wheel of " u "-shaped notch, and axis body is secured to through idler wheel, axis body both ends be equipped with bearing block with
Fixed on the inside of the notch of upper bent plate, wherein the axis body of side stretches out upper bent plate and connect with encoder.
The friction pulley is cylindrical roller, and axis body runs through idler wheel, and axis body both ends are equipped in the notch of bearing block and lower bent plate
Side is fixed.
Adjusting gasket is equipped between the upper bent plate and the connection of lower bent plate, adjusting gasket is that the different multiple sheets of thickness are flat
Plate.
The control method of power station as described above door machine grasping beam trailing cable control device, includes the following steps：
Step1, installation, is connected and fixed frame using hinge, frame can swing；
Step2, threading, gap of the grasping beam cable across directive wheel and friction pulley is in contact with it friction；
Step3, the setting of door machine wirerope, wirerope one end are connect with grasping beam, and the other end is connect with reel, is set altogether on reel
Set compound steel cord；
Encoder code value is arranged in Step4, calculates the slope of every layer of wirerope height；
Step5, programming calculated slope value are written in the PLC program that main lifting altitude calculates；
Step6, cable height calibration, is arranged main raising encoder code value and cable encoder code value, by cable and leads
Rising tune is whole to sustained height, finds out the ratio of the two；
Step7 finds out cable height value with calculated code value ratio；
Step8 controls door machine steel wire by PLC control system in the PLC program of calculation formula write-in cable height calculating
It is synchronous when rope is with twisted and released of the cable.
A kind of power station door machine grasping beam trailing cable control device, it includes frame, directive wheel, friction pulley and encoder；
Directive wheel and friction pulley, which are located in hollow frame, to be connected thereto；Encoder is connect with directive wheel；Encoder is located at outside frame；It leads
It is located at the upside of friction pulley to wheel；Gap between directive wheel and friction pulley passes through cable；Between between directive wheel and friction pulley
Gap is adjustable.Structure is simple, by using directive wheel and friction pulley clamping cable are arranged in adjustable frame, passes through cable
Directive wheel and friction wheel from rotation are driven when folding and unfolding, encoder rotation is driven by directive wheel, by encoder by the displacement of cable
It is converted into electric signal, then converts the electrical signal to digital code, the initial position of the corresponding measurement of the show value of digital code and stop bit
It sets, realizes the straight-line displacement instant playback of cable, obtain the exact position of grasping beam trailing cable immediately, convenient for control grasping beam and electricity
Cable synchronous operation, cable are not easy stress and fracture.
In the preferred scheme, frame includes the lower bent plate connecting with upper bent plate；Upper bent plate be downward opening groove body, two
Side is equipped with outside extension side；Lower bent plate is opening up groove body, and two sides are equipped with outside extension side；Upper bent plate and lower bent plate
Notch correspond to each other, fastener passes through extension side between the two and connects fastening.Structure is simple, frame use by upper bent plate and
Lower bent plate is connected by way of fastener, easy for assemble or unload, convenient for safeguarding, and height adjustment is convenient, and adaptability is good.
In the preferred scheme, directive wheel is the idler wheel of " u "-shaped notch, and axis body is secured to through idler wheel, axis body both ends
Fixed on the inside of notch equipped with bearing block and upper bent plate, wherein the axis body of side stretches out upper bent plate and connect with encoder.Structure letter
Single, convenient for clamping cable, cable is not easy to misplace the directive wheel of " u "-shaped notch, when directive wheel rotation drives encoder measurement displacement
More precisely.
In the preferred scheme, friction pulley is cylindrical roller, and axis body runs through idler wheel, and it is curved under that axis body both ends are equipped with bearing block
It is fixed on the inside of the notch of plate.Structure is simple, and friction pulley and directive wheel cooperation clamping cable drive friction pulley when cable expansion and lead
It is rolled to wheel, cable is not easy abjection of skidding.
In the preferred scheme, adjusting gasket is equipped between upper bent plate and the connection of lower bent plate, adjusting gasket is that thickness is different
Multiple sheet plates.Structure is simple, can be by increasing or decreasing the thickness of gasket when cable specification size changes
It is adapted to adjust, cable and friction pulley and directive wheel is made to keep clamp position, when adjusting, loosening fasteners increase or decrease tune
Gasket is saved, is fastened after adjusting, it is easy to operate.
A kind of power station door machine grasping beam trailing cable control device, it includes frame, directive wheel, friction pulley and encoder,
Clamp cable by using directive wheel and friction pulley are arranged in adjustable frame, driven when passing through twisted and released of the cable directive wheel and
Friction wheel from rotation drives encoder rotation by directive wheel, the displacement of cable is converted into electric signal by encoder, then will be electric
Signal is converted into digital code, the initial position of the corresponding measurement of the show value of digital code and final position.The present invention overcomes raw waters
The problem of grasping beam cable stress asynchronous with cable in power station easily snaps off, with structure simply, it can be achieved that the straight-line displacement of cable
Instant playback, immediately obtain grasping beam trailing cable exact position, convenient for control grasping beam and cable synchronizing run, cable not vulnerable to
The characteristics of power fractures, this method are simply applicable in, and synchronous effect is good.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples：
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is Fig. 1 schematic front view.
In figure：Frame 1, upper bent plate 11, lower bent plate 12, directive wheel 2, friction pulley 3, encoder 4.
Specific embodiment
In FIG. 1 to FIG. 2, a kind of power station door machine grasping beam trailing cable control device, it include frame 1, directive wheel 2,
Friction pulley 3 and encoder 4；The directive wheel 2 and friction pulley 3, which is located in hollow frame 1, to be connected thereto；The encoder 4
It is connect with directive wheel 2；The encoder 4 is located at outside frame 1；The directive wheel 2 is located at the upside of friction pulley 3；The directive wheel 2
Gap between friction pulley 3 passes through cable；Gap between the directive wheel 2 and friction pulley 3 is adjustable.Structure is simple, leads to
It crosses using directive wheel 2 and the clamping cable of friction pulley 3 are arranged in adjustable frame 1, drives directive wheel 2 when passing through twisted and released of the cable
It is rotated with friction pulley 3, drives encoder 4 to rotate by directive wheel 2, the displacement of cable is converted by electric signal by encoder 4,
Digital code, the initial position of the corresponding measurement of the show value of digital code and final position are converted the electrical signal to again, realize cable
Straight-line displacement instant playback obtains the exact position of grasping beam trailing cable immediately, runs convenient for control grasping beam and cable synchronizing, electricity
Cable is not easy stress and fractures.
In preferred scheme, the frame 1 includes the lower bent plate 12 connecting with upper bent plate 11；The upper bent plate 11 is opening
Groove body directed downwardly, two sides are equipped with outside extension side；The lower bent plate 12 is opening up groove body, and two sides are equipped with outside prolong
Side；The notch of the upper bent plate 11 and lower bent plate 12 corresponds to each other, and fastener passes through extension side between the two and connects fastening.
Structure is simple, frame 1 using by upper bent plate 11 and lower bent plate 12 by fastener by the way of connect, it is easy for assemble or unload, be convenient for
Maintenance, height adjustment is convenient, and adaptability is good.
In preferred scheme, the directive wheel 2 is the idler wheel of " u "-shaped notch, and axis body is secured to through idler wheel, axis body two
End is equipped on the inside of the notch of bearing block and upper bent plate 11 and fixes, and wherein the axis body of side stretches out upper bent plate 11 and connect with encoder 4.
Structure is simple, and convenient for clamping cable, cable is not easy to misplace the directive wheel 2 of " u "-shaped notch, and the rotation of directive wheel 2 drives encoder 4 to survey
It is more accurate when amount displacement.
In preferred scheme, the friction pulley 3 is cylindrical roller, and axis body runs through idler wheel, axis body both ends be equipped with bearing block with
It is fixed on the inside of the notch of lower bent plate 12.Structure is simple, and friction pulley 3 and the cooperation clamping cable of directive wheel 2 drive when cable expansion and rub
It wipes wheel 3 and directive wheel 2 rolls, cable is not easy abjection of skidding.
In preferred scheme, adjusting gasket is equipped between the upper bent plate 11 and the connection of lower bent plate 12, adjusting gasket is thickness
Spend different multiple sheet plates.Structure is simple, can be by increasing or decreasing gasket when cable specification size changes
Thickness adapted to adjust, so that cable and friction pulley 3 and directive wheel 2 is kept clamp position, when adjusting, loosening fasteners increase
Or adjusting gasket is reduced, and it is fastened after adjusting, it is easy to operate.
The control method of power station as described above door machine grasping beam trailing cable control device, includes the following steps：
Step1, installation, is connected and fixed frame 1 using hinge, frame 1 can swing；
Step2, threading, gap of the grasping beam cable across directive wheel 2 and friction pulley 3 is in contact with it friction；
Step3, the setting of door machine wirerope, wirerope one end are connect with grasping beam, and the other end is connect with reel, is set altogether on reel
Set compound steel cord；If drum diameter is D, wirerope diameter d, compound steel cord, first layer steel wire rope loop are shared on reel
Number is n1 (n1 is that whole circle numbers of first layer subtract circle number remaining when main raising limit inferior), and second layer steel wire rope loop number is
N2, third layer steel wire rope loop number is n3, it can thus be concluded that the calculation formula of every layer of rope capacity is：
First layer rope capacity：L1=(D+d) × π × n1；
Second layer rope capacity：
Third layer rope capacity：
Encoder code value is arranged in Step4, calculates the slope of every layer of wirerope height；If encoder when main raising limes superiors
Code value is S4, and encoder code value is S3 when third layer to the second layer is changed layer, and encoder code value is when the second layer to first layer changes layer
S2, encoder code value is S1 when main raising limit inferior；
The slope of third layer height value：K3=(S4-S3)/L3；
The slope of second layer height value：K2=(S3-S2)/L2；
The slope of first layer height value：K1=(S2-S1)/L1；
By can be calculated, the slope of every layer of wirerope height value be followed successively by K1=4.639848, K2=4.478864,
K3=4.329036；
Step5, programming calculated slope value are written in the PLC program that main lifting altitude calculates；
Step6, cable height calibration, is arranged main raising encoder code value and cable encoder code value, by cable and leads
Rising tune is whole to sustained height, finds out the ratio of the two；If main raising encoder code value is S1, cable encoder code value is S2, will
Cable and main raising are adjusted to sustained height, every S1 and S2 of 2 meters of records, then find out the ratio of the two；
Step7 finds out cable height value with calculated code value ratio；Phase therewith is found out by the code value of cable encoder
Then corresponding main raising encoder code value substitutes into the formula that main lifting altitude calculates, the height value found out is cable height
Value；Cable encoder code value and main raising encoder code value are associated, are to reduce by motor speed, retarder deceleration
Than error caused by, drum diameter not square one；
If cable height value is H, H2 is height value when the main hoist rope second layer changes layer point, and H1 is main raising steel wire
Rope first layer changes height value when layer point, and B is constant, and K1, K2, K3 are main hoist rope first layer, the second layer, third respectively
Slope when layer；
Specific formula for calculation is as follows：
When cable height value is in the section of main raising third layer wirerope：
H=H2+K3 (S2/Ka)+B；
When cable height value is in the section of main raising second layer wirerope：
H=H1+K2 (S2/Ka)+B；
When cable height value is in the section of main raising second layer wirerope：
H=K1 (S2/Ka)+B；
Step8 controls door machine steel wire by PLC control system in the PLC program of calculation formula write-in cable height calculating
It is synchronous when rope is with twisted and released of the cable.
Power station as described above door machine grasping beam trailing cable control device, when installing and using, using in adjustable frame
Setting directive wheel 2 and friction pulley 3 clamp cable in frame 1, and when twisted and released of the cable drives directive wheel 2 and friction pulley 3 to rotate, and pass through guiding
Wheel 2 drives encoder 4 to rotate, and the displacement of cable is converted into electric signal by encoder 4, then converts the electrical signal to digital code, number
The initial position of the corresponding measurement of the show value of character code and final position, realize the straight-line displacement instant playback of cable, obtain immediately
The exact position of grasping beam trailing cable, runs convenient for control grasping beam and cable synchronizing, and cable is not easy stress and fractures.
Frame 1 using by upper bent plate 11 and lower bent plate 12 by fastener by the way of connect, it is easy for assemble or unload, convenient for dimension
Shield, height adjustment is convenient, and adaptability is good.
The directive wheel 2 of " u "-shaped notch is not easy to misplace convenient for clamping cable, cable, and the rotation of directive wheel 2 drives encoder 4 to survey
It is more accurate when amount displacement.
Friction pulley 3 and the cooperation clamping cable of directive wheel 2, drive when cable expansion friction pulley 3 and directive wheel 2 to roll, cable
It is not easy abjection of skidding.
When cable specification size changes, adaptation can be adjusted by increasing or decreasing the thickness of gasket, makes electricity
Cable and friction pulley 3 and directive wheel 2 keep clamp position, and when adjusting, loosening fasteners increase or decrease adjusting gasket, after adjusting
Fastening, it is easy to operate.
The above embodiments are only the preferred technical solution of the present invention, and are not construed as limitation of the invention, this Shen
Please in embodiment and embodiment in feature in the absence of conflict, can mutual any combination.Protection model of the invention
The technical solution that should be recorded with claim is enclosed, the equivalent replacement side of technical characteristic in the technical solution recorded including claim
Case is protection scope.Equivalent replacement i.e. within this range is improved, also within protection scope of the present invention.
Claims (6)
1. a kind of power station door machine grasping beam trailing cable control device, it is characterized in that：It includes frame（1）, directive wheel（2）, rub
Wipe wheel（3）And encoder（4）；The directive wheel（2）And friction pulley（3）Positioned at hollow frame（1）Inside it is connected thereto；It is described
Encoder（4）With directive wheel（2）Connection；The encoder（4）Positioned at frame（1）Outside；The directive wheel（2）Positioned at friction pulley
（3）Upside；The directive wheel（2）With friction pulley（3）Between gap pass through cable；The directive wheel（2）With friction pulley（3）
Between gap it is adjustable.
2. power station door machine grasping beam trailing cable control device according to claim 1, it is characterized in that：The frame（1）
Including with upper bent plate（11）The lower bent plate of connection（12）；The upper bent plate（11）For downward opening groove body, two sides are equipped with outside
Extension side；The lower bent plate（12）For opening up groove body, two sides are equipped with outside extension side；The upper bent plate（11）With
Lower bent plate（12）Notch correspond to each other, fastener passes through extension side between the two and connects fastening.
3. power station door machine grasping beam trailing cable control device according to claim 2, it is characterized in that：The directive wheel
（2）For the idler wheel of " u "-shaped notch, axis body is secured to through idler wheel, and axis body both ends are equipped with bearing block and upper bent plate（11）Slot
Fixed on the inside of mouthful, wherein the axis body of side stretches out upper bent plate（11）With encoder（4）Connection.
4. power station door machine grasping beam trailing cable control device according to claim 2, it is characterized in that：The friction pulley
（3）For cylindrical roller, axis body runs through idler wheel, and axis body both ends are equipped with bearing block and lower bent plate（12）Notch on the inside of it is fixed.
5. power station door machine grasping beam trailing cable control device according to claim 2, it is characterized in that：The upper bent plate
（11）With lower bent plate（12）Adjusting gasket is equipped between connection, adjusting gasket is the different multiple sheet plates of thickness.
6. the control method of described in any item power station door machine grasping beam trailing cable control devices according to claim 1 ~ 5,
It is characterized in that, includes the following steps：
Step1, installation, is connected and fixed frame using hinge（1）, frame（1）It can swing；
Step2, threading, grasping beam cable pass through directive wheel（2）And friction pulley（3）Between gap be in contact with it friction；
Step3, the setting of door machine wirerope, wirerope one end are connect with grasping beam, and the other end is connect with reel, is arranged three on reel altogether
Layer wirerope；
Encoder code value is arranged in Step4, calculates the slope of every layer of wirerope height；
Step5, programming calculated slope value are written in the PLC program that main lifting altitude calculates；
Step6, cable height calibration, is arranged main raising encoder code value and cable encoder code value, by cable and has led rising tune
The whole ratio to sustained height, both found out；
Step7 finds out cable height value with calculated code value ratio；
Step8, by calculation formula write-in cable height calculate PLC program in, by PLC control system control door machine wirerope with
It is synchronous when twisted and released of the cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810737435.2A CN108914889A (en) | 2018-07-06 | 2018-07-06 | Power station door machine grasping beam trailing cable control device and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810737435.2A CN108914889A (en) | 2018-07-06 | 2018-07-06 | Power station door machine grasping beam trailing cable control device and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108914889A true CN108914889A (en) | 2018-11-30 |
Family
ID=64424631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810737435.2A Pending CN108914889A (en) | 2018-07-06 | 2018-07-06 | Power station door machine grasping beam trailing cable control device and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108914889A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123768A (en) * | 2019-12-12 | 2020-05-08 | 国网浙江省电力有限公司紧水滩水力发电厂 | Dam crest portal crane auxiliary alignment system and method |
| CN113465646A (en) * | 2021-06-30 | 2021-10-01 | 中国长江电力股份有限公司 | Platform device and method capable of compensating different shafts of rotary encoder |
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| JPH08302655A (en) * | 1995-05-11 | 1996-11-19 | Kubota Corp | Water regulating door |
| CN1982188A (en) * | 2005-12-15 | 2007-06-20 | 王向辉 | Electric-cable reel frequency-variable synchronizer |
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| CN111123768A (en) * | 2019-12-12 | 2020-05-08 | 国网浙江省电力有限公司紧水滩水力发电厂 | Dam crest portal crane auxiliary alignment system and method |
| CN111123768B (en) * | 2019-12-12 | 2021-02-12 | 国网浙江省电力有限公司紧水滩水力发电厂 | Dam crest portal crane auxiliary alignment system and method |
| CN113465646A (en) * | 2021-06-30 | 2021-10-01 | 中国长江电力股份有限公司 | Platform device and method capable of compensating different shafts of rotary encoder |
| CN113465646B (en) * | 2021-06-30 | 2023-05-16 | 中国长江电力股份有限公司 | Platform device and method capable of compensating different axes of rotary encoder |
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Application publication date: 20181130 |