CN201805402U - Double-lifting-point hoist electrical synchronizer - Google Patents
Double-lifting-point hoist electrical synchronizer Download PDFInfo
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- CN201805402U CN201805402U CN2010205431985U CN201020543198U CN201805402U CN 201805402 U CN201805402 U CN 201805402U CN 2010205431985 U CN2010205431985 U CN 2010205431985U CN 201020543198 U CN201020543198 U CN 201020543198U CN 201805402 U CN201805402 U CN 201805402U
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Abstract
A double-lifting-point hoist electrical synchronizer comprises a variable frequency motor, wherein the variable frequency motor is connected with an input shaft of a reducer through a brake coupling device, an output shaft of the reducer is connected with a hoisting device through a connecting mechanism, an output end of a frequency converter is connected with the variable frequency motor electrically, the hoisting device is connected with one lifting point of a gate through a pulley block, a same set of hoisting device is connected to the other lifting point of the gate, an absolute coder is mounted on a low-speed shaft, an output signal of the absolute coder is connected with an input end of a programmable logic controller (PLC) electrically, and an output end of the PLC is connected with an input end of the frequency converter electrically. By adopting the electrical synchronous correction technique, automatic adjustment and control of double-lifting-point synchronization is realized during operation of a hoist, constant horizontal vertical operation of the gate in gate slots is guaranteed, jamming due to deviation is avoided, and safety and reliability in operation of the hoist equipment are guaranteed.
Description
Technical field
The utility model relates to the two Hanging Point Gate of Hydraulic and Hydro-Power Engineering and opens and closes control, the electric synchronizer of particularly a kind of double-hanging point headstock gear.
Background technology
The Hydraulic and Hydro-Power Engineering winch hoist is the hoisting machinery that is used to open and close gate, according to the two suspension centres of width branch and single hanging point headstock gear of gate.The double-hanging point headstock gear synchronisation control means mainly is to adopt mechanical axis synchronous.The double-hanging point headstock gear lifting mechanism adopts respectively and drives, and motor driving reducer, the rotation of exposed gear speed change rear drive reel by being wrapped in the folding and unfolding of steel wire rope on reel, movable pulley, fixed pulley and the equalizer pulley, driving gate and rise or descend.Perhaps by grabbing the connection lift gate of beam.In the middle of the two cover driving mechanisms mechanical synchronization axle is set.Because the elastic error of steel wire rope, during synchronous operation error that the alignment error of hoist and foozle etc. cause, at this moment can only shut down, the mechanical synchronization of dismantling axle is by regulating correction manually.
The utility model content
Technical problem to be solved in the utility model provides the electric synchronizer of a kind of double-hanging point headstock gear, can be implemented in the hoist running that to adjust the two suspension centres of control automatically synchronous.Guarantee gate level all the time in the running up and down in gate slot, can not guarantee that the hoist device security moves reliably because of deflection produces jam.
For solving the problems of the technologies described above, the technical scheme that the utility model adopted is: the electric synchronizer of a kind of double-hanging point headstock gear, comprise variable-frequency motor, variable-frequency motor is connected with the power shaft of reductor by the braking hitch bar, the output shaft of reductor is connected with winding plant by bindiny mechanism, the output of frequency converter is electrically connected with variable-frequency motor, winding plant is connected with a suspension centre of gate by assembly pulley, another suspension centre of gate is connected with the same device of a cover, on the axle of low speed, absolute value encoder is installed, the output signal of absolute value encoder is electrically connected with the input of PLC, and the output of PLC is electrically connected with the input of frequency converter.
Between variable-frequency motor and frequency converter, also be provided with incremental encoder.
The centre of grabbing beam at gate hydraulic pressure also is equipped with obliquity sensor, and the output signal of obliquity sensor is electrically connected with the input of PLC.
PLC also is electrically connected with the brake apparatus of braking in the hitch bar.
Described brake apparatus is the hydraulic push rod block brake.
The electric synchronizer of a kind of double-hanging point headstock gear that the utility model provides has overcome the mechanical synchronization method and need shut down the synchronous shortcoming of artificial adjustment, has adopted electric synchronous deviation correcting technology, is implemented in the hoist running that to adjust the two suspension centres of control automatically synchronous.Guarantee gate level all the time in the running up and down in gate slot, can not guarantee that the hoist device security moves reliably because of deflection produces jam.
During the device context commissioning test, when hoist two suspension centre lifting altitudes are inconsistent, by synchronous correction control, make two suspension centres reach electric synchronous operation, two suspension centres of hoist are in level all the time.Double-hanging point headstock gear is carried out electric Synchronization Control under the situation that does not have the mechanical synchronization axle be very necessary, and Synchronization Control running experiment result also is successful, and synchronous control accuracy meets design requirement fully.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the flow chart of the utility model method.
Embodiment
The electric synchronizer of a kind of double-hanging point headstock gear, comprise that variable-frequency motor 1, variable-frequency motor 1 are connected with the power shaft of reductor 4 by braking hitch bar 3, the output shaft of reductor 4 is connected with winding plant 7 by bindiny mechanism, winding plant 7 is connected with a suspension centre of gate 8 by assembly pulley, gate 8 another suspension centres are connected with the same device of a cover, the output of frequency converter 5 is electrically connected with variable-frequency motor 1, PLC10 is connected with frequency converter 5 by the Profibus-DP bus mode, with the rotating speed of control of conversion motor 1; Absolute value encoder 6 is installed on the reel slow-speed shaft, and the axle of described low speed is reductor 4 output shafts, the perhaps axle of reel, and the output signal of absolute value encoder 6 is electrically connected with the input of PLC10.
Between variable-frequency motor 1 and frequency converter 5, also be provided with incremental encoder 2.Set up incremental encoder 2, to guarantee the stability of equipment when the low cruise.
The centre of grabbing beam at gate 8 hydraulic pressure also is equipped with obliquity sensor 9, and the output signal of obliquity sensor 9 is electrically connected with the input of PLC10.
PLC10 also is electrically connected with the brake apparatus of braking in the hitch bar 3.Braking hitch bar 3 is a band brake wheel shaft coupling, brake apparatus is installed, i.e. the hydraulic push rod block brake on braked wheel.
A kind of electric synchronous method of said apparatus that makes may further comprise the steps:
1) establishing a device on the suspension centre is main frame, i.e. No. 1 reel, and the device on another suspension centre is a slave, i.e. No. 2 reels are with the zero clearing of No. 2 reel regulated values;
2) obtain X=1 reel height value according to absolute value encoder 6, Y=2 reel height value, computing Z=X-Y;
3) when | Z|≤set point, for example 10 o'clock, do not regulate; When | Z|＞set point 10, should be worth as No. 2 reel regulated values, by the rotating speed of PLC5 control of conversion motor 2, regulate No. 2 the reel height value;
By above-mentioned method, realize that double-hanging point headstock gear is electric synchronously.
The scheme of optimizing is, according to the output signal of obliquity sensor 9, contrasts predefined difference size, and is positive and negative, the output control signal.
The scheme of optimizing is, when the value of obtaining obliquity sensor 9 output signals exceeds predefined difference, then shield the signal of absolute value encoder 6, simultaneously with the zero clearing of No. 2 reel regulated values, import new height regulated value again, until the value of obliquity sensor 9 output signals in predefined difference range.Adopting obliquity sensor 9 is to obtain signal from terminal, realized closed-loop control completely, but, what should consider is, obliquity sensor 9 obtains signal from terminal, need the long time from signal to obtaining to adjust the result, governing speed is slower, the running environment of obliquity sensor 9 is more abominable simultaneously, cooperate the shortcoming between remedying mutually with absolute value encoder 6 FEEDBACK CONTROL of half-closed loop control, guarantee the stability and the fault-tolerance of system's operation, prolong the useful life of equipment, avoid misoperation occurring because of the reason of control system.
The scheme of optimizing is that obliquity sensor 9 is enabled | set point |＞| Z|＞obliquity sensor 9 is stopped using | set point |.By the set point of otherness, can avoid superposing control occurring and the system oscillation that causes.
Embodiment 1:
10 cover 2 * 4000kN fixation winding type hoists are equipped with in certain hydroelectric station, and the horizontal error of this lifting gate must not require greater than 20mm 50 meters of lifts.
The control of 2 * 4000KN hoist is the control mode that adopts " touch-screen+PLC+ frequency control ".Frequency converter is selected the 2 day intrinsic safety river CIMR-G7A110 of company series of products for use, and PLC selects Siemens S7-300 for use, and touch-screen is selected TP277-10 for use, and incremental encoder 2 is selected 2 Tai Tuerke EH88P1024 for use, and absolute value encoder 6 is selected 2 German Heidenhain ROQ425 for use.The ROQ425 absolute value encoder, resolution 8192 line/circles, range 4096 circles, output SSI interface, operating voltage 5-30V.
Check in from mechanical calculations, the roller steel wire rope twines and totally 53.8 encloses corresponding 50 meters,
Drum diameter φ=1.7m, every circle length L=2 π R=π φ=3.14 * 1.7=5.338 m,
Resolution=5.338/8192=0.00065 m=0.65 mm.
Be accuracy can satisfy horizontal error fully must not be greater than the requirement of 20mm, during adjusted in concert, setting No. 1 reel is main frame, No. 2 reels are slave, slave is followed main frame and is done dynamically to adjust.Gate is in hoisting, the feedback that absolute value encoder ROQ425 measures as the lifting mechanism height, its outputting data signals is sent into the position module SM338 of PLC, carry out data processing by position module, obtain the synchronism deviation value, according to predefined difference size for example: | Z|=10, setting, positive and negative on touch-screen, the output control signal, control of conversion device U2 rectifies a deviation synchronously, makes two suspension centres of gate be in synchronous regime all the time.
These routine characteristics are that adjusting, correction speed are fast, but can only eliminate the inconsistent error that causes of motor speed, are applicable to that lift is not high, and the lifting gate does not adopt hydraulic pressure to grab the beam ways of connecting.
Embodiment 2:
Certain hydropower station tail water surge chamber is equipped with 1 cover 2 * 2000kN unidirectional portal crane, requires the horizontal error must not be greater than 20mm, 98 meters of lifts.
The control of the unidirectional portal crane of 2 * 2000kN is the control mode that adopts " touch-screen+PLC+ frequency control ".Frequency converter is selected 2 6SE70 of Siemens Company series of products for use, and PLC selects Siemens S7-300 for use, and touch-screen is selected TP277-10 for use, and incremental encoder is selected 2 Tai Tuerke EH88P1024 for use, and absolute value encoder is selected 2 German P+F AVM58 of company for use.
The lifting gate adopts hydraulic pressure to grab the beam ways of connecting, and 1 servo-type obliquity sensor DAS-15/V is housed in the middle of the hydraulic automatic grabbing beam.
The DAS-15/V double-shaft tilt angle sensor.Type: double-shaft tilt angle sensor; Range: ± 15 °, accuracy: 0.01; Output: ratio, pulse-width modulation; Power supply: 5-15Vdc; Working temperature :-30 ℃ ~ 65 ℃; Be electrically connected: plate carries formula.Characteristics: twin shaft, difunctional, high performance-price ratio, high accuracy product.
The width of the hydraulic automatic grabbing beam of gate is 11190mm, owing to obliquity sensor 9 is contained in middle.So the precision of horizontal adjustment is: X=tan0.01*11190/2=0.9765mm.Be accuracy can satisfy horizontal error fully must not be greater than the requirement of 20mm.
The major loop of this scheme, the adjusted in concert principle is identical with scheme 1.Different is signal is grabbed servo-type obliquity sensor on the beam and is replaced being contained in absolute value encoder on the reel by being contained in hydraulic pressure.
The servo-type obliquity sensor and the pre-process circuit that in the hydraulic automatic grabbing beam, are equipped with, have higher sensitivity and Measurement Resolution, by being contained in the scm managing system in the auto clawing beam seal box, on-site signal is gathered, handled, after directly the RS485 communication signal of outputting standard supplies the PLC acquisition process then, obtain the synchronism deviation value, according to the difference size of on touch-screen, setting in advance, positive and negative, the output control signal, control of conversion device U2 rectifies a deviation synchronously, makes two suspension centres of hoist be in synchronous regime all the time.
The technical scheme that this is routine, can eliminate speed error of motor, steel wire rope elastic error, reel mismachining tolerance, alignment error, systematic error etc., rectifying effect is reliable synchronously, what but obliquity sensor 9 was gathered is terminal data, to having relatively high expectations of system parameter setting, the overshoot setting of mistake can cause system oscillation and lower overshoot can reduce the effect of real-time deviation correcting, causes between the result of data acquisition and correction time-delay longer; The installation site running environment of obliquity sensor 9 is more abominable simultaneously, damages as obliquity sensor 9 and then can cause system crash or shutdown.
Embodiment 3:
In control system, enable the data acquisition of absolute value encoder 6 and obliquity sensor 9 simultaneously, startup regulated value to absolute value encoder 6 is set at | Z|=10, the absolute value of regulating for the startup of obliquity sensor 9 is set at 18, and the absolute value of the inactive adjusting of obliquity sensor 9 is set at 5, system adopts absolute value encoder 6 to regulate at ordinary times, to obtain governing speed faster, if the adjusting of absolute value encoder 6 is transfinited, for example because speed error of motor, the steel wire rope elastic error, the reel mismachining tolerance, alignment error, systematic error, the perhaps reason of their accumulation, cause actual error to reach regulated value and set 18, (signal of absolute value encoder 6 collections of this moment is still in adjustable range), the acquired signal that starts obliquity sensor 9 is as regulating foundation, shield the acquired signal of absolute value encoder 6 simultaneously, and will regulate the parameter zero clearing, calculating the regulated value that makes new advances according to the acquired signal that starts obliquity sensor 9 regulates, reach the inactive value 5 of setting until the acquired signal of obliquity sensor 9, thereby the acquired signal of obliquity sensor 9 is stopped using, transfer to according to the acquired signal of absolute value encoder 6 and regulate.
Switching between absolute value encoder 6 and the obliquity sensor 9 is counted and timing, if frequently switch at short notice, then prompting need be carried out system overhaul.
The technical scheme that this is routine combines half-closed loop control fast and closed-loop control advantage accurately, and the switching of two kinds of control modes has also increased the fault-tolerance of system, has improved stability and reliability that system moves.
Claims (5)
1. electric synchronizer of double-hanging point headstock gear, comprise variable-frequency motor (1), it is characterized in that: variable-frequency motor (1) is connected with the power shaft of reductor (4) by braking hitch bar (3), the output shaft of reductor (4) is connected with winding plant (7) by bindiny mechanism, the output of frequency converter (5) is electrically connected with variable-frequency motor (1), winding plant (7) is connected with a suspension centre of gate (8) by assembly pulley, another suspension centre of gate (8) is connected with the same device of a cover, on the axle of low speed, absolute value encoder (6) is installed, the output signal and PLC(10 of absolute value encoder (6)) input be electrically connected, output PLC(10) is electrically connected with the input of frequency converter (5).
2. the electric synchronizer of a kind of double-hanging point headstock gear according to claim 1 is characterized in that: also be provided with incremental encoder (2) between variable-frequency motor (1) and the frequency converter (5).
3. the electric synchronizer of a kind of double-hanging point headstock gear according to claim 1, it is characterized in that: the centre of grabbing beam at gate (8) hydraulic pressure also is equipped with obliquity sensor (9), the output signal and PLC(10 of obliquity sensor (9)) input be electrically connected.
4. the electric synchronizer of a kind of double-hanging point headstock gear according to claim 1 is characterized in that: PLC(10) also be electrically connected with brake apparatus in braking hitch bar (3).
5. the electric synchronizer of a kind of double-hanging point headstock gear according to claim 4 is characterized in that: described brake apparatus is the hydraulic push rod block brake.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205431985U CN201805402U (en) | 2010-09-27 | 2010-09-27 | Double-lifting-point hoist electrical synchronizer |
| CN2010102924985A CN101949469B (en) | 2010-09-27 | 2010-09-27 | Electrical synchronization method and device of hoist with two hoisting points |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205431985U CN201805402U (en) | 2010-09-27 | 2010-09-27 | Double-lifting-point hoist electrical synchronizer |
| CN2010102924985A CN101949469B (en) | 2010-09-27 | 2010-09-27 | Electrical synchronization method and device of hoist with two hoisting points |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201805402U true CN201805402U (en) | 2011-04-20 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102924985A Expired - Fee Related CN101949469B (en) | 2010-09-27 | 2010-09-27 | Electrical synchronization method and device of hoist with two hoisting points |
| CN2010205431985U Expired - Fee Related CN201805402U (en) | 2010-09-27 | 2010-09-27 | Double-lifting-point hoist electrical synchronizer |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102924985A Expired - Fee Related CN101949469B (en) | 2010-09-27 | 2010-09-27 | Electrical synchronization method and device of hoist with two hoisting points |
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| CN (2) | CN101949469B (en) |
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| CN101949469A (en) * | 2010-09-27 | 2011-01-19 | 中国葛洲坝集团机械船舶有限公司 | Electrical synchronized method and device of hoist with two hoisting points |
| WO2012092768A1 (en) * | 2011-01-05 | 2012-07-12 | 长沙中联重工科技发展股份有限公司 | Tower crane, lifting mechanism thereof, and method for leveling lifting mechanism |
| CN104965480A (en) * | 2015-06-30 | 2015-10-07 | 沈阳宝通门业有限公司 | Flexible steel rope gate electric control system and method |
| CN105603945A (en) * | 2016-03-29 | 2016-05-25 | 葛洲坝机械工业有限公司 | Well type input/output water tower gate synchronous operation device and control method |
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| JPH02266885A (en) * | 1989-04-06 | 1990-10-31 | Kawasaki Steel Corp | Method of controlling speed of motor for rolling mill |
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| CN101949469B (en) * | 2010-09-27 | 2012-09-12 | 中国葛洲坝集团机械船舶有限公司 | Electrical synchronization method and device of hoist with two hoisting points |
-
2010
- 2010-09-27 CN CN2010102924985A patent/CN101949469B/en not_active Expired - Fee Related
- 2010-09-27 CN CN2010205431985U patent/CN201805402U/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949469A (en) * | 2010-09-27 | 2011-01-19 | 中国葛洲坝集团机械船舶有限公司 | Electrical synchronized method and device of hoist with two hoisting points |
| CN101949469B (en) * | 2010-09-27 | 2012-09-12 | 中国葛洲坝集团机械船舶有限公司 | Electrical synchronization method and device of hoist with two hoisting points |
| WO2012092768A1 (en) * | 2011-01-05 | 2012-07-12 | 长沙中联重工科技发展股份有限公司 | Tower crane, lifting mechanism thereof, and method for leveling lifting mechanism |
| CN104965480A (en) * | 2015-06-30 | 2015-10-07 | 沈阳宝通门业有限公司 | Flexible steel rope gate electric control system and method |
| CN105603945A (en) * | 2016-03-29 | 2016-05-25 | 葛洲坝机械工业有限公司 | Well type input/output water tower gate synchronous operation device and control method |
| CN108829019A (en) * | 2018-09-13 | 2018-11-16 | 甘肃顺通机电设备安装有限公司 | A kind of intelligent integral sluice control system |
| CN110203829A (en) * | 2019-06-20 | 2019-09-06 | 中铁九桥工程有限公司 | A kind of three purlin synchronous ascending control systems |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101949469B (en) | 2012-09-12 |
| CN101949469A (en) | 2011-01-19 |
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Legal Events
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Owner name: GEZHOUBA MACHINERY INDUSTRY CO., LTD. Free format text: FORMER OWNER: GEZHOUBA GROUP MACHINERY + SHIP CO., LTD. OF CHINA Effective date: 20150603 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150603 Address after: 18 No. 443007 Hubei city of Yichang province located in Xiaoting District Road Patentee after: Ge Zhou Ba mechanical industry Co., Ltd Address before: 18 No. 443007 Hubei city in Yichang province Xiao Ting Road Patentee before: Machinery & Ship Co., Ltd., China Gezhouba Group |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20170927 |
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| CF01 | Termination of patent right due to non-payment of annual fee |