CN106516925A - Elevator balance coefficient detector - Google Patents
Elevator balance coefficient detector Download PDFInfo
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- CN106516925A CN106516925A CN201611180362.9A CN201611180362A CN106516925A CN 106516925 A CN106516925 A CN 106516925A CN 201611180362 A CN201611180362 A CN 201611180362A CN 106516925 A CN106516925 A CN 106516925A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0037—Performance analysers
Abstract
An elevator balance coefficient detector is composed of a main machine, a lift car displacement sensor, a pincer-like current sensor, a voltage signal collecting line and a power source adaptor. The main machine comprises a frequency-variable power detection module, a displacement measurement module, a microcomputer system module, a liquid crystal display screen, a battery and a power source management module. The detector detects the motor power and lift car displacement of an elevator in real time, accurately obtains the motor power and lift car speed when a lift car is in the stroke middle point position by marking data time to power data and displacement data, and works out the balance coefficient value according to the electric energy-mechanical energy conversion relationship in the operation process of a traction type elevator. As for the balance coefficients of a gear-free traction elevator and a worm and worm wheel traction elevator, a unified calculation formula is adopted. The displacement sensor is fixed with a universal magnetometer seat and spring structure, and automatic measurement of the displacement of the lift car is realized. A wireless communication function exists between the displacement sensor and the main machine, and the elevator balance coefficient detector is applicable to detection of the balance coefficient of a machine-room-free elevator.
Description
Technical field
The present invention relates to a kind of detecting instrument, it is more particularly related to a kind of test tractive driving formula elevator
The special testing instrument of coefficient of balance.
Background technology
Coefficient of balance is a highly important index of tractive driving formula elevator, coefficient of balance correctness direct relation
To the safe operation of elevator.GB7588-2003《Elevator is manufactured and installs safety standard》Definition to coefficient of balance is：" balance
The amount that coefficient, i.e. nominal load capacity and car mass are balanced by counterweight or balance weight.”
GB/T10059-2009《Elevator test method》With TSG T7001-2009《Elevator surveillance is checked and is advised with periodic inspection
Then traction and forcibly driving elevator》In to the method for testing of balance coefficient of elevator be：Car loads nominal load capacity respectively
30%th, 40%, 45%, 50%, 60% makees upper and lower whole operation, when car and counterweight run to same level position, record
The current value of motor, draws electric current-load curve, determines coefficient of balance with the intersection point of upper and lower operation curve.This method passes through
Elevator multistage loadings run, record motor current value, draw the detection method that electric current-load chart determines coefficient of balance, excellent
Point is to use general detector device facility, technology maturation；Have the disadvantage that needs are carried and device counterweight, the testing time is long, compares
Waste time and energy.
China Patent Publication No. CN102674103A, publication date September in 2012 19 days, it is entitled " balance coefficient of elevator
Detection method ", disclose it is a kind of by measure elevator no-load it is upper and lower run to car and counterweight be in same level position when
Car speed and motor power, according to energy transmission relation in elevator operation, founding mathematical models, are calculated elevator and put down
Weighing apparatus coefficient value.The method measures more convenient without the need for loading, power and velocity field, compares traditional loading-current curve method,
Measurement efficiency is obviously improved.The method gradually obtains industry accreditation for nearly 2 years, but realizes the special testing instrument of the method at present
It is also fewer.
China Patent Publication No. CN102674102A, publication date September in 2012 19 days, it is entitled that " balance coefficient of elevator is examined
Survey instrument ", a kind of special detector for realizing above-mentioned detection method is disclosed, the detector is by car speed measurement apparatus, electric energy
Measurement apparatus and Measurement data-processing system composition, steel wire rope position of the car speed measurement apparatus using optical mouse chip component
Measuring system or tachoscope speed measuring device.The detector calculates the formula of balance coefficient of elevator K：
In the patent, η is defined as transmission efficiency, is the fortune of car idle condition motor magnitude of power and elevator load
Coefficient between row magnitude of power, η are obtained by following two sides：
(1) to gearless towed elevator, calculated with following formula：
In above formula, Ns, Nx are that car is upper and lower respectively to be run to the power with motor during counterweight same level position,
Vs, Vx are that car is upper and lower respectively to be run to the speed with car during counterweight same level position, and Q is elevator nominal load capacity, g
For acceleration of gravity.
(2) to worm and gear towed elevator, by " selecting sample ladder detection, it is established that the employing worm gear of conventional brand/specification
The technical scheme of the elevator of worm screw traction machine, up transmission efficiency data base " is implemented, traction during detection according to tested elevator
Design parameter, from the corresponding η numerical value of database lookup.
The weak point of this coefficient of balance detector is：(1) device for measurement of electrical energy of the instrument, velocity measuring device and
Measurement data-processing system is three independently of one another separate parts, and during on-the-spot test, the installation of device, wiring are relatively complicated；(2)
The instrument uses different computational methods, gesture in test parameter to the coefficient of balance of gearless towed elevator and worm and gear elevator
Necessarily increase test specimens ladder type option, bring tester to falsely drop while increasing cumbersome property and select so as to cause test
As a result inaccurate possibility；(3) the conventional brand set up/specification worm and gear ascending for elevator transmission efficiency data base's is comprehensive
Property and accuracy leave a question open, if database data is inaccurate, it is inaccurate to will result directly in coefficient of balance test result, and for number
According to the brand/sized elevators not having in storehouse, it is impossible to measure；(4) the car speed measurement apparatus of the instrument have been used " first
Enter " optical mouse chip component, but the component be mainly used in measure in specific materials plane mobile object displacement, be used for
High-acruracy survey is carried out to the circular steel wire rope surface of on-plane surface, Non-smooth surface and technically there is larger difficulty, be non-ripe
E measurement technology；(5) use elevator velometer EC-2100 as cage operation velocity measuring device in the instrument, this kind of device can only
Hand-held measurement, in test process, needs the whole hand-held velometer of tester to be close on a steel cord, has both increased tester
Working strength, it is also difficult to ensure the accuracy of test data, because hand-held velometer may of short duration disengaging steel in test process
Cord；(6) connected by data wire between the car speed measurement apparatus and Measurement data-processing system of the instrument, measure nothing
During machine room elevator, wiring is extremely difficult, because during measurement machine-roomless lift, car speed measurement apparatus are can be only installed in hoistway,
Wiring is needed from hoistway through outside hoistway, and machine-roomless lift hoistway generally will not specially be preset and can pass through opening for data wire
Mouthful.
The content of the invention
The purpose of the present invention is to overcome the deficiencies in the prior art, there is provided the accurate elevator of the easy to operate, test result of one kind
Coefficient of balance detector.
The technical scheme is that：
Detector for elevator balance coefficient is adopted by main frame, lift car displacement transducer, pincerlike current sensor, voltage signal
Line concentration and power supply adaptor composition, main frame include at least following external-connected port：Two current signal external-connected ports, three voltage letters
Number external-connected port, a displacement signal external-connected port and a charging port.Lift car displacement transducer be placed in car or
On the mechanical transmission member of cage operation, and the displacement signal external connection end of main frame is connected to by wireless communication module or data wire
Mouthful；Clamp on elevator driving host motor power-supply wire, outside another current signal for terminating to main frame pincerlike current sensor one end
Port is connect, voltage signal acquisition line one end is connected on elevator driving host motor power-supply wire, another voltage for terminating to main frame
External-connected port；Power supply adaptor output is connected to the charging port of main frame.
Main frame is mainly by frequency-converter power measurement module, displacement measurement module, microsystem module, LCDs, battery
Constitute with power management module, wherein, frequency-converter power measurement module and displacement measurement module respectively by data communication bus with
Microsystem module is connected；LCDs are connected with microsystem module liquid crystal drive interface；Power management module electric discharge is defeated
Enter end to be connected with battery, discharge outfan and the power supply of frequency-converter power measurement module, displacement measurement module and microsystem module
Port is connected, and power management module charging input end is connected with the charging port of main frame, and charging outfan is connected with battery.
To gearless towed elevator and worm and gear towed elevator, unified below equation calculates balance coefficient of elevator：
Wherein：
The coefficient of balance of the tested elevators of q；
The performance number of elevator driving host motor, unit W when Ps zero load cars go upward to midstroke；
The performance number of elevator driving host motor, unit W when Px zero load cars come downwards to midstroke；
The velocity amplitude of car, m/s when Vs zero load cars go upward to midstroke；
The velocity amplitude of car, m/s when Vx zero load cars come downwards to midstroke；
Q nominal load capacities, kg, tested elevator known parameters are manually entered before test；
G acceleration of gravitys, take 9.81m/s2；
K correction factors, default value 1.
Instrument is provided with the modification interface of correction factor k, carries out in order to the pairing to pincerlike current sensor and main frame
Calibration, it is ensured that the accuracy of Instrumental results.
Microsystem module reads the data of frequency-converter power measurement module and displacement measurement module, using stamping to data
The method at " data moment " obtains the active power and cage operation of car elevator driving host motor in stroke point midway
Speed.
The car displacement transducer of car displacement is detected using increasing by measuring traction steel-cable or governor rope displacement
Amount formula rotary encoder, car displacement transducer are installed with universal magnetic gauge stand and are fixed, and universal magnetic gauge stand adsorbs in measurement point
On neighbouring girder steel or steelframe, connected with spring between universal magnetic gauge stand and car displacement transducer.
Car displacement transducer can be connected with data wire with main frame, it is also possible to by wireless data communication module and main frame
Connection.
Power supply adaptor is only used when charging to cell host, and instrument need not operationally connect power supply adaptor.
Present invention advantage compared with prior art is：
(1) instrument is only divided into by main frame, three part of sensor and power supply adaptor, at power detection, displacement detecting, data
The functions such as reason, liquid crystal display are integrated in main frame, and instrument overall structure is simple, and field connection is easy to operate.
(2) the unified formula of instrument is calculated the balance system of gearless towed elevator and worm and gear towed elevator
Number, testing result are more accurate.
(3) the incremental rotary encoder technology of maturation is used as wire rope displacement detection sensor, sensor accuracy
High, stable performance.
(4) displacement transducer adds spring structure to fix using universal magnetic gauge stand, and test process is without the need for hand-held, test process
Easily, it is to avoid the measurement error of the improper introducings of human users, displacement detecting result is more accurate compared to handheld device.
(5) wireless communication function between displacement transducer and main frame overcomes the inconvenience being connected using data wire, makes this
Instrument is better adapted to the coefficient of balance detection of machine-roomless lift.
(6) in instrument software processing procedure, by giving displacement data and power data while the side of labelling " data moment "
Formula recognizing the position of cage operation to midstroke, so as to accurately obtain sedan-chair when car is in same level position with counterweight
The power of the speed and motor in railway carriage or compartment.
(7) instrument is provided with the modification interface of correction factor k, in order to enter to the pairing of pincerlike current sensor and main frame
Row calibration, it is ensured that the accuracy of Instrumental results.
(8) the built-in cycle charge-discharge battery of instrument, test process can be powered without the need for extrapolation power supply, and onsite application is convenient.
Description of the drawings
Fig. 1 is embodiments of the invention structural representation.
Fig. 2 is the internal structure schematic diagram of main frame in the embodiment of the present invention.
In figure：1- elevator control cabinets, 2- motor power-supply wires, 3- elevator driving host, 4- elevator dragging wire ropes, 5- elevators
Counterweight, 6- lift cars, 7- car displacement transducers, 8- magnetic rollers, 9- springs, 10- universal magnetic gauge stands, 11- channel radios
News module I, 12- wireless communication module II, 13- pincer current sensor I, 14- pincer current sensor II, 15- main frames, 16-
LCDs, 17- displacement signal external-connected ports, 18- current signal external-connected port A1,19- current signal external-connected port A2,
20- voltage signal acquisition line I, 21- voltage signal acquisition line II, 22- voltage signal acquisition line III, 23- voltage signal external connection ends
Mouth V1,24- voltage signal external-connected port V2,25- voltage signal external-connected port V3,26- charging ports, 27- power supply adaptors,
28- microsystem modules, 29- microsystem modular power sources port, 30- microsystem module liquid crystal drive interfaces, 31- microcomputers system
System module data PORT COM I, 32- microsystem module data PORT COM II, 33- frequency-converter power measurement modules, 34- frequency conversions
Power measurement module data communication port, 35- frequency-converter power measurement module power ports, 36- frequency-converter power measurement module voltages
Signal, current signal input mouth, 37- displacement measurement modules, 38- displacement measurement module displacement signal input ports, 39- displacements
Measurement module data communication port, 40- displacement measurement modular power sources port, 41- batteries, 42- power management modules, 43- power supplys
Management module charging output port, 44- power management modules electric discharge input port, 45- power management modules electric discharge output port,
46- power management module charging input end mouths.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples：
In Fig. 1 of embodiment, the magnetic rollers 8 of car displacement transducer 7 adsorb on elevator dragging wire rope 4, electricity
Terraced traction steel-cable 4 is suspended on the traction sheave of elevator driving host 3, and two ends are ined succession Elevator weight sensor 5 and lift car 6 respectively,
The displacement of elevator dragging wire rope 4 and linear velocity are on year-on-year basis in displacement and the speed of the movement of lift car 6, car displacement transducer 7
It is fixed on universal magnetic gauge stand 10 by spring 9, universal magnetic gauge stand 10 adsorbs on the girder steel or steelframe near measurement point.
7 external wireless communication module I 11 of car displacement transducer, the displacement signal that wireless communication module II 12 is connected to main frame 15 are external
Port 17, is realized between car displacement transducer 7 and main frame 15 by wireless communication module I 11 and wireless communication module II 12
Wireless telecommunications.Pincerlike current sensor I 13 and 14 pincerlike end pincers of pincerlike current sensor II are being exported from elevator control cabinet 1
To on the motor power-supply wire 2 of elevator driving host 3, the sense of current of pincerlike current sensor points to motor from switch board, another
End is coupled with current signal external-connected port A1 18 and current signal external-connected port A2 19 on 15 panel of main frame；Voltage is believed
Number gathering line I 20, voltage signal acquisition line II 21,22 1 ends of voltage signal acquisition line III are connected on motor power-supply wire 2, separately
Voltage signal external-connected port V1 23, voltage signal external-connected port V2 24 and the voltage signal that one end is coupled with main frame 15 is external
On port V3 25；LCDs 16 are fixed on the top surface of main frame 15.Charging end of the output of power supply adaptor 27 to main frame 15
Mouth 26, power supply adaptor are only used when charging to cell host, and instrument can operationally connect power supply adaptor.
7 built-in incremental rotary encoder of car displacement transducer, elevator dragging wire rope 4 drive magnetic rollers when moving
8 rotate, and magnetic rollers 8 drive the axle of incremental rotary encoder to rotate, so that rotary encoder output represents steel wire rope shifting
The pulse signal of dynamic displacement.
In Fig. 2 of embodiment, frequency-converter power measurement module 33, displacement measurement module 37, microsystem module 28, battery
41 and power management module 42 be integrated in inside main frame 15.The electric discharge input 44 of power management module 42 and 41 phase of battery
Even, discharge the power port 35 respectively with power measurement module 33 of outfan 45, displacement measurement module 37 power port 40 with
The charging and power port 29 of microsystem module 28 connects, in power management module charging input end 46 and 15 panel of main frame
Port 26 is connected, and charging outfan 43 is connected with battery 41.Frequency-converter power measurement module data communication port 34 is logical by data
News bus is connected with microsystem module data PORT COM II 32, and frequency-converter power measurement module voltage signal, current signal are defeated
Inbound port 36 respectively with current signal external-connected port A1 18, current signal external-connected port A2 19, voltage signal external-connected port V1
23rd, voltage signal external-connected port V2 24 and voltage signal external-connected port V3 25 connect.Displacement measurement module data communication terminal
Mouth 39 is connected with microsystem module data PORT COM I 31 by data communication bus, and displacement measurement module displacement signal is defeated
Inbound port 38 is connected with displacement signal external-connected port 17.LCDs 16 are by data communication bus and microsystem module liquid
Brilliant driving interface 30 connects.
Instrument software processing procedure is as follows：
(1) unloaded car is parked in into upstation, testing staff clicks on the START button in LCDs, triggers microcomputer
System module starts to read and record the power data of frequency-converter power measurement module and displacement measurement mould every Fixed Time Interval
The car displacement data of block, testing staff make car from upstation straight to lower end station, and after elevator stops, testing staff clicks on liquid
" stopping " button on brilliant screen, microsystem module stop reading data, and the data to recording are analyzed calculating, obtain electricity
The active-power P x and cage operation speed Vx of car elevator driving host motor in stroke point midway when ladder is descending；
(2) testing staff again taps on the START button in LCDs, triggering microsystem module start every
Fixed Time Interval reads and records the car displacement data of the power data of frequency-converter power measurement module and displacement measurement module,
Testing staff makes car stand erectly from lower end to sail to upstation again, and after elevator stops, testing staff " stopping " clicking on liquid crystal display screen presses
Button, microsystem module stop reading data, and the data to recording are analyzed calculating, and when obtaining ascending for elevator, car is expert at
The active-power P s and cage operation speed Vs of elevator driving host motor during journey point midway；
(3) microsystem module formula 3 is calculated balance coefficient of elevator q.
Microsystem module synchronization reads the data of frequency-converter power measurement module and displacement measurement module, using to power number
Car elevator driving host motor in stroke point midway is obtained according to method with displacement data labelling " data moment " has
Work(power and cage operation speed, detailed process are as follows：
(1), after instrument start, frequency-converter power measurement module measures the active power of elevator driving host motor in real time and deposits
In Power data register, Power data register only stores newest active power once for storage, and the Refresh Data cycle is Tp；
Car shift value that displacement measurement module is given at interval of Ts time sampling car displacement transducers is simultaneously stored in displacement data and posts
In storage, the displacement data in displacement data depositor is cumulative data, i.e., newest displacement data once posted with displacement data
As data storage after former data value addition in storage, after the data in displacement data depositor are read, just will
The numerical value of displacement data depositor resets；
(2), after testing staff clicks on the START button in LCDs, START button is swashed by microsystem module
Moment living is labeled as power and bit shift measurement lock in time starting point, and while sends to power measurement module and displacement measurement module
Data requesting instructions, after power measurement module receives the data requesting instructions of microsystem module, at interval of the T1p times to microcomputer
System module sends the power data in a Power data register, T1p ＞ Tp；Displacement measurement module receives microsystem mould
After the data requesting instructions of block, the displacement in a displacement data depositor is sent at interval of the T1s times to microsystem module
Data, T1s ＞ Ts.After testing staff clicks on " stopping " button on liquid crystal display screen, microsystem module " will stop " by button activation
Moment is labeled as power and bit shift measurement lock in time terminal, and stops while sending to power measurement module and displacement measurement module
Only data is activation instruction, power measurement module and displacement measurement module stop sending data to microsystem module.Microsystem
" data moment " on each power data and displacement data labelling for receiving is stored in memory by module afterwards, that is, store
Each group of data band has temporal information, specifically such as [(T1p, P1), (2T1p, P2), (3T1p, P3) ... ..., (nT1p, Pn))],
[(T1s, S1), (2T1s, S2), (3T1s, S3) ... ..., (mT1s, Sm))], wherein, Pn is the power that the nT1p moment reads
Data, Sm are the displacement data that the mT1s moment reads；
(3) all displacement data S1, S2 ... Sm of storage are added, obtain cage operation total kilometres ∑ S, the one of ∑ S
Half i.e. ∑ S/2 is the point midway of car stroke, re-registrates shifting data S1, S2 ... Sm and is added up one by one, position of adding up
Shifting value is designated as ∑ Sk, and after the displacement data that often adds up ∑ Sk is compared with ∑ S/2, when ∑ Sk is equal to or more than ∑ S/2
When, stopping adding up, " the data moment " of displacement data Sk now is kT1s, and the kT1s moment, as cage operation was to midstroke
Time Tz, Sk/T1s be car midstroke position when car speed；
(4) in the power data [(T1p, P1), (2T1p, P2), (3T1p, P3) ... ..., (nT1p, Pn))] that stores
" data moment ", T1p, 2T1p ... nT1p was compared with Tz one by one, when iT1p is equal to or more than Tz, stopped comparing, now
The corresponding power data Pi of " data moment " iT1p be car midstroke power of motor value.
Microsystem module obtains car elevator driving host in stroke point midway by above step 1 to step 4
The active power and cage operation speed of motor.
To gearless towed elevator and worm and gear towed elevator, unified formula 3 calculates balance coefficient of elevator, and formula is pushed away
Lead process as follows：
When elevator no-load is up, to anharmonic ratio car weight, motor is in generating state, and mechanical energy is converted into electric energy, according to energy
Conservation law is measured, now mechanical energy with electric energy transformational relation is：
|PS|=qQgVS- Δ S (formula 4)
When elevator no-load is descending, to anharmonic ratio car weight, motor is in motoring condition, and electric energy is converted into mechanical energy, according to energy
Conservation law is measured, now electric energy with the transformational relation of mechanical energy is：
|PX|=qQgVX+ Δ X (formula 5)
Wherein：
Total losses power during Δ S--- ascending for elevator, unit W；
Total losses power, unit W when Δ X--- elevators are descending；
Other symbols are identical with the symbol implication in formula 3.
Formula 4 is added with formula 5 or so, is tried to achieve：
When elevator runs, total losses power includes motor iron loss, the loss of reducing gear mechanical output, rubs between car and guide rail
The mechanical output loss that the mechanical output that wiping is caused is lost, windage is caused, the total losses power of the upper and lower operation of elevator are different, i.e.,
Δ X ≠ Δ S, but up-downgoing total losses difference should be little, certainly will be much smaller than Qg (VS+VX), i.e., Section 2 on the right of equation in formula 6The coefficient of balance of elevator is tested out first with traditional loading-drafting current curve method, by known balance
Coefficient value substitutes into formula 4 and formula 5 can calculate Δ S and Δ X, such that it is able to be calculatedJing is to anodontia
Wheel towed elevator and worm and gear elevator carry out test statisticses, when balance coefficient of elevator is interval in [0.4,0.5],In [0.002,0.01] is interval, it is 0.006 to take intermediate value to value, and now formula 6 is reduced to：
In order to improve measurement accuracy of the coefficient of balance when [0.4,0.5] is interval outer, can be by formula 7 on engineering construction
On the right of middle equation, Section 2 0.006 is converted to the ratio with coefficient of balance.Conversion method is：By 0.006 divided by [0.4,0.5] area
Between calculating least favorable point 0.4, i.e. 0.006/0.4=0.015, the i.e. part when coefficient of balance [0.4,0.5] is interval least
When sharp, accounting is 1.5%.Therefore, remove the Section 2 0.006 on the right of 7 equation of formula, and in Section 1 on the right of 7 equation of formula
It is multiplied by (100%-1.5%), i.e., 98.5%, then formula 7 is further transformed to：
On the basis of formula 8, increasing by one carries out calibration correction system for the pairing to pincerlike current sensor and main frame
Number k, that is, obtain formula 3.
The present invention is carried out launching description above in association with drawings and Examples, the description is not restrictive, accompanying drawing institute
Show a kind of embodiment that also simply instrument of the present invention is constituted, technical scheme is not limited thereto.This area it is common
Technical staff is it should be appreciated that in the case of without departing from design philosophy of the present invention, the actual enforcement of the present invention also has certain
Change in a little details.So, as long as meeting present inventive concept, this this change is included within protection scope of the present invention.
Claims (7)
1. a kind of Detector for elevator balance coefficient, is believed by main frame, lift car displacement transducer, pincerlike current sensor, voltage
Number gathering line and power supply adaptor composition, it is characterised in that：Main frame includes at least following external-connected port：Two current signals are external
Port, three voltage signal external-connected ports, a displacement signal external-connected port and charging ports.Lift car displacement is passed
Sensor is placed on the mechanical transmission member of car or cage operation, and the position of main frame is connected to by wireless communication module or data wire
Shifting signal external-connected port；Pincerlike current sensor one end is clamped on elevator driving host motor power-supply wire, another to terminate to main frame
Current signal external-connected port, voltage signal acquisition line one end is connected on elevator driving host motor power-supply wire, another termination
To the voltage external-connected port of main frame；Power supply adaptor output is connected to the charging port of main frame.
2. Detector for elevator balance coefficient according to claim 1, it is characterised in that：Main frame is mainly measured by frequency-converter power
Module, displacement measurement module, microsystem module, LCDs, battery and power management module composition, wherein, frequency conversion work(
Rate measurement module and displacement measurement module are connected with microsystem module by data communication bus respectively；LCDs with it is micro-
Machine system module liquid crystal drive interface is connected；Power management module electric discharge input is connected with battery, discharge outfan and frequency conversion
Power measurement module, displacement measurement module are connected with the power port of microsystem module, power management module charging input end
It is connected with the charging port of main frame, charging outfan is connected with battery.
3. Detector for elevator balance coefficient according to claim 1, it is characterised in that：Instrument software processing procedure is as follows：
(1) unloaded car is parked in into upstation, testing staff clicks on the START button in LCDs, triggers microsystem
Module starts to read and record the power data of frequency-converter power measurement module and displacement measurement module every Fixed Time Interval
Car displacement data, testing staff make car from upstation straight to lower end station, and after elevator stops, testing staff clicks on liquid crystal display screen
On " stopping " button, microsystem module stop read data, and to record data be analyzed calculating, obtain under elevator
The active-power P x and cage operation speed Vx of car elevator driving host motor in stroke point midway during row；
(2) testing staff again taps on the START button in LCDs, and triggering microsystem module starts every fixation
Time interval reads and records the car displacement data of the power data of frequency-converter power measurement module and displacement measurement module, detection
Personnel make car stand erectly from lower end to sail to upstation again, elevator stop after " stopping " button for clicking on liquid crystal display screen of testing staff,
Microsystem module stops reading data, and the data to recording are analyzed calculating, obtain during ascending for elevator car in stroke
The active-power P s and cage operation speed Vs of elevator driving host motor during point midway；
(3) microsystem module below equation is calculated balance coefficient of elevator q：
Wherein：
The coefficient of balance of the tested elevators of q；
The performance number of elevator driving host motor, unit W when Ps zero load cars go upward to midstroke；
The performance number of elevator driving host motor, unit W when Px zero load cars come downwards to midstroke；
The velocity amplitude of car, m/s when Vs zero load cars go upward to midstroke；
The velocity amplitude of car, m/s when Vx zero load cars come downwards to midstroke；
Q nominal load capacities, kg, tested elevator known parameters are manually entered before test；
G acceleration of gravitys, take 9.81m/s2；
K correction factors, default value 1.
4. Detector for elevator balance coefficient according to claim 1, it is characterised in that：Microsystem module synchronization reads and becomes
The data of frequency power measurement module and displacement measurement module, using the side to power data and displacement data labelling " data moment "
Method obtains the active power and cage operation speed of car elevator driving host motor in stroke point midway, and detailed process is such as
Under：
(1), after instrument start, frequency-converter power measurement module measures the active power of elevator driving host motor in real time and is stored in
In Power data register, Power data register only stores newest active power once, and the Refresh Data cycle is Tp；Displacement
Car shift value that measurement module is given at interval of Ts time sampling car displacement transducers is simultaneously stored in displacement data depositor
In, the displacement data in displacement data depositor is cumulative data, i.e., newest displacement data once and displacement data depositor
In former data value be added after as data storage, after the data in displacement data depositor are read, just by displacement
The numerical value of data register resets；
(2) after testing staff clicks on the START button in LCDs, when START button is activated by microsystem module
Blaze is designated as power and bit shift measurement lock in time starting point, and while sends data to power measurement module and displacement measurement module
Request instruction, after power measurement module receives the data requesting instructions of microsystem module, at interval of the T1p times to microsystem
Module sends the power data in a Power data register, T1p ＞ Tp；Displacement measurement module receives microsystem module
After data requesting instructions, the displacement data in a displacement data depositor is sent at interval of the T1s times to microsystem module,
T1s ＞ Ts.After testing staff clicks on " stopping " button on liquid crystal display screen, microsystem module " will stop " button activation moments mark
Power and bit shift measurement lock in time terminal is designated as, and stops data while sending to power measurement module and displacement measurement module
Instruction is sent, and power measurement module and displacement measurement module stop data being sent to microsystem module.Microsystem module will
On each power data and displacement data labelling for receiving " data moment " store afterwards in memory, that is, each group for storing
Data band has temporal information, specifically such as [(T1p, P1), (2T1p, P2), (3T1p, P3) ... ..., (nT1p, Pn)], [(T1s,
S1), (2T1s, S2), (3T1s, S3) ... ..., (mT1s, Sm)], wherein, the power data that Pn was read for the nT1p moment, Sm
For the displacement data that the mT1s moment reads；
(3) all displacement data S1, S2 ... Sm of storage are added, obtain cage operation total kilometres ∑ S, the half of ∑ S is
∑ S/2 is the point midway of car stroke, re-registrates shifting data S1, S2 ... Sm and is added up one by one, and add up shift value
∑ Sk is designated as, ∑ Sk is compared with ∑ S/2 after the displacement data that often adds up, when ∑ Sk is equal to or more than ∑ S/2, stopped
Only add up, " the data moment " of displacement data Sk now is kT1s, the kT1s moment be cage operation to midstroke when
Between Tz, Sk/T1s be car midstroke position when car speed；
(4) to " number in the power data [(T1p, P1), (2T1p, P2), (3T1p, P3) ... ..., (nT1p, Pn))] that stores
According to the moment " T1p, 2T1p ... nT1p is compared with Tz one by one, when iT1p is equal to or more than Tz, stops comparing, now
The corresponding power data Pi of " data moment " iT1p are the power of motor value of car midstroke.
5. Detector for elevator balance coefficient according to claim 1, it is characterised in that：By measuring traction steel-cable or limit
The displacement of fast device rope uses incremental rotary encoder the car displacement transducer that detects car displacement, and displacement transducer is with universal
Magnetic stand is installed and is fixed, and universal magnetic gauge stand adsorbs on the girder steel or steelframe near measurement point, universal magnetic gauge stand and sedan-chair
Connected with spring between the displacement transducer of railway carriage or compartment.
6. Detector for elevator balance coefficient according to claim 1, it is characterised in that：Car displacement transducer can with main frame
To be connected with data wire, it is also possible to be connected with main frame by wireless data communication module.
7. Detector for elevator balance coefficient according to claim 1, it is characterised in that：Power supply adaptor is only giving main frame electricity
Use when pond is charged, instrument can operationally connect power supply adaptor.
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| CN201611180362.9A CN106516925A (en) | 2016-12-13 | 2016-12-13 | Elevator balance coefficient detector |
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| CN201611180362.9A CN106516925A (en) | 2016-12-13 | 2016-12-13 | Elevator balance coefficient detector |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107265225A (en) * | 2017-06-29 | 2017-10-20 | 上海盛蒂斯自动化设备股份有限公司 | Detector for elevator balance coefficient |
| CN108069310A (en) * | 2017-12-27 | 2018-05-25 | 重庆顺心科技发展有限公司 | A kind of Detector for elevator balance coefficient |
| CN109733971A (en) * | 2019-02-28 | 2019-05-10 | 滨州市特种设备检验研究所 | Balance coefficient of elevator detection device and its method |
| CN112158697A (en) * | 2020-10-26 | 2021-01-01 | 杭州西奥电梯有限公司 | Measuring method and monitoring method for elevator balance coefficient |
-
2016
- 2016-12-13 CN CN201611180362.9A patent/CN106516925A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107265225A (en) * | 2017-06-29 | 2017-10-20 | 上海盛蒂斯自动化设备股份有限公司 | Detector for elevator balance coefficient |
| CN108069310A (en) * | 2017-12-27 | 2018-05-25 | 重庆顺心科技发展有限公司 | A kind of Detector for elevator balance coefficient |
| CN109733971A (en) * | 2019-02-28 | 2019-05-10 | 滨州市特种设备检验研究所 | Balance coefficient of elevator detection device and its method |
| CN109733971B (en) * | 2019-02-28 | 2024-04-09 | 滨州市特种设备检验研究所 | Elevator balance coefficient detection method |
| CN112158697A (en) * | 2020-10-26 | 2021-01-01 | 杭州西奥电梯有限公司 | Measuring method and monitoring method for elevator balance coefficient |
| CN112158697B (en) * | 2020-10-26 | 2022-05-03 | 杭州西奥电梯有限公司 | Measuring method and monitoring method for elevator balance coefficient |
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