CN102689826B - Method and system for detecting balance coefficient of elevator on basis of frequency converter - Google Patents
Method and system for detecting balance coefficient of elevator on basis of frequency converter Download PDFInfo
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- CN102689826B CN102689826B CN201210178225.7A CN201210178225A CN102689826B CN 102689826 B CN102689826 B CN 102689826B CN 201210178225 A CN201210178225 A CN 201210178225A CN 102689826 B CN102689826 B CN 102689826B
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Abstract
The invention relates to a method and a system for detecting a balance coefficient of an elevator on the basis of a frequency converter. The method includes the following steps of acquiring an output torque value of a tractor when suspension points of an elevator car and a counter weight are horizontally aligned to each other in static state, and calculating the balance coefficient of the elevator by the aid of the output torque value. The detection of balance coefficient can be completed by just controlling the elevator to run in a state in which the elevator car is horizontally aligned to the counter weight, and the detection is simple in operation process, short in operation time, high in efficiency, and extremely high in precision since the detection is completed under the static state of the elevator.
Description
Technical field
The present invention relates to elevator detection technique field, particularly relate to a kind of balance coefficient of elevator method of inspection based on frequency converter, and a kind of balance coefficient of elevator checking system based on frequency converter.
Background technology
Balance coefficient of elevator is one of important parameter of lift facility safety verification.The traditional measurement method of the equilibrium factor of installation and operation elevator has:
One, to elevator, apply respectively the load of Different Weight, then measure respectively ascending for elevator in different loads situation, when descending, voltage, the current value of car and counterweight traction motor when same level position, and then by calculating and mapping obtains balance coefficient of elevator;
Two, manually open band-type brake, use special measurement instrument measure Elevator weight sensor in free state to the pressure of energy disperser and apply car after the fixed load pressure to energy disperser, calculate the weight of counterweight and car, and then calculate equilibrium factor;
Three, use special testing tool, measuring steel wire rope tension is calculated equilibrium factor;
Four, use Frequency Converter Control elevator uplink and downlink, when car and counterweight are during in same level position, detection record towing machine torque in real time, and obtain equilibrium factor by calculating.
Said method one, two, three all needs to use extra measuring equipment, and what have also needs repeatedly to carry counterweight, and complicated operation, wastes time and energy; Although method four does not need to use extras, but need to detect in real time the towing machine torque in a certain moment, detection more difficult assurance on opportunity, operation easier is larger, and owing to being dynamic measurement in the rotation process of towing machine, generally can there are fluctuation and vibrations in the speed of elevator, mechanical friction power is also difficult to determine, survey precision is lower.
Summary of the invention
Based on this, the invention provides a kind of balance coefficient of elevator method of inspection based on frequency converter, a need control elevator runs to car and counterweight horizontal alignment can complete detection, and testing process is simple to operate, the operating time is short, efficiency is high; Detection is to carry out under elevator quiescence, and accuracy of detection is very high.
Another object of the present invention is also to provide the system that realizes said method.
A balance coefficient of elevator method of inspection based on frequency converter, comprises the steps:
Obtain the hitch point of lift car and the hitch point horizontal alignment of counterweight and the output torque value of elevator traction machine when static;
Utilize described output torque value, calculate balance coefficient of elevator;
Wherein, the step of obtaining the output torque value of the hitch point of lift car and the hitch point horizontal alignment of counterweight elevator traction machine when static described in specifically comprises:
Towing machine by Frequency Converter Control elevator turns round, and band-type brake is opened, and lift car brings into operation, when control elevator runs to the position of the hitch point of lift car and the hitch point horizontal alignment of counterweight, by frequency converter, stop towing machine and move, band-type brake is closed, controls elevator out of service;
After lift car and counterweight horizontal alignment, control band-type brake and open, Frequency Converter Control towing machine output torque, makes lift car and counterweight keep static, utilizes frequency converter to obtain the output torque value of described elevator traction machine.
Therein in an embodiment, describedly utilize described output torque value, the step of calculating balance coefficient of elevator specifically comprises:
Utilize described output torque value, by balance coefficient of elevator calculating formula K=(2*T*N)/(g*D*Q), calculate described balance coefficient of elevator, wherein K is described balance coefficient of elevator, T is described output torque value, N is reduction ratio, g is gravity acceleration value, the traction sheave diameter of the towing machine that D is described elevator, the base load rating that Q is described elevator.
A balance coefficient of elevator checking system based on frequency converter, comprises acquisition module and computing module:
Described acquisition module is for obtaining the output torque value of the hitch point of lift car and the hitch point horizontal alignment of counterweight elevator traction machine when also static;
Described computing module, for according to the described output torque value of described acquisition module, calculates balance coefficient of elevator;
Wherein, described acquisition module comprises control module and moment values acquisition module;
Described control module is for utilizing the towing machine running of Frequency Converter Control elevator, band-type brake is opened, lift car brings into operation, when control elevator runs to the position of the hitch point of lift car and the hitch point horizontal alignment of counterweight, by frequency converter, stopping towing machine moving, band-type brake is closed, controls elevator out of service;
Described moment values acquisition module is used for after lift car and counterweight horizontal alignment, controls band-type brake and opens, and Frequency Converter Control towing machine output torque, makes lift car and counterweight keep static, utilizes frequency converter to obtain the output torque value of described elevator traction machine.
Therein in an embodiment, described computing module also for:
Utilize described output torque value, by balance coefficient of elevator calculating formula K=(2*T*N)/(g*D*Q), calculate described balance coefficient of elevator, wherein K is described balance coefficient of elevator, T is described output torque value, N is reduction ratio, g is gravity acceleration value, the traction sheave diameter of the towing machine that D is described elevator, the base load rating that Q is described elevator.
The present invention only need control the position that elevator runs to the hitch point of lift car and the hitch point horizontal alignment of counterweight and can detect, and testing process is simple to operate, the operating time is short, efficiency is high; At elevator, run to behind the position of car and counterweight horizontal alignment, control elevator is out of service, car and counterweight keep the output torque value of towing machine being detected after quiescence again, testing process compared with prior art, get rid of towing machine speed fluctuations, mechanical vibration and mechanical friction power and changed the interference bringing, greatly improved the precision that equilibrium factor is measured.
Accompanying drawing explanation
Fig. 1 is a kind of balance coefficient of elevator method of inspection based on frequency converter of the present invention schematic flow sheet in one embodiment.
Fig. 2 is a kind of balance coefficient of elevator checking system based on frequency converter of the present invention structural representation in one embodiment.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Be the schematic flow sheet of a kind of balance coefficient of elevator method of inspection based on frequency converter of the present invention as shown in Figure 1, this method of inspection step is as follows:
The output torque value of the hitch point horizontal alignment of S11, the hitch point that obtains lift car and counterweight elevator traction machine when static;
In a preferred embodiment, for S11, specifically can comprise:
Control the position that elevator runs to the hitch point of lift car and the hitch point horizontal alignment of counterweight; Can utilize elevator special converter, during detection, operating personal can first arrange the parameter of elevator by the input media of frequency converter, can turn round by the towing machine of Frequency Converter Control elevator, now band-type brake is opened, towing machine running, lift car brings into operation, when the hitch point of lift car and the hitch point of counterweight are during in same level position, operating personal can stop towing machine by frequency converter and move, and band-type brake is closed simultaneously, elevator is out of service, and now lift car and counterweight are in same level position;
Utilize frequency converter to obtain the output torque value of described elevator traction machine; After lift car and counterweight horizontal alignment, operating personal can be controlled frequency converter and enter balance coefficient of elevator measurement pattern, now band-type brake is opened, frequency converter is controlled towing machine output torque fast, make lift car and counterweight keep static, the demonstration output unit of frequency converter can show the output torque value of towing machine;
In this step, the position that only need utilize Frequency Converter Control elevator to run to the hitch point of lift car and the hitch point horizontal alignment of counterweight can be detected, and testing process is simple to operate, the operating time is short, efficiency is high; Detection is to carry out under elevator quiescence, and accuracy of detection improves greatly;
S12, utilize described output torque value, calculate balance coefficient of elevator;
In a preferred embodiment, for S12, can specifically comprise:
Utilize described output torque value, according to the physics law of elevator operation, by balance coefficient of elevator calculating formula K=(2*T*N)/(g*D*Q), calculate described balance coefficient of elevator; Wherein, K is described balance coefficient of elevator, and T is described output torque value, and N is reduction ratio, and g is gravity acceleration value, the traction sheave diameter of the towing machine that D is described elevator, the base load rating that Q is described elevator; The calculating of balance coefficient of elevator can automatically be calculated in advance to frequency converter input test instruction after frequency converter gets output torque value, then by the output unit output of frequency converter.
As shown in Figure 2, be a kind of balance coefficient of elevator checking system based on frequency converter of the present invention structural representation in one embodiment, comprise acquisition module 21 and computing module 22:
Described acquisition module 21 is for obtaining the hitch point of lift car and the hitch point horizontal alignment of counterweight and the output torque value of elevator traction machine when static;
Described computing module 22, for according to the described output torque value of described acquisition module, calculates balance coefficient of elevator.
In an embodiment, described acquisition module 21 comprises control module and moment values acquisition module therein;
When described control module runs to the position of the hitch point of lift car and the hitch point horizontal alignment of counterweight for controlling elevator, control elevator out of service;
Described moment values acquisition module is for utilizing frequency converter to obtain the output torque value of described elevator traction machine.
Therein in an embodiment, described computing module 22 also for:
Utilize described output torque value, by balance coefficient of elevator calculating formula K=(2*T*N)/(g*D*Q), calculate described balance coefficient of elevator, wherein K is described balance coefficient of elevator, T is described output torque value, N is reduction ratio, g is gravity acceleration value, the traction sheave diameter of the towing machine that D is described elevator, the base load rating that Q is described elevator.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (4)
1. the balance coefficient of elevator method of inspection based on frequency converter, is characterized in that, comprises the steps:
Obtain the hitch point of lift car and the hitch point horizontal alignment of counterweight and the output torque value of elevator traction machine when static;
Utilize described output torque value, calculate balance coefficient of elevator;
Wherein, the step of obtaining the output torque value of the hitch point of lift car and the hitch point horizontal alignment of counterweight elevator traction machine when static described in specifically comprises:
Towing machine by Frequency Converter Control elevator turns round, and band-type brake is opened, and lift car brings into operation, when control elevator runs to the position of the hitch point of lift car and the hitch point horizontal alignment of counterweight, by frequency converter, stop towing machine and move, band-type brake is closed, controls elevator out of service;
After lift car and counterweight horizontal alignment, control band-type brake and open, Frequency Converter Control towing machine output torque, makes lift car and counterweight keep static, utilizes frequency converter to obtain the output torque value of described elevator traction machine.
2. the balance coefficient of elevator method of inspection based on frequency converter according to claim 1, is characterized in that, describedly utilizes described output torque value, and the step of calculating balance coefficient of elevator specifically comprises:
Utilize described output torque value, by balance coefficient of elevator calculating formula K=(2*T*N)/(g*D*Q), calculate described balance coefficient of elevator, wherein K is described balance coefficient of elevator, T is described output torque value, N is reduction ratio, g is gravity acceleration value, the traction sheave diameter of the towing machine that D is described elevator, the base load rating that Q is described elevator.
3. the balance coefficient of elevator checking system based on frequency converter, is characterized in that, comprises acquisition module and computing module:
Described acquisition module is for obtaining the output torque value of the hitch point of lift car and the hitch point horizontal alignment of counterweight elevator traction machine when also static;
Described computing module, for according to the described output torque value of described acquisition module, calculates balance coefficient of elevator;
Wherein, described acquisition module comprises control module and moment values acquisition module;
Described control module is for utilizing the towing machine running of Frequency Converter Control elevator, band-type brake is opened, lift car brings into operation, when control elevator runs to the position of the hitch point of lift car and the hitch point horizontal alignment of counterweight, by frequency converter, stopping towing machine moving, band-type brake is closed, controls elevator out of service;
Described moment values acquisition module is used for after lift car and counterweight horizontal alignment, controls band-type brake and opens, and Frequency Converter Control towing machine output torque, makes lift car and counterweight keep static, utilizes frequency converter to obtain the output torque value of described elevator traction machine.
4. the balance coefficient of elevator checking system based on frequency converter according to claim 3, is characterized in that, described computing module also for:
Utilize described output torque value, by balance coefficient of elevator calculating formula K=(2*T*N)/(g*D*Q), calculate described balance coefficient of elevator, wherein K is described balance coefficient of elevator, T is described output torque value, N is reduction ratio, g is gravity acceleration value, the traction sheave diameter of the towing machine that D is described elevator, the base load rating that Q is described elevator.
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| CN201210178225.7A CN102689826B (en) | 2012-05-31 | 2012-05-31 | Method and system for detecting balance coefficient of elevator on basis of frequency converter |
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| CN201210178225.7A CN102689826B (en) | 2012-05-31 | 2012-05-31 | Method and system for detecting balance coefficient of elevator on basis of frequency converter |
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| CN102689826B true CN102689826B (en) | 2014-12-03 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103145015B (en) * | 2013-01-30 | 2015-09-30 | 深圳市海浦蒙特科技有限公司 | The method of inspection of balance coefficient of elevator |
| CN103274273B (en) * | 2013-04-10 | 2016-02-24 | 深圳市海浦蒙特科技有限公司 | Elevator overload detection method |
| CN104118781B (en) * | 2014-07-08 | 2017-01-11 | 上海新时达电气股份有限公司 | Method for determining balance coefficient |
| CN105502116A (en) * | 2014-10-15 | 2016-04-20 | 江南嘉捷电梯股份有限公司 | Method used for measuring balance coefficient of elevator |
| CN105540370A (en) * | 2015-12-17 | 2016-05-04 | 中联重科股份有限公司 | Elevator safety monitoring device, system and method, and elevator |
| CN105752785B (en) * | 2016-04-13 | 2018-05-22 | 苏州汇川技术有限公司 | Balance coefficient of elevator detecting system and method |
| CN105905724B (en) * | 2016-06-16 | 2018-04-06 | 广州广日电梯工业有限公司 | The detection method and its detection means of a kind of balance coefficient of elevator |
| CN106348117A (en) * | 2016-11-18 | 2017-01-25 | 广州日滨科技发展有限公司 | Calculation method and device of elevator equilibrium coefficient |
| CN107458940B (en) * | 2017-09-12 | 2019-09-20 | 上海辛格林纳新时达电机有限公司 | A kind of method, apparatus and frequency converter of determining balance coefficient of elevator |
| CN109896378B (en) * | 2017-12-11 | 2020-10-13 | 日立楼宇技术（广州）有限公司 | Monitoring method, device, elevator control cabinet, system, equipment and storage medium |
| CN111824888B (en) * | 2020-08-13 | 2022-03-01 | 苏州汇川技术有限公司 | Elevator balance coefficient detection method and device, elevator and computer storage medium |
| CN113148791B (en) * | 2021-03-31 | 2022-03-29 | 天津市特种设备监督检验技术研究院(天津市特种设备事故应急调查处理中心) | Rapid calculation method for elevator balance coefficient |
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| US3610342A (en) * | 1969-12-18 | 1971-10-05 | Otis Elevator Co | Load weighing apparatus for elevators |
| CN1529142A (en) * | 2003-10-14 | 2004-09-15 | 曾晓东 | Brake force moment measuring device and method |
| CN101226096A (en) * | 2008-02-02 | 2008-07-23 | 王健 | Method for measuring torsion of elevator balancing coefficient as well as test device thereof |
| CN101670965A (en) * | 2009-08-15 | 2010-03-17 | 宁波宏大电梯有限公司 | Method for measuring elevator equilibrium coefficient |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000255927A (en) * | 1999-03-11 | 2000-09-19 | Hitachi Building Systems Co Ltd | Balance point computing method for elevator cage |
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| US3610342A (en) * | 1969-12-18 | 1971-10-05 | Otis Elevator Co | Load weighing apparatus for elevators |
| CN1529142A (en) * | 2003-10-14 | 2004-09-15 | 曾晓东 | Brake force moment measuring device and method |
| CN101226096A (en) * | 2008-02-02 | 2008-07-23 | 王健 | Method for measuring torsion of elevator balancing coefficient as well as test device thereof |
| CN101670965A (en) * | 2009-08-15 | 2010-03-17 | 宁波宏大电梯有限公司 | Method for measuring elevator equilibrium coefficient |
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Address after: Nanxiang three road, Science City high tech Industrial Development Zone, Guangzhou city of Guangdong Province, No. 2 510660 Patentee after: Hitachi building technologies (Guangzhou) Co. Ltd. Address before: Nanxiang three road 510660 Guangdong city of Guangzhou province Guangzhou Science City No. 2 Patentee before: Guangzhou Ropente Science and Technology Development Co., Ltd. |