CN101226096A - Method for measuring torsion of elevator balancing coefficient as well as test device thereof - Google Patents

Method for measuring torsion of elevator balancing coefficient as well as test device thereof Download PDF

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Publication number
CN101226096A
CN101226096A CNA2008100145503A CN200810014550A CN101226096A CN 101226096 A CN101226096 A CN 101226096A CN A2008100145503 A CNA2008100145503 A CN A2008100145503A CN 200810014550 A CN200810014550 A CN 200810014550A CN 101226096 A CN101226096 A CN 101226096A
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CN
China
Prior art keywords
elevator
torsion
car
moment
counterweight
Prior art date
Application number
CNA2008100145503A
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Chinese (zh)
Inventor
王健
Original Assignee
王健
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Application filed by 王健 filed Critical 王健
Priority to CNA2008100145503A priority Critical patent/CN101226096A/en
Publication of CN101226096A publication Critical patent/CN101226096A/en

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Abstract

The invention provides a torque testing method of elevator balancing coefficient, which is characterized in comprising the steps: (1) the torque of maintaining cage and counterbalancing is measured; (2) the difference value W-G of the counterbalancing and the cage weight is determined according to the torque balance equation; (3) the elevator balancing coefficient K=W-G/Q is worked out and output by utilizing the difference value W-G of the counterbalancing and the cage weight and the rating load of elevator Q. In order to realize the methods, a testing device is adopted; the testing device comprises a torque sensor, a force wheel and a computer, wherein one end of the torque sensor is fixedly connected with a barring handwheel, an elevator traction sheave, or other wheel is related with the elevator traction sheave in transmission, the other end of the torque sensor is fixedly connected with the force wheel; an output terminal of the torque sensor is connected with the computer. The torque testing method can test the elevator balancing coefficient conveniently, accurately, safely and promptly, and has the advantages of simple structure, easy operation and excellent performance.

Description

The torsion-testing method and the proving installation thereof of balance coefficient of elevator

Technical field

The invention provides a kind of torsion-testing method and proving installation thereof of balance coefficient of elevator, particularly relate to a kind of fractional load method and device of balance coefficient of elevator.

Background technology

Balance coefficient of elevator is elevator is installed needs in-site measurement in examination and the use a important parameter.At present, the measuring method that generally adopts is to measure parameters such as the voltage of traction motor in the running process of elevator, electric current both at home and abroad, obtain balance coefficient of elevator by calculating and mapping, and in measurement, will repeatedly apply different load according to the requirement of elevator supervision and inspection rules to elevator.This measuring method is a kind of indirect measurement method, both wastes time and energy, and exists again than mistake, is difficult to obtain more accurate balance coefficient of elevator.Therefore, the no-load measuring method of balance coefficient of elevator is assented and is given birth to.The main thought of the no-load measuring method of balance coefficient of elevator is directly to measure the weight difference of Elevator weight sensor and car, utilizes given elevator nominal load capacity again, calculates coefficient of balance.Owing to be that no-load is measured, need not move counterweight, more laborsaving.But because elevator nominal load capacity difference is very big, the variation range of the weight difference of counterweight and car is also very big, and this force transducer that just requires to adopt will all have high measuring accuracy in very big measurement range, and the difficulty of realization is big.And, from the detection position, no matter be the pulling force that detects hoist ropes, still detect the weight difference of counterweight and car at pit, all there are a lot of inconvenience, or even dangerous.

Summary of the invention

The purpose of this invention is to provide a kind of torsion-testing method and proving installation thereof that can make things convenient for, measure the balance coefficient of elevator of balance coefficient of elevator accurately, fast.Its technical scheme is:

A kind of torsion-testing method of balance coefficient of elevator is characterized in that comprising the steps: 1. to measure the moment of torsion of keeping car and counterbalancing; 2. according to torque equilibrium equation, obtain the difference W-G of counterweight weight and car weight; 3. utilize the difference W-G of counterweight weight and car weight and the nominal load capacity Q of elevator, calculate balance coefficient of elevator K = W - G Q , and output.

The torsion-testing method of described balance coefficient of elevator, step 1. in, in lift car, add load p 1, elevator is adjusted to car and counterweight is in sustained height, with the traction motor outage, brake gear unclamps, and manually control makes elevator have up trend, when friction force reaches maximum, records moment of torsion M 1, manually control makes elevator have descending trend again, when friction force reaches maximum, records moment of torsion M 3In lift car, add load p 2, elevator is adjusted to car and counterweight is in sustained height, with the traction motor outage, brake gear unclamps, and manually control makes elevator have descending trend, when friction force reaches maximum, records moment of torsion M 3

The torsion-testing method of described balance coefficient of elevator, step 1. in, for the first time loading size is P 1, the control elevator has up trend, when friction force reaches maximum, records the moment of torsion M that keeps car and counterbalancing 1, at this moment, the torque equilibrium equation of system is:

M 1+(W-G)R-FR-P 1R=0

Loading size for the first time is P 1, the control elevator has descending trend, when friction force reaches maximum, records the moment of torsion M that keeps car and counterbalancing 2, at this moment, the torque equilibrium equation of system is

M 2+(W-G)R+FR-P 1R=0

Loading size for the second time is P 2, the control elevator has descending trend, when friction force reaches maximum, records the moment of torsion M that keeps car and counterbalancing 3, at this moment, the torque equilibrium equation of system is

M 3+(W-G)R+FR-P 2R=0

In above three torque equilibrium equations, R is the equivalent arm of force of hoist ropes pulling force to the axle of measured wheel, measured wheel is that handwheel or traction sheave or other and traction sheave have one of wheel of drive connection, F is the equivalent friction of friction pairs such as elevator guide shoe, bearing, is got the difference of counterweight weight and car weight by above-mentioned three torque equilibrium equation simultaneous solutions:

( W - G ) = P 1 + M 1 + M 2 2 ( M 2 - M 3 ) ( P 2 - P 1 )

A kind of proving installation of realizing that said method adopts, it is characterized in that: comprise torque sensor, application of force wheel and computing machine, wherein an end of torque sensor is fixedlyed connected with the axle of measured wheel, and its other end is fixedlyed connected the output termination computing machine of torque sensor with application of force wheel.

The proving installation of the torsion-testing method of described balance coefficient of elevator, measured wheel are that handwheel, traction sheave or other and traction sheave have one of wheel of drive connection.

The present invention compared with prior art has following advantage:

1, easy to operate: testing location carries out at machine room, working environment is better, both need not enter that environment is poor, the pit of poor stability measures weight difference, do not carry out the easy clamp operation that elevator rope is damaged yet, only need application of force wheel is fixedlyed connected through torque sensor and measured wheel are coaxial, record moment of torsion and get final product, operate more convenient.

2, efficient work: though adopt the fractional load method of testing, only need add secondary load, can finish test.And, " coefficient of balance test " can be arranged in preceding the carrying out of project " carrying 125% rated load stop tests " that must detect in the elevator inspection procedure, do not increase the workload of carrying counterweight, efficient work.

3, test accurately: the balancing torque that records is a mechanical quantity, belongs to direct test; And the balancing torque of torque sensor does not have big variation because of elevator nominal load capacity Q is different, can guarantee torque sensor in the high scope work of precision, and test accurately.Direct measurement counterweight and car weight difference had both been overcome because elevator nominal load capacity difference is very big, the variation range of the weight difference of counterweight and car is also very big, this force transducer that just requires to adopt will be in very big measurement range, all has high measuring accuracy, realize the big shortcoming of difficulty, also overcome parameters such as the voltage of measuring traction motor in the running process of elevator, electric current, had than mistake the shortcoming of degree of accuracy difference by the indirectly testing method of calculating and mapping obtains balance coefficient of elevator.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the invention.

Among the figure: 1, car 2, hoist ropes 3, traction sheave 4, engaged wheel 5, counterweight 6, transmission gear 7, handwheel 8, anchor clamps 9, torque sensor 10, application of force wheel 11, computing machine

Embodiment

In the embodiment shown in fig. 1: the nominal load capacity Q of elevator is 1000 kilograms, elevator rope 2 connects car 1 and counterweight 5 through traction sheave 3, engaged wheel 4, transmission gear 6 is in transmission connection with traction sheave 3, and with handwheel 7 coaxial fixedlying connected, torque sensor 9 one ends are through being fixed on the anchor clamps 8 and handwheel 7 coaxial fixedlying connected on the handwheel 7, its other end is taken turns 10 with the application of force and is fixedlyed connected, and application of force wheel 10 is coaxial with handwheel 7, the output termination computing machine 11 of torque sensor 9, handle the data that receive by computing machine 11, and output.

Its measuring process is:

Step 1., in car 1, after adding 400 kilograms load p 1, elevator is adjusted to car 1 be in sustained height with counterweight 5, control application of force wheel 10 does not rotate, and with the traction motor outage, brake gear unclamps, manually control application of force wheel 10 is given handwheel 7 application of forces, when handwheel 7 was about to make ascending for elevator because of obtaining power, this moment, friction force reached maximum, and torque sensor 9 records moment of torsion M 1Be-1.02 kilogram-metres; In like manner, oppositely manually control application of force wheel 10 is given handwheel 7 application of forces, and when handwheel 7 was about to make elevator descending because of obtaining power, this moment, friction force reached maximum, and torque sensor 9 records moment of torsion M 2Be-2.05 kilogram-metres; The load p that in car 1, adds 500 kilograms again 2After, elevator is adjusted to car 1 be in sustained height with counterweight 5, control application of force wheel 10 does not rotate, traction motor is cut off the power supply, brake gear unclamps, and manually controls application of force wheel 10 and gives handwheel 7 application of forces, when handwheel 7 is about to make elevator descending because of obtaining power, this moment, friction force reached maximum, and torque sensor 9 records moment of torsion M 3Be 1.93 kilogram-metres; Three torque signals that torque sensor 9 will record are all exported to computing machine 11;

Step 2., the loading size is P for the first time 1, the control elevator has up trend, when friction force reaches maximum, records the moment of torsion M that keeps car and counterbalancing 1, at this moment, the torque equilibrium equation of system is:

M 1+(W-G)R-FR-P 1R=0

Loading size for the first time is P 1, the control elevator has descending trend, when friction force reaches maximum, records the moment of torsion M that keeps car and counterbalancing 2, at this moment, the torque equilibrium equation of system is

M 2+(W-G)R+FR-P 1R=0

Loading size for the second time is P 2, the control elevator has descending trend, when friction force reaches maximum, records the moment of torsion M that keeps car and counterbalancing 3, at this moment, the torque equilibrium equation of system is

M 3+(W-G)R+FR-P 2R=0

In above three torque equilibrium equations, R is the equivalent arm of forces of hoist ropes 2 pulling force to the axle of handwheel 7, F is the equivalent friction of friction pairs such as elevator guide shoe, bearing, is got the difference of counterweight (5) weight and car (1) weight by above-mentioned three torque equilibrium equation simultaneous solutions:

Step 3., computing machine 11 utilizes the difference W-G of counterweight weight and car weight and the nominal load capacity Q of elevator, calculates balance coefficient of elevator K = W - G Q = 439 1000 = 0.439 , and output.

Claims (6)

1. the torsion-testing method of a balance coefficient of elevator is characterized in that comprising the steps: 1. to measure the moment of torsion of keeping car (1) and counterweight (5) balance; 2. according to torque equilibrium equation, obtain the difference W-G of counterweight (5) weight and car (1) weight; 3. utilize counterweight (5) weight and the difference W-G of car (1) weight and the nominal load capacity Q of elevator, calculate balance coefficient of elevator K = W - G Q , and output.
2. the torsion-testing method of balance coefficient of elevator as claimed in claim 1 is characterized in that: step 1. in, in lift car (1), add load p 1, elevator is adjusted to car (1) be in sustained height with counterweight (5), with the traction motor outage, brake gear unclamps, and manually control makes elevator have up trend, when friction force reaches maximum, records moment of torsion M 1Manually control makes elevator have descending trend again, when friction force reaches maximum, records moment of torsion M 2In lift car (1), add load p 2, elevator is adjusted to car (1) be in sustained height with counterweight (5), with the traction motor outage, brake gear unclamps, and manually control makes elevator have descending trend, when friction force reaches maximum, records moment of torsion M 3
3. the torsion-testing method of balance coefficient of elevator as claimed in claim 1 or 2 is characterized in that: step 1. in, loading size for the first time is P 1, the control elevator has up trend, when friction force reaches maximum, records the moment of torsion M that keeps car (1) and counterweight (5) balance 1, at this moment, the torque equilibrium equation of system is:
M 1+(W-G)R-FR-P 1R=0
Loading size for the first time is P 1, the control elevator has descending trend, when friction force reaches maximum, records the moment of torsion M that keeps car (1) and counterweight (5) balance 2, at this moment, the torque equilibrium equation of system is
M 2+(W-G)R+FR-P 1R=0
Loading size for the second time is P 2, the control elevator has descending trend, when friction force reaches maximum, records the moment of torsion M that keeps car (1) and counterweight (5) balance 3, at this moment, the torque equilibrium equation of system is
M 3+(W-G)R+FR-P 2R=0
In above three torque equilibrium equations, R is the equivalent arm of force of hoist ropes (2) pulling force to the axle of measured wheel, measured wheel is that handwheel (7) or traction sheave (3) or other and traction sheave (3) have one of wheel of drive connection, F is the equivalent friction of friction pairs such as elevator guide shoe, bearing, is got the difference of counterweight (5) weight and car (1) weight by above-mentioned three torque equilibrium equation simultaneous solutions:
( W - G ) = P 1 + M 1 + M 2 2 ( M 2 - M 3 ) ( P 2 - P 1 )
4. proving installation of realizing the torsion-testing method of the described balance coefficient of elevator of claim 1, it is characterized in that: comprise torque sensor (9), application of force wheel (10) and computing machine (11), wherein an end of torque sensor (9) is fixedlyed connected with the axle of measured wheel, its other end is fixedlyed connected the output termination computing machine (11) of torque sensor (9) with application of force wheel (10).
5. the proving installation of the torsion-testing method of balance coefficient of elevator as claimed in claim 4 is characterized in that: measured wheel be the traction sheave (3) of elevator or drive connection arranged with traction sheave (3) other one of take turns.
6. the proving installation of the torsion-testing method of balance coefficient of elevator as claimed in claim 5 is characterized in that: other that drive connection is arranged with traction sheave (3) taken turns and is handwheel (7).
CNA2008100145503A 2008-02-02 2008-02-02 Method for measuring torsion of elevator balancing coefficient as well as test device thereof CN101226096A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102070052A (en) * 2010-09-01 2011-05-25 上海市特种设备监督检验技术研究院 Method and device for measuring balance coefficient of elevator
CN101670965B (en) * 2009-08-15 2012-04-18 宁波宏大电梯有限公司 Method for measuring elevator equilibrium coefficient
CN102583121A (en) * 2012-01-19 2012-07-18 李典伟 Method for testing elevator balance coefficient by aid of elevator handwheel
CN102674102A (en) * 2012-05-22 2012-09-19 刘培 Detector for elevator balance coefficient
CN102674103A (en) * 2012-05-22 2012-09-19 刘培 Method for detecting elevator balance coefficient
CN102689826A (en) * 2012-05-31 2012-09-26 广州日滨科技发展有限公司 Method and system for detecting balance coefficient of elevator on basis of frequency converter
WO2013174243A1 (en) * 2012-05-22 2013-11-28 天津豪雅科技发展有限公司 Elevator balance coefficient detection method and detector therefor
CN104477716A (en) * 2014-11-28 2015-04-01 陈永煊 Testing method and device for balance coefficient of non-load elevator
CN105008260A (en) * 2013-03-04 2015-10-28 通力股份公司 Method for determining the balancing weight difference in an elevator
CN105438907A (en) * 2015-12-29 2016-03-30 永大电梯设备(中国)有限公司 Detection method for traction force of elevator
CN105480803A (en) * 2016-01-22 2016-04-13 袁传森 Portable tester for braking torque of elevator brake in use
CN105565101A (en) * 2016-02-29 2016-05-11 大连光程光电科技有限公司 Elevator balance coefficient detection device and method
CN106081774A (en) * 2016-08-15 2016-11-09 重庆迈高电梯有限公司 A kind of balance coefficient of elevator detection alarm method and system
CN105060053B (en) * 2015-08-10 2017-08-08 沈阳市蓝光自动化技术有限公司 A kind of detection method of balance coefficient of elevator
CN108792869A (en) * 2018-06-30 2018-11-13 上海江菱机电有限公司 Elevator power failure rescue mode

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101670965B (en) * 2009-08-15 2012-04-18 宁波宏大电梯有限公司 Method for measuring elevator equilibrium coefficient
CN102070052A (en) * 2010-09-01 2011-05-25 上海市特种设备监督检验技术研究院 Method and device for measuring balance coefficient of elevator
CN102070052B (en) * 2010-09-01 2013-02-06 上海市特种设备监督检验技术研究院 Method and device for measuring balance coefficient of elevator
CN102583121A (en) * 2012-01-19 2012-07-18 李典伟 Method for testing elevator balance coefficient by aid of elevator handwheel
CN102674102A (en) * 2012-05-22 2012-09-19 刘培 Detector for elevator balance coefficient
CN102674103A (en) * 2012-05-22 2012-09-19 刘培 Method for detecting elevator balance coefficient
WO2013174243A1 (en) * 2012-05-22 2013-11-28 天津豪雅科技发展有限公司 Elevator balance coefficient detection method and detector therefor
CN102674103B (en) * 2012-05-22 2014-12-03 天津豪雅科技发展有限公司 Method for detecting elevator balance coefficient
CN102674102B (en) * 2012-05-22 2014-12-03 天津豪雅科技发展有限公司 Detector for elevator balance coefficient
CN102689826A (en) * 2012-05-31 2012-09-26 广州日滨科技发展有限公司 Method and system for detecting balance coefficient of elevator on basis of frequency converter
CN102689826B (en) * 2012-05-31 2014-12-03 广州日滨科技发展有限公司 Method and system for detecting balance coefficient of elevator on basis of frequency converter
CN105008260A (en) * 2013-03-04 2015-10-28 通力股份公司 Method for determining the balancing weight difference in an elevator
CN105008260B (en) * 2013-03-04 2017-05-31 通力股份公司 Method for determining elevator balanced weight difference in elevator
CN104477716A (en) * 2014-11-28 2015-04-01 陈永煊 Testing method and device for balance coefficient of non-load elevator
CN104477716B (en) * 2014-11-28 2016-11-02 陈永煊 The method of testing of a kind of non-loaded balance coefficient of elevator and test device thereof
CN105060053B (en) * 2015-08-10 2017-08-08 沈阳市蓝光自动化技术有限公司 A kind of detection method of balance coefficient of elevator
CN105438907A (en) * 2015-12-29 2016-03-30 永大电梯设备(中国)有限公司 Detection method for traction force of elevator
CN105480803A (en) * 2016-01-22 2016-04-13 袁传森 Portable tester for braking torque of elevator brake in use
CN105565101A (en) * 2016-02-29 2016-05-11 大连光程光电科技有限公司 Elevator balance coefficient detection device and method
CN106081774A (en) * 2016-08-15 2016-11-09 重庆迈高电梯有限公司 A kind of balance coefficient of elevator detection alarm method and system
CN108792869A (en) * 2018-06-30 2018-11-13 上海江菱机电有限公司 Elevator power failure rescue mode

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