CN1433372A - Elevator main rope elongation sensor - Google Patents

Elevator main rope elongation sensor Download PDF

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Publication number
CN1433372A
CN1433372A CN00818794A CN00818794A CN1433372A CN 1433372 A CN1433372 A CN 1433372A CN 00818794 A CN00818794 A CN 00818794A CN 00818794 A CN00818794 A CN 00818794A CN 1433372 A CN1433372 A CN 1433372A
Authority
CN
China
Prior art keywords
rope
elevator
decision means
elongation sensor
main push
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN00818794A
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Chinese (zh)
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CN1243658C (en
Inventor
高木宏之
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
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Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of CN1433372A publication Critical patent/CN1433372A/en
Application granted granted Critical
Publication of CN1243658C publication Critical patent/CN1243658C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/14—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable
    • D07B1/145—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising elements for indicating or detecting the rope or cable status
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/06—Arrangements of ropes or cables
    • B66B7/10—Arrangements of ropes or cables for equalising rope or cable tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/12—Checking, lubricating, or cleaning means for ropes, cables or guides
    • B66B7/1207—Checking means
    • B66B7/1215—Checking means specially adapted for ropes or cables
    • B66B7/1223—Checking means specially adapted for ropes or cables by analysing electric variables
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2301/00—Controls
    • D07B2301/25—System input signals, e.g. set points
    • D07B2301/259—Strain or elongation
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2301/00—Controls
    • D07B2301/55—Sensors
    • D07B2301/5531—Sensors using electric means or elements
    • D07B2301/554—Sensors using electric means or elements for measuring variable resistance

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  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Abstract

An elevator main rope elongation sensor for sensing the longation of a main rope of an elevator sensing an electric resistance measuring instrument which measures the electric resistance of a conductive filament contained in the main rope, a judging means which judges whether or not the resistance value measured by the electric resistance measuring instrument is within a predetermined normal range, and an alarm means which raises an alarm when the judging means judges the measured value to be abnormal. The judgment is made by taking the elomgation/contraction of the main rope which is caused by the temperature and hunidity in the hoistway into consideration to improve the precision of measurement of the elongation of the main rope.

Description

Elevator main rope elongation sensor
Technical field
Be provided with in the elevator that the present invention relates to use the main push-towing rope rope of synthetic fibre rope in elevator lifting channel, to hang, detect the elevator main rope elongation sensor of the extension situation of main push-towing rope rope.
Background technology
Usually, in the elevator of mode of traction, lift car and counterweight are hung in elevator lifting channel by the main push-towing rope rope.The bottom of hoist trunk is provided with energy disperser and the energy disperser to reusing that lift car is used.Counterweight and the size of space between the energy disperser of reusing usually required to be maintained at specified value when again, lift car stops at the superiors.But because the extension after the long-term use of main push-towing rope rope, counterweight and the size of space between the energy disperser of reusing dwindled.Particularly under the situation of the main push-towing rope rope that uses synthetic fibre rope to make, the elongation of main push-towing rope rope is twice than the extension of wirerope.
For the such extension of main push-towing rope rope, always when periodic inspection, measure counterweight and to the size of space between the energy disperser of reusing.At this moment maintenance personnel start elevator, and another maintenance personnel enter in the hole of elevator lifting channel and measure.Therefore need two maintenance personnel, inefficiency.
To this, for example Japanese kokai publication hei 6-56372 communique discloses and has utilized maintenance personnel to carry out method for measuring.But this method requires the maintenance personnel to confirm measurement result in the hole in that lift car is opened once again to the superiors after, and therefore work is gone up and bothered inefficiency.
Summary of the invention
The present invention makes for solving above-mentioned problem, and its purpose is, obtains detecting efficiently, simply the elevator main rope elongation sensor of extension of the main push-towing rope rope of synthetic fibre rope.
Elevator main rope elongation sensor of the present invention, the main push-towing rope rope that is to use synthetic fibre rope to make with synthetic fiber strand and conducting fibre, in hanging elevator in elevator lifting channel, lift car is provided with, detect the elevator main rope elongation sensor of the extension of main push-towing rope rope, possess: the resistance measurement device of measuring the resistance value of conducting fibre, judge the whether decision means in predefined normal range of resistance value that described resistance measurement device measures, and the warning means of when described decision means judges that described measured value is unusual, sending warning.
Description of drawings
Fig. 1 is the constructional drawing of the elevator main rope elongation sensor of the invention process form 1.
Fig. 2 be the invention process form 2 elevator main rope elongation sensor want bilge construction figure.
Fig. 3 be the invention process form 3 elevator main rope elongation sensor want bilge construction figure.
Fig. 4 be the invention process form 4 elevator main rope elongation sensor want bilge construction figure.
Fig. 5 is the block scheme of the elevator main rope elongation sensor of the invention process form 5.
Concrete example
With reference to the accompanying drawings best example of the present invention is illustrated.
Example 1
Fig. 1 is the constructional drawing of the elevator main rope elongation sensor of the invention process form 1.In the drawings, lift car 1 and counterweight 2 are suspended in the hoist trunk by the main push-towing rope rope 3 of synthetic fibre rope making.Main push-towing rope rope 3 have the multiply synthetic fiber strand and at least a portion strand of these synthetic fiber strands, be built in respectively on the whole length, as many carbon fibers of conducting fibre.
The centre portion of main push-towing rope rope 3 is on the axle drive shaft 5 that hangs over the actuating device 4 that is disposed at hoist trunk top.Lift car 1 and counterweight 2 utilize the propulsive effort lifting of actuating device 4.The lift car Hanging roller 6 that a pair of main push-towing rope rope 3 is walked around usefulness is set in the bottom of lift car 1.The top of counterweight 2 is provided with the counterweight Hanging roller 7 that main push-towing rope rope 3 is walked around usefulness.Two ends of main push-towing rope rope 3 are connected to hawser stake 8,9 on hoist trunk top.
Elevator is moved the resistance measurement device 11 of measuring the resistance value that is built in the carbon fiber in the main push-towing rope rope 3 is set on the control panel 10 of control.Resistance measurement device 11 is connected in the two ends of carbon fiber.
Be provided with on the control panel 10 and judge the whether decision means 12 in predefined normal range and judge the warning means 13 that measured values give the alarm when unusual of resistance value that resistance measurement device 11 measures at decision means 12 again.The main rope elongation sensor of example 1 has resistance measurement device 11, decision means 12 and warning means 13.
With such main rope elongation sensor, utilize the resistance value of the carbon fiber of 11 pairs of main push-towing rope ropes 3 of resistance measurement device to measure where necessary.Carbon fiber is disposed on the whole length of main push-towing rope rope 3, extend the same with the main push-towing rope rope when As time goes on main push-towing rope rope 3 extends.In case that is main push-towing rope rope 3 extends, carbon fiber extends on whole length, reduced cross-sectional area, and resistance value increases.
The resistance value that resistance measurement device 11 determines is monitored by decision means 12, judges whether to take place unusual.In case measured value exceeds predefined normal range, just send anomaly detection signal to warning means 13, warning means 13 just send out alerting signal.The maintenance personnel that receive warning will adjust necessary disposal such as remaining stroke or replacing main push-towing rope rope.
Adopt such main rope elongation sensor, can be how and where necessary expeditiously, the extension to main push-towing rope rope 3 detects simply regardless of the position of lift car 1.And can on remote, confirm the extension of main push-towing rope rope 3 automatically, can reduce the needed expense of maintenance simultaneously.
Example 2
Fig. 2 be the invention process form 2 elevator main rope elongation sensor want bilge construction figure.In the drawings, the main push-towing rope rope of making by synthetic fibre rope 3 have the multiply synthetic fiber strand 31 that aromatic polyamide (aramid) resin makes and at least a portion strand of these synthetic fiber strands 31, be built in respectively on the whole length, as the many carbon fibers 32 of conducting fibre.
11 in resistance measurement device is connected with an end of main push-towing rope rope 3.On the other end of main push-towing rope rope 3, synthetic fiber strand 31 utilize splicing ear 33 per two restraint into a branch of.Again, utilizing splicing ear 33 that two on carbon fiber is connected in series is one group.
At resistance measurement device 11, be provided with and comprise power supply 35, low-pass filter 36 and A/D changer 37 many groups that on carbon fiber 32, apply voltage by resistor 34.Other structures are identical with example 1.
Adopt such main rope elongation sensor, owing to carbon fiber 32 is electrically connected with many in the end of main push- towing rope rope 3,11 ends that connect main push-towing rope rope 3 of resistance measurement device get final product, and distribution is easy.Therefore, the elevator of 1: 1 lashed cable for example, as long as connect the resistance measurement device in lift car one side of main push-towing rope rope 3 or the end of counterweight one side, structure that can simplification device.
Example 3
Fig. 3 be the invention process form 3 elevator main rope elongation sensor want bilge construction figure.In this example, whole carbon fibers 32 that main push-towing rope rope 3 is comprised utilize a plurality of splicing ears 33 to be connected in series on electric.Carbon fiber 32 add up to even number (among the figure being 6) root, 11 ends that connect main push-towing rope rope 3 of resistance measurement device.Other structures are identical with example 1.
Such main push-towing rope rope extends in the determinator, and 11 in resistance measurement device is connected with an end of main push-towing rope rope 3 and gets final product, and distribution is easy.Therefore in the elevator of for example 1: 1 lashed cable, only connect resistance measurement device 11 and get final product, structure that can simplification device in the end of lift car one side of main push-towing rope rope 3 or counterweight one side.Again,, needn't carry out resistance measurement on electric, can simplify the structure of resistance measurement device 11 each root carbon fiber 32 because whole carbon fibers 32 of a main push-towing rope rope 3 are connected in series.
Example 4
In example 3, a main push-towing rope rope 3 in-to-in carbon fibers 32 are connected in series on electric, but also can be as shown in Figure 4, under the situation of using many main push-towing rope ropes 3, cross over many main push-towing rope ropes 3 carbon fiber 32 is connected in series on electric, can further simplify the structure of resistance measurement device 11.
Example 5
Fig. 5 is the block scheme of the elevator main rope elongation sensor of the invention process form 5.
In the drawings, the CPU14 of decision means 12 passes through input circuit 15,16 from resistance measurement device 11, temperature-detecting device 21 and humidity detector 22 incoming signals.Temperature-detecting device 21 detects the temperature in the hoist trunk, and this information is outputed to decision means 12.
Decision means 12 is provided with storage and the measured value setting value relatively and the memory of data such as coefficient of correction 17 of temperature, humidity.CPU14 is judged as in measured value and passes through output circuit 18 under the unusual situation to warning means 13 output abnormality detection signals.
Like this, not only setting value and measured value are compared, and considered that the flexible of main push-towing rope rope 3 that the temperature and humidity in the hoist trunk causes judge, can be improved the extension accuracy of detection of main push-towing rope rope 3 with this.
Again, when initial resistivity value is stored in memory device 17, also can utilize this initial resistivity value and measured value are compared, judge the unusual of elongation, can eliminate the initial error influence of main push-towing rope rope 3 and carbon fiber 32, improve accuracy of detection with this.
The measured value of resistance value can also be stored in memory device 17, judge according to the aviation value of the measured value of measuring for several times whether elongation is unusual, can eliminate the influence of error at measurment, improve accuracy of detection.
Also have, in the above-described embodiments, a main push-towing rope rope 3 is measured many carbon fibers 32 carry out resistance value mensuration, but measure according to the resistance value that the carbon fiber more than one or one 32 is carried out at least, can detect the extension of main push-towing rope rope 3.But can utilize the resistance value of many carbon fibers 32 is measured, improved reliability.
Also have, in above-mentioned example, with the example of carbon fiber 32 as conducting fibre, but the fiber that also can adopt other conductive materials to make.
Also have, in above-mentioned example, main rope elongation sensor is arranged in the control panel 10, but also main rope elongation sensor can be arranged on lift car 1 or the counterweight 2, make it that anomaly detection signal is sent to control panel.
Also have, can resistance value be obtained directly as numerical value with resistance determinator and decision means and judge, but the voltage in the time of also can measuring resistance and pass to predetermined electric current judges that this magnitude of voltage whether in normal scope, judges resistance value indirectly with this.

Claims (8)

1. elevator main rope elongation sensor, the main push-towing rope rope that is to use synthetic fibre rope to make with synthetic fiber strand and conducting fibre, in hanging elevator in elevator lifting channel, lift car is provided with, detect the elevator main rope elongation sensor of the extension of main push-towing rope rope, it is characterized in that possessing
Measure the resistance value of described conducting fibre the resistance measurement device, judge resistance value that described resistance measurement device measures the whether decision means in predefined normal range and the warning means of when described decision means judges that described measured value is unusual, sending warning.
2. elevator main rope elongation sensor according to claim 1, it is characterized in that, with the described conducting fibre of even number bar that is contained in the described main push-towing rope rope is one group, and one group of described conducting fibre is connected in series mutually, and described resistance measurement device only is connected in an end of described main push-towing rope rope.
3. elevator main rope elongation sensor according to claim 2 is characterized in that, the whole described conducting fibre that is contained in described main push-towing rope rope is connected in series on electric mutually.
4. elevator main rope elongation sensor according to claim 1, it is characterized in that, described lift car utilizes many described main push-towing rope ropes to hang, the mutual connected in electrical series of described conducting fibre that is contained in described many main push-towing rope ropes connects, and described resistance measurement device only is connected in an end of described many main push-towing rope ropes.
5. elevator main rope elongation sensor according to claim 1, it is characterized in that, the temperature-detecting device that detects the temperature in the described hoist trunk is connected in described decision means, and described decision means is judged described measured value according to the information of described temperature-detecting device output.
6. elevator main rope elongation sensor according to claim 1, it is characterized in that, the humidity detector that detects the humidity in the described hoist trunk is connected in described decision means, and described decision means is judged described measured value according to the information of described humidity detector output.
7. elevator main rope elongation sensor according to claim 1, it is characterized in that, the memory device of the initial resistivity value of the described conducting fibre of storage is set in the described decision means, and the method for described decision means utilization and described initial resistivity value comparison is judged described measured value.
8. elevator main rope elongation sensor according to claim 1, it is characterized in that, the memory device of the described measured value that storage repeatedly measures is set in the described decision means, and described decision means utilizes the aviation value of the described described measured value of repeatedly measuring to judge.
CNB008187940A 2000-12-07 2000-12-07 Elevator main rope elongation sensor Expired - Fee Related CN1243658C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2000/008673 WO2002046082A1 (en) 2000-12-07 2000-12-07 Elevator main rope elongation sensor

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Publication Number Publication Date
CN1433372A true CN1433372A (en) 2003-07-30
CN1243658C CN1243658C (en) 2006-03-01

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EP (1) EP1357073A4 (en)
JP (1) JPWO2002046082A1 (en)
CN (1) CN1243658C (en)
WO (1) WO2002046082A1 (en)

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CN101484815B (en) * 2004-03-16 2011-10-05 奥蒂斯电梯公司 Tensile support strength monitoring system and method
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CN102448864A (en) * 2010-06-16 2012-05-09 Natac株式会社 Method for monitoring damage to wire rope for elevator and device for monitoring damage to wire rope for elevator
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CN102530692A (en) * 2012-03-20 2012-07-04 扬州凯思特机械有限公司 Method for performing intelligent compensation of elongation of steel wire rope during cage bearing
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CN1243658C (en) 2006-03-01
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EP1357073A4 (en) 2006-05-31
JPWO2002046082A1 (en) 2004-04-08

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