WO2017022709A1 - 破断検出装置 - Google Patents

破断検出装置 Download PDF

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Publication number
WO2017022709A1
WO2017022709A1 PCT/JP2016/072512 JP2016072512W WO2017022709A1 WO 2017022709 A1 WO2017022709 A1 WO 2017022709A1 JP 2016072512 W JP2016072512 W JP 2016072512W WO 2017022709 A1 WO2017022709 A1 WO 2017022709A1
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WO
WIPO (PCT)
Prior art keywords
car
rope
fluctuation
sensor
detection unit
Prior art date
Application number
PCT/JP2016/072512
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
純一 饗場
太陽 文屋
博行 村上
大輔 中澤
大樹 福井
政彦 肥田
Original Assignee
三菱電機ビルテクノサービス株式会社
三菱電機株式会社
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 三菱電機ビルテクノサービス株式会社, 三菱電機株式会社 filed Critical 三菱電機ビルテクノサービス株式会社
Priority to JP2017533053A priority Critical patent/JP6436238B2/ja
Priority to KR1020187001289A priority patent/KR102028293B1/ko
Priority to DE112016003550.0T priority patent/DE112016003550T5/de
Priority to CN201680044980.2A priority patent/CN107922153B/zh
Publication of WO2017022709A1 publication Critical patent/WO2017022709A1/ja

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    • 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

Definitions

  • This invention relates to a break detection device.
  • an elevator car is suspended from a hoistway by a main rope.
  • the main rope is wound around a pulley such as a driving sheave of the hoist.
  • the main rope gradually deteriorates due to repeated bending deformation.
  • the strands constituting the main rope break.
  • the strand in which the strands are twisted may break.
  • the breakage of the strands or the breakage of the strand also occurs when a foreign object is caught between the main rope and the pulley.
  • the broken wire or strand protrudes from the surface of the main rope. For this reason, if the elevator is operated in a state where the strands or strands are broken, the broken strands or strands may come into contact with the equipment provided in the hoistway.
  • Patent Documents 1 and 2 describe an elevator apparatus.
  • a rope guide is provided on the driving sheave of the hoisting machine. Further, the vibration of the rope guide is detected by a sensor. Based on the vibration detected by the sensor, it is detected that the strand or the strand is broken.
  • a sensor for detecting a rope abnormality is provided in the vicinity of the driving sheave.
  • the sensor includes a detection member that is displaced by contact with a broken strand or strand.
  • the range through which the main rope passes (contacts) is predetermined for each pulley. For example, a certain range of the main rope passes through the drive sheave. The portion that passes through the drive sheave does not necessarily pass through the suspended suspension wheel. For this reason, if it is going to detect the break of a strand or the break of a strand using the sensor described in patent documents 1 or 2, it is necessary to attach a sensor near the plurality of pulleys around which the main rope was wound. For example, when a sensor is mounted in the vicinity of a suspension car of a counterweight, a signal line must be laid between the counterweight and the control device.
  • the break detection device includes a first sensor whose output signal fluctuates when vibration generated in the rope reaches the first position of the rope, and when vibration generated in the rope reaches the second position of the rope. Based on the second sensor whose output signal fluctuates, the output signal from the first sensor, and the output signal from the second sensor, the vibration generated in the rope reaches the second position after reaching the first position.
  • a break detection device includes a sensor in which an output signal varies when vibration generated in a main rope of an elevator reaches the first position of the main rope, and a variation detection unit that detects variation in the output signal from the sensor. And a variation determination unit that determines whether or not the variation detected by the variation detection unit exceeds a threshold, and the sensor detects the maximum variation when the variation determination unit determines that the variation exceeds the threshold.
  • a car position detection unit for detecting a car position at the time, and a break determination unit for determining whether or not a break portion exists in the main rope based on a plurality of car positions detected by the car position detection unit. .
  • the break detection device can detect a break position of a strand or a strand with a simple configuration.
  • the occurrence of breakage of the strands or strands can be detected with a simple configuration.
  • FIG. It is a figure for demonstrating the function of the fracture
  • FIG. 1 is a diagram schematically illustrating the configuration of an elevator apparatus. First, the configuration of the elevator apparatus will be described with reference to FIG.
  • the car 1 moves up and down the hoistway 2.
  • the hoistway 2 is, for example, a space formed in a building and extending vertically.
  • the counterweight 3 moves up and down the hoistway 2.
  • the car 1 and the counterweight 3 are suspended from the hoistway 2 by the main rope 4.
  • the roping method for suspending the car 1 and the counterweight 3 is not limited to the example shown in FIG.
  • the car 1 and the counterweight 3 may be suspended from the hoistway 2 by 1: 1 roping.
  • an example in which the car 1 and the counterweight 3 are suspended by 2: 1 roping will be specifically described.
  • One end of the main rope 4 is supported by the fixed body of the hoistway 2.
  • one end of the main rope 4 is supported by a fixed body provided at the top of the hoistway 2.
  • the main rope 4 extends downward from one end.
  • the main rope 4 is wound around the suspension wheel 5, the suspension vehicle 6, the return wheel 7, the driving sheave 8, the return wheel 9, and the suspension wheel 10 sequentially from one end side.
  • the main rope 4 extends upward from the suspension wheel 10.
  • the other end of the main rope 4 is supported by the fixed body of the hoistway 2.
  • the other end of the main rope 4 is supported by a fixed body provided at the top of the hoistway 2.
  • one end of the main rope 4 that is close to the car 1 is referred to as a car-side terminal.
  • the other end close to the counterweight 3 is called a weight side terminal.
  • the hanging car 5 and the hanging car 6 are provided in the car 1.
  • the suspension vehicle 5 and the suspension vehicle 6 are installed, for example, in a rotatable state at the lower part of the car floor.
  • the return wheel 7 and the return wheel 9 are installed in a rotatable state at the top of the hoistway 2, for example.
  • the driving sheave 8 is provided in the hoisting machine 11.
  • the hoisting machine 11 is provided in the pit of the hoistway 2, for example.
  • the suspension vehicle 10 is provided on the counterweight 3.
  • the suspension vehicle 10 is installed in a rotatable state on an upper portion of a frame that supports a weight, for example.
  • the arrangement of the pulley around which the main rope 4 is wound is not limited to the example shown in FIG.
  • the drive sheave 8 may be disposed in the top of the hoistway 2 or in a machine room (not shown) above the hoistway 2.
  • ⁇ Weighing device 12 detects the load of car 1.
  • the scale device 12 detects the load of the car 1 based on, for example, the load applied to the car side terminal of the main rope 4.
  • the scale device 12 outputs a scale signal corresponding to the detected load.
  • the scale signal output from the scale device 12 is input to the control device 13.
  • Accelerometer 14 detects the acceleration of the car 1.
  • the car 1 is guided by a guide rail (not shown) and moves in the vertical direction. For this reason, the accelerometer 14 detects the vertical acceleration of the car 1.
  • the accelerometer 14 is provided in the car 1, for example.
  • the accelerometer 14 outputs an acceleration signal corresponding to the detected acceleration.
  • the acceleration signal output from the accelerometer 14 is input to the control device 13.
  • the hoisting machine 11 has a function of detecting torque.
  • the hoisting machine 11 outputs a torque signal corresponding to the detected torque.
  • the torque signal output from the hoisting machine 11 is input to the control device 13.
  • the governor 15 operates the emergency stop (not shown) to stop the car 1 when the descending speed of the car 1 exceeds the reference speed.
  • the governor 15 includes a governor rope 16, a governor sheave 17, and an encoder 18, for example.
  • the speed control rope 16 is wound around the speed control sheave 17 and moves in conjunction with the car 1.
  • the encoder 18 outputs a rotation signal corresponding to the rotation direction and rotation angle of the governing sheave 17.
  • the rotation signal output from the encoder 18 is input to the control device 13.
  • FIG. 2 is a perspective view showing the return wheel 9.
  • FIG. 3 is a view showing a cross section of the return wheel 9.
  • a stopper 19 is provided on a member that supports the return wheel 9. The stopper 19 prevents the main rope 4 from coming off the groove of the return wheel 9. For example, the stopper 19 faces the portion of the main rope 4 wound around the groove of the return wheel 9 with a slight gap. If there is no abnormality in the main rope 4, the main rope 4 does not contact the stopper 19.
  • FIG. 2 and 3 show a state in which the strands constituting the main rope 4 or the strands in which the strands are twisted are broken.
  • the portion of the main rope 4 where the strands or strands are broken is referred to as a broken portion 4a.
  • rupture part 4a protrudes from the surface of the main rope 4 as shown in FIG.2 and FIG.3. For this reason, when the car 1 moves, the breaking portion 4 a comes into contact with the stopper 19 when passing through the return wheel 9.
  • the suspension wheel 5 the suspension vehicle 6, the return wheel 7, the driving sheave 8, and the suspension wheel 10 are also provided with a detent having the same function as the detent 19.
  • FIG. 4 to 6 are views for explaining a state in which the fracture portion 4a of the main rope 4 moves.
  • FIG. 4 shows a state where the car 1 is stopped at the lowest floor landing.
  • FIG. 4 shows an example in which a broken portion 4 a exists between portions of the main rope 4 wound around the suspension vehicle 5 from the car-side terminal. In a state where the car 1 is stopped at the landing on the lowermost floor, the breaking portion 4a exists in the vicinity of the suspension wheel 5.
  • FIG. 6 shows a state where the car 1 is stopped at the landing on the top floor.
  • FIG. 6 shows an example in which a broken portion 4 a exists in a portion of the main rope 4 disposed between the return wheel 7 and the drive sheave 8.
  • the broken portion 4 a exists in the vicinity of the return wheel 7. That is, when the car 1 moves from the lowest floor landing to the top floor landing, the breaking portion 4a sequentially passes through the suspension car 5, the suspension car 6, and the return wheel 7. Even if the car 1 moves from the lowest floor landing to the top floor landing, the breaking portion 4a does not pass through the driving sheave 8, the return wheel 9, and the suspension wheel 10.
  • FIG. 5 shows a state where the car 1 is moving from the lowest floor to the top floor. Specifically, FIG. 5 shows a state when the fractured portion 4 a is passing through the suspension wheel 5. The breaking portion 4 a contacts the stopper when passing through the suspension wheel 5.
  • FIG. 7 and 8 are diagrams showing sensor signal output. 7 and 8, (a) shows the position of the car 1 when the car 1 travels between the positions P from the lowest floor.
  • the waveform shown in FIG. 7 and FIG. 8A is acquired based on, for example, a rotation signal from the encoder 18.
  • FIG. 7 and 8 shows the loading load of the car 1.
  • the waveform shown in FIG. 7 and FIG. 8B is a waveform of a scale signal output from, for example, the scale device 12 when the load of the car 1 is w.
  • C) of FIG.7 and FIG.8 shows the torque of the winding machine 11.
  • FIG. 7 and FIG. 8C are output from the hoisting machine 11 when the maximum torque when the car 1 moves from the lowest floor to the position P is T q1 and the minimum torque is ⁇ T q2. It is the waveform of the torque signal made.
  • FIG. 7 and FIG. 8D show the vertical acceleration of the car 1.
  • the waveforms shown in FIG. 7 and FIG. 8D show the acceleration signal output from the accelerometer 14 when the car 1 moves from the lowest floor to the position P with the maximum acceleration a 1 and the maximum deceleration a 2 . It is a waveform.
  • FIG. 7 shows an example of a waveform when the main rope 4 does not have the fracture portion 4a.
  • FIG. 8 there are breaks 4a in the main ropes 4 shows an example of the waveform as it passes through the pulley is broken portion 4a when the car 1 moves between the positions P 2 from the position P 1.
  • the breaking part 4a contacts the stopper when passing through the pulley. Thereby, when the fracture
  • FIG. When the car side terminal of the main rope 4 is displaced, the scale signal output from the scale device 12 is affected. For this reason, when vibration occurs in the main rope 4, the scale signal from the scale device 12 varies.
  • the torque signal output from the hoisting machine 11 is affected. For this reason, when vibration occurs in the main rope 4, the torque signal from the hoisting machine 11 varies. Further, when the portion of the main rope 4 wound around the suspension vehicle 5 or the portion wound around the suspension vehicle 6 is displaced, the acceleration signal output from the accelerometer 14 is affected. For this reason, when vibration occurs in the main rope 4, the acceleration signal from the accelerometer 14 varies.
  • FIG. 9 is an enlarged view of a main part of FIG.
  • FIG. 9B is an enlarged view of the waveform from time t 1 to time t 2 in FIG. 8B.
  • (C) in FIG. 9 is an enlarged view of a waveform from time t 1 to time t 2 of FIG. 8 (c).
  • FIG. 9 shows an example in which the rupture portion 4a exists between the portions of the main rope 4 wound around the drive sheave 8 from the car side terminal when the rupture portion 4a comes into contact with the stopper. Further, FIG. 9 shows that the length of the main rope 4 from the car-side end to the breaking portion 4a when the breaking portion 4a comes into contact with the stopper is from the portion wound around the driving sheave 8 to the breaking portion 4a. An example shorter than the length of the main rope 4 is shown.
  • rupture part 4a contacts a come-off stop propagates toward the cage
  • the length of the main rope 4 from the car-side end to the breaking portion 4a is shorter than the length of the main rope 4 from the portion wound around the drive sheave 8 to the breaking portion 4a. For this reason, the fluctuation component of the scale signal due to the vibration appears earlier than the fluctuation component of the torque signal.
  • FIG. 9 shows an example in which the fluctuation due to the vibration appears in the torque signal after the time ⁇ t has elapsed since the fluctuation signal appears in the scale signal.
  • FIG. 10 is a diagram showing a configuration example of the breakage detection apparatus according to Embodiment 1 of the present invention.
  • FIG. 11 is a diagram for explaining the function of the breakage detection apparatus shown in FIG.
  • FIG. 11A shows a state in which the main rope 4 shown in FIG. 1 is extended in a straight line.
  • FIGS. 11B to 11D show the positions of the pulleys with respect to the main rope 4.
  • a pulley indicated by a double circle is a fixed pulley.
  • a pulley indicated by a normal circle is a moving pulley.
  • FIG. 11B shows the position of each pulley when the car 1 is stopped at the landing on the lowest floor.
  • FIG. 11C shows the position of each pulley when the car 1 is stopped at the landing on the top floor.
  • a black circle shows the position of each pulley when the cage
  • FIG. 11 shows the position of each pulley when the fracture
  • FIG. The breaking portion 4 a contacts the stopper when passing through the suspension wheel 5.
  • the main rope 4 is vibrated. The vibration generated in the main rope 4 propagates from the generation position toward the car side terminal and the weight side terminal of the main rope 4.
  • the control device 13 includes, for example, a fluctuation detection unit 20, a time detection unit 21, a position detection unit 22, a distance calculation unit 23, a fluctuation determination unit 24, a car position detection unit 25, a break determination unit 26, an operation control unit 27, and a notification unit 28. Is provided.
  • FIG. 12 is a flowchart showing an operation example of the breakage detection apparatus according to Embodiment 1 of the present invention.
  • the fluctuation detection unit 20 detects a fluctuation of the sensor signal (S101).
  • S101 sensor signal
  • the fluctuation detection unit 20 detects a fluctuation of the scale signal.
  • variation detection part 20 detects the fluctuation
  • FIG. 13 is a diagram for explaining an example of the function of the fluctuation detection unit 20.
  • the fluctuation detector 20 calculates, for example, a differential value u of the scale signal. Thereby, the high frequency component of the scale signal is extracted. Next, the fluctuation detecting unit 20 calculates a square integral value of the calculated differential value u. Thereby, the extracted high frequency component is amplified. The fluctuation detection unit 20 performs the same process on the torque signal. The fluctuation detection unit 20 calculates, for example, a square integral value of the differential value u of the torque signal.
  • the method for detecting the fluctuation of the sensor signal is not limited to the above example.
  • the fluctuation detection unit 20 may detect fluctuations in the sensor signal by other methods.
  • the time detection unit 21 detects the time ⁇ t described with reference to FIG. 9 (S102). In the example shown in the present embodiment, the time detector 21 detects the time ⁇ t based on the scale signal and the torque signal.
  • the scale signal fluctuates when the vibration generated in the main rope 4 reaches the support position (first position) of the car-side terminal of the main rope 4.
  • the torque signal fluctuates when the vibration generated in the main rope 4 reaches a position (second position) where the main rope 4 is wound around the drive sheave 8.
  • the vibration generated in the main rope 4 is at the first position for the time ⁇ t. This corresponds to the time taken from reaching the second position.
  • the time detection unit 21 detects, for example, a difference between the time when the change occurs in the scale signal and the time when the change occurs in the torque signal as the time ⁇ t.
  • the time detection unit 21 detects the time ⁇ t based on the change in the scale signal detected by the change detection unit 20 and the change in the torque signal.
  • the position detection unit 22 detects the position of the broken portion 4a of the main rope 4 (S103).
  • the position detection unit 22 detects the position of the breaking portion 4a based on the distance between the first position and the second position on the main rope 4 and the time ⁇ t detected by the time detection unit 21.
  • the time ⁇ t can be obtained by the following equation.
  • X 1 is a distance in the main ropes 4 to the first position from the generation position of the vibration.
  • X 1 is a length of the main ropes 4 to the supporting position of the breaking portion 4a Karakago terminal.
  • X 2 is a distance in the main ropes 4 to the second position from the generation position of the vibration.
  • X 2 is the length of the main ropes 4 from the broken part 4a to wound around a position on the drive sheave 8.
  • X 1 and X 2 are distances on the main rope 4 when vibration occurs in the main rope 4, that is, when the fracture portion 4 a comes into contact with the stopper.
  • v is the speed of vibration propagating through the main rope 4.
  • L is the distance on the main rope 4 from the first position to the second position.
  • L X 1 + X 2 .
  • the distance on the main rope 4 is expressed as “rope distance”.
  • the speed v is known. Therefore, if the time ⁇ t and the rope distance L are known, the vibration generation position, that is, the position of the fracture portion 4a can be specified.
  • the first position is a support position of the car-side terminal of the main rope 4.
  • the second position is a position where the main rope 4 is wound around the driving sheave 8.
  • the main rope 4 is wound around a suspension wheel 5 and a suspension wheel 6 which are moving pulleys.
  • the rope distance L changes according to the position (height) of the suspension vehicle 5 and the suspension vehicle 6, that is, the position (height) of the car 1.
  • the distance calculation unit 23 calculates the rope distance L based on the positions of the suspension vehicle 5 and the suspension vehicle 6, that is, the position of the car 1.
  • the distance calculation unit 23 calculates the position of the car 1 based on, for example, a rotation signal from the encoder 18.
  • the position detector 22 calculates the rope distance X 1 based on the rope distance L calculated by the distance calculator 23 and the time ⁇ t detected by the time detector 21.
  • the rope distance L may be constant depending on the sensor signal employed. In such a case, it is not necessary to provide the distance calculation unit 23 in the control device 13.
  • the position of the break portion 4a can be detected with a simple configuration.
  • FIG. 14 is a flowchart showing another operation example of the breakage detection apparatus. For example, the operation flow shown in FIG. 14 is performed in parallel with the operation flow shown in FIG.
  • the fluctuation detection unit 20 detects fluctuations in the sensor signal.
  • the fluctuation detection unit 20 calculates, for example, a square integral value of the differential value u of the scale signal.
  • variation detection part 20 calculates the square integral value of the differential value u of a torque signal, for example.
  • the fluctuation determination unit 24 determines whether or not the fluctuation detected by the fluctuation detection unit 20 exceeds a threshold value (S112).
  • a threshold for comparison with the fluctuation detected by the fluctuation detector 20 is stored in the control device 13 in advance. If the fluctuation detected by the fluctuation detector 20 exceeds the threshold and is not determined by the fluctuation determiner 24, the operation controller 27 continues normal operation (S116).
  • the car position detection unit 25 detects the car position when the sensor detects the maximum fluctuation under a certain condition. Is detected (S113).
  • the break determination unit 26 determines whether or not the break portion 4a exists in the main rope 4 (S114).
  • the break determination unit 26 performs the above determination based on a plurality of car positions detected by the car position detection unit 25.
  • the operation control unit 27 continues the normal operation (S116).
  • the break determination unit 26 determines, for example, that the break portion 4a exists in the main rope 4 when a plurality of car positions detected by the car position detection unit 25 are within a certain range (reference range) ( Yes in S114).
  • the reference range is set to a range in which the car position can be regarded as the same position, for example.
  • the operation control unit 27 stops the car 1 at the nearest floor (S115).
  • the operation control unit 27 may perform other emergency operations.
  • the reporting part 28 will report to the exterior (S115). For example, the reporting unit 28 reports to the elevator maintenance company information indicating that the broken portion 4a exists in the main rope 4 and information on the position of the broken portion 4a detected by the position detecting unit 22.
  • FIG. 15 is a diagram for explaining an example of the break determination function of the control device 13.
  • the car position detection unit 25 detects the car position when the maximum value is detected among the values u 2 obtained by squaring the differential value u of the sensor signal, for example.
  • the car position detection unit 25 performs the above detection based on the value u 2 calculated by the fluctuation detection unit 20 and the rotation signal input from the encoder 18. Also, car position detection unit 25, the square integral value of the differential value u of the sensor signal is determined by a variation determination unit 24 exceeds the threshold value, the controller your location or value u 2 becomes maximum at the time 13 is stored.
  • the change determination unit 24 determines that the square integral value of the differential value u of the sensor signal exceeds the threshold value, the sensor is at its maximum between the last stop of the car 1 at the reference floor and the point The position of the car when the change (value u 2 ) is detected is newly stored in the control device 13.
  • the break determination unit 26 determines whether or not the break portion 4 a has occurred in the main rope 4 based on the car position stored in the control device 13. The break determination unit 26 determines, for example, that the break portion 4a exists in the main rope 4 if a certain number or more of the car positions stored in the control device 13 are within the reference range. Conditions for determining the presence of the fracture portion 4a are set as appropriate.
  • the break detection device has the above-described configuration, it can be detected with a simple configuration that the break portion 4a has occurred in the main rope 4.
  • the fluctuation detection unit 20 does not calculate the square integral value of the differential value u of the sensor signal while the car 1 is stopped.
  • the time detection unit 21 performs processing necessary for time detection only when the car 1 is moving. With this configuration, the load on the control device 13 can be reduced.
  • Embodiment 2 FIG. In the first embodiment, the example in which the fluctuation detection unit 20 calculates the square integral value of the differential value u of the sensor signal has been described. In the present embodiment, an example will be described in which the fluctuation detection unit 20 detects the fluctuation of the sensor signal by another method.
  • FIG. 16 is a diagram for explaining an example of the function of the fluctuation detection unit 20.
  • FIG. 17 is a diagram for explaining an example of the break determination function of the control device 13.
  • the configuration and function of the break detection device not disclosed in the present embodiment are the same as the configuration and function disclosed in the first embodiment.
  • the hoisting machine 11 in the present embodiment includes an encoder 29 as shown in FIG.
  • the encoder 29 outputs a rotation signal corresponding to the rotation direction and rotation angle of the drive sheave 8.
  • the rotation signal output from the encoder 29 is input to the control device 13.
  • the fluctuation detection unit 20 calculates the vertical acceleration of the car 1 based on the rotation signal output from the encoder 29 of the hoisting machine 11.
  • the fluctuation detection unit 20 may perform the above calculation using an equation of motion expressing the rigidity of the main rope 4 and the dynamic characteristics of the elevator.
  • the fluctuation detection unit 20 detects the fluctuation of the acceleration signal output from the accelerometer 14 by comparing the acceleration calculated using the rotation signal output from the encoder 29 with the acceleration signal from the accelerometer 14.
  • the hoisting machine 11 includes an electric motor for driving the driving sheave 8.
  • the electric motor is controlled so as to cancel out speed fluctuations. Due to the effect of such speed control, the fluctuation component appearing in the rotation signal from the encoder 29 becomes smaller than the fluctuation component appearing in the acceleration signal from the accelerometer 14. As shown in FIG. 16, the fluctuation of the acceleration signal output from the accelerometer 14 is detected by obtaining the difference e between the acceleration calculated using the rotation signal output from the encoder 29 and the acceleration signal from the accelerometer 14. be able to.
  • the fluctuation detecting unit 20 calculates the vertical acceleration of the car 1 using the scale signal from the scale device 12.
  • the fluctuation detection unit 20 detects the fluctuation of the scale signal output from the scale device 12 by comparing the acceleration calculated using the rotation signal output from the encoder 29 and the acceleration calculated using the scale signal. Due to the effect of speed control by the hoisting machine 11, the fluctuation component appearing in the rotation signal from the encoder 29 is smaller than the fluctuation component appearing in the scale signal from the scale device 12. By obtaining a difference e between the acceleration calculated using the rotation signal output from the encoder 29 and the acceleration calculated using the scale signal, the fluctuation of the scale signal output from the scale device 12 can be detected.
  • the time detection unit 21 detects the time ⁇ t based on the acceleration signal from the accelerometer 14 and the scale signal from the scale device 12.
  • the scale signal fluctuates when the vibration generated in the main rope 4 reaches the support position (first position) of the car-side terminal of the main rope 4.
  • the acceleration signal fluctuates when the vibration generated in the main rope 4 reaches a position (second position) where the main rope 4 is wound around the suspension vehicle 5 or the suspension vehicle 6.
  • the time detection unit 21 detects, for example, the difference between the time when the acceleration signal fluctuates and the time when the fluctuation signal fluctuates as the time ⁇ t.
  • the time detection unit 21 detects the time ⁇ t based on the change in the acceleration signal detected by the change detection unit 20 and the change in the scale signal.
  • the distance calculation unit 23 calculates the rope distance between the first position and the second position.
  • the position detection unit 22 detects the position of the breaking portion 4 a based on the rope distance L calculated by the distance calculation unit 23 and the time ⁇ t detected by the time detection unit 21.
  • the rope distance L may be constant depending on the sensor signal employed. In such a case, it is not necessary to provide the distance calculation unit 23 in the control device 13.
  • the position of the break portion 4a can be detected with a simple configuration. This is particularly effective in a 2: 1 roping type elevator apparatus in which a large number of pulleys are used.
  • the car position detection unit 25 detects the car position when the maximum value among the differences e is detected.
  • the car position detection unit 25 performs the above detection based on the difference e calculated by the variation detection unit 20 and the rotation signal input from the encoder 18.
  • the car position detection unit 25 causes the control device 13 to store the car position at which the difference e is maximum.
  • the fluctuation detection by the fluctuation detection unit 20 and the car position detection by the car position detection unit 25 are initialized.
  • the difference e exceeds the threshold
  • the change is determined by the change determination unit 24
  • the sensor detects the maximum change (difference e) between the time when the car 1 was last stopped on the reference floor and until that time.
  • the car position is newly stored in the control device 13.
  • the break determination unit 26 determines whether or not the break portion 4 a has occurred in the main rope 4 based on the car position stored in the control device 13. The break determination unit 26 determines, for example, that the break portion 4a exists in the main rope 4 if a certain number or more of the car positions stored in the control device 13 are within the reference range. Conditions for determining the presence of the fracture portion 4a are set as appropriate.
  • the subsequent sensor signal fluctuation detection is performed only in the peripheral section including the car position stored in the control device 13. May be.
  • Embodiment 3 FIG. In Embodiment 1 and 2, the example which determines the presence or absence of the fracture
  • an example of an emergency operation performed after the presence of the fracture portion 4a is detected will be described.
  • the control device 13 performs a diagnostic operation for reconfirming that the broken portion 4a exists in the main rope 4 on the condition that the inside of the car 1 is unmanned.
  • FIG. 18 is a flowchart showing an operation example of the breakage detection apparatus according to Embodiment 3 of the present invention.
  • the processes in S101 and S112 to S116 in FIG. 18 are the same as the processes disclosed in the first or second embodiment. For this reason, detailed description is omitted as appropriate.
  • the fluctuation detection unit 20 detects a fluctuation of the sensor signal (S101).
  • the fluctuation determination unit 24 determines whether or not the fluctuation detected by the fluctuation detection unit 20 exceeds a threshold value (S112). If the fluctuation detected by the fluctuation detector 20 exceeds the threshold and is not determined by the fluctuation determiner 24, the operation controller 27 continues normal operation (S116).
  • the car position detection unit 25 detects the car position when the sensor detects the maximum fluctuation under a certain condition. Is detected (S113).
  • the break determination unit 26 determines whether or not the break portion 4a exists in the main rope 4 (S114).
  • the break determination unit 26 performs the above determination based on, for example, a plurality of car positions detected by the car position detection unit 25.
  • the operation control unit 27 continues the normal operation (S116). For example, when the plurality of car positions detected by the car position detection unit 25 are within the reference range, the break determination unit 26 determines that the main rope 4 has the break part 4a (Yes in S114). .
  • the operation control unit 27 stops the car 1 at the nearest floor.
  • the operation control unit 27 opens the door when the car 1 is stopped at the nearest floor.
  • the operation control unit 27 makes an announcement to prompt passengers in the car 1 to get off the car 1 (S127).
  • the operation control unit 27 determines whether or not the car 1 is unattended (S128). For example, the operation control unit 27 performs the determination of S128 based on a scale signal from the scale device 12. The operation control unit 27 may make the above determination based on a signal from another device. For example, a camera is installed in the car 1. The operation control unit 27 may determine whether or not the car 1 is unattended based on the image signal from the camera. If it is not possible to determine that the interior of the car 1 is unattended, the operation control unit 27 makes an announcement for prompting the passenger to exit the car 1 (S127).
  • the operation control unit 27 determines that the car 1 is unmanned (Yes in S128). When it is determined that the car 1 is unattended, the operation control unit 27 closes the door and performs a diagnostic operation (S129). In the diagnostic operation, for example, the car 1 is run and reciprocated once between the lowest floor and the highest floor. In the diagnostic operation, the car 1 may reciprocate a plurality of times from the lowest floor to the highest floor.
  • the break determination unit 26 determines whether or not the break portion 4a exists in the main rope 4 (S1210). If the break determination unit 26 does not determine that the broken portion 4a exists in the main rope 4 (No in S1210), the operation control unit 27 ends the diagnostic operation and returns to the normal operation (S1211).
  • the break determining unit 26 determines that the main rope 4 has the broken part 4a (Yes in S1210). .
  • the operation control unit 27 stops the car 1 at the nearest floor.
  • the reporting part 28 will report to the exterior (S115). For example, the reporting unit 28 reports to the elevator maintenance company information indicating that the broken portion 4a exists in the main rope 4 and information on the position of the broken portion 4a detected by the position detecting unit 22.
  • the detection accuracy of the break portion 4a generated in the main rope 4 can be improved.
  • the fluctuation of the sensor signal also occurs when a passenger in the car 1 moves.
  • the diagnostic operation for reconfirming the existence of the breakage portion 4a is performed in an unmanned state in the car 1, it is possible to prevent erroneous detection due to passenger movement.
  • the round trip of the car 1 performed in the diagnostic operation is not limited between the lowest floor and the highest floor.
  • the position of the breaking portion 4a whose presence is detected in S114 may be specified by the position detection unit 22, and the car 1 may be reciprocated so that the pulley passes through the specified position.
  • the car 1 may be reciprocated only between specific floors where the pulley passes through the breaking portion 4a. With such a configuration, the time required for the diagnostic operation can be shortened.
  • the scale device 12, the torque detection function of the hoisting machine 11, and the accelerometer 14 are exemplified as sensors whose output signals fluctuate due to vibration generated in the main rope 4.
  • the sensor is not limited to these.
  • a device similar to the scale device 12 may be installed at the weight side terminal of the main rope 4.
  • the main rope 4 of the elevator is exemplified as a rope for detecting the position of the fractured portion and its occurrence.
  • the rope is not limited to this. For example, you may detect the break of the other rope currently used by the elevator with the break detection apparatus of the said structure. Moreover, you may implement the break detection of the rope used except the elevator by the break detection apparatus of the said structure.
  • FIG. 19 is a diagram illustrating a hardware configuration of the control device 13.
  • the control device 13 includes a circuit including, for example, an input / output interface 30, a processor 31, and a memory 32 as hardware resources.
  • the control device 13 implements the functions of the units 20 to 28 by executing the program stored in the memory 32 by the processor 31. Some or all of the functions of the units 20 to 28 may be realized by hardware.
  • the functions of the units 20 to 28 may be realized by executing a program on a computer on the cloud.
  • the results obtained by the units 20 to 28 are transmitted to the control device 13 through a network and communication.
  • the control device 13 may perform a necessary operation based on the received information.
  • the break detection device according to the present invention can be applied to a device using a rope.

Landscapes

  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
PCT/JP2016/072512 2015-08-05 2016-08-01 破断検出装置 WO2017022709A1 (ja)

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JP2017533053A JP6436238B2 (ja) 2015-08-05 2016-08-01 破断検出装置
KR1020187001289A KR102028293B1 (ko) 2015-08-05 2016-08-01 파단 검출 장치
DE112016003550.0T DE112016003550T5 (de) 2015-08-05 2016-08-01 Bruch-detektionseinrichtung
CN201680044980.2A CN107922153B (zh) 2015-08-05 2016-08-01 断裂检测装置

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112919288A (zh) * 2019-12-06 2021-06-08 东芝电梯株式会社 劣化判定方法
US20210188597A1 (en) * 2017-08-10 2021-06-24 Mitsubishi Electric Corporation Break detection device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112955395B (zh) * 2018-11-02 2023-05-12 通力股份公司 检测电梯轴承故障的装置
CZ2019196A3 (cs) * 2019-03-29 2020-10-07 Rieter Cz S.R.O. Způsob bezdotykové optické detekce příze na pracovním místě textilního stroje pro výrobu příze, optický snímač příze a textilní stroj
KR102466496B1 (ko) 2019-12-03 2022-11-11 주식회사 리틀캣 먹이보상이 가능한 반려동물용 운동장치
KR20210156967A (ko) 2020-06-19 2021-12-28 주식회사 리틀캣 먹이보상이 가능한 반려동물용 운동장치

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1081462A (ja) * 1996-09-06 1998-03-31 Hitachi Building Syst Co Ltd エレベータの異常診断装置
JP2002333431A (ja) * 2001-05-10 2002-11-22 Hitachi Building Systems Co Ltd ワイヤロープ診断測定装置
JP2007176627A (ja) * 2005-12-27 2007-07-12 Toshiba Elevator Co Ltd エレベータ
JP5203339B2 (ja) * 2009-02-24 2013-06-05 三菱電機株式会社 エレベータのロープ監視装置
JP2014108835A (ja) * 2012-11-30 2014-06-12 Mitsubishi Electric Building Techno Service Co Ltd エレベータのロープストランド破断検出装置及びロープストランド破断検出方法
JP2015078073A (ja) * 2011-03-08 2015-04-23 三菱電機株式会社 エレベーターの異常診断装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS523339B2 (de) 1972-01-12 1977-01-27
JPS507114B2 (de) 1972-03-02 1975-03-20
JPS523339A (en) 1975-06-27 1977-01-11 Agency Of Ind Science & Technol Information file system
JPS6017754A (ja) * 1983-07-12 1985-01-29 Ricoh Co Ltd 電子写真製版用印刷版
JPH08333066A (ja) * 1995-06-09 1996-12-17 Mitsubishi Denki Bill Techno Service Kk エレベーター用ロープ破断検出装置
JP4896692B2 (ja) 2006-12-08 2012-03-14 三菱電機ビルテクノサービス株式会社 メインロープ異常検出装置およびそれを備えたエレベータ装置
JP4415041B2 (ja) * 2007-10-10 2010-02-17 三菱電機ビルテクノサービス株式会社 ロープ点検方法
JP5118538B2 (ja) * 2008-04-07 2013-01-16 株式会社日立ビルシステム エレベーターのワイヤーロープ素線切れ診断システム
JP2011158871A (ja) * 2010-02-04 2011-08-18 Panasonic Corp プラズマディスプレイパネルの駆動方法
WO2014050618A1 (ja) * 2012-09-28 2014-04-03 日本電気株式会社 欠陥分析装置、欠陥分析方法及びプログラム
CN204038800U (zh) * 2014-08-11 2014-12-24 广州广日电梯工业有限公司 电梯曳引钢带断绳检测装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1081462A (ja) * 1996-09-06 1998-03-31 Hitachi Building Syst Co Ltd エレベータの異常診断装置
JP2002333431A (ja) * 2001-05-10 2002-11-22 Hitachi Building Systems Co Ltd ワイヤロープ診断測定装置
JP2007176627A (ja) * 2005-12-27 2007-07-12 Toshiba Elevator Co Ltd エレベータ
JP5203339B2 (ja) * 2009-02-24 2013-06-05 三菱電機株式会社 エレベータのロープ監視装置
JP2015078073A (ja) * 2011-03-08 2015-04-23 三菱電機株式会社 エレベーターの異常診断装置
JP2014108835A (ja) * 2012-11-30 2014-06-12 Mitsubishi Electric Building Techno Service Co Ltd エレベータのロープストランド破断検出装置及びロープストランド破断検出方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210188597A1 (en) * 2017-08-10 2021-06-24 Mitsubishi Electric Corporation Break detection device
CN112919288A (zh) * 2019-12-06 2021-06-08 东芝电梯株式会社 劣化判定方法
CN112919288B (zh) * 2019-12-06 2022-05-03 东芝电梯株式会社 劣化判定方法

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DE112016003550T5 (de) 2018-05-03
CN107922153A (zh) 2018-04-17
JP6436238B2 (ja) 2018-12-12
JPWO2017022709A1 (ja) 2018-02-01
CN107922153B (zh) 2019-07-19
KR102028293B1 (ko) 2019-10-02

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