JP6341896B2 - Elevator equipment abnormality detection method - Google Patents

Description

  The present invention relates to a method for detecting an abnormality in an elevator device, and in particular, an abnormality in an elevator device suitable for detecting abnormalities such as wear of an elevator rope and uneven wear generated in a hoist sheave or a groove of each sheave. It relates to a detection method.

  In general, in an elevator of a type in which a machine room is not provided in the upper part of an elevator hoistway installed in a building, a plurality of ropes that are fixed between both ends of the rope and positioned between sheaves, It is installed on the other end via a car, a car side top sheave, a hoisting sheave, a counterweight sheave and a counterweight sheave, and the hoisting machine is driven to rotate by the hoisting machine. Thus, the elevator car is moved up and down by moving a plurality of ropes positioned between the above-described mesh wheels.

  In such an elevator, it is ideal that the same amount of tension acts on each rope positioned between the mesh wheels, but depending on the site, differences in the tensions of multiple ropes may occur due to the twisting of the rope. In this case, the acting tension becomes uneven, and the rope may be worn or abnormalities such as uneven wear may occur in the hoisting sheaves or the grooves of each sheave.

  As a conventional technique for measuring the tension of an elevator rope, in Patent Document 1, an acceleration sensor is attached to each of a plurality of ropes, and the rope is hit with a hammer, and output from each acceleration sensor at that time. A method for calculating the tension of the rope and calculating the rope tension indirectly is described.

  In addition, as a conventional technique for detecting an abnormality of a hoisting machine, in Patent Document 2, a camera and a microphone are installed in order to monitor the state of the hoisting machine. A method for transmitting the status of the machine to the maintenance center is described.

JP-A-7-209109 JP 2003-192248 A

  However, in the above-described prior art (Patent Document 1), the tension of each rope is measured, and when the measured tension is uneven, the tension of each rope is adjusted. No consideration is given to the detection of abnormalities such as wear and uneven wear of hoisting sheaves or grooves on each sheave.

  In the above-described prior art (Patent Document 2), an abnormality of the hoisting machine is detected remotely using a camera and a microphone, and the microphone and the camera are automatically scanned at the position of the abnormality and a signal is transmitted to the maintenance center. However, no consideration is given to the detection of abnormalities such as rope wear and hoisting sheaves or uneven wear on the grooves of each sheave.

  The present invention has been made in view of the above points, and an object of the present invention is to provide an elevator device that can reliably detect abnormalities such as rope wear and hoisting sheaves or uneven wear of grooves of each sheave. It is to provide an abnormality detection method.

  In the elevator apparatus abnormality detection method of the present invention, in order to achieve the above object, the ropes fixed at both ends are connected to the first and second car lower sheaves, the car side top sheave, the hoisting from one end side. It is installed on the other end side via a machine sheave, a counterweight side top sheave and a counterweight sheave, and the hoisting machine is driven to rotate by the hoisting machine and the rope is moved to move the car Measure the tension of each rope between the devices located between the one end side and the other end side of the elevator that lifts and lowers each rope and each sheave, or each rope or each sheave. In the abnormality detection method for elevator equipment that detects an abnormality, the tension of each rope is measured with a tension measuring device, and the presence or absence of a change in the tension measurement value from the tension uniform state after the initial elongation of each rope is captured. , Each rope and Each sheave, or wherein the detecting the abnormality of the rope or the respective sheaves.

  According to the present invention, it is possible to reliably detect abnormalities such as rope wear and hoisting sheaves or uneven wear of grooves of each sheave.

It is a figure which shows schematic structure of the elevator with which one Example of the abnormality detection method of the elevator apparatus of this invention is applied. It is a schematic block diagram which shows the tension | tensile_strength measuring method of the rope at the time of applying one Example of the abnormality detection method of the elevator apparatus of this invention to the elevator shown in FIG. The figure for demonstrating the principle of the detection method of the abrasion of a rope wear or a hoisting machine sheave or the groove | channel of each sheave from the change of the rope tension measured value by one Example of the abnormality detection method of the elevator apparatus of this invention. It is. It is a flowchart which shows one Example of the abnormality detection method of the elevator apparatus of this invention.

  Hereinafter, an abnormality detection method for an elevator apparatus according to the present invention will be described based on the illustrated embodiment.

  FIG. 1 shows a schematic configuration of an elevator to which one embodiment of an abnormality detection method for an elevator device according to the present invention is applied.

  As shown in FIG. 1, the elevator 1 rotates a hoisting sheave 3 a by a hoisting machine 3 installed in a hoistway 2, and connects between devices between one end side and the other end side of a rope 4. The plurality of ropes 4 located at the position are moved to raise and lower the car 5 and the counterweight 6.

  The rope 4 that raises and lowers the car 5 and the counterweight 6 is fixed at one end by a car-side rope end 4a, a first car lower sheave 5a1, a second car lower sheave 5a2, and a car side top rope. The other end (the other end side) is fixed by a counterweight side rope end portion 4b via the wheel 5b, the hoisting sheave 3a, the counterweight side top sheave 6b, and the counterweight sheave 6a.

  The plurality of ropes 4 positioned between the devices between the one end side and the other end side of the rope 4 are always subjected to a constant tension, and the tension is applied to the car side rope end portion 4a and the counterweight side rope end. Managed by the unit 4b.

  However, the tension of the ropes 4 is not uniform, and the ropes 4 are stretched and worn between the devices between one end side and the other end side of the rope 4, and further, the hoisting machine sheave 3a. 1st car lower sheave 5a1, 2nd car lower sheave 5a2, car side top sheave 5b, counterweight side top sheave 6b, counterweight sheave 6a Since the tension fluctuates, it is necessary to measure the tension of each of the plurality of ropes 4 positioned between the devices between the one end side and the other end side of the rope 4 in order to detect these abnormalities.

  A method for measuring the tension of each of the plurality of ropes 4 positioned between the devices between the one end side and the other end side of the rope 4 for detecting an abnormality will be described with reference to FIG.

  As shown in FIG. 2, the method for measuring the tension of each of the plurality of ropes 4 positioned between the devices between the one end side and the other end side of the rope 4 is as follows. The car 5 is moved to the vicinity of the intermediate floor 8 in the hoistway 2 and the car 5 is stopped. The operator 7 uses a tension measuring device (for example, a spring balance) 9 to connect the rope 4c1 between the car-side rope end 4a and the first car lower sheave 5a1, the car-side top sheave 5b to the second car. Rope 4c2 between the car lower sheave 5a2, the rope 4c3 between the car side top sheave 5b and the hoisting sheave 3a, the rope 4c4 between the counterweight side top sheave 6b and the hoisting sheave 3a, the counterweight side The tension of the rope 4c5 between the top sheave 6b and the counterweight sheave 6a and the tension of the rope 4c6 between the counterweight-side rope end portion 4b and the counterweight sheave 6a are measured.

  The above-described tension measurement by the tension measuring device 9 is performed at the time of periodic inspection of the elevator 1, and it is possible to grasp the presence or absence of changes in the tension measurement values of the ropes 4c1, 4c2, 4c3, 4c4, 4c5 and 4c6. The ropes 4c1, 4c2, 4c3, 4c4, 4c5 and 4c6 are stretched and worn, and the hoisting machine sheave 3a, the first car lower sheave 5a1, the second car lower sheave 5a2, the car side top rope Abnormal wear of the groove of each sheave is detected for the car 5b, the counterweight side top sheave 6b, and the counterweight sheave 6a.

  The ropes 4c1, 4c2, 4c3, 4c4, 4c5 and 4c6 are subjected to changes in the tension measurement values, so that the ropes 4c1, 4c2, 4c3, 4c4, 4c5 and 4c6 are stretched and worn, and further, the hoisting machine sheave 3a, the first About the principle of the detection method of the partial wear of the groove | channel of each sheave on the lower sheave 5a1, 2nd car lower sheave 5a2, the car side top sheave 5b, the balance weight sheave 6b, the balance sheave 6a This will be described with reference to FIGS.

  FIG. 3 shows the tension on the vertical axis and the time on the horizontal axis. As an example, the change in time of the total three tensions of the tension T1 rope 10, the tension T2 rope 11, and the tension T3 rope 12 is shown. The tension T1 rope 10, the tension T2 rope 11, and the tension T3 rope 12 are obtained by extracting three arbitrary ropes from the ropes shown in FIGS.

  When the elevator 1 is newly installed or the rope 4 is replaced, the tension of a plurality of ropes 4 positioned between the respective devices between one end side and the other end side in the car side rope end portion 4a and the counterweight side rope end portion 4b. The rope 4c is twisted during installation, but the rope 4c1 between the car-side rope end 4a and the first car lower sheave 5a1, the car-side top sheave 5b-the second car A rope 4c2 between the lower sheave 5a2, a rope 4c3 between the car side top sheave 5b and the hoisting sheave 3a, a rope 4c4 between the counterweight side top sheave 6b and the hoisting sheave 3a, and a counterweight side top The tensions acting on the rope 4c5 between the sheave 6b and the counterweight sheave 6a and the rope 4c6 between the counterweight-side rope end portion 4b and the counterweight sheave 6a are non-uniform. When the tension of the ropes 4c1, 4c2, 4c3, 4c4, 4c5, and 4c6 is not uniform, when the car 5 and the counterweight 6 are moved up and down in the hoistway 2, the initial tension of the tension T1 rope 10 having the largest tension is increased. proceed. Accordingly, the tension T2 rope 11 having the next largest tension and the tension T3 rope 12 having the smallest tension are also smaller than the tension T1 rope 10, but the initial elongation similarly proceeds. The elongation rate of the initial elongation is tension T1 rope 10> tension T2 rope 11> tension T3 rope 12.

  When the initial elongation of the tension T1 rope 10, the tension T2 rope 11, and the tension T3 rope 12 proceeds, the respective tensions are temporarily substantially uniform on the tension uniform line 13 shown in FIG. At this time, the tension T1 rope 10 has been initially stretched, and beyond this, the tension T1 rope 10 is not initially stretched, while the tension T2 rope 11 and the tension T3 rope 12 are still initially stretched. In this state, when the car 5 and the counterweight 6 are moved up and down in the hoistway 2, the tension T2 rope 11 and the tension T3 rope 12 are initially stretched and the tension is decreased, but the tension T1 rope 10 is initially stretched. Since it is in a state that does not stretch initially, the tension continues to be applied.

  If this state continues, the tension T1 rope 10 does not extend, but the hoisting machine sheave 3a, the first car lower sheave 5a1, the second car lower sheave 5a2, the car side top sheave 5b, the counterweight side top Either the sheave 6b or the counterweight sheave 6a or the groove of each sheave will continue to wear, and the rope 4 will be worn and the hoisting sheave 3a, the first lower car sheave 5a1, the second lower car It leads to the partial wear of the groove | channel of each wheel 5a2, the car side top sheave 5b, the counterweight side top sheave 6b, and the counterweight sheave 6a.

  Wear and hoisting of the ropes 4c1, 4c2, 4c3, 4c4, 4c5, and 4c6, the first sheave car lower sheave 5a1, the second car lower sheave 5a2, the car side top sheave 5b, the counterweight Regarding the uneven wear of the sheaves of the side top sheave 6b and the counterweight sheave 6a, the tension of the tension T1 rope 10, the tension T2 rope 11, and the tension T3 rope 12 in the inspection periodically performed by the operator 7 By grasping the presence or absence of a change in the tension measurement value in the abnormality detection line 14 in which the tension of the tension T1 rope 10, the tension T2 rope 11, and the tension T3 rope 12 becomes non-uniform again from the uniform tension uniform line 13 Abnormality can be detected.

  In light of what has been described above, each rope 4c1, 4c2, 4c3, 4c4, 4c5 and 4c6 is worn and hoisted sheave 3a, first car lower sheave 5a1, second car lower sheave 5a2, car side A method of detecting the partial wear of the groove of each sheave of the top sheave 5b, the counterweight side sheave 6b, and the counterweight sheave 6a will be described with reference to FIGS. 2, 3, and 4. FIG.

  First, in a periodic inspection, the operator 7 gets on the car 5 and moves the car 5 to the vicinity of the intermediate floor 8 in the hoistway 2 to stop the car 5. The operator 7 uses the tension measuring device 9 to connect the rope 4c1 between the car side rope end 4a and the first car lower sheave 5a1, and the rope 4c2 between the car side top sheave 5b and the second car lower sheave 5a2. The rope 4c3 between the car side top sheave 5b and the hoisting sheave 3a, the rope 4c4 between the counterweight side top sheave 6b and the hoisting sheave 3a, the counterweight side top sheave 6b and the counterweight leash The respective tensions of the rope 4c5 between the wheels 6a and the rope 4c6 between the counterweight side rope end portion 4b and the counterweight sheave 6a are measured (step (hereinafter referred to as S) 1). It is confirmed whether or not the measurement value measured in S1 has changed from the tension measurement value in the uniform tension line 13 (S2).

  At this time, if there is no change from the measured tension value in the uniform tension line 13, the ropes 4c1, 4c2, 4c3, 4c4, 4c5 and 4c6 are worn and the hoisting sheave 3a, the first car lower sheave 5a1. The second car cage sheave 5a2, the car side top sheave 5b, the counterweight side sheave 6b, and the counterweight sheave 6a have no uneven wear on the sheaves of each sheave (S3). End.

  On the other hand, if there is a change from the tension measured value in the uniform tension line 13, the ropes 4c1, 4c2, 4c3, 4c4, 4c5 and 4c6 are worn and the hoisting sheave 3a, the first car lower sheave 5a1, Since the second sheave car lower sheave 5a2, the car side top sheave 5b, the counterweight side top sheave 6b, and the counterweight sheave 6a have uneven wear on the sheaves of each sheave (S4), so each rope 4c1 4c2, 4c3, 4c4, 4c5 and 4c6 wear and hoisting sheave 3a, first car lower sheave 5a1, second car lower sheave 5a2, car side top sheave 5b, counterweight side top sheave 6b, Balance weight sheave 6a Confirm the uneven wear of the groove of each sheave (S5).

  If there is a change in the measured tension value in the rope 4c1 between the car side rope end portion 4a and the first car lower sheave 5a1, between the car side rope end 4a and the first car lower sheave 5a1. The rope 4c1 is worn out, and the groove is unevenly worn in the first car lower sheave 5a1.

  If there is a change in measured tension in the rope 4c2 between the car side top sheave 5b and the second car lower sheave 5a2, the rope between the car side top sheave 5b and the second car under sheave 5a2 Wear is generated in 4c2, and uneven wear of the groove is generated in the car side top sheave 5b and the second car lower sheave 5a2.

  If there is a change in the tension measured on the rope 4c3 between the car side top sheave 5b and the hoisting sheave 3a, the rope 4c3 between the car side top sheave 5b and the hoisting sheave 3a Wear has occurred, and uneven wear of grooves has occurred in the car side top sheave 5b and the hoisting sheave 3a.

  If there is a change in the tension measurement value in the rope 4c4 between the counterweight side top sheave 6b and the hoisting sheave 3a, the rope 4c4 between the counterweight side top sheave 6b and the hoisting sheave 3a Wear has occurred, and uneven wear of grooves has occurred in the counterweight side top sheave 6b and the hoisting sheave 3a.

  When there is a change in the tension measurement value in the rope 4c5 between the counterweight side top sheave 6b and the counterweight sheave 6a, the rope 4c5 between the counterweight side top sheave 6b and the counterweight sheave 6a is worn. It has occurred, and uneven wear of the groove has occurred in the counterweight side top sheave 6b and the counterweight sheave 6a.

  When there is a change in the measured tension value in the rope 4c6 between the counterweight-side rope end portion 4b and the counterweight sheave 6a, the rope 4c6 between the counterweight-side rope end portion 4b and the counterweight sheave 6a is worn. It has occurred, and uneven wear of the groove has occurred in the counterweight sheave 6a.

  The operator 7 wears the ropes 4c1, 4c2, 4c3, 4c4, 4c5 and 4c6, and the hoisting sheave 3a, the first car lower sheave 5a1, the second car lower sheave 5a2, the car side top. Sheaves 5b, counterweight side top sheaves 6b, counterweight sheaves 6a are checked for abnormal wear in the grooves of each sheave, and parts are replaced as necessary.

  As in the present embodiment, the rope 4c1 between the car side rope end 4a and the first car lower sheave 5a1, the car side top sheave 5b and the second car lower sheave 5a2 by periodic inspection. Rope 4c2, Rope 4c3 between the car side top sheave 5b and the hoisting sheave 3a, Rope 4c4 between the counterweight side top sheave 6b and the hoisting sheave 3a, and the counterweight side top sheave 6b -The tension of the rope 4c5 between the counterweight sheaves 6a and the rope end 4b between the counterweight side sheaves 6a and the rope 4c6 between the counterweight sheaves 6a are measured. By grasping the presence or absence of changes, the ropes 4c1, 4c2, 4c3, 4c4, 4c5 and 4c6 are worn and hoisted sheaves 3a, the first car lower sheave 5a1, the second car lower sheave 5a2, the car Top sheave 5b, counterweight-side top sheave 6b, uneven wear of the grooves of the counterweight Tsumutsunasha 6a each sheave is reliably detectable.

  The present invention is not limited to the elevator 1 described above, and can also be applied to an elevator in which the hoisting machine 3 or the like is installed in a machine room. Further, the tension uniform line 13 (tension uniform state) in the present invention is not strictly limited to the fact that each tension is uniform, but each tension when the elevator 1 is newly installed or when the rope is replaced. What is necessary is just to set it as the time slot | zone which the width | variety of the variation gradually narrowed and was settled in the predetermined range. Actually, the variation range of each tension is narrowed, and it becomes a time zone for the transition when the tension spreads again.

  The present invention is not limited to the above-described embodiments, and includes various modifications. That is, the above-described embodiment has been described in detail for easy understanding of the present invention, and is not necessarily limited to one having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

  DESCRIPTION OF SYMBOLS 1 ... Elevator, 2 ... Hoistway, 3 ... Hoisting machine, 3a ... Hoisting machine sheave, 4 ... Rope, 4a ... Car side rope end part, 4b ... Counterweight side rope end part, 4c1 ... Car side Rope between the end of the rope and the first sheave below the car, 4c2 ... Rope between the top sheave on the car side and the second sheave below the car, 4c3 ... Rope between the top sheave on the car side and the sheave on the hoist 4c4 ... Rope between counterweight side top sheave and hoist sheave, 4c5 ... Rope between counterweight side top sheave and counterweight sheave, 4c6 ... Rope between counterweight side rope end and counterweight sheave, 5 ... ride Car, 5a1 ... First car lower sheave, 5a2 ... Second car lower sheave, 5b ... Car side top sheave, 6 ... Counterweight sheave, 6a ... Counterweight sheave, 6b ... Counterweight side sheave, 7 ... worker, 8 ... intermediate floor, 9 ... tension measuring device, 0 ... tension T1 rope, 11 ... tension T2 rope, 12 ... tension T3 rope, 13 ... tension uniform line, 14 ... abnormality detection line.

Claims (11)

The ropes fixed at both ends are connected to the first and second car lower sheaves, the car side top sheaves, the hoisting sheaves, the counterweight side sheaves and the counterweight sheaves from one end. It is installed on the end side, and is positioned between the one end side and the other end side of an elevator that drives the hoisting machine sheave to rotate by a hoisting machine and moves the rope to raise and lower the car. In the abnormality detection method of an elevator device that measures the tension of each rope between each device and detects the abnormality of each rope and each sheave, or each rope or each sheave,
The tension of each rope is measured with a tension measuring device, and each rope and each sheave, or An abnormality detection method for an elevator device, wherein abnormality of each rope or each sheave is detected. In the elevator apparatus abnormality detection method according to claim 1,
The one end side to which the rope is fixed is a car side rope end part, the other end side is a counterweight side rope end part, and a rope between the car side rope end part and the first car lower sheave, Rope between the car side top sheave and the second car lower sheave, the rope between the car top sheave and the hoist sheave, the rope between the counterweight side sheave and the hoist sheave The tension measuring device measures the tension of the rope between the counterweight side top sheave and the counterweight sheave, the rope between the counterweight side rope end and the counterweight sheave, and An abnormality of each rope and each sheave, or each rope or each sheave is detected by detecting whether or not a tension measurement value changes from a uniform tension state after initial elongation. Ta abnormality detection method of the device. In the elevator apparatus abnormality detection method according to claim 2,
The presence or absence of a change in the tension measurement value from the uniform tension state after the initial elongation of each rope is based on the abnormality detection line where the tension of each rope is non-uniform from the tension uniform line where the tension of each rope is uniform. A method for detecting an abnormality in an elevator device, characterized by the presence or absence of a change in tension measurement value. In the elevator apparatus abnormality detection method according to claim 3,
The detection of abnormality of each rope and each sheave, or each rope or each sheave is performed by the tension measuring device using the rope between the rope end portion on the car side and the sheave below the first car, A rope between the car-side top sheave and the second car lower sheave, a rope between the car-side top sheave and the hoist sheave, a rope between the counterweight side sheave and the hoist sheave, Step 1 for measuring the tension of the rope between the counterweight-side top sheave and the counterweight sheave, the tension between the counterweight-side rope end portion and the rope between the counterweight sheave, and the measured values measured in step 1 Step 2 for confirming whether or not there is a change from the tension measurement value in the uniform tension line, and in the confirmation in Step 2, if there is no change from the tension measurement value in the uniform tension line, Previous It is determined in step 3 that no abnormality has occurred in each sheave, or each rope or each sheave, and in the confirmation in step 2, the measured value measured in step 1 is the tension in the uniform tension line. In the case where there is a change from the measured value, in Step 4 for determining that each rope and each sheave, or in each rope or each sheave, an abnormality has occurred, An abnormality detection method for an elevator device, comprising: step 5 for confirming abnormality of each sheave, or each rope, or each sheave when abnormality is determined. In the elevator apparatus abnormality detection method according to claim 4,
If there is a change in the measured tension in the rope between the car-side rope end portion and the first car lower sheave, the rope between the car-side rope end portion and the first car lower sheave and the first car It is determined that an abnormality has occurred in a one-seat car lower sheave, or a rope between the car-side rope end portion and the first car lower sheave, or an abnormality in the first car lower sheave. Anomaly detection method. In the elevator apparatus abnormality detection method according to claim 4,
If there is a change in the measured tension in the rope between the car side top sheave and the second car bottom sheave, the rope between the car side top sheave and the second car bottom sheave and the ride Car side top sheave and second car lower sheave, or rope between car side top sheave and second car lower sheave, or car side top sheave and second car lower sheave A method for detecting an abnormality in an elevator device, characterized in that it is determined that a problem has occurred. In the elevator apparatus abnormality detection method according to claim 4,
If there is a change in the tension measured on the rope between the car side top sheave and the hoist sheave, the rope between the car side top sheave and the hoist sheave and the car side Abnormality has occurred in the top sheave and the hoist sheave, or the rope between the car side top sheave and the hoist sheave, or the car side top sheave and the hoist sheave. An abnormality detection method for elevator equipment, characterized in that: In the elevator apparatus abnormality detection method according to claim 4,
If there is a change in the tension measured at the rope between the counterweight side top sheave and the hoisting sheave, the rope between the counterweight side top sheave and the hoisting sheave and the counterweight side Abnormality has occurred in the top sheave and the hoisting sheave, or the rope between the counterweight side top sheave and the hoisting sheave, or the counterweight side top sheave and the hoisting sheave. An abnormality detection method for elevator equipment, characterized in that: In the elevator apparatus abnormality detection method according to claim 4,
If there is a change in the tension measurement value in the rope between the counterweight-side top sheave and the counterweight sheave, the rope between the counterweight-side top sheave and the counterweight sheave and the counterweight-side top rope Determining that an abnormality has occurred in the vehicle and the counterweight sheave, or the rope between the counterweight-side top sheave and the counterweight sheave, or the counterweight-side top sheave and the counterweight sheave. An abnormality detection method for an elevator device. In the elevator apparatus abnormality detection method according to claim 4,
When there is a change in the tension measurement value in the rope between the counterweight side rope end portion and the counterweight sheave, the rope between the counterweight side rope end portion and the counterweight sheave and the counterweight sheave, Or it is judged that abnormality has generate | occur | produced in the rope between the said balance weight side rope end part and the said balance weight sheave, or the said balance weight sheave, The abnormality detection method of the elevator apparatus characterized by the above-mentioned. In the elevator apparatus abnormality detection method according to any one of claims 1 to 10,
The abnormality detection method for an elevator apparatus, wherein the abnormality is wear of each rope and each sheave, or wear of each rope or uneven wear of a groove generated in each sheave.

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