WO2010024048A1 - エレベータ装置 - Google Patents

エレベータ装置 Download PDF

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Publication number
WO2010024048A1
WO2010024048A1 PCT/JP2009/062527 JP2009062527W WO2010024048A1 WO 2010024048 A1 WO2010024048 A1 WO 2010024048A1 JP 2009062527 W JP2009062527 W JP 2009062527W WO 2010024048 A1 WO2010024048 A1 WO 2010024048A1
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WIPO (PCT)
Prior art keywords
drive sheave
car
signal
state monitoring
detection means
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Application number
PCT/JP2009/062527
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English (en)
French (fr)
Japanese (ja)
Inventor
木川　弘
柴田　益誠
Original Assignee
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
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Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to CN200980133213.9A priority Critical patent/CN102131725B/zh
Priority to DE112009002129T priority patent/DE112009002129T5/de
Priority to JP2010526619A priority patent/JP5371991B2/ja
Publication of WO2010024048A1 publication Critical patent/WO2010024048A1/ja

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    • 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

Definitions

  • the present invention relates to an elevator apparatus having a state monitoring device for monitoring the state of a system such as a reduction in traction and a reduction in braking force.
  • the absolute position signal XABS of the car is compared with the position signal XIG of the motor (winding machine), and when the deviation between the two exceeds a certain threshold value, it is determined that the traction is reduced. And the car is urgently stopped.
  • the value of XIG when passing through the belt-shaped flag of the predetermined length provided on each floor is compared with the flag length, and when the deviation between the two becomes larger than a certain threshold, it is determined that traction reduction has occurred, The car is urgently stopped (see, for example, Patent Document 1).
  • the motor movement amount after the car stop command is detected is compared with the car movement amount, and if the motor movement amount is less than the threshold value and the car movement amount is more than the threshold value, the rope It is determined that slip (traction reduction) has occurred. Further, when there is no deviation between the motor movement amount after the car stop command is detected and the car movement amount and both exceed the threshold, it is determined that the braking force of the brake device has been reduced (for example, Patent Document 2). reference).
  • the conventional state monitoring apparatus as described above has problems in terms of detection responsiveness, elevator operation efficiency, monitorable range, required sensor accuracy, number of necessary sensors, and determination conditions.
  • Patent Document 1 the height of the entire hoistway is used as a reference, and data cannot be obtained unless the car moves through the entire hoistway. There is a problem with responsiveness. Moreover, if it is going to implement monitoring, it will interfere with elevator operation.
  • the flag length provided on each floor is used as a reference, so that the location where monitoring is possible is near the floor (here, the neighborhood is the flag length). It is limited to the distance corresponding to.
  • the threshold value is the amount of deviation from the motor corresponding to the flag length, and the flag length is generally about several tens of centimeters above and below the floor, so the threshold value must be set small. . For this reason, a sensor with higher accuracy than before is required as a sensor for obtaining a position signal of the motor (winding machine).
  • the traction reduction monitoring method using the first device requires two sensors, an absolute position sensor for the car and a position sensor for the motor.
  • the rope slip and braking force drop monitoring method using the second device has a problem that it can be monitored only when the car enters a stop operation. Furthermore, since the rope that suspends the car is an elastic body, the rope vibrates when a person gets on and off, but the motor does not vibrate because the stopped hoisting machine is held by a brake. For this reason, there is a problem that the above-described condition that there is no deviation between the motor movement amount after the car stop command is detected and the car movement amount is not realistic.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide an elevator apparatus that can perform state monitoring more accurately.
  • An elevator apparatus includes a car, a counterweight, a suspension body for suspending the car and the counterweight, a drive sheave around which the suspension body is wound, a motor for rotating the drive sheave, and braking of the rotation of the drive sheave.
  • a hoisting machine having a hoisting machine brake, a driving sheave side detecting means for generating a signal according to the rotation of the driving sheave, a suspension body side detecting means for generating a signal according to the movement of the car or the suspension, and
  • a state monitoring device is provided that monitors the state by comparing the deviation between the position signal from the drive sheave side detection means and the position signal from the suspension side detection means from the start to the stop with a predetermined threshold profile.
  • the elevator apparatus includes a car, a counterweight, a suspension body for suspending the car and the counterweight, a drive sheave around which the suspension body is wound, a motor for rotating the drive sheave, and rotation of the drive sheave.
  • Hoisting machine having hoisting machine brake for braking, driving sheave side detecting means for generating signal according to rotation of driving sheave, brake detecting means for detecting operation / non-operation of hoisting machine brake, hoisting machine
  • a state monitoring device is provided that monitors the state by comparing the speed signal acceleration amount from the drive sheave side detecting means during the operation of the brake with a predetermined speed threshold value.
  • the elevator apparatus includes a car, a counterweight, a suspension body for suspending the car and the counterweight, a drive sheave around which the suspension body is wound, a motor for rotating the drive sheave, and rotation of the drive sheave.
  • a hoist having a hoist brake for braking, a drive sheave side detecting means for generating a signal corresponding to the rotation of the drive sheave, and detecting that the car has moved in a preset inspection section in the hoistway
  • a state monitoring device is provided that monitors the state by comparing the deviation of the position signal of the drive sheave from the inspection section detection means and the drive sheave side detection means before and after the car reciprocated in the inspection section with a predetermined threshold value.
  • the elevator apparatus includes a car, a counterweight, a suspension body for suspending the car and the counterweight, a drive sheave around which the suspension body is wound, a motor for rotating the drive sheave, and rotation of the drive sheave.
  • a hoist having a hoist brake for braking, a drive sheave side detecting means for generating a signal corresponding to the rotation of the drive sheave, and detecting that the car has moved in a preset inspection section in the hoistway Inspection section detection means, equipped with a state monitoring device for monitoring the state by comparing the difference between the amount of drive sheave movement from the drive sheave side detection means before and after the car has moved one way in the inspection section with the length of the inspection section ing.
  • the monitoring range is not limited, and the length of each floor flag is set as the monitoring range. Sensor accuracy is not required compared to what you do. Further, since the rotation signal of the drive sheave is used as a reference, it is not easily affected by the vibration of the car or the suspension. Further, since the speed increase amount of the drive sheave after the hoisting machine brake is operated is used as a monitoring item and compared with the speed threshold value, it is hardly affected by the vibration of the car or the suspension. Further, it is possible to monitor not only when the car is stopped but also when the car is running. Furthermore, since the abnormality determination is performed based on the shift amount of the drive sheave position at the fixed position when the car travels through the inspection section in the hoistway, a means for detecting the movement amount of the car or the suspension is not necessary.
  • FIG. 1 is a block diagram showing an elevator apparatus according to Embodiment 1 of the present invention.
  • a car 1 and a counterweight 2 are suspended in a hoistway by a plurality of main ropes 3 as suspension bodies, and are raised and lowered in the hoistway by the driving force of the hoisting machine 4.
  • a plurality of belts may be used as the suspension.
  • a plurality of guide rails (not shown) for guiding the raising and lowering of the car 1 and the counterweight 2 are installed.
  • the hoisting machine 4 includes a driving sheave 5 around which the main rope 3 is wound, a motor 6 that rotates the driving sheave 5, and a hoisting machine brake 7 that brakes the rotation of the driving sheave 5.
  • an electromagnetic brake device is used as the hoisting machine brake 7, for example.
  • the brake shoe is pressed against the braking surface by the spring force of the braking spring, the rotation of the drive sheave 5 is braked, and the car 1 is braked. Further, by exciting the electromagnetic magnet, the brake shoe is pulled away from the braking surface, and the braking force is released. Furthermore, the braking force applied by the hoisting machine brake 7 is changed according to the current value that flows through the brake coil of the electromagnetic magnet.
  • a deflecting wheel 8 around which the main rope 3 is wound is provided in the vicinity of the drive sheave 5. Further, an emergency stop device 9 that brakes the car 1 by gripping the main rope 3 is provided in the vicinity of the baffle 8 at the fixed portion in the hoistway.
  • the motor 6 is provided with a motor encoder 11 as drive sheave side detection means (first detection means) that generates a signal corresponding to the rotation of the rotation shaft, that is, the rotation of the drive sheave 5.
  • the drive sheave side detecting means may be any means as long as it can detect the rotation amount of the drive sheave 5. For example, a resolver or a tachometer may be used.
  • the operation of the hoist 4 is controlled by the operation control device 12.
  • the operation control device 12 operates and stops the car 1 according to the call.
  • the operation control device 12 gives a command signal to the power conversion device 13, the relay 14, and the hoisting machine brake 7 in accordance with a signal obtained by converting the output from the motor encoder 11 into a speed.
  • the power conversion device 13 causes the car 1 to travel by supplying power to the motor 6 in accordance with a command from the operation control device 12.
  • the operation control device 12 opens the relay 14 to cut off the power supply to the motor 6, cut off the generation of motor torque, and operate the hoisting machine brake 7.
  • a governor rope 21 is wound around the governor pulley 20. Both ends of the governor rope 21 are connected to the car 1.
  • a tension wheel 22 for applying tension to the governor rope 21 is suspended from the lower end portion of the governor rope 21. Thereby, the governor pulley 20 is rotated in synchronization with the traveling of the car 1 and the movement of the main rope 3.
  • the governor pulley 20 has a governor encoder 23 as a suspension body side detection means (second detection means) that generates a signal corresponding to the rotation thereof (that is, a signal corresponding to the movement of the car 1 and the main rope 3).
  • the suspension body side detection means should just be a thing which can detect the position (movement amount) of the cage
  • the output signals of the motor encoder 11 and the governor encoder 23 are input to the state monitoring device 30.
  • the state monitoring device 30 monitors traction reduction based on the output signals of the motor encoder 11 and the governor encoder 23.
  • the state monitoring device 30 is a circuit that monitors traction reduction based on the positional deviation between the main rope 3 and the drive sheave 5.
  • FIG. 2 is a block diagram showing the configuration of the state monitoring device 30 of FIG.
  • the output of the governor encoder 23 is converted into a position signal D1 by a position converter 31.
  • the output of the motor encoder 11 is converted into a position signal D2 by the position converter 31.
  • the position signal D1 of the governor encoder 23 is converted into a speed signal V1 by the speed converter 32.
  • the speed signal V1 is converted into a speed signal V2 by the low-pass filter 33.
  • the cut-off frequency of the low-pass filter is changed according to the natural frequency of the elevator system, but is generally several Hz.
  • the determination unit 34 monitors the state of the elevator apparatus based on the position signals D1 and D2 and the speed signals V1 and V2. Moreover, if the determination part 34 determines with the abnormal condition having generate
  • the function of the determination unit 34 can be realized by, for example, a microcomputer or an analog logic circuit.
  • FIG. 3 is a flowchart showing the operation of the determination unit 34 of FIG.
  • the determination unit 34 starts monitoring if the speed signal V1 of the car 1 from the governor encoder 23 is equal to or greater than the speed threshold Vstart that is near zero and greater than zero (Step 1).
  • the determination unit 34 stores the position signal D2 from the motor encoder 11 as an initial value D0 (Step 2).
  • the monitoring loop by the determination unit 34 includes the following three steps. That is, first, the position deviation (
  • ) between the position information D1 of the car 1 from the governor encoder 23 and the position information D2 of the drive sheave 5 from the motor encoder 11 is calculated as the movement amount ( ⁇ D2) of the drive sheave 5 D2-D0
  • ) is compared with the profile F2, and if the position deviation is larger than F2, it is determined as abnormal and the output signal L2 is output (Step 4).
  • ) is compared with the profile F1, and if the position deviation is larger than F1, it is determined as abnormal and the output signal L1 is output (Step 5).
  • Threshold profiles F1, F2, and F3, which are determination criteria for position deviation satisfy F3> F2> F1 according to the traction reduction level. Then, the determination unit 34 compares the position deviation with the threshold profile, determines that the position deviation is abnormal, and outputs the output signals L1, L2, and L3 according to the excess level.
  • the output signal L1 is output to the operation control device 12 when it is determined that the follow-up level does not hinder the normal operation of the elevator apparatus.
  • the operation control device 12 records that the output signal L1 has been received, but does not issue a command to the hoist 4 or the emergency stop device 9.
  • the maintenance staff confirms the reception history of the output signal L1 in the operation control device 12, and if there is reception, carefully inspects the main rope 3 and the drive sheave 5.
  • the output signal L2 is output to the operation control device 12 when it is determined that the service stop level has a possibility of causing trouble in normal operation such as landing slip.
  • the operation control device 12 controls the power conversion device 13 to stop the car 1 at the nearest floor.
  • the stop deceleration at that time may be smaller than the normal stop deceleration.
  • the relay 14 is opened to cut off the power supply to the motor 6, cut off the generation of the motor torque, operate the hoisting machine brake 7, and lower the passenger. Then, a request for maintenance personnel is made through a telephone line or the like, and the service of the elevator apparatus is stopped.
  • the output signal L3 is output to the emergency stop device 9 when it is determined that the emergency stop level requires immediate stop.
  • the emergency stop device 9 is a fail-safe type brake device that grips the main rope 3 to brake the car 1 when the power is cut off, and the power supply to the emergency stop device 9 is cut off by the output signal L3. .
  • the speed signal V2 of the car 1 is compared with the speed threshold Vend (Step 6). If V2> Vend, the process returns to Step 3 and the monitoring loop is repeated. If V2 ⁇ Vend, the monitoring is terminated and the process returns to Step1.
  • Step 1 since the speed signal V1 is a speed signal of the car 1 that does not pass through the filtering process, in Step 1, the movement start of the car 1 can be quickly caught and monitoring can be started. Even when the rotation of the drive sheave 5 is stopped, the monitoring can be started immediately if the car 1 starts to move due to the slip of the main rope 3.
  • monitoring must be completed after confirming that the car 1 has stopped.
  • the speed of the car 1 vibrates, and it is difficult to determine the stop of the car 1 as it is.
  • a speed signal V2 obtained by performing low-pass filter processing on the speed signal V1 is used as a monitoring end determination speed.
  • the threshold value Vend may be set to zero.
  • the offset is reset at each stop as compared to the case where the position deviation is merely constantly monitored (in this case, the offset is integrated). , More accurate monitoring becomes possible. Further, since the position signal deviation between the car 1 and the drive sheave 5 from the start to the stop of the car 1 is set as a monitoring target, the monitoring range is not limited.
  • FIG. 4 is a graph showing a first example of position deviation threshold profiles F1, F2 and F3 used in the determination unit 34 of FIG. F1, F2, and F3 in the first example are represented by the following formulas (formulas (1) to (3)).
  • F1 ⁇ * ⁇ D2 + ⁇ 1
  • F2 ⁇ * ⁇ D2 + ⁇ 2
  • F3 ⁇ * ⁇ D2 + ⁇ 3 (3)
  • the coefficient ⁇ is large enough not to cause a malfunction based on the maximum value of the creep rate of the elevator system with respect to the movement amount of the drive sheave 5 (the slip ratio between the drive sheave 5 and the main rope 3 that occurs in the normal traveling state).
  • ⁇ 1 is, for example, based on the maximum value of the displacement vibration amplitude of the car 1 generated when the passenger shakes the car 1 with a predetermined force in the car 1, or based on the maximum value of the creep rate during car acceleration. It is set so large that it does not malfunction.
  • ⁇ 2 and ⁇ 3 are set such that ⁇ 1 ⁇ 2 ⁇ 3 with further allowance for preventing malfunction from ⁇ 1.
  • FIG. 5 is a graph showing a second example of the position deviation threshold profiles F1, F2, and F3 used in the determination unit 34 of FIG. F1, F2, and F3 in the second example are represented by the following equations (equations (4) to (6)).
  • F1 ⁇ 1 * ⁇ D2 + ⁇ (4)
  • F2 ⁇ 2 * ⁇ D2 + ⁇ (5)
  • F3 ⁇ 3 * ⁇ D2 + ⁇ (6)
  • the coefficient ⁇ 1 is the same as ⁇ in (Equation 1).
  • ⁇ 2 and ⁇ 3 are set so as to satisfy ⁇ 1 ⁇ 2 ⁇ 3 with an allowance to the extent that no malfunction occurs with respect to ⁇ 1.
  • ⁇ is the same as ⁇ 1 in equation (1).
  • the profile in which the threshold value changes according to the movement amount ⁇ D2 of the drive sheave 5 is applied, the monitoring accuracy is improved. Further, since the movement amount ⁇ D2 of the drive sheave 5 is used as a reference, it is hardly affected by the vibration of the car 1 or the main rope 3.
  • the threshold profile may be set higher than F1 and F2, and may be a constant value that does not depend on the movement amount ⁇ D2 of the drive sheave 5.
  • the threshold profile is set to three stages, but the number of stages is not limited to three.
  • FIG. 6 is a block diagram showing an elevator apparatus according to Embodiment 2 of the present invention.
  • the hoisting machine brake 7 is provided with a brake switch 45 as a brake detecting means (third detecting means) for detecting the operation / non-operation of the hoisting machine brake 7.
  • the brake switch 45 is a switch that determines the operation / non-operation of the hoisting machine brake 7 based on the movement of the movable part in the hoisting machine brake 7.
  • the brake switch 45 outputs an ON signal when the hoisting machine brake 7 is in an operating state (braking state), and outputs an OFF signal when the hoisting machine brake 7 is in an inoperative state (released state).
  • the output signals of the motor encoder 11 and the brake switch 45 are input to the state monitoring device 40.
  • the state monitoring device 40 monitors a decrease in the braking capacity of the hoisting machine brake 7 based on the output signals of the motor encoder 11 and the brake switch 45. That is, the state monitoring device 40 is a circuit that monitors a decrease in the braking capacity of the hoisting machine brake 7 by the speed increase of the drive sheave 5.
  • FIG. 7 is a block diagram showing a configuration of the state monitoring device 40 of FIG.
  • the output of the motor encoder 11 is converted into a speed signal V11 by a position converter 41 and a speed converter 42.
  • the determination unit 44 monitors the state of the elevator apparatus based on the speed signal V11 and the output signal S1 of the brake switch 45.
  • the determination unit 44 determines that an abnormal state has occurred in the elevator apparatus, the determination unit 44 outputs output signals L11, L12, and L13 for dealing with the abnormal state according to the level of the abnormal state.
  • the function of the determination unit 44 can be realized by, for example, a microcomputer or an analog logic circuit. Other configurations are the same as those in the first embodiment.
  • FIG. 8 is a flowchart showing the operation of the determination unit 44 of FIG.
  • the determination unit 44 starts monitoring if the output signal S1 of the brake switch 45 is ON (Step 11).
  • the determination unit 44 stores the speed signal V11 of the drive sheave 5 from the motor encoder 11 as the initial speed V0 (Step 12).
  • the speed increase amount ⁇ V11 is compared with the speed threshold value ⁇ 12. If the speed increase amount ⁇ V11 is larger than the threshold value ⁇ 12, it is determined that there is an abnormality and the output signal L12 is output (Step 14). Finally, the speed increase amount ⁇ V11 is compared with the speed threshold value ⁇ 11. If the speed increase amount is larger than ⁇ 11, it is determined that there is an abnormality and the output signal L11 is output (Step 15).
  • Step 16 the output signal S1 of the brake switch 45 is confirmed (Step 16). If it is ON, the process returns to Step 13 and the monitoring loop is repeated. If the output signal S1 is OFF, the monitoring is terminated and the process returns to Step 11.
  • the speed threshold value ⁇ 11 is set large enough not to cause a malfunction based on the maximum speed increase of the elevator system when the hoisting machine brake 7 operates normally in anticipation of the operating delay of the hoisting machine brake 7 and the judgment delay.
  • the speed thresholds ⁇ 12 and ⁇ 13 are set such that ⁇ 11 ⁇ 12 ⁇ 13, with further allowance for preventing malfunctions with respect to ⁇ 11.
  • the speed thresholds ⁇ 11, ⁇ 12, and ⁇ 13 which are determination criteria for the speed increase amount, satisfy ⁇ 13> ⁇ 12> ⁇ 11 in accordance with the level of decrease in the braking ability. Then, the determination unit 44 compares the acceleration of the drive sheave 5 with the speed threshold, determines that it is abnormal when the threshold is exceeded, and outputs output signals L11, L12, and L13 according to the excess level.
  • the output signal L11 is output to the operation control device 12 when it is determined that the follow-up observation level does not hinder the normal operation of the elevator apparatus.
  • the operation control device 12 records that the output signal L11 has been received, but does not issue a command to the hoisting machine 4 or the emergency stop device 9. Then, the maintenance staff checks the reception history of the output signal L11 in the operation control device 12 during the periodic inspection, and if there is a reception, carefully checks the hoisting machine brake 7.
  • the output signal L12 is output to the operation control device 12 when it is determined that the service stop level is likely to hinder normal operation.
  • the operation control device 12 controls the power conversion device 13 to stop the car 1 at the nearest floor.
  • the relay 14 is opened to cut off the power supply to the motor 6, cut off the generation of the motor torque, operate the hoisting machine brake 7 or the emergency stop device 9, and lower the passenger. Then, a request for maintenance personnel is made through a telephone line or the like, and the service of the elevator apparatus is stopped.
  • the output signal L13 is output to the emergency stop device 9 when it is determined that the emergency stop level requires immediate stop.
  • the emergency stop device 9 is a fail-safe brake device that grips the main rope 3 and brakes the car 1 when the power is cut off, and the power supply to the emergency stop device 9 is cut off by the output signal L3.
  • the speed increase amount of the drive sheave 5 after the hoisting machine brake 7 is operated is a monitoring item and compared with the speed threshold value, it is an elastic body. Compared with the case where the position and speed of the car 1 suspended by the main rope 3 are monitored, it is less susceptible to vibration. Further, not only when the car 1 is stopped, it is possible to monitor the car 1 while it is running.
  • the speed threshold is set to three stages, but the number of stages is not limited to three.
  • the signal S1 is a brake switch output signal of the hoisting machine brake 7, but the operation of the hoisting machine brake 7 such as current fluctuation and voltage fluctuation when the hoisting machine brake 7 is operated.
  • Other signals may be used as long as non-operation can be discriminated. For example, when monitoring current fluctuations, the brake coil current is cut off during braking, so the brake current gradually decreases. Increase. Therefore, the brake operation can be confirmed by capturing the current change. The same applies when monitoring voltage fluctuations.
  • FIG. 9 is a block diagram showing an elevator apparatus according to Embodiment 3 of the present invention.
  • an upper position display plate (upper marker) 56 is installed in the upper part of the hoistway.
  • the upper position display plate 56 is normally fixed at the landing position on the top floor.
  • a lower position display plate (lower marker) 57 is installed in the lower part of the hoistway.
  • the lower position display plate 57 is normally fixed at the landing position on the lowest floor.
  • the car 1 is equipped with a position sensor 55.
  • the position sensor 55 detects that the car 1 is located at the landing position on the uppermost floor or the lowermost floor by detecting the position display plates 56 and 57.
  • the inspection section detection means includes a position sensor 55, an upper position display plate 56, and a lower position display plate 57, and detects that the car 1 has moved in an inspection section set in advance in the hoistway.
  • the position sensor 55 and the position display plates 56 and 57 are also installed in a general elevator apparatus for detecting the landing position (door zone) of each floor, and need not be newly installed.
  • the output signal of the position sensor 55 is input to the operation control device 12.
  • the operation control device 12 confirms the car call and the load state in the car 1 at regular intervals. When there is no car call and it is confirmed that the car 1 is unmanned, the operation control device 12 moves the car 1 to a position where the position sensor 55 recognizes the lower position display plate 57, and outputs an inspection mode signal C1. In addition, the operation mode is switched from the normal mode to the inspection mode.
  • the operation control device 12 In the inspection mode, the operation control device 12 once moves the car 1 to a position where the position sensor 55 recognizes the upper position display plate 56, and again, the car 1 reaches a position where the position sensor 55 recognizes the lower position display plate 57. Move. As described above, when the traveling of the preset inspection section is completed, the operation control device 12 stops the car 1 and stops the inspection mode signal C1. That is, the inspection mode signal C1 is normally OFF, and is ON while the car 1 reciprocates from the lower position display plate 57 to the upper position display plate 56 in the inspection mode.
  • the inspection mode signal C1 from the operation control device 12 is input to the state monitoring device 50.
  • the state monitoring device 30 monitors traction reduction based on the inspection mode signal C1 and the output signal of the motor encoder 11. Other configurations are the same as those in the first embodiment.
  • FIG. 10 is a block diagram showing a configuration of the state monitoring device 50 of FIG.
  • the state monitoring device 50 monitors the output signal of the motor encoder 11 while receiving the inspection mode signal C1.
  • the output of the motor encoder 11 is converted into a position signal D1 by the position converter 51, and the position deviation until the car 1 moves from the lower position display plate 57 and returns to the lower position display plate 57 is integrated.
  • the determination unit 54 compares the position signal D11 on the lower position display plate 57 immediately after the start of the inspection mode with the position signal D12 on the lower position display plate 57 immediately after the end of the inspection mode, and the difference exceeds a predetermined threshold value. If it is, it is determined as abnormal. Further, the determination unit 54 outputs signals L21, L22, and L23 for coping with the abnormal state according to the level of the abnormality.
  • the function of the determination unit 54 can be realized by a microcomputer or an analog logic circuit, for example.
  • FIG. 11 is a flowchart showing the operation of the determination unit 54 of FIG. If the inspection mode signal C1 from the operation control device 12 is ON, the determination unit 54 stores the position signal D11 in that state (STEP 21 and STEP 22). Next, when the reciprocating operation of the car 1 in the inspection mode is completed and the inspection mode signal C1 from the operation control device 12 is turned off, the position signal D12 in that state is stored (STEP 23 and STEP 24).
  • the position difference ⁇ D1 is compared with the threshold value TH2, and if the position difference ⁇ D1 is larger than the threshold value TH2, it is determined that there is an abnormality and the output signal L22 is output (STEP 26). Finally, the position difference ⁇ D1 is compared with the threshold value TH1, and if the position difference ⁇ D1 is larger than the threshold value TH1, it is determined that there is an abnormality and the output signal L21 is output (STEP 27).
  • the determination unit 54 does not output a signal to the operation control device 12, returns to STEP 21, and the elevator device enters normal operation.
  • the threshold value TH1 is a position that takes into account the creep that can normally occur in the hoisting machine rotation speed when the car 1 returns to the travel start position by reciprocating a predetermined ascending / descending stroke from a travel start position with no load. On the basis of the maximum value of the error, it is set large enough to prevent malfunction.
  • the threshold value TH2 and the threshold value TH3 are set so that TH1 ⁇ TH2 ⁇ TH3 with further allowance for preventing malfunctions from TH1.
  • the threshold values TH1, TH2, and TH3 satisfy TH3> TH2> TH1 in accordance with the traction reduction level.
  • the determination part 54 compares the deviation
  • the output signal L21 is output to the operation control device 12 when it is determined that the follow-up observation level does not hinder the normal operation of the elevator apparatus.
  • the operation control device 12 records that the output signal L21 has been received, but does not issue a command to the hoist 4 or the emergency stop device 9. Then, the maintenance staff confirms the reception history of the output signal L21 in the operation control device 12 at the periodic inspection, and if there is reception, the main rope 3 and the drive sheave 5 are inspected carefully.
  • the output signal L22 is output to the operation control device 12 when it is determined that the service stop level is likely to hinder normal operation.
  • the operation control device 12 receives the output signal L21, the operation control device 12 requests maintenance personnel to be dispatched through a telephone line or the like, and stops the service of the elevator device.
  • the output signal L23 is output to the emergency stop device 9 when it is determined that the emergency stop level requires immediate stop.
  • the emergency stop device 9 is a fail-safe brake device that grips the main rope 3 and brakes the car 1 when the power is cut off. The power supply to the emergency stop device 9 is cut off by the output signal L23.
  • the operation control device 12 periodically checks the car load and the car call in order to enter the inspection mode. If the inspection mode is not entered even after repeating the periodic check a predetermined number of times, the operation control device 12 is stopped. Then, after the passenger is taken down, the passenger is not picked up, forcibly enters the inspection mode regardless of the car call, and outputs the inspection mode signal C1.
  • the abnormality determination is performed based on the shift amount of the drive sheave position at the fixed position when the car 1 reciprocates in the inspection section in the hoistway. 3 is not required (the governor encoder 23 in the first embodiment).
  • the inspection is performed after confirming the unattended and uncalled state, the elevator service is not deteriorated.
  • the inspection mode is forcibly entered when the inspection is not performed for a certain period of time, the inspection can be executed more reliably.
  • the threshold value is set to three stages, but the number of stages is not limited to three.
  • the upper position display plate 56 is arranged on the uppermost floor and the lower position display plate 57 is arranged on the lowermost floor.
  • the traveling section for inspection is not limited to this. However, it is desirable to set the distance above that required for the car 1 to move up and down the first floor. Thereby, the thresholds TH1, TH2, and TH3 can be treated as constant values regardless of the up / down stroke.
  • the starting point of the inspection section is the detection position of the lower position display plate 57, but the detection position of the upper position display plate 56 may be the starting point.
  • the car 1 is reciprocated at the time of the inspection, but only the ascending operation of the predetermined inspection section or the descending operation of the predetermined inspection section may be performed.
  • the inspection section detection means is not limited to the configuration of the third embodiment, and for example, a combination of a plurality of switches installed in the hoistway and an operation piece mounted on the car 1 for operating the switches. May be good.
  • the emergency stop device 9 of the type that grips the main rope 3 is shown.
  • the emergency stop device 9 may be any device that brakes the car 1 without relying on the hoisting machine 4. It may be of the type.
  • the motor encoder 11 that generates a signal according to the rotation of the drive sheave 5 via the motor 6 is shown as the drive sheave side detection means. A roller encoder or the like that is in direct contact with the sheave 5 may be used.
  • Embodiments 1 to 3 may be combined as appropriate.
  • the overall layout and roping method of the elevator apparatus are not limited to those in the first to third embodiments, and the hoisting machine 4, the operation control apparatus 12 (control panel), the state monitoring apparatuses 30, 40, 50, etc.
  • the installation location is not particularly limited.
  • the present invention can be applied to a type in which the car 1 is moved up and down using a plurality of hoisting machines 4 and an elevator apparatus in which a single hoisting machine 4 is provided with a plurality of hoisting machine brakes 7.

Landscapes

  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)
PCT/JP2009/062527 2008-09-01 2009-07-09 エレベータ装置 WO2010024048A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN200980133213.9A CN102131725B (zh) 2008-09-01 2009-07-09 电梯装置
DE112009002129T DE112009002129T5 (de) 2008-09-01 2009-07-09 Aufzuganlage
JP2010526619A JP5371991B2 (ja) 2008-09-01 2009-07-09 エレベータ装置

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JP2008-222976 2008-09-01
JP2008222976 2008-09-01

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WO2010024048A1 true WO2010024048A1 (ja) 2010-03-04

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JP2014502241A (ja) * 2010-12-03 2014-01-30 インベンテイオ・アクテイエンゲゼルシヤフト エレベータを動作させる方法
JP2014240322A (ja) * 2013-06-12 2014-12-25 株式会社日立製作所 エレベーターの閉じ込め防止装置及びエレベーターの閉じ込め防止方法
JP2016069093A (ja) * 2014-09-26 2016-05-09 株式会社日立製作所 エレベータ装置およびエレベータ装置の電子安全システムの点検方法
CN106892312A (zh) * 2017-05-03 2017-06-27 重庆顺心科技发展有限公司 采用磁性滚轮测速的电梯平衡系数检测仪
WO2020217352A1 (ja) * 2019-04-24 2020-10-29 三菱電機ビルテクノサービス株式会社 エレベーターの滑り検出システム

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TWI529117B (zh) * 2012-04-26 2016-04-11 鄭坤豐 電梯安全故障即時檢出系統及其方法
JP2014234261A (ja) * 2013-06-03 2014-12-15 株式会社日立製作所 エレベーターの荷重検出方法及び荷重検出装置
EP2865629B1 (en) 2013-10-24 2016-11-30 Kone Corporation Stall condition detection
JP6271948B2 (ja) * 2013-10-30 2018-01-31 株式会社日立製作所 プーリ溝診断装置付きエレベータ
JP6398879B2 (ja) * 2015-06-09 2018-10-03 三菱電機ビルテクノサービス株式会社 昇降機の作業状況監視装置および作業状況監視方法
CN107555276A (zh) * 2017-10-19 2018-01-09 余志林 一种电梯制动性能检测方法及装置
CN108439119B (zh) * 2018-03-16 2019-08-13 淮南矿业(集团)有限责任公司 一种双桥矿用提升机的控制方法及装置
CN110451378A (zh) * 2018-05-07 2019-11-15 广州广日电梯工业有限公司 电梯曳引能力检测方法及曳引能力检测装置
EP4008664A1 (en) * 2020-12-04 2022-06-08 Otis Elevator Company Method of preventing gravity jump at emergency stop in elevator systems
CN115285819A (zh) * 2022-08-16 2022-11-04 巨立电梯股份有限公司 一种电梯安全装置的保护系统及电梯

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JP2014502241A (ja) * 2010-12-03 2014-01-30 インベンテイオ・アクテイエンゲゼルシヤフト エレベータを動作させる方法
JP2014240322A (ja) * 2013-06-12 2014-12-25 株式会社日立製作所 エレベーターの閉じ込め防止装置及びエレベーターの閉じ込め防止方法
JP2016069093A (ja) * 2014-09-26 2016-05-09 株式会社日立製作所 エレベータ装置およびエレベータ装置の電子安全システムの点検方法
CN106892312A (zh) * 2017-05-03 2017-06-27 重庆顺心科技发展有限公司 采用磁性滚轮测速的电梯平衡系数检测仪
WO2020217352A1 (ja) * 2019-04-24 2020-10-29 三菱電機ビルテクノサービス株式会社 エレベーターの滑り検出システム
JPWO2020217352A1 (ja) * 2019-04-24 2021-10-14 三菱電機ビルテクノサービス株式会社 エレベーターの滑り検出システム
JP7047972B2 (ja) 2019-04-24 2022-04-05 三菱電機ビルテクノサービス株式会社 エレベーターの滑り検出システム

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CN102131725A (zh) 2011-07-20
JP2013224213A (ja) 2013-10-31
CN103466402A (zh) 2013-12-25
DE112009005523A5 (de) 2014-11-27
JP5675898B2 (ja) 2015-02-25
DE112009002129T5 (de) 2011-06-22
JP5371991B2 (ja) 2013-12-18
JPWO2010024048A1 (ja) 2012-01-26
CN102131725B (zh) 2013-10-23
CN103466402B (zh) 2015-10-07

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