WO2011101978A1 - エレベーター装置 - Google Patents

エレベーター装置 Download PDF

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Publication number
WO2011101978A1
WO2011101978A1 PCT/JP2010/052519 JP2010052519W WO2011101978A1 WO 2011101978 A1 WO2011101978 A1 WO 2011101978A1 JP 2010052519 W JP2010052519 W JP 2010052519W WO 2011101978 A1 WO2011101978 A1 WO 2011101978A1
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WO
WIPO (PCT)
Prior art keywords
braking
car
brake
elevator
operation mode
Prior art date
Application number
PCT/JP2010/052519
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
秀明 小寺
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
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to CN201080064130.1A priority Critical patent/CN102762481B/zh
Priority to PCT/JP2010/052519 priority patent/WO2011101978A1/ja
Priority to KR1020127019324A priority patent/KR101386279B1/ko
Priority to EP10846115.3A priority patent/EP2537790B1/en
Priority to JP2012500430A priority patent/JP5459387B2/ja
Publication of WO2011101978A1 publication Critical patent/WO2011101978A1/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
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006—Monitoring devices or performance analysers
    • B66B5/0037—Performance analysers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
    • B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
    • B66B1/32—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on braking devices, e.g. acting on electrically controlled brakes

Definitions

  • This invention relates to an elevator apparatus.
  • FIG. 6 As a conventional general traction type elevator apparatus, for example, one shown in FIG. 6 is known.
  • 1 is a car that can be raised and lowered in a hoistway (not shown) of an elevator
  • 2 is a hoistway that is placed in a hoistway so that it can be raised and lowered
  • 3 is a counterweight that moves in the opposite direction to this car 1.
  • the driving device 4 is composed of a hoisting machine for driving the raising and lowering of the car 1 and the counterweight 2.
  • One end of the driving device 4 is connected to the upper part of the car 1, and the middle is a sheave of the driving device 3.
  • This is a main rope that suspends the car 1 and the counterweight 2 in a hoistway in a hoistway by the other end being connected to the upper part of the counterweight 2 after being wound around 5 and the sled wheel 6.
  • the main rope 4 moves in conjunction with the rotation of the sheave 5 by the frictional force generated between the sheave 5 and the movement of the main rope 4 causes the car 1 and the counterweight 2 to move in the hoistway. Go up and down.
  • the sheave 5 provided in the drive device 3 is driven by a drive motor (not shown) also provided in the drive device 3, and its rotation is braked by the brake device 7. Further, the drive device 3 is provided with an encoder 8 that detects the rotational speed of the sheave 5 and outputs it as pulse data.
  • the braking capacity of the braking device increases, the deceleration of the car during an emergency stop or the like becomes tight, which may affect the users in the car due to inertial force or the like.
  • G gravitational acceleration
  • this criterion may not be satisfied. Due to the above circumstances, the braking capability of the braking system is set to an appropriate value, and the braking capability is checked during periodic maintenance inspections and inspections. It is necessary to check whether it is not.
  • the main rope for suspending the car and the counterweight is to check the braking apparatus by calculating the braking capacity of the braking apparatus using the deceleration when the car is stopped.
  • a storage unit for storing, a calculation unit for calculating a deceleration when the car is stopped, a calculation unit for calculating a braking force of the brake using the deceleration of the car, and the like, and a calculation by the calculation unit
  • a determination circuit that compares a calculation result with a predetermined reference value to determine whether or not the braking force of the brake is good (see, for example, Patent Document 1).
  • This invention was made in order to solve such a subject, and the 1st objective is to obtain the elevator apparatus which can measure the braking capability of a braking device, with a cage
  • the second object is to obtain an elevator apparatus that can detect a sign that the braking ability is abnormal and can prevent a dangerous operation caused by the abnormality of the braking ability.
  • a car and a counterweight that are disposed so as to be movable up and down in an elevator hoistway, a drive apparatus that drives the car and the counterweight to be raised and lowered, and a sheave of the drive apparatus.
  • the control device performs switching control of the operation mode of the elevator to a braking capability confirmation operation mode, and the elevator
  • the operation mode of the motor is the braking capacity check operation mode
  • the car is stopped by the braking device in a state where there is a weight imbalance between the car side and the counterweight side, and the brake coil is connected to the brake coil.
  • the braking device is gradually released by controlling the suction current, detects the start of movement of the car via the encoder, and based on the value of the suction current at the start of the movement of the car, the braking device The braking ability is measured, and when the braking ability deviates from a predetermined standard, it is determined that the braking ability of the braking device is abnormal.
  • a car and a counterweight that are arranged to be raised and lowered in a hoistway of the elevator, a driving device that drives the raising and lowering of the car and the counterweight, and a sheave of the driving device are wound around the car and the
  • an elevator apparatus comprising: a main rope that suspends a counterweight in the hoistway; a braking device that brakes the sheave of the driving device; and a control device that controls the driving device and the braking device.
  • the control device performs switching control to the braking capacity confirmation operation mode for the operation mode of the elevator, and measures the braking capacity of the braking device when the operation mode of the elevator is the braking capacity confirmation operation mode, When the amount of fluctuation of the measured braking ability from the braking ability at the previous measurement deviates from the predetermined fluctuation amount reference, the braking ability of the braking device It is configured to determine that an abnormality.
  • the present invention relates to an elevator apparatus, wherein the car and the counterweight are disposed so as to be movable up and down in the elevator hoistway, the driving apparatus for driving the elevator and the counterweight is lifted, and the sheave of the driving apparatus.
  • An elevator device comprising: an encoder for detecting the number of revolutions of the sheave; and a brake provided in the braking device and having a brake coil that sucks a brake shoe and releases the braking when energized by an electric current.
  • the control device controls the operation mode of the elevator to be switched to a braking capability confirmation operation mode, and the elevator
  • the driving mode is the braking capacity check operation mode
  • the car is stopped by the braking device in a state where there is a weight imbalance between the car side and the counterweight side, and suction to the brake coil is performed.
  • the brake is gradually released by controlling the current to detect the start of movement of the car via the encoder, and based on the value of the suction current at the start of movement of the car, By measuring the braking capacity and determining that the braking capacity of the braking device is abnormal when the braking capacity deviates from a predetermined standard, the braking capacity of the braking system can be measured while the car is stopped. There is an effect that it can be performed.
  • a car and a counterweight that are arranged to be raised and lowered in a hoistway of the elevator, a driving device that drives the raising and lowering of the car and the counterweight, and a sheave of the driving device are wound around the car and the
  • an elevator apparatus comprising: a main rope that suspends a counterweight in the hoistway; a braking device that brakes the sheave of the driving device; and a control device that controls the driving device and the braking device.
  • the control device performs switching control to the braking capacity confirmation operation mode for the operation mode of the elevator, and measures the braking capacity of the braking device when the operation mode of the elevator is the braking capacity confirmation operation mode, When the amount of fluctuation of the measured braking ability from the braking ability at the previous measurement deviates from the predetermined fluctuation amount reference, the braking ability of the braking device It is possible to detect a sign that the braking ability is abnormal, and to prevent a dangerous operation caused by the abnormality of the braking ability. .
  • FIG. FIGS. 1 to 3 relate to Embodiment 1 of the present invention
  • FIG. 1 is a diagram showing the overall configuration of the elevator apparatus
  • FIG. 2 is a flowchart showing the flow of operation of the elevator apparatus
  • FIG. It is a figure explaining the point of the braking capability abnormality determination using the conversion brake torque of.
  • reference numeral 1 denotes a car that can be raised and lowered in a hoistway (not shown) of an elevator, and a counterweight 2 that moves in a direction opposite to the car 1 is also raised and lowered in the hoistway.
  • a driving device 3 composed of a hoisting machine for driving the raising and lowering of the car 1 and the counterweight 2 is installed.
  • One end of the main rope 4 is connected to the upper portion of the car 1, and the middle of the main rope 4 is wound around the sheave 5 and the baffle 6 of the driving device 3, and then the other of the main rope 4. Since the end is connected to the upper part of the counterweight 2, the car 1 and the counterweight 2 are suspended in a hoistway in a hoistway.
  • the weight of the counterweight 2 is set to be balanced with, for example, the weight of the car 1 when 50% of the rated load is loaded in the car 1.
  • the main rope 4 moves in conjunction with the rotation of the sheave 5 by the frictional force generated between the sheave 5 and the movement of the main rope 4 causes the car 1 and the counterweight 2 to move in the hoistway. Go up and down.
  • the sheave 5 provided in the drive device 3 is driven by a drive motor (not shown) also provided in the drive device 3, and its rotation is braked by the brake device 7.
  • the braking device 7 that brakes the rotation of the sheave 5 includes a brake drum (not shown) that rotates in conjunction with the sheave 5 and a brake that is disposed to face the brake drum. Yes.
  • the brake is braked by a brake shoe that generates a braking force by a frictional force when it is pressed against the brake drum by the action of an elastic force by a spring and comes into contact with the brake drum.
  • a brake coil for releasing.
  • the drive device 3 is provided with an encoder 8 that detects the rotational speed of the sheave 5 and outputs it as pulse data.
  • the driving device 3 and the braking device 7 are controlled by a control device 9 installed in a machine room or a hoistway wall at the top of the hoistway.
  • the controller 9 receives car position data 9a, car load data 9b, and encoder pulse data 9c, and the controller 9 controls the driving device 3 and the braking device 7 based on these data.
  • the car position data 9a indicates the current position of the car 1 in the hoistway, and is output by a car position detection device (not shown) provided in the car 1.
  • the car position detection device detects the current position of the car 1 by detecting a door zone plate (not shown) attached in the hoistway, for example.
  • the in-car load data 9b indicates the load in the car 1, and is output by a car in-car detection device that is provided in the car 1 and includes, for example, a scale device (not shown).
  • the car load detecting device can also be configured by a camera that captures the situation inside the car.
  • the encoder pulse data 9c is output from the encoder 8 described above and indicates the rotational speed of the sheave 5.
  • the elevator has two operation modes, a normal operation mode and a braking capability confirmation operation mode.
  • the normal operation mode is a mode in which the elevator is normally operated in normal times without any special circumstances
  • the braking capability confirmation operation mode is a mode in which the braking capability of the braking device 7 is measured to check whether there is an abnormality in the braking capability. . Switching between these operation modes is performed under the control of the control device 9 when a predetermined operation mode transition condition is satisfied.
  • the predetermined operation mode transition condition for example, the transition to the braking ability confirmation operation mode is set so that the preset elevator user is performed in a time zone when there are few users.
  • the car position data 9a, the car load data 9b, and the encoder pulse data 9c are input to the data recording operation unit 9d provided in the control device 9.
  • the data recording calculation unit 9d uses the input car position data 9a, car load data 9b, and encoder pulse data 9c to perform a predetermined data recording process and a predetermined data calculation process corresponding to the operation mode of the elevator. Execute.
  • the drive control command unit 9e outputs a control command to the drive device 3 based on the calculation result from the data recording calculation unit 9d, and the drive device 3 operates according to the control command from the drive control command unit 9e.
  • the brake control command unit 9f outputs a control command to the braking device 7 based on the calculation result from the data recording calculation unit 9d, and the braking device 7 operates according to the control command from the brake control command unit 9f.
  • a limit switch (not shown) that restricts the car 1 from moving beyond a predetermined stop position on the top floor. Is installed.
  • the limit switch is activated when the car 1 moves further upward beyond the predetermined stop position on the top floor, and the safety device is activated when the limit switch is activated so that the car 1 is emergency-stopped. Has been.
  • the elevator device particularly the control device 9 operates according to a series of flows shown in FIG.
  • the control device 9 When the elevator is in the normal operation mode (step S0), when the predetermined operation mode transition condition described above, for example, a preset time zone when there are few users of the elevator, is satisfied, the control device 9 An attempt is made to shift the operation mode of the elevator to the braking capability confirmation operation mode (step S1).
  • step S2 the data recording calculation unit 9d of the control device 9 confirms the load in the car 1 based on the car load data 9b.
  • step S3 the data recording calculation unit 9d determines whether or not there is no passenger (user) in the car 1 based on the load in the car 1 confirmed in step S2.
  • the process returns to step S0, and the control device 9 changes the operation mode of the elevator. Continue in normal operation mode.
  • step S4 the control device 9 causes the control device 9 to shift the operation mode of the elevator to the braking capability confirmation operation mode, and performs the following operation.
  • the drive control command unit 9e of the control device 9 outputs a control command to the drive device 3 to drive the drive device 3 to travel the car 1 to the top floor, and the car 1 arrives at the top floor.
  • the brake control command unit 9f of the control device 9 outputs a control command to the braking device 7 to operate the braking device 7, and stops the car 1 on this top floor.
  • the weight of the counterweight 2 is set to be balanced with the weight of the car 1 when 50% of the rated load is loaded in the car 1. Therefore, when the inside of the car 1 is not loaded, the counterweight 2 side is heavier than the car 1 side, and the car 1 is raised by the weight difference between the car 1 side and the counterweight 2, so that the counterweight 2 is increased.
  • An unbalance torque TA is generated in the direction of lowering.
  • the state where the car 1 is stopped by the braking device 7 is a state where the braking holding torque by the braking device 7 exceeds the unbalance torque TA.
  • the brake control command unit 9f controls the suction current value supplied to the brake coil of the braking device 7 so as to gradually increase from 0 to gradually release the brake of the braking device 7 and perform braking.
  • the braking holding torque by the device 7 is gradually reduced.
  • the braking holding torque by the braking device 7 becomes equal to the unbalance torque TA and balances. From this state, when the suction current to the brake coil further increases and the braking holding torque falls below the unbalance torque TA, the sheave 5 of the drive device 3. Begins to rotate.
  • the data recording operation unit 9d of the control device 9 detects when the sheave 5 starts to rotate by monitoring the encoder pulse data 9c from the encoder 8, and at the time when the sheave 5 starts to rotate, The suction current value supplied to the brake coil is measured and recorded.
  • step S5 the data recording calculation unit 9d converts the value of the suction current to the brake coil measured and recorded in the previous step S4 into the brake braking capability of the braking device 7. Conversion from the value of the suction current to the brake coil to the brake braking ability of the braking device 7 is performed as follows.
  • the relationship between the attraction force acting on the brake shoe from the brake coil when a certain attraction current value is applied to the brake coil is measured in advance and stored in the data recording calculation unit 9d.
  • the coefficient of friction between the brake drum and the brake shoe and the rotation radius of the brake drum are also stored in advance in the data recording calculation unit 9d.
  • the attraction force of the brake coil at the attraction current value obtained in step S4 is obtained from the correspondence relationship between the attraction current value and the attraction force stored in advance, and the attraction force thus obtained is stored in the friction coefficient stored in advance.
  • the conversion brake torque T is calculated by multiplying the rotation radius.
  • This conversion brake torque T is the torque of the attractive force of the brake coil as can be seen from the calculation process.
  • the braking holding torque is the torque of the pressing force of the brake shoe against the brake drum. Since the suction force of the brake coil acts to weaken the pressing force of the brake shoe, the sheave 5 rotates by subtracting the converted brake torque T from the maximum braking holding torque when the suction current value is zero. This is the braking holding torque at the start. In other words, the braking holding torque at the time when the sheave 5 starts to rotate is substantially equal to the unbalance torque TA, so that the maximum braking when the suction current value is 0 is obtained by adding the converted brake torque T to the unbalance torque TA. Holding torque.
  • step S5 the process proceeds to step S6, where the data recording calculation unit 9d of the control device 9 presets the braking capability of the braking device 7 based on the converted brake torque T obtained from the suction current value in step S5. Judgment is made as to whether it is within the range of maintenance inspection standards.
  • a method for determining whether or not the braking capability of the braking device 7 is within the range of the preset maintenance inspection standard will be specifically described with reference to FIG.
  • the data recording operation unit 9d of the control device 9 includes an unbalance torque TA when the car 1 is in an unloaded state, a predetermined maintenance inspection reference lower limit torque TL larger than the unbalance torque TA, and the maintenance inspection reference.
  • Each value of a predetermined maintenance inspection reference upper limit torque TU larger than the lower limit torque TL is stored in advance.
  • the value of the suction current supplied to the brake coil is gradually increased from 0 and the braking holding torque at the time when the sheave 5 starts to rotate is substantially equal to the unbalance torque TA.
  • 9d evaluates the maximum braking holding torque, which is the braking capability of the braking device 7, based on a value obtained by adding the converted braking torque T to the unbalance torque TA.
  • the data recording calculation unit 9d Is determined to be normal within a predetermined maintenance inspection standard. Further, the data recording calculation unit 9d determines that the value obtained by adding the converted brake torque T to the unbalance torque TA is smaller than the maintenance inspection reference lower limit torque TL, or the value obtained by adding the converted brake torque T to the unbalance torque TA is maintained. When it is larger than the inspection reference upper limit torque TU, it is determined that the braking capability of the braking device 7 is outside the predetermined maintenance inspection standard and is abnormal.
  • step S6 the data recording calculation unit 9d of the control device 9 determines that the braking capability of the braking device 7 is within the preset maintenance inspection standard based on the converted brake torque T obtained in step S5. Judge whether there is. In this determination, when the value obtained by adding the converted brake torque T to the unbalance torque TA is not less than the maintenance inspection reference lower limit torque TL and not more than the maintenance inspection reference upper limit torque TU, the braking capability of the braking device 7 is normal. It is determined that there is, and the process proceeds to step S7. In step S7, the control device 9 ends the braking capability confirmation operation mode. In the subsequent step S8, the control device 9 shifts the operation mode of the elevator to the normal operation mode, and then ends a series of operation flows.
  • step S6 determines that the value obtained by adding the converted brake torque T to the unbalance torque TA is smaller than the maintenance inspection reference lower limit torque TL or larger than the maintenance inspection reference upper limit torque TU.
  • step S9 the control device 9 determines that the braking capability of the braking device 7 is abnormal, stops the operation of the elevator, and in the subsequent step S10, the control device 9 performs braking using a not-shown alarm device. After reporting that the braking ability of the device 7 is abnormal to a predetermined location such as a maintenance company of the elevator, a series of operation flow is finished.
  • the elevator apparatus configured as described above is wound around a car and a counterweight, which are disposed so as to be movable up and down in the elevator hoistway, a driving apparatus for driving the elevator and the lifting of the car and the counterweight, and a sheave of the driving apparatus.
  • An elevator apparatus comprising a main rope for suspending a car and a counterweight in a hoistway, a braking device that brakes a sheave of a driving device, and a control device that controls the driving device and the braking device.
  • An encoder for detecting the number of rotations of the vehicle and a brake provided in the braking device and having a brake coil that sucks the brake shoe and releases the braking when energized by an electric current, and the control device operates the elevator When the mode is controlled to switch to the braking capacity check operation mode and the elevator operation mode is the braking capacity check operation mode, When there is a weight imbalance between the side and the counterweight side, the car is stopped by the braking device, and the braking current by the braking device is gradually released by controlling the suction current to the brake coil.
  • the braking capacity of the braking device is measured based on the value of the attraction current at the start of the movement of the car, and the braking capacity of the braking system is abnormal when the braking capacity deviates from a predetermined standard. It is judged that there is.
  • control device controls the unbalance torque resulting from the weight imbalance between the car side and the counterweight side, and the suction current to the brake coil to gradually release the braking by the braking device, but the car starts to move.
  • the braking ability of the braking device is evaluated based on the sum of the torque of the brake coil and the torque of the brake coil at the time of the attraction current. For this reason, it is possible to measure the braking ability of the braking device while the car is stopped.
  • the car further includes a car load detection device that detects a load in the car, and the control device measures the braking ability of the brake device when the car is in an unloaded state based on the detection result of the car load detection device. It further includes a limit switch that restricts the car from moving further upward beyond a predetermined stop position on the top floor where the car stops, and the weight of the counterweight is in an unloaded state in the car. It is set to be heavier than the weight of the car at a certain time, and the control device measures the braking ability of the braking device in a state where the car is stopped at the stop position on the top floor. For this reason, even if the car moves during the measurement of the braking capacity, the car can move upward and the limit switch can be operated to immediately stop the movement of the car.
  • FIG. FIG. 4 relates to Embodiment 2 of the present invention and is a flowchart showing the flow of operation of the elevator apparatus.
  • whether or not the braking capability is normal is determined based on whether or not the braking capability of the braking device is within a preset maintenance inspection standard based on the converted brake torque obtained from the attraction current value.
  • the braking capacity (converted braking torque) of the braking device measured and calculated in the previous braking capacity confirmation operation mode is stored and accumulated.
  • the braking ability is normal depending on whether or not the difference (variation) in braking capacity between the current time and the previous time is within the range of the maintenance inspection fluctuation standard set in advance. It is determined whether or not there is.
  • the elevator apparatus in particular, the control apparatus 9 operates according to a series of flows shown in FIG.
  • the control device 9 An attempt is made to shift the operation mode of the elevator to the braking capability confirmation operation mode (step S21).
  • step S22 the data recording calculation unit 9d of the control device 9 confirms the load in the car 1 based on the car load data 9b.
  • step S23 the data recording calculation unit 9d determines whether or not there is no passenger (user) in the car 1 based on the load in the car 1 confirmed in step S22.
  • the process returns to step S20, and the control device 9 changes the operation mode of the elevator. Continue in normal operation mode.
  • step S24 the control device 9 causes the control device 9 to shift the operation mode of the elevator to the braking capability confirmation operation mode, and performs the following operation.
  • the drive control command unit 9e of the control device 9 outputs a control command to the drive device 3 to drive the drive device 3 to travel the car 1 to the top floor, and the car 1 arrives at the top floor.
  • the brake control command unit 9f of the control device 9 outputs a control command to the braking device 7 to operate the braking device 7, and stops the car 1 on this top floor.
  • the brake control command unit 9f controls the suction current value supplied to the brake coil of the braking device 7 so as to gradually increase from 0 to gradually release the brake of the braking device 7 and perform braking.
  • the braking holding torque by the device 7 is gradually reduced.
  • the sheave 5 of the driving device 3 starts to rotate.
  • the data recording operation unit 9d of the control device 9 detects when the sheave 5 starts to rotate by monitoring the encoder pulse data 9c from the encoder 8, and at the time when the sheave 5 starts to rotate, The suction current value supplied to the brake coil is measured and recorded.
  • step S25 the data recording calculation unit 9d converts the value of the suction current to the brake coil measured and recorded in the previous step S24 into the brake braking capability of the braking device 7. Specifically, the attraction force of the brake coil at the attraction current value obtained at step S24 is obtained from the correspondence relationship between the attraction current value and the attraction force stored in advance, and the attraction force thus obtained is stored in advance. The converted brake torque T is calculated by multiplying the friction coefficient and the rotation radius.
  • step S25 the process proceeds to step S26, where the data recording calculation unit 9d performs measurement in the converted braking torque T obtained this time in step S25 and the previous braking capacity check operation mode recorded in the data recording calculation unit 9d. Calculate the difference from the calculated converted brake torque T. In addition, the data recording calculation unit 9d records the value of the converted brake torque T calculated this time in step S25.
  • step S27 the data recording calculation unit 9d determines that the variation amount of the braking ability of the braking device 7 is based on the predetermined maintenance inspection variation amount reference based on the difference of the converted brake torque T obtained in step S26. A determination is made as to whether it is within range. That is, a value of a predetermined maintenance inspection fluctuation amount reference torque TD that is equal to or greater than 0 is stored in advance in the data recording calculation unit 9d of the control device 9, and the data recording calculation unit 9d calculates the difference of the converted brake torque T.
  • the data recording calculation unit 9d When the absolute value is equal to or less than the maintenance inspection fluctuation amount reference torque TD, it is determined that the braking capability of the braking device 7 is within a predetermined maintenance inspection fluctuation amount reference range and is normal. Further, when the absolute value of the difference of the converted brake torque T is larger than the maintenance inspection fluctuation amount reference torque TD, the data recording calculation unit 9d has a braking capacity of the braking device 7 that is outside the predetermined maintenance inspection fluctuation amount reference range. It is judged that it fluctuated abnormally.
  • step S27 the data recording calculation unit 9d determines that the fluctuation amount of the braking capacity of the braking device 7 is based on the maintenance inspection fluctuation amount criterion set in advance based on the difference of the converted brake torque T obtained in step S26. A determination is made as to whether it is within range. In this determination, if the absolute value of the difference of the converted brake torque T is equal to or less than the maintenance inspection fluctuation amount reference torque TD, it is determined that the braking capability of the braking device 7 is normal, and the process proceeds to step S28. In step S28, the control device 9 ends the braking capability confirmation operation mode, and in subsequent step S29, the control device 9 shifts the operation mode of the elevator to the normal operation mode, and then ends a series of operation flows.
  • step S30 the control device 9 determines that the braking capability of the braking device 7 is abnormal and stops the operation of the elevator.
  • step S31 the control device 9 performs braking using a not-shown alarm device. After reporting that the braking ability of the device 7 is abnormal to a predetermined location such as a maintenance company of the elevator, a series of operation flow is finished. Other configurations and operations are the same as those in the first embodiment.
  • the elevator apparatus configured as described above is wound around a car and a counterweight, which are disposed so as to be movable up and down in the elevator hoistway, a driving apparatus for driving the elevator and the lifting of the car and the counterweight, and a sheave of the driving apparatus.
  • An elevator apparatus having a main rope for suspending a car and a counterweight in a hoistway, a braking device for braking the sheave of the driving device, and a control device for controlling the driving device and the braking device.
  • the device controls the switching of the elevator operation mode to the braking ability confirmation operation mode, and measures the braking ability of the braking device when the elevator operation mode is the braking ability confirmation operation mode.
  • the control device further includes an encoder that detects the number of revolutions of the sheave, and a brake that is provided in the braking device and has a brake coil that sucks the brake shoe and releases the braking when energized by the current.
  • the brake is stopped by the braking device in a state where there is a weight imbalance between the car side and the counterweight side, the braking current by the braking device is gradually released by controlling the suction current to the brake coil, The start of movement of the car is detected, and the braking ability of the braking device is evaluated based on the value of the attraction current at the start of movement of the car. For this reason, it is possible to detect a sign that the braking performance of the braking device becomes abnormal while the car is stopped.
  • FIG. FIG. 5 relates to Embodiment 3 of the present invention and is a flowchart showing the flow of operation of the elevator apparatus.
  • the first embodiment (or the second embodiment) described above is a so-called single brake in which the brake device has one brake, but the third embodiment described here is independent of the brake device. This is a case where a so-called double brake having two brakes capable of braking operation is used.
  • the braking device 7 that brakes the rotation of the sheave 5 is provided with two brakes that are arranged so as to face the brake drum and that can be braked independently of each other. Is configured. Each of these brakes is provided with a brake coil, and each of the suction currents supplied to these brake coils is controlled independently through a control command output from the brake control command unit 9f of the control device 9. It is possible.
  • the elevator apparatus in particular, the control apparatus 9 operates according to a series of flows shown in FIG.
  • a case where a double brake is used in the first embodiment will be described.
  • the control device 9 An attempt is made to shift the operation mode of the elevator to the braking capability confirmation operation mode (step S41).
  • step S42 the data recording calculation unit 9d of the control device 9 confirms the load in the car 1 based on the car load data 9b.
  • step S43 the data recording calculation unit 9d determines whether or not there is no passenger (user) in the car 1 based on the load in the car 1 confirmed in step S42.
  • the process returns to step S40, and the control device 9 changes the operation mode of the elevator. Continue in normal operation mode.
  • step S44 the control device 9 causes the control device 9 to shift the operation mode of the elevator to the braking capability confirmation operation mode, and performs the following operation.
  • the drive control command unit 9e of the control device 9 outputs a control command to the drive device 3 to drive the drive device 3 to travel the car 1 to the top floor, and the car 1 arrives at the top floor.
  • the brake control command unit 9f of the control device 9 outputs a control command to the braking device 7 to operate the braking device 7, and stops the car 1 on this top floor.
  • the brake control command unit 9f energizes the brake coil of one of the two brakes provided in the braking device 7 to completely release the one brake.
  • the brake control command unit 9f controls the suction current value supplied to the brake coil of the other brake to gradually increase from 0, and gradually releases the other brake of the braking device 7. Then, the braking holding torque by the other brake of the braking device 7 is gradually reduced.
  • the sheave 5 of the driving device 3 falls below the unbalance torque TA, the sheave 5 of the driving device 3 starts to rotate.
  • the data recording operation unit 9d of the control device 9 detects when the sheave 5 starts to rotate by monitoring the encoder pulse data 9c from the encoder 8, and at the time when the sheave 5 starts to rotate, The suction current value supplied to the brake coil is measured and recorded.
  • step S45 the data recording calculation unit 9d converts the value of the suction current to the brake coil measured and recorded in the previous step S44 into the brake braking capability of the braking device 7. Specifically, the attraction force of the brake coil at the attraction current value obtained at step S44 is obtained from the correspondence relationship between the attraction current value and the attraction force stored in advance, and the attraction force thus obtained is stored in advance. The converted brake torque T is calculated by multiplying the friction coefficient and the rotation radius.
  • step S45 the process proceeds to step S46, where the data recording calculation unit 9d determines whether the braking capability of the braking device 7 is based on the maintenance inspection standard set in advance based on the converted brake torque T obtained from the suction current value in step S45. A determination is made as to whether it is within range.
  • the determination method as to whether or not the braking capability of the braking device 7 is within a preset maintenance inspection standard range is the same as in step S6 of FIG. 2 according to the first embodiment, and the data recording calculation unit 9d.
  • the braking capacity of the braking device 7 is equal to a predetermined maintenance inspection reference. If the value obtained by adding the converted brake torque T to the unbalance torque TA is smaller than the maintenance inspection reference lower limit torque TL, or the converted brake torque T is set to the unbalance torque TA. If the added value is larger than the maintenance inspection standard upper limit torque TU, it is determined that the braking capability of the braking device 7 is out of the predetermined maintenance inspection standard and is abnormal. .
  • step S46 If the value obtained by adding the converted brake torque T to the unbalance torque TA is not less than the maintenance inspection reference lower limit torque TL and not more than the maintenance inspection reference upper limit torque TU in the determination in step S46, the brake device 7 (the other brake It is determined that the braking ability is normal, and the process proceeds to step S47.
  • step S47 the control device 9 ends the braking capability confirmation operation mode, and in subsequent step S48, the control device 9 shifts the operation mode of the elevator to the normal operation mode, and then ends a series of operation flows.
  • step S46 determines that the value obtained by adding the converted brake torque T to the unbalance torque TA is smaller than the maintenance inspection reference lower limit torque TL or larger than the maintenance inspection reference upper limit torque TU.
  • step S49 the control device 9 determines that the braking ability of the braking device 7 (of the other brake) is abnormal and stops the operation of the elevator, and in the subsequent step S50, the control device 9 is not shown. After reporting that the braking capability of the braking device 7 (of the other brake) is abnormal to a predetermined location such as a maintenance company of the elevator using the reporting device, the series of operation flow is terminated.
  • step S44 the brake coil of the brake of which the braking ability is confirmed first (the “other” in the above description) of the two brakes provided in the braking device 7 is energized to a fully opened state.
  • the brake current is controlled so that the value of the suction current supplied to the brake coil of the brake of the one that has not yet been checked ("one" in the explanation above) is gradually increased.
  • the brake holding torque may be gradually decreased by gradually releasing.
  • the braking device has two brakes that can perform braking operation independently of each other, and the control device has one brake. Is opened, the suction current to the brake coil of the other brake is controlled to gradually release the braking by the braking device, the start of the car movement is detected via the encoder, and the suction current at the start of the car movement is detected.
  • the braking capability of the braking device is evaluated based on the value of. For this reason, in the braking device having a so-called double brake configuration, it is possible to check the braking capability of each brake.
  • the present invention relates to a car and a counterweight which are disposed in a hoistway of an elevator so as to freely move up and down, a driving device which drives the raising and lowering of the car and the counterweight, and a cage which is wound around the sheave of the driving device. And a main rope for suspending the counterweight in the hoistway, a braking device for braking the sheave of the driving device, and a control device for controlling the driving device and the braking device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Elevator Control (AREA)
PCT/JP2010/052519 2010-02-19 2010-02-19 エレベーター装置 WO2011101978A1 (ja)

Priority Applications (5)

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CN201080064130.1A CN102762481B (zh) 2010-02-19 2010-02-19 电梯装置
PCT/JP2010/052519 WO2011101978A1 (ja) 2010-02-19 2010-02-19 エレベーター装置
KR1020127019324A KR101386279B1 (ko) 2010-02-19 2010-02-19 엘리베이터 장치
EP10846115.3A EP2537790B1 (en) 2010-02-19 2010-02-19 Elevator device
JP2012500430A JP5459387B2 (ja) 2010-02-19 2010-02-19 エレベーター装置

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JP (1) JP5459387B2 (ko)
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WO2017033238A1 (ja) * 2015-08-21 2017-03-02 三菱電機株式会社 エレベータ装置
WO2018235183A1 (ja) * 2017-06-21 2018-12-27 三菱電機株式会社 エレベータ制御装置及びエレベータ制御方法
WO2020110200A1 (ja) * 2018-11-27 2020-06-04 三菱電機株式会社 油圧ブレーキ及びエレベーター
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JP2016183048A (ja) * 2015-03-26 2016-10-20 三菱電機株式会社 エレベータ制御装置、エレベータ監視システム、及びエレベータ制御方法
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WO2020110200A1 (ja) * 2018-11-27 2020-06-04 三菱電機株式会社 油圧ブレーキ及びエレベーター

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CN102762481A (zh) 2012-10-31
EP2537790B1 (en) 2019-03-27
CN102762481B (zh) 2014-11-05
EP2537790A4 (en) 2015-12-02
JP5459387B2 (ja) 2014-04-02
KR101386279B1 (ko) 2014-04-17
KR20120108020A (ko) 2012-10-04
EP2537790A1 (en) 2012-12-26

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