JP2010070298A - Emergency operation device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To assume a situation in which the calculation means cannot correctly estimate the amplitude of the rope due to an abnormality of the vibration detector or the arithmetic unit itself or an abnormality in communication between the vibration detector and the arithmetic unit.
SOLUTION: A vibration detector, a calculation device that calculates a long object shake amount and outputs a determination result for controlling operation when the long object shake amount is larger than a predetermined threshold, acceleration and time The estimated rope amplitude is estimated on the basis of this, the amplitude rope amplitude is compared with the long object shake amount calculated by the calculation device, and if it is determined that the long object shake amount is an abnormal value, the control operation is performed. A verification device that outputs an operation stop signal to stop and a control device that controls the car based on the determination result and the operation stop signal are provided.
[Selection] Figure 1

Description

The present invention relates to an elevator control operation device in which an elevator car performs control operation when a building is shaken by long-period vibration due to an earthquake or strong wind.

Long-period vibrations tend to resonate the elevator main rope, governor rope, power to the passenger car, cable for signal communication, etc. (hereinafter “long object”). In this case, there are cases where long objects swing around in the hoistway and get caught by hoistway equipment such as a landing detection device installed near the inner wall of the hoistway. This will damage the elevator and basket equipment. As means for preventing such a phenomenon that a long object is caught in the equipment in the hoistway due to resonance of the long object, the amplitude of the rope that resonates with the long-period vibration of the building is estimated by a vibration detector and a calculating means, There is an invention for carrying out the control operation by the above (Japanese Patent Laid-Open No. 2007-331901).

JP2007-331901A

When the invention described in Patent Document 1 is used, it is assumed that the calculation means cannot correctly estimate the amplitude of the rope due to an abnormality of the vibration detector or the arithmetic device itself or an abnormality in communication between the vibration detector and the arithmetic device. .
If the estimated value of the rope amplitude is estimated to be excessively large, the convenience of the user may be impaired, for example, the elevator car stops despite being operable. On the other hand, if the estimated value of the rope amplitude is estimated to be too small, there is a possibility that the rope may continue to operate despite the possibility that the rope may contact or get caught in the equipment in the hoistway. The equipment may be damaged.

An elevator control operation device according to the present invention includes a vibration detector that is installed in a hoistway or at the top of a building and detects the acceleration of a building due to long-period vibration, and a main rope and a control device based on the acceleration detected by the vibration detector. When the long object shake amount, which is the amount that a long object such as a speed rope or power cable shakes, is calculated, and it is determined whether the long object shake amount is larger than a predetermined threshold. The estimated rope amplitude is estimated based on the calculation device that outputs the determination result of the controlled operation and the acceleration detected by the vibration detector and the time after the acceleration is detected, and is calculated by the estimated rope amplitude and the calculation device. Comparing with the amount of shake of the long object, if it is determined that the amount of shake of the long object does not correspond to a predetermined value, a verification device that outputs an operation stop signal for stopping the control operation and an arithmetic device A control device for controlling the car based on the operation stop signal by the constant results and verification device, in which is composed of.

A vibration detector that is installed in the hoistway or at the top of the building and detects building acceleration due to long-period vibration, and long objects such as main ropes, governor ropes, and power cables based on the acceleration detected by the vibration detectors A computing device that calculates the amount of shake of a long object, which is the amount of vibration, and outputs a determination result for controlling operation if the amount of shake of the long object is greater than a predetermined threshold. And the estimated rope amplitude based on the acceleration detected by the vibration detector and the time since the acceleration was detected, and the estimated rope amplitude is compared with the long object shake amount calculated by the calculation device. When it is determined that the scale swing amount does not correspond to a predetermined value, the verification device outputs an operation stop signal for stopping the control operation, the determination result by the arithmetic device, and the operation stop signal by the verification device. In the event that an abnormality occurs in the estimation of the rope amplitude by the control device that controls the cage, it is possible to ensure passenger safety by stopping the control operation and stopping the elevator at the nearest floor it can.

Embodiment 1 FIG.
FIG. 1 is a configuration diagram illustrating an elevator control operation device according to an embodiment of the present invention. The elevator control operation device of the present embodiment is configured such that the car 1 and the counterweight 2 are moved up and down along a guide rail (not shown). Further, the basket 1 and the counterweight 2 are suspended and driven by a main rope 5 via a hoisting machine 4 in a machine room 3 provided in the upper part of the building above the hoistway. In the machine room 3, a control device 6, a speed governor and vibration detector 7 (not shown), and an S wave detector 8 are arranged, and a speed governor rope (not shown) is wound around the speed governor. Further, as shown from the hoisting machine 4 side, a compen- sion rope (not shown) for compensating for the weight difference between the main rope 5 on the basket side 1 and the counterweight side 2 is installed. A tail cord (not shown) is also laid to supply power to the basket 1. Thus, long objects, such as the main rope 5, a governor rope, a compensation rope, and a tail cord, are provided in the hoistway. And in the hoistway, the guide rail, the equipment in the hoistway of the basket 1, etc. are installed.

An example of the vibration detector 7 that detects the shaking of the building will be described. For example, the vibration detector 7 has an acceleration detection function in the horizontal direction (x, y) direction orthogonal to each other. The vibration detector 7 detects acceleration and calculates an acceleration signal converted into a signal, and transmits the acceleration signal to the arithmetic device 9 and the verification device 10.

Although it is desirable to fix the vibration detector 7 in the machine room 3 that is not subjected to vibration such as the hoisting machine 4, it is not limited to this. Particularly in a machine roomless (hereinafter referred to as MRL) type elevator, the vibration detector 7 may be installed in the hoistway.

Further, it is not necessary to provide one vibration detector 7 in one building, and one vibration detector 7 may be provided in a plurality of buildings as long as the buildings are densely packed. This reduces costs. In some cases, a plurality of vibration detectors 7 are provided in one building. Thus, even if one vibration detector 7 breaks down, the vibration of the building can be detected by the other vibration detector 7.

The arithmetic device 9 calculates and estimates a long object shake amount, which is an amount that the long object in the hoistway is shaken, based on the acceleration signal obtained from the vibration detector 7. A comparison is made between the amount of shake of the long object and a predetermined threshold value to determine whether or not the control operation is to be performed, and the control result is transmitted to the control device 6. The arithmetic device 9 may be provided in the vibration detector 7 or stored in the control device 6.

It is not necessary to provide one arithmetic device 9 for one building, and one arithmetic device 9 may be provided for a plurality of buildings as long as the buildings are densely packed. In this case, a unique threshold value for each building is used. Is registered in advance. This reduces costs. In some cases, a plurality of arithmetic devices 9 are provided in one building. As a result, even if one arithmetic device 9 breaks down, the other arithmetic device 9 can calculate the amount of shake of the long object of the building.

Further, by artificially setting the threshold value in the arithmetic unit 9, the threshold value can be adjusted based on the allowable level of the structure or mechanism of the elevator. Control due to unnecessary acceleration in small earthquakes can be avoided.

The arithmetic device 9 performs the control operation determination by the following determination, for example. In the following, only an example of the control operation is given, and the control operation is not limited to this. When the calculated amount of long object shake is smaller than α, which is a predetermined threshold value, the basket 1 determines to maintain normal operation. When the amount of shake of the long object is larger than α and smaller than β, which is a predetermined threshold value, it is determined to open the door by moving the cage to a non-resonant floor that is less susceptible to resonance. This determination can prevent the long object from colliding with the hoistway device. When the long-body shake amount is larger than the predetermined threshold value β, it is determined to stop the operation on the spot. By this determination, it is possible to prevent the operation of the basket from being maintained despite the possibility that a long object may come into contact with or catch on the hoistway device. These determination results are converted into signals and sent to the control device 6 via signal lines.

The verification device 10 directly takes in the acceleration signal detected by the vibration detector 7 independently of the arithmetic device 9, and determines the minimum rope amplitude 11 (described later) and the maximum rope amplitude 12 (described later) from the acceleration and the duration from the start of acceleration. Calculate the estimated rope amplitude estimated later. Then, the estimated rope amplitude is compared with the long object estimated amplitude 13 estimated by the arithmetic device 9 to verify whether the estimation result of the arithmetic device 9 is abnormal. As a result, the operation stop signal is sent to the control device 6 assuming that the long object estimated amplitude 13 calculated when the long object estimated amplitude 13 is less than the minimum rope amplitude 11 or greater than the maximum rope amplitude 12 is abnormal. Then, the control device 6 instructs the hoist 4 to control the subsequent control operation and stop the elevator at the nearest floor.

Specifically, the minimum rope amplitude 11 is, for example, the minimum acceleration level at which the rope amplitude can grow in the building multiplied by the duration,
Y _min = C ₁ × a ₁ × t + C ₂ Formula 1
It is represented by a1 is the minimum acceleration level value, t is time, and C1 and C2 are constants determined from the vibration characteristics of the building, the rope attenuation factor, and the like.

On the other hand, the maximum rope amplitude 12 is obtained by multiplying the set minimum acceleration level of the normal S-wave detector for seismic control, which is positioned higher in the control operation for long-period earthquakes, by the duration,
Y _max = C ₁ × a ₂ × t + C ₂ Formula 2
It is represented by a2 is the acceleration level value of the S-wave detector. If this acceleration level value is exceeded, the higher-order S-wave seismic control operation should be operated, so this level is used as the upper limit of the rope amplitude estimation value.

The verification device 10 can detect an abnormality in the estimation of the long object estimated amplitude 13 by the arithmetic device 9 and prevent continuation of a control operation or a dangerous operation.

In addition, it is not necessary to provide one verification device 10 for one building, and one verification device 10 may be provided for a plurality of buildings in an area where buildings are densely packed. Calculate the estimated rope amplitude. This reduces costs. In some cases, a plurality of verification devices 10 are provided in one building. As a result, even if one verification device 10 fails, it can be verified by the other verification device 10 whether there is an abnormality in the estimation result of the arithmetic device 9.

The control device 6 controls the movement of the car 1 based on signals sent from the arithmetic device 9 and the verification device 10. When an instruction signal for carrying out control operation is received from the arithmetic unit 9, control is performed so that the car 1 is controlled based on the signal, and when an operation stop signal for detecting abnormality is received from the verification device 10. Stops the control operation and stops the basket 1 at the nearest floor.

  Next, the operation of the elevator control operation device according to the embodiment of the present invention will be described. The vibration detector 7 senses building acceleration. At that time, the vibration detector 7 is set so that the vibration of the hoisting machine 4 is not mistakenly detected as the vibration of the building.

Next, a long object estimated amplitude 13 which is a long object shake amount is calculated by the arithmetic unit 9 based on the acceleration detected by the vibration detector 7, and the amount of the long object estimated amplitude 13 is set in advance. The control operation is performed by comparing with α and β (α <β), which are the threshold values, and determining whether or not α and β are exceeded.

In the control operation, when the long object shake exceeds the threshold value α but is equal to or less than the threshold value β, the operation of moving the car 1 to the non-resonant floor is performed, and the operation of opening the door and lowering the passenger is performed. This is a control operation for lowering passengers in order to prevent long objects from coming into contact with hoistway equipment and to prevent passengers from becoming dangerous due to future shaking of the building.

Further, when the long object shake exceeds the threshold value β, the car 1 performs an emergency stop on the spot. Thereby, it is possible to prevent the operation of the basket 1 from being maintained even though there is a possibility that a long object may come into contact with or catch on the hoistway device, and a danger to the passenger can be avoided. In some cases, the control operation is canceled and the traveling control operation is restarted by attenuation to α or less.

Next, the car 1 is controlled via the hoisting machine 4 based on the determination result sent from the arithmetic device 9 by the control device 6.

Next, the acceleration information from the vibration detector 7 and the long object estimated amplitude 13 from the arithmetic device 9 are input to the verification device 10. When the verification apparatus 10 determines that the long object estimated amplitude 13 is less than the minimum rope amplitude 11 obtained by the above formulas 1 and 2 based on the acceleration information or exceeds the maximum rope amplitude 12, An operation stop signal is sent to the control device 6 on the assumption that there is an abnormality in the calculation of the scale estimated amplitude 13.

Next, when the operation stop signal is sent from the verification device 10, the control device 6 stops the subsequent control operation and stops the car 1 at the nearest floor.

1 is a control operation device for an elevator according to Embodiment 1 of the present invention. The relationship between the time according to Embodiment 1 of the present invention and the amplitude of the rope is shown.

Explanation of symbols

Basket 1, counterweight 2, machine room 3, hoisting machine 4, main rope 5, control device 6, vibration detector 7, S wave detector 8, arithmetic device 9, verification device 10, minimum rope amplitude 11, maximum rope Amplitude 12, long object estimated amplitude 13

Claims (2)

A vibration detector that is installed in the hoistway or at the top of the building and detects the acceleration of the building due to long-period vibration;
Based on the acceleration detected by the vibration detector, a long object shake amount, which is an amount by which a long object such as a main rope, a governor rope, and a power cable can shake, is calculated, and the long object shake amount is calculated in advance. An arithmetic unit that outputs a determination result for carrying out the control operation when greater than a predetermined threshold; and
Estimating the estimated rope amplitude based on the acceleration detected by the vibration detector and the time since the acceleration was detected, comparing the estimated rope amplitude and the amount of long-body shake calculated by the arithmetic device, A verification device that outputs an operation stop signal for stopping the control operation when it is determined that the amount of shake of the long object does not correspond to a predetermined value;
A control device for controlling the car based on the determination result by the arithmetic device and the operation stop signal by the verification device;
A control operation apparatus for an elevator, comprising:   2. The elevator control operation device according to claim 1, wherein the control unit stops the car at the nearest floor based on the operation stop signal output by the verification device.

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