JP2003321171A - Earthquake control and operation recovery system of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable precise and proper judgment, judge restart of safe operation while precisely grasping a vibrating condition of a building at the time of earthquake, and make the early restart of the operation safe and sure. <P>SOLUTION: Earthquake sensors 12 are installed in a plurality of floors in a building 2, and are connected with a computer 13, which judges stop and restart of the operation based on sensor information such as acceleration from the earthquake sensors 12 and inter-layer displacement of the building calculated on the basis of the sensor information, so as to output signals to an elevator drive device. When one or more of a plurality of the earthquake sensors 12 reach to a certain vibration level at the time of earthquake, an elevator 1 is automatically stopped, and then the operation is recovered. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator seismic control and operation restoration system which can ensure safety for earthquake disaster prevention in a building elevator facility and can restore operation.

[0002]

2. Description of the Related Art A seismic control system in an elevator installation stops its operation based on the detection of a P wave of a seismic motion by a seismic sensor (seismic sensor) dedicated to the elevator control system, and operates at an S wave magnitude. It decides to restart.

By the way, seismic sensors are often installed only in a part of a building such as a rooftop floor such as an elevator cab, and structurally mainly based on acceleration measurement. If the detected vibration exceeds the high set value, the elevator is stopped, the maintenance personnel inspect the elevator equipment for damage, and then the elevator is reset until the seismic detector is manually reset. It is configured to hold the stopped state.

[0004]

The current seismic control of elevators is conservatively stopped based on the values of P-waves and S-waves based on the measurement of seismic sensors installed only in a part of the building. At the same time, it is decided to restart operation very conservatively based on the maximum value of S wave.

For this reason, the number of stoppages due to control increases and the frequency of exceeding the set value increases. In addition, when the control was stopped, a specialized engineer had to go to the site to judge whether to restart the operation, so it often took time to restart. Therefore, we would like to reduce elevator stoppages due to seismic control as much as possible by a rational method.
Also, after the seismic control equipment has been activated and the elevator has stopped,
I want to resume driving as soon as possible. For that purpose, it is necessary to judge whether the elevator is normal or abnormal as soon as possible and accurately, and a means for restarting the operation more safely, reliably and automatically is required.

On the other hand, in Japanese Unexamined Patent Publication No. 10-67475, when the damage determining means determines that there is no abnormality, the automatic low speed operation means performs the automatic low speed operation of the elevator, and the data measured during the low speed operation is used. It has been proposed to analyze and confirm again that there is no abnormality by the abnormality determining means, and then restore the elevator by the automatic restoring means.

Further, in Japanese Unexamined Patent Publication No. 6-24657, acoustic data from equipment inside the elevator shaft collected by a microphone and position data of a car detected by a rotary encoder are recorded at the time of inspection and operation after the earthquake of the elevator. The abnormal sound is detected from the data recording unit and the acoustic data, and the sound in the elevator shaft during inspection operation is analyzed according to the level to judge the abnormality, so that the elevator not in operation after the earthquake occurs On the other hand, there has been proposed an elevator inspection device that automatically performs inspection work while detecting an abnormality in the equipment in the elevator shaft according to a command from the monitoring center.

[0008] In these cases, maintenance personnel can be dispatched only when necessary and appropriate measures can be taken, and even if a wide area disaster occurs, the elevator can be restored quickly and efficiently. With regard to the seismic control of elevators, which is a prerequisite, in many cases, the decision to stop / restart the operation was made based only on the shaking information at the building top position (elevator operating floor). More frequent stoppages and more often than the set value is exceeded,
This has been a cause of hindering accurate and urgent decision to restart the vehicle.

The object of the present invention is to eliminate the inconveniences of the prior art examples and to make accurate and appropriate judgments. In particular, in order to safely resume operation, the shaking condition of the building during an earthquake should be accurately grasped. The purpose of the present invention is to provide an elevator seismic control and operation recovery system that can make a safe and reliable operation restart by making a decision based on the above.

[0010]

In order to achieve the above object, the present invention firstly installs seismic sensors on a plurality of floors in a building, and uses the seismic sensors to obtain sensor information based on acceleration from the seismic sensors and the like. One or more seismic sensors among multiple seismic sensors at the time of an earthquake by connecting to a computer that makes a signal to the elevator drive device by determining whether to stop / restart the operation based on the displacement of the building calculated based on the sensor information The sensor automatically stops the elevator when it reaches a certain vibration level,
The main idea is to restore operation after that.

Secondly, a gist is to provide a laser measuring device capable of measuring the deformation state of the elevator guide rail, and automatically stop the elevator at the time of an earthquake based on the measurement result of the laser measuring device.

Third, after the automatic stop, the computer analyzes the situation of the building vibration stored in the computer from the seismic sensor, and if it is judged that the vibration of the building caused by the earthquake does not cause an abnormality in the elevator, the operation is started. Restarting,
Alternatively, a laser measuring device that can measure the deformation of the elevator guide rails can be installed and operation can be restarted based on the measurement results of this laser measuring device, or if it is determined that the operation can be restarted after the earthquake, The gist of the present invention is to circulate the cage around the inside of the elevator shaft at a low speed, measure the current value of the motor of the elevator drive device during this period, and restart the operation only when this value is below a certain value.

According to the first aspect of the present invention, a plurality of sensors arranged in the building detect an earthquake, and a sensor on a certain floor (single or plural) may have a certain vibration level (for example, acceleration). The elevator automatically stops when it reaches 100 Gal and the displacement between layers is 2 mm). Since the judgment is based on the shaking of multiple floors of the building, it is possible to make an accurate and appropriate judgment. In particular, in order to safely restart operation, it is important to make a judgment after accurately understanding the shaking condition of the building at the time of the earthquake, and it is possible to make a comprehensive judgment based on the acceleration and inter-story displacement information of multiple floors of the building. Therefore, reliability is increased.

According to the second aspect of the present invention, in addition to the above-mentioned action, the laser measuring system is used in combination to immediately detect the deformation state of the elevator guide rail, which is the most important for safe operation of the elevator. Therefore, it is possible to accurately and promptly determine whether to restart the operation.

According to the third aspect of the present invention, by combining with the seismic control system, the seismic control device dedicated to the elevator becomes unnecessary, and more effective (measurement by a sensor, judgment by a computer, comprehensive judgment as a system). ) Implementation is possible.

According to the fourth aspect of the present invention, as in the second aspect, the laser measuring system is used together to immediately detect the deformation state of the elevator guide rail, which is the most important for safe driving of the elevator. Therefore, it is possible to accurately and promptly determine whether to restart the operation.

According to the present invention of claim 5, after the earthquake,
Even when it is determined that the system can be restarted by the system of the present invention, it is possible to automatically check the elevator for abnormality by performing a low-speed test operation, and early restarting can be made safe and reliable. .

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is an explanatory diagram showing an embodiment of an elevator seismic control and operation restoration system of the present invention, in which 1 is an elevator provided in a building 2.

The elevator 1 is provided with a hoisting machine 3 in a machine room 4 above an elevator shaft 8 as in a normal elevator, and one end of a main rope 5 hung on a sheave of the hoisting machine 3 is provided. An elevator car 7 that moves up and down along the guide rail 6 is connected, and a counterweight 9 that moves up and down along the guide rail 6 is connected to the other end of the main rope 5 as shown in FIG.

The lifting motor 10 connected to the hoisting machine 3 is provided with an encoder 11 as shown in FIG. 8, and the encoder 11 measures the rotation speed and the amount of power generation. The rotation speed can also be used to confirm the position of the elevator car 7.

The building 2 is a multi-story building, and seismic sensors 12 are installed on a plurality of floors in the building 2,
Is connected to the computer 13. The seismic sensor 12 is, for example, an acceleration detecting unit that detects acceleration in three axial directions. For example, three acceleration sensors that detect only one axial direction are used.

The computer 13 uses the seismic sensor 12
It is a signal to the elevator drive device (drive control device of the lifting motor 10) to determine whether to stop or restart the operation based on the sensor information based on the acceleration from the vehicle and the interlayer displacement of the building 2 calculated based on the sensor information. When one of the plurality of seismic sensors 12 (one or more) reaches a vibration level during an earthquake, the elevator 1 is automatically stopped and then the operation is restored. In this case, acceleration and the like mean acceleration, velocity, and displacement, and interlayer displacement and the like refer to floor response spectrum, spectrum intensity, predominant period, and the like.

More specifically, the computer 13 calculates the propagation direction of the seismic wave and the synthetic acceleration from the acceleration data of the acceleration detecting means by the calculating means, and correlates the interlayer displacement of the building 2 stored in advance based on the past earthquake or the like. It is also possible to determine whether the operation of the elevator 1 is stopped or restarted by taking out the data from the storage means and associating the calculation result of the calculation means with the correlation data of the storage means.

As an example of the laser measuring system, as shown in FIG. 2, a laser oscillator 15 and a laser measuring device 16 are provided at both ends of the guide rail 6, and a laser passage hole 14 is provided.
The laser passage plate 14 provided with a
It was installed along. The outline of the laser passage plate 14 is shown in FIG. If the predicted laser diameter at the measurement position is the shaded portion φe in FIG. 4, the diameter of the laser passage hole 14a is φe plus a margin α.

In order to install the laser passage plate 14 at an appropriate position, as shown in FIGS. 5 and 6, a movable positioning plate 17 is provided on the laser passage plate 14 so as to close the laser passage hole 14a. The positioning plate 17 is provided with markings 18 for each position.

The alignment plate 17 is set so that the position of the laser can be seen from the laser irradiation surface or the back surface so that the core of the laser passage plate 14 coincides with the core of the laser light.

The laser oscillator 15 is, for example, a laser light emitting body with a condensing function using a collimator lens. When this is placed on the same side as the laser measuring instrument 16, the laser oscillator 15 is sandwiched by the guide rail 6 and the laser oscillator 15. The laser light reflecting plate 16 'is placed on the opposite side.
(19 in FIG. 7 is a prism)

As shown in FIG. 2, the laser measuring device 16 for measuring the deformation state of the guide rail 6 during and after the earthquake comprises a light receiving plate 16a, a CCD camera 16b and an image processing means 16c. When the distance between the laser oscillator 15 and the laser oscillator 15 is about 100 m, the laser emitted from the laser oscillator 15 has a laser diameter of about φ15 mm, and the light receiving plate 16a has a laser diameter of about φ21 mm.

In the example of FIG. 2, the laser light is guided by the guide rail 6
Is emitted from the lowermost part of the guide rail, passes through the laser passage hole 14a of the laser passage plate 14 installed on each floor, and is measured by the laser measuring device 16 at the top of the guide rail 6 or as shown in FIG. It is reflected by 16 'and measured by the laser measuring device 16 at the bottom.
When the guide rail 6 is deformed beyond a certain value, the laser light is blocked by the laser passage plate 14 on the way, and it can be detected that the rail exceeds a certain deformation state.

The light receiving plate 16a of the laser measuring device 16 receives 100% of the area when the laser diameter is normal, but at the time of abnormal operation, one of the laser passage plates 14 moves by ± α / 2 or more, so Area is reduced. The image processing means 16c detects such deformation of the area and detects the deformation state of the guide rail 6.

FIG. 9 shows a control block of the present invention. In addition to the sensor information from the seismic sensor 12, the computer 13 receives an output from the image processing means 16c as a measurement result of the laser measurement system, determines whether to stop or restart the operation based on this, and outputs a signal to the elevator drive device. It is also possible to make a comprehensive judgment by combining the sensor measurement results and the laser measurement results.

10 and 11 show the flow of the present invention. After the occurrence of an earthquake, a plurality of seismic sensors 12 arranged in the building sense the earthquake, and a specific floor (single or plural) The sensor has a certain vibration level (for example, 10
When it reaches 0 Gal and the layer displacement is 2 mm), the elevator 1 is automatically stopped by the output of the computer 13.

Further, based on the measurement of the laser measuring system, the elevator 1 can be automatically stopped by the output of the computer 13 depending on whether or not the guide rail 6 is deformed even after the earthquake ends.

Furthermore, after the earthquake where the system automatically stopped,
The computer analyzes the situation of the building's shaking stored in the computer from the sensor, and the range where the building's shaking due to the earthquake does not cause abnormalities in the elevator (for example, 20
If it is judged to be 0 Ga1 and the displacement between layers is 5 mm), the operation is restarted.

In addition to this, after the earthquake in which the system automatically stopped, the deformation state of the guide rail 6 was measured by the laser measurement system in the same manner as described above, and was taken into the computer. Based on the measurement result, the operation of the elevator 1 was restarted. to decide. In this way, the restart of the operation is comprehensively judged by combining the sensor measurement results and the laser measurement results.

Further, as shown in the latter half of FIG. 11, when the operation can be restarted after the earthquake in which the system automatically stopped, the current position of the elevator cage 7 is confirmed before the restart, and the elevator cage 7 is moved at a low speed. The elevator shaft 8 is cycled through the
The current value is measured and the operation is restarted only when this value is less than a certain value as shown in FIG. (A in FIG. 12 is a reference value, and when it exceeds this, it is stopped.)

If there is a defective portion, the defective portion can be identified based on the number of rotations of the motor.

[0038]

As described above, the seismic control and operation restoration system for an elevator according to the present invention makes an accurate and appropriate judgment because the judgment is based on the shaking of multiple floors of a building. In particular, in order to safely restart operation, it is important to make a judgment after accurately understanding the shaking condition of the building at the time of the earthquake, and it is possible to make a comprehensive judgment based on the acceleration and inter-story displacement information of multiple floors of the building. Therefore, reliability is increased.

Further, by using the laser measuring system together, the deformation state of the elevator guide rail, which is the most important for safe driving of the elevator, can be detected, so that the decision to restart the driving can be made accurately and promptly. it can.

In addition to this, even when it is determined by the present system that the operation can be restarted, the elevator can be automatically checked for abnormality by performing the low-speed test operation, and the operation can be restarted safely and reliably. Can be

Further, by combining with the seismic control system, the seismic control device dedicated to the elevator becomes unnecessary, and more effective (measurement by the sensor, judgment by the computer, comprehensive judgment as the system) can be performed.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing one embodiment of an elevator seismic control and operation restoration system of the present invention.

FIG. 2 is an explanatory diagram of a main part of a laser measurement system showing an embodiment of the elevator seismic control and operation restoration system of the present invention.

FIG. 3 is a plan view of a light receiving plate of a laser measuring instrument.

FIG. 4 is a plan view of a laser passage plate.

FIG. 5 is a plan view of an alignment plate.

FIG. 6 is a side view of an alignment plate.

FIG. 7 is an explanatory diagram of a laser measurement system showing an embodiment of an elevator seismic control and operation restoration system of the present invention.

FIG. 8 is an explanatory diagram of restarting operation.

FIG. 9 is a control block diagram showing an embodiment of the elevator seismic control and operation restoration system of the present invention.

FIG. 10 is a flow chart of essential parts showing one embodiment of an earthquake control and operation recovery system for an elevator according to the present invention.

FIG. 11 is an overall flow diagram showing an embodiment of an elevator seismic control and operation restoration system of the present invention.

FIG. 12 is a graph showing measurement results of current values and rotation speeds of a lifting motor of an elevator driving device.

[Explanation of symbols]

1 ... Elevator 2 ... Building 3 ... Hoisting machine 4 ... Machine room 5 ... Main rope 6 ... Guide rail 7 ... Elevator cage 8 ... Elevator shaft 9 ... Counterweight 10 ... Lifting motor 11 ... Encoder 12 ... Earthquake sensor 13 ... Computer 14 ... Laser passing plate 14a ... Laser passing hole 15 ... Laser oscillator 16 ... Laser measuring instrument 16 '... Laser light reflecting plate 16a ... Light receiving plate 16b ... CCD camera 16c ... Image processing means 17 ... Positioning plate 18 ... Marking 19 ... prism

Claims (5)

[Claims] 1. A seismic sensor is installed on a plurality of floors in a building,
The seismic sensor is connected to a computer that outputs a signal to the elevator drive device by determining whether to stop or restart the operation based on the interlayer information of the building calculated based on the sensor information or the sensor information such as the acceleration from the seismic sensor. An elevator seismic control and operation recovery system characterized by automatically stopping an elevator when one or more of a plurality of seismic sensors reaches a vibration level during an earthquake and then restoring operation. 2. The seismic control and operation restoration of the elevator according to claim 1, wherein a laser measuring device capable of measuring the deformation state of the elevator guide rail is provided, and the elevator is automatically stopped at the time of an earthquake based on the measurement result of the laser measuring device. system. 3. After the automatic stop, the computer analyzes the situation of the building shake stored in the computer from the earthquake sensor, and restarts the operation if it is determined that the shaking of the building caused by the earthquake does not cause an abnormality in the elevator. An elevator seismic control and operation restoration system according to claim 1 or 2. 4. The elevator according to claim 1, further comprising a laser measuring device capable of measuring the deformation state of the elevator guide rail, and restarting the operation based on the measurement result of the laser measuring device. Earthquake control and operation recovery system. 5. After the earthquake, when it is determined that the operation can be restarted, the elevator cage is slowly circulated inside the elevator shaft, and the current value of the motor of the elevator drive device is measured during this period, and this value is below a certain value. The elevator seismic control and operation restoration system according to any one of claims 1 to 4, which restarts the operation only in the case of.