JP2009196770A - Control device and control method of elevator and renovation method of existing elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a control device of an elevator capable of appropriately controlling the elevator even when both a long-period earthquake sensor and a rope breakage detection device are actuated. <P>SOLUTION: The elevator control device is equipped with the long-period earthquake sensor 8 which is installed at an installation building of the elevator and detects oscillation of a building generated by the long-period earthquake, the rope breakage detection device 10 for detecting the strand breakage of the rope in an elevator hoistway, and a control board 6 for controlling an operation of the elevator based on respective results of the long-period earthquake sensor 8 and the rope breakage detection device 10. When both the long-period earthquake sensor 8 and the rope breakage detection device 10 are operated simultaneously, the control board 6 performs a retraction operation for stopping the car 2 at a predetermined position which hardly receives the influence of the long-period earthquake, and after that puts the elevator out of restart. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an elevator control device that detects an abnormality and appropriately controls an elevator, and a control method thereof, and to an existing elevator repair method that modifies an existing elevator so that the elevator is appropriately controlled when the abnormality is detected. It is.

  In the Tokachi-oki earthquake that occurred in 2003 and the Chuetsu earthquake in Niigata Prefecture that occurred in 2004, an event was observed in which the elevator rope shook significantly at a location 200 km or more away from the epicenter. This is because the natural period of a high-rise building, etc. was close to the period of ground motion with a small acceleration and a relatively long period (hereinafter referred to as “long-period ground motion”). Resonated with the shaking of the building.

  As a prior art for such a problem, for example, a long-period earthquake detector capable of detecting the above-mentioned long-period earthquake motion is installed in an elevator machine room or the like, and when the long-period earthquake detector operates, the elevator is shifted to control operation. The thing comprised so that it may be made is proposed (refer patent document 1). In the thing of patent document 1, when a long-period seismic detector operates, first, a car is stopped on the nearest floor, a passenger is taken down to the landing, and then the predetermined position where an elevator is not easily influenced by long-period ground motion. That is, the car is moved to a position where the rope does not resonate (non-resonant floor).

Some elevators are provided with a rope breakage detecting device in order to detect a rope abnormality, for example, a strand breakage of a main rope (see, for example, Patent Document 2). In the thing of patent document 2, the breakage detection means is arrange | positioned in proximity to the main rope wound around the driving sheave of the hoisting machine, and the breakage detection means is pushed in a predetermined direction or from the breakage detection means. The occurrence of strand breakage is detected by blocking the detection light. And if generation | occurrence | production of strand breakage is detected by this rope breakage detection apparatus, after stopping a car on the predetermined floor, the elevator is made into the state which cannot be restarted.
If it is a thing of patent documents 2, not only when strand breakage occurs, but also when the main rope has come off from the ropeway of the drive sheave, i.e., when the main rope rides up, It can be detected as a rope abnormality.

  Such a rope breakage detection device is not only installed on the main rope, but also installed on other ropes in the elevator hoistway such as a governor rope and a compen- sion rope. There is. In such a case, when the strand breakage such as the governor rope and the compen- sion rope is detected by the rope breakage detecting device, the elevator is stopped after stopping the car on the predetermined floor in the same manner as described in Patent Document 2. Was unable to restart.

JP 2007-320719 A JP-A-8-301543

If a relatively large earthquake occurs in a remote area and a high-rise building continues to sway slowly due to the long-period ground motion caused by the earthquake, the elevator rope (for example, main rope, governor rope, compen- sion rope, etc.) Shake occurs. When the rope breakage detecting device described in Patent Document 2 is provided in an elevator, there is a risk that a rope abnormality may be detected due to the rope swinging despite the fact that the strand breakage or the rope climbing has not occurred. is there.
Further, when the elevator is provided with the long-period earthquake detector described in Patent Document 1, the long-period earthquake detector operates due to the shaking of the building caused by the long-period ground motion.

  Conventionally, no consideration has been given to such a situation, that is, specific control in the case where both the long-period earthquake detector and the rope breakage detection device are operated. For this reason, if both a long-period earthquake detector and a rope breakage detector operate due to a relatively large earthquake at a remote location, the car cannot be moved to the non-resonant floor, There was a risk that damage caused by periodic ground motion would spread.

  The present invention has been made to solve the above-described problems, and its purpose is to appropriately control an elevator even when both a long-period seismic detector and a rope breakage detecting device are operated. Control device and control method for elevator, and existing elevator for renovating existing elevator so that elevator can be appropriately controlled when both long-period seismic detector and rope breakage detection device operate Is to provide a repair method.

  An elevator control device according to the present invention is provided in a building where an elevator is installed, and a long-period earthquake detector that detects a shaking of a building caused by long-period earthquake motion, and a rope that detects strand breakage of a rope in an elevator hoistway And a control panel for controlling the operation of the elevator based on the detection results of the long-period seismic detector and the rope breakage detecting device. The control panel includes the long-period seismic detector and the rope breakage detecting device. When both of them operate at the same time, after the evacuation operation is performed to stop the car at a predetermined position that is not easily affected by the long-period ground motion, the elevator is disabled.

  An elevator control method according to the present invention is provided in a building where an elevator is installed, a long-period seismic detector for detecting shaking of a building caused by long-period ground motion, and a rope for detecting strand breakage of a rope in an elevator hoistway An elevator control method comprising: a break detecting device; a step of determining whether or not the long-period earthquake detector is operating; a step of determining whether or not the rope break detector is operating; and a long-period earthquake detector When both the rope breakage detection device and the rope breakage detection device operate simultaneously, a step of performing a retreat operation for stopping the car at a predetermined position that is not easily affected by long-period ground motion, and a state in which the elevator cannot be restarted after performing the retreat operation And a step of.

  A method for refurbishing an existing elevator according to the present invention is provided in a building where an elevator is installed, and detects a strand breakage of a rope in a long-period seismic detector that detects a shaking of a building caused by a long-period ground motion and an elevator hoistway. A long-period seismic detector and a rope rupture detection in an existing elevator equipped with a rope break detection device and a control panel for controlling the operation of the elevator based on the detection results of the long-period seismic detector and the rope rupture detection device A new function has been added to the control panel that makes it impossible to restart the elevator after performing a evacuation operation that stops the car at a predetermined position that is not easily affected by long-period ground motion when both devices operate simultaneously. To do.

  The method of repairing an existing elevator according to the present invention includes a rope breakage detection device that detects strand breakage of a rope in an elevator hoistway, a control panel that controls the operation of the elevator based on the detection result of the rope breakage detection device, In the existing elevator equipped with a long-period seismic detector that detects the shaking of the building caused by long-period ground motion in the building where the elevator is installed, both the long-period seismic detector and the rope breakage detector operated simultaneously. In such a case, a function is newly added to the control panel to make the elevator unrestartable after performing a retreat operation for stopping the car at a predetermined position that is not easily affected by long-period ground motion.

  According to the present invention, the elevator can be appropriately controlled even when both the long-period earthquake detector and the rope breakage detecting device are operated.

  In order to explain the present invention in more detail, it will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
FIG. 1 is a configuration diagram of an entire elevator including a control device according to Embodiment 1 of the present invention, and FIG. 2 is a configuration diagram illustrating an elevator control device according to Embodiment 1 of the present invention.
1 and 2, 1 is an elevator hoistway, 2 is a car that moves up and down in the hoistway 1, 3 is a counterweight that moves up and down in the hoistway 1 in the opposite direction to the car 2, and 4 is a car 2 A main rope for suspending the counterweight 3 in a fishing bottle type, 5 is a hoisting machine having a driving sheave around which a part of the main rope 4 is wound, 6 is an elevator operation control such as control of the hoisting machine 5 A control panel 7 is connected between the control panel 6 and the car 2, and a part of the control panel 7 is suspended in the hoistway 1.

  Reference numeral 8 denotes a long-period earthquake detector provided near the top of the elevator installation building, for example, in the elevator machine room 9 or the like. This long-period seismic detector 8 is provided for detecting a slow shaking of a building that occurs when a relatively large earthquake occurs in a remote location, and cannot be detected by a normal seismometer. It is configured to detect a building shake caused by long-period ground motion, that is, a shake having a small acceleration and a relatively long period.

  Reference numeral 10 denotes a rope breakage detecting device provided for detecting an abnormality of the rope in the elevator hoistway, for example, a strand breakage of the main rope 4. The rope breakage detection device 10 has the same configuration as that described in Patent Document 2, for example. In such a case, the rope breakage detection device 10 causes not only the occurrence of strand breakage but also the case where the main rope 4 is removed from the ropeway of the driving sheave of the hoisting machine 5, that is, the main rope 4 is climbed up. In this case, it can be detected as a rope abnormality. Further, the rope breakage detection device 10 is installed in the machine room 9 so as to be close to the main rope 4 from the driving sheave of the hoist 5 to the deflector 11, for example.

  The rope breakage detection device 10 only needs to have the above function, and its specific configuration and installation location are not limited to those described above. Moreover, the rope breakage detection apparatus 10 can be applied not only to the main rope 4 but also to other ropes used in elevators. For example, it is possible to detect abnormalities (for example, strand breakage) of these ropes by installing them close to the governor rope 4a or the compensator rope 4b of the elevator. In the present embodiment, only the case where the rope breakage detection device 10 is applied to the main rope 4 will be described as an example.

  Further, this elevator is provided with passenger detection means for detecting the presence or absence of passengers in the car 2. The passenger detection means includes, for example, a car scale device 12 that detects the load of the car 2, a car camera 13 that captures an image of the car 2, a car operation panel 14 that is operated by a passenger in the car 2, and the like. .

  Next, a specific configuration of the control panel 6 will be described. The control panel 6 includes, for example, a passenger presence / absence determination unit 15, a car travel determination unit 16, a control method determination unit 17, and an operation control unit 18.

The passenger presence / absence determination unit 15 has a function of determining the presence / absence of a passenger in the car 2 based on the detection result of the passenger detection means. For example, the passenger presence / absence determination unit 15 determines whether the load of the car 2 detected by the car scale device 12 is equal to or greater than a predetermined value or based on the analysis result of the image taken by the car camera 13. The presence of passengers is determined. Further, also when the destination call is registered by the destination button of the car operation panel 14, it is determined that there is a passenger in the car 2. In addition, the said passenger detection means shows an example, You may detect the presence or absence of the passenger in the cage | basket | car 2 by another means.
The car travel determination unit 16 has a function of determining whether the car 2 is currently traveling, that is, whether the car 2 is currently traveling or stopped.

The control method determination unit 17 determines an elevator control method based on the determination results of the passenger presence determination unit 15 and the car traveling determination unit 16 and the detection results of the long-period earthquake detector 8 and the rope breakage detection device 10. Has a function to determine. Then, the operation control unit 18 appropriately controls the operation of the elevator based on the determination result of the control method determination unit 17.
Below, based on FIG. 3 thru | or FIG. 5, operation | movement of the said control method determination part 17 and the operation control part 18 is demonstrated concretely. 3 to 5 are flowcharts showing the operation of the elevator control apparatus according to Embodiment 1 of the present invention.

  The control method determination unit 17 determines an optimal control method based on the traveling state of the car 2, the presence / absence of passengers in the car 2, and the presence / absence of each operation of the long-period earthquake detector 8 and the rope breakage detection device 10. Specifically, the control method determination unit 17 first determines from the determination result of the car traveling determination unit 16 whether the car 2 is currently traveling or stopped (S101). Here, when the car 2 is traveling, the presence / absence of passengers in the car 2 is determined from the determination result of the passenger presence / absence determination unit 15 (S102).

<< Operation when the car 2 is traveling without passengers >>
When it is determined that there is no passenger in the car 2 in S102, the control method determination unit 17 determines the presence / absence of each operation of the long-period earthquake detector 8 and the rope breakage detection device 10, and the following according to the determination result The control method is determined (S103 to S109).

Operation 1-1: Neither the rope breakage detector 10 nor the long-period seismic detector 8 is in operation. Rope anomaly and long-period seismic motion are not detected. For this reason, it is assumed that no abnormality has occurred and normal operation is continued.

Operation 1-2: The rope breakage detecting device 10 is operated and the long-period seismic detector 8 is not operated. The rope breakage detecting device 10 is activated due to the occurrence of a rope abnormality such as strand breakage or running on the main rope 4. Judge. For this reason, the car 2 is brought to an emergency stop, and the elevator is brought into a state where it cannot be restarted.

Operation 1-3: No operation of the rope breakage detection device 10 and an operation of the long-period earthquake detector 8 It is determined that the building sways due to the occurrence of the long-period earthquake motion and the long-period earthquake detector 8 has been operated. For this reason, the elevator is shifted to a predetermined control operation (hereinafter referred to as “long-period earthquake control operation”) that minimizes damage and damage caused by the occurrence of long-period ground motion. Specifically, in the long-period seismic control operation, after the evacuation operation is performed and the car 2 is stopped at the nearest floor, the elevator is not easily affected by the long-period ground motion, that is, the main rope 4 or the control cable 7. The car 2 is made to travel to a position where it does not resonate with the shaking of the building (non-resonant floor) and stopped.
In the above retreat operation, the car 2 may be driven at a speed (low speed) slower than the normal speed during the entire stroke or a partial stroke such as after the nearest floor stop. In addition, after the car 2 stops at the non-resonant floor, the elevator is automatically operated in a normal condition under a predetermined condition (for example, when the shaking of the building falls below a predetermined threshold or when the passage of a predetermined time is detected). You may comprise so that it may return. When the automatic return function is not provided, normal operation is resumed by manual return by an elevator specialist, for example.

Operation 1-4: Both the rope breakage detection device 10 and the long-period seismic detector 8 are in operation. The operation of the rope breakage detection device 10 was performed due to the occurrence of strand breakage or the like of the main rope 4, or It is unclear whether the main rope 4 was shaken due to the occurrence of long-period ground motion. That is, it is not known whether the rope abnormality actually occurs. For this reason, in such a case, first, the retreat operation to the non-resonant floor is performed in consideration of the operation of the long-period earthquake detector 8. That is, after the car 2 is stopped at the nearest floor, the car 2 is traveled to a predetermined position where the elevator is not easily affected by the long-period ground motion, and is stopped. In this evacuation operation, as in the case of the above operation 1-3, the car 2 is caused to travel at a lower speed (lower speed) than the normal speed in the entire process or a part of the process such as after the nearest floor stop. May be.
Further, in consideration of the operation of the rope breakage detection device 10, the elevator is set in a non-restartable state so that the normal operation is not started in the same state after the retreat operation. Therefore, after that, the automatic return to the normal operation as performed in the above operation 1-3 is not performed, and a general user cannot use the elevator unless an inspection and return work by a specialist engineer is performed. Can not.

<Operation when the car 2 is stopped>
If it is determined in S101 that the car 2 is stopped, the control method determination unit 17 determines whether or not each of the long-period earthquake detector 8 and the rope breakage detection device 10 is in operation, and responds to the determination result. The following control method is determined (S110 to S116).

Operation 2-1: No operation of both the rope breakage detection device 10 and the long-period earthquake detector 8 Rope abnormality and long-period earthquake motion are not detected. For this reason, it is assumed that no abnormality has occurred and normal operation is continued.

Operation 2-2: The rope breakage detection device 10 is operated and the long-period seismic detector 8 is not operated. The rope breakage detection device 10 is activated due to the occurrence of a rope abnormality such as strand breakage or climbing of the main rope 4. Judge. For this reason, without starting the traveling of the car 2, the elevator is brought into a non-restartable state in the stopped state.

Operation 2-3: No operation of the rope breakage detection device 10 and an operation of the long-period seismic detector 8 It is determined that the building sways due to the occurrence of the long-period seismic motion, and the long-period seismic detector 8 has operated. For this reason, the elevator is shifted to long-period seismic control operation. Specifically, in the long-period seismic control operation, the evacuation operation is performed, and the car 2 travels from a currently stopped position to a predetermined position where the elevator is not easily affected by the long-period earthquake motion, and is stopped. Others are the same as operation 1-3.

Operation 2-4: Both the rope break detection device 10 and the long-period earthquake detector 8 are in operation. The operation of the rope break detection device 10 is due to the occurrence of a rope abnormality such as a strand break or the occurrence of a long-period earthquake motion. Is unknown. For this reason, in such a case, first, the retreat operation to the non-resonant floor is performed in consideration of the operation of the long-period earthquake detector 8. That is, the car 2 travels from a currently stopped position to a predetermined position where the elevator is not easily affected by long-period ground motion, and is stopped.
Further, in consideration of the operation of the rope breakage detection device 10, the elevator is set in a non-restartable state so that the normal operation is not started in the same state after the retreat operation. Therefore, after that, the automatic return to the normal operation as performed in the above operation 2-3 is not performed, and a general user cannot use the elevator unless an inspection and return work by a specialist engineer is performed. Can not. Others are the same as those of the operation 1-4.

<< Operation when the car 2 is traveling with passengers >>
When it is determined that there is a passenger in the car 2 in S102, the control method determination unit 17 determines the presence / absence of each operation of the long-period earthquake detector 8 and the rope breakage detection device 10, and the following according to the determination result The control method is determined (S117 to S123).

Operation 3-1: No operation of both the rope breakage detection device 10 and the long-period earthquake detector 8 Rope abnormality and long-period earthquake motion are not detected. For this reason, it is assumed that no abnormality has occurred and normal operation is continued.

Operation 3-2: The rope breakage detecting device 10 is operated and the long-period seismic detector 8 is not operated. The rope breakage detecting device 10 is activated due to the occurrence of a rope abnormality such as strand breakage or running on the main rope 4. Judge. For this reason, the car 2 is stopped on the nearest floor and a door opening / closing operation is performed in order to lower the passenger, and then the elevator is disabled.

Operation 3-3: No operation of the rope breakage detection device 10 and an operation of the long-period seismic detector 8 It is determined that the building sways due to the occurrence of the long-period seismic motion and the long-period seismic detector 8 has operated. For this reason, the elevator is shifted to long-period seismic control operation. Specifically, in the long-period seismic control operation, the evacuation operation is performed, the door 2 is opened / closed to stop the nearest floor and the passengers are lowered, and then the elevator reaches a predetermined position where it is not easily affected by the long-period earthquake motion. Run the car 2 and stop it. Others are the same as operation 1-3.

Action 3-4: Both the rope breakage detection device 10 and the long-period earthquake detector 8 are in operation. The operation of the rope breakage detection device 10 is due to the occurrence of a rope abnormality such as a strand break or the occurrence of a long-period earthquake motion. Is unknown. For this reason, in such a case, first, the retreat operation to the non-resonant floor is performed in consideration of the operation of the long-period earthquake detector 8. That is, after the car 2 is stopped on the nearest floor and a door opening / closing operation is performed in order to lower the passenger, the car 2 is caused to travel to a predetermined position where the elevator is not easily affected by long-period ground motion and stopped.
Further, in consideration of the operation of the rope breakage detection device 10, the elevator is set in a non-restartable state so that the normal operation is not started in the same state after the retreat operation. Therefore, after that, the automatic return to the normal operation as performed in the above operation 3-3 is not performed, and if the inspection and the return work by a specialist engineer are not performed, the general user cannot use the elevator. Can not. Others are the same as those of the operation 1-4.

  According to Embodiment 1 of the present invention, when both the long-period earthquake detector 8 and the rope breakage detection device 10 are provided in the elevator, the elevator is appropriately controlled according to the detection results of both. Will be able to.

That is, the control panel 6 (control method determination unit 17) is arranged such that when both the long-period earthquake detector 8 and the rope breakage detecting device 10 are operated, the elevator 2 is in a predetermined position where the elevator is not easily affected by the long-period earthquake motion. And then the elevator is disabled. Therefore, the car 2 is stopped without performing the retreat operation, or the elevator is returned to the normal operation in the state after the retreat operation even though the strand breakage of the main rope 4 has occurred. Can be surely prevented.
In particular, the operation 1-3, 2-3, and 3-3 are effective means when the function of automatically returning the elevator to the normal operation after the evacuation operation is provided.

In addition, the elevator control apparatus having the above-described configuration is naturally applicable to a new elevator, and may be applied to an existing elevator in which both or one of the long-period earthquake detector 8 and the rope breakage detection apparatus 10 is already installed. Can do.
For example, for an existing elevator in which both the long-period earthquake detector 8 and the rope breakage detecting device 10 are already installed, the functions of the control method determination unit 17 and the operation control unit 18 are provided on the control panel of the existing elevator. What is necessary is just to add newly. For the existing elevator where only the rope breakage detecting device 10 is already installed, a long-period earthquake detector 8 is newly installed in the building where the elevator is installed, and the control method determination unit 17 and the control panel of the existing elevator are installed. What is necessary is just to add the function of the operation control part 18 newly.
By such simple modification, the above-described effects can be imparted to the existing elevator.

It is a block diagram of the whole elevator containing the control apparatus in Embodiment 1 of this invention. It is a block diagram which shows the control apparatus of the elevator in Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the control apparatus of the elevator in Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the control apparatus of the elevator in Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the control apparatus of the elevator in Embodiment 1 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hoistway 2 Cage 3 Counterweight 4 Main rope 4a Speed governor rope 4b Compen rope 5 Hoisting machine 6 Control panel 7 Control cable 8 Long period seismic detector 9 Machine room 10 Rope break detection device 11 Bending car 12 Car weighing device DESCRIPTION OF SYMBOLS 13 Car camera 14 Car operation panel 15 Passenger presence determination part 16 Car traveling determination part 17 Control method determination part 18 Operation control part

Claims (9)

A long-period seismic detector that is installed in the building where the elevator is installed and detects shaking of the building caused by long-period ground motion;
A rope breakage detection device for detecting strand breakage of a rope in an elevator hoistway;
A control panel for controlling the operation of the elevator based on the detection results of the long-period earthquake detector and the rope breakage detection device;
With
The control panel, when both the long-period earthquake detector and the rope breakage detection device are operated simultaneously, after performing a retreat operation to stop the car at a predetermined position that is not easily affected by long-period ground motion, A control apparatus for an elevator, wherein the elevator is in a state in which it cannot be restarted. Passenger detection means for detecting the presence or absence of passengers in the car;
With
When both the long-period seismic detector and the rope breakage detection device are operated simultaneously, if the passenger detection means detects that there is a passenger in the car, the control panel stops the car at the nearest floor and opens and closes the door. The elevator control device according to claim 1, wherein after the operation is performed, a retreat operation is performed to stop the car at a predetermined position that is not easily affected by long-period ground motion.   When the long-period seismic detector operates and the rope breakage detector does not operate, the control panel performs a retreat operation to stop the car at a predetermined position that is not easily affected by long-period ground motion, and then The elevator control device according to claim 1 or 2, wherein the elevator is automatically returned to normal operation. A long-period seismic detector that is installed in the building where the elevator is installed and detects shaking of the building caused by long-period ground motion;
A rope breakage detection device for detecting strand breakage of a rope in an elevator hoistway;
An elevator control method comprising:
Determining the presence or absence of operation of the long-period seismic detector;
Determining the presence or absence of operation of the rope breakage detecting device;
When both the long-period earthquake detector and the rope breakage detecting device are operated simultaneously, performing a retreat operation for stopping the car at a predetermined position that is not easily affected by long-period earthquake motion;
After performing the evacuation operation, making the elevator in an unrestartable state;
An elevator control method comprising: Determining whether there are passengers in the car;
When both the long-period seismic detector and the rope breakage detecting device are operated simultaneously, and when the presence of passengers in the car is detected by the passenger detecting means, the car is stopped on the nearest floor and the door is opened and closed. ,
Performing a retreat operation to stop the car at a predetermined position that is not easily affected by long-period ground motion after stopping the car on the nearest floor;
The elevator control method according to claim 4, further comprising: When the long-period seismic detector operates and the rope breakage detection device does not operate, after performing the retreat operation to stop the car at a predetermined position that is not easily affected by long-period ground motion, the elevator is normally operated under the predetermined conditions. A step to automatically return to operation;
The elevator control method according to claim 4, wherein the elevator control method is provided. A long-period seismic detector that is installed in the building where the elevator is installed and detects shaking of the building caused by long-period ground motion;
A rope breakage detection device for detecting strand breakage of a rope in an elevator hoistway;
A control panel for controlling the operation of the elevator based on the detection results of the long-period earthquake detector and the rope breakage detection device;
In an existing elevator equipped with
When both the long-period seismic detector and the rope breakage detection device operate simultaneously, the elevator cannot be restarted after performing a retreat operation to stop the car at a predetermined position that is not easily affected by long-period ground motion. A method for refurbishing an existing elevator, wherein a function for making a state is newly added to the control panel. A rope breakage detection device for detecting strand breakage of a rope in an elevator hoistway;
Based on the detection result of the rope breakage detection device, a control panel for controlling the operation of the elevator,
In an existing elevator equipped with
A long-period seismic detector that detects shaking of buildings caused by long-period ground motion is newly installed in the elevator installation building.
When both the long-period seismic detector and the rope breakage detecting device are operated simultaneously, the elevator cannot be restarted after performing a retreat operation to stop the car at a predetermined position that is not easily affected by long-period ground motion. A method for refurbishing an existing elevator, wherein a function for making a state is newly added to the control panel.   When the long-period seismic detector operates and the rope breakage detector does not operate, the control panel performs a retreat operation to stop the car at a predetermined position that is not easily affected by long-period ground motion, and then The method for refurbishing an existing elevator according to claim 7 or 8, characterized by having a function of automatically returning the elevator to normal operation.

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