JP2009161309A - Device and method for operation for seismic emergency of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for the operation for the seismic emergency of an elevator capable of preventing any damage of an elevator apparatus caused when a long component such as a main rope is oscillated by an earthquake and hooked to a projection or the like in a hoistway, and safely conveying passengers in a car to a closest floor to prevent them from being confined therein. <P>SOLUTION: Hooking of a long component in the moving direction of a car is detected, and if there occurs such a troublesome hooking, the car is subjected to the emergency stop, the moving direction is inverted, and the car is stopped at a closest floor at a low speed while detecting again any hooking of the long component in the moving direction of the car. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a seismic control operation apparatus and method for stopping an elevator at the nearest floor when a predetermined shaking of a building is detected due to an earthquake or strong wind while the elevator is running.

  Non-patent document 1 discloses a conventional elevator control operation. The flow is shown in FIG. The conventional elevator control operation is started when an earthquake occurs and the (extra low) level of the earthquake detector is activated. At this time, if the (low) level of the seismic detector is not operating and the elevator is running, after driving the car to the nearest floor, stop the car, and after a certain period of time ( ) The level sensor can be reset to return to normal operation.

  Also, when the (low) level of the seismic detector is activated, if it is not in the express zone, the operation is stopped after driving the car to the nearest floor. On the other hand, in the express zone, the following measures have been taken. That is, when the elevator is running, the (low) level of the seismic detector is activated, so that the elevator is first brought to an emergency stop. Here, under the condition that the safety device is normal and the (high) level sensor is not operating, the vehicle is driven at a low speed to the nearest floor in the direction away from the counterweight, and is stopped after arrival. .

Ministry of Land, Infrastructure, Transport and Tourism, Housing Bureau Building Guidance Division, “Explanation of Elevator Technical Standards”, 2002, page 2-95

  In conventional elevator control operations, passengers may be trapped in the car if adverse conditions overlap. That is, if a building is shaken by an earthquake, and long objects such as main ropes, balancing ropes (including chains), tail cords, governor ropes, etc. are shaken and caught on the equipment in the tower, the position and operation of the car Depending on the direction, it may not be possible to stop the nearest floor. For example, in the following five cases during the control operation, the car cannot be moved, the passenger cannot reach the nearest floor, and the passenger may be trapped in the car.

  (1) The main rope is disconnected or disconnected from the sheave.

  (2) The balance rope is disengaged or disconnected from the sheave.

  (3) Operation of the emergency stop device or cutting of the governor rope when the governor rope is fixed.

(4) Tail cord disconnection or cutting. And (5) Modification of the car.

  Further, as described above, since there is a possibility that the elevator apparatus may be greatly damaged, a lot of time is required for the restoration work of the elevator.

  An object of the present invention is to speed up the restoration of an elevator without damaging the elevator equipment even if a predetermined displacement (such as a catch) of a long object occurs.

  Another object of the present invention is to provide a seismic control operation of an elevator that can safely reach the nearest floor and increase the chance of escaping passengers.

  In a preferred embodiment of the present invention, a seismic control of an elevator having a long object such as a main rope, a balance rope, a tail cord, a governor rope, and a detection device for detecting a lateral displacement of the long object in the event of an abnormality. In the operation device, during the seismic control operation based on the detection of the shaking of the building, the predetermined displacement of the long object is detected, and it is determined whether the displacement is likely to hinder the current car. To do.

  In a preferred embodiment of the present invention, when it is determined that there is a risk of preventing the current car from proceeding, the car is emergency stopped, and the driving direction is reversed after the emergency stop.

  Further, in a preferred embodiment of the present invention, the car is emergency stopped, and the fact that the direction is reversed is guided into the car prior to the direction reversal.

  According to the preferred embodiment of the present invention, since the emergency stop is performed before the elevator apparatus is seriously damaged, the restoration work of the elevator is facilitated.

  In addition, according to the preferred embodiment of the present invention, in the control operation to the nearest floor, it is possible to increase the chances of reaching the nearest floor.

  Furthermore, according to a preferred embodiment of the present invention, it is possible to relieve passengers by guiding that the direction is reversed in the car before the direction is reversed.

  Other objects and features of the present invention will be clarified in the embodiments described below.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a cross-sectional view showing an outline of an elevator control operation apparatus according to an embodiment of the present invention. A car 2 and a counterweight 3 in the elevator hoistway 1 are suspended by a main rope 5 wound around a hoisting machine 4, and the main rope 5 drives the car 2 and the counterweight 3 up and down. A tail cord 6 is suspended from the lower part of the car 2 to supply power to the car 2 and to communicate with the outside of the car, and the other end is fixed to the hoistway wall at the intermediate floor level. Move up and down as 2 moves up and down. The governor rope 7 circulates between the speed governor 8 and the tensioning weight 9, and both ends are fixed to the emergency stop device lifting portion 10 of the car 2. The balance rope 11 connects the balance weight 3 to the lower part of the car 2, and compensates and balances the weight of the main rope 5 when, for example, the elevator travels long. A rope or a chain is used as the balance rope, but both are referred to as a balance rope.

  Among the above components, when the elevator travel is long, the long objects that are shaken by the earthquake and crosswind are the main rope 5, the tail cord 6, the governor rope 7, and the balance rope 11. These shaken long objects may move up and down while touching or catching protrusions in the hoistway 1 at a position where the shake is large. In such a case, depending on the position of the car and the driving direction, the car cannot be moved due to the obstacles such as (1) to (5) described above, and it cannot reach the nearest floor, and passengers can enter the car. There is a risk of being trapped. In addition, since there is a possibility that the elevator apparatus may be damaged greatly, it takes a lot of time to restore the elevator. Therefore, a detection device for detecting a predetermined displacement of such a long object is provided.

  The detection devices 12 and 13 for detecting a predetermined displacement (hook) of the main rope 5 that suspends the car are normally located away from the main rope 5 and in the lateral direction of the main rope 5 at the time of abnormality. A predetermined displacement is detected. The detection device 14 for detecting the catch of the tail cord 6 hung from the lower part of the car is normally located away from the tail cord 6 and detects a predetermined lateral displacement of the tail cord 6 at the time of abnormality. The detectors 15 and 20 for detecting a predetermined displacement (hook) of the balance rope 11 suspended from the balance weight 3 with the car 2 are located away from the normal balance rope 11 and are balanced at the time of abnormality. A predetermined displacement in the lateral direction of the rope 11 can be detected. The detecting devices 16 and 17 for detecting predetermined displacements (hooks) on the upper side and the lower side of the governor rope 7 connected to the emergency stop device lifting portion 10 of the car 2 are normally located away from the governor rope 7 and are in an abnormal state. The predetermined displacement in the lateral direction of the governor rope 7 is detected. The detection devices 18 and 19 for detecting a predetermined displacement (hook) of the main rope 5 that suspends the counterweight 3 are located away from the normal main rope 5 and the predetermined predetermined lateral displacement of the main rope 5 at the time of abnormality. Is detected. The predetermined displacement (hook) detection device includes a predetermined displacement (hook) detection unit 22 and a determination unit 23 provided in the controller 21. The predetermined displacement detection unit 22 always monitors the predetermined displacement (hook), and the determination unit 23 receives a signal from the predetermined displacement detection unit 22 to determine whether the car 2 can be operated in the vertical direction. to decide.

  FIG. 2 is a processing flow of an elevator seismic control operation according to an embodiment of the present invention.

  In step 201, an earthquake occurs, and in step 202, it is determined whether or not the (special low) level sensor is operated. If the sensor is not operating, the routine proceeds to step 203 and normal operation is continued.

  When the (extra low) level sensor is activated, first, in step 204, the seismic control light is turned on, and in step 205, the presence or absence of the operation of the (low) level sensor is checked. If the (low) level sensor is not operating, the process proceeds to step 206. If the elevator is running, the driving direction and the car position are confirmed in step 207. At the same time, in step 208, based on the presence / absence of a predetermined displacement of each long object and the relationship between the driving direction and the car position, the judgment data table set and recorded in advance is referred to, and the safety when proceeding as it is Drive to the nearest floor while checking. If the predetermined displacement of any long object is not detected, or if it is safe to proceed as it is even if some of the long objects are detected, the elevator is moved to the nearest floor in step 209. It will be stopped. After that, it is the same as part (a) of FIG. 4 and opens the door, lowers the passenger, closes the door, waits, and after a predetermined time, the (special low) level sensor is manually or automatically reset to operate normally. Return to.

  Now, if it is determined in step 208 that there is a risk of advancing as it is, the process proceeds to step 210 to emergency stop the elevator, and in step 211 it is instructed to reverse the driving direction in the car and Tell the situation. Next, in step 212, the position of the car is confirmed, the driving direction is reversed, the vehicle is driven at a low speed in step 213, and in step 214, it is confirmed that it is safe to proceed as it is. Stop to the floor. If it is determined in step 214 that the progress as it is is dangerous, it is unavoidable. Therefore, in step 215, the operation is stopped as it is.

  Here, the determination of whether or not there is a danger when proceeding as it is in steps 208 and 214 and similar steps 220 and 231 described later will be described.

  FIG. 3 is a data table for determination when a predetermined displacement (hook) of the main rope 5, the governor rope 7, the tail cord 6, and the compen- sion rope 11, which are long objects, is detected in one embodiment of the present invention. It is. When a predetermined displacement of each long object is detected by each of the predetermined displacement detection devices 12 to 20 shown in FIG. 1, a case where it is considered dangerous is detected from the position of the car 2 and its traveling direction. The case of “valid” of “No” and the case of not considered dangerous are indicated as “invalid” of detection. This figure shows determination data when the car is lifted up (underslang) 2 to 1 roping as shown in FIG. As is apparent from the figure, depending on whether the current car is above or below the intermediate floor and the current driving direction of the car, the displacement of the long object may interfere with the progress of the current car. It is a data table in which whether or not there is set. In the case of the main rope 5, the governor rope 7, and the compensation rope 11 except for the tail cord 6, it can be seen that the determination is determined only by the driving direction regardless of the position of the car.

  In the determination step of “is it dangerous to proceed as it is” in FIG. 2, any one of the detection devices 12 to 20 that have detected a predetermined displacement determines whether or not “effective” in FIG. 3 from the current car position and its driving direction. ”Means YES, that is, dangerous.

  Now, referring back to FIG. 2, in step 205, if the earthquake is a strong earthquake in which the (low) level sensor also operates, it is confirmed in step 216 that the elevator is running, and in step 217 the presence of an express zone is checked. . If there is an express zone, in step 218, it is confirmed whether or not the car is in a position where it can be landed on an arbitrary floor by running for about 10 seconds. If it is within the range, the driving direction and the car position are confirmed at step 219. At the same time, in step 220, the process proceeds as it is with reference to the determination data table of FIG. 3 set and recorded in advance based on the presence / absence of predetermined displacement of each long object and the relationship between the driving direction and the car position. Drive to the nearest floor while checking the safety of the car. If the predetermined displacement of any long object is not detected, or if it is safe to proceed as it is even if the predetermined displacement of some long objects is detected, the elevator is moved to the nearest floor in step 221. It will be stopped. Thereafter, the situation is the same as part (b) of FIG. 4, the situation is guided into the car, the door is opened, the passenger is lowered, and then the door is closed and the operation is stopped in a stopped state.

  If the determination result in step 218 is NO, and there is no floor that can be landed nearby, the process proceeds to step 222, and the elevator is temporarily stopped. In step 223, it is confirmed whether or not the safety-related circuit of the elevator is normal. If the safety-related circuit is abnormal, it is inevitable that the operation is stopped at step 224.

  Only when it can be confirmed in step 223 that the safety-related circuits of the elevator are normal, and in step 225, it is confirmed that the (high) level sensor due to a greater shaking than before is not operating. Proceed to step 226. In step 226, after waiting for about 1 minute, the car is driven at a low speed in the direction away from the weight 3, and the vehicle is stopped at the nearest floor while confirming the safety in the traveling direction as described above.

  If it is detected in step 225 that the (high) level sensor has been operated due to greater shaking than before, an artificial remedy under the intervention of an expert is performed, as in FIG. Will be taken.

  On the way to the nearest floor, if it is determined in step 220 that there is danger in the progress as it is, the elevator is emergency stopped in step 227, and the driving direction is reversed in the car in step 228. To inform passengers of the status of the elevator. Next, in step 229, the position of the car is confirmed, the driving direction is reversed, and in step 230, the vehicle is driven at a low speed. Stop to the floor. If it is determined in step 231 that the progress as it is is dangerous, it is unavoidable. Therefore, in step 232, the operation is stopped as it is.

  According to this embodiment, when predetermined displacements of the main rope 5, the governor rope 7, the tail cord 6, and the compen- sion rope 11 that are long objects are detected, it is determined whether or not the displacement is dangerous to proceed as it is. Judgment is made, and if there is a danger, an emergency stop is performed, so the danger can be avoided. At this time, the driving direction is reversed, the vehicle is driven at a low speed, and it is stopped to the nearest floor while confirming that the advance is safe, so the chance of trapping passengers can be significantly reduced.

  In FIG. 1, the 2: 1 roping has been described. However, even if the roping changes, if the catch detection device is attached to the portion where the counterweight 2 and the counterweight 3 are suspended by the main rope 5 A similar effect can be obtained. It goes without saying that the hoisting machine 4 is not installed in the hoistway 1 and can be similarly implemented in an elevator with a machine room.

It is sectional drawing which shows the outline | summary of the control operation apparatus of the elevator by one Example of this invention. It is a processing flow of the elevator earthquake control operation by one Example of this invention. It is a data table for judgment when the predetermined displacement of the long thing in one example of the present invention is detected. It is a processing flow figure of the seismic control operation in elevator technical standards.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Hoistway, 2 ... Riding car, 3 ... Balance weight, 4 ... Hoisting machine, 5 ... Main rope, 6 ... Tail cord, 7 ... Governor rope, 8 ... Speed governor, 9 ... Weight for tension, 10 ... Car Emergency stop device lifting part, 11 ... Balance rope, 12, 13 ... Predetermined displacement (hook) detecting device of the car side main rope, 14 ... Predetermined displacement (hook) detecting device of the tail cord, 15, 20 ... Predetermined displacement (hook) detecting device of balance rope, 16, 17... Predetermined displacement (hook) detecting device of governor rope, 18, 19... Predetermined displacement (hook) detecting device of counterweight side main rope, 21... Controller, 22... Predetermined displacement (hook) detection unit, 23.

Claims (10)

  Based on the detection of building shaking in an elevator seismic control operation device having a long object such as a main rope, a balance rope, a tail cord, a governor rope, and a detection device for detecting a lateral displacement of the long object A means for detecting a predetermined displacement of the long object during a seismic control operation, and a determination means for determining whether the detected displacement is a displacement that may hinder the current car's progress. A seismic control operation device for elevators.   2. An elevator seismic control operation device according to claim 1, further comprising means for emergency stopping the car when said judging means judges that there is a risk of hindering the current car.   In Claim 1, when the said determination means determined that there exists a possibility that the progress of the present car might be prevented, it was provided with the means to make an emergency stop of a car, and the direction inversion means to reverse a driving direction after this emergency stop. Elevator seismic control operation device.   4. The earthquake control operation device for an elevator according to claim 3, further comprising a direction reversal guide means for guiding the direction reversal into the car prior to the direction reversal.   5. The determination means according to claim 1, wherein the determination means for determining whether or not the detected displacement is a displacement that may interfere with the current car is whether the current car is above or below the intermediate floor. And a data table in which whether or not the displacement of the long object is likely to hinder the progress of the current car according to the current driving direction of the car is provided. Driving device.   Detection of building shaking in a seismic control operation method of an elevator having a long object such as a main rope, a balancing rope, a tail cord, a governor rope, and a detection device for detecting a lateral displacement of the long object in the event of an abnormality And a step of detecting a predetermined displacement of the long object and a step of determining whether the detected displacement is a displacement that may interfere with a current car. An elevator seismic control operation method characterized by the above.   7. The method according to claim 6, further comprising a step of emergency stopping the car and a direction reversing step for reversing the driving direction after the emergency stop when it is determined in the determination step that there is a risk of preventing the current car from proceeding. An elevator seismic control operation method.   8. The method according to claim 7, further comprising a direction reversal guide step for guiding the direction reversal into the car prior to the direction reversal.   9. The determination step according to claim 6, wherein the determination step for determining whether or not the detected displacement is a displacement that is likely to hinder the progress of the current car includes a current car position and a current car driving direction. And a method of reading and determining a data table in which whether or not the displacement of the long object is likely to interfere with the current car is determined. .   9. The determination step according to claim 6, wherein the step of determining whether or not the detected displacement is a displacement that may interfere with the current car is whether the current car is above or below the intermediate floor. And a step of reading and determining a data table in which whether or not the displacement of the long object is likely to hinder the progress of the current car according to the current driving direction of the car is provided. Elevator seismic control operation method.

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