JP2011084355A - Control device of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To quickly detect failure of its detecting part, when detecting door opening travel of a car by using a plurality of detecting parts. <P>SOLUTION: This control device of an elevator has a door opening travel preventive device 14 for preventing the door opening travel of the car, and includes a travel speed detecting part 8 for detecting a travel speed of the car 5, a plurality of door opening travel allowing zone detecting parts 12a and 12b arranged in the same height position and detecting a range of a door opening travel allowing zone of respective story floors, and a failure detecting part 15 for detecting the failure of the door opening travel allowing zone detecting parts 12a and 12b. The failure detecting part 15 determines that the door opening travel allowing zone detecting parts for outputting an OFF signal cause OFF failure when the travel speed of the car 5 is a preset value or less and a detection signal from the door opening travel allowing zone detecting parts 12a and 12b is an ON signal of detecting that the car 5 is positioned in the door opening travel allowing zone and an OFF signal of detecting that the car 5 is not positioned in the door opening travel allowing zone. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an elevator control device, and more particularly, to an elevator control device that can detect that a detector that detects the opening of a passenger car has failed.

  When the elevator car reaches the elevator hall, the car door of the elevator car and the landing door of the elevator hall are engaged with each other, and the door is opened in conjunction with the elevator car.

  In recent years, there has been a report that a car that has landed at an elevator hall and opened a car door will start moving upward or downward with the car door open (hereinafter referred to as "open door driving"). Has been. When the car travels with the door open, it is necessary to perform an emergency stop on the car that has started the door-open travel, for example, by operating an emergency brake.

  As a method for detecting the door opening travel of the car, for example, as described in Patent Document 1 below, it is provided in the vicinity of the elevator hall of the hoistway by a floor level detection switch provided in the car. There is known a method for detecting a receiving plate and using the detection result.

JP 2007-55691 A

  However, in the method described in Patent Document 1, it cannot be determined whether or not the floor level detection switch is out of order. It cannot be detected.

  The present invention has been made to solve such a problem, and its purpose is to promptly detect that the detection unit has failed when detecting the opening of a car using a plurality of detection units. It is to be.

  A first feature according to an embodiment of the present invention is a travel speed detection unit that detects a travel speed of the car in an elevator control device that includes a door open travel prevention device that prevents the car from opening the door. A plurality of door opening allowed zone detection units that detect the range of the door opening allowed zone set for each floor, and a failure in the door opening allowed zone detection unit is detected. A failure detection unit that detects a traveling speed of the car detected by the traveling speed detection unit equal to or lower than a set value, and a detection signal from the door opening allowed travel zone detection unit When an ON signal for detecting that the car is located in the door-open travel allowance zone and an OFF signal for detecting that the car is not located in the door-open travel allowance zone, an OFF signal is set. The door opening running to output Description zone detection unit is to determined to be off-failure.

  A second feature according to the embodiment of the present invention is to detect a door zone range set for each floor in an elevator control device provided with a door-opening travel prevention device for preventing a car from opening the door. A door zone detection unit, a plurality of door open travel allowance zone detection units that are provided at the same height and detect the range of the door open travel allowance zone set for each floor; and a detection signal from the door zone detection unit; A position detection unit that detects a position of the car based on a detection signal from the door-open travel allowance zone detection unit, and a failure detection unit that detects a failure of the door-open travel allowance zone detection unit, The failure detection unit detects that the position detection unit is located in the door opening allowed travel zone, and a detection signal from the door opening allowed travel zone detection unit is within the door opening allowed zone. To the basket When the ON signal for detecting the position and the OFF signal for detecting that the car is not positioned within the door opening allowed travel zone, the door opening allowed travel zone detecting unit that outputs the OFF signal is turned off. It is to judge that it is out of order.

  According to the present invention, when a plurality of door opening allowed travel zone detection units are used to detect the door opening travel of a car, if the door opening allowed travel zone detection unit fails, the failure is promptly detected. This can be detected, and the accuracy of the door-opening travel prevention performed using the detection result of the door-open travel allowance zone detection unit can be enhanced.

It is a mimetic diagram showing a schematic structure of an elevator of a 1st embodiment of the present invention. It is a timing chart explaining the off failure of the door opening travel tolerance zone detection part in a failure detection part. It is a timing chart explaining the ON failure of the door opening travel tolerance zone detection part in a failure detection part. It is a schematic diagram which shows schematic structure of the elevator of the 2nd Embodiment of this invention. It is a flowchart explaining the detection of the off failure and the on failure of the door-open travel allowance zone detection unit.

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

(First embodiment)
An elevator according to a first embodiment of the present invention will be described with reference to FIGS. An elevator hoistway 1 is formed in the building, and a hoisting machine 2 and a speed governor 3 are installed in the upper part of the elevator hoistway 1.

  The hoisting machine 2 includes a motor, a pulley, and a brake (a brake for normal operation and a brake for emergency stop). An elevator rope 4 is wound around the pulley of the hoisting machine 2, a car 5 is connected to one end of the elevator rope 4, and a counterweight 6 is connected to the other end of the elevator rope 4. The motor of the hoisting machine 2 is driven by control from an elevator control unit (not shown) that controls the entire elevator. When the motor is driven, the pulley of the hoisting machine 2 rotates and the pulley rotates. The car 5 and the counterweight 6 are moved up and down in opposite directions.

  The speed governor 3 includes a pulley, and a speed controlling rope 7 connected to the car 5 is wound around the pulley of the speed governor 3. The speed governor 3 is connected to a traveling speed detector 8 that detects the traveling speed of the car 5, and the traveling speed detector 8 detects the traveling speed of the passenger car 5 as the passenger car 5 moves up and down. This is done by calculating from the number of rotations of the pulley of the governor 3.

  In the elevator hoistway 1, landing plates 10 are attached at positions corresponding to the elevator halls 9 on the floors, and these landing plates 10 are used to define the range of the door opening travel allowance zone. In addition, the door opening travel allowance zone is allowed to allow the car 5 to travel in the up and down direction (run the door open) in a state where the car door 11 provided in the car 5 is open. It is a range. For example, the open door travel allowance zone is set to about ± 107.5 mm from the correct landing position of the car 5 on each floor.

  The car 5 is provided with a door open / close detector 12 for detecting the open / closed state of the car door 11 and two door open travel allowance zone detectors 13a and 13b. The two door-open travel allowance zone detection units 13a and 13b are provided at the same height, and when facing the landing plate 10 of each floor as the car 5 moves up and down, the facing landing detection is performed. The plate 10 is detected. When the car door 11 of the car 5 landing on the elevator hall 9 is opened, if the door opening allowed travel zone detection units 13a and 13b detect the landing plate 10, It means that the car 5 is located in the door opening allowed zone.

  The elevator according to the first embodiment is provided with a door-open travel prevention device 14 for preventing the car 5 from being opened. The door opening / closing prevention device 14 is connected to a door opening / closing detection unit 12, door opening / running allowance zone detection units 13a, 13b, and the hoisting machine 2. When the car door 11 of the car 5 that has landed on the elevator hall 9 is opened, the door-opening travel prevention device 14 does not detect the door-opening travel allowance zone detectors 13a and 13b. If it is determined that the car 5 has been opened, the emergency stop brake of the hoist 2 is actuated to prevent the car 5 from being opened. In addition, what the door opening travel prevention device 14 drives in order to prevent the car 5 from opening the door is not limited to the emergency stop brake of the hoisting machine 2, but is located at a place away from the hoisting machine 2. A dedicated brake device for preventing door-opening travel may be provided.

  Furthermore, the elevator according to the first embodiment is provided with a failure detection unit 15 that detects a failure of the door-open travel allowance zone detection units 13a and 13b. The failure detection unit 15 is connected to the traveling speed detection unit 8 and the door-open travel allowance zone detection units 13a and 13b, and the travel speed of the car 5 detected by the travel speed detection unit 8 and the door-open travel allowance zone. Based on the signal indicating whether or not the detection plates 13a and 13b have detected the test plate 10, it is detected that the door-open travel allowance zone detection units 13a and 13b are in an off failure or an on failure. Note that the off-failure is to output an off signal because the door-opening travel allowance zone detection units 13a and 13b should detect the receiving plate 10, but the on-failure is to open the door. The allowable zone detectors 13a and 13b output an on signal even though an off signal should be output in order not to detect the test plate 10.

  FIGS. 2 and 3 are timing charts for explaining the failure detection of the door-opening travel allowable zone detection units 13a and 13b in the failure detection unit 15. FIG.

  The timing chart of FIG. 2 shows a case where the elevator car 5 that moves up and down stops at the elevator hall 9 on a certain floor, and the door-open travel allowance zone detection units 13a and 13b stop opposite to the test plate 10. Yes.

  When the car 5 that moves up and down reaches the elevator hall 9 on a certain floor, the traveling speed of the car 5 is gradually reduced and eventually stops. Therefore, when the traveling speed of the car 5 decelerated to stop at the elevator hall 9 becomes equal to or lower than the set value (V1), the detection signal from the door opening permitted travel zone detectors 13a and 13b is turned on. In the case of a signal (a signal indicating that the receiving plate 10 is being detected) and an off signal (a signal indicating that the receiving plate 10 is not being detected), the door opening allowed zone where the off signal is output It is determined that the detection unit 13b has an off failure.

  The timing chart of FIG. 3 shows the case where the car 5 passes through the elevator hall 9 on a certain floor, and the door opening allowed travel zone detection units 13a and 13b face the test plate 10 in the process of passing. Yes.

  The traveling speed of the car 5 when passing through the elevator hall 9 is not decelerated, and the traveling speed of the car 5 detected by the traveling speed detector 8 is equal to or higher than the set value (V2). In this case, if the detection signal from the door opening allowed travel zone detectors 13a, 13b is an on signal for a predetermined time (T) or longer, the door open travel permitted zone detection that outputs the on signal for a predetermined time (T) or longer. It is determined that the unit 13b has an on failure. The predetermined time (T) is the time during which the door-open travel allowance zone detectors 13a and 13b face the test plate 10 when the car 5 passes through the elevator hall 9.

  The detection result in the failure detection unit 15 is transmitted to an elevator control unit that controls the entire elevator, and notification that the door opening allowed travel zone detection units 13a and 13b have failed is performed. The manager of the elevator performs maintenance of the door-opening travel permission zone detection units 13a and 13b based on this notification.

  In such a configuration, according to the first embodiment, when one of the door opening allowed zone detection units 13a and 13b has an off failure or an on failure, the failure is detected by the traveling speed detection unit 8. The failure detection unit 15 can detect the traveling speed of the car 5 that has been used, and the maintenance of the door-open travel allowance zone detection units 13a and 13b can be quickly performed.

  Therefore, when the door open travel prevention is performed using the detection results of the two door open travel allowance zone detection units 13a and 13b, the occurrence of a state in which both of the door open travel allowance zone detection units 13a and 13b are out of order. Can be prevented, and the detection of the occurrence of door-opening traveling can be reliably performed using the detection results of the door-opening travel-permitted zone detection units 13a and 13b, and the accuracy of prevention of door-opening travel can be improved. be able to.

(Second Embodiment)
The elevator of the 2nd Embodiment of this invention is demonstrated based on FIG.4 and FIG.5. In addition, the same code | symbol is attached | subjected to the same component as the component demonstrated in 1st Embodiment, and the overlapping description is abbreviate | omitted.

  The elevator according to the second embodiment includes a door-opening travel allowance zone detection unit 13a, 13b, a door-opening travel prevention device 14, a door zone detection unit 21a, 21b, a position detection unit 22, and a failure detection unit 23. I have.

  The door zone detectors 21a and 21b are attached to the car 5 so as to be positioned above and below the door-open travel allowance zone detectors 13a and 13b, and face the landing plate 10 on each floor as the car 5 is raised and lowered. If this is the case, the facing plate 10 positioned oppositely is detected. When any one of the door zone detectors 21 a and 21 b detects the landing plate 10, the detection range thereof is the car door 11 of the car 5 landing on the elevator hall 9 and the landing door of the elevator hall 9 (not shown). And the door zone that can be opened together.

  The position detection unit 22 is connected to the door opening allowed travel zone detection units 13a and 13b and the door zone detection units 21a and 21b. When the detection signals from these door opening allowed zone detection units 13a and 13b and the door zone detection units 21a and 21b are input, the position detection unit 22 causes the car 5 to move to the door based on the input detection signals. It is detected whether or not the vehicle is in the open travel allowance zone. .

  The position detection unit 22 and the open door travel allowance zone detection units 13a and 13b are connected to the failure detection unit 23. When the failure detection unit 23 receives detection signals from the position detection unit 22 and the door-opening travel allowable zone detection units 13a and 13b, the door-opening travel allowable zone detection unit 13a is based on the input signals. , 13b is detected to be off or on.

  FIG. 5 is a flowchart for explaining the detection of the off-failure and the on-failure of the door opening allowed travel zone detectors 13a and 13b.

  First, when the car 5 stops, it is determined whether one of the door zone detectors 21a and 21b detects the receiving plate 10 to output an ON signal (S1).

  When it is determined that the ON signal has been output (YES in S1), it is determined whether the ON signal has been output by detecting one of the door opening allowed travel zone detection units 13a (S2). ).

  When it is determined that the ON signal is output from the door-open travel allowance zone detection unit 13a (YES in S2), the other signal is output when the other door-open travel allowance zone detection unit 13b detects the test plate 10. It is determined whether it has been performed (S3).

  Then, the door open travel allowance zone detection unit 13a detects the detection plate 10 and determines that an ON signal is output (YES in S2), and the door open travel allowance zone detection unit 13b detects the detection plate 10. When it is determined that the ON signal is output (YES in S3), it is determined that the car 5 is located in the door opening allowed zone (S4), and the door opening allowed zone detection is performed. It is determined that there is no failure in the units 13a and 13b (S5), and the series of failure detection operations is terminated.

  In step 2, when the door open travel allowance zone detector 13a does not detect the receiving plate 10 and determines that the ON signal is not output (NO in S2), the door open travel allowance zone detector 13b detects the arrival. It is determined whether or not an ON signal is output by detecting the plate 10 (S6).

  Then, the door opening allowed travel zone detecting unit 13a does not detect the test plate 10, and therefore it is determined that no ON signal is output (NO in S2), and the door open travel allowed zone detecting unit 13b detects the test plate 10. If it is determined that the ON signal is output (YES in S6), it is determined that the car 5 is located in the door opening allowed zone (S7), and the door opening allowed zone detection is performed. It is determined that one of the units 13a and 13b has an off failure (S8), and the series of failure detection operations is terminated.

  In Step 3, when the door-opening travel allowance zone detection unit 13b determines that the ON signal is not output because the detection plate 10 is not detected (NO in S3), the determination in Step 7 and Step 8 is performed.

  In step 6, when the door opening allowed travel zone detection unit 13b does not detect the test plate 10 and determines that no ON signal is output (NO in S6), the car 5 is within the door open travel allowed zone. A series of failure detection operations are terminated without determining whether or not the vehicle is located and whether or not the door-opening travel allowance zone detectors 13a and 13b are broken.

  Even when it is determined in step 1 that both of the door zone detectors 21a and 21b do not output an ON signal by detecting the receiving plate 10 (NO in S1), one of the door opening allowed travel zone detectors 13a It is determined whether or not an ON signal is output by detecting the receiving plate 10 (S9).

  When it is determined that the ON signal is output from the door-open travel allowance zone detection unit 13a (YES in S9), the other signal is output when the other door-open travel permission zone detection unit 13b detects the test plate 10. It is determined whether it has been performed (S10).

  Then, the door open travel allowance zone detection unit 13a detects the detection plate 10 and determines that the ON signal is output (YES in S9), and the door open travel allowance zone detection unit 13b detects the detection plate 10. When it is determined that the ON signal is output (YES in S10), it is determined that the car 5 is located in the door opening allowed zone (S11), and the door opening allowed zone detection is performed. It is determined that there is no failure in the units 13a and 13b (S12), and the series of failure detection operations is terminated.

  In step 9, when the door open travel allowance zone detector 13a does not detect the receiving plate 10 and determines that no ON signal is output (NO in S9), the door open travel allowance zone detector 13b detects the arrival. It is determined whether or not an ON signal is output by detecting the plate 10 (S13).

  Then, the door open travel allowance zone detection unit 13a does not detect the test plate 10 and determines that no ON signal is output (NO in S9), and the door open travel allowance zone detection unit 13b detects the test plate 10. If it is determined that the ON signal has been output (YES in S13), it is determined that the car 5 is located outside the door open travel allowance zone (S14), and the door open travel allowance zone detection is performed. It is determined that one of the units 13a and 13b has an on failure (S15), and the series of failure detection operations is terminated.

  In Step 10, when the door opening allowed travel zone detector 13b does not detect the test plate 10 and determines that no ON signal is output (NO in S10), the determination in Step 14 and Step 15 is performed.

  In step 13, when the door open travel allowance zone detection unit 13b does not detect the test plate 10 and determines that the ON signal is not output (NO in S13), the car 5 is in the door open travel allowance zone. A series of failure detection operations are terminated without determining whether or not the vehicle is located and whether or not the door-opening travel allowance zone detectors 13a and 13b are broken.

  The detection result in the failure detection unit 23 is transmitted to an elevator control unit that controls the entire elevator, and notification that the door opening allowed zone detection units 13a and 13b have failed is performed. The manager of the elevator performs maintenance of the door-opening travel permission zone detection units 13a and 13b based on this notification.

  In such a configuration, according to the second embodiment, when one of the door opening allowed travel zone detection units 13a and 13b has an off failure or an on failure, the failure is detected by the door zone detection units 21a and 21b. The detection result and the detection result of the door opening allowed travel zone detectors 13a, 13b can be detected, and the maintenance of the door open travel allowed zone detectors 13a, 13b can be quickly performed.

  Therefore, when the door open travel prevention is performed using the detection results of the two door open travel allowance zone detection units 13a and 13b, the occurrence of a state in which both of the door open travel allowance zone detection units 13a and 13b are out of order. Can be prevented, and the detection of the occurrence of door-opening traveling can be reliably performed using the detection results of the door-opening travel-permitted zone detection units 13a and 13b, and the accuracy of prevention of door-opening travel can be improved. be able to.

5 Passenger car 8 Travel speed detectors 13a, 13b Door open travel allowance zone detector 14 Door open travel prevention device 15 Failure detectors 21a, 21b Door zone detector 22 Position detector 23 Failure detector

Claims (4)

In an elevator control device equipped with a door-opening travel prevention device for preventing the car from opening the door,
A traveling speed detector for detecting the traveling speed of the car;
A plurality of door-open travel allowance zone detection units that are provided at the same height position and detect the range of the door-open travel allowance zone set for each floor;
A failure detection unit for detecting a failure of the door opening allowed travel zone detection unit,
In the failure detection unit, the traveling speed of the car detected by the traveling speed detection unit is equal to or less than a set value, and a detection signal from the door opening allowed travel zone detection unit is within the door opening allowed travel zone. The door open travel allowance zone detection that outputs an off signal when an on signal that detects that the car is located and an off signal that detects that the car is not located within the door open travel allowance zone. An elevator control device characterized in that a part is determined to be off-failed.   The failure detection unit detects that the traveling speed of the car detected by the traveling speed detection unit is equal to or greater than a set value, and detects that the car is located in the door-open travel allowance zone. When the detection signal from the permissible zone detection unit is an on signal for a predetermined time or more, it is determined that the door-opening travel permissible zone detection unit that outputs the on signal for a predetermined time or more has an on failure. The elevator control device according to Item 1. In an elevator control device equipped with a door-opening travel prevention device for preventing the car from opening the door,
A door zone detector for detecting the range of the door zone set for each floor;
A plurality of door-open travel allowance zone detection units that are provided at the same height position and detect the range of the door-open travel allowance zone set for each floor;
A position detection unit that detects the position of the car based on a detection signal from the door zone detection unit and a detection signal from the door opening allowed travel zone detection unit;
A failure detection unit for detecting a failure of the door opening allowed travel zone detection unit,
The failure detection unit detects that the position detection unit is located in the permissible zone, and a detection signal from the door-opening travel permissible zone detection unit indicates that the car is located in the permissible zone. When the ON signal for detecting that the car is not in the permissible zone and the OFF signal for detecting that the car is not located in the permissible zone, the open door travel permissible zone detection unit that outputs the off signal has an off failure. An elevator control device characterized by:   The failure detection unit detects that the position detection unit does not position the car in the permissible zone, and a detection signal from the door-opening travel permissible zone detection unit indicates that the car is located in the permissible zone. The door open travel allowance zone detection unit that outputs an on signal has an on failure when it is an on signal that detects that the car is not within the permissible zone. An elevator control device characterized by:

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