JP2011111307A - Elevator control device and control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure the safety of pit workers when resetting after the end of pit work. <P>SOLUTION: This elevator control device for the pit worker to go out to a hall from a pit after the end of pit work and to switch an elevator car 6 to a normal operation mode includes a means 21 for releasing a forced stop to lift the elevator car by a predetermined distance when receiving an ON operation signal of a safety switch; an operation procedure error determining means 22 determining an error in the reset operation procedure of the safety switch and an inspection switch performed by the worker; an attention calling means 23 giving a notice of an abnormal operation when determining the presence of an error in the operation procedure and urging the operator to carry out a reset operation to the normal operation procedure while continuously holding an inspection operation mode: a reset notifying means 24 giving a notice of the reset state when determining that the reset operation of the normal operation procedure is performed; and an operation limit release control means 25 switching to the normal operation mode when a predetermined operation based on an arrangement is performed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an elevator control device and a control method for ensuring the safety of a pit worker after pit work is completed.

  When one inspection worker performs work in the pit, the car is driven at a low speed and raised slightly from the lowest floor to prevent general users from entering the car. A gap is formed so as to fit inside. Here, after entering the landing from the car, the pit operator enters the pit through the gap, turns on the inspection switch in the pit, switches to the inspection operation mode, and performs necessary work including inspection in the pit. I do. The work in the pit may be performed jointly by a plurality of inspection workers.

  By the way, the inspection switch is not turned on immediately after one pit worker enters the pit through the gap from the landing or returns to the landing from the pit, so other collaborators and local management It is possible that a person enters the car and drives the car by mistake.

  Therefore, conventional elevator control devices include inspection operation start detection means for detecting the start of the pit inspection mode from the operation of the hall button on the lowest floor and the inspection switch in the pit, and the car based on the start of the pit inspection mode. The pit inspection operation means for raising the pit inspection distance, the inspection mode storage means for storing the execution of the pit inspection operation when the pit inspection operation is executed, and the memory of the pit inspection operation state of the inspection mode storage means are not released. And a check mode priority control means that does not shift to normal operation or pit check operation, and is configured to prevent others from driving in the car during the check in the pit (see, for example, Patent Document 1) ).

JP-A-11-130355

  Therefore, according to the technique described in Patent Document 1 described above, it is possible to prevent the car from being erroneously operated during work in the pit, but the inspection mode storage means stores the inspection execution state. When the pit worker returns from the pit to the bottom floor hall after releasing the pit operator, there is a mistake in the operation procedure of the pit worker himself / herself in the pit, and an error in the operation procedure by the collaborators and third parties. When the inspection switch is turned off, the car is switched to the normal operation mode and can be driven at high speed even though the pit worker is in the pit, and the pit worker is caught in the hoistway. It is possible.

  The present invention has been made in view of the above circumstances, and provides an elevator control device and a control method for ensuring the safety of a pit worker in a pit even if an operation procedure error occurs during a return operation after the end of the pit work. The purpose is to do.

  In order to solve the above-described problems, the present invention is based on at least an operation of turning off a safety switch in a pit among at least one of a car, an upper part of the car, an elevator control device, and a safety switch installed in the pit. After the pit work is completed, the elevator controller switches the car to the normal operation mode by exiting from the pit to the lowest floor hall, and is turned on from the safety switch that is turned off. When a signal is received, the forcible stop of the car is released, and a worker in the pit is provided with a gap to escape from the pit by raising the car by a predetermined distance under the manual operation of the operation panel by the pit worker. Output processing means, and a return operation of the safety switch and the inspection switch performed by any one of a pit worker, a joint worker, and a third party Return operation procedure error determination means for determining an error in the operation procedure, and when the return operation procedure error determination means determines that there is an error in the return operation procedure, an abnormal operation is notified and the corresponding operator is returned to the normal operation procedure. Cautionary means for continuously holding the inspection operation mode and determining again whether or not there is an error in the operation procedure by the return operation procedure error determination means, and return of the normal operation procedure by the return operation procedure error determination means A return notification means for notifying that the vehicle is in a return state when it is determined that an operation has been performed, and a drive restriction release control means for switching the operation mode of the car to the normal operation mode when a predetermined operation is performed according to a predetermined rule. And an elevator control device.

  In addition, the elevator control method according to the present invention releases the forced stop of the car and raises the car by a predetermined distance when receiving an on operation signal from a safety switch that is turned off for work in the pit. In this case, the operator output processing step in the pit for forming a gap to escape from the pit, and a mistake in the return operation procedure of the safety switch and the inspection switch performed by any one of the pit worker, collaborator and third party When it is determined that there is a mistake in the return operation procedure to be determined and the return operation procedure, the abnormal operation is notified to prompt the corresponding operator to return to the normal operation procedure set in advance and the inspection operation mode is continued. When it is determined that the return operation of the normal operation procedure has been performed by the holding alert step and the return operation procedure error determination step, A return notification step of notifying that, when performing predetermined operation in accordance with arrangements predetermined, a control method and a driving restriction cancellation control step of switching the operation mode of the car in the normal operation mode.

  According to the present invention, even if an operation procedure error occurs during the return operation after the completion of the pit work, the operation procedure error is reliably detected and the operation of the car is restricted. It is possible to provide an elevator control device and a control method that can be reliably ensured.

1 is an overall configuration diagram of an elevator including an embodiment of an elevator control device according to the present invention. The figure which looked at the hold door side from the hall side. The figure explaining a series of work procedures until a pit worker starts a pit work. The functional block diagram which shows one Embodiment of the control apparatus of the elevator shown in FIG. FIG. 5 is a flowchart for explaining the operation of the elevator control device according to the present invention and a simple return process after the end of pit work related to the elevator control method according to the present invention. FIG. 4 is a flowchart for explaining the operation of the elevator control device according to the present invention and more specific return processing after the end of the pit work related to the elevator control method according to the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 and 2.
FIG. 1 is a diagram showing the overall configuration of an elevator including an elevator control device according to the present invention, and FIG. 2 is a diagram of the hold door side in the direction of the arrow A in FIG.

  The hoistway 1 for installing an elevator is provided in various high-rise buildings. In the machine room above the hoistway 1, there are a control device 2 that controls the operation of the elevator 2, a hoisting machine 3 that rotates at a predetermined rotational speed under the operation control command of the control device 2, and the hoisting machine 3 A sheave 4 connected to the rotating shaft is installed. A main rope 5 is stretched over the sheave 4, and a car 6 is suspended from one end of the main rope 5, and a counterweight 7 is suspended from the other end.

  When the hoisting machine 3 and the sheave 4 rotate under the operation control command of the control device 2, the car 6 moves up and down opposite to the counterweight 7.

  The control device 2 and the car 6 are connected by a tail cord 8 for supplying power to the car 6 and exchanging necessary information with each other. The control device 2 may be installed at an appropriate location in the hoistway instead of the machine room.

  A car safety switch 11a, a car inspection switch 11b, and a car operation panel 11c are installed in the car 6.

  The in-car safety switch 11a is a switch that forcibly stops the raising / lowering of the car 6, and is used by an inspection operator to forcibly stop the car 6 during the inspection work.

  The in-car inspection switch 11b is a switch for switching the normal operation mode of the car 6 to the inspection operation mode when the inspection operator starts the inspection operation. The normal operation mode is an operation mode in which the car 6 can be driven at high speed according to call registration. The inspection operation mode is an operation mode in which the car 6 travels at an inspection speed under the manual operation of the inspection operator.

  The car operation panel 11c in the car is provided with a destination floor designation button, a door opening / closing button, and the like.

  Further, an upper car safety switch 12a, an upper car inspection switch 12b, an upper car operation panel 12c and a buzzer 13 are also provided on the upper portion of the car 6. The car safety switch 12a, the car inspection switch 12b, and the car operation panel 12c are switches and operation panels having the same functions as the car safety switch 11a, the car inspection switch 11b, and the car operation panel 11c. is there.

  The buzzer 13 is sounded under a predetermined condition when the car 6 is switched from the inspection operation mode to the normal operation mode.

  Further, a pit safety switch 14a, a pit inspection switch 14b and a car operation panel 14c in the pit are connected to the control device 2 via the cable 10 on the pit 9 side of the hoistway 1, and a pit safety switch is provided as necessary. 14a can be pulled out of the pit. The pit safety switch 14a, the pit inspection switch 14b, and the car operation panel 14c in the pit are also switches and operation panels having the same functions as the car safety switch 11a, the car inspection switch 11b, and the car operation panel 11c. is there.

  Further, a safety switch 15a, an inspection switch 15b, and a car operation panel 15c are installed in the control device 2. The safety switch 15a, the inspection switch 15b, and the car operation panel 15c have the same functions as the car safety switch 11a, the car inspection switch 11b, and the car operation panel 11c.

  When any one of the safety switches 11a or 12a, 14a, 15a is turned off, a transition is made to the forced stop mode, and the car 6 is forcibly stopped.

  Similarly, when any one of the inspection switches 11b or 12b, 14b, 15b is turned on, the operation mode is changed to the inspection operation mode, and the car 6 runs at the inspection speed under the operation of the inspection operator.

  In FIGS. 1 and 2, 16 is a lower floor hall, 17 is a lower floor hold door, 18 is a lower floor hall button for performing call registration when getting on the car 6, and 19 is an interface provided in the hold door 17. A lock 20 is an interlock switch installed on the car door side in cooperation with the front end side of the interlock 19.

  The interlock 19 is a mechanism for locking the car door (not shown) of the car 6 and the hold door 17 so that the hold door 17 opens when the car door (not shown) and the hold door 17 are engaged. It is. The interlock switch 20 is turned off when the hold door 17 or the like is opened, and the interlock switch 20 is turned on when the hold door 17 or the like is closed. As a result, the control device 2 recognizes the open / closed state of the hold door 17 and the like based on the on / off signal of the interlock switch 20.

  Next, a series of work procedures until the pit worker starts the pit inspection work in the elevator as described above will be described with reference to FIG. The inspection procedure is generally performed conventionally.

  The elevator car 6 is operated in the normal operation mode (S1). In the normal operation mode, the pit worker calls the car, gets into the car 6, turns on the car inspection switch 11b (S2), and switches the operation mode of the car 6 to the inspection operation mode (S3).

  Here, in order to secure a space for entering the pit 9, the pit worker moves the car 6 from the floor of the lowest floor upward by a predetermined distance and stops (S4).

  The pit operator stops the car 6 at a predetermined height position, then goes down from the car 6 to the lowest floor hall 16 and releases the interlock 19 using a special tool in order to enter the pit inspection work. The lowest floor hold door 17 is opened (S5). At this time, the control device 2 receives the OFF signal of the interlock switch 20 accompanying the release of the interlock 19 and confirms that the lower floor holder 17 is open for pit work.

  Therefore, the pit worker turns off the pit safety switch 14a (or the safety switch 11a in the car by the collaborator) attached to the tip of the cable drawn from the pit 9 to the lowest floor hall 16, for example. (S6) After the car 6 is forcibly stopped, it enters the pit 9 (S7).

  After entering the pit, the pit worker turns on the pit inspection switch 14b (S8). That is, ON setting is performed by duplexing the in-car inspection switch 11b and the pit inspection switch 14b (S2, S8). For example, the inspection operation mode is maintained by turning on the pit inspection switch 14b even if the in-car inspection switch 11b is turned off to enter the normal operation mode due to a deviation or difference in recognition of the joint worker or the like. Similarly, even if the pit worker turns off the pit inspection switch 14b by mistake, the inspection operation mode is maintained by turning on the in-car inspection switch 11b.

  Here, when the pit worker needs to inspect the lower side of the car 6, the pit safety switch 14a is turned on (S9), the forced stop of the car 6 is released, and the pit worker is manually operated. Set to the state that can be operated in the inspection operation mode. At this time, if the collaborator is in the car 6, for example, the car safety switch 11a is turned on in response to a contact from a pit worker.

  Here, the pit worker operates the car operation panel 14c in the pit, or the collaborator operates the car operation panel 11c in the car, and moves the car 6 downward, so that the lower part of the car 6 can be inspected. Stop when it reaches the position (S10). The pit operator lowers the car 6 to the inspection position, and then turns off the pit safety switch 14a again to set the car 6 to a forced stop state (S11).

  Accordingly, by completing the above-described series of work procedures, the pit inspection work in the pit and the lower part of the car 6 can be started.

  FIG. 4 is a functional block configuration diagram relating to a series of return processing after the end of the pit inspection work, among the configurations for explaining an embodiment of the elevator control device according to the present invention.

  When the elevator control device 2 receives the ON signal of the pit safety switch 14a, the elevator control device 2 determines that the pit inspection work is finished, cancels the forced stop of the car 6, and manually operates the car operation panel 14c in the pit by the pit worker. By capturing the operation signal and raising the car 6 by a predetermined distance, the pit worker output processing means 21 that secures a space for the pit worker to leave the pit 9, the pit worker, other collaborators and The return operation procedure error determination means 22 for determining a mistake in the return operation procedure for the three parties, and when it is determined that there is an error in the operation procedure, the buzzer 13 is sounded and the lowest floor hall button 18 blinks, Caution means 23 for prompting the normal return operation, and when it is determined that the normal return operation has been performed, the pit worker promptly moves from the pit to the bottom. When the pit operator or the like performs an operation based on, for example, a predetermined arrangement of the interlock 19 while holding the inspection operation mode and the return notification means 24 that notifies the exit to the hall 16 side, the car 6 is set in the normal operation mode. It is comprised by the driving | operation restriction cancellation | release control means 25 to which it transfers to.

  Next, the operation of the elevator control apparatus configured as described above and a simple return processing example after the end of the pit work relating to the elevator control method according to the present invention will be described with reference to FIG.

  The elevator control device 2 executes the pit worker output processing means 21 when the pit worker performs a predetermined operation for exiting the pit 9 after the pit work is completed.

  That is, when the pit safety switch 14a is turned on (S21), the in-pit worker output processing means 21 determines that the pit work is finished and releases the forced stop of the car 6 (S22).

  After the safety switch 14a is turned on, the in-pit worker output processing means 21 moves the car 6 upward by a predetermined distance in accordance with the manual operation of the in-pit car operation panel 14c by the pit worker, so that the pit worker can exit. A void is formed (S23). These steps S21 to S23 correspond to in-pit worker output processing steps.

  Subsequently, the elevator control device 2 executes the return operation procedure error determination means 22. This return operation procedure error determination means 22 determines whether or not the pit operator has operated in accordance with a predetermined normal operation procedure in order to get out of the pit (S24), and is not operating in accordance with the normal operation procedure. In this case, it is determined that there is an operation procedure error (S25). These steps S24 and S25 correspond to a return operation procedure error determination step.

  When it is determined that the operation procedure is incorrect, the elevator control device 2 executes the alerting means 23. The alerting means 23 sounds the buzzer 13 intermittently to notify the abnormal operation and blinks the lowest floor hall button 18 to prompt the pit worker to perform a return operation according to the normal operation procedure. At this time, the elevator control device 2 continuously holds the inspection operation mode (S26).

  After that, the alerting means 23 determines whether the pit worker has returned to the normal operation procedure by returning the switch related to the operation procedure error (S27), and when the return operation has not been performed yet. Returning to step S25, the same processing is repeated, and when it is determined that the return operation is being performed, the abnormal operation notification by the buzzer 13 is stopped, the hall button 18 is turned off (S28), the process returns to step 24, and again. It is determined whether the operation is performed according to the normal operation procedure. These steps S26 to S28 correspond to a warning step.

  The elevator control device 2 executes the return notification means 24 when it is determined in step S24 that the elevator control device 2 is operated according to the normal operation procedure. Here, the return notification means 24, for example, generates a continuous sound different from step S26 from the buzzer 13 or another buzzer (not shown) (S29), and promptly causes the pit worker to enter the hall from the pit 9. Inform you that you will be out. This step S29 corresponds to a return notification step.

  Thereafter, the elevator control device 2 executes the operation restriction release control means 25.

  The operation restriction release control means 25 determines whether or not the car 6 is in the door zone (S30). When the car 6 is not in the door zone, the threshold level when the car door of the car 6 is opened is the lowest floor hall 16. After the relevel control is performed so as to match the floor surface (S31), the inspection operation mode is switched to the normal operation mode (S32). These steps S29 to S32 correspond to an operation restriction release control step.

  Furthermore, an example of the return processing after the end of the pit work related to the operation of the elevator control device according to the present invention and the elevator control method according to the present invention will be specifically described with reference to FIG. That is, FIG. 6 is a diagram for more specifically explaining the flow of the return process of FIG.

  When the pit worker finishes the pit inspection work, the pit worker output processing means 21 for exiting the pit 9 is executed.

  The pit worker output processing means 21 of the elevator control device 2 determines that the pit inspection work is completed when detecting an ON signal (stop release signal) of the pit safety switch 14a by the operation of the pit worker (S211). At this time, if there is a collaborator in the car 6, it is determined whether or not the car safety switch 11a in the car 6 is on (S212). Here, when the car safety switch 11a in the car 6 is not in the ON state, a car safety switch on instruction is issued from the control device 2 or the pit worker (S213), and the car safety switch 11a is turned on. As a result, step S212 is established, and the forced stop of the car 6 is released (S214).

  After the safety switches 11a and 14a are turned on, the in-pit worker output processing means 21 receives manual operation of the in-pit car operation panel 14c by the pit worker or manual operation of the in-car operation panel 11c by the collaborator. Then, the car 6 is moved upward by a predetermined distance in accordance with the operation instruction to form a clearance space for the pit worker to escape (S215). These steps S211 to S215 correspond to in-pit worker output processing steps.

  Subsequently, the elevator control device 2 executes the return operation procedure error determination means 22. This return operation procedure error determination means 22 is required to forcibly stop the car 6 in order for the pit operator to exit from the pit through the clearance gap, but without turning off the pit safety switch 14a. (S221) When the pit inspection switch 14b is accidentally turned off (S222), and the in-car inspection switch 11b is accidentally turned off by a collaborator (S223), the car 6 is in a state capable of high-speed operation. It is determined that the operation procedure is incorrect (S224). These steps S221 to S224 correspond to a return operation procedure error determination step. Conventionally, since the operation mode is switched to the normal operation mode at this stage, a high-speed operation is possible.

  Note that these steps S221 to S223 are an example of an operation procedure error. However, since there are actually a plurality of operation procedure errors, here the operation procedure performed by the operator matches each operation procedure error. If any one of the operation procedure mistakes is determined, it is determined that there is an operation procedure error.

  The elevator control device 2 executes the alerting means 23 when it is determined that the operation procedure is incorrect. When it is determined that there is an operation procedure error, the alerting means 23 sounds the buzzer 13 intermittently and blinks the lowest floor hall button 18 to prompt the pit worker to perform the normal return operation again. At this time, the elevator control device 2 is maintained in the inspection operation mode (S231).

  Thereafter, the alerting means 23 determines whether or not the pit operator has performed an operation to restore the switch related to the operation procedure error (S232), and if the operation has not yet been performed, the process returns to step S224. The same process is repeated, and when it is determined that the switch return operation related to the operation procedure error is performed, the abnormality notification by the buzzer 13 is stopped, the hall button 18 is turned off (S233), and the process returns to step 221 to return to normal. It is determined whether or not the pit safety switch 14a serving as an operation procedure is in an off state. If the pit safety switch 14a is in an off state, it is determined that the operation procedure is a normal operation procedure. These steps S231 to S233 correspond to a warning step.

  Subsequently, when it is determined that the normal operation procedure related to work return has been performed, the elevator control device 2 executes the return notification means 24.

  The return notification means 24, for example, generates a continuous sound from the buzzer 13 or another buzzer (not shown) (S241) and is in a return state due to the completion of the work. Informs you that you will be in the hall. At this time, the elevator control device 2 is maintained in the inspection operation mode (S242). Steps S241 and S242 correspond to a return notification step.

Further, the elevator control device 2 executes the operation restriction release control means 25.
After the pit worker exits from the pit 9 to the lowermost hall 16 and closes the hold door 17 in the lowermost hall 16, it is necessary to switch from the inspection operation mode to the normal operation mode.

  Therefore, the operation restriction release control means 25 turns on / off the interlock switch 20 a specified number of times using, for example, the dedicated tool described above for releasing the interlock 19 in the lower floor hall 16 by the pit worker. If repeated, the number of repetitions of ON / OFF is counted, that is, it is determined from the predetermined operation of the interlock 19 as preparation for switching to the normal operation mode (S251).

  Therefore, the driving restriction release control means 25 determines whether or not the car 6 is at the sill level on the hold door side (S252), and when it is not at the sill level, the sill level when the car door of the car 6 is opened is determined. After performing the relevel control so as to match the floor surface of the lowermost hall 16 (S253), the inspection operation mode is switched to the normal operation mode (S254). These steps S251 to S254 correspond to restriction release control steps.

  Therefore, according to the embodiment as described above, the pit safety switch 14a by the pit operator, even though the pit worker is in the pit 9, during the return operation procedure after the end of the pit work of the elevator, As a result of erroneous operation of the pit inspection switch 14b and the normal operation procedure of the in-car safety switch 11a and the in-car inspection switch 11b by the collaborator, the operation mode is shifted to the normal mode. When an error occurs in the operation procedure, the inspection operation mode is maintained and the operation procedure error is alerted, so that the pit worker or the like can be prompted to shift to the normal operation procedure by an incorrect switch return operation.

  Further, when a normal operation procedure return operation is performed after the work is completed, a notification by a normal return ringing is made, so that the pit operator can be informed that he / she will promptly exit the pit 9.

  In addition, according to this embodiment, after the pit worker goes out to the lowest floor hall 16, a predetermined operation (for example, turning on / off the interlock switch 20 for a specified number of times) is performed using a dedicated tool for interlocking. ), The car 6 does not shift from the inspection operation mode to the normal operation mode, so that the safety of the pit work can be ensured.

  Further, when an off signal of the pit inspection switch 14b is detected at least when the car 6 is in a movable state due to forgetting to turn off the pit safety switch 14a, the inspection operation mode is maintained, while using the dedicated tool. Since the control device 2 does not switch from the inspection operation mode to the normal operation mode unless a signal for canceling is output, safety control for the pit worker can be realized without adding a special circuit or device.

  In addition, operators with specialized knowledge, for example, divert the dedicated tools that they carry with them during elevator inspection and perform return operations. The safety at the time of return accompanying the end of the pit work can be significantly improved.

(Other embodiments)
(1) In the above embodiment, the combination control is performed by turning on and off the switches 11a and 11b in the car 6 and the switches 14a and 14b in the pit 9. For example, the switches 14a and 14b in the pit 9 and the car Even when combined control is performed by turning on / off the switches 12a and 12b (15a and 15b) in the upper part or in the control device 2, the safety at the time of return of the pit worker upon completion of the pit work is ensured as described above. Can do.

(2) In the above embodiment, the operation limit of the car 6 at the time of return accompanying the end of the pit work is in the maintenance of the inspection operation mode. In the present invention, however, the pit worker has the car 6 and the balance in the pit 9. In order to avoid being sandwiched between the weights 7, the following operation restriction may be performed when the double release of the switches 14b and 11b is performed in steps S222 and S223.

I. By performing control so that the driving mode of the car 6 is maintained in the driving prohibition mode (driving prohibition), at least the pit worker does not travel unless the driving prohibition is canceled by exiting the pit 9 by a predetermined operation. The safety of pit workers can be secured.

B. By performing control in which the car 6 is re-leveled at the lowermost floor and other than the top floor, and control that enables only the door open button of the car operation panel 11c in the car 6 to be operated after the re-level control, Since the operation of the door close button of the car operation panel 11c is not accepted, it is difficult to travel with the door of the car 6 closed, and the safety of the pit worker can be ensured. However, when such an operation restriction method is adopted, in step 32, the restriction release of the car operation panel 11c and the transition process to the normal operation mode are performed.

C. Control in which the car 6 is releveled to other than the lowermost floor and the uppermost floor, and control to make the lowermost floor and the uppermost floor non-stopped and return to the normal operation mode after the relevel control may be performed. However, when such a driving | running | working restriction | limiting method is employ | adopted, in step S254, it is necessary to perform the non-stop cancellation | release process by the lowest floor and the top floor.

  Therefore, any of the above-described operation restriction methods can achieve the same effects as those in the above embodiment.

(3) In the above embodiment, the operation restriction is released by the operation restriction release control means 25 using the dedicated tool in the lowermost floor hall 16. Or, only those who have expertise can know, for example, repeatedly releasing the hall button on each floor or the hall button on a specific floor by turning it on and off a specified number of times, or pressing and holding the hall button on each floor for a certain time or longer Even if it is the method of canceling, the same effect can be produced.

(4) Although the buzzer 13 is provided in the upper part of the car 6, it may be provided in the car 6 or in the lowest floor hall 16.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments. For example, some constituent elements may be omitted from all the constituent elements shown in the embodiment. Furthermore, you may combine the component covering different embodiment suitably.

  DESCRIPTION OF SYMBOLS 1 ... Hoistway, 2 ... Control apparatus, 6 ... Riding car, 7 ... Counterweight, 11a, 12a, 14a, 15a ... Safety switch, 11b, 12b, 14b, 15b ... Inspection switch, 11c, 12c, 14c, 15c ... Car operation panel, 13 ... buzzer, 16 ... bottom floor hall, 17 ... hold door, 18 ... bottom floor hall button, 19 ... interlock, 20 ... interlock switch, 21 ... worker output processing means in pit, 22 ... Return operation procedure error determination means, 23... Alerting means, 24 .. return notification means, and 25.

Claims (11)

A safety switch and an inspection switch are provided in the cab, at the top of the cab, at least one part of the elevator control device and in the pit, respectively. In the elevator control device, where an operator enters the hall from the pit and switches the car to the normal operation mode,
When an on operation signal is received from the safety switch that is off, the car is forcibly stopped and the car is raised a predetermined distance under manual operation of the operation panel by the pit operator. In-pit worker output processing means for providing a gap to exit from the pit,
A return operation procedure error determination means for determining an error in an operation procedure related to a return operation of the safety switch and the inspection switch performed by any of the pit worker, a collaborator and a third party;
When this return operation procedure error determination means determines that there is an error in the return operation procedure, the abnormal operation is notified and the corresponding operator is urged to return to the normal operation procedure, and the inspection operation mode is continuously maintained, and again. A warning means for determining whether or not there is an error in the operation procedure by the return operation procedure error determination means;
When it is determined that the return operation procedure error determination means has performed the return operation of the normal operation procedure, return notification means for notifying that the return operation procedure is in a return state;
An elevator control device comprising: an operation restriction release control means for switching the operation mode of the car to a normal operation mode when a predetermined operation is performed according to a predetermined rule.   The elevator control device according to claim 1, wherein the alerting means executes control for maintaining a travel prohibition mode instead of continuing the inspection operation mode.   The alerting means includes means for performing relevel control on the lowermost floor and other than the uppermost floor, and means for performing control to enable operation of only the door opening button of the car after the relevel control. The elevator control device according to claim 1.   The alerting means includes means for performing relevel control at other than the lowest floor and the top floor, means for setting the bottom floor and the top floor as non-stop floors after the relevel control, and returning to the normal operation mode after the relevel control. The elevator control device according to claim 1, further comprising:   The elevator control device according to claim 1, wherein the alerting unit performs a control of blinking a lowest floor hall button.   The alerting means links the control for encouraging the corresponding operator to return to the normal operation procedure by sounding the buzzer installed in the car and the control for blinking the lowest floor hall button. The elevator control device according to claim 1.   The operation restriction release control means executes control for shifting to the normal operation mode when the interlock switch of the lowermost floor holder is repeatedly turned on and off a predetermined number of times with a dedicated tool for interlock. The elevator control device according to claim 1.   2. The elevator control according to claim 1, wherein the operation restriction release control unit executes control to shift to the normal operation mode when the lowermost hall button repeats ON / OFF a predetermined number of times. apparatus.   2. The elevator control device according to claim 1, wherein the operation restriction release control unit executes control to shift to the normal operation mode when the lowermost hall button is pressed for a predetermined time. A safety switch and an inspection switch are provided in the cab, at the top of the cab, at least one part of the elevator control device and in the pit, respectively. In the elevator control method in which an operator enters the hall from the pit and switches the car to the normal operation mode,
When an on operation signal is received from a safety switch that is turned off, the forcible stop of the car is released and the car is lifted by a predetermined distance to form a gap for exiting from the pit. Steps,
A return operation procedure error determination step for determining an error in a return operation procedure of the safety switch and the inspection switch performed by either the pit worker, a collaborator or a third party,
When it is determined that there is a mistake in the return operation procedure, an abnormal operation is notified and the corresponding operator is urged to return to the predetermined normal operation procedure, and at the same time, a warning step for continuously maintaining the inspection operation mode;
A return notification step for notifying that a return operation has been performed when it is determined that a return operation of the normal operation procedure has been performed by the return operation procedure error determination step;
An elevator control method comprising: an operation restriction release control step for switching the operation mode of the car to a normal operation mode when a predetermined operation is performed according to a predetermined rule. 11. The operation restriction release control step of performing any one of the following (1) to (3) process control to release the restriction on the operation mode of the car. Elevator control method.
(1) The control for shifting to the normal operation mode is executed when the interlock switch of the lowermost floor holder is repeatedly turned on and off for a specified number of times using a dedicated tool for interlock.
(2) Control is performed to shift to the normal operation mode when the lowermost hall button is repeatedly turned on and off a specified number of times.
(3) When the lowermost floor hall button is pressed for a predetermined time, control for shifting to the normal operation mode is executed.

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