JP5069625B2 - Elevator control device - Google Patents

Description

It relates to the control device for an elevator, a technology related to the control of the hand lines cormorants elevator upon particular maintenance.

Conventionally, as an elevator maintenance operation device, a landing operation switch provided at the landing is operated, and the elevator car is lowered to a position where it can be put on the ceiling of the car, and maintenance inspection is performed. At that time, in consideration of the danger that the operation of the car will be performed at any landing driving switch on any floor, only the landing driving switch on the floor where the car is located can be operated. Technology that prevents danger, for example, a technology that operates a hall operation switch to move the car to the maintenance car zone, so that the car can be operated only by the hall operation switch with the car is known. (See Patent Document 1).
JP-A-8-59119

  The prior art has problems such as an increase in the cost of having to separately provide a landing operation switch and wiring for the landing on each floor, and insufficient safety measures against malfunction of the door zone detector.

  Accordingly, it is an object of the present invention to provide an elevator control device that does not require a separate landing operation switch on each floor and that is not in maintenance operation so that the maintenance inspection target elevator cannot be moved by anyone other than maintenance personnel.

In order to solve the above problems, the present invention adopts the following configuration.
Normal operation control means for normal operation of the group-managed elevator, maintenance operation control means for maintenance operation of the elevator, operation switching information means for switching the operation of the elevator to normal operation control means and maintenance operation control means, and door zone detection In an elevator control device comprising door zone information means for inputting detection information from a car and car position information means for inputting position information from a car position detector ,
A position from the car position detector that the car is located on the floor from which the maintenance operation control means outputs the operation signal of the interlock switch provided on the landing door and the operation signal of the interlock switch. When the information and the door zone information from the door zone detector that the car is outside the door zone are received together, the floor surface of the floor where the interlock switch that outputs the operation signal is provided and the upper part of the car are the same surface The movement of the car is controlled so that

In the elevator control device, the maintenance operation control means controls the movement of the car to a predetermined position for maintenance inspection above the lower floor when the output signal of the interlock switch is at the lower floor. It is characterized by.

  Further, the operation signal in the interlock switch is a predetermined on / off operation signal.

  There is a cost advantage in group-managed elevators because there is no special equipment, and the car is moved during maintenance operation using an interlock switch that is not normally operated using a dedicated tool. Since it is possible only when the operation signal is a predetermined operation, there is no possibility that the elevator malfunctions, and the safety is improved.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
1 is an elevator configuration diagram, FIG. 2 is an overall configuration diagram of a group-managed elevator, FIG. 3 is a flowchart showing a maintenance operation start operation, FIG. 4 is a flowchart showing another maintenance operation start operation, and FIG. FIG. 6 and FIG. 7 are flowcharts showing other maintenance operation end operations.

In FIG. 1, the hall call buttons 1a, 1b and 1c connected to the elevator control device 2 (hereinafter referred to as “the hall call button 1” when referring to them collectively), the hall door 40, and the hall on each floor. An interlock switch 41 is provided at the upper part of the platform door 40 on the side of the car 3 so that the elevator door cannot enter the elevator operation unless the door is closed.
Further, in the hoistway, the car 3 cooperates with a counterweight 4 connected by a main rope 5 via a car 3 and a sheave 6 of a driving machine, and a door zone detector 8 of the car 3. Door zone detectors 7a, 7b, 7c and a limit switch 12 are disposed.

The rotary shaft of the sheave 6 is provided with an encoder 9 whose output is input to the car position information means 21 of the control device 2 to detect the car position, and the output of the door zone detector 8 is also the door zone of the control device 2. Based on the information, it is detected whether the car is in the door zone position.
Further, the output of the limit switch 12 is input to the limit switch information means 22 to detect the terminal position of the car.

In the car 3, a maintenance operation switch 10a for switching between normal operation and maintenance operation, an invalid switch 10b for invalidating the operation of the landing button 1 by a third party, and maintenance on the ceiling of the car 3 are provided. There is provided a car maintenance operation switch 11 for switching between operation and maintenance operation on the car, and the outputs of the maintenance operation switch 10a, the invalid switch 10b, and the car maintenance operation switch 11 are all sent to the operation switching information means 24 of the control device 2. Entered.

  The control device 2 switches the operation of the elevator from the normal operation control means 20 that executes the normal operation to the maintenance operation control means 30 that executes the maintenance operation based on the outputs of the maintenance operation switch 10a and the invalid switch 10b. Means 24, car position information means 21 for detecting the car position based on the output of the encoder 9, limit switch information means 22 for detecting the position of the car 3 based on the output of the limit switch 12, and the door zone detector 8 Door zone information means 23 for detecting whether the car 3 is located in the door zone based on the output of the car, car height information means 31 for storing the height of the car determined by the building, and driving history for storing the driving history The storage unit 32 and the like are included.

The maintenance operation control means 30 includes car height information means 31, operation history storage means 32, car position information means 21, limit switch information means 22, door zone information means 23, interlock switch 41 on / off information, Maintenance operation control of the car 3 is performed based on the interlock switch operation determination means 33 that determines whether the on / off operation of the interlock switch 41 satisfies a predetermined operation condition.
The normal operation control means 20 includes an output from the hall call button 1, an output from a destination floor button (not shown) provided in the car 3, a car position information means 21, a limit switch information means 22, a door zone. Based on the information means 23, the on / off information of the interlock switch 41, etc., the driving machine provided with the sheave 6 is rotationally controlled to perform the normal operation control of the car 3.

  As shown in FIG. 2, a plurality of elevators (50, 51, 52) are provided on each floor, and the plurality of elevators (50, 51, 52) are group-managed by a group management operation panel 53. The hall call button 1 is also a common circuit.

Next, the maintenance operation start operation will be described based on the flowchart of FIG.
In response to the hall call button 1, the control device 2 stops the elevator at a specific floor where the hall call button is pressed, and stores the position of the car 3 on the stop floor (step S101).
Next, when the user enters the car 3 and turns on the maintenance operation switch 10a and the invalid switch 10b, the operation switching information means 24 receives the outputs and switches the elevator operation control to the maintenance operation control means 30 to perform the maintenance operation ( Step S102).
Next, the car 3 is moved out of the door zone about 150 mm up and down with respect to the floor of the hall by operating an operating means (not shown) in the car (step S103).
The moving direction at this time, that is, whether the movement is upward or downward is also stored in the control means 2 (step S104).
After the movement of step 103, the car 3 is entered to the landing, the car 3 is emptied and the door is closed (step S105), and the landing door interlock switch 41 is turned off with a dedicated tool (step S106).

Next, it is determined whether or not the floor on which the interlock switch 41 is output coincides with the floor stored in step S101 (step S107). If not, the process proceeds to step S113 to cancel the maintenance operation. To finish.
On the other hand, when it is determined in step S107 that the values match, the process proceeds to step S108, and the OFF period of the interlock switch 41 turned off in step S106 is constant so as not to erroneously detect the instantaneous OFF of the interlock switch 41. It is determined whether or not it has been held for a certain period of time (step S108). If it is determined that it has not been held for a certain period of time, the process proceeds to step S113, where the maintenance operation is canceled and the process ends.
When it is determined that the determination in step S108 has been held for a certain period of time, a car buzzer (not shown) issues a ringing notification for a predetermined period of time (step S109).

Next, it is determined whether or not the interlock switch 41 has returned to the on state within a certain time after the ringing is stopped in Step 109 (Steps S110 to S111). In Steps S110 to S111, the interlock switch 41 is turned on within a certain time. When it is determined that it has not returned to the on state, the process proceeds to step S113, the maintenance operation is canceled, and the process ends.
On the other hand, when the interlock switch 41 returns to the ON state within a predetermined time in the steps S110 to S111, the predetermined maintenance position, that is, the maintenance where the ceiling of the car and the floor of the stop floor are the same surface. When the predetermined position for inspection or when the stop floor is the lowermost floor, the car 3 is moved to the predetermined position for maintenance inspection that is sufficiently elevated to allow maintenance personnel to enter the pit, and the maintenance operation start operation ends. (Step S112).

Next, a maintenance operation start operation with improved safety compared to the maintenance operation start operation shown in the flowchart of FIG. 3 will be described based on the flowchart of FIG.
The difference between the maintenance operation start operation shown in the flowchart of FIG. 3 and the maintenance operation start operation shown in the flowchart of FIG. 4 is that the ON / OFF operation of the interlock switch 41 is increased, and the instantaneous ON / OFF of the switch is increased. It is a point that eliminates the chance when it occurs.

Hereinafter, it demonstrates in detail along the flow of a flowchart.
In response to the hall call button 1, the control device 2 stops the elevator at a specific floor where the hall call button is pressed, and stores the position of the car 3 on the stop floor (step S201).
Next, when the user enters the car 3 and turns on the maintenance operation switch 10a and the invalid switch 10b, the operation switching information means 24 receives the outputs and switches the elevator operation control to the maintenance operation control means 30 to perform the maintenance operation ( Step S202).
Next, the car 3 is moved out of the door zone range of about 150 mm in the vertical direction by operating an operating means (not shown) in the car (step S203).
The movement direction at this time, that is, whether the movement is upward or downward is also stored in the control means 2 (step S204).

After the movement in step S203, the car 3 enters the landing, empties the car 3, closes the door (step S205), and turns off the interlock switch 41 with a dedicated tool (step S206).
Next, it is determined whether or not the floor from which the interlock switch 41 is turned off matches the floor stored in step S201 (step S207). If not, the process proceeds to step S220 to cancel the maintenance operation. To finish.

On the other hand, if it is determined in step S207 that they match, the process proceeds to step S208, and the OFF period of the interlock switch 41 turned off in step S206 is constant so as not to erroneously detect the instantaneous OFF of the interlock switch 41. It is determined whether or not it has been held for more than a time (step S208), and if it is determined that it has not been held for a certain period of time, the process proceeds to step S220, where the maintenance operation is canceled and the process ends.
When it is determined that the determination in step S208 has been held for a certain period of time, a car buzzer (not shown) issues a ringing notification for a predetermined period of time (step S209).

It is determined whether or not the interlock switch 41 has returned to the on state within a certain time after the ringing is stopped in the step 209 (steps S210 to S211).
If it is determined in steps S210 to S211 that the interlock switch 41 has not returned to the ON state within the predetermined time, the process proceeds to step S220, the maintenance operation is canceled, and the process ends.
On the other hand, when the interlock switch 41 returns to the on state within the predetermined time in the steps S210 to S211, the car buzzer (not shown) indicates that the interlock switch 41 has returned to the on state within the predetermined time. Is sounded for a predetermined period (step S212).

  Next, the interlock switch 41 is turned off again with a dedicated tool (step S213), and it is determined whether or not the floor on which the interlock switch is turned off matches the floor stored in step S201 (step S214). If they do not match, the process proceeds to step S220, where the maintenance operation is canceled and the process ends (step S220).

  On the other hand, if it is determined in step S214 that the values match, the process proceeds to step S215, and the off period of the landing door interlock switch 41 turned off in step S214 is set so as not to erroneously detect the instantaneous turn-off of the interlock switch 41. It is determined whether or not it has been held for a certain period of time (step S215). If it is determined that it has not been held for a certain period of time, the process proceeds to step S220, the maintenance operation is canceled, and the process ends.

When it is determined that the determination in step S215 has been held for a certain period of time, a car buzzer (not shown) makes a ringing notification for a predetermined period of time (step S216).
In step 216, it is determined whether or not the interlock switch 41 has returned to the on state within a predetermined time after the notification of the sound of the car buzzer not shown in the above step 216 (steps S217 to S218). When it is determined that the state has not been returned, the process proceeds to step S220, the maintenance operation is canceled, and the process is terminated.

  On the other hand, when the interlock switch 41 returns to the ON state within a predetermined time in the steps S217 to S218, the predetermined position for maintenance and inspection, that is, the ceiling of the car and the floor of the stop floor in the step S201 are the same surface. When the maintenance inspection is at a predetermined position or when the stop floor is the lowest floor, the car 3 is moved to a predetermined maintenance inspection position sufficiently elevated for maintenance personnel to enter the pit, and maintenance operation is started. The operation ends (step S219).

It should be noted that a step may be included between step S218 and step S219 in which a car buzzer not shown in the figure notifies that the interlock switch 41 has been turned on within a predetermined time in step S218 for a predetermined period.
Furthermore, a step may be included in which a car buzzer (not shown) notifies that the interlock switch 41 has been turned off in step S206 for a predetermined period.

As described above, by further superimposing a predetermined on / off operation in the interlock switch 41, it is possible to further ensure the safety of the start of the maintenance operation.
In addition, when there is a condition such as execution of the on / off operation of the interlock switch 41 within a certain time or more than a certain time, when the condition is satisfied, the satisfaction of the condition is notified by voice or the like every time when the condition is satisfied, The execution of the on / off operation of the interlock switch 41 can be reliably confirmed.

Next, a maintenance operation ending operation, that is, an operation for returning the car after returning to the original position after entering the pit or riding on the car, will be described with reference to the flowchart of FIG.
It is determined whether or not the stop floor of the car 3 stored in step S101 of FIG. 3 or step S201 of FIG. 4 is the lowest floor (step S301). Proceeding to S302, whether or not the current position of the car 3 due to the movement of step S112 of FIG. 3 or step 212 of FIG. 4 is located between the lowest floor and the first floor above the lowest floor. Determination is made (step S302).

If it is determined in step S302 that the current position of the car 3 is not located between the two floors, the process proceeds to step S317 and returns to the start.
On the other hand, when it is determined in step S302 that the current position of the car 3 is located between the two floors, the interlock switch 41 is turned off with a dedicated tool (step S303).
In step S303, it is determined whether or not the floor to which the interlock switch 41 is output is the lowest floor (step S304). If it is determined that the floor is not the lowest floor, the process proceeds to step S317 to return to the start. .
When it is determined in step S304 that the floor is the lowest floor, the process proceeds to step S305, where it is determined whether the OFF period of the interlock switch 41 turned off in step S303 is maintained for a certain time or more, and is retained for a certain time or more. If it is determined that it is not, the process proceeds to step S317 to return to the start.

On the other hand, if it is determined in step S305 that the OFF period of the interlock switch 41 has been held for a predetermined time or more, a car buzzer (not shown) that notifies that the lock switch 41 has been held for a predetermined time or more is sounded for a predetermined period ( Step S306).
Next, it is determined whether or not the interlock switch 41 has been turned on within a certain time after the sound notification in step S306 (steps S307 to S308), and when it is determined that the switch has not returned to the on state within the certain time. Advances to step S317 to return to the start.
On the other hand, when it is determined in steps S307 to S308 that the vehicle has returned to the on state within a predetermined time, the vehicle moves to a predetermined position, that is, the stop floor position stored in step S101 in FIG. 3 or step S201 in FIG. Then, the operation is switched to the normal operation control and finished (step S309).

If it is determined in step S301 that the stop floor stored in step S101 of FIG. 3 or step S201 of FIG. 4 is not the lowest floor, the process proceeds to step S310, and the interlock switch 41 is turned off. (Step S310).
Next, in step S310, it is determined whether or not the floor on which the interlock switch 41 is output is the stop floor stored in step S101 of FIG. 3 or step S201 of FIG. 4 (step S311). When it is determined that the floor is not the stop floor stored in step S101 of FIG. 3 or step S201 of FIG. 4, the process proceeds to step S317 and returns to the start.

On the other hand, if it is determined in step S311 that the floor is the stop floor stored in step S101 of FIG. 3 or step S201 of FIG. 4, the process proceeds to step S312 and the interlock turned off in step S310. It is determined whether or not the OFF period of the switch 41 has been held for a certain period of time. If it is determined that the switch 41 has not been held for a certain period of time, the process proceeds to step S317 to return to the start.
On the other hand, when it is determined in step S312 that the off-period of the landing interlock switch 41 has been maintained for a predetermined time or longer, a car buzzer (not shown) notifies that the predetermined time has been maintained (step S31). S313).

Next, it is determined whether or not the interlock switch 41 has been turned on within a certain time after the sound notification in step S313 (steps S314 to S315), and when it is determined that the switch has not returned to the on state within a certain time. The process proceeds to step S317 and returns to the start.
On the other hand, when it returns to the ON state within a certain time in steps S314 to S315, it moves to a predetermined position, that is, the stop floor position stored in step S101 of FIG. 3 or step S201 of FIG. It switches to control and complete | finishes (step S316).

Next, the maintenance operation end operation with improved safety over the maintenance operation end operation shown in the flowchart of FIG. 5 will be described based on the flowcharts of FIGS. 6 and 7.
The main difference between the maintenance operation end operation shown in the flowchart of FIG. 5 and the maintenance operation end operation shown in the flowcharts of FIGS. 6 and 7 is that the predetermined ON / OFF operation in the interlock switch 41 is increased, This is the point of eliminating the chance of holding period due to instantaneous on / off.

It is determined whether or not the stop floor of the car 3 stored in step S101 of FIG. 3 or step S201 of FIG. 4 is the lowest floor (step S401). Proceeding to S402, whether or not the current position of the car 3 due to the movement of step S112 in FIG. 3 or step 212 in FIG. 4 is located between the lowest floor and the floor one floor above the lowest floor. Determination is made (step S402).
If it is determined in step S402 that the current position of the car 3 is not located between the two floors, the process proceeds to step S417 and returns to the start.

On the other hand, when it is determined in step S402 that the current position of the car 3 is located between the two floors, the interlock switch 41 is turned off with a dedicated tool (step S403).
In step S403, it is determined whether or not the floor to which the interlock switch 41 is output is the lowest floor (step S404). If it is determined that the floor is not the lowest floor, the process proceeds to step S417 to return to the start. .
When it is determined in step S404 that the floor is the lowest floor, the process proceeds to step S405, where it is determined whether the OFF period of the interlock switch 41 turned off in step S403 is maintained for a certain time or more, and is retained for a certain time or more. If it is determined that it is not, the process proceeds to step S417 to return to the start.

On the other hand, when it is determined in step S405 that the off-period of the landing interlock switch 41 has been held for a predetermined time or longer, a car buzzer (not shown) issues a ringing notification for a predetermined time (step S405). S406).
Next, it is determined whether or not the interlock switch 41 has been turned on within a certain time after the sound notification in step S406 (steps S407 to S408), and when it is determined that the switch has not returned to the on state within the certain time. Then, the process proceeds to step S417 to return to the start.
On the other hand, when the on-state of the landing interlock switch 41 is within the predetermined time in steps S407 to S408, a car buzzer (not shown) issues a ringing notification for a predetermined period (step S409).

Next, the interlock switch is turned off (step S410), and it is determined whether or not the floor to which the OFF is output is the lowest floor (step S411). If it is determined that the floor is not the lowest floor, the process goes to step S417. Proceed back to the start.
On the other hand, when it is determined in step S411 that the floor is the lowest floor, the process proceeds to step S412, where it is determined whether or not the OFF period of the interlock switch 41 turned off in step S410 is maintained for a predetermined time or more. If it is determined that it is not held, the process proceeds to step S417 to return to the start.
If it is determined in step S412 that the off-period of the landing interlock switch 41 has been maintained for a predetermined time or longer, a car buzzer (not shown) issues a ringing notification for a predetermined time (step S412). S413).

Next, it is determined whether or not the landing interlock switch 41 is turned on within a certain time after the sound notification in step S413 (steps S414 to S415), and when it is determined that the vehicle has not returned to the on state within the certain time. Advances to step S417 to return to the start.
On the other hand, when it is determined in steps S414 to S415 that the vehicle has returned to the ON state within a predetermined time, the vehicle moves to a predetermined position, that is, the stop floor position stored in step S101 in FIG. 3 or step S201 in FIG. Then, the operation is switched to the normal operation control and the process ends (step S416).

In step S401, when the stop floor of the car 3 stored in step S101 of FIG. 3 or step S201 of FIG. 4 is not the lowest floor, the interlock switch 41 is turned off (step S418).
Next, in step S418, it is determined whether or not the floor on which the interlock switch 41 is output is the stop floor stored in step S101 of FIG. 3 or step S201 of FIG. 4 (step S419). When it is determined that the floor is not the stop floor stored in step S101 of FIG. 3 or step S201 of FIG. 4, the process proceeds to step S432 and returns to the start.

On the other hand, when it is determined in step S419 that the floor is the stop floor stored in step S101 of FIG. 3 or step S201 of FIG. 4, the off period of the interlock switch 41 turned off in step S418. Is determined to be held for a predetermined time or more (step S420), and if it is determined that it has not been held for a predetermined time or longer, the process proceeds to step S432 to return to the start.
When it is determined in step S420 that the off-period of the landing interlock switch 41 has been maintained for a predetermined time or longer, a car buzzer (not shown) issues a ringing notification for a predetermined period of time (step S420). S421).
Next, it is determined whether or not the interlock switch 41 has been turned on within a certain time after the sound notification in step S421 (steps S422 to S423), and when it is determined that the interlock has not returned to the on state within a certain time. Then, the process proceeds to step S432 to return to the start.
On the other hand, when it is determined in steps S422 to S423 that the switch has been turned on within a predetermined time, a car buzzer (not shown) indicates that the interlock switch 41 has been turned on within a predetermined time. The ringing is notified for a predetermined period (step S424).

Next, the interlock switch 41 is turned off again (step S425), and it is determined whether or not the floor on which the off is output is the stop floor stored in step S101 of FIG. 3 or step S201 of FIG. If it is determined in step S426 that the floor is not the stop floor stored in step S101 of FIG. 3 or step S201 of FIG. 4, the process proceeds to step S432 and returns to the start.
On the other hand, if it is determined in step S426 that the floor is the stop floor stored in step S101 in FIG. 3 or step S201 in FIG. 4, the process proceeds to step S427, and the interlock turned off in step S425. It is determined whether or not the OFF period of the switch 41 has been held for a certain period of time. If it is determined that the switch 41 has not been held for a certain period of time, the process proceeds to step S432 to return to the start.

If it is determined in step S427 that the OFF period of the interlock switch 41 has been held for a predetermined time or longer, a car buzzer (not shown) issues a ringing notification for a predetermined period of time (step S428). ).
Next, it is determined whether or not the interlock switch 41 is turned on within a certain time after the sound notification in step S428 (steps S429 to S430), and when it is determined that the switch is not returned to the on state within a certain time. Then, the process proceeds to step S432 to return to the start.
On the other hand, when it is determined in steps S429 to S430 that the vehicle has returned to the on state within a predetermined time, the predetermined position, that is, the stop floor position stored in step S101 of FIG. 3 or step S201 of FIG. It moves, it switches to normal driving | operation and maintenance driving | operation completion | finish operation | movement is complete | finished (step S431).

  In the flowchart of the maintenance operation end operation in the above embodiment, branch steps other than a series of steps (steps S309, S316, S416, and S431) that move from the start to the stop floor position and switch to the normal operation and end are returned to the start. Although this is performed cyclically, it is also possible to trigger off detection of the interlock switch 41 as a trigger for starting. In that case, the step of turning off the interlock switch 41 (steps S303 and S403) moves to the start step.

In the above embodiment, the use of the operation history of the control device 2 is not particularly mentioned, but a predetermined on / off operation signal is received in the interlock switch 41 on the floor that matches the latest operation history during the maintenance operation. In some cases, conditions such as an off time longer than a predetermined time of the interlock switch 41 and a return to on within a predetermined time may be omitted.
Furthermore, as described above, when the step of turning off the interlock switch 41 (steps S303 and S403) is used as a start step, the moving control of the car to the floor where the interlock switch 41 is turned off with the above conditions omitted. You may go immediately.

In addition, between step S415 and step S416, between step S430 and step S431, a car buzzer (not shown) rings for a predetermined period that the interlock switch is turned on within a predetermined time in step S415 and step S430, respectively. A step of informing may be included.
Further, a step may be included in which a car buzzer (not shown) notifies that the interlock switch 41 in step S407 and step S422 is turned on for a predetermined period.

As described above, there is an effect that the safety at the end of the maintenance operation can be further secured by further superimposing a predetermined on / off operation in the interlock switch 41.
In addition, when there is a condition such as execution of the on / off operation of the interlock switch 41 within a certain time or more than a certain time, when the condition is satisfied, the satisfaction of the condition is notified by voice or the like every time when the condition is satisfied, There is an effect that the on / off operation of the interlock switch 41 can be reliably confirmed.

It is an elevator block diagram. It is the whole elevator block diagram by which group management is carried out. It is a flowchart of maintenance operation start operation. It is a flowchart of another maintenance driving | operation start operation | movement. It is a flowchart of maintenance operation end operation. It is a part of flowchart of another maintenance driving | operation completion | finish operation | movement. It is the remainder of the flowchart of another maintenance driving | operation completion | finish operation | movement.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Landing call button 1a, 1b, 1c Landing call button 2 Control apparatus 3 Car 4 Balance weight 5 Main rope 6 Drive sheave 7a, 7b, 7c Door zone detection body
8 Door zone detector 9 Encoder 10a Maintenance operation switch 10b Invalid switch 11 Car maintenance operation switch 12 Limit switch 20 Normal operation control means 21 Car position information means 22 Limit switch information means 23 Door zone information means 24 Operation switching information means 30 Maintenance operation control Means 31 Car height information means 32 Operation history storage means 33 Interlock switch operation judgment means 40 Landing door 41 Interlock switch

Claims (3)

Normal operation control means for normal operation of the group-managed elevator, maintenance operation control means for maintenance operation of the elevator, operation switching information means for switching the operation of the elevator to normal operation control means and maintenance operation control means, and door zone detection In an elevator control device comprising door zone information means for inputting detection information from a car and car position information means for inputting position information from a car position detector,
A position from the car position detector that the car is located on the floor from which the maintenance operation control means outputs the operation signal of the interlock switch provided on the landing door and the operation signal of the interlock switch. When the information and the door zone information from the door zone detector that the car is outside the door zone are received together, the floor surface of the floor where the interlock switch that outputs the operation signal is provided and the upper part of the car are the same surface elevator control device to control the movement of the elevator car in such a way that. 2. The elevator control according to claim 1, wherein when the operation signal output of the interlock switch is on the lowermost floor, the maintenance operation control means controls the movement of the car to a predetermined position for maintenance inspection above the lowermost floor. Equipment . The elevator control device according to claim 1 or 2, wherein the operation signal of the interlock switch is an on / off operation signal of a predetermined operation.

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