JP2016064920A - Elevator control device, method for the same and lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator control device, etc. that enables a car operation while an opening door of the elevator control device is opened when an elevator is set in a car operation possible state and in a maintenance inspection mode and that prevents the movement of a car while the opening door is opened in other cases.SOLUTION: A first light emitting section lit when a car operation is possible and a second light emitting section lit in a maintenance inspection mode are provided within a casing for storing a control section, and first and second light receiving sections for detecting light are arranged at positions opposing to the first and second light emitting sections of an opening door of the casing. Based on threshold values of light amounts for determining opening/closing of the opening door of the first and second light emitting sections, a car operation prohibiting signal is output in accordance with results of determining whether or not each of the light amounts of the first and second light emitting sections is the threshold value or larger from detection signals obtained by the first and second light receiving sections. When a state other than a first state where both of the first and second light receiving sections detect the threshold values or larger is transferred to a second state where the first and second light receiving sections detect values lower than the threshold values, the operation prohibiting signal is output.SELECTED DRAWING: Figure 2

Description

The present invention relates to an elevator control device, a method thereof, and a lock device, and more particularly to a control method at the time of maintenance inspection and opening / closing of a door of the lock device.

  Elevator maintenance and inspection work is done by workers entering the hoistway, opening the elevator control device installed near the pit in the lowermost end of the hoistway and opening the elevator status light indicator (light emitting element) inside the housing. Or, check the operation of the elevator while checking the liquid crystal display.

  As a conventional device of this type, for example, in Patent Document 1 below, when a lid of an inspection port is opened from the inside of a car at the time of maintenance / inspection work of equipment in a hoistway, the lifting operation of the car is locked. An elevator device provided with a safety switch is disclosed.

JP 2007-091430 A

  In the conventional technology as described above, if you want to move the car during maintenance and inspection work, the operation to temporarily disable the safety switch is performed. The switch remains disabled. Thereafter, when the elevator is operated without the worker noticing that the safety switch is in an invalid state, there is a possibility that a human accident occurs in which the elevator car and the lid of the inspection port come into contact. In addition, since the lid of the inspection port can be opened only during maintenance, the safety switch is operated less frequently. When the operation frequency is low, a film such as dust or dirt in the hoistway is generated on the contact surface of the switch, causing contact failure (false detection).

  The present invention has been made to solve the above-described problems. When the elevator is in a setting state in which the car can be operated and is in maintenance inspection work and in maintenance inspection mode, elevator control is performed. An object of the present invention is to provide an elevator control device or the like in which the car can be operated with the open door of the device open, and in other cases the car cannot be moved when the open door is open.

  The present invention is an elevator control device that is installed in a hoistway of an elevator and opens a door in the hoistway to perform maintenance and inspection, and is provided in a housing that stores a control unit that controls the elevator. The first and second light emitters are lit on the first light-emitting portion that is turned on when the vehicle is operable, the second light-emitting portion that is turned on in the maintenance and inspection mode, and the opening door that is opened and closed with respect to the housing. First and second light-receiving units that are provided at positions opposed to the light-emitting units and detect light from the light-emitting units opposed to each other, and the control unit opens the opening of the first and second light-emitting units. Based on the respective preset light intensity threshold values for determining whether the door is opened or closed, the light amounts of the first and second light emitting units are determined by the detection signals from the first and second light receiving units, respectively. The car according to the judgment result of whether or not the threshold value is exceeded An operation prohibition signal is output, and both the first and second light receiving units detect less than the threshold from a state other than the first state where both the first and second light receiving units detect the threshold value or more. It is in an elevator control device or the like that outputs the operation prohibition signal when transitioning to the second state.

  According to the present invention, the light emitting unit that lights up under a predetermined setting condition is provided in the casing of the control device, and the light receiving unit that receives the light of the light emitting unit is provided inside the opening door of the control device. An operation prohibition signal that is output when it is determined that the opening door has been opened, when the opening door is opened and the light receiving unit cannot receive light exceeding the threshold value from the light emitting unit. Is not output when the elevator is in a setting state in which the car can be operated and is in maintenance inspection work and in maintenance inspection mode. As a result, when the car can be operated and in maintenance and inspection mode, the car can be operated with the elevator control door open, and in other cases, the car can be operated with the door open. It is possible to prevent an elevator control device from moving, and to prevent the elevator control device from coming into contact with the car, thereby providing an elevator control device and the like with improved safety.

It is a figure which shows the inside of the elevator hoistway where the elevator control apparatus by Embodiment 1 of this invention was installed. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a state where an opening door of an elevator control device according to Embodiment 1 of the present invention is opened. It is a figure which shows the electrical connection structure of the part regarding this invention of the elevator control apparatus by Embodiment 1 of this invention. It is a control operation | movement flowchart of the control part in the elevator control apparatus by Embodiment 1 of this invention. It is a figure which shows the lighting state of the opposing light emission part detected by the light-receiving part in the elevator control apparatus by Embodiment 1 of this invention, and the open / closed open / closed door. It is a figure which shows the relationship of the lighting state of the light emission part which is detected by the light-receiving part in the elevator control apparatus by Embodiment 1 of this invention, and the door open / close operation possibility of an opening door. It is a perspective view of the state which opened the opening door of the locking device by Embodiment 2 of this invention. It is a figure which shows the electrical connection structure of the locking device by Embodiment 2 of this invention.

  Hereinafter, an elevator control device and the like according to the present invention will be described with reference to the drawings according to each embodiment. In each embodiment, the same or corresponding parts are denoted by the same reference numerals, and redundant description is omitted.

Embodiment 1 FIG.
FIG. 1 is a view showing the inside of an elevator hoistway in which an elevator control apparatus according to an embodiment of the present invention is installed. In FIG. 1, an elevator car 3 is moved up and down in a hoistway 4 by a drive mechanism (not shown) including, for example, a rope and a hoisting machine. At the time of maintenance and inspection work, the worker 1 gets down to the pit 5 at the lower end of the hoistway 4 and opens the opening door 2b opened inside the pit 5 of the elevator control device 2 installed in the pit 5 to perform the work.

  The elevator controller 2 controls the operation of moving the car 3 up and down in the hoistway 4 by the above-described drive mechanism according to the car call from the car 3 and the hall call at each floor, and the door of the car 3 (not shown). Open / close control is performed. Normally, when the opening door 2b of the elevator control device 2 is opened intentionally or due to a device failure, an operation prohibition signal is output.

  The elevator control device 2 according to the present invention stops the output of the operation prohibition signal only when the car operation is set and the elevator is in the maintenance / inspection mode, and the door 2b of the elevator control device 2 is opened. Car operation can be performed with the door open, and other car operation prohibition settings and normal operation, etc., prohibit car operation with the door open with an operation prohibition signal.

As a result, the car 3 can be operated with the opening door 2b opened during maintenance inspection work, but the car 3 does not move when the opening door 2b is opened except during maintenance inspection work. The opening door 2b and the car 3 can be prevented from coming into contact with each other, leading to an improvement in safety.
In addition, a conventional safety switch is not required.

FIG. 2 is a perspective view of the elevator control device 2 according to Embodiment 1 of the present invention with the opening door 2b opened. On the housing 2a side of the control device 2, a control unit 9 made of, for example, a microcomputer for performing the above-described control of the car 3, and on the hinge (not shown) side in the housing 2a, a first light emitting unit 7a, an opening unit The second light emitting unit 8a is disposed on the side. On the side of the opening door 2b, first and second light receiving portions 7b and 8b are arranged to face the light emitting portions 7a and 8a, respectively. The first light-emitting unit 7a is lit during the period in which the car 3 can be operated, and the second light-emitting unit 8a is lit during the maintenance / inspection mode.
The control unit 9 registers and sets the light emitting element light amount from the light emitting units 7a and 8a in the light receiving units 7b and 8b in a memory (not shown) at a predetermined interval in an initial state, and sets the light emitting element By determining whether to turn on or off using the light amount as a reference, that is, a threshold value, it is possible to prevent erroneous detection due to aged deterioration of the light amount.
In the following, in order to simplify the description, it is determined that the light emitting element light amount from the light emitting units 7a and 8a detected by the light receiving units 7b and 8b is “lighted” when the light amount is greater than or equal to the threshold value, and “light off” when the light amount is less than the threshold value Give an explanation. Here, “lighting” means a state in which the light emitting units 7a and 8a are lit while the open door 2b is closed and the light emitting units 7a and 8a and the light receiving units 7b and 8b are close to each other. The “light off” does not mean that the light emitting units 7a and 8a are actually turned off, and the light quantity of the light emitting elements from the light emitting units 7a and 8a detected by the light receiving units 7b and 8b including the actual light off is the opening door 2b. Means that the distance between the light emitting units 7a and 8a and the light receiving units 7b and 8b is increased, and the detected light amount is reduced to be less than the threshold value.
That is, the first light emitting unit 7a is lit when the car is operable, and the second light emitting unit 8a is lit when in the maintenance / inspection mode. The first light receiving unit 7b detects light from the first light emitting unit 7a, and the second light receiving unit 8b detects light from the second light emitting unit 8a.
The control unit 9 determines the first and second light receiving units 7b based on respective preset light intensity thresholds for determining whether the first and second light emitting units 7a and 8a are opened and closed. , 8b, a car operation prohibition signal is output according to a determination result of whether or not the light amounts of the first and second light emitting units 7a, 8a are equal to or greater than the respective threshold values, and the first and second light receiving units When a state other than the first state in which both 7b and 8b detect a threshold value or more transitions to a second state in which both the first and second light receiving portions 7b and 8b detect less than the threshold value, an operation prohibition signal is issued. Output. This is the same throughout the description of the first embodiment.
This threshold value is the amount of light received by the light receiving unit of the light emitting unit when the open door 2b is closed, or the amount of light obtained by multiplying this amount of light by a coefficient smaller than 1, as described above, for example, in a predetermined cycle in the memory. It is updated and registered with.

  FIG. 3 is a diagram showing an electrical connection configuration of a portion related to the present invention of the control unit 9 in the elevator control device 2.

FIG. 4 is a control operation flowchart of the control unit 9 of FIG. The control operation in the control unit 9 will be described with reference to FIGS. 3 and 4. When the control unit 9 is in a setting state in which the car can be operated in elevator control while the open door 2b of the control device 2 is closed, the light emitting unit 7a is turned on. Light up. Further, when the maintenance / inspection mode is set during maintenance / inspection work by an external input instruction or the like from the operator to the control device 2 in the control unit 9, the light-emitting unit 8a is turned on.
The setting in the maintenance / inspection mode is, for example, input and set by the worker using an input device provided outside the control device 2 or a portable terminal carried by the worker (both not shown). On the other hand, the setting state in which the car can be operated is set according to schedule management time-managed by program control or the like by the control device 2. Therefore, even if the operator forgets to cancel the maintenance inspection mode setting after maintenance work, the setting state in which the car can be operated is canceled at the preset time according to the schedule management. Troubles caused by forgetting do not occur.
Note that the maintenance / inspection mode may also be set according to schedule management that is time-managed by program control by the control device 2 or the like. Further, only the end setting of the maintenance / inspection mode may be set according to the schedule management by the control device 2.

In step S1, the light receiving unit 7b provided oppositely detects light emission, that is, lighting of the light emitting unit 7a that is lit for the period during which the car can be operated. In step S2, the light receiving unit 8b provided oppositely detects the lighting of the light emitting unit 8a that is lit during the maintenance / inspection mode. The detection results of the light receiving units 7b and 8b are input to the control unit 9 as detection signals.
In step S3, if both the light-receiving parts 7b and 8b detect lighting, it will be in a 1st state and will be in a maintenance check operation possible mode.

  FIG. 5 shows the relationship between the lighting state of the opposing light emitting portions 7a and 8a detected by the light receiving portions 7b and 8b and whether or not the opening door 2b can be opened. Only when the light-receiving units 7b and 8b detect the lighting of both the light-emitting units 7a and 8a shown at the right end of FIG. 5, the car can be operated in the first state, that is, in the maintenance and inspection.

If the light receiving unit 8b is not detected in step S1, the control unit 9 outputs the operation prohibition signal P to the drive mechanism 11 in step S9, and the car operation is prohibited. It becomes.
If the light receiving unit 8b is not detected in step S2, it is in the car operation enabled setting state but is not in maintenance and inspection work. Therefore, in step S7, the automatic operation mode, that is, the normal operation mode is set. In the automatic operation mode, the lighting detection state of the light receiving unit 7b is determined in step S8. If lighting is detected, the process returns to step S2 while continuing the automatic operation mode, and the lighting detection state of the light receiving unit 8b is determined. If the lighting is not detected in step S8, it is determined that the car operation enabled setting state has been released, and the car operation prohibited state is entered in step S9.

  If the car is ready for maintenance in step S3, then the opening door 2b is opened by, for example, the worker 1, so that the light receiving unit 8b turns on the light emitting unit 8a in step S4. Not detected, that is, a light-off state is detected, and even in step S5, the light-receiving unit 7b detects the light-off state of the light-emitting unit 7a. This is the second state, and maintenance inspection is performed with the open door 2b opened. It becomes the door open maintenance inspection operation possible mode that can operate the car. In this case, the operation prohibition signal P is not output to the drive mechanism 11 even when the opening door 2b is opened.

  FIG. 6 shows the relationship between the lighting state of the opposing light emitting portions 7a and 8a detected by the light receiving portions 7b and 8b and whether the door 2b can be opened. Only when both light-receiving portions 7b and 8b shown at the right end of FIG. 6 detect the turn-off, the second state, that is, the door open maintenance inspection operable mode is entered.

  Although not clearly shown in the flowchart of FIG. 4, the control unit 9 always monitors the state in which the light receiving units 7b and 8b such as steps S4, S5, and S6 of FIG. In a state other than the maintenance / inspection operation possible mode that is the first state of step S3 that satisfies the conditions of S1 and S2, that is, in the state of steps S1, S2, S7, S8, etc., both the light receiving sections 7b and 8b detect the light extinction. When the state is changed to the above state, it is determined that the opening door 2b of the control device 2 is opened, and the operation prohibition signal P is output to the drive mechanism 11.

  As shown in FIG. 2, when the opening door 2 b of the elevator control device 2 is opened, the second light receiving unit 8 b is first in a lighting non-detection state, and then the first light receiving unit 7 b is in a lighting non-detection state. Become. Even when the non-detection order is different, the controller 9 may determine that an abnormality has occurred and output an operation prohibition signal. The light emitting unit and the light receiving unit are arranged in such a manner that the first light emitting unit 7a and the light receiving unit 7b for setting the car operable are set to the open side of the control device 2, and the second light emitting unit 8a and the light receiving unit 8b for the maintenance / inspection mode. May be placed on the hinge side and is not limited.

  As described above, according to the elevator control device having the light emitting part and the light receiving part for the car operation ready setting state and the maintenance / inspection mode, the door of the control device is only in the elevator operation / inspection work in the car operation ready setting state. Car operation can be performed in an open state, and car operation can be prohibited in other cases, preventing human work mistakes during maintenance and inspection work, and preventing accidents where the doors of the car and the control device come into contact. Can lead to improved safety.

  2 and 3, a lock mechanism 10 that locks and unlocks the control device 2 under the control of the control unit 9 is provided in the control device 2 as indicated by a broken line, and is normally locked. In addition, the lock mechanism 10 may be configured to be unlocked when the maintenance / inspection operation possible mode, which is the first state in step S3 of FIG. Thereby, the contact accident of the opening door 2b of the car control apparatus 2 can be prevented more reliably.

In addition, as shown by the broken lines in FIG. 3, the individual car operation possible period for each elevator, the restrictions on the maintenance inspection period, the state of each part of the elevator, information on failure and disaster, etc. One or more auxiliary light emitting portions Aa, Ba that are turned on or off with respect to the conditions are further provided on the housing 2a side, and the opening door 2b is 1 at a position facing one or more auxiliary light emitting portions Aa, Ba, respectively. One or more auxiliary light receiving parts Ab, Bb are further provided. Then, the control unit 9 is in a state other than the first state in which it is determined that all of the one or more auxiliary light receiving units Ab and Bb detect lighting in addition to the first and second light receiving units 7b and 8b. To the second state in which it is determined that all of the first and second light receiving units 7b and 8b and the one or more auxiliary light receiving units Ab and Bb are detected to be turned off. May be output.
As a result, the car operation in the maintenance inspection becomes possible only when the opening door 2b is opened only when more detailed conditions are satisfied, and the maintenance work can be performed safely in a more optimal state.
In more detail, in this case, the control unit 9 is further based on a preset light amount threshold value for determining whether the one or more auxiliary light-emitting units Aa and Ba open / close the opening door 2b. Thus, based on detection signals from one or more auxiliary light receiving parts Ab and Bb, it is determined whether or not one or more auxiliary light emitting parts Aa and Ba are equal to or greater than their respective threshold values.
The first and second light receiving units 7b and 8b and the one or more auxiliary light receiving units Ab and Bb are in states other than the first state in which all of the first or second auxiliary light receiving units Ab and Bb have detected a threshold value or more. When all of 7b and 8b and one or a plurality of auxiliary light-receiving units Ab and Bb transition to the second state in which a value less than the threshold is detected, an operation prohibition signal is output.

Embodiment 2. FIG.
In addition, although the elevator control apparatus was demonstrated in the said embodiment, it is possible to form a locking device by the structure which controls opening and closing of the opening door which consists of the said light emission part and a light-receiving part. FIG. 7 is a perspective view showing a state in which an opening door of an object to be locked to which a lock device according to Embodiment 2 of the present invention is attached, and FIG. 8 shows an electrical connection configuration of the lock device. In addition, the part which has a function corresponding to the thing of the said Embodiment 1 is shown with the same code | symbol.

A lock mechanism 10 that locks the opening door 2b with respect to the housing 2a with respect to the locking object including the housing 2a and the opening door 2b that is opened and closed with respect to the housing 2a. A control unit 9 that performs control is provided.
One or a plurality of light emitting portions 7a and 8a that are turned on when a predetermined condition relating to unlocking (unlocking) of the lock mechanism 10 is established on the housing 2a side, One or a plurality of light receiving portions 7b and 8b for detecting lighting provided respectively at positions facing the plurality of light emitting portions 7a and 8a are installed.

The control unit 9 determines the presence / absence of each lighting detection based on the light reception signals from the one or more light receiving units 7b and 8b, and determines that all the one or more light receiving units 7b and 8b have detected lighting. Sometimes, the lock mechanism 10 outputs a lock release signal UL for releasing the lock.
More specifically, the control unit 9 includes one or more light receiving units 7b, 7a, 8a based on respective preset light intensity threshold values for determining lighting of the one or more light emitting units 7a, 8a. When it is determined by the light reception signal from 8b that the light emission of one or the plurality of light emitting units 7a, 8a is all equal to or greater than the threshold value, an unlock signal UL for unlocking the lock mechanism 10 is output.

  As a result, it is possible to provide a highly reliable locking device that can unlock the lock mechanism 10 and open the opening door 2b only when all preset conditions are satisfied.

  In addition, the control part 9 and the lock mechanism 10 may be set to either the housing | casing 2a side and the opening door 2b side, and may be installed ranging over both.

  In each embodiment of the present invention, the detection of lighting is based on the light emitting element light amounts of the light emitting units 7a and 8a, which are measured in advance or periodically by the control unit 9 and registered in a memory or the like (not shown). This is done by comparison with a threshold value (the same applies hereinafter). Therefore, if the light-emitting element light amount of the light-emitting portion, and consequently the threshold value for determining whether the light-emitting portion is turned on, is set larger than the light amount of the background, it can be applied even in a bright place.

  DESCRIPTION OF SYMBOLS 1 Worker, 2 Elevator control apparatus, 2a housing | casing, 2b Open door, 3 cage | basket, 4 hoistway, 5 pits, 7a, 8a Light emission part, 7b, 8b Light reception part, 9 Control part, 10 Lock mechanism, 11 Drive mechanism , Aa, Ba Auxiliary light emitting part, Ab, Bb Auxiliary light receiving part.

Claims (6)

An elevator control device that is installed in an elevator hoistway and performs maintenance and inspection by opening an open door in the hoistway,
A first light-emitting unit that is provided in a housing that stores a control unit that controls the elevator, and that is turned on when the car is operable; a second light-emitting unit that is turned on when in the maintenance and inspection mode;
First and second light receiving portions that are provided at positions facing the first and second light emitting portions, respectively, on the opening door that is opened and closed with respect to the housing, and detect light from the facing light emitting portions; ,
With
Based on the preset light intensity threshold values for determining whether the first and second light emitting units open and close the opening doors of the first and second light emitting units, the control unit receives light from the first and second light receiving units. According to the detection signal, the operation prohibition signal of the car is output according to the determination result of whether or not the light amounts of the first and second light emitting units are equal to or greater than the threshold values,
Transition from a state other than the first state in which both the first and second light receiving units have detected the threshold value or more to a second state in which both the first and second light receiving units have detected less than the threshold value An elevator control device that sometimes outputs the operation prohibition signal. A lock mechanism for locking the opening door with respect to the housing;
The elevator control device according to claim 1, wherein the control unit releases the lock of the lock mechanism when determining the first state. One or a plurality of auxiliary light-emitting units provided in the housing and lit or extinguished according to further different conditions relating to maintenance inspection or car operation,
One or a plurality of auxiliary light-receiving units that detect light from the auxiliary light-emitting units that are respectively provided at positions facing the one or more auxiliary light-emitting units of the opening door;
With
From the one or more auxiliary light receiving units, the control unit is further configured based on a preset light intensity threshold value for determining whether the one or more auxiliary light emitting units are opened or closed. From the detection signal, it is determined whether the one or more auxiliary light emitting units are greater than or equal to the threshold value,
From the states other than the first state where all of the first and second light receiving units and the one or more auxiliary light receiving units detect the threshold value or more, the first and second light receiving units and the one The elevator control device according to claim 1 or 2, wherein the operation prohibition signal is output when transition to the second state in which all of the plurality of auxiliary light receiving units detect less than the threshold value.   The elevator control device according to any one of claims 1 to 3, wherein the opening door is opened toward an inner side of the hoistway. In the elevator control device that is installed in the elevator hoistway and performs maintenance inspection by opening the door in the hoistway,
A first light-emitting unit that is turned on when the car is operable and a second light-emitting unit that is turned on when the car is operable are provided in a housing that stores a control unit that controls the elevator. A first and a second light receiving part for detecting light from the light emitting part facing the first light emitting part and the position facing the first light emitting part,
Based on the light-receiving signals from the first and second light-receiving units, based on respective preset light intensity threshold values for determining whether the first and second light-emitting units open and close the opening door, The first and second light-receiving units detect whether or not the light amounts of the first and second light emitting units are equal to or greater than the respective threshold values, prohibit the operation of the car, and both the first and second light receiving units detect the threshold value or greater. An elevator control method for prohibiting operation when a state other than a state transitions to a second state in which both the first and second light receiving units detect less than the threshold. One or a plurality of light emitting units that are provided in the case of the lock target and that are turned on when preset conditions relating to unlocking are established;
One or a plurality of light-receiving units that are provided at positions facing the one or a plurality of light-emitting units on the opening door that is opened and closed with respect to the housing, and detect lighting of the opposing light-emitting units;
A locking mechanism that locks the opening door with respect to the housing;
A control unit for controlling the locking mechanism;
With
When the control unit determines the presence / absence of detection of each lighting with a reception signal from the one or more receiving units, and determines that all of the one or more light receiving units have detected lighting, A locking device that unlocks the locking mechanism.

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