JPH05306085A - Door opening/closing inspection device for elevator - Google Patents

Abstract

PURPOSE:To provide the door opening/closing inspection device for an elevator which can easily detect the cause of the anomaly of a cage door and an elevator hall door. CONSTITUTION:The operation control for a cage 1 is executed by an operation controller 2, and the inspection for the opening/closing of the door of the cage 1 and an elevator hall door is carried out by an inspection device 3. The inspection device 3 receives a door opening instruction signal ZOPEN, door closing instruction signal ZCLOSE, signal of a car door switch GS, signal of a perfect closure detection switch CLS, signal of a perfect opening detection switch OLS, and the signal of an elevator hall door lock switch DS at each opening and closing of the door, and measures the operation time by an operation time measuring circuit 31, and each value is compared with the value stored in an initial value memorizing circuit 33 by a comparison judgement circuit 34, and the correctness of the opening/closing of the door is judged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator door opening / closing inspection device for inspecting an elevator door.

[0002]

2. Description of the Related Art Generally, an elevator landing door has a car door engaging device that engages with an engaging roller of the landing door when a car stops at a floor level, and is installed along a sill groove formed by an opening / closing device. , Is configured to be opened and closed. Such a configuration will be described with reference to the drawings.

FIG. 4 is a conceptual view showing the state of the door of the elevator car seen from the landing side, and FIG. 5 is a perspective view of the vicinity of the engagement device shown in FIG. In FIGS. 4 and 5, 50 is a car, 51 is a car door, 52 is a hanger that suspends the car door, and 53 is a hanger 5.
A door rail that guides the door 2, 54 is a door motor that drives the door, 55 is a pulley for transmitting the driving force of the door motor to the door, 56 is a door drive rope, and 57 is a metal fitting that fixes the door drive rope 56 and the hanger 52.

CLS is a fully open detection switch for detecting that the door is substantially fully opened, OLS is a fully closed detection switch for detecting that the door is substantially fully closed, and GS is a car door up to a predetermined position. It is a car door switch that detects when it is fully closed. 58 is attached to the hanger 52 and is provided with a fully closed detection switch CLS and a fully opened detection switch O.
A first cam that operates the LS, and 59 is a second cam that also operates the car door switch GS. Reference numeral 60 is an engagement device for transmitting the driving force of the car door 51 to the car door, and 61 is a door-stop rubber fixed to the closed end CE of the car 50 and contacting the car door 51 when fully closed. Reference numeral 62 denotes a car sill that guides the lower portion of the door 51 of the car, and 63 is a door shoe that is attached to the lower end of the door 51 of the car and moves along the groove of the car sill 62. OE indicates the open end of the door 51 of the car.

Next, the landing door will be described. Figure 6
FIG. 7 is a conceptual diagram showing a fully closed state of an elevator hall door viewed from the car side, and FIG. 7 is a detailed diagram of a door lock portion shown in FIG. In FIG. 6 and FIG. 7, 70 is a landing door, 7
1 is a three-sided frame of the landing door 70, 72 is a landing door 7
0 is a hanger, 73 is a door rail, and 74 is a closer spring that gives a self-closing force to the landing door 70. 75 is a door lock device, 75R is a roller attached to the door lock device 75, 77 is a hook rotatably attached to the door lock device 75 about the fulcrum A, and 76 is a hook 77.
, 78 is a movable contact attached to the tip of the hook 77, DS is a landing door lock switch fixed to the door rail, 79, 8
Reference numeral 0 is a contact with the lock seat of the landing door lock switch DS, 81 is a landing sill, 82 is a door shoe of the landing door 70, and 83 is a door-stop rubber attached to the closed end of the three-way frame 71.

Next, the opening / closing operation of the elevator doors shown in FIGS. 4 to 7 will be described. First, the operation when the door is opened will be described. Cage door 51 and platform door 7
When 0 is in the fully closed state, when the door motor 54 rotates in the door opening direction by the door opening command, the driving force is transmitted via the pulley 55, the driving rope 56, and the door hanger 52, and the car door 51 Moves in the direction of the open end OE, and during this movement, the fully closed detection switch CLS is turned off at the time of opening 3 mm from the closed end, and the car door switch GS is turned off at the time of opening 10 mm from the closed end. In the vicinity of the off position of the car door switch GS, the car engagement device 60 contacts the movable side engagement roller 76 of the door lock device 75 of the landing door 70, and the car door 51 is further moved toward the open end OE. When moved, the movable side engagement roller 76 is pushed by the engagement device 60, and the hook 77 of the landing door 70 is lifted up, the landing door lock switch DS is turned off, and the hook 77 is released.
Rises above the lock seat 79, and the landing door 70 is unlocked.

When the door 51 of the car moves in the direction of the open end OE, the engagement device 60 pushes the roller 75R via the movable side engagement roller 76, which also moves the landing door 70 to move the car. At the position 10 mm before the open end OE of the door 51, the fully open detection switch O of the car 50 is opened.
The LS is turned on, whereby the door open command signal is turned off, and the door 51 of the car is opened to the open end OE by inertia and stopped.

Next, the operation when the door is closed will be described.
When the door 51 of the car is in the fully open state, the door 70 at the landing is pulled toward the closed end by the force of the closer spring 74. At this time, since the movable side engagement roller 76 of the door lock device 75 of the landing door 70 contacts the engagement device 60 of the car door, the hook 77 is lifted up. When the door motor 54 is driven by the door close command from the elevator operation control device in the fully open state, the car door 51 moves in the closing end direction CE, and the full open detection switch OLS is turned off immediately after the closing starts, and thereafter, When the vehicle approaches the closed end CE, the landing door 70 first hits the door-stop rubber 83, and the movement is stopped. Further, when the door 51 of the car is closed, there is a gap between the engaging device 60 and the engaging roller 76, and the hook 77 is lowered, so that the lock seat 79 and the hook 77 of the landing door lock switch DS are positioned as shown in FIG. As a result, the lock is applied and the hall door lock switch DS is turned on. After that, when the door 51 of the car is further closed, the car door switch GS is turned on 10 mm before the closing end CE, the fully closed detection switch CLS is turned on 3 mm before the closing end CE, and the door closing command signal is turned off. At the same time, the door 51 of the car hits the door stop rubber 61 at the closed end CE of the car, the movement of the door 51 of the car is stopped, and the door closing operation is completed.

The elevator door structure and its opening / closing operation have been described above. Due to the structure and opening / closing operation as described above, loosening of bolts that attach each component, wear of the opening / closing device due to long-term use, increase in door running resistance due to change in contact state between sill groove and door shoe, Foreign matter may enter the sill groove and dust may accumulate on the upper part of the door rail, which may cause inconvenience in opening and closing the door.

The door 51 of the car and the door 7 of the landing
In the structure of No. 0, if inconvenience occurs in opening and closing the door, not only a great inconvenience to passengers but also a risk of personal injury may occur. Therefore, the door open / close inspection is an important inspection item.

Conventionally known elevator door abnormality detecting devices are disclosed, for example, in Japanese Utility Model Laid-Open No. 62-176171. This device measures an opening time and a closing time of an elevator door, compares the measured time with a preset reference time, and when the measurement time is longer than the reference time, the measurement time and the measurement floor. The floor is output to report anomalies, which saves the elevator technician the trouble of measuring the door opening and closing times.

[0012]

However, since the conventional elevator door abnormality detecting device according to the above disclosure only looks at the time of opening and closing the door, even if the presence or absence of the abnormality of the door can be detected, the cause of the abnormality is as follows. However, there was a problem in that it would be difficult to find out without checking each part of the car doors and the landing doors, and it takes a lot of time and labor for the checking.

Further, the change of the car door switch closing position due to the displacement of the car door switch body due to the loosening of the mounting bolt of the bracket for fixing the car door switch of the car, and the change of the door lock position of the landing side door There is a problem in that it is not possible to detect an abnormality that is due to a position shift of the door lock device due to loosening of the mounting bolt, etc. Further, there is a problem that it is not possible to detect a state where the door is not completely closed, a state where the door is not completely opened, etc. due to dust clogging in the sill groove and dust accumulated on the upper portion of the door rail.

An object of the present invention is to solve the above-mentioned problems in the prior art and to provide an elevator door opening / closing inspection apparatus capable of easily finding the cause of abnormality of a car door and a landing door.

[0015]

To achieve the above object, the present invention detects a car door that is opened by a door open command signal and closed by a door close command signal, and a substantially fully closed position of the car door. A first switch, a second switch for detecting a closed position of the car door at a predetermined minute distance from the fully closed position, a landing door that opens and closes in conjunction with the car door, and a landing door of the landing door. In an elevator equipped with a third switch for detecting the presence or absence of lock, a reading means for reading each operation time of the first switch, the second switch and the third switch, and a reading means for reading by the reading means. Comparing means for comparing each of the specified operating times with the specified operating time, and judging means for judging whether the door is opened or closed based on the result obtained by the comparing means. Characterized in that was.

[0016]

The open / closed states of the first switch, the second switch and the third switch are fetched and stored in the elevator controller. The inspection device has an operating time from a predetermined reference time point (for example, a car door opening command signal output time) of each switch and an operating time up to a predetermined reference time point (for example, a car door closing command signal output time) of each switch. One or both of these are compared to a defined activation time.
The result of this comparison is the difference in the operating time of each switch with respect to the defined operating time. Based on each of these differences, the operation of each switch itself and the quality of the mounting position are determined, and based on the combination of the above differences, the presence or absence of an abnormality and its cause are determined.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to illustrated embodiments. FIG. 1 is a block diagram of an elevator door opening / closing inspection apparatus according to an embodiment of the present invention. In FIG. 1, 1 is an elevator car, GS is a car door switch for the door of the car 1, CLS is a fully closed detection switch, OLS is a fully open detection switch, and DS is a landing door lock switch for a landing door. This is the same as that shown in FIGS. 2 is an operation control device, 21 is an input interface for inputting signals of each switch, 22 is a floor signal generation unit, 23 is a door opening command signal generation unit, 24 is a door closing command signal generation unit, and 25 is operation control. It is a communication interface for transmitting each signal in the device 2.

3 is an elevator door opening / closing inspection apparatus according to the present embodiment, 31 is an operation time measuring circuit, 32 is a first memory circuit, 33 is an initial value memory circuit, 34 is a comparison / determination circuit, and 35 is a second circuit. Memory circuit. Reference numeral 4 is a terminal device, and 5 is a display device.

The operation control device 2 controls normal operations such as running and stopping of the elevator car 1 and opening and closing of doors, and also opens and closes the command signal ZOPEN, when the door of the car 1 is opened and closed. ZCLOSE, floor signal FL indicating which floor you are on, and signal of the landing door lock switch DS that turns on when the landing door is closed and locked, and on when the door of the car is closed to a predetermined position (10 not before the closed end
Signal of car door switch GS, which turns on at the position of mm)
The signal of the fully-closed detection switch CLS that turns on when the door of the car is substantially closed (not turned on at the position of 3 mm before the closing end, which is not the case in the above example), and the door of the car is not fully opened. When you turn on (eg 5 before the open end)
The signal of the full-open detection switch OLS, which is turned on in mm, is output.

The operation time measuring circuit 31 of the door opening / closing checking device 3 measures the operation time between predetermined signals among the above-mentioned operation signals, and the measurement result is stored in the first storage circuit 32.
Remember. The initial value storage circuit 33 stores the measurement result of the operating time at the initial stage of installing the elevator as an initial value. The comparison / determination circuit 34 is configured to detect the above-mentioned operation times when the elevator door is opened / closed and the initial value storage circuit 3
The initial value stored in No. 3 is compared to determine whether the door is open or closed. The determination result is stored in the second storage circuit 35.

Next, the operation of this embodiment will be described with reference to the time charts of the signals shown in FIGS.
2 and 3, CET indicates the time when the car 1 is at the closed end CE position, and OET indicates the time when the car 1 is at the open end OE position. The car 1 travels under the control of the operation control device 2,
Perform necessary operations as elevator equipment, such as stopping and opening and closing doors. In this embodiment, during the door opening operation, as shown in the time chart of the door opening operation shown in FIG. 2, after the door opening command signal ZOPEN is turned on, the fully closed detection signal X is detected.
Opening time a0 until CLS turns off, car door switch signal XG after full close detection signal XCLS turns off
Time a2 until S is turned off, time a3 from when the fully closed detection signal XCLS is turned off to when the hall door switch signal XDS is turned off, and fully open detection signal XOLS is turned on after the fully closed detection signal XCLS is turned off. Up to almost the entire door opening operation time a1 is measured.

Further, during the door closing operation, as shown in the time chart of the door closing operation shown in FIG. 3, the full-open detection command signal XOL is output after the door closing command signal ZCLOSE is turned on.
Closed start time b0 until S is turned off, almost the entire door closing operation time b1 from when the full-open detection signal XOLS is turned off to when the full-closed detection signal XCLS is turned on, after the car door switch signal XGS is turned on Full close detection signal XCLS
B2 until the switch turns on, and the fully closed detection signal XCLS after the hall door lock switch signal XDS turns on
The time b3 until the switch turns on is measured.

Before the door is monitored for abnormalities by the apparatus, first, the initial value is set. To set the initial value, the door is opened and closed once for each floor, and the predetermined time a0, a1, a2, a3, b0, b of each operation signal at that time is set.
1, b2, b3 are measured for each floor. Then, the measured time is set as an initial value for each floor as an initial value storage circuit 33.
To store. The opening and closing of the door for measuring the initial value may be performed only once for each floor, but it is more desirable to use the average value of opening and closing a plurality of times, for example, 10 times, as the initial value because the determination accuracy will be higher later. The reason why the above-mentioned initial value is adopted as the reference value is that the door opening / closing time required differs depending on the installation site of each elevator and that the best value after the inspection is used as the reference value. The reason why the initial value is set for each floor is that the specifications of the door of the landing may differ depending on the floor.

When the initial value is set as described above and the door abnormality is constantly detected, the operation time measuring circuit 31 causes the time a between the operation signals to be changed every time the door is opened or closed.
0 to a3, b0 to b3 are measured and stored in the first storage circuit 32. The comparison / determination circuit 34 compares and determines each measured value stored in the first storage circuit 32 with each corresponding initial value on the floor, and creates an abnormality detection code in the case of abnormality.

The inspection items carried out by the comparison / determination circuit 34 are: increase in running resistance of the landing door, increase in running resistance of the car door, change in the closing position of the car door switch GS, change in closing position of the landing door lock switch DS, full closure. Possibility of changes in the closing position of the detection switch CLS, changes in the closing position of the full-open detection switch OLS, dust clogging near the closed end of the car, dust clogging near the open end of the car, and abnormalities near the closed end of the landing door Is.

Next, a method of comparing and judging these inspection items will be described. Judgment of “Increase in running resistance of landing door” If the landing door 70 is twisted, the door shoe 82 and the groove of the sill 81 at the landing are strongly contacted with each other, the running resistance becomes heavy due to the friction resistance, and the door opening operation is performed. Time,
The landing door lock switch DS of the landing door 70 is turned off, and is affected by the running resistance of the landing door 70 from the time when the car door 51 and the landing door 70 are engaged,
The door opens slower than usual.

During the closing operation, the door 70 at the landing is closed together with the door 51 of the car up to the closed end by the driving force of the door motor 54 of the car 50.
At the closed end, the engagement device 60 and the movable side engagement roller 76 separate from each other, and the force of the closer spring 74 tries to close them. However, when the running resistance of the landing door 70 increases due to the tightness of the bearings of the rollers of the hanger 72 of the landing door 70 and the wear of the door shoe 82, the speed of the door 70 of the landing is drastically reduced before the closing end due to the influence. However, it takes a long time until the hall door lock switch DS turns on, and in the worst case, it may not be possible to turn on the door lock switch DS. In this case, the running resistance of the landing door is affected only when the landing door and the car door are engaged, not in the entire opening and closing of the car door. Therefore, a3 and b are the times when the landing door and the car door are not engaged.
The time of 3 does not change.

Therefore, the method for judging the possibility that the running resistance of the landing door on a certain floor has increased is such that the door opening / closing times a1 and b1 in the entire area are both initial values (about 3 to 4 seconds) increases by a certain value (10% or more), and the time a3, b3 is the initial value of the floor (about 15).
Little change (± 2)
Change of 0 ms or less).

Judgment of "increase in running resistance of the car door" A method of judging the possibility that the running resistance of the car door has increased is as follows. , B1 both increase by a certain value or more (10% or more) with respect to the initial values of the floor times a1, b1 and time a3, b3 also increase by a certain value or more with respect to the initial value of the floor (20 ms or more). ) It has been done.

Judgment of "change in the closing position of the car door switch" The cause of the changing position of the car door switch GS is that the mounting bolts of the bracket fixing the car door switch GS are loose or the car door switch GS is Looseness of the mounting screw of the cam to be operated, wear of the operation roller of the car door switch GS body, etc. When there is a call on another floor, the car 50 will run if the car door 51 is closed. However, if both the landing door lock switch DS and the car door switch GS are turned on, the travel command is issued. The running command is not output until the full-closed detection switch CLS is turned on without being output. In addition, if the door 51 of the car opens during driving,
0 is designed to stop suddenly, but in this case, the car 50 is allowed to run even if there is a gap in the car door 51 to the extent that only the fully closed detection switch CLS is turned off. The car 50 is stopped when either the switch DS or the car door switch GS is turned off. As described above, the traveling command of the car 50 is not output even when the car door switch GS is turned on, and is output only when the fully closed detection switch CLS is turned on. The reason is that the elevator car 5
When foreign matter such as dust is confined at the closed end of the 0 car sill 62, and the car door switch GS is turned on and started, the car door switch GS can be easily turned off by the vibration of the car 50 during traveling. This will prevent the car 50 from suddenly stopping because of the above condition.

When the closing position of the car door switch GS changes, the closing time from a certain reference point (preferably a fully closed detection switch) changes both when the door is open and when the door is closed. Since the change in the closing time also occurs when the running resistance of the door increases, it is necessary to determine when the entire door opening / closing time has not changed.

Therefore, the method of judging the possibility that the closing position of the car door switch has changed is that the door opening / closing times a1 and b1 of the entire area are the same for all the floors where the door is opened / closed. There is almost no change with respect to the initial values of the times a1 and b1 (change of less than ± 5%), and the fully closed detection switch C
The operating times a2 and b2 at the time of operating the LS and at the time of operating the car door switch GS are respectively initial values (about 50 to 100 m).
This means a change of 20 ms or more with respect to s).

Judgment of "change in the closing position of the hall door lock switch" The change in the closing position of the hall door lock switch DS is the same as when a certain signal (in this embodiment, the signal of the fully closed detection switch CLS) is operating. It means that the operating time of the landing door lock switch DS has changed. The reason for changing the closing time of the landing door lock switch DS is that the door lock device body 75 and the door lock hook 7 shown in FIG.
7 position shift, hanger 72 to the landing door panel 70
There is a displacement of the hanger 72 due to loosening of the bolts that fix the. In this case, the dimension x in FIG. 7 also changes relatively, and the door is in the middle of a process leading to a failure. That is, as shown in FIG. 7, the dimension x which is the gap between the hook 77 of the door lock device 75 of the hall door 70 and the lock seat 79 of the hall door lock switch DS and the hanging dimension h are
The prescribed installation dimensions are controlled so that the door can be unlocked and locked smoothly and securely. If the mounting bolt of the door lock device 75 is loosened and the hook 77 is displaced and the dimension x becomes 0 mm, the hook 77 and the lock seat 79 of the landing door lock switch DS are caught during the door opening operation. Both the landing door 70 and the car door 51 cannot be opened, and if the dimension x is too large, the landing door lock switch DS cannot be turned on when the door is closed.

In the above case, the relative position of the engagement roller 76 of the landing door of FIG. 6 and the engagement device 60 of the car of FIG. 4 (the movable side engagement roller 76 when the door is fully closed).
And the gap between the engaging device 60) changes, the operation timing of the hall door lock switch DS changes relative to the operation timing of the switch attached to the car. For example, the movable side engagement roller 7 in the fully closed state
6 and the engagement device 60 is 11mm when the elevator is installed
However, if the door lock device main body 75 is displaced by 13 mm, the engaging device 60 is movable when the door 51 of the car is opened 11 mm from the closed end during installation and door opening operation. It started to lift the hook 77 by coming into contact with the engagement roller 76, but when the gap between the movable side engagement roller 76 and the engagement device 60 became 13 mm, the car door was further opened by 2 mm compared with 11 mm when opened. The hook 77 begins to lift when 51 is opened,
The landing door lock switch DS will be turned off.

Therefore, in the method of judging the change in the closing position of the landing door lock switch on a certain floor, the door opening / closing times a1 and b1 in the entire area hardly change with respect to the initial value of the floor (less than ± 5%. Change), and the operating times a3 and b3 at the time of operation of the landing door lock switch DS and at the time of operation of the fully closed detection switch CLK are the initial values (about 150) of the floor
.About.200 ms), the change is ± 25 ms or more.

Judgment of "foreign matter generation in the vicinity of the closed end of the landing door" When dust clogging occurs near the closed end of the groove of the sill 81 of the landing door 70 or when dust is accumulated on the closed end above the door rail 73. Is the landing door 7 only when the door is closed
The running resistance near the closed end of 0 increases. Therefore, when the door is in the closing operation, the car door 51 closes normally near the closing end, but the landing door 70 closes a little later than usual, so that the landing door lock switch DS is turned on. Be late.

Therefore, in the method of determining the possibility that the landing door 70 has occurred near the closed end, the door opening / closing times a1 and b1 in the entire area hardly change from the initial value of the floor (± 5%). Less than), and the operating time during operation of the landing door lock switch DS and during operation of the fully closed detection switch CLS becomes smaller than the initial value when the door is closed (30 ms or more), and almost changes when the door is opened. No (change of less than 20 ms).

Hereinafter, the closing position change of the fully closed detection switch,
Regarding the change in the closing position of the full-open detection switch, dust clogging near the closed end of the car, and dust clogging near the open end of the car, the operating time a0 to a3, b0 of each operation signal is similarly set.
It suffices to perform a comparative analysis with the initial value of the floor in an appropriate combination of b3.

The comparison judgment by the comparison judgment circuit 34 may be made every time the door is opened or closed, or the comparison judgment may be made by an average value when the number of times of opening and closing is several times. That is, during the diagnostic operation during the time when the elevator is not used, the comparison judgment is performed every time the door is opened and closed, and when the passengers often use it during the daytime, the comparison judgment is performed by the average value of several times. There is also a way to do it.

If the result of the comparison and determination is abnormal, the detected date and time, the abnormality detection code indicating the details of the abnormality, the floor name, the initial value, and the measured value are stored in the second storage circuit 35.
To store. Then, this stored data is displayed or printed on the display device 5 regularly (about once a month), and at the time of the next periodical inspection by a specialist engineer, based on the output content of abnormality detection, the related parts are displayed. Perform an inspection.

When the comparison judgment is performed, the comparison is made with the initial value, but the comparison value is set in several stages, and when the value immediately requires inspection and maintenance, the terminal device 4 is reached.
Alerts are sent immediately to the monitoring center, etc. via.

As described above, in this embodiment, when the door of the elevator car is opened and closed, the door open command signal, the door close command signal, the car door switch signal, the fully closed detection signal, the fully opened detection signal, and the landing door lock switch. Use the elevator because it measures the time between predetermined signals among the signals, compares the measured values with the corresponding specified values, and outputs the inspection instruction information when an abnormal value is indicated. It is possible to reduce the inspection time of the elevator door and the labor for the inspection without deteriorating the service of the customer, and it is possible to accurately and accurately detect the abnormality of the door.

Further, since the alarm information is output when an abnormal value that requires an immediate inspection is displayed, it is necessary to promptly deal with the abnormality of the elevator door, especially the serious abnormality. There is also an effect that is possible.

[0044]

As described above, according to the present invention, the door open command signal, the door close command signal, the car door switch signal, the output signal of the first switch, and the second switch are provided when the door of the elevator car is opened and closed. Of the switch output signal of the third switch, and the operation time between the predetermined signals of the output signal of the third switch is measured, and those measured values are compared with the corresponding specified values. The cause of the door abnormality can be easily
In addition, it is possible to accurately and accurately capture the information, the elevator door can be inspected without deteriorating the service of the elevator user, and the labor and time required for the inspection by the maintenance staff can be reduced.

[Brief description of drawings]

FIG. 1 is a block diagram of an elevator door opening / closing inspection apparatus according to an embodiment of the present invention.

FIG. 2 is a time chart of each signal during a door opening operation in the present embodiment.

FIG. 3 is a time chart of each signal during a door closing operation in this embodiment.

FIG. 4 is a conceptual diagram showing a state where a door of an elevator car is fully closed as viewed from a landing side.

5 is a perspective view of the vicinity of the engagement device shown in FIG.

FIG. 6 is a conceptual diagram showing a fully closed state of a door of an elevator when viewed from the car side.

FIG. 7 is a detailed view of the door lock portion shown in FIG.

[Explanation of symbols]

 1 Car 2 Operation control device 3 Inspection device GS Car door switch CLS Fully closed detection switch OLS Fully open detection switch DS Landing door lock switch ZOPEN Door open command signal ZCLOSE Door close command signal 31 Operating time measurement circuit 32 First memory circuit 33 Initial value storage circuit 34 Comparison judgment circuit 35 Second storage circuit 36 Terminal device 37 Display device 51 Car door 60 Engagement device 70 Landing door 75 Door lock device 76 Movable side engagement roller 77 Hook

Claims (5)

[Claims] 1. A car door that is opened by a door open command signal and closed by a door close command signal, a first switch that detects a substantially fully closed position of the car door, and a predetermined position from the fully closed position of the car door. In an elevator equipped with a second switch for detecting a closed position with a minute gap, a landing door that opens and closes in conjunction with the car door, and a third switch for detecting whether or not the landing door is locked. Read means for reading the respective operating times of the first switch, the second switch and the third switch, and a comparison for comparing the respective operating times read by the reading means with respective prescribed operating times An elevator door opening / closing inspection apparatus comprising: means and a judging means for judging whether the door is opened or closed based on the result obtained by the comparison means. 2. The elevator door opening / closing inspection apparatus according to claim 1, wherein each of the specified operation times is an operation time measured when the elevator is installed. 3. The elevator door opening / closing inspection apparatus according to claim 1, wherein each of the specified operation times is set for each floor. 4. The door opening / closing inspection apparatus for an elevator according to claim 1, wherein each operation time compared by the comparison means is an operation time read out each time the car door and the landing door are opened / closed. .. 5. The elevator according to claim 1, wherein each operation time compared by the comparison means is an average value of each operation time of opening / closing operations of the car door and the landing door a predetermined number of times. Door open / close inspection device.