JP2012162361A - Device for diagnosing double-deck elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for diagnosing a double-deck elevator capable of drastically reducing trouble for diagnosing a rope extension quantity of an intrastory adjusting device and contributing to prevent deterioration of landing accuracy.SOLUTION: The device for diagnosing the double-deck elevator has an outside car elevatably arranged in an elevating passage, upper and lower riding cars hung inside of the outer car by a rope and arranged movably in a vertical direction while lining in the vertical direction, a driving device arranged in the outer car, having a driving sheave around which the rope is wound, and driving the vertical movement of both the upper and lower riding cars, and a control means making the outer car run to a predetermined position of the elevating passage with predetermined one riding car of both the riding cars moved to a predetermined position relative to the outer car and diagnosing the extension of the rope based on the moving distance of the other riding car of both the riding cars from the predetermined story floor at the time point when the outer car comes the predetermined position of the elevating passage.

Description

  The present invention relates to a diagnostic apparatus for a double deck elevator.

  In a double deck elevator equipped with two upper and lower cars in an outer car that can be moved up and down in the hoistway, the upper car and the lower car are suspended by ropes in the outer car. A rope type floor adjustment device that adjusts the distance between the upper car and the lower car by moving the upper car and the lower car in the outer car by being driven by the car position adjusting drive. Is conventionally known (see, for example, Patent Documents 1 to 3).

International Publication No. 2002/038482 Japanese Unexamined Patent Publication No. 2007-331871 Japanese Unexamined Patent Publication No. 2010-126282

  By the way, in the conventional double deck elevator equipped with such a rope-type floor adjustment device, when elongation occurs in the rope of the floor adjustment device that holds the upper and lower cars in the outer car, the upper and lower There is a possibility that the position of the car will be displaced and a landing error will occur. Thus, for example, in the one described in Patent Document 3, in the rope for suspending the upper and lower car in the outer car, a wire rope is provided in a range in contact with the pulley etc. and the extension due to the load in a range not in contact with the pulley etc. We are trying to reduce rope elongation by providing auxiliary cords that are less affected by

  However, in any of the conventional double deck elevators disclosed in Patent Documents 1 to 3 above, it is not possible to completely prevent the rope extension of the floor adjustment device. Therefore, it is necessary to make a diagnosis of the amount of rope extension, adjustment based on the diagnosis result, etc. by the hand of a maintenance worker or the like. For this reason, there is a problem that a troublesome labor is required for the diagnosis and adjustment work of the rope elongation amount. In particular, in order to prevent the landing accuracy from being deteriorated due to the rope elongation, it is necessary to carry out the diagnosis work of the rope elongation amount at a high frequency, which is very troublesome.

  The present invention has been made to solve such a problem, and can greatly reduce the labor required for diagnosing the amount of rope elongation of the interstitial adjustment device. It is possible to obtain a diagnostic device for a double deck elevator that can be used and contribute to prevention of deterioration of the landing accuracy.

  In the diagnostic apparatus for a double deck elevator according to the present invention, the outer cage which is a frame body disposed in a hoistway so as to be movable up and down, and is suspended by a rope inside the outer cage and arranged to be movable up and down. An upper car, a lower car that is suspended by the rope below the upper car inside the outer car, and is disposed so as to be vertically movable. A driving device having a drive sheave wound around and driving the vertical movement of both the upper car and the lower car; and a predetermined one of the two cars to the outer car. The outer car travels to a predetermined position on the hoistway in a state where the outer car is moved to the position of the hoistway, and the other of the two cars at the time when the outer car reaches the predetermined position on the hoistway. Predetermined floor position Based on the moving distance of al, a structure in which and a control unit for diagnosing the elongation of the rope.

  In the diagnostic apparatus for a double deck elevator according to the present invention, it is possible to greatly reduce the number of steps required for diagnosing the amount of rope elongation of the floor adjustment device, enabling the diagnosis of high-frequency rope elongation and making the landing accuracy There is an effect that it can contribute to prevention of deterioration.

It is a figure which illustrates typically the whole structure of the diagnostic apparatus of the double deck elevator which concerns on Embodiment 1 of this invention. It is a mode transition diagram of the diagnostic apparatus for a double deck elevator according to Embodiment 1 of the present invention. It is a figure which shows the operation | movement in the diagnostic mode of the diagnostic apparatus of the double deck elevator which concerns on Embodiment 1 of this invention. It is a figure which shows the operation | movement in the normal completion | finish mode of the diagnostic apparatus of the double deck elevator which concerns on Embodiment 1 of this invention. It is a figure which shows the operation | movement in the interruption mode of the diagnostic apparatus of the double deck elevator which concerns on Embodiment 1 of this invention. It is a figure explaining the calculation method of the rope elongation amount by the diagnostic apparatus of the double deck elevator which concerns on Embodiment 1 of this invention.

  The present invention will be described with reference to the accompanying drawings. Throughout the drawings, the same reference numerals indicate the same or corresponding parts, and redundant description thereof will be simplified or omitted as appropriate.

Embodiment 1 FIG.
1 to 6 relate to Embodiment 1 of the present invention. FIG. 1 is a diagram schematically illustrating the overall configuration of a diagnostic device for a double deck elevator, FIG. 2 is a mode transition diagram of the diagnostic device, and FIG. 3 is a diagram illustrating the operation of the diagnostic device in the diagnostic mode, FIG. 4 is a diagram illustrating the operation of the diagnostic device in the normal termination mode, FIG. 5 is a diagram illustrating the operation of the diagnostic device in the interruption mode, and FIG. It is a figure explaining the diagnostic method of quantity.

  In FIG. 1, reference numeral 1 denotes an outer car that is a frame body that is disposed in an elevator hoistway 2 so as to be lifted and lowered. Further, a counterweight 3 for compensating for the load applied to the outer car 1 is also disposed in the hoistway 2 so as to be movable up and down. In a machine room (not shown) at the top of the hoistway 2, a main hoisting machine 5 for driving the raising and lowering of the outer car 1 and the counterweight 3 is installed. One end of the main rope 4 is connected to the upper portion of the outer cage 1. The main rope 4 extends vertically upward in the hoistway 2 from the upper part of the outer car 1, and the middle is wound around the drive sheave of the main hoisting machine 5. The other end side of the main rope 4 extends vertically downward from the drive sheave of the main hoist 5 into the hoistway 2 and is connected to the upper portion of the counterweight 3. Thus, the outer cage 1 and the counterweight 3 are suspended in the hoistway 2 in the shape of a sway by the main rope 4.

  Inside the outer car 1, two cars, an upper car 6 and a lower car 7 on which passengers, luggage, etc. are loaded, are arranged so as to move up and down. An auxiliary hoisting machine 9 for driving the vertical movement of the upper car 6 and the lower car 7 in the outer car 1 is installed on the upper part of the outer car 1. One end of the sub rope 8 is fixed to the top of the outer cage 1. Then, after one end of the secondary rope 8 is wound around a pulley that is rotatably provided on the upper portion of the upper car 6, an intermediate portion of the secondary rope 8 is wound around a drive sheave of the secondary hoisting machine 9. It has been. The other end of the auxiliary rope 8 as viewed from the position where the auxiliary rope 8 is wound around the drive sheave of the auxiliary hoisting machine 9 is wound around a pulley that is rotatably provided at the lower part of the lower car 7. The other end of the secondary rope 8 is also fixed to the upper portion of the outer cage 1 in the same manner as one end.

  Thus, the upper car 6 and the lower car 7 are suspended inside the outer car 1 by the sub rope 8 so as to be movable up and down in a state where they are lined up and down. When the auxiliary hoisting machine 9 is rotated in a predetermined direction, the upper car 6 is moved upward in the outer car 1, and the lower car 7 is moved downward in the outer car 1, respectively. The distance between the upper car 6 and the lower car 7 can be increased. Conversely, by rotating the auxiliary hoisting machine 9 in the direction opposite to the one direction, the upper car 6 moves downward in the outer car 1 and the lower car 7 moves upward in the outer car 1. And the distance between the upper car 6 and the lower car 7 can be reduced.

  In this way, by the auxiliary rope 8 and the auxiliary hoisting machine 9 that hold the upper car 6 and the lower car 7, the upper car 6 and the lower car 7 stop between the upper and lower adjacent floors. The floor adjustment device is configured to adjust the distance between the upper car 6 and the lower car 7 according to the distance.

  The general operation of the double deck elevator, including the raising and lowering of the outer car 1 by rotating the main hoisting machine 5, is controlled by, for example, the main controller 10 installed in the machine room. Further, the vertical movement of the upper car 6 and the lower car 7 in the outer car 1 by rotating the auxiliary hoisting machine 9 is controlled by a sub-control device 11 installed on the upper part of the outer car 1. . The sub control device 11 is driven by the sub hoisting machine 9 in accordance with a command from the main control device 10 to move the upper car 6 and the lower car 7 in the outer car 1 up and down.

  The drive sheave portion of the main hoist 5 is provided with a speed detector 12 that detects the movement accuracy of the outer car 1 (the upper car 6 and the lower car 7) by detecting the rotational speed of the drive sheave. It has been. The speed detection signal from the speed detector 12 is output to the main controller 10.

  In the vicinity of the upper end in the hoistway 2 and the upper car 6, an upper end detecting device 13 in the hoistway is provided for detecting that the outer car 1 has reached a predetermined distance from the upper end in the hoistway 2. It has been. The upper end detection device 13 in the hoistway is composed of a switch part and a cam part which form a pair, and a switch part is installed on one of the inner wall of the hoistway 2 and the upper car 6 side, and a cam part is installed on the other Has been. The upper end detection device 13 in the hoistway detects that the outer cage 1 has reached a position at a predetermined distance from the upper end of the hoistway 2 by the cam portion coming into contact with the switch portion, and outputs a detection signal as a main signal. Output to the control device 10.

  Further, in the vicinity of the lower end in the hoistway 2 and the lower car 7, the lower end detecting device 14 in the hoistway for detecting that the outer car 1 has reached a predetermined distance from the lower end in the hoistway 2. Is provided. The lower end detection device 14 in the hoistway is composed of a switch part and a cam part that form a pair. The switch part is installed on one of the inner wall of the hoistway 2 and the side surface of the lower car 7, and the cam part is installed on the other side. Has been. Then, the lower end detecting device 14 in the hoistway detects that the outer cage 1 has reached a position at a predetermined distance from the lower end of the hoistway 2 by the cam portion coming into contact with the switch portion, and sends a detection signal as a main signal. Output to the control device 10.

  In the vicinity of the upper end in the outer car 1 and the upper car 6, an outer car inner upper end detection device 15 for detecting that the upper car 6 has reached the upper end position in the outer car 1 is provided. The outer car upper end detection device 15 includes a pair of a switch part and a cam part. A switch part is installed on one of the inner side of the outer car 1 and the side surface of the upper car 6, and a cam part is installed on the other side. ing. Then, the upper end detection device 15 in the outer car detects that the upper car 6 has reached the upper end position in the outer car 1 by the cam part coming into contact with the switch part, and sends a detection signal to the sub-control device 11. To output.

  In addition, near the upper end in the outer car 1 and in the lower car 7, an outer car inner lower end detection device 16 for detecting that the lower car 7 has reached the lower end position in the outer car 1 is provided. Yes. The outer car lower end detecting device 16 includes a pair of a switch part and a cam part, and a switch part is installed on one of the inner side of the outer car 1 and the side surface of the lower car 7, and a cam part is installed on the other side. ing. The outer car lower end detecting device 16 detects that the lower car 7 has reached the upper end position in the outer car 1 by the cam portion coming into contact with the switch portion, and sends a detection signal to the sub-control device 11. To output.

  A floor plate 17 for defining a door zone is attached to each floor position in the hoistway 2. The upper car 6 is provided with an upper car floor position detector 18 and the lower car 7 is provided with a lower car floor position detector 19 so as to face the floor plate 17. Yes.

  The mounting position of the upper car floor position detector 18 is adjusted so as to face the floor plate 17 when the upper car 6 is within a predetermined door zone from the floor surface. . Then, while facing the floor plate 17 (that is, while the upper car 6 is in the door zone), the upper car floor position detector 18 outputs a detection signal to the main controller 10.

  Further, the lower car floor position detector 19 has its mounting position adjusted so as to face the floor plate 17 when the lower car 7 is within the predetermined door zone from the floor surface. ing. The lower car floor position detector 19 outputs a detection signal to the main control device 10 while facing the floor plate 17 (that is, while the lower car 7 is in the door zone).

The diagnostic apparatus for a double deck elevator configured as described above is operating while changing several operation modes under the control of the main control device 10 and the sub control device 11. FIG. 2 shows a transition diagram of this operation mode.
First, the operation mode of the diagnostic device for the double deck elevator includes a normal mode for performing a normal driving operation, a diagnostic mode for diagnosing the extension amount of the secondary rope 8, a normal termination mode for performing diagnosis termination processing in the diagnostic mode, and a diagnosis. There are four interrupt modes for interrupting diagnosis operation in the mode.

  The normal mode is an operation mode in which a normal operation is performed without diagnosing the extension amount of the secondary rope 8. In this normal mode, when a call to any floor is not registered and the main control device 10 receives a rope stretch diagnosis request, the mode is shifted to the diagnosis mode. The rope stretch diagnosis request may be transmitted from the outside of the diagnostic device of the double deck elevator (for example, using a maintenance tool or the like), or the main controller 10 periodically sends a rope stretch diagnosis request ( (To itself) may be output.

  The diagnosis mode is an operation mode in which a diagnosis operation for diagnosing the extension amount of the auxiliary rope 8 is performed. When the diagnostic operation in this diagnostic mode is completed, the process shifts to the normal end mode. On the other hand, when a call is registered during the diagnostic operation, the mode is shifted to the interruption mode.

  The normal end mode is an operation mode for performing a process for ending diagnosis of the extension amount of the secondary rope 8. When the termination process is performed in the normal termination mode and the diagnosis of the extension amount of the secondary rope 8 is completed, the mode shifts to the normal mode.

  The interruption mode is an operation mode in which the outer car 1 and the upper car 6 and the lower car 7 are stopped by executing a diagnostic operation interruption process. When the diagnostic operation interruption process is completed and all of the outer car 1 and the upper car 6 and the lower car 7 are stopped, the process shifts to the normal mode in order to respond to the registered call. When the transition condition to the diagnostic mode described above is satisfied again in the normal mode, the diagnostic operation is resumed by shifting to the diagnostic mode.

  FIG. 3 shows the diagnostic driving operation in the diagnostic mode. When shifting from the normal mode to the diagnosis mode, first, the main control device 10 outputs a rope stretch diagnosis command to the sub-control device 11 (step S1). Then, the auxiliary hoisting machine 9 that has received this rope elongation diagnosis command in step S2 drives the auxiliary hoisting machine 9 in step S3, and sets one of the upper car 6 and the lower car 7 in advance. The car is moved to a predetermined position with respect to the outer car 1.

  Here, it is assumed that the upper car 6 is moved to the upper end position in the outer car 1. That is, the sub-control device 11 drives the sub-winding machine 9 to move the space between the upper car 6 and the lower car 7 in the direction of increasing. Then, when a detection signal is input from the upper end detection device 15 in the outer car, the sub control device 11 stops the sub hoisting machine 9 and stops the upper car 6 and the lower car 7.

  The movement of one of the upper car 6 and the lower car 7 to a predetermined position with respect to the outer car 1 (in this case, the movement of the upper car 6 to the upper end position in the outer car 1) is completed. Then, it progresses to step S4. In step S <b> 4, the sub control device 11 outputs a diagnosis permission signal to the main control device 10. The main controller 10 that has received the diagnosis permission signal in step S5 drives the main hoist 5 in step S6 to move the outer car 1 to a predetermined position in the hoistway 2.

  Then, main controller 10 determines the other of the upper car 6 and the lower car 7 when the outer car 1 reaches a predetermined position in the hoistway 2 (that is, the upper car 6 and the lower car). The extension amount of the secondary rope 8 based on the moving distance from the nearest floor position of the car 7 that is not the one that has been moved to the predetermined position with respect to the outer car 1 in the previous step S3. Is calculated.

  Here, it is assumed that the predetermined position at which the outer car 1 is moved in step S6 is the detection position of the upper terminal detection device 13 in the hoistway (position at a predetermined distance from the upper end in the hoistway 2). Here, it is the lower car 7 that is the object of detecting the movement distance from the nearest floor position in order to calculate the extension amount of the sub rope 8. This is because the upper car 6 is moved to a predetermined position with respect to the outer car 1 in the previous step S3.

A method of calculating the extension amount of the secondary rope 8 in step S6 will be described with reference to FIG.
The main control device 10 drives the main hoist 5 to raise the outer car 1 to move it to the upper end of the hoistway 2. The main controller 10 calculates the moving distance of the undercarriage 7 by integrating (accumulating) the speed detected by the speed detector 12 over time while the outer car 1 is moving (ascending). Yes. The travel distance of the lower car 7 is reset to 0 each time the lower car 7 passes the floor position (every time a detection signal is output from the lower car floor position detector 19). Thus, main controller 10 calculates the travel distance of lower car 7 from the nearest floor position based on the detection results of speed detector 12 and lower car floor position detector 19.

  Then, when the outer car 1 reaches a position at a predetermined distance from the upper end in the hoistway 2, that is, when the detection signal is output from the upper terminal detection device 13 in the hoistway, By comparing the travel distance of the car 7 with the value stored at the previous diagnosis, the change in the travel distance of the undercarriage 7 from the nearest floor position can be calculated from the previous diagnosis. Calculated as the amount of extension of the secondary rope 8.

  Thus, when the calculation of the extension amount of the sub rope 8 is completed, the process proceeds to step S7. In this step S7, the main controller 10 stops the outer car 1 and completes the diagnostic operation. When the diagnosis operation is completed, the operation mode shifts to the normal end mode as described above.

  FIG. 4 shows the diagnosis end process in the normal end mode. First, in step S11, main controller 10 transmits to sub controller 11 the value of the extension amount of sub rope 8 calculated in the diagnostic operation in the diagnostic mode (particularly, step S6 in FIG. 3). Then, the process proceeds to step S13, and the storage device (main control device storage) included in the main control device 10 is used in order to use the travel distance of the undercarriage 7 from the nearest floor position calculated in this diagnosis for the next diagnosis. Means).

  Further, the sub control device 11 that has received the value of the extension amount of the sub rope 8 transmitted from the main control device 10 in step S12 stores the value of the extension amount of the sub rope 8 received in the sub control device 11. Store in the device (sub-control device storage means). Then, the process proceeds to step S <b> 15, and the sub control device 11 transmits an end permission signal to the main control device 10. Receiving this end permission signal in step S16, main controller 10 proceeds to step S17, determines that the diagnosis is completed, and completes the secondary rope 8 extension diagnosis. When the secondary rope 8 elongation diagnosis is completed, the operation mode shifts to the normal mode as described above.

  Note that the extension amount of the auxiliary rope 8 stored in the auxiliary control device storage means in step S14 of FIG. 4 in the normal termination mode is used for correction in the floor adjustment during the operation in the normal mode thereafter. That is, when the interval between the upper car 6 and the lower car 7 is adjusted according to the distance between the adjacent upper and lower floors, the sub control device 11 uses the sub rope 8 stored in the sub control device storage means. The driving amount of the auxiliary hoisting machine 9 is corrected in consideration of the elongation amount. For this reason, even if elongation occurs in the sub rope 8, it is possible to maintain high landing accuracy.

  FIG. 5 shows the interruption process of the diagnostic operation in the interruption mode. First, in step S <b> 21, main controller 10 transmits a stop command signal to sub-controller 11. Then, the process proceeds to step S23, and if the outer car 1 is traveling, the driving of the main hoisting machine 5 is stopped and the outer car 1 is stopped.

  Further, the sub control device 11 that has received the stop command signal transmitted from the main control device 10 in step S22 stops the driving of the sub hoisting machine 9 if the upper car 6 and the lower car 7 are moving. The upper car 6 and the lower car 7 are stopped. Then, the process proceeds to step S <b> 25, and the sub control device 11 transmits an interruption permission signal to the main control device 10.

  The main control device 10 that has received the suspension permission signal from the sub-control device 11 in the state where step S23 has been completed proceeds from step S26 to step S27, determines that the car stop has been completed, and ends the diagnosis interruption processing. . When the diagnosis interruption process is completed, the operation mode shifts to the normal mode as described above.

  If the outer car 1 has already stopped, it is not necessary to execute step S23. Similarly, if the upper car 6 and the lower car 7 have already stopped, it is necessary to execute step S24. There is no. In addition, when a call is registered in the interrupt mode, if all the cars (the outer car 1, the upper car 6, and the lower car 7) are already stopped, the normal operation is immediately performed without going through the interrupt mode. You may move to mode.

  In the above, the travel distance of the undercarriage car from the nearest floor position calculated each time the secondary rope extension diagnosis is performed is stored in the storage device (main control device storage means) provided in the main control device. In the next diagnosis, the amount of extension of the secondary rope is obtained by comparing the value of the movement distance stored in the main controller storage means with the value of the newly calculated movement distance. Explained. In this regard, the movement distance calculated each time the secondary rope extension diagnosis is performed is stored in the main control device storage means, and a predetermined reference value is stored in the main control device storage means without being used for the next diagnosis. In addition, the extension of the secondary rope may be diagnosed based on this reference value. Alternatively, immediately after installing the elevator, where it is assumed that the secondary rope is not stretched, a diagnostic operation was performed in order to obtain the travel distance of the undercarriage from the nearest floor position, which was the reference, and was obtained at this time. The movement distance may be used as a reference value.

  The diagnostic apparatus for a double deck elevator configured as described above is configured such that a predetermined one of the upper car and the lower car is used as an outer car by a control means including a main control device and a sub control device. The outer car is moved to a predetermined position on the hoistway while being moved to a predetermined position, and the other car of the two at the time when the outer car reaches the predetermined position on the hoistway. The extension of the secondary rope is diagnosed based on the moving distance from the predetermined floor position.

  For this reason, it is possible to automatically diagnose the amount of rope elongation of the interstitial adjustment device, and it is possible to greatly reduce the labor involved in this diagnosis. Moreover, since the diagnosis of the amount of rope elongation can be automatically performed, the diagnosis of the amount of rope elongation can be performed frequently.

  In addition to the above, the amount of extension of the auxiliary rope by the auxiliary rope extension diagnosis is stored in the auxiliary control device storage means, and the auxiliary control device drives the auxiliary hoisting machine, which is the driving device, to drive the upper car. When the distance between the two is adjusted by moving both the lower car and the lower car up and down, the driving amount of the auxiliary hoisting machine is corrected based on the amount of extension of the auxiliary rope stored in the auxiliary control device storage means. It is what I did.

  For this reason, when rope elongation occurs, it is automatically corrected and the inter-floor adjustment is performed, so that the landing accuracy can be kept high. And even if it is a case where rope elongation generate | occur | produces, since landing accuracy is not impaired, it contributes also to the lifetime improvement of a rope.

DESCRIPTION OF SYMBOLS 1 Outer car 2 Hoistway 3 Balance weight 4 Main rope 5 Main hoisting machine 6 Upper car 7 Lower car 8 Sub rope 9 Sub hoist 10 Main controller 11 Sub controller 12 Speed detector 13 Upper part in hoistway End detection device 14 Lower end detection device in hoistway 15 Upper end detection device in outer car 16 Lower end detection device in outer car 17 Floor plate 18 Upper car floor position detector 19 Lower car floor position detector

Claims (5)

The outer cage, which is a frame that can be moved up and down in the hoistway,
The upper car that is suspended by a rope inside the outer car and arranged to be movable up and down,
A lower car that is suspended by the rope below the upper car inside the outer car and arranged to be movable up and down,
A driving device that is provided on the outer car and has a drive sheave around which the rope is wound, and that drives the vertical movement of both the upper car and the lower car;
In a state where one of the two cars is moved to a predetermined position with respect to the outer car, the outer car travels to a predetermined position of the hoistway, and the outer car moves up and down. Control means for diagnosing the extension of the rope based on the distance traveled from the predetermined floor position of the other of the two cars at the time of arrival at the predetermined position on the road, Diagnostic device for a double deck elevator. First storage means for storing a predetermined reference value;
The control means diagnoses the elongation of the rope by comparing the reference value stored in the first storage means with the moving distance from a predetermined floor position of the other car. The diagnostic apparatus for a double deck elevator according to claim 1.   The double deck according to claim 2, wherein the reference value stored in the first storage means is the moving distance from a predetermined floor position of the other car at the time of the previous diagnosis. Elevator diagnostic equipment. A second storage means for storing the amount of elongation of the rope by the diagnosis;
The control means drives the driving device and moves the both up and down to adjust the distance between the two based on the amount of the rope stretch stored in the second storage means. The diagnostic apparatus for a double deck elevator according to any one of claims 1 to 3, wherein the drive amount of the drive device is corrected. Speed detecting means for detecting the traveling speed of the outer car;
Floor position detection means for detecting that the upper car and the lower car are at the predetermined floor position, and
The control means calculates a movement distance of the other car from a predetermined floor position based on the detection result of the speed detection means and the detection result of the floor position detection means at the time of the diagnosis. The diagnostic apparatus for a double deck elevator according to any one of claims 1 to 4, wherein the diagnostic apparatus is a double deck elevator.

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