WO2011001764A1

WO2011001764A1 - Elevator equipment

Info

Publication number: WO2011001764A1
Application number: PCT/JP2010/058889
Authority: WO
Inventors: 高橋　理; 力雄近藤; 柴田　益誠
Original assignee: 三菱電機株式会社
Priority date: 2009-06-29
Filing date: 2010-05-26
Publication date: 2011-01-06
Also published as: JP2012180132A

Abstract

Disclosed is elevator equipment which makes it possible to reduce costs and to assess whether or not the position of a detection subject detector with respect to the detection subject is normal when the cage is stopped. A door zone position detection device (26) is provided with a plate (27) arranged within the shaft (1) and a plate detector (28) that detects the plate (27) and is arranged in the cage (2). A winder (5) is provided with a winder encoder (15) for detecting respectively the distance of movement and the speed of the cage (2). By using information from the position detection device (26) and the winder encoder (15), a calculation and comparison unit of a diagnostic device (41) finds the distance of movement of the cage (2) between when the cage (2) has stopped and when changeover takes place between detection and non-detection by the plate detector (28), and compares the distance of movement thus found with a reference value. The diagnostic device (41) finds the position of the plate detector (28) with respect to the plate (27) when the cage (2) is stopped, from the results of the calculation by the calculation and comparison unit.

Description

Elevator equipment

The present invention includes a detected object provided in either the hoistway and the car, and a detected object detector provided in either the hoistway and the car and detecting the detected object. The present invention relates to an elevator apparatus that detects a position of a car by a detected object detector detecting the detected object.

In the elevator system, when the car is stopped in the door opening / closing zone, the door of the car is engaged with the door of the landing so that the elevator doorway can be opened and closed. Conventionally, in order to detect whether the car is stopped in the door opening / closing zone, a door zone plate having a length corresponding to the door opening / closing zone is provided at a position corresponding to each floor in the hoistway. There is known an elevator in which a car is provided with a door zone plate detector for detecting a plate. In such a conventional elevator, for example, when the position of the door zone plate is deviated or there is a malfunction of the brake device, the stop position of the car with respect to the floor is deviated and a step is formed between the car floor and the landing floor. May occur.

Conventionally, in order to prevent the stop position of the car from deviating, the car travels from when the car is stopped to when the car is moved and the detection of the plate by the door zone plate detector is released. An elevator adjustment / maintenance device for diagnosing whether or not the position of the door zone plate is normal has been proposed by comparing the measured travel distance with a theoretical value.

The diagnosis in the conventional elevator is performed as follows. That is, first, the maintenance staff moves the car to make the car floor exactly coincide with the landing floor and stop the car on the floor. When the car is stopped on the floor, the detector detects the door zone plate. After this, the maintenance staff inputs a level confirmation signal indicating that the car floor exactly matches the landing floor to the adjustment maintenance device, and until the detection of the door zone plate by the door zone plate detector is canceled. Move the basket at low speed. The adjustment maintenance device measures the distance traveled by the car from the reception of the level confirmation signal until the detection of the door zone plate by the door zone plate detector is canceled, and the measured travel distance and a preset theory The value is compared. Thereby, it is diagnosed whether the position of a door zone plate is normal (for example, refer patent document 1).

JP-A-1-252479

However, in such a conventional elevator, it is necessary to newly add a signal generating device for generating a level confirmation signal and to provide an input circuit for receiving the level confirmation signal in the adjustment maintenance device. The cost cannot be reduced.

The present invention has been made to solve the above-described problems, and whether or not the position of the detected object detector with respect to the detected object is normal when the car is stopped on the floor. An object is to obtain an elevator apparatus capable of performing diagnosis and reducing costs.

An elevator apparatus according to the present invention includes a detected object that has a predetermined length and is arranged along a moving direction of a car, and a detected object detector that detects the detected object. One of the detector detectors is provided in the car, and the other is a position detection device provided at a position in the hoistway corresponding to each of the plurality of floors, a distance detection device for detecting the moving distance of the car, and the car And a detected object detector for the detected object when the car is stopped based on information from each of the position detecting device, the distance detecting device and the stop detecting device. And a calculation comparison unit that compares the calculated movement distance with a preset reference value based on the calculation result of the calculation comparison unit. The basket is Position with respect to the detection of the detected body detector when stopping on the floor is provided with a diagnostic device for diagnosing whether normal.

In the elevator apparatus according to the present invention, since the operation comparison unit of the diagnostic apparatus determines that the car is landing on the floor when the car is stopped, a dedicated signal as in the prior art is used. Without providing the generator, it is possible to diagnose whether the position of the detected object detector with respect to the detected object is normal when the car is stopped. Thereby, the number of parts can be reduced, and the whole elevator apparatus can be simplified. Accordingly, it is possible to diagnose whether the position of the detected object detector with respect to the detected object when the car is stopped on the floor is normal, and to reduce the cost.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows the elevator apparatus by Embodiment 1 of this invention. It is an enlarged view which shows the structure of the door zone position detection apparatus of FIG. It is a top view which shows the door zone position detection apparatus of FIG.

Embodiment 1 FIG.
1 is a block diagram showing an elevator apparatus according to Embodiment 1 of the present invention. In the figure, a car 2 and a counterweight 3 are provided in a hoistway 1 so as to be movable in the vertical direction. The car 2 is guided by a pair of car guide rails (not shown) installed in the hoistway 1, and the counterweight 3 is a pair of counterweight guide rails (not shown) installed in the hoistway 1. It is guided by. In addition, the car 2 and the counterweight 3 are suspended in the hoistway 1 by the suspension body 4. For example, a rope or a belt is used as the suspension body 4.

A hoisting machine (driving device) 5 that generates a driving force for moving the car 2 and the counterweight 3 is provided at the bottom (pit) in the hoistway 1. The hoisting machine 5 includes a hoisting machine main body 6 including a motor, and a drive sheave 7 around which the suspension body 4 is wound and rotated by the hoisting machine main body 6.

A pair of car suspension cars 8 is provided at the bottom of the car 2, and a counterweight suspension car 9 is provided at the top of the counterweight 3. At the upper part in the hoistway 1, two car-side return wheels 10, a counterweight-side return wheel 11, a first leashing device 12, and a second leashing device 13 are provided.

One end of the suspension 4 is connected to the first leashing device 12, and the other end of the suspension 4 is connected to the second leashing device 13. The suspension body 4 is wound around the first leashing device 12, the car suspension wheel 8, the car side return wheel 10, the drive sheave 7, the counterweight side return wheel 11 and the counterweight suspension wheel 9 in this order. 2 to the leashing device 13. The car 2 and the counterweight 3 are moved in the hoistway 1 by the rotation of the drive sheave 7.

The hoisting machine body 6 includes a brake device 14 that applies a braking force to the drive sheave 7 and a hoisting machine encoder (movement distance detector) 15 that generates a signal (pulse signal) corresponding to the rotation of the drive sheave 7. Is provided.

A speed governor 16 is provided in the upper part of the hoistway 1, and a tension wheel 17 is provided in the lower part of the hoistway 1. The governor 16 includes a governor sheave 18. A governor rope 19 is wound between the governor sheave 18 and the tension wheel 17. One end and the other end of the governor rope 19 are connected to a common connection lever 20 provided at the lower portion of the car 2. Accordingly, the governor rope 19 is stretched in a loop shape in the hoistway 1.

The governor rope 19 is moved together with the car 2. The governor sheave 18 is rotated in accordance with the movement of the governor rope 19. The speed governor 16 is provided with a speed governor encoder (movement distance detector) 21 that generates a signal (pulse signal) corresponding to the rotation of the speed governor sheave 18. Accordingly, the signal from the governor encoder 21 is a signal corresponding to the movement of the car 2.

The speed governor 16 performs a stop operation to stop power supply to the hoist 5 when the rotational speed of the speed governor sheave 18 reaches a predetermined first set overspeed, and the speed governor sheave 18 rotates. When the speed reaches a second set overspeed that is larger than the first set overspeed, a rope gripping operation for gripping the governor rope 19 is performed. When the speed governor 16 performs a stop operation, the driving of the motor of the hoisting machine body 6 is stopped, and the brake device 14 performs a braking operation that applies a braking force to the drive sheave 7. Further, when the speed governor 16 performs a rope gripping operation while the car 2 is moving, the connection lever 20 is displaced with respect to the car 2.

An emergency stop device 22 that interlocks with the connection lever 20 is provided at the bottom of the car 2. The emergency stop device 22 is operated by the displacement of the connection lever 20 with respect to the car 2 and grips each car guide rail. The braking force is directly applied to the car 2 by gripping the car guide rail by the emergency stop device 22.

The car 2 is provided with a car doorway (elevator doorway) 23. The car doorway 23 is opened and closed by the movement of a pair of car doors 24. Each car door 24 is moved with respect to the car 2 by a driving force of a door driving device (not shown) mounted on the car 2. Further, the car 2 is provided with a door open detector 25 for detecting whether or not the car entrance 23 is open. The car entrance 23 is opened and closed only when the car 2 is stopped. Therefore, the door open detector 25 functions as a stop detection device that detects that the car 2 is stopped.

A hall entrance (elevator entrance) (not shown) is provided at the landing on each floor. Each landing entrance is opened and closed by the movement of a pair of landing doors (not shown).

The car door 24 and the landing door are provided with an engaging device (not shown) for engaging the car door 24 and the landing door with each other. The car door 24 and the landing door are engaged by the engaging device only when the car 2 is in the door opening / closing zone set for each floor. Therefore, when the car 2 is stopped in the door opening / closing zone, the landing door is movable together with the car door 24 while being engaged with the car door 24 by the engaging device. The car doorway 23 and the landing doorway are opened and closed by moving together with the car door 24 while the door of the hall is engaged with the car door 24. The car entrance 23 and the hall entrance are opened by the movement of the door of the hall and the door 24 of the car, so that the car 2 and the hall communicate with each other.

The door zone position detection device 26 detects whether the car 2 is in the door opening / closing zone. The door zone position detection device 26 is provided in a plurality of door zone plates (detected bodies) 27 provided at positions corresponding to the floors in the hoistway 1 and the car 2, and the car 2 is in the door opening / closing zone. A door zone plate detector (detected body detector) 28 for detecting the door zone plate 27 at a certain time is provided.

Each door zone plate 27 is a plate having a length (predetermined length) corresponding to the length of the door opening / closing zone. The door zone plates 27 are arranged on a common straight line along the moving direction of the car 2. Each door zone plate 27 is fixed to the inner wall of the hoistway 1.

When the car 2 is in the door opening / closing zone, the door zone plate detector 28 detects the door zone plate 27 corresponding to the door opening / closing zone in which the car 2 exists. When the car 2 is out of the door opening / closing zone, the door zone plate detector 28 does not detect the door zone plate 27. That is, the door zone plate detector 28 is in a detection state when the car 2 is in the door opening / closing zone, and is in a non-detecting state when the car 2 is outside the door opening / closing zone. When the door zone plate detector 28 is in the detection state, a door zone detection signal is generated from the door zone plate detector 28, and when the door zone plate detector 28 is in the non-detection state, the door zone detection signal from the door zone plate detector 28 is detected. Does not occur.

Here, FIG. 2 is an enlarged view showing a configuration of the door zone position detecting device 26 of FIG. FIG. 3 is a plan view showing the door zone position detection device 26 of FIG. As shown in the figure, the door zone plate detector 28 has a pair of door zone sensors (an upper door zone sensor 29 and a lower door zone sensor 30). The

door zone sensors

29 and 30 are spaced from each other in the moving direction of the car 2.

Each of the

door zone sensors

29 and 30 has a light projecting unit 31 that emits light and a light receiving unit 32 that receives light from the light projecting unit 31. The light projecting unit 31 and the light receiving unit 32 face each other in the horizontal direction.

The door zone plate 27 is disposed between the light projecting unit 31 and the light receiving unit 32 when the door zone position detecting device 26 is viewed along the moving direction of the car 2 (FIG. 3). Accordingly, the door zone plate 27 can be inserted between the light projecting unit 31 and the light receiving unit 32 by the movement of the car 2.

The light from the light projecting unit 31 is blocked by inserting the door zone plate 27 between the light projecting unit 31 and the light receiving unit 32. Each of the

door zone sensors

29 and 30 detects the door zone plate 27 when the light from the light projecting unit 31 is shielded. That is, each of the

door zone sensors

29 and 30 is an optical sensor. Accordingly, in each of the

door zone sensors

29 and 30, a region between the light projecting unit 31 and the light receiving unit 32 is a detection region for detecting the door zone plate 27.

When the car 2 enters the door opening / closing zone while moving upward, the door zone plate 27 is detected in the order of the upper door zone sensor 29 and the lower door zone sensor 30. When the car 2 enters the door opening / closing zone while moving downward, the door zone plate 27 is detected in the order of the lower door zone sensor 30 and the upper door zone sensor 29. When the car 2 is in the door opening / closing zone, both the

door zone sensors

29 and 30 detect the door zone plate 27. That is, the door zone plate detector 28 enters a detection state when each of the

door zone sensors

29 and 30 detects the door zone plate 27, and generates a door zone detection signal.

In the upper part of the hoistway 1, as shown in FIG. 1, there is an upper final limit switch (upward limit switch) 33 for detecting an overshoot of the car 2 on the top floor, and a position below the position of the upper final limit switch 33. And an upper reference position switch 34 for detecting that the car 2 has reached the upper reference position.

In the lower part of the hoistway 1, there is a lower final limit switch (downward overshoot limit switch) 35 that detects an overshoot of the car 2 on the lowest floor, and a lower reference that is a position above the position of the lower final limit switch 35. A lower reference position switch 36 that is disposed at the position and detects that the car 2 has reached the lower reference position is provided.

Each of the upper final limit switch 33, the upper reference position switch 34, the lower final limit switch 35, and the lower reference position switch 36 is operated by a cam (not shown) provided in the car 2 to detect the position of the car 2. . That is, each of the upper final limit switch 33, the upper reference position switch 34, the lower final limit switch 35, and the lower reference position switch 36 is a contact type switch.

A cam is provided at each of the position for detecting overshoot on the top floor, the upper reference position, the lower reference position, and the position for detecting overshoot on the bottom floor, and a common contact type switch operated by each cam is provided. You may make it provide in the cage | basket | car 2.

At the bottom of the hoistway 1, a car shock absorber 37 positioned below the car 2 and a counterweight shock absorber 38 positioned below the counterweight 3 are provided.

The hoisting machine encoder 15, the governor encoder 21, the door closing detector 25, the door zone plate detector 28, the upper final limit switch 33, the upper reference position switch 34, the lower final limit switch 35, and the lower reference position switch 36, respectively. Is sent to a control panel 39 provided in the hoistway 1. The control panel 39 includes the hoisting machine encoder 15, the governor encoder 21, the door closing detector 25, the door zone plate detector 28, the upper final limit switch 33, the upper reference position switch 34, the lower final limit switch 35, and the lower reference. Based on information from each of the position switches 36, the operation of the elevator is controlled. A drive control device 40 and a diagnostic device 41 are mounted on the control panel 39.

The drive control device 40 performs call registration by operating at least one of a destination floor button (not shown) provided in the car 2 and a landing button (not shown) provided at each hall, The car 2 is moved to the destination floor by call registration, and the car 2 is stopped in the door opening / closing zone corresponding to the destination floor. The drive control device 40 determines whether or not the car 2 is in the door opening / closing zone based on information from the door zone plate detector 28.

Further, the drive control device 40 stops the car 2 at the destination floor, then moves the door 24 of each car to open the car entrance 23, and after a predetermined time has elapsed, 24 is moved to close the car doorway 23. The drive control device 40 determines whether or not the car doorway 23 is open based on information from the door open detector 25. The drive control device 40 moves the car 2 to the next stop floor after the door closing operation of the car door 24 is completed.

The diagnosis device 41 diagnoses whether the position of the door zone plate detector 28 relative to the door zone plate 27 when the car 2 is stopped on the floor is normal. The diagnostic device 41 obtains the moving distance of the car 2 and the speed of the car 2 based on the information from the hoisting machine encoder 15. Therefore, in this example, the hoisting machine encoder 15 serves as both a distance detection device that detects the moving distance of the car 2 and a speed detection device that detects the speed of the car 2. The speed detection device as a function of the hoisting machine encoder 15 also functions as a stop detection device that detects that the car 2 is stopped by detecting that the speed of the car 2 has become zero. .

Further, the diagnostic device 41 has an operation comparison unit. When the speed of the car 2 is 0 with the door zone plate detector 28 detecting the door zone plate 27, and the door zone plate detector 28 detects the door zone plate 27. It is determined that the car 2 is landing on the floor at least at any time when the car doorway 23 is open.

The operation comparison unit determines that the car 2 has landed on the floor until the car 2 moves until the door zone plate detector 28 is switched from detection to non-detection due to the movement of the car 2. The distance is obtained, and the obtained movement distance is compared with a preset reference value.

The diagnosis device 41 diagnoses whether or not the position of the door zone plate detector 28 relative to the door zone plate 27 when the car 2 is stopped on the floor is normal based on the calculation result by the operation comparison unit. . That is, the diagnosis device 41 performs a diagnosis (normal diagnosis) that the elevator is normal when the difference between the movement distance obtained by the calculation comparison unit and the reference value is smaller than a predetermined threshold value, and obtains the calculation by the calculation comparison unit. When the difference between the travel distance and the reference value is greater than or equal to a predetermined threshold, a diagnosis that the elevator is abnormal (abnormal diagnosis) is performed. When the diagnosis device 41 performs an abnormality diagnosis, an interruption signal is sent from the diagnosis device 41 to the drive control device 40, and the drive control device 40 interrupts the operation of the elevator.

Next, the diagnosis procedure will be described. Elevator diagnosis is performed during maintenance work by maintenance personnel. First, the maintenance engineer switches an operation mode of the elevator from the normal operation mode to the maintenance operation mode by operating an operation mode switching key (not shown). Thereby, the manual driving | operation which moves the cage | basket | car 2 by a manual operation of a maintenance worker is attained.

After this, the maintenance person gets in the car 2 from the landing, moves the car 2 to the lowest floor while operating the manual operation switch in the car 2, and stops the car 2 on the lowest floor. At this time, the door zone plate detector 28 enters a detection state in which the door zone plate 27 is detected. When the maintenance staff stops the car 2 on the floor, the maintenance staff adjusts the stop position of the car 2 by operating the manual operation switch so that the car floor coincides with the landing floor. Thereafter, the maintenance person performs the door closing operation after performing the door opening operation of the car door 24 by the operation of the operation switch in the car 2 with the car 2 stopped on the floor.

When the door closing operation of the car door 24 is completed, the maintenance staff moves the car 2 upward. Thereby, the door zone plate detector 28 is removed from the range of the door zone plate 27 corresponding to the lowest floor, and the door zone plate detector 28 is switched from the detection state to the non-detection state.

After this, the maintenance staff stops the car 2 on the floor directly above the lowest floor. Also at this time, the maintenance staff adjusts the stop position of the car 2 so that the car floor coincides with the landing floor. As a result, the door zone plate detector 28 enters the range of the door zone plate 27 corresponding to the floor directly above, and the door zone plate detector 28 switches from the non-detection state to the detection state.

By performing the above-described manual operation by the maintenance staff, in the diagnostic device 41, whether the position of the door zone plate detector 28 relative to the door zone plate 27 when the car 2 is stopped at the lowest floor is normal. Is diagnosed.

When a diagnosis (normal diagnosis) that the position of the door zone plate detector 28 relative to the door zone plate 27 is normal is performed by the diagnostic device 41, the car 2 is landed on the floor immediately above, Maintenance operation of the elevator is continued. On the other hand, when the abnormality diagnosis is performed by the diagnostic device 41 due to a cause such as the position of the door zone plate 27 in the hoistway 1 being deviated from the normal position, after the car 2 stops on the floor immediately above, Maintenance operation of the elevator is interrupted.

When the maintenance operation of the elevator is continued, the maintenance staff repeatedly performs the manual operation for opening and closing the car door 24 while sequentially stopping the car 2 one floor at a time. On the other hand, when the maintenance operation of the elevator is interrupted, an abnormality in the floor immediately below the floor on which the car 2 is landed is specified.

Next, the diagnostic operation of the diagnostic device 41 will be described. In the diagnostic device 41, when the car 2 is stopped on the floor and the speed of the car 2 becomes 0, or the car entrance 23 is open, it is determined that the car 2 is landing on the floor.

Thereafter, when the state of the door zone plate detector 28 is switched from detection to non-detection due to the movement of the car 2, the operation comparison unit of the diagnostic apparatus 41 determines that the car 2 has landed on the floor. The travel distance of the car 2 until the state of the door zone plate detector 28 switches from detection to non-detection is obtained, and the obtained travel distance is compared with a preset reference value, and the difference is calculated. Is done.

Thereafter, the diagnosis device 41 performs a diagnosis that the elevator is normal when the difference between the movement distance obtained by the calculation comparison unit and the reference value is smaller than a predetermined threshold value. A diagnosis that the elevator is abnormal is made when the difference is equal to or greater than a predetermined threshold.

In such an elevator apparatus, when the speed of the car 2 is 0 and / or when the car doorway 23 is open, the operation comparison unit of the diagnostic apparatus 41 causes the car 2 to be a floor. Since it is determined that the car 2 is landing on the floor, a dedicated level-specific signal is generated by the operation of the maintenance staff in order to confirm that the car 2 is landing on the floor. Without providing the signal generator, it is possible to diagnose whether or not the position of the door zone plate detector 28 relative to the door zone plate 27 when the car 2 is stopped is normal. Thereby, the number of parts can be reduced, and the whole elevator apparatus can be simplified. Therefore, it is possible to diagnose whether the position of the door zone plate detector 28 relative to the door zone plate 27 when the car 2 is stopped on the floor is normal, and to reduce the cost. Can do.

When adjusting the stop position of the car 2, it is possible to stop the car 2 many times while moving the car 2 little by little on the same floor. In this case, since the speed of the car 2 becomes zero many times, the landing of the car 2 may be erroneously determined. Therefore, in order to prevent an erroneous determination about the landing of the car 2, when the speed of the car 2 is repeatedly zeroed on the same floor, the car when the speed of the car 2 is finally zeroed. It may be determined that 2 has landed on the floor.

Also, when the car 2 is stopped, the car 2 may move little by little due to the weight of the person when getting on and off the person. In this case, the moving distance of the car 2 by the distance detection device may be erroneously determined. Therefore, in order to prevent erroneous determination of the travel distance of the car 2, it may be determined that the car 2 has landed on the floor when the car doorway 23 is first opened.

Embodiment 2. FIG.
In the first embodiment, diagnosis is performed by the diagnostic device 41 while the car 2 is moved by manual operation by the maintenance personnel. However, the car 2 is not automatically operated during the maintenance operation of the elevator. Diagnosis by the diagnostic device 41 may be performed while moving to.

In Embodiment 2, the maintenance staff gets into the car 2 from the landing, and then operates the destination floor button in the car 2 to perform call registration for all floors. Thereafter, the car 2 is automatically stopped in order from the lowest floor to the upper floor, and the position of the door zone plate detector 28 relative to the door zone plate 27 when the car 2 is stopped on the floor is normal. The diagnosis device 41 diagnoses whether or not there is. When the diagnosis result by the diagnosis device 41 is normal, the operation of the elevator is continued.

For example, when the position of the door zone plate detector 28 with respect to the door zone plate 27 is deviated from the normal position when the car 2 is stopped on the floor due to a decrease in braking force by the brake device 14 or the like. The diagnostic result by the diagnostic device 41 becomes abnormal. In this case, the operation of the elevator is interrupted. Other configurations and operations are the same as those in the first embodiment.

Thus, by performing the operation of automatically stopping the car 2 on the floor, it is possible to diagnose not only the position of the door zone plate 27 but also the presence or absence of an abnormality in the brake device 14 or the like.

Embodiment 3 FIG.
In each of the above embodiments, the movement distance of the car 2 is calculated and compared from when it is determined that the car 2 is landing on the floor to when the state of the door zone plate detector 28 is switched from detection to non-detection. The movement of the car 2 from when the state of the door zone plate detector 28 switches from non-detection to detection until it is determined that the car 2 is landing on the floor. The calculation comparison unit may obtain the distance.

That is, the car 2 from when the car 2 is moved and the detection of the door zone plate 27 by the door zone plate detector 28 switches from non-detection to detection until it is determined that the car 2 has landed on the next stop floor. The movement comparison unit may obtain the movement distance.

The movement distance of the car 2 obtained by the operation comparison unit is compared with a preset reference value, and the difference between the movement distance of the car 2 and the reference value is calculated by the operation comparison unit. Other configurations and operations are the same as those in the first embodiment.

Even in this case, the car 2 can be provided without providing a conventional dedicated signal generator for generating a level confirmation signal by the operation of the maintenance staff in order to confirm that the car 2 has landed on the floor. Can be diagnosed as to whether or not the position of the door zone plate detector 28 relative to the door zone plate 27 is normal.

Embodiment 4 FIG.
In this embodiment, a display device (indicator) that is a notification device that displays the diagnosis result of the diagnosis device 41 for each floor is provided in the car 2.

The operation of the elevator when the diagnosis by the diagnosis device 41 is performed is continued regardless of whether the diagnosis result by the diagnosis device 41 is normal or abnormal. Therefore, the diagnosis by the diagnosis device 41 is performed for all floors at once.

The display device receives information from the diagnostic device 41. The display device displays either normal or abnormal information, which is a diagnosis result, and each floor in association with each other. The result of diagnosis by the diagnosis device 41 is notified in the car 2 by display on the display device. Other configurations and operations are the same as those in the first embodiment.

In such an elevator apparatus, since the car 2 is provided with a display device for displaying the diagnosis result by the diagnosis device 41 for each floor, the elevators can be operated for all floors without interrupting the operation of the elevator. Diagnosis results can be confirmed. Accordingly, defects at a plurality of locations can be repaired in a lump, and maintenance work can be made more efficient.

In the above example, the diagnosis result by the diagnosis device 41 is displayed on the display device in the car 2, but the diagnosis result by the diagnosis device 41 from a speaker (notification device) provided in the car 2. May be notified by voice.

Embodiment 5 FIG.
In this embodiment, the diagnostic device 41 further includes a storage unit that stores a diagnosis result for each floor. The information of the diagnosis result accumulated in the storage unit can be rewritten when the elevator is operated and the diagnosis by the diagnosis device 41 is performed again.

The diagnosis device 41 outputs a normal operation prohibition command to the drive control device 40 when there is an abnormality in at least one of the diagnosis results for each floor. Further, the diagnosis device 41 stops outputting the normal operation prohibition command only when all the diagnosis results for each floor are normal.

The drive control device 40 prohibits the normal operation of the elevator when the normal operation prohibition command is received. Further, the prohibition of the normal operation of the elevator is canceled when the reception of the normal operation prohibition command by the drive control device 40 is stopped. Other configurations and operations are the same as those in the first embodiment.

In such an elevator apparatus, since the diagnostic apparatus 41 has a storage unit for storing the diagnosis result for each floor, the diagnosis result for all floors is confirmed without interrupting the operation of the elevator. be able to. Accordingly, defects at a plurality of locations can be repaired in a lump, and maintenance work can be made more efficient. In addition, by prohibiting the execution of normal operation unless the diagnosis results for each floor accumulated in the storage unit become normal, human errors (for example, missed repairs by maintenance personnel or missed diagnosis results by maintenance personnel) Occurrence of mistakes) can be prevented.

Embodiment 6 FIG.
In this embodiment, the diagnostic apparatus 41 includes a plurality (two in this example) of operation comparison units and a self-diagnosis unit that compares the calculation results of the operation comparison units.

The diagnostic device 41 is provided with an input unit for receiving information from each of the hoisting machine encoder 15, the door closing detector 25, and the door zone plate detector 28 for each of the operation comparison units. Each calculation comparison unit independently performs a calculation for diagnosis based on information received by different input units.

The self-diagnosis unit determines that the processing operation of the diagnostic device 41 is normal when the calculation results by the respective arithmetic comparison units match each other, and the processing operation of the diagnostic device 41 when the calculation results by the respective arithmetic comparison units differ from each other. It is judged that there is an abnormality. When the self-diagnosis unit determines that there is an abnormality, for example, the operation of the elevator is interrupted or a display indicating the abnormality of the diagnosis device 41 is performed. Other configurations and operations are the same as those in the first embodiment.

In such an elevator apparatus, the diagnostic apparatus 41 includes a plurality of calculation comparison units and a self-diagnosis unit that compares the calculation results of the calculation comparison units, thereby preventing erroneous diagnosis by the diagnosis device 41. Therefore, the reliability of diagnosis by the diagnosis device 41 can be improved.

In each of the above embodiments, the moving distance of the car 2 and the speed of the car 2 are obtained based on the information from the hoisting machine encoder 15, but the information from the governor encoder 21 is included in the information. Based on this, the moving distance of the car 2 and the speed of the car 2 may be obtained. In this case, the governor encoder 21 also serves as a speed detection device and a distance detection device.

In each of the above embodiments, the hoisting machine encoder 15 serves as both a speed detection device and a distance detection device. However, the speed detection device that detects the speed of the car 2 and the distance detection that detects the movement distance of the car 2. The devices may be independent of each other. For example, the hoisting machine encoder 15 may be a distance detection device, and the governor encoder 21 may be a speed detection device.

In each of the above embodiments, when the speed of the car 2 is 0 and / or when the car doorway 23 is open, the car 2 is landing on the floor. Although it is determined, it may be determined that the car 2 is landing on the floor only when the speed of the car 2 is 0, or the car entrance 23 is opened. It may be determined that the car 2 is landing on the floor only when Even if it does in this way, the position with respect to the door zone plate 27 of the door zone plate detector 28 when the cage | basket | car 2 has stopped on the floor is not provided, without providing an exclusive signal generator like the past. A diagnosis of whether or not can be made.

In each of the above embodiments, information from the door closing detector 25 for the car doorway 23 is sent to the diagnostic device 41, and it is detected whether the landing doorway is in a closed state. The information from the door closing detector for the landing entrance to be sent may be sent to the diagnostic device 41. Further, information from a door closing detector that detects whether or not each of the car entrance 23 and the landing entrance is in a closed state may be sent to the diagnosis device 41.

Moreover, in each said embodiment, although the door zone plate 27 is provided in the hoistway 1 and the door zone plate detector 28 is provided in the cage | basket | car 2, the door zone plate 27 is provided in the cage | basket | car 2, A plate detector 28 may be provided in the hoistway 1. In this case, the door zone plate detector 28 is arranged at a position corresponding to each floor.

In each of the above embodiments, the object of diagnosis by the diagnosis device 41 is the door zone position detection device 26 that detects whether or not the car 2 is in the door opening / closing zone, but the car floor and the landing floor A relevel zone position detection device that detects whether or not the car 2 is in a relevel zone in which the level difference between the two can be corrected may be a diagnosis target by the diagnosis device 41. In this case, the relevel zone position detection device includes a relevel zone plate (detected object) shorter than the door zone plate and a relevel zone plate detector (detected object detector) for detecting the relevel zone plate. Have. The relevel zone plate and the relevel zone plate detector are arranged to be shifted in the horizontal direction with respect to the door zone plate and the door zone plate detector.

In each of the above embodiments, when the car doorway 23 is open, it is determined that the car 2 is landing on the floor, but the door closing operation of the car door 24 is performed. When completed, it may be determined that the car 2 is landing on the floor. In this case, the car 2 is provided with a door closing detector for detecting whether or not the car entrance 23 is in a closed state. Further, whether or not the door closing operation of the car door 24 is completed is determined by the drive control device 40 based on information from the door closing detector.

1 hoistway, 2 cages, 15 hoisting machine encoder (distance detection device and speed detection device), 25 door closing detector, 26 door zone position detection device (position detection device), 27 door zone plate (detected body), 28 Door zone plate detector (detected object detector), 41 diagnostic device.

Claims

A detected object having a predetermined length and arranged along the direction of movement of the car; and a detected object detector for detecting the detected object; and the detected object and the detected object detector Any one is provided in the cage, and the other is a position detection device provided at a position in the hoistway corresponding to each of the plurality of floors;
A distance detecting device for detecting the moving distance of the car,
A stop detection device for detecting that the car is stopped, and when the car is stopped based on information from each of the position detection device, the distance detection device, and the stop detection device; A calculation comparison unit that obtains the movement distance of the car between when the detection of the detected object detector with respect to the body is switched and when the detection is switched, and compares the obtained movement distance with a preset reference value Diagnostic apparatus for diagnosing whether or not the position of the detected object detector with respect to the detected object is normal when the car is stopped on the floor, based on the calculation result by the operation comparison unit An elevator apparatus comprising:
The stop detection device has a speed detection device for detecting the speed of the car,
The elevator apparatus according to claim 1, wherein the diagnostic apparatus determines that the car is stopped on the floor when the speed of the car is zero.
The stop detection device has a door open detector that detects whether an elevator doorway that communicates the inside of the car and the landing is open,
The elevator apparatus according to claim 1 or 2, wherein the diagnostic apparatus determines that the car is stopped on the floor when the elevator doorway is open.
The elevator apparatus according to any one of claims 1 to 3, further comprising a notification device that is provided in the car and notifies a diagnosis result of the diagnosis device for each floor. .
The elevator apparatus according to any one of claims 1 to 4, wherein the diagnosis apparatus includes a storage unit that stores a diagnosis result for each floor.
6. The diagnostic apparatus according to claim 1, further comprising a plurality of the operation comparison units and a self-diagnosis unit that compares the calculation results of the operation comparison units. The elevator apparatus according to one item.