JP4539682B2 - Multi car elevator - Google Patents

Description

  The present invention relates to a multicar elevator having a plurality of cars per hoistway, and is particularly suitable for a degenerate operation with the remaining cars when one car breaks down.

  Conventionally, a circulating multi-car elevator that connects two upper and lower hoistways to form a circulation path and circulates and moves a plurality of cars is known and described in Patent Document 1.

  In addition, there are maintenance standby floors on the upper and lower floors of an omnidirectional multicar elevator where multiple cars move vertically and horizontally in two hoistways so that if one car breaks down, other cars A method of performing a degenerate operation by moving is described in Patent Document 2.

JP 2006-111408 A JP-A-6-263361

  In the above prior art, the circulation type multi-car elevator described in Patent Document 1 can move the hoistway between the uppermost floor and the lowermost floor. However, as shown in Patent Document 2, if a car that has failed on the upper or lower floor is retracted and a degenerate operation is performed, other normally operating cars cannot move up and down the hoistway at the upper or lower part.

  Therefore, if the conventional degeneration operation is applied to the circulation type multi-car elevator as it is, a car traveling in the same hoistway for each car can not stop on the floor where the car is stopped and its vicinity.

  Also, even in the hoistway on the side where there is no broken car, there are multiple cars in the same hoistway, so the upper car can not stop at the lowest floor and its vicinity because there are other cars below. The car in the lower part cannot stop at the top floor and its vicinity because there are other cars in the upper part.

  In addition, there is no car going straight between the top floor and the bottom floor, so like a double deck elevator with a two-story car and a one-shaft multi-car elevator with multiple cars in one hoistway, A single car will not be able to transport passengers to all floors.

  Further, if the failed car is moved to the maintenance standby floor provided on the upper and lower floors, the operation of all the cars must be stopped when the failure car cannot be moved from the position other than the maintenance standby floor.

  An object of the present invention is to enable efficient degenerate operation using the remaining normally operating car when a multi-car elevator breaks down and transport passengers to all floors.

In order to solve the above-mentioned problems, the present invention connects two upper and lower hoistways to move the car to the hoistway, and a plurality of the cars can be circulated and are in a symmetrical positional relationship. In the counter car balance type multi-car elevator having a plurality of sets driven by connecting the cars with ropes, the two hoistways are paired with the same length and can be stopped at the intermediate floor. Shuttle elevators attached to two hoistways, failure detection means for detecting the failure and position of the car, and, when a failure is detected, in a degenerate operation that operates the car in which no failure is detected An operation mode switching means for switching, and a car stop floor assigning means for allocating a stop floor of each car between the top floor or the bottom floor and the failed position, and switching to the degenerate operation. The stop floor is assigned to a floor below the intermediate floor for the car of one of the hoistways, and the stop floor is assigned to a floor above the intermediate floor for the car of the other hoistway. When the hall call is generated when the operation is switched to the degenerate operation, the car whose floor called by the hall call becomes the stop floor is assigned and operated.

  According to the present invention, even if some of the cars constituting the multi-car elevator break down, the normal car can be moved between the top floor or the bottom floor and the position where the malfunction occurred using another normally operating car. Since the operation is performed by assigning the stop floor, passengers can be transported efficiently without stopping the operation of all the cars even in the event of a failure.

  An embodiment will be described with reference to the block diagram shown in FIG.

  The control device 1 operates the two cars 3a and 3c in the left hoistway 2L and the one car 3b in the right hoistway 2R.

  A hall call button 4 for calling an elevator is installed on each floor, and each car 3 includes a car call button 5 for a passenger to designate a destination floor.

  The control device 1 includes a failure detection unit 6, an operation mode switching unit 7, a car assignment hall call registration unit 8, a car call registration unit 9, a car assignment hall call registration unit 10 during degenerate operation, a car stop floor assignment unit 11, a route It has a search unit 12, a transfer floor registration unit 13, a transfer car transfer floor registration unit 14, a transfer car destination floor registration unit 15, and a car call registration unit 16.

  The control device 1 issues a command to the car control device 17 of each car 3 and operates each car 3. In the normal operation mode, the car assignment hall call registration unit 8 assigns the car 1 according to the hall call from all the cars 3a to 3c. When the assignment is determined, the control device 1 registers the destination floor in the corresponding car control device 17 and dispatches the car 3 to the called floor. When the car call button 5 in the car 3 is pressed and the destination floor is determined, the car call registration unit 9 registers the destination floor as a destination floor in the car control device 17. The car 3 sequentially stops at the destination floor registered in the car control device 17.

  The failure detection unit detects a failure of the car 3 and its position using a safety signal generated by each car 3 and a position detection device (not shown). The safety signal is issued when various safety devices such as an emergency stop of the car 3 are activated. The position of the car 3 is detected by an encoder or the like attached to the drive motor.

  When the failure detection unit 6 detects the car 3 that is stopped due to a failure or the like, the operation mode switching unit 7 switches to the degenerate operation. It is assumed that the first car 3a is below the left hoistway 2L, the second car 3b is on the right hoistway 2R, and the third car 3c is malfunctioning above the first car 3a. . The car stop floor assignment unit 11 determines and assigns the stop floor of each car 3 from the position of the broken car 3c. In this example, it is assumed that the third car 3c has failed between the fourth floor and the fifth floor.

  Since the broken car 3c cannot be stopped anywhere, there is no stop floor allocation. Since the first car 3a under the broken car 3c can move from the first floor to the third floor, the first to third floors are assigned to the stop floors. Since the second car 3b of the right hoistway 2R has no obstacle, the same 1st to 6th floors as in the normal operation are assigned to the stop floors.

  A case where the hall call button 4 on the first floor is pressed will be described. The car assignment hall call registration unit 10 at the time of degenerate operation refers to the stop floor assignment of each car 3 and makes the car assigned to the stop floor the candidate for the car assignment. The first car 3a and the second car 3b are candidates, and the first car 3a that is close to the first floor and has a low waiting time is assigned. When the car assignment is determined, the destination floor is registered in the car control device 17a as in the normal operation.

  Next, the case where the destination floor by the car call button 5a of the first car 3a is the second floor will be described. The route search unit 12 refers to the stop floor allocation of the first car 3a and determines that the first car 3a can stop at the second floor. Then, the car call registration unit 16 registers the destination floor as it is in the destination floor of the first car 3a.

  As another example, the case where the destination floor by the car call button 5a of the first car 3a is the fifth floor will be described. Since the stop floor allocation of the first car 3a is the first to third floors, the route search unit 12 determines that a transfer is necessary. Then, the car 3 in which the first car 3a and the stop floor overlap and the stop floor is assigned to the destination floor is searched. That is, the second car 3b corresponds to this. Next, a transfer floor is determined in consideration of efficiency from among the stop floors where the first car 3a and the second car 3b overlap.

  The first method for determining the transfer floor is to first calculate the expected travel time until the first car 3a arrives at the transfer candidate floor and the expected travel time until the second car 3b arrives at the transfer candidate floor. To do. Then, the predicted travel times of both are compared, and the floor with the smallest time difference is set as the transfer floor.

  In a simple example as shown in FIG. 1, it can be understood that the intermediate floor between the first floor and the fifth floor may be set as the transfer floor intuitively. However, in actuality, it is necessary to calculate in consideration of stopping at an intermediate floor by other passengers of the first car 3a and the second car 3b, and a difference in driving speed.

  In the second method of setting the transfer floor, the transfer floor is determined by giving priority to the total travel time from the departure floor to the destination floor over the waiting time at the time of transfer.

  For example, when the second car 3b is operated at a higher speed than the first car 3a, the total moving time is shorter when the second car 3b moves on the second car 3b for a longer distance. Therefore, the expected travel time for the first car 3a to move from the departure floor to the transfer candidate floor and the expected travel time for the second car 3b to move from the transfer candidate floor to the destination floor are calculated, and the total travel time is shortened. Set the transfer candidate floor as the transfer floor. And according to this method, although the waiting time at the time of transfer is not necessarily the shortest, it can arrive at the destination floor in the shortest time.

  The route search unit 12 determines the transfer floor by any of the above. Then, the transfer floor registration unit 13 sets a transfer floor in the car control device 17a of the first car 3a as the destination floor of the first car 3a. Furthermore, the transfer car transfer floor registration unit 14 registers the transfer floor as the destination floor in the car control device 17b of the second car 3b, and the transfer car destination floor registration unit 15 stores the transfer floor in the car control device 17b of the second car 3b. The destination floor is registered so that the second car 3b stops at the transfer floor and then moves to the destination floor.

  In the case of a transfer, after the car call button 5a is pressed in the first car 3a, it is necessary to clearly indicate the transfer floor to the passengers and prompt the transfer. Therefore, the transfer floor is also displayed together with the destination display in the car 3a. Further, when stopping at the transfer floor, it is better to provide transfer guidance by voice.

  Further, when the second car 3b arrives at the transfer floor, the destination floor may be displayed or voiced. Then, the button on the destination floor of the car call button 5b in the second car 3b may be turned on to indicate that it has been registered.

  Further, the second car 3b opens the door after the first car 3a arrives at the transfer floor, and after a certain period of time, closes the door and moves to the destination floor.

  Next, a basic structure of a counterbalanced circulation type multi-car elevator will be described with reference to FIG.

  A plurality of pulleys 18 are vertically arranged in a circular arc shape to form a circulation rope 19, and two sets of circulation ropes 19 </ b> F and R are arranged in front of and behind the car 3. Two rope fastening portions 20F, R are mounted diagonally on the top of the car 3, and the car 3 is fixed to the front and rear circulation ropes 19F, R.

  In FIG. 2, the front and rear circulation ropes 19F and R are each drawn by one line, but in actuality, they are constituted by a plurality of circulation ropes 19F and R. And each cage | basket | car 3 is fixed to the circulation ropes 19F and R which are each different. Two cars 3 are fixed to the opposite positions of the circulation rope 19 so that the opponent cars balance each other and work as weights to cancel the weight of the car 3.

  The upper drive pulley 18U is shifted in the front-rear direction, and different circulation ropes 19 are wound around each. By moving each drive pulley 18U with each drive motor 21, each circulation rope 19 is moved individually. As a result, the plurality of cars 3 can be driven independently.

  While the car 3 is fixed to the circulation rope 19, the car 3 moves to the adjacent hoistway 2 at the uppermost part and the lowermost reversal part and moves in a circular manner.

  If there is a form that does not have a reversing part on the top and bottom, it becomes a counter-balanced one-shaft multi-car elevator.

  In the above-described circulation type multi-car elevator, the degenerate operation at the time of failure will be described.

  In a counter-balanced circulating multi-car elevator, when one car 3c stops due to a failure, the opponent car 3d located on the opposite side is fixed to the same rope and cannot move. Therefore, when moving from the lowermost floor to the uppermost floor, there is no car 3 that can be moved directly, and it is necessary to change to the car 3 of the hoistway 2 that is different on the intermediate floor.

The case where the total number of service floors is an odd number will be described below with reference to FIG.

  When the service floor is an odd number, the opponent car 3b fixed to the same rope as the first car 3a always stops at the same intermediate floor M structurally. Therefore, if the opponent's car 3b is the second car 3b, the car is surely attached on the intermediate floor M, and the transfer can be performed smoothly. Therefore, the route search block 12 does not need to calculate the expected travel time, and the transfer floor may be set to the intermediate floor M. FIG. 3 shows an example of moving from the lowest floor A to the B floor above the C floor where the failed car 3c is stopped. In this case, the car 3a on the left hoistway 2L may be boarded at the lowest floor A, and the car 3b may be transferred to the opponent car 3b that simultaneously arrives at the adjacent hoistway 2R at the intermediate floor M and moved to the B floor.

  A plurality of cars 3 may be evacuated together above or below the intermediate floor. For example, the car 3a that moves from the lowest floor to the intermediate floor M in the left hoistway 2L may be left, and the other cars 3 may be retreated above the intermediate floor M of the left hoistway 2L. At this time, the car 3 connected to the same rope is gathered below the intermediate floor M in the right hoistway 2R. The first car 3a is serviced in the left hoistway 2L with no obstructive car 3 from the lowermost floor to the intermediate floor M, and similarly, the second car 3b is in the right hoistway 2R from the intermediate floor M to the uppermost. Serving up to the floor.

  Next, a case where the car 3c stops at the intermediate floor M due to a failure or the like will be described.

  In this case, there is no other car 3 that can be stopped at the intermediate floor M by the left and right hoistways 2, and transfer is not possible when it is desired to move from a floor below the intermediate floor M to a floor above the intermediate floor M. Therefore, another elevator 22 serving the intermediate floor is arranged so that it can be transferred. FIG. 3 shows an example in which a shuttle elevator 22 is provided. And even if it is a non-stop floor of the shuttle elevator 22, the door 23 is provided in an intermediate | middle part floor, and the car 3i of the shuttle elevator 22 can be stopped on these floors at the time of degeneration operation.

  In the multi-car elevator, it is necessary to provide a margin in the vertical distance between the two cars 3 so that the upper and lower cars 3 do not collide in an emergency.

  If the floor height is high and the interval between the intermediate floor M and the upper and lower floors is sufficiently wide so that the car 3 can be stopped at the first floor distance, even if a failure occurs in the intermediate floor, the other car 3 is 1 than the intermediate floor M. You can stop downstairs and upstairs. Therefore, in this case, the shuttle elevator 22 is provided with three doors 23 so as to be stopped at the intermediate floor M and the third floor above and below the first floor.

  When the floor height is low and the car 3 can only be stopped at intervals of two floors in order to ensure safety, the floor where the circulation type multicar elevator cannot be stopped is the intermediate floor M and the upper and lower three floors. Therefore, the middle floor to be serviced by another elevator 22 such as a shuttle elevator is set to the fifth floor.

  With the above configuration, when going from the upper and lower areas of the intermediate floor M to the intermediate floor M, it is possible to go to the destination floor with a single transfer. However, when going to the upper and lower areas across the intermediate floor M, it is necessary to change twice. However, the second transfer is efficient because the waiting time can be eliminated.

  Next, a case where the car 3 stops at the reversing part due to a failure or the like will be described. That is, a case will be described in which the car 3 stops near the middle of the left hoistway 2L and the right hoistway 2R on the lowermost floor A and the uppermost floor D.

  In this case, the other cars 3 cannot be stopped at the lowermost floor A and the uppermost floor D in both the left and right hoistways 2. Therefore, another elevator 24 serving the lowermost floor A and the uppermost floor D is arranged so that it can be transferred to the lowermost floor A and the uppermost floor D.

  When the floor height of the lowest floor A and the highest floor D is high and the other car 3 can be stopped at the first floor of the lowermost floor A and the first floor of the uppermost floor D, the other elevator 24 and the second floor You only need to overlap the floor. In FIG. 3, the uppermost floor of the multi-car elevator 24L in the lower zone is arranged to overlap the second floor, and the lower floor of the multi-car elevator 24U in the upper zone is arranged to overlap the second floor.

  As a result, even if a failure occurs in the reversing part of any multi-car elevator 24, the user can get on the car 3 of the multi-car elevator 24 in another zone and move to the floor blocked by the car 3. .

  In addition, when the floor height is low and the car 3 can be stopped only at the second floor interval, the multi-car elevators 24 in other zones are arranged so as to overlap the third floor.

Hereinafter, a method for transferring to an intermediate floor when the total number of service floors is an even number will be described with reference to FIG.

  When the service floor is an even number, the cars 3a and 3b connected to the same rope cannot be stopped on the same floor. Therefore, the car 3f connected to a different rope is selected as the second car 3. If the floor heights of the middle two floors M1, M2 are large and the stop interval is sufficiently wide, the cages 3 of different ropes can be stopped at the first floor interval. Therefore, one of the intermediate second floors M1 and M2 may be used as a transfer floor. In FIG. 4, board the car 3a on the left hoistway 2L from the lowest floor A, move to the intermediate floor M1, change to the second car 3f connected to another rope on the right hoistway 2R, and move to the B floor. The example which moves to the same floor as the car 3c in failure is shown. At this time, the opponent car 1b connected to the same rope as the first car 3a and the opponent car 3e connected to the same rope as the second car 3f move to the M2 floor at the time of transfer. This is because the two cars 3 connected by the same rope always have a symmetrical positional relationship.

  If the car 3 can be stopped only at the second floor interval in order to secure a sufficient stop interval, a transfer floor is set on a floor one or more floors away from the middle two floors, and the first car 3a The second car 3f connected to a different rope is stopped on the same transfer floor.

  Next, a case where the car 3c is stopped at the intermediate floors M1 and M2 due to a failure or the like will be described.

  Similarly to the case where the service floor is an odd number, another elevator 22 serving the intermediate floor is arranged. In FIG. 4, it is possible to change to the shuttle elevator 22.

  Even if the floor height is high and the distance between the intermediate floors M1 and M2 and the upper and lower floors is wide enough, if the car 3c breaks down at the middle part of the M1 floor and the M2 floor, the opponent car 3d is also between the M1 floor and the M2 floor. The other car 3 is stopped at the M1 floor and the M2 floor by the left and right hoistways 2. Therefore, in this case, the shuttle elevator 22 is provided with four doors 23 so as to be stopped at the intermediate floors M1 and M2 and the upper and lower first floors.

  When the car 3 is stopped at intervals of the second floor to ensure safety, the floor where the circulation type multicar elevator cannot be stopped is the fourth floor. Therefore, the middle floor to be serviced by another elevator 22 such as a shuttle elevator is set to the sixth floor.

  Although the circulation type multicar elevator has been described above, the same may be done when the one-shaft multicar elevator fails.

  In addition, when there are a plurality of emergency elevators, the operation mode of some emergency elevators may be switched during the degenerate operation, and the service floor of the malfunctioning multi-car elevator 24M may be preferentially serviced. Then, passengers can be efficiently transported to all floors without using the shuttle elevator 22 and multi-car elevators 24L and 24U in other zones.

The block diagram by one embodiment of this invention. The perspective view which shows the circulation type multi-car elevator which is one embodiment. The figure which shows the relationship between each elevator which is one embodiment, and each floor. The figure which shows the relationship between each elevator which is other embodiment, and each floor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Control apparatus 2 Hoistway 3 Car 4 Hall call button 5 Car call button 18 Pulley 19 Circulation rope 20 Rope fastening part 21 Drive motor 22 Other elevator (shuttle elevator)
23 Door 24 Other elevator (multi-car elevator)

Claims (3)

The upper and lower parts of two hoistways are connected to move the car to each other hoistway, and a plurality of the cars can be circulated and driven by connecting the cars in a symmetrical positional relationship with a rope. In the counter car-balanced multi-car elevator with multiple pairs ,
The two hoistways are paired with the same length, and can be stopped at an intermediate floor thereof, and a shuttle elevator attached to the two hoistways,
Failure detection means for detecting a failure of the cage and a location where the failure occurred;
When a failure is detected, an operation mode switching means for switching to a degenerate operation that operates the car in which no failure is detected;
A car stop floor assigning means for assigning a stop floor of each of the cars between the top floor or the bottom floor and the location of the failure;
And when switched to the degenerate operation,
For the car of one of the hoistways, assign the stop floor to a floor below the intermediate floor, and for the car of the other hoistway, assign a stop floor to a floor above the intermediate floor,
When the hall call is generated after switching to the degenerate operation, the multi-car elevator is assigned to operate the car whose floor called by the hall call becomes the stop floor.   In the thing of Claim 1, when a car call occurs at the time of the degenerate operation, it is determined whether the destination floor by the car call is assigned to the stop floor, and if it is not assigned, the destination floor is A multi-car elevator characterized by searching for another car to which a stop floor is assigned and determining a transfer floor.   2. The car according to claim 1, wherein when a car call is generated during the degenerate operation, a car in which a destination floor by the car call is assigned as the stop floor is searched, and an overlapped stop in each searched car A multi-car elevator characterized in that a transfer floor is determined as a transfer candidate floor, and the transfer floor is determined so that the travel time to the destination floor is the shortest when the transfer is made on the transfer candidate floor.

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