JP3035111B2 - Control method of lifting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator apparatus for operating a plurality of cars in the same shaft, and more particularly, to a circulation apparatus having a shaft dedicated to both upper and lower directions and operating the car by circulating the cars through these shafts. The present invention relates to a control method of a lift device for controlling the operation of a car of a type lift device.

[0002]

2. Description of the Related Art In general, elevators are used as a means of moving vertically in a building. However, in recent years, the number of elevators required to secure transportation capacity has increased with the rise of buildings, and the number of elevators has been increasing. Available floor space is reduced. For this reason, it is considered that a plurality of cars are operated in the same shaft to secure necessary transportation capacity.

[0003] As a prior art relating to such an elevator apparatus for operating a plurality of cars in the same shaft, for example, a technique described in Japanese Patent Application Laid-Open No. 62-275987 is known.

[0004] Further, as a prior art relating to a processing at the time of a car failure in a circulation type elevator, for example, Japanese Patent Laid-Open No.
A technique described in, for example, Japanese Unexamined Patent Publication No. 159993 is known.

[0005] In this prior art, an operation is performed without a broken car, and a standby hatch is provided at an extension of a traversing path for running the car in the lateral direction, and the broken car is provided. Is stored in this hatch to prevent the car from being stuck in the shaft.

[0006]

In general, a lifting device for operating a plurality of elevators in the same shaft includes a free-running system in which a self-propelled type is free to pass, and two shafts for upward and downward use. There is a circulation type used exclusively for each. And, compared with a self-propelled lifting device, the circulation type lifting device drives the car by an annular rope stretched between the top floor and the lowest floor, so the driving device is attached to the car itself. It has the feature that it is easy to realize because there is no need to provide it.

However, in this method, since the preceding car cannot be overtaken, if the succeeding car catches up while the preceding car is stopped on the middle floor, a plurality of cars are connected in a daisy chain. It is a dumpling state, which significantly lowers the serviceability.

On the other hand, the former prior art described above is:
The present invention relates to a method of realizing a device configuration for operating multiple elevators in the same shaft, and does not consider the operation method, so that efficient operation can be performed to reduce waiting time for passengers. Is difficult.

The above-mentioned prior art relates to a circulating type traveling apparatus, and is an improvement for preventing a shaft from being clogged when one of a plurality of cars fails. However, this prior art,
If the broken car must be moved to the standby hatch and the car becomes immobile while traveling,
There is a problem that there is no way to deal with it.

[0010] An object of the present invention is to solve the above-mentioned problems of the prior art, and to apply the present invention to a lifting / lowering apparatus for operating a plurality of cars in the same shaft, particularly to a circulation type lifting / lowering apparatus in which a vertical shaft is divided. In addition, it is possible to reduce the waiting time in the hall and the round trip time, and to secure a transport capacity equal to or higher than that of a single elevator even in the event of a failure that the car can not move in the shaft It is an object of the present invention to provide a control method of a lifting device capable of performing the above.

[0011]

SUMMARY OF THE INVENTION According to the present invention, the object is to solve the problem that when all the cars in the same shaft are concentrated on one shaft, the car is crowded. After detecting the crowded state and the car that was in charge of the service to the vacant side shaft finally arrived at the end floor, the inside of the car became unmanned, and then the vacant shaft in that car was reversed. , By responding to calls in the direction of travel of the shaft.

[0012] Further, the above object can be attained by using a shaft on the other side so that at least a single elevator can be operated when a car breaks down and is clogged in the middle of a shaft. Is done.

[0013]

The car moves a dedicated shaft in the up and down directions by the driving means. The lateral movement means of the car is provided on the upper and lower floors, and moves the car from one shaft to the other shaft. The operation control means allocates a car to be serviced to the generated hall call, and performs the service by operating the car and the driving device.

The operation control means has an interval measuring means for measuring a temporal and spatial interval between the cars, and the assignment control means based on a position where each hall call is generated and a position of each car. Decide which car will serve the call. Further, the operation control means has a crowded state detecting means for detecting the crowded state of the car based on the interval between the cars measured by the interval measuring means, and when the crowded state detecting means detects the crowded state, The assignment control means causes the rearmost car after the end-floor service is performed to reverse the shaft using the driving means.

According to the present invention, as described above, the crowded state of the cars can be eliminated, and even if a failure occurs in the cars, a service equivalent to at least an elevator having a single car can be provided.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for controlling a lifting device according to the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram showing the overall configuration of one embodiment of the present invention, FIG. 2 is a flowchart for explaining the operation of one embodiment of the present invention, and FIG. 3 is a diagram for explaining the movement of a car. . 1 and 3, 1a to 1d denote a car,
2a to 2d are driving devices, 3 is an operation control device, 5a to 5d
A car call button, 6a to 6d are car control devices, 31 is a hall call collecting means, 32 is a car information collecting means, 33 is an interval measuring means, 34 is a dense state detecting means, 35 is an assignment controlling means, 41 to 4n Is a hall call button.

The lifting device according to one embodiment of the present invention is shown in FIG.
As shown in FIG. 5, a plurality of cars 1a to 1d, and driving devices 2a and 2d corresponding to cars for driving these cars,
Car control devices 6a to 6d for controlling driving of the car
An operation control device 3 for controlling the operation of the entire car,
Each floor hall is provided with hall call buttons 41 to 4n.

The cars 1a to 1d having the car call buttons 5a to 5d are arranged in one shaft constituted by connecting dedicated shafts for ascending and descending at the upper and lower floors. , Are driven by driving devices 2a to 2d controlled by the car control devices 6a to 6d.

The operation control device 3 comprises a hall call collecting means 3
1. It comprises a car information collecting means 32, an interval measuring means 33, a crowded state detecting means 34, and an assignment control means 35, and controls the operation of the entire lifting device.

The hall call collecting means 31 collects information from the hall call buttons 41 to 4n installed in the halls on each floor, and the car information collecting means 32 collects information on each of the cars 1a to 1d.
And information on the car from the car call buttons 5a to 5d. The allocation control means 35 and the interval measuring means 33 receive the hall call information and the car call information collected by the hall call collecting means 31 and the car information collecting means 32, and the interval measuring means 33 transmits the information from the car call information collecting means 32. The interval between the cars is measured using the position information of each car, and the assignment control means 35a controls the assignment of the car to the hall call.

The dense state detecting means 34 is provided with the distance measuring means 3.
The congestion of each car is determined from the measured interval between the three cars, and the congestion is given to the assignment control device 35. The assignment control device 35 detects that the given density exceeds a predetermined value, and assigns a call for servicing a shaft in the opposite direction to the last car in the car group, and the car When the last car of the group has serviced the end floor, one of the car control devices 6a to 6d corresponding to the car has a corresponding drive device 2a to 2d.
, The last car to reverse its shaft to service hall calls.

Next, the operation of the embodiment of the present invention configured as described above will be described with reference to the flowchart shown in FIG.

(1) When a hall call is generated, first, the hall call collecting means 31 receives this hall call, the interval measuring means 33 calculates the interval between the cars, and calculates the interval between the cars. Based on this, the congestion state detecting means 34 determines the congestion degree of the car (steps 201 to 2).
03).

(2) The allocation control means 35 checks whether or not the degree of congestion of the car from the congestion state detecting means 34 exceeds a predetermined value, and if not, performs normal call allocation and allocates the call. Have the car perform the service. The normal assignment means, for example, in the case of a minimum waiting time assignment, assigning a car having a minimum estimated waiting time when each car is assigned to a hall call as a service car, and a maximum waiting time. In the case of the minimum time assignment, the car having the smallest maximum hall call value for each car is assigned as the service car (steps 204 and 205).

(3) If it is determined in step 204 that the density exceeds a predetermined value, the generated hall call is
It is checked whether or not the hall call is in the same direction as the direction in which the shaft in which the car group exists is served.If the call is in the direction in which the shaft in which the car group exists serves, the normal call assignment similar to the above is performed. Perform (step 206,
205).

(4) If the generated hall call is a call in the opposite direction to the service direction of the shaft in which the car group exists in the determination in step 206, the hall call is sent to the last car in the car group. A hall call is assigned (step 207).

(5) One of the car control devices 6a to 6d corresponding to the rearmost car has the rearmost car of the car group service the end floor, and then the driving device controls the rearmost car. And the service for the hall call is performed (steps 208 and 209).

FIG. 3 shows a specific example of the movement of the car according to the above-described embodiment of the present invention, which will be described next.

FIG. 3 (a) is a schematic view showing an example of a case where cars are dispersed and operated in a circulating elevating device having an ascending shaft and a descending shaft. When a call occurs, a normal call assignment service is performed by the processing of steps 204 and 205 in the flow described above.

With this normal call assignment, when a car is operated by adopting a conventional assignment method such as a minimum waiting time method, the number of passengers in a certain car is large, the number of stops is large, or some sort of stop is performed. The downtime may be prolonged for a reason. Then, as shown in FIG. 3 (b), the cars are concentrated on one shaft, in the illustrated example, the up shaft, and the subsequent car cannot overtake the preceding car. In the case of the illustrated example, if the car A stops, the following car must be stopped until the preceding car A moves regardless of the presence or absence of a passenger.

For this reason, in particular, the call in the direction opposite to the direction in which the shaft in which the car group is serviced, in this case, the call in the down direction has a long wait, and the time required for the car to make one round up and down increases the time. Therefore, users accumulate during that time, and the number of stops and the stop time are further lengthened by those users.

One embodiment of the present invention described above is shown in FIG.
As shown in FIG. 3, when the cars are concentrated on one shaft, as shown in FIG. 3 (c), the last car in the car group, in this case, car E serves the end floor. After the car is emptied, the car E is caused to reverse its shaft so as to provide a service for a hall call in a direction opposite to the traveling direction of the group of cars densely packed in the car E.

According to the above-described embodiment of the present invention, it is possible to reduce the waiting time for a hall call in the direction opposite to the crowded car group and to eliminate the crowded state of the car. And the round-trip time of the entire car can be reduced. Further, according to the above-described embodiment of the present invention, there is no other car on the shaft going in the reverse direction, and sufficient safety can be secured.

The above-described embodiment of the present invention can also serve a hall call in the same direction as a group of cars in a dense group of cars when the shaft is long.

FIG. 4 is a diagram for explaining an operation example in the case of providing a service for a hall call in the same direction with the same car group and the same shaft when the shaft is long, and FIG. 5 is a flowchart for explaining the control operation in that case. It is.

In the case where the shafts are long, if the crowded state of the car group occurs behind in the traveling direction of each shaft, for example,
As shown in FIG. 4 (a), if it occurs on the lower floor of the ascending shaft, a long wait may occur even at a hall call on the upper floor in the traveling direction of the car group. In such a case, the embodiment of the present invention, in such a case, as shown in FIG. 4 (b), calls near the end floor in the opposite direction to the last car E after the end floor service, that is, the car group. Allocate a long-waiting hall call that is occurring in the ascending direction on the upper floor of the ascending shaft where the crowding condition occurs. By allowing the call to be serviced, the waiting time for such a call can be reduced.

In this case, the position at which the car A at the head of the car group moves is predicted until the last car E reaches the hall call occurrence floor, and this predicted position is referred to as the occurrence hall call. Check that they are separated by more than the specified value,
It is necessary to ensure safety.

Next, an example of the control operation in such a case will be described with reference to the flow chart shown in FIG. The flow in this case will be described with reference to FIG. 2 except that the processing of steps 204 and 206 for determining whether or not the service can be executed in the reverse direction based on the direction determination of the flow described with reference to FIG. 2 replaces the processing of steps 501 to 504. Since this is the same as described above, only the changed part will be described here.

(1) After the calculation of the density of the cars in step 203 is completed, the assignment control means 35 sets the last car E of the group of cars to which the call is to be assigned.
Calculates the arrival time to reach the generated hall floor (step 501).

(2) Next, the allocation control means 35 checks the position where the leading car A arrives within the arrival time calculated in step 501 by calculation (step 50).
2).

(3) The allocation control means 35 further obtains the distance between the arrival position of the first car checked in step 502 and the hall call occurrence floor (step 50).
3).

(4) The assignment control means 35
It is checked whether or not the distance obtained in 03 is equal to or greater than a predetermined value within a range where the car does not collide, and whether or not the density is equal to or greater than a predetermined value. A normal assignment process is performed (steps 504 and 20).
5).

(5) If it is determined in step 504 that the distance is equal to or greater than a predetermined value which is a range in which the car does not collide, and that the density is equal to or greater than the predetermined value, step 207
In the same manner as described with reference to FIG. 2, the hall call is assigned to the last car in the car group, and the process proceeds.

As described above, according to one embodiment of the present invention, when the present invention is applied to a long shaft, that is, an elevator of a high-rise building, the same direction of the same car and the same shaft as the dense car group is used. Can be serviced for hall calls, and the waiting time for such calls can be reduced.

In the operation example of the embodiment of the present invention described above, the congestion of the car is calculated, and when the congestion reaches a predetermined value, the last car in the car group is moved backward. It has been described that the service is provided for the hall call in the opposite direction of the shaft different from the car group, or for the hall call in the same direction from the floor separated from the crowded car group by a predetermined value or more. According to an embodiment of the present invention, a service for a call in the opposite direction can be provided by simpler control without calculating the density of the car.

FIG. 6 is a flowchart for explaining an example of the control operation in this case, and is a flow chart showing an example of an operation for performing control by detecting that the car is biased to one shaft side.

In this example, after a hall call occurs, it is checked in step 601 whether all cars are concentrated on one shaft.
At step 05, the normal call allocation process is performed, and when the call is concentrated, the service for the call in the reverse direction is executed by the process similar to that described with reference to FIG. 2 from step 207.

According to one embodiment of the present invention which performs the above-described operation, the direction of the leading car of the crowded car group is reversed while the last car is running backward. However, it is not necessary to calculate the density of the car group, and the service for the call in the reverse direction can be provided by simple control.

FIG. 7 is a flow chart for explaining another operation example in which the density is not calculated. In this example, in addition to the control described with reference to FIG. 6 for detecting that the car is deviated to one shaft side, the control is performed in consideration of the waiting time of the hall call.

In this example, the assignment control means 35 determines that the car has concentrated on one shaft side in step 6.
After the determination at 01, the waiting time until the leading car of the car group services the generated hall call is calculated at step 701, and it is determined at step 701 whether or not the predicted waiting time is equal to or less than a predetermined value. At 702, the result is shown in FIG.
Step 205 or Step 2
07 and execute those processes.

According to the embodiment of the present invention which performs the above-described operation, it is not necessary to calculate the density of the car, and the reverse is performed by simple control, as in the case of the operation example described with reference to FIG. It is possible to provide a service for the call in the direction, and by checking whether or not the predicted waiting time of the leading car is equal to or more than a predetermined value, it is possible to confirm in advance that the leading car has not been reversed. It is possible to prevent a stop of the leading car for avoiding the vehicle and to perform an efficient operation.

FIG. 8 is a diagram for explaining the movement of the car at the time of failure. Hereinafter, the operation of one embodiment of the present invention when one of the cars becomes inoperable due to a failure will be described.

In the case of the circulation type lifting / lowering device, if one car cannot move due to a failure or the like while traveling on the shaft,
As shown in FIG. 8A, the subsequent cars are seized one after another, so that the service cannot be performed. FIG.
In the example shown in (a), when car A becomes inoperable due to a failure in the up shaft, subsequent cars B, C, and D also become inoperable, and car E enters the up shaft. It shows an example where the operation is disabled.

In this case, one embodiment of the present invention is shown in FIG.
As shown in (b), the cars B to E other than the failed car A have their shafts made reversible, and are turned back and forth between the floors before and after the failed car A.
This allows one embodiment of the present invention to continue to service calls.

In such a car operation, there are some floors that cannot be reached depending on the car, so that there is a possibility that the user will be confused. To prevent this, in one embodiment of the present invention, as shown in FIG. 8C, the cars B, C, and D are put out of service, while the transport efficiency is reduced.
It may be arranged such that only the stand is operated and the car E is operated by using the car E as an independent elevator.

[0057]

As described above, according to the present invention, in a circulating type elevator apparatus having a vertical dedicated shaft and operating a plurality of cars in the same shaft, the cars are densely packed and It is possible to reduce the occurrence of unnecessary stop due to the stop of the car, shorten the waiting time in the hall and shorten the round trip time of the car, and it is possible to provide good service. . Further, according to the present invention, even when a car breaks down in a shaft and becomes immovable, it is possible to secure a transport capacity equal to or higher than that of a single elevator.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the overall configuration of an embodiment of the present invention.

FIG. 2 is a flowchart illustrating the operation of one embodiment of the present invention.

FIG. 3 is a diagram for explaining the movement of the car by the operation of FIG. 2;

FIG. 4 is a diagram illustrating an operation example of a car when a shaft is long.

FIG. 5 is a flowchart illustrating a control operation in the case of FIG. 4;

FIG. 6 is a flowchart illustrating an operation example in which density is not calculated.

FIG. 7 is a flowchart illustrating another operation example in which the density is not calculated.

FIG. 8 is a diagram illustrating the movement of a car when one of the cars has failed and cannot be driven.

[Explanation of symbols]

 1a to 1d car 2a to 2d drive device 3 operation control device 5a to 5d car call button 6a to 6d car control device 31 hall call collecting means 32 car information collecting means 33 interval measuring means 34 dense state detecting means 35 allocation controlling means 37 Limit value determination means 41-4n Hall call button

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-275987 (JP, A) JP-A-4-159999 (JP, A) JP-A-3-200677 (JP, A) JP-A-3-3 272980 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B66B 1/00-9/193

Claims (7)

(57) [Claims] 1. A method of controlling an elevator device having a dedicated shaft in each of up and down directions and operating a plurality of cars in the same shaft, wherein the car travels in a reverse direction when the car satisfies predetermined conditions. A method for controlling a lift device, characterized by causing a service to be performed. 2. The method according to claim 1, wherein the predetermined condition is that the density of the car exceeds a predetermined value. 3. The method according to claim 1, wherein the predetermined condition is that the car is concentrated on one shaft. 4. The method according to claim 1, wherein the predetermined condition is that, when the last car of the car group has serviced the end floor, the estimated waiting time of a call to be serviced on a shaft opposite to the shaft on which the car group is located. 4. The method according to claim 1, wherein the predetermined value is exceeded. 5. The control method according to claim 1, wherein the predetermined condition is that at least one of the plurality of cars is immovable in the shaft due to a failure or the like. 6. A method of controlling a lift device having a dedicated shaft in each of up and down directions and operating a plurality of cars in the same shaft, wherein a rearmost car of a group of cars services an end floor. Assigning the call to the last car in the car group when the estimated waiting time of the call served by the shaft in the opposite direction to the shaft in which the car group exists exceeds a predetermined value. How to control the device. 7. A method of controlling a lift device having a dedicated shaft in each of up and down directions and operating a plurality of cars in the same shaft, wherein the last car in the car group has serviced an end floor. When the predicted waiting time of a call serviced by the shaft in the forward direction of the shaft in which the car group is present exceeds a predetermined value, the last car of the car group is driven in the opposite direction to drive the call generation hall. When the distance between the leading car position of the car group after that time and the floor where the call is generated is equal to or less than a predetermined value, the last car in the car group is A method for controlling a lift device, which comprises allocating a call.