JP4484315B2 - Elevator control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elevator control device that controls the operation of a shared elevator by connecting one counterweight to a moving sheave for a pair of cars.
[0002]
[Prior art]
In general, when a failure occurs in the elevator and the elevator becomes unable to start, the passenger is confined in the car. In this case, the passenger waits for the arrival of the maintenance staff and is rescued by the rescue work by the maintenance staff. That is, the maintenance staff confirms the current stop position of the car, opens the landing door, enters the hoistway, opens the rescue exit on the car, and rescues the passenger.
[0003]
On the other hand, in elevators equipped with multiple cars, especially if some of the floors are long and there are considerable difficulties for maintenance personnel to reach the car depending on the stop position of the car, Side rescue operation to rescue using is adopted.
[0004]
FIG. 5 is an explanatory diagram of a side rescue operation in an elevator provided with a plurality of cars. In the A-unit and the B-unit, the cages 3a and 3b and the counterweights 4a and 4b are suspended from ropes 2a and 2b respectively hung on the sheaves 1a and 1b. And the raising / lowering control of the cage | basket | cars 3a and 3b is performed by driving-controlling the winding machines 5a and 5b with the elevator control apparatuses 6a and 6b.
[0005]
Assume that a failure that cannot be started occurs on the side of Unit B. The elevator control device 6a of the No. A machine inputs the car position where the No. B machine is out of order as the car position signal Xb from the elevator control device 6b of the No. B machine. As a result, the elevator control device 6a of No. A can check the car position of No. B, so that a drive command is output to its own hoist 5a so that the car of No. A reaches the car position of No. B. Control up and down.
[0006]
After Unit A reaches the stop position of Unit B, the maintenance staff opens the rescue door installed on the side of the car 3a of Unit A using a special key. After opening the side rescue door, a connecting ladder previously installed on the side of the car is passed between the cars 3a and 3b, and the passengers inside are guided to the Unit A side. The passenger is rescued from the Unit B that cannot be activated by the above procedure.
[0007]
Here, as an elevator provided with a plurality of cars, there is an elevator in which one counterweight is connected to a moving sheave for a pair of cars and shared. This makes it possible to effectively use the hoistway by sharing one counterweight.
[0008]
[Problems to be solved by the invention]
However, in an elevator that shares one counterweight with a moving sheave for a pair of cars, one counterweight is provided at an intermediate position between the two cars, so the two cars 3a and 3b are adjacent to each other. do not do. Therefore, the side rescue operation shown in FIG. 5 cannot be applied. Therefore, in the actual rescue operation, it is necessary to wait for the elevator maintenance staff to arrive, and there is a possibility that the rescue time may be unnecessarily taken.
[0009]
An object of the present invention is to provide an elevator control device that can easily and safely perform rescue work for an elevator passenger who shares one counterweight for a pair of cars.
[0010]
[Means for Solving the Problems]
The elevator control device according to the invention of claim 1 is an elevator control device that controls the operation of a shared elevator by connecting one counterweight to a moving sheave for a pair of cars. A locking means for outputting a command to the counterweight lock mechanism to lock the counterweight, a brake releasing means for outputting a command to the brake circuit of the hoisting machine belonging to the counterpart machine and releasing the brake of the counterpart machine, A rescue driving means for driving the hoisting machine of the No. 1 machine to rescue the other machine to the nearest floor is provided.
[0011]
In the elevator control device according to the first aspect of the present invention, when the counterpart machine stops due to failure, the lock means outputs a command to the shared counterweight lock mechanism to lock the counterweight, and the brake release means is the counterpart machine. A command is output to the brake circuit of the hoisting machine belonging to, and the brake of the counterpart machine is released. And the rescue driving means drives the hoisting machine of its own machine and rescues the other machine to the nearest floor.
[0012]
The elevator control device according to the invention of claim 2 is characterized in that, in the invention of claim 1, the rescue operation means changes the rescue operation content according to the failure information of the counterpart machine input from the faulty counterpart machine. To do.
[0013]
In the elevator control apparatus according to the invention of claim 2, in addition to the operation of the invention of claim 1, the rescue operation content is changed in accordance with the failure information of the counterpart machine input from the faulty counterpart machine. For example, the rescue operation is not performed when a passenger is not on the failed partner aircraft. Further, when the passenger is not in the own machine, the operation of lowering the passenger of the own machine is omitted and the rescue operation of the opponent machine is performed.
[0014]
The elevator control device according to the invention of claim 3 is the elevator control device according to claim 1, wherein the rescue operation means inputs a failure signal that requires rescue operation from the other machine, or an external rescue operation request signal. When the input is made, the rescue operation of the opponent machine is started.
[0015]
In the elevator control device according to the invention of claim 3, in addition to the action of the invention of claim 1, when a failure signal requiring rescue operation is input from the other machine, or a rescue operation request signal from the outside is input Sometimes the rescue operation means starts the rescue operation of the opponent machine.
[0016]
According to a fourth aspect of the present invention, there is provided the elevator control apparatus according to the first aspect, wherein the counterweight lock mechanism includes a lock shoe for fixing the counterweight to the counterweight guide rail, and the lock means. And a locking shoe operating mechanism for projecting the locking shoe to closely contact the counterweight guide rail when the command is received.
[0017]
In the elevator control apparatus according to the invention of claim 4, in addition to the action of the invention of claim 1, the lock shoe operating mechanism of the lock mechanism of the counterweight is configured to release the lock shoe when receiving a command from the lock means. Protruding and closely contacting the counterweight guide rail. As a result, the counterweight is fixed to the counterweight guide rail.
[0018]
According to a fifth aspect of the present invention, there is provided an elevator control device according to the first or fourth aspect, wherein the counterweight is equipped with a battery for driving a lock mechanism of the counterweight.
[0019]
In the elevator control device according to the invention of claim 5, in addition to the action of the invention of claim 1 or 4, the battery for driving the lock mechanism of the counterweight is mounted on the counterweight. The weight can be reduced and a power line for power supply can be omitted from the tail cord.
[0020]
According to a sixth aspect of the present invention, there is provided the elevator control apparatus according to the fifth aspect, wherein the counterweight lock mechanism receives a lock signal by a wireless communication signal.
[0021]
In the elevator control apparatus according to the sixth aspect of the invention, in addition to the operation of the fifth aspect, the lock mechanism of the counterweight receives the lock signal by the wireless communication signal, so that the tail cord is not required.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below. FIG. 1 is a configuration diagram of an elevator control apparatus according to an embodiment of the present invention. FIG. 1 shows elevator control devices 6a and 6b that control the operation of a shared elevator by connecting one counterweight 4 to a moving sheave 7 for a pair of cars 3a and 3b.
[0023]
Cars 3a and 3b are suspended from ropes 2 hung on sheaves 1a and 1b, respectively. A counterweight 4 is installed on the moving sheave 7 in the middle of the two cars 3a and 3b. The moving sheave 7 moves up and down like a moving pulley through the deflecting sheaves 8a and 8b. The elevator control devices 6a and 6b perform lift control of the cars 3a and 3b by driving and controlling the hoisting machines 5a and 5b.
[0024]
For example, when raising and lowering the No. A car, the counterweight 4 moves at a half speed in the direction opposite to the moving direction of the No. A car 3a, and the same applies when raising and lowering the No. B car 3b. That is, the counterweight 4 is accompanied by movement linked to the movements of the two cars 3a and 3b of Unit A and Unit B, but all the movements of each unit are absorbed in the counterweight 4. Therefore, in the normal service, the car 3b of the car B is not affected when the car 3a of the car A is raised or lowered. Therefore, the elevator control devices 6a and 6b may be provided independently of each other, and there is no need to be aware of the counterpart machine with respect to the normal lift control itself.
[0025]
Assume that a failure that cannot be started occurs in Unit B. That is, consider a case in which a failure that cannot be started occurs due to an abnormality or the like in the elevator control device 6b of Unit B. At this time, rescue operation is performed using the No. A machine, but FIG. 1 shows functional blocks of the elevator control devices 6a and 6b in that case. Therefore, when a failure that cannot be started occurs in Unit A and rescue operation is performed in Unit B, the functional block configuration is reversed.
[0026]
The failure that cannot be started that occurred in the elevator control device 6b of the No. B vehicle is detected by the failure detection means 9, and the failure signal Yb is output to the rescue operation means 10 of the elevator control device 6a of the No. A machine. In the rescue operation means 10, when the failure signal Yb from the Unit B is input, the position (failure stop position) of the Car 3b of the Unit B is input as the car position signal Xb from the car position detection means 11 of the elevator control device 6b of the Unit B. To do. As a result, the moving direction and moving distance to the nearest floor suitable for the rescue operation related to Unit B are calculated.
[0027]
Further, the rescue operation means 10 inputs the malfunction information Zb of Unit B from the malfunction information output means 12 of the malfunctioning Unit B, and performs a rescue operation suitable for the malfunction information Zb. The point of selecting and changing the rescue operation according to the defect information Zb in this case will be described later.
[0028]
Next, the lock means 13 of the elevator control device 6a of the No. A machine outputs a counterweight lock signal R to the lock mechanism 14 of the counterweight 4 based on the command of the rescue operation means 10, thereby The counterweight 4 is fixed at the current position so that it cannot move up and down.
[0029]
The brake release means 15 of the elevator control device 6a of the No. A machine outputs a brake release command S to the brake circuit 16 of the elevator control device 6b of the No. B machine, and the brake circuit 16 inputs the release command S. The brake release command S1 is output to the hoisting machine of Unit B for 5b. Thereby, the hoisting machine 5b of the No. B machine becomes an uncontrolled free state. That is, when a failure that cannot be started occurs in Unit B, the brake circuit 16 applies a brake so that the hoisting machine 5b of Unit B does not move, but in performing rescue operation by Unit A, Release the brake.
[0030]
At this point in time, both Unit A and Unit B are in a stopped state, but only the brake restraining force of the hoisting machine 5a of Unit A is in the stopped state. In other words, the hoisting machine 5a of the A machine is responsible for the lifting control of both the A machine and the B machine.
[0031]
Next, the elevator control device 6a of the No. A machine releases the brake of the No. 1 machine, applies torque to the hoisting machine 5a, and starts the up / down control of the No. A machine. By setting the same distance in the direction opposite to the movement direction of Unit B calculated in the initial stage, the elevator car 3b of Unit B is used for rescue when the elevator is completed. To the nearest floor. Reaching the nearest floor makes it very easy to rescue the passengers of Unit B.
[0032]
In other words, it is only necessary to open the door with the door drive circuit in the elevator control device 6b of Unit B, and even if the door drive circuit has an abnormality, the passenger can easily open the door manually. It becomes possible to escape to the outside of 3b. In this case, the door of the B machine may be opened by the elevator control device 6a of the A machine.
[0033]
In the above description, the rescue operation means 10 starts the rescue operation when the failure signal Yb that requires the rescue operation is input from the partner machine, but when the rescue operation request signal is input from the outside In addition, the rescue operation of the other machine may be started.
[0034]
For example, the rescue operation is started by manual input from the monitoring room or a received signal from the remote monitoring center. In any case, when the urgency of rescue is confirmed by an intercom call or the like, these rescue operation request signals are input to the rescue operation means 10.
[0035]
FIG. 2 is a flowchart showing an operation during a rescue operation in the elevator control device 6a of No. A machine. First, it is determined whether or not a rescue operation start condition has been input (S1). That is, it is determined whether or not a failure signal Yb is input from the failure detection means 9 of Unit B or a rescue operation request signal is input from the outside. When the condition for starting the rescue operation is detected, the No. A machine determines whether or not the rescue operation is possible (S2). This is because when Unit B breaks down, it is considered that in practice, Unit A is usually in service, so the rescue operation must be performed after completing service to passengers in Car 3a of Unit A. This is to make it execute.
[0036]
When Unit A is ready for rescue operation, it inputs the car position signal Xb of Unit B, which is the faulty unit (S3), and calculates the distance and direction to the nearest floor based on this car position signal Xb (S4). . Then, the lock signal R is output to the common counterweight 4 (S5), and the brake release command S is output to release the brake of the B machine which is the faulty machine (S6).
[0037]
Next, the start of the No. A machine, which is its own machine, is started (S7), and the elevator 3a of the No. A hoisting machine 5a is moved in the direction opposite to the direction obtained in Step S4 (S8). Then, it is determined whether or not it has moved by the distance obtained in step S4 (S9). If it has moved by that distance, the process is terminated.
[0038]
In this way, when one of the cars breaks down and cannot be started, the elevator car of the other car is used to raise and lower the car of the failed car and move it to the rescue floor. As a result, passengers confined in the car are freed from troublesomeness such as movement between cars required for rescue by side rescue operation, and escape itself becomes easy. In addition, in the car, it is not necessary to provide a ladder or the like for moving between the cars, so that the structure is simplified, and the design can be easily handled when applied to a viewing elevator or the like.
[0039]
Here, as described above, the rescue operation means 10 inputs the malfunction information Zb of the B machine from the malfunction information output means 12 of the malfunctioning B machine, and changes the content of the rescue operation based on the malfunction information Zb. ing. This is because, when one unit becomes inoperable due to a failure, the other unit is almost in general service, and the actual rescue operation start is a general service by the other unit. This is to take into account the situation in the car of the failed machine that has become unstartable.
[0040]
For example, if there are no passengers in the car that is out of order, there is little point in ending the normal service and starting the rescue operation. On the contrary, when a passenger is confined in the car, a rescue operation is required. However, the situation differs depending on whether the number of passengers is one or two and almost full. Especially in the case of full, the passenger discomfort index is usually high and a panic phenomenon is assumed, so the rescue unit should start rescue operation even if the current general service is immediately stopped it is conceivable that.
[0041]
The trouble information output means 12 outputs the trouble information Zb of the trouble machine to the car that performs the rescue operation, and this trouble information Zb includes information on the occurrence of the unstartable trouble, passengers in the car of the trouble machine (B machine). The presence or absence, number of people, etc. are included. The rescue operation means 10 of the elevator control device 6a of the No. A machine detects this malfunction information Zb and determines whether or not the rescue operation is necessary or not. For example, the rescue operation is not performed when a passenger is not on the failed partner aircraft. In addition, when the passenger is not in the own machine, the rescue operation of the opponent machine is started immediately.
[0042]
Regarding the information on the presence / absence of passengers and the number of passengers in the defect information Zb, the elevator control device 6b of the malfunctioning Unit B uses, for example, the presence / absence of an emergency call button as a judgment criterion or refers to the load in the car. Can be considered. In other words, information can be collected using existing functions.
[0043]
By the way, the brake release command S from the brake release means 15 is input to the brake circuit 16 of the failed machine hoisting machine to release the brake of the failed machine hoisting machine. For this purpose, as shown in FIG. 3, the brake circuit 16 can be driven from other machines. As a result, there is no need to newly provide a circuit for releasing the brake of the failed machine, which is economical.
[0044]
FIG. 3 is a circuit diagram of the brake circuit 16 in the embodiment of the present invention. The solid line portion in FIG. 3 corresponds to an existing brake circuit, and the dotted line portion is a newly added element.
[0045]
The brake is configured such that when an electric current is applied to the brake coil 17, an electromagnetic force is generated in the brake coil 17, and the brake is attracted and released. The condition for applying a current to the brake coil 17 is premised on the establishment of the own machine start condition Tb indicating that the own machine has no failure condition or the like and is capable of moving up and down. When the condition Tb is satisfied, the condition contact 18 is in the on state.
[0046]
The brake suction relay 19 is driven by the own machine brake absorption signal Ub output from the elevator control device 6b at the start of raising / lowering of the car, and the brake circuit 16 is operated to turn on the brake by turning on the contact 19a. Open. In addition, the actual brake circuit 16 includes a resistor for adjusting the brake current, a circuit for changing a current value between starting and holding, and the like, which are not shown here. .
[0047]
On the other hand, the newly added dotted line portion rescues the line 21 that supplies power to the brake coil 17 via the rescue operation establishment contact 20 that is activated only when the rescue operation is performed, and the brake suction relay 19 of the malfunctioning machine. A line 22 for inputting a brake release command Ua to enable driving from the side of the side machine. A diode is installed at the butt section of each signal to prevent the power from going around. Since the brake circuit 16 is configured in this way, the existing brake circuit can be used with minimal addition of circuit equipment.
[0048]
FIG. 4 is a detailed view of the counterweight locking mechanism 14. The counterweight 4 has a structure that moves up and down by being guided by a counterweight guide rail 24 via a roller guide 23. The counterweight 4 is used in common by two elevators, and a moving sheave 25 is provided for this purpose. In the counterweight 4, a locking shoe 26 and a locking shoe operating mechanism 27 are installed as a locking mechanism. The lock shoe operating mechanism 27 is supplied with driving power from a battery 28.
[0049]
A counterweight lock signal R is input from the lock means 13 to the lock shoe operating mechanism 27 via the tail cord 29. When the counterweight lock signal R is input, the lock shoe operating mechanism 27 causes the lock shoe 26 to project toward the counterweight guide rail 24. As a result, the locking shoe 26 comes into close contact with the counterweight guide rail 24. Thereby, the counterweight 4 is fixed by the frictional force between the two.
[0050]
The locking shoe operation mechanism 27 is configured by, for example, an element that generates an electromagnetic force such as a coil, and can be easily realized by a structure in which the locking shoe 26 protrudes by the electromagnetic repulsive force. The contact surface of the locking shoe 26 with the counterweight guide rail 24 is made of a material that is excellent in strength and that can generate a large frictional force, such as ceramic.
[0051]
Here, without providing the battery 28, the driving power may be supplied to the locking shoe operating mechanism 27 through the power supply line to the tail cord 29. Further, the counterweight lock signal R is input from the lock means 13 to the lock shoe operation mechanism 27 via the tail cord 29. However, the counterweight lock signal R is transmitted by radio using an FM wave or optical communication. It is also possible to do. In this case, by installing the battery 28 on the counterweight 4 as a power supply, the cable itself of the tail cord 29 can be omitted. In particular, a general large-capacity battery is quite effective in terms of weight and can be regarded as a part of the weight.
[0052]
【The invention's effect】
As described above, according to the present invention, when a counter machine of an elevator shared by connecting one counterweight to a moving sheave for a pair of cars fails and cannot be started, the other car This makes it possible to control the lifting and lowering of the other machine, making rescue operation easy.
[0053]
This rescue operation can be started automatically by detecting the degree of failure and the presence or absence of confinement from the faulty partner's unit, or it can be activated by a command from the monitoring room, so there is no need to wait for the arrival of dedicated maintenance personnel It is possible to quickly respond to the situation.
[0054]
Further, in implementation, the layout restrictions are considerably relaxed, and for example, the present invention can be applied even in the case of equality across a passage. Moreover, since it contributes to the simplification of the car structure, it is advantageous in design for application to prospecting and the like.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of an elevator control apparatus according to an embodiment of the present invention.
FIG. 2 is a flowchart showing an operation during a rescue operation in the elevator control device according to the embodiment of the present invention.
FIG. 3 is a circuit diagram of a brake circuit in the embodiment of the present invention.
FIG. 4 is a detailed view of a counterweight locking mechanism according to an embodiment of the present invention.
FIG. 5 is an explanatory diagram related to a side rescue operation of an elevator in a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Sheave, 2 ... Rope, 3 ... Car, 4 ... Balance weight, 5 ... Hoisting machine, 6 ... Elevator control apparatus, 7 ... Dynamic sheave, 8 ... Deflection sheave, 9 ... Failure detection means, 10 ... Rescue driving means , 11 ... car position detection means, 12 ... failure information output means, 13 ... lock means, 14 ... lock mechanism, 15 ... brake release means, 16 ... brake circuit, 17 ... brake coil, 18 ... conditional contact, 19 ... brake suction Relay, 20 ... rescue operation establishment contact, 21, 22 ... line, 23 ... roller guide, 24 ... balance weight guide rail, 25 ... dynamic sheave, 26 ... locking shoe, 27 ... locking shoe operating mechanism, 28 ... Battery, 29 ... Tail cord

Claims (6)

In an elevator control device that controls the operation of a shared elevator by connecting one counterweight to a moving sheave for a pair of cars, it outputs a command to the shared counterweight lock mechanism when the other machine stops due to a failure. Lock means for locking the counterweight, brake release means for releasing the brake of the other machine by outputting a command to the brake circuit of the hoisting machine belonging to the other machine, driving the own machine's hoisting machine An elevator control device comprising rescue operation means for rescue operation to the nearest floor. 2. The elevator control device according to claim 1, wherein the rescue operation means changes the rescue operation content in accordance with the failure information of the counterpart machine input from the faulty counterpart machine. The rescue operation means starts rescue operation of the counterpart machine when a failure signal that requires rescue operation is input from the counterpart machine or when a rescue operation request signal is input from the outside. Item 2. The elevator control device according to Item 1. The counterweight locking mechanism includes: a locking shoe for fixing the counterweight to the counterweight guide rail; and the counterweight guide rail that projects the locking shoe when receiving a command from the locking means. The elevator control device according to claim 1, further comprising: a lock shoe operating mechanism that is closely attached to the vehicle. The elevator control device according to claim 1, wherein the counterweight is equipped with a battery for driving a lock mechanism of the counterweight. The elevator control device according to claim 5, wherein the counterweight locking mechanism receives a lock signal by a wireless communication signal.

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