JPH05132257A - Elevator control unit - Google Patents

Abstract

PURPOSE:To enable a distance to a troubled cage to be detected so accurately when the elevator cage has gone wrong, in an elevator provided with plural units of the cages in the same elevator shaft. CONSTITUTION:Each of range detectors 31, 32 is installed in the lower part of the first cage 2 and the upper part of a second cage 3 respectively. When the cage 2 gets out of order and stop, a laser beam is radiated out of the range detector 32 of the cage 3, and the reflected light is received, through which a distance between both these cages 2 and 3 is directly detected. On the basis of this distance, the cage 3 is traveled and then stopped just below the cage 2, and passengers in the cage 2 are transferred onto the cage 3 through each of rescue ports 24, 26 of both the cages 2 and 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to rescue operation and collision prevention of an elevator having a plurality of cars arranged in the same hoistway.

[0002]

2. Description of the Related Art FIGS. 3 and 4 show, for example, JP-A-3-102.
It is a figure which shows the conventional emergency rescue device of the elevator shown by 085 gazette, FIG. 3 is a block diagram, FIG. 4 is a detailed view of a cage | basket part.

In FIG. 3, (1) is a hoistway, and (2) is a hoistway.
The first car placed in (1), (3) the second car placed below the first car (2), (4) (5) the side of the car (2) (3) (6) is a roller guide installed on the car (2) (3) to guide the car (2) (3) along the guide rails (4) (5), (7) Installed at the bottom of the basket (2) (3),
(2) A braking device for braking (3), (8) is a primary coil of a linear motor arranged on both side walls of the hoistway (1), for the first floor primary coils (9) (10), for the second floor It is composed of primary coils (11) and (12), primary coils (13) and (14) for the third floor, and primary coils (15) and (16) for the fourth floor.

(17) is a secondary conductor of the linear motor that is installed on the side of the car (2) (3) and faces the primary coil (8), and (18) is an inverter that supplies power to the primary coil (8) Therefore, it has a variable voltage variable frequency (hereinafter referred to as VVVF) device (19). (20) is the floor position of each floor.

In FIG. 4, (21) is a car frame that forms the skeleton of the car (2) and (3), and (22) is a car supported in the car frame (21) via a vibration-proof rubber (23). Room, (24) is a rescue outlet provided on the floor of the car room (22) of the first car (2), (25) is a lid that closes the rescue exit (24), and (26) is a second Rescue outlet provided on the ceiling of the car room (22) of the car (3), (27) is a lid that closes the rescue outlet (26), (28) is the car frame of the first car (2) at the upper end An emergency ladder having a locking portion (29) that is detachably engaged with the lower portion of (21).

The conventional emergency rescue device for an elevator is constructed as described above, and when a start command is output, it is a control device.
(7) is set to the open state. Further, the VVVF device (19) in the inverter (18) generates an alternating current having a predetermined voltage frequency based on the speed command value and supplies it to the primary coil (8). As a result, thrust is generated by the relationship between the generated moving magnetic field and the secondary conductor (17), and the cars (2) and (3) are driven up and down.

Next, when the car (2) breaks down and its lifting operation becomes uncontrollable, a start command is output to the car (3) and the car (3) rises. When the car (3) arrives just below the car (2), the controller (7) stops the car (3). Afterwards, passengers trapped in the car (2) are
4) Open the rescue outlet (26) of the car and the car (3), and connect the emergency ladder (28).
Hang it through the rescue exit (26) and use it to
Transfer to (3). The car (3) is then activated, stopped on the appropriate floor for rescue and the passengers inside are rescued outside.

In such a rescue operation, it is necessary to detect the accurate position of the defective car. For this reason, although detailed description is omitted, it is common to provide an encoder (not shown) on the cars (2) and (3). That is, the encoder driving roller is brought into contact with the guide rail (4) or the guide rail (5) to roll, and the pulse generated in proportion to the traveling speed of the car (2) (3) is input. .. Then, the output of the encoder of the defective car is fetched into the control device as position data, and the distance to the defective car is calculated.

[0009]

In the conventional emergency rescue device for an elevator as described above, the position of the defective car is determined based on the output of the encoder driven by the rollers rolling on the guide rails (4) and (5). Since it detects the fault, the stopped position of the faulty car can be detected because the pulse is not output accurately or the transmission is not possible at all due to the slipping of the roller when a fault occurs, the abnormality in the transmission system, etc. However, there is a problem that accurate rescue operation becomes impossible.

Even during normal operation, there is a possibility that the above-mentioned accident in which the position of the other car cannot be detected occurs.
There is also a problem that the cars (2) and (3) may collide.

The present invention has been made in order to solve the above problems, and it is possible to detect an accurate stop position of a faulty car during rescue operation, and to prevent the collision of both cars during normal operation. An object is to provide a control device.

[0012]

According to a first aspect of the present invention, there is provided an elevator control device in which a distance detector is provided at a lower portion of a first car and an upper portion of a second car so that one of the cars fails. At this time, the distance between the first and second cars is detected, and the other car is made to stop approaching the faulty car based on this distance.

Further, in the elevator control device according to the second aspect of the invention, the distance between the first and second cars becomes a predetermined value or less based on the output of the distance detector of the first aspect of the invention during normal operation. Then, the first and second cars are stopped.

[0014]

In the first aspect of the present invention, the distance between the two cars is detected by the distance detectors provided on both cars. Therefore, the distance to the faulty car can be determined directly.

Further, according to the second aspect of the invention, when the distance between the cars becomes equal to or less than the predetermined value, the cars are stopped, so that the approach of the cars is surely detected.

[0016]

【Example】

Example 1. 1 and 2 are views showing an embodiment of a first invention of the present invention. FIG. 1 is a configuration diagram of a main part, FIG. 2 is a block diagram, and parts similar to those of a conventional device are indicated by the same reference numerals. ..

In FIG. 1, (31) is a distance detector installed at the bottom of the car (2), and (32) is a distance detector installed at the top of the car (3).

In FIG. 2, (33) is a distance detector (31) (32)
An optical transceiver for transmitting and receiving laser light between them, (34) a reflector for reflecting the laser light transmitted from the optical transceiver (33), (35)
Is a processing circuit unit that processes a signal from the optical transceiver unit (33), and the optical transceiver unit (33), the reflector (34) and the processing circuit unit (35) constitute the distance detectors (31) (32). Has been done. (36) Basket (2)
A car control circuit unit installed on (3), and (37) is an elevator control panel including the inverter (18).

Next, the operation of this embodiment will be described. now,
If the car (2) fails and its lifting operation becomes uncontrollable,
The car (3) projects a laser beam from the light transmitting / receiving unit (33), reflects it by the reflector (34) of the car (2), and receives the reflected light by the light transmitting / receiving unit (33). The processing circuit section (35) detects the distance between the cars (2) and (3) from the projected laser beam and the received laser beam. The detected distance is based on the car control circuit (36)
Sent to the elevator control panel (37).

The control board (37) outputs a start command to the car (3), and the control device (7) is set to the open state. Then, the car (3) runs toward the target stop position based on the detected distance between the cars (2) and (3). When the car stops at the target stop position just below the car (2), the car (3) is held by the guide rails (4) and (5) by the control device (7). After that, the passengers in the car (2) will exit the rescue exit (24) (2
Open 6) and transfer to the car (3) with the emergency ladder (28).

Example 2. Although the distance detectors (31) and (32) detect the distance between the cars (2) and (3) during the rescue operation in the first embodiment, the distance detectors (31) and (32) are normally operated. It is also possible to use it as a safety device to prevent a car collision at the time. That is, during normal operation, the distance detectors (31) (32) detect the distance between the cars (2) and (3), and the elevator control panel
It is sufficient to control the car (2) (3) to stop when this distance becomes equal to or less than the predetermined value at (37), and the collision of the cars (2) and (3) can be prevented.

Embodiment 3. In each of the above embodiments, the distance detector (3
Although (1) and (32) are designed to project laser light, the same function can be obtained by projecting electromagnetic waves such as microwaves.

Example 4. In the above embodiments, the same hoistway
The case where two cars (2) and (3) are installed in (1) has been described, but the number of cars is not limited to two, and more cars can be applied. In that case, it is necessary to install distance detectors on both the top and bottom of each car.

[0024]

As described above, in the first invention of the present invention, the distance detectors are provided at the lower part of the first car and the upper part of the second car, and when one car fails, the distance between the two cars is increased. Since the vehicle is detected, it is possible to directly know the distance to the faulty car, accurately stop in proximity to the faulty car, and rescue passengers.

Further, in the second aspect of the invention, during normal operation, when the distance between the two cars detected by the distance detector becomes equal to or less than the predetermined value, both cars are stopped so that the two cars can approach each other reliably. It has the effect of preventing the collision of both cars.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a main part showing a first embodiment of the present invention.

FIG. 2 is a block diagram showing a first embodiment of the present invention.

FIG. 3 is a block diagram showing a conventional emergency rescue device for an elevator.

FIG. 4 is a detailed view of the car portion of FIG.

[Explanation of symbols]

1 Hoistway 2 First car 3 Second car 24,26 Rescue exit 31,32 Distance detector 37 Rescue operation means and emergency stop means (elevator control panel)

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[Procedure amendment]

[Submission date] July 30, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 1

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

In such a rescue operation, it is necessary to detect the accurate position of the defective car. For this reason, although detailed description is omitted, it is common to provide an encoder (not shown) on the cars (2) and (3). That is, the encoder driving roller is brought into contact with the guide rail (4) or the guide rail (5) to roll, and the pulse generated in proportion to the traveling speed of the car (2) (3) is input. .. And salvation
On the side of the car, the output of the encoder of the defective car is taken into the control device as position data, and the distance to the defective car is calculated.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction content]

[0009]

Very rescue device of a conventional elevator as described above which THE INVENTION The object will to solve the above-guide rail (4) an output based Heck your position encoder driven by rollers that roll (5) due to the so detected, the slip of the roller when a fault occurs, the abnormality of the transmission system, or not correctly output pulses, exactly by or become impossible transmitted to the control device, the rescue cage fault basket There is a problem that the correct rescue operation cannot be performed because the exact stop position of is not known .

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction content]

The present invention has been made to solve the above problems, and it is possible to detect an accurate distance to a faulty car during rescue operation, and to prevent the collision of both cars during normal operation. An object is to provide a control device.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Name of item to be corrected] 0019

[Correction method] Change

[Correction content]

Next, the operation of this embodiment will be described. now,
If the car (2) fails and its lifting operation becomes uncontrollable,
The car (3) projects a laser beam from the light transmitting / receiving unit (33), reflects it by the reflector (34) of the car (2), and receives the reflected light by the light transmitting / receiving unit (33). The processing circuit section (35) detects the distance between the cars (2) and (3) from the relationship between the projected laser light and the received laser light. The detected distance is sent from the on-car control circuit unit (36) to the elevator control panel (37).

Claims (2)

[Claims] 1. A plurality of cars that are lifted up and down independently of each other are arranged in the same hoistway, and among these cars, a floor of the first car and a second car that moves up and down below the first car. In an elevator having a rescue exit provided on a ceiling of a car, the first and second cars are provided by radiating energy waves to the other car at the lower part of the first car and the upper part of the second car, respectively. A distance detector is provided for detecting the distance between them, and when one of the first and second cars fails and stops, the other car is caused to travel in accordance with the output of the distance detector, and the one car is moved to the other car. An elevator control device comprising rescue operation means for stopping approaching. 2. In an elevator in which a plurality of cars that move up and down independently of each other are arranged in the same hoistway, energy waves are sent to the other cars at the lower part of the first car and the upper part of the second car, respectively. The first by radiating
And a distance detector for detecting the distance between the second cars,
When the distance between the first and second cars becomes a predetermined value or less based on the output of the distance detector during normal operation, the first
And an elevator control device comprising emergency stop means for stopping the second car.