JPH07315714A - Control device of elevator - Google Patents

Abstract

PURPOSE:To decrease confinement accident of passenger(s) in an elevator car in case it is in emergency stop by allowing the safety device or protection device of the elevator to sense occurrence of the failure. CONSTITUTION:An elevator control device comprises a door safety device B and its normally open contact B1 which are actuated when the elevator senses failure in terms of safety in operation and the car goes in emergency stop while the door system is judged to be free of any failure, a normally closed contact C1 to be closed when the car is stopped within the door opening/closing area of the applicable floor, and a door control circuit 2 to open the door by a normally open contact O1 to be closed when a door open button operation informing circuit 3 actuated in the described condition and a door open button are operated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator control device, and more particularly to an elevator control device for controlling opening and closing of an elevator door when an emergency stop occurs due to an abnormality in safe operation of the elevator.

[0002]

2. Description of the Related Art An elevator is equipped with various safety devices such as a drive system safety device and various protection devices for preventing damage to equipment and devices in order to ensure the safety of passengers in a car. It is provided. Then, when these safety devices and protective devices detect an abnormality and operate, the elevator enters an emergency stop state and the car immediately stops in the hoistway,
All functions of the elevator are kept stopped until the activated safety devices and protective devices are restored to the normal state. Regarding the safety control technology for this elevator, JP-A-50-48644 and JP-A-56-7
The disclosure is recognized in JP-A-0287 and JP-A-58-130875.

[0003]

In the above-mentioned conventional elevator, for example, the safety device of the drive system operates by detecting an abnormality of the drive system, the elevator is brought into an emergency stop state, and the car stops in the hoistway. Then, even if the stop position of the car is within the door opening / closing area on a certain floor and there is no abnormality in the safety system of the door system, the elevator is in a state where all functions are stopped, and the car is Continue to stop at that position. And until the safety device of the drive system returns to normal,
Since the elevator does not work, passengers in the car are trapped.

The present invention has been made in view of the current state of emergency elevator control as described above, and its purpose is to make the elevator in an emergency stop state when a safety device or a protective device detects an abnormality. In this case, it is an object of the present invention to provide an elevator control device capable of reducing accidents of trapping passengers in a car.

[0005]

In order to achieve the above object, the present invention provides a main safety protection device for detecting an abnormality in safe elevator operation, and an elevator operation when the main safety protection device detects an abnormality. And a stop means for stopping the
At the time of detecting an abnormality of the hand safety protection device, in the elevator control device in which the stopping means operates to cause an emergency stop of the car, a door safety device that detects an abnormality of the door system of the elevator, and at the time of the emergency stop, the If the door safety device does not detect an abnormality and the car is located within the door opening / closing area of the floor, a notification means for operating the door open button on the operation panel in the car is provided. When the door opening button is operated, a door opening means for opening the elevator door is provided.

[0006]

With this structure, when the main safety device detects an abnormality in safe operation of the elevator, the stop means is activated to bring the elevator into a stopped state, and the car makes an emergency stop in the hoistway. At the time of this emergency stop, if the door safety device does not detect an abnormality in the elevator door system and the car is located within the door opening / closing area of the floor, the door of the operation panel in the car will open. Notify passengers in the car to operate the buttons. When there are passengers in the car, the elevator door is opened by operating the door open button. For this reason, passengers in the car can be alighted on the floor without being trapped in the car and without waiting for the restoration of the main safety device.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIG. Here, FIG. 1 is a block diagram showing the configuration of the embodiment.

As shown in FIG. 1, a series connection circuit of a normally closed contact S1, a normally closed contact S2, a normally closed contact S3, a normally closed contact S4 and a main safety protection device A between the DC power supply terminals P and N, The normally closed contact D1 and the series connection circuit of the door safety device B are connected in parallel with each other. Similarly, a series connection circuit of the normally open contact A1 and the elevator control circuit 1, the normally open contact B1, the normally open contact A2, and the door control circuit 2 between the DC power supply terminals P and N.
And a series connection circuit of the normally closed contacts C2 are connected in parallel with each other, and a series connection circuit of the normally closed contact A3 and the normally open contact O1 is connected in parallel with the normally open contact A2.
Further, a series connection circuit of a normally open contact B2, a normally closed contact A4, a normally closed contact C1, and a door opening button operation notification circuit is connected in parallel between the DC power supply terminals P and N.

Here, the normally-closed contact S1 is a normally-closed contact of a relay (not shown) for detecting a reverse phase or open phase abnormality of the main circuit power source, and the normally-closed contact S2 is for not shown an overcurrent of the main motor. The normally-closed contact and normally-closed contact S3 of the relay are the normally-closed contact and normally-closed contact S4 of the switch for detecting the state of the emergency rescue outlet of the car.
Is a normally open contact of the emergency stop device of the car, and the main safety protection device A detects the operation when any of these contacts is opened. The normally closed contact D1 is
When the detection device detects an overcurrent of the door motor with a normally-closed contact of a detection device (not shown) that detects an overcurrent of the door motor, the door safety device B stops operating. Furthermore, normally open contacts A1 and A2 and normally closed contacts A3 and A
4 is a normally-open or normally-closed contact of the main safety protection device A, normally-open contacts B1 and B2 are normally-open contacts of the door safety device B, and normally-closed contacts C1 and C2 are door opening / closing areas of the car floor. It is a normally-closed contact of a position detection relay (not shown) that detects that it is located at. The normally open contact O1 is a normally open contact of a detection relay (not shown) that operates when the door open button on the operation panel in the car is operated. The elevator control circuit 1 has a function of controlling the operation of the elevator, and the door control circuit is
It has a function of controlling opening / closing of the door of the elevator, and the door opening button operation notification circuit has a function of informing passengers in the car to operate the door opening button in the operation panel.

In the embodiment having such a structure, the normally open contact A1 of the main safety protection device A corresponds to the stopping means of the invention, and the door opening button operation notification circuit 3 and the normally open contact B1 of the door safety device B are provided. The normally open contact O1 of the door open button operation relay and the normally closed contact C2 of the position detection relay constitute the door opening means of the invention.

Next, the operation of the embodiment will be described.

There is no reverse-phase or open-phase abnormality in the elevator main circuit power supply, no overcurrent of the main motor is detected, and no abnormality is detected in the emergency exit of the car. If it is not operating and no abnormality is detected in the safe operation of the elevator, the DC power supply terminal P and the normally closed contact S
1, a normally closed contact S2, a normally closed contact S3, a normally closed contact S4, a main safety protection device A and a DC power supply terminal N to form a closed circuit,
The main safety protection device A is activated. Main safety protection device A
When is activated, the normally open contact A1 is closed, so that a closed circuit is formed by the DC power supply terminal P, the normally open contact A1, the elevator control circuit 1 and the DC power supply terminal N, and the elevator control circuit 1 is in a normally operated state. Becomes In this case, if the overcurrent is not detected in the door motor, the DC power supply terminal P, the normally closed contact D
1. Since the closed circuit is formed by the door safety device B and the DC power supply terminal N, the door safety device B is activated.

As described above, when the door safety device B is activated, the normally open contact B1 is closed, and the operation of the main safety protection device A closes the normally open contact A2, so that the car is on the floor door. When located in the open / close area, the normally closed contact C2 is closed. For this reason, when the car is located in the door opening / closing area of the floor, a closed circuit is formed at the DC power supply terminal P, the normally open contact B1, the normally open contact A2, the door control circuit 2, the normally closed contact C2, and the DC power supply terminal N. As a result, the door control circuit 2 is activated. Therefore, the elevator is operated and controlled by the elevator control circuit 1 to perform service operation between floors, and when the car approaches the registered floor and reaches the door opening / closing area, the door control circuit 2 controls opening / closing of the elevator door. Be done.

In the present embodiment, the main circuit power supply of the elevator is out of phase or out of phase, an overcurrent is detected in the main motor, or an abnormality is detected in the emergency exit of the car. , When an emergency stop device of the car is activated, and an abnormality in safe operation of the elevator is detected,
Since the main safety protection device A stops operating and the normally-open contact A1 is opened, the elevator control circuit 1 stops operating, the elevator goes into a non-operating state, and the car makes an emergency stop in the hoistway. At this time, if there is no abnormality in the door system of the elevator, the door safety device B is in the operating state, and the car is stopped in the door opening / closing area of the floor, the normally open contact B2
Since the normally closed contact A4 and the normally closed contact C1 are closed,
The door opening button operation notification circuit 3 operates to notify the passengers in the car. When there is a passenger in the car and the door open button is operated, the normally open contact B1, the normally closed contact A3, the normally open contact O1 and the normally closed contact C2 are closed, so that the door control circuit 2 operates and the elevator door is opened. Is released. Therefore, the passengers in the car can get off the floor from the car without waiting for the recovery of the abnormal elevator safety operation, and the passengers are not trapped in the car.

[0015]

As described in detail above, according to the present invention, an abnormality in the safe operation of the elevator is detected, and when the car has an emergency stop, no abnormality is detected in the door system.
Moreover, when the car is stopped within the door opening / closing area on the floor, the door opening button is operated by the notification means to the effect that the passenger in the car operates the door opening button, and the elevator door is opened by the door opening means. As a result, it becomes possible to reduce the occurrence of accidents in which passengers are trapped in the car.

[Brief description of drawings]

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

[Explanation of symbols]

 1 Elevator control circuit 2 Door control circuit A Main safety protection device B Door safety device P, N DC power supply terminals

Claims (1)

[Claims] 1. A main safety protection device for detecting an abnormality in safe elevator operation, and a stop means for stopping the operation of the elevator when the main safety protection device detects an abnormality,
At the time of detecting an abnormality of the hand safety protection device, in the elevator control device in which the stopping means operates to cause an emergency stop of the car, a door safety device that detects an abnormality of the door system of the elevator, and at the time of the emergency stop, the If the door safety device does not detect an abnormality and the car is located within the door opening / closing area of the floor, a notification means for operating the door open button on the operation panel in the car is provided. An elevator control device comprising: a door opening unit that opens the door of the elevator when the door opening button is operated.