JPH0733339A - Control device for elevator - Google Patents

Abstract

(57) [Summary] [Structure] In the elevator control device, means for detecting the position of the elevator and means for registering the call, and means for detecting whether or not the elevator passes each other from the call registration information and the position of another machine running in parallel Is provided, the speed command is limited so as to reduce the speed of the elevator if the elevators pass each other. [Effect] The influence of wind is reduced, noise is reduced, and it is possible to prevent the tail cord from being caught in the hoistway due to lateral wobbling.

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 a control device for a plurality of elevators that run side by side in a narrow hoistway.

[0002]

2. Description of the Related Art When controlling a plurality of elevators installed in a common hoistway, when they run side by side in the same direction, a significant wind noise is generated due to the piston action. As one solution to this wind noise, Japanese Patent Laid-Open No. 59-
As disclosed in Japanese Patent No. 172366, an example is disclosed in which a car is provided with a wind speed detector and a wind pressure detector, and the speed of an elevator is reduced when measures against wind noise are required.

[0003]

The conventional apparatus has been described with respect to the wind noise when driving a plurality of elevators installed in a common hoistway in the same direction. However, even if they pass each other, due to the influence of the wind,
A mobile cable attached to the car (hereinafter referred to as the tail cord) may be swayed and caught by a protrusion in the hoistway, resulting in disconnection.

It is an object of the present invention to provide a control device suitable for driving a plurality of elevators installed in a common hoistway in opposite directions to minimize the influence of wind when they pass each other. is there.

[0005]

In order to achieve the above object, the present invention comprises means for controlling the speed of an elevator, means for communicating a speed command, and operation information between the elevators,
The elevator car position detection means and the call registration means detect whether or not the elevators pass each other.

[0006]

[Operation] As a simple example, consider an elevator that has two units. The respective elevators communicate with each other the operation information of the elevators, so that
Since the call registration floor can be known, it is possible to detect whether or not the vehicle passes the other vehicle before the elevator is running or during acceleration. When it is detected that the vehicle passes the other machine, the speed command value during steady running is set to be less than a predetermined value. By controlling with the reduced speed command, the relative speed between the elevators is reduced, and the influence of wind can be reduced.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a block diagram of the present invention, and shows a case where two units are provided side by side in one hoistway as an example. The respective elevators are designated as A and B. The machine A will be described below. The number B is the same as the number A. In FIG. 1, a car 1A is arranged in a slip-like shape via a counterweight 2A and a hoist 3A. The speed of the electric motor 4A that drives the elevator is controlled by the control device 10A. Further, a pulse generator 5A for detecting the position and speed of the elevator is directly connected to the motor 4A at the shaft of the motor 4A. The control device 10A includes a well-known inverter control device 11A and a microcomputer device 12A including an input / output device. Further, the microcomputer device 12A registers an elevator speed command generation device 121A, an elevator car call, and a landing call. A from the call registration device 124A, the position signal generator 123A that creates the position signal of the elevator from the number of pulses of the pulse generator 5A, and the call registration information and the position information of the elevator and the call registration information and the position information of the No. B machine. It is composed of an elevator passing detector 122A for detecting whether or not the elevators of the No. 1 and No. B elevators pass each other. The control devices 10A and 10B of the No. A machine and the No. B machine are connected to each other by a cable 7 and can communicate their call registration information and position information. Now, let's say that Unit A and Unit B pass each other. At that time, the speed command output from the speed command generator 121A is limited to a predetermined value or less by a signal from the elevator passing detector 122A. With this limited speed command, the speed of the elevator can be made lower than a predetermined value, and even if the No. A and the No. B pass each other, noise due to the wind and lateral fluctuation of the tail cord can be prevented.

[0008]

According to the present invention, when a plurality of elevators are installed side by side in one hoistway, the influence of the wind when the elevators pass each other can be reduced as much as possible.

[Brief description of drawings]

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

[Explanation of symbols]

10A, 10B ... Control device, 121A, 121B ... Speed command generation device, 122A, 122B ... Elevator crossing detection device, 123A, 123B ... Position signal generator, 12
4A, 124B ... Call registration device.

Claims (1)

[Claims] 1. An elevator having a plurality of elevators arranged to travel in one hoistway and equipped with an electric motor for driving each of the elevators and a control device, and the position of the elevator and call registration information. And a means for detecting that the elevators pass each other from the position of another elevator and call registration information, and the speed of the passing elevators is limited to a predetermined value or less by a signal of the detection means. Elevator control device.