JPH0543159A - Elevator cage position correction device - Google Patents

Abstract

PURPOSE:To detect respective floors and correct the position of an elevator cage without an increase in the number of detectors due to the installation of new detectors on respective floors, and necessary traveling to the final floor with detectors for final floor installed for the purpose of correcting some displacement, in an elevator which computes the position of an elevator cage by pulse counting. CONSTITUTION:Slits particular to respective floors are provided in a floor arrival position detection plate 11 so as to make neutual comparison in patterns for respective floors stored in a memory inside a control panel 8 beforehand from the operating patterns of floor arrival detectors 10a, 10b for detection of the absolute position of an elevator cage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for correcting an error in a car position detector of a rope type elevator.

[0002]

2. Description of the Related Art In a rope type elevator in which a wire rope wound by a hoisting machine is fed by frictional force with a sheave to move a car up and down, a motor is rotated by a pulse transmitter or the like provided on a driving motor shaft. Calculate the mileage from the number,
In many cases, the method of detecting the car position is used. A rope type elevator will be described with reference to FIG.

A balance weight 3 is hung on the other end of a wire rope 2 whose one end hangs a car 1 and the middle of the weight is hung on a sheave 5 of a hoisting machine 4 and attached to an electric motor.
The car is moved up and down by the frictional force between the car and the wire rope 2.

In order to operate (start, run, stop) the car 1, it is necessary to always know the accurate car position, and as a method therefor, the number of pulses from the pulse transmitter 7 attached to the rotary shaft of the electric motor 6 Is counted by the position detection calculation unit 9 in the control panel 8 and the traveling distance of the car is calculated to obtain the car position.

However, due to the repeated starting, acceleration, running, stopping, etc. of the car and the emergency stop, the inertial force of the car 1 and the counterweight 3 causes slippage between the sheave 5 and the wire rope 2, An error occurs between the number of pulses of the pulse generator 7 indicating the traveling distance due to the rotation of the electric motor and the actual traveling distance of the car.

In such a case, the floor detector 12 (for example, a reed switch) that indicates the absolute position of the car attached to each floor
Is used to detect the correct car position, detect the error in the mileage, and correct it.

However, the number of detectors that must be provided on each floor has increased with the increase in floors of buildings in recent years, and there is a problem in terms of reliability, maintenance and cost, and instead of this, there are up and down hoistways. It is common to use the terminal floor detector at the terminal floor of the same as the detector for position correction.

[0008]

However, in the method utilizing the detector on the terminal floor, if the traveling on the intermediate floor is repeated, the error continues to be corrected without correcting the error and the error becomes large. Immediately, there is a gap in the landing, which makes passengers uncomfortable and deteriorates the service. Therefore, it is an object of the present invention to provide an apparatus which can economically and easily correct the car position on all floors.

[0009]

To achieve the above object, the present invention utilizes a landing detector for detecting the landing position of a car provided on each floor.

A slit for discriminating a stop floor is provided on the floor-position detecting plate on each floor. The slits are designed to show different patterns depending on the combination of the number and the size of the width, and this is distributed to each floor, and this pattern is detected by the landing detector installed on the car side to know the absolute position of the car, Send to the car position correction device.

[0011]

When the car lands on the floor, it passes through the slit of the landing position detecting plate, and the floor detector outputs a signal according to the slit pattern. Since this is a pattern representing each floor, the absolute position of the car can be known and the running error can be corrected.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described based on the embodiments shown in FIGS.

In the rope type elevator, a floor detector for detecting the position of the floor surface of the hall is provided on each floor. This is provided with a landing position detection plate on the floor side and a floor detector on the car side. That is, the upper and lower two detectors 10a on the car side,
10b is provided, and a landing position detection plate 11 having the same length as the mounting pitch of the two detectors is provided on the floor side.

When the car rises from the bottom, first the detector 10
b is actuated by the detection plate 11, the detector 10a then operates, the two detectors 10a, 10b are simultaneously activated, and then the detector 10b returns.

That is, if the two detectors are operated at the same time, the floors can be aligned by setting the coincidence point between the floor of the hall and the floor of the car. When the car goes down, the detectors will be reversed and the floor will be adjusted.

A plurality of slits are provided on the existing floor-position detecting plate 11, and the detector passes through this slit group to transmit a pattern of the detector's operation / non-operation. The absolute position signal of. The slit pattern is displayed as a combination of the number of slits and the size of the slit width. The slit is provided, for example, as shown in FIG. That is, the slit 1 indicates the floor data start pattern, and the slit 2
Indicates the 10th floor, slit 3 indicates the 2nd floor, and slits 2 and 3
Represents 10 + 2 = 12th floor.

This detection signal is sent to the position detection calculation section 9 of the control panel 8 and compared with the pattern stored in advance,
Judge which floor, at the same time know the exact car position,
This will correct the mileage error.

[0018]

According to the present invention, the existing car floor detector is utilized, and the car position can be accurately corrected with a simple and economical structure in which only the landing position detection plate provided with the slit is provided. It is possible to prevent the deterioration of service.

[Brief description of drawings]

1 is a schematic view of an elevator according to the present invention.

FIG. 2 is a partial detailed view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Basket 7 ... Pulse generator 9 ... Position detection calculation part 10a, 10b ... Floor detector 11 ... Landing position detection plate

Claims (1)

[Claims] 1. An elevator car position correction for correcting a value of a converted travel distance according to a rotation speed of a car drive motor by comparing it with a value of a car absolute position detector provided between a hoistway side and a car side. In the equipment, a plurality of slits that show different patterns depending on the number and the size of the width are opened on the floor position detecting plate of each floor, and the floor side detector on the car side that detects this pattern and outputs it as the absolute position of the car An elevator car position correcting device, characterized in that the car is an absolute position detector for the car.