JP2788361B2 - Elevator car position correction device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art In a rope elevator in which a wire rope wound by a hoist is sent out by frictional force with a sheave and a car is moved up and down, rotation of the electric motor is performed by a pulse transmitter provided on a driving electric motor shaft. Calculate the mileage from the number,
In many cases, a method of detecting a car position is employed. The rope type elevator will be described with reference to FIG.

[0003] A counterweight 3 is suspended from the other end of a wire rope 2 having one end suspending the car 1, and a middle portion thereof is wound around a sheave 5 of a hoisting machine 4, and a sheave 5 attached to an electric motor.
The car is raised and lowered by the frictional force between the car and the wire rope 2.

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

[0005] However, due to the repeated start, acceleration, running, stop, etc. of the car, and the emergency stop, the inertia of the car 1 and the counterweight 3 causes a slip between the sheave 5 and the wire rope 2 due to slip. An error occurs between the number of pulses of the pulse transmitter 7 indicating the traveling distance due to the rotation of the motor and the actual traveling distance of the car.

In such a case, a floor detector 12 (for example, a reed switch) indicating the absolute position of the car attached to each floor.
In this method, a correct car position is detected to detect an error in the traveling distance, and the error is corrected.

However, the number of detectors that must be provided on each floor increases with the rise of floors in recent years, and there are problems in terms of reliability, maintenance and inspection, and costs. In general, a terminal floor detector at the terminal floor is used as a detector for position correction.

[0008]

However, in the method using the detector at the terminal floor, if the traveling of the intermediate floor is repeated, the vehicle continues to travel without correcting the error, so that the error becomes large. Immediately, the landing shifts, giving rise to anxiety about the use of passengers, resulting in poor service. Therefore, it is an object of the present invention to provide a device that can easily and economically correct a car position on all floors.

[0009]

According to the present invention, there is provided a landing detector for detecting a landing position of a car provided on each floor.

That is, the present invention relates to the rotation of a car driving motor.
The value of the mileage converted by the number between the hoistway side and the car side
By comparing the absolute position of the car at
The elevator car position correction device
Two detectors installed on the side, separated from each other in the vertical direction
And two detectors provided on each floor of the hoistway
The mounting pitch length of the two detectors and the subject
Landing position detection plates, and provided for each of these landing position detection plates
Each with a different pattern of slits
When the two detectors are activated at the same time,
Of the floor with the floor of the landing
The absolute position of the car by the detection signal based on the slot pattern
Is detected and transmitted to the car position correcting device.

[0011]

When the car is landing, it passes through the slit of the landing position detection plate, and the landing detector outputs a signal corresponding to the slit pattern. This is a pattern representing each floor, so that the absolute position of the car can be known and the traveling error can be corrected.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the embodiments shown in FIGS.

The rope type elevator is provided with a floor detector for detecting the position of the floor of the landing 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, 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 , first, the detector 10a
Is activated by the detection plate 11, the detector 10b is operated, the two detectors 10a and 10b are simultaneously operated, and then the detector 10b returns.

That is, if the coincidence point between the landing floor and the car floor is set when the two detectors operate simultaneously, the floor can be aligned. When the car descends, the operation of the detector is reversed and the floors are aligned.

A plurality of slits are provided in the existing landing position detecting plate 11, and a pattern of the operation and non-operation of the detector is transmitted through the group of slits. Of the absolute position signal. The slit pattern is displayed by 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 second floor, and slits 2 and 3
Represents 10 + 2 = 12 floors.

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

[0018]

According to the present invention, it is possible to accurately correct the car position with a simple and economical structure using only an existing floor detector and providing a landing position detecting plate provided with a slit. Service degradation can be prevented.

[Brief description of the drawings]

FIG. 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 transmitter 9 ... Position detection calculation part 10a, 10b ... Floor detector 11 ... Landing position detection board

Claims (1)

(57) [Claims] 1. A conversion run based on the rotation speed of a car driving motor.
The value of the line distance is set between the hoistway side and the car side.
The element to be corrected by comparison with the value of the absolute position detector
In the beta car position correction device,The two units provided on the car side are separated from each other in the vertical direction.
A detector, Attached to each floor on the hoistway side, mounting the two detectors
A dress having a pitch length and being an object of the two detectors.
A floor position detection plate, Different patterns provided for each of these landing position detection plates
With turn slits, When the two detectors are activated simultaneously, the car
Detects floor matching between the floor and the landing floor, and
The absolute position of the car by the detection signal based on the lit pattern
To detect the location The elevator characterized by doing
Your position correction device.