Elevator system

Patent metadata

Field	Value
Publication number	US-9592996-B2
Application number	US-201314913178-A
Country	US
Kind code	B2
Filing date	Sep 3, 2013
Priority date	Sep 3, 2013
Publication date	Mar 14, 2017
Grant date	Mar 14, 2017

Abstract

An elevator system is a one-shaft double-car elevator system and includes a floor-recognition abnormality detector to detect, with respect to one of the cars, a floor recognition abnormality that at least one of a car position and floor information cannot be normally recognized, a terminal-floor driving mechanism to make, on the basis of a notification of floor-recognition abnormality information detected by the floor-recognition abnormality detector, the other one of the cars travel to a terminal floor in a direction opposite to a direction toward the one of the cars, and a floor-recognition-abnormality correcting-operation mechanism to perform, on the basis of terminal-floor traveling information from the terminal-floor driving mechanism, a floor-recognition-abnormality correcting-operation to correct the floor recognition abnormality of the one of the cars; therefore, an operation to recover from the abnormality can be safely performed without collision of the cars.

First claim

The invention claimed is:

1. An elevator system that is a one-shaft double-car elevator system provided with two elevator cars in a single hoist way so as to travel independently, and that performs, on the basis of abnormality detection of one of the cars, travel control of the other one of the cars, and performs, on the basis of the travel control of the other one of the cars, travel control of the one of the cars, comprising:
a first floor-recognition abnormality detector to detect, with respect to the one of the cars, a floor recognition abnormality that at least one of a car position and floor information cannot be normally recognized;
a first terminal-floor driver to make, on the basis of a notification of floor-recognition abnormality information detected by the first floor-recognition abnormality detector, the other one of the cars travel to a terminal floor in a direction opposite to a direction toward the one of the cars; and
a first floor-recognition-abnormality correcting-operation unit to perform, on the basis of terminal-floor traveling information from the first terminal-floor driver, a floor-recognition-abnormality correcting-operation to correct the floor recognition abnormality of the one of the cars.

2. The elevator system according to claim 1 , further comprising:
a second floor-recognition abnormality detector to detect, with respect to the other one of the cars, a floor recognition abnormality that at least one of a car position and floor information cannot be normally recognized;
a second terminal-floor driver to make, on the basis of a notification of floor-recognition abnormality information detected by the second floor-recognition abnormality detector, the one of the cars travel to a terminal floor in a direction opposite to a direction toward the other one of the cars; and
a second floor-recognition-abnormality correcting-operation unit to perform, on the basis of terminal-floor traveling information from the second terminal-floor driver, a floor-recognition-abnormality correcting operation to correct the floor recognition abnormality of the other one of the cars.

3. The elevator system according to claim 1 , further comprising:
a person detector to detect, when the first floor-recognition abnormality detector detects a floor recognition abnormality, whether or not a passenger is on board the other one of the cars;
a nearest floor stopper to control to stop at a nearest floor when the person detector detects a passenger; and
a door opening and closing controller to open a door, and close the door after a predetermined time.

4. The elevator system according to claim 2 , further comprising:
a person detector to detect, when the first floor-recognition abnormality detector detects a floor recognition abnormality, whether or not a passenger is on board the other one of the cars;
a nearest floor stopper to control to stop at a nearest floor when the person detector detects a passenger; and
a door opening and closing controller to open a door, and close the door after a predetermined time.

5. The elevator system according to claim 2 , wherein when each of the first floor-recognition abnormality detector and the second floor-recognition abnormality detector detects a floor recognition abnormality within a predetermined time, the first terminal floor driver makes the other one of the cars travel to a terminal floor in a direction opposite to a direction toward the one of the cars, and the second terminal floor driver makes the one of the cars travel to a terminal floor in a direction opposite to a direction toward the other one of the cars.

6. The elevator system according to claim 3 , wherein when each of the first floor-recognition abnormality detector and the second floor-recognition abnormality detector detects a floor recognition abnormality within a predetermined time, the first terminal-floor driver makes the other one of the cars travel to a terminal floor in a direction opposite to a direction toward the one of the cars, and the second terminal-floor driver makes the one of the cars travel to a terminal floor in a direction opposite to a direction toward the other one of the cars.

7. The elevator system according to claim 4 , wherein when each of the first floor-recognition abnormality detector and the second floor-recognition abnormality detector detects a floor recognition abnormality within a predetermined time, the first terminal-floor driver makes the other one of the cars travel to a terminal floor in a direction opposite to a direction toward the one of the cars, and the second terminal-floor driver makes the one of the cars travel to a terminal floor in a direction opposite to a direction toward the other one of the cars.

Assignees

• Mitsubishi Electric Corp

Inventors

• Yamagishi Koji

Classifications

• B66B5/0031

  for safety reasons · CPC title

• B66B1/06

  electric · CPC title

• B66B9/00

  Kinds or types of lifts in, or associated with, buildings or other structures (characterised by control systems B66B1/00; apparatus for raising or lowering persons on stages of theatres A63J5/12) · CPC title

• B66B1/2433

  For elevator systems with a single shaft and multiple cars · CPC title

• B66B5/02 Primary

  responsive to abnormal operating conditions · CPC title