JP3286087B2 - Elevator rescue operation 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 elevator rescue operation device.

[0002]

2. Description of the Related Art When a power failure or a failure occurs during operation of an elevator, a car stops between floors, and passengers are trapped in the car. Therefore, in order to rescue such trapped passengers, Japanese Unexamined Patent Application Publication No. 1-75382 discloses that a car is connected to a battery or a rescue operation power supply via a rescue operation relay contact, so that the car can be located at the time of power failure or elevator failure. Rescue driving means for driving to the floor, passenger detection means for detecting the presence or absence of a passenger in the car, and a detection operation relay which is activated by the passenger detection output of the passenger detection means and turns on the detection operation relay contact. There was a description of a technology such as an elevator control device.

[0003]

According to the above prior art, rescue operation is performed only for an elevator in which a passenger is trapped in a car due to a power failure or a failure, and a battery or a power supply for rescue operation is provided to the failed elevator. In the above-described rescue operation of the related art performed by driving the electric motor, there is a problem that an elevator device is damaged, such as an overcurrent flowing through the electric motor due to a failure factor and burning.

[0004] It is an object of the present invention to provide an elevator rescue operation device for selecting a rescue operation that does not affect the damage to elevator equipment.

[0005]

In order to achieve the above object, the present invention provides a method for driving an electric motor by a battery or a power supply for rescue operation when an elevator is stopped due to a power failure or a failure, or reducing an unbalance load of a car and a counterweight. In an elevator rescue operation device for driving a car to the nearest floor by an electromagnetic brake operation for intermittently releasing a held electromagnetic brake and rescuing a passenger trapped in the car, a factor of the elevator stop is detected, and a rescue operation is performed. Rescue operation selecting means for selecting whether to perform the operation by driving the electric motor or operating the electromagnetic brake.

[0006]

With this configuration, the rescue operation for moving the car to the nearest floor is performed by driving the electric motor or stopping the electromagnetic brake depending on the factor of the stop of the elevator. As a result, damage to the elevator equipment due to rescue operation can be prevented.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

In the figure, in normal operation control of an elevator, power of a commercial power supply 1 is supplied to an operation control device 3 through a main switch 2. The operation control device 3 rotates the electric motor 4 according to various signals, and the hoist 5 is shaft-joined to the electric motor 4, and the car 6 and the counterweight 7 are connected to a sheave 5 A attached to the hoist 5. The car 6 is raised and lowered by wrapping the rope 8. The electromagnetic brake 9 mounted between the electric motor 4 and the hoisting machine 5 releases the electric current to bring the brake shoe 9A into contact with the brake drum 9B. The structure is such that the movement of the car 6 is stopped.

Further, when the commercial power supply 1 is supplied, the power source is energized, and the normally open contacts 10a1, 10a2, the normally closed contacts 10b1,
10b2, the power failure detection relay 10 and the main switch 2
Is turned on when the power supply is turned on, the main switch 11 having normally open contacts 11a1, 11a2 and normally closed contacts 11b1, 11b2 from the commercial power supply 1 and the voltage input to the operation control device 3 are detected, and a predetermined voltage is detected. It is energized at the time of voltage, and the normally closed contact 12b1
An input voltage detection relay 12 having .about.12b4 is provided.

The battery 13 converts a DC power supply into an AC power supply, rotates the motor 4 to operate the car 6 by operating the car 6, and intermittently sucks the electromagnetic brake 9 to connect the car 6 with the car 6. It is connected to the electromagnetic brake operation rescue operation device 15 that moves the car little by little by the unbalance load of the counterweight via a normally-open contact 18a, a normally-closed contact 21b, a normally-closed contact 18b, and a normally-open contact 21a to be described later. . Further, a motor drive rescue command relay 18 having contacts 16, 17 connected to the battery 13, a normally open contact 18a, and a normally closed contact 18b is connected in series,
Electromagnetic brake operation rescue instruction relays 21 having contacts 19 and 20 connected in parallel, a normally closed contact 21b, and a normally open contact 21a are connected in series. As an example of a specific configuration of the contact 16 as shown in FIG. 2, a normally connected contact 10a1, a normally closed contact 12b1, and a normally open contact 1
Normally closed contacts 10b1, 1 connected in series in parallel with 1a1
0b2, the normally open contact 11a2 is connected. As an example of a specific configuration of the contact 17, a normally-open contact 10a2 connected in series and a normally-closed contact 10b2, 12b4, 11b2 connected in series with the normally-closed contact 12b3, 11b1 are connected.

Next, the operation will be described.

Now, when a power failure occurs in the commercial power supply 1, the power failure detection relay 10 is deenergized and 13-18-11a2-12b2
The circuit -10b1-13 is formed, the motor drive detection relay 18 is energized, and the motor drive rescue operation device 14 is activated by the circuit 13-18a-21b-14-13, and the motor 4
Move the driving car 6 to the nearest floor to rescue the trapped passengers.

When the main switch 2 is opened due to a ground fault of a power line or the like, 13-21-11b1-12b3-10a2-
Thirteen circuits are formed, and the electromagnetic brake operation rescue relay 2
1 is energized, the electromagnetic brake operation rescue operation device 15 is activated by the circuit of 13-18b-21a-15-13, and the electromagnetic brake 9 is intermittently sucked, and the unbalance load of the weight balanced with the car 6 is set. Move the basket 6 to the nearest floor to rescue the passengers.

As described above, when the motor-driven rescue operation device 14 is activated when a confinement accident occurs due to a ground fault in the power line, damage to the elevator equipment such as burning of the motor 4 and burning of the battery 13 occurs. May be. In such a case, the present invention selects the rescue operation by the electromagnetic brake operation which does not affect the elevator equipment, depending on the factor of the stop of the elevator.

In this embodiment, the description has been given of the case where the elevator is stopped due to the power failure of the commercial power supply 1 and the opening of the main switch 2, but the cause of such a stop is not limited to this.

[0016]

According to the present invention, the rescue operation for moving the car to the nearest floor can be selected by a method of driving the electric motor or a method of operating the electromagnetic brake depending on the cause of the stop of the elevator. Therefore, it is possible to prevent the elevator equipment from being damaged by the rescue operation.

[Brief description of the drawings]

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

FIG. 2 is a main part circuit diagram of the present invention.

[Explanation of symbols]

 4 Electric Motor 9 Electromagnetic Brake 14 Motor Drive Rescue Operation Device 15 Electromagnetic Brake Operation Rescue Operation Device 18 Motor Drive Rescue Command Relay 21 Electromagnetic Brake Operation Rescue Command Relay

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-55-130472 (JP, A) JP-A-55-84785 (JP, A) JP-A-59-153769 (JP, A) 149159 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) B66B 5/02

Claims (1)

(57) [Claims] When an elevator stops due to a power failure or a failure, a car is driven by an electric motor driven by a battery or a rescue operation power supply, or an electromagnetic brake operation for intermittently releasing an electromagnetic brake that holds an unbalanced load of a car and a counterweight. In the elevator rescue operation device that drives the vehicle to the nearest floor and rescues the passengers trapped in the car, detects the factor of the elevator stop, and determines whether the rescue operation is performed by driving the electric motor or the electromagnetic brake. A rescue operation device for an elevator, comprising rescue operation selection means for selecting.