KR20000013366A - Elevator control device - Google Patents

Abstract

PURPOSE: An elevator control device is provided to secure the safety of a passenger by preventing the sliding of an elevator, and not to feel the uneasiness by preventing the shaking of the elevator by the expansion of a rope when getting in and out of the elevator. CONSTITUTION: The elevator control device comprises: a speed detector(1) to detect the rotating speed of a motor(3); a door open zone detector(4) to judge if it is the area to open a door of an elevator; a door control device(5) to open and to close the door; a microcomputer(7) to control the whole device according to the detected signal of the floor and the operating speed of the elevator; a power converter(2) to drive the motor(3) by obtaining a torque order from the microcomputer(7); and an electronic brake(6) to stop the motor(3) by obtaining a brake order from the microcomputer(7).

Description

Elevator counterweight

The present invention relates to an elevator control apparatus, and in particular, when the elevator reaches the floor and the motor is not driven and the brake function is lost, the elevator is fixed to prevent the elevator from slipping, thereby ensuring passenger safety. The present invention relates to an elevator control device that prevents shaking of a car due to expansion and contraction of a rope when getting on and off so as not to feel anxiety.

An elevator, a vertical means of transporting passengers or cargo within a building, is placed on top of a hoistway to drive a pulley on which a rope is caught by an electric motor to move the hoistway and counterweight connected by ropes up and down. It is stopped by a brake braking device provided between the motors.

In addition, when the freeway falls freely due to breakage of the rope or breakdown of the brake braking system, the freeway is forced to stop by the governor when the freefall speed exceeds 1.2 times the rated speed at the time of moving the car.

However, if the free fall speed of the elevator car is slipped within the speed at which the governor operates, a dangerous situation may occur in which the elevator car collides with a drop shock absorbing buffer installed at an upper part or a lower part of the hoistway.

1 is a block diagram showing a configuration of a conventional elevator control apparatus, and a speed detector 1 for detecting a rotational speed of a motor 3 as shown therein; A door opening zone detector 4 for determining whether the door of the elevator car is open; A door control device 5 which opens and closes the door; A microcomputer (7) for controlling the whole apparatus based on the traveling speed of the elevator and the floor detection signal; A power converter (2) for driving a motor (3) by receiving a torque command from the microcomputer (7); It consists of an electromagnetic brake (6) which stops the motor (3) by receiving a braking command from the microcomputer (7).

At this time, the microcomputer (7) includes: slip detection means (7a) for detecting the sliding movement of the elevator vehicle based on the traveling speed and the movement amount of the elevator vehicle when the torque command is disconnected and the braking command is output; Operation control means for generating a door opening command for the door control device, a door closing command, and a braking command for the electromagnetic brake when the vehicle is stopped, and a torque command for the power conversion device during operation of the vehicle; The operation and operation of the conventional device configured as described above, which is constituted by (7b), are as follows.

When the elevator enters the door open zone where the passenger can get on and off, the door open zone detector 4 sends a signal to the driving control means 7b of the microcomputer 7, and the driving control means 7b is a speed detector. When it is determined that the passenger should get on and off by combining the speed transmitted from (1) and the position of the lift vehicle transmitted by the door open zone detector 4, the torque command is cut off to stop the motor 3, By outputting a braking command to operate the electromagnetic brake 6 to stop the motor 3, the elevator car is stopped and the door is opened through the door control device 5 so that passengers can get on and off.

However, if the electromagnetic brake 6 breaks down due to deterioration over time or mechanical defects, and the braking force is lost, the stop-holding force of the elevator is not secured when the passenger is getting on and off, and the elevator lifts and lowers by sliding.

If the passenger tries to get on and off in this state, there is a possibility that a serious human accident occurs due to the passenger being caught between the platform and the platform.

At this time, the slip detection means 7a detects the slip by using the speed of the speed detector 1 and informs the driving control means 7b in order to prevent the danger of the passenger due to the falling or rising of the hoistway.

The driving control means 7b sends a separation command from the motor 3 to the electromagnetic brake 6, starts the motor 3 again, and moves to the end layer.

However, in the conventional apparatus, if any one of the motor, power converter, speed detector, and driving control means fails in the event of a brake failure, the elevator car cannot be prevented from rising or falling, which may pose a fatal hazard to the passenger. In addition, when the lift arrives on the floor and the door is opened, then the passengers start to get on and off, and when many passengers get on and off, there is a severe imbalance between the weight of the lift and the weight of the counterweight, which causes the extension of the rope, which causes the lift to rise and fall. There was a problem that would cause anxiety to the passengers to be shaken.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and when the elevator reaches the floor and the motor is not driven and the brake function is lost, the elevator is fixed to prevent the elevator from slipping. It is an object of the present invention to provide a control device of the elevator to ensure the safety of the passengers, and do not feel anxiety by preventing the shaking of the elevator car due to the expansion of the rope when getting on and off.

1 is a block diagram showing the configuration of a conventional elevator control apparatus.

Figure 2 is a block diagram showing the configuration of the elevator control apparatus of the present invention.

3 is a lay diagram showing a program function of a microcomputer as a relay circuit;

Figure 4 is a perspective view showing a schematic configuration of the elevator fixing device in FIG.

*** Description of the symbols for the main parts of the drawings ***

10: implantation level detector 20: elevator fixing device

30: elevator fixed drive device 20a: guide rail

20b: electromagnetic device 20c: lever

20d: spring 20e: stationary contact

20f: Lever fixing pin 20g: Contact signal line

20h: Station fixed command line

The present invention for achieving the above object, the speed detector for detecting the rotational speed of the motor; A door open zone detector for determining whether the door of the elevator is open; A door control device which opens and closes the door; A microcomputer that controls the entire apparatus based on the traveling speed of the lift and the floor detection signal; A power converter for driving a motor by receiving a torque command from the microcomputer; An elevator control device comprising an electronic brake for stopping a motor upon receiving a braking command from the microcomputer, comprising: an idea level detector for outputting a hoisting position to the microcomputer so that the hoisting vehicle is fixed at a position most suitable for getting on and off; A vehicle fixing device which prevents the vehicle from moving by fixing the vehicle with the building side by a control signal of the vehicle fixing driver; It is achieved by further comprising an elevator fixed drive device which is a most suitable position for getting on and off and drives the elevator fixed device by an elevator fixed command outputted from a microcomputer, and an embodiment according to the present invention is attached. When described in detail with reference to the drawings as follows.

Fig. 2 is a block diagram showing the configuration of the elevator control device of the present invention, and a speed detector 1 for detecting the rotational speed of the motor 3 as shown therein; A door opening zone detector 4 for determining whether the door of the elevator car is open; A door control device 5 which opens and closes the door; A microcomputer (7) for controlling the whole apparatus based on the traveling speed of the elevator and the floor detection signal; A power converter (2) for driving a motor (3) by receiving a torque command from the microcomputer (7); In an elevator control device composed of an electromagnetic brake (6) which stops the motor (3) by receiving a braking command from the microcomputer (7), the position of the elevator car is stopped so that the elevator car can be stopped at the most suitable position for getting on and off. An idea level detector 10 for outputting to a microcomputer; A vehicle fixing device 20 which prevents the vehicle from moving by fixing the vehicle with the building side by a control signal of the vehicle fixing drive device 30; It further comprises a vehicle fixed drive device 30 for driving the vehicle fixed device 20 by the vehicle fixed command outputted from the microcomputer 7 at a position most suitable for getting on and off. The operation and operation of the present invention will be described with reference to the accompanying drawings.

The operation of opening and closing the door after giving various instructions from the microcomputer 7 and moving it to the target floor for the elevator car is the same as before. However, in the present invention, the position of the elevator is measured more precisely to fix the elevator.

That is, the door open zone detector 4 notifies the microcomputer 7 of whether or not the vehicle has entered a position where the door can be opened as in the prior art, and the idea level detector 10 is more than the door open zone detector 4. The precise position sensor informs the microcomputer 7 of the position of the elevator so that the elevator can be stopped at the most suitable position for the passengers to get on and off.

When the microcomputer 7 determines that the vehicle stops at the position most suitable for the passengers to get on and off accordingly, the microcomputer 7 outputs the vehicle fixing command CL to the vehicle fixed driving device 30 to thereby operate the vehicle fixing device 20. Drive it.

Accordingly, the elevator fixing device 20 fixes the elevator with the guide rail 20a or the building side so that the elevator does not move.

3 is a lay diagram showing a programming function of the microcomputer 7 as a relay circuit, wherein 7a, 7b, and 7c are relay coils that are turned on when generating various signals and commands, and 7a is a vehicle fixed command CL. 7b is a relay coil for generating a door open command DO and 7c is a relay coil for generating a door close command DC.

Contact point A of contact signal DZ in the door zone and signal that the elevator stopped at the most suitable position for passengers to get on and off (LL) Contact point A of contact point B and motor start signal (RUN) and platform fixed command (CL *) If the contact point A of) is satisfied, the passenger car is fixed. (A contact is NO (NORMAL OPEN), B contact is NC (NORMAL CLOSE).)

In addition, the door DO * and the door DC * of the door are configured to operate only when the elevator stationary contact signal CL is input, thereby preventing the passenger from moving.

Figure 4 is a perspective view showing a schematic configuration of the elevator fixing device 20, as shown in the guide rail (20a) is installed on the building side to allow the elevator to operate normally along the hoistway; A lever 20c for fixing the elevator car and the guide rail; A spring 20d for fixing the elevator car at the time of power failure; An electromagnetic device (20b) for moving the lever (20c); When the elevator stationary command CL is output from the microcomputer 7 to the elevator stationary drive device 30 from the microcomputer 7, the elevator stationary contact point 20e determines whether the electronic device 20b operates normally. The electromagnetic device 20b of the vehicle fixing device 20 is driven, and when the electromagnetic device 20b is driven, the lever 20c is moved, so that the lever 20c is fixed to the guide rail 20a to move the elevator car. Do not let this.

As described above, the elevator control apparatus of the present invention secures the elevator by preventing the elevator from slipping when the elevator reaches the floor and the brake function is lost when the motor is not driven, thereby ensuring the safety of the passenger. When getting on and off, there is an effect to prevent the shaking of the elevator due to the expansion of the rope so as not to feel anxiety.

Claims (2)

A speed detector for detecting a rotational speed of the motor; A door open zone detector for determining whether the door of the elevator is open; A door control device which opens and closes the door; A microcomputer that controls the entire apparatus based on the traveling speed of the lift and the floor detection signal; A power converter for driving a motor by receiving a torque command from the microcomputer; An elevator control device comprising an electronic brake for stopping a motor upon receiving a braking command from the microcomputer, comprising: an idea level detector for outputting a hoisting position to the microcomputer so that the hoisting vehicle is fixed at a position most suitable for getting on and off; A vehicle fixing device which prevents the vehicle from moving by fixing the vehicle with the building side by a control signal of the vehicle fixing driver; An elevator control apparatus, characterized in that it further comprises a vehicle fixed driving device which is the most suitable position for getting on and off and drives the vehicle fixed device by the vehicle fixed command outputted from the microcomputer. According to claim 1, The vehicle fixing device includes: a guide rail installed on the building side to allow the vehicle to move normally along the hoistway; A lever for fixing the elevator car and the guide rail; A spring for fixing the elevator car in case of power failure; An electromagnetic device for moving the lever; Elevator control device, characterized in that consisting of a stationary fixed contact for determining whether the electromagnetic device is in normal operation.