WO1999032387A1

WO1999032387A1 - Improved lift repair system

Info

Publication number: WO1999032387A1
Application number: PCT/ES1998/000239
Authority: WO
Inventors: José YELAMOS LOPEZ
Original assignee: Yelamos Lopez Jose
Priority date: 1997-12-19
Filing date: 1998-09-01
Publication date: 1999-07-01

Abstract

Improved lift repair system provided to correct the position of a lift cabin which is stopped between two storeys due to a breakdown or a failure of current supply. The system of the invention operates in case of emergency when a lift cabin is stopped between two storeys.

Description

IMPROVED ELEVATOR RESCUE SYSTEM

OBJECT OF THE INVENTION

The object of the present invention refers, as its own title indicates, to an improved elevator rescue system that acts when the elevator stops due to electrical breakdown or power failure.

BACKGROUND

The existing rescue systems on the market are composed of an auxiliary drive group, which comes into operation when the main drive group has suffered an electrical breakdown or has cut off the power supply, and a control device that activates said auxiliary drive system when the circumstance cited above occurs.

Said device is of the electro-mechanical type that is controlled by the movement of the elevator car. Being composed of mechanical elements with time and use, these elements deteriorate losing precision and safety in the general installation of the elevator.

DESCRIPTION OF THE INVENTION

In order to eliminate the inconveniences that elevator rescue systems presently have, the improved elevator rescue system has been developed in order to provide elevator installations with those used in all types of buildings, whether for homes, offices, industrial, etc.

The improved elevator rescue system is composed of an auxiliary drive group, similar to the main drive group, and an auxiliary control electrical circuit that acts so that, when the elevator car stops between two floors due to electric breakdown of the drive group main or by cutting the power supply, automatically or by activating the existing switch inside the cabin, the auxiliary drive group starts operating and moves said cabin to the nearest floor, either the upper or lower

When an electrical breakdown occurs or the power supply is suspended and the cabin is stopped outside the level of one of the floors, the elements that constitute the auxiliary control panel act as follows the time, run out of voltage and disconnect the contactor that feeds the general picture of the main driving group, so that said group is rendered useless, activates a safety loop that prevents the access doors to the cabin and those of the cabin itself from opening during the rescue maneuver of the same and closes the contact that provides power supply, from an accumulator to the auxiliary rescue system

The current of said accumulator feeds two magnetic switches located outside the cabin, so that whenever the stop is outside the level of any of the plants, one of said switches will remain within the scope of some metal screens that they are located between each floor in the elevator shaft, so that one of these two switches closes the auxiliary drive group circuit

Depending on the position of the cabin, the rising contactor or the descending contactor will be powered, the motor that drives the auxiliary drive unit that moves the cabin to the nearest plant will start up. Simultaneously open the contacts that supply voltage to the main panel of the lift and close the contact that provides voltage to a relay that releases the safety brake. This relay closes a contact that provides voltage to the common of the circuit breakers of the cabin to avoid voltage loss when the emergency button is stopped pressing if it is that there was

DETAILED DESCRIPTION OF THE DRAWINGS

End. 1 Electrical scheme of the rescue maneuver

PREFERRED EMBODIMENT OF THE INVENTION

For a better understanding of the object of the present invention, the work procedure of the elevator rescue system is described below. Improved When an electrical breakdown occurs or the power supply is suspended and the cabin is stopped outside the level of one of the plants, the timer (1), which remains without voltage, disconnects the contactor (3), which feeds the general panel ( 4), activates the safety loop (20) that prevents the doors from opening during the rescue maneuver of the same and closes the contact (2) that provides power supply, coming from the accumulator (5) to the auxiliary rescue system

The battery current (5) feeds the switches (6) and (6 ^' ) by passing through the one that is closed by the screens (7) or (7 ^' ) establishing the closing of the auxiliary circuit, as appropriate to the coil (8) of the rise contactor or the coil (9) of the drop contactor Said coils, the (8) or the (9) close the power contacts (10) or (11), depending on the case that feed the motor (12) which is the one that provides the movement for the movement of the cabin towards the nearest level Simultaneously opens the contacts (13) that feeds voltage to the general frame of the elevator and closes the contact (14) that provides voltage to the relay (15) that releases the brake (16) through the contacts (17) Said relay (15) closes the contact (18) that provides voltage to the common of the circuit breakers (6) and (6 ^' ) of the cabin for prevent the lack of voltage when the emergency button (19) is stopped pressing if there is one

Once the nature of the present invention has been sufficiently described, as well as a way of putting it into practice, it only remains to be added that as a whole and its component parts it is possible to introduce changes in form, materials and arrangement, as long as said alterations do not substantially vary the characteristics of the invention claimed below.

Claims

1.- Improved elevator rescue system to correct the position of the cabin of an elevator stopped due to breakdown or interruption of the power supply, between two floors, which is characterized by being made up of pairs of screens (7) and (7 ^' ) located on each floor of the building, two circuit breakers (6) and (6 ^' ), located outside the cabin capable of being activated by said screens (7) and (7 ^' ), because each switch coincides within its corresponding screen when the elevator is stopped due to a breakdown between two floors, either above or below it, because in the case of stopping the car, it is carried out above ground level, the automatic lowering switch (6) matches its corresponding screen (7), closing its contact and connecting the down contactor to descend to its normal level, because if the elevator stops below the normal level, the automatic up switch (6 ^' ) is within the magnetic field of its corresponding screen (7 ^' ) closing its contact and ascending the cabin to its normal level, because when the elevator car is at its normal stop level, the automatic lowering (6) and rising switches (6 ^' ) are kept out of their corresponding screens (7) and (7 ^' ) with their contacts open, the emergency maneuver being consequently without effect, and because the displacement of the elevator, in emergency maneuvers is carried out through of an auxiliary motor independent of the drive system (12) powered by an accumulator (5)

2.- Improved elevator rescue system to correct the position of the cabin of an elevator stopped due to breakdown or interruption of the power supply, between two floors, according to the previous claim, which is characterized by having a safety loop ( 20) that prevents the cabin from moving, during the rescue maneuver, with the doors open

3.- Improved elevator rescue system to correct the position of the cabin of an elevator stopped due to breakdown or power failure, between two floors