SU612886A1 - Drive control of lift cage sliding diir - Google Patents

Description

elevator fully closed; in fig. 3 - the same, with a fully open position.

The device includes a housing 1 mounted on an electric motor 2, the shaft of which is connected to the roller 3, and the last disk is made of a non-magnetic magnetic material 4, with magnets 5 fixed on one side and interacting when it rotates with a magnetically controlled sealed contact (reed switch 6), which is fixed to the housing 1, which is also the support of the roller 3 with the disk 4. The reed switch 6 is installed in the zone of action of the magnets 5 with the required clearance relative to the latter, the ria to the second side of the disk 4 there is a spiral groove 7 with which the cracker “is attached to the lever 9, which is mounted on the axis 10, mounted in the housing 1. On the same lever 9, adjustable stops I and 12 are installed, intended to act on the switches 13 and 14, which are fixed in the housing 1. The number of turns of the spiral the grooves 7 are selected with a somewhat higher number of revolutions of the shaft of the electric motor 2 necessary for moving the elevator door leaves from one extreme position to the other.

The device works as follows.

In the initial position, when the elevator door is fully closed, the switch 13 is not pressed by the stop 11 (on), the electric drive door opening circuit is ready for operation, and the switch 14 is pressed by the stop 12 (turned off), the electric door drive open circuit is closed.

When a door opening command is received from the elevator control station, an electric motor 2 is turned on, the shaft of which, together with the roller 3 and the disk 4, begins to rotate counterclockwise, and the biscuit 8, which interacts with the spiral groove 7 of the disk 4, moves away from the center of the disk, simultaneously turning a lever 9 around the axis 10. The stop 12 moves away from the stem of the switch 14, preparing the electrical drive actuation circuit to close the doors. The lever 9 rotates until the stop stops And does not press the switch shaft 13, which turns off the electric motor 2, and the rotation of the disk 4 stops. The door is open .

Upon receiving the command to close the doors, the electric motor 2 is turned on, the disk 4 rotates clockwise (see Fig. 3), rusk 8 moves towards the center of the disk 4 by turning the lever 9, the stop 11 releases the switch 13 shaft, preparing the drive electric circuit door opening. When the disk 4 rotates, the magnets 5, the passage past the reed switch 6 and acting on it alternately, close and open its contacts, included in the relay electrical circuit, which has a delay time for the dropout and keeps the electrical circuit in a closed state, since during which the contacts of the reed switch 6 are open, does not exceed the delay time of the relay. If an obstacle hits between the closing doors, for example a passenger is trapped, the movement of the doors slows down, the rotation of the disk 4 with the magnets 5 slows down simultaneously, and the time during which the contacts of the reed switch 6 are open, increases and exceeds the relay holding time, the latter breaks the electrical circuit for switching on the drive for closing and does not disconnect the circuit for opening the doors. After a time delay laid down in the scheme, the closing of the doors begins again. If the tension between the flaps remains, then the process is repeated. If there is no obstacle between the closing doors, the lever 9 turns until the stop 12 presses the rod of the switch 14, after which the electric motor is turned off, the door closes completely and a command is sent to the elevator control circuit to move the car.

Performing the device in a single case with a fastener on the latter, i.e., on one base part and a reed switch and a disk with magnets, significantly increases the reliability of the device, since the possibility of changing the gap between the disk with magnets and the reed switch and leaving the latter out of the area of magnets is eliminated .

Placing the door shut-off switches at the extreme positions on the device case, using the second side of the reverse mechanism disk to place the spiral groove on it to interact with the lever lever, on which adjustable stops are installed, which are conventional standard bolts instead of rather complicated pressure devices known door drives greatly simplify the design and improve the conditions of its maintenance during operation. In addition, the consumption of expensive drives (non-ferrous metal), flexible metalworkings and fittings to them is reduced.

Due to the fact that the device for controlling the drive of the doors of the elevator car is made in the form of a compact unit and is not part of the structural design of the drive, the design of the door drive is simplified and it can be used as a unified unit for any door drives that use electric motors. in contrast to the known devices of the same purpose, suitable only for the design of the drive for which it was designed.

Claims (1)

Invention Formula A device for controlling the drive of a 65 movable door of an elevator car, comprising