Inventio Ag

Karl Erny

Hans Kocher

Urs Lindegger

Rudolf Eckenstein

An elevator system includes an elevator car with a car door arranged on the elevator car. The car door includes at least one door leaf movable in a translatory manner, a guide rail fastened to the elevator car, which guide rail forms a guide for the translatory movement of the door leaf, and a drive assembly for driving the door leaf. The drive assembly is movably mounted on the elevator car.

Elevator car having a movable car door

An elevator shaft door sill installation apparatus includes first and second assembly jig parts mounted at gage guide rails and a laser arranged at one of the parts for aligning the sill in the vertical direction. The alignment of the sill in the horizontal direction is undertaken with a line set including at least two lines, a first line having a first run extending from the first part to a first sill corner and from there by a second run to the second part, and a second line extending from the second part to a second sill corner. If the lines are tightened and a marking between the first and second runs is at the first corner of the sill, the sill is aligned in the horizontal direction.

Aligning shaft doors of an elevator

A sill is aligned in the vertical direction on a laser line. The alignment of the sill in the horizontal direction is undertaken with a line set of an assembly jig. The line set includes at least two lines, for example a first line and a second line. The first line runs by a first run from the first part of the assembly jig to a third marking of the first line and from there by a second run to the second part of the assembly jig. If the lines are tightened and the marking is at one corner of the sill and the free end of the second line at the other corner of the sill, the sill is aligned in horizontal direction.

A method for monitoring the operating state of an elevator drive having a brake includes the mounting of a sensor on a movable brake part. The sensor generates an output proportional to the extent of relative movement between the brake part upon which it is mounted and a fixed brake part. The sensor output is monitored to provide an indication of the operating state of the drive and may be combined with other data to provide indications of a variety of drive states.

Method for monitoring operating states of an elevator unit by sensing movable brake part

An elevator drive has a brake device with compression springs to actuate brake levers, and brake linings on a brake drum creating a braking force. A sensor is provided to detect the movement of a brake magnet armature tappet. A bracket is attached to the brake magnet tappet on one end and a distance piece carrying the sensor housing is arranged on the other end. A restoring lug is attached to the existing mechanical indicator. A monitor evaluates the sensor signal and turns off the elevator drive in the event of dangerous operational states via a safety circuit. The system allows the state of the brake device to be monitored. The more the brake linings wear off due to abrasion, the smaller the distance between the armature and the brake magnet housing. If the armature is in contact with the brake magnet housing, the braking ability of the brake linings is completely void.

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Holzhausern, Switzerland

Karl Erny