B66B7/1223

METHOD FOR ELECTRICAL ATTACHMENT OF A CONNECTING ELEMENT TO A BELT FOR AN ELEVATOR SYSTEM, AND CORRESPONDING BELT ASSEMBLY
20200277162 · 2020-09-03 ·

A method for establishing an electrical connection to an elevator system load-bearing belt uses a connecting element. The connecting element has a plurality of electrically conductive contact pins arranged at a distance from one another in an arrangement direction, and at least one of the contact pins is electrically connected to an electric line extending from the connecting element. The belt has a plurality of electrically conductive cables, embedded in an electrically insulating matrix material, and arranged at a distance from one another in the arrangement direction. The steps of the method include pressing the spacer pins in between adjacent cables in the belt in order to adjust the cables to a target position, and then pressing the contact pins of the connecting element into the cables in the belt. The spacer pins can be part of the connecting element or provided on a press-in tool to be used separately.

Method for monitoring elevator system suspension apparatus
10730720 · 2020-08-04 · ·

A method monitors at least one suspension apparatus in an elevator system, wherein the suspension apparatus includes at least one electrically conducting tension load carrying member that is surrounded by an electrically insulating jacket. The method includes the steps of: repeated determination of a value of an electrical characteristic of at least one tension load carrying member or of a group of tension load carrying members; establishment of a mean value on the basis of the determined values; and comparison of the mean value established with a reference value.

ELEVATOR WITH A MONITORING ARRANGEMENT FOR MONITORING AN INTEGRITY OF SUSPENSION MEMBERS WITH SEPARATED CIRCUITRIES
20200207583 · 2020-07-02 ·

An elevator suspension member arrangement includes a monitoring arrangement monitoring an integrity status of suspension members having electrically conductive cords. The monitoring arrangement includes: a generator generating phase shifted first and second alternating voltages; input and output connectors each establishing electrical contacts to cords in one of the suspension members; a voltage analyzer measuring and analyzing a neutral point voltage resulting from applying the first and second alternating voltages to first and second cords of the one suspension member; a supply circuitry having supply lines electrically interconnecting the generator with the input connectors; and a measurement circuitry including measurement lines electrically interconnecting the analyzer with at least one of the input connectors and the output connectors. The supply and measurement lines are separated from each other whereby disturbing influences of impedances through the supply circuitry is minimized due to voltage measurements being performed through the separate measurement circuitry.

METHOD FOR SELF-TESTING A MONITORING DEVICE MONITORING AN INTEGRITY STATUS OF A SUSPENSION MEMBER ARRANGEMENT IN AN ELEVATOR
20200172375 · 2020-06-04 ·

A method for self-testing a monitoring device monitoring an integrity status of an elevator suspension member arrangement includes the monitoring device having a voltage generation arrangement for generating electric voltages and applying the electric voltages to cords in suspension members of the suspension member arrangement. The monitoring device has a voltage analyzer arrangement for detecting a deterioration in the integrity status based on modifications in the applied electric voltages upon transmission through the cords. The method includes the steps of: specifically modifying the generated electric voltages to systematically induce modifications in the applied electric voltages upon transmission through the cords which, under normal operation conditions of the monitoring device, would be interpreted by the monitoring device as indicating the deterioration in the integrity status; verifying whether the deterioration in the integrity status is correctly detected; and initiating a self-test-failure-action if the deterioration in the integrity status is not correctly detected.

RESISTANCE-BASED INSPECTION OF ELEVATOR SYSTEM SUPPORT MEMBERS
20200122973 · 2020-04-23 ·

A method of wear detection of a supporting structure of an elevator system includes measuring an electrical resistance of at least one tension member of a supporting structure via a monitoring system, the supporting structure operably connected to an elevator car and one or more sheaves of an elevator system. A threshold resistance is determined utilizing one or more indicators of an actual traffic pattern of the elevator car. The measured electrical resistance is compared to the threshold resistance, the result of the comparison indicative of wear of the at least one tension member.

Elevator system
10611604 · 2020-04-07 · ·

An elevator system includes a suspension apparatus that has a plurality of tension members in a common jacket. The tension members of the suspension apparatus are electrically interconnected in an electric circuit which includes a current source or a voltage source and a measuring device. The measuring device is connected between a first group of the tension members and a second group of the tension members.

ELEVATOR SYSTEM COMPONENT ANALYSIS
20200102188 · 2020-04-02 ·

Methods and systems for component are provided. Aspects includes receiving, by a processor, an elevator component template for an elevator system, wherein the elevator component template comprises reference image data associated with one or more locations in the elevator system, receiving, from a camera, image data associated with at least one of the one or more locations in the elevator system, comparing the image data to the reference image data to determine a fault in an elevator component in the elevator system, and displaying, by a display, the fault in the elevator component in the elevator system.

Health monitoring of elevator system tension members
11884516 · 2024-01-30 · ·

A health monitoring system for an electrically-conductive tension member of an elevator system belt includes a transmitter including a transmitter coil configured for placement at the tension member, a receiver configured to be positioned at the tension member, and a controller operably connected to the transmitter and the receiver. The controller is configured to direct an alternating current through the transmitter coil resulting in the generation of a magnetic field and eddy currents at the transmitter coil, evaluate fluctuations in the magnetic field detected at the receiver. The fluctuations are indicative of wear or damage to the tension member.

HEALTH MONITORING OF ELEVATOR SYSTEM TENSION MEMBERS
20190389696 · 2019-12-26 ·

A health monitoring system for an electrically-conductive tension member of an elevator system belt includes a transmitter including a transmitter coil configured for placement at the tension member, a receiver configured to be positioned at the tension member, and a controller operably connected to the transmitter and the receiver. The controller is configured to direct an alternating current through the transmitter coil resulting in the generation of a magnetic field and eddy currents at the transmitter coil, evaluate fluctuations in the magnetic field detected at the receiver. The fluctuations are indicative of wear or damage to the tension member.

Elevator with a monitoring arrangement for monitoring an integrity of suspension members
11945691 · 2024-04-02 · ·

An elevator suspension member arrangement includes at least two suspension members having electrically conductive cords. A monitoring arrangement generates first and second alternating voltages phase shifted by 180? and includes a plurality of input connectors and output connectors electrically connected to the cords and a voltage analyzer arrangement analyzing a neutral point voltage resulting from applying the voltages to the cords. Each suspension member can have the cords connected in parallel between the input connector and the output connector or have two groups of the cords connected in series between the connectors with the groups connected to an interconnecting connector. A multiplexer arrangement can be used to selectively test each pair of suspension members when the suspension member arrangement includes more than two suspension members.