Abstract: An elevator machine assembly includes a motor and an elevator drive configured to control power supply to the motor. The elevator drive includes at least a plurality of converter switches and an energy storage device that is situated to be charged in response to the motor generating a back emf as the motor rotates in response to a torque applied to the motor when the elevator drive is not providing power to the motor. A short-circuiting module that is selectively coupled with the energy storage device through the converter switches selectively discharges the energy storage device to limit the back emf of the motor and a corresponding speed at which the motor rotates.

Abstract: An illustrative example embodiment of an elevator system includes an elevator car that is configured for movement along a path. An elevator car power supply is supported for movement with the elevator car and includes a plurality of power sources. An exchange station near the path is configured to remove, from the elevator car supply, a selected number of the power sources that have a capacity below a selected level and replace each of the removed number of the power sources with a replacement power source having a capacity above the selected level.

Abstract: A method and apparatus includes an indicator mark that is located on at least one tension member at a predetermined distance from a fixed point. A visual indication of tension member replacement is provided when the indicator mark approaches a specified distance from the fixed point after a tension member length adjustment.

Abstract: A system and method for determining elongation of suspension members in an elevator system that includes an elevator car that is supported for movement within a hoistway by at least one suspension member and a counterweight that is coupled to the elevator car with the at least one suspension member. A first time is determined when the first interactive element detects a presence of the elevator car. A second time is determined when the second interactive element detects a presence of the counterweight. A speed and a direction of the elevator car are also determined. Elongation of the at least one suspension member is then determined by comparing a time difference between the first time and the second time to an elongation threshold.

Abstract: A load-bearing assembly according to an example of the present disclosure includes at least one tension member. The tension member has a resin, reinforcement fibers, and at least one additive that provides a fire-resistance to the tension member. A jacket material covers the at least one tension member. An alternate load-bearing assembly and a method of making a load-bearing assembly are also disclosed.

Abstract: Elevator system governors include a housing, a first pulley, a second pulley, and a cable wound about the two pulleys. A target element is arranged on at least one of the pulleys and a motion sensor assembly is arranged to detect the target element and determine if an overspeed condition is present. An electromagnet is operably coupled to the motion sensor assembly that is configured to transition the electromagnet from a first electromagnetic state to a second electromagnetic state in response to a detected overspeed condition. A trigger arm is releasably connected to the electromagnet and configured to actuate a safety brake assembly with a biasing element arranged to bias the trigger arm into an actuated state with a magnetic force of the electromagnet being greater than a biasing force of the biasing element when the electromagnet is in the first electromagnetic state.

Abstract: An assembled passenger conveying system, a method of assembling the same and a modularized device. The assembled passenger conveying system includes at least two modularized devices, the at least two modularized devices are detachably connected to form a loading area, and power is supplied from one or more modularized devices to drive the loading area to travel on a conveying path of the assembled passenger conveying system.

Abstract: A termination includes a housing that defines an internal socket configured to receive an end of an elevator suspension member. The housing is formed as a unitary body that includes a first face plate, a second face plate, a first side plate extending between the first face plate and the second face plate, and a second side plate extending between the first face plate and the second face plate.

Abstract: An illustrative example embodiment of an elevator system includes an elevator car, a first transceiver supported on the elevator car, and a second transceiver in a preselected location where the first transceiver can wirelessly communicate with the second transceiver when the elevator car is situated in a corresponding location. The first transceiver wirelessly communicates with the second transceiver to transfer at least electrical power between the transceivers. An elevator car power storage device is supported on the elevator car. The elevator car power storage device is configured to store electrical power received by the first transceiver from the second transceiver. The elevator car power storage device is also configured to provide power to the first transceiver to be transferred to the second transceiver.

Abstract: An elevator drive configured to control power to an elevator motor includes a plurality of first (upper) inverter switches and a plurality of second (lower) inverter switches. A processor is configured to provide control signals to control operation of the inverter switches. A first signal buffer between the processor and the inverter switches is configured to selectively prevent any control signals from turning on any of the inverter switches when the motor should not receive power. A second signal buffer between the processor and the inverter switches is configured to selectively bypass the first signal buffer, prevent any control signals from turning on the first inverter switches, and allow a control signal from the processor to turn on the second inverter switches to provide motor braking.

Abstract: A method of learning a rescue time period by an elevator system (101). The elevator system (101) includes an elevator car (103) moved by a machine (111) and a machine brake (120), arranged such that braking of the machine (111) by the machine brake (120) brakes motion of the elevator car (103). The method includes releasing the machine brake (120) for at least one test time period, at the end of which the machine brake (120) is engaged, detecting a corresponding at least one maximum travel speed of the elevator car (103) reached as a result of releasing the machine brake (120) for each at least one test time period, checking whether each at least one maximum travel speed is an acceptable speed, and setting the rescue time period based upon said checking.

Abstract: An elevator safety device comprises a housing attachable to an elevator car or to an elevator counterweight of an elevator system, the housing comprising a passage for allowing a guide member to pass through. A brake shoe is attached to the housing and is located on a first side of the guide member passing through the passage. A spring assembly is arranged on a second of side of the guide member and comprises at least one leaf spring, the spring assembly having a fixed end, which is fixed to the housing, and an opposite free end, which is not fixed to the housing. The spring assembly extends at an angle with respect to the guide member, defining a tapered region between the guide member and the spring assembly, wherein the free end of the spring assembly is arranged closer to the guide member than the fixed end of the spring assembly. A roller is, at least in an activated condition of the elevator safety device, located within the tapered region defined by the spring assembly and the guide member.

Abstract: Elevator cars including a movable platform defining an elevator car floor, a ceiling access panel located in a ceiling of the elevator car, and a ceiling panel access system. The ceiling panel access system includes at least one movable support arranged within a vertical frame member and the at least one movable support is connected to the movable platform and arranged to move the movable platform vertically within the elevator car.

Abstract: An elevator system including: an elevator car configured to travel through an elevator shaft; a first guide beam extending vertically through the elevator shaft, the first guide beam including a first surface and a second surface opposite the first surface; a beam climber system configured to move the elevator car through the elevator shaft, the beam climber system including: a first wheel in contact with the first surface; and a first electric motor configured to rotate the first wheel; and a controller configured to determine wheel slippage in a low friction area along the first guide beam.

Abstract: A detection device and a detection method for an elevator display module, an elevator including the detection device, and a computer storage medium. The detection device includes: memory; a processor; an I/O interface, configured to be coupled with one or more electroluminescent devices of the elevator display module; a communication module; and a computer program stored on the memory and running on the processor, the running of the computer program causes: receiving a detection request signal for the elevator display module via the communication module; in response to the detection request signal, applying a detection signal on at least one of the electroluminescent devices via the I/O interface; obtaining an operating level associated with the detected electroluminescent device via the I/O interface; and determining whether the detected electroluminescent device is working normally according to a polarity of the operating level.

Abstract: An automatic conveyor device includes an entrance platform and an exit platform opposite to each other, and a series of steps running in a loop between the entrance platform and the exit platform; a platform footboard at the entrance platform or exit platform; a comb support plate connected to the platform footboard and slidable along guide rails of the platform footboard along a length direction; and one or more comb plates fixedly mounted onto the comb support plate.

Abstract: A safety control device (1) for a people conveyor (101) includes a first safety control channel (2) configured to output a first safety control signal in response to one or more input signals (10, 12, 14). A second safety control channel (4) is configured to output a second safety control signal in response to one or more input signals (10, 12, 14). An override control channel (6) is configured to monitor a health of the first and second safety control channels (2, 4) and determine whether a fault has occurred in either of the first or second safety control channels (2, 4). The override control channel (6) is configured to override the first or second safety control signal in response to a determination that a fault has occurred in the corresponding safety control channel (2, 4). The override prevents activation of one or more safety systems.

Abstract: A self-checking device and method for an elevator braking device and an elevator system. The self-checking device includes an inductance testing module configured to measure an electromagnetic brake coil inductance L of the braking device; and a processing module electrically connected to the inductance testing module, and storing a mathematical model of an air gap a between the movable plate and the static plate with respect to the brake coil inductance L in a brake state; the processing module is configured to execute a checking mode in the brake state of the braking device, and in the checking mode, the processing module receives a current inductance L0 measured by the inductance testing module, calculates a current air gap a0 based on the mathematical model stored, and determines a wear degree of the friction lining based on the current air gap a0 calculated.

Abstract: An automatic conveyor device including an entrance platform footboard, an exit platform footboard, and a series of steps running in a loop between the entrance platform footboard and the exit platform footboard; a first comb plate and a second comb plate respectively connected to the entrance platform footboard and the exit platform footboard through a comb support plate; and a first warning device disposed in the vicinity of the entrance platform footboard or the exit platform footboard, where the first warning device includes a projection device that projects a light beam along a width direction in the vicinity of the first comb plate or the second comb plate.