Abstract:
A braking device is operable to aid in braking a hoisted object relative to a guide member. The braking device includes a mounting structure connected to the hoisted object, and first and second brake pads positioned on the mounting structure on opposing sides of a passageway through which the guide member extends. The first and second brake pads each include a contact surface that is operable to frictionally engage the guide member. The second brake pad engages the mounting structure in a manner that enables the second brake pad to move relative to the mounting structure between a non-braking position and a braking position. The braking device includes a brake initiator that is selectively operable to initiate movement of the second brake pad from the non-braking position toward the braking position by selectively actuating an actuatable portion of the brake initiator from a non-deployed position to a deployed position.
Abstract:
A tension member verification system of an elevator system includes one or more identifier elements (62) located at the tension member (16). The one or more identifier elements (62) include one or more configuration parameters of the tension member (16). A detector (64) is positioned and configured to verify presence of the one or more identifier elements, and is configured to read the one or more configuration parameters of the tension member (16). An elevator system controller (66) is operably connected to the detector (64) and is configured to compare the detected one or more configuration parameters to stored configuration parameters stored at the elevator system controller (66), and take one or more actions in operation of the elevator system based on the result of the comparison.
Abstract:
An overspeed assembly (30) for use with a governor assembly (16) for limiting of an elevator system, the overspeed assembly includes a rod (32) movable relative to the governor assembly (16) in response to a speed of an elevator car (12) and a pin (36) coupled to the rod (32). The pin (36) is movable between a first position and a second position based on a direction of travel of the elevator car (12). The pin (36) is configured to engage a first component (44) to indicate a first overspeed condition when the elevator car (12) is travelling in a first direction and the pin (36) is configured to engage a second component (66) to indicate a second overspeed condition when the elevator car (12) is travelling in a second, opposite direction.
Abstract:
An illustrative example elevator system includes an elevator car, a machine that selectively causes movement of the elevator car, and a drive that controls the machine to control movement of the elevator car at an intended elevator car speed. The drive is configured to use information regarding operation of the machine to determine whether an abnormal passenger behavior (APB) condition exists that affects movement of the elevator car. The drive is configured to alter the elevator car speed when the APB condition exists.
Abstract:
An actuator assembly for an elevator governor system includes a governor for detecting an overspeed condition. Also included is a safety linkage actuating lever operatively coupled to the governor. Further included is at least one safety operatively coupled to the safety linkage actuating lever and configured to apply a braking force during an overspeed condition. Yet further included is a permanent magnet latch engaged with the safety linkage actuating lever, the permanent magnet latch preventing actuation of the safety by the safety linkage actuating lever during a normal speed condition. Also included is an electromagnetic component disposed proximate the safety linkage actuating lever and the permanent magnet latch and in operative communication with the governor, the electromagnetic component in an energized condition during the overspeed condition to overcome a force applied by the permanent magnet latch to the safety linkage actuating lever to actuate the safety.
Abstract:
A method of avoiding unnecessary safety brake actuation in an elevator system. The method includes determining whether a true overspeed or overacceleration condition of an elevator car is present. The method also includes activating the electronic safety actuator if a true overspeed or overacceleration condition of the elevator car.
Abstract:
An elevator governor rotor (100) comprises a central axis (500) and a plurality of pairs of lobes. Each pair of lobes comprises an inner lobe (110) and an outer lobe (112).
Abstract:
A method of avoiding inadvertent resetting of a safety brake (20) of an elevator system (12), the method comprising: obtaining data with at least one sensor associated with an electronic safety actuator (22); and determining whether resetting of a safety brake (20) is made based on an algorithm that compares the data obtained by the sensor(s) and a threshold condition, resetting of the safety brake (20) occurring if the threshold condition is exceeded for equal to or greater than a predetermined amount of time.