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:
An elevator brake wedge is provided and includes an elongate body (40) having first and second generally opposed major surfaces (41,42) and first and second generally opposed minor surfaces (43, 44). The second minor surface (44) has a greater length than the first minor surface (43). Each of the first and second major surfaces (41, 42) extends between corresponding first and second ends of the first and second minor surfaces (43, 44), respectively. The second major surface (42) defines low-friction film securing grooves (45) extending from a plane of the second major surface (42) into the elongate body (40).
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 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:
Elevator systems are described that include a traveling component movable along a guide rail 309 and an overspeed safety system 300. The safety system includes a safety brake 314 connected to an electromechanical actuator 316. A safety brake element 334 of the safety brake is operable to engage with the guide rail to stop the traveling component. The electromechanical actuator includes a frame 310, a first magnetic element operably connected to the safety brake, a second magnetic element movably attached to the frame, and a third magnetic element fixedly attached to the frame. The second magnetic element is movable to urge the first magnetic element from a first position toward a second position. In the second position, the first magnetic element is located proximate the third magnetic element. As the first magnetic element transitions from the first position to the second position, the safety brake element is actuated into engagement with the guide rail.
Abstract:
An illustrative example elevator governor (30) includes at least one flyweight (34, 36, 38) configured to move a first distance between an initial position corresponding to a zero speed condition and an activation position corresponding to an elevator speed that reaches a predefined threshold. A biasing member (44, 46, 48) biases the at least one flyweight toward the initial position. The biasing member is configured to allow the at least one flyweight to reach the activation position when the elevator speed reaches the predefined threshold. A flyweight position member (60) sets a rest position of the at least one flyweight in the zero speed condition that is between the initial position and the activation position. A range of motion of the at least one flyweight is limited to a second, shorter distance between the rest position and the activation position.
Abstract:
The present invention provides a remote trigger device, a speed limiter assembly having the same and an elevator. The remote trigger device for the speed limiter assembly comprises: an actuator; and a rotating component, the rotating component being capable of rotating around a rotating axis in a rotating plane, the rotating component being actuated by the actuator to rotate from an idle position to a working position. During rotation of the speed limiter assembly, at the idle position, the rotating component is kept separated from an over-speed locking mechanism of the speed limiter assembly, and at the working position, the rotating component toggles a trigger member of the over-speed locking mechanism of the speed limiter assembly to trigger the speed limiter assembly. The structure of the remote trigger device according to the present invention is compact and simple.
Abstract:
The present invention provides a governor assembly and an elevator, wherein the governor assembly includes: a support; a first axle rotatably supported by the support; a main pulley rotatably mounted on the first axle relative to the first axle; a first guide pulley near the main pulley; a first safety device actuated by the rotation of the first axle; and a centrifugal tripping mechanism which enables, when a rotating speed of the main pulley exceeds a preset value, the main pulley and the first axle to be coupled and rotate together. The governor assembly according to the present invention is of a compact structure and is applicable to a small mounting space.
Abstract:
A governor assembly (16) is provided including a sheave (18) rotatably mounted on a shaft and a ratchet disc (30) mounted on the shaft. Rotation of the ratchet disc (30) is restricted. An overspeed assembly (40) includes a swing jaw (42) mounted to the sheave (18). The swing jaw (42) is movable between a normal position and a tripped position. The swing jaw (42) is biased into the tripped position. When the swing jaw (42) is in the tripped position, rotation of the sheave (18) in a first direction is restricted. A tripping lever (44) is pivotally mounted to the sheave (18) and is configured to cooperate with the swing jaw (42). Rotation of the sheave (18) in a second, opposite direction is configured to automatically move the swing jaw (42) against its bias to the normal position.