Otis

The present disclosure provides a lock hook assembly, a door hanging plate assembly, a hall door lock device, and an elevator system. A lock hook assembly is used for a door hanging plate assembly of a hall door lock device of an elevator system, wherein the lock hook assembly comprises a lock hook capable of moving along with the movement of a first hall door of the elevator system and a latch fixedly arranged or capable of moving along with the movement of a second hall door of the elevator system, wherein the lock hook is configured with a hook portion and a rolling body disposed on the hook portion, and the latch comprises a main body portion and an inclined portion inclined relative to the main body portion, wherein the main body portion has an accommodating space formed therein, and during the closing process of the first hall door and the second hall door, the rolling body can engage in rolling friction with the inclined portion, and in the closed state of the first hall door and the second hall door, the hook portion is engaged with the accommodating space. The lock hook assembly according to the embodiments of the present disclosure can reduce friction during the engagement between the lock hook and the latch in a cost-effective manner, thereby meeting the closing operation requirements specified by the Standard.

The present disclosure relates to an elevator technology, and in particular to a method and device for providing hoistway access safety in an elevator system, and an elevator system comprising the device. In a method for providing hoistway access safety in an elevator system according to one aspect of the present disclosure, the elevator system comprises a plurality of landing door switches, which are grouped to construct a plurality of safety chains. In this method, the elevator system is enabled to enter a first operation mode that prohibits car movement, in response to an event of at least two safety chains of the plurality of safety chains entering a disconnected state. Then, the elevator system is enabled to enter a second operation mode that causes the car to reach a safety position, in response to an event of the plurality of safety chains entering a closed state. The safety position is determined based on the position where the car stops when the event of the plurality of safety chains entering a closed state occurs.

An elevator car roof protection device, an elevator car, and an elevator system are disclosed. The elevator car roof protection device comprises: a guardrail arranged on a roof of an elevator car and defining a protective area, wherein the guardrail is configured to be movable in a vertical direction relative to the roof under power drive such that the guardrail is adjustable to have different heights corresponding to different states of an elevator system; a power portion arranged on the roof and configured to provide the power to the guardrail; and a control portion arranged on the roof, wherein the control portion is electrically connected to the power portion and configured to control operation of the power portion. The use of the elevator car roof protection device can enhance the safety protection function, eliminate potential safety hazards, and improve the safety performance of an elevator system.

The present disclosure provides a contact switch 100, a safety door and an elevator system. The contact switch comprises a plug 1 and a socket 2, the plug comprising a contact head 11 configured in a plate shape, the socket comprising a housing 23, an elastic member 21 and a contact point 22 arranged in the housing, where the elastic member comprises an avoidance portion 211 and a free 212 end extending toward the contact head relative to the avoidance portion, and the contact point is fixed to the free end and extends toward the contact head relative to the free end, wherein, when the plug is inserted into the socket, the contact head contacts the contact point to turn on the contact switch and to be spaced apart from the avoidance portion. The contact switch according to the embodiments of the present disclosure effectively prevents the increase in resistance caused by the contact between the contact head and the elastic member when the plug is engaged with the socket in a cost-effective manner.

A controller for monitoring and controlling an elevator system, where the controller is operable to perform controller operations that include receiving machine-readable sensor output generated in response to movement of a traveling cable within a hoistway. The machine-readable sensor output is analyzed to determine a traveling cable operating condition. Responsive to a determination that the traveling cable operating condition includes a first type of traveling cable operating condition, an alert operation is executed. Responsive to a determination that the traveling cable operating condition includes a second type of traveling cable operating condition, an elevator control operation is executed. The elevator control operation is operable to reduce the movement of the traveling cable within the hoistway.

A governor assembly for an elevator car. The governor assembly includes a tripping sheave; a centrifugal tripping mechanism configured to rotate with the tripping sheave, the centrifugal tripping mechanism configured to initiate activation of an elevator car safety brake; the centrifugal tripping mechanism including a first weight member configured to move in response to rotational speed of the centrifugal tripping mechanism; and a first damper coupled to the first weight member.

Elevator ceiling access systems include a ceiling panel of an elevator car and a platform assembly movably attached to the ceiling panel. The platform assembly includes a platform and a ladder that is deployable from the platform. The platform assembly is deployable from a stowed state to a deployed state, and in the deployed state a position of the platform is adjustable within the elevator car and the platform is supported on one side by the ladder and on an opposite side by the ceiling panel.

A termination assembly for an elevator system having a plurality of tension members includes a termination housing, and a plurality of tension member retainers. Each tension member retainer is configured for connection to a corresponding tension member of the plurality of tension members. A flowable housing filler is positioned in the termination housing. The flowable housing filler is configured to equalize tensile forces acting on the plurality of tension members by flowing away from a first tension member retainer of a first tension member subjected to a first tensile force, and toward a second tension member retainer of a second tension member subjected to a second tensile force less than the first tensile force.

The disclosure relates to an elevator roller pressure adjustment assembly and adjustment method, an elevator guide shoe, and an elevator system. The elevator roller pressure adjustment assembly comprises: a contact member, fixed relative to at least one roller configured on an elevator car or counterweight, the roller being in rolling contact with an elevator guide rail and defining a running trajectory of the elevator car or counterweight along the elevator guide rail during normal operation of an elevator system; and a cooperating member, mounted at a preset position on the elevator guide rail and arranged outside the running trajectory without contacting the roller, and configured to come into pressure contact with the contact member to generate a force to be exerted to the contact member when the elevator system is in a preset state such that the elevator car or counterweight stops in proximity to the preset position, the force at least reducing a contact pressure between the roller and the elevator guide rail. The problems such as deformation or damage to the rollers caused by contact pressure with the elevator guide rail can be avoided or alleviated effectively by the solutions of the disclosure.

An elevator system (2) comprises an elevator car (6) that is configured for traveling in a hoistway (4) along a longitudinal direction (LD) between a plurality of landings (8); at least one guide rail (24) for guiding the elevator car (6), wherein the at least one guide rail (24) includes a U-shaped profile formed by a first leg (24a) and a second leg (24b) extending from a base (24c), wherein the U-shaped profile defines an inner space (23) of the U-shaped profile, and the first and second legs (24a, 24b) and the base (24c) have inner sides (25a-25c) facing towards the inner space (23); at least one guide member (36, 38) attached to the elevator car (6), wherein the at least one guide member (36, 38) contacts at least one guide surface of the at least one guide rail (24) for guiding the elevator car (6) along the guide rail (24); and at least one safety gear (40) attached to the elevator car (6), wherein the at least one safety gear (40) is configured for moving along the guide rail (24) and for engaging with at least one engagement surface of the at least one guide rail (24) in order to stop movement of the elevator car (6), when the at least one safety gear (40) is activated. The at least one guide surface of the at least one guide rail (24) is different from the at least one engagement surface of the at least one guide rail (24).