Otis Patente

An elevator machine (5) for driving an elevator car (6) in an elevator system (2) comprises a shaft (12) that extends along an axial direction (A) and includes a sheave portion (26) for coupling the shaft (12) to at least one tension member (3), in particular to at least one belt, that is coupled to the elevator car (6). The elevator machine (5) further comprises a motor (9) that is configured for rotationally driving the shaft (12) and a brake (20) for braking rotation of the shaft (12). The motor (9), the brake (20) and the sheave portion (26) are arranged along the axial direction (A) such that the brake (20) is arranged between the motor (9) and the sheave portion (26).

The present disclosure provides a coupling device, an elevator door operator system, an elevator system, and an adjustment method. The coupling device is intended for an elevator door operator system, wherein the coupling device comprises a base plate configured with a connection portion for connecting to a door coupler assembly of the elevator door operator system; and a belt hitch assembly movably arranged on the base plate and configured to clamp a belt of the elevator door operator system; wherein the coupling device comprises: a working state, in which the coupling device is driven by the belt to actuate the door coupler assembly; and an adjustment state, in which the belt hitch assembly moves relative to the base plate to adjust a length of the belt. The coupling device according to the embodiments of the present disclosure establishes driving transmission between the belt and the door coupler assembly in a compact manner, while also enabling adjustment of the belt length when required.

A transportable elevator system (2) comprises a hoistway (4), an elevator car (6) that is configured for moving along the hoistway (4) and an elevator machine (9) that is configured for driving the elevator car (6). The hoistway (4) comprises a plurality of hoistway walls (24) with each of the hoistway walls (24) comprising a frame (24a) that surrounds a wall portion (24b, 24c) or that is surrounded by a wall portion (24b, 24c), and a plurality of reinforcement elements (26, 28a, 28b, 38) that are mounted to the hoistway walls (24), in particular to the wall portions (24b, 24c) and/or to the frames (24a) of the hoistway walls (24), such as to extend in a horizontal direction when the hoistway (4) is oriented in an upright position. The elevator car (6) and the elevator machine (9) are installed in the hoistway (4) forming an integrated elevator system (2) that is transportable to a desired installation site.

A system includes at least one suspension member that facilitates movement of an elevator car within a hoistway and at least one connector that couples the at least one suspension member to a monitoring device. A chip is associated with at least one of the suspension member and the connector and includes identifier information associated with the at least one suspension member. The chip is configured to track and communicate a number of cycles of the at least one suspension member to the monitoring device.

An elevator system includes a motor configured to drive a traction sheave, the motor including motor windings; a brake configured to slow or stop rotation of the motor, the brake including a brake coil; a reverse bias diode connected in parallel with the brake coil through a latching relay; an external braking circuit connected to the motor windings through a brake contact; a controller configured to control the latching relay and the brake contact to control deceleration of an elevator car.

An elevator car cargo system includes two opposing sidewalls extending from a car floor, and a stacking rack including two or more sets of horizontally-extending rails to define two or more horizontally-extending tiers and one or more vertically-extending columns in the elevator car for loading and unloading cargo. a method of operating an elevator system includes driving an elevator car along a hoistway. The elevator car includes two opposing sidewalls extending from a car floor and a stacking rack including two or more sets of horizontally-extending rails to define two or more horizontally-extending tiers and one or more vertically-extending columns in the elevator car for loading and unloading cargo. The elevator car is stopped at a landing floor of the hoistway, and cargo is selectably loaded onto and/or unloaded from the stacking rack.

A tension device for an elevator car, an elevator car, and an elevator system are disclosed. The elevator car has a first side portion and a second side portion opposite to each other and a rear side portion opposite to a car door, and an elevator counterweight is arranged on a side close to the first side portion, wherein the tension device comprises a tension member, and a first end and a second end of the tension member are fixed to a first position and a second position on the elevator car respectively, to provide a first tensile force acting on the elevator car, and the first tensile force is substantially parallel to a longitudinal direction of the elevator car at the top of the elevator car and directed towards the rear side portion. The solutions of the disclosure can effectively solve the problem of an elevator car leaning forward towards a landing door in an elevator system with side-mounted counterweight, thereby enhancing the safety performance of the system, saving space and improving the smoothness of elevator car operation.

A hydraulic drive system (14) for driving an elevator system (2) comprises a fluid tank (20) for storing a hydraulic fluid (25); a hydraulic fluid supply conduit (22) that is configured for being fluidly coupled to a hydraulic cylinder (12a) of the elevator system (2); a fluid pump (26) that is configured for pumping hydraulic fluid (25) from the fluid tank (20) into the hydraulic fluid supply conduit (22); an electric power supply circuit (30) comprising at least one electric power storage device (34, 36) and configured for receiving single phase alternating current for charging the at least one electric power storage device (34, 36) and for selectively supplying electric power from the at least one electric power storage device (34, 36) to the fluid pump (26); a hydraulic fluid return conduit (24) that is configured for being fluidly coupled to the hydraulic cylinder (12a) for returning hydraulic fluid (25) from the hydraulic cylinder (12a) into the fluid tank (20); and an electric generator (52) that is configured for generating electric power from hydraulic fluid (25) flowing through the hydraulic fluid return conduit (24) and for supplying the generated electric power to the electric power supply circuit (30).

An elevator power system includes a drive including: an AC-DC converter configured to generate a DC voltage on a DC link; a capacitor connected across the DC link; a DC-AC inverter configured to convert the DC voltage to an AC drive signal to power a motor; a rescue unit including: a power converter configured to supply a DC output voltage to the DC link to pre-charge the capacitor; a controller in communication with the drive and the rescue unit, the controller configured to control the power converter to pre-charge the capacitor.

An elevator brake (20) for braking rotation of a shaft (12) in an elevator drive system (5), wherein the shaft (12) extends in an axial direction (A) and is rotatable around an axis of rotation (Z), comprises: a brake disc (24) mounted to the shaft (12) such as to rotate concurrently with the shaft (12); at least one movable plunger (30) that is linearly movable along the axial direction (A) between an engaged position, in which it engages the elevator brake (20), and an released position, in which it releases the elevator brake (20); an actuator that is configured for selectively moving the at least one movable plunger (30) between the engaged position and the released position; and a blocking mechanism (32, 36; 46; 46a, 46b) that is configured for preventing the at least one movable plunger (30) from moving from the engaged position into the released position if the at least one movable plunger (30) has traveled more than a predefined distance from the released position into the engaged position.

A connector comprises a housing defining an internal cavity and a plurality of contact members received within the internal cavity. Each contact member is resiliently biased to establish an electrically conductive connection with one or more tension members embedded in a suspension member.

Elevator systems include a traveling component (306) and a guide rail (308) within an elevator shaft. An overspeed safety system (300) is operably connected to the traveling component and includes a brake assembly (304) and an actuator assembly (302). A trigger element (320) is configured to release stored energy of a stored energy device (328) to cause engagement of a safety brake element (310) with the guide rail (308) to stop downward travel of the traveling component. When the safety brake element (310) is engaged with the guide rail (308), upward motion of the traveling component causes the safety brake element (310) to disengage from the guide rail (308) and return the stored energy device (328) to a state of stored energy.

An elevator connector includes a first body portion and a second body portion that is selectively moveable relative to the first body portion between an open position and a closed position. At least one metal contact is supported by one of the first body portion and the second body portion. A plurality of openings are formed within one of the first body portion and the second body portion, and a plurality of metal members are selectively insertable within the plurality of openings. The at least one metal contact engages at least one tension member of an elevator suspension member and each metal member contacts another tension member of the elevator suspension member to establish electrically conductive connections with associated tension members when the second body portion is in the closed position.

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 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.

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.

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.

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.

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.

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.

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).

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 present disclosure relates to the technologies of elevators, and in particular, to a method and an apparatus for analyzing an out-of-service event of an elevator system, a non-transitory computer-readable storage medium for storing computer programs/instructions for implementing the method, and a computer program product. According to one aspect of the present disclosure, a method for analyzing an out-of-service event of an elevator system is provided. In response to the occurrence of an out-of-service event, the aforementioned method generates a first feature, a second feature, and a third feature, and uses a first machine learning model to determine the necessity of handling the out-of-service event based on the first feature, the second feature, and the third feature. In the aforementioned method, the first feature is used to describe the likelihood of equipment failure occurring in the elevator system, the second feature is used to describe the equipment failure occurrence characteristics of a reference elevator system with a similar operational environment to the elevator system, and the third feature is used to describe the equipment failure occurrence characteristics of the elevator system.

An elevator car (6) comprises a support frame (48) that is provided at the top of the elevator car (6), wherein the support frame (48) comprises at least two longitudinal beams (32a-32d) extending basically parallel to each other in a longitudinal direction (L); and at least two transverse beams (33a-33d) attached to the longitudinal beams (32a-32d) and extending basically parallel to each other in a transverse direction (T) that is oriented transversely, in particular perpendicularly, to the longitudinal direction (L), such that the two of the least two longitudinal beams (32a-32d) and the two of the least two transverse beams (33a-33d) define a working opening (25) having predefined transverse working opening dimensions (x,y) that are independent of the dimensions (A, B) of the elevator car (6), the working opening (25) allowing a mechanic (50) to access at least one component (52) that is located above or on top of the elevator car (6) from inside the elevator car (6).

The present disclosure relates to an elevator technology, and in particular to a device and method for brake control. According to one aspect of the present disclosure, there is provided a device for brake control. The device comprises a first branch circuit and a second branch circuit connected in parallel with the first branch circuit. The first branch circuit and the second branch circuit comprise a first brake coil and a first switching element connected in series and a second brake coil and a second switching element connected in series, respectively. The device further comprises a third switching element connected between a power supply and the first branch circuit and the second branch circuit, which is configured to connect or disconnect the power supply with the first branch circuit and the second branch circuit in response to the state of an elevator safety chain. In the device, when the power supply is connected with the first branch circuit and the second branch circuit, the supply of power from the power supply to the first brake coil and the supply of power from the power supply to the second brake coil are controlled by the first switching element and the second switching element, respectively. In particular, control signals for the first switching element and the second switching element comprise a pulse width modulation signal.

An elevator car is provided and includes a body and an actuation system. The body includes a floor, sidewalls and a ceiling movable relative to the sidewalls. The actuation system is coupled with the ceiling and operable to raise and lower the ceiling.

The present disclosure relates to a pit buffer stand (5) for an elevator system (1). The pit buffer stand (5) comprises a first portion (510) for being fixed to a floor of a hoistway (2), a second portion (520) that forms a support for a counterweight (4) of the elevator system (1) in a maintenance mode of the elevator system (1), and a telescopic bar (530) configured for connecting the first portion (510) and the second portion (520) with each other. The disclosure also relates to an elevator system and a method of using a pit buffer stand (5) for maintaining an elevator system.

An assembly and method includes mounting at least one slider for linear movement with a belt that moves at least one elevator door between an open position and a closed position, and positioning a locking linkage to interact with the slider. The locking linkage and the slider contact each other to move the belt and unlock at least one car door connecting member prior to moving the elevator door to the open position.

The disclosure relates to a linkage operating device for an elevator system and an elevator system. The linkage operating device comprises: a base, arranged on an elevator car; a detection portion, arranged on the elevator car and connected to a controller in the elevator system; and an operating portion, configured to be operatively engaged with the base at least in a first position or a second position, wherein the operating portion is in the first position during normal operation of the elevator system, and when the operating portion is operated to disengage from the first position, the detection portion generates a first signal to be provided to the controller to control the elevator system into a stop state; and when the operating portion is operated to be in the second position, the detection portion generates a second signal, and when the detection portion detects that a protective device located at a top of the elevator car is in a working position and defines a car roof protection area, the detection portion generates a third signal for the controller to control the elevator system into a maintenance state according to the second and third signals, and the operating portion is configured to come into contact with a blocking device located in a preset position in an elevator hoistway to prevent the elevator car from travelling when the elevator car is running in the maintenance state.

A belt of an elevator system includes one or more tension elements extending longitudinally along a length of the belt, and a flexible jacket at least partially enveloping the one or more tension elements. The jacket defines a traction side configured to be interactive with a traction sheave of the elevator system and a back side opposite the traction side. A tension element of the one or more tension elements is formed from a plurality of steel wires coated with a coating layer. The coating layer comprises less than 50% Zinc.

An illustrative example embodiment of an elevator door assembly (20) includes a door panel (24) having at least one edge (28). A base (32) is configured to be received adjacent the edge of the door panel. An astragal (34) is configured to be at least partially received over the base such that the base holds the astragal in a selected position aligned with the edge of the door panel. The astragal is at least partially compressible for closing off an interface between the edge of the door panel and an adjacent surface.

The present disclosure rates to an elevator system (1) comprising a hoistway (2) extending in a longitudinal direction between a plurality of landings (8); and an elevator car (4) defining an interior space (10) and moveable within the hoistway (2). The elevator car (4) forms an opening (22), through which maintenance can be performed above the elevator car (4) from the interior space (10). The elevator system (1) further comprises a storage arranged outside the elevator car (4) and configured to store a mobile working platform (36), which is to be positioned in the interior space (10) for reaching through the opening (22) when performing maintenance.

Elevator system governors include a traction pulley having an engagement surface and a cable wound about the traction pulley that is configured to travel along the cable. An electromechanical locking mechanism is configured to selectively engage with the traction pulley to cause operation of a safety brake of an elevator system. The locking mechanism includes a hub assembly having inner and outer engagement hubs. The inner hub has an actuator connector connectable to a safety linkage and the outer hub has an engagement surface for selectively engaging with the engagement surface of the traction pulley. An actuator is configured to selectively apply force to the outer engagement hub into engagement such that the engagement surface of the outer engagement hub and the engagement surface of the traction pulley are engaged, and to cause rotation of the inner engagement hub.

Elevator system (2) comprising at least one elevator car (6) configured for traveling along at least one guide member (14) that extends in a hoistway (4) between a plurality of landings (8); and an elevator car tracking system configured for determining and tracking the position of the at least one elevator car (6) in the hoistway (4). The elevator car tracking system comprises a first position detection system configured for detecting the position of the at least one elevator car (6) with a first accuracy, wherein the first position detection system is in particular configured for detecting the position of the at least one elevator car (6) at every position in the hoistway (4) that can be reached by the at least one elevator car (6); and a second position detection system configured for detecting the position of the at least one elevator car (6) with a second accuracy that is more accurate than the first accuracy when the at least one elevator car (6) is located in a fine tracking zone (50) that is defined in a vicinity of at least one of the landings (8).

A system having: devices, each having a device controller and a sensor operationally couped to the device controller, the device controller transmits telemetry data including sensor data over a first communication channel; a system controller module that receives the telemetry data and apply the telemetry data as input to a generative AI model; a mobile device that communicates with the system controller module over a second communication channel to submit a query for an operational condition report; and wherein the system controller module that applies the query to the generative AI model as further input and to receive a report from the generative AI model in response to the query, the report includes identifying an occurrence of an alert condition for one or more of the devices having technical operational parameters outside of a threshold from processing the telemetry data, and forwarding the report to the mobile device.

A blocking device for an elevator system and an elevator system are disclosed. The blocking device comprises: a base, configured to be mounted in an elevator hoistway at a preset distance from a top or bottom of the elevator hoistway; a first signal member and a second signal member, fixed relative to the base; and a rod, pivotally fixed to the base with a first end connected to one end of a rope arranged in the elevator system, and configured such that: when the other end of the rope is operated to tighten the rope to pivot the rod to a first preset position, the rod triggers the first signal member to generate a first signal, and the elevator system is allowed to operate normally in response to the first signal; when the other end of the rope is operated to release the rope to pivot the rod to a second preset position by gravity, the rod triggers the second signal member to generate a second signal, and the elevator system enters a stopped state in response to the second signal.

A system is provided and includes an electromechanical system, a controller configured to control operations of the electromechanical system in accordance with commands and a multi-modal navigation system. The multi-modal navigation system is communicative with the controller to be receptive of information relating to the operations of the electromechanical system and is configured to control at least a subset of the operations of the electromechanical system in accordance with the information and at least a subset of the commands.

The present disclosure provides a car lock device and an elevator system. The car lock device is used for the elevator system comprising an elevator car and guide rails, wherein the car lock device comprises a locking unit fixedly connected to the elevator car and at least two paired limiting units fixed on the guide rails, the locking unit comprising a rotatable locking rod, and the locking unit having a first rotation position and a second rotation position, wherein in the first rotation position, the locking rod is decoupled from the guide rails to ensure the normal operation state of the elevator car, and in the second rotation position, the locking rod can interfere with the paired limiting units and be restricted between the paired limiting units, so that the elevator car cannot operate normally. The car lock device according to the embodiments of the present disclosure can conveniently and quickly switch between a maintenance mode and a normal operation mode and play respective roles in a cost-effective manner

An elevator system (2) comprises an elevator car (6) that is configured for traveling in a hoistway (4) along a longitudinal direction (L) between a plurality of landings (8); at least one longitudinal signal transmission component (25) made of a solid or flexible material and extending along the longitudinal direction (L) between the elevator car (6) and a defined position in the hoistway (4); and an elevator car position determining system that is configured for: transmitting a signal (S) through the at least one longitudinal signal transmission component (25); measuring a travel time of the signal (S) that is transmitted through the at least one longitudinal signal transmission component (25); and using the measured travel time for determining the current position of the elevator car (6) in the hoistway (4).