A brake system for an elevator car, the brake system comprising a plurality of elevator car brakes, a plurality of electrical control units, and a plurality of electrical power supplies. Furthermore, at least two of the elevator car brakes are arranged to be operated by at least two of the electrical control units, and each one of the electrical control units is arranged to be supplied by at least one of the electrical power supplies. The brake system is configured so that at least two of the plurality of elevator car brakes are operable in case of a fault in any one or simultaneously in any two of the electrical control units and the electrical power supplies.

A brake system for an elevator car, the brake system comprising a plurality of elevator car brakes, a plurality of electrical control units, and a plurality of electrical power supplies. Furthermore, at least two of the elevator car brakes are arranged to be operated by at least two of the electrical control units, and each one of the electrical control units is arranged to be supplied by at least one of the electrical power supplies. The brake system is configured so that at least two of the plurality of elevator car brakes are operable in case of a fault in any one or simultaneously in any two of the electrical control units and the electrical power supplies.

The invention relates to a method for transporting construction material and/or equipment into and inside a building under construction, wherein the building under construction comprises plurality of vertically displaced floors, the method comprising providing a control system configured to automatically operate one or more transporting devices, including at least an elevator; providing a storage at the construction site of the building; and transporting into the storage at the construction site of the building under construction plurality of transport containers containing construction material and/or equipment; storing said transport containers in the storage; and delivering transport containers belonging to said plurality of transport containers from said storage to different destination floors, the delivering comprising obtaining an order to deliver a transport container, the order identifying the transport container to be delivered; and retrieving the transport container identified in the order from the storage; and moving said transport container at least horizontally to a container loading floor of the building under construction; and loading said transport container on the load receiving unit for being moved to its destination floor; and obtaining the destination floor information indicating the destination floor of said container; and moving the load receiving unit vertically in the elevator shaft to the destination floor of said transport container; and unloading said transport container from the load receiving unit to the destination floor of said transport container. The invention also relates to a method for constructing a building and an arrangement for transporting construction material, which implement the method for transporting construction material and/or equipment into and inside a building under construction.

The invention relates to a method for transporting construction material and/or equipment into and inside a building under construction, wherein the building under construction comprises plurality of vertically displaced floors, the method comprising providing a control system configured to automatically operate one or more transporting devices, including at least an elevator; providing a storage at the construction site of the building; and transporting into the storage at the construction site of the building under construction plurality of transport containers containing construction material and/or equipment; storing said transport containers in the storage; and delivering transport containers belonging to said plurality of transport containers from said storage to different destination floors, the delivering comprising obtaining an order to deliver a transport container, the order identifying the transport container to be delivered; and retrieving the transport container identified in the order from the storage; and moving said transport container at least horizontally to a container loading floor of the building under construction; and loading said transport container on the load receiving unit for being moved to its destination floor; and obtaining the destination floor information indicating the destination floor of said container; and moving the load receiving unit vertically in the elevator shaft to the destination floor of said transport container; and unloading said transport container from the load receiving unit to the destination floor of said transport container. The invention also relates to a method for constructing a building and an arrangement for transporting construction material, which implement the method for transporting construction material and/or equipment into and inside a building under construction.

Embodiments of the present disclosure are directed to a system for monitoring conditions of elevator braking assemblies. The system includes a processing device configured to receive an actual braking current data from the elevator braking assembly, determine a derivative, plot a derivative curve, determine a region of interest of the derivative curve that corresponds to an expected movement of the at least one mobile plate of the elevator braking assembly, determine whether a pair of inflection points occurred during the region of interest where one of the inflection points is a minimum point and the other is a maximum point, the maximum having a greater amplitude than the minimum point and occurring after the minimum point, and when the pair of inflection points does not occur during the region of interest, output an alert to the elevator controller to instruct the elevator controller to inhibit movement of the elevator cab.

Embodiments of the present disclosure are directed to a system for monitoring conditions of elevator braking assemblies. The system includes a processing device configured to receive an actual braking current data from the elevator braking assembly, determine a derivative, plot a derivative curve, determine a region of interest of the derivative curve that corresponds to an expected movement of the at least one mobile plate of the elevator braking assembly, determine whether a pair of inflection points occurred during the region of interest where one of the inflection points is a minimum point and the other is a maximum point, the maximum having a greater amplitude than the minimum point and occurring after the minimum point, and when the pair of inflection points does not occur during the region of interest, output an alert to the elevator controller to instruct the elevator controller to inhibit movement of the elevator cab.

A processor obtains an audio sample captured by an audio sensor associated with a device and/or image data captured by an image sensor associated with the device. The image data comprises a representation of one or more elevator buttons. The processor analyzes the audio sample to identify a floor name indicator in the audio sample and/or the image data to identify an activated elevator button from among the one or more elevator buttons represented by the image data; and determines a floor name based on the floor name indicator identified in the analyzed audio sample and/or a floor name indicator associated with the identified activated elevator button in accordance with the analyzed image data. The processor causes the determined floor name to be stored and/or provided for positioning purposes.

A processor obtains an audio sample captured by an audio sensor associated with a device and/or image data captured by an image sensor associated with the device. The image data comprises a representation of one or more elevator buttons. The processor analyzes the audio sample to identify a floor name indicator in the audio sample and/or the image data to identify an activated elevator button from among the one or more elevator buttons represented by the image data; and determines a floor name based on the floor name indicator identified in the analyzed audio sample and/or a floor name indicator associated with the identified activated elevator button in accordance with the analyzed image data. The processor causes the determined floor name to be stored and/or provided for positioning purposes.

A low power consumption elevator brake includes the device body and the collection box located on the inner side of the device body. The bottom of the device body is installed with a base, and the side of the base is provided with a collection tank. The top of the device body is connected with a vacuum pipe connected to the collection tank. The top of the vacuum pipe is provided with an interception module. The side of the base is connected with an air outlet pipe connected to the collection tank. The air outlet pipe is provided with an exhaust fan, and the base is provided with a filter module through the collection tank.

A landing lever assembly of a pneumatic vacuum elevator is disclosed. The assembly includes a landing lever plate coupled on a roof of an elevator cabin. The assembly also includes a locking plate coupled to the landing lever plate using a plurality of support plates. The assembly further includes a solenoid valve disposed on the landing lever plate and mechanically coupled to the locking plate using a guide pin, where the guide pin is configured to actuate the locking plate by sliding within the solenoid valve, in at least one operational mode, based on an activation signal received from a magnetic sensor.