An elevator fire detection system (130) for early detection of smouldering and/or burning within an elevator system (100) is provided. A controller (112) is in electronic communication with at least one electronic nose detector (120) which is configured to receive a fluid mixture comprising an odorant, collect sensor data representative of the odorant, compare the sensor data to at least one olfactory reference profile, determine whether the odorant corresponds to the at least one olfactory reference profile and output an indicator signal to the controller (112) to indicate that the detected odorant corresponds to the at least one olfactory reference profile. The controller (112) after receiving the indicator signal effects a safety response action in the elevator system (100).

According to an aspect, there is provided a method for remote operation of a plurality of elevators, each of the plurality of elevators being coupled with a communication computer. The method comprises receiving, by a remote service system from the communication computer, a rescue request associated with an elevator; providing, by the remote service system, a verification to distinguish the elevator associated with the rescue request among the plurality of elevators; enabling, by the remote service system, a data connection with the communication computer to control the verified elevator; and performing, by the remote service system, a remote operation associated with the verified elevator via the enabled data connection.

The invention relates to an elevator system comprising: an elevator car; at least one motor operable in two modes wherein in the first mode the at least one motor is consuming electrical energy and in the second mode the at least on motor is generating electrical energy; at least one rechargeable battery coupled to the at least one motor; wherein the at least one rechargeable battery is configured to be charged with an energy generated by the at least one motor when the motor is in the second mode.

The current disclosure relates to a power system for feeding power into a vertical transportation arrangement. The power system comprises a first interface for connecting to a primary power source; a second interface for connecting to a secondary power source; and power controlling means for controlling feeding of power from the primary power source and/or the secondary power source to a motor for driving a vertical transportation device. The power system is characterized in that the power controlling means is configured to control feeding at least some of the power used by the motor during normal operation from the secondary power source. The current disclosure also relates to a method and vertical transportation arrangements.

A method for releasing safety gears of an elevator car or a counterweight of an elevator system, the elevator system including a stalling detector coupled to compensation roping associated with the elevator car or the counterweight and configured to detect an increased rope tension, includes preventing a stalling indication from the stalling detector during a rescue operation; and moving the elevator car in order to release the safety gears.

The invention relates to an elevator comprising an electric linear motor comprising at least one linear stator designed to be located in a fixed correlation to an environment, particularly building, and at least one mover designed for connection with an elevator car to be moved and co-acting with the stator to move the car, which motor comprises a stator beam supporting said at least one stator, which stator beam has at least one side face carrying ferromagnetic poles of said stator spaced apart by a pitch, and which mover comprises at least one counter-face facing said side face(s) of the stator beam, in which counter-face electro-magnetic components of the mover are arranged to co-act with the ferromagnetic poles mounted on the stator beam, which elevator comprises an elevator brake. According to the invention the side face of the stator beam facing the mover and/or the counter face of the mover facing the side face of the stator beam comprise(s) a brake surface which form(s) the brake interface of the elevator brake.

A device for cage jamming buffer of large-tonnage hoisting system of ultra-deep shaft is provided. End cage jamming buffer mechanisms are added at both ends of an automatic wire rope tension balancing mechanism, wherein the end cage jamming buffer mechanisms include an end buffer module and an end fixing module, and the end buffer module and the end fixing module are respectively mounted on shafts of the automatic wire rope tension balancing mechanisms at two ends. The end buffer module mainly consists of a buffer bearing pedestal, a limit block, a buffer block, and a stop block sequentially mounted on the shaft of the automatic wire rope tension balancing mechanism at one end. The end fixing module mainly consists of a fixing bearing pedestal and a fixing block mounted on the shaft, wherein the fixing bearing pedestal is connected to a transmission gear by an adjusting bolt.

Provided is an elevator door control device capable of safely closing a door of an elevator when a power failure occurs and preventing an extra burden from being placed on a rescue worker. The elevator door control device according to the present invention includes a door dynamic braking control circuit (15) that performs, when a power failure occurs in a condition in which the door of the elevator is in an intermediate position, dynamic braking control of a door motor (2) until full close of the door is detected and deactivates the dynamic braking control when the full close of the door is detected.

An elevator installation may include at least one car that is displaceable in an elevator shaft; a first supply unit for supplying the car with energy, material, and/or data; and an interchange arrangement for interchanging the first supply unit to the car whereby the first supply unit is removed from or attached to the car during ongoing operation of the elevator installation. The interchange arrangement may be configured to remove and/or attached one or more supply units from the car during a regular door-opening cycle where the car stops at a floor of a building in which the elevator installation is installed. A duration of time required to remove the first supply unit from the car, or alternatively add the first supply unit to the car, is less than a duration of time required for a regular door-opening cycle.

An elevator automatic rescue and energy-saving control method, the method comprising: when the power grid supplies power normally, selecting a single current in a three-phase power grid (9) as an AC power supply for an elevator control system (10); controlling a DC-DC converter (2) to charge the super capacitor module (1) connected to the DC-DC converter to a specified standby electric energy level; and when the power grid is suddenly interrupted, selecting to use the electric energy stored in the super capacitor module (1) as a rescue electric energy for a traction motor (7) and the elevator control system (10). The described method uses a super capacitor module, so that a stable and reliable elevator rescue power supply is provided when the power grid is suddenly interrupted, and the regenerative electric energy dissipated during elevator braking operation is stored and utilized during elevator operation, thereby conserving energy.