An elevator includes an elevator shaft defined by surrounding walls and top and bottom end terminals; an elevator car vertically movable in the elevator shaft; elevator hoisting ropes coupled to the elevator car; an elevator hoisting machine including a traction sheave engaged with the elevator hoisting ropes; a traction monitor configured to determine traction of the hoisting machine; an electromechanical brake; a measuring apparatus adapted to provide speed data and position data of the elevator car; and a safety processor associated with the traction monitor and the measuring apparatus. The safety processor includes an ETLS threshold configured to decrease towards the top and/or bottom end terminal in accordance with the position of the elevator car. The ETSL threshold is adjusted on the basis of the traction of the hoisting machine. The safety processor is configured to determine an elevator car slowdown failure if the speed data meets or exceeds the ETSL threshold.

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, and the fixing block is located between the transmission gear and the fixing bolt.

The elevator comprises guide rails extending along a height of a shaft, a car and/or a counterweight moving upwards and downwards in the shaft and being glidingly supported on the guide rails. A stop block is attached to at least one guide rail in order to prevent movement of the car and/or the counterweight beyond the level of the stop block. The stop block comprises a buffer attached to a bottom plate. The buffer comprises a slot receiving a guide portion of the guide rail. The bottom plate supports the buffer on the guide rail.

The elevator comprises guide rails extending along a height of a shaft, a car and/or a counterweight moving upwards and downwards in the shaft and being glidingly supported on the guide rails. A stop block is attached to at least one guide rail in order to prevent movement of the car and/or the counterweight beyond the level of the stop block. The stop block comprises a buffer attached to a bottom plate. The buffer comprises a slot receiving a guide portion of the guide rail. The bottom plate supports the buffer on the guide rail.

An elevator buffer system includes a buffer (44), a frame (30) spaced above the buffer, a platform (48) spaced above the frame, and a pre-compressed pad device (52) disposed between the frame and the platform and engaged to one of the frame and the platform. The system is constructed to move between a non-strike position, where the pre-compressed pad device is spaced from the other of the frame and the platform; a mid-strike position, where the pre-compressed pad device is in contact with the other of the frame and the platform; and a full-strike position, where the pre-compressed pad device is further compressed against the other of the frame and the platform.

An elevator system includes an elevator shaft, an elevator car and a counterweight being coupled and being arranged in the elevator shaft for movement in opposite directions, and a buffer device arranged in a shaft pit of the elevator shaft. The buffer device limits the travel path of the counterweight and includes a buffer and a lifting device, wherein in an idle position of the lifting device an overtravel of the elevator car in a shaft head of the elevator shaft is enabled. The lifting device can be activated to an active position to limit the travel path of the counterweight and, between a shaft ceiling of the elevator shaft and the elevator car, a minimum distance for maintenance by personnel can be ensured. The lifting device is arranged between the buffer and the counterweight.

An elevator system includes an elevator shaft, an elevator car and a counterweight being coupled and being arranged in the elevator shaft for movement in opposite directions, and a buffer device arranged in a shaft pit of the elevator shaft. The buffer device limits the travel path of the counterweight and includes a buffer and a lifting device, wherein in an idle position of the lifting device an overtravel of the elevator car in a shaft head of the elevator shaft is enabled. The lifting device can be activated to an active position to limit the travel path of the counterweight and, between a shaft ceiling of the elevator shaft and the elevator car, a minimum distance for maintenance by personnel can be ensured. The lifting device is arranged between the buffer and the counterweight.

A method for constructing at least two elevators in a building under construction adapts the usable lifting heights of the elevators to an increasing height of the building, wherein each of the elevators is arranged in an elevator shaft of the building associated with the elevator and includes a drive platform having an elevator drive machine that supports and drives an elevator car and a counterweight by a traction sheave and at least one flexible suspension device. In order to adapt the usable lifting heights, lifting operations are performed in which in alternation one of the drive platforms is raised to a higher level in the associated elevator shaft and is locked there. A single lifting platform is temporarily fastened above the particular drive platform to be lifted to apply a lifting force required to raise the drive platform, which force is transferred to supporting elements of the elevator shaft.

An actuation device (24) for an elevator safety device (20) configured for moving in a longitudinal direction along a guide member (14, 15) of an elevator system (2), comprises a base (25) and a lever (26). The lever (26) is pivotably supported by the base (25) in a configuration allowing the lever (26) to pivot between an engaged position, in which at least a portion of the lever (26) or an element (27, 46) moving concurrently with the lever (26) contacts the guide member (14, 15); and a disengaged position, in which neither the lever (26) nor an element (27, 46) moving concurrently with the lever (26) contacts the guide member (14, 15). The lever (26) is also shiftable with respect to the base (25).

An elevator system and a multi-deck car for an elevator system. The elevator system has a multi-deck car that moves up and down along an elevator guide rail in an elevator shaft and comprises a first car and a second car connected to and located below the first car, wherein the second car is provided with a stop-support device configured to be operably engaged with a mating device mounted at a pre-set position on the elevator guide rail and/or the inner wall of the elevator shaft, for stopping and supporting the multi-deck car at the pre-set position upon engaging of the stop-support device and the mating device. The invention not only has advantages of quick and convenient operation, but also can effectively ensure the safety of both elevator equipment and field workers.