Disclosed is a hydraulic buffer energy storage device for an over-discharged hoist skip in a vertical shaft. The hydraulic buffer energy storage device for an over-discharged hoist skip in a vertical shaft comprises a vertical shaft, where a hoist skip is hung on an inner side of the vertical shaft, and a hydraulic buffer mechanism is arranged on the inner side of the vertical shaft; the hoist skip is positioned above the hydraulic buffer mechanism; the hydraulic buffer mechanism is communicated with an accumulator group, a pressure relief part and an oil replenishing part through an oil pipeline; the accumulator group is communicated with an energy storage part through an oil pipeline; the energy storage part, the pressure relief part and the oil replenishing part are respectively communicated with an oil tank through oil pipelines, the hydraulic buffer mechanism is connected with a displacement sensor.

Disclosed is a hydraulic buffer energy storage device for an over-discharged hoist skip in a vertical shaft. The hydraulic buffer energy storage device for an over-discharged hoist skip in a vertical shaft comprises a vertical shaft, where a hoist skip is hung on an inner side of the vertical shaft, and a hydraulic buffer mechanism is arranged on the inner side of the vertical shaft; the hoist skip is positioned above the hydraulic buffer mechanism; the hydraulic buffer mechanism is communicated with an accumulator group, a pressure relief part and an oil replenishing part through an oil pipeline; the accumulator group is communicated with an energy storage part through an oil pipeline; the energy storage part, the pressure relief part and the oil replenishing part are respectively communicated with an oil tank through oil pipelines, the hydraulic buffer mechanism is connected with a displacement sensor.

An elevator system includes a first elevator car (14A) supported for vertical movement in a lane (11, 13, 15, 17) of a hoistway (11). A second elevator car (14B) is configured to operate and move vertically in the lane (11, 13, 15, 17) below the first elevator car (14A) independently thereof. At least one buffering device (34) is supported on at least one of the elevator cars (14) to absorb energy upon contact between each buffering device (034) and the other elevator car (14).

An elevator buffering device and an elevator system. The elevator buffering device includes a multi-stage buffer including: a body bracket; and a plurality of buffering elements mounted on the body bracket; wherein each of the buffering elements is at different heights when they are driven to operating positions in a vertical direction; a drive mechanism including: a power source for powering the drive mechanism; and a telescopic push rod pivotally connected to the body bracket; and a control element for controlling a telescopic length of the telescopic push rod of the drive mechanism so that one of the plurality of buffering elements on the body bracket is driven to the operating position.

An elevator device including on-car presence detection units, each being configured to detect presence of a person on top of a corresponding one of cars, on-car operation panels, each to be operated for a manual operation of the corresponding one of cars, and an elevator control device including a car operation approval unit configured to approve or cancel the operation on the on-car operation panels. When the on-car presence detection units have detected the presence of persons on top of the plurality of cars, the operation on the on-car operation panels of all the cars is canceled by the car operation approval unit. When the on-car presence detection unit has detected the presence of a person on top of one of the plurality of cars, the car operation approval unit approves the operation on the on-car operation panel of any one of the plurality of cars.

An elevator buffering device and an elevator system. The elevator buffering device includes a multi-stage buffer including: a body bracket; and a plurality of buffering elements mounted on the body bracket; wherein each of the buffering elements is at different heights when they are driven to operating positions in a vertical direction; a drive mechanism including: a power source for powering the drive mechanism; and a telescopic push rod pivotally connected to the body bracket; and a control element for controlling a telescopic length of the telescopic push rod of the drive mechanism so that one of the plurality of buffering elements on the body bracket is driven to the operating position.

According to one embodiment of the present invention, there is provided a buffer cap for an elevator to be placed on an upper surface of a buffer provided below a counterweight for an elevator so as to be opposed to a lower surface of the counterweight, which is configured to restrict lowering of the counterweight, the buffer cap including: a support column; an upper plate provided to an upper end of the support column; and a lower plate provided to a lower end of the support column, wherein the support column is formed of flat plates, and each of the upper plate and the lower plate is formed of a flat plate, and wherein the flat plates for forming the support column, and the flat plates for the support column and the upper plate or the lower plate are fittable and disassemblable.

According to one embodiment of the present invention, there is provided a buffer cap for an elevator to be placed on an upper surface of a buffer provided below a counterweight for an elevator so as to be opposed to a lower surface of the counterweight, which is configured to restrict lowering of the counterweight, the buffer cap including: a support column; an upper plate provided to an upper end of the support column; and a lower plate provided to a lower end of the support column, wherein the support column is formed of flat plates, and each of the upper plate and the lower plate is formed of a flat plate, and wherein the flat plates for forming the support column, and the flat plates for the support column and the upper plate or the lower plate are fittable and disassemblable.

A hoistway access system for an elevator includes an access switch positioned at a selected landing floor 34 of an elevator and operably connected to a controller 46. A remote controlled lock 48 is located at landing doors of a landing floor providing access to a hoistway pit 36, and is operably connected to the controller. A safety actuation system is operably connected to an elevator car and operably connected to the controller. The controller is configured to command a drive system to drive the elevator car to an upper location when the access switch is activated, to define a selected safety volume in the hoistway defined by the hoistway pit and the elevator car, command engagement of the safety actuation system to stop and hold the elevator car, and command the lock to unlock when the safety actuation system is engaged, thereby allowing access to the hoistway via the landing doors.

An elevator device including on-car presence detection units, each being configured to detect presence of a person on top of a corresponding one of cars, on-car operation panels, each to be operated for a manual operation of the corresponding one of cars, and an elevator control device including a car operation approval unit configured to approve or cancel the operation on the on-car operation panels. When the on-car presence detection units have detected the presence of persons on top of the plurality of cars, the operation on the on-car operation panels of all the cars is canceled by the car operation approval unit. When the on-car presence detection unit has detected the presence of a person on top of one of the plurality of cars, the car operation approval unit approves the operation on the on-car operation panel of any one of the plurality of cars.