Abstract: Disclosed is a nursing bed-chair assembly, which includes a nursing bed and a wheelchair. The nursing bed includes a bed frame, and a connecting mechanism and an interfacing mechanism which are mounted on the bed frame. The butt-joint mechanism includes a guide rail, a butt-joint fixing plate and butt-joint members. The guide rail is mounted on the bed frame, the butt-joint fixing plate is slidably mounted on the guide rail, and the butt-joint members are mounted on the butt-joint fixing plate. The wheelchair includes a wheelchair frame, a backrest and a seat plate which are mounted on the wheelchair frame, main wheels rotatablely mounted on both sides of the wheelchair frame, armrests, and butt-joint portions in butt joint with the butt-joint members.

Abstract: An energy-saving traction-type elevator and an energy-saving method therefor are presented. The traction-type elevator includes at least one counterbalance unit, each counterbalance unit comprising a traction machine. The traction-type elevator further includes an automatic transmission, a hoist-type lifting mechanism, a power-generating electric motor, and a controller provided in a machine room, and a car, a fixed counterweight and a balancing counterbalance provided in an elevator shaft. The energy-saving method applies the principle of moment balance, whereby adding a separate elevator balancing counterbalance to achieve intelligent counterbalancing of the elevator so that the elevator achieves relative balance, thereby reducing the traction moment and rate of work of the traction machine. When the potential energy of the elevator balancing counter-balance builds up to a high position, the power-generating electric motor can perform centralized power generation, aiding in energy recovery and use.

Abstract: An energy-saving traction-type elevator and an energy-saving method therefor are presented. The traction-type elevator comprises at least one counterbalance unit, each counterbalance unit comprising a traction machine, an automatic transmission, a hoist-type lifting mechanism, a power-generating electric motor, and a controller provided in a machine room, and a car, a fixed counterweight and a balancing counterbalance provided in an elevator shaft. The energy-saving method applies the principle of moment balance, whereby adding a separate elevator balancing counterbalance to achieve intelligent counterbalancing of the elevator means so that the elevator achieves relative balance, thereby reducing the traction moment and rate of work of the traction machine. When the potential energy of the elevator balancing counter-balance builds up to a high position, the power-generating electric motor can perform centralized power generation, aiding in energy recovery and use.