Provided is an elevator device, in which a hoisting machine includes a main shaft, a brake drum rotatable about an axis of the main shaft, and a brake unit arranged at a position on a radially outer side of the brake drum. The brake unit includes a movable member and presses the movable member in an obliquely upward direction against an outer peripheral surface of the brake drum to apply a braking force to the brake drum. The car guide rail is retained by an upper rail bracket at a position higher than a position of the machine base. The brake unit is arranged at a position higher than the machine base and lower than the upper rail bracket.

The present disclosure discloses a double-speed electric winch and an operating method of the winch. The winch comprises two groups of planetary gears with different transmission ratios in a gearbox. The two groups of planetary gears have corresponding outer ring gears. The gearbox has a rotatable handle which has a locking head inserted in the gearbox. As the handle rotates, the locking head engages with the outer ring gears in different manners to provide a first rotating speed mode, a second rotating speed mode, and a disengaged mode.

The present disclosure discloses a double-speed electric winch and an operating method of the winch. The winch comprises two groups of planetary gears with different transmission ratios in a gearbox. The two groups of planetary gears have corresponding outer ring gears. The gearbox has a rotatable handle which has a locking head inserted in the gearbox. As the handle rotates, the locking head engages with the outer ring gears in different manners to provide a first rotating speed mode, a second rotating speed mode, and a disengaged mode.

According to one embodiment, a rotating electrical machine includes an annular winding, a stator core, and a rotor core. At least one of the stator core and the rotor core includes a first member and a second member. The first member and the second member are formed in annular shape. The first member and the second member overlap each other in an axial direction of the shaft. The first member includes a slit-shaped first insulation section. The first insulation section extends in the axial direction. The second member includes a slit-shaped second insulation section. The second insulation section extends in the axial direction. The first member and the second member are integrally connected. The first insulation section and the second insulation section are disposed at different positions in the rotation direction.

According to one embodiment, a rotating electrical machine includes an annular winding, a stator core, and a rotor core. At least one of the stator core and the rotor core includes a first member and a second member. The first member and the second member are formed in annular shape. The first member and the second member overlap each other in an axial direction of the shaft. The first member includes a slit-shaped first insulation section. The first insulation section extends in the axial direction. The second member includes a slit-shaped second insulation section. The second insulation section extends in the axial direction. The first member and the second member are integrally connected. The first insulation section and the second insulation section are disposed at different positions in the rotation direction.

There is provided a vibration suppression device for a rope-like body of an elevator that can inhibit displacement of the rope-like body from becoming unstable due to amplification of the displacement and can make a movable range of the rope-like body wider. A vibration suppression device (20) includes a movable unit and a stopper. The movable unit can move in a direction in which a distance from an equilibrium position (19) of the rope-like body changes. The stopper restricts movement of the movable unit to a position closer than a first distance (d1) from the equilibrium position (19). The movable unit includes a displacement amplifier and a restriction member. The displacement amplifier is arranged to be directed to a first position (P1) of the rope-like body. The displacement amplifier amplifies displacement of the rope-like body. The restriction member inhibits the rope-like body from approaching the displacement amplifier.

There is provided a vibration suppression device for a rope-like body of an elevator that can inhibit displacement of the rope-like body from becoming unstable due to amplification of the displacement and can make a movable range of the rope-like body wider. A vibration suppression device (20) includes a movable unit and a stopper. The movable unit can move in a direction in which a distance from an equilibrium position (19) of the rope-like body changes. The stopper restricts movement of the movable unit to a position closer than a first distance (d1) from the equilibrium position (19). The movable unit includes a displacement amplifier and a restriction member. The displacement amplifier is arranged to be directed to a first position (P1) of the rope-like body. The displacement amplifier amplifies displacement of the rope-like body. The restriction member inhibits the rope-like body from approaching the displacement amplifier.

A middle-drive type elevator has a lift car, tractor, wire rope, guide pulley and counterweight device. The tractor is installed between the lift car and guide pulley. Both the tractor and guide pulley are disposed above the lift car. The tractor is located below the guide pulley. One end of the wire rope connects to the top of the counterweight device, and the other end connects to the top of the lift car after passing through the guide pulley and a traction wheel on the tractor successively. To make the tractor arranged in the middle, the guide pulley bears the majority of the weight of the lift car and counterweight device, while the tractor only bears the minority of the weight of the lift car and counterweight device. It can effectively reduce the load borne by the tractor and greatly improve the service life of the tractor.

A middle-drive type elevator has a lift car, tractor, wire rope, guide pulley and counterweight device. The tractor is installed between the lift car and guide pulley. Both the tractor and guide pulley are disposed above the lift car. The tractor is located below the guide pulley. One end of the wire rope connects to the top of the counterweight device, and the other end connects to the top of the lift car after passing through the guide pulley and a traction wheel on the tractor successively. To make the tractor arranged in the middle, the guide pulley bears the majority of the weight of the lift car and counterweight device, while the tractor only bears the minority of the weight of the lift car and counterweight device. It can effectively reduce the load borne by the tractor and greatly improve the service life of the tractor.

An elevator system and/or method executed by an elevator controller for detecting a fault within the elevator system. The elevator controller utilizes the fault to disable a drive control portion of the elevator controller and activate a drive u-stop control portion of the elevator controller. The drive u-stop control portion of the elevator controller generates a signal based on at least one of a speed estimation, a velocity profile, and feedforward information. The elevator controller applies the signal to an inverter connected to the elevator controller to execute the urgent stop of an elevator car of the elevator system.