A flexible elevator machine frame is provided. The flexible elevator machine frame includes a first end supportive of a motor, a second end supportive of a brake, a central portion and an adapter assembly. The central portion is interposable between the first and second ends and is configured to accommodate a base traction assembly between the motor and the brake. The central portion includes first and second end sides which are associated with the first and second ends, respectively, and which are configured to be fastened together. The adapter assembly is configured to be fastened between the first and second end sides to accommodate the base and an additional traction assembly between the motor and the brake.

The present invention provides a wind turbine comprising a tower, a nacelle, and a descent module configured to accommodate at least one person while descending down at least a portion of a height of the tower, wherein the descent module is arranged to be magnetically attracted to the tower to guide the descent module relative to the tower over at least a portion of the descent. The present invention also provides a descent module for a wind turbine, and a method of lowering at least one person down at least a portion of a height of a tower of a wind turbine.

An elevator system includes a hoistway and an elevator car positioned in and movable along the hoistway. The elevator car includes a first sheave and a second sheave spaced apart from the first sheave. The first sheave and second sheave have parallel axes of rotation and each include a traction surface and a gearless prime mover operably connected to the traction surface to drive rotation of the traction surface. A first load bearing member is positioned in the hoistway and a second load bearing member is positioned in the hoistway. The first load bearing member passes laterally under the first sheave, vertically upward between the first sheave and the second sheave, and laterally over the second sheave. The second load bearing member passes laterally under the second sheave, vertically between the second sheave and the first sheave, and laterally over the first sheave.

The present invention provides a tractor assembly and an elevator. The tractor assembly includes: a rack; multiple tractors; and multiple traction parts connected to an elevator car and an elevator counterweight respectively via the tractors; wherein the multiple tractors are mounted on the rack respectively, and are staggered along a horizontal direction; the vertical direction extends along an elevator hoistway, and the horizontal direction transects the elevator hoistway to extend. With such arrangement, on the one hand, arrangement of two tractors is implemented without making too many changes to an existing structure space; on the other hand, compared with a unit that uses a heavy load tractor, the product cost can be reduced significantly while achieving basically the same technical effect. In addition, the use of two tractors of a relatively small size also implements machine room-free or small machine room arrangement.

A flexible elevator machine frame is provided. The flexible elevator machine frame includes a first end supportive of a motor, a second end supportive of a brake, a central portion and an adapter assembly. The central portion is interposable between the first and second ends and is configured to accommodate a base traction assembly between the motor and the brake. The central portion includes first and second end sides which are associated with the first and second ends, respectively, and which are configured to be fastened together. The adapter assembly is configured to be fastened between the first and second end sides to accommodate the base and an additional traction assembly between the motor and the brake.

The present invention provides a rope climbing elevator system, and pertains to the technical field of elevator. The elevator system of the present invention can achieve a ratio of a linear rotation speed of a drive motor to a movement speed of an elevator car, larger than or equal to about 2:1, can lower the torque requirement for the drive motor, decrease the weight of the drive motor, and reduce the cost of the drive motor.

An apparatus (10) for connecting a drive assembly (4) to a bedplate (2) of an elevator system. The apparatus (10) includes a first support (14) for mounting a motor (6) of the drive assembly (4) to the bedplate (2). The apparatus (10) further includes a second support (16) for mounting a brake unit (8) of the drive assembly (4) to the bedplate (2). The first support (14) and the second support (16) are separate parts.

An elevator system includes a hoistway and an elevator car suspended in the hoistway via one or more suspension members. A counterweight is suspended in the hoistway via the one or more suspension members to balance operation of the elevator car. A machine is positioned at the hoistway to drive the one or more suspension members along the hoistway, driving motion of the elevator car and/or counterweight along the hoistway. A suspension member termination is supported at the machine, to secure an end of the one or more suspension members. A drive system for an elevator includes one or more elevator suspension members and a machine interactive with the one or more elevator suspension members to drive motion of an elevator car. A suspension member termination is supported at the machine to secure an end of the one or more suspension members at the machine.

One elevator system includes an elevator car, counterweight, traction sheave, support wrapped around the traction sheave and suspending the car and the counterweight, a compensation sheave, a compensation member wrapped around the compensation sheave and being affixed at a first end to the elevator car and at a second end to the counterweight, and a tensioner. The support is driven by rotation of the traction sheave to raise and lower the car, and the tensioner is in communication with the traction sheave for linearly displacing a rotational centerpoint of the traction sheave. Another elevator system has an elevator car, counterweight, compensation sheave, compensation rope wrapped around the compensation sheave and being affixed to the car and the counterweight, a traction sheave driving a support suspending the car and the counterweight, and a tensioner in communication with the traction sheave for inducing a variation in tension of the compensation rope.

The present invention relates to an effective gravity control device which is installed to have a falling space to be a vertical space in a building, and which implements a zero gravity, microgravity, low gravity, or pseudogravity state of an internal module mounted in a moving external module. An example effective gravity control device includes: a dual module including an external module and an internal module; an actuator installed at the upper side of a falling space in a space for controlling and monitoring a change in gravity applied to the dual module, and which moves the external module so that, according to a control signal, the external module has at least one physical quantity; and a sliding frame which is installed in a space at the lower side of the falling space and provides a path for taking the dual module into/out from the falling space.