A machine base attachment device for an elevator hoisting machine includes a reinforcing body attached to a forming rail that guides movement of an elevating body, and a machine base fixing member that is fixed to a machine base for supporting a hoisting machine, and attached to the forming rail. The forming rail includes a pair of flange portions and a rail projecting portion fixed between the pair of flange portions. A groove portion that opens between the pair of flange portions is formed in the rail projecting portion. The reinforcing body includes an insertion portion that is inserted into the groove portion. The machine base fixing member is attached to a part of the rail projecting portion in which the insertion portion is inserted.

A machine base attachment device for an elevator hoisting machine includes a reinforcing body attached to a forming rail that guides movement of an elevating body, and a machine base fixing member that is fixed to a machine base for supporting a hoisting machine, and attached to the forming rail. The forming rail includes a pair of flange portions and a rail projecting portion fixed between the pair of flange portions. A groove portion that opens between the pair of flange portions is formed in the rail projecting portion. The reinforcing body includes an insertion portion that is inserted into the groove portion. The machine base fixing member is attached to a part of the rail projecting portion in which the insertion portion is inserted.

The present invention relates to a wire rope suspension device, control method and multi-rope friction lift system, the device comprising: a first beam (6) and a second beam (9) which are passed by a wire rope (1) and fixed to the wire rope (1); a suspension joint (15), for connecting a lifting container (30); a suspension cylinder (14), having two ends respectively connected to the second beam (9) and the suspension joint (15); a wedge joint (8), being disposed in an accommodating chamber provided inside the second beam (9); and a wire rope bias limiting mechanism, being disposed between the wedge joint (8) and the second beam (9), for driving the wedge joint (8) to lock a wire rope section on one side of the wedge joint (8) itself and releasing movement restriction of a wire rope section on the other side of the wedge joint (8), when the second beam (9) has a displacement with respect to the first beam (6) in a predetermined direction. The present invention allows a convenient rope adjustment operation.

The present invention relates to a wire rope suspension device, control method and multi-rope friction lift system, the device comprising: a first beam (6) and a second beam (9) which are passed by a wire rope (1) and fixed to the wire rope (1); a suspension joint (15), for connecting a lifting container (30); a suspension cylinder (14), having two ends respectively connected to the second beam (9) and the suspension joint (15); a wedge joint (8), being disposed in an accommodating chamber provided inside the second beam (9); and a wire rope bias limiting mechanism, being disposed between the wedge joint (8) and the second beam (9), for driving the wedge joint (8) to lock a wire rope section on one side of the wedge joint (8) itself and releasing movement restriction of a wire rope section on the other side of the wedge joint (8), when the second beam (9) has a displacement with respect to the first beam (6) in a predetermined direction. The present invention allows a convenient rope adjustment operation.

The present invention is directed to an elevator system. The elevator system comprises a car, a counterweight, at least one belt connecting the car and counterweight, and at least one sheave having a surface that engages with the belt. At least part of the surface of the sheave that interfaces with the belt has a plurality of features for reducing unwanted noise created due to the interaction between the belt and the sheave surface.

The present invention is directed to an elevator system. The elevator system comprises a car, a counterweight, at least one belt connecting the car and counterweight, and at least one sheave having a surface that engages with the belt. At least part of the surface of the sheave that interfaces with the belt has a plurality of features for reducing unwanted noise created due to the interaction between the belt and the sheave surface.

A traction sheave for an elevator system includes an outer sheave surface having a distance from a sheave axis that varies along a width of the traction sheave. The outer sheave surface includes a first portion having a first coefficient of friction and one or more second portions having a second coefficient of friction less than the first coefficient of friction. An elevator system includes an elevator car, a motor and a traction sheave operably connected to the motor to drive rotation of the traction sheave. The traction sheave includes an outer sheave surface having a distance from a sheave axis that varies along a width of the traction sheave. The outer surface includes a first portion having a first coefficient of friction and one or more second portions having a second coefficient of friction less than the first coefficient of friction.

A traction sheave for an elevator system includes an outer sheave surface having a distance from a sheave axis that varies along a width of the traction sheave. The outer sheave surface includes a first portion having a first coefficient of friction and one or more second portions having a second coefficient of friction less than the first coefficient of friction. An elevator system includes an elevator car, a motor and a traction sheave operably connected to the motor to drive rotation of the traction sheave. The traction sheave includes an outer sheave surface having a distance from a sheave axis that varies along a width of the traction sheave. The outer surface includes a first portion having a first coefficient of friction and one or more second portions having a second coefficient of friction less than the first coefficient of friction.

A drive machine for an elevator includes a motor module including at least a motor, a drive shaft, and a first transmission wheel, which are provided with a common rotational axis and connected coaxially to each other. The drive machine further includes a traction module including at least a traction wheel engageable with elevator hoisting ropes, and a second transmission wheel, which are provided with a common rotational axis and connected coaxially to each other. The motor module and the traction module are positioned side by side with their rotational axes parallel, such that the traction wheel and the drive shaft are side by side, and the first and second transmission wheels are side by side. The drive machine further includes an endless drive member passing around the first and second transmission wheels. An elevator comprising said drive machine is also disclosed.

A drive machine for an elevator includes a motor module including at least a motor, a drive shaft, and a first transmission wheel, which are provided with a common rotational axis and connected coaxially to each other. The drive machine further includes a traction module including at least a traction wheel engageable with elevator hoisting ropes, and a second transmission wheel, which are provided with a common rotational axis and connected coaxially to each other. The motor module and the traction module are positioned side by side with their rotational axes parallel, such that the traction wheel and the drive shaft are side by side, and the first and second transmission wheels are side by side. The drive machine further includes an endless drive member passing around the first and second transmission wheels. An elevator comprising said drive machine is also disclosed.