The invention relates to a traction wheel for an elevator for driving plurality of belts, comprising a central axis; plurality of circular rim surfaces side by side in axial direction against each of which a belt can be placed to pass; and circular guide flanges on axial sides of each rim surface for guiding a belt placed to pass against the rim surface. Each of said guide flanges comprises a circular array of guide parts, plurality of which guide parts comprises a guide surface portion for guiding a belt, which guide surface portion is movable towards the central axis. The invention also relates to a drive machinery and an elevator implementing the traction wheel.

A skip hoist of a blast furnace includes a winch system. In order to provide an improved drive system for a skip hoist of a blast furnace, the winch system includes a winch drum, rotatably mounted about a drum axis; at least three drive motors; and a transmission for transferring a drive force from each of the drive motors to the winch drum.

The skip hoist further relates to a blast furnace.

The invention relates to an a drive machinery for an elevator, the drive machinery comprising a rotatable drive sheave for driving plurality of ropes of the elevator, the drive sheave comprising a central cylinder, which comprises a central axis around which the central cylinder is rotatable; plurality of circular rim members surrounding the central cylinder, each said rim member comprising an outer rim surface for engaging a rope. Said plurality of circular rim members includes one or more rotatably mounted circular rim members, each said rotatably mounted circular rim member being mounted on the central cylinder rotatably around said central axis relative to the central cylinder and relative to one or more of the other circular rim members, and in that said drive sheave moreover comprises a control means for controlling rotation of each said rotatably mounted circular rim member relative to the central cylinder and relative to one or more of the other circular rim members. The invention also relates to an elevator implementing the drive machinery.

The invention relates to an a drive machinery for an elevator, the drive machinery comprising a rotatable drive sheave for driving plurality of ropes of the elevator, the drive sheave comprising a central cylinder, which comprises a central axis around which the central cylinder is rotatable; plurality of circular rim members surrounding the central cylinder, each said rim member comprising an outer rim surface for engaging a rope. Said plurality of circular rim members includes one or more rotatably mounted circular rim members, each said rotatably mounted circular rim member being mounted on the central cylinder rotatably around said central axis relative to the central cylinder and relative to one or more of the other circular rim members, and in that said drive sheave moreover comprises a control means for controlling rotation of each said rotatably mounted circular rim member relative to the central cylinder and relative to one or more of the other circular rim members. The invention also relates to an elevator implementing the drive machinery.

A hoisting apparatus for a mine vertical shaft, a hoisting system for a mine vertical shaft and a controlling method thereof are provided. The hoisting apparatus includes a driving device provided at a wellhead and a guiding device provided in a vertical shaft. A position of the guiding device corresponds to a position of the driving device and a transmission rope is wound around the driving device and the guiding device. Moreover, the driving device is drivingly connected to the guiding device via the transmission rope; and a tension regulating device is provided in the vertical shaft. The guiding device is movably provided at the tension regulating device that is for regulating a distance between the driving device and the guiding device. The tension regulating device controls a tension of the transmission rope by regulating the distance between the driving device and the guiding device.

A hoisting apparatus for a mine vertical shaft, a hoisting system for a mine vertical shaft and a controlling method thereof are provided. The hoisting apparatus includes a driving device provided at a wellhead and a guiding device provided in a vertical shaft. A position of the guiding device corresponds to a position of the driving device and a transmission rope is wound around the driving device and the guiding device. Moreover, the driving device is drivingly connected to the guiding device via the transmission rope; and a tension regulating device is provided in the vertical shaft. The guiding device is movably provided at the tension regulating device that is for regulating a distance between the driving device and the guiding device. The tension regulating device controls a tension of the transmission rope by regulating the distance between the driving device and the guiding device.

A hoisting apparatus for a mine vertical shaft, a hoisting system for a mine vertical shaft and a controlling method thereof are provided. The hoisting apparatus includes a driving device provided at a wellhead and a guiding device provided in a vertical shaft. A position of the guiding device corresponds to a position of the driving device and a transmission rope is wound around the driving device and the guiding device. Moreover, the driving device is drivingly connected to the guiding device via the transmission rope; and a tension regulating device is provided in the vertical shaft. The guiding device is movably provided at the tension regulating device that is for regulating a distance between the driving device and the guiding device. The tension regulating device controls a tension of the transmission rope by regulating the distance between the driving device and the guiding device.

A hoisting apparatus for a mine vertical shaft, a hoisting system for a mine vertical shaft and a controlling method thereof are provided. The hoisting apparatus includes a driving device provided at a wellhead and a guiding device provided in a vertical shaft. A position of the guiding device corresponds to a position of the driving device and a transmission rope is wound around the driving device and the guiding device. Moreover, the driving device is drivingly connected to the guiding device via the transmission rope; and a tension regulating device is provided in the vertical shaft. The guiding device is movably provided at the tension regulating device that is for regulating a distance between the driving device and the guiding device. The tension regulating device controls a tension of the transmission rope by regulating the distance between the driving device and the guiding device.

The invention relates to a traction wheel for an elevator for driving plurality of belts, comprising a central axis; plurality of circular rim surfaces side by side in axial direction against each of which a belt can be placed to pass; and circular guide flanges on axial sides of each rim surface for guiding a belt placed to pass against the rim surface. Each of said guide flanges comprises a circular array of guide parts, plurality of which guide parts comprises a guide surface portion for guiding a belt, which guide surface portion is movable towards the central axis. The invention also relates to a drive machinery and an elevator implementing the traction wheel.

A tension balance system for steel wire ropes on a friction hoisting driving end of an ultra-deep well includes a friction wheel, left and right guiding wheels, left and right steel wire ropes, left and right adjustment wheels, left and right rewinding wheels, left and right adjustment oil cylinders, a hydraulic pipeline, a pump station, a pipeline switch group, left and right hoisting containers, balance ropes, and reels. The friction wheel is disposed in the middle, the left and right adjustment wheels and the left and right rewinding wheels are circularly distributed around the friction wheel, the left and right guiding wheels, the left and right adjustment wheels, and left and right rewinding wheels are all symmetrically disposed on two sides of the friction wheel; both a quantity of left steel wire ropes and a quantity of right steel wire ropes are even numbers more than 2.