CROSS-REFERENCE TO RELATED APPLICATIONS

The present application claims benefit of Chinese Patent Application No. 202010239670.4, filed on Mar. 30, 2020, and Chinese Patent Application No. 202020434779.9, filed on Mar. 30, 2020. The contents of Chinese Patent Application No. 202010239670.4 and Chinese Patent Application No. 202020434779.9 are hereby incorporated by reference in their entireties.

BACKGROUND

There are two types of existing hoisting systems. One is winding type, and the other is friction type. For the winding type, in an ultra-deep well with a depth of more than 1200 m, as the well depth increases, the proportion of the weight of the hoisting rope in the hoisted load increases rapidly, the hoisted payload becomes smaller and smaller, and the energy efficiency ratio of the hoisting system becomes lower and lower. For the friction type, a tail rope has to be used. When the depth is greater, the tail rope is longer, and the weight of the tail rope itself is heavier. When the depth of the mine well is greater than 1000 m, the proportion of the weight of the hoisting rope itself in the hoisted load increases sharply, almost all of the torque output by the drum is used to carry the weight of the tail rope, and the hoisted payload decreases sharply, that is, the energy efficiency ratio is very low. Therefore, the existing hoisting systems cannot solve the problem of low energy efficiency ratio in the hoisting system for ultra-deep well.

SUMMARY

The disclosure relates to the field of mine well equipment, and in particular to a double-drum linkage winding type hoisting system.

In view of this, an objective of the embodiment of the disclosure is to provide a double-drum linkage winding type hoisting system, which can improve the energy efficiency ratio in the hoisting system for ultra-deep well.

In order to achieve the above objective, the technical solutions of the embodiments of the disclosure are implemented as follows:

A double-drum linkage winding type hoisting system includes a first hoisting drum and a second hoisting drum; the first hoisting drum and the second hoisting drum are engaged and linked through engagement structures on outer circumferences of the first hoisting drum and the second hoisting drum or are linked through a linkage intermediate member; a first hoisting rope is wound around the first hoisting drum, a second hoisting rope is wound around the second hoisting drum, and the first hoisting rope and the second hoisting rope are not connected with each other.

In the above solution, two axial ends of the first hoisting drum and two corresponding axial ends of the second hoisting drum are aligned and linked through the linkage intermediate member; the linkage intermediate member is movably mounted at a linkage position between the first hoisting drum and the second hoisting drum; and when the linkage intermediate member moves out of the linkage position, the first hoisting drum and the second hoisting drum are out of linkage.

In the above solution, the linkage intermediate member includes a gear set which consists of one or amore cylindrical gears; the first hoisting drum is provided with teeth engaged with the cylindrical gears of the gear set on the circumference of at least one of the two axial ends of the first hoisting drum, and the second hoisting drum is provided with teeth engaged with the cylindrical gears of the gear set on the circumference of at least one of the two axial ends of the second hoisting drum.

In the above solution, the gear set at least includes two mutually engaged cylindrical gears at corresponding ends of the first hoisting drum and the second hoisting drum, opposite first sides of the two cylindrical gears are engaged with each other, and second sides of the two cylindrical gears are engaged with the first hoisting drum and the second hoisting drum, respectively.

In the above solution, the first hoisting drum is provided with teeth engaged with the cylindrical gears of the gear set on the circumferences of the two ends of the first hoisting drum, and the second hoisting drum is provided with teeth engaged with the cylindrical gears of the gear set on the circumferences of the two ends of the second hoisting drum; the gear set includes two mutually engaged cylindrical gears at the two ends of each of the first hoisting drum and the second hoisting drum, the opposite first sides of the two cylindrical gears at the same end are engaged with each other, and the second sides of the two cylindrical gears at the same end are engaged with the first hoisting drum and the second hoisting drum, respectively.

In the above solution, each of the first hoisting drum and the second hoisting drum includes an outer rotor permanent magnet motor, and a housing of a rotor of the outer rotor permanent magnet motor is a drum part of the first hoisting drum or the second hoisting drum.

In the above solution, the system further includes a power supply device capable of controlling the outer rotor permanent magnet motor of the first hoisting drum and the outer rotor permanent magnet motor of the second hoisting drum, respectively, and the power supply device is electrically connected with the outer rotor permanent magnet motor of the first hoisting drum and the outer rotor permanent magnet motor of the second hoisting drum, respectively.

In the above solution, the system further includes a control device for controlling an operation of the system and a position monitoring device for monitoring a position of a hoisting container; the control device is mounted in a ground machine room and the position monitoring device is mounted on a derrick; and the control device is electrically connected with the power supply device and the position monitoring device.

In the above solution, the system further includes an over-winding protection device, and the over-winding protection device is mounted on the derrick and electrically connected with the control device.

In the above solution, the system further includes a braking device and the braking device is mounted on one side of at least one of the first hoisting drum or the second hoisting drum.

The double-drum linkage winding type hoisting system provided by the embodiment of the disclosure includes a first hoisting drum and a second hoisting drum; the first hoisting drum and the second hoisting drum are engaged and linked through engagement structures on outer circumferences of the first hoisting drum and the second hoisting drum or are linked through a linkage intermediate member; a first hoisting rope is wound around the first hoisting drum, a second hoisting rope is wound around the second hoisting drum, and the first hoisting rope and the second hoisting rope are not connected with each other. It can be seen that, in the double-drum linkage winding type hoisting system provided by the embodiment of the disclosure, the two hoisting drums are linked. Since the force directions of the two hoisting drums are opposite, all weight of the two hoisting containers and most weight of the hoisting ropes can be offset, thus improving the energy efficiency ratio in the hoisting system for ultra-deep well.

Other beneficial effects of the embodiments of the disclosure will be further described in specific implementations in combination with specific technical solutions.

