Offshore crane hoisting system with rigid telescopic sleeve

Abstract

The invention discloses an offshore crane hoisting system with a rigid telescopic sleeve. The offshore crane hoisting system comprises a hoisting winding drum, a steel wire rope fixing device and a hook device. The hoisting winding drum and the steel wire rope fixing device are arranged on a small crane frame. The hook device is provided with a pulley. The offshore crane hoisting system is characterized in that the pulley is provided with the telescopic movable sleeve, and the telescopic movable sleeve is arranged between the hoisting winding drum and the steel wire rope fixing device through a rigid fixed sleeve and perpendicularly and fixedly connected with the small crane frame; the bottom of the telescopic movable sleeve is fixedly connected with the pulley, and the telescopic movable sleeve is connected with the rigid fixed sleeve in a sliding mode. Compared with the prior art, the offshore crane hoisting system has a precise localization hoisting function, the problem that a drilling ship marine riser shakes is well solved, and precise localization hoisting is achieved; the offshore crane hoisting system is simple in structure, convenient to maintain, low in cost and specifically suitable for being applied to hoisting equipment for ocean operation.

Description

technical field [0001] The invention relates to the technical field of offshore crane hoisting systems, in particular to a rigid telescopic sleeve offshore crane hoisting system suitable for drilling ships to stably lift and transport risers. Background technique [0002] The riser crane is an important equipment in the entire deepwater offshore oil drilling equipment. This equipment has been monopolized by developed countries such as Europe and the United States. Its lifting system is the key system in the crane. The riser is placed horizontally or vertically in the riser storage area on the drilling ship. It is the main component of the offshore drilling system. The riser crane uses the lifting system to smoothly lift the riser from the riser storage area to the riser cat. on the riser machine, or hoisted from the riser catway machine back to the riser storage area. Since the drilling ship will shake under the influence of waves and wind in the deep sea, it is difficult t...

AI Technical Summary

Problems solved by technology

Since the drilling ship will sway under the influence of waves and wind in the deep sea, it is difficult to ensure that the riser does not sway during the lifting process of the riser.

[0003] Patent No.: ZL201320342165.8 "A Portal Riser Crane for Floating Offshore Drilling", which adopts a rack and pinion lifting system, which has a complex structure and heavy weight. When the lifting height is high, the rack needs The length is particularly long, and the rack will have an adverse effect on the entire crane at this time, and it is not suitable for cranes with high lifting heights

[0004] The problems existing in the prior art are: the steel wire rope hoisting system cannot solve the problem of no swaying of the riser and accurate positioning of the hoisting load, while the rack and pinion hoisting system solves the problem of swaying of the riser and accurate positioning of the hoisting load, but it is used in On a crane with a high lifting height, the structure is complex and the weight is heavy

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