Barge rocker arm device for launching jacket

Abstract

The invention provides a barge rocker arm device for launching a jacket. The device comprises a rocker arm, wherein the middle part of the rocker arm is hinged to the end of a barge angled deck integrally; a sliding groove I is formed in the surface, which is opposite to the barge angled deck, of the upper part of the rocker arm; a sliding groove II corresponding to the sliding groove I is formed in the barge angled deck; a rolling wheel is placed inside the sliding groove II, abuts against the hinged position of the rocker arm and the barge angled deck and is limited by a detachable limiting device; and a rolling wheel sunk compartment containing the rolling wheel and a winch spool sunk compartment containing a winch spool are manufactured on the barge angled deck, the winch spool sunk compartment is located behind the rolling wheel sunk compartment, and a cable winding around the winch spool winds around the rolling wheel and is fixed at the upper end of the rocker arm. The device substitutes for past balance weight methods or cable car traction methods, so that after the jacket is launched from the rocker arm of a barge, the rocker arm can return to the original position at the constant speed automatically, no safety problem exists, and the efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of marine engineering machinery, and in particular relates to a barge rocker device used for launching a jacket. Background technique [0002] The jacket of the steel jacket type offshore platform has a huge shape and weight. It needs to be dragged to the installation site by a large barge, and then the jacket is supported by the rocker at the rear of the barge. The lower free fall slides into the water to complete the process of launching. In order to make the jacket go into the water smoothly, the rocker arm should match the shape and weight of the jacket. Its overall dimensions (length×width×height): ~30m×~4m×~5m, and the weight of a single rocker arm is about 350 Ton. When such a large rocker device returns to its original position after being fully tilted, safety issues need to be paid attention to. If it is restored by its free fall, it will cause a great impact; so the general method is to use the c...

AI Technical Summary

Problems solved by technology

When such a large rocker device returns to its original position after being fully tilted, safety issues need to be paid attention to. If it is restored by its free fall, it will cause a great impact; so the general method is to use the counterweight of the rocker arm, that is, the rocker arm Set it as a ballast tank, and then adjust the ballast water for counterweight. This method increases the piping system and equipment, and the ballast water adjustment speed is slow and the accuracy is low; or use the winch to slowly return it to the original position in the opposite direction. However, the disadvantages of these two methods are: to add extra weight or equipment, it is necessary to allocate relevant personnel to operate, the efficiency is not high, and there are potential safety hazards, so it is necessary to improve

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