Mechanization net changing method for large-scale aquiculture net cage

Abstract

The invention provides a method for mechanized replacing nets of large-sized net tanks for aquiculture. The method is characterized in that: a movable operating platform on the sea docks on a side of a large-sized net tank to be net replaced; the operating platform is provided with net hauling equipment which provides power for collecting netting by a rope tendon; a moving platform raft of the opening rope is put into the large-sized net tank to be net replaced; a part of the opening ropes of the net mouth of the old netting which is opposite to the operating platform is tied onto the moving platform raft of the opening rope; the other part of the connections between the old netting and a frame of the net tank are unfastened; the netting is gradually collected till two ends of the moving platform raft contact with the frame of the net tank; a new netting is thrown onto the water surface in the frame of the net tank and is basically spread; a part of the net mouth of the new netting which is close to the moving platform raft is pressed into the water and sheathed over the old netting that is not collected yet; then the new netting is fastened to the frame of the net tank; at the same time, the fish in the old netting is driven into the new netting. The method for mechanized replacing nets of the invention completes mechanized net replacing without fishing the fish in the net tanks, thus having low cost and high work efficiency.

Description

Technical field [0001] The invention relates to a mechanized net changing method for large aquaculture net cages. Background technique [0002] At present, large-scale deep-water anti-wind and wave cage aquaculture is developing rapidly. However, due to the large-scale cages and the attachment of fouling organisms, manual net changing operations are difficult and labor-intensive, and even the consequences of not being able to manually change nets are severely restricted. The healthy development of wind wave cage aquaculture. At present, the ship crane method is used to change the net in foreign countries. This method must first complete the fishing operation of the fish in the cage, and the investment is large and the operation cost is increased. Summary of the invention [0003] The purpose of the present invention is to provide a mechanized net changing method for large-scale aquaculture cages, which adopts a movable operating platform, is powered by a vertical stranding machin...

AI Technical Summary

Problems solved by technology

[0002] At present, large-scale deep-water anti-wind and wave cage culture is developing rapidly, but due to the influence of large-scale cages and fouling organisms, manual net replacement is difficult and labor-intensive, and even results in the inability to manually change nets, which seriously restricts large-scale anti-wave cages. Healthy Development of Cage Culture in Wind and Waves

In foreign countries, the boat crane method is often used to change the net. This method must first complete the fishing operation of the fish in the cage, and the investment is large, which increases the operating cost.

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