An improved crab cage

Abstract

The invention provides a crab pot with an improved structure, which belongs to the technical field of fishing for aquatic products. The present invention comprises a connecting pipe, a first circular ring, a second circular ring, a first crab feeding mechanism, a second crab feeding mechanism, an adjustment mechanism and a telescoping mechanism. The left end of the tube, the inner side wall of the first net tube is provided with a first coil spring, the second ring is coaxially arranged on the right end of the connecting pipe through the third net tube, the inner side wall of the third net tube A second helical spring is provided on the top, and a crab-catching chamber is formed between the first net cylinder, the third net cylinder and the connecting pipe, and the first crab-feeding mechanism can make crabs climb into the crab-catching chamber, and the second The crab feeding mechanism can make crabs climb into the crab chamber, the adjusting mechanism can open and close the first crab feeding mechanism and the second crab feeding mechanism at the same time, and the telescopic mechanism can adjust the gap between the first ring and the second ring. the distance. The invention can change the size of the crab cage, and at the same time, can prevent the crabs from escaping.

Description

technical field [0001] The invention belongs to the technical field of tidal current energy generation, and relates to a crab cage with an improved structure. Background technique [0002] The crab cage is used as a tool for catching crabs. Its main body is a frame net cage structure, and holes are provided on the net to induce crabs to enter the cage body. [0003] At present, the commonly used crab cages include fixed crab cages and telescopic crab cages. The size of the fixed crab cages is fixed, and the number of crabs caught is limited, while the telescopic crab cages are easily affected by waves, which will change the size of the crab cages and affect the crabs. into the cage. [0004] In addition, several crab inlet holes are arranged around the crab cage. The crab inlet holes of existing crab cages are either too large or too small. When the crab inlet holes are large, the crabs in the crab cage can easily escape from the crab cage with the waves. , when the crab i...

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used crab cages include fixed crab cages and telescopic crab cages. The size of the fixed crab cages is fixed, and the number of crabs caught is limited, while the telescopic crab cages are easily affected by waves, which will change the size of the crab cages and affect the crabs. into the cage

[0004] In addition, several crab inlet holes are arranged around the crab cage. The crab inlet holes of existing crab cages are either too large or too small. When the crab inlet holes are large, the crabs in the crab cage can easily escape from the crab cage along with the waves. , when the crab inlet hole is small, it is not easy for crabs to enter the crab cage through the crab inlet hole, thereby reducing the number of catches and reducing the fishing efficiency

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