An anti-escape device applied to a fish gathering and transporting system

By linking the screw-type hoist with the segmented grille gate and using a limiting mechanism, the dynamic adjustment problem of the escape prevention device is solved, thereby improving the safety of fish and the efficiency of fish collection, and ensuring the efficient operation of the fish collection and transportation system.

CN224451553UActive Publication Date: 2026-07-03CHINA THREE GORGES CORPORATION
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA THREE GORGES CORPORATION
Filing Date
2025-07-04
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing escape prevention devices cannot dynamically adjust the opening and closing state according to the position of the fish collection box, which makes it easy for fish to escape during the lifting process. In addition, traditional devices have slow response speed and require frequent manual operation, which cannot meet the needs of rapid opening and closing of the fish collection box, affecting the fish survival rate and fish collection efficiency.

Method used

The design incorporates a screw-type hoist and a segmented grille gate, along with upper and lower limit mechanisms and a monitoring system, to achieve precise control and automatic adjustment of the grille gate. The grille gate uses a fine metal mesh structure to accommodate the passage needs of fish of different sizes and is equipped with an emergency operation handle.

Benefits of technology

It enables precise opening and closing of the grille gate, preventing fish from escaping, reducing the frequency of manual operation, improving fish collection efficiency, reducing fish stress response, and ensuring the safe and efficient operation of the fish collection and transportation system.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224451553U_ABST
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Abstract

This utility model discloses an escape prevention device applied to a fish collection system. The device mainly includes a screw-type gate opener, segmented grille gates, and a control system. The screw-type gate opener is installed on the upper part of the fish collection box and connects multiple grille gates via a screw drive. The segmented grille gates consist of independent door panels with metal mesh, connected by pull rods to form a whole. The control system can automatically control the opening and closing of the grille gates according to the position of the fish collection box. This utility model innovatively adopts a segmented grille gate design, combined with an intelligent control system, to effectively prevent fish from escaping during the fish collection process. This utility model improves escape prevention efficiency through automated control and reduces manual intervention; the segmented grille gates can adjust the opening and closing height according to the size of the fish, making them more adaptable; upper and lower limit protection and an emergency operation handle are set to ensure safe and reliable operation. This device has a simple structure, is easy to maintain, and can significantly improve the operating efficiency and safety of the fish collection system.
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