Geometrical structure of trolling nylon braided line and method for measuring mechanical property thereof

Abstract

The invention provides a geometrical structure of a trolling nylon braided line and a method for measuring the mechanical property thereof, and relates to the measurement of the trolling nylon braided line. The method comprises sampling, conditioning balance, geometrical structure and mechanical property test, and is characterized in that: the samples are selected from more than 6 cm away from the tail end of the line; the dry-state sample undergoes the conditioning balance for 5h at a temperature of between 16 and 20 DEG C and a humidity of between 57 and 63 percent, and the wet-state sample is soaked for 5h at a water temperature of between 16 and 20 DEG C; the nylon braided line sample is arranged on upper and lower pneumatic ring clamps of a strength tester, and stretched until broken under conditions of the test distance of 1.20 m and the stretching speed of 120 mm / min; the nylon single filament is arranged on upper and lower pneumatic flat-opening clamps, and stretched until broken under conditions of the test distance of 270 mm and the average broken time of 16 to 20s; and in the test, the effective measurement time is 30, and the average value, coefficient of mean deviation and coefficient of variation are worked out. The geometrical structure and the method are used for measuring the mechanical property of the geometrical structure of the trolling nylon braided line.

Description

technical field [0001] The invention relates to a method for measuring the geometric structure and mechanical properties of a nylon braided line for trolling fishing for agricultural and aquatic products. Background technique [0002] Trolling fishing is an effective fishing gear that uses a boat to tow fishing gear to catch tuna and mackerel, which are larger in size and faster in swimming. The structure of trolling fishing gear is generally composed of hooks, fishing lines, sinkers and sinking facilities (diving boards, sinking iron drums, etc.). The fishing line is generally composed of upper, middle and lower sections. The upper and lower sections are nylon monofilaments with a diameter of 1.6mm to 2.5mm, and the middle section is a nylon braided wire with a diameter of 3.0mm to 3.9mm. Nylon braided wire is the connecting wire between the upper and lower segments. In trolling fishing, not only is the nylon braided wire not easily detected by fish in water, but the color...

AI Technical Summary

Problems solved by technology

Because the use environment of trolling nylon braided line is different from that on land, and it is related to the safety of fishing tackle and fishing efficiency, once the fishing line breaks, it will cause tuna, mackerel and other fish to escape and the fishing tackle will be lost, and the loss will be huge And the consequences are very serious. For example, the escaped tuna may die slowly in the ocean due to deep swallowing of the hook, and may affect its growth and development due to shallow swallowing of the hook, while the lost fishing tackle may be lost in the ocean for a long time. Catch fish, form "ghost fishing"

This not only brings hidden dangers to trolling fishery production, but also wastes valuable fishery resources and restricts the sustainable and healthy development of trolling fishery. However, there is no industry standard for trolling nylon braided line in the field of fishing technology in my country

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