Triggering expansion type heavy hammer device

Abstract

The invention discloses a triggering expansion type heavy hammer device and aims at providing the triggering expansion type heavy hammer device which can be used for effectively solving the problems that slurry is stirred up when a heavy hammer is in contact with the bottom so that the quality of a collected water sample is influenced. The triggering expansion type heavy hammer device comprises a main supporting rod, a triggering expansion type buffering umbrella arranged on the main supporting rod, a triggering device and a main counter weight; the main counter weight is located under the triggering expansion type buffering umbrella; the main supporting rod is internally provided with a longitudinal shaft hole penetrating through the two end faces of the main supporting rod; the triggering expansion type buffering umbrella comprises a slide sleeve which sleeves the main supporting rod in a slidable manner, a plurality of main umbrella ribs which are uniformly distributed around the main supporting rod in the peripheral direction, a plurality of secondary umbrella ribs corresponding to the main umbrella ribs one by one and an umbrella surface arranged on the main umbrella ribs; the upper ends of the main umbrella ribs are hinged to the upper part of the main supporting rod; one end of each secondary umbrella rib is hinged to the slide sleeve and the other ends of the secondary umbrella ribs are hinged to the middle parts of the corresponding main umbrella ribs; and an outer limiting stopping block is arranged on the outer side face of the main supporting rod and is located above the slide sleeve.

Description

technical field [0001] The invention relates to a heavy hammer device applied to a water sample sampling device, in particular to a trigger expansion type heavy hammer device applied to a water sample sampling device. Background technique [0002] In a large number of scientific research and marine environmental monitoring work, it is usually necessary to collect a certain amount (depending on project requirements) of bottom seawater for bottom water quality (including pH value, dissolved oxygen, phosphate, inorganic nitrogen, heavy metals, etc.) or Analysis of plankton (including zooplankton and phytoplankton), etc. Bottom seawater generally refers to seawater at a depth of 2 meters (or 0.5 meters from the seabed) (GB17378.3-2007 "Marine Monitoring Specification Part 3: Sample Collection, Storage and Transportation" stipulates that the maximum It is best to take the water layer 2 meters away from the seabed, and the distance from the bottom layer can be increased as approp...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a triggering extended weight device that can effectively solve the problem that the mud water will be stirred up when the weight touches the bottom, which will affect the quality of the collected water samples

The triggering extended weight device of this method can effectively solve the problem that the muddy water will be stirred up when the weight hits the bottom, which will affect the quality of the collected water samples.

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