A device and method for collecting seabed surface samples

Abstract

The invention discloses a device and a method for collecting seabed surface layer samples. The device comprises a grab bucket, a steel rope, a chain, a hook and a balance mechanism, wherein the grab bucket comprises a rotating shaft, and a first combined bucket and a second combined bucket which are pivoted to the rotating shaft; the middle of the rotating shaft is connected with a sleeve; the hook comprises a fixed piece and a swing piece; the middle of the swing piece is pivoted with the fixed piece; a counter weight is arranged at one end of the swing piece, and a hook part is arranged at the other end of the swing piece; two ends of the chain are connected with the top of the first combined bucket and the top of the second combined bucket, respectively; a perforation is formed in the first combined bucket; the steel rope penetrates through the sleeve and winds the rotating shaft in a sliding mode; one end of the steel rope is connected with the fixed piece, and the other end of the steel rope passes through the perforation and then is connected with the second combined bucket; the balance mechanism comprises a frame and four heavy blocks; an insertion tube is arranged at the central position of the frame; the distances from the heavy blocks to the insertion tube are the same; the sleeve is connected with the insertion tube in an insertion manner. The device for collecting seabed surface layer samples has the advantage of being capable of stably going up and down in water.

Description

technical field [0001] The invention relates to a device and method for collecting seabed surface samples. Background technique [0002] When conducting ecological or sediment investigations on water bodies, it is often necessary to collect mud products deposited at the bottom of the water body. In this process, people usually use traditional mud samples for mud sample collection. If the collection of mud samples fails, the collected mud samples contain too few samples or the quality of the samples is not high enough to meet the index requirements and sampling purposes, it is necessary to re-collect, so the number and success rate of mud samples collected by traditional mud samples Determines the quality and progress of related investigations and studies. [0003] The conventional dredger currently in use usually includes a combination bucket that can be opened and closed, such as the utility model patent of CN201653751U whose title is a head-grabbing dredger. This kind of...

AI Technical Summary

Problems solved by technology

This kind of mud extractor has poor impact resistance, and it is easy to tilt under the impact of water flow, resulting in mud extraction failure. It can only be used in calm waters, and the application occasions are limited; The dredger is completely unsuitable, often resulting in empty mining; in addition, this traditional dredger cannot realize the adjustment of the collection capacity, and has a single function

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