A Throwable Load Type Deep Sea Gravity Columnar Sediment Sampler

Abstract

The invention provides an anchorable load type deep sea gravity columnar sediment sampler. The gravity columnar sediment sampler comprises a sampling tube, wherein a lifting head fixing device is arranged at a top of the sampling tube, a releaser rotary shaft is arranged at an outer edge of a lower boss of the lifting head fixing device, and a releaser is installed on the releaser rotary shaft; a lifting head is installed on an outer side of the lifting head fixing device, the lifting head comprises a horizontal bearing plate and a lifting ring welded on the horizontal bearing plate, an opening and a shallow arc-shaped groove are formed in an edge of the horizontal bearing plate, and a pillar of the releaser can enter the opening; a bearing seat is fixed on a middle upper part of the sampling tube, a load fixing shaft rotary shaft and a load fixing shaft thereof are installed on two sides of the bearing seat; and a lead block load passes through the load fixing shaft to be stacked on the bearing seat, and an upper end of the load fixing shaft extends into a fixing hole of the lifting head. The anchorable load type deep sea gravity columnar sediment sampler provided by the invention is reasonable in structure and convenient to operate, has relatively low requirements for an on-board geological winch, and expands the applicable range of gravity columnar sediment samplers in deep sea, thus being an important supplement to investigation and sampling equipment for seafloor sediments.

Description

technical field [0001] The invention relates to seabed sediment sampling equipment, in particular to a load-throwable deep-sea gravity columnar sediment sampler, which is used for obtaining samples of deep seabed sediment columnar sediments. Background technique [0002] When conducting research on deep-sea marine sedimentary environment, seabed sediment acoustics, marine engineering geology, seabed geological hazard identification and evaluation, etc., only a certain number of undisturbed samples of seabed sediments can be directly obtained for sediment particle size, structure, composition, etc. The analysis and age determination, so as to obtain the corresponding geological information. Therefore, obtaining the undisturbed samples of columnar sediments is an important prerequisite and basis for research in marine geology and other related fields. [0003] There are many methods to obtain seabed columnar sediments, such as gravity columnar sampler and vibrating piston sam...

AI Technical Summary

Problems solved by technology

When using the traditional gravity columnar sediment sampler to sample deep-sea columnar sediments, due to the large depth, the length of the steel cable will increase accordingly, and the weight of the steel cable borne by the geological winch on the ship will increase significantly. Therefore, under the condition of a certain load-bearing capacity of the winch, High-quality sediment samples cannot be obtained simply by increasing the counterweight

When using a ship-borne geological winch with poor load-bearing capacity to sample deep-sea columnar sediments, due to the small load of lead weights that can be attached to traditional gravity columnar samplers, the sampling effect is poor, and even sediment samples cannot be taken. Limits the application of traditional gravity columnar samplers in deep sea geological sampling

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