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Grab-type sediment sampler

A sampler and sediment technology, applied in the field of measurement, can solve problems such as affecting work efficiency, inaccurate survey data, affecting sampling accuracy, etc., to achieve the effect of easy operation

Inactive Publication Date: 2013-03-13
TIANJIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sampling failure due to poor grab level will not only affect work efficiency, multiple in-situ sampling will also increase the disturbance to the sediment in the sampling area, resulting in increased sampling distortion, which will directly affect the accuracy of sampling in severe cases, leading to investigation the data is inaccurate

Method used

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Examples

Experimental program
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Embodiment Construction

[0018] The present invention will be further described in detail through specific embodiments below in conjunction with the accompanying drawings. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0019] A grab-type sediment sampler, comprising a left grab 5, a right grab 9, a left rib 7, a right rib 8, a grab support beam 1 and a suspension ring 2, and the left and right grabs are arranged symmetrically as mirror images, There are left ribs on both sides of the left grab at the joint of the left and right grabs, respectively, and right ribs on both sides of the right grab at the joint of the left and right grabs. The upper end is jointly hinged with the grab support beam, and a lifting ring is fixed in the middle of the upper end surface of the grab support beam.

[0020] The innovation point of the present invention is:

[0021] A left counterweight cover 4 and a right counterweight cover 10 ar...

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Abstract

The invention provides a grab-type sediment sampler, comprising a left grab bucket, a right grab bucket, a left rib plate, a right rib plate, a grab bucket supporting beam and flying rings. The grab-type sediment sampler is characterized in that the lower part of the left end of the left grab bucket and the lower part of the right end of the right grab bucket are respectively and fixedly provided with a left weight sleeve and a right weight sleeve which are arranged in a mirror symmetry manner; and the small flying rings are respectively and fixedly mounted on the outer sides of the left and right weight sleeves in a mirror symmetry manner. On the basis of the conventional grab-type sediment sampler, balancing rods are respectively added at the both ends of the supporting beam to improve the balance state of the grab buckets underwater and improve the capability of resisting influences of water flow, subterranean flow, terrain and the like of the grab buckets; and in grab bucket lifting and releasing processes, the balance rods can be taken as handles to be convenient for an operator to stabilize the sediment sampler and to facilitate the operation, so that the collection operation efficiency and the sampling fidelity of sediments in field water areas can be improved, and operations depending on the grab-type samping can be improved well.

Description

technical field [0001] The invention belongs to the field of measurement, and relates to the sampling of underwater sediments, in particular to a grab-type sediment sampler. Background technique [0002] Bottom sediment sampling is one of the basic means of water environment and resource investigation. After years of investigation practice and continuous improvement and perfection of field workers, a variety of effective sediment sampling methods have been developed and studied. A variety of sampling devices have been successfully developed to adapt to different sampling requirements and sampling operating conditions. [0003] The bottom sediment sampler (sampler, sampling device) is the most basic instrument for collecting bottom sediment samples. Different samplers can be divided into various types according to the operation method and the degree of disturbance of the sample layer. According to different operating methods, bottom sediment samplers can be divided into the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/12
Inventor 刘宪斌田胜艳
Owner TIANJIN UNIV OF SCI & TECH
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