Novel undisturbed marine sediment sampling tool bit

• Main Authors: ZHONG FUCHANG, XIANG RONG, QI YONGFENG, YAN SHENGFU, YANG YIPING, YANG YING, YANG ZHOU, XING HUANLIN, XU KE, MAO HUABIN, YU LINGHUI, LI XIANPENG, ZHONG WANXUAN
• Format: Patent
• Language: Chinese; English
• Published: 04.04.2023
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a novel undisturbed marine sediment sampling tool bit which comprises an outer cylinder, an inner cylinder, a turnover lever assembly and a petal assembly, when a sampler moves downwards, petals are clamped by utilizing upward force of water flow and sediment on a turnover lever, and the petals are kept in an open state all the time in the whole sampling process; and when the sampler finishes sampling and starts to be lifted upwards, the petals are pried by utilizing the downward acting force of the sediment on the overturning lever, so that the petals are closed. According to the tool bit disclosed by the invention, natural resistance generated by water flow, sediments and the like is utilized, and the petals are always in an open state and cling to the inner wall in the whole sampling process through linkage of the overturning lever and the petals, so that the problem that the elastic petals generate disturbance and resistance to sediment sampling can be effectively solved; the petal