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CN-224216323-U - Sampling device for seabed soil

CN224216323UCN 224216323 UCN224216323 UCN 224216323UCN-224216323-U

Abstract

The application provides a submarine soil sampling device which comprises a collecting part, a counterweight mechanism, an opening and closing mechanism and a lifting mechanism, wherein the collecting part is of a hollow structure, a first port and a second port are formed at two ends of the collecting part, the first port is used for discharging a medium in the collecting part, the second port is used for allowing a soil sample to enter the collecting part, the counterweight mechanism is arranged on the collecting part and used for adjusting the weight of the collecting part, the opening and closing mechanism is arranged on the collecting part and used for being connected with a lifting cable, when the lifting acting force of the lifting cable acts on the opening and closing mechanism, the opening and closing mechanism can close the first port, the technical problem that the soil sample cannot be obtained in a large probability in the existing submarine soil sampling device is solved, a relatively closed space is formed in the collecting part through the soil sample and the opening and closing mechanism, internal medium cannot flow out easily, and external seawater cannot flow in easily, so that a stable environment is provided, and the integrity of the soil sample in the recovery process is ensured.

Inventors

  • CHENG YIPIN
  • Ni Chenyu

Assignees

  • 中国交通建设股份有限公司南方分公司

Dates

Publication Date
20260508
Application Date
20250429

Claims (9)

  1. 1. A seafloor soil sampling device comprising: The collecting component is of a hollow structure, a first port and a second port are formed in two ends of the collecting component, the first port is used for discharging media in the collecting component, and the second port is used for allowing soil samples to enter the collecting component; a weight mechanism disposed on the collecting member for adjusting the weight of the collecting member, and The opening and closing mechanism is arranged on the acquisition component and is used for connecting an upward lifting cable; when the lifting force of the lifting cable acts on the opening and closing mechanism, the opening and closing mechanism can close the first port.
  2. 2. The seafloor soil sampling device of claim 1, wherein the opening and closing mechanism comprises: the switching component is sleeved on one end of the acquisition component and is communicated with the first port; the linkage assembly is hinged to the switching component and used for controlling the switching component to be opened and closed; The connecting part is connected to the linkage assembly, a mounting hole is formed in the connecting part and used for connecting the lifting cable.
  3. 3. The seafloor soil sampling device of claim 2, wherein the linkage assembly comprises: The middle parts of the two movable arms are hinged to the switching part, the two movable arms are oppositely arranged on one end port of the switching part, which is far away from the collecting part, so that a closed end and a connecting end are formed on the movable arms, and when the two movable arms are rotated to butt the closed end, the two movable arms can be covered on one end port of the switching part, which is far away from the collecting part; And one ends of the two connecting arms are connected with the connecting part, and the other ends of the two connecting arms are hinged with the connecting ends of the corresponding movable arms.
  4. 4. A sampling device for seafloor soil according to claim 2 or 3, wherein, One end port of the switching component, which is close to the acquisition component, gradually increases towards the other end port so as to form a flaring structure; The movable arm on the linkage assembly is hinged to one end of the transfer component, which is away from the acquisition component.
  5. 5. The seafloor soil sampling device of claim 1, wherein the weight mechanism comprises: a counterweight bracket mounted on the acquisition component; The counterweight component is configured on the counterweight bracket to adjust the balance degree and the weight of the acquisition component; The third counterweight piece is sleeved on the collecting component and positioned in the direction of one side of the counterweight bracket, which is away from the opening and closing mechanism, and the third counterweight piece is used for guiding the collecting component to enable the second port to face the seabed mud layer.
  6. 6. The seafloor soil sampling device of claim 5, wherein the weight support comprises: The sleeve is sleeved on the acquisition component; The mounting boss is connected to one end of the sleeve close to the opening and closing mechanism and extends along the radial direction of the acquisition component; The counterweight assembly includes: The first weight pieces are symmetrically arranged on the mounting boss and are used for forming balance gravity on the acquisition component; and the second weight piece is arranged on the sleeve and is used for adjusting the sinking gravity of the acquisition component.
  7. 7. The seafloor soil sampling device of claim 6, further comprising: The two mounting upright posts are symmetrically arranged on the mounting boss, and the first weight piece is detachably sleeved on the corresponding mounting upright post.
  8. 8. The seafloor soil sampling device of claim 6, wherein, The sleeve comprises a mounting portion and a limiting portion, the mounting boss is detachably arranged at one end of the mounting portion, the limiting portion is located at one end, deviating from the mounting boss, of the mounting portion, the ruler diameter of the limiting portion is larger than that of the mounting portion, the mounting portion is used for accommodating the second counterweight, and the limiting portion is used for limiting the second counterweight to separate from the mounting portion.
  9. 9. The seafloor soil sampling device of claim 5, wherein, The third weight is arranged in a conical structure, and the conical head of the third weight faces the second port.

Description

Sampling device for seabed soil Technical Field The application relates to the technical field of submarine operation sampling equipment, in particular to a submarine soil sampling device. Background The extraction of the seabed soil sample has important significance for marine geology, environmental science research and marine resource development. Through the research on the submarine soil, the composition structure, sediment type and change process of the submarine stratum can be known, and precious data support is provided for understanding the aspects of earth history, climate change, natural disaster prediction and the like. In addition, seafloor soil may also contain abundant mineral or biological resources, the component analysis of which helps to evaluate potential economic value and to formulate a reasonable mining plan. Thus, accurate and efficient extraction of seafloor soil samples is the basis for conducting the above-described research and development activities. Existing seafloor soil sampling devices are typically composed of a soil sampling tube and a counterweight, which is designed to ensure that the sample can be taken deep into the seafloor soil layer during the collection process. Specifically, the mud pipe is lowered to the sea floor by the weight provided by the weight block connected thereto, and continues to penetrate the surface of the sea floor by its own weight until a predetermined depth is reached. In the sinking process, the seabed soil naturally enters an opening at one end of the mud collecting pipe under the action of external pressure, and meanwhile, the opening at the other end of the mud collecting pipe allows internal media (such as seawater or air) to be discharged, so that space is reserved for the newly-entered soil. After the sampling is completed, the whole mud collecting pipe is retracted to the water surface together with the collected soil sample by the lifting equipment. This method is widely used because of its simple and straightforward manner of operation and relatively high efficiency. However, the prior art seafloor soil sampling devices have significant drawbacks. The main problem is that because the two ends of the mud collecting pipe are provided with openings, seawater possibly flows in from one end and pushes soil to flow out from the other end in the ascending process of the mud collecting pipe, and the collected soil sample is incomplete or even lost completely. This is particularly the case in the face of looser sediments, since these materials are more susceptible to loss by the flow of water. Such a result not only wastes valuable sampling opportunities, but also affects the accuracy of subsequent analysis efforts. Therefore, how to improve the existing design of the mud collecting pipe, prevent the sample from losing in the recovery process, and become one of the key challenges for improving the quality of the submarine mud sampling. Disclosure of utility model The embodiment of the application provides a submarine soil sampling device, which solves the technical problem that the existing submarine soil sampling device cannot acquire a finished soil sample with high probability, and adopts the following technical scheme: The embodiment of the application provides a sampling device for submarine soil, which comprises a collecting component, a counterweight mechanism, an opening and closing mechanism and a lifting cable, wherein the collecting component is of a hollow structure, and the two ends of the collecting component are provided with a first port and a second port; when the lifting force of the lifting cable acts on the opening and closing mechanism, the opening and closing mechanism can close the first port. In one embodiment, the opening and closing mechanism comprises a switching part sleeved on one end of the acquisition part and communicated with the first port, a linkage assembly hinged on the switching part and used for controlling the opening and closing of the switching part, and a connecting part connected with the linkage assembly, wherein the connecting part is provided with a mounting hole used for connecting an lifting cable. In one embodiment, the linkage assembly comprises two movable arms, wherein the middle parts of the movable arms are hinged to the switching part, the two movable arms are oppositely arranged on one end port of the switching part, which is far away from the acquisition part, so that a closed end and a connecting end are formed on the movable arms, when the two movable arms are rotated to butt joint the closed end, the two movable arms can be covered on one end port of the switching part, which is far away from the acquisition part, and one ends of the two connecting arms are connected with the connecting part, and the other ends of the two connecting arms are hinged to the connecting ends of the corresponding movable arms. In one embodiment, the transfer member is tapered toward the other end of the col