Columnar sampler for seabed soil

Abstract

The utility model provides a columnar sampler for seabed soil, and aims to solve the problem that the sampler is inconvenient to keep the soil surface vertical due to the fact that the conventional columnar sampler for the seabed soil is usually hoisted to the seabed by hoisting equipment, the following scheme is provided: the columnar sampler comprises a main control box, and an external shell is fixedly arranged in the center of the bottom of the main control box; a sampling barrel is vertically mounted in the external shell in a sliding manner, the sampling barrel comprises two half shells, and two electrical boxes are fixedly mounted on the outer side of the external shell. The winch drives the counterweight ring to move downwards relative to the external shell and drives the second rotating plate to swing downwards relative to the initial position, so that the bent plates abut against the soil, the three bent plates which are circumferentially arranged at equal intervals abut against the soil, the external shell is supported, the external shell is kept perpendicular to the soil all the time, follow-up sampling is facilitated, and the sampling efficiency is improved. And the counterweight ring moves downwards relative to the external shell, so that the gravity center of the whole device is lowered, and the stability is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of soil sampling, in particular to a submarine soil columnar sampler. Background Art

[0002] A seabed soil column sampler is a tool specially designed to obtain sediment column samples from the seabed. This equipment is very important in fields such as marine geology, environmental science, and resource exploration. The design of column samplers varies, but the basic principles are similar. It has a long tubular structure that can penetrate the seabed surface and capture sediment samples within a certain depth range. Secondly, if the sampler enters the sediment at an angle, it may cause mixing of different layers. Vertical insertion helps prevent sediment from slipping out or losing from the sampling tube.

[0003] Existing seabed soil column samplers are usually hoisted to the seabed by lifting equipment. This method is affected by many factors such as ship shaking, seawater flow and cable tension, making it inconvenient for the sampler to remain vertical to the soil surface, affecting the sampling quality. Secondly, the column sampler has the problem of difficulty in sampling. Therefore, we propose a seabed soil column sampler to solve this problem. Utility Model Content

[0004] The purpose of the utility model is to solve the problems raised in the above background technology and to propose a submarine soil columnar sampler.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A submarine soil column sampler comprises a main control box, an external shell is fixedly mounted at the bottom center of the main control box, a sampling barrel is vertically slidably mounted in the external shell, the sampling barrel comprises two half shells, two electrical boxes are fixedly mounted on the outside of the external shell, a gear is rotatably mounted in the electrical box, two racks are fixedly mounted on the outside of the sampling barrel, two connecting holes are provided on the outside of the external shell, the gears pass through the connecting holes and mesh with the corresponding racks, a through hole is provided at the top of the sampling barrel, a piston plate is slidingly and sealingly mounted in the sampling barrel, a mounting plate is fixedly mounted on the top of the main control box, and a lifting ring mechanism is fixedly mounted at the top center of the mounting plate.

[0007] In a preferred embodiment, a partition is provided in the electrical box, and a same rotating shaft is rotatably installed between the partition and the rear inner wall of the corresponding electrical box. The gear is fixedly sleeved on the outside of the corresponding rotating shaft, and a servo motor is fixedly installed on the front inner wall of the electrical box. The output shaft of the servo motor is fixedly connected to the corresponding rotating shaft.

[0008] In a preferred embodiment, a trapezoidal plate and two guide plates are fixedly installed on the outer side of the half shell, the trapezoidal plate and the corresponding rack are located on the same vertical line, a plurality of guide grooves are opened on the inner wall of the external shell, and the guide plates are slidably installed in the corresponding guide grooves.

[0009] In a preferred embodiment, the outer vertical sliding sleeve of the external shell is provided with a counterweight ring, and multiple circular shafts 1 are fixedly installed on the bottom of the counterweight ring. Two rotating plates 1 are provided on the outer rotating sleeve of the circular shaft 1, and the same circular shaft 2 is fixedly installed between two adjacent rotating plates 1. A rotating plate 2 is rotatably installed on the outer side of the circular shaft 2, and the rotating plate 2 is rotatably connected to the outer side of the external shell, and a bent plate is fixedly installed on one side of the rotating plate 2.

[0010] In a preferred embodiment, a sensor, a transmitter and a power supply are provided in the main control box, and two winches are provided on the bottom inner wall of the main control box. A steel wire rope is wound around the outside of the winch, and one end of the steel wire rope is fixedly connected to the counterweight ring.

[0011] In a preferred embodiment, a limit plate is fixedly installed on the outer side of the external shell, a notch is opened on the inner wall of the counterweight ring, and the limit plate is slidably installed in the notch.

[0012] The beneficial effects of the utility model are:

[0013] 1. The winch drives the counterweight ring to move downward relative to the external shell, and the counterweight ring drives multiple rotating plates to move downward. Since the rotating plate one is restricted by the rotating plate two, the rotating plate one swings upward relative to the initial position, thereby driving the rotating plate two to swing downward relative to the initial position, so that the bent plate abuts against the soil. The three bent plates arranged at equal intervals on the circumference abut against the soil, which supports the external shell and keeps the external shell always perpendicular to the soil, facilitating subsequent sampling. In addition, the counterweight ring moves downward relative to the external shell, which lowers the center of gravity of the entire device and further improves stability.

[0014] 2. By starting a servo motor separately, the half shell of the inner wall of the sliding surface is driven to reset, that is, the two half shells are separated. The soil has better adhesion to the inner wall of the rough surface and remains stable with the rough half shell. The piston plate is restricted by the rough half shell and moves relative to the sliding half shell, thereby limiting the soil in the sliding half shell and preventing the soil from moving with the sliding half shell, thereby improving the separation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of a submarine soil columnar sampler proposed by the present invention from a first perspective;

[0016] Figure 2This is a schematic diagram of the three-dimensional structure of a submarine soil columnar sampler proposed by the present invention from a second perspective;

[0017] Figure 3 This is a schematic cross-sectional view of a submarine soil columnar sampler proposed in the present invention;

[0018] Figure 4 for Figure 3 A partial enlarged view of part A;

[0019] Figure 5 for Figure 3 A partial enlarged view of part B;

[0020] Figure 6 This is a schematic diagram of the three-dimensional structure of a half shell of a submarine soil columnar sampler proposed in the present invention.

[0021] The reference numerals are as follows:

[0022] In the figure: 1. Main control box; 2. External shell; 3. Sampling tube; 4. Electrical box; 5. Gear; 6. Rack; 7. Through hole; 8. Piston plate; 9. Lifting ring mechanism; 10. Rotating shaft; 11. Trapezoidal plate; 12. Guide plate; 13. Counterweight ring; 14. Rotating plate 1; 15. Rotating plate 2; 16. Bending plate; 17. Wire rope; 18. Limiting plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Reference Figure 1-6 A submarine soil column sampler comprises a main control box 1, an external shell 2 is fixedly installed at the bottom center of the main control box 1, a sampling tube 3 is vertically slidably installed in the external shell 2, the sampling tube 3 comprises two half shells, two electrical boxes 4 are fixedly installed on the outside of the external shell 2, a gear 5 is rotatably installed in the electrical box 4, two racks 6 are fixedly installed on the outside of the sampling tube 3, two connecting holes are provided on the outside of the external shell 2, the gears 5 pass through the connecting holes and mesh with the corresponding racks 6, a through hole 7 is provided at the top of the sampling tube 3, a piston plate 8 is slidingly and sealingly installed in the sampling tube 3, a mounting plate is fixedly installed on the top of the main control box 1, and a lifting ring mechanism 9 is fixedly installed at the top center of the mounting plate.

[0025] like Figure 4As shown, a partition is provided in the electrical box 4, and the same rotating shaft 10 is rotatably installed between the partition and the corresponding rear inner wall of the electrical box 4, and the gear 5 is fixedly sleeved on the outer side of the corresponding rotating shaft 10. A servo motor is fixedly installed on the front inner wall of the electrical box 4, and the output shaft of the servo motor is fixedly connected to the corresponding rotating shaft 10. The gear 5 is driven to rotate by the cooperation of the servo motor and the rotating shaft 10, and the gear 5 drives the sampling tube 3 to move vertically by engaging with the rack 6, and the movement of each half shell is driven by an independent set of gears 5, racks 6 and servo motors, and the inner walls of the two half shells are respectively set to smooth and rough surfaces.

[0026] like Figure 6 As shown, a trapezoidal plate 11 and two guide plates 12 are fixedly installed on the outside of the half shell. The trapezoidal plate 11 and the corresponding rack 6 are located on the same vertical line. A plurality of guide grooves are provided on the inner wall of the external shell 2. The guide plates 12 are slidably installed in the corresponding guide grooves. The cooperation between the guide plates 12 and the guide grooves guides the movement of the sampling tube 3. The trapezoidal plate 11 is arranged below the rack 6 so that when the sampling tube 3 is inserted into the soil, the trapezoidal plate 11 opens a long groove in the soil. The long groove is used for the rack 6 to move to prevent the soil from being contaminated on the rack 6.

[0027] like Figure 1 and Figure 2 As shown, the outer vertical sliding sleeve of the external shell 2 is provided with a counterweight ring 13, and multiple circular shafts 1 are fixedly installed on the bottom of the counterweight ring 13. Two rotating plates 14 are provided on the outer rotating sleeve of the circular shaft 1. The same circular shaft 2 is fixedly installed between the two adjacent rotating plates 14. A rotating plate 2 15 is rotatably installed on the outer side of the circular shaft 2. The rotating plate 2 15 is rotatably connected to the outer side of the external shell 2, and a bent plate 16 is fixedly installed on one side of the rotating plate 2 15.

[0028] In the present utility model, a sensor, a transmitter and a power supply are provided in the main control box 1. Two winches are provided on the inner wall of the bottom of the main control box 1. A steel wire rope 17 is wound around the outside of the winch. One end of the steel wire rope 17 is fixedly connected to the counterweight ring 13. Existing seabed samplers usually integrate cameras and other sensors to allow operators to monitor the sampling process and make necessary adjustments. They can also be equipped with acoustic signal transmitters to facilitate positioning and communication. These are commonly used technical means.

[0029] It should be noted that when the bottom of the entire device to the external shell 2 contacts the seabed soil, the two winches are started, thereby driving the counterweight ring 13 to move downward, and the counterweight ring 13 drives multiple rotating plates 14 to move downward. Since the rotating plate 14 is restricted by the rotating plate 2 15, the rotating plate 14 swings upward relative to the initial position, and then drives the rotating plate 2 15 to swing downward relative to the initial position, so that the bent plate 16 abuts against the soil. Through three bent plates 16 arranged at equal intervals around the circumference, they abut against the soil, which supports the external shell 2 and keeps the external shell 2 always perpendicular to the soil, which is convenient for subsequent sampling. The setting of the bent plate 16 is because the distance that the counterweight ring 13 descends each time may be different, and the bent plate 16 has more contact points with the soil than the flat plate, and the counterweight ring 13 moves downward relative to the external shell, which lowers the center of gravity of the entire device and further improves stability.

[0030] like Figure 2 As shown, a limit plate 18 is fixedly installed on the outer side of the external shell 2, and a notch is opened on the inner wall of the counterweight ring 13. The limit plate 18 is slidably installed in the notch to guide the movement of the counterweight ring 13.

[0031] The working principle of the present invention is as follows: the entire device is lowered to the seabed by connecting the lifting equipment and the lifting ring mechanism 9 until the multiple bent plates 16 abut against the seabed soil, so that the external shell 2 is perpendicular to the soil surface, and the two servo motors are started to drive the two gears 5 to rotate. The gear 5 drives the sampling tube 3 to move vertically by meshing with the rack 6, that is, drives the sampling tube 3 to be inserted into the soil. During the descent, the soil entering the sampling tube 3 drives the piston plate 8 to move upward relative to the sampling tube 3, thereby discharging the air or water in the sampling tube 3 from the through hole 7. When the piston plate 8 moves to abut against the top of the sampling tube 3, the servo motor drives the gear 5 to reverse, thereby driving the sampling tube 3 to move upward and reset, until the sampling tube 3 is completely received in the external shell 2, thereby realizing the sampling function;

[0032] When taking out the soil sample, the two gears 5 are first driven to rotate synchronously in opposite directions, thereby extending the sampling tube 3 out of the external shell 2. After that, a servo motor is started separately to drive the half shell of the smooth inner wall to reset, that is, the two half shells are separated. The soil remains stable with the rough half shell due to its better adhesion to the rough inner wall, and the piston plate 8 is restricted by the rough half shell and moves relative to the smooth half shell, thereby limiting the soil in the smooth half shell and preventing the soil from moving with the sliding half shell, thereby improving the separation effect.

[0033] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A submarine soil column sampler, characterized in that: The invention comprises a main control box (1), wherein an external shell (2) is fixedly installed at the bottom center of the main control box (1), a sampling cylinder (3) is vertically slidably installed in the external shell (2), and the sampling cylinder (3) comprises two half shells, two electrical boxes (4) are fixedly installed on the outside of the external shell (2), a gear (5) is rotatably installed in the electrical box (4), two racks (6) are fixedly installed on the outside of the sampling cylinder (3), two connecting holes are provided on the outside of the external shell (2), the gears (5) pass through the connecting holes and mesh with the corresponding racks (6), a through hole (7) is provided at the top of the sampling cylinder (3), a piston plate (8) is slidably sealed and installed in the sampling cylinder (3), a mounting plate is fixedly installed on the top of the main control box (1), and a lifting ring mechanism (9) is fixedly installed at the top center of the mounting plate.

2. A submarine soil column sampler according to claim 1, characterized in that: A partition is provided in the electrical box (4), and a common rotating shaft (10) is rotatably mounted between the partition and the rear inner wall of the corresponding electrical box (4). The gear (5) is fixedly sleeved on the outer side of the corresponding rotating shaft (10). A servo motor is fixedly mounted on the front inner wall of the electrical box (4), and the output shaft of the servo motor is fixedly connected to the corresponding rotating shaft (10).

3. A submarine soil column sampler according to claim 1, characterized in that: A trapezoidal plate (11) and two guide plates (12) are fixedly mounted on the outer side of the half shell, the trapezoidal plate (11) and the corresponding rack (6) are located on the same vertical line, a plurality of guide grooves are provided on the inner wall of the external shell (2), and the guide plates (12) are slidably mounted in the corresponding guide grooves.

4. A submarine soil column sampler according to claim 1, characterized in that: The outer vertical sliding sleeve of the external shell (2) is provided with a counterweight ring (13), and a plurality of circular shafts (1) are fixedly installed on the bottom of the counterweight ring (13). Two rotating plates (14) are rotatably mounted on the outer side of the circular shaft (1), and the same circular shaft (2) is fixedly installed between two adjacent rotating plates (14). A rotating plate (15) is rotatably mounted on the outer side of the circular shaft (2). The rotating plate (15) is rotatably connected to the outer side of the external shell (2), and a bent plate (16) is fixedly installed on one side of the rotating plate (15).

5. A submarine soil column sampler according to claim 4, characterized in that: The main control box (1) is provided with a sensor, a transmitter and a power supply. Two winches are provided on the inner wall of the bottom of the main control box (1). A steel wire rope (17) is wound around the outer side of the winch. One end of the steel wire rope (17) is fixedly connected to the counterweight ring (13).

6. A submarine soil column sampler according to claim 4, characterized in that: A limit plate (18) is fixedly mounted on the outer side of the external shell (2), a notch is provided on the inner wall of the counterweight ring (13), and the limit plate (18) is slidably mounted in the notch.

Images