An underwater vibration sampling device

Abstract

The present invention relates to the technical field of underwater sediment sampling, and more specifically, to an underwater vibration sampling device. The device includes a base, a sampling tube, a vibration motor, a slide and a slide rail. The sampling tube is a hollow tubular structure, and the sampling tube vertically penetrates the base; the slide rail is fixed to the base and remains parallel to the sampling tube; the slide is arranged at the top of the sampling tube and is hinged to the sampling tube, and the horizontal sides of the slide slide with the slide rail; the vibration motor seat is fixed to the slide, and the vibration drives the slide to press the sampling tube downward to move. The present invention regulates and limits the movement route of the sampling tube, which is convenient for the sampling tube to drill vertically into the underwater sediment layer. Moreover, the sample can be effectively retained in the sampling tube, which is not easy to leak out, thereby ensuring the integrity of the sample and improving the sampling quality.

Description

Technical Field

[0001] The invention relates to the technical field of underwater sediment sampling, and more specifically, to an underwater vibration sampling device. Background Art

[0002] Seabed sampling mainly refers to the sampling of seabed sediments or soil layers. It is an indispensable technical method for studying marine geology, searching for minerals and energy resources, conducting engineering geological surveys on the continental shelf, and completing other marine infrastructure construction tasks. At present, the sampling of seabed sediments mainly uses ships to sink the sampling device to the seabed. The sampling device relies on its own energy or the energy on the ship to penetrate or drill into the seabed sediment at a designated position to complete a one-time sampling. Among them, a common method for sinking the sampling tube using a vibration motor is to use a vibration motor to drive the sampling tube to sink. However, when the sampling tube is pressed down by the exciting force of the vibration motor, it is easy to tilt to both sides due to the swinging force, which is not convenient for vertical drilling into the sediment layer. Moreover, when the existing sampling tube is extracted from the sediment layer, due to the scouring of water or other external forces, it is easy to cause the sample in the sampling tube to leak out, affecting the sample quality. Therefore, it is of great significance to design a more convenient and practical sampling device. Summary of the invention

[0003] In order to overcome the defects of the above-mentioned prior art, the present invention provides an underwater vibration sampling device, which regulates and limits the movement route of the sampling tube, facilitates the sampling tube to vertically drill into the underwater sediment layer, and can effectively retain the sample in the sampling tube, which is not easy to leak out, thereby ensuring the integrity of the sample and improving the sampling quality.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] An underwater vibration sampling device includes a base, a sampling tube, a vibration motor, a slide and a slide rail. The sampling tube is a hollow tubular structure, and the sampling tube is vertically arranged through the base; the slide rail is fixed to the base and remains parallel to the sampling tube; the slide is arranged at the top of the sampling tube and is hinged to the sampling tube, and the horizontal sides of the slide slide with the slide rail; the vibration motor seat is fixed to the slide, and the vibration drives the slide to press the sampling tube downward to move. Among them, the vibration motor is connected to a power supply through an electric wire and cable line. The vibration motor generates an exciting force to drive the slide downward. On the one hand, the slide slides down along the slide rail line, and on the other hand, it vertically pushes the sampling tube downward to effectively regulate the movement route of the sampling tube.

[0006] Furthermore, the vibration motor is provided with an eccentric block group, and the eccentric block group includes two symmetrically rotating eccentric blocks. The vibration motor is provided with a group of eccentric blocks at each end of the rotor shaft, and the centrifugal force generated by the high-speed rotation of the shaft and the eccentric blocks is used to obtain the exciting force. An eccentric block group includes two symmetrically rotating eccentric blocks, which can effectively reduce the swing force.

[0007] Furthermore, a partition is provided at the top of the sampling tube, the partition is divided into a partition layer, and the partition layer is provided with a drainage hole; a baffle is provided in the partition layer, the baffle is connected to a support rod penetrating the partition, the length of the support rod is greater than the thickness of the partition, and a clamp is locked at the movable end of the support rod; the partition is provided with a plurality of water holes, and the baffle is sufficient to cover all water holes when it is attached to the partition. The top of the sampling tube is closed and the bottom is open. The baffle and the support rod are integrally formed, and the baffle slides back and forth along the support rod relative to the partition. The vibration motor is hinged to the top of the sampling tube through a slide seat, and the hinged structure is used to buffer the collision caused by the exciting force, effectively and normally extending the service life of related components.

[0008] Furthermore, a soft interception layer and a plurality of claws are provided on the inner side of the bottom end of the sampling tube, the outer edge of the soft interception layer is connected to the inner wall of the sampling tube, and an inner through hole is left in the center of the soft interception layer; the claws are evenly distributed around the inner wall of the sampling tube, the fixed end of the claw is hinged to the sampling tube, and the movable end of the claw tightens the edge of the inner through hole of the soft interception layer. The claws and soft interception layer provided at the bottom end of the sampling tube prevent the sample from leaking out from the bottom of the sampling tube, wherein the soft interception layer is a mesh layer or a cloth layer. When sampling, the sampling tube moves downward, and the sample flows into the sampling tube, the claws rotate upward and open the inner through hole of the soft interception layer, and the sample enters the sampling tube smoothly. When withdrawing, the sampling tube moves upward, and the claws rotate downward due to the gravity of the head, and close the soft interception layer, thereby intercepting the leakage of the sample from the bottom.

[0009] Furthermore, the inner wall of the sampling tube is also provided with a claw groove for accommodating the claw; the bottom end of the sampling tube is provided with a collar for clamping the outer edge of the soft interception layer, and the inner diameter of the collar is equivalent to the inner diameter of the sampling tube. When the claw is turned upward, the claw is embedded in the claw groove, which is conducive to enlarging the inner through hole of the soft interception layer and facilitating the sample to enter the sampling tube. The outer edge of the soft interception layer is pressed against the inner wall of the sampling tube by the collar.

[0010] Furthermore, the support rod is sleeved with a return spring, and the two ends of the return spring abut against the partition and the clamping member respectively. In order to ensure that the baffle is fitted to the partition as much as possible when the sampling tube is drawn out, and to stably cover all water holes, a return spring is added, and the spring elastic force is used to make the baffle fit closely.

[0011] Furthermore, a hollow drill bit is provided at the bottom of the sampling tube, and the inner diameter of the drill bit is equivalent to the inner diameter of the sampling tube. The drill bit is threadedly connected to the sampling tube, and the tip of the drill bit faces downward, so as to facilitate drilling into the underwater sediment layer for sampling.

[0012] Furthermore, the sampling tube is composed of a plurality of branch tubes, each branch tube being threadedly connected in sequence. When performing underwater sampling, a suitable number of branch tubes can be selected for assembly according to the water depth. Moreover, the assembly method is convenient for carrying and moving the sampling tube in daily life.

[0013] Furthermore, it also includes a drag chain for storing and protecting the line, the drag chain is fixed to the slide rail, and the moving direction of the drag chain remains vertical. Since the vibration motor is connected to the relevant wire and cable lines, in order to prevent the lines from affecting the operation of the device or being damaged, the drag chain is used to store and protect the lines.

[0014] Furthermore, the base is provided with a hoop for guiding the sampling tube, and the hoop is close to the bottom end of the sampling tube to further restrict the movement of the sampling tube.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the underwater vibration sampling device of the present invention adopts a slide seat and a slide rail to limit the movement route of the sampling tube, and adopts a double eccentric block vibration motor that effectively reduces the swing force, which is conducive to regulating and limiting the movement route of the sampling tube, so that the sampling tube can vertically drill into the underwater sediment layer. Moreover, corresponding structures are arranged at the top and bottom of the sampling tube to retain the sample in the sampling tube, effectively preventing the sample from leaking out, ensuring the integrity of the sample, and improving the sampling quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 This is a partial enlarged view of position A.

[0018] Figure 3 This is the internal structure diagram of the vibration motor.

[0019] Figure 4 It is a schematic diagram of the overall structure of the sampling tube.

[0020] Figure 5 This is a diagram of the internal structure of the top of the sampling tube.

[0021] Figure 6 This is a diagram of the internal structure at the bottom end of the sampling tube.

[0022] Figure 7 It is an exploded view of the bottom assembly of the sampling tube.

[0023] Figure 8 It is a schematic diagram of the soft interception layer structure.

[0024] Among them, 1 base, 2 sampling tube, 3 vibration motor, 4 slide seat, 5 slide rail, 6 eccentric block, 7 drag chain, 8 clamp, 9 partition, 10 partition, 11 drainage hole, 12 baffle, 13 support rod, 14 clamping piece, 15 water hole, 16 soft intercepting layer, 17 claw, 18 inner through hole, 19 claw groove, 20 collar, 21 reset spring, 22 drill bit, 23 branch pipe. DETAILED DESCRIPTION

[0025] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0026] Example

[0027] like Figure 1 As shown, this embodiment provides an underwater vibration sampling device, including a base 1, a sampling tube 2, a vibration motor 3, a slide 4 and a slide rail 5. The sampling tube 2 is a hollow tubular structure, and the sampling tube 2 vertically penetrates the base 1, wherein the base 1 is provided with a clamp 8 for guiding the sampling tube 2, and the clamp 8 is close to the bottom end of the sampling tube 2 to constrain the sampling tube 2 to move vertically downward.

[0028] Specifically, Figure 2 As shown, the slide rail 5 is fixed to the base 1, located on both sides of the sampling tube 2 and kept parallel to the sampling tube 2. The slide seat 4 is arranged on the top of the sampling tube 2 and is hinged to the sampling tube 2. The slide seat 4 is provided with pulleys on both horizontal sides, and the pulleys and the slide rail 5 are slidably matched. The vibration motor 3 is hinged to the top of the sampling tube 2 through the slide seat 4, and the collision caused by the exciting force is buffered by the hinge structure, which effectively and normally prolongs the service life of related components.

[0029] At the same time, if Figure 3 As shown, the vibration motor 3 is fixed on the slide 4, and the vibration drives the slide 4 to press the sampling tube 2 to move. Specifically, the vibration motor 3 is provided with an eccentric block group, and the eccentric block group includes two symmetrically rotating eccentric blocks 6. The vibration motor 3 is a group of eccentric blocks 6 installed at both ends of the rotor shaft, and the centrifugal force generated by the high-speed rotation of the shaft and the eccentric blocks 6 is used to obtain the exciting force. One eccentric block group includes two symmetrically rotating eccentric blocks 6, which can effectively reduce the swing force.

[0030] Furthermore, the device also includes a drag chain 7 for storing and protecting the circuit, the drag chain 7 is fixed to the slide rail 5, and the moving direction of the drag chain 7 remains vertical. The vibration motor 3 is connected to a power source through a wire and cable line. Since the vibration motor 3 is connected to the relevant wire and cable line, in order to prevent the line from affecting the operation of the device or being damaged, the drag chain 7 is used to store and protect the line.

[0031] Specifically, Figure 4-5As shown, a partition 9 is provided at the top of the sampling tube 2, and the partition 9 is divided into a partition layer 10, and the partition layer 10 is provided with a drainage hole 11. A baffle 12 is provided in the partition layer 10, and the baffle 12 is connected to a support rod 13 that passes through the partition 9. The length of the support rod 13 is greater than the thickness of the partition 9, so the baffle 12 can slide up and down with the support rod 13. At the same time, the partition 9 is provided with a plurality of water holes 15. When the baffle 12 is attached to the partition 9, it is sufficient to cover all the water holes 15, so that the top of the sampling tube 2 is formed in a sealed state. Here, the baffle 12 can be replaced by a piston, and the piston rod has a similar function to the support rod 13. The movable end of the support rod 13 is locked with a clamping piece 14, which is a locking nut, mainly used to limit the maximum movement distance of the baffle 12.

[0032] In this embodiment, the support rod 13 is also sleeved with a return spring 21, and the two ends of the return spring 21 respectively abut against the partition 9 and the clamping member 14. When the sampling tube 2 moves up, the spring force is used to cause the baffle 12 to fit tightly on the partition 9, stably covering all the water holes 15.

[0033] In addition, if Figure 6-8 As shown, a soft intercepting layer 16 and four claws 17 are provided on the inner side of the bottom end of the sampling tube 2. In this embodiment, the soft intercepting layer 16 is a cloth-like layer, and an inner through hole 18 is left in the center of the cloth-like layer. The claws 17 are evenly distributed around the inner wall of the sampling tube 2, and a 90° angle is formed between each other. The inner wall of the sampling tube 2 is provided with a claw groove 19 for accommodating the claws 17. The fixed end of the claw 17 is hinged to the sampling tube 2, and the movable end of the claw 17 tightens the edge of the inner through hole 18 of the soft intercepting layer 16.

[0034] At the same time, the outer edge of the soft intercepting layer 16 is connected to the inner wall of the sampling tube 2. Specifically, a ring 20 for clamping the outer edge of the soft intercepting layer 16 is provided at the bottom end of the sampling tube 2. The outer edge of the soft intercepting layer 16 is pressed against the inner wall of the sampling tube 2 by the ring 20. Here, the inner diameter of the ring 20 is equivalent to the inner diameter of the sampling tube 2.

[0035] Furthermore, a hollow drill bit 22 is provided at the bottom of the sampling tube 2, and the drill bit 22 is threadedly connected to the sampling tube 2. The inner diameter of the drill bit 22 is equivalent to the inner diameter of the sampling tube 2. In this embodiment, the drill bit 22 presses the collar 20 to clamp the soft interception layer 16. The tip of the drill bit 22 faces downward, which is convenient for drilling into the underwater sediment layer for sampling.

[0036] Furthermore, the sampling tube 2 is composed of a plurality of branch tubes 23, and each branch tube 23 is threadedly connected in sequence from head to tail. According to the water depth, a suitable number of branch tubes 23 can be selected for assembly.

[0037] When the device is in use, the entire device sinks to the bottom of the water and is placed on the sediment layer. The vibration motor 3 is started, and the eccentric block 6 rotates to generate an exciting force, driving the slide 4 to press down. On the one hand, the slide 4 vertically pushes the sampling tube 2 to move downward, and on the other hand, the slide 4 slides along the slide rail 5. Combined with the clamp 8 at the bottom of the sampling tube 2 that plays a guiding role, the movement route of the sampling tube 2 is effectively regulated.

[0038] When sampling sediment, the sampling tube 2 first sinks vertically underwater. At this time, water flows into the sampling tube 2. The water flow pressure overcomes the elastic force of the reset spring 21, pushing the baffle 12 upward, and the water flows into the partition 10 through the water hole 15 of the partition 9, and finally discharges from the drainage hole 11 of the partition 10, reducing the water pressure of the sampling tube 2. When the vibration motor 3 is started, the sampling tube 2 is driven to drill into the sediment layer. When the bottom end of the sampling tube 2 drills into the underwater sediment layer, the sample flows into the sampling tube 2, the claw 17 rotates upward and pulls open the inner through hole 18 of the soft interception layer 16, and the sample enters the sampling tube 2 smoothly.

[0039] When sampling is completed and the sampling tube 2 is pulled out from underwater, the sampling tube 2 moves upward, and the claw 17 rotates downward due to the gravity of the head, and pulls the soft interception layer 16 to shrink the inner through hole 18 to the minimum, thereby intercepting the leakage of the sample from the bottom. At the same time, when the sampling tube 2 moves upward, the water flow no longer enters from the bottom of the sampling tube 2. At this time, the baffle 12 is re-attached to the partition 9 by the elastic force of the reset spring 21, covering all the water holes 15, so that the inside of the sampling tube 2 forms a sealed state. Due to the effect of external pressure, the sample is further firmly pressed in the sampling tube 2 and is not easy to leak out.

[0040] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An underwater vibration sampling device, characterized in that: The invention comprises a base (1), a sampling tube (2), a vibration motor (3), a slide seat (4) and a slide rail (5), wherein the sampling tube (2) is a hollow tubular structure, and the sampling tube (2) is vertically penetrated through the base (1); the slide rail (5) is fixed to the base (1) and maintained parallel to the sampling tube (2); the slide seat (4) is arranged at the top of the sampling tube (2) and is hinged to the sampling tube (2), and the horizontal sides of the slide seat (4) are slidably matched with the slide rail (5); the vibration motor (3) is fixed to the slide seat (4), and the vibration drives the slide seat (4) to press the sampling tube (2) downward to move; the vibration motor (3) is rotatably provided with an eccentric block group, and the eccentric block group includes two symmetrically rotating eccentric blocks (6); a partition plate (9) is provided at the top of the sampling tube (2), and the partition plate (9) is divided into a partition layer (10), and the partition layer (10) is provided with a drainage hole (11); The partition (10) is provided with a baffle (12), the baffle (12) is connected with a support rod (13) penetrating the partition (9), the length of the support rod (13) is greater than the thickness of the partition (9), and a clamping piece (14) is locked at the movable end of the support rod (13); the partition (9) is provided with a plurality of water holes (15), and when the baffle (12) is attached to the partition (9), it is sufficient to cover all the water holes (15); the inner side of the bottom end of the sampling tube (2) A soft intercepting layer (16) and a plurality of pulling claws (17) are provided, wherein the outer edge of the soft intercepting layer (16) is connected to the inner wall of the sampling tube (2), and an inner through hole (18) is reserved in the center of the soft intercepting layer (16); the pulling claws (17) are evenly distributed around the inner wall of the sampling tube (2), the fixed end of the pulling claw (17) is hinged to the sampling tube (2), and the movable end of the pulling claw (17) tightens the edge of the inner through hole (18) of the soft intercepting layer (16).

2. An underwater vibration sampling device according to claim 1, characterized in that: The inner wall of the sampling tube (2) is also provided with a claw groove (19) for accommodating the claw (17); the bottom end of the sampling tube (2) is provided with a ring (20) for clamping the outer edge of the soft intercepting layer (16), and the inner diameter of the ring (20) is equivalent to the inner diameter of the sampling tube (2).

3. An underwater vibration sampling device according to claim 2, characterized in that: The support rod (13) is sleeved with a return spring (21), and two ends of the return spring (21) respectively abut against the partition plate (9) and the clamping piece (14).

4. An underwater vibration sampling device according to claim 1, characterized in that: A hollow drill bit (22) is also provided at the bottom end of the sampling tube (2), and the inner diameter of the drill bit (22) is equivalent to the inner diameter of the sampling tube (2).

5. An underwater vibration sampling device according to claim 1, characterized in that: The sampling tube (2) is composed of a plurality of branch tubes (23), and the branch tubes (23) are threadedly connected in sequence from head to tail.

6. An underwater vibration sampling device according to claim 1, characterized in that: It also includes a drag chain (7) for storing and protecting the lines. The drag chain (7) is fixed to the slide rail (5), and the movement direction of the drag chain (7) remains vertical.

7. An underwater vibration sampling device according to claim 1, characterized in that: The base (1) is provided with a clamp (8) for guiding the sampling tube (2).

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