Underwater accurate feeding device for bottom mud profile in-situ monitoring sensor

Abstract

The invention discloses an underwater accurate throwing device for a bottom mud profile in-situ monitoring sensor, and relates to the technical field of sensor underwater throwing devices.The throwing device comprises a main body mechanism, a telescopic mechanism, a sliding rail mechanism, an unhooking mechanism, a heavy hammer mechanism and the in-situ monitoring sensor. Firstly, the whole throwing device is vertically sunk to the upper portion of bottom mud through a rope, after the main body mechanism makes contact with the bottom and the in-situ monitoring sensor is inserted into the bottom mud, under the action of gravity, the telescopic mechanism starts to contract, the upper end of the main body mechanism descends along the sliding rail mechanism, and after the upper end descends to a set depth, the sliding rail mechanism drives the unhooking mechanism to move; the unhooking mechanism is pulled out of the in-situ monitoring sensor to complete an unlocking action, so that the in-situ monitoring sensor is left in the bottom mud; when it is monitored that the sediment is hard in texture, after the heavy hammer mechanism is pulled through the rope, the main body mechanism is impacted by releasing the heavy hammer mechanism, and the in-situ monitoring sensor is smoothly unhooked and accurately inserted into the sediment.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater sensor delivery devices, and in particular to an underwater precise delivery device for in-situ monitoring sensors of a bottom mud profile. Background Art

[0002] Sediment is a major reservoir of pollutants in aquatic environments, and the distribution of pollutants across its profile has a significant impact on water quality and ecosystems. Sediment profiles record the historical pollution status of water bodies and, in turn, reflect the current ecological quality. Further analysis of sediment profile information can reveal the vertical distribution characteristics of pollutants and clarify their migration and transformation patterns, helping to assess the ecological risk of water bodies. Furthermore, it can trace pollution history, aiding in the identification of pollution sources and the analysis and prediction of their changing trends.

[0003] Most current sediment profile monitoring methods involve collecting sediment core samples ex situ and then bringing them indoors for data extraction. This is not only time-consuming and labor-intensive, but also severely damages the original sediment structure. The lack of a simple, portable deployment aid prevents the precise and stable deployment of in-situ sediment monitoring sensors such as DGT and Peeper to their target underwater locations, significantly limiting their deployment and measurement capabilities in lakes and reservoirs. Therefore, a precise underwater deployment device for in-situ sediment profile monitoring sensors is needed to address this issue. Summary of the Invention

[0004] The purpose of the present invention is to provide an underwater precise placement device for in-situ monitoring sensors of a sediment profile, so as to solve the problems raised in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solutions: The delivery device includes a main body mechanism, a telescopic mechanism, a slide rail mechanism, a decoupling mechanism, a heavy hammer mechanism and an in-situ monitoring sensor. The telescopic mechanism is arranged between the two ends of the main body mechanism, and the two ends of the telescopic mechanism are respectively hinged to the two ends of the main body mechanism. The slide rail mechanism passes through one end of the main body mechanism, and the slide rail mechanism and the other end of the main body mechanism are fixedly connected. One end of the main body mechanism is slidably connected to the slide rail mechanism. The decoupling mechanism is located at one end of the main body mechanism, and the decoupling mechanism and one end of the main body mechanism are fixedly connected. The decoupling mechanism passes through the slide rail mechanism, and the heavy hammer mechanism and one end of the main body mechanism are threadedly connected. The in-situ monitoring sensor is inserted into one end of the main body mechanism from the other end of the main body mechanism, and the in-situ monitoring sensor and the main body mechanism are slidably connected, and the in-situ monitoring sensor and the decoupling mechanism are clamped.

[0006] When the present invention is used, the in-situ monitoring sensor is inserted into the main body mechanism, and then the main body mechanism is pulled vertically upward, the telescopic mechanism is extended, and the main body mechanism slides upward along the slide rail mechanism until the slide rail mechanism drives the unhooking mechanism to move, and the unhooking mechanism is inserted into the in-situ monitoring sensor to engage the in-situ monitoring sensor. When the present invention is deployed, a rope is first used to vertically sink the deployment device as a whole to the upper part of the bottom mud. When the main body mechanism touches the bottom and the in-situ monitoring sensor is inserted into the bottom mud, the telescopic mechanism begins to contract under the action of gravity, and the upper end of the main body mechanism descends along the slide rail mechanism. When it descends to the set depth, the slide rail mechanism drives the unhooking mechanism to move, and the unhooking mechanism is pulled out from the in-situ monitoring sensor to complete the unlocking action, thereby leaving the in-situ monitoring sensor in the bottom mud. When the texture of the monitored sediment is relatively hard, the weight mechanism is pulled by the rope, and the weight mechanism is released vertically to achieve impact on the main body mechanism, so that the in-situ monitoring sensor is smoothly unhooked and accurately inserted into the bottom mud of a predetermined depth.

[0007] Furthermore, the main mechanism includes an upper disc and a lower disc, and the upper disc and the lower disc are located at both ends of the telescopic mechanism. The upper disc is hinged to one end of the telescopic mechanism, and the lower disc is hinged to the other end of the telescopic mechanism. One end of the slide rail mechanism passes through the upper disc, and one end of the slide rail mechanism is slidingly connected to the upper disc, and the other end of the slide rail mechanism is fixedly connected to the lower disc, the upper disc is fixedly connected to the decoupling mechanism, and the upper disc is threadedly connected to the heavy hammer mechanism. Holes are provided on the upper disc and the lower disc, and the in-situ monitoring sensor passes through the holes on the upper disc and the lower disc, and the in-situ monitoring sensor is slidingly connected to the upper disc and the lower disc.

[0008] Multiple through holes are provided on the upper disc and the lower disc, and the through holes are symmetrically arranged about the central axis of the upper disc and the lower disc, thereby reducing the resistance encountered by the delivery device during vertical delivery. At the same time, it can also reduce the pressure of the delivery device on the bottom mud surface, so that the delivery device can be placed stably on the bottom of the water, ensuring the accurate delivery of the in-situ monitoring sensor; the holes and grooves on the upper disc and the lower disc ensure that the in-situ monitoring sensor will not shake during delivery, effectively improving the delivery accuracy of the in-situ monitoring sensor.

[0009] Furthermore, a connecting block is provided on the upper disc, the connecting block is welded to the upper end surface of the upper disc, and the connecting block is threadedly connected to the heavy hammer mechanism.

[0010] The connecting block is located between the weight mechanism and the uncoupling mechanism, and plays the role of protecting the uncoupling mechanism and applying force to the in-situ monitoring sensor, and providing a striking surface for the weight mechanism. When the texture of the monitored sediment is hard, the weight mechanism can be released to strike the connecting block to achieve smooth uncoupling and precise placement of the in-situ monitoring sensor.

[0011] Furthermore, the telescopic mechanism includes an upper connecting rod, a lower connecting rod and a fixed rod, and two upper connecting rods and two lower connecting rods are provided. One end of an upper connecting rod is hinged to the upper disc, the other end of an upper connecting rod is hinged to one end of the fixed rod, one end of another upper connecting rod is hinged to the upper disc, the other end of another upper connecting rod is hinged to the other end of the fixed rod, one end of a lower connecting rod is hinged to the lower disc, the other end of a lower connecting rod is hinged to one end of the fixed rod, one end of another lower connecting rod is hinged to the lower disc, and the other end of another lower connecting rod is hinged to the other end of the fixed rod. The two upper connecting rods, the two lower connecting rods and the fixed rod cooperate with the upper disc and the lower disc to form two rhombuses symmetrical about the fixed rod.

[0012] There are multiple groups of telescopic mechanisms. When telescoping, the upper disc can slide vertically along the slide rail mechanism relative to the lower disc. The diamond-shaped structural design improves the overall stability of the telescopic mechanism, so that the gravity generated by the upper disc and the structure above the upper disc is evenly distributed on the telescopic mechanism, ensuring the vertical placement of the in-situ monitoring sensor.

[0013] Furthermore, the slide rail mechanism is composed of two slides, which are symmetrically arranged about the central axis of the upper disc. Both slides pass through the upper disc and the lower disc and are fixedly connected. Both slides are slidably connected to the upper disc.

[0014] The symmetrically arranged slides effectively prevent the upper disc from tipping over to one side when sliding along the slides when the telescopic mechanism contracts or extends, thereby ensuring the stability of the placement of the in-situ monitoring sensor.

[0015] Furthermore, a retaining groove is provided on the slide plate, and the unhooking mechanism is inserted into the retaining groove.

[0016] When the in-situ monitoring sensor is locked, the upper disc is pulled up vertically to drive the unhooking mechanism to move up. When it moves to a certain height, the retaining groove blocks the unhooking mechanism from continuing to move up and applies a vertical downward force to the unhooking mechanism, causing the unhooking mechanism to operate and thereby lock the in-situ monitoring sensor. When the in-situ monitoring sensor is unhooked, the upper disc slides down vertically along the slide under the action of gravity, and the unhooking mechanism slides down. When it slides down to a certain depth, the retaining groove blocks the unhooking mechanism from continuing to slide down and applies a vertical upward force to the unhooking mechanism, causing the unhooking mechanism to operate and thereby release the lock on the in-situ monitoring sensor. The slide can be telescopically adjusted to change the distance between the retaining groove and the unhooking mechanism, thereby regulating the deployment depth of the in-situ monitoring sensor.

[0017] Furthermore, the uncoupling mechanism includes a base, a handle and a reset spring. The base is located between the upper disc and the connecting block. The base and the upper disc are fixedly connected. One end of the handle is hinged to the base, and the other end of the handle is inserted into the retaining groove. An insert block is provided on the handle, and the insert block is inserted into the in-situ monitoring sensor. One end of the reset spring is fixedly connected to the base, and the other end of the reset spring is fixedly connected to the handle. The reset spring is arranged at an angle, and the end of the reset spring connected to the base is closer to the central axis of the upper disc than the other end.

[0018] When the in-situ monitoring sensor is locked, the upper disc is pulled up vertically, driving the unhooking mechanism to move up. When it moves up to a certain height, the retaining groove blocks the handle from continuing to move up and applies a vertical downward force to the handle, causing the handle to rotate and the plug to be inserted into the in-situ monitoring sensor, thereby locking the in-situ monitoring sensor; when the in-situ monitoring sensor is unhooked, the upper disc slides down vertically along the slide under the action of gravity, and the unhooking mechanism slides down. When it slides down to a certain depth, the retaining groove blocks the handle from continuing to slide down and applies a vertical upward force to the handle, causing the handle to rotate and the plug to be pulled out of the in-situ monitoring sensor, thereby releasing the lock of the in-situ monitoring sensor. The reset spring always provides a supporting force for the handle during the process of the in-situ monitoring sensor being locked, so that after the in-situ monitoring sensor reaches the predetermined locking position, the plug can be automatically inserted into the in-situ monitoring sensor under the action of the reset spring to complete the locking.

[0019] Furthermore, the weight mechanism includes a vertical slide rod and an auxiliary weight, the vertical slide rod and the connecting block are threadedly connected, the auxiliary weight is sleeved on the vertical slide rod, the auxiliary weight and the vertical slide rod are slidably connected, and a buckle is provided on the auxiliary weight.

[0020] A shoulder is provided at one end of the vertical slide bar. With the cooperation of the shoulder and the connecting block, the auxiliary weight is prevented from detaching from the vertical slide bar. When the deployment device is deployed, the rope is fixed on the buckle, which facilitates the deployment of the deployment device. When the monitored sediment is hard, it is convenient for the observer to lift or release the auxiliary weight by retracting and releasing the rope, and then hit the connecting block, thereby increasing the force of the in-situ monitoring sensor inserted into the bottom mud.

[0021] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention sets multiple sets of telescopic mechanisms to ensure that the upper disc always maintains vertical up and down sliding when sliding along the slide plate, thereby achieving accurate placement of the in-situ monitoring sensor in the sediment profile monitoring area; 2. The present invention utilizes the cooperation between the retaining groove and the handle. When the upper disc is pulled up vertically, the retaining groove prevents the handle from continuing to move upward after reaching a certain height, and applies a vertical downward force to the handle, causing the handle to rotate, and the insert block to be inserted into the in-situ monitoring sensor, thereby locking the in-situ monitoring sensor. When the upper disc slides down vertically along the slide plate under the action of gravity and reaches a certain depth, the retaining groove prevents the handle from continuing to slide downward, and applies a vertical upward force to the handle, causing the handle to rotate, and the insert block to be pulled out of the in-situ monitoring sensor, thereby releasing the lock of the in-situ monitoring sensor. The structure is simple, and there is no need to rely on electric or pneumatic systems to achieve automatic unhooking of the in-situ monitoring sensor. 3. The present invention is equipped with a heavy hammer mechanism, which can adapt to precise placement in environments with different water depths and different bottom mud hardnesses to meet different monitoring needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic structural diagram of the overall appearance of the present invention; Figure 2 A schematic diagram of a cross-sectional structure of the present invention; Figure 3 This is a structural diagram of another overall appearance of the present invention; Figure 4 It is a structural schematic diagram of the decoupling mechanism of the present invention; Figure 5 for Figure 2 A magnified schematic diagram of a local area A; Figure 6 for Figure 2 A magnified schematic diagram of local B.

[0023] In the figure: 1. Main body mechanism; 2. Telescopic mechanism; 3. Slide rail mechanism; 4. Unhooking mechanism; 5. Heavy hammer mechanism; 6. In-situ monitoring sensor; 11. Upper disc; 12. Lower disc; 13. Connecting block; 21. Upper connecting rod; 22. Lower connecting rod; 23. Fixed rod; 31. Slide plate; 32. Stop groove; 41. Base; 42. Handle; 43. Return spring; 44. Insert block; 51. Vertical slide bar; 52. Heavy hammer; 53. Buckle. DETAILED DESCRIPTION

[0024] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0025] Example: Figure 1 - Figure 6 As shown, the present invention provides a technical solution for an underwater precise placement device for in-situ monitoring sensors of a sediment profile: like Figure 1 and Figure 2As shown, the delivery device includes a main body mechanism 1, a telescopic mechanism 2, a slide rail mechanism 3, a decoupling mechanism 4, a weight mechanism 5 and an in-situ monitoring sensor 6. The telescopic mechanism 2 is arranged between the two ends of the main body mechanism 1, and the two ends of the telescopic mechanism 2 are respectively hinged to the two ends of the main body mechanism 1. The slide rail mechanism 3 passes through one end of the main body mechanism 1, and the slide rail mechanism 3 is fixedly connected to the other end of the main body mechanism 1. One end of the main body mechanism 1 is slidably connected to the slide rail mechanism 3. The decoupling mechanism 4 is located at one end of the main body mechanism 1, and the decoupling mechanism 4 is fixedly connected to one end of the main body mechanism 1. The decoupling mechanism 4 passes through the slide rail mechanism 3, and the weight mechanism 5 is threadedly connected to one end of the main body mechanism 1. The in-situ monitoring sensor 6 is inserted into one end of the main body mechanism 1 from the other end of the main body mechanism 1, the in-situ monitoring sensor 6 is slidably connected to the main body mechanism 1, and the in-situ monitoring sensor 6 is clamped to the decoupling mechanism 4.

[0026] When the present invention is used, the in-situ monitoring sensor 6 is inserted into the main body mechanism 1, and then the main body mechanism 1 is pulled vertically upward, the telescopic mechanism 2 is extended, and the main body mechanism 1 slides upward along the slide rail mechanism 3 until the slide rail mechanism 3 drives the unhooking mechanism 4 to move, and the unhooking mechanism 4 is inserted into the in-situ monitoring sensor 6 to engage the in-situ monitoring sensor 6. When the present invention is deployed, a rope is first used to vertically sink the deployment device as a whole to the upper part of the bottom mud. When the main body mechanism 1 touches the bottom and the in-situ monitoring sensor 6 is inserted into the bottom mud, under the action of gravity, the telescopic mechanism 2 begins to contract, and the upper end of the main body mechanism 1 descends along the slide rail mechanism 3. When it descends to the set depth, the slide rail mechanism 3 drives the unhooking mechanism 4 to move, and the unhooking mechanism 4 is pulled out from the in-situ monitoring sensor 6, completing the unlocking action, and then leaving the in-situ monitoring sensor 6 in the bottom mud; when the monitored sediment is hard, the weight mechanism 5 is pulled by the rope, and the weight mechanism 5 is released vertically to achieve impact on the main body mechanism 1, so that the in-situ monitoring sensor 6 is smoothly unhooked and accurately inserted into the bottom mud at a predetermined depth.

[0027] like Figure 1 As shown, the main mechanism 1 includes an upper disc 11 and a lower disc 12, and the upper disc 11 and the lower disc 12 are located at both ends of the telescopic mechanism 2, the upper disc 11 and one end of the telescopic mechanism 2 are hinged, and the lower disc 12 and the other end of the telescopic mechanism 2 are hinged, one end of the slide rail mechanism 3 passes through the upper disc 11, one end of the slide rail mechanism 3 is slidingly connected to the upper disc 11, and the other end of the slide rail mechanism 3 is fixedly connected to the lower disc 12, the upper disc 11 is fixedly connected to the decoupling mechanism 4, the upper disc 11 and the weight mechanism 5 are threadedly connected, and holes are provided on the upper disc 11 and the lower disc 12, and the in-situ monitoring sensor 6 passes through the holes on the upper disc 11 and the lower disc 12, and the in-situ monitoring sensor 6 is slidingly connected to the upper disc 11 and the lower disc 12.

[0028] A plurality of through holes are provided on the upper disc 11 and the lower disc 12, and the through holes are symmetrically arranged about the central axis of the upper disc 11 and the lower disc 12, thereby reducing the resistance encountered by the delivery device during vertical delivery, and also reducing the pressure of the delivery device on the bottom mud surface, so that the delivery device can be placed stably on the bottom of the water, ensuring the accurate delivery of the in-situ monitoring sensor 6; the holes and grooves on the upper disc 11 and the lower disc 12 ensure that the in-situ monitoring sensor 6 will not shake during delivery, effectively improving the delivery accuracy of the in-situ monitoring sensor 6.

[0029] like Figure 1 and Figure 6 As shown, a connecting block 13 is provided on the upper disc 11 , the connecting block 13 is welded to the upper end surface of the upper disc 11 , and the connecting block 13 is threadedly connected to the weight mechanism 5 .

[0030] The connecting block 13 is located between the weight mechanism 5 and the decoupling mechanism 4, and plays the role of protecting the decoupling mechanism 4 and applying force to the in-situ monitoring sensor 6, and providing a striking surface for the weight mechanism 5. When the texture of the monitored sediment is relatively hard, the weight mechanism 5 can be released to strike the connecting block 13 to achieve smooth decoupling and precise placement of the in-situ monitoring sensor 6.

[0031] like Figure 2 As shown, the telescopic mechanism 2 includes an upper connecting rod 21, a lower connecting rod 22 and a fixed rod 23. There are two upper connecting rods 21 and two lower connecting rods 22. One end of an upper connecting rod 21 is hinged to the upper disc 11, and the other end of an upper connecting rod 21 is hinged to one end of the fixed rod 23. One end of another upper connecting rod 21 is hinged to the upper disc 11, and the other end of another upper connecting rod 21 is hinged to the other end of the fixed rod 23. One end of a lower connecting rod 22 is hinged to the lower disc 12, and the other end of a lower connecting rod 22 is hinged to one end of the fixed rod 23. One end of another lower connecting rod 22 is hinged to the lower disc 12, and the other end of another lower connecting rod 22 is hinged to the other end of the fixed rod 23. The two upper connecting rods 21, the two lower connecting rods 22 and the fixed rod 23 cooperate with the upper disc 11 and the lower disc 12 to form two rhombuses symmetrical about the fixed rod 23.

[0032] The telescopic mechanism 2 is provided with multiple groups. When the multiple groups of telescopic mechanisms 2 are telescoped, the upper disc 11 can slide vertically along the slide rail mechanism 3 relative to the lower disc 12. The diamond-shaped structural design improves the overall stability of the telescopic mechanism 2, so that the gravity generated by the upper disc 11 and the structure above the upper disc 11 is evenly distributed on the telescopic mechanism 2, ensuring the vertical placement of the in-situ monitoring sensor 6.

[0033] like Figure 2 and Figure 3As shown, the slide rail mechanism 3 is composed of two slides 31 , which are symmetrically arranged about the central axis of the upper disc 11 , and both slides 31 pass through the upper disc 11 and the lower disc 12 and are fixedly connected, and both slides 31 are slidably connected to the upper disc 11 .

[0034] The symmetrically arranged slides 31 effectively prevent the upper disc 11 from tipping over to one side when sliding along the slides 31 when the telescopic mechanism 2 contracts or extends, thereby ensuring the stability of the placement of the in-situ monitoring sensor 6.

[0035] like Figure 2 and Figure 3 As shown, a retaining groove 32 is provided on the slide plate 31 , and the unhooking mechanism 4 is inserted into the retaining groove 32 .

[0036] When the in-situ monitoring sensor 6 is locked, the upper disc 11 is pulled up vertically to drive the unhooking mechanism 4 to move up. When it moves up to a certain height, the retaining groove 32 blocks the unhooking mechanism 4 from continuing to move up and applies a vertical downward force to the unhooking mechanism 4, so that the unhooking mechanism 4 operates, thereby locking the in-situ monitoring sensor 6; when the in-situ monitoring sensor 6 is unhooked, the upper disc 11 slides down vertically along the slide plate 31 under the action of gravity, and the unhooking mechanism 4 slides down. When it slides down to a certain depth, the retaining groove 32 blocks the unhooking mechanism 4 from continuing to slide down and applies a vertical upward force to the unhooking mechanism 4, so that the unhooking mechanism 4 operates, thereby releasing the lock of the in-situ monitoring sensor 6, and the slide plate 31 can be telescopically adjusted to change the distance between the retaining groove 32 and the unhooking mechanism 4, thereby regulating the placement depth of the in-situ monitoring sensor 6.

[0037] like Figure 4 and Figure 5 As shown, the unhooking mechanism 4 includes a base 41, a handle 42 and a reset spring 43. The base 41 is located between the upper disc 11 and the connecting block 13. The base 41 is fixedly connected to the upper disc 11. One end of the handle 42 is hinged to the base 41, and the other end of the handle 42 is inserted into the retaining groove 32. An insert block 44 is provided on the handle 42, and the insert block 44 is inserted into the in-situ monitoring sensor 6. One end of the reset spring 43 is fixedly connected to the base 41, and the other end of the reset spring 43 is fixedly connected to the handle 42. The reset spring 43 is tilted, and the end of the reset spring 43 connected to the base 41 is closer to the central axis of the upper disc 11 than the other end.

[0038] When the in-situ monitoring sensor 6 is locked, the upper disc 11 is pulled up vertically, driving the unhooking mechanism 4 to move up. When it moves up to a certain height, the retaining groove 32 blocks the handle 42 from continuing to move up, and applies a vertical downward force to the handle 42, the handle 42 rotates, and the insert 44 is inserted into the in-situ monitoring sensor 6, thereby locking the in-situ monitoring sensor 6; when the in-situ monitoring sensor 6 is unhooked, the upper disc 11 slides down vertically along the slide plate 31 under the action of gravity, and the unhooking mechanism 4 slides down. When it slides down to a certain depth, the upper disc 11 slides down vertically along the slide plate 31 under the action of gravity, and the unhooking mechanism 4 slides down. When the in-situ monitoring sensor 6 is unlocked, the return spring 43 always provides a supporting force for the handle 42, so that after the in-situ monitoring sensor 6 reaches the predetermined locking position, the return spring 43 can automatically insert the block 44 into the in-situ monitoring sensor 6 under the action of the block 44 to complete the locking.

[0039] like Figure 3 and Figure 6 As shown, the weight mechanism 5 includes a vertical slide rod 51 and an auxiliary weight 52. The vertical slide rod 51 is threadedly connected to the connecting block 13. The auxiliary weight 52 is sleeved on the vertical slide rod 51. The auxiliary weight 52 and the vertical slide rod 51 are slidably connected. A buckle 53 is provided on the auxiliary weight 52.

[0040] A shoulder is provided at one end of the vertical slide bar 51. With the cooperation of the shoulder and the connecting block 13, the auxiliary weight 52 is prevented from detaching from the vertical slide bar 51. When the launching device is launched, the rope is fixed on the buckle 53, which facilitates the launching of the launching device. When the monitored sediment is hard, it is convenient for the observer to lift or release the auxiliary weight 52 by retracting and releasing the rope, and then hit the connecting block 13, thereby increasing the force of the in-situ monitoring sensor 6 inserted into the bottom mud.

[0041] The working principle of the present invention is as follows: when the present invention is used, the in-situ monitoring sensor 6 is inserted into the main body mechanism 1, and then the main body mechanism 1 is pulled vertically upward, the telescopic mechanism 2 is extended, and the main body mechanism 1 slides upward along the slide rail mechanism 3 until the slide rail mechanism 3 drives the unhooking mechanism 4 to move, and the unhooking mechanism 4 is inserted into the in-situ monitoring sensor 6 to engage the in-situ monitoring sensor 6. When the present invention is deployed, a rope is first used to vertically sink the deployment device as a whole to the upper part of the bottom mud. When the main body mechanism 1 touches the bottom and the in-situ monitoring sensor 6 is inserted into the bottom mud, under the action of gravity, the telescopic mechanism 2 begins to contract, and the upper end of the main body mechanism 1 descends along the slide rail mechanism 3. When it descends to the set depth, the slide rail mechanism 3 drives the unhooking mechanism 4 to move, and the unhooking mechanism 4 is pulled out from the in-situ monitoring sensor 6, completing the unlocking action, and then leaving the in-situ monitoring sensor 6 in the bottom mud; when the texture of the monitored sediment is hard, after the weight mechanism 5 is pulled by the rope, the weight mechanism 5 is released to achieve impact on the main body mechanism 1, so that the in-situ monitoring sensor 6 is smoothly unhooked and accurately inserted into the bottom mud.

[0042] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An underwater precision delivery device for in-situ monitoring sensors of sediment profiles, characterized by: The delivery device comprises a main body mechanism (1), a telescopic mechanism (2), a slide rail mechanism (3), a decoupling mechanism (4), a weight mechanism (5) and an in-situ monitoring sensor (6); the telescopic mechanism (2) is arranged between the two ends of the main body mechanism (1); the two ends of the telescopic mechanism (2) are respectively hinged to the two ends of the main body mechanism (1); the slide rail mechanism (3) passes through one end of the main body mechanism (1); the slide rail mechanism (3) is fixedly connected to the other end of the main body mechanism (1); one end of the main body mechanism (1) and the slide rail mechanism (3) slide The decoupling mechanism (4) is located at one end of the main body mechanism (1), the decoupling mechanism (4) and one end of the main body mechanism (1) are fixedly connected, the decoupling mechanism (4) passes through the slide rail mechanism (3), the weight mechanism (5) and one end of the main body mechanism (1) are threadedly connected, the in-situ monitoring sensor (6) is inserted into one end of the main body mechanism (1) from the other end of the main body mechanism (1), the in-situ monitoring sensor (6) and the main body mechanism (1) are slidably connected, and the in-situ monitoring sensor (6) and the decoupling mechanism (4) are snap-connected.

2. The underwater precise delivery device for in-situ monitoring sensors of a sediment profile according to claim 1, characterized in that: The main body mechanism (1) comprises an upper disc (11) and a lower disc (12), the upper disc (11) and the lower disc (12) being located at both ends of the telescopic mechanism (2), the upper disc (11) being hinged to one end of the telescopic mechanism (2), the lower disc (12) being hinged to the other end of the telescopic mechanism (2), one end of the slide rail mechanism (3) passing through the upper disc (11), one end of the slide rail mechanism (3) being slidably connected to the upper disc (11), and the slide rail mechanism The other end of the mechanism (3) is fixedly connected to the lower disc (12), the upper disc (11) is fixedly connected to the decoupling mechanism (4), the upper disc (11) is threadedly connected to the heavy hammer mechanism (5), the upper disc (11) and the lower disc (12) are both provided with holes and slots, the in-situ monitoring sensor (6) passes through the holes and slots on the upper disc (11) and the lower disc (12), and the in-situ monitoring sensor (6) is slidably connected to the upper disc (11) and the lower disc (12).

3. The underwater precise placement device for in-situ monitoring sensors of a sediment profile according to claim 2, characterized in that: A connecting block (13) is provided on the upper disc (11), the connecting block (13) and the upper end surface of the upper disc (11) are welded, and the connecting block (13) and the heavy hammer mechanism (5) are threadedly connected.

4. The underwater precise placement device for in-situ monitoring sensors of a sediment profile according to claim 3 is characterized by: The telescopic mechanism (2) comprises an upper connecting rod (21), a lower connecting rod (22) and a fixed rod (23), wherein two upper connecting rods (21) and two lower connecting rods (22) are provided, one end of the upper connecting rod (21) is hinged to the upper disc (11), the other end of the upper connecting rod (21) is hinged to one end of the fixed rod (23), another end of the upper connecting rod 21 is hinged to the upper disc (11), the other end of the upper connecting rod 21 is hinged to the other end of the fixed rod (23), and one end of the lower connecting rod 21 is hinged to the upper disc (11), the other end of the upper connecting rod 21 is hinged to the other end of the fixed rod (23), and one end of the lower connecting rod 21 is hinged to the upper disc (11). One end of the rod (22) is hinged to the lower disc (12), the other end of one of the lower connecting rods (22) is hinged to one end of the fixed rod (23), one end of another of the lower connecting rods (22) is hinged to the lower disc (12), the other end of another of the lower connecting rods (22) is hinged to the other end of the fixed rod (23), and the two upper connecting rods (21), the two lower connecting rods (22) and the fixed rod (23) cooperate with the upper disc (11) and the lower disc (12) to form two rhombuses symmetrical about the fixed rod (23).

5. The underwater precise placement device for in-situ monitoring sensors of a sediment profile according to claim 4 is characterized by: The slide rail mechanism (3) comprises two slide plates (31), the two slide plates (31) being symmetrically arranged about the central axis of the upper disc (11), the two slide plates (31) passing through the upper disc (11) and the lower disc (12) for fixed connection, and the two slide plates (31) being slidably connected to the upper disc (11).

6. The underwater precise placement device for in-situ monitoring sensors of a sediment profile according to claim 5, characterized in that: The slide plate (31) is provided with a retaining groove (32), and the decoupling mechanism (4) is inserted into the retaining groove (32).

7. The underwater precise placement device for in-situ monitoring sensors of a sediment profile according to claim 6, characterized in that: The decoupling mechanism (4) comprises a base (41), a handle (42) and a return spring (43), wherein the base (41) is located between the upper disc (11) and the connecting block (13), the base (41) and the upper disc (11) are fixedly connected, one end of the handle (42) is hinged to the base (41), the other end of the handle (42) is inserted into the retaining groove (32), an insert block (44) is provided on the handle (42), and the insert block (44) is inserted into the in-situ monitoring sensor (6), one end of the return spring (43) is fixedly connected to the base (41), the other end of the return spring (43) is fixedly connected to the handle (42), the return spring (43) is tilted, and the end of the return spring (43) connected to the base (41) is closer to the central axis of the upper disc (11) than the other end.

8. The underwater precise placement device for in-situ monitoring sensors of a sediment profile according to claim 7, characterized in that: The weight mechanism (5) comprises a vertical slide bar (51) and an auxiliary weight (52), wherein the vertical slide bar (51) and the connecting block (13) are threadedly connected, and the auxiliary weight (52) is sleeved on the vertical slide bar (51). The auxiliary weight (52) and the vertical slide bar (51) are slidably connected, and a buckle (53) is provided on the auxiliary weight (52).

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