In-situ measurement components and in-situ micro-profile measurement system for dissolved oxygen in marine sediments

Abstract

The present application discloses an in-situ measurement component and an in-situ micro-profile measurement system for dissolved oxygen in marine sediments, which belongs to the field of seabed detection technology, wherein the in-situ measurement component includes: a mounting frame; a protective cylinder, which is vertically fixed on the mounting frame; a protective cover plate, the side end of which is rotatably mounted on the lower end face of the protective cylinder, and is used to reset the protective cover plate to close the lower end face of the protective cylinder; an elastic reset member, which is arranged on the protective cover plate and the protective cylinder; a telescopic element, a mounting disk is fixed on the telescopic rod; a push rod, which is fixed on the mounting disk and has a first mechanical switch at the lower end; a microelectrode, which is fixed on the mounting disk, and the lower end of the microelectrode is not higher than the lower end of the push rod. The present application sets a protective cylinder and a protective cover plate to form a protective space for accommodating the microelectrode; sets a push rod to push the protective cover plate open and prevent the microelectrode from contacting the protective cover plate; sets a first mechanical switch at the lower end of the push rod to detect hard substances and effectively protect the microelectrode.

Description

Technical Field

[0001] The invention relates to the technical field of seabed detection, and in particular to an in-situ measurement component and an in-situ micro-profile measurement system for dissolved oxygen in marine sediments. Background Art

[0002] The detection of dissolved oxygen in marine sediments is usually carried out using microelectrodes in the laboratory after collecting samples. This method is relatively cumbersome, and the samples are easily affected by external factors during transportation. The actual measured data are different from the in-situ measured data.

[0003] If in-situ measurement is to be achieved, the microelectrode used to measure the dissolved oxygen information of the sediment can be installed in the equipment and sink to the seabed with the equipment during operation. However, because the microelectrode is thin and has a low structural strength, it is easy to collide with foreign objects during storage and deployment, causing damage. Summary of the invention

[0004] In view of the above problems, the present invention proposes an in-situ micro-profile measurement system for dissolved oxygen in marine sediments.

[0005] The technical solution adopted by the present invention is as follows:

[0006] An in-situ measurement assembly, comprising:

[0007] Mounting frame;

[0008] A protective cylinder, vertically fixed on the mounting frame;

[0009] A protective cover plate, the side end of which is rotatably mounted on the lower end surface of the protective tube, the protective cover plate is used to close or open the lower end surface of the protective tube, and the surface of the protective cover plate facing the inside of the protective tube has a strip-shaped avoidance groove, and the strip-shaped avoidance groove extends to the edge of the protective cover plate away from one end of the rotationally mating side of the protective cover plate and the protective tube;

[0010] An elastic reset member, arranged on the protective cover plate and the protective tube, and used to reset the protective cover plate to close the lower end surface of the protective tube;

[0011] A telescopic element is fixed on the mounting frame and is located directly above the mounting frame. A mounting plate is fixed on the telescopic rod of the telescopic element, and the mounting plate is located in the protective tube.

[0012] A push rod, the upper end of which is fixed on the mounting plate, and the lower end of which is provided with a first mechanical switch, the first mechanical switch being used to cooperate with the avoidance groove, when the push rod moves downward, the first mechanical switch is embedded in the avoidance groove, and when the push rod drives the protective cover plate to rotate and open, the first mechanical switch moves along the length direction of the avoidance groove;

[0013] A microelectrode is used to detect parameter information of marine sediments. The upper end of the microelectrode is fixed on the mounting plate, and the lower end of the microelectrode is flush with or higher than the lower end of the push rod. When the telescopic rod of the telescopic element drives the mounting plate to move downward to open the protective cover, the microelectrode does not contact the protective cover.

[0014] By providing a protective tube and a protective cover, a protective space for accommodating the microelectrode can be formed, which effectively protects the microelectrode when the microelectrode is not working and prevents damage to the microelectrode caused by accidental collision during storage or placement; by providing a push rod, the protective cover can be pushed open by the push rod when measurement is required to prevent the microelectrode from contacting the protective cover, and the microelectrode can be inserted into the seabed sediment for detection after being moved downward; there may be hard substances in the seabed sediment, and the microelectrode will be damaged when inserted. The present application can detect the hard substance by providing a first mechanical switch at the lower end of the push rod. When the first mechanical switch contacts the hard substance, it will be triggered, and the telescopic element will be controlled to stop working, thereby effectively protecting the microelectrode; the first mechanical switch can be avoided by the strip avoidance groove to prevent the first mechanical switch from being accidentally triggered when the push rod pushes the protective cover.

[0015] In actual use, the telescopic element can be a linear drive mechanism such as an electric push rod. In actual use, the elastic reset member is preferably a torsion spring, the protective cover plate and the protective tube are rotated and matched through the rotating shaft, and the torsion spring is sleeved on the rotating shaft, one end of which is matched with the protective cover plate, and the other end is matched with the protective tube.

[0016] In actual application, there can be one or more microelectrodes.

[0017] In one embodiment of the present invention, the push rod is located on a side close to the rotational fit between the protective cover plate and the protective tube, and the microelectrode is located on a side away from the rotational fit between the protective cover plate and the protective tube.

[0018] When the lower end of the microelectrode is flush with the lower end of the push rod, the lower end of the microelectrode is directly above the avoidance groove, and when the push rod drives the protective cover to rotate and open, the lower end of the microelectrode moves along the length direction of the avoidance groove.

[0019] In one embodiment of the present invention, the upper portion of the mounting plate has a conical portion, and the lower end size of the conical portion is larger than the upper end size of the conical portion. When the telescopic rod of the telescopic element is extended to the maximum distance, the mounting plate extends out of the protective tube, and the edge of the protective cover plate contacts the conical portion.

[0020] The tapered portion facilitates the installation plate to smoothly enter the protective tube when the telescopic rod of the telescopic element is retracted and reset after being extended to the maximum distance.

[0021] If the tapered portion is not provided, when the edge of the protective cover is at the connection between the telescopic rod and the mounting plate, the mounting plate cannot normally retract the protective tube, that is, in order to avoid the above situation, the mounting plate cannot move down too far. The present application can move down a longer distance by providing the tapered portion.

[0022] In one embodiment of the present invention, the edge of the surface of the protective cover plate facing the interior of the protective tube is rounded or chamfered.

[0023] In one embodiment of the present invention, the mounting frame has an inclined mounting surface, a camera and a light emitting element are mounted on the inclined mounting surface, and the inclined mounting surface is used to make the camera and the light emitting element face the lower end of the protective tube.

[0024] The camera can record the measurement process of the microelectrode, which is convenient for detailed analysis based on the microelectrode data after subsequent recovery.

[0025] The present application also discloses an in-situ micro-profile measurement system for dissolved oxygen in marine sediments, comprising:

[0026] A frame, wherein the frame has a plurality of supporting legs;

[0027] An in-situ measurement assembly, wherein the in-situ measurement assembly is the in-situ measurement assembly described above, wherein the first end of the mounting frame is rotatably mounted on one of the supporting legs, the protective tube is located at the second end of the mounting frame, and the microelectrode is used to detect dissolved oxygen in marine sediments;

[0028] The driving mechanism is used to drive the mounting frame to rotate, so that the second end of the mounting frame can be moved away from the frame.

[0029] The mounting frame can be driven to rotate by the driving mechanism, so that the position of the microelectrode can be changed, that is, the microelectrode can measure the seabed sediments in different areas.

[0030] In one embodiment of the present invention, the driving mechanism comprises:

[0031] A first transmission wheel, fixed to a first end of the mounting frame;

[0032] A driving motor assembly is fixed on the frame, and a second transmission wheel is fixed on the output shaft of the driving motor assembly;

[0033] The transmission belt is wound around the first transmission wheel and the second transmission wheel.

[0034] The transmission belt in the present application is a general term and can be a belt or a chain, in which case the transmission wheel is a sprocket.

[0035] In one embodiment of the present invention, the frame is provided with an elastic buckle, and a positioning column is fixed on the mounting frame, and the positioning column is used to be clamped on the elastic buckle.

[0036] In the initial state, the positioning column is clamped on the elastic buckle, which can limit the in-situ measurement component.

[0037] In one embodiment of the present invention, it further comprises a first buoy mechanism, a second buoy mechanism and a launching rope connected to the frame at the lower end;

[0038] The number of the supporting feet is greater than or equal to three, and a second mechanical switch is provided at the bottom of each supporting foot;

[0039] The first buoy mechanism and the second buoy mechanism both include:

[0040] The locking and unlocking assembly comprises a sleeve rod capable of telescopic movement, wherein the sleeve rod has a locking working position and an unlocking working position;

[0041] A ring, which is placed on the casting rope;

[0042] A buoyancy ball connected to the collar;

[0043] A connecting rope, one end of which is connected to the sleeve ring or the buoyancy ball, and the other end of which is sleeved on the sleeve rod of the locking and unlocking assembly. When the sleeve rod is in the locking working position, the connecting rope cannot be separated from the sleeve rod, and when the sleeve rod is in the unlocking working position, the connecting rope can be separated from the sleeve rod;

[0044] The ring of the first buoy mechanism is located above the ring of the second buoy mechanism; when any one of the second mechanical switches is triggered to contact the seabed, the locking and unlocking assembly of the first buoy mechanism works, the rod is switched to unlocking work, and the buoyancy ball of the first buoy mechanism drives the corresponding ring to float; when all the second mechanical switches are triggered to contact the seabed, the locking and unlocking assembly of the second buoy mechanism works, the rod is switched to unlocking work, and the buoyancy ball of the second buoy mechanism drives the corresponding ring to float.

[0045] The rack may land abnormally when it is deployed. When the buoyancy ball of the first buoy mechanism and the buoyancy ball of the second buoy mechanism are seen to move up to the sea surface, it proves that the multiple support legs of the rack have reliably landed on the seabed. When the buoyancy ball of the first buoy mechanism is seen to move up to the sea surface after deployment, but the buoyancy ball of the second buoy mechanism has not moved up to the sea surface, it proves that the rack has landed on the seabed, but the landing is abnormal, and not every support leg can reliably contact the seabed. At this time, the deployment rope can be pulled up a distance, and then the position can be moved for a second deployment until the buoyancy ball of the second buoy mechanism is seen to move up to the sea surface. The present application can provide a correct deployment success rate and improve work efficiency through the provision of the first buoy mechanism and the second buoy mechanism.

[0046] In one embodiment of the present invention, the frame has a socket, and the locking and unlocking assembly includes:

[0047] A locking frame, fixed on the frame, the locking frame having a through hole corresponding to the insertion hole;

[0048] A telescopic motor is fixed on the frame, and is used to drive the sleeve rod to move. The sleeve rod passes through the through hole. When the sleeve rod is in the locking working position, the sleeve rod extends into the insertion hole. When the sleeve rod is in the unlocking working position, the sleeve rod is disengaged from the insertion hole.

[0049] The beneficial effects of the present invention are as follows: a protective space for accommodating microelectrodes can be formed by arranging a protective tube and a protective cover plate, which effectively protects the microelectrode when the microelectrode is not working, and prevents damage to the microelectrode caused by accidental collision during storage or placement; a push rod is arranged so that when measurement is required, the protective cover plate can be pushed open by the push rod to prevent the microelectrode from contacting the protective cover plate, and the microelectrode can be inserted into the seabed sediment for detection after being moved downward; there may be hard substances in the seabed sediment, and the microelectrode will be damaged when inserted. The present application can detect the hard substances by arranging a first mechanical switch at the lower end of the push rod, and the first mechanical switch will be triggered when it contacts the hard substances, and the telescopic element is controlled to stop working, thereby effectively protecting the microelectrode; the first mechanical switch can be avoided by the strip avoidance groove to prevent the first mechanical switch from being accidentally triggered when the push rod pushes open the protective cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 is a schematic diagram of the in-situ micro-profile measurement system for dissolved oxygen in marine sediments;

[0051] Figure 2 is a schematic diagram of the in-situ micro-profile measurement system of dissolved oxygen in marine sediments when the protective cover is closed;

[0052] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0053] Figure 4 It is a top view of the in-situ measurement assembly when the protective cover is closed;

[0054] Figure 5 yes Figure 4 Middle AA section view;

[0055] Figure 6 is a schematic diagram of the in-situ micro-profile measurement system for dissolved oxygen in marine sediments when the protective cover is half-open;

[0056] Figure 7 yes Figure 6 The enlarged view of point B in the middle;

[0057] Figure 8 It is a top view of the in-situ measurement assembly when the protective cover is half-open;

[0058] Fig. 9 yes Figure 8 Middle BB section view;

[0059] Fig.10 is a schematic diagram of the in-situ micro-profile measurement system for dissolved oxygen in marine sediments when the protective cover is fully opened;

[0060] Fig.11 yes Fig.10 Enlarged view of point C in the middle;

[0061] Fig.12 It is a top view of the in-situ measurement assembly when the protective cover is fully opened;

[0062] Fig.13 yes Fig.12 Middle CC section view;

[0063] Fig.14 It is a schematic diagram after the driving mechanism drives the mounting frame to rotate outward;

[0064] Fig.15 This is a schematic diagram of the in-situ micro-profile measurement system of dissolved oxygen in marine sediments from another angle;

[0065] Fig.16 yes Fig.15 The enlarged view of point D in the middle;

[0066] Fig.17 It is a schematic diagram of the buoyancy ball of the first buoy mechanism driving the corresponding ring to float upward;

[0067] Fig.18 yes Fig.17 Enlarged view of point E in the middle;

[0068] Fig.19 It is a schematic diagram when the first buoy mechanism and the buoyancy ball of the first buoy mechanism both float up.

[0069] The reference numerals in the figures are:

[0070] 1. Frame; 11. Supporting foot; 111. Second mechanical switch; 12. Driving mechanism; 121. First transmission wheel; 122. Driving motor assembly; 123. Second transmission wheel; 124. Driving belt; 13. Elastic buckle; 14a. First buoy mechanism; 14b. Second buoy mechanism; 141. Locking and unlocking assembly; 1411. Sleeve rod; 1412. Locking frame; 14121. Through hole; 1413. Telescopic motor; 142. Sleeve ring; 143. Buoyancy ball; 144. Connecting rope ; 15. Casting rope; 16. Socket; 2. In-situ measurement component; 21. Mounting frame; 21a. First end of the mounting frame; 21b. Second end of the mounting frame; 22. Protective tube; 23. Protective cover; 231. Strip avoidance groove; 24. Telescopic element; 241. Telescopic rod; 242. Mounting plate; 2421. Conical portion; 25. Push rod; 251. First mechanical switch; 26. Microelectrode; 27. Inclined mounting surface; 271. Camera; 272. Light-emitting element; 28. Positioning column. DETAILED DESCRIPTION

[0071] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0072] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0073] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0074] The present invention is described in detail below in conjunction with the accompanying drawings.

[0075] like Figure 1 to Figure 19As shown, this embodiment discloses an in-situ micro-profile measurement system for dissolved oxygen in marine sediments, comprising a frame 1 and an in-situ measurement component 2 installed on the frame 1;

[0076] like Fig.11 and Fig.13 As shown, the in-situ measurement component 2 of this embodiment includes:

[0077] Mounting frame 21;

[0078] The protective tube 22 is vertically fixed on the mounting frame 21;

[0079] The protective cover plate 23 is rotatably mounted at the side end on the lower end surface of the protective tube 22. The protective cover plate 23 is used to close or open the lower end surface of the protective tube 22. The surface of the protective cover plate 23 facing the inside of the protective tube 22 has a strip-shaped avoidance groove 231. The strip-shaped avoidance groove 231 extends away from one end of the protective cover plate 23 and the protective tube 22, which rotates to fit the protective tube 22, to the edge of the protective cover plate 23.

[0080] An elastic reset member (omitted and not shown in the figure) is provided on the protective cover plate 23 and the protective cylinder 22, and is used to reset the protective cover plate 23 to close the lower end surface of the protective cylinder 22;

[0081] The telescopic element 24 is fixed on the mounting frame 21 and is located directly above the mounting frame 21. A mounting plate 242 is fixed on the telescopic rod 241 of the telescopic element 24. The mounting plate 242 is located in the protective tube 22.

[0082] The top rod 25 is fixed on the mounting plate 242 at its upper end, and is provided with a first mechanical switch 251 at its lower end. The first mechanical switch 251 is used to cooperate with the avoidance groove. When the top rod 25 moves downward, the first mechanical switch 251 is embedded in the avoidance groove. When the top rod 25 drives the protective cover plate 23 to rotate and open, the first mechanical switch 251 moves along the length direction of the avoidance groove.

[0083] The microelectrode 26 is used to detect parameter information of marine sediments. The upper end of the microelectrode 26 is fixed on the mounting plate 242, and the lower end of the microelectrode 26 is flush with or higher than the lower end of the top rod 25. When the telescopic rod 241 of the telescopic element 24 drives the mounting plate 242 to move down and open the protective cover 23, the microelectrode 26 does not contact the protective cover 23.

[0084] By providing the protective tube 22 and the protective cover 23, a protective space for accommodating the microelectrode 26 can be formed, which effectively protects the microelectrode 26 when the microelectrode 26 is not working, and prevents the microelectrode 26 from being damaged by accidental collision during storage or placement; the push rod 25 is provided so that when measurement is required, the protective cover 23 can be pushed open by the push rod 25 to prevent the microelectrode 26 from contacting the protective cover 23. After the microelectrode 26 is moved downward, it can be inserted into the seabed sediment for detection; there may be hard substances in the seabed sediment, and the microelectrode 26 will be damaged when inserted. The present application can detect the hard substances by providing a first mechanical switch 251 at the lower end of the push rod 25. When the first mechanical switch 251 contacts the hard substances, it will be triggered. At this time, the telescopic element 24 is controlled to stop working, thereby effectively protecting the microelectrode 26; the first mechanical switch 251 can be avoided by the strip avoidance groove 231 to prevent the first mechanical switch 251 from being accidentally triggered when the push rod 25 pushes the protective cover 23 open.

[0085] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, at this time, the telescopic rod 241 of the telescopic element 24 is in a retracted state, and the protective cover 23 is closed; Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, at this time, the telescopic rod 241 of the telescopic element 24 is extended, and the protective cover 23 is in a semi-open state; Fig.10 , Fig.11 , Fig.12 and Fig.13 As shown, at this time, the telescopic rod 241 of the telescopic element 24 is extended to the maximum distance.

[0086] In actual use, the telescopic element 24 can be a linear drive mechanism 12 such as an electric push rod. In actual use, the elastic reset member is preferably a torsion spring, and the protective cover plate 23 and the protective tube 22 are rotatably matched through the rotating shaft. The torsion spring is sleeved on the rotating shaft, one end of which is matched with the protective cover plate 23, and the other end is matched with the protective tube 22.

[0087] In actual use, there may be one or more microelectrodes 26 .

[0088] like Fig.11 As shown, in this embodiment, the push rod 25 is located near the side where the protective cover plate 23 and the protective tube 22 rotate together, and the microelectrode 26 is located away from the side where the protective cover plate 23 and the protective tube 22 rotate together. When the lower end of the microelectrode 26 is flush with the lower end of the push rod 25, the lower end of the microelectrode 26 is directly above the avoidance groove, and when the push rod 25 drives the protective cover plate 23 to rotate and open, the lower end of the microelectrode 26 moves along the length direction of the avoidance groove.

[0089] like Fig.11 and Fig.12 As shown, in this embodiment, the upper part of the mounting plate 242 has a conical portion 2421, and the lower end size of the conical portion 2421 is larger than the upper end size of the conical portion 2421. When the telescopic rod 241 of the telescopic element 24 is extended to the maximum distance, the mounting plate 242 extends out of the protective tube 22, and the edge of the protective cover plate 23 contacts the conical portion 2421.

[0090] The conical portion 2421 facilitates the installation disk 242 to smoothly enter the protective tube 22 when the telescopic rod 241 of the telescopic element 24 is retracted and reset after being extended to the maximum distance. If the conical portion 2421 is not provided, when the edge of the protective cover plate 23 is at the connection between the telescopic rod 241 and the installation disk 242, the installation disk 242 cannot normally retract the protective tube 22, that is, in order to avoid the above situation, the installation disk 242 cannot move down too far. The present application can move down a longer distance by providing the conical portion 2421.

[0091] In this embodiment, the edge of the surface of the protection cover plate 23 facing the inside of the protection tube 22 is rounded or chamfered.

[0092] like Figure 2 and Figure 3 As shown, in this embodiment, the mounting frame 21 has an inclined mounting surface 27 , on which a camera 271 and a light emitting element 272 are mounted. The inclined mounting surface 27 is used to make the camera 271 and the light emitting element 272 face the lower end of the protective tube 22 .

[0093] The camera 271 can record the measurement process of the microelectrode 26, so as to facilitate the subsequent detailed analysis of the data of the microelectrode 26 after recovery.

[0094] like Figure 1 and Figure 2 As shown, the in-situ micro-profile measurement system for dissolved oxygen in marine sediments of this embodiment also includes a driving mechanism 12; the frame 1 has a plurality of supporting legs 11; the first end 21a of the mounting frame of the in-situ measurement component 2 is rotatably mounted on one of the supporting legs 11, the protective tube 22 is located at the second end 21b of the mounting frame, and the microelectrode 26 is used to detect dissolved oxygen in marine sediments;

[0095] The driving mechanism 12 is used to drive the mounting frame 21 to rotate, so that the second end 21 b of the mounting frame is away from the frame 1 .

[0096] The mounting frame 21 can be driven to rotate by the driving mechanism 12, so that the position of the microelectrode 26 can be changed, that is, the microelectrode 26 can measure the seabed sediments in different areas.

[0097] like Figure 1 and Figure 2As shown, in this embodiment, the driving mechanism 12 includes:

[0098] A first transmission wheel 121, fixed to the first end 21a of the mounting frame;

[0099] The driving motor assembly 122 is fixed on the frame 1, and a second transmission wheel 123 is fixed on the output shaft of the driving motor assembly 122;

[0100] The transmission belt 124 is wound around the first transmission wheel 121 and the second transmission wheel 123 .

[0101] The transmission belt 124 of the present application is a general term and can be a belt or a chain, in which case the transmission wheel is a sprocket.

[0102] like Figure 1 and Fig.14 As shown, in this embodiment, the frame 1 has an elastic buckle 13, and the mounting frame 21 is fixed with a positioning column 28, which is used to be clamped on the elastic buckle 13. In the initial state, the positioning column 28 is clamped on the elastic buckle 13, which can limit the in-situ measurement component 2.

[0103] like Fig.15 As shown, in this embodiment, it also includes a first buoy mechanism 14a, a second buoy mechanism 14b and a launching rope 15 connected to the frame 1 at the lower end;

[0104] like Figure 2 As shown, the number of the supporting feet 11 is greater than or equal to three, and a second mechanical switch 111 is disposed at the bottom of each supporting foot 11;

[0105] like Fig.15 , Fig.17 and Fig.19 As shown, the first buoy mechanism 14a and the second buoy mechanism 14b each include:

[0106] The locking and unlocking assembly 141 has a sleeve rod 1411 that can be telescopically moved, and the sleeve rod 1411 has a locking working position and an unlocking working position;

[0107] A ring 142, which is placed on the casting rope 15;

[0108] The buoyancy ball 143 is connected to the collar 142;

[0109] A connecting rope 144, one end of which is connected to the ring 142 or the buoyancy ball 143, and the other end of which is sleeved on the sleeve rod 1411 of the locking and unlocking assembly 141. When the sleeve rod 1411 is in the locking working position, the connecting rope 144 cannot be separated from the sleeve rod 1411, and when the sleeve rod 1411 is in the unlocking working position, the connecting rope 144 can be separated from the sleeve rod 1411;

[0110] The collar 142 of the first buoy mechanism 14a is located above the collar 142 of the second buoy mechanism 14b; when any one of the second mechanical switches 111 contacts the seabed and is triggered, the locking and unlocking assembly 141 of the first buoy mechanism 14a works, the sleeve rod 1411 switches to unlocking, and the buoyancy ball 143 of the first buoy mechanism 14a drives the corresponding collar 142 to float up. Fig.17 When all the second mechanical switches 111 are in contact with the seabed and triggered, the locking and unlocking assembly 141 of the second buoy mechanism 14b works, the sleeve rod 1411 switches to unlocking work, and the buoyancy ball 143 of the second buoy mechanism 14b drives the corresponding sleeve ring 142 to float up, see Fig.19 .

[0111] The rack 1 may land abnormally when it is deployed. When the buoyancy ball 143 of the first buoy mechanism 14a and the buoyancy ball 143 of the second buoy mechanism 14b are seen to move up to the sea surface, it proves that the multiple support legs 11 of the rack 1 have reliably landed on the seabed; when the buoyancy ball 143 of the first buoy mechanism 14a is seen to move up to the sea surface after deployment, but the buoyancy ball 143 of the second buoy mechanism 14b has not moved up to the sea surface, it proves that the rack 1 has landed on the seabed, but the landing is abnormal, and not every support leg 11 can reliably contact the seabed. At this time, the deployment rope 15 can be pulled up a distance, and then moved to a second deployment until the buoyancy ball 143 of the second buoy mechanism 14b is seen to move up to the sea surface. The present application can provide a success rate of correct deployment and improve work efficiency through the setting of the first buoy mechanism 14a and the second buoy mechanism 14b.

[0112] like Fig.16 and Fig.18 As shown, in this embodiment, the frame 1 has a socket 16, and the locking and unlocking assembly 141 includes:

[0113] A locking frame 1412 is fixed on the frame 1, and has a through hole 14121 corresponding to the insertion hole 16;

[0114] The telescopic motor 1413 is fixed on the frame 1. The telescopic motor 1413 is used to drive the sleeve rod 1411 to move. The sleeve rod 1411 passes through the through hole 14121. When the sleeve rod 1411 is in the locking working position, the sleeve rod 1411 extends into the socket 16. When the sleeve rod 1411 is in the unlocking working position, the sleeve rod 1411 disengages from the socket 16.

[0115] The above description is only a preferred embodiment of the present invention, and does not limit the patent protection scope of the present invention. Any equivalent structural transformation made by using the contents of the present invention and the drawings, directly or indirectly used in other related technical fields, is also included in the protection scope of the present invention.

Claims

1. An in-situ measurement component, characterized in that: include: Mounting frame; A protective cylinder, vertically fixed on the mounting frame; A protective cover plate, the side end of which is rotatably mounted on the lower end surface of the protective tube, the protective cover plate is used to close or open the lower end surface of the protective tube, and the surface of the protective cover plate facing the inside of the protective tube has a strip-shaped avoidance groove, and the strip-shaped avoidance groove extends to the edge of the protective cover plate away from one end of the rotationally mating side of the protective cover plate and the protective tube; An elastic reset member, provided on the protective cover plate and the protective tube, for resetting the protective cover plate to close the lower end surface of the protective tube; A telescopic element is fixed on the mounting frame and is located directly above the mounting frame. A mounting plate is fixed on the telescopic rod of the telescopic element, and the mounting plate is located in the protective tube. A push rod, the upper end of which is fixed on the mounting plate, and the lower end of which is provided with a first mechanical switch, the first mechanical switch being used to cooperate with the avoidance groove. When the push rod moves downward, the first mechanical switch is embedded in the avoidance groove. When the push rod drives the protective cover plate to rotate and open, the first mechanical switch moves along the length direction of the avoidance groove. When the first mechanical switch contacts a hard substance, it will be triggered, and at this time, the telescopic element is controlled to stop working. A microelectrode is used to detect parameter information of marine sediments. The upper end of the microelectrode is fixed on the mounting plate, and the lower end of the microelectrode is flush with or higher than the lower end of the push rod. When the telescopic rod of the telescopic element drives the mounting plate to move downward to open the protective cover, the microelectrode does not contact the protective cover.

2. The in-situ measurement assembly according to claim 1, characterized in that: The push rod is located at a side close to the rotational fit of the protective cover plate and the protective tube, and the microelectrode is located at a side away from the rotational fit of the protective cover plate and the protective tube.

3. The in-situ measurement assembly according to claim 1, characterized in that: The upper part of the mounting plate has a tapered portion, and the lower end size of the tapered portion is larger than the upper end size of the tapered portion. When the telescopic rod of the telescopic element is extended to the maximum distance, the mounting plate extends out of the protective tube, and the edge of the protective cover plate contacts the tapered portion.

4. The in-situ measurement assembly according to claim 3, characterized in that: The edge of the surface of the protective cover plate facing the interior of the protective cylinder is rounded or chamfered.

5. The in-situ measurement assembly according to claim 1, characterized in that: The mounting frame is provided with an inclined mounting surface, on which a camera and a light emitting element are mounted, and the inclined mounting surface is used to make the camera and the light emitting element face toward the lower end of the protective tube.

6. An in-situ micro-profile measurement system for dissolved oxygen in marine sediments, characterized in that: include: A frame, wherein the frame has a plurality of supporting legs; An in-situ measurement component, wherein the in-situ measurement component is the in-situ measurement component according to any one of claims 1 to 5, wherein the first end of the mounting frame is rotatably mounted on one of the supporting legs, the protective tube is located at the second end of the mounting frame, and the microelectrode is used to detect dissolved oxygen in marine sediments; The driving mechanism is used to drive the mounting frame to rotate, so that the second end of the mounting frame can be moved away from the frame.

7. The in-situ micro-profile measurement system for dissolved oxygen in marine sediments according to claim 6, characterized in that: The driving mechanism comprises: A first transmission wheel, fixed to a first end of the mounting frame; A driving motor assembly is fixed on the frame, and a second transmission wheel is fixed on the output shaft of the driving motor assembly; The transmission belt is wound around the first transmission wheel and the second transmission wheel.

8. The in-situ micro-profile measurement system for dissolved oxygen in marine sediments according to claim 6, characterized in that: The frame is provided with an elastic buckle, and a positioning column is fixed on the mounting frame. The positioning column is used for being clamped on the elastic buckle.

9. The marine sediment dissolved oxygen in-situ micro-profile measurement system according to claim 6, characterized in that: It also includes a first buoy mechanism, a second buoy mechanism, and a launching rope connected to the frame at the lower end; The number of the supporting feet is greater than or equal to three, and a second mechanical switch is provided at the bottom of each supporting foot; The first buoy mechanism and the second buoy mechanism both include: The locking and unlocking assembly comprises a sleeve rod capable of telescopic movement, wherein the sleeve rod has a locking working position and an unlocking working position; A ring, which is placed on the casting rope; A buoyancy ball connected to the sleeve ring; A connecting rope, one end of which is connected to the sleeve ring or the buoyancy ball, and the other end of which is sleeved on the sleeve rod of the locking and unlocking assembly. When the sleeve rod is in the locking working position, the connecting rope cannot be separated from the sleeve rod, and when the sleeve rod is in the unlocking working position, the connecting rope can be separated from the sleeve rod; The ring of the first buoy mechanism is located above the ring of the second buoy mechanism; when any one of the second mechanical switches is triggered to contact the seabed, the locking and unlocking assembly of the first buoy mechanism works, the rod is switched to unlocking work, and the buoyancy ball of the first buoy mechanism drives the corresponding ring to float; when all the second mechanical switches are triggered to contact the seabed, the locking and unlocking assembly of the second buoy mechanism works, the rod is switched to unlocking work, and the buoyancy ball of the second buoy mechanism drives the corresponding ring to float.

10. The marine sediment dissolved oxygen in-situ micro-profile measurement system according to claim 9, characterized in that: The frame is provided with a socket, and the locking and unlocking assembly comprises: A locking frame, fixed on the frame, the locking frame having a through hole corresponding to the insertion hole; A telescopic motor is fixed on the frame, and is used to drive the sleeve rod to move. The sleeve rod passes through the through hole. When the sleeve rod is in the locking working position, the sleeve rod extends into the insertion hole. When the sleeve rod is in the unlocking working position, the sleeve rod is disengaged from the insertion hole.

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