Multifunctional mud sampler and use method thereof

Abstract

The invention discloses a multifunctional mud sampler and a use method thereof. The multifunctional mud sampler comprises a left half mud sampling grab bucket, a right half mud sampling grab bucket, a first lifting handle, a second lifting handle, a lifting rope, a first pulling rope, a pulling rope switcher, a second pulling rope, a camera, an illuminating lamp, a temperature-salinity-depth instrument, a balancing weight, a water sampling module, an acoustic beacon and a battery. The pulling rope switcher can automatically complete switching of the second pulling rope and the first pulling rope at the water bottom, an operator only needs to put the mud sampler into the water bottom under the action of the pulling rope, the mud sampler is directly taken out from the water bottom through the pulling rope after mud sampling operation is completed, operation is easy, the situation that mud sampling fails due to human factors is reduced, and the mud sampling efficiency is improved. Various mud taking skills are not needed, so that the operation difficulty is reduced, and convenience and high efficiency are realized; a camera, an illuminating lamp, a temperature-salinity-depth instrument and an underwater acoustic beacon are arranged on the mud sampler, and multi-dimensional data support is provided for scientific research and environment monitoring work.

Description

Technical Field

[0001] The invention belongs to the technical field of underwater soil sampling, and in particular relates to a multifunctional soil sampler and a use method thereof. Background Art

[0002] In the fields of environmental monitoring and aquatic ecological research, it is often necessary to collect mud samples from the bottom of the water for analysis. The mud samplers currently on the market have relatively single functions and often cannot meet complex sampling needs. For example, some mud samplers are inconvenient to operate and have low collection efficiency; some mud samplers cannot obtain data such as bottom water temperature, depth, and mud sampling location; in addition, some mud samplers do not have the function of sampling bottom water. In short, current mud samplers cannot meet the diverse needs of bottom water sampling. Therefore, it is necessary to design a multifunctional mud sampler to solve such problems. Summary of the invention

[0003] The present invention provides a multifunctional mud sampler and a method for using the same. The mud sampler structure is designed to realize easy-to-operate mud and water collection functions. The camera, lighting, temperature-salinity-depth meter, hydroacoustic beacon and battery are reasonably arranged to realize diversified and accurate data collection needs, so as to solve the problems of existing mud samplers such as single function, inconvenient operation and low collection efficiency.

[0004] To solve the above problems, the technical solution provided by the present invention is as follows:

[0005] The embodiment of the present invention provides a multifunctional mud mining device, comprising a left half mud mining grab (11) and a right half mud mining grab (12) which are hinged to each other, the left half mud mining grab (11) is connected to a first lifting handle (14-1), the right half mud mining grab (12) is connected to a second lifting handle (14-2), the first lifting handle (14-1) is provided with a first top through hole (15-1) and a first bottom through hole (15-2) at both ends, and the second lifting handle (14-2) is provided with a second top through hole (15-1) and a first bottom through hole (15-2) at both ends. through hole (15-3) and a second bottom through hole (15-4); the first top through hole (15-1) and the second top through hole (15-3) are connected to two ends of a first traction rope (20), and the middle ring hole of the first traction rope (20) is connected to a pulling rope (10); the bottom of the pulling rope (10) is connected to a second traction rope (40) through a pulling rope switch, and the two ends of the second traction rope (40) are respectively connected to the first bottom through hole (15-2) and the second bottom through hole (15-4);

[0006] The left half mud mining grab (11) and the right half mud mining grab (12) are provided with air vents (102), instrument brackets (103), cameras (50), temperature-salinity-depth meters (60), counterweights (70), lighting lamps (80), water sampling modules (90), hydroacoustic beacons (110) and batteries (120); a plurality of air vents (102) are provided on the upper surfaces and side surfaces of the left half mud mining grab (11) and the right half mud mining grab (12); the air vents (102) are used to discharge water in the grab chamber when the grab is closed; a group of cameras (50) and a group of lighting lamps (80) are respectively installed on the counterweights (70) and the instrument brackets (103); the cameras (50) and the lighting lamps (80) are respectively used to photograph seabed conditions under different fields of view; the temperature-salinity-depth meter (60) and the hydroacoustic beacon (110) are used to collect seabed temperature, salinity, depth and sampling coordinate positions.

[0007] In an optional embodiment of the present invention, the pull rope switch includes a sleeve assembly (30) and a ring rod assembly (130) installed on the sleeve assembly (30).

[0008] According to an optional embodiment of the present invention, the sleeve assembly (30) comprises a sleeve (31), a spring (34) and a brake push rod (33); the brake push rod (33) is installed on both sides of the bottom of the sleeve (31), the spring (34) is sleeved on the axial surface of the brake push rod (33), and the brake push rod (33) is elastically connected to the sleeve (31) through the spring (34); there are rope threading holes (32) on both sides of the top of the sleeve (31), wherein the bottom end of the pulling rope (10) is tied to the rope threading holes (32) on both sides of the top of the sleeve (31).

[0009] According to an optional embodiment of the present invention, the eyelet rod assembly (130) comprises an eyelet rod (132), a float (134) and a float base (133); the float base (133) is fixedly connected to the eyelet rod (132), and the float (134) is sleeved on the eyelet rod (132); one end of the eyelet rod (132) is provided with an eyelet hole (131), and the other end is a hollow cone (135); the hollow cone (135) is retained in the sleeve (31), and the bottom of the hollow cone (135) is arranged to abut against the end of the brake push rod (33); wherein the middle ring hole of the second traction rope (40) is fixed on the eyelet hole (131).

[0010] In an optional embodiment of the present invention, the float (134) is made of a material with a density less than 1000 kg / m 3 Made of material.

[0011] In an optional embodiment of the present invention, the left half mud mining grab bucket (11) and the right half mud mining grab bucket (12) are two quarter hollow cylinders with the same structure and size.

[0012] In an optional embodiment of the present invention, the water sampling module (90) comprises a syringe (91) and an electric push rod (92), wherein the electric push rod (92) is installed at the end of the syringe (91) and can slide in the inner cavity of the syringe (91).

[0013] The embodiment of the present invention also provides a method for using the multifunctional mud sampler, comprising the following steps:

[0014] Step 1, first reset the pull rope switch, connect the sleeve assembly (30) and the ring rod assembly (130) together, and make the water sampling module (90) in the initial state, and the electric push rod (92) extends to the bottom of the syringe (91);

[0015] Step 2, then slowly lower the mud sampler to the bottom of the water by means of the lifting rope (10). During this process, due to the force applied to the lifting rope (10), the upper surface of the brake push rod (33) and the lower surface of the hollow truncated cone (135) have a large contact force, and the float (134) cannot radially push the brake push rod (33) open under the action of buoyancy; when the mud sampler touches the bottom, the lifting rope (10) relaxes and is no longer subjected to force. At this time, the upper surface of the brake push rod (33) and the lower surface of the hollow truncated cone (135) are only slightly in contact, and the float (134) will radially push the brake push rod (33) open under the action of buoyancy, causing the brake push rod (33) to lose its braking effect; since the second traction rope (40) is in a relaxed state, the left half mud grab (11) and the right half mud grab (11) are in a relaxed state. The bucket (12) will close naturally under the action of the counterweight (70), and at the same time, the water sampling module (90) will retract through the electric push rod (92) to suck the bottom water into the syringe (91), completing the water sampling operation. Furthermore, each instrument module on the mud sampler completes the corresponding data collection work; wherein, the counterweight (70) and the instrument bracket (103) are respectively equipped with a group of cameras (50) and lighting lamps (80), which are respectively used to photograph the seabed conditions under different fields of view; the temperature-salinity-depth meter (60) and the hydroacoustic beacon (110) are used to collect the seabed temperature, salinity, depth and sampling coordinate position; the air holes (102) on the upper surface and side of the left half mud grab (11) and the right half mud grab (12) are used to discharge the water in the grab cavity when the grab is closed;

[0016] Step 3, when all operations are completed, the mud sampler is lifted. At this time, the lifting rope (10) is tightened again. Since the brake push rod (33) loses its braking effect, the sleeve assembly (30) will be separated from the eye rod assembly (130). The second traction rope (40) no longer has a pulling force. Instead, the first traction rope (20) begins to be stressed. Under the pulling force of the first traction rope (20), the left half mud grab bucket (11) and the right half mud grab bucket (12) are tightly closed and lifted out of the water, completing the mud sampling operation.

[0017] Compared with the prior art, the embodiments of the present invention provide a multifunctional mud sampler and a method for using the same, which have the following beneficial effects: (1) In the multifunctional mud sampler provided by the present invention, the pull rope switch automatically switches between the second traction rope and the first traction rope at the bottom of the water. The operator only needs to put the mud sampler into the bottom of the water under the action of the pull rope. After the mud sampling operation is completed, the mud sampler can be directly taken out from the bottom of the water by the pull rope. The fool-proof operation reduces the occurrence of mud sampling failures caused by human factors, and does not require various mud sampling skills, thereby reducing the difficulty of operation, being convenient and efficient. (2) The mud sampler is equipped with a camera, a lighting lamp, a temperature-salinity-depth meter, and a hydroacoustic beacon, which provide multi-dimensional data support for scientific research and environmental monitoring. In addition, the water sampling module installed on the mud sampler realizes the function of performing mud sampling and water sampling operations on the same device at the same time. (3) The mud sampler is equipped with an independent battery, which can power various instrument modules on the mud sampler. All samples and data collection can be automatically completed at the bottom of the water without the need for additional manual operation, thereby improving work efficiency. (4) The mud sampler is also equipped with an empty instrument bracket, and modules can be added according to needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A three-dimensional schematic diagram of a multifunctional mud sampler provided in an embodiment of the present application - the mud grab bucket is in an open state.

[0020] Figure 2 A front view of a multifunctional mud sampler provided in an embodiment of the present application - the mud grab bucket is in the open state before collecting mud.

[0021] Figure 3 A front view of a multifunctional mud sampler provided in an embodiment of the present application - the mud grab bucket is in the closed state after collecting mud.

[0022] Figure 4A schematic structural diagram of a pull rope switch for a multifunctional mud sampler provided in an embodiment of the present application.

[0023] Figure 5 A schematic diagram of a mud grab bucket of a multifunctional mud sampler and a counterweight and battery installed thereon provided in an embodiment of the present application.

[0024] Figure 6 A schematic diagram of the lighting structure of a multifunctional mud sampler provided in an embodiment of the present application.

[0025] Figure 7 A schematic diagram of the camera structure of a multifunctional mud sampler provided in an embodiment of the present application.

[0026] Figure 8 A schematic diagram of the structure of a temperature-salinity-depth meter for a multifunctional mud sampler provided in an embodiment of the present application.

[0027] Fig. 9 A schematic diagram of the structure of an acoustic beacon of a multifunctional mud sampler provided in an embodiment of the present application.

[0028] Fig.10 A schematic diagram of the structure of a water sampling module of a multifunctional mud sampler provided in an embodiment of the present application.

[0029] Fig.11 A schematic diagram of the pulling rope structure of a multifunctional mud sampler provided in an embodiment of the present application.

[0030] Fig.12 A schematic diagram of the first traction rope structure of a multifunctional mud sampler provided in an embodiment of the present application.

[0031] Figure numerals: pulling rope 10, first traction rope 20, sleeve assembly 30, lifting ring rod assembly 130, second traction rope 40, camera 50, lighting lamp 80, temperature-salinity-depth meter 60, counterweight block 70, water sampling module 90, left half mud mining grab bucket 11, right half mud mining grab bucket 12, hydroacoustic beacon 110, battery 120, sleeve 31, spring 34, brake push rod 33, rope threading hole 32, lifting ring rod 132, float 134, float base 133, lifting ring hole 131, hollow truncated cone 135, instrument bracket 103, first pulling handle 14-1, second pulling handle 14-2, air vent 102, rotating shaft 101, syringe 91, electric push rod 92. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0033] like Figures 1 to 12 As shown, an embodiment of the present invention provides a multifunctional mud sampler, including a left half mud sampler grab 11, a right half mud sampler grab 12, a first pulling handle 14-1, a second pulling handle 14-2, a pulling rope 10, a first traction rope 20, a pull rope switch, a second traction rope 40, a camera 50, a lighting lamp 80, a temperature-salinity-depth meter 60, a counterweight 70, a water sampling module 90, a hydroacoustic beacon 110 and a battery 120. The tops of the left half mud sampler grab 11 and the right half mud sampler grab 12 are hinged to each other to form the mud sampler grab of the mud sampler.

[0034] like Figure 1 , Figure 2 and Figure 3 As shown, the left half mud grab 11 is connected to a first lifting handle 14-1, and the right half mud grab 12 is connected to a second lifting handle 14-2. The first lifting handle 14-1 is provided with a first top through hole 15-1 and a first bottom through hole 15-2 at both ends, and the second lifting handle 14-2 is provided with a second top through hole 15-3 and a second bottom through hole 15-4 at both ends. The first top through hole 15-1 and the second top through hole 15-3 are connected to both ends of the first traction rope 20, and the middle ring hole of the first traction rope 20 is connected to the lifting rope 10. The bottom of the lifting rope 10 is connected to the second traction rope 40 through a rope switch, and the two ends of the second traction rope 40 are connected to the first bottom through hole 15-2 and the second bottom through hole 15-4 respectively.

[0035] The left half mud grab 11 and the right half mud grab 12 are provided with a plurality of air holes 102, an instrument bracket 103, a camera 50, a temperature-salinity-depth meter 60, a counterweight 70, a lighting lamp 80, a water sampling module 90, a hydroacoustic beacon 110 and a battery 120. A plurality of air holes 102 are provided on the upper surface and side of the left half mud grab 11 and the right half mud grab 12; the air holes 102 are used to discharge the water in the grab cavity when the grab is closed. A group of cameras 50 and a group of lighting lamps 80 are respectively installed on the counterweight 70 and the instrument bracket 103, and the cameras 50 and the lighting lamps 80 are respectively used to photograph the seabed conditions under different fields of view. The temperature-salinity-depth meter 60 and the hydroacoustic beacon 110 are used to collect seabed temperature, salinity, depth and sampling coordinates.

[0036] like Figure 4As shown, the pull rope switch includes a sleeve assembly 30 and a ring rod assembly 130 coaxially mounted on the sleeve assembly 30. The sleeve assembly 30 includes a sleeve 31, a spring 34 and a brake push rod 33; the brake push rod 33 is installed on both sides of the bottom of the sleeve 31, the spring 34 is sleeved on the axial surface of the brake push rod 33, and the brake push rod 33 is elastically connected to the sleeve 31 through the spring 34; there are rope holes 32 on both sides of the top of the sleeve 31, wherein the pulling rope 10 passes through the middle ring hole of the first traction rope 20, and the bottom end of the pulling rope 10 is tied to the rope holes 32 on both sides of the top of the sleeve 31.

[0037] The eye rod assembly 130 includes an eye rod 132, a float 134 and a float base 133. The float base 133 is fixedly connected to the eye rod 132, and the float 134 is sleeved on the eye rod 132. The eye rod 132 is provided with an eye hole 131 at one end and a hollow truncated cone 135 at the other end. The hollow truncated cone 135 is clamped in the sleeve 31, and the bottom of the hollow truncated cone 135 is set against the end of the brake push rod 33. When the upper surface of the brake push rod 33 and the lower surface of the hollow truncated cone 135 have a large contact force, the float 134 cannot radially push the brake push rod 33 under the action of buoyancy. When the upper surface of the brake push rod 33 and the lower surface of the hollow truncated cone 135 are only slightly in contact, the float 134 will radially push the brake push rod 33 under the action of buoyancy. Among them, the middle ring hole of the second traction rope 40 is fixed on the eye hole 131. Preferably, the float base 133 is welded to the ring rod 132. The float 134 is made of a material with a density less than 1000 kg / m 3 Made of material.

[0038] Figure 5 Combination Figure 1 The left half mud grab bucket 11 and the right half mud grab bucket 12 are two quarter hollow cylinders with the same structure and size.

[0039] Figure 6 It is a schematic diagram of the structure of the lighting lamp 80. Figure 7 It is a schematic diagram of the structure of camera 50. Figure 8 This is a schematic diagram of the structure of the 60° temperature, salinity and depth instrument. Fig. 9 It is a schematic diagram of the structure of the hydroacoustic beacon 110. Fig.10 It is a schematic diagram of the structure of the water sampling module 90. Fig.11 It is a schematic diagram of the structure of the pulling rope 10. Fig.12 Schematic diagram of the structure of the first traction rope 20.

[0040] Preferably, if Fig.10 As shown, the water sampling module 90 includes a syringe 91 and an electric push rod 92, and the electric push rod 92 is installed at the end of the syringe 91. Figure 5As shown, the left half mud grab 11 and the right half mud grab 12 are hinged by a rotating shaft 101. The counterweight 70 is fixed to the left half mud grab 11 and the right half mud grab 12 by bolts, the purpose of which is to close the mud grab under the action of its gravity. The bottom end of the pulling rope 10 is tied to the sleeve 031, and then passes through the middle ring hole of the first traction rope 20. The two ends of the first traction rope 20 are tied to the ends of the first pulling handle and the second pulling handle. The mud grab is also equipped with a battery 120 and a water sampling module 90. The camera 50, the lighting lamp 80 and the hydroacoustic beacon 110 are installed on the instrument bracket 103 by bolts. The camera 50, the lighting lamp 80 and the temperature-salinity-depth meter 60 are installed on the counterweight 70 by bolts.

[0041] The embodiment of the present invention also provides a method for using the multifunctional mud sampler, comprising the following steps:

[0042] Step 1, first reset the pull rope switch, connect the sleeve assembly 30 and the ring rod assembly 130 together, and make the water sampling module 90 in the initial state, and the electric push rod 92 extends to the bottom of the syringe 91;

[0043] Step 2, then slowly lower the mud sampler to the bottom of the water by means of the lifting rope 10. During this process, due to the force on the lifting rope 10, the upper surface of the brake push rod 33 and the lower surface of the hollow truncated cone 135 have a large contact force, and the float 134 cannot radially push the brake push rod 33 open under the action of buoyancy; when the mud sampler touches the bottom, the lifting rope 10 relaxes and is no longer stressed. At this time, the upper surface of the brake push rod 33 and the lower surface of the hollow truncated cone 135 are only slightly in contact, and the float 134 will push the brake push rod 33 radially open under the action of buoyancy, causing the brake push rod 33 to lose its braking effect; since the second traction rope 40 is in a relaxed state, the left half mud grab 11 and the right half mud grab The bucket 12 will close naturally under the action of the counterweight 70, and at the same time, the water sampling module 90 will retract through the electric push rod 92 to suck the bottom water into the syringe 91 to complete the water sampling operation. Furthermore, each instrument module on the mud sampler completes the corresponding data collection work; wherein, a group of cameras 50 and lighting lamps 80 are respectively installed on the counterweight 70 and the instrument bracket 103, respectively, for photographing the seabed conditions under different fields of view; the temperature-salinity-depth meter 60 and the hydroacoustic beacon 110 are used to collect the seabed temperature, salinity, depth and sampling coordinate position; the air holes 102 on the upper surface and side of the left half mud grab 11 and the right half mud grab 12 are used to discharge the water in the grab cavity when the grab is closed;

[0044] Step 3, when all operations are completed, start to lift the mud sampler. At this time, the lifting rope 10 is tightened again. Since the brake push rod 33 loses its braking effect, the sleeve assembly 30 will be separated from the lifting ring rod assembly 130, and the second traction rope 40 will no longer have a pulling force. Instead, the first traction rope 20 begins to be stressed. Under the pulling force of the first traction rope 20, the mud sampler grab is tightly closed and lifted out of the water, completing the mud sampling operation.

[0045] The working process of a multifunctional mud sampler of this embodiment is as follows: first, the pull rope switch is reset, that is, the sleeve assembly 30 is connected to the ring rod assembly 130, and the water sampling module 90 is in the initial state, and the electric push rod 92 is extended to the bottom of the syringe 91. The mud sampler is slowly lowered to the bottom of the water by the pull rope 10, and each instrument module will automatically complete its own operation tasks, including mud sampling, water sampling and various data collection. After that, the mud sampler is lifted out of the water by the pull rope 10 to complete the mud sampling operation.

[0046] In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A multifunctional mud sampler, characterized in that: The invention comprises a left half mud grab (11) and a right half mud grab (12) which are hinged to each other, the left half mud grab (11) is connected to a first lifting handle (14-1), the right half mud grab (12) is connected to a second lifting handle (14-2), the first lifting handle (14-1) is provided with a first top through hole (15-1) and a first bottom through hole (15-2) at both ends, and the second lifting handle (14-2) is provided with a second top through hole (15-3) at both ends. and a second bottom through hole (15-4); the first top through hole (15-1) and the second top through hole (15-3) are connected to two ends of a first traction rope (20), and the middle ring hole of the first traction rope (20) is connected to a pulling rope (10); the bottom of the pulling rope (10) is connected to a second traction rope (40) through a pulling rope switch, and the two ends of the second traction rope (40) are respectively connected to the first bottom through hole (15-2) and the second bottom through hole (15-4); The left half mud mining grab (11) and the right half mud mining grab (12) are provided with air vents (102), instrument brackets (103), cameras (50), temperature-salinity-depth meters (60), counterweights (70), lighting lamps (80), water sampling modules (90), hydroacoustic beacons (110) and batteries (120); a plurality of air vents (102) are provided on the upper surfaces and side surfaces of the left half mud mining grab (11) and the right half mud mining grab (12); the air vents (102) are used to discharge water in the grab chamber when the grab is closed; a group of cameras (50) and a group of lighting lamps (80) are respectively installed on the counterweights (70) and the instrument brackets (103); the cameras (50) and the lighting lamps (80) are respectively used to photograph seabed conditions under different fields of view; the temperature-salinity-depth meter (60) and the hydroacoustic beacon (110) are used to collect seabed temperature, salinity, depth and sampling coordinate positions.

2. A multifunctional mud sampling device according to claim 1, characterized in that: The pull rope switch comprises a sleeve assembly (30) and a ring rod assembly (130) mounted on the sleeve assembly (30).

3. A multifunctional mud sampling device according to claim 2, characterized in that: The sleeve assembly (30) comprises a sleeve (31), a spring (34) and a brake push rod (33); the brake push rod (33) is installed on both sides of the bottom of the sleeve (31), the spring (34) is sleeved on the axial surface of the brake push rod (33), and the brake push rod (33) is elastically connected to the sleeve (31) through the spring (34); there are rope holes (32) on both sides of the top of the sleeve (31), wherein the bottom end of the pulling rope (10) is tied to the rope holes (32) on both sides of the top of the sleeve (31).

4. A multifunctional mud sampling device according to claim 3, characterized in that: The eyelet rod assembly (130) comprises an eyelet rod (132), a float (134) and a float base (133); the float base (133) is fixedly connected to the eyelet rod (132), and the float (134) is sleeved on the eyelet rod (132); one end of the eyelet rod (132) is provided with an eyelet hole (131), and the other end is a hollow cone (135); the hollow cone (135) is clamped in the sleeve (31), and the bottom of the hollow cone (135) is arranged to abut against the end of the brake push rod (33); wherein the middle ring hole of the second traction rope (40) is fixed on the eyelet hole (131).

5. A multifunctional mud sampling device according to claim 4, characterized in that: The float (134) is made of a material with a density less than 1000 kg / m 3 Made of material.

6. A multifunctional mud sampling device according to claim 1, characterized in that: The left half mud mining grab bucket (11) and the right half mud mining grab bucket (12) are two quarter hollow cylinders with the same structure and size.

7. A multifunctional mud sampling device according to claim 1, characterized in that: The water sampling module (90) comprises a syringe (91) and an electric push rod (92); the electric push rod (92) is mounted on the end of the syringe (91) and can slide in the inner cavity of the syringe (91).

8. A method for using a multifunctional mud sampler, characterized in that: The following steps are involved: Step 1, first reset the pull rope switch, connect the sleeve assembly (30) and the ring rod assembly (130) together, and make the water sampling module (90) in the initial state, and the electric push rod (92) extends to the bottom of the syringe (91); Step 2, then slowly lower the mud sampler to the bottom of the water by means of the lifting rope (10). During this process, due to the force applied to the lifting rope (10), the upper surface of the brake push rod (33) and the lower surface of the hollow truncated cone (135) have a large contact force, and the float (134) cannot radially push the brake push rod (33) open under the action of buoyancy; when the mud sampler touches the bottom, the lifting rope (10) relaxes and is no longer subjected to force. At this time, the upper surface of the brake push rod (33) and the lower surface of the hollow truncated cone (135) are only slightly in contact, and the float (134) will radially push the brake push rod (33) open under the action of buoyancy, causing the brake push rod (33) to lose its braking effect; since the second traction rope (40) is in a relaxed state, the left half mud grab (11) and the right half mud grab (11) are in a relaxed state. The bucket (12) will close naturally under the action of the counterweight (70), and at the same time, the water sampling module (90) will retract through the electric push rod (92) to suck the bottom water into the syringe (91), completing the water sampling operation. Furthermore, each instrument module on the mud sampler completes the corresponding data collection work; wherein, the counterweight (70) and the instrument bracket (103) are respectively equipped with a group of cameras (50) and lighting lamps (80), which are respectively used to photograph the seabed conditions under different fields of view; the temperature-salinity-depth meter (60) and the hydroacoustic beacon (110) are used to collect the seabed temperature, salinity, depth and sampling coordinate position; the air holes (102) on the upper surface and side of the left half mud grab (11) and the right half mud grab (12) are used to discharge the water in the grab cavity when the grab is closed; Step 3, when all operations are completed, the mud sampler is lifted. At this time, the lifting rope (10) is tightened again. Since the brake push rod (33) loses its braking effect, the sleeve assembly (30) will be separated from the eye rod assembly (130). The second traction rope (40) no longer has a pulling force. Instead, the first traction rope (20) begins to be stressed. Under the pulling force of the first traction rope (20), the left half mud grab bucket (11) and the right half mud grab bucket (12) are tightly closed and lifted out of the water, completing the mud sampling operation.

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