A seabed cross-plate shear test device

Abstract

The present invention discloses a seabed cross-plate shear test device, comprising: a seabed platform and a control console; a base, wherein the base is arranged at the bottom of the seabed platform, and a driving structure and a solenoid valve structure are respectively arranged on both sides of the top of the base, and the driving structure comprises a motor and a first hydraulic oil tank. The present invention relates to the field of offshore engineering survey technology. The seabed cross-plate shear test device is connected to the entire seabed platform by arranging a control console, forming a program-controlled dual-purpose device for seabed cross-plate shear test and static penetration test, so that the seabed platform has the functions of penetrating and pulling out the probe rod probe, clamping and releasing the probe rod, slow rotation function of the test speed required by the specification, and fast rotation function for reshaping test, which replaces the manual operation of the probe rod in traditional equipment, realizes automated multifunctional operation, and well avoids the problem of low test accuracy and efficiency caused by manual operation.

Description

Technical Field

[0001] The invention relates to the technical field of offshore engineering survey, in particular to a seabed type cross-plate shear test device. Background Art

[0002] Offshore engineering survey refers to geological survey for the purpose of marine engineering construction, and the main work scope is in shallow waters. Through a large number of geophysical exploration, water drilling, seabed sampling, in-situ testing and other means, remote-controlled divers can also be used for underwater drilling, remote-controlled coring devices, cross-plate tests and in-hole pressure gauges to conduct a comprehensive analysis of the physical and mechanical properties of underwater sediments, material composition, and the distribution of underwater landslides, etc., to provide reliable geological data for the selection of construction sites and the structural design of buildings, so as to ensure the safety of marine engineering.

[0003] At present, in engineering surveys, the cross-plate shear test equipment used in domestic offshore cross-plate shear tests still has certain shortcomings: due to the influence of factors such as waves, tides, and water currents on offshore operations, the rotary device can only be fixed on the casing to carry out the cross-plate shear test during the test, and the probe is pressed down by artificial pressure. With such a test process, it is inevitably affected by waves and water currents, resulting in deviations in the test results; in addition, since the probe rod and the probe are pressed down by manpower, the downward pressure will be unbalanced, so that the probe rod and the probe are not vertical, resulting in deviations in the test results, and insufficient downward pressure, which greatly reduces the work efficiency when encountering relatively hard interlayers; in addition, since the rotary device in the existing equipment is fixed on the casing, the test can only be carried out during periods of small tidal changes and small waves, affecting the progress, and the process of using the rotary device fixed on the casing for the cross-plate shear test is limited in the applicable water depth range, and the field with a large water depth cannot be operated. In summary, the cross-plate shear test equipment currently used at sea has deviations in test results, low work efficiency and limited applicable water depth. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a seabed cross-plate shear test device, which solves the problems of low accuracy, low efficiency and limited applicable water depth of shear tests caused by manual downward pressure of probe rods and probes on offshore cross-plates.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A seabed cross-plate shear test device, comprising:

[0006] seabed platforms and control consoles;

[0007] A base, wherein the base is arranged at the bottom of the seabed platform, a driving structure and a solenoid valve structure are respectively arranged on both sides of the top of the base, the driving structure comprises a motor and a first hydraulic oil tank, the first hydraulic oil tank is located on the right side of the top of the base, and a hydraulic pump is arranged on the top of the first hydraulic oil tank, a motor watertight cover is arranged on the outside of the motor, and the solenoid valve structure comprises a hydraulic solenoid valve group and a second hydraulic oil tank;

[0008] A slow rotating structure, wherein the slow rotating structure is arranged on the seabed platform, and a fast rotating structure is arranged on the seabed platform;

[0009] Hydraulic cylinders, two of which are arranged in the middle of the top of the base, and guide columns are arranged on both sides of the top of the base;

[0010] A water pressure balance structure is arranged on the left side of the top of the seabed platform. A sounding structure is arranged on the seabed platform, and the sounding structure includes a test data acquisition instrument and a sounding rod.

[0011] Furthermore, the hydraulic solenoid valve group is arranged on the top of the second hydraulic oil tank, and the second hydraulic oil tank is arranged on the left side of the top of the base, and the outer part of the hydraulic solenoid valve group is provided with a valve group watertight cover.

[0012] Furthermore, the probe rod is movably connected to the inside of the seabed platform, a probe is provided at the bottom end of the probe rod, and the experimental data acquisition instrument is connected to the top end of the probe rod through an experimental data transmission cable.

[0013] Furthermore, lifting pulley blocks are provided on both sides of the top of the seabed platform, an enlarged skirt is provided at the bottom of the base, the slow-rotating structure is located above the fast-rotating structure, and probe holes are provided on the tops of the slow-rotating structure and the fast-rotating structure.

[0014] Furthermore, the top of the hydraulic cylinder piston rod is threadedly connected to both sides of the slow rotating structure via a screw, and the top of the guide column penetrates the interior of the slow rotating structure and is fixedly connected to the top of the seabed platform.

[0015] Furthermore, the hydraulic system on the seabed platform is connected to the input ends of the driving structure, the solenoid valve structure, the slow rotation structure and the fast rotation structure through hydraulic pipes respectively, and the output end of the console is connected to the seabed platform through a cable.

[0016] Furthermore, the slow-rotating structure and the fast-rotating structure are both provided with hydraulic clamping and releasing components and hydraulic motors, and the slow-rotating structure is provided with a worm gear reduction box.

[0017] Furthermore, a wear-resistant protective layer is provided on the outer surface of the seabed platform, and a corrosion-resistant layer is provided on one side of the wear-resistant protective layer.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The seabed cross-plate shear test device is connected to the entire seabed platform by setting a control console to form a program-controlled seabed cross-plate shear test and static penetration test dual-purpose device, so that the seabed platform has the functions of penetrating and pulling out the probe rod, clamping and loosening the probe rod, slow rotation function of the test speed required by the specification, and fast rotation function for completely destroying the soil body for reshaping test, replacing the manual operation of the probe rod in traditional equipment, realizing automatic multifunctional operation, and well avoiding the problem of low experimental accuracy and efficiency caused by manual operation;

[0020] By setting up a fast rotating mechanism and a slow rotating mechanism, the function of continuous penetration of the seabed platform is realized by utilizing the clamping and loosening coordination of the two. In addition, by setting up a lifting pulley block, the seabed platform can be lifted on the seabed surface by a survey ship, and a command can be issued by a control console placed on the survey ship to perform a cross-plate shear test, thereby eliminating the adverse effects of waves and water currents on the cross-plate shear test, improving the accuracy and efficiency of the cross-plate shear test, and applying it to a wider range of water depths. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the first embodiment of the seabed cross plate shear test device of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the seabed cross plate shear test device of the present invention;

[0023] Figure 3 It is a side view of the internal structure of the seabed cross plate shear test device of the present invention;

[0024] Figure 4 for Figure 1 A schematic diagram of the structure inside the slow rotating structure shown;

[0025] Figure 5 for Figure 1 A schematic diagram of the structure inside the fast rotating structure shown;

[0026] Figure 6 It is a control diagram inside the control console of the seabed cross plate shear test device of the present invention;

[0027] Figure 7 It is a hydraulic control diagram of the seabed platform in the seabed cross-plate shear test device of the present invention;

[0028] Figure 8It is a structural schematic diagram of the second embodiment of the seabed cross plate shear test device of the present invention.

[0029] In the figure: 1-seabed platform, 2-control console, 3-base, 4-drive structure, 41-motor, 42-first hydraulic oil tank, 43-hydraulic pump, 44-motor watertight cover, 5-solenoid valve structure, 51-hydraulic solenoid valve group, 52-second hydraulic oil tank, 53-valve group watertight cover, 6-slow rotation structure, 7-fast rotation structure, 8-hydraulic cylinder, 9-guide column, 10-water pressure balance structure, 111-experimental data acquisition instrument, 112-probe, 113-probe, 12-lifting pulley block, 13-enlarged skirt, 14-probe hole, 15-hydraulic clamping and releasing assembly, 16-hydraulic motor, 17-worm gear reduction box, 18-wear-resistant protective layer, 19-corrosion-resistant layer, 20-survey vessel. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-7 The present invention provides a technical solution: a seabed cross-plate shear test device, comprising:

[0032] Seabed platform 1 and control console 2;

[0033] A base 3, wherein the base 3 is arranged at the bottom of the seabed platform 1, and a driving structure 4 and a solenoid valve structure 5 are respectively arranged on both sides of the top of the base 3, wherein the driving structure 4 comprises a motor 41 and a first hydraulic oil tank 42, wherein the first hydraulic oil tank 42 is located on the right side of the top of the base 3, and a hydraulic pump 43 is arranged on the top of the first hydraulic oil tank 42, and a motor watertight cover 44 is arranged on the outside of the motor 41, and the solenoid valve structure 5 comprises a hydraulic solenoid valve group 51 and a second hydraulic oil tank 52;

[0034] A slow rotating structure 6, wherein the slow rotating structure 6 is arranged on the seabed platform 1, and a fast rotating structure 7 is arranged on the seabed platform 1;

[0035] Hydraulic cylinders 8, two of the hydraulic cylinders 8 are arranged in the middle of the top of the base 3, and guide columns 9 are arranged on both sides of the top of the base 3;

[0036] The water pressure balance structure 10 is arranged on the left side of the top of the seabed platform 1 . A sounding structure is arranged on the seabed platform 1 . The sounding structure includes an experimental data acquisition instrument 111 and a probe rod 112 .

[0037] The seabed platform 1 is placed on the seabed position of the test point by using a winch and a tower on the survey ship and a steel wire rope, and the operation of the seabed platform 1 is controlled by a control console 2 placed on the survey ship;

[0038] The driving structure 4 provides power support for the hydraulic system on the entire seabed platform 1. The motor 41 is powered by a cable. The motor watertight cover 44 provides good waterproofing for the motor 41. The output end of the motor 41 is connected to the input end of the hydraulic pump 43. The solenoid valve structure 5 is used to control the hydraulic system on the seabed platform 1. The valve group watertight cover 53 outside the hydraulic solenoid valve group 51 provides good waterproofing for it.

[0039] The slow rotating structure 6 is located in the middle of the seabed platform 1, and is arranged in cooperation with the fast rotating structure 7 to achieve the clamping and loosening of the probe rod 112 during fast and slow ascent and descent, thereby achieving the control of the probe rod 112;

[0040] Two hydraulic cylinders 8 are symmetrically arranged on the base 2. The lifting and lowering of the slow rotating structure 6 is controlled by lifting and lowering the piston rods on the hydraulic cylinders 8. The guide column 9 plays a guiding role in the lifting and lowering of the slow rotating structure 6. The guide column 9 passes through the reserved hole of the slow rotating structure 6 and is fixed to the top frame of the seabed platform 1 by screws. At the same time, the two hydraulic cylinders are located on both sides of the fast rotating structure 7.

[0041] By setting up the control console 2 to be connected with the entire seabed platform 1, a program-controlled dual-purpose device for seabed cross-plate shear test and static penetration test is formed, so that the seabed platform 1 has the functions of penetrating and pulling out the probe rod, clamping and loosening the probe rod, slow rotation function of the test speed required by the specification, and fast rotation function for completely destroying the soil body for reshaping test, which replaces the manual operation of the probe rod in traditional equipment, realizes automatic multifunctional operation, and well avoids the problem of low experimental accuracy and efficiency caused by manual operation;

[0042] By setting up a fast rotating mechanism 7 and a slow rotating mechanism 6, the function of continuous penetration of the seabed platform 1 is realized by utilizing the clamping and loosening coordination of the two. In addition, by setting up a lifting pulley block 13, the seabed platform 1 can be lifted on the seabed surface by a survey ship, and a control console placed on the survey ship can be used to issue instructions to perform a cross-plate shear test, thereby eliminating the adverse effects of waves and water currents on the cross-plate shear test, improving the accuracy and efficiency of the cross-plate shear test, and applying it to a wider range of water depths.

[0043] The hydraulic solenoid valve group 51 is arranged on the top of the second hydraulic oil tank 52 , and the second hydraulic oil tank 52 is arranged on the left side of the top of the base 3 . The hydraulic solenoid valve group 51 is externally sheathed with a valve group watertight cover 53 .

[0044] The valve group watertight cover 53 plays a good waterproof role for the hydraulic solenoid valve group 51 inside it.

[0045] The probe rod is movably connected to the inside of the seabed platform. A probe 113 is provided at the bottom end of the probe rod 112. The experimental data acquisition instrument 111 is connected to the top end of the probe rod 112 via an experimental data transmission cable.

[0046] The probe rod 112 is placed into the seabed platform 1 only when conducting a test, and passes through the adapted probe rod holes 14 in the slow rotating structure 5 and the fast rotating structure 6 in sequence, and its bottom extends to the bottom of the base 3 .

[0047] Lifting pulley blocks 12 are provided on both sides of the top of the seabed platform 1, an enlarged skirt 13 is provided at the bottom of the base 3, the slow rotating structure 6 is located above the fast rotating structure 7, and probe holes 14 are provided at the tops of the slow rotating structure 6 and the fast rotating structure 7.

[0048] The two lifting pulley blocks 12 are respectively located on the left and right sides of the top of the seabed platform 1. By connecting the lifting equipment to the lifting pulley blocks 12, the entire seabed platform 1 can be lifted and smoothly placed in the sea. The probe rod holes 14 in the slow-rotating structure 6 and the fast-rotating structure 7 are located on the same vertical axis, ensuring that the probe rod 14 can be smoothly extended downward.

[0049] The top of the piston rod of the hydraulic cylinder 8 is threadedly connected to both sides of the slow rotating structure 6 via a screw, and the top of the guide column 9 penetrates the interior of the slow rotating structure 6 and is fixedly connected to the top of the seabed platform 1 .

[0050] The two guide posts 9 are movably connected to the left and right sides of the slow rotating structure 6 and the fast rotating structure 7 respectively, playing the role of fixing and limiting both.

[0051] The hydraulic system on the seabed platform 1 is connected to the input ends of the driving structure 4, the solenoid valve structure 5, the slow rotating structure 6 and the fast rotating structure 7 through hydraulic pipes respectively, and the output end of the console 2 is connected to the seabed platform 1 through a cable.

[0052] The driving structure 4, the solenoid valve structure 5, the slow rotating structure 6 and the fast rotating structure 7 are respectively connected through hydraulic pipes to realize a complete hydraulic system, and the seabed platform 1 is controlled by the control console 2 to perform underwater experimental operations.

[0053] The slow-rotating structure 6 and the fast-rotating structure 7 are both provided with a hydraulic clamping and releasing assembly 15 and a hydraulic motor 16 , and the slow-rotating structure 6 is provided with a worm gear reduction box 17 .

[0054] In the slow-rotating structure 6, the hydraulic motor 16 is connected to the speed-changing worm gear turbine group in the gearbox, the worm gear turbine group is connected to the hollow shaft, and a bearing and a shaft rotary sealing ring are arranged between the hollow shaft and the housing of the slow-rotating mechanism. After being decelerated by the deceleration turbine group, the rotation speed of the hydraulic motor 16 is converted into the probe rod test rotation speed required by the cross plate shear test specification. The bottom of the hollow shaft is connected to the clamping hydraulic cylinder bracket, and the sleeve is provided with an upper hydraulic pipe oil interface and a lower hydraulic pipe oil interface of the slow-rotating structure 6. The upper hydraulic pipe oil interface and the lower hydraulic pipe oil interface are respectively connected to the upper hydraulic oil ring and the lower hydraulic oil ring of the slow-rotating structure 6, so that the function of the hydraulic oil can circulate and work when the sleeve rotates is realized. The upper and lower hydraulic oil rings are provided with shaft rotary sealing rings, and are respectively provided with oil circuits connected to the oil rings. The oil circuits are connected to the hydraulic pipe interface of the clamping hydraulic cylinder bracket, so as to realize the function of supplying hydraulic oil to the clamping hydraulic cylinder. The probe rod 112 can pass through the probe rod hole 14 of the hollow shaft;

[0055] In the fast rotating structure 7, a through-hole radial spherical hydraulic motor 16 is provided, and a conical hollow shaft passes through the through hole of the through-hole radial spherical hydraulic motor 16. A slidable key and keyway are used to connect the hydraulic motor 16 and the hollow shaft to realize the function of the hydraulic motor 16 driving the hollow shaft to rotate. A conical slip is provided at the bottom of the hollow shaft, and a lower sleeve is provided at the bottom of the hydraulic motor 16 and the hollow shaft, and a slip seat is provided in the sleeve. An upper sleeve is installed outside the hollow shaft at the upper part of the hydraulic motor 16, and the upper sleeve is provided with an upper hydraulic oil interface and a lower hydraulic oil interface. A hydraulic valve is used to control the hollow shaft to slide up and down. When the hollow shaft slides downward, the conical slip at the bottom becomes smaller in diameter under the action of the slip seat, thereby realizing the function of clamping the probe rod 112. When the hollow shaft slides upward, the conical slip at the bottom restores its original diameter, thereby realizing the function of loosening the probe rod 113.

[0056] like Figure 6 In the control console 1, the control console 1 is composed of a PLC module power supply, a relay group, an electronic switch group, an indicator light group and a counter, which can realize the function of implementing the corresponding action of the seabed platform by operating the electronic switch, and can realize the function of automatic testing through programming. When the indicator light is on, it means that the corresponding electronic switch is in the closed working state.

[0057] Working principle:

[0058] S1. After the seabed platform 1 and the control console 2 are connected by cables and powered on, the probe rod 112 is installed into the probe rod hole 14, and the probe 113 of the cross plate shear test is installed at the lower end of the probe rod 112, so that the height of the probe 113 of the cross plate shear test is consistent with that of the expanded skirt plate 13. At this time, the lifting hydraulic cylinder 8 should be in the highest position, and the probe rod clamping button of the fast rotating structure 7 is pressed on the control console 2. The clamping slips of the fast rotating structure 7 clamp the probe rod 112, and the seabed platform 1 with the probe rod 112 installed is connected to the lifting pulley block 12 using the lifting equipment on the survey ship and the seabed platform 1 is hoisted to the seabed surface. During the hoisting process, the probe rods 112 are connected one by one, and the seabed platform 1 is stably placed on the seabed surface;

[0059] S2, press the slow clamping button on the control console 2, at this time the clamping hydraulic cylinder of the slow rotating structure 6 works to clamp the probe rod 112, then press the fast rotation release button to make the conical slip of the fast rotating structure 7 release the probe rod 112, press the descending button of the lifting hydraulic cylinder 8 to control the piston rod of the lifting hydraulic cylinder 8 to descend, drive the slow rotating structure 6 to descend, and the probe rod 112 also descends, pressing the probe 113 into the soil layer on the seabed, and at the same time when the lifting hydraulic pressure descends to the bottom, the counter of the control console counts once to record the depth of the probe into the soil, press the slow rotation button, the slow rotating structure 6 drives the probe rod 112 and the probe 113 to rotate at the set cross-plate shear test speed that meets the requirements of the specification to perform the original soil cross-plate shear test, record the test data in the test data acquisition instrument at the specified time interval, obtain the peak value of the original soil being sheared and damaged, and after completing the original soil cross-plate shear test, press the fast rotation release clamping button to control the conical slip of the fast rotating structure 7 to clamp the probe rod 112;

[0060] S3, then press the slow rotation release button to control the clamping hydraulic cylinder of the slow rotation structure 6 to release the probe rod 112, and then press the fast rotation button to control the fast selection mechanism to rotate six times to completely destroy the soil, then press the slow rotation clamping button to control the clamping hydraulic cylinder of the slow rotation structure 6 to clamp the probe rod 112, press the fast rotation release button to control the conical slip of the fast rotation structure 7 to release the probe rod, wait for a few minutes until the excess pore water pressure of the soil dissipates to a certain extent and reshape, press the slow rotation button, the slow rotation structure 6 drives the probe rod 112 and the probe 113 to rotate at the set cross-plate shear test speed that meets the requirements of the specification to perform the reshaped soil cross-plate shear test, record the test data in the test data acquisition instrument at the specified time interval, and obtain the peak value of the shear damage of the reshaped soil. By pre-programming, press the automatic button on the console 2 to automatically perform the above-mentioned working steps;

[0061] S4. After completing the cross-plate shear test of the reshaped soil at the test point, press the fast-rotation clamping button to control the tapered slips of the fast-rotating structure 7 to clamp the probe rod 112, press the slow-rotation release button to control the clamping hydraulic cylinder of the slow-rotating structure 6 to release the probe rod 112, press the lifting hydraulic cylinder rising button to control the piston rod of the lifting hydraulic cylinder to rise and drive the slow-rotating structure 6 to rise. In this state, the probe rod 112 and the probe head remain stationary in the original position. After the piston rod of the hydraulic cylinder 8 rises to the top, press the slow-rotation clamping button to control the clamping hydraulic cylinder of the slow-rotating structure 6 to clamp the probe rod 112, press the fast-rotation release button to control the tapered slips of the fast-rotating structure 7 to release the probe rod 112, press the lifting hydraulic cylinder 8 descending button to control the piston rod of the lifting hydraulic cylinder 8 to descend, drive the slow-rotating structure 6 to descend, and the probe rod 112 also descends accordingly, and press the probe head 113 into the next test point of the soil layer, and perform the cross-plate shear test of the second test point according to the above process. Repeat this cycle to perform the cross-plate shear test of each test point.

[0062] S5. After completing the cross plate shear test of each test point of the test hole, the seabed platform is now in a state where the slow rotating structure 6 clamps the probe rod 112, the fast rotating structure 7 releases the probe rod 112, and the lifting hydraulic piston rod is at the bottom. Press the lifting hydraulic cylinder 8 rising button to control the lifting hydraulic cylinder 8 piston rod to rise and drive the slow rotating structure 6 to rise, thereby driving the probe rod 112 and the probe 113 to rise. After the lifting hydraulic piston rod 8 rises to the top, press the fast rotation release clamping button to control the conical slip of the fast rotating structure 7 to clamp the probe rod 112, then press the slow rotation release button to control the clamping hydraulic cylinder of the slow rotating structure 6 to release the probe rod 112, press the lifting hydraulic cylinder descending button to control the lifting hydraulic cylinder 8 piston rod to drive the slow rotating structure 6 to descend, in this state, the probe rod 112 and the probe 113 remain in place, then press the slow rotation clamping, fast rotation release, and lifting hydraulic cylinder rising buttons, such as the rising cycle to pull out the probe rod 112 and the probe to the seabed surface;

[0063] S6. When conducting a static penetration test, the cross-plate probe, cable and data collector are replaced with a static penetration probe, cable and data collector through a conversion adapter, and only the penetration procedure of the lower probe rod 112 is carried out according to the above steps. During the penetration process, the static penetration test data is collected by the onboard data collector, and the static penetration test can be carried out.

[0064] Second embodiment

[0065] Please refer to Figure 8 Based on the seabed cross-plate shear test device provided by the first embodiment of the present invention, the second embodiment of the present invention provides another seabed cross-plate shear test device, wherein the second embodiment does not hinder the independent implementation of the technical solution of the first embodiment.

[0066] Specifically, the present invention provides another seabed cross-plate shear test device, which is different in that:

[0067] A wear-resistant protective layer 18 is disposed on the outer surface of the seabed platform 1 , and a corrosion-resistant layer 19 is disposed on one side of the wear-resistant protective layer 18 .

[0068] A wear-resistant protective layer 18 is provided on the outer surface of the entire seabed platform 1. The wear-resistant protective layer 18 is mainly a wear-resistant ceramic coating with extremely high mechanical strength and rigidity. The ceramic wear-resistant coating is mainly composed of wear-resistant aggregate and a bonding system, has a very high density, has no large macroscopic defects, and has a strength of up to 130Mpa. It can increase the hardness of its outer surface and will not be easily damaged in the event of a collision. The corrosion-resistant layer 19 is coated with phenolic resin and has excellent corrosion resistance. It can protect the outer surface of the seabed platform 1 from being easily corroded when it is in water for a long time, and has a good protective effect on its surface. By providing a wear-resistant protective layer 18 and a corrosion-resistant layer 19 on the outer surface of the seabed platform 1, it has good corrosion resistance and wear resistance, can adapt to humid underwater work for a long time, reduce regular surface inspections, save a certain amount of manpower and material resources, and extend the service life of the entire seabed platform 1.

[0069] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A seabed cross-plate shear test device, characterized in that: include: seabed platforms and control consoles; A base, wherein the base is arranged at the bottom of the seabed platform, a driving structure and a solenoid valve structure are respectively arranged on both sides of the top of the base, the driving structure comprises a motor and a first hydraulic oil tank, the first hydraulic oil tank is located on the right side of the top of the base, and a hydraulic pump is arranged on the top of the first hydraulic oil tank, a motor watertight cover is arranged on the outside of the motor, and the solenoid valve structure comprises a hydraulic solenoid valve group and a second hydraulic oil tank; A slow rotating structure, wherein the slow rotating structure is arranged on the seabed platform, and a fast rotating structure is arranged on the seabed platform; Hydraulic cylinders, two of which are arranged in the middle of the top of the base, and guide columns are arranged on both sides of the top of the base; A water pressure balance structure, wherein the water pressure balance structure is arranged on the left side of the top of the seabed platform, a sounding structure is arranged on the seabed platform, the sounding structure includes an experimental data acquisition instrument and a sounding rod, lifting pulley blocks are arranged on both sides of the top of the seabed platform, an enlarged skirt is arranged at the bottom of the base, the slow rotating structure is located above the fast rotating structure, and the tops of the slow rotating structure and the fast rotating structure are both provided with sounding rod holes, the top of the hydraulic cylinder piston rod is threadedly connected to the two sides inside the slow rotating structure through a screw, the top of the guide column passes through the interior of the slow rotating structure and is fixedly connected to the top of the seabed platform, the hydraulic system on the seabed platform is connected to the input ends of the driving structure, the solenoid valve structure, the slow rotating structure and the fast rotating structure through hydraulic pipes, respectively, the output end of the console is connected to the seabed platform through a cable, the slow rotating structure and the fast rotating structure are both provided with hydraulic clamping and releasing components and hydraulic motors, and the slow rotating structure is provided with a worm gear reducer.

2. A seabed cross plate shear test device according to claim 1, characterized in that: The hydraulic solenoid valve group is arranged on the top of the second hydraulic oil tank, and the second hydraulic oil tank is arranged on the left side of the top of the base. The outer sleeve of the hydraulic solenoid valve group is provided with a valve group watertight cover.

3. A seabed cross plate shear test device according to claim 1, characterized in that: The probe rod is movably connected to the inside of the seabed platform, a probe is provided at the bottom end of the probe rod, and the experimental data acquisition instrument is connected to the top end of the probe rod through an experimental data transmission cable.

4. The seabed cross plate shear test device according to claim 1, characterized in that: A wear-resistant protective layer is arranged on the outer surface of the seabed platform, and a corrosion-resistant layer is arranged on one side of the wear-resistant protective layer.

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