Test apparatus and method for laboratory simulation of mooring line loading on a floating platform

Abstract

The application discloses a kind of test devices for laboratory simulation floating platform to mooring chain loading in the technical field of ocean engineering, comprising: loading profile and the transverse loading mechanism and longitudinal loading mechanism oppositely arranged in the two sides of the loading profile;The transverse loading mechanism can make the loading profile do transverse simple harmonic motion, the longitudinal loading mechanism can make the loading profile do longitudinal simple harmonic motion, the transverse loading mechanism can absorb the longitudinal simple harmonic motion of the loading profile, the longitudinal loading mechanism can absorb the transverse simple harmonic motion of the loading profile, so that the motion of two dimensions can be coupled on the loading profile.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ocean engineering, and in particular to a test device and method for simulating the loading of a mooring chain by a floating platform in a laboratory. BACKGROUND

[0002] With the continuous development of offshore wind power, the trend is towards deep and far seas, and floating wind power infrastructure plays an increasingly important role. Floating wind power is generally composed of an upper structure (floating platform and wind turbine) and a floating foundation (mooring chain and anchor foundation). The upper structure is subjected to cyclic loads such as wind and waves, which causes the mooring chain to move cyclically, thereby generating cyclic loads on the mooring chain.

[0003] The floating platform is a very complex three-dimensional motion under the action of wind, wave and current loads. The existing mooring chain test loading device simplifies the complex three-dimensional motion into three one-dimensional simple harmonic motions (longitudinal, transverse and vertical), and uses a control box, a motor and a sliding device to simulate the loading process of the floating platform on the mooring chain in a single dimension.

[0004] Although the influence of the motion of the floating platform in a single dimension on the mechanical behavior of the mooring chain is studied separately, the loading process of the actual floating platform on the mooring chain is a complex three-dimensional motion. The influence of different dimensional motions on the mechanical behavior of the mooring chain, the turbulence generated by the motion of the mooring chain and the disturbance of the mooring chain to the soil are not simply linearly superimposed, and the coupling effect of the mooring chain under different dimensional motions cannot be simulated and studied. SUMMARY

[0005] The present application aims to provide a test device for simulating the loading of a mooring chain by a floating platform in a laboratory, to solve the technical problem that the coupling effect of the mooring chain under different dimensional motions cannot be simulated and studied in the prior art.

[0006] To solve the above technical problems, the present application specifically provides a test device for simulating the loading of a mooring chain by a floating platform in a laboratory, comprising:

[0007] a loading profile and a transverse loading mechanism and a longitudinal loading mechanism arranged opposite to both sides of the loading profile;

[0008] The transverse loading mechanism can make the loading profile move in a transverse simple harmonic motion, and the longitudinal loading mechanism can make the loading profile move in a longitudinal simple harmonic motion. The transverse loading mechanism can absorb the longitudinal simple harmonic motion of the loading profile, and the longitudinal loading mechanism can absorb the transverse simple harmonic motion of the loading profile, so that the motion in two dimensions can be coupled on the loading profile.

[0009] The motion period of the transverse loading mechanism and the longitudinal loading mechanism can be adjusted to realize the same period or different period simple harmonic motion of the loading profile in two dimensions.

[0010] The motion distance of the transverse loading mechanism and the longitudinal loading mechanism can be adjusted to realize the same amplitude or different amplitude simple harmonic motion of the loading profile in two dimensions.

[0011] As a preferred scheme of the present application, the transverse loading mechanism comprises a longitudinal displacement absorbing mechanism mounted on the loading profile, for absorbing the longitudinal simple harmonic motion of the loading profile.

[0012] The longitudinal displacement absorbing mechanism is connected with a transverse displacement applying mechanism away from one side of the loading profile, for applying reciprocating transverse push-pull force to the loading profile, so that the loading profile makes transverse simple harmonic motion.

[0013] The longitudinal loading mechanism comprises a transverse displacement absorbing mechanism mounted on the loading profile, for absorbing the transverse simple harmonic motion of the loading profile.

[0014] The transverse displacement absorbing mechanism is connected with a longitudinal displacement applying mechanism away from one side of the loading profile, for applying reciprocating longitudinal push-pull force to the loading profile, so that the loading profile makes longitudinal simple harmonic motion.

[0015] As a preferred scheme of the present application, the longitudinal displacement absorbing mechanism comprises a longitudinal absorbing slide fixedly mounted on the loading profile and a longitudinal absorbing guide slidably connected with the longitudinal absorbing slide, and the transverse displacement applying mechanism is connected with the longitudinal absorbing guide.

[0016] The transverse displacement absorbing mechanism comprises a transverse absorbing slide fixedly mounted on the loading profile and a transverse absorbing guide slidably connected with the transverse absorbing slide, and the longitudinal displacement applying mechanism is connected with the transverse absorbing guide.

[0017] As a preferred scheme of the present application, the transverse displacement applying mechanism comprises a transverse positioning guide fixedly mounted on the profile frame, a transverse positioning slide slidably connected with the transverse positioning guide, a transversely arranged transverse displacement guide fixedly connected with the transverse positioning slide through a first adapter plate, a transverse displacement slide slidably connected with the transverse displacement guide, and a transverse loading rocker rotatably connected with the transverse displacement slide.

[0018] The longitudinal absorbing guide is fixedly connected with the first adapter plate through a first connecting profile, to conduct transverse displacement to the longitudinal absorbing guide and the loading profile.

[0019] The guide rail and the sliding block between the loading profile and the transverse loading rocker arm can convert the circumferential rotation of the transverse loading rocker arm in a plane into the transverse harmonic motion of the loading profile.

[0020] As a preferred scheme of the present application, the longitudinal displacement applying mechanism comprises a longitudinal positioning guide rail fixedly installed on the profile frame, a longitudinal positioning sliding block in sliding connection with the longitudinal positioning guide rail, a transversely arranged longitudinal displacement guide rail fixedly connected with the longitudinal positioning sliding block through a second adapter plate, a longitudinal displacement sliding block in sliding connection with the longitudinal displacement guide rail, and a longitudinal loading rocker arm in rotational connection with the longitudinal displacement sliding block.

[0021] The transverse absorption guide rail is fixedly connected with the second adapter plate through a second connecting profile to conduct the transverse displacement to the transverse absorption guide rail and the loading profile.

[0022] The guide rail and the sliding block between the loading profile and the longitudinal loading rocker arm can convert the circumferential rotation of the longitudinal loading rocker arm in a plane into the longitudinal harmonic motion of the loading profile.

[0023] As a preferred scheme of the present application, the rotational connection mode of the transverse loading rocker arm and the transverse displacement sliding block is the same as the rotational connection mode of the longitudinal loading rocker arm and the longitudinal displacement sliding block.

[0024] The transverse loading rocker arm is fixedly connected with the first bearing seat, the transverse displacement sliding block is fixedly connected with the second bearing seat, and the first bearing seat is in rotational connection with the second bearing seat.

[0025] As a preferred scheme of the present application, a plurality of groups of mounting holes are arranged on the transverse loading rocker arm and the longitudinal loading rocker arm along the length direction thereof, the mounting position of the first bearing seat can be adjusted, and the amplitude of the harmonic motion of the loading profile can be adjusted.

[0026] To solve the above technical problems, the present application further provides a test method for simulating the loading of a mooring chain on a floating platform in a laboratory, which uses the above test device, adjusts the motion period of the transverse loading mechanism and the longitudinal loading mechanism and the motion distance of the transverse loading mechanism and the longitudinal loading mechanism, and can make the loading profile perform harmonic motion in two dimensions with the same period and bucket amplitude, harmonic motion with the same period but different amplitudes, harmonic motion with different periods but the same amplitude, or harmonic motion with different periods and different amplitudes.

[0027] Compared with the prior art, the present application has the following beneficial effects:

[0028] The transverse loading mechanism can make the loading section do transverse simple harmonic motion, the longitudinal loading mechanism can make the loading section do longitudinal simple harmonic motion, the transverse loading mechanism can absorb the longitudinal simple harmonic motion of the loading section, and the longitudinal loading mechanism can absorb the transverse simple harmonic motion of the loading section. The motions in two dimensions can be coupled on the loading section and only on the loading section, so that the process of loading the mooring chain by the floating platform in two dimensions can be simulated, and the coupling between the motions in different dimensions can be studied. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only exemplary, and other drawings can be obtained by the provided drawings without creative labor for those skilled in the art.

[0030] Figure 1 It is a schematic diagram of the overall structure of the test device in the present application.

[0031] Figure 2 It is a schematic diagram of the overall structure of the test device in the present application. Figure 1 It is a schematic diagram of the structure after the electrodes, the speed reducer and the loading rocker arm are hidden.

[0032] Figure 3 It is a schematic diagram of the structure after the electrodes, the speed reducer and the loading rocker arm are hidden. Figure 2 It is a schematic diagram of the structure after the electrodes, the speed reducer and the loading rocker arm are hidden.

[0033] Figure 4 It is a schematic diagram of the connection of the loading section and the longitudinal absorbing slider and the transverse absorbing slider.

[0034] Figure 5 It is a schematic diagram of the structure of the motor, the speed reducer and the transverse loading rocker arm.

[0035] Figure 6 It is a schematic diagram of the structure of the transverse loading rocker arm.

[0036] Figure 7 It is a schematic diagram of the structure of the longitudinal absorbing slider and the rotary connection structure.

[0037] The numbers in the drawings represent the following respectively:

[0038] 1 - loading section;

[0039] 2 - transverse loading mechanism;

[0040] 201 - longitudinal displacement absorbing mechanism, 2011 - longitudinal absorbing slider, 2012 - longitudinal absorbing guide rail;

[0041] 202 - transverse displacement applying mechanism, 2021 - transverse positioning guide rail, 2022 - transverse positioning slider, 2023 - first adapter plate, 2024 - transverse displacement guide rail, 2025 - transverse displacement slider, 2026 - transverse loading rocker, 2027 - first connecting profile, 2028 - first bearing seat, 2029 - second bearing seat, 2030 - mounting hole;

[0042] 3 - longitudinal loading mechanism;

[0043] 301 - transverse displacement absorbing mechanism, 3011 - transverse absorbing slider, 3012 - transverse absorbing guide rail;

[0044] 302 - longitudinal displacement applying mechanism, 3021 - longitudinal positioning guide rail, 3022 - longitudinal positioning slider, 3023 - second adapter plate, 3024 - longitudinal displacement guide rail, 3025 - longitudinal displacement slider, 3026 - longitudinal loading rocker, 3027 - second connecting profile;

[0045] 4 - profile frame. DETAILED DESCRIPTION

[0046] 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 the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0047] The present application specifically provides a test device for simulating the loading of a mooring chain on a floating platform in a laboratory, comprising:

[0048] The loading profile 1 and the transverse loading mechanism 2 and the longitudinal loading mechanism 3 arranged opposite to both sides of the loading profile 1;

[0049] The transverse loading mechanism 2 can make the loading profile 1 do transverse simple harmonic motion, and the longitudinal loading mechanism 3 can make the loading profile 1 do longitudinal simple harmonic motion. The transverse loading mechanism 2 can absorb the longitudinal simple harmonic motion of the loading profile 1, and the longitudinal loading mechanism 3 can absorb the transverse simple harmonic motion of the loading profile 1.

[0050] That is, the transverse loading mechanism 2 and the loading profile 1 only have a movement connection relationship in the transverse direction, the loading profile 1 and the transverse loading mechanism 2 can freely move relative to each other in the longitudinal direction, and the longitudinal simple harmonic motion of the loading profile 1 cannot be synchronously transmitted to the transverse loading mechanism 2; the longitudinal loading mechanism 3 and the loading profile 1 only have a movement connection relationship in the longitudinal direction, the loading profile 1 and the longitudinal loading mechanism 3 can freely move relative to each other in the transverse direction, and the transverse simple harmonic motion of the loading profile 1 cannot be synchronously transmitted to the longitudinal loading mechanism 3; so that the motion in two dimensions can be coupled only on the loading profile 1, and the loading process of the floating platform on the mooring chain in two dimensions can be simulated at the same time, and the coupling effect between the motions in different dimensions can be studied.

[0051] Although the transverse simple harmonic motion and the longitudinal simple harmonic motion are coupled on the loading profile 1, due to the independent characteristics of the transverse loading mechanism 2 and the longitudinal loading mechanism 3, there is no mutual interference, so the motion period of the transverse loading mechanism 2 and the longitudinal loading mechanism 3 can be freely adjusted to realize the simple harmonic motion of the loading profile 1 in two dimensions with the same period or different periods.

[0052] For example, the transverse loading mechanism 2 makes the transverse simple harmonic motion of the loading profile 1 have a period of 5 seconds, and the longitudinal loading mechanism 3 can make the longitudinal simple harmonic motion of the loading profile 1 have a period of 8 seconds.

[0053] Based on the same reason, the motion distance of the transverse loading mechanism 2 and the longitudinal loading mechanism 3 can be adjusted to realize the simple harmonic motion of the loading profile 1 in two dimensions with the same amplitude or different amplitudes.

[0054] For example, the transverse loading mechanism 2 makes the amplitude of the transverse simple harmonic motion of the loading profile 1 be 50mm, and the longitudinal loading mechanism 3 can make the amplitude of the longitudinal simple harmonic motion of the loading profile 1 be 20mm.

[0055] Further, the transverse loading mechanism 2 has the following structure:

[0056] The transverse loading mechanism 2 includes a longitudinal displacement absorbing mechanism 201 mounted on the loading profile 1, for absorbing the longitudinal simple harmonic motion of the loading profile 1;

[0057] The longitudinal displacement absorbing mechanism 201 is connected with a transverse displacement applying mechanism 202 on the side away from the loading profile 1, for applying a reciprocating transverse pushing and pulling force to the loading profile 1, so that the loading profile 1 performs transverse simple harmonic motion;

[0058] The longitudinal displacement absorbing mechanism 201 can make the loading profile 1 and the transverse displacement applying mechanism 202 move freely relative to each other in the longitudinal direction, and can synchronously transmit the transverse displacement applied by the transverse displacement applying mechanism 202 to the loading profile 1.

[0059] Further, the longitudinal loading mechanism 3 is configured as follows:

[0060] The longitudinal loading mechanism 3 comprises a transverse displacement absorbing mechanism 301 mounted on the loading profile 1, for absorbing the transverse simple harmonic motion of the loading profile 1.

[0061] The transverse displacement absorbing mechanism 301 is connected with a longitudinal displacement applying mechanism 302 away from the side of the loading profile 1, for applying reciprocating longitudinal push-pull force to the loading profile 1, so as to make the loading profile 1 do longitudinal simple harmonic motion.

[0062] The transverse displacement absorbing mechanism 301 can make the loading profile 1 and the longitudinal displacement applying mechanism 302 relatively freely move in the transverse direction, and can synchronize the longitudinal displacement applied by the longitudinal displacement applying mechanism 302 to the loading profile 1.

[0063] Further, the longitudinal displacement absorbing mechanism 201 is configured as follows:

[0064] The longitudinal displacement absorbing mechanism 201 comprises a longitudinal absorbing slider 2011 fixedly mounted on the loading profile 1, and a longitudinal absorbing guide rail 2012 in sliding connection with the longitudinal absorbing slider 2011, and the transverse displacement applying mechanism 202 is connected with the longitudinal absorbing guide rail 2012.

[0065] That is, the longitudinal absorbing slider 2011 cooperates with the longitudinal absorbing guide rail 2012 to absorb the longitudinal displacement between the transverse displacement applying mechanism 202 and the loading profile 1, and only the transverse displacement can be transmitted between the transverse displacement applying mechanism 202 and the loading profile 1, so as to make the loading profile 1 do transverse simple harmonic motion.

[0066] Further, the transverse displacement absorbing mechanism 301 is configured as follows:

[0067] The transverse displacement absorbing mechanism 301 comprises a transverse absorbing slider 3011 fixedly mounted on the loading profile 1, and a transverse absorbing guide rail 3012 in sliding connection with the transverse absorbing slider 3011, and the longitudinal displacement applying mechanism 302 is connected with the transverse absorbing guide rail 3012.

[0068] That is, the transverse absorbing slider 3011 cooperates with the transverse absorbing guide rail 3012 to absorb the transverse displacement between the longitudinal displacement applying mechanism 302 and the loading profile 1, and only the longitudinal displacement can be transmitted between the longitudinal displacement applying mechanism 302 and the loading profile 1, so as to make the loading profile 1 do longitudinal simple harmonic motion.

[0069] It can be understood that the above-mentioned slider and guide rail cooperation to realize displacement absorption mode, can be replaced by slider and sliding groove cooperation mode, also can be replaced by telescopic rod form. For example, one end of the longitudinal telescopic rod is connected with the loading profile 1, the other end is connected with the transverse displacement applying mechanism 202, also can make the loading profile 1 and the transverse displacement applying mechanism 202 can be relative free longitudinal movement. The same between loading profile 1 and longitudinal displacement applying mechanism 302, can be set up transverse telescopic rod.

[0070] Further, the above-mentioned transverse displacement applying mechanism 202 is as follows:

[0071] The transverse displacement applying mechanism 202 includes a transverse positioning guide rail 2021 fixedly installed on the profile frame 4, a transverse positioning slider 2022 in sliding connection with the transverse positioning guide rail 2021, a longitudinally arranged transverse displacement guide rail 2024 fixedly connected with the transverse positioning slider 2022 through a first adapter plate 2023, a transverse displacement slider 2025 in sliding connection with the transverse displacement guide rail 2024, and a transverse loading rocker arm 2026 in rotational connection with the transverse displacement slider 2025.

[0072] Among them, the longitudinal absorption guide rail 2012 is fixedly connected with the first adapter plate 2023 through the first connecting profile 2027, so that the transverse displacement slider 2025, the transverse displacement guide rail 2024, the adapter plate, the transverse positioning slider 2022, the longitudinal displacement absorbing mechanism 201 and the loading profile 1 can move synchronously along the transverse positioning guide rail 2021, to conduct the transverse displacement to the longitudinal absorption guide rail 2012 and the loading profile 1, so that the loading profile 1 performs transverse simple harmonic motion.

[0073] The cooperation between the loading profile 1 and the transverse loading rocker arm 2026 and each guide rail and each slider can convert the circumferential rotation of the transverse loading rocker arm 2026 in the plane into the transverse simple harmonic motion of the loading profile 1.

[0074] It can be understood that the transverse displacement applying mechanism 202 can be directly replaced by a transverse telescopic rod, the movable end of the transverse telescopic rod is fixedly connected with the longitudinal absorption guide rail 2012, and the loading profile 1 performs transverse simple harmonic motion through the reciprocating extension and contraction of the telescopic rod.

[0075] Further, the above-mentioned longitudinal displacement applying mechanism 302 is as follows:

[0076] The longitudinal displacement applying mechanism 302 comprises a longitudinal positioning guide rail 3021 fixedly mounted on the profile frame 4, a longitudinal positioning sliding block 3022 in sliding connection with the longitudinal positioning guide rail 3021, a transversely arranged longitudinal displacement guide rail 3024 fixedly connected with the longitudinal positioning sliding block 3022 through a second adapter plate 3023, a longitudinal displacement sliding block 3025 in sliding connection with the longitudinal displacement guide rail 3024, and a longitudinal loading rocker arm 3026 in rotational connection with the longitudinal displacement sliding block 3025.

[0077] The transverse displacement absorbing mechanism 301 is fixedly connected with the second adapter plate 3023 through a second connecting profile 3027, so that the longitudinal displacement sliding block 3025, the longitudinal displacement guide rail 3024, the adapter plate, the longitudinal positioning sliding block 3022, the transverse displacement absorbing mechanism 301 and the loading profile 1 can move synchronously along the longitudinal positioning guide rail 3021 to conduct the longitudinal displacement to the transverse displacement absorbing mechanism and the loading profile 1, so that the loading profile 1 performs a longitudinal simple harmonic motion.

[0078] The longitudinal displacement applying mechanism 302 comprises a longitudinal positioning guide rail 3021 fixedly mounted on the profile frame 4, a longitudinal positioning sliding block 3022 in sliding connection with the longitudinal positioning guide rail 3021, a transversely arranged longitudinal displacement guide rail 3024 fixedly connected with the longitudinal positioning sliding block 3022 through a second adapter plate 3023, a longitudinal displacement sliding block 3025 in sliding connection with the longitudinal displacement guide rail 3024, and a longitudinal loading rocker arm 3026 in rotational connection with the longitudinal displacement sliding block 3025.

[0079] It can be understood that the longitudinal displacement applying mechanism 302 can also be replaced by a longitudinal telescopic rod, the movable end of the longitudinal telescopic rod is fixedly connected with the transverse displacement absorbing guide rail 3012, and the telescopic rod is reciprocated to make the loading profile 1 perform a longitudinal simple harmonic motion.

[0080] In addition, it should be noted that if the loading rocker arm is used, the rotational connection mode of the transverse loading rocker arm 2026 and the transverse displacement sliding block 2025 is the same as that of the longitudinal loading rocker arm 3026 and the longitudinal displacement sliding block 3025. Taking the transverse loading rocker arm 2026 as an example, the specific connection mode is as follows:

[0081] The transverse loading rocker arm 2026 is fixedly connected with a first bearing seat 2028, the transverse displacement sliding block 2025 is fixedly connected with a second bearing seat 2029, and the first bearing seat 2028 is in rotational connection with the second bearing seat 2029.

[0082] Further, a plurality of groups of mounting holes 2030 are arranged on the transverse loading rocker arm 2026 and the longitudinal loading rocker arm 3026 along the length direction thereof, which can adjust the mounting position of the first bearing seat 2028 to adjust the amplitude of the simple harmonic motion of the loading profile 1.

[0083] The transverse loading rocker arm 2026 and the longitudinal loading rocker arm 3026 are driven to rotate by a motor and a speed reducer.

[0084] In addition, it should be noted that although the longitudinal telescopic rod can be used to replace the longitudinal displacement applying mechanism 302, and the transverse telescopic rod can be used to replace the transverse displacement applying mechanism 202. However, since the simple harmonic motion is not uniform motion, the speed is constantly changing, and therefore, if the telescopic rod is directly used, the telescopic speed changing problem will be involved, and the present application can cooperate the motor, the speed reducer and the loading rocker arm, and the motor only needs to rotate at a constant speed, on the one hand, it is easier to control, and on the other hand, the record of the simple harmonic motion can be more accurate.

[0085] The present application further provides a test method for simulating the mooring chain loading of a laboratory floating platform, and the test device is used, the motion period of the transverse loading mechanism 2 and the longitudinal loading mechanism 3 and the motion distance of the transverse loading mechanism 2 and the longitudinal loading mechanism 3 are adjusted, so that the loading profile 1 can perform the simple harmonic motion with the same period and the bucket amplitude, the simple harmonic motion with the same period but different amplitudes, the simple harmonic motion with different periods but the same amplitude, or the simple harmonic motion with different periods and different amplitudes in two dimensions.

[0086] The above examples are only exemplary embodiments of the present application, and are not used to limit the present application, and the protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements should also be considered to fall within the protection scope of the present application.

Claims

1. A test apparatus for laboratory simulation of the loading of a mooring chain by a floating platform, characterized in that, The device comprises: a loading profile (1) and a transverse loading mechanism (2) and a longitudinal loading mechanism (3) arranged on both sides of the loading profile (1); the transverse loading mechanism (2) can make the loading profile (1) do transverse simple harmonic motion, the longitudinal loading mechanism (3) can make the loading profile (1) do longitudinal simple harmonic motion, the transverse loading mechanism (2) can absorb the longitudinal simple harmonic motion of the loading profile (1), and the longitudinal loading mechanism (3) can absorb the transverse simple harmonic motion of the loading profile (1), so that the two-dimensional motion can be coupled on the loading profile (1); the transverse loading mechanism (2) comprises a longitudinal displacement absorbing mechanism (201) installed on the loading profile (1) and used for absorbing the longitudinal simple harmonic motion of the loading profile (1); the longitudinal displacement absorbing mechanism (201) is connected with a transverse displacement applying mechanism (202) away from one side of the loading profile (1), the transverse displacement applying mechanism (202) is used for applying reciprocating transverse push-pull force to the loading profile (1), and the loading profile (1) does transverse simple harmonic motion; the longitudinal loading mechanism (3) comprises a transverse displacement absorbing mechanism (301) installed on the loading profile (1) and used for absorbing the transverse simple harmonic motion of the loading profile (1); the transverse displacement absorbing mechanism (301) is connected with a longitudinal displacement applying mechanism (302) away from one side of the loading profile (1), the longitudinal displacement applying mechanism (302) is used for applying reciprocating longitudinal push-pull force to the loading profile (1), and the loading profile (1) does longitudinal simple harmonic motion.

2. The device according to claim 1, wherein the longitudinal displacement absorbing mechanism (201) comprises a longitudinal absorbing sliding block (2011) fixedly installed on the loading profile (1) and a longitudinal absorbing guide rail (2012) in sliding connection with the longitudinal absorbing sliding block (2011), and the transverse displacement applying mechanism (202) is connected with the longitudinal absorbing guide rail (2012); the transverse displacement absorbing mechanism (301) comprises a transverse absorbing sliding block (3011) fixedly installed on the loading profile (1) and a transverse absorbing guide rail (3012) in sliding connection with the transverse absorbing sliding block (3011), and the longitudinal displacement applying mechanism (302) is connected with the transverse absorbing guide rail (3012).

3. The device according to claim 2, wherein The transverse displacement applying mechanism (202) comprises a transverse positioning guide rail (2021) fixedly installed on the profile frame (4), a transverse positioning sliding block (2022) in sliding connection with the transverse positioning guide rail (2021), a longitudinally arranged transverse displacement guide rail (2024) fixedly connected with the transverse positioning sliding block (2022) through a first adapter plate (2023), a transverse displacement sliding block (2025) in sliding connection with the transverse displacement guide rail (2024), and a transverse loading rocker arm (2026) in rotational connection with the transverse displacement sliding block (2025); The transverse displacement applying mechanism (202) comprises a transverse positioning guide rail (2021) fixedly installed on the profile frame (4), a transverse positioning sliding block (2022) in sliding connection with the transverse positioning guide rail (2021), a longitudinally arranged transverse displacement guide rail (2024) fixedly connected with the transverse positioning sliding block (2022) through a first adapter plate (2023), a transverse displacement sliding block (2025) in sliding connection with the transverse displacement guide rail (2024), and a transverse loading rocker arm (2026) in rotational connection with the transverse displacement sliding block (2025); The transverse displacement applying mechanism (202) comprises a transverse positioning guide rail (2021) fixedly installed on the profile frame (4), a transverse positioning sliding block (2022) in sliding connection with the transverse positioning guide rail (2021), a longitudinally arranged transverse displacement guide rail (2024) fixedly connected with the transverse positioning sliding block (2022) through a first adapter plate (2023), a transverse displacement sliding block (2025) in sliding connection with the transverse displacement guide rail (2024), and a transverse loading rocker arm (2026) in rotational connection with the transverse displacement sliding block (2025); The transverse displacement applying mechanism (202) comprises a transverse positioning guide rail (2021) fixedly installed on the profile frame (4), a transverse positioning sliding block (2022) in sliding connection with the transverse positioning guide rail (2021), a longitudinally arranged transverse displacement guide rail (2024) fixedly connected with the transverse positioning sliding block (2022) through a first adapter plate (2023), a transverse displacement sliding block (2025) in sliding connection with the transverse displacement guide rail (2024), and a transverse loading rocker arm (2026) in rotational connection with the transverse displacement sliding block (2025); The transverse displacement applying mechanism (202) comprises a transverse positioning guide rail (2021) fixedly installed on the profile frame (4), a transverse positioning sliding block (2022) in sliding connection with the transverse positioning guide rail (2021), a longitudinally arranged transverse displacement guide rail (2024) fixedly connected with the transverse positioning sliding block (2022) through a first adapter plate (2023), a transverse displacement sliding block (2025) in sliding connection with the transverse displacement guide rail (2024), and a transverse loading rocker arm (2026) in rotational connection with the transverse displacement sliding block (2025); The transverse displacement applying mechanism (202) comprises a transverse positioning guide rail (2021) fixedly installed on the profile frame (4), a transverse positioning sliding block (2022) in sliding connection with the transverse positioning guide rail (2021), a longitudinally arranged transverse displacement guide rail (2024) fixedly connected with the transverse positioning sliding block (2022) through a first adapter plate (2023), a transverse displacement sliding block (2025) in sliding connection with the transverse displacement guide rail (2024), and a transverse loading rocker arm (2026) in rotational connection with the transverse displacement sliding block (2025); The transverse displacement applying mechanism (202) comprises a transverse positioning guide rail (2021) fixedly installed on the profile frame (4), a transverse positioning sliding block (2022) in sliding connection with the transverse positioning guide rail (2021), a longitudinally arranged transverse displacement guide rail (2024) fixedly connected with the transverse positioning sliding block (2022) through a first adapter plate (2023), a transverse displacement sliding block (2025) in sliding connection with the transverse displacement guide rail (2024), and a transverse loading rocker arm (2026) in rotational connection with the transverse displacement sliding block (2025); The transverse displacement applying mechanism (202) comprises a transverse positioning guide rail (2021) fixedly installed on the profile frame (4), a transverse positioning sliding block (2022) in sliding connection with the transverse positioning guide rail (2021), a longitudinally arranged transverse displacement guide rail (2024) fixedly connected with the transverse positioning sliding block (2022) through a first adapter plate (2023), a transverse displacement sliding block (2025) in sliding connection with the transverse displacement guide rail (2024), and a transverse loading rocker arm (2026) in rotational connection with the transverse displacement sliding block (2025); The transverse displacement applying mechanism (202) comprises a transverse positioning guide rail (2021) fixedly installed on the profile frame (4), a transverse positioning sliding block (2022) in sliding connection with the transverse positioning guide rail (2021), a longitudinally arranged transverse displacement guide rail (2024) fixedly connected with the transverse positioning sliding block (2022) through a first adapter plate (2023), a transverse displacement sliding block (2025) in sliding connection with the transverse displacement guide rail (2024), and a transverse loading rocker arm (2026) in rotational connection with the transverse displacement sliding block (2025); ​ 6. The test device for simulating the mooring chain loading of a floating platform in a laboratory according to claim 5, characterized in that, a plurality of sets of mounting holes (2030) are arranged along the length direction of the transverse loading rocker (2026) and the longitudinal loading rocker (3026), which can adjust the mounting position of the first bearing seat (2028) to adjust the amplitude of the simple harmonic motion of the loading profile (1).

7. A test method for simulating the mooring chain loading of a floating platform in a laboratory, characterized in that, using the test device of claim 1, adjusting the motion period of the transverse loading mechanism (2) and the longitudinal loading mechanism (3) and the motion distance of the transverse loading mechanism (2) and the longitudinal loading mechanism (3) can make the loading profile (1) perform simple harmonic motion with the same period and bucket amplitude, simple harmonic motion with the same period but different amplitudes, simple harmonic motion with different periods but the same amplitude, or simple harmonic motion with different periods and different amplitudes in two dimensions.

Images