Anchoring force test device and floating platform simulation method thereof

Abstract

The invention discloses an anchoring force testing device and a method for simulating a floating platform by using the anchoring force testing device. The anchoring force test device simulates the interaction relationship between the floating platform and the anchor through the loading device and the guiding device, is used for the anchoring performance test of the anchor, can more accurately test the performance parameters of the anchor, and improves the design availability of the anchor. According to the method for simulating the floating platform by using the anchoring force test device, the conditions that the floating platform floats under the influence of waves and ocean currents and pullout force is applied to a ship anchor can be simulated, and the conditions comprise four conditions, namely an invariant drawing force direction, a variable drawing force invariant drawing force direction, an invariant drawing force variable drawing force direction and a variable drawing force variable drawing force direction; and the anchoring condition of the anchor under the influence of the floating platform can be accurately reflected.

Description

Technical Field

[0001] The present invention relates to the technical field of test equipment, and particularly relates to an anchoring force test device and a method for simulating a floating platform using the anchoring force test device. Background Art

[0002] When a ship is operating, it needs to use an anchor for anchoring to achieve the purpose of staying in a designated sea area or at a designated depth. Anchors include gravity anchors, drag anchors, special anchors, etc. When an anchor is anchored, one end is buried in the seabed, and the other end is connected to a floating body (such as a ship, an offshore platform, etc.) through a mooring cable. In real sea conditions, the floating body will be affected by waves and ocean currents, resulting in horizontal and vertical movements, and transmitting a pulling-out force to the anchor through the mooring cable. The pulling-out force received by the anchor is affected by multiple factors such as waves, ocean currents, gravity, and the dynamics of the floating body. The direction of the force is along the XYZ three axes, and the magnitude of the force changes irregularly, which is a multi-coupled non-linear problem. Due to the limitations of physical conditions in the real environment, only specific stress conditions of the anchor can be simulated. The limitations of the test environment require a large design margin when designing the anchor, which is not conducive to designing an anchor that better suits the use of the floating platform. Summary of the Invention

[0003] To improve the above technical problems, a first aspect of the technical solution of the present invention provides an anchoring force test device capable of simulating a floating platform applying a pulling-out force to an anchor, which is used to simulate the stress conditions of the anchor underwater, including the changes in the direction and magnitude of the pulling-out force.

[0004] An anchoring force test device provided by a technical solution of the present invention, hereinafter referred to as the test device, includes a water tank (1), a loading device (2), a guiding device (3), and a support frame (4). Among them, the water tank (1) includes a tank body (1-1) and a water outlet pipe (1-2); the water outlet pipe (1-2) is provided on the tank body (1-1), and the tank body (1-1) is a cylindrical structure with an open top and a sealed bottom; the tank body (1-1) is provided with a space for accommodating the entire anchor, and can store a water medium and a bottom medium simulating the seabed, and the water outlet pipe (1-2) is used for emptying the tank body; the loading device (2) includes an electric push rod (2-1), a protruding shaft (2-2), and a terminal ring (2-3), one end of the protruding shaft (2-2) is connected to the electric push rod (2-1), and is adapted to perform telescopic movement relative to the electric push rod (2-1), the electric push rod (2-1) is used to drive the protruding shaft (2-2) to move, and the terminal ring (2-3) is provided at the other end of the protruding shaft (2-2); the guiding device (3) includes two longitudinal guide rails (3-1, 3-2), a transverse guide rail (3-3), a hanging ring (3-4), two first moving sliders (3-5), and a second moving slider (3-6); the electric push rod (2-1) is connected to the support frame (4), the two longitudinal guide rails (3-1, 3-2) are connected to the support frame (4), and the height positions of the two longitudinal guide rails (3-1, 3-2) are both higher than the height position of the open top of the water tank (1), and are arranged on both sides in the radial direction of the water tank (1), each longitudinal guide rail is provided with a first moving slider (3-5), the first moving slider (3-5) is slidably connected to the corresponding longitudinal guide rail, the transverse guide rail (3-3) is straddled on the two first moving sliders (3-5), the second moving slider (3-6) is slidably connected to the transverse guide rail (3-3), and the hanging ring (3-4) is connected to the second moving slider (3-6); the terminal ring (2-3) is used for one end of the cable, and after the other end of the cable passes through the hanging ring (3-4), it is used to connect to the anchor; the electric push rod (2-1) is used to provide a pulling force applied to the anchor, and by controlling the movement of the protruding shaft (2-2), the magnitude of the pulling force is adjusted, and the first moving slider (3-5) and the second moving slider (3-6) are used to adjust the application direction of the pulling force on the anchor by moving; a tensiometer is provided on the cable for obtaining the value of the pulling force.

[0005] In the above technical solution, the tank body (1-1) is made of fiberglass, and the outer wall of the tank body (1-1) is coated with a plastic film.

[0006] In the above technical solution, the electric push rod (2-1) includes a motor, a cylinder body, a lead screw, and a push rod; the lead screw is arranged in the cylinder body and is screwed to the output shaft of the motor for converting the rotational movement of the output shaft of the motor into a linear movement, and one end of the protruding shaft (2-2) penetrates into the cylinder body and is connected to the lead screw, and can perform telescopic movement relative to the cylinder body.

[0007] In the above technical solution, the extending direction of the extending shaft (2-2) is perpendicular to the plane where the top opening of the box body (1-1) is located, so as to drive the extending shaft (2-2) to expand and contract in a direction perpendicular to the plane where the top opening of the box body (1-1) is located; the extending directions of the two longitudinal guide rails (3-1, 3-2) are both parallel to the plane where the top opening of the box body (1-1) is located; the extending direction of the transverse guide rail (3-3) is parallel to the plane where the top opening of the box body (1-1) is located.

[0008] In the above technical solution, the support frame (4) includes 4 legs and a rectangular frame; one ends of the 4 legs are respectively connected to the four corner positions of the rectangular frame in one-to-one correspondence, so that the height position of the rectangular frame is higher than the height position of the top opening of the water tank (1); the electric push rod (2-1) is connected to one of the legs; the two longitudinal guide rails (3-1, 3-2) are respectively arranged on two opposite side frames of the rectangular frame.

[0009] In the above technical solution, the anchoring force test device further includes: a controller and three driving devices; two of the three driving devices are respectively connected to the two first moving sliders (3-5) in one-to-one correspondence, and the remaining one of the three driving devices is connected to the second moving slider (3-6), and the driving device is used to drive the connected moving slider to slide; the controller is respectively connected to the electric push rod (2-1) and the three driving devices, and is used to control the electric push rod (2-1) and the three driving devices to work.

[0010] Further, limiters are provided at both ends of the two longitudinal guide rails (3-1, 3-2) and the transverse guide rail (3-3); each limiter is connected to the controller, and the limiter is used to send a stop signal to the controller when it comes into contact with the moving slider on the corresponding guide rail, so that the controller controls the corresponding driving device to stop working or output power in the reverse direction.

[0011] Further, the two driving devices among the three driving devices that are respectively connected to the two first moving sliders (3-5) in one-to-one correspondence are configured to receive synchronous control by the controller.

[0012] Among them, the driving device is a device such as a motor. Preferably, the driving device is a variable frequency motor.

[0013] The technical solution of the second aspect of the present invention provides a method for simulating a floating platform using an anchoring force test device, which is used to simulate the situation where the floating platform floats under the influence of waves and ocean currents and applies a pulling force to the ship anchor to test the performance of the ship anchor.

[0014] A method for simulating a floating platform using an anchoring force test device provided by a technical solution of the present invention, hereinafter referred to as the simulation method, includes the following steps:

[0015] Step S1, adjust the positional relationship between the extension shaft (2-2) and the electric push rod (2-1) so that the extension shaft (2-2) can perform telescopic movement, and set the hanging ring (3-4) directly above the middle of the water tank (1);

[0016] Step S2, load the bottom medium simulating the seabed into the box body (1-1), then bury the anchor in the bottom medium, install the cable on the anchoring force test device and tie it to the anchor; arrange a tensiometer on the cable to monitor the magnitude of the pulling force and make the cable in a slack state about to be taut; wherein, the tensiometer obtains the value of the pulling force in real time: fill the box body (1-1) with water medium;

[0017] Step S3, gradually control the contraction of the extension shaft (2-2) to tighten the cable and prepare to apply a pulling force to the anchor;

[0018] Step S4, according to the instruction, control the guiding device (3) to work to simulate the static state or movement of the floating platform, and control the telescopic movement of the extension shaft (2-2) during the simulation to change the magnitude of the pulling force until the anchor is pulled out;

[0019] Step S5, in response to the anchor being pulled out, keep the loading device (2) and the guiding device (3) stationary.

[0020] In the above technical solution, Step S4 includes:

[0021] For the case where the instruction is to simulate the static state of the floating platform and apply a pulling force with a constant magnitude and a constant direction to the anchor, maintain the value of the pulling force at a predetermined value; wherein, when the detected value of the pulling force is less than the fixed predetermined value, control the extension shaft (2-2) to move away from the guiding device (3), and when the detected value of the pulling force is greater than the fixed predetermined value, control the extension shaft (2-2) to move closer to the guiding device (3);

[0022] For the case where the instruction is to simulate the movement of the floating platform and apply a pulling force with a variable magnitude and a constant direction to the anchor, control the extension shaft (2-2) to move closer to or away from the guiding device (3) to change the magnitude of the pulling force and keep the guiding device (3) stationary to keep the direction of the pulling force unchanged;

[0023] For the case where the instruction is to simulate the movement of the floating platform and apply a pulling force with a constant magnitude and a variable direction to the anchor, control the sliding of the two first moving sliders (3-5) and / or the second moving slider (3-6) to change the position of the hanging ring (3-4) relative to the box body (1-1); wherein, when the detected value of the pulling force is less than the fixed predetermined value, control the extension shaft (2-2) to move away from the guiding device (3), and when the detected value of the pulling force is greater than the fixed predetermined value, control the extension shaft (2-2) to move closer to the guiding device (3);

[0024] For the case where the instruction is to simulate the movement of a floating platform and apply a variable force and variable direction pulling force to the anchor, control the sliding of the two first moving sliders (3-5) and / or the second moving slider (3-6) to change the position of the hanging ring (3-4) relative to the box body (1-1); wherein, when the detected pulling force value is less than the variable force preset value, control the extension shaft (2-2) to move away from the guiding device (3), and when the detected pulling force value is greater than the variable force preset value, control the extension shaft (2-2) to move closer to the guiding device (3); wherein, the variable force preset value is a preset value that changes linearly over time.

[0025] Wherein, the floating platform is a platform structure such as a ship or a buoy that can float on the water surface.

[0026] In summary, the anchoring force test device provided by the present invention and the method of using the anchoring force test device to simulate a floating platform can at least have the following beneficial effects:

[0027] (1) By simulating the situation where a floating platform floats under the influence of waves and ocean currents and applies a pulling force to the ship anchor, the present invention can test the anchoring force performance of the ship anchor, so as to improve the current situation that the previous anchoring force test equipment cannot simulate the stress situation of ships.

[0028] (2) By setting up the anchoring force test device, the limitations of the test environment can be avoided, and the test process can be set as needed. It is not only limited to simulating the static or moving situation of the floating platform, but also has a variety of simulation methods, including changing the magnitude and direction of the applied pulling force.

[0029] (3) The anchoring force test device provided by the present invention can be applied to various ship anchors, has a wide application range and high utilization rate. Compared with full-scale ship tests, it has high test efficiency, low cost and low labor intensity of personnel.

[0030] (4) By using the method of using the anchoring force test device to simulate a floating platform, the present invention can conduct simulation tests under multiple angles and different pulling force magnitudes, can accurately evaluate the performance of the ship anchor itself, and helps to discover ship anchor defects before actual use for optimization.

[0031] (5) By setting a driving device for controlling the movement speed of the moving slider (including the first moving slider and the second moving slider), the movement mode of the floating platform in a windy and wavy environment can be simulated. By only controlling the first moving slider or the second moving slider, the linear movement of the floating platform can be simulated. By simultaneously controlling the first moving slider or the second moving slider, the turning movement of the floating platform can be simulated. In addition, by changing the movement speed of the moving slider, the movement of the floating platform in various working conditions or environments can be simulated. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a perspective view of the anchoring force test device in an embodiment of the present invention;

[0033] Figure 2 is a front view of the anchoring force test device in an embodiment of the present invention;

[0034] Figure 3 is a side view of the anchoring force test device in an embodiment of the present invention.

[0035] The reference numerals in the figure are: water tank (1), loading device (2), guiding device (3), support frame (4), box body (1-1), water outlet pipe (1-2), electric push rod (2-1), extending shaft (2-2), end ring (2-3), longitudinal guide rails (3-1, 3-2), transverse guide rail (3-3), hanging ring (3-4), first moving slide (3-5), second moving slide (3-6). Detailed implementation manners

[0036] Next, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] Some embodiments of the present invention provide an anchoring force test device. It is used for the anchoring force test of an anchor, simulating the floating of a floating platform in water and applying variable force and variable direction anchoring force to the anchor.

[0038] As Figures 1 - 3 shown, the anchoring force test device in this embodiment includes a water tank (1), a loading device (2), a guiding device (3), and a support frame (4). The water tank (1) is a cylindrical barrel with an open upper end, and is composed of a box body (1-1) and a water outlet pipe (1-2). The loading device (2) is an electric push rod, including an electric push rod (2-1), an extending shaft (2-2), and an end ring (2-3). The guiding device is a module composed of 3 electric push rods and guide rails, including longitudinal guide rails (3-1) and (3-2), a transverse guide rail (3-3), a hanging ring (3-4), a moving slide (3-5) of the longitudinal guide rail, and a moving slide (3-6) of the transverse guide rail.

[0039] In some specific embodiments, the box body (1-1) of the water tank (1) is a cylindrical barrel made of fiberglass. When installing, a cement base should be poured at the lower part of the water tank (1), and the outer wall of its box body (1-1) should be coated with a plastic film to delay the aging of the fiberglass.

[0040] In some specific embodiments, the loading device (2) is fixed to the support frame (4) by welding.

[0041] In some specific embodiments, the extension shaft (2-2) of the loading device and the end ring (2-3) are connected by welding.

[0042] In some specific embodiments, the loading device (2) is an electric push rod, and the extension shaft (2-2) is controlled by a motor to extend and retract.

[0043] In some specific embodiments, the longitudinal guide rails (3-1) and (3-2) of the guiding device (3) are connected to the support frame (4) by bolts.

[0044] In some specific embodiments, the longitudinal guide rails (3-1) and (3-2) of the guiding device (3) need to be synchronously controlled without displacement deviation.

[0045] In some specific embodiments, the extension shaft (2-2), the longitudinal guide rails (3-1), (3-2) and the transverse guide rail (3-3) of the guiding device (3) are all controlled by a motor to rotate the pulley, and a limiter is installed on the guide rail.

[0046] In some specific embodiments, the transverse guide rail (3-3) of the extension shaft (2-2) is installed on two moving slides (3-5) on the longitudinal guide rails (3-1) and (3-2) by bolts.

[0047] In some specific embodiments, the hanging ring (3-4) is installed on a moving slide (3-6) on the transverse guide rail (3-3) by bolts.

[0048] In some specific embodiments, the support frame (4) is installed on the cement base poured at the lower part of the water tank (1) by anchor bolts.

[0049] In some specific embodiments, the cable is laid in such a way that one end is tied to the end ring (2-3) of the loading device (2), passes through the hanging ring (3-4), and is tied to the end of the anchor downward. The form of the anchor is not fixed.

[0050] In some specific embodiments, the water tank (1) is filled with a bottom medium simulating the seabed. The type of the bottom medium is determined according to the test content. Clear water is poured into the upper end of the bottom medium. The clear water is poured from the upper end of the water tank (1) and discharged from the water outlet pipe (1-2) when not in use, and the water outlet pipe (1-2) is closed when in use.

[0051] Some other embodiments of the present invention provide a method for simulating a floating platform using an anchoring force test device, which is used to simulate the floating of the floating platform affected by waves and ocean currents and apply a pulling force to the anchor through the loading device (2) and the guiding device (3). The method for simulating the floating platform is as follows:

[0052] a. Extend the output shaft (2-2) by half of its length, and the hanging ring (3-4) is directly above the middle of the water tank (1).

[0053] b. Install the anchor and the cable, arrange a tensiometer on the cable to monitor the magnitude of the pulling force, and the cable is in a slack state on the verge of being taut.

[0054] c. Shorten the telescopic shaft (2-2) to tighten the cable and apply a pulling force to the anchor.

[0055] d. When simulating the floating platform at rest and applying a pulling force with a constant magnitude and direction to the anchor, maintain the value of the pulling force at a predetermined value. When the value of the pulling force is less than the predetermined value, shorten the telescopic shaft; when the value of the pulling force is greater than the predetermined value, extend the telescopic shaft.

[0056] e. When simulating the movement of the floating platform and applying a pulling force with a variable magnitude and a constant direction to the anchor, change the magnitude of the pulling force by shortening and extending the telescopic shaft, and do not move the guiding device (3) to keep the direction of the pulling force unchanged.

[0057] f. When simulating the movement of the floating platform and applying a pulling force with a constant magnitude and a variable direction to the anchor, change the positions of the sliding rails of the longitudinal guide rails (3-1) and (3-2) and the transverse guide rail (3-3) of the guiding device (3) to change the direction of the pulling force. Since the cable is a rigid cable, when the position of the hanging ring (3-4) changes, the length of the cable changes accordingly, which will cause a change in the pulling force. Follow-up change the extension length of the telescopic shaft (2-2). When the value of the pulling force is less than the predetermined value, shorten the telescopic shaft; when the value of the pulling force is greater than the predetermined value, extend the telescopic shaft.

[0058] g. When simulating the movement of the floating platform and applying a pulling force with a variable magnitude and a variable direction to the anchor, change the positions of the sliding rails of the longitudinal guide rails (3-1) and (3-2) and the transverse guide rail (3-3) of the guiding device (3) to change the direction of the pulling force. Since the cable is a rigid cable, when the position of the hanging ring (3-4) changes, the length of the cable changes accordingly, which will cause a change in the pulling force. Follow-up change the extension length of the telescopic shaft (2-2). When the value of the pulling force is less than the predetermined value of the variable force, shorten the telescopic shaft; when the value of the pulling force is greater than the predetermined value of the variable force, extend the telescopic shaft.

[0059] h. When the anchor is pulled out, stop the loading device (2) and the guiding device (3) in time

[0060] Among them, it should be noted that steps d, e, f, and g can be combined or used separately according to instructions.

[0061] In summary, the anchoring force test device provided by the present invention simulates the interaction relationship between the floating platform and the anchor through the loading device (2) and the guiding device (3), and is used for the anchoring performance test of the anchor, which can more accurately test the performance parameters of the anchor and improve the design usability of the anchor. The method of using the anchoring force test device to simulate the floating platform can simulate the situation where the floating platform floats under the influence of waves and ocean currents and applies a pulling force to the ship anchor, including four situations: constant pulling force and constant pulling force direction, variable pulling force and constant pulling force direction, constant pulling force and variable pulling force direction, and variable pulling force and variable pulling force direction, which can accurately reflect the anchoring situation of the anchor when affected by the floating platform.

[0062] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0063] In the description of this specification, the specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0064] Of course, the present invention can also have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these changes and deformations should all fall within the protection scope of the claims of the present invention.

Claims

1. An anchoring force test device, characterized in that: Used to measure the anchoring force of an anchor, comprising: a water tank (1), a loading device (2), a guide device (3) and a supporting frame (4); The water tank (1) comprises a tank body (1-1) and a water outlet pipe (1-2); the water outlet pipe (1-2) is arranged on the tank body (1-1); the tank body (1-1) is a cylindrical structure with an open top and a sealed bottom; the tank body (1-1) is provided with a space for accommodating the entire anchor and is capable of storing water medium and bottom medium simulating the seabed; the water outlet pipe (1-2) is used for emptying the tank body; The loading device (2) comprises an electric push rod (2-1), an extension shaft (2-2) and an end ring (2-3); one end of the extension shaft (2-2) is connected to the electric push rod (2-1) and is suitable for performing telescopic movement relative to the electric push rod (2-1); the electric push rod (2-1) is used to drive the extension shaft (2-2) to move; and the end ring (2-3) is arranged at the other end of the extension shaft (2-2); The guide device (3) comprises two longitudinal guide rails (3-1, 3-2), a transverse guide rail (3-3), a mounting ring (3-4), two first movable slides (3-5) and a second movable slide (3-6); the electric push rod (2-1) is connected to the support frame (4), the two longitudinal guide rails (3-1, 3-2) are connected to the support frame (4), and the height positions of the two longitudinal guide rails (3-1, 3-2) are higher than the height position of the top opening of the water tank (1), and are arranged on both sides of the radial direction of the water tank (1), each longitudinal guide rail is provided with a first movable slide (3-5), the first movable slide (3-5) is slidably connected to the corresponding longitudinal guide rail, the transverse guide rail (3-3) is straddled on the two first movable slides (3-5), the second movable slide (3-6) is slidably connected to the transverse guide rail (3-3), and the mounting ring (3-4) is connected to the second movable slide (3-6); The end ring (2-3) is used for one end of the cable, and the other end of the cable is connected to the anchor after passing through the mounting ring (3-4); the electric push rod (2-1) is used to provide a pulling force applied to the anchor, and adjust the magnitude of the pulling force by controlling the movement of the extension shaft (2-2); the first movable slide (3-5) and the second movable slide (3-6) are used to adjust the direction of application of the pulling force on the anchor by movement; the cable is provided with a tension meter for obtaining the value of the pulling force.

2. The anchoring force testing device according to claim 1, characterized in that: The box body (1-1) is made of glass fiber reinforced plastics, and the outer wall of the box body (1-1) is covered with a plastic film.

3. The anchoring force testing device according to claim 1, characterized in that: The electric push rod (2-1) comprises a motor, a cylinder body, a lead screw and a push rod; The lead screw is arranged in the cylinder body and is threadedly connected to the output shaft of the motor, and is used to convert the rotational motion of the output shaft of the motor into linear motion. One end of the extension shaft (2-2) penetrates into the cylinder body and is connected to the lead screw, and can perform telescopic motion relative to the cylinder body.

4. The anchoring force testing device according to claim 1, characterized in that: The extending direction of the extending shaft (2-2) is perpendicular to the plane where the top opening of the box body (1-1) is located, so as to drive the extending shaft (2-2) to extend and retract along a direction perpendicular to the plane where the top opening of the box body (1-1) is located; The extension directions of the two longitudinal guide rails (3-1, 3-2) are both parallel to the plane where the top opening of the box body (1-1) is located; The extension direction of the transverse guide rail (3-3) is parallel to the plane where the top opening of the box body (1-1) is located.

5. The anchoring force testing device according to claim 1, characterized in that: The support frame (4) comprises four legs and a rectangular frame; one end of the four legs is connected to the four corners of the rectangular frame in a one-to-one correspondence, so that the height of the rectangular frame is higher than the height of the top opening of the water tank (1); The electric push rod (2-1) is connected to one of the legs; and two longitudinal guide rails (3-1, 3-2) are respectively arranged on two opposite frames of the rectangular frame.

6. The anchoring force testing device according to any one of claims 1 to 3, characterized in that: Also includes: controller, three drive devices; Two of the three driving devices are connected to the two first movable slides (3-5) in a one-to-one correspondence, and the remaining one of the three driving devices is connected to the second movable slide (3-6), and the driving device is used to drive the connected movable slides to slide: The controller is respectively connected to the electric push rod (2-1) and the three driving devices, and is used to control the operation of the electric push rod (2-1) and the three driving devices.

7. The anchoring force testing device according to claim 6, characterized in that: Both ends of the two longitudinal guide rails (3-1, 3-2) and the transverse guide rail (3-3) are provided with limiters; Each limiter is connected to the controller, and the limiter is used to send a stop signal to the controller when it comes into contact with the movable slide on the corresponding guide rail, so that the controller controls the corresponding driving device to stop working or output power in the reverse direction.

8. The anchoring force testing device according to claim 6, characterized in that: Two of the three driving devices, which are respectively connected to the two first movable slides (3-5) in a one-to-one correspondence, are configured to receive synchronous control from the controller.

9. A method for simulating a floating platform using the anchoring force test device according to any one of claims 1 to 8, characterized in that: The steps include: Step S1, adjusting the positional relationship of the extension shaft (2-2) relative to the electric push rod (2-1) so that the extension shaft (2-2) can move telescopically, and arranging the mounting ring (3-4) just above the middle of the water tank (1); Step S2, loading a bottom medium simulating a seabed into the box (1-1), burying an anchor in the bottom medium, installing a cable on an anchoring force test device, and tying it to the anchor; A tension meter is arranged on the cable to monitor the pulling force so that the cable is in a relaxed state about to be tightened; wherein the tension meter obtains the value of the pulling force in real time; and a water medium is poured into the box (1-1); Step S3, gradually controlling the extension shaft (2-2) to retract so as to tighten the cable and prepare to apply a pulling force to the anchor; Step S4, according to the instruction, the guide device (3) is controlled to work to simulate the floating platform being stationary or moving, and during the simulation, the extension shaft (2-2) is controlled to be extended and retracted to change the magnitude of the pulling force until the anchor is pulled out; Step S5, in response to the anchor being pulled out, the loading device (2) and the guiding device (3) are made stationary.

10. The method for simulating a floating platform using an anchoring force test device according to claim 9, characterized in that: The step S4 comprises: When the instruction is to simulate the floating platform being stationary and to apply a pulling force of a constant force and a constant direction to the anchor, the value of the pulling force is maintained at a predetermined value; wherein, when the detected pulling force value is less than a fixed predetermined value, the extension shaft (2-2) is controlled to move in a direction away from the guide device (3); and when the detected pulling force value is greater than the fixed predetermined value, the extension shaft (2-2) is controlled to move in a direction close to the guide device (3); When the instruction is to simulate the movement of the floating platform and apply a pulling force with a variable force and a constant direction to the anchor, the extension shaft (2-2) is controlled to move in a direction close to or away from the guide device (3) to change the magnitude of the pulling force, and the guide device (3) is kept stationary to keep the pulling force direction unchanged; When the instruction is to simulate the movement of a floating platform and to apply a constant force and a pulling force of a variable direction to the anchor, the two first movable slides (3-5) and / or the second movable slides (3-6) are controlled to slide so as to change the position of the mounting ring (3-4) relative to the box (1-1); wherein, when the detected pulling force value is less than a fixed predetermined value, the extending shaft (2-2) is controlled to move in a direction away from the guide device (3); and when the detected pulling force value is greater than the fixed predetermined value, the extending shaft (2-2) is controlled to move in a direction close to the guide device (3); When the instruction is to simulate the movement of a floating platform and apply a pulling force with a variable force and direction to the anchor, the two first movable slides (3-5) and / or the second movable slides (3-6) are controlled to slide so as to change the position of the mounting ring (3-4) relative to the box (1-1); wherein, when the detected pulling force value is less than a preset variable force value, the extending shaft (2-2) is controlled to move in a direction away from the guide device (3); and when the detected pulling force value is greater than the preset variable force value, the extending shaft (2-2) is controlled to move in a direction close to the guide device (3); wherein the preset variable force value is a preset value that changes linearly with time.

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