Model test device for studying penetration process of towing anchor in soil bed

Abstract

The utility model belongs to the technical field of ocean engineering, and discloses a model test device for studying the penetration process of a towing anchor in a soil bed, which comprises a test box, one end in the test box is rotatably connected with a wind-up roll, the upper end and the lower end of the side wall of the other end are both fixedly provided with fixing blocks, and a threaded rod is rotatably connected between the two fixing blocks. A lifting block is in threaded connection with the threaded rod, a first fixed pulley is fixed to the lifting block, and a second fixed pulley is fixed to the fixed block at the upper end; the test soil sample is laid at the bottom of the test box; one end of the first rope is fixedly provided with a towing anchor model, the towing anchor model is placed on the test soil sample, the other end of the first rope bypasses the first fixed pulley and the second fixed pulley and is fixed with the tension sensor, the other end of the tension sensor is fixedly provided with a second rope, and the other end of the second rope is wound on the winding roller. Analysis and research are carried out by collecting the angle of the dragged posture of the dragging anchor in the penetration process and the dragging bearing capacity.

Description

Technical Field

[0001] This utility model belongs to the field of marine engineering technology, specifically relating to a model test device for studying the penetration process of towed anchors in a soil bed. Background Technology

[0002] Currently, the development of offshore wind power is showing a trend from near-shore and shallow waters to deep-sea areas, and from fixed to floating systems. Towed anchors are a type of anchorage suitable for deep-water mooring systems on floating foundations of offshore wind turbines. They offer advantages such as low manufacturing cost, fewer vessels required for installation, and high load-bearing efficiency. Existing research indicates that the angle of the towed anchor's towing posture during insertion has a significant impact on its final load-bearing capacity; the relationship between the towing posture and the anchorage load-bearing capacity during insertion is crucial for evaluating the load-bearing performance of towed anchors.

[0003] Therefore, in order to study the motion and stress state of the dragging anchor during the entire continuous penetration process, it is of great significance to conduct model tests on the dragging anchor penetration process based on domestic and foreign research. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a model test device for studying the penetration process of a towed anchor in a soil bed, thus solving the research problem in the prior art regarding the angle of the towed anchor's dragged posture during the penetration process and its ultimate bearing capacity.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A model test apparatus for studying the penetration process of a towed anchor in a soil bed includes:

[0007] The test chamber has a take-up roller rotatably connected to one end of its interior, and fixed blocks are fixedly connected to the upper and lower ends of the side wall of the other end. A threaded rod is rotatably connected between the two fixed blocks, and a lifting block is threadedly connected to the threaded rod. A first fixed pulley is fixedly connected to the lifting block, and a second fixed pulley is fixedly connected to the upper fixed block.

[0008] The test soil sample is laid at the bottom of the test chamber;

[0009] A first rope, one end of which is fixedly connected to a towing anchor model placed on the test soil sample, the other end of which passes over a first and a second fixed pulley and is fixedly connected to a tension sensor, the other end of which is fixedly connected to a second rope, the other end of which is wound around a take-up roller.

[0010] The principles and technical effects of the above technical solution are as follows:

[0011] The test soil sample is laid at the bottom of the test chamber. One end of the second rope is fixed to the winding roller, and one end of the first rope is fixed to the towed anchor model, while the other end is fixed to the tension sensor. The other end of the first rope passes sequentially over the first and second fixed pulleys and is fixed to the tension sensor. The towed anchor model is placed on the test soil sample. By rotating the threaded rod, the lifting block moves up and down, which in turn moves the first fixed pulley up and down, adjusting the angle between the first rope and the test soil sample. By driving the winding roller to rotate, the winding roller winds the second rope. Through the cooperation of the second rope, the first rope, the first fixed pulley, and the second fixed pulley, the towed anchor model is dragged. The dragging force is obtained through the tension sensor. The angle of the dragged posture and the dragging load force of the towed anchor during the penetration process are collected and analyzed.

[0012] In a preferred embodiment, the present invention can be further configured as follows: a ruler plate is fixedly connected to the top of the test chamber, a limiting groove is formed on the ruler plate along its length direction, and a vertically arranged marker is fixedly connected to the first rope between the tension sensor and the second fixed pulley, the marker extending upward through the limiting groove.

[0013] In a preferred embodiment, the present invention can be further configured such that the ruler plate has scale lines along its length.

[0014] In a preferred embodiment, the present invention can be further configured such that: the periphery of the first rope is wrapped with a first connecting buckle and a second connecting buckle, the lower end of the marker is fixedly connected to the first connecting buckle, a plurality of threaded posts are fixedly connected to the first connecting buckle, and the threaded posts pass through the second connecting buckle and are threadedly connected to the fastening nut.

[0015] In a preferred embodiment, the present invention can be further configured such that: a guide plate is provided between the take-up roller and the second fixed pulley and near the take-up roller; both ends of the guide plate are fixedly connected to the inner wall of the test chamber; and a guide hole is provided on the guide plate, through which the second rope passes.

[0016] In a preferred embodiment, the present invention can be further configured such that the line connecting the first rope and the second rope between the guide hole and the second fixed pulley is parallel to the limiting groove.

[0017] In a preferred embodiment, the present invention can be further configured such that a first motor is fixedly connected to the side wall of the outer side of the test chamber, and the output end of the first motor is fixedly connected to the winding roller.

[0018] In a preferred embodiment, the present invention can be further configured such that: a second motor is fixedly connected to the side wall of the outer side of the test chamber, a first bevel gear is fixedly connected to the output end of the second motor, a second bevel gear is fixedly connected to the top end of the threaded rod, and the second bevel gear meshes with the first bevel gear.

[0019] In a preferred embodiment, the present invention can be further configured such that the walls of the test chamber are made of a transparent material.

[0020] In a preferred embodiment, the present invention can be further configured such that: guide rods are slidably connected to both ends of the lifting block, and the two ends of the guide rods are fixedly connected to the fixing block.

[0021] The explanations of the nouns, conjunctions, or adjectives used in the above technical solutions are as follows:

[0022] A fixed connection refers to a connection in which parts or components are fixed in place, with no relative movement between them. These connections are divided into two types: detachable and non-detachable.

[0023] (1) Detachable connections use screws, splines, wedges, etc. to fix parts together. This type of connection can be disassembled during maintenance without damaging the parts. However, the specifications of the connecting parts used must be correct (such as the length of bolts, keys, wedges) and properly tightened.

[0024] (2) Non-removable connections mainly refer to welding, riveting, and tenon joints. Since disassembly is required by forging, sawing, or oxy-acetylene cutting during repair or replacement, the parts generally cannot be reused. At the same time, attention should be paid to the process quality, technical inspection, and remedial measures (such as correction, polishing, etc.) when making connections.

[0025] A threaded connection is a detachable connection in which threaded parts (or the threaded portion of the connected parts) are joined together as one unit.

[0026] A sliding connection refers to two objects that are in contact but not fixed, and can slide relative to each other.

[0027] A rotating connection is a connection between parts that allows the parts to rotate relative to each other.

[0028] The beneficial effects of this utility model are:

[0029] The test soil sample is laid at the bottom of the test chamber. One end of the second rope is fixed to the winding roller, and one end of the first rope is fixed to the towed anchor model, while the other end is fixed to the tension sensor. The other end of the first rope passes sequentially over the first and second fixed pulleys and is fixed to the tension sensor. The towed anchor model is placed on the test soil sample. By rotating the threaded rod, the lifting block moves up and down, which in turn moves the first fixed pulley up and down, adjusting the angle between the first rope and the test soil sample. By driving the winding roller to rotate, the winding roller winds the second rope. Through the cooperation of the second rope, the first rope, the first fixed pulley, and the second fixed pulley, the towed anchor model is dragged. The dragging force is obtained through the tension sensor. The angle of the dragged posture and the dragging load force of the towed anchor during the penetration process are collected and analyzed. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0032] Figure 2 This is a schematic diagram of the internal structure of the test chamber according to an embodiment of the present invention;

[0033] Figure 3 This is a partial structural diagram of the lifting block in an embodiment of the present utility model;

[0034] Figure 4 This is a schematic diagram of the structure of the benchmark section in an embodiment of this utility model. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0036] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0037] Based on the concept of this application, combined with Figures 1 to 4 This describes an embodiment of a model test apparatus for studying the penetration process of a towed anchor in a soil bed. Specifically, the model test apparatus for studying the penetration process of a towed anchor in a soil bed is constructed as a split structure. By coordinating the test chamber 1, test soil sample 8, and towing anchor model 10, the test soil sample 8 is laid at the bottom of the test chamber 1. One end of the second rope 12 is fixed to the winding roller 2, and one end of the first rope 9 is fixed to the towing anchor model 10, while the other end is fixed to the tension sensor 11. The other end of the first rope 9 passes sequentially around the first fixed pulley 6 and the second fixed pulley 7 and is fixed to the tension sensor 11. The towing anchor model 10 is placed on the test soil sample 8. By rotating the threaded rod 4, the lifting block 5 moves up and down, which in turn moves the first fixed pulley 6 up and down, adjusting the angle between the first rope 9 and the test soil sample 8. By driving the winding roller 2 to rotate, the winding roller 2 winds the second rope 12. Through the coordination of the second rope 12, the first rope 9, the first fixed pulley 6, and the second fixed pulley 7, the towing anchor model 10 is dragged. The dragging force is obtained through the tension sensor 11. The angle of the dragged posture and the dragging load during the penetration process of the towing anchor are collected and analyzed.

[0038] like Figures 1 to 4 As shown, a model test apparatus for studying the penetration process of a towed anchor in a soil bed includes:

[0039] Test chamber 1, with a winding roller 2 rotatably connected to one end of the test chamber 1, and fixed blocks 3 fixedly connected to the upper and lower ends of the side wall of the other end. A threaded rod 4 is rotatably connected between the two fixed blocks 3, and a lifting block 5 is threadedly connected to the threaded rod 4. A first fixed pulley 6 is fixedly connected to the lifting block 5, and a second fixed pulley 7 is fixedly connected to the upper fixed block 3.

[0040] Test soil sample 8 is laid at the bottom of test chamber 1;

[0041] The first rope 9 has a towing anchor model 10 fixedly connected to one end, which is placed on the test soil sample 8. The other end of the first rope 9 passes over the first fixed pulley 6 and the second fixed pulley 7 and is fixedly connected to the tension sensor 11. The other end of the tension sensor 11 is fixedly connected to the second rope 12, which is wound around the take-up roller 2.

[0042] In use, the test soil sample 8 is laid at the bottom of the test chamber 1. One end of the second rope 12 is fixed to the winding roller 2, and one end of the first rope 9 is fixed to the towing anchor model 10, while the other end is fixed to the tension sensor 11. The other end of the first rope 9 passes sequentially around the first fixed pulley 6 and the second fixed pulley 7 and is fixed to the tension sensor 11. The towing anchor model 10 is placed on the test soil sample 8. By rotating the threaded rod 4, the lifting block 5 moves up and down, which in turn moves the first fixed pulley 6 up and down, adjusting the angle between the first rope 9 and the test soil sample 8. By driving the winding roller 2 to rotate, the winding roller 2 winds the second rope 12. Through the cooperation of the second rope 12, the first rope 9, the first fixed pulley 6, and the second fixed pulley 7, the towing anchor model 10 is dragged. The dragging force is obtained through the tension sensor 11. The angle of the dragged posture and the dragging load during the penetration process of the towing anchor are collected and analyzed.

[0043] It should be noted that the guide wheels on the first fixed pulley 6 and the second fixed pulley 7 are capable of rotating around their axes.

[0044] In one embodiment of this utility model, a ruler plate 13 is fixedly connected to the top of the test chamber 1. A limiting groove 14 is formed on the ruler plate 13 along its length direction. A vertically arranged marker 15 is fixedly connected to the first rope 9 between the tension sensor 11 and the second fixed pulley 7. The marker 15 extends upward and passes through the limiting groove 14. When the winding roller 2 winds the second rope 12, the second rope 12 drags the first rope 9, which drives the marker 15 to move, thereby easily obtaining the dragging distance.

[0045] In one embodiment of this utility model, in order to facilitate the direct acquisition of dragging distance, scale lines are provided on the ruler 13 along its length direction.

[0046] In one embodiment of this utility model, in order to facilitate the installation and disassembly of the marker 15 and the first rope 9, the periphery of the first rope 9 is wrapped with a first connecting buckle 16 and a second connecting buckle 17. The lower end of the marker 15 is fixedly connected to the first connecting buckle 16. Several threaded posts 18 are fixedly connected to the first connecting buckle 16. The threaded posts 18 pass through the second connecting buckle 17 and are threadedly connected to the fastening nut 19.

[0047] In one embodiment of this utility model, in order to keep the second rope 12 horizontal with the first rope 9 and to allow the marker 15 to move smoothly along the limiting groove 14, a guide plate 20 is provided between the take-up roller 2 and the second fixed pulley 7, near the take-up roller 2. Both ends of the guide plate 20 are fixedly connected to the inner wall of the test chamber 1. A guide hole 21 is provided on the guide plate 20, through which the second rope 12 passes. The line connecting the first rope 9 and the second rope 12 between the guide hole 21 and the second fixed pulley 7 is parallel to the limiting groove 14.

[0048] In one embodiment of this utility model, in order to facilitate the rotation of the take-up roller 2 and realize the winding of the second rope 12, a first motor 22 is fixedly connected to the side wall of the outer side of the test chamber 1, and the output end of the first motor 22 is fixedly connected to the take-up roller 2.

[0049] In one embodiment of this utility model, a second motor 23 is fixedly connected to the side wall of the outer side of the test chamber 1. A first bevel gear 24 is fixedly connected to the output end of the second motor 23, and a second bevel gear 25 is fixedly connected to the top end of the threaded rod 4. The second bevel gear 25 meshes with the first bevel gear 24. By driving the second motor 23 to rotate the first bevel gear 24, the first bevel gear 24 drives the second bevel gear 25 to rotate, and the second bevel gear 25 rotates, thereby adjusting the height of the first fixed pulley 6.

[0050] In one embodiment of this utility model, in order to facilitate intuitive observation of the interior of the test chamber 1, the walls of the test chamber 1 are made of transparent material.

[0051] In one embodiment of this utility model, in order to improve the stability of the fixed block 3, guide rods 26 are slidably connected to both ends of the lifting block 5, and the two ends of the guide rods 26 are fixedly connected to the fixed block 3.

[0052] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims of this utility model.

Claims

1. A model test apparatus for investigating a process of penetration of a drag anchor into a soil bed, characterized by, Include: Test box (1), one end of which is rotatably connected with a winding roller (2) inside, the upper end and the lower end of the side wall of the other end are fixedly connected with fixed blocks (3), a threaded rod (4) is rotatably connected between the two fixed blocks (3), a lifting block (5) is threadedly connected on the threaded rod (4), a first fixed pulley (6) is fixedly connected on the lifting block (5), a second fixed pulley (7) is fixedly connected on the upper fixed block (3); Test soil sample (8), which is laid on the bottom of the test box (1); One end of the first rope (9) is fixedly connected with a towing anchor model (10), which is placed on the test soil sample (8), the other end of the first rope (9) is fixedly connected with a tension sensor (11) through the first fixed pulley (6) and the second fixed pulley (7), the other end of the tension sensor (11) is fixedly connected with a second rope (12), the other end of the second rope (12) is wound on the winding roller (2).

2. The model test apparatus for investigating the process of penetration of a drag anchor into a soil bed according to claim 1, wherein The top of the test box (1) is provided with a fixedly connected ruler plate (13), a limiting groove (14) is formed in the length direction of the ruler plate (13), a vertical marker (15) is fixedly connected on the first rope (9) between the tension sensor (11) and the second fixed pulley (7), and the marker (15) extends upward through the limiting groove (14).

3. The model test apparatus for investigating the process of penetration of a drag anchor into a soil bed according to claim 2, wherein The ruler plate (13) is provided with a scale along its length direction.

4. The model test apparatus for investigating the process of penetration of a drag anchor into a soil bed according to claim 3, wherein The first rope (9) is wrapped with a first connecting buckle (16) and a second connecting buckle (17), the lower end of the marker (15) is fixedly connected with the first connecting buckle (16), a plurality of threaded columns (18) are fixedly connected on the first connecting buckle (16), and the threaded columns (18) are threadedly connected with a fastening nut (19) through the second connecting buckle (17).

5. The model test apparatus for investigating the process of penetration of a drag anchor into a soil bed according to claim 4, wherein A guide plate (20) is arranged between the winding roller (2) and the second fixed pulley (7) and close to the winding roller (2), the two ends of the guide plate (20) are fixedly connected with the inner wall of the test box (1), a guide hole (21) is formed in the guide plate (20), and the second rope (12) passes through the guide hole (21).

6. The model test apparatus for investigating the process of penetration of a drag anchor into a soil bed according to claim 5, wherein The line connecting the first rope (9) and the second rope (12) between the guide hole (21) and the second fixed pulley (7) is parallel to the limiting groove (14).

7. The model test apparatus for investigating the process of penetration of a drag anchor into a soil bed according to claim 6, wherein A first motor (22) is fixedly connected on the side wall outside the test box (1), and the output end of the first motor (22) is fixedly connected with the winding roller (2).

8. The model test apparatus for investigating the process of penetration of a drag anchor into a soil bed according to claim 7, wherein A second motor (23) is fixedly connected on the side wall outside the test box (1), the output end of the second motor (23) is fixedly connected with a first bevel gear (24), the top end of the threaded rod (4) is fixedly connected with a second bevel gear (25), and the second bevel gear (25) is meshingly connected with the first bevel gear (24).

9. The model test apparatus for investigating the process of penetration of a drag anchor into a soil bed according to claim 1, wherein The wall of the test box (1) is made of transparent material.

10. The model test apparatus for investigating the process of penetration of a drag anchor into a soil bed according to claim 1, wherein The two ends of the lifting block (5) are slidably connected with guide rods (26), and the two ends of the guide rods (26) are fixedly connected with the fixed blocks (3).

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