Offshore photovoltaic on-board auxiliary tool

Abstract

The utility model provides a marine photovoltaic on-board auxiliary tool, and relates to the field of marine photovoltaics. The tool is used for fixing a to-be-fixed part and comprises a supporting column, a supporting part, a first fixing plate and a limiting part, the supporting part is arranged on the side wall of the supporting column and comprises a plurality of protruding parts protruding in the radial direction of the supporting column, and the protruding parts are evenly distributed in the circumferential direction of the supporting column; the multiple first fixing plates are correspondingly arranged on the protruding parts respectively, and the first fixing plates extend in the direction perpendicular to the axial direction of the supporting column; the multiple limiting parts are arranged on the sides, away from the supporting parts, of the first fixing plates in a one-to-one correspondence mode. The limiting part comprises a limiting plate and a second fixing plate, and the second fixing plate is parallel to the first fixing plate and detachably connected with the first fixing plate; the limiting plate is connected to the second fixing plate, and after the second fixing plate is connected with the first fixing plate, the limiting plate can tightly press the to-be-fixed part. According to the tool, the offshore operation difficulty, the operation cost and the safety risk in the operation process can be reduced.

Description

Technical Field

[0001] This disclosure relates to the field of marine photovoltaic technology, and more specifically, to a shipboard auxiliary tooling for marine photovoltaic applications. Background Technology

[0002] In offshore photovoltaic (PV) power generation projects, to ensure the power generation efficiency and structural reliability of the PV system, the PV grid supporting the photovoltaic panels is typically hoisted at a predetermined tilt angle. In related technologies, during the installation of the PV support structure, the PV grid is usually transported to the offshore work area and then hoisted using lifting equipment to achieve the predetermined tilt angle. However, the offshore environment is complex and variable, making hoisting operations difficult, costly, and posing significant safety risks.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0004] This disclosure provides an auxiliary tooling for offshore photovoltaic systems, which can reduce the difficulty, cost, and safety risks of offshore operations.

[0005] According to one aspect of this disclosure, a shipboard auxiliary tooling for securing components to be secured in a photovoltaic grid structure is provided, the shipboard auxiliary tooling comprising:

[0006] Support column;

[0007] A support portion is provided on the side wall of the support column. The support portion includes a plurality of protrusions that protrude radially outward along the support column, and the plurality of protrusions are evenly distributed along the circumference of the support column.

[0008] Multiple first fixing plates are respectively disposed on multiple protrusions, and the first fixing plates extend in a direction perpendicular to the axial direction of the support column;

[0009] Multiple limiting parts are provided one-to-one on the side of each of the first fixing plates away from the support part; each limiting part includes a limiting plate and a second fixing plate, the second fixing plate is distributed parallel to the first fixing plate and is detachably connected to the first fixing plate; the limiting plate is connected to the side of the second fixing plate away from the first fixing plate, and after the second fixing plate is connected to the first fixing plate, the limiting plate can press the part to be fixed.

[0010] In one exemplary embodiment of this disclosure, the protrusion includes a support plate that extends radially along the support column, and one end of the support plate is connected to the sidewall surface of the support column via a welded connection.

[0011] In one exemplary embodiment of this disclosure, a plurality of the support plates are distributed at equal angles along the circumference of the support column.

[0012] In one exemplary embodiment of this disclosure, the shipboard auxiliary tooling further includes:

[0013] A supporting frustum is disposed on one end face of the supporting column and is coaxially distributed with the supporting column. The supporting frustum is used to place the part to be fixed. The diameter of the supporting frustum is larger than the diameter of the supporting column and smaller than the sum of the diameter of the supporting column and the length of the region extending radially along the supporting column in the protrusion. A portion of the first fixing plate is located between the protrusion and the supporting frustum.

[0014] In one exemplary embodiment of this disclosure, the second fixing plate is detachably connected to the area of ​​the first fixing plate not covered by the supporting frustum.

[0015] In one exemplary embodiment of this disclosure, the limiting plate and the second fixing plate are vertically distributed.

[0016] In one exemplary embodiment of this disclosure, the limiting plate and the second fixing plate are an integral structure.

[0017] In one exemplary embodiment of this disclosure, the limiting plate and the second fixing plate are connected by a welded connection.

[0018] In one exemplary embodiment of this disclosure, the first fixing plate is provided with a plurality of first fixing holes, which are threaded holes; the second fixing plate is provided with a plurality of second fixing holes, which are threaded holes, and the plurality of second fixing holes are distributed on both sides of the limiting plate; each second fixing hole corresponds to each of the first fixing holes.

[0019] The shipboard auxiliary tooling also includes:

[0020] Multiple fasteners are rod-shaped and have threads on their surfaces; the multiple fasteners can pass through the second fixing hole and the first fixing hole corresponding to the second fixing hole, and are connected to the first fixing hole and the second fixing hole by threads.

[0021] In one exemplary embodiment of this disclosure, the number of the protrusion, the first fixing plate, and the limiting portion are all 2 to 8.

[0022] This disclosed auxiliary tooling for offshore photovoltaic systems can support the photovoltaic grid structure, which is hoisted to a preset tilt angle on land, during the transportation of the photovoltaic grid structure to the offshore photovoltaic installation area. In this process, support columns are placed on the ship transporting the photovoltaic grid structure, and the parts of the photovoltaic grid structure to be fixed, which cooperate with the tooling, are placed on the support columns. Then, a second fixing plate is connected to a first fixing plate. At this time, a limiting plate connected to the second fixing plate can press the parts to be fixed tightly, thus ensuring a tight connection between the parts to be fixed and the auxiliary tooling on the ship. Simultaneously, since there are multiple limiting plates, the parts to be fixed can be fixed simultaneously through multiple limiting plates, improving the stability of the tooling in fixing the photovoltaic grid structure. Because the multiple limiting plates are evenly distributed along the circumference of the support columns, the supporting force is evenly distributed on different limiting plates, avoiding damage caused by excessive local stress, thus improving the load-bearing capacity and stability of the tooling and ensuring the safety of the photovoltaic grid structure during transportation.

[0023] Because this disclosure provides a tooling system capable of maintaining and supporting the tilt posture (or tilt angle) of a photovoltaic (PV) grid structure on a ship, the PV grid structure carrying the PV panels can be hoisted to a preset tilt angle on land, and then transported to the offshore work area by transport ship. Compared to directly hoisting to the preset tilt angle at sea, hoisting the PV grid structure on land is less difficult, less costly, and carries less safety risk. Furthermore, during the aforementioned transportation process, multiple auxiliary tooling systems on board, as described in this disclosure, can be used to support and fix the PV grid structure at the preset tilt angle to maintain that angle (the heights of the various auxiliary tooling systems on board are different).

[0024] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0026] Figure 1 This is a schematic diagram showing the connection state between the shipboard auxiliary tooling and the part to be fixed in the marine photovoltaic system according to an embodiment of this disclosure.

[0027] In the figure: 1. Support column; 2. Support part; 3. First fixing plate; 4. Limiting part; 41. Limiting plate; 42. Second fixing plate; 5. Supporting frustum; 6. Fastener; 10. Part to be fixed; 20. Supporting rib. Detailed Implementation

[0028] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that the invention will be thorough and complete, and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0029] Although relative terms such as "up" and "down" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the device of the icon is flipped upside down, the component described as "up" will become the component described as "down." When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0030] The terms “a,” “one,” “the,” and “the” are used to indicate the existence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc. The terms “first” and “second” are used only as markers and are not a limitation on the number of objects.

[0031] This disclosure provides an auxiliary tooling for offshore photovoltaic systems. The tooling is used to fix a portion 10 to be fixed in the photovoltaic grid. The portion 10 to be fixed may be plate-shaped, for example, it may be a circular flat plate structure. The portion 10 to be fixed may be provided with a plurality of support ribs 20, each of which can extend in a direction perpendicular to the surface of the portion 10 to be fixed, and the plurality of support ribs 20 can be evenly distributed at equal angles along the circumference of the portion 10 to be fixed.

[0032] like Figure 1 As shown, the auxiliary tooling on board may include a support column 1, a support part 2, multiple first fixing plates 3, and multiple limiting parts 4, wherein:

[0033] The support part 2 is provided on the side wall of the support column 1. The support part 2 includes a plurality of protrusions that protrude outward along the radial direction of the support column 1, and the plurality of protrusions are evenly distributed along the circumference of the support column 1.

[0034] Multiple first fixing plates 3 are respectively disposed on multiple protrusions, and the first fixing plates 3 extend in a direction perpendicular to the axis of the support column 1;

[0035] Multiple limiting parts 4 are provided one-to-one on the side of each first fixing plate 3 away from the support part 2; the limiting part 4 includes a limiting plate 41 and a second fixing plate 42, the second fixing plate 42 is distributed parallel to the first fixing plate 3 and is detachably connected to the first fixing plate 3; the limiting plate 41 is connected to the side of the second fixing plate 42 away from the first fixing plate 3, and after the second fixing plate 42 is connected to the first fixing plate 3, the limiting plate 41 can press the part to be fixed 10.

[0036] The shipboard auxiliary tooling disclosed herein can support the photovoltaic grid frame, which is hoisted to a preset tilt angle on land, during the transportation of the photovoltaic grid frame to the offshore photovoltaic installation area. In this process, support columns 1 are placed on the ship transporting the photovoltaic grid frame, and the parts of the photovoltaic grid frame to be fixed (10) that cooperate with the tooling are placed on the support columns 1. Then, a second fixing plate 42 is connected to a first fixing plate 3. At this time, a limiting plate 41 connected to the second fixing plate 42 can press the parts to be fixed (10) tightly together, thus ensuring a tight connection between the parts to be fixed (10) and the shipboard auxiliary tooling. Simultaneously, since there are multiple limiting plates 41, the parts to be fixed (10) can be fixed simultaneously using multiple limiting plates 41, improving the stability of the tooling in fixing the photovoltaic grid frame. Because the multiple limiting plates 41 are evenly distributed along the circumference of the support columns 1, the supporting force is evenly distributed on different limiting plates 41, avoiding damage caused by excessive local stress, thus improving the load-bearing capacity and stability of the tooling and ensuring the safety of the photovoltaic grid frame during transportation.

[0037] Because this disclosure provides a tooling system capable of maintaining and supporting the tilt posture (or tilt angle) of a photovoltaic (PV) grid structure on a ship, the PV grid structure carrying the PV panels can be hoisted to a preset tilt angle on land, and then transported to the offshore work area by transport ship. Compared to directly hoisting to the preset tilt angle at sea, hoisting the PV grid structure on land is less difficult, less costly, and carries less safety risk. Furthermore, during the aforementioned transportation process, multiple auxiliary tooling systems on board, as described in this disclosure, can be used to support and fix the PV grid structure at the preset tilt angle to maintain that angle (the heights of the various auxiliary tooling systems on board are different).

[0038] The following is a detailed description of the various parts and specific details of the shipboard auxiliary tooling for offshore photovoltaic systems disclosed herein:

[0039] Support column 1 can be columnar, for example, it can be cylindrical or prismatic. The material of support column 1 can be a high-rigidity material, such as metal, alloy, or stainless steel. Support column 1 can be hollow or solid, depending on specific load-bearing requirements and weight limitations. A hollow structure can reduce overall weight while maintaining sufficient strength and rigidity. A solid structure provides higher load-bearing capacity and is suitable for supporting heavy-duty photovoltaic grid structures. During use, support column 1 can be placed perpendicular to the hull surface of the transport ship, with one end of support column 1 in contact with the hull surface of the transport ship.

[0040] The support portion 2 is disposed on the side wall of the support column 1. For example, the support portion 2 may include multiple protrusions (not shown in the figure) that protrude radially outward along the support column 1, and the multiple protrusions may be evenly distributed along the circumference of the support column 1. For example, the number of protrusions may be 2 to 8, such as 2, 4, 6 or 8. Of course, other numbers of protrusions may also be used, which will not be listed here.

[0041] In some embodiments of this disclosure, the protrusion may be provided on the outer periphery of one end of the support column 1 away from the hull surface of the transport ship, and one end face of the protrusion is flush with the end face of the support column 1 away from the hull surface of the transport ship.

[0042] In one exemplary embodiment of this disclosure, the protrusion may include a support plate. For example, the protrusion may include a support plate that extends radially along the support column 1 to ensure that it can effectively provide stable support force outward from the sidewall of the support column 1. The shape, size, and material of the support plate can be adjusted according to actual application requirements. For example, the support plate may be a rectangular plate, a trapezoidal plate, or other polygonal plate to adapt to different support and connection requirements. The material of the support plate may be a rigid material, such as metal, alloy, or stainless steel.

[0043] In one exemplary embodiment of this disclosure, one end of the support plate can be connected to the side wall surface of the support column 1 by a welded connection, which can ensure that the support plate will not separate from the support column 1 when subjected to external force, thereby ensuring the stability and safety of the entire support structure.

[0044] In one exemplary embodiment of this disclosure, multiple support plates can be distributed at equal angles along the circumference of the support column 1, which can make the support force evenly distributed around the support column 1, avoid local overload, and enhance the symmetry and aesthetics of the entire support structure.

[0045] The first fixing plate 3 can be a flat plate structure, and the first fixing plate 3 can extend in a direction perpendicular to the axial direction of the support column 1. The material of the first fixing plate 3 can be a rigid material, such as metal, alloy, or stainless steel. There can be multiple first fixing plates 3. For example, the number of first fixing plates 3 can be 2 to 8, such as 2, 4, 6, or 8. Of course, there can be other numbers of first fixing plates 3, which will not be listed here. In some embodiments of this disclosure, the number of first fixing plates 3 is equal to the number of protrusions, and multiple first fixing plates 3 are respectively provided on multiple protrusions, that is, each protrusion is provided with a corresponding first fixing plate 3. It should be noted that when the protrusion includes a support plate, the first fixing plates 3 are distributed perpendicularly to the support plate, and the first fixing plates 3 can be connected to the ends of the support plate by welding.

[0046] The limiting part 4 is detachably connected to the first fixing plate 3, and can limit and fix the photovoltaic grid frame carrying the photovoltaic panels to be fixed by the limiting part 4. The limiting part 4 can be made of a rigid material, such as metal, alloy or stainless steel. There can be multiple limiting parts 4, and multiple limiting parts 4 can limit the fixed part 10 at the same time, thereby improving the fixing stability of the tooling on the photovoltaic grid frame. For example, the number of limiting parts 4 can be 2 to 8, for example, 2, 4, 6 or 8. Of course, the number of limiting parts 4 can also be other, which will not be listed here. In some embodiments of this disclosure, the number of limiting parts 4 is equal to the number of first fixing plates 3, and multiple limiting parts 4 are provided one-to-one on the side of each first fixing plate 3 away from the support part 2, that is, each first fixing plate 3 is provided with a corresponding limiting part 4.

[0047] In one exemplary embodiment of this disclosure, the limiting part 4 may include a limiting plate 41 and a second fixing plate 42. The limiting plate 41 and the second fixing plate 42 may be vertically distributed, and both the limiting plate 41 and the fixing plate 42 may be flat. The second fixing plate 42 may be parallel to the first fixing plate 3 and may be detachably connected to the first fixing plate 3. For example, the first fixing plate 3 is provided with a plurality of first fixing holes. The shape of the first fixing hole may be circular; the first fixing hole may be a threaded hole, that is, the first fixing hole is provided with threads. For example, the number of first fixing holes may be 2 to 8, for example, the number of first fixing holes may be 2, 4, 6 or 8. Of course, the number of first fixing holes may also be other, which will not be listed here.

[0048] The second fixing plate 42 is provided with a plurality of second fixing holes, which are distributed on both sides of the limiting plate 41. The shape of the second fixing holes can be circular; the second fixing holes can be threaded holes, that is, the second fixing holes have threads inside. For example, the number of second fixing holes can be 2 to 8, such as 2, 4, 6, or 8. Of course, the number of second fixing holes can also be other, which will not be listed here. For example, when the number of second fixing holes is 4, two of the second fixing holes are located on the same side of the limiting plate 41, and the other two are located on the other side of the limiting plate 41; when the number of second fixing holes is 8, four of the second fixing holes are located on the same side of the limiting plate 41, and the other four are located on the other side of the limiting plate 41. It should be noted that the number of second fixing holes is equal to the number of first fixing holes, and each second fixing hole can be configured in a one-to-one correspondence with each first fixing hole.

[0049] The shipboard auxiliary tooling disclosed herein may further include multiple fasteners 6. The fasteners 6 may be made of a material with high rigidity, such as metal, alloy, or stainless steel. The fasteners 6 may be rod-shaped, and their surfaces may be threaded. For example, the fasteners 6 may be screws or bolts. In this disclosure, multiple fasteners 6 can pass through the second fixing hole and the corresponding first fixing hole in a one-to-one correspondence, and are connected to the first fixing hole and the second fixing hole by threads.

[0050] In some embodiments of this disclosure, the locking member 6 can pass through the second fixing hole and the first fixing hole in sequence, and one end of the locking member 6 can abut against the surface of the second fixing plate 42, while the other end extends to the side of the first fixing plate 3 away from the second fixing plate 42. The shipboard auxiliary tooling of this disclosure may also include a locking nut (not shown in the figure), the inner circumferential surface of which is provided with internal threads. The locking nut can be sleeved in the locking member 6 at the outer circumference of the end of the first fixing plate 3 extending to the side away from the second fixing plate 42, and is threadedly connected to the locking member 6. Rotating the locking nut can fasten the first fixing plate 3 and the second fixing plate 42 together.

[0051] The limiting plate 41 can be connected to the side of the second fixing plate 42 away from the first fixing plate 3. After the second fixing plate 42 is connected to the first fixing plate 3, the limiting plate 41 can press the part to be fixed 10. In some embodiments of this disclosure, the limiting plate 41 and the second fixing plate 42 can be an integral structure, and the limiting plate 41 and the second fixing plate 42 can be formed simultaneously by an integral molding process. In other embodiments of this disclosure, the limiting plate 41 and the second fixing plate 42 can be connected by a welded connection; that is, the limiting plate 41 and the second fixing plate 42 can be connected by welding.

[0052] In an exemplary embodiment of this disclosure, when the part to be fixed 10 is a circular plate structure and the circular plate structure is provided with a plurality of support ribs 20 evenly distributed at equal angles along the circumference of the part to be fixed 10, the limiting plate 41 can press the circular plate structure in the part to be fixed 10 and pass through the space between two adjacent support ribs 20; during transportation, the limiting plate 41 and the support ribs 20 cooperate to limit each other, thereby preventing the photovoltaic grid frame from rotating in the horizontal direction, which helps to improve the reliability of the auxiliary tooling on the ship.

[0053] In one exemplary embodiment of this disclosure, the shipboard auxiliary tooling may further include a supporting frustum 5. The supporting frustum 5 may be disposed on one end face of the supporting column 1 and coaxially distributed with the supporting column 1. The supporting frustum 5 may be used to place the photovoltaic grid frame's parts to be fixed 10. The supporting frustum 5 may be a flat plate structure, which can provide a stable support surface for the photovoltaic grid frame, thereby ensuring that the parts to be fixed 10 can be placed stably and firmly on the supporting frustum 5.

[0054] The diameter of the supporting frustum 5 is larger than the diameter of the supporting column 1, but its diameter can be smaller than the sum of the diameter of the supporting column 1 and the length of the region extending radially along the supporting column 1 in the protrusion. This dimensional design ensures that the supporting frustum 5 can provide sufficient support area while also ensuring that the protrusion can be partially exposed for mating and connection with the first fixing plate 3 or other components. At the same time, this dimensional relationship also helps to optimize the overall structural compactness and space utilization of the tooling.

[0055] In some embodiments of this disclosure, a portion of the first fixing plate 3 may be located between the protrusion and the supporting frustum 5. For example, the first fixing plate 3 may include a first surface and a second surface that are distributed opposite to each other. A portion of the first surface is welded to the surface of the supporting frustum 5 near the supporting column 1, and a portion of the second surface is welded to the end of the supporting plate near the supporting frustum 5. This arrangement achieves a tight connection between the first fixing plate 3 and the supporting column 1 and the supporting frustum 5.

[0056] The second fixing plate 42 is detachably connected to the area of ​​the first fixing plate 3 not covered by the supporting frustum 5, that is, the second fixing plate 42 and the supporting frustum 5 are distributed side by side. For example, each of the first fixing holes on the first fixing plate 3 is located in the area of ​​the first fixing plate 3 not covered by the supporting frustum 5.

[0057] It should be noted that the photovoltaic grid frame may include multiple parts 10 to be fixed. The multiple parts 10 to be fixed are at least divided into two rows that are spaced apart along the width direction of the photovoltaic grid frame. Each row includes multiple parts 10 to be fixed that are spaced apart along the length direction of the photovoltaic grid frame. During the process of supporting the photovoltaic grid frame on the ship, since the photovoltaic grid frame presents a preset tilt angle, the height of the parts 10 to be fixed in different areas of the photovoltaic grid frame from the surface of the ship is different. Therefore, multiple ship auxiliary tools of this disclosure can be used to fix and support the photovoltaic grid frame. Moreover, the height of the support column 1 in the multiple ship auxiliary tools is different so as to fix and support the parts 10 to be fixed at different heights, thereby ensuring that the photovoltaic grid frame always maintains the preset tilt angle during transportation.

[0058] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. An on-board auxiliary tool for offshore photovoltaics for fixing a to-be-fixed portion in a photovoltaic grid, characterized in that, The ship auxiliary tool comprises: a support column; a support part provided on a side wall of the support column, the support part comprising a plurality of protruding parts protruding radially outwardly from the support column, and the plurality of protruding parts being uniformly distributed circumferentially along the support column; a plurality of first fixing plates respectively provided on the plurality of protruding parts, and the first fixing plates extending in a direction perpendicular to an axial direction of the support column; a plurality of limiting parts respectively provided on a side of each of the first fixing plates away from the support part; the limiting part comprising a limiting plate and a second fixing plate, the second fixing plate being parallel to the first fixing plate and detachably connected to the first fixing plate; the limiting plate being connected to a side of the second fixing plate away from the first fixing plate, and the limiting plate being capable of pressing the part to be fixed after the second fixing plate is connected to the first fixing plate.

2. An on-board auxiliary tool according to claim 1, characterized in that The protruding part comprises a support plate, the support plate extending radially along the support column, and one end of the support plate being connected to a side wall surface of the support column through a welding connecting part.

3. An on-board auxiliary tool according to claim 2, characterised in that, The plurality of support plates are equally angularly distributed circumferentially along the support column.

4. The on-board auxiliary tool of claim 1, wherein, The ship auxiliary tool further comprises: a support circular table provided on an end surface of the support column and coaxially distributed with the support column, the support circular table being used for placing the part to be fixed; a diameter of the support circular table being greater than a diameter of the support column, and less than a sum of the diameter of the support column and a length of an area of the protruding part extending radially along the support column; and a part of the first fixing plate being located between the protruding part and the support circular table.

5. An on-board auxiliary tool as claimed in claim 4, characterised in that, The second fixing plate is detachably connected to an area of the first fixing plate not covered by the support circular table.

6. An on-board auxiliary tool as claimed in claim 5, characterised in that, The limiting plate and the second fixing plate are perpendicular to each other.

7. The on-board auxiliary tool of claim 1, wherein, The limiting plate and the second fixing plate are in an integral structure.

8. The on-board auxiliary tool of claim 1, wherein, The limiting plate and the second fixing plate are connected through a welding connecting part.

9. An on-board auxiliary tool as claimed in claim 6, characterised in that, The first fixing plate is provided with a plurality of first fixing holes, the first fixing holes being threaded holes; the second fixing plate is provided with a plurality of second fixing holes, the second fixing holes being threaded holes, and the plurality of second fixing holes being distributed on two sides of the limiting plate; and each of the second fixing holes is correspondingly provided with each of the first fixing holes. The ship auxiliary tool further comprises: a plurality of fastening members, the fastening members being in a rod shape and provided with threads on surfaces thereof; and the plurality of fastening members being capable of passing through the second fixing holes and the first fixing holes corresponding to the second fixing holes one by one, and being connected to the first fixing holes and the second fixing holes through threads.

10. A shipboard auxiliary tool according to any one of claims 1-9, characterized in that, The number of the protruding parts, the first fixing plates and the limiting parts is 2-8.

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