Ship side thruster mounting structure and ship side thruster mounting method

Abstract

The invention relates to the technical field of ship engineering, in particular to a ship side thruster mounting structure and a ship side thruster mounting method.The ship side thruster mounting structure comprises a bottom longitudinal girder, a center rib plate, a first front rib plate, a first rear rib plate, a plurality of first reinforcing plates and a plurality of second reinforcing plates; the first front rib plate and the central rib plate are spaced in the front-back direction to form a first space, each first reinforcing plate divides the first space into a plurality of first sub-spaces, and the first front rib plate and the guide cylinder are provided with a first welding channel for a human body to enter each first sub-space in the front-back direction; the interval between the first rear rib plate and the central rib plate in the front-back direction forms a second space; the second reinforcing plates divide the second space into a plurality of second subspaces, and the first rear rib plate and the guide cylinder are provided with second welding channels for human bodies to enter the second subspaces in the front-back direction, so that the working environment is improved, and the welding quality is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of ship engineering, and in particular to a ship thruster installation structure and a ship thruster installation method. Background Art

[0002] The ship thruster is a device that assists the ship in steering. The most widely used ship thruster is the guide tube type thruster. The guide tube type thruster is set at the bow of the ship. The guide tube runs through the hull along the width of the ship. The central axis of the guide tube is perpendicular to the longitudinal section of the hull. The thruster is set in the guide tube. Figure 1 As shown, in the existing bottom structure layout, ribs 300 are arranged at each rib position line, and the ribs 300 are arranged along the width direction of the hull 100. When installing the guide tube 200, the ribs 300 need to be welded to the outer bottom wall of the guide tube 200. In order to ensure that the ribs 300 can stably support the guide tube 200, a plurality of ribs 300 are often arranged under the guide tube 200. The plurality of ribs 300 are arranged at intervals along the length direction of the hull 100. The plurality of ribs 300 form a supporting structure for supporting the guide tube 200. Since the guide tube 200 needs to bear a large load during operation, the welding nodes between each rib 300 and the outer wall surface of the guide tube 200 require double-sided continuous welding. A narrow and long enclosed space is formed between the two adjacent front and rear ribs 300 located below the guide tube 200. In order to weld the weld between the rib 300 and the guide tube 200 located in the sealed space, it is necessary to set a manhole on each rib 300 that deviates from the center of the guide tube 200. The welders enter each narrow space through the manhole to weld.

[0003] Limited by the bow structure, the space at the bottom of the guide tube 200 is very narrow, and each narrow space forms a shape with a high middle and low sides in the width direction of the hull 100. It is difficult to weld in the lower areas on both sides, and it is difficult to ensure the welding quality. In addition, the air in the narrow space is bad, the labor intensity of personnel is high and the efficiency is low, resulting in high labor costs. Summary of the invention

[0004] The technical problem to be solved by the present invention is: at present, a narrow and long space with low sides and high middle is formed between the support structure for supporting the guide tube and the guide tube, and operators are required to enter the narrow and long space through a manhole for welding, which is not convenient for ensuring the welding quality and has high labor intensity.

[0005] In order to solve the above technical problems, the object of the present invention is to provide a ship thruster mounting structure for connecting a guide tube to a hull, wherein the length direction of the hull is defined as the front-to-back direction, and the width direction of the hull is defined as the left-to-right direction. The ship thruster mounting structure comprises:

[0006] A bottom longitudinal girder, the bottom longitudinal girder being fixed to the hull in the front-rear direction and being located at the center of the hull in the width direction;

[0007] A central rib plate, the central rib plates are provided on both the left and right sides of the bottom longitudinal girder, the guide tube and the central rib plate are arranged opposite to each other up and down, the lower end of the central rib plate is fixed to the hull, the upper end of the central rib plate is welded to the lower end of the guide tube, and the central rib plate divides the lower end of the guide tube into a front area and a rear area;

[0008] A first front rib, wherein the first front rib is fixed to both left and right sides of the bottom longitudinal girder, and the first front rib is arranged in front of the central rib; a first space is formed between the first front rib and the central rib in the front-to-back direction;

[0009] a plurality of first reinforcing plates, each of which is arranged in the first space, each of which and the bottom longitudinal girder divides the first space into a plurality of first subspaces arranged sequentially from left to right, and an upper end of each of which is welded to the front area;

[0010] A first gap is formed between the first front rib plate and the guide tube in the front-to-rear direction, and the first gap forms a first welding channel for a human body to enter each of the first subspaces;

[0011] a first rear rib, wherein the first rear rib is fixed to both left and right sides of the bottom longitudinal girder, and the first rear rib is arranged behind the central rib, and a second space is formed between the first rear rib and the central rib in the front-rear direction;

[0012] a plurality of second reinforcing plates, each of which is arranged in the second space, each of which and the bottom longitudinal girder divides the second space into a plurality of second subspaces arranged sequentially from left to right, and an upper end of each of which is welded to the rear area;

[0013] A second interval is formed between the first rear rib plate and the guide tube in the front-to-rear direction, and the second interval forms a second welding channel for a human body to enter each of the second sub-spaces.

[0014] As a preferred solution, the ship thruster mounting structure further includes a second front rib plate and a plurality of third reinforcement plates;

[0015] The second front ribs are fixed to the left and right sides of the bottom longitudinal girder, and the second front ribs are located in front of the first front ribs;

[0016] Each of the third reinforcing plates is arranged between the second front rib plate and the first front rib plate, and each of the third reinforcing plates is arranged in sequence from left to right. The front end of each of the third reinforcing plates is fixed to the second front rib plate, and the rear end of each of the third reinforcing plates is fixed to the first front rib plate.

[0017] As a preferred solution, the shape of each of the third reinforcing plates is a right-angled trapezoid with the hypotenuse facing the second front rib plate.

[0018] As a preferred solution, the ship thruster mounting structure further includes a second rear rib plate and a fourth reinforcement plate;

[0019] The second rear ribs are fixed to the left and right sides of the bottom longitudinal girder, and the second rear ribs are located behind the first rear ribs;

[0020] Each of the fourth reinforcing plates is arranged between the second rear rib plate and the first rear rib plate, a front end of each of the fourth reinforcing plates is fixed to the first rear rib plate, and a rear end of each of the fourth reinforcing plates is fixed to the second rear rib plate.

[0021] As a preferred solution, each of the fourth reinforcing plates is in the shape of a right-angled trapezoid with its hypotenuse facing the second rear rib.

[0022] As a preferred solution, the guide tube is a cylinder, and the upper end of each of the first reinforcing plates and the upper end of each of the second reinforcing plates are provided with an arc-shaped weld matching the cylinder.

[0023] As a preferred solution, each of the first reinforcing plates and each of the second reinforcing plates is provided with a weight-reducing hole.

[0024] As a preferred solution, the front end of each of the first reinforcing plates is welded to the first front rib plate, the rear end of each of the first reinforcing plates is welded to the central rib plate, and the lower end of each of the first reinforcing plates is welded to the hull;

[0025] The front end of each of the second reinforcing plates is welded to the central rib, the rear end of each of the second reinforcing plates is welded to the rear rib, and the lower end of each of the second reinforcing plates is welded to the hull.

[0026] As a preferred solution, a bracket is welded between the front end of each first reinforcing plate and the first front rib plate, and between the rear end of each first reinforcing plate and the central rib plate;

[0027] A bracket is welded between the front end of each of the second reinforcing plates and the central rib plate, and between the rear end of each of the second reinforcing plates and the rear rib plate.

[0028] A method for installing a ship thruster comprises the following steps:

[0029] Step S1, welding the central rib plate, the first front rib plate, the first rear rib plate, each first reinforcement plate and each second reinforcement plate of the above-mentioned ship thruster mounting structure to the hull;

[0030] Step S2, placing the guide tube on the ship thruster mounting structure, so that the center of the guide tube in the length direction is vertically opposite to the bottom longitudinal girder of the ship thruster mounting structure, and the center of the guide tube in the width direction is vertically opposite to the central rib;

[0031] Step S3, entering each first subspace through the first welding channel, welding the upper end surface of each first reinforcing plate to the front area of ​​the guide cylinder, and the front side surface of the central rib plate to the lower end surface of the guide cylinder;

[0032] Enter each second subspace through the second welding channel to weld the upper end surface of each second reinforcing plate to the rear area of ​​the guide tube, and the rear side surface of the central rib plate to the lower end surface of the guide tube.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The ship thruster mounting structure of the present invention comprises a bottom longitudinal girder, a central rib plate, a first front rib plate, a first rear rib plate, a plurality of first reinforcing plates and a plurality of second reinforcing plates, a central rib plate is provided on both sides of the left and right sides of the bottom longitudinal girder, a guide tube and the central rib plate are arranged relatively up and down, a lower end of the central rib plate is fixed to the hull, an upper end of the central rib plate is welded to the lower end of the guide tube, and the central rib plate divides the lower end of the guide tube into a front area and a rear area; a first front rib plate is fixed on both sides of the left and right sides of the bottom longitudinal girder, and the first front rib plate is arranged in front of the central rib plate; the intervals between the first front rib plate and the central rib plate in the front and rear directions form a first space; each first reinforcing plate is arranged in the first space, and each first reinforcing plate and the bottom longitudinal girder divide the first space into a plurality of first sub-spaces arranged in sequence from left to right, and the upper end of each first reinforcing plate is welded to the front area; the first front rib plate and the guide tube are arranged in a There is a first interval in the front-to-back direction, and the first interval forms a first welding channel for a human body to enter each first subspace; first rear ribs are fixed on both sides of the left and right sides of the bottom longitudinal girder, and the first rear ribs are arranged behind the central ribs, and the interval between the first rear ribs and the central ribs in the front-to-back direction forms a second space; each second reinforcing plate is arranged in the second space, and each second reinforcing plate and the bottom longitudinal girder divide the second space into a plurality of second subspaces arranged in sequence from left to right, and the upper end of each second reinforcing plate is welded to the rear area; the first rear rib and the guide tube have a second interval in the front-to-back direction, and the second interval forms a second welding channel for a human body to enter each second subspace; the depth of each first subspace and the second subspace is shallow and the length is short, which is convenient for welding, improves the working environment, and ensures the welding quality, while meeting the support strength requirements for the ship thruster. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a top view schematic diagram of the existing ship thruster installation structure;

[0036] Figure 2 It is a top view schematic diagram of the ship thruster installation structure of the present invention;

[0037] Figure 3 for Figure 2 Middle AA section view;

[0038] Figure 4 for Figure 2 Middle BB section view;

[0039] Figure 5 for Figure 2 Middle CC section view;

[0040] In the figure, 100, hull, 200, guide tube, 201, front area, 202, rear area, 300, rib, 1, bottom longitudinal girder, 2, center rib, 31, first front rib, 32, second front rib, 41, first reinforcement plate, 42, second reinforcement plate, 43, third reinforcement plate, 44, fourth reinforcement plate, 51, first rear rib, 52, second rear rib, 1000, first space, 1001, first subspace, 2000, second space, 2001, second subspace, 3000, first welding channel, 4000, second welding channel. DETAILED DESCRIPTION

[0041] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0042] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but such information should not be limited to these terms, which are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information.

[0043] The ship thruster mounting structure of the present invention is used to connect the guide tube 200 to the hull 100, such as Figure 2 to 2 Figure 5 As shown, the length direction of the hull 100 is defined as the front-to-back direction, and the width direction of the hull 100 is defined as the left-to-right direction. The preferred embodiment of the ship thruster mounting structure of the present invention includes: a bottom longitudinal girder 1, a center rib plate 2, a first front rib plate 31, a first rear rib plate 51, a plurality of first reinforcing plates 41, and a plurality of second reinforcing plates 42;

[0044] The bottom longitudinal girder 1 is fixed on the hull 100 along the front-to-back direction and is located at the center of the width direction of the hull 100. The bottom longitudinal girder 1 belongs to the existing structure of the hull 100. The bottom longitudinal girder 1 runs through the hull 100 from front to back, ensuring the overall strength of the hull 100. The ship thruster installation structure of this implementation does not destroy the structure of the bottom longitudinal girder 1, ensuring the strength of the hull 100.

[0045] A central rib plate 2 is provided on both the left and right sides of the bottom longitudinal girder 1, and the guide tube 200 is arranged opposite to the central rib plate 2 in the upper and lower directions. The lower end of the central rib plate 2 is fixed on the hull 100, and the upper end of the central rib plate 2 is welded to the lower end of the guide tube 200. The central rib plate 2 divides the lower end of the guide tube 200 into a front area 201 and a rear area 202; specifically, there can be two central rib plates 2, which are arranged symmetrically about the bottom longitudinal girder 1, or there can be one central rib plate 2, and a mounting groove is provided in the middle of the central rib plate 2, so that the bottom longitudinal girder 1 is welded in the mounting groove; in this embodiment, the axis of the guide tube 200 is arranged opposite to the central rib plate 2 in the upper and lower directions. In other embodiments of the present invention, the axis of the guide tube 200 can be staggered with the central rib plate 2, but the projection of the guide tube 200 on the horizontal plane still covers the central rib plate 2;

[0046] The first front ribs 31 are fixed on both the left and right sides of the bottom longitudinal girder 1, and the first front ribs 31 are arranged in front of the central ribs 2; the intervals between the first front ribs 31 and the central ribs 2 in the front-to-back direction form a first space 1000; specifically, there can be two first front ribs 31, which are arranged symmetrically about the bottom longitudinal girder 1, or there can be one first front rib 31, and a mounting groove is set in the middle of the first front rib 31, so that the bottom longitudinal girder 1 is welded in the mounting groove;

[0047] Each first reinforcing plate 41 is arranged in the first space 1000, and each first reinforcing plate 41 and the bottom longitudinal girder 1 divide the first space 1000 into a plurality of first subspaces 1001 arranged in sequence from left to right, and the upper end of each first reinforcing plate 41 is welded to the front area 201; specifically, each first reinforcing plate 41 extends in the front-to-back direction, the front end of each first reinforcing plate 41 is welded to the first front rib plate 31, the rear end of each first reinforcing plate 41 is welded to the central rib plate 2, and the lower end of each first reinforcing plate 41 is welded to the hull 100; by changing the thickness of each first reinforcing plate 41, the support strength of the ship thruster mounting structure of this embodiment to the guide tube 200 can be adjusted, and the distance between two adjacent first reinforcing plates 41 can be adjusted so that the distance is convenient for operators to weld;

[0048] The first front rib plate 31 and the guide tube 200 have a first interval in the front-to-back direction, and the first interval forms a first welding channel 3000 for a human body to enter each first subspace 1001; specifically, the projection of the guide tube 200 in the vertical direction is located behind the first front rib plate 31, and the first interval can connect each first subspace 1001, so it is not necessary to set a large manhole on each first reinforcing plate 41, thereby avoiding the adverse effect of setting a large manhole on the strength of the first reinforcing plate 41;

[0049] The first rear ribs 51 are fixed to both left and right sides of the bottom longitudinal girder 1, and the first rear ribs 51 are arranged behind the central ribs 2, and the interval between the first rear ribs 51 and the central ribs 2 in the front-to-back direction forms a second space 2000; specifically, there can be two first rear ribs 51, and the two first rear ribs 51 are arranged symmetrically about the bottom longitudinal girder 1, or there can be one first rear rib 51, and a mounting groove is set in the middle of the first rear rib 51, so that the bottom longitudinal girder 1 is welded in the mounting groove;

[0050] Each second reinforcing plate 42 is arranged in the second space 2000, and each second reinforcing plate 42 and the bottom longitudinal girder 1 divide the second space 2000 into a plurality of second subspaces 2001 arranged in sequence from left to right, and the upper end of each second reinforcing plate 42 is welded to the rear area 202; wherein each second reinforcing plate 42 extends in the front-to-back direction, the front end of each second reinforcing plate 42 is welded to the central rib 2, the rear end of each second reinforcing plate 42 is welded to the rear rib, and the lower end of each second reinforcing plate 42 is welded to the hull 100. By changing the thickness of each second reinforcing plate 42, the support strength of the ship thruster mounting structure of this embodiment to the guide tube 200 can be adjusted, and the distance between two adjacent second reinforcing plates 42 can be adjusted, so that the distance is convenient for operators to weld; and by thickening the thickness of the second reinforcing plate 42 and the first reinforcing plate 41, the center of gravity of the ship is lowered while ensuring the strength, and the safety is better;

[0051] The first rear rib 51 and the guide tube 200 have a second gap in the front-to-back direction, and the second gap forms a second welding channel 4000 for the human body to enter each second subspace 2001; specifically, the projection of the guide tube 200 in the vertical direction is located in front of the first rear rib 51, and the second gap can connect each first subspace 1001, so there is no need to set a larger manhole on each second reinforcement plate 42, thereby avoiding the adverse effect of setting a large manhole on the strength of the second reinforcement plate 42.

[0052] The depth of each first subspace 1001 and the second subspace 2001 is shallow and the length is short, which is convenient for welding, improves the working environment, reduces the construction difficulty, and ensures the welding quality. At the same time, it meets the support strength requirements for the ship thruster. Moreover, the manufacturing process of the ship thruster mounting structure of this embodiment is simpler; in addition, the ship thruster mounting structure of this embodiment does not damage the bottom longitudinal girder 1, thereby maintaining the stability of the hull structure.

[0053] In order to further improve the supporting strength of the ship thruster mounting structure of the present embodiment, a toggle plate is welded between the front end of each first reinforcing plate 41 and the first front rib 31, and between the rear end of each first reinforcing plate 41 and the center rib 2; a toggle plate is welded between the front end of each second reinforcing plate 42 and the center rib 2, and between the rear end of each second reinforcing plate 42 and the rear rib.

[0054] To further ensure the supporting strength of the ship thruster mounting structure of the present embodiment, in the present embodiment, the ship thruster mounting structure also includes a second front rib 32 and a plurality of third reinforcing plates 43; the second front rib 32 is fixed on both sides of the left and right sides of the bottom longitudinal girder 1, and the second front rib 32 is located in front of the first front rib 31; each third reinforcing plate 43 is arranged between the second front rib 32 and the first front rib 31, and each third reinforcing plate 43 is arranged in sequence from left to right, and the front end of each third reinforcing plate 43 is fixed to the second front rib 32, and the rear end of each third reinforcing plate 43 is fixed to the first front rib 31. The ship thruster mounting structure also includes a second rear rib 52 and a fourth reinforcing plate 44; the second rear rib 52 is fixed to both left and right sides of the bottom longitudinal girder 1, and the second rear rib 52 is located behind the first rear rib 51; each fourth reinforcing plate 44 is arranged between the second rear rib 52 and the first rear rib 51, and the front end of each fourth reinforcing plate 44 is fixed to the first rear rib 51, and the rear end of each fourth reinforcing plate 44 is fixed to the second rear rib 52. The arrangement of the second front rib 32 and each third reinforcing plate 43 enhances the support strength of the first front rib 31; the arrangement of the second rear rib 52 and each fourth reinforcing plate 44 enhances the support strength of the first rear rib 51.

[0055] The shape of each third reinforcing plate 43 is a right-angled trapezoid with the hypotenuse facing the second front rib 32; the shape of each fourth reinforcing plate 44 is a right-angled trapezoid with the hypotenuse facing the second rear rib 52. The third reinforcing plate 43 and the fourth reinforcing plate 44 are set as a right-angled trapezoid structure, which not only ensures the support strength of the third reinforcing plate 43 and the fourth reinforcing plate 44 to the first front rib 31 and the first rear rib 51, but also reduces the weight of the third reinforcing plate 43 and the fourth reinforcing plate 44. In order to further reduce the weight of the hull 100 structure, in this embodiment, each first reinforcing plate 41 and each second reinforcing plate 42 are provided with a weight-reducing hole, wherein the weight-reducing hole can be a circular hole, a triangular hole or other irregular shapes, and the size of a single weight-reducing hole is smaller than a manhole. Multiple weight-reducing holes can be arranged at intervals on a single first reinforcing plate 41 and a second reinforcing plate 42, so that the weight reduction is achieved without affecting the support strength of the first reinforcing plate 41 and the second reinforcing plate 42.

[0056] In this embodiment, the guide tube 200 is a cylinder, and the upper end of each first reinforcing plate 41 and the upper end of each second reinforcing plate 42 are provided with an arc-shaped welding opening matching the cylinder.

[0057] An embodiment of a method for installing a ship thruster comprises the following steps:

[0058] Step S1, welding the central rib 2, the first front rib 31, the first rear rib 51, each first reinforcing plate 41 and each second reinforcing plate 42 of the above-mentioned ship thruster mounting structure to the hull 100;

[0059] Step S2, placing the guide tube 200 on the ship thruster mounting structure, so that the center of the guide tube 200 in the length direction is vertically opposite to the bottom longitudinal girder 1 of the ship thruster mounting structure, and the center of the guide tube 200 in the width direction is vertically opposite to the center rib 2;

[0060] Step S3, entering each first subspace 1001 through the first welding channel 3000, welding the upper end surface of each first reinforcing plate 41 and the front area 201, and the front side surface of the central rib plate 2 and the lower end surface of the guide tube 200;

[0061] Enter each second subspace 2001 through the second welding channel 4000 to weld the upper end surface and the rear area 202 of each second reinforcing plate 42 , as well as the rear side surface of the central rib plate 2 and the lower end surface of the guide tube 200 .

[0062] In summary, the ship thruster mounting structure of the present invention includes a bottom longitudinal girder 1, a central rib plate 2, a first front rib plate 31, a first rear rib plate 51, a plurality of first reinforcing plates 41 and a plurality of second reinforcing plates 42. The left and right sides of the bottom longitudinal girder 1 are both provided with a central rib plate 2. The axis of the guide tube 200 is arranged vertically opposite to the central rib plate 2. The lower end of the central rib plate 2 is fixed to the hull 100. The upper end of the central rib plate 2 is welded to the lower end of the guide tube 200. The central rib plate 2 divides the lower end of the guide tube 200 into a front area 201 and a rear area 202. 02; The first front ribs 31 are fixed to both the left and right sides of the bottom longitudinal girder 1, and the first front ribs 31 are arranged in front of the central ribs 2; the intervals between the first front ribs 31 and the central ribs 2 in the front-to-back direction form a first space 1000; each first reinforcing plate 41 is arranged in the first space 1000, and each first reinforcing plate 41 and the bottom longitudinal girder 1 divide the first space 1000 into a plurality of first subspaces 1001 arranged in sequence from left to right, and the upper ends of each first reinforcing plate 41 are welded to the front area 201; the first front ribs 31 The first space 3000 is provided with a first spacing from the guide tube 200 in the front-to-back direction, and the first spacing forms a first welding channel 3000 for a human body to enter each first subspace 1001; the first rear rib plate 51 is fixed to both the left and right sides of the bottom longitudinal girder 1, and the first rear rib plate 51 is arranged behind the central rib plate 2, and the spacing between the first rear rib plate 51 and the central rib plate 2 in the front-to-back direction forms a second space 2000; each second reinforcing plate 42 is arranged in the second space 2000, and each second reinforcing plate 42 and the bottom longitudinal girder 1 separate the second space 2000 from the left There are multiple second subspaces 2001 arranged in sequence to the right, and the upper end of each second reinforcement plate 42 is welded to the rear area 202; the first rear rib 51 and the guide tube 200 have a second interval in the front-to-back direction, and the second interval forms a second welding channel 4000 for the human body to enter each second subspace 2001; the depth of each first subspace 1001 and the second subspace 2001 is shallow and the length is short, which is convenient for welding, improves the working environment, and ensures the welding quality, while meeting the support strength requirements for the ship thruster.

[0063] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A ship thruster mounting structure, used for connecting a guide tube (200) to a ship hull (100), characterized in that: The length direction of the hull (100) is defined as the front-rear direction, the width direction of the hull (100) is defined as the left-right direction, and the ship thruster mounting structure comprises: A bottom longitudinal girder (1), the bottom longitudinal girder (1) being fixed to the hull (100) in the front-rear direction and located at the center of the hull (100) in the width direction; a central rib plate (2), the central rib plate (2) being provided on both left and right sides of the bottom longitudinal girder (1), the guide tube (200) and the central rib plate (2) being arranged opposite to each other in upper and lower directions, the lower end of the central rib plate (2) being fixed to the hull (100), the upper end of the central rib plate (2) being welded to the lower end of the guide tube (200), and the central rib plate (2) dividing the lower end of the guide tube (200) into a front area (201) and a rear area (202); a first front rib (31), the first front rib (31) being fixed to both left and right sides of the bottom longitudinal girder (1), and the first front rib (31) being arranged in front of the central rib (2); the interval between the first front rib (31) and the central rib (2) in the front-to-back direction forms a first space (1000); a plurality of first reinforcing plates (41), each of the first reinforcing plates (41) being arranged in the first space (1000), each of the first reinforcing plates (41) and the bottom longitudinal girder (1) dividing the first space (1000) into a plurality of first subspaces (1001) arranged sequentially from left to right, and an upper end of each of the first reinforcing plates (41) being welded to the front region (201); a first rear rib (51), the first rear rib (51) being fixed to both left and right sides of the bottom longitudinal girder (1), and the first rear rib (51) being arranged behind the central rib (2), and the interval between the first rear rib (51) and the central rib (2) in the front-to-rear direction forms a second space (2000); a plurality of second reinforcing plates (42), each of the second reinforcing plates (42) being arranged in the second space (2000), each of the second reinforcing plates (42) and the bottom longitudinal girder (1) dividing the second space (2000) into a plurality of second subspaces (2001) arranged sequentially from left to right, and an upper end of each of the second reinforcing plates (42) being welded to the rear area (202); The first front rib plate (31) and the guide tube (200) have a first spacing in the front-to-back direction, and the first spacing forms a first welding channel (3000) for a human body to enter each of the first sub-spaces (1001); the first rear rib plate (51) and the guide tube (200) have a second spacing in the front-to-back direction, and the second spacing forms a second welding channel (4000) for a human body to enter each of the second sub-spaces (2001).

2. The ship thruster mounting structure according to claim 1, characterized in that: The ship thruster mounting structure further comprises a second front rib plate (32) and a plurality of third reinforcement plates (43); The second front ribs (32) are fixed to both left and right sides of the bottom longitudinal girder (1), and the second front ribs (32) are located in front of the first front ribs (31); Each of the third reinforcing plates (43) is arranged between the second front rib plate (32) and the first front rib plate (31), and each of the third reinforcing plates (43) is arranged in sequence from left to right at intervals, and a front end of each of the third reinforcing plates (43) is fixed to the second front rib plate (32), and a rear end of each of the third reinforcing plates (43) is fixed to the first front rib plate (31).

3. The ship thruster installation structure according to claim 2, characterized in that: The shape of each of the third reinforcing plates (43) is a right-angled trapezoid with the hypotenuse facing the second front rib plate (32).

4. The ship thruster mounting structure according to claim 1, characterized in that: The ship thruster mounting structure further comprises a second rear rib plate (52) and a fourth reinforcement plate (44); The second rear ribs (52) are fixed to both left and right sides of the bottom longitudinal girder (1), and the second rear ribs (52) are located behind the first rear ribs (51); Each of the fourth reinforcing plates (44) is arranged between the second rear rib plate (52) and the first rear rib plate (51), the front end of each of the fourth reinforcing plates (44) is fixed to the first rear rib plate (51), and the rear end of each of the fourth reinforcing plates (44) is fixed to the second rear rib plate (52).

5. The ship thruster mounting structure according to claim 4, characterized in that: The shape of each of the fourth reinforcing plates (44) is a right-angled trapezoid with the hypotenuse facing the second rear rib plate (52).

6. The ship thruster mounting structure according to claim 1, characterized in that: The guide tube (200) is a cylinder, and the upper end of each of the first reinforcing plates (41) and the upper end of each of the second reinforcing plates (42) are provided with an arc-shaped welding opening matching the cylinder.

7. The ship thruster mounting structure according to claim 1, characterized in that: Each of the first reinforcing plates (41) and each of the second reinforcing plates (42) is provided with a weight-reducing hole.

8. The ship thruster mounting structure according to claim 1, characterized in that: The front end of each of the first reinforcing plates (41) is welded to the first front rib plate (31), the rear end of each of the first reinforcing plates (41) is welded to the central rib plate (2), and the lower end of each of the first reinforcing plates (41) is welded to the hull (100); The front end of each second reinforcing plate (42) is welded to the central rib (2), the rear end of each second reinforcing plate (42) is welded to the rear rib, and the lower end of each second reinforcing plate (42) is welded to the hull (100).

9. The ship thruster mounting structure according to claim 8, characterized in that: A bracket is welded between the front end of each first reinforcing plate (41) and the first front rib plate (31), and between the rear end of each first reinforcing plate (41) and the central rib plate (2); A toggle plate is welded between the front end of each second reinforcing plate (42) and the central rib plate (2), and between the rear end of each second reinforcing plate (42) and the rear rib plate.

10. A method for installing a ship thruster, characterized in that: The following steps are included: Step S1, welding the central rib (2), the first front rib (31), the first rear rib (51), each first reinforcement plate (41) and each second reinforcement plate (42) of the ship thruster mounting structure according to any one of claims 1 to 9 to the hull (100); Step S2, placing the guide tube (200) on the ship thruster mounting structure, so that the center of the guide tube (200) in the length direction is vertically opposite to the bottom longitudinal girder (1) of the ship thruster mounting structure, and the center of the guide tube (200) in the width direction is vertically opposite to the central rib (2); Step S3, entering each first subspace (1001) through the first welding channel (3000), welding the upper end surface of each first reinforcing plate (41) to the front area (201) of the guide tube (200), and the front side surface of the central rib plate (2) to the lower end surface of the guide tube (200); Enter each second subspace (2001) through the second welding channel (4000), and weld the upper end surface of each second reinforcing plate (42) to the rear area (202) of the guide tube (200), as well as the rear side surface of the central rib plate (2) to the lower end surface of the guide tube (200).

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