Method for assembling steering oar and ship body

Abstract

The invention discloses a method for assembling a steering oar and a ship body. The method comprises the following steps of: hoisting an overwater part in a mounting hole of the ship body from top to bottom; then the trunk of the overwater part of the steering oar is welded to the ship body; then the welding quality and the sealing performance are checked, and the position of the overwater part on the ship body is rechecked; and then the underwater part is hoisted from bottom to top, the rotary pipe of the overwater part is fixedly connected with the lower box body of the underwater part, a vertical shaft in the rotary pipe is in transmission connection with a lower input shaft of the lower box body, and then steering oar assembly is completed on the ship body. Therefore, the ship body opening is prevented from being too large, the size of the well box flange is reduced, integral hoisting is not needed, operation is flexible, and hoisting difficulty is low.

Description

Technical Field

[0001] The invention relates to the field of propeller hoisting, and in particular to a method for assembling an omni-rotating rudder propeller and a hull. Background Art

[0002] The full-rotation propeller propeller is a propeller that can control the propeller to rotate 360 ​​degrees. The direction and size of its thrust are controllable. Therefore, the reliability of its connection with the hull is crucial. At present, the more commonly used installation methods are top-mounted and bottom-mounted. The top-mounted type is to hoist the full-rotation propeller from top to bottom in the hull as a whole, and fix the full-rotation propeller by bolt connection. Its main support relies on the well plate and bolts. Due to the large volume of the duct, the top-mounted installation requires a large window to be set on the top of the propeller compartment to facilitate the installation of the propeller. The size of the well supporting the full-rotation propeller will also be very large, which is not conducive to the rigidity of the entire propeller and is prone to vibration and deformation. The bottom-mounted type is to hoist the full-rotation propeller from bottom to top in the hull as a whole, and fix the full-rotation propeller by bolt connection. It mainly relies on bolts to withstand the propeller force.

[0003] For example, the prior art with publication number CN102923252A discloses a method for installing a full-rotation propeller device, in which the well of the propeller is fixed in a larger well cylinder, a larger hole is opened on the hull, and then the well cylinder is installed in the larger hole on the hull. This installation method is often limited by the lower space of the stern; and the entire propeller is hoisted in one piece, the weight of a single hoist is large, and there are many details that need to be paid attention to during the assembly process. In addition, during the hoisting process, the structure above the well and the structure below the well box are not protected by the well cylinder, which also makes it easy to damage the upper parts of the propeller during the hoisting process. Summary of the invention

[0004] In order to solve the problem in the prior art that large space is required at the stern and the hoisting difficulty is great during the hoisting of the rudder propeller, the purpose of the present invention is to provide a method for assembling a fully rotating rudder propeller and a hull, which has small requirements for the space inside the ship, is flexible in operation, and has low hoisting difficulty.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a method for assembling a full-rotation propeller and a hull, the propeller comprises an above-water part and an underwater part, the above-water part comprises a well and a slewing tube, and the underwater part comprises a lower box; the slewing tube is rotatably installed in the well, the bottom of the slewing tube is output from the well and connected to the slewing tube and the lower box in a detachable manner, the lower input shaft on the lower box is plugged with the vertical shaft in the slewing tube and splined; a mounting hole adapted to the well is opened on the hull; The assembly method includes the following steps: Step 1): Lift the above-water part into the mounting hole of the hull from top to bottom; Step 2): Weld the well of the above-water part of the rudder propeller to the hull; Step 3): Check the welding quality and sealing, and review the position of the above-water part on the hull; Step 4): Lift the underwater part from bottom to top, fix the slewing tube of the above-water part and the lower box of the underwater part, connect the vertical shaft in the slewing tube and the lower input shaft of the lower box, and then complete the assembly of the rudder propeller on the hull.

[0006] Preferably, the well enclosure is fixed on a large flange of the well box, and a plurality of lifting holes are arranged on the large flange of the well enclosure, and the plurality of lifting holes are symmetrically arranged; in the above-mentioned step 1), the lifting equipment is connected to the lifting holes, and the above-water part of the rudder propeller is lifted on the hull.

[0007] Preferably, in the above step 1), before hoisting the above-water part, an auxiliary tooling for adjusting the position of the surrounding well is installed on the hull.

[0008] Preferably, the auxiliary tooling includes an L-shaped adjustment plate and a ejector bolt, the adjustment plate is fixed on the top of the large flange of the manhole, and the ejector bolt is threadedly connected to the adjustment plate; a plurality of auxiliary tooling 3 are arranged around the mounting hole; after the above-water part is inserted into the mounting hole of the hull, the ejector bolt is rotated so that one end of the ejector bolt pushes the above-water part of the rudder propeller to adjust the relative position of the above-water part and the mounting hole.

[0009] Preferably, in the above step 2), the enclosure is fixedly connected to the hull by real-time symmetrical welding.

[0010] Preferably, a plurality of lifting points are provided on the underwater part and the hull. In the above step 4), a lifting device is used to connect the preset lifting points on the underwater part, and the underwater part is pulled upward to connect the underwater part with the surface part.

[0011] Preferably, the upper matching flange at the bottom of the rotating tube and the lower matching flange are provided on the lower box body, and through holes are provided on both the upper matching flange and the lower matching flange; in the above step 4), before hoisting the underwater part of the rudder propeller, a pre-installed guide column is installed on the upper matching flange at the bottom of the rotating tube; when hoisting the underwater part, the guide column is plugged into the assembly hole on the lower matching flange to guide the underwater part of the rudder propeller.

[0012] Preferably, after the spline fitting part meets the requirements, the guide column is removed and the upper mating flange and the lower mating flange are fixed using studs.

[0013] Preferably, after the upper mating flange and the lower mating flange are fixed, a plug gauge is used to check the clearance between the upper mating flange and the lower mating flange.

[0014] The beneficial effects of the technical solution of the present invention are as follows: the rudder propeller is divided into two parts, an above-water part and an underwater part, and after the above-water part is installed on the hull, the above-water part and the underwater part are connected, thus avoiding the requirement of the top-mounted type for a too large hull opening, and also reducing the size of the well box flange. Moreover, relative to the overall hoisting of the rudder propeller, the above method can reduce the hoisting weight, eliminate the need for overall hoisting, and avoid damage to the upper parts of the rudder propeller; the split hoisting requires little space inside the ship, is flexible to operate, and has low hoisting difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the connection structure between the hull and the rudder propeller; Figure 2 The schematic diagram is a diagram of hoisting the underwater part of the rudder propeller after the above-water part of the rudder propeller is installed on the hull; Figure 3 This is a schematic diagram of the hull structure; Figure 4 for Figure 1 Enlarged view of point A in the middle.

[0016] Reference numerals: 1, hull; 11, mounting hole; 12, second connecting plate; 13, third connecting plate; 14, radial plate; 21. Upper box; 22. Input flange; 23. Large flange of enclosure; 24. Enclosure; 25. Rotating tube; 251. Upper matching flange; 26. First connecting plate; 261. Connecting part; 262. Tubular part; 27. Lower box; 271. Lower matching flange; 28. Lifting point; 29. ​​Guide column; 20. Lower input shaft; 3. Auxiliary tooling. DETAILED DESCRIPTION

[0017] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more, unless otherwise clearly specified.

[0020] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. Example

[0022] like Figures 1 to 4 The connection structure between a hull and a fully rotating propeller is shown, wherein the propeller comprises a well 24, a large well flange 23 is fixed on the top of the well 24, and a first connecting plate 26 is sleeved and fixed on the bottom of the well 24; The hull 1 is provided with a mounting hole 11 for receiving the surrounding well 24, a second annular connecting plate 12 is fixed to the top of the hull 1, and a third annular connecting plate 13 is fixed to the bottom of the hull 1. The mounting hole 11, the inner hole of the second connecting plate 12 and the inner hole of the third connecting plate 13 are coaxially arranged; The large well flange 23 is inserted into the inner hole of the second connecting plate 12, and the large well flange 23 is fixedly connected to the second connecting plate 12; the first connecting plate 26 is inserted into the inner hole of the third connecting plate 13, and the first connecting plate 26 and the third connecting plate 13 are fixedly connected.

[0023] In this way, the above structure can be used to open a window on the hull that only matches the steering propeller enclosure 24, so that the hull 1 and the steering propeller can be assembled, which can effectively improve the connection strength between the steering propeller and the hull 1, and thus effectively improve the overall rigidity. The connection structure between the steering propeller and the hull is a double-layer frame structure, which can more effectively fix the steering propeller, reduce the bending moment at the enclosure, prevent the steering propeller from deforming, and protect the mechanical parts in the enclosure.

[0024] In this embodiment, the first connecting plate 26 is welded and fixed to the large flange 23 of the well enclosure; the second connecting plate 12 is welded and fixed to the third connecting plate 13. Specifically, the first connecting plate 26 is fixedly connected to the large flange 23 of the well enclosure by real-time symmetrical welding, and the second connecting plate is fixedly connected to the third connecting plate 13 by real-time symmetrical welding. With such a configuration, the welding process of the hull 1 should be welded symmetrically in real time to avoid deformation of the flange of the well enclosure 24 caused by unilateral welding. The well enclosure and the hull are welded as a whole, which can effectively avoid resonance with the hull and protect the rudder propeller structure.

[0025] Further preferably, a welding notch is provided on the outer circular end of the large flange 23 of the well enclosure.

[0026] In this embodiment, Figure 3 As shown, the hull 1 includes a radial plate 14; a plurality of radial plates 14 are evenly arranged between the second connecting plate 12 and the third connecting plate 13, and the second connecting plate 12 and the third connecting plate 13 are fixedly connected to the radial plate 14; the second connecting plate 12, the third connecting plate 13 and the plurality of radial plates 14 enclose a mounting hole 11. Such an arrangement can enhance the strength of the connection between the hull 1 and the rudder propeller, thereby providing the safety of the hull 1. Further preferably, the third connecting plate 13 is a continuous annular plate.

[0027] In this embodiment, Figure 1 and Figure 2 As shown, an auxiliary plate is fixed to one end of the radial plate 14 facing the mounting hole 11, and a support plate for supporting the enclosure 24 is fixed to the end surface of the auxiliary plate facing the mounting hole 11. In this way, the support plate can support the steering propeller and provide rough positioning assistance for the steering propeller during the installation of the steering propeller; the top of the enclosure 24 is fixed to the first connecting plate 26, the side of the enclosure 24 is supported by the support plate, and the bottom of the enclosure 24 is fixedly connected to the third connecting plate 13, thereby ensuring the stability of the hull 1 and the steering propeller during the travel.

[0028] In this embodiment, the top of the first connecting plate 26 protrudes from the third connecting plate 13 , and the top of the third connecting plate 13 is welded to the outer peripheral surface of the first connecting plate 26 ; the bottom of the first connecting plate 26 is welded to the inner wall of the third connecting plate 13 .

[0029] Further preferably, Figure 4As shown, the first connecting plate 26 includes a connecting portion 261 and a tubular portion 262. The tubular portion 262 is sleeved on the bottom of the surrounding well 24, and the connecting portion 261 is arranged between the tubular portion 262 and the surrounding well 24. The two ends of the connecting plate are fixedly connected to the tubular portion 262 and the surrounding well 24 respectively.

[0030] In this embodiment, Figure 1 , Figure 2 and Figure 4 As shown, a rotatable rotating pipe 25 is installed in the enclosure 24, and the bottom of the rotating pipe 25 extends out of the enclosure 24 and is fixedly connected to the lower box 27; specifically, an upper matching flange 251 is fixed to the bottom of the rotating pipe 25, and a lower matching flange 271 is provided on the lower box 27. Through holes are provided on the upper matching flange 251 and the lower matching flange 271, and the upper matching flange 251 and the lower matching flange 271 are fixedly connected by studs. The studs are made of stainless steel.

[0031] Further preferably, double nuts or anti-loosening nuts are used on the studs to implement anti-loosening treatment on the rotary tube 25 and the lower box body 27.

[0032] In this embodiment, Figure 1 and Figure 2 As shown, the input flange 22, the intermediate shaft, the upper output shaft, the vertical shaft and the paddle shaft are all rotatably mounted on the housing, the intermediate shaft and the paddle shaft are arranged horizontally, and the upper output shaft, the lower input shaft 20 and the vertical shaft are arranged vertically; the intermediate shaft is fixed with an upper input gear, the upper end of the upper output shaft is fixed with an upper output gear, and the upper input gear and the upper output gear are meshed for transmission; the upper output shaft is located on the upper side of the lower input shaft 20, and the upper output shaft, the vertical shaft and the lower input shaft 20 are coaxial and spline-connected; the lower input gear is arranged on the lower input shaft 20, and the paddle shaft is installed with a lower output gear, and the lower input gear and the lower output gear are meshed for transmission; one end of the paddle shaft extends out of the housing and is installed with a paddle; the input flange 22 is connected to one end of the intermediate shaft through a clutch. The housing includes an upper housing 21, a well 24, a slewing bearing, a slewing tube 25 and a lower housing 27; the well 24 is fixed at the bottom of the upper housing 21, the slewing bearing and the slewing tube 25 are both located in the well 24, the slewing bearing is rotatably mounted at the bottom of the upper housing 21, the slewing tube 25 is fixed at the bottom of the slewing bearing, the slewing tube 25 is rotatably connected to the well 24, the bottom of the slewing tube 25 extends out of the well 24, and the lower housing 27 is fixed at the bottom of the slewing tube 25; the intermediate shaft, the upper output shaft and the clutch are all mounted on the upper housing 21, the vertical shaft extends from the slewing support shaft and the slewing tube 25 into the lower housing 27, and the lower input shaft 20 and the propeller shaft are mounted in the lower housing 27. The specific structure of the full-slewing rudder can refer to the prior art documents with publication numbers CN220905310U and CN222117089U. Example

[0033] A method for assembling the above-mentioned omni-rotating propeller and the hull 1 by using the above-mentioned connection structure: The rudder propeller includes an above-water part and an underwater part, the above-water part includes a well 24 and a rotating tube 25, and the underwater part includes the lower box 27; the rotating tube 25 is rotatably installed in the well 24, the bottom of the rotating tube 25 is output from the well 24 and connected to the rotating tube 25 and the lower box in a detachable manner, the lower input shaft 20 on the lower box 27 is plugged with the vertical shaft in the rotating tube 25 and splined; the hull 1 is provided with a mounting hole 11 adapted to the well 2424; The assembly method includes the following steps: Step 1): hoist the above-water part into the mounting hole 11 of the hull 1 from top to bottom; Step 2): Weld the well 24 of the above-water part of the rudder propeller to the hull 1; Step 3): Check the welding quality and sealing, and review the position of the above-water part on the hull; Step 4): Lift the underwater part from bottom to top, so that the slewing tube of the above-water part and the lower box of the underwater part are fixedly connected, and the vertical shaft in the slewing tube and the lower input shaft of the lower box are transmission-connected, and then complete the assembly of the rudder propeller on the hull 1.

[0034] With such an arrangement, the rudder propeller is divided into two parts, an above-water part and an underwater part. After the above-water part is installed on the hull, the above-water part and the underwater part are connected. This avoids the requirement of a hull opening that is too large for the top-mounted type, and also reduces the size of the well box flange. Moreover, relative to the overall hoisting of the rudder propeller, the above method can reduce the hoisting weight, eliminate the need for overall hoisting, and avoid damage to the upper parts of the rudder propeller. The split hoisting requires less space inside the ship, is flexible to operate, and has low hoisting difficulty.

[0035] In this embodiment, four lifting holes are provided on the large flange 23 of the well enclosure, and the four lifting holes are symmetrically arranged; in the above-mentioned step 1), the lifting equipment is connected to the four lifting holes, and the above-water part of the rudder propeller is lifted on the hull 1.

[0036] In this embodiment, in the above step 1), before hoisting the above-water part, an auxiliary tooling for debugging the position of the enclosure well 24 is installed on the hull 1. Specifically, Figure 2As shown, the auxiliary tooling 3 includes an L-shaped adjustment plate and an ejector bolt, the adjustment plate is fixed on the top of the large flange 23 of the well, and the ejector bolt is threadedly connected with the adjustment plate; multiple auxiliary tooling 3 are arranged around the mounting hole 11; after the above-water part is inserted into the mounting hole 11 of the hull 1, the ejector bolt is rotated so that one end of the ejector bolt pushes the above-water part of the rudder propeller to adjust the relative position of the above-water part and the mounting hole 11. In the process of correcting the center position of the rudder propeller input flange 22, the installation status of the above-water part and the hull 1 is determined by comparing the theoretical reference point; when the position of the above-water part meets the installation requirements, a Nogan pressure plate is welded on the large flange 23 of the well to fix the above-water part.

[0037] In this embodiment, in the above step 2), the first connecting plate 26 and the large flange 23 of the manhole are fixedly connected by real-time symmetrical welding, and the second connecting plate and the third connecting plate 13 are fixedly connected by real-time symmetrical welding, so that the above-water part of the rudder propeller is fixed on the hull 1; after welding is completed, the auxiliary tooling 3 is removed.

[0038] In this embodiment, in the above step 3), the method and requirements for checking the welding quality and sealing are consistent with the requirements for welding the outer plate of the hull 1.

[0039] In this embodiment, Figure 1 and Figure 2 As shown, multiple lifting points are provided on the underwater part and the hull 1. In the above step 4), a lifting device is used to connect the preset lifting point 28 on the underwater part, and the underwater part is pulled upward to connect the underwater part with the surface part. Among them, two lifting points 28 are provided at the bottom of the hull 1, and the two lifting points 28 are respectively provided on both sides of the mounting hole 11; one lifting point 28 is provided at the end of the lower box 27 where the blade is provided, and three lifting points 28 are provided from top to bottom at the end of the lower box 27 facing away from the blade. It is further preferred that three lifting points 28 are used as the main lifting points, and the positions of the remaining lifting points 28 are used as auxiliary points to prevent the lifting device 3-8 from breaking and damaging the underwater part of the rudder propeller.

[0040] In this embodiment, after the above-water part is installed on the hull 1, the vertical shaft of the above-water part is suspended in the rotary drum; the lower input shaft 20 of the power of the underwater part is installed in the lower box 27 of the underwater part through a bearing, and the top of the lower input shaft 20 protrudes from the box; the bottom of the vertical shaft is provided with an internal spline, and the top of the lower input shaft 20 is provided with an external spline; In this embodiment, in the above step 4), before hoisting the underwater part of the rudder propeller, a pre-installed guide column 29 is installed on the upper matching flange 251 at the bottom of the rotating tube 25; when hoisting the underwater part, the guide column 29 is plugged into the assembly hole on the lower matching flange 271 to guide the underwater part of the rudder propeller; then, the upper matching flange 251 and the lower matching flange 271 are fixed using fasteners.

[0041] Furthermore, during the process of hoisting the underwater part, the distance between the upper matching flange 251 and the lower matching flange 271 is detected in real time; before connecting the vertical shaft and the lower input shaft 20, the distance deviation between the upper matching flange 251 and the lower matching flange 271 is ensured to be within 0.5 mm, and the blade is rotated slightly to allow the top of the lower input shaft 20 to be smoothly inserted into the inner spline hole at the bottom of the vertical shaft.

[0042] Further, after the spline fitting reaches 70%, the guide column 29 is removed, and the upper matching flange 251 and the lower matching flange 271 are fixed with studs, and then a 0.1mm feeler gauge is used to detect the gap between the upper matching flange 251 and the lower matching flange 271 to ensure that the feeler gauge cannot be inserted. Among them, the studs are prevented from loosening by using double nuts 1-3 or anti-loosening nuts, and the materials of the studs and nuts 1-3 are stainless steel; when connecting the nuts and studs, the tightening torque requirements must be met.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0044] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and intent of the present invention.

Claims

1. A method for assembling an omni-rotating propeller and a hull, characterized in that: The rudder propeller comprises an above-water part and an underwater part, the above-water part comprises a well (24) and a rotating tube (25), and the underwater part comprises a lower box (27); the rotating tube (25) is rotatably installed in the well (24), the bottom of the rotating tube (25) is output from the well (24) and is connected to the rotating tube (25) and the lower box in a detachable manner, and the lower input shaft (20) on the lower box (27) is plugged into the vertical shaft in the rotating tube (25) and spline-matched; The hull (1) is provided with a mounting hole (11) adapted to fit the enclosure well (24); The assembly method comprises the following steps: Step 1): hoist the above-water part into the mounting hole (11) of the hull (1) from top to bottom; Step 2): Weld the well (24) of the above-water part of the rudder propeller to the hull (1); Step 3): Check the welding quality and sealing, and review the position of the above-water part on the hull; Step 4): Lift the underwater part from bottom to top, so that the revolving tube (25) of the above-water part and the lower box (27) of the underwater part are fixedly connected, and the vertical shaft in the revolving tube (25) and the lower input shaft (20) of the lower box (27) are transmission-connected, and then the rudder propeller is assembled on the hull (1).

2. The method for assembling an azimuth propeller and a hull according to claim 1, characterized in that: The well enclosure (24) is fixed on the large flange (23) of the well box, and a plurality of lifting holes are arranged on the large flange (23) of the well enclosure, and the plurality of lifting holes are symmetrically arranged; in the above-mentioned step 1), the lifting equipment is connected to the lifting holes, and the above-water part of the rudder propeller is lifted on the hull (1).

3. The method for assembling an azimuth propeller and a hull according to claim 2, characterized in that: In the above step 1), before hoisting the above-water part, an auxiliary tooling (3) for adjusting the position of the enclosure well (24) is installed on the hull (1).

4. The method for assembling an azimuth propeller and a hull according to claim 3, characterized in that: The auxiliary tooling (3) comprises an L-shaped adjustment plate and an ejector bolt, the adjustment plate is fixed to the top of the large flange (23) of the manhole, and the ejector bolt is threadedly connected to the adjustment plate; a plurality of auxiliary toolings 3 are arranged around the mounting hole (11); after the above-water part is inserted into the mounting hole (11) of the hull (1), the ejector bolt is rotated so that one end of the ejector bolt pushes the above-water part of the rudder propeller, thereby adjusting the relative position of the above-water part and the mounting hole (11).

5. The method for assembling an azimuth propeller and a hull according to claim 1, characterized in that: In the above step 2), the enclosure is fixedly connected to the hull (1) by real-time symmetrical welding.

6. The method for assembling an azimuth propeller and a hull according to claim 1, characterized in that: A plurality of lifting points are arranged on the underwater part and the hull (1). In the above step 4), a lifting device is used to connect the preset lifting points (28) on the underwater part, and the underwater part is pulled upward to connect the underwater part with the above-water part.

7. The method for assembling an azimuth propeller and a hull according to claim 1, characterized in that: An upper matching flange (251) is provided at the bottom of the rotary tube (25), and a lower matching flange (271) is provided on the lower box body (27); both the upper matching flange (251) and the lower matching flange (271) are provided with through holes; In the above step 4), before hoisting the underwater part of the steering propeller, a pre-installed guide column (29) is installed on the upper matching flange (251) at the bottom of the slewing tube (25); when hoisting the underwater part, the guide column (29) is plugged into the assembly hole on the lower matching flange (271) to guide the underwater part of the steering propeller.

8. The method for assembling an azimuth propeller and a hull according to claim 7, characterized in that: After the spline fitting part meets the requirements, remove the guide column (29) and use studs to fix the upper mating flange (251) and the lower mating flange (271).

9. The method for assembling an azimuth propeller and a hull according to claim 8, characterized in that: After the upper mating flange (251) and the lower mating flange (271) are fixed, use a feeler gauge to check the clearance between the upper mating flange (251) and the lower mating flange (271).

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