Ship shafting block stage boring method

Abstract

The invention provides a stage boring method for a ship shafting block, and relates to the field of ship machining. An original process method is changed, and the stern shaft tube is moved to a general assembly platform to be bored in advance, so that the shafting boring operation environment can be improved, the labor intensity of workers is relieved, and the dock building period can be shortened more easily; besides, the stern tube is subjected to block expansion to form blocks, so that the overall structural strength of the shafting block can be enhanced, the influence of hoisting and welding on the stern tube area is effectively reduced, and the continuous and controllable boring quality is guaranteed; furthermore, compared with a small-size stern tube section, the stern shaft block is easier to position in a dock, the requirement on axis control after boring is relatively reduced, and site construction is facilitated; furthermore, propulsion system operations such as stern shaft installation and propeller installation can be carried out in advance through the method, so that the cabin integrity before the half ship floats is improved.

Description

Technical Field

[0001] The present application relates to the field of ship processing, and in particular to a method for boring holes in a ship shaft system overall section. Background Art

[0002] The shaft system is one of the key factors affecting the navigation performance of ships, and its installation accuracy is required to be high. For a long time, due to factors such as the quality of stern tube segment production and the ability to control the accuracy of positioning welding, most domestic shipyards can only bore the stern tube after the whole ship or half of the ship is floated, which prolongs the dock construction period. In order to improve this problem, at present, the solution of boring the stern tube in a vertical state in the segment stage is adopted; however, after the boring is completed in the segment stage, the stern tube segment needs to be hoisted into the dock for loading. The hoisting and welding of the segment has a great influence on the structural accuracy of the stern tube area, and the difficulty of controlling the centerline deviation of the shaft system and the roundness of the front end surface of the stern tube has increased exponentially, which puts forward higher operational requirements for the segment hoisting and assembly. Summary of the invention

[0003] In view of this, the purpose of the present application is to provide a method for boring holes in the overall section of a ship shaft system, so as to solve the current problem that the stern tube structure will produce secondary deformation and the accuracy is difficult to control due to hoisting, welding, etc. after boring holes in the section stage.

[0004] According to the above purpose, the present invention provides a method for boring holes in a ship shafting section, wherein the method for boring holes in a ship shafting section comprises the following steps:

[0005] S10: manufacturing the stern tube in sections;

[0006] S20: assembling the stern tube sections to form a stern tube section;

[0007] S30: boring the stern tube overall section;

[0008] S40: hoisting the stern tube section into the dock for loading and welding;

[0009] S50: Verify with shipowners and classification societies.

[0010] Preferably, step S30 includes:

[0011] S301: Disposing a plurality of support components on the outer wall of the stern tube main section;

[0012] S302: boring the stern tube;

[0013] S303: Separating the support assembly from the stern tube overall section.

[0014] Preferably, the support assembly comprises a transition piece adapted to correspond to the outer wall of the stern tube main section and a load-bearing piece detachably connected to the transition piece.

[0015] Preferably, the transition piece is welded to the outer wall of the stern tube overall section.

[0016] Preferably, after the transition piece is welded to the stern tube main section, the bottom surface of the transition piece is formed into a horizontal plane.

[0017] Preferably, the load bearing member is formed as a telescopic device.

[0018] Preferably, the shrunken end of the load-bearing member abuts against the bottom surface of the transition member.

[0019] Preferably, step S303 comprises: separating the load-bearing component from the transition component and separating the transition component from the stern tube overall section.

[0020] Preferably, the support assembly further comprises a dock.

[0021] Preferably, the dock is formed with a receiving portion corresponding to the stern tube overall section.

[0022] According to the method for boring the shaft system of a ship in the form of a block, the original process method is changed, and the stern tube is moved to the assembly platform for pre-boring, that is, the method sequentially includes manufacturing the stern tube in sections, assembling the stern tube block, boring the stern tube assembly in stages, hoisting the stern tube block for loading and welding in the dock, and submitting the results to the shipowner and the ship classification society for verification, which can improve the working environment for boring the shaft system, reduce the labor intensity of the workers, and be more conducive to shortening the dock construction period; in addition, the stern tube section is enlarged in sections to form a total section. The section can enhance the overall structural strength of the shaft system section, thereby effectively reducing the impact of hoisting and welding on the stern tube area, thereby ensuring that the boring quality is continuously controllable; further, compared with the small-sized stern tube sections, the stern shaft section is easier to position in the dock, and the requirements for axis control after boring are relatively reduced, which is convenient for on-site construction; further, the method is conducive to carrying out propulsion system operations such as stern shaft installation and propeller installation in advance, so as to improve the integrity of the engine room before the half-ship is floated.

[0023] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 is a flow chart of a method for boring a ship shafting section according to the present invention;

[0026] Figure 2 It is a schematic diagram of a ship shafting section and a part of a supporting assembly according to the present invention.

[0027] Icon: 1-stern tube; 2-transition piece; 3-load-bearing piece. DETAILED DESCRIPTION

[0028] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the methods, devices and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be apparent. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but in addition to the operations that must occur in a particular order, changes that will be apparent after understanding the disclosure of the present application may be made. In addition, in order to improve clarity and brevity, descriptions of features known in the art may be omitted.

[0029] The features described herein may be implemented in different forms and should not be interpreted as being limited to the examples described herein. Rather, the examples described herein have been provided only to illustrate some of the many possible ways of implementing the methods, devices and / or systems described herein that will be apparent after understanding the disclosure of the present application.

[0030] Throughout the specification, when an element (such as a layer, a region, or a substrate) is described as being “on”, “connected to”, “bound to”, “over”, or “covering” another element, it may be directly “on”, “connected to”, “bound to”, “over”, or “covering” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on”, “directly connected to”, “directly bound to”, “directly over”, or “directly covering” another element, there may be no other elements present between them.

[0031] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0032] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Therefore, without departing from the teachings of the examples described herein, the first member, component, region, layer, or portion referred to may also be referred to as the second member, component, region, layer, or portion.

[0033] For ease of description, spatial relational terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element will subsequently be "below" or "lower" relative to the other element. Therefore, the term "above" includes both "above" and "below" orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly.

[0034] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprise" and "have" list the stated features, quantities, operations, components, elements and / or their combinations that exist, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.

[0035] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0036] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0037] According to the present invention, a method for boring a ship shafting section is provided, such as Figure 1 As shown, the method for boring holes in the overall section of a ship shaft system of this embodiment comprises the following steps:

[0038] S10: manufacturing the stern tube 1 in sections;

[0039] S20: assembling the stern tube 1 in sections to form a stern tube 1 section;

[0040] S30: boring the entire section of the stern tube 1;

[0041] S40: hoisting the entire section of the stern tube 1 into the dock for loading and welding;

[0042] S50: Verify with shipowners and classification societies.

[0043] Specifically, the segmented manufacturing of the stern tube 1, the formation of the entire section of the stern tube 1, and the transportation of the entire section of the stern tube 1 to the dock for loading and welding are all existing processes. In this method, the existing processing technology can be used to complete this step, so it will not be repeated.

[0044] In addition, the above step S30 includes:

[0045] S301: Arrange a plurality of support components on the outer wall of the stern tube 1 overall section;

[0046] S302: boring the stern tube 1;

[0047] S303: Separating the support assembly from the stern tube 1 overall section.

[0048] In this embodiment, the support assembly includes a dock, which is formed with a receiving portion corresponding to the entire section of the stern tube 1. The dock is correspondingly arranged in the middle of the length direction of the entire section of the stern tube 1 to serve as a main load-bearing component. The dock also belongs to an existing structure, so its structure and the assembly method with the entire section of the stern tube 1 are not described in detail.

[0049] In addition, if Figure 2 As shown, the support assembly also includes a transition piece 2 corresponding to the outer wall of the stern tube 1 section and a load-bearing piece 3 detachably connected to the transition piece 2. After the above-mentioned dock achieves preliminary support for the stern tube 1 section, a plurality of transition pieces 2 are respectively welded to the outer wall of the tail end of the stern tube 1 section, and then the load-bearing piece 3 is abutted against the transition piece 2. The shape contour of the tail end of the stern tube 1 section can be flexibly adapted by the transition piece 2 and the load-bearing piece 3 to further provide support for the stern tube 1 section, thereby improving the stability when boring the stern tube 1, and further improving the accuracy of boring.

[0050] It should be noted that there are no specific restrictions on the number and welding positions of the transition piece 2, and they should be determined based on the actual situation, such as the structural profile of the tail end of the stern tube 1, as long as the above-mentioned technical effect can be achieved. In addition, there are no specific restrictions on the shape, structure and size of the transition piece 2, and they should also be determined based on the actual situation, such as the structural profile of the tail end of the stern tube 1, but it is necessary to ensure that after the transition piece 2 is welded to the overall section of the stern tube 1, the bottom surface of the transition piece 2 forms a horizontal plane, and the above-mentioned load-bearing piece 3 is connected to the bottom surface of the transition piece 2 to ensure the stability of the connection of the load-bearing piece 3, and then ensure its load-bearing effect.

[0051] Preferably, the load-bearing member 3 can be configured as a retractable device, such as a hydraulic device, so that the load-bearing member 3 can flexibly abut against the transition member 2 at different positions (i.e., at different heights). When the load-bearing member 3 is formed as a retractable device, the retracted end of the load-bearing member 3 abuts against the bottom surface of the transition member 2.

[0052] In addition, when the load-bearing member 3 is connected to the transition member 2, the load-bearing member 3 is only abutted against the bottom surface of the transition member 2. Therefore, in step S303, the load-bearing member 3 is first separated from the transition member 2 (at this time, the dock plays a major load-bearing role), and then the transition member 2 is separated from the stern tube 1 as a whole section, and the position of the stern tube 1 as a whole section for welding the transition member 2 is polished and painted.

[0053] According to the method for boring the shaft system of a ship in the overall section of the present invention, the original process method is changed, and the stern tube 1 is moved to the overall assembly platform for pre-boring, that is, the method sequentially includes stern tube segment manufacturing, stern tube overall section overall assembly, stern tube overall assembly stage boring, stern tube overall section hoisting and loading in the dock and welding, and verification with the shipowner and the ship classification society, which can improve the shaft system boring operation environment, reduce the labor intensity of workers, and is more conducive to shortening the dock construction period; in addition, the stern tube segment is enlarged in the overall section to form an overall The section can enhance the overall structural strength of the shaft system section, thereby effectively reducing the impact of hoisting and welding on the stern tube area, thereby ensuring that the boring quality is continuously controllable; further, compared with the small-sized stern tube sections, the stern shaft section is easier to position in the dock, and the requirements for axis control after boring are relatively reduced, which is convenient for on-site construction; further, the method is conducive to carrying out propulsion system operations such as stern shaft installation and propeller installation in advance, so as to improve the integrity of the engine room before the half-ship is floated.

[0054] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be described in the protection scope of the claims.

Claims

1. A method for boring a ship shafting section, characterized in that: The method for boring holes in the overall section of a ship shaft system comprises the following steps: S10: manufacturing the stern tube in sections; S20: assembling the stern tube sections to form a stern tube section; S30: boring the stern tube overall section; S40: hoisting the stern tube section into the dock for loading and welding; S50: Verify with shipowners and classification societies.

2. The method for boring a ship shafting section according to claim 1, characterized in that: Step S30 includes: S301: Disposing a plurality of support components on the outer wall of the stern tube main section; S302: boring the stern tube; S303: Separating the support assembly from the stern tube overall section.

3. The method for boring a ship shafting section according to claim 2, characterized in that: The support assembly comprises a transition piece adapted to correspond to the outer wall of the stern tube section and a load-bearing piece detachably connected to the transition piece.

4. The method for boring a ship shafting section according to claim 3 is characterized in that: The transition piece is welded to the outer wall of the stern tube overall section.

5. The method for boring a ship shafting section according to claim 4, characterized in that: After the transition piece is welded to the stern tube main section, the bottom surface of the transition piece is formed into a horizontal surface.

6. The method for boring a ship shafting section according to claim 5, characterized in that: The load-bearing member is formed as a telescopic device.

7. The method for boring a ship shafting section according to claim 6, characterized in that: The shrunken end of the load-bearing member abuts against the bottom surface of the transition member.

8. The method for boring a ship shafting section according to claim 4, characterized in that: Step S303 includes: separating the load-bearing component from the transition component and separating the transition component from the stern tube overall section.

9. The method for boring a ship shafting section according to claim 2, characterized in that: The support assembly also includes a dock.

10. The method for boring a ship shafting section according to claim 9, characterized in that: The dock is formed with a receiving portion corresponding to the stern tube overall section.

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