Stern shaft mounting method and ship

Abstract

The invention relates to the technical field of ships, and particularly discloses a stern shaft mounting method and a ship, and the stern shaft mounting method comprises the following steps: S10, manufacturing a stern shaft tube at the stern of the ship at a platform stage; s20, whether the deformation of the stern shaft tube is affected by the uncompleted machining technology near the stern shaft tube or not is judged, if yes, S21 is executed, and if not, S30 is executed; s21, executing a machining process which is not completed near the stern shaft tube and affects deformation of the stern shaft tube, and executing S30; s30, the shafting center line of the stern shaft tube is determined through stay wire irradiation; s40, boring the stern shaft tube; s50, the ship is transported to a dock, and a stern shaft tube bearing is installed in a stern shaft tube; and S60, the stern shaft is installed on a stern shaft tube bearing. By manufacturing the stern shaft tube in the platform stage, boring the stern shaft tube and completing the installation work of the stern shaft in the dock stage, favorable conditions are created for improving the integrity of a cabin before the ship is undocked, a foundation is laid for immediately hoisting a main engine after floating, carrying out shafting centering in the dock and carrying out main engine oil feeding work, and the building efficiency of the ship is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ships, and in particular to a stern shaft installation method and a ship. Background Art

[0002] With the continuous development of the shipbuilding industry, how to complete the manufacturing of ships efficiently and with high quality is becoming a direction that the industry is constantly pursuing.

[0003] In the prior art, the installation of the stern shaft usually occurs after the ship leaves the dock. Therefore, the processes such as the propeller installation and the main engine installation associated with the stern shaft need to be postponed accordingly, thereby extending the overall manufacturing cycle of the ship.

[0004] Therefore, a stern shaft installation method is urgently needed to shorten the overall manufacturing cycle of the ship. Summary of the invention

[0005] The purpose of the present invention is to provide a stern shaft installation method and a ship, so as to solve the problem that the installation of the stern shaft in the related art usually occurs after the ship leaves the dock, thereby causing a long overall manufacturing cycle of the ship.

[0006] In one aspect, the present invention provides a method for installing a stern shaft of a ship, the method comprising:

[0007] S10: Manufacturing the stern tube at the stern of the ship at the platform stage;

[0008] S20: determining whether the unfinished processing technology near the stern tube affects the deformation of the stern tube, if yes, executing S21, if no, executing S30;

[0009] S21: executing the processing technology that is not completed near the stern tube and affects the deformation of the stern tube, and executing S30;

[0010] S30: Use a wire to illuminate the shaft to determine the shaft centerline of the stern tube;

[0011] S40: boring the stern tube;

[0012] S50: the ship is transported to a dock, and a stern tube bearing is installed in the stern tube;

[0013] S60: The stern shaft is installed on the stern tube bearing.

[0014] As a preferred technical solution for the stern shaft installation method, in S20, the processing technology includes a stern tube cooling water tank tightness strength test and a rib welding process.

[0015] As the preferred technical solution for the stern shaft installation method, S30 specifically includes:

[0016] S301: arranging the center line of the stern tube in a horizontal direction;

[0017] S302: a plurality of reference targets are arranged at intervals from the head end to the tail end of the stern tube;

[0018] S303: placing a globe on the centerline of the inner bottom plate hull and aligning it with a bow reference target and a stern reference target among the plurality of reference targets to find a centerline of an axis system;

[0019] S304: The deviation of the centerline of the shafting from the hull baseline should be ≤±10mm for the upper and lower deviations and ≤±7mm for the left and right deviations;

[0020] S305: If the inner radius deviation of the stern tube is greater than 10 mm, yes, execute S306; no, execute S40;

[0021] S306: Correct the position of the axis centerline and execute S304.

[0022] As a preferred technical solution for the stern shaft installation method, S50 includes:

[0023] S501: making the temperature of the stern tube and the stern tube bearing equal to the ambient temperature;

[0024] S502: applying molybdenum disulfide to the outer ring of the stern tube bearing and the bearing seat in the stern tube;

[0025] S503: Press the stern tube bearing into the bearing seat.

[0026] As a preferred technical solution of the ship stern shaft installation method, before executing S501, S500 is first executed, S500: removing burrs and dirt on the inner wall of the stern tube and the stern tube bearing.

[0027] As a preferred technical solution for the stern shaft installation method, it also includes:

[0028] S504: Compare the pressure value corresponding to the displacement of the stern tube bearing pressed into the bearing seat with a preset pressure value. If the pressure value is within the preset pressure value, execute S505; otherwise, execute S506;

[0029] S505: Whether the coaxiality of the inner ring of the stern tube bearing is within the error range, if yes, execute S60, if no, execute S506;

[0030] S506: Replace the stern tube bearing and execute S501.

[0031] As a preferred technical solution for the stern shaft installation method, S505 specifically includes:

[0032] S5051: placing optical targets on the inner ring of the stern tube bearing in sequence to set measuring points and record data of the measuring points;

[0033] S5052: adjusting the center of the optical target of each measuring point to be located on the same light beam, and recording the adjusted data of the measuring point;

[0034] S5053: Compare the adjusted data with the data before adjustment. If the deviation in the up-down direction is less than 0.05 mm and the deviation in the left-right direction is less than 0.05 mm, execute S60; otherwise, execute S506.

[0035] As the preferred technical solution for the stern shaft installation method, S60 specifically includes:

[0036] S601: inserting the stern shaft into the inner ring of the stern tube bearing;

[0037] S602: Make the gap between the stern shaft and the inner ring of the stern tube bearing uniform.

[0038] As a preferred technical solution of the ship stern shaft installation method, it also includes S603: inserting sealing plugs into both ends of the stern shaft tube.

[0039] On the other hand, the present invention also provides a ship, wherein the stern shaft is installed by the ship stern shaft installation method described in any of the above schemes.

[0040] The beneficial effects of the present invention are:

[0041] The present invention provides a ship stern shaft installation method and a ship. The ship stern shaft installation method comprises: S10: manufacturing a stern tube at the stern of the ship in the platform stage; S20: judging whether an unfinished processing technology near the stern tube affects the deformation of the stern tube, if yes, executing S21, if not, executing S30; S21: executing an unfinished processing technology near the stern tube that affects the deformation of the stern tube, executing S30; S30: determining the shaft system center line of the stern tube by pulling a wire and illuminating; S40: boring a hole for the stern tube; S50: transporting the ship to a dock, and installing a stern tube bearing in the stern tube; S60: installing the stern shaft on the stern tube bearing. By manufacturing the stern tube at the platform stage, boring the stern tube, and completing the stern shaft installation work at the dock stage, favorable conditions are created to improve the integrity of the engine room before the ship leaves the dock, laying the foundation for immediately hoisting the main engine after floating, carrying out shaft system centering and main engine oiling work in the dock, effectively shortening the construction period in the dock and improving the construction efficiency of the ship. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 Schematic diagram of the structure of the stern shaft installation method in an embodiment of the present invention;

[0043] Figure 2The structure diagram of the stern of a ship according to an embodiment of the present invention is shown in FIG. Figure 1 ;

[0044] Figure 3 The structure diagram of the stern of a ship according to an embodiment of the present invention is shown in FIG. Figure 2 .

[0045] In the figure:

[0046] 1. The stern of the ship; 11. The stern tube;

[0047] 2. Stern tube bearing;

[0048] 3. Reference target; 31. Forward reference target; 32. Rear reference target;

[0049] 4. Light target. DETAILED DESCRIPTION

[0050] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0052] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 indirectly connected 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.

[0053] Embodiments of the present invention are described in detail below, examples of which 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0054] like Figure 1 to Figure 3 As shown, this embodiment provides a stern shaft installation method, and the stern shaft installation method includes:

[0055] S10: Manufacturing the stern tube 11 at the stern 1 of the ship at the platform stage. The platform stage specifically refers to the stage before the ship enters the dock.

[0056] In this step, the stern tube 11 is first installed to the stern of the ship. Specifically, the stern tube 11 is a whole section.

[0057] S20: Determine whether the unfinished processing technology near the stern tube 11 affects the deformation of the stern tube 11. If yes, execute S21; if no, execute S30. In this step, after the boring process of the stern tube 11 is completed, in order to prevent other processes from causing deformation to the stern tube 11, the processes near the stern tube 11 that affect the deformation of the stern tube 11 need to be completed. Specifically, it includes the rib welding process and the tightness strength test report of the stern tube cooling water tank.

[0058] S21: Execute the processing technology that is not completed near the stern tube 11 and affects the deformation of the stern tube 11, and execute S30;

[0059] In this step, the processes that are likely to cause deformation of the stern tube 11 are completed, so that the influence of the related processes on the stern tube 11 can be avoided. Then, the next step can be performed.

[0060] like Figure 2 As shown, S30: determine the shaft center line of the stern tube 11 by pulling the wire and shining the light.

[0061] In this step, the following specific steps are used to determine the position of the axis centerline of the stern tube 11, and then prepare for the subsequent boring of the stern tube 11. S30 specifically includes: S301: set the centerline of the stern tube 11 in the horizontal direction; S302: set multiple reference targets 3 at intervals from the head end to the tail end of the stern tube 11; S303: set the globe on the centerline of the inner bottom plate hull, and align the head reference target 31 and the tail reference target 32 ​​among the multiple reference targets 3 to find a axis centerline; S304: the deviation of the axis centerline from the hull baseline should be ≤±10mm for the upper and lower deviations, and ≤±7mm for the left and right deviations; S305: if the inner radius deviation of the stern tube 11 is greater than 10mm, yes, execute S306; no, execute S40; S306: correct the position of the axis centerline and execute S304.

[0062] S40: boring the stern tube 11.

[0063] In this step, a total section boring process is adopted, which can improve the processing quality of the hole.

[0064] S50: The ship is transported to the dock, and the stern tube bearing 2 is installed into the stern tube 11.

[0065] This step mainly involves installing the stern tube bearing 2 into the stern tube 11 to achieve rotation of the stern shaft in the stern tube 11 .

[0066] S50 specifically includes:

[0067] S500: Clear the burrs and dirt on the inner wall of the stern tube 11 and the stern tube bearing 2.

[0068] In this step, burrs and dirt will remain inside the stern tube 11 and on the stern tube bearing 2. If they are not cleaned, the installation error will increase, the coaxiality will decrease, and the precise installation of the stern shaft will be affected. Therefore, when installing the stern tube bearing 2, the burrs and dirt inside the stern tube 11 and on the stern tube bearing 2 need to be cleaned.

[0069] S501: Make the temperature of the stern tube 11 and the stern tube bearing 2 equal to the ambient temperature.

[0070] In this step, according to the principle of thermal expansion and contraction, when the temperatures of the stern tube 11 and the stern tube bearing 2 are different, their respective expansion ratios are different. If the stern tube 11 and the stern tube bearing 2 are installed at this time, when the temperatures of the stern tube 11 and the stern tube bearing 2 reach the room temperature, the installation error of the stern tube 11 and the stern tube bearing 2 will increase. Therefore, when installing the stern tube 11 and the stern tube bearing 2, it is necessary to make the temperatures of the stern tube 11 and the stern tube bearing 2 equal to the room temperature.

[0071] S502: Apply molybdenum disulfide to the outer ring of the stern tube bearing 2 and the bearing seat in the stern tube 11.

[0072] In this step, molybdenum disulfide is mainly used as a solid lubricant, which is particularly suitable for high temperature and high pressure environments. This setting can reduce the friction between the outer ring of the stern tube bearing 2 and the bearing seat in the stern tube 11, thereby facilitating the pressing of the stern tube bearing 2 into the bearing seat in the stern tube 11.

[0073] S503: Press the stern tube bearing 2 into the bearing seat.

[0074] S504: Compare the pressure value corresponding to the displacement of the stern tube bearing 2 pressed into the bearing seat with the preset pressure value. If the pressure value is within the preset pressure value, execute S505; otherwise, execute S506.

[0075] In this step, the preset pressure value is the pressure value corresponding to the displacement of the stern tube bearing 2 pressed into the bearing seat during the process of correctly pressing the stern tube bearing 2 into the bearing seat. The pressure value changes with the displacement value, and the preset pressure value is a range value. If the pressure value corresponding to the displacement of the stern tube bearing 2 pressed into the bearing seat is included in the preset pressure value under the same displacement, it means that the stern tube bearing 2 is correctly installed, and S505 is performed. If not, it means that it is not correctly installed, so S506 is performed: replace the stern tube bearing 2, and S501 is performed.

[0076] S505: Whether the coaxiality of the inner ring of the stern tube bearing 2 is within the error range, if yes, execute S60, if not, execute S506; in this step, the coaxiality of the inner ring of the stern tube bearing 2 is measured to verify whether its coaxiality meets the requirements.

[0077] S505 specifically includes:

[0078] like Figure 3 As shown, S5051: optical targets 4 are sequentially placed on the inner ring of the stern tube bearing 2 to set measurement points and record the data of the measurement points. In this step, the inner ring of the stern tube bearing 2 includes two mutually connected conical holes, so three optical targets 4 are arranged on each conical hole along its axial direction.

[0079] S5052: Adjust the center of the light target 4 of each measuring point to be on the same light beam, and record the data of the measuring point after adjustment; S5053: Compare the adjusted data with the data before adjustment. If the deviation in the up-down direction is less than 0.05mm, and the deviation in the left-right direction is less than 0.05mm, execute S60; otherwise, execute S506.

[0080] S60: The stern shaft is installed on the stern tube bearing 2.

[0081] In this step, the stern shaft is installed on the stern shaft tube bearing 2, thereby completing the installation of the stern shaft of the ship.

[0082] S60 specifically includes:

[0083] S601: insert the stern shaft into the inner ring of the stern tube bearing 2.

[0084] S602: Make the gap between the stern shaft and the inner ring of the stern tube bearing 2 uniform.

[0085] In this step, this arrangement can ensure that the oil film between the stern shaft and the inner ring of the stern tube bearing 2 is evenly covered, thereby reducing the friction and wear between the stern shaft and the inner ring of the stern tube bearing 2.

[0086] S603: Sealing plugs are inserted into both ends of the stern tube 11.

[0087] In this step, internal threads are respectively provided at both ends of the stern tube 11 , and two sealing plugs are respectively sleeved on the stern shaft and threadedly connected to the inner walls of the two ends of the stern tube 11 .

[0088] By manufacturing the stern tube 11 in the platform stage, boring the stern tube 11, and completing the stern shaft installation work in the dock stage, favorable conditions are created for improving the integrity of the engine room before the ship leaves the dock, laying the foundation for immediately hoisting the main engine after floating, carrying out the shaft system centering and main engine oiling work in the dock, effectively shortening the construction period in the dock and improving the construction efficiency of the ship.

[0089] This embodiment also provides a ship, and the stern shaft is installed by the ship stern shaft installation method in the above solution.

[0090] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A method for installing a stern shaft, characterized in that: include: S10: manufacturing a stern tube (11) at the stern of the ship (1) at the platform stage; S20: determining whether the unfinished processing technology near the stern tube (11) affects the deformation of the stern tube (11); if yes, executing S21; if no, executing S30; S21: executing a processing technology that is not completed near the stern tube (11) and affects the deformation of the stern tube (11), and executing S30; S30: Determine the shaft centerline of the stern tube (11) by pulling a wire and shining a light; S40: boring the stern tube (11); S50: the ship is transported to a dock, and the stern tube bearing (2) is installed in the stern tube (11); S60: The stern shaft is mounted on the stern tube bearing (2).

2. The method for installing a stern shaft of a ship according to claim 1, characterized in that: In S20, the processing technology includes a stern tube cooling water tank tightness strength test and a rib welding process.

3. The method for installing a stern shaft of a ship according to claim 1, characterized in that: S30 specifically includes: S301: arranging the center line of the stern tube (11) in a horizontal direction; S302: a plurality of reference targets (3) are arranged at intervals from the head end to the tail end of the stern tube (11); S303: placing a globe on the centerline of the inner bottom plate hull and aligning it with a bow reference target (31) and a stern reference target (32) among the plurality of reference targets (3) to find a shaft system centerline; S304: The deviation of the centerline of the shafting from the hull baseline should be ≤±10mm for the upper and lower deviations and ≤±7mm for the left and right deviations; S305: If the inner radius deviation of the stern tube (11) is greater than 10 mm, then yes, execute S306; otherwise, execute S40; S306: Correct the position of the axis centerline and execute S304.

4. The method for installing a stern shaft of a ship according to claim 1, characterized in that: S50 includes: S501: making the temperature of the stern tube (11) and the stern tube bearing (2) equal to the ambient temperature; S502: applying molybdenum disulfide to the outer ring of the stern tube bearing (2) and the bearing seat in the stern tube (11); S503: Pressing the stern tube bearing (2) into the bearing seat.

5. The method for installing a stern shaft of a ship according to claim 4, characterized in that: Before executing S501, first execute S500, S500: remove burrs and dirt on the inner wall of the stern tube (11) and the stern tube bearing (2).

6. The method for installing a stern shaft of a ship according to claim 4, characterized in that: The S50 also includes: S504: comparing the pressure value corresponding to the displacement of the stern tube bearing (2) pressed into the bearing seat with a preset pressure value; if the pressure value is within the preset pressure value, executing S505; if not, executing S506; S505: Whether the coaxiality of the inner ring of the stern tube bearing (2) is within the error range, if yes, execute S60, if no, execute S506; S506: Replace the stern tube bearing (2) and execute S501.

7. The method for installing a stern shaft of a ship according to claim 6, characterized in that: S505 specifically includes: S5051: placing optical targets (4) on the inner ring of the stern tube bearing (2) in sequence to set measurement points and record data of the measurement points; S5052: adjusting the center of the optical target (4) of each measuring point to be located on the same light beam, and recording the data of the measuring point after adjustment; S5053: Compare the adjusted data with the data before adjustment. If the deviation in the up-down direction is less than 0.05 mm and the deviation in the left-right direction is less than 0.05 mm, execute S60; otherwise, execute S506.

8. The method for installing a stern shaft of a ship according to claim 1, characterized in that: S60 specifically includes: S601: inserting the stern shaft into the inner ring of the stern shaft tube bearing (2); S602: Make the gap between the stern shaft and the inner ring of the stern shaft tube bearing (2) uniform.

9. The method for installing a stern shaft of a ship according to claim 8, characterized in that: The method also includes S603: inserting sealing plugs into both ends of the stern tube (11).

10. A vessel, characterized in that The stern shaft is installed by the ship stern shaft installation method according to any one of claims 1 to 9.

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