Installation Method for the Positioning of the Rudder Turning Module of a Cruise Ship

Abstract

The present invention discloses an installation method for positioning a steering module of a cruise ship, which includes a propeller section. The inner bottom plate of the propeller section is provided with an inner bottom plate rudder hole. The installation method includes: Step S1, determining the position of the center of the inner bottom plate rudder hole; Step S2, making an outer bottom plate contour line and the center position of the outer bottom plate rudder hole on the upper surface of the outer bottom plate according to the position of the center of the inner bottom plate rudder hole and the projections of the inner bottom plate rudder hole along the axis of the inner bottom plate rudder hole respectively; Step S3, placing the steering module into the inner bottom plate rudder hole, so that the projection of the center position of the steering module along the axis of the inner bottom plate rudder hole is aligned and matched with the center position of the outer bottom plate rudder hole, and cutting the outer bottom plate rudder hole along the contour of the steering module; Step S4, installing and connecting the steering module with the propeller section, so that the bottom of the steering module can be exposed from the outer bottom plate rudder hole. This enables the steering module to be accurately installed on the propeller section.

Description

Technical Field

[0001] The present invention relates to the field of shipbuilding, and particularly to an installation method for positioning a rudder turning module of a cruise ship. Background Art

[0002] A podded propeller is a highly efficient electromechanical coupled propulsion device integrating propulsion and steering devices. It is small in size, light in weight, flexible in construction, and can rotate 360° horizontally to achieve vector propulsion. It can improve the maneuverability and speed of a ship while reducing the noise in the engine room. After more than 30 years of development, the podded propulsion technology has gradually matured, and its application on high-end ships has reached 80%. The rudder turning module mainly adopts precision control technology, and its weight is as high as 70 tons. If it is not installed properly, it will have an adverse impact on the speed and streamline driving of the cruise ship, greatly increasing the potential safety hazards of the rudder turning and navigation of the cruise ship. Currently, when installing the rotary rudder module, holes are drilled on the upper bottom plate and the lower bottom plate respectively. Since the lower bottom plate is arc-shaped, the holes on the upper bottom plate cannot match the holes on the lower bottom plate, resulting in the installation accuracy of the cruise ship rudder turning module not meeting the requirements when the rotary rudder module is installed. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defect in the prior art that due to the arc shape of the lower bottom plate, the holes on the upper bottom plate cannot match the holes on the lower bottom plate, resulting in the installation accuracy of the cruise ship rudder turning module not meeting the requirements when the rotary rudder module is installed, and to provide an installation and positioning method for the cruise ship rudder turning module.

[0004] The present invention solves the above technical problem through the following technical solutions:

[0005] An installation method for positioning a rudder turning module of a cruise ship includes a propeller segment, and an inner bottom plate of the propeller segment is provided with an inner bottom plate rudder hole. The installation method includes: Step S1, determining the position of the center of the inner bottom plate rudder hole; Step S2, making an outer bottom plate contour line and the position of the center of the outer bottom plate rudder hole on the upper surface of the outer bottom plate according to the position of the center of the inner bottom plate rudder hole and the projections of the inner bottom plate rudder hole along the axis of the inner bottom plate rudder hole respectively; Step S3, placing the rudder turning module into the inner bottom plate rudder hole, so that the projection of the center position of the rudder turning module along the axis of the inner bottom plate rudder hole is aligned and matched with the position of the center of the outer bottom plate rudder hole, and cutting the outer bottom plate rudder hole along the contour of the rudder turning module; Step S4, installing and connecting the rudder turning module and the propeller segment, so that the bottom of the rudder turning module can be exposed from the outer bottom plate rudder hole.

[0006] In this solution, the above method is adopted to achieve that the center of the rudder hole of the inner bottom plate and the center of the steering module can be kept on the same axis along the vertical direction, so that the steering module can be accurately matched with the rudder hole of the inner bottom plate. The rudder hole of the outer bottom plate is arranged according to the outer contour of the steering module, so that the center of the rudder hole of the outer bottom plate and the center of the steering module can also be kept on the same axis along the vertical direction. The steering module can be accurately installed on the thruster segment. And it avoids the outer bottom plate rudder hole and the inner bottom plate rudder hole being not on the same axis due to the setting of the arc surface of the outer bottom plate, thereby improving the installation accuracy of the cruise ship steering module.

[0007] Preferably, the step S3 specifically includes: drawing a margin hole according to a preset margin line of the rudder hole of the inner bottom plate of the thruster segment; cutting the margin hole; placing the steering module into the rudder hole of the inner bottom plate; cutting the rudder hole of the outer bottom plate according to the projection of the steering module on the upper surface of the outer bottom plate, so that the rudder hole of the inner bottom plate is connected with the rudder hole of the outer bottom plate.

[0008] In this solution, the above method is used to achieve accurate opening of the rudder hole in the outer bottom plate, so that the steering module can be accurately installed with the thruster segment, and ensure that the centers of the rudder hole in the inner bottom plate, the steering module and the rudder hole in the outer bottom plate are located on the same axis along the vertical direction.

[0009] Preferably, the step S4 specifically includes: making a segment contour line and a ground center position below the thruster segment according to the position of the center of the inner bottom plate rudder hole and the projection of the inner bottom plate rudder hole along the axis of the inner bottom plate rudder hole; aligning the projection of the center position of the steering module along the axis of the inner bottom plate rudder hole with the ground center position, and installing and connecting the steering module with the thruster segment so that the bottom of the steering module can be exposed from the outer bottom plate rudder hole.

[0010] In the present scheme, the above-mentioned method is adopted, and it is possible to achieve that by setting the ground center position as a reference under the thruster segment, the steering module can be prevented from being offset due to the influence of external forces during installation, so that the thruster segment can be maintained in the original position with the ground center position as a reference, thereby further improving the installation accuracy of the steering module during installation.

[0011] Preferably, there are multiple thruster sections, and the installation method for positioning the cruise ship steering module also includes: assembling the multiple thruster sections in sequence along the horizontal direction to form a thruster overall section; and assembling the thruster overall section with the stern of the hull.

[0012] In this solution, by adopting the above method, the thruster segments can be assembled into the thruster main section, and the thruster main section can be installed at the stern of the hull, enabling the thruster main section to achieve the propulsion and driving effect on the hull. The thruster main section is composed of thruster segments, and multiple thruster segments can be manufactured synchronously, improving the installation efficiency and accuracy.

[0013] Preferably, in the step of assembling multiple said thruster segments along the horizontal direction in sequence to form the thruster main section: multiple said thruster segments are symmetrically manufactured with respect to the hull center line to form the thruster main section.

[0014] In this solution, by adopting the above method, the thruster segments can be distributed on both sides of the hull, so that the steering modules installed on the thruster segments can also be symmetrically distributed on both sides of the hull. This ensures the correct navigation of the hull, and the symmetrically distributed steering modules can ensure the synchronization of steering and ensure the course direction.

[0015] Preferably, the step of assembling the thruster main section with the hull tail specifically includes: tilting the side of the thruster main section away from the hull upwards, so that the extension direction of the thruster main section forms a preset angle with the horizontal direction; drawing a positioning reference line on the ground of the dock according to the projection of the contour of the steering module and the hull center line along the vertical direction; ensuring that the projection of the steering module and the hull center line along the vertical direction coincides with the positioning reference line during the welding of the thruster main section.

[0016] In this solution, by adopting the above method, the thruster main section can be kept at a preset angle with the horizontal direction, so that the thruster can be in a horizontal state in the water after the hull is launched. By setting the positioning reference line, when the thruster main section is installed, the projection of the steering module and the hull center line along the vertical direction can coincide with the positioning reference line, ensuring that the preset angle is at the correct angular value, thereby guaranteeing the installation accuracy of the steering module.

[0017] Preferably, after the step of assembling the thruster main section with the hull tail, it further includes:

[0018] Installing the stern main section above the thruster main section, and ensuring that the angle between the thruster main section and the horizontal plane is the same as the preset angle during installation; ensuring that the projection of the steering module and the hull center line along the vertical direction coincides with the positioning reference line.

[0019] In this solution, by adopting the above method, when the stern main section is installed, it can be ensured that the angle between the thruster main section and the horizontal plane is consistent with the preset angle, ensuring the upward tilt degree of the thruster main section and avoiding sinking from affecting the effect of the thruster.

[0020] Preferably, after the step of installing the stern section above the thruster section, the following steps are further included: installing the propulsion device from the lower surface of the outer bottom plate; connecting the propulsion device to the steering module; ensuring that the projection of the steering module and the hull center line along the gravity direction coincides with the positioning reference line.

[0021] In this solution, by adopting the above method, the propulsion device can be connected to the steering module, and when the steering module rotates, it can drive the propulsion device to achieve steering, thereby changing the running direction of the ship.

[0022] Preferably, after the step of installing the propulsion device from the lower surface of the outer bottom plate, the following steps are further included: positioning and installing the HEAD-BOX on the lower surface of the outer bottom plate; ensuring that the projection of the steering module and the hull center line along the gravity direction coincides with the positioning reference line.

[0023] In this solution, by adopting the above method, when the HEAD-BOX is positioned and installed, it can be ensured that the angle between the thruster section and the horizontal plane is consistent with the preset angle, ensuring the upward warping degree of the thruster section and avoiding sinking from affecting the effect of the thruster.

[0024] Preferably, the length of the preset margin line of the rudder hole is 100 mm.

[0025] In this solution, by adopting the above structural form, a margin line with a length of 100 mm can be set to judge the error value when the rudder holes of the outer bottom plate and the inner bottom plate are opened, and by compensating for the error value, the installation accuracy of the steering module is ensured.

[0026] The positive and progressive effects of the present invention are as follows: By determining the central positions of the rudder holes of the inner bottom plate, the steering module and the rudder holes of the outer bottom plate, the rudder holes of the inner bottom plate, the steering module and the rudder holes of the outer bottom plate can be located on the same axis in the vertical direction, thereby ensuring the installation accuracy of the steering module. And by the markings on the ground, the angle between the thruster section and the horizontal plane is ensured, so that the thruster can work normally after the hull is launched into the water, and the steering module can steer the thruster. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a flowchart of the installation method for positioning the steering module of a cruise ship according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The present invention will be further described below by way of examples, but the present invention is not limited to the scope of the described examples.

[0029] As Figure 1As shown in the figure, this embodiment discloses an installation method for positioning a rudder turning module of a cruise ship, including a propeller segment. The inner bottom plate of the propeller segment is provided with an inner bottom plate rudder hole. The installation method includes: Step S1, determining the position of the center of the inner bottom plate rudder hole;

[0030] In this embodiment, by setting a central cross line in the inner bottom plate rudder hole, the position of the center of the inner bottom plate rudder hole is determined by finding the center of the cross line. In other embodiments, the determination form may not be limited.

[0031] Step S2, making an outer bottom plate contour line and the center position of the outer bottom plate rudder hole on the upper surface of the outer bottom plate according to the position of the center of the inner bottom plate rudder hole and the projections of the inner bottom plate rudder hole along the axis of the inner bottom plate rudder hole respectively; Step S3, placing the rudder turning module into the inner bottom plate rudder hole, so that the projection of the center position of the rudder turning module along the axis of the inner bottom plate rudder hole is aligned and matched with the center position of the outer bottom plate rudder hole, and cutting the outer bottom plate rudder hole along the contour of the rudder turning module; Step S4, installing and connecting the rudder turning module with the propeller segment, so that the bottom of the rudder turning module can be exposed from the outer bottom plate rudder hole. The inner bottom plate rudder hole of the propeller segment has been cut before installing the rudder turning module, and the center of the rudder turning module can be marked before the manufacturer delivers the goods. When installing the rudder turning module, the inner bottom plate rudder hole needs to be concentric with the rudder turning module. The center of the inner bottom plate rudder hole and the center of the rudder turning module can be kept on the same axis along the vertical direction, so that the rudder turning module can be accurately matched with the inner bottom plate rudder hole. Since the inner bottom plate rudder hole and the rudder turning module are concentrically arranged and can be located on the same axis along the vertical direction, the outer bottom plate rudder hole is set according to the outer contour of the rudder turning module, so that the center of the outer bottom plate rudder hole and the center of the rudder turning module can also be kept on the same axis along the vertical direction, and the centers of the outer bottom plate rudder hole and the inner bottom plate rudder hole can also be located on the same axis along the vertical direction, so that the outer bottom plate rudder hole and the inner bottom plate rudder hole are concentric along the vertical direction and can be projected and overlapped. So that the rudder turning module can be accurately installed on the propeller segment. And it avoids that the outer bottom plate rudder hole and the inner bottom plate rudder hole are not on the same axis due to the setting of the outer bottom plate arc surface.

[0032] In this embodiment, step S3 specifically includes: drawing a margin hole according to the preset margin line of the inner bottom plate rudder hole in the thruster segment; cutting the margin hole; placing the steering module into the inner bottom plate rudder hole; cutting the outer bottom plate rudder hole according to the projection of the steering module on the upper surface of the outer bottom plate, so that the inner bottom plate rudder hole and the outer bottom plate rudder hole are penetrated, and accurate opening of the outer bottom plate rudder hole can be achieved. The surface of the outer bottom plate is arc-shaped, and it is impossible to directly draw and cut the rudder hole through the lower surface of the outer bottom plate. By placing the steering module from the inner bottom plate rudder hole and projecting it on the upper surface of the outer bottom plate, the projected outer bottom plate rudder hole can be used to install the steering module. Since the outer bottom plate rudder hole and the inner bottom plate rudder hole are located on the same axis in the vertical direction, the steering module can be accurately installed with the thruster segment, and it is ensured that the centers of the inner bottom plate rudder hole, the steering module, and the outer bottom plate rudder hole are located on the same axis in the vertical direction, so that no deviation occurs during the installation of the steering module.

[0033] In this embodiment, step S4 specifically includes:

[0034] Step S41: Make a sectional outline line and a ground center position below the thruster segment according to the position of the center of the inner bottom plate rudder hole and the projections of the inner bottom plate rudder hole along the axis of the inner bottom plate rudder hole respectively;

[0035] Step S42: Align and match the projection of the center position of the steering module along the axis of the inner bottom plate rudder hole with the ground center position, and install and connect the steering module with the thruster segment, so that the bottom of the steering module can be exposed from the outer bottom plate rudder hole. When installing the steering module, since the steering module needs to act on the thruster segment, the thruster segment will move and deviate slightly under the action of external force.

[0036] In this embodiment, by setting a ground center position below the thruster segment as a reference, the installation accuracy of the steering module can be ensured through the projection of the rudder hole on the ground during installation, so that the thruster segment can maintain its original installation attitude. It is avoided that the thruster segment is offset due to the influence of external force, so that the thruster segment can be kept in its original position with reference to the ground center position, ensuring the installation accuracy of the steering module during installation.

[0037] The number of thruster segments is multiple, and the installation method for positioning the cruise ship steering module further includes:

[0038] Step S10: Assemble multiple thruster segments horizontally in sequence to form a thruster general segment;

[0039] Step S20: Assemble the thruster assembly with the stern of the hull. In this embodiment, the number of thruster segments is 2. The two thruster segments are symmetrically assembled about the hull centerline to form the thruster assembly, and the thruster assembly is installed at the stern of the hull so that the thruster assembly can achieve the propulsion and driving effect on the hull. The installation of the steering modules is carried out simultaneously for the two thruster segments, and after the installation is completed, they are assembled into the thruster assembly. The two thruster assemblies are symmetrically distributed on both sides of the bottom of the hull, which can provide more propulsion force for the hull, and the symmetrical distribution can achieve synchronous operation, ensuring the balance of propulsion. In other embodiments, the number of thruster segments can be adjusted according to actual needs, and the specific number of thruster segments is not limited here.

[0040] In the step of sequentially assembling multiple thruster segments along the horizontal direction to form the thruster assembly: The multiple thruster segments are symmetrically made about the hull centerline to form the thruster assembly. In this embodiment, the number of thruster segments is two, which can achieve the distribution of the two thruster segments on both sides of the hull, so that the two steering modules installed on the thruster segments can also be symmetrically distributed on both sides of the hull. This ensures the correct navigation of the hull, and the symmetrically distributed steering modules can ensure the synchronism of steering, and ensure the course direction when the two thrusters are working.

[0041] In this embodiment, step S20 specifically includes:

[0042] Step S201: Lift up the side of the thruster assembly away from the hull so that the extension direction of the thruster assembly forms a preset angle with the horizontal direction;

[0043] Step S202: Draw a positioning reference line on the ground of the dock according to the contour of the steering module and the projection of the hull centerline along the vertical direction;

[0044] Step S203: Ensure that the projection of the steering module and the hull centerline along the vertical direction coincides with the positioning reference line during the welding of the thruster assembly. It can be achieved that the thruster assembly forms a preset angle with the horizontal direction so that the thruster can be in a horizontal state in the water after the hull is launched. By setting the positioning reference line, when the thruster assembly is installed, the projection of the steering module and the hull centerline along the vertical direction can coincide with the positioning reference line, and by continuously comparing with the positioning reference line, it is ensured that the preset angle is at the correct angular value to meet the requirements during launching.

[0045] In this embodiment, after the step of assembling the thruster subassembly and the stern of the hull, the following steps are further included: installing the stern subassembly above the thruster subassembly, and ensuring that the angle between the thruster subassembly and the horizontal plane is the same as the preset angle during installation; ensuring that the projection of the steering module and the hull centerline along the vertical direction coincides with the positioning reference line. Ensuring that the angle between the thruster subassembly and the horizontal plane is the same as the preset angle during the installation of the stern subassembly ensures the upward tilt degree of the thruster subassembly and avoids sinking, which may affect the performance of the thruster. By continuously comparing with the positioning reference line, it is ensured that the preset angle is at the correct angular value to meet the requirements during launching.

[0046] In this embodiment, after the step of installing the stern subassembly above the thruster subassembly, the following steps are further included: installing the propulsion device from the lower surface of the outer bottom plate; connecting the propulsion device to the steering module; ensuring that the projection of the steering module and the hull centerline along the gravity direction coincides with the positioning reference line. It can be realized that the propulsion device is connected to the steering module, and when the steering module rotates, it can drive the propulsion device to achieve steering, thereby changing the running direction of the ship.

[0047] In this embodiment, after the step of installing the propulsion device from the lower surface of the outer bottom plate, the following steps are further included: positioning and installing the HEAD-BOX on the lower surface of the outer bottom plate; ensuring that the projection of the steering module and the hull centerline along the gravity direction coincides with the positioning reference line. It can be realized that when the HEAD-BOX is positioned and installed, the angle between the thruster subassembly and the horizontal plane is ensured to be the same as the preset angle, ensuring the upward tilt degree of the thruster subassembly and avoiding sinking, which may affect the performance of the thruster. By continuously comparing with the positioning reference line, it is ensured that the preset angle is at the correct angular value to meet the requirements during launching. (In this article, HEAD-BOX is a false rudder in ship terminology.)

[0048] In this embodiment, the length of the preset allowance line of the rudder hole is 100 mm. It can be realized that by setting an allowance line with a length of 100 mm, the error value during the opening of the outer bottom plate rudder hole and the inner bottom plate rudder hole can be judged, and the installation accuracy of the steering module is ensured by compensating for the error value.

[0049] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that this is only for illustration purposes. The protection scope of the present invention is defined by the appended claims. Without departing from the principles and essence of the present invention, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. An installation method for positioning a rudder turning module of a cruise ship, including a thruster segment, wherein the inner bottom plate of the thruster segment is provided with an inner bottom plate rudder hole, characterized in that, The installation method includes: Step S1: Determine the position of the center of the rudder hole on the inner bottom plate; Step S2: Based on the position of the center of the rudder hole on the inner bottom plate and the projections of the inner bottom plate rudder hole along the axis of the inner bottom plate rudder hole, make the contour line of the outer bottom plate and the position of the center of the outer bottom plate rudder hole on the upper surface of the outer bottom plate; Step S3: Place the steering module into the inner bottom plate rudder hole, so that the projection of the center position of the steering module along the axis of the inner bottom plate rudder hole is aligned and matched with the position of the center of the outer bottom plate rudder hole, and cut the outer bottom plate rudder hole along the contour of the steering module; Step S4: Install and connect the steering module and the thruster segment by segment, so that the bottom of the steering module can be exposed from the outer bottom plate rudder hole; The specific content of step S3 includes: Draw a margin hole according to the preset margin line of the inner bottom plate rudder hole of the thruster segment; Cut the margin hole; Put the steering module into the inner bottom plate rudder hole; Cut the outer bottom plate rudder hole according to the projection of the steering module on the upper surface of the outer bottom plate, so that the inner bottom plate rudder hole and the outer bottom plate rudder hole are penetrated; The specific content of step S4 includes: Make a sectional contour line and a ground center position below the thruster segment according to the position of the center of the inner bottom plate rudder hole and the projections of the inner bottom plate rudder hole along the axis of the inner bottom plate rudder hole; Align and match the projection of the center position of the steering module along the axis of the inner bottom plate rudder hole with the ground center position, and install and connect the steering module and the thruster segment by segment, so that the bottom of the steering module can be exposed from the outer bottom plate rudder hole.

2. The installation method for positioning the rudder turning module of a cruise ship according to claim 1, characterized in that, The number of the thruster segments is multiple, and the installation method for positioning the cruise ship steering module further includes: Assemble multiple thruster segments horizontally in sequence to form a total thruster segment; Assemble the total thruster segment and the stern of the ship.

3. The installation method for positioning the rudder turning module of a cruise ship according to claim 2, characterized in that In the step of assembling multiple thruster segments horizontally in sequence to form a total thruster segment: Make the total thruster segment with multiple thruster segments symmetric about the center line of the ship.

4. The installation method for positioning the rudder turning module of a cruise ship according to claim 2, characterized in that, The specific content of the step of assembling the total thruster segment and the stern of the ship includes: Warp the side of the total thruster segment away from the ship, so that a preset angle is formed between the extending direction of the total thruster segment and the horizontal direction; Draw a positioning reference line on the ground according to the contour of the steering module and the projection of the center line of the ship along the vertical direction; Ensure that the projection of the steering module and the center line of the ship along the vertical direction coincides with the positioning reference line during the welding of the total thruster segment.

5. The installation method for positioning the rudder turning module of a cruise ship according to claim 4, characterized in that After the step of assembling the total thruster segment and the stern of the ship, it further includes: Install the stern total segment above the total thruster segment, and ensure that the angle between the total thruster segment and the horizontal plane is the same as the preset angle during installation; Ensure that the projection of the steering module and the center line of the ship along the vertical direction coincides with the positioning reference line.

6. The installation method for positioning the rudder turning module of a cruise ship according to claim 5, characterized in that, After the step of installing the stern total segment above the total thruster segment, it further includes: Install the propulsion device from the lower surface of the outer bottom plate; Connect the propulsion device and the steering module; Ensure that the projection of the steering module along the gravity direction on the hull center line coincides with the positioning reference line.

7. The installation method for positioning the rudder turning module of a cruise ship according to claim 6, characterized in that After the step of installing the propulsion device on the lower surface of the outer bottom plate, the following steps are further included: Position and install the HEAD-BOX on the lower surface of the outer bottom plate; Ensure that the projection of the steering module along the gravity direction on the hull center line coincides with the positioning reference line.

8. The installation method for positioning the steering module of a cruise ship according to claim 1, characterized in that, The length of the preset margin line of the rudder hole is 100 mm.

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