CN119197439A

CN119197439A - Ship axis monitoring method and ship

Info

Publication number: CN119197439A
Application number: CN202411394998.8A
Authority: CN
Inventors: 聂家平; 王杰; 徐占勇; 那铁锁; 孟金州; 叶飞
Original assignee: Shanghai Waigaoqiao Shipbuilding Co Ltd
Current assignee: Shanghai Waigaoqiao Shipbuilding Co Ltd
Priority date: 2024-10-08
Filing date: 2024-10-08
Publication date: 2024-12-27

Abstract

The present application relates to the field of shipbuilding technology, and in particular to a ship axis monitoring method and a ship. The ship axis monitoring method comprises: selecting a number of measurement locations on the axis system along the X direction of the ship; determining the axis horizontal plane with the baseline of the ship and the axis of the stern tube; making two measurement marking points on the hull outer plate of each measurement location at the position intersecting with the axis horizontal plane; measuring and recording the initial coordinate values of the two measurement marking points; in the subsequent loading process, measuring and recording the deviation coordinate values of the two measurement marking points again; comparing the deviation coordinate values of the two measurement marking points with the initial coordinate values of the two measurement marking points, and judging whether the deviation of the axis meets the requirements. The ship axis monitoring method and the ship of the present application solve the problem that in the existing method of using a wire to pull and look at the light to monitor the axis, the installation of the axis system can only be placed after the entire engine room area is loaded, which will greatly extend the dock construction period.

Description

Ship axis monitoring method and ship

Technical Field

The application relates to the technical field of ship manufacturing, in particular to a ship axis monitoring method and a ship.

Background

The shafting is located in the cabin area, is one of key factors influencing ship sailing performance, is high in installation accuracy requirement, and generally comprises a tail shaft tube, a tail shaft, a middle shaft, a main engine and the like.

In the process of building the ship engine room, whether the carrying process meets the standard or not needs to be monitored, the existing monitoring means are to detect the axis of the ship tail shaft tube in advance, and then monitor the deviation value of the axis in real time in the carrying process of the ship engine room. Because the ship nacelle is affected by gravity, welding conditions, and the like during the mounting process, there is a possibility that the ship nacelle is deviated.

In the prior art, for a long time, the axis is monitored by adopting a method of pulling a wire to look at light, the axis is determined by taking the looking-through of the front end and the rear end of a tail shaft tube as a reference, and then the looking-at light instrument is used to look at the head end of the axis in the carrying process of a ship cabin, so that the deviation value of the axis is directly read.

However, this method requires that there be no impediment to the path of the axis during monitoring, and once the shafting is installed (e.g., after installation of the tail shaft, intermediate shaft, etc.), it is not possible to continue monitoring the axis. Therefore, in order to ensure that the axis is continuously monitored during the loading of the hull at the upper part of the cabin area, the installation of the shafting can only be carried out after the loading of the whole cabin area is completed, but the dock construction period is greatly prolonged.

Disclosure of Invention

The application aims to provide a ship axis monitoring method and a ship, so that the problem that in the existing ship axis monitoring process by adopting a stay wire light-observing method, the installation of a shafting can only be carried out in the whole cabin area, and the dock construction period can be greatly prolonged is solved.

According to a first aspect of the present application there is provided a method of vessel axis monitoring, the method comprising:

selecting a plurality of measuring positions on a shafting along the X direction of the ship;

determining an axis horizontal plane by the base line of the ship and the axis of the tail shaft pipe;

two measuring mark points are made on the ship body outer plate at the positions intersecting with the axis horizontal plane at the measuring positions;

measuring and recording initial coordinate values of two measurement mark points;

In the subsequent carrying process, measuring and recording the deviation coordinate values of the two measurement mark points again;

and comparing the deviation coordinate values of the two measurement mark points with the initial coordinate values of the two measurement mark points, and judging whether the deviation of the axes meets the requirement.

In any of the above technical solutions, further, the step of measuring and recording initial coordinate values of the two measurement mark points includes:

Sequentially measuring and recording initial coordinate values of two measurement mark points on the hull plate at each measurement position;

The initial coordinate values of the two measuring mark points A1 and A2 on the hull plate of one measuring position A are (X _A10,Y_A10,Z_A10) and (X _A20,Y_A20,Z_A20);

in the subsequent carrying process, the step of measuring and recording the deviation coordinate values of the two measurement mark points again comprises the following steps;

Measuring and recording the deviation coordinate values (X _A1,Y_A1,Z_A1) and (X _A1,Y_A1,Z_A1) of the two measurement mark points A1 and A2 on the hull external plate at the measuring position again;

The step of comparing the offset coordinate values of the two measurement mark points with the initial coordinate values of the two measurement mark points comprises the following steps:

The Y-direction deviation value of one measurement mark point A1 is DeltaY _A1＝Y_A1-Y_A10, and the Z-direction deviation value of the measurement mark point A1 is DeltaZ _A1＝Z_A1-Z_A10;

The Y-direction deviation value of the other measurement mark point A2 is DeltaY _A2＝Y_A2-Y_A20, and the Z-direction deviation value of the measurement mark point A2 is DeltaZ _A2＝Z_A2-Z_A20.

In any of the above technical solutions, further, the step of comparing the offset coordinate values of the two measurement mark points with the initial coordinate values of the two measurement mark points further includes:

the Y-direction axis deviation value of the measuring position A is delta Y _A＝(△Y_A1+△Y_A2/2, and the Z-direction axis deviation value of the measuring position A is delta Z _A＝(△Z_A1+△Z_A2/2.

In any of the above technical solutions, further, the step of making two measurement mark points at a position intersecting with the axis horizontal plane includes:

and (3) making two measuring mark points on the ship body outer plate at each measuring position at the position intersecting with the horizontal plane of the axis, and attaching a reflecting sheet at the positions of the two measuring mark points for total station measurement.

and erecting the total station at a proper position in the dock by taking the center line of the hull at the bottom of the dock as a reference, and measuring and recording initial coordinate values of the two measurement mark points.

In any of the above technical solutions, further, the step of selecting the measurement positions on the plurality of shafting along the X-direction of the ship includes:

And sequentially selecting a tail end measuring position, a head end measuring position, an intermediate shaft measuring position, a host tail end measuring position and a host head end measuring position of the tail shaft tube on the shaft system along the X direction of the ship.

In any of the above technical solutions, further, the shafting of the ship includes a propeller, a tail shaft pipe, a tail shaft, an intermediate shaft and a main machine;

The tail shaft sleeve is arranged on the tail shaft, the tail end of the tail shaft is connected with the propeller, the head end of the tail shaft is connected with the tail end of the intermediate shaft, and the head end of the intermediate shaft is connected with the tail end of the host.

In any of the above technical solutions, further, the ship axis monitoring method further includes the step, before the step of selecting the measurement positions on the plurality of shafting along the X-direction of the ship, of:

Sleeving the tail shaft on the tail shaft in a sleeved mode;

connecting the tail end of the tail shaft with the propeller;

Connecting the head end of the tail shaft with the tail end of the intermediate shaft;

and connecting the head end of the intermediate shaft with the tail end of the host.

According to a second aspect of the present application there is provided a vessel manufactured by a vessel axis monitoring method as described above.

In any of the above technical solutions, further, the shafting of the ship comprises a propeller, a tail shaft tube, a tail shaft, an intermediate shaft and a host, wherein the tail shaft is sleeved on the tail shaft, the tail end of the tail shaft is connected with the propeller, the head end of the tail shaft is connected with the tail end of the intermediate shaft, and the head end of the intermediate shaft is connected with the tail end of the host.

The ship axis monitoring method comprises the following steps:

The method comprises the steps of selecting a plurality of measuring positions on a shaft system along the X direction of a ship, determining an axis horizontal plane by the axis of a base line and a tail shaft pipe of the ship, making two measuring mark points on a ship body outer plate at the positions intersecting the axis horizontal plane at each measuring position, measuring and recording initial coordinate values of the two measuring mark points, measuring and recording deviation coordinate values of the two measuring mark points again in the subsequent carrying process, comparing the deviation coordinate values of the two measuring mark points with the initial coordinate values of the two measuring mark points, and judging whether the deviation of the axis meets the requirement.

According to the technical characteristics, the application has the beneficial effects that:

The ship axis monitoring method is a method for monitoring the ship axis by measuring the coordinates of the point positions of the ship outer plate, namely, in the ship construction process, a plurality of point positions on the ship outer plate of the shafting area are selected, and the change of the ship axis is monitored by measuring the coordinates of the point positions, so that whether the deviation of the axis meets the ship construction standard requirement is judged.

The ship axis monitoring method can be used for axis monitoring after boring the tail shaft tube, and particularly, under the condition that the tail shaft tube is internally provided with the tail shaft, the deviation condition of the axis is obtained by changing direct measurement into indirect measurement. Therefore, the operation of propulsion systems such as tail shaft installation, intermediate shaft installation, main engine installation and propeller installation is facilitated to be carried out in advance, and the dock construction period is shortened.

In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a schematic view of the position of the vessel according to the application at each measurement in the length direction;

FIG. 2 shows a schematic view of the positions of two measurement mark points at the tail end measurement of the tail end of the tail tube of the present application;

FIG. 3 is a schematic view showing the location of two measurement mark points at the head end measurement of the driveshaft tube of this application;

FIG. 4 is a schematic diagram showing the positions of two measurement mark points at the tail end measurement of the host computer of the present application;

Fig. 5 shows a schematic diagram of total station measurement of the present application.

The icons are 100-propeller, 200-tail shaft tube, 300-tail shaft, 400-intermediate shaft, 500-main machine, 600-total station, L-base line and S-axis horizontal plane.

Detailed Description

The following detailed description is provided to assist the reader in obtaining a thorough understanding of the methods, apparatus, and/or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatuses, and/or systems described herein will be apparent after an understanding of the present disclosure. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but rather, obvious variations may be made upon an understanding of the present disclosure, other than operations that must occur in a specific order. In addition, descriptions of features known in the art may be omitted for the sake of clarity and conciseness.

The features described herein may be embodied in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein have been provided solely 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 present disclosure.

In the entire specification, when an element (such as a layer, region or substrate) is described as being "on", "connected to", "bonded to", "over" or "covering" another element, it may be directly "on", "connected to", "bonded to", "over" or "covering" another element or there may be one or more other elements interposed therebetween. In contrast, when an element is referred to as being "directly on," directly connected to, "or" directly coupled to, "another element, directly on," or "directly covering" the other element, there may be no other element intervening therebetween.

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

Although terms such as "first," "second," and "third" may be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first member, component, region, layer or section discussed in examples described herein could also be termed a second member, component, region, layer or section without departing from the teachings of the examples.

For ease of description, spatial relationship terms such as "above," "upper," "below," and "lower" may be used herein to describe one element's relationship to another element as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "upper" relative to another element would then be oriented "below" or "lower" relative to the other element. Thus, the term "above" includes both "above" and "below" depending on the spatial orientation of the device. The device may also be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. Singular forms also are intended to include plural forms unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" are intended to specify the presence of stated features, integers, operations, elements, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, operations, elements, and/or groups thereof.

Variations from the shapes of the illustrations as a result, of manufacturing techniques and/or tolerances, are to be expected. Accordingly, the examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shapes that occur during manufacture.

The features of the examples described herein may be combined in various ways that will be apparent upon an understanding of the present disclosure. Further, while the examples described herein have a variety of configurations, other configurations are possible as will be apparent after an understanding of the present disclosure.

Before the application is put forward, the monitoring of the axis is carried out for a long time by adopting a method of pulling the line to look at the light, the front end and the rear end of the tail shaft tube are firstly used as the reference to determine the axis, then the light-looking instrument is used to look at the head end of the axis in the carrying process of the ship cabin, and the deviation value of the axis is directly read. However, this method requires that there be no impediment to the path of the axis during monitoring, and once the shafting is installed (e.g., after installation of the tail shaft, intermediate shaft, etc.), it is not possible to continue monitoring the axis. Therefore, in order to ensure that the axis is continuously monitored during the loading of the hull at the upper part of the cabin area, the installation of the shafting can only be carried out after the loading of the whole cabin area is completed, but the dock construction period is greatly prolonged.

In view of this, the first aspect of the present application provides a method for monitoring a ship axis, so as to solve the problem that in the existing method for monitoring a ship axis by using a stay wire and looking at light, the installation of the axis can only be carried out after the whole cabin area is carried, and thus the dock construction period is greatly prolonged. The ship axis monitoring method of the present application is described below with reference to fig. 1 to 5.

The ship axis monitoring method comprises the following steps of.

S1, selecting a plurality of measuring positions on the shaft system along the X direction of the ship.

S2, determining an axis horizontal plane S by the base line L of the ship and the axis of the tail shaft pipe 200.

S3, two measuring mark points are made on the ship body outer plate at each measuring position at the position intersecting with the axis horizontal plane S.

S4, measuring and recording initial coordinate values of the two measurement mark points.

S5, in the subsequent carrying process, measuring and recording the deviation coordinate values of the two measurement mark points again.

S6, comparing the deviation coordinate values of the two measurement mark points with the initial coordinate values of the two measurement mark points, and judging whether the deviation of the axes meets the requirement.

As described above, the ship axis monitoring method of the application is a method for monitoring the ship axis by measuring the coordinates of the point positions of the outer plate of the ship body, namely, in the ship construction process, a plurality of point positions on the outer plate of the ship body in a shafting area are selected, and the change of the ship axis is monitored by measuring the coordinates of the point positions, so that whether the deviation of the axis meets the ship construction standard requirement is judged.

The ship axis monitoring method of the application can be used for axis monitoring after boring the tail shaft tube 200, and particularly, in the case that the tail shaft 300 is installed in the tail shaft tube 200, the deviation condition of the axis is obtained by changing direct measurement into indirect measurement. Thus, the operation of the propulsion system such as the installation of the tail shaft 300, the installation of the intermediate shaft 400, the installation of the main engine 500, the installation of the propeller 100 and the like can be performed in advance, and the dock construction period can be shortened.

Specifically, the ship axis monitoring method of the application comprises the following steps:

As shown in fig. 1, in step S1, the tail shaft tube 200 in the shafting region is sleeved on the tail shaft 300, the tail end of the tail shaft 300 is connected with the propeller 100, the head end of the tail shaft 300 is connected with the tail end of the intermediate shaft 400, and the head end of the intermediate shaft 400 is connected with the tail end of the main engine 500. After a series of shafting structures are carried, a tail end measuring position A, a head end measuring position B, an intermediate shaft measuring position C, a host tail end measuring position D and a host head end measuring position E of the shafting are sequentially selected along the X direction of the ship.

In step S2, an axis line level S is determined with the baseline L of the ship and the axis line of the stern tube 200.

As shown in fig. 2,3 and 4, the axis level S is perpendicular to the Z direction of the vessel, and the axis level S is set at a standard height from the baseline L.

And S3, making two measuring mark points on the ship body outer plate at each measuring position at the position intersecting with the axis horizontal plane S.

In step S3, as shown in fig. 2, two measurement mark points A1 and A2 are made on the hull external plate at the tail end measurement position a of the tail end of the tail pipe at the position intersecting with the axis horizontal plane S. As shown in fig. 3, two measurement mark points B1 and B2 are made on the hull plate at the measurement position B of the head end of the stern tube at the position intersecting the axis horizontal plane S. Two measuring mark points C1 and C2 are made on the hull plate of the intermediate shaft measuring position C at the position intersecting with the axis horizontal plane S. As shown in fig. 4, two measurement mark points D1 and D2 are made on the hull outer plate at the tail end measurement position D of the main machine at the position intersecting the axis horizontal plane S. Two measuring mark points E1 and E2 are made on the ship body outer plate at the measuring position E of the head end of the host machine at the position intersecting with the axis horizontal plane S.

In step S3, reflection sheets are attached to positions of all measurement mark points for measurement by the total station 600.

And S4, measuring and recording initial coordinate values of two measurement mark points at each measurement position.

As shown in fig. 5, a total station 600 is erected at a proper position in the dock with the center line of the hull at the dock bottom as a reference, and initial coordinate values of two measurement mark points on the outer plate of the hull at each measurement position are sequentially measured and recorded.

For example, taking the tail end measuring position a of the tail pipe as an example, the initial coordinate values of the two measurement mark points A1 and A2 of the tail end measuring position a of the tail pipe measured by the total station 600 are (X _A10,Y_A10,Z_A10) and (X _A20,Y_A20,Z_A20).

And S5, in the subsequent carrying process, measuring and recording the deviation coordinate values of the two measurement mark points at each measurement position again. For example, taking the tail end measuring position a of the tail pipe as an example, the total station 600 measures the offset coordinate values (X _A1,Y_A1,Z_A1) and (X _A1,Y_A1,Z_A1) of the two measurement mark points A1 and A2 of the tail end measuring position a of the tail pipe.

In step S5, according to the requirement of axis monitoring, step S4 is repeated, and initial coordinate values and deviation coordinate values of two measurement mark points at all measurement positions are measured and recorded.

And S6, comparing the deviation coordinate values of the two measurement mark points with the initial coordinate values of the two measurement mark points, and judging whether the deviation of the axes meets the requirement.

In step S6, the deviation of the axis includes the Y direction (the width direction of the ship) and the Z direction (the height direction of the ship). And comparing the Y value and the Z value of the measurement mark point in the cabin carrying process with the initial value of the measurement mark point to obtain the deviation value of the central axis in the cabin carrying process. Hereinafter, the tail end measuring point a of the tail pipe will be exemplified.

The method comprises the steps of firstly calculating the deviation value of each of the points A1 and A2 at two measurement mark points A1 and A2 of the left and right outer plates of the tail end measuring position A of the tail end of the tail shaft tube, and then obtaining an average value to obtain the axis deviation value of the position A. The Y-direction deviation value of one measurement mark point A1 at the tail end measurement position A of the tail shaft tube is delta Y _A1＝Y_A1-Y_A10, and the Z-direction deviation value of the measurement mark point A1 is delta Z _A1＝Z_A1-Z_A10. The Y-direction deviation value of the other measurement mark point A2 is DeltaY _A2＝Y_A2-Y_A20, and the Z-direction deviation value of the measurement mark point A2 is DeltaZ _A2＝Z_A2-Z_A20. Then the Y-direction axis deviation value of the tail end measuring position A of the tail shaft tube is delta Y _A＝(△Y_A1+△Y_A2/2, and the Z-direction axis deviation value of the tail end measuring position A of the tail shaft tube is delta Z _A＝(△Z_A1+△Z_A2/2.

And finally, comparing the deviation value with a ship building standard, and judging whether the deviation of the axis meets the requirement.

The deviation values of the axes at the remaining measurements are calculated as such.

The initial coordinate values of the two measurement mark points B1 and B2 at the measurement position B of the front end of the tail pipe are (X _B10,Y_B10,Z_B10) and (X _B20,Y_B20,Z_B20). In the subsequent mounting process, the offset coordinate values (X _B1,Y_B1,Z_B1) and (X _B1,Y_B1,Z_B1) of the two measurement mark points B1 and B2 at the measurement position B of the head end of the tail shaft tube. The Y-direction deviation value of one of the measuring mark points B1 of the measuring position B of the front end of the tail shaft tube is delta Y _B1＝Y_B1-Y_B10, and the Z-direction deviation value of the measuring mark point B1 is delta Z _B1＝Z_B1-Z_B10. The Y-direction deviation value of the other measurement mark point B2 is DeltaY _B2＝Y_B2-Y_B20, and the Z-direction deviation value of the measurement mark point B2 is DeltaZ _B2＝Z_B2-Z_B20. Then the Y-direction axis deviation value of the position B at the head end of the tail shaft tube is delta Y _B＝(△Y_B1+△Y_B2/2, and the Z-direction axis deviation value of the position B at the head end of the tail shaft tube is delta Z _B＝(△Z_B1+△Z_B2/2.

The initial coordinate values of the two measurement mark points C1 and C2 at the intermediate axis measurement point C are (X _C10,Y_C10,Z_C10) and (X _C20,Y_C20,Z_C20). In the subsequent mounting process, the offset coordinate values (X _C1,Y_C1,Z_C1) and (X _C1,Y_C1,Z_C1) of the two measurement mark points C1 and C2 at the intermediate shaft measurement point C. The deviation value of the Y direction of one measurement marking point C1 of the middle shaft measurement position C is delta Y _C1＝Y_C1-Y_C10, and the deviation value of the Z direction of the measurement marking point B1 is delta Z _C1＝Z_C1-Z_C10. The Y-direction deviation value of the other measurement mark point C2 is DeltaY _C2＝Y_C2-Y_C20, and the Z-direction deviation value of the measurement mark point B2 is DeltaZ _C2＝Z_C2-Z_C20. Then the Y-axis deviation value of the intermediate shaft measurement position C is DeltaY _C＝(△Y_C1+△Y_C2/2, and the Z-axis deviation value of the intermediate shaft measurement position C is DeltaZ _C＝(△Z_C1+△Z_C2/2.

The initial coordinate values of the two measurement mark points D1 and D2 at the host tail end measurement point D are (X _D10,Y_D10,Z_D10) and (X _D20,Y_D20,Z_D20). In the subsequent mounting process, the deviation coordinate values (X _D1,Y_D1,Z_D1) and (X _D1,Y_D1,Z_D1) of the two measurement mark points D1 and D2 at the host tail end measurement position D are set. The deviation value of the Y direction of one of the measurement marking points D1 of the measurement position D at the tail end of the host is delta Y _D1＝Y_D1-Y_D10, and the deviation value of the Z direction of the measurement marking point D1 is delta Z _D1＝Z_D1-Z_D10. The Y-direction deviation value of the other measurement mark point C2 is DeltaY _D2＝Y_D2-Y_D20, and the Z-direction deviation value of the measurement mark point D2 is DeltaZ _D2＝Z_D2-Z_D20. Then the Y-axis deviation value of D at the tail end of the host is DeltaY _D＝(△Y_D1+△Y_D2/2, and the Z-axis deviation value of D at the tail end of the host is DeltaZ _D＝(△Z_D1+△Z_D2/2.

The initial coordinate values of the two measurement mark points E1 and E2 at the host head end measurement point E are (X _E10,Y_E10,Z_E10) and (X _E20,Y_E20,Z_E20). In the subsequent mounting process, the deviation coordinate values (X _E1,Y_E1,Z_E1) and (X _E1,Y_E1,Z_E1) of the two measurement mark points E1 and E2 at the host head end measurement position E are set. The deviation value of the Y direction of one of the measurement mark points E1 of the measurement position E of the head end of the host is delta Y _E1＝Y_E1-Y_E10, and the deviation value of the Z direction of the measurement mark point D1 is delta Z _E1＝Z_E1-Z_E10. The Y-direction deviation value of the other measurement mark point C2 is DeltaY _E2＝Y_E2-Y_E20, and the Z-direction deviation value of the measurement mark point E2 is DeltaZ _E2＝Z_E2-Z_E20. Then the Y-direction axis deviation value of the E at the head end of the host is delta Y _E＝(△Y_E1+△Y_E2/2, and the Z-direction axis deviation value of the E at the head end of the host is delta Z _E＝(△Z_E1+△Z_E2/2.

In summary, the ship axis monitoring method of the present application is a method for monitoring the ship axis by measuring the coordinates of the point positions of the outer plate of the ship body, that is, in the process of ship construction, a plurality of point positions on the outer plate of the ship body in the shafting area are selected, and the change of the ship axis is monitored by measuring the coordinates of the point positions, so as to determine whether the deviation of the axis meets the requirement of the ship construction standard.

The shafting of the ship comprises a propeller 100, a tail shaft tube 200, a tail shaft 300, a middle shaft 400 and a host 500, wherein the tail shaft tube 200 is sleeved on the tail shaft, the tail end of the tail shaft 300 is connected with the propeller 100, the head end of the tail shaft 300 is connected with the tail end of the middle shaft 400, and the head end of the middle shaft 400 is connected with the tail end of the host 500.

It should be noted that the foregoing embodiments are merely illustrative embodiments of the present application, and not restrictive, and the scope of the application is not limited to the embodiments, and although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that any modification, variation or substitution of some of the technical features of the embodiments described in the foregoing embodiments may be easily contemplated within the scope of the present application, and the spirit and scope of the technical solutions of the embodiments do not depart from the spirit and scope of the embodiments of the present application.

Claims

1. A method of vessel axis monitoring, the method comprising:

2. The method for monitoring the axis of a ship according to claim 1, wherein,

The step of measuring and recording the initial coordinate values of the two measurement mark points comprises the following steps:

3. The method for monitoring the axis of a ship according to claim 2, wherein,

The step of comparing the offset coordinate values of the two measurement mark points with the initial coordinate values of the two measurement mark points further comprises:

4. The method for monitoring the axis of a ship according to claim 1, wherein,

The step of making two measurement mark points on the hull external plate at the positions intersecting with the axis horizontal plane at each measurement position comprises the following steps:

5. The method for monitoring the axis of a ship according to claim 4, wherein,

and erecting the total station in the dock by taking the center line of the hull at the bottom of the dock as a reference, and measuring and recording initial coordinate values of the two measurement mark points.

6. The method for monitoring the axis of a ship according to claim 1, wherein,

The step of selecting a plurality of measurement positions on the shafting along the X direction of the ship comprises the following steps:

7. The method of claim 1, wherein the shafting of the vessel comprises a propeller, a stern tube, a stern shaft, a countershaft and a main machine;

8. The method of vessel axis monitoring according to claim 7, further comprising the step of, prior to the step of selecting a number of shafting measurements in the X-direction of the vessel:

Sleeving the tail shaft on the tail shaft in a sleeved mode;

connecting the tail end of the tail shaft with the propeller;

9. A vessel, characterized in that the vessel is manufactured by a vessel axis monitoring method according to any of claims 1-8.

10. The vessel according to claim 9, wherein the shafting of the vessel comprises a propeller, a stern tube, a stern shaft, a countershaft and a main machine;