Method for measuring floating state level of deck

Abstract

The invention belongs to the technical field of shipbuilding, and provides a deck floating state level measurement method, which comprises the following steps: carrying out level measurement on a deck before entering water to obtain level data before floating state; obtaining a target measuring device and setting an instrument erection position; a plurality of horizontal datum points on the deck are obtained and marked; installing the target measuring device to an instrument erection position; according to the horizontal datum point, performing floating state horizontal measurement on the deck to obtain horizontal data after floating state; and comparing the level data after the floating state with the level data before the floating state to form a floating state level measurement report. According to the method, the relative position between the target measurement device and the deck is kept unchanged in the measurement process, and error increase caused by sloshing is prevented; the target measuring device has a large measuring range on the deck, the number of times of station moving measurement can be reduced, and the measuring efficiency is improved; and horizontal measurement is carried out according to the specific horizontal reference point, so that the measurement error is reduced, and the rework rate caused by the measurement error is reduced.

Description

Technical Field

[0001] The present application relates to the field of shipbuilding technology, and in particular to a method for measuring the floating level of a deck. Background Art

[0002] With the development of the economy and technology, competition among major shipbuilding companies is becoming increasingly fierce. High quality, high efficiency, and low cost are crucial factors in ensuring a company's competitive advantage during the shipbuilding process. As the demand for shipbuilding speeds continues to increase, existing construction sites and docks are becoming key factors limiting efficient construction. To increase shipbuilding speed and shorten docking periods, more and more shipbuilding companies are choosing to move some processes to floating docks or on the water.

[0003] During the floating construction process, thin plates have weak rigidity and are prone to defects and deformation. For example, some ship decks use a large number of 6mm thin plates. In order to control the deck deformation within the allowable range during the process of moving from the slipway to the floating dock, in addition to fixed steel support columns, temporary channel steel supports are required between each deck. The horizontal status of each deck needs to be monitored in real time throughout the entire operation process.

[0004] Currently, total stations are commonly used to measure deck level on slipways and docks. These instruments have a built-in leveling function and offer a measurement accuracy of approximately 1mm. However, in practice, deck level measurements often suffer from significant instability due to the ship's floating state, leading to deck level measurement errors exceeding 10mm. This often requires repeated measurements and adjustments, impacting the speed and quality of shipbuilding and hindering rapid shipbuilding. Summary of the Invention

[0005] In response to the above-mentioned problems in the prior art, the purpose of this application is to provide a deck floating level measurement method, which is used to solve the problems such as large accuracy errors when measuring the floating level of the deck in the prior art, and can effectively improve the horizontal measurement accuracy of the deck.

[0006] To achieve the above-mentioned and other related purposes, the present application provides a method for measuring the floating level of a deck, comprising the following steps:

[0007] Before launching, the deck should be leveled to obtain the level data before floating;

[0008] Acquire a target measurement device and set an instrument installation position of the target measurement device;

[0009] Obtain and mark several horizontal reference points on the deck;

[0010] Installing the target measurement device to the instrument installation location;

[0011] According to the horizontal reference point, the target measuring device is used to measure the floating state of the deck to obtain floating state horizontal data;

[0012] The floating state horizontal data is compared with the pre-floating state horizontal data to form a floating state horizontal measurement report.

[0013] Optionally, in the step of obtaining the target measuring device, the target measuring device comprises:

[0014] a base plate having a first surface and a second surface arranged oppositely;

[0015] a suction assembly connected to the second surface of the base plate, used to fix the target measuring device on the deck;

[0016] a support column connected vertically to the first surface of the base plate;

[0017] a horizontal measuring instrument installed at the end of the support column away from the base plate, used to measure the deck.

[0018] Optionally, in the step of obtaining the target measuring device, the target measuring device further comprises a plurality of diagonal braces, the plurality of diagonal braces are arranged around the outer side of the support column and connected to the support column and the base plate respectively.

[0019] Optionally, in the step of obtaining the target measuring device, the suction assembly comprises a magnet structure fixedly connected to the second surface of the base plate, the magnet structure can adsorb the deck to fix the target measuring device on the deck, and is used to identify the measurement direction of the horizontal measuring instrument.

[0020] Optionally, in the step of obtaining the target measuring device, the support column is connected vertically to the center area of the first surface of the base plate, and the end of the support column away from the base plate is provided with a mounting hole, and the horizontal measuring instrument is fixedly installed on the support column through the mounting hole.

[0021] Optionally, in the step of setting the instrument erection position of the target measuring device, the surface of the deck is provided with a ship center reference line and a plurality of rib position reference lines, and a plurality of intersection points between the plurality of rib position reference lines and the ship center reference line are used as the mounting center point of the instrument erection position.

[0022] Optionally, the surface of the deck is further provided with a distance from the center 7500 reference line; a plurality of horizontal reference points on the deck are obtained and marked, comprising the following steps:

[0023] the column position on the deck is measured;

[0024] obtaining a measurement height of the target measuring device and a horizontal variation amount of the deck at the column position;

[0025] determining a projection position of the horizontal reference point on a deck horizontal reference surface according to the column position on the deck;

[0026] obtaining a distance between the horizontal reference point and the deck horizontal reference surface according to the measurement height and the horizontal variation amount at the column position, to mark the horizontal reference point;

[0027] wherein the projection point of the horizontal reference point on the deck surface is located on the center 7500 reference line.

[0028] Optionally, the instrument erection position includes a first erection position and a second erection position, the first erection position being an initial installation position of the target measuring device, and the second erection position being a plurality of instrument erection positions adjacent to the first erection position; the floating state horizontal measurement of the deck by the target measuring device includes the following steps:

[0029] obtaining a horizontal variation amount of the second erection position;

[0030] obtaining a center reference point at the second erection position according to the horizontal variation amount of the second erection position and the measurement height of the target measuring device;

[0031] establishing a horizontal measurement reference surface according to the center reference point at the second erection position and the horizontal reference point adjacent to the first erection position;

[0032] performing floating state horizontal measurement on the deck based on the horizontal measurement reference surface to obtain floating state horizontal data;

[0033] When the target measuring device is blocked by an obstacle on the deck, the target measuring device is moved to the second erection position to perform floating state horizontal measurement on the deck.

[0034] Optionally, the instrument erection position further includes a third erection position, the third erection position being an instrument erection position of the target measuring device after being moved; the floating state horizontal measurement on the deck by the target measuring device includes the following steps:

[0035] obtaining a horizontal variation amount at the third erection position;

[0036] adjusting the position of the horizontal reference point adjacent to the third erection position according to the horizontal variation amount at the third erection position, and regenerating a horizontal measurement reference surface;

[0037] The target measurement device is moved to the third erecting position to measure the floating state level of the deck.

[0038] Optionally, the step of comparing the floating state post-level data with the floating state pre-level data comprises:

[0039] The floating state post-level data is compared with the floating state pre-level data to determine whether there is a deformation area on the deck.

[0040] When the deformation area exists on the deck, the deformation area is detected again to form a floating state level report.

[0041] As described above, compared with the prior art, the deck floating state level measurement method provided by the present application has at least the following beneficial effects:

[0042] In the method, the floating state level of the deck is measured by the target measurement device, the relative position between the target measurement device and the deck is kept unchanged during the floating state measurement by the adsorption assembly, which effectively prevents the measurement error from increasing due to the shaking of the target measurement device, the measurement range of the target measurement device is increased by the support column, the measurement frequency is reduced, and the measurement efficiency is effectively improved; during the measurement, the horizontal measurement reference surface is generated by setting the horizontal reference point and the center reference point at the specific position, which improves the accuracy of the measurement data and reduces the rework rate caused by the measurement error; and the measurement does not need to be taken on the high place, which increases the safety during the construction process, reduces the risk of safety accidents, and provides technical support for the floating state positioning of the stern door, the side door, the ramp and the horizontal measurement of the local space. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0044] Figure 1 A flowchart of a deck floating state level measurement method provided by an embodiment of the present application is shown.

[0045] Figure 2 A structural diagram of a target measurement device provided by an embodiment of the present application is shown.

[0046] Figure 3 A structural diagram of a target measurement device provided by an embodiment of the present application is shown. Figure 2 A front view of a base plate of the target measurement device shown.

[0047] Figure 4The figure shows the position of the centerline of the hull and the position of the rib reference line on the deck provided by the embodiment of the present application.

[0048] Figure 5 The figure shows the theoretical diagram of forming the horizontal measurement reference plane provided by the embodiment of the present application.

[0049] Figure 6 The figure shows the theoretical diagram of forming the horizontal measurement reference plane in the process of moving measurement of the floating state of the deck provided by the embodiment of the present application.

[0050] Figure 7 The figure shows the drawing diagram of the front horizontal data of the floating state of the deck provided by the embodiment of the present application.

[0051] Figure 8 The figure shows the drawing diagram of the rear horizontal data of the floating state of the deck provided by the embodiment of the present application.

[0052] The figure shows the drawing diagram of the rear horizontal data of the floating state of the deck provided by the embodiment of the present application.

[0053] 10, target measurement device; 11, base plate; 12, suction assembly; 13, support column; 131, mounting hole; 14, horizontal measurement instrument; 15, inclined support. DETAILED DESCRIPTION

[0054] In order to make the technical purposes, technical solutions and technical effects of the present application clearer, the technical solutions in the present application will be described clearly and completely in combination with embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0055] Therefore, the detailed description of the embodiments of the present application below is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those skilled in the art without creative labor based on the embodiments in the present application belong to the scope of protection of the present application. In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0056] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0057] In the description of the present application, unless specifically defined and limited otherwise, the terms "mounting", "connected", "connection" should be interpreted broadly, for example, can be fixed connection, but also can be detachable connection. In addition, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In the present description, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples as appropriate.

[0058] In view of the problem of large measurement error in the prior art when measuring the floating state level of the deck, the present embodiment provides a deck floating state level measurement method for measuring the horizontal floating state of the deck to improve the accuracy of the measurement data and reduce the measurement error. With reference to Figure 1 The deck floating state level measurement method of the present embodiment includes steps S1 to S6, which are described as follows.

[0059] Step S1, measuring the level of the deck before launching to obtain the pre-floating level data.

[0060] Before the ship is launched, the level of each hard file deck is measured to generate the pre-floating level data. Optionally, performing step S1 can include the following steps: measuring the column position on the deck; obtaining the surface reference point according to the column position and establishing a deck level reference surface; measuring the level of the deck according to the deck level reference surface to obtain the pre-floating level data. In the present embodiment, the deck can also be measured by the target measurement device 10 according to the measurement process of steps S2 to S5, or other suitable methods can be used to measure the deck to obtain the pre-floating level data.

[0061] Step S2, obtaining the target measurement device 10 and setting the instrument erection position of the target measurement device 10.

[0062] In the present embodiment, with reference to Figure 2 and Figure 3 The target measurement device 10 includes a base plate 11, a suction assembly 12, a support column 13 and a level meter 14. The base plate 11 has a first surface and a second surface arranged opposite to each other; the suction assembly 12 is connected to the second surface of the base plate 11 for fixing the target measurement device 10 on the deck; the support column 13 is vertically connected to the first surface of the base plate 11; the level meter 14 is installed at the end of the support column 13 away from the base plate 11 for measuring the level of the deck.

[0063] The target measuring device 10 and the ship deck can be fixed by the adsorption assembly 12, so that the relative position between the target measuring device 10 and the ship deck is kept unchanged, and the measurement error caused by the target measuring device 10 is prevented from being increased due to the swing of the target measuring device 10 during the floating state level measurement; the base plate 11 can improve the stability of the target measuring device 10, reduce the risk of the target measuring device 10 swinging, and provide support for the support column 13; the support column 13 can increase the measurement range of the target measuring device 10, reduce the number of station moving of the target measuring device 10 during the floating state level measurement, improve the measurement efficiency, and provide support for the level measuring instrument 14.

[0064] In an optional embodiment, the base plate 11 is a disc structure, the diameter of the disc structure of the base plate 11 can be 200 mm or other suitable size, and the thickness of the disc structure of the base plate 11 can be 20 mm or other suitable size. The support column 13 is a cylindrical rod structure, the diameter of the support column 13 can be 40 mm or other suitable size, and the height of the support column 13 along the axial direction can be 800 mm or other suitable value.

[0065] In an optional embodiment, referring to Figure 2 , in the step of obtaining the target measuring device 10, the target measuring device 10 further includes a plurality of diagonal braces 15, the plurality of diagonal braces 15 are arranged around the outer side of the support column 13 and are respectively connected to the support column 13 and the base plate 11, and are used to improve the structural stability between the support column 13 and the base plate 11. The number of diagonal braces 15 can be, for example, 1, 2, 3 or other suitable number, and the structure of the diagonal brace 15 can be, for example, a triangular plate structure, a rod structure or other suitable structure; further, the target measuring device 10 includes four diagonal braces 15 of triangular plate structure, which are uniformly arranged around the outer side of the support column 13 and are respectively fixedly connected to the support column 13 and the base plate 11; specifically, the diagonal brace 15 is, for example, a right-angled triangular plate, and two right-angled edges of the diagonal brace 15 are respectively connected to the support column 13 and the base plate 11.

[0066] In an optional embodiment, the adsorption assembly 12 includes a magnet structure, the magnet structure is used to adsorb the deck, and can identify the measurement direction of the level measuring instrument 14. The shape of the magnet structure can be a polygonal structure, a radial structure or other suitable structure; the magnet structure can be provided with a direction mark to identify the measurement direction of the level measuring instrument 14, or the shape of the magnet structure can be used to identify the measurement direction of the level measuring instrument 14.

[0067] Further, the adsorption assembly 12 is fixedly connected to the second surface of the base plate 11.

[0068] Further, the magnet structure comprises a cross-shaped magnet, the cross-shaped magnet is in a cross-shaped structure, the cross-shaped magnet can adsorb the deck to fix the target measuring device 10 on the deck, and the cross-shaped magnet can also mark the measuring direction of the horizontal measuring instrument 14 by the shape of the cross-shaped structure.

[0069] In an optional embodiment, the support column 13 is vertically connected to the central area of the first surface of the base plate 11, the extension direction of the support column 13 is perpendicular to the first surface of the base plate 11, and the end of the support column 13 away from the base plate 11 is provided with a mounting hole 131, and the horizontal measuring instrument 14 is fixedly installed on the support column 13 through the mounting hole 131. Further, the mounting hole 131 is a threaded hole, the mounting hole 131 extends from the side of the support column 13 away from the base plate 11 to the direction close to the base plate 11, and the horizontal measuring instrument 14 can be fixed on the support column 13 by the fixing bolt matched with the threaded hole.

[0070] In an optional embodiment, the horizontal measuring instrument 14 is a level meter, which comprises a telescope, a compensator, a vertical shaft, a base, a foot screw, and the like, and is provided with a level ruler. Further, along the extension direction of the support column 13, the distance between the exit center of the laser emitted by the horizontal measuring instrument 14 and the support column 13 is, for example, 200 mm or other suitable values.

[0071] In this embodiment, referring to Figure 4 , the surface of the deck has a ship center reference line and a plurality of rib position reference lines, the ship center reference line is along the bow-stern direction of the ship, the rib position reference line is along the width direction of the ship, and the rib position reference line optionally comprises an FR123 reference line, an FR107 reference line, and the like. The ship center reference line of the deck is further provided with a distance from the center 7500 reference line on both sides. In the step of setting the instrument erection position of the target measuring device 10, a plurality of intersection points between the plurality of rib position reference lines and the ship center reference line can be used as the installation center point of the instrument erection position.

[0072] Step S3, obtaining and marking a plurality of horizontal reference points on the deck.

[0073] In this embodiment, referring to Figure 4 , a plurality of columns are arranged on the deck, and the horizontal reference points can be obtained as the reference points of the floating state level measurement according to the positions of the columns on the deck. Optionally, obtaining and marking a plurality of horizontal reference points on the deck can comprise the following steps: measuring the positions of the columns on the deck; obtaining the measurement height of the target measuring device 10 and the horizontal variation amount of the deck at the column positions; determining the projection positions of the horizontal reference points on the deck horizontal reference surface according to the column positions; and obtaining the distance between the horizontal reference points and the deck horizontal reference surface according to the measurement height and the horizontal variation amount at the column positions, to mark the horizontal reference points.

[0074] In step S3, the horizontal variation amount of the deck at the column position can be obtained according to the pre-float horizontal data, the projection position of the horizontal reference point on the deck surface is determined according to the measured column position, and then the projection position of the horizontal reference point on the deck horizontal reference surface is determined. The projection point of the horizontal reference point on the deck horizontal reference surface is moved upward according to the measurement height of the target measuring device 10 to obtain the horizontal reference point.

[0075] The deck horizontal reference surface is a reference surface used to describe the deformation of the deck during the deck horizontal measurement process. The deck horizontal reference surface can be obtained according to the surface reference point in step S1, or other suitable methods can be used to obtain the above-mentioned deck horizontal reference surface. The distance between the horizontal reference point and the deck horizontal reference surface can be obtained by calculating the measurement height minus the horizontal variation amount. After the target measuring device 10 is installed at the instrument erection position, the distance between the exit center of the horizontal measuring instrument 14 and the deck surface is the measurement height of the target measuring device 10. The horizontal reference point and the exit center of the horizontal measuring instrument 14 are located in the same plane to ensure the accuracy of the measurement results.

[0076] In an optional embodiment, with reference to Figure 4 The surface of the deck is also provided with two distance center 7500 reference lines located on the opposite sides of the hull center reference line along the extension direction of the rib position reference line. The distance center 7500 reference line can be understood as a reference line with a distance of 7500 mm from the hull center reference line. The projection point of the horizontal reference point on the deck surface is located on the distance center 7500 reference line. Further, the projection point of the horizontal reference point on the deck surface is the intersection of the distance center 7500 reference line and the rib position reference line.

[0077] Step S4, install the target measuring device 10 at the instrument erection position.

[0078] Specifically, the adsorption assembly 12 is used to fix the target measuring device 10 at the instrument erection position of the deck with the installation center point as the center point of the instrument erection position.

[0079] Step S5, according to the horizontal reference point, the target measuring device 10 is used to measure the float horizontal of the deck to obtain the post-float horizontal data.

[0080] In this embodiment, the instrument erection position includes a first erection position and a second erection position. The first erection position is the initial installation position of the target measuring device 10, and the second erection position is a plurality of instrument erection positions adjacent to the first erection position.

[0081] In the embodiment, the floating state horizontal measurement of the deck by the target measurement device 10 can include the following steps: obtaining the horizontal change amount of the second erection position; obtaining the center reference point at the second erection position according to the horizontal change amount of the second erection position and the measurement height of the target measurement device 10; establishing a horizontal measurement reference plane according to the center reference point at the second erection position and the horizontal reference points adjacent to the first erection position; and performing floating state horizontal measurement on the deck based on the horizontal measurement reference plane to obtain the post-floating state horizontal data; and moving the target measurement device 10 when the measurement line of sight of the target measurement device 10 is blocked by the obstacle on the deck to perform floating state horizontal measurement on the deck.

[0082] Specifically, referring to Figure 5 After step S4 is completed, the horizontal change amount of the second erection position can be obtained according to the pre-floating state horizontal data, the installation center point of the second erection position is moved upward to obtain the center reference point at the second erection position according to the measurement height of the target measurement device 10 and the horizontal change amount of the second erection position, the horizontal measurement reference plane is established by using the center reference point at the second erection position and the two horizontal reference points adjacent to the first erection position, and then the floating state horizontal measurement on the deck is realized. The data accuracy of the floating state horizontal measurement can be effectively improved and the measurement error can be reduced by the established horizontal measurement reference plane.

[0083] The projection point of the center reference point on the deck surface is located on the center reference line of the ship body.

[0084] In the optional embodiment, referring to Figure 5 and Figure 6 The instrument erection position further includes a third erection position, and the third erection position is the instrument erection position of the target measurement device 10 after moving. In step S5, the target measurement device 10 is moved to perform floating state horizontal measurement on the deck, including the following steps: obtaining the horizontal change amount at the third erection position; adjusting the positions of the horizontal reference points adjacent to the third erection position according to the horizontal change amount at the third erection position, and regenerating the horizontal measurement reference plane; and moving the target measurement device 10 to the third erection position to perform floating state horizontal measurement on the deck.

[0085] The step of regenerating the horizontal measurement reference plane can refer to the step of establishing the horizontal measurement reference plane described above, and the number of moving can be one or more. The floating state horizontal measurement by moving ensures that the horizontal state of the deck can be fully measured, the data accuracy of the floating state horizontal measurement can be improved, the measurement error can be reduced, and the rework rate caused by the measurement error can be reduced by regenerating the horizontal measurement reference plane after moving.

[0086] In the optional embodiment, referring to Figure 4 to Figure 6, the surface of the deck has a centerline of the hull and two centerlines of the deck which are 7500mm away from the centerline of the hull; the horizontal reference points include point A, point B, point C and point D; the projection points of point A and point C on the surface of the deck are located on one of the centerlines of the deck which are 7500mm away from the centerline of the hull, and the projection points of point B and point D on the surface of the deck are located on the other of the centerlines of the deck which are 7500mm away from the centerline of the hull. The installation center points of the instrument erection positions include point Q, point Q1 and point Q2, wherein, point Q is located between point A and point B, the position of point Q can be taken as the first erection position of the target measuring device 10, point Q1 is located between point C and point D, the position of point Q1 can be taken as the second erection position of the target measuring device 10 and the third erection position after the station moving, and point Q1 is located between point Q2 and point Q, the position of point Q2 can be taken as the second erection position of point Q1.

[0087] Specifically, referring to Figure 5 and Figure 6 , taking the horizontal variation of point Q as 0mm, the horizontal variation of the instrument erection positions of point A and point B are 3mm and 4mm respectively, the horizontal variation of point Q1 is 2mm, and the measuring height of the target measuring device 10 is 1000mm, the distances between point A, point B and the surface of the deck can be calculated as 997mm and 996mm respectively, and the distance between the center reference point above point Q1 and the surface of the deck is 998mm. Before the station moving, the target measuring device 10 is installed at point Q, and the horizontal reference surface with a height of 1000mm is formed by point A, point B and the center reference point above point Q1, and the floating state horizontal measurement is performed. The horizontal variation of the instrument erection positions of point C and point D are 4mm and 0mm respectively, the horizontal variation of point Q2 is-3mm, and the measuring height of the target measuring device 10 is 1000mm, the distances between point C, point D and the surface of the deck can be calculated as 996mm and 1000mm respectively, and the distance between the center reference point above point Q2 and the surface of the deck is 1003mm. After the station moving, the target measuring device 10 is installed at point Q1, and the horizontal reference surface is formed by point C, point D and the center reference point above point Q2, and the floating state horizontal measurement is performed.

[0088] In step S6, the floating state horizontal data after the floating state is compared with the floating state horizontal data before the floating state to form the floating state horizontal report.

[0089] In this embodiment, after the floating state horizontal data after the floating state is obtained in step S5, the floating state horizontal data before the floating state is compared to determine whether there is a deformation area on the deck. When there is a deformation area on the deck, the deformation area on the deck is detected again to form the floating state horizontal report. The deformation area means an area with a horizontal variation greater than a preset error.

[0090] Referring to Figure 7 and Figure 8 ,Figure 7 Fig. 2 shows a schematic diagram of the pre-floatation horizontal data of a deck, Figure 8 Fig. 3 shows a schematic diagram of the post-floatation horizontal data of a deck measured by the deck floatation horizontal measurement method of the present embodiment, Figure 7 and Figure 8 The numbers in each rectangular frame on the deck in Fig. 1 represent the amount of horizontal change at the current position. By comparing Figure 7 and Figure 8 it can be seen that Figure 8 the lower left corner in Fig. 1 has a deformation area of the stern gate, and the lower middle right position has a deformation area of the ramp, which is caused by the temporary support removal of the lower deck, resulting in the horizontal depression of the reference end of the ramp and the horizontal upwarp of the reference end of the stern gate.

[0091] In the present embodiment, the target measurement device 10 is used to measure the floatation horizontal of the deck, the adsorption assembly 12 can keep the relative position between the target measurement device 10 and the deck of the ship unchanged during the floatation measurement process, effectively preventing the phenomenon of increased measurement error caused by the sway of the target measurement device 10, the support column 13 can increase the measurement range of the target measurement device 10, reduce the number of station measurement, effectively improve the measurement efficiency, for example, the horizontal measurement of two decks completed by three people in one day can be optimized to the horizontal measurement of ten decks completed by two people in one day; during the measurement process, the horizontal measurement reference surface is generated by setting the horizontal reference point and the center reference point at the specific position, which can effectively improve the accuracy of the measurement data, improve the measurement accuracy, and effectively reduce the rework rate caused by measurement error; and there is no need to climb to measure, which increases the safety during the construction process, reduces the risk of safety accidents, and also provides technical support for the floatation positioning of the stern gate, side gate, ramp, and horizontal measurement of local space.

[0092] The above embodiments are only illustrative of the principles and effects of the present application, and are not intended to limit the present application. Any person skilled in the art can modify, change or combine the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical idea disclosed in the present application shall be covered by the claims of the present application.

Claims

1. A method for measuring the floating level of a deck, characterized in that: The following steps are involved: Before launching, the deck should be leveled to obtain the level data before floating; Acquire a target measurement device and set an instrument installation position of the target measurement device; Obtain and mark several horizontal reference points on the deck; Installing the target measurement device to the instrument installation location; According to the horizontal reference point, the deck is measured in a floating state by the target measurement device to obtain horizontal data after the floating state; The post-floating level data is compared with the pre-floating level data to form a floating level measurement report.

2. The deck floating level measurement method according to claim 1, characterized in that: In the step of obtaining a target measurement device, the target measurement device includes: a base plate having a first surface and a second surface disposed opposite to each other; an adsorption assembly connected to the second surface of the base plate and used to fix the target measurement device on the deck; a support column vertically connected to the first surface of the base plate; A level measuring instrument is installed at one end of the support column away from the base plate and is used to measure the level of the deck.

3. The deck floating level measurement method according to claim 2, characterized in that: In the step of obtaining the target measurement device, the target measurement device further includes a plurality of diagonal braces, which surround the outer side of the support column and are respectively connected to the support column and the base plate.

4. The deck floating level measurement method according to claim 2, characterized in that: In the step of obtaining the target measuring device, the adsorption component includes a magnetic structure, which is fixedly connected to the second surface of the base plate. The magnetic structure can adsorb the deck to fix the target measuring device on the deck and is used to identify the measuring direction of the level measuring instrument.

5. The deck floating level measurement method according to claim 2, characterized in that: In the step of obtaining the target measuring device, the support column is vertically connected to the central area of ​​the first surface of the base plate, and a mounting hole is provided at one end of the support column away from the base plate, and the level measuring instrument is fixedly mounted on the support column through the mounting hole.

6. The deck floating level measurement method according to claim 1, characterized in that: In the step of setting the instrument installation position of the target measurement device, a hull center reference line and several rib position reference lines are set on the surface of the deck, and several intersections between the several rib position reference lines and the hull center reference line are used as installation center points of the instrument installation position.

7. The deck floating level measurement method according to claim 1, characterized in that: The surface of the deck is also provided with a 7500 datum line from the center; obtaining and marking a number of horizontal datum points on the deck, including the following steps: Measure and obtain the positions of the columns on the deck; Obtaining a measurement height of the target measurement device and a horizontal change of the deck at a column position; Determining the projection position of the horizontal reference point on the horizontal reference plane of the deck according to the position of the column on the deck; According to the measured height and the horizontal change at the column position, the distance between the horizontal reference point and the deck horizontal reference plane is obtained to mark the horizontal reference point; Wherein, the projection point of the horizontal reference point on the deck surface is located on the center 7500 reference line.

8. The deck floating level measurement method according to claim 1, characterized in that: The instrument installation positions include a first installation position and a second installation position, the first installation position being the initial installation position of the target measurement device, and the second installation positions being a plurality of instrument installation positions adjacent to the first installation position; performing floating level measurement of the deck by using the target measurement device comprises the following steps: Obtaining a horizontal change in the second installation position; obtaining a central reference point at the second installation position according to a horizontal change amount of the second installation position and a measurement height of the target measurement device; establishing a horizontal measurement reference plane based on a central reference point at the second installation position and a horizontal reference point adjacent to the first installation position; Based on the horizontal measurement reference plane, performing floating level measurement on the deck to obtain horizontal data after floating; When an obstacle on the deck blocks the measurement sight line of the target measurement device, the target measurement device is moved to perform floating level measurement of the deck.

9. The deck floating level measurement method according to claim 8, characterized in that: The instrument installation position further includes a third installation position, which is the instrument installation position of the target measurement device after the station is moved; moving the target measurement device to perform floating level measurement on the deck includes the following steps: Obtaining a horizontal change at the third installation position; adjusting the position of the horizontal reference point adjacent to the third installation position according to the horizontal change at the third installation position, and regenerating the horizontal measurement reference plane; The target measurement device is moved to the third installation position to perform floating level measurement on the deck.

10. The deck floating level measurement method according to claim 1, characterized in that: The step of comparing the post-floating horizontal data with the pre-floating horizontal data comprises: Comparing the horizontal data after the floating state with the horizontal data before the floating state to determine whether there is a deformation area on the deck; When there is the deformation area on the deck, a secondary floating level detection is performed on the deformation area to generate a floating level report.

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