Assembly wire returning device and method

Abstract

The invention belongs to the technical field of ship manufacturing, and provides an assembly wire returning device and method.The device comprises a wire returning support, a movable clamp, a distance measuring assembly and an angle compass, the wire returning support comprises a base plate of a right-angle L-shaped structure and a support plate, and the movable clamp and the base plate form a clamping structure so that the assembly wire returning device can be clamped at a specific installation position; distance measurement can be carried out on points in the measurement direction of the distance measurement assembly through the distance measurement assembly, the measurement direction of the distance measurement assembly can be identified through the angle compass, and the rotation angle of the distance measurement assembly is obtained. According to the assembly line returning method, the assembly line returning device is used for conducting line returning operation, the datum line of the structural surface can be rapidly and accurately returned to the non-structural surface, the later dislocation operation is effectively reduced, the positioning period is shortened, the whole line returning operation process can be completed by one person, waste of manpower and material resources is reduced, and the production efficiency is improved. And various positioning lines required in the ship body building process can be surveyed in a free state, so that the positioning work can be conveniently and quickly completed on site.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ship manufacturing, in particular to an assembly return line device and method. BACKGROUND

[0002] The reference line of the ship plays a crucial role in the process of shipbuilding, which refers to the reference line set for determining the size and position of each part of the ship body and other parameters. In the same direction, such as X, Y and Z direction, the ship body can only set one size reference and reference line. However, in order to facilitate construction and ensure the accurate transmission of precision information, in addition to the reference line, a number of auxiliary reference lines need to be drawn according to the reference line and the theoretical size, and the overall planning needs to be completed in the precision planning stage. In the manufacturing and welding stage, the reference line is correctly applied, and the return line is returned to the non-structural surface, which provides accurate reference for the general assembly and positioning, so that the overall control of the main size of the ship body can be achieved in the whole construction process.

[0003] However, the ship body will inevitably produce large or small deformation in the manufacturing and welding stage, and the deformation caused by the installation of firework and iron equipment after the segmentation will inevitably affect the accuracy of the reference line. When the segmentation is completed, the main size, angle size, flatness, end difference and shrinkage and deformation of the structure are confirmed, and the positioning lines such as the auxiliary reference line, the reference line, the 100MK line and the matching line are returned to the non-structural surface. The commonly used return line method is to scratch the hard back surface of the structure with a stone pen and then knock the point, which has a large error due to the large welding leg of the fillet welding of the thick plate. The main plate and component shrinkage deformation caused by a large amount of firework after the segmentation of the deck and engine room section of the PCTC ship will cause a large error of the positioning line of the deck base, column and structure installation, which will lead to the mispositioning of the later structure and the frequent occurrence of the phenomenon of cutting. SUMMARY

[0004] In view of the above problems in the prior art, the purpose of the present application is to provide an assembly return line device and method, which can solve the problem of large error when returning the reference line of the structural surface to the non-structural surface in the prior art, effectively return the reference line of the structural surface to the non-structural surface, reduce the mispositioning of the later structure and the phenomenon of cutting, and shorten the positioning cycle and improve the work efficiency.

[0005] To achieve the above purpose and other related purposes, the present application provides an assembly return line device, comprising:

[0006] The return line support comprises a base plate and a support plate, the support plate is vertically connected to one end of the base plate, the return line support is in a right angle L-shaped structure, the thickness direction of the support plate is the first direction, the thickness direction of the base plate is the second direction, and the third direction is perpendicular to the first direction and the second direction respectively;

[0007] a movable clamp connected to the bracket plate and forming a clamping structure with the base plate;

[0008] a distance measuring component connected to an end of the bracket plate away from the base plate, wherein a measuring direction of the distance measuring component is perpendicular to the third direction;

[0009] An angle compass is located on at least one side of the distance measuring component along the third direction, and is used to identify the measuring direction of the rangefinder.

[0010] Optionally, a first hole extending through the base plate along the second direction is provided in the base plate. When viewed from above along the second direction, the first hole extends from an end of the base plate away from the bracket plate to the bracket plate along the first direction.

[0011] Optionally, the ranging component includes:

[0012] A rangefinder, wherein a second hole is provided at one end of the support plate away from the base plate, the second hole passes through the support plate along the first direction, the rangefinder is located in the second hole, and the angle compass is located on opposite sides of the rangefinder along the third direction;

[0013] an axis frame connected to one end of the bracket plate away from the base plate and located at opposite ends of the second hole slot along the third direction, the angle compass connected to the side wall of the second hole slot and / or the axis frame;

[0014] A first rotating shaft passes through the axis frame and the angle compass and is connected to the rangefinder to fix the rangefinder in the second hole groove. The first rotating shaft can rotate in the axis frame to rotate the rangefinder around the axis of the first rotating shaft.

[0015] Optionally, the rangefinder is a laser rangefinder, and a center line is provided on at least one side surface of the bracket plate on opposite sides along the first direction. When viewed from the side along the first direction, the projection of the laser beam emitted by the laser rangefinder is collinear with the center line.

[0016] Optionally, the support plate has a first side and a second side arranged opposite to each other along the first direction, the base plate is located on the first side of the support plate, and the movable clamp includes:

[0017] A clamping plate is located in a semi-enclosed area of ​​the return line bracket of the right-angle L-shaped structure and is spaced apart from the bracket plate;

[0018] a second rotation axis connected to a side of the clamping plate away from the base plate;

[0019] a third rotating shaft, wherein the bracket plate is further provided with a mounting hole penetrating along the first direction, and the third rotating shaft is connected to a side wall of the mounting hole;

[0020] a clamping rod, rotatably connected to the second rotation axis and the third rotation axis, and extending to the second side of the bracket plate;

[0021] The tension elastic member is located on the second side of the bracket plate and is respectively connected to the bracket plate and the clamping plate.

[0022] Optionally, the tensioning elastic member includes a spring, an upper end buckle and a lower end buckle, the upper end buckle is connected to the bracket plate, the lower end buckle is connected to the side of the clamping rod away from the clamping plate, and the spring is respectively connected to the lower end buckle and the upper end buckle.

[0023] Optionally, the movable clamp further includes a connecting rod, a first handle and a second handle, wherein the first handle is connected to an end of the clamp rod away from the clamp plate, the connecting rod is located on the second side of the bracket plate and is connected to an end of the bracket plate close to the base plate, and the second handle is connected to an end of the connecting rod away from the bracket plate.

[0024] The present application also provides an assembly return line method, which utilizes any of the assembly return line devices in the aforementioned embodiments to return the baseline during the hull construction process, comprising the following steps:

[0025] Obtaining the first datum line and the second datum line of the hull structural surface, as well as the no-residue datum edge and target theoretical installation dimensions of the hull non-structural surface;

[0026] The endpoints of the first reference line on the structural surface are reflected back to the corresponding positions of the non-structural surface as first points, and the endpoints of the second reference line on the structural surface are reflected back to the corresponding positions of the non-structural surface as second points;

[0027] Installing the assembly return line device to the zero-residue reference edge and aligning it with the first point and the second point;

[0028] According to the target theoretical installation size, the assembly return line device is used to perform return line at the rendezvous point to determine the theoretical installation reference point.

[0029] Optionally, using the assembly return line device to return the line at the docking point includes the following steps:

[0030] Connecting a plurality of the first points to draw a first reference line on the non-structural surface;

[0031] Connecting a plurality of said second points to draw a second reference line on the non-structural surface;

[0032] Obtain an intersection point F between a first reference line and a second reference line on the non-structured surface;

[0033] According to the target theoretical installation size, the theoretical installation reference point on the non-structural surface is obtained by a three-step intersection method, and the accuracy is verified with the intersection point F.

[0034] Optionally, a three-step intersection method is used to obtain a theoretical installation reference point on the non-structural surface, and accuracy verification is performed with the intersection point F, including the following steps:

[0035] According to the target theoretical installation size, the distance between the theoretical installation reference point and the first point is obtained and recorded as a first distance;

[0036] Using the assembly return line device, the distance between the measurement zero point of the distance measuring component and the first point is measured and recorded as the second distance;

[0037] According to the first distance and the second distance, the distance between the measurement zero point of the distance measuring component and the theoretical installation reference point is obtained as a third distance, and a theoretical rotation angle of the distance measuring component when the distance measuring component is at a reciprocating point is determined;

[0038] According to the third distance and the theoretical rotation angle, using the distance measuring component to obtain a theoretical installation reference point on the non-structural surface;

[0039] The deviation distance between the theoretical installation reference point and the first point is calculated, and the corresponding hull components are adjusted so that the deviation distance is less than or equal to a preset error.

[0040] As described above, compared with the prior art, the assembly return line device and method provided by the present application have at least the following beneficial effects:

[0041] In the assembly re-alignment device of the present application, a clamping structure is formed between the movable clamp and the base plate, which can be used to clamp the assembly re-alignment device in a specific installation position. The distance measurement component can be used to measure the distance, and the angle compass can be used to identify the measurement direction of the distance measurement component to obtain the rotation angle of the distance measurement component. Based on these functions, the assembly re-alignment device can quickly and accurately re-align the baseline of the structural surface to the non-structural surface.

[0042] The assembly re-line method of the present application utilizes an assembly re-line device to assist in the re-line operation, which can optimize the multi-person operation process into a single-person operation process, and quickly and accurately realize the re-marking operation of various positioning lines such as auxiliary reference lines, 100MK lines, and matching line equipment installation lines, thereby improving work efficiency, shortening the construction period, and reducing the waste of manpower and material resources; and utilizing the three-step cross method, it can promptly identify and correct problems that exceed the preset error range, effectively reduce or avoid the error from being transmitted to the subsequent process, and reduce the error rework rate caused by re-line to zero or close to zero. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0044] Figure 1 Shown is a structural schematic diagram of an assembly return line device provided in Example 1 of the present application.

[0045] Figure 2 Display as Figure 1 A top view of the return line bracket in the assembly return line device along the second direction shown

[0046] Figure 3 Display as Figure 1 A side view of the support plate in the assembly return line device along the first direction is shown.

[0047] Figure 4 Display as Figure 1 The structure diagram of the angle compass in the assembly return line device shown is viewed from the third direction.

[0048] Figure 5 Display as Figure 1 The schematic diagram of the structure of the movable clamp in the assembly return line device is shown.

[0049] Figure 6 Shown is a flow chart of an assembly return line method provided in Example 2 of the present application.

[0050] Figure 7 Shown is a schematic diagram of the positions of points A, B, C, and D on the non-structured surface provided in Example 2 of the present application.

[0051] Figure 8 Shown is a schematic diagram of the process of performing re-routing at a docking point using an assembly re-routing device in the assembly re-routing method provided in the second embodiment of the present application.

[0052] Figure 9 A flowchart showing a process of obtaining a theoretical installation reference point on a non-structural surface by a three-step method in the assembly return line method provided in Embodiment Two of the present application.

[0053] Figure 10 A theoretical diagram showing calculation of a third distance in the assembly return line method provided in Embodiment Two of the present application.

[0054] Reference signs are shown as follows:

[0055] 10, assembly return line device; 11, return line support; 111, base plate; 1111, first hole slot; 112, support plate; 1121, second hole slot; 1122, mounting hole; 1123, center line; 12, movable clamp; 121, clamp plate; 122, second rotation shaft; 123, third rotation shaft; 124, clamp rod; 125, tension elastic member; 1251, spring; 1252, upper end buckle; 1253, lower end buckle; 126, connecting rod; 1271, first handle; 1272, second handle; 13, distance measuring assembly; 131, distance meter; 132, shaft frame; 133, first rotation shaft; 14, angle compass; 151, first reference line; 152, second reference line. DETAILED DESCRIPTION

[0056] 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 below in conjunction with embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0057] 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 a person of ordinary skill in the art without making creative efforts 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.

[0058] 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.

[0059] In the description of this application, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. In addition, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the implementation or example are included in at least one implementation or example of this application. In this specification, the schematic representation of the above terms does not necessarily refer to the same implementation or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more implementations or examples in a suitable scheme.

[0060] Example 1

[0061] This embodiment provides an assembly return line device 10 for assisting the return line operation during the hull construction process to return the reference line of the structural surface to the non-structural surface, wherein the reference line can be, for example, an upper reference line, an auxiliary reference line, a 100MK line, a fitting line, or other suitable positioning lines. Figure 1 The assembly return line device 10 of this embodiment includes a return line bracket 11, a movable clamp 12, a distance measuring component 13 and an angle compass 14.

[0062] The return line bracket 11 includes a base plate 111 and a bracket plate 112. The bracket plate 112 is connected to one end of the base plate 111, forming a right-angled L-shaped structure. In this embodiment, the thickness direction of the bracket plate 112 is used as the first direction, the thickness direction of the base plate 111 is used as the second direction, and the third direction is perpendicular to the first and second directions. The movable clamp 12 is connected to the bracket plate 112 and forms a clamping structure with the base plate 111. The distance measuring assembly 13 is connected to the end of the bracket plate 112 away from the base plate 111. The measurement direction of the distance measuring assembly 13 is perpendicular to the third direction. The angle compass 14 is located on at least one side of the distance measuring assembly 13 along the third direction and is connected to the bracket plate 112. It is used to indicate the measurement direction of the rangefinder 131.

[0063] When in use, a clamping structure is formed between the movable clamp 12 and the base plate 111, which can clamp the assembly return line device 10 in a specific installation position. The distance measuring component 13 can be used to measure the distance of the point in its measuring direction, and the angle compass 14 can be used to identify the measuring direction of the distance measuring component 13 to obtain the rotation angle of the distance measuring component 13. Through the above functions of the assembly return line device 10, it can assist in accurately returning the baseline of the structural surface to the non-structural surface, effectively reducing the subsequent misalignment and shortening the positioning cycle. In addition, the entire return line operation process can be completed by a single person, reducing the waste of manpower and material resources. Various positioning lines required for the hull construction process can be surveyed and marked in a free state, making it convenient and quick to complete the positioning work on site.

[0064] Reference Figure 2 The base plate 111 is provided with a first hole 1111, which penetrates the base plate 111 along the second direction. When viewed from above along the second direction, the first hole 1111 extends from the end of the base plate 111 away from the bracket plate 112 along the first direction to the bracket plate 112, so as to facilitate the installation and use of the return line device 10. Optionally, the first hole 1111 can penetrate the base plate 111 along the first direction to divide the base plate 111 into two parts along the third direction.

[0065] In an optional embodiment, the base plate 111 has a length of 200 mm along the first direction, a width of 120 mm along the third direction, and a thickness of 10 mm along the second direction. The width of the first hole 1111 along the third direction is 80 mm, and the first hole 1111 extends through the base plate 111 along the first direction. It should be noted that the dimensions of the base plate 111 and the first hole 1111 can also be set to other appropriate values ​​according to actual needs.

[0066] Reference Figure 3 A second hole groove 1121 is provided at one end of the bracket plate 112 away from the base plate 111. The second hole groove 1121 penetrates the bracket plate 112 along the first direction. The second hole groove 1121 is used to provide an installation position for the ranging component 13 and the angle compass 14. The structural dimensions of the second hole groove 1121 can be set according to the structural dimensions of the ranging component 13 and the angle compass 14.

[0067] In an optional embodiment, the support plate 112 has a height of 300 mm along the second direction, a width of 120 mm along the third direction, and a thickness of 20 mm along the first direction. The second hole slot 1121 is a U-shaped slot, with its opening located on the side of the support plate 112 away from the base plate 111. The second hole slot 1121 has a width of 80 mm along the third direction and a height of 100 mm along the second direction, thereby providing sufficient installation and rotation space for the ranging assembly 13. The structural dimensions of the support plate 112 and the second hole slot 1121 can also be set to other appropriate values ​​according to actual needs, and this embodiment is not limited thereto.

[0068] Reference Figure 3 and Figure 4 The angle compass 14 is disposed in the second hole 1121. The surface of the angle compass 14 is provided with angle scale lines for marking the rotation angle of the current measurement direction of the measuring component. Optionally, the angle compass 14 can be a 360° compass, for example.

[0069] The distance measuring assembly 13 includes a distance meter 131, an axis frame 132, and a first rotation axis 133. The distance meter 131 is disposed within the second aperture 1121, and the angle compass 14 is located on at least one side of the distance meter 131 along the third direction. Optionally, there are two angle compasses 14, located on opposite sides of the distance meter 131 along the third direction.

[0070] The axis frame 132 is connected to one end of the bracket plate 112 away from the base plate 111, and is located on opposite sides of the second hole groove 1121 along the third direction, and the angle compass 14 is connected to the side wall and / or the axis frame of the second hole groove; optionally, the angle compass 14 can be connected to the axis frame 132, for example; further, the axis frame 132 passes through the angle compass 14, and the angle compass 14 and the axis frame 132 are fixedly connected.

[0071] The first rotation shaft 133 passes through the axis frame 132 and the angle compass 14 and is connected to the rangefinder 131 to fix the rangefinder 131 in the second hole 1121. The first rotation shaft 133 can rotate in the axis frame 132 to rotate the rangefinder 131 around the axis of the first rotation shaft 133. Optionally, the rangefinder 131 can be, for example, a laser rangefinder or other suitable distance measuring device. The rangefinder 131 has a length of, for example, 130 mm and a width along the first direction of, for example, 60 mm.

[0072] In an optional embodiment, the first rotating shaft 133 includes a fixing bolt and a fixing nut, one end of the fixing bolt is connected to the rangefinder 131, and the other end passes through the axis frame 132 and extends to the side of the axis frame 132 away from the second hole slot 1121. The fixing nut is located on the side of the axis frame 132 away from the second hole slot 1121 and is connected to the fixing bolt. By cooperating with the fixing bolt, the rangefinder 131 can be fixed in the second hole slot 1121, and the rangefinder 131 can be rotated around the axis of the first rotating shaft 133. At the same time, the position of the first rotating shaft 133 can be fixed to prevent the first rotating shaft 133 from rotating, thereby fixing the position of the rangefinder 131 and preventing the rangefinder 131 from rotating during measurement.

[0073] In an optional embodiment, a centerline 1123 is provided on at least one of two opposing side surfaces of the support plate 112 along the first direction. The rangefinder 131 is a laser rangefinder. When viewed from the side along the first direction, the projection of the laser beam emitted by the laser rangefinder is collinear with the centerline 1123. Providing the centerline 1123 on the surface of the support plate 112 enables rapid calibration of the measurement direction of the rangefinder 131, facilitating the positioning and installation of the assembly return line device 10.

[0074] Reference Figure 3 and Figure 5 The bracket plate 112 has a first side and a second side arranged opposite to each other along a first direction. The base plate 111 is located on the first side of the bracket plate 112. The movable clamp 12 includes a clamping plate 121, a second rotating shaft 122, a third rotating shaft 123, a clamping rod 124, and a tensioning elastic member 125. The clamping plate 121 is located in a semi-enclosed area of ​​the right-angled L-shaped return line bracket 11; the second rotating shaft 122 is connected to the side of the clamping plate 121 away from the base plate 111; the bracket plate 112 is further provided with a mounting hole 1122, which passes through the bracket plate 112 along the first direction; the third rotating shaft 123 is connected to the side wall of the mounting hole 1122; the clamping rod 124 is rotatably connected to the second rotating shaft 122 and the third rotating shaft 123, respectively, and extends to the second side of the bracket plate 112; the tensioning elastic member 125 is located on the second side of the bracket plate 112, and is connected to the bracket plate 112 and the clamping rod 124, respectively.

[0075] Among them, the clamping plate 121 and the bracket plate 112 are spaced apart, and the tensioning elastic member 125 can tighten the clamping rod 124, so that the connection end of the clamping rod 124 and the tensioning elastic member 125 tends to tend toward the bracket plate 112, and through the third rotating shaft 123, the connection end of the clamping rod 124 and the clamping plate 121 tends to tend toward the base plate 111, and through the second rotating shaft 122, the posture of the clamping plate 121 can be rotated to match the base plate 111, so that the clamping plate 121 and the base plate 111 form a clamping structure to facilitate the installation and use of the return line device 10.

[0076] In an optional embodiment, the mounting hole 1122 is located between the second hole groove 1121 and the base plate 111 along the second direction. The structural dimensions of the mounting hole 1122 can be set according to actual needs. Furthermore, the mounting hole 1122 can be, for example, a rectangular hole. The distance between the mounting hole 1122 and the surface of the base plate 111 away from the clamping plate 121 along the second direction can be, for example, 50 mm. The length of the mounting hole 1122 along the second direction is 30 mm, and the width along the third direction is 20 mm, which can reserve sufficient space for the rotation of the clamping rod 124.

[0077] In an alternative embodiment, reference Figure 5 The tensioning elastic plate includes a spring 1251, an upper end buckle 1252, and a lower end buckle 1253. The upper end buckle 1252 is connected to the bracket plate 112 and is located between the second hole slot 1121 and the mounting hole 1122 along the second direction. The lower end buckle 1253 is connected to the end of the clamping rod 124 away from the clamping plate 121. The spring 1251 is respectively connected to the lower end buckle 1253 and the upper end buckle 1252 to achieve tight tension on the clamping rod 124. Furthermore, the upper end buckle 1252 and the bracket plate 112, and the lower end buckle 1253 and the clamping rod 124 are both fixedly connected.

[0078] In an alternative embodiment, reference Figure 5 The movable clamp 12 also includes a connecting rod 126, a first handle 1271, and a second handle 1272. The first handle 1271 is connected to the end of the clamping rod 124 away from the clamping plate 121. The connecting rod 126 is located on the second side of the bracket plate 112 and is connected to the end of the bracket plate 112 close to the base plate 111. The second handle 1272 is connected to the end of the connecting rod 126 away from the bracket plate 112. Furthermore, the first handle 1271 and the clamping rod 124, the second handle 1272 and the connecting rod 126, and the connecting rod 126 and the bracket plate 112 are all fixedly connected. By providing the first handle 1271 and the second handle 1272, the assembly return device 10 can be clamped in a specific position more conveniently and quickly, which facilitates the installation and use of the assembly return device 10 and improves work efficiency.

[0079] In an optional embodiment, the splint 121 is a rectangular plate, the length of the splint 121 along the first direction is, for example, 80 mm, the width along the third direction is, for example, 120 mm, and the thickness along the second direction is, for example, 10 mm; the second rotating axis 122 is connected to the center position of the splint 121 along the first direction, and its axial direction is along the third direction; the length of the clamping rod 124 located between the second rotating axis 122 and the third rotating axis 123 is, for example, 80 mm, so that the splint 121 and the bracket plate 112 are spaced apart; the distance from the third rotating axis 123 to the end of the first handle is, for example, 150 mm, and the axial direction of the third rotating axis 123 is along the third direction.

[0080] Example 2

[0081] This embodiment provides a method for assembling a return line, using any one of the assembly return line devices 10 in the first embodiment to return the baseline during the hull construction process. Figure 6 The assembly return line method of this embodiment includes steps S1 to S4, which are described in detail as follows.

[0082] Step S1: Acquire the first reference line 151 and the second reference line 152 of the hull structural surface, as well as the zero-residue reference edge and target theoretical installation dimensions of the hull non-structural surface.

[0083] In this embodiment, executing step S1 may include the following steps: obtaining a ship construction drawing; and obtaining a first reference line 151 , a second reference line 152 , a zero-residue reference edge, and a target theoretical installation dimension based on the ship construction drawing.

[0084] Reference Figure 7 Types of return line operations can include deck return lines and inclined plate return lines. Deck return lines include PCTC car deck column installation lines, and inclined plate return lines include LNG carrier pipe rack unit installation lines and pipe rack web installation lines. Alternatively, taking the return line operation for the 647-block deck column installation line of a PCTC car roll-on / roll-off ship as an example, the construction drawings may include one or more of the following: hull block division drawings, hull reference line layout drawings, block construction drawings, 647-block 100MK column installation drawings, and other appropriate drawings. The first reference line 151 may be, for example, a bow and stern reference line, specifically, the rib position FR107 reference line. The second reference line 152 may be, for example, a width reference line, specifically, the 7500-degree center reference line. The target theoretical installation dimension, for example, the theoretical installation position of the 100MK column, may be obtained from the ship's construction drawings.

[0085] Step S2: several endpoints of the first reference line 151 on the structural surface are reflected to the corresponding positions of the non-structural surface as first points, and several endpoints of the second reference line 152 on the structural surface are reflected to the corresponding positions of the non-structural surface as second points.

[0086] Among them, when refuting the endpoints of the first reference line 151 and the second reference line 152 on the structural surface, the refuting method in the prior art can be used to refute them to obtain the corresponding first points and second points on the non-structural surface; specifically, for example, a slate pencil or other suitable methods can be used to refute the above-mentioned endpoints on the structural surface to the non-structural surface.

[0087] In an alternative embodiment, reference Figure 7The steps of executing step S2 include: reversing the two endpoints of the first reference line 151 on the structural surface to the corresponding positions of the non-structural surface and recording them as points C and D; reversing the two endpoints of the second reference line 152 on the structural surface to the corresponding positions of the non-structural surface and recording them as points A and B.

[0088] Furthermore, points A, B, C, and D are all located on the no-residue reference edge. Figure 7 The zero-allowance reference edge is the zero-allowance end edge of the non-structured surface shown in the figure. For example, the zero-allowance reference edge may include a first zero-allowance end edge and a second zero-allowance end edge. The first zero-allowance end edge is parallel to the first reference line 151, and points C and D are located on the first zero-allowance end edge. The second zero-allowance end edge is parallel to the second reference line 152, and points A and B are located on the second zero-allowance end edge. Furthermore, point D is closer to the theoretical installation reference point than point C, and point B is closer to the theoretical installation reference point than point A.

[0089] Step S3: Install the assembly return line device 10 to the reference edge with no margin, and align it with the first point and the second point.

[0090] Reference Figure 7 , use the clamping structure formed by the base plate 111 and the movable clamp 12 to install the assembly return line device 10 to the zero-residue reference edge, so that the clamping plate 121 of the movable clamp 12 is tightly attached to the non-structural surface, and the center line 1123 of the surface of the bracket plate 112 is aligned with the first point and the second point, the surface of the bracket plate 112 on one side along the second direction is aligned with the zero-residue reference edge, and the center line 1123 forms a 90° angle with the non-structural surface.

[0091] In an optional embodiment, using the example of the assembly line return operation for the column positions of the section deck of PCTC car ro-ro ship 647, the clamping structure formed by the base plate 111 and the movable clamp 12 is used to clamp the T-row web plate, so that the first hole groove 1111 of the base plate 111 clamps the lower end of the T-row web plate, thereby installing the assembly line return device 10 to the reference edge with no margin. The centerline 1123 of one assembly line return device 10 can be aligned with point B, and the centerline 1123 of the other assembly line return device 10 can be aligned with point D; or the centerline 1123 of the assembly line return device 10 can be aligned with point B, and after completing the subsequent re-return between points A and B, it can be moved to align with point D to complete the re-return between points C and D.

[0092] Step S4: Based on the target theoretical installation size, the assembly return line device 10 is used to return the assembly line to determine the theoretical installation reference point.

[0093] Reference Figure 7After the installation and assembly of the assembly return line device 10 are completed, the range finder 131 in the range finding assembly 13 is turned on, the first point and the second point are marked respectively by using the range finder 131, and a plurality of first points and a plurality of second points are connected, the first reference line 151 and the second reference line 152 are drawn on the non-structural surface, and the intersection F between the first reference line 151 and the second reference line 152 is marked. Then, the theoretical installation reference point is obtained according to the target theoretical installation size, and the deviation between the theoretical installation reference point and the intersection F meets the design requirement.

[0094] In an optional embodiment, referring to Figure 8 , the step S4 of performing the point return line by using the assembly return line device 10 includes the following steps.

[0095] S41, connecting a plurality of first points to draw the first reference line 151 on the non-structural surface;

[0096] S42, connecting a plurality of second points to draw the second reference line 152 on the non-structural surface;

[0097] S43, obtaining the intersection F between the first reference line 151 and the second reference line 152 on the non-structural surface;

[0098] S44, obtaining the theoretical installation reference point on the non-structural surface by the three-step intersection method according to the target theoretical installation size, and performing accuracy verification with the intersection F.

[0099] In the steps S41 and S42, the first points include the point C and the point D, and the point C and the point D are connected to draw the first reference line 151 on the non-structural surface; the second points include the point A and the point B, and the point A and the point B are connected to draw the second reference line 152 on the non-structural surface. The connection can be performed by a spring line, or the connection can be performed by using the assembly return line device 10, or other suitable connection methods can be used.

[0100] In the step S43, the intersection F between the first reference line 151 and the second reference line 152 can be used as the installation reference point of the target component, for example, the installation reference point of the column.

[0101] In an optional embodiment, referring to Figure 9 , the step S44 of performing the point return line by using the assembly return line device 10 includes the following steps.

[0102] S441, obtaining the distance between the theoretical installation reference point and the first point as a first distance according to the target theoretical installation size;

[0103] S442, measuring the distance between the measurement zero point of the range finding assembly 13 and the first point as a second distance by using the assembly return line device 10;

[0104] S443. Based on the first distance and the second distance, obtain the distance between the measurement zero point of the distance measuring component 13 and the theoretical installation reference point as a third distance, and determine the theoretical rotation angle of the distance measuring component 13 when the distance measuring component 13 is at the reference point.

[0105] S444: Based on the third distance and the theoretical rotation angle, use the distance measuring component 13 to measure the point to obtain a theoretical installation reference point;

[0106] S445. Calculate the deviation distance between the theoretical installation reference point and the intersection point F, and adjust the corresponding hull components so that the deviation distance is less than or equal to the preset error.

[0107] Reference Figure 10 In steps S441 to S443, the first point includes point C and point D, the first distance between point D and the intersection point F is recorded as b1, the second distance is recorded as b2, and the third distance is recorded as b3, wherein the third distance b3 2 =b1 2 +b2 2 , the theoretical rotation angle θ = arctan(b1 / b2).

[0108] In an optional embodiment, taking the installation line return operation of the column position of the 647 section deck of the PCTC car roll-on / roll-off ship as an example, the target theoretical installation size is, for example, 2450 mm, and the thickness of the bracket plate 112 in the assembly return device 10 is 20 mm, then the first distance b1=2450 mm+0.5*20 mm, and the measured second distance is, for example, 290 mm, and b3≈2477 mm can be calculated. The theoretical rotation angle θ=arctan(b1 / b2)≈83.3°, the rotation angle of the rangefinder 131 is controlled to be the above theoretical rotation angle, and the reading of the rangefinder 131 is made to be the third distance to obtain the theoretical installation reference point on the non-structural surface.

[0109] When the distance deviation between the theoretical installation reference point and intersection F exceeds a preset error, the corresponding hull component is adjusted to ensure that the theoretical installation reference point and intersection F coincide or substantially coincide, or to ensure that the deviation between the theoretical installation reference point and intersection F is less than or equal to the preset error. This effectively prevents the error from being transmitted to subsequent processes, thereby reducing the occurrence of problems such as misalignment and cutting in subsequent processes. Optionally, the preset error can be set to 0.5mm, for example. When the deviation is within the preset error range, the deformation of the hull component at this time can be considered acceptable.

[0110] In the embodiment, the assembly return line device is used to assist in return line operation, which can optimize the multi-person operation process into a single-person operation process, quickly and accurately complete the return line operation on the positioning lines such as auxiliary reference line, 100MK line, and matching line equipment installation line, improve work efficiency, shorten construction period, and reduce waste of human and material resources. In addition, the three-step cross method can timely determine and correct problems beyond the preset error range, effectively reduce or avoid error transmission to the subsequent process, and reduce the error rework rate caused by return line to zero or close to zero. Moreover, the method can accurately measure the distance and point deviation of any reference line in a larger range at the no-residual end, reduce the movement of the line and the inspection personnel, improve the construction safety, and effectively reduce the risk of safety accidents.

[0111] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used 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 completed by those skilled in the art without departing from the spirit and technical idea disclosed in the present application should be covered by the claims of the present application.

Claims

1. An assembly return line device, characterized in that: include: A return line bracket, comprising a base plate and a bracket plate, wherein the bracket plate is vertically connected to one end of the base plate, so that the return line bracket has a right-angle L-shaped structure, with the thickness direction of the bracket plate as the first direction, the thickness direction of the base plate as the second direction, and the third direction being perpendicular to the first direction and the second direction respectively; a movable clamp connected to the bracket plate and forming a clamping structure with the base plate; a distance measuring component connected to an end of the bracket plate away from the base plate, wherein a measuring direction of the distance measuring component is perpendicular to the third direction; An angle compass is located on at least one side of the distance measuring component along the third direction, and is used to identify the measuring direction of the rangefinder.

2. The assembly return line device according to claim 1, characterized in that: The base plate is provided with a first hole extending through the second direction. When viewed from above along the second direction, the first hole extends from an end of the base plate away from the bracket plate to the bracket plate along the first direction.

3. The assembly return line device according to claim 1, characterized in that: The ranging component includes: A rangefinder, wherein a second hole is provided at one end of the support plate away from the base plate, the second hole passes through the support plate along the first direction, the rangefinder is located in the second hole, and the angle compass is located on opposite sides of the rangefinder along the third direction; an axis frame connected to one end of the bracket plate away from the base plate and located on two opposite sides of the second hole slot along the third direction, the angle compass connected to the side wall of the second hole slot and / or the axis frame; A first rotating shaft passes through the axis frame and the angle compass and is connected to the rangefinder to fix the rangefinder in the second hole groove. The first rotating shaft can rotate in the axis frame to rotate the rangefinder around the axis of the first rotating shaft.

4. The assembly return line device according to claim 3, characterized in that: The rangefinder is a laser rangefinder, and a center line is provided on at least one side surface of the bracket plate on both sides opposite to each other along the first direction. When viewed from the side along the first direction, the projection of the laser beam emitted by the laser rangefinder is collinear with the center line.

5. The assembly return line device according to claim 1, characterized in that: The support plate has a first side and a second side disposed opposite to each other along the first direction, the base plate is located on the first side of the support plate, and the movable clamp includes: A clamping plate is located in a semi-enclosed area of ​​the return line bracket of the right-angle L-shaped structure and is spaced apart from the bracket plate; a second rotation axis connected to a side of the clamping plate away from the base plate; a third rotating shaft, wherein the bracket plate is further provided with a mounting hole penetrating along the first direction, and the third rotating shaft is connected to a side wall of the mounting hole; a clamping rod, rotatably connected to the second rotation axis and the third rotation axis, and extending to the second side of the bracket plate; The tension elastic member is located on the second side of the bracket plate and is respectively connected to the bracket plate and the clamping rod.

6. The assembly return line device according to claim 5, characterized in that: The tensioning elastic member includes a spring, an upper end buckle and a lower end buckle, the upper end buckle is connected to the bracket plate, the lower end buckle is connected to the end of the clamping rod away from the clamping plate, and the spring is respectively connected to the lower end buckle and the upper end buckle.

7. The assembly return line device according to claim 6, characterized in that: The movable clamp also includes a connecting rod, a first handle and a second handle, the first handle being connected to an end of the clamp rod away from the clamp plate, the connecting rod being located on the second side of the bracket plate and connected to an end of the bracket plate close to the base plate, and the second handle being connected to an end of the connecting rod away from the bracket plate.

8. An assembly return line method, using the assembly return line device according to any one of claims 1 to 7 to return the baseline during the hull construction process, characterized in that: The following steps are involved: Obtaining the first datum line and the second datum line of the hull structural surface, as well as the no-residue datum edge and target theoretical installation dimensions of the hull non-structural surface; The endpoints of the first reference line on the structural surface are reflected back to the corresponding positions of the non-structural surface as first points, and the endpoints of the second reference line on the structural surface are reflected back to the corresponding positions of the non-structural surface as second points; Installing the assembly return line device to the zero-residue reference edge and aligning it with the first point and the second point; According to the target theoretical installation size, the assembly return line device is used to perform return line at the rendezvous point to determine the theoretical installation reference point.

9. The assembly return method according to claim 8, characterized in that: Using the assembly return line device to perform re-line at a rendezvous point includes the following steps: Connecting a plurality of the first points to draw a first reference line on the non-structural surface; Connecting a plurality of said second points to draw a second reference line on the non-structural surface; Obtain an intersection point F between a first reference line and a second reference line on the non-structured surface; According to the target theoretical installation size, the theoretical installation reference point on the non-structural surface is obtained by a three-step intersection method, and the accuracy is verified with the intersection point F.

10. The assembly return method according to claim 9, characterized in that: The theoretical installation reference point on the non-structural surface is obtained by a three-step intersection method, and the accuracy is verified with the intersection point F, including the following steps: According to the target theoretical installation size, the distance between the theoretical installation reference point and the first point is obtained and recorded as a first distance; Using the assembly return line device, the distance between the measurement zero point of the distance measuring component and the first point is measured and recorded as the second distance; According to the first distance and the second distance, the distance between the measurement zero point of the distance measuring component and the theoretical installation reference point is obtained as a third distance, and a theoretical rotation angle of the distance measuring component when the distance measuring component is at a reciprocating point is determined; According to the third distance and the theoretical rotation angle, using the distance measuring component to obtain a theoretical installation reference point on the non-structural surface; The deviation distance between the theoretical installation reference point and the first point is calculated, and the corresponding hull components are adjusted so that the deviation distance is less than or equal to a preset error.

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