Support method for a stern large hull section and a ship

Abstract

The application discloses a supporting method for a stern large-line type section and a ship, and the method comprises the following five steps: sequentially determining the theoretical coordinate position of a supporting seat according to drawing data, sequentially measuring and calculating the coordinate position of a ground center point corresponding to the supporting seat and marking the ground, hoisting a stabilizing frame and adjusting the position, measuring and calculating the coordinate value of a supporting point in the height direction and adjusting the height of the stabilizing frame, hoisting the section and forming support, wherein the application takes the theoretical coordinate position of the center point of a reference sub-section deck and the actual position of the center line of the ship body on the ground as the reference, uses a total station instrument to draw the actual position of the stabilizing frame serving as the supporting equipment, pre-places the stabilizing frame to the theoretical position, and then takes the height of the reference sub-section deck as the reference to measure and pre-adjust the height of the top supporting point of the stabilizing frame, so that the once supporting of the stern large-line type section hoisting can be in place.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of shipbuilding, and particularly relates to a stern large-line type section support method and a ship. BACKGROUND

[0002] With the development of shipbuilding technology, most ship sterns are built in the form of sections, and the section building method can improve manufacturing efficiency and reduce costs, and also improve construction quality and facilitate maintenance and maintenance. The section building method has become one of the main trends of modern shipbuilding industry, and has achieved wide application and development in the field of shipbuilding. However, the weight of the section is heavy, the line type changes greatly, and there is only a bow and stern end surface connection with the loading reference. The fixing after loading mainly relies on the support of the stern support equipment. If the position and height of the stern support are not prepared accurately in advance before the section is hoisted, the section cannot be hoisted and the hook is released, which affects the safety and efficiency of the stern large-line type section hoisting.

[0003] The existing Chinese patent application document with the publication number CN111017139A discloses a ship bow and stern line type large area section loading operation method. The ship section is hoisted from the total assembly platform to the dock by the crane, and the super-high support is used to complete the support of the section. The super-high support includes a lower base and an upper support pipe. The upper support pipe also serves as a section assembly support. After the assembly is completed, the upper support pipe is hoisted together with the section structure to the loading position and falls on the top end of the support lower base. The support and the constraint weld ensure that the section is safely in place, and then the crane is released. The loading operation method includes the following steps: first, before the section assembly, the assembly support is placed on the assembly platform. The assembly support adopts a stable frame support form. The bottom of the upper support pipe is fixed by a small elbow plate and a stable frame. Second, after the section positioning is completed, the support is adjusted to the position. The top plate of the upper support pipe is tightly connected with the bottom plate of the support seat, and is welded. Third, before the section loading, according to the positioning size of the loading support in the section loading support arrangement diagram, the lower base is placed in position by the crane in advance. Fourth, during the section loading, the weld between the upper support pipe and the stable frame and the small elbow plate is opened, so that the upper support pipe is hoisted together with the section structure. The upper support pipe falls on the top end of the lower base. After positioning is completed, the large elbow plate prepared in advance is used to constrain and fix the bottom of the upper support pipe and the top plate of the lower base. Fifth, when the support is removed, the support seat is cut off from the outer plate as a whole. The crane lifts the upper support pipe, and then the connection weld between the upper support pipe and the lower base is opened. The upper support pipe is hoisted out, and finally the lower base is lifted away by the crane. SUMMARY

[0004] To solve the problems in the prior art described above, the purpose of the present application is to provide a stern large line type section support method and a ship, wherein the method is based on the coordinate position of the center point of the reference section deck and the position of the ground hull center line according to the design drawing size, and the actual position of the theodolite support equipment is drawn, and the equipment is placed in the theoretical position; then the height of the top of the equipment is measured based on the height of the reference section deck, and after adjustment, the one-time support of the stern large line type section is in place.

[0005] To achieve the above object and other related objects, the present application adopts the following technical solutions:

[0006] In the first aspect of the present application, a stern large line type section support method is provided, comprising the following steps,

[0007] Step one, the theoretical coordinate positions (X n , Y n , Z n ) of the support seats are determined according to the drawing data in sequence:

[0008] The theoretical coordinate value X n of the support seat in the length direction of the hull, the theoretical coordinate value Y n of the support seat in the width direction of the hull, and the theoretical coordinate value Z n of the support seat in the height direction are determined in sequence according to the drawing data;

[0009] Step two, the coordinate positions of the ground center points corresponding to the support seats are measured and marked on the ground in sequence;

[0010] Step three, hoist the theodolite support frame and adjust the position:

[0011] The theodolite support frame for supporting the section is hoisted to the ground mark at the ground center point corresponding to the support seat in sequence, the coordinate position of the top support point of the theodolite support frame is measured in sequence, and the coordinate position of the top support point is adjusted to be the same as the theoretical coordinate position (X n , Y n ) of the support seat;

[0012] Step four, measure the coordinate value of the support point in the height direction and adjust the height of the theodolite support frame:

[0013] The coordinate value of the support point in the height direction is measured and converted, and the height position of the theodolite support frame is adjusted so that the support point is lower than the theoretical coordinate value Z n of the support seat;

[0014] Step five, hoist the section and form support:

[0015] Hoist the total section to the predetermined installation position, and sequentially raise the stabilizing frame to make the top support point of the stabilizing frame closely support the lower end surface of the corresponding support seat of the stabilizing frame.

[0016] As a preferred technical solution, the specific steps of step two include: erecting a total station on the deck of the reference segment, and sequentially measuring and converting the coordinate position of the ground center point corresponding to the support seat through the total station based on the coordinate position of the center point of the deck of the reference segment and the position of the center line of the hull ground, so that the coordinate value of the coordinate position of the ground center point in the hull length direction is the same as the theoretical coordinate value X n of the support seat, and the coordinate value of the coordinate position of the ground center point in the hull width direction is the same as the theoretical coordinate value Y n of the support seat, and then marking the ground according to the coordinate position of the ground center point corresponding to the support seat.

[0017] As a preferred technical solution, the specific steps of step three include: sequentially hoisting the stabilizing frame for supporting the total section to the ground mark of the ground center point corresponding to the support seat, sequentially measuring the coordinate value of the top support point of the stabilizing frame in the hull length direction and the coordinate value in the hull width direction through the total station, and adjusting the position of the stabilizing frame on the ground through fine adjustment, so that the coordinate value of the coordinate position of the support point in the hull length direction is the same as the theoretical coordinate value X n of the support seat, and the coordinate value of the coordinate position of the support point in the hull width direction is the same as the theoretical coordinate value Y n of the support seat, and finally the coordinate position of the support point is (X n , Y n ).

[0018] As a preferred technical solution, the specific steps of step four include: taking the coordinate value of the center point of the deck of the reference segment in the height direction as a reference, measuring and converting the coordinate value of the support point in the height direction through the total station, and adjusting the height of the stabilizing frame by adjusting the top screw support of the stabilizing frame, so that the coordinate value of the support point in the height direction is lower than the theoretical coordinate value Z n of the support seat in the height direction.

[0019] As a preferred technical solution, the specific steps of step five include: adjusting the horizontal state and height value of the total section to the predetermined installation position, and sequentially rotating and raising the top screw support of the stabilizing frame, so that the top support point of the stabilizing frame closely supports the lower end surface of the corresponding support seat of the stabilizing frame.

[0020] In the second aspect of the present application, a ship is provided, which includes a stern large-line total section provided with a support seat, and the total section and the corresponding reference segment are assembled by the above-mentioned support method.

[0021] As described above, the present application has the following beneficial effects:

[0022] (1) The supporting method of the stern large hull form section of the present application can ensure that the height of the stabilizing frame for supporting the stern large hull form section meets the requirements by pre-placing the equipment top height based on the loading reference section deck height and adjusting it, thereby avoiding deviation and instability during subsequent loading work, and having an important reference effect on the installation and construction of subsequent stern components, and improving the safety and efficiency of the hoisting of the stern large hull form section.

[0023] (2) The supporting method of the stern large hull form section of the present application can ensure the accuracy of the position and height, and can fully ensure the close support of the stabilizing frame and the stern large hull form section by drawing the actual position where the stabilizing frame as the supporting equipment should be placed based on the X and Y values of the loading reference section deck center point, thereby achieving one-time support in place and saving time cost.

[0024] (3) The supporting method of the stern large hull form section of the present application uses a total station for measurement, which can achieve high-precision and high-efficiency measurement, and can quickly and simply determine the actual position where the stabilizing frame as the supporting equipment should be placed, thereby achieving the effect of ensuring one-time support in place of the stern large hull form section of the ship. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic view of the stern large hull form section and the supporting seat of the present application.

[0026] Figure 2 is a schematic view of the positioning of the stern support position in the supporting method of the stern large hull form section of the present application.

[0027] Figure 3 is a schematic view of the determination of the stern support height and position in the supporting method of the stern large hull form section of the present application.

[0028] Figure 4 is a schematic view of the support of the stern large hull form section in the supporting method of the stern large hull form section of the present application.

[0029] Among them, the specific description of the reference signs is as follows: stern large hull form section 1, supporting seat 2, loading reference section 3, deck center point 4, hull ground center line 5, supporting seat corresponding ground center point 6, stabilizing frame 7, stabilizing frame top support point 8. DETAILED DESCRIPTION

[0030] In order to better understand the purpose, structure and function of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments.

[0031] In the description of the present application, it should be noted that the positional relationships indicated in the present specification, such as "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular direction, and therefore cannot be understood as limiting the present application.

[0032] The present embodiment provides a support method for stern large line type section 1, which is used to support the assembly adjustment process between the stern large line type section 1 and the corresponding reference section 3. The front end face of the stern large line type section 1 is provided with n support seats 2. The support method comprises the following steps,

[0033] Step one, according to the drawing data, the theoretical coordinate positions (X n , Y n , Z n ) of the support seats 2 are sequentially found and determined. The coordinate units are all mm:

[0034] According to the drawing data, the theoretical coordinate positions (X n , Y n , Z n ) of the support seats 2 are sequentially found and determined. The X n value is the theoretical coordinate value of the support seat 2 in the length direction of the hull, the Y n value is the theoretical coordinate value of the support seat 2 in the width direction of the hull, and the Z n value is the theoretical coordinate value of the support seat 2 in the height direction. As shown in Figure 1 , in the present embodiment, the stern large line type section 1 has four support seats 2. The front end face of the stern large line type section 1 is sequentially provided with a first support seat 2, a second support seat 2, a third support seat 2 and a fourth support seat 2 from left to right. The theoretical coordinates of the first support seat 2 are (X1, Y1, Z1), the theoretical coordinates of the second support seat 2 are (X2, Y2, Z2), the theoretical coordinates of the third support seat 2 are (X3, Y3, Z3), and the theoretical coordinates of the fourth support seat 2 are (X4, Y4, Z4);

[0035] Step two, the coordinate positions of the ground center points corresponding to the support seats 2 are sequentially measured and marked on the ground:

[0036] A total station is set up on the deck carrying reference section 3. Based on the coordinates of the center point 4 of the deck carrying reference section 3 and the position of the ship's ground centerline 5, the coordinates of the ground center point corresponding to the support 2 are calculated sequentially using the total station. The coordinates of the ground center point are the same as the theoretical coordinates of the support 2 in both the length and width directions of the ship. That is, the coordinates of the ground center point corresponding to the support 2 are (X... n Y n ),like Figure 2 As shown, in this embodiment, the ground center point 6 corresponding to the first support 2 is (X1, Y1), the ground center point 6 corresponding to the second support 2 is (X2, Y2), the ground center point 6 corresponding to the third support 2 is (X3, Y3), and the ground center point 6 corresponding to the fourth support 2 is (X4, Y4). The coordinate positions of the ground center points corresponding to the support 2 are marked on the ground in sequence.

[0037] Step 3: Hoist the stabilizer 7 and adjust its position:

[0038] Using a crane, the stabilizer 7, which supports the stern section 1, is sequentially hoisted to the ground markings corresponding to the center points of the support bases 2. The coordinates of the top support point 8 of the stabilizer 7 in both the length and width directions of the hull are measured sequentially using a total station. The position of the stabilizer 7 on the ground is adjusted so that the coordinates of the top support point 8 in both the length and width directions match the theoretical coordinates of the support base 2. That is, the coordinates of the top support point 8 are (X... n Y n ),like Figure 3 As shown, in this embodiment, the coordinate position of the top support point 8 of the stabilizer 7 corresponding to the first support seat 2 is (X1, Y1), the coordinate position of the top support point 8 of the stabilizer 7 corresponding to the second support seat 2 is (X2, Y2), the coordinate position of the top support point 8 of the stabilizer 7 corresponding to the third support seat 2 is (X3, Y3), and the coordinate position of the top support point 8 of the stabilizer 7 corresponding to the fourth support seat 2 is (X4, Y4).

[0039] Step 4: Calculate the coordinates of support point 8 in the height direction and adjust the height of stabilizer 7:

[0040] Using the coordinates of the center point 4 of the deck on the reference segment 3 in the height direction as a benchmark, the coordinates of the support point 8 in the height direction are calculated by measuring with a total station. The height of the stabilizer 7 is adjusted by adjusting the helical support at the top of the stabilizer 7, so that the coordinates of the support point 8 in the height direction are greater than the theoretical coordinates Z of the support base 2 in the height direction. n Low H, such as Figure 3As shown, in the embodiment, H=200mm, at this time, the coordinate value of the top support point 8 of the gimbals 7 corresponding to the first support seat 2 in the height direction is Z1-200, the coordinate value of the top support point 8 of the gimbals 7 corresponding to the second support seat 2 in the height direction is Z2-200, the coordinate value of the top support point 8 of the gimbals 7 corresponding to the third support seat 2 in the height direction is Z3-200, and the coordinate value of the top support point 8 of the gimbals 7 corresponding to the fourth support seat 2 in the height direction is Z4-200.

[0041] Step five, hoisting the stern large hull section 1 to form a support: after the support pre-dancing of the gimbals 7 is completed, the hoisting operation of the stern large hull section 1 is performed, as shown in FIG. 6. Figure 4 As shown, in the embodiment, the horizontal state and the height value of the stern large hull section 1 are adjusted to the predetermined installation position, the hydraulic vehicle is used to climb to rotate and raise the top screw support of the gimbals 7 in sequence, so that the top support point 8 of the gimbals 7 is in close contact with the lower end surface of the support seat 2 corresponding to the gimbals 7, so as to guarantee the safety and efficiency of the hoisting of the stern large hull section 1, and the hook can be released after the support work is completed.

[0042] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any person skilled in the art can make various changes or equivalent replacements to the features and embodiments without departing from the spirit and scope of the present application. In addition, the features and embodiments can be modified to adapt to specific conditions and materials under the guidance of the present application without departing from the spirit and scope of the present application. Therefore, the present application is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are within the scope of the present application.

Claims

1. A method for supporting a stern section with a large linear profile, used to support the assembly and adjustment process between the stern section with a large linear profile (1) and a corresponding mounting reference section (3), wherein the front end surface of the stern section with a large linear profile (1) is provided with n support seats (2), characterized in that, Includes the following steps, Step 1: Determine the theoretical coordinate position (X) of the support base (2) according to the drawings. n Y n Z n ): The theoretical coordinate value X of the support base (2) along the length of the hull was determined by sequentially searching through the drawings and documents. n The theoretical coordinate value Y of the support seat (2) in the width direction of the hull. n And the theoretical coordinate value Z of the support (2) in the height direction. n ; Step 2: Calculate the coordinates of the ground center point (6) corresponding to the support base (2) and mark them on the ground; Step 3: Hoist the stabilizer (7) and adjust its position: The stabilizer (7) used to support the main section (1) is sequentially hoisted to the ground marking at the ground center point (6) corresponding to the support base (2). The coordinate positions of the top support points (8) of the stabilizer (7) are measured sequentially. By adjusting the position of the stabilizer (7), the coordinate position of the top support point (8) is aligned with the theoretical coordinate position (X) of the support base (2). n Y n )same; Step 4: Calculate the coordinates of support point (8) in the height direction and adjust the height of the stabilizer (7): By measuring and converting the coordinate value of the support point (8) in the height direction, the height position of the stabilizer (7) is adjusted so that the support point (8) is lower than the theoretical coordinate value Z of the support base (2). n ; Step 5: Hoist the main section (1) and form supports: Hoist the main section (1) to the predetermined installation position, and raise the stabilizer (7) in sequence so that the top support point (8) of the stabilizer (7) is closely supported by the lower end face of the support seat (2) corresponding to the stabilizer (7).

2. The method for supporting a large linear section of the stern as described in claim 1, characterized in that, The specific steps of step two include: setting up a total station on the deck carrying the reference section (3), and using the coordinate position of the center point (4) of the deck carrying the reference section (3) and the position of the ship's ground centerline (5) as a basis, measuring and calculating the coordinate position of the ground center point (6) corresponding to the support seat (2) in sequence by the total station, so that the coordinate value of the ground center point (6) in the length direction of the ship is equal to the theoretical coordinate value X of the support seat (2). n The coordinates of the ground center point (6) in the width direction of the ship are the same, and the coordinates of the support (2) are the same as the theoretical coordinates of the support (2). n The same applies, and then the coordinates of the ground center point (6) corresponding to the support (2) are marked on the ground in sequence.

3. The method for supporting a large stern section according to claim 1, characterized in that, The specific steps of step three include: hoisting the stabilizer (7) used to support the main section (1) to the ground marking at the ground center point (6) corresponding to the support base (2) in sequence; measuring the coordinates of the top support point (8) of the stabilizer (7) in the length direction of the ship and the coordinates in the width direction of the ship in sequence using a total station; and fine-tuning the position of the stabilizer (7) on the ground so that the coordinates of the support point (8) in the length direction of the ship are consistent with the theoretical coordinates of the support base (2). n The coordinates of the support point (8) in the width direction of the hull are the same, and the theoretical coordinates of the support base (2) are the same. n Similarly, the final coordinate position of the support point (8) is (X... n Y n ).

4. The method for supporting a large stern section according to claim 1, characterized in that, The specific steps of step four include: using the coordinates of the center point (4) of the deck of the mounting reference segment (3) in the height direction as a reference, calculating the coordinates of the support point (8) in the height direction by measuring with a total station, and adjusting the height of the stabilizer (7) by adjusting the spiral support at the top of the stabilizer (7), so that the coordinates of the support point (8) in the height direction are greater than the theoretical coordinates of the support base (2) in the height direction. n Low.

5. A method for supporting a large stern section according to claim 1, characterized in that, The specific steps of step five include: adjusting the horizontal state and height of the main section (1) to the predetermined installation position, and sequentially rotating and raising the top spiral support of the stabilizer (7) so that the top support point (8) of the stabilizer (7) is closely supported by the lower end face of the support seat (2) corresponding to the stabilizer (7).

6. A ship, characterized in that, The stern section (1) includes a large linear section (1) with a support base (2), and the section (1) is supported by the support method described in any one of claims 1-5 and assembled with the corresponding mounting reference section (3).

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