A method for erecting scaffolding in linear areas of ship outer plates

Abstract

The present invention relates to a method for erecting scaffolding in a ship outer plate linear area, wherein the method selects different scaffolding eye plates according to the angle between the ship outer plate line and the plumb line to erect a scaffolding below the ship block or segment seam line for welding at the seam. The method of the present invention reduces scaffolding materials, reduces production costs, ensures the level of the erection platform, facilitates construction operations, and installs protective railings on the scaffolding to improve construction safety.

Description

Technical Field

[0001] The invention relates to the technical field of ship construction, and in particular to a method for erecting scaffolding in a linear area of ​​a ship outer plate. Background Art

[0002] During the shipbuilding process, it is often necessary to carry out construction on the outer plate area, especially at the joints between sections and blocks, where welding operations are required.

[0003] Patent No. CN109319040A discloses a method for erecting scaffolding in the bilge area of ​​a ship. The method is simple and convenient to operate. A special scaffolding eye plate and a first clamp support are installed on the outer plate, the eye plate support is fixed on the scaffolding eye plate, a vertical steel pipe is fixed on the first clamp support, and a first horizontal steel pipe is fixed between the vertical steel pipe and the eye plate support, thereby forming a load-bearing frame of the scaffolding. Then, scaffolding boards and railings are installed on the load-bearing frame to erect a complete scaffolding. The invention is suitable for erecting scaffolding in the bilge area of ​​a ship, but not in other outer plate areas of a ship.

[0004] In order to realize the construction in this area, the conventional practice is to set up ground scaffolding. However, the setting up of ground scaffolding has certain limitations. First, more materials are used for setting up, and second, there are certain safety hazards in setting up super-high ground scaffolding. Summary of the invention

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides a method for scaffolding erection in the linear area of ​​the outer plate of a ship. The method of the present invention selects different scaffolding eye plates for scaffolding erection according to the angle between the linear area of ​​the outer plate of the ship and the plumb line, thereby reducing the scaffolding erection materials, ensuring the level of the erection platform, and facilitating construction operations.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A method for erecting scaffolding in a linear area of ​​a ship's outer plate, wherein the angles of the line of the ship's outer plate at different heights and positions on the ship with respect to the vertical direction are different, and the method specifically comprises the following steps:

[0008] The first step is to prepare a scaffolding eye plate device for the linear area of ​​the outer plate of the ship, the device includes a first eye plate, a second eye plate, a third eye plate, a first supporting cross bar and a second supporting cross bar, the first eye plate is in the shape of a rectangular parallelepiped as a whole, and two circular through holes are opened on the end face of the first eye plate, and the circular through holes on the first eye plate are close to one side of the end face of the first eye plate; the second eye plate is in the shape of a right-angled trapezoid as a whole, and two circular through holes are opened on the end face of the second eye plate, and the circular through holes on the second eye plate are close to one side of the right-angled side of the end face of the second eye plate; the third eye plate is in the shape of a right-angled trapezoid as a whole, and two circular through holes are opened in the middle part of the end face of the third eye plate; the first supporting cross bar is in the shape of a rectangular parallelepiped as a whole, and four circular through holes are opened on one side of the end face of the first supporting cross bar, and two circular through holes are opened on the other side of the end face of the first supporting cross bar, and a connecting piece is welded at the lower end of the other side of the end face of the first supporting cross bar, and the end face of the connecting piece has two circular through holes, and the circular through holes opened on the end face of the first supporting cross bar are on the same straight line; the second supporting cross bar has the same structure as the first supporting cross bar;

[0009] The second step is to measure the angle between the outer plate line of the ship to be constructed and the plumb line, and select eye plates according to the angle range to weld and build scaffolding on the outer plate of the ship;

[0010] The third step is, when the measured angle between the outer plate line of the ship and the plumb line is less than 10°, select two first eye plates and install them respectively between 800mm-1300mm below the seam of the outer plate of the ship, the two first eye plates are at the same height, and the horizontal distance between the two first eye plates during installation is 1900mm-2400mm; connect one end of the two second support cross bars with the connector to the first eye plates through circular through holes respectively; make the two second support cross bars parallel to the ground; lay scaffolding boards on the two second support cross bars, and connect and fix the scaffolding boards to the circular through holes of the second support cross bars through steel wire ropes; install a guardrail on the side of the second support cross bar away from the outer plate of the ship;

[0011] Step 4: When the measured angle between the ship's outer plate line and the plumb line is greater than or equal to 10° and less than or equal to 29°, select two second eye plates and install them respectively between 800mm-1300mm below the seam of the ship's outer plate, and the two second eye plates are at the same height; connect the second support cross bar with one end of the connector to the second eye plate through a circular through hole; make the second support cross bar parallel to the ground; lay scaffolding boards on the two second support cross bars, and connect and fix the scaffolding boards to the circular through holes of the second support cross bars through steel wire ropes; install a guardrail on the side of the second support cross bar away from the ship's outer plate;

[0012] The fifth step, when the measured angle between the outer plate line of the ship and the plumb line is greater than 29° and less than 43°, select two second eye plates and install them below the seam of the outer plate of the ship respectively, the distance between the two second eye plates and the seam of the outer plate of the ship is not more than 300mm, the two second eye plates are at the same height, and the horizontal distance between the two second eye plates during installation is 1900mm-2400mm; connect the end of the first support cross bar connected with the connector to the second eye plate through a circular through hole, so that the first support cross bar is perpendicular to the ground; connect the end of the second support cross bar connected with the connector to the first support cross bar through a circular through hole, so that the second support cross bar is parallel to the ground, lay scaffolding boards on the two second support cross bars, and the scaffolding boards are connected and fixed to the circular through holes of the second support cross bars by steel wire ropes; install a guardrail on the side of the second support cross bar away from the outer plate of the ship;

[0013] Step 6. When the measured angle between the outer plate line of the ship and the plumb line is greater than or equal to 43°, select two third eye plates and install them below the seam of the outer plate of the ship. The distance between the two third eye plates and the seam of the outer plate of the ship is not more than 300mm. The two third eye plates are at the same height. The horizontal distance between the two third eye plates during installation is 1900mm-2400mm; connect the end of the first support cross bar connected with the connector to the third eye plate through a circular through hole, so that the first support cross bar is perpendicular to the ground; connect the end of the second support cross bar connected with the connector to the first support cross bar through a circular through hole, so that the second support cross bar is parallel to the ground, lay scaffolding boards on the two second support cross bars, and the scaffolding boards are connected and fixed to the circular through holes of the second support cross bars by steel wire ropes; install a guardrail on the side of the second support cross bar away from the outer plate of the ship;

[0014] Step 7: After the scaffolding is completed according to the angle between the ship's outer plate line and the plumb line, welding is performed on the scaffolding board at the seams of the ship's outer plate;

[0015] The eighth step is to dismantle the scaffolding erected on the ship's outer plate joints after the welding construction is completed to complete the welding construction on the ship's outer plate joints.

[0016] The length of the first supporting cross bar in the above first step is 400mm-850mm, and the length of the second supporting cross bar is 850mm-1300mm.

[0017] When the first eye plate in the third step is installed on the outer plate of the ship, the first eye plate is cut according to the angle between the outer plate line of the ship and the plumb line, and the side where the first eye plate is connected to the outer plate of the ship is cut. After cutting, the first eye plate is welded to the outer plate of the ship so that the lower end surface of the first eye plate is parallel to the ground.

[0018] When the second eye plate in the fourth step is installed on the outer plate of the ship, the second eye plate is cut according to the angle between the outer plate line of the ship and the plumb line, and the side where the second eye plate is connected to the outer plate of the ship is cut. After cutting, the second eye plate is welded to the outer plate of the ship so that the lower end surface of the second eye plate is parallel to the ground.

[0019] When the second eye plate in the fifth step is installed on the outer plate of the ship, the second eye plate is cut according to the angle between the outer plate line of the ship and the plumb line, and the side where the second eye plate is connected to the outer plate of the ship is cut. After cutting, the second eye plate is welded to the outer plate of the ship so that the lower end surface of the second eye plate is parallel to the ground.

[0020] When the third eye plate in the sixth step is installed on the outer plate of the ship, the third eye plate is cut according to the angle between the outer plate line of the ship and the plumb line, and the side where the third eye plate is connected to the outer plate of the ship is cut. After cutting, the third eye plate is welded to the outer plate of the ship so that the lower end surface of the third eye plate is parallel to the ground.

[0021] Based on the above scheme, the method of the present invention has achieved the following positive and beneficial effects through practice:

[0022] 1. The present invention reduces scaffolding materials by selecting different scaffolding eye plates for scaffolding according to the angle between the ship's outer plate line and the plumb line, ensures the level of the scaffolding platform, and facilitates construction operations. At the same time, compared with the prior art, this method is widely used and is suitable for outer plates in all ship linear areas.

[0023] 2. The present invention improves construction safety by arranging protective railings on the scaffolding. The method is simple to operate and easy to implement, and can effectively improve efficiency.

[0024] 3. After being installed on the ship sections and the main section, the scaffolding in the present invention can move along with the sections and the main section and can be pre-installed in advance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of a first eye plate in a method for erecting scaffolding in a linear area of ​​a ship's outer plate according to the present invention.

[0026] Figure 2 It is a schematic diagram of a second eye plate in a method for erecting scaffolding in a linear area of ​​a ship's outer plate according to the present invention.

[0027] Figure 3 It is a schematic diagram of a third eye plate in a method for erecting scaffolding in a linear area of ​​a ship outer plate according to the present invention.

[0028] Figure 4 It is a schematic diagram of the first cross bar in a method for erecting scaffolding in a linear area of ​​a ship's outer plate according to the present invention.

[0029] Figure 5 It is a schematic diagram of a second crossbar in a method for erecting scaffolding in a linear area of ​​a ship's outer plate according to the present invention.

[0030] Figure 6 The present invention is a schematic diagram of scaffolding eyeboard erection when the angle between the outer plate line and the plumb line is less than 10 degrees in a method for erecting scaffolding in a ship outer plate linear area.

[0031] Figure 7 It is a schematic diagram of scaffolding eyeboard erection when the angle between the outer plate line and the plumb line is greater than or equal to 10° and less than or equal to 29° in a method for erecting scaffolding in a ship outer plate linear area of ​​the present invention.

[0032] Figure 8 The present invention is a schematic diagram of scaffolding eyeboard erection when the angle between the outer plate line and the plumb line is greater than 29° and less than 43° in a method for erecting scaffolding in a ship outer plate linear area.

[0033] Fig. 9 The present invention is a schematic diagram of scaffolding eyeboard erection when the angle between the outer plate line and the plumb line is greater than 43° in a method for erecting scaffolding in a ship outer plate linear area. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific examples shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0035] Combination Figure 1-Figure 9 The present embodiment is described in detail. The present invention relates to a method for erecting scaffolding in a linear area of ​​a ship's outer plate. The angles between the linear area of ​​the ship's outer plate and the vertical direction are different at different heights and positions of the ship. The method specifically comprises the following steps:

[0036] The first step is to prepare a scaffolding eye plate device for the linear area of ​​the outer plate of the ship, the device includes a first eye plate 1, a second eye plate 2, a third eye plate 3, a first support cross bar 4 and a second support cross bar 5, the first eye plate 1 is in the shape of a rectangular parallelepiped as a whole, and two circular through holes are opened on the end face of the first eye plate 1, and the circular through holes on the first eye plate 1 are close to one side of the end face of the first eye plate 1; the second eye plate 2 is in the shape of a right-angled trapezoid as a whole, and two circular through holes are opened on the end face of the second eye plate 2, and the circular through holes on the second eye plate 2 are close to one side of the right-angled side of the end face of the second eye plate 2; The third eye plate 3 is in the shape of a right-angled trapezoid as a whole, and two circular through holes are opened in the middle of the end face of the third eye plate 3; the first support cross bar 4 is in the shape of a rectangular parallelepiped as a whole, and four circular through holes are opened on one side of the end face of the first support cross bar 4, and two circular through holes are opened on the other side of the end face of the first support cross bar 4, and a connecting piece is welded at the lower end of the other side of the end face of the first support cross bar 4, and two circular through holes are opened on the end face of the connecting piece, and the circular through holes opened on the end face of the first support cross bar 4 are on the same straight line; the second support cross bar 5 has the same structure as the first support cross bar 4; the first eye plate 1 is as Figure 1 As shown, the second eye plate 2 is as shown Figure 2 As shown, the third eye plate 3 is as Figure 3 As shown, the first support crossbar 4 is as shown in Figure 4 As shown, the second support crossbar 5 is as shown in Figure 5 As shown;

[0037] The second step is to measure the angle between the ship's outer plate line 6 and the plumb line 7 at the location to be constructed, and select eye plates according to the angle range to weld and build scaffolds on the ship's outer plate;

[0038] The third step, when the measured angle between the ship's outer plate line 6 and the plumb line 7 is less than 10°, select two first eye plates 1 and install them respectively between 800mm-1300mm below the ship's outer plate joint, the two first eye plates 1 are at the same height, and the horizontal distance between the two first eye plates 1 during installation is 1900mm-2400mm; connect the two second support cross bars 5 with one end of the connector respectively connected to the first eye plate 1 through a circular through hole; make the two second support cross bars 5 parallel to the ground; lay scaffolding boards at the other ends of the two second support cross bars 5, and the scaffolding boards are connected and fixed to the circular through holes of the second support cross bars 5 by steel wire ropes; install a guardrail on the side of the second support cross bar 5 away from the ship's outer plate; the scaffolding is set up as follows when the angle between the ship's outer plate line 6 and the plumb line 7 is less than 10° Figure 6 As shown, installing a guardrail on one side of the scaffolding board improves the safety during construction; the horizontal distance between the two first eye boards 1 during installation ensures that the scaffolding space is convenient for construction and improves construction efficiency;

[0039] The fourth step, when the measured angle between the ship's outer plate line 6 and the plumb line 7 is greater than or equal to 10° and less than or equal to 29°, select two second eye plates 2 and install them respectively between 800mm-1300mm below the seam of the ship's outer plate, and the two second eye plates 2 are at the same height; connect the second support cross bar 5 with one end of the connector to the second eye plate 2 through a circular through hole; make the second support cross bar 5 parallel to the ground; lay scaffolding boards on the two second support cross bars 5, and the scaffolding boards are connected and fixed to the circular through holes of the second support cross bars 5 by steel wire ropes; install a guardrail on the side of the second support cross bar 5 away from the ship's outer plate; the scaffolding is set up as follows when the angle between the ship's outer plate line 6 and the plumb line 7 is greater than or equal to 10° and less than or equal to 29° Figure 7 As shown, installing a guardrail on one side of the scaffolding board improves the safety during construction; the horizontal distance between the two second eye plates 2 during installation ensures that the scaffolding space is convenient for construction and improves construction efficiency;

[0040] Step 5: When the measured angle between the ship's outer plate line 6 and the plumb line 7 is greater than 29° and less than 43°, select two second eye plates 2 and install them below the ship's outer plate joint. The distance between the two second eye plates 2 and the ship's outer plate joint is no more than 300mm. The two second eye plates 2 are at the same height. The horizontal distance between the two second eye plates 2 during installation is 1900mm-2400mm. Connect one end of the first support crossbar 4 with the connector to the second eye plate 2 through the circular through hole. The first support cross bar 4 is connected to the ground, so that the first support cross bar 4 is perpendicular to the ground; the end of the second support cross bar 5 connected with the connecting piece is connected to the first support cross bar through the circular through hole, so that the second support cross bar 5 is parallel to the ground, and the scaffolding board is laid on the two second support cross bars 5, and the scaffolding board is connected and fixed to the circular through hole of the second support cross bar 5 by a wire rope; a guardrail is installed on the side of the second support cross bar 5 away from the outer plate of the ship; the scaffolding is set up as follows when the angle between the outer plate line 6 of the ship and the plumb line 7 is greater than 29° and less than 43° Figure 8 As shown; installing a guardrail on one side of the scaffolding board improves the safety during construction; the horizontal distance between the two second eye plates 2 during installation ensures that the scaffolding space is convenient for construction and improves construction efficiency;

[0041] The sixth step, when the measured angle between the ship's outer plate line 6 and the plumb line 7 is greater than or equal to 43°, select two third eye plates 3 and install them below the ship's outer plate joint, the distance between the two third eye plates 3 and the ship's outer plate joint is not greater than 300mm, the two third eye plates 3 are at the same height, and the horizontal distance between the two third eye plates 3 during installation is 1900mm-2400mm; connect the first support cross bar 4 with one end of the connector to the third eye plate 3 through a circular through hole, so that the first support cross bar 4 is perpendicular to the ground; connect the second support cross bar 5 with one end of the connector to the first support cross bar 4 through a circular through hole, so that the second support cross bar 5 is parallel to the ground, lay scaffolding boards on the two second support cross bars 5, and the scaffolding boards are connected and fixed to the circular through holes of the second support cross bars 5 by steel wire ropes; install a guardrail on the side of the second support cross bar 5 away from the ship's outer plate; the scaffolding is set up as follows when the angle between the ship's outer plate line 6 and the plumb line 7 is greater than or equal to 43° Fig. 9 As shown, installing a guardrail on one side of the scaffolding board improves the safety during construction; the horizontal distance between the two third eye plates 3 during installation ensures that the scaffolding space is convenient for construction and improves construction efficiency;

[0042] Step 7: After the scaffolding is completed according to the angle between the ship's outer plate line 6 and the plumb line 7, welding is performed on the scaffolding board at the seam of the ship's outer plate;

[0043] The eighth step is to dismantle the scaffolding erected on the ship's outer plate joints after the welding construction is completed to complete the welding construction on the ship's outer plate joints.

[0044] The length of the first support crossbar 4 in the first step is less than 850 mm, and the length of the second support crossbar 5 is less than 1300 mm; Figure 4 As shown, the second support crossbar 5 is as shown in Figure 5 As shown, the length of the first supporting cross bar 4 determines the vertical distance between the scaffolding and the joint line, which is convenient for construction workers; the length of the second supporting cross bar 5 ensures the length of the scaffolding, ensures the construction space, and improves the construction efficiency.

[0045] When the first eye plate 1 in the third step is installed on the outer plate of the ship, the first eye plate is cut according to the angle between the outer plate line 6 and the plumb line 7, and the side where the first eye plate 1 is connected to the outer plate of the ship is cut. After cutting, the first eye plate 1 is welded to the outer plate of the ship so that the lower end surface of the first eye plate 1 is parallel to the ground; the first eye plate 1 is as shown in FIG. Figure 1 As shown, by pre-processing the cutting of the first eye plate 1, when the cut first eye plate 1 is welded to the outer plate of the ship, the lower end surface of the first eye plate 1 remains parallel to the ground, ensuring that the subsequent second supporting cross bar 5 remains parallel to the ground during installation, thereby improving the stability of the scaffolding and facilitating construction.

[0046] When the second eye plate 2 in the fourth step is installed on the outer plate of the ship, the second eye plate 2 is cut according to the angle between the outer plate line 6 and the plumb line 7, and the side where the second eye plate 2 is connected to the outer plate of the ship is cut. After cutting, the second eye plate 2 is welded to the outer plate of the ship so that the lower end surface of the second eye plate 2 is parallel to the ground; the second eye plate 2 is as shown in FIG. Figure 2 As shown, by pre-processing the cutting of the second eye plate 2, when the cut second eye plate 2 is welded to the outer plate of the ship, the lower end surface of the second eye plate 2 remains parallel to the ground, ensuring that the subsequent second supporting cross bar 5 remains parallel to the ground during installation, thereby improving the stability of the scaffolding and facilitating construction.

[0047] When the second eye plate 2 in the fifth step is installed on the outer plate of the ship, the second eye plate 2 is cut according to the angle between the outer plate line 6 and the plumb line 7, and the side where the second eye plate 2 is connected to the outer plate of the ship is cut. After cutting, the second eye plate 2 is welded to the outer plate of the ship so that the lower end surface of the second eye plate 2 is parallel to the ground.

[0048] When the third eye plate 3 in the sixth step is installed on the outer plate of the ship, the third eye plate 3 is cut according to the angle between the outer plate line 6 and the plumb line 7, and the side where the third eye plate 3 is connected to the outer plate of the ship is cut. After cutting, the third eye plate 3 is welded to the outer plate of the ship so that the lower end surface of the third eye plate 3 is parallel to the ground; the third eye plate 3 is as shown in FIG. Figure 3 As shown, by pre-processing the cutting of the third eye plate 3, when the cut third eye plate 3 is welded to the outer plate of the ship, the lower end surface of the third eye plate 3 remains parallel to the ground, ensuring that the subsequent second supporting cross bar 5 remains parallel to the ground during installation, thereby improving the stability of the scaffolding and facilitating construction.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A method for erecting scaffolding in the linear area of ​​a ship's outer plate, wherein the angles of the ship's outer plate's linear area with the vertical direction are different at different heights and positions of the ship, and the method is characterized in that: The method specifically comprises the following steps: The first step is to prepare a scaffolding eye plate device for the linear area of ​​the outer plate of the ship, the device includes a first eye plate, a second eye plate, a third eye plate, a first supporting cross bar and a second supporting cross bar, the first eye plate is in the shape of a rectangular parallelepiped as a whole, and two circular through holes are opened on the end face of the first eye plate, and the circular through holes on the first eye plate are close to one side of the end face of the first eye plate; the second eye plate is in the shape of a right-angled trapezoid as a whole, and two circular through holes are opened on the end face of the second eye plate, and the circular through holes on the second eye plate are close to one side of the right-angled side of the end face of the second eye plate; the third eye plate is in the shape of a right-angled trapezoid as a whole, and two circular through holes are opened in the middle part of the end face of the third eye plate; the first supporting cross bar is in the shape of a rectangular parallelepiped as a whole, and four circular through holes are opened on one side of the end face of the first supporting cross bar, and two circular through holes are opened on the other side of the end face of the first supporting cross bar, a connecting piece is welded at the lower end of the other side of the end face of the first supporting cross bar, and the end face of the connecting piece has two circular through holes, and the circular through holes opened on the end face of the first supporting cross bar are on the same straight line; the second supporting cross bar has the same structure as the first supporting cross bar; The second step is to measure the angle between the outer plate line of the ship to be constructed and the plumb line, and select eye plates according to the angle range to weld and build scaffolding on the outer plate of the ship; The third step is, when the measured angle between the outer plate line of the ship and the plumb line is less than 10°, select two first eye plates and install them respectively between 800mm-1300mm below the seam of the outer plate of the ship, the two first eye plates are at the same height, and the horizontal distance between the two first eye plates during installation is 1900mm-2400mm; connect one end of the two second support cross bars with the connector to the first eye plates through circular through holes respectively; make the two second support cross bars parallel to the ground; lay scaffolding boards on the two second support cross bars, and connect and fix the scaffolding boards to the circular through holes of the second support cross bars through steel wire ropes; install a guardrail on the side of the second support cross bar away from the outer plate of the ship; Step 4: When the measured angle between the ship's outer plate line and the plumb line is greater than or equal to 10° and less than or equal to 29°, select two second eye plates and install them respectively between 800mm-1300mm below the seam of the ship's outer plate, and the two second eye plates are at the same height; connect the second support cross bar with one end of the connector to the second eye plate through a circular through hole; make the second support cross bar parallel to the ground; lay scaffolding boards on the two second support cross bars, and connect and fix the scaffolding boards to the circular through holes of the second support cross bars through steel wire ropes; install a guardrail on the side of the second support cross bar away from the ship's outer plate; The fifth step, when the measured angle between the outer plate line of the ship and the plumb line is greater than 29° and less than 43°, select two second eye plates and install them below the seam of the outer plate of the ship respectively, the distance between the two second eye plates and the seam of the outer plate of the ship is not more than 300mm, the two second eye plates are at the same height, and the horizontal distance between the two second eye plates during installation is 1900mm-2400mm; connect the end of the first support cross bar connected with the connector to the second eye plate through a circular through hole, so that the first support cross bar is perpendicular to the ground; connect the end of the second support cross bar connected with the connector to the first support cross bar through a circular through hole, so that the second support cross bar is parallel to the ground, lay scaffolding boards on the two second support cross bars, and the scaffolding boards are connected and fixed to the circular through holes of the second support cross bars by steel wire ropes; install a guardrail on the side of the second support cross bar away from the outer plate of the ship; Step 6. When the measured angle between the outer plate line of the ship and the plumb line is greater than or equal to 43°, select two third eye plates and install them below the seam of the outer plate of the ship. The distance between the two third eye plates and the seam of the outer plate of the ship is not more than 300mm. The two third eye plates are at the same height. The horizontal distance between the two third eye plates during installation is 1900mm-2400mm; connect the end of the first support cross bar connected with the connector to the third eye plate through a circular through hole, so that the first support cross bar is perpendicular to the ground; connect the end of the second support cross bar connected with the connector to the first support cross bar through a circular through hole, so that the second support cross bar is parallel to the ground, lay scaffolding boards on the two second support cross bars, and the scaffolding boards are connected and fixed to the circular through holes of the second support cross bars by steel wire ropes; install a guardrail on the side of the second support cross bar away from the outer plate of the ship; Step 7: After the scaffolding is completed according to the angle between the ship's outer plate line and the plumb line, welding is performed on the scaffolding board at the seams of the ship's outer plate; The eighth step is to dismantle the scaffolding erected on the ship's outer plate joints after the welding construction is completed to complete the welding construction on the ship's outer plate joints.

2. A method for erecting scaffolding in a linear area of ​​a ship's outer plate according to claim 1, characterized in that: The length of the first supporting cross bar in the first step is 400mm-850mm, and the length of the second supporting cross bar is 850mm-1300mm.

3. A method for erecting scaffolding in a linear area of ​​a ship's outer plate according to claim 1, characterized in that: When the first eye plate in the third step is installed on the outer plate of the ship, the first eye plate is cut according to the angle between the line shape of the outer plate of the ship and the plumb line, and the side where the first eye plate is connected to the outer plate of the ship is cut. After cutting, the first eye plate is welded to the outer plate of the ship so that the lower end surface of the first eye plate is parallel to the ground.

4. A method for erecting scaffolding in a linear area of ​​a ship's outer plate according to claim 1, characterized in that: When the second eye plate in the fourth step is installed on the outer plate of the ship, the second eye plate is cut according to the angle between the outer plate line of the ship and the plumb line, and the side where the second eye plate is connected to the outer plate of the ship is cut. After cutting, the second eye plate is welded to the outer plate of the ship so that the lower end surface of the second eye plate is parallel to the ground.

5. A method for erecting scaffolding in a linear area of ​​a ship's outer plate according to claim 1, characterized in that: When the second eye plate in the fifth step is installed on the outer plate of the ship, the second eye plate is cut according to the angle between the outer plate line of the ship and the plumb line, and the side where the second eye plate is connected to the outer plate of the ship is cut. After cutting, the second eye plate is welded to the outer plate of the ship so that the lower end surface of the second eye plate is parallel to the ground.

6. A method for erecting scaffolding in a linear area of ​​a ship's outer plate according to claim 1, characterized in that: When the third eye plate in the sixth step is installed on the outer plate of the ship, the third eye plate is cut according to the angle between the outer plate line of the ship and the plumb line, and the side where the third eye plate is connected to the outer plate of the ship is cut. After cutting, the third eye plate is welded to the outer plate of the ship so that the lower end surface of the third eye plate is parallel to the ground.

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