A method for turning over large linear sections of a container ship

Abstract

The present invention discloses a method for turning over a large linear segment of a container ship. The method comprises the following steps: an upper trolley and a lower trolley of a gantry crane are connected and fixed to a main hook lifting ring of the large linear segment and a secondary hook lifting ring on an outer plate, and then the trolley is lifted. After the lifting is completed, the lower trolley is connected to the secondary hook lifting ring on a segment platform plate to turn over the large linear segment. The method of the present invention uses a lifting row 3 to connect the upper trolley to the main hook lifting ring of the turning over and lift the large linear segment, and the parallel lifting of the large linear segment is maintained during the lifting process, thereby improving the stability and safety of the turning over process of the large linear segment.

Description

Technical Field

[0001] The invention belongs to the technical field of ship construction, and in particular relates to a method for turning over large linear sections of a container ship. Background Art

[0002] With the development of large-scale container ships, in order to load more boxes, the cargo hold deck is made very wide, but the bow is not significantly widened, resulting in a large change in the line shape of the cargo hold parallel to the center body to the bow. For this type of segmented turnover, the conventional method is to use the gantry crane trolley as the main hook for turnover, but because the line shape is very large, it is necessary to synchronously control the height difference of the two hooks of the trolley during the turnover process, which requires extremely high on-site operation. If the height difference is not properly controlled, the single hook of the trolley may be overweight, the angle between the lifting ring and the wire rope may exceed the maximum allowable deflection angle of the lifting ring, and the weight difference between the two hooks of the trolley may exceed the maximum allowable value, which poses a great safety hazard. Therefore, it is necessary to change the lifting method to ensure safety during the lifting process. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art and to provide a method for turning over a large linear section of a container ship. The method of the present invention uses a lifting row to connect and lift the upper trolley with the turning main hook lifting ring, thereby maintaining the parallel lifting of the large linear section during the lifting process, thereby improving the stability and safety of the turning over process of the large linear section.

[0004] In order to achieve the above invention purpose, the technical solution provided by the present invention is as follows:

[0005] A method for turning over a large linear segment of a container ship, wherein a segment platform plate and an outer plate are provided on the large linear segment, one side of the segment platform plate is an inclined surface, and the other side of the segment platform plate is a horizontal surface; one side of the outer plate is connected to one side of the segment platform plate, and the method specifically comprises the following steps:

[0006] The first step is to install a plurality of turning main hook lifting rings on one side of the inclined surface of the segmented platform plate, wherein the turning main hook lifting rings are evenly distributed on one side of the inclined surface of the segmented platform plate, and the lower ends of the turning main hook lifting rings are vertically welded and fixed to the end surface of one side of the inclined surface of the segmented platform plate, and the turning main hook lifting rings are connected by channel steel;

[0007] The second step is to install multiple auxiliary hook rings on the segmented platform plate and the outer plate after the main hook ring is installed, install multiple auxiliary hook rings on the horizontal surface of the segmented platform plate, and install multiple auxiliary hook rings on the end surface of the outer plate away from the inclined surface of the segmented platform plate;

[0008] The third step is to connect the hooks at the lower end of the hanging row to the main hook rings on one side of the inclined surface of the segmented platform plate, and the rings at the upper end of the hanging row are connected and fixed to the upper trolley in the gantry crane; the lower trolley in the gantry crane is connected to the auxiliary hook ring on the outer plate through a wire rope shackle;

[0009] Step 4: After the connection between the turning auxiliary hook on the outer plate and the lower trolley in the gantry crane is completed, the upper trolley and the lower trolley are lifted synchronously by the gantry crane to drive the large linear segment to lift off the ground. After the large linear segment is lifted, check the connection between the upper trolley and the lower trolley and the large linear segment;

[0010] Step 5: After ensuring that the connection between the upper and lower trolleys and the large linear segment is stable, continue to synchronously lift the large linear segment through the upper and lower trolleys and the lower trolley so that the large linear segment does not contact the ground when turning over;

[0011] Step 6: After the upper and lower cars and the lower trolley are synchronously lifted in large linear sections, the lifting of the upper and lower trolleys is stopped, and the wire rope connecting the lower trolley and the turning-over auxiliary hook lifting ring on the outer plate is lowered. When the wire rope on the lower trolley is not stressed, the wire rope shackle is separated from the turning-over auxiliary hook lifting ring on the outer plate;

[0012] Step 7: After the wire rope shackle is separated from the turning-over auxiliary hook lifting ring on the outer plate, the lower trolley in the gantry crane is moved horizontally along the gantry crane beam to above the turning-over auxiliary hook lifting ring on the segmented platform plate, and the wire rope shackle of the lower trolley is connected and fixed to the turning-over auxiliary hook lifting ring on the segmented platform plate, and the lower trolley is lifted so that the segmented platform plate of the large linear segment is level with the ground;

[0013] In the eighth step, when the segmented platform plate is level with the ground, the upper trolley and the lower trolley are lowered synchronously to make the outer plate in the large linear segment contact with the ground, thereby completing the turning over operation of the large linear segment of the container ship.

[0014] There are a total of 10 turning main hook rings in the first step, and 5 of them are evenly distributed on the inclined surface of the segmented platform plate on both sides of the longitudinal horizontal line of the center of gravity of the large linear segment. The distances from the center of the line connecting the turning main hook rings on both sides of the longitudinal horizontal line of the center of gravity of the large linear segment to the longitudinal horizontal line of the center of gravity of the large linear segment are equal, and the height difference of the turning main hook rings is not more than 20m.

[0015] In the above second step, turning auxiliary hook lifting rings are installed on the segmented platform plate and the outer plate. Four lifting rings are installed on the segmented platform plate. Two turning auxiliary hook lifting rings are installed on the segmented platform plate on both sides of the longitudinal horizontal line of the center of gravity of the large linear segment. There are four turning auxiliary hook lifting rings installed on the end surface of the outer plate at one end away from the inclined surface of the segmented platform plate. Two turning auxiliary hook lifting rings are installed on the outer plate on both sides of the longitudinal horizontal line of the center of gravity of the large linear segment. The distance from the center of the line where the turning auxiliary hook lifting rings on both sides of the longitudinal horizontal line of the center of gravity of the large linear segment are equal to the longitudinal horizontal line of the center of gravity of the large linear segment.

[0016] The hanging row in the above-mentioned third step is in the shape of a rectangular parallelepiped as a whole, and the hanging row includes a fixed pulley, a movable pulley and a hanging row body; lifting rings are arranged on both sides of the upper end of the hanging row body, and a plurality of fixed pulleys are arranged on the end surface of the hanging row body. The hanging row connects the fixed pulley and the movable pulley in sequence through a steel wire rope, and the two ends of the steel wire rope are fixedly connected to the two ends of the hanging row, and the movable pulley is respectively connected to the lifting ring of the turning main hook.

[0017] After the large linear segment in the fourth step is lifted by no less than 300 mm, the connection between the upper and lower trolleys and the large linear segment is checked.

[0018] Before the large linear segment is lifted, the segment platform plate is in contact with the ground. After the large linear segment is lifted, the large linear segment rotates 180°, and the segment platform plate faces upward. When the large linear segment is turned over after being lifted, the height position of the connection between the upper trolley and the turning main hook lifting ring remains unchanged.

[0019] Based on the above technical solution, the present invention's large linear segmented turning method for container ships has achieved the following technical advantages through practical application:

[0020] 1. In a method for turning over a large linear section of a container ship of the present invention, a lifting row is used so that when the upper trolley is lifted, the main hook lifting ring of the turning over of the large linear section is lifted at the same time, thereby ensuring the smooth lifting of the large linear section and improving the safety and stability of the turning over of the large linear section.

[0021] 2. In a method for turning over a large-line segment of a container ship according to the present invention, a lifting row is connected to the turning main hook lifting ring through a movable pulley. During the lifting process of the large-line segment, the movable pulley automatically adjusts its height to maintain a horizontal state when the large-line segment is lifted, thereby improving the lifting stability of the large-line segment.

[0022] 3. In a method for turning over a large linear section of a container ship according to the present invention, the main hook lifting ring and the auxiliary hook lifting ring are evenly distributed along both sides of the longitudinal horizontal line of the center of gravity of the large linear section, so that the large linear section is evenly stressed, the stability of the lifting of the large linear section is improved, and the risk of deformation of the large linear section during lifting is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a schematic diagram of the connection between the lifting row and the turning over main hook ring in a method for turning over a large linear section of a container ship.

[0024] Figure 2 The invention discloses a cross-sectional view of the installation of a main hook lifting ring and a secondary hook lifting ring in a method for turning over a large linear section of a container ship.

[0025] Figure 3 It is a structural diagram of a lifting row in a method for turning over a large linear section of a container ship according to the present invention. DETAILED DESCRIPTION

[0026] 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.

[0027] The present invention relates to a method for turning over a large linear segment of a container ship. A segment platform plate and an outer plate are arranged on the large linear segment 1. One side of the segment platform plate is an inclined surface, and the other side of the segment platform plate is a horizontal surface. One side of the outer plate is connected to one side of the segment platform plate.

[0028] like Figure 1-3 As shown, a method for turning over a container ship in large linear sections, the method specifically comprises the following steps:

[0029] The first step is to install a plurality of turning main hook rings 2 on one side of the inclined surface of the segmented platform plate, the turning main hook rings 2 are evenly distributed on one side of the inclined surface of the segmented platform plate, the lower ends of the turning main hook rings 2 are vertically welded and fixed to the end surface of one side of the inclined surface of the segmented platform plate, and the turning main hook rings 2 are connected by channel steels 5;

[0030] The second step is to install a plurality of turning over auxiliary hook rings 4 on the segmented platform plate and the outer plate after the turning over main hook ring 2 is installed, install a plurality of turning over auxiliary hook rings 4 on one end of the horizontal surface of the segmented platform plate, and install a plurality of turning over auxiliary hook rings 4 on the end surface of the outer plate away from the inclined surface of the segmented platform plate;

[0031] The third step is to connect the hooks at the lower end of the hanging row 3 to the main hook lifting ring 2 on one side of the inclined surface of the segmented platform plate, and the lifting ring at the upper end of the hanging row 3 is connected and fixed to the upper trolley in the gantry crane; the lower trolley in the gantry crane is connected to the auxiliary hook lifting ring 4 on the outer plate through a wire rope shackle; by using the hanging row 3, when the upper trolley is lifted, the main hook lifting ring 2 of the large linear segment 1 is lifted at the same time, which ensures the stable lifting of the large linear segment 1 and improves the safety and stability of the turning of the large linear segment 1;

[0032] Step 4: After the turning over auxiliary hook lifting ring 4 on the outer plate is connected to the lower trolley in the gantry crane, the upper trolley and the lower trolley are synchronously lifted by the gantry crane to drive the large linear segment 1 to lift off the ground. After the large linear segment 1 is lifted, the connection between the upper trolley and the lower trolley and the large linear segment 1 is checked;

[0033] Step 5: After ensuring that the connection between the upper and lower trolleys and the large linear segment 1 is stable, continue to synchronously lift the large linear segment 1 through the upper and lower trolleys and the lower trolley, so that the large linear segment 1 does not contact the ground when turning over;

[0034] Step 6: After the upper and lower cars and the lower trolley synchronously lift the large linear segment 1, stop lifting the upper trolley and the lower trolley, lower the wire rope connecting the lower trolley and the turning over auxiliary hook lifting ring 4 on the outer plate, and separate the wire rope shackle from the turning over auxiliary hook lifting ring 4 on the outer plate when the wire rope on the lower trolley is not stressed;

[0035] Step 7: After the wire rope shackle is separated from the turning-over auxiliary hook lifting ring 4 on the outer plate, the lower trolley in the gantry crane is moved horizontally along the gantry crane beam to above the turning-over auxiliary hook lifting ring 4 on the segmented platform plate, and the wire rope shackle of the lower trolley is connected and fixed to the turning-over auxiliary hook lifting ring 4 on the segmented platform plate, and the lower trolley is lifted so that the segmented platform plate of the large linear segment 1 is level with the ground;

[0036] In the eighth step, when the segmented platform plate is level with the ground, the upper trolley and the lower trolley are lowered synchronously to make the outer plate in the large linear segment 1 contact with the ground, thereby completing the turning over operation of the large linear segment 1 of the container ship.

[0037] There are a total of 10 turning main hook rings 2 in the first step, and 5 of the turning main hook rings 2 are evenly distributed on the inclined surface of the segmented platform plate on both sides of the longitudinal horizontal line of the center of gravity of the large linear segment 1. The distances from the center of the connecting line where the turning main hook rings 2 on both sides of the longitudinal horizontal line of the center of gravity of the large linear segment 1 are equal to the longitudinal horizontal line of the center of gravity of the large linear segment 1, and the height difference of the turning main hook ring 2 is not more than 20m.

[0038] In the above second step, turning auxiliary hook lifting rings 4 are installed on the segmented platform plate and the outer plate. Four lifting rings are installed on the segmented platform plate. Two turning auxiliary hook lifting rings 4 on the segmented platform plate are installed on both sides of the longitudinal horizontal line of the center of gravity of the large linear segment 1. There are four turning auxiliary hook lifting rings 4 installed on the end surface of the outer plate away from the inclined surface of the segmented platform plate. Two turning auxiliary hook lifting rings 4 on the outer plate are installed on both sides of the longitudinal horizontal line of the center of gravity of the large linear segment 1. The center of the connecting line where the turning auxiliary hook lifting rings 4 on both sides of the longitudinal horizontal line of the center of gravity of the large linear segment 1 are at an equal distance from the longitudinal horizontal line of the center of gravity of the large linear segment 1; the turning main hook lifting ring 2 and the turning auxiliary hook lifting ring 4 are evenly distributed along both sides of the longitudinal horizontal line of the center of gravity of the large linear segment 1, so that the large linear segment 1 is evenly stressed, which improves the stability of the lifting of the large linear segment 1 and avoids the risk of deformation of the large linear segment 1 during lifting.

[0039] The hanging row 3 in the above-mentioned third step is in the shape of a rectangular parallelepiped as a whole, and the hanging row 3 includes a fixed pulley 32, a movable pulley 33 and a hanging row body 31; the hanging row body 31 is provided with lifting rings on both sides of the upper end, and a plurality of fixed pulleys 32 are provided on the end surface of the hanging row body 31. The hanging row 3 connects the fixed pulley 32 and the movable pulley 33 in sequence through a steel wire rope, and the two ends of the steel wire rope are fixedly connected to the two ends of the hanging row 3, and the movable pulley 33 is respectively connected to the turning main hook lifting ring 2; the hanging row 3 is connected to the turning main hook lifting ring through the movable pulley 33, and during the lifting process of the large linear segment 1, the movable pulley 33 automatically adjusts the height to keep the large linear segment 1 in a horizontal state when it is lifted, thereby improving the lifting stability of the large linear segment 1.

[0040] After the large linear segment 1 in the fourth step is lifted by no less than 300 mm, the connection between the upper trolley, the lower trolley and the large linear segment 1 is checked.

[0041] Before the large linear segment 1 is lifted, the segment platform plate is in contact with the ground. After the large linear segment 1 is lifted, the large linear segment 1 rotates 180°, and the segment platform plate faces upward. When the large linear segment 1 is turned over after being lifted, the height position of the connection between the upper trolley and the turning main hook lifting ring 2 remains unchanged.

[0042] 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 turning over a large linear segment of a container ship, wherein a segment platform plate and an outer plate are arranged on the large linear segment (1), one side of the segment platform plate is an inclined surface, and the other side of the segment platform plate is a horizontal surface; one side of the outer plate is connected to one side of the segment platform plate, characterized in that: The method specifically comprises the following steps: The first step is to install a plurality of turning main hook lifting rings (2) on one side of the inclined surface of the segmented platform plate, wherein the turning main hook lifting rings (2) are evenly distributed on one side of the inclined surface of the segmented platform plate, and the lower ends of the turning main hook lifting rings (2) are vertically welded and fixed to the end surface of the inclined surface of the segmented platform plate, and the turning main hook lifting rings (2) are connected by channel steels (5); The second step is to install a plurality of turning auxiliary hook lifting rings (4) on the segmented platform plate and the outer plate after the turning main hook lifting ring (2) is installed, install a plurality of turning auxiliary hook lifting rings (4) on one end of the horizontal surface of the segmented platform plate, and install a plurality of turning auxiliary hook lifting rings (4) on the end surface of the outer plate away from the inclined surface of the segmented platform plate; The third step is to connect the hooks at the lower end of the hanging row (3) to the main hook lifting rings (2) on one side of the inclined surface of the segmented platform plate, and the lifting rings at the upper end of the hanging row (3) are connected and fixed to the upper trolley in the gantry crane; the lower trolley in the gantry crane is connected to the auxiliary hook lifting ring (4) on the outer plate through a wire rope shackle; Step 4: After the turning auxiliary hook lifting ring (4) on the outer plate is connected to the lower trolley in the gantry crane, the upper trolley and the lower trolley are synchronously lifted by the gantry crane to drive the large linear segment (1) to lift off the ground. After the large linear segment (1) is lifted, the connection between the upper trolley and the lower trolley and the large linear segment (1) is checked; Step 5: After ensuring that the connection between the upper trolley and the lower trolley and the large linear segment (1) is stable, continue to synchronously lift the large linear segment (1) by using the upper and lower trolleys and the lower trolley, so that the large linear segment (1) does not contact the ground when turning over; Step 6: After the upper and lower cars and the lower trolley are synchronously lifted in the large linear segment (1), the lifting of the upper trolley and the lower trolley is stopped, and the steel wire rope connecting the lower trolley and the turning-over auxiliary hook lifting ring (4) on the outer plate is lowered. When the steel wire rope on the lower trolley is not stressed, the steel wire rope shackle is separated from the turning-over auxiliary hook lifting ring (4) on the outer plate; Step 7: After the wire rope shackle is separated from the turning-over auxiliary hook lifting ring (4) on the outer plate, the lower trolley in the gantry crane is moved horizontally along the gantry crane beam to above the turning-over auxiliary hook lifting ring (4) on the segmented platform plate, and the wire rope shackle of the lower trolley is connected and fixed to the turning-over auxiliary hook lifting ring (4) on the segmented platform plate, and the lower trolley is lifted so that the segmented platform plate of the large linear segment (1) is level with the ground; In the eighth step, when the segmented platform plate is level with the ground, the upper trolley and the lower trolley are lowered synchronously, so that the outer plate in the large linear segment (1) contacts the ground, and the turning operation of the large linear segment (1) of the container ship is completed.

2. A method for turning over a large linear section of a container ship according to claim 1, characterized in that: There are a total of 10 turning main hook rings (2) in the first step, and 5 of the turning main hook rings (2) are evenly distributed on the inclined surface of the segment platform plate on both sides of the longitudinal horizontal line of the center of gravity of the large linear segment (1). The distances from the center of the line connecting the turning main hook rings (2) on both sides of the longitudinal horizontal line of the center of gravity of the large linear segment (1) to the longitudinal horizontal line of the center of gravity of the large linear segment (1) are equal, and the height difference of the turning main hook rings (2) is not more than 20m.

3. A method for turning over a large linear section of a container ship according to claim 1, characterized in that: In the second step, turning auxiliary hook lifting rings (4) are installed on the segmented platform plate and the outer plate. Four lifting rings are installed on the segmented platform plate. Two turning auxiliary hook lifting rings (4) are installed on the segmented platform plate on both sides of the longitudinal horizontal line of the center of gravity of the large linear segment (1). There are four turning auxiliary hook lifting rings (4) installed on the end surface of the outer plate at one end away from the inclined surface of the segmented platform plate. Two turning auxiliary hook lifting rings (4) are installed on the outer plate on both sides of the longitudinal horizontal line of the center of gravity of the large linear segment (1). The distance from the center of the connecting line where the turning auxiliary hook lifting rings (4) on both sides of the longitudinal horizontal line of the center of gravity of the large linear segment (1) are located to the longitudinal horizontal line of the center of gravity of the large linear segment (1) is equal.

4. A method for turning over a large linear section of a container ship according to claim 1, characterized in that: The hanging row (3) in the third step is in the shape of a rectangular parallelepiped as a whole, and the hanging row (3) comprises a fixed pulley (32), a movable pulley (33) and a hanging row body (31); the upper ends of the hanging row body (31) are provided with lifting rings on both sides, and the end surface of the hanging row body (31) is provided with a plurality of fixed pulleys (32); the hanging row (3) connects the fixed pulley (32) and the movable pulley (33) in sequence through a steel wire rope, and the two ends of the steel wire rope are fixedly connected to the two ends of the hanging row (3), and the movable pulley (33) is respectively connected to the turning main hook lifting ring (2).

5. A method for turning over a large linear section of a container ship according to claim 1, characterized in that: After the large linear segment (1) in the fourth step is lifted by no less than 300 mm, the connection between the upper trolley and the lower trolley and the large linear segment (1) is checked.

6. A method for turning over a large linear section of a container ship according to claim 1, characterized in that: Before the large linear segment (1) is lifted, the segment platform plate is in contact with the ground. After the large linear segment (1) is lifted, the large linear segment (1) rotates 180°, and the segment platform plate faces upward. When the large linear segment (1) is lifted and turned over, the height position of the connection between the upper trolley and the turning main hook lifting ring (2) remains unchanged.

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