Installation method of single point system conveyor for self-unloading ship

Abstract

This invention relates to an installation method for a single-point system conveyor on a self-unloading ship, specifically including the following steps: S1: Determining the installation centerline of the single-point system conveyor: The installation centerline of the single-point system conveyor is determined on the self-unloading ship by using the centering line and illumination method; In this application, after first accurately locating the installation centerline on the self-unloading ship, 1-2 extension auxiliary plates are set on each deck along the theoretical midship line position defined in the hull assembly stage on the reverse side of the main deck of the self-unloading ship, and 2 translation reference lines are drawn, and then the single-point system conveyor is assembled: The installation sequence of the single-point system components should be to install the rollers first, and then install the idlers and other accessories, and the installation of accessories should follow the principle of heavy to light; Therefore, the conveyor can be installed on the self-unloading ship quickly, reducing the installation difficulty and shortening the installation time.

Description

Technical Field

[0001] The invention relates to the technical field of installation methods for self-unloading ship conveyors, and in particular to an installation method for a single-point system conveyor for a self-unloading ship. Background Art

[0002] A self-unloading ship is a dry bulk cargo transport ship with a special cargo hold structure and unloading structure. It is equipped with an unloading device between the bottom of the cargo hold and the bottom of the ship, which is generally a conveyor, and can unload cargo in a continuous conveying manner. A self-unloading ship can centrally control the unloading operation and realize high-speed automatic unloading.

[0003] After collective exploration and analysis by the inventors, it was found that in the prior art, when installing the unloading device (conveyor) of a common self-unloading ship, since the conveyor needs to be installed between the bottom of the cargo hold and the bottom of the ship, the overall installation is difficult, time-consuming and labor-intensive.

[0004] In summary, the present application now proposes an installation method for a self-unloading ship single-point system conveyor to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide an installation method for a single-point system conveyor of a self-unloading ship, so as to solve the problem in the prior art that when installing the unloading device (conveyor) of a common self-unloading ship, the conveyor needs to be installed between the bottom of the cargo hold and the bottom of the ship, so the overall installation is difficult, time-consuming and labor-intensive.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a method for installing a conveyor of a single-point system of a self-unloading ship;

[0007] The specific steps include:

[0008] S1: Determine the installation center line of the single-point system conveyor: Determine the installation center line of the single-point system conveyor on the self-unloading ship by using the center-finding line lighting method;

[0009] S2: When the assembly and welding work of the main deck and above structures in the cargo hold area of ​​the self-unloading ship is basically completed, all single-point brackets shall be installed;

[0010] S3: calibrate the flatness of the single-point bracket in step S2, and calibrate the flatness and straightness of the support block panel;

[0011] S4: After the bracket in step S3 is calibrated, the roller and the roller base are positioned and installed;

[0012] S5: Then find the middle bow and stern reference point to coincide with the installation centerline;

[0013] S6: After the main hull of the self-unloading ship is closed, the 16m positioning straight line drawn by the slipway is used as the reference line to find the bow and stern reference points and draw the midship line;

[0014] S7: Then, on the back of the main deck of the self-unloading ship, 1 to 2 extension auxiliary plates are set on each deck along the theoretical midship line position defined in the general assembly stage of the self-unloading ship. Punching is performed on the extension auxiliary plates along the defined single-point system conveyor installation center line, and the left and right offsets are 1300mm according to the defined installation center line. Then, 2 translation reference lines are defined to check the left and right deviation of the bracket for installing the roller. If the deviation is large, corresponding adjustments need to be made according to the actual situation on site.

[0015] S8: Delineate the contour lines: Set an auxiliary equilateral angle steel with a height of about 800mm next to the roller base, and then use it to mark the contour lines;

[0016] S9: First, use the first trough structure to measure the center height of the self-unloading ship deck, and then measure the distance from the baseline. The theoretical value of the baseline is 14334mm, which is the basis for the vertical direction; then deviate downward and draw the actual contour line required for installing the single-point roller. The actual contour line is 12800mm away from the baseline;

[0017] S10: offset and extend the actual contour line in step S9 to the auxiliary angle steel on the port side, and then extend it to the column angle steel on the left side closest to the midship, and punch a sample punch hole as a permanent mark;

[0018] S11: Then offset and extend the port side contour line to the starboard side column angle steel 1800mm from the installation centerline, and punch a sample hole as a permanent mark;

[0019] S12: According to the contour lines that have been drawn, measure the height of each roller base, and according to the actual measurement results, add pads of different thicknesses to finally make the entire base at the same level, and then install the rollers;

[0020] S13: After the rollers are installed, perform an overall level check on the rollers to ensure that all rollers are at the same height from the contour line, and then remove the auxiliary angle steel;

[0021] S14: Then, the center line of the single-point hopper is delineated. The center line of the single-point hopper needs to be extended to the hopper opening structure on the main deck of the self-unloading ship using the installation center line. The center of the single-point hopper needs to coincide with the center of the single-point system conveyor.

[0022] S15: Assembly of single-point system conveyor: The installation order of single-point system components should be to install the roller first, then the roller and other accessories, and the installation of accessories should follow the principle of heavy first and light later;

[0023] S16: There are 10 rollers in the single-point system, 2 of which are 11 meters long and 8 of which are 9 meters long. The 11-meter-long rollers are for the bow and stern of the single-point system. The bow and stern should be distinguished first, and then installed from the stern according to the equipment lifting sequence. After every two sections are lifted into place, they are fixed with temporary support frames, and then assembled from the stern to the bow. Then the drive motor and hydraulic device are installed. The drive motor is installed on the left side of the roller, and the hydraulic device is installed on the right side of the roller.

[0024] S17: After the single point system rollers are installed in place, install the horizontal chains first, then install the cables and other accessories, and finally complete the installation.

[0025] Preferably, in step S5, the deviation of the coincidence between the middle bow and stern reference point and the installation centerline does not exceed ±2 mm.

[0026] More preferably, in step S6, the left and right deviation of the installation centerline is required to be no more than ±5 mm within a range of 30 m.

[0027] More preferably, in step S12, the overall height deviation of the base does not exceed ±2 mm.

[0028] More preferably, in step S13, the height difference in the roller does not exceed ±2 mm, and the deviation of the roller from the port side of the midship line does not exceed ±1.5 mm.

[0029] More preferably, in step S8, the upper and lower deviations of the contour lines do not exceed ±2 mm.

[0030] More preferably, in step S8, the equilateral angle steel is arranged beside the roller base, 1600 mm away from the installation center line.

[0031] More preferably, the error values ​​in step S2 are: straightness ±1 mm, flatness ±3 mm.

[0032] More preferably, in step S14, the deviation between the center of the single-point funnel and the center of the single-point system conveyor does not exceed ±2 mm.

[0033] The beneficial effects of the present invention are as follows: compared with the prior art, in the present application, after first finding the installation center line on the self-unloading ship, 1 to 2 extension auxiliary plates are set on each deck on the reverse side of the main deck of the self-unloading ship along the theoretical midship line position defined in the overall assembly stage of the hull of the self-unloading ship, and holes are punched on the extension auxiliary plates along the defined installation center line of the single-point system conveyor, and according to the defined installation center line, the plates are offset 1300 mm to the left and right, and then 2 translation reference lines are defined, and then the single-point system conveyor is assembled: the installation order of the single-point system components should be to install the rollers first, and then the rollers and other accessories, and the installation of the accessories should follow the principle of heavy first and light later; therefore, the conveyor can be quickly installed on the self-unloading ship, which reduces the installation difficulty and shortens the installation time. DETAILED DESCRIPTION

[0034] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The present invention provides a technical solution: a method for installing a single-point system conveyor of a self-unloading ship;

[0036] Specifically, the following steps are included:

[0037] S1: Determine the installation center line of the single-point system conveyor: Determine the installation center line of the single-point system conveyor on the self-unloading ship by using the center-finding line lighting method;

[0038] S2: When the assembly and welding work of the main deck and above structures in the cargo hold area of ​​the self-unloading ship is basically completed, all single-point brackets shall be installed;

[0039] S3: calibrate the flatness of the single-point bracket in step S2, and calibrate the flatness and straightness of the support block panel;

[0040] S4: After the bracket in step S3 is calibrated, the roller and the roller base are positioned and installed;

[0041] S5: Then find the middle bow and stern reference point to coincide with the installation centerline;

[0042] S6: After the main hull of the self-unloading ship is closed, the 16m positioning straight line drawn by the slipway is used as the reference line to find the bow and stern reference points and draw the midship line;

[0043] S7: Then, on the back of the main deck of the self-unloading ship, 1 to 2 extension auxiliary plates are set on each deck along the theoretical midship line position defined in the general assembly stage of the self-unloading ship. Punching is performed on the extension auxiliary plates along the defined single-point system conveyor installation center line, and the left and right offsets are 1300mm according to the defined installation center line. Then, 2 translation reference lines are defined to check the left and right deviation of the bracket for installing the roller. If the deviation is large, corresponding adjustments need to be made according to the actual situation on site.

[0044] S8: Delineate the contour lines: Set an auxiliary equilateral angle steel with a height of about 800mm next to the roller base, and then use it to mark the contour lines;

[0045] S9: First, use the first trough structure to measure the center height of the self-unloading ship deck, and then measure the distance from the baseline. The theoretical value of the baseline is 14334mm, which is the basis for the vertical direction; then deviate downward and draw the actual contour line required for installing the single-point roller. The actual contour line is 12800mm away from the baseline;

[0046] S10: offset and extend the actual contour line in step S9 to the auxiliary angle steel on the port side, and then extend it to the column angle steel on the left side closest to the midship, and punch a sample punch hole as a permanent mark;

[0047] S11: Then offset and extend the port side contour line to the starboard side column angle steel 1800mm from the installation centerline, and punch a sample hole as a permanent mark;

[0048] S12: According to the contour lines that have been drawn, measure the height of each roller base, and according to the actual measurement results, add pads of different thicknesses to finally make the entire base at the same level, and then install the rollers;

[0049] S13: After the rollers are installed, perform an overall level check on the rollers to ensure that all rollers are at the same height from the contour line, and then remove the auxiliary angle steel;

[0050] S14: Then, the center line of the single-point hopper is delineated. The center line of the single-point hopper needs to be extended to the hopper opening structure on the main deck of the self-unloading ship using the installation center line. The center of the single-point hopper needs to coincide with the center of the single-point system conveyor.

[0051] S15: Assembly of single-point system conveyor: The installation order of single-point system components should be to install the roller first, then the roller and other accessories, and the installation of accessories should follow the principle of heavy first and light later;

[0052] S16: There are 10 rollers in the single-point system, 2 of which are 11 meters long and 8 of which are 9 meters long. The 11-meter-long rollers are for the bow and stern of the single-point system. The bow and stern should be distinguished first, and then installed from the stern according to the equipment lifting sequence. After every two sections are lifted into place, they are fixed with temporary support frames, and then assembled from the stern to the bow. Then the drive motor and hydraulic device are installed. The drive motor is installed on the left side of the roller, and the hydraulic device is installed on the right side of the roller.

[0053] S17: After the single point system rollers are installed in place, install the horizontal chains first, then install the cables and other accessories, and finally complete the installation.

[0054] In the present application, specifically, in order to further meet strict requirements, in step S5, the deviation of the coincidence between the middle bow and stern reference point and the installation centerline does not exceed ±2 mm.

[0055] In the present application, specifically, in order to further meet strict requirements, in step S6, it is required that the left and right deviation of the installation center line does not exceed ±5 mm within a range of 30 m.

[0056] In the present application, specifically, in order to further meet strict requirements, in step S12, the overall height deviation of the base does not exceed ±2 mm.

[0057] In the present application, specifically, in order to further meet strict requirements, in step S13, the height difference in the roller does not exceed ±2 mm, and the deviation of the roller from the port side of the midship line does not exceed ±1.5 mm.

[0058] In the present application, specifically, in order to further meet strict requirements, in step S8, the upper and lower deviations of the contour lines do not exceed ±2 mm.

[0059] In the present application, specifically, in order to further meet strict requirements, in step S8, an equilateral angle steel is arranged beside the roller base, 1600 mm away from the installation center line.

[0060] In the present application, specifically, in order to further meet strict requirements, the error values ​​in step S2 are: straightness ±1 mm, flatness ±3 mm.

[0061] In the present application, specifically, in order to further meet strict requirements, in step S14, the deviation between the center of the single-point funnel and the center of the single-point system conveyor is not more than ±2 mm.

[0062] In this application, specifically, further explanations are as follows: the bracket used for the single-point system conveyor should be processed and formed in the inner field and installed in the segmentation and overall stage. The determination of the center line of the single-point system conveyor is carried out after the hull of the self-unloading ship is fully closed.

[0063] Secondly, after retrieval and analysis, it was found that the installation process of this equipment was the first of its kind, which provided strong technical guidance for shipyard construction and ensured the accurate installation and use of the equipment.

[0064] It can be known from the actual installation records that in this application, firstly, after finding the installation center line on the self-unloading ship, 1 to 2 extension auxiliary plates are set on each deck on the back of the main deck of the self-unloading ship along the theoretical midship line position defined in the overall assembly stage of the self-unloading ship's hull, and holes are punched on the extension auxiliary plates along the defined single-point system conveyor installation center line, and according to the defined installation center line, the plates are offset 1300mm to the left and right, and then 2 translation reference lines are defined, and then the single-point system conveyor is assembled: the installation order of the single-point system components should be to install the rollers first, and then the rollers and other accessories, and the installation of the accessories should follow the principle of heavy first and light later; so the conveyor can be quickly installed on the self-unloading ship, which reduces the difficulty of installation and shortens the installation time.

[0065] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for installing a self-unloading ship single-point system conveyor, characterized in that: The specific steps include: S1: Determine the installation center line of the single-point system conveyor: Determine the installation center line of the single-point system conveyor on the self-unloading ship by using the center-finding line lighting method; S2: When the assembly and welding work of the main deck and above structures in the cargo hold area of ​​the self-unloading ship is basically completed, all single-point brackets shall be installed; S3: calibrate the flatness of the single-point bracket in step S2, and calibrate the flatness and straightness of the support block panel; S4: After the bracket in step S3 is calibrated, the roller and the roller base are positioned and installed; S5: Then find the middle bow and stern reference point to coincide with the installation centerline; S6: After the main hull of the self-unloading ship is closed, the 16m positioning straight line drawn by the slipway is used as the reference line to find the bow and stern reference points and draw the midship line; S7: Then, on the back of the main deck of the self-unloading ship, 1 to 2 extension auxiliary plates are set on each deck along the theoretical midship line position defined in the general assembly stage of the self-unloading ship. Punching is performed on the extension auxiliary plates along the defined single-point system conveyor installation center line, and the left and right offsets are 1300mm according to the defined installation center line. Then, 2 translation reference lines are defined to check the left and right deviation of the bracket for installing the roller. If the deviation is large, corresponding adjustments need to be made according to the actual situation on site. S8: Delineate the contour lines: Set an auxiliary equilateral angle steel with a height of about 800mm next to the roller base, and then use it to mark the contour lines; S9: First, use the first trough structure to measure the center height of the self-unloading ship deck, and then measure the distance from the baseline. The theoretical value of the baseline is 14334mm, which is the basis for the vertical direction; then deviate downward and draw the actual contour line required for installing the single-point roller. The actual contour line is 12800mm away from the baseline; S10: offset and extend the actual contour line in step S9 to the auxiliary angle steel on the port side, and then extend it to the column angle steel on the left side closest to the midship, and punch a sample punch hole as a permanent mark; S11: Then offset and extend the port side contour line to the starboard side column angle steel 1800mm from the installation centerline, and punch a sample hole as a permanent mark; S12: According to the contour lines that have been drawn, measure the height of each roller base, and according to the actual measurement results, add pads of different thicknesses to finally make the entire base at the same level, and then install the rollers; S13: After the rollers are installed, perform an overall level check on the rollers to ensure that all rollers are at the same height from the contour line, and then remove the auxiliary angle steel; S14: Then, the center line of the single-point hopper is delineated. The center line of the single-point hopper needs to be extended to the hopper opening structure on the main deck of the self-unloading ship using the installation center line. The center of the single-point hopper needs to coincide with the center of the single-point system conveyor. S15: Assembly of single-point system conveyor: The installation order of single-point system components should be to install the roller first, then the roller and other accessories, and the installation of accessories should follow the principle of heavy first and light later; S16: There are 10 rollers in the single-point system, 2 of which are 11 meters long and 8 of which are 9 meters long. The 11-meter-long rollers are for the bow and stern of the single-point system. The bow and stern should be distinguished first, and then installed from the stern according to the equipment lifting sequence. After every two sections are lifted into place, they are fixed with temporary support frames, and then assembled from the stern to the bow. Then the drive motor and hydraulic device are installed. The drive motor is installed on the left side of the roller, and the hydraulic device is installed on the right side of the roller. S17: After the single point system rollers are installed in place, install the horizontal chains first, then install the cables and other accessories, and finally complete the installation.

2. The installation method of a self-unloading ship single-point system conveyor according to claim 1 is characterized in that: In step S5, the deviation of the coincidence between the middle bow and stern reference point and the installation centerline does not exceed ±2 mm.

3. The installation method of a self-unloading ship single-point system conveyor according to claim 2 is characterized in that: In step S6, it is required that the left and right deviation of the installation center line does not exceed ±5 mm within a range of 30 m.

4. The installation method of a self-unloading ship single-point system conveyor according to claim 3 is characterized in that: In step S12, the overall height deviation of the base does not exceed ±2 mm.

5. The installation method of a self-unloading ship single-point system conveyor according to claim 4 is characterized in that: In step S13, the height difference of the roller does not exceed ±2 mm, and the deviation of the roller from the port side of the midship line does not exceed ±1.5 mm.

6. The installation method of a self-unloading ship single-point system conveyor according to claim 5 is characterized in that: In step S8, the upper and lower deviations of the contour lines do not exceed ±2 mm.

7. The installation method of a self-unloading ship single-point system conveyor according to claim 6 is characterized in that: In step S8, the equilateral angle steel is arranged beside the roller base, 1600 mm away from the installation center line.

8. The installation method of a self-unloading ship single-point system conveyor according to claim 7 is characterized in that: The error values ​​in step S2 are: straightness ±1 mm, flatness ±3 mm.

9. The installation method of a self-unloading ship single-point system conveyor according to claim 8, characterized in that: In step S14, the deviation between the center of the single-point hopper and the center of the single-point system conveyor does not exceed ±2 mm.