A method for installing single-point conveying equipment of self-unloading ship

Abstract

The present invention relates to the technical field of installation of single-point conveying equipment for ships. The present invention discloses a method for installing single-point conveying equipment for self-unloading ships, comprising the following steps: S1. First, after the main hull is closed, the 16m positioning straight line defined by the slipway is used as a reference line to find the bow and stern reference points and draw the midship line, which is the centerline of the single-point conveying equipment; S2. Then, on the reverse side of the main deck, along the midship line position defined in the hull assembly stage, 1-2 extension auxiliary plates are burned on each deck. The present invention determines the centerline of the single-point conveying equipment after the main hull is closed, and uses the centering line lighting method to determine the centerline of the single-point conveying equipment, and by marking contour marks, the accuracy of roller installation can be improved. In addition, the installation method of the present invention reduces the labor intensity of the operation, has high operation efficiency, and also reduces the workload of the adjustment operation. The measurement data is small, the measurement data is intuitive, and the error is small.

Description

Technical Field

[0001] The invention relates to the technical field of installation of single-point conveying equipment for ships, and in particular to an installation method of single-point conveying equipment for self-unloading ships. Background Art

[0002] Self-unloading ship, the hull itself is equipped with unloading equipment to unload materials to the dock. A dry bulk cargo transport ship with a special cargo hold structure and unloading equipment that can unload cargo in a continuous conveying manner. Self-unloading ships can centrally control unloading operations and achieve high-speed automatic unloading. Generally, single-point conveyors are required on self-unloading ships to realize cargo transportation.

[0003] However, the single-point conveying equipment of traditional self-unloading ships on the market is installed on the back of the main deck, which makes the equipment difficult to install, especially when it is underwater. The self-unloading ship will rise and fall with the waves at any time and is always in a dynamic state, which further increases the difficulty of equipment installation. Summary of the invention

[0004] The purpose of the present invention is to provide a method for installing single-point conveying equipment of a self-unloading ship, so as to solve the problem that the single-point conveying equipment of a traditional self-unloading ship is installed on the back of the main deck, and the equipment is difficult to install, especially in the underwater state. The self-unloading ship will rise and fall with the waves at any time and is always in a dynamic state, thereby further increasing the difficulty of equipment installation.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A method for installing a single-point conveying device for a self-unloading ship comprises the following steps:

[0007] S1. After the main hull is closed, use the 16m positioning straight line marked by the slipway as the reference line to find the bow and stern reference points and draw the midship line. This midship line is the center line of the single-point conveying equipment;

[0008] S2. Then, on the reverse side of the main deck, along the midship line position drawn in the hull assembly stage, burn 1-2 extension auxiliary plates for each deck, punch holes on the extension auxiliary plates along the designated center line of the single-point conveying equipment, and vertically offset to the lower opening sealing plate of the slot structure according to the designated center line, draw another center line, punch holes, and then draw 2 translation reference lines to check the left and right deviation of the bracket for installing the roller;

[0009] S3. After the center line of the single-point conveying equipment is confirmed, an auxiliary equilateral angle steel is burned next to the roller base to mark the contour line;

[0010] S4. The installation sequence of single-point conveying equipment should be to install the roller first, then the roller and other accessories;

[0011] S5. After the rollers of the single-point conveying equipment are installed in place, install the horizontal chain first, and then install the cable to complete the installation of the single-point conveying equipment.

[0012] Preferably, in step S1, the left and right deviation of the center line of the single-point conveying equipment does not exceed ±5 mm within a range of 30 m.

[0013] Preferably, in step S3, the contour line marking operation is as follows: first, the measured data of the center height of the anti-top deck of the first trough structure from the baseline position is used as the vertical basis, and the actual contour line required for installing the single-point roller is offset downward and drawn, and then the contour line is offset and extended to the auxiliary angle steel on the port side, and then extended to the column angle steel on the left side closest to the midship, and punched with a sample punch as a permanent mark; then the port side contour line is offset and extended to the column angle steel on the starboard side 1800mm away from the center, and a sample punch is punched with a sample punch as a permanent mark.

[0014] Preferably, in step S3, the center line of the single-point funnel needs to be extended to the main deck funnel opening structure using the center line drawn on the segmented frame, and the center of the funnel needs to coincide with the center of the single-point conveying equipment, with a left-right deviation of no more than ±2 mm.

[0015] Preferably, in step S4, before installing the roller of the single-point conveying equipment, it is necessary to calibrate the flatness of all single-point support pads. The distance between the center of the pad and the center line is 1300mm, and the deviation must not exceed ±1.5mm. After the single-point support pad plane calibration work is completed, the roller is installed.

[0016] Preferably, in step S4, the installation height of the single-point roller is adjusted by temporarily adjusting the pads and the top support bolts according to the contour lines drawn in the slipway stage. After leveling, the left and right height difference of the single-point roller on the same rib line shall not exceed ±2.5mm.

[0017] Preferably, in step S4, before assembling the rollers of the single-point conveying equipment, the arrival of the self-unloading system equipment is checked first. The equipment is supplied in bulk, with a total of 10 pieces, 2 of which are 11 meters long, and 8 of which are 9 meters long. The 11-meter-long ones are the bow and stern ends of the single-point system. The bow and stern ends should be distinguished first, and then the installation should be started from the stern according to the equipment lifting sequence. After every two sections are lifted into place, they are fixed with temporary supports, and then assembled section by section according to the principle of from stern to bow.

[0018] Preferably, in step S4, the driving motor is installed on the left side of the roller, and the hydraulic device is installed on the right side of the roller.

[0019] Preferably, after the single-point conveying equipment is debugged, epoxy pouring is carried out, and the pouring is carried out one by one from the stern to the bow according to the docking position of the equipment.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention determines the center line of the single-point conveying equipment after the main hull is closed, and uses the center-pulling line lighting method to determine the center line of the single-point conveying equipment, and by marking contour lines, the accuracy of roller installation can be improved. The installation method of the present invention reduces the labor intensity of the operation, has high operation efficiency, and also reduces the workload of the adjustment operation. The measurement data is small, the measurement data is intuitive, and the error is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The present invention is a schematic diagram of the installation status of a method for installing single-point conveying equipment of a self-unloading ship. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in 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.

[0024] The present invention provides a technical solution: a method for installing a single-point conveying device for a self-unloading ship, comprising the following steps:

[0025] S1. After the main hull is closed, the 16m positioning straight line marked by the slipway is used as the reference line to find the bow and stern reference points and draw the midship line. The left and right deviations of the centerline are required to be within ±5mm within a range of 30m. After inspection and approval by the shipowner, the midship line is the centerline of the single-point conveying equipment;

[0026] S2. On the back side of the main deck, along the midship line defined in the hull assembly stage, burn 1-2 extension auxiliary plates for each deck, punch holes on the extension auxiliary plates along the defined center line of the single-point conveying equipment, and vertically offset to the lower sealing plate of the slot structure opening according to the defined center line, and then draw another center line, punch holes, and offset 1300mm to the left and right, and then draw 2 translation reference lines to check the left and right deviation of the bracket for installing the roller. If the deviation is large, it is necessary to make corresponding adjustments according to the actual situation on site;

[0027] S3. After the center line of the single-point conveying equipment is confirmed, an auxiliary equilateral angle steel (EA75*75*8) with a height of about 800mm is burned next to the roller base (1600mm from the center) to mark the contour line. The upper and lower deviations of the contour line are required to be no more than ±2mm. First, the measured data of the center height of the anti-top deck of the first trough structure (505 segments) from the baseline position (theoretical value is 14334mm) is used as the vertical basis, and the actual contour line required for the installation of the single-point roller is deviated downward and marked (1280 from the baseline). 0mm), then offset and extend this contour line 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 hole as a permanent mark; then offset and extend the port contour line to the column angle steel on the starboard side 1800mm from the center (511 sections are 2400mm from the center), punch a sample hole as a permanent mark, the center line of the single-point funnel needs to use the center line drawn on the segment frame to extend to the main deck funnel opening structure, the funnel center needs to coincide with the center of the single-point conveying equipment, and the left and right deviations should not exceed ±2mm;

[0028] S4. The installation order of single-point conveying equipment should be to install the roller first, and then install the roller and other accessories. The installation of accessories should follow the principle of heavy first and light later. Before installing the roller of single-point conveying equipment, it is necessary to calibrate the flatness of all single-point support pads. The distance between the center of the pad and the center line is 1300mm, and the deviation shall not exceed ±1.5mm. Determine whether adjustment is needed based on actual conditions. After the plane calibration of the single-point support pad is completed, install the roller. Then, according to the contour lines delineated in the slipway stage, use temporary adjustment pads and top support bolts to adjust the installation height of the single-point roller. After leveling, the left and right height difference of the single-point roller on the same rib line shall not exceed ±2.5mm; finally, use specially designed tooling tools to verify whether the installation of each set of single-point rollers meets the requirements to ensure the operation of the single-point conveying equipment;

[0029] Before assembling the rollers of the single-point conveying equipment, first check the arrival of the self-unloading system equipment. The equipment is supplied in bulk, with a total of 10 pieces, 2 of which are 11 meters long, and 8 of which are 9 meters long. The 11-meter-long ones are the bow and stern ends of the single-point system. The bow and stern ends should be distinguished first, and then the installation should start from the stern according to the equipment lifting sequence. After every two sections are lifted into place, they are fixed with temporary supports, and then assembled section by section according to the principle of from stern to bow. Special attention should be paid to the installation direction of the roller (8 meters long) where the drive motor is 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. Since the single-point system is not supplied as a whole, but supplied in different time periods, and the cycle is not determined, The supply principle is to start supplying from the 5# cargo hold area to the 1# cargo hold area. After the first batch of supply, the single-point conveying equipment will be pulled into the 5# cargo hold for assembly through auxiliary equipment such as winches, and then the single-point conveying equipment will be assembled from stern to bow. After the entire single-point conveying equipment is assembled, the single-point conveying equipment will be pulled back and forth by the winches temporarily installed in the bow of the 1# cargo hold and the stern of the 5# cargo hold to observe the contact between the single-point roller and the conveying equipment track. If the two are in contact, the roller rotates with the movement of the conveyor equipment track, and no adjustment is required; if the two are not in contact, adjustments need to be made according to different situations based on actual conditions. If there is no contact with the conveyor track during the entire operation of the conveyor, it is necessary to measure the gap between the roller and the track and adjust the installation height of the roller; if there is no contact only in a local stage during the entire operation of the conveyor, it is necessary to consider it separately. If more than 75% of all rollers contacted by the conveyor are in contact during a single static stage, no modification is required. If it does not reach 75%, the installation height of the roller needs to be adjusted. The specific adjustment height needs to be determined through measurement and specific analysis.

[0030] The assembly status of each single-point roller and single-point equipment needs to be reported to the shipowner to ensure the normal operation of the single-point equipment;

[0031] S5. After the rollers of the single-point conveying equipment are installed in place, install the horizontal chain first, and then install the cable to complete the installation of the single-point conveying equipment.

[0032] In this embodiment, after the single-point conveying equipment is debugged, epoxy pouring is carried out. The pouring is carried out one by one from the stern to the bow according to the docking position of the equipment.

[0033] According to another embodiment, the conditions for installing a single-point conveying device are:

[0034] a. The assembly and welding work of the main deck and above structures in the cargo hold area of ​​the hull has been basically completed (Note: structures with single-point devices need to be positioned and installed based on the center line of the segment).

[0035] b. All single-point supports should be installed in place and calibrated for flatness. The flatness and straightness of the support block panel (flatness is the overall requirement) should be ±1mm for straightness and ±3mm for flatness, and then submitted to the shipowner for acceptance.

[0036] After the bracket is calibrated, the rollers are positioned and installed using a specially designed tooling.

[0037] c. Before installing the roller steel, guide rollers and wheels of the single-point conveying equipment, the surrounding railings, platforms, etc. should be assembled.

[0038] The bow and stern reference points should coincide with the theoretical center line, with a deviation of no more than ±2mm, and must be inspected and accepted by the quality inspection department and approved by the shipowner.

[0039] In summary of the above embodiments, the present invention determines the center line of the single-point conveying equipment after the main hull is closed, and uses the center-pulling line lighting method to determine the center line of the single-point conveying equipment, and by marking contour lines, the accuracy of roller installation can be improved. The installation method of the present invention reduces the labor intensity of the operation, has high operation efficiency, and also reduces the workload of the adjustment operation. The measurement data is small, the measurement data is intuitive, and the error is small.

[0040] The present invention has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the present invention to the scope of the described embodiments.

Claims

1. A method for installing a single-point conveying equipment for a self-unloading ship, characterized in that: The following steps are involved: S1. After the main hull is closed, use the 16m positioning straight line marked by the slipway as the reference line to find the bow and stern reference points and draw the midship line. This midship line is the center line of the single-point conveying equipment; S2. Then, on the reverse side of the main deck, along the midship line position drawn in the hull assembly stage, burn 1-2 extension auxiliary plates for each deck, punch holes on the extension auxiliary plates along the designated center line of the single-point conveying equipment, and vertically offset to the lower opening sealing plate of the slot structure according to the designated center line, draw another center line, punch holes, and then draw 2 translation reference lines to check the left and right deviation of the bracket for installing the roller; S3. After the center line of the single-point conveying equipment is confirmed, an auxiliary equilateral angle steel is burned next to the roller base to mark the contour line; S4. The installation sequence of single-point conveying equipment should be to install the roller first, then the roller and other accessories; S5. After the rollers of the single-point conveying equipment are installed in place, install the horizontal chain first, and then install the cable to complete the installation of the single-point conveying equipment; Among them, in step S3, the contour line marking operation is as follows: first, the measurement data of the center height of the anti-top deck of the first groove structure from the baseline position is used as the vertical basis, and the actual contour line required for installing the single-point roller is offset downward and drawn, and then the contour line is offset and extended to the auxiliary angle steel on the port side, and then extended to the column angle steel on the left side closest to the midship, and punched with a sample punch as a permanent mark; then the port side contour line is offset and extended to the column angle steel on the starboard side 1800mm away from the center, and a sample punch is punched with a sample punch as a permanent mark.

2. The method for installing a self-unloading ship single-point conveying equipment according to claim 1, characterized in that: In the step S1, the left and right deviation of the center line of the single-point conveying equipment does not exceed ±5 mm within a range of 30 m.

3. The method for installing a self-unloading ship single-point conveying equipment according to claim 1, characterized in that: In step S3, the center line of the single-point funnel needs to be extended to the main deck funnel opening structure using the center line drawn on the segmented frame. The center of the funnel needs to coincide with the center of the single-point conveying equipment, with a left-right deviation of no more than ±2 mm.

4. The method for installing a self-unloading ship single-point conveying equipment according to claim 1, characterized in that: In step S4, before installing the roller of the single-point conveying equipment, it is necessary to calibrate the flatness of all single-point support pads. The distance between the center of the pad and the center line is 1300mm, and the deviation must not exceed ±1.5mm. After the single-point support pad plane calibration work is completed, the roller is installed.

5. The method for installing a self-unloading ship single-point conveying equipment according to claim 1, characterized in that: In step S4, the installation height of the single-point roller is adjusted by temporarily adjusting the pads and the top support bolts according to the contour lines drawn at the slipway stage. After leveling, the left and right height difference of the single-point roller on the same rib line shall not exceed ±2.5mm.

6. The method for installing a self-unloading ship single-point conveying equipment according to claim 1, characterized in that: In the step S4, before assembling the rollers of the single-point conveying equipment, the arrival of the self-unloading system equipment is checked first. The equipment is supplied in bulk, with a total of 10 pieces, 2 of which are 11 meters long, and 8 of which are 9 meters long. The 11-meter-long ones are the bow and stern ends of the single-point system. The bow and stern ends should be distinguished first, and then the installation should be started from the stern according to the equipment lifting sequence. After every two sections are lifted into place, they are fixed with temporary supports, and then assembled section by section according to the principle of from stern to bow.

7. The method for installing a self-unloading ship single-point conveying equipment according to claim 1, characterized in that: In step S4, the driving motor is installed on the left side of the roller, and the hydraulic device is installed on the right side of the roller.

8. The method for installing a self-unloading ship single-point conveying equipment according to claim 1, characterized in that: After the single-point conveying equipment is debugged, epoxy pouring is carried out. The pouring is carried out one by one from the stern to the bow according to the docking position of the equipment.

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