CN115848585A - Installation method of single-point conveying equipment of self-discharging ship - Google Patents

Abstract

The invention relates to the technical field of ship single-point conveying equipment installation, and discloses a method for installing self-unloading ship single-point conveying equipment, which comprises the following steps of: s1, after a main ship body is folded, taking a 16m positioning straight line defined by a slipway as a reference line, finding out datum points of a bow and a stern, and marking out a midship line, wherein the central line is the central line of single-point conveying equipment; s2, burning 1-2 extension auxiliary plates on each deck along a midship line defined in the total assembly stage of the ship body on the reverse side of the main deck. The method is carried out after the main ship body is folded up by determining the central line of the single-point conveying equipment, a central stay line lighting method is found, the central line of the single-point conveying equipment is determined, contour line marks are drawn, the accuracy of roller installation can be improved, the installation method reduces the labor intensity of operation, is high in operation efficiency, reduces the workload of adjustment operation, and is small in measured data, visual in measured data and small in error.

Description

A self-unloading ship single-point conveying equipment installation method

technical field

The invention relates to the technical field of installation of ship single-point conveying equipment, in particular to a method for installing self-unloading ship single-point conveying equipment.

Background technique

Self-unloading ship, the hull itself has a discharge device that can unload materials to the wharf. A dry bulk carrier with special cargo hold structure and unloading equipment, capable of unloading in continuous delivery. The self-unloading ship can centrally control the unloading operation and realize high-speed automatic unloading. Generally, a single-point conveyor is required on the self-unloading ship to realize the transportation of goods.

However, at present, the single-point conveying equipment of traditional self-unloading ships on the market is installed on the opposite side of the main deck, which is difficult to install, especially in the underwater state. Difficulty in installing equipment.

Contents of the invention

The purpose of the present invention is to provide a self-unloading ship single-point conveying equipment installation method to solve the problem that the traditional self-unloading ship single-point conveying equipment is installed on the opposite side of the main deck, and the equipment is difficult to install, especially in the underwater state, the self-unloading ship will With the ups and downs of the water at any time, it is always in a dynamic state, which further increases the difficulty of equipment installation.

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

A self-unloading ship single-point conveying equipment installation method, comprising the following steps:

S1. First, after the main hull is closed, use the 16m positioning straight line delineated by the berth as a reference line to find the bow and stern reference points and draw the midship line. This center line is the center line of the single-point conveying equipment;

S2. Then, on the opposite side of the main deck, burn 1-2 extension auxiliary boards on each deck along the position of the midship line designated in the general assembly stage of the hull. Line punching and punching, and according to the defined center line, vertically offset to the lower sealing plate of the slot structure opening, then draw a center line, punch the sample, and then draw two translation reference lines , used to check the left and right deviation of the bracket where the roller is installed;

S3. After the centerline of the single-point conveying equipment is confirmed, burn an auxiliary equilateral angle steel next to the roller base to delineate the contour mark;

S4. The installation sequence of single-point conveying equipment should first install the rollers, and then install the rollers and other accessories;

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

Preferably, in the step S1, the left-right deviation of the centerline of the single-point conveying equipment does not exceed ±5mm within a range of 30m.

Preferably, in the step S3, the delimitation operation of the contour line mark is as follows: first, the measurement data of the height of the center of the reverse top deck of the first trough structure from the baseline position is used as the basis for the vertical direction, and the line is shifted downward and marked Get the actual contour line required to install the single-point roller, then offset the contour line and extend it 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 the punch hole , as a permanent mark; then the contour line on the port side is offset and extended to the column angle steel of 1800mm in the starboard span, and punched with punching holes, as a permanent mark.

Preferably, in the step S3, the centerline of the single-point funnel needs to be extended to the opening structure of the funnel on the main deck using the centerline delineated on the segmented frame, the center of the funnel needs to coincide with the center of the single-point conveying equipment, and the left-right deviation should not exceed ±2mm.

Preferably, in the step S4, before the rollers of the single-point conveying equipment are installed, it is necessary to calibrate the flatness of all the single-point support pads, the distance between the center of the pads and the center line is 1300mm, and the deviation shall not exceed ±1.5mm, Install the rollers after the plane calibration of the single-point support block is completed.

Preferably, in the step S4, according to the contour line defined in the berth stage, the installation height of the single-point roller is adjusted by using temporary adjustment pads and support bolts, and the left and right positions of the single-point roller on the same rib position line are adjusted. The height difference shall not exceed ±2.5mm.

Preferably, in the step S4, before the idler rollers of the single-point conveying equipment are assembled, the arrival of the self-unloading system equipment is first checked. The equipment is supplied in bulk, and there are 10 pieces in total, 2 pieces are 11 meters long, and 8 pieces are 9 meters long. , the 11-meter-long one is the bow and stern of the single-point system. The bow and stern should be distinguished first, and then the installation starts from the stern according to the hoisting sequence of the equipment. The principle of stern to bow is assembled section by section.

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

Preferably, after the commissioning of the single-point conveying equipment is completed, the epoxy pouring work 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.

Compared with prior art, the beneficial effect of the present invention is:

The present invention determines the centerline of the single-point conveying equipment after the main hull is fully closed, and determines the centerline of the single-point conveying equipment through the method of finding the central pull line according to the light, and by delimiting the contour mark, the accuracy of roller installation can be improved. Moreover, 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, has less measurement data, and the measurement data is intuitive and the error is small.

Description of drawings

Fig. 1 is a schematic diagram of an installation state of a self-unloading ship single-point conveying equipment installation method.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The invention provides a technical solution: a self-unloading ship single-point conveying equipment installation method, including the following steps:

S1. After the main hull is closed, use the 16m positioning straight line drawn by the berth as a reference line to find out the bow and stern reference points and draw the midship line. The left and right deviation of the center line is required to be within the range of 30m. The shipowner's inspection and approval, this center line is the center line of single-point conveying equipment;

S2. On the opposite side of the main deck, along the position of the midship line designated in the general assembly stage of the hull, burn 1-2 extension auxiliary boards on each deck, and on the extension auxiliary boards along the centerline of the designated single-point conveying equipment Knock out the punching hole, and according to the defined center line, vertically offset to the lower sealing plate of the opening of the groove structure, and then draw a center line, and knock out the sample punching hole, offset 1300mm left and right, and then draw 2 A translation reference line is used to check the left and right deviation of the bracket where the roller is installed. When the deviation is large, corresponding adjustments should be made according to the actual situation on site;

S3. The demarcation of the contour line needs to be done after confirming the center line of the single-point conveying equipment, and burn an auxiliary equilateral angle steel (EA75*75*8) next to the roller base (at a distance of 1600mm), with a height of about 800mm, for To delineate the contour mark, it is required that the upper and lower deviation of the contour line does not exceed ±2mm; firstly, the measured data (theoretical value is 14334mm) from the center height of the reverse top deck of the first trough structure (505 segment) to the baseline position is Based on the vertical direction, offset downwards and draw the actual contour line (12800mm from the baseline) required for the installation of single-point rollers, then offset and extend this contour line to the auxiliary angle steel on the port side, and then extend to the left side On the upright angle steel nearest to the midship of the ship, punch a sample punch as a permanent mark; then shift the contour line of the port side and extend it to the upright angle steel of 1800mm in the starboard span (the 511 section is 2400mm in the span), Knock the sample punching hole as a permanent mark. The centerline of the single-point funnel needs to use the centerline delineated on the segmented frame to extend to the funnel opening structure on the main deck. The center of the funnel must coincide with the center of the single-point conveying equipment. More than ±2mm;

S4. The installation sequence of single-point conveying equipment should be to install rollers first, and then install rollers and other accessories. The installation of accessories should follow the principle of first being heavy and then light. 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 required according to the actual situation. After the single-point support pad plane calibration is completed, install the rollers, and then, according to For the contour line defined at the berth stage, the installation height of the single-point roller is adjusted by using temporary adjustment pads and top support bolts. After leveling, the height difference between the left and right 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 single-point conveying equipment;

Before assembling the idler rollers of the single-point conveying equipment, first check the arrival of the self-unloading system equipment. The equipment is supplied in bulk. There are 10 pieces in total, 2 pieces are 11 meters long, 8 pieces are 9 meters long, and the 11-meter-long one is a single-point system. Bow and stern, first distinguish the bow and stern, and then install from the stern according to the hoisting sequence of the equipment. After every two sections are hoisted in place, fix them with temporary supports, and then assemble them section by section according to the principle from stern to bow , special attention should be paid to the installation direction of the idler roller (8 meters long) where the drive motor is installed. The drive motor is installed on the left side of the idler roller, and the hydraulic device is installed on the right side of the idler roller. Supply in different time periods, and the cycle is undecided. The principle of supply 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 to the Assemble in the 5# cargo hold, and then assemble the single-point conveying equipment one by one from the stern to the bow. After the entire single-point conveying equipment is assembled, use the hoist temporarily installed at the bow of the 1# cargo hold and the stern of the 5# cargo hold to pull it back and forth For single-point conveying equipment, observe the contact between the single-point roller and the track of the conveying equipment. If the two are in contact, the roller will follow the movement of the conveyor track and rotate without any adjustment; if the two do not touch, it needs to be adjusted according to the actual situation. Adjust according to different situations. If the conveying equipment has not been in contact with the conveying equipment track during the entire operation process, it is necessary to measure the gap between the roller and the track and adjust the installation height of the roller; Consider it separately. If more than 75% of all the rollers in contact with the conveying equipment are in contact during a single static stage, no modification is required. If it does not reach 75%, the installation height of the rollers needs to be adjusted. The specific adjustment height needs to be measured and analyzed in detail inferred.

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;

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

In this embodiment, after the commissioning of the single-point conveying equipment is completed, the epoxy pouring work 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.

According to another embodiment, the conditions for installing single-point conveying equipment should be met:

a. The assembly and welding of the main deck and above structures in the cargo hold area of the hull are basically completed (note: structures with single-point devices need to be positioned and installed based on the centerline of the section).

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

After the bracket is calibrated, use the designed special tooling to position and install the rollers.

c. Before the single-point conveying equipment idler steel, guide rollers and rollers are installed, the surrounding railings and platforms should be assembled.

The centering bow and stern reference points should coincide with the theoretical centerline, and the deviation should not exceed ±2mm, and must be checked and accepted by the quality inspection department and approved by the shipowner.

Based on the above-mentioned embodiments, the present invention determines the centerline of the single-point conveying equipment after the main hull is fully closed, finds the center line and illuminates the method, determines the centerline of the single-point conveying equipment, and marks the contour line, which can The accuracy of roller installation is improved, and the installation method of the present invention reduces the labor intensity of the operation, the operation efficiency is high, and the workload of the adjustment operation is also reduced, the measurement data is less, the measurement data is intuitive, and the error is small.

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

Claims (9)

1. A self-unloading ship single-point conveying equipment installation method, is characterized in that, comprises the following steps: S1. First, after the main hull is closed, use the 16m positioning straight line delineated by the berth as a reference line to find the bow and stern reference points and draw the midship line. This center line is the center line of the single-point conveying equipment; S2. Then, on the opposite side of the main deck, burn 1-2 extension auxiliary boards on each deck along the position of the midship line designated in the general assembly stage of the hull. Line punching and punching, and according to the defined center line, vertically offset to the lower sealing plate of the slot structure opening, then draw a center line, punch the sample, and then draw two translation reference lines , used to check the left and right deviation of the bracket where the roller is installed; S3. After the centerline of the single-point conveying equipment is confirmed, burn an auxiliary equilateral angle steel next to the roller base to delineate the contour mark; S4. The installation sequence of single-point conveying equipment should first install the rollers, and then install the rollers and other accessories; S5. After the idler rollers of the single-point conveying equipment are installed in place, install the horizontal chain first, and then install the cables to complete the installation of the single-point conveying equipment. 2. A self-unloading ship single-point conveying equipment installation method according to claim 1, characterized in that: in the step S1, the left-right deviation of the centerline of the single-point conveying equipment does not exceed ±5mm within a range of 30m. 3. A self-unloading ship single-point conveying equipment installation method according to claim 1, characterized in that: in the step S3, the delimitation operation of the contour mark is as follows: first, the first trough structure is reversed The measurement data of the height of the center of the top deck from the baseline position is the basis for the vertical direction, offset downwards and draw the actual contour line required for the installation of single-point rollers, and then offset and extend the contour line to the auxiliary angle steel on the port side , then extended to the column angle steel nearest to the midship on the left side, and punched with a sample punch as a permanent mark; then the contour line of the port side was shifted and extended to the column angle steel of 1800mm in the center of the starboard side, and punched with a sample Eye punch, as a permanent marker. 4. A self-unloading ship single-point conveying equipment installation method according to claim 1, characterized in that: in the step S3, the centerline of the single-point funnel needs to be extended to In terms of the opening structure of the funnel on the main deck, the center of the funnel needs to coincide with the center of the single-point conveying equipment, and the left-right deviation should not exceed ±2mm. 5. A self-unloading ship single-point conveying equipment installation method according to claim 1, characterized in that: in the step S4, before installing the single-point conveying equipment rollers, it is necessary to check the flatness of all single-point supporting pads For calibration work, the distance between the center of the block and the center line is 1300mm, and the deviation shall not exceed ±1.5mm. After the calibration of the single-point support block plane is completed, install the rollers. 6. A self-unloading ship single-point conveying equipment installation method according to claim 1, characterized in that: in the step S4, according to the contour line delineated in the berth stage, temporary adjustment pads and jacking bolts are used Adjust the installation height of the single-point roller. After leveling, the height difference between the left and right of the single-point roller on the same rib line shall not exceed ±2.5mm. 7. A self-unloading ship single-point conveying equipment installation method according to claim 1, characterized in that: in the step S4, before the single-point conveying equipment idler is assembled, first check the arrival of the self-unloading system equipment , The equipment is supplied in bulk, 10 pieces in total, 2 pieces are 11 meters long, 8 pieces are 9 meters long, and 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 according to the order of equipment hoisting, The installation starts from the stern, and after every two sections are hoisted in place, they are fixed with temporary supports, and then assembled section by section according to the principle from the stern to the bow. 8. The method for installing a self-unloading ship's single-point conveying equipment according to claim 1, characterized in that: in the step S4, the drive motor is installed on the left side of the idler roller, and the hydraulic device is installed on the right side of the idler roller. 9. A self-unloading ship single-point conveying equipment installation method according to claim 1, characterized in that: after the single-point conveying equipment is debugged, the epoxy pouring work is carried out, and the pouring is carried out according to the docking position of the equipment, so that Construction is carried out one by one from the stern to the bow.

Images