A ro-ro transportation method for ship unloaders

Abstract

The present invention relates to a ro-ro transportation method for a ship unloader, comprising the following steps: determining the maximum transportation height of the ship unloader on the transport ship according to the height limit of the passing water area; disassembling the front tie rod and the rear strut according to the maximum transportation height of the ship unloader, splitting the front tie rod into multiple sections, and lowering the tower towards the direction close to the front tie rod; binding and fixing the end of the rear strut connected to the rear girder and both ends of the tower; loading the ship unloader onto the ship. The beneficial effects of the present invention are that the ro-ro transportation method for the ship unloader meets the ro-ro transportation requirements of the ship unloader in the Yangtze River Basin, avoids secondary installation of large parts after disassembly, ensures the installation accuracy of the whole machine, the new ro-ro sea bundling and shipping process has good practicability and economy, ensures the stability and safety during the transportation process, reduces the risk of damage caused by shaking or collision; by disassembling the front tie rod and the rear strut and lowering the tower, the height of the ship unloader is reduced to enable it to smoothly pass through the height limit of the water area.

Description

Technical Field

[0001] The present invention relates to the technical field of transportation ro-ro operation construction, and particularly to a ro-ro transportation method for a ship unloader. Background Art

[0002] The transportation of ship unloaders usually adopts ro-ro transportation. The transportation of the whole machine requires the lashing of the structure, and its lashing process is extremely important and needs to meet the requirements of sea transportation. The lashing process form can effectively stabilize the structure of the ship unloader and effectively prevent the deformation of the structure of port machinery equipment.

[0003] Large port machinery equipment often has a height of more than 60 meters. Due to the limitation of the height of the transportation water area, most of the transportation schemes of ship unloaders adopt the method of disassembling the equipment and then assembling it on site after transporting it to the destination, which will seriously affect the installation accuracy of the equipment. With the innovation and improvement of technology, it is necessary to improve the transportation lashing process of ship unloaders, while reducing the overall height of the ship unloader and having a stable lashing effect. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a ro-ro transportation method for a ship unloader, which meets the ro-ro transportation requirements of the ship unloader, avoids the secondary installation of large parts being disassembled, and effectively ensures the installation accuracy of the whole machine.

[0005] The technical solution for the present invention to solve the above technical problems is as follows: A ro-ro transportation method for a ship unloader includes the following steps:

[0006] Determine the maximum transportation height of the ship unloader on the transport ship according to the height limitation of the passing water area;

[0007] Disassemble the front tie rod and the rear strut according to the maximum transportation height of the ship unloader. The front tie rod is disassembled into multiple sections, and the tower is laid down in the direction close to the front tie rod;

[0008] Lash and fix the end of the rear strut connected to the rear girder and both ends of the tower;

[0009] Load the ship unloader onto the ship.

[0010] The beneficial effects of the present invention are as follows: the roll-on / roll-off transportation method of the ship unloader meets the roll-on / roll-off transportation demand of the ship unloader in the Yangtze River Basin, avoids the secondary installation of large-scale disassembly, and effectively ensures the installation accuracy of the whole machine. The new roll-on / roll-off sea-binding shipping process has good practicality and economy, and also ensures the stability and safety during transportation, reducing the risk of damage caused by shaking or collision. The construction method is convenient for both installation and disassembly. The ship unloader no longer needs to be disassembled for secondary installation, which saves a lot of secondary installation costs economically. It can be directly rolled ashore, the sea binding is removed, and the whole machine is restored. The height of the ship unloader is lowered by disassembling the front pull rod and the rear support rod and laying down the tower, so that it can smoothly pass the height limit of the basin, avoiding transportation obstacles or safety problems caused by excessive height.

[0011] Based on the above technical solution, the present invention can also be improved as follows.

[0012] Further, in the step of determining the maximum transport height of the ship unloader on the transport ship according to the height limit of the passing watershed, the height limit of the passing watershed is equal to the sum of the maximum transport height of the ship unloader, the height of the roll-on / roll-off track and the minimum freeboard height.

[0013] The beneficial effect of adopting the above-mentioned further scheme is: by accurately calculating the sum of the basin height limit, the roll-on / roll-off track height and the minimum freeboard height, the maximum transportation height of the ship unloader is determined, which can ensure that the ship unloader will not be obstructed by excessive height during transportation, thereby improving the feasibility and safety of transportation, reducing the risks caused by excessive height during transportation, and realizing the roll-on / roll-off transportation of ship unloaders in the Yangtze River Basin.

[0014] Furthermore, before disassembling the front tie rod and the rear support rod, a crane is required to hoist the tower, and when the hoisting wire rope of the crane is just tightened, the front tie rod and the rear support rod are disassembled;

[0015] Before the rear support rod is disassembled, a wheelbarrow track needs to be laid along the rear beam.

[0016] The beneficial effects of adopting the above further scheme are: by setting up a crane to hoist the tower, and dismantling the front pull rod and the rear support rod when the hoisting wire rope of the crane is just tightened, the stability of the tower during the dismantling process can be ensured, thereby improving the safety of the dismantling work; before the rear support rod is dismantled, a wheelbarrow track is laid along the rear beam, and the wheelbarrow installed at the end of the rear beam is connected to the rear support rod, so that the rear support rod can move smoothly along the set track during the process of being lowered with the tower. The wheelbarrow runs on the track, which effectively limits the slippage and shaking of the tower during the lowering process, thereby ensuring the stability and accuracy of the tower lowering.

[0017] Further, the step of disassembling the front tie rod and the rear strut according to the maximum transportation height of the ship unloader and laying down the tower in the direction close to the front tie rod includes:

[0018] Determine the disassembly position and the number of disassembled segments of the front tie rod according to the maximum transportation height of the ship unloader and the height of the tower;

[0019] Disassemble the front tie rod and the rear strut;

[0020] After laying down the tower to a set height, fix the front tie rod.

[0021] The beneficial effects of adopting the above further solution are as follows: By determining the disassembly position and the number of disassembled segments of the front tie rod according to the maximum transportation height of the ship unloader and the height of the tower, it can be ensured that there will be no obstruction due to height overlimit during transportation, meeting the transportation requirements in the Yangtze River Basin, and it is also beneficial to the laying down of the tower and the restoration after transportation in place. This method improves the flexibility and efficiency of transportation, enabling the ship unloader and its related components to pass through the restricted space more smoothly; After disassembling the front tie rod and the rear strut, the tower can be laid down to a relatively low height, which helps in transportation in case of restricted site or low installation requirements; Through precise calculation and design, accidents during transportation, installation and use can be prevented, ensuring the safety of personnel and equipment.

[0022] Further, when the front tie rod is disassembled into two segments, the end portion of the front tie rod disassembled from the tower is connected to a preset lifting lug, and the front tie rod connected to the front girder is connected to the front girder through a bracket after being laid flat;

[0023] When the number of disassembled segments of the front tie rod is greater than two, the end portion of the front tie rod disassembled from the tower is connected to the preset lifting lug, and the relatively longer segment of the front tie rod is connected to the front girder through the bracket after being laid flat.

[0024] The beneficial effects of adopting the above further solution are as follows: By disassembling the front tie rod into different numbers of segments, it can flexibly adapt to various transportation conditions. When the height limit of the passing-through basin is extremely low, disassembling the front tie rod can ensure that the equipment can pass through smoothly, greatly improving the feasibility and flexibility of transportation; The disassembled front tie rod is connected to the girder through the preset lifting lug and the bracket, greatly simplifying the installation process.

[0025] Further, the step of disassembling the front tie rod and the rear strut includes:

[0026] Disassemble the front tie rod according to the disassembly position and the number of disassembled segments;

[0027] Dismantle the connection between the rear support rod and the rear beam;

[0028] A wheelbarrow is installed at the end of the rear support rod connected to the rear beam, and the wheelbarrow is used to support the hinge ear at the end of the rear support rod.

[0029] The beneficial effects of adopting the above-mentioned further scheme are: pre-designing and calculating the splitting position and the number of splitting sections to disassemble the front pull rod, making the disassembly process more orderly and efficient; by installing a wheelbarrow at the end where the rear support rod is connected to the rear beam, the rear support rod can be effectively supported to prevent it from colliding with the upper surface of the beam and deforming during the tower lowering process, thereby protecting the integrity of the equipment; the installation of the wheelbarrow not only provides support, but also allows the rear support rod to move along the wheelbarrow track as the tower is lowered, making the operation more flexible.

[0030] Further, after lowering the tower to a set height, the step of fixing the front tie rod includes:

[0031] The crane lowers the tower until the end of the front tie rod connected to the tower is close to the preset lifting lug position on the front beam, and the end of the front tie rod facing away from the tower is fixedly connected to the preset lifting lug;

[0032] Lower a relatively long section of the front pull rod by another crane or a hand chain hoist, place it on the plane of the front beam and connect it to the front beam;

[0033] The rear support rod slides along the pre-laid wheelbarrow track as the tower is laid down.

[0034] The beneficial effect of adopting the above-mentioned further scheme is as follows: after the tower is laid down, the front pull rod of the ship unloader is used to support it to the position of the preset lifting lug, which just meets the required laying down height requirement, and there is no need to measure the height after laying down again, making full use of the original structure, and no longer needing to weld the ear plate; this lifting lug is the lifting lug when the beam is installed, and the setting of the lifting lug also takes into account the fixed position of the tower when it is half-lying; by arranging multiple brackets on the front beam to support the front pull rod, and connecting the front pull rod to the front beam, the stability and safety of the structure are enhanced; the rear support rod slides along the pre-laid wheelbarrow track as the tower is laid down, and the setting of the wheelbarrow improves the flexibility and stability of movement.

[0035] Further, in the step of tying and fixing the end of the rear support rod connected to the rear beam and the two ends of the tower, when the tower is lowered to the set height, the wheelbarrow is tied and fixed to the closest lifting lug using a steel wire rope;

[0036] After the tower is laid down to the set height, the two sides of the tower are respectively tied and fixed by the steel wire ropes, and the bottom of each side of the tower is fixed on the crossbeam by a pair of cross - arranged steel wire ropes.

[0037] The beneficial effects of adopting the above - mentioned further solution are as follows: By tying and fixing the unicycle cart to the closest lifting lug with the steel wire rope, it can ensure that the unicycle cart will not move due to external forces after the tower is laid down to the set height, thus maintaining the stability during the process of laying down the tower; By tying and fixing the two sides of the tower with the steel wire ropes respectively, it can significantly improve the overall stability of the tower and prevent the tower from tilting or collapsing during transportation. At the same time, the tying and fixing method of the steel wire rope is simple and easy to implement, and has high reliability. Through reasonable tying and fixing, it can ensure the safety of the tower during transportation and avoid accidents.

[0038] Further, after the ship unloader is rolled onto the ship and in place, it is supported and fixed on the deck;

[0039] The steps of supporting and fixing the ship unloader include:

[0040] Install the upper joint at the position corresponding to the center of gravity of the upper part of the tower after it is laid down on the front girder;

[0041] After selecting the lower joint position through the upper joint position, install the lower joint on the sea - side leg;

[0042] Install a diagonal brace between the upper joint and the lower joint.

[0043] The beneficial effects of adopting the above - mentioned further solution are as follows: Installing the upper joint at the position corresponding to the center of gravity of the upper part of the tower after it is laid down on the front girder ensures that the support point is at the center of gravity of the upper part of the ship unloader, thus maximizing the stability and safety of the support, and helping to maintain the balance and stability of the overall structure when the ship unloader is rolled onto the ship and in place.

[0044] Further, a reinforcing plate is provided at the position where the front girder is connected to the upper joint;

[0045] The included angle between the upper joint and the plane of the front girder is not greater than 45 degrees.

[0046] The beneficial effects of adopting the above - mentioned further solution are as follows: By selecting a reinforcing plate to strengthen the structure at the butt joint position, it can meet the requirement that when the tower is fixed on the front girder in a semi - lying form after being lowered, the center of gravity of the tower moves forward, and it can be supported near the front girder without deformation; By selecting the lower joint position through the upper joint position, the best support angle is determined through calculation and drawing lofting, improving the support strength. Brief Description of the Drawings

[0047] Figure 1 Schematic diagram of the normal position of the tower crane in an embodiment of the present invention;

[0048] Figure 2 Schematic diagram of the tower crane in the down state during transportation in an embodiment of the present invention;

[0049] Figure 3 Schematic diagram of the lashing of the tower crane in an embodiment of the present invention;

[0050] Figure 4 Schematic diagram of the installation of the diagonal brace in an embodiment of the present invention.

[0051] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0052] 1. Front tie rod; 2. Rear strut; 3. Tower crane; 4. Front girder; 5. Rear girder; 6. Unicycle; 7. Lifting lug; 8. Bracket; 9. Connecting plate; 10. Steel wire rope; 11. Cross beam; 12. Upper joint; 13. Lower joint; 14. Diagonal brace; 31. Fixed section; 32. Folding section. Detailed implementation manners

[0053] The principles and features of the present invention will be described below. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0054] The present invention provides a ro-ro transportation method for a ship unloader. Taking the ro-ro transportation of a ship unloader in the Yangtze River Basin as an example, the structural diagram when the tower crane is in the normal position is as Figure 1 shown, and the structural diagram when the tower crane is in the down state during transportation is as Figure 2 shown. The specific steps are as follows:

[0055] S1: Determine the maximum transportation height of the ship unloader on the transport ship according to the height limit of the passing basin.

[0056] S2: Disassemble the front tie rod 1 and the rear strut 2 according to the maximum transportation height of the ship unloader. The front tie rod 1 is disassembled into multiple sections, and the tower crane 3 is laid down in the direction close to the front tie rod 1.

[0057] Due to the height limit of the passing basin, the ship unloader cannot be shipped as a whole, and the height of the ship unloader needs to be reduced before transportation. The conventional transportation method is to disassemble the ship unloader into several integral modules for shipping and then perform secondary installation after transportation. Or during ro-ro transportation, considering its center of gravity, most of the front girder 4 of the ship unloader is raised for ro-ro shipping. In this embodiment, after disassembling the front tie rod 1 and the rear strut 2, the tower crane 3 is laid down in the direction close to the front tie rod 1, and the girder is laid flat without inclination.

[0058] S3: Bind and fix the end of the rear support rod 2 connected to the rear beam 5 and the two ends of the tower 3.

[0059] S4: Ship unloader loading.

[0060] This roll-on / roll-off transportation method for ship unloaders meets the roll-on / roll-off transportation needs of ship unloaders in the Yangtze River Basin, avoids the secondary installation of large-scale disassembly, and effectively ensures the installation accuracy of the whole machine. The new roll-on / roll-off sea-binding shipping process has good practicality and economy, and also ensures stability and safety during transportation, reducing the risk of damage caused by shaking or collision. The construction method is convenient for both installation and disassembly. The ship unloader no longer needs to be disassembled for secondary installation, which saves a lot of secondary installation costs economically. It can be directly rolled ashore, the sea binding is removed, and the whole machine is restored. The height of the ship unloader is lowered by disassembling the front tie rod 1 and the rear support rod 2 and laying down the tower 3, so that it can smoothly pass the height limit of the basin, avoiding transportation obstacles or safety problems caused by excessive height.

[0061] In step S1, the height limit through the basin is equal to the sum of the maximum transport height of the ship unloader, the height of the roll-on / roll-off track, and the minimum freeboard height. Specifically, the height of the ship unloader is 56 meters, the height limit of the bridge in the Yangtze River Basin is 50m, and the height of the roll-on / roll-off track is 400mm, that is, the overall height of the ship unloader on the transport ship is 56.4. When the transport ship is fully ballasted, the minimum freeboard height is 1.4 meters, where the minimum freeboard height refers to the height from the water surface to the ship deck. Therefore, under normal circumstances, the maximum distance from the water surface to the top of the ship unloader is 57.8 meters, which exceeds the height limit of the bridge in the Yangtze River Basin. The maximum transport height of the ship unloader = the height limit of the bridge in the Yangtze River Basin - the height of the roll-on / roll-off track - the minimum freeboard height = 48.2m. Therefore, the transport height of the ship unloader can be taken within a range less than the maximum transport height of the ship unloader.

[0062] In this embodiment, the maximum transport height of the ship unloader is determined by accurately calculating the sum of the basin height limit, the roll-on / roll-off track height and the minimum freeboard height, which can ensure that the ship unloader will not be obstructed by excessive height during transportation, thereby improving the feasibility and safety of transportation, reducing the risks caused by excessive height during transportation, and realizing the roll-on / roll-off transportation of ship unloaders in the Yangtze River Basin.

[0063] In this embodiment, before disassembling the front tie rod 1 and the rear strut 2, a crane needs to be set up to hoist the tower 3, and a suitable position needs to be selected to hoist the tower 3. When the hoisting steel wire rope of the crane is just tightened, the front tie rod 1 and the rear strut 2 are disassembled. At the same time, before disassembling the rear strut 2, a unicycle track needs to be laid along the rear girder 5. Subsequently, a unicycle 6 is installed at the end where the rear strut 2 is connected to the rear girder 5, so that during the process of the rear strut 2 being laid down with the tower 3, the unicycle 6 travels in the set track, which can ensure that the entire tower 3 does not slip excessively during the lowering process and can avoid swaying left and right, preventing deformation from occurring.

[0064] The unicycle track can be made of flat steel and welded to the rear girder 5.

[0065] By setting up a crane to hoist the tower 3 and disassembling the front tie rod 1 and the rear strut 2 when the hoisting steel wire rope of the crane is just tightened, the stability of the tower 3 during the disassembly process can be ensured, thereby improving the safety of the disassembly work; before disassembling the rear strut 2, a unicycle track is laid along the rear girder 5, and in cooperation with the unicycle 6 installed at the end where the rear strut 2 is connected to the rear girder 5, the rear strut 2 can move smoothly along the set track during the process of being laid down with the tower 3. The unicycle 6 travels in the track, effectively restricting the slip and sway of the tower 3 during the lowering process, thereby ensuring the smoothness and accuracy of the lowering of the tower 3.

[0066] Specifically, step S2 includes:

[0067] S21: Determine the splitting position and the number of split segments of the front tie rod 1 according to the maximum transportation height of the ship unloader and the height of the tower 3.

[0068] In this embodiment, after obtaining the maximum transportation height of the ship unloader according to the height limit of the Yangtze River Basin, the transportation height of the ship unloader can be taken within the range less than the maximum transportation height of the ship unloader. The tower 3 includes: a fixed section 31 vertically connected to the girder and a laid-down section 32, where the fixed section 31 is hinged to the laid-down section 32. When the tower 3 is laid down, the laid-down part is the laid-down section 32 of the tower 3. Therefore, after obtaining the transportation height of the ship unloader by taking a value within the maximum transportation height of the ship unloader, and based on the height of the fixed section 31 and the height from the girder to the ship deck, the height that the laid-down section 32 needs to reach after being laid down can be obtained, that is, the set height that the tower 3 needs to be laid down. Based on this height, the splitting position and the number of split segments of the front tie rod 1 are determined through trigonometric functions.

[0069] Among them, when the front tie rod 1 is split into two segments, the split end of the front tie rod 1 connected to the tower 3 is connected to a preset hoisting lug 7, and the front tie rod 1 connected to the front girder 4 is laid flat and connected to the front girder 4 through a bracket 8. During the transportation of the ship unloader, the front tie rod 1 is mostly split into two segments.

[0070] When the number of segments of the front tie rod 1 divided is greater than two, the divided end of the front tie rod 1 connected to the tower 3 is connected to the preset lifting lug 7, and the remaining relatively long section of the front tie rod 1 is laid flat and connected to the front beam 4 through the bracket 8; that is, when the number of segments of the front tie rod 1 divided is greater than two, the connection method of the front tie rod 1 connected to the tower 3 is the same, and the remaining front tie rod 1 is gradually laid flat as a whole and connected to the front beam 4 through the bracket 8. When the height limit required to pass through the basin is particularly low, the front tie rod 1 can be divided into three or more sections, which is not limited here.

[0071] By splitting the front tie rod 1 into different sections, it can flexibly adapt to various transportation conditions. When the height limit of the watershed is particularly low, splitting the front tie rod 1 can ensure that the equipment can pass smoothly, greatly improving the feasibility and flexibility of transportation; the split front tie rod 1 is connected to the beam through the preset lifting lugs 7 and the bracket 8, which greatly simplifies the installation process.

[0072] In this embodiment, the length of the front tie rod 1 is designed to be 10 meters. The front tie rod 1 is split into two sections. The split position should be such that when the tower 3 is laid down, the front tie rod 1 is just fixed to the ship unloader hoisting lug 7. After the front tie rod 1 is fixed to the ship unloader hoisting lug 7, the maximum height of the entire ship unloader is 46.5 meters. By calculating and adding the deck track and the minimum freeboard height of the transport ship, the maximum height from the water surface to the top of the ship unloader is 48.3 meters. It fully meets the height limit requirements of bridges passing through the Yangtze River Basin. Construction personnel only need to fix the front tie rod 1 and the beam in place without re-measuring its height dimensions.

[0073] S22: Disassemble the front tie rod 1 and the rear support rod 2.

[0074] Specifically, step S22 includes:

[0075] The front tie rod 1 is disassembled according to the splitting position and the number of split sections. In the present embodiment, the front tie rod 1 is split into two sections at the splitting position. The front tie rod 1 with a relatively shorter length is hinged to the upper end of the tower 3, and this end is not disassembled; the end of the front tie rod 1 with a relatively longer length that is away from the splitting position is connected to the front beam 4, and this end is not disassembled.

[0076] The connection between the rear support rod 2 and the rear beam 5 is disassembled, wherein the end of the rear support rod 2 connected to the tower 3 is not disassembled.

[0077] Install a unicycle cart 6 at the end where the rear strut 2 is connected to the rear girder 5, and support the hinge ear at the end of the rear strut 2 through the unicycle cart 6. The unicycle cart 6 is directly installed at the end where the rear strut 2 is hinged to the rear girder 5, and is an inwards concave unicycle cart 6 that mates with the flat steel track, so that the rear strut 2 can move along the unicycle cart track as the tower 3 is laid down. The installation of the cart structure can effectively protect the tail end of the rear strut 2 and prevent the rear strut 2 from colliding with the upper surface of the girder and deforming during the process of laying down the tower 3.

[0078] In the above steps, the front tie rod 1 is disassembled by pre-designing and calculating the disassembly positions and the number of disassembly segments, making the disassembly process more orderly and efficient; by installing the unicycle cart 6 at the end where the rear strut 2 is connected to the rear girder 5, the rear strut 2 can be effectively supported to prevent it from colliding with the upper surface of the girder and deforming during the process of laying down the tower 3, thus protecting the integrity of the equipment; the installation of the unicycle cart 6 not only provides a supporting function, but also enables the rear strut 2 to move along the unicycle cart track as the tower 3 is laid down, making the operation more flexible.

[0079] S23: After the tower 3 is laid down to the set height, fix the front tie rod 1.

[0080] Specifically, step S23 includes:

[0081] After the front tie rod 1 is disassembled, the crane starts to slowly lower the tower 3 until the end of the front tie rod 1 connected to the tower 3 approaches the position of the preset lifting lug 7 on the front girder 4, and fixedly connects the end of the front tie rod 1 facing away from the tower 3 to the preset lifting lug 7. The position of the lifting lug 7 on the front girder 4 needs to be preset. Specifically, during the preliminary design, according to the transportation height of the ship unloader, the height of the tower 3, and the disassembly position of the front tie rod 1, it is determined how to evenly distribute the lifting lugs 7 on the girder so that after the tower 3 is laid down, the end of the front tie rod 1 facing away from the tower 3 is exactly connected to the preset lifting lug 7, and the tower 3 just meets the required laid-down height requirement, that is, the position of the lifting lug 7 is obtained by reverse simulation through drawings, and the lifting lugs 7 are evenly distributed along the length direction of the girder. In this embodiment, two lifting lugs 7 are provided on each of the front girder 4 and the rear girder 5, and the lifting lugs 7 on the front girder 4 are symmetrically arranged with the lifting lugs 7 on the rear girder 5. The end of the front tie rod 1 connected to the front girder 4 can be fixed by a pin clip, and the end of the front tie rod 1 connected to the tower 3 is connected to the lifting lug 7 on the front girder 4 closest to the tower 3.

[0082] In this embodiment, after the tower 3 is laid down, the front tie rod 1 of the ship unloader is used to support it to the position of the preset lifting lug 7, just meeting the required laid-down height requirement, without measuring its laid-down height again, making full use of the original structure and no longer welding the ear plates; this lug is the lifting lug 7 during the installation of the girder, and the setting of the lug also takes into account the fixed position when the tower 3 is semi-lying.

[0083] Lower a relatively long front tie rod 1 by means of another crane or a chain block. At the same time, when disassembling the front tie rod 1, adjacent front tie rods 1 are connected by a connecting plate 9. After the front tie rod 1 is disassembled, the connecting plate 9 is connected to the end of the relatively long front tie rod 1. Therefore, the connecting plate 9 is lowered together with the end of the relatively long front tie rod 1 and is connected to the front girder 4 after being placed on the plane of the front girder 4. Among them, the connecting plate 9 and the end of the front tie rod 1 connected to the connecting plate 9 are laid flat to contact the end face of the front girder 4, and the end of the connecting plate 9 connected to the front girder 4 is welded and fixed to the front girder 4 or connected to an additionally provided lifting lug through a pin shaft; in addition, a plurality of brackets 8 are vertically installed at intervals on the front girder 4 to support the front tie rod 1 and connect the front tie rod 1 to the front girder 4.

[0084] The rear strut 2 slides along the pre-laid monorail trolley track as the tower 3 is laid down. When the tower 3 is laid down to the set height, the end of the rear strut 2 provided with the monorail trolley 6 stops moving.

[0085] In the above steps, by arranging a plurality of brackets 8 on the front girder 4 to support the front tie rod 1 and connecting the front tie rod 1 to the front girder 4, the stability and safety of the structure are enhanced; the rear strut 2 slides along the pre-laid monorail trolley track as the tower 3 is laid down, and the setting of the monorail trolley 6 improves the flexibility and stability of the movement.

[0086] Specifically, as Figure 3 shown, step S3 includes:

[0087] After the tower 3 is laid down to the set height, use a steel wire rope 10 to tie and fix the monorail trolley 6 to the closest lifting lug 7. One end of the steel wire rope 10 is fixed on the monorail trolley 6, and the other end of the steel wire rope 10 is fixed on the closest lifting lug 7, making full use of the preset lifting lug 7; and use the steel wire rope 10 to tie and fix both sides of the tower 3 respectively. The bottom of each side of the tower 3 is fixed on the cross beam 11 by a pair of crossed steel wire ropes 10. One end of a pair of steel wire ropes 10 is commonly fixed at one end where the fixed section 31 is connected to the laid-down section 32. After a pair of steel wire ropes 10 are crossed, they are respectively fixed at different positions on the cross beam 11, and the steel wire rope 10 plays a role in stabilizing the tower 3.

[0088] In the above steps, the unicycle 6 is tied and fixed to the closest lifting lug 7 through the steel wire rope 10, which can ensure that the unicycle 6 will not move due to external forces after the tower 3 is laid down to the set height, thus maintaining the stability during the laying-down process of the tower 3; using the steel wire rope 10 to tie and fix both sides of the tower 3 respectively can significantly improve the overall stability of the tower 3 and prevent the tower 3 from tilting or collapsing during transportation. At the same time, the tying and fixing method of the steel wire rope 10 is simple and easy to implement, and has high reliability. Through reasonable tying and fixing, the safety of the tower 3 during transportation can be ensured, and accidents can be avoided.

[0089] In this embodiment, after the ship unloader is loaded onto the ship and rolled into place, it is necessary to support and fix the ship unloader on the deck. Among them, as Figure 4 shown, the steps for supporting and fixing the ship unloader specifically include:

[0090] Install the upper joint 12 at the position corresponding to the center of gravity of the upper part of the tower 3 after it is laid down on the front girder 4, where the center of gravity position refers to the center of gravity position of the upper part of the girder when the tower 3 is laid down to the set height. In this embodiment, the center of gravity position exactly falls at a position 10.5 meters from the end of the front girder 4.

[0091] After selecting the position of the lower joint 13 through the position of the upper joint 12, install the lower joint 13 on the sea side leg; specifically, select the position of the lower joint 13 through the position of the upper joint 12, so that the best support angle of the girder satisfies that the angle between the upper joint 12 and the plane of the girder is not greater than 45 degrees, and then determine the position of the diagonal brace 14 through calculation and drawing lofting. In this embodiment, the angle between the upper joint 12 and the plane of the front girder 4 is set to 45 degrees.

[0092] In this embodiment, the upper joint 12 and the lower joint 13 have the same structure, only the orientation positions are different. The following takes the upper joint 12 as an example for description, which specifically includes: a mounting plate and a joint, where the mounting plate is installed on the lower end face of the front girder 4, the joint is in a barrel shape, the axis direction of the joint forms an angle of 45 degrees with the plane of the front girder 4, and a plurality of rib plates are provided between the outer wall of the joint and the mounting plate.

[0093] Install the diagonal brace 14 between the upper joint 12 and the lower joint 13. Specifically, during installation, the diagonal brace 14 is in the form of on-site welding. After the upper joint 12 and the lower joint 13 are docked with the bolt holes reserved on the ship unloader girder, then the diagonal brace 14 is respectively docked with the upper joint 12 and the lower joint 13 and then welded, which is convenient for alignment. Among them, the diagonal brace 14 can be but is not limited to a round steel pipe.

[0094] In the above steps, the upper joint 12 is installed on the front beam 4 at the position corresponding to the center of gravity of the upper component after the tower 3 is laid down, ensuring that the support point is located at the center of gravity of the upper component of the ship unloader, thereby maximizing the stability and safety of the support, and helping to maintain the balance and stability of the overall structure of the ship unloader when it is rolled into place after loading; the position of the lower joint 13 is selected according to the position of the upper joint 12, so as to determine the optimal support angle through calculation and drawing layout, thereby improving the support strength.

[0095] In a further solution, a reinforcing plate is provided at the position where the front beam 4 is connected to the upper joint 12. In this embodiment, at a position 10.5 meters away from the end of the front beam 4, a reinforcing plate with a thickness of 30mm, a length of 2m, and a width of 1380mm is selected, and a variable-section thin-thick plate is butt-jointed with the bottom plate of the front beam 4 with a width of 980mm on both sides and a thickness of 16mm. At this time, the edge of the thick plate is 220mm away from the web. This reinforcing plate is the position connected to the upper joint 12, and the upper joint 12 is drilled for drilling. By selecting a reinforcing plate, the structure of the butt joint position is reinforced to meet the requirement that when the tower 3 is lowered and fixed on the front beam 4 in a semi-lying form, the center of gravity of the tower 3 moves forward at this time, and is supported close to the front beam 4 without deformation.

[0096] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A ship unloader roll-on / roll-off transportation method, characterized in that: The following steps are involved: The maximum transport height of the ship unloader on the transport ship is determined according to the height limit of the watershed; the maximum transport height = the height limit of the watershed - the height of the roll-on / roll-off track - the minimum freeboard height; Determine the splitting position and the number of split sections of the front tie rod (1) according to the maximum transport height of the ship unloader and the height of the tower (3); disassemble the front tie rod (1) and the rear support rod (2); lower the tower (3) in a direction close to the front tie rod (1); lay a wheelbarrow track along the rear beam (5), and install a wheelbarrow (6) at the end of the rear support rod (2) so that the rear support rod (2) slides along the track when the tower (3) is lowered; After the tower (3) reaches a set height, the front tie rod (1) is fixed, and the split ends of the front tie rod (1) are fixed to corresponding lifting ears (7), and a plurality of lifting ears (7) are evenly distributed along the length direction of the front beam (4) and the rear beam (5), and the preset positions of the plurality of lifting ears (7) are determined according to the transport height of the ship unloader, the height of the tower (3), and the split position of the front tie rod (1); and the ends of the rear support rod (2) connected to the rear beam (5) are tied and fixed, and the two sides of the tower (3) are tied and fixed using cross wire ropes (10), and the wire ropes on each side are diagonally fixed to the cross beam (11); The ship unloader loads the ship; After the ship unloader is loaded and rolled into place, a diagonal brace (14) is installed at the center of gravity of the front beam (4) to stabilize the upper structure; When the front tie rod (1) is split into two sections, the split end of the front tie rod (1) connected to the tower (3) is connected to a preset lifting lug (7), and the front tie rod (1) connected to the front beam (4) is laid flat and connected to the front beam (4) via a bracket (8); When the number of sections into which the front tie rod (1) is split is greater than two, the split end of the front tie rod (1) connected to the tower (3) is connected to the preset lifting lug (7), and the relatively longer section of the front tie rod (1) is laid flat and connected to the front beam (4) via the bracket (8).

2. A ship unloader roll-on / roll-off transportation method according to claim 1, characterized in that: Before disassembling the front pull rod (1) and the rear support rod (2), a crane is required to hoist the tower (3). When the hoisting wire rope of the crane is just tightened, the front pull rod (1) and the rear support rod (2) are disassembled; Before the rear support rod (2) is disassembled, a wheelbarrow (6) track needs to be laid along the rear beam (5).

3. A ship unloader roll-on / roll-off transportation method according to claim 1, characterized in that: The step of disassembling the front pull rod (1) and the rear support rod (2) comprises: Disassembling the front pull rod (1) according to the splitting position and the number of split sections; Disassembling the connection between the rear support rod (2) and the rear beam (5); A wheelbarrow (6) is installed at the end of the rear support rod (2) connected to the rear beam (5), and the wheelbarrow (6) is used to support the hinge ear at the end of the rear support rod (2).

4. A ship unloader roll-on / roll-off transportation method according to claim 1, characterized in that: After the tower (3) is laid down to a set height, the step of fixing the front pull rod (1) comprises: The crane lowers the tower (3) until the end of the front tie rod (1) connected to the tower (3) is close to the preset lifting lug (7) on the front beam (4), and the end of the front tie rod (1) facing away from the tower (3) is fixedly connected to the preset lifting lug (7); A relatively long section of the front pull rod (1) is lowered by another crane or a hand chain hoist, and is placed on the plane of the front beam (4) and connected to the front beam (4); The rear support rod (2) slides along the pre-laid track of the wheelbarrow (6) as the tower (3) is laid down.

5. A ship unloader roll-on / roll-off transportation method according to claim 1, characterized in that: In the step of tying and fixing the end portion of the rear support rod (2) connected to the rear beam (5) and the two ends of the tower (3), after the tower (3) is lowered to the set height, the wheelbarrow (6) is tied and fixed to the closest lifting lug (7) using a steel wire rope (10); When the tower (3) is laid down to a set height, the steel wire ropes (10) are used to tie and fix the two sides of the tower (3) respectively, and the bottom of each side of the tower (3) is fixed to the crossbeam (11) by a pair of cross-arranged steel wire ropes (10).

6. A ship unloader roll-on / roll-off transportation method according to claim 1, characterized in that: After the ship unloader is loaded and rolled onto the ship, the ship unloader is supported and fixed on the deck; The step of supporting and fixing the ship unloader comprises: An upper joint (12) is installed on the front beam (4) at a position corresponding to the center of gravity of the upper rear component of the tower (3) after it is laid down; After selecting the position of the lower joint (13) through the position of the upper joint (12), the lower joint (13) is installed on the sea side door leg; A diagonal brace (14) is installed between the upper joint (12) and the lower joint (13).

7. A ship unloader roll-on / roll-off transportation method according to claim 6, characterized in that: A reinforcing plate is provided at the position where the front beam (4) is connected to the upper joint (12); The angle between the upper joint (12) and the plane of the front beam (4) is no greater than 45 degrees.

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