Spliced intelligent environment-friendly dredger land and water transfer method
By combining airbags, tugboats, and winches with small gantry cranes, the high cost and difficulty of transferring assembled dredging vessels between land and water were solved, achieving efficient and low-cost vessel transfer and ensuring smooth project delivery.
Patent Information
- Application Number
- CN202511791294.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-01
- Publication Date
- 2026-01-09
AI Technical Summary
The traditional method of transferring prefabricated dredging vessels by land and water is costly, difficult to construct, and the use of large gantry cranes for lifting results in long-term resource occupation and affects the project delivery cycle.
By employing a combination of airbags, tugboats, winches, and small gantry cranes, the modular intelligent and environmentally friendly dredging vessel can be transferred between land and water through pre-launch preparation, launching operations, and slipway operations. These operations include bow rigging inspection, airbag deployment, vessel descent, mooring tugboats, and slipway operation.
This reduces the difficulty and cost of transferring ships between land and water, avoids the use of large gantry cranes and floating cranes, and ensures that the overall project delivery cycle is not affected.
Smart Images
Figure CN121291725A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of ship water-land transfer, in particular to a water-land transfer method of a split type intelligent environmental protection dredging ship. BACKGROUND
[0002] With the improvement of urban water environment management demand, the technical innovation of dredging ship becomes the core of realizing efficient and environmental protection operation. The split type intelligent environmental protection dredging ship needs to be landed after being launched due to its particularity, and is shipped after being disassembled as a whole.
[0003] The traditional small dredging ship usually realizes water-land transfer by using large gantry crane lifting or large floating crane integral lifting. The use of floating crane operation is usually restricted by the floating crane period and has high cost, and the operation cost is uncontrollable. In addition, the floating crane construction also causes the ship to be disassembled for a long time to occupy the 500T gantry crane in the dock, which is not conducive to the subsequent operation, thereby affecting the overall delivery of the project.
[0004] Through the analysis of the structure of the split type dredging ship and the application of the air bag in the launching and landing of the ship, an efficient water-land transfer technical solution is provided to reduce the operation cost of launching and landing the ship. SUMMARY
[0005] The technical problem to be solved by the present application is to provide a water-land transfer method of a split type intelligent environmental protection dredging ship, which can solve the problems of high cost of using large floating crane integral lifting, high difficulty of integral hoisting construction, long occupation of large gantry crane caused by large gantry crane lifting, and influence on the overall delivery period of the project in the prior art.
[0006] To solve the above technical problems, the technical scheme of the present application is as follows: including launching operation and landing operation; The launching operation comprises the following steps: S1.1, preparation before launching: after the split type intelligent environmental protection dredging ship is completed on the shipbuilding berth, the project integrity is checked, the bow towing rigging is checked, the bow and stern ballast water is adjusted through floating state calculation to reduce the bow and stern draft difference and ensure the stability of the ship floating state; S1.2, air bag and towing device arrangement: the ship sliding force is calculated, two lifting lugs are installed at the bow of the ship, and two steel wires are arranged for towing, and the towing device winch, pulley block and air bag are arranged; S1.3, ship sliding: the air bag is inflated to lift, the support at the bottom of the ship is removed, the winch and the air bag are used to slide the ship to the end of the shipbuilding berth at the low tide stage, and the position is 3M outside the shipbuilding berth gate; S1.4, the towing of the ship, launching: the stern of the ship is tied with the cable of the tugboat, which is used for stern traction, and the tugboat will tow the ship away from the shipbuilding berth at high tide stage. The steel wire rope is cut off at the same time to avoid the deviation of the ship body when it slides down; S1.5, the wharf mooring: after the ship is stabilized, the tugboat is alongside the ship, and the ship is towed to the designated position to complete the wharf mooring; The shipbuilding process on the shipbuilding berth includes the following steps: S2.1, preparation before the shipbuilding on the shipbuilding berth: after the ship is debugged on the wharf, the steel pile is removed in advance, the draft of the stern is lowered, the draft of the ship is adjusted, and the shipbuilding gate is lifted off; S2.2, arrangement of tooling, air bag and winch: at the end of the shipbuilding berth, the air bag is pre-buried with sandbags, the berthing tooling, cable guide and scale tooling are arranged at the end of the shipbuilding berth, and the winch is arranged above the shipbuilding berth; S2.3, mooring of the ship at the end of the shipbuilding berth: the upward traction of the ship is calculated theoretically, one high polymer cable is moored on each side of the ship, and the cable piapa head is tied to the double-column mooring bitt respectively, which is used for stern traction. The tugboat is alongside the right side of the ship, and the ship is sent to the end of the shipbuilding berth 12m away from the shipbuilding gate at the advantage of high tide water depth. The stern of the ship faces the direction of the shipbuilding berth, the stern is towed to the berthing tooling, and the mooring of the stern cable and the left side cable is completed. After that, the tugboat lifts the bow, and the right side cable bitt is tied with the gantry crane stopper; S2.4, moving the ship to the shipbuilding gate: after the mooring of the stern cable and the left side cable is completed, the ship is moved to the shipbuilding gate with the winch and the 200T gantry crane. The stern is moved to the side of the shipbuilding gate 10-16m away and stopped, and the ship is moored and fixed; S2.5, moving the ship upward: at the ebb tide stage, when the stern air bag is out of the water, the air bag is inflated, the winch pulls the ship upward, the left and right side cables are unmoored, and the ship is separated from the tidal area. The ship is pulled forward to lift off the berthing tooling to avoid interfering with the air bag inflation of the ship bottom; S2.6, replacing the support pier at the bottom of the ship: after the ship is pulled to the designated position by the winch, the shipbuilding gate is closed, the air bag is inflated and lifted, the support pier is placed at the bottom of the ship, the air bag is deflated and removed, and the ship is disassembled and shipped.
[0007] Further, in step S1.2, the shipbuilding berth is cleaned, the mud in the cement area is cleaned, and the water depth of the shipbuilding area is measured, and the shipbuilding gate is lifted off at the same time.
[0008] Further, in step S1.4, the distance between the tugboat and the ship is more than 80m to prevent the ship from colliding with the tugboat due to inertia after the hook is released. A mooring boat is prepared in advance, which is used to tow away the air bag if the air bag is not separated after launching.
[0009] Further, in the step S1.5, the cable rope uses a high molecular polyethylene fiber cable with a diameter of greater than or equal to 44 mm, the cable rope is regularly inspected with the bitt, the safety factor of the breaking tension of the cable rope is greater than or equal to 3 times, the bearing capacity of the bitt of the wharf satisfies 1000 kN; before the cable is tied, the cable tying area is checked, and if there is a fast mouth or an acute angle, a protective material is installed to wrap the angle after the cable is tied, the protective material is a round pipe with a diameter of 89*13-3000; when the cable is tied, the guide cable hole near the bitt needs to be crossed first; the angle between the bow and stern wrapping and the wharf is controlled to be 30-45 degrees, so that all the cable forces in a single direction are uniform; and a rubber is used to prevent abrasion at the contact position between the cable and the edge of the wharf.
[0010] Further, in the step S2.2, the sundries and silt on the berth are cleaned, and the water depth of the berth area is scanned; the berthing tool comprises a counterweight and a vertical rod, the vertical rod is fixed to the side of the counterweight, an angle steel is arranged between the vertical rod and the counterweight in an inclined mode, and the bottom of the vertical rod is fixed to the counterweight through an elbow plate.
[0011] The advantage of the present application is that the air bag is combined with the tug, the winch and the small gantry crane to realize the launching and the moving onto the berth of the ship, the difficulty of the water-land transfer operation of the ship is reduced, the operation is more efficient, the use of the large gantry crane and the large floating crane is avoided, the operation cost is reduced, and the overall delivery cycle of the project is ensured not to be affected. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a plan view of the berth arrangement before the launching of the ship of the present application; Figure 2 It is a side view of the in-situ jacking before the launching of the ship of the present application; Figure 3 It is a side view of the sliding to the end of the berth during the launching operation of the ship of the present application; Figure 4 It is a plan view of the stern bitt and the tug connection during the launching of the ship of the present application; Figure 5 It is a plan view of the berth arrangement before the moving onto the berth of the ship of the present application; Figure 6 It is a structural schematic view of the berthing tool of the present application; Figure 7 It is a plan view of the distance of 12 m between the ship and the gate of the berth of the present application; Figure 8 It is a side view of the distance of 12 m between the ship and the gate of the berth of the present application; Figure 9 It is a plan view of the moving of the ship from the end of the berth to the side of the gate of the berth of the present application; Figure 10 It is a side view of the moving of the ship from the end of the berth to the side of the gate of the berth of the present application; Figure 11Figure 1 is a plan view of the air bag inflation of the ship of the present application in the ebb tide stage; Figure 12 Figure 4 is a side view of the ship of the present application being pulled to the building berth by the winch. DETAILED DESCRIPTION
[0013] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and specific embodiments. The following embodiments can make the skilled in the art more fully understand the present application, but the present application is not limited in the scope of the embodiments.
[0014] The deep water intelligent environmental protection cutter suction dredger is about 960T, 83 meters long, 12 meters wide, 2.9 meters high, and the ship launching ramp water end is 85 elevation-1.6m (converted to the actual height of +0.4m in the local area).
[0015] The specific embodiment adopts the following technical scheme: including launching operation and building berth operation; The launching operation includes the following steps: S1.1, preparation before launching: after the assembled intelligent environmental protection dredging ship is completed on the building berth, the project integrity is checked, and the bow traction rigging is checked; the ship body structure welding is completed, the plate tightness and painting are completed, the mooring equipment is completely installed and can be used for mooring operation, the traction lifting lugs are installed and are reported to be qualified; the installation of the equipment on the ship is checked, the equipment that is not installed is temporarily fixed; the safety guarantee work during launching is checked, the deck railings should be installed firmly, the deck manhole cover, watertight door and seawater valve should be closed, and the water tightness of the drain plug is good.
[0016] The empty ship bow draft is 2.3m, the stern draft is 1.6m, and the bow inclination is 0.7m, which does not meet the launching conditions. Through the floating state calculation, the bow and stern ballast water is adjusted to reduce the difference between the bow and stern drafts, finally the bow draft is 2.0m, the stern draft is 1.7m, and the stability of the ship floating state is ensured.
[0017] S1.2, air bag and traction device arrangement: as shown in Figure 1 The ship launching force is about 19t through theoretical calculation, two 20t lifting lugs are installed at the bow of the ship, and two ∅40mm×32m steel wires are arranged for traction, the lifting lugs are installed at the strong structure position of the ship body to ensure safety, the 25T winch, pulley block and air bag 4 are arranged, the air bag 4 is arranged in 18, of which 13 are used for lifting and rolling operation, and 5 air bags 4 are used as standby; the sundries and cement sludge on the building berth 1 are cleaned, and the water depth of the outer launching area of the building berth 1 is measured, and the building berth gate 2 is lifted off.
[0018] S1.3, ship launching: as shown in Figure 2As shown, the air bag 4 is inflated to lift the ship off the support at the bottom of the ship, and the winch 3 is used in cooperation with the air bag 4 to slide the ship to the end of the ship berth 1 at a low tide stage, and the ship berth 1 gate is outside the 3M position, as shown. Figure 3
[0019] S1.4, towing and launching: as shown, the ship stern bitt is connected with the tug 5 using a cable, which is used for stern traction, and the tug 5 has a draft of 3.6M. After the water level meets the ship launching at a high tide stage, the tug 5 drags the ship away from the ship berth 1 to launch the ship, and the bow traction steel wire rope is cut off at the same time to avoid the ship sliding off. Figure 4
[0020] The distance between the tug 5 and the ship is more than 80m to prevent the ship from colliding with the tug 5 due to inertia after the ship is unhooked. A bitt boat 6 is prepared in advance, which is used to drag the air bag 4 away if the air bag 4 is not detached after launching.
[0021] To ensure the safety of the ship, the water depth outside the ship berth 1 is at least 4.5m during launching, and the water depth at the berthing position needs to meet at least 3m at the lowest tide; the wind speed is less than 12m / s, and the visibility is more than 200m.
[0022] S1.5, wharf mooring: after the ship is stabilized, the tug is alongside the ship, and the bitt boat 6 and the tug 5 cooperate to drag the ship to the designated position to complete the wharf mooring, and the launching operation is completed.
[0023] The cotton quilt needs to be laid when the tug 5 is in contact with the ship to avoid damaging the outer plate paint.
[0024] The mooring cable uses high molecular polyethylene fiber cable with a diameter of ≥φ44mm, and the cable and bitt are regularly inspected. The safety factor of the breaking tension of the cable reaches more than 3 times, and the bearing capacity of the wharf bitt meets 1000kN. Before mooring, the mooring area is checked first. If there is a fast mouth or acute angle, protective materials need to be installed to wrap the angle before mooring. The protective material is a round pipe with a diameter of φ89x13-3000, which needs to be fully continuous with 6mm angle welds and ensure safety. When mooring, the bitt near the fairlead needs to pass through the fairlead first. The angle between the bow and stern mooring and the wharf is controlled at 30°-45° to ensure that all the cables are evenly stressed in a single direction. Rubber is used to prevent abrasion at the contact between the cable and the edge of the wharf. If more than two cables need to be wound on double pile columns, each cable needs to be wound independently on a single pile for easy on-site winding and reverse buckling.
[0025] When mooring, the cable cannot be too tight and needs to have a certain elasticity to prevent the cable from breaking due to the large buoyancy of the ship at high tide caused by the tight mooring at low tide. Professional personnel need to be on duty for 24 hours and equipped with a tide table to closely observe the ship's dynamics and the stress conditions of each point of the cable and adjust the tightness of the cable according to the tide at any time.
[0026] The ship launching operation on the berth includes the following steps: S2.1, preparation before going on the shipway: after the ship is debugged on the wharf, the steel piles are removed in advance, the draft of the stern is reduced, the draft of the ship is adjusted, and the shipway gate 2 is lifted off, and the slope ratio is adjusted.
[0027] The draft of the bow of the ship is 2.1 m, the draft of the stern is 1.7 m, and the bow inclination is 0.4 m, which does not meet the working condition, so the steel piles need to be removed in advance on the wharf, two steel piles weigh about 50 t, and the draft of the stern can be reduced to 1.6 m.
[0028] S2.2, arrangement of tooling, air bag and winch: as shown in Figure 5 , during the low tide stage, the air bag 4 is pre-buried at the end of the shipway 1 using sandbags, the berthing tooling 7, cable guide 8 and scale tooling 9 are arranged at the end of the shipway 1, and the winch 3 is arranged above the shipway 1. At this time, the winch 3 is a 50T winch.
[0029] The sundries and cement area silt on the shipway 1 are cleaned, and the water depth of the shipway 1 area is surveyed; As shown in Figure 6 , the berthing tooling 7 includes a 50T counterweight 71 and a vertical rod 72 made of steel pipe, the vertical rod 72 is fixed to the side of the counterweight 71, the vertical rod 72 and the counterweight 71 are connected by an angle steel 73 arranged at an angle, and the bottom of the vertical rod 72 is fixed to the counterweight 71 by an elbow plate 74.
[0030] S2.3, mooring at the end of the shipway: as shown in Figures 7-8 , the upward traction of the ship is calculated by theoretical calculation, one high molecular cable is moored on each side of the ship, and the cable pipa head is hung on the double-column cable pile respectively, which is used for stern traction. The tugboat 5 is beside the right side of the ship, and the ship is sent to the end of the shipway 1 with the advantage of high tide water depth, and stopped at a distance of 12 m from the shipway gate 2. The stern of the ship faces the direction of the shipway 1, and the stern is first on the shipway 1. The highest tide of the ship on the shipway 1 meets more than 4.5 meters.
[0031] The stern is towed to the berthing tooling 7 and moored, after the stern cable and the left side cable are hung, the tugboat 5 lifts the bow, and the gantry crane stopper 10 is used to hang the right side cable pile; The upward traction of the ship is calculated by theoretical calculation, which is about 27t, one high molecular cable with a diameter of 60mm*100m is moored on each side of the ship, and double processing is done. The cable pipa head is hung on the double-column cable pile respectively, which is used for stern traction. The tugboat is beside the right side of the ship, and the ship is sent to the end of the shipway with the advantage of high tide water depth, and the cable is moored after the berthing tooling.
[0032] S2.4, moving the ship to the shipway gate: as shown in Figures 9-10As shown, after the cable boat 6 is hung with the stern rigging, the winch 3 and the 200T gantry crane continue to move the ship to the berth 1, the stern moves to the side of the berth gate 2 and stops at 10-16 meters, the specific position is adjusted according to the tidal position and the actual draft, and the ship is moored and fixed; the maximum stress of each hook of the gantry crane is not more than 20T, and the stern draft is adjusted as an emergency plan.
[0033] S2.5, ship up: as shown in Figure 11 the tide stage, when the stern air bag is exposed to the water surface, the air bag 4 is inflated, the winch 3 pulls the ship upwards, the left and right side ropes are unhooked, the ship is separated from the tidal area, the ship pulls the front lifting off the dismantling berthing tool 7 to avoid interfering with the air bag inflation of the ship bottom.
[0034] S2.6, ship bottom replacement: as shown in Figure 12 the winch 3 pulls the ship to the designated position, the berth gate 2 is closed, the air bag 4 is inflated and lifted, the ship bottom is placed on the support pier again, the air bag 4 is deflated and removed, and the ship is disassembled and shipped.
[0035] If the ship is built in the dock, due to the weight of the ship body being about 960T, the dock gantry crane cannot be used for lifting and landing, a 2300T floating crane needs to be used for lifting and landing, and due to the length of the ship body, two lifting tools are needed, only one is available, an additional one needs to be made, one lifting tool is about 45T, and a large amount of labor and materials need to be consumed. In the berth, the air bag is used for launching and landing on the berth, the floating crane cost is saved by 1 million yuan, the labor cost is saved by 59,000 yuan, the material cost is saved by 202,000 yuan, the air bag cost is 100,000 yuan, and about 1,161,000 yuan can be saved.
[0036] Through the air bag combined with the tug, the winch, the small gantry crane, the ship launching and landing on the berth are realized, the water and land transfer operation difficulty of the ship is reduced, the operation is more efficient, the use of large gantry crane and large floating crane is avoided, the operation cost is reduced, and the overall delivery cycle of the project is ensured not to be affected.
[0037] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.
Claims
1. A method for transferring a modular, intelligent, and environmentally friendly dredging vessel between land and water, characterized in that: The launching operation and the shipbuilding operation on the shipbuilding berth; The launching operation comprises the following steps: S1.1, preparation before launching: after the completion of the assembly type intelligent environmental protection dredging ship on the berth, the project integrity is checked, the bow traction rigging is checked, the adjustment of the bow and stern ballast water is made through the floating state calculation, the bow and stern draft difference is reduced, and the stability of the ship floating state is ensured; S1.2, air bag and traction device arrangement: the ship sliding force is obtained through theoretical calculation, two lifting lugs are installed on the bow of the ship, and two steel wires are arranged for traction, the traction device winch, pulley block and air bag are arranged; S1.3, ship sliding: the air bag is inflated to lift, the support at the bottom of the ship is removed, the winch and the air bag are used to slide the ship to the end of the berth at the low tide stage, and the ship is stopped at the position 3M outside the shipbuilding gate; S1.4, mooring tug, launching: the stern bollard of the ship is moored with the cable of the tug for stern traction, and the tug is used to drag the ship away from the shipbuilding berth at the high tide stage, the bow traction steel wire is cut off at the same time, so that the ship sliding deviation is avoided; S1.5, wharf mooring: after the ship is stabilized, the tug is alongside the ship, the ship is dragged to the specified position, and the wharf mooring is completed; The shipbuilding operation on the shipbuilding berth comprises the following steps: S2.1, preparation before the shipbuilding operation on the shipbuilding berth: after the completion of the debugging of the ship on the wharf, the steel pile is removed in advance, the stern draft is reduced, the ship draft is adjusted, and the shipbuilding gate is lifted off; S2.2, arrangement of tooling, air bag and winch: at the low tide stage, the air bag is pre-buried by using sand bags at the end of the shipbuilding berth, the berthing tooling, cable guide and scale tooling are arranged at the end of the shipbuilding berth, and the winch is arranged above the shipbuilding berth; S2.3, mooring of the ship at the end of the shipbuilding berth: the upward traction force of the ship is obtained through theoretical calculation, one high polymer cable is moored on the left and right sides of the ship respectively, the cable pipa head is moored on the double-column mooring bollard respectively for stern traction, the tug is alongside the right side of the ship to take advantage of the high tide depth to send the ship to the end of the shipbuilding berth 12m away from the shipbuilding gate, the stern of the ship faces the direction of the shipbuilding berth, the stern is dragged to the berthing tooling for mooring, after the mooring of the stern cable and the left side cable is completed, the tug lifts the bow, and the right side cable bollard is moored by using the gantry crane; S2.4, moving the ship to the shipbuilding gate: after the mooring of the cable boat and the stern rigging is completed, the ship is moved to the shipbuilding berth by cooperating with the winch and the 200T gantry crane, the stern is moved to the position 10-16m away from one side of the shipbuilding gate, and the ship is moored and fixed; S2.5, ship moving up: at the ebb tide stage, after the stern air bag is exposed to the water surface, the air bag is inflated, the winch pulls the ship upward, the left and right side cables are unmoored, the ship is separated from the tidal area, the berthing tooling is lifted off and removed, and the ship is pulled upward; S2.6, replacement of the ship bottom: after the ship is pulled to the specified position by the winch, the shipbuilding gate is closed, the air bag is inflated and lifted, the support pier is placed at the bottom of the ship again, the air bag is deflated and removed, and the ship is disassembled and shipped.
2. The water-land transfer method of the assembled intelligent environmental protection dredging ship according to claim 1, characterized in that: 3. The water-land transfer method of the assembled intelligent environmental protection dredging ship according to claim 1, characterized in that: In the step S1.4, the tugboat is more than 80m away from the ship to prevent the ship from colliding with the tugboat due to inertia after unhooking, and a barge boat is prepared in advance, and the barge boat is used to pull away the air bag if the air bag is not separated after launching.
4. The water-land transfer method of the assembled intelligent environmental-protection dredging ship according to claim 1, characterized in that: In the step S1.5, the mooring cable is made of high molecular polyethylene fiber cable with a diameter of greater than or equal to 44mm, the cable is regularly inspected, the safety factor of the breaking tension of the cable is more than 3 times, the bearing capacity of the wharf bitt meets 1000kN, the mooring area is inspected before mooring, the protection material is installed at the sharp corner, the protection material is a φ89*13-3000 round pipe, the guide hole is passed through when the mooring cable is near the guide hole, the angle between the bow and stern mooring and the wharf is controlled to be 30°-45°, the uniform force of all the cables in the single direction is ensured, and the rubber is used for wear-resistant measures at the contact position between the cable and the edge of the wharf.
5. The water-land transfer method of the assembled intelligent environmental-protection dredging ship according to claim 1, characterized in that: In the step S2.2, the sundries and silt on the shipbuilding berth are cleaned, and the water depth of the shipbuilding berth area is measured; the berthing tool includes a counterweight and a vertical rod, the vertical rod is fixed to the side of the counterweight, an angle steel is arranged between the vertical rod and the counterweight, and the bottom of the vertical rod is fixed to the counterweight through an elbow plate.