58 results about "Slipway" patented technology

The invention relates to the technical field of hovercraft assembly, and discloses a method for assembling a propeller tower and a short engine room of a hovercraft, which is characterized in that a detection line reference system of a chassis frame and a height marker post is arranged at a ground prefabrication stage, so that the positioning adjustment of the propeller tower and the short engine room is completely completed at a low-altitude site; the operation risk that a scaffold is repeatedly erected and disassembled during high-altitude hoisting of a slipway in a traditional technology is avoided, a three-dimensional space positioning network is constructed by combining the plane datum of the chassis frame and the vertical datum of the height marker post, the precision error in the combining process is reduced, high-altitude closing operation of a traditional slipway stage is moved forwards to the ground site to be completed, and the working efficiency is improved. And the short engine room-paddle tower module only needs to be hoisted and positioned once when the ship body is finally carried, so that the processing period of a slipway is shortened, and the production cost of the hovercraft is further reduced.

The invention discloses a rudder system structure and an assembling method. The rudder system structure comprises a stern and a rudder blade. The stern is provided with a rudder horn, a steering engine and a rudderstock, the steering engine is arranged on the upper side of the stern, the rudderstock penetrates through the stern, the steering engine drives the rudderstock to rotate, the rudder horn protrudes in the horizontal direction to form a rudder button, and a rudder pintle is rotatably arranged on the rudder button; the rudder blade is connected with the rudder stock, the rudder blade is provided with a supporting part, a rudder pintle and a mounting concave position, the supporting part protrudes out of the rudder blade, the mounting concave position is located above the supporting part, the rudder button is arranged in the mounting concave position, the rudder pintle penetrates through the rudder button to be connected with the supporting part, the rudder pintle is rotatably connected with the rudder button, a box body is detachably arranged in the mounting concave position, and the box body is arranged above the rudder button. The rudder pintle is pre-installed on the rudder blade, the rudder button is in butt joint with the rudder pintle, meanwhile, the rudder blade is connected with the rudder stock, and then the box body is installed on the rudder blade, so that the activity space of the rudder button is enlarged, the operation difficulty is reduced, the operation is simple, the installation period is shortened, the slipway utilization rate is improved, and time and cost are saved.

The invention relates to a slideway folding and unfolding device for a non-bow towing point underwater towed body, and the slideway folding and unfolding device comprises a track assembly which is used for sliding, locking and positioning a horizontal pushing trolley and supporting an inclined slideway assembly; the horizontal pushing trolley is used for translational motion of the inclined slide way assembly and the underwater towed body / UUV; the inclined slideway assembly is used for providing a sliding channel and a storage space for the underwater towed body / UUV and sliding and dragging the underwater towed body / UUV to a storage position in a cable dragging mode; the inclined slide way assembly comprises a slide way which is arranged in an inclined mode, and a guide cover assembly is installed at the tail end of the inclined slide way assembly and used for forced guiding of a non-bow towing point underwater towed body / UUV. The problem that a non-bow towing point underwater towed body / UUV is difficult to recycle and enter a slide way is solved.

The invention discloses a networked arrangement method for ship block construction datum lines, and relates to the technical field of ship block construction, which comprises the following steps: S1, part preparation: setting datum lines in vertical, longitudinal and transverse directions through specific analysis of a block structure form, and spraying powder and marking the datum lines in place on all structural parts in a blanking stage, wherein the datum line is divided into a cross section line, a longitudinal section line and a horizontal section line, specific datum lines are set at the longitudinal latitude, the transverse latitude and the vertical latitude of the subsection respectively, grid systems are formed on the subsection structure and distributed on the surfaces of all parts, and the subsection construction datum is controlled according to the grid lines. According to the networked arrangement method for the ship block building datum line, through brand-new arrangement of the block building datum line and brand-new control requirements in the building process, the block building precision is controllable, the block building precision meets the requirements, and the requirements for whole ship block allowance-free building, allowance repairing and cutting reduction and slipway carrying period shortening are met.

The invention relates to the technical field of ship construction, and discloses a semi-ship remote transfer method, which comprises the following steps: firstly, blocking a semi-ship and then floating, then arranging a steel bracket on a semi-submersible barge in advance, then towing the semi-ship to the semi-submersible barge, then floating the semi-submersible barge and supporting the semi-ship and a seat pier through the steel bracket, and finally transferring the semi-ship to the semi-submersible barge. Then the semi-submersible barge carries the semi-ship to reach the wharf of the horizontal slipway to prepare for lightering, then the ship moving trolley enters the semi-submersible barge and transfers the semi-ship out of the semi-submersible barge, and finally the semi-ship is transferred and piled on a target site of the horizontal slipway; according to the method, the half ship is transferred to the horizontal slipway from the dock, in the building process of the ship, the half ship can be firstly built in the dock, and then the half ship is transferred to the horizontal slipway to be continuously built into the whole ship, so that the field utilization rate of the dock and the horizontal slipway is increased, and the productivity of a shipyard is improved.

A method for launching, recovering, or inspecting a floating offshore wind turbine structure (1), which includes a wind turbine (2) and a support structure (3), after the structure has been assembled, is transported to a platform (16) at the top of an inclined slipway (23) extending from above the water surface (4) to a position below the water surface (4). The structure (1) is launched by lowering it from the platform (16) along the slipway (23) into the water until the assembled floating offshore wind turbine (1) is lifted away from the slipway (23) by the buoyancy of the floating support structure (3).

The invention discloses a large block assembling device and method, and the method comprises the following steps: dividing a whole ship into a plurality of segments, determining a block assembling region to support the parallel assembling of multiple ships according to the segments and blocks, and assembling the segments into blocks in the block assembling region; determining a slipway area according to the block assembly area; the slope of the slipway is determined according to the requirements of the carried block, the model of the steel pier and the jacking height of the air bag in the launching pier dismantling stage, so that the module vehicle can transport the block in all areas of the slipway; the cabin area section and the bow ring section are firstly placed on a slipway to be carried by using the block assembling device; acquiring total group data of a block completed based on the fact that the module vehicle and the gantry crane cooperatively carry other blocks; and on the basis of the acquired data, positioning and carrying other blocks by using the module vehicle on the slipway so as to complete block assembly. The problem that in the ship building process, efficiency is low is solved.

The invention discloses an inclined slipway ship launching tide height monitoring method and tool, and the method comprises the following steps: S1, installing a vertical guide sleeve on the outer side of a dock wall, keeping a distance between the guide sleeve and the dock wall, and enabling the top end of the guide sleeve to extend to a position above the wall surface of a slipway; s2, a measuring rod with scales is inserted into the guide sleeve, so that the measuring rod can move in the axial direction of the guide sleeve along with the change of the water level, and a floating ball is connected to the bottom end of the measuring rod, so that the top end of the measuring rod always extends out of the upper edge of the guide sleeve; and S3, determining the current tide level height by reading the scale value of the measuring rod corresponding to the upper edge of the guide sleeve. The measuring rod main body is arranged in the guide sleeve, so that corrosion and fouling are effectively prevented; the reading position is transferred to the position above the slipway from the quay wall water gauge and is guided to the upper edge of the sleeve, so that the observation operation is closer to a personnel operation area, and the reading risk caused by unclear vision is remarkably reduced.

The invention relates to the technical field of ship simulation test equipment, and particularly discloses a test device for ship berthing, which comprises a rotary support assembly, and the bottom end of the rotary support assembly is fixedly arranged at the bottom of an ocean engineering test pool. A wharf model or a slipway model used for simulating a berthing target is fixedly arranged at the top end of the rotary supporting assembly, and the rotary supporting assembly is configured to be capable of driving the wharf model or the slipway model to rotate so as to adjust the angle relative to the wave direction. Through the arrangement, the wharf model or the slipway model can be rotated to any specified angle position as required by rotating the supporting assembly, the ship berthing test research requirements under different wave direction working conditions can be effectively met in an ocean engineering test pool, operation is easy and convenient, the application range is wide, and practicability is high. And multi-direction waves do not need to be generated by depending on wave making equipment, so that the overall cost of the ship berthing test is remarkably reduced, and the test efficiency and flexibility are improved.

Method for controlling a motor vehicle (3) which has a trailer hitch (5) for attaching a boat trailer (6) and at least one rear parking sensor (7) and is designed to automatically activate the rear parking sensor (7) when the motor vehicle (3) is reversing in a normal operating mode of the motor vehicle (3), wherein in the method - a current slipway situation is detected in which the boat trailer (6) attached to the trailer hitch (5) is to be driven into the water (2) by reversing the motor vehicle (3), characterized in that - based on vehicle data originating from sensors of the motor vehicle (3) and indicating the current state of the motor vehicle (3), the slipway situation is automatically detected when a boat trailer (6) is attached and an electrical connection between the motor vehicle (3) and the boat trailer (6) has been disconnected within a specified past time period or in the current vicinity of the motor vehicle (3), and a detected tilt angle of the motor vehicle (3) and / or the boat trailer (6) is consistent with a position of the motor vehicle (3) and / or the boat trailer (6) on a slipway (1), and - upon detection of a current slip situation, all rear parking sensors (7) of the motor vehicle (3) or outputs of warning signals on objects (6) detected by means of the rear parking sensors (7) are automatically deactivated for the slip situation according to a predefined slip operating mode different from normal operation.

A temporary and removable floating boat ramp for launching trailered watercraft. The invention relates to the design and construction of a temporary and removable floating boat ramp. It consists of two parts: the floating part, which is in the water and on the beach, made of HDPE tubing (3), floats (14), and stainless steel grating (1) with stops (5) and (6); and the land-based part, which is made of HDPE tubing (3) and wooden grating (2), and can be extended to the top of the beach (13). The device according to the invention is intended for launching boats less than 6 meters in length, allowing optimal launching for anyone wishing to launch their watercraft.The invention will allow the user to reverse by driving over it with their trailer (15) (12) until they reach the water level and be able to launch or retrieve their boat (11). Abbreviated figure: fig. 5.

The invention belongs to a ship slideway launching structure in the technical field of ship construction. A plurality of launching cross beams (2) supported on a slide way (5) are arranged at the bottom of the ship body (1), a plurality of air bags (3) are arranged between the side face of each side of the ship body (1) and the launching cross beams (2), the air bags (3) are of a long-strip structure, a fixing rope (4) bypasses the air bags (3) and is connected with the launching cross beams (2) and the side face of the ship body (1), and the air bags (3) on each side of the ship body (1) are arranged to be of a horizontally-arranged structure, or the air bags (3) on each side of the ship body (1) are arranged to be of a horizontally-arranged structure. The air bags (3) on each side of the ship body (1) are arranged to be of a triangular structure. The ship slideway launching structure is simple in structure, can effectively solve the problem that the ship cannot launch due to low water level in the dry season of Yangtze River, can still launch reliably when the water level is insufficient in a shipyard, improves the launching efficiency, and reduces the production cost.

This invention provides a design method for the construction of a split-type vertical non-slipway jacket structure in shallow water, comprising: generating construction scheme data for a split-type vertical non-slipway jacket structure in shallow water; designing the segmented assembly piers for the upper jacket and the overall jacket for ship transport, and outputting pier design data; designing the foundation modification scheme for the construction area of ​​the split-type vertical non-slipway jacket structure in shallow water, and generating foundation modification scheme data; designing the construction scheme for the lower jacket, the scheme for building the upper jacket based on the lower jacket, and the hoisting and closure scheme for the upper and lower jackets, and generating lower jacket construction scheme data, upper jacket construction scheme data, and hoisting and closure scheme data. This invention divides the jacket structure into upper and lower jackets, completing vertical construction simultaneously in the non-slipway area followed by assembly. This results in a short construction period, fast ship loading speed, no need for slipways, and minimal space occupation; vertical installation can be carried out directly at sea without the need for offshore righting operations.

The technical scheme belongs to the technical field of ship production, and particularly relates to a reverse support assembly which is used for being additionally arranged at a neutral position of two sections of section bars when a slipway is closed and after the section bars and slab joints are leveled by adopting a non-code tool so as to prevent slab wall difference caused by stress deformation during slab joint welding, and the reverse support assembly comprises a clamping mechanism, the fixing device is used for being installed on flat-bulb steel or a T-shaped profile. The connecting rod is mounted on the clamping mechanism; one end of the adjusting mechanism is installed on the connecting rod, the other end of the adjusting mechanism is used for being connected with a ship plate, and the ship plate is positioned through the adjusting mechanism; the adjusting mechanism comprises a connecting piece which is provided with a mounting hole, and the connecting piece is arranged on the connecting rod in a sleeving mode through the mounting hole; one end of the lifting assembly is connected with the connecting piece; the stacking plate is connected with the other end of the lifting assembly, and the stacking plate is used for being welded to or abutting against a ship plate; the distance between the connecting piece and the stacking plate is adjusted through the lifting assembly, the ship plate is maintained at the set position, use is convenient, and the problem that the ship plate is dislocated is solved.

The invention discloses a stern shaft section pre-outfitting method, which belongs to the technical field of ship construction, and comprises the following steps: S1, 101, pre-installing a section stern tube bracket, S2, 102, pre-installing a section rudder system component, and S3, carrying, folding and monitoring. The stern tube bracket and the rudder system component are preassembled on the sections, and high-precision measuring and monitoring means are adopted in the carrying and folding process, so that the influence of carrying process change and work type cross operation on the component positioning precision is greatly reduced, and compared with a traditional slipway mounting mode, the positioning precision is remarkably improved, and the mounting period is greatly shortened.

A splicing and inserting type elastic supporting module is provided with a rectangular iron frame, the two ends and the top of the iron frame are each of an open structure, a combined wood module is fixed into the iron frame, a V-shaped groove sunken downwards is formed in the center of the combined wood module, flat iron is pressed on the edges of the two sides of the top of the combined wood module, and vertical bolts penetrate through the flat iron from top to bottom. And the combined wood modules are fixed. The combined wood module is formed by sequentially laminating a plurality of layers of sub-wood blocks from bottom to top, the lowermost layer is a common wood block, and the rest are spring wood blocks. The side, close to the V-shaped groove, of the spring wood block is obliquely arranged. Connecting flat iron and elastic buckles are symmetrically arranged on the two sides of the iron frame, a sliding way is arranged on the slipway, and the head supporting module is fixed to the bow fulcrum area of the sliding way. The device can be adjusted according to the length and the weight of the ship, can be universally used by multiple ships, solves the problems that the launching head fulcrum stress is large, and the fishing and manufacturing cost is high, reduces the construction cost of the real ship, and improves the launching safety of the ship.

The utility model discloses a rotary clamping mechanism and portable computer processing equipment, including rotary platform deck, slipway, clamping motor, clamping sensor and pressure sensor, the slipway is installed on the rotary platform deck, the slipway is equipped with first clamping jaw and second clamping jaw in sliding mode, forms the clamping area between first clamping jaw and second clamping jaw, and the pressure sensor is installed on the clamping area between first clamping jaw and second clamping jaw. The clamping motor is installed on the rotary carrying table and is in transmission connection with the first clamping jaw and the second clamping jaw, the clamping sensor is installed on the sliding table and used for detecting the position of at least one of the first clamping jaw and the second clamping jaw, and the pressure sensor is connected to at least one of the first clamping jaw and the second clamping jaw. By arranging the clamping sensor and the pressure sensor, the position and pressure of at least one of the first clamping jaw and the second clamping jaw can be detected, so that the pressure applied to a product is accurately controlled through the clamping motor, reliable clamping can be ensured, and appearance damage can be avoided.

The utility model provides a heating blanking equipment of injection molding machine switching mould core, including equipment platform and heating blanking device, the heating blanking device includes blanking mechanism, heating platform, material box and slipway module, the equipment platform is provided with slipway module, slipway module includes linear guide rail and guide rail motor, and the linear guide rail is provided with the material box. A heating platform is assembled on the linear guide rail; a guide rail motor drives the heating platform to reciprocate along the linear guide rail; the heating platform comprises a heating groove, a heater, a lifting platform and a lifting cylinder; the utility model aims to provide a heating and blanking device for switching a mold core of an injection molding machine, which is suitable for switching the mold core of the injection molding machine and is matched with the injection molding machine to periodically inject a workpiece, and an air knife is matched with automatic blanking to prevent the workpiece from being torn during manual blanking. And the mold core is preheated during waiting for mold core switching, so that the working efficiency can be improved.

The invention relates to an advanced boring process for a conventional rudder system of a ship. The advanced boring process comprises the following steps: modeling a ship body, and performing G111 finite element analysis on a stern total component segment; a stern total assembly segment G111 is assembled; preparing before boring the G111 rudder system of the stern assembly section: boring a rudder stock bearing seat and a rudder pintle bearing seat according to the condition of the center line of the rudder system, and reserving the boring amount for each boring hole; before a stern total assembly segment G111, a stern total assembly segment 101, a stern middle assembly segment G201 and a stern middle assembly segment G231P / S are subjected to large folding, matching personnel control the perpendicularity and the intersection degree of the center and the axis of a rudder hole by matching folding personnel according to a rough drawing shafting theoretical line, and welding is conducted after positioning is finished, so that the folding precision is controlled; after folding welding is completed, the intersection degree of the center line of the rudder system and the shaft system is checked again, micro fine boring is conducted on inner holes of the rudder stock bearing seat and the rudder pintle bearing seat, and the single-side machining amount of fine boring is the reserved hole boring amount in the fourth step; and pressing a rudder system bearing. The construction period can be shortened, and boring operation is completed in the total assembling stage in advance before a user goes on a slipway / enters a dock.

This invention discloses a method for the overall hoisting of folding hatch covers on polar multipurpose vessels, comprising the following steps: a) hoisting two hatch covers separately onto transport brackets; b) transporting the two hatch covers to the assembly site using a flatbed truck; c) adjusting the positioning accuracy of the hatch covers; d) installing the connecting pins between the hatch covers; e) installing anti-back-folding T-shaped fixtures; f) selecting a 400T gantry crane for hoisting; h) determining the lifting point positions of the hatch covers; i) determining the type of lifting points; j) installing hoisting shackles and wire ropes; k) lifting the entire hatch cover onto the slipway and merging it. This invention's method for the overall hoisting of folding hatch covers on polar multipurpose vessels solves the problem of multiple hoistings of a single folding hatch cover and the safety issue of reverse folding during hoisting of folding hatch covers, improving hoisting efficiency, shortening the construction period, and significantly enhancing competitiveness.

The invention belongs to the technical field of ship construction, and discloses a ship construction system and a ship construction method. The ship building system is used for building a ship and comprises a harbor basin, a first slipway line, a second slipway line, a dock line, a transfer device and a hoisting device. The harbor basin is communicated with a water area. The first slipway line, the second slipway line and the dock line are respectively communicated with the harbor basin; the cabin module block is built on the first slipway line, one of the cargo compartment module block and the bow module block is built on the second slipway line, and the other is built on the dock line. The transfer device is configured to transport the cargo compartment module block and the bow module block to the first slipway line, respectively. The hoisting device is configured to hoist the superstructure module block and the chimney module block to the first slipway line. According to the ship building system, parallel building of all module blocks of the ship can be achieved, and building efficiency and production collaboration of the ship are improved.

The present invention relates to a method for marking observation points of ship navigation lights, comprising the following steps: S1, using the centerline of the slipway as a reference, measuring the distance L1 between position C of the ship navigation light placed on the slipway and the centerline of the slipway, and drawing position C3 on the ship deck, where the distance between position C3 and the centerline of the slipway is L2, where L2 = L1; S2, setting up a total station at position C, aiming the lens at position C3, and setting the angle of the total station to zero; S3, rotating the total station away from the centerline of the slipway and / or toward the centerline of the slipway to the illumination angle of the ship navigation light, and drawing a marking line for the illumination angle of the ship navigation light after the total station is rotated to the desired angle; S4, finding the observation point on the angle marking line, and marking the observation point as the ship navigation light observation point. This method can achieve the reuse of the same series of ships, without the need to repeatedly measure the size of the observation point, and is simple to operate on site, low in cost, and can be installed and debugged at any time.

The present invention discloses a method for positioning non-parallel dual axis lines. S1: using the midship line of the ship's center as the reference line, according to the slope X of the slipway and the distance a between the two ribs, calculate the length b of the hypotenuse of the slipway center line and the height c at the first reference line; S2: calculate the length of the plane axis d on the slipway; S3: calculate the angle Z between the center line of the shaft system and its projection line on the horizontal plane; S4: according to the designed stern tube distance D, calculate the horizontal and vertical coordinates of the first reference point and the tail reference point; S5: and locate the light target positions of the first reference point and the tail reference point. This method can accurately locate the center lines of non-parallel dual axis systems, provide a precise reference for the installation of the shaft system, and provide a guarantee for the high-quality installation of the axis line. After inspection by ship mooring and navigation tests, the shaft system is operating normally. The successful application of this positioning method provides a reference for the subsequent development of the same type or similar work, and improves the construction and quality control of complex shaft systems.

The utility model relates to the technical field of ship dock way and ship trolley arrangement, in particular to an arc-shaped berth dock way and ship trolley connecting structure which is provided with an arc-shaped berth dock way, a fixed track on the dock way, a plurality of side-by-side ship trolleys arranged on the track side by side, the ship trolleys moving on the track, and ships arranged above the ship trolleys. A first ship trolley, a second ship trolley and a third ship trolley below the head of the ship are a first first vehicle, a second first vehicle and a third first vehicle respectively, a pressure bearing block is arranged above the first first vehicle and fixedly connected with a vehicle body of the first first vehicle through a pressure sensor, and air bag supports are arranged above the second first vehicle and the third first vehicle. The air bag supports are fixed to vehicle bodies of the first second vehicle and the first third vehicle through the pressure sensors respectively, the pressure-bearing air bags are connected into the air bag supports and connected with the air pump through the high-pressure pipelines, and air output by the air pump is input into the pressure-bearing air bags through the high-pressure pipelines. The device has the advantages of simple structure, convenience in use, capability of prolonging the dock way and the rolling distance of the ship trolley, smooth and safe launching of the ship and the like.

The invention discloses a novel method for assembling and transferring ship sections. The novel method comprises the following steps that a, a ship engine room and a stern area are divided into a plurality of sections; b, according to a ship structure assembling mode, the 10F block is directly assembled on a folding slipway, and the other blocks are transferred after being assembled; c, designing a transportation tray A, a transportation tray B and a transportation tray C; d, sectionally transferring the middle bottom of the cabin area to an outfitting and assembling site, and assembling on a transportation tray A and a transportation tray B; e, basin fitting-out is started after the middle bottom of the cabin area is assembled in a segmented mode; f, after the bottom sections in the cabin area are assembled into blocks, the two blocks are subjected to sand blasting and paint treatment; g, after the platform block in the cabin area is completed, sand blasting and paint treatment are conducted; h, after the deck block in the stern area is completed, sand blasting and paint treatment are conducted; i, after coating is completed, the block is transferred to a folding slipway for carrying operation; by means of the novel method, efficient and low-cost batch construction is achieved.

The embodiment of the invention provides a permanent fixing method for a boarding tower. The method comprises the steps that the installation position of a boarding tower is determined according to the horizontal slipway ship series connection mode; the tower leg suspension position of the boarding tower is determined according to the installation position, the kinetic energy channel corresponding to the tower leg suspension position is reinforced, and a bottom plate is correspondingly laid; and the boarding tower is hoisted and solidified. According to the permanent fixing method for the boarding tower, repeated disassembly and assembly of the boarding tower are reduced, the hoisting frequency of a crane is reduced, crane resources are saved, and the construction cost is reduced.

The present application provides a support system for moving and launching a ship, which is located between the slipway and the hull and consists of a plurality of beams, pulleys and docks. A plurality of beams are arranged at intervals at the bottom of the hull along the length direction of the hull. The pulleys are located below the beams and are used to provide support for the beams to support the hull. The docks are located at preset positions on the slipway. The pulleys and the slipway are connected in a sliding manner. The use of a plurality of pulleys to jointly carry the hull can drive the hull to move in a directional manner on the slipway, thereby realizing the process of moving the hull. After the hull is moved to the preset position of the slipway, the dock is used to replace the pulleys and abut against the beams, which can provide bottom support for the hull and realize the process of the hull sitting on the dock.

The invention discloses a construction method of a large water jet propulsion flow channel of a ship, belongs to the technical field of ship production, and solves the technical problem of poor production precision of an existing water jet propulsion flow channel construction method. The method comprises the following steps that 1, construction preparation and benchmark establishment are conducted, specifically, the construction preparation comprises drawing digestion, a construction process is compiled according to a drawing, and necessary tools are designed; the reference establishment specifically comprises the following steps: after ship body sections are closed, a ship body base line, a ship body center line and a shaft system theoretical center line are clearly calibrated again in a mounting area to serve as absolute references of all subsequent mounting work; 2, determining the technological requirements for manufacturing important parts and related structures of the runner; 3, the runner is manufactured in a segmented mode, and all the segments of the runner are spliced according to the technical requirements of the technology; and step 4, folding and positioning the slipway, rechecking the axis of the runner, and adjusting to meet the process requirements. The ultrahigh coaxiality of the propelling channel is ensured, and meanwhile, the extreme fairness and the structural integrity of the flow channel are ensured.

This invention proposes a method for the phased installation of unloading plates for bulk carriers, relating to the field of bulk carrier technology, including the following steps: (1) Initial stage: setting the position for the division of sections, dividing the trough-shaped bulkhead sections and unloading plates into bottom sections; (2) Sectioning stage: pre-assembling the trough-shaped bulkhead sections of the bottom section and the trough-shaped bulkhead sections of the trough-shaped bulkhead sections; uniformly pressing the pre-assembled plates into a whole, and then assembling them as a whole; after pressing and assembly, separating the trough-shaped bulkhead sections of the bottom section and the trough-shaped bulkhead sections of the trough-shaped bulkhead sections; installing the trough-shaped bulkhead sections of the bottom section onto the bottom pier on a horizontal jig, and then installing the unloading plates, thereby completing the installation of the components in the bottom pier; hoisting the components in the bottom pier onto the inner bottom plate for installation, thereby completing the installation of the bottom section; (3) Slipway stage: completing the overall positioning and welding of the bottom section and the trough-shaped bulkhead sections on the slipway.

The invention provides a construction method of a prismatic liquid tank, which comprises the following steps: firstly, carrying out framework division on the prismatic liquid tank, cutting the prismatic liquid tank in a horizontal octagonal prism shape into three parts along a horizontal section, including an upper part, a middle part and a lower part, each part accounts for about 1 / 3 of the total volume, and dividing each part into a plurality of middle assemblies; special supporting tools are designed for the upper portion, the middle portion and the lower portion and used for assisting in fixing all the middle assemblies, and after the middle assemblies are assembled, welding robots are arranged in a unified mode for centralized welding. And after the upper part, the middle part and the lower part are respectively constructed, butting and folding are carried out, so that the construction of the whole prismatic liquid tank is completed. According to the construction method, the large-group construction process is omitted, the total-group construction method is optimized, the limitation of a construction site is broken through, core resources such as cranes and sites in a slipway or dock area are saved, erecting and dismantling of scaffolds are reduced, application of welding robots is promoted, meanwhile, the construction period of the prismatic liquid tank is shortened, and the construction efficiency and construction cost of the liquid tank are greatly improved.