A transport assembly line for manufacturing luxury cruise ships in sections

Abstract

The present invention discloses a transportation assembly line for the segmented manufacturing of luxury cruise ships, including a traveling crane, a segmented logistics system and an assembly service gantry, wherein the segmented logistics system includes a hydraulic lifting trolley and a track, wherein the track is provided with a hydraulic lifting trolley, and the hydraulic lifting trolleys are connected by a coupling, and the track includes a tunnel, and the hydraulic lifting trolley is located in the tunnel below the ground and travels on the rails, and the hydraulic lifting trolley includes a lifting beam panel located on a cover plate, and the middle part of the lifting beam panel and the lifting beam are connected by a pin hinge, and the lifting beam is connected to a frame through guide structures on both sides, and the two ends of the lifting beam are hingedly connected with a stabilizing bar, and the roller shaft at the lower end of the stabilizing bar is located in the toothed locking strips on both sides of the frame, and the toothed locking strips are driven by an electric push rod, and a driving wheel assembly and a driven wheel assembly are respectively installed on both sides of the bottom of the frame. The present application can occupy less ground space, has higher stability and safety, and can realize the assembly line transportation of thin plate segments.

Description

Technical Field

[0001] The invention relates to the technical field of segmented production line transportation for shipbuilding, in particular to a transportation line for segmented production of luxury cruise ships. Background Art

[0002] my country's shipyards lack the ability and experience in designing and building luxury cruise ships, and the supporting equipment needed to build cruise ships is also lacking. It is necessary to improve our cruise ship supporting industry and improve the level of shipbuilding technology.

[0003] Large luxury cruise ships have many decks, and most of the structures are thin plate flat segments and open sections. Therefore, the production, transportation and welding of thin plate sections are one of the most critical links in the construction of luxury cruise ships. During the construction and transportation of thin plate sections, it is very necessary to carry, transport and place them at each workstation. In order to achieve the thin plate section transportation logistics to meet the production rhythm and improve the section manufacturing efficiency, a dedicated section ground logistics system is set up.

[0004] The assembly line of a traditional segmented assembly workshop is composed of a steel structure platform frame and a ground trolley group arranged above the ground. The segments are placed on the platform frame, which is generally higher than the ground. The segments have higher gravitational potential energy and are unstable compared to being placed on the ground. It is inconvenient for people to get on and off and it occupies the height space of the workshop. There are requirements for the construction height of the workshop and the installation height of the crane. Summary of the invention

[0005] In order to solve the above problems, the present invention discloses a transportation assembly line for manufacturing luxury cruise ships in sections.

[0006] The technical solution of the present invention is: a transport assembly line for the segmented manufacturing of luxury cruise ships, including a traveling crane, a segmented logistics system and an assembly service gantry, the segmented logistics system includes a hydraulic lifting trolley and a track, the track is provided with a hydraulic lifting trolley that runs in a straight line and synchronously in parallel, the hydraulic lifting trolleys are connected by a coupling, the track is located in a tunnel, the hydraulic lifting trolley is located in the tunnel below the ground and walks on the steel rails, the side walls and the top of the tunnel are respectively paved with steel plates and cover plates, the hydraulic lifting trolley is under the cover plate, the hydraulic lifting trolley includes a lifting crossbeam panel located on the cover plate, the lifting crossbeam panel is provided on the cover plate, and the lifting crossbeam panel is provided on the cover plate. The middle part of the beam panel and the jacking beam are connected by a pin hinge, the top of the jacking beam is arc-shaped, the jacking beam panel is straight, the jacking beam is connected to the frame through the guide structures on both sides, the jacking beam is driven by the hydraulic cylinders on both sides of the guide structure, and the two ends of the jacking beam are hinged with stabilizer bars, the roller shaft of the stabilizer bar is locked by the groove surface of the toothed lock strip of the locking structure, rollers are provided at both ends of the roller shaft, and L-shaped limit grooves matched with the rollers are provided on both sides of the toothed lock strip, which is driven by an electric push rod, and a driving wheel assembly and a driven wheel assembly are respectively installed on both sides of the bottom of the frame.

[0007] Further, the jacking beam panel is below the ground.

[0008] Furthermore, the guide structure comprises a guide column fixedly connected to the bottom of the lifting beam, and the guide column cooperates with a guide sleeve rigidly connected to the frame.

[0009] Furthermore, guide wheel assemblies are provided on both sides of the upper surface of the frame.

[0010] Furthermore, the track spacings are equal.

[0011] The benefits of the present invention are as follows: the present application can occupy less ground space, has higher stability and safety, the number of trolleys can be freely combined to adapt to segments of different sizes and shapes, and can realize assembly line transportation of thin plate segments. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the layout of the segmented logistics system of the present invention;

[0013] Figure 2 It is a schematic diagram of the connection mode of the hydraulic lifting trolley of the present invention;

[0014] Figure 3 It is a schematic diagram of the segmented assembly line layout of the present invention;

[0015] Figure 4 It is a cross-sectional schematic diagram of the segmented logistics system of the present invention;

[0016] Figure 5 It is a schematic diagram of the hydraulic lifting trolley of the present invention in a descending state;

[0017] Figure 6 It is a schematic diagram of the hydraulic lifting trolley of the present invention in the ascending state;

[0018] Figure 7 It is a schematic side view of the hydraulic lifting trolley of the present invention in an unlocked state;

[0019] Figure 8 It is a schematic side view of the locked state of the hydraulic lifting trolley of the present invention; wherein: 1, driving, 2, assembly service gantry, 3, floor, 4, segmented logistics system, 5, ship segment, 6, lifting beam, 7, guide column, 8, pin shaft, 9, lifting beam panel, 10, hydraulic cylinder, 11, stabilizer bar, 11-1, roller shaft, 11-2, roller, 12, guide wheel assembly, 13, guide sleeve, 14, frame, 15, driving wheel assembly, 16, cover plate, 17, tunnel, 18, rail, 19, coupling, 20, hydraulic lifting trolley, 21, driven wheel assembly, 22, electric push rod, 23, toothed lock strip, 23-1, groove surface, 24, limit groove, 25, hydraulic pump station, 26, PLC control box. DETAILED DESCRIPTION

[0020] In order to deepen the understanding of the present invention, the specific implementation mode of the present invention is described in detail below with reference to the accompanying drawings. This embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0021] like Figure 1-8 As shown, a transport assembly line for the segmented manufacturing of luxury cruise ships includes a traveling crane 1, a segmented logistics system 4 and an assembly service gantry 2. The segmented logistics system 4 includes a hydraulic lifting trolley 20 and a track. The track is provided with hydraulic lifting trolleys that run linearly and synchronously in parallel. The hydraulic lifting trolleys are connected by a coupling 19. The track spacing is equal. The track is located in a tunnel 17. The hydraulic lifting trolley is located in the tunnel 17 below the floor 3 and travels on the rails 18. The side walls and the top of the tunnel 17 are paved with steel plates and cover plates 16 respectively. The hydraulic lifting trolley is located below the cover plate 16. A detachable cover plate 16 is used above the tunnel 17. The cover plate is bolted to the brackets on both sides of the tunnel. The cover plate 16 usually blocks the tunnel 17. A gap groove is left between the two cover plates for the lifting of the jacking beam 6. The cover plate 16 is removed during maintenance to facilitate maintenance by the staff. At the same time, the cover plate 16 meets the load requirements for carrying people and passing vehicles.

[0022] The hydraulic lifting trolley 20 includes a lifting beam panel 9 located on the cover plate, the lifting beam panel 9 is lower than the ground, and a gap is provided on the cover plate for lifting and lowering the lifting beam 6. The middle part of the lifting beam panel 9 is hinged to the lifting beam 6 through a pin shaft 8. The top of the lifting beam 6 is arc-shaped, and the lifting beam panel 9 is straight. The lifting beam structure can ensure that the load of the running wheel is uniform and protect the segmented structure. The lifting beam panel 9 can rotate around the pin shaft 8. If the deck is deformed due to its own weight, the lifting beam panel 9 can be completely fitted with the deck to avoid hard points. The lifting beam panel can rotate around the pin shaft 8. The lifting beam panel 9 is in contact with the segmented deck, and the uneven load of the segment can be converted into a concentrated load through the pin shaft 8. The load transmitted to the two cylinders is equal, which plays a role in protecting the cylinders and can effectively avoid the damage of the uneven load of the segment to a single cylinder. The concentrated load can make the guide columns on both sides bear force evenly, reduce the wear of the guide sleeve, and improve the life of the anti-wear material on the inner wall of the guide sleeve.

[0023] The lifting beam 6 is connected to the frame 14 through the guide structures on both sides. The lifting beam 6 is driven by the hydraulic cylinders 10 on both sides of the guide structure. The guide structure includes a guide column 7 fixedly connected to the bottom of the lifting beam 6. The guide column 7 cooperates with the guide sleeve 13 rigidly connected to the frame 14. The guide column 7 is a square guide rod. The assembly gap between the guide column 7 and the guide sleeve 13 is reasonable, and the guide column 7 can slide along the guide sleeve 13.

[0024] The two ends of the lifting beam 6 are hingedly connected with the stabilizing rod 11, and the roller shaft 11-1 of the stabilizing rod 11 is locked by the groove surface 23-1 of the toothed lock strip of the locking structure. Rollers 11-2 are arranged at both ends of the roller shaft 11-1, and L-shaped limit grooves 24 adapted to the rollers are arranged on both sides of the toothed lock strip 23. The limit grooves 24 limit the upward, downward and lateral displacement of the rollers. The toothed lock strip 23 is driven by the electric push rod 22 to withstand the acceleration generated during starting and deceleration, and reduce the radial force on the hydraulic cylinder 10. When the lifting beam 6 rises, it drives the hinge point on the stabilizing rod 11 to move upward, and the roller shaft at the lower part of the stabilizing rod 11 will slide on the surface of the toothed lock strip. Because the toothed lock strip 23 has multiple teeth, when the shaft When the lifting beam 6 moves to the most concave part of the teeth, the shaft padlock at the lower part of the stabilizing bar 11 is successfully locked, so the lifting beam 6 can be padlocked at multiple positions. Due to the tooth shape, the lifting beam 6 can only rise in one direction and cannot fall. If the lifting beam 6 needs to fall, the lifting beam 6 first rises for a section to release the locking force, and then the electric push rods 22 installed on both sides work to push open the toothed locking strips 23, the stabilizing bar 11 is unlocked, and the lifting beam 6 can fall. When the lifting beam 6 rises to the highest point and is padlocked, the structure is stable at this time, ensuring that the sectioned lifting is stable to a suitable height and the transportation process is safe. The stabilizing bar 11 can bear part of the load. If the hydraulic system fails at this time, the padlock structure can also ensure stability and high safety.

[0025] A driving wheel assembly 15 and a driven wheel assembly 21 are respectively mounted on both sides of the bottom of the frame 14. An absolute encoder is arranged on the driven wheel assembly. Magnetic nails are arranged on the track every 50 meters to correct the error of the absolute encoder in measuring the travel distance of the trolley, so as to realize the precise positioning of the trolley. Guide wheel assemblies 12 are arranged on both sides of the upper surface of the frame 14, which slide on the side walls of the tunnel to prevent the trolley from tilting.

[0026] A PLC control box is provided on one side of the frame, in which a frequency converter, PLC, and remote control receiver are installed. A proportional speed regulating valve is provided in the PLC control box. A hydraulic pump station is installed on the other side of the frame, and a displacement sensor is installed on the lifting beam.

[0027] Each hydraulic lifting vehicle is equipped with a hydraulic system including a hydraulic pump station and a hydraulic cylinder to provide hydraulic power. The lifting beam is equipped with a displacement sensor to detect the lifting height. The flow rate is adjusted by feedback-controlling the proportional speed regulating valve to achieve synchronous lifting of each lifting beam.

[0028] Transportation process:

[0029] When all the skeletons of the thin plate segment line are assembled, the indoor crane 1 will cross the channel to transport the single sheet to the first station of the segment production line. The stations on the segment production line include the installation and welding of T-profiles, the assembly and welding of surrounding walls and groove walls. Each station is equipped with a dedicated installation service gantry 2 for the assembly and welding of components. At the last station of the segment production line, the indoor crane 1 is used to move the segment horizontally and transport it to the outfitting line. The segment logistics system is mainly composed of multiple groups of hydraulic lifting trolleys 20. Three trolleys are defined as one group. The three trolleys in each group are connected together by a coupling 19. Two groups are arranged in each row longitudinally on the entire production line (see Figure 2 ), 6 rows horizontally, a total of 36 trolleys form a set of trolleys (see Figure 1 ), the trolley is a heavy-duty transport trolley with steel structure, which can lift and transport sections on the production line. The lifting beam of each trolley unit is independently controlled, and a group of 3 trolleys share a hydraulic pump station for oil supply.

[0030] 1. When not in working state:

[0031] The trolley tracks are buried underground, and the top surface of each trolley is flush with the ground when not in operation (see Figure 6 ), there are no obvious protrusions in the workshop floor logistics system.

[0032] The hydraulic lifting trolley 20 moves in the reserved pit 17. To ensure the integrity of the workshop floor, the top of the pit needs to be blocked, and a detachable cover plate 16 is used. The cover plate usually blocks the pit 17. When the hydraulic lifting trolley 20 is inspected, the cover plate can be removed and the hydraulic lifting trolley 20 can be taken out for maintenance. The cover plate structure design can withstand the requirements of manning or passing vehicles according to user needs. At the same time, the hydraulic lifting trolley needs to push the lifting beam out of the ground to move, so a gap is left between the two cover plates for the lifting of the lifting beam.

[0033] 2. When in working state:

[0034] Each car group has its own independent drive device and controller. When the segment needs to be transported, the lifting beam of the car is pushed out of the ground by the hydraulic cylinder to support the segment (see Figure 8 ).

[0035] At the first workstation, under the command of the control system, the hydraulic lift trolley receives the transport command to drive the motor, moves synchronously in the tunnel track, arrives below the designated workstation segment position, and at the same time feeds back the hydraulic lift trolley arrival information to the control system.

[0036] All hydraulic lifting trolleys are in place, and each trolley is equipped with a set of lifting beams 6. The control system issues a lifting command, the hydraulic pump station works, the hydraulic cylinder 10 acts, all hydraulic lifting trolleys are lifted, the lifting beams 6 extend out of the ground to contact the sections, and each group of hydraulic lifting trolleys synchronously lifts the ship sections 5 to the set height (see Figure 8 ), the displacement sensor detects whether the lifting height meets the requirement and feeds back to the proportional speed regulating valve. The proportional speed regulating valve adjusts the flow rate of each oil cylinder. If it reaches the requirement, the lifting action is completed. If it does not reach the requirement, the oil cylinder continues to work to reach the lifting height. During the lifting process, the roller shaft at the lower end of the stabilizer bar slides along the toothed lock bar groove surface of the lock tooth weldment. The electric push rod is in the initial unextended state. The lock tooth weldment will always contact the padlock shaft due to gravity. When it is lifted to the highest point, the roller shaft is exactly located at the toothed lock bar groove surface of the lock tooth weldment, which is the padlock state.

[0037] When the height and pressure of all hydraulic lifting trolleys meet the set requirements and the mechanical padlock is completed, the operator issues a travel command, and the vehicle group is driven by the travel motor to move forward synchronously at the required speed until it reaches the target workstation.

[0038] After arriving at the work station, the hydraulic cylinder 10 rises a short distance to release the contact force between the roller shaft and the groove surface of the toothed support strip. At this time, the electric push rod 22 lifts the toothed lock strip, the stabilizer bar 11 is unlocked, and the lifting beam 6 of the hydraulic lifting trolley 20 descends by hydraulic force. The displacement sensor detects whether the hydraulic cylinder has dropped to the zero position. If not, the pump station continues to work until it drops to the zero position. The electric push rod descends, the locked weldment falls back and resets, and is put back on the ground in sections for assembly of profiles and components.

[0039] After the hydraulic lift trolley is lowered to the lowest position (see Figure 3 ), and moves to the next target station according to the control system instructions. In the entire production line, the sections are assembled and manufactured on the ground at each station. After completing the designated manufacturing work at a certain station, it can be lifted and transported to the subsequent station at any time using a hydraulic lift, thus realizing the segmented longitudinal logistics.

Claims

1. A transportation line for manufacturing luxury cruise ships in sections, characterized by: It includes a traveling crane, a segmented logistics system and an assembly service gantry, the segmented logistics system includes a hydraulic lifting trolley and a track, the track is provided with a hydraulic lifting trolley that runs in a straight line, synchronously and side by side, the hydraulic lifting trolleys are connected by a coupling, the track is located in a tunnel, the hydraulic lifting trolley runs on the steel rails in the tunnel below the ground, the side walls and the top of the tunnel are laid with steel plates and cover plates respectively, the hydraulic lifting trolley is under the cover plate, the hydraulic lifting trolley includes a jacking beam panel located on the cover plate, the middle part of the jacking beam panel is connected to the jacking beam by a pin hinge, the top of the jacking beam is arc-shaped, the jacking beam panel is straight, and the top The lifting beam is connected to the frame through the guide structures on both sides, the lifting beam is driven by the hydraulic cylinders on both sides of the guide structure, the two ends of the lifting beam are hinged with stabilizing bars, the roller shaft of the stabilizing bar is locked by the groove surface of the toothed lock strip of the locking structure, rollers are provided at both ends of the roller shaft, L-shaped limit grooves matched with the rollers are provided on both sides of the toothed lock strip, the toothed lock strip is driven by an electric push rod, a driving wheel assembly and a driven wheel assembly are respectively installed on both sides of the bottom of the frame, the lifting beam panel is lower than the ground, the guide structure includes a guide column fixedly connected to the bottom of the lifting beam, and the guide column cooperates with a guide sleeve rigidly connected to the frame.

2. A transportation assembly line for manufacturing luxury cruise ship sections according to claim 1, characterized in that: Guide wheel assemblies are arranged on both sides of the upper surface of the frame.

3. A transportation assembly line for manufacturing luxury cruise ship sections according to claim 1, characterized in that: The tracks are equally spaced.

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