A pallet jig tooling for hull assembly line and its usage method

Abstract

This invention discloses a pallet jig tooling for a ship hull assembly line and its usage method, relating to the field of pallet jig tooling technology. It includes a tooling frame with multiple support columns arranged at intervals in the transverse and longitudinal directions fixed to its upper end. Multiple lifting support seats are fixed to the front and rear ends of the tooling frame, and each lifting support seat has a lifting hole. This invention involves lifting the pallet jig tooling onto a flat factory assembly line. The support columns of the tooling frame sequentially arrange the ship hull assembly components, such as the jig plates, rib frames, transverse and longitudinal wall structures, and outer plate structures, gradually completing the assembly and welding of the ship hull. The pallet jig tooling of this invention can be transported and reused. When there is insufficient jig space in a curved factory, the problem of uneven jig space distribution can be solved by using the pallet jig tooling in a flat factory.

Description

Technical Field

[0001] This invention relates to the field of pallet rack tooling technology, and in particular to a pallet rack tooling for ship hull assembly line and its usage method. Background Technology

[0002] Shipyards typically use a fixed configuration of jigs / riggers for each area of ​​hull assembly. However, the proportion of straight and curved sections varies depending on the ship type being built. This leads to a mismatch between the allocated ratio of straight and curved jigs and the proportion of straight and curved sections in the corresponding ship type, resulting in uneven jig allocation and uneven production output across different construction areas. Generally, for ship types with significant variations in outer hull curvature, there are fewer straight sections and more curved sections compared to conventional ships. Consequently, during construction, there may be insufficient jigs / riggers in curved hull workshops, causing production delays, while an excess of jigs / riggers in straight hull assembly lines leads to resource waste.

[0003] During the construction cycle, when the available jig spaces for the curved workshop are insufficient or cannot meet the production schedule, the most common solution is to temporarily add jig spaces at suitable sites to alleviate the production pressure of hull assembly for the curved workshop. However, temporarily adding jig spaces to meet the needs of curved section assembly or hull assembly with protruding jig plates presents several problems and difficulties: First, adding jig spaces is difficult to achieve due to site location limitations; second, the added temporary jigs are generally fixed, disposable jigs, resulting in high construction costs and low efficiency; third, the temporarily added curved jigs do not fundamentally solve the problem of uneven production volume at different construction stations within the same production cycle; and fourth, fixed jigs are constrained by the ground foundation layout of the location and the supporting facilities and equipment in the jig area, making convenient and flexible production and construction impossible. Summary of the Invention

[0004] The purpose of this invention is to provide a pallet jig tooling for a ship hull assembly line and its usage method, aiming to solve the technical problem that fixed jigs in the prior art cannot be circulated and transported and cannot be recycled.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: A pallet frame fixture for a ship hull assembly line includes a fixture frame, with multiple support columns arranged at intervals in the transverse and longitudinal directions fixed to the upper end of the fixture frame, and multiple lifting support seats fixed to the front and rear ends of the fixture frame, with lifting holes provided on the lifting support seats.

[0006] Preferably, the tooling frame includes multiple longitudinal beams spaced apart front and rear, and a crossbeam is fixedly connected between the left and right ends of the two outer longitudinal beams. The two longitudinal beams and the two crossbeams form a square, and multiple connecting beams spaced apart left and right are fixedly connected between adjacent longitudinal beams.

[0007] Preferably, multiple reinforcing beams spaced apart on the left and right are fixed between two adjacent longitudinal beams.

[0008] Preferably, the crossbeams, longitudinal beams, and connecting beams are I-beams, and the two ends of the reinforcing beams are respectively fixed to the webs of two adjacent longitudinal beams.

[0009] Preferably, the hoisting support includes a support base plate fixed to the lower flange of the crossbeam, a hoisting web plate fixed to the support base plate, and upright plates fixed to the support base plate and disposed on both sides of the hoisting web plate, with hoisting holes opened on the hoisting web plate.

[0010] Preferably, the inner sides of the vertical plate and the hoisting web are both fixed to the web of the crossbeam, and the upper and lower ends of the vertical plate and the hoisting web are respectively fixed to the upper and lower flanges of the crossbeam.

[0011] Preferably, multiple guardrails are fixedly connected at intervals on the crossbeam and the two outer longitudinal beams.

[0012] Preferably, the guardrail includes a seat plate fixed between the upper and lower webs of a crossbeam or longitudinal beam, a base plate fixed to the seat plate, and a guardrail post fixed to the upper end of the base plate.

[0013] Preferably, the crossbeams, longitudinal beams, and connecting beams are divided into multiple square areas, and the fall protection net covers the square areas. The two sides of the fall protection net are respectively fixed to the upper flanges of two adjacent longitudinal beams.

[0014] A method for using a pallet rack tooling includes the following steps: Step 1: After transferring the pallet rack tooling to the transport channel of the flatbed factory using a flatbed transport vehicle, store it using supports; Step 2: Use a factory crane to lift the pallet frame fixture and place it on the support beam of the assembly line in the flat factory building; Step 3: Measure and level the support columns; Step 4: In accordance with the hull assembly construction process requirements, arrange the hull assembly components such as the jig plates, rib frames, transverse and longitudinal wall structures, and outer plate structures on the pallet jig tooling in sequence, and gradually complete the assembly and welding work of the hull assembly. Step 5: According to the requirements of the factory building's tire position, the pallet tire frame tooling is lifted by the factory building's hydraulic transport trolley to realize the displacement of the ship hull assembly on the flat factory building support beam; Step Six: After the hull assembly is completed in the flat workshop, the pallet frame tooling is lifted by the hydraulic transport trolley in the workshop to move the hull assembly to the lower tire position. Then, the pallet frame tooling is lifted by the hydraulic lifting device to lift the lower tire of the hull assembly. The pallet frame tooling is then moved to the support for temporary storage. Step 7: The completed hull assembly is transported to the subsequent construction site by flatbed truck for large-scale assembly. Step 8: After the hull assembly participates in the subsequent large-scale construction, the pallet frame tooling is transferred to the flatbed workshop by flatbed transport vehicle and hoisted onto the support beam of the flatbed workshop assembly line for reuse.

[0015] After adopting the above technical solution, the beneficial effects of the present invention are: 1. This invention involves hoisting a pallet jig tooling onto a flat factory assembly line. The tooling frame's supporting columns sequentially arrange hull structural components such as the jig plate, rib frame, transverse and longitudinal wall structures, and outer plating, gradually completing the hull assembly and welding work. The pallet jig tooling of this invention can be transported and reused. When there is insufficient jig space in a curved factory, the problem of uneven jig space distribution can be solved by using the pallet jig tooling in a flat factory.

[0016] 2. The tooling frame includes longitudinal beams, transverse beams, and connecting beams, giving it a square structure. The connecting beams support the spaced longitudinal beams, increasing the frame's strength. I-beams are used for the transverse beams, longitudinal beams, and connecting beams, which reduces the frame's weight while still meeting structural requirements. The addition of reinforcing beams further enhances the frame's strength.

[0017] 3. By fixing the base plate and reinforcing plate to the crossbeam, the strength of the hoisting support can be improved. The upright plates, positioned on both sides of the hoisting web, prevent deformation of the hoisting web. The upright plates and the hoisting web are fixed to the web and flanges of the crossbeam, increasing the connection range and enhancing the connection strength between the hoisting support and the crossbeam.

[0018] 4. The installation of guardrails can protect construction workers. The seat plate facilitates the fixing of the guardrails to the work equipment frame. The guardrail posts protect construction workers and prevent them from falling. The fall protection net also prevents construction workers from falling.

[0019] 5. By adopting the above-mentioned method of using pallet jig tooling, it is possible to realize the construction of irregularly shaped segmented structures of the outer plate, hull assembly with edge-protruding structures on the segmented platform base surface, and small-sized assembly in the flat workshop assembly line construction station; it solves the problem of uneven material quantity in the construction workshop caused by the different proportions of various types of structural assembly due to the construction of different ship types, provides a construction option for segmented assembly line construction, further improves production efficiency, and can meet the needs of hull assembly component construction, movement, transportation and temporary storage. Attached Figure Description

[0020] Figure 1 This is a top view of the pallet jig tooling for a ship hull assembly line according to the present invention. Figure 2 yes Figure 1 An enlarged structural diagram at point A; Figure 3 This is a side view of the pallet jig tooling for a ship hull assembly line according to the present invention. Figure 4 This is a cross-sectional structural diagram of the beam; Figure 5 This is a schematic diagram of the connection structure between the longitudinal beams and the reinforcing beams; Figure 6 This is a side sectional view of the hoisting support and crossbeam. Figure 7 It is a top-view sectional structural diagram of the hoisting support and the crossbeam; Figure 8 This is a schematic diagram of the connection structure between the guardrail and the longitudinal beam; Figure 9 This is a schematic diagram of the connection structure between the fall protection net and the tooling frame; Figure 10 This is a schematic diagram of the temporary support, storage, and transportation of pallet rack tooling; Figure 11 This is a schematic diagram illustrating the use of pallet frame fixtures in the construction / lifting and relocation of workstations on a flat factory assembly line. Figure 12 This is a schematic diagram of the use of the pallet frame tooling in the tire lifting and unloading station of the assembly line in a flat factory; Figure 13 This is a schematic diagram illustrating the use of pallet racks and tooling to support the assembly and transportation of the ship's hull.

[0021] In the diagram, the components are: 1. Tooling frame; 2. Support column; 3. Lifting support seat; 4. Longitudinal beam; 5. Transverse beam; 6. Connecting beam; 7. Reinforcing beam; 8. Upper flange; 9. Lower flange; 10. Web plate; 11. Support base plate; 12. Lifting web plate; 13. Vertical plate; 14. Lifting hole; 15. Guardrail; 16. Seat plate; 17. Base; 18. Guardrail column; 19. Fall protection net; 20. Support pier; 21. Support beam; 22. Hull assembly; 23. Flatbed transport vehicle; 24. Hydraulic transport trolley; 25. Hydraulic jacking device. Detailed Implementation

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] The orientations mentioned in this specification refer to the orientation of the pallet jig tooling for the ship hull assembly line and its usage method during normal operation. They do not limit the orientation during storage and transportation, but only represent relative positional relationships, not absolute positional relationships.

[0024] Example 1: like Figures 1 to 9 As shown, a pallet jig fixture for a ship hull assembly line includes a fixture frame 1. Multiple support columns 2, preferably channel steel, are fixedly connected to the upper end of the fixture frame 1 at intervals in the transverse and longitudinal directions. Multiple lifting support seats 3 are fixedly connected to the front and rear ends of the fixture frame 1, and each lifting support seat 3 has a lifting hole 14. The support columns 2 are welded to the fixture frame 1. There are four lifting support seats 3, respectively located at the four corners of the fixture frame 1, and the lifting support seats 3 are welded to the fixture frame 1.

[0025] In use, the pallet jig tooling is hoisted onto the assembly line in a flat workshop. The supporting columns 2 of the tooling frame 1 sequentially arrange the hull structural components 22, including the jig plates, rib frames, transverse and longitudinal wall structures, and outer plating structures, gradually completing the assembly and welding of the hull assembly 22. The pallet jig tooling of this invention can be transported and reused. When there is insufficient jig space in a curved workshop, the problem of uneven jig space distribution can be solved by using the pallet jig tooling in a flat workshop.

[0026] The tooling frame 1 includes multiple longitudinal beams 4 spaced apart front to back. A crossbeam 5 is fixedly connected to the left and right ends of the two outermost longitudinal beams 4, forming a square between the two longitudinal beams 4 and the two crossbeams 5. Multiple connecting beams 6 spaced apart left to right are fixedly connected between adjacent longitudinal beams 4. The crossbeams 5, longitudinal beams 4, and connecting beams 6 are welded together. The tooling frame 1, including the longitudinal beams 4, crossbeams 5, and connecting beams 6, forms a square structure. The connecting beams 6 support the spaced longitudinal beams 4, increasing the strength of the tooling frame 1.

[0027] Multiple reinforcing beams 7, spaced apart on the left and right, are fixedly connected between two adjacent longitudinal beams 4. The reinforcing beams 7 are welded to the longitudinal beams 4, and the reinforcing beams 7 are spaced apart from the connecting beams 6. The supporting columns 2 are arranged in multiple rows and columns, with each row of supporting columns 2 welded to the crossbeams 5, connecting beams 6, reinforcing beams 7, and longitudinal beams 4 respectively. The setting of reinforcing beams 7 can further improve the strength of the tooling frame 1.

[0028] Among them, the crossbeam 5, longitudinal beam 4, and connecting beam 6 are I-beams, and the two ends of the reinforcing beam 7 are fixed to the web plates 10 of the two adjacent longitudinal beams 4, respectively. The end of the reinforcing beam 7 has a notch, and the lower side of the end of the reinforcing beam 7 extends between the upper and lower flange plates 9 of the connecting beam 6. The top of the reinforcing beam 7 is aligned with the top of the longitudinal beam 4, and the reinforcing beam 7 is welded to the web plate 10 of the connecting beam 6 and the upper flange plate 8 of the longitudinal beam 4. The use of I-beams for the crossbeam 5, longitudinal beam 4, and connecting beam 6 can reduce the weight of the tooling frame 1 while meeting its requirements. The addition of the reinforcing beam 7 can further improve the strength of the tooling frame 1.

[0029] The hoisting support 3 includes a support base plate 11 fixed to the lower flange 9 of the crossbeam 5, a hoisting web plate 12 fixed to the support base plate 11, and upright plates 13 fixed to the support base plate 11 and located on both sides of the hoisting web plate 12. Hoisting holes 14 are formed in the hoisting web plate 12. The support base plate 11 is welded to the crossbeam 5, and the hoisting web plate 12 and upright plates 13 are welded to the support base plate 11. By fixing the base plate and reinforcing plates to the crossbeam 5, the strength of the hoisting support 3 can be improved. The upright plates 13 located on both sides of the hoisting web plate 12 can prevent deformation of the hoisting web plate 12.

[0030] The inner sides of the vertical plate 13 and the lifting web plate 12 are both fixed to the web plate 10 of the crossbeam 5. The upper and lower ends of the vertical plate 13 and the lifting web plate 12 are respectively fixed to the upper flange plate 8 and the lower flange plate 9 of the crossbeam 5. The inner sides of the vertical plate 13 and the lifting web plate 12 extend between the upper and lower flange plates 9 of the crossbeam 5, and the vertical plate 13 and the lifting web plate 12 are welded to the crossbeam 5. The vertical plate 13 and the lifting web plate 12 are fixed to the web plate 10 and flange plates of the crossbeam 5, which can increase the connection range and improve the connection strength between the lifting support 3 and the crossbeam 5.

[0031] The bottom surface of the support base plate 11 is aligned with the bottom surface of the crossbeam 5. Aligning the bottom surface of the support base plate 11 with the bottom surface of the crossbeam 5 prevents the support base plate 11 from extending beyond the bottom of the tooling frame 1 and affecting the placement of the tooling frame 1.

[0032] Multiple guardrails 15 are fixedly connected at intervals to the crossbeam 5 and the two outer longitudinal beams 4. The guardrails 15 are spaced around the perimeter of the tooling frame 1, surrounding it. The guardrails 15 are installed to protect construction workers.

[0033] The guardrail 15 includes a base plate 16 fixed between the upper and lower web plates 10 of the horizontal beam 5 or the longitudinal beam 4. A base 17 is fixed to the base plate 16, and a guardrail post 18 is fixed to the upper end of the base 17. The base plate 16 is welded to the horizontal beam 5 and the longitudinal beam 4, the base plate is welded to the base plate 16, and the guardrail post 18 is welded to the base 17. The base plate 16 facilitates the fixing of the guardrail 15 to the tooling frame 1. The guardrail post 18 protects construction workers and prevents them from falling.

[0034] The structure comprises multiple square areas divided by the crossbeams 5, longitudinal beams 4, and connecting beams 6. Fall protection nets 19 cover these square areas, with both sides of the nets fixed to the upper flanges 8 of adjacent longitudinal beams 4. The fall protection nets 19 are installed to prevent construction workers from falling.

[0035] Example 2: like Figures 1 to 13 As shown, a method for using the pallet rack tooling of Embodiment 1 includes the following steps: Step 1: After using the flatbed transport vehicle 23 to transfer the pallet frame tooling to the transport channel of the flat factory building, store it using the support 20; Step 2: Use the factory crane to lift the pallet frame fixture and place it on the support beam 21 of the flat factory assembly line; Step 3: Measure and level the support column 2; Step 4: In accordance with the construction process requirements of hull assembly 22, the hull structural components such as the jig plate, rib frame, transverse and longitudinal wall structure, and outer plate structure of hull assembly 22 are arranged sequentially on the pallet jig tooling, and the assembly and welding work of hull assembly 22 is completed step by step. Step 5: According to the requirements of the factory building, the pallet frame tooling is lifted by the factory building hydraulic transport trolley 24 to realize the displacement of the hull assembly 22 on the flat factory building support beam 21; Step Six: After the hull assembly 22 completes its construction work in the flat workshop, the pallet frame tooling is lifted by the workshop hydraulic transport trolley 24 and moved to the lowering position. Then, the pallet frame tooling is lifted by the hydraulic lifting device 25 to lift the lowering position of the hull assembly 22 and move the pallet frame tooling to the support 20 for temporary storage. Step 7: The completed hull assembly 22 is transported to the subsequent construction site by flatbed transport vehicle 23 for large-scale assembly; Step 8: After the hull assembly 22 participates in the subsequent large-scale assembly, the pallet frame tooling is transferred to the flatbed workshop by flatbed transport vehicle 23 and hoisted onto the support beam 21 of the flatbed workshop assembly line for reuse.

[0036] Using the above method, it is possible to construct hulls with irregularly shaped outer plate sections, hull platforms with edge-probing structures, and small-sized hulls on a flat-panel assembly line. This solves the problem of uneven material distribution in the construction workshop caused by the different proportions of various structural assemblies due to the construction of different ship types. It provides a construction option for hull sections to be built on a flat-panel assembly line, further improving production efficiency and meeting the needs of hull assembly component construction, movement, transportation, and temporary storage.

[0037] Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A method for using a pallet rack tooling, characterized in that, A pallet frame tooling for a ship hull assembly line includes a tooling frame, with multiple support columns arranged at intervals in the horizontal and vertical directions fixed to the upper end of the tooling frame, and multiple lifting support seats fixed to the front and rear ends of the tooling frame, with lifting holes provided on the lifting support seats. The method of using pallet rack fixtures includes the following steps: Step 1: After transferring the pallet rack tooling to the transport channel of the flatbed factory using a flatbed transport vehicle, store it using supports; Step 2: Use a factory crane to lift the pallet frame fixture and place it on the support beam of the assembly line in the flat factory building; Step 3: Measure and level the support columns; Step 4: In accordance with the hull assembly construction process requirements, the hull assembly components, including the jig plates, rib frames, transverse and longitudinal wall structures, and outer plate structures, are sequentially arranged on the pallet jig fixture, and the assembly and welding work of the hull assembly is completed step by step. Step 5: According to the requirements of the factory building's tire position, the pallet tire frame tooling is lifted by the factory building's hydraulic transport trolley to realize the displacement of the ship hull assembly on the flat factory building support beam; Step Six: After the hull assembly is completed in the flat workshop, the pallet frame fixture is lifted by the workshop hydraulic transport trolley to move the hull assembly to the lower fixture position. Then, the pallet frame fixture is lifted by the hydraulic lifting device to lift the lower fixture of the hull assembly. The pallet frame fixture is then moved to the support for temporary storage. Step 7: The completed hull assembly is transported to the subsequent construction site by flatbed truck for large-scale assembly. Step 8: After the hull assembly participates in the subsequent large-scale construction, the pallet frame tooling is transferred to the flatbed workshop by flatbed transport vehicle and hoisted onto the support beam of the flatbed workshop assembly line for reuse.

2. The method of using a pallet rack tooling as described in claim 1, characterized in that, The tooling frame includes multiple longitudinal beams spaced apart front and back. A crossbeam is fixed between the left and right ends of the two outer longitudinal beams. The two longitudinal beams and the two crossbeams form a square. Multiple connecting beams spaced apart left and right are fixed between adjacent longitudinal beams.

3. A method for using a pallet rack tooling as described in claim 2, characterized in that, Multiple reinforcing beams spaced apart on the left and right are fixedly connected between two adjacent longitudinal beams.

4. A method for using a pallet rack tooling as described in claim 3, characterized in that, The crossbeams, longitudinal beams, and connecting beams are I-beams, and the two ends of the reinforcing beam are respectively fixed to the webs of two adjacent longitudinal beams.

5. A method for using a pallet rack tooling as described in claim 4, characterized in that, The hoisting support includes a support base plate fixed to the lower flange of the crossbeam, a hoisting web plate fixed to the support base plate, and upright plates fixed to the support base plate and disposed on both sides of the hoisting web plate. The hoisting holes are opened on the hoisting web plate.

6. A method for using a pallet rack tooling as described in claim 5, characterized in that, The inner sides of the vertical plate and the hoisting web are both fixed to the web of the crossbeam, and the upper and lower ends of the vertical plate and the hoisting web are respectively fixed to the upper and lower flanges of the crossbeam.

7. A method for using a pallet rack tooling as described in claim 4, characterized in that, Multiple guardrails are fixed at intervals on the crossbeam and the two outer longitudinal beams.

8. A method for using a pallet rack tooling as described in claim 7, characterized in that, The guardrail includes a base plate fixed between the upper and lower web plates of a horizontal beam or longitudinal beam, a base plate fixed to the base plate, and a guardrail post fixed to the upper end of the base plate.

9. A method for using a pallet rack tooling as described in claim 4, characterized in that, The crossbeams, longitudinal beams, and connecting beams are divided into multiple square areas, and the fall protection net covers the square areas. The two sides of the fall protection net are respectively fixed to the upper flanges of two adjacent longitudinal beams.

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