Ship assembly transfer carriage

Abstract

The application discloses a ship assembly transfer frame, which comprises a frame body, the frame body comprising a connecting frame and a plurality of supporting legs, the top surface of the connecting frame forming a connecting surface; a plurality of trays, each tray being provided with a placing groove for placing a small assembly, the small assembly being an assembly with a projection size on a horizontal plane being less than or equal to the opening size of the placing groove; wherein the tray is detachably connected to the connecting surface, and when the tray is detached from the connecting surface, the connecting surface forms a supporting surface for placing a large assembly, the large assembly being an assembly with a projection size on a horizontal plane being greater than the opening size of the placing groove. Through the detachable cooperation between the tray and the connecting surface, the quick switching between the two working conditions of the tray bearing a small assembly and the connecting surface bearing a large assembly is realized, different transfer frames for different sizes of assemblies are not needed, the number of transfer frames and the replacement time are reduced, and the overall progress of ship building is improved.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding technology, and in particular to a ship assembly and transfer rack. Background Technology

[0002] During shipbuilding, the hull is pre-assembled from a large number of components into various stages (such as small stages, medium stages, and large stages), and then these stages are sequentially hoisted to the slipway or dry dock for final assembly. Before final assembly, the assemblies need to be transferred between different processes using transfer racks.

[0003] Currently, the transfer of ship assembly parts mainly utilizes dedicated transfer racks, meaning that different transfer racks are designed for different sizes and types of parts. In practice, workers select a suitable transfer rack from the site based on the dimensions of the part to be transferred, hoist the part onto the rack and secure it, and then use transport equipment (such as AGVs, forklifts, etc.) to move it to the next workstation. When the type or size of the part changes, the current transfer rack must be removed, and a new transfer rack must be selected and arranged.

[0004] The obvious shortcomings of the above method are: due to the wide variety of ship assembly types and large size range, a large number of special transfer racks of different specifications need to be equipped on site, which occupies a lot of site resources; when transferring multiple sizes of assemblies in batches, the frequent replacement of transfer racks is cumbersome and time-consuming, which seriously restricts the flow speed of assembly and thus affects the overall efficiency of ship construction. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defect in the prior art that different transport frames need to be changed for different quantities and sizes of ships during assembly and transfer, thus affecting the efficiency of ship construction, and to provide a ship assembly and transfer frame.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] This invention provides a ship assembly and transfer rack, the ship assembly and transfer rack comprising:

[0008] The frame includes a horizontally extending connecting frame and a plurality of legs connected to the bottom of the connecting frame, the top surface of the connecting frame forming a connecting surface;

[0009] Multiple trays, each of which has a placement slot for placing small assemblies, wherein the small assemblies are assemblies whose projected size on the horizontal plane is less than or equal to the opening size of the placement slot;

[0010] The tray is detachably connected to the connecting surface, and when the tray is detached from the connecting surface, the connecting surface forms a supporting plane for placing a large assembly, wherein the large assembly is an assembly whose projected size on the horizontal plane is larger than the size of the opening of the placement slot.

[0011] In this design, when transporting small assemblies, the ship assembly transfer rack installs a pallet on the connecting surface, and the small assemblies are placed into the pallet's placement slot. The placement slot provides horizontal restraint to the small assemblies, ensuring they do not shift horizontally during transport. When transporting large assemblies, the pallet is removed from the connecting surface, which then serves as the support plane for the large assemblies. This detachable connection between the pallet and the connecting surface allows for rapid switching between two modes: pallet-supported small assemblies and connecting surface-supported large assemblies. This eliminates the need to replace different transfer racks for different assemblies, reducing the number of transfer racks required and the replacement time, improving assembly flow efficiency, and contributing to faster overall shipbuilding progress.

[0012] Preferably, the tray includes a base plate and two side plates connected to the base plate and spaced apart from each other, forming the placement groove between the two side plates. Each side plate has a plurality of mounting holes for fasteners to pass through to fix the group stand in the placement groove.

[0013] In this design, after the sub-assembly is placed in the placement slot, the side plates on both sides provide horizontal restraint, effectively constraining its displacement on the horizontal plane. Simultaneously, fasteners pass through mounting holes on the side plates and connect to the sub-assembly, locking it vertically within the placement slot. Through the combined effect of the horizontal restraint of the side plates and the vertical locking of the fasteners, the sub-assembly is restrained in multiple directions, maintaining a stable posture during transport and effectively preventing slippage, tilting, or detachment due to inertial forces, thus ensuring safe transport.

[0014] Preferably, a triangular plate is provided between the side plate and the bottom plate, one side of the triangular plate is fixedly connected to the side plate, and the other side of the triangular plate is fixedly connected to the bottom plate;

[0015] And / or, the tray further includes a support plate, one end of which is fixedly connected to the bottom surface of the base plate, and the other end of which is connected to the connecting surface.

[0016] In this design, a triangular plate is installed between the side plate and the bottom plate. The two right-angled sides of the triangular plate are fixedly connected to the side plate and the bottom plate respectively. Based on the stability principle of a triangular structure, the triangular plate provides oblique support to the connection node between the side plate and the bottom plate. When the side plate bears the lateral thrust generated by inertial forces during small-scale standing, the triangular plate converts a portion of this thrust into an axial force along its hypotenuse, which is then transmitted to the bottom plate. This effectively reduces the concentration of bending moment at the root of the side plate, preventing fatigue fracture or plastic deformation due to long-term alternating loads and extending the service life of the pallet. Furthermore, one end of the support plate is fixed to the bottom surface of the bottom plate, and the other end is connected to the connection surface. When the pallet is supported by small-scale standing, the support plate acts as a force-transmitting component, transferring the load downwards from the bottom plate to the connection surface. This prevents the bottom plate from bending due to excessive span, ensuring the load-bearing accuracy and structural stability of the pallet during long-term use.

[0017] Preferably, the connecting frame includes multiple crossbeams and multiple longitudinal beams. The multiple crossbeams are spaced apart along the width direction of the crossbeams, and multiple longitudinal beams are spaced apart between every two crossbeams along the length direction of the crossbeams. The support leg is connected to the crossbeam and is located on the extension line of the length direction of the longitudinal beam.

[0018] In this design, the connecting frame adopts a grid-like frame structure formed by intersecting horizontal and vertical beams. This significantly reduces material usage and lowers the frame's weight while ensuring sufficient support area at the connection surfaces. The supports are positioned along the extension lines of the vertical beams, aligning the support points with the beams vertically. Loads are transferred directly from the connection surfaces through the vertical beams to the supports, resulting in the shortest and most continuous force transmission path. This avoids additional bending stress on the horizontal beams, making the frame structure more structurally sound and improving its load-bearing capacity.

[0019] Preferably, the distance between any two adjacent legs along the length of the crossbeam is greater than a first preset value, and the distance between any two adjacent legs along the width of the crossbeam is greater than a second preset value. The first preset value and the second preset value are configured to allow the AGV to enter under the connecting frame.

[0020] In this design, a transfer space is created beneath the connecting frame, allowing AGVs to freely enter and exit. Once the assembly is placed on the connecting surface, the AGV can drive directly under the frame, and its top abuts against the bottom surface of the longitudinal beam, lifting the entire transfer frame and transporting it to the target workstation. This structure enables AGVs to enter or exit from multiple directions, either horizontally or vertically, improving the flexibility of the AGV's operating path during transfer and thus further enhancing the efficiency of assembly and transfer operations.

[0021] Preferably, the distance between the longitudinal beam that abuts against the AGV and is located on the outermost side along the length of the crossbeam and the edge of the AGV is not less than 250mm.

[0022] In this solution, when the AGV enters under the connecting frame, a gap of not less than 250mm is maintained between the longitudinal beam and the edge of the AGV. This gap provides sufficient safety margin for the AGV's inertial braking distance and path deviation. Even if the AGV undergoes slight displacement due to inertia or uneven ground during operation, it will not detach from the longitudinal beam, thus ensuring the reliability and safety of the AGV's operation.

[0023] Preferably, the longitudinal beams are symmetrical on both sides of the transverse beam along its length; and / or, the longitudinal beams are symmetrical on both sides of the transverse beam along its width.

[0024] In this design, the overall mass distribution of the connecting frame is symmetrical about its vertical planes in both length and width directions. When the assembly is placed on the connecting surface, if the center of gravity of the assembly is located in the central area of ​​the connecting surface, the forces on each longitudinal beam will be uniform, and there will be no eccentric loading. At the same time, when the AGV is lifted from the bottom, the reaction forces at each lifting point are evenly distributed, avoiding the tilting of the frame or the slippage of the assembly due to uneven force, thus ensuring the stability of the transfer process.

[0025] Preferably, multiple lifting horses are provided on the two outermost crossbeams along the width direction of the crossbeams, and the lifting horses are located on the extension line of the longitudinal beam.

[0026] In this design, when a crane is used to lift the transport frame, the slings are connected to the crane. Since the crane is positioned along the extension of the longitudinal beam, the lifting force is directly transmitted to the longitudinal beam via the crane. This reduces the moment between the nearest longitudinal beam and the crane, eliminating the need for the crossbeam to bear additional bending loads and preventing bending deformation due to the lifting force. Simultaneously, the cranes are spaced apart along the length of the crossbeam, ensuring balanced force distribution and maintaining a horizontal position for the transport frame during lifting, preventing slippage due to tilting.

[0027] Preferably, the connecting frame further includes a plurality of reinforcing plates, one side of each reinforcing plate being fixedly connected to the longitudinal beam and the other side of each reinforcing plate being fixedly connected to the cross beam.

[0028] In this design, the reinforcing plate forms a triangular support structure at the connection node between the longitudinal beam and the transverse beam. When the frame is subjected to assembly load, the reinforcing plate provides oblique support to the vertical connection node between the longitudinal beam and the transverse beam, effectively restricting the relative rotation between the longitudinal beam and the transverse beam, enhancing the bending stiffness and shear strength of the connection node, preventing fatigue cracking of the node weld under alternating load, and improving the overall structural strength and fatigue life of the connecting frame.

[0029] Preferably, the frame further includes multiple pads, each pad corresponding to each leg, and the pads are disposed at the bottom of the legs and are used to contact the ground.

[0030] In this design, the pad increases the contact area between the outriggers and the ground. Under the same load, the increased contact area reduces the pressure exerted by the outriggers on the ground, effectively preventing the transfer frame from sinking or collapsing on soft surfaces. Simultaneously, the pad acts as a transition layer between the outriggers and the ground, distributing the concentrated load from the outriggers to the ground, reducing the pressure per unit area on the ground, and ensuring the stability of the transfer frame under different ground conditions.

[0031] The positive and progressive effects of this invention are as follows:

[0032] This invention provides a ship assembly transfer rack. When transferring small assemblies, a pallet is installed on the connecting surface, and the small assemblies are placed into the placement slots on the pallet. The placement slots provide horizontal restraint to the small assemblies, ensuring that they do not shift horizontally during transfer. When transferring large assemblies, the pallet is detached from the connecting surface, which then serves directly as a support plane for the large assemblies. This detachable connection between the pallet and the connecting surface allows for rapid switching between two modes: pallet-supported small assemblies and connecting surface-supported large assemblies. This eliminates the need to change transfer racks for different assemblies of different sizes, reducing the number of transfer racks required and the replacement time, improving assembly flow efficiency, and contributing to faster overall shipbuilding progress. Attached Figure Description

[0033] Figure 1 This is a front view of the ship assembly and transfer frame and AGV assembly according to an embodiment of the present invention.

[0034] Figure 2 This is a side view of the ship assembly and transfer frame and AGV assembly according to an embodiment of the present invention.

[0035] Figure 3 This is a top view of the ship assembly and transfer frame and AGV assembly according to an embodiment of the present invention.

[0036] Figure 4 This is a front view of the ship assembly transfer rack, pallet, and AGV assembly according to an embodiment of the present invention.

[0037] Figure 5 This is a side view of the ship assembly transfer rack, pallet, and AGV assembly according to an embodiment of the present invention.

[0038] Figure 6 This is a front view of the tray according to an embodiment of the present invention.

[0039] Figure 7 This is a side view of the tray according to an embodiment of the present invention.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1000 ship assembly and transfer racks

[0042] Frame 1

[0043] Connector 11

[0044] 111 crossbeam

[0045] Longitudinal beam 112

[0046] Auxiliary beam 113

[0047] Reinforcing plate 114

[0048] 12 legs

[0049] Connection surface 13

[0050] Hanging Horse 14

[0051] 15 pads

[0052] Tray 2

[0053] Placement slot 21

[0054] Base plate 22

[0055] Side panel 23

[0056] Mounting hole 24

[0057] 25-degree triangle ruler

[0058] Support plate 26

[0059] AGV2000 Detailed Implementation

[0060] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments.

[0061] like Figures 1 to 7As shown, this embodiment provides a ship assembly transfer rack 1000, which includes a frame 1 and multiple trays 2. The frame 1 includes a horizontally extending connecting frame 11 and multiple supports 12 connected to the bottom of the connecting frame 11. The top surface of the connecting frame 11 forms a connecting surface 13. In this embodiment, the number of supports 12 is four, but this embodiment does not limit the number and is only for illustrative purposes. Each tray 2 is provided with a placement slot 21 for placing small assemblies. A small assembly is an assembly whose projected size on the horizontal plane is less than or equal to the opening size of the placement slot 21. Here, an assembly refers to an intermediate product pre-assembled from multiple hull parts for final assembly on a slipway or dock. The projected size on the horizontal plane refers to the length and width of the circumscribed rectangle obtained by projecting the assembly onto the horizontal plane; the opening size of the placement slot 21 refers to the length and width of the inner contour of the placement slot 21 on the horizontal plane. The tray 2 is detachably connected to the connecting surface 13, and when the tray 2 is removed from the connecting surface 13, the connecting surface 13 forms a support plane for placing a large assembly, which is an assembly whose projected size on the horizontal plane is larger than the opening size of the placement slot 21.

[0062] Thus, when transporting small assembly units, the ship assembly transfer rack 1000 installs pallet 2 on the connecting surface 13, and places the small assembly unit into the placement slot 21 of pallet 2. The placement slot 21 provides horizontal restraint for the small assembly unit, ensuring that it does not move horizontally during transport. When transporting large assemblies, pallet 2 is removed from the connecting surface 13, and the connecting surface 13 directly serves as a support plane for placing the large assembly unit. Through the detachable connection between pallet 2 and connecting surface 13, a single transfer rack can quickly switch between two working conditions: pallet 2 supporting small assemblies and connecting surface 13 supporting large assemblies. This eliminates the need to change transfer racks for different sizes of assemblies, reduces the number of transfer racks required and the replacement time, improves assembly flow efficiency, and helps to accelerate the overall progress of ship construction.

[0063] In this embodiment, the detachable connection between the tray 2 and the connecting surface 13 can be any one of bolt connection, snap connection, pin connection or slide groove connection, as long as the tray 2 can be detachably fixed to the connecting surface 13.

[0064] like Figure 4 and Figure 5 The diagram shows the assembly of pallet 2 and frame 1, i.e., the condition of the transport team in operation. The number of pallets 2 can be adjusted as needed; they can cover the entire connecting surface 13 or only a portion of it.

[0065] like Figure 6 and Figure 7As shown, the tray 2 includes a base plate 22 and two side plates 23 connected to the base plate 22 and spaced apart from each other. A placement groove 21 is formed between the two side plates 23. Each side plate 23 has a plurality of mounting holes 24 for fasteners to pass through to fix the small assembly in the placement groove 21. In this embodiment, each side plate 23 has two mounting holes 24.

[0066] Thus, after the small assembly is placed into the placement slot 21, the side plates 23 on both sides form a horizontal limit on the small assembly, effectively constraining its displacement on the horizontal plane. At the same time, fasteners pass through the mounting holes 24 on the side plates 23 and connect to the small assembly, locking it vertically within the placement slot 21. Through the combined action of the horizontal limit of the side plates 23 and the vertical locking of the fasteners, the small assembly is constrained in multiple directions, thereby maintaining a stable posture during transportation and effectively preventing the small assembly from slipping, tilting, or falling out due to inertial forces, ensuring safe transportation.

[0067] like Figure 7 As shown, a triangular plate 25 is provided between the side plate 23 and the bottom plate 22. One side of the triangular plate 25 is fixedly connected to the side plate 23, and the other side of the triangular plate 25 is fixedly connected to the bottom plate 22. Thus, the triangular plate 25 is provided between the side plate 23 and the bottom plate 22, and the two right-angled sides of the triangular plate 25 are fixedly connected to the side plate 23 and the bottom plate 22 respectively. Based on the stability principle of the triangular structure, the triangular plate 25 provides oblique support for the connection node between the side plate 23 and the bottom plate 22. When the side plate 23 is subjected to the lateral thrust generated by the inertial force of the small stand, the triangular plate 25 converts part of the thrust into an axial force along its hypotenuse and transmits it to the bottom plate 22. This effectively reduces the concentration of bending moment at the root of the side plate 23, prevents the side plate 23 from fatigue fracture or plastic deformation due to long-term exposure to alternating loads, and extends the service life of the pallet 2.

[0068] like Figure 6 and Figure 7 As shown, the pallet 2 also includes a support plate 26. One end of the support plate 26 is fixedly connected to the bottom surface of the base plate 22, and the other end of the support plate 26 is connected to the connecting surface 13. When the pallet 2 is erected under load, the support plate 26 acts as a force transmission component, transferring the load from the base plate 22 downwards to the connecting surface 13. This prevents the base plate 22 from bending and deforming due to excessive span, ensuring the load-bearing accuracy and structural stability of the pallet 2 during long-term use.

[0069] Specifically, the connecting frame 11 includes multiple crossbeams 111 and multiple longitudinal beams 112. The crossbeams 111 are spaced apart along their width, and multiple longitudinal beams 112 are spaced apart between every two crossbeams 111 along their length. Supports 12 are connected to the crossbeams 111 and located on the extension line of the longitudinal beams 112. Thus, the connecting frame 11 adopts a grid-like frame structure formed by the interlacing of crossbeams and longitudinal beams 112. This significantly reduces material usage and lowers the self-weight of the frame 1 while ensuring sufficient support area on the connecting surface 13. The supports 12 are located on the extension line of the longitudinal beams 112, aligning the support points of the supports 12 with the longitudinal beams 112 in the vertical direction. The load is directly transferred from the connecting surface 13 to the supports 12 via the longitudinal beams 112, resulting in the shortest and continuous force transmission path. This avoids the crossbeams 111 bearing additional bending stress, making the structural stress of the frame 1 more reasonable and improving its load-bearing capacity.

[0070] like Figure 3 As shown, in this embodiment, there are 3 crossbeams 111 and 14 longitudinal beams 112, all made of H300*300 profiles with an I-shaped cross-section. The quantities and materials mentioned above are for illustrative purposes only and are not intended to limit the quantity or materials.

[0071] Furthermore, such as Figure 3 As shown, an auxiliary beam 113 can be provided between two adjacent crossbeams 111. The auxiliary beam 113 is parallel to the crossbeams 111 and connected to the longitudinal beam 112 provided between the crossbeams 111. In this embodiment, there are two auxiliary beams 113. The auxiliary beams 113 can provide support for the longitudinal beam 112, preventing the longitudinal beam 112 from bending under load due to excessively large distances between the crossbeams 111 and excessive span.

[0072] Specifically, the distance between any two adjacent legs 12 along the length of the crossbeam 111 is greater than a first preset value, and the distance between any two adjacent legs 12 along the width of the crossbeam 111 is greater than a second preset value. These first and second preset values ​​are configured to allow the AGV2000 to enter below the connecting frame 11. That is, the distance between two legs 12 along the length of the crossbeam 111 is greater than the length of the AGV2000, and the distance between two legs 12 along the width of the crossbeam 111 is greater than the width of the AGV2000. Here, the AGV2000 is an Automated Guided Vehicle, a type of unmanned intelligent handling equipment. The AGV2000 penetrates the bottom of the frame 1, lifts it, and transports materials; it is a common device widely used in shipbuilding. In this embodiment, the first preset value is that the length of AGV2000 is 4500mm and the distance between the two legs 12 arranged along the length direction of the crossbeam 111 is 6000mm; the second preset value is that the width of AGV2000 is 2000mm and the distance between the two legs 12 arranged along the width direction of the crossbeam 111 is 2700mm.

[0073] Thus, a transfer space is formed below the connecting frame 11, allowing the AGV2000 to freely enter and exit. After being assembled and placed on the connecting surface 13, the AGV2000 can directly drive under the frame 1, and its top abuts against the bottom surface of the longitudinal beam 112, lifting the entire transfer frame and transporting it to the target workstation. This structure allows the AGV2000 to enter or exit from multiple directions, either horizontally or vertically, improving the flexibility of the AGV2000's operating path during transfer, thereby further improving the efficiency of assembly and transfer operations.

[0074] Specifically, the distance between the outermost longitudinal beam 112, which abuts against the AGV2000 and is located along the length of the crossbeam 111, and the edge of the AGV2000 is not less than 250mm. Thus, when the AGV2000 enters below the connecting frame 11, a gap of not less than 250mm is maintained between the longitudinal beam 112 and the edge of the AGV2000. This gap provides sufficient safety margin for the AGV2000's inertial braking distance and path deviation. Even if the AGV2000 experiences slight displacement due to inertia or uneven ground during operation, it will not detach from the longitudinal beam 112, ensuring the reliability and safety of the AGV2000's operation.

[0075] Specifically, the longitudinal beams 112 are symmetrical on both sides of the transverse beams 111 along their length; or, the longitudinal beams 112 are symmetrical on both sides of the transverse beams 111 along their width. Alternatively, preferably, the overall mass distribution of the connecting frame 11 is symmetrical about its vertical planes in both its length and width directions. When the assembly is placed on the connecting surface 13, if the center of gravity of the assembly is located in the central area of ​​the connecting surface 13, the forces on each longitudinal beam 112 are uniform, and no eccentric loading will occur; at the same time, when the AGV2000 is lifted from the bottom, the reaction forces at each lifting point are evenly distributed, avoiding tilting of the frame 1 or slippage of the assembly due to uneven force distribution, thus ensuring the stability of the transfer process.

[0076] Specifically, multiple lifting supports 14 are installed on the two outermost crossbeams 111 along the width direction of the crossbeams 111, with the lifting supports 14 located on the extension line of the longitudinal beams 112. When a crane is needed to lift the transport frame, the slings are connected to the lifting supports 14. Since the lifting supports 14 are located on the extension line of the longitudinal beams 112, the lifting force is directly transmitted to the longitudinal beams 112 during lifting. The moment between the nearest longitudinal beam 112 and the lifting support 14 is reduced, and the crossbeams 111 do not need to bear additional bending loads, thus avoiding bending deformation of the crossbeams 111 due to the lifting force. At the same time, the lifting supports 14 are spaced apart along the length direction of the crossbeams 111, so that the force on each lifting support 14 is balanced, ensuring that the transport frame maintains a horizontal posture during lifting and preventing slippage due to tilting.

[0077] In this embodiment, the number of hanging horses 14 is 8, but this embodiment is not limited to a specific number of hanging horses 14; it is merely an illustrative representation. Figure 3 As shown, the eight lifting horses 14 are symmetrically arranged relative to the vertical planes of the length and width of the frame 1. The lifting scheme must be designed to accommodate 150T and 300T cranes. The four lifting horses 14 on the left side of the diagram form one group, and the four lifting horses 14 on the right side form another group. Simultaneous lifting by both groups ensures smoother transport. The lifting horses 14 are designed to be embedded within the outer crossbeam 111, thus not occupying the loading area of ​​the transport device and avoiding interference with the wire ropes during lifting.

[0078] like Figure 3 As shown, the connecting frame 11 also includes multiple reinforcing plates 114, one side of which is fixedly connected to the longitudinal beam 112, and the other side of which is fixedly connected to the transverse beam 111. Thus, the reinforcing plates 114 form a triangular support structure at the connection node between the longitudinal beam 112 and the transverse beam 111. When the frame 1 bears the assembly load, the reinforcing plates 114 provide oblique support to the vertical connection node between the longitudinal beam 112 and the transverse beam 111, effectively limiting the relative rotation between the longitudinal beam 112 and the transverse beam 111, enhancing the bending stiffness and shear strength of the connection node, preventing fatigue cracking of the node weld under alternating loads, and improving the overall structural strength and fatigue life of the connecting frame 11.

[0079] likeFigure 1 and Figure 2 As shown, the frame 1 also includes multiple pads 15, each pad 15 corresponding to one of each support leg 12, and the pad 15 is disposed at the bottom of the support leg 12, serving to contact the ground. In this embodiment, there are eight pads 15, each corresponding to one of the eight support legs 12. The pads 15 increase the contact area between the support leg 12 and the ground. Under the same load, the increased contact area reduces the pressure exerted by the support leg 12 on the ground, effectively preventing the transfer frame from sinking or collapsing on soft surfaces. Simultaneously, the pads 15 act as a transition layer between the support leg 12 and the ground, distributing the concentrated load of the support leg 12 to the ground, reducing the pressure per unit area on the ground, and ensuring the stability of the transfer frame under different ground conditions.

[0080] The transportation process of the ship assembly transfer rack 1000 is as follows: For large assemblies, they can be placed directly on the rack 1 and transferred by AGV2000 or hoisting; for small assemblies, they are first placed in the pallet 2, and then placed on the rack 1 together with the pallet 2, and then transferred by AGV2000 or hoisting.

[0081] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A ship assembly and transfer rack, characterized in that, The ship assembly and transfer frame includes: The frame includes a horizontally extending connecting frame and a plurality of legs connected to the bottom of the connecting frame, the top surface of the connecting frame forming a connecting surface; Multiple trays, each of which has a placement slot for placing small assemblies, wherein the small assemblies are assemblies whose projected size on the horizontal plane is less than or equal to the opening size of the placement slot; The tray is detachably connected to the connecting surface, and when the tray is detached from the connecting surface, the connecting surface forms a supporting plane for placing a large assembly, wherein the large assembly is an assembly whose projected size on the horizontal plane is larger than the size of the opening of the placement slot.

2. The ship assembly and transfer frame as described in claim 1, characterized in that, The tray includes a base plate and two side plates connected to the base plate and spaced apart from each other. The placement groove is formed between the two side plates. Each side plate has a plurality of mounting holes for fasteners to pass through to fix the group in the placement groove.

3. The ship assembly and transfer frame as described in claim 2, characterized in that, A triangular plate is provided between the side plate and the bottom plate, with one side of the triangular plate fixedly connected to the side plate and the other side of the triangular plate fixedly connected to the bottom plate; And / or, the tray further includes a support plate, one end of which is fixedly connected to the bottom surface of the base plate, and the other end of which is connected to the connecting surface.

4. The ship assembly and transfer frame as described in claim 1, characterized in that, The connecting frame includes multiple crossbeams and multiple longitudinal beams. The multiple crossbeams are spaced apart along the width direction of the crossbeams. Multiple longitudinal beams are spaced apart between every two crossbeams along the length direction of the crossbeams. The support legs are connected to the crossbeams and are located on the extension line of the length direction of the longitudinal beams.

5. The ship assembly and transfer frame as described in claim 4, characterized in that, The distance between any two adjacent legs along the length of the crossbeam is greater than a first preset value, and the distance between any two adjacent legs along the width of the crossbeam is greater than a second preset value. The first preset value and the second preset value are configured to allow the AGV to enter under the connecting frame.

6. The ship assembly and transfer frame as described in claim 5, characterized in that, The distance between the longitudinal beam that abuts against the AGV and is located on the outermost side along the length of the crossbeam and the edge of the AGV is not less than 250mm.

7. The ship assembly and transfer frame as described in claim 4, characterized in that, The longitudinal beams are symmetrical on both sides of the transverse beam along its length. And / or, the longitudinal beams are symmetrical on both sides of the transverse beam in the width direction.

8. The ship assembly and transfer frame as described in claim 4, characterized in that, Multiple lifting horses are installed on the two outermost crossbeams along the width direction of the crossbeams, and the lifting horses are located on the extension line of the longitudinal beam.

9. The ship assembly and transfer frame as described in claim 4, characterized in that, The connecting frame also includes multiple reinforcing plates, one side of each reinforcing plate being fixedly connected to the longitudinal beam, and the other side of each reinforcing plate being fixedly connected to the transverse beam.

10. The ship assembly and transfer frame as described in claim 1, characterized in that, The frame also includes multiple pads, each pad corresponding to each leg, and the pads are located at the bottom of the legs and are used to contact the ground.

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