A method for positioning a rear beam assembly to an assembly station
By using land transportation and modular vehicle jacking methods, the problem of poor positioning accuracy of the rear beam components was solved, achieving efficient and accurate component installation and avoiding the impact of surges and tides.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI ZHENHUA HEAVY IND
- Filing Date
- 2024-06-12
- Publication Date
- 2026-07-24
AI Technical Summary
In traditional construction procedures, the placement accuracy of the rear beam components is poor and is severely affected by surges and tides, leading to inaccurate hoisting.
The main beam assembly is supported by a modular vehicle and lifted to a shelf above the final assembly station for placement. The combination of modular vehicle and transfer equipment ensures accurate placement.
This effectively avoids the impact of surges and tides on the positioning accuracy, improves the positioning accuracy and construction efficiency of the rear beam components, and ensures the accurate installation of the components.
Smart Images
Figure CN118848842B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of port crane assembly technology, and more specifically, to a method for positioning a rear beam assembly at the final assembly station. Background Technology
[0002] The rear girder of large port cranes typically takes the form of a double box girder, single box girder, or truss girder, with a length usually of 70-80 meters, a cross-sectional height of 1.8-2.6 meters, a cross-sectional width of 0.8-1.5 meters, and a weight of 150-200 tons. When the rear girder is welded to the sea-side and land-side upper crossbeams to form an assembly, referred to as the "rear girder assembly," its weight is 240-290 tons. Furthermore, when assembled with the trapezoidal frame and its rear tie rod, the weight can even reach 360-410 tons. The overall characteristics of the rear girder assembly are a high slenderness ratio, heavy weight, and relatively weak torsional resistance.
[0003] The traditional construction process involves the rear beam assembly being painted and then transported by land to the floating crane's lifting point, where it is placed on a temporary shelf 1 meter high. The shelf at the final assembly station is typically higher than 3.5 meters. The rear beam assembly is then lifted from the temporary shelf by the floating crane, moved, and lowered onto the final assembly station's shelf. The trapezoidal frame and machine room are then installed onto the rear beam assembly using the same floating crane. During the lifting process, waves and tides directly affect the accurate placement of the beam assembly at the final assembly station after lifting, leading to poor placement precision. Summary of the Invention
[0004] The purpose of this invention is to provide a method for positioning the rear beam assembly at the final assembly station, which can improve the technical problem of poor positioning accuracy in the prior art.
[0005] Embodiments of the present invention can be implemented in the following ways:
[0006] A method for placing a rear beam assembly at the final assembly station, the method comprising:
[0007] Obtain the component parameters of the rear beam assembly;
[0008] The transportation plan for the rear beam assembly is determined based on the component parameters.
[0009] The rear beam assembly is supported by a transfer tooling, and the control module vehicle is used to transport the rear beam assembly to the final assembly station by land using the transportation scheme.
[0010] The rear beam assembly is lifted to a shelf above the final assembly station by the modular vehicle, and then lowered into place on the shelf.
[0011] Optionally, the component parameters include the weight of the rear beam assembly, the center of gravity position of the rear beam assembly, the state of the rear beam assembly, the length of the rear beam assembly, the inner opening width of the rear beam assembly, the width of the rear beam assembly, and the flange height of the rear beam assembly.
[0012] Optionally, the component parameters include the state of the rear beam assembly; the state of the rear beam assembly includes a first state, a second state, and a third state; the rear beam assembly in the first state consists of a rear beam, a marine upper crossbeam, and a landside upper crossbeam; the rear beam assembly in the second state consists of a rear beam, a marine upper crossbeam, a landside upper crossbeam, a trapezoidal frame, a trapezoidal frame rear tie rod, and a trapezoidal frame front tie rod; the rear beam assembly in the third state consists of a rear beam, a marine upper crossbeam, a landside upper crossbeam, a trapezoidal frame, a trapezoidal frame rear tie rod, a trapezoidal frame front tie rod, and a machine room.
[0013] Optionally, the step of determining the transportation scheme for the rear beam assembly based on the component parameters includes:
[0014] The paralleling mode of the modular vehicle is determined based on the state of the rear beam assembly.
[0015] Optionally, the step of determining the paralleling mode of the modular vehicle based on the state of the rear beam assembly includes:
[0016] If the rear beam assembly is in the first state, then two of the modular vehicles are arranged in parallel along the front-rear direction.
[0017] If the rear beam assembly is in the second state, then three of the modular vehicles are arranged in a triangular pattern and driven side by side, with the two modular vehicles parked side by side close to the head of the rear beam assembly and the remaining modular vehicle close to the tail of the rear beam assembly.
[0018] If the rear beam assembly is in the third state, then four of the modular vehicles are arranged in a rectangular array and driven side by side.
[0019] Optionally, the step of lifting the rear beam assembly to a shelf above the final assembly station using the modular vehicle and then lowering the rear beam assembly onto the shelf includes:
[0020] Control the landing of the transfer tooling;
[0021] If, after the transfer fixture is placed on the ground, the flange opening of the rear beam assembly is less than the height of the shelf, then the module vehicle is controlled to lift the transfer fixture so that the flange opening is raised to a height higher than the preset height of the shelf, and then the module vehicle is controlled to lower the rear beam assembly onto the shelf.
[0022] Optionally, if after the transfer tooling is placed on the ground, the flange opening of the rear beam assembly is higher than or equal to the height of the shelf, and the rear beam assembly is in the first state or the second state, then the module vehicle is controlled to be arranged at 90° with the rear beam, and a pad is added to the module vehicle to support the rear beam assembly through the pad.
[0023] The module vehicle is controlled to lift the rear beam assembly until the flange opening is raised above the preset height of the shelf, and the transfer fixture is removed after the rear beam assembly is lifted and detached from the transfer fixture.
[0024] The control module vehicle lowers the rear beam assembly onto the shelf.
[0025] Optionally, if after the transfer fixture is placed on the ground, the flange of the rear beam assembly is higher than or equal to the height of the shelf, and the rear beam assembly is in the third state, then a pad is added to the modular vehicle to support the rear beam assembly.
[0026] The module vehicle is controlled to lift the rear beam assembly until the flange opening is raised above the preset height of the shelf, and the transfer fixture is removed after the rear beam assembly is lifted and detached from the transfer fixture.
[0027] The control module vehicle lowers the rear beam assembly onto the shelf.
[0028] Optionally, the preset height is not less than 200mm.
[0029] The beneficial effects of the method for placing the rear beam assembly at the final assembly station provided by the embodiments of the present invention include:
[0030] An embodiment of the present invention provides a method for positioning a rear beam assembly at the final assembly station. The method includes obtaining the component parameters of the rear beam assembly; determining a transportation plan for the rear beam assembly based on the component parameters; supporting the rear beam assembly using transfer fixtures and controlling a modular vehicle to transport the rear beam assembly by land to the final assembly station; lifting the rear beam assembly to a shelf above the final assembly station using the modular vehicle, and then positioning the rear beam assembly onto the shelf, thereby completing the positioning of the rear beam assembly at the final assembly station. Because this method uses land transportation for transferring and positioning the rear beam assembly at the final assembly station, the impact of waves and tides on positioning accuracy can be avoided, thus helping to improve positioning accuracy. Attached Figure Description
[0031] The above-described features and advantages of the present invention will be better understood after reading the following detailed description of embodiments of the present disclosure in conjunction with the accompanying drawings. In the drawings, components are not necessarily drawn to scale, and components having similar related characteristics or features may have the same or similar reference numerals.
[0032] Figure 1 A step diagram illustrating a method for placing a rear beam assembly into the final assembly station according to one aspect of the present invention is shown.
[0033] Figure 2A A structural schematic diagram of a rear beam assembly in a first state, provided according to an aspect of the present invention, is shown from a first perspective.
[0034] Figure 2B A structural schematic diagram of the rear beam assembly in a first state according to an aspect of the present invention is shown from a second perspective.
[0035] Figure 3A A structural schematic diagram of the rear beam assembly in a second state according to an aspect of the present invention is shown from a first perspective.
[0036] Figure 3B A structural schematic diagram of the rear beam assembly in a second state, provided according to one aspect of the present invention, is shown from a second perspective.
[0037] Figure 4A A structural schematic diagram of the rear beam assembly in a third state according to an aspect of the present invention is shown from a first perspective.
[0038] Figure 4B A structural schematic diagram of the rear beam assembly in a third state according to an aspect of the present invention is shown from a second perspective.
[0039] Figure 5A The diagram illustrates a first-state parallel configuration of the rear beam assembly according to an aspect of the invention;
[0040] Figure 5B The parallel configuration of the rear beam assembly in a second state according to one aspect of the invention is shown;
[0041] Figure 5C The parallel configuration of the rear beam assembly in a third state according to one aspect of the invention is shown;
[0042] Figure 6 A structural schematic diagram of a 10-axle modular vehicle according to one aspect of the present invention is shown;
[0043] Figure 7A A structural schematic diagram of the rear beam assembly in a first state during land transportation is shown according to one aspect of the present invention;
[0044] Figure 7B A structural schematic diagram of the rear beam assembly in the second state during land transportation is shown according to one aspect of the present invention;
[0045] Figure 7C A structural schematic diagram of the rear beam assembly in the third state during land transportation is shown according to one aspect of the present invention;
[0046] Figure 8A A structural schematic diagram of the rear beam assembly being positioned onto the shelf in a first state according to an aspect of the present invention is shown.
[0047] Figure 8B A structural schematic diagram of the rear beam assembly being positioned onto the shelf in a first state according to another aspect of the present invention is shown.
[0048] Figure 8C A structural schematic diagram of the rear beam assembly in a third state, as provided by one aspect of the present invention, is shown when it is positioned onto the shelf.
[0049] Figure 9 A schematic diagram of the structure of a modular vehicle provided according to one aspect of the present invention, wherein the rear beam is arranged at 90°, is shown.
[0050] Figure label:
[0051] 110 - Rear beam assembly; 111 - Rear beam; 112 - Seaside upper crossbeam; 113 - Landside upper crossbeam; 114 - Trapezoidal frame; 115 - Trapezoidal frame rear tie rod; 116 - Trapezoidal frame front tie rod; 117 - Machine room; 118 - Center of gravity; 119 - Flange; 120 - Modular vehicle; 121 - Chassis; 122 - Roller axis; 130 - Transfer fixture; 140 - Pad; 150 - Shelf. Detailed Implementation
[0052] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the aspects described below with reference to the accompanying drawings and specific embodiments are merely exemplary and should not be construed as limiting the scope of protection of the present invention in any way.
[0053] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," "outer," or "vertical" appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed when in use, and does not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.
[0054] At the same time, it should be noted that the terms "first" and "second" are used only for distinguishing descriptions and should not be interpreted as indicating or implying relative importance.
[0055] In the description of this invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components, etc. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0056] Figure 1 This diagram illustrates the steps of the method for placing the rear beam assembly into the final assembly station as provided in this embodiment. Please refer to... Figure 1 This embodiment provides a method for placing the rear beam assembly to the final assembly station. This method utilizes land transportation to achieve the placement of the rear beam assembly 110, effectively avoiding the impact of surges and tides on placement accuracy, thereby contributing to improved placement accuracy. The method for placing the rear beam assembly to the final assembly station includes:
[0057] S01: Obtain the component parameters of the rear beam assembly 110.
[0058] The component parameters of the rear beam assembly 110 include the weight of the rear beam assembly 110, the position of the center of gravity 118 of the rear beam assembly 110, the state of the rear beam assembly 110, the length L of the rear beam assembly 110, the inner opening width B1 of the rear beam assembly 110, the width B2 of the rear beam assembly 110, and the height H1 of the flange opening 119 of the rear beam assembly 110. The weight, length L, inner opening width B1, width B2, and height H1 of the flange opening 119 of the rear beam assembly 110 can be obtained through measurement. The position of the center of gravity 118 of the rear beam assembly 110 can be calculated using the aforementioned component parameters. The detailed calculation process for the position of the center of gravity 118 is not described in detail.
[0059] Figure 2A This diagram shows a structural schematic of the rear beam assembly 110 in its first state, as provided in this embodiment, from a first-view perspective. Figure 2B This diagram shows a structural schematic of the rear beam assembly 110 in the first state provided in this embodiment from a second perspective. Figure 3A This diagram shows a structural schematic of the rear beam assembly 110 in the second state provided in this embodiment from a first perspective. Figure 3B This diagram shows a structural schematic of the rear beam assembly 110 in the second state provided in this embodiment from a second perspective. Figure 4A This diagram shows a structural schematic of the rear beam assembly 110 in the third state provided in this embodiment from a first-view perspective. Figure 4B This diagram illustrates the structure of the rear beam assembly 110 in the third state provided in this embodiment from a second perspective. Please refer to the reference diagram. Figures 2A-4B In this embodiment, the state of the rear beam assembly 110 includes a first state, a second state, and a third state.
[0060] The first-state rear beam assembly 110 consists of a rear beam 111, a sea-side upper crossbeam 112, and a land-side upper crossbeam 113. The second-state rear beam assembly 110 consists of a rear beam 111, a sea-side upper crossbeam 112, a land-side upper crossbeam 113, a trapezoidal frame 114, a trapezoidal frame rear tie rod 115, and a trapezoidal frame front tie rod 116. The third-state rear beam assembly 110 consists of a main beam, a sea-side upper crossbeam 112, a land-side upper crossbeam 113, a trapezoidal frame 114, a trapezoidal frame rear tie rod 115, a trapezoidal frame front tie rod 116, and a machine room 117. In other words, the rear beam assembly 110 in the second state can be regarded as a structure formed by assembling the trapezoidal frame 114, the trapezoidal frame rear tie rod 115 and the trapezoidal frame front tie rod 116 on the rear beam assembly 110 in the first state, and the rear beam assembly 110 in the third state can be regarded as a structure formed by assembling the machine room 117 on the rear beam assembly 110 in the second state.
[0061] S02: Transportation plan for main beam assembly 110 after determining the component parameters.
[0062] The steps for determining the transportation plan of the rear beam assembly 110 based on the component parameters include: determining the paralleling mode of the modular vehicles 120 based on the status of the rear beam assembly 110.
[0063] Specifically, such as Figure 5A As shown, if the rear beam assembly 110 is in the first state, two modular vehicles 120 are arranged in a front-to-back direction and driven side-by-side. The length of the modular vehicle 120 extends along the length of the rear beam assembly 110, and the two modular vehicles 120 are arranged in a straight line.
[0064] like Figure 5B As shown, if the rear beam assembly 110 is in the second state, three modular vehicles 120 are arranged in a triangular pattern, with two modular vehicles 120 arranged side by side along the width direction and the third modular vehicle 120 arranged on one side along the length direction. The two side-by-side modular vehicles 120 are positioned close to the head of the rear beam assembly 110, that is, close to the trapezoidal frame 114 of the rear beam assembly 110, and the remaining modular vehicle 120 is positioned at the rear of the rear beam assembly 110.
[0065] like Figure 5CAs shown, if the rear beam assembly 110 is in the third state, then four modular vehicles 120 are arranged in a rectangular array and driven side by side.
[0066] In the above-mentioned parallel vehicle configuration, the specific position of the modular vehicle 120 is determined based on the length of the rear beam assembly 110 and the position of the center of gravity 118, so as to achieve stable transportation of the rear beam assembly 110 through the modular vehicle 120.
[0067] To ensure that the modular vehicle 120 can drive the rear beam assembly 110 for transfer under the above-mentioned parallel driving mode, the step of determining the transportation plan of the rear beam assembly 110 based on the component parameters also includes the step of selecting a suitable modular vehicle 120 based on the component parameters of the rear beam assembly 110.
[0068] Figure 6 A structural schematic diagram of the 10-axle modular vehicle 120 provided in this embodiment is shown. Please refer to... Figure 6 In this embodiment, the modular vehicle 120 includes a frame 121 and a roller axle 122 mounted under the frame 121. The frame 121 is moved by the rolling motion of the roller axle 122, thereby transferring the rear beam assembly 110. A hydraulic structure (not shown) is also provided between the frame 121 and the roller axle 122, which lifts the frame 121 to raise the rear beam assembly 110. The modular vehicle 120 has an overall width of 3m, a fully loaded center height of 1.3m, and a fully loaded gradeability of 5%.
[0069] In selecting a suitable modular vehicle 120 based on the component parameters of the rear beam assembly 110, it is necessary to determine the number of axles of the modular vehicle 120 according to the weight of the rear beam assembly 110. Specifically, the rated load capacity of the 10-axle modular vehicle 120 provided in this embodiment is 348 tons, and in actual use, the single axle load capacity of the modular vehicle 120 is required to be less than or equal to 30 tons. On the other hand, it is also necessary to determine the lifting height of the modular vehicle 120 according to the height H1 of the flange opening 119 of the rear beam assembly 110, so as to meet the requirement that the flange opening 119 of the rear beam assembly 110 can be lifted above the final assembly station by the modular vehicle 120.
[0070] Furthermore, since the method for placing the rear beam assembly to the final assembly station provided in this embodiment uses land transportation to transfer the rear beam assembly 110, when determining the transportation plan, the route from the starting point of the rear beam assembly 110 to the final assembly station can be planned according to the site resources, and the relevant road surface can be smoothed and hardened, so that the modular vehicle 120 can smoothly transport the rear beam assembly 110 to the final assembly station during the transportation process.
[0071] S03: The rear beam assembly 110 is supported by the transfer tool 130, and the module vehicle 120 is controlled to transport the rear beam assembly 110 to the final assembly station by land using the transportation scheme.
[0072] The rear beam assembly 110 is placed on the transfer fixture 130, which supports the rear beam assembly 110. Specifically, the transfer fixture 130 can adopt a tooling structure in the prior art, such as the structure provided in the invention patent with application number: 202210870743.9.
[0073] Multiple modular vehicles 120 are controlled to merge according to the merging method determined in step S03, and the rear beam assembly 110 is transported by land. The structure of the multiple modular vehicles 120 transporting the rear beam assembly 110 by land is as follows: Figures 7A to 7C As shown.
[0074] S04: The rear beam assembly 110 is lifted to the shelf 150 above the final assembly station by the modular vehicle 120, and then the rear beam assembly 110 is placed on the shelf 150.
[0075] The steps of lifting the rear beam assembly 110 to a shelf 150 above the final assembly station using a modular vehicle 120 and then lowering the rear beam assembly 110 into the shelf 150 include:
[0076] Control the transfer fixture 130 to land. Control the module vehicle 120 to descend until the transfer fixture 130 lands.
[0077] If, after the transfer fixture 130 is placed on the ground, the flange opening 119 of the rear beam assembly 110 is less than the height of the shelf 150, then the control module vehicle 120 lifts the transfer fixture 130 so that the flange opening 119 is raised to a height higher than the preset height of the shelf 150, and then the control module vehicle 120 lowers the rear beam assembly 110 onto the shelf 150.
[0078] Figure 8A This diagram shows the structure of the rear beam assembly 110 in its first state, positioned on the shelf 150. Please refer to... Figure 8AThe flange opening 119 has a ground clearance of h1, and the shelf 150 has a height of h2. If h1 is less than h2 when the transfer fixture 130 lands, it means that after the module vehicle 120 lifts the rear beam assembly 110, the rear beam assembly 110 can be smoothly placed on the shelf 150. At this time, the module vehicle 120 can be directly controlled to lift the transfer fixture 130, thereby raising the rear beam assembly 110. Once the flange opening 119 has risen above the preset height of the shelf 150, the module vehicle 120 is controlled to transport the rear beam assembly 110 to a position where the flange opening 119 is directly above the shelf 150. Then, the module vehicle 120 descends to allow the rear beam assembly 110 to fall onto the shelf 150, completing the operation of placing the rear beam assembly 110 at the final assembly station. After the rear beam assembly 110 is positioned at the final assembly station, the module vehicle 120 and the transfer tooling 130 complete their work. At this point, the module vehicle 120 and the transfer tooling 130 can be removed from under the rear beam assembly 110.
[0079] It should be noted that after the transfer fixture 130 is placed on the ground, if the flange opening 119 of the rear beam assembly 110 is less than the height of the shelf 150, the placement process of the rear beam assembly 110 in the first, second, and third states is the same. Therefore, the above only illustrates the placement process using the placement structure of the rear beam assembly 110 in the first state. The placement structure and process of the rear beam assembly 110 in the second and third states will not be described here.
[0080] If, after the transfer fixture 130 is placed on the ground, the flange opening 119 of the rear beam assembly 110 is at a height higher than or equal to the height of the shelf 150 (i.e., h1 ≥ h2), then it means that the rear beam assembly 110 cannot be directly placed onto the shelf 150. In this case, a specific placement plan needs to be determined based on the condition of the rear beam assembly 110.
[0081] After the transfer fixture 130 is placed on the ground, if the flange 119 of the rear beam assembly 110 is at a height higher than or equal to the height of the shelf 150, and if the rear beam assembly 110 is in either the first or second state, then the control module vehicle 120 is arranged at a 90° angle to the rear beam 111 (e.g., Figure 9 (As shown), a pad 140 is added to the module 120 to support the rear beam assembly 110. The module 120 is controlled to lift the rear beam assembly 110 until the flange opening 119 is above the preset height of the shelf 150. After the rear beam assembly 110 is lifted off the ground, the transfer fixture 130 is removed. Finally, the module 120 is controlled to lower the rear beam assembly 110 into place on the shelf 150.
[0082] Figure 8B This diagram shows the structure of the rear beam assembly 110 in its first state, positioned on the shelf 150. Please refer to... Figure 8B Specifically, after the modular vehicle 120 controls the transfer fixture 130 to descend and land, if the flange opening 119 of the rear beam assembly 110 is higher than or equal to the height of the shelf 150, the modular vehicle 120 is controlled to drive out from under the transfer fixture 130. Then, a pad 140 of appropriate height is placed on the frame 121 of the modular vehicle 120, and the modular vehicle 120 is driven under the rear beam assembly 110, with the modular vehicle 120 turned 90° compared to its transport position, so that the modular vehicle 120 and the rear beam 111 are arranged at a 90° angle. Then, the modular vehicle 120 is controlled to lift the rear beam assembly 110 until the flange opening 119 is raised to a preset height higher than the shelf 150. During the lifting of the rear beam assembly 110 by the modular vehicle 120, as the height of the rear beam assembly 110 increases, it detaches from the transfer fixture 130. After detachment, the transfer fixture 130 can be removed, ensuring that it does not affect the height of the rear beam assembly 110 during subsequent placement. Finally, the modular vehicle 120 transports the rear beam assembly 110 to a position where the flange opening 119 is directly above the shelf 150. Then, the modular vehicle 120 lowers to place the rear beam assembly 110 onto the shelf 150, completing the placement of the rear beam assembly 110 to the final assembly station. The modular vehicle 120 can then be removed. It should be noted that the height of the pad 140 must be sufficient to meet the placement requirements.
[0083] It should also be noted that after the transfer fixture 130 is placed on the ground, if the flange opening 119 of the rear beam assembly 110 is higher than or equal to the height of the shelf 150, the placement process of the rear beam assembly 110 in the first and second states is the same. Therefore, the above description only describes the placement structure and process of the rear beam assembly 110 in the first state, and the placement structure and process of the rear beam assembly 110 in the second state will not be repeated.
[0084] After the transfer fixture 130 is placed on the ground, if the flange opening 119 of the rear beam assembly 110 is at a height higher than or equal to the height of the shelf 150, and if the rear beam assembly 110 is in the third state, then a pad 140 is added to the module vehicle 120 to support the rear beam assembly 110. Then, the module vehicle 120 is controlled to lift the rear beam assembly 110 until the flange opening 119 is at a height higher than the preset height of the shelf 150, and the transfer fixture 130 is removed after the rear beam assembly 110 is lifted off the ground. The module vehicle 120 is then controlled to lower the rear beam assembly 110 onto the shelf 150.
[0085] Specifically, Figure 8C This diagram shows the structure of the rear beam assembly 110 in its third state, positioned on the shelf 150. Please refer to... Figure 8CSpecifically, after the modular vehicle 120 controls the transfer fixture 130 to descend and land, if the flange opening 119 of the rear beam assembly 110 is higher than or equal to the height of the shelf 150, the modular vehicle 120 is controlled to drive out from under the transfer fixture 130. Then, a pad 140 of appropriate height is placed on the frame 121 of the modular vehicle 120, and the modular vehicle 120 is driven under the rear beam assembly 110. Then, the modular vehicle 120 is controlled to lift the rear beam assembly 110 until the flange opening 119 is raised to a preset height higher than the shelf 150. During the lifting of the rear beam assembly 110 by the modular vehicle 120, as the height of the rear beam assembly 110 increases, it detaches from the transfer fixture 130. After detachment, the transfer fixture 130 can be removed, ensuring that it does not affect the height of the rear beam assembly 110 during subsequent placement. Finally, the modular vehicle 120 transports the rear beam assembly 110 to a position where the flange opening 119 is directly above the shelf 150. The modular vehicle 120 then lowers to place the rear beam assembly 110 onto the shelf 150, completing the placement of the rear beam assembly 110 to the final assembly station. The modular vehicle 120 can then be removed.
[0086] Optionally, the preset height is not less than 200mm.
[0087] The method for placing the rear beam assembly 110 to the final assembly station provided in the embodiments of the present invention utilizes land transportation to effectively avoid the impact of surges and tides on the placement accuracy of the rear beam assembly 110. This helps ensure the accurate placement of the rear beam assembly 110 to the final assembly station, ensuring a smooth and efficient process. It effectively replaces the existing technology of using a floating crane to lift the rear beam assembly 110 to the final assembly station. Furthermore, the hoisting work of the trapezoidal frame 114, machine room 117, etc., can be pre-positioned and assembled onto the rear beam assembly 110 before placement, and then the beam assembly 110 is simultaneously placed and installed at the final assembly station, which helps improve construction efficiency and ensure construction safety.
[0088] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.
Claims
1. A method for placing a rear beam assembly at the final assembly station, characterized in that, The method for placing the rear beam assembly at the final assembly station includes: Obtain the component parameters of the rear beam assembly; The transportation plan for the rear beam assembly is determined based on the component parameters. The rear beam assembly is supported by a transfer tooling, and the control module vehicle is used to transport the rear beam assembly to the final assembly station by land using the transportation scheme. The rear beam assembly is lifted to a shelf above the final assembly station by the modular vehicle, and then the rear beam assembly is placed into the shelf. The component parameters include the state of the rear beam assembly; the state of the rear beam assembly includes a first state, a second state, and a third state; the rear beam assembly in the first state consists of a rear beam, a marine upper crossbeam, and a landside upper crossbeam, and the rear beam assembly in the second state consists of a rear beam, a marine upper crossbeam, a landside upper crossbeam, a trapezoidal frame, a trapezoidal frame rear tie rod, and a trapezoidal frame front tie rod; The steps of lifting the rear beam assembly to a shelf above the final assembly station using the modular vehicle and lowering the rear beam assembly onto the shelf include: Control the landing of the transfer tooling; If, after the transfer fixture is placed on the ground, the flange opening of the rear beam assembly is less than the height of the shelf, then the module vehicle is controlled to lift the transfer fixture so that the flange opening is raised to a height higher than the preset height of the shelf, and then the module vehicle is controlled to place the rear beam assembly onto the shelf. If, after the transfer fixture is placed on the ground, the flange of the rear beam assembly is higher than or equal to the height of the shelf, and the rear beam assembly is in the first state or the second state, then the module vehicle is controlled to be arranged at 90° with the rear beam, and a pad is added to the module vehicle to support the rear beam assembly. The module vehicle is controlled to lift the rear beam assembly until the flange opening is raised above the preset height of the shelf, and the transfer fixture is removed after the rear beam assembly is lifted and detached from the transfer fixture. The control module vehicle lowers the rear beam assembly onto the shelf.
2. The method for placing the rear beam assembly to the final assembly station according to claim 1, characterized in that, The component parameters include the weight of the rear beam assembly, the center of gravity position of the rear beam assembly, the state of the rear beam assembly, the length of the rear beam assembly, the inner opening width of the rear beam assembly, the width of the rear beam assembly, and the flange height of the rear beam assembly.
3. The method for placing the rear beam assembly to the final assembly station according to claim 1, characterized in that, The steps for determining the transportation plan for the rear beam assembly based on the component parameters include: The paralleling mode of the modular vehicle is determined based on the state of the rear beam assembly.
4. The method for placing the rear beam assembly to the final assembly station according to claim 3, characterized in that, The steps for determining the paralleling mode of the modular vehicle based on the state of the rear beam assembly include: If the rear beam assembly is in the first state, then two of the modular vehicles are arranged in parallel along the front-rear direction. If the rear beam assembly is in the second state, then three of the modular vehicles are arranged in a triangular pattern and driven side by side, with the two modular vehicles parked side by side close to the head of the rear beam assembly and the remaining modular vehicle close to the tail of the rear beam assembly. If the rear beam assembly is in the third state, then four of the modular vehicles are arranged in a rectangular array and driven side by side.
5. The method for placing the rear beam assembly to the final assembly station according to claim 1, characterized in that, The rear beam assembly in the third state consists of a rear beam, a marine upper crossbeam, a landside upper crossbeam, a trapezoidal frame, a trapezoidal frame rear tie rod, a trapezoidal frame front tie rod, and a machine room. If, after the transfer fixture is placed on the ground, the flange of the rear beam assembly is higher than or equal to the height of the shelf, and the rear beam assembly is in the third state, then a pad is added to the modular vehicle to support the rear beam assembly. The module vehicle is controlled to lift the rear beam assembly until the flange opening is raised above the preset height of the shelf, and the transfer fixture is removed after the rear beam assembly is lifted and detached from the transfer fixture. The control module vehicle lowers the rear beam assembly onto the shelf.
6. The method for placing the rear beam assembly to the final assembly station according to claim 1, characterized in that, The preset height is not less than 200mm.