Tooling system and assembly method for assembling large cylindrical structural members with built-in equipment

Abstract

The present application relates to a tooling system for assembling large cylindrical structural members with built-in equipment, comprising a work platform provided with a plurality of evenly distributed ring positioning slots for quickly positioning the cylindrical structural member, allowing the cylindrical structural member to be placed in a lying position, thereby maintaining a stable posture during the assembly period. A mobile posture adjustment mechanism and a limiting centering device are provided below the work platform. The mobile posture adjustment mechanism comprises a ground rail and a steel wheel driver cooperating therewith, and the steel wheel driver is provided with a fine adjustment platform and a pushing device cooperating with the fine adjustment platform. The limiting centering device is used to position the fine adjustment platform to a preset centering position below the axis of the cylindrical structural member. The pushing device is used to send the to-be-connected component into the cylindrical structural member along the axial direction and realize slow assembly, and when approaching the assembly position, the pushing device realizes slow assembly at low speed, thereby reducing the risk of collision and jamming. The present application ensures the consistency of key positioning accuracy and assembly quality, reduces the dependence on human experience, and effectively reduces the operation risk.

Description

Technical Field

[0001] This invention relates to the technical field of assembling large cylindrical structures in shipbuilding, specifically to tooling systems and assembly methods for assembling large cylindrical structural components and internal equipment, and particularly to an integrated tooling system and assembly method for assembling large cylindrical structural components and internal equipment. Background Technology

[0002] In existing technology, large cylindrical structural components are a special type of ship hull structure, typically with a diameter of 4-5 meters and a height of 3-4 meters. During assembly, power equipment needs to be installed inside these large cylindrical structural components. The traditional installation method involves first hoisting or pushing the cylindrical structural component into the assembly area, then using adjustable brackets or other temporary supports to fix the component to its shape. Subsequently, operators use measuring instruments to repeatedly align the cylindrical structural component with the internal equipment to complete the assembly. This method has significant shortcomings and the following problems: 1. Cylindrical structural components are prone to displacement and are difficult to maintain stability for a long time.

[0003] 2. The assembly datum relies heavily on temporary markings or support points on site, lacking a unified datum. This makes it difficult to achieve unified control and closed-loop operation, requiring repeated adjustments during the alignment process and reducing assembly efficiency.

[0004] 3. Hoisting involves close-range manual operation, which poses high safety risks, high labor intensity, long assembly cycle, and the consistency of quality is significantly affected by the experience of the personnel. Summary of the Invention

[0005] The purpose of this invention is to provide an improved tooling system and assembly method for the assembly of large cylindrical structural components and built-in equipment. Through improvements in structure and assembly method, this invention solves the problems of easy displacement of posture and difficulty in maintaining stability for a long time during existing assembly processes, inconsistent assembly benchmarks, high labor intensity, long time consumption of repeated measurement and alignment, and poor consistency of assembly quality.

[0006] To achieve the above objectives, the technical solution of the present invention is: a tooling system for assembling large cylindrical structural components and built-in equipment, characterized in that: the tooling system includes a working platform, on which several evenly distributed circumferential positioning slots are provided for quickly positioning the cylindrical structural components; a moving adjustment mechanism and a limiting alignment device are provided below the working platform; the moving adjustment mechanism includes a ground rail and a steel wheel carriage that cooperates with it; the steel wheel carriage is provided with a fine-tuning platform and a pushing device that cooperates with the fine-tuning platform; the limiting alignment device is used to position the fine-tuning platform to a preset alignment position below the axis of the cylindrical structural component; the pushing device is used to feed the component to be docked into the cylindrical structural component along the axial direction and realize slow-progress assembly.

[0007] Preferably, the work platform has a circular cylindrical structural component placement area, with 5-11 circumferential positioning slots evenly distributed along the circumference of the placement area, with an angle deviation of <0.1°. The circumferential positioning slots adopt an arc-shaped conformal limiting structure, with their inner contact surface matching the outer wall of the cylindrical structural component. A wear-resistant buffer pad is provided inside the slot to enable the cylindrical structural component to be placed horizontally and to perform circumferential limiting and initial positioning of the cylindrical structural component.

[0008] Furthermore, the fine-tuning platform has radial fine-tuning capability with a fine-tuning accuracy of ±0.1mm and a fine-tuning stroke of ±50mm. The platform is used to align the part to be docked with the cylindrical structure before insertion and assembly, and to make minor compensation adjustments during the slow insertion of the part to be docked into the cylindrical structure.

[0009] Furthermore, the limiting and centering device includes a set of mechanical limiting blocks symmetrically arranged on the ground rail, which enables the steel wheel frame car to be positioned at the centering position directly below the cylindrical structure.

[0010] Furthermore, the pushing device adopts a hydraulic lifting structure, with a vertical accuracy of ≤0.2° and a vertical stroke distance of 0-1000mm.

[0011] Furthermore, the work platform is made of steel, with dimensions of 15m×15m×15mm and a flatness of ≤0.5mm.

[0012] An assembly method for a tooling system used for the assembly of large cylindrical structural components and built-in equipment, characterized by the following steps: a) Pre-positioning inspection: Before positioning the cylindrical structural component, an inspection is conducted to determine its state; b) Lifting: The cylindrical structural component is lifted into the placement area formed by several circumferential positioning slots; c) Completion of positioning: The circumferential positioning slots are tightly fitted and positioned to the perimeter of the cylindrical structural component, and the posture of the cylindrical structural component is checked using a level, laser measuring instrument, or total station, wherein: the horizontal position deviation is ≤1mm; the vertical axis inclination is ≤0.2°; the coaxiality between the central axis of the cylindrical structural component and the platform baseline is ≤0.5mm; ensuring that the cylindrical structural component achieves a horizontal position. Stable placement ensures the cylindrical structural component is placed horizontally, guaranteeing uniform stress across its entire length and maintaining a stable posture throughout the assembly cycle; d. Internal equipment installation: Place the component to be docked onto the fine-tuning platform, and move the steel wheel trolley to position it directly beneath the cylindrical structural component, achieving initial axial alignment between the component and the cylindrical structural component; slowly insert the component into the cylindrical structural component using a pushing device, and fine-tune its position using the fine-tuning platform to precisely align its center with the vertical direction of the cylindrical structural component, securing the component; e. Installation completion: Confirm that the connection between the component and the cylindrical structural component is secure, without tilting or loosening, and move the steel wheel trolley to its initial position.

[0013] Preferably, in step a, before positioning the cylindrical structural component, check whether there are foreign objects in the positioning slot to avoid the impact of debris on the installation accuracy, and check whether the mating surface of the cylindrical structural component is flat and smooth, and whether the mating surface is free of scratches or deformation.

[0014] Furthermore, in step b, there are a total of 7 positioning slots, which are used to circumferentially limit the cylindrical structural components and achieve rapid initial positioning. At the same time, reference marks are set for attitude verification and measurement reference establishment.

[0015] Furthermore, in step d, before docking, first confirm that the steel wheel frame vehicle has returned to its original position and moved away from the work platform. Lower the pushing device to its lowest point, check that the pushing device moves smoothly up and down without jamming, check that there are no debris on the ground rail, and that the steel wheel frame vehicle does not shake significantly. The pushing device slowly sends the part to be docked into the cylindrical structure. When approaching the assembly position, it moves slowly at a low speed to reduce the risk of collision and jamming.

[0016] Compared with the prior art, the technical solution of the present invention not only improves the overall technical solution, but also includes many improvements in details. Specifically, it has the following beneficial effects: 1. The improved solution of the present invention includes a working platform, on which a number of evenly distributed circumferential positioning slots are provided for quickly positioning the cylindrical structural component, so that the cylindrical structural component can be placed in a horizontal position, ensuring that the entire section of the cylindrical structural component is evenly stressed, thereby maintaining a stable posture during the assembly cycle. 2. In the technical solution of the present invention, a moving posture adjustment mechanism and a limiting centering device are provided below the working platform. The moving posture adjustment mechanism includes a ground rail and a steel wheel carriage that cooperates with it. The steel wheel carriage is provided with a fine-tuning platform and a pushing device that cooperates with the fine-tuning platform. The limiting centering device is used to position the fine-tuning platform to a preset centering position below the axis of the cylindrical structure. The pushing device is used to send the part to be docked into the cylindrical structure along the axial direction and realize the slow-progress assembly, which significantly shortens the assembly cycle, improves the assembly efficiency, ensures the consistency of key positioning accuracy and assembly quality, reduces the dependence on manual experience, and effectively reduces the operational risk. 3. In the structure of the present invention, a circumferential limiting support structure is formed by the circumferential positioning groove and the cylindrical structural component, so that the key indicators are kept stable within a controllable range; 4. The assembly steps of this invention are simple, easy to use, improve efficiency, reduce errors, lower costs, and facilitate promotion and utilization. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the working platform and the circumferential positioning slot of the present invention.

[0019] Figure 3 This is a schematic diagram of the moving posture adjustment mechanism and the limiting centering device of the present invention.

[0020] Figure 4 This is a schematic diagram of the assembly state of the present invention.

[0021] Figure label: 1. Cylindrical structural component, 2. Moving and adjusting mechanism, 3. Working platform, 4. Circumferential positioning slot, 5. Ground rail, 6. Steel wheel driving vehicle, 7. Pushing device, 8. Fine-tuning platform, 9. Limiting and centering device, 10. Components to be docked. Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] This invention provides a tooling system for assembling large cylindrical structural components and built-in equipment, see details below. Figure 1 The difference between this and existing technologies lies in the following: the tooling system includes a working platform 3, on which several evenly distributed circumferential positioning slots 4 are provided for rapid positioning of cylindrical structural components. Below the working platform are a moving adjustment mechanism 2 and a limiting alignment device 9. The moving adjustment mechanism includes a ground rail 5 and a cooperating steel wheel carriage 6. The steel wheel carriage is equipped with a fine-tuning platform 8 and a pushing device 7 that cooperates with the fine-tuning platform. The limiting alignment device is used to position the fine-tuning platform to a preset alignment position below the axis of the cylindrical structural component. The pushing device is used to axially feed the component to be docked into the cylindrical structural component and achieve slow-progress assembly. The built-in equipment mentioned here refers to the component to be docked.

[0024] During implementation, several circumferentially arranged circumferential positioning slots are used for rapid positioning of the cylindrical structural components, enabling them to be placed horizontally and ensuring uniform stress throughout their entire length, thus maintaining a stable posture throughout the assembly cycle. A limiting and centering device is used to precisely position the steel wheel frame vehicle to the centering position below the axis of the cylindrical structural component. A pushing device is used to axially feed the components to be joined into the inner cylinder of the cylindrical structural component, advancing slowly at low speed as it approaches the assembly position to reduce the risk of collisions and jamming. This ensures consistency in key positioning accuracy and assembly quality, reduces reliance on manual experience, and effectively reduces operational risks.

[0025] Example 1 This embodiment describes a tooling system for assembling large cylindrical structural components and built-in equipment; see details below. Figure 1The tooling system includes a work platform 3, which has several evenly distributed circumferential positioning slots 4 for quickly positioning the cylindrical structural component 1. Below the work platform are a moving and adjusting mechanism 2 and a limiting and centering device 9. The moving and adjusting mechanism includes a ground rail 5 and a steel wheel carriage 6 that works with it. The steel wheel carriage has a fine-tuning platform 8 and a pushing device 7 that works with the fine-tuning platform. The limiting and centering device is used to position the fine-tuning platform to a preset centering position below the axis of the cylindrical structural component. The pushing device is used to feed the component to be docked into the cylindrical structural component along the axis and achieve slow-progress assembly.

[0026] Specifically, the work platform has a circular area for placing cylindrical structural components. Five to eleven circumferential positioning slots are evenly distributed along the circumference of the area. In this embodiment, seven slots are preferred, with an angular deviation of <0.1°. The circumferential positioning slots adopt an arc-shaped conformal limiting structure, with their inner contact surface matching the outer wall of the cylindrical structural component. A wear-resistant buffer layer is provided inside the slots to reduce localized stress concentration and the risk of damage to the outer surface of the cylindrical structural component during hoisting and positioning. Multiple evenly distributed supports are formed between the circumferential positioning slots to achieve horizontal placement of the cylindrical structural component (e.g., ...). Figure 1 , Figure 2 As shown in the diagram, the cylindrical structural component is circumferentially limited and initially positioned. The working platform is a steel platform with dimensions of 15m×15m×15mm, and a flatness of ≤0.5mm. The platform flatness is no greater than 0.5mm to ensure the stability of the initial positioning of the structural component. The steel wheel frame vehicle uses steel wheels and ground rails with a travel speed of 0-5m / min. The straightness of the ground rails is 0.5mm / 10m. It is used to smoothly move the built-in equipment to the bottom of the cylindrical structural component for installation.

[0027] Furthermore, the fine-tuning platform has radial fine-tuning capabilities with an accuracy of ±0.1mm and a stroke of ±50mm. The platform is used to coaxially align the component to be docked with the cylindrical structural member before insertion and assembly, and to perform minor compensation adjustments during the slow insertion of the component into the cylindrical structural member. Specifically, the axial deviation between the cylindrical structural members is measured using a plumb line and a steel ruler, and then manually corrected using the fine-tuning platform based on the measurement data until the axial deviation is controlled within the allowable range.

[0028] Furthermore, the limiting and centering device includes a set of mechanical limiting blocks symmetrically arranged on the ground rail, which enables the steel wheel frame car to be positioned at the centering position directly below the cylindrical structure.

[0029] Furthermore, the pushing device adopts a hydraulic lifting structure, with a vertical accuracy of ≤0.2° and a vertical stroke distance of 0-1000mm. It is used for the installation and docking of cylindrical structural components with internal equipment to ensure installation accuracy.

[0030] Example 2 This embodiment describes a tooling system for assembling large cylindrical structural components and built-in equipment. The tooling system includes a work platform with several evenly distributed circumferential positioning slots for quickly positioning the cylindrical structural components. Below the work platform are a moving and adjusting mechanism and a limiting and centering device. The moving and adjusting mechanism includes a ground rail and a steel wheel carriage that works with it. The steel wheel carriage has a fine-tuning platform and a pushing device that works with the fine-tuning platform. The limiting and centering device is used to position the fine-tuning platform to a preset centering position below the axis of the cylindrical structural component. The pushing device is used to feed the component to be docked into the cylindrical structural component axially and achieve slow-progress assembly.

[0031] The work platform, designed to support large cylindrical structural components and provide operational space for assembly, adjustment, and docking, is constructed of steel and measures 15m × 15m × 15mm. The platform's flatness is no greater than 0.5mm to ensure the stability of the initial positioning of the structural components. Seven positioning slots are evenly distributed circumferentially on the work platform for circumferential limiting of the cylindrical structural components and for rapid initial positioning. Reference markers are also provided for attitude verification and the establishment of measurement benchmarks. This provides a unified, stable, and repeatable benchmark for the assembly, adjustment, docking, and final assembly positioning of the cylindrical structural components.

[0032] In the mobile adjustment mechanism, the ground rail guides the steel wheel trolley's direction of travel. The trolley moves smoothly along the ground rail via its steel wheels, and the drive transmission assembly, consisting of a motor and gear transmission mechanism, enables the trolley's linear reciprocating movement. The fine-tuning platform carries the built-in equipment and performs centering adjustments with a stroke of ±50mm. The limiting centering device precisely positions the steel wheel trolley to the centering position below the axis of the cylindrical structure, using mechanical limit blocks to ensure repeatability. The pushing device axially feeds the component to be docked into the inner cylinder of the cylindrical structure, advancing slowly at low speed as it approaches the assembly position to reduce the risk of collision and jamming.

[0033] Example 3 This embodiment describes an assembly method for a tooling system used for assembling large cylindrical structural components and built-in equipment. The assembly method comprises the following steps: a) Pre-positioning inspection: Before positioning the cylindrical structural component, an inspection is conducted to determine its state; b) Lifting: The cylindrical structural component is lifted into the placement area formed by several circumferential positioning slots; c) Completion of positioning: The circumferential positioning slots are tightly fitted and positioned to the perimeter of the cylindrical structural component, and the posture of the cylindrical structural component is checked using a level, laser measuring instrument, or total station, wherein: horizontal position deviation ≤ 1mm; vertical axis inclination ≤ 0.2°; coaxiality between the central axis of the cylindrical structural component and the platform baseline ≤ 0.5mm; ensuring the cylindrical structure... The assembly process involves several steps: 1. **Horizontal Stability:** The cylindrical component is placed horizontally to ensure uniform stress distribution throughout its length, maintaining a stable posture throughout the assembly cycle. 2. **Internal Equipment Installation:** The component to be docked is placed on the fine-tuning platform. The steel wheel trolley is moved to position the component directly beneath the cylindrical component, achieving initial axial alignment. The component is then slowly inserted into the cylindrical component using a pushing device. The position of the component is fine-tuned using the fine-tuning platform to ensure its center precisely aligns with the vertical direction of the cylindrical component, thus securing the component. 3. **Installation Completion:** The connection between the component and the cylindrical component is confirmed to be secure, without tilting or loosening. The steel wheel trolley is then moved to its initial position.

[0034] Preferably, in step a, before positioning the cylindrical structural component, check whether there are foreign objects in the positioning slot to avoid the impact of debris on the installation accuracy, and check whether the mating surface of the cylindrical structural component is flat and smooth, and whether the mating surface is free of scratches or deformation.

[0035] Furthermore, in step b, there are seven circumferential positioning slots used for circumferential limiting of the cylindrical structural component and for rapid initial positioning. Simultaneously, reference markers are set for attitude verification and measurement benchmark establishment. These reference markers include a centerline marker, an axial reference line marker, a horizontal reference point, and a laser measurement alignment mark, used to establish a unified measurement benchmark during the installation process of the cylindrical structural component, enabling attitude verification, axis alignment, and repeatable positioning.

[0036] In step c, the cylindrical structural component is completely placed within several circumferential positioning slots. It is checked that the cylindrical structural component fits tightly with the circumferential positioning slots without any shaking. A slight shaking test is performed on the cylindrical structural component to confirm stable installation. The installation position is visually inspected and necessary measurements are taken to ensure that the horizontal and vertical directions of the cylindrical structural component meet the design requirements.

[0037] Furthermore, in step d, before docking, first confirm that the steel wheel frame trolley has returned to its original position and moved away from the work platform. Lower the pushing device to its lowest point, check that the pushing device moves smoothly up and down without jamming, check that the ground rail is free of debris, and that the steel wheel frame trolley does not shake significantly. The pushing device slowly sends the part to be docked into the cylindrical structure. When approaching the assembly position, proceed slowly at a low speed to reduce the risk of collision and jamming. After the pushing device delivers the part to be docked to the designated position, fix the part to be docked, and check that all fasteners are complete and that the tightening torque meets the requirements. Perform a light shake check on the installed part to be docked to confirm that the connection is secure and there is no loosening or tilting. Then, ensure that all fasteners are complete and tightened to the specified torque.

[0038] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A tooling system for assembling large cylindrical structural components and built-in equipment, characterized in that: The tooling system includes a work platform with several evenly distributed circumferential positioning slots for quickly positioning cylindrical structural components. Below the work platform are a moving and adjusting mechanism and a limiting and centering device. The moving and adjusting mechanism includes a ground rail and a steel wheel carriage that works with it. The steel wheel carriage has a fine-tuning platform and a pushing device that works with the fine-tuning platform. The limiting and centering device is used to position the fine-tuning platform to a preset centering position below the axis of the cylindrical structural component. The pushing device is used to feed the parts to be docked into the cylindrical structural component axially and achieve slow-progress assembly.

2. The tooling system for assembling large cylindrical structural components and built-in equipment according to claim 1, characterized in that: The work platform has a circular cylindrical structural component placement area. 5-11 circumferential positioning slots are evenly distributed along the circumference of the placement area with an angle deviation of <0.1°. The circumferential positioning slots adopt an arc-shaped conformal limiting structure, and their inner contact surface matches the outer wall of the cylindrical structural component. A wear-resistant buffer pad is set inside the slot to realize the horizontal placement of the cylindrical structural component and to perform circumferential limiting and initial positioning of the cylindrical structural component.

3. The tooling system for assembling large cylindrical structural components and built-in equipment according to claim 1, characterized in that: The fine-tuning platform has radial fine-tuning capability with a fine-tuning accuracy of ±0.1mm and a fine-tuning stroke of ±50mm. The platform is used to align the parts to be docked with the cylindrical structural parts coaxially before insertion and assembly, and to make minor compensation adjustments during the slow insertion of the parts to be docked into the cylindrical structural parts.

4. The tooling system for assembling large cylindrical structural components and built-in equipment according to claim 1, characterized in that: The limiting and centering device includes a set of mechanical limiting blocks symmetrically arranged on the ground rail. The limiting and centering device positions the steel wheel frame car to the centering position directly below the cylindrical structure.

5. The tooling system for assembling large cylindrical structural components and built-in equipment according to claim 1, characterized in that: The pushing device adopts a hydraulic lifting structure, with a vertical accuracy of ≤0.2° and a vertical stroke distance of 0-1000mm.

6. The tooling system for assembling large cylindrical structural components and built-in equipment according to claim 1, characterized in that: The work platform is made of steel and measures 15m×15m×15mm with a flatness of ≤0.5mm.

7. The assembly method of the tooling system for assembling large cylindrical structural components and built-in equipment according to claim 1, characterized in that: The assembly method steps are as follows: a) Pre-positioning inspection: Before positioning the cylindrical structural component, inspect and determine its status; b) Hoisting: Hoist the cylindrical structural component into the placement area surrounded by several circumferential positioning slots; c) Completion of positioning: Tightly fit the circumferential positioning slots to the perimeter of the cylindrical structural component and position it. Verify the posture of the cylindrical structural component using a level, laser measuring instrument, or total station, where: horizontal position deviation ≤ 1mm; vertical axis inclination ≤ 0.2°; coaxiality between the central axis of the cylindrical structural component and the platform baseline ≤ 0.5mm; ensure the cylindrical structural component is stably placed in a horizontal position. Placement: Ensure uniform stress across the entire cylindrical structural component to maintain a stable posture throughout the assembly cycle; d. Internal equipment installation: Place the component to be docked onto the fine-tuning platform, and move the steel wheel trolley so that the component to be docked is directly below the cylindrical structural component, completing the initial axial alignment of the component to be docked and the cylindrical structural component; slowly send the component to be docked into the cylindrical structural component using the pushing device, and fine-tune the position of the component to be docked using the fine-tuning platform so that its center is precisely aligned with the vertical direction of the cylindrical structural component, and fix the component to be docked; e. Installation completion: Confirm that the connection between the component to be docked and the cylindrical structural component is secure, without tilting or loosening, and move the steel wheel trolley to the initial position.

8. The assembly method of the tooling system for assembling large cylindrical structural components and built-in equipment according to claim 7, characterized in that: In step a, before positioning the cylindrical structural component, check whether there are any foreign objects in the positioning slot to avoid the impact of debris on the installation accuracy. Check whether the mating surface of the cylindrical structural component is flat and smooth, and whether there are any scratches or deformations on the mating surface.

9. The assembly method of the tooling system for assembling large cylindrical structural components and built-in equipment according to claim 7, characterized in that: In step b, there are a total of 7 circumferential positioning slots, which are used to limit the circumferential position of the cylindrical structural component and achieve rapid initial positioning. At the same time, reference marks are set for attitude verification and measurement reference establishment. The assembly method of the tooling system for assembling large cylindrical structural components and built-in equipment according to claim 7 is characterized in that: in step d, before docking, it is first confirmed that the steel wheel frame car has returned to the origin and moved away from the working platform, the pushing device is lowered to the lowest point, and it is checked that the pushing device moves up and down smoothly without jamming, the ground rail is checked to be free of debris, and the steel wheel frame car does not shake obviously.

10. The assembly method of the tooling system for assembling large cylindrical structural components and built-in equipment according to claim 7, characterized in that: In step d, proceed slowly and at a low speed when approaching the assembly position to reduce the risk of collision and jamming.

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