Automatic pressure vessel inner wall welding device

Abstract

The invention relates to the field of pressure containers, and discloses an automatic pressure container inner wall welding device which comprises a placing frame, a barrel body and a protective cover, the inner wall of the protective cover is rotatably connected with a steel pipe rod, the top of the steel pipe rod is fixedly connected with a workbench, and the bottom of the workbench is rotatably connected with a connecting rod; the bottom of the connecting rod is fixedly connected with a gravity bin, the top of the gravity bin is fixedly connected with a plurality of motors, the output ends of the motors are fixedly connected with lead screws, the outer walls of the lead screws are in threaded connection with a falling plate, the bottom of the falling plate is rotationally connected with a plurality of rotating wheels, and the two sides of the gravity bin are fixedly connected with a plurality of clamping blocks. And through cooperative use of the gravity bin, the lead screw, the falling plate and other structures, the device can be integrally jacked up according to construction requirements, then the device is pushed and positioned to a target welding seam, positioning deviation and manual operation time are effectively reduced, and the assembly efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of pressure vessels, in particular to an automatic pressure vessel inner wall welding device. Background Art

[0002] During pressure vessel manufacturing, multiple rectangular plates are typically welded together to form a cylindrical structure. The joints between adjacent cylinders are then welded together to complete the pressure vessel. Traditional welding processes often require workers to enter the cylinder to perform welding operations, especially when performing circular welds on joints. To facilitate welding, the cylinder is typically rotated using a support frame to maintain parallelism between the welding head and the work surface. However, this approach presents a number of technical drawbacks.

[0003] First, during the welding process, workers need to move with the rotation of the cylinder to keep the welding head in a flat position. This requires workers to work inside the cylinder for long periods of time and maintain synchronization with the cylinder's rotation speed to avoid the risk of falls or improper operation. This reliance on manual operation is not only labor-intensive, but also creates an extremely complex working environment within a confined space, making it prone to accidents. Furthermore, if the worker's operating speed is out of sync with the cylinder's rotation speed, it can result in discontinuous welds or weld misalignment, affecting weld quality and the container's sealing.

[0004] Secondly, while existing auxiliary positioning equipment can provide preliminary alignment and support, its adaptability is limited. Especially when welding cylinder sections of varying diameters and lengths, existing equipment often requires manual adjustment and positioning, making it difficult to quickly adapt to varying cylinder dimensions. Furthermore, it's difficult to ensure precise synchronization and stable position between the worktable and protective cover during welding. This results in a low level of automation and limited adaptability to complex welding environments.

[0005] Furthermore, existing welding equipment provides insufficient support for the securing and stability of the cylinder. During the welding process, fluctuations in welding heat and pressure can cause slight deformation or displacement of the cylinder, compromising weld precision and strength. Furthermore, existing welding solutions often lack the ability to dynamically adjust the cylinder's position and securing pressure, leading to unstable welding results and even localized weld deviation and unevenness during extended welds. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the present invention provides an automated pressure vessel inner wall welding device, which solves the problems of complicated operation, low welding accuracy and great safety hazards in the existing technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an automated pressure vessel inner wall welding device, comprising a placing rack, a barrel body, and a protective cover, the inner wall of the protective cover is rotatably connected to a steel pipe rod, the top of the steel pipe rod is fixedly connected to a workbench, the bottom of the workbench is rotatably connected to a connecting rod, the bottom of the connecting rod is fixedly connected to a gravity bin, the top of the gravity bin is fixedly connected to a plurality of motors, the output end of the motor is fixedly connected to a screw rod, the outer wall of the screw rod is threadedly connected to a drop plate, the bottom of the drop plate is rotatably connected to a plurality of wheels, both sides of the gravity bin are fixedly connected to a plurality of blocks, the inner wall of the block is slidably connected to a push bolt, the push bolt passes through the block and is connected to a plurality of positioning slots on the side near the two protective covers, for providing synchronization of the position of the workbench and the protective cover during position transfer, a counterweight assembly is provided on the top of the gravity bin, and a synchronization assembly is provided on the inner wall of the protective cover.

[0008] By adopting the above technical solution, integrated mechanical collaborative control of the automated pressure vessel inner wall welding device during the assembly, positioning, fixing and construction processes is achieved. The rigid connection between the steel pipe rod and the workbench, combined with the serial arrangement of the connecting rod and the gravity bin, constructs an operation support system with good structural stability. The multiple motors and screw devices integrated on the top of the gravity bin can drive the drop plate to move precisely in the vertical direction. In conjunction with the bottom wheel, it can be automatically lifted after the device is hoisted, making it easier for the operator to push the device horizontally along the inner wall of the barrel and quickly position it at the weld position, significantly reducing the positioning time before construction.

[0009] The block and push bolt design provides a synchronous locking function for the device during lateral transfer, ensuring a constant relative position between the workbench and protective cover, and avoiding weld joint errors caused by structural offset. The counterweight assembly, through multiple weighted bins installed on top of the gravity bin, achieves dynamic adjustment of the downward force during the welding phase, enhancing the fit between the device and the inner wall of the barrel. The release of the rotating wheel forms a vertical downward pressure state, further improving structural stability and welding accuracy.

[0010] Furthermore, the synchronization assembly within the protective cover meshes with the extrusion plates through gears, auxiliary gears, and toothed plates. Driven by the motor, multiple extrusion plates are synchronously extended to the four corners of the barrel's inner wall, forming multi-point support and ensuring reliable fixation. A hidden slot structure accommodates the extrusion plates during movement, preventing structural interference and enhancing the device's sliding freedom. The arrangement of the toothed ring and active gear streamlines the motor-driven transmission network, ensuring coordinated and responsive overall motion, demonstrating the device's excellent adaptability and automation capabilities for efficient welding scenarios.

[0011] Preferably, a plurality of barrels are installed on the top of the placement rack, which are used to drive the barrels to rotate to change the weld angle.

[0012] Preferably, the synchronization assembly includes multiple gears, the gears are rotatably connected to the inner wall of the protective cover, the inner wall of the protective cover is fixedly connected to multiple auxiliary plates, one side of the gear is fixedly connected to an auxiliary gear, the inner wall of the auxiliary plate is slidably connected to a tooth plate, the top of the tooth plate is fixedly connected to an extrusion plate, the bottom side of the extrusion plate is fixedly connected to a stabilizing block, and the adjacent sides of multiple protective covers are fixedly connected to gear rings.

[0013] Preferably, the tooth plate and the auxiliary gear are connected by tooth end meshing, and a plurality of the gear tooth ends are meshed with the inner wall of the gear ring.

[0014] Preferably, a hidden groove is provided on the outer wall of the protective cover, and the extrusion plate is slidably connected to the inner wall of the hidden groove.

[0015] Preferably, the screw rod is rotatably connected to the inner wall of the gravity bin, and the drop plate is slidably connected to the inner wall of the gravity bin.

[0016] Preferably, the counterweight assembly includes a weight adding bin, a plurality of the weight adding bins are opened on the top of the gravity bin, and both ends of the top of the gravity bin are fixedly connected with a protective plate.

[0017] Preferably, the outer wall of the protective cover is fixedly connected to a motor, and one of the gears is fixedly connected to the output end of the motor.

[0018] Preferably, the extrusion plate is slidably connected to the four corners of the inner wall of the barrel.

[0019] Preferably, the multiple barrel bodies are slidably connected, and the rotating wheel is slidably connected to the inner walls of the multiple barrel bodies.

[0020] Working principle: Before using this pressure vessel inner wall welding device, the staff first docks and installs multiple welding sections of the barrel on the top of multiple placement racks in sequence. After alignment, the device is hoisted to the inner wall of the barrel by a crane to complete the initial preparation work.

[0021] After completing the preparatory work, the device is hoisted as a whole to one side of the inner wall of the barrel, and the push bolt is slid through the block to the inside of the corresponding slot. This setting can lock the position of the steel pipe rod on the inner wall of the protective cover, and can always keep the gravity bin vertically downward; after completing the operation, multiple motors can be turned on synchronously, and the motor drives the screw rod to rotate, and then drives the drop plate downward from the inner wall of the gravity bin through the threaded connection. As the push goes deeper, it will exceed the radius of the protective cover and lift the entire device. At this time, the staff can push the device as a whole to move horizontally on the inner wall of the barrel, stop at the weld of the two barrels and complete the positioning. After positioning is completed, weights are added inside the weight bin according to the weight of the construction workers to achieve the downward gravity of the gravity bin.

[0022] After the counterweight adjustment is completed, the motor can be driven to drive the gears inside the protective cover to rotate through the output of the motor, and the multiple gears are synchronously driven through the meshing connection with the gear ring to make the auxiliary gears mesh with the gear plate under the limit of the auxiliary plate, and then the extrusion plate is pushed to slide out from the inner wall of the hidden groove until the multiple extrusion plates contact the inner wall of the barrel body at multiple points, thereby completing the fixation of the device on the inner wall of the barrel body.

[0023] After the position is fixed, the construction personnel can enter the workbench and start the motor to reverse the drive screw to make the drop plate return to the initial position of the inner wall of the gravity bin, disconnect the contact between the wheel and the barrel, and gradually cancel the connection between the push bolt and the positioning slot. Under the influence of gravity, the gravity bin will naturally fall downward. At this time, the internal power of the placement rack can be turned on to gradually drive the barrel to rotate, and cooperate with the construction personnel to weld the welds on the top of the workbench to complete the welding of this section of the barrel. After completing this section, the above steps can be repeated to continue welding the inner wall of the next section of the barrel.

[0024] The present invention provides an automated pressure vessel inner wall welding device, which has the following beneficial effects: 1. The present invention achieves the technical effect of automatic lifting and stable support when the device moves horizontally on the inner wall of the barrel through the coordinated use of structures such as the gravity bin, the screw rod, and the drop plate. The structure can lift the entire device according to construction requirements and then push it to the target weld, effectively reducing positioning deviation and manual operation time, and improving assembly efficiency.

[0025] 2. The present invention achieves the technical effect of multi-point fixation and steady-state support of the device during the welding process through the coordinated use of structures such as motors, gears, gear rings, auxiliary gears and extrusion plates. It can make the device firmly fit the inner wall of the barrel before welding, reduce the risk of displacement caused by vibration or gravity during operation, and significantly improve the accuracy and safety of the weld.

[0026] 3. The present invention achieves the technical effect of rapid deployment and reuse of the device between different welding sections through the coordinated use of slidably connected multi-section barrels, blocks, push bolts and other structures, reduces the cost of repeated purchase of the device during the overall construction process, avoids the waste of resources caused by the parallel deployment of multiple devices, and improves the economy and maneuverability of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention after installation; Figure 2 It is a three-dimensional schematic diagram of the present invention; Figure 3 This is an exploded schematic diagram of the protective cover structure of the present invention; Figure 4 It is a three-dimensional schematic diagram of the gear structure of the present invention; Figure 5 This is a schematic diagram of the gravity bin structure of the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the gravity bin of the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the card block of the present invention.

[0028] Among them, 1. Placement rack; 2. Barrel body; 3. Protective cover; 4. Steel pipe rod; 5. Gear; 6. Motor; 7. Auxiliary gear; 8. Tooth plate; 9. Extrusion plate; 10. Workbench; 11. Connecting rod; 12. Gravity bin; 13. Protective plate; 14. Weight bin; 15. Motor; 16. Screw; 17. Drop plate; 18. Rotating wheel; 19. Block; 20. Push bolt; 21. Auxiliary plate; 22. Hidden slot; 23. Gear ring; 24. Stabilizing block; 25. Positioning slot. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Please see the attached Figure 2 -Attached Figure 4 The embodiment of the present invention provides an automated pressure vessel inner wall welding device, including a protective cover 3, the inner wall of the protective cover 3 is rotatably connected to a steel pipe rod 4, the top of the steel pipe rod 4 is fixedly connected to a workbench 10, the bottom of the workbench 10 is rotatably connected to a connecting rod 11, the bottom of the connecting rod 11 is fixedly connected to a gravity bin 12, the top of the gravity bin 12 is fixedly connected to a plurality of motors 15, the output end of the motor 15 is fixedly connected to a screw rod 16, the outer wall of the screw rod 16 is threadedly connected to a drop plate 17, the bottom of the drop plate 17 is rotatably connected to a plurality of wheels 18, and a plurality of blocks 19 are fixedly connected to both sides of the gravity bin 12, the inner wall of the block 19 is slidably connected to a push bolt 20, the push bolt 20 passes through the block 19 and is connected to a plurality of positioning slots 25 on the side close to the two protective covers 3, for providing position synchronization between the workbench 10 and the protective cover 3 during position transfer.

[0031] The screw rod 16 is rotatably connected to the inner wall of the gravity bin 12 , and the drop plate 17 is slidably connected to the inner wall of the gravity bin 12 .

[0032] Specifically, the main body of the device is arranged inside the barrel body 2, and the structural design is developed around the protective cover 3, and the inner wall thereof is rotatably connected to a steel pipe rod 4. The top of the steel pipe rod 4 is fixedly connected to the workbench 10, providing a working platform for construction workers. The bottom of the workbench 10 is connected to the gravity bin 12 through a connecting rod 11 to form a rigid support structure. A plurality of motors 15 are arranged on the top of the gravity bin 12, and the output end of the motor 15 is connected to the screw rod 16. The screw rod 16 passes through the inner cavity of the gravity bin 12 and is threadedly connected to the drop plate 17. The drop plate 17 can move up and down along the screw rod 16, and a number of wheels 18 are connected to the bottom thereof. The wheel 18 is used to contact the inner wall of the barrel body 2 after the device is lifted, thereby realizing temporary lifting of the device. The screw rod 16 is installed on the inner wall of the gravity bin 12 by rotation, and the drop plate 17 fits into its interior in a sliding manner, thereby improving the smoothness of the structural movement and reducing the risk of jamming. Blocks 19 are set on both sides of the gravity bin 12, and push bolts 20 are slidably connected inside the block 19. The push bolts 20 pass through the block 19 and cooperate with the positioning grooves 25 on the adjacent protective cover 3. When the device is laterally displaced or rotated, the position of the protective cover 3 and the workbench 10 are kept synchronized to prevent tilting or offset.

[0033] Through the coordinated use of components such as the motor 15, the screw 16, the drop plate 17, and the wheel 18, the device can be automatically lifted to the inner wall of the barrel 2 and stably clamped, thereby significantly improving the efficiency of pre-construction preparations. There is no need for manual repeated adjustment of the height and position of the device, and a single person can complete the installation and deployment, making on-site operations more efficient and safer. Through the design of the push bolt 20 and the clamping block 19, precise linkage between the protective cover 3 and the workbench 10 during lateral movement is achieved, avoiding structural distortion or deflection and improving the overall stability of the device. During the jacking stage of the device, the wheel 18 contacts the barrel wall to form a stable support; during the falling stage, the wheel 18 is separated from the barrel 2, the drop plate 17 retracts, and the gravity bin 12 droops, automatically restoring the original center of gravity.

[0034] The device also features a modular construction, with its core lifting and support systems built around mechanical components. This eliminates the need for expensive sensors or external positioning systems, resulting in low manufacturing costs and ease of mass deployment and rapid replacement. For welding multiple sections, a single unit can be used to advance the work sequentially, eliminating the need for multiple sets of equipment. This significantly reduces overall project costs.

[0035] Please see the attached Figure 1 , also includes a placement rack 1 and a barrel body 2. Multiple barrel bodies 2 are installed on the top of the placement rack 1, which are used to drive the barrel body 2 to rotate to complete the change of the weld angle. The multiple barrel bodies 2 are slidingly connected, and the rotating wheel 18 is slidingly connected to the inner walls of the multiple barrel bodies 2.

[0036] Specifically, the barrel body 2 is sequentially installed on the top of the placement rack 1 by means of a sliding connection. The placement rack 1 not only plays a supporting role, but also integrates a drive structure, which can realize the rotation operation of the barrel body 2, and is used to adjust the weld angle during the welding process. By rotating the barrel body 2, the part to be welded can be accurately aligned with the construction personnel's operating area, thereby improving work efficiency and welding accuracy. The interior of the barrel body 2 is slidably connected to the rotating wheel 18 to ensure that the device can flexibly move forward or backward in the barrel body 2, and cooperate with the additional infrared positioning system to achieve precise parking, and is not prone to jamming. The rotating wheel 18 plays a supporting role before welding, and retracts through the drop plate 17 in the post-weld stage to achieve structural detachment, ensuring that the device can smoothly move to the next section to continue operation.

[0037] The coordinated design of the support frame 1 and barrel 2 enables the equipment to be moved sequentially between multiple welding sections. After each weld, workers do not need to disassemble the device; they simply drive the support frame 1 or the crane to adjust its position, and the entire device can be slid to the next barrel 2 section for continued use.

[0038] This structure improves construction efficiency and reduces the preparation time for repeated equipment deployment. At the same time, since the multiple barrels 2 are connected by sliding, the device will not be blocked by interference from the connection parts during the sliding process on the inner wall, and has good sliding continuity and stronger adaptability.

[0039] Combined with the core structures such as the protective cover 3, steel pipe rod 4, workbench 10, gravity bin 12, screw 16 and push bolt 20, the device of the present invention can realize automatic or semi-automatic control of the whole process from loading, positioning, welding to unloading. Through the coordinated use of the placement frame 1, barrel 2 and device structure, the technical effect of continuous construction, angle adjustment and position control of the device between multiple welds is achieved, effectively avoiding the problems of traditional manual handling and positioning that are time-consuming and have large errors. The system does not require additional rails or positioning guide devices, and only relies on mechanical sliding and rotating structures to complete precise operation processes, reduce construction complexity and on-site technical requirements, and improve the economy of the overall system.

[0040] Please see the attached Figure 2 -Attached Figure 4 The synchronization assembly includes multiple gears 5, which are rotatably connected to the inner wall of the protective cover 3. The inner wall of the protective cover 3 is fixedly connected to multiple auxiliary plates 21. An auxiliary gear 7 is fixedly connected to one side of the gear 5. A toothed plate 8 is slidably connected to the inner wall of the auxiliary plate 21. The top of the toothed plate 8 is fixedly connected to an extrusion plate 9. A stabilizing block 24 is fixedly connected to the bottom side of the extrusion plate 9. A gear ring 23 is fixedly connected to the adjacent side of the multiple protective covers 3. The toothed plate 8 and the auxiliary gear 7 are meshed with each other. The toothed ends of the multiple gears 5 mesh with the inner wall of the gear ring 23. The outer wall of the protective cover 3 is provided with a hidden groove 22. The extrusion plate 9 is slidably connected to the inner wall of the hidden groove 22. The extrusion plate 9 is slidably connected to the four corners of the inner wall of the barrel body 2.

[0041] Specifically, the synchronization assembly includes multiple gears 5, which are rotatably mounted on the inner wall of the protective cover 3 and evenly distributed to form a drive network. The inner wall of the protective cover 3 is further fixed with multiple auxiliary plates 21, which serve as a support base for the gear 5 structure and also guide the sliding path of the internal moving parts. An auxiliary gear 7 is fixedly connected to one side of each gear 5. The auxiliary gear 7 meshes with the tooth end of a tooth plate 8 that is slidably connected to the inner wall of the auxiliary plate 21. The top of the tooth plate 8 is fixedly connected to an extrusion plate 9, and a stabilizing block 24 is also provided on one side of the bottom of the extrusion plate 9 to enhance the local stability of the compression structure.

[0042] In order to coordinate the linkage of the above components, a gear ring 23 is fixedly installed on the adjacent side of the multiple protective covers 3. The external tooth ends of the multiple gears 5 are engaged with the inner wall of the gear ring 23, forming a closed-loop transmission under the drive of the motor 6, driving all the gears 5 to rotate synchronously.

[0043] In actual operation, the motor 6 starts to drive the gear 5 to rotate, and the gear 5 drives the entire assembly to move synchronously by meshing with the gear ring 23. The auxiliary gear 7 drives the tooth plate 8 to slide along the inner wall of the auxiliary plate 21, driving the extrusion plate 9 to slide out of the hidden groove 22 and extend to the four corners of the inner wall of the barrel body 2. The extrusion plate 9 forms multi-point contact with the barrel body 2, and at the same time relies on the stabilizing block 24 to form a stronger support effect, effectively offsetting the vibration and external force disturbance occurring during the welding operation. This structure has a compact layout and fast power response. It can complete the action conversion from loosening to tightening in a short time, and ensure that the clamping force is evenly distributed to prevent local deformation or equipment displacement due to single-point force.

[0044] Hidden groove 22, a structural recess in the outer wall of protective cover 3, provides space for the initial storage of extrusion plate 9. This design not only reduces the overall size of the device when not fixed, but also prevents interference between the extrusion plate 9 and the barrel 2 when not in operation. During operation, the extrusion plate 9 slides out of the hidden groove 22, providing a firm support against the inner wall of the barrel 2. After the operation is completed, it automatically retracts, maintaining the device's freedom of movement and facilitating the connection of the next welding operation.

[0045] The coordinated use of motor 6, gear 5, auxiliary gear 7, tooth plate 8, extrusion plate 9, and gear ring 23 achieves the technical effect of automatically stretching, tightening, and stably locking at multiple points on the inner wall of barrel body 2, replacing manual fixtures or external clamps, significantly improving the system's automation level and the stability of welding operations. Compared to traditional single-point structures, the multi-point distributed support method has stronger anti-interference performance. Even in uneven or vibrating working conditions, it can maintain a stable fit of the device to the inner wall of barrel body 2, significantly reducing the risk of miswelding or misalignment.

[0046] Please see the attached Figure 5 -Attached Figure 6The counterweight assembly includes a weight adding bin 14 , and multiple weight adding bins 14 are opened on the top of the gravity bin 12 , and both ends of the top of the gravity bin 12 are fixedly connected with a protective plate 13 .

[0047] Specifically, to enhance the overall stability of the device during welding and improve gravity-guided control, a counterweight assembly is provided. This assembly includes multiple weight bins 14, evenly distributed across the top area of the gravity bin 12. Construction personnel can sequentially add weights or other counterweight materials to the bins 14 as needed, flexibly adjusting the center of gravity and downward force of the entire gravity bin 12 system. This structural layout enables rapid response to the device's deadweight status under varying construction conditions, making it particularly suitable for complex working conditions such as high-altitude operations or uneven wall surfaces.

[0048] To prevent the gravity bin 12 from shifting due to external forces during movement or operation, protective plates 13 are symmetrically positioned at each end. These plates 13 not only provide structural reinforcement but also physically limit the device during slippage or gravity drop, preventing impact forces from directly impacting key components such as the motor 15 and screw 16. Furthermore, the presence of protective plates 13 at each end of the weight bin 14 effectively prevents inertial displacement of the counterweight material, further enhancing the structural reliability of the overall counterweight system.

[0049] The coordinated use of the weight bin 14, protective plate 13, and gravity bin 12 achieves the technical effects of adaptive gravity adjustment and stable downward pressure control. Compared to the traditional structure that relies on fixed weights, this solution allows for flexible weight adjustment according to the welding environment and changes in the weight of personnel. It not only improves the adaptability of the device between different sections, but also greatly improves the ease of operation for on-site construction personnel. The weight assembly and the screw rod 16 propulsion structure are independent of each other but operate in coordination, ensuring that the drop plate 17 always maintains stable guidance under stress without eccentricity or jamming, effectively ensuring that the lifting and release process of the device is smooth and reliable.

[0050] Please see the attached Figure 2 -Attached Figure 3 The outer wall of the protective cover 3 is fixedly connected to the motor 6, and one of the gears 5 is fixedly connected to the output end of the motor 6.

[0051] Specifically, to achieve unified drive and precise control of the multiple synchronized components within the device, a motor 6 is fixedly mounted on the outer wall of the protective cover 3. This motor 6 serves as the device's primary power source, with its output directly connected to the axis of a gear 5, making this gear 5 the driving wheel, the first to rotate upon activation of the motor 6. Through the meshing linkage of this driving gear 5 and the ring gear 23, the remaining gears 5 are driven to rotate synchronously, thus forming a complete linked transmission network.

[0052] The external installation of the motor 6 not only avoids heat source concentration inside the device, causing heat dissipation difficulties, but also facilitates the subsequent maintenance or replacement of the motor 6 components. The driving gear 5 acts as a relay element between the motor 6 and the gear ring 23. Its structure maintains high-precision meshing with the gear ring 23. Its movement accuracy is directly related to the synchronous action effect of multiple auxiliary gears 7, gear plates 8, and extrusion plates 9. By rationally designing the number of gear teeth and the pitch of the gear ring 23, the linear response and synchronous expansion of the device's clamping action are achieved, ensuring that multiple extrusion plates 9 can simultaneously achieve compression and locking with each contact point on the inner wall of the barrel body 2 in a short period of time.

[0053] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automated pressure vessel inner wall welding device, comprising a placement rack (1), a barrel (2), and a protective cover (3), characterized in that: The inner wall of the protective cover (3) is rotatably connected to a steel pipe rod (4), the top of the steel pipe rod (4) is fixedly connected to a workbench (10), the bottom of the workbench (10) is rotatably connected to a connecting rod (11), the bottom of the connecting rod (11) is fixedly connected to a gravity bin (12), the top of the gravity bin (12) is fixedly connected to a plurality of motors (15), the output end of the motor (15) is fixedly connected to a screw rod (16), the outer wall of the screw rod (16) is threadedly connected to a drop plate (17), the drop plate (17) ) is rotatably connected to a plurality of rotating wheels (18), a plurality of blocks (19) are fixedly connected to both sides of the gravity bin (12), and a push bolt (20) is slidably connected to the inner wall of the block (19), and the push bolt (20) passes through the block (19) and is connected to a plurality of positioning slots (25) on the side close to the two protective covers (3), and is used to provide position synchronization between the workbench (10) and the protective cover (3) during position transfer. A counterweight assembly is provided on the top of the gravity bin (12), and a synchronization assembly is provided on the inner wall of the protective cover (3).

2. The automated pressure vessel inner wall welding device according to claim 1, characterized in that: A plurality of barrels (2) are installed on the top of the placement rack (1), which are used to drive the barrels (2) to rotate to change the angle of the weld.

3. The automated pressure vessel inner wall welding device according to claim 1, characterized in that: The synchronization component comprises a plurality of gears (5), the gears (5) being rotatably connected to the inner wall of the protective cover (3), the inner wall of the protective cover (3) being fixedly connected to a plurality of auxiliary plates (21), one side of the gears (5) being fixedly connected to an auxiliary gear (7), the inner wall of the auxiliary plate (21) being slidably connected to a tooth plate (8), the top of the tooth plate (8) being fixedly connected to an extrusion plate (9), the bottom side of the extrusion plate (9) being fixedly connected to a stabilizing block (24), and adjacent sides of the plurality of protective covers (3) being fixedly connected to a tooth ring (23).

4. The automated pressure vessel inner wall welding device according to claim 3, characterized in that: The tooth plate (8) and the auxiliary gear (7) are connected in a tooth-end meshing manner, and the tooth ends of the plurality of gears (5) are meshed with the inner wall of the gear ring (23).

5. The automated pressure vessel inner wall welding device according to claim 3, characterized in that: A hidden groove (22) is provided on the outer wall of the protective cover (3), and the extrusion plate (9) is slidably connected to the inner wall of the hidden groove (22).

6. The automated pressure vessel inner wall welding device according to claim 1, characterized in that: The screw rod (16) is rotatably connected to the inner wall of the gravity bin (12), and the drop plate (17) is slidably connected to the inner wall of the gravity bin (12).

7. The automated pressure vessel inner wall welding device according to claim 1, characterized in that: The counterweight assembly comprises a weight adding bin (14), a plurality of the weight adding bins (14) are opened on the top of the gravity bin (12), and both ends of the top of the gravity bin (12) are fixedly connected with a protective plate (13).

8. The automated pressure vessel inner wall welding device according to claim 3, characterized in that: The outer wall of the protective cover (3) is fixedly connected to a motor (6), and one of the gears (5) is fixedly connected to the output end of the motor (6).

9. The automated pressure vessel inner wall welding device according to claim 3, characterized in that: The extrusion plates (9) are slidably connected to the four corners of the inner wall of the barrel body (2).

10. The automated pressure vessel inner wall welding device according to claim 1, characterized in that: The plurality of barrel bodies (2) are slidably connected, and the rotating wheel (18) is slidably connected to the inner walls of the plurality of barrel bodies (2).

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