Milling and welding integrated device for arc-shaped longitudinal seam at bottom of storage tank

Abstract

The utility model discloses a storage tank bottom arc longitudinal seam milling and welding integrated device, which comprises a support frame, a plurality of arc longitudinal seams and a plurality of arc longitudinal seams, the support frame comprises a base, a top seat and a plurality of support ribs arranged between the base and the top seat, and bushing components are arranged on the support ribs; the shape of the scalloped segment plate supporting bodies is matched with that of welded scalloped segment plates at the bottom of the storage box, and the scalloped segment plate supporting bodies are movably arranged on the upper side of the lining assembly and can be combined to form an arc surface; the lifting mechanism is arranged below the scalloped segment plate supporting body and can drive the scalloped segment plate supporting body to ascend and descend; the pressing structure can press the scalloped segment plate on the scalloped segment plate supporting body; the device is provided with a plurality of scalloped segment plate supporting bodies which can be combined into an arc surface shape similar to the bottom of a storage tank and can support scalloped segment plates, the scalloped segment plate supporting bodies can drive the scalloped segment plates on the scalloped segment plate supporting bodies to rise under the action of the lifting mechanism, and the scalloped segment plates can be milled before welding.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding equipment, and more specifically relates to an integrated device for milling and welding an arc-shaped longitudinal seam on a tank bottom. Background Art

[0002] The fuel tank is a crucial component of the launch vehicle's body, and the ellipsoidal structure at the tank's base is particularly heavy and challenging to manufacture. The ellipsoid is typically welded together from eight melon-shaped panels, connected sequentially by eight longitudinal seams and then closed.

[0003] Currently, most melon-slice plate welding processes rely on simple fixtures that rely on manual adjustment and clamping. This is labor-intensive and inefficient, making clamping difficult, time-consuming, and labor-intensive. Manual welding, with its high workload and uneven heat input, coupled with low and uneven clamping force, makes weld quality difficult to control.

[0004] Although some companies have achieved automatic welding, the melon-shaped plates are thin-walled structural parts with limited rigidity, making them very easy to deform. During the welding process, it is even more difficult to ensure the stability of the structure. After each longitudinal seam is welded, its external structure will have a certain amount of deformation. As the number of welds increases, it becomes increasingly difficult to ensure the required welding accuracy when assembling multiple melon-shaped plates. In addition, the existing tooling structure cannot achieve online milling before welding and has a single function. Utility Model Content

[0005] The purpose of the utility model is to address the deficiencies in the prior art and provide an integrated device for milling and welding the arc-shaped longitudinal seams of a tank bottom. The device has a plurality of melon-shaped plate supports that can be combined into a circular arc surface shape similar to the tank bottom, which can support the melon-shaped plates. Under the action of a lifting mechanism, the melon-shaped plate supports can drive the melon-shaped plates thereon to rise, making it easier to mill the melon-shaped plates before welding.

[0006] In order to achieve the above-mentioned object, the utility model provides an integrated device for milling and welding an arc-shaped longitudinal seam of a tank bottom, the device comprising:

[0007] The support frame includes a base, a top seat, and a plurality of support ribs arranged between the base and the top seat, wherein the support ribs are provided with bushing assemblies;

[0008] A plurality of melon-shaped plate supports, the shape of which matches the shape of the welded melon-shaped plate on the tank bottom, the plurality of melon-shaped plate supports being movably disposed on the upper side of the bushing assembly and capable of being combined to form an arc surface;

[0009] A lifting mechanism is provided below the melon-shaped plate support body and is capable of driving the melon-shaped plate support body to move up and down;

[0010] The pressing structure can press the melon-shaped plate onto the melon-shaped plate support body.

[0011] Optionally, the lifting mechanism includes a guide column and a hydraulic cylinder assembly, one end of the guide column is connected to the melon-shaped plate support body, and the other end of the guide column is slidably arranged in the support seat on the base, one end of the hydraulic cylinder assembly is hinged to the melon-shaped plate support body, and the other end of the hydraulic cylinder assembly is connected to the support seat.

[0012] Optionally, a groove is provided in the middle of the bushing assembly, and the groove corresponds to the gap between two adjacent welded melon-shaped plates.

[0013] Optionally, the top seat is in a circular ring shape, and a plurality of hook shafts are provided on the inner circumference of the top seat.

[0014] Optionally, a turntable is further included, and the turntable is arranged below the base.

[0015] Optionally, the clamping structure includes a force-bearing seat, which is arc-shaped, one end of which is hinged to the turntable, and the other end of the force-bearing seat is provided with a hook mechanism that is detachably matched with the hook shaft, and a key clamping mechanism is provided on one side of the force-bearing seat, and the key clamping mechanism can press the welded melon petal plate onto the melon petal plate support body.

[0016] Optionally, the hook mechanism includes a hook and a cylinder assembly, the hook is U-shaped, the open end of the hook is hinged to the force-bearing seat through a hinge shaft, a through groove matching the hook shaft is formed inside the hook, a crank arm is provided at one end of the hinge shaft, the shell end of the cylinder assembly is hinged to the force-bearing seat, and the telescopic end of the cylinder assembly is hinged to the crank arm.

[0017] Optionally, the key pressing mechanism includes an airbag, multiple key pressure plates and a key pressure plate seat, the airbag is arranged in the airbag groove on the force-bearing seat, the key pressure plate is arranged below the airbag, the key pressure plate is movably arranged in the key pressure plate seat, the key pressure plate seat is connected to the force-bearing seat, and a reset spring is arranged between the key pressure plate and the key pressure plate seat.

[0018] Optionally, two key pressing mechanisms are provided on each of the force-bearing seats, and the two key pressing mechanisms can press two adjacent melon-shaped plates.

[0019] Optionally, a rotary drive structure is provided on the turntable, and the rotary drive structure can drive the turntable to rotate.

[0020] The utility model provides an integrated device for milling and welding arc-shaped longitudinal seams on the bottom of a tank, which has the following beneficial effects:

[0021] 1. The device has multiple melon-shaped plate supports that can be combined into a circular arc shape similar to the bottom of a tank. The supports can support the melon-shaped plates. Under the action of the lifting mechanism, the melon-shaped plate supports can drive the melon-shaped plates on them to rise, making it easier to mill the melon-shaped plates before welding.

[0022] 2. The device can press the melon-shaped plate onto the melon-shaped plate support by using a pressing structure, and can position two adjacent melon-shaped plates on two adjacent melon-shaped plate supports, thereby ensuring the precise pairing of each weld and improving the weld quality.

[0023] Other features and advantages of the present invention will be described in detail in the subsequent detailed description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0025] Figure 1 The figure shows the overall structure of an integrated device for milling and welding an arc-shaped longitudinal seam of a tank bottom according to an embodiment of the present utility model.

[0026] Figure 2 The present invention shows a partial structural diagram of a device for integrating milling and welding an arc-shaped longitudinal seam of a tank bottom according to an embodiment of the present invention.

[0027] Figure 3 A schematic diagram of the clamping structure of an integrated device for milling and welding an arc-shaped longitudinal seam on a tank bottom according to an embodiment of the present utility model is shown.

[0028] Figure 4 A schematic cross-sectional view of a clamping structure of an integrated device for milling and welding an arc-shaped longitudinal seam of a tank bottom according to an embodiment of the present utility model is shown.

[0029] Description of reference numerals:

[0030] 1. Base; 2. Top seat; 3. Support rib; 4. Bushing assembly; 5. Melon-shaped plate support body; 6. Guide column; 7. Hydraulic cylinder assembly; 8. Support seat; 9. Hook shaft; 10. Turntable; 11. Load-bearing seat; 12. Hook; 13. Cylinder assembly; 14. Crank arm; 15. Airbag; 16. Key pressure plate; 17. Key pressure plate seat; 18. Return spring. DETAILED DESCRIPTION

[0031] The following describes preferred embodiments of the present invention in greater detail. Although preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0032] The utility model provides an integrated device for milling and welding an arc-shaped longitudinal seam on a tank bottom, the device comprising:

[0033] The support frame includes a base, a top seat, and a plurality of support ribs arranged between the base and the top seat, wherein the support ribs are provided with bushing assemblies;

[0034] Multiple melon-shaped plate supports, the shape of which matches the shape of the welded melon-shaped plate on the tank bottom, the multiple melon-shaped plate supports being movably disposed on the upper side of the bushing assembly and capable of being combined to form an arc surface;

[0035] A lifting mechanism is provided below the melon-peel plate support body and is capable of driving the melon-peel plate support body to move up and down;

[0036] The pressing structure can press the melon-shaped plate onto the melon-shaped plate support body.

[0037] Specifically, the base can be circular or annular, and the base and the top seat are parallel to each other and are spaced apart. A plurality of support ribs connect the base and the top seat to form a cage-shaped support frame. The bushing assembly is arranged on the support ribs. Each melon-petal plate support body is connected to two adjacent support ribs. The plurality of melon-petal plate support bodies can be combined to form an arc surface that matches the ellipsoidal shape of the tank bottom. The clamping mechanism can press each melon-petal plate on the corresponding melon-petal plate support body. After the lifting mechanism drives the melon-petal plate support body to drive the melon-petal plate to rise, the melon-petal plate is separated from the bushing assembly, providing sufficient milling space, which is convenient for milling the welding edge of the melon-petal plate, thereby improving the welding quality.

[0038] Optionally, the lifting mechanism includes a guide column and a hydraulic cylinder assembly, one end of the guide column is connected to the melon-shaped plate support body, and the other end of the guide column is slidably set in the support seat on the base, one end of the hydraulic cylinder assembly is hinged to the melon-shaped plate support body, and the other end of the hydraulic cylinder assembly is connected to the support seat.

[0039] Specifically, a guide hole is provided in the support seat, and a guide column is slidably provided in the guide hole to play a guiding role. The extension and contraction of the hydraulic cylinder assembly can drive the melon-shaped plate support body to rise and fall according to the guide direction of the guide hole, so that the separation distance between each position of the welding edge of the melon-shaped plate and the bushing assembly is more uniform.

[0040] Optionally, a groove is provided in the middle of the bushing assembly, and the groove corresponds to the gap between two adjacent welded melon-shaped plates.

[0041] Specifically, the groove is a welding process groove, which facilitates welding between two adjacent melon-shaped plates.

[0042] Optionally, the top seat is annular, and a plurality of hook shafts are provided on the inner circumference of the top seat.

[0043] Specifically, the hook shafts are evenly distributed along the radial direction of the top seat, and the hook shafts are installed on the inner periphery of the top seat through the mounting seat.

[0044] Optionally, a turntable is further included, and the turntable is arranged below the base.

[0045] Specifically, the provision of the turntable can facilitate the rotation of the support frame and the components on the support frame, and facilitate the switching of the welds to be welded.

[0046] Optionally, the clamping structure includes a load-bearing seat, which is arc-shaped, one end of which is hinged to the turntable, and the other end of which is provided with a hook mechanism that is detachably matched with the hook shaft, and one side of the load-bearing seat is provided with a key clamping mechanism, which can press the welded melon flap plate onto the melon flap plate support body.

[0047] Specifically, the clamping structure is connected to the turntable and can rotate relative to the support frame and the components on the support frame. The hook mechanism on the clamping structure is detachably connected to the hook shaft. After connection, the melon flap on the melon flap support body is clamped and positioned through the key clamping mechanism.

[0048] Optionally, the hook mechanism includes a hook and a cylinder assembly, the hook is U-shaped, the open end of the hook is hinged to the load-bearing seat through a hinge shaft, a through groove matching the hook shaft is formed inside the hook, a crank arm is provided at one end of the hinge shaft, the shell end of the cylinder assembly is hinged to the load-bearing seat, and the telescopic end of the cylinder assembly is hinged to the crank arm.

[0049] Specifically, the extension and retraction of the telescopic end of the cylinder assembly can drive the hinge shaft and the hook connected to the hinge shaft to rotate through the crank arm, and the barrel groove formed on the hook is sleeved on the hook shaft to realize the connection between the hook mechanism and the hook shaft.

[0050] Optionally, the key pressing mechanism includes an airbag, multiple key pressure plates and a key pressure plate seat, the airbag is arranged in the airbag groove on the load-bearing seat, the key pressure plate is arranged below the airbag, the key pressure plate is movably arranged in the key pressure plate seat, the key pressure plate seat is connected to the load-bearing seat, and a reset spring is arranged between the key pressure plate and the key pressure plate seat.

[0051] Specifically, the load-bearing seat is the load-bearing body when the airbag presses down the melon-shaped plate, and the arc-shaped load-bearing seat is connected to the side of the turntable; the airbag is installed in the airbag groove on the load-bearing seat, and the lower side contacts the key pressure plate to provide power for pressing the key pressure plate; the key pressure plate seat is fixed on the side of the load-bearing seat, and the keys are installed in the groove of the load-bearing seat; in one example, each key pressure plate is equipped with a tension spring, one end of the tension spring is fixed on the key pressure plate seat, and the other end is fixed on the key pressure plate, so as to realize the reset of the key pressure plate after being pressed down.

[0052] Optionally, two key pressing mechanisms are provided on each load-bearing seat, and the two key pressing mechanisms can press two adjacent melon-shaped plates.

[0053] Specifically, the two key pressing mechanisms on each load-bearing seat are symmetrically arranged, and the two key pressing mechanisms can respectively press and fix two adjacent melon-shaped plates, which facilitates welding and improves welding quality.

[0054] Optionally, a rotary drive structure is provided on the turntable, and the rotary drive structure can drive the turntable to rotate.

[0055] Example

[0056] like Figures 1 to 4 As shown, the utility model provides an integrated device for milling and welding an arc-shaped longitudinal seam on the bottom of a tank, the device comprising:

[0057] The support frame includes a base 1, a top seat 2, and eight support ribs 3 arranged between the base 1 and the top seat 2, and a bushing assembly 4 is provided on the support rib 3;

[0058] 8 melon-shaped support members 5, the shape of which matches the shape of the welded melon-shaped support members on the tank bottom. The 8 melon-shaped support members 5 are movably arranged on the upper side of the bushing assembly 4 and can be combined to form an arc surface;

[0059] The lifting mechanism is provided below the melon-shaped plate support body 5 and can drive the melon-shaped plate support body 5 to move up and down;

[0060] The pressing structure can press the melon-shaped plate onto the melon-shaped plate support body 5.

[0061] In this embodiment, the lifting mechanism includes a guide column 6 and a hydraulic cylinder assembly 7. One end of the guide column 6 is connected to the melon-shaped plate support body 5, and the other end of the guide column 6 is slidably set in the support seat 8 on the base 1. One end of the hydraulic cylinder assembly 7 is hinged to the melon-shaped plate support body 5, and the other end of the hydraulic cylinder assembly 7 is connected to the support seat 8.

[0062] In this embodiment, a groove is provided in the middle of the bushing assembly 4 , and the groove corresponds to the gap between two adjacent welded melon-shaped plates.

[0063] In this embodiment, the top seat 2 is annular, and a plurality of hook shafts 9 are provided on the inner circumference of the top seat 2 .

[0064] In this embodiment, a turntable 10 is further included and is disposed below the base 1 .

[0065] In this embodiment, the clamping structure includes a load-bearing seat 11, which is arc-shaped. One end of the load-bearing seat 11 is hinged to the turntable 10, and the other end of the load-bearing seat 11 is provided with a hook mechanism that can be detachably matched with the hook shaft 9. A key clamping mechanism is provided on one side of the load-bearing seat 11, and the key clamping mechanism can press the welded melon flap plate onto the melon flap plate support body 5.

[0066] In this embodiment, the hook mechanism includes a hook 12 and a cylinder assembly 13. The hook 12 is U-shaped. The open end of the hook 12 is hinged to the force-bearing seat 11 through a hinge shaft. A through groove matching the hook shaft is formed inside the hook 12. A crank arm 14 is provided at one end of the hinge shaft. The shell end of the cylinder assembly 13 is hinged to the force-bearing seat 11, and the telescopic end of the cylinder assembly 13 is hinged to the crank arm 14.

[0067] In this embodiment, the key pressing mechanism includes an airbag 15, multiple key pressure plates 16 and a key pressure plate seat 17. The airbag 15 is arranged in the airbag groove on the force-bearing seat 11, and the key pressure plate 16 is arranged below the airbag 15. The key pressure plate 16 is movably arranged in the key pressure plate seat 17. The key pressure plate seat 17 is connected to the force-bearing seat 11, and a return spring 18 is arranged between the key pressure plate 16 and the key pressure plate seat 17.

[0068] In this embodiment, two key pressing mechanisms are provided on each bearing seat 11 , and the two key pressing mechanisms can press two adjacent melon-shaped plates.

[0069] In this embodiment, a rotary drive structure is provided on the turntable 10 , and the rotary drive structure can drive the turntable 10 to rotate.

[0070] In summary, when the integrated device for milling and welding the arc-shaped longitudinal seam of the tank bottom provided by the present invention is used, the first melon-shaped flap is installed on the melon-shaped flap support body 5; the hydraulic cylinder assembly 7 is pushed out to lift the melon-shaped flap support body 5 together with the melon-shaped flap, so that the edge of the melon-shaped flap to be welded is separated from the bushing assembly by a certain distance; then the cylinder assembly 13 is extended to drive the hook 12 to hang the hook shaft 9: the key pressure plate 16 is pressed down to press the melon-shaped flap onto the melon-shaped flap support body 5, the milling mechanism is in place, and milling begins; after milling is completed, the key pressure plate 16 is lifted, the hydraulic cylinder assembly 7 is retracted, and the melon-shaped flap support body 5 returns to its original position; then another melon-shaped flap is installed on the adjacent melon-shaped flap support body 5, and the above actions are repeated to complete the edge milling of this melon-shaped flap; the double-sided key pressure plates 16 on the clamping structure are pressed down at the same time to complete the pre-welding positioning of the workpiece; finally, the two adjacent melon-shaped flaps are welded; the above process is repeated in sequence to complete the welding of 8 arc-shaped longitudinal welds of 8 melon-shaped flaps.

[0071] While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A tank bottom arc-shaped longitudinal seam milling and welding integrated device, characterized in that: The device includes: The support frame includes a base, a top seat, and a plurality of support ribs arranged between the base and the top seat, wherein the support ribs are provided with bushing assemblies; A plurality of melon-shaped plate supports, the shape of which matches the shape of the welded melon-shaped plate on the tank bottom, the plurality of melon-shaped plate supports being movably disposed on the upper side of the bushing assembly and capable of being combined to form an arc surface; A lifting mechanism is provided below the melon-shaped plate support body and is capable of driving the melon-shaped plate support body to move up and down; The pressing structure can press the melon-shaped plate onto the melon-shaped plate support body.

2. The integrated device for milling and welding an arc-shaped longitudinal seam of a tank bottom according to claim 1, characterized in that: The lifting mechanism includes a guide column and a hydraulic cylinder assembly, one end of the guide column is connected to the melon-shaped plate support body, and the other end of the guide column is slidably arranged in the support seat on the base, one end of the hydraulic cylinder assembly is hinged to the melon-shaped plate support body, and the other end of the hydraulic cylinder assembly is connected to the support seat.

3. The integrated device for milling and welding arc-shaped longitudinal seams of a tank bottom according to claim 1, characterized in that: A groove is provided in the middle of the bushing assembly, and the groove corresponds to the gap between two adjacent welded melon-shaped plates.

4. The integrated device for milling and welding an arc-shaped longitudinal seam of a tank bottom according to claim 1, characterized in that: The top seat is in the shape of a circular ring, and a plurality of hook shafts are arranged on the inner circumference of the top seat.

5. The integrated device for milling and welding arc-shaped longitudinal seams of a tank bottom according to claim 4, characterized in that: It also includes a turntable, which is arranged below the base.

6. The integrated device for milling and welding arc-shaped longitudinal seams of a tank bottom according to claim 5, characterized in that: The clamping structure includes a load-bearing seat, which is arc-shaped. One end of the load-bearing seat is hinged to the turntable, and the other end of the load-bearing seat is provided with a hook mechanism that is detachably matched with the hook shaft. A key clamping mechanism is provided on one side of the load-bearing seat, and the key clamping mechanism can press the welded melon petal plate onto the melon petal plate support body.

7. The integrated device for milling and welding an arc-shaped longitudinal seam of a tank bottom according to claim 6, characterized in that: The hook mechanism includes a hook and a cylinder assembly. The hook is U-shaped. The open end of the hook is hinged to the force-bearing seat through a hinge shaft. A through groove that matches the hook shaft is formed inside the hook. A crank arm is provided at one end of the hinge shaft. The shell end of the cylinder assembly is hinged to the force-bearing seat, and the telescopic end of the cylinder assembly is hinged to the crank arm.

8. The integrated device for milling and welding an arc-shaped longitudinal seam of a tank bottom according to claim 6, characterized in that: The key pressing mechanism includes an air bag, multiple key pressure plates and a key pressure plate seat. The air bag is arranged in the air bag groove on the force-bearing seat, the key pressure plate is arranged below the air bag, the key pressure plate is movably arranged in the key pressure plate seat, the key pressure plate seat is connected to the force-bearing seat, and a reset spring is arranged between the key pressure plate and the key pressure plate seat.

9. The integrated device for milling and welding an arc-shaped longitudinal seam of a tank bottom according to claim 8, characterized in that: Two of the key pressing mechanisms are provided on each of the force-bearing seats, and the two key pressing mechanisms can press two adjacent melon-shaped plates.

10. The integrated device for milling and welding arc-shaped longitudinal seams of a tank bottom according to claim 5, characterized in that: The turntable is provided with a rotary drive structure, and the rotary drive structure can drive the turntable to rotate.

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