A reactor pressure vessel assembly machining auxiliary tool

Abstract

The utility model relates to a kind of reaction vessel assembly processing auxiliary tool of reactor pressure, belong to reactor pressure vessel production technical field, and reaction vessel assembly of reactor pressure includes cylinder and the protruding block being set on the inner wall of cylinder, the tool includes conical surface ring, for with the bottom inner wall of cylinder is attached to provide support force;Mounting bracket, detachably connected on conical surface ring, mounting bracket and conical surface ring constitute base;Support frame, it is installed on mounting bracket by lifting mechanism liftingly;Round plate, detachably connected on support frame, round plate and support frame constitute the placement table for placing machine tool, and round plate also detachably install the positioning frame adapted to protruding block, wherein, positioning frame is used to position protruding block, machine tool is used to process protruding block. Through the above structure, the auxiliary tool can be more easily transported into the cylinder of reactor pressure vessel assembly, and the installation position of each component can be more flexibly adjusted in the cylinder.

Description

Technical Field

[0001] This utility model belongs to the field of reactor pressure vessel manufacturing technology, and specifically relates to an auxiliary tooling for processing reactor pressure vessel components. Background Technology

[0002] Existing reactor pressure vessel assemblies include a cylindrical body and core support blocks disposed on the circumferential inner wall of the cylindrical body. During production, small machine tools (such as a mobile boring machine, model XK766) are required to machine the core support blocks to ensure they meet design requirements. To ensure the machine tool can be stably placed inside the reactor pressure vessel, a machining platform is typically hoisted into the reactor pressure vessel and installed before machining, and then the machine tool is mounted on the machining platform. This machining platform is also known as an auxiliary tooling for machining reactor pressure vessel assemblies.

[0003] Currently, the processing platform used includes a base, a placement platform, and a lifting mechanism that mounts the placement platform onto the base. The base primarily serves to provide support by fitting against the inner wall of the reactor pressure vessel, while the placement platform is used to place the machine tool. However, the base and placement platform of the aforementioned processing platform are formed as a single unit by welding the various components together. This makes them very heavy, inconvenient to transport, and difficult to adjust their installation position after being hoisted into the reactor pressure vessel. Utility Model Content

[0004] This utility model provides an auxiliary tooling for processing reactor pressure vessel components, which solves the technical problem that such processing platforms in the prior art are not convenient to be hoisted into the reactor pressure vessel.

[0005] This utility model is achieved through the following technical solution: an auxiliary tooling for processing a reactor pressure vessel assembly, the reactor pressure vessel assembly including a cylinder and protrusions disposed on the inner wall of the cylinder, comprising:

[0006] A conical ring is used to fit against the bottom inner wall of the cylinder to provide support.

[0007] The mounting bracket is detachably connected to the conical ring, and the mounting bracket and the conical ring together form a base;

[0008] The support frame is mounted on the mounting frame via a lifting mechanism;

[0009] A circular plate is detachably connected to the support frame. The circular plate and the support frame form a platform for placing a machine tool. A positioning frame adapted to the protrusion is also detachably installed on the circular plate. The positioning frame is used to position the protrusion, and the machine tool is used to process the protrusion.

[0010] Furthermore, to better realize this utility model, the mounting bracket includes an outer ring, an inner ring, and a connecting plate with a mounting plate on its top surface. The outer ring is sleeved outside the inner ring and is coaxially arranged with the inner ring. The connecting plate is welded between the outer ring and the inner ring. The mounting plate is fixed to the top of the outer ring and the top of the inner ring. There are multiple connecting plates, which are evenly distributed around the inner ring.

[0011] The conical ring has a large-diameter end and a small-diameter end. The large-diameter end is bolted to the bottom end of the outer ring, and the small-diameter end is bolted to the bottom end of the inner ring. The bottom end of the connecting plate is fitted with the inner wall of the conical ring.

[0012] Furthermore, in order to better realize this utility model, a fixing block is welded to the bottom of the inner ring wall of both the outer ring and the inner ring;

[0013] The inner walls of both the large-diameter end and the small-diameter end of the conical ring are welded with protruding plates.

[0014] The fixing block on the outer ring is bolted and fixed to the protruding plate on the large diameter end;

[0015] The fixing block on the inner ring is bolted to the convex plate on the small diameter end.

[0016] Furthermore, in order to better realize this utility model, the lifting mechanism is a hydraulic cylinder with the telescopic shaft facing upward, and each of the mounting plates is equipped with a hydraulic cylinder, and the telescopic shafts of all the hydraulic cylinders are connected to the support frame.

[0017] Furthermore, to better realize this utility model, the support frame includes:

[0018] Multiple triangular closed-loop frames are bolted together, and a joint is formed at the junction of two adjacent closed-loop frames. The top end of the telescopic shaft of the hydraulic cylinder is connected to the joint.

[0019] The circular plate is bolted to each of the closed-loop frames.

[0020] Furthermore, in order to better realize this utility model, the closed-loop frame includes a top annular plate, a bottom annular plate, and a triangular ring. The triangular ring is welded and fixed between the bottom surface of the top annular plate and the top surface of the bottom annular plate. A stiffening plate that is connected to both the top annular plate and the bottom annular plate is also welded inside the triangular ring. A supporting cylinder located inside the triangular ring is also welded between the top annular plate and the bottom annular plate.

[0021] The circular plate overlaps the top surface of the closed-loop frame, and the bolts connecting the circular plate and the closed-loop frame pass through the circular plate, the top annular plate, the supporting cylinder and the bottom annular plate in sequence before being screwed into the nut.

[0022] The telescopic shaft of the hydraulic cylinder is connected to the bottom annular plate.

[0023] Furthermore, in order to better realize this utility model, the number of closed-loop frames is four, and the four closed-loop frames are spliced ​​together to form a rectangular frame, and the triangular rings of two adjacent closed-loop frames are fixed by bolts.

[0024] Furthermore, to better realize this utility model, the positioning frame includes:

[0025] A portal frame, wherein a support leg is welded to the bottom end of the portal frame, and the support leg is bolted and fixed to the circular plate;

[0026] A baffle is provided on the lower inner wall of the gate frame, the baffle is inserted into the slot, and the baffle and the gate frame form a loop frame that is adapted to the protrusion, wherein the loop frame is used to position the protrusion.

[0027] Furthermore, in order to better realize this utility model, a set screw is also attached to the door frame, the set screw being used to press the protrusion tightly inside the door frame.

[0028] Furthermore, in order to better realize this utility model, a circular through hole is provided in the middle of the circular plate, and the circular plate also includes a plate assembly bolted and fixed thereon, the plate assembly being used for positioning and mounting the machine tool.

[0029] Compared with the prior art, this utility model has the following advantages:

[0030] The auxiliary tooling for processing reactor pressure vessel components provided by this utility model includes a conical ring, a mounting frame, a support frame, and a circular plate. The reactor pressure vessel component includes a cylindrical body and protrusions disposed on the inner wall of the cylindrical body. The conical ring is used to fit against the bottom inner wall of the cylindrical body. The mounting frame is detachably connected to the conical ring, forming a base with the conical ring. The support frame is vertically mounted on the mounting frame via a lifting mechanism, thereby adjusting the mounting height of the support frame on the mounting frame. The circular plate is detachably connected to the support frame, forming a platform for placing a machine tool. A positioning frame adapted to the protrusions is also detachably mounted on the circular plate, whereby the positioning frame is used to position the protrusions, and the machine tool is used to process the protrusions. In actual use, the machine tool is mounted on the circular plate.

[0031] The aforementioned reactor pressure vessel assembly machining auxiliary tooling allows for the sequential hoisting of various components into the reactor pressure vessel assembly's cylinder, followed by assembly within the cylinder to form a support platform for mounting machine tools. Specifically, a conical ring is first hoisted into the cylinder, ensuring its outer conical surface aligns with the inner bottom wall of the cylinder. A mounting frame is then hoisted into the cylinder and installed on the conical ring, forming a base that rests against the inner wall of the cylinder, providing support for the entire tooling. Next, a lifting mechanism is hoisted into the cylinder and installed on the mounting frame. A support frame is then hoisted into the cylinder and installed on the lifting mechanism. Finally, a circular plate is hoisted into the cylinder and installed on the support frame. The support structure forms a platform for placing the machine tool. Finally, the positioning frame is hoisted into the cylinder and then connected to the circular plate, so that the protrusion to be processed is accommodated in the positioning frame. That is, the positioning frame is used to position the protrusion. Of course, if the protrusion cannot enter the positioning frame smoothly, the relative positions of each component can be adjusted by hoisting equipment, or the height of the circular plate relative to the conical ring can be adjusted by lifting mechanism, so that the protrusion can enter the positioning frame smoothly. Then, the machine tool is hoisted into the cylinder and the machine tool (such as a mobile boring machine) is installed on the circular plate. The machine tool is used to process the protrusion on the inner wall of the cylinder.

[0032] With the above structure, the auxiliary tooling for processing reactor pressure vessel components provided by this utility model can be transported into the cylinder of the reactor pressure vessel component more easily. The weight of each hoisting is lighter than that of related technologies, so the installation position of each component can be adjusted more flexibly in the cylinder, making it easier to assemble and disassemble the auxiliary tooling in the cylinder. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the auxiliary tooling for processing reactor pressure vessel components provided in this embodiment of the utility model;

[0035] Figure 2 yes Figure 1 Another perspective view of the tooling shown;

[0036] Figure 3This is a schematic diagram of the placement platform for the auxiliary tooling used in the processing of reactor pressure vessel components provided in this embodiment of the present invention;

[0037] Figure 4 yes Figure 3 A magnified view of region A in the diagram;

[0038] Figure 5 yes Figure 3 Another perspective view of the structure shown;

[0039] Figure 6 This is a schematic diagram of the support frame provided in an embodiment of the present utility model;

[0040] Figure 7 This is a schematic diagram of the closed-loop frame in an embodiment of the present invention;

[0041] Figure 8 This is a schematic diagram of the base of the auxiliary tooling for processing reactor pressure vessel components provided in this embodiment of the present invention;

[0042] Figure 9 This is a schematic diagram of the mounting bracket provided in an embodiment of the present utility model;

[0043] Figure 10 yes Figure 9 Another view of the mounting bracket shown;

[0044] Figure 11 yes Figure 10 The diagram shown illustrates the structure of the mounting bracket without the inner ring assembled.

[0045] Figure 12 yes Figure 10 The diagram shown illustrates the structure of the mounting bracket without the outer ring assembled.

[0046] Figure 13 This is a schematic diagram of the conical ring structure in an embodiment of this utility model;

[0047] Figure 14 This is a schematic diagram of the installation structure of the reactor pressure vessel assembly processing auxiliary tooling provided in this embodiment of the invention within the cylinder.

[0048] In the picture:

[0049] 100-Cylinder body, 110-Protrusion, 200-Conical ring, 210-Protruding plate, 300-Mounting bracket, 310-Outer ring, 320-Inner ring, 330-Connecting plate, 340-Mounting plate, 350-Fixing block, 400-Support frame, 410-Closed-loop frame, 411-Top annular plate, 412-Bottom annular plate, 413-Triangular ring, 414-Rib plate, 415-Support cylinder, 500-Hydraulic cylinder, 600-Circular plate, 610-Circular through hole, 620-Plate assembly, 700-Positioning frame, 710-Gate frame, 720-Outrigger, 730-Baffle, 740-Setting screw. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0051] Example:

[0052] like Figures 1-14 As shown, the auxiliary tooling for machining reactor pressure vessel assemblies provided in this embodiment is a machining platform installed inside the cylinder 100 of the reactor pressure vessel assembly and used to mount a machine tool (e.g., a mobile boring machine of model XK766). This machine tool (not shown in the figure) is suitable for machining the protrusions 110 on the inner wall of the cylinder 100. The auxiliary tooling includes a conical ring 200, a mounting frame 300, a support frame 400, and a circular plate 600. The aforementioned reactor pressure vessel assembly includes a cylinder 100 and protrusions 110 disposed on the inner wall of the cylinder 100, wherein:

[0053] The aforementioned conical ring 200 is used to fit against the bottom inner wall of the cylinder 100. It should be noted that the inner diameter of the cylinder 100 is approximately 4 meters, and the lower part of the cylinder 100 has a spherical structure. The outer conical surface of the aforementioned conical ring 200 can fit perfectly against the inner wall of the aforementioned spherical structure.

[0054] The aforementioned mounting bracket 300 is detachably connected to the conical ring 200, and the mounting bracket 300 and the conical ring 200 together form a base. That is, the mounting bracket 300 can be mounted on the conical ring 200 to form a base, or it can be removed from the ring for easy handling.

[0055] The support frame 400 is mounted on the mounting frame 300 by means of a lifting mechanism, thereby using the lifting mechanism to adjust the installation height of the support frame 400 on the mounting frame 300.

[0056] The circular plate 600 is detachably connected to the support frame 400. The circular plate 600 and the support frame 400 together form a platform for placing the machine tool. A positioning frame 700 adapted to the protrusion 110 is also detachably mounted on the circular plate 600. The positioning frame 700 is used to position the protrusion 110, and the machine tool is used to process the protrusion 110. In actual use, the machine tool is mounted on the circular plate 600.

[0057] The reactor pressure vessel assembly processing auxiliary tooling with the above structure can sequentially hoist each component into the cylinder 100 of the reactor pressure vessel assembly, and then assemble them inside the cylinder 100 to form a support platform for installing machine tools inside the cylinder 100. Specifically, first, the conical ring 200 is hoisted into the cylinder 100, so that the outer conical surface of the conical ring 200 fits against the inner wall of the bottom of the cylinder 100. Then, the mounting bracket 300 is hoisted into the cylinder 100 and installed on the conical ring 200. At this point, the mounting bracket 300 and the conical ring 200 form a base, which rests on the inner wall of the cylinder 100, thus providing support for the entire tooling. Next, the lifting mechanism is hoisted into the cylinder 100 and installed on the mounting bracket 300. Then, the support bracket 400 is hoisted into the cylinder 100 and installed on the lifting mechanism. Finally, the circular plate 600 is hoisted into the cylinder 100 and installed on the support bracket 400. The support frame 400 and the support frame 600 constitute a platform for placing the machine tool. Finally, the positioning frame 700 is hoisted into the cylinder 100 and then connected to the circular plate 600, so that the protrusion 110 to be processed is accommodated in the positioning frame 700. That is, the positioning frame 700 is used to position the protrusion 110. Of course, if the protrusion 110 cannot enter the positioning frame 700 smoothly, the relative positions of the components can be adjusted by the hoisting equipment, or the height of the circular plate 600 relative to the conical ring 200 can be adjusted by the lifting mechanism, so that the protrusion 110 can enter the positioning frame 700 smoothly. Then, the machine tool is hoisted into the cylinder 100 and the machine tool (e.g., a mobile boring machine) is installed on the circular plate 600. The machine tool is used to process the protrusion 110 on the inner wall of the cylinder 100.

[0058] With the above structure, the auxiliary tooling for processing reactor pressure vessel components provided in this embodiment can be more easily transported into the cylinder 100 of the reactor pressure vessel assembly. The weight of each lift is lighter compared to related technologies, allowing for more flexible adjustment of the installation positions of various components within the cylinder 100. This makes the auxiliary tooling easier to assemble and disassemble within the cylinder 100. It is worth noting that the base and platform of such auxiliary tooling in related technologies are very heavy and cannot be disassembled. Therefore, when assembling and disassembling them within the cylinder 100, it is not only inconvenient to adjust the installation position, but also requires a higher lifting load from the hoisting equipment. The auxiliary tooling provided in this embodiment breaks down existing tooling into smaller parts, resulting in a lighter weight for each lift. The lifting mechanism also facilitates adjustment of the processing height.

[0059] Both the conical ring 200 and the circular plate 600 mentioned above can be structural components made of steel plates.

[0060] An optional implementation of this embodiment is as follows: The mounting bracket 300 includes an outer ring 310, an inner ring 320, and a connecting plate 330 with a mounting plate 340 on its top surface. The outer ring 310, inner ring 320, connecting plate 330, and mounting plate 340 can all be structural components made of steel plates.

[0061] The outer ring 310 is fitted over the inner ring 320 and is coaxial with the inner ring 320. The connecting plate 330 is welded between the outer ring 310 and the inner ring 320, thereby connecting the inner ring 320 and the outer ring 310 into a whole. Specifically, one end of the connecting plate 330 is welded and fixed to the inner ring wall of the outer ring 310, and the other end of the connecting plate 330 is welded and fixed to the outer ring wall of the inner ring 320. The mounting plate 340 overlaps the top of the outer ring 310 and the top of the inner ring 320, and the mounting plate 340 is welded and fixed to both the inner ring 320 and the outer ring 310. There are multiple connecting plates 330, which are evenly distributed around the inner ring 320. Optionally, the number of connecting plates 330 can be three, four, or five, and thus the mounting plates 340 on the base can be three, four, or five respectively. This embodiment uses four connecting plates 330 as an example for explanation.

[0062] The conical ring 200 has a large-diameter end and a small-diameter end. The large-diameter end is bolted to the bottom end of the outer ring 310, and the small-diameter end is bolted to the bottom end of the inner ring 320. The bottom end of the connecting plate 330 is fitted against the inner wall of the conical ring 200. In the height direction, the bottom end of the small-diameter end is lower than the bottom end of the large-diameter end, and the bottom end of the connecting plate 330 gradually extends downward from the large-diameter end to the small-diameter end.

[0063] The mounting frame 300 of this structure has a hollow interior, making it lighter. The reinforcing effect of the connecting plate 330 and the mounting plate 340 gives the entire mounting frame 300 sufficient strength to support the various components on it. Of course, the aforementioned mounting frame 300 can also be, for example, a scaffold formed by connecting steel pipes.

[0064] Optionally, fixing blocks 350 are welded to the bottom of the inner ring walls of both the outer ring 310 and the inner ring 320, and protruding plates 210 are welded to the inner walls of both the large-diameter and small-diameter ends of the conical ring 200. The fixing blocks 350 on the outer ring 310 are bolted to the protruding plates 210 on the large-diameter end, and the fixing blocks 350 on the inner ring 320 are bolted to the protruding plates 210 on the small-diameter end, thereby achieving detachable installation between the conical ring 200 and the mounting bracket 300. Of course, the outer ring 310 and the large-diameter end of the conical ring 200 can also be fixed by snap-fit, and the inner ring 320 and the small-diameter end of the conical ring 200 can also be fixed by snap-fit.

[0065] An optional implementation of this embodiment is as follows: The lifting mechanism is a hydraulic cylinder 500 with its telescopic shaft facing upwards. One hydraulic cylinder 500 is installed on each of the mounting plates 340. The telescopic shafts of all hydraulic cylinders 500 are connected to the support frame 400, thereby using multiple hydraulic cylinders 500 to synchronously drive the support frame 400 to rise and fall relative to the mounting frame 300. Of course, the lifting mechanism can also be a mechanical jack or a pneumatic cylinder, as long as it can output linear movement in the vertical direction. This lifting mechanism has a simple structure, is lightweight, and is easy to transport and disassemble.

[0066] An optional implementation of this embodiment is as follows: The support frame 400 includes multiple triangular closed-loop frames 410, which are bolted together. A joint is formed where adjacent closed-loop frames 410 meet, and the top end of the telescopic shaft of the hydraulic cylinder 500 is connected to the joint. A circular plate 600 is bolted to each closed-loop frame 410. The triangular closed-loop frames 410 have high structural strength, and the support frame 400 composed of multiple closed-loop frames 410 also has sufficiently high structural strength. More importantly, the closed-loop frames 410 are lightweight, thus making the support frame 400 lighter. It should be noted that the support frame 400 formed by splicing multiple closed-loop frames 410 has a planar structure.

[0067] Of course, the aforementioned support frame 400 can also be a scaffold formed by connecting steel pipes.

[0068] Specifically, the closed-loop frame 410 mentioned above includes a top annular plate 411, a bottom annular plate 412, and a triangular ring 413. Both the top annular plate 411 and the bottom annular plate 412 are triangular in shape. The top annular plate 411 is stacked on top of the bottom annular plate 412. The triangular ring 413 is welded and fixed between the bottom surface of the top annular plate 411 and the top surface of the bottom annular plate 412. A stiffening plate 414 connected to both the top annular plate 411 and the bottom annular plate 412 is also welded inside the triangular ring 413. A supporting cylinder 415 located inside the triangular ring 413 is also welded between the top annular plate 411 and the bottom annular plate 412.

[0069] Optionally, the aforementioned top annular plate 411, bottom annular plate 412, and triangular ring 413 are all structural components made of steel plates. The aforementioned stiffening plate 414 can also be bolted to the aforementioned triangular ring 413. The provision of the supporting column 415 can further enhance the structural strength of the closed-loop frame 410, and the supporting column 415 can also be placed directly on the bottom annular plate 412 without being welded to the top annular plate 411 and the bottom annular plate 412.

[0070] The circular plate 600 overlaps the top surface of the closed-loop frame 410 (i.e., the top annular plate 411). Bolts connecting the circular plate 600 and the closed-loop frame 410 pass sequentially through the circular plate 600, the top annular plate 411, the supporting cylinder 415, and the bottom annular plate 412 before being screwed onto the bolts, thus achieving a detachable connection between the circular plate 600 and the support frame 400. Alternatively, the circular plate 600 can be locked to the top annular plate 411 using a locking pin. The telescopic shaft of the hydraulic cylinder 500 is connected to the bottom annular plate 412.

[0071] The above structure makes the support frame 400 heavier and stronger, thus facilitating handling. Furthermore, the appropriate number of closed-loop frames 410 can be selected to assemble the support frame 400 according to actual needs, such as three, four, or five. In this embodiment, four closed-loop frames 410 are used to assemble the support frame 400. Specifically, the four closed-loop frames 410 are spliced ​​to form a rectangular frame, and the triangular rings 413 of adjacent closed-loop frames 410 are fixed together by bolts, thus forming four joints. Since there are four connecting plates 330, there are also four mounting plates 340. Correspondingly, there are also four hydraulic cylinders 500, which are connected to the four joints respectively.

[0072] The support frame 400 is formed by connecting multiple closed-loop frames 410. Obviously, the weight of a single closed-loop frame 410 is lighter than that of the entire support frame 400. In actual installation, all closed-loop frames 410 can be hoisted into the cylinder 100 before installation.

[0073] An optional implementation of this embodiment is as follows: The positioning frame 700 includes a portal frame 710 and a baffle 730, both of which can be structural components made of steel. Wherein:

[0074] The bottom end of the aforementioned portal frame 710 is welded with a support leg 720, which is bolted to the circular plate 600, thereby enabling the detachable installation of the positioning frame 700 on the circular plate 600. Alternatively, the support leg 720 can be locked to the circular plate 600 using a locking pin. A slot is provided on the lower inner wall of the portal frame 710, into which a baffle 730 is inserted. The baffle 730 and the portal frame 710 form a U-shaped frame that matches the protrusion 110, whereby the U-shaped frame is used to position the protrusion 110. In practical use, the baffle 730 can be removed first. Only when the hydraulic cylinder 500 drives the placement platform (i.e., the support frame 400 and the circular plate 600) to move the portal frame downwards, causing the distance between the protrusion 110 and the top of the portal frame to reach a suitable value, can the baffle 730 be installed.

[0075] A set screw 740 is also bolted to the portal frame 710. The set screw 740 is used to press the protrusion 110 into the portal frame 710, thereby firmly connecting the positioning frame 700 and the aforementioned protrusion 110 together. In this way, not only is the entire auxiliary tooling doubly fixed within the cylinder 100 (first, the fixing between the positioning frame and the protrusion 110, and second, the contact between the conical ring 200 and the bottom inner wall of the cylinder 100), thus making the auxiliary tooling more securely installed within the cylinder 100, but also, when machining the protrusion 110, the machine tool mounted on the circular plate 600 is more fixed in position relative to the protrusion 110.

[0076] Optionally, a through hole 610 is provided in the middle of the circular plate 600, and the circular plate 600 also includes a plate assembly 620 bolted to it. The plate assembly 620 is used for positioning and mounting a machine tool (e.g., a mobile boring machine of model XK766). Specifically, the through hole 610 can provide initial positioning of the machine tool, while the plate assembly 620 can provide more precise positioning. Of course, it is worth noting that the positioning method of the machine tool on the circular plate 600 is the same as that of the machine tool on existing related tooling, so it will not be described in detail here.

[0077] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope described in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An auxiliary tooling for processing a reactor pressure vessel assembly, the reactor pressure vessel assembly comprising a cylindrical body (100) and protrusions (110) disposed on the inner wall of the cylindrical body (100), characterized in that, include: A conical ring (200) is used to fit against the bottom inner wall of the cylinder (100); A mounting bracket (300) is detachably connected to the conical ring (200), the mounting bracket (300) and the conical ring (200) forming a base; The support frame (400) is mounted on the mounting frame (300) in a lifting manner via a lifting mechanism; A circular plate (600) is detachably connected to the support frame (400). The circular plate (600) and the support frame (400) constitute a platform for placing a machine tool. A positioning frame (700) adapted to the protrusion (110) is also detachably installed on the circular plate (600). The positioning frame (700) is used to position the protrusion (110), and the machine tool is used to process the protrusion (110).

2. The auxiliary tooling for processing reactor pressure vessel components according to claim 1, characterized in that: The mounting bracket (300) includes an outer ring (310), an inner ring (320), and a connecting plate (330) with a mounting plate (340) on its top surface. The outer ring (310) is sleeved on the outer ring (320), and the outer ring (310) and the inner ring (320) are coaxially arranged. The connecting plate (330) is welded between the outer ring (310) and the inner ring (320). The mounting plate (340) is fixed to the top of the outer ring (310) and the top of the inner ring (320). There are multiple connecting plates (330), and the multiple connecting plates (330) are evenly distributed around the inner ring (320). The conical ring (200) has a large diameter end and a small diameter end. The large diameter end is bolted to the bottom end of the outer ring (310), and the small diameter end is bolted to the bottom end of the inner ring (320). The bottom end of the connecting plate (330) is in contact with the inner wall of the conical ring (200).

3. The auxiliary tooling for processing reactor pressure vessel components according to claim 2, characterized in that: The bottom of the inner ring wall of both the outer ring (310) and the inner ring (320) is welded with a fixing block (350); The inner walls of both the large-diameter end and the small-diameter end of the conical ring (200) are welded with protruding plates (210); The fixing block (350) on the outer ring (310) is bolted and fixed to the protruding plate (210) on the large diameter end; The fixing block (350) on the inner ring (320) is bolted to the protruding plate (210) on the small diameter end.

4. The auxiliary tooling for processing reactor pressure vessel components according to claim 2, characterized in that: The lifting mechanism is a hydraulic cylinder (500) with its telescopic shaft facing upward. Each mounting plate (340) is equipped with a hydraulic cylinder (500), and the telescopic shafts of all the hydraulic cylinders (500) are connected to the support frame (400).

5. The auxiliary tooling for processing reactor pressure vessel components according to claim 4, characterized in that, The support frame (400) includes: Multiple triangular closed-loop frames (410) are bolted together, and a joint is formed at the junction of two adjacent closed-loop frames (410). The top end of the telescopic shaft of the hydraulic cylinder (500) is connected to the joint. The circular plate (600) is bolted to each of the closed-loop frames (410).

6. The auxiliary tooling for processing reactor pressure vessel components according to claim 5, characterized in that: The closed-loop frame (410) includes a top annular plate (411), a bottom annular plate (412), and a triangular ring (413). The triangular ring (413) is welded and fixed between the bottom surface of the top annular plate (411) and the top surface of the bottom annular plate (412). A stiffening plate (414) connected to both the top annular plate (411) and the bottom annular plate (412) is also welded inside the triangular ring (413). A supporting cylinder (415) located inside the triangular ring (413) is also welded between the top annular plate (411) and the bottom annular plate (412). The circular plate (600) overlaps the top surface of the closed-loop frame (410), and the bolts connecting the circular plate (600) and the closed-loop frame (410) pass through the circular plate (600), the top annular plate (411), the supporting cylinder (415) and the bottom annular plate (412) in sequence before being screwed to the nuts. The telescopic shaft of the hydraulic cylinder (500) is connected to the bottom annular plate (412).

7. The auxiliary tooling for processing reactor pressure vessel components according to claim 6, characterized in that: The number of closed-loop frames (410) is four, and the four closed-loop frames (410) are spliced ​​together to form a rectangular frame. The triangular rings (413) of two adjacent closed-loop frames (410) are fixed by bolts.

8. The auxiliary tooling for processing reactor pressure vessel assemblies according to any one of claims 1-7, characterized in that, The positioning frame (700) includes: A portal frame (710) is provided, with a support leg (720) welded to the bottom end of the portal frame (710), and the support leg (720) is bolted and fixed to the circular plate (600); A baffle (730) is provided on the lower inner wall of the gate frame (710), the baffle (730) is inserted into the slot, and the baffle (730) and the gate frame (710) form a loop frame that is adapted to the protrusion (110), wherein the loop frame is used to position the protrusion (110).

9. The auxiliary tooling for processing reactor pressure vessel components according to claim 8, characterized in that: A set screw (740) is also attached to the portal frame (710), the set screw (740) being used to press the protrusion (110) against the portal frame (710).

10. The auxiliary tooling for processing reactor pressure vessel assemblies according to any one of claims 1-7, characterized in that: The circular plate (600) has a through hole (610) in the middle, and the circular plate (600) also includes a plate assembly (620) bolted to it, which is used for positioning and mounting the machine tool.

Images