Stainless steel flange forging clamp for nuclear power

Abstract

The invention discloses a stainless steel flange forging clamp for nuclear power, and belongs to the technical field of stainless steel flange forging.The stainless steel flange forging clamp for nuclear power comprises a supporting frame, a turnover assembly is fixedly connected to the top of the supporting frame and used for cleaning the front face and the back face of a flange, and a clamping mechanism is arranged in the turnover assembly; and a cleaning mechanism is arranged between the supporting frame and the turning-over assembly and used for cleaning different surface conditions of the flange. By adopting the cleaning mechanism and the turn-over assembly, casting slag on the outer surface of the flange can be thoroughly cleaned within a short time, the production efficiency is improved, the process period is shortened, and the downtime is shortened.

Description

Technical Field

[0001] The present invention belongs to the technical field of stainless steel flange forging, and particularly relates to a forging fixture for stainless steel flanges used in nuclear power plants. Background Art

[0002] Nuclear power plants have extremely strict requirements for equipment, especially in terms of structure and materials. Stainless steel flanges are used in nuclear power systems and usually bear high-pressure and high-temperature working environments, especially in the pipe systems of reactors. Forging fixtures can ensure the precision and strength of flanges, avoiding equipment failures or accidents caused by material defects or poor assembly. Using special forging fixtures can ensure that stainless steel flanges maintain high precision during the production process, reduce errors, and improve processing efficiency. Through precise forging processes, the surface quality and dimensional control of flanges can be guaranteed, thereby improving the assembly accuracy and product reliability.

[0003] After the forging and forming of stainless steel flanges used in nuclear power plants, it is necessary to manually clean the casting slag generated during the casting process. This means additional labor costs, and the cleaning workload will increase with the increase in the casting volume, affecting the overall production efficiency. Moreover, cleaning the casting slag usually takes a considerable amount of time, especially for workpieces with complex shapes like flanges, and the cleaning process is rather cumbersome. At the same time, in large-scale production, manual cleaning will lead to a reduction in production efficiency and an increase in cycle time, thus affecting the overall production schedule. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above-mentioned disadvantages of the prior art and provide a forging fixture for stainless steel flanges used in nuclear power plants.

[0005] The technical solution adopted to solve the above technical problem is: a forging fixture for stainless steel flanges used in nuclear power plants, including a support frame. A turning-over assembly is fixedly connected to the top of the support frame for cleaning the front and back sides of the flange. A clamping mechanism is arranged inside the turning-over assembly for clamping and rotating the flange. A cleaning mechanism is arranged between the support frame and the turning-over assembly for cleaning different surface conditions of the flange.

[0006] Through the above technical solution, not only the cleaning efficiency and quality are improved, but also the mechanical strength, sealing performance, and corrosion resistance of the flange are enhanced. Automated cleaning can reduce human errors and improve the operation stability and safety of the equipment.

[0007] Further, the turning-over assembly includes two first support plates and two second support plates fixedly connected to the support frame. The top of the first support plate is provided with a notch. A frame is movably connected at the notches at the tops of the two first support plates. The connecting shafts on both sides of the frame are located at the notches at the tops of the first support plates. Second turning plates are rotatably connected to both sides of the frame, and the other ends of the second turning plates are rotatably connected to the outer wall of the support frame. An armrest rod is rotatably connected between the two second support plates, and one end of the armrest rod is rotatably connected to the connecting shaft of the frame located at the notch at the top of the first support plate. The clamping mechanism is located inside the frame.

[0008] Through the above technical solution, manual turning over enables the staff to accurately control the turning angle according to needs, so that the flange can be precisely processed during the cleaning process of each side, ensuring the cleaning effect on both sides of the flange, improving the cleaning accuracy, surface quality and production efficiency, and at the same time reducing equipment investment and operation risks.

[0009] Further, the clamping mechanism includes two H-shaped sliding frames that are limited and slidably connected to the inner wall of the frame. One of the H-shaped sliding frames is arranged in a T-shaped structure. Limiting wheels are rotatably connected inside both ends of the H-shaped sliding frame. A number of hydraulic rods are installed inside the frame, and the hydraulic rods are arranged in a mirror image between two by two. The telescopic ends of the two hydraulic rods are fixedly connected to the outer wall of the H-shaped sliding frame. A first motor is installed inside the H-shaped sliding frame arranged in a T-shaped structure. The output end of the first motor is fixedly connected to a chain assembly. The three sprockets inside the chain assembly are arranged in a triangular structure. At the same time, the output end of the first motor is fixedly connected to one of the sprockets of the chain assembly. The other two sprockets inside the chain assembly are welded to the limiting wheels.

[0010] Through the above technical solution, through the mechanized friction cleaning method, the removal speed of casting slag is faster than manual cleaning. During the self-rotation process of the flange under the friction of the limiting wheels, the cleaning can be completed in a shorter time, reducing the manual labor intensity, and at the same time avoiding the possible errors and missed cleaning situations during manual cleaning.

[0011] Further, the cleaning mechanism includes two adjusting plates arranged in a mirror image. The tops of the two adjusting plates are rotatably connected to a moving frame. Both ends of the moving frame are slidably connected through the top of the support frame. A number of steel brushes are linearly and equally spaced on the top of the moving frame. An arc-shaped groove is formed through one side of the middle of the adjusting plate, and a first turning plate is arranged in the arc-shaped groove. At the same time, one end of the first turning plate is slidably connected to the adjusting plate inside the arc-shaped groove. The other end of the first turning plate is rotatably connected to the inner wall of the support frame. The inside of the first turning plate is in a hollow state, and a chute is formed through the side of the first turning plate away from the arc-shaped groove.

[0012] Through the above technical solution, by adopting this adjustable cleaning mechanism, the dependence on manual operation is reduced, and the risk of manual misoperation is reduced. The design of adjustable frequency also enables the equipment to adapt to the cleaning requirements of flanges with different sizes and shapes, thereby reducing the skill requirements for staff and reducing human errors.

[0013] Furthermore, a slider is arranged in the chute, and the slider is slidably connected to the first rotating plate. At the same time, both ends of the slider limit the first rotating plate. A threaded rod passes through the middle of the slider, and both ends of the threaded rod are rotatably connected to the support frame. The bottom end of the adjusting plate is rotatably connected to a connecting plate, and the other end of the connecting plate is rotatably connected to a circular plate. At the same time, the connecting plate is rotatably connected to the eccentric part of the circular plate, and the circular plate is rotatably connected to the inner wall of the support frame.

[0014] Through the above technical solution, the cleaning process is continuous and repetitive. By adjusting the frequency and reciprocating amplitude, high-quality cleaning work can be completed in a short time, thereby improving the overall production efficiency.

[0015] Furthermore, a second synchronous belt assembly is arranged at the bottom of the threaded rod. The through ends of the two synchronous wheels in the second synchronous belt assembly are rotatably connected to the support frame through holes. The through end of the connecting shaft of the synchronous wheel in the second synchronous belt assembly is fixedly connected to the threaded rod. At the same time, a third motor is arranged at the top of one of the threaded rods. The third motor is fixedly installed on the support frame, and the output end of the third motor is rotatably connected to the support frame through a hole. At the same time, the output end of the third motor is fixedly connected to the threaded rod.

[0016] Through the above technical solution, not only can the surface impurities of the flange be cleaned, but also the tiny defects or unevenness on the surface can be effectively eliminated, thereby improving the machining accuracy of the flange, which has an important impact on the subsequent processing steps of the flange (such as welding, heat treatment, assembly, etc.) and can ensure the smooth progress of the subsequent processes.

[0017] Furthermore, a first synchronous belt assembly is rotatably connected to both sides of the support frame. The synchronous wheels in the first synchronous belt assembly are rotatably connected to the outer wall of the support frame. The through end of the connecting shaft of one of the synchronous wheels in the first synchronous belt assembly is rotatably connected to the support frame through a hole. At the same time, the through end of the connecting shaft of one of the synchronous wheels in the first synchronous belt assembly is fixedly connected to the circular plate. A connecting rod is arranged inside the support frame. Both ends of the connecting rod are rotatably connected to the support frame through holes, and the through end of the connecting rod is fixedly connected to the other synchronous wheel in the first synchronous belt assembly.

[0018] Furthermore, a second motor is installed on one side of the support frame, and the output end of the second motor is rotatably connected to the support frame through a hole. At the same time, the through end of the second motor is fixedly connected to a driving gear. One side of the driving gear is in transmission connection with a driven gear. The connecting rod is fixedly connected to the driven gear through a hole. An inclined slide plate is fixedly connected inside the support frame.

[0019] Through the above technical solution, problems such as omission, repeated cleaning, or local excessive wear that may occur in traditional cleaning methods can be avoided. During the cleaning process, the uniform force applied by the steel brush can reduce damage or excessive wear on the flange surface, thereby avoiding unnecessary defects and improving the overall quality of the flange.

[0020] The beneficial effects of the present invention are as follows: (1) The second motor of the present invention operates to drive the driving gear to rotate, thereby driving the driven gear. Under the action of the connecting rod, the first synchronous belt assemblies on both sides of the support frame are simultaneously driven to drive the circular plate inside the support frame to rotate. While the connecting plate revolves around the circular plate, a relative rotation occurs between the connecting plate and the circular plate, thereby driving the adjusting plate to swing cyclically with the first rotating plate located in the arc-shaped groove as the fulcrum. During the swinging process of the adjusting plate, the moving frame is driven to reciprocate in the linear direction of the support frame, so that the steel brush on the top of the moving frame can clean the casting slag on the end face of the self-rotating flange, and the two sides of the flange can be cleaned quickly and efficiently. Compared with traditional manual cleaning or fixed cleaning tools, the reciprocating motion can complete the cleaning work in a shorter time, improve production efficiency, shorten the process cycle, and reduce downtime; (2) By manually pressing the handrail rod, the frame and its internal components are lifted simultaneously. Moreover, a relative rotation occurs between the frame and the handrail rod, and the frame rotates in a direction away from the second rotating plate. At the same time, while a relative rotation occurs between the second rotating plate and the frame, the second rotating plate follows the frame and rotates synchronously in a direction away from the second rotating plate. After crossing the first support plate, the handrail rod is lifted upward again, so that the frame is located on the top of the first support plate, thereby achieving the purpose of turning the frame over. The manually operated turning-over mechanism has a relatively simple structure and low cost. For small-scale production or small and medium-sized production lines, adopting a manually operated turning-over mechanism can reduce additional equipment investment and save costs while ensuring the cleaning effect; (3) The third motor of the present invention operates to drive the threaded rod to rotate, thereby changing the positional relationship of the slider in the vertical direction of the threaded rod, so that the slider slides in the chute inside the first rotating plate. While the first rotating plate and the support frame have a relative rotation, the first rotating plate is prompted to move along the arc-shaped trajectory of the arc-shaped groove. While a relative sliding occurs between the first rotating plate and the adjusting plate, the position of the fulcrum between the first rotating plate and the adjusting plate is further changed, thereby changing the swinging amplitude of the adjusting plate and prompting the reciprocating frequency of the moving frame to change. By adjusting the frequency and reciprocating amplitude, uniform mechanical friction can be generated on the flange surface to effectively clean both sides of the flange, and the cleaning parameters can be adjusted according to different sizes, thicknesses, and surface states of the flange to ensure that both small-sized and large-sized flanges can achieve the expected cleaning effect. Description of the Drawings

[0021] Figure 1It is a schematic structural diagram of the first perspective of the present invention; Figure 2 It is a schematic structural diagram of the second perspective of the present invention; Figure 3 It is Figure 1 an enlarged schematic structural diagram of part A of Figure 4 It is a schematic structural diagram of the connection between the second motor and the support frame of the present invention; Figure 5 It is Figure 4 an enlarged schematic structural diagram of part B of Figure 6 It is a schematic structural diagram of the connection between the first synchronous belt assembly and the support frame of the present invention; Figure 7 It is Figure 6 an enlarged schematic structural diagram of part C of Figure 8 It is a schematic structural diagram of the connection between the sliding plate and the support frame of the present invention.

[0022] Reference numerals: 11, support frame; 12, frame; 13, H-shaped sliding frame; 14, hydraulic rod; 15, limiting wheel; 16, first motor; 17, chain assembly; 18, sliding plate; 2, cleaning mechanism; 21, second motor; 22, driving gear; 23, driven gear; 24, connecting rod; 25, first synchronous belt assembly; 26, circular plate; 27, connecting plate; 28, adjusting plate; 29, arc-shaped groove; 210, first rotating plate; 211, sliding groove; 212, threaded rod; 213, slider; 214, moving frame; 215, second synchronous belt assembly; 216, third motor; 217, steel brush; 3, turning-over assembly; 31, handrail rod; 32, second rotating plate; 33, first support plate; 34, second support plate. Detailed implementation manners

[0023] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] As Figures 1 - 3As shown, a forging fixture for a nuclear power stainless steel flange in this embodiment includes a support frame 11. A turning-over assembly 3 is fixedly connected to the top of the support frame 11. The turning-over assembly 3 includes two first support plates 33 and two second support plates 34 fixedly connected to the support frame 11. The top of the first support plate 33 is provided with a notch. A frame 12 is movably connected to the notches at the tops of the two first support plates 33. The connecting shafts on both sides of the frame 12 are located at the notches at the tops of the first support plates 33. Second turning plates 32 are rotatably connected to both sides of the frame 12, and the other ends of the second turning plates 32 are rotatably connected to the outer wall of the support frame 11. This not only improves the cleaning efficiency and quality but also enhances the mechanical strength, sealing performance, and corrosion resistance of the flange. Automated cleaning can reduce human errors and improve the operating stability and safety of the equipment. A handrail rod 31 is rotatably connected between the two second support plates 34, and one end of the handrail rod 31 is rotatably connected to the connecting shaft of the frame 12 located at the notch at the top of the first support plate 33. The clamping mechanism is located inside the frame 12 and is used to clean the front and back sides of the flange.

[0025] As Figure 2 and Figure 3 As shown, a clamping mechanism is arranged inside the turning-over assembly 3 and is used to clamp and rotate the flange. The clamping mechanism includes two H-shaped sliding frames 13 that are limited and slidably connected to the inner wall of the frame 12. One of the H-shaped sliding frames 13 is arranged in a T-shaped structure. Limiting wheels 15 are rotatably connected to the two ends inside the H-shaped sliding frame 13. A number of hydraulic rods 14 are installed inside the frame 12, and the a number of hydraulic rods 14 are arranged in a mirror image between every two of them. The telescopic ends of the two hydraulic rods 14 are fixedly connected to the outer wall of the H-shaped sliding frame 13. A first motor 16 is installed inside the H-shaped sliding frame 13 arranged in a T-shaped structure. Manual turning over allows the staff to accurately control the turning angle according to needs, so that the flange can be accurately processed during the cleaning process of each side, ensuring the cleaning effect on both sides of the flange, and can also improve the cleaning accuracy, surface quality, and production efficiency, while reducing equipment investment and operation risks. The output end of the first motor 16 is fixedly connected to a chain assembly 17, and the three sprockets inside the chain assembly 17 are arranged in a triangular structure. At the same time, the output end of the first motor 16 is fixedly connected to one of the sprockets of the chain assembly 17. The other two sprockets inside the chain assembly 17 are welded to the limiting wheels 15. Through the mechanized friction cleaning method, the removal speed of the casting slag is faster than manual cleaning. During the self-rotation process of the flange under the friction of the limiting wheels 15, the cleaning can be completed in a short time, reducing the manual labor intensity. At the same time, it also avoids the errors and missed cleaning situations that may occur during the manual cleaning process. When the first motor 16 operates, it drives the chain assembly 17 to drive, so that the flange rotates self inside the four limiting wheels 15. When the flange rotates, the casting slag on the circumferential surface of the flange is peeled off under the action of the friction force of the limiting wheels 15.

[0026] As Figures 1 - 5As shown, a cleaning mechanism 2 is provided between the support frame 11 and the turning-over assembly 3 for cleaning different surface conditions of the flange. The cleaning mechanism 2 includes two adjusting plates 28 arranged in mirror image. A moving frame 214 is rotatably connected to the tops of the two adjusting plates 28. Both ends of the moving frame 214 are slidably connected through the top of the support frame 11. A number of steel brushes 217 arranged linearly and at equal intervals are installed on the top of the moving frame 214. An arc-shaped groove 29 is formed through one side of the middle of the adjusting plate 28. A first rotating plate 210 is arranged in the arc-shaped groove 29. One end of the first rotating plate 210 is located in the arc-shaped groove 29 and is slidably connected to the adjusting plate 28. The other end of the first rotating plate 210 is rotatably connected to the inner wall of the support frame 11. By adopting this adjustable cleaning mechanism 2, the dependence on manual operation is reduced, and the risk of manual misoperation is reduced. The design of adjustable frequency also enables the equipment to adapt to the cleaning requirements of flanges with different sizes and shapes, thereby reducing the skill requirements for staff and reducing human errors. The inside of the first rotating plate 210 is in a hollow state. A chute 211 is formed through the side of the first rotating plate 210 away from the arc-shaped groove 29. A slider 213 is arranged in the chute 211 and is slidably connected to the first rotating plate 210. Both ends of the slider 213 limit the first rotating plate 210. A threaded rod 212 is connected through the middle of the slider 213 in a threaded manner. It can not only clean the surface impurities of the flange, but also effectively eliminate the minute flaws or unevenness on the surface, thereby improving the processing accuracy of the flange, which has an important impact on the subsequent processing steps of the flange (such as welding, heat treatment, assembly, etc.) and can ensure the smooth progress of the subsequent processes. The bottom of the threaded rod 212 is provided with a second synchronous belt assembly 215. The penetrating ends of the two synchronous wheels in the second synchronous belt assembly 215 are rotatably connected through the support frame 11. The penetrating end of the connecting shaft of the synchronous wheel in the second synchronous belt assembly 215 is fixedly connected to the threaded rod 212. At the same time, a third motor 216 is arranged on the top of one of the threaded rods 212.

[0027] As Figures 1 - 8It is shown that the third motor 216 is fixedly installed on the support frame 11, and the output end of the third motor 216 is rotatably connected to the support frame 11, and the output end of the third motor 216 is fixedly connected to the threaded rod 212, and both ends of the threaded rod 212 are rotatably connected to the support frame 11, the bottom end of the adjustment plate 28 is rotatably connected to the connecting plate 27, and the other end of the connecting plate 27 is rotatably connected to the circular plate 26, and the first synchronous belt assembly 25 is rotatably connected on both sides of the support frame 11, the synchronous wheel in the first synchronous belt assembly 25 is rotatably connected to the outer wall of the support frame 11, and one of the synchronous wheel connecting shafts in the first synchronous belt assembly 25 is rotatably connected to the support frame 11, and the cleaning process is continuous and repeated. By adjusting the frequency and reciprocating amplitude, high-quality cleaning work can be completed in a short time, thereby improving the overall production efficiency. At the same time, one of the synchronous wheel connecting shafts in the first synchronous belt assembly 25 is fixedly connected to the circular plate 26 at the through end, and the support frame 11 is provided with A connecting rod 24 and a second motor 21 are installed on one side of the support frame 11, and the output end of the second motor 21 is rotatably connected to the support frame 11, and at the same time, the through end of the second motor 21 is fixedly connected to a driving gear 22, and a driven gear 23 is transmission-connected to one side of the driving gear 22, and the connecting rod 24 is fixedly connected to the driven gear 23 through and through, and an inclined slide plate 18 is fixedly connected inside the support frame 11, which can avoid problems such as omissions, repeated cleaning or local excessive wear that may occur in traditional cleaning methods. During the cleaning process, the uniform force of the steel brush 217 can reduce damage or excessive wear on the flange surface, thereby avoiding unnecessary defects and improving the overall quality of the flange. Both ends of the connecting rod 24 are rotatably connected to the support frame 11, and the through end of the connecting rod 24 is fixedly connected to another synchronous wheel in the first synchronous belt assembly 25, and at the same time, the connecting plate 27 is rotatably connected to the eccentric part of the circular plate 26, and the circular plate 26 is rotatably connected to the inner wall of the support frame 11.

[0028] The working principle of this embodiment is as follows: the forged flange is placed between two H-shaped slides 13, and the hydraulic rods 14 on both sides are operated to make the two H-shaped slides 13 move toward each other, prompting the four limiting wheels 15 to clamp and limit the flange, and then the first motor 16 is operated to drive the chain assembly 17 to transmit, so that the limiting wheels 15 welded thereto rotate synchronously, so that the flange rotates within the four limiting wheels 15.

[0029] Subsequently, the second motor 21 operates to drive the driving gear 22 to rotate, thereby driving the driven gear 23. Under the action of the connecting rod 24, the first synchronous belt assemblies 25 on both sides of the support frame 11 are simultaneously driven, driving the circular plate 26 inside the support frame 11 to rotate. While the connecting plate 27 revolves with the circular plate 26, a relative rotation occurs between the connecting plate 27 and the circular plate 26, thereby driving the adjusting plate 28 to perform a cyclic swing with the first rotating plate 210 located in the arc-shaped groove 29 as the fulcrum. During the swinging process of the adjusting plate 28, the moving frame 214 is driven to reciprocate in the linear direction of the support frame 11, so that the steel brush 217 on the top of the moving frame 214 cleans the casting slag on the rotating flange end face. The peeled-off casting slag falls onto the inclined surface of the slide plate 18 under the action of gravity and slides out for collection and sorting.

[0030] After cleaning one end face of the flange, the staff can lift the frame 12 and its internal components simultaneously by pressing the handrail 31. Moreover, a relative rotation occurs between the frame 12 and the handrail 31, and the frame 12 rotates in a direction away from the second rotating plate 32. At the same time, while a relative rotation occurs between the second rotating plate 32 and the frame 12, the second rotating plate 32 rotates synchronously with the frame 12 in a direction away from the second rotating plate 32. After crossing the first support plate 33, the handrail 31 is lifted upward again, so that the frame 12 is located on top of the first support plate 33, thereby achieving the purpose of turning over the frame 12 and then cleaning the other end face of the flange.

[0031] When facing different conditions of the flange end face (such as the thickness of the oxide layer, oil stains, etc.), the third motor 216 can be operated to drive the threaded rod 212 to rotate, thereby changing the positional relationship of the slider 213 in the vertical direction of the threaded rod 212, causing the slider 213 to slide in the chute 211 inside the first rotating plate 210. While a relative rotation occurs between the first rotating plate 210 and the support frame 11, the first rotating plate 210 is prompted to move along the arc-shaped trajectory of the arc-shaped groove 29. While a relative sliding occurs between the first rotating plate 210 and the adjusting plate 28, the position of the fulcrum between the first rotating plate 210 and the adjusting plate 28 is further changed, so that the swinging amplitude of the adjusting plate 28 is changed, prompting the reciprocating frequency of the moving frame 214 to be changed, avoiding excessive cleaning or insufficient cleaning, and ensuring the best cleaning effect.

[0032] The above is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A stainless steel flange forging fixture for nuclear power, comprising a support frame (11), characterized in that: A flip assembly (3) is fixedly connected to the top of the support frame (11) for cleaning the front and back sides of the flange; a clamping mechanism is provided inside the flip assembly (3) for clamping and rotating the flange; a cleaning mechanism (2) is provided between the support frame (11) and the flip assembly (3) for cleaning different surface conditions of the flange.

2. A stainless steel flange forging fixture for nuclear power according to claim 1, characterized in that: The flip assembly (3) comprises two first support plates (33) and two second support plates (34) fixedly connected to the support frame (11), and the top of the first support plate (33) is provided with a notch, the two first support plates (33) are movably connected to the notch at the top of the frame (12), and the connecting shafts on both sides of the frame (12) are located at the notch at the top of the first support plate (33), the two sides of the frame (12) are rotatably connected to the second rotating plates (32), and the other end of the second rotating plates (32) is rotatably connected to the outer wall of the support frame (11), a handrail rod (31) is rotatably connected between the two second support plates (34), and one end of the handrail rod (31) is rotatably connected to the connecting shaft of the frame (12) located at the notch at the top of the first support plate (33), and the clamping mechanism is located inside the frame (12).

3. A stainless steel flange forging fixture for nuclear power according to claim 2, characterized in that: The clamping mechanism comprises two H-shaped slides (13) which are limitedly slidably connected to the inner wall of the frame (12), and one of the H-shaped slides (13) is arranged in a T-shaped structure. Both ends of the H-shaped slides (13) are internally rotatably connected to the limit wheels (15). A plurality of hydraulic rods (14) are installed inside the frame (12), and the plurality of hydraulic rods (14) are arranged in a mirror image. The telescopic ends of the two hydraulic rods (14) are connected and fixed to the outer wall of the H-shaped slide (13). A first motor (16) is installed inside the T-shaped H-shaped slide (13). The output end of the first motor (16) is fixedly connected to a chain assembly (17), and the three sprockets in the chain assembly (17) are arranged in a triangular structure. At the same time, the output end of the first motor (16) is connected and fixed to one of the sprockets of the chain assembly (17), and the other two sprockets in the chain assembly (17) are welded to the limit wheels (15).

4. A stainless steel flange forging fixture for nuclear power according to claim 1, characterized in that: The cleaning mechanism (2) comprises two adjustment plates (28) arranged in a mirror image, the top ends of the two adjustment plates (28) are rotatably connected to a moving frame (214), the two ends of the moving frame (214) are slidably connected to the top of the support frame (11), and a plurality of steel brushes (217) arranged in a linear and equal interval are installed on the top of the moving frame (214), an arc groove (29) is penetrated through one side of the middle of the adjustment plate (28), and a first rotating plate (210) is arranged in the arc groove (29), and one end of the first rotating plate (210) is located in the arc groove (29) and is slidably connected to the adjustment plate (28), and the other end of the first rotating plate (210) is rotatably connected to the inner wall of the support frame (11), the interior of the first rotating plate (210) is in a hollow state, and a sliding groove (211) is penetrated through the side of the first rotating plate (210) away from the arc groove (29).

5. A stainless steel flange forging fixture for nuclear power according to claim 4, characterized in that: A slider (213) is provided in the slide groove (211), and the slider (213) is slidably connected to the first rotating plate (210), and at the same time, the two ends of the slider (213) limit the first rotating plate (210), a threaded rod (212) is threadedly connected through the middle of the slider (213), and the two ends of the threaded rod (212) are rotatably connected to the support frame (11), the bottom end of the adjustment plate (28) is rotatably connected to a connecting plate (27), and the other end of the connecting plate (27) is rotatably connected to a circular plate (26), and at the same time, the connecting plate (27) is rotatably connected to the circular plate (26) at an eccentric position, and the circular plate (26) is rotatably connected to the inner wall of the support frame (11).

6. A stainless steel flange forging fixture for nuclear power according to claim 5, characterized in that: A second synchronous belt assembly (215) is arranged at the bottom of the threaded rod (212); two synchronous wheels in the second synchronous belt assembly (215) are rotatably connected to the support frame (11) through their through ends, and a synchronous wheel connecting shaft in the second synchronous belt assembly (215) is fixedly connected to the threaded rod (212) through its through end; a third motor (216) is arranged at the top of one of the threaded rods (212); the third motor (216) is fixedly mounted on the support frame (11), and an output end of the third motor (216) is rotatably connected to the support frame (11); and an output end of the third motor (216) is fixedly connected to the threaded rod (212).

7. A stainless steel flange forging fixture for nuclear power according to claim 5, characterized in that: The first synchronous belt assembly (25) is rotatably connected to both sides of the support frame (11); a synchronous wheel in the first synchronous belt assembly (25) is rotatably connected to the outer wall of the support frame (11); and one of the synchronous wheel connecting shafts in the first synchronous belt assembly (25) is rotatably connected to the support frame (11); and a through end of one of the synchronous wheel connecting shafts in the first synchronous belt assembly (25) is fixedly connected to the circular plate (26); a connecting rod (24) is provided inside the support frame (11); two ends of the connecting rod (24) are rotatably connected to the support frame (11); and the through end of the connecting rod (24) is fixedly connected to another synchronous wheel in the first synchronous belt assembly (25).

8. A stainless steel flange forging fixture for nuclear power according to claim 7, characterized in that: A second motor (21) is mounted on one side of the support frame (11), and an output end of the second motor (21) is rotatably connected to the support frame (11). A driving gear (22) is fixedly connected to the through end of the second motor (21). A driven gear (23) is transmission-connected to one side of the driving gear (22). The connecting rod (24) is fixedly connected to the driven gear (23). An inclined sliding plate (18) is fixedly connected to the inside of the support frame (11).

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