Forging device for safety end forge piece of reactor pressure vessel and forging method of forging device
By designing a forging device that contains the main forging workbench and side forging, a device completes the central opening and tube wall forging operation of the safety end forging of the reactor pressure vessel in a device to solve the problem of slow and difficult operations for forging. Realize efficient forging conversion and automation cleaning.
Patent Information
- Application Number
- CN202411837734.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-01-28
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the processing of the safety end forging of the reactor pressure vessel, the center opening of the forging and the subsequent pipe wall forging are divided into two parts, which need to move between the two forging equipment, resulting in slow movement speed and long time, and need to hold the top of the forging. Move it, increasing the difficulty of operation.
A forging device for forging devices for a reactor pressure container safety end forging is designed, including the main forging workbench and side forging, and one side of the main forging workbench for plane forging. The rotation of the main forging workbench and side forging, one forging device can complete two forging operations, reducing the movement between the equipment and improving the operating efficiency.
The two forging operations of forging are completed in one device, reducing the movement time between equipment, increasing forging conversion speed, reducing the difficulty of operation, and automatic cleaning the iron residue through the side scraping strip, reducing the demand for manual cleaning.
Smart Images
Figure CN119368665A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of forging equipment, and in particular to a forging device for a safety end forging of a reactor pressure vessel and a forging method thereof. Background Art
[0002] The safety end of the reactor pressure vessel has extremely high requirements on the performance of materials, so the safety end of the reactor pressure vessel is manufactured by forging. The safety end of the reactor pressure vessel is processed by forging, turning and welding. The forging of the safety end of the reactor pressure vessel is opened by forging equipment. The opening of the forging is a tubular structure for forging the tube wall.
[0003] In the processing of the reactor pressure vessel safety end forgings, the center opening of the forging and the subsequent tube wall forging are divided into two parts and are carried out in two forging equipment. The center opening of the forging is moved to another equipment for tube wall forging operations. The movement of large forgings requires great caution and the movement speed of the forgings is slow. In addition, the opening of the forging and the need to be penetrated and hung on a transverse cylindrical rod. After the opening of the forging and the transverse cylindrical rod are penetrated, it is also necessary to support the top of the forging and move it to the middle position of the transverse cylindrical rod. The switching of forgings takes a long time. Summary of the invention
[0004] The disclosed embodiments relate to a forging device and a forging method for a safety end forging of a reactor pressure vessel. Plane forging operations are performed on one side of a main forging workbench, and inside and outside forging operations of a hole in the middle are performed on a side forging frame on the other side of the main forging workbench. The main forging workbench and the side forging frame are rotated to achieve a change in the operation mode. One forging equipment can perform two forging operations, eliminating the need for switching and moving back and forth between two places. The upward movement of the side push plate provides auxiliary support for the middle forging beam that passes through the middle of the forging material, and the lower part of the forging material moves along the top pulley, thereby reducing the difficulty of horizontal movement and installation of the forging material and the middle forging beam and accelerating the speed of forging conversion.
[0005] According to a first aspect of the present disclosure, a forging device for a safety end forging of a reactor pressure vessel is provided, which specifically comprises: a main forging worktable, a lower forging base, a side thrust plate and a side forging frame, wherein the bottom surface of the main forging worktable is fitted with the lower forging base, a side thrust plate is vertically slid on one side of the lower forging base, a side forging frame is fixed to the middle of the lower forging base, a middle circular shaft is fixed to the center of the main forging worktable, a middle tooth block is provided in an annular array at the lower part of the middle circular shaft, the middle tooth block is meshedly connected with a driving gear, and the center of the driving gear is fixed to the main shaft of a driving motor.
[0006] In at least some embodiments, the main forging workbench is an elliptical structure, the middle circular shaft and the lower forging base are slidably connected, the driving motor and the lower forging base are fixedly connected, the top of the second side block and the main forging workbench are flush, the second side block blocks the horizontal moving path of the movable bracket, the second side block fixes the position of the movable bracket, and the main forging workbench and the side forging frame are rotated to achieve the change of operation mode.
[0007] In at least some embodiments, a first side block is fixed to one side of the lower forged base, an outer slideway is provided on the side of the first side block close to the lower forged base, a second side block is fixed to the other side of the lower forged base, a side scraper strip is rotated in cooperation with the outer rotating shaft at the top of the second side block, an inner limit block is fixed to the top of the second side block, a limit ball column is vertically slidable on one side of the lower forged base close to the second side block, a lower support spring is fixed to the bottom of the limit ball column, and a middle tray is vertically slidable in the middle of the lower forged base.
[0008] In at least some embodiments, the top annular array of the middle tray has a rotating upper roller, and the main forging worktable moves along the upper roller. A first lifting cylinder is fixed on both sides of the middle tray, a second lifting cylinder is fixed on the outer side of the lower forging base, and the telescopic rod of the second lifting cylinder is fixed with an upper bracket.
[0009] In at least some embodiments, a coil spring is arranged between the second side block and the side scraper strip, the coil spring pulls the second side block to fit against the outer side of the inner limit block, and the movable bracket can push the second side block to move outward during the conversion process, the coil spring pulls the second side block to reset, the lower end of the lower support spring is fixed to the lower forging base, and the lower support spring supports the top spherical surface of the limit ball column to engage with the bottom groove of the main forging workbench.
[0010] In at least some embodiments, when the upper roller is lower than the top surface of the lower forging base, the top surface of the lower forging base fits with the bottom surface of the main forging worktable, the first lifting cylinder extends the middle tray and the supporting upper roller to move upward, the supporting upper roller fits with the bottom surface of the main forging worktable, the main forging worktable moves up and separates from the lower forging base, and the main forging worktable moves along the upper roller.
[0011] In at least some embodiments, the top array of the side push plate has a rotating top pulley. When the side push plate is above the upper bracket, the second lifting cylinder extends to support the upper bracket and the side push plate to move up and protrude to the top of the main forging workbench. The side push plate moves up and protrudes above the main forging workbench. The middle hole of the forging material and the middle forging beam are penetrated, and the top pulley contacts the bottom of the forging material. The middle part of the forging material is penetrated by the middle forging beam for auxiliary support, and the lower part of the forging material moves along the top pulley. The top pulley reduces the friction of the forging material movement.
[0012] In at least some embodiments, a middle forging beam is welded and fixed to the top of the side forging frame, and the top of the movable bracket at the tail end of the middle forging beam slides and fits to share the pressure of the forging material on the middle forging beam, the movable bracket slides and fits with the groove on the top of the main forging workbench, the side push plate is between the movable bracket and the side forging frame, the groove on the top of the main forging workbench is flush with the outer slide, and the movable bracket slides with the outer slide.
[0013] The invention discloses a manufacturing process of a forging device for a safety end forging of a reactor pressure vessel, comprising the following steps: Place the forged metal material on the plane on one side of the main forging workbench to forge the middle hole; The middle hole of the forged metal material is moved out to one side after forging, and the movable bracket is moved into the outer slideway; The roller on the middle tray moves upward and fits with the main forging worktable and lifts upward. The main forging worktable rotates circumferentially around the middle circular axis, and the side push plate moves to the top of the upper bracket along with the main forging worktable. The upper bracket pushes the side push plate to rise, and the forged metal material with the middle opening moves along the top pulley to the middle forging beam. After the upper bracket and the side push plate are lowered and reset, the main forging worktable rotates and resets to the side of the movable bracket; The movable bracket moves to the bottom of the middle forging beam, and the forged metal material rotates 180 degrees along the circular axis of the main forging worktable to the bottom of the forging equipment for internal and external forging.
[0014] The present invention provides a forging device and a forging method for a safety end forging of a reactor pressure vessel, which have the following beneficial effects: Plane forging operations are performed on one side of the main forging workbench, and the side forging frame on the other side of the main forging workbench performs inside and outside forging operations on the central hole. The main forging workbench and the side forging frame rotate to achieve the change of operation mode. One forging equipment can perform two forging operations, eliminating the need to move back and forth between two places.
[0015] During forging, the bottom surface of the main forging worktable and the lower forging base fit together to provide sufficient forging support. When the main forging worktable needs to be moved, the middle tray supports the main forging worktable to move up and separate from the lower forging base. The main forging worktable moves along the upper roller to reduce the friction during movement and reduce the driving rotation pressure of the main forging worktable.
[0016] The upward movement of the side thrust plate provides auxiliary support for the middle forging beam that penetrates the middle part of the forging material, and the lower part of the forging material moves along the top pulley, which reduces the difficulty of horizontal movement and installation of the forging material and the middle forging beam, speeds up the forging conversion, and reduces the conversion time.
[0017] During the rotation of the main forging worktable, the side scraper is fitted against the top of the main forging worktable, and the side scraper cleans the iron slag remaining on the main forging worktable, eliminating the need for personnel to manually clean the iron slag on the top of the main forging worktable. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.
[0019] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.
[0020] In the attached picture: Figure 1 A schematic diagram showing the overall structure of the present application; Figure 2 A schematic cross-sectional structure diagram of the lower forged base of the present application is shown; Figure 3 A schematic diagram of the structure of the middle tray of the present application is shown; Figure 4 A structural schematic diagram showing a side thrust plate in a lifting state of the present application is shown; Figure 5 A schematic diagram showing the structure of the movable bracket of the present application being located close to the side scraper strip; Figure 6 A structural schematic diagram showing a lifting state of the middle tray of the present application is shown; Figure 7 The structural schematic diagram of the middle circular shaft of the present application is shown; Figure 8 A schematic diagram showing the split state of the present application; Reference numerals list 1. Main forging workbench; 102. Middle round shaft; 103. Middle gear block; 104. Driving gear; 105. Driving motor; 2. Lower forging base; 201. First side block; 202. Outer slideway; 203. Second side block; 204. Side scraper; 205. Inner limit block; 206. Limit ball column; 207. Lower support spring; 208. Middle tray; 209. Upper roller; 210. First lifting cylinder; 211. Second lifting cylinder; 212. Upper bracket; 3. Side push plate; 301. Top pulley; 4. Side forging frame; 401. Middle forging beam; 402. Movable bracket. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0022] Example 1: Please refer to Figures 1 to 8 : The present invention provides a forging device for a safety end forging of a reactor pressure vessel, comprising: a main forging workbench 1, a lower forging base 2, a side thrust plate 3 and a side forging frame 4, a middle round shaft 102 is fixed at the center of the main forging workbench 1, a middle gear block 103 is provided in a ring array at the lower part of the middle round shaft 102, the middle gear block 103 is meshed and connected with a driving gear 104, the center of the driving gear 104 is fixed to the main shaft of a driving motor 105, the bottom surface of the main forging workbench 1 is fitted with a lower forging base 2, a first side block 201 is fixed to one side of the lower forging base 2, an outer slideway 201 is provided on the side of the first side block 201 close to the lower forging base 2 2, a second side block 203 is fixed on the other side of the lower forging base 2, a side scraper 204 is rotated in cooperation with the outer rotating shaft at the top of the second side block 203, an inner limit block 205 is fixed on the top of the second side block 203, a limit ball column 206 is vertically slidable on the side of the lower forging base 2 close to the second side block 203, a lower support spring 207 is fixed at the bottom of the limit ball column 206, a middle tray 208 is vertically slidable in the middle of the lower forging base 2, a rotating upper roller 209 is arranged in a circular array on the top of the middle tray 208, the main forging workbench 1 moves along the upper roller 209, and first lifting cylinders 21 are fixed on both sides of the middle tray 208 0, a second lifting cylinder 211 is fixed on the outer side of the lower forging base 2, and an upper bracket 212 is fixed to the telescopic rod of the second lifting cylinder 211. A coil spring is arranged between the second side block 203 and the side scraper strip 204, and the coil spring pulls the second side block 203 to fit the outer side of the inner limit block 205. During the conversion process of the movable bracket 402, the second side block 203 can be pushed to move outward, and the coil spring pulls the second side block 203 to reset. The lower end of the lower support spring 207 is fixed to the lower forging base 2, and the lower support spring 207 supports the top spherical surface of the limit ball column 206 to engage with the bottom groove of the main forging workbench 1, and the limit ball column 206 is on the main forging workbench When the table 1 is forging, when the upper roller 209 is lower than the top surface of the lower forging base 2, the top surface of the lower forging base 2 fits with the bottom surface of the main forging worktable 1, and the first lifting cylinder 210 extends the middle tray 208 and supports the upper roller 209 to move up, supporting the upper roller 209 to fit with the bottom surface of the main forging worktable 1, and the main forging worktable 1 moves up and separates from the lower forging base 2. The main forging worktable 1 moves along the upper roller 209, and the rotation of the upper roller 209 reduces the friction force of the main forging worktable 1 when it moves. A side push plate 3 is vertically slid on one side of the lower forging base 2, and a side forging frame 4 is fixed to the middle of the lower forging base 2.
[0023] In the disclosed embodiment, the main forging workbench 1 is an elliptical structure, the middle circular shaft 102 is slidably connected to the lower forging base 2, the middle circular shaft 102 is long enough so that the middle circular shaft 10 can still maintain meshing with the middle gear block 103 after being lifted, the driving motor 105 is fixedly connected to the lower forging base 2, the top of the second side block 203 is flush with the main forging workbench 1, the second side block 203 blocks the horizontal moving path of the movable bracket 402, the second side block 203 fixes the position of the movable bracket 402, the main forging workbench 1 and the side forging frame 4 are rotated to realize the change of operation mode, and one forging equipment can perform two forging operations, eliminating the situation where the forging is divided into two places and needs to be moved back and forth.
[0024] In the disclosed embodiment, the top array of the side push plate 3 has a rotating top pulley 301. When the side push plate 3 is above the upper bracket 212, the second lifting cylinder 211 extends to support the upper bracket 212 and the side push plate 3 to move up and protrude to the top of the main forging workbench 1. The side push plate 3 moves up and protrudes above the main forging workbench 1. The middle hole of the forging material and the middle forging beam 401 are penetrated, and the top pulley 301 contacts the bottom of the forging material. The middle of the forging material penetrates the middle forging beam 401. 01 Auxiliary support, the lower part of the forging material moves along the top pulley 301, the forging material can move to the middle of the middle forging beam 401 without contacting the middle forging beam 401, the forging material can be pushed and moved on both sides, and even if the forging material is tilted, it can maintain a vertical state with the middle forging beam 401 under gravity after the top pulley 301 drops. The top pulley 301 reduces the friction of the forging material movement and reduces the difficulty of horizontal movement and penetration installation of the forging material and the middle forging beam 401.
[0025] In the disclosed embodiment, a middle forging beam 401 is welded and fixed to the top of the side forging frame 4, and the top of the movable bracket 402 at the tail end of the middle forging beam 401 slides and fits to share the pressure of the forging material on the middle forging beam 401, and the movable bracket 402 and the top groove of the main forging workbench 1 slide and fit, and the side push plate 3 is between the movable bracket 402 and the side forging frame 4, and the top groove of the main forging workbench 1 is flush with the outer slide 202, and the movable bracket 402 and the outer slide 202 slide, and the movable bracket 402 and the middle forging beam 401 are separated, so as to facilitate the installation operation of the tubular forging parts on the middle forging beam 401.
[0026] The invention discloses a manufacturing process of a forging device for a safety end forging of a reactor pressure vessel, comprising the following steps: Placing the forged metal material on a plane on one side of the main forging workbench 1 to forge the middle hole; The middle hole of the forged metal material is moved out to one side after forging, and the movable bracket 402 is moved into the outer slideway 202; The roller 209 on the middle tray 208 moves upward and fits with the main forging worktable 1 and is lifted upward. The main forging worktable 1 rotates circumferentially around the middle circular axis 102, and the side push plate 3 moves to the top of the upper bracket 212 along with the main forging worktable 1. The upper bracket 212 pushes the side push plate 3 to rise, and the forged metal material with the middle opening moves along the top pulley 301 to the middle forging beam 401. After the upper bracket 212 and the side push plate 3 are lowered and reset, the main forging workbench 1 rotates and resets to the side of the movable bracket 402; The movable bracket 402 moves to the bottom of the middle forging beam 401, and the forged metal material rotates 180 degrees along the circular axis of the main forging worktable 1 to the bottom of the forging equipment for internal and external forging.
[0027] Embodiment 2, on the basis of embodiment 1, second lifting cylinders 211 are provided on both sides of the lower forging base 2, and the two second lifting cylinders 211 are connected and fixed to an annular upper bracket 212, and the main forging worktable 1 moves along the circumference of the annular upper bracket 212, so that during the synchronous movement of the forging material of the main forging worktable 1, the upper bracket 212 does not need to be lowered, and the upper bracket 212 maintains the raised support for the side push plate 3, and the protrusion of the side push plate 3 supports the forging material, sharing the pressure of the forging material on the center forging beam 401.
[0028] The working principle of the first embodiment is as follows: the other side of the main forging workbench 1 opposite to the side forging frame 4 is located below the forging equipment, the metal to be forged is heated and then placed on the plane on the other side opposite to the side forging frame 4 of the main forging workbench 1 for forging operation, the conical die is placed in the middle of the metal, the forging hammer of the forging equipment presses the conical die into the metal, the middle hole of the metal forging is opened, and the forging is forged into a tubular structure. During forging, the bottom surface of the main forging workbench 1 and the lower forging base 2 fit together to provide sufficient forging support, and after the middle hole of the forging is forged, it is moved out and heated continuously; The side forging frame 4 on the other side of the main forging workbench 1 can perform internal and external forging operations on the hole in the middle part. The middle forging beam 401 of the side forging frame 4 is heated and installed through the tubular forgings. The movable bracket 402 moves to the outer slide 202, and the movable bracket 402 and the middle forging beam 401 are separated. When the main forging workbench 1 rotates first, the first lifting cylinder 210 supports the middle tray 208 to move up, and the upper roller 209 of the middle tray 208 contacts the ground of the main forging workbench 1 and pushes the main forging workbench 1 to move up. The main forging workbench 1 and the lower forging base 2 are separated, and the driving motor 105 is started to drive the driving gear 104 to rotate. The driving gear 104 engages to drive the middle gear block 103 and the middle circular shaft 102 to rotate. The middle circular shaft 102 and the main forging workbench 1 rotate, and the main forging workbench 1 moves along the movement of the upper roller 209. The rotation of 9 reduces the friction force when the main forging workbench 1 moves, and reduces the pressure of the driving motor 105 on the rotational driving of the main forging workbench 1. The main forging workbench 1 and the side forging frame 4 and the middle forging beam 401 and the side push plate 3 move synchronously. The side push plate 3 moves to the middle tray 208 and stops. The second lifting cylinder 211 extends to push the side push plate 3 to move upward. The upward movement of the side push plate 3 protrudes above the main forging workbench 1. The middle hole position of the forging material and the middle forging beam 401 are penetrated. The top pulley 301 contacts the bottom of the forging material. The middle part of the forging material penetrates the middle forging beam 401 for auxiliary support. The lower part of the forging material moves along the top pulley 301. The top pulley 301 reduces the friction force of the forging material movement, reduces the difficulty of the horizontal movement and penetration installation of the forging material and the middle forging beam 401, speeds up the forging conversion, and reduces the conversion time. Then the second lifting cylinder 211 is shortened, the side push plate 3 is moved down and reset, the main forging workbench 1 is rotated and reset to align with the movable bracket 402, the movable bracket 402 is moved to the bottom of the middle forging beam 401 to support the middle forging beam 401, and then the main forging workbench 1 is continuously lifted by the middle tray 208 and moved 180 degrees, the middle forging beam 401 is moved to the bottom of the forging equipment, the forging hammer is moved down to cooperate with the middle forging beam 401 to forge the wall of the tubular forging, the main forging workbench 1 and the side forging frame 4 are rotated to realize the change of operation mode, and one forging equipment can perform two forging operations, eliminating the need for forging in two places and the need to switch back and forth; During the rotation of the main forging worktable 1 , the side scraper bar 204 is fitted with the top plane of the main forging worktable 1 , and the side scraper bar 204 scrapes off and cleans the iron slag produced by forging on the main forging worktable 1 , eliminating the need for personnel to manually clean the iron slag on the top of the main forging worktable 1 .
[0029] In this article, there are a few points to note: 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.
[0030] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.
[0031] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.
Claims
1. A forging device for a reactor pressure vessel safety end forging, comprising: A main forging workbench (1), a lower forging base (2), a side push plate (3) and a side forging frame (4); characterized in that the bottom surface of the main forging workbench (1) is fitted with the lower forging base (2), a side push plate (3) is vertically slidable on one side of the lower forging base (2), a side forging frame (4) is fixed in the middle of the lower forging base (2), a first side block (201) is fixed on one side of the lower forging base (2), and an outer slideway (202) is provided on the side of the first side block (201) close to the lower forging base (2) ), a second side block (203) is fixed on the other side of the lower forged base (2), a side scraper (204) is rotated in cooperation with the outer rotating shaft at the top of the second side block (203), an inner limit block (205) is fixed on the top of the second side block (203), a limit ball column (206) is vertically slidable on one side of the lower forged base (2) close to the second side block (203), a lower support spring (207) is fixed at the bottom of the limit ball column (206), and a middle tray (208) is vertically slidable in the middle of the lower forged base (2).
2. A forging device for a reactor pressure vessel safety end forging according to claim 1, characterized in that: A central circular shaft (102) is fixed at the center of the main forging workbench (1), a central tooth block (103) is provided in a ring array at the bottom of the central circular shaft (102), the central tooth block (103) is meshedly connected with a driving gear (104), and the center of the driving gear (104) is fixed to the main shaft of a driving motor (105).
3. A forging device for a reactor pressure vessel safety end forging according to claim 2, characterized in that: The main forging workbench (1) is an elliptical structure, the middle circular shaft (102) and the lower forging base (2) are slidably connected, the driving motor (105) and the lower forging base (2) are fixedly connected, and the top of the second side block (203) and the main forging workbench (1) are flush.
4. A forging device for a reactor pressure vessel safety end forging according to claim 3, characterized in that: The top annular array of the middle tray (208) has a rotating upper roller (209), both sides of the middle tray (208) are fixed with a first lifting cylinder (210), the outer side of the lower forging base (2) is fixed with a second lifting cylinder (211), and the telescopic rod of the second lifting cylinder (211) is fixed with an upper bracket (212).
5. A forging device for a reactor pressure vessel safety end forging according to claim 4, characterized in that: A coil spring is provided between the second side block (203) and the side scraper strip (204), and the coil spring pulls the second side block (203) to fit against the outside of the inner limit block (205). The lower end of the lower support spring (207) is fixed to the lower forging base (2), and the top of the limit ball column (206) is engaged with the bottom groove of the main forging workbench (1).
6. A forging device for a reactor pressure vessel safety end forging according to claim 5, characterized in that: When the upper roller (209) is lower than the top surface of the lower forging base (2), the top surface of the lower forging base (2) fits with the bottom surface of the main forging worktable (1), the first lifting cylinder (210) extends the middle tray (208) and the supporting upper roller (209) to move upward, the supporting upper roller (209) fits with the bottom surface of the main forging worktable (1), and the main forging worktable (1) moves upward and separates from the lower forging base (2).
7. A forging device for a reactor pressure vessel safety end forging according to claim 6, characterized in that: The top array of the side push plate (3) has a rotating top pulley (301). When the side push plate (3) is above the upper bracket (212), the second lifting cylinder (211) extends to support the upper bracket (212) and the side push plate (3) to move upward and protrude to the top of the main forging workbench (1).
8. A forging device for a reactor pressure vessel safety end forging according to claim 7, characterized in that: A middle forging beam (401) is welded and fixed to the top of the side forging frame (4), the top of the movable bracket (402) at the tail end of the middle forging beam (401) is slidably fitted, the movable bracket (402) and the top groove of the main forging workbench (1) are slidably fitted, the side push plate (3) is located between the movable bracket (402) and the side forging frame (4), and the top groove of the main forging workbench (1) is flush with the outer slideway (202).
9. The forging method of a forging device for a reactor pressure vessel safety end forging according to claim 8, characterized in that: The following steps are involved: 1) Place the forging metal material on a plane on one side of the main forging workbench (1) to forge the middle hole; 2) After forging, the middle hole of the forged metal material is moved out to one side, and the movable bracket (402) is moved into the outer slideway (202); 3) The roller (209) on the middle tray (208) moves upward and fits with the main forging worktable (1) and lifts upward, the main forging worktable (1) rotates in a circular direction around the middle circular axis (102), and the side push plate (3) moves to the top of the upper bracket (212) along with the main forging worktable (1); 4) The upper bracket (212) pushes the side push plate (3) to rise, and the forged metal material with the central opening moves along the top pulley (301) to the middle forging beam (401). After the upper bracket (212) and the side push plate (3) are lowered and reset, the main forging worktable (1) rotates and resets to the side of the movable bracket (402); 5) The movable bracket (402) moves to the bottom of the middle forging beam (401), and the forged metal material rotates 180 degrees along the circular axis of the main forging worktable (1) to the bottom of the forging equipment for internal and external forging.