CN111922278B - Process method for riveting fan blades of collector ring fan of generator rotor - Google Patents
Process method for riveting fan blades of collector ring fan of generator rotor Download PDFInfo
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- CN111922278B CN111922278B CN202010814199.7A CN202010814199A CN111922278B CN 111922278 B CN111922278 B CN 111922278B CN 202010814199 A CN202010814199 A CN 202010814199A CN 111922278 B CN111922278 B CN 111922278B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/10—Riveting machines
- B21J15/14—Riveting machines specially adapted for riveting specific articles, e.g. brake lining machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/10—Riveting machines
- B21J15/12—Riveting machines with tools or tool parts having a movement additional to the feed movement, e.g. spin
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Abstract
The invention discloses a process method for riveting fan blades of a collector ring fan of a generator rotor. The fan seat ring and the upper end ring are installed and fixed on the workbench by adopting a spin riveting device, rivets are tightly propped by utilizing the seat ring riveting cushion block and the end ring riveting cushion block, the horizontal and circumferential positions of the whole workpiece are adjusted by the workbench, and riveting is carried out in a vertical pressing and rotating rolling manner, so that the problem of part deformation caused by deviation existing in the original process method due to the fact that an operator holds a pneumatic impact riveting machine for riveting is solved; the positions of the workpieces in the horizontal direction and the circumferential direction need to be continuously adjusted by manpower in the riveting process, and the adjustment is frequent; when an operator holds the pneumatic impact riveting machine for operation, the operator receives strong reaction force of equipment, parts are easy to generate elastic flying due to impact, and the personal safety is threatened. The riveting process has the advantages of reasonable process design, simplicity and convenience in operation, time and labor conservation, guarantee of the riveting quality of products, improvement of the cost performance of the products and the like.
Description
Technical Field
The invention relates to the field of generators, in particular to a process method for riveting fan blades of a collector ring fan of a generator rotor.
Background
In the past, when a pneumatic impact riveting machine is used for riveting the blades of the rotor collecting ring fan, an operator holds the pneumatic impact riveting machine by hand to rivet the blades of the rotor collecting ring fan. The powerful striking fan blade rivet of pneumatic impact riveter during riveting, the rivet is pressed the deformation back and is fixed the fan blade, and operating personnel receives the powerful reaction force of pneumatic impact riveter to there is the risk that the part bullet flies, has very big threat to operating personnel's personal safety. And every time the riveting work of a rivet is finished, the fixation of the fan seat ring needs to be released, the fan seat ring is fixed again by manually adjusting the position of the fan seat ring, and the riveting work of the next rivet is carried out, so that the operation is complex, time and labor are wasted, and the working efficiency is lower. If the position and the angle of the rotor collecting ring fan are improperly adjusted and fixed, the fan seat ring and the upper end ring are easily deformed due to uneven stress of the collecting ring fan caused by poor riveting in the riveting process, and serious people can cause the scrapping of the collecting ring fan and the injury of operators. The novel process method is adopted to rivet the rotor collecting ring fan blade, the rotor collecting ring fan seat ring can be fixed and the riveting position and angle can be adjusted on the workbench of the rotary riveting device, the blade is riveted by the rotary riveting device, the fixing and dismounting times of the rotor collecting ring fan are greatly reduced, the blade can be riveted by keeping an accurate angle, the problem that the collecting ring fan is deformed due to the deviation of blade riveting is solved, the operation is convenient and fast, safety, time and labor are saved, and the riveting quality of the blade is ensured.
Disclosure of Invention
The invention aims to provide a process method for riveting fan blades of a collector ring fan of a generator rotor. The technical scheme of the invention comprises the following steps:
1) the preparation before riveting of upper fan blade (3) and lower fan blade (8) on fan seat ring (1): the fan seat ring (1) is horizontally placed on a workbench (2) of the spin riveting device, and the fan seat ring (1) is fixed by a weight;
2) the auxiliary equipment that upper fan blade (3) and lower floor fan blade (8) riveted on fan seat ring (1) is installed: respectively placing an upper layer fan blade (3) and a lower layer fan blade (8) above and below a fan seat ring (1) according to drawing requirements, enabling riveting holes of the upper layer fan blade (3) and the lower layer fan blade (8) to be aligned with the riveting holes of the fan seat ring (1) one by one, enabling a ball head of a rivet (4) to face downwards, sequentially penetrating the lower layer fan blade (8), the fan seat ring (1) and the upper layer fan blade (3) from the lower direction of the fan seat ring (1), jacking the ball head of the rivet (4) by using a seat ring riveting cushion block (5), and fixing the upper layer fan blade (3) by using a temporary pressing tool;
3) riveting an upper layer fan blade (3) and a lower layer fan blade (8) on the fan seat ring (1): the position of the workbench (2) is adjusted in the horizontal direction and the circumferential direction, so that the rivet (4) is positioned right below the rivet head (7); adjusting the riveting head (7) to a vertical pressing mode, vertically pressing the riveting head (7) downwards to compress the rivets (4) to be full of and tightly support riveting holes of the upper-layer fan blade (3), the fan seat ring (1) and the lower-layer fan blade (8), adjusting the riveting head (7) to a rotary rolling mode, rolling the residual raised rivets (4) into hemispheres to tightly press the upper-layer fan blade (3) to be fixed, and finishing riveting by one rivet (4); adjusting the position of the workbench (2) in the horizontal direction and the circumferential direction, sequentially enabling adjacent rivets (4) to be located under the riveting heads (7), adjusting the riveting heads (7) to a vertical pressing mode, vertically pressing the riveting heads (7) downwards to compress the rivets (4) to be full of and tightly support riveting holes of the upper-layer fan blade (3), the fan seat ring (1) and the lower-layer fan blade (8), adjusting the riveting heads (7) to a rotary rolling mode, and rolling the residual raised rivets (4) into hemispheres to tightly press the upper-layer fan blade (3) to be fixed; until all rivets (4) of the upper layer fan blade (3) and the lower layer fan blade (8) are riveted;
4) riveting other upper-layer fan blades (3) and lower-layer fan blades (8) on the fan seat ring (1): sequentially riveting an upper layer fan blade (3) and a lower layer fan blade (8) at adjacent riveting positions according to the step 2) and the step 3) until all the upper layer fan blades (3) and the lower layer fan blades (8) are riveted on the fan seat ring (1);
5) the upper layer fan blade (3) is prepared before riveting on the upper layer end ring (9): dismantling a fixed press iron on a fan seat ring (1), keeping the fan seat ring (1) horizontal, placing an upper-layer end ring (9) above an upper-layer fan blade (3), enabling riveting holes in the upper-layer end ring (9) to be aligned with riveting holes in the upper-layer fan blade (3) one by one, and fixing the upper-layer end ring (9) by using the press iron;
6) riveting an upper layer fan blade (3) on an upper layer end ring (9): sequentially penetrating rivets (4) through riveting holes of an upper-layer fan blade (3) and an upper-layer end ring (9) from the lower direction of the upper-layer end ring (9), tightly propping ball heads of the rivets (4) by using an end ring riveting cushion block (6), adjusting the position of a workbench (2) in the horizontal direction and the circumferential direction to enable the rivets (4) to be positioned under riveting heads (7), adjusting the riveting heads (7) to a vertical pressing mode, vertically and downwards pressing the riveting heads (7) to compress the rivets (4) to be full of and tightly prop the riveting holes of the upper-layer end ring (9) and the upper-layer fan blade (3), adjusting the riveting heads (7) to a rotary rolling mode, rolling the residual raised rivets (4) into hemispheres to tightly press the upper-layer end ring (9) to fix the rivets (4), and finishing the riveting of one rivet (4) with the upper-layer end ring (9); lifting the riveting head (7), adjusting the position of the workbench (2) in the horizontal direction and the circumferential direction, sequentially enabling adjacent rivets (4) to be located under the riveting head (7), adjusting the riveting head (7) to a vertical pressing mode, vertically pressing the riveting head (7) downwards to compress the rivets (4) to be full of and tightly prop up riveting holes of an upper-layer end ring (9) and an upper-layer fan blade (3), adjusting the riveting head (7) to a rotary rolling mode, rolling the residual raised rivets (4) into hemispheres to tightly press the upper-layer end ring (9) to be fixed, and completing the riveting of the upper-layer fan blade (3) and the upper-layer end ring (9);
7) riveting other upper-layer fan blades (3) with an upper-layer end ring (9): sequentially riveting upper-layer fan blades (3) and upper-layer end rings (9) at adjacent riveting positions according to the step 6) until all the upper-layer fan blades (3) and the upper-layer end rings (9) are riveted;
8) riveting the lower fan blade (8) and the lower end ring (10): removing the fixed weight for fixing the upper end ring (9), turning the riveted part by 180 degrees integrally, and riveting the lower fan blade (8) and the lower end ring (10) according to the method for riveting the upper fan blade (3) and the upper end ring (9) in the steps 5) and 6) when the lower fan blade (8) faces upwards; until all the lower-layer fan blades (8) are riveted with the lower-layer end ring (10); and riveting the collector ring fan of the generator rotor with the fan blade.
Technical effects
Riveting of large-scale turbo generator rotor collecting ring fan blade has long been the original mode that the operating personnel handheld high frequency strikes the riveter and carries out the riveting, the powerful impact of utilizing the high frequency to strike the riveter is with rivet fixation with the blade of collecting ring fan, manual work handheld riveter operation riveting angle deviation is big, easily make the damaged deformation of part lead to the part to scrap, the position of collecting ring fan all needs frequent manpower adjustment in riveting every time, work efficiency is lower, and operating personnel is in the dangerous operation environment of handheld high frequency impact equipment for a long time. The assembling quality of the blades of the slip ring fan is influenced, and serious occupational safety problems are often caused.
The invention deeply analyzes the reasons of poor assembly quality, low efficiency and serious occupational safety problems of the large-scale steam turbine generator rotor collecting ring fan blade, because the riveting angle deviation is large when the high-frequency impact equipment is manually held, the stress of parts is uneven, and because the impact force of the equipment is large, the parts are easy to damage and deform and the assembly quality is poor; the position of the collector ring fan needs to be frequently adjusted by manpower in the riveting process, so that the working efficiency is low; high frequency impact equipment is because vibrations frequency is high, and the amplitude is big, and the controllability is relatively poor when artifical handheld, and operating personnel receives the strong reaction force of equipment, and easily produces the part and play the phenomenon, all has serious threat to staff's health and personal safety.
According to the invention, the spin riveting device is adopted to fix the collector ring fan seat ring on the workbench, the fan blade and the rivet are fixed through the auxiliary tool, the riveting head of the spin riveting device is utilized to rivet in a vertical pressing and rotating rolling manner, the stress of parts is uniform, the riveting holes are filled fully, strong vibration is not generated in the riveting process, the riveting is firm and reliable, and the assembling quality of the fan blade is ensured.
The riveting method aims at solving the problems that the riveting of the blades of the conventional rotor collecting ring fan needs to manually adjust the angle and the position of the fan after riveting each blade, the working efficiency is low, the manual operation deviation is large, and parts are easy to deform to cause part scrapping. Fix the rotor collecting ring fan on horizontal workbench, adjust collecting ring fan riveting position through adjusting the workstation at horizontal direction and circumferencial direction, the position is accurate, can effectively avoid the part deformation because of the position deviation leads to, riveting quality is high, convenient operation is swift, labour saving and time saving.
The method aims at solving the problems that the conventional method for riveting the fan blade of the rotor collecting ring fan needs to manually hold the high-frequency impact equipment, an operator is in a dangerous working environment at a short distance, and is subjected to strong reaction force of the high-frequency impact equipment, parts are easy to bounce and fly, and the physical health and personal safety of the operator are seriously threatened. The mode that the vertical pressure application of die head and rotatory rolling of device are riveted soon in the adoption does not produce the high frequency and strikes, and pressure is applyed evenly, can avoid taking place the part bullet and fly the phenomenon, and the noise is little, the effectual health and the personal safety who ensures the staff.
Drawings
FIG. 1 shows the riveting of the upper and lower blades with the fan seat ring
FIG. 2 shows the upper layer of fan blades riveted with the upper layer of end rings
FIG. 3 shows the riveting of the lower blade and the lower end ring
Detailed Description
The invention aims to provide a riveting process method for fan blades of a collecting ring fan of a rotor of a large-scale steam turbine generator. The technical scheme of the invention comprises the following steps:
1) preparing the upper-layer fan blade 3 and the lower-layer fan blade 8 before riveting on the fan seat ring 1: the fan seat ring 1 is horizontally placed on a workbench 2 of the spin riveting device, and the fan seat ring 1 is fixed by a weight;
2) the auxiliary equipment that upper fan blade 3 and lower floor's fan blade 8 riveted on fan seat ring 1 is installed: respectively placing an upper layer fan blade 3 and a lower layer fan blade 8 above and below a fan seat ring 1 according to drawing requirements, enabling riveting holes of the upper layer fan blade 3 and the lower layer fan blade 8 to be opposite to riveting holes of the fan seat ring 1 one by one, enabling a ball head of a rivet 4 to face downwards, sequentially penetrating the lower layer fan blade 8, the fan seat ring 1 and the upper layer fan blade 3 from the lower direction of the fan seat ring 1, using a seat ring riveting cushion block 5 to prop against the ball head of the rivet 4, and fixing the upper layer fan blade 3 by using a temporary pressing tool;
3) riveting an upper layer fan blade 3 and a lower layer fan blade 8 on the fan seat ring 1: the position of the workbench 2 is adjusted in the horizontal direction and the circumferential direction, so that the rivet 4 is positioned right below the rivet head 7; adjusting the riveting head 7 to a vertical pressing mode, pressing the riveting head 7 vertically downwards to compress the rivets 4 to be full of and tightly support riveting holes of the upper-layer fan blade 3, the fan seat ring 1 and the lower-layer fan blade 8, adjusting the riveting head 7 to a rotary rolling mode, rolling the residual raised rivets 4 into hemispheres to tightly press the upper-layer fan blade 3 to be fixed, and finishing the riveting of one rivet 4; adjusting the position of the workbench 2 in the horizontal direction and the circumferential direction, sequentially enabling adjacent rivets 4 to be located under the riveting heads 7, adjusting the riveting heads 7 to a vertical pressing mode, pressing the riveting heads 7 vertically downwards to compress the rivets 4 to be full of and tightly support riveting holes of the upper-layer fan blade 3, the fan seat ring 1 and the lower-layer fan blade 8, adjusting the riveting heads 7 to a rotary rolling mode, and rolling the residual raised rivets 4 into hemispheres to tightly press the upper-layer fan blade 3 for fixing; until all rivets 4 of one upper layer fan blade 3 and one lower layer fan blade 8 are riveted;
4) riveting other upper-layer fan blades 3 and lower-layer fan blades 8 on the fan seat ring 1: sequentially riveting the upper-layer fan blades 3 and the lower-layer fan blades 8 at adjacent riveting positions according to the step (2) and the step (3) until all the upper-layer fan blades 3 and the lower-layer fan blades 8 are riveted on the fan seat ring 1;
5) the upper layer fan blade 3 is prepared before riveting on the upper layer end ring 9: removing the fixed weights on the fan seat ring 1, keeping the fan seat ring 1 horizontal, placing the upper-layer end ring 9 above the upper-layer fan blades 3, enabling the riveting holes in the upper-layer end ring 9 to be opposite to the riveting holes in the upper-layer fan blades 3 one by one, and fixing the upper-layer end ring 9 by using the weights;
6) riveting an upper layer fan blade 3 on an upper layer end ring 9: sequentially penetrating rivets 4 through riveting holes of an upper layer fan blade 3 and the upper layer end ring 9 from the lower part of the upper layer end ring 9, riveting a cushion block 6 with an end ring to prop against ball heads of the rivets 4, adjusting the position of a workbench 2 in the horizontal direction and the circumferential direction to enable the rivets 4 to be positioned under the rivets 7, adjusting the rivets 7 to a vertical pressing mode, vertically pressing the rivets 4 downwards by the rivets 7 to be full and tightly support the riveting holes of the upper layer end ring 9 and the upper layer fan blade 3, adjusting the rivets 7 to a rotary rolling mode, rolling the residual raised rivets 4 into hemispheres to tightly press the upper layer end ring 9 for fixing, and finishing the riveting of one rivet 4 with the upper layer end ring 9; raising the riveting head 7, adjusting the position of the workbench 2 in the horizontal direction and the circumferential direction, sequentially enabling the adjacent rivets 4 to be positioned under the riveting head 7, adjusting the riveting head 7 to a vertical pressing mode, vertically pressing the riveting head 7 downwards to compress the rivets 4 to be full of and tightly support riveting holes of the upper-layer end ring 9 and the upper-layer fan blade 3, adjusting the riveting head 7 to a rotary rolling mode, rolling the residual raised rivets 4 into hemispheres to tightly press the upper-layer end ring 9 for fixing, and completing the riveting of the upper-layer fan blade 3 and the upper-layer end ring 9;
7) riveting other upper-layer fan blades 3 with an upper-layer end ring 9: sequentially riveting the upper-layer fan blades 3 and the upper-layer end rings 9 at adjacent riveting positions according to the step 6) until all the upper-layer fan blades 3 and the upper-layer end rings 9 are riveted;
8) riveting the lower fan blade 8 and the lower end ring 10: removing the fixed weights for fixing the upper end ring 9, turning the riveted part by 180 degrees integrally, and riveting the lower fan blade 8 and the lower end ring 10 according to the method for riveting the upper fan blade 3 and the upper end ring 9 in the steps 5) and 6) when the lower fan blade 8 faces upwards; until all the lower-layer fan blades 8 are riveted with the lower-layer end ring 10; and riveting the collector ring fan of the generator rotor with the fan blade.
As shown in fig. 1, a fan seat ring 1 is horizontally placed and fixed on a workbench 2, an upper layer fan blade 3 and a lower layer fan blade 8 are respectively placed above and below the fan seat ring 1 according to the drawing requirements, riveting holes of the upper layer fan blade 3 and the lower layer fan blade 8 are opposite to riveting holes on the fan seat ring 1 one by one, rivets 4 penetrate through the riveting holes of the lower layer fan blade 8, a ball head of the rivets 4 is tightly propped by a seat ring riveting cushion block 5, the upper layer fan blade 3 is fixed by a temporary tool, and riveting is carried out by using a riveting head 7 after the position of the workbench 2 is adjusted.
As shown in fig. 2, after all the upper-layer blades 3 and the lower-layer blades 8 are riveted on the fan seat ring 1, an upper-layer end ring 9 is placed right above the upper-layer blades 3, riveting holes in the upper-layer end ring 9 are aligned with riveting holes in the upper-layer blades 3 one by one, rivets 4 penetrate upwards from the riveting holes in the upper-layer blades 3, end rings are used for riveting cushion blocks 6 to prop against ball heads of the rivets 4, the position of the workbench 2 is adjusted, and riveting is performed by using riveting heads 7.
As shown in fig. 3, after the riveting of the upper-layer fan blade 3 and the upper-layer end ring 9 is completed, the completed part is turned over by 180 degrees integrally, the lower-layer fan blade 8 is made to face upwards, the lower-layer end ring 10 is placed above the lower-layer fan blade 8, the riveting holes in the lower-layer end ring 10 are aligned to the riveting holes in the lower-layer fan blade 8 one by one, rivets 4 penetrate upwards from the riveting holes in the lower-layer fan blade 8, the end rings and the riveting cushion blocks 6 are used for propping against the ball heads of the rivets 4, the position of the workbench 2 is adjusted, and the rivets are performed by using the riveting heads 7.
The invention relates to a novel process for riveting fan blades of a collector ring fan of a generator rotor, which is characterized in that the riveting position is fixed and adjusted by using a workbench of a spin riveting device, and rivets are fixed by using a seat ring riveting cushion block and an end ring riveting cushion block, so that the accurate riveting of the fan blades of the collector ring fan of the rotor is realized, and the problem that parts are deformed or even scrapped due to deviation caused by manual position adjustment of operators and manual pneumatic impact riveting machines is solved.
The novel process method is adopted to rivet the fan blades of the collector ring fan of the generator, so that the problems that the operator holds the pneumatic impact riveting machine by hand, the strong reaction force is applied to the pneumatic impact riveting machine, and the personal safety is threatened due to the impact and the flying of parts are solved. The riveting position of the whole workpiece is adjusted through the workbench, the horizontal direction and the circumferential direction of the whole workpiece are prevented from being frequently adjusted through manpower by operators, time and labor are saved, the production period is shortened, and the economical efficiency and the practicability are both considered.
Claims (1)
1. A process method for riveting fan blades of a collector ring fan of a generator rotor is characterized by comprising the following steps:
1) the preparation before riveting of upper fan blade (3) and lower fan blade (8) on fan seat ring (1): the fan seat ring (1) is horizontally placed on a workbench (2) of the spin riveting device, and the fan seat ring (1) is fixed by a weight;
2) the auxiliary equipment that upper fan blade (3) and lower floor fan blade (8) riveted on fan seat ring (1) is installed: respectively placing an upper layer fan blade (3) and a lower layer fan blade (8) above and below a fan seat ring (1) according to drawing requirements, enabling riveting holes of the upper layer fan blade (3) and the lower layer fan blade (8) to be aligned with the riveting holes of the fan seat ring (1) one by one, enabling a ball head of a rivet (4) to face downwards, sequentially penetrating the lower layer fan blade (8), the fan seat ring (1) and the upper layer fan blade (3) from the lower direction of the fan seat ring (1), jacking the ball head of the rivet (4) by using a seat ring riveting cushion block (5), and fixing the upper layer fan blade (3) by using a temporary pressing tool;
3) riveting an upper layer fan blade (3) and a lower layer fan blade (8) on the fan seat ring (1): the position of the workbench (2) is adjusted in the horizontal direction and the circumferential direction, so that the rivet (4) is positioned right below the rivet head (7); adjusting the riveting head (7) to a vertical pressing mode, vertically pressing the riveting head (7) downwards to compress the rivets (4) to be full of and tightly support riveting holes of the upper-layer fan blade (3), the fan seat ring (1) and the lower-layer fan blade (8), adjusting the riveting head (7) to a rotary rolling mode, rolling the residual raised rivets (4) into hemispheres to tightly press the upper-layer fan blade (3) to be fixed, and finishing riveting by one rivet (4); adjusting the position of the workbench (2) in the horizontal direction and the circumferential direction, sequentially enabling adjacent rivets (4) to be located under the riveting heads (7), adjusting the riveting heads (7) to a vertical pressing mode, vertically pressing the riveting heads (7) downwards to compress the rivets (4) to be full of and tightly support riveting holes of the upper-layer fan blade (3), the fan seat ring (1) and the lower-layer fan blade (8), adjusting the riveting heads (7) to a rotary rolling mode, and rolling the residual raised rivets (4) into hemispheres to tightly press the upper-layer fan blade (3) to be fixed; until all rivets (4) of the upper layer fan blade (3) and the lower layer fan blade (8) are riveted;
4) riveting other upper-layer fan blades (3) and lower-layer fan blades (8) on the fan seat ring (1): sequentially riveting an upper layer fan blade (3) and a lower layer fan blade (8) at adjacent riveting positions according to the step 2) and the step 3) until all the upper layer fan blades (3) and the lower layer fan blades (8) are riveted on the fan seat ring (1);
5) the upper layer fan blade (3) is prepared before riveting on the upper layer end ring (9): dismantling a fixed press iron on a fan seat ring (1), keeping the fan seat ring (1) horizontal, placing an upper-layer end ring (9) above an upper-layer fan blade (3), enabling riveting holes in the upper-layer end ring (9) to be aligned with riveting holes in the upper-layer fan blade (3) one by one, and fixing the upper-layer end ring (9) by using the press iron;
6) riveting an upper layer fan blade (3) on an upper layer end ring (9): sequentially penetrating rivets (4) through riveting holes of an upper-layer fan blade (3) and an upper-layer end ring (9) from the lower direction of the upper-layer end ring (9), tightly propping ball heads of the rivets (4) by using an end ring riveting cushion block (6), adjusting the position of a workbench (2) in the horizontal direction and the circumferential direction to enable the rivets (4) to be positioned under riveting heads (7), adjusting the riveting heads (7) to a vertical pressing mode, vertically and downwards pressing the riveting heads (7) to compress the rivets (4) to be full of and tightly prop the riveting holes of the upper-layer end ring (9) and the upper-layer fan blade (3), adjusting the riveting heads (7) to a rotary rolling mode, rolling the residual raised rivets (4) into hemispheres to tightly press the upper-layer end ring (9) to fix the rivets (4), and finishing the riveting of one rivet (4) with the upper-layer end ring (9); lifting the riveting head (7), adjusting the position of the workbench (2) in the horizontal direction and the circumferential direction, sequentially enabling adjacent rivets (4) to be located under the riveting head (7), adjusting the riveting head (7) to a vertical pressing mode, vertically pressing the riveting head (7) downwards to compress the rivets (4) to be full of and tightly prop up riveting holes of an upper-layer end ring (9) and an upper-layer fan blade (3), adjusting the riveting head (7) to a rotary rolling mode, rolling the residual raised rivets (4) into hemispheres to tightly press the upper-layer end ring (9) to be fixed, and completing the riveting of the upper-layer fan blade (3) and the upper-layer end ring (9);
7) riveting other upper-layer fan blades (3) with an upper-layer end ring (9): sequentially riveting upper-layer fan blades (3) and upper-layer end rings (9) at adjacent riveting positions according to the step 6) until all the upper-layer fan blades (3) and the upper-layer end rings (9) are riveted;
8) riveting the lower fan blade (8) and the lower end ring (10): removing the fixed weight for fixing the upper end ring (9), turning the riveted part by 180 degrees integrally, and riveting the lower fan blade (8) and the lower end ring (10) according to the method for riveting the upper fan blade (3) and the upper end ring (9) in the steps 5) and 6) when the lower fan blade (8) faces upwards; until all the lower-layer fan blades (8) are riveted with the lower-layer end ring (10); and riveting the collector ring fan of the generator rotor with the fan blade.
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| CN202010814199.7A CN111922278B (en) | 2020-08-13 | 2020-08-13 | Process method for riveting fan blades of collector ring fan of generator rotor |
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| CN202010814199.7A CN111922278B (en) | 2020-08-13 | 2020-08-13 | Process method for riveting fan blades of collector ring fan of generator rotor |
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| CN111922278B true CN111922278B (en) | 2022-01-14 |
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