Hydrogenerator main shaft welding device

Abstract

The invention discloses a main shaft welding device for a hydro-turbine generator, comprising a support plate, a clamping mechanism and a welding mechanism; wherein the clamping structure is connected above the support plate, the clamping structure is used to clamp the main shaft and the flywheel and make the flywheel and the main shaft rotate synchronously; the welding mechanism is used to weld the flywheel and the main shaft; the clamping mechanism comprises a support column, a chuck, a bearing, a connecting plate, a connecting plate, a driving device, a first clamping frame, a second clamping frame and a fixing frame; the support column is fixedly connected to both sides of the support plate, the bearing is fixedly connected to the support column, the chuck is rotatably connected to the bearing, the chuck is used to clamp the main shaft, and the driving device is used to drive the chuck to rotate; the first clamping frame is used to clamp the flywheel, the second clamping frame is used to clamp the first clamping frame, and the fixing frame is used to limit the position of the second clamping frame. Through this structure, the position of the flywheel can be effectively fixed, thereby ensuring that the welding of the flywheel and the main shaft is convenient and the coaxiality between the flywheel and the main shaft is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a main shaft welding device for a hydro-generator. Background Art

[0002] Driven by the strong demand for electricity in my country, my country's turbine and auxiliary machinery manufacturing industry has entered a period of rapid development, with its economic scale and technical level significantly improved, and my country's turbine manufacturing technology has reached the world's advanced level. At present, the comprehensive strength of my country's turbine and auxiliary machinery manufacturing industry has increased significantly, and the industry has shown a gratifying situation of vigorous development and vitality. The signs of the industry's improvement are reflected in the improvement of economic operation quality and the significant growth of economic benefits.

[0003] In a large hydro-turbine generator, a flywheel is arranged in the middle of the main shaft of the hydro-turbine generator, and the flywheel is used to drive the rotor to rotate, and generate electricity through the cooperation between the stator and the rotor. The main shaft of the existing hydro-turbine generator is usually processed by cutting technology, and the flywheel in the middle needs to be welded later. However, the existing welding device is difficult and troublesome to operate when welding the flywheel, and cannot effectively ensure the coaxiality of the flywheel and the main shaft.

[0004] A main shaft of a hydro-turbine generator is disclosed in a patent with application number CN201821661349.X, and the technical solution adopted is "comprising a main engine shaft section, an auxiliary engine shaft section and a coupling mechanism, and is characterized in that the main shaft of the hydro-turbine generator is also provided with a flywheel, and the flywheel is arranged between the main engine shaft section and the auxiliary engine shaft section." The main shaft manufactured in this way still cannot guarantee the coaxiality between the flywheel and the main shaft. Summary of the invention

[0005] The purpose of the present invention is to provide a hydro-generator main shaft welding device to solve the following technical problems raised in the background technology:

[0006] The existing welding device is difficult and troublesome to operate when welding the flywheel, and cannot effectively ensure the coaxiality of the flywheel and the main shaft.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A main shaft welding device for a hydro-turbine generator comprises a support plate, a clamping mechanism and a welding mechanism; wherein the clamping structure is connected above the support plate, the clamping structure is used to clamp the main shaft and the flywheel and make the flywheel and the main shaft rotate synchronously; the welding mechanism is used to weld the flywheel and the main shaft;

[0009] The clamping mechanism includes a support column, a chuck, a bearing, a connecting plate, a connecting plate, a driving device, a first clamping frame, a second clamping frame and a fixing frame; the support column is fixedly connected to both sides of the support plate, the bearing is fixedly connected to the support column, the chuck is rotatably connected to the bearing, the chuck is used to clamp the spindle, and the driving device is used to drive the chuck to rotate; the first clamping frame is used to clamp the flywheel, the second clamping frame is used to clamp the first clamping frame, and the fixing frame is used to limit the position of the second clamping frame;

[0010] The connecting disk is fixedly connected to the chuck, and the two ends of the connecting plate are respectively fixedly connected to the connecting disk; a sliding groove is provided in the middle of the connecting disk, and the first clamping frame includes two first clamping plates, and the two first clamping plates are connected by bolts; the fixing frame is fixedly connected to both sides of the connecting plate, and fixing holes are provided on the upper and lower sides of the fixing frame, and limiting columns are provided in the fixing holes; the second clamping device includes two second clamping plates; limiting holes are provided at both ends of the second clamping plate, and the second clamping plate is connected with the limiting columns through the limiting holes, and the two second clamping plates are connected by bolts.

[0011] Furthermore, the driving device adopts a servo motor, and the driving device and the chuck are connected through a worm gear mechanism, wherein the worm wheel is fixed to the chuck, the worm is connected to the output shaft of the driving device, and the worm wheel and the worm are meshed.

[0012] Furthermore, the connecting plate, the first clamping frame, the second clamping frame and the fixing frame form a set of flywheel clamping structures, and at least two sets of flywheel clamping structures are arranged between the connecting plates.

[0013] Furthermore, the welding mechanism includes a connecting seat, a first movable arm and a welding head; movable grooves and adjustment plates are arranged on both sides of the support plate, and sliders are arranged at the bottom of both sides of the adjustment plate, and the sliders are slidably connected in the movable grooves; a screw rod is rotatably connected in the movable groove, the slider is fixedly connected to the screw rod nut, and the screw rod nut is cooperatively connected to the screw rod; the connecting seat is connected to the adjustment plate, the first movable arm is connected to the connecting seat, and the welding head is connected to the first movable arm; the adjustment plate is an I-shaped plate, and a sliding sleeve is arranged at the bottom of the connecting seat, the sliding sleeve is arranged outside the connecting seat, and the connecting seat is slidably connected to the adjustment plate through the sliding sleeve.

[0014] Furthermore, a rotating ring is rotatably connected to the middle of the connecting seat, a mounting plate is fixedly connected to one side of the rotating ring, a second movable arm is fixedly connected to the mounting plate, a suction device is connected to the second movable arm, and the suction device is used to absorb welding slag.

[0015] Furthermore, the suction device includes a shell, a rotating head, a rotating member, a mounting sleeve, a fan blade, a transmission shaft and a power mechanism; wherein, a mounting chamber and an air chamber are arranged in the shell, an air inlet is arranged on one side of the shell and an air outlet is arranged on the other side, the air inlet is communicated with the air chamber, and the air outlet is communicated with the mounting chamber; the transmission shaft is rotatably connected in the mounting chamber, the transmission shaft is connected to the power mechanism, the power mechanism is used to drive the transmission shaft to rotate, and a first gear and a second gear are arranged on the transmission shaft; the inner wall of one side of the air chamber is rotatably connected with the mounting sleeve, and the fan blade is connected in the mounting sleeve; a first gear ring is arranged outside the mounting sleeve, and the first gear ring is meshed with the first gear; when the fan blade rotates, the air suction direction is toward the air chamber, and the air outlet direction is toward the mounting chamber; the rotating head is rotatably connected to the top of the air chamber, and a wire brush is arranged on the top of the rotating head; the rotating member is rotatably connected to the outer wall of the top of the air chamber, the rotating member is connected to the rotating head, and a second gear ring is fixedly connected to the outer side of the rotating member, and the second gear ring is meshed with the second gear.

[0016] Furthermore, the power mechanism adopts a motor, a first bevel gear is arranged on the output shaft of the motor, a second bevel gear is arranged on the transmission shaft, and the first bevel gear is meshed with the second bevel gear.

[0017] Furthermore, the rotating head is a structure with a top expanding outwards.

[0018] Furthermore, a receiving cover is provided on the support plate at the bottom of the connecting plate, and the receiving cover is used to collect welding slag.

[0019] Furthermore, a safety pad made of rubber material is arranged on the support plate.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The limiting column in the fixing frame of the present invention prevents the two second clamping plates from moving left and right, up and down, and after the two second clamping plates clamp the two first clamping plates, the two first clamping plates cannot move up and down, left and right, so that the clamped flywheel cannot move left and right, up and down. The sliding groove prevents the two first clamping plates from moving forward and backward, so that the clamped flywheel cannot move forward and backward. This design can stabilize the position of the flywheel, thereby facilitating the positioning of the flywheel and the main shaft, thereby effectively ensuring the coaxiality between the flywheel and the main shaft.

[0022] With the structure of the present invention, when welding is performed, the driving device rotates the chuck, and the main shaft rotates with the chuck. At the same time, the connecting plate also rotates, and the connecting plate drives the connecting plate to rotate, and the connecting plate drives the first clamping plate and the second clamping plate to rotate, thereby causing the flywheel to rotate. In this process, the flywheel and the main shaft rotate synchronously, thereby facilitating the welding of the flywheel and the main shaft, and effectively ensuring the welding quality of the flywheel and the main shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 for Figure 1 A magnified schematic diagram of point A;

[0025] Figure 3 It is a schematic diagram of the internal structure of the suction device of the present invention.

[0026] Markings in the figure: 1-support plate, 2-receiving cover, 3-support column, 4-driving device, 5-worm, 6-worm wheel, 7-bearing, 8-spindle, 9-connecting plate, 10-connecting plate, 11-chuck, 12-flywheel, 13-welding head, 14-first movable arm, 15-housing, 16-second movable arm, 17-mounting plate, 18-connecting seat, 19-rotating ring, 20-sliding sleeve, 21-screw, 22-adjusting plate, 23-movable groove, 24-first clamping plate, 25-fixed frame, 26-second clamping plate , 27-sliding groove, 28-limiting column, 29-transmission shaft, 30-second gear, 31-rotating head, 32-wire brush, 33-air inlet, 34-rotating member, 35-second gear ring, 36-air cavity, 361-first section, -362-second section, 363-negative pressure cavity, 364-rotating cavity, 365-receiving cavity, 366-filter plate, 37-air outlet, 38-power mechanism, 39-first gear ring, 40-first bevel gear, 41-second bevel gear, 42-first gear, 43-installation cavity. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments 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. Example

[0028] A main shaft welding device for a hydro-turbine generator comprises a support plate 1, a clamping mechanism and a welding mechanism; wherein the clamping structure is connected above the support plate 1, the clamping structure is used to clamp the main shaft 8 and the flywheel 12 and make the flywheel 12 and the main shaft 8 rotate synchronously; the welding mechanism is used to weld the flywheel 12 and the main shaft 8;

[0029] The clamping mechanism includes a support column 3, a chuck 11, a bearing 7, a connecting plate 10, a connecting plate 9, a driving device 4, a first clamping frame, a second clamping frame and a fixed frame 25; the support column 3 is fixedly connected to both sides of the support plate 1, the bearing 7 is fixedly connected to the support column 3, the chuck 11 is rotatably connected to the bearing 7, the chuck 11 is used to clamp the spindle 8, and the driving device 4 is used to drive the chuck 11 to rotate; the first clamping frame is used to clamp the flywheel 12, the second clamping frame is used to clamp the first clamping frame, and the fixed frame 25 is used to limit the position of the second clamping frame;

[0030] The connecting disk 10 is fixedly connected to the chuck 11, and the two ends of the connecting plate 9 are respectively fixedly connected to the connecting disk 10; a sliding groove 27 is provided in the middle of the connecting disk 10, and the first clamping frame includes two first clamping plates 24, and the two first clamping plates 24 are connected by bolts; the fixing frame 25 is fixedly connected to the two sides of the connecting plate 9, and the upper and lower sides of the fixing frame 25 are provided with fixing holes, and limiting columns 28 are provided in the fixing holes; the second clamping device includes two second clamping plates 26; limiting holes are provided at both ends of the second clamping plate 26, and the second clamping plate 26 is connected with the limiting columns 28 through the limiting holes, and the two second clamping plates 26 are connected by bolts.

[0031] Specifically, in actual use, the flywheel 12 of the hydro-turbine generator is installed together with the main shaft 8, and the main shaft 8 and the flywheel 12 are hoisted between the two chucks 11, and the two ends of the main shaft 8 are clamped and fixed by the chucks 11. The position of the flywheel 12 is adjusted. After the flywheel 12 is adjusted to the correct position, the two first clamping plates 24 are inserted into the sliding groove 27 and clamp the flywheel 12, and the two first clamping plates 24 are connected together by bolts so that the two first clamping plates 24 can stably clamp the flywheel 12. It should be noted here that in order to ensure that the two first clamping plates 24 and the second clamping plates 26 can stably clamp the flywheel 12, positioning holes can be opened at both ends of the two first clamping plates 24, and positioning columns are movably inserted in the positioning holes. Limiting heads are set at both ends of the positioning columns. This design can effectively prevent the two first clamping plates 24 from tilting when they are locked and clamped by bolts, thereby ensuring stable clamping of the flywheel 12. After the two first clamping plates 24 are connected to the flywheel 12, the positions of the two second clamping plates 26 are moved so that the two second clamping plates 26 clamp the two first clamping plates 24, and the two second clamping plates 26 are locked by bolts. Since the limiting columns 28 in the fixing frame 25 prevent the two second clamping plates 26 from moving left and right, up and down, after the two second clamping plates 26 clamp the two first clamping plates 24, the two first clamping plates 24 also cannot move up and down, left and right, so that the clamped flywheel 12 cannot move left and right, up and down. The sliding groove 27 prevents the two first clamping plates 24 from moving forward and backward, so that the clamped flywheel 12 cannot move forward and backward. This design can stabilize the position of the flywheel 12, thereby facilitating the positioning of the flywheel 12 and the main shaft 8, thereby effectively ensuring the coaxiality between the flywheel 12 and the main shaft 8. During welding, the chuck 11 is rotated by the driving device 4, and the main shaft 8 rotates with the chuck 11. At the same time, the connecting disk 10 will also rotate, and the connecting disk 10 drives the connecting plate 9 to rotate, and the connecting plate 9 drives the first clamping plate 24 and the second clamping plate 26 to rotate, thereby causing the flywheel 12 to rotate. In this process, the flywheel 12 and the main shaft 8 rotate synchronously, thereby facilitating the welding of the flywheel 12 and the main shaft 8, and effectively ensuring the welding quality of the flywheel 12 and the main shaft 8.

[0032] In a preferred embodiment, the driving device 4 adopts a servo motor, and the driving device 4 is connected to the chuck 11 through a worm gear mechanism, wherein the worm wheel 6 is fixed to the chuck 11, the worm 5 is connected to the output shaft of the driving device 4, and the worm wheel 6 is meshed with the worm 5. The servo motor is provided to facilitate the control of the rotation, so as to achieve precise adjustment of the rotation angle of the main shaft 8 and the flywheel 12. At the same time, a worm gear mechanism is adopted, and through the worm gear and the reduction transmission, on the one hand, a motor with a smaller output torque can be used, and on the other hand, the rotation angle of the main shaft 8 and the flywheel 12 can be conveniently observed and controlled. The worm gear mechanism also has a self-locking function, which can effectively prevent the main shaft 8 and the flywheel 12 from rotating.

[0033] In a preferred embodiment, the connecting plate 9, the first clamping frame, the second clamping frame and the fixing frame 25 form a set of flywheel clamping structures, and at least two sets of flywheel clamping structures are arranged between the connecting plates 10. The two sets of flywheel clamping structures are arranged to ensure the force balance at both ends of the flywheel 12, so that the flywheel clamping structure can clamp the flywheel 12 more stably.

[0034] In a preferred embodiment, the welding mechanism includes a connecting seat 18, a first movable arm 14 and a welding head 13; movable grooves 23 and an adjusting plate 22 are arranged on both sides of the support plate 1, and sliders are arranged on the bottom of both sides of the adjusting plate 22, and the sliders are slidably connected in the movable grooves 23; a screw rod 21 is rotatably connected in the movable groove 23, the slider is fixedly connected to the screw rod nut, and the screw rod nut is cooperatively connected to the screw rod 21; the connecting seat 18 is connected to the adjusting plate 22, the first movable arm 14 is connected to the connecting seat 18, and the welding head 13 is connected to the first movable arm 14; the adjusting plate 22 is an I-shaped plate, and a sliding sleeve 20 is arranged at the bottom of the connecting seat 18, and the sliding sleeve 20 is sleeved on the outside of the connecting seat 18, and the connecting seat 18 is slidably connected to the adjusting plate 22 through the sliding sleeve 20.

[0035] Specifically, in actual use, the screw nut matched with the screw 21 is moved by rotating the screw 21, and the movement of the screw nut drives the slider to move forward and backward in the movable groove 23, and the movement of the slider drives the adjustment plate 22 to move forward and backward, so that the connecting seat 18, the first movable arm 14 and the welding head 13 can be close to the main shaft 8 and the flywheel 12 or away from the main shaft 8 and the flywheel 12. The adjustment plate 22 of the I-shaped structure prevents the sliding sleeve 20 matched with it from rotating on the adjustment plate 22. At the same time, the left and right positions of the connecting seat 18, the first movable arm 14 and the welding head 13 can be adjusted by moving the sliding sleeve 20, so as to facilitate welding of the welding head 13. It should be noted that the first movable arm 14 adopts a mechanical arm in the prior art, which can drive the welding head 13 to move or rotate in multiple directions, such as the kinova gen3 lite type mechanical arm.

[0036] In a preferred embodiment, the middle part of the connecting seat 18 is rotatably connected to a rotating ring 19, one side of the rotating ring 19 is fixedly connected to a mounting plate 17, a second movable arm 16 is fixedly connected to the mounting plate 17, and a suction device is connected to the second movable arm 16, and the suction device is used to absorb welding slag. The suction device sucks away the welding slag at the welding position by suction, which is convenient for the staff to observe the welding effect, thereby ensuring the welding effect between the main shaft 8 and the flywheel 12. When grinding the welded area, the suction device can also be used to suck away the grinding slag. Similarly, it should be noted that the second movable arm 16 adopts the existing technology, and the second movable arm 16 can drive the second suction device to rotate and move in multiple directions at the same time. For example, the second movable arm 16 adopts a kinova gen3 lite type robot arm.

[0037] In a preferred embodiment, the suction device includes a shell 15, a rotating head 31, a rotating member 34, a mounting sleeve, a fan blade, a transmission shaft 29 and a power mechanism 38; wherein, a mounting cavity 43 and an air cavity 36 are provided in the shell 15, an air inlet 33 is provided on one side of the shell 15 and an air outlet 37 is provided on the other side, the air inlet 33 is communicated with the air cavity 36, and the air outlet 37 is communicated with the mounting cavity 43; the transmission shaft 29 is rotatably connected in the mounting cavity 43, the transmission shaft 29 is connected to the power mechanism 38, the power mechanism 38 is used to drive the transmission shaft 29 to rotate, and the transmission shaft 29 is provided with a first gear 42 and The second gear 30; the inner wall of one side of the air cavity 36 is rotatably connected with a mounting sleeve, and the fan blade is connected in the mounting sleeve; a first gear ring 39 is arranged outside the mounting sleeve, and the first gear ring 39 is meshed with the first gear 42; when the fan blade rotates, the air intake direction is toward the air cavity 36, and the air outlet direction is toward the mounting cavity 43; the rotating head 31 is rotatably connected to the top of the air cavity 36, and a wire brush 32 is arranged on the top of the rotating head 31; the rotating member 34 is rotatably connected to the outer wall of the top of the air cavity 36, the rotating member 34 is connected to the rotating head 31, and the outer side of the rotating member 34 is fixedly connected with a second gear ring 35, and the second gear ring 35 is meshed with the second gear 30.

[0038] Specifically, in actual use, the power mechanism 38 drives the transmission shaft 29 to rotate, and the transmission shaft 29 drives the first gear ring 39 to rotate through the first gear 42, and the first gear ring 39 drives the installation sleeve to rotate, and the installation sleeve drives the fan blades to rotate. After the fan blades rotate, negative pressure is formed in the air cavity 36, so that suction is formed at the top of the air cavity 36, so that the welding slag is sucked away. When the transmission shaft 29 rotates, the second gear ring 35 is also driven to rotate through the second gear 30, and the second gear ring 35 drives the rotating member 34 to rotate, and the rotating member 34 drives the rotating head 31 to rotate. After the rotating head 31 rotates, the wire brush 32 on the rotating head 31 is used to clean the welding part, and the adhered welding slag is brushed off, thereby ensuring the welding effect. Through this design, it is possible to achieve cleaning the welding part while absorbing the welding slag, which can effectively ensure the flatness of the welding part and facilitate the observation of the welding effect. At the same time, the fan of this design blows wind into the installation cavity 43, which can cool the power mechanism 38 in the installation cavity 43 and ensure the stability of the work.

[0039] It should be noted that the air cavity 36 includes a first section 361, a second section 362, a material receiving cavity 365, a rotating cavity 364 and a negative pressure cavity 363. The first section 361 is connected to the air inlet 33, the second section 362 is arranged vertically with the first section 361, the material receiving cavity 365 is connected to the second section 362, the rotating cavity 364 is connected to the material receiving cavity 365, a filter plate 366 is arranged between the material receiving cavity 365 and the rotating cavity 364, and the mounting sleeve is connected to the negative pressure cavity 363. After the fan blades in the mounting sleeve rotate, a short negative pressure environment is formed in the negative pressure cavity 363, and at the same time, the air in the first section 361, the second section 362, the material receiving cavity 365 and the rotating cavity 364 moves toward the negative pressure cavity 363, and is finally discharged from the negative pressure cavity 363 to the mounting cavity 43, and finally discharged from the air outlet 37. During this process, a negative pressure environment is formed at the air inlet 33 at the top of the first section 361, which can suck the welding slag into the first section 361, and then enter the second section 362 through the first section 361, and then enter the receiving chamber 365 after passing through the second section 362. A filter plate 366 is arranged between the receiving chamber 365 and the rotating chamber 364. The rotating chamber 364 is connected to the negative pressure chamber 363 through the connecting hole at the top. The rotating chamber 364 and the filter plate 366 can effectively prevent the welding slag from entering the negative pressure chamber 363, thereby facilitating the collection of welding slag waste.

[0040] In a preferred embodiment, the power mechanism 38 is a motor, a first bevel gear 40 is provided on the output shaft of the motor, a second bevel gear 41 is provided on the transmission shaft 29, and the first bevel gear 40 meshes with the second bevel gear 41. The motor is easy to control and has a small size, so the motor is used as the power mechanism 38.

[0041] In a preferred embodiment, the rotating head 31 is a structure with the top expanding outwards. Such a structure of the rotating head 31 can receive the fallen welding slag to a greater extent, thereby achieving effective absorption of the welding slag.

[0042] In a preferred embodiment, a receiving cover 2 is provided on the support plate 1 at the bottom of the connecting plate 9, and the receiving cover 2 is used to collect welding slag. When welding, the receiving cover 2 is used to receive the welding slag scattered during welding.

[0043] In a preferred embodiment, a safety pad made of rubber material is provided on the support plate 1. The safety pad is used to prevent the main shaft 8 from falling off the chuck 11 and being damaged. The safety pad made of rubber material can cushion the falling main shaft 8 and flywheel 12, thereby effectively preventing the main shaft 8 and flywheel 12 from being damaged after falling.

[0044] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0045] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydro-generator main shaft welding device, characterized in that: It comprises a support plate (1), a clamping mechanism and a welding mechanism; wherein the clamping structure is connected above the support plate (1), the clamping structure is used to clamp the main shaft (8) and the flywheel (12) and enable the flywheel (12) and the main shaft (8) to rotate synchronously; and the welding mechanism is used to weld the flywheel (12) and the main shaft (8); The clamping mechanism comprises a support column (3), a chuck (11), a bearing (7), a connecting plate (10), a connecting plate (9), a driving device (4), a first clamping frame, a second clamping frame and a fixing frame (25); the support column (3) is fixedly connected to both sides of the support plate (1), the bearing (7) is fixedly connected to the support column (3), the chuck (11) is rotatably connected to the bearing (7), the chuck (11) is used to clamp the main shaft (8), and the driving device (4) is used to drive the chuck (11) to rotate; the first clamping frame is used to clamp the flywheel (12), the second clamping frame is used to clamp the first clamping frame, and the fixing frame (25) is used to limit the position of the second clamping frame; The connecting disk (10) is fixedly connected to the chuck (11), and the two ends of the connecting plate (9) are respectively fixedly connected to the connecting disk (10); a sliding groove (27) is provided in the middle of the connecting disk (10); the first clamping frame comprises two first clamping plates (24), and the two first clamping plates (24) are connected by bolts; the fixing frame (25) is fixedly connected to both sides of the connecting plate (9), and the upper and lower sides of the fixing frame (25) are provided with fixing holes, and limiting columns (28) are provided in the fixing holes; the second clamping device comprises two second clamping plates (26); limiting holes are provided at both ends of the second clamping plates (26), and the second clamping plates (26) are matched and connected with the limiting columns (28) through the limiting holes, and the two second clamping plates (26) are connected by bolts; The welding mechanism comprises a connecting seat (18), a first movable arm (14) and a welding head (13); movable grooves (23) and an adjusting plate (22) are arranged on both sides of the supporting plate (1); sliders are arranged at the bottoms of both sides of the adjusting plate (22); the sliders are slidably connected in the movable grooves (23); a screw rod (21) is rotatably connected in the movable grooves (23); the sliders are fixedly connected to the screw rod nut; the screw rod nut is cooperatively connected to the screw rod (21); the connecting seat (18) is connected to the adjusting plate (22); the first movable arm (14) is connected to the connecting seat (18); and the welding head (13) is connected to the first movable arm (14); the adjusting plate (22) is an I-shaped plate; a sliding sleeve (20) is arranged at the bottom of the connecting seat (18); the sliding sleeve (20) is sleeved outside the connecting seat (18); the connecting seat (18) is slidably connected to the adjusting plate (22) via the sliding sleeve (20).

2. A hydro-generator main shaft welding device according to claim 1, characterized in that: The driving device (4) adopts a servo motor, and the driving device (4) is connected to the chuck (11) through a worm gear mechanism, wherein the worm wheel (6) is fixedly connected to the chuck (11), the worm gear (5) is connected to the output shaft of the driving device (4), and the worm wheel (6) is meshed with the worm gear (5).

3. A hydro-generator main shaft welding device according to claim 1, characterized in that: The connecting plate (9), the first clamping frame, the second clamping frame and the fixing frame (25) form a set of flywheel clamping structures, and at least two sets of flywheel clamping structures are arranged between the connecting plates (10).

4. A hydro-generator main shaft welding device according to claim 1, characterized in that: A rotating ring (19) is rotatably connected to the middle of the connecting seat (18), a mounting plate (17) is fixedly connected to one side of the rotating ring (19), a second movable arm (16) is fixedly connected to the mounting plate (17), and a suction device is connected to the second movable arm (16), which is used to absorb welding slag.

5. A hydro-generator main shaft welding device according to claim 1, characterized in that: The material suction device comprises a housing (15), a rotating head (31), a rotating member (34), a mounting sleeve, a fan blade, a transmission shaft (29) and a power mechanism (38); wherein a mounting cavity (43) and an air cavity (36) are arranged in the housing (15); an air inlet (33) is arranged on one side of the housing (15) and an air outlet (37) is arranged on the other side; the air inlet (33) is communicated with the air cavity (36), and the air outlet (37) is communicated with the mounting cavity (43); the transmission shaft (29) is rotatably connected in the mounting cavity (43); the transmission shaft (29) is connected to the power mechanism (38); the power mechanism (38) is used to drive the transmission shaft (29) to rotate; the transmission shaft (29) ) is provided with a first gear (42) and a second gear (30); an inner wall of one side of the air cavity (36) is rotatably connected to a mounting sleeve, and the fan blade is connected inside the mounting sleeve; a first gear ring (39) is provided outside the mounting sleeve, and the first gear ring (39) is meshed with the first gear (42); a rotating head (31) is rotatably connected to the top of the air cavity (36), and a wire brush (32) is provided on the top of the rotating head (31); a rotating member (34) is rotatably connected to the outer wall of the top of the air cavity (36), the rotating member (34) is connected to the rotating head (31), and a second gear ring (35) is fixedly connected to the outer side of the rotating member (34), and the second gear ring (35) is meshed with the second gear (30).

6. A hydro-generator main shaft welding device according to claim 5, characterized in that: The power mechanism (38) adopts a motor, the output shaft of the motor is provided with a first bevel gear (40), the transmission shaft (29) is provided with a second bevel gear (41), and the first bevel gear (40) is meshed with the second bevel gear (41).

7. A hydro-generator main shaft welding device according to claim 5, characterized in that: The rotating head (31) is a structure with the top expanding outwards.

8. A hydro-generator main shaft welding device according to claim 1, characterized in that: A receiving cover (2) is provided on the support plate (1) at the bottom of the connecting plate (9), and the receiving cover (2) is used to collect welding slag.

9. A hydro-generator main shaft welding device according to claim 1, characterized in that: A safety pad made of rubber material is arranged on the support plate (1).

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