Universal welding tool for fan impeller

Abstract

The utility model relates to the technical field of impeller welding, in particular to a universal welding tool for fan impellers. The bottom surface of the side frame is fixedly connected with the top surface, close to the end side, of the base; the side wall of the rotating disc is rotationally connected with the inner side wall of the side frame; the extension rod is fixedly connected with the other side wall of the rotating disc; and the end side of the connector is fixedly connected with the other end side of the extension rod. According to the tool for machining the wheel discs, the containing disc, the sliding groove, the double-shaft motor, the first lead screw, the second lead screw, the movable block, the arc-shaped clamping block and the pressing module are arranged in a matched mode, so that the tool can adapt to the wheel discs of different sizes and thicknesses, and the universality and flexibility of the tool are improved. Through cooperative arrangement of the annular grooves, the inserting blocks, the top plates, the electric telescopic rods and the clamping modules, the blades can be accurately positioned and fixed, and the blades of different numbers and sizes can be clamped and positioned by controlling the electric telescopic rods to extend or contract or reducing or increasing the number of the inserting blocks.

Description

Technical Field

[0001] This utility model relates to the field of impeller welding technology, specifically a general welding fixture for wind turbine impellers. Background Technology

[0002] The impeller is the core component of a fan. Its main function is to convert the kinetic energy of airflow into pressure energy, thereby realizing the transport of gas. During the impeller processing, several blades need to be welded onto the disc. Traditional fan impeller welding processes have many technical challenges, which limit the improvement of production efficiency and quality.

[0003] Traditional welding fixtures often employ a fixed design, making it difficult to adapt to impellers and blades of different sizes. This necessitates frequent fixture changes or cumbersome adjustments during actual operation, increasing production costs and reducing efficiency. Furthermore, blades require precise positioning and stability during welding to ensure weld quality and impeller balance. However, traditional welding fixtures often lack precise blade positioning and fixing mechanisms, requiring manual assistance for positioning. This makes blades prone to displacement or wobbling during welding, affecting weld quality and impeller balance. Utility Model Content

[0004] The purpose of this utility model is to provide a universal welding fixture for wind turbine impellers to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A universal welding fixture for wind turbine impellers, comprising:

[0007] base;

[0008] The side frame is fixedly connected to the top surface of the base near the end side;

[0009] The rotating disk has its side wall rotatably connected to the inner side wall of the side frame;

[0010] The extension rod is fixedly connected to the other side wall of the rotating disk;

[0011] The connector is fixedly connected at one end to the other end of the extension rod.

[0012] Mounting plate, fixedly connected to the outer side wall of the side frame;

[0013] Servo motor 2 has its bottom surface fixedly connected to the top surface of the mounting plate, and its motor shaft passes through the side frame and is connected to the rotating disk for transmission.

[0014] A clamping mechanism includes a placement tray with a groove on its top surface. The bottom surface of the groove is rotatably connected to the side wall of the connector. A dual-axis motor is fixedly connected inside the groove. The two motor shafts of the dual-axis motor are respectively driven by lead screw one and lead screw two. The outer walls of lead screw one and lead screw two are screwed with moving blocks. The top surfaces of the two moving blocks are fixedly connected with arc-shaped clamping blocks. The outer walls of the two arc-shaped clamping blocks are fixedly connected with pressing modules. A blade fixing unit is sleeved and fixedly attached to the outer wall of the placement tray. The blade fixing unit includes a ring with an annular groove on its top surface. Several plug-in blocks are inserted into the annular groove at equal angles. The top surfaces of the plug-in blocks are fixedly connected with top plates. The inner side walls of the top plates are fixedly connected with electric telescopic rods. The output ends of the electric telescopic rods are fixedly connected with clamping modules.

[0015] Preferably, a servo motor is fixedly connected inside the connector, and the motor shaft of the servo motor passes through the side wall of the connector and is connected to the placement disk for transmission.

[0016] Preferably, a column is fixedly connected to the top surface of the base, a bracket is fixedly connected to the top of the column, and the inner arc surface of the bracket contacts the outer wall of the extension rod.

[0017] Preferably, the outer wall of the ring is provided with a plurality of threaded holes I at equal angles, and the positions where the plurality of plug blocks are plugged into the annular groove are provided with threaded holes II that match the threaded holes I.

[0018] Furthermore, the clamping module includes:

[0019] The shell has its side walls fixedly connected to the outer wall of the arc-shaped clamping block, and its interior has grooves.

[0020] The threaded rod has a bottom end that is rotatably connected to the inner wall of the groove, and a top end that is fixedly connected to a knob through the top surface of the housing.

[0021] The connecting block has three threaded holes on its surface that engage with the outer wall of the threaded rod.

[0022] The pressure plate and side wall are fixedly connected to the other end of the connecting block.

[0023] Preferably, both the pressure plate and the arc-shaped clamping block are covered with rubber.

[0024] Furthermore, the clamping module includes:

[0025] The outer casing and its outer side wall are fixedly connected to the output end of the electric telescopic rod.

[0026] There are two rotating shafts, both ends of which are rotatably connected to the inner wall of the outer casing;

[0027] There are two gears, which are respectively sleeved and fixed to the outer walls of two rotating shafts;

[0028] There are two connecting rods, one end of each connecting rod is respectively sleeved and fixed to the outer wall of the two rotating shafts;

[0029] Two flexible clamping blocks are provided, and the interiors of the two flexible clamping blocks are rotatably connected to the other ends of the two connecting rods, respectively.

[0030] Servo motor three is fixedly connected to the top surface of the outer casing, and the motor shaft of servo motor three passes through the top surface of the outer casing and is connected to one of the rotating shafts for transmission.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] 1. Through the coordinated arrangement of the placement plate, slide, dual-axis motor, lead screw one, lead screw two, moving block, arc-shaped clamping block, and clamping module, starting the dual-axis motor can rotate lead screw one and lead screw two, thereby driving the two arc-shaped clamping blocks to move towards or away from each other. Then, by rotating the knob, the connecting block can drive the pressure plate to move up or down. This allows the tooling to adapt to wheel discs of different sizes and thicknesses without the need to change tooling or make complex adjustments, thus improving the versatility and flexibility of the tooling.

[0033] 2. By attaching a ring to the outer wall of the placement plate, and having an annular groove on the top surface of the ring, and inserting several plug-in blocks at equal angles inside the annular groove, the blades can be precisely positioned and fixed through the cooperation between the plug-in blocks, the top plate, the electric telescopic rod, and the clamping module. This prevents the blades from shifting or shaking during the welding process. Furthermore, by controlling the extension or retraction of the electric telescopic rod, or by reducing or increasing the number of plug-in blocks, blades of different quantities and sizes can be clamped and positioned. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of a universal welding fixture for wind turbine impellers according to this utility model;

[0035] Figure 2 This is a schematic diagram of the clamping mechanism in this utility model;

[0036] Figure 3 This is a schematic diagram of the clamping mechanism in this utility model;

[0037] Figure 4 This is a schematic diagram of the blade fixing unit structure in this utility model;

[0038] Figure 5 This is a schematic diagram of the internal structure of the clamping module in this utility model.

[0039] In the diagram: 100, base; 110, side frame; 111, rotating disk; 112, extension rod; 113, connector; 114, mounting plate; 115, servo motor one; 120, servo motor two; 130, column; 131, bracket; 200, clamping mechanism; 210, placement tray; 211, slide rail; 212, dual-axis motor; 213, lead screw one; 214, lead screw two; 215, moving block; 216, arc-shaped clamping block; 217, clamping module; 2171. 2172. Housing; 2173. Threaded rod; 2174. Knob; 2175. Connecting block; 2176. Pressure plate; 220. Blade fixing unit; 221. Ring; 2211. Annular groove; 2212. Threaded hole one; 222. Insertion block; 223. Top plate; 224. Electric telescopic rod; 225. Clamping module; 2251. Outer cover; 2252. Rotating shaft; 2253. Gear; 2254. Connecting rod; 2255. Flexible clamping block; 2256. Servo motor three. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] Please see Figure 1-5In this embodiment of the present invention, a universal welding fixture for wind turbine impellers includes a base 100 and a clamping mechanism 200. A side frame 110 is fixedly connected to the top surface of the base 100 near its end. A rotating disk 111 is rotatably connected to the inner side wall of the side frame 110. An extension rod 112 is fixedly connected to the other side wall of the rotating disk 111. A connector 113 is fixedly connected to the other end of the extension rod 112. A mounting plate 114 is fixedly connected to the outer side wall of the side frame 110. A servo motor 120 is fixedly connected to the top surface of the mounting plate 114. The motor shaft of the servo motor 120 passes through the side frame 110 and is connected to the rotating disk 111. The clamping mechanism 200 includes a placement plate 210. A groove 211 is formed on the top surface of the placement plate 210. The bottom surface of the groove 211 is rotatably connected to the side wall of the connector 113. A dual-axis motor 212 is fixedly connected inside the groove 211. The two motor shafts of the dual-axis motor 212 are respectively connected to lead screws 2. 13 and lead screw 214, both lead screw 213 and lead screw 214 are screwed to the outer walls of each other with moving blocks 215. The top surfaces of both moving blocks 215 are fixedly connected to arc-shaped clamping blocks 216. The outer walls of both arc-shaped clamping blocks 216 are fixedly connected to pressing modules 217. The outer wall of the placement disc 210 is sleeved and fixedly fitted with a blade fixing unit 220. The blade fixing unit 220 includes a ring 221. The top surface of the ring 221 has an annular groove 2211. A plurality of plug-in blocks 222 are inserted at equal angles within the connector 11. A top plate 223 is fixedly connected to the top surface of each plug-in block 222. An electric telescopic rod 224 is fixedly connected to the inner sidewall of each top plate 223. A clamping module 225 is fixedly connected to the output end of each electric telescopic rod 224. A servo motor 115 is fixedly connected inside the connector 113. The motor shaft of the servo motor 115 passes through the sidewall of the connector 113 and is connected to the placement plate 210 for transmission. A column 130 is fixedly connected to the top surface of the base 100. A bracket 131 is fixedly connected to the top of the column 130. The inner arc surface of the bracket 131 contacts the outer wall of the extension rod 112. A plurality of threaded holes 2212 are equally angled on the outer wall of the ring 221. Threaded holes matching the threaded holes 2212 are provided at the insertion positions of the plug-in blocks 222 and the annular groove 2211.

[0042] Specifically, the wheel is first placed on the top surface of the placement plate 210. The threads of lead screw 1 213 and lead screw 214 have opposite directions. The dual-axis motor 212 is started to rotate lead screw 1 213 and lead screw 214, causing the two moving blocks 215 to move closer to each other. This brings the inner arc surfaces of the two symmetrical arc-shaped clamping blocks 216 into contact with the outer wall of the wheel, clamping the wheel. Based on the required number of blades to be welded, an equal number of insertion blocks 222 are inserted into the annular groove 2211 at equal angles, ensuring that the threaded holes 222 on their surfaces correspond to the adjacent threaded holes 2212. The blocks are then fixed by screws. The blades are then placed sequentially at the positions corresponding to the insertion blocks 222. The clamping module 225 is controlled to clamp the blades. The holding module 225 clamps and fixes the blades, and then welding is performed. By starting the servo motor 115, the motor shaft of the servo motor 115 drives the placement disk 210, causing the wheel and blades on the surface of the placement disk 210 to rotate, which facilitates the sequential welding of the blades. By starting the servo motor 120, the motor shaft of the servo motor 120 drives the rotating disk 111, causing the rotating disk 111 to drive the extension rod 112 to rotate. As a result, the connector 113 drives the wheel and blades on the clamping mechanism 200 to rotate. By coordinating the starting of the servo motor 120 and the servo motor 115, free rotation in two mutually perpendicular directions can be achieved, which greatly improves the flexibility and efficiency of the welding operation.

[0043] Example 1

[0044] like Figure 4-5 As shown, in this embodiment, the clamping module 225 includes an outer shell 2251. The outer side wall of the outer shell 2251 is fixedly connected to the output end of the electric telescopic rod 224. The inner wall of the outer shell 2251 is symmetrically rotatably connected to two rotating shafts 2252. Gears 2253 are sleeved and fixed on the outer walls of the two rotating shafts 2252, and the two gears 2253 mesh with each other. Connecting rods 2254 are sleeved and fixed on the outer walls of the two rotating shafts 2252. Flexible clamping blocks 2255 are rotatably connected to the other ends of the two connecting rods 2254. A servo motor 2256 is fixedly connected to the top surface of the outer shell 2251. The motor shaft of the servo motor 2256 passes through the top surface of the outer shell 2251 and is connected to one of the rotating shafts 2252 for transmission.

[0045] In this embodiment, after arranging several plug-in blocks 222 at equal angles, the blade is placed on the wheel at the position corresponding to one of the clamping modules 225. The electric telescopic rod 224 is extended or retracted according to the size of the blade, so that the clamping module 225 is close to the edge of the blade. The servo motor 2256 is started, so that the motor shaft of the servo motor 2256 drives the corresponding rotating shaft 2252, thereby causing the gear 2253 located on the outer wall of the rotating shaft 2252 to rotate. Another gear 2253 meshes with the gear 2253, so that the two connecting rods 2254 are close to each other until the two symmetrical flexible clamping blocks 2255 contact the two side walls of the blade respectively, so that the blade position is fixed. The above operation is repeated to position the remaining blades in sequence, and then welding is performed.

[0046] Example 2

[0047] like Figure 3 As shown, in this embodiment, the clamping module 217 includes a housing 2171. The side wall of the housing 2171 is fixedly connected to the outer wall of the arc-shaped clamping block 216. A groove is provided inside the housing 2171. A threaded rod 2172 is rotatably connected to the inner wall of the groove. A knob 2173 is fixedly connected to the top end of the threaded rod 2172 through the top surface of the housing 2171. A connecting block 2174 is screwed onto the outer wall of the housing 2171. A pressure plate 2175 is fixedly connected to the other end of the connecting block 2174. Both the pressure plate 2175 and the outer surface of the arc-shaped clamping block 216 are covered with rubber.

[0048] In practice, the wheel is placed on the top surface of the placement plate 210 and the dual-axis motor 212 is started to clamp it with two arc-shaped clamping blocks 216. Then, the two knobs 2173 are manually rotated to move the two connecting blocks 2174 downward along the outer wall of the threaded rod 2172 until the bottom surfaces of the two pressure plates 2175 are in contact with and pressed against the surface of the wheel, thereby increasing the stability of the wheel during welding.

[0049] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0050] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A universal welding fixture for wind turbine impellers, characterized in that, include: Base (100); The bottom surface of the side frame (110) is fixedly connected to the top surface of the base (100) near the end side; The rotating disk (111) has its side wall rotatably connected to the inner side wall of the side frame (110); The extension rod (112) is fixedly connected to the other side wall of the rotating disk (111); The connector (113) is fixedly connected at one end to the other end of the extension rod (112); Mounting plate (114) is fixedly connected to the outer side wall of side frame (110); Servo motor 2 (120) is fixedly connected to the top surface of the mounting plate (114) on its bottom surface. The motor shaft of servo motor 2 (120) passes through the side frame (110) and is connected to the rotating disk (111) for transmission. The clamping mechanism (200) includes a placement tray (210). A groove (211) is provided on the top surface of the placement tray (210). The bottom surface of the groove (211) is rotatably connected to the side wall of the connector (113). A dual-axis motor (212) is fixedly connected inside the groove (211). The two motor shafts of the dual-axis motor (212) are respectively connected to lead screw one (213) and lead screw two (214). The outer walls of lead screw one (213) and lead screw two (214) are screwed together with moving blocks (215). The top surfaces of the two moving blocks (215) are fixedly connected with arc-shaped clamping blocks (216). The outer wall of the block (216) is fixedly connected to a pressing module (217), and the outer wall of the placement plate (210) is fitted with a blade fixing unit (220). The blade fixing unit (220) includes a ring (221). The top surface of the ring (221) is provided with an annular groove (2211). Several plug-in blocks (222) are inserted into the annular groove (2211) at equal angles. The top surface of the several plug-in blocks (222) is fixedly connected to a top plate (223). The inner side wall of the several top plates (223) is fixedly connected to an electric telescopic rod (224). The output end of the several electric telescopic rods (224) is fixedly connected to a clamping module (225).

2. The universal welding fixture for wind turbine impellers according to claim 1, characterized in that, A servo motor (115) is fixedly connected inside the connector (113). The motor shaft of the servo motor (115) passes through the side wall of the connector (113) and is connected to the placement plate (210) for transmission.

3. The universal welding fixture for wind turbine impellers according to claim 1, characterized in that, A column (130) is fixedly connected to the top surface of the base (100), and a bracket (131) is fixedly connected to the top of the column (130). The inner arc surface of the bracket (131) is in contact with the outer wall of the extension rod (112).

4. The universal welding fixture for wind turbine impellers according to claim 1, characterized in that, The outer wall of the ring (221) is provided with several threaded holes (2212) at equal angles, and several plug-in blocks (222) are provided with threaded holes (2212) matching the threaded holes (2212) at the positions where they are plugged into the annular groove (2211).

5. The universal welding fixture for wind turbine impellers according to claim 1, characterized in that, The clamping module (217) includes: The shell (2171) has its side wall fixedly connected to the outer wall of the arc-shaped clamp (216), and has a groove inside; The threaded rod (2172) is rotatably connected to the inner wall of the groove at its bottom end, and a knob (2173) is fixedly connected to the top surface of the housing (2171) at its top end; The connecting block (2174) has three threaded holes on its surface that are screwed into the outer wall of the threaded rod (2172); The pressure plate (2175) is fixedly connected to the other end of the side wall of the connecting block (2174).

6. The universal welding fixture for wind turbine impellers according to claim 5, characterized in that, The outer surfaces of the pressure plate (2175) and the arc-shaped clamp (216) are both covered with rubber.

7. The universal welding fixture for wind turbine impellers according to claim 1, characterized in that, The clamping module (225) includes: The outer casing (2251) has its outer side wall fixedly connected to the output end of the electric telescopic rod (224); There are two rotating shafts (2252), both ends of which are rotatably connected to the inner wall of the outer casing (2251); Two gears (2253) are respectively fitted and fixed to the outer walls of two rotating shafts (2252); There are two connecting rods (2254), one end of each connecting rod (2254) is respectively sleeved and fixed to the outer wall of the two rotating shafts (2252); Two flexible clamps (2255) are provided, and the interiors of the two flexible clamps (2255) are rotatably connected to the other ends of the two connecting rods (2254); Servo motor three (2256) is fixedly connected to the top surface of the outer casing (2251). The motor shaft of servo motor three (2256) passes through the top surface of the outer casing (2251) and is connected to one of the rotating shafts (2252) for transmission.

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