A kind of welding auxiliary device for wind turbine rotor rotating shaft and rib plate

Abstract

This utility model discloses an auxiliary device for welding the rotor shaft and ribs of a wind turbine generator, comprising: a welding workbench with a working groove; a pair of assembly discs, each assembly disc having a through hole in its center; an assembly fitting on the outer side of each assembly disc, coaxial with the through hole; and several assembly slots on the inner side of each assembly disc, arranged around the through hole and radially along the assembly disc. The pair of assembly discs are respectively used to mount and hold the rotor shaft at both ends of the wind turbine generator, and are coaxial with the rotor shaft. Both ends of each rib are secured in the assembly slots of the pair of assembly discs. A pair of support rollers are provided on the top of each welding support base at both ends of the welding workbench. The advantages of this utility model are that it effectively improves the welding quality and efficiency of the wind turbine generator rotor shaft and ribs.

Description

Technical Field

[0001] This utility model relates to the technical field of wind turbine rotor processing equipment, specifically to a welding auxiliary device for wind turbine rotors. Background Technology

[0002] In recent years, wind power generation technology has developed rapidly, wind turbines have become larger and larger, and the power of wind turbine generators that are matched with them has gradually increased. The welding requirements for wind turbine generator rotors have also become more and more stringent.

[0003] The wind turbine rotor includes: a wind turbine rotor shaft, and several ribs spaced apart on the wind turbine rotor shaft, with each rib plate arranged radially along the wind turbine rotor shaft.

[0004] During the manufacturing process of wind turbine rotors, each rib plate needs to be positioned on the rotor shaft before being welded to it. However, positioning the rib plates on the rotor shaft is cumbersome, resulting in low assembly efficiency and repeated position measurements during welding. Furthermore, after welding, the rib plates are prone to deformation due to temperature and gravity, requiring either heat straightening or mechanical pressing for correction. All of these factors contribute to uncontrollable machining precision, leading to low production efficiency and quality. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an auxiliary device for welding the rotor shaft and ribs of a wind turbine generator, which can greatly improve the welding efficiency and welding quality of the ribs on the rotor shaft of the wind turbine generator.

[0006] To solve the above problems, the technical solution adopted by this utility model is: an auxiliary device for welding the rotor shaft and rib plate of a wind turbine generator, comprising: a welding worktable with a working groove, welding support seats at both ends below the welding worktable, and a pair of assembly plates, each assembly plate having a through hole in the center, and an assembly fitting communicating with the through hole on the outer side of each assembly plate, each assembly fitting being coaxial with the corresponding through hole, and several assembly slots on the inner side of each assembly plate, all assembly slots on each assembly plate being arranged around the through hole and each assembly slot being arranged radially along the assembly plate; a pair of assembly plates... The mounting plates are respectively used to mount and clamp at both ends of the wind turbine rotor shaft, and the pair of mounting plates are coaxial with the wind turbine rotor shaft. The mounting plates are fixed to the wind turbine rotor shaft. The two ends of each rib are clamped in the mounting slots of the pair of mounting plates. All the ribs clamped in the mounting slots of the pair of mounting plates are evenly spaced around the wind turbine rotor shaft, and the plate body of each rib is arranged radially along the wind turbine rotor shaft. The working groove is opened along the length direction of the ribs on the wind turbine rotor shaft. Each welded support base is provided with a pair of support rollers on its top, and the two pairs of support rollers are used to support the two ends of the wind turbine rotor shaft respectively.

[0007] Furthermore, in the aforementioned auxiliary device for welding the rotor shaft and rib of a wind turbine generator, the inner end of each assembly slot is connected to the through hole of the assembly plate, and the slot opening at the inner end of each assembly slot increases to both sides.

[0008] Furthermore, in the aforementioned auxiliary device for welding the rotor shaft and rib plate of a wind turbine generator, each assembly is provided with four fastening bolts evenly arranged circumferentially, and each assembly is fixed to the rotor shaft of the wind turbine generator using fastening bolts.

[0009] Furthermore, in the aforementioned auxiliary device for welding the rotor shaft and rib of a wind turbine generator, a retaining step is formed between the through hole of each assembly plate and the assembly plate; the structure of the wind turbine generator rotor shaft includes: a body section, a connecting section at each end of the body section, a transition section and a support section outside each connecting section, with the diameters of the body section, connecting section, transition section and support section decreasing sequentially; a positioning step is formed between the connecting section at both ends and the body section; each assembly plate is fitted onto one end of the wind turbine generator rotor shaft, the retaining step on the assembly plate is engaged with the positioning step of the wind turbine generator rotor shaft, the assembly plate is fitted onto the connecting section, and the spacing between a pair of corresponding assembly slots of the two assembly plates is consistent with the length of the rib; the support sections at both ends of the wind turbine generator rotor shaft are supported on a pair of support rollers.

[0010] Furthermore, in the aforementioned auxiliary device for welding the rotor shaft and rib of a wind turbine generator, a pair of support rollers on each welding support seat are symmetrically supported at the bottom of the support section of the rotor shaft of the wind turbine generator.

[0011] The advantages of this utility model are: 1. The use of an assembly tray to clamp the ribs results in a simple structure and greatly facilitates the positioning of the ribs on the wind turbine rotor shaft. This not only facilitates welding between the ribs and the wind turbine rotor shaft, but the clamping of the assembly tray also effectively prevents welding deformation of the ribs, thereby greatly improving welding quality. 2. The use of support rollers facilitates the rotation of the wind turbine rotor shaft, allowing each rib to be rotated to the bottom of the working slot for easier welding operations, thus greatly improving welding quality and efficiency. 3. The welding worktable facilitates the installation of the welding machine, and the working slot also guides the movement of the welding torch, thereby improving welding quality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an auxiliary device for welding the rotor shaft and rib plate of a wind turbine generator, as described in this utility model.

[0013] Figure 2 This is a schematic diagram of the assembly plate in an auxiliary device for welding the rotor shaft and ribs of a wind turbine generator, as described in this utility model.

[0014] Figure 3 This is a schematic diagram of the arrangement of the assembly slots on the assembly plate.

[0015] Figure 4 This is a schematic diagram of the structure of a wind turbine rotor shaft with welded ribs. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments.

[0017] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, an auxiliary device for welding the rotor shaft and ribs of a wind turbine generator includes: a welding worktable 1 with a working groove 11, and welding support seats 2 at both ends below the welding worktable 1. It also includes a pair of assembly plates 3, each with a through hole 31 in the center, and an assembly fitting 32 communicating with the through hole 31 on the outer side of each assembly plate 3. Each assembly fitting 32 is coaxial with the corresponding through hole 31, and several assembly slots 33 are provided on the inner side of each assembly plate 3. All assembly slots 33 on each assembly plate 3 are arranged around the through hole 31 and are radially arranged along the assembly plate 3. The number of assembly slots 33 on each assembly plate 3 is the same as the number of ribs 5 on the wind turbine generator rotor shaft 4. During operation, a welding machine is movably mounted on the welding worktable 1, with the welding torch located within the working groove 11, allowing welding of the seam below the working groove 11.

[0018] A pair of assembly discs 3 are respectively used to mount and clamp at both ends of the wind turbine rotor shaft 4, and the pair of assembly discs 3 are coaxially arranged with the wind turbine rotor shaft 4. The assembly set 32 ​​is fixed to the wind turbine rotor shaft 4. Both ends of each rib 5 are clamped in the assembly slots 33 of the pair of assembly discs 3. All the ribs 5 clamped in the assembly slots 33 of the pair of assembly discs 3 are evenly spaced around the wind turbine rotor shaft 4, and the plate body of each rib 5 is arranged radially along the wind turbine rotor shaft 4. The working groove 11 is opened along the length direction of the ribs 5 on the wind turbine rotor shaft 4. Each welding support 2 is provided with a pair of support rollers 21 on its top, and the two pairs of support rollers 21 are respectively used to support both ends of the wind turbine rotor shaft 4. The assembly disc 3 has a large plate thickness and high rigidity, which can effectively prevent the ribs 5 from being deformed during welding.

[0019] In this embodiment, the inner end 331 of each assembly slot 33 is connected to the through hole 32 of the assembly plate, and the opening of the inner end 331 of each assembly slot 33 increases to both sides. The purpose of this is to facilitate the welding operation of the ends of the rib plate 5.

[0020] Each assembly 32 has four fastening bolts 6 evenly arranged around its circumference. Each fastening bolt 6 supports the wind turbine rotor shaft 4, thereby fixing the assembly 32 to the wind turbine rotor shaft 4. The advantages of using four fastening bolts 6 are: firstly, the structure is simple; secondly, the concentricity between the assembly 32 and the wind turbine rotor shaft 4 can be adjusted to ensure their coaxiality.

[0021] In this embodiment, a retaining step 311 is formed between each assembly plate through hole 31 and the assembly piece 32. The structure of the wind turbine rotor shaft 4 includes: a body section 41, with a connecting section 42 at each end of the body section 41, and a transition section 43 and a support section 44 outside each connecting section 42 in sequence. The diameters of the body section 41, connecting section 42, transition section 43 and support section 44 decrease in sequence. A positioning step 411 is formed between the connecting section 42 at both ends and the body section 41. Each assembly plate 3 is fitted onto one end of the wind turbine rotor shaft 4, and the retaining step 311 on the assembly plate 3 is engaged with the positioning step 411 of the wind turbine rotor shaft 4. The assembly piece 32 is fitted onto the connecting section 42, and the spacing between the pair of assembly slots 33 corresponding to the two assembly plates 3 is consistent with the length of the rib plate 5. The position of the rib plate 5 is completely fixed by simply spot welding the rib plate 5 after the two assembly plates 3 are clamped onto the wind turbine rotor shaft 4. The cooperation between the positioning step 411 and the locking step 311 greatly facilitates the fixing of the assembly 3 on the rotor shaft 4 of the wind turbine generator.

[0022] The support sections 44 at both ends of the wind turbine rotor shaft 4 are supported on a pair of support rollers 21. Each pair of support rollers 21 on each welding support seat 2 is symmetrically supported at the bottom of the support section 44 of the wind turbine rotor shaft 4. Using support rollers 21 for support not only simplifies the structure but also facilitates the rotation of the wind turbine rotor shaft 4, allowing each rib plate 5 to be rotated below the working groove 11 for easier welding operations.

[0023] The advantages of this utility model are as follows: First, the assembly plate 3 is used to clamp the rib plate 5, which has a simple structure and greatly facilitates the positioning of the rib plate 5 on the wind turbine rotor shaft 4. This not only facilitates the welding between the rib plate 5 and the wind turbine rotor shaft 4, but the clamping of the assembly plate 3 can also effectively prevent the rib plate from deforming during welding, thereby greatly improving the welding quality. Second, the support rollers 21 are used for support, which facilitates the rotation of the wind turbine rotor shaft 4, thereby allowing each rib plate 5 to be rotated to the bottom of the working groove 11 for welding operations, thus greatly improving the welding quality and welding efficiency.

Claims

1. An auxiliary device for welding a wind turbine generator rotor shaft to a rib plate, comprising: A welding workbench, characterized in that: a working groove is provided on the welding workbench, welding support seats are respectively provided at both ends below the welding workbench, and a pair of assembly plates are also included. Each assembly plate has a through hole in its center, and an assembly fitting communicating with the through hole is provided on the outer side of each assembly plate. Each assembly fitting is coaxial with the corresponding through hole. Several assembly slots are provided on the inner side of each assembly plate, and all assembly slots on each assembly plate are arranged around the through hole and along the radial direction of the assembly plate. The pair of assembly plates are used to mount and clamp onto the rotor shaft of a wind turbine generator. The assembly plates are coaxial with the wind turbine rotor shaft at both ends. The assembly plates are fixed to the wind turbine rotor shaft. Each rib plate is secured at both ends in the assembly slots of the pair of assembly plates. All rib plates in the assembly slots of the pair of assembly plates are evenly spaced around the wind turbine rotor shaft, and the plate body of each rib plate is arranged radially along the wind turbine rotor shaft. The working groove is opened along the length direction of the rib plate on the wind turbine rotor shaft. Each welded support base is provided with a pair of support rollers at its top. The two pairs of support rollers are used to support the two ends of the wind turbine rotor shaft, respectively.

2. The auxiliary device for welding the rotor shaft and rib plate of a wind turbine generator according to claim 1, characterized in that: The inner end of each assembly slot is connected to the through hole of the assembly plate, and the opening of the inner end of each assembly slot increases to both sides.

3. The auxiliary device for welding the rotor shaft and rib plate of a wind turbine generator according to claim 1, characterized in that: Each assembly has four fastening bolts evenly arranged around its circumference, and each assembly is fixed to the rotor shaft of the wind turbine generator using fastening bolts.

4. The auxiliary device for welding the rotor shaft and the rib plate of a wind power generator rotor according to claim 1, characterized in that: Each assembly plate has a locking step between its through hole and the assembly piece; the structure of the wind turbine rotor shaft includes: a body section, with a connecting section at each end of the body section, and a transition section and a support section outside each connecting section, with the diameters of the body section, connecting section, transition section and support section decreasing sequentially; positioning steps are formed between the connecting sections at both ends and the body section; each assembly plate is fitted onto one end of the wind turbine rotor shaft, and the locking step on the assembly plate locks onto the positioning step of the wind turbine rotor shaft, the assembly piece is fitted onto the connecting section, and the spacing between a pair of corresponding assembly slots of two assembly plates is consistent with the length of the rib; the support sections at both ends of the wind turbine rotor shaft are supported on a pair of support rollers.

5. The auxiliary device for welding the rotor shaft and the rib plate of a wind power generator rotor according to claim 4, characterized in that: Each welded support base has a pair of support rollers symmetrically supporting the bottom of the support section of the wind turbine rotor shaft.

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