Cold-drawing tool

Abstract

The utility model discloses a cold-drawing tool. The cold-drawing tool comprises a bracket and a pushing mechanism, the support is used for being arranged in the axial direction of a rotor shaft of a wind generating set generator, the first end of the support is used for sleeving the rotor shaft and making contact with the first end face of the bearing, and the second end of the support is located on the outer side of the end of the rotor shaft. A first end face of the bearing is close to a rotor of the generator; the pushing mechanism is used for being installed at the end of the rotor shaft, the pushing end of the pushing mechanism abuts against the second end of the support in a matched mode, and the pushing mechanism can push the support to move in the first direction. The first direction is a direction away from the rotor in the axial direction of the rotor shaft. In this way, the pushing mechanism can drive the support to move outwards in the axial direction of the rotor shaft, then the bearing is pulled out of the rotor shaft, cold-drawing dismounting of the bearing can be achieved, the risk caused by cutting and dismounting of the bearing through an angle grinder can be avoided, a large amount of labor force can be reduced, and cost is low.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, and in particular to a cold drawing tool. Background Technology

[0002] As wind turbines develop towards higher power outputs, generator rotors are becoming increasingly larger. After a certain number of years of operation, the drive-end bearings begin to fail. Damage to the drive-end bearings is often accompanied by high bearing temperature, abnormal vibration, and cage breakage. If not replaced promptly, it can cause rotor rubbing, further damaging the generator core and stator / rotor windings.

[0003] Before replacing the generator drive bearing, the bearing needs to be removed. Since the bearing and the generator rotor shaft are interference-fitted, an angle grinder can be used to cut the inner and outer rings of the bearing to facilitate its removal. However, this process will generate shavings and sparks, posing a risk of fire, cut injuries, and equipment damage. Utility Model Content

[0004] In view of this, the present invention provides a cold drawing tool that can realize the cold drawing removal of bearings. In this way, when the bearing at the drive end of the wind turbine generator is damaged, the cold drawing removal method can avoid the risks of using an angle grinder to cut and disassemble the bearing. This also reduces a lot of labor and lowers costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A cold drawing fixture includes: a support and a pushing mechanism;

[0007] The bracket is used to be arranged axially along the rotor shaft of the wind turbine generator, and its first end is used to be sleeved on the outside of the rotor shaft and to contact the first end face of the bearing, and the second end is located on the outside of the end of the rotor shaft; wherein, the first end face of the bearing is close to the rotor of the generator.

[0008] The pushing mechanism is used to be installed at the end of the rotor shaft, and its pushing end abuts against the second end of the bracket, and can push the bracket to move along a first direction; wherein, the first direction is the direction away from the rotor in the axial direction of the rotor shaft.

[0009] Preferably, the bracket includes: a pull ring, a support plate, and a connecting assembly;

[0010] The pull ring is used to fit on the outside of the rotor shaft and to contact the first end face of the bearing;

[0011] The support disk is used to be disposed on the outer side of the rotor shaft end;

[0012] The connecting component is used to connect the pull ring and the support plate;

[0013] The pushing end of the pushing mechanism contacts and engages with the support plate, and can push the support plate to move along the first direction.

[0014] Preferably, the pull ring comprises: two half pull rings and two fixing components;

[0015] The two half-rings are fitted together on the outside of the rotor shaft and are used to contact the first end face of the bearing.

[0016] One of the two fixing components is used to fix the first mating ends of the two half pull rings; the other is used to fix the second mating ends of the two half pull rings;

[0017] One end of the connecting component is used to connect to the two half-pull rings, and the other end is used to connect to the support plate.

[0018] Preferably, the first portion of the two half-rings contacts the first end face of the bearing, and the second portion is distributed around the outer peripheral wall of the bearing;

[0019] One of the fixing components is used to fix the first mating ends of the two second portions of the half pull rings; the other fixing component is used to fix the second mating ends of the two second portions of the half pull rings;

[0020] The first end of the connecting component is used to connect to the second parts of the two half-pull rings respectively.

[0021] Preferably, the connecting assembly includes a connecting screw assembly.

[0022] Preferably, the connecting screw assembly includes: a plurality of screws, a plurality of first nuts, and a plurality of second nuts;

[0023] Half of the plurality of screws passes through the support plate and the second part of one of the pull rings, and the other half of the screws passes through the support plate and the second part of the other pull ring;

[0024] The first nuts are used to tighten one by one onto the first end of the first screw, and are used to abut against the outer end face of the support plate;

[0025] The plurality of second nuts are used to tighten one by one to the second end of the plurality of screws and to make contact with the outer end faces of the two half pull rings.

[0026] Preferably, one half of the screw and the other half of the screw are symmetrically distributed about the rotor shaft.

[0027] Preferably, the support plate has a plurality of first through holes for the first ends of the plurality of screws to pass through one by one;

[0028] One of the pull rings has a plurality of second through holes for the second end of one half of the screw to pass through, and the other half of the pull ring has a plurality of third through holes for the second end of the other half of the screw to pass through.

[0029] The first through hole, the second through hole, and the third through hole are all internal threaded holes and are used to engage with the external thread of the screw.

[0030] Preferably, among the plurality of screws, two screws pass through the first mating ends of the second portions of the two half-pull rings, and the other two screws pass through the second mating ends of the second portions of the two half-pull rings.

[0031] Both of the aforementioned fixing components include a fixing plate;

[0032] In the two fixing plates, one fixing plate is penetrated by the second ends of the two screws, and the other fixing plate is penetrated by the second ends of the other two screws, and both abut against the outer end face of the second part of the two half pull rings and the corresponding two second nuts.

[0033] Preferably, the pushing mechanism includes a hydraulic cylinder.

[0034] As can be seen from the above technical solution, the cold drawing fixture provided by this utility model has a bracket set along the axial direction of the rotor shaft. Its first end is fitted on the outside of the rotor shaft and contacts the inner end face of the bearing. The second end is located on the outside of the rotor shaft end. The second end of the bracket is pushed along the first direction by the pushing end of the pushing mechanism, which drives the bracket to move outward along the axial direction of the rotor shaft, thereby pulling the bearing out of the rotor shaft. This achieves the cold drawing and removal of the bearing. In this way, when the bearing at the drive end of the wind turbine generator is damaged, the cold drawing and removal method provided by this solution can avoid the risks of using an angle grinder to cut and disassemble the bearing. Moreover, this can reduce a lot of labor and reduce costs. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the installation of the cold-drawn tooling on the rotor shaft according to an embodiment of the present invention;

[0037] Figure 2 Another schematic diagram of the cold-drawn tooling on the rotor shaft provided in this embodiment of the utility model;

[0038] Figure 3 A side view of the cold-drawn tooling mounted on the rotor shaft according to an embodiment of the present invention;

[0039] Figure 4 This is a schematic diagram of the structure of the cold drawing tool provided in an embodiment of the present utility model;

[0040] Figure 5 Another structural schematic diagram of the cold drawing tooling provided in this embodiment of the utility model;

[0041] Figure 6 A schematic diagram of the structure of the support disk provided in an embodiment of this utility model;

[0042] Figure 7 This is a schematic diagram of the pull ring provided in an embodiment of the present utility model.

[0043] Among them, 1 is the rotor shaft, 2 is the bearing, 3 is the pull ring, 31 is the half pull ring, 311 is the second through hole, 312 is the third through hole, 4 is the support plate, 41 is the first through hole, 5 is the screw, 6 is the first nut, 7 is the second nut, 8 is the fixing plate, and 9 is the hydraulic cylinder. Detailed Implementation

[0044] 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.

[0045] The cold drawing fixture provided in this embodiment of the utility model, such as Figure 1 As shown, it includes: a support frame and a jacking mechanism;

[0046] The bracket is used to be arranged along the axial direction of the rotor shaft 1 of the wind turbine generator, and its first end is used to be sleeved on the outside of the rotor shaft 1 and to contact the first end face of the bearing 2, and the second end is located on the outside of the end of the rotor shaft 1; wherein, the first end face of the bearing 2 is close to the rotor of the generator.

[0047] The jacking mechanism is used to be installed at the end of the rotor shaft 1, and its jacking end abuts against the second end of the bracket, and can push the bracket to move along a first direction; wherein, the first direction is the direction away from the rotor in the axial direction of the rotor shaft 1.

[0048] It should be noted that, asFigure 1 As shown, the input end of rotor shaft 1 (i.e. the end of rotor shaft 1 mentioned above) can be connected to the drive part of the generator (of course, the drive part can be removed before removing bearing 2, so that the input end of rotor shaft 1 is suspended and the bearing 2 can be removed). The middle part is fitted with bearing 2, and the output end (not shown in the figure) is assembled with the rotor of the generator.

[0049] The first end of the bracket can be fitted onto the outside of the rotor shaft 1 and contact the first end face of the bearing 2; wherein, the first end of the bracket may not contact the outer peripheral wall of the rotor shaft 1, or may only partially contact the first end face of the bearing 2, and the second end of the bracket may be located outside the end face (first end face) of the rotor shaft 1.

[0050] The jacking mechanism can abut against the end of the rotor shaft 1 and the second end of the bracket along the axial direction (e.g., horizontal direction) of the rotor shaft 1. Its jacking end abuts against the second end of the bracket and can drive the second end of the bracket to move in the first direction, which can also drive the bracket to move outward along the axial direction of the rotor shaft 1 to pull the bearing 2 out of the rotor shaft 1. This can realize the cold drawing and removal of the bearing 2, which can avoid the risks of existing cutting and removal methods, and also reduce a lot of labor and costs. Of course, the first end of the bracket is equivalent to the pulling end of the bracket, and the second end is equivalent to the pushing end of the bracket. Moreover, the jacking mechanism installed between the end of the rotor shaft 1 and the second end of the bracket will not fall off. The first direction is the axial direction of the rotor shaft 1, and it is also the direction away from the generator rotor, that is, the direction outward along the axial direction of the rotor shaft 1.

[0051] In other words, this solution provides a cold-drawing fixture for wind turbine generator drive end bearings, and it can be used for cold-drawing megawatt-level (e.g., 5 MW-level) wind turbine generator drive end bearings. The fixture's support is axially mounted along the rotor shaft 1, with its first end fitted onto the outer side of the rotor shaft 1 and contacting the inner end face of the bearing 2. The second end is located on the outer side of the rotor shaft 1 end. The second end of the support is pushed along a first direction by the pushing end of the pushing mechanism, thus moving the support outward along the rotor shaft 1 axially, thereby pulling the bearing 2 off the rotor shaft 1. This achieves cold-drawing removal of the bearing 2. Therefore, when a wind turbine generator drive end bearing is damaged, the cold-drawing removal method provided by this solution avoids the risks associated with using an angle grinder to cut and disassemble the bearing. It also reduces labor costs, lowers costs, and improves the safety of wind turbine generator drive end bearing removal. Of course, this cold-drawing fixture can also be applied to the removal of bearings on shafts in other fields.

[0052] In this plan, such as Figure 1 As shown, the bracket includes: a pull ring 3, a support plate 4, and a connecting assembly;

[0053] The pull ring 3 is used to be fitted onto the outside of the rotor shaft 1 and to contact the first end face of the bearing 2;

[0054] like Figure 3 As shown, the support disk 4 is used to be disposed on the outer side of the end of the rotor shaft 1;

[0055] The connecting component is used to connect the pull ring 3 and the support plate 4;

[0056] like Figure 3 As shown, the pushing end of the pushing mechanism is in contact with the support plate 4 and can push the support plate 4 to move in the first direction.

[0057] It should be noted that the pull ring 3 can be fitted onto the outer side of the rotor shaft 1 and is used to contact the first end face of the bearing 2; of course, as mentioned above, the pull ring 3 may not contact the outer peripheral wall of the rotor shaft 1, but it needs to contact the first end face of the bearing 2; the support plate 4 is used to be disposed on the outer side of the end face (such as the first end face) of the rotor shaft 1, and as... Figure 4 As shown, the support plate 4 can be a disc-shaped structure, and the pull ring 3 can be a ring-shaped structure. The support plate 4 and the pull ring 3 can be concentrically distributed along the axial direction of the rotor shaft 1, and the pull ring 3 can also be concentrically distributed with the bearing 2. Of course, the pull ring 3 is equivalent to the first end of the above-mentioned bracket, and the support plate 4 is equivalent to the second end of the above-mentioned bracket. The connecting assembly is used to connect the pull ring 3 and the support plate 4 along the second direction so that the pull ring 3 and the support plate 4 form a whole. The second direction is parallel to the axial direction of the rotor shaft 1. The pushing mechanism can be installed at the end of the rotor shaft 1, and its pushing end abuts against the inner end face of the support plate 4, and can push the support plate 4 to move along the first direction, which can drive the bracket to move outward along the axial direction of the rotor shaft 1, thereby cold-pulling the bearing 2 off the rotor shaft 1.

[0058] In other words, the support of this cold drawing fixture includes: a pull-out part (i.e., pull ring 3), a push-out part (i.e., support plate 4), and a connecting part (i.e., connecting assembly) that connects the pull-out part and the push-out part. The support has the characteristics of simple structure and clear structural layers.

[0059] Specifically, such as Figure 4 As shown, the pull ring 3 includes: two half pull rings 31 and two fixing components;

[0060] like Figure 2 As shown, the two half-rings 31 are used to fit together on the outside of the rotor shaft 1 and to contact the first end face of the bearing 2.

[0061] One of the two fixing components is used to fix the first mating ends of the two half pull rings 31; the other fixing component is used to fix the second mating ends of the two half pull rings 31.

[0062] One end of the connecting component is used to connect to the two half pull rings 31, and the other end is used to connect to the support plate 4.

[0063] It should be noted that the pull ring 3 is a two-half pull ring structure, meaning that the two half pull rings 31 can be joined together to form the pull ring 3. This facilitates the pull ring 3 being fitted onto the outside of the rotor shaft 1 and contacting the first end face of the bearing 2. The first mating ends of the two half pull rings 31 can be fixed by a fixing component, and the second mating ends can be fixed by another fixing component, so that the two half pull rings 31 are fixed after being joined, thus forming a whole after being joined. This facilitates the connection of one end of the connecting component to this whole; wherein, as... Figure 7 As shown, the two half-pull rings 31 can be two half-ring plates.

[0064] In other words, the pull ring 3 has a two-part pull ring structure, which facilitates the assembly and disassembly of the pull ring 3 on the rotor shaft 1. Furthermore, after the two half-pulling rings 31 are fitted together, two fixing components can be used to secure the two mating parts of each half-pulling ring 31, thus achieving a fixed fit. Alternatively, the pull ring 3 can also adopt a rotatable two-part pull ring structure. When the two half-pulling ring structure is fitted onto the rotor shaft 1, a locking component is needed to lock the fit between the two half-pulling rings.

[0065] Furthermore, the first part of the two half-rings 31 contacts the first end face of the bearing 2, and the second part is distributed around the outer peripheral wall of the bearing 2;

[0066] One fixing component is used to fix the first mating ends of the second parts of the two half pull rings 31; another fixing component is used to fix the second mating ends of the second parts of the two half pull rings 31.

[0067] The first end of the connecting component is used to connect to the second part of each of the two half pull rings 31.

[0068] It should be noted that, as Figure 2 As shown, the first part of the pull ring 31 can be the inner half-ring portion of the pull ring 31, and the second part can be the outer half-ring portion of the pull ring 31. The second parts of the two pull rings 31 are distributed around the outer peripheral wall of the bearing 2. Of course, the outer diameter of the second part of the pull ring 31 is larger than the outer diameter of the bearing 2, and the outer diameter of the pull ring 3 can be equal to the diameter of the support plate 4. That is to say, the inner ring portion of the pull ring 3 contacts the first end face of the bearing 2, and the outer ring portion is distributed around the outer peripheral wall of the bearing 2. This makes it easy for the two fixing components to fix the first mating ends and the second mating ends of the two pull rings 31 one by one, and also makes it easy for the first end of the connecting component to be connected to the two pull rings 31 respectively.

[0069] Furthermore, the connecting assembly includes a connecting screw assembly. Wherein, such as Figure 1As shown, the connecting screw assembly includes multiple screw assemblies, each screw assembly including: a screw 5 and at least two nuts, as detailed below. This connection method is characterized by its simple structure, convenient connection, and reliability. Furthermore, other connecting components, such as connecting rod assemblies, can also be used in this solution, which will not be elaborated here.

[0070] In this plan, such as Figure 4 and Figure 5 As shown, the connecting screw assembly includes: multiple screws 5, multiple first nuts 6, and multiple second nuts 7;

[0071] like Figure 4 As shown, half of the screws 5 pass through the second part of the support plate 4 and the second part of the pull ring 31, and the other half of the screws 5 pass through the second part of the support plate 4 and the second part of the other pull ring 31.

[0072] like Figure 4 As shown, multiple first nuts 6 are used to tighten one by one onto the first end of multiple screws 5, and are used to abut against the outer end face of the support plate 4.

[0073] like Figure 5 As shown, multiple second nuts 7 are used to tighten onto the second ends of multiple screws 5, and are used to contact and engage with the outer end faces of the two half-pull rings 31.

[0074] It should be noted that the number of screws 5 can be an even number (e.g., eight). Half of the screws 5 (which can be four screws 5) pass through the support plate 4 and the second part of one half of the pull ring 31, respectively. The other half of the screws 5 (which can be another four screws 5) pass through the support plate 4 and the second part of another half of the pull ring 31, respectively. The first end of all the screws 5 passes through the support plate 4 and is located outside the outer end face of the support plate 4. The second end of half of the screws 5 passes through the second part of one half of the pull ring 31 and is located outside the outer end face of that half of the pull ring 31. The second end of the other half of the screws 5 passes through the second part of another half of the pull ring 31 and is located outside the outer end face of that half of the pull ring 31.

[0075] like Figure 4 As shown, multiple first nuts 6 are used to mate (tighten) with the first ends of multiple screws 5 one by one, and are also used to abut against the outer end face of the support plate 4, so that the support plate 4 is limited on the first ends of the multiple screws 5; as Figure 5As shown, multiple second nuts 7 are used to engage (tighten) with the second ends of multiple screws 5 one by one, and to contact the outer end faces of the two half-pull rings 31, so that the two half-pull rings 31 are limited on the second ends of multiple screws 5. This limits the support plate 4 and the two half-pull rings 31 between multiple first nuts 6 and multiple second nuts 7, keeping the distance between the support plate 4 and the pull rings 3 fixed, thus ensuring that the process of pushing the support plate 4 is the process of pulling the bearing 2. Of course, this design of the connecting screw assembly has the characteristics of simple structure and reliable connection. In addition, first nuts 6 can be screwed onto the first part of each of the multiple screws 5, and they can be used to abut against the inner end face of the support plate 4, so that the support plate 4 is fixed on the multiple screws 5; similarly, second nuts 7 can be screwed onto the second part of each of the multiple screws 5, and they can be used to abut against the inner end face of the two half pull rings 31, so that the two half pull rings 31 are fixed on the multiple screws 5; wherein, the first part of the screw 5 is the part of the middle part of the screw 5 near the first end, and the second part is the part of the middle part of the screw 5 near the second end.

[0076] Specifically, such as Figure 1 As shown, one half of the screw 5 and the other half of the screw 5 are symmetrically distributed about the rotor shaft 1. Wherein, as... Figure 4 As shown, one half of the screw 5 and the other half of the screw 5 are symmetrically distributed about the lines connecting the center of the pull ring 3 and the center of the support plate 4; for example, as Figure 4 As shown, the four screws 5 and the other four screws 5 are symmetrically distributed about the line connecting the center of the pull ring 3 and the center of the support plate 4; in this way, the support plate 4 and the pull ring 3 are subjected to uniform force, ensuring that the cold drawing fixture can pull out the bearing 2 smoothly and reliably.

[0077] Furthermore, such as Figure 6 As shown, the support plate 4 has multiple first through holes 41 for the first ends of multiple screws 5 to pass through one by one;

[0078] like Figure 7 As shown, one half pull ring 31 has a plurality of second through holes 311 for the second end of one half of the screw 5 to pass through, and the other half pull ring 31 has a plurality of third through holes 312 for the second end of the other half of the screw 5 to pass through.

[0079] Among them, the first through hole 41, the second through hole 311 and the third through hole 312 are all internal threaded holes and are used to mate with the external thread of the screw 5.

[0080] It should be noted that the multiple first through holes 41 on the support plate 4 are all internally threaded holes, allowing the first ends of the multiple screws 5 to pass through and be screwed in one by one; the multiple second through holes 311 on one half of the pull ring 31 are also internally threaded holes, allowing the second ends of one half of the screws 5 to pass through and be screwed in one by one; the multiple third through holes 312 on the other half of the pull ring 31 are also internally threaded holes, allowing the second ends of the other half of the screws 5 to pass through and be screwed in one by one; in this way, the support plate 4 and the pull ring 3 can be more securely fixed on the multiple screws 5, which also makes the connection between the connecting screw assembly and the support plate 4 and the pull ring 3 more secure. Of course, in this way, the support plate 4 and the pull ring 3 are less likely to slip on the multiple screws 5, thus achieving self-locking.

[0081] Furthermore, such as Figure 4 As shown, among the multiple screws 5, two screws 5 pass through the first mating ends of the second part of the two half-pull rings 31, and the other two screws 5 pass through the second mating ends of the second part of the two half-pull rings 31.

[0082] Both fixing components include a fixing plate 8;

[0083] In the two fixing plates 8, one fixing plate 8 is penetrated by the second ends of the two screws 5, and the other fixing plate 8 is penetrated by the second ends of the other two screws 5. Each fixing plate 8 abuts between the outer end face of the second part of the two half pull rings 31 and the corresponding two second nuts 7.

[0084] It should be noted that, as Figure 5 As shown, among the multiple screws 5, two screws 5 penetrate the first mating ends of the second part of the two half-pull rings 31, that is, the two screws 5 are located on both sides of the first mating seam of the second part of the two half-pull rings 31; and two other screws 5 penetrate the second mating ends of the second part of the two half-pull rings 31, that is, the two other screws 5 are located on both sides of the second mating seam of the second part of the two half-pull rings 31.

[0085] like Figure 5 As shown, in the two fixing plates 8, one fixing plate 8 is penetrated by the second ends of the two screws 5 and abuts against the outer end face of the first pair of joints of the second part of the two half-pull rings 31 and the corresponding two second nuts 7. The other fixing plate 8 is penetrated by the second ends of the other two screws 5 and abuts against the outer end face of the second pair of joints of the second part of the two half-pull rings 31 and the corresponding two second nuts 7. In this way, the first pair of joints and the second pair of joints of the second part of the two half-pull rings 31 can be fixed respectively, and the fixing plates 8 are fastened by using part of the screw assembly, which makes the structure of this cold drawing tool simpler and more compact. Of course, as Figure 4As shown, the aforementioned fixing plates 8 can also be provided on the inner end faces of the first and second joints of the second part of the two half pull rings 31, and the fastening method is the same as that of the outer fixing plate 8, which will not be described in detail here. This makes the engagement of the two half pull rings 31 more secure.

[0086] Specifically, such as Figure 1 As shown, the jacking mechanism includes a hydraulic cylinder 9. The hydraulic cylinder 9 provides a smooth and reliable jacking force to the support plate 4, thereby making the pulling of the pull ring 3 onto the bearing 2 more smooth and reliable. Of course, other jacking mechanisms, such as jacks, can also be used in this solution, but will not be elaborated here.

[0087] In other words, the cold drawing fixture provided by this solution can easily pull the bearing 2 out of the rotor shaft 1. Moreover, it has a simple structure, is easy to assemble and has high reliability, and can better realize the removal of the bearing 2 from the rotor shaft 1.

[0088] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0089] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cold-drawing tooling, characterized in that, include: Support frame and jacking mechanism; The bracket is used to be arranged along the axial direction of the rotor shaft (1) of the wind turbine generator, and its first end is used to be sleeved on the outside of the rotor shaft (1) and to contact the first end face of the bearing (2), and the second end is located on the outside of the end of the rotor shaft (1); wherein, the first end face of the bearing (2) is close to the rotor of the generator. The jacking mechanism is used to be installed at the end of the rotor shaft (1), and its jacking end abuts against the second end of the bracket, and can jack the bracket to move along a first direction; wherein, the first direction is the direction away from the rotor in the axial direction of the rotor shaft (1).

2. The cold drawing fixture according to claim 1, characterized in that, The bracket includes: a pull ring (3), a support plate (4), and a connecting assembly; The pull ring (3) is used to be fitted on the outside of the rotor shaft (1) and to contact the first end face of the bearing (2); The support disk (4) is used to be disposed on the outer side of the end of the rotor shaft (1); The connecting component is used to connect the pull ring (3) and the support plate (4). The pushing end of the pushing mechanism is in contact with the support plate (4) and can push the support plate (4) to move along the first direction.

3. The cold drawing fixture according to claim 2, characterized in that, The pull ring (3) includes: two half pull rings (31) and two fixing components; The two half-rings (31) are fitted together on the outside of the rotor shaft (1) and are used to contact the first end face of the bearing (2); One of the two fixing components is used to fix the first mating ends of the two half pull rings (31); the other is used to fix the second mating ends of the two half pull rings (31); One end of the connecting component is used to connect to the two half-pull rings (31), and the other end is used to connect to the support plate (4).

4. The cold drawing fixture according to claim 3, characterized in that, The first part of the two half-rings (31) contacts the first end face of the bearing (2), and the second part is distributed around the outer peripheral wall of the bearing (2); One of the fixing components is used to fix the first mating ends of the second portions of the two half pull rings (31); the other fixing component is used to fix the second mating ends of the second portions of the two half pull rings (31); The first end of the connecting component is used to connect to the second part of each of the two half pull rings (31).

5. The cold drawing fixture according to claim 4, characterized in that, The connecting assembly includes a connecting screw assembly.

6. The cold drawing fixture according to claim 5, characterized in that, The connecting screw assembly includes: multiple screws (5), multiple first nuts (6) and multiple second nuts (7); Half of the screws (5) pass through the support plate (4) and the second part of one of the pull rings (31), and the other half of the screws (5) pass through the support plate (4) and the second part of the other pull ring (31); Multiple first nuts (6) are used to tighten one by one to the first end of multiple screws (5), and are used to abut against the outer end face of the support plate (4); Multiple second nuts (7) are used to tighten one by one to the second end of multiple screws (5) and to make contact with the outer end faces of the two half pull rings (31).

7. The cold drawing fixture according to claim 6, characterized in that, One half of the screw (5) and the other half of the screw (5) are symmetrically distributed about the rotor shaft (1).

8. The cold drawing fixture according to claim 6, characterized in that, The support plate (4) has a plurality of first through holes (41) for the first ends of the plurality of screws (5) to pass through one by one. One of the pull rings (31) has a plurality of second through holes (311) for the second end of one half of the screw (5) to pass through, and the other half of the pull ring (31) has a plurality of third through holes (312) for the second end of the other half of the screw (5) to pass through. The first through hole (41), the second through hole (311) and the third through hole (312) are all internal threaded holes and are used to engage with the external thread of the screw (5).

9. The cold drawing fixture according to claim 6, characterized in that, Among the plurality of screws (5), two of the screws (5) pass through the first mating ends of the second part of the two half-pull rings (31), and two other screws (5) pass through the second mating ends of the second part of the two half-pull rings (31); Both of the aforementioned fixing components include a fixing plate (8); In the two fixing plates (8), one fixing plate (8) is penetrated by the second ends of the two screws (5), and the other fixing plate (8) is penetrated by the second ends of the other two screws (5), and both abut against the outer end face of the second part of the two half pull rings (31) and the corresponding two second nuts (7).

10. The cold drawing fixture according to claim 2, characterized in that, The jacking mechanism includes a hydraulic cylinder (9).

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